Tunnel sliding block core-pulling structure capable of automatically locking mold

Abstract

The utility model relates to a tunnel sliding block core-pulling structure capable of automatically locking a mold, which comprises a sliding block used for extending into a mold frame tunnel, and a forming head consistent with a product is arranged at the head part of the sliding block; the tail part of the sliding block assembly is connected with a shovel base; the shovel base is driven by a linear driving module; a self-locking assembly is arranged on the shovel base, and in the mold closing state, the shovel base is locked to the mold frame through the self-locking assembly, so that the shovel base cannot drive the sliding block to exit from the tunnel; during mold opening, the linear driving module drives the shovel base to move, the self-locking assembly releases the lock, and the shovel base can drive the sliding block to exit outwards for mold opening; the shovel base is provided with a vacant stroke groove, and the linear driving module has an idle stroke in the vacant stroke groove and unlocks the self-locking assembly in the idle stroke state.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molds, and in particular to a tunnel slider core-pulling structure capable of automatic mold locking. Background Technology

[0002] In traditional injection mold design, hydraulic cylinders are generally only responsible for core pulling and not for direct sealing. If the hydraulic cylinder seals the mold directly without a clamping block on the back of the slide block, the pressure during injection will force the hydraulic cylinder to retract, preventing it from sealing properly and resulting in burrs or excess glue on the product.

[0003] Chinese patent document CN207841963U, published in 2017, discloses a fixed mold core-pulling self-locking slider mechanism. Specifically, it discloses a fixed mold fixing plate, a fixed template, a moving template, and a mold core, as well as a self-locking slider insert that forms the molded part of the product. The self-locking slider insert is connected to a self-locking inclined pressure block via a connecting mechanism to form a gap sliding fit. The opening and closing of the mold controls the movement of the self-locking slider insert, causing it to reciprocate within a specified spatial trajectory. However, this structure is complex and has high manufacturing costs.

[0004] Furthermore, due to the limited space in tunnel structures, it is impossible to install a self-locking structure. Therefore, the self-locking structure needs to be placed outside the tunnel, while also being able to lock the core-pulling slider inside the tunnel. Utility Model Content

[0005] In order to solve the above-mentioned problems in the prior art, this utility model provides a tunnel slider core-pulling structure that can automatically lock the mold.

[0006] The above-mentioned problems of this utility model are solved by the following technical solution:

[0007] A tunnel slider core-pulling structure capable of automatic mold locking includes a slider for extending into a mold frame tunnel, the head of the slider being provided with a forming head consistent with the product; the tail of the slider assembly is connected to a shovel base, the shovel base being driven by a linear drive module;

[0008] The shovel base is equipped with a self-locking component. In the mold closing state, the self-locking component locks the shovel base to the mold frame, preventing it from driving the slider to exit from the tunnel.

[0009] When the mold is opened, the linear drive module moves the shovel base, the self-locking component releases, and the shovel base can drive the slider to exit outward to open the mold;

[0010] The shovel base is provided with a free travel groove, the linear drive module has a free travel in the free travel groove, and releases the self-locking component in the free travel state.

[0011] By adopting the above technical solution, the self-locking component locks the shovel base to the mold frame in the mold-closed state, preventing the slider from retracting due to pressure during injection molding, ensuring the slider position is fixed, and effectively preventing defects such as burrs and excess glue in the product. Furthermore, the linear drive module first triggers the self-locking component to release / lock during the idle stroke, and then drives the shovel base to move the slider, realizing an automated process of "unlocking before core pulling" and "resetting before locking", reducing manual intervention and improving the stability of mold movements.

[0012] A further provision of the above technical solution is that the self-locking assembly includes a locking bar and a locking block, the locking block is fixed on the mold frame, and the locking bar is inserted into the shovel base from one side along the guide groove;

[0013] The locking block is provided with a locking groove that mates with the guide groove.

[0014] A further provision of the above technical solution is that: an inclined external driving surface is provided at the outer end of the lock bar; and an unlocking surface that cooperates with the external driving surface is provided on the groove wall of the lock groove.

[0015] A further provision of the above technical solution is that the self-locking component also includes a locking head, which moves synchronously with the output shaft of the linear drive module and can extend into the empty stroke groove to push out the locking bar.

[0016] A further provision of the above technical solution is that the locking head has a cross-shaped structure, with the two ends along the driving direction of the linear drive module being the driving end and the connecting end, respectively. The driving end extends between the two locking bars, and the connecting end is connected to the output head of the linear drive module.

[0017] A further provision of the above technical solution is that a locking groove is provided inside the shovel base between the two guide grooves, the locking groove is connected to the empty stroke groove, and the driving end of the linear drive module can extend into the locking groove to push out the locking bar.

[0018] A further provision of the above technical solution is that the shovel base and the slider are driven together by an inclined guide rail structure, and the driving direction of the linear drive module is perpendicular to the moving direction of the slider.

[0019] By adopting the above technical solution, the shovel base and the slider are connected by a slanted guide rail structure, and the driving direction of the linear drive module is perpendicular to the slider movement direction, which effectively utilizes the mold space and reduces the overall volume.

[0020] A further configuration of the above technical solution is as follows: the slider includes a slider head and a connecting block, the forming head is located at the head of the slider head, and the connecting block and the tail of the slider head are connected by an L-shaped structure.

[0021] A further provision of the above technical solution is that the surface of the mold frame is provided with anti-wear blocks to limit the position of the shovel base.

[0022] By adopting the above technical solution, anti-wear blocks are set on the surface of the mold frame to limit the movement position of the shovel base, avoid direct impact between the shovel base and the mold frame, reduce mold wear and vibration, and lower maintenance costs.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] 1. The self-locking component locks the shovel base to the mold frame in the mold-closed state, avoiding the slide block from retracting due to pressure during injection molding (a problem that easily occurs when using traditional hydraulic cylinders for direct sealing), ensuring the slide block position is fixed and effectively preventing defects such as burrs and excess glue in the product;

[0025] 2. The self-locking component is set outside the tunnel. Through structural design such as guide groove and empty stroke groove, it can reliably lock the slider inside the tunnel in a limited space, which solves the problem that it is difficult to set a self-locking structure in traditional tunnel structures due to the limited space. At the same time, the shovel base and the slider are driven and connected by the inclined guide rail structure, and the driving direction of the linear drive module is perpendicular to the slider movement direction (such as vertical drive for horizontal core pulling), which effectively utilizes the mold space and reduces the overall volume.

[0026] 3. The linear drive module first triggers the self-locking component to release / lock through the idle stroke, and then drives the shovel base to move the slider, realizing the automated process of "unlocking before core pulling" and "resetting before locking", reducing manual intervention and improving the stability of mold movement. Attached Figure Description

[0027] Figure 1 This is a side view of the present invention.

[0028] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0029] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0030] Figure 4 This is a schematic diagram of a slider core-pulling structure.

[0031] Figure 5 This is an exploded structural diagram of the slider core-pulling structure.

[0032] Figure 6 This is a cross-sectional schematic diagram of the slider core-pulling structure in the self-locking state.

[0033] Figure 7 This is a cross-sectional schematic diagram of the slider core-pulling structure in the unlocked state.

[0034] The attached diagram is labeled: 100, mold frame;

[0035] 200. Slider; 211. Forming head; 210. Slider head; 220. Connecting block; 221. T-shaped guide rail;

[0036] 300. Shovel base; 301. Empty travel groove; 302. Guide groove; 303. Locking groove;

[0037] 400. Linear drive module;

[0038] 500. Self-locking component; 510. Lock block; 520. Lock bar; 530. Lock stop head; 511. Lock groove; 511.1. Unlocking surface; 521. Outer drive surface; 522. Inner drive surface;

[0039] 1. Product; 2. Anti-wear block. Detailed Implementation

[0040] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0041] like Figure 1-7 As shown in the figure, this embodiment discloses a tunnel slider core-pulling structure that can automatically lock the mold.

[0042] A tunnel slider 200 core-pulling structure capable of automatic mold locking includes a slider 200 for extending into the tunnel of the mold frame 100. The head of the slider 200 is provided with a forming head 211 that is consistent with the product 1. The tail of the slider 200 is connected to a shovel base 300, which is driven by a linear drive module 400.

[0043] The shovel base 300 is provided with a self-locking component 500. In the mold closing state, the self-locking component 500 locks the shovel base 300 to the mold frame 100, preventing it from driving the slider 200 to exit from the tunnel.

[0044] When the mold is opened, the linear drive module 400 drives the shovel base 300 to move, the self-locking component 500 is released, and the shovel base 300 can drive the slider 200 component to exit outward to open the mold;

[0045] The shovel base 300 is provided with a free travel groove 301, the linear drive module 400 has a free travel in the free travel groove 301, and releases the self-locking component 500 in the free travel state.

[0046] The above is the basic scheme of this embodiment.

[0047] Specific reference Figure 1 and Figure 2As shown, the mold frame 100 has a tunnel connecting the injection cavity and the outside of the mold. The slider 200 extends into the tunnel, and at least its head extends into the injection cavity to form product 1. In this embodiment, the part to be formed is the texture on the side of the protrusion on product 1. Therefore, in this embodiment, two sets of slider 200 core-pulling assemblies are symmetrically arranged, and both forming heads 211 are set as semi-circular grooves, which can be spliced ​​together to form a complete outer periphery of the protrusion in the mold-closed state. See the specific reference. Figure 3 As shown.

[0048] The tail of the slider 200 is connected to the shovel base 300, and the shovel base 300 is equipped with a linear drive module 400. The linear drive module 400 drives the shovel base 300 to move outward, thereby pulling the slider 200 outward.

[0049] To prevent impact between the surfaces of the shovel base 300 and the mold frame 100, in this embodiment, the surface of the mold frame 100 is provided with anti-wear blocks 2 to limit the position of the shovel base 300.

[0050] The anti-wear block 2 is fixed on the surface of the mold frame 100. When the shovel base 300 moves toward the mold frame 100 under the action of the linear drive module 400, it stops moving after contacting the anti-wear block 2, thereby avoiding the shovel base 300 from directly contacting the mold frame 100 and causing damage or vibration to the mold frame 100.

[0051] The shovel base 300 is equipped with a self-locking component 500, which locks the shovel base 300 onto the mold frame 100. In other words, in the locked state, the shovel base 300 cannot move relative to the mold frame 100, and thus cannot drive the slider 200 to slide out of the tunnel.

[0052] When the mold is opened, the linear drive module 400 starts and first travels a short distance in the empty stroke groove 301 of the shovel base 300. When the drive head of the linear drive module 400 moves to the end of the empty stroke groove 301, the self-locking component 500 unlocks. At this time, the linear drive module 400 continues to move and can drive the shovel base 300, thereby driving the slider 200 to be pulled out along the tunnel. The forming head 211 is ejected from the product 1, and the demolding is completed.

[0053] When the mold is closed, the linear drive module 400 drives the shovel base 300 to move, causing the slider 200 to extend into the tunnel, and the molding head 211 extends into the injection cavity and is spliced ​​and combined with the opposite molding head 211. At the same time, the linear drive module 400 continues to move, causing the self-locking component 500 to self-lock, locking the shovel base 300 on the mold frame 100.

[0054] Preferably, in this embodiment, the linear drive module 400 is a drive motor.

[0055] Based on the above settings, in this embodiment, a free stroke is set between the linear drive module 400 and the shovel base 300 to lock and unlock the self-locking component 500, which can ensure that the position of the shovel base 300 is fixed during the injection molding process, thereby ensuring that the slider 200 will not come out of the tunnel during the injection molding process and ensuring the injection molding quality.

[0056] Specifically, the self-locking assembly 500 includes a locking bar 520 and a locking block 510. The locking block 510 is fixed on the mold frame 100, and the locking bar 520 is inserted into the shovel base 300 from one side along the guide groove 302.

[0057] The locking block 510 is provided with a locking groove 511 that cooperates with the guide groove 302.

[0058] Reference Figures 3-5 As shown, the locking block 510 is a block-shaped structure fixed on the mold frame 100. A locking groove 511 is provided on the side of the locking block 510 facing the shovel base 300. Simultaneously, a guide groove 302 is provided on the shovel base 300, communicating with the outside through the empty stroke groove 301. The locking bar 520 is movably disposed within the guide groove 302. When an external force pushes the locking bar 520 outward from the side located in the empty stroke groove 301, the outer end of the locking bar 520 engages with the locking groove 511, thus locking the shovel base 300 and the locking block 510. (See attached diagram for details.) Figure 6 As shown.

[0059] In order to unlock the self-locking component 500, in this embodiment, the outer end of the lock bar 520 is provided with an inclined outer driving surface 521; the groove wall of the lock groove 511 is provided with an unlocking surface 511.1 that cooperates with the outer driving surface 521.

[0060] Please refer to the specific reference. Figure 6 and Figure 7 As shown, the outer driving surface 521 is disposed on the upper end surface of the lock bar 520, which is in the same driving direction as the linear drive module 400. In this embodiment, in order to ensure the symmetry of the lock bar 520, two outer driving surfaces 521 are symmetrically arranged, and the inclination direction is towards the center of the outer end. At the same time, the mating surfaces on the lock groove 511 are disposed on the upper and lower groove walls of the lock groove 511, and the inclination direction is in sync with the outer driving surface 521.

[0061] When the inner side of the locking bar 520 is not under force, the linear drive module 400 drives the shovel base 300 to move, and the locking bar 520 located on the shovel base 300 also moves accordingly. During the movement, an interaction force inclined to the outer drive surface 521 and the unlocking surface 511.1 is generated between them. The unlocking force generated by the unlocking surface 511.1 on the outer drive surface 521, along the component of the force perpendicular to the drive direction, is directed towards the center of the shovel base 300. Thus, the locking bar 520 is pushed towards the center of the shovel base 300, and the outer end of the locking bar 520 disengages from the lock groove 511, completing the unlocking process. See details below. Figure 7 As shown.

[0062] In this embodiment, the locking method of the locking bar 520 is set as follows: the self-locking component 500 further includes a locking head 530, the locking head 530 moves synchronously with the output shaft of the linear drive module 400, and can extend into the empty stroke groove 301 to push out the locking bar 520.

[0063] When it is necessary to lock the shovel base 300, the linear drive module 400 moves in the opposite direction, pushing the slider 200 into the tunnel through the shovel base 300. After it is pushed into place, the linear drive module 400 continues to move, causing the locking head 530 to move in the empty stroke groove 301, pushing the locking bar 520 outward.

[0064] Preferably, in this embodiment, the inner end of the locking bar 520 also has an inner driving surface 522 that is consistent with the outer driving surface 521 on the outer side. The driving head applies force to the driving surface, and its component force pushes the locking bar 520 outward, so that the outer end of the locking bar 520 is engaged in the locking groove 511, thus completing the locking.

[0065] Preferably, in this embodiment, the locking head 530 has a cross-shaped structure, with the two ends along the driving direction of the linear drive module 400 being the driving end and the connecting end, respectively. The driving end extends between the two locking bars 520, and the connecting end is connected to the output head of the linear drive module 400.

[0066] Preferably, in this embodiment, a locking groove 303 is provided inside the shovel base 300 between the two guide grooves 302. The locking groove 303 is connected to the empty stroke groove 301, and the driving end of the linear drive module 400 can extend into the locking groove 303 to push out the locking bar 520.

[0067] Specific reference Figure 7 As shown, the two guide grooves 302 on the shovel base 300 are on the same horizontal line and are connected in the middle by the locking groove 303. At the same time, the upper port of the locking groove 303 is connected to the empty stroke groove 301. When the locking head 530 moves along the empty stroke groove 301, the drive end can extend into the locking groove 303 to push out the locking bars 520 on both sides and lock the shovel base 300.

[0068] Based on the above configuration, a locking head 530 simultaneously pushes out the locking bars 520 on both sides, so that the shovel base 300 is locked onto the locking blocks 510 on both sides in a synchronized manner, ensuring the stability of the shovel base 300 during the locking process.

[0069] Furthermore, the two side ends of the locking head 530 are confined within the empty travel groove 301, allowing for empty travel within the empty travel groove 301. The empty travel groove 301, the locking groove 303, and the guide groove 302 form an I-shaped structure.

[0070] Preferably, in order to reduce the space occupied by the mold, in this embodiment, the shovel base 300 and the slider 200 are driven to be connected by an inclined guide rail structure, and the driving direction of the linear drive module 400 is perpendicular to the moving direction of the slider 200.

[0071] Preferably, the linear drive module 400 moves along the vertical direction of the mold, and at the same time, drives the locking head 530 to move up and down in the empty stroke groove 301. When the mold is opened, when the linear drive module 400 drives the locking head 530 to the uppermost end of the empty stroke groove 301, it drives the shovel base 300 to move upward. Due to the effect of the inclined guide rail structure, the slider 200 is driven to move outward in the horizontal direction and exit along the tunnel.

[0072] In this embodiment, an inclined guide groove is provided on the shovel base 300, and a T-shaped guide rail 221 that cooperates with the guide groove is provided at the end of the slider 200.

[0073] The movement method of the inclined guide rail structure is consistent with the existing mold structure that changes the driving direction through the inclined guide rail structure, and will not be elaborated here.

[0074] Based on the above configuration, the shovel base 300 and the slider 200 are connected by a slanted guide rail structure, and the driving direction of the linear drive module 400 is perpendicular to the moving direction of the slider 200, which effectively utilizes the mold space and reduces the overall volume.

[0075] In this embodiment, the slider 200 includes a slider 200 head and a connecting block 220. The forming head 211 is located at the head of the slider 200 head, and the connecting block 220 and the tail of the slider 200 head are connected by an L-shaped structure.

[0076] Specific reference Figure 3 and Figure 5As shown, the T-shaped guide rail 221 is formed at the tail of the connecting block 220 and is connected to the guide groove on the shovel base 300; the head of the connecting block 220 is provided with an L-shaped extension, and at the same time, the tail of the forming head 211 is provided with an L-shaped extension that is symmetrical to the center of the head of the connecting block 220 and has the same structure. The two extensions are connected to each other, so that the forming head 211 and the connecting block 220 form an integral structure in the pushing direction. When the connecting block 220 moves outward, it can bring out the head of the slider 200. When the connecting head moves inward, it pushes the head of the slider 200 to move.

[0077] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A tunnel slider (200) core-pulling structure capable of automatic mold locking, characterized in that: Includes a slider (200) for extending into the tunnel of the mold frame (100), the head of the slider (200) is provided with a forming head (211) consistent with the product (1); the tail of the slider (200) is connected to a shovel base (300), the shovel base (300) is driven by a linear drive module (400); The shovel base (300) is provided with a self-locking component (500). In the mold closing state, the self-locking component (500) locks the shovel base (300) onto the mold frame (100), preventing it from driving the slider (200) to exit from the tunnel. When the mold is opened, the linear drive module (400) drives the shovel base (300) to move, the self-locking component (500) is released, and the shovel base (300) can drive the slider (200) to exit outward to open the mold; The shovel base (300) is provided with a free travel groove (301), the linear drive module (400) has a free travel in the free travel groove (301), and releases the self-locking component (500) in the free travel state.

2. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 1, characterized in that: The self-locking assembly (500) includes a locking bar (520) and a locking block (510), the locking block (510) being fixed on the mold frame (100), and the locking bar (520) being inserted into the shovel base (300) from one side along the guide groove (302); The locking block (510) is provided with a locking groove (511) that cooperates with the guide groove (302).

3. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 2, characterized in that: The outer end of the lock bar (520) is provided with an inclined outer driving surface (521); the groove wall of the lock groove (511) is provided with an unlocking surface (511.1) that cooperates with the outer driving surface (521).

4. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 2 or 3, characterized in that: The self-locking assembly (500) also includes a locking head (530), which moves synchronously with the output shaft of the linear drive module (400) and can extend into the empty stroke groove (301) to push out the locking bar (520).

5. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 4, characterized in that: The locking head (530) has a cross-shaped structure. The two ends along the driving direction of the linear drive module (400) are the driving end and the connecting end, respectively. The driving end extends between the two locking bars (520), and the connecting end is connected to the output head of the linear drive module (400).

6. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 5, characterized in that: A locking groove (303) is provided inside the shovel base (300) between two guide grooves (302). The locking groove (303) is connected to the empty stroke groove (301). The driving end of the linear drive module (400) can extend into the locking groove (303) to push out the locking bar (520).

7. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 1, characterized in that: The shovel base (300) and the slider (200) are connected by a slanted guide rail structure, and the driving direction of the linear drive module (400) is perpendicular to the moving direction of the slider (200).

8. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 1, characterized in that: The slider (200) includes a slider (200) head and a connecting block (220). The forming head (211) is located at the head of the slider (200) head, and the connecting block (220) and the tail of the slider (200) head are connected by an L-shaped structure.

9. The tunnel slider (200) core-pulling structure capable of automatic mold locking according to claim 1, characterized in that: The surface of the mold frame (100) is provided with anti-wear blocks (2) for limiting the position of the shovel base (300).

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