Automatic hot drying shrinkage pipe machine

Abstract

The utility model discloses an automatic hot drying pipe shrinking machine which comprises a machine frame, a hot air blower, a conveying device, a hot drying carrier and a controller, the hot air blower fixedly installed on the machine frame can blow hot air towards the hot drying carrier entering the position under the hot air blower, and the conveying device can continuously convey the hot drying carrier forwards. The controller controls the hot-air blower and the conveying device to work, each hot-drying carrier comprises a positioning base and an electric wire support fixedly installed on the positioning base, and an electric wire inserting groove with the inner diameter of the upper section larger than the inner diameter of the lower section is formed in each electric wire support; a heat shrink tube to be thermally shrunk can be inserted into the upper section of the wire slot, the lower end face of the heat shrink tube is stopped on a step face between the upper section and the lower section of the wire slot, a wire rod can be inserted into the heat shrink tube and the lower section of the wire slot, and the lower end face of the wire rod is stopped on the bottom face of the lower end of the wire slot. And the finished product after thermal shrinkage is high in quality and can meet the requirement of small-amount production.

Description

Technical Field

[0001] The utility model relates to electric wire production equipment, in particular to an automatic heat shrink tube drying machine. Background Art

[0002] In the production process of some special wires, it is often necessary to first cut the wires to a fixed length and then tightly apply a layer of heat shrink tubing to the outside of the wires through a heat shrink process. Generally, the ends of the wires are required to extend a certain distance outside the ends of the heat shrink tubing to facilitate subsequent wiring. Currently, the heat shrink tubing of the wires through the heat shrink process in wiring harness factories is a manual operation. That is, a heat drying gun is used to blow each heat shrink tubing pre-applied to the outside of the wires, causing the heat shrink tubing to shrink tightly to the outside of the wires. This manual heat shrinking method has low production efficiency. In addition, the product consistency after heat shrinking is poor, and it is easy for the heat shrink tubing to become loose due to insufficient drying, or to be damaged due to excessive shrinkage.

[0003] However, the cost of using a professional heat shrink machine is relatively high, which is too high for small wire harness processing plants and is not suitable for small-scale production needs. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the utility model provides an automatic heat shrink tube machine, which can realize automatic and efficient wrapping of heat shrink tubes for electric wires. The finished products after the electric wires are wrapped with heat shrink tubes have good consistency and the heat shrink tubes are firmly wrapped and positioned.

[0005] The utility model adopts the following technical solution to solve its technical problems: an automatic heat shrink tube machine, comprising a frame, a hot air blower, a conveying device, a heat drying carrier and a controller. The hot air blower is fixedly mounted on the frame, and the hot air blower can blow hot air toward the heat drying carrier entering directly below it. The conveying device can continuously convey the heat drying carrier forward so that each heat drying carrier passes directly below the hot air blower one by one. The controller controls the operation of the hot air blower and the conveying device. The heat drying carrier comprises a positioning base and a wire bracket, and the wire bracket is fixedly mounted on the positioning base. The wire bracket is provided with a wire slot with an upper section inner diameter larger than a lower section inner diameter. The heat shrink tube to be heat shrunk can be inserted into the upper section of the wire slot, and the lower end surface of the heat shrink tube is stopped on the step surface between the upper and lower sections of the wire slot. The wire can be inserted into the heat shrink tube and the lower section of the wire slot, and the lower end surface of the wire is stopped on the bottom surface of the lower end of the wire slot.

[0006] As a further improvement of the present invention, the conveying device includes a sprocket, a chain and a servo motor. At least two sprockets are installed on the frame and can rotate around a horizontal rotating shaft. The annular chain is arranged on the outside of the circumference of each sprocket. The sprocket and the chain are engaged for transmission. The positioning base of the hot drying carrier is fixedly installed on the chain. Several hot drying carriers are arranged at intervals along the extension direction of the chain. The servo motor drives a sprocket to rotate.

[0007] As a further improvement of the present invention, a finished product collection box is provided. The finished product collection box is located below the bend where the chain turns from top to bottom. The wires that have been shrunk by the heat shrink tubing in the hot drying carrier slide out of the wire slots of the hot drying carrier as the hot drying carrier tilts. The finished product collection box can receive the wires that fall from the hot drying carrier.

[0008] As a further improvement of the present invention, the frame is also provided with an inclined slide, the lower end of the inclined slide is directly connected with the opening of the finished product collection box K, and the upper end of the inclined slide is located below the turning point where the chain turns from top to bottom. The wires dropped from the hot drying carrier slide down along the inclined slide into the finished product collection box.

[0009] As a further improvement of the present invention, the frame is also provided with a chain tension adjustment device, which includes an adjusting slider and a slider driving device. The adjusting slider can be installed on the frame so as to slide along the extension direction of the chain. The slider driving device drives the adjusting slider to slide and change its position on the frame. A sprocket can be installed on the adjusting block so as to rotate around a horizontal rotating shaft. The sprocket can adjust the tension of the chain by changing the position of the adjusting slider.

[0010] As a further improvement of the present invention, a carrier slide is further provided on the frame, the hot drying carrier can slide forward along the carrier slide, and the hot air blower is located directly above the carrier slide.

[0011] As a further improvement of the present invention, the wire bracket is provided with a first partition, a second partition and a third partition extending horizontally from top to bottom. The first partition is provided with an upper socket matching the outer diameter of the heat shrink tube, and the second partition is provided with a lower socket matching the outer diameter of the wire. The upper socket forms the upper section of the wire slot, the lower socket forms the lower section of the wire slot, the upper side surface of the second partition forms a step surface between the upper and lower sections of the wire slot, and the side surface of the third partition forms the bottom surface of the wire slot.

[0012] As a further improvement of the present invention, a plurality of upper jacks arranged in a straight line and spaced apart along the conveying direction are provided on the first partition, and a plurality of lower jacks arranged in a straight line and spaced apart along the conveying direction are provided on the second partition, and the upper jacks and the lower jacks are arranged coaxially opposite to each other. A plurality of vertically extending baffles are also fixed between the first partition and the second partition, and heat shrink tube guide channels connected to the upper jacks and the lower jacks are formed between adjacent baffles, and the heat shrink tube guide channels and the upper jacks together form the upper section of the wire slot.

[0013] As a further improvement of the present invention, the rack is also provided with a wire placement box and a heat shrink tube placement box, which are respectively arranged on both sides of the vertical conveying direction of the hot drying carrier, and the wire placement box and the heat shrink tube placement box are respectively placed with the wires and heat shrink tubes to be heat shrunk.

[0014] As a further improvement of the present invention, a hot air temperature sensor is also provided on the frame, which can sense the hot air temperature blown to the hot drying carrier. The hot air temperature sensor is connected to the controller by wires for communication, and transmits the hot air temperature data blown to the hot drying carrier to the controller.

[0015] The beneficial effects of the present invention are as follows: the present invention automatically pre-positions the heat shrink tubing and the wires through the heat drying carrier, and the conveying device conveys the heat drying carriers pre-positioned with the wires and heat shrink tubing forward one by one, so that they pass directly under the hot air blower, and the hot air blower blows hot air to the pre-assembled wires and heat shrink tubing, so that the heat shrink tubing shrinks and wraps tightly around the outside of the wires due to heat. The present invention positions the wires and heat shrink tubing through the wire slots whose upper inner diameter is larger than the lower inner diameter, so that the length of the wires extending outside the two ends of the heat shrink tubing is the designed length, and the finished product after heat shrinkage has high consistency. The controller can control the power of the hot air blower so that the temperature of the hot air blown to the heat shrink tube is just enough to shrink the heat shrink tube, thereby preventing the heat shrink tube from being damaged by inadequate heat shrinkage or overheating. The controller can also control the speed at which the conveying device conveys the hot drying carrier forward, so that the hot air blowing time of the heat shrink tube is controlled, ensuring that the degree of heat shrinkage of the heat shrink tube on the outside of the wire is controlled, which is conducive to ensuring the quality of the finished product. The utility model has a simple structure and low manufacturing cost, and can be applied to small factories with small production needs. At the same time, it effectively reduces the labor intensity of workers and saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the structural principle of the utility model;

[0017] Figure 2 This is a three-dimensional diagram of the heat drying carrier conveying mechanism of the present invention;

[0018] Figure 3 This is a three-dimensional diagram of the thermal drying carrier of the present invention. DETAILED DESCRIPTION

[0019] Embodiment: An automatic heat shrink tube machine includes a frame 1, a hot air blower 2, a conveying device 3, a heat drying carrier 4 and a controller, wherein the hot air blower 2 is fixedly installed on the frame 1, and the hot air blower 2 can blow hot air toward the heat drying carrier 4 entering directly below it, and the conveying device 3 can continuously convey the heat drying carrier 4 forward so that each heat drying carrier 4 passes directly below the hot air blower 2 one by one, and the controller controls the operation of the hot air blower 2 and the conveying device 3. The heat drying carrier 4 includes a positioning base 41 and a wire bracket 42, and the wire bracket 42 is fixedly installed on the positioning base 41. The wire bracket 42 is provided with a wire slot with an upper inner diameter larger than a lower inner diameter. The heat shrinkable tube to be heat shrunk can be inserted into the upper section of the wire slot, and the lower end surface of the heat shrinkable tube is stopped on the step surface between the upper and lower sections of the wire slot, and the wire 6 can be inserted into the heat shrinkable tube and the lower section of the wire slot, and the lower end surface of the wire 6 is stopped on the bottom surface of the lower end of the wire slot.

[0020] During operation, the conveying device 3 is started to drive the heat drying carrier 4 to be transported forward one by one, and the worker or the mechanical arm first installs the heat shrink tube into the upper section of the wire slot, and then inserts the wire 6 into the heat shrink tube. The lower end of the wire 6 is inserted into the lower section of the wire slot and stopped on the bottom surface of the wire slot. The lower end surface of the heat shrink tube is blocked by the step surface in the wire slot, which realizes the automatic positioning of the axial position of the wire 6 and the heat shrink tube. The wire 6 and the heat shrink tube enter the position of the hot air blower 2 with the conveying device 3 for heat drying. After heat drying, the heat shrink tube is tightly attached to the outside of the wire 6 to form an insulating layer. The equipment realizes the automatic axial positioning of the wire 6 and the heat shrink tube, and automatically performs heat drying and shrinkage. The heat shrink tube is finally tightly wrapped around the outside of the wire 6 to form an insulating layer, avoiding the need to manually blow the heat shrink tube with the hot air blower 2, reducing labor costs, and improving production efficiency and wire quality.

[0021] The conveying device 3 includes a sprocket 31, a chain 32 and a servo motor 33. At least two sprockets 31 are installed on the frame 1 so as to be rotatable around a horizontal axis. The annular chain 32 is sleeved on the outer side of the circumference of each sprocket 31. The sprocket 31 and the chain 32 are engaged for transmission. The positioning base 41 of the hot drying carrier 4 is fixedly installed on the chain 32. Several hot drying carriers 4 are arranged at intervals along the extension direction of the chain 32. The servo motor 33 drives one sprocket 31 to rotate.

[0022] After the servo motor 33 is started, as the sprocket 31 rotates, the chain 32 carries the hot drying carrier 4 forward and first arrives just below the hot air blower 2 for heat shrinking tube drying. Then, as the chain 32 moves, the wires with the heat shrinking tube dried fall out of the wire slots of the hot drying carrier 4 under the action of automatic gravity when the chain 32 rotates to the bottom of the sprocket 31, so that the hot drying carrier 4 is empty again. When the empty hot drying carrier 4 rotates to the top with the chain 32, the operation of reloading the heat shrinking tube and wire 6 can be carried out again. This mechanism realizes the recycling of the hot drying carrier 4. In addition, the conveying device 3 can also be a cylinder push-pull mechanism, in which the hot drying carrier 4 is loaded by manual or mechanical arms, and the cylinder is pushed out. The hot drying carrier 4 arrives below the hot air blower 2. After the tube shrinking is completed, the cylinder retracts, and the hot drying carrier 4 leaves the bottom of the hot air blower 2, and is unloaded by manual or mechanical arms. Such structures are equivalent replacement structures that can be easily thought of by technicians in this field based on this application and fall within the scope of protection of this patent.

[0023] A finished product collection box 7 is also provided. The box is located below the bend where the chain 32 turns downward from the top. As the drying carrier 4 tilts, the wires that have shrunk through the heat shrink tubing in the drying carrier 4 slide out of the wire slots in the drying carrier 4. The box receives the wires that fall out of the drying carrier 4. After falling out of the wire slots in the drying carrier 4, the wires fall into the box 7 for automatic collection.

[0024] The frame 1 is also provided with an inclined slide 8, the lower end of which is aligned with the opening of the finished product collection box 7, and the upper end of which is located below the bend where the chain 32 turns from top to bottom. The wires that fall from the hot drying carrier 4 slide down along the inclined slide 8 and enter the finished product collection box 7. After falling out of the wire slot of the hot drying carrier 4, the wires slide down along the inclined slide 8 to prevent them from being damaged.

[0025] The frame 1 is also provided with a chain 32 tension adjustment device, which includes an adjustment slider 9 and a slider drive device 10. The adjustment slider 9 is mounted on the frame 1 so as to be slidable along the extension direction of the chain 32. The slider drive device 10 drives the adjustment slider 9 to slide and change its position on the frame 1. A sprocket 31 is mounted on the adjustment block so as to be rotatable about a horizontal axis. The sprocket 31 adjusts the tension of the chain 32 as the adjustment slider 9 changes position. The chain 32 tension adjustment device adjusts the tension of the chain 32 to prevent the chain 32 from being too loose and disengaging from the sprocket 31, or from being too tight and breaking. The slider drive device 10 may be a screw.

[0026] The frame 1 is further provided with a carrier slide 11 , and the hot drying carrier 4 can slide forward along the carrier slide 11 . The hot air blower 2 is located directly above the carrier slide 11 .

[0027] The wire support 42 is provided with a first partition 421, a second partition 422, and a third partition 423 extending horizontally from top to bottom. The first partition 421 is provided with an upper socket 424 that matches the outer diameter of the heat shrink tubing, and the second partition 422 is provided with a lower socket 425 that matches the outer diameter of the wire 6. The upper socket 424 forms the upper section of the wire slot, and the lower socket 425 forms the lower section of the wire slot. The upper side surface of the second partition 422 forms a step surface between the upper and lower sections of the wire slot, and the upper side surface of the third partition 423 forms the bottom surface of the wire slot. This structure facilitates processing and manufacturing. After the wire 6 and heat shrink tubing are installed, workers can see them, and sensors can also automatically detect them to prevent the heat shrink tubing or wire 6 from being missing.

[0028] The first partition 421 is provided with a plurality of upper insertion holes 424 linearly spaced along the conveying direction, and the second partition 422 is provided with a plurality of lower insertion holes 425 linearly spaced along the conveying direction. The upper insertion holes 424 and the lower insertion holes 425 are coaxially arranged in a mutually opposite relationship. A plurality of vertically extending baffles 426 are fixedly disposed between the first partition 421 and the second partition 422. Adjacent baffles 426 form heat shrink tube guide channels that communicate with the upper insertion holes 424 and the lower insertion holes 425. The heat shrink tube guide channels and the upper insertion holes 424 together form the upper section of the wire slot. The baffles 426 guide the heat shrink tube, facilitating smooth insertion of the wire 6 into the guide holes 425 after insertion.

[0029] The rack 1 is also provided with a wire 6 placement box and a heat shrink tubing placement box, which are respectively arranged on both sides of the vertical conveying direction of the heat drying carrier 4. The wire 6 placement box and the heat shrink tubing placement box are respectively placed with the wire 6 and the heat shrink tubing to be heat-shrunk. The wire 6 and the heat shrink tubing are placed in the wire 6 placement box and the heat shrink tubing placement box in advance, respectively, to facilitate the installation of the heat shrink tubing and the wire 6 online. The wire 6 and the heat shrink tubing can be placed in the heat drying carrier 4 manually or automatically by a robotic arm.

[0030] The frame 1 is also provided with a hot air temperature sensor, which can sense the temperature of the hot air blown to the hot drying carrier 4. The hot air temperature sensor is connected to the controller via wires and communicates with the controller, transmitting the hot air temperature data blown to the hot drying carrier 4 to the controller. The hot air temperature sensor can detect the temperature of the hot air blown out by the hot air blower 2. The controller controls the temperature of the hot air and the power of the hot air blower 2 based on the detection, ensuring that the hot air blower 2 stably heats the heat shrink tubing so that the heat shrink tubing is tightly wrapped around the wire. This is an equivalent replacement structure that can be easily thought of by those skilled in the art based on this patent and falls within the scope of protection of this patent.

Claims

1. An automatic heat shrink tube machine, characterized in that: The invention comprises a frame (1), a hot air blower (2), a conveying device (3), a hot drying carrier (4) and a controller, wherein the hot air blower is fixedly mounted on the frame and can blow hot air toward the hot drying carrier entering directly below it, and the conveying device can continuously convey the hot drying carrier forward so that each hot drying carrier passes directly below the hot air blower one by one, and the controller controls the operation of the hot air blower and the conveying device, and the hot drying carrier comprises a positioning base (41) and a wire bracket (42), and the wire bracket is fixedly mounted on the positioning base, and the wire bracket is provided with a wire slot with an upper section inner diameter larger than a lower section inner diameter, and a heat shrink tube to be heat shrunk can be inserted into the upper section of the wire slot, and the lower end surface of the heat shrink tube is stopped on the step surface between the upper section and the lower section of the wire slot, and the wire can be inserted into the heat shrink tube and the lower section of the wire slot, and the lower end surface of the wire (6) is stopped on the bottom surface of the lower end of the wire slot.

2. The automatic heat shrink tube drying machine according to claim 1, characterized in that: The conveying device includes a sprocket (31), a chain (32) and a servo motor (33), at least two sprockets are mounted on a frame and can rotate around a horizontal rotation axis, an annular chain is sleeved on the outer side of the circumference of each sprocket, and the sprocket and the chain are engaged and driven, the positioning base of the hot drying carrier is fixedly mounted on the chain, a plurality of hot drying carriers are arranged at intervals along the extension direction of the chain, and the servo motor drives one sprocket to rotate.

3. The automatic heat shrink tube drying machine according to claim 2, characterized in that: A finished product collection box (7) is also provided. The finished product collection box is located below the bend where the chain turns from top to bottom. The wires that have been shrunk by the heat shrink tube in the heat drying carrier slide out of the wire slot of the heat drying carrier as the heat drying carrier tilts. The finished product collection box can receive the wires that fall from the heat drying carrier.

4. The automatic heat shrink tube drying machine according to claim 3, characterized in that: The frame is also provided with an inclined slide (8), the lower end of which is directly connected to the opening of the finished product collection box K, and the upper end of which is located below the bend where the chain turns from top to bottom. The wires dropped from the hot drying carrier slide down along the inclined slide and enter the finished product collection box.

5. The automatic heat shrink tube drying machine according to claim 2, characterized in that: The frame is also provided with a chain tension adjustment device, which includes an adjustment slider (9) and a slider driving device (10). The adjustment slider is mounted on the frame and can slide along the extension direction of the chain. The slider driving device drives the adjustment slider to slide and change its position on the frame. A sprocket is mounted on the adjustment block and can rotate around a horizontal rotation axis. The sprocket can adjust the tension of the chain by changing the position of the adjustment slider.

6. The automatic heat shrink tube drying machine according to claim 2, characterized in that: The frame is also provided with a carrier slideway (11), and the hot drying carrier can slide forward along the carrier slideway, and the hot air blower is located directly above the carrier slideway.

7. The automatic heat shrink tube drying machine according to claim 1, characterized in that: The wire support is provided with a first partition (421), a second partition (422) and a third partition (423) extending horizontally from top to bottom. The first partition is provided with an upper plug hole (424) matching the outer diameter of the heat shrink tube, and the second partition is provided with a lower plug hole (425) matching the outer diameter of the wire. The upper plug hole forms the upper section of the wire slot, and the lower plug hole forms the lower section of the wire slot. The upper side surface of the second partition forms a step surface between the upper section and the lower section of the wire slot, and the side surface of the third partition forms the bottom surface of the wire slot.

8. The automatic heat shrink tube drying machine according to claim 7, characterized in that: The first partition is provided with a plurality of upper jacks arranged linearly and spaced apart along the conveying direction, and the second partition is provided with a plurality of lower jacks arranged linearly and spaced apart along the conveying direction, the upper jacks and the lower jacks are arranged coaxially opposite to each other, and a plurality of vertically extending baffles (426) are fixedly provided between the first partition and the second partition, and heat shrink tube guide channels connected to the upper jacks and the lower jacks are formed between adjacent baffles, and the heat shrink tube guide channels and the upper jacks together form the upper section of the wire slot.

9. The automatic heat shrink tube drying machine according to claim 1, characterized in that: The rack is also provided with a wire placement box and a heat shrink tube placement box, which are respectively arranged on both sides of the vertical conveying direction of the hot drying carrier, and the wire placement box and the heat shrink tube placement box are respectively placed with wires and heat shrink tubes to be heat shrunk.

10. The automatic heat shrink tube drying machine according to claim 1, characterized in that: The rack is also provided with a hot air temperature sensor, which can sense the temperature of the hot air blown to the hot drying carrier. The hot air temperature sensor is connected to the controller through wires for communication, and transmits the hot air temperature data blown to the hot drying carrier to the controller.

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