A transparent blow-molded body continuous shearing and sorting equipment

Abstract

This invention discloses a continuous shearing and sorting device for transparent blow-molded materials, including a frame, an automatic feeding unit, an automatic cutting unit, and an automatic defect detection unit. The automatic cutting unit includes a vision positioning unit, a pipe clamping and cutting unit, and a pipe pulling unit. The automatic defect detection unit includes a blow-molded material moving unit and a vision detection unit. The pipe pulling unit is located directly above the pipe clamping and cutting unit and is adapted to extend into the pipe clamping and cutting unit to clamp the pipe. The vision positioning unit is located on the side of the pipe clamping and cutting unit and captures the position of the pipe in real time. The blow-molded material moving unit is adapted to transfer the pipe in the pipe clamping and cutting unit to the vision detection unit for 360° rotation detection. This device achieves continuous shearing of transparent blow-molded flexible pipes to separate the blow-molded material body from waste material, while simultaneously performing full-surface defect detection and sorting of the blow-molded material body. No manual operation is required, improving the efficiency and quality stability of shearing and detection.

Description

Technical Field

[0001] This invention relates to the field of medical device manufacturing and processing equipment technology, and in particular to a transparent blow-molded body continuous shearing and sorting equipment. Background Technology

[0002] Blow-molded flexible tubing is an important material widely used in the medical field, commonly employed in procedures such as vascular interventional therapy and cardiac catheterization. This material features high flexibility, high pressure resistance, and high abrasion resistance, reducing trauma and pain for patients during surgery. Due to the specific applications of medical blow-molded flexible tubing, the cutting process demands high precision, speed, and stable quality. Furthermore, the material's unique properties necessitate preventing burrs and collapses during cutting, maintaining the tubing's integrity and flatness. Therefore, currently, this type of tubing, after demolding, is a continuous tubular form with evenly distributed blow-molded sections, spaced apart from adjacent sections. Different specifications of blow-molded sections require different end lengths, and excess tubing in the middle is considered waste. Therefore, it can only be cut manually, which is labor-intensive, requires highly skilled operators, and is prone to uneven cutting, leading to inconsistent cutting precision and quality. Moreover, the inspection of the cut blow-molded sections relies entirely on visual inspection, resulting in low quality stability.

[0003] With the continuous development of computer vision and image processing technologies, automated inspection technology has been widely used in the field of medical device manufacturing. By utilizing image processing and pattern recognition technologies, it is possible to quickly and accurately identify surface defects in medical blow-molded bodies. Therefore, it is necessary to develop a transparent blow-molded body continuous shearing and sorting device that combines computer vision and image processing technologies to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a continuous shearing and sorting device for transparent blow-molded flexible pipes. This device enables continuous shearing of transparent blow-molded flexible pipes to separate the blow-molded body from waste material, while simultaneously performing automated detection and sorting of defects on the entire surface of the blow-molded body and within a fixed length range at both ends. This eliminates the need for manual operation and improves the efficiency and quality stability of shearing and detection.

[0005] The technical solution to achieve the objective of this invention is:

[0006] A transparent blow-molded body continuous shearing and sorting device includes a frame, a host computer, and an automatic feeding unit, an automatic cutting unit, and an automatic defect detection unit, all electrically connected to the host computer. The automatic cutting unit includes a vision positioning unit, a pipe clamping and cutting unit, and a pipe pulling unit fixedly installed on the upper part of the frame. The automatic defect detection unit includes a blow-molded body moving unit and a vision detection unit located on the side of the pipe clamping and cutting unit. The outlet of the automatic feeding unit is located directly below the pipe clamping and cutting unit. The pipe pulling unit is located directly above the pipe clamping and cutting unit and is adapted to extend into the pipe clamping and cutting unit to clamp the pipe. The vision positioning unit is located on the side of the pipe clamping and cutting unit and captures the position of the pipe in real time. The blow-molded body moving unit is located between the pipe clamping and cutting unit and the vision detection unit and is adapted to transfer the pipe in the pipe clamping and cutting unit to the vision detection unit for 360° rotation detection.

[0007] Furthermore, the blow-molded body moving unit includes a fixedly mounted four-axis robotic arm, and an electric gripper is fixedly installed at the output end of the four-axis robotic arm.

[0008] Furthermore, an air valve is fixedly installed on the side wall of the electric gripper, and the outlet of the air valve is located at the gripping center of the electric gripper.

[0009] Furthermore, the visual inspection unit includes a detection light source disposed opposite to the visual light source and a first industrial camera with an industrial lens.

[0010] Furthermore, the automatic feeding unit includes a feeding tray assembly, a first guide assembly, a feeding trigger switch, and a second guide assembly arranged in sequence. The feeding tray assembly is wound with a tube, and the free end of the tube extends from below the first guide assembly and the feeding trigger switch around the top of the second guide assembly and extends to the automatic cutting unit. The feeding trigger switch is adapted to be triggered when the tube is tensioned.

[0011] Furthermore, the feeding trigger switch includes a fixed mounting base, a tension rod rotatably mounted on the mounting base, and a magnetic tension controller signal-connected to the tension rod. The tension rod is positioned above the pipe and in contact with the pipe.

[0012] Furthermore, a time-delay stop relay is connected between the magnetic tension controller and the feeding tray assembly, and the tension rod extends to the other side of the guide plane and is provided with a height-adjustable limit rod below it.

[0013] Furthermore, the pipe clamping and cutting unit includes a lower clamping unit, a cutting unit, and an upper clamping unit arranged sequentially from bottom to top and all pneumatically controlled. The distance between the cutting plane of the cutting unit and the upper surface of the lower clamping unit is less than 1 cm.

[0014] Furthermore, it also includes a pipe constraint fixture, which includes a limiting block and a limiting tube aligned vertically. The limiting block is fixedly installed between the upper clamping unit and the lower clamping unit. The limiting tube passes through the middle of the frame and extends to the lower clamping unit at its upper end. Both the limiting tube and the limiting block have openings in the areas facing the visual positioning unit.

[0015] Furthermore, the side of the limiting tube is provided with an auxiliary clamping unit. The auxiliary clamping unit includes an auxiliary clamping cylinder that is fixedly installed on the frame and located below the lower clamping unit. The two jaws of the auxiliary clamping cylinder are respectively fixedly installed with oppositely arranged auxiliary clamping blocks. The clamping surface of the auxiliary clamping block is provided with a semi-conical notch that is smaller at the top and larger at the bottom.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects:

[0017] This invention achieves automatic conveying of blow-molded flexible tubing through the coordinated operation of an automatic feeding unit and a tubing pulling unit. A vision positioning unit captures real-time images of the tubing's position within the tubing clamping and cutting unit, automatically determining the appropriate cutting position. The tubing clamping and cutting unit then automatically cuts the waste material and the blow-molded tubing. Finally, a blow-molded tubing moving unit moves the cut individual blow-molded tubing to a vision inspection unit for surface inspection. This enables continuous cutting of transparent blow-molded flexible tubing, distinguishing between the blow-molded tubing body and waste material, while simultaneously automating the detection and sorting of surface defects on the blow-molded tubing body and within a fixed length range at both ends. No manual operation is required, improving the efficiency and quality stability of cutting and inspection.

[0018] This invention uses an electric gripper to fix and pick up the blow-molded body after cutting, and a four-axis robotic arm to move it, resulting in a simple structure.

[0019] The electric gripper of this invention is equipped with an air blowing valve. When the electric gripper fixes the upper end of the blow-molded body, air is blown through the air blowing valve to make the blow-molded body full, thereby achieving better cutting quality and avoiding wrinkles on the surface of the blow-molded body, which would affect subsequent defect detection.

[0020] This invention extends the tube winding path while setting up a dual-guide component structure, making it easier to control the tightness of the tube winding. A feeding trigger switch is set between the two guide components to realize automatic control of feeding start and stop.

[0021] The feeding trigger switch of this invention triggers the magnetic tension controller by setting a tension rod that can rotate and pass through the guide plane. When the pipe is pulled by the pipe pulling unit, the pipe between the two guide components is tightened, thereby lifting the pull rod in contact with the pipe upward, realizing the switch trigger, and then controlling the rotation of the feeding disc.

[0022] This invention adds a time-delay stop relay, which causes the feeding tray assembly to stop after the switch is triggered, allowing the pipe to return to a relaxed state after being tightened, thus preventing the pipe from being in a taut state for a long time and causing the blow-molded body to deform and fail. By setting a limit rod below the tension rod, the initial height of the tension rod can be adjusted to be appropriate, ensuring that the tension rod can be lifted by the tensioned pipe.

[0023] The pipe clamping and cutting unit of this invention clamps the pipe with a lower clamping unit to remove the waste material at the upper end of the blow-molded body, and clamps the pipe with an upper clamping unit to cut the blow-molded body, thereby achieving the predetermined size cutting of flexible pipes with continuous blow-molded bodies; by strictly controlling the distance between the cutting plane and the upper surface of the lower clamping unit, the cut of the waste material at the upper end of the blow-molded body is ensured to be flush.

[0024] The present invention adds a pipe constraint fixture to ensure the verticality of the flexible pipe along the vertical direction and further improve the straightness of the cut.

[0025] The pipe clamping and cutting unit of the present invention is equipped with an auxiliary clamping unit. When the pipe enters the cutting plane for the first time, the auxiliary clamping unit clamps the pipe, thereby increasing the opportunity to judge the position of the blow molded body. After confirming that the position is accurate, the lower clamping unit fixes the pipe to achieve precise cutting. Attached Figure Description

[0026] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0027] Figure 1 This is a perspective view of the present invention;

[0028] Figure 2 This is a schematic diagram showing the assembly position structure of the automatic feeding unit, vision positioning unit, pipe clamping and cutting unit, and pipe pulling unit of the present invention;

[0029] Figure 3 This is a simplified structural diagram of the automatic feeding unit of the present invention;

[0030] Figure 4 This is a simplified structural diagram of the pipe clamping and cutting unit of the present invention;

[0031] Figure 5 This is a cross-sectional view of the pipe clamping and cutting unit of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of the blow-molded body moving unit of the present invention.

[0033] The labels in the attached diagram are:

[0034] Rack 1;

[0035] Automatic feeding unit 2, feeding tray assembly 2-1, base 2-1-1, feeding tray 2-1-2, motor 2-1-3, rotating shaft 2-1-4, drive wheel 2-1-5, first guide assembly 2-2, first support 2-2-1, first guide wheel 2-2-2, first guide ring 2-2-3, feeding trigger switch 2-3, mounting base 2-3-1, tension rod 2-3-2, limit rod 2-3-3, second guide assembly 2-4, second support 2-4-1, second guide wheel 2-4-2, second guide ring 2-4-3;

[0036] Visual positioning unit 3, positioning light source 3-1, second industrial camera 3-2;

[0037] Pipe clamping and cutting unit 4, lower clamping unit 4-1, lower clamping cylinder 4-1-1, lower clamp 4-1-2, cutting unit 4-2, tool clamping cylinder 4-2-1, blade 4-2-2, tool holder 4-2-3, upper clamping unit 4-3, upper clamping cylinder 4-3-1, upper clamp 4-3-2, pipe constraint fixture 4-4, limiting block 4-4-1, limiting tube 4-4-2, auxiliary clamping unit 4-5, auxiliary clamping cylinder 4-5-1, auxiliary clamping block 4-5-2;

[0038] Pipe pulling unit 5, servo slide 5-1, telescopic cylinder 5-2, pulling and clamping cylinder 5-3, clamping plate 5-4;

[0039] Blow-molded body moving unit 6, four-axis robotic arm 6-1, electric gripper 6-2, air blowing valve 6-3;

[0040] Visual inspection unit 7, inspection light source 7-1, first industrial camera 7-2. Detailed Implementation

[0041] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0042] (Example 1)

[0043] like Figures 1 to 6The transparent blow-molded body continuous shearing and sorting equipment shown includes a frame 1, a host computer, and an automatic feeding unit 2, an automatic cutting unit, and an automatic defect detection unit, all electrically connected to the host computer. The automatic cutting unit includes a vision positioning unit 3, a pipe clamping and cutting unit 4, and a pipe pulling unit 5, all fixedly mounted on the upper part of the frame 1. The automatic defect detection unit includes a blow-molded body moving unit 6 and a vision detection unit 7 located on the side of the pipe clamping and cutting unit 4. The outlet of the automatic feeding unit 2 is located directly below the pipe clamping and cutting unit 4. The pipe pulling unit 5 is located directly above the pipe clamping and cutting unit 4 and is adapted to extend into the pipe clamping and cutting unit 4 to clamp the pipe, thus cooperating with the automatic feeding unit 2 to achieve automatic feeding of the flexible blow-molded pipe. The vision positioning unit 3 is located on the side of the pipe clamping and cutting unit 4 and captures the pipe position in real time, sending the captured image to the host computer for automatic determination of the appropriate cutting position. The blow molding body moving unit 6 is located between the pipe clamping and cutting unit 4 and the vision inspection unit 7 and is adapted to transfer the pipe in the pipe clamping and cutting unit to the vision inspection unit for 360° rotation inspection, thereby realizing surface inspection.

[0044] Specifically, the automatic feeding unit 2 includes a feeding tray assembly 2-1, a first guide assembly 2-2, a feeding trigger switch 2-3, and a second guide assembly 2-4 arranged sequentially. The feeding tray assembly 2-1 includes a base 2-1-1, a feeding tray 2-1-2 rotatably mounted on the base 2-1-1, and a drive unit fixedly mounted on the base 2-1-1, which is drively connected to the feeding tray 2-1-2 and adapted to drive the feeding tray 2-1-2 to rotate. In this embodiment, the drive unit includes a motor 2-1-3 fixedly mounted on the base 2-1-1 and a rotating shaft 2-1-4 coaxially fixedly connected to the output shaft of the motor 2-1-3. The rotating shaft 2-1-4 is parallel to the axial direction of the feeding tray 2-1-2 and a drive wheel 2-1-5 that is in frictional contact with the side of the feeding tray 2-1-2 is coaxially fixedly mounted on it, thereby driving the feeding tray 2-1-2 to rotate.

[0045] The first guide assembly 2-2 includes a first support 2-2-1, a first guide wheel 2-2-2, and a first guide ring 2-2-3. The first guide wheel 2-2-2 is rotatably mounted on the first support 2-2-1. The upper part of the first support 2-2-1 is provided with multiple adjustment holes in the vertical direction. The first guide ring 2-2-3 is installed on the side above the first guide wheel 2-2-2 near the feeding tray assembly 2-1 by bolts tightened into different adjustment holes to achieve height adjustment. The first guide ring 2-2-3 is installed at an angle on the first support 2-2-1, so that the pipe on the feeding tray 2-1-2 can enter the first guide wheel 2-2-2 more smoothly. The second guide assembly 2-4 includes a second support 2-4-1, a second guide wheel 2-4-2, and a second guide ring 2-4-3. The second guide wheel 2-4-2 is rotatably mounted on the second support 2-4-1. The second guide ring 2-4-3 adopts the same structure as the first guide ring 2-2-3 and is horizontally mounted on the second support 2-4-1 with adjustable height. It is located above the second guide wheel 2-4-2 and the ring opening faces the entrance of the pipe clamping and cutting unit 4, ensuring that the pipe can enter the pipe clamping and cutting unit 4 in a vertical direction. Both the guide ring and the guide wheel are made of ceramic material, which will not damage the surface of the flexible pipe.

[0046] The feeding trigger switch 2-3 includes a fixed mounting base 2-3-1, a tension rod 2-3-2 rotatably mounted on the mounting base 2-3-1, and a magnetic tension controller connected to the tension rod 2-3-2. The tension rod 2-3-2 extends to the other side of the guide plane and has a height-adjustable limit rod 2-3-3 below it, thereby adjusting the initial height of the tension rod 2-3-2 to a suitable level, ensuring that the tension rod 2-3-2 can be lifted by the tensioned pipe. After demolding, the tube is wound around the feeding tray 2-1-2, and then the feeding tray 2-1-2 is installed on the base 2-1-1. The free end of the tube enters the first guide wheel 2-2-2 from the first guide ring 2-2-3, passes under the tension rod 2-3-2 and the second guide wheel 2-4-2, and extends out from the second guide ring 2-4-3 to the automatic cutting unit. In the initial state, the tube is in a relaxed state and is in contact with the tension rod 2-3-2. When the tube pulling unit 5 pulls the tube, the tube is in a tensile state, which drives the tension rod 2-3-2 to lift upward, thereby triggering the magnetic tension controller connected to the motor 2-1-3, thereby controlling the start and stop of the feeding tray assembly 2-1. Since the flexible tube cannot be stretched for a long time, this embodiment has a delayed stop relay in the signal connection between the magnetic tension controller and the motor 2-1-3. In this embodiment, the tension rod is set with an upward lifting force of 0.05N, and the delayed stop relay is set with a delay stop time of 2 seconds, so that the tube returns to a relaxed state after being tightened, avoiding the tube being in a taut state for a long time, which would cause the blow molded body to deform and fail.

[0047] The pipe pulling unit 5 includes a servo slide 5-1 vertically fixedly installed in the middle of the frame 1. A telescopic cylinder 5-2, arranged horizontally, is fixedly installed on the sliding block of the servo slide 5-1. A pulling and clamping cylinder 5-3, arranged vertically, is fixedly installed at the output end of the telescopic cylinder 5-2. Two clamping jaws of the pulling and clamping cylinder 5-3 are respectively fixedly installed with opposing clamping plates 5-4 with semi-circular cross-sections. The clamping plates 5-4 are raised, lowered, and translated by the servo slide 5-1 and the telescopic cylinder 5-2, respectively, thereby aligning and clamping the pipe in the pipe clamping and cutting unit 4, achieving upward pulling. The structure is simple, the action is fast, and the control is convenient.

[0048] The visual positioning unit 3 includes a positioning light source 3-1 symmetrically arranged on both sides of the pipe clamping and cutting unit 4 and a second industrial camera 3-2 with a fixed-focus lens, so as to capture the position of the flexible pipe in real time.

[0049] The pipe clamping and cutting unit 4 includes, from bottom to top, a lower clamping unit 4-1, a cutting unit 4-2, and an upper clamping unit 4-3, all pneumatically controlled. The lower clamping unit 4-1 includes a lower clamping cylinder 4-1-1 fixedly mounted vertically upwards on the middle of the frame 1, and lower clamps 4-1-2 horizontally mounted on two jaws of the lower clamping cylinder 4-1-1. The two lower clamps 4-1-2 are positioned opposite each other, and their clamping surfaces have semi-circular grooves. The cutting unit 4-2 includes a tool clamping cylinder 4-2-1 horizontally fixedly mounted on the middle of the frame 1. A blade 4-2-2 is fixedly mounted on one jaw of the tool clamping cylinder 4-2-1, and a tool holder 4-2-3 adapted to the blade 4-2-2 is fixedly mounted on the other jaw. The upper clamping unit 4-3 includes an upper clamping cylinder 4-3-1 horizontally mounted on the tool clamping cylinder 4-2-1 and an upper clamping fixture 4-3-2 respectively fixedly mounted on the two jaws of the upper clamping cylinder 4-3-1.

[0050] The blow-molded body moving unit 6 includes a four-axis robotic arm 6-1 fixedly mounted in the middle of the frame 1, with an electric gripper 6-2 fixedly mounted at the output end of the four-axis robotic arm 6-1. The vision inspection unit 7 includes a detection light source 7-1 and a first industrial camera 7-2 with an industrial lens, which are arranged opposite each other.

[0051] The pipe is pulled upwards by the pipe pulling unit 5. When the waste material at the upper end of the blow-molded body enters the cutting unit 4-2, the lower clamping unit 4-1 clamps the lower end of the pipe of the blow-molded body, and the cutting unit 4-2 removes the waste material. Subsequently, the electric gripper 6-2 moves above the pipe clamping and cutting unit 4 and penetrates into it to clamp the upper end of the pipe of the blow-molded body, so that the blow-molded body enters between the lower clamping unit 4-1 and the upper clamping unit 4-3, and both ends are clamped. The clamping force of the electric gripper 6-2 is set to 0.1N to avoid excessive clamping force that could cause severe deformation of the top of the flexible blow-molded body. The cutting unit 4-2 cuts the blow-molded body, and after cutting, it is moved to the vision inspection unit 7 for inspection. For convenient material storage, qualified product boxes and unqualified product boxes are provided on the side of the vision inspection unit 7. According to the inspection structure, the four-axis robotic arm places the blow-molded body into the corresponding box.

[0052] Since only the lower end of the waste is fixed when cutting it, in order to ensure that the cut is flush, the distance between the cutting plane of the cutting unit and the upper surface of the lower clamping unit 4-1 in this embodiment is less than 1 cm.

[0053] To further improve cutting quality, this embodiment adds a tube constraint fixture 4-4 and an auxiliary clamping unit 4-5. The tube constraint fixture is located through the middle of the frame 1 and includes a limiting block 4-4-1 and a limiting tube 4-4-2, which are longitudinally aligned and each has a through hole with an inner diameter slightly larger than the outer diameter of the blow molding body. The limiting block 4-4-1 is fixedly installed between the upper clamping unit 4-3 and the lower clamping unit 4-1. The limiting tube 4-4-2 passes through the worktable and extends to the lower clamping unit 4-1 at its upper end. To avoid interference with the visual camera, both the limiting tube 4-4-2 and the limiting block 4-4-1 have openings in the areas facing the visual positioning unit 3. The auxiliary clamping unit 4-5 includes an auxiliary clamping cylinder 4-5-1 fixedly installed on the lower surface of the middle part of the frame 1. Two grippers of the auxiliary clamping cylinder 4-5-1 are respectively fixedly mounted with opposing auxiliary clamping blocks 4-5-2. The clamping surfaces of the auxiliary clamping blocks 4-5-2 are provided with auxiliary clamping blocks 3-5-2. When the pipe first enters the cutting plane, the auxiliary clamping unit 4-5 clamps the pipe, thereby increasing the opportunity for position determination of the blow molded part. After confirming accurate positioning, the lower clamping unit 4-1 then fixes the pipe, achieving precise cutting.

[0054] Considering that flexible tubing is prone to wrinkling and deformation, this embodiment has an air blowing valve 6-3 fixedly installed on the side wall of the electric gripper 6-2, with the outlet of the air blowing valve 6-3 located at the clamping center of the electric gripper 6-2. When the electric gripper 6-2 fixes the upper end of the blow-molded body, air is blown through the air blowing valve 6-3 to make the blow-molded body full, thereby achieving better cutting quality and avoiding wrinkles on the surface of the blow-molded body, which would affect subsequent defect detection.

[0055] For convenient display, a display unit is also provided on rack 1. The display unit consists of two screens, a large 23-inch screen, which is used to display real-time detection images, select the model of the blow molded body to be tested, input new model blow molded bodies, and export data traceability; the small 10-inch touch screen is used to start / stop operation and display equipment operating data, etc.

[0056] The working process of this embodiment:

[0057] A feeding tray filled with blow-molded flexible tubing is installed on the base, with baffles on both sides of the feeding tray in close contact with the drive wheel. The free end of the flexible tubing in the feeding tray passes sequentially through the first guide ring, through the bottom of the first guide wheel and the bottom of the tension rod in the feeding trigger switch, then sequentially through the second guide wheel and the second guide ring, and finally through the tubing constraint fixture.

[0058] The host computer controls the opening of the clamping cylinders, tool clamping cylinders, and auxiliary clamping cylinders at the upper and lower ends of the blow molding body, allowing the pipe to pass through the top of the constraint fixture; the host computer then controls the pipe pulling unit to pull the pipe upwards.

[0059] The selection is based on the specifications of the blow-molded body pre-entered by the host computer. The vision positioning unit monitors in real time and identifies and positions the upper edge of the blow-molded body. The auxiliary clamping cylinder tightens first and performs secondary positioning. After confirmation of qualification, the lower clamping cylinder tightens, and the cutting unit cuts the top of the blow-molded body. Then, the pipe pulling unit pulls out the cut waste material and puts it into the preset waste bin.

[0060] The pipe pulling unit continues to move to the top of the blow molding body and clamps the blow molding body. At this time, each cylinder is released. After the pipe pulling unit clamps the pipe, it moves upward. When the visual positioning unit 3 identifies and positions the lower edge of the blow molding body, it stops pulling. At this time, each cylinder is clamped. After the upper end of the blow molding body is fixed by the upper clamping unit, the pipe pulling unit is released and reset.

[0061] The electric gripper moves to the top of the blow-molded body, the air valve opens to blow air, and the bottom of the blow-molded body is cut at the same time. After the cutting is completed, the electric gripper moves the blow-molded body to the automatic defect detection unit for 360° rotation detection. The host computer performs image processing and data processing simultaneously. After the rotation is completed, the good and bad material results are output in real time. According to the judgment result, the blow-molded body is moved to the top of the qualified / unqualified box, the gripper is released, the sorting and reset are completed, and one cycle of detection is completed.

[0062] This invention achieves automatic conveying of blow-molded flexible tubing through the coordinated operation of an automatic feeding unit and a tubing pulling unit. A vision positioning unit captures real-time images of the tubing's position within the tubing clamping and cutting unit, automatically determining the appropriate cutting position. The tubing clamping and cutting unit then automatically cuts the waste material and the blow-molded tubing. Finally, a blow-molded tubing moving unit moves the cut individual blow-molded tubing to a vision inspection unit for surface inspection. This enables continuous cutting of transparent blow-molded flexible tubing, distinguishing between the blow-molded tubing body and waste material, while simultaneously automating the detection and sorting of surface defects on the blow-molded tubing body and within a fixed length range at both ends. No manual operation is required, improving the efficiency and quality stability of cutting and inspection.

[0063] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. 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 continuous shear cut sorting apparatus for transparent blow molded bodies, characterized by: The system includes a frame, a host computer, and an automatic feeding unit, an automatic cutting unit, and an automatic defect detection unit, all electrically connected to the host computer. The automatic cutting unit includes a vision positioning unit, a pipe clamping and cutting unit, and a pipe pulling unit, all fixedly installed on the upper part of the frame. The automatic defect detection unit includes a blow molding body moving unit and a vision detection unit located on the side of the pipe clamping and cutting unit. The outlet of the automatic feeding unit is located directly below the pipe clamping and cutting unit. The pipe pulling unit is located directly above the pipe clamping and cutting unit and is adapted to extend into the pipe clamping and cutting unit to clamp the pipe. The vision positioning unit is located on the side of the pipe clamping and cutting unit and captures the position of the pipe in real time. The blow molding body moving unit is located between the pipe clamping and cutting unit and the vision detection unit and is adapted to transfer the pipe in the pipe clamping and cutting unit to the vision detection unit for 360° rotation detection. The automatic feeding unit includes a feeding tray assembly, a first guide assembly, a feeding trigger switch, and a second guide assembly arranged in sequence. The feeding tray assembly is wound with a tube, and the free end of the tube is wound from below the first guide assembly and the feeding trigger switch around the top of the second guide assembly and extends to the automatic cutting unit. The feeding trigger switch is adapted to be triggered when the tube is tensioned. The pipe clamping and cutting unit includes a lower clamping unit, a cutting unit, and an upper clamping unit arranged sequentially from bottom to top and all pneumatically controlled. The distance between the cutting plane of the cutting unit and the upper surface of the lower clamping unit is less than 1 cm.

2. The transparent blow-molded body continuous shearing and sorting equipment according to claim 1, characterized in that: The blow-molded body moving unit includes a fixedly installed four-axis robotic arm, and an electric gripper is fixedly installed at the output end of the four-axis robotic arm.

3. The transparent blow-molded body continuous shearing and sorting equipment according to claim 2, characterized in that: An air valve is fixedly installed on the side wall of the electric gripper, and the outlet of the air valve is located at the gripping center of the electric gripper.

4. The transparent blow-molded body continuous shearing and sorting equipment according to claim 1, characterized in that: According to claim 1, a continuous shearing and sorting device for transparent blow-molded bodies is characterized in that: the visual inspection unit includes a detection light source and a first industrial camera with an industrial lens arranged opposite to each other.

5. The transparent blow-molded body continuous shearing and sorting equipment according to claim 1, characterized in that: The feeding trigger switch includes a fixed mounting base, a tension rod rotatably mounted on the mounting base, and a magnetic tension controller connected to the tension rod via a signal. The tension rod is positioned above the pipe and in contact with the pipe.

6. The transparent blow-molded body continuous shearing and sorting equipment according to claim 5, characterized in that: The magnetic tension controller is connected to the feeding tray assembly via a delayed stop relay. The tension rod extends to the other side of the guide plane and has a height-adjustable limit rod below it.

7. The transparent blow-molded body continuous shearing and sorting equipment according to claim 1, characterized in that: It also includes a pipe constraint fixture, which includes a limiting block and a limiting tube aligned vertically. The limiting block is fixedly installed between the upper clamping unit and the lower clamping unit. The limiting tube passes through the middle of the frame and extends to the lower clamping unit at its upper end. Both the limiting tube and the limiting block have openings in the areas facing the visual positioning unit.

8. The transparent blow-molded body continuous shearing and sorting equipment according to claim 7, characterized in that: The side of the limiting tube is provided with an auxiliary clamping unit. The auxiliary clamping unit includes an auxiliary clamping cylinder that is fixedly installed on the frame and located below the lower clamping unit. The two jaws of the auxiliary clamping cylinder are respectively fixedly installed with oppositely arranged auxiliary clamping blocks. The clamping surface of the auxiliary clamping block is provided with a semi-conical notch that is smaller at the top and larger at the bottom.

Images