CN213137677U - Antiseized demoulding structure and stripper - Google Patents

Abstract

The utility model discloses an anti-sticking demoulding structure and a demoulding machine, which relate to the technical field of cores, wherein the anti-sticking demoulding structure comprises a core and a demoulding piece, the core is used for forming a product workpiece, the demoulding piece is arranged below the core, and the demoulding piece is used for ejecting out the formed product workpiece to separate the product workpiece from the core; the stripper member moves relative to the product workpiece during ejection of the product workpiece from the stripper member. The demolding machine comprises a driving device and the anti-sticking demolding structure, wherein the driving device is used for automatically driving the demolding part to move. When the demoulding piece ejects the product workpiece, the demoulding piece moves obliquely relative to the product workpiece, and the demoulding piece is displaced in the horizontal direction, so that the demoulding piece moves relative to the product workpiece in the horizontal direction, the product workpiece and the top of the demoulding piece can be prevented from being adhered together, and the use is convenient. In the process, the auxiliary demoulding mechanism applies acting force to the inner side surface of the product workpiece, so that the product workpiece is easy to separate from the core.

Description

Antiseized demoulding structure and stripper

Technical Field

The utility model relates to a core technical field especially relates to an antiseized demoulding structure and stripper.

Background

There are many plastic parts used in industry that are made by being formed in a special core. The method comprises the following steps of firstly processing a plastic raw material into a molten state at a high temperature, then pouring the molten liquid into a cavity of a mold core, cooling and molding, and then directly ejecting a semi-finished product from the mold core by using a tool. However, in the separation process, the semi-finished product is easy to stick on the tool, and the tool needs to be taken off from the semi-finished product at a later stage, so that time and labor are wasted, and the use is troublesome. Moreover, the tool has only a top surface for ejecting the semi-finished product, making it difficult to detach the semi-finished product from the core.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide an antiseized demoulding structure for solve the problem among the prior art.

In order to solve the above problem, the utility model provides a: an anti-sticking demoulding structure comprises a core, a demoulding part and a secondary demoulding mechanism, wherein the core is used for moulding a product workpiece, the demoulding part is arranged below the core, and the demoulding part is used for ejecting the moulded product workpiece out to enable the product workpiece to be separated from the core; said stripper member moving relative to said product workpiece during ejection of said product workpiece by said stripper member;

the auxiliary demoulding mechanism is arranged in the demoulding part, and when the demoulding part ejects the product workpiece, the auxiliary demoulding mechanism applies acting force to the inner side part of the product workpiece to assist the product workpiece to be separated from the core.

In a possible implementation manner, the demolding part comprises a plug and a limiting plate, the limiting plate is connected with the plug, the limiting plate is arranged obliquely relative to the plug, a chute is arranged in the mold core, and the limiting plate moves upwards along the chute to drive the plug to eject the product workpiece.

In a possible embodiment, the plug is parallel to the horizontal plane, and the included angle between the limiting plate and the horizontal plane is 60-75 degrees; and in the process that the ejector ejects the product workpiece, the ejector moves relative to the product workpiece along the horizontal direction.

In one possible embodiment, one or more secondary ejection mechanisms are provided in the ejector, and exert a force on the inner side of the product workpiece when the ejector ejects the product workpiece upward.

In a possible implementation mode, the auxiliary demolding mechanism comprises a plurality of groups of elastic needles and return springs, an accommodating cavity is formed in the ejector head, the elastic needles and the return springs are both arranged in the accommodating cavity, the end parts, close to the core, of the elastic needles are driven ends, and the end parts, far away from the core, of the elastic needles are ejection ends; the side wall of the mold core close to the top is provided with a guide wall vertical to the horizontal plane; when the ejector head moves upwards, the driven end moves upwards along the guide wall, and the ejection end gradually extends out of the side face of the ejector head.

In one possible embodiment, the plug is part of the core, and the plug and the core form a complete core when the plug is not ejected.

In a possible embodiment, the auxiliary stripper includes a plurality of groups of the pogo pins and the return springs, the groups of the pogo pins and the return springs are arranged side by side along a length direction of the ram, one end of the return spring is fixedly connected to an inner wall of the accommodating cavity, and the other end of the return spring is connected to the pogo pins.

In a possible embodiment, a support is inserted into the plug and is used for supporting the ejection end of the bullet pin.

In a possible embodiment, the end of the stripper element remote from the core is provided with a push-pull handle for pushing and pulling the stripper element along the chute.

In a second aspect, the application further provides a demolding machine, which comprises a driving device and the anti-adhesion demolding structure, wherein the driving device is used for automatically driving the demolding part to move.

The utility model has the advantages that: the utility model provides an antiseized demoulding structure, including core and drawing of patterns piece. The demoulding part is arranged below the core, and after the product workpiece is formed on the core, the demoulding part is used for ejecting the formed product workpiece out to enable the product workpiece to be separated from the core. When the demoulding piece ejects the product workpiece, the demoulding piece moves obliquely relative to the product workpiece, and the demoulding piece is displaced in the horizontal direction, so that the demoulding piece moves relative to the product workpiece in the horizontal direction, the product workpiece and the top of the demoulding piece can be prevented from being adhered together, and the use is convenient. In the process, the auxiliary demoulding mechanism applies acting force to the inner side surface of the product workpiece, so that the product workpiece is easy to separate from the core.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 shows a schematic structural view of an anti-adhesive release structure;

FIG. 2 shows a schematic view of an anti-adhesive release structure without ejecting a product piece;

FIG. 3 shows an enlarged schematic view of portion A of FIG. 2;

FIG. 4 shows a schematic view of an anti-adhesive release structure in ejecting a product workpiece;

fig. 5 shows an enlarged schematic view of portion B of fig. 4.

Description of the main element symbols:

1-a core; 2-demoulding part; 21-a plug; 22-a limiting plate; 3-auxiliary demoulding mechanism; 31-a pogo pin; 32-a return spring; 4-a support; 5-molding the die core; 6-a guide surface; 7-threaded mounting hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

In the injection molding industry, many plastic product workpieces are formed by cooling a plastic melt on a core 1. The product piece needs to be released from the core 1 just before it is completely cooled. The prior art method uses a tool to eject the product piece vertically upward from the bottom to disengage the product piece from the core 1. Because the product work piece is not completely dry, in ejecting process, there is not any relative displacement at the top of instrument and product work piece, so glue together easily, the later stage still needs to increase a process more, separates instrument and product work piece specially, wastes time and energy, and it is troublesome to use.

As shown in fig. 1, the present embodiment provides an anti-sticking mold release structure including a core 1 and a mold release member 2. The mold core 1 is connected to a mold core 5, and the mold core 5 is used for fixing the mold core 1, so that the injection molding process is more stable. The stripper 2 passes from the bottom of the core insert 5 to the core 1 at the top. The product workpiece is formed on the core 1, the demoulding part 2 is positioned in the product workpiece, and the demoulding part 2 moves upwards to eject the formed product workpiece to separate the product workpiece from the core 1. When the demoulding part 2 ejects the product workpiece, the demoulding part 2 moves obliquely relative to the product workpiece, the demoulding part 2 moves in the vertical direction and the horizontal direction, and the demoulding part 2 moves relative to the product workpiece in the horizontal direction, so that the product workpiece and the top of the demoulding part 2 can be prevented from being stuck together, and the use is convenient.

Example two

As shown in fig. 1, this embodiment is a further improvement of the first embodiment, and in some possible embodiments, the ejector 2 includes a plug 21 and a stopper plate 22. The limit plate 22 is connected to the plug 21, and the limit plate 22 is disposed obliquely to the plug 21. The mold core 5 is internally provided with a chute which is matched with the limiting plate 22 for use, and the chute can guide and limit the limiting plate 22. After the limiting plate 22 is inserted into the chute, the tail of the limiting plate 22 can be pushed, the limiting plate 22 is driven to move upwards along the chute, and the ejector 21 is driven to eject the product workpiece. The chute is used for playing the guide effect to limiting plate 22, makes limiting plate 22 remove along the chute direction to make top 21 also remove along the direction of chute, top 21 is for product work piece slant motion, and when top 21 drove product work piece upward movement, on the horizontal direction, also relative product work piece motion, so the top of top 21 can not glue on the product work piece.

Furthermore, lubricating oil can be coated on the top surface of the top head 21 and the surface of the core 1, so that the friction force among the top head 21, the core and the product workpiece can be reduced, the product workpiece is further prevented from being stuck on the top head 21, and the product workpiece can be separated from the core more smoothly.

In some possible embodiments, the plug 21 may be parallel to the horizontal plane, and the angle between the limiting plate 22 and the horizontal plane is not set too large, so as to prevent the plug 21 from moving too small in the horizontal direction relative to the product workpiece during the process of ejecting the product workpiece by the plug 21, and the plug 21 is easily stuck with the product workpiece. The included angle between the limiting plate 22 and the horizontal plane is not set too small, so that the limiting member needs to apply a large acting force to the plug 21 to drive the plug 21 to move upwards.

Through a large number of tests, the included angle between the limiting plate 22 and the horizontal plane is 60-75 degrees, the included angle within the range can keep the ejector 21 and the product workpiece not to be stuck together, and the limiting piece can also conveniently apply acting force to the ejector 21, so that the ejector 21 can eject the product workpiece more conveniently. The angle between the limiting plate 22 and the horizontal plane is 70 degrees in the embodiment.

As shown in fig. 2 and 3, in some possible embodiments, the top 21 may further be provided with a secondary demolding mechanism 3, and the secondary demolding mechanism 3 is used to assist the top 21 in ejecting the product workpiece, so that the product workpiece is better separated from the core 1. Specifically, the secondary demolding mechanism 3 can facilitate the product workpiece to be separated from the core by applying a force to the side surface of the product workpiece. When the ejector 21 ejects the product workpiece upward, the auxiliary demolding mechanism 3 applies force to the inner side portion of the product workpiece to assist the product workpiece to be separated from the core 1. Specifically, the plug 21 of the present embodiment constitutes a part of the core 1. In the initial state, the limiting plate 22 may be inserted from the top of the chute until passing through the mold core 5, so that the plug 21 is inserted into the mold core 1, and the plug 21 and the partial mold core 1 disposed on the mold core 5 form a complete mold core 1.

During the injection molding process, the core 1 cooperates with another mold (not shown) to produce a product workpiece. Specifically, firstly, the plastic melt is poured into the mold, the plastic melt is uniformly distributed in the mold and flows onto the mold core, and the mold core and the mold are matched to enable the product workpiece to be manufactured uniformly. The plastic melt is poured into the mould and covers both the plug 21 and part of the core 1. After the plastic melt is dried and formed, the tail part of the limiting plate 22 is driven to drive the ejector 21 to move along the direction of the chute, and the top and the side part of the ejector 21 simultaneously exert acting force on the product workpiece to eject the product workpiece.

As shown in fig. 4 and 5, in some possible embodiments, the secondary stripper includes several groups of pogo pins 31 and return springs 32, and the pogo pins 31 and the return springs 32 are used together, and may be one group or multiple groups. The size of the product workpiece can be determined, and for larger product workpieces, a plurality of groups of elastic needles 31 and return springs 32 can be arranged to act on the product workpiece from multiple positions.

Further, a containing cavity is arranged in the top 21, and the elastic needle 31 and the return spring 32 are both arranged in the containing cavity. For convenience of description, the end of the latch 31 close to the core 1 is defined as a driven end, and the end of the latch 31 far from the core 1 is defined as an ejection end. The side wall of the mold core 1 close to the ejector 21 is provided with a guide wall perpendicular to the horizontal plane, and when the ejector 21 moves upwards, the driven end moves upwards along the guide wall, and the ejection end gradually protrudes from the side surface of the ejector 21. Specifically, since the guide wall is perpendicular to the horizontal plane, there is no displacement in the horizontal direction during the upward movement of the driven end along the guide wall, i.e., there is no displacement in the horizontal direction of the latch 31. And the ejector 21 has a horizontal displacement toward the core 1 in the horizontal direction, so that the ejecting end of the pogo pin 31 gradually protrudes from the side surface of the ejector 21 to apply a force to the side surface of the product workpiece, so that the product workpiece is more easily separated from the core 1.

In some possible embodiments, the side of the plug 21 facing away from the core 1 is a circular arc or a bevel, and the side gradually decreases in distance from the core 1 in the bottom-to-top direction. And can be specifically set according to the shape of a product workpiece to be formed. The side surface of the product workpiece of the embodiment is an arc surface, and the side surface of the plug 21 away from the core 1 may be provided as an arc surface.

In some possible embodiments, for larger product workpieces, the secondary stripper may include multiple sets of the pogo pins 31 and the return springs 32, and the multiple sets of the pogo pins 31 and the return springs 32 are arranged side by side along the length direction of the top 21. In the process that the ejector 21 ejects the product workpiece, the driven ends of the plurality of groups of elastic pins 31 slide along the guide surface 6 of the core 1, and the ejection ends simultaneously eject the side surface of the product workpiece, so that the product workpiece is separated from the side surface of the ejector 21. One end of the return spring 32 is fixedly connected with the inner wall of the accommodating cavity, and the other end of the return spring 32 is connected with the elastic needle 31. Specifically, the latch 31 is sleeved in the return spring 32.

When the position of the bullet pin 31 in the horizontal direction is unchanged during the ejection of the work piece of the product by the ejector 21, the ejector 21 moves toward the core 1 in the horizontal direction, that is, the ejector 21 moves toward the core 1 relative to the bullet pin 31 in the horizontal direction, and the ejector 21 presses the return spring 32 to compress the return spring 32. After ejecting the product workpiece, the product workpiece is taken down from the ejector head 21, and the limiting plate 22 can be driven to move towards the direction away from the core 1, so that the ejector head 21 returns to the original way, and the complete core 1 is formed with part of the core 1 again to prepare for manufacturing the next product workpiece.

In some possible embodiments, a support 4 is inserted in the head 21, and the support 4 is used for supporting the ejection end of the bullet pin 31. In order to make bullet needle 31 easy dismounting, the chamber that holds that this embodiment set up in top 21 is great, in order to make the stable work of bullet needle 31, can set up a spliced eye at top 21, inserts support piece 4 through the spliced eye, and support piece 4 can be the bolt commonly used, and the size of bolt can be set for according to actual conditions, until the bolt inserts in the spliced eye, the bolt can support bullet needle 31 completely, avoid bullet needle 31 not hard up can. And when the elastic needle 31 needs to be replaced, pulling out the inserted pin.

In some possible embodiments, the end of the stripper element 2 remote from the core 1 is provided with a push-pull handle for pushing and pulling the stripper element 2 along the chute. When the product workpiece is ejected through the demolding part 2, the push-pull handle can be manually held, and the ejector head 21 is driven to move back and forth to eject the product workpiece.

For some large area production workpieces, the designed insert 1 needs to match the area of the production workpiece. In this case, a plurality of stripping elements 2 may be provided, and a plurality of stripping elements 2 may be arranged uniformly around the circumference of the core 1. For example, one demolding part 2 is respectively arranged in the front, back, left and right directions of the mold core 1, four corresponding inclined grooves are arranged in the mold core 5, and each inclined groove is used for limiting the corresponding demolding part 2. The four demoulding parts 2 can be driven simultaneously to eject the product workpiece from the core 1, and the movement of the demoulding part 2 at the corresponding part can be controlled according to the adhesion condition of the product workpiece and each demoulding part 2.

The core 1 of this embodiment can be connected through the screw is dismantled with mould benevolence 5, is convenient for install the core 1 of different models according to the product work piece processing of different models, can make a mould benevolence 5 cooperate a plurality of cores 1 to use convenient to use.

EXAMPLE III

The embodiment provides a demolding machine, which comprises a driving device and an anti-sticking demolding structure in the first embodiment or the second embodiment, wherein the driving device is used for automatically driving a demolding part 2 to move, so that the effect of automatic control is achieved. Further, the driving device may comprise a control system and a driving member, the control system is connected with the driving member, and the driving member is connected with the stripping module 2. The control system can also be connected with a control terminal, and the driving piece is controlled by the control terminal to drive the demoulding piece 2 to reciprocate along the chute so as to eject the product workpiece from the mold core 1.

The demoulding machine can also be matched with a grabbing device for grabbing product workpieces, and after the demoulding part is controlled by the demoulding machine to separate the product workpieces from the core, the grabbing device can pick up the separated product workpieces and transfer the separated product workpieces to a specific position, so that the whole production line is more complete.

The die core 5 is provided with a thread mounting hole 7, and the die core 5 can be communicated with the die core 1 through the thread mounting hole 7 and then is arranged on the stripper for fixation.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. An anti-sticking demoulding structure is characterized by comprising a core, a demoulding part and a secondary demoulding mechanism, wherein the core is used for moulding a product workpiece, the demoulding part is arranged below the core, and the demoulding part is used for ejecting the moulded product workpiece out to enable the product workpiece to be separated from the core; said stripper member moving relative to said product workpiece during ejection of said product workpiece by said stripper member;

the auxiliary demoulding mechanism is arranged in the demoulding part, and when the demoulding part ejects the product workpiece, the auxiliary demoulding mechanism applies acting force to the inner side part of the product workpiece to assist the product workpiece to be separated from the core.

2. The structure of claim 1, wherein the demolding member comprises a plug and a limiting plate, the limiting plate is connected with the plug and is arranged obliquely relative to the plug, and a chute is arranged in the mold core and is used for limiting and guiding the limiting plate so that the plug can move relative to the product workpiece.

3. The anti-sticking release structure according to claim 2, wherein the plug is parallel to a horizontal plane, and the angle between the limiting plate and the horizontal plane is 60 ° to 75 °; and in the process that the ejector ejects the product workpiece, the ejector moves relative to the product workpiece along the horizontal direction.

4. The anti-adhesion release structure according to claim 2, wherein one or more secondary release mechanisms are provided in the head, the secondary release mechanisms applying a force to an inner side of the product workpiece when the head ejects the product workpiece upward.

5. The anti-sticking demolding structure according to claim 4, wherein the secondary demolding mechanism comprises a plurality of sets of elastic needles and return springs, a containing cavity is arranged in the ejector head, the elastic needles and the return springs are both arranged in the containing cavity, the end of the elastic needle close to the core is a driven end, and the end of the elastic needle far away from the core is an ejection end; the side wall of the mold core close to the top is provided with a guide wall vertical to the horizontal plane; when the ejector is moved upward, the driven end moves upward along the guide wall, and the ejector end gradually projects from a side of the ejector away from the core.

6. The release structure of claim 5 wherein the plug is part of the core, the plug and the core forming a complete core when the plug is not ejected.

7. The anti-sticking demoulding structure according to claim 5, wherein the secondary demoulding machine comprises a plurality of groups of the spring pins and the return springs, the plurality of groups of the spring pins and the return springs are arranged side by side along the length direction of the top head, one end of each return spring is fixedly connected with the inner wall of the containing cavity, and the other end of each return spring is connected with the spring pin.

8. The anti-sticking mold release structure according to claim 7, wherein a support member for supporting the ejector end of the pogo pin is inserted in the plug.

9. The structure of any one of claims 2 to 8, wherein the end of the stripping member remote from the mandrel is provided with a push-pull handle for pushing and pulling the stripping member along the chute.

10. A stripper comprising drive means for automatically actuating movement of the stripper member and an anti-adhesive stripping structure as claimed in any of claims 1 to 9.

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