CN216885027U - Back-off forming mechanism and injection mold - Google Patents

Abstract

The application provides a back-off forming mechanism and injection mold. Back-off forming mechanism includes: the sliding block is provided with an initial position and a combined position in a first direction, and is provided with a first limiting groove and a first back-off groove along the first direction; the inclined guide post penetrates through an inclined guide post groove which is formed in the sliding block in an inclined mode; the sliding seat has a preset gap in the first direction with the sliding block located at the initial position; the oblique top, one end of the oblique top can be connected to the sliding seat in a rotating mode around the preset axis, the other end of the oblique top penetrates through the sliding block and is provided with a second back-off groove along the second direction, the preset axis and the first direction are perpendicular to each other, and the preset gap is larger than the length of the second back-off groove along the second direction; the first limiting piece is arranged on the sliding seat, and when the sliding block moves from the initial position to the combined position, the first limiting piece can be clamped into the first limiting groove so that the sliding block is combined with the sliding seat; when the sliding block moves from the joint position to the initial position, the first limiting piece can be separated from the first limiting groove so that the sliding block and the sliding seat are separated from each other.

Description

Back-off forming mechanism and injection mold

Technical Field

The application belongs to the technical field of injection molding equipment, especially, relate to a back-off forming mechanism and injection mold.

Background

In the design of the injection mold, when the produced product has an inverted buckle, a sliding block mechanism is required to be designed to withdraw the inverted buckle of the formed product, and the inverted buckle in the same direction on the product can be withdrawn through the sliding block mechanism.

When the same side of a product is provided with the reverse buckles in two directions, the conventional sliding block mechanism cannot meet the functional requirements, and the reverse buckles in two different directions are withdrawn usually in a mode that the sliding block is arranged on the oil cylinder. However, the die adopting the form that the oil cylinder is provided with the sliding block is relatively large in size and complex in structure, the manufacturing cost of the die is increased, the operation is complex, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a back-off forming mechanism and an injection mold to solve the problems that the structure adopted when the existing injection mold mechanism realizes the back-off forming in two different directions is complex and the operation is complex.

In a first aspect, an embodiment of the present application provides a back-off forming mechanism, the back-off forming mechanism includes: the sliding block is provided with a first limiting groove and a first reversing groove extending along a first direction, and the sliding block is provided with an initial position and a combined position in the first direction; the slide block is provided with an inclined guide post groove inclined towards the first reverse buckling groove, and the inclined guide post penetrates through the inclined guide post groove; the sliding seat and the sliding block positioned at the initial position have a preset gap in the first direction; the oblique top is connected to the sliding seat in a manner that one end of the oblique top can rotate around a preset axis, the other end of the oblique top penetrates through the sliding block and is provided with a second inverted buckle groove extending along a second direction, the preset axis and the first direction are perpendicular to each other, and the preset gap is larger than the length of the second inverted buckle groove in the second direction; a first stop disposed on the carriage, the first stop configured to: when the sliding block moves from the initial position to the combined position, the first limiting piece can be clamped into the first limiting groove so that the sliding block is combined with the sliding seat; when the sliding block moves from the joint position to the initial position, the first limiting piece can be separated from the first limiting groove so that the sliding block and the sliding seat are separated from each other.

Optionally, a containing cavity is formed in the sliding block, the sliding seat is located in the containing cavity, the other end of the inclined top penetrates through a first side wall of the containing cavity, and a preset gap is formed between the first side wall and the sliding seat.

Optionally, the back-off forming mechanism further comprises a pressing plate, the pressing plate is fixed on the sliding block, a step surface extending along the first direction is arranged on the pressing plate, and the sliding seat is abutted to the step surface.

Optionally, a mounting hole is formed in the sliding seat, the first limiting member is movably inserted into the mounting hole along the second direction, and a clamping groove extending along the second direction is formed in a wall surface of the mounting hole; the end faces of two ends of the first limiting part in the second direction are arc faces, a connecting rod is connected to the first limiting part, and one end of the connecting rod is inserted into the clamping groove.

Optionally, the back-off forming mechanism further comprises an inclined top seat, the inclined top seat can wind the preset axis is rotationally arranged on the sliding seat, and one end of the inclined top is in threaded connection with the inclined top seat.

Optionally, the back-off forming mechanism further includes a rotating shaft seat and a base plate, the sliding seat is provided with a step hole penetrating through the sliding seat along the first direction, and the rotating shaft seat abuts against a step surface of the step hole; the oblique footstock with the pivot seat rotates to be connected, the oblique top wear to locate the step hole, backing plate detachably install on the slide and with the slide presss from both sides tightly jointly the pivot seat.

In a second aspect, an embodiment of the present application further provides an injection mold, where the injection mold includes a movable mold, a stationary mold, and the back-off forming mechanism as described in any one of the above, a slide block and a slide seat in the back-off forming mechanism are slidably mounted on the movable mold along a first direction, and an inclined guide post in the back-off forming mechanism is fixed on the stationary mold.

Optionally, a second limiting groove is formed in the movable mold, and a first limiting member in the back-off molding mechanism is configured to: when the sliding block moves from the joint position to the initial position, the first limiting piece can be separated from the first limiting groove of the sliding block and clamped into the second limiting groove, so that the sliding block and the sliding seat are separated from each other.

Optionally, a limit clamp is arranged on the movable mold, a limit pin capable of being clamped into the limit clamp is arranged on the sliding block, and the limit pin is located in front of a first limit groove on the sliding block along the direction from the initial position to the combined position; or, be equipped with the spacing clamp on the slider, be equipped with on the movable mould and block in the spacing pin of spacing clamp, follow initial position extremely the direction of joint position, the spacing clamp is located before the first spacing groove on the slider.

Optionally, a limiting step is arranged on the sliding seat, a fourth limiting part is arranged on the moving die, and the fourth limiting part is configured as: when the slide block moves from the joint position to the initial position, the fourth limiting part can be abutted with the limiting step; the back-off forming mechanism further comprises a base plate connected to the slider, the base plate configured to: when the slider moves from the joint position to the initial position, the bottom plate can abut against the slider.

The application has at least the following beneficial effects:

when the back-off forming mechanism and the injection mold provided by the embodiment of the application are used for injection molding, the inclined guide post guides the sliding block to move from the initial position to the combined position in the first direction during mold opening, and in the process that the sliding block moves from the initial position to the combined position, the inclined top rotates around the preset axis to enable one end, provided with the second back-off groove, of the inclined top to generate displacement in the second direction, and the second back-off groove is separated from a second back-off on a product, so that back-off demolding in the second direction is realized; when the sliding block moves to the joint position from the initial position, the first limiting part on the sliding seat is clamped into the first limiting groove on the sliding block so that the sliding block is combined with the sliding seat, the sliding seat is driven by the sliding block to continue moving until the first back-off groove on the sliding block is separated from the first back-off on the product, and the back-off demoulding in the first direction is realized. The back-off forming mechanism and the injection mold that this application embodiment provided overall structure are simple, have reduced mould cost of manufacture, and easy operation, have improved production efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic structural diagram of an inverted buckle forming mechanism provided in an embodiment of the present application.

Fig. 2 is a schematic structural view of the back-off forming mechanism shown in fig. 1 from another perspective.

Fig. 3 is a first cross-sectional view of an inverted buckle forming mechanism according to an embodiment of the present disclosure, wherein a slider is in an initial position.

Fig. 4 is a second cross-sectional view of the forming mechanism of the present application, wherein the slider is in the engaged position and the second undercut groove on the slanted top disengages the second undercut on the product.

Fig. 5 is a third cross-sectional view of the inverted buckle forming mechanism according to the embodiment of the present application, wherein the first inverted buckle groove on the sliding block is out of the first inverted buckle on the product.

Fig. 6 is a schematic structural diagram of a slider provided in an embodiment of the present application.

FIG. 7 is a schematic view of the slider of FIG. 6 from another perspective.

Fig. 8 is a partial schematic structural diagram of an inverted buckle forming mechanism according to an embodiment of the present application.

Fig. 9 is an exploded view of the back-off forming mechanism of fig. 8.

Fig. 10 is a schematic structural diagram of a sliding seat, a lifter and a lifter seat according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a sliding seat, an oblique top seat, and a rotating shaft seat according to an embodiment of the present application.

Fig. 12 is a schematic structural diagram of the lifter, the lifter base and the rotating shaft base according to the embodiment of the present application.

Fig. 13 is a schematic structural diagram of a first limiting member according to an embodiment of the present application.

Fig. 14 is a schematic structural diagram of a second limiting member according to an embodiment of the present application.

Fig. 15 is a schematic structural diagram of a third limiting member according to an embodiment of the present application.

The reference numbers illustrate:

10. a slider; 11. a first undercut; 12. an inclined guide post groove; 13. an accommodating cavity; 14. a through hole; 15. a first side wall; 20. an inclined guide post; 30. a slide base; 31. a stepped bore; 32. mounting holes; 33. a card slot; 34. a limiting step; 40. obliquely ejecting; 41. a second undercut; 50. a first limit piece; 60. pressing a plate; 61. a step surface; 70. a connecting rod; 80. a slanted ejecting seat; 90. a rotating shaft seat; 91. a support plate; 92. a connecting plate; 100. a base plate; 110. a second limiting member; 111. a first limit groove; 120. a base plate; 131. a limiting clamp; 132. a limit pin; 140. a third limiting member; 141. a second limit groove; 150. a fourth limiting member; 200. producing a product; 201. a first reverse buckle; 202. and (6) a second reverse buckle.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a back-off forming mechanism, and the back-off forming mechanism can be applied to an injection mold.

As shown in fig. 1 to 5, the back-off forming mechanism includes a slider 10, a slant guide pillar 20, a sliding base 30, a slant top 40, and a first limiting member 50. The slider 10 is provided with a first limiting groove 111 and a first reversing groove 11 extending along a first direction X, and the slider 10 has an initial position and a joint position in the first direction X; an inclined guide post groove 12 inclined towards the first back-off groove 11 is formed in the sliding block 10, and an inclined guide post 20 penetrates through the inclined guide post groove 12; the slide 30 and the slider 10 in the initial position have a preset clearance H in the first direction X, which may be equal to the distance between the initial position and the associated position; one end of the inclined top 40 can be rotatably connected to the sliding base 30 around a preset axis, the other end of the inclined top 40 penetrates through the sliding block 10 and is provided with a second inverted buckle groove 41 extending along a second direction Y, the preset axis and the first direction X are perpendicular to each other, and the preset gap H is larger than the length of the second inverted buckle groove 41 in the second direction Y; the first limiting member 50 is disposed on the slider 30, and the first limiting member 50 is configured to: when the slider 10 moves from the initial position to the coupling position, the first limiting member 50 can be clamped into the first limiting groove 111 to couple the slider 10 with the slider 30; when the slider 10 moves from the coupled position to the initial position, the first position-limiting member 50 can be disengaged from the first position-limiting groove 111 to disengage the slider 10 from the slider 30.

When the back-off forming mechanism with the structure is applied to injection molding, during mold opening, the inclined guide post 20 guides the slider 10 to move from the initial position to the joint position in the first direction X, and in the process that the slider 10 moves from the initial position to the joint position, the inclined top 40 rotates around a preset axis to enable one end, provided with the second back-off groove 41, of the inclined top 40 to generate displacement in the second direction Y, and the second back-off groove is separated from the second back-off 202 on the product 200, so that back-off demolding in the second direction Y is realized; when the slider 10 moves from the initial position to the joint position, the first position-limiting member 50 on the slider 30 is clamped into the first position-limiting groove 111 on the slider 10 to enable the slider 10 to be joined with the slider 30, and the slider 10 drives the slider 30 to continue to move until the first inverse-buckling groove 11 on the slider 10 is separated from the first inverse-buckling 201 on the product 200, so as to realize inverse-buckling demoulding in the first direction X. The integral structure of back-off forming mechanism that this application embodiment provided is simple, has reduced mould cost of manufacture, and back-off forming mechanism's easy operation, and the smooth drawing of patterns of both sides back-off can be realized through slider 10's one shot motion, has solved the fashioned problem of the same side both sides back-off of product 200, has improved production efficiency, has fine use value, can satisfy the requirement of product diversity.

The preset gap H is greater than the length of the second undercut 41 in the second direction Y, so as to ensure that the second undercut 41 can be completely disengaged from the second undercut on the product 200 within the stroke range of the preset gap H. Optionally, the preset gap H may be specifically set according to the length of the second undercut 41 in the second direction Y, as long as it is ensured that the preset gap H is greater than the length of the second undercut 41 in the second direction Y, and preferably, the difference between the preset gap H and the length of the second undercut 41 in the second direction Y is 3mm to 5 mm.

Specifically, as shown in fig. 6, a through hole 14 is formed in the slider 10, and the lifter 40 is inserted into the through hole 14. Optionally, the number of the slanted ejecting portions 40 may be one or more, and may be specifically set according to the number of the second undercuts 202 on the product 200, and the number of the through holes 14 corresponds to the number of the slanted ejecting portions 40. Illustratively, as shown in fig. 6 and 8, the number of the slanted ejecting portions 40 is three, three through holes 14 are formed in the slider 10, and the three slanted ejecting portions 40 are correspondingly inserted into the three through holes 14 one by one.

Optionally, the number of the inclined guide pillars 20 may be one or more, which is not limited in the embodiment of the present application, and the number of the inclined guide pillar slots 12 corresponds to that of the inclined guide pillars 20. Illustratively, as shown in fig. 2 and 7, the number of the inclined guide pillars 20 is two, two inclined guide pillar slots 12 are provided on the slider 10, and the two inclined guide pillars 20 are inserted into the two inclined guide pillar slots 12 in a one-to-one correspondence manner.

In some embodiments of the present application, as shown in fig. 3 to 5, 8 to 9, and 14, the back-off forming mechanism further includes a second limiting member 110, the second limiting member 110 is detachably connected to the sliding block 10, and the first limiting groove 111 is disposed on the second limiting member 110. The first limiting groove 111 is formed in the second limiting member 110, and then the second limiting member 110 is connected to the slider 10, so that the first limiting groove 111 can be conveniently replaced when worn. When the slider 10 moves from the initial position to the coupling position in the first direction X, the first position-limiting element 50 is clamped into the first position-limiting groove 111 of the second position-limiting element 110, so that the slider 10 and the sliding base 30 are coupled, and the slider 10 can drive the sliding base 30 to move continuously.

As shown in fig. 7, in some embodiments of the present application, a receiving cavity 13 is formed on the slider 10, the receiving cavity 13 has a first sidewall 15, a second sidewall, a third sidewall and a fourth sidewall connected in sequence, the fourth sidewall is opposite to the second sidewall, the first sidewall 15 is opposite to the third sidewall, and the first sidewall 15 is located in front of the third sidewall along a direction from the initial position to the joint position; the sliding seat 30 is located in the accommodating cavity 13, one end of the slanted ejecting part 40, which is provided with the second inverted buckle groove 41, penetrates through the first side wall 15 of the accommodating cavity 13, and a preset gap H is formed between the first side wall 15 and the sliding seat 30. The slide seat 30 is arranged in the accommodating cavity 13 of the slide block 10, and the other end of the inclined top 40 penetrates through the first side wall 15 of the accommodating cavity 13, so that the overall structure of the back-off forming mechanism is more compact, and the occupied space is saved.

Referring to fig. 3-5 and 8-9, in some embodiments of the present application, the back-off forming mechanism further includes a pressing plate 60, the pressing plate 60 is fixed on the slider 10, a step surface 61 extending along the first direction X is provided on the pressing plate 60, and the sliding seat 30 abuts against the step surface 61. By providing the step surface 61 extending along the first direction X on the pressing plate 60, the step surface 61 forms a guiding structure, when the slider 10 moves between the initial position and the combined position, the slider 10 will displace relative to the sliding base 30 along the extending direction (i.e. the first direction X) of the step surface 61, and the step surface 61 improves the moving smoothness of the slider 10. As shown in fig. 2 and 7, when the receiving cavity 13 is formed on the slider 10 and the sliding seat 30 is located in the receiving cavity 13, the pressing plate 60 may be connected to the second sidewall or the fourth sidewall of the receiving cavity 13. Alternatively, the number of the pressing plates 60 may be one or two, and when the number of the pressing plates 60 is two, the two pressing plates 60 may be respectively connected to the second side wall and the fourth side wall and arranged oppositely, and two opposite ends of the sliding base 30 respectively abut against the step surfaces 61 on the two pressing plates 60.

As shown in fig. 3-5 and 9-11, the sliding base 30 is provided with a mounting hole 32, the first limiting member 50 is movably disposed in the mounting hole 32 along the second direction Y, and a wall of the mounting hole 32 is provided with a slot 33 extending along the second direction Y; as shown in fig. 13, end surfaces of both ends of the first limiting member 50 in the second direction Y are configured as arc surfaces, a connecting rod 70 is connected to the first limiting member 50, and one end of the connecting rod 70 is inserted into the slot 33. The connecting rod 70 may be a pin or other rod-shaped object. The first limiting member 50 is movably inserted into the mounting hole 32 of the sliding base 30 along the second direction Y, and end faces of two ends of the first limiting member 50 along the second direction Y are configured to be arc surfaces, so that when the sliding block 10 moves from the joint position to the initial position, the first limiting member 50 can be separated from the first limiting groove 111 under the thrust action of the sliding block 10 and is clamped into the second limiting groove 141 of the third limiting member 140; when the slider 10 moves from the initial position to the joint position, the first limiting member 50 can be disengaged from the second limiting groove 141 of the third limiting member 140 under the thrust action of the slider 10 and is clamped in the first limiting groove 111, so that the structure is simple.

In some embodiments of the present application, as shown in fig. 3-5 and 10-12, the back-off forming mechanism further includes a slanted ejecting seat 80, the slanted ejecting seat 80 is rotatably disposed on the sliding seat 30 about a predetermined axis, and one end of the slanted ejecting 40 is threadedly connected to the slanted ejecting seat 80. Can set up on slide 30 around predetermineeing the axis with rotating through setting up oblique footstock 80, with the oblique footstock 80 of one end threaded connection of oblique top 40, realize being connected dismantling of oblique top 40 and slide 30 to can change the oblique top 40 of damage or change the oblique top 40 of different models, application scope is wider. Alternatively, the threaded connection of one end of the pitched roof 40 with the pitched roof base 80 can be achieved by: one end of the inclined top 40 is provided with a threaded hole, a connecting through hole is arranged on the inclined top seat 80, and the inclined top seat is in threaded fit with the threaded hole after being penetrated through the connecting through hole by a screw; or, an external thread is arranged at one end of the pitched roof 40, a threaded hole is arranged on the pitched roof seat 80, and the end, provided with the external thread, of the pitched roof 40 is inserted into the threaded hole for threaded matching.

In some embodiments of the present application, as shown in fig. 3-5 and 8-12, the back-off molding mechanism further includes a rotating shaft seat 90 and a backing plate 100, the sliding seat 30 is provided with a step hole 31 penetrating through the sliding seat 30 along the first direction X, and the rotating shaft seat 90 abuts against a step surface 61 of the step hole 31; oblique footstock 80 rotates with pivot seat 90 to be connected, and oblique top 40 wears to locate step hole 31, and backing plate 100 detachably installs on slide 30 and presss from both sides tight pivot seat 90 jointly with slide 30, realizes being connected with dismantling of slide 30 to footstock 80 to can change the oblique footstock 80 of damage or change the oblique footstock 80 of different models, application scope is wider.

Specifically, as shown in fig. 12, the rotating shaft seat 90 includes two supporting plates 91 and a connecting plate 92, the two supporting plates 91 are disposed oppositely, rotating shaft holes are formed in the two supporting plates 91, rotating shafts are disposed at two opposite ends of the inclined footstock 80, the rotating shafts at two opposite ends of the inclined footstock 80 are respectively inserted into the rotating shaft holes formed in the two supporting plates 91, and the connecting plate 92 is respectively connected with the two supporting plates 91 through threads. When the oblique top seat 80 and the rotating shaft seat 90 are assembled, the rotating shaft at one end of the oblique top seat 80 is inserted into the rotating shaft hole of one of the supporting plates 91, then the rotating shaft at the other end of the oblique top seat 80 is inserted into the rotating shaft hole of the other supporting plate 91, and finally the connecting plate 92 is respectively connected with the two supporting plates 91 through screws.

The working principle of the inverted buckle forming mechanism provided by the embodiment of the present application will be described below with reference to fig. 3 to 5, wherein the same side of the product 200 has a first inverted buckle 201 extending along the first direction X and a second inverted buckle 202 extending along the second direction Y:

as shown in fig. 3, the slant guide post 20 is inclined to the left, and when the mold is opened, the slant guide post 20 guides the slide block 10 to move to the right from the initial position, and before the slide block 10 moves to the joint position, the slant top 40 is not displaced in the first direction X due to the preset gap H, but the slant top 40 rotates around the preset axis so that the slant top 40 is relatively displaced in the second direction Y, so that the second undercut groove 41 of the slant top 40 is upwardly disengaged from the second undercut 202 of the product 200; as shown in fig. 4, when the slider 10 moves to the right to the coupling position, the lifter 40 is completely disengaged from the second latch 202, and the first limiting member 50 is upwardly engaged in the first limiting groove 111 of the second limiting member 110 to couple the slider 10 with the slider 30; the slide 10 then drives the slide 30 to continue moving rightward under the guidance of the inclined guide post 20 until the first undercut 11 is completely disengaged from the first undercut 201 of the product 200, and the mold opening movement is completed, as shown in fig. 5, the undercuts in both directions of the first undercut 201 and the second undercut 202 are completely disengaged.

The embodiment of the application further provides an injection mold, which comprises a movable mold, a stationary mold and the back-off forming mechanism as described in any one of the above embodiments, wherein the slider 10 and the slide carriage 30 in the back-off forming mechanism are slidably mounted on the movable mold along the first direction X, and the inclined guide post 20 in the back-off forming mechanism is fixed on the stationary mold. The injection mold further comprises a shovel base, wherein the shovel base is arranged on the static mold and used for pressing the sliding block 10 after the movable mold and the static mold are closed, and the sliding block 10 is prevented from moving in the injection molding process.

Wherein, the movable mold is provided with a second limit groove 141, and the first limit part 50 in the back-off molding mechanism is configured as: when the slider 10 moves from the coupled position to the initial position, the first position-limiting member 50 can be disengaged from the first position-limiting groove 111 of the slider 10 and be engaged in the second position-limiting groove 141, so that the slider 10 and the slider 30 are decoupled. Specifically, when the mold is opened, the movable mold is separated from the stationary mold, the inclined guide post 20 guides the slider 10 to move from the initial position to the joint position in the first direction X, as shown in fig. 4, when the slider 10 moves to the joint position, the first limiting member 50 is disengaged from the second limiting groove 141 and is clamped into the first limiting groove 111, the slider 10 is combined with the slide carriage 30, and the slider 10 drives the slide carriage 30 to move continuously; when the die is closed, the movable die moves towards the stationary die, the inclined guide post 20 guides the slider 10 to move towards the initial position in the first direction X, and as shown in fig. 3 and 4, when the slider 10 moves to the initial position, the first limiting piece 50 is disengaged from the first limiting groove 111 of the slider 10 and is clamped into the second limiting groove 141, the slider 30 is limited, the slider 10 and the slider 30 are disengaged, and a preset gap H is formed between the slider 10 and the slider 30.

Specifically, as shown in fig. 2 to 5, 8 to 9, and 15, the back-off forming mechanism further includes a third limiting member 140, the third limiting member 140 is detachably connected to the movable mold, and the second limiting groove 141 is disposed on the third limiting member 140. The second limiting groove 141 is formed in the third limiting member 140, and then the third limiting member 140 is connected to the slider 10, so that the second limiting groove 141 can be conveniently replaced after being worn. When the slider 10 moves from the coupling position to the initial position in the first direction X, the first limiting member 50 is disengaged from the first limiting groove 111 and is engaged with the second limiting groove 141 of the third limiting member 140, the slider 30 is limited, and the slider 10 and the slider 30 are decoupled.

As shown in fig. 1 to 5, in some embodiments of the present application, the movable mold is provided with a limit clip 131, the slider 10 is provided with a limit pin 132 capable of being snapped into the limit clip 131, and the limit pin 132 is located in front of the first limit groove 111 on the slider 10 in a direction from the initial position to the combined position of the slider 10; or, the slider 10 is provided with a limit clip 131, the movable mold is provided with a limit pin 132 capable of being clamped into the limit clip 131, and the limit clip 131 is located in front of the first limit groove 111 along the direction from the initial position to the combined position of the slider 10. Through setting up spacing clamp 131 and spacing pin 132, conveniently control slider 10 can in time stop removing after the equal drawing of patterns of two kinds of back-offs of first back-off 201 and second back-off 202. It should be noted that, when the slide block 10 is located at the initial position, the distance between the limit pin 132 and the limit clip 131 should be greater than the length of the first undercut 11 along the first direction X, so as to ensure that the first undercut 11 has completely disengaged from the first undercut 201 on the product 200 when the limit pin 132 is clamped into the limit clip 131.

Optionally, the number of the limiting clamps 131 may be one or more, which is not limited in the embodiment of the present application, and the number of the limiting pins 132 corresponds to the number of the limiting clamps 131. Illustratively, as shown in fig. 2, the number of the limiting clamps 131 and the limiting pins 132 is two, and the two limiting clamps 131 and the two limiting pins 132 are arranged in a one-to-one correspondence.

In some embodiments of the present application, as shown in fig. 10, the sliding seat 30 is provided with a limit step 34; as shown in fig. 2 to 5, the movable mold is provided with a fourth limiting member 150, and the fourth limiting member 150 is configured to: when the slider 10 moves from the joint position to the initial position, the fourth limiting member 150 can abut against the limiting step 34; the back-off forming mechanism further comprises a base plate 120, the base plate 120 being attached to the slider 10, the base plate 120 being configured to: when the slider 10 moves from the coupled position to the initial position, the base plate 120 can abut the slider 30. By arranging the limiting step 34, the fourth limiting member 150 and the bottom plate 120, the slider 10 can be controlled to stop moving at the initial position in time when the mold is closed. It can be understood that when the slide 10 moves from the joint position to the initial position, the fourth position-limiting element 150 abuts against the position-limiting step 34, and the bottom plate 120 abuts against the slide 30, so that the slide 10 can be controlled not to move forward any more.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

The back-off forming mechanism and the injection mold provided in the embodiments of the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. An inverted buckle forming mechanism, comprising:

the sliding block (10) is provided with a first limiting groove (111) and a first reversing groove (11) extending along a first direction, and the sliding block (10) has an initial position and a combined position in the first direction;

the slider (10) is provided with an inclined guide post groove (12) inclined to the first back-off groove (11), and the inclined guide post (20) is arranged in the inclined guide post groove (12) in a penetrating manner;

a sliding seat (30), wherein the sliding seat (30) and the sliding block (10) located at the initial position have a preset gap H in the first direction;

one end of the oblique top (40) is rotatably connected to the sliding seat (30) around a preset axis, the other end of the oblique top (40) penetrates through the sliding block (10) and is provided with a second inverted buckle groove (41) extending along a second direction, the preset axis and the first direction are perpendicular to each other, and the preset gap H is larger than the length of the second inverted buckle groove (41) in the second direction;

a first stop (50), the first stop (50) being disposed on the carriage (30), the first stop (50) being configured to: when the sliding block (10) moves from the initial position to the combined position, the first limiting piece (50) can be clamped into the first limiting groove (111) to enable the sliding block (10) to be combined with the sliding seat (30); when the sliding block (10) moves from the joint position to the initial position, the first limiting piece (50) can be separated from the first limiting groove (111) so that the sliding block (10) and the sliding seat (30) are separated from each other.

2. The inverted buckle forming mechanism according to claim 1, wherein a receiving cavity (13) is formed in the slider (10), the sliding base (30) is located in the receiving cavity (13), the other end of the slanted ejecting head (40) penetrates through a first side wall (15) of the receiving cavity (13), and the first side wall (15) and the sliding base (30) have the predetermined gap H therebetween.

3. The back-off forming mechanism according to claim 2, further comprising a pressing plate (60), wherein the pressing plate (60) is fixed on the sliding block (10), a step surface (61) extending along the first direction is arranged on the pressing plate (60), and the sliding base (30) abuts against the step surface (61).

4. The inverted buckle forming mechanism according to claim 1, wherein the sliding base (30) is provided with a mounting hole (32), the first limiting member (50) is movably disposed through the mounting hole (32) along the second direction, and a wall surface of the mounting hole (32) is provided with a slot (33) extending along the second direction; the end faces of two ends of the first limiting part (50) in the second direction are arc faces, a connecting rod (70) is connected to the first limiting part (50), and one end of the connecting rod (70) is inserted into the clamping groove (33).

5. The mechanism of claim 1, further comprising a slanted ejecting seat (80), wherein the slanted ejecting seat (80) is rotatably disposed on the sliding seat (30) around the predetermined axis, and one end of the slanted ejecting (40) is threadedly connected to the slanted ejecting seat (80).

6. The back-off forming mechanism according to claim 5, further comprising a rotating shaft seat (90) and a backing plate (100), wherein a step hole (31) penetrating through the sliding seat (30) along the first direction is formed in the sliding seat (30), and the rotating shaft seat (90) abuts against a step surface (61) of the step hole (31);

oblique footstock (80) with pivot seat (90) rotate to be connected, oblique top (40) wear to locate step hole (31), backing plate (100) detachably install on slide (30) and with slide (30) press from both sides tightly jointly pivot seat (90).

7. An injection mold, characterized in that, the injection mold comprises a movable mold, a stationary mold and the back-off forming mechanism according to any one of claims 1 to 6, wherein a slide block (10) and a slide base (30) of the back-off forming mechanism are slidably mounted on the movable mold along a first direction, and a diagonal guide post (20) of the back-off forming mechanism is fixed on the stationary mold.

8. The injection mold according to claim 7, wherein the movable mold is provided with a second limit groove (141), and the first limit member (50) in the back-off molding mechanism is configured to: when the sliding block (10) moves from the joint position to the initial position, the first limiting piece (50) can be disengaged from the first limiting groove (111) of the sliding block (10) and clamped into the second limiting groove (141), so that the sliding block (10) and the sliding seat (30) are disengaged.

9. An injection mold according to claim 7, characterized in that the movable mold is provided with a limiting clamp (131), the slide block (10) is provided with a limiting pin (132) capable of being clamped into the limiting clamp (131), and the limiting pin (132) is located in front of the first limiting groove (111) on the slide block (10) along the direction from the initial position to the combined position;

or, be equipped with limit clamp (131) on slider (10), be equipped with on the movable mould and block in limit pin (132) of limit clamp (131), follow initial position extremely the direction of joint position, limit clamp (131) are located before first spacing groove (111).

10. An injection mold according to any claim 7-9, wherein the slide (30) is provided with a limiting step (34), the movable mold is provided with a fourth limiting member (150), and the fourth limiting member (150) is configured to: when the slide block (10) moves from the joint position to the initial position, the fourth limiting part (150) can be abutted with the limiting step (34);

the back-off forming mechanism further comprises a base plate (120), the base plate (120) being connected to the slider (10), the base plate (120) being configured to: the base plate (120) is abuttable to the slider (30) when the slider (10) is moved from the joint position to the initial position.

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