Insert positioning structure for injection mold

Abstract

An insert positioning structure for injection molds, relating to the field of injection mold technology, is disclosed. An adsorption block is movably inserted into a fixed module of the mold, and a telescopic tube is connected to the adsorption block. A contact spring is embedded in the fixed module, with both ends fixedly connected to the adsorption block and the inner wall of the fixed module, respectively. The right side wall of the positioning plate, adjacent to the center of the fixed module, is inclined towards one side of the fixed module, and a base plate is provided on the lower side of the adjacent side walls of both positioning plates. A fixing block is symmetrically fixed to the right side wall of the fixing frame, and the fixing block is slidably positioned in a groove on the side wall of the adjacent positioning plate via a slider. A tension spring is embedded and fixed in a groove on the side wall of the positioning plate, and the other end of the tension spring is fixedly connected to the slider on the fixing block. A support mechanism is symmetrically arranged on the fixing frame outside the fixed module, and the support mechanism is connected to the positioning plate. This allows for easy placement of the insert in the desired central position without multiple adjustments, improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and specifically to an insert positioning structure for injection molds. Background Technology

[0002] In injection molds, inserts are typically used to form specific structures or functions during the injection molding process. Accurate positioning of inserts is crucial for ensuring product quality. Traditional insert positioning methods often employ simple mechanical fixing or manual adjustment, which suffer from low positioning accuracy, cumbersome operation, and a tendency to loosen, thus affecting production efficiency and product quality. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a reasonably designed and easy-to-use insert positioning structure for injection molds, which can effectively solve the defects of the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: It comprises:

[0005] The adsorption block is movably inserted into the fixed module of the mold. A telescopic tube is connected to the adsorption block. After passing through the fixed module and the bottom plate, the telescopic tube is connected to the negative pressure pump.

[0006] An anti-contact spring is embedded in the fixed module, and its two ends are fixedly connected to the adsorption block and the inner wall of the fixed module, respectively.

[0007] Positioning plates, there are two positioning plates, which are symmetrically arranged between the fixed module and the moving module. The right side wall of the positioning plate is inclined towards the side of the fixed module adjacent to the center of the fixed module. The distance between the two positioning plates and the adsorption block is the same. The bottom plate is provided on the lower side of the adjacent side wall of the two positioning plates.

[0008] Two fixing blocks are symmetrically fixed to the right side wall of the fixing frame. The fixing blocks are slidably set in the groove on the side wall of the adjacent positioning plate by a slider.

[0009] The tension springs are of several kinds, and they are equally and equidistantly embedded and fixed in the grooves on the side wall of the positioning plate. The other end of the tension spring is fixedly connected to the slider on the fixing block.

[0010] The support mechanism consists of two parts, which are symmetrically arranged on the fixed frame outside the fixed module. The support mechanism is connected to the positioning plate.

[0011] The above technical solution involves placing the insert between two positioning plates and simultaneously pushing the adsorption block towards one side of the fixed module. The positioning plates clamp the insert under the tension of the springs, with the tension of the springs on both sides being equal, ensuring the insert is centered on the adsorption block and its lower side contacts the base plate. The adsorption block is then released, and it moves outward under the elastic force of the contact spring until it contacts the insert. An external vacuum pump is then activated, allowing the adsorption block to vacuum-adsorb the insert, achieving a positioning effect. During injection molding, the moving module moves towards one side of the fixed module. During this movement, the moving module first contacts the positioning plate, and simultaneously, the inclined surface of the positioning plate causes it to move to both sides. As the positioning plate moves, several grooves on its sidewall slide on the sliders on the fixed block, simultaneously stretching the springs, thus not affecting the injection molding process. The positioning plate can be supported by a support mechanism during movement without affecting its movement.

[0012] As a further improvement of this utility model, the adsorption block is fitted with and fixed with a limiting ring on one end of the fixed module, and the limiting ring is slidably arranged in a cylindrical groove on the inner wall of the fixed module.

[0013] The above technical solution facilitates the positioning of the adsorption block, preventing it from being attached to the product and moving out of the fixed module during demolding.

[0014] As a further improvement of this utility model, the support mechanism includes:

[0015] Support rods, there are two support rods, which are symmetrically connected to the positioning plate on one side wall adjacent to the positioning module by a shaft, and a support connecting rod is fixed on the other end of each support rod;

[0016] The movable blocks are two in number and are both U-shaped. The movable blocks are respectively sleeved on and screwed to the other end of the support connecting rod by a shaft. The movable blocks are slidably disposed in the groove on the outer wall of the fixed frame outside the fixed module.

[0017] The slides are four in number, and they are fixed symmetrically in pairs on the outer wall of the movable block. The slides are slidably mounted on the inner wall of the groove on the outer wall of the fixed frame.

[0018] With the above technical solution, when the positioning plate moves, it drives the support rod to move. The support rod drives one end of the support connecting rod to rotate, and the other end of the support connecting rod drives the moving block to move. The moving block moves within the side wall of the fixed frame via the sliding plate, and can maintain support for the positioning plate during the movement.

[0019] As a further improvement of this utility model, a support frame is fixed on one side wall of the positioning plate adjacent to the fixed module. The support frame is arranged in an "L" shape, and the support plate on the other side of the support frame is movably inserted into the fixed block.

[0020] The above technical solution allows for support of the positioning plate on the side furthest from the support mechanism.

[0021] As a further improvement of this utility model, a limiting groove is provided on one side wall of the positioning plate adjacent to the adsorption block, and the inner wall of the limiting groove is set in the same plane as the side wall of the adsorption block extending out of the positioning module.

[0022] With the above technical solution, when placing the insert, the insert can be made to abut against the inner wall on the left side of the limiting groove, and the adsorption block can be made to adsorb against the insert under the push of the abutment spring.

[0023] As a further improvement of this utility model, internal threaded tubes are fixed on the upper surface of the base plate. The internal threaded tubes are embedded in the positioning plate, and the strip groove on the outer ring wall of the internal threaded tube is inserted into the inner wall of the positioning plate. The internal threaded tubes are screwed with screws through threads. The upper end of the screws is screwed into the positioning plate through a bearing. A drive rod is screwed to one side of the upper right side wall of the positioning plate through a bearing. The drive rod is connected to the upper end of the screw through a worm gear pair.

[0024] With the above technical solution, the drive rod can be rotated according to the height of the insert. The drive rod drives the corresponding screw to rotate through the worm gear pair. The screw drives the internal thread tube to move up and down. The internal thread tube drives the base plate to move up and down until it reaches the appropriate position. Thus, the height of the base plate can be adjusted according to the height of the insert.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows: The insert positioning structure for injection molds described in this utility model can easily place the insert in the required central position without multiple adjustments, thus improving work efficiency. This utility model has the advantages of reasonable design and low manufacturing cost. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a cross-sectional view of the present invention.

[0028] Figure 3 This is an exploded view of the positioning plate, support mechanism, fixing block, and base plate in this utility model.

[0029] Figure 4 for Figure 3 Enlarged view of section A.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Adsorption block; 2. Telescopic tube; 3. Contact spring; 4. Positioning plate; 4-1. Limiting groove; 5. Base plate; 6. Fixing block; 7. Tension spring; 8. Support mechanism; 8-1. Support rod; 8-2. Support connecting rod; 8-3. Moving block; 8-4. Slide plate; 9. Fixed module; 10. Fixed frame; 11. Moving module; 12. Limiting ring; 13. Support frame; 14. Internal threaded tube; 15. Screw; 16. Drive rod. Detailed Implementation

[0032] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Example 1: As Figures 1-4 As shown, this embodiment includes an adsorption block 1, which is movably inserted into the fixed module 9 of the mold. A telescopic tube 2 is connected to the adsorption block 1. The telescopic tube 2 passes through the fixed module 9 and the base plate 5 and is connected to an external negative pressure pump. A limiting ring 12 is sleeved and fixed on one end of the adsorption block 1 in the fixed module 9. The limiting ring 12 is slidably disposed in a cylindrical groove on the inner wall of the fixed module 9, which can facilitate the limiting of the adsorption block 1 and prevent the adsorption block 1 from being connected to the product and moving out of the fixed module 9 during demolding.

[0034] The resisting spring 3 is embedded in the fixed module 9, and its two ends are welded and fixed to the adsorption block 1 and the inner wall of the fixed module 9, respectively.

[0035] Positioning plates 4, two of them, are symmetrically arranged between the fixed module 9 and the moving module 11. The right side wall of the positioning plate 4 is inclined towards the center of the fixed module 9. The distance between the two positioning plates 4 and the adsorption block 1 is the same. The bottom plate 5 is provided on the lower side of the adjacent side wall of the two positioning plates 4. A limiting groove 4-1 is opened on the side wall of the positioning plate 4 adjacent to the adsorption block 1. The inner wall of the limiting groove 4-1 is set in the same plane as the side wall of the adsorption block 1 extending out of the fixed module 9. When the insert is placed, the insert can be made to abut against the left inner wall of the limiting groove 4-1, and the adsorption block 1 can be adsorbed by the insert under the push of the abutment spring 3.

[0036] Fixing block 6, there are two fixing blocks 6, which are symmetrically welded and fixed to the right side wall of the fixing frame 10. The fixing blocks 6 are slidably set in the groove on the side wall of the adjacent positioning plate 4 by a slider.

[0037] Tension spring 7, there are several tension springs 7, and they are equally and equally spaced and welded and fixed in the grooves on the side wall of the positioning plate 4. The other end of the tension spring 7 is welded and fixed to the slider on the fixing block 6.

[0038] Support mechanism 8, there are two support mechanisms 8, which are symmetrically arranged on the fixed frame 10 outside the fixed module 9. The support mechanism 8 is connected to the positioning plate 4. A support frame 13 is welded and fixed to the side wall of the positioning plate 4 adjacent to the fixed module 9. The support frame 13 is arranged in an "L" shape. The support plate on the other side of the support frame 13 is movably inserted into the fixed block 6, which can support the side of the positioning plate 4 away from the support mechanism 8.

[0039] Example 2: See Figure 1 , Figure 3 As shown, based on Embodiment 1, the support mechanism 8 includes:

[0040] Support rod 8-1, there are two support rods 8-1, and they are symmetrically connected to the side wall of the positioning plate 4 adjacent to the positioning module 9 by a shaft. Support connecting rod 8-2 is welded and fixed to the other end of each support rod 8-1.

[0041] There are two movable blocks 8-3, both of which are U-shaped. The movable blocks 8-3 are respectively sleeved and screwed to the other end of the support connecting rod 8-2 through the shaft. The movable blocks 8-3 are slidably disposed in the groove on the outer wall of the fixed frame 10 outside the fixed module 9.

[0042] The slide plate 8-4 consists of four slide plates, which are symmetrically welded and fixed to the outer wall of the movable block 8-3 in pairs. The slide plates 8-4 are slidably set on the inner wall of the sliding groove on the outer wall of the fixed frame 10.

[0043] Example 3: See Figure 3-4 As shown, based on Embodiment 1, internally threaded tubes 14 are welded and fixed on the upper surface of the base plate 5. The internally threaded tubes 14 are embedded in the positioning plate 4, and the strip groove on the outer ring wall of the internally threaded tube 14 is inserted into the inner wall of the positioning plate 4. The internally threaded tubes 14 are all threadedly connected to the screw rods 15. The upper end of the screw rods 15 is screwed into the positioning plate 4 through a bearing. A drive rod 16 is screwed into one side of the upper right side wall of the positioning plate 4 through a bearing. The drive rod 16 is connected to the upper end of the screw rod 15 through a worm gear pair.

[0044] When using this utility model, the drive rod 16 is rotated according to the height of the insert. The drive rod 16 drives the corresponding screw 15 to rotate through the worm gear pair. The screw 15 drives the internal thread tube 14 to move up and down, and the internal thread tube 14 drives the base plate 5 to move up and down until it reaches a suitable position. Thus, the height of the base plate 5 can be adjusted according to the height of the insert. The insert is placed between the two positioning plates 4, and at the same time, the adsorption block 1 is pushed towards one side of the positioning module 9. At this time, the positioning plate 4 clamps the insert under the tension of the tension spring 7, and the tension of the tension springs 7 on both sides is the same, which can ensure that the insert is located at the center of the adsorption block 1 and the lower side of the insert abuts against the base plate 5. Then, the adsorption block 1 is released, and the adsorption block 1 moves outward under the elastic force of the contact spring 3 until the adsorption block 1 abuts against the insert. The external vacuum is then activated. The pump allows for vacuum adsorption of the insert via the adsorption block 1, achieving a positioning effect. During injection molding, the moving module 11 moves to one side of the fixed module 9. During this movement, the moving module 11 first contacts the positioning plate 4, and simultaneously, the inclined surface of the positioning plate 4 causes the positioning plate 4 to move to both sides. As the positioning plate 4 moves, several grooves on its side wall slide on the slider on the fixed block 6, simultaneously stretching the tension spring 7, thus not affecting the injection molding process. When the positioning plate 4 moves, it drives the support rod 8-1 to move. The support rod 8-1 drives one end of the support connecting rod 8-2 to rotate, and the other end of the support connecting rod 8-2 drives the moving block 8-3 to move. The moving block 8-3 moves within the side wall of the fixed frame 10 via the sliding plate 8-4, maintaining support for the positioning plate 4 during the movement.

[0045] Compared with the prior art, the beneficial effects of this specific embodiment are as follows:

[0046] 1. Through the synergistic action of the adsorption block 1, the contact spring 3, the positioning plate 4 and the tension spring 7, the insert can be accurately positioned and clamped in the center of the mold. Under the action of the negative pressure pump, the adsorption block 1 performs vacuum adsorption on the insert to ensure that the insert remains stable during the injection molding process and avoids displacement or tilting.

[0047] 2. The positioning plate 4 can automatically move to both sides when the moving module 11 moves, and is kept stable by the support mechanism 8. The design of the support rod 8-1, support connecting rod 8-2, moving block 8-3 and sliding plate 8-4 in the support mechanism 8 ensures that the positioning plate 4 is always supported during the movement, ensuring the smooth progress of the injection molding process.

[0048] 3. The drive rod 16 drives the screw 15 to rotate through the worm gear pair. The height of the base plate 5 can be adjusted by the cooperation of the internal threaded tube 14 and the screw 15, so that the mold can adapt to inserts of different heights, improving the versatility and flexibility of the mold.

[0049] 4. The design of the limiting ring 12 and cylindrical groove on the adsorption block 1 effectively prevents the adsorption block 1 from being connected to the product and moving out of the fixed module 9 during the demolding process, ensuring the stability and safety of the mold and reducing the failure rate in production.

[0050] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An insert positioning structure for injection molds, characterized in that: It contains: The adsorption block (1) is movably inserted into the fixed module (9) of the mold. The adsorption block (1) is connected to a telescopic tube (2). The telescopic tube (2) passes through the fixed module (9) and the base plate (5) and is connected to an external negative pressure pump. The resisting spring (3) is embedded in the fixed module (9), and the two ends of the resisting spring (3) are fixedly connected to the adsorption block (1) and the inner wall of the fixed module (9), respectively. Positioning plate (4), there are two positioning plates (4), and they are symmetrically arranged between the fixed module (9) and the moving module (11). The right side wall of the positioning plate (4) is inclined to one side of the fixed module (9) adjacent to the center of the fixed module (9). The distance between the two positioning plates (4) and the adsorption block (1) is the same. The bottom side of the adjacent side wall of the two positioning plates (4) is provided with a bottom plate (5). Fixed blocks (6), there are two fixed blocks (6), and they are symmetrically fixed on the right side wall of the fixed frame (10). The fixed blocks (6) are slidably set in the groove on the side wall of the adjacent positioning plate (4) by a slider. Tension spring (7), there are several tension springs (7), and they are equally and equally spaced and fixed in the grooves on the side wall of the positioning plate (4). The other end of the tension spring (7) is fixedly connected to the slider on the fixing block (6). Support mechanism (8), there are two support mechanisms (8), and they are symmetrically arranged on the fixed frame (10) outside the fixed module (9). The support mechanism (8) is connected to the positioning plate (4).

2. The insert positioning structure for injection molds according to claim 1, characterized in that: The adsorption block (1) is fitted with a limiting ring (12) on one end of the fixed module (9), and the limiting ring (12) is slidably arranged in a cylindrical groove on the inner wall of the fixed module (9).

3. The insert positioning structure for injection molds according to claim 1, characterized in that: The support mechanism (8) includes: Support rod (8-1), there are two support rods (8-1), and they are symmetrically connected to the side wall of the positioning plate (4) adjacent to the positioning module (9) by a shaft. Support rod (8-2) is fixed on the other end of each support rod (8-1). The movable block (8-3) consists of two blocks, both of which are U-shaped. The movable blocks (8-3) are respectively sleeved and screwed onto the other end of the support connecting rod (8-2) via a shaft. The movable blocks (8-3) are slidably disposed in the groove on the outer wall of the fixed frame (10) outside the fixed module (9). The slide (8-4) consists of four slides, which are fixed symmetrically on the outer wall of the movable block (8-3) in pairs. The slides (8-4) are slidably set on the inner wall of the groove on the outer wall of the fixed frame (10).

4. The insert positioning structure for injection molds according to claim 1, characterized in that: The positioning plate (4) is fixed with a support frame (13) on one side wall adjacent to the fixed module (9). The support frame (13) is arranged in an "L" shape, and the support plate on the other side of the support frame (13) is movably inserted into the fixed block (6).

5. The insert positioning structure for injection molds according to claim 1, characterized in that: The positioning plate (4) is provided with a limiting groove (4-1) on one side wall adjacent to the adsorption block (1). The inner wall of the limiting groove (4-1) and the side wall of the adsorption block (1) extending out of the positioning module (9) are set in the same plane.

6. The insert positioning structure for injection molds according to claim 1, characterized in that: The upper surface of the base plate (5) is fixed with an internal threaded tube (14). The internal threaded tube (14) is embedded in the positioning plate (4). The strip groove on the outer ring wall of the internal threaded tube (14) is inserted into the inner wall of the positioning plate (4). The internal threaded tube (14) is screwed with a screw rod (15) through a thread. The upper end of the screw rod (15) is screwed into the positioning plate (4) through a bearing. The upper side of the right side wall of the positioning plate (4) is screwed with a drive rod (16) through a bearing. The drive rod (16) is connected to the upper end of the screw rod (15) through a worm gear pair.

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