Die capable of preventing sliding block from sticking to die

Abstract

The utility model provides a mold capable of preventing a block from sticking to the mold. The mold comprises a panel, a plate A, a plate B, an ejector plate and a bottom plate, the panel, the plate A, the plate B, the ejector plate and the bottom plate are sequentially arranged, the side, close to the plate B, of the plate A is connected with a front mold core, the side, close to the plate A, of the plate B is provided with a rear mold core, shovel bases are arranged on the two sides of the front mold core and connected with the plate A, inclined guide columns are connected to the shovel bases, sliding blocks are arranged on the two sides of the rear mold core, and the inclined guide columns extend into inclined holes formed in the sliding blocks. The sliding block is provided with an elastic needle device. The front mold core, the rear mold core and the sliding block jointly form a mold cavity, and a product is subjected to injection molding in the mold cavity. And the vibrating needle device extends into the mold cavity. When the mold is opened, the vibrating needle device abuts against the product, so that the product is separated from the sliding block. According to the utility model, the slide block and the product are prevented from being adhered, the product deformation caused by adhesion in the demolding process is avoided, burrs and scratches of the product are avoided, the product quality is improved, and the production stability is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and particularly relates to a mold for preventing a sliding block from sticking to the mold. Background Art

[0002] During injection molding of high-precision products, the structural characteristics of the product can easily cause adhesion between the product and the slider, leading to product warping, burrs, and significant scratches on the slider. This makes it difficult to control product dimensions and results in low yield rates. During mold trials, attempts were made to improve the slider's surface finish, increase the draft angle, and adjust the cooling temperature. However, these methods did not yield the desired results, preventing stable mass production.

[0003] Therefore, the above problems need to be solved urgently. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the utility model provides a mold that prevents the slider from sticking to the mold, solves the problem of excessive clamping force in the slider area during demoulding, separates the slider and the product, and demoulds smoothly, avoiding deformation of the product, avoiding product scratches and burrs, and meeting the needs of large-scale stable production.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a mold for preventing the slider from sticking to the mold, comprising a panel, plate A, plate B, a pin plate, and a bottom plate. The panel, plate A, plate B, pin plate, and bottom plate are arranged in sequence, the side of plate A close to plate B is connected to the front mold core, the side of plate B close to plate A is provided with a rear mold core, shovel bases are provided on both sides of the front mold core, the shovel bases are connected to plate A, the shovel bases are connected to inclined guide pillars, sliders are provided on both sides of the rear mold core, and the inclined guide pillars extend into the inclined holes provided on the slider. The slider is provided with a spring pin device. The front mold core, the rear mold core, and the slider together constitute a mold cavity, and the product is injection molded in the above-mentioned mold cavity. The spring pin device extends into the mold cavity. When the mold is opened, the spring pin device presses against the product to separate the product and the slider. During the production process, the mold is closed, and the plastic melt is injected from the gate, and the plastic melt is formed in the mold cavity. After cooling, the mold is separated, and plate A drives the front mold core and plate B drives the rear mold core to separate, and the inclined guide pillars push the slider to slide out. As the slider slides out, the pin mechanism presses against the product, separating it from the slider. When the slider reaches the mold opening position, the ejector plate ejects the product, completing demoulding. This prevents adhesion between the slider and the product, prevents product deformation caused by adhesion during demoulding, and avoids burrs and scratches on the product, improving product quality and ensuring production stability.

[0006] Furthermore, in the above-mentioned mold for preventing the slider from sticking, the shovel base is provided with a straight groove, the straight groove is vertically arranged on the inclined surface where the shovel base and the slider contact, and the bottom surface of the straight groove is vertically arranged.

[0007] Furthermore, in the mold for preventing the slider from sticking, in order to improve mold maintenance convenience and reduce maintenance costs, the slider includes a slider seat and an extension block. The side of the slider seat that abuts the shovel base is configured as an inclined surface corresponding to the shovel base, and the side of the slider seat away from the shovel base is connected to the extension block. The slider seat is connected to the top surface of the B plate, and the extension block is provided on the top surface of the rear mold core.

[0008] Furthermore, in the mold for preventing the slider from sticking to the mold, the spring device includes an ejector pin and a spring. The slider is provided with a through-groove, and the through-groove is provided with a stepped portion. The ejector pin and the spring are placed in the through-groove. One end of the ejector pin extends out of the slider seat and is placed in the straight groove. The end of the ejector pin away from the straight groove is flush with the side wall of the mold cavity, and the ejector pin is provided with a blocking portion. The spring is sleeved on the ejector pin, with one end of the spring abutting the blocking portion, and the end of the spring away from the blocking portion abutting the stepped portion. The spring pushes the ejector pin, and the blocking portion provided on the ejector pin abuts the side wall of the slider seat. During the demolding process, the shovel base moves upward, the slider slides out one end, and one end of the ejector pin moves along the straight groove. At this time, the product separates from the front mold core, the product separates from the slider (assuming it is the slider on the right side of the mold cavity), and the product moves with the slider on the left side of the mold cavity. The mold is continued to be opened, the ejector pin moves out of the straight groove, and the ejector pin contacts the inclined surface of the shovel base. The inclined surface of the shovel base pushes the ejector pin toward the mold cavity, and the ejector pin on the left side of the mold cavity separates the product from the slider. Continue to separate the mold, the shovel base and the ejector pin will separate, and the ejector pin will reset under the action of the spring, separating the ejector pin and the product. Conversely, if the product moves with the slider on the right side of the mold cavity, the ejector pin on the right side of the mold cavity will separate the product and the slider.

[0009] Furthermore, in the mold for preventing the slider from sticking, the through groove includes a first through groove and a second through groove, the first through groove being a through hole provided in the slider seat, the second through groove being provided in the extension block, and the step portion being provided in the second through groove.

[0010] Furthermore, in the above-mentioned mold for preventing the slider from sticking to the mold, in order to increase the contact area between the ejector pin and the product and prevent the ejector pin from damaging the product, the ejector pin is provided with a separation portion, the cross-section of the separation portion is rectangular, the separation portion is provided at the end of the ejector pin away from the shovel base, and the separation portion extends into the mold cavity.

[0011] Furthermore, in the mold for preventing the slider from sticking, in order to improve the mold maintenance convenience and reduce the maintenance cost, a slider insert is provided at one end of the extension block away from the slider seat, and the slider insert and the front mold core and the rear mold core together form a mold cavity.

[0012] Furthermore, in the above-mentioned mold for preventing the sliding block from sticking, there are two mold cavities, which are symmetrically arranged on both sides of the injection port, and the mold cavities are connected to the injection port through a runner.

[0013] Furthermore, in the mold to prevent the slider from sticking, the slider insert is polished to reduce friction between the product and the slider and facilitate demolding. This also increases the draft angle of the product in the slider area, reduces scratches and damage caused by friction, and improves the product's appearance quality.

[0014] Furthermore, in the above-mentioned mold for preventing the slider from sticking, an upper heat insulation board is connected to the side of the panel away from the bottom plate, and a lower heat insulation board is provided on the side of the bottom plate away from the panel.

[0015] It can be seen from the above technical solution that the utility model has the following beneficial effects: the mold of the utility model that prevents the slider from sticking to the mold is provided with a spring needle device to avoid the slider and the product from sticking, so as to make demolding smooth, avoid product deformation due to sticking during demolding, avoid burrs and scratches on the product, improve product quality, and ensure production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the mold for preventing the slider from sticking to the mold according to the utility model;

[0017] Figure 2 for Figure 1 A-direction sectional view shown;

[0018] Figure 3 for Figure 1 The cross-sectional view shown in the direction of B;

[0019] Figure 4 for Figure 2 A partial perspective view of the pin ejection device shown;

[0020] Figure 5 is a perspective view of the needle ejection device;

[0021] Figure 6 is a schematic diagram of the slider mechanism;

[0022] Figure 7 for Figure 6 The left side schematic diagram of the slider mechanism shown;

[0023] Figure 8 A schematic diagram of the structure of the product.

[0024] In the figure: 1. panel, 2. A plate, 21. front mold core, 22. shovel base, 221. straight groove, 23. inclined guide column, 3. B plate, 31. rear mold core, 32. slider, 321. slider seat, 322. extension block, 323. through groove, 3231. step portion, 3232. first through groove, 3233. second through groove, 324. slider insert, 33. pin device, 331. ejector pin, 3311. blocking portion, 3312. separation portion, 332. spring, 4. ejector pin plate, 5. bottom plate, 6. mold cavity, 7. upper heat insulation plate, 8. lower heat insulation plate. DETAILED DESCRIPTION

[0025] Example 1

[0026] like Figure 1-3The mold shown in the figure is a mold for preventing a slider from sticking to the mold, comprising a panel 1, a plate A 2, a plate B 3, a pin plate 4, and a bottom plate 5. The panel 1, plate A 2, plate B 3, pin plate 4, and bottom plate 5 are arranged in sequence. The side of plate A 2 close to plate B 3 is connected to a front mold core 21, and the side of plate B 3 close to plate A 2 is provided with a rear mold core 31. The front mold core 21 is provided with a shovel base 22 on both sides, and the shovel base 22 is connected to plate A 2. The shovel base 22 is connected to an inclined guide column 23. The rear mold core 31 is provided with a slider 32 on both sides, and the inclined guide column 23 extends into the inclined hole provided in the slider 32. The slider 32 is provided with a pin device 33. The front mold core 21, the rear mold core 31, and the slider 32 together constitute a mold cavity 6, and the product is injection molded in the above-mentioned mold cavity 6. The pin device 33 extends into the mold cavity 6. When the mold is opened, the pin device 33 presses against the product to separate the product and the slider 32. Two mold cavities 6 are provided, symmetrically located on either side of the injection port. These cavities are connected to the injection port via a runner. This allows two products to be produced in a single injection. To reduce friction between the product and the slider 32 and facilitate demolding, the slider insert 324 is polished. This also increases the draft angle of the product in the slider area, reducing scratches and damage caused by friction. An upper heat shield 7 is attached to the side of the panel 1 facing away from the base plate 5, while a lower heat shield 8 is attached to the side of the base plate 5 facing away from the panel 1.

[0027] During the production process, the mold is closed, and plastic melt is injected through the gate, forming a mold within the mold cavity 6. After cooling, the mold is separated. Plate A 2 drives the front mold core 21 and plate B 3 drives the rear mold core 31 to separate, and the inclined guide pillars 23 push the slider 32 out. As the slider 32 slides out, the pin mechanism 33 presses against the product, separating it from the slider. When the mold reaches the open position, the ejector plate 4 ejects the product, completing the demolding.

[0028] like Figure 4-5In the mold shown, which prevents the slider from sticking to the mold, the shovel base 22 is provided with a straight groove 221. The straight groove 221 is vertically arranged on the inclined surface where the shovel base 22 and the slider 32 contact each other, and the bottom surface of the straight groove 221 is arranged vertically. The ejector pin device 33 includes an ejector pin 331 and a spring 332. The slider 32 is provided with a through groove 323, which is provided with a stepped portion 3231. The ejector pin 331 and the spring 332 are placed in the through groove 323. One end of the ejector pin 331 extends out of the slider seat 321 and is placed in the straight groove 221. The end of the ejector pin 331 away from the straight groove 221 is flush with the side wall of the mold cavity 6. The ejector pin 331 is provided with a blocking portion 3311. Spring 332 is sleeved onto ejector pin 331. One end of spring 332 abuts against blocking portion 3311, while the end of spring 332 away from blocking portion 3311 abuts against stepped portion 3231. Spring 332 pushes ejector pin 331, and blocking portion 3311 on ejector pin 331 abuts against the sidewall of slider seat 321. Through-slot 323 includes a first through-slot 3232 and a second through-slot 3233. The first through-slot 3232 is a through-hole formed in slider seat 321. The second through-slot 3233 is provided in extension block 322, with stepped portion 3231 disposed within the second through-slot 3233. In order to increase the contact area between the ejector pin 331 and the product and prevent the ejector pin 331 from damaging the product, the ejector pin 331 is provided with a separation portion 3312. The separation portion 3312 has a rectangular cross-section. The separation portion 3312 is provided at the end of the ejector pin 331 away from the shovel base 22 and extends into the mold cavity 6.

[0029] During demolding, the shovel base 22 moves upward, the slider 32 slides out, and one end of the ejector pin 331 moves within the straight groove 221. This separates the product from the front mold core 21 and the slider 32 (assuming it's located on the right side of cavity 6). The product then moves with the slider 32 on the left side of cavity 6. As the mold continues to open, the ejector pin 331 moves out of the straight groove 221. It then contacts the inclined surface of the shovel base 22, pushing it toward cavity 6. Ejector pin 331 on the left side of cavity 6 separates the product from the slider. As the mold continues to part, the shovel base 22 and ejector pin 331 disengage, and the spring 332 releases the ejector pin 331, releasing it from the product. Conversely, if the product moves with the slider 32 on the right side of cavity 6, the ejector pin 331 on the right side of cavity 6 separates the product from the slider 32.

[0030] like Figure 6 In the mold shown to prevent the slider from sticking, the slider 32 includes a slider seat 321 and an extension block 322. The side of the slider seat 321 that abuts the shovel base 22 is configured with an inclined surface corresponding to the shovel base 22. The side of the slider seat 321 away from the shovel base 22 is connected to the extension block 322. The slider seat 321 is connected to the top surface of the B plate 3, and the extension block 322 is located on the top surface of the rear mold core 31. A slider insert 324 is provided on the end of the extension block 322 away from the slider seat 321. The slider insert 324, together with the front mold core 21 and the rear mold core 31, form the mold cavity 6.

[0031] The above embodiments are illustrative and intended to illustrate the technical concepts and features of the present invention so that those skilled in the art can understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A mold for preventing a slider from sticking to the mold, characterized by: The invention comprises a panel (1), an A plate (2), a B plate (3), an ejector plate (4), and a bottom plate (5); the panel (1), the A plate (2), the B plate (3), the ejector plate (4), and the bottom plate (5) are arranged in sequence; the A plate (2) is connected to a front mold core (21) on one side close to the B plate (3); the B plate (3) is provided with a rear mold core (31) on one side close to the A plate (2); shovel bases (22) are provided on both sides of the front mold core (21); the shovel bases (22) are connected to the A plate (2); and the shovel bases (22) are connected to the An inclined guide post (23) is provided on both sides of the rear mold core (31), and a slider (32) is provided. The inclined guide post (23) extends into an inclined hole provided in the slider (32); the slider (32) is provided with an elastic needle device (33); the front mold core (21), the rear mold core (31) and the slider (32) together constitute a mold cavity (6), and the product is injection molded in the above-mentioned mold cavity (6); the elastic needle device (33) extends into the mold cavity (6); when the mold is opened, the elastic needle device (33) presses the product to separate the product and the slider (32).

2. The mold for preventing the slider from sticking to the mold according to claim 1, characterized in that: The shovel base (22) is provided with a straight groove (221), the straight groove (221) is vertically arranged on the inclined surface where the shovel base (22) and the slider (32) contact, and the bottom surface of the straight groove (221) is vertically arranged.

3. The mold for preventing the slider from sticking to the mold according to claim 2, characterized in that: The slider (32) includes a slider seat (321) and an extension block (322); the side of the slider seat (321) abutting against the shovel base (22) is set as an inclined surface corresponding to the shovel base (22); the side of the slider seat (321) away from the shovel base (22) is connected to the extension block (322); the slider seat (321) is connected to the top surface of the B plate (3); and the extension block (322) is set on the top surface of the rear mold core (31).

4. The mold for preventing the slider from sticking to the mold according to claim 3, characterized in that: The ejector pin device (33) includes an ejector pin (331) and a spring (332); the slider (32) is provided with a through groove (323), and the through groove (323) is provided with a stepped portion (3231); the ejector pin (331) and the spring (332) are placed in the through groove (323); one end of the ejector pin (331) extends out of the slider seat (321) and is placed in the straight groove (221), the end of the ejector pin (331) away from the straight groove (221) is flush with the side wall of the mold cavity (6), and the ejector pin (331) is provided with a blocking portion (3311); the spring (332) is sleeved on the ejector pin (331), one end of the spring (332) abuts against the blocking portion (3311), and the end of the spring (332) away from the blocking portion (3311) abuts against the stepped portion (3231), and the spring (332) pushes the ejector pin (331).

5. The mold for preventing the slider from sticking to the mold according to claim 4, characterized in that: The through groove (323) comprises a first through groove (3232) and a second through groove (3233), wherein the first through groove (3232) is provided on the slider seat (321), and the first through groove (3232) is a through hole; the second through groove (3233) is provided on the extension block (322), and the stepped portion (3231) is provided in the second through groove (3233).

6. The mold for preventing the slider from sticking to the mold according to claim 4, characterized in that: The ejector pin (331) is provided with a separation portion (3312), the separation portion (3312) having a rectangular cross section, the separation portion (3312) being provided at an end of the ejector pin (331) away from the shovel base (22), and the separation portion (3312) extending into the mold cavity (6).

7. The mold for preventing the slider from sticking to the mold according to claim 3, characterized in that: A slider insert (324) is provided at one end of the extension block (322) away from the slider seat (321), and the slider insert (324) and the front mold core (21) and the rear mold core (31) together form a mold cavity (6).

8. The mold for preventing the slider from sticking to the mold according to claim 1, characterized in that: There are two mold cavities (6), which are symmetrically arranged on both sides of the injection port, and the mold cavities (6) are connected to the injection port through a flow channel.

9. The mold for preventing the slider from sticking to the mold according to claim 7, characterized in that: The slider insert (324) is polished.

10. The mold for preventing the slider from sticking to the mold according to claim 1, characterized in that: An upper heat insulation board (7) is connected to the side of the panel (1) away from the bottom board (5), and a lower heat insulation board (8) is provided on the side of the bottom board (5) away from the panel (1).

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