Heat shrink tube processing equipment

Abstract

The present invention discloses a heat shrink tube processing device, comprising a base, a guide rail, a first slider, a second slider and a heater; the heater and the guide rail are both arranged on the top surface of the base, the first slider and the second slider are slidably connected with the guide rail, the first slider is provided with a first chuck, and the second slider is provided with a second chuck; the first chuck and the second chuck are used to clamp the heat shrink tube; the heater is located between the first slider and the second slider, and the heater is provided with a first through hole for the heat shrink tube to pass through. In the heat shrink tube processing device, the heat shrink tube will not contact the heater to avoid scratching and contaminating the heat shrink tube, and the heater has a simple structure and is easy to install and disassemble.

Description

Technical Field

[0001] The invention relates to pipe processing equipment, in particular to heat shrink tube processing equipment. Background Art

[0002] Heat shrink tubing has been widely used in various fields, such as: power communication industry; coating of transmission wires; protection of automotive wiring harnesses; corrosion protection of oil and gas steel pipes; medical field, etc.

[0003] When heat shrink tubing is used in high-end precision minimally invasive interventional medical devices, it will come into direct contact with blood, and high requirements are placed on the appearance, physical properties, biochemical properties, and dimensional accuracy of the heat shrink tubing. Therefore, high requirements are placed on heat shrink tubing processing equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a heat shrink tube processing device, which solves the problems of heat shrink tube wall pollution, scratches and uneven outer diameter during the inflation process, and improves the stability of the product.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is to provide a heat shrink tube processing equipment, including a base, a fixed plate, a guide rail, a first slider, a second slider and a heater; the heater and the guide rail are both arranged on the top surface of the base, the first slider and the second slider are arranged opposite to each other and are slidably connected with the guide rail, the first slider is provided with a first chuck, and the second slider is provided with a second chuck; the first chuck and the second chuck are used to clamp the heat shrink tube; the heater is located between the first slider and the second slider, and the heater is provided with a first through hole for the heat shrink tube to pass through.

[0006] Preferably, the first chuck is a hollow chuck.

[0007] Preferably, the number of the guide rails is two, namely a first guide rail and a second guide rail, the first slider is slidably connected to the first guide rail, and the second slider is slidably connected to the second guide rail; the first guide rail and the second guide rail are arranged in parallel on the top surface of the base, and in the extension direction of the first guide rail or the second guide rail, the first guide rail and the second guide rail are staggered.

[0008] Preferably, the heater is a ring-shaped copper heater.

[0009] Preferably, a supporting and fixing device is included, the heater has a first side and a second side opposite to each other, the supporting and fixing device has a third through hole for the heat shrink tube to pass through, the third through hole is coaxially arranged with the first through hole, and the supporting and fixing device is used to support the heat shrink tube.

[0010] Preferably, it further comprises an inflating device and a decompression valve, wherein the inflating device is connected to the first clamp, the decompression valve is arranged between the first clamp and the inflating device, and the inflating device can move following the first clamp.

[0011] Preferably, it further comprises a laser diameter gauge, wherein the laser diameter gauge is provided with a second through hole for the heat shrink tube to pass through, and the laser diameter gauge is arranged on the second side of the heater to measure the outer diameter of the heat shrink tube.

[0012] Preferably, a controller is included, and the controller is communicatively connected with the laser diameter gauge, the decompression valve and the inflation device. The controller controls the air pressure and outer diameter of the heat shrink tube through the decompression valve and the inflation device according to the measurement data of the laser diameter gauge.

[0013] Preferably, a temperature control box is included, and the temperature control box is connected to the heater and is used to control the heating temperature of the heater.

[0014] Preferably, a display is included, which is communicatively connected to the controller and is used to set control parameters and display control status.

[0015] Preferably, the ratio of the outer diameter of the heat shrink tube to the inner diameter of the first through hole is 60%-80%.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the heat shrink tube processing equipment provided by the present invention, by arranging the heater ring on the periphery of the heat shrink tube, the heat shrink tube will not contact the heater, thereby avoiding scratching and contamination of the heat shrink tube; the heater has a simple structure and is easy to install and disassemble; the outer diameter of the heat shrink tube is controlled by the linkage of the decompression valve and the laser diameter gauge, thereby ensuring the stability of the product size, and the size can be changed according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the heat shrink tube processing equipment in an embodiment of the present invention.

[0018] In the figure:

[0019] 1-base, 2A-first fixed plate, 2B-second fixed plate; 3A-first guide rail, 3B-second guide rail, 4-decompression valve, 5A-first slider, 5B-second slider, 51A first chuck, 51B-second chuck, 6-heat shrink tube, 7-panel, 8-temperature control box, 9-support and fixing device, 10-heater, 11-laser diameter gauge. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Please refer to Figure 1 The heat shrink tube processing equipment provided by the present invention includes a base 1, a guide rail, a first slider 5A, a second slider 5B and a heater 10, wherein the guide rail is arranged on the top surface of the base 1, and the first slider 5A and the second slider 5B are arranged opposite to each other and are slidably connected to the guide rail. In this embodiment, the heat shrink tube processing equipment also includes a fixing plate, and the guide rail is fixed to the top surface of the base 1 through the fixing plate. Specifically, the fixing plate is fixed on the top surface of the base 1, and the guide rail is fixed to the fixing plate. There are two fixed plates, namely a first fixed plate 2A and a second fixed plate 2B; there are two guide rails, namely a first guide rail 3A and a second guide rail 3B; the first fixed plate 2A and the second fixed plate 2B are fixed in parallel on both sides of the base 1; the first guide rail 3A is fixed on the first fixed plate 2A; the second guide rail 3B is fixed on the second fixed plate 2B; the first slider 5A is slidably connected to the first guide rail 3A and can make a linear reciprocating motion along the first guide rail 3A under the action of external force; the second slider 5B is slidably connected to the second guide rail 3B and can make a linear reciprocating motion along the second guide rail 3B under the action of external force.

[0022] The first slider 5A is provided with a first chuck 51A, and the second slider 5B is provided with a second chuck 51B; the first chuck 51A and the second chuck 51B are used to respectively clamp the two ends of the heat shrink tube 6. The first chuck 51A and the second chuck 51B are preferably hollow chucks, and the first chuck 51A is connected to an inflating device, and the inflating device fills gas into the heat shrink tube 6 through the first chuck 5A. Preferably, the first chuck 51A and the second chuck 51B are rubber plug chucks that can be retracted and clamped.

[0023] The heater 10 is arranged on the top surface of the base 1 and is located between the first slider 5A and the second slider 5B. Preferably, the heater 10 is detachably connected to the base 1, for example, the heater 10 can be fixed to the base 1 by screws, which is convenient for replacement. The heater 10 is provided with a first through hole for the heat shrink tube 6 to pass through. The inner diameter of the first through hole is larger than the outer diameter of the heat shrink tube 6. Preferably, the ratio of the outer diameter of the heat shrink tube 6 to the inner diameter of the first through hole is 60% to 80%. The heat shrink tube 6 and the heater 10 are not in contact with each other, so as to avoid the heater 10 scratching and contaminating the heat shrink tube 6, and at the same time avoid the axial stress generated when the heater 10 is in direct contact with the heat shrink tube 6. Preferably, the heater 10 is a circular copper heater, and the copper heater is used to heat the heat shrink tube 6. The heater 10 has a simple structure, is convenient for the installation and removal of the heat shrink tube 6, and is convenient for replacing the heater 10 when the required size of the heat shrink tube changes. And the receiving temperature of the heat shrink tube 6 is relatively stable, with an accuracy range of up to ±1°C.

[0024] Further, the length of the first guide rail 3A and the second guide rail 3B is less than the length of the first fixed plate 2A and the second fixed plate 2B, and in the extension direction of the first guide rail 3A or the second guide rail 3B, the first guide rail 3A and the second guide rail 3B are staggered. Specifically, the first fixed plate 2A has a first end and a second end, the second fixed plate 2B has a third end and a fourth end, the first end and the third end are located on the same side, the second end and the fourth end are located on the same side, the first guide rail 3A is arranged at the first end of the first fixed plate 2A, the second guide rail 3B is arranged at the fourth end of the second fixed plate 2B, and the length of the first guide rail 3A and the second guide rail 3B is approximately half of the length of the first fixed plate 2A and the second fixed plate 2B.

[0025] In this embodiment, the position of the heater 10 is configured as the intersection of the line connecting the adjacent endpoints of the first guide rail 3A and the second guide rail 3B and the central axis of the first clamp 51A and the second clamp 51B. Specifically, the first guide rail 3A has a fifth end and a sixth end, and the second guide rail 3B has a seventh end and an eighth end. The fifth end and the first end are on the same side, and the seventh end and the fourth end are on the same side. The position of the heater 10 is configured as the intersection of the line connecting the sixth end and the eighth end and the central axis of the first clamp 51A and the second clamp 51B. This ensures that when the heat shrink tube 6 reciprocates in a straight line, each part of the heat shrink tube 6 can be heated by the heater 10.

[0026] Further, the heat shrink tube processing equipment provided by the present invention includes a supporting fixture 9, a heater 10 having a first side and a second side opposite to each other, the bottom of the supporting fixture 9 is fixed on the top surface of the base 1, and is arranged on the first side of the heater 10, and is made of a high temperature resistant flame retardant material, and has a third through hole for the heat shrink tube 6 to pass through, and the third through hole is coaxially arranged with the first through hole, and is used to support the heat shrink tube 6 and control the concentricity of the heat shrink tube 6 after installation and during the inflation process. The concentricity can be controlled to be above 85%.

[0027] The first chuck 51A and the second chuck 51B made of elastic polymer material are used to fix the two ends of the heat shrink tube 6, which can withstand the air pressure range of 0 to 600Kpa. Furthermore, the first chuck 51A and the second chuck 51B are placed in the metal screw cap for use, and the inner sides of the first slider 5A and the second slider 5B are provided with threads corresponding to the metal screw cap. The first chuck 51A and the second chuck 51B can be replaced by rotating the metal screw cap off the first slider 5A and the second slider 5B, which is easy to install and disassemble. When inflating heat shrink tubes 6 of different specifications, it is easy to install and disassemble chucks of different specifications. The first chuck 51A and the second chuck 51B can clamp and fix the originally extruded heat shrink tube 6. When fixing, one end of the heat shrink tube 6 passes through the heater 10 and is softened by heating the heat shrink tube 6. After fixing, the first slider 5A and the second slider 5B are controlled to run on the first guide rail 3A and the second guide rail 3B. At the same time, gas is filled into the heat shrink tube 6 to achieve the purpose of expansion. After running for a period of time, the preset production distance is reached, and the equipment automatically stops running and no longer fills with gas. Before the product is installed and fixed, the temperature, air pressure, running speed and production distance can be set. This makes the production of the product more flexible, and it is easier to find different optimal parameters for products of different specifications. For example, a FEP tube (perfluoroethylene propylene copolymer) with an original extrusion size of 5.0×5.7mm is inflated to 7.5×8.2mm; its process parameters are highly flexible, and inflation can be achieved at a speed of 1-4mm / s, a temperature of 200-250℃, and an air pressure of 200-420kPa.

[0028] Furthermore, in order to ensure the stability of product size, the heat shrink tube processing equipment provided by the present invention also includes a decompression valve 4, a laser diameter gauge 11, a temperature control box 8, a display 7 and a controller. The decompression valve 4 is arranged between the first chuck 51A and the inflator, and the inflator can move with the first chuck 51A. The decompression valve 4 is fixed, and the first chuck 51A can reciprocate. The laser diameter gauge 11 is fixed on the top surface of the base 1, and is provided with a second through hole for the heat shrink tube 6 to pass through. The laser diameter gauge 11 is arranged on the second side of the heater 10, and is used to measure the outer diameter of the heat shrink tube 6. The controller is connected in communication with the laser diameter gauge 11, the decompression valve 4, and the inflator. The controller controls the air pressure and outer diameter of the heat shrink tube 6 through the decompression valve 4 and the inflator according to the measurement data of the laser diameter gauge 11. Further, the controller is connected in communication with the first slider 5A and the second slider 5B, and the controller controls the first slider 5A and the second slider 5B to reciprocate on the guide rail. The temperature control box 8 can be connected to the heater 10 separately to control the heating temperature of the heater 10 separately; the temperature control box 8 can also be connected to the heater 10 and the controller at the same time, and the controller controls the heating temperature of the heater 10 through the temperature control box 8. The display 7 is connected to the controller for setting control parameters and displaying the control status.

[0029] The heat shrink tube processing equipment provided by the present invention adopts a decompression valve 4 and a laser diameter gauge 11 to control the outer diameter of the heat shrink tube. As the heat shrink tube 6 continues to expand, its internal volume is also constantly changing. In order to ensure the stability of the air pressure during the inflation process, the decompression valve 4 is used to control the air pressure for inflation to balance the pressure of the compressed air; the laser diameter gauge 11 measures the outer diameter of the heat shrink tube 6 at a frequency of at least 5 scans per second to ensure the validity of the data, and uses the PID program (proportional-integral-differential program) to control the stability of the outer diameter of the heat shrink tube, and the fluctuation range of the outer diameter of the heat shrink tube can be controlled within ±0.1mm. During the installation process of the heat shrink tube 6, the heat shrink tube 6 corresponding to the position of the heater 10 is heated for a long time, and it is necessary to run this section out of the heater 10 at the beginning of the program. Therefore, multiple programs are added to the PLC program, including the setting of production target parameters, as well as pre-expansion air pressure, pre-expansion air pressure reduction, pre-expansion and PID control of the production process, which not only meets the regulation of the manual control pre-expansion process, but also meets the regulation of the PID control pre-expansion process, increasing the applicability of the R&D experiment process while ensuring the stability of the production and use process. The turning outer diameter can be set in the program, so that the pre-expansion and normal inflation processes can be distinguished more conveniently.

[0030] Therefore, the heat shrink tube processing equipment provided by the present invention, by arranging the heater ring on the periphery of the heat shrink tube, the heat shrink tube will not contact the heater, thereby avoiding scratches and contamination of the heat shrink tube; the heater has a simple structure and is easy to install and disassemble; the outer diameter of the heat shrink tube is controlled by the linkage of the pressure relief valve and the laser diameter gauge, thereby ensuring the stability of the product size, and the size can be changed according to needs.

[0031] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A heat shrink tube processing equipment, characterized in that: It includes a base, a guide rail, a first slider, a second slider, an inflating device, a supporting and fixing device, and a heater; The heater and the guide rail are both arranged on the top surface of the base, the first slider and the second slider are slidably connected to the guide rail, the first slider is provided with a first chuck, and the second slider is provided with a second chuck; the first chuck and the second chuck are used to clamp the heat shrink tube, the first chuck is a hollow chuck, the inflatable device is connected to the first chuck, and the inflatable device can move with the first chuck; The heater is located between the first slider and the second slider, and a first through hole is provided on the heater for the heat shrink tube to pass through, the heater ring is arranged on the periphery of the heat shrink tube, and the heat shrink tube does not contact the heater; The heater has a first side and a second side opposite to each other. The supporting and fixing device is arranged on the first side of the heater. The supporting and fixing device has a third through hole for the heat shrink tube to pass through. The third through hole is coaxially arranged with the first through hole. The supporting and fixing device is used to support the heat shrink tube.

2. The heat shrink tube processing equipment according to claim 1, characterized in that: The number of the guide rails is two, namely a first guide rail and a second guide rail. The first slider is slidably connected to the first guide rail, and the second slider is slidably connected to the second guide rail. The first guide rail and the second guide rail are arranged in parallel on the top surface of the base, and in the extension direction of the first guide rail or the second guide rail, the first guide rail and the second guide rail are staggered.

3. The heat shrink tube processing equipment according to claim 1, characterized in that: The heater is a ring-shaped copper heater.

4. The heat shrink tube processing equipment according to claim 1, characterized in that: It also includes a decompression valve, which is connected to the inflation device.

5. The heat shrink tube processing equipment according to claim 4, characterized in that: It also includes a laser diameter gauge, which is provided with a second through hole through which the heat shrink tube can pass. The laser diameter gauge is arranged on the second side of the heater and is used to measure the outer diameter of the heat shrink tube.

6. The heat shrink tube processing equipment according to claim 5, characterized in that: The invention comprises a controller, which is communicatively connected with the laser diameter gauge, the decompression valve and the inflation device. The controller controls the air pressure and the outer diameter of the heat shrinkable tube through the decompression valve and the inflation device according to the measurement data of the laser diameter gauge.

7. The heat shrink tube processing equipment according to claim 6, characterized in that: A temperature control box is included, which is connected to the heater and is used to control the heating temperature of the heater.

8. The heat shrink tube processing equipment according to claim 6, characterized in that: A display is included, which is communicatively connected with the controller and is used to set control parameters and display control status.

9. The heat shrink tube processing equipment according to claim 1, characterized in that: The ratio of the outer diameter of the heat shrink tube to the inner diameter of the first through hole is 60%-80%.

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