A plastic product quality detection auxiliary device

Abstract

The utility model discloses a kind of plastic product quality detection auxiliary equipment, including support base frame, rotating workbench, arc detection tool and control system, the rotating workbench is installed on support base frame, rotating workbench upper surface evenly is equipped with flexible rotary pneumatic clamp, the flexible rotary pneumatic clamp includes small rotating motor, the small rotating motor is fixed in rotating workbench lower end, and its top is provided with rotating matrix, the rotating matrix upper end is fixed with airtight cavity, the airtight cavity is hollow inside, and its lateral wall sliding installation has pneumatic clamp jaw, the airtight cavity end is interconnected with small air pump. The utility model, by flexible rotary pneumatic clamp, realize flexible clamping to plastic product, avoid its deformation, and it can drive plastic product to rotate 360 degrees, and only through single industrial camera can the entire lateral wall be detected for defect.

Description

Technical Field

[0001] This utility model relates to the field of plastic product quality testing technology, and in particular to an auxiliary device for plastic product quality testing. Background Technology

[0002] Plastic product quality inspection involves examining and evaluating plastic products to ensure that their quality, performance, and safety meet relevant standards and requirements. Generally, it requires inspecting the surface of plastic products for defects and checking for deviations in their dimensions.

[0003] Existing auxiliary equipment for quality testing of plastic products generally suffers from the following problems:

[0004] 1. Single-station inspection requires multiple clamping operations, which is inefficient. Furthermore, when visually inspecting surface defects, multiple stations are needed to inspect the entire sidewall, making the process cumbersome.

[0005] 2. Traditional fixtures are prone to causing deformation of thin-walled parts, which affects the accuracy of dimensional measurement. Therefore, further improvements are needed. Utility Model Content

[0006] The purpose of this invention is to provide an auxiliary device for quality inspection of plastic products, which has the advantages of flexible clamping, multi-station inspection, and no need for multiple clamping, so as to solve the problems of low efficiency and easy deformation of thin-walled parts mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for quality inspection of plastic products, comprising a support frame, a rotating worktable, an arc-shaped inspection fixture, and a control system. The rotating worktable is mounted on the support frame and includes a rotation drive assembly. The rotation drive assembly is located at the lower end of the rotating worktable. An annular mounting groove is provided on the upper surface of the rotating worktable. Flexible rotating pneumatic clamps are uniformly installed in the annular mounting groove. The flexible rotating pneumatic clamps include a small rotating motor. The small rotating motor is fixed at the lower end of the rotating worktable, and a rotating base is provided on its top. An airtight cavity is fixed at the upper end of the rotating base. The airtight cavity is hollow inside, and pneumatic grippers are slidably installed on its sidewalls. A small air pump is connected to the end of the airtight cavity.

[0008] The arc-shaped inspection fixture is set on the side of the rotary table, and its upper surface is arranged along the arc with a visual inspection station, a dimensional inspection station and an alarm indicator. The visual inspection station includes a cantilever bracket, and a ring light source and an industrial camera are set on the top of the cantilever bracket. The dimensional inspection station includes a lifting adjustment frame, and a laser displacement sensor is set on the lifting adjustment frame.

[0009] The control system integrates a PLC and an industrial computer, which are respectively connected to the rotary drive assembly, sensors at each workstation, and actuators.

[0010] Preferably, the rotary drive assembly includes a reversing gearbox, a drive motor is disposed on the side of the reversing gearbox, and the drive motor is electrically connected to an angle encoder.

[0011] Preferably, the surface of the pneumatic gripper is coated with polyurethane material, and a pressure sensor is provided on its surface, the pressure sensor being connected to the control system signal.

[0012] Preferably, a sealing gasket is provided between the airtight cavity and the pneumatic gripper.

[0013] Preferably, the laser displacement sensor is tilted at a 15-degree angle toward the workpiece detection area.

[0014] Preferably, there are two industrial cameras, which are respectively mounted on the front and top of the cantilever bracket, and are used to inspect the sides and top of the plastic parts.

[0015] Compared with the prior art, the beneficial effects of this utility model are: this plastic product quality inspection aid uses a flexible rotary pneumatic clamp to achieve flexible clamping of plastic products, preventing deformation, and it can drive the plastic product to rotate 360 ​​degrees. Defect detection of the entire sidewall can be performed using only a single industrial camera. Specifically:

[0016] 1. Place the plastic product on the upper part of the airtight cavity. At this time, gas is injected into the airtight cavity through a small air pump, which drives the three pneumatic grippers to move outward, so that the pneumatic grippers contact the inner wall of the plastic product and fix the position of the plastic product. When the pneumatic grippers contact the inner wall of the plastic product, the pressure sensor senses the pressure and generates feedback. The control system adjusts the air pressure in the airtight cavity in real time, thereby adjusting the force of the pneumatic grippers on the plastic product to achieve flexible clamping.

[0017] 2. During inspection, when the plastic product is rotated to the vision inspection station or the dimensional inspection station, a small rotary motor drives the rotating base to rotate, which in turn drives the plastic part to rotate, so that the outer surface of the plastic product can be inspected. After the inspection is completed, the defect detection algorithm and dimensional conversion algorithm built into the control system calculate whether the plastic product is qualified. If it is not qualified, the alarm indicator light flashes to remind the operator. The inspection efficiency is high. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a top view of the structure of this utility model;

[0021] Figure 3 This is a side view of the structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the flexible rotary pneumatic clamp structure of this utility model;

[0023] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0024] The following are the annotations in the figure: 1. Support frame; 2. Rotary worktable; 21. Rotary drive assembly; 211. Drive motor; 212. Reversing gearbox; 213. Angle encoder; 22. Flexible rotary pneumatic clamp; 221. Small rotary motor; 222. Rotating base; 223. Airtight cavity; 224. Pneumatic gripper; 225. Small air pump; 226. Pressure sensor; 3. Arc-shaped inspection fixture; 31. Vision inspection station; 311. Industrial camera; 312. Ring light source; 32. Dimension inspection station; 321. Laser displacement sensor; 33. Alarm indicator light; 4. Control system. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figures 1-5 An embodiment of this utility model provides: an auxiliary device for quality inspection of plastic products, including a support frame 1, a rotary worktable 2, an arc-shaped inspection fixture 3 and a control system 4. The rotary worktable 2 is installed on the support frame 1 and includes a rotary drive assembly 21. The rotary drive assembly 21 includes a reversing gearbox 212. A drive motor 211 is provided on the side of the reversing gearbox 212. The drive motor 211 is electrically connected to an angle encoder 213. The rotary drive assembly 21 is located at the lower end of the rotary worktable 2. An annular mounting groove is provided on the upper surface of the rotary worktable 2. Flexible rotary pneumatic clamps 22 are evenly installed in the annular mounting groove.

[0027] Please see Figures 1-5The arc-shaped inspection fixture 3 is set on the side of the rotary table 2, and its upper surface is arranged along the arc with a vision inspection station 31, a dimension inspection station 32 and an alarm indicator 33. The vision inspection station 31 includes a cantilever bracket, and a ring light source 312 and an industrial camera 311 are set on the top of the cantilever bracket. The dimension inspection station 32 includes a lifting adjustment frame, and a laser displacement sensor 321 is set on the lifting adjustment frame. The laser displacement sensor 321 points to the workpiece inspection area at a 15-degree tilt angle. There are two industrial cameras 311, which are installed on the front and top of the cantilever bracket respectively, and are used to inspect the side and top of the plastic parts respectively.

[0028] Please see Figures 1-5 The control system 4 integrates a PLC and an industrial computer, which are respectively connected to the rotary drive assembly 21, sensors at each workstation, and actuators.

[0029] In combination with the above structural features, when this utility model is in operation, the rotating worktable 2 repositions the plastic product to be inspected, eliminating the need for secondary clamping. It can then pass through the visual inspection station 31 and the dimensional inspection station 32 set on the arc-shaped inspection fixture 3, improving inspection efficiency. Through the drive motor 211 and the angle encoder 213 mounted on it, in conjunction with the control system 4, the rotation angle can be precisely adjusted with a small deviation rate. The flexible rotating pneumatic clamp 22 not only achieves flexible clamping to avoid deformation of the plastic product, but also drives the plastic product to rotate 360 ​​degrees. The entire sidewall of the plastic product can be inspected for defects and dimensions using only a single industrial camera 311 and laser displacement sensor 321. After inspection, if there are any defective products, the alarm indicator 33 will flash to remind the operator to place them in the defective product area, resulting in high inspection efficiency.

[0030] Please see Figures 1-5 The flexible rotary pneumatic clamp 22 includes a small rotary motor 221, which is fixed to the lower end of the rotary worktable 2 and has a rotating base 222 on its top. An airtight cavity 223 is fixed to the upper end of the rotating base 222. The airtight cavity 223 is hollow inside and has pneumatic grippers 224 slidably installed on its side wall. A small air pump 225 is connected to the end of the airtight cavity 223. The surface of the pneumatic grippers 224 is coated with polyurethane material and has a pressure sensor 226 on its surface. The pressure sensor 226 is connected to the control system 4. A sealing gasket is provided between the airtight cavity 223 and the pneumatic grippers 224.

[0031] In accordance with the above structural features, during operation, when clamping, the plastic product is placed on the upper end of the airtight cavity 223. At this time, gas is injected into the airtight cavity 223 by a small air pump 225, which in turn drives the three pneumatic grippers 224 to move outward, so that the pneumatic grippers 224 contact the inner wall of the plastic product, thereby fixing the position of the plastic product. When the pneumatic grippers 224 contact the inner wall of the plastic product, the pressure sensor 226 senses the pressure and generates feedback. The control system 4 adjusts the air pressure in the airtight cavity 223 in real time, thereby adjusting the pushing force of the pneumatic grippers 224 on the plastic product, so as to achieve flexible clamping and detection. When the plastic product is rotated to the visual inspection station 31 or the dimensional inspection station 32, the small rotary motor 221 drives the rotating base 222 to rotate, thereby driving the plastic part to rotate, so that the outer surface of the plastic product can be detected.

[0032] Working Principle: In use, this invention uses a rotating worktable 2 to reposition the plastic product to be inspected, eliminating the need for secondary clamping. The product can then pass through the visual inspection station 31 and dimensional inspection station 32 on the arc-shaped inspection fixture 3, improving inspection efficiency. The drive motor 211 and the angle encoder 213 mounted on it, in conjunction with the control system 4, achieve precise adjustment of the rotation angle with minimal deviation. During clamping, the plastic product is placed on the upper end of the airtight cavity 223. A small air pump 225 fills the airtight cavity 223 with gas, which in turn drives the three pneumatic grippers 224 to move outwards, bringing them into contact with the inner wall of the plastic product. With the product position fixed, the pneumatic gripper 224 contacts the inner wall of the plastic product. The pressure sensor 226 senses the pressure and generates feedback. The control system 4 adjusts the air pressure in the airtight cavity 223 in real time, thereby adjusting the force exerted by the pneumatic gripper 224 on the plastic product to achieve flexible clamping inspection. When the plastic product rotates to the vision inspection station 31 or the dimensional inspection station 32, the small rotary motor 221 drives the rotating base 222 to rotate, thereby driving the plastic part to rotate, so that the outer surface of the plastic product can be inspected. After the inspection is completed, if there are any defective products, the alarm indicator 33 will flash to remind the operator to place them in the defective product area. The inspection efficiency is high.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An auxiliary device for quality inspection of plastic products, comprising a support frame (1), a rotary worktable (2), an arc-shaped inspection fixture (3), and a control system (4), characterized in that: The rotary worktable (2) is mounted on the support frame (1) and includes a rotary drive assembly (21). The rotary drive assembly (21) is located at the lower end of the rotary worktable (2). An annular mounting groove is provided on the upper surface of the rotary worktable (2). Flexible rotary pneumatic clamps (22) are uniformly installed in the annular mounting groove. The flexible rotary pneumatic clamps (22) include a small rotary motor (221). The small rotary motor (221) is fixed at the lower end of the rotary worktable (2), and a rotary base (222) is provided on its top. An airtight cavity (223) is fixed at the upper end of the rotary base (222). The airtight cavity (223) is hollow inside, and a pneumatic gripper (224) is slidably installed on its side wall. A small air pump (225) is connected to the end of the airtight cavity (223). The arc-shaped inspection fixture (3) is set on the side of the rotary table (2), and its upper surface is arranged along the arc with a visual inspection station (31), a dimension inspection station (32) and an alarm indicator (33). The visual inspection station (31) includes a cantilever bracket, and a ring light source (312) and an industrial camera (311) are set on the top of the cantilever bracket. The dimension inspection station (32) includes a lifting adjustment frame, and a laser displacement sensor (321) is set on the lifting adjustment frame. The control system (4) integrates a PLC and an industrial computer, and is connected to the rotary drive assembly (21), sensors at each workstation, and actuators, respectively.

2. The auxiliary equipment for quality inspection of plastic products according to claim 1, characterized in that: The rotary drive assembly (21) includes a reversing gearbox (212), a drive motor (211) is provided on the side of the reversing gearbox (212), and the drive motor (211) is electrically connected to an angle encoder (213).

3. The auxiliary equipment for quality inspection of plastic products according to claim 1, characterized in that: The pneumatic gripper (224) is coated with polyurethane material and a pressure sensor (226) is provided on its surface. The pressure sensor (226) is connected to the control system (4) via signal.

4. The auxiliary equipment for quality inspection of plastic products according to claim 1, characterized in that: A sealing gasket is provided between the airtight cavity (223) and the pneumatic gripper (224).

5. The auxiliary equipment for quality inspection of plastic products according to claim 1, characterized in that: The laser displacement sensor (321) is tilted at a 15-degree angle toward the workpiece detection area.

6. The auxiliary equipment for quality inspection of plastic products according to claim 1, characterized in that: There are two industrial cameras (311), which are installed on the front and top of the cantilever bracket respectively, and are used to detect the sides and top of the plastic parts respectively.

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