Plastic product mold

Abstract

The utility model discloses a plastic product mold which comprises a lower mold set, and the lower mold set comprises a lower mold frame, an ejection system and a lower mold core. The injection mold further comprises a lifting adjusting mechanism used for controlling the height of the ejection system, accessories of the ejection system can exit from the lower mold core by adjusting the height of the ejection system to be reduced, or the accessories of the ejection system can extend into the lower mold core by adjusting the height of the ejection system to be reduced. According to the utility model, the ejection system does not need to be disassembled when the lower mold core is maintained or replaced, and the lower mold core can be quickly disassembled or assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of mold design and manufacturing, in particular to a plastic product mold. Background Art

[0002] There are many types of plastic products. Taking plastic shell products such as wall sockets and wall switches as an example, their product structure generally includes panels, covers, frames, bases and other structures. These products are generally formed by injection molds.

[0003] Injection molds are generally composed of a mold frame and a mold core. During the production process, if the mold fails and causes product defects, it needs to be disassembled and repaired. Generally speaking, most failures occur in the mold core structure. Therefore, the mold core mainly needs to be disassembled, repaired or replaced.

[0004] However, due to the complexity of the mold structure itself, disassembling the mold core requires disassembling multiple parts, such as the mold frame, the ejection system and other related structures. This makes the entire maintenance process relatively long, the workload is large, the maintenance cycle is long, and production efficiency is affected. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a plastic product mold.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plastic product mold, comprising a lower mold assembly, wherein the lower mold assembly comprises a lower mold frame, an ejection system, and a lower mold core;

[0008] It also includes a lifting and adjusting mechanism for controlling the height of the ejection system, so that the accessories of the ejection system can be withdrawn from or extended into the lower mold core by adjusting the height of the ejection system;

[0009] The lifting adjustment mechanism includes: an adjustment plate, and the adjustment plate is arranged between the bottom needle plate of the ejection system and the bottom plate of the lower mold frame.

[0010] Preferably, the bottom needle plate and / or the bottom plate are provided with a slide groove for the adjustment plate to slide laterally, and the adjustment plate is provided with a first guide structure.

[0011] The lifting and adjusting mechanism also includes a guide member, which is fixed. The adjusting plate is provided with a first guide structure, and the guide member is provided with a second guide structure. The first guide structure and the second guide structure cooperate to make the adjusting plate rise or fall when sliding along the sliding groove.

[0012] Preferably, the first guide structure is a guide groove provided on the side walls on both sides of the adjustment plate, and the second guide structure is a guide pin provided on the guide member and inserted into the guide groove.

[0013] Preferably, the guide groove includes a translation section arranged at a low position on the side wall of the adjustment plate, a rising section connected to the translation section and gradually rising to a high position, and a holding section connected to the highest position of the rising section.

[0014] Preferably, a plurality of guide grooves are provided in the sliding direction of the adjustment plate, and the number of the guide members corresponds to the number of the guide grooves.

[0015] Preferably, the slide groove includes a first slide groove arranged on the bottom needle plate, at least one first convex portion and a first concave portion are arranged in the first slide groove, and the side of the adjustment plate facing the bottom needle plate is provided with a second concave portion for avoiding the first convex portion, and a second convex portion corresponding to the first concave portion.

[0016] Preferably, a first limiting groove is provided on the first convex portion, and a first limiting rib corresponding to the first limiting groove is provided on the second concave portion.

[0017] Preferably, the slide groove includes a second slide groove arranged on the base plate, at least one third protrusion and a third recess are arranged in the second slide groove, and the side of the adjustment plate facing the base plate is provided with a fourth recess for avoiding the third protrusion, and a fourth protrusion corresponding to the third recess.

[0018] Preferably, the third convex portion is provided with a second limiting groove, and the fourth concave portion is provided with a second limiting rib corresponding to the second limiting groove.

[0019] Preferably, force-applying auxiliary members are provided at both ends or one end of the adjustment plate, and the force-applying auxiliary members are detachably connected or fixedly connected to the adjustment plate.

[0020] Compared with existing molds, the plastic product mold of this utility model has the following features:

[0021] This plastic product mold features a lifting mechanism at the bottom of the ejector system. This mechanism adjusts the ejector system's height, allowing accessories such as the ejector pin and bevel ejector to either exit or reenter the lower mold core. Once the ejector pin and bevel ejector are released from the lower mold core, the lower mold core can be removed directly from the lower mold plate of the lower mold frame, eliminating the need to disassemble the lower mold frame and ejector system. When the ejector system is raised, the ejector pin and bevel ejector are reentered, allowing the mold to function normally.

[0022] Furthermore, the lifting and adjusting mechanism adopts the combination of an adjusting plate and a guide member. The adjusting plate and the ejection system that cooperates with it can be raised or lowered by sliding the adjusting plate. This adjustment method is simple and fast to operate, and is convenient for the rapid disassembly, replacement or maintenance of the lower mold core. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a plastic product mold according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of a plastic product mold according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the coordinated structure of the ejection system and the adjustment mechanism of the embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the adjustment plate of the embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the matching structure of the adjustment plate, bottom needle plate and bottom plate in an embodiment of the utility model;

[0028] Figure 6 This is a schematic diagram of the matching structure of the adjustment plate, bottom needle plate and bottom plate in an embodiment of the utility model (from another perspective).

[0029] In the picture:

[0030] Lower mold frame 1, ejection system 2, lower mold core 3, lifting adjustment mechanism 4, upper mold frame 5, upper mold core 6;

[0031] Bottom plate 11, lower mold foot 12, lower mold plate 13, third convex portion 112, third concave portion 113, second limiting groove 114;

[0032] Bottom needle plate 21, top needle plate 22, ejector pin 23, inclined ejector pin 24, first convex portion 212, first concave portion 213, first limiting groove 214;

[0033] Adjustment plate 41, guide member 42, first guide structure 411 (guide groove), second guide structure 421 (guide pin), translation section 411a, rising section 411b, retaining section 411c, second protrusion 412, second recess 413, fourth recess 414, fourth protrusion 415, second limiting rib 417, first limiting rib 419. DETAILED DESCRIPTION

[0034] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the plastic product mold of the present invention. The plastic product mold of the present invention is not limited to the description of the following embodiments.

[0035] The plastic product mold of this embodiment is primarily designed for molding the plastic housings of products such as wall switches and wall sockets. Wall switches and wall sockets have similar structural components, primarily consisting of a faceplate, cover, and base. Some products also include a midframe or mounting bracket. Of course, the plastic product mold of this embodiment can also be used for other plastic products, not just the switch-type plastic housings mentioned in this embodiment.

[0036] The utility model provides a plastic product mold, such as Figure 1 As shown in Figure 3, it includes an upper die set and a lower die set. Generally speaking, the upper die set is a static die set and the lower die set is a dynamic die set. Figure 1 As shown, the upper mold assembly generally includes an upper mold frame 5 and an upper mold core 6, and the lower mold assembly includes a lower mold frame 1, an ejection system 2 and a lower mold core 3; it also includes a lifting adjustment mechanism 4 for controlling the height of the ejection system 2, by adjusting the height of the ejection system 2 so that the accessories of the ejection system 2 can exit the lower mold core 3, or by adjusting the height of the ejection system 2 so that the accessories of the ejection system 2 can extend into the lower mold core 3.

[0037] In this embodiment, the accessories of the ejection system 2 include ejector pins, inclined ejectors and other related accessories that are inserted into the lower mold core 3 .

[0038] In this embodiment, the upper mold frame 5 includes an upper mold plate 52 and an upper fixed plate 51, with the upper mold core 6 disposed within the upper mold plate 52. The lower mold frame 1 includes a lower mold plate 13, a lower mold foot 12, and a base plate 11. The lower mold core 3 is disposed within the lower mold plate 13, and the ejector system 2 is disposed between the lower mold plate 13 and the base plate 11. The tops of the ejector pins, lifters, and other accessories of the ejector system 2 are located within the lower mold core 13 during normal mold use.

[0039] In this embodiment, the ejection system 2 includes: a bottom needle plate 21, a surface needle plate 22, ejector pins 23, an inclined ejector 24, and a return pin structure.

[0040] In this embodiment, the lifting adjustment mechanism 4 is arranged at the lower part of the ejection system 2 and is used to adjust the lifting of the entire ejection system 2.

[0041] like Figure 1 -4, the lifting adjustment mechanism 4 of this embodiment includes: an adjustment plate 41 and a guide member 42, the adjustment plate 41 is arranged between the bottom needle plate 21 of the ejection system 2 and the bottom plate 11 of the lower mold frame 1, the bottom needle plate 21 and / or the bottom plate 11 are provided with a slide groove for the horizontal sliding of the adjustment plate 41, and the guide member 42 is fixedly arranged and can be fixed on the lower mold frame 1, specifically, can be fixed on the bottom plate 11.

[0042] Furthermore, the adjustment plate 41 is provided with a first guide structure 411 , and the guide member 42 is provided with a second guide structure 421 , and the adjustment plate 41 rises or falls when sliding along the slide groove through the cooperation of the first guide structure 411 and the second guide structure 421 .

[0043] As a specific embodiment, the first guide structure 411 is a guide groove provided on the side walls of both sides of the adjustment plate 41 , and the second guide structure 421 is a guide pin provided on the guide member 42 and inserted into the guide groove.

[0044] As an alternative embodiment, the first guide structure 411 may also be a guide pin provided on the side walls of the adjustment plate 41 , and the second guide structure 421 may be a guide groove provided on the guide member 42 and cooperating with the guide pin.

[0045] In this embodiment, the guide groove includes a translation section 411a provided at a lower position on the side wall of the adjustment plate 41, a rising section 411b connected to the translation section 411a and gradually rising to a higher position, and a holding section 411c connected to the highest position of the rising section 411b. Figure 2 As shown in Figure 4, when the guide member 42 is located in the translation section 411a, the adjustment plate 41 is embedded in the slide groove of the bottom plate 11. At this time, the adjustment plate 41 is in a low position, the corresponding ejection system 2 is in a low position, and accessories such as ejectors and bevel ejectors are removed from the lower mold core 3. When the adjustment plate 41 is driven to slide by external force, the adjustment plate 41 can be driven to rise upward through the rising section 411b until it reaches the holding section 411c. At this time, the adjustment plate 41 is embedded in the slide groove of the bottom needle plate 21, the adjustment plate 41 is in a high position, the ejection system 2 is also in a high position, and accessories such as ejectors and bevel ejectors are inserted into the lower mold core 3.

[0046] When the lower mold core 3 needs to be disassembled, replaced, or repaired, the adjustment plate 41 can be adjusted to a low position to lower the ejection system 2, so that the lower mold core 3 can be directly removed from the upper part of the lower mold frame 1 without disassembling the lower mold frame 1 and the ejection system 2.

[0047] Furthermore, a plurality of guide grooves are provided in the sliding direction of the adjustment plate 41, and the number of the guide members 42 corresponds to the number of the guide grooves. The plurality of guide grooves can ensure the sliding accuracy and stability of the adjustment plate 41.

[0048] In this embodiment, if Figure 4As shown in Figure 6, the slide groove includes a first slide groove provided on the bottom needle plate 21. The first slide groove is provided with at least one first protrusion 212 and a first recess 213. The side of the adjustment plate 41 facing the bottom needle plate 21 is provided with a second recess 413 for avoiding the first protrusion 212, and a second protrusion 412 corresponding to the first recess 213. When sliding to the low or high position, the first protrusion 212 and the second recess 413 form a mutual fit, and the first recess and the second protrusion 412 also form a mutual fit, thereby increasing the positional stability of the adjustment plate 41.

[0049] Furthermore, a first limiting groove 214 is provided on the first convex portion 212 , and a first limiting rib 419 corresponding to the first limiting groove 214 is provided on the second concave portion 413 .

[0050] Similarly, the slide groove includes a second slide groove arranged on the base plate 11, and at least one third protrusion 112 and a third recess 113 are provided in the second slide groove. The side of the adjustment plate 41 facing the base plate 11 is provided with a fourth recess 414 for avoiding the third protrusion 112, and a fourth protrusion 415 corresponding to the third recess 113.

[0051] Furthermore, a second limiting groove 114 is provided on the third convex portion 112 , and a second limiting rib 417 corresponding to the second limiting groove 114 is provided on the fourth concave portion 414 .

[0052] In this embodiment, force-applying auxiliary members 45 are provided at both ends or one end of the adjustment plate 41, and the force-applying auxiliary members 45 are detachably connected or fixedly connected to the adjustment plate 41. Figure 1 and Figure 2 As shown, the force-applying auxiliary member 45 can be a handle provided at both ends, and the handle can be fixed integrally or detachable.

[0053] Of course, the present invention provides a specific embodiment of the lifting adjustment mechanism 4, which is an extremely simple adjustment mechanism that can be operated by simply pushing the adjustment plate 41 left and right. Of course, the lifting adjustment mechanism 4 can also be implemented in other structural forms, for example, by adjusting the nut, by adding or removing the spacer at the bottom of the ejection system 2, etc.

[0054] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0055] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A plastic product mold, comprising a lower mold assembly, wherein the lower mold assembly comprises a lower mold frame (1), an ejection system (2) and a lower mold core (3), characterized in that: It also includes a lifting and adjusting mechanism (4) for controlling the height of the ejection system (2), and by adjusting the height of the ejection system (2), the accessories of the ejection system (2) can be withdrawn from or extended into the lower mold core (3); The lifting and lowering adjustment mechanism (4) comprises an adjustment plate (41), wherein the adjustment plate (41) is arranged between the bottom needle plate (21) of the ejection system (2) and the bottom plate (11) of the lower mold frame (1).

2. The plastic product mold according to claim 1, wherein: The bottom needle plate (21) and / or the bottom plate (11) are provided with a sliding groove for the adjustment plate (41) to slide laterally, and the adjustment plate (41) is provided with a first guide structure (411). The lifting and adjusting mechanism (4) further comprises a guide member (42), wherein the guide member (42) is fixedly arranged and provided with a second guide structure (421). The first guide structure (411) and the second guide structure (421) cooperate to enable the adjusting plate (41) to rise or fall when sliding along the sliding groove.

3. The plastic product mold according to claim 2, wherein: The first guide structure (411) is a guide groove provided on the side walls on both sides of the adjustment plate (41), and the second guide structure (421) is a guide pin provided on the guide member (42) and inserted into the guide groove.

4. The plastic product mold according to claim 3, wherein: The guide groove comprises a translation section (411a) arranged at a low position on the side wall of the adjustment plate (41), a rising section (411b) connected to the translation section (411a) and gradually rising to a high position, and a retaining section (411c) connected to the highest position of the rising section (411b).

5. The plastic product mold according to claim 3, wherein: A plurality of guide grooves are provided in the sliding direction of the adjustment plate (41), and the number of the guide members (42) corresponds to the number of the guide grooves.

6. The plastic product mold according to claim 2, wherein: The slide groove comprises a first slide groove arranged on the bottom needle plate (21), wherein at least one first convex portion (212) and a first concave portion (213) are arranged in the first slide groove, and a second concave portion (413) for avoiding the first convex portion (212) and a second convex portion (412) corresponding to the first concave portion (213) are arranged on a side of the adjustment plate (41) facing the bottom needle plate (21).

7. The plastic product mold according to claim 6, wherein: The first convex portion (212) is provided with a first limiting groove (214), and the second concave portion (413) is provided with a first limiting rib (419) corresponding to the first limiting groove (214).

8. The plastic product mold according to claim 2, wherein: The slide groove comprises a second slide groove arranged on the bottom plate (11), wherein at least one third convex portion (112) and a third concave portion (113) are arranged in the second slide groove, and a fourth concave portion (414) for avoiding the third convex portion (112) and a fourth convex portion (415) corresponding to the third concave portion (113) are arranged on a side of the adjustment plate (41) facing the bottom plate (11).

9. The plastic product mold according to claim 8, wherein: The third convex portion (112) is provided with a second limiting groove (114), and the fourth concave portion (414) is provided with a second limiting rib (417) corresponding to the second limiting groove (114).

10. The plastic product mold according to claim 2, wherein: Both ends or one end of the adjustment plate (41) are provided with force-applying auxiliary components (45), and the force-applying auxiliary components (45) are detachably connected or fixedly connected to the adjustment plate (41).

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