A deburring device for plastic mold production

Abstract

This utility model discloses a deburring device for plastic mold production, including a drive mechanism and several grinding heads. The drive mechanism includes a handle, in which a motor and a reducer are fixedly installed. The output shaft of the motor is connected to the reducer for transmission. In use, the motor is started to drive the grinding heads to rotate. After the front end of the grinding head tube is inserted into the hole to be ground, the tube is pushed further into the hole, so that the blade edge contacts the hole opening and grinds the burrs at the hole opening. Continuing to push the tube, the blade will rotate around the pin and compress the spring mechanism, so that the blade edge retracts into the opening groove, allowing the blade to enter the hole. When the blade extends out from the other end of the hole, it will pop out of the opening groove under the action of the spring mechanism. At this time, the tube is moved in the opposite direction, and the blade can be used to grind the other end of the hole. After grinding is completed, the tube is moved further to pull the blade out of the hole. The operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a deburring device for plastic mold production. Background Technology

[0002] Plastic molds are a type of combined mold used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. Through the coordinated changes of the punch, die, and auxiliary molding system, plastic molds can produce a series of plastic parts of different shapes and sizes.

[0003] During the production process of plastic molds, burrs on the surface need to be polished to ensure the molding quality of plastic products. A patent with publication number CN219521529U discloses a precision mold processing deburring device. After the precision mold is clamped and fixed by a fixed clamp, the rotating wheel is gradually moved forward by the force of the screw rod connected to the internal thread of the rotating wheel. This gradually extends the position of the extension rod forward, ensuring that the precision mold can better fit the side of the polishing roller. The device provides uniform and stable polishing treatment to the side of the precision mold, greatly increasing its practicality.

[0004] While the above-mentioned solution can effectively grind and deburr the outer surface of the mold, it cannot remove burrs from the openings of the inner holes and cross holes of the mold. Therefore, we propose a deburring device for plastic mold production. Utility Model Content

[0005] The purpose of this invention is to provide a deburring device for plastic mold production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A deburring device for plastic mold production includes a drive mechanism and several grinding heads. The drive mechanism includes a handle, in which a motor and a reducer are fixedly installed. The output shaft of the motor is connected to the reducer. The output shaft of the reducer passes through the handle and is fixedly connected to a connecting seat. A set screw is threaded through a threaded hole on the connecting seat. The grinding head includes a regular hexagonal prism. The end face of the connecting seat has a hexagonal hole adapted to the regular hexagonal prism. One end of the regular hexagonal prism is fixedly connected to a tube. An opening groove is opened on the outer wall of the tube. A blade is rotatably connected to the tube body at the corresponding position of the opening groove via a pin. The cutting edge of the blade extends from the opening groove to the outside of the tube body, and the part of the blade outside the tube body is triangular. A spring-back mechanism for the blade is provided inside the tube body.

[0008] As a further embodiment of this utility model: the spring-rebound mechanism includes a spring and a push rod located inside the tube body, the push rod being located between the spring and the blade, and a screw plug being connected to the regular hexagonal prism through a threaded hole, with one end of the spring away from the push rod abutting against one end of the screw plug.

[0009] As a further embodiment of this utility model: the end of the push rod facing the blade is spherical, and the end of the blade facing the push rod is inclined, and an arc-shaped groove adapted to the spherical end of the push rod is provided on the inclined surface.

[0010] As a further embodiment of this utility model, a positioning groove is provided on the outer wall of the regular hexagonal prism at the corresponding position of the set screw.

[0011] As a further improvement of this utility model: a switch is installed through the outer wall of the grip, and a heat dissipation hole is opened at the corresponding position of the outer wall of the grip and the motor.

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

[0013] In use, the motor is started to drive the grinding head to rotate. The front end of the grinding head tube is inserted into the hole to be ground. The tube is then pushed further into the hole, causing the blade to contact the opening and grind the burrs. Continuing to push the tube causes the blade to rotate around the pin and compress the spring mechanism, retracting the blade into the opening groove. Once the blade extends from the other end of the hole, it will spring out of the opening groove under the action of the spring mechanism. At this point, the tube is moved in the opposite direction, allowing the blade to grind the other end of the hole. After grinding, the tube is moved again to remove the blade from the hole. The operation is simple and convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a deburring device used in plastic mold production.

[0015] Figure 2 for Figure 1 A partial sectional view.

[0016] Figure 3 This is a schematic diagram of the grinding head structure in a deburring device for plastic mold production.

[0017] The components include: 1. Handle; 2. Motor; 3. Reducer; 4. Connecting seat; 5. Set screw; 6. Switch; 7. Heat dissipation hole; 8. Regular hexagonal prism; 9. Positioning groove; 10. Plug; 11. Tube body; 12. Opening groove; 13. Push rod; 14. Blade; 15. Cutting edge; 16. Pin; 17. Arc groove; and 18. Spring. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3 In this embodiment of the present invention, a deburring device for plastic mold production includes a drive mechanism and several grinding heads. The drive mechanism includes a handle 1, in which a motor 2 and a reducer 3 are fixedly installed. The output shaft of the motor 2 is connected to the reducer 3. The output shaft of the reducer 3 passes through the handle 1 and is fixedly connected to a connecting seat 4. A set screw 5 is threaded through a threaded hole on the connecting seat 4. The grinding head includes a regular hexagonal prism 8. The end face of the connecting seat 4 has a hexagonal hole adapted to the regular hexagonal prism 8. One end of the regular hexagonal prism 8 is fixedly connected to a tube body 11. An opening groove 12 is opened on the outer wall of the tube body 11. A blade 14 is rotatably connected to the corresponding part of the opening groove 12 inside the tube body 11 through a pin 16. The cutting edge 15 of the blade 14 extends from the opening groove 12 to the outside of the tube body 11, and the part of the blade 14 outside the tube body 11 is triangular. A spring-back mechanism for the blade 14 is provided inside the tube body 11.

[0020] By adopting the above-mentioned solution, when using this utility model, after holding the handle 1 and starting the motor 2, the grinding head can be driven to rotate through the reducer 3 and the connecting seat 4. After the front end of the tube 11 of the grinding head is inserted into the hole to be ground, the tube 11 is pushed into the hole, so that the cutting edge 15 of the blade 14 contacts the hole opening and grinds the burrs at the hole opening. If the tube 11 is pushed further, the blade 14 will rotate around the pin 16 and compress the spring mechanism, so that the cutting edge 15 is retracted into the opening groove 12, allowing the blade 14 to enter the hole. When the blade 14 extends out of the opening at the other end of the hole, it will be ejected from the opening groove 12 under the action of the spring mechanism. At this time, the tube 11 is moved in the opposite direction, so that the blade 14 can be used to grind the opening at the other end of the hole. After grinding is completed, the tube 11 is moved further, so that the blade 14 can be pulled out of the hole. The operation is simple and convenient.

[0021] Specific combination Figure 3 In one embodiment of the present invention, the rebound mechanism includes a spring 18 and a push rod 13 located inside the tube body 11. The push rod 13 is located between the spring 18 and the blade 14. A screw plug 10 is connected to the regular hexagonal prism 8 through a threaded hole. One end of the spring 18 away from the push rod 13 abuts against one end of the screw plug 10.

[0022] By setting up a screw plug 10, a spring 18, and a push rod 13, the push rod 13 will always be in contact with one end of the blade 14 under the action of the spring 18. When the blade 14 enters the hole, it will rotate on the pin 16 to push the push rod 13 and compress the spring 18. When the blade 14 passes out of the hole, the spring 18 will push the push rod 13 to reset so that the cutting edge 15 of the blade 14 extends out of the opening slot 12.

[0023] Specific combination Figure 3 Based on the previous embodiment, the end of the push rod 13 facing the blade 14 is spherical, and the end of the blade 14 facing the push rod 13 is inclined. An arc groove 17 adapted to the spherical end of the push rod 13 is provided on the inclined surface. When the spherical end of the push rod 13 is located in the arc groove 17, the cutting edge 15 of the blade 14 is located outside the tube body 11.

[0024] During the rotation of the blade 14, the spherical end of the push rod 13 and the inclined surface at the end of the blade 14 provide good guidance, allowing the push rod 13 to slide within the tube 11.

[0025] Specific combination Figure 2 In one embodiment of this utility model, a positioning groove 9 is provided on the outer wall of the regular hexagonal prism 8 at the corresponding position of the set screw 5.

[0026] After inserting the regular hexagonal prism 8 into the hexagonal hole on the connector 4, tighten the set screw 5. The end of the set screw 5 can abut against the positioning groove 9 so that the regular hexagonal prism 8 cannot be pulled out from the connector 4.

[0027] Specific combination Figure 1 In one embodiment of the present invention, a switch 6 is installed through the outer wall of the grip 1, and a heat dissipation hole 7 is provided at the corresponding position of the outer wall of the grip 1 and the motor 2.

[0028] Furthermore, while the structures of the various grinding heads in this invention are identical, the diameter and length of the tube body 11 of each grinding head are different. At the same time, the dimensions of the push rod 13, spring 18, blade 15, etc. inside the tube body 11 are also different, so as to be suitable for holes with different inner diameters and depths.

[0029] 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 deburring device for plastic mold production, characterized in that: The device includes a drive mechanism and several grinding heads. The drive mechanism includes a handle (1), in which a motor (2) and a reducer (3) are fixedly installed. The output shaft of the motor (2) is connected to the reducer (3) via a transmission. The output shaft of the reducer (3) extends out of the handle (1) and is fixedly connected to a connecting seat (4). A set screw (5) is threaded through a threaded hole on the connecting seat (4). The grinding head includes a regular hexagonal prism (8). The end face of the connecting seat (4) has six openings that are compatible with the regular hexagonal prism (8). A hexagonal hole is provided. One end of the regular hexagonal prism (8) is fixedly connected to a tube body (11). An opening groove (12) is provided on the outer wall of the tube body (11). A blade (14) is rotatably connected to the corresponding part of the opening groove (12) inside the tube body (11) via a pin (16). The cutting edge (15) of the blade (14) extends from the opening groove (12) to the outside of the tube body (11), and the part of the blade (14) outside the tube body (11) is triangular. A spring-back mechanism for the blade (14) is provided inside the tube body (11).

2. The deburring device for plastic mold production according to claim 1, characterized in that: The rebound mechanism includes a spring (18) and a push rod (13) located inside the tube (11). The push rod (13) is located between the spring (18) and the blade (14). A screw plug (10) is connected to the regular hexagonal prism (8) through a threaded hole. The end of the spring (18) away from the push rod (13) abuts against the end of the screw plug (10).

3. The deburring device for plastic mold production according to claim 2, characterized in that: The end of the push rod (13) facing the blade (14) is spherical, and the end of the blade (14) facing the push rod (13) is inclined, and an arc groove (17) adapted to the spherical end of the push rod (13) is provided on the inclined surface.

4. The deburring device for plastic mold production according to claim 1, characterized in that: The outer wall of the regular hexagonal prism (8) is provided with a positioning groove (9) at the corresponding position of the set screw (5).

5. The deburring device for plastic mold production according to claim 1, characterized in that: A switch (6) is installed through the outer wall of the grip (1), and a heat dissipation hole (7) is opened at the corresponding position of the outer wall of the grip (1) and the motor (2).

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