CN116277922A

CN116277922A - Drying and shrinking device and method for heating heat shrinking tube on wire harness product

Info

Publication number: CN116277922A
Application number: CN202310355411.1A
Authority: CN
Inventors: 陈黎丽; 武晨晨; 余光雷; 徐留杰
Original assignee: Shanghai Fl Dai Ichi Automotive Controllers Co ltd
Current assignee: Shanghai Fl Dai Ichi Automotive Controllers Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-06-23

Abstract

The invention discloses a drying and shrinking device for heating a heat shrinkage tube on a wire harness product, which belongs to the technical field of wire harness product production, and comprises an operation table provided with a heating avoidance area and a cooling avoidance area; the upper heating mechanism is arranged above the heating avoidance area and can be lifted; the lower heating mechanism is arranged below the heating avoidance area and can be lifted; cooling mechanisms arranged on the upper side and the lower side of the cooling avoidance area; the positioning wire carrying box is arranged on the operation table in a moving way; and the control module is used for controlling the upper heating mechanism and the lower heating mechanism to perform near-distance wind heating on the heat shrinkage tube in the positioning wire carrying box and controlling the cooling mechanism to perform wind cooling on the heat shrinkage tube. The invention adopts a local heating mode, and the upper heating mechanism and the lower heating mechanism which are folded at the periphery of the heat shrinkage tube are used for automatically heating the heat shrinkage tube on the wire harness product at fixed time and fixed temperature, so that the production efficiency of the wire harness product can be improved, and the quality of the wire harness product can be improved.

Description

Drying and shrinking device and method for heating heat shrinking tube on wire harness product

Technical Field

The invention relates to the technical field of wire harness product production, in particular to a drying and shrinking device for heating a heat shrinkage tube.

Background

For wire harness products, a heat shrinkage tube is required to be arranged at the connection point of the connector and the wire harness, so that the connection point between the connector and the wire harness can achieve the effects of insulation, sealing and water resistance through the baking of the heat shrinkage tube.

At present, two modes of baking and shrinking the heat-shrinkable tube mainly exist, namely, the first mode is manual baking and shrinking, namely, after the heat-shrinkable tube is sleeved at the position of the connecting point of the connector and the wire harness, a worker holds a hot air gun to heat the heat-shrinkable tube, so that the heat-shrinkable tube is covered on the connecting point of the connector and the wire harness; the manual baking and shrinking mode has the advantage of high yield of wire harness products, but the manual baking and shrinking mode has the problems of high labor intensity, high labor cost and low production efficiency, and has high dependence on the proficiency of operators.

The second is baking and shrinking of the baking oven, namely after the heat shrinkage tube is sleeved at the position of the connection point of the connector and the wire harness, fixing the whole wire harness product in a positioning die box, enabling the positioning die box to pass through the baking oven under the action of a transmission mechanism, and heating the heat shrinkage tube by utilizing heating wind in the baking oven so as to enable the heat shrinkage tube to be coated on the connection point of the connector and the wire harness; the oven-dried wire harness product has the advantages of high production efficiency and low production cost, and is adopted by a large number of manufacturers, but in actual production activities, the wire harness product baked by the oven has the problem of high rejection rate.

Therefore, how to simultaneously improve the production efficiency and the yield of the wire harness product is a technical problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention aims to provide a drying and shrinking device for heating a heat shrinking tube on a wire harness product, so as to solve the technical problems of low efficiency and low yield of the existing drying and shrinking method.

The technical scheme adopted by the invention is as follows: a crimping apparatus for heating a heat shrinkable tube on a wire harness product, comprising:

the operation table is provided with a heating avoidance area and a cooling avoidance area;

the upper heating mechanism can be arranged above the heating avoidance area in a lifting manner;

the lower heating mechanism can be arranged below the heating avoidance area in a lifting manner;

the cooling mechanisms are arranged at the upper side and the lower side of the cooling avoidance area;

the positioning wire carrying box is movably arranged on the operating platform, and the heating avoidance area and the cooling avoidance area are positioned on the moving path of the positioning wire carrying box;

the control module is in electric signal connection with the upper heating mechanism and the lower heating mechanism and can control the upper heating mechanism and the lower heating mechanism to reversely lift and heat the heat shrinkage pipe in the positioning wire carrying box which moves to the heating avoidance area at the upper side and the lower side in a near-distance wind-heat manner; the control module is electrically connected with the cooling mechanism and can control the cooling mechanism to wind-cool the heat shrinkage tube at the upper side and the lower side.

Preferably, the upper heating mechanism comprises an upper mounting frame, an upper hot air gun, an upper lifting cylinder and an upper heating block, wherein the upper mounting frame is fixedly arranged above the operating platform; the fixed end of the upper lifting cylinder is fixedly connected with the upper mounting frame, and the movable end is fixedly connected with the upper hot air gun; the upper heating block is arranged at the bottom end of the upper hot air gun, and is provided with an air supply hole which is communicated with an air outlet of the upper hot air gun and used for supplying heating air to the upper side of the heat shrinkage pipe.

Preferably, the lower heating mechanism comprises a lower mounting frame, a lower hot air gun, a lower lifting cylinder and a lower heating block, wherein the lower mounting frame is fixedly arranged below the operating platform; the fixed end of the lower lifting cylinder is fixedly connected with the lower mounting frame, and the movable end is fixedly connected with the lower hot air gun; the lower heating block is arranged at the top end of the lower heat gun, and is provided with a wind feeding hole which is communicated with the air outlet of the lower heat gun and used for feeding heating wind to the lower side of the heat shrinkage tube.

Preferably, an arc-shaped accommodating groove is formed in one side, close to each other, of the upper heating block and the lower heating block, and the air supply holes are distributed at intervals along the axial linear direction and the circumferential direction of the arc-shaped accommodating groove; and an air inlet hole is formed in one side, away from each other, of the upper heating block and the lower heating block, and the air inlet hole is communicated with the air supply hole through an air supply channel.

Preferably, the cooling mechanism comprises an upper cooling air nozzle and a lower cooling air nozzle, the upper cooling air nozzle is arranged right above the cooling avoidance area and fixedly connected with the upper mounting frame, and the lower cooling air nozzle is arranged right below the cooling avoidance area.

Preferably, the positioning wire carrying box comprises a positioning frame and a box body, and the positioning frame is connected with the operating platform in a sliding manner along the direction of a moving path; the two box bodies are arranged at intervals along the direction of the vertical moving path and fixedly connected with the locating frame, and locating holes for fixing wire harness products and enabling the heat shrinkage pipe to be suspended above the heating avoidance area or the cooling avoidance area are formed in the box bodies.

Preferably, a guide sliding rail is arranged on the operating platform, and two ends of the positioning frame are in sliding connection with the guide sliding rail; an electric sliding table is arranged below the operation table, and a sliding part of the electric sliding table upwards penetrates through a guide slot hole of the operation table and is fixedly connected with the positioning frame.

Preferably, the number of the positioning holes is a plurality.

Preferably, the control module comprises a temperature control unit and a time control unit, wherein the temperature control unit can control the upper heating mechanism and the lower heating mechanism to perform constant-temperature wind heating on the heat shrinkage tube; the time control unit can control the upper heating mechanism and the lower heating mechanism to perform timing wind heating on the heat shrinkage tube.

Another object of the present invention is to provide a heat shrink tube drying and shrinking method using the above drying and shrinking apparatus for heating heat shrink tubes on wire harness products, the method comprising the steps of:

s10: the wire harness product sleeved with the heat shrink tube is placed into a positioning hole of a positioning wire carrying box, so that the position of the heat shrink tube is fixed through the positioning hole;

s20: moving the heat shrinkage tube to a heating avoiding area along a moving path through the positioning wire carrying cassette, wherein part or all of the heat shrinkage tube is positioned under the upper heating block;

s30: the control module controls the upper heating block and the lower heating block to lift and fold on the periphery of the heat shrinkage tube;

s40: the control module is used for controlling the upper and lower heat guns to convey heating air with preset temperature to the upper and lower sides of the heat shrinkage tube and heating the heat shrinkage tube for preset time length, so that the heat shrinkage tube is heated and retracted by the heating air among the upper heating block, the lower heating block and the heat shrinkage tube;

s50: the upper heating mechanism and the lower heating mechanism are controlled by the control module to be far away from the heat shrinkage tube;

s60: repeating the steps S20-S50 until the baking and shrinking operation of the heat shrinkage tube on all the wire harness products is completed;

s70: the positioning wire carrying box drives the heat shrinkage pipe to move to the cooling avoidance area along the moving path, and then the control module controls the upper cooling air nozzle and the lower cooling air nozzle to convey cooling air to the upper side and the lower side of the heat shrinkage pipe.

The invention has the beneficial effects that:

according to the invention, a principle of partial replacement of the whole is adopted, the upper heating mechanism and the lower heating mechanism which can reversely lift are correspondingly arranged on the upper side and the lower side of the operating platform, when a wire harness product on the positioning wire box moves to a heating avoidance area, the upper heating mechanism and the lower heating mechanism can oppositely lift to the periphery side of the heat shrinkage tube, so that the upper heating mechanism and the lower heating mechanism can carry out close-range hot air drying and shrinking on the heat shrinkage tube in the circumferential direction, the fixed-point heating of the heat shrinkage tube on the wire harness product is realized, and the influence of heating air on the wire harness product is avoided; when the wire harness product after drying and shrinking moves to the cooling avoidance area, the air cooling mechanism can be used for cooling the upper side and the lower side of the wire harness product, and retraction and fixation of the heat shrinkage tube on the wire harness product are completed, so that the qualification rate of the wire harness product can be improved, the production efficiency of the wire harness product can be improved, and the production cost is reduced.

The control module comprises the temperature control unit and the time control unit, so that the heat shrinkage pipe on the wire harness product can be subjected to close-range hot air drying at a fixed time and a fixed temperature, the retraction quality of the heat shrinkage pipe and the quality of the wire harness product can be ensured, and the controllability of the wire harness product production process and the consistency of the production quality are improved.

The positioning wire carrying box adopts a one-die multi-hole design, and a plurality of positioning holes which are arranged in parallel are formed on the positioning wire carrying box, so that the wire carrying box can be moved up and down for a plurality of times in one moving stroke of the positioning wire carrying box, the retraction operation of the heat shrinkage tubes of a plurality of wire harness products is finished, and the drying efficiency of the heat shrinkage tubes is improved.

Drawings

FIG. 1 is a schematic perspective view of a heating and shrinking apparatus for heating heat shrinkable tubing on a wire harness product according to the present invention;

FIG. 2 is a front view of a shrink device for heating heat shrink tubing on a wire harness product according to the present invention;

FIG. 3 is a side view of a shrink device for heating heat shrink tubing on a wire harness product according to the present invention;

FIG. 4 is a schematic diagram showing the connection of the upper heating mechanism, the positioning wire carrying box and the operation table in the present invention;

FIG. 5 is a schematic diagram showing the connection of the lower heating mechanism, the electric slipway and the operation table in the present invention;

FIG. 6 is a schematic view of the structure of the console according to the present invention;

FIG. 7 is a schematic view of the structure of the upper and lower heating blocks of the present invention;

fig. 8 is a schematic diagram of the upper and lower heating blocks versus the heat shrink tube.

The reference numerals in the drawings illustrate:

100. an operation table;

110. heating the avoidance zone; 120. cooling the avoidance zone; 130. a guide slot; 140. a guide rail;

200. an upper heating mechanism;

210. an upper lifting cylinder; 220. feeding a hot air gun; 230. an upper heating block; 240. an upper mounting frame;

231. an arc-shaped accommodating groove; 232. a wind supply hole; 233. an air inlet hole; 234. an air supply channel;

300. a lower heating mechanism;

310. a lower lifting cylinder; 320. a lower hot air gun; 330. a lower heating block; 340. a lower mounting frame;

400. a cooling mechanism;

410. a cooling air nozzle is arranged on the upper part; 420. a lower cooling tuyere;

500. positioning a wire carrying box;

510. a case body; 520. a positioning frame;

600. a control module;

700. an electric sliding table;

710. a mounting plate; 720. a guide part; 730. a sliding part;

800. an outer frame;

900. and (5) heat shrinking pipe.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to be limiting.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

1-8, a drying and shrinking device for heating a heat shrinkage tube on a wire harness product can perform fixed-point heating on the heat shrinkage tube on the wire harness product (fixed-point heating refers to heating only the heat shrinkage tube 900 on the wire harness product, that is, performing local hot air heating on the wire harness product), so that the heat shrinkage tube is retracted and fixed on the wire harness product under the action of heating air, and the influence of the heating air on the high temperature of the wire harness product is reduced, that is, the heating air is prevented from contacting with other wire harness product positions except the heat shrinkage tube, because the heating air acts on other positions of the wire harness product for a certain period of time, the qualified product rate of the wire harness product is reduced. The drying and shrinking device comprises:

a console 100, and a heating avoidance area 110 and a cooling avoidance area 120 are provided on the console 100.

And an upper heating mechanism 200, wherein the upper heating mechanism 200 is arranged above the heating avoidance area 110 in a lifting manner, and is used for performing near-distance wind heating (near-distance hot wind heating) on the upper side of the upper heat shrinkage tube 900 of the wire harness product.

And a lower heating mechanism 300, wherein the lower heating mechanism 300 is arranged below the heating avoidance area 110 in a lifting manner and is used for carrying out near-distance wind heat on the lower side of the heat shrinkage tube 900 on the wire harness product.

And the cooling mechanism 400 is arranged on the upper side and the lower side of the cooling avoidance area 120, and is used for cooling the upper side and the lower side of the heat shrinkage tube 900 on the wire harness product by air-cooling.

The positioning wire carrying box 500 is movably arranged on the operation table 100, and the heating avoidance area 110 and the cooling avoidance area 120 are positioned on the moving path of the positioning wire carrying box 500, that is, the positioning wire carrying box 500 can move between the heating avoidance area 110 and the cooling avoidance area 120.

The control module 600 is respectively connected with the upper heating mechanism 200 and the lower heating mechanism 300 in an electric signal manner, and the control module 600 can control the upper heating mechanism 200 and the lower heating mechanism 300 to reversely lift and lower, so that the upper heating mechanism 200 and the lower heating mechanism 300 can heat the heat shrinkage tube 900 in the positioning wire carrying box 500 which moves to the heating avoidance area 110 in a short distance at the upper side and the lower side; the control module 600 is electrically connected with the cooling mechanism 400, and the control module 600 can control the cooling mechanism 400 to perform air cooling on the heat shrinkage tube 900 at the upper side and the lower side.

This application adopts the local whole mode of replacing, it can reverse lift go up heating mechanism 200 and lower heating mechanism 300 to correspond to install in the upper and lower both sides of operation panel 100, when the pencil product on the location year line box 500 moves to the heating along the removal route and dodges district 110, the accessible is gone up heating mechanism 200 and lower heating mechanism 300 subtend and is gone up to the week side of pyrocondensation pipe 900 for pyrocondensation pipe 900 parcel is last between heating mechanism 200 and lower heating mechanism 300, with through last heating mechanism 200 and lower heating mechanism 300 to the closely hot-blast shrink of pyrocondensation pipe 900 in the circumferencial direction, realize the fixed point heating of pyrocondensation pipe 900 on the pencil product, the influence of heating wind to the pencil product has been avoided. When the baked wire harness product moves to the cooling avoidance area 120 along the moving path, the air cooling of the upper side and the lower side of the wire harness product can be realized through the cooling mechanism 400, and the retraction and fixation of the heat shrinkage tube 900 on the wire harness product are completed, so that the qualified product rate of the wire harness product can be improved, the production efficiency of the wire harness product can be improved, and the production cost can be reduced.

In one embodiment, as shown in fig. 1, 2, 3, and 7, the upper heating mechanism 200 includes an upper mounting frame 240, an upper heat gun 220, an upper lift cylinder 210, and an upper heating block 230; wherein the upper mounting frame 240 is fixedly disposed above the console 100; the upper lifting cylinder 210 is arranged along the vertical direction, and the fixed end of the upper lifting cylinder 210 is fixedly connected with the upper mounting frame 240, and the moving end of the upper lifting cylinder 210 is fixedly connected with the upper hot air gun 220, so that the upper hot air gun 220 can be driven to ascend or descend when the upper lifting cylinder 210 stretches and contracts; the upper heating block 230 is disposed at the bottom end of the upper heat gun 220, and the upper heating block 230 is provided with an air supply hole 232 for supplying heating air to the upper side of the heat shrinkage tube 900, and the air supply hole 232 is communicated with an air outlet of the upper heat gun 220, so that the heating air outputted from the upper heat gun 220 can flow to the upper side of the upper heat shrinkage tube 900 of the wire harness product through the air supply hole 232.

This is so arranged because: the upper heat gun 220 and the upper heating block 230 can be driven to lift by the expansion and contraction of the upper lifting cylinder 210, so that the upper heating block 230 is close to the heat shrinkage pipe 900 or far from the heat shrinkage pipe 900; the heating air is conveyed to the heat shrinkage tube 900 through the upper hot air gun 220, so that the temperature requirement of the heat shrinkage tube 900 during heat shrinkage can be met, the flow of the heating air is guided through the air supply hole 232 on the upper heating block 230, the heating air can flow to the upper side of the heat shrinkage tube 900, and the influence of the heating air on the quality of a wire harness product is avoided.

Preferably, the number of the upper heating blocks 230 may be one or more; when the number of the upper heating blocks 230 is plural, the plural upper heating blocks 230 need to be disposed at equal intervals along the moving path direction of the positioning lane box 500.

In one embodiment, as shown in fig. 1, 2, 5, and 7, the lower heating mechanism 300 includes a lower mounting frame 340, a lower heat gun 320, a lower lift cylinder 310, and a lower heating block 330; wherein the lower mounting frame 340 is fixedly disposed under the console 100; the lower lifting cylinder 310 is arranged along the vertical direction, and the fixed end of the lower lifting cylinder 310 is fixedly connected with the lower mounting frame 340, and the movable end of the lower lifting cylinder 310 is fixedly connected with the lower hot air gun 320, so that the lower hot air gun 320 can be driven to ascend or descend when the lower lifting cylinder 310 stretches and contracts; the lower heating block 330 is disposed at the top end of the lower heat gun 320, and the lower heating block 330 is provided with an air supply hole 232 for supplying heating air to the lower side of the heat shrinkage tube 900, and the air supply hole 232 is communicated with an air outlet of the lower heat gun 320, so that the heating air outputted from the lower heat gun 320 can flow to the lower side of the heat shrinkage tube 900 on the wire harness product through the air supply hole 232.

This is so arranged because: the lower heat gun 320 and the lower heating block 330 can be driven to ascend or descend by the expansion and contraction of the lower lifting cylinder 310, so that the lower heating block 330 is close to the heat shrinkage pipe 900 or far away from the heat shrinkage pipe 900; the heating air is conveyed to the heat shrinkage pipe 900 through the lower hot air gun 320, so that the temperature requirement of the heat shrinkage pipe 900 during heat shrinkage can be met, the flow of the heating air is guided through the air supply hole 232 under the lower heating block 330, the heating air can flow to the lower side of the heat shrinkage pipe 900, and the influence of the heating air on the quality of a wire harness product is avoided.

Preferably, the number of the lower heating blocks 330 is one or more, and when the number of the lower heating blocks 330 is more than one, the plurality of lower heating blocks 330 need to be disposed at equal intervals along the moving path direction of the positioning wire box 500.

In a specific embodiment, as shown in fig. 7 and 8, an arc-shaped receiving groove 231 is formed at one side of the upper heating block 230 and the lower heating block 330, which are close to each other, that is, the bottom end of the upper heating block 230 is formed with the arc-shaped receiving groove 231, and the top end of the lower heating block 330 is formed with the arc-shaped receiving groove 231; on the groove wall of the arc-shaped receiving groove 231, a plurality of air-sending holes 232 are spaced apart along the axial direction and the circumferential direction of the arc-shaped receiving groove 231, that is, the plurality of air-sending holes 232 are equally spaced apart in the circumferential direction, and simultaneously the plurality of air-sending holes 232 are equally spaced apart in the axial direction.

An air inlet 233 is formed at a side of the upper heating block 230 and the lower heating block 330 which are far from each other, that is, an air inlet 233 is formed at a top end of the upper heating block 230, an air inlet 233 is formed at a bottom end of the lower heating block 330, and the air inlets 233 are communicated with the air inlet 232 one by one through an air supply channel 234.

The arc-shaped accommodating groove 231 of the upper heating block 230 and the arc-shaped accommodating groove 231 of the lower heating block 330 can form a complete round hole, and the radial dimension of the round hole is larger than the radial dimension of the heat shrink tube 900, so that after the upper heating block 230 and the lower heating block 330 are abutted, namely, the two arc-shaped accommodating grooves 231 are folded into a complete circle, an annular gap can be formed between the heat shrink tube 900 and the upper heating block 230 and between the upper heating block 330 and the lower heating block 330, and the heating gas can flow along the circumferential direction of the heat shrink tube 900, so that 360-degree dead-angle-free wind heat of the heat shrink tube 900 is realized.

This is so arranged because: after the upper heating block 230 and the lower heating block 330 are contacted, the arc-shaped accommodating groove 231 of the upper heating block 230 and the arc-shaped accommodating groove 231 of the lower heating block 330 can form a complete round hole, and the heat shrinkage tube 900 is coaxially positioned in the round hole, so that an annular gap is formed between the heat shrinkage tube 900 and the upper heating block 230 and between the heat shrinkage tube 330, the heat shrinkage tube 900 can flow along the circumferential direction, and the outflow of heating air is prevented, the drying shrinkage effect of the heat shrinkage tube 900 can be ensured, and the influence of the heating air on a wire harness product can be reduced to the greatest extent.

In a specific embodiment, as shown in fig. 1, 2, 3, 4 and 5, the operation table 100 is integrally plate-shaped and fixedly installed in the middle of the outer frame 800, a heating avoidance area 110 and a cooling avoidance area 120 are disposed on the operation table 100, and the heating avoidance area 110 and the cooling avoidance area 120 are located on a moving path of the positioning wire carrying box 500; the cooling mechanism 400 includes an upper cooling tuyere 410 and a lower cooling tuyere 420; wherein, the upper cooling tuyere 410 is arranged right above the cooling avoidance zone 120, and the upper cooling tuyere 410 is fixedly connected with the upper mounting frame 240; the lower cooling tuyere 420 is disposed right below the cooling avoidance region 120.

Specifically, the heating avoidance area 110 and the cooling avoidance area 120 are long slots vertically penetrating the console 100.

Preferably, the number of the upper cooling air nozzles 410 is plural, and the plurality of upper cooling air nozzles 410 are linearly arranged along the direction of the moving path of the positioning wire carrying case 500; the number of the lower cooling air nozzles 420 is plural, and the plurality of lower cooling air nozzles 420 are linearly arranged along the moving path direction of the positioning carrier tape box 500.

In one embodiment, as shown in fig. 4, the positioning wire-carrying box 500 includes a positioning frame 520 and a box body 510, the positioning frame 520 is in a shape like a Chinese character 'hui', and two ends of the positioning frame 520 perpendicular to the moving path direction of the positioning wire-carrying box 500 are slidably connected with the console 100; the number of the box bodies 510 is two, the two box bodies 510 are arranged at intervals along the direction of the vertical moving path, and the two box bodies 510 are fixedly connected with the two ends of the positioning frame 520 in a one-to-one correspondence manner; the box 510 is provided with a positioning hole for fixing the wire harness product, and the positioning hole is arranged along the direction of the vertical moving path, so that the heat shrinkage tube 900 can be suspended right above the heating avoidance area 110 or the cooling avoidance area 120.

Preferably, as shown in fig. 4, the number of the positioning holes is plural, and the positioning holes are equally spaced in the direction of the moving path.

In one embodiment, as shown in fig. 4, 5 and 6, the operation platform 100 is provided with two guide rails 140, and the guide rails 140 are disposed along the direction of the moving path of the positioning wire carrying case 500 and are located at two ends of the direction of the vertical moving path of the operation platform 100; the two ends of the positioning frame 520 are slidably connected with the two guiding rails 140 in a one-to-one correspondence manner, so as to guide the movement of the positioning wire carrying box 500 on the console 100, so as to ensure the straightness when the positioning wire carrying box 500 moves.

An electric sliding table 700 electrically connected with the control module 600 is arranged below the operation table 100, the electric sliding table 700 comprises a mounting plate 710, a guiding part 720 and a sliding part 730, wherein the mounting plate 710 is fixedly arranged right below the operation table 100, the guiding part 720 is fixedly arranged on the mounting plate 710, the sliding part 730 can be mounted on the guiding part 720 in a reciprocating sliding manner, and a guiding slotted hole 130 is arranged on the operation table 100, and the guiding slotted hole 130 is arranged in parallel with the guiding sliding rail 140; the top end of the sliding portion 730 passes through the guide slot 130 and is fixedly connected with the positioning frame 520, so that the sliding portion 730 slides reciprocally on the guide portion 720 to drive the positioning wire carrying box 500 to move reciprocally along the moving path between the heating avoiding area 110 and the cooling avoiding area 120.

In one embodiment, the control module 600 includes at least a temperature control unit and a time control unit; the temperature control unit can control the upper heating mechanism 200 and the lower heating mechanism 300 to perform constant-temperature wind heating on the heat shrinkage tube 900, that is, the temperature control unit can control the temperature of heating wind conveyed to the heat shrinkage tube 900 by the upper heating mechanism 200 and the lower heating mechanism 300; the time control unit can control the upper heating mechanism 200 and the lower heating mechanism 300 to perform timing wind heating on the heat shrinkage tube 900, that is, the time control unit can control the duration of heating wind which is conveyed to the heat shrinkage tube 900 by the upper heating mechanism 200 and the lower heating mechanism 300.

This is so arranged because: the upper heating mechanism 200 and the lower heating mechanism 300 are heated at fixed time and fixed temperature through the temperature control unit and the time control unit, so that the controllability and the quality consistency in the production process of the wire harness product can be improved.

An embodiment, a shrink tube baking method, the method uses the above baking device for heating the shrink tube on the wire harness product, the method includes the following steps:

s10: at the initial position of the positioning wire carrying box 500, a plurality of wire harness products sleeved with the heat shrink tubes 900 are sequentially placed into positioning holes of the positioning wire carrying box 500, and the positions of the heat shrink tubes 900 are fixed through the positioning holes.

S20: the electric sliding table 700 is started, the positioning wire carrying box 500 is driven by the electric sliding table 700 to move to the heating avoidance area 110 along the moving path, and the heat shrinkage pipe 900 of at least one wire harness product is positioned under the upper heating block 230.

S30: the upper heating mechanism 200 and the lower heating mechanism 300 are controlled to synchronously lift by the control module 600 until the upper heating block 230 and the lower heating block 330 are folded at the circumference of the heat shrinkage tube 900, that is, the upper heating block 230 and the lower heating block 330 wrap the heat shrinkage tube 900 on the wire harness product.

S40: the upper and

lower heat guns

220 and 320 are controlled by the control module 600 to deliver heating air of a preset temperature to the upper and lower sides of the heat shrinkage tube 900 and heat the heat shrinkage tube 900 for a preset period of time, so that the heat shrinkage tube 900 is heated and retracted by the heating air between the upper and lower heating blocks 230 and 330 and the heat shrinkage tube 900.

S50: after the heating time is reached, the upper heating mechanism 200 and the lower heating mechanism 300 are controlled to synchronously lift by the control module 600 to release the heat shrinkage tube 900, that is, the control module 600 controls the upper heating mechanism 200 and the lower heating mechanism 300 to be far away from the heat shrinkage tube 900.

S60: and repeating the steps S20 to S50 until the baking and shrinking operation of the heat shrinkable tube 900 on all the wire harness products is completed.

S70: firstly, the positioning wire carrying box 500 is driven by the electric sliding table 700 to move along a moving path from the heating avoidance area 110 to the cooling avoidance area 120, and at least part of the heat shrinkage pipe 900 on the wire harness product is positioned between the upper cooling air nozzle 410 and the lower cooling air nozzle 420; and then the control module 600 controls the upper cooling air nozzle 410 and the lower cooling air nozzle 420 to convey cooling air to the upper side and the lower side of the heat shrinkage tube 900, so that the cooling of the wire harness product is realized, and the wire harness product is prevented from being scalded due to overheating of the wire harness product.

Until the heat shrinkage tubes 900 on all the wire harness products are cooled, the positioning wire carrying box 500 is retracted to the initial position along the moving path, and the wire harness products are taken out.

Compared with the prior art, the application has at least the following beneficial technical effects:

(1) Compared with the traditional heating mode, the traditional heating mode is used for integrally heating the wire harness product and the positioning wire carrying box, and the wire harness product and the positioning wire carrying box are easy to overheat in the retraction process of the heat shrinkage tube, so that the wire harness product and the positioning box are scalded and cannot be used when deformed. The lifting of the upper heating block and the lower heating block is utilized, and the heat shrinkage tube of the wire harness product is heated at fixed points, so that the wire harness product and the positioning wire carrying box are not damaged.

(2) The positioning wire carrying box in the application adopts a one-die multi-hole design, can be moved up and down for a plurality of times in one sliding stroke, further completes the retraction process of the heat shrinkage tube of a plurality of wire harness products, and improves the working efficiency.

(3) The temperature and time dual control mode is adopted, the process parameters are immobilized, and the controllability and the quality consistency in the production process of the wire harness product are improved.

The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims

1. A drying and shrinking apparatus for heating heat shrinkable tubing on a wire harness product, comprising:

the operation table (100), the operation table (100) is provided with a heating avoidance area (110) and a cooling avoidance area (120);

the upper heating mechanism (200) can be arranged above the heating avoidance area (110) in a lifting manner;

the lower heating mechanism (300) is arranged below the heating avoidance area (110) in a lifting manner;

the cooling mechanism (400) is arranged at the upper side and the lower side of the cooling avoidance area (120);

the positioning wire carrying box (500) is movably arranged on the operating platform (100), and the heating avoidance area (110) and the cooling avoidance area (120) are positioned on the moving path of the positioning wire carrying box (500);

the control module (600) is electrically connected with the upper heating mechanism (200) and the lower heating mechanism (300) and can control the upper heating mechanism (200) and the lower heating mechanism (300) to reversely lift and heat the heat shrinkage pipe (900) in the positioning wire carrying box (500) which moves to the heating avoidance area (110) at the upper side and the lower side in a near-distance wind heat mode; the control module (600) is electrically connected with the cooling mechanism (400) and can control the cooling mechanism (400) to perform air cooling on the heat shrinkage tube (900) at the upper side and the lower side.

2. The drying and shrinking apparatus for heating heat shrink tubing on a wire harness product according to claim 1, wherein the upper heating mechanism (200) comprises an upper mounting frame (240), an upper heat gun (220), an upper lifting cylinder (210) and an upper heating block (230), the upper mounting frame (240) being fixedly arranged above the operation table (100); the fixed end of the upper lifting cylinder (210) is fixedly connected with the upper mounting frame (240), and the movable end is fixedly connected with the upper hot air gun (220); the upper heating block (230) is arranged at the bottom end of the upper heat gun (220), and an air supply hole (232) which is communicated with an air outlet of the upper heat gun (220) and used for conveying heating air to the upper side of the heat shrinkage tube (900) is arranged on the upper heating block (230).

3. A drying and shrinking apparatus for heating heat shrink tubing on a strand product according to claim 2, wherein the lower heating mechanism (300) comprises a lower mounting frame (340), a lower heat gun (320), a lower lift cylinder (310) and a lower heating block (330), the lower mounting frame (340) being fixedly disposed below the console (100); the fixed end of the lower lifting cylinder (310) is fixedly connected with the lower mounting frame (340), and the movable end is fixedly connected with the lower hot air gun (320); the lower heating block (330) is arranged at the top end of the lower heat gun (320), and the lower heating block (330) is provided with an air supply hole (232) which is communicated with an air outlet of the lower heat gun (320) and is used for conveying heating air to the lower side of the heat shrinkage tube (900).

4. A drying and shrinking apparatus for heating heat shrinkable tubes on wire harness products according to claim 3, characterized in that an arc-shaped accommodating groove (231) is provided on one side of the upper heating block (230) and the lower heating block (330) which are close to each other, and a plurality of air supply holes (232) are distributed at intervals along the axial direction linearity and the circumferential direction of the arc-shaped accommodating groove (231); an air inlet (233) is formed in one side, away from each other, of the upper heating block (230) and the lower heating block (330), and the air inlet (233) is communicated with the air inlet (232) through an air supply channel (234).

5. The drying and shrinking apparatus for heating heat shrinkable tubes on wire harness products according to any one of claims 2 to 4, wherein the cooling mechanism (400) comprises an upper cooling tuyere (410) and a lower cooling tuyere (420), the upper cooling tuyere (410) is disposed right above the cooling avoidance zone (120) and fixedly connected with the upper mounting frame (240), and the lower cooling tuyere (420) is disposed right below the cooling avoidance zone (120).

6. The drying and shrinking device for heating heat shrink tubes on wire harness products according to claim 1, wherein the positioning wire carrying box (500) comprises a positioning frame (520) and a box body (510), and the positioning frame (520) is slidingly connected with the operating table (100) along the moving path direction; the two box bodies (510) are arranged along the direction of the vertical moving path at intervals and are fixedly connected with the locating frame (520), and locating holes used for fixing wire harness products and enabling the heat shrinkage tube (900) to be suspended above the heating avoidance area (110) or the cooling avoidance area (120) are formed in the box bodies (510).

7. The drying and shrinking device for heating heat shrinking tubes on wire harness products according to claim 6, wherein a guiding sliding rail (140) is arranged on the operating table (100), and two ends of the positioning frame (520) are in sliding connection with the guiding sliding rail (140); an electric sliding table (700) is arranged below the operation table (100), and a sliding part of the electric sliding table (700) upwards penetrates through a guide slot hole (130) of the operation table (100) and is fixedly connected with a positioning frame (520).

8. The apparatus of claim 6, wherein the number of locating pockets is a plurality of locating pockets.

9. A drying and shrinking apparatus for heating heat shrink tubing on a wire harness product according to claim 1, wherein the control module (600) comprises a temperature control unit and a time control unit, the temperature control unit being capable of controlling the upper heating mechanism (200) and the lower heating mechanism (300) to perform constant temperature wind heating on the heat shrink tubing (900); the time control unit can control the upper heating mechanism (200) and the lower heating mechanism (300) to perform timing wind heating on the heat shrinkage tube (900).

10. A heat shrinkage tube drying and shrinking method using the drying and shrinking apparatus for heating heat shrinkage tubes on wire harness products according to any one of claims 1 to 9, characterized in that the method comprises the steps of:

s10: the wire harness product sleeved with the heat shrinkage tube (900) is placed into a positioning hole of a positioning wire carrying box (500) so as to fix the position of the heat shrinkage tube (900) through the positioning hole;

s20: the heat shrinkage tube (900) is driven by the positioning wire carrying box (500) to move to the heating avoidance area (110) along a moving path, and part or all of the heat shrinkage tube (900) is positioned under the upper heating block (230);

s30: the upper heating block (230) and the lower heating block (330) are controlled to lift and fold at the periphery of the heat shrinkage tube (900) through the control module (600);

s40: the control module (600) is used for controlling the upper heat gun (220) and the lower heat gun (320) to convey heating air with preset temperature to the upper side and the lower side of the heat shrinkage tube (900) and heat the heat shrinkage tube (900) for a preset time period, so that the heat shrinkage tube (900) is heated and retracted by utilizing the heating air among the upper heating block (230), the lower heating block (330) and the heat shrinkage tube (900);

s50: the upper heating mechanism (200) and the lower heating mechanism (300) are controlled to be far away from the heat shrinkage tube (900) through the control module (600);

s60: repeating the steps S20-S50 until the baking and shrinking operation of the heat shrinkage tube (900) on all the wire harness products is completed;

s70: the heat shrinkage tube (900) is driven by the positioning wire carrying box (500) to move to the cooling avoidance area (120) along the moving path, and then the upper cooling air nozzle (410) and the lower cooling air nozzle (420) are controlled by the control module (600) to convey cooling air to the upper side and the lower side of the heat shrinkage tube (900).