A production process of polytetrafluoroethylene sleeve and matched drag chain for dustproof cable

Abstract

This invention provides a production process for PTFE tubing and matching cable carriers for dustproof cables, belonging to the technical field of cable packaging products. It solves the problem that existing tubing and cable carriers lack a spray coating process to improve surface performance. The process includes the following steps: a unit tube molded from PTFE is placed on a unit tube coating process line for forward conveying. The coating process line conveys the unit tube to be coated to the first spraying station, where the upper half of the unit tube is coated by a first spraying device. The unit tube then continues forward conveying and rotating to switch the lower half to the upper half, and then enters the second spraying station. Compared with the prior art, this invention can coat both the cable tubing and cable carrier with a protective layer, improving their durability, corrosion resistance, oxidation resistance, and dustproof properties.

Description

Technical Field

[0001] This invention belongs to the technical field of cable packaging products, and relates to a production process for a polytetrafluoroethylene sleeve and matching drag chain for dustproof cables. Background Technology

[0002] Cables are used to transmit electrical energy and signals. To ensure safety, the outer ring of the cable needs to be wrapped with an insulating sleeve. However, in industrial equipment, using only a sleeve is often insufficient. Cable chains are also needed to restrain and protect the cable to facilitate its rotation and movement.

[0003] The conventional manufacturing processes for cable sleeves and cable chains are mature technologies. For example, Chinese invention patent number "CN202111310109.1" entitled "A Cable Sleeve and Its Manufacturing Process" describes the forming method of the sleeve, which is composed of segmented unit tubes. Cable chains, on the other hand, are formed by connecting individual cable chain units.

[0004] Because casings and cable chains are frequently exposed to the open environment, an anti-oxidation layer and an anti-corrosion layer can be coated on their outer surfaces to improve their durability and prevent dust and damage. Since the outer ring of the casing is cylindrical and the outer ring of the cable chain is irregular, neither of them are flat products. Therefore, coating the casings and cable chains requires a spraying method. Once the compound sprayed on the casings and cable chains dries, the required anti-oxidation and anti-corrosion layers will form.

[0005] Therefore, there is an urgent need to develop a process line for spraying and coating sleeves and cable chains. Summary of the Invention

[0006] The purpose of this invention is to address the problem that existing sleeves and cable chains lack spray coating processes that can improve surface performance, and to propose a production process for polytetrafluoroethylene sleeves and matching cable chains for dustproof cables.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A manufacturing process for a polytetrafluoroethylene (PTFE) sleeve and matching cable chain for dustproof cables, characterized by comprising the following steps:

[0009] Step 1: The unit tubes made of polytetrafluoroethylene are placed on the unit tube coating process line for forward conveying. The unit tube coating process line conveys the unit tubes to be coated to the first spraying station. The first spraying device completes the spraying work on the upper half of the unit tube. Then the unit tube continues to be conveyed forward and rotated to switch the lower half to the upper half. Then it enters the second spraying station, where the second spraying device completes the spraying work on the lower half of the unit tube. The unit tube is sent out of the unit tube coating process line and dried by drying equipment or air drying. After the compound sprayed on the surface of the unit tube dries, it forms a protective layer.

[0010] Step 2: The cable chain unit is fed into the cable chain unit coating process line. The cable chain unit coating process line transports the cable chain unit to be coated to the third spraying station. The third spraying device completes the spraying work on the outer surfaces of the cable chain unit except for the bottom surface. Then the cable chain unit continues to move forward and rotates 180° to switch the bottom surface to the top. Then it enters the fourth spraying station. The fourth spraying device completes the spraying work on the cable chain unit except for the bottom surface. The cable chain unit is sent out of the unit tube coating process line and dried by drying equipment or air drying. After the compound sprayed on the surface of the cable chain unit dries, it forms a protective layer.

[0011] In the above-mentioned production process of polytetrafluoroethylene sleeve and matching drag chain for dustproof cables, the unit tube coating process line includes a first conveyor line and a second conveyor line fixed at an inclination, as well as an inclination tumbling and reversing component. After being conveyed to the tail end by the first conveyor line, the unit tube first enters the tumbling and reversing component to complete the tumbling operation, and then enters the second conveyor line for continued conveying. The tube opening of the unit tube faces the same direction of travel of the first conveyor line and the second conveyor line. The unit tube fed into the tumbling and reversing component from the first conveyor line is pushed into the tumbling and reversing component by the squeezing force provided by the continuous travel of the unit tube at its rear end. The first conveyor line and the second conveyor line are staggered in the conveying direction.

[0012] In the above-mentioned production process of polytetrafluoroethylene sleeve and matching drag chain for dustproof cable, the tumbling reversing component includes a support body, a movable plate, a material clamping plate, and a receiving plate, a feeding plate, and a CNC pushing cylinder fixed on the support body.

[0013] The support frame is fixedly installed, and the material clamping plate is raised and lowered on the support frame via a lifting rod.

[0014] The receiving plate and the feeding plate are arranged on the same side and staggered from each other. The receiving plate is placed at the tail end of the first conveyor line and the feeding plate is placed at the head end of the second conveyor line.

[0015] The clamping plate is located at the junction of the receiving plate and the feeding plate, and is used to prevent the unit tubes on the receiving plate from rolling onto the feeding plate;

[0016] A fixed block is provided at the end of the receiving plate away from the first conveyor line. A through hole is provided on the fixed block. A movable rod is slidably provided in the through hole. The end of the movable rod is fixed to the movable plate. A spring is also sleeved on the movable rod. The two ends of the spring are fixed to the movable plate and the fixed block, respectively.

[0017] The receiving plate is also equipped with a first gear and a second gear that mesh with each other. The side of the movable plate is fixed with a horizontal rack, and the end face of the clamping plate is fixed with a vertical rack. The horizontal rack meshes with the first gear, and the vertical rack meshes with the second gear. After the movable plate moves toward the fixed block, the clamping plate is lowered synchronously through the horizontal rack, the first gear, the second gear, and the vertical rack in sequence. The lowering of the clamping plate realizes the clearance function so that the unit tube on the receiving plate rolls onto the feeding plate under the inclined gravitational potential energy.

[0018] The feeding plate is equipped with a baffle plate, which is used to block the unit tubes rolling over from the clamping plate;

[0019] The piston rod end of the CNC pusher cylinder is equipped with a pusher plate, which can push the unit tube on the feeding plate into the second conveyor line.

[0020] In the above-mentioned production process of polytetrafluoroethylene sleeve and matching drag chain for dustproof cables, the unit tube is rotated at an angle of 90 degrees to 270 degrees during the rolling process of the receiving plate and the rolling feed plate.

[0021] In the above-mentioned production process of polytetrafluoroethylene sleeve and matching drag chain for dustproof cable, the first conveyor line and the second conveyor line are the same conveying device. The conveying device includes a conveyor frame, conveyor wheels, conveyor belt and conveyor drive components. The conveyor frame is also equipped with a stop bar, which is located beside the path of the conveyor belt.

[0022] In the above-mentioned production process of polytetrafluoroethylene sleeve and matching drag chain for dustproof cables, the drag chain unit coating process line includes a horizontal spray coating conveyor line, a flip panel and a flipping component. The horizontal spray coating conveyor line includes a front-end conveyor line and a rear-end conveyor line that are connected to each other. The flip panel is set at the junction of the front-end conveyor line and the rear-end conveyor line and is located above the rear-end conveyor line. The height of the front-end conveyor line is higher than that of the rear-end conveyor line. In the initial state, the flip panel is located at the same height as the front-end conveyor line and is tightly connected to the front-end conveyor line. The flipping component is used to drive the flip panel to be raised and rotated 180 degrees before being lowered back to the initial position. After receiving the drag chain workpiece from the front-end conveyor line, the flip panel rotates 180 degrees and then throws the drag chain workpiece down to the rear-end conveyor line. The front and back sides of the flip panel are provided with fixing components for fixing and releasing the drag chain.

[0023] Compared with the prior art, the present invention can coat both the cable sheath and the cable chain with a protective layer, which can improve the durability, corrosion resistance, oxidation resistance, dust resistance and other properties of the sheath and cable chain. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the unit tube coating process line;

[0025] Figure 2 This is a structural schematic diagram of the tumbling reversing component;

[0026] Figure 3 This is a schematic diagram of the conveyor line;

[0027] Figure 4 This is a structural diagram of the flipping component in its first state;

[0028] Figure 5 This is a structural diagram of the flipping component in its second state;

[0029] Figure 6 This is a structural diagram of the flipping component in its third state;

[0030] Figure 7 This is a structural diagram of the flipping component in its fourth state;

[0031] Figure 8 This is a schematic diagram of the structure from the back view of the flipping component in its fourth state;

[0032] Figure 9 This is a structural diagram of the flipping component in its fifth state;

[0033] Figure 10 This is a schematic diagram of the structure from the back of the flip-up component in its fifth state.

[0034] Figure 11 This is a structural diagram of the flipping component in its sixth state;

[0035] Figure 12 This is a structural diagram of the flipping component in its seventh state;

[0036] Figure 13 This is a structural diagram of the flipping component in its eighth state;

[0037] Figure 14 This is a structural diagram of the flipping component in its ninth state;

[0038] Figure 15 This is a structural diagram of the flipping component in its tenth state;

[0039] Figure 16 This is a structural diagram of the flipping component in its eleventh state;

[0040] In the diagram, 1. Movable plate; 2. Material clamping plate; 3. Material receiving plate; 4. Material feeding plate; 5. CNC pusher cylinder; 6. Fixed block; 7. Movable rod; 8. Spring; 9. First gear; 10. Second gear; 11. Horizontal rack; 12. Vertical rack; 13. Blocking plate; 14. Stop bar; 1a. Flip panel; 2a. Front conveyor line; 3a. Rear conveyor line; 4a. Horizontal slide rail; 5a. Base; 6a. Translation block; 7a. Lifting slide rail; 8a. Movable block; 9a. Triangular block; 10a. Upright pole; 11a. Truss; 12a. Notch; 13a. Main shaft; 14a. Flipping plate; 15a. Flipping rod; 16a. Magnetic rod; 17a. Magnet. Detailed Implementation

[0041] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0042] The production process of the polytetrafluoroethylene (PTFE) sheath and matching drag chain for dustproof cables of the present invention is divided into two process lines. One process line is used for spray coating of the unit tubes of the PTFE sheath, and the other process line is used for spray coating of the drag chain units.

[0043] This process consists of the following two steps:

[0044] Step 1: The unit tubes made of polytetrafluoroethylene are placed on the unit tube coating process line for forward conveying. The unit tube coating process line conveys the unit tubes to be coated to the first spraying station. The first spraying device completes the spraying work on the upper half of the unit tube. Then the unit tube continues to be conveyed forward and rotated to switch the lower half to the upper half. Then it enters the second spraying station, where the second spraying device completes the spraying work on the lower half of the unit tube. The unit tube is sent out of the unit tube coating process line and dried by drying equipment or air drying. After the compound sprayed on the surface of the unit tube dries, it forms a protective layer.

[0045] Step 2: The cable chain unit is fed into the cable chain unit coating process line. The cable chain unit coating process line transports the cable chain unit to be coated to the third spraying station. The third spraying device completes the spraying work on the outer surfaces of the cable chain unit except for the bottom surface. Then the cable chain unit continues to move forward and rotates 180° to switch the bottom surface to the top. Then it enters the fourth spraying station. The fourth spraying device completes the spraying work on the cable chain unit except for the bottom surface. The cable chain unit is sent out of the unit tube coating process line and dried by drying equipment or air drying. After the compound sprayed on the surface of the cable chain unit dries, it forms a protective layer.

[0046] The first, second, third, and fourth spraying devices function to spray a high-performance compound onto the surface of the cable chain workpiece. Once the compound dries, it forms a protective layer on the surface of the cable chain workpiece. Since spraying equipment is already quite mature in the existing technology, this invention will not elaborate further.

[0047] There are many options for the coating materials mentioned above that form the protective layer. Any chemical substance that can solidify at room temperature and has antioxidant and corrosion-resistant properties is acceptable.

[0048] In particular, because the spraying process is required for tubular workpieces such as unit tubes, and the spraying nozzle cannot directly complete the spraying work on all parts of the unit tube in one go, after implementing the first spraying process, it is necessary to change the orientation of the unit tube and then perform a second spraying to achieve a complete full-coverage spraying effect.

[0049] Furthermore, since the cable chain units also require a painting process, the cable chains need to be flipped at least once. This is because during the painting process on the conveyor line, the top and sides of the cable chain can be painted, but the bottom surface cannot. Therefore, the cable chains should be flipped so that the bottom surface, which was originally facing down, is now facing up for painting. However, because the production volume on the cable chain unit production line is very high, using a robotic arm to flip each cable chain individually would be extremely inefficient. Therefore, if a robotic arm were used for flipping, multiple sets of robotic arms would need to be purchased side-by-side to process multiple cable chains simultaneously, resulting in very high equipment costs. Therefore, the flipping operation of the cable chain units is only required on the conveyor line during the manufacturing process of cable chains that require coating.

[0050] Therefore, the unit tube coating process line and the drag chain unit coating line require special development and design.

[0051] like Figure 1 and Figure 2 As shown, the unit tube coating process line includes a first conveyor line and a second conveyor line that are fixed at an inclination, as well as an inclined tumbling and reversing component. After being conveyed to the tail end by the first conveyor line, the unit tube first enters the tumbling and reversing component to complete the tumbling operation, and then enters the second conveyor line for continued conveying. The tube opening faces the same direction of travel of the first conveyor line and the second conveyor line. The unit tube fed into the tumbling and reversing component from the first conveyor line is pushed into the tumbling and reversing component by the squeezing force provided by the continuous travel of the unit tube at its rear end. The first conveyor line and the second conveyor line are staggered in the conveying direction.

[0052] like Figure 2 As shown, the tumbling reversing component includes a support body, a movable plate 1, a clamping plate 2, a receiving plate 3, a feeding plate 4, and a CNC pushing cylinder 5, all fixed on the support body.

[0053] The support body is fixedly set, and the material clamping plate 2 is raised and lowered on the support body by a lifting rod (a lifting hole is opened on the support body, and the lifting rod is raised and lowered in the lifting hole to achieve this function).

[0054] The receiving plate 3 and the feeding plate 4 are arranged on the same side and staggered from each other. The receiving plate 3 is attached to the tail end of the first conveyor line, and the feeding plate 4 is attached to the head end of the second conveyor line.

[0055] The clamping plate 2 is located at the junction of the receiving plate 3 and the feeding plate 4, and is used to prevent the unit tube on the receiving plate 3 from rolling onto the feeding plate 4.

[0056] The receiving plate 3 is provided with a fixed block 6 at the end away from the first conveyor line. A through hole is provided on the fixed block 6, and a movable rod 7 is slidably provided in the through hole. The end of the movable rod 7 is fixed on the movable plate 1. A spring 8 is also sleeved on the movable rod 7. The two ends of the spring 8 are respectively fixed on the movable plate 1 and the fixed block 6.

[0057] The receiving plate 3 is also rotatably equipped with a first gear 9 and a second gear 10 that mesh with each other. The side of the movable plate 1 is fixedly equipped with a horizontal rack 11, and the end face of the clamping plate 2 is fixedly equipped with a vertical rack 12. The horizontal rack 11 meshes with the first gear 9, and the vertical rack 12 meshes with the second gear 10. After the movable plate 1 moves towards the fixed block 6, the clamping plate 2 is synchronously lowered by the horizontal rack 11, the first gear 9, the second gear 10, and the vertical rack 12 in sequence. The lowering of the clamping plate 2 realizes the clearance function so that the unit tube on the receiving plate 3 can roll onto the feeding plate 4 under the inclined gravitational potential energy.

[0058] The feeding plate 4 is provided with a blocking plate 13, which is used to block the unit tubes rolling over from the clamping plate 2.

[0059] The piston rod end of the CNC pusher cylinder 5 is equipped with a pusher plate, which can push the unit tube on the feeding plate 4 into the second conveyor line.

[0060] like Figure 2 As shown, the unit tube is conveyed from the first conveyor line. After the front unit tube enters the receiving plate 3, the rear unit tube continues to move and will squeeze the front unit tube. Then the front unit tube will squeeze the movable plate 1, causing the movable plate 1 to retract. The retraction process of the movable plate 1 is achieved through the linkage of the horizontal rack 11, the first gear 9, the second gear 10, and the vertical rack 12. Finally, the clamping plate 2 will move down and no longer clamp the unit tube. The unit tube will roll from the receiving plate 3 to the feeding plate 4. This rolling process is the angle flipping process. After the unit tube is on the feeding plate 4, it is pushed to the second conveyor line by the CNC pusher cylinder 5.

[0061] The unit tube rotates from the receiving plate 3 to the feeding plate 4 during the rolling process, causing it to flip at an angle of 90 degrees to 270 degrees.

[0062] The first and second conveyor lines use the same conveying device, which includes a conveyor frame, conveyor wheels, a conveyor belt, and a conveying drive component. The conveyor frame is also equipped with a stop bar 14, which is located beside the path of the conveyor belt. Because the conveyor device is inclined, the presence of the stop bar 14 prevents the unit tube from rolling away from the side due to the inclination. The layout of the conveyor lines is a mature technology in the prior art, and will not be elaborated upon in this invention.

[0063] like Figure 3 As shown, the cable chain unit coating line includes a horizontal spray coating conveyor line, a flip panel 1a, and a flipping component. The horizontal spray coating conveyor line includes a front conveyor line 2a and a rear conveyor line 3a that are connected to each other. The flip panel 1a is located at the junction of the front conveyor line 2a and the rear conveyor line 3a and is above the rear conveyor line 3a. The height of the front conveyor line 2a is higher than that of the rear conveyor line 3a (the front conveyor line 2a and the rear conveyor line 3a form a stepped structure. Without the presence of the flip panel 1a, the cable chain material conveyed from the front conveyor line 2a would fall from the higher position onto the lower position of the rear conveyor line 3a). In its initial state, the flip panel 1a is located at the same height as the front conveyor line 2a and is tightly connected to the front conveyor line 2a (it must be tightly connected because the flip panel 1a itself does not have conveying capacity, so the material on the flip panel 1a is gradually delivered from the front conveyor line 2a. If there is a gap, the bottom of the cable chain can easily get stuck in the gap, causing material jamming. Also, this does not mean a very small gap). No, because there will still be a slight gap between the components. However, this gap is so small that it will not interfere with the conveying efficiency. Therefore, the gap mentioned here refers to a gap that will interfere with the conveying process. The flipping component is used to lift the flipping panel 1a and rotate it 180 degrees before lowering it back to the initial position. (The reason why the flipping panel 1a needs to be lifted is that the flipping panel 1a and the front conveyor line 2a need to fit tightly together. Therefore, there is no margin at their contact edges. The flipping panel 1a will be stuck by the edge of the front conveyor line 2a and cannot be flipped directly. Therefore, it needs to be lifted first. Leaving margin means, for example, making it into an arc shape to complete the direct flipping function. However, if an arc shape is formed, a gap will inevitably be created. Therefore, it is said that no margin can be left.) After receiving the cable chain workpiece from the front conveyor line 2a, the flipping panel 1a rotates 180 degrees and then throws the cable chain workpiece down onto the rear conveyor line 3a. The front and back of the flipping panel 1a are equipped with fixing components for fixing and releasing the cable chain.

[0064] A horizontal conveyor line for spray coating is simply a conveyor line. The function of a conveyor line is to transport workpieces from one end to the other. It is a very mature technology in the existing technology, so this invention will not elaborate on it.

[0065] The core challenge to be solved in the cable chain unit coating line is to systematically complete the lifting, flipping, and lowering of the flip panel 1a in sequence. Generally speaking, this work requires at least one lifting system and one flipping system. However, since the flip panel 1a has a fixed motion flow in this invention, it is feasible to combine the lifting system and the flipping system into a single working system, which can also save the investment of equipping a separate system.

[0066] The following is a structural description of the flipping component. Figures 4 to 16 These are all structural diagrams illustrating the flipping component. For ease of observation, the flipping panel 1a, which should be fixed to the flipping component, is hidden in the diagrams. The front end of the main shaft 13a is marked with "+" and "-" symbols, respectively. "+" indicates the front side of the flipping panel 1a after it is assembled with the main shaft 13a, and "-" indicates the back side of the flipping panel 1a after it is assembled with the main shaft 13a. Figures 4 to 16 It is done sequentially, when Figure 16 After it ends, you will return to Figure 4 The initial state shown is used as a loop.

[0067] The flipping component includes: a base 5a fixedly installed with a horizontal slide rail 4a, a translation block 6a movably installed in the horizontal slide rail 4a, a lifting slide rail 7a fixedly installed vertically, a movable block 8a slidably installed on the lifting slide rail 7a, and a CNC drive assembly fixedly installed for driving the movable block 8a to perform lifting and lowering movements on the lifting slide rail 7a.

[0068] In this description, the horizontal direction represents the X-axis direction, the vertical direction represents the Y-axis direction, and the vertical axis represents the Z-axis direction.

[0069] The base 5a and the lifting slide rail 7a are offset in the longitudinal direction;

[0070] A triangular block 9a with an isosceles triangular longitudinal section is fixedly installed above the center of the translation block 6a. Two uprights 10a are symmetrically fixed on both sides of the translation block 6a. A truss 11a is horizontally fixed at the top of the uprights 10a. The two trusses 11a are symmetrically arranged and form a gap 12a between them.

[0071] A shaft hole is longitudinally drilled through the center of the movable block 8a. A main shaft 13a is rotatably mounted inside the shaft hole, passing through the shaft hole. The front end of the main shaft 13a faces the translation block 6a and is used to fix the flip panel 1a. A flipping disk 14a is fixedly fitted in the middle of the front end of the main shaft 13a. Two flipping rods 15a are longitudinally and symmetrically fixed on the flipping disk 14a with the flip panel 1a as the center plane. A magnetic rod 16a with magnetism is fixed to the tail end of the main shaft 13a. The magnetic rod 16a and the flipping disk 14a are located in the same plane. The magnetic rod 16a is positioned on the side opposite to the two flipping rods 15a. The back of the movable block 8a is also symmetrically fixed with two magnets 17a with magnetic adsorption function. When the magnetic rod 16a approaches any one of the magnets 17a, it will be immediately attracted to the contact position. When the magnetic rod 16a is in contact with the two magnets 17a respectively, the flipping disk 14a is in two states: forward horizontal and reverse horizontal. At this time, the two flipping rods 15a are collinear (in fact, the magnetic rod 16a is on the same straight line when it is in contact with the two magnets 17a respectively).

[0072] Except for the magnetic rod 16a and the magnet 17a, other close parts should be made of insulating materials to avoid interference.

[0073] When the magnetic rod 16a is in contact with the magnet 17a, the bottom flipping rod 15a, along with the movable block 8a, descends and presses the triangular block 9a, causing the translation block 6a to move and change the position of the truss 11a and the notch 12a. The top flipping rod 15a, along with the movable block 8a, rises and, under the obstruction of the truss 11a, causes the main shaft 13a to flip. During the flipping of the main shaft 13a, another flipping rod 15a flips through the notch 12a. When the main shaft 13a flips at an angle exceeding 90 degrees, the magnetic rod 16a will move closer to the other magnet 17a and be instantly attracted by the magnet 17a to complete the 180-degree flipping function.

[0074] After explaining the structure of the flipping component, combined with Figures 4 to 16 Returning to Figure 4 Let me explain in detail the operating principle of the flipping component:

[0075] Figure 4 In the initial state (the initial state is when the "+" plane of the flip panel 1a aligns with the front conveyor line 2a, allowing for material lifting), the "+" is on top and the "-" is on the bottom. Then, the movable block 8a moves upward until the flipping rod 15a on the "+" side contacts the left truss 11a. Figure 5 As shown, the movable block 8a then continues to move upward. Because the left truss 11a obstructs the flipping rod 15a on the "+" side, the flipping rod 15a on the "+" side will be passively flipped, which causes the main shaft 13a to begin to rotate, as shown. Figure 6As shown, during the reversing process of the main shaft 13a, the flipping rod 15a on the "-" side will pass through the notch 12a, as... Figure 7 As shown, when the main shaft 13a rotates more than 90 degrees, the magnetic rod 16a will move from a position closer to the first magnet 17a to a position closer to the second magnet 17a, as... Figure 8 As shown, at this moment, without any external force interfering with the attraction of the second magnet 17a to the magnetic rod 16a, the second magnet 17a will immediately attract the magnetic rod 16a, allowing the main shaft 13a to instantly complete the 90-degree to 180-degree flipping function, as shown. Figure 9 and Figure 10 As shown, at this time, both tilting levers 15a are vertically positioned within the notch 12a and will not be disturbed, thus lowering the movable block 8a to the position shown. Figure 11 In this situation, as the moving block 8a continues to descend, the flipping lever 15a on the "+" side will press against the triangular block 9a, combined with... Figure 10 It can be seen that the triangular block 9a exerts a squeezing force on the flipping rod 15a on the "+" side at this time, which has the effect of making... Figure 10 The main shaft 13a tends to rotate clockwise, but because the second magnet 17a blocks the magnetic rod 16a, the main shaft 13a is very stable at this time, which will push the triangular block 9a to the left. Figure 12 As shown (in this state, the "-" plane of the flip panel 1a aligns with the front conveyor line 2a, allowing for material lifting), the leftward movement of the triangular block 9a is actually to adjust the position of the notch 12a and the right truss, moving the right truss to a position directly above the two flipping rods 15a. Then, the notch 12a also moves to the left so that during the next flipping process, the flipping rod 15a on the "+" side can pass through the notch 12a without colliding with the left truss 11a. Then, the movable block 8a moves upward again until the flipping rod 15a on the "-" side contacts the right truss 11a, as shown. Figure 13 As shown, similarly, the flipping rod 15a on the "-" side will be blocked by the right-side truss 11a, and then it will flip in the opposite direction. Figure 14 Similarly, when the spindle 13a rotates more than 90 degrees, the first magnet 17a will immediately attract the magnetic rod 16a, thus instantly completing the 90-degree to 180-degree rotation function. Figure 15 As shown, the moving block 8a then descends again until it touches the other hypotenuse of the triangular block 9a, as... Figure 16 As shown, after squeezing and moving triangle 9a to the right, it returns to its original position. Figure 4 The initial state is now complete, thus completing one cycle.

[0076] Although this cycle process seems long, it can actually complete two material lifting and flipping functions in one cycle. This is because the flipping panel 1a can complete the material lifting function as long as it is connected to the front-end conveyor line 2a, regardless of whether the "+" direction is upward or the "-" direction is downward. Then, after being raised, the flipping effect will be completed.

[0077] Two collars are fixedly provided on the main spindle 13a, and the two collars are respectively attached to the front and rear end faces of the movable block 8a (so that the main spindle 13a will not detach from the shaft hole).

[0078] The CNC drive assembly includes a CNC motor and a lead screw. The movable block 8a has a vertically opened threaded hole that matches the lead screw. The threaded hole is connected to the lead screw, and the CNC motor is used to drive the lead screw to rotate.

[0079] The fixing components use hooks to hook the cable chain workpiece, or mechanical jaws to hold the cable chain workpiece, or they can use the principle of adsorption.

[0080] It should be understood that in the claims and description of this invention, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0081] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A manufacturing process for a polytetrafluoroethylene (PTFE) sleeve and matching drag chain for dustproof cables, characterized in that, Includes the following steps: Step 1: The unit tubes made of polytetrafluoroethylene are placed on the unit tube coating process line for forward conveying. The unit tube coating process line conveys the unit tubes to be coated to the first spraying station. The first spraying device completes the spraying work on the upper half of the unit tube. Then the unit tube continues to be conveyed forward and rotated to switch the lower half to the upper half. Then it enters the second spraying station, where the second spraying device completes the spraying work on the lower half of the unit tube. The unit tube is sent out of the unit tube coating process line and dried by drying equipment or air drying. After the compound sprayed on the surface of the unit tube dries, it forms a protective layer. Step 2: The cable chain unit is fed into the cable chain unit coating process line. The cable chain unit coating process line transports the cable chain unit to be coated to the third spraying station. The third spraying device completes the spraying work on the outer surfaces of the cable chain unit except for the bottom surface. Then the cable chain unit continues to move forward and rotates 180° to switch the bottom surface to the top. Then it enters the fourth spraying station. The fourth spraying device completes the spraying work on the bottom surface of the cable chain unit. The cable chain unit is sent out of the cable chain unit coating process line and dried by drying equipment or air drying. After the compound sprayed on the surface of the cable chain unit dries, it forms a protective layer. The unit tube coating process line includes a first conveyor line and a second conveyor line fixed at an inclination, as well as an inclined tumbling and reversing component. After being conveyed to the tail end by the first conveyor line, the unit tube first enters the tumbling and reversing component to complete the tumbling operation, and then enters the second conveyor line for continued conveying. The tube opening faces the same direction of travel of the first and second conveyor lines. The unit tube fed into the tumbling and reversing component from the first conveyor line is pushed into the tumbling and reversing component by the squeezing force provided by the continuous travel of the unit tube at its rear end. The first and second conveyor lines are staggered in the conveying direction. The tumbling reversing component includes a support body, a movable plate, a material clamping plate, and a receiving plate, a feeding plate, and a CNC pushing cylinder fixed on the support body; The support frame is fixedly installed, and the material clamping plate is raised and lowered on the support frame via a lifting rod. The receiving plate and the feeding plate are arranged on the same side and staggered from each other. The receiving plate is placed at the tail end of the first conveyor line and the feeding plate is placed at the head end of the second conveyor line. The clamping plate is located at the junction of the receiving plate and the feeding plate, and is used to prevent the unit tubes on the receiving plate from rolling onto the feeding plate; A fixed block is provided at the end of the receiving plate away from the first conveyor line. A through hole is provided on the fixed block. A movable rod is slidably provided in the through hole. The end of the movable rod is fixed to the movable plate. A spring is also sleeved on the movable rod. The two ends of the spring are fixed to the movable plate and the fixed block, respectively. The receiving plate is also equipped with a first gear and a second gear that mesh with each other. The side of the movable plate is fixed with a horizontal rack, and the end face of the clamping plate is fixed with a vertical rack. The horizontal rack meshes with the first gear, and the vertical rack meshes with the second gear. After the movable plate moves toward the fixed block, the clamping plate is lowered synchronously through the horizontal rack, the first gear, the second gear, and the vertical rack in sequence. The lowering of the clamping plate realizes the clearance function so that the unit tube on the receiving plate rolls onto the feeding plate under the inclined gravitational potential energy. The feeding plate is equipped with a baffle plate, which is used to block the unit tubes rolling over from the clamping plate; The piston rod end of the CNC pusher cylinder is equipped with a pusher plate, which can push the unit tube on the feeding plate into the second conveyor line.

2. The manufacturing process of a polytetrafluoroethylene sleeve and matching drag chain for dustproof cables according to claim 1, characterized in that: The unit tube rotates at an angle of 90 degrees to 270 degrees as it rolls from the receiving plate to the rolling feed plate.

3. The manufacturing process of a polytetrafluoroethylene sleeve and matching drag chain for dustproof cables according to claim 1, characterized in that: The first and second conveyor lines are the same type of conveying device, which includes a conveyor frame, conveyor wheels, a conveyor belt, and a conveying drive component. The conveyor frame is also equipped with a stop bar, which is located beside the path of the conveyor belt.

4. The manufacturing process of a polytetrafluoroethylene sleeve and matching drag chain for dustproof cables according to claim 1, characterized in that: The aforementioned cable chain unit coating process line includes a horizontal spray coating conveyor line, a flip panel, and a flipping component. The horizontal spray coating conveyor line includes a front-end conveyor line and a rear-end conveyor line that are connected to each other. The flip panel is located at the junction of the front-end conveyor line and the rear-end conveyor line and is above the rear-end conveyor line. The height of the front-end conveyor line is higher than that of the rear-end conveyor line. In its initial state, the flip panel is located at the same height as the front-end conveyor line and is tightly connected to it. The flipping component is used to lift the flip panel and rotate it 180 degrees before lowering it back to its initial position. After receiving the cable chain workpiece from the front-end conveyor line, the flip panel rotates 180 degrees and then throws the cable chain workpiece down onto the rear-end conveyor line. The front and back sides of the flip panel are provided with fixing components for fixing and releasing the cable chain.

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