Automatic cleaning device for burrs of injection molded part

Abstract

The utility model relates to the field of post-processing equipment for injection molded parts, in particular to an automatic burr cleaning device for injection molded parts, which comprises a mounting shell, a mounting frame connected in the mounting shell, a base slidably connected to the mounting frame, an electric push rod mounted at one end of the base, a moving plate connected to a piston rod of the electric push rod, and a fixed plate connected to the other end of the base. The movable plate is rotationally connected with a second clamping plate, the fixed plate is rotationally connected with a first clamping plate, a connecting shaft is rotationally connected into the mounting shell, the left end and the right end of the connecting shaft are connected with driving wheels, the first clamping plate penetrates through the fixed plate and is connected with a driven wheel, and a moving assembly used for moving the base is arranged in the mounting shell. The motor and the connecting shaft drive the driving wheels at the left end and the right end to rotate, so that a clamped injection molding product rotates, the base transversely moves on the mounting frame through rotation of the bidirectional lead screw, double movement of the injection molding part is achieved, the dry ice gun can cover the whole surface of the injection molding part, and the purpose of completely cleaning burrs is achieved.

Description

Technical Field

[0001] This utility model relates to the field of post-processing equipment for injection molded parts, and in particular to an automatic burr cleaning device for injection molded parts. Background Technology

[0002] Injection molding is a widely used manufacturing process that involves injecting molten plastic material into a mold, which then cools and solidifies to form a part of the desired shape. Injection molded parts are widely used in the automotive, electronics, home appliance, and medical equipment industries, offering advantages such as high production efficiency, low cost, and the ability to mass-produce complex shapes. However, during the molding process, burrs often form at edges or seams due to mold wear, improper mold closing, or uneven material flow. These burrs not only affect the product's appearance but may also impact its assembly performance and lifespan, thus requiring subsequent cleaning.

[0003] Currently, deburring methods for injection molded parts mainly include mechanical grinding, manual finishing, chemical treatment, and dry ice deburring. Among these, dry ice deburring technology has gradually become the mainstream method due to its advantages such as being environmentally friendly, efficient, and producing no secondary pollution. Dry ice deburring utilizes high-speed jets of dry ice particles to impact the burr area, hardening and embrittled the burrs through low temperatures, thereby removing them. This method does not damage the workpiece surface and does not require the use of chemical solvents, meeting the environmental and efficiency requirements of modern manufacturing.

[0004] Existing dry ice deburring equipment typically requires operators to hold the injection molded part by hand or use clamping devices to hold the workpiece in place. However, hand-held operation is not only inefficient but also poses safety hazards; while clamping devices can hold the workpiece in place, the clamping parts can also block some areas when spraying dry ice, resulting in the dry ice not being sprayed evenly onto all surfaces of the workpiece. This problem of incomplete deburring is particularly prominent for injection molded parts with complex shapes. Utility Model Content

[0005] To overcome the shortcomings of obstruction and incomplete burr removal, this utility model provides an automatic burr cleaning device for injection molded parts, aiming to solve the above problems.

[0006] An automatic burr removal device for injection molded parts includes a mounting housing, on which a dry ice gun for spraying dry ice is mounted. A mounting frame is connected inside the mounting housing, and a base is slidably connected to the mounting frame. An electric push rod is mounted at one end of the base, and the piston rod of the electric push rod is connected to a movable plate. A fixed plate is connected to the other end of the base. A second clamping plate is rotatably connected to the movable plate facing the fixed plate, and a first clamping plate is rotatably connected to the fixed plate facing the movable plate. A motor is mounted on the right side of the mounting housing, and a connecting shaft is rotatably connected inside the mounting housing. The right end of the connecting shaft is fixedly connected to the output shaft of the motor, and both ends of the connecting shaft are connected to driving wheels. The first clamping plate passes through the fixed plate and is connected to a driven wheel, which meshes with the driving wheel. A moving component for moving the base is provided inside the mounting housing.

[0007] To further explain, the moving component includes a bidirectional lead screw, an extension gear is connected to the right side of the driven wheel on the right side, the extension gear meshes with the driving wheel, the bidirectional lead screw is rotatably connected to the mounting housing, and the bidirectional lead screw is threadedly connected to the base, and the connecting shaft and the left end of the bidirectional lead screw are jointly provided with a grooved wheel mechanism.

[0008] To further explain, foam pads are connected to the adjacent sides of the first and second clamping plates.

[0009] To further explain, a triangular plate is connected to the top of the base.

[0010] To further explain, a splash guard is connected to the top of the mounting housing, and the dry ice gun passes through the splash guard.

[0011] To further explain, a protective housing is connected to the left end of the mounting housing, and the protective housing covers the Geneva mechanism.

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

[0013] The motor and connecting shaft drive the drive wheels at both ends to rotate, thereby rotating the clamped injection molded product. The rotation of the bidirectional lead screw causes the base to move laterally on the mounting frame, achieving dual movement of the injection molded part. As a result, the dry ice gun can cover the entire surface of the injection molded part, achieving the purpose of completely removing burrs. Attached Figure Description

[0014] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model from a second perspective.

[0016] Figure 3This is a partial structural cross-sectional view of the fixed plate and driven wheel of this utility model.

[0017] Figure 4 This is a schematic diagram of the specific structure of the drive wheel and connecting shaft of this utility model.

[0018] Figure 5 This is a schematic diagram of the installation structure of the grooved wheel mechanism and the bidirectional lead screw of this utility model.

[0019] The markings in the attached diagram are as follows: 1: mounting housing, 2: dry ice gun, 3: mounting bracket, 4: base, 5: electric push rod, 6: moving plate, 7: fixed plate, 8: motor, 9: drive wheel, 91: connecting shaft, 10: driven wheel, 11: first clamping plate, 12: second clamping plate, 13: Geneva mechanism, 14: double-acting lead screw, 15: extension gear, 16: foam pad, 17: triangular plate, 18: splash guard, 19: protective housing. Detailed Implementation

[0020] The present invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0021] Example: An automatic burr removal device for injection molded parts, such as... Figures 1-5 As shown, the assembly includes a mounting housing 1, dry ice guns 2, a mounting bracket 3, a base 4, an electric push rod 5, a moving plate 6, a fixed plate 7, a motor 8, a drive wheel 9, a connecting shaft 91, a driven wheel 10, a first clamping plate 11, a second clamping plate 12, and a moving assembly. Two dry ice guns 2 for spraying dry ice are mounted on the mounting housing 1. The mounting bracket 3 is fixedly connected inside the mounting housing 1. Two bases 4 are slidably connected to the mounting bracket 3. An electric push rod 5 is mounted on the adjacent end of each of the two bases 4. The piston rod of the electric push rod 5 is connected to the moving plate 6. The separable ends of the two bases 4 are connected to... There is a fixed plate 7, and a movable plate 6 is rotatably connected to a second clamping plate 12 on the side facing the fixed plate 7. A fixed plate 7 is rotatably connected to a first clamping plate 11 on the side facing the movable plate 6. A motor 8 is installed on the right side of the mounting housing 1. A connecting shaft 91 is rotatably connected inside the mounting housing 1. The right end of the connecting shaft 91 is fixedly connected to the output shaft of the motor 8. A drive wheel 9 is connected to the left and right ends of the connecting shaft 91 respectively. The first clamping plate 11 passes through the fixed plate 7 and is connected to a driven wheel 10. The driven wheel 10 meshes with the drive wheel 9. A moving component for moving the base 4 is provided inside the mounting housing 1.

[0022] like Figure 5As shown, the moving assembly includes a Geneva mechanism 13, a bidirectional lead screw 14, and an extension gear 15. The right side of the driven wheel 10 is connected to the extension gear 15, which meshes with the driving wheel 9. The bidirectional lead screw 14 is rotatably connected to the mounting housing 1 and threadedly connected to the base 4. The connecting shaft 91 and the left end of the bidirectional lead screw 14 are both provided with the Geneva mechanism 13. The driving wheel 9 at the left end converts the continuous rotational motion of the motor into intermittent rotational motion through the Geneva mechanism 13, thereby driving the bidirectional lead screw 14 to rotate intermittently, realizing the lateral movement of the base 4. The rotation of the bidirectional lead screw 14 causes the base 4 to move laterally on the mounting frame 3, expanding the spray range of the dry ice gun 2 and ensuring more comprehensive burr removal. When the base 4 moves, the extension gear 15 on the right side meshes with the driving wheel 9 to ensure the transmission stability between the driven wheel 10 and the driving wheel 9, avoiding transmission failure caused by the movement of the base 4.

[0023] like Figures 1-5 As shown, it also includes a foam pad 16. The foam pad 16 is connected to the adjacent side of the first clamping plate 11 and the second clamping plate 12. The softness of the foam pad 16 avoids damage to the product surface, while providing sufficient clamping force to ensure that the product remains stable during rotation and movement.

[0024] like Figure 2 As shown, it also includes a triangular plate 17, which is connected to the top of the base 4 and tilts forward and backward. The burrs and debris that fall off fall onto the triangular plate 17 on the top of the base 4. Because the triangular plate 17 is tilted forward and backward, the burrs and debris slide down the inclined surface and eventually enter the collection box at the bottom of the mounting housing, which is convenient for centralized cleaning and avoids the accumulation of debris from affecting the operation of the equipment.

[0025] like Figure 2 As shown, it also includes a splash guard 18. The top of the mounting housing 1 is connected to the splash guard 18, and the dry ice gun 2 passes through the splash guard 18. The splash guard 18 effectively blocks the debris and splashes generated during dry ice spraying, preventing them from flying outside the equipment, keeping the working environment clean, and protecting the safety of the operators.

[0026] like Figure 1 As shown, it also includes a protective housing 19. The protective housing 19 is connected to the left end of the mounting housing 1. The protective housing 19 covers the Geneva mechanism 13, providing it with a closed working environment to prevent external dust, debris or other foreign objects from entering, ensuring the normal operation of the Geneva mechanism 13. The design of the protective housing 19 also facilitates daily maintenance and inspection, and extends the service life of the equipment.

[0027] After the worker places the injection-molded product on the base 4, the electric push rod 5 is activated, pushing the moving plate 6 towards the fixed plate 7. The second clamping plate 12 moves with the moving plate 6 and cooperates with the first clamping plate 11, clamping the injection-molded product from both sides through the foam pad 16. The softness of the foam pad 16 avoids damage to the product surface, while providing sufficient clamping force to ensure the product remains stable during rotation and movement. Then, the motor 8 is activated, driving the drive wheels 9 at both ends to rotate through the connecting shaft 91. The drive wheels 9 mesh with the driven wheels 10, driving the first clamping plate 11 to rotate, thereby clamping the product. The injection-molded product rotates, and at the same time, the driving wheel 9 on the left end converts continuous rotation into intermittent rotation through the grooved wheel mechanism 13, driving the bidirectional lead screw 14 to rotate intermittently. The rotation of the bidirectional lead screw 14 causes the base 4 to move laterally on the mounting bracket 3, expanding the spray range of the dry ice gun 2 and ensuring that the dry ice can cover the entire surface of the injection-molded part, especially the edges and seams of complex shapes. This effectively solves the problem of "incomplete removal" caused by the obstruction of clamping parts in traditional methods. The extension gear 15 on the right side keeps the driving wheel 9 and the driven wheel 10 in a meshing state when the base 4 moves, ensuring transmission stability.

[0028] During dry ice blasting, the burrs and debris that fall off fall onto the triangular plate 17 at the top of the base 4 and slide down the inclined plane into the collection box at the bottom of the mounting housing 1 for easy centralized cleaning. The splash guard 18 is installed on the top of the mounting housing 1 to block the debris and splashes generated during dry ice blasting, keeping the working environment clean and protecting the safety of the operators. The protective housing 19 covers the grooved wheel mechanism 13 to prevent the entry of foreign objects, ensuring its normal operation and extending the equipment's lifespan. Through the coordinated work of all components, the device achieves efficient and comprehensive cleaning of the burrs on injection molded parts, significantly improving the cleaning effect and production efficiency.

[0029] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation in order to cover all variations and equivalent structures and functions.

Claims

1. An automatic burr removal device for injection molded parts, characterized in that: The device includes a mounting housing (1) on which a dry ice gun (2) for spraying dry ice is mounted. A mounting bracket (3) is connected inside the mounting housing (1). A base (4) is slidably connected to the mounting bracket (3). An electric push rod (5) is mounted at one end of the base (4). A movable plate (6) is connected to the piston rod of the electric push rod (5). A fixed plate (7) is connected to the other end of the base (4). A second clamping plate (12) is rotatably connected to the movable plate (6) facing the fixed plate (7). The fixed plate (7) faces the movable plate (6). A first clamping plate (11) is rotatably connected to one side of the mounting housing (1). A motor (8) is installed on the right side of the mounting housing (1). A connecting shaft (91) is rotatably connected inside the mounting housing (1). The right end of the connecting shaft (91) is fixedly connected to the output shaft of the motor (8). Both ends of the connecting shaft (91) are connected to driving wheels (9). The first clamping plate (11) passes through the fixed plate (7) and is connected to a driven wheel (10). The driven wheel (10) meshes with the driving wheel (9). A moving component for moving the base (4) is provided inside the mounting housing (1).

2. The automatic burr removal device for injection molded parts according to claim 1, characterized in that: The moving component includes a bidirectional lead screw (14), and an extension gear (15) is connected to the right side of the driven wheel (10) on the right side. The extension gear (15) meshes with the driving wheel (9). The bidirectional lead screw (14) is rotatably connected to the mounting housing (1), and the bidirectional lead screw (14) is threadedly connected to the base (4). The connecting shaft (91) and the left end of the bidirectional lead screw (14) are jointly provided with a grooved wheel mechanism (13).

3. The automatic burr removal device for injection molded parts according to claim 1, characterized in that: Foam pads (16) are connected to the adjacent side of the first clamping plate (11) and the second clamping plate (12).

4. An automatic burr removal device for injection molded parts according to claim 1, characterized in that: A triangular plate (17) is connected to the top of the base (4).

5. An automatic burr cleaning device for injection molded parts according to claim 1, characterized in that: The top of the mounting housing (1) is connected to a splash guard (18), through which the dry ice gun (2) passes.

6. An automatic burr removal device for injection molded parts according to claim 2, characterized in that: The left end of the mounting housing (1) is connected to a protective housing (19), which covers the Geneva mechanism (13).

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