CN117283822A

CN117283822A - Composite lateral parting and core pulling mechanism and injection mold

Info

Publication number: CN117283822A
Application number: CN202311105155.7A
Authority: CN
Inventors: 夏文琪; 范希营; 丁文杰
Original assignee: Jiangsu Normal University
Current assignee: Jiangsu Normal University
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2023-12-26

Abstract

The invention discloses a composite lateral parting and core pulling mechanism and an injection mold, wherein the composite lateral parting and core pulling mechanism comprises a large-side-pulling-distance inner side pulling part, a small-side-pulling-distance inner side pulling part and a linkage control part; the large side extraction distance inner side extraction part comprises a large inner side core extraction; the small side extraction distance inner side extraction part comprises a small inner side core extraction, and the inner side extraction direction of the small inner side core extraction and the inner side extraction direction of the large inner side core extraction are in a space perpendicular crossing relation; the linkage control part comprises a small inner core-pulling control component and a large inner core-pulling control component. According to the invention, aiming at a complex-structure plastic part which needs to be vertically crossed with two side drawers and needs a side drawer with a large side drawer distance and a small side drawer distance, and meanwhile, the side drawers in two directions have a too close distance to cause motion interference in the side drawer direction, the inner side parting and core pulling which avoid interference can be realized on the premise of realizing compact integral structure of the injection mold and not arranging additional outer side drawer force.

Description

Composite lateral parting and core pulling mechanism and injection mold

Technical Field

The invention relates to an injection side core pulling device and an injection mold, in particular to a composite side parting and core pulling mechanism with sequential actions and an injection mold, and belongs to the technical field of injection processing.

Background

Injection molding, also called injection molding, is a molding method of injection and molding, which is a method of injecting molten plastic into a mold cavity of an injection mold by high pressure after an injection machine completely melts the plastic material at a certain temperature and obtaining a molded product after cooling and solidifying, and has the advantages of low cost and high efficiency, is widely applied to the processing of plastic parts, is an important manufacturing process in the global plastic industry, and is particularly suitable for the molding processing fields of mass production, products with complex shapes and the like.

The injection mold is a key injection molding tool for endowing plastic products with complete configuration and accurate size, the structure of the key injection molding tool is determined by the complexity of the plastic products, the structural form of an injection machine and other factors, the injection mold can be divided into a movable mold component and a fixed mold component, the fixed mold component is arranged on a fixed mold plate of the injection machine, the movable mold component is arranged on a movable mold plate of the injection machine, the movable mold component and the fixed mold component are closed to form a mold clamping state of an injection runner and a mold cavity during injection, and the movable mold component is separated from the fixed mold component during mold opening, so that the injection molded plastic products can be taken out.

The injection mold generally includes a molding portion (including a part constituting a mold cavity of the mold such as a core, a cavity, an insert, and an insert), an injection runner (a passage through which molten plastic enters the mold), a guide mechanism (including a mechanism for ensuring accurate positioning of a movable mold assembly and a stationary mold assembly in a mold-closed state such as a guide post, a guide sleeve, etc.), an ejecting mechanism (including a mechanism for ejecting a molded plastic piece out of the mold cavity when the mold is opened such as a push rod, a reset lever, etc.), a temperature adjusting mechanism (a mechanism for cooling or heating the mold), and the like. For the plastic part with concave-convex shapes, holes or bosses at the lateral positions, the injection mold also needs to comprise a lateral parting and core pulling mechanism which can drive the lateral mold core or the lateral molding block to move so as to laterally mold the plastic part, and before the plastic part is pushed out, the lateral mold core or the lateral molding block must be pulled out, and then the injection mold can be ejected and released. Aiming at the lateral parting and core pulling mechanism with shorter lateral moving distance of the lateral core or the lateral molding block, an inclined guide column type or inclined sliding block type lateral parting and core pulling mechanism is generally adopted, and the lateral parting and core pulling is realized by the lateral guide sliding of the lateral core sliding block through an inclined guide column matched with a guide inclined hole of the lateral core sliding block or through an inclined sliding block matched with a guide inclined plane of the lateral core sliding block; for the lateral parting and core pulling mechanism with larger lateral movement distance of the lateral core or the lateral molding block, if the oblique guide column type or the oblique sliding block type structure is adopted, the inclination angle of the oblique guide column or the inclined plane inclination angle of the oblique sliding block is overlarge, and further, the phenomenon of unsmooth movement of lateral movement blocking caused by smaller lateral component force is caused, so that the subsequent demolding is influenced, therefore, the lateral parting and core pulling mechanism with larger lateral movement distance of the lateral core or the lateral molding block is generally realized by adopting the lateral translation mechanism which extends to the outside of the mold and has additional lateral core pulling power such as a lateral drawing telescopic cylinder and the like, but the lateral parting and core pulling mechanism not only causes larger integral volume of the injection mold, but also causes the integral mechanism of the injection mold with additional power to be complicated compared with the ordinary injection mold mechanism without additional power in arrangement, and the time cooperation of the lateral core pulling action and the parting action is considered, so that the subsequent demolding is influenced by avoiding the motion interference.

For a complex-structure plastic part which needs to be vertically crossed to side-draw in two directions, needs a large side-draw distance and a small side-draw distance, and has interference in the side-draw direction due to too close side-draw distance, the traditional side parting and core-pulling mechanism can avoid interference by setting the side core-pulling direction opposite to the interference direction, but cannot realize the side parting and core-pulling under the condition that the installation space of an injection mold is limited and the side core-pulling direction is the same as the interference direction. Taking the temperature measuring gun housing plastic part 4 as shown in fig. 1 and 2 as an example, a temperature measuring probe mounting sleeve 42 which is arranged in a stretching manner and used for mounting a temperature measuring probe is arranged on a temperature measuring gun housing body 41 of the temperature measuring gun housing plastic part 4, the temperature measuring probe mounting sleeve 42 has a larger side extraction distance, a temperature measuring gun housing cover plate mounting buckle 43 used for mounting a temperature measuring gun housing cover plate is also arranged on the inner wall of the temperature measuring gun housing body 41 close to the temperature measuring probe mounting sleeve 42, two temperature measuring gun housing cover plate mounting buckles 43 which are arranged symmetrically relative to the axial middle surface of the temperature measuring probe mounting sleeve 42 and the two temperature measuring gun housing cover plate mounting buckles 43 have a smaller side extraction distance, the temperature measuring probe mounting sleeve 42 and the two temperature measuring gun housing cover plate mounting buckles 43 which are arranged symmetrically are in a space vertical crossing relationship, for the two temperature measuring gun housing cover plate mounting buckles 43, only an inner side pulling mode of pulling the inner side of the temperature measuring gun housing body 41 can be adopted, and the inner side pulling distance is smaller, the traditional inner side pulling mechanism can be adopted to achieve the inner side pulling of the temperature measuring gun housing body 41 so as to facilitate the subsequent demoulding, while for the temperature measuring probe mounting sleeve 42, if the lateral translation mechanism extending to the outside of the die and provided with additional lateral core pulling power such as a lateral pulling telescopic cylinder is adopted to achieve the lateral pulling of the outer side of the temperature measuring gun housing along the axial direction of the temperature measuring probe mounting sleeve 42, the interference with the inner side pulling mechanism of the temperature measuring gun housing cover plate mounting buckles 43 can be avoided, but the defects exist, and if the lateral translation mechanism extending to the outer side of the die and provided with additional lateral core pulling power such as the lateral pulling telescopic cylinder is adopted to achieve the lateral pulling of the inner side pulling of the temperature measuring probe housing along the axial direction of the temperature measuring probe mounting sleeve 42, it would interfere with the movement of the inner drawer mechanism of the mounting clasp 43 for the thermometer housing cover. Aiming at the plastic part with the complex structure, how to realize the inner lateral parting and core pulling which avoid interference on the premise of realizing the compact integral structure of the injection mold and not setting additional outer pumping force is a problem of concern in the industry.

Disclosure of Invention

Aiming at the problems, the invention provides a composite lateral parting and core pulling mechanism and an injection mold, and aims at a complex structural plastic part which needs to be vertically crossed with two lateral drawers and has a large lateral drawer distance and a small lateral drawer distance, and meanwhile, the lateral drawers in the two directions are too close to each other to have interference in movement in the lateral drawer direction, so that the internal lateral parting and core pulling which avoid interference can be realized on the premise of realizing compact integral structure of the injection mold and not setting additional external lateral pulling force.

In order to achieve the purpose, the composite lateral parting and core pulling mechanism comprises a large lateral extraction distance inner extraction part, a small lateral extraction distance inner extraction part and a linkage control part;

the large side extraction distance inner side extraction part comprises a large inner side core extraction, the large inner side core extraction is installed on the core in a guiding sliding fit manner through a large inner side extraction guide hole arranged in the core, and a downward opening structure is arranged on the large inner side core extraction;

the small side extraction distance inner side extraction part comprises a small inner side core extraction, the inner side extraction direction of the small inner side core extraction and the inner side extraction direction of the large inner side core extraction are in a space vertical crossing relationship, the small inner side core extraction comprises small inner side extraction rods which are symmetrically arranged in two parts relative to the axial bisector of the large inner side core extraction, and the top end of the small inner side extraction rod which is vertically arranged is provided with an inner side core extraction structure which extends towards the direction far away from the axial bisector of the large inner side core extraction;

The linkage control part comprises a small inner core-pulling control component and a large inner core-pulling control component;

the small inner core-pulling control assembly comprises a small inner core-pulling guide rod and a transmission assembly, the small inner core-pulling guide rod which is vertically arranged is arranged in the movable die assembly in a guiding sliding fit manner along the vertical direction, the top end of the small inner core-pulling guide rod is connected with the small inner core-pulling rod through a translation guide control structure I which is symmetrically arranged relative to the middle part of the large inner core-pulling axial direction, a guide chute I which is arranged along the axial direction of the small inner core-pulling guide rod is also arranged on a rod body of the small inner core-pulling guide rod, and the transmission assembly is arranged on the movable die assembly;

the large inner core-pulling control assembly comprises a linkage power rod and a linkage assembly, one end of the linkage power rod is connected with the small inner core-pulling guide rod through a sliding pin III which is arranged in the guide chute I and is in sliding fit with the guide chute I, the linkage assembly is arranged in the movable module assembly, the linkage assembly comprises a linkage swing rod, the swing direction of the linkage swing rod corresponds to the moving direction of the large inner core-pulling, the other end of the linkage power rod is in transmission connection with the linkage swing rod, the top end of the linkage swing rod is provided with a guide chute II which is arranged along the axial direction of the linkage swing rod, and the top end of the linkage swing rod is connected with the large inner core-pulling hinge through a sliding pin VI which is arranged in the guide chute II in sliding fit;

When in a die closing state, the two small inner side extraction rods are in an opening state far away from the middle split surface of the large inner side core pulling shaft, the two small inner side extraction rods are positioned in the opening structure, and the linkage power rod is positioned at the lower limit position of the guide chute I through the sliding pin III;

when the mould is opened, the transmission assembly of the small inner core-pulling control assembly controls the small inner core-pulling guide rods to vertically move downwards, so that the guide sliding grooves I move downwards relative to the sliding pins III, the small inner core-pulling guide rods control the two small inner core-pulling rods to be in a closed state close to the middle surface of the axial direction of the large inner core-pulling shaft through the translation guide control structure I, then the small inner core-pulling guide rods move downwards to be separated from the opening structure, the sliding pins III are relatively positioned at the upper limit positions of the guide sliding grooves I after the inner core-pulling action of the small inner core-pulling is completed, the small inner core-pulling guide rods drive the linkage power rods to move downwards through the guide sliding grooves I and the sliding pins III, and the linkage power rods drive the linkage swing rods to swing, so that the linkage swing rods drive the large inner core-pulling rods to move towards the inner side direction of the core through the guide sliding grooves II and the sliding pins VI, and the inner core-pulling action of the large inner core is realized.

As a further improvement scheme of the invention, the transmission assembly of the small inner core-pulling control assembly comprises a transmission connecting plate, a transmission driven rod, a transmission swing rod, a transmission driving rod and a transmission supporting frame; the bottom end of the small inner side extraction guide rod is fixedly connected with the transmission connecting plate; the transmission support frame is fixedly arranged on the movable die assembly, the transmission swing rod is arranged inside the transmission support frame, the middle part of the transmission swing rod is hinged to the transmission support frame, the transmission driven rod and the transmission driving rod which are vertically arranged in parallel are respectively arranged at two ends of the transmission swing rod, the transmission driven rod and the transmission driving rod are arranged on the transmission support frame through guide structures which are arranged along the direction of the vertical direction, the top end of the transmission driven rod is fixedly connected with the transmission swing rod through a sliding pin I and an arc chute I which is arranged at one end of the transmission swing rod and is in sliding fit with the sliding pin I, the bottom end of the transmission driven rod is fixedly connected with the transmission connecting plate, the bottom end of the transmission driving rod is fixedly connected with the transmission swing rod through a sliding pin II and an arc chute II which is arranged at the other end of the transmission swing rod and is in sliding fit with the sliding pin II, and the top end of the transmission driving rod is fixedly connected with the fixed die assembly.

As a further improvement scheme of the invention, the transmission assembly of the small inner core-pulling control assembly also comprises an auxiliary spring arranged in the transmission support frame, one end of the auxiliary spring is connected with the transmission support frame, the other end of the auxiliary spring is connected with the transmission swing rod, the auxiliary spring is a tension spring structure arranged on one side of the transmission driven rod and connected with one end of the transmission swing rod, or the auxiliary spring is a compression spring structure arranged on one side of the transmission driving rod and connected with the other end of the transmission swing rod.

As a further improvement scheme of the invention, a transmission swing rod swing angle limiting structure is arranged at a position corresponding to the transmission swing rod on the transmission support frame, or a transmission connecting plate limiting structure is arranged at a position corresponding to the transmission connecting plate on the movable die assembly.

As a further improvement scheme of the invention, the linkage assembly of the large inner core-pulling control assembly also comprises a linkage driven rod and a linkage support frame; the linkage support frame is fixedly arranged in the movable die assembly, the other end of the linkage power rod extends into the linkage support frame and is connected with the linkage support frame through a sliding pin IV and an arc-shaped chute III which is arranged on the linkage support frame and is in sliding fit with the sliding pin IV in a mounting manner, one end of a linkage driven rod positioned in the linkage support frame is hinged with the linkage power rod through the sliding pin IV, the other end of the linkage driven rod is connected with the linkage support frame through a sliding pin V and an arc-shaped chute IV which is arranged on the linkage support frame and is in sliding fit with the sliding pin V in a mounting manner, a rod body of the linkage swing rod is hinged on the linkage support frame, and the bottom end of the linkage swing rod is hinged with the linkage driven rod through the sliding pin V.

As a further improvement scheme of the invention, a spring jacking pin which can be positioned in a telescopic way is arranged on the linkage support frame at the position corresponding to the inner side end and/or the outer side end of the arc chute IV, the telescopic direction of the spring jacking pin is opposite to the sliding pin V, and the telescopic end of the spring jacking pin stretches into the arc chute IV.

As a further improvement scheme of the invention, the top end of the guide chute I is provided with a hook-shaped groove structure which corresponds to the swing direction of the linkage swing rod and extends outwards, the width dimension of the hook-shaped groove structure which is in through connection with the guide chute I is the same as the width dimension of the guide chute I, the hook-shaped groove structure is obliquely arranged downwards, and the extending length dimension of the hook-shaped groove structure is not smaller than the outer diameter dimension of the sliding pin III; the extending position of the movable mould assembly corresponding to the hook-shaped groove structure is provided with a sliding pin III guide groove, the sliding pin III guide groove comprises an inclined guide transition section positioned at the upper end and a vertical guide section vertically arranged below the inclined guide transition section, the inclined guide transition section is obliquely arranged inwards and upwards corresponding to the hook-shaped groove structure, the butt joint corner position of the inclined guide transition section and the vertical guide section is also provided with a spring jacking block which is in telescopic positioning, and the spring jacking block is in a normally closed state for blocking the sliding pin III guide groove.

As a further improvement scheme of the invention, the small inner core-pulling device further comprises a small inner core-pulling block which is symmetrically arranged into two parts relative to the axial middle split surface of the large inner core-pulling device, the small inner core-pulling block is arranged at the position of the small inner core-pulling device corresponding to the small inner core-pulling device through a translation guiding control structure II which is symmetrically arranged left and right, the small inner core-pulling device is also provided with a small inner core-pulling containing space which is matched with the external dimension of the small inner core-pulling block and can allow the small inner core-pulling block to retract into the interior of the core, the translation guiding control structure II comprises a sliding pin VII which is connected with the small inner core-pulling block in a mounting way and a sliding chute III which is matched with the sliding pin VII, the sliding chute III of the L-shaped structure comprises a horizontal section which is arranged corresponding to the small inner core-pulling containing space position and a vertical section which is communicated with the outer end of the horizontal section and extends upwards, the bottom end of the small inner core-pulling block is provided with an inclined surface structure or a bulge structure which is arranged along the inclined surface structure, the top end of the small inner core-pulling block is provided with the inclined surface structure or the inclined surface structure which is far away from the inclined surface of the small inner core-pulling block.

An injection mold aims at a complex-structure plastic part which needs to be vertically crossed to be laterally drawn in two directions, the lateral drawing in the two directions needs to be provided with a large lateral drawing distance and a small lateral drawing distance, and meanwhile, the lateral drawing in the two directions has motion interference in the lateral drawing direction.

As a further improvement scheme of the invention, the transmission connecting plate is arranged in parallel with the push plate, and a through groove which can allow the transmission connecting plate to pass through is arranged on the push plate at the position corresponding to the transmission connecting plate.

Compared with the prior art, the composite lateral parting and core pulling mechanism aims at a complex structural plastic part which needs to vertically cross two-direction lateral pulling, needs a large lateral pulling distance and a small lateral pulling distance, and simultaneously has the motion interference in the lateral pulling direction due to too close spacing of the two-direction lateral pulling, and is provided with a large lateral pulling distance inner pulling part, a small lateral pulling distance inner pulling part and a linkage control part for sequentially controlling the small lateral pulling distance inner pulling part and the large lateral pulling distance inner pulling part step by step during mold opening, wherein the linkage control part comprises a small inner core pulling control component and a large inner core pulling control component, the inner pulling action of the small inner core pulling can be controlled firstly through the composite action of the linkage control part during mold opening, the inner pulling action of the large inner core pulling can be controlled and finished, and the inner parting and core pulling of interference can be realized on the premise of realizing compact integral structure of the injection mold without setting additional outer pulling force.

Drawings

FIG. 1 is a schematic three-dimensional structure of a plastic part of a temperature measuring gun housing;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a top view structural layout of a movable mold assembly of a temperature measuring gun housing plastic injection mold;

FIG. 4 is a cross-sectional view of the entire injection mold of the temperature gun housing taken in the cross-sectional view A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of the composite side parting and core pulling mechanism shown in FIG. 4;

FIG. 6 is an enlarged partial view of the large inner core pulling control assembly shown in FIG. 5;

FIG. 7 is a B-B cross-sectional view of FIG. 5;

FIG. 8 is a schematic view of the small inside draw core in the clamped state of FIG. 7;

FIG. 9 is a schematic view of the small inside core-pulling structure of FIG. 7 during the mold opening process;

FIG. 10 is a schematic view of the small inside core back of FIG. 7 after full mold opening;

FIG. 11 is a schematic view of the large inside core-pulling control assembly in a clamped state;

FIG. 12 is a partial enlarged view in the P direction of FIG. 11;

FIG. 13 is a schematic view of the large inside core-pulling control assembly after full mold opening;

FIG. 14 is an enlarged view of a portion of the Q-direction of FIG. 13;

FIG. 15 is a schematic structural view of the temperature measuring gun housing during the mold opening process of the injection mold;

FIG. 16 is an enlarged view of a portion of the composite side parting and core pulling mechanism shown in FIG. 15;

FIG. 17 is a schematic diagram of the structure of the temperature measuring gun housing after the injection mold is completely opened;

FIG. 18 is an enlarged view of a portion of the composite side parting and core pulling mechanism shown in FIG. 17;

FIG. 19 is a schematic view showing a structure in which a slide pin III is located at the tip of a slide pin III guide groove in a mold clamping state;

fig. 20 is a schematic structural view of the slide pin iii entering the slide pin iii guide groove during the mold opening process.

In the figure: 1. the fixed mold component, 11, the fixed mold seat plate, 12, the fixed mold plate, 13, the cavity, 14, the sprue bush, 2, the movable mold component, 21, the movable mold seat plate, 211, the ejector pin through hole of the injection molding machine, 22, a cushion block, 23, the movable mold support plate, 231, the guide groove of the sliding pin III, 232, the spring ejector block, 24, the movable mold plate, 25, the core, 251, the sliding pin VII, 252, the guide groove III, 26, the ejector mechanism, 261, the push plate, 262, the draw bar, 3, the compound lateral parting and core pulling mechanism, 31, the large inner core pulling, 311, the opening structure, 32, the small inner core pulling, 321, the small inner core pulling bar, 322, the small inner core pulling block, 33, the small inner core pulling control component, 331, the small inner core pulling guide bar, 3311, the translational guide control structure I, 3312, the guide groove I, 3313 and the hook-shaped groove structure, 332, a transmission connecting plate, 333, a transmission driven rod, 3331, sliding pins I, 334, a transmission swing rod, 3341, arc-shaped sliding grooves I, 3342, arc-shaped sliding grooves II, 335, a transmission driving rod, 3351, sliding pins II, 336, auxiliary springs 337, a transmission supporting frame, 34, a large inner core pulling control component, 341, a linkage power rod, 3411, sliding pins III, 3412, sliding pins IV, 342, a linkage driven rod, 343, a linkage swing rod, 3431, sliding pins V, 3432, guide sliding grooves II, 3433, sliding pins VI, 344, a linkage supporting frame, 3441, arc-shaped sliding grooves III, 3442, arc-shaped sliding grooves IV, 3443, spring jacking pins, 4, a temperature measuring gun housing plastic part, 41, a temperature measuring gun housing body, 42, a temperature measuring probe mounting sleeve, 43 and a temperature measuring gun housing cover plate mounting buckle.

Detailed Description

The present invention will be further described with reference to the drawings by taking the temperature measuring gun housing molding 4 shown in fig. 1 and 2 as an example (hereinafter, the description will be made with the direction pointing to the inside of the injection mold as the inside direction and the direction pointing to the outside of the injection mold as the outside direction).

As shown in fig. 3, in order to facilitate demolding, according to the shape and position characteristics of the molded part 4 of the temperature measuring gun housing, the attaching installation surface of the body 41 of the temperature measuring gun housing and the cover plate of the temperature measuring gun housing are used as parting surfaces, and a one-mold two-cavity structure is adopted, as shown in fig. 4, the injection mold of the molded part of the temperature measuring gun housing comprises a fixed mold assembly 1, a movable mold assembly 2 and a composite lateral parting and core pulling mechanism 3.

The fixed die assembly 1 comprises a fixed die seat plate 11, a fixed die plate 12 and a die cavity 13 which are fixedly arranged into an integral structure; the fixed die plate 12 is provided with a guide sleeve which vertically penetrates through the fixed die plate 12 up and down and is fixedly connected with the fixed die plate 12, the fixed die plate 12 is also provided with a cooling water pipe joint, and the cooling water pipe joint is communicated with a cooling water channel which penetrates through the fixed die plate 12 and the cavity 13; the lower surface of the cavity 13 is flush with the lower surface of the fixed die plate 12, two upper concave cavity structures with the same external dimensions as those of the outer surface part of the temperature measuring gun shell plastic part 4 are also arranged on the lower surface of the cavity 13, and the two upper concave cavity structures are symmetrically arranged relative to the center of the fixed die plate 12; the geometric center position of the fixed die seat plate 11 of the flat plate structure is also provided with a sprue bush 14 which vertically penetrates through the fixed die seat plate 11 and the cavity 13.

The movable die assembly 2 comprises a movable die base plate 21, a cushion block 22, a movable die supporting plate 23, a movable die plate 24, a core 25 and a top die mechanism 26; the geometric center position of the movable die seat plate 21 which is arranged in parallel with the fixed die seat plate 11 is vertically penetrated with an injection molding machine ejector rod through hole 211, and the injection molding machine ejector rod can be ejected into the movable die assembly 2 through the injection molding machine ejector rod through hole 211; at least two cushion blocks 22 are arranged and symmetrically and fixedly arranged on the upper surface of the movable die seat plate 21; a movable mould supporting plate 23 arranged in parallel with the movable mould base plate 21 is arranged on the cushion block 22 and fixedly connected with the cushion block 22; the movable mold plate 24 and the mold core 25 which are fixedly installed into an integral structure are integrally and fixedly installed on the upper surface of the movable mold support plate 23, the upper surface of the mold core 25 is flush with the upper surface of the movable mold plate 24, two upper convex core structures which are the same as the external dimensions of the inner surface part of the temperature measuring gun shell plastic part 4 are arranged on the upper surface of the mold core 25 corresponding to the cavity 13, guide posts which are matched with the guide sleeves of the fixed mold plate 12 in size are fixedly arranged on the movable mold plate 24 corresponding to the guide sleeves of the fixed mold plate 12, the guide posts penetrate through the guide sleeves, a guiding function is realized when the fixed mold assembly 1 and the movable mold assembly 2 are opened, a reset rod through hole, a thimble through hole and a material pulling hole are vertically penetrated through the movable mold support plate 23 and the mold core 25, the material pulling hole is arranged opposite to the inner hole of the sprue bush 14, a cooling water pipe connector is also arranged on the movable mold plate 24, and the cooling water pipe connector is communicated with a cooling water channel penetrating through the movable mold plate 24 and the mold core 25; the ejector die mechanism 26 comprises a push plate 261, a push plate guide sleeve, a push plate guide post, a thimble, a reset rod and a pull rod 262, wherein the push plate 261 which is arranged in parallel with the movable die seat plate 21 is arranged in a frame structure surrounded by two cushion blocks 22, the push plate guide sleeve vertically penetrates through the push plate 261 and is fixedly connected with the push plate 261, the vertically arranged push plate guide post is matched with the push plate guide sleeve in a size manner and is connected in the push plate guide sleeve in a penetrating manner, two ends of the push plate guide post are respectively and fixedly connected with the movable die seat plate 21 and the movable die support plate 23, the thimble is in clearance fit with a thimble through hole, the reset rod is in clearance fit with the reset rod through hole, the bottom of vertically setting thimble and reset lever is fixed mounting respectively in push pedal 261 just to the position of thimble through-hole and reset lever through-hole, and thimble and reset lever's top penetrates thimble through-hole and reset lever through-hole respectively in, draw material pole 262 and draw material hole clearance fit, the bottom fixed mounting of vertically setting draw material pole 262 is in push pedal 261 just to drawing the position of material hole, and draw material pole 262's top penetrates drawing the material hole, draw material pole 262 top still is equipped with "Z" font step or dovetailed step for fixed injection molding material after solidifying, clearance fit's thimble, reset lever and draw material pole 262 can exhaust when moulding plastics, the lower surface of fixed die plate 12 and the upper surface of movable die plate 24 form the die joint.

The two sets of the compound lateral parting and core pulling mechanism 3 are arranged corresponding to the cavity 13, and the compound lateral parting and core pulling mechanism 3 comprises a large-side-extraction-distance inner side extraction part corresponding to the temperature measuring probe mounting sleeve 42, a small-side-extraction-distance inner side extraction part corresponding to the temperature measuring gun shell cover plate mounting buckle 43 and a linkage control part for sequentially controlling the small-side-extraction-distance inner side extraction part and the large-side-extraction-distance inner side extraction part step by step during die opening;

as shown in fig. 5, the large side extraction distance inner side extraction part comprises a cylindrical large inner side core-pulling structure 31 matched with the inner diameter size of the temperature probe mounting sleeve 42, the large inner side core-pulling structure 31 is mounted on the core 25 in a guiding sliding fit through a large inner side extraction guide hole arranged in the core 25, and the large inner side core-pulling structure 31 can move towards the inner side direction of the core 25 along the axial direction of the large inner side extraction guide hole so as to realize inner side extraction of the large side extraction distance or move towards the outer side direction of the core 25 so as to realize resetting action during mold closing;

because the temperature probe mounting sleeve 42 and the two symmetrically arranged temperature measuring gun housing cover plate mounting buckles 43 are in a space vertical crossing relationship, and the two temperature measuring gun housing cover plate mounting buckles 43 have smaller inner side extraction distances, in order to avoid additionally occupying mounting space for the inner side core-pulling of the temperature measuring gun housing cover plate mounting buckles 43, a mounting structure is adopted, in which the inner side extraction parts of the small side extraction distances are compositely arranged on the inner side extraction parts of the large side extraction distances, namely, as shown in fig. 6, a notch structure 311 which is downwards opened is arranged on the large inner side core-pulling 31, the inner side extraction parts of the small side extraction distances comprise small inner side core-pulling 32, the inner side extraction direction of the small inner side core-pulling 32 and the inner side extraction direction of the large inner side core-pulling 31 are in a space vertical crossing relationship, as shown in fig. 7, the small inner side core-pulling 32 comprises small inner side extraction rods 321 which are symmetrically arranged into two parts relative to the axial middle part of the large inner side core-pulling 31, the top end of the small inner side extraction rod 321 which is vertically arranged is provided with an inner side core-pulling structure which is arranged in a protruding way in the direction away from the axial middle part of the large inner side core-pulling 31 and has the same external dimension as the internal surface part of the cover plate mounting buckle 43 of the temperature measuring gun shell, as shown in fig. 8 to 10, when in a mold closing state, the two small inner side extraction rods 321 are in a stretching state away from the axial middle part of the large inner side core-pulling 31, the two small inner side extraction rods 321 are positioned in the opening structure 311 of the large inner side core-pulling 31, at the moment, the inner side core-pulling structure at the top end of the small inner side extraction rod 321 is matched with the core 25 to form a mold filling space of the cover plate mounting buckle 43 of the temperature measuring gun shell, when in the mold opening state, the two small inner side extraction rods 321 are in a closing state close to the axial middle part of the large inner side core-pulling 31, and the two small inner side extraction rods 321 are separated from the opening structure 311 of the large inner side core-pulling 31, at this time, the side pulling action of the large inner core pulling 31 along the axial direction is not affected;

As shown in fig. 5, the interlocking control section includes a small inside core-pulling control assembly 33 and a large inside core-pulling control assembly 34;

the small inner core pulling control assembly 33 comprises a small inner drawing guide rod 331 and a transmission assembly, wherein the transmission assembly comprises a transmission connecting plate 332, a transmission driven rod 333, a transmission swing rod 334, a transmission driving rod 335 and a transmission supporting frame 337; the small inner side drawing guide rod 331 which is vertically arranged is arranged inside the movable mould component 2 in a guiding and sliding way, the top end of the small inner side drawing guide rod 331 is obliquely arranged with the small inner side drawing rod 321 along the inner side drawing direction of the small inner side drawing rod 321, and the translation guide control structure I3311 which is symmetrically arranged relative to the axial middle division plane of the large inner side core drawing 31 is installed and connected, the translation guide control structure I3311 can be a guide through groove which is obliquely arranged as shown in figure 7, a sliding pin structure which is matched with the small inner side drawing rod 321, a dovetail groove which is obliquely arranged, a dovetail bulge structure which is matched with the small inner side drawing rod 321 and other translation guide control structures such as the like, the two small inner side drawing rods 321 can be in a mode of opening and closing the axial middle split surfaces of the large inner side drawing cores 31 or in a mode of closing Bi Kaimo of the two small inner side drawing rods 321 close to the axial middle split surfaces of the large inner side drawing cores 31 by controlling the small inner side drawing guide rods 331 to move up and down along the vertical direction, in order to ensure the stability of the operation of the small inner side drawing rods 321, the translation guide control structures I3311 can be arranged into a plurality of groups in parallel along the up and down direction, the bottom ends of the small inner side drawing guide rods 331 are fixedly connected with the horizontally arranged transmission connecting plates 332, as shown in fig. 6, the rod bodies of the small inner side drawing guide rods 331 are also provided with guide sliding grooves I3312 along the axial direction of the rod bodies, and the length stroke size of the guide sliding grooves I3312 is not smaller than the depth size of the opening structures 311; the transmission support frame 337 is fixedly installed on the movable mold assembly 2, in order to avoid the additional occupation of installation space, the transmission support frame 337 can be arranged inside the movable mold assembly 2 corresponding to the small inner side drawing guide rod 331, as shown in fig. 5, the transmission swing rod 334 is arranged inside the transmission support frame 337, the middle part of the transmission swing rod 334 is hinged on the transmission support frame 337, the transmission driven rod 333 and the transmission driving rod 335 which are vertically and parallelly arranged are respectively arranged corresponding to the two ends of the transmission swing rod 334, the transmission driven rod 333 and the transmission driving rod 335 are both arranged on the transmission support frame 337 through guide structures which are arranged along the vertical direction, the top end of the transmission driven rod 333 and one end of the transmission swing rod 334 are connected with the transmission swing rod 334 through a sliding pin I3331 and an arc-shaped sliding groove I3341 which is arranged at one end of the transmission swing rod 334 and is in sliding fit with the sliding pin I3331, the bottom end of the driving driven rod 333 is fixedly connected with the driving connecting plate 332, the bottom end of the driving rod 335 is fixedly connected with the driving oscillating rod 334 through a sliding pin II 3351 and an arc-shaped sliding groove II 3342 which is arranged at the other end of the driving oscillating rod 334 and is in sliding fit with the sliding pin II 3351, the top end of the driving rod 335 is fixedly connected with the fixed die assembly 1 for facilitating the installation and connection, the top end of the transmission driving rod 335 can be directly fixedly connected with the fixed die seat plate 11, the arrangement of the arc chute I3341 and the arc chute II 3342 of the transmission swinging rod 334 can realize the vertical downward (or upward) movement of the transmission driven rod 333 which drives the radial positioning when the transmission driving rod 335 is radially positioned and vertically moved upwards (or downwards) relative to the movable die assembly 2 in the process of die opening (or die closing), and then the small inner side extraction guide rod 331 is driven to vertically move downwards (or upwards) by the transmission connecting plate 332;

As shown in fig. 6 and 11, the large inner core pulling control assembly 34 includes a linkage power rod 341 and a linkage assembly, and the linkage assembly includes a linkage driven rod 342, a linkage swing rod 343 and a linkage support frame 344; the movable die assembly 2 is fixedly arranged in the movable die assembly 344, one end of the linkage power rod 341 is connected with the small inner side drawing guide rod 331 through a sliding pin III 3411 which is arranged in the guide chute I3312 and is in sliding fit with the guide chute I3312, the other end of the linkage power rod 341 extends into the linkage support frame 344 and is connected with the linkage support frame 344 through a sliding pin IV 3412 and an arc chute III 3441 which is arranged on the linkage support frame 344 and is in sliding fit with the sliding pin IV 3412, one end of a linkage driven rod 342 which is arranged in the linkage support frame 344 is hinged with the linkage power rod 341 through the sliding pin IV 3412, the other end of the linkage driven rod 342 is connected with the linkage support frame 344 through a sliding pin V3431 and an arc chute IV 3442 which is arranged on the linkage support frame 344 and is in sliding fit with the sliding pin V3431, the bottom end of the linkage 343 is hinged with the linkage support frame 344 and corresponds to the moving direction of the large inner side core pulling rod 31, the top end of the linkage 343 is hinged with the linkage driven rod 342 through the sliding pin V3431, the top end of the linkage driven rod 342 is provided with a guide chute IV 32 which is arranged along the axial direction of the sliding rod 34II and is arranged in the sliding fit with the large inner side sliding rod 33, and the top end of the swing rod is arranged in the large inner side 33 is not in the sliding fit with the sliding rod 33, and can be conveniently machined.

When the injection mold for the plastic part of the temperature measuring gun shell is in a mold closing state, as shown in fig. 4 to 7, the fixed mold assembly 1 and the movable mold assembly 2 are attached together up and down, at this time, the lower surface of the fixed mold plate 12 is attached to the upper surface of the movable mold plate 24, the large inner core-pulling 31 is relatively located in the outer side direction of the core 25, the opening structure 311 of the large inner core-pulling 31 is opposite to the small inner core-pulling 32, the small inner core-pulling rod 321 in the opening structure 311 is in an expanding state far away from the axial middle-split surface of the large inner core-pulling 31, the small inner core-pulling guide rod 331, the transmission connecting plate 332 and the transmission driven rod 333 of the small inner core-pulling control assembly 33 are all located at the upper limit positions of the upper and lower strokes of the fixed mold assembly, the transmission driving rod 335 of the small inner core-pulling control assembly 33 is in a state retracted into the transmission support frame 337, the linkage power rod 341 of the large inner core-pulling control assembly 34 is located at the lower limit position of the guide chute I3312 of the small inner core-pulling rod 331 through the sliding pin III 3411, the sliding pin IV 3412 is located at the inner limit position of the arc chute III 3441, the sliding pin V3431 is located at the inner limit position of the arc chute IV 3442, the small inner limit position of the sliding pin IV 3431 is located at the upper limit position of the arc chute IV 3442, and the cushion block top mechanism 26 is located at the upper limit position of the top end of the upper end of the frame 22 of the movable mold plate 24 and the upper limit structure is flush with the upper limit surface of the movable mold plate 24. In the mold closing state, the upper concave cavity structure of the lower surface of the cavity 13, the upper convex core structure of the upper surface of the core 25, the large inner core-pulling 31 and the small inner core-pulling 32 jointly enclose a mold filling space of the temperature measuring gun shell.

When the whole injection mold of the temperature measuring gun shell in the mold closing state is clamped on the injection molding machine for injection molding operation, the temperature measuring gun shell can be installed on the horizontal injection molding machine in a horizontal installation mode (the vertical direction shown in fig. 4 is the front-back direction of the working state, namely the front-back direction of the mold opening and closing), or installed on the vertical injection molding machine in a vertical installation mode (the vertical direction shown in fig. 4 is the upper-lower direction of the working state, namely the direction of the mold opening and closing), for example, the movable mold seat plate 21 of the movable mold assembly 2 is fixedly installed on a movable mold plate of a machine tool, the ejector rod through holes 211 of the injection molding machine are aligned with the ejector rod of the movable mold plate of the machine tool, the fixed mold seat plate 11 of the fixed mold assembly 1 is fixedly installed on the fixed mold plate of the machine tool, and the cooling water pipe joints on the fixed mold plate 12 and the movable mold plate 24 are connected with a cooling water source through a pipeline;

injection molding is performed in the mold closing state as described above: the injection molding material with pressure is extruded into a temperature measuring gun shell plastic part injection mold through a sprue bush 14, under the effect of injection molding pressure, the injection molding material is rapidly filled with a temperature measuring gun shell plastic part filling space surrounded by an upper concave cavity structure on the lower surface of a cavity 13, an upper convex core structure on the upper surface of a core 25, a large inner core-pulling 31 and a small inner core-pulling 32 together, and the pump pressure is stopped when the injection molding pressure reaches a set pressure; the cooling water in the fixed die plate 12 and the movable die plate 24 is immediately cooled circularly to cool the fixed die plate 12 and the movable die plate 24, and the injection molding material in the filling space is quickly solidified and molded;

After the injection molding material is solidified and molded, opening the mold and taking materials: starting the injection molding machine to enable the movable mould plate of the injection molding machine to move down and move away from the mould, as shown in fig. 15 and 16, in the process that the movable mould assembly 2 is driven to move down by the movable mould plate of the injection molding machine, the transmission driving rod 335 of the small inner core-pulling control assembly 33 moves upwards relative to the movable mould assembly 2, and then the transmission driving rod 335 drives the transmission driven rod 333, the transmission connecting plate 332 and the small inner core-pulling guide rod 331 to integrally move downwards through the transmission swinging rod 334; as shown in fig. 7 to 10, in the downward movement process of the small inner side extraction guide rods 331, the two small inner side extraction rods 321 are driven by the translational guide control structure i 3311 to move in the direction close to the axial middle plane of the large inner side core-pulling 31, after the two small inner side extraction rods 321 are in a closed Bi Kai mode close to the axial middle plane of the large inner side core-pulling 31, the small inner side extraction guide rods 331 continue to move downward, and then the two small inner side extraction rods 321 move downward along with the small inner side extraction guide rods 331 to leave the notch structure 311, so as to complete the inner side extraction action of the small inner side core-pulling 32; meanwhile, as shown in fig. 6, 11 and 16, the linkage power rod 341 is in a stationary state with respect to the small inside extraction guide rod 331 during the downward movement of the small inside extraction guide rod 331, i.e., the guide chute i 3312 moves downward relative to the slide pin iii 3411, after the above-described inner withdrawal of the small inner core back 32 is completed, the sliding pin III 3411 is located at the upper limit position of the sliding chute I3312, and the small inner drawer guide rod 331 moves downwards, the small inner drawing guide rod 331 can drive the linkage power rod 341 to move downwards through the guide chute i 3312 and the sliding pin iii 3411, as shown in fig. 11, in the course of the downward movement of the linkage power rod 341, while the forward swinging movement is performed along the arc chute iii 3441 by the slide pin iv 3412, the linkage driven rod 342 is pulled by the slide pin iv 3412 to make the linkage driven rod 342 perform the forward swinging movement along the arc chute iv 3442 by the slide pin v 3431, meanwhile, the linkage driven rod 342 drives the linkage oscillating bar 343 to do reverse oscillating motion relative to the linkage support frame 344 through the sliding pin V3431, meanwhile, the linkage swing rod 343 drives the large inner core-pulling piece 31 to move towards the inner side of the core 25 through the guide sliding groove II 3432 and the sliding pin VI 3433 to realize the inner side pulling action of the large inner core-pulling piece 31, at the moment, because the two small inner side pulling pieces 321 move downwards along with the small inner side pulling guide rod 331 to leave the notch structure 311, therefore, the side pulling action of the large inner core-pulling 31 along the axial direction of the large inner core-pulling 31 is not influenced until the movable die plate of the machine tool moves downwards to a set distance and stops moving downwards, at the moment, the injection die of the plastic part of the temperature measuring gun shell is in a fully opened state as shown in fig. 17 and 18, and the inner side pulling action of the large inner core-pulling 31 is completed, at the moment, as shown in fig. 13, the sliding pins IV 3412 and the sliding pins V3431 respectively move to the outer limit positions of the arc-shaped sliding grooves III 3441 and IV 3442; the ejector rod of the injection molding machine is controlled to eject from the movable mould plate of the machine tool, the ejector rod of the injection molding machine passes through the ejector rod through hole 211 of the injection molding machine to be propped against the push plate 261 of the ejector mould mechanism 26, the ejector plate 261 drives the ejector pins, the reset rod and the pull rod to eject from the reset rod through hole, the ejector pin through hole and the pull rod through hole respectively, the molded temperature measuring gun shell plastic part 4 is ejected out of the mould core 25, the ejector mould action is completed, and an operator directly takes down the molded temperature measuring gun shell plastic part 4;

And (3) taking down the molded temperature measuring gun shell plastic part 4 and then carrying out die assembly: the ejector rod of the injection molding machine is controlled to retract into the machine tool firstly, then the movable template of the machine tool moves upwards to enable the movable die assembly 2 to be attached to the fixed die assembly 1, and in the die assembly process, the reset rod drives the push plate 261, the ejector pin and the material pulling rod to be synchronously pushed back to an initial state by the fixed template 12; simultaneously, the transmission driving rod 335 of the small inner core-pulling control assembly 33 moves downwards relative to the movable mould assembly 2, so that the transmission driving rod 335 drives the transmission driven rod 333, the transmission connecting plate 332 and the small inner extraction guide rod 331 to integrally move upwards through the transmission swinging rod 334, the small inner extraction guide rod 331 can drive the linkage power rod 341 to move upwards through the guide chute I3312 and the sliding pin III 3411 to reset, during the upward movement process of the linkage power rod 341, the linkage driven rod 342 is driven to swing reversely along the arc-shaped chute IV 3442 through the sliding pin IV 3412 while the linkage driven rod 342 is driven to swing reversely along the arc-shaped chute IV 3442 through the sliding pin IV 3412, and meanwhile, the linkage driven rod 342 drives the linkage swinging rod 343 to swing positively relative to the linkage support frame 344 through the sliding pin V3431, meanwhile, the linkage swing rod 343 drives the large inner core-pulling rod 31 to move towards the outer side of the core 25 through the guide sliding groove II 3432 and the sliding pin VI 3433, the reset action of the large inner core-pulling rod 31 towards the outer side is realized, after the large inner core-pulling rod 31 is reset, the sliding pin IV 3412 and the sliding pin V3431 respectively move to the inner side limit positions of the arc sliding groove III 3441 and the arc sliding groove IV 3442, at the moment, the linkage power rod 341 can not move towards the inner side any more to be positioned, the small inner side extraction guide rod 331 continues to move upwards, the small inner side extraction guide rod 331 moves upwards relative to the linkage power rod 341 through the guide sliding groove I3312, after the top ends of the two small inner side extraction rods 321 enter the notch structure 311 of the large inner side core-pulling rod 31 and touch the large inner side core-pulling rod 31, the two small inner side extraction rods 321 can move towards the direction away from the axial middle part of the large inner side 31 under the guide pushing action of the translation guide control structure I3311 to reset until the movable die core-pulling assembly 2 is attached to the fixed die assembly 1, and (3) completing the die assembly action, and performing injection molding again.

In order to smoothly drive the linkage power rod 341 to move upwards to reset through the guide chute I3312 and the sliding pin III 3411 during mould closing, as a further improvement scheme of the invention, as shown in FIG. 6, the top end of the guide chute I3312 is provided with a hook-shaped chute structure 3313 which corresponds to the swinging direction of the linkage swing rod 343 and extends outwards, the width dimension of the hook-shaped chute structure 3313 which is communicated with the guide chute I3312 is the same as the width dimension of the guide chute I3312, the hook-shaped chute structure 3313 is obliquely arranged downwards, and the extension length dimension of the hook-shaped chute structure 3313 is not less than the outer diameter dimension of the sliding pin III 3411; the sliding pin iii guide groove 231 is arranged at the extending position of the movable mould component 2 corresponding to the hook-shaped groove structure 3313, as shown in fig. 19 and 20, the sliding pin iii guide groove 231 comprises an inclined guide transition section at the upper end and a vertical guide section vertically arranged below the inclined guide transition section, the inclined guide transition section is obliquely arranged inwards and upwards corresponding to the hook-shaped groove structure 3313, a spring ejector block 232 capable of being positioned in a telescopic manner is further arranged at the butt joint corner position of the inclined guide transition section and the vertical guide section, and the spring ejector block 232 is in a normally closed state for blocking the sliding pin iii guide groove 231 in a mould closing state. As shown in fig. 19, in the mold closing state, the spring top block 232 is in a state of blocking the guide groove 231 of the sliding pin iii, and at this time, the sliding pin iii 3411 located at the lower limit position of the guide groove i 3312 is positioned at the top end of the inclined guide transition section of the guide groove 231 of the sliding pin iii under the restriction action of the guide groove i 3312; as shown in fig. 20, during mold opening, after the inner side pulling action of the small inner side core pulling 32 is to be completed, the sliding pin iii 3411 is relatively located at the upper limit position of the guide chute i 3312, at this time, the small inner side pulling guide rod 331 continues to move downward to drive the sliding pin iii 3411 to move downward synchronously, at this time, the sliding pin iii 3411 forces the spring top block 232 to yield under the guiding action of the inclined guiding transition section of the sliding pin iii guide chute 231, and then enters the vertical guiding section through the inclined guiding transition section, and at the same time, the sliding pin iii 3411 is displaced relative to the guide chute i 3312 under the guiding action of the sliding pin iii guide chute 231 and is stably located in the hook-shaped chute structure 3313; during die assembly, the small inner side core pulling guide rod 331 can drive the sliding pin III 3411 to vertically move upwards along the sliding pin III guide groove 231 through the hook-shaped groove structure 3313 in the upward movement process, when the sliding pin III 3411 contacts the spring top block 232 and then the small inner side core pulling guide rod 331 continues to move upwards, the sliding pin III 3411 presses the spring top block 232 to give way, the sliding pin III 3411 is separated from the sliding pin III guide groove 231 through the inclined guide transition section, meanwhile, the sliding pin III 3411 moves under the guide action of the inclined guide transition section to enter the guide chute I3312 and is positioned at the upper limit position of the guide chute I3312, at the moment, the large inner side core pulling 31 has completed the outward reset action, and the small inner side core pulling guide rod 331 continues to move upwards, and then the small inner side core pulling guide rod 331 moves upwards relative to the linkage power rod 341 through the guide chute I3312 to reset the small inner side core pulling guide rod 32.

For the small side extraction distance inner side extraction part, as the temperature measuring gun shell cover plate mounting buckle 43 is provided with a protruding structure protruding towards the axial middle plane direction of the large inner side core-pulling 31, in order to facilitate demoulding, as a further improvement scheme of the invention, as shown in fig. 7 to 10, the small inner side core-pulling 32 further comprises a small inner side extraction block 322 which is symmetrically arranged in two parts relative to the axial middle plane of the large inner side core-pulling 31, the small inner side extraction block 322 is arranged at the position of the core 25 corresponding to the small inner side core-pulling 32 through a translation guiding control structure II which is symmetrically arranged left and right, the position of the core 25 corresponding to the small inner side core-pulling 32 is also provided with a small inner side core-pulling accommodating space which is matched with the external dimension of the small inner side extraction block 322 and can allow the small inner side extraction block 322 to retract into the core 25, the translation guiding control structure II comprises a sliding pin VII which is connected with the small inner side extraction block 251 and a sliding guide groove III 252 which is matched with the sliding pin VII 251, the guide chute III 252 of the L-shaped structure comprises a horizontal section corresponding to the position of the small inner core-pulling accommodating space and a vertical section communicated with the outer side end of the horizontal section and extending upwards, so that the translation guide control structure II can be arranged into a plurality of groups along the up-down direction in parallel, the bottom end of the small inner core-pulling block 322 is of a slope structure, the top end of the slope structure is provided with a dovetail groove or a dovetail bulge structure arranged along the slope structure, the top end of the small inner core-pulling rod 321 is inclined towards the slope structure position corresponding to the bottom end of the small inner core-pulling block 322, which is far away from the axial middle-split direction of the large inner core-pulling rod 31, and the dovetail bulge or the dovetail groove structure matched with the dovetail groove or the dovetail bulge structure of the small inner core-pulling block 322 is arranged. As shown in fig. 8, in the mold closing state, the slide pin vii 251 is located at the top end limit position of the vertical section of the guide chute iii 252, and at this time, the top end face of the small inside withdrawal block 322 is in a state of being flush with and abutting against the top plane of the core 25 corresponding to the position of the small inside core-pulling piece 32, and the outer end face of the small inside withdrawal block 322 is in a state of being flush with and abutting against the outer end face of the inside core-pulling structure at the top end of the small inside withdrawal rod 321, and the top end face of the small inside withdrawal block 322, the outer end face of the small inside withdrawal block 322, and the outer end face of the inside core-pulling structure at the top end of the small inside withdrawal rod 321 enclose the outer end face of the small inside core-pulling piece 32 together; when the mold is opened, the small inner side extraction guide rods 331 are driven to move in a direction close to the axial middle parting surface of the large inner side core pulling 31 by the translation guide control structure I3311 in the downward movement process of the small inner side extraction guide rods 331, as shown in fig. 9, the small inner side extraction blocks 322 are driven to firstly move down in a translation mode along the guide sliding grooves III 252 by the matched inclined surface structure and the dovetail protrusions or the dovetail groove structures in a translation mode, and then move in a translation mode until the sliding pins VII 251 move to the limit position of the inner side ends of the horizontal sections of the guide sliding grooves III 252, the small inner side extraction blocks 322 retract into the small inner side core pulling accommodating space of the mold core 25, the yielding shrinkage of the small inner side extraction blocks 322 is completed, at this time, the small inner side extraction rods 321 continue to move in a direction close to the axial middle parting surface of the large inner side core pulling 31 under the guide effect of the translation guide control structure I3311, and the dovetail protrusions or the dovetail groove structures of the small inner side extraction rods 321 are separated from the grooves or the dovetail protrusion structures until the two small inner side extraction rods 321 are in a state of being close to the axial middle parting surface of the large inner side core pulling 31, and the small inner side extraction blocks 321 continue to move downwards along the small inner side extraction blocks Bi Kaimo in the axial direction of the small inner side extraction blocks 331 as shown in the guide structure 331, and the downward movement of the small inner side extraction guide rods 331 is continued to move downward as shown in fig. 10; the mold closing process is the reverse process of the mold opening process, the two small inner side drawing rods 321 move towards the direction far away from the axial bisection surface of the large inner side core pulling 31, the dovetail protrusions or dovetail groove structures of the small inner side drawing rods 321 are in butt joint with the dovetail grooves or dovetail protrusion structures of the small inner side drawing blocks 322, and the small inner side drawing rods 321 drive the small inner side drawing blocks 322 to move in a translational mode along the guide sliding grooves III 252 in an outward direction firstly and then to move in a translational mode to reset, and the detailed description is omitted.

In order to avoid movement jam caused by movement of the sliding pin I3331 and the sliding pin II 3351 in the arc-shaped chute I3341 and the arc-shaped chute II 3342 respectively and realize guarantee of swinging angle and swinging stroke of the transmission swinging rod 334, as a further improvement scheme of the invention, the transmission assembly further comprises an auxiliary spring 336 arranged in the transmission supporting frame 337, one end of the auxiliary spring 336 is connected with the transmission supporting frame 337, the other end of the auxiliary spring 336 is connected with the transmission swinging rod 334, the auxiliary spring 336 can be a tension spring structure which is arranged on one side of the transmission driven rod 333 and is connected with one end of the transmission swinging rod 334 as shown in fig. 5, the auxiliary spring 336 can also be a pressure spring structure which is arranged on one side of the transmission driving rod 335 and is connected with the other end of the transmission swinging rod 334, and the auxiliary spring 336 is in a fully stretched state of storing force as shown in fig. 5 in the mold state.

In order to facilitate the large inner core pulling 31 to move to the inner side or the outer side by the linkage power rod 341 driving the linkage swing rod 343 through the linkage driven rod 342 during the mold opening or the mold closing, as a further improvement of the present invention, as shown in fig. 12 and 14, a spring top pin 3443 capable of being positioned in a telescopic manner is further provided on the linkage support frame 344 at a position corresponding to the inner side end and/or the outer side end of the arc chute iv 3442, the telescopic direction of the spring top pin 3443 is opposite to the sliding pin v 3431, and the telescopic end of the spring top pin 3443 stretches into the arc chute iv 3442. Taking the example that the spring ejector pin 3443 is arranged at the outer side end position of the arc-shaped chute IV 3442, as shown in fig. 12, the telescopic end of the spring ejector pin 3443 stretches into the arc-shaped chute IV 3442 in the mold closing state, as shown in fig. 14 after mold opening, the sliding pin V3431 is positioned at the outer side limit position of the arc-shaped chute IV 3442, at the moment, the spring ejector pin 3443 is in an elastic force accumulation state pressed by the sliding pin V3431 to be ejected away from the interior of the arc-shaped chute IV 3442, and the spring ejector pin 3443 in the elastic force accumulation state can release elasticity to provide auxiliary power for pushing the sliding pin V3431 to move along the arc-shaped chute IV 3442 in the mold closing state.

In order to reasonably control the swing angle of the transmission swing link 334 and further reasonably control the up-down movement distance of the transmission driving rod 335 and the transmission driven rod 333, as a further improvement scheme of the invention, a transmission swing link swing angle limiting structure is arranged on the transmission support frame 337 corresponding to the position of the transmission swing link 334, or a transmission connecting plate limiting structure is arranged on the cushion block 22 of the movable die assembly 2 corresponding to the position of the transmission connecting plate 332.

When the plastic part is ejected through the ejector mechanism 26 after the mold is opened, in order to avoid the reset action of the linkage control part caused by the push plate 261 pushing the transmission connection plate 332, as a further improvement scheme of the invention, the transmission connection plate 332 is arranged in parallel with the push plate 261, and a through groove which can allow the transmission connection plate 332 to pass through is arranged on the push plate 261 corresponding to the position of the transmission connection plate 332.

This compound side direction parting and core-pulling mechanism and injection mold is to need carrying out perpendicular two direction side drawers that cross, and two direction side drawers need one have big side drawer distance one have little side drawer distance, two direction side drawers have the complex structure plastic part that moves the interference in side drawer direction because of the interval is too near simultaneously, can realize avoiding the inboard side parting of interference and core-pulling under the prerequisite that realizes injection mold overall structure compactness, does not set up extra outside power of taking out.

Claims

1. The composite lateral parting and core pulling mechanism is characterized in that the composite lateral parting and core pulling mechanism (3) comprises a large-side-extraction-distance inner side extraction part, a small-side-extraction-distance inner side extraction part and a linkage control part;

the large side extraction distance inner side extraction part comprises a large inner side core extraction (31), the large inner side core extraction (31) is installed on the core (25) in a guiding sliding fit manner through a large inner side extraction guide hole arranged in the core (25), and a notch structure (311) which is opened downwards is arranged on the large inner side core extraction (31);

the small side extraction distance inner side extraction part comprises a small inner side core extraction part (32), the inner side extraction direction of the small inner side core extraction part (32) and the inner side extraction direction of the large inner side core extraction part (31) are in a space vertical crossing relation, the small inner side core extraction part (32) comprises small inner side extraction rods (321) which are symmetrically arranged into two parts relative to the axial middle division surface of the large inner side core extraction part (31), and the top end of the small inner side extraction rod (321) which is vertically arranged is provided with an inner side core extraction structure which extends towards the direction far away from the axial middle division surface of the large inner side core extraction part (31);

the linkage control part comprises a small inner core-pulling control component (33) and a large inner core-pulling control component (34);

the small inner core pulling control assembly (33) comprises a small inner core pulling guide rod (331) and a transmission assembly, the small inner core pulling guide rod (331) which is vertically arranged is arranged inside the movable die assembly (2) in a guiding sliding fit manner along the vertical direction, the top end of the small inner core pulling guide rod (331) is connected with the small inner core pulling rod (321) through a translation guide control structure I (3311) which is symmetrically arranged relative to the axial middle surface of the large inner core pulling (31), a guide chute I (3312) which is arranged along the axial direction of the rod body of the small inner core pulling guide rod (331) is also arranged on the transmission assembly which is arranged on the movable die assembly (2);

The large inner core-pulling control assembly (34) comprises a linkage power rod (341) and a linkage assembly, one end of the linkage power rod (341) is installed and connected with the small inner core-pulling guide rod (331) through a sliding pin III (3411) which is arranged in the guide chute I (3312) and is in sliding fit with the guide chute I (3312), the linkage assembly is installed inside the movable die assembly (2), the linkage assembly comprises a linkage swing rod (343), the swing direction of the linkage swing rod (343) corresponds to the moving direction of the large inner core-pulling assembly (31), the other end of the linkage power rod (341) is in transmission connection with the linkage swing rod (343), a guide chute II (3432) which is arranged along the axial direction of the linkage swing rod (343) is arranged at the top end of the linkage swing rod (343), and the top end of the linkage swing rod (343) is hinged and installed and connected with the large inner core-pulling assembly (31) through a sliding pin VI (3433) which is arranged in the guide chute II (3432) in a sliding fit manner.

When in a die closing state, the two small inner side drawing rods (321) are in a spreading state far away from the axial middle division surface of the large inner side core pulling (31), the two small inner side drawing rods (321) are positioned in the opening structure (311), and the linkage power rod (341) is positioned at the lower limit position of the guide chute I (3312) through the sliding pin III (3411);

when the die is opened, the transmission assembly of the small inner core pulling control assembly (33) controls the small inner core pulling guide rod (331) to vertically move downwards, the guide sliding groove I (3312) moves downwards relative to the sliding pin III (3411), the small inner core pulling guide rod (331) controls the two small inner core pulling rods (321) to be in a closing state close to the axial middle split surface of the large inner core pulling (31) firstly through the translation guide control structure I (3311), then the small inner core pulling guide rod (331) moves downwards to be separated from the notch structure (311), the sliding pin III (3411) is relatively positioned at the upper limit position of the guide sliding groove I (3312) after the inner core pulling action of the small inner core pulling (32) is completed, the small inner core pulling guide rod (331) drives the linkage power rod (341) to move downwards through the guide sliding groove I (3312) and the sliding pin III (3411), the linkage power rod (341) drives the swing rod (343) to drive the large inner core pulling (31) to move towards the large inner core pulling (25) through the guide sliding groove II (3432) and the sliding pin VI (33), and the large inner core pulling action (31) is realized.

2. The composite lateral parting and core pulling mechanism according to claim 1, wherein the transmission assembly of the small inner core pulling control assembly (33) comprises a transmission connecting plate (332), a transmission driven rod (333), a transmission swinging rod (334), a transmission driving rod (335) and a transmission supporting frame (337); the bottom end of the small inner side extraction guide rod (331) is fixedly connected with the transmission connecting plate (332); the transmission support frame (337) is fixedly arranged on the movable die assembly (2), the transmission swing rod (334) is arranged inside the transmission support frame (337), the middle part of the transmission swing rod (334) is hinged to the transmission support frame (337), the transmission driven rod (333) and the transmission driving rod (335) which are vertically arranged in parallel are respectively arranged at two ends of the transmission swing rod (334), the transmission driven rod (333) and the transmission driving rod (335) are arranged on the transmission support frame (337) through guide structures which are arranged along the direction of the vertical direction, the top end of the transmission driven rod (333) and one end of the transmission swing rod (334) are connected with the transmission swing rod (334) through a sliding pin I (3331) and an arc-shaped chute I (3341) which is arranged at one end of the transmission swing rod (334) and is in sliding fit with the sliding pin I (3331), the bottom end of the transmission driven rod (333) is fixedly connected with the transmission connecting plate (332), the bottom end of the transmission driving rod (335) and the other end of the transmission driving rod (334) are connected with the arc-shaped chute (3351) which is in sliding fit with the sliding pin I (3331) through a sliding pin II (3351) and the other end of the transmission driving rod (334).

3. The composite lateral parting and core pulling mechanism according to claim 2, wherein the transmission assembly of the small inner core pulling control assembly (33) further comprises an auxiliary spring (336) arranged inside the transmission support frame (337), one end of the auxiliary spring (336) is connected with the transmission support frame (337), the other end of the auxiliary spring is connected with the transmission swing rod (334), the auxiliary spring (336) is a tension spring structure arranged on one side of the transmission driven rod (333) and connected with one end of the transmission swing rod (334), or the auxiliary spring (336) is a compression spring structure arranged on one side of the transmission driving rod (335) and connected with the other end of the transmission swing rod (334).

4. The composite lateral parting and core pulling mechanism according to claim 2, wherein a transmission swing rod swing angle limiting structure is arranged on the transmission support frame (337) corresponding to the transmission swing rod (334), or a transmission connecting plate limiting structure is arranged on the movable die assembly (2) corresponding to the transmission connecting plate (332).

5. The composite lateral parting and core pulling mechanism as defined in claim 1, wherein the linkage assembly of the large inner core pulling control assembly (34) further comprises a linkage driven rod (342) and a linkage support frame (344); the linkage support frame (344) is fixedly arranged in the movable mould assembly (2), the other end of the linkage power rod (341) extends into the linkage support frame (344) and is connected with the linkage support frame (344) through a sliding pin IV (3412) and an arc-shaped sliding groove III (3441) which is arranged on the linkage support frame (344) and is in sliding fit with the sliding pin IV (3412), one end of a linkage driven rod (342) which is arranged in the linkage support frame (344) is hinged with the linkage power rod (341) through the sliding pin IV (3412), the other end of the linkage driven rod (342) is connected with the linkage support frame (344) through a sliding pin V (3431) and an arc-shaped sliding groove IV (3442) which is arranged on the linkage support frame (344) and is in sliding fit with the sliding pin V (3431), and the rod body of the linkage swing rod (343) is hinged on the linkage support frame (344), and the bottom end of the linkage swing rod (343) is hinged with the linkage driven rod (342) through the sliding pin V (3431).

6. The composite lateral parting and core pulling mechanism according to claim 5, wherein a spring ejector pin (3443) which is positioned in a telescopic way is further arranged on the linkage support frame (344) at a position corresponding to the inner side end and/or the outer side end of the arc-shaped chute IV (3442), the telescopic direction of the spring ejector pin (3443) is opposite to the sliding pin V (3431), and the telescopic end of the spring ejector pin (3443) stretches into the arc-shaped chute IV (3442).

7. The composite side parting and core pulling mechanism as defined in any one of claims 1 to 6, wherein a hook-shaped groove structure (3313) corresponding to the swing direction of the link swing lever (343) and extending outward is provided at the top end of the guide slide groove i (3312), the width dimension of the hook-shaped groove structure (3313) penetrating the guide slide groove i (3312) is the same as the width dimension of the guide slide groove i (3312), the hook-shaped groove structure (3313) is inclined downward, and the extending length dimension of the hook-shaped groove structure (3313) is not smaller than the outer diameter dimension of the slide pin iii (3411); the extending position of the movable mould component (2) corresponding to the hook-shaped groove structure (3313) is provided with a sliding pin III guide groove (231), the sliding pin III guide groove (231) comprises an inclined guide transition section positioned at the upper end and a vertical guide section vertically arranged below the inclined guide transition section, the inclined guide transition section is obliquely arranged inwards and upwards corresponding to the hook-shaped groove structure (3313), the abutting joint corner position of the inclined guide transition section and the vertical guide section is also provided with a spring jacking block (232) capable of being positioned in a telescopic mode, and the spring jacking block (232) is in a normally closed state for blocking the sliding pin III guide groove (231).

8. The composite side parting and core pulling mechanism according to any one of claims 1 to 6, wherein the small inner core pulling (32) further comprises a small inner core pulling block (322) which is symmetrically arranged in two parts relative to the axial middle parting surface of the large inner core pulling (31), the small inner core pulling block (322) is arranged at a position of the core (25) corresponding to the small inner core pulling (32) through a translation guiding control structure II which is symmetrically arranged in the left-right direction, the position of the core (25) corresponding to the small inner core pulling (32) is also provided with a small inner core pulling accommodating space which is matched with the external dimension of the small inner core pulling block (322) and can allow the small inner core pulling block (322) to retract into the core (25), the translation guiding control structure II comprises a sliding pin VII (251) which is connected with a small inner side drawing block (322) in a mounting way and a guiding chute III (252) which is matched with the sliding pin VII (251), the guiding chute III (252) of the L-shaped structure comprises a horizontal section which corresponds to the position of the small inner side core-pulling accommodating space and a vertical section which is communicated with the outer side end of the horizontal section and extends upwards, the bottom end of the small inner side drawing block (322) is of an inclined surface structure, the top end of the inclined surface structure is provided with a dovetail groove or a dovetail bulge structure which is arranged along the inclined surface structure, the top end of the small inner side drawing rod (321) is matched with the inclined surface structure at the bottom end of the small inner side drawing block (322) in a way of stretching out from the axial middle facet direction of the large inner side core-pulling block (31), and a dovetail bulge or a dovetail groove structure matched with the dovetail groove or the dovetail bulge structure of the small inner side drawing block (322) is obliquely arranged.

9. An injection mold, for the side extraction of two directions which need to be vertically crossed, and the side extraction of two directions needs a complex structure plastic part with a large side extraction distance and a small side extraction distance, and the side extraction of two directions simultaneously has the motion interference in the side extraction direction, comprising a fixed mold component (1) and a movable mold component (2), wherein the movable mold component (2) comprises a mold core (25) and a top mold mechanism (26), the top mold mechanism (26) comprises a push plate (261), and the injection mold is characterized by further comprising the composite side parting and core pulling mechanism (3) as claimed in claim 1.

10. Injection mold according to claim 9, characterized in that the drive connection plate (332) is arranged parallel to the push plate (261), and that the push plate (261) is provided with a through slot for the passage of the drive connection plate (332) in a position corresponding to the drive connection plate (332).