Slide core-pulling structure and injection mold

Abstract

The utility model relates to the technical field of injection molds, and discloses a slide core-pulling structure and an injection mold. The slide comprises a first forming part, a sliding block and a connecting rod, the connecting rod is provided with a first side inclined surface, and the sliding block is slidably arranged in the mold core in the side direction; the shifting rod is provided with a second side inclined surface, one end of the shifting rod is provided with a second forming part, the other end of the shifting rod is suitable for being connected with a template of the injection mold, and the second side inclined surface is slidably attached to the first side inclined surface; the limiting assembly comprises a limiting column, a first limiting groove and a second limiting groove, the limiting column is arranged in the mold core, and the first limiting groove and the second limiting groove are formed in the sliding block in a spaced mode; when the sliding block slides to the first limiting groove to be connected with the limiting column in an inserted mode, the slide is located at a mold closing position, and when the sliding block slides to the second limiting groove to be connected with the limiting column in an inserted mode, the slide is located at a mold opening position. Assembling can be rapidly completed through the limiting assembly, repeated debugging is not needed, and therefore the die assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a sliding core-pulling structure and an injection mold. Background Art

[0002] The slide is a structure that drives the product's undercut, depression and other structures to be pulled out or reset through lateral core pulling and lateral reset. When the slide drives the product's undercut, depression and other structures to be pulled out, it is convenient for the injection molded product to be demoulded; when the slide drives the product's undercut, depression and other structures to be reset, it is convenient for the mold to be closed for injection molding. The current slide core pulling structure includes a mold core, a slide and a lever, etc. During assembly, the assembly accuracy must be guaranteed, otherwise the injection molded product may have defects and be scrapped. In order to achieve the assembly accuracy that meets the product requirements, repeated assembly and debugging are required, so the assembly efficiency is low, wasting manpower and time. Utility Model Content

[0003] In view of this, the utility model provides a sliding core-pulling structure and an injection mold to solve the problem of low mold assembly efficiency in the prior art.

[0004] In the first aspect, the utility model provides a sliding core pulling structure, comprising:

[0005] Mold core;

[0006] A slide, comprising a first forming part, a slider and a connecting rod connecting the first forming part and the slider, wherein the connecting rod has a first side inclined surface, the first side inclined surface is arranged at an angle with the slider, the slider is slidably arranged in the mold core in a lateral direction, and a sliding hole is provided on the slider;

[0007] A lever having a second side slope, one end of which is provided with a second molding portion, the other end of which is suitable for connecting to a template of an injection mold, the second side slope being provided in the sliding hole and slidably fitting with the first side slope;

[0008] A limiting assembly comprises a limiting post and a first limiting groove and a second limiting groove respectively matched with the limiting post, wherein the limiting post is arranged in the mold core, and the first limiting groove and the second limiting groove are arranged on the slider at intervals; when the slider slides to the first limiting groove and is plugged into the limiting post, the slider is in a mold closing position, and when the slider slides to the second limiting groove and is plugged into the limiting post, the slider is in a mold opening position.

[0009] Beneficial effect: Before assembling the slide core-pulling structure, calculate in advance the distance that the slide should move from mold opening to mold closing, and then convert this distance into the distance between the first limit groove and the second limit groove on the slide. When the slide core-pulling structure of the mold needs to be assembled, first assemble the slide and the lever; then install the slide and lever assembly into the mold core, and when the first limit groove on the slide is plugged into the limit column fixed in the mold core, the slide corresponds to the position where the slide should be when the mold is closed; then pull out the lever to drive the slide to move, and when the second limit groove on the slide is plugged into the limit column fixed on the mold core, the slide corresponds to the position where the slide should be when the mold is opened; finally, connect the end of the lever away from the mold core to the template of the injection mold, thereby completing the assembly of the slide core-pulling structure. The slide core-pulling structure provided by the utility model can be quickly assembled through the limit assembly without repeated debugging, thereby improving the efficiency of mold assembly.

[0010] In an optional embodiment, the first limiting groove and the second limiting groove are arranged at intervals on the surface where the slider is connected to the first side inclined surface. The sliding hole is opened on the surface where the slider is connected to the first side inclined surface.

[0011] Beneficial effects: the first limit groove and the second limit groove are arranged at intervals on the surface where the slider connects with the first side inclined surface, which is convenient for processing; the distance that the mold should move from mold opening to mold closing is the distance between the first limit groove and the second limit groove.

[0012] In an optional embodiment, one end of the limiting column is fixed in the mold core, and a limiting bead is arranged at the other end of the limiting column; the first limiting groove and the second limiting groove are arc grooves matched with the limiting bead.

[0013] Beneficial effect: the limiting bead and the arc groove cooperate with each other, the two are convenient to plug in, and the structure is simple and reasonable.

[0014] In an optional embodiment, a threaded structure is provided on the outer periphery of the limiting column, and the limiting column is threadedly connected to the threaded hole on the mold core through the threaded structure.

[0015] Beneficial effect: The threaded structure is arranged on the periphery of the limiting column to facilitate the connection between the limiting column and the mold core.

[0016] In an optional implementation, the limiting column is a screw having the limiting bead and a threaded structure.

[0017] Beneficial effect: The limit column adopts a wave screw, which is a standard part, easy to purchase and use, and saves processing costs.

[0018] In an optional embodiment, a guide groove is formed on the first side inclined surface, and a guide block matched with the guide groove is disposed on the second side inclined surface.

[0019] Beneficial effect: The guide groove and the guide block are provided to play a guiding role during the relative sliding process between the first side inclined surface and the second side inclined surface.

[0020] In an optional embodiment, a return spring is further included, and a spring hole is provided on the side of the sliding block where the sliding direction is located, and the return spring is arranged in the spring hole.

[0021] Beneficial effect: The reset spring is provided to assist the slider in resetting when the mold is closed.

[0022] In an optional embodiment, it also includes two sliding position limit blocks spaced apart in the mold core, and each of the sliding position limit blocks is arranged at an angle to the molding surface of the mold core, a slide groove is formed between the two sliding position limit blocks, and the slider is a T-shaped slider with a T-shaped cross-section, the T-shaped slider is slidably arranged in the slide groove, and the wide part of the T-shaped slider is in contact with the surface of the sliding position limit block.

[0023] Beneficial effects: two row position limit blocks are provided, and a slide groove is formed between the two row position limit blocks to guide the movement of the slider; the wide part of the T-shaped slider fits with the surface of the row position limit block to limit the slider in the longitudinal direction.

[0024] In an optional embodiment, a mounting groove is provided on the surface opposite to the molding surface of the mold core, and the sliding position limiting block is fixed in the mounting groove by screws.

[0025] Beneficial effect: The opposite side of the molding surface of the mold core is provided with an installation groove, which is convenient for installing the sliding position limit block.

[0026] In a second aspect, the utility model further provides an injection mold, comprising: the sliding core-pulling structure.

[0027] Beneficial effect: Since the injection mold includes the sliding core-pulling structure, it has the same effect as the sliding core-pulling structure, that is, the assembly can be completed quickly through the limiting component without repeated debugging, thereby improving the mold assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a sliding core pulling structure of an embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of a sliding core pulling structure of an embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of a sliding core pulling structure of an embodiment of the utility model;

[0032] Figure 4 A cross-sectional view of a sliding core-pulling structure in a mold-opening state according to an embodiment of the utility model;

[0033] Figure 5 A cross-sectional view of a sliding core-pulling structure in a mold closing state according to an embodiment of the utility model;

[0034] Figure 6 It is a partial structural schematic diagram of a sliding core pulling structure of an embodiment of the utility model;

[0035] Figure 7 It is a partial structural schematic diagram of a sliding core pulling structure of an embodiment of the utility model;

[0036] Figure 8 It is a partial cross-sectional view of a sliding core-pulling structure in a mold-opening state according to an embodiment of the utility model;

[0037] Fig. 9 It is a partial cross-sectional view of a sliding core-pulling structure in a mold closing state according to an embodiment of the utility model;

[0038] Fig.10 A schematic diagram of the structure of the lever of an embodiment of the utility model;

[0039] Fig.11 This is a schematic diagram of the structure of the slide of an embodiment of the utility model;

[0040] Fig.12 It is a schematic structural diagram of a limiting column according to an embodiment of the utility model.

[0041] Description of reference numerals:

[0042] 10. Mold core; 20. Slider; 21. First molding part; 22. Slider; 221. Sliding hole; 222. Spring hole; 223. Wide part; 23. Connecting rod; 231. First side slope; 232. Guide groove; 30. Push rod; 31. Second side slope; 32. Second molding part; 33. Guide block; 40. Limiting assembly; 41. Limiting column; 411. Limiting bead; 42. First limiting groove; 43. Second limiting groove; 50. Slider limiting block; 60. Injection molded product. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0044] In order to solve the above problems, the following Figures 1 to 12 , describing an embodiment of the utility model.

[0045] According to an embodiment of the utility model, on the one hand, a sliding core pulling structure is provided, comprising:

[0046] A mold core 10, used for molding an injection molded product 60;

[0047] The slider 20 includes a first molding part 21, a slider 22, and a connecting rod 23 connecting the first molding part 21 and the slider 22. The first molding part 21 is used to mold a set position of an injection mold, such as an undercut on the injection mold. The connecting rod 23 has a first side inclined surface 231, and the first side inclined surface 231 is arranged at an angle with the slider 22. The slider 22 is slidably arranged in the mold core 10 in the side direction, and a sliding hole 221 is provided on the slider 22.

[0048] The lever 30 has a second side inclined surface 31. One end of the lever 30 is provided with a second molding portion 32. The other end of the lever 30 is suitable for connecting to the template of the injection mold. The second side inclined surface 31 is provided in the sliding hole 221 and slidably fits with the first side inclined surface 231. Specifically, the other end of the lever 30 is suitable for connecting to the lower mold fixing plate of the injection mold.

[0049] The limiting assembly 40 includes a limiting column 41 and a first limiting groove 42 and a second limiting groove 43 respectively matched with the limiting column 41. The limiting column 41 is arranged in the mold core 10, and the first limiting groove 42 and the second limiting groove 43 are arranged on the slider 22 at intervals; when the slider 22 slides to the first limiting groove 42 and is plugged into the limiting column 41, the first molding portion 21 of the slider 20 is in the mold closing position, and when the slider 22 slides to the second limiting groove 43 and is plugged into the limiting column 41, the first molding portion 21 of the slider 20 is in the mold opening position.

[0050] Before assembling the slide core-pulling structure, the distance that the slide 20 should move during the process from mold opening to mold closing or from mold closing to mold opening is calculated in advance according to the mold opening stroke, and then the distance that the slide 20 should move is converted into the distance between the first limit groove 42 and the second limit groove 43 on the slide 20. When it is necessary to assemble the slide core-pulling structure of the mold, first assemble the slide 20 and the lever 30; then install the slide 20 and the lever 30 assembly into the mold core 10; insert the lever 30 into the mold core 10 to drive the slide 20 to move, and when the slide 20 moves to When the first limiting groove 42 is plugged into the limiting column 41 fixed in the mold core 10, the position of the slider 20 corresponds to the position where the slider 20 should be when the mold is closed; then the lever 30 is pulled away from the mold core 10 to drive the slider 20 to move, and when the second limiting groove 43 on the slider 20 is plugged into the limiting column 41 fixed on the mold core 10, the position of the slider 20 corresponds to the position where the slider 20 should be when the mold is opened; finally, the end of the lever 30 away from the mold core 10 is connected to the template of the injection mold, thereby completing the assembly of the slider core-pulling structure. The slider core-pulling structure provided by the utility model can be quickly assembled through the limiting assembly 40 without repeated debugging, thereby improving the mold assembly efficiency.

[0051] like Figures 4 to 7 As shown, in one embodiment, the first limiting groove 42 and the second limiting groove 43 are arranged at intervals on the surface where the slider 22 connects with the first side inclined surface 231. The sliding hole 221 is opened on the surface where the slider 22 connects with the first side inclined surface 231.

[0052] The first limiting groove 42 and the second limiting groove 43 are arranged at intervals on the surface where the slider 22 connects with the first side inclined surface 231 for easy processing; the distance that the mold should move from mold opening to mold closing is the distance between the first limiting groove 42 and the second limiting groove 43.

[0053] like Figures 4 to 7 as well as Fig.12 As shown, in one embodiment, one end of the limiting column 41 is fixed in the mold core 10, and the other end of the limiting column 41 is provided with a limiting bead 411; the first limiting groove 42 and the second limiting groove 43 are arc grooves adapted to the limiting bead 411. The limiting bead 411 cooperates with the arc groove, the two are convenient to plug in, and the structure is simple and reasonable.

[0054] In one embodiment, a threaded structure is provided on the periphery of the limiting post 41, and the limiting post 41 is threadedly connected to the threaded hole on the mold core 10 through the threaded structure. The threaded structure is provided on the periphery of the limiting post 41 to facilitate the connection between the limiting post 41 and the mold core 10.

[0055] like Fig.12As shown, in one embodiment, the limiting column 41 is a wave screw, which has a limiting bead 411 and a thread structure. The limiting column 41 adopts a wave screw, which is a standard part, is easy to purchase and use, and saves processing costs.

[0056] like Figures 7 to 10 As shown, in one embodiment, the first side inclined surface 231 is provided with a guide groove 232, and the second side inclined surface 31 is provided with a guide block 33 adapted to the guide groove 232. Specifically, the guide groove 232 is a T-shaped slot with a T-shaped cross section, and the guide block 33 is a T-shaped block with a T-shaped cross section.

[0057] The guide groove 232 and the guide block 33 are provided to play a guiding role during the relative sliding process between the first side inclined surface 231 and the second side inclined surface 31 .

[0058] like Figures 8 to 9 As shown, in one embodiment, a return spring is further included, and the slider 22 is provided with a spring hole 222 on the side where the sliding direction is located, and the return spring is arranged in the spring hole 222. The return spring can assist the slider 22 in returning to its original position when the mold is closed.

[0059] like Figure 6 to Figure 7 As shown, in one embodiment, it also includes two sliding limit blocks 50 spaced apart in the mold core 10, and each sliding limit block 50 is set at an angle to the molding surface of the mold core 10, and a slide groove is formed between the two sliding limit blocks 50, and the slider 22 is a T-shaped slider with a T-shaped cross-section. The T-shaped slider is slidably set in the slide groove, and the wide portion 223 of the T-shaped slider is in contact with the surface of the sliding limit block 50.

[0060] Two position limiting blocks 50 are provided, and a slide groove is formed between the two position limiting blocks 50 to guide the movement of the slider 22; the wide portion 223 of the T-shaped slider fits with the surface of the position limiting block 50 to limit the slider 22 in the longitudinal direction.

[0061] like Figure 6 to Figure 7 As shown, in one embodiment, a mounting groove is provided on the opposite side of the molding surface of the mold core 10, and the position limiting block 50 is fixed in the mounting groove by screws.

[0062] The opposite surface of the molding surface of the mold core 10 is provided with an installation groove to facilitate the installation of the sliding position limit block 50.

[0063] According to an embodiment of the present utility model, on the other hand, an injection mold is provided, comprising the sliding core pulling structure.

[0064] After the injection molding is completed, the injection mold is opened, and the lower mold fixed plate drives the lever 30 away from the mold core 10. During the movement of the lever 30, the second side inclined surface 31 slides with the first side inclined surface 231, thereby driving the first molding part 21 of the slide 20 to move in the direction of retreating from the injection molded product 60. When the mold opening is completed, the limiting column 41 is just plugged into the second limiting groove 43; when injection molding is required, the lower mold fixed plate drives the lever 30 close to the mold core 10. During the movement of the lever 30, the second side inclined surface 31 slides with the first side inclined surface 231, thereby driving the first molding part 21 of the slide 20 to move in the direction of approaching the injection molded product 60. When the mold is closed, the limiting column 41 is just plugged into the first limiting groove 42.

[0065] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A sliding core pulling structure, characterized in that: include: A mold core (10); A slide (20) comprises a first forming part (21), a slider (22) and a connecting rod (23) connecting the first forming part (21) and the slider (22), wherein the connecting rod (23) has a first side inclined surface (231), the first side inclined surface (231) and the slider (22) are arranged at an angle, the slider (22) is slidably arranged in the mold core (10) in a lateral direction, and a sliding hole (221) is provided on the slider (22); A lever (30) having a second side inclined surface (31), one end of the lever (30) being provided with a second molding portion (32), the other end of the lever (30) being suitable for connecting to a mold plate of an injection mold, the second side inclined surface (31) being arranged in the sliding hole (221) and slidably fitting with the first side inclined surface (231); The limiting assembly (40) comprises a limiting column (41) and a first limiting groove (42) and a second limiting groove (43) respectively matched with the limiting column (41); the limiting column (41) is arranged in the mold core (10); the first limiting groove (42) and the second limiting groove (43) are arranged on the slider (22) at intervals; when the slider (22) slides to the first limiting groove (42) and is plugged into the limiting column (41), the slider (20) is in a mold closing position; when the slider (22) slides to the second limiting groove (43) and is plugged into the limiting column (41), the slider (20) is in a mold opening position.

2. The slide core pulling structure according to claim 1, characterized in that: The first limiting groove (42) and the second limiting groove (43) are arranged at intervals on the surface where the slider (22) is connected to the first side inclined surface (231); the sliding hole (221) is opened on the surface where the slider (22) is connected to the first side inclined surface (231).

3. The slide core pulling structure according to claim 1, characterized in that: One end of the limiting column (41) is fixed in the mold core (10), and the other end of the limiting column (41) is provided with a limiting bead (411); the first limiting groove (42) and the second limiting groove (43) are arc grooves adapted to the limiting bead (411).

4. The slide core pulling structure according to claim 3, characterized in that: A threaded structure is arranged on the outer periphery of the limiting column (41), and the limiting column (41) is threadedly connected to a threaded hole on the mold core (10) via the threaded structure.

5. The slide core pulling structure according to claim 4, characterized in that: The limiting column (41) is a screw having the limiting bead (411) and a threaded structure.

6. The slide core pulling structure according to claim 1, characterized in that: The first side inclined surface (231) is provided with a guide groove (232), and the second side inclined surface (31) is provided with a guide block (33) adapted to the guide groove (232).

7. The sliding core pulling structure according to any one of claims 1 to 6, characterized in that: It also includes a return spring. The sliding block (22) is provided with a spring hole (222) on the side where the sliding direction is located, and the return spring is arranged in the spring hole (222).

8. The slide core pulling structure according to claim 7, characterized in that: It also includes two position limiting blocks (50) spaced apart in the mold core (10), and each of the position limiting blocks (50) is arranged at an angle to the molding surface of the mold core (10), a slide groove is formed between the two position limiting blocks (50), and the slider (22) is a T-shaped slider with a T-shaped cross-section, the T-shaped slider is slidably arranged in the slide groove, and the wide portion (223) of the T-shaped slider is in contact with the surface of the position limiting block (50).

9. The slide core pulling structure according to claim 8, characterized in that: The surface opposite to the molding surface of the mold core (10) is provided with a mounting groove, and the travel limit block (50) is fixed in the mounting groove by means of screws.

10. An injection mold, characterized in that: include: The sliding core pulling structure according to any one of claims 1 to 9.

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