Sliding driving type forced resetting device for needle plate

Abstract

The utility model discloses a sliding drive type forcible resetting device for a needle plate, which comprises a resetting rod, a limiting block and a sliding block, the top of the resetting rod is fixedly connected with one side of a fixed template, the bottom of the resetting rod is abutted against the limiting block, and the resetting rod is connected with one side of a movable template in a sliding manner; the limiting block is fixedly connected with the fixing plate, a sliding block is arranged on one side of the limiting block in a sliding mode, sliding slopes are correspondingly arranged on the opposite sides of the sliding block and the limiting block respectively, and the sliding block and the limiting block are connected in a sliding mode through the adjacent sliding slopes. The sliding block is in sliding connection with the ejector base plate, and a spring is arranged between the sliding block and the ejector base plate; the sides, close to each other, of the top of the sliding block and the bottom of the reset rod are correspondingly provided with abutting-pressing slopes, and the adjacent abutting-pressing slopes are in sliding connection. The lower portion, corresponding to the reset rod, of the sliding block is provided with a limiting abutting face. Through the cooperation of the sliding block, the limiting block and the reset rod, the overall reset of the needle plate is realized, the space of the reset structure is reduced, and the practicability is better.

Description

Technical Field

[0001] This utility model belongs to the technical field of injection molds, and specifically relates to a sliding drive type needle plate forced reset device. Background Technology

[0002] The automotive sub-instrument assembly refers to the control and storage platform located between the driver and front passenger seats. It is typically manufactured using injection molding. With the rapid development of the automotive industry, the quality requirements for plastic parts in automotive sub-instrument assemblies are becoming increasingly stringent, necessitating continuous updates and improvements to the injection molding process. When designing injection molds, it is necessary to design the reset structure of the injection pin plate, such as... Figure 1 As shown, the commonly used needle plate forced reset structure in ordinary injection molds is a rocker arm-like mechanism. The biggest drawback of this mechanism is the large amount of space it requires. This leads to many molds lacking the space to design a forced reset structure, or sacrificing significant space to accommodate it. During operation, after mold opening, the face and bottom needle plates are pushed upwards by the injection molding machine or hydraulic cylinder. The limiting block pushes against the rocker arm, causing it to rotate. Therefore, the space for the rocker arm to rotate cannot contain anything. In actual design, it often interferes with parts such as lifting rings and mold feet, easily leading to interference. For example, CN207359541U discloses a mechanical forced return ejector pin device. This device is located on the outer side of the injection mold and includes a reset rod, an ejector plate fixing block, and a reset rod stop block, a rotation limit block, and a rotation push block respectively located on the moving mold plate. The reset rod stop block is located on one side of the reset rod and contacts the reset rod body. The rotation push block and the ejector plate fixing block are both located on the other side of the reset rod. The top of the rotation push block is rotatably connected to the moving mold plate and contacts the reset rod body and the ejector plate fixing block respectively. The rotation limit block is located between the reset rod and the rotation push block. The side of the reset rod that contacts the rotation push block is a concave slope. Utility Model Content

[0003] The purpose of this invention is to provide a sliding drive type needle plate forced reset device, which realizes the overall reset of the needle plate through the cooperation of slider, limit block and reset rod, reduces the reset structure space and has good practicality.

[0004] This utility model is mainly achieved through the following technical solutions:

[0005] A sliding-driven needle plate forced reset device includes a reset rod, a limiting block, and a slider. The top of the reset rod is fixedly connected to one side of a fixed template, and the bottom abuts against the limiting block. The reset rod is slidably connected to one side of a moving template. The limiting block is fixedly connected to a fixed plate, and a slider is slidably disposed on one side of the limiting block. Sliding inclined surfaces are respectively disposed on the opposite side of the slider and the limiting block, and the slider and the limiting block are slidably connected through adjacent sliding inclined surfaces. The slider is slidably connected to a bottom needle plate, and a spring is disposed between the slider and the bottom needle plate. A pressing inclined surface is respectively disposed on the top of the slider and the bottom of the reset rod, and adjacent pressing inclined surfaces are slidably connected. A limiting abutment surface is disposed on the lower part of the slider corresponding to the reset rod.

[0006] To better realize this utility model, the slider is further described as having an L-shaped structure, the inner sidewall of the slider is a limiting abutment surface, and a spring is provided between the outer sidewall of the slider and the bottom pin plate.

[0007] To better realize this utility model, pressure strips are provided on both sides of the slider, and sliding bosses are provided on both sides of the slider corresponding to the pressure strips. The pressure strips are located above the sliding bosses, and the pressure strips are fixedly connected to the bottom needle plate. A slider is slidably arranged between the pressure strips and the bottom needle plate.

[0008] To better realize this utility model, the bottom pin plate is further provided with a sliding groove corresponding to the slider, and pressure strips are provided on both sides of the sliding groove, and the sliding boss is slidably connected to the sliding groove.

[0009] To better realize this utility model, further, guide blocks are respectively provided on both sides of the middle part of the reset rod, the guide blocks are fixedly installed on one side of the moving template, and the reset rod is slidably arranged between adjacent guide blocks.

[0010] To better realize this utility model, a limiting surface is further provided on one side of the bottom of the reset rod corresponding to the top of the limiting block, and a pressing inclined surface is provided on the other side of the bottom of the reset rod corresponding to the slider.

[0011] To better realize this utility model, the top of the bottom needle plate is further fixedly mounted with a face needle plate by screws.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention utilizes a limiting block, a reset rod, and a spring to jointly drive the slider to slide along an inclined plane, thereby achieving the lifting and resetting of the entire needle plate (bottom needle plate and top needle plate). This invention cleverly combines the forced reset function with the slider's motion principle, making the forced reset structure of the needle plate more widely applicable and more stable. The structure of this invention offers higher operational stability and requires less space, effectively solving the problem of insufficient mold space and demonstrating good practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an existing rocker arm type forced reset mechanism;

[0015] Figure 2 This is a schematic diagram of the installation structure of the sliding drive type needle plate forced reset device of this utility model;

[0016] Figure 3 This is a schematic diagram of the sliding drive type needle plate forced reset device of this utility model;

[0017] Figure 4 for Figure 3 The main view;

[0018] Figure 5 This is a schematic diagram of the connection structure between the slider, the limit block, and the reset rod.

[0019] Figure 6 This is a schematic diagram of the connection structure between the slider and the limiting block;

[0020] Figure 7 for Figure 6 The main view;

[0021] Figure 8 This is a schematic diagram of the slider being pushed out of the water.

[0022] Figure 9 This is a schematic diagram of the structure for resetting the slider by pressing the reset rod.

[0023] Among them: 1-Reset rod, 2-Guide block, 3-Limit block, 4-Pressure strip, 5-Spring, 6-Slider, 8-Face needle plate, 9-Bottom needle plate, 10-Fixed template, 11-Moving template, 12-Fixed plate, 13-Sliding inclined surface, 14-Pressure inclined surface. Detailed Implementation

[0024] Example 1:

[0025] A sliding-drive type needle plate forced reset device, such as Figures 2-5 As shown, it includes a reset rod 1, a limit block 3, and a slider 6, as follows: Figure 2As shown, the top of the reset rod 1 is fixedly connected to one side of the fixed template 10 by screws, and the bottom end abuts against the top of the limiting block 3. Guide blocks 2 are respectively provided on both sides of the reset rod 1, and the reset rod 1 is slidably arranged between adjacent guide blocks 2. The guide blocks 2 are fixedly connected to one side of the moving template 11. The limiting block 3 is fixedly connected to the fixed plate 12. An L-shaped slider 6 is provided on one side of the limiting block 3. The slider 6 is slidably arranged on the bottom pin plate 9, and a spring 5 is provided between the slider 6 and the bottom pin plate 9. Sliding inclined surfaces 13 are respectively provided on the side of the slider 6 opposite to the limiting block 3. Pressing inclined surfaces 14 are respectively provided on the top side of the slider 6 and the side of the bottom of the reset rod 1, and adjacent sliding inclined surfaces 13 and adjacent pressing inclined surfaces 14 are slidably connected. The inner wall of the L-shaped slider 6 is a limiting abutment surface corresponding to the lower part of the reset rod 1, that is, the inner side of the L-shaped slider 6 slidably abuts against one side of the lower part of the reset rod 1.

[0026] Preferably, such as Figure 6 and Figure 7 As shown, pressure strips 4 are respectively provided on both sides of the slider 6, and sliding bosses are respectively provided on both sides of the slider 6 corresponding to the pressure strips 4. The pressure strips 4 are located above the sliding bosses, and the pressure strips 4 are fixedly connected to the bottom pin plate 9. The slider 6 is slidably arranged between the pressure strips 4 and the bottom pin plate 9. Further, the bottom pin plate 9 is provided with a sliding groove corresponding to the slider 6, and pressure strips 4 are respectively provided on both sides of the sliding groove. The sliding bosses are slidably connected to the sliding groove.

[0027] During the use of this utility model, such as Figure 2 As shown, in the initial state, the lower part of the reset rod 1 extends into the inner side of the L-shaped slider 6 and slides against the inner side of the slider 6. One bottom side of the reset rod 1 abuts against the top of the limiting block 3. The slider 6 slides against the sliding inclined surface 13 of the limiting block 3. Under the action of the reset rod 1, the spring 5 is in a compressed state. Figure 8 As shown, when the reset rod 1 is pulled upward and completely disengaged from the inner side of the slider 6, the slider 6 moves to the left and upward under the action of the spring 5 and the adjacent sliding inclined surface 13. At this time, the reset rod 1 is located above the slider 6. Figure 9 As shown, when the reset rod 1 moves downward, the pressing inclined surface 14 of the reset rod 1 slides and presses against each other with the pressing inclined surface 14 at the top of the slider 6, and under the action of the adjacent sliding inclined surface 13, the slider 6 is jointly driven to move to the right and downward. At this time, the spring 5 is in a compressed state again.

[0028] Example 2:

[0029] A sliding-drive type needle plate forced reset device, such as Figures 2 to 7As shown, it mainly includes a reset rod 1, a guide block 2, a limit block 3, a pressure strip 4, a spring 5, a slider 6, a screw, a fixed template 10 (also known as plate A), a moving template 11 (also known as plate B), a face needle plate 8, a bottom needle plate 9, and a fixing plate 12.

[0030] One end of the reset rod 1 is fixedly installed on the fixed platen 10. When the mold opens under the action of the injection molding machine, causing the fixed platen 10 and the moving platen 11 to separate, the reset rod 1 moves upward with the fixed platen 10. Figure 8 As shown, at this time, there are no mutually blocking parts on slider 6. Simultaneously, slider 6 is pushed forward by spring 5, achieving the ejection state. When the mold, under the action of the injection molding machine's mold closing action, drives the fixed platen 10 and the moving platen 11 to close, as... Figure 9 As shown, as the fixed template 10 gradually approaches the moving template 11, the reset rod 1 moves accordingly and gradually approaches and presses against the slider 6. Under the action of the reset rod 1 and the pressing action of the pressure strip 4, the slider 6 moves downward and backward, moving to the reset state of the bottom needle plate 9 and the front needle plate 8. The guide block 2 is installed on the moving template 11, and its function is to provide a movement guide for the reset rod 1 when the mold is opened and closed. The power for opening and closing the mold is provided by the injection molding machine. The slider 6 is installed on the bottom needle plate 9, and its function is to press the slider 6 to move to the needle plate reset state as the reset rod 1 moves. The limit block 3 is installed on the fixed plate 12, and its function is to limit the slider 6.

[0031] Working principle: The front and rear molds open → the pin plate ejects → the slider 6, under the action of the inclined surface of the limiting block 3, is ejected upward along with the front pin plate 8 and the bottom pin plate 9. The front pin plate 8 and the bottom pin plate 9 are connected together by screws and can be viewed as a whole during the movement. Figure 8 As shown, under the action of the pressure bar 4 and the spring 5, the slider 6 moves forward relative to the face needle plate 8 and the bottom needle plate 9. During reset, the reset rod 1 presses the slider 6 downward, achieving the function of resetting the needle plate. At the same time, under the action of the limit block 3, the slider 6 resets to its initial state.

[0032] like Figure 2As shown, this utility model achieves automatic positioning of the structure to the face pin plate 8 and bottom pin plate 9, and automatically adjusts the dimensions of each part of the combined structure, which is convenient, fast, and accurate, greatly saving design time and reducing the possibility of errors. This utility model is mainly used to achieve the forced reset function of the face pin plate 8 and bottom pin plate 9. If the face pin plate 8 and bottom pin plate 9 do not reset completely, it can easily lead to many mold problems. For example, when there is an ejector pin under the slider 6, if the face pin plate 8 and bottom pin plate 9 do not reset completely, the slider 6 will bend or even break the ejector pin, and the slider 6 will also be damaged. This utility model also helps to ensure product quality, because when the mold does not reset completely, the corresponding ejector rods, ejector blocks, and other structures on the mold will not reset completely, which will lead to defects such as ejector block marks and white spots on the product, and the surface finish of the product will also be worse. Therefore, this structure is very necessary in many situations. This utility model effectively solves the problem of insufficient space in other rocker-type forced reset structures, and this ingenious slider 6-type pin plate forced reset combination structure also has higher stability; this structure also helps to extend the life of the mold.

[0033] 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. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A slide drive type needle plate forced reset device characterized by, The assembly includes a reset rod (1), a limiting block (3), and a slider (6). The top of the reset rod (1) is fixedly connected to one side of the fixed template (10), and the bottom abuts against the limiting block (3). The reset rod (1) is slidably connected to one side of the moving template (11). The limiting block (3) is fixedly connected to the fixed plate (12), and a slider (6) is slidably provided on one side of the limiting block (3). The slider (6) and the limiting block (3) are respectively provided with sliding inclined surfaces (13) on opposite sides. The slider (6) and the limiting block (3) are slidably connected by adjacent sliding inclined surfaces (13); the slider (6) is slidably connected to the bottom needle plate (9), and a spring (5) is provided between the slider (6) and the bottom needle plate (9); the top of the slider (6) and the bottom of the reset rod (1) are respectively provided with a pressing inclined surface (14), and adjacent pressing inclined surfaces (14) are slidably connected; the slider (6) is provided with a limiting abutment surface at the lower part of the reset rod (1).

2. The slide drive type needle plate forced reset device according to claim 1, characterized by The slider (6) has an L-shaped structure. The inner wall of the slider (6) is a limiting contact surface, and a spring (5) is provided between the outer wall of the slider (6) and the bottom pin plate (9).

3. The slide drive type needle plate forcible return device according to claim 1 or 2, characterized by The slider (6) is provided with pressure strips (4) on both sides respectively. The slider (6) is provided with sliding bosses on both sides corresponding to the pressure strips (4). The pressure strips (4) are located above the sliding bosses. The pressure strips (4) are fixedly connected to the bottom needle plate (9). The slider (6) is slidably arranged between the pressure strips (4) and the bottom needle plate (9).

4. The slide drive type needle plate forcible return device according to claim 3, wherein The bottom pin plate (9) is provided with a sliding groove corresponding to the slider (6), and pressure strips (4) are provided on both sides of the sliding groove. The sliding boss is slidably connected to the sliding groove.

5. The slide drive type needle plate forcible return device according to claim 1 or 2, characterized by The reset rod (1) has guide blocks (2) on both sides of its middle section. The guide blocks (2) are fixedly installed on one side of the moving template (11). The reset rod (1) is slidably arranged between adjacent guide blocks (2).

6. The slide drive type needle plate forcible return device according to claim 1, wherein The bottom side of the reset rod (1) is provided with a limiting surface corresponding to the top of the limiting block (3), and the other side of the bottom of the reset rod (1) is provided with a pressing slope (14) corresponding to the slider (6).

7. The slide drive type needle plate forcible return device according to claim 1, wherein The top of the bottom needle plate (9) is fixedly mounted with a face needle plate (8) by screws.

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