A flat rolling heat shrink tube machine

Abstract

This application discloses a flat rolling heat shrink tubing machine, comprising a rolling heat shrinking mechanism. This mechanism consists of a mounting base, an upper rolling heat shrinking device, and a lower rolling heat shrinking device. The upper and lower devices are respectively equipped with an upper hot pressure roller and a lower hot pressure roller, and are configured with at least one lifting drive module to drive the hot pressure rollers to rise and fall. During operation, the workpiece is placed between the two hot pressure rollers. The rollers are heated to a preset temperature, and the drive module causes the hot pressure rollers to press the workpiece firmly. Simultaneously, the two rollers rotate, moving the workpiece and achieving the rolling heat shrinking of the heat shrink tubing. Direct contact heating is used, resulting in high heat transfer efficiency and low energy consumption. The uniform linear pressure of the hot pressure rollers ensures uniform shrinkage of the heat shrink tubing, improving product yield. The drive module controls the pressing, clamping the workpiece with constant pressure to avoid displacement of the wire core caused by high-temperature airflow impact. The double roller limit ensures the stability of the wire core structure. The synchronous rotation of the two rollers drives the workpiece feed, realizing integrated continuous operation of pressing, heating, and conveying, shortening processing time and improving production efficiency.

Description

Technical Field

[0001] This application relates to the field of wire heat shrink tubing processing equipment, and in particular to a flat rolling heat shrink tubing machine. Background Technology

[0002] In the field of electronic wire harness manufacturing, flat wires are widely used due to their high space utilization and neat wiring. These wires typically consist of multiple parallel, flat cores surrounded by heat-shrink tubing. The heat-shrink tubing shrinks under heat, providing insulation and securing the core group. Throughout this process, it is crucial to ensure the cores remain parallel and flat to prevent displacement that could lead to decreased electrical performance or assembly failure.

[0003] The current mainstream process uses high-temperature gas drying technology: flat wires fitted with heat-shrink tubing are placed in a drying tunnel, and hot air simultaneously heats the upper and lower surfaces of the heat-shrink tubing, causing it to shrink. However, this technology has the following significant drawbacks:

[0004] (1) The gas has low heat conduction efficiency and requires long heating time to trigger the heat shrink reaction, resulting in high energy consumption. At the same time, uneven hot air distribution can easily lead to insufficient or overheating of the heat shrink tube, causing uneven shrinkage and surface wrinkling.

[0005] (2) The dynamic impact of high-temperature airflow can cause the parallel cores to shift or twist, damaging their flat structure. This problem is particularly prominent for densely arranged multi-core wires, directly affecting product yield. Utility Model Content

[0006] The purpose of this application is to provide a high-efficiency flat rolling heat shrink tubing machine that can precisely control heat shrinking temperature and pressure and avoid disturbance to the core structure.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A flat rolling heat shrink tubing machine includes a rolling heat shrinking mechanism, which comprises a mounting base, an upper rolling heat shrinking device, and a lower rolling heat shrinking device. The upper rolling heat shrinking device is mounted on the upper part of the mounting base and includes an upper heat pressure roller, and the lower rolling heat shrinking device is mounted on the lower part of the mounting base and includes a lower heat pressure roller. The rolling heat shrinking mechanism further includes at least one lifting drive module. The lifting drive module is configured to drive the upper heat pressure roller and / or the lower heat pressure roller to move up and down. When the workpiece is located between the upper heat pressure roller and the lower heat pressure roller, the upper heat pressure roller and the lower heat pressure roller are heated to a preset temperature. The lifting drive module drives the upper heat pressure roller and / or the lower heat pressure roller to move to press the workpiece between the upper heat pressure roller and the lower heat pressure roller. At the same time, the upper heat pressure roller and the lower heat pressure roller rotate, driving the workpiece to move and rolling heat shrinking the heat shrink tubing on the workpiece.

[0009] Furthermore, the lifting drive module is a first lifting drive module, configured to drive the upper hot press roller to lift; the position of the lower hot press roller is fixed; the lifting drive module includes a first cam lifting module and a first driven module, the first cam lifting module drives the first driven module to drive the upper hot press roller to lift; the first cam lifting module includes a first drive motor, a first rotating shaft and a first cam, the first drive motor is connected to the first rotating shaft, the first cam is mounted on the first rotating shaft, and the geometric center of the first cam does not coincide with the rotation center of the first rotating shaft, the first driven module converts the rotational motion of the first cam into linear lifting motion and transmits it to the upper hot press roller.

[0010] Furthermore, the first driven module includes a first driven plate, a first guide assembly, a first lifting plate, and a first pressure roller bearing seat. The first driven plate is located above the first cam, and the bottom surface of the first driven plate remains in contact with the first cam. The first driven plate is connected to the first lifting plate through the first guide assembly. The first pressure roller bearing seats are respectively installed on both sides of the lower part of the first lifting plate, and the two ends of the upper hot pressure roller are respectively installed on the first pressure roller bearing seats.

[0011] Furthermore, heating elements are respectively provided inside the upper and lower hot pressing rollers, and temperature sensors are respectively provided inside the upper and lower hot pressing rollers; the heating elements are respectively located at the center position inside the upper hot pressing roller, and the heating elements are respectively located at the center position inside the lower hot pressing roller.

[0012] Furthermore, the upper and lower hot pressing rollers are connected to a rotary drive device for driving them to rotate synchronously; the rotary drive device includes a first drive motor and a transmission mechanism; the output end of the first drive motor is connected to the lower hot pressing roller, driving it to rotate actively; the transmission mechanism is connected between the upper and lower hot pressing rollers for transmitting the rotational power of the lower hot pressing roller to the upper hot pressing roller, so that the two rotate synchronously in opposite directions; the transmission mechanism is a gear transmission mechanism, including a first gear fixed to the shaft end of the lower hot pressing roller and a second gear fixed to the shaft end of the upper hot pressing roller, the first gear and the second gear meshing with each other.

[0013] Furthermore, the surfaces of the upper and lower hot press rollers are respectively provided with an anti-sticking layer.

[0014] Furthermore, the upper hot press roller is provided with an upper scraper at its discharge end; and the lower hot press roller is provided with a scraper plate at its discharge end.

[0015] Furthermore, the flat rolling heat shrink tubing machine also includes a feeding mechanism, which includes a wire fixing fixture, a second lifting drive module, and a transverse drive module. The wire fixing fixture is mounted on the second lifting drive module, and the second lifting drive module is mounted on the transverse drive module.

[0016] Furthermore, the wire fixing fixture includes a fixture base plate and at least one set of clamping block assemblies. The clamping block assemblies are mounted on the fixture base plate and are used to clamp the wire. The clamping block assembly includes a fixed clamping block, a movable clamping block, a fixed block, and a sliding block. The fixed clamping block is mounted on the fixed block and is mounted in a fixed groove of the fixture base plate by a first bolt. The movable clamping block is mounted on the sliding block by a second bolt and is mounted in a sliding groove of the fixture base plate. The sliding block is provided with a clearance groove. When the movable clamping block moves the sliding block, the clearance groove can clear the first bolt of the fixed block. The wire fixing fixture also includes a wire pressing frame, which is used to press the wire onto the clamping block assembly. Both ends of the wire pressing frame are respectively mounted on a rotating seat, and the wire pressing frame can rotate around the rotating seat. The upper surfaces of the fixed clamping block and the movable clamping block are provided with snap-fit ​​grooves corresponding to the wire pressing frame, and the wire pressing frame presses the wire through the snap-fit ​​grooves.

[0017] Furthermore, the second lifting drive module includes a second cam lifting module and a second driven module. The second cam lifting module includes a second drive motor, a second rotating shaft, a second bearing seat, and a second cam. The second drive motor is connected to the second rotating shaft, and the second cam is mounted on the second rotating shaft. The geometric center of the second cam does not coincide with the rotation center of the second rotating shaft. The second driven module converts the rotational motion of the second cam into linear lifting motion and transmits it to the wire fixing fixture to drive the wire to lift. The second driven module includes a feeding platform, a second driven seat, and a third guide assembly. The second driven seat is mounted on the second cam through a drive groove. The upper surface of the second driven seat is connected to the feeding platform. The feeding platform is mounted on the transverse drive module through the third guide assembly. The second cam drives the second driven seat and the feeding platform to lift through the drive groove.

[0018] The beneficial effects of this application are as follows:

[0019] (1) This application adopts the method of direct contact heating between upper and lower hot pressure rollers, which greatly improves the heat conduction efficiency compared with gas heating and can also reduce energy consumption; the hot pressure rollers apply uniform linear pressure to the heat shrink tube, and with the precise control of the preset temperature, the heat shrink tube shrinks evenly when heated, eliminating the local wrinkling and uneven shrinkage caused by traditional processes, and improving the product yield.

[0020] (2) This application controls the pressing action of the upper and lower hot pressure rollers through the lifting drive module, and gently clamps the workpiece with constant pressure, completely avoiding the risk of wire core displacement caused by high temperature airflow impact. During the rolling process, the wire core is stably limited between the planes formed by the two rollers, ensuring that the side-by-side flat structure is without twisting or misalignment, which is especially suitable for the processing of fine wire cores.

[0021] (3) This application adopts a dual-roller synchronous rotation to drive the automatic feeding of the workpiece, realizing the integrated continuous operation of pressing, heating and conveying, which greatly shortens the processing time of a single piece and greatly improves the production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a flat wire provided in an embodiment of this application;

[0023] Figure 2 for Figure 1 Sectional view at AA;

[0024] Figure 3 This is a schematic diagram of the structure of a flat rolling heat shrink tubing machine provided in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the structure of a rolling heat shrinking mechanism provided in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the rolling heat shrinking mechanism provided in one embodiment of this application from another perspective.

[0027] Figure 6 A cross-sectional view of a rolling heat shrinking mechanism provided in an embodiment of this application;

[0028] Figure 7 A cross-sectional view of an upper and lower hot press roller provided in an embodiment of this application;

[0029] Figure 8 A cross-sectional view of an upper and lower hot press roller provided in an embodiment of this application;

[0030] Figure 9 This is a schematic diagram illustrating the specific operation of a rolling heat shrinking mechanism provided in an embodiment of this application.

[0031] Figure 10 This is a schematic diagram of the structure of a feeding mechanism provided in one embodiment of this application;

[0032] Figure 11 This is a schematic diagram of the structure of a wire fixing fixture provided in an embodiment of this application;

[0033] Figure 12 This is a schematic diagram of the structure of a wire fixing fixture provided in an embodiment of this application;

[0034] Figure 13 A cross-sectional view of a wire fixing fixture provided in an embodiment of this application;

[0035] Figure 14 A cross-sectional view of a wire fixing fixture provided in an embodiment of this application;

[0036] Figure 15 A cross-sectional view of a feeding mechanism provided in an embodiment of this application;

[0037] Explanation of reference numerals in the attached figures:

[0038] Q, Flat wire; Q1, Wire core; Q2, Heat shrink tubing; W, Anti-stick layer;

[0039] 100. Roller heat shrinking mechanism; 200. Feeding mechanism; 300. Control unit; 400. Workbench; 500. Housing;

[0040] 110. Mounting base; 120. Upper rolling heat shrink device; 130. Lower rolling heat shrink device; 140. Lifting drive module; 150. Rotation drive device; 160. Heating element; 170. Temperature sensor; 180. Conductive slip ring;

[0041] 111. Install the horizontal board; 112. Install the vertical board;

[0042] 121. Install the upper hot press roller; 122. Install the upper scraper;

[0043] 131. Lower heating roller; 132. Scraper plate;

[0044] 140A, First lifting drive module;

[0045] 141. First cam lifting module; 142. First driven module;

[0046] 1411, First drive motor; 1412, First rotating shaft; 1413, First cam; 1414, First bearing housing;

[0047] 1421. First driven plate; 1422. First guide assembly; 1423. First lifting plate; 1424. First pressure roller bearing seat; 1425. Second guide assembly;

[0048] 1422a, guide post; 1422b, guide sleeve; 1422c, return spring;

[0049] 1425a, Guide rail; 1425b, Slider assembly;

[0050] 151. First rotary drive motor; 152. Transmission mechanism;

[0051] 210. Wire fixing fixture; 220. Second lifting drive module; 230. Lateral movement drive module;

[0052] 211. Fixture base plate; 212. Clamping block assembly; 213. Wire pressing frame; 214. Rotating seat;

[0053] 2121. Fixed clamping block; 2122. Movable clamping block; 2123. Fixed block; 2124. Sliding block; 2125. First bolt; 2126. Second bolt; 2127. Snap groove;

[0054] 2111, Positioning hole;

[0055] 221. Second cam lifting module; 222. Second driven module;

[0056] 2211, Second drive motor; 2212, Second rotating shaft; 2213, Second bearing housing; 2214, Second cam;

[0057] 2221. Feeding platform; 2222. Second driven seat; 2223. Third guide assembly;

[0058] 310. Heat insulation plate; 320. Control panel; 330. First cooling fan; 410. Support feet; 420. Casters; 510. Second cooling fan; Detailed Implementation

[0059] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0060] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," etc., are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In particular, the understanding of the term "upper" following a noun in the claims should be understood as meaning that the entire inner and outer surfaces of the structure referred to by the noun conform to the definition of "upper."

[0061] The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, describes the specific implementation methods, structures, features, and effects provided in this application.

[0062] like Figure 1 and Figure 2As shown, the workpiece is a flat wire Q, which consists of multiple parallel wire cores Q1. A head is provided at its front end, and a heat shrink tubing Q2 is fitted around its outer perimeter. The heat shrink tubing Q2 is a tubular product made of a polymer material that shrinks and tightly adheres to the object being wrapped when heated, achieving insulation, protection, sealing, or fixing functions.

[0063] like Figure 3 As shown, a flat rolling heat shrink tubing machine includes a rolling heat shrinking mechanism 100, a feeding mechanism 200, a control unit 300, and a worktable 400. The rolling heat shrinking mechanism 100 and the feeding mechanism 200 are mounted on the worktable 400. The feeding mechanism 200 is located in front of the rolling heat shrinking mechanism 100 and is used to transport the workpiece to the rolling heat shrinking mechanism 100. After the rolling heat shrinking mechanism 100 clamps the workpiece, it heat-presses the heat shrink tubing Q2, causing the heat shrink tubing Q2 to shrink onto the workpiece. Both the rolling heat shrinking mechanism 100 and the feeding mechanism 200 are enclosed in a shell 500. The control unit 300 is located on the upper part of the rolling heat shrinking mechanism 100. The feeding mechanism 200 can also be replaced by manual feeding.

[0064] like Figure 4 As shown, the rolling heat shrinking mechanism 100 includes a mounting base 110, an upper rolling heat shrinking device 120, a lower rolling heat shrinking device 130, at least one lifting drive module 140, and a rotary drive device 150. The upper rolling heat shrinking device 120 is mounted on the upper part of the mounting base 110 and includes an upper heat-pressing roller 121, and the lower rolling heat shrinking device 130 is mounted on the lower part of the mounting base 110 and includes a lower heat-pressing roller 131. The lifting drive module 140 is configured to drive... The upper hot press roller 121 is raised and lowered; when the workpiece is between the upper hot press roller 121 and the lower hot press roller 131, the upper hot press roller 121 and the lower hot press roller 131 are heated to a preset temperature, and the lifting drive module 140 drives the upper hot press roller 121 to move to press the workpiece between the upper hot press roller 121 and the lower hot press roller 131. At the same time, the upper hot press roller 121 and the lower hot press roller 131 rotate, driving the workpiece to move and roll and heat shrink the heat shrink tube Q2 on the workpiece.

[0065] like Figure 5 As shown, specifically, the mounting base 110 includes a mounting horizontal plate 111 and two mounting vertical plates 112, which are respectively mounted on both ends of the mounting horizontal plate 111.

[0066] In one embodiment, the lifting drive module 140 is a first lifting drive module 140A, which is configured to drive the upper hot press roller 121 to lift; the position of the lower hot press roller 131 is fixed.

[0067] In one embodiment, the lifting drive module 140 is a third lifting drive module (not shown in the figure), which is configured to drive the lower hot press roller 131 to lift; the position of the upper hot press roller 121 is fixed.

[0068] In one embodiment, the lifting drive module 140 includes a fourth lifting drive module (not shown) and a fifth lifting drive module (not shown); the fourth lifting drive module is configured to drive the upper hot press roller 121 to lift; and the fifth lifting drive module is configured to drive the lower hot press roller 131 to lift.

[0069] like Figure 6 As shown, specifically, the lifting drive module 140 includes a first cam lifting module 141 and a first driven module 142. The first cam lifting module 141 drives the first driven module 142 to drive the upper hot pressure roller 121 to lift. In this embodiment, the cam mechanism is used to achieve precise and controllable lifting stroke and clamping force, ensuring stable clamping of the workpiece by the upper and lower hot pressure rollers 131.

[0070] like Figure 6 As shown, in one embodiment, the first cam lifting module 141 includes a first drive motor 1411, a first rotating shaft 1412, a first cam 1413, and a first bearing seat 1414. The first drive motor 1411 is connected to the first rotating shaft 1412. The first cam 1413 is mounted on the first rotating shaft 1412, and the geometric center of the first cam 1413 does not coincide with the rotation center of the first rotating shaft 1412. The first driven module 142 converts the rotational motion of the first cam 1413 into linear lifting motion and transmits it to the upper hot press roller 121. The first rotating shaft 1412 is mounted on the first bearing seat 1414. In this embodiment, the eccentric first cam 1413 directly and efficiently converts the rotational motion into the required lifting motion, resulting in a compact and reliable structure.

[0071] like Figure 6 As shown, in one embodiment, the first driven module 142 includes a first driven plate 1421, a first guide assembly 1422, a first lifting plate 1423, and a first pressure roller bearing seat 1424. The first driven plate 1421 is located above the first cam, and the bottom surface of the first driven plate 1421 remains in contact with the first cam. The first driven plate 1421 is connected to the first lifting plate 1423 through the first guide assembly 1422. The first pressure roller bearing seats 1424 are respectively installed on both sides of the lower part of the first lifting plate 1423, and both ends of the upper hot pressure roller 121 are respectively installed on the first pressure roller bearing seats 1424. This embodiment, through rigid connection and guidance, stably transmits the movement of the first cam to the upper hot pressure roller 121, ensuring lifting accuracy.

[0072] like Figure 5As shown, the first guide assembly 1422 includes a guide post 1422a, a guide sleeve 1422b, and a return spring 1422c. The upper end of the return spring 1422c is connected to the side of the first driven plate 1421, and the lower end of the return spring 1422c is mounted on the upper surface of the mounting base 110. In this embodiment, the guide post 1422a and the guide sleeve 1422b provide vertical guiding accuracy, and the return spring 1422c ensures continuous contact between the cam and the driven plate and assists in resetting, thereby improving the smoothness of movement.

[0073] like Figure 5 As shown, in one embodiment, a second guide assembly 1425 is provided on the pressure roller bearing housing, and its guiding direction is parallel to the first guide assembly 1422. The second guide assembly 1425 includes a guide rail 1425a fixed to the mounting base 110 and a slider assembly 1425b disposed on the side of the pressure roller bearing housing and cooperating with the guide rail 1425a. In this embodiment, the second guide assembly 1425 provides additional high-rigidity, low-friction guidance, effectively resisting the lateral force generated during rolling, preventing the hot pressure roller from shifting, and ensuring stable clamping and conveying.

[0074] like Figure 7 As shown, in one embodiment, heating elements 160 are provided inside the upper hot press roller 121 and the lower hot press roller 131. In this embodiment, heat is directly and efficiently conducted to the roller surface, reducing heat loss and improving heating efficiency and temperature uniformity.

[0075] In one embodiment, the heating element 160 is located at the center of the upper hot press roller 121 and the lower hot press roller 131. In this embodiment, uniform radial heat conduction of 360° is achieved in the roller body, ensuring a highly consistent roller surface temperature and avoiding localized areas.

[0076] In one embodiment, the heating element 160 is a heating tube.

[0077] like Figure 5 As shown, in one embodiment, the upper hot press roller 121 and the lower hot press roller 131 are connected to a rotary drive device 150 for driving them to rotate synchronously. This achieves forced synchronous rotation of the two rollers, ensuring smooth workpiece transport and uniform heating.

[0078] like Figure 5 As shown, in one embodiment, the rotary drive device 150 includes a first rotary drive motor 151 and a transmission mechanism 152. The output end of the first rotary drive motor 151 is connected to the lower hot press roller 131, driving it to rotate actively. The transmission mechanism 152 is connected between the upper hot press roller 121 and the lower hot press roller 131, and is used to transmit the rotational power of the lower hot press roller 131 to the upper hot press roller 121, so that the two rotate synchronously in opposite directions. A single motor forces the upper and lower rollers to rotate absolutely synchronously in opposite directions through gear meshing, which is simple, reliable, and low in cost.

[0079] like Figure 5 As shown, in one embodiment, the transmission mechanism 152 is a gear transmission mechanism, including a first gear 1521 fixed to the shaft end of the lower hot press roller 131 and a second gear 1522 fixed to the shaft end of the upper hot press roller 121, with the first gear and the second gear meshing with each other. The meshing gears provide a precise 1:1 speed ratio and reverse rotation, ensuring that the linear velocity of the roller surface is strictly consistent and preventing the workpiece from slipping or twisting.

[0080] In one embodiment, the rotary drive device 150 includes a second rotary drive motor (not shown in the figure), whose output end is directly connected to the upper hot press roller 121, driving it to rotate actively; the lower hot press roller 131 rotates in turn via a driven gear. The active drive of the upper roller can reduce the impact of the load on the meshing gears, which is suitable for the upper roller as the main load-bearing condition and extends the gear life.

[0081] In one embodiment, the rotary drive device 150 includes a third rotary drive motor and a fourth rotary drive motor (not shown in the figure); the output end of the third rotary drive motor is connected to the upper hot press roller 121, driving it to rotate actively; the output end of the fourth rotary drive motor is connected to the lower hot press roller 131, driving it to rotate actively; the rolling heat shrinking mechanism 100 also includes a synchronization controller for controlling the third and fourth rotary drive motors to operate synchronously, so that the upper and lower hot press rollers 131 maintain the same linear speed. Electronic synchronization eliminates mechanical coupling and allows dynamic adjustment to adapt to different wire diameters / speeds, avoiding mechanical interference.

[0082] In one embodiment, the rotary drive 150 further includes a speed reducer for adjusting the output torque. Increasing the output torque and optimizing the motor operating speed ensures stable rolling of thick-walled heat shrink tubing Q2 or high-resistance workpieces.

[0083] like Figure 7 As shown, in one embodiment, the surfaces of the upper hot press roller 121 and the lower hot press roller 131 are respectively provided with an anti-stick layer W. This effectively prevents the molten heat shrink tubing Q2 material from sticking to the roller surface, ensuring continuous production and product surface quality. The anti-stick layer W is made of at least one of polytetrafluoroethylene (PTFE), ceramic coating, or hard anodized aluminum. The material of the anti-stick layer W can provide excellent high-temperature resistance, chemical inertness, and a low coefficient of friction, ensuring long-term stable anti-sticking and resistance to rolling environments.

[0084] like Figure 7As shown, in one embodiment, temperature sensors 170 are respectively installed inside the upper hot press roller 121 and the lower hot press roller 131. The temperature sensors 170 are communicatively connected to the temperature control system for real-time feedback of the roller temperature and closed-loop control of the heating power. The temperature sensors 170 are platinum resistance thermometers or thermocouples, with their sensing ends embedded inside the hot press rollers close to the roller surface. The measurement point is closer to the actual working surface, resulting in more accurate temperature feedback and more precise control.

[0085] like Figure 6 As shown, in one embodiment, one end of the upper hot press roller 121 and the lower hot press roller 131 are fixed by a conductive slip ring 180. This solves the problem of continuous power supply and signal transmission for the heating element 160 and temperature sensor inside the rotating roller, ensuring stable operation of the equipment.

[0086] like Figure 8 As shown, in one embodiment, the discharge end of the upper hot press roller 121 is provided with an upper scraper 122. This scraper can actively peel off any workpiece or heat shrink tubing residue that may be slightly adhered to the roller surface, preventing entanglement or accumulation and ensuring smooth discharge.

[0087] like Figure 8 As shown, in one embodiment, the discharge end of the lower hot press roller 131 is provided with a scraper plate 132. This plate serves both scraping and guiding functions, removing residual material from the lower roller and guiding the finished workpiece smoothly into the collection area.

[0088] Combined with appendix Figure 9 The specific operation mode of the rolling heat shrinking mechanism 100 is as follows:

[0089] First, the flat wire Q (workpiece) fitted with heat shrink tubing Q2 is horizontally fed into the gap between the upper heat pressure roller 121 and the lower heat pressure roller 131. This can be done manually or by the feeding mechanism 200. The lifting drive module (such as a cam mechanism or direct motor drive) is activated to drive the upper heat pressure roller 121 to press down or the lower heat pressure roller 131 to push up (or the two rollers work together) so that the two rollers can accurately clamp the workpiece, ensuring that the wire core Q1 is stably fixed and kept flat.

[0090] The heating element 160 (such as a heating tube) inside the double rollers heats the roller body to a preset temperature (controlled in a closed loop by a temperature sensor 170); the rotary drive device 150 (such as gear linkage or dual motor synchronization) drives the double rollers to rotate synchronously in opposite directions: the rotating roller surface drives the workpiece to move forward automatically through friction, and at the same time, the heat is directly conducted to the heat shrink tubing Q2 through the roller surface.

[0091] During the movement of the workpiece: the clamping force of the double rollers makes the heat shrink tube Q2 tightly attached to the wire core Q1; the roller surface heats the heat shrink tube Q2 evenly in 360°, so that it shrinks without dead corners; the workpiece enters from the roller gap input end, and after continuous rolling, it is output from the output end; at this time, the heat shrink tube Q2 has covered and fixed the flat wire core Q1.

[0092] like Figure 10 As shown, in one embodiment, the flat rolling heat shrink tubing machine further includes a feeding mechanism 200. The feeding mechanism 200 includes a wire fixing fixture 210, a second lifting drive module 220, and a traverse drive module 230. The wire fixing fixture 210 is mounted on the second lifting drive module 220, and the second lifting drive module 220 is mounted on the traverse drive module 230. This embodiment achieves precise positioning, lifting, and traverse feeding of the wire, improving the degree of automation and feeding accuracy.

[0093] like Figure 11 and Figure 12 As shown, in one embodiment, the wire fixing fixture 210 includes a fixture base plate 211 and at least one set of clamping block assemblies 212. The clamping block assemblies 212 are mounted on the fixture base plate 211 and are used to clamp the wire. This embodiment features a modular structure that adapts to different wire specifications and allows for flexible workpiece fixing via adjustable clamping blocks.

[0094] like Figure 13 and Figure 14 As shown, in one embodiment, the clamping block assembly 212 includes a fixed clamping block 2121, a movable clamping block 2122, a fixed block 2123, and a sliding block 2124. The fixed clamping block 2121 is mounted on the fixed block 2123. The fixed block 2123 and the sliding block 2124 can be configured as two sets. The fixed block 2123 is mounted in the fixing groove of the fixture base plate 211 by a first bolt 2125. The movable clamping block 2122 is mounted on the sliding block 2124 by a second bolt 2126. The lower part of the sliding block 2124 is mounted in the fixing groove of the fixture base plate 211, and its upper part is mounted in the sliding groove. Its lower part cooperates with the fixing groove and the second bolt 2126 to lock the movable clamping block 2122. The sliding block 2124 is provided with a clearance groove. When the movable clamping block 2122 moves the sliding block 2124, the clearance groove can avoid the first bolt 2125 of the fixed block 2123. In this embodiment, the movable clamping block 2122 achieves stepless adjustment through the movement of the sliding groove, and the avoidance groove cleverly avoids the fixing bolt, ensuring that the clamping range is freely adjustable and without structural interference.

[0095] like Figure 13 As shown, there are 5 sets of fixed clamping blocks 2121 and movable clamping blocks 2122. When clamping, only one set of movable clamping blocks 2122 needs to be moved to drive the other four sets of movable clamping blocks 2122 to move synchronously, thus speeding up the clamping time.

[0096] like Figure 11 and Figure 12As shown, in one embodiment, the wire fixing fixture 210 further includes a wire clamping frame 213 for clamping the wire onto the clamping block assembly 212; the two ends of the wire clamping frame 213 are respectively mounted on the rotating seat 214, and the wire clamping frame 213 can rotate around the rotating seat 214; the rotary clamping design facilitates rapid material release.

[0097] In one embodiment, the wire clamp 213 has a circular cross-section, which reduces resistance when the wire moves. The circular cross-section reduces friction during wire movement and prevents scratches.

[0098] like Figure 14 As shown, in one embodiment, the upper surfaces of the fixed clamping block 2121 and the movable clamping block 2122 are provided with locking grooves 2127 corresponding to the wire clamping frame 213, and the wire clamping frame 213 clamps the wire through the locking grooves 2127. The locking grooves 2127 form a closed clamping space to prevent the wire from tilting or shifting during feeding.

[0099] like Figure 11 As shown, in one embodiment, the fixture base plate 211 is provided with positioning holes 2111, which cooperate with the positioning pins on the feeding platform 2221 to achieve rapid positioning of the fixture plate. This, in conjunction with the platform positioning pins, enables rapid fixture replacement and precise positioning, improving changeover efficiency.

[0100] like Figure 15 As shown, in one embodiment, the second lifting drive module 220 includes a second cam lifting module 221 and a second driven module 222. The second cam lifting module 221 includes a second drive motor 2211, a second rotating shaft 2212, a second bearing seat 2213, and a second cam 2214. The second drive motor 2211 is connected to the second rotating shaft 2212. The second cam 2214 is mounted on the second rotating shaft 2212, and the geometric center of the second cam 2214 does not coincide with the rotation center of the second rotating shaft 2212. The second driven module 222 converts the rotational motion of the second cam 2214 into linear lifting motion and transmits it to the wire fixing fixture 210 to drive the wire to lift. The second cam 2214 drive ensures precise and controllable lifting stroke, high repeatability, and is suitable for high-frequency operations.

[0101] like Figure 15 As shown, in one embodiment, the second driven module 222 includes a feeding platform 2221, a second driven seat 2222, and a third guide assembly 2223. The second driven seat 2222 is mounted on a second cam via a drive slot. The upper surface of the second driven seat 2222 is connected to the feeding platform 2221. The feeding platform 2221 is mounted on a transverse drive module 230 via the third guide assembly 2223. The second cam drives the second driven seat 2222 and the feeding platform 2221 to move up and down via the drive slot. The third guide assembly 2223 consists of a guide post 2223a and a guide sleeve 2223b.

[0102] In one embodiment, the transverse drive module 230 is a servo motor linear module. Servo control enables precise adjustment of the feeding position and speed to adapt to different process cycles.

[0103] Combined with appendix Figure 1 and attached Figure 2 The specific operation mode of the feeding mechanism 200 is as follows:

[0104] Place the wire between the fixed clamp 2121 and the movable clamp 2122 of the clamp assembly 212, push the movable clamp 2122 to lock the wire, so that the wire is positioned on both sides when it moves; press down the circular wire clamp 213 so that it snaps into the snap groove 2127 above the clamp, thus completing the positioning of the left and right sides and the top of the wire.

[0105] The second drive motor 2211 starts and drives the second cam to rotate. The cam pushes the second driven seat 2222 through the drive groove, which drives the feeding platform 2221 to rise and fall vertically along the guide post 1422a and guide sleeve 1422b; raising the lower surface of the wire to a height aligned with the upper surface of the lower hot press roller 131.

[0106] The servo motor linear module starts, driving the entire feeding platform 2221 to move horizontally; the wire is precisely pushed into the rolling gap entrance between the upper and lower hot press rollers 131.

[0107] After hot pressing is completed, the horizontal moving module retracts and the lifting module descends to reset; the movable clamp 2122 and the wire pressing frame 213 are released, the finished product is taken out and a new wire is put in, and the next cycle begins.

[0108] like Figure 3 As shown, in one embodiment, the control unit 300 is disposed above the rolling heat shrinking mechanism 100, and a heat insulation plate 310 is provided between the control unit 300 and the rolling heat shrinking mechanism 100. This prevents the high temperature of the heat-pressing roller from being conducted to the control unit 300, protecting the stability of electronic components and extending the equipment life.

[0109] like Figure 3 As shown, in one embodiment, a control panel 320 is provided on the surface of the control unit 300, a first cooling fan 330 is provided on one side of the control unit 300, and a heat sink is provided on the other side of the control unit 300. Forced air cooling and natural convection work together to efficiently dissipate heat from the control cabinet and prevent components from overheating.

[0110] like Figure 3 As shown, in one embodiment, the bottom of the worktable 400 is provided with support feet 410 and / or movable casters 420.

[0111] like Figure 3As shown, in one embodiment, a second cooling fan 510 is provided on one side of the outer casing 500, and a heat dissipation groove is provided on the other side of the heat insulation cover. This establishes a directional airflow channel inside the entire machine, accelerates the discharge of waste heat from the hot pressing area, and keeps the temperature rise of the equipment under control.

[0112] The embodiments described above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A flat rolling heat shrink tubing machine, characterized in that: The device includes a heat shrinking mechanism, comprising a mounting base, an upper heat shrinking device, and a lower heat shrinking device. The upper heat shrinking device is mounted on the upper part of the mounting base and includes an upper heat shrinking roller, and the lower heat shrinking device is mounted on the lower part of the mounting base and includes a lower heat shrinking roller. The heat shrinking mechanism also includes at least one lifting drive module configured to drive the upper heat shrinking roller and / or the lower heat shrinking roller to move up and down. When the workpiece is located between the upper and lower hot press rollers, the upper and lower hot press rollers are heated to a preset temperature. The lifting drive module drives the upper and / or lower hot press rollers to move to press the workpiece between the upper and lower hot press rollers. At the same time, the upper and lower hot press rollers rotate, driving the workpiece to move and roll-shrink the heat shrink tubing on the workpiece.

2. The flat rolling heat shrink tubing machine according to claim 1, characterized in that: The lifting drive module is a first lifting drive module, which is configured to drive the upper hot press roller to lift; the position of the lower hot press roller is fixed. The lifting drive module includes a first cam lifting module and a first driven module. The first cam lifting module drives the first driven module to drive the upper hot pressure roller to lift. The first cam lifting module includes a first drive motor, a first rotating shaft, and a first cam. The first drive motor is connected to the first rotating shaft, and the first cam is mounted on the first rotating shaft. The geometric center of the first cam does not coincide with the rotation center of the first rotating shaft. The first driven module converts the rotational motion of the first cam into linear lifting motion and transmits it to the upper hot pressure roller.

3. A flat rolling heat shrink tubing machine according to claim 2, characterized in that: The first driven module includes a first driven plate, a first guide assembly, a first lifting plate, and a first pressure roller bearing seat. The first driven plate is located above the first cam, and the bottom surface of the first driven plate is in contact with the first cam. The first driven plate is connected to the first lifting plate through the first guide assembly. The first pressure roller bearing seats are respectively installed on both sides of the lower part of the first lifting plate, and the two ends of the upper hot pressure roller are respectively installed on the first pressure roller bearing seats.

4. A flat rolling heat shrink tubing machine according to any one of claims 1-3, characterized in that: Heating elements are respectively installed inside the upper and lower hot pressing rollers, and temperature sensors are respectively installed inside the upper and lower hot pressing rollers; the heating elements are respectively installed at the center position inside the upper hot pressing roller and the heating elements are respectively installed at the center position inside the lower hot pressing roller.

5. A flat rolling heat shrink tubing machine according to any one of claims 1-3, characterized in that: The upper and lower hot pressing rollers are connected to a rotary drive device for driving them to rotate synchronously; the rotary drive device includes a first drive motor and a transmission mechanism; the output end of the first drive motor is connected to the lower hot pressing roller, driving it to rotate actively. The transmission mechanism is connected between the upper hot press roller and the lower hot press roller, and is used to transmit the rotational power of the lower hot press roller to the upper hot press roller, so that the two rotate synchronously in opposite directions. The transmission mechanism is a gear transmission mechanism, including a first gear fixed to the lower hot press roller shaft end and a second gear fixed to the upper hot press roller shaft end, wherein the first gear and the second gear mesh with each other.

6. A flat rolling heat shrink tubing machine according to any one of claims 1-3, characterized in that: The surfaces of the upper and lower hot press rollers are respectively provided with an anti-sticking layer.

7. A flat rolling heat shrink tubing machine according to any one of claims 1-3, characterized in that: The upper hot press roller is equipped with an upper scraper at its discharge end; the lower hot press roller is equipped with a scraper plate at its discharge end.

8. A flat rolling heat shrink tubing machine according to any one of claims 1-3, characterized in that: The flat rolling heat shrink tubing machine also includes a feeding mechanism, which includes a wire fixing fixture, a second lifting drive module, and a transverse drive module. The wire fixing fixture is mounted on the second lifting drive module, and the second lifting drive module is mounted on the transverse drive module.

9. A flat rolling heat shrink tubing machine according to claim 8, characterized in that: The wire fixing fixture includes a fixture base plate and at least one set of clamping block assemblies. The clamping block assemblies are mounted on the fixture base plate and are used to clamp the wire. Each clamping block assembly includes a fixed clamping block, a movable clamping block, a fixed block, and a sliding block. The fixed clamping block is mounted on the fixed block and is installed in a fixed groove of the fixture base plate by a first bolt. The movable clamping block is mounted on the sliding block by a second bolt and is installed in a sliding groove of the fixture base plate. The sliding block is provided with a clearance groove. When the movable clamping block moves the sliding block, the clearance groove can clear the first bolt of the fixed block. The wire fixing fixture also includes a wire pressing frame, which is used to press the wire onto the clamping block assembly. Both ends of the wire pressing frame are respectively mounted on a rotating seat, and the wire pressing frame can rotate around the rotating seat. The upper surfaces of the fixed clamping block and the movable clamping block are provided with snap-fit ​​grooves corresponding to the wire pressing frame, and the wire pressing frame presses the wire through the snap-fit ​​grooves.

10. A flat rolling heat shrink tubing machine according to claim 9, characterized in that: The second lifting drive module includes a second cam lifting module and a second driven module. The second cam lifting module includes a second drive motor, a second rotating shaft, a second bearing seat, and a second cam. The second drive motor is connected to the second rotating shaft. The second cam is mounted on the second rotating shaft, and the geometric center of the second cam does not coincide with the rotation center of the second rotating shaft. The second driven module converts the rotational motion of the second cam into linear lifting motion and transmits it to the wire fixing fixture to drive the wire to lift. The second driven module includes a feeding platform, a second driven seat, and a third guide assembly. The second driven seat is mounted on the second cam through a drive groove. The upper surface of the second driven seat is connected to the feeding platform. The feeding platform is mounted on the transverse drive module through the third guide assembly. The second cam drives the second driven seat and the feeding platform to lift through the drive groove.

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