Mold with wear-resistant function for plastic processing

Abstract

The utility model discloses a wear-resistant mould for plastic processing, which belongs to the technical field of plastic processing moulds and comprises a lower mould, a base and a buffer component, a first groove is arranged at the bottom of the lower mould, the base extends into the first groove in a sliding manner, a second groove is arranged at the top of the base, and the buffer component extends into the second groove in a sliding manner. A plurality of buffering assemblies are installed between the first groove and the second groove, each buffering assembly comprises a double-face toothed plate, a connecting frame, gears and a torsional spring, the double-face toothed plates are fixedly installed in the first grooves, the connecting frames are fixedly installed in the second grooves, the gears are rotatably installed on the connecting frames, the number of the gears is two, and the torsional springs are arranged on the two sides of the double-face toothed plates. The two gears are symmetrically meshed with the two sides of the double-face toothed plate, and the torsional springs are installed between the gears and the inner wall of the connecting frame. And by arranging the buffer assembly, when the upper die descends and is closed with the lower die, the impact on the lower die can be reduced, the abrasion speed of the lower die is reduced, and the service life of the die is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic processing molds, and particularly relates to a mold with wear-resistant function for plastic processing. Background Technique

[0002] Plastic processing, also known as plastic shaping processing, is the general term for various processes that convert synthetic resins or plastics into plastic products. It is a relatively large production department in the plastic industry. Plastic processing generally includes plastic batching, shaping, machining, joining, finishing, and assembly, etc. The latter four processes are carried out after the plastic has been formed into products or semi-products, and are also known as plastic secondary processing.

[0003] In the process of plastic processing, the process of injection molding and fixed mold forming is mostly adopted. During processing, first, the upper mold descends and closes with the lower mold, and then the molten plastic is injected into the cavity between the upper mold and the lower mold. After the plastic part is formed in the cavity, the upper mold is lifted to take out the plastic part.

[0004] In the process of realizing the above, the inventor found that there are at least the following problems in this technology: during the long-term use of the mold, due to the easy occurrence of violent collisions when the upper and lower molds are closed, the mold is easily severely worn due to long-term impact, reducing the service life of the mold. Content of the Utility Model

[0005] The purpose of the utility model is to provide a mold with wear-resistant function for plastic processing to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a mold with wear-resistant function for plastic processing, including a lower mold, a base, and a buffer assembly. A first groove is opened at the bottom of the lower mold, the base slides and extends into the first groove, a second groove is opened at the top of the base, and a plurality of buffer assemblies are installed between the first groove and the second groove;

[0007] The buffer assembly includes a double-sided toothed plate, a connecting frame, a gear, and a torsion spring. The double-sided toothed plate is fixedly installed in the first groove, the connecting frame is fixedly installed in the second groove, the gear is rotatably installed on the connecting frame, there are two gears, and the two gears are symmetrically engaged on both sides of the double-sided toothed plate. The torsion spring is installed between the gear and the inner wall of the connecting frame.

[0008] As a preferred implementation method, support columns are fixedly connected to both sides of the base, first chutes are opened on both sides of the bottom of the lower mold, the upper ends of the support columns slide and extend into the first chutes, and first springs are sleeved on the support columns.

[0009] As a preferred implementation method, a first limit block is provided at one end of the support column located in the first chute.

[0010] As a preferred embodiment, second sliding grooves are provided at the four corners of the top of the lower mold, second springs are arranged in the second sliding grooves, and the upper ends of the second springs are abutted against support rods.

[0011] As a preferred embodiment, a second limiting block is arranged at one end of the support rod located in the second sliding groove.

[0012] As a preferred embodiment, mounting holes are provided at the four corners of the base.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] For the mold with wear-resistant function for plastic processing, by arranging a buffer assembly, when the upper mold descends and closes with the lower mold, the upper mold will press down and impact the lower mold. After the lower mold is stressed, it can drive the double-sided toothed plate to descend. The double-sided toothed plate will drive the gear to rotate, so that the gear drives the torsion spring to twist. By using the reaction force generated by the torsion of the torsion spring, the impact received by the lower mold can be buffered and reduced, thereby reducing the impact on the lower mold, slowing down the wear speed of the lower mold, and prolonging the service life of the mold;

[0015] For the mold with wear-resistant function for plastic processing, through the cooperation of the second sliding groove, the second spring and the support rod, before the upper mold descends and contacts the lower mold, the upper mold first contacts the support rod and presses down on the support rod, causing the support rod to squeeze the second spring to deform and buffer and support the upper mold, reducing the impact caused by the upper mold on the lower mold, and thus slowing down the impact friction generated when the upper mold and the lower mold contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the sectional structural schematic diagram of the present utility model;

[0018] Figure 3 is the side view structural schematic diagram of the buffer assembly of the present utility model.

[0019] In the figure: 1, lower mold; 11, first groove; 12, second sliding groove; 13, second spring; 14, support rod; 15, second limiting block; 2, base; 21, second groove; 22, support column; 23, first sliding groove; 24, first spring; 25, first limiting block; 26, mounting hole; 3, buffer assembly; 31, double-sided toothed plate; 32, connecting frame; 33, gear; 34, torsion spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes the present utility model in conjunction with embodiments.

[0021] The following embodiments are used to illustrate the present utility model, but cannot be used to limit the protection scope of the present utility model. The conditions in the embodiments can be further adjusted according to specific conditions. Under the premise of the concept of the present utility model, simple improvements to the method of the present utility model all belong to the scope of protection required by the present utility model.

[0022] Please refer to Figures 1-3 , the present utility model provides a mold with wear-resistant function for plastic processing, including a lower mold 1, a base 2 and a buffer assembly 3. Installation holes 26 are provided at the four corners of the base 2, and the base 2 can be fixed through the installation holes 26. A first groove 11 is provided at the bottom of the lower mold 1, and the sliding part of the base 2 extends into the first groove 11. A second groove 21 is provided at the top of the base 2, and a plurality of buffer assemblies 3 are installed between the first groove 11 and the second groove 21. The buffer assembly 3 includes a double-sided toothed plate 31, a connecting frame 32, a gear 33 and a torsion spring 34. The double-sided toothed plate 31 is fixedly installed in the first groove 11, the connecting frame 32 is fixedly installed in the second groove 21, the gear 33 is rotatably installed on the connecting frame 32, there are two gears 33, and the two gears 33 are symmetrically meshed on both sides of the double-sided toothed plate 31. The torsion spring 34 is installed between the gear 33 and the inner wall of the connecting frame 32. By setting the buffer assembly 3, when the upper mold descends and closes with the lower mold 1, the upper mold will press down and impact the lower mold 1. After the lower mold 1 is stressed, it can drive the double-sided toothed plate 31 to descend. The double-sided toothed plate 31 will drive the gear 33 to rotate, so that the gear 33 drives the torsion spring 34 to twist. Using the reaction force generated by the torsion of the torsion spring 34, the impact received by the lower mold 1 can be buffered and reduced, thereby reducing the impact on the lower mold 1 and slowing down the wear speed of the lower mold 1, and prolonging the service life of the mold.

[0023] Refer to Figure 1 and Figure 2 , both sides of the base 2 are fixedly connected with support columns 22. First sliding grooves 23 are provided on both sides of the bottom of the lower mold 1. The upper ends of the support columns 22 slide and extend into the first sliding grooves 23, and a first spring 24 is sleeved on the support columns 22. Through the cooperation of the support columns 22, the first sliding grooves 23 and the first spring 24, a guiding and limiting effect can be achieved on the lower mold 1, and the lower mold 1 can be prevented from skewing when stressed. After the lower mold 1 is stressed, the lower mold 1 will squeeze the first spring 24, causing the first spring 24 to deform and further buffer and reduce the impact force; a first limiting block 25 is provided at one end of the support column 22 located in the first sliding groove 23. The support column 22 can be limited by the first limiting block 25 to prevent the support column 22 from detaching from the first sliding groove 23.

[0024] Refer to Figure 1 and Figure 2, second sliding grooves 12 are provided at the four corners of the top of the lower die 1. A second spring 13 is arranged in the second sliding groove 12. The upper end of the second spring 13 abuts against a support rod 14. Through the cooperation of the second sliding groove 12, the second spring 13 and the support rod 14, before the upper die descends and contacts the lower die 1, the upper die first contacts the support rod 14 and presses down on the support rod 14, causing the support rod 14 to squeeze the second spring 13 to deform and buffer and support the upper die, thereby slowing down the impact friction generated when the upper die contacts the lower die 1; a second limit block 15 is arranged at one end of the support rod 14 located in the second sliding groove 12, and the second limit block 15 can limit the support rod 14 to prevent the support rod 14 from disengaging from the second sliding groove 12.

[0025] The working principle and usage process of the present utility model: First, by providing the buffer assembly 3, when the upper die descends and closes with the lower die 1, the upper die will press down and impact the lower die 1. After the lower die 1 is stressed, it can drive the double-sided toothed plate 31 to descend. The double-sided toothed plate 31 will drive the gear 33 to rotate, causing the gear 33 to drive the torsion spring 34 to twist. By using the reaction force generated by the torsion of the torsion spring 34, the impact received by the lower die 1 can be buffered and reduced. Through the cooperation of the support column 22, the first sliding groove 23 and the first spring 24, a guiding and limiting effect can be achieved on the lower die 1, which can prevent the lower die 1 from skewing when stressed. Moreover, after the lower die 1 is stressed, the lower die 1 will squeeze the first spring 24, causing the first spring 24 to deform and further buffer and reduce the impact force, thereby reducing the impact received by the lower die 1, slowing down the wear speed of the lower die 1, and extending the service life of the mold.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mold with wear-resistant function for plastic processing, comprising a lower mold (1), a base (2) and a buffer assembly (3), characterized in that: A first groove (11) is formed at the bottom of the lower die (1), the sliding part of the base (2) extends into the first groove (11), a second groove (21) is formed at the top of the base (2), and a plurality of buffer components (3) are installed between the first groove (11) and the second groove (21). The buffer component (3) includes a double-sided toothed plate (31), a connecting frame (32), a gear (33) and a torsion spring (34). The double-sided toothed plate (31) is fixedly installed in the first groove (11), the connecting frame (32) is fixedly installed in the second groove (21), the gear (33) is rotatably installed on the connecting frame (32), there are two gears (33), and the two gears (33) are symmetrically engaged on both sides of the double-sided toothed plate (31). The torsion spring (34) is installed between the gear (33) and the inner wall of the connecting frame (32).

2. A mold with wear-resistant function for plastic processing according to claim 1, characterized in that: Support columns (22) are fixedly connected to both sides of the base (2). First sliding grooves (23) are formed on both sides of the bottom of the lower die (1). The upper ends of the support columns (22) slide and extend into the first sliding grooves (23), and a first spring (24) is sleeved on the support columns (22).

3. The mold with wear-resistant function for plastic processing according to claim 2, wherein: A first limiting block (25) is provided at one end of the support column (22) located in the first sliding groove (23).

4. A mold with wear-resistant function for plastic processing according to claim 1, characterized in that: Second sliding grooves (12) are formed at the four corners of the top of the lower die (1). Second springs (13) are arranged in the second sliding grooves (12), and the upper ends of the second springs (13) abut against support rods (14).

5. A mold with wear-resistant function for plastic processing according to claim 4, characterized in that: A second limiting block (15) is provided at one end of the support rod (14) located in the second sliding groove (12).

6. A mold with wear-resistant function for plastic processing according to claim 1, characterized in that: Mounting holes (26) are formed at the four corners of the base (2).

Images