Rotary burr polishing device for injection molded part

Abstract

The utility model relates to the technical field of burr polishing, in particular to a rotary burr polishing device for an injection molding part. The utility model aims to provide a rotary burr polishing device for injection molded parts, which comprises an outer box, a dry ice cleaner is mounted in the outer box, a hydraulic cylinder is connected to the top of the outer box, a lifting block is connected to a movable rod of the hydraulic cylinder, and a rotating block driven by a gear motor is rotatably connected to the lifting block. An electric clamp is installed on the front portion of the rotating block. The electric clamp clamps an injection molding part, the gear motor is controlled to enable the rotating block and the electric clamp for clamping the injection molding part to rotate, meanwhile, the dry ice spraying opening sprays high-speed dry ice particles, the surface of the injection molding part can be impacted, the end face of the injection molding part can also be impacted, burrs are embrittled and stripped, dead corners generated when the burrs are removed are reduced, and the polishing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burr polishing, in particular to a rotary burr polishing device for injection molded parts. Background Art

[0002] Molten plastic material is injected into a mold to form an injection molded part. Burrs can easily form on the surface of the part due to various factors, such as excessive plastic fluidity or insufficient mold clamping force. Methods for polishing burrs on injection molded parts include mechanical methods, dry ice blasting, and high-pressure water jets. Dry ice blasting uses compressed air as both a power source and a carrier, causing dry ice particles to strike the surface of the molded part at high speed, rapidly freezing the burrs and causing them to become brittle and peel away.

[0003] A Chinese patent with publication number CN210650226U discloses a robotic dry ice deburring device. This patent places the workpiece on a supporting base plate, and then the robot's ice spray assembly removes the burrs. However, some burrs on the injection molded parts are located on their end faces, and this patent makes it difficult to automatically change the placement of the workpiece, resulting in difficulty in completely removing the burrs on the end faces of the workpiece. There are blind spots for burr removal, and there are certain limitations when using it. Utility Model Content

[0004] In order to solve the problem that burrs on the end face of a workpiece are difficult to be completely removed and there are dead corners for burr removal, the purpose of the utility model is to provide a rotary burr polishing device for injection molded parts.

[0005] The technical solution is: a rotary burr polishing device for injection molded parts, including an outer box, a dry ice cleaner installed inside the outer box, a hydraulic cylinder connected to the top of the outer box, a lifting block connected to the movable rod of the hydraulic cylinder, a rotating block driven by a reduction motor is rotatably connected to the lifting block, and an electric clamp is installed in front of the rotating block.

[0006] As a further preferred solution, the dry ice cleaner has a straight-line dry ice spray outlet. The upper end of the dry ice cleaner is rotatably connected to a guide frame. The top of the outer box is connected to an electric push rod. A ball is connected to the telescopic rod of the electric push rod. A limit groove is provided on the top of the guide frame, and the ball is located in the limit groove.

[0007] As a further preferred solution, the rotary burr polishing device for injection molded parts also includes a servo motor and a turntable. The lower part of the outer box is connected to the servo motor, and the turntable is connected to the output shaft of the servo motor.

[0008] As a further preferred solution, the rotary burr polishing device for injection molded parts further includes a material receiving frame, and the bottom of the outer box is connected to the material receiving frame.

[0009] As a further preferred solution, the bottom of the material receiving frame has an inclined guide portion.

[0010] As a further preferred solution, the rotary burr polishing device for injection molded parts also includes a baffle and a limit block. A discharge port is formed between the material receiving frame and the outer box. Two limit blocks are connected to the left part of the material receiving frame. A baffle for blocking the discharge port is provided on the right side of the two limit blocks, and the upper right part of the baffle is in contact with the left side of the outer box.

[0011] The utility model has the following advantages: 1. The electric clamp clamps the injection molded part, and the reduction motor is controlled to rotate the rotating block and the electric clamp clamping the injection molded part. At the same time, the dry ice nozzle ejects high-speed dry ice particles, which can not only hit the surface of the injection molded part, but also hit the end face of the injection molded part, making the burrs brittle and peeling off, reducing the dead angle of burr removal and improving the polishing effect.

[0012] 2. The injection molded part is placed on the turntable, the electric clamp is opened, and the rotating turntable drives the injection molded part to rotate. The electric clamp clamps the injection molded part again to change the position where the electric clamp clamps the injection molded part. The dry ice nozzle sprays out high-speed dry ice particles again, thereby completely removing burrs on the surface of the injection molded part.

[0013] 3. Control the electric push rod to drive the ball downward, and the ball pushes the guide frame to rotate downward. The guide frame guides the dry ice particles ejected from the dry ice nozzle, so that the dry ice particles are concentrated and sprayed toward the inside of the injection molded part, thereby removing the burrs inside the hollow injection molded part and making the burr removal more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the utility model after the outer box is hidden.

[0016] Figure 3 This is a structural diagram of the hydraulic cylinder, lifting block, rotating block, electric clamp and reduction motor of the utility model.

[0017] Figure 4 This is a structural diagram of the rotating block, electric clamp and reduction motor of the utility model.

[0018] Figure 5 This is a structural diagram of the dry ice cleaner, guide frame, electric push rod and ball of the utility model.

[0019] Figure 6 For this utility model Figure 5 Schematic diagram of the structure after the middle guide frame is rotated.

[0020] Figure 7 This is a structural diagram of the servo motor, turntable, material receiving frame, baffle and limit block of the utility model.

[0021] Among them: 1-outer box, 2-dry ice cleaner, 20-dry ice spray outlet, 21-guide frame, 22-electric push rod, 23-ball, 24-limiting groove, 3-hydraulic cylinder, 4-lifting block, 5-rotating block, 6-electric clamp, 60-injection molded part, 7-reduction motor, 8-servo motor, 9-turntable, 10-material receiving frame, 101-guide part, 11-baffle, 12-limiting block. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to specific embodiments. It should be noted that, unless otherwise specified or limited, terms such as "dispose," "install," "connect," and "connect" should be understood in a broad sense. For example, "connect" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; or it may refer to internal communication between two components. A person skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] Example 1: A rotary burr polishing device for injection molded parts, see Figures 1-6 , including an outer box 1, a dry ice cleaner 2, a hydraulic cylinder 3, a lifting block 4, a rotating block 5, an electric clamp 6 and a reduction motor 7. The dry ice cleaner 2 is installed on the right side of the outer box 1. The principle of the dry ice cleaner 2 is the existing technology. The dry ice cleaner 2 has a dry ice spray outlet 20 on the left side. The dry ice spray outlet 20 is in a straight line to increase the spray range of dry ice particles. The upper end of the dry ice cleaner 2 is rotatably connected to a guide frame 21. The top of the outer box 1 is bolted with an electric push rod 22. The telescopic rod of the electric push rod 22 A ball 23 is connected to the top, and a limiting groove 24 is provided on the top of the guide frame 21, and the ball 23 is located in the limiting groove 24; a hydraulic cylinder 3 is bolted to the top of the outer box 1, and a lifting block 4 is fixedly connected to the movable rod of the hydraulic cylinder 3, and a rotating block 5 is rotatably connected to the lifting block 4. A reduction motor 7 is bolted to the rear of the lifting block 4, and the output shaft of the reduction motor 7 is connected to the rotating block 5. An electric clamp 6 is installed at the front of the rotating block 5. The structure of the electric clamp 6 is the existing technology, and the electric clamp 6 includes two rotatable clamping parts.

[0024] See also Figure 1 、 Figure 2 and Figure 7 The rotary burr polishing device for injection molded parts also includes a servo motor 8 and a turntable 9. The lower part of the outer box 1 is connected to the servo motor 8, and the turntable 9 is fixedly connected to the output shaft of the servo motor 8.

[0025] refer to Figure 1The electric clamp 6 holds an injection molded part 60, controls the reduction motor 7 to drive the rotating block 5 to rotate, and drives the electric clamp 6 holding the injection molded part 60 to rotate. During the rotation, the dry ice cleaner 2 is controlled to make the dry ice ejection port 20 eject high-speed dry ice particles. The ejected dry ice particles can not only hit the surface of the injection molded part 60, but also hit the end face of the injection molded part 60, so that the burrs on the surface and end face of the injection molded part 60 are brittle and peeled off, reducing the dead angle of burr removal and improving the polishing effect.

[0026] Then the hydraulic cylinder 3 is controlled to drive the lifting block 4 to descend, driving the rotating block 5, the electric clamp 6 and the injection molded part 60 to descend, so that the injection molded part 60 is placed on the turntable, the clamping part of the electric clamp 6 is controlled to open, and then the servo motor 8 is controlled to drive the turntable 9 to rotate, driving the injection molded part 60 to rotate, and the electric clamp 6 clamps the injection molded part 60 again to replace the position where the electric clamp 6 clamps the injection molded part 60. The dry ice spray outlet 20 sprays out high-speed dry ice particles again, thereby being able to completely remove burrs on the surface of the injection molded part 60.

[0027] When the electric clamp 6 holding the injection molded part 60 rotates, the electric push rod 22 is controlled to drive the ball 23 to move downward. Since the ball 23 is located in the limiting groove 24, the ball 23 will push the guide frame 21 to rotate downward. Figure 6 The guide frame 21 guides the dry ice particles ejected from the dry ice ejection port 20 so that the dry ice particles are concentratedly sprayed toward the interior of the injection molded part 60, thereby removing the burrs inside the hollow injection molded part 60 and making the burr removal more comprehensive. The electric push rod 22 is controlled to drive the ball 23 to move upward, and the ball 23 pushes the guide frame 21 to rotate upward and reset, so that the dry ice ejection port 20 can eject a large range of dry ice particles again.

[0028] Example 2: Based on Example 1, please refer to Figure 1 、 Figure 2 and Figure 7 The rotary burr polishing device for injection molded parts also includes a material receiving frame 10, which is connected to the bottom of the outer box 1. The bottom of the material receiving frame 10 has a guide portion 101 inclined to the lower left; it also includes a baffle 11 and a limit block 12. A discharge port is formed between the left part of the material receiving frame 10 and the outer box 1. Two limit blocks 12 are connected to the left part of the material receiving frame 10. A baffle 11 for blocking the discharge port is provided on the right side of the two limit blocks 12, and the upper right part of the baffle 11 is in contact with the left side of the outer box 1.

[0029] The stripped burr waste falls into the receiving frame 10 for collection, and the guide part 101 guides the burr waste so that the burr waste is concentrated to the left. When the burrs of the injection molded part 60 are removed, the baffle 11 is manually pulled upward, and the baffle 11 no longer blocks the discharge port, and the burr waste can be recycled. The baffle 11 is released, and the baffle 11 slides downward to reset. The limit block 12 limits the baffle 11, and the baffle 11 blocks the discharge port again.

[0030] The technical principles of the embodiments of the present invention have been described above in conjunction with specific embodiments. These descriptions are intended solely to explain the principles of the embodiments of the present invention and should not be construed in any way as limiting the scope of protection of the embodiments of the present invention. Based on the explanations herein, those skilled in the art will be able to conceive of other specific implementations of the embodiments of the present invention without inventive effort, and these implementations will fall within the scope of protection of the embodiments of the present invention.

Claims

1. A rotary burr polishing device for injection molded parts, comprising an outer box (1), characterized in that: A dry ice cleaner (2) is installed inside the outer box (1), a hydraulic cylinder (3) is connected to the top of the outer box (1), a lifting block (4) is connected to the movable rod of the hydraulic cylinder (3), a rotating block (5) driven by a reduction motor (7) is rotatably connected to the lifting block (4), and an electric clamp (6) for clamping an injection molded part (60) is installed at the front of the rotating block (5).

2. A rotary burr polishing device for injection molded parts according to claim 1, characterized in that: The dry ice cleaner (2) has a straight-line dry ice ejection port (20), the upper end of the dry ice cleaner (2) is rotatably connected to a flow guide frame (21), the top of the inner portion of the outer box (1) is connected to an electric push rod (22), a ball (23) is connected to the telescopic rod of the electric push rod (22), a limiting groove (24) is provided on the top of the flow guide frame (21), and the ball (23) is located in the limiting groove (24).

3. A rotary burr polishing device for injection molded parts according to claim 2, characterized in that: The rotary burr polishing device for injection molded parts also includes a servo motor (8) and a turntable (9). The lower part of the outer box (1) is connected to the servo motor (8), and the turntable (9) is connected to the output shaft of the servo motor (8).

4. A rotary burr polishing device for injection molded parts according to claim 3, characterized in that: The rotary burr polishing device for injection molded parts further comprises a material receiving frame (10), and the bottom of the outer box (1) is connected to the material receiving frame (10).

5. A rotary burr polishing device for injection molded parts according to claim 4, characterized in that: The bottom of the material receiving frame (10) is provided with an inclined guide portion (101).

6. A rotary burr polishing device for injection molded parts according to claim 5, characterized in that: The rotary burr polishing device for injection molded parts further comprises a baffle (11) and a limiting block (12); a discharge port is formed between the material receiving frame (10) and the outer box (1); two limiting blocks (12) are connected to the left side of the material receiving frame (10); a baffle (11) for blocking the discharge port is provided on the right side of the two limiting blocks (12); and the upper right side of the baffle (11) contacts the left side of the outer box (1).

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