An automated singeing machine for processing plastic products

Abstract

This utility model relates to an automated singeing machine for processing plastic products. It includes: a frame; a rotary table assembly, including a main motor, a support platform, several positioning suction cups, and a sample sheet; a singeing assembly, including a slide rail, a sliding seat, a mounting column, a spray gun holder, and a spray gun, wherein a guide wheel is mounted on one end of the sliding seat, and the guide wheel rolls in contact with the side of the sample sheet; a spring connects the sliding seat and the frame; and a handling robot, including a servo slide, a servo motor, an L-shaped outward-extending arm, a suction cup frame, and handling suction cups. This utility model can realize automated loading and unloading, and automated singeing process, significantly improving production efficiency, reducing labor costs, and steadily increasing the yield rate.

Description

Technical Field

[0001] This utility model relates to a plastic product manufacturing equipment, and more particularly to an automated singeing machine for processing plastic products. Background Technology

[0002] A portable toolbox is a container used to store tools. Portable toolboxes are generally divided into metal and plastic types. Plastic toolboxes come in two types: solid and hollow. Hollow toolboxes offer better shock resistance and are suitable for storing some power tools. These hollow toolboxes are typically produced using blow molding. After blow molding, the parting line of the semi-finished hollow toolbox will have significant burrs, which need to be removed through a stamping process. However, the stamping process can also create burrs at the cut edges, so manufacturers usually add a deburring process. Currently, the principle for deburring these plastic products is that workers use a handheld, lit blowtorch to briefly heat the burr area, melting it. After cooling, the burrs will naturally become smooth. However, the current method of manual singeing is inefficient and costly, and the yield rate of manual singeing is difficult to guarantee. Summary of the Invention

[0003] This invention provides an automated singeing machine for processing plastic products, which solves the problem that the existing technology of manually singeing plastic products results in low production efficiency and high labor costs.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: an automated singeing machine for processing plastic products, comprising: a frame;

[0005] The rotary table assembly includes a main motor vertically fixed on the frame, a support platform horizontally fixed on the output shaft of the main motor, several positioning suction cups vertically upward on the support platform, and a lofting piece that rotates synchronously with the support platform. The outer dimensions and outline of the lofting piece are basically consistent with the outer outline of the plastic part.

[0006] The singeing assembly includes a slide rail horizontally fixed to the frame, a slide seat slidably mounted on the slide rail, a mounting column vertically fixed to the slide seat, a spray gun seat movably mounted on the mounting column, and a spray gun mounted on the spray gun seat. The axial direction of the slide rail is directly opposite the axis of the main motor. A guide wheel is mounted on one end of the slide seat near the sample piece, and the guide wheel rolls in contact with the side of the sample piece. A spring is provided at the other end of the slide seat, and a spring positioning seat that abuts against the spring is provided on the frame.

[0007] The handling robot includes a servo slide vertically fixed relative to the frame, a servo motor vertically mounted on the servo slide, an L-shaped outward arm mounted on the output shaft of the servo motor, a suction cup frame located at the outer end of the L-shaped outward arm, and a handling suction cup vertically mounted downward on the bottom surface of the suction cup frame. The handling suction cup on the suction cup frame can be used to adsorb plastic parts. The servo slide on the handling robot can control the L-shaped outward arm to move up and down, and the servo motor can control the L-shaped outward arm to rotate downward, thereby realizing the switching of the suction cup frame between the loading position, the singeing position, and the unloading position.

[0008] The working principle of this invention is as follows: A robotic arm automatically transports the plastic parts from the loading station to the support platform. The positioning suction cups on the support platform can adsorb and position the plastic parts. The placement angle and position of the plastic parts must perfectly match the sample sheet below. Then, the spray gun is ignited, and the main motor starts rotating synchronously. During rotation, the guide wheels on the sliding seat, pushed by springs, remain in contact with the sample sheet. This allows the sliding seat to self-adaptively slide back and forth, maintaining a relatively stable distance between the spray gun and the plastic parts. After the main motor completes one revolution, the spray gun is turned off, and the plastic parts have undergone singeing treatment all around. The robotic arm can then automatically transport the plastic parts to the unloading station. To ensure consistent singeing quality, the spray gun's heat, heating distance, and heating time must be kept as consistent as possible. The spray gun's heat is relatively easy to control, and the uniform rotation of the main motor also roughly ensures consistent heating time. As for the heating distance, this invention uses guide wheels rolling along the contour of the sample sheet to maintain a fixed distance between the spray gun and the heated area. Therefore, theoretically, the contour of the sample sheet matches the rough edge contour of the plastic parts. However, due to excessive curvature changes in some contours, the guide rollers may not pass smoothly. Therefore, adjustments need to be made to these contours to ensure smooth rolling between the guide rollers and the lofting piece. Furthermore, since the adjustment range is small, its impact on deburring effectiveness is negligible.

[0009] Furthermore, the spray gun holder is equipped with a rotary cylinder with a rotation angle of 90 degrees, and the spray gun is horizontally fixed on the rotating seat of the rotary cylinder. By setting up the rotary cylinder, the orientation of the spray gun can be adjusted. When singeing is required, the spray gun is oriented directly towards the plastic part; conversely, when singeing needs to be stopped, the spray gun's orientation needs to be deflected to avoid baking the plastic part. This allows the spray gun to remain in a burning state, eliminating the need for frequent ignition. It also prevents damage to the plastic part caused by failed flameout.

[0010] Furthermore, a turntable bearing is horizontally fixed on the frame, coaxial with the shaft of the main motor. A receiving plate is fixedly installed on the turntable bearing, synchronously connected to the output shaft of the main motor to ensure synchronous rotation. The lofting plate is mounted on the receiving plate and is composed of at least two fan-shaped split pieces. The lofting plate can be disassembled into multiple split pieces for easy disassembly. This invention allows for the singeing treatment of different plastic products by replacing different lofting plates, demonstrating good applicability.

[0011] Therefore, this utility model has the following characteristics compared with the prior art: 1. This utility model can realize automated loading and unloading, automated deburring process, which can significantly improve production efficiency, reduce labor costs, and steadily improve the yield rate. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Appendix Figure 2 This is a structural schematic diagram of the singeing assembly;

[0014] Appendix Figure 3 This is a top view of the handling robot.

[0015] Appendix Figure 4 This is an installation diagram for placing sample pieces. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Example 1: See Figure 1 , Figure 2 and Figure 3 An automated singeing machine for processing plastic products, used to remove burrs from plastic parts 1 of a toolbox, includes: a frame 100;

[0019] The rotary table assembly 200 includes a main motor 210 vertically fixed on the frame, a support platform 220 horizontally fixed on the output shaft of the main motor, a number of positioning suction cups 230 vertically arranged on the support platform, and a lofting piece 240 that rotates synchronously with the support platform. The outer dimensions and outline of the lofting piece are basically consistent with the outer outline of the plastic part.

[0020] The singeing assembly 300 includes a slide rail 310 horizontally fixed on the frame, a slide seat 320 slidably mounted on the slide rail, a mounting column 330 vertically fixed on the slide seat, a spray gun seat 340 movably mounted on the mounting column, and a spray gun 350 mounted on the spray gun seat. The axis of the slide rail is directly opposite the axis of the main motor. A guide wheel 360 is mounted on one end of the slide seat near the sample piece. The guide wheel rolls and fits against the side of the sample piece. A spring 370 is provided at the other end of the slide seat. A spring positioning seat 380 that abuts against the spring is provided on the frame.

[0021] The handling robot 400 includes a servo slide 410 vertically fixed relative to the frame, a servo motor 420 vertically mounted on the servo slide, an L-shaped outward arm 430 mounted on the output shaft of the servo motor, a suction cup frame 440 located at the outer end of the L-shaped outward arm, and a handling suction cup 450 vertically mounted downward on the bottom surface of the suction cup frame. The handling suction cup on the suction cup frame can be used to adsorb plastic parts. The servo slide on the handling robot can control the L-shaped outward arm to move up and down, and the servo motor can control the L-shaped outward arm to rotate downward, thereby realizing the switching of the suction cup frame between the loading position 10, the singeing position 20, and the unloading position 30.

[0022] The working principle of this embodiment is as follows: A robotic arm automatically transports the plastic parts from the loading station to the support platform. The positioning suction cups on the support platform can adsorb and position the plastic parts. The placement angle and position of the plastic parts must perfectly match the sample sheet below. Then, the spray gun is ignited, and the main motor starts rotating synchronously. During rotation, the guide wheels on the sliding seat, pushed by springs, remain in contact with the sample sheet. This allows the sliding seat to adaptively slide back and forth, maintaining a relatively stable distance between the spray gun and the plastic parts. After the main motor completes one revolution, the spray gun is turned off, and the plastic parts have undergone singeing treatment all around. The robotic arm can then automatically transport the plastic parts to the unloading station. To ensure consistent singeing quality, the spray gun's heat, heating distance, and heating time must be kept as consistent as possible. The spray gun's heat is relatively easy to control, and the uniform rotation of the main motor also roughly ensures consistent heating time. As for the heating distance, this embodiment uses guide wheels rolling along the contour of the sample sheet to maintain a fixed distance between the spray gun and the heated area. Therefore, theoretically, the contour of the sample sheet matches the burr contour of the plastic parts. However, due to excessive curvature changes in some contours, the guide rollers may not pass smoothly. Therefore, adjustments need to be made to these contours to ensure smooth rolling between the guide rollers and the lofting piece. Furthermore, since the adjustment range is small, its impact on deburring effectiveness is negligible.

[0023] See Figure 2 The spray gun holder is also equipped with a rotary cylinder 390, which rotates 90 degrees. The spray gun is horizontally fixed on the rotating base of the rotary cylinder. By setting up the rotary cylinder, the direction of the spray gun can be adjusted. When singeing is needed, the spray gun is pointed directly at the plastic part; conversely, when singeing needs to be stopped, the spray gun needs to be deflected to avoid baking the plastic part. This allows the spray gun to remain in a burning state, eliminating the need for frequent ignition. It also prevents damage to the plastic part caused by failed flameout.

[0024] See Figure 4 A turntable bearing 250 is horizontally fixed on the frame, coaxial with the shaft of the main motor. A receiving plate 260 is fixedly installed on the turntable bearing, with an assembly hole 261 and four insertion slots 262 at its center. A bushing 270 is fixedly fitted onto the output shaft of the main motor, with four insertion plates 271 protruding from the outer wall of the bushing. The insertion plates engage with the insertion slots to ensure that the receiving plate rotates synchronously with the output shaft of the main motor. A pattern-setting plate is installed on the receiving plate, and the pattern-setting plate is composed of at least two fan-shaped split pieces 241 joined together. The pattern-setting plate can be disassembled into multiple split pieces for easy disassembly. In this embodiment, different plastic products can be singeed by replacing different pattern-setting plates, demonstrating good applicability.

[0025] See Figure 1The singeing assembly has two sets, distributed on both sides of the main motor's shaft. This way, the main motor only needs to rotate 180° during the singeing process, and it needs to be rotated in the opposite direction to reset after singeing, which effectively avoids the problem of pipeline entanglement.

[0026] See Figure 2 The mounting post is a T-shaped profile, and the spray gun holder is provided with a retaining sleeve 341 that hugs the outside of the mounting post. A screw 342 that passes through the inside and outside of the retaining sleeve and abuts against the mounting post is screwed onto the retaining sleeve.

[0027] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. An automatic singeing machine for processing plastic products, characterized in that, include: frame; The rotary table assembly includes a main motor vertically fixed on the frame, a support platform horizontally fixed on the output shaft of the main motor, a plurality of positioning suction cups vertically upward disposed on the support platform, and a lofting plate that rotates synchronously with the support platform. The singeing assembly includes a slide rail horizontally fixed to the frame, a slide seat slidably mounted on the slide rail, a mounting column vertically fixed to the slide seat, a spray gun seat movably mounted on the mounting column, and a spray gun mounted on the spray gun seat. The axial direction of the slide rail is directly opposite the axis of the main motor. A guide wheel is mounted on one end of the slide seat near the sample piece, and the guide wheel rolls in contact with the side of the sample piece. A spring is provided at the other end of the slide seat, and a spring positioning seat that abuts against the spring is provided on the frame. The handling robot includes a servo slide vertically fixed relative to the frame, a servo motor vertically mounted on the servo slide, an L-shaped outward arm mounted on the output shaft of the servo motor, a suction cup frame located at the outer end of the L-shaped outward arm, and a handling suction cup vertically mounted downward on the bottom surface of the suction cup frame.

2. The automatic singeing machine for processing of plastic articles as claimed in claim 1 wherein: The spray gun holder is also equipped with a rotary cylinder with a rotation angle of 90 degrees, and the spray gun is horizontally fixed on the rotary seat of the rotary cylinder.

3. The automatic singeing machine for processing of plastic articles as claimed in claim 1 wherein: A turntable bearing is horizontally fixed on the frame. The turntable bearing is coaxial with the shaft of the main motor. A receiving plate is fixedly installed on the turntable bearing. The receiving plate is synchronously connected to the output shaft of the main motor. The lofting plate is installed on the receiving plate. The lofting plate is composed of at least two fan-shaped split pieces spliced ​​together.

4. The automatic singeing machine for processing of plastic articles as claimed in claim 1 wherein: Two sets of the singeing assembly are provided, and they are distributed on both sides of the shaft of the main motor.

5. The automatic singeing machine for processing of plastic articles as claimed in claim 1 wherein: The mounting post is a T-shaped profile, and the spray gun holder is provided with a retaining sleeve that hugs the outside of the mounting post. A screw that passes through the inside and outside of the retaining sleeve and abuts against the mounting post is screwed onto the retaining sleeve.

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