Die for hook production

Abstract

The utility model relates to a mold for hook production, which comprises a fixed mold, a movable mold and a base, the fixed mold is fixedly connected with the base, the movable mold is positioned above the fixed mold and is provided with a feed port, the movable mold is provided with a plurality of first forming grooves, the fixed mold is provided with a second forming groove, and a flow channel is arranged between the movable mold and the fixed mold. The mold further comprises a front limiting plate and a rear limiting plate, inserting rods which are the same as the second forming grooves in number and located in the corresponding second forming grooves are arranged on the front limiting plate in a protruding mode, all the inserting rods are detachably connected with the front limiting plate, and the front limiting plate and the rear limiting plate are the same in shape and size and are detachably connected with the fixed mold. By the adoption of the scheme, the mold for hook production is provided, and the fixed mold and the movable mold are separated, so that the hook located in the second forming groove can be driven to be separated from the fixed mold by moving the front limiting plate and the rear limiting plate.

Description

Technical Field

[0001] This utility model relates to the field of molds, specifically to a mold for hook production. Background Technology

[0002] Hook molds generally consist of two parts: a fixed mold and a moving mold. These two parts together form a closed space, or cavity, used to shape the hook. In the hook production process, after the moving mold and the fixed mold are closed to form a sealed cavity, molten plastic (usually thermoplastic) is injected into the cavity of the mold by an injection molding machine under high pressure. Once the plastic is in the cavity, it will cool and gradually solidify inside the mold. When the plastic is completely solidified, the mold is opened and the finished hook can be ejected from the mold using ejector pins or other demolding mechanisms.

[0003] However, when using ejector pins or similar objects to eject hooks, the ejector pins may leave marks or dents on the hook surface during the ejection process, affecting the product's appearance quality. Furthermore, if the ejector pin is poorly designed or the ejection force is uneven, it may cause scratches or other defects on the product surface. Therefore, how to ensure that no marks or dents are left on the hook surface during the ejection process, while preserving the integrity of the hook, has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a mold for hook production that separates the fixed mold and the moving mold, and then drives the hook located in the second forming groove to separate from the fixed mold by moving the front limit plate and the rear limit plate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a fixed mold, a moving mold, and a base. The fixed mold and the base are fixedly connected. The moving mold is located above the fixed mold and has a feed inlet. The moving mold has several first forming grooves. The fixed mold has a second forming groove corresponding to each of the first forming grooves. A flow channel is provided between the moving mold and the fixed mold between each of the first and second forming grooves. The flow channel is connected to the feed inlet. It also includes a front limiting plate and a rear limiting plate. The front limiting plate has protruding rods of the same number as the second forming grooves, located within the corresponding second forming grooves, and each rod is detachably connected to the front limiting plate. The front and rear limiting plates are of the same shape and size and are detachably connected to the fixed mold.

[0006] The present invention is further configured such that: the fixed mold is provided with positioning posts protruding from each of its top corners, and the moving mold is provided with positioning grooves corresponding to each positioning post.

[0007] The present invention is further configured to include bolts located at each apex, each bolt being inserted into a moving mold and threadedly engaged with a corresponding positioning post.

[0008] The present invention is further configured such that: the front limiting plate includes an installation section for installing each plug rod and mating sections located on the left and right sides of the installation section; the left and right sides of the fixed mold are provided with installation blocks made of a material that is prone to deformation; each installation block includes an insertion section and a limiting section; each insertion section is respectively inserted into the mating section on the corresponding side and each limiting section abuts against the mating section on the corresponding side; each mating section is provided with a limiting groove corresponding to the limiting section.

[0009] The present invention is further configured such that each of the limiting segments is inclined and has a gap between it and the corresponding insertion segment.

[0010] The present invention is further configured to include a number of matching sleeves equal to the number of insertion rods, each matching sleeve including a mounting plate, and each mounting plate being detachably connected to the front limit plate.

[0011] The present invention is further configured such that: each of the mating sleeves includes an installation part made of a material that is prone to deformation; each of the insert rods includes a connecting section for inserting a front limiting plate; each installation part is fitted with a corresponding connecting section; each connecting section is provided with a plurality of grooves at intervals; and each installation part is provided with a protrusion that mates with the groove.

[0012] By adopting the above technical solution, since both the front and rear limiting plates can be detachably connected to the fixed mold and the inserts on the front and rear limiting plates are located in the second molding grooves, after the molten plastic is solidified and formed, the moving mold is moved upward and separated from the fixed mold. At this time, by removing both the front and rear limiting plates from the fixed mold, the inserts located in the second molding grooves can be moved upward by moving the front and rear limiting plates upward, thereby driving the hooks formed in the second molding grooves to move upward synchronously. After separating each insert from the corresponding front or rear limiting plate, the plastic formed between each hook can be cut off to obtain the required hook. Furthermore, by fixing the end of the insert, the installation of the hook will not affect the normal use of the hook. When the hook produced by the above method is separated from the fixed mold, since the circumferential direction is not directly subjected to the contact force of objects such as ejector pins, the occurrence of marks and dents on the hook surface can be reduced. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a perspective view of a specific embodiment of the present utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a perspective view of the moving mold after it has been flipped in this utility model;

[0017] Figure 4 for Figure 2 Enlarged view of A in the middle;

[0018] Figure 5 for Figure 2 Enlarged view of B in the middle;

[0019] Figure 6 for Figure 3 A magnified view of C.

[0020] In the diagram: 1-fixed mold, 11-second forming groove, 12-positioning post, 13-installation block, 131-insertion section, 132-limiting section, 133-gap;

[0021] 2-Moving mold, 21-Feed inlet, 22-First forming groove, 23-Positioning groove;

[0022] 3-Base;

[0023] 4-Flow channel;

[0024] 5-Front limit plate, 51-Installation section, 52-Matching section, 521-Limit groove, 53-Insertion rod, 531-Connecting section, 5311-Groove;

[0025] 6-Rear limit plate;

[0026] 7- Bolts;

[0027] 8-Matching sleeve, 81-Mounting plate, 82-Connecting part, 821-Protrusion. Detailed Implementation

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

[0029] like Figures 1-6As shown, this utility model discloses a mold for hook production, including a fixed mold 1, a movable mold 2, and a base 3. The fixed mold 1 and the base 3 are fixedly connected by welding, bolts, or other methods. The movable mold 2 is located above the fixed mold 1 and has a feed inlet 21. The movable mold 2 has several first forming grooves 22. The fixed mold 1 has a second forming groove 11 corresponding to each of the first forming grooves 22. A flow channel 4 is provided between the movable mold 2 and the fixed mold 1 between each of the first forming grooves 22 and the second forming grooves 11. The flow channel 4 is connected to the feed inlet 21 and its other end is connected to the first forming grooves 22 and the second forming grooves 11. By closing the movable mold 2 and the fixed mold 1... At this time, the molten plastic flows through the feed port 21 toward the flow channel 4 and toward the first forming groove 22 and the second forming groove 11. After the plastic cools in the fixed mold 1 and the moving mold 2 and solidifies with the first forming groove 22 and the second forming groove 11, the hot-melt plastic forms hooks. Then, the moving mold 2 and the fixed mold 1 are separated to remove the formed hooks. The plastic parts formed in the flow channel 4 between the hooks are then removed by cutting or other means to obtain the required hooks (this is prior art and will not be described in detail here). It also includes a front limiting plate 5 and a rear limiting plate 6. The front limiting plate 5 has the same number of protruding grooves as the second forming groove 11. Furthermore, the insert rods 53 located in the corresponding second molding grooves 11 are all detachably connected to the front limiting plate 5. The front limiting plate 5 is detachably connected to the fixed mold 1. The front limiting plate 5 and the rear limiting plate 6 are the same in shape and size and are both detachably connected to the fixed mold 1. Since the front limiting plate 5 and the rear limiting plate 6 can be detachably connected to the fixed mold 1, and the insert rods 53 on the front limiting plate 5 and the rear limiting plate 6 are located in each of the second molding grooves 11, after the molten plastic is solidified and formed, the moving mold 2 is moved upward and separated from the fixed mold 1. At this time, by removing the front limiting plate 5 and the rear limiting plate 6 from the fixed mold 1, the moving mold 2 can be moved upward by moving the front limiting plate 5 and the rear limiting plate 6 to drive the mold located in the second molding groove 11. The insert rods 53 in each of the second molding grooves 11 then drive the hooks formed in the second molding grooves 11 to move upward synchronously. After separating each insert rod 53 from the corresponding front limit plate 5 or rear limit plate 6, the plastic formed between each hook is cut off, and the required hook can be obtained. Since the insert rods 53 are located in the second molding grooves 11, fixing or cutting the ends of the insert rods 53 can achieve the installation of the hooks without affecting the normal use of the hooks. When the hooks produced in the above manner are separated from the fixed mold 1, they are not directly subjected to contact force from ejector pins or other objects in the circumferential direction, thus reducing the occurrence of marks and dents on the hook surface.

[0030] It is worth noting that the insertion rod 53 in this technical solution is threaded, but in actual production, a smooth rod or other materials that need to be fixed with the hook can also be selected.

[0031] The fixed mold 1 has positioning posts 12 protruding from each of its top corners, and the moving mold 2 has positioning grooves 23 corresponding to each positioning post 12. When the moving mold 2 is placed on top of the fixed mold 1 from top to bottom, each positioning post 12 on the fixed mold 1 will be inserted into the positioning groove 23 at the corresponding position of the moving mold 2, thereby determining the relative position of the fixed mold 1 and the moving mold 2. This indirectly ensures that the feed port 21 is located above the flow channel 4 and will not be misaligned, thus ensuring that the molten plastic flows downward and enters the flow channel 4, thereby reaching the first molding groove 22 and the second molding groove 11 to cool and form a hook.

[0032] Preferably, it also includes bolts 7 located at each apex corner. Each bolt 7 is inserted into the moving mold 2 and threadedly engaged with the corresponding positioning post 12. By inserting each bolt 7 into each apex corner of the moving mold 2, threaded engagement is achieved with the positioning post 12 on the fixed mold 1, thereby enabling stable connection during the cooling and forming of the molten plastic, thus enabling stable production of hooks.

[0033] Furthermore, the front limiting plate 5 includes an installation section 51 for mounting each insert rod 53 and mating sections 52 located on the left and right sides of the installation section 51. The left and right sides of the fixed mold 1 are each provided with protruding installation blocks 13 made of a material easily deformable, such as rubber. Each installation block 13 includes an insertion section 131 and a limiting section 132. Each insertion section 131 is inserted into the corresponding mating section 52, and each limiting section 132 abuts against the corresponding mating section 52. Each mating section 52 is provided with a limiting groove 521 corresponding to the limiting section 132. Since the installation blocks 13 on the left and right sides of the fixed mold 1 are made of a material easily deformable, when the front limiting plate 5 is installed... When the connection with the mating section 52 is completed, a force needs to be applied to the mounting block 13 to force it to pass over the corresponding mating groove, thereby achieving stable insertion of the mounting block 13 into the corresponding mating section 52. Therefore, each rod 53 on the front limiting plate 5 can be stably located in the corresponding second molding groove 11, so that after the molten plastic enters between the first molding groove 22 and the second molding groove 11, it can stably cooperate with the rod 53 to form a shape, thereby making the produced hook stably connected with the rod 53. Therefore, as the front limiting plate 5 and the rear limiting plate 6 move upward, the hook located in the second molding groove 11 can be moved upward and detached from it.

[0034] Preferably, each of the limiting segments 132 is inclined and has a gap 133 between it and the corresponding insertion segment 131. Since the limiting segments 132 of each mounting block 13 are inclined, when one end of each limiting segment 132 abuts against the mating segment 52, each limiting segment 132 abuts against the front limiting plate 5 without the action of external force. At the same time, because of the gap 133 on each mounting block 13, the force applied to the limiting segment 132 can be applied more smoothly to deform it, so that the mounting block 13 can be separated from and mated with the corresponding mating segment 52 through the corresponding limiting groove 521.

[0035] This also includes the same number of mating sleeves 8 as the insertion rod 53. Each mating sleeve 8 includes a mounting plate 81, and each mounting plate 81 is detachably connected to the front limit plate 5 by bolts or other means. Since the mounting plate 81 of each mating sleeve 8 is detachably connected to the front limit plate 5, applying force to the moving mold 2 to move it upward and applying upward force to the front limit plate 5 and the rear limit plate 6 can drive the formed hooks to be taken out from each of the second forming grooves 11. At this time, separating each mounting plate 81 from the front limit plate 5 can achieve the simultaneous fixation of each hook to the insertion rod 53 and separation from the moving mold 2 and the fixed mold 1. That is, the hooks can be taken out and the connecting plastic between them can be cut and separated to obtain independent hooks.

[0036] Preferably, each of the mating sleeves 8 includes an installation part 82 made of a material that is easily deformable, such as rubber, and each of the insert rods 53 includes a connecting section 531 for inserting the front limiting plate 5. Each installation part 82 is fitted with a corresponding connecting section 531. Each connecting section 531 is provided with a plurality of grooves 5311 spaced apart. Each installation part 82 is provided with a protrusion 821 that mates with the grooves 5311. Since each connecting section 531 is provided with a groove 5311, during the process of connecting each insert rod 53 to the front limiting plate 5, since each groove 5311 of the installation part 82 is provided with a protrusion 821 corresponding to each groove 5311, after the connection between the insert rod 53 and the front limiting plate 5 is completed, the grooves 5311 on the insert rod 53 are restricted by the corresponding protrusions 821 and cannot rotate, thereby determining the relative position of the insert rod 53 and the front limiting plate 5.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mold for hook production, comprising a fixed mold, a movable mold, and a base, wherein the fixed mold and the base are fixedly connected, the movable mold is located above the fixed mold and has a feed inlet, the movable mold has a plurality of first forming grooves, the fixed mold has a second forming groove corresponding to each of the first forming grooves, and a flow channel is provided between the movable mold and the fixed mold between each of the first forming grooves and the second forming grooves, the flow channel being connected to the feed inlet, characterized in that: It also includes a front limiting plate and a rear limiting plate. The front limiting plate is provided with the same number of insert rods as the second forming grooves and located in the corresponding second forming grooves. Each insert rod is detachably connected to the front limiting plate. The front limiting plate and the rear limiting plate are the same in shape and size and are detachably connected to the fixed mold.

2. The mold for hook production according to claim 1, characterized in that: The fixed mold has positioning posts protruding from each of its top corners, and the moving mold has positioning grooves corresponding to each positioning post.

3. A mold for hook production according to claim 2, characterized in that: It also includes bolts located at each apex, each bolt being inserted into the moving mold and threadedly engaged with the corresponding positioning post.

4. A mold for hook production according to any one of claims 1-3, characterized in that: The front limiting plate includes an installation section for installing each plug rod and mating sections located on the left and right sides of the installation section. The left and right sides of the fixed mold are provided with installation blocks made of a material that is prone to deformation. Each installation block includes an insertion section and a limiting section. Each insertion section is inserted into the mating section on the corresponding side, and each limiting section abuts against the mating section on the corresponding side. Each mating section is provided with a limiting groove corresponding to the limiting section.

5. A mold for hook production according to claim 4, characterized in that: Each of the limiting segments is inclined and has a gap between it and the corresponding insertion segment.

6. A mold for hook production according to claim 5, characterized in that: It also includes the same number of mating sleeves as the insertion rods, each mating sleeve including a mounting plate, and each mounting plate being detachably connected to the front limit plate.

7. A mold for hook production according to claim 6, characterized in that: Each of the aforementioned sleeves includes an installation part made of a material that is prone to deformation, each of the aforementioned rods includes a connecting section for inserting a front limiting plate, each installation part is fitted with a corresponding connecting section, each connecting section is provided with a number of grooves at intervals, and each installation part is provided with a protrusion that mates with the grooves.

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