Thermal shrinkage device for cable thermal shrinkage protective sleeve and use method of thermal shrinkage device

Abstract

The invention relates to the technical field of cable processing equipment, and particularly discloses a thermal shrinkage device for a cable thermal shrinkage protective sleeve and a use method of the thermal shrinkage device. The thermal shrinkage device comprises a rack, a thermal shrinkage device and an electric controller; a linear sliding mechanism is arranged on a workbench of the rack in the length direction, and a wire clamp is at least arranged at the front end in the length direction. The thermal shrinkage device is connected to the linear sliding mechanism, and the linear sliding mechanism drives the thermal shrinkage device to do linear reciprocating motion in the length direction of the workbench. And a cable is clamped and fixed on the workbench through the cable clamp and is axially arranged in a heating cylinder of the thermal shrinkage device in a penetrating manner. The forming structure is simple, high-degree automatic thermal shrinkage processing can be achieved, and high-quality thermal shrinkage forming of the thermal shrinkage protection sleeve on the cable is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of cable processing equipment, in particular to a heat shrink device for a cable heat shrink protection sleeve, and a method for using the heat shrink device. Background Art

[0002] The design of wires and cables often involves the formation of heat-shrinkable protective tubing within the cable structure. Heat-shrinkable tubing is a specialized polyolefin-based heat-shrinkable tubing typically used as an insulating protective layer within wire and cable structures. Heat-shrinkable tubing is formed within the cable structure by applying heat to shrink it onto the cable structure, a process known as heat shrinking. This requires heat shrinking equipment.

[0003] Equipment for heat shrinking cable heat shrinkable protective sleeves commonly has a handheld structure or a routing structure.

[0004] Handheld structures, such as those disclosed in Chinese patent documents titled "A Heat Shrink Tube Heat Shrinking Device," with publication number CN208841889 U and publication date May 10, 2019, require handheld operation, resulting in high labor intensity and poor heat shrinkage quality stability, making them unsuitable for mass production of cables.

[0005] For example, a Chinese patent document titled "A Heat Shrinkable Tubing Heat Shrinking Device for Cable Processing," with publication number CN 205944717 U and publication date February 8, 2017, discloses a wiring-type structure. This technology requires the cable to be passed axially through a heating tube, where it remains axially routed while the heating device remains stationary. This means the entire heating device incorporates both the heat shrinking and wiring equipment, resulting in a bulky and complex overall structure. Furthermore, because the heat shrinkable sleeve is first applied to the cable before the heat shrink process, maintaining relative stability between the cable and the heat shrinkable sleeve during routing increases the difficulty of cable clamping.

[0006] Therefore, in view of the particularity of the heat shrinkage processing of cable heat shrinkable protective sleeves and the technical deficiencies of existing heat shrinkage equipment, it is necessary to design more reasonable and feasible heat shrinkage equipment to meet the technical requirements of high-quality heat shrinkage processing of heat shrinkable protective sleeves on the outside of cables. Summary of the Invention

[0007] The technical purpose of the present invention is to provide a cable heat shrinking protective sleeve heat shrinking device with a simple structure, high degree of automation, and easy high-quality heat shrinking processing, as well as a method for using the heat shrinking device, in view of the particularity of the heat shrinking processing of the above-mentioned cable heat shrinking protective sleeve and the shortcomings of the existing technology.

[0008] The technical purpose of the present invention is achieved through the following technical solution: a heat shrink device for a heat shrinkable protective sleeve for a cable, comprising a frame, a heat shrink device and an electrical controller; On the working table of the frame, a linear sliding mechanism is arranged along the length direction, and a wire clamp is arranged at least at the front end in the length direction; The heat shrink device is connected to the linear sliding mechanism, and the linear sliding mechanism drives the heat shrink device to perform linear reciprocating motion in the longitudinal direction of the workbench; The cable is clamped and fixed on the workbench by the wire clamp and is axially inserted into the heating cylinder of the heat shrink device.

[0009] As one of the preferred technical solutions, the heat shrink device further includes a first wire mechanism arranged on the workbench and at the rear end of the heat shrink device; The first guide mechanism comprises an uphill section wheel frame, an uphill section roller and a first traveling wheel; The uphill section wheel frame is arranged obliquely on the workbench, and one end of the uphill section wheel frame adjacent to the heat shrink device is connected to the heating tube in a detachable structure, and one end of the uphill section wheel frame away from the heat shrink device is lower than the heating tube and close to the workbench surface; There are multiple uphill rollers, which are arranged at intervals along the uphill wheel frame in the cable supporting direction to support the cables installed in the heating cylinder; The first traveling wheel is fixed to the bottom of the uphill section wheel frame, supports the uphill section wheel frame on the workbench, and moves on the workbench in coordination with the linear reciprocating motion of the heat shrink device; The cable supported and guided by the first guide mechanism is installed in the heating cylinder with a ring space matching structure.

[0010] Furthermore, the first guide wire mechanism further comprises a first horizontal section wheel frame and a first horizontal section positioning roller; The first horizontal section wheel frame is connected to the uphill section wheel frame at an end adjacent to the heat shrink device. The first horizontal section wheel frame is arranged horizontally relative to the workbench. The first horizontal section wheel frame and the uphill section wheel frame are matched at an obtuse angle. The first horizontal section wheel frame is connected to the heating cylinder in a detachable structure. There is at least one first horizontal section positioning roller, which is assembled along the horizontal width direction of the first horizontal section wheel frame and is spaced apart from the uphill section roller on the uphill section wheel frame in the cable supporting direction; the first horizontal section positioning roller has an axial waist with an annular concave positioning groove, and the cable installed in the heating cylinder is guided and positioned through the positioning groove on the first horizontal section positioning roller.

[0011] As one of the preferred technical solutions, the heat shrink device further includes a second wire mechanism arranged on the workbench and located at the front end of the heat shrink device; The second guide wire mechanism comprises a downhill section wheel frame, a downhill section roller and a second traveling wheel; The downhill section wheel frame is arranged obliquely on the workbench, and one end of the downhill section wheel frame adjacent to the heat shrink device is connected to the heating tube in a detachable structure, and one end of the downhill section wheel frame away from the heat shrink device is lower than the heating tube and close to the workbench surface; There are multiple downhill rollers, which are arranged at intervals along the downhill wheel frame in the cable supporting direction to support the cables installed in the heating cylinder; The second traveling wheel is fixed to the bottom of the downhill section wheel frame, supports the downhill section wheel frame on the workbench, and moves on the workbench in coordination with the linear reciprocating motion of the heat shrink device; The cable supported and guided by the second guide mechanism is installed in the heating cylinder with a ring space matching structure.

[0012] Furthermore, the second guide wire mechanism further comprises a second horizontal section wheel frame and a second horizontal section positioning roller; The second horizontal section wheel frame is connected to the end of the downhill section wheel frame adjacent to the heat shrink device, the second horizontal section wheel frame is arranged horizontally relative to the workbench, the second horizontal section wheel frame and the downhill section wheel frame are matched at an obtuse angle, and the second horizontal section wheel frame is connected to the heating cylinder in a detachable structure; There is at least one second horizontal section positioning roller, which is assembled along the transverse width direction of the second horizontal section wheel frame and is spaced apart from the downhill section roller on the downhill section wheel frame in the cable supporting direction; the second horizontal section positioning roller has an axial waist with an annular concave positioning groove, and the cable installed in the heating cylinder is guided and positioned through the positioning groove on the second horizontal section positioning roller.

[0013] As one of the preferred technical solutions, the heat shrink device has a heating tube with a sandwich structure, and a first hot air gun, a second hot air gun and a temperature sensor connected to the heating tube; The inner wall of the heating tube is provided with a plurality of heating holes for inputting heat, and these heating holes are divided into a first temperature zone and a second temperature zone in the axial direction of the heating tube; when the cable is heat-shrinked, the heat in the first temperature zone of the cable that is heat-shrinked first is lower than the heat in the second temperature zone of the cable that is heat-shrinked later; The first hot air gun is connected to the first temperature zone of the heating tube, and the second hot air gun is connected to the second temperature zone of the heating tube. The first hot air gun and the second hot air gun are electrically connected to the electrical controller respectively, and the heating actions of the first hot air gun and the second hot air gun are controlled by the electrical controller respectively. There are two groups of temperature measuring sensors, which are electrically connected to the electrical controller respectively, and are used to measure the temperature of the first temperature zone and the second temperature zone of the heating tube and provide feedback to the electrical controller.

[0014] Furthermore, the heating tube of the heat shrink device has a C-shaped contour structure in the circumferential direction, and the opening area is opposite to the linear sliding mechanism.

[0015] As one of the preferred technical solutions, the heating tube of the heat shrink device is a stainless steel structure.

[0016] As one of the preferred technical solutions, the linear sliding mechanism is a synchronous belt linear sliding structure, which comprises a driving wheel and a driven wheel mounted on a frame at a distance, a linear guide mounted on the frame between the driving wheel and the driven wheel, a linear slider movably mounted on the linear guide, a synchronous belt sleeved between the driving wheel and the driven wheel, a servo motor driving the driving wheel to rotate, limit switches mounted at both ends of the linear guide, and an origin switch mounted between the limit switches at both ends; The heat shrink device is connected to the synchronous belt and the linear slider through a bracket, and can slide linearly along the linear guide rail under the drive of the synchronous belt.

[0017] A method for using the above-mentioned cable heat shrink protection sleeve heat shrink device, the method comprising the following process steps: Step 1. Use the linear slide mechanism to return the heat shrink device to its original position on the workbench, at the front wire clamp. Step 2. Use the electrical controller to set the operating temperature of the heat shrink unit and the travel speed of the linear slide mechanism. Step 3. Arrange the cables to be processed along the length of the workbench and secure them with the cable clamps at the front of the workbench. Thread them into the heat shrink tubing. Step 4. Start the heat shrink unit and the linear slide mechanism. The linear slide mechanism drives the heat shrink unit to move from front to back across the workbench at a set speed, shrinking the heat shrink sleeves of the cables being processed sequentially. After the linear sliding mechanism drives the heat shrink device to complete the current heat shrink processing stroke from front to back, the linear sliding mechanism drives the heat shrink device to move from back to front on the workbench and reset, waiting for the next heat shrink processing stroke.

[0018] The beneficial technical effect of the present invention is: the above technical measures are aimed at the particularity of the heat shrinkage processing of the above-mentioned cable heat shrinkage protective sleeve, and the heat shrink device is assembled on the workbench of the frame through a linear sliding mechanism. When the cable is processed, the cable is basically kept in a relatively fixed state on the workbench, and the linear sliding mechanism drives the heat shrink device to perform linear displacement along the length direction of the cable to realize heat shrinkage processing. The molding structure of the entire heat shrinkage processing equipment is simple and can realize a high degree of automated heat shrinkage processing, which is conducive to high-quality heat shrinkage molding of the heat shrinkage protective sleeve on the cable.

[0019] In the above technical measures, in order to adapt to the arrangement of the cables on the workbench and the linear reciprocating motion of the heat shrink device along the length of the cable, corresponding specific structural wire mechanisms are arranged at both axial ends of the heating tube of the heat shrink device. Under the action of the corresponding wire mechanism, it can ensure that the cable is basically installed in the heating tube along the axial position, so that the heat shrinkage heating of the heating tube is basically uniform on the periphery of the cable, which is conducive to further improving the heat shrinkage quality of the heat shrinkage protective sleeve on the cable, and the heat shrink device has good protection for the cable during the linear reciprocating motion and basically does not damage the outer wall structure of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 for Figure 1 A partial enlarged view of the .

[0022] Figure 3 for Figure 1 Top view of .

[0023] Figure 4 for Figure 3 A partial enlarged view of the .

[0024] Figure 5 for Figure 1 Left view of .

[0025] Figure 6 for Figure 5 A partial enlarged view of the .

[0026] The meaning of the codes in the figure are: 1—frame; 11—workbench; 2—linear sliding mechanism; 3—heat shrinkage device; 31—heating cylinder; 32—heating hole; 33—first hot air gun; 34—second hot air gun; 4—first wire mechanism; 41—uphill section wheel frame; 42—uphill section roller; 43—first travel wheel; 44—first horizontal section wheel frame; 45—first horizontal section positioning roller; 5—second wire mechanism; 51—downhill section wheel frame; 52—downhill section roller; 53—second travel wheel; 54—second horizontal section wheel frame; 55—second horizontal section positioning roller; 6—wire clamp; 7—electrical controller. DETAILED DESCRIPTION

[0027] The present invention relates to the technical field of cable processing equipment, specifically a heat shrink device for cable heat shrink protection sleeves, and a method for using the heat shrink device. The following describes the main technical solutions of the present invention in detail with reference to a plurality of embodiments. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 The technical solution of the present invention is clearly and in detail explained; although other embodiments are not separately drawn with drawings, their main structures can still refer to the drawings of Example 1.

[0028] It should be noted that the drawings of the present invention are schematic and have been simplified to clarify the technical objectives of the present invention and to avoid obscuring the present invention's contribution to the prior art. Furthermore, expressions such as "approximately" and "substantially" regarding quantities or fitting relationships below are intended to allow for reasonable assembly and processing errors within the industry and do not literally represent absolute quantities or fitting relationships.

[0029] Example 1 See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the shrinking device of the present invention includes a frame 1, a linear sliding mechanism 2, a heat shrink device 3, a first wire mechanism 4, a second wire mechanism 5 and an electrical controller 7.

[0030] Specifically, the frame 1, serving as a support structure, is a frame-like structure with length, width, and height. To accommodate cable processing, the frame 1 is relatively long, typically over ten meters. The height and width of the frame 1 are sufficient to meet processing requirements. Atop the frame 1 is a flat workbench 11 for clamping cables and arranging the linear slide mechanism 2, heat shrink device 3, first guide wire mechanism 4, and second guide wire mechanism 5.

[0031] The linear sliding mechanism 2 is assembled on one side of the workbench 11 in the width direction of the frame 1, along the length direction of the workbench 11, so that the spatial structure of the workbench 11 is basically L-shaped in the width direction. Under normal circumstances, the effective stroke of the linear sliding mechanism 2 is 10 meters.

[0032] To ensure that the linear sliding mechanism 2 drives the heat shrink device 3 to move accurately and smoothly, the linear sliding mechanism 2 adopts an automated, precise linear displacement synchronous belt linear sliding structure. The linear sliding mechanism 2 comprises a driving wheel and a driven wheel mounted on the frame 1 at intervals along the length of the workbench 11, a linear guide mounted on the frame 1 between the driving wheel and the driven wheel, a linear slider movably mounted on the linear guide, a synchronous belt mounted between the driving wheel and the driven wheel, a servo motor that drives the driving wheel to rotate, limit switches mounted at both ends of the linear guide, and an origin switch mounted between the limit switches at both ends. The heat shrink device 3 of the following structure is connected to the synchronous belt and the linear slider via a bracket on the back side. Driven by the synchronous belt, the heat shrink device 3 can slide linearly along the linear guide. The limit switches at both ends of the linear guide and the origin switch between the limit switches at both ends are electrically connected to the electrical controller 7 to provide feedback to the electrical controller 7 on the position of the linear slider on the linear guide. The servo motor is electrically connected to the electrical controller 7 and drives the driving wheel to rotate under the command of the electrical controller 7.

[0033] To ensure the device structure is lightweight while ensuring structural rigidity, the linear guide rails and linear sliders of the linear sliding mechanism 2 are made of high-strength aluminum alloy. Furthermore, to ensure the device structure is rigid while preventing rust, the frame 1 is made of stainless steel.

[0034] The heat shrink device 3 comprises a heating tube 31 with a sandwich structure, and a first hot air gun 33 , a second hot air gun 34 and a temperature sensor connected to the heating tube 31 .

[0035] More specifically, the inner wall of the heating tube 31 is provided with a number of heating holes 32 for inputting heat. In order to ensure that the heat shrink protective sleeve is reliably heated during the heat shrink process and to ensure the quality of the heat shrink process, these heating holes 32 on the inner wall of the heating tube 31 are divided into a first temperature zone and a second temperature zone in the axial direction of the heating tube 31. During the process of heat shrinking the cable, the heat in the first temperature zone of the first heat shrinking heating cable is lower than the heat in the second temperature zone of the second heat shrinking heating cable, thereby forming a high and low gradient coordination of heating temperatures, ensuring that the heat shrink protective sleeve is heated at two levels and fully heated to form reliable heat shrinkage. The first hot air gun 33 is connected to the first temperature zone of the heating tube 31, and the second hot air gun 34 is connected to the second temperature zone of the heating tube 31. The first hot air gun 33 and the second hot air gun 34 are respectively electrically connected to the electrical controller 7, and the heating actions of the first hot air gun 33 and the second hot air gun 34 are respectively controlled by the electrical controller 7. There are two groups of temperature sensors, which are arranged on the outer wall of the heating tube 31 and correspond to the first temperature zone and the second temperature zone of the heating tube 31; the two groups of temperature sensors are electrically connected to the electrical controller 7 respectively, and are used to perform corresponding temperature measurement on the first temperature zone and the second temperature zone of the heating tube 31, and provide feedback to the electrical controller 7. According to the temperature information fed back by the corresponding temperature sensors, the heating temperature to be set is input into the electrical controller 7 according to the heat shrink process.

[0036] To facilitate cable insertion and observation of the shrinking status, the heating tube 31 of the heat shrink unit 3 has a C-shaped circumferential profile, with the opening facing away from the linear slide mechanism 2 and toward the manual work surface. The heating tube 31 of the heat shrink unit 3 is made of high-temperature-resistant stainless steel.

[0037] The heat shrink device 3 of the above structure is connected to an outwardly extending bracket on the side of the heating tube 31 opposite to the opening. The heating tube 31 is connected to the synchronous belt and linear slider of the above-mentioned linear sliding mechanism through the bracket. Driven by the synchronous belt, the heat shrink device 3 can slide linearly along the linear guide rail.

[0038] The heating tube 31 assembled on the workbench 11 with the above structure is basically in a suspended arrangement structure, and there is a height difference between the heating tube 31 and the workbench 11. Since the cable being processed is clamped on the workbench 11, based on the matching relationship between the heating tube 31 and the workbench 11, when the cable is axially inserted into the heating tube 31, there is a phenomenon that the cable overlaps the bottom of the heating tube 31 to form a partial contact and partial annular gap fit, and cannot form a basic coaxial fit. For this reason, a first wire mechanism 4 and a second wire mechanism 5 are connected to the axial ends of the heating tube 31 to support the cable and ensure that the cable maintains a basically coaxial fit when inserted into the heating tube 31.

[0039] More specifically, the first wire mechanism 4 is arranged at the end (i.e., the rear end) of the heat shrinking travel direction of the heating cylinder 31, and it has an uphill section wheel frame 41, an uphill section roller 42, a first walking wheel 43, a first horizontal section wheel frame 44 and a first horizontal section positioning roller 45.

[0040] The widthwise cross-sectional profile of the uphill section wheel frame 41 is essentially U-shaped. The uphill section wheel frame 41 is arranged diagonally on the workbench 11. The end of the uphill section wheel frame 41 adjacent to the heat shrink unit 3 is connected to the first horizontal section wheel frame 44, forming a removable connection with the heating cylinder 31. The end of the uphill section wheel frame 41 distal to the heat shrink unit 3 is lower than the heating cylinder 31 and closer to the surface of the workbench 11. That is, with the heat shrink unit 3 as a reference, the distal end of the uphill section wheel frame 41 is lower than the proximal end, thus forming an oblique arrangement. Multiple uphill section rollers 42 are arranged at intervals along the cable support direction of the uphill section wheel frame 41 and located within the groove of the uphill section wheel frame 41 to support the cables installed in the heating cylinder 31. The first running wheel 43 is fixed to the bottom of the uphill section wheel frame 41, supporting the uphill section wheel frame 41 on the workbench 11 and moving on the workbench 11 in conjunction with the linear reciprocating motion of the heat shrink unit 3. Similarly, the widthwise cross-sectional profile of the first horizontal section wheel frame 44 is substantially U-shaped. The first horizontal section wheel frame 44 is connected to the end of the uphill section wheel frame 41 adjacent to the heat shrink unit 3. The first horizontal section wheel frame 44 is arranged horizontally relative to the workbench 11, and the first horizontal section wheel frame 44 and the uphill section wheel frame 41 are aligned at an obtuse angle. The end of the first horizontal section wheel frame 44 adjacent to the heat shrink unit 3 is detachably connected to the heating cylinder 31. There is one first horizontal section positioning roller 45, which is assembled along the horizontal width direction of the first horizontal section wheel frame 44 and is spaced apart from the uphill section roller 42 on the uphill section wheel frame 41 in the cable supporting direction; the first horizontal section positioning roller 45 has an axial waist with an annular concave positioning groove, and the cable installed in the heating tube 31 is guided and positioned through the positioning groove on the first horizontal section positioning roller 45. When the first wire mechanism 4 and the heating tube 31 form a detachable assembly, the positioning groove on the first horizontal section positioning roller 45 is basically close to the axial center position of the heating tube 31.

[0041] When guiding and supporting the cable, the cable on the workbench 11 is smoothly guided and supported by the uphill section roller 42 on the above-mentioned uphill section wheel frame 41, and enters the positioning groove of the first horizontal section positioning roller 45 on the first horizontal section wheel frame 44, so that the cable supported and guided by the first guide mechanism 4 is installed in the heating tube 31 with an annular space matching structure to avoid local contact matching.

[0042] The second wire mechanism 5 is arranged at the reset direction end (i.e., the front end) of the heating cylinder 31, and has a downhill section wheel frame 51, a downhill section roller 52, a second running wheel 53, a second horizontal section wheel frame 54 and a second horizontal section positioning roller 55.

[0043] The widthwise cross-sectional profile of the downhill section wheel frame 51 is essentially U-shaped. The downhill section wheel frame 51 is arranged diagonally on the workbench 11. The end of the downhill section wheel frame 51 adjacent to the heat shrink unit 3 is connected to the second horizontal section wheel frame 54, forming a removable connection with the heating tube 31. The end of the downhill section wheel frame 51 distal from the heat shrink unit 3 is lower than the heating tube 31 and closer to the surface of the workbench 11. That is, with the heat shrink unit 3 as a reference, the distal end of the downhill section wheel frame 51 is lower than the proximal end, thus forming an oblique arrangement. Multiple downhill section rollers 52 are arranged at intervals along the cable support direction of the downhill section wheel frame 51 and located within the groove of the downhill section wheel frame 51 to support the cables installed in the heating tube 31. The second travel wheel 53 is fixed to the bottom of the downhill section wheel frame 51, supporting the downhill section wheel frame 51 on the workbench 11 and moving on the workbench 11 in conjunction with the linear reciprocating motion of the heat shrink unit 3. Similarly, the widthwise cross-sectional profile of the second horizontal section wheel frame 54 is substantially U-shaped. The second horizontal section wheel frame 54 is connected to the end of the downhill section wheel frame 51 adjacent to the heat shrink unit 3. The second horizontal section wheel frame 54 is arranged horizontally relative to the workbench 11, and the second horizontal section wheel frame 54 and the downhill section wheel frame 51 are aligned at an obtuse angle. The end of the second horizontal section wheel frame 54 adjacent to the heat shrink unit 3 is detachably connected to the heating cylinder 31. There is one second horizontal section positioning roller 55, which is assembled along the horizontal width direction of the second horizontal section wheel frame 54, and is spaced apart from the downhill section roller 52 on the downhill section wheel frame 51 in the cable supporting direction; the second horizontal section positioning roller 55 has an axial waist with an annular concave positioning groove, and the cable installed in the heating tube 31 is guided and positioned through the positioning groove on the second horizontal section positioning roller 55. When the second wire mechanism 5 and the heating tube 31 form a detachable assembly, the positioning groove on the second horizontal section positioning roller 55 is basically close to the axial center position of the heating tube 31.

[0044] When guiding and supporting the cable, the cable in the heating cylinder 31 is guided and supported by the positioning groove of the second horizontal section positioning roller 55 on the above-mentioned second horizontal section wheel frame 54, enters the downhill section roller 52 on the above-mentioned downhill section wheel frame 51, and is smoothly arranged on the workbench 11 through the guidance support of the downhill section roller 52, so that the cable supported and guided by the second guide mechanism 5 is installed in the heating cylinder 31 with a ring space matching structure to avoid local contact matching.

[0045] When heat shrinking cables, the heat shrink device 3 of the aforementioned structure shrinks the cables on the workbench 11 from the front to the back, according to a predetermined origin. The cables remain stationary, while the heat shrink device 3 reciprocates linearly, driven by the linear slide mechanism 2. To prevent the cables from shifting due to friction between the first guide mechanism 4 and the second guide mechanism 5, a cable clamp 6 is arranged at the longitudinal front end of the workbench 11 of the frame 1. The cables passing through the second guide mechanism 5 are clamped and secured by the cable clamp 6.

[0046] In this way, in the heat shrink device of the above structure, the heat shrink unit 3 is driven by the linear sliding mechanism 2 to perform linear reciprocating motion in the longitudinal direction of the workbench 11. The cable is clamped and fixed to the workbench 11 by the wire clamp 6 and axially inserted into the heating cylinder 31 of the heat shrink unit 3.

[0047] The method for using the above-mentioned heat shrink device includes the following process steps: Step 1. Reset the heat shrink device 3 to its origin on the workbench 11 via the linear sliding mechanism 2, at the front end of the wire clamp 6. Step 2. Set the operating temperature of the heat shrink unit 3 and the travel speed of the linear slide mechanism 2 via the electrical controller 7; Preheating the heat shrink device 3 to reach the set working temperature; Step 3. Arrange the cables to be processed along the length of the workbench 11 and clamp them with the cable clamp 6 at the front end of the workbench 11 and install them inside the heating cylinder 31 of the heat shrink device 3; Step 4. Start the preheated heat shrink unit 3 and linear slide mechanism 2. Linear slide mechanism 2 drives the heat shrink unit 3 to move forward and backward on the workbench 11 at a set speed, shrinking the heat shrink sleeves of the cables being processed sequentially. After the linear sliding mechanism 2 drives the heat shrink device 3 to complete the current heat shrink processing stroke from front to back, the linear sliding mechanism 2 drives the heat shrink device 3 to move from back to front on the workbench 11 and reset, waiting for the next heat shrink processing stroke, including replacing the cable or moving the current cable.

[0048] Example 2 The rest of this embodiment is the same as that of embodiment 1, except that: The linear sliding mechanism adopts a screw transmission pair structure, in which the screw of the screw transmission pair is arranged along the length direction of the workbench and can rotate through a bearing assembly. The nut of the screw transmission pair is threadedly connected to the screw and connected to the bracket of the heat shrink device. In this way, during the rotation of the screw, the nut is driven to perform linear reciprocating motion.

[0049] Example 3 The rest of this embodiment is the same as that of embodiment 1, except that: The horizontal section structure of the second wire mechanism is removed, that is, the second horizontal section wheel frame and the second horizontal section positioning roller are removed, but the downhill section wheel frame and the heating cylinder of the heat shrink device are required to be detachably connected, and the highest downhill section roller is positioned at the second horizontal section positioning roller, and the structure of the second horizontal section positioning roller is adopted.

[0050] Example 4 The rest of this embodiment is the same as that of embodiment 1, except that: The horizontal section structure of the first guide wire mechanism is removed, that is, the first horizontal section wheel frame and the first horizontal section positioning roller are removed, but the uphill section wheel frame and the heating cylinder of the heat shrink device are required to be detachably connected, and the highest uphill section roller is positioned at the first horizontal section positioning roller, and the structure of the first horizontal section positioning roller is adopted.

[0051] Example 5 The rest of this embodiment is the same as that of embodiment 1, except that: The heating tube of the heat shrink device has a single temperature zone and is connected to a single hot air gun.

[0052] The above embodiments are only used to illustrate the present invention, rather than to limit it.

[0053] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the above embodiments or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the present invention.

Claims

1. A heat shrink device for a cable heat shrink protective sleeve, comprising a frame (1), a heat shrink device (3) and an electrical controller (7); Its characteristics are: On the workbench (11) of the frame (1), a linear sliding mechanism (2) is arranged along the length direction, and a wire clamp (6) is arranged at least at the front end in the length direction; The heat shrink device (3) is connected to the linear sliding mechanism (2), and the linear sliding mechanism (2) drives the heat shrink device (3) to perform linear reciprocating motion in the length direction of the workbench (11); The cable is clamped and fixed on the workbench (11) by the wire clamp (6), and is axially inserted into the heating cylinder (31) of the heat shrink device (3).

2. The heat shrink device for cable heat shrinkable protective sleeve according to claim 1, characterized in that: The heat shrink device further comprises a first wire mechanism (4) arranged on the workbench (11) and located at the rear end of the heat shrink device (3); The first guide mechanism (4) comprises an uphill section wheel frame (41), an uphill section roller (42) and a first travel wheel (43); The uphill section wheel frame (41) is arranged obliquely on the workbench (11), and one end of the uphill section wheel frame (41) adjacent to the heat shrink device (3) is connected to the heating tube (31) in a detachable structure, and one end of the uphill section wheel frame (41) away from the heat shrink device (3) is lower than the heating tube (31) and close to the surface of the workbench (11); There are a plurality of uphill section rollers (42), which are arranged at intervals along the uphill section wheel frame (41) in the cable supporting direction to support the cables installed in the heating cylinder (31); The first traveling wheel (43) is fixed to the bottom of the uphill section wheel frame (41), supports the uphill section wheel frame (41) on the workbench (11), and moves on the workbench (11) in coordination with the linear reciprocating motion of the heat shrink device (3); The cable supported and guided by the first guide mechanism (4) is installed in the heating cylinder (31) with a ring space matching structure.

3. The heat shrink device for cable heat shrinkable protective sleeve according to claim 2, characterized in that: The first guide wire mechanism (4) further comprises a first horizontal section wheel frame (44) and a first horizontal section positioning roller (45); The first horizontal section wheel frame (44) is connected to the end of the uphill section wheel frame (41) adjacent to the heat shrink device (3), the first horizontal section wheel frame (44) is arranged horizontally relative to the workbench (11), the first horizontal section wheel frame (44) and the uphill section wheel frame (41) are matched at an obtuse angle, and the first horizontal section wheel frame (44) and the heating cylinder (31) are connected in a detachable structure; The first horizontal section positioning roller (45) is at least one and is assembled along the transverse width direction of the first horizontal section wheel frame (44) and is spaced apart from the uphill section roller (42) on the uphill section wheel frame (41) in the cable supporting direction; the first horizontal section positioning roller (45) has an axial waist with an annular concave positioning groove, and the cable installed in the heating cylinder (31) is guided and positioned through the positioning groove on the first horizontal section positioning roller (45).

4. The heat shrink device for cable heat shrinkable protective sleeve according to claim 1 or 2, characterized in that: The heat shrink device further comprises a second wire mechanism (5) arranged on the workbench (11) and located at the front end of the heat shrink device (3); The second guide wire mechanism (5) comprises a downhill section wheel frame (51), a downhill section roller (52) and a second traveling wheel (53); The downhill section wheel frame (51) is arranged obliquely on the workbench (11), and one end of the downhill section wheel frame (51) adjacent to the heat shrink device (3) is connected to the heating tube (31) in a detachable structure, and one end of the downhill section wheel frame (51) away from the heat shrink device (3) is lower than the heating tube (31) and close to the surface of the workbench (11); There are a plurality of downhill section rollers (52), which are arranged at intervals along the downhill section wheel frame (51) in the cable supporting direction to support the cables installed in the heating cylinder (31); The second traveling wheel (53) is fixed to the bottom of the downhill section wheel frame (51), supports the downhill section wheel frame (51) on the workbench (11), and moves on the workbench (11) in coordination with the linear reciprocating motion of the heat shrink device (3); The cable supported and guided by the second guide mechanism (5) is installed in the heating cylinder (31) with a ring space matching structure.

5. The heat shrink device for cable heat shrinkable protective sleeve according to claim 4, characterized in that: The second guide wire mechanism (5) further comprises a second horizontal section wheel frame (54) and a second horizontal section positioning roller (55); The second horizontal section wheel frame (54) is connected to the end of the downhill section wheel frame (51) adjacent to the heat shrink device (3), the second horizontal section wheel frame (54) is arranged horizontally relative to the workbench (11), the second horizontal section wheel frame (54) and the downhill section wheel frame (51) are matched at an obtuse angle, and the second horizontal section wheel frame (54) and the heating cylinder (31) are connected in a detachable structure; The second horizontal section positioning roller (55) is at least one and is assembled along the transverse width direction of the second horizontal section wheel frame (54) and is spaced apart from the downhill section roller (52) on the downhill section wheel frame (51) in the cable supporting direction; the second horizontal section positioning roller (55) has an axial waist with an annular concave positioning groove, and the cable installed in the heating cylinder (31) is guided and positioned through the positioning groove on the second horizontal section positioning roller (55).

6. The heat shrink device for cable heat shrinkable protective sleeve according to claim 1, characterized in that: The heat shrink device (3) comprises a heating tube (31) with a sandwich structure, and a first hot air gun (33), a second hot air gun (34) and a temperature sensor connected to the heating tube (31); The inner wall of the heating tube (31) is provided with a plurality of heating holes (32) for inputting heat, and the heating holes (32) are divided into a first temperature zone and a second temperature zone in the axial direction of the heating tube (31); when the cable is heat-shrunk and heated, the heat in the first temperature zone of the cable that is heat-shrunk first is lower than the heat in the second temperature zone of the cable that is heat-shrunk later; The first hot air gun (33) is connected to the first temperature zone of the heating tube (31), and the second hot air gun (34) is connected to the second temperature zone of the heating tube (31). The first hot air gun (33) and the second hot air gun (34) are electrically connected to the electrical controller (7), respectively. The heating actions of the first hot air gun (33) and the second hot air gun (34) are respectively controlled by the electrical controller (7). There are two groups of temperature measuring sensors, which are electrically connected to the electrical controller (7) respectively, and are used to measure the temperature of the first temperature zone and the second temperature zone of the heating cylinder (31) and provide feedback to the electrical controller (7).

7. The heat shrink device for cable heat shrinkable protective sleeve according to claim 6, characterized in that: The heating tube (31) of the heat shrink device (3) has a C-shaped profile in the circumferential direction, with the opening area facing away from the linear sliding mechanism (2).

8. The heat shrink device for heat shrinkable cable protection sleeve according to claim 1, 6 or 7, characterized in that: The heating cylinder (31) of the heat shrink device (3) is a stainless steel structure.

9. The heat shrink device for cable heat shrinkable protective sleeve according to claim 1 or 7, characterized in that: The linear sliding mechanism (2) is a synchronous belt linear sliding structure, comprising a driving wheel and a driven wheel mounted on a frame (1) at intervals, a linear guide mounted on the frame (1) between the driving wheel and the driven wheel, a linear slider movably mounted on the linear guide, a synchronous belt mounted between the driving wheel and the driven wheel, a servo motor for driving the driving wheel to rotate, limit switches mounted at both ends of the linear guide, and an origin switch mounted between the limit switches at both ends; The heat shrink device (3) is connected to the synchronous belt and the linear slide block via a bracket, and can slide linearly along the linear guide rail when driven by the synchronous belt.

10. A method for using the heat shrink device for cable heat shrinkable protective sleeve according to any one of claims 1 to 9, characterized in that: The method of use comprises the following process steps: Step 1. Reset the heat shrink device (3) to the origin on the workbench (11) via the linear sliding mechanism (2), at the front end of the wire clamp (6); Step 2. Setting the operating temperature of the heat shrink device (3) and the travel speed of the linear sliding mechanism (2) through the electrical controller (7); Step 3. Arrange the cables to be processed along the length of the workbench (11), clamp them with the wire clamp (6) at the front end of the workbench (11) and install them in the heating cylinder (31) of the heat shrink device (3); Step 4. Start the heat shrink device (3) and the linear sliding mechanism (2). The linear sliding mechanism (2) drives the heat shrink device (3) to move from front to back on the workbench (11) at a set speed. During the movement, the heat shrink protective sleeves of the cables to be processed are heat shrunk in sequence. After the linear sliding mechanism (2) drives the heat shrink device (3) to complete the current heat shrink processing stroke from front to back, the linear sliding mechanism (2) drives the heat shrink device (3) to move from back to front on the workbench (11) to reset and wait for the next heat shrink processing stroke.

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