Injection mold for knapsack buckle production

Abstract

The injection mold comprises a left mold body and a right mold body, the right mold body is arranged outside the left mold body, an injection molding opening is formed in one side of the left mold body, an electric push rod is installed in the right mold body, and a rack is installed at the output end of the electric push rod. Two sets of supporting shafts are movably installed in the right mold on one side of the rack, the surfaces of the supporting shafts are sleeved with first gears, the first gears are meshed with the rack, the surfaces of the supporting shafts on one sides of the first gears are sleeved with second gears, and multiple sets of movable sleeves are fixedly installed in the right mold on one sides of the second gears; and rotating threaded sleeves are movably mounted in the movable sleeves. According to the utility model, not only are convenient and fast opposite movement away from the knapsack buckle and convenient and fast slope moving type output of the knapsack buckle realized, the knapsack buckle is convenient to eject out from inside to outside, but also the convenience and the flexibility of outputting the knapsack buckle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for producing backpack buckles. Background Art

[0002] A snap fastener is a mechanism used to embed or lock one part together, often used to connect plastic parts. It's typically made of a flexible plastic material. The key advantage of snap fasteners is their ease of installation and removal, allowing for tool-free disassembly. Snap fasteners are often injection molded. To better facilitate the production of backpack buckles, an injection mold for backpack buckles was developed.

[0003] For example, an injection mold for a buckle product disclosed in authorization publication number CN216782535U includes a fixed mold base plate, a fixed mold plate, a movable mold plate, an ejector plate, and a movable mold base plate, which are arranged in sequence. The ejector plate includes a first ejector plate and a second ejector plate. The first ejector plate is adjacent to the movable mold plate and is connected to a straight ejector. The second ejector plate is connected to an inclined ejector. The ejector rod of the injection molding machine is connected to the first ejector plate. A switching component for controlling the ejection stroke of the second ejector plate is provided on both sides of the injection mold.

[0004] Although it realizes a simple structure and saves costs, it uses the structure to automatically control the ejection stroke of the second ejector plate during the ejection stroke, avoiding the need to set other auxiliary equipment or robots on the mold;

[0005] However, the problem that the existing injection mold is not conducive to convenient opposite movement away from the backpack buckle and convenient inclined movable output of the backpack buckle during use is not solved, and it is not conducive to ejecting the backpack buckle from the inside out, affecting the convenience and flexibility of backpack buckle output. Utility Model Content

[0006] The purpose of the present utility model is to provide an injection mold for the production of backpack buckles, so as to solve the problem proposed in the above background technology that the injection mold is not convenient to move in the opposite direction away from the backpack buckle and the convenient inclined movable output of the backpack buckle, which is not conducive to ejecting the backpack buckle from the inside out, affecting the convenience and flexibility of the backpack buckle output.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold for producing backpack buckles, comprising a left mold and a right mold, wherein a right mold is provided on the outside of the left mold, an injection port is installed on one side of the left mold, an electric push rod is installed on the inside of the right mold, a rack is installed on the output end of the electric push rod, two sets of support shafts are movably installed inside the right mold on one side of the rack, the surfaces of the support shafts are all fitted with a first gear, and the first gear and the rack are meshed with each other, the surfaces of the support shafts on one side of the first gear are all fitted with a second gear, and the right mold on one side of the second gear is Multiple sets of movable sleeves are fixedly installed inside the mold, and rotating threaded sleeves are movably installed inside the movable sleeves. A limiting sleeve is installed on one side of the movable sleeve, and a limiting groove is installed on the inner wall of the limiting sleeve. A third gear is provided on the other side of the movable sleeve, and the third gear is connected to the rotating threaded sleeve. A push rod is slidably installed inside the third gear, and the push rod passes through the movable sleeve, the rotating threaded sleeve, and the limiting sleeve, and the push rod is threadedly connected to the rotating threaded sleeve. A limiting sliding key is installed on the side wall of the push rod, and the limiting sliding key is slidably connected to the limiting groove.

[0008] Preferably, a plurality of servo motors are installed inside the left mold, and the output ends of the servo motors are all installed with bidirectional threaded rods, and the bidirectional threaded rods are movably connected to the left mold.

[0009] Preferably, the surfaces of the bidirectional threaded rods are each covered with two sets of bidirectional threaded sleeves, and the bidirectional threaded sleeves are threadedly connected to the bidirectional threaded rods, and the bidirectional threaded sleeves are slidingly connected to the left mold.

[0010] Preferably, a limit plate is slidably installed inside the left mold on one side of the bidirectional threaded sleeve, and the limit plate is connected to the bidirectional threaded sleeve.

[0011] Preferably, a plurality of groups of first sliding blocks are installed on the side wall of the right mold, and a first sliding bar is installed on the side wall of each of the first sliding blocks.

[0012] Preferably, a first limiting block is provided on the outside of each of the first sliding blocks, and the first limiting block is slidably connected to the first sliding bar.

[0013] Preferably, a second slider is symmetrically installed on the right mold side wall on one side of the first slider, and a second slide bar is installed on the side wall of the second slider.

[0014] Preferably, a second limiting block is provided on the outside of each of the second sliding blocks, and the second limiting block is slidably connected to the second slide bar, and a special-shaped buckle is provided on one side of each of the second limiting blocks.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the injection mold not only realizes convenient opposite movement away from the backpack buckle and convenient inclined movable output of the backpack buckle, facilitates the ejection of the backpack buckle from the inside out, but also improves the convenience and flexibility of backpack buckle output;

[0016] (1) First, the left mold and the right mold are installed at the two ends of the processing position of the injection molding machine respectively, and the device is connected to the external controller and the external circuit. The injection molding machine injects the raw material into the mold through the injection port. Under the cooperation of the left mold and the right mold, the production of each backpack buckle in the mold is completed. The servo motor drives the bidirectional threaded rod to rotate, and the bidirectional threaded rod drives the two sets of bidirectional threaded sleeves to move in opposite directions. The bidirectional threaded sleeve drives the limit plate to move, so that the two sets of limit plates are separated from each other, so that the limit plate is separated from the backpack buckle, so as to facilitate the output of the backpack buckle produced by the limit plate clamping. The electric push rod drives the rack to move, and the rack drives The first gear rotates, and the first gear drives the second gear to rotate through the support shaft, and the second gear drives the third gear to rotate, and the third gear drives the rotating threaded sleeve to rotate inside the movable sleeve. Under the limited sliding support of the limiting sliding key and the limiting groove, the rotating threaded sleeve drives the ejector rod to move, and the ejector rod drives the limiting sliding key to slide inside the limiting groove, so that the ejector rod extends from the inside of the right mold to eject the backpack buckle produced on the side wall of the right mold, thereby further facilitating the output of the processed backpack buckle, realizing convenient opposite movement away from the backpack buckle, facilitating the ejection of the backpack buckle from the inside out, and improving the convenience of backpack buckle output;

[0017] (2) After the production of the backpack buckle is completed, the injection molding machine drives the left mold and the right mold to separate, and the left mold drives the first limit block and the second limit block to move respectively. The first limit block slides on the surface of the first slide bar, and the second limit block slides on the surface of the second slide bar. Because the first slide bar and the second slide bar are both designed as inclined surfaces, the first limit block and the second limit block will first bring out the special-shaped buckle when moving, and then the first limit block and the second limit block will move away from each other, and the special-shaped buckle will naturally fall off, thereby outputting the special-shaped buckle, realizing a convenient inclined movable output of the backpack buckle and improving the flexibility of output. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the limiting plate of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the special-shaped buckle of the present invention;

[0021] Figure 4 This is a schematic diagram of the top cross-sectional structure of the left mold of the present utility model;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of the push rod of the utility model;

[0023] Figure 6 This is a schematic diagram of the front cross-sectional structure of the movable sleeve of the utility model;

[0024] Figure 7 It is a schematic diagram of the front cross-sectional structure of the right mold of the present utility model.

[0025] In the figure: 1. Left mold; 2. Injection port; 3. Right mold; 4. Limit plate; 5. Servo motor; 6. Electric push rod; 7. Bidirectional threaded sleeve; 8. Bidirectional threaded rod; 9. Rack; 10. First gear; 11. Support shaft; 12. Push rod; 13. Second gear; 14. Movable sleeve; 15. Third gear; 16. Rotating threaded sleeve; 17. Limit groove; 18. Limit sleeve; 19. Limit slide key; 20. Special-shaped buckle; 21. First slide bar; 22. First slider; 23. First limit block; 24. Second slide bar; 25. Second slider; 26. Second limit block. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1-7 The utility model provides an embodiment: an injection mold for producing backpack buckles, including a left mold 1 and a right mold 3. The right mold 3 is provided on the outside of the left mold 1, and an injection port 2 is installed on one side of the left mold 1. An electric push rod 6 is installed inside the right mold 3. The electric push rod 6 plays a role of power drive. A rack 9 is installed at the output end of the electric push rod 6. Two sets of support shafts 11 are movably installed inside the right mold 3 on one side of the rack 9. The surfaces of the support shafts 11 are all covered with a first gear 10, and the first gear 10 and the rack 9 are meshed with each other. The surfaces of the support shafts 11 on one side of the first gear 10 are all covered with a second gear 13. The inside of the right mold 3 on one side of the second gear 13 is fixed. A plurality of movable sleeves 14 are installed, and a rotating threaded sleeve 16 is movably installed inside the movable sleeves 14. A limiting sleeve 18 is installed on one side of the movable sleeve 14, and a limiting groove 17 is installed on the inner wall of the limiting sleeve 18. A third gear 15 is provided on the other side of the movable sleeve 14, and the third gear 15 is connected to the rotating threaded sleeve 16. A push rod 12 is slidably installed inside the third gear 15, and the push rod 12 passes through the movable sleeve 14, the rotating threaded sleeve 16, and the limiting sleeve 18, and the push rod 12 is threadedly connected to the rotating threaded sleeve 16. A limiting sliding key 19 is installed on the side wall of the push rod 12, and the limiting sliding key 19 is slidably connected to the limiting groove 17;

[0028] First, install the left mold 1 and the right mold 3 at the two ends of the processing position of the injection molding machine respectively, connect the device with the external controller and the external circuit, and the injection molding machine injects raw materials into the mold through the injection port 2. With the cooperation of the left mold 1 and the right mold 3, the production of each backpack buckle in the mold is completed. At this time, turn on the servo motor 5, and the servo motor 5 drives the bidirectional threaded rod 8 to rotate. Under the threaded connection between the bidirectional threaded rod 8 and the bidirectional threaded sleeve 7, and the sliding cooperation between the bidirectional threaded sleeve 7 and the left mold 1, the bidirectional threaded rod 8 drives the two groups of bidirectional threaded sleeves 7 to move in opposite directions, and the bidirectional threaded sleeve 7 drives the limit plate 4 to move, so that the two groups of limit plates 4 are away from each other, so that the limit plate 4 is away from the backpack buckle, so as to facilitate the output of the backpack buckle produced by the limit plate 4. At the same time, turn on the electric push rod 6, and the electric push rod 6 drives the rack 9 to move. Under the mutual engagement of the rack 9 and the first gear 10 The rack 9 drives the first gear 10 to rotate, and the first gear 10 drives the second gear 13 to rotate through the support shaft 11. Under the mutual meshing of the second gear 13 and the third gear 15, the second gear 13 drives the third gear 15 to rotate, and the third gear 15 drives the rotating threaded sleeve 16 to rotate inside the movable sleeve 14. Under the threaded connection between the movable sleeve 14 and the ejector rod 12, and the limited sliding support of the limiting sliding key 19 and the limiting groove 17, the rotating threaded sleeve 16 drives the ejector rod 12 to move, and the ejector rod 12 drives the limiting sliding key 19 to slide inside the limiting groove 17, so that the ejector rod 12 extends from the inside of the right mold 3 to eject the backpack buckle produced on the side wall of the right mold 3, so as to further facilitate the output of the processed backpack buckle, realize convenient opposite movement away from the backpack buckle, facilitate the ejection of the backpack buckle from the inside out, and improve the convenience of backpack buckle output;

[0029] The left mold 1 is internally installed with multiple servo motors 5, which play the role of power drive. The output ends of the servo motors 5 are all installed with bidirectional threaded rods 8, and the bidirectional threaded rods 8 are movably connected to the left mold 1;

[0030] The surfaces of the bidirectional threaded rods 8 are both covered with two sets of bidirectional threaded sleeves 7, and the bidirectional threaded sleeves 7 are threadedly connected to the bidirectional threaded rods 8, and the bidirectional threaded sleeves 7 are slidably connected to the left mold 1;

[0031] A limit plate 4 is slidably installed inside the left mold 1 on one side of the bidirectional threaded sleeve 7, and the limit plate 4 is connected to the bidirectional threaded sleeve 7. Multiple sets of first sliders 22 are installed on the side wall of the right mold 3, and first slide bars 21 are installed on the side walls of the first sliders 22.

[0032] The first slider 22 is provided with a first limit block 23 on its exterior, and the first limit block 23 is slidably connected to the first slide bar 21. Second sliders 25 are symmetrically mounted on the side wall of the right mold 3 on one side of the first slider 22, and second slide bars 24 are mounted on the side walls of the second sliders 25.

[0033] The second slider 25 is provided with a second limit block 26 on its exterior, and the second limit block 26 is slidably connected to the second slide bar 24 , and a special-shaped buckle 20 is provided on one side of the second limit block 26 ;

[0034] When the backpack buckle is produced, the injection molding machine drives the left mold 1 and the right mold 3 to separate, and the left mold 1 drives the first limit block 23 and the second limit block 26 to move respectively. The first limit block 23 slides on the surface of the first slide 21, and the second limit block 26 slides on the surface of the second slide 24. Because the first slide 21 and the second slide 24 are both designed to be inclined, the first limit block 23 and the second limit block 26 will first bring out the special-shaped buckle 20 when moving, and then the first limit block 23 and the second limit block 26 move away from each other, and the special-shaped buckle 20 falls naturally, thereby outputting the special-shaped buckle 20, realizing convenient inclined movable output of the backpack buckle and improving the output flexibility.

[0035] Working principle: First, install the left mold 1 and the right mold 3 at the two ends of the processing position of the injection molding machine respectively, connect the device with the external controller and the external circuit, and the injection molding machine injects raw materials into the mold through the injection port 2. With the cooperation of the left mold 1 and the right mold 3, the production of each backpack buckle in the mold is completed. The servo motor 5 drives the bidirectional threaded rod 8 to rotate, and the bidirectional threaded rod 8 drives the two sets of bidirectional threaded sleeves 7 to move in opposite directions. The bidirectional threaded sleeve 7 drives the limit plate 4 to move, so that the two sets of limit plates 4 are away from each other, so that the limit plates 4 are away from the backpack buckle, so as to facilitate the output of the backpack buckle produced by the limit plate 4. The electric push rod 6 drives the rack 9 to move, and the rack 9 drives the first gear 10 to rotate. The first gear 10 drives the second gear 13 to rotate through the support shaft 11. Under the mutual engagement of the second gear 13 and the third gear 15, the second gear 13 drives the third gear 15 to rotate, and the third gear 15 drives the rotating threaded sleeve 16 to move in the active The movable sleeve 14 rotates internally, and the rotating threaded sleeve 16 drives the push rod 12 to move, and the push rod 12 drives the limiting sliding key 19 to slide inside the limiting groove 17, so that the push rod 12 extends from the inside of the right mold 3 to eject the backpack buckle produced on the side wall of the right mold 3, so as to further facilitate the output of the processed backpack buckle. When the backpack buckle is produced, the injection molding machine drives the left mold 1 and the right mold 3 to separate, and the left mold 1 drives the first limiting block 23 and the second limiting block 26 to move respectively. The first limiting block 23 slides on the surface of the first slide 21, and the second limiting block 26 slides on the surface of the second slide 24. Because the first slide 21 and the second slide 24 are designed as inclined surfaces, the first limiting block 23 and the second limiting block 26 will first bring out the special-shaped buckle 20 when moving, and then the first limiting block 23 and the second limiting block 26 move away from each other, and the special-shaped buckle 20 naturally falls off, thereby completing the use of the injection mold for backpack buckle production.

[0036] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An injection mold for producing backpack buckles, comprising a left mold (1) and a right mold (3), characterized in that: The left mold (1) is provided with a right mold (3) on the outside, an injection port (2) is installed on one side of the left mold (1), an electric push rod (6) is installed inside the right mold (3), a rack (9) is installed on the output end of the electric push rod (6), two groups of support shafts (11) are movably installed inside the right mold (3) on one side of the rack (9), the surfaces of the support shafts (11) are all fitted with a first gear (10), and the first gear (10) and the rack (9) are meshed with each other, the surfaces of the support shafts (11) on one side of the first gear (10) are all fitted with a second gear (13), and multiple groups of movable sleeves (14) are fixedly installed inside the right mold (3) on the side of the second gear (13), and the interiors of the movable sleeves (14) are all movable. A rotating threaded sleeve (16) is installed, a limiting sleeve (18) is installed on one side of the movable sleeve (14), and a limiting groove (17) is installed on the inner wall of the limiting sleeve (18). A third gear (15) is provided on the other side of the movable sleeve (14), and the third gear (15) is connected to the rotating threaded sleeve (16). A push rod (12) is slidably installed inside the third gear (15), and the push rod (12) passes through the movable sleeve (14), the rotating threaded sleeve (16), and the limiting sleeve (18), and the push rod (12) is threadedly connected to the rotating threaded sleeve (16). A limiting sliding key (19) is installed on the side wall of the push rod (12), and the limiting sliding key (19) is slidably connected to the limiting groove (17).

2. The injection mold for producing backpack buckles according to claim 1, characterized in that: A plurality of servo motors (5) are installed inside the left mold (1), and the output ends of the servo motors (5) are all installed with bidirectional threaded rods (8), and the bidirectional threaded rods (8) are movably connected to the left mold (1).

3. The injection mold for producing backpack buckles according to claim 2, characterized in that: The surfaces of the bidirectional threaded rods (8) are both sheathed with two sets of bidirectional threaded sleeves (7), and the bidirectional threaded sleeves (7) are threadedly connected to the bidirectional threaded rods (8), and the bidirectional threaded sleeves (7) are slidably connected to the left mold (1).

4. The injection mold for producing backpack buckles according to claim 3, characterized in that: A limiting plate (4) is slidably installed inside the left mold (1) on one side of the bidirectional threaded sleeve (7), and the limiting plate (4) is connected to the bidirectional threaded sleeve (7).

5. The injection mold for producing backpack buckles according to claim 1, characterized in that: A plurality of first sliding blocks (22) are installed on the side wall of the right mold (3), and a first sliding bar (21) is installed on the side wall of each of the first sliding blocks (22).

6. The injection mold for producing backpack buckles according to claim 5, characterized in that: A first limiting block (23) is provided on the outside of each of the first sliding blocks (22), and the first limiting block (23) is slidably connected to the first sliding bar (21).

7. The injection mold for producing backpack buckles according to claim 5, characterized in that: A second slider (25) is symmetrically mounted on the side wall of the right mold (3) on one side of the first slider (22), and a second slide bar (24) is mounted on the side wall of the second slider (25).

8. The injection mold for producing backpack buckles according to claim 7, characterized in that: The outside of each of the second sliding blocks (25) is provided with a second limiting block (26), and the second limiting block (26) is slidably connected to the second slide bar (24), and one side of each of the second limiting blocks (26) is provided with a special-shaped buckle (20).

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