Full-automatic FEP heat shrink tube expanding machine
By designing a fully automatic FEP heat shrink tube expansion machine, the gradual heating expansion of the pipe is achieved by using glycerol and heating components, and automatically sent out through clamping and cutting devices, the problems of poor production stability and low efficiency in the prior art are solved, and high efficiency is achieved , stable production of FEP heat shrink tubes.
Patent Information
- Application Number
- CN202420741363.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-10
AI Technical Summary
During the production process of existing FEP heat shrink tubes, the dry expansion method has problems such as poor production stability, slow speed, low yield, unstable size and low expansion ratio.
A fully automatic FEP heat shrink tube expansion machine is designed, including a feeding unit, an oil filling unit, a heating unit and a discharge unit. It uses glycerol as a heat transfer medium and lubricant to gradually heat and expand through multiple heating components and uses clamping. The cutting device automatically sends out the expanded pipe, improving the degree of production automation.
It realizes efficient and fully automatic production of FEP heat shrink tubes, improves yield and production efficiency, ensures the stability of pipe size, and improves the expansion ratio, solving the problem of low automation of traditional wet expansion machines.
Smart Images
Figure CN222246089U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat shrink tube equipment, in particular to a full-automatic FEP heat shrink tube expansion machine. Background Art
[0002] As we all know, FEP heat shrink tubing generally completes its production process through extrusion and expansion; among them, expansion is an indispensable process in the production process of FEP heat shrink tubing. The produced FEP heat shrink tubing is widely used in various fields such as medical, military, electronics and civilian use.
[0003] At present, the industry generally uses dry expansion machines for expansion. The widely used dry expansion methods in the industry include internal pressure method, vacuum method and internal pressure vacuum combination method. The corresponding expansion method is selected according to the size and material of the product. However, this dry expansion method still has problems such as poor production stability, slow speed, and more difficult stable production at high magnification.
[0004] The FEP expander currently used in China mainly produces by heating the die head and using air to expand the size. It has the following specific problems: (1) low efficiency and slow production speed, only about 0.1 m / min; (2) low yield rate, only about 50%; (3) unstable size, often with large and small tubes; (4) poor continuous expandability; (5) low expansion ratio. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a fully automatic FEP heat shrink tube expander with a simple and reasonable structure, which mainly can fully automatically expand and produce FEP heat shrink tubes, improve the production quality of FEP heat shrink tubes, and improve production efficiency and yield rate.
[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fully automatic FEP heat shrinkable tube expansion machine, which includes a first feeding unit, an oil injection unit, a heating unit and a discharging unit arranged in sequence along the feeding direction of the FEP heat shrinkable tube; wherein the first feeding unit includes a feeding wheel and a conveying drive mechanism, and the conveying drive mechanism is used to transport the FEP heat shrinkable tube on the feeding wheel to the oil injection unit; the oil injection unit includes an oil injection pump and a sizing tube for accommodating the FEP heat shrinkable tube, and the oil injection pump is connected to the sizing tube to inject glycerin into the sizing tube; the heating unit includes a plurality of heating components, and the plurality of heating components are sequentially sleeved on the sizing tube; the discharging unit includes a clamping and cutting device, and the clamping and cutting device is used to clamp and cut the FEP heat shrinkable tube after thermal expansion.
[0007] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, it also includes an oil return unit and a second feeding unit, the second feeding unit is arranged between the heating unit and the discharging unit, and the second feeding unit includes the conveying drive mechanism; the oil return unit is arranged between the heating unit and the second feeding unit to recover the glycerin in the sizing tube.
[0008] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the second feeding unit also includes a fixed plate and a plurality of first guide wheels, and the plurality of first guide wheels are arranged on the fixed plate in sequence along the feeding direction of the FEP heat shrink tube, and there is a height difference between two adjacent first guide wheels.
[0009] Furthermore, the fully automatic FEP heat shrink tube expander described in the utility model also includes an inflation device, which includes an air pump, and the air pump is used to blow air into the FEP heat shrink tube output by the feeding wheel.
[0010] Furthermore, in the fully automatic FEP heat shrink tube expansion machine described in the utility model, the conveying drive mechanism includes a mounting bracket and at least two conveying components, at least two of the conveying components are slidably arranged on the mounting bracket along the vertical direction, and a conveyor belt is provided on the conveying component. The conveyor belts on at least two of the conveying components extend along the feeding direction of the FEP heat shrink tube, and there is a height difference between the conveyor belts of two adjacent conveying components.
[0011] Furthermore, in the fully automatic FEP heat shrink tube expansion machine described in the utility model, the transmission drive mechanism also includes a guide rod, a first guide mechanism and a second guide mechanism, and the guide rod is provided with a guide hole; the first guide mechanism includes a vertical plate and at least two second guide wheels, and the vertical plate is also provided with a hollow groove, the second guide wheel is arranged on the vertical plate, and at least one guide wheel is respectively provided on both sides of the hollow groove; the second guide mechanism includes a first roller and two second rollers, the first roller extends in a horizontal direction, and the two second rollers extend in a vertical direction, and there is a spacing between the two second rollers.
[0012] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the temperature of the plurality of heating components shows a gradually increasing trend from one end close to the oil injection unit to the other end close to the discharge unit.
[0013] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the clamping and cutting device includes a first clamping mechanism and a cutting mechanism, the cutting mechanism includes a first driving member and a cutting member, the first driving member is used to drive the cutting member to cut the FEP heat shrink tube; wherein, the first clamping mechanism includes a second driving member, a limit member and a clamping member, the output end of the second driving member is rotatably connected to the clamping member, and the clamping member is also rotatably connected to the limit member to drive the clamping member to rotate around the limit member and clamp the FEP heat shrink tube between the clamping member and the limit member.
[0014] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the clamping and cutting device also includes a second clamping mechanism, the second clamping mechanism includes two stoppers arranged opposite to each other, and the distance between the two stoppers is the tube diameter of the FEP heat shrink tube after expansion is completed.
[0015] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the discharging unit includes a frame, a slide rail is provided on the frame, and the clamping and cutting device can be slidably arranged on the slide rail.
[0016] The beneficial effects of the utility model are as follows: the fully automatic FEP heat shrink tube expander optimizes its own structure, adopts a first feeding unit to realize fully automatic feeding, utilizes an oil injection unit and a heating unit to realize the expansion of the FEP heat shrink tube, and automatically delivers the FEP heat shrink tube after expansion through a discharging unit, thereby solving the problem of low automation degree of existing wet expanders; in actual use, the fully automatic FEP heat shrink tube expander can fully automatically expand and produce FEP heat shrink tubes, improve the production quality of FEP heat shrink tubes, increase the yield rate, and improve the production efficiency of FEP heat shrink tubes, which can improve the user experience and has good promotion prospects and application value. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the fully automatic FEP heat shrinkable tube expansion machine described in the utility model under one embodiment from one viewing angle;
[0018] Figure 2 It is a structural schematic diagram of the fully automatic FEP heat shrink tube expansion machine of the utility model in another perspective under one embodiment;
[0019] Figure 3 It is a structural schematic diagram of the fully automatic FEP heat shrinkable tube expander of the utility model in another perspective under one embodiment;
[0020] Figure 4This is a structural front view of the fully automatic FEP heat shrink tube expander according to the utility model in one embodiment;
[0021] Figure 5 for Figure 2 The enlarged view of the A part of the fully automatic FEP heat shrink tube expansion machine shown;
[0022] Figure 6 for Figure 2 The enlarged view of the B part of the fully automatic FEP heat shrink tube expansion machine shown;
[0023] Figure 7 for Figure 3 The enlarged view of the C part of the fully automatic FEP heat shrink tube expansion machine shown;
[0024] Figure 8 It is a structural schematic diagram of the first feeding unit of the fully automatic FEP heat shrinkable tube expander according to the utility model in one embodiment;
[0025] Fig. 9 It is a partial structural schematic diagram of the transmission drive mechanism of the fully automatic FEP heat shrink tube expansion machine described in the utility model in one embodiment;
[0026] Fig.10 It is a structural schematic diagram of a clamping and cutting device of a fully automatic FEP heat shrink tube expander described in the utility model under one embodiment.
[0027] Description of labels:
[0028] 1. First feeding unit; 11. Feeding wheel; 12. Conveying drive mechanism; 121. Mounting bracket; 122. Conveying assembly; 123. Conveying belt; 124. Guide rod; 125. Guide hole; 126. Vertical plate; 127. Second guide wheel; 128. First roller; 129. Second roller;
[0029] 2. Oil injection unit; 21. Sizing pipe;
[0030] 3. Heating unit; 31. Heating assembly;
[0031] 4. Oil return unit;
[0032] 5. Second feeding unit; 51. Fixed plate; 52. First guide wheel;
[0033] 6. Discharging unit; 61. Slide rail; 62. Clamping and cutting device; 63. First clamping mechanism; 631. Second driving member; 632. Limiting member; 633. Clamping member; 64. Cutting mechanism; 641. First driving member; 642. Cutting member; 65. Second clamping mechanism; 651. Stop member. DETAILED DESCRIPTION
[0034] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.
[0035] Please refer to Figures 1 to 10 As shown, the utility model designs a fully automatic FEP heat shrink tube expansion machine, which includes a first feeding unit 1, an oil injection unit 2, a heating unit 3 and a discharging unit 6 arranged in sequence along the feeding direction of the FEP heat shrink tube; wherein the first feeding unit 1 includes a feeding wheel 11 and a transmission drive mechanism 12, and the transmission drive mechanism 12 is used to transport the FEP heat shrink tube on the feeding wheel 11 to the oil injection unit 2; the oil injection unit 2 includes an oil injection pump and a sizing tube 21 for accommodating the FEP heat shrink tube, and the oil injection pump is connected to the sizing tube 21 to inject glycerin into the sizing tube 21; the heating unit 3 includes a plurality of heating components 31, and the plurality of heating components 31 are sequentially sleeved on the sizing tube 21; the discharging unit 6 includes a clamping and cutting device 62, and the clamping and cutting device 62 is used to clamp and cut the FEP heat shrink tube after thermal expansion.
[0036] In the above technical solution of the utility model, the fully automatic FEP heat shrink tube expander abandons the semi-automatic structural design adopted by the existing traditional wet expander. The fully automatic FEP heat shrink tube expander optimizes its own structure to adopt the first feeding unit 1 to realize fully automatic feeding, and realizes the expansion of the FEP heat shrink tube through the oil injection unit 2 and the heating unit 3. At the same time, the discharging unit 6 is used to automatically deliver the FEP heat shrink tube after expansion, thereby solving the problem of low degree of automation of the existing wet expander.
[0037] In actual use, the conveying drive mechanism 12 of the first feeding unit 1 of the fully automatic FEP heat shrinkable tube expander can automatically convey the FEP heat shrinkable tube on the feeding wheel 11 to the oil injection unit 2, and finally to the sizing tube 21 of the oil injection unit 2. At this time, the oil injection unit 2 can use the oil injection pump to inject glycerin into the sizing tube 21 to use glycerin as a heat transfer medium and lubrication effect; the FEP heat shrinkable tube arranged in the sizing tube 21 can be correspondingly conveyed to the multiple heating components 31 of the heating unit 3 for heating and tube expansion, and after the heating and tube expansion is completed, the clamping and cutting device 62 of the discharging unit 6 can correspondingly clamp and cut the FEP heat shrinkable tube after heat expansion.
[0038] It can be seen that the fully automatic FEP heat shrink tube expansion machine designed by the utility model can fully automatically expand and produce FEP heat shrink tubes and improve the production quality of FEP heat shrink tubes. It can improve the user experience and has good promotion prospects and application value.
[0039] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, it also includes an oil return unit 4 and a second feeding unit 5, the second feeding unit 5 is arranged between the heating unit 3 and the discharging unit 6, and the second feeding unit 5 includes the conveying drive mechanism 12; the oil return unit 4 is arranged between the heating unit 3 and the second feeding unit 5, so as to recover the glycerin in the sizing tube 21.
[0040] In the above technical scheme of the utility model, in order to ensure that the FEP heat shrinkable tube that has completed heating and expansion in the heating unit 3 can be smoothly conveyed to the subsequent discharging unit 6 for discharging and winding, in actual application, a second feeding unit 5 can also be set. The second feeding unit 5 can specifically include a conveying drive mechanism 12 as set in the first feeding unit 1, so as to convey the FEP heat shrinkable tube that has completed heating and sizing in the sizing tube 21 to the subsequent discharging unit 6, so as to facilitate subsequent processing.
[0041] Accordingly, in order to reduce production costs, the glycerol used as the heating medium can be recycled. Therefore, in practical applications, an oil return unit 4 can be provided between the heating unit 3 and the second feeding unit 5. The oil return unit 4 can be provided with an oil tank for recovering the glycerol in the sizing tube 21.
[0042] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the second feeding unit 5 also includes a fixed plate 51 and a plurality of first guide wheels 52, and the plurality of first guide wheels 52 are arranged on the fixed plate 51 in sequence along the feeding direction of the FEP heat shrink tube, and there is a height difference between two adjacent first guide wheels 52.
[0043] In the above technical solution of the utility model, in order to increase the pre-tightening force of the expanded FEP heat shrink tube, a plurality of first guide wheels 52 can also be arranged in the second feeding unit 5. By optimizing the arrangement of the first guide wheels 52, the feeding effect of the FEP heat shrink tube output from the heating unit 3 can be effectively adjusted.
[0044] Furthermore, the fully automatic FEP heat shrink tube expander described in the utility model also includes an inflation device, which includes an air pump, and the air pump is used to blow air into the FEP heat shrink tube output by the feeding wheel 11.
[0045] It should be emphasized that in the above-mentioned technical scheme of the present invention, in actual application, after the end of the initial FEP heat shrink tube is tied, the air pump of the inflation device can be used to continuously fill the front end tube of the FEP heat shrink tube output by the feeding wheel 11 with nitrogen of a certain pressure. At this time, the FEP heat shrink tube will expand and bulge to facilitate subsequent entry into the sizing tube 21. After the FEP heat shrink tube is heated and softened to a certain extent by multiple heating components 31, the air pressure of the injected gas will expand the FEP heat shrink tube, so as to use the diameter of the sizing tube 21 to limit the size of the FEP heat shrink tube after expansion and sizing, that is, the inner diameter of the sizing tube 21 is the diameter of the FEP heat shrink tube after expansion.
[0046] Furthermore, in the fully automatic FEP heat shrink tube expansion machine described in the utility model, the conveying drive mechanism 12 includes a mounting bracket 121 and at least two conveying components 122, at least two of the conveying components 122 are slidably arranged on the mounting bracket 121 along the vertical direction, and a conveyor belt 123 is provided on the conveying component 122. The conveyor belts 123 on at least two of the conveying components 122 extend along the feeding direction of the FEP heat shrink tube, and there is a height difference between the conveyor belts 123 of two adjacent conveying components 122.
[0047] In the above technical solution of the utility model, the transmission drive mechanism 12 optimizes its own structure to adopt at least two transmission components 122 provided with conveyor belts 123 for auxiliary feeding, and these conveyor belts 123 are arranged on the mounting bracket 121 in sequence along the vertical direction to control the height difference between two adjacent conveyor belts 123, so as to effectively adapt to FEP heat shrink tubes of different specifications, and the above conveyor belts 123 all extend along the feeding direction of the FEP heat shrink tube to enhance the pre-tightening force of the FEP heat shrink tube feeding. In actual use, the FEP heat shrink tube on the feeding wheel 11 can be pulled into the transmission drive mechanism 12 via a traction machine, and the FEP heat shrink tube can be specifically fed into the gap between two adjacent conveyor belts 123, so as to use the conveyor belt 123 on the transmission drive mechanism 12 for transmission pre-tightening, thereby enhancing the feeding effect of the FEP heat shrink tube. Furthermore, considering the requirements in different application situations, the operator can set the height of each conveyor belt 123 on the mounting bracket 121 according to specific use requirements, so as to more reasonably convey the FEP heat shrink tube.
[0048] In addition, in order to improve the use effect, a tension control mechanism can be used to control the tension size to feed the material into the conveying drive mechanism 12 for traction feeding, and the tension control mechanism is specifically controlled by a magnetic powder brake to control the rotating shaft to achieve the control of the tension size during feeding and ensure uniform speed and force for feeding.
[0049] It should be pointed out that in order to facilitate the user to adjust the height of the transmission component 122 on the mounting bracket 121, in actual application, a slide rail 61 and an adjusting screw can be provided on the mounting bracket 121. The adjusting screw can be threadedly connected to the transmission component 122, and the transmission component 122 is provided with a slide groove corresponding to the slide rail 61, so that the transmission component 122 can slide along the extension direction of the slide rail 61.
[0050] When the user needs to adjust the position of the conveying component 122 in the vertical height direction, the user can rotate the adjusting screw to make the adjusting screw rotate around its own rod axis. At this time, since the above-mentioned conveying component 122 is threadedly connected to the adjusting screw, the position of the adjusting screw in the vertical height direction remains unchanged, so the conveying component 122 will move on the adjusting screw and at the same time slide up and down along the extension direction of the above-mentioned slide rail 61.
[0051] Furthermore, in the fully automatic FEP heat shrink tube expansion machine described in the utility model, the conveying drive mechanism 12 also includes a guide rod 124, a first guide mechanism and a second guide mechanism, and the guide rod 124 is provided with a guide hole 125; the first guide mechanism includes a vertical plate 126 and at least two second guide wheels 127, and the vertical plate 126 is also provided with a hollow groove, and the second guide wheel 127 is arranged on the vertical plate 126, and at least one guide wheel is respectively provided on both sides of the hollow groove; the second guide mechanism includes a first roller 128 and two second rollers 129, the first roller 128 extends in the horizontal direction, and the two second rollers 129 extend in the vertical direction, and there is a spacing between the two second rollers 129.
[0052] It should be noted that in actual application, in order to increase the preload force and guide the FEP heat shrink tube, a guide rod 124, a first guide mechanism and a second guide mechanism are also provided in the above-mentioned feeding device to improve the preload force of the FEP heat shrink tube and guide the feeding direction of the FEP heat shrink tube.
[0053] Furthermore, in the fully automatic FEP heat shrink tube expander described in the present invention, the temperature of the plurality of heating components 31 shows a gradually increasing trend from one end close to the oil injection unit 2 to the other end close to the discharge unit 6 .
[0054] It should be noted that in the above-mentioned technical scheme of the present invention, in order to improve the sizing expansion effect of the FEP heat shrinkable tube, the temperature of the above-mentioned multiple heating components 31 can be gradually increased from one end close to the oil injection unit 2 to the other end close to the discharge unit 6, so as to gradually heat and soften the FEP heat shrinkable tube; of course, in order to obtain a better expansion effect, the sizing tube 21 can also be specifically selected as a multi-section sizing tube 21, that is, the sizing tube 21 can be connected in multiple sections, and the operator can reasonably set the size specifications of the sizing tube 21 according to specific needs.
[0055] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the clamping and cutting device 62 includes a first clamping mechanism 63 and a cutting mechanism 64, the cutting mechanism 64 includes a first driving member 641 and a cutting member 642, the first driving member 641 is used to drive the cutting member 642 to cut the FEP heat shrink tube; wherein, the first clamping mechanism 63 includes a second driving member 631, a limit member 632 and a clamping member 633, the output end of the second driving member 631 is rotatably connected to the clamping member 633, and the clamping member 633 is also rotatably connected to the limit member 632 to drive the clamping member 633 to rotate around the limit member 632, and clamp the FEP heat shrink tube between the clamping member 633 and the limit member 632.
[0056] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the clamping and cutting device 62 also includes a second clamping mechanism 65, and the second clamping mechanism 65 includes two stoppers 651 arranged opposite to each other, and the distance between the two stoppers 651 is the diameter of the FEP heat shrink tube after expansion is completed.
[0057] Furthermore, in the fully automatic FEP heat shrink tube expander described in the utility model, the discharging unit 6 comprises a frame, a slide rail 61 is provided on the frame, and the clamping and cutting device 62 is slidably provided on the slide rail 61 .
[0058] Please refer to Figure 1 - Fig.10 , Embodiment 1 of the present utility model is:
[0059] A fully automatic FEP heat shrinkable tube expansion machine, which specifically includes: a first feeding unit 1, an oil injection unit 2, a heating unit 3, an oil return unit 4, a second feeding unit 5 and a discharging unit 6 which are sequentially arranged along the feeding direction of the FEP heat shrinkable tube.
[0060] In actual use, the transmission drive mechanism 12 of the first feeding unit 1 of the fully automatic FEP heat shrinkable tube expander can automatically convey the FEP heat shrinkable tube on the feeding wheel 11 to the oil injection unit 2, and finally to the sizing tube 21 of the oil injection unit 2. At this time, the oil injection unit 2 can use the oil injection pump to inject glycerin into the sizing tube 21, so as to use the glycerin to play the role of heat transfer medium and lubrication; the FEP heat shrinkable tube arranged in the sizing tube 21 can be correspondingly conveyed to the multiple heating components 31 of the heating unit 3 for heating and tube expansion, and after the heating and tube expansion is completed, the glycerin is recovered by the oil return unit 4, and the expanded FEP heat shrinkable tube is sent to the discharging unit 6 by the second feeding unit 5, and the clamping and cutting device 62 of the discharging unit 6 can correspondingly clamp and cut the FEP heat shrinkable tube after heat expansion.
[0061] It is important to emphasize that Figure 3 As shown, refer to Figure 5 and Figure 6 In this embodiment, the first feeding unit 1 and the second feeding unit 5 both use a transmission drive mechanism 12 to feed the FEP heat shrink tube and increase the pre-tightening force when feeding the FEP heat shrink tube.
[0062] like Figure 5 , Figure 6 and Figure 8 As shown, in this embodiment, the conveying drive mechanism 12 includes a mounting bracket 121 and two conveying components 122. The two conveying components 122 are slidably arranged on the mounting bracket 121 along the vertical direction, and each conveying component 122 is provided with a conveyor belt 123. The conveyor belt 123 on each conveying component 122 extends along the feeding direction of the FEP heat shrink tube.
[0063] When setting, there is a height difference between the conveyor belts 123 of two adjacent conveyor assemblies 122, so that the FEP heat shrink tube can enter from the gap between the height differences of the upper and lower conveyor belts 123, and be pressed and transported to the downstream unit by the two conveyor belts 123. In addition, in this embodiment, in order to increase the pre-tightening force of the FEP heat shrink tube and improve the transmission effect of the FEP heat shrink tube, the transmission drive mechanism 12 is also provided with a guide rod 124, a first guide mechanism and a second guide mechanism, and a guide hole 125 is provided on the guide rod 124, and the guide hole 125 is used for the FEP heat shrink tube to pass through, thereby guiding the feeding direction of the FEP heat shrink tube, so the aperture of the above-mentioned guide hole 125 needs to be not less than the diameter of the FEP heat shrink tube.
[0064] In this embodiment, the first guide mechanism includes a vertical plate 126 and a second guide wheel 127. The installation height of the vertical plate 126 is adjustable, and a hollow groove is provided on the vertical plate 126. A second guide wheel 127 is provided on both sides of the hollow groove. At this time, the FEP heat shrink tube passing through the guide hole 125 can be pressed against the second guide wheel 127 and pass through the above-mentioned hollow groove to enter the subsequent second guide mechanism, thereby effectively utilizing the second guide wheel 127 to increase the preload force of the FEP heat shrink tube.
[0065] Correspondingly, the second guide mechanism includes a first roller 128 and two second rollers 129, wherein the first roller 128 extends in the horizontal direction, and the two second rollers 129 extend in the vertical direction, and there is a gap between two adjacent second rollers 129; when the FEP heat shrink tube is fed into the second guide mechanism, the first roller 128 can press the FEP heat shrink tube accordingly, and roll along the horizontal axis itself; the FEP heat shrink tube pressed by the first roller 128 can pass through the gap between the two adjacent second rollers 129, and the second roller 129 rolls along the vertical axis itself to feed the FEP heat shrink tube into the gap between the two conveyor belts 123. In this embodiment, the second guide mechanism is provided at both the upstream and downstream of the conveyor assembly 122, that is, the second guide mechanism is also provided downstream of the conveyor belt 123 of the conveyor assembly 122, and the application effect of the downstream second guide mechanism is the same as above, which will not be described in detail here.
[0066] That is to say, in this embodiment, in order to improve the conveying effect, the conveying drive mechanism 12 of the first feeding unit 1 can automatically convey the FEP heat shrink tube on the feeding wheel 11 to the sizing tube 21 of the oil injection unit 2. At this time, the oil injection unit 2 can use the oil injection pump to inject glycerin into the sizing tube 21, and let the FEP heat shrink tube sleeved in the sizing tube 21 enter the subsequent heating unit 3. Among them, the heating unit 3 specifically includes a plurality of heating components 31, and the temperature of the plurality of heating components 31 is gradually increased from one end close to the oil injection unit 2 to the other end close to the discharging unit 6, so as to gradually heat and soften the FEP heat shrink tube.
[0067] It should be pointed out that, in the present embodiment, the fully automatic FEP heat shrink tube expander is also provided with an inflation device including an air pump. In order to facilitate the thermal expansion of the FEP heat shrink tube, the operator can tie a knot at the end of the initial FEP heat shrink tube, and then use the air pump of the inflation device to fill a certain pressure of nitrogen into the front end tube of the FEP heat shrink tube output by the feeding wheel 11. At this time, the FEP heat shrink tube will expand and bulge to facilitate subsequent entry into the sizing tube 21. After the FEP heat shrink tube is heated and softened to a certain extent by multiple heating components 31, the air pressure of the injected gas will expand the FEP heat shrink tube, so as to use the diameter of the sizing tube 21 to limit the size of the FEP heat shrink tube after expansion and sizing, that is, the inner diameter of the sizing tube 21 is the diameter of the FEP heat shrink tube after expansion.
[0068] Therefore, after the heating and expansion of the FEP heat shrink tube is completed through the above process, the glycerin in the sizing tube 21 can be recovered by the oil tank of the oil return unit 4 when passing through the oil return unit 4; at the same time, the conveying drive mechanism 12 of the second feeding unit 5 can correspond to the conveying of the FEP heat shrink tube after heat expansion.
[0069] In this embodiment, the second feeding unit 5 also adopts the structure of the conveying drive mechanism 12 in the above-mentioned first feeding unit 1 to convey the FEP heat shrinkable tube. However, in order to further improve the preload force, a fixed plate 51 and five first guide wheels 52 are further provided on the second feeding unit 5. The five first guide wheels 52 are arranged on the fixed plate 51 in sequence along the feeding direction of the FEP heat shrinkable tube, and there is a height difference between two adjacent first guide wheels 52. The guide wheels are used to change the feeding preload force of the FEP heat shrinkable tube, so that the FEP heat shrinkable tube output by the conveying drive mechanism 12 of the above-mentioned second feeding unit 5 can be guided by the above-mentioned five first guide wheels 52 and then conveyed to the final discharge unit 6 accordingly.
[0070] Correspondingly, in this embodiment, the discharging unit 6 includes a frame and a clamping and cutting device 62, the frame is provided with a slide rail 61, and the clamping and cutting device 62 is slidably arranged on the slide rail 61; wherein the above-mentioned clamping and cutting device 62 includes a first clamping mechanism 63, a cutting mechanism 64 and a second clamping mechanism 65, and the above-mentioned first clamping mechanism 63, the cutting mechanism 64 and the second clamping mechanism 65 are arranged in sequence along the feeding direction of the FEP heat shrink tube.
[0071] like Fig.10As shown, in this embodiment, the cutting mechanism 64 includes a first driving member 641 and a cutting member 642, and the cutting member 642 includes an upper blade and a lower blade that are hinged to each other, and the upper blade and the lower blade are cross-hinged together through a pivot. In actual application, there is a hinge angle between the upper blade and the lower blade, and the FEP heat shrink tube fed into the cutting mechanism 64 can be correspondingly extended into the hinge angle (i.e., between the upper blade and the lower blade). At this time, the first driving member 641 can be further controlled to work, so as to use the first driving member 641 to control and drive the upper blade and the lower blade to move closer to each other, thereby effectively cutting the FEP heat shrink tube.
[0072] Accordingly, if Fig.10 As shown, the first clamping mechanism 63 includes a second driving member 631, a limiting member 632 and a clamping member 633, wherein the clamping member 633 is specifically an L-shaped clamping member 633, wherein the output end of the second driving member 631 is rotatably connected to one end of the L-shaped clamping member 633, and the L-shaped clamping member 633 is also rotatably connected to the limiting member 632. At this time, the second driving member 631 can drive the L-shaped clamping member 633 to rotate around the limiting member 632, so that the other end of the L-shaped clamping member 633 cooperates with the limiting member 632 to clamp the FEP heat shrinkable tube, that is, the FEP heat shrinkable tube is clamped between the L-shaped clamping member 633 and the limiting member 632.
[0073] And, if Fig.10 As shown, the second clamping mechanism 65 designed in this embodiment includes a mounting block and two stoppers 651 arranged opposite to each other, the mounting block is provided with two mounting posts arranged opposite to each other, and each mounting post is provided with a stopper 651. The stopper 651 includes a bolt and a flexible pad, and the flexible pad is specifically selected as a silicone pad. The bolt is threadedly connected to the mounting post, and one end of the bolt passes through the mounting post and connects to the flexible pad, so that the flexible pads of the two stoppers 651 are close to each other, and it is ensured that the spacing between the flexible pads of the two stoppers 651 is the diameter of the expanded FEP heat shrink tube.
[0074] Therefore, in actual application, the expanded FEP heat shrink tube transmitted to the discharging unit 6 by the second feeding unit 5 will enter the second clamping mechanism 65, the cutting mechanism 64 and the first clamping mechanism 63, and the FEP heat shrink tube will be clamped by the first clamping mechanism 63 and the second clamping mechanism 65, and the FEP heat shrink tube will be effectively cut by the cutting mechanism 64.
[0075] Experimental verification shows that the fully automatic FEP heat shrink tube expansion machine designed by the utility model has excellent use effect, which can effectively solve the problems of the above-mentioned traditional domestic old expansion machine process. Its specific use effects are as follows: (1) The production speed is 10 times that of the original, and the current production speed is 0.7-2.5 m / min; (2) The yield rate is high, and the yield rate is 85%-95%; (3) The size is stable, and the positive and negative tolerances are within ±0.05; (4) It can be expanded at a high rate, and the maximum rate can reach 2 times; (5) The continuous expansion is good, and when the expansion rate is above 1.2, FEP heat shrink tubes can be continuously produced for 1000 meters.
[0076] From the above, it can be seen that the fully automatic FEP heat shrink tube expander designed by the utility model optimizes its own structure, thereby solving the problem of low automation level of existing wet expanders. It can fully automatically expand and produce FEP heat shrink tubes, and improve the production quality of FEP heat shrink tubes, improve the yield rate, and improve the production efficiency of FEP heat shrink tubes. It can improve the user experience and has good promotion prospects and application value.
[0077] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.
Claims
1. A fully automatic FEP heat shrink tube expansion machine, characterized in that: It comprises a first feeding unit, an oil injection unit, a heating unit and a discharging unit which are arranged in sequence along the feeding direction of the FEP heat shrinkable tube; wherein the first feeding unit comprises a feeding wheel and a transmission drive mechanism, and the transmission drive mechanism is used to transport the FEP heat shrinkable tube on the feeding wheel to the oil injection unit; the oil injection unit comprises an oil injection pump and a sizing tube for accommodating the FEP heat shrinkable tube, and the oil injection pump is connected to the sizing tube to inject glycerin into the sizing tube; the heating unit comprises a plurality of heating components, and the plurality of heating components are sequentially sleeved on the sizing tube; the discharging unit comprises a clamping and cutting device, and the clamping and cutting device is used to clamp and cut the FEP heat shrinkable tube after thermal expansion.
2. The fully automatic FEP heat shrink tube expander according to claim 1, characterized in that: It also includes an oil return unit and a second feeding unit, wherein the second feeding unit is arranged between the heating unit and the discharging unit, and the second feeding unit includes the conveying drive mechanism; the oil return unit is arranged between the heating unit and the second feeding unit to recover the glycerin in the sizing tube.
3. The fully automatic FEP heat shrink tube expander according to claim 2, characterized in that: The second feeding unit also includes a fixed plate and a plurality of first guide wheels. The plurality of first guide wheels are sequentially arranged on the fixed plate along the feeding direction of the FEP heat shrink tube, and there is a height difference between two adjacent first guide wheels.
4. The fully automatic FEP heat shrink tube expander according to claim 1, characterized in that: It also includes an inflation device, which includes an air pump, and the air pump is used to blow air into the FEP heat shrink tube output by the feeding wheel.
5. The fully automatic FEP heat shrink tube expander according to claim 1, characterized in that: The conveying drive mechanism includes a mounting bracket and at least two conveying components, at least two of the conveying components are slidably arranged on the mounting bracket in a vertical direction, and a conveyor belt is provided on the conveying component. The conveyor belts on at least two of the conveying components extend along the feeding direction of the FEP heat shrink tube, and there is a height difference between the conveyor belts of two adjacent conveying components.
6. The fully automatic FEP heat shrink tube expander according to claim 5, characterized in that: The conveying drive mechanism also includes a guide rod, a first guide mechanism and a second guide mechanism, the guide rod is provided with a guide hole; the first guide mechanism includes a vertical plate and at least two second guide wheels, the vertical plate is also provided with a hollow groove, the second guide wheel is arranged on the vertical plate, and at least one guide wheel is respectively provided on both sides of the hollow groove; the second guide mechanism includes a first roller and two second rollers, the first roller extends in a horizontal direction, the two second rollers extend in a vertical direction, and there is a spacing between the two second rollers.
7. The fully automatic FEP heat shrink tube expander according to claim 1, characterized in that: The temperature of the plurality of heating components increases gradually from one end close to the oil injection unit to the other end close to the discharge unit.
8. The fully automatic FEP heat shrink tube expander according to claim 1, characterized in that: The clamping and cutting device includes a first clamping mechanism and a cutting mechanism, the cutting mechanism includes a first driving member and a cutting member, the first driving member is used to drive the cutting member to cut the FEP heat shrinkable tube; wherein the first clamping mechanism includes a second driving member, a limiting member and a clamping member, the output end of the second driving member is rotatably connected to the clamping member, and the clamping member is also rotatably connected to the limiting member to drive the clamping member to rotate around the limiting member and clamp the FEP heat shrinkable tube between the clamping member and the limiting member.
9. The fully automatic FEP heat shrink tube expander according to claim 8, characterized in that: The clamping and cutting device further comprises a second clamping mechanism, wherein the second clamping mechanism comprises two stoppers arranged opposite to each other, and the distance between the two stoppers is the diameter of the FEP heat shrink tube after expansion.
10. The fully automatic FEP heat shrink tube expander according to claim 8, characterized in that: The discharging unit comprises a frame, a slide rail is arranged on the frame, and the clamping and cutting device is slidably arranged on the slide rail.