A plastic parts processing mold that facilitates unloading.

Abstract

This utility model relates to the field of processing molds and discloses a plastic part processing mold for easy unloading, including a rear mold and a front mold. The rear mold has guide pillars at each of its four corners facing the front mold to guide the movement direction of the front mold. The front mold is slidably connected to the outside of the four guide pillars. The upper and front sides of the rear mold are equipped with unloading mechanisms for quickly unloading the plastic part. This utility model, by driving the front mold to move and separate it from the rear mold, causes multiple linkage rods to move. Multiple sliding blocks, guided by these linkage rods, perform horizontal and vertical linear movements, thereby separating the sliding blocks from the plastic part. The plastic part is then ejected by ejector pins on the processing mold, completing the unloading of the plastic part. This method is not only suitable for molding complex structures such as deep cavities or thin walls with grooves, but also facilitates the unloading of plastic parts from the processing mold.

Description

Technical Field

[0001] This utility model relates to the field of processing mold technology, specifically to a plastic parts processing mold that facilitates unloading. Background Technology

[0002] A mold is a cavity tool with a certain shape and size. It is used in conjunction with various systems or auxiliary mechanisms inside the mold to fill various high-temperature liquid materials (such as plastics or metal alloys) into the mold cavity, thereby producing industrial parts with specific shapes, sizes, functions and qualities. Typically, a mold consists of two parts: an upper mold and a lower mold.

[0003] In existing technologies, after plastic parts are molded, an ejection mechanism is used to eject the parts from the mold cavity. A search revealed Chinese patent CN212888677U, which discloses an injection mold for processing plastic parts with an automatic ejection structure. By adopting a novel structural design, the device is equipped with a mechanical limiting structure, which facilitates the control of the opening and closing states between the graded injection molds through a mechanical transmission structure. The device is also equipped with a discharge ejection structure, in which a motor controls the rotation of the central rotating shaft, which, under the action of the transmission structure, drives the internal rotating shafts on both the upper and lower sides to rotate simultaneously in the same direction. This causes the top plate to be threadedly connected to the push plate on the side through a threaded rod and threaded groove. Then, the sub-injection mold is controlled to move to the left, and the plastic product attached to the outside of the mold block is automatically ejected and discharged under the limiting and pushing action of the push plate, which can quickly remove the injection-molded plastic product from the mold.

[0004] While existing technologies can automatically eject molded plastic parts, they have some shortcomings in practical applications. Generally, plastic products are ejected by a unidirectional drive, but the shapes of plastic products vary, especially complex plastic parts with grooves, bosses, deep cavities, or thin walls. This technology is not well-suited for the production of complex plastic parts. Therefore, a plastic part processing mold that facilitates unloading is proposed to solve the above problems. Utility Model Content

[0005] Based on the above description, this utility model provides a plastic part processing mold that facilitates unloading, in order to solve the problem that plastic products are generally pushed out by a unidirectional drive, but the shapes of plastic products are different, especially the complex structures of plastic parts such as deep cavities or thin walls with grooves, bosses, etc., which cannot be well applied to the production of complex structure plastic parts.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a plastic part processing mold that facilitates unloading, including a rear mold and a front mold; The rear mold is provided with a guide post at each of the four corners of the side facing the front mold to guide the movement direction of the front mold. The front mold is slidably connected to the outside of the four guide posts. The upper and front sides of the rear mold are provided with unloading mechanisms for quickly unloading plastic parts. The unloading mechanism includes a U-shaped mounting block fixed on the upper and front sides of the rear mold, a T-shaped groove on the upper surface of the U-shaped mounting block, two stepped grooves on one side wall of the rear mold, sliding grooves on opposite sides of the inner walls of the U-shaped mounting block, multiple locking blocks, through holes on the inner bottom wall of the U-shaped mounting block, and a linkage component.

[0007] The above technical solution involves driving the front mold to move, separating it from the rear mold. The movement of the front mold can drive multiple linkage rods to move, and multiple sliding blocks can move horizontally and vertically under the guidance of the linkage rods. This allows the multiple sliding blocks to separate from the plastic part, and then the ejector pins on the mold can push the plastic part out. This solution is not only suitable for molding plastic parts with complex structures such as deep cavities or thin walls with grooves, but also facilitates the removal of the plastic part from the mold, greatly improving its practicality.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the front mold has four receiving slots on the side facing the rear mold, and the other end of the guide post is located in the receiving slot and is not separated from each other. The four guide posts correspond one-to-one with the four receiving slots.

[0010] Through the above technical solution, the four guide pillars can limit the horizontal movement of the front mold when the front mold and the rear mold are separated.

[0011] Furthermore, both the T-groove and the slide extend to the side of the rear mold facing the front mold, and the inner bottom wall of the T-groove is fixed with wear-resistant material.

[0012] The wear-resistant material provided by the above technical solution can protect the service life of the U-shaped mounting block and prevent wear caused by long-term friction between the sliding block and the U-shaped mounting block.

[0013] Furthermore, multiple locking blocks are fixed to the slide groove by countersunk bolts. The width of the locking block is greater than the width of the slide groove, and a space is formed between the locking block and the T-slot to restrict the movement of the linkage.

[0014] The above technical solution allows both ends of the locking blocks to extend out of the sliding groove. As the linkage moves, both ends of the linkage move within the space between the locking blocks and the T-shaped groove, which can limit the vertical direction of the linkage and ensure that the linkage can only perform horizontal linear movement.

[0015] Furthermore, the linkage includes four sliding blocks, an oblique hole on the upper surface of the sliding block, and a linkage rod disposed in the oblique hole; The other ends of the four linkage rods pass through their corresponding through holes and extend to the bottom of the U-shaped mounting block and the stepped groove.

[0016] Through the above technical solution, the opposite side of the four sliding blocks is used to form grooves and bosses on the plastic processing parts.

[0017] Furthermore, an arc-shaped groove is provided on one side of the linkage rod, and an arc-shaped block is fixed in the arc-shaped groove. The arc-shaped block is fixed to the front mold by countersunk bolts.

[0018] With the above technical solution, the linkage rod is fixed to the front mold. When the front mold moves, it will drive the linkage rod to move, thereby causing multiple sliding blocks to move horizontally and vertically, so that the sliding blocks are separated from the plastic processing part.

[0019] Furthermore, a gating system is provided on the right side of the front mold.

[0020] Through the above technical solution, the gating system is a passage on the mold from the injection molding machine nozzle to the mold cavity, which can inject plastic raw materials into the mold cavity through the injection molding machine to form the mold.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: By driving the front mold to move and separating it from the rear mold, the movement of the front mold can drive multiple linkage rods to move. Multiple sliding blocks, guided by the linkage rods, perform horizontal and vertical linear movements respectively, thereby separating the multiple sliding blocks from the plastic part. Then, the ejector pins on the processing mold push the plastic part out, thus completing the unloading of the plastic part. This method is not only suitable for molding plastic parts with complex structures such as deep cavities or thin walls with grooves, but also facilitates the removal of plastic parts from the processing mold, greatly improving its practicality. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of a plastic part processing mold that facilitates unloading, provided for an embodiment of this utility model; Figure 2 This is a side view of the front mold structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the unloading mechanism according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the unloading mechanism according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the linkage rod, arc groove, and arc block in an embodiment of this utility model.

[0023] Figure 6 This is a top view schematic diagram of the workpiece and unloading mechanism in an embodiment of this utility model.

[0024] Reference numerals: 1. Rear mold; 2. Front mold; 3. Guide pillar; 4. Unloading mechanism; 41. U-shaped mounting block; 42. T-shaped groove; 43. Stepped groove; 44. Sliding groove; 45. Locking block; 46. Through hole; 47. Sliding block; 48. Inclined hole; 49. Linkage rod; 410. Arc groove; 411. Arc block; 5. Gating system. Detailed Implementation

[0025] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0027] Example: Reference Figure 1 It includes a rear mold 1 and a front mold 2; the rear mold 1 is provided with a guide post 3 at each of the four corners of the side facing the front mold 2 to guide the movement direction of the front mold 2. The front mold 2 is slidably connected to the outside of the four guide posts 3. The upper and front sides of the rear mold 1 are provided with unloading mechanisms 4 for quickly unloading plastic parts.

[0028] The front mold 2 has four receiving slots on the side facing the rear mold 1. The other end of the guide post 3 is located in the receiving slot and is not separated from each other. The four guide posts 3 correspond one-to-one with the four receiving slots. When the mold is opened, the front mold 2 can make horizontal linear movement as it moves away from the rear mold 1 due to the restriction of the four guide posts 3. The movement distance of the front mold 2 can also be limited.

[0029] refer to Figure 2 , Figure 3 , Figure 4 and Figure 6 The unloading mechanism 4 includes a U-shaped mounting block 41 fixed on the upper and front sides of the rear mold 1, a T-shaped groove 42 opened on the upper surface of the U-shaped mounting block 41, two stepped grooves 43 opened on one side wall of the rear mold 1, a sliding groove 44 opened on the opposite side of the two side walls of the inner cavity of the U-shaped mounting block 41, multiple locking blocks 45, a through hole 46 opened on the inner bottom wall of the U-shaped mounting block 41, and a linkage component.

[0030] The T-slot 42 and the slide 44 both extend to the side of the rear mold 1 facing the front mold 2. The inner bottom wall of the T-slot 42 is fixed with wear-resistant material. Setting the inner bottom wall of the U-shaped mounting block 41 as wear-resistant material can prevent the U-shaped mounting block 41 from being worn quickly due to friction between the sliding block 47 and the U-shaped mounting block 41, thus protecting the service life of the U-shaped mounting block 41.

[0031] It should be noted that multiple locking blocks 45 are fixed to the slide groove 44 by countersunk bolts. The width of the locking block 45 is greater than the width of the slide groove 44. A space is formed between the locking block 45 and the T-shaped groove 42 to restrict the movement of the linkage. Two locking blocks 45 in the U-shaped mounting block 41 extend out of the two T-shaped grooves 42 and are located on the upper side of the linkage, so that the two ends of the linkage can move between the locking block 45 and the T-shaped groove 42, thereby limiting the movement of the linkage.

[0032] In use, after the plastic part is formed, the front mold 2 is moved away from the rear mold 1 by driving the front mold 2. At this time, the front mold 2 moves to the right outside the four guide pillars 3. The movement of the front mold 2 can drive the arc block 411 and the linkage rod 49 to move. At this time, the bottom of the linkage rod 49 moves in the inclined hole 48. The two sliding blocks 47 in the two U-shaped mounting blocks 41 will move away from the plastic part as the linkage rod 49 moves.

[0033] In addition, the linkage includes four sliding blocks 47, an oblique hole 48 opened on the upper surface of the sliding block 47, and a linkage rod 49 provided in the oblique hole 48; the other end of the four linkage rods 49 respectively passes through the corresponding through hole 46 and extends to the bottom of the U-shaped mounting block 41 and the stepped groove 43.

[0034] In use, the two sliding blocks 47 in the two stepped grooves 43 move vertically along with the movement of the linkage rod 49 until the two sliding blocks 47 are completely separated from the plastic workpiece. Then, the ejector pin in the processing mold can be used to push the plastic workpiece out of the mold core, thus completing the unloading process of the plastic workpiece.

[0035] refer to Figure 5 An arc-shaped groove 410 is provided on one side of the linkage rod 49. An arc-shaped block 411 is fixed in the arc-shaped groove 410. The arc-shaped block 411 is fixed to the front mold 2 by countersunk bolts. The movement of the front mold 2 drives the movement of the arc-shaped block 411. The movement of the arc-shaped block 411 can cause the linkage rod 49 to move with the movement of the front mold 2, which further drives the movement of the sliding block 47. Thus, the positions of multiple sliding blocks 47 can be adjusted, so that multiple sliding blocks 47 can be separated from the plastic processing parts, making it convenient for workers to use.

[0036] It should be noted that by driving the front mold 2 to move, it separates from the rear mold 1. The movement of the front mold 2 can drive multiple linkage rods 49 to move. Multiple sliding blocks 47 move horizontally and vertically under the guidance of multiple linkage rods 49, thereby separating multiple sliding blocks 47 from the plastic part. Then, the ejector pins on the processing mold push the plastic part out. This is not only suitable for molding plastic parts with complex structures such as deep cavities or thin walls with grooves, but also facilitates the removal of plastic parts from the processing mold, thus improving the applicability of the processing mold.

[0037] refer to Figure 1 The gating system 5 is provided on the right side of the front mold 2.

[0038] The gating system 5 is used to guide the molten plastic from the injection molding machine into the mold cavity. The raw material of the plastic part can be introduced into the mold cavity through the gating system 5.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic part processing mold for easy unloading, comprising a rear mold (1) and a front mold (2); characterized in that The rear mold (1) is provided with a guide post (3) at each of the four corners of the side facing the front mold (2) to guide the movement direction of the front mold (2). The front mold (2) is slidably connected to the outside of the four guide posts (3). The upper and front sides of the rear mold (1) are provided with unloading mechanisms (4) for quickly unloading plastic parts. The unloading mechanism (4) includes a U-shaped mounting block (41) fixed on the upper and front sides of the rear mold (1), a T-shaped groove (42) opened on the upper surface of the U-shaped mounting block (41), two stepped grooves (43) opened on one side wall of the rear mold (1), a sliding groove (44) opened on the opposite side of the two side walls of the inner cavity of the U-shaped mounting block (41), multiple locking blocks (45), a through hole (46) opened on the inner bottom wall of the U-shaped mounting block (41), and a linkage component.

2. The plastic part processing mold with easy ejection according to claim 1, wherein, The front mold (2) has four receiving slots on the side facing the rear mold (1), and the other end of the guide post (3) is located in the receiving slot and is not separated from each other. The four guide posts (3) correspond one-to-one with the four receiving slots.

3. The plastic part processing mold with easy ejection according to claim 1, wherein, The T-groove (42) and the slide (44) both extend to the side of the rear mold (1) facing the front mold (2), and the inner bottom wall of the T-groove (42) is fixed with wear-resistant material.

4. The plastic part processing mold with easy ejection according to claim 1, wherein, Multiple locking blocks (45) are fixed to the slide groove (44) by countersunk bolts. The width of the locking block (45) is greater than the width of the slide groove (44). A space is formed between the locking block (45) and the T-shaped groove (42) to restrict the movement of the linkage.

5. The plastic part processing mold with easy ejection according to claim 1, wherein, The linkage includes four sliding blocks (47), an oblique hole (48) opened on the upper surface of the sliding block (47), and a linkage rod (49) provided in the oblique hole (48); The other ends of the four linkage rods (49) pass through their corresponding through holes (46) and extend to the bottom of the U-shaped mounting block (41) and the stepped groove (43).

6. The plastic part processing mold with easy ejection of claim 5, wherein, An arc-shaped groove (410) is provided on one side of the linkage rod (49), and an arc-shaped block (411) is fixed in the arc-shaped groove (410). The arc-shaped block (411) is fixed to the front mold (2) by countersunk bolts.

7. The plastic part processing mold with easy ejection according to claim 1, wherein, A gating system (5) is provided on the right side of the front mold (2).

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