Heat drying device for heat shrink tubing

Abstract

The utility model provides a heat drying device for a heat shrink tube, which relates to the field of heat drying devices and comprises a heat drying oven, a metal conveying belt is arranged in the heat drying oven, a heating device is arranged in the metal conveying belt, a heating cover is arranged on the upper side of the metal conveying belt, and the upper end of the heating cover is connected with a heat drying machine and an electric push rod. And meanwhile, outer supporting rods are connected to the two sides of the heating cover, a heat preservation assembly is arranged on the lower sides of the outer supporting rods, and the heat preservation assembly is installed on the inner side of the hot drying oven and located on the upper side of the metal conveying belt. According to the utility model, the problems that the temperature cannot be rapidly raised and the heating is not uniform due to the sealing deviation of the existing heat drying device for the heat shrink tube are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat drying devices, in particular to a heat drying device for a heat shrink tube. Background Art

[0002] Heat shrink tubing is a specialized polyolefin-based heat-shrink tubing, also known as EVA. It's made from a high-quality, soft, cross-linked polyolefin outer layer and a hot-melt adhesive inner layer. The outer layer offers insulation, corrosion resistance, and abrasion resistance, while the inner layer has a low melting point, provides a waterproof seal, and offers high adhesion. After the heat shrink tubing is assembled with the wires and terminal blocks, it needs to be baked in an oven to shrink the tubing around the wires.

[0003] After searching, the prior art (publication number: CN219667213U) records "a heat shrink tubing drying device, comprising a heat drying assembly; the heat drying assembly comprises: a conveyor belt, a top of which is fixedly connected to an oven; a heat drying machine disposed on the top of the oven; a conveying assembly disposed in the oven; the conveying assembly comprises: a first pipe disposed on the top surface of the oven interior; a fixing block; when the heat shrink tubing is transported, the heat drying machine is turned on, hot air is discharged through multiple air outlets, and directly contacts the heat shrink tubing, thereby performing a heat drying process on the heat shrink tubing; after the hot air contacts the heat shrink tubing, it stays in the oven, and the heat shrink tubing is continuously dried twice, thereby improving the drying efficiency, facilitating the heat shrink tubing drying process, and enabling the hot air output by the heat drying machine to directly act on multiple positions of the heat shrink tubing, so that the heat shrink tubing is heated evenly, thereby solving the problem that the existing heat shrink tubing drying device does not have a good uniform drying function."

[0004] Although the heat shrink tube drying device in the prior art has achieved a relatively good uniform drying function, it still has some shortcomings: the conveyor belt involved in the existing heat shrink tube drying device must have a notch on the side wall of the oven when passing through the oven. Therefore, when blowing air, part of the hot air is dissipated through the notch, resulting in a slow temperature increase inside the oven, which reduces the drying efficiency. Secondly, the air outlet involved can only blow air from one direction of the heat shrink tube, and the temperature inside the oven cannot be maintained. Therefore, the heat shrink tube is heated unevenly, which may lead to poor wrapping effect on cable connector terminals, etc. Utility Model Content

[0005] In order to overcome the defects of the existing technology, a heat shrink tube drying device is now provided to solve the problem of sealing deviation in the existing heat shrink tube drying device, which leads to the inability to quickly increase the temperature and the problem of uneven heating.

[0006] To achieve the above-mentioned purpose, a heat shrink tube drying device is provided, comprising: a heat oven, a metal conveyor belt is provided inside the heat oven, a heating device is provided inside the metal conveyor belt, and a heating cover is provided on the upper side of the metal conveyor belt, the upper end of the heating cover is connected to a heat dryer and an electric push rod, and outer support rods are connected on both sides of the heating cover, an insulation component is provided on the lower side of the outer support rod, and the insulation component is installed on the inner side of the heat oven, and the insulation component is located on the upper side of the metal conveyor belt.

[0007] Furthermore, through holes are provided on the left and right side walls of the hot oven, and the metal conveyor belt passes through the through holes, and a gap is provided between the upper side of the metal conveyor belt and the upper wall of the through hole.

[0008] Furthermore, the heat preservation component includes a pin shaft rotatably connected to the inner wall of the hot oven, and a connecting rod and a gate plate are connected to the outer side of the pin shaft, and the connecting rod and the inner wall of the hot oven are connected by a spring.

[0009] Furthermore, the outer end of the connecting rod is connected to a roller, and the roller is located on the lower side of the outer support rod, and the width of the outer support rod is greater than the thickness of the roller.

[0010] Furthermore, the heating device includes a connecting shaft fixed to the inner wall of the hot oven, and a heating pipe is sleeved on the outer side of the connecting shaft, and a heat conducting pipe is rotatably sleeved on the outer side of the heating pipe.

[0011] Furthermore, an observation window is provided on the front side of the hot oven, and a temperature controller is provided on the rear side of the hot oven, and the temperature controller is electrically connected to the heating tube.

[0012] Furthermore, the air outlet end of the heat dryer is connected to a telescopic pipe, and the telescopic pipe is inserted into the interior of the heat dryer, and the lower end of the telescopic pipe is connected to a horizontal pipe, and the lower end of the horizontal pipe is connected to multiple branch pipes.

[0013] Furthermore, the heating cover is configured as a rectangular cover structure with an open lower end, the lower end of the branch pipe is inserted into the interior of the heating cover, and photoelectric sensors are installed on both side outer walls of the heating cover.

[0014] The beneficial effects of the present invention are:

[0015] 1. When in use, the heat shrink tubing passes through the metal conveyor belt and enters the hot oven. When a part of the heat shrink tubing passes the lower side of the heating cover, the photoelectric sensor activates the electric push rod and the hot drying machine, causing the electric push rod to push the heating cover downward to the metal conveyor belt. At the same time, the support rod moves downward to squeeze the connecting rod, and then the gate rotates through the rotation of the pin shaft to block the through-hole of the hot oven wall. At this time, the outflow of hot air inside the hot oven can be reduced. At the same time, the gathering effect of the heating cover allows the heat shrink tubing covered inside to be blown by the higher temperature, thereby improving the hot drying efficiency.

[0016] 2. While drying, the heating device is started through the thermostat to heat the heating tube, and then a heat radiation effect is formed on the lower side of the metal conveyor belt through the heat conduction tube, thereby drying the lower side of the heat shrink tube. Combined with the blowing effect of the heating cover on the upper side, the drying uniformity of the heat shrink tube is enhanced, thereby improving the wrapping quality of the heat shrink tube after heat shrinkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of an embodiment of the utility model.

[0018] Figure 2 It is a partial top view structural diagram of an embodiment of the utility model.

[0019] Figure 3 This is a schematic structural diagram of a heating device according to an embodiment of the present utility model.

[0020] Figure 4 For the embodiment of the utility model Figure 1 Schematic diagram of the structure at point A in the middle.

[0021] In the figure: 1. Hot oven; 11. Observation window; 2. Hot dryer; 21. Telescopic tube; 22. Horizontal tube; 23. Branch tube; 3. Heating hood; 31. Photoelectric sensor; 32. Electric push rod; 33. Outer support rod; 4. Metal conveyor belt; 5. Heating device; 51. Temperature controller; 52. Connecting shaft; 53. Heating tube; 54. Heat conducting tube; 6. Insulation assembly; 61. Connecting rod; 62. Spring; 63. Pin; 64. Gate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Reference Figures 1 to 4 As shown, the utility model provides a heat shrink tube drying device, comprising: a hot oven 1, a metal conveyor belt 4 is provided inside the hot oven 1, and a heating device 5 is provided inside the metal conveyor belt 4, and a heating cover 3 is provided on the upper side of the metal conveyor belt 4, the upper end of the heating cover 3 is connected to the hot dryer 2 and the electric push rod 32, and at the same time, outer support rods 33 are connected on both sides of the heating cover 3, and an insulation component 6 is provided on the lower side of the outer support rod 33, and the insulation component 6 is installed on the inner side of the hot oven 1, and the insulation component 6 is located on the upper side of the metal conveyor belt 4, the left and right side walls of the hot oven 1 are provided with through holes, and the metal conveyor belt 4 passes through the through holes, and a gap is provided between the upper side of the metal conveyor belt 4 and the upper hole wall of the through hole.

[0024] Specifically, both ends of the metal conveyor belt 4 are placed outside the hot oven 1 , and a driving device is connected to either end of the metal conveyor belt 4 , and partitions arranged at equal intervals are provided on the upper side of the metal conveyor belt 4 .

[0025] Specifically, the gap between the upper side of the metal conveyor belt 4 and the through hole facilitates the conveyance of the heat shrink tube, while the lower side of the metal conveyor belt 4 contacts the bottom of the through hole, thereby achieving a partial effect of blocking the outflow of hot air.

[0026] When in use, the heat shrink tube is placed in sections on the metal conveyor belt 4, and the heat shrink tube is between the partitions so that there is a gap between each part of the heat shrink tube. The gap is then identified by the photoelectric sensor 31. When the heat shrink tube between the partitions is completely on the lower side of the heating cover 3, the heat drying process is started.

[0027] like Figure 1 and Figure 4 In the figure, the heat preservation component 6 includes a pin shaft 63 rotatably connected to the inner wall of the hot oven 1, and the outer side of the pin shaft 63 is connected to a connecting rod 61 and a gate plate 64, and the connecting rod 61 and the inner wall of the hot oven 1 are connected by a spring 62, and the outer end of the connecting rod 61 is connected to a roller, and the roller is located on the lower side of the outer support rod 33, and the width of the outer support rod 33 is greater than the thickness of the roller.

[0028] Specifically, the connecting rod 61 and the gate plate 64 are provided with an obtuse angle, and the linkage rotation effect is achieved by the rotation of the pin shaft 63. When the metal conveyor belt 4 is in the conveying state, the heating cover 3 is at a height away from the metal conveyor belt 4, so that under the pulling action of the spring 62, the gate plate 64 rotates inward to open the through hole, thereby facilitating the passage of the heat shrink tube.

[0029] like Figure 2 and Figure 3 In the figure, the heating device 5 includes a connecting shaft 52 fixed to the inner wall of the hot oven 1, and a heating tube 53 is sleeved on the outer side of the connecting shaft 52, and a heat conducting tube 54 is rotatably sleeved on the outer side of the heating tube 53. An observation window 11 is provided on the front side of the hot oven 1, and a thermostat 51 is provided on the rear side of the hot oven 1, and the thermostat 51 is electrically connected to the heating tube 53.

[0030] Specifically, a heating wire (resistance wire) is provided inside the heating tube 53, and a thermocouple is plugged into the rear end thereof. The heating wire is connected to the thermostat 51 through a power line, and the thermocouple is connected to the thermostat 51 at the same time to achieve regulation and control of the heating temperature.

[0031] As a preferred embodiment, by setting up heating tubes 53 and heat-conducting tubes 54, the metal conveyor belt 4 is locally heated when in close contact with multiple groups of heat-conducting tubes 54, thereby facilitating direct contact drying of the heat shrink tube and improving drying efficiency.

[0032] like Figure 1 In the figure, the air outlet end of the hot dryer 2 is connected to a telescopic tube 21, and the telescopic tube 21 is inserted into the interior of the hot dryer 1, and a horizontal tube 22 is connected to the lower end of the telescopic tube 21, and a plurality of branch pipes 23 are connected to the lower end of the horizontal tube 22. The heating cover 3 is set as a rectangular cover structure with an open lower end, and the lower ends of the branch pipes 23 are inserted into the interior of the heating cover 3, and photoelectric sensors 31 are installed on the outer walls of both sides of the heating cover 3.

[0033] As a preferred embodiment, the telescopic tube 21 is provided to facilitate the electric push rod 32 to push the heating cover 3 downward, and the horizontal tube 22 and the branch pipe 23 are used to quickly fill the interior of the heating cover 3 with heated air.

[0034] Specifically, the photoelectric sensor 31 realizes signal recognition of the head and tail ends of each part of the heat shrink tube placed equidistantly on the metal conveyor belt 4, that is, the front-end photoelectric sensor 31 realizes feeding recognition, and cooperates with the feeding recognition of the rear-end photoelectric sensor 31 to synchronously control the pause of the metal conveyor belt 4.

[0035] When in use, the heat shrink tubing passes through the metal conveyor belt and enters the hot oven. When a part of the heat shrink tubing passes the lower side of the heating cover, the photoelectric sensor is used to activate the electric push rod and the heat drying machine, so that the electric push rod pushes the heating cover downward to the metal conveyor belt, and at the same time, the support rod moves downward to squeeze the connecting rod, and then the pin shaft rotates to drive the gate plate to rotate to block the through-hole in the wall of the hot oven. At this time, the outflow of hot air inside the hot oven can be reduced. At the same time, the gathering effect of the heating cover can make the heat shrink tubing covered inside it be subjected to a higher temperature blowing effect, thereby improving the heat drying efficiency. While heat drying is being carried out, the heating device is started by the thermostat to heat the heating tube, and then a heat radiation effect is formed on the lower side of the metal conveyor belt through the heat conduction tube, thereby heat drying the lower side of the heat shrink tubing, and combined with the blowing effect of the heating cover on the upper side, the heat drying uniformity of the heat shrink tubing is enhanced, thereby improving the wrapping quality of the heat shrink tubing after heat shrinkage.

[0036] The heat shrink tube drying device of the utility model can effectively solve the problem of sealing deviation in the existing heat shrink tube drying device, which leads to the inability to quickly increase the temperature and the problem of uneven heating. It is achieved on the basis of the existing heat shrink tube drying device technology, increases the sealing inside the heat oven, facilitates the rapid increase of temperature, and improves the uniform heating effect of the heat shrink tube.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat shrink tube drying device, comprising: A hot oven (1), characterized in that: a metal conveyor belt (4) is provided inside the hot oven (1), a heating device (5) is provided inside the metal conveyor belt (4), and a heating cover (3) is provided on the upper side of the metal conveyor belt (4), the upper end of the heating cover (3) is connected to a hot dryer (2) and an electric push rod (32), and outer support rods (33) are connected to both sides of the heating cover (3), an insulation component (6) is provided on the lower side of the outer support rod (33), and the insulation component (6) is installed on the inner side of the hot oven (1), and the insulation component (6) is located on the upper side of the metal conveyor belt (4).

2. A heat shrink tube drying device according to claim 1, characterized in that: The left and right side walls of the hot oven (1) are provided with through holes, and the metal conveyor belt (4) passes through the through holes, and a gap is provided between the upper side of the metal conveyor belt (4) and the upper wall of the through hole.

3. The heat shrink tube drying device according to claim 1, characterized in that: The heat preservation component (6) includes a pin shaft (63) rotatably connected to the inner wall of the hot oven (1), and a connecting rod (61) and a gate plate (64) are connected to the outer side of the pin shaft (63), and the connecting rod (61) and the inner wall of the hot oven (1) are connected via a spring (62).

4. A heat shrink tube drying device according to claim 3, characterized in that: The outer end of the connecting rod (61) is connected to a roller, and the roller is located on the lower side of the outer support rod (33), and the width of the outer support rod (33) is greater than the thickness of the roller.

5. The heat shrink tube drying device according to claim 1, characterized in that: The heating device (5) comprises a connecting shaft (52) fixed to the inner wall of the hot oven (1), a heating tube (53) is sleeved on the outer side of the connecting shaft (52), and a heat conducting tube (54) is rotatably sleeved on the outer side of the heating tube (53).

6. The heat shrink tube drying device according to claim 1, characterized in that: The front side of the hot oven (1) is provided with an observation window (11), and the rear side of the hot oven (1) is provided with a temperature controller (51), and the temperature controller (51) is electrically connected to the heating tube (53).

7. The heat shrink tube drying device according to claim 1, characterized in that: The air outlet end of the heat drying machine (2) is connected to a telescopic tube (21), and the telescopic tube (21) is inserted into the interior of the heat drying oven (1). A transverse tube (22) is connected to the lower end of the telescopic tube (21), and a plurality of branch tubes (23) are connected to the lower end of the transverse tube (22).

8. The heat shrink tube drying device according to claim 1, characterized in that: The heating cover (3) is configured as a rectangular cover structure with an open lower end, the lower end of the branch pipe (23) is inserted into the interior of the heating cover (3), and photoelectric sensors (31) are installed on both side outer walls of the heating cover (3).

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