Plastic bolt manufacturing mold for electric appliance

Abstract

The invention discloses a plastic bolt manufacturing mold for electric appliances in the technical field of plastic bolts, which comprises a fixing frame, a first side mold is fixedly connected to the inner wall of the left side of the fixing frame, a screw rod is rotatably connected to the fixing frame, and a second side mold which can be in butt joint with the first side mold is spirally connected to the screw rod. By the adoption of the feeding separation assembly, when the mold is opened during injection molding, the feeding separation assembly ejects plastic out of the interior of the mold through the sliding frame sliding outwards in the mold, and then the cutter plate at the front end of the pushing plate for pushing the sliding block in the mold to slide upwards makes contact with waste on the mold and cuts off the waste; according to the bolt waste separating device, the formed bolt is separated from the waste, the bolt and the waste are separated and collected through the rotating plate which continuously rotates along with sliding of the mold, the waste of the bolt is separated while the mold is opened after injection molding is completed, and the machining efficiency of the plastic bolt can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic bolts, in particular to a mold for manufacturing plastic bolts for electrical appliances. Background Art

[0002] Plastic bolts are bolts made of nylon, PE and other plastic materials through hot melt injection molding. Compared with ordinary metal bolts, plastic bolts have excellent performance in insulation and corrosion resistance, and are more suitable than metal bolts in certain specific industries.

[0003] The processing of metal bolts is generally machine cutting, while plastic bolts are hot melt injection molding. The hot melt injection molding method can batch mold multiple bolts inside the processing mold. After molding, there will be excess parts to connect multiple bolts so that all the bolts can be taken out of the mold. Then the excess parts are cut off from the bolts. This part is the waste during the processing of plastic bolts. Usually, the waste is cut off from the bolts in a semi-automatic way, that is, the bolts are manually placed on the cutting equipment to cut off the waste from the bolts. There is a lack of automated equipment to improve the processing efficiency of plastic bolts.

[0004] Based on this, the present invention designs a mold for manufacturing plastic bolts for electrical appliances to solve the problem of automatic separation of waste materials and bolts during the above-mentioned plastic bolt processing process. Summary of the invention

[0005] The object of the present invention is to provide a mold for manufacturing plastic bolts for electrical appliances to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mold for making plastic bolts for electrical appliances, comprising a fixed frame, a first side mold fixedly connected to the left inner wall of the fixed frame, a screw rod rotatably connected to the fixed frame, a second side mold capable of docking with the first side mold being spirally connected to the screw rod, injection cavities are respectively provided inside the first side mold and the second side mold, an injection cylinder is fixedly connected to the top of the fixed frame, a feed pipe for docking with an extrusion device is fixedly connected to the top of the injection cylinder, a feeding separation component is commonly provided on the first side mold and the second side mold, the feeding separation component is used to take out the plastic bolts formed inside the injection cavity and separate the waste material on the plastic bolts from them.

[0007] As a further solution of the present invention, the feeding separation assembly includes a sliding frame, which is slidably arranged inside the first side mold, and the rear end of the sliding frame is fixedly connected to a first threaded rod with a left end passing through the first side mold, and the left end of the first threaded rod is spirally sleeved with a first threaded sleeve, and the left end of the screw rod slides through the first side mold, and the first threaded sleeve and the first side mold are jointly rotatably connected with a first transmission belt, the front and rear sides of the sliding frame are respectively rotatably connected to docking plates, and the docking plates are provided with torsion springs for their reset, and the bottom end of the sliding frame is slidably connected to a plurality of sliding plates distributed at equal distances, and the left end of the sliding plate is fixedly connected to a first spring for its reset.

[0008] As a further solution of the present invention, a sliding block is slidably connected to the inside of the second side mold, a fixed plate is fixedly connected to the inside of the second side mold, a second spring is fixedly connected to the right end of the sliding block, and the top end of the sliding block contacts the fixed plate for resetting the sliding block, a sliding sleeve is rotatably connected to the right end of the second side mold, and the sliding sleeve is slidably sleeved on the outside of the screw rod, a pushing plate is slidably connected to the inside of the second side mold, a second threaded rod is fixedly connected to the right end of the push plate with the right end of the second threaded rod having an outer wall of the right end passing through the second side mold, a second threaded sleeve is spirally sleeved on the outside of the second threaded rod, the sliding sleeve and the second threaded sleeve are rotatably connected to a second transmission belt, and a cutting plate is fixedly connected to the left end of the second transmission belt.

[0009] As a further solution of the present invention, the front and rear end outer walls of the push plate are respectively fixedly connected with convex plates, and the two docking plates are respectively fixedly connected with limiting plates for docking with the convex plates.

[0010] As a further solution of the present invention, the bottom end of the first side mold is fixedly connected to a fixed shaft, and a threaded groove is provided on the fixed shaft. The bottom end of the second side mold is rotatably connected to a rotating plate, and the rotating plate is slidably sleeved on the outside of the fixed shaft and docked with the threaded groove through an internal protrusion. The inner bottom of the fixed frame is fixedly connected to a conveying frame.

[0011] As a further solution of the present invention, a driving assembly is fixedly connected to the side wall of the fixing frame, and an output end of the driving assembly passes through the fixing frame and is fixedly connected to the screw rod.

[0012] As a further solution of the present invention, the outer wall of the sliding block can be completely fitted with the inner wall of the second side mold, and the outer wall of the sliding frame can be completely fitted with the inner wall of the first side mold.

[0013] As a further solution of the present invention, the left end surface of the pushing plate is a smooth inclined surface, and the bottom end surface of the sliding block can fit with the left end surface of the pushing plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention adopts a feeding separation component. When the mold is opened during injection molding, the feeding separation component pushes the plastic out of the mold through a sliding frame that slides outward from the inside of the mold, and then a cutting plate at the front end of a pushing plate that pushes the sliding block inside the mold to slide upward contacts and cuts off the waste on the mold, so that the formed bolts are separated from the waste, and the waste can be recycled and reused. The bolts and the waste are separated and collected by a rotating plate that rotates continuously as the mold slides. When the mold is opened after the injection molding is completed, the waste separation process of the bolts is completed, which can effectively improve the processing efficiency of plastic bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the back structure of the first side mold;

[0018] Figure 3 It is a schematic diagram of the front structure of the first side mold;

[0019] Figure 4 It is a schematic diagram of the sliding frame structure;

[0020] Figure 5 It is a schematic diagram of the bottom structure of the sliding frame;

[0021] Figure 6 It is a schematic diagram of the back structure of the second side mold;

[0022] Figure 7 It is a schematic diagram of the front structure of the second side mold;

[0023] Figure 8 It is a schematic diagram of the structure of the sliding block, the pushing plate and the second threaded rod.

[0024] 1. The mold of the embodiment of the present invention is as follows: 1. a fixed frame; 2. an injection molding cylinder; 3. a first side mold; 4. a second side mold; 5. a screw rod; 6. a conveying frame; 7. a driving assembly; 8. a first transmission belt; 9. a first threaded rod; 10. a first threaded sleeve; 11. an injection molding cavity; 12. a limit plate; 13. a docking plate; 14. a sliding frame; 15. a sliding plate; 16. a first spring; 17. a sliding sleeve; 18. a second transmission belt; 19. a second threaded sleeve; 20. a second threaded rod; 21. a fixed shaft; 22. a rotating plate; 25. a sliding block; 26. a fixed plate; 27. a second spring; 28. a pushing plate; 29. ​​a convex plate; 30. a cutting plate. DETAILED DESCRIPTION

[0025] See also Figure 1-Figure 8The present invention provides a technical solution: a plastic bolt manufacturing mold for electrical appliances, comprising a fixing frame 1, a first side mold 3 is fixedly connected to the left inner wall of the fixing frame 1, a screw rod 5 is rotatably connected to the fixing frame 1, a second side mold 4 capable of docking with the first side mold 3 is spirally connected to the screw rod 5, an injection cavity 11 is respectively opened inside the first side mold 3 and the second side mold 4, an injection cylinder 2 is fixedly connected to the top of the fixing frame 1, a feed pipe for docking with an extrusion device is fixedly connected to the top of the injection cylinder 2, a feeding separation component is commonly arranged on the first side mold 3 and the second side mold 4, the feeding separation component is used to take out the plastic bolt formed inside the injection cavity 11 and separate the waste material on the plastic bolt, a driving component 7 is fixedly connected to the side wall of the fixing frame 1, and the output end of the driving component 7 passes through the fixing frame 1 and is fixedly connected to the screw rod 5;

[0026] See also Figure 1 When processing the plastic bolt, the second side mold 4 is driven to slide on the screw rod 5 by the driving component 7 to drive the screw rod 5 to rotate, so that the first side mold 3 and the second side mold 4 are closely fitted, and the plastic particles are hot-melted by the extruder and docked with the feed pipe at the top of the injection molding cylinder 2, and the hot-melt plastic is sent into the injection molding cylinder 2, and then a sufficient amount of raw materials are sent into the first side mold 3 and the second side mold 4 through the discharge port at the bottom of the injection molding cylinder 2. After the hot-melt plastic is fully cooled, the screw rod 5 is rotated in the opposite direction to drive the second side mold 4 to slide and disengage from the docking with the first side mold 3. During the sliding process of the second side mold 4, the feeding and separation component removes the plastic formed in the first side mold 3 from the inside of the mold, and cuts off the excess waste on the bolt and separates it from the bolt, and separates the bolt from the waste and collects it. The produced bolts continue to be processed, and the waste is collected, ground and continued to be sent to the extruder for recycling.

[0027] As a further solution of the present invention, the feeding separation assembly includes a sliding frame 14, which is slidably arranged inside the first side mold 3, and the rear end of the sliding frame 14 is fixedly connected to a first threaded rod 9 whose left end passes through the first side mold 3, and the left end of the first threaded rod 9 is spirally sleeved with a first threaded sleeve 10, and the left end of the screw rod 5 slides through the first side mold 3, and the first threaded sleeve 10 and the first side mold 3 are rotatably connected to the first transmission belt 8, and the front and rear sides of the sliding frame 14 are respectively rotatably connected to the docking plate 13, and the docking plate 13 is provided with a torsion spring for its reset, and the bottom end of the sliding frame 14 is slidably connected to a plurality of sliding plates 15 distributed at equal distances, and the left end of the sliding plate 15 is fixedly connected to a first spring 16 for its reset;

[0028] A sliding block 25 is slidably connected inside the second side mold 4, a fixed plate 26 is fixedly connected inside the second side mold 4, a second spring 27 is fixedly connected to the right end of the sliding block 25, and the top end contacts the fixed plate 26 for resetting the sliding block 25, a sliding sleeve 17 is rotatably connected to the right end of the second side mold 4, the sliding sleeve 17 is slidably sleeved on the outside of the screw rod 5, a push plate 28 is slidably connected inside the second side mold 4, a second threaded rod 20 is fixedly connected to the right end of the push plate 28, a second threaded sleeve 19 is spirally sleeved on the outside of the second threaded rod 20, the sliding sleeve 17 and the second threaded sleeve 19 are rotatably connected to the second transmission belt 18 together, and a cutting plate 30 is fixedly connected to the left end of the second transmission belt 18;

[0029] See also Figure 6-8 After the plastic bolt is injection molded, the screw rod 5 rotates to drive the second side mold 4 to slide away from the first side mold 3. At the same time, the screw rod 5 rotates to drive the sliding sleeve 17 to rotate together. The sliding sleeve 17 drives the second threaded sleeve 19 to rotate through the second transmission belt 18. The second threaded sleeve 19 drives the second threaded rod 20 to slide. The second threaded rod 20 pushes the push plate 28 to slide, so that the push plate 28 pushes the sliding block 25 to compress the second spring 27 to slide upward, so that the push plate 28 drives the cutting plate 30 to extend from the left end of the second side mold 4.

[0030] See also Figure 2-5 At the same time, the screw rod 5 drives the first transmission belt 8 to rotate, the first transmission belt 8 drives the first threaded sleeve 10 to rotate, and the first threaded sleeve 10 drives the first threaded rod 9 to slide, so that the first threaded rod 9 pushes the sliding frame 14 to extend from the inside of the first side mold 3 to the right, and the sliding frame 14 drives the bolts inside the injection cavity 11 to be demoulded, and due to the extrusion force of the two-side docking plates 13 under the action of the torsion spring, the bolts can be embedded in the sliding frame 14 as a whole, so that the bolts will not fall off the sliding frame 14 after demoulding;

[0031] As the push plate 28 and the sliding frame 14 slide towards each other, the cutting plate 30 at the left end of the push plate 28 will gradually contact the bolt waste on the sliding frame 14, and as the sliding cutting plate 30 gradually squeezes the waste, the sliding plate 15 compresses the first spring 16 to slide until the cutting plate 30 completely cuts off the waste on the top of the bolt. At this time, the second side mold 4 also slides to the farthest distance. At this time, the bolt will fall directly due to the disconnection from the waste, thereby completing the separation of the waste and the bolt. The first side mold 3 and the second side mold 4 can be reset by rotating the screw rod 5 in the opposite direction, and the sliding frame 14 inside the first side mold 3 can be reset, and the push plate 28 and the sliding block 25 inside the second side mold 4 can also be reset, and then the first side mold 3 and the second side mold 4 can be re-connected for injection molding.

[0032] As a further solution of the present invention, the front and rear end outer walls of the push plate 28 are respectively fixedly connected with convex plates 29, and the two docking plates 13 are respectively fixedly connected with limit plates 12 for docking with the convex plates 29;

[0033] See also Figure 4 , 8 When the push plate 28 gradually docks with the sliding frame 14, the convex plates 29 on both sides of the push plate 28 will contact the limit plates 12 on the docking plate 13 and gradually push the docking plate 13 to flip over as a whole, so that after the cutting plate 30 contacts the waste on the bolt, the cutting plate 30 can fix the waste and at the same time make the docking plate 13 break away from the clamping of the bolt. In this way, after the cutting plate 30 cuts off the waste, the bolt can automatically unload, and the cut waste will also fall on the cutting plate 30. As the cutting plate 30 retreats, the waste can also fall from the gap between the sliding frame 14 and the cutting plate 30, avoiding the cut waste from being stuck inside the sliding frame 14.

[0034] As a further solution of the present invention, a fixed shaft 21 is fixedly connected to the bottom end of the first side mold 3, and a thread groove is provided on the fixed shaft 21. A rotating plate 22 is rotatably connected to the bottom end of the second side mold 4. The rotating plate 22 is slidably sleeved on the outside of the fixed shaft 21 and docked with the thread groove through an internal protrusion. A conveying frame 6 is fixedly connected to the inner bottom of the fixed frame 1.

[0035] See also Figure 1 , Figure 6 When the second side mold 4 slides with the screw rod 5, the rotating plate 22 slides along the fixed shaft 21 at the same time, and the rotating plate 22 rotates around the fixed shaft 21 along the threaded groove on the fixed shaft 21 during the sliding process. When the second side mold 4 slides to a position away from the first side mold 3, the rotating plate 22 rotates around the fixed shaft 21 to a vertical state, so that the bolts separated from the waste automatically fall to the top of the conveying rack 6, and the bolts are transported by the conveying rack 6, and the rotating plate 22 will not affect the falling of the bolts. When the second side mold 4 gradually approaches the first side mold 3, the rotating plate 22 will gradually rotate to a horizontal state on the fixed shaft 21. In this process, the waste separated from the sliding rack 14 will fall to the top of the rotating plate 22, and as the rotating plate 22 rotates, the waste will slide to a collection position different from the bolts, thereby realizing the separation and collection of waste and bolts.

[0036] As a further solution of the present invention, the outer wall of the sliding block 25 can be completely fitted with the inner wall of the second side mold 4, and the outer wall of the sliding frame 14 can be completely fitted with the inner wall of the first side mold 3;

[0037] When they are completely fitted together, the gap inside the first side mold 3 and the second side mold 4 will not affect the injection molding during the injection molding process, thereby ensuring the accuracy of the injection molding of the plastic bolt.

[0038] As a further solution of the present invention, the left end surface of the push plate 28 is a smooth inclined surface, and the bottom end surface of the sliding block 25 can fit with the left end surface of the push plate 28;

[0039] When the push plate 28 with an inclined end surface slides horizontally, it can push the sliding block 25 to slide upward by means of friction, so that the sliding block 25 will not affect the sliding of the push plate 28, so that the cutting plate 30 can slide horizontally to a position in contact with the bolt waste.

[0040] Working principle: When processing the plastic bolt, the second side mold 4 is driven to slide on the screw rod 5 by driving the screw rod 5 to rotate through the driving component 7, so that the first side mold 3 and the second side mold 4 are closely fitted, and the plastic particles are hot-melted by the extruder and connected with the feed pipe at the top of the injection molding cylinder 2, and the hot-melt plastic is fed into the injection molding cylinder 2, and then a sufficient amount of raw materials are fed into the first side mold 3 and the second side mold 4 through the discharge port at the bottom of the injection molding cylinder 2;

[0041] After the plastic bolt is injection molded, the screw rod 5 rotates to drive the second side mold 4 to slide away from the first side mold 3. At the same time, the screw rod 5 rotates to drive the sliding sleeve 17 to rotate together. The sliding sleeve 17 drives the second threaded sleeve 19 to rotate through the second transmission belt 18. The second threaded sleeve 19 drives the second threaded rod 20 to slide. The second threaded rod 20 pushes the push plate 28 to slide, so that the push plate 28 pushes the sliding block 25 to compress the second spring 27 to slide upward, so that the push plate 28 drives the cutting plate 30 to extend from the left end of the second side mold 4.

[0042] At the same time, the screw rod 5 drives the first transmission belt 8 to rotate, the first transmission belt 8 drives the first threaded sleeve 10 to rotate, and the first threaded sleeve 10 drives the first threaded rod 9 to slide, so that the first threaded rod 9 pushes the sliding frame 14 to extend from the inside of the first side mold 3 to the right, and the sliding frame 14 drives the bolts inside the injection cavity 11 to be demoulded, and due to the extrusion force of the docking plates 13 on both sides under the action of the torsion spring, the bolts can be embedded in the sliding frame 14 as a whole, so that the bolts will not fall off the sliding frame 14 after demoulding;

[0043] As the push plate 28 and the sliding frame 14 slide towards each other, the cutting plate 30 at the left end of the push plate 28 will gradually contact the bolt waste on the sliding frame 14, and as the sliding cutting plate 30 gradually squeezes the waste, the sliding plate 15 compresses the first spring 16 and slides until the cutting plate 30 completely cuts off the waste on the top of the bolt. At this time, the second side mold 4 also slides to the farthest distance. At this time, the bolt will fall directly due to being separated from the connection with the waste, thereby completing the separation of the waste and the bolt. The first side mold 3 and the second side mold 4 can be reset by rotating the screw rod 5 in the opposite direction, and the sliding frame 14 inside the first side mold 3 is reset, and the push plate 28 and the sliding block 25 inside the second side mold 4 are also reset. When the push plate 28 gradually docks with the sliding frame 14, the convex plates 29 on both sides of the push plate 28 will contact the limit plates 12 on the docking plate 13, and gradually push the docking plate 13 to flip as a whole, so that after the cutting plate 30 contacts the waste on the bolt, the cutting plate 30 can fix the waste. When the second side mold 4 slides to a position away from the first side mold 3, the rotating plate 22 rotates around the fixed shaft 21 to a vertical state, so that the bolts separated from the waste automatically fall to the top of the conveying rack 6, and the bolts are transported by the conveying rack 6, and the rotating plate 22 will not affect the falling of the bolts. When the second side mold 4 gradually approaches the first side mold 3, the rotating plate 22 will gradually rotate on the fixed shaft 21 to a horizontal state. In this process, the waste separated from the sliding rack 14 will fall to the top of the rotating plate 22, and as the rotating plate 22 rotates, the waste will slide to a collection position different from the bolts, so as to realize the separation and collection of waste and bolts.

Claims

1. A mold for making plastic bolts for electrical appliances, comprising a fixing frame (1), a first side mold (3) fixedly connected to the left inner wall of the fixing frame (1), a screw rod (5) rotatably connected to the fixing frame (1), a second side mold (4) capable of docking with the first side mold (3) being spirally connected to the screw rod (5), an injection cavity (11) being respectively provided inside the first side mold (3) and the second side mold (4), an injection cylinder (2) fixedly connected to the top of the fixing frame (1), a feed pipe for docking with an extrusion device fixedly connected to the top of the injection cylinder (2), characterized in that: The first side mold (3) and the second side mold (4) are jointly provided with a feeding and separation assembly, which is used to take out the plastic bolts formed inside the injection cavity (11) and separate the waste material on the plastic bolts.

2. The mold for making plastic bolts for electrical appliances according to claim 1, characterized in that: The feeding separation component comprises a sliding frame (14), the sliding frame (14) is slidably arranged inside the first side mold (3), the rear end of the sliding frame (14) is fixedly connected to a first threaded rod (9) whose left end passes through the first side mold (3), the left end of the first threaded rod (9) is spirally sleeved with a first threaded sleeve (10), the left end of the screw rod (5) slides through the first side mold (3), the first threaded sleeve (10) and the first side mold (3) are rotatably connected to a first transmission belt (8), the front and rear sides of the sliding frame (14) are respectively rotatably connected to a docking plate (13), the docking plate (13) is provided with a torsion spring for its reset, the bottom end of the sliding frame (14) is slidably connected to a plurality of sliding plates (15) distributed at equal distances, and the left end of the sliding plate (15) is fixedly connected to a first spring (16) for its reset.

3. The mold for making plastic bolts for electrical appliances according to claim 2, characterized in that: A sliding block (25) is slidably connected inside the second side mold (4), a fixed plate (26) is fixedly connected inside the second side mold (4), a second spring (27) is fixedly connected at the right end of the sliding block (25), the top end of which contacts the fixed plate (26) for resetting the sliding block (25), a sliding sleeve (17) is rotatably connected at the right end of the second side mold (4), the sliding sleeve (17) is slidably sleeved on the outside of the screw rod (5), a push plate (28) is slidably connected inside the second side mold (4), the right end of the push plate (28) is fixedly connected to a second threaded rod (20) whose right end outer wall passes through the second side mold (4), the second threaded rod (20) is spirally sleeved on the outside with a second threaded sleeve (19), the sliding sleeve (17) and the second threaded sleeve (19) are rotatably connected to a second transmission belt (18), and the left end of the second transmission belt (18) is fixedly connected to a cutting plate (30).

4. The mold for making plastic bolts for electrical appliances according to claim 3, characterized in that: The front and rear end outer walls of the push plate (28) are respectively fixedly connected with convex plates (29), and the two docking plates (13) are respectively fixedly connected with limit plates (12) for docking with the convex plates (29).

5. The mold for manufacturing plastic bolts for electrical appliances according to claim 1, characterized in that: The bottom end of the first side mold (3) is fixedly connected to a fixed shaft (21), and a thread groove is formed on the fixed shaft (21). The bottom end of the second side mold (4) is rotatably connected to a rotating plate (22), and the rotating plate (22) is slidably sleeved on the outside of the fixed shaft (21) and docked with the thread groove through an internal protrusion. The inner bottom of the fixed frame (1) is fixedly connected to a conveying frame (6).

6. The mold for manufacturing plastic bolts for electrical appliances according to claim 1, characterized in that: A driving assembly (7) is fixedly connected to the side wall of the fixing frame (1), and an output end of the driving assembly (7) passes through the fixing frame (1) and is fixedly connected to the screw rod (5).

7. The mold for manufacturing plastic bolts for electrical appliances according to claim 3, characterized in that: The outer wall of the sliding block (25) can be completely fitted with the inner wall of the second side mold (4), and the outer wall of the sliding frame (14) can be completely fitted with the inner wall of the first side mold (3).

8. The mold for manufacturing plastic bolts for electrical appliances according to claim 4, characterized in that: The left end surface of the pushing plate (28) is a smooth inclined surface, and the bottom end surface of the sliding block (25) can fit with the left end surface of the pushing plate (28).

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