A mold with a pull hook structure

Abstract

The utility model provides a kind of mould with draw hook structure, upper die set and lower die set form injection molding space between upper die set and lower die set;Further include: several draw hooks, set on upper die set;Several limit blocks, pass and be equipped on the needle plate on lower die set;In mould closing state, several draw hooks are connected with several limit blocks;Several reset blocks, set on lower die set, in mould opening state, several reset blocks contact with several limit blocks;The mould with draw hook structure proposed by the utility model directly acts force on needle plate, without force transmission;While using several draw hooks and several limit blocks cooperate, the stability of needle plate can be ensured, and then when stripping, the balance of needle plate can be ensured, to avoid product wear or deformation and other problems.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold with a hook structure. Background Technology

[0002] Inverted molds are commonly used in the injection molding field, especially for molding plastic products such as automotive parts and electronic casings. The characteristic of an inverted mold is that the cavity is in the front mold (fixed mold) and the core is in the rear mold (moving mold). The product is formed by the cooperation of the front and rear molds. After the product is formed, it needs to be demolded so that it can be removed by a robot.

[0003] In existing technologies, for demolding products after molding, hydraulic cylinders or chain auxiliary devices are often added to the rear mold to complete the demolding process. However, adding hydraulic cylinders or chain auxiliary devices increases the overall volume of the mold. At the same time, during the demolding process, the increased number of components requires force to be transmitted to the product to complete the demolding, resulting in reduced demolding efficiency. In addition, when using chain auxiliary devices for demolding, the unstable chain linkage causes the product to be in an unbalanced state during demolding, which may lead to problems such as product wear or deformation. Utility Model Content

[0004] The purpose of this utility model is to provide a mold with a hook structure, which can solve the above-mentioned technical problems.

[0005] This utility model provides a mold with a hook structure, an upper mold assembly and a lower mold assembly, with an injection space formed between the upper mold assembly and the lower mold assembly; it also includes:

[0006] Several hooks are installed on the upper module;

[0007] Several limiting blocks are inserted into the pin plate on the lower module; in the mold closed state, several hooks are engaged with several limiting blocks;

[0008] Several reset blocks are set on the lower module. In the mold-open state, the reset blocks are in contact with several limit blocks.

[0009] As a further technical solution, the needle plate is provided with several reset rods; the several reset rods are inserted into the template of the lower module.

[0010] As a further technical solution, the pull hook includes:

[0011] Connecting arm and hook body;

[0012] One end of the connecting arm is set on the upper module; the hook is set on the other end of the connecting arm.

[0013] As a further technical solution, a first transition angle is provided on the hook body.

[0014] As a further technical solution, the needle plate is provided with mounting holes, the limiting block is set in the mounting holes, and a reset device is provided between the mounting holes and the limiting block.

[0015] As a further technical solution, a second transition angle is provided on the limit block.

[0016] As a further technical solution, a third transition angle is provided on the reset block.

[0017] As a further technical solution, a slide is formed between adjacent reset blocks; in the mold-closed state, the pull hook is set in the slide.

[0018] The technical solution of this utility model involves setting several hooks on the upper mold assembly and several limiting blocks on the lower mold assembly. In the mold-closed state, the hooks engage with the limiting blocks. During mold opening, driven by the upper mold assembly, the hooks move with it, pulling the limiting blocks and causing the injection plate to move along with them. During this movement, ejectors on the injection plate push the product out of the injection space. As the upper mold assembly continues to move, the hooks pull the limiting blocks, causing them to move continuously. Several limiting blocks contact several reset blocks respectively. Under the push of the reset blocks, the limiting blocks retract into the needle plate. As several hooks move continuously, the limiting blocks separate from the hooks. After the upper module continues to move, the mold opening is completed. Compared with the prior art, the technical solution of this utility model directly applies force to the needle plate without force transmission. At the same time, the use of several hooks and several limiting blocks can ensure the stability of the needle plate. Thus, during demolding, the balance of the needle plate can be ensured, avoiding problems such as product wear or deformation. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a mold with an ejector hook mechanism according to the present invention:

[0021] Figure 2 for Figure 1 A sectional view of section AA;

[0022] Figure 3 for Figure 2 Enlarged schematic diagram of section X in the middle;

[0023] Figure 4 for Figure 2 A sectional view of section BB;

[0024] Figure 5 This is a perspective view of a mold with an ejector hook mechanism according to the present invention;

[0025] Figure 6 This is a perspective view of a mold with an ejector hook mechanism according to the present invention after the hook has been removed;

[0026] Explanation of reference numerals in the attached figures:

[0027] 100 - Upper module; 200 - Lower module; 201 - First needle plate; 202 - Second needle plate; 203 - Mounting hole; 204 - Reset device; 205 - Ejector pin; 206 - Reset rod; 400 - Product; 500 - Hook; 501 - Connecting arm; 502 - Hook body; 503 - First transition angle; 600 - Limiting block; 601 - Second transition angle; 700 - Reset block; 701 - Third transition angle; 800 - Slide rail. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figure 1-6 As shown, this utility model provides a mold with a hook structure, an upper mold assembly 100 and a lower mold assembly 200, forming an injection space between the upper mold assembly 100 and the lower mold assembly 200; during the molding of product 400, the upper mold assembly 100 and the lower mold assembly 200 cooperate to place the raw material into the injection space to complete the molding of product 400; since both the upper mold assembly 100 and the lower mold assembly 200 adopt existing technology, this utility model will not be further described; it also includes:

[0032] Several hooks 500 are mounted on the upper mold assembly 100; several limit blocks 600 are mounted on the needle plate on the lower mold assembly 200; in the mold-closed state, the hooks 500 and limit blocks 600 are engaged; several reset blocks 700 are mounted on the lower mold assembly 200, and in the mold-open state, the reset blocks 700 and limit blocks 600 are in contact; specifically, after the product 400 is injection molded, the upper mold assembly 100 moves under the drive of the injection molding machine; and the upper mold assembly 100 drives the hooks 500 to move simultaneously; since the hooks 500 are engaged with the limit blocks 600, the movement of the hooks 500 will drive the limit blocks 600 to move simultaneously; since the limit blocks 600 are mounted on the needle plate, the needle plate will move when the limit blocks 600 move. Simultaneously, the limit block 600 moves, and the ejector pin 205 on the needle plate continuously ejects the product 400 from the injection space. As the upper mold 100 continues to move, the hook 500 will continuously drive the limit block 600 to move until the limit block 600 reaches the position of the reset block 700. Since the reset block 700 is fixedly connected to the lower mold 200, when the limit block 600 contacts the reset block 700, the reset block 700 will block the limit block 600 from moving further, and the limit block 600 will retract into the needle plate under the obstruction of the reset block 700. After the limit block 600 enters the needle plate, the limit block 600 separates from the hook 500, and the hook 500 continues to move under the drive of the upper mold 100, finally completing the mold opening operation.

[0033] In this utility model, hooks 500 are preferably provided on both sides of the upper module 100; and reset blocks 700 and limit blocks 600 are provided opposite to each other on both sides of the lower module 200; the needle plate is pulled by the cooperation of the hooks 500, reset blocks 700 and limit blocks 600, thereby completing the demolding of the product 400.

[0034] The technical solution of this utility model involves setting a plurality of hooks 500 on the upper mold assembly 100 and a plurality of limiting blocks 600 on the lower mold assembly 200. In the mold-closed state, the hooks 500 engage with the limiting blocks 600. When the mold opens, driven by the upper mold assembly 100, the hooks 500 move with it, pulling the limiting blocks and causing the injection plate to move along with them. During this movement, the ejector pins 205 on the injection plate eject the product 400 from the injection space. As the upper mold assembly 100 continues to move, the hooks 500 pull the limiting blocks 600. The process continues, causing several limiting blocks 600 to contact several reset blocks 700 respectively. Under the push of the reset blocks 700, the limiting blocks 600 retract into the needle plate. As the hooks 500 continue to move, the limiting blocks 600 separate from the hooks 500. After the upper module 100 continues to move, the mold opening is completed. Compared with the prior art, the technical solution of this utility model directly applies force to the needle plate without the need for force transmission. At the same time, the use of hooks 500 and limiting blocks 600 ensures the stability of the needle plate, thereby ensuring the balance of the needle plate during demolding and avoiding problems such as wear or deformation of the product 400.

[0035] like Figure 2 As shown, a plurality of reset rods 206 are provided on the needle plate; the plurality of reset rods 206 are inserted through the template of the lower mold 200; in this utility model, the needle plate includes a first needle plate 201 and a second needle plate 202, one end of the ejector pin 205 is provided on the first needle plate 201, and the other end passes through the second needle plate 202 and is placed in the injection space; one end of the reset rod 206 is provided on the first needle plate 201, and the other end passes through the second needle plate 202 and is inserted into the molding plate of the lower mold 200; in the mold-opening state, the ejector pin 205 is driven by the second needle plate 202 to move and release the product 400 The ejection occurs simultaneously; the second needle plate 202 drives the reset rod 206 to extend out of the molding plate; during mold closing, since the hook 500 and the limit block 600 are already separated, when the upper module 100 contacts the reset rod 206, it will push the reset rod 206 to move in the opposite direction, and push the first needle plate 201 and the second needle plate 202 to reset through the reset rod 206; after the first needle plate 201 and the second needle plate 202 are reset, the hook 500 engages with the limit block 600 under the drive of the upper module 100; and the subsequent actions continue.

[0036] like Figure 2 and Figure 3 As shown, the hook 500 includes a connecting arm 501 and a hook body 502; one end of the connecting arm 501 is disposed on the upper module 100; the hook body 502 is disposed on the other end of the connecting arm 501; the hook body 502 engages with the limiting block 600, and the limiting block 600 is moved by the upper module 100 through the hook body 502; preferably, the connecting arm 501 is fixed to the upper module 100 by bolts; in addition, a first transition angle 503 is provided on the hook body 502; when the mold is closed, when the hook body 502 contacts the limiting block 600, the first transition angle 503 is used for transition, reducing the impact of the hook body 502 on the limiting block 600 when the mold is closed, thereby reducing the probability of damage to the hook 500 and the limiting block 600;

[0037] like Figure 3 As shown, the needle plate is provided with mounting holes 203, and the limiting block 600 is disposed in the mounting holes 203. A reset device 204 is provided between the mounting holes 203 and the limiting block 600. When the mold is opened, the limiting block 600 contacts the reset block 700. Since the reset block 700 is in a fixed state, the limiting block 600 is squeezed by the reset block 700, causing the limiting block 600 to move into the mounting holes 203, and squeezing the reset device 204 during the movement. When the mold is closed, the reset rod 206 pushes the needle plate to reset, and drives the needle plate to reset. The limiting block 600 separates from the reset block 700. During the separation process, the limiting block 600 extends out of the needle plate under the push of the reset device 204, completing the reset of the limiting block 600. In this utility model, the preferred reset device 204 is a spring. In addition, the limiting block 600 is provided with a second transition angle 601. When it comes into contact with the hook 500, the second transition angle 601 contacts, which enables the hook body 502 to gradually compress the limiting block 600, thereby reducing the probability of damage to the hook body 502 and the limiting block 600.

[0038] Of course, a third transition angle 701 is provided on the reset block 700; when the mold is opened, the third transition angle 701 and the second transition angle 601 come into contact, which allows the reset block 700 to gradually compress the limiting block 600 and the limiting block 600 to gradually enter the mounting hole 203, thereby reducing the probability of damage to the reset block 700 and the limiting block 600.

[0039] like Figure 5 and Figure 6As shown, a slide 800 is formed between adjacent reset blocks 700; in the mold-closed state, the hook 500 is set in the slide 800; specifically, two reset blocks 700 are provided on both sides of the lower mold 200, and the two reset blocks 700 are set separately, forming a slide 800 between the two reset blocks 700; when the mold is closed, the hook 500 is in the slide 800; when the mold is opened, the running trajectory of the hook 500 can be restricted by the cooperation of the two reset blocks 700, so as to avoid the hook 500 from deviating during operation, thereby improving the stability of the hook 500 operation.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mold having a hook structure, comprising an upper mold assembly (100) and a lower mold assembly (200), wherein an injection space is formed between the upper mold assembly (100) and the lower mold assembly (200); characterized in that, Also includes: Several hooks (500) are provided on the upper module (100); A number of limiting blocks (600) are inserted into the needle plate on the lower module (200); in the mold closed state, a number of the pull hooks (500) are engaged with a number of the limiting blocks (600); Several reset blocks (700) are disposed on the lower module (200). In the mold-open state, the several reset blocks (700) are in contact with several limit blocks (600).

2. The mold with a hook structure according to claim 1, characterized in that, The needle plate is provided with a plurality of reset rods (206); the plurality of reset rods (206) are inserted on the template of the lower module (200).

3. The mold with a hook structure according to claim 1, characterized in that, The hook (500) includes: Connecting arm (501) and hook body (502); One end of the connecting arm (501) is disposed on the upper module (100); the hook (502) is disposed on the other end of the connecting arm (501).

4. The mold with a hook structure according to claim 3, characterized in that, The hook body (502) is provided with a first transition angle (503).

5. The mold with a hook structure according to claim 1, characterized in that, The needle plate is provided with a mounting hole (203), the limiting block (600) is disposed in the mounting hole (203), and a reset device (204) is provided between the mounting hole (203) and the limiting block (600).

6. The mold with a hook structure according to claim 5, characterized in that, The limiting block (600) is provided with a second transition angle (601).

7. The mold with a hook structure according to claim 1, characterized in that, The reset block (700) is provided with a third transition angle (701).

8. The mold with a hook structure according to claim 7, characterized in that, A slide (800) is formed between adjacent reset blocks (700); in the mold closing state, the hook (500) is disposed in the slide (800).

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