Vacuum expansion device for heat shrink tube

Abstract

The utility model discloses a vacuum expansion device for a heat shrink tube, and relates to the technical field of heat shrink tubes. The device comprises a workbench, a rolling wheel is fixedly connected to the top of the workbench, two guide assemblies are symmetrically installed on the top of the workbench, a heating box is fixedly connected to the top of the workbench, and a negative pressure vacuum expansion cylinder is fixedly connected to the top of the workbench. The circulating assembly is arranged, after vacuum expansion of the heat shrink tube is finished, the heat shrink tube enters the cooling box through guiding of a second guiding pipe, at the moment, cooling water is sprayed to the heat shrink tube in the second guiding pipe by starting a spray head, and then the cooling water carrying heat enters the water storage tank again; through mutual cooperation of honeycomb holes, a partition plate and a cooling fan, cooling water carrying heat can be rapidly cooled and waits for subsequent extraction and spraying again, so that the device forms a complete cooling water circulation system, and the cooling effect of the heat shrink tube is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat shrink tubes, and in particular to a heat shrink tube vacuum expansion device. Background Art

[0002] Heat shrink tubing vacuum expansion is a method of expanding heat shrink tubing. During the vacuum expansion process, the expanded tube is first heated to a certain temperature in a heating furnace, and then enters the expansion sizing device. At this time, the inside of the expanded tube is at normal pressure, while the outside is at negative pressure. The pressure difference between the inside and outside causes the expanded tube to expand, and then it is cooled and shaped.

[0003] In the existing heat shrink tube vacuum expansion device, the heat shrink tube needs to be cooled and shaped after the expansion is completed. Currently, the most common cooling method is water cooling. A nozzle is set above the heat shrink tube to continuously spray cooling water to reduce the axial shrinkage rate of the heat shrink tube.

[0004] However, during actual use, the sprayed cooling water will absorb the heat from the heat shrink tube, and then gather in the water collecting tank waiting for the next extraction and recycling. However, the cooling water carrying the heat cannot be quickly cooled down in the water collecting tank at this time, and will always be in a high temperature state. As a result, the cooling effect on the heat shrink tube is greatly reduced during subsequent recycling, affecting the vacuum expansion effect of the heat shrink tube. For this reason, the present application provides a heat shrink tube vacuum expansion device. Utility Model Content

[0005] The purpose of the present application is to solve the problem that the cooling water carrying heat cannot be cooled down quickly in the water collecting tank and will always be in a high temperature state, resulting in a greatly reduced cooling effect on the heat shrinkable tube during subsequent recycling, thereby affecting the vacuum expansion effect of the heat shrinkable tube. The present application provides a heat shrinkable tube vacuum expansion device.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A heat shrink tube vacuum expansion device comprises a workbench, a reel is fixedly connected to the top of the workbench, two guide assemblies are symmetrically installed on the top of the workbench, a heating box is fixedly connected to the top of the workbench, a negative pressure vacuum expansion tube is fixedly connected to the top of the workbench, one end of the negative pressure vacuum expansion tube is fixedly connected to guide tube 1, the guide tube 1 is passed through and fixedly connected in the heating box, the other end of the negative pressure vacuum expansion tube is fixedly connected to guide tube 2, the top of the workbench is fixedly connected to a cooling box, the guide tube 2 is passed through and fixedly connected in the cooling box, and circulation assemblies are installed on both sides of the cooling box.

[0008] By adopting the above technical solution, one end of the heat shrink tube is inserted into the interior of the guide tube one through the guide component. The operation of the guide component can drive the heat shrink tube to move forward continuously, thereby realizing automatic loading of the heat shrink tube. The heat shrink tube is then heated by the heating box, and the heated heat shrink tube enters the interior of the negative pressure vacuum expansion tube. At this time, by starting the operation of the negative pressure vacuum expansion tube, the interior of the heat shrink tube is at normal pressure, while the exterior is at negative pressure. The pressure difference between the inside and the outside causes the heat shrink tube to expand, thereby ensuring that the heat shrink tube reaches a predetermined size and shape, and improving the uniformity and precision of the product. When the vacuum expansion of the heat shrink tube is completed, it will enter the interior of the cooling box through the guidance of the guide tube two. At this time, by starting the circulation component, the surface of the heat shrink tube is sprayed with coolant for water cooling. At the same time, the sprayed coolant can be collected and cooled by the circulation component, and then extracted and sprayed again, so that the device forms a complete cooling water circulation system, which greatly improves the cooling effect of the heat shrink tube.

[0009] Furthermore, the guide assembly includes two fixed frames symmetrically fixedly connected to the top of the workbench, through holes are opened on both sides of the two fixed frames, a bidirectional screw rod is rotatably connected to the inside of one of the through holes, a handle is fixedly connected to the top of the bidirectional screw rod, two threaded sleeves are symmetrically threadedly connected to the bidirectional screw rod, one side of the two threaded sleeves are rotatably connected to rollers, and two connecting blocks are symmetrically and slidably connected to the inside of the other through hole, one end of the two rollers are rotatably connected to one side of the two connecting blocks, one side of one of the connecting blocks is fixedly connected to motor 1, and the output end of motor 1 is fixedly connected to one end of the roller.

[0010] By adopting the above technical solution, when the bidirectional screw rotates, the two threaded sleeves on the bidirectional screw will be driven to gradually approach each other, thereby driving the two rollers to clamp and fix the heat shrink tube. At this time, the motor can be started to drive the rollers to rotate. The rotating rollers can drive the heat shrink tube to move forward, thereby realizing automatic loading of the heat shrink tube.

[0011] Furthermore, both sides of the through hole are provided with sliding grooves, and both sides of the two connecting blocks are fixedly connected with sliding blocks, and the sliding blocks are slidably connected in the sliding grooves.

[0012] By adopting the above technical solution, when the bidirectional screw rod rotates, the two rollers will be driven to gradually approach together along the guidance of the slide groove and the slider.

[0013] Furthermore, the outer walls of the two rollers are fixedly connected with anti-slip pads.

[0014] By adopting the above technical solution, the friction between the roller and the heat shrink tube can be improved by the anti-skid pad, thereby reducing the possibility of slipping during automatic feeding.

[0015] Furthermore, an electric heating resistance wire is fixedly connected to the inner bottom surface of the heating box.

[0016] By adopting the above technical solution, the electric heating resistor wire is started to heat the inside of the heating box, so that the molecular thermal motion of the heat shrink tube is accelerated at high temperature and the molecular distance is reduced, so that the heat shrink tube has the characteristics of reduced diameter and increased length.

[0017] Furthermore, the circulation component includes a water storage tank fixedly connected to both sides of the cooling box, connecting pipes are opened through both sides of the cooling box, a fixed block is symmetrically fixedly connected to the top of the cooling box, a plurality of nozzles are fixedly connected to one side of the fixed block, one end of the fixed block is fixedly connected to a pump, the output end of the pump is fixedly connected to a water pumping pipe, and the other end of the water pumping pipe is fixedly connected to one side of the water storage tank.

[0018] By adopting the above technical solution, the pump is started to pump the cooling water inside the water tank to the inside of the fixed block through the pumping pipe, and then the nozzle is started to spray the cooling water onto the heat shrink tube inside the guide tube 2 to cool the heat shrink tube.

[0019] Furthermore, a PVC filler is fixedly connected to the interior of the water tank, a plurality of honeycomb holes are opened inside the PVC filler, a partition plate is fixedly connected to the interior of the water tank, a flow guide pipe is opened through the partition plate, and an insulation board is fixedly connected to the interior of the flow guide pipe.

[0020] By adopting the above technical solution, the cooling water carrying heat will first fall on the PVC filler to form a water film, and at the same time exchange heat with the air inside the water tank to evaporate into the air to take away the heat of the cooling water. The honeycomb holes can increase the flow rate of the cooling water on the cooling surface, so that more heat can be dissipated quickly, and the cooling water that falls on the partition plate will fall to the bottom of the water tank through the guidance of the guide pipe.

[0021] Furthermore, a support block is fixedly connected to the top of the water tank, a second motor is fixedly connected to the top of the support block, and a cooling fan is fixedly connected to the output end of the second motor.

[0022] By adopting the above technical solution, the steam inside the water tank can be discharged to the outside by starting the second motor to drive the cooling fan to operate.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. The present application is provided with a circulation component. When the vacuum expansion of the heat shrinkable tube is completed, it will enter the interior of the cooling box through the guidance of the guide tube 2. At this time, the cooling water is sprayed onto the heat shrinkable tube inside the guide tube 2 by starting the nozzle. Then the cooling water carrying the heat will re-enter the water storage tank. Through the cooperation of the honeycomb holes, the partition plates and the cooling fan, the cooling water carrying the heat can be quickly cooled down, waiting for the subsequent extraction and spraying, so that the device forms a complete cooling water circulation system, which greatly improves the cooling effect of the heat shrinkable tube.

[0025] 2. The present application is provided with a guiding assembly, which drives the through hole to rotate by turning the handle, so that the two rollers clamp and fix the heat shrink tube. At this time, the motor is started to drive the rollers to rotate, and the heat shrink tube is driven forward, thereby realizing automatic loading of the heat shrink tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body in this application.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the guide component in this application.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure inside the heating box in this application.

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the circulation component in this application.

[0030] Description of reference numerals:

[0031] 1. Workbench; 2. Reel; 3. Guide assembly; 4. Heating box; 41. Electric heating resistance wire; 5. Negative pressure vacuum expansion cylinder; 6. Guide tube 1; 7. Guide tube 2; 8. Cooling box; 9. Circulation assembly; 31. Fixed frame; 32. Through hole; 33. Bidirectional screw rod; 34. Handle; 35. Threaded sleeve; 36. Roller; 37. Connecting block; 38. Motor 1; 39. Slide; 310. Sliding block; 311. Anti-slip mat; 91. Water tank; 92. Connecting pipe; 93. Fixed block; 94. Nozzle; 95. Pump; 96. Suction pipe; 97. PVC filler; 98. Honeycomb hole; 99. Partition plate; 910. Guide pipe; 911. Heat insulation board; 912. Support block; 913. Motor 2; 914. Cooling fan. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a heat shrink tube vacuum expansion device.

[0034] Reference Figure 1and Figure 3 A heat shrink tube vacuum expansion device comprises a workbench 1, a reel 2 is fixedly connected to the top of the workbench 1, two guide assemblies 3 are symmetrically installed on the top of the workbench 1, a heating box 4 is fixedly connected to the top of the workbench 1, a negative pressure vacuum expansion tube 5 is fixedly connected to the top of the workbench 1, one end of the negative pressure vacuum expansion tube 5 is fixedly connected to a guide tube 1 6, the guide tube 1 6 is passed through and fixedly connected in the heating box 4, the other end of the negative pressure vacuum expansion tube 5 is fixedly connected to a guide tube 2 7, a cooling box 8 is fixedly connected to the top of the workbench 1, the guide tube 2 7 is passed through and fixedly connected in the cooling box 8, circulation assemblies 9 are installed on both sides of the cooling box 8, and an electric heating resistor wire 41 is fixedly connected to the inner bottom surface of the heating box 4.

[0035] When in use, first wind the heat shrink tube on the reel 2, then pass one end of the heat shrink tube through the guide component 3 and insert it into the interior of the guide tube 6. At this time, start the guide component 3 to clamp the heat shrink tube. The operation of the guide component 3 can drive the heat shrink tube to move forward continuously, so as to realize the automatic loading of the heat shrink tube. When the heat shrink tube enters the interior of the heating box 4 under the guidance of the guide tube 6, the electric heating resistor 41 can be started to heat the interior of the heating box 4, so that the molecular thermal motion of the heat shrink tube is accelerated at high temperature, and the molecular distance is reduced, so that the heat shrink tube has the characteristics of reduced diameter and increased length. Then the heated heat shrink tube will enter the interior of the negative pressure vacuum expansion tube 5. At this time, by starting the negative pressure vacuum expansion The operation of cylinder 5 makes the inside of the heat shrink tube at normal pressure and the outside at negative pressure. The pressure difference between the inside and the outside causes the heat shrink tube to expand, thereby ensuring that the heat shrink tube reaches the predetermined size and shape, improving the uniformity and precision of the product, and by accurately controlling the expansion process, problems such as uneven wall thickness and dimensional deviation can be reduced, thereby improving the overall quality of the product. After the vacuum expansion of the heat shrink tube is completed, it will enter the interior of the cooling box 8 through the guidance of the guide tube 2 7. At this time, the circulation component 9 is started to spray the coolant on the surface of the heat shrink tube for water cooling. At the same time, the sprayed coolant can be collected and cooled through the circulation component 9, and then extracted and sprayed again, so that the device forms a complete cooling water circulation system, which greatly improves the cooling effect of the heat shrink tube.

[0036] Reference Figure 1 and Figure 2The guide assembly 3 includes two fixed frames 31 symmetrically fixedly connected to the top of the workbench 1, through holes 32 are provided on both sides of the two fixed frames 31, a bidirectional screw rod 33 is rotatably connected to the inside of one of the through holes 32, a handle 34 is fixedly connected to the top of the bidirectional screw rod 33, two threaded sleeves 35 are symmetrically threadedly connected to the bidirectional screw rod 33, one side of the two threaded sleeves 35 are rotatably connected to a roller 36, and two connecting blocks 37 are symmetrically slidably connected inside the other through hole 32, one end of the two rollers 36 is rotatably connected to one side of the two connecting blocks 37, one side of one of the connecting blocks 37 is fixedly connected to a motor 38, and the output end of the motor 38 is fixedly connected to one end of the roller 36, and sliding grooves 39 are provided on both sides of the through hole 32, and sliders 310 are fixedly connected to both sides of the two connecting blocks 37, and the sliders 310 are slidably connected in the sliding grooves 39, and the outer walls of the two rollers 36 are fixedly connected to anti-slip pads 311.

[0037] When in use, first turn the handle 34 to drive the through hole 32 to rotate. When the bidirectional screw rod 33 rotates, the two threaded sleeves 35 will be driven to gradually approach each other on the bidirectional screw rod 33, thereby driving the two rollers 36 to gradually approach each other along the guidance of the slide groove 39 and the slider 310, until the two rollers 36 clamp and fix the heat shrink tube and then stop moving. At this time, the motor 38 can be started to drive the roller 36 to rotate. The rotating roller 36 can drive the heat shrink tube to move forward, thereby realizing automatic loading of the heat shrink tube. At the same time, the anti-slip pad 311 can increase the friction between the roller 36 and the heat shrink tube, thereby reducing the possibility of slipping during automatic loading.

[0038] Reference Figure 1 and Figure 4 The circulation component 9 includes a water tank 91 fixedly connected to both sides of the cooling box 8, connecting pipes 92 are opened through both sides of the cooling box 8, a fixed block 93 is symmetrically fixedly connected to the top of the cooling box 8, a plurality of nozzles 94 are fixedly connected to one side of the fixed block 93, a pump 95 is fixedly connected to one end of the fixed block 93, a pumping pipe 96 is fixedly connected to the output end of the pump 95, and the other end of the pumping pipe 96 is fixedly connected to one side of the water tank 91, a PVC filler 97 is fixedly connected to the inside of the water tank 91, a plurality of honeycomb holes 98 are opened inside the PVC filler 97, a partition plate 99 is fixedly connected to the inside of the water tank 91, a guide pipe 910 is opened through the partition plate 99, and a heat insulation board 911 is fixedly connected to the inside of the guide pipe 910, a support block 912 is fixedly connected to the top of the water tank 91, a motor 2 913 is fixedly connected to the top of the support block 912, and a cooling fan 914 is fixedly connected to the output end of the motor 2 913.

[0039] When in use, first start the pump 95 to pump the cooling water in the water tank 91 to the inside of the fixed block 93 through the pumping pipe 96, then start the nozzle 94 to spray the cooling water onto the heat shrink tube inside the guide tube 7. The sprayed cooling water will fall into the inside of the cooling box 8 due to the influence of gravity, and then re-enter the inside of the water tank 91 through the guidance of the connecting pipe 92. At this time, the cooling water carrying heat will first fall on the PVC filler 97 to form a water film, and at the same time, it will exchange heat with the air inside the water tank 91 and evaporate into the air to take away the heat of the cooling water. Then, the cooling water will fall on the partition plate through the guidance of the honeycomb hole 98. 99, the honeycomb holes 98 can increase the flow rate of cooling water on the cooling surface, so that more heat can be dissipated quickly, and the cooling water falling on the partition plate 99 will be guided by the guide pipe 910 and fall to the bottom of the water tank 91, waiting to be extracted by the subsequent nozzle 94, so that the device forms a complete cooling water circulation system, which greatly improves the cooling effect of the heat shrink tube. The heat insulation board 911 inside the partition plate 99 can isolate the heat and reduce the possibility of entering the bottom of the water tank 91. Secondly, by starting the motor 2 913 to drive the cooling fan 914 to operate, the steam inside the water tank 91 can be discharged to the outside.

[0040] The implementation principle of the heat shrink tube vacuum expansion device of the present embodiment is as follows: when in use, firstly wind the heat shrink tube on the reel 2, then insert one end of the heat shrink tube through the guide assembly 3 into the interior of the guide tube 6, at this time, turn the handle 34 to drive the through hole 32 to rotate, when the bidirectional screw rod 33 rotates, it will drive the two threaded sleeves 35 to gradually approach on the bidirectional screw rod 33, thereby driving the two rollers 36 to gradually approach along with the guidance of the slide groove 39 and the slider 310, until the two rollers 36 clamp and fix the heat shrink tube and stop moving, at this time, the motor 38 can be started to drive the roller 36 to rotate, and the rotating roller 36 can drive the heat shrink tube to move forward, thereby realizing the automatic feeding of the heat shrink tube, and at the same time, the anti-skid pad 311 can improve the friction between the roller 36 and the heat shrink tube, reducing the possibility of slipping during automatic feeding;

[0041] Subsequently, when the heat shrink tube enters the interior of the heating box 4 under the guidance of the guide tube 6, the electric heating resistor 41 can be started to heat the interior of the heating box 4, so that the molecular thermal motion of the heat shrink tube is accelerated at high temperature, and the molecular distance is reduced, so that the heat shrink tube has the characteristics of reduced diameter and increased length. Subsequently, the heated heat shrink tube will enter the interior of the negative pressure vacuum expansion tube 5. At this time, by starting the operation of the negative pressure vacuum expansion tube 5, the interior of the heat shrink tube is at normal pressure, while the exterior is at negative pressure. The pressure difference between the inside and the outside causes the heat shrink tube to expand, thereby ensuring that the heat shrink tube reaches a predetermined size and shape, improving the uniformity and precision of the product, and reducing problems such as uneven wall thickness and dimensional deviation by accurately controlling the expansion process, thereby improving the overall quality of the product.

[0042] Secondly, when the vacuum expansion of the heat shrink tube is completed, it will enter the interior of the cooling box 8 through the guidance of the guide tube 2 7. At this time, by starting the pump 95, the cooling water inside the water tank 91 is pumped to the interior of the fixed block 93 through the pumping pipe 96, and then the nozzle 94 is started to spray the cooling water onto the heat shrink tube inside the guide tube 2 7. The sprayed cooling water will fall into the interior of the cooling box 8 due to the influence of gravity, and then re-enter the interior of the water tank 91 through the guidance of the connecting pipe 92. At this time, the cooling water carrying heat will first fall on the PVC filler 97 to form a water film, and at the same time perform heat exchange with the air inside the water tank 91 to evaporate into the air to take away the heat of the cooling water, and then cool down. Water is guided by the honeycomb holes 98 and falls on the partition plate 99. The honeycomb holes 98 can increase the flow rate of cooling water on the cooling surface, so that more heat can be dissipated quickly. The cooling water falling on the partition plate 99 will be guided by the guide pipe 910 and fall to the bottom of the water tank 91, waiting to be extracted by the subsequent nozzle 94, so that the device forms a complete cooling water circulation system, which greatly improves the cooling effect of the heat shrink tube. The heat insulation board 911 inside the partition plate 99 can isolate the heat and reduce the possibility of entering the bottom of the water tank 91. Secondly, by starting the second motor 913 to drive the cooling fan 914 to operate, the steam inside the water tank 91 can be discharged to the outside.

Claims

1. A heat shrink tube vacuum expansion device, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a reel (2), the top of the workbench (1) is symmetrically equipped with two guide assemblies (3), the top of the workbench (1) is fixedly connected to a heating box (4), the top of the workbench (1) is fixedly connected to a negative pressure vacuum expansion cylinder (5), one end of the negative pressure vacuum expansion cylinder (5) is fixedly connected to a guide tube 1 (6), the guide tube 1 (6) is passed through and fixedly connected in the heating box (4), the other end of the negative pressure vacuum expansion cylinder (5) is fixedly connected to a guide tube 2 (7), the top of the workbench (1) is fixedly connected to a cooling box (8), the guide tube 2 (7) is passed through and fixedly connected in the cooling box (8), and circulation assemblies (9) are installed on both sides of the cooling box (8).

2. A heat shrink tube vacuum expansion device according to claim 1, characterized in that: The guide assembly (3) comprises two fixing frames (31) symmetrically fixedly connected to the top of the workbench (1), through holes (32) being provided on both sides of the two fixing frames (31), a bidirectional screw rod (33) being rotatably connected thereto through one of the through holes (32), a handle (34) being fixedly connected to the top of the bidirectional screw rod (33), two threaded sleeves (35) being symmetrically threadedly connected to the bidirectional screw rod (33), one side of each of the two threaded sleeves (35) being rotatably connected to a roller (36), and two connecting blocks (37) being symmetrically slidably connected thereto in the other through hole (32), one end of each of the two rollers (36) being rotatably connected to one side of the two connecting blocks (37), one side of each of the connecting blocks (37) being fixedly connected to a motor 1 (38), and an output end of the motor 1 (38) being fixedly connected to one end of the roller (36).

3. A heat shrink tube vacuum expansion device according to claim 2, characterized in that: Slide grooves (39) are provided on both sides of the through hole (32), and sliders (310) are fixedly connected to both sides of the two connecting blocks (37), and the sliders (310) are slidably connected in the slide grooves (39).

4. A heat shrink tube vacuum expansion device according to claim 2, characterized in that: The outer walls of the two rollers (36) are both fixedly connected with anti-slip pads (311).

5. A heat shrink tube vacuum expansion device according to claim 1, characterized in that: An electric heating resistance wire (41) is fixedly connected to the inner bottom surface of the heating box (4).

6. A heat shrink tube vacuum expansion device according to claim 1, characterized in that: The circulation component (9) comprises a water storage tank (91) fixedly connected to both sides of a cooling box (8), connecting pipes (92) are provided through both sides of the cooling box (8), a fixing block (93) is symmetrically fixedly connected to the top of the cooling box (8), a plurality of nozzles (94) are fixedly connected to one side of the fixing block (93), a pump (95) is fixedly connected to one end of the fixing block (93), a pumping pipe (96) is fixedly connected to the output end of the pump (95), and the other end of the pumping pipe (96) is fixedly connected to one side of the water storage tank (91).

7. A heat shrink tube vacuum expansion device according to claim 6, characterized in that: A PVC filler (97) is fixedly connected to the interior of the water storage tank (91), a plurality of honeycomb holes (98) are provided in the interior of the PVC filler (97), a partition plate (99) is fixedly connected to the interior of the water storage tank (91), a flow guide tube (910) is provided through the partition plate (99), and a heat insulation board (911) is fixedly connected to the interior of the flow guide tube (910).

8. A heat shrink tube vacuum expansion device according to claim 6, characterized in that: The top of the water storage tank (91) is fixedly connected to a support block (912), the top of the support block (912) is fixedly connected to a second motor (913), and the output end of the second motor (913) is fixedly connected to a cooling fan (914).

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