Automatic ejection device for mold interchange insert

Abstract

The utility model discloses a mould interchange insert automatic ejection device which comprises an insert support and a lifting driving plate, the top of the insert support is provided with an insert accommodating cavity for inserting an insert, the left side and the right side of the insert support are respectively provided with a slide way, the two slide ways are both communicated with the insert accommodating cavity, and the lifting driving plate is connected with the insert accommodating cavity. Limiting sliding blocks capable of sliding left and right are arranged in the sliding ways, an elastic mechanism is connected between the two limiting sliding blocks and used for driving the two limiting sliding blocks to get close to each other, hooking parts bent towards the center direction of the insert containing cavity are formed at the tops of the limiting sliding blocks, and the hooking parts are used for hooking clamping openings in the two sides of the lower end of the insert. The lifting driving plate is arranged below the insert support and provided with a driving rod used for driving the two limiting sliding blocks to be relatively away from each other. According to the automatic insert positioning and ejection mechanism, automatic insert positioning and automatic ejection can be achieved, manual operation is not needed, it can be guaranteed that the insert is assembled in place, and working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a device for loading and unloading interchangeable inserts, and particularly to an automatic ejecting device for interchangeable inserts of a mold. Background Art

[0002] For a mold that requires matching interchangeable inserts, the interchangeable inserts need to be first inserted into the mold, then PIN pins are inserted into the interchangeable inserts, and then the mold is closed for injection molding so that the PIN pins and the workpiece are injection molded. When assembling and removing the interchangeable inserts, a manipulator is generally used in cooperation with manual operation, which not only has low work efficiency but also cannot ensure reliable positioning of the interchangeable inserts. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an automatic ejecting device for interchangeable inserts of a mold that can achieve automatic positioning of the inserts, does not require manual operation, and can automatically eject the inserts, aiming at the deficiencies of the prior art.

[0004] To solve the above technical problem, the utility model adopts the following technical solutions.

[0005] An automatic ejecting device for interchangeable inserts of a mold includes an insert support and a lifting drive plate. The top of the insert support is provided with an insert receiving cavity for inserting the insert. Slideways are respectively arranged on the left and right sides of the insert support, and both slideways communicate with the insert receiving cavity. A limit slider that can slide left and right is arranged in the slideway. An elastic mechanism is connected between the two limit sliders, and the elastic mechanism is used to drive the two limit sliders to approach each other. A hook portion that bends towards the center of the insert receiving cavity is formed at the top of the limit slider, and the hook portion is used to hook the bayonets on both sides of the lower end of the insert. The lifting drive plate is arranged below the insert support, and a drive rod for driving the two limit sliders to move relatively away is arranged on the lifting drive plate.

[0006] Preferably, a sliding sleeve is embedded at the bottom of the insert support, and the drive rod passes through the sliding sleeve and the two are in sliding fit.

[0007] Preferably, first bevel portions are formed at the bottoms of the opposite ends of the two limit sliders. When the drive rod rises, it abuts against the two first bevel portions, thereby driving the two limit sliders to move relatively away.

[0008] Preferably, second bevel portions are formed at the tops of the opposite ends of the two hook portions. When the insert is inserted downward into the insert receiving cavity, the lower end of the insert abuts against the two second bevel portions, thereby driving the two limit sliders to move relatively away.

[0009] Preferably, a slide rail protruding transversely is formed at the lower end of the limit slider, a chute recessed transversely is formed at the lower end of the slideway, and the slide rail is arranged in the chute and the two are in sliding fit.

[0010] Preferably, the elastic mechanism includes two linkage rods and at least one tension spring. At least one side of the insert support is provided with two waist-shaped grooves extending transversely. The waist-shaped grooves correspond to the limit sliders one by one. The two linkage rods respectively pass through the two waist-shaped grooves, and the linkage rods can slide relative to the waist-shaped grooves. The linkage rods are inserted into the limit sliders, and the tension spring is connected between the two linkage rods. The elastic force applied by the tension spring drives the two limit sliders to approach each other.

[0011] Preferably, the elastic mechanism includes two tension springs symmetrically arranged on both sides of the insert support. Two waist-shaped grooves are respectively formed at the front and rear sides of the insert support. The middle part of the linkage rod passes through the limit slider, and the two ends of the linkage rod respectively pass through two waist-shaped grooves opposite to each other front and back.

[0012] Preferably, transverse receiving grooves are formed on both the front and rear sides of the insert support, and the two tension springs are respectively arranged in the front and rear transverse receiving grooves.

[0013] Preferably, the waist-shaped grooves are formed at the bottom of the transverse receiving grooves.

[0014] The automatic ejecting device for interchangeable inserts of the mold disclosed by the present utility model involves an assembly step and an ejecting step during application. In the assembly step, first, the insert with a PIN needle is vertically inserted into the insert receiving cavity, and then the two limit sliders are driven to move away from each other, so that the lower end of the insert is inserted between the hook parts of the two limit sliders. Then, the two hook parts respectively hook into the bayonets on both sides of the lower end of the insert. After that, the mold is closed for injection molding. When the workpiece and the PIN needle are injection molded, the mold is opened and the ejecting step is executed. In the ejecting step, the lifting drive plate is used to drive the drive rod to rise, and the drive rod drives the two limit sliders to move away from each other relatively. At this time, the hooking relationship between the hook part and the bayonet can be released. When the drive rod continues to rise, the insert can be ejected from the insert receiving cavity. Compared with the prior art, the present utility model can not only realize the automatic insertion positioning and automatic ejection of the insert, but also does not require manual operation, which can not only ensure the in-place assembly of the insert, but also improve the work efficiency. Description of the Drawings

[0015] Figure 1 It is a cross-sectional view of the automatic ejecting device for interchangeable inserts of the mold of the present utility model;

[0016] Figure 2 It is an exploded view of the automatic ejecting device for interchangeable inserts of the mold of the present utility model;

[0017] Figure 3 This is a partial perspective view after the assembly of the automatic ejecting device for the interchangeable inserts of the mold of the present utility model;

[0018] Figure 4 This is a comparison view of the assembly steps of the automatic ejecting device for the interchangeable inserts of the mold of the present utility model;

[0019] Figure 5 This is a comparison view of the ejecting steps of the automatic ejecting device for the interchangeable inserts of the mold of the present utility model. Specific embodiments

[0020] The present utility model will be described in more detail below with reference to the accompanying drawings and embodiments.

[0021] The present utility model discloses an automatic ejecting device for interchangeable inserts of a mold. As shown in combination with Figures 1 to 3 , it includes an insert support 1 and a lifting drive plate 2. A insert receiving cavity 10 for inserting an insert 100 is formed at the top of the insert support 1. Slideways 11 are respectively formed on the left and right sides of the insert support 1, and both slideways 11 communicate with the insert receiving cavity 10. A limit slider 3 that can slide left and right is arranged in the slideway 11. An elastic mechanism 4 is connected between the two limit sliders 3. The elastic mechanism 4 is used to drive the two limit sliders 3 to approach each other. A hook portion 30 that bends towards the center direction of the insert receiving cavity 10 is formed at the top of the limit slider 3. The hook portion 30 is used to hook the bayonet openings 101 on both sides of the lower end of the insert 100. The lifting drive plate 2 is arranged below the insert support 1, and a drive rod 5 for driving the two limit sliders 3 to move relatively away from each other is arranged on the lifting drive plate 2.

[0022] The above structure involves assembly steps and ejecting steps during application. As shown in combination with Figure 4 and Figure 5 , in the assembly step, first, the insert 100 with PIN pins is vertically inserted into the insert receiving cavity 10, and then the two limit sliders 3 are driven to move away from each other, so that the lower end of the insert 100 is inserted between the hook portions 30 of the two limit sliders 3. Then, the two hook portions 30 are respectively hooked into the bayonet openings 101 on both sides of the lower end of the insert 100. After that, the mold is closed for injection molding. When the workpiece and the PIN pins are injection molded, the mold is opened and the ejecting step is executed. In the ejecting step, the lifting drive plate 2 is used to drive the drive rod 5 to rise, and the drive rod 5 drives the two limit sliders 3 to move relatively away from each other. At this time, the hooking relationship between the hook portion 30 and the bayonet opening 101 can be released. When the drive rod 5 continues to rise, the insert 100 can be ejected from the insert receiving cavity 10. Compared with the prior art, the present utility model can not only realize the automatic insertion and positioning and automatic ejection of the insert, but also does not require manual operation, which can not only ensure the in-place assembly of the insert, but also improve the work efficiency.

[0023] To ensure that the driving rod 5 moves up and down straightly, in this embodiment, please refer to Figure 1 and Figure 2 , a sliding sleeve 6 is embedded at the bottom of the insert support 1, and the driving rod 5 passes through the sliding sleeve 6 and the two are in sliding fit. In practical applications, the lifting drive plate 2 can be driven by an oil cylinder to move up and down, thereby ensuring that the driving rod 5 has sufficient driving ability.

[0024] Regarding the automatic cooperation relationship between the driving rod 5 and the two limit sliders 3, in this embodiment, first bevels 31 are formed at the bottoms of the opposite ends of the two limit sliders 3. When the driving rod 5 rises, it abuts against the two first bevels 31, thereby driving the two limit sliders 3 to move away from each other. Based on the abutting and cooperating relationship between the driving rod 5 and the two first bevels 31 in this embodiment, not only can the two limit sliders 3 be automatically separated under the drive of the driving rod 5, but also situations such as jamming can be avoided, and the linkage relationship is more reliable and flexible.

[0025] Correspondingly, the insert 100 can automatically drive the two limit sliders 3 to separate during the downward insertion process. Specifically, second bevels 32 are formed at the tops of the opposite ends of the two hook portions 30. When the insert 100 is inserted downward into the insert receiving cavity 10, the lower end of the insert 100 abuts against the two second bevels 32, thereby driving the two limit sliders 3 to move away from each other.

[0026] As a preferred method, a sliding rail 33 protruding transversely is formed at the lower end of the limit slider 3, and a sliding groove 13 recessed transversely is formed at the lower end of the slideway 11. The sliding rail 33 is arranged in the sliding groove 13 and the two are in sliding fit. Based on the above structure, it can be seen that in this embodiment, the limit slider 3 and the sliding rail 33 together form a slider with an inverted "T" cross-section, and the slideway 11 and the sliding groove 13 correspondingly form a groove with an inverted "T" cross-section. Based on the "T" shape cooperation relationship, it can ensure that the limit slider 3 slides smoothly and straightly transversely.

[0027] Regarding the preferred structure of the elastic mechanism 4, as shown in Figures 1 to 3 , the elastic mechanism 4 includes two linkage rods 40 and at least one tension spring 41. At least one side of the insert support 1 is provided with two waist-shaped grooves 14 extending transversely. The waist-shaped grooves 14 correspond to the limit sliders 3 one by one. The two linkage rods 40 respectively pass through the two waist-shaped grooves 14, and the linkage rods 40 can slide relative to the waist-shaped grooves 14. The linkage rods 40 are inserted into the limit sliders 3, and the tension spring 41 is connected between the two linkage rods 40. The two limit sliders 3 are driven to approach each other by the elastic force exerted by the tension spring 41.

[0028] In the above structure, two linkage rods 40 are respectively used to drive two limit sliders 3 to slide left and right. By connecting the tension spring 41 between the two linkage rods 40, the two limit sliders 3 obtain an elastic driving force to approach each other. When the insert 100 is inserted downward and the driving rod 5 moves upward, the elastic tension of the tension spring 41 needs to be overcome. The elastic driving ability of the above elastic mechanism 4 is better, and it can stably drive the two limit sliders 3 to approach each other.

[0029] To ensure the balance of the pulling forces on the front and rear sides, in this embodiment, the elastic mechanism 4 includes two tension springs 41. The two tension springs 41 are symmetrically arranged on both sides of the insert support 1. Two waist-shaped grooves 14 are respectively formed in the front and rear side parts of the insert support 1. The middle part of the linkage rod 40 passes through the limit slider 3, and the two end parts of the linkage rod 40 respectively pass through two waist-shaped grooves 14 that are opposite to each other in the front and rear.

[0030] As a preferred mode, transverse accommodation grooves 15 are formed in the front and rear side parts of the insert support 1, and the two tension springs 41 are respectively arranged in the front and rear transverse accommodation grooves 15. In the above structure, by arranging the transverse accommodation grooves 15, the tension springs 41 can be hidden in the transverse accommodation grooves 15, avoiding position interference between the tension springs 41 and other external components.

[0031] Furthermore, the waist-shaped grooves 14 are formed at the bottom of the transverse accommodation grooves 15.

[0032] On this basis, the present invention also relates to an automatic ejection method for a mold interchangeable insert, and this method is implemented based on the above-mentioned device, combined with Figures 1 to 5 As shown, the method includes:

[0033] Assembly step: Vertically insert the insert 100 into the insert accommodation cavity 10. By driving the two limit sliders 3 to move away from each other, the lower end of the insert 100 is inserted between the hook parts 30 of the two limit sliders 3, and the two hook parts 30 are respectively hooked in the bayonet openings 101 on both sides of the lower end of the insert 100.

[0034] Ejection step: Use the lifting drive plate 2 to drive the driving rod 5 to rise. The driving rod 5 drives the two limit sliders 3 to move away from each other relatively, and releases the hooking relationship between the hook parts 30 and the bayonet openings 101. The driving rod 5 continues to rise to eject the insert 100 from the insert accommodation cavity 10.

[0035] In the specific injection molding process of the present utility model, when the mold starts to work, first the PIN pins are assembled into the inserts, then the inserts are assembled into the mold. After that, the mold is closed and injection molding starts. After the injection molding is completed, when the front and rear molds are opened, the ejector base drives the slider to perform core-pulling movement. The lifting drive plate first drives the separation of the two limit sliders through the drive rod, and the drive rod continuously ejects to synchronously eject the insert from the mold, thereby completing the ejection step.

[0036] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements or improvements made within the technical scope of the present utility model shall be included within the scope protected by the present utility model.

Claims

1. An automatic ejection device for interchangeable inserts of a mold, characterized in that, It includes an insert support (1) and a lifting drive plate (2). A insert receiving cavity (10) for inserting an insert (100) is formed at the top of the insert support (1). Slideways (11) are respectively formed at the left and right sides of the insert support (1), and both of the two slideways (11) communicate with the insert receiving cavity (10). A limiting slider (3) capable of sliding left and right is arranged in the slideway (11). An elastic mechanism (4) is connected between the two limiting sliders (3). The elastic mechanism (4) is used to drive the two limiting sliders (3) to approach each other. A hook portion (30) bent towards the center of the insert receiving cavity (10) is formed at the top of the limiting slider (3). The hook portion (30) is used to hook the bayonets (101) on both sides of the lower end of the insert (100). The lifting drive plate (2) is arranged below the insert support (1), and a drive rod (5) for driving the two limiting sliders (3) to move relatively away from each other is arranged on the lifting drive plate (2).

2. The automatic ejection device for interchangeable inserts of a mold according to claim 1, characterized in that, A sliding sleeve (6) is embedded at the bottom of the insert support (1). The drive rod (5) passes through the sliding sleeve (6) and the two are in sliding fit with each other.

3. The automatic ejecting device for interchangeable inserts of a mold according to claim 1, characterized in that, First bevel portions (31) are formed at the bottoms of the opposite ends of the two limiting sliders (3). When the drive rod (5) ascends, it abuts against the two first bevel portions (31), thereby driving the two limiting sliders (3) to move relatively away from each other.

4. The automatic ejecting device for interchangeable inserts of a mold according to claim 1, wherein, Second bevel portions (32) are formed at the tops of the opposite ends of the two hook portions (30). When the insert (100) is inserted downward into the insert receiving cavity (10), the lower end of the insert (100) abuts against the two second bevel portions (32), thereby driving the two limiting sliders (3) to move relatively away from each other.

5. The automatic ejecting device for interchangeable inserts of a mold according to claim 1, wherein A slide rail (33) protruding transversely is formed at the lower end of the limiting slider (3). A chute (13) recessed transversely is formed at the lower end of the slideway (11). The slide rail (33) is arranged in the chute (13) and the two are in sliding fit with each other.

6. The automatic ejecting device for interchangeable inserts of a mold according to claim 1, characterized in that, The elastic mechanism (4) includes two linkage rods (40) and at least one tension spring (41). At least one side portion of the insert support (1) is provided with two horizontally extending waist-shaped slots (14). The waist-shaped slots (14) correspond to the limiting sliders (3) one by one. The two linkage rods (40) respectively pass through the two waist-shaped slots (14), and the linkage rods (40) can slide relative to the waist-shaped slots (14). The linkage rods (40) are inserted into the limiting sliders (3). The tension spring (41) is connected between the two linkage rods (40). The two limiting sliders (3) are driven to approach each other by the elastic force applied by the tension spring (41).

7. The automatic ejection device for interchangeable inserts of a mold according to claim 6, characterized in that, The elastic mechanism (4) includes two tension springs (41). The two tension springs (41) are symmetrically arranged on both sides of the insert support (1). Two waist-shaped slots (14) are respectively formed at the front and rear side portions of the insert support (1). The middle portion of the linkage rod (40) passes through the limiting slider (3). The two end portions of the linkage rod (40) respectively pass through the two waist-shaped slots (14) opposite to each other in the front and rear directions.

8. The automatic ejecting device for interchangeable inserts of a mold according to claim 7, characterized in that, The front and rear sides of the insert support (1) are both provided with transverse accommodation grooves (15), and two tension springs (41) are respectively arranged in the front and rear transverse accommodation grooves (15).

9. The automatic ejecting device for interchangeable inserts of a mold according to claim 8, characterized in that, The waist-shaped groove (14) is opened at the bottom of the transverse accommodation groove (15).

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