Plastic bottle cap compression mold

Abstract

The utility model discloses a plastic bottle cap compression mold which comprises a lower female mold and an upper male mold, cooling water channels are arranged in the lower female mold and the upper male mold, a driving box is installed on one side of the upper male mold, an opening is formed in one end of the driving box, a collecting groove is inserted in the opening, a through hole is formed in the bottom of the collecting groove, and the through hole is communicated with the opening. The top and the bottom of the driving box are both provided with openings, the opening in the bottom of the driving box is connected with a dust collecting pipe, one end of the dust collecting pipe penetrates through the upper male die and is located on the outer side of the grinding material at the bottom of the upper male die, the bottom of the upper male die is rotationally connected with a large gear, and the bottom of the large gear is fixedly connected with the grinding material. A groove is formed in the upper male die, a motor is installed in the groove, one end of the motor is rotationally connected with a small gear, the small gear is located on the outer side of the large gear, and the small gear is connected with the large gear in an engaged mode. By means of the device, the formed top is flat and free of burrs, and the product forming quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic bottle cap production technology, specifically a plastic bottle cap compression mold. Background Technology

[0002] Plastic bottle caps are packaging components widely used in many industries such as food, beverage, pharmaceuticals, and cosmetics; their main functions are to protect the contents from contamination, prevent leakage, and, in some cases, provide the ability to open and reseal.

[0003] Plastic bottle caps are typically produced using two methods: injection molding and compression molding. Compression molding requires the use of a compression mold. However, existing compression molds often result in unevenness or even burrs on the top of the product after the material has cooled and been molded, reducing product quality and requiring secondary processing, which increases labor costs. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a plastic bottle cap compression mold to solve the problem of uneven top burrs that easily occur after the product is formed in the compression mold mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic bottle cap compression mold, comprising a lower concave mold and an upper convex mold, both of which are provided with cooling water channels. A large gear is rotatably connected to the bottom of the upper convex mold, and an abrasive is fixedly connected to the bottom of the large gear. A groove is provided inside the upper convex mold, and a motor is installed inside the groove. One end of the motor is rotatably connected to a small gear, which is located outside the large gear and meshes with the large gear.

[0006] Preferably, a drive box is installed on one side of the upper punch, and the top and bottom of the drive box are both opened. A dust collection pipe is connected to the bottom opening of the drive box, and one end of the dust collection pipe passes through the upper punch and is located outside the abrasive at the bottom of the upper punch.

[0007] Preferably, one end of the drive box has an opening, a collection groove is inserted inside the opening, a through hole is opened at the bottom of the collection groove, and a baffle is movably connected inside the through hole.

[0008] Preferably, a negative pressure fan is installed on the inner wall of the drive box, and a filter screen is fixedly connected to the top of both the collection tank and the negative pressure fan. The collection tank and the drive box are slidably connected.

[0009] Preferably, the pinions are distributed in a ring at equal intervals around the outer wall of the large gear.

[0010] Preferably, a second hydraulic cylinder is installed at the bottom of the lower die, and a first hydraulic cylinder is installed at the top of the upper die.

[0011] Preferably, both the lower die and the upper die are provided with cooling water channels, and an input pipe and an output pipe are respectively connected to both sides of the cooling water channels. Valves are provided on both the input pipe and the output pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device can produce a smooth and burr-free top after molding, thus improving the quality of product molding.

[0014] (2) This device sets an automatically rotating large gear at the bottom of the upper punch. The abrasive is fixed at the bottom of the large gear. During the rotation of the large gear, the abrasive can be driven to contact the top of the molded plastic bottle cap for grinding, thereby ensuring the flatness of the top of the bottle cap and avoiding the occurrence of burrs.

[0015] (3) This device connects a dust collection pipe to the outside of the abrasive at the bottom of the upper punch, and connects one end of the dust collection pipe to the drive box and the negative pressure fan, so that the debris generated during the grinding process can be collected in time, and the waste debris is prevented from adsorbing onto the molded plastic bottle cap. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a plastic bottle cap compression mold according to the present invention;

[0017] Figure 2 This utility model relates to a plastic bottle cap compression mold. Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This utility model relates to a plastic bottle cap compression mold. Figure 1 Enlarged view at point B in the middle;

[0019] Figure 4 This is a bottom view of the upper punch of a plastic bottle cap compression mold according to this utility model;

[0020] Figure 5 This is a top view of the connection between the large gear and the small gear in a plastic bottle cap compression mold according to this utility model.

[0021] In the diagram: 1. First hydraulic cylinder; 2. Upper punch; 3. Cooling water channel; 4. Lower die; 5. Valve; 6. Output pipe; 7. Second hydraulic cylinder; 8. Motor; 9. Input pipe; 10. Pinion; 11. Drive box; 12. Dust collection pipe; 13. Large gear; 14. Abrasive; 15. Filter screen; 16. Baffle; 17. Negative pressure fan; 18. Collection tank. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5This utility model provides a technical solution: a plastic bottle cap compression mold, including a lower concave mold 4 and an upper convex mold 2. Cooling water channels 3 are provided inside both the lower concave mold 4 and the upper convex mold 2. A drive box 11 is installed on one side of the upper convex mold 2. Openings are provided at the top and bottom of the drive box 11. A dust collection pipe 12 is connected to the bottom opening of the drive box 11. One end of the dust collection pipe 12 penetrates the upper convex mold 2 and is located outside the abrasive 14 at the bottom of the upper convex mold 2. This structure improves the efficiency and uniformity of waste material collection through the dust collection pipe 12. An opening is provided at one end of the drive box 11, and a collection groove 18 is inserted inside the opening. A through hole is provided at the bottom of the collection groove 18, allowing for movement within the through hole. A baffle 16 is connected; this structure uses the baffle 16 to intercept debris, preventing it from falling from the bottom of the collection tank 18. Simultaneously, when the negative pressure fan 17 is started, the baffle 16 can open under suction to ensure smooth collection of waste debris. A negative pressure fan 17 is installed on the inner wall of the drive box 11. Filter screens 15 are fixedly connected to the top of both the collection tank 18 and the negative pressure fan 17. The collection tank 18 and the drive box 11 form a sliding connection. This structure uses the negative pressure fan 17 to adsorb and collect waste debris through negative pressure. The filter screen 15 filters airborne debris, preventing it from adsorbing onto the negative pressure fan 17. The collection tank 18 can be pulled out for cleaning. A second hydraulic cylinder 7 is installed at the bottom of the lower die 4, and a first hydraulic cylinder 1 is installed at the top of the upper die 2. Both the lower die 4 and the upper die 2 can be raised and lowered to ensure their opening and closing. Cooling channels 3 are provided inside both the lower die 4 and the upper die 2. Input pipes 9 and output pipes 6 are connected to both sides of the cooling channels 3, and valves 5 are installed on both the input pipes 9 and 6. This structure ensures rapid cooling of the product during the molding process of the lower die 4 and the upper die 2. The input pipes 9 and 6 are connected to a cooling water tank and a storage water tank, respectively. A large gear 13 is rotatably connected to the bottom of the upper die 2. The upper punch 2 is fixedly connected to an abrasive 14. A groove is provided inside the upper punch 2, and a motor 8 is installed inside the groove. One end of the motor 8 is rotatably connected to a small gear 10. Multiple small gears 10 are distributed in a ring at equal intervals around the outer wall of the large gear 13. This structure can ensure the stability of the rotation of the large gear 13. The small gears 10 are located outside the large gear 13 and are meshed with the large gear 13. The motor 8 of this device can drive the small gears 10 to rotate automatically. During the rotation, the small gears 10 can push the large gear 13 and the abrasive 14 to rotate. A heat dissipation mesh is provided on the left side of the upper punch 2 of this device. The position of the heat dissipation mesh corresponds to the motor 8 to ensure the normal heat dissipation of the motor 8.

[0024] Working principle: When using this plastic bottle cap compression mold, the raw material is first added to the interior of the lower die 4 through the screw extruder. Then, the second hydraulic cylinder 7 pushes the lower die 4 upward, so that the lower die 4 and the upper punch 2 are closed, and the product is formed. After the product has cooled down, the second hydraulic cylinder 7 drives the lower die 4 to descend and reset. At this time, the formed product is on the upper punch 2, and the top of the formed product is in contact with the bottom of the abrasive 14. Then, the motor 8 drives the pinion 10 to rotate. During the rotation of the pinion 10, the pinion 10 pushes the large gear 13 to rotate. When the large gear 13 rotates, it drives the abrasive 14 to polish the top of the formed product, so that the top of the product is flat and smooth. Finally, the formed product is rotated to complete the demolding.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plastic bottle cap compression molding die comprising a lower concave mold (4) and an upper convex mold (2), both of which are provided with cooling water channels (3) inside, characterized in that: The bottom of the upper punch (2) is rotatably connected with a large gear (13), the bottom of the large gear (13) is fixedly connected with an abrasive (14), the upper punch (2) is internally provided with a recess, the recess is internally mounted with a motor (8), one end of the motor (8) is rotatably connected with a small gear (10), the small gear (10) is located outside the large gear (13), and the small gear (10) is in meshing connection with the large gear (13).

2. A plastic bottle cap compression molding mold according to claim 1, characterized in that: One side of the upper punch (2) is mounted with a drive box (11), the top and bottom of the drive box (11) are both provided with openings, the bottom opening of the drive box (11) is connected with a dust collection pipe (12), one end of the dust collection pipe (12) penetrates through the upper punch (2) and is located outside the abrasive (14) at the bottom of the upper punch (2).

3. A plastic bottle cap compression molding mold according to claim 2, characterized in that: One end of the drive box (11) is provided with an opening, the opening is internally inserted with a collecting groove (18), the bottom of the collecting groove (18) is provided with a through hole, and the through hole is movably connected with a baffle (16).

4. A plastic bottle cap compression molding mold according to claim 3, characterized in that: The inner wall of the drive box (11) is mounted with a negative pressure fan (17), the top of the collecting groove (18) and the negative pressure fan (17) is fixedly connected with a filter screen (15), and the collecting groove (18) and the drive box (11) are in sliding connection.

5. A plastic bottle cap compression molding mold according to claim 1, characterized in that: The small gear (10) is circularly and equidistantly distributed with a plurality of gears about the outer wall of the large gear (13).

6. A plastic bottle cap compression molding mold according to claim 1, characterized in that: The bottom of the lower die (4) is mounted with a second hydraulic cylinder (7), and the top of the upper punch (2) is mounted with a first hydraulic cylinder (1).

7. A plastic bottle cap compression molding mold according to claim 1, characterized in that: The lower die (4) and the upper punch (2) are both internally provided with cooling water channels (3), the two sides of the cooling water channels (3) are respectively connected with input pipes (9) and output pipes (6), and the input pipes (9) and the output pipes (6) are both provided with valves (5).

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