CN218857586U - Core pulling structure and mold - Google Patents

Abstract

The utility model provides a structure of loosing core and mould. Wherein, the structure of loosing core can cooperate with injection moulding product, and the structure of loosing core includes: the core pulling device comprises a core pulling body, wherein a slide way is arranged in the core pulling body, and one end of the slide way penetrates through the upper end surface of the core pulling body along the core pulling direction of the core pulling body; the inclined ejector block is slidably arranged in the slide way and provided with a bayonet, the bayonet is obliquely arranged along the core pulling direction, and the inclined ejector block is provided with a forming position for enabling the injection molding product to form a buckle through the bayonet and a separating position for enabling the bayonet to be disengaged from the buckle; the limiting part is arranged on the inclined ejector block, a limiting groove communicated with the slide way is further formed in the core pulling body, and the core pulling body moves along the core pulling direction, so that the limiting part is provided with a first limiting position matched with a side wall stop of the limiting groove and a second limiting position matched with the other side wall stop of the limiting groove. The technical scheme of this application has solved the unable problem of being taken out of pentroof mold insert among the correlation technique effectively.

Description

Core pulling structure and mold

Technical Field

The utility model relates to the technical field of molds, particularly, relate to a structure of loosing core and mould.

Background

When the mold is matched with a core-pulling structure in the related art, the core-pulling operation is needed after injection molding, and the core-pulling structure is needed in the core-pulling operation. And the core-pulling structure performs core-pulling movement during core-pulling operation, and the direction of the core-pulling movement is the core-pulling direction.

In the related art, for example, chinese patent application publication No. CN101947837A discloses a core-pulling structure with an inverted buckle in the core-pulling direction of a slider, and in the application document, the core-pulling structure with an inverted buckle in the core-pulling direction of a slider includes a slider and a locking block, and the slider is connected to the locking block. The inner side of the pitched roof insert is communicated with an inclined plane contracted in the center of the product, an outward convex lug is arranged on the inner side of the pitched roof insert, the outer side of the sliding block is an inclined plane, a guide rail is embedded in the outer side of the sliding block, and the lug is embedded in the guide rail.

Foretell latch segment drives the slider and moves to keeping away from the product direction, and the pentroof mold insert keeps receiving the hindrance of product back-off part and can't follow the slider and moves together, and guide rail and lug produce relative motion for the guide rail is to the internal contraction, drives the pentroof mold insert and internal contraction, and the outside and the back-off part of pentroof mold insert accomplish to loose the core until the pentroof mold insert, later the pentroof mold insert along with the slider is accomplished whole and is loosed the core together, and it can make the slider loose the core the direction and have the product one shot forming of back-off, and is time-saving and labor-saving, and machining efficiency is high.

In the process of integrally pulling the core of the pitched-roof insert along with the sliding block, the pitched-roof insert is required to be matched with the ejector rod, and the pitched-roof insert is taken out by using the ejector pin plate. Or the pitched roof insert is matched with the pitched roof insert seat, and the pitched roof insert is taken out by using the ejector plate.

However, the structure of some products is limited, the die needs to use the sliding block and the pitched roof insert at the same time, and the sliding block interferes with the ejector rod and the pitched roof insert seat, so that the ejector pin plate cannot be used, the ejection structure cannot be arranged, and the pitched roof insert cannot be taken out.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a structure of loosing core and mould to the oblique top mold insert that solves among the correlation technique can't be by the problem of taking out.

In order to realize the above-mentioned purpose, according to the utility model discloses an aspect provides a structure of loosing core, can cooperate with injection moulding product, and the structure of loosing core includes: the core pulling device comprises a core pulling body, wherein a slide way is arranged in the core pulling body, and one end of the slide way penetrates through the upper end surface of the core pulling body along the core pulling direction of the core pulling body; the inclined ejecting block is slidably arranged in the slide way and provided with a bayonet, the bayonet is obliquely arranged along the core-pulling direction, and the inclined ejecting block is provided with a forming position for enabling the injection-molded product to form the buckle through the bayonet and a separating position for enabling the bayonet and the buckle to be disengaged; the limiting part sets up in oblique kicking block, still be provided with the spacing groove with the slide intercommunication on the core body of loosing, the body of loosing core removes along the direction of loosing core to make the limiting part have with a lateral wall backstop complex first limit position of spacing groove and with another lateral wall backstop complex second limit position of spacing groove, when the limiting part switches between first limit position and second limit position, the body of loosing core removes for injection moulding product in advance in oblique kicking block, the back drives oblique kicking block and removes along the direction of loosing core, so that oblique kicking block is switched to the isolated position by the shaping position.

Furthermore, an acute angle included angle between the inclined ejecting block and the horizontal plane is larger than an acute angle included angle between the core pulling direction and the horizontal plane.

Further, be provided with the first holding tank with the slide intercommunication on the lateral wall of taking out the core, oblique kicking block includes that the slidable sets up the slider portion in the slide and sets up the shaping convex part in first holding tank, and the locating part sets up in slider portion, and the bayonet socket sets up on the shaping convex part.

Further, a mounting hole is formed in the sliding block portion, and the limiting piece penetrates through the mounting hole.

Furthermore, the limiting part comprises a limiting column penetrating through the mounting hole and a stop block connected with the end of the limiting column, the limiting column is in limit fit with one side wall of the limiting groove or the other side wall of the limiting groove, and the stop block is in stop fit with the bottom wall of the limiting groove.

Furthermore, the core pulling structure further comprises a baffle arranged on the side wall of the core pulling body, and the baffle shields the limiting groove to limit the stop block in the limiting groove.

Further, the baffle plate is detachably connected to the side wall of the drawer core body.

Furthermore, the baffle is provided with a first connecting hole, the side wall of the core pulling body is provided with a second connecting hole corresponding to the first connecting hole, and the core pulling structure further comprises a fastener, and the fastener penetrates through the first connecting hole and the second connecting hole to connect the baffle to the side wall of the core pulling body.

Further, still be provided with the second holding tank that holds the baffle on the lateral wall of the body of loosing core.

Furthermore, the drawing core body is further provided with a avoiding hole for avoiding the limiting column, and the avoiding hole is communicated with the slide way and the limiting groove.

Further, the bayonet comprises a first inclined surface and a second inclined surface which forms an angle with the first inclined surface, and the first inclined surface and the second inclined surface are both obliquely arranged relative to the core pulling direction; and/or the slide way is arranged obliquely to the horizontal plane.

According to the utility model discloses an on the other hand provides a mould, including front mould benevolence, back mould benevolence and the structure of loosing core, back mould benevolence and front mould benevolence can open and shut and set up, and the structure of loosing core is foretell structure of loosing core, and the structure of loosing core can take out to set up in back mould benevolence.

Use the technical scheme of the utility model, the structure of loosing core can cooperate with injection moulding product. The structure of loosing core includes: the core body, oblique kicking block and locating part take out. A slide way is arranged in the core-pulling body, and one end of the slide way penetrates through the upper end face of the core-pulling body along the core-pulling direction of the core-pulling body. The inclined ejector block is slidably arranged in the slide way and is provided with a bayonet which is obliquely arranged along the core-pulling direction. The inclined ejecting block is provided with a forming position for enabling the injection molding product to form a buckle through the bayonet and a separating position for enabling the bayonet and the buckle to be disengaged. The limiting part is arranged on the inclined ejector block, a limiting groove communicated with the slide way is further formed in the core pulling body, and the core pulling body moves along the core pulling direction, so that the limiting part has a first limiting position matched with a side wall stop of the limiting groove and a second limiting position matched with the other side wall stop of the limiting groove. When the mould begins to carry out injection molding, the core pulling structure is positioned in the mould. When the injection molding of the mold is completed and the core pulling operation is not performed on the core pulling structure, the core pulling structure is located in the mold, the inclined ejector block is located in a slide way of the core pulling body and is relatively static with the core pulling body, the inclined ejector block is located at a molding position where an injection molding product forms a buckle through a bayonet, and the limiting part is located at a first limiting position at the moment. When the mould is moulded plastics and is accomplished and begin to loose core the structure and operate, the structure of loosing core begins to remove along the direction of loosing core in the mould, the spacing groove of the body of loosing core removes along the direction of loosing core, because the locating part when switching between first limiting position and second limiting position, the body of loosing core removes for injection moulding product in advance in the oblique kicking block, the back drives oblique kicking block and removes along the direction of loosing core, so that oblique kicking block is switched to the isolated position by the shaping position, the bayonet socket and the buckle of oblique kicking block are tripped, the locating part is in second limiting position this moment, the oblique kicking block of structure of loosing core and the structure of loosing core is taken out from the mould together, accomplish the operation of loosing core. Therefore, the technical scheme of this application has solved the unable problem of being taken out of the pentroof mold insert among the relevant art effectively.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic front view of a core pulling structure according to an embodiment of the present invention in cooperation with an injection molded product;

fig. 2 shows an exploded schematic structural view of an embodiment of a core pulling structure according to the present invention;

FIG. 3 shows a schematic top view of the mold of FIG. 1;

FIG. 4 showsbase:Sub>A cross-sectional view of the mold of FIG. 3 in the direction A-A;

FIG. 5 shows a close-up view at E of the mold of FIG. 4;

FIG. 6 shows a cross-sectional view of the mold of FIG. 3 in the direction B-B;

FIG. 7 shows a cross-sectional view of the mold of FIG. 3 in the direction C-C;

FIG. 8 shows a cross-sectional view of the mold of FIG. 3 in the direction D-D;

FIG. 9 shows a perspective view of the limiter of the mold of FIG. 1 in a second limiting position;

fig. 10 shows a perspective view of the core back body of the core back structure of fig. 2.

Wherein the figures include the following reference numerals:

10. a core pulling structure; 11. drawing the core body; 111. a slideway; 112. a first accommodating groove; 113. a limiting groove; 114. a second connection hole; 115. a second accommodating groove; 116. avoiding holes; 12. a slanted ejecting block; 121. a slider portion; 122. forming a convex part; 123. a bayonet; 1231. a first inclined plane; 1232. a second inclined plane; 124. mounting holes; 13. a limiting member; 131. a limiting column; 132. a stop block; 14. a baffle plate; 141. a first connection hole; 15. a fastener;

20. injection molding a product; 21. buckling; 30. and a rear mold core.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, 3 to 7 and 9, the core back structure 10 of the present embodiment can be matched with an injection molded product 20. The core pulling structure 10 includes: core pulling body 11, inclined top block 12 and limiting piece 13. A slide rail 111 is arranged in the core pulling body 11, and one end of the slide rail 111 penetrates through the upper end face of the core pulling body 11 along the core pulling direction of the core pulling body 11. The inclined ejecting block 12 is slidably arranged in the slide rail 111, the inclined ejecting block 12 is provided with a bayonet 123, and the bayonet 123 is obliquely arranged along the core pulling direction. The lifter block 12 has a molding position for forming the injection-molded product 20 into the hook 21 by the bayonet 123 and a separation position for releasing the bayonet 123 from the hook 21. The limiting member 13 is disposed on the inclined ejector block 12, the core pulling body 11 is further provided with a limiting groove 113 communicated with the slide rail 111, and the core pulling body 11 moves along the core pulling direction, so that the limiting member 13 has a first limiting position in stop fit with one side wall of the limiting groove 113 and a second limiting position in stop fit with the other side wall of the limiting groove 113. When the limiting member 13 is switched between the first limiting position and the second limiting position, the core pulling body 11 moves relative to the injection product 20 in advance of the inclined ejecting block 12, and then drives the inclined ejecting block 12 to move along the core pulling direction, so that the inclined ejecting block 12 is switched from the forming position to the separating position.

By applying the technical scheme of the embodiment, when the mold starts to perform injection molding, the core pulling structure 10 is located in the mold. When the injection molding of the mold is completed and the core pulling operation is not performed on the core pulling structure 10, the core pulling structure 10 is located in the mold, the slider portion 121 of the inclined ejector block 12 is located in the slide rail 111 of the core pulling body 11 and is relatively static with the core pulling body 11, the inclined ejector block 12 is located at a molding position where the injection molding product 20 forms the buckle 21 through the bayonet 123, and the limiting member 13 is located at the first limiting position at this time. When the injection molding of the mold is completed and the core pulling operation of the core pulling structure 10 is started, the core pulling structure 10 starts to move in the mold along the core pulling direction, the limiting groove 113 of the core pulling body 11 moves in the core pulling direction, and because the limiting part 13 is switched between the first limiting position and the second limiting position, the core pulling body 11 moves relative to the injection product 20 in advance of the inclined ejector block 12, and then drives the inclined ejector block 12 to move in the core pulling direction, so that the inclined ejector block 12 is switched from the molding position to the separation position, so that the bayonet 123 of the inclined ejector block 12 is disengaged from the buckle 21, and at this time, the limiting part is in the second limiting position, and the core pulling structure 10 and the inclined ejector block 12 of the core pulling structure 10 are taken out of the mold together, and the core pulling operation is completed. Therefore, the technical scheme of the embodiment effectively solves the problem that the pitched-roof insert in the related art cannot be taken out.

Specifically, the utility model discloses a with the kicking block 12 to one side with the direction of loosing core angle setting, lead to when the core body of loosing core is removing the direction of loosing core, kicking block 12 to one side produces the removal of the direction of loosing core perpendicularly. The person skilled in the art can set the angle between the inclined ejecting block and the core-pulling direction according to the tripping direction and the tripping speed. It can be expected that the greater the angle between the axis of the inclined ejecting block and the core-pulling direction is, the faster the tripping is. And the utility model discloses preferably set up the acute angle contained angle of oblique kicking block 12 and horizontal plane and be greater than the acute angle contained angle of the orientation of loosing core and horizontal plane in order to form above-mentioned angle, reach the purpose that the buckle slope of oblique kicking block and injection moulding product upwards realized the dropout.

As shown in fig. 2 to 5, a first receiving groove 112 communicating with the slide rail 111 is provided on a side wall of the drawer core body 11, the inclined ejector block 12 includes a slider portion 121 slidably disposed in the slide rail 111 and a molding protrusion 122 disposed in the first receiving groove 112, the stopper 13 is disposed on the slider portion 121, and the bayonet 123 is disposed on the molding protrusion 122. When the injection molding of the mold is completed and the core pulling operation is not performed on the core pulling structure 10, the core pulling structure 10 is located in the mold, at this time, the slider portion 121 of the inclined ejector block 12 is located in the slide rail 111 of the core pulling body 11 and is relatively stationary with the core pulling body 11, and the molding convex portion 122 of the inclined ejector block 12 is located in the first accommodating groove 112. The bayonet 123 on the molding convex portion 122 enables the injection molding product 20 to be processed to form the buckle 21, and the buckle 21 and the bayonet 123 can be buckled and matched, so that the inclined ejecting block 12 and the injection molding product 20 are relatively static, and the inclined ejecting block 12 is convenient to be in a molding position. When the injection molding of the mold is completed and the core pulling operation is started on the core pulling structure 10, the core pulling body 11 drives the inclined ejector block 12 to move along the core pulling direction, and the molding convex portion 122 easily protrudes out of the first accommodating groove 112. In this process, the resultant force of the friction force of the catch 21 and the supporting force on the upper surface of the molding protrusion 122 contacting the catch 21 is perpendicular to the core pulling direction, so that the molding protrusion 122 moves relative to the catch 21 in the direction perpendicular to the core pulling direction.

Specifically, in this embodiment, both ends of the slideway 111 of the core pulling body 11 penetrate through the upper end surface and the lower end surface of the core pulling body 11 along the core pulling direction of the core pulling body 11, so that the processing of the core pulling body 11 is more convenient.

As shown in fig. 2 to 4, a mounting hole 124 is provided in the slider portion 121, and the limiting member 13 is inserted into the mounting hole 124, so that the lifter block 12 and the limiting member 13 can be fixedly connected, and the limiting member 13 can limit the displacement of the lifter block 12.

As shown in fig. 2 to 9, the limiting member 13 includes a limiting post 131 penetrating the mounting hole 124 and a stop block 132 connected to an end of the limiting post 131. The limiting column 131 is in limiting fit with one side wall of the limiting groove 113 or the other side wall of the limiting groove 113. When the position limiting element 13 is located at the first position, the position limiting post 131 is in position limiting engagement with a sidewall of the position limiting groove 113. When the limiting member 13 is located at the second limiting position, the limiting post 131 is in limiting fit with the other side wall of the limiting groove 113. The stop block 132 is in stop fit with the bottom wall of the limiting groove 113, so that the limiting member 13 cannot be released from the limiting groove 113 along the direction that the limiting column 131 is far away from the stop block 132.

As shown in fig. 2 to 10, the core pulling structure 10 further includes a baffle 14 disposed on the side wall of the core pulling body 11, and the baffle 14 shields the limiting groove 113 to limit the stop block 132 in the limiting groove 113. So that the limiting member 13 cannot be separated from the limiting groove 113 along the direction from the limiting column 131 to the stopping block 132, and thus, the stopping block 132 and the baffle 14 cooperate to limit a part of the limiting column 131 in the limiting groove 113, so that the limiting member 13 cannot be separated from the limiting groove 113.

As shown in fig. 2, 8 and 9, the baffle 14 is detachably attached to the side wall of the drawer core body 11. After the baffle 14 is removed, the limiting member 13 can be taken out of the limiting groove 113, so that the inclined top block 12 connected with the limiting member 13 can be taken out of the slide rail 111 and the first accommodating groove 112. The replacement operation and the maintenance operation of the limiting piece 13 and the inclined top block 12 are facilitated.

As shown in fig. 2 and fig. 6 to 9, the baffle 14 is provided with a first connection hole 141, the side wall of the core back body 11 is provided with a second connection hole 114 corresponding to the first connection hole 141, and the core back structure 10 further includes a fastener 15, and the fastener 15 passes through the first connection hole 141 and the second connection hole 114 to connect the baffle 14 to the side wall of the core back body 11. The arrangement of the fastening member 15 further facilitates the disassembly of the baffle plate 14, and also further facilitates the replacement operation and maintenance operation of the limiting member 13 and the lifter block 12. In the present embodiment, the fastener 15 is preferably a screw.

As shown in fig. 2 and 6 to 9, a second accommodating groove 115 for accommodating the baffle 14 is further provided in the sidewall of the drawer core body 11. The baffle 14 can not bulge out of the side wall of the core pulling body 11 due to the arrangement of the second accommodating groove 115, so that the core pulling structure 10 can be smoothly taken out of the mold when the core pulling operation is performed on the core pulling structure 10.

As shown in fig. 2 and 6, in order to avoid the interference between the limiting column 131 and the core pulling body 11, an avoiding hole 116 for avoiding the limiting column 131 is further formed in the core pulling body 11, and the avoiding hole 116 is communicated with the slide rail 111 and the limiting groove 113. In this embodiment, one end of the avoiding hole 116 penetrates through a part of the bottom wall of the limiting groove 113, and the avoiding hole 116 penetrates through the front side surface and the rear side surface of the core back body 11 along the front-rear direction of the core back body 11, so that the processing is more convenient.

As shown in fig. 2, 4 and 5, the bayonet 123 includes a first inclined surface 1231 and a second inclined surface 1232 disposed at an angle with the first inclined surface 1231, and both the first inclined surface 1231 and the second inclined surface 1232 are disposed obliquely with respect to the horizontal plane, so that an acute included angle between the inclined ejector block 12 and the horizontal plane is greater than an acute included angle between the core pulling direction and the horizontal plane. The slideway 111 is arranged obliquely to the core pulling direction. Therefore, the core pulling body 11 drives the inclined ejecting block 12 to perform core pulling movement along an inclined direction, so as to complete a tripping action, and the first inclined surface 1231 is an upper surface of the molding convex portion 122, where the bayonet is in contact with the buckle 21.

In an embodiment not shown in the drawings, the bayonet comprises a first inclined surface and a second inclined surface arranged at an angle with the first inclined surface, and the first inclined surface and the second inclined surface are both arranged obliquely relative to a horizontal plane, or the slide way is arranged obliquely with the core pulling direction.

The present application further provides a mold, as shown in fig. 1, the mold includes a front mold core, a rear mold core 30 and a core pulling structure 10. The rear mold core 30 and the front mold core are arranged in an openable manner, the core pulling structure is the core pulling structure, and the core pulling structure 10 is arranged in the rear mold core 30 in a removable manner. Due to the fact that the core-pulling structure can solve the problem that the pitched-roof insert in the related art cannot be taken out, the mold with the core-pulling structure can solve the same technical problem. When the rear mold core 30 and the front mold core are closed, the front mold core contacts with the inclined top to form a broken surface, and the inclined top block 12 can be pressed back into the mold core.

In addition, the core pulling structure 10 in this embodiment performs core pulling movement during mold opening, so as to drive the inclined ejecting block 12 to be separated from the injection molding product 20, and does not depend on an auxiliary device outside the mold, so that the overall structure of the mold is more compact, the size of the whole mold is smaller, the occupied space of the mold is saved, the cost is saved, the production is stable, the performance of the mold is reliable, the maintenance is simple, the structure of the mold is optimized, the production efficiency of the mold is improved, and the production cost is reduced.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, upper, lower, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A structure of loosing core, can cooperate with injection moulding product (20), its characterized in that, structure of loosing core (10) includes:

the core pulling device comprises a core pulling body (11), wherein a slide way (111) is arranged in the core pulling body (11), and one end of the slide way (111) penetrates through the upper end face of the core pulling body (11) along the core pulling direction of the core pulling body (11);

the inclined ejecting block (12) is slidably arranged in the slide rail (111), the inclined ejecting block (12) is provided with a bayonet (123), the bayonet (123) is obliquely arranged along the core pulling direction, and the inclined ejecting block (12) is provided with a forming position for enabling the injection molding product (20) to form a buckle (21) through the bayonet (123) and a separating position for enabling the bayonet (123) and the buckle (21) to be separated;

the limiting part (13) is arranged on the inclined ejecting block (12), a limiting groove (113) communicated with the slide way (111) is further arranged on the core pulling body (11), the core pulling body (11) moves along the core pulling direction, so that the limiting part (13) is provided with a first limiting position matched with a side wall stop of the limiting groove (113) and a second limiting position matched with another side wall stop of the limiting groove (113), when the limiting part (13) is switched between the first limiting position and the second limiting position, the core pulling body (11) is prior to the inclined ejecting block (12) to move relative to the injection molding product (20), and then the inclined ejecting block (12) is driven to move along the core pulling direction, so that the inclined ejecting block (12) is switched to the separation position from the molding position.

2. The core pulling structure according to claim 1, characterized in that the acute angle included angle of the inclined ejecting block (12) and the horizontal plane is larger than the acute angle included angle of the core pulling direction and the horizontal plane.

3. The core pulling structure according to claim 1, wherein a first accommodating groove (112) communicated with the slide rail (111) is formed in a side wall of the core pulling body (11), the lifter block (12) includes a slider portion (121) slidably disposed in the slide rail (111) and a molding protrusion (122) disposed in the first accommodating groove (112), the stopper (13) is disposed on the slider portion (121), and the bayonet (123) is disposed on the molding protrusion (122).

4. The core pulling structure according to claim 3, wherein a mounting hole (124) is formed in the slider portion (121), and the stopper (13) is inserted into the mounting hole (124).

5. The core pulling structure according to claim 4, wherein the limiting member (13) comprises a limiting column (131) penetrating through the installation hole (124) and a stop block (132) connected with an end of the limiting column (131), the limiting column (131) is in limit fit with one side wall of the limiting groove (113) or the other side wall of the limiting groove (113), and the stop block (132) is in stop fit with a bottom wall of the limiting groove (113).

6. The core pulling structure according to claim 5, further comprising a baffle (14) arranged on a side wall of the core pulling body (11), wherein the baffle (14) shields the limiting groove (113) to limit the stop block (132) within the limiting groove (113).

7. The core pulling structure according to claim 6, characterized in that the baffle (14) is detachably connected to a side wall of the core pulling body (11).

8. The core pulling structure according to claim 7, wherein the baffle (14) is provided with a first connecting hole (141), the side wall of the core pulling body (11) is provided with a second connecting hole (114) corresponding to the first connecting hole (141), and the core pulling structure further comprises a fastener (15), and the fastener (15) penetrates through the first connecting hole (141) and the second connecting hole (114) to connect the baffle (14) to the side wall of the core pulling body (11).

9. The core pulling structure according to claim 6, characterized in that a second accommodating groove (115) for accommodating the baffle (14) is further provided on the side wall of the core pulling body (11).

10. The core pulling structure according to claim 5, wherein an avoiding hole (116) for avoiding the limiting column (131) is further formed in the core pulling body (11), and the avoiding hole (116) is communicated with the slide rail (111) and the limiting groove (113).

11. The core pulling structure according to claim 1,

the bayonet (123) comprises a first inclined surface (1231) and a second inclined surface (1232) which forms an angle with the first inclined surface (1231), and both the first inclined surface (1231) and the second inclined surface (1232) are arranged obliquely relative to the core pulling direction;

and/or the slide way (111) is arranged obliquely to the horizontal plane.

12. A mould, including preceding mould benevolence, back mould benevolence (30) and structure of loosing core (10), its characterized in that, back mould benevolence (30) with preceding mould benevolence can open and shut and set up, the structure of loosing core be any one of claims 1 to 11 the structure of loosing core, structure of loosing core (10) set up in back mould benevolence (30) with taking out.

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