A fully automatic and precise heat shrink system based on cable assemblies

Abstract

The present invention discloses a fully automatic and precise heat shrinking system based on cable assemblies, which belongs to the technical field of automated assembly of heat shrinkable tubing. The fully automatic and precise heat shrinking system based on cable assemblies includes a transmission device, a clamping device, a heating cylinder and a positioning device. During use, the system realizes automatic detection of wire diameter size through a sensing device, and at the same time, combines industrial experience value matching to adaptively adjust the power and wind speed of hot air blowing for different wire diameters. In addition, based on the data collected by the temperature acquisition sensor, the output hot air power is monitored and displayed in real time, and combined with the positioning device and the transportation mechanism, the first-level preheating and fixation of the heat shrinkable tubing and fully automatic and precise heat shrinkage are realized, thereby completing the heat shrinking process quickly, effectively and with high quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic assembly of heat shrink tubing, and in particular relates to a fully automatic and precise heat shrink system based on cable assemblies. Background Art

[0002] Heat shrink tubing is a type of insulating tubing that shrinks at high temperatures, is flexible, flame-retardant, and offers insulation and corrosion resistance. It plays a crucial role in the manufacturing of electronic devices, particularly cable assemblies. Traditional heat shrinking processes rely on manual expansion, often performed with a handheld hot air gun or a shrinking machine. With the trend toward high-volume, small-variety production and rising labor costs, uneven heating of the tubing is a common problem, leading to inconsistent diameters and wall thicknesses, low efficiency, and increased production costs. Therefore, a fully automated, precision heat shrinking system widely applicable to most cable assemblies is needed to replace repetitive labor, reduce labor costs, and improve heat shrink process quality. Summary of the Invention

[0003] In response to the above technical problems, the present invention provides a fully automatic and precise heat shrinking system based on cable assemblies in order to overcome the problems of inconsistent heat shrinkage quality, low labor efficiency and high labor costs in the traditional heat shrinking process during the manufacturing process of cable assemblies.

[0004] The present invention solves the above problems through the following technical means:

[0005] A fully automatic precise heat shrink system based on cable assemblies, characterized in that it includes a transmission device, a clamping device, a heating cylinder and a positioning device, wherein: the transmission device is composed of a driving motor and a conveyor belt, and the driving motor drives the conveyor belt to work through a reduction wheel; the clamping device is detachably mounted on the conveyor belt, and is used to clamp the cable assembly and the heat shrink tube sleeve fixedly mounted on the end of the cable assembly; the clamping device is composed of a tightening plate, a side mounting plate, a pressure wheel and a work clamp, the tightening plate is used to tighten the heat shrink tube sleeve, the side mounting plate can move along the slide rail to adjust the gap, the pressure wheel is symmetrically arranged on the side mounting plate, and is used to press the heat shrink tube sleeve; the heating cylinder is arranged at one end of the transmission device, and is used to accurately heat the heat shrink tube sleeve; the positioning device is arranged in the heating cylinder, and is used to sense the position of the clamping device.

[0006] Preferably, a first-level heating ring and a second-level heating ring are provided inside the heating cylinder, and a first-level temperature sensor and a first-level hot air outlet are symmetrically and equidistantly arranged on the first-level heating ring, and a second-level temperature sensor and a second-level hot air outlet are symmetrically and equidistantly arranged on the second-level heating ring.

[0007] Preferably, the positioning device includes a primary positioning device and a secondary positioning device, the primary positioning device is arranged in front of the primary heating ring, and the secondary positioning device is arranged in front of the secondary heating ring.

[0008] Preferably, it further comprises a caliper arranged on one side of the transmission device, wherein the caliper is used to detect the cable diameter of the cable assembly.

[0009] Preferably, it also includes a display device and a central controller, and the central controller is respectively connected to the display device, the diameter gauge, the positioning device, the first-level temperature sensor, the second-level temperature sensor, the first-level hot air blower and the second-level hot air blower, wherein: the central controller accurately controls the heating time and heating temperature of the heat shrink tube sleeve based on the cable diameter and current temperature of the cable assembly, the first-level hot air blower is connected to the first-level hot air outlet for first-level heating, and the second-level hot air blower is connected to the second-level hot air outlet for second-level heating.

[0010] The invented fully automatic precision heat shrink system based on cable assemblies has the following beneficial effects:

[0011] (1) The system can automatically transport cable assemblies with heat shrink tubing in batches. The positioning device can accurately locate the relative position of the heat shrink tubing to achieve automatic transportation. By storing a large amount of industrial experience data, the system automatically detects the wire diameter and selects the optimal heat shrink parameters of the relevant heat shrink tubing. Through the innovative annular air supply mechanism, combined with the optimal heat shrink parameters, uniform annular air supply is achieved during the heat shrink process to ensure quality consistency during the heat shrink process. Through the temperature sensor, the execution process of the heat shrinkage is monitored and displayed in real time, and the execution results are fed back.

[0012] (2) This system can greatly promote the standardization, informatization, and automation of the heat shrink process for cable assembly heat shrink tubing, eliminate errors caused by manual batch operations, significantly improve the production efficiency of cable assembly companies, reduce production costs, ensure quality consistency during the heat shrink process, and improve product quality. This invention has been implemented in a number of electrical connector manufacturing companies with good results. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic structural diagram of the clamping device of the present invention;

[0016] Figure 3 It is a schematic structural diagram of the heating tube of the present invention;

[0017] Figure 4 It is a schematic diagram of the installation of the absolute positioning device of the present invention.

[0018] Among them, 1-transmission device, 101-drive motor, 102-conveyor belt, 2-clamping device, 201-tightening plate, 202-side mounting plate, 203-pressure wheel, 204-work clamp, 3-heating cylinder, 301-first-level heating ring, 302-second-level heating ring, 3011-first-level temperature sensor, 3012-first-level hot air outlet, 3021-second-level temperature sensor, 3022-second-level hot air outlet, 4-positioning device, 401-first-level positioning device, 402-second-level positioning device, 5-cable assembly, 6-heat shrink tube sleeve, 7-diameter gauge, 8-display device, 9-central controller. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] The present invention will be described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 4As shown, the fully automatic precision heat shrinkage system based on cable assemblies is characterized by including a transmission device 1, a clamping device 2, a heating cylinder 3, a positioning device 4, a diameter gauge 7, a display device 8 and a central controller 9. In the figure, the transmission device 1 is composed of a drive motor 101 and a conveyor belt 102. The drive motor 101 drives the conveyor belt 102 to work through a reduction wheel. During specific implementation, a tensioning device can also be configured. The clamping device 2 is detachably mounted on the conveyor belt 102 and is used to clamp the cable assembly 5 and the heat shrink tube sleeve 6 fixedly mounted on the end of the cable assembly 5. Specifically, the clamping device 2 is composed of a clamping plate 201, a side mounting plate 202, a clamping wheel 203 and a work clamp 204. The clamping plate 201 is used to tighten the heat shrink tube sleeve 6. The side mounting plate 202 can move along the slide rail to adjust the gap. The clamping wheel 203 is symmetrically arranged on the side mounting plate 202. The clamping wheel 203 can flexibly adjust the gap for clamping heat shrink tube sleeves 6 of different specifications. The work clamp 204 specifically includes a clamping head on both sides and a support arm structure.

[0022] In the figure, a heating cylinder 3 is positioned at one end of the transmission device 1 and is used to precisely heat the heat shrink tubing 6. A primary heating coil 301 and a secondary heating coil 302 are located within the heating cylinder 3. The primary heating coil 301 is symmetrically and evenly spaced with a primary temperature sensor 3011 and a primary hot air outlet 3012. The secondary heating coil 302 is symmetrically and evenly spaced with a secondary temperature sensor 3021 and a secondary hot air outlet 3022. In this embodiment, the preheating mechanism includes eight air outlets around the air supply cylinder, which are used for primary preheating of the cable assembly heat shrink tubing and for shrinking and securing the tubing. The air supply mechanism includes an air supply cylinder with eight air outlets evenly spaced around the cylinder and a temperature sensor, which is used to uniformly output hot air of a specified power to shrink the tubing.

[0023] In the figure, the positioning device 4 is disposed within the heating cylinder 3 and is used to sense the position of the clamping device 2. The positioning device 4 includes a primary positioning device 401 and a secondary positioning device 402. The primary positioning device 401 is disposed in front of the primary heating coil 301, and the secondary positioning device 402 is disposed in front of the secondary heating coil 302. Specifically, the positioning device 4 can use a proximity displacement sensor to identify the approaching cable assembly and output a corresponding signal.

[0024] The figure also includes a caliper 7 arranged on one side of the transmission device 1, and the caliper 7 is used to detect the cable diameter of the cable assembly 5.

[0025] It should be noted that the control system includes a data acquisition device, a central controller, a display device, etc. The central controller 9 is respectively connected to the display device 8, the caliper 7, the positioning device 4, the first-level temperature sensor 3011, the second-level temperature sensor 3021, the first-level hot air blower and the second-level hot air blower, wherein: the central controller 9 accurately controls the heating time and heating temperature of the heat shrink tube sleeve 6 based on the cable diameter and current temperature of the cable assembly 5, the first-level hot air blower is connected to the first-level hot air outlet 3012 for first-level heating, and the second-level hot air blower is connected to the second-level hot air outlet 3022 for second-level heating.

[0026] During specific work, the electrical connector clamps on both sides are used to fix the electrical connectors at the ends, and the drive motor is used to drive the conveyor belt to automatically transport the cable assemblies in batches. When the electrical connector reaches the designated position, the first-level positioning device of the stroke will be triggered, and the two rows of adjustable automatic pressing wheels on both sides will automatically approach and press the heat shrink tubing, and start to pass through the 8 air outlet channels of the preheating mechanism to achieve the first-level pre-shrinkage of the heat shrink tubing, fix the relative position of the heat shrink tubing, and the automatic pressing wheel will be disengaged; when the cable assembly is automatically transported on the conveyor belt, the diameter gauge in the sensing device will automatically detect the diameter of the cable and heat shrink tubing, and transmit the relevant data to the control system, and the central controller will automatically adjust the heat shrink tubing according to the heat shrink tubing. The sleeve diameter matches the industrial experience value, and the temperature and wind speed required for the heat shrink sleeve in the air supply duct are preset; when the heat shrink sleeve of the cable assembly completes the first-level pre-shrinkage, the conveyor belt will continue to transport the cable assembly to position two, triggering the second-level positioning device of the stroke. At this time, the air supply duct of the air supply mechanism automatically adjusts the execution of the peripheral air outlets in combination with the air volume and temperature parameters transmitted by the central controller, and starts to evenly supply air to the heat shrink sleeve through 8 air outlets. At the same time, the system automatically detects and collects the temperature parameters of the output hot air based on the temperature sensor near the air outlet, and displays them in real time on the display of the air outlet system, thereby ensuring the quality consistency of the heat shrink sleeve during the heat shrink execution process.

[0027] It should be further explained that since a large amount of industrial experience matching data is stored in the central controller, the system will control the output hot air according to the optimal value required for the heat shrinkage of the heat shrink tubing, thereby completing the heat shrinkage process, which can greatly ensure the quality consistency of the heat shrinkage.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fully automatic precision heat shrink system based on cable assemblies, characterized in that: The invention comprises a transmission device (1), a clamping device (2), a heating cylinder (3) and a positioning device (4), wherein: The transmission device (1) is composed of a driving motor (101) and a conveyor belt (102), wherein the driving motor (101) drives the conveyor belt (102) to work via a reduction wheel; The clamping device (2) is detachably mounted on the conveyor belt (102) and is used to clamp the cable assembly (5) and fix the heat shrink tube (6) sleeved on the end of the cable assembly (5); The clamping device (2) is composed of a tightening plate (201), a side mounting plate (202), a pressing wheel (203) and a work clamp (204); the tightening plate (201) is used to tighten the heat shrink tube sleeve (6); the side mounting plate (202) can move along the slide rail to adjust the gap; the pressing wheel (203) is symmetrically arranged on the side mounting plate (202) and is used to press the heat shrink tube sleeve (6); The heating tube (3) is arranged at one end of the transmission device (1) and is used to accurately heat the heat shrink tube sleeve (6); The positioning device (4) is arranged in the heating cylinder (3) and is used to sense the position of the clamping device (2); A first-level heating coil (301) and a second-level heating coil (302) are provided inside the heating cylinder (3); a first-level temperature sensor (3011) and a first-level hot air outlet (3012) are symmetrically and equidistantly arranged on the first-level heating coil (301); a second-level temperature sensor (3021) and a second-level hot air outlet (3022) are symmetrically and equidistantly arranged on the second-level heating coil (302); The positioning device (4) comprises a primary positioning device (401) and a secondary positioning device (402), wherein the primary positioning device (401) is arranged in front of the primary heating ring (301), and the secondary positioning device (402) is arranged in front of the secondary heating ring (302); It also includes a caliper (7) arranged on one side of the transmission device (1), wherein the caliper (7) is used to detect the cable diameter of the cable assembly (5); It also includes a display device (8) and a central controller (9), wherein the central controller (9) is respectively connected to the display device (8), the caliper (7), the positioning device (4), the first-level temperature sensor (3011), the second-level temperature sensor (3021), the first-level hot air blower, and the second-level hot air blower, wherein: The central controller (9) accurately controls the heating time and heating temperature of the heat shrink tubing (6) based on the cable diameter and current temperature of the cable assembly (5); the first-level hot air blower is connected to the first-level hot air outlet (3012) for first-level heating, and the second-level hot air blower is connected to the second-level hot air outlet (3022) for second-level heating.

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