CN111070660A - Full-automatic heat-shrinkable tube jacketing machine and jacketing method - Google Patents

Abstract

The invention provides a full-automatic heat-shrinkable tube jacketing machine and a jacketing method, wherein the jacketing machine comprises: a heat shrinkable tube supply part adapted to supply a heat shrinkable tube; a heat shrinkable tube transfer part having a fixing rod adapted to fix the heat shrinkable tube and transfer the heat shrinkable tube to a predetermined tube passing position; the wire harness fixing device comprises a pipe penetrating part, a fixing rod and a feeding wire harness, wherein the pipe penetrating part is provided with a clamping channel, a first opening of the clamping channel is used for inserting a wire harness, a second opening of the clamping channel is used for pulling out a fixing rod, and a through hole communicated with the outside is formed in the clamping channel; and a hot air flow supply part which supplies hot air flow to the pipe penetrating part. Therefore, the coating quality of the heat shrinkable tube on the lead terminal can be improved, and the sleeve precision of the heat shrinkable tube is improved.

Description

Full-automatic heat-shrinkable tube jacketing machine and jacketing method

Technical Field

The invention relates to the technical field of wire harness processing equipment, in particular to a full-automatic heat-shrinkable tube jacketing machine and a jacketing method.

Background

The sheathing of the heat shrinkable tube on the insulated distribution wire is a necessary step for processing and manufacturing the distribution line. The heat-shrinkable tube is sleeved on the wire terminal and is heated and fastened, so that the terminal and the wire can be effectively protected in an insulation manner.

The traditional heat shrinkable tube sleeving work is finished manually, the production efficiency is low, the labor cost is high, and therefore a heat shrinkable tube sleeving machine with high automation degree appears in the market. However, in the product after the heat shrinkable tube is machined in the related art, the wrapping quality of the heat shrinkable tube on the wire terminal is poor, the pipe orifice of the heat shrinkable tube cannot be flush with the end surface of the terminal, and a large error exists.

Disclosure of Invention

The invention aims to solve at least one of the technical problems in the technology to a certain extent, namely, the coating quality of the heat shrinkable tube on the lead terminal is improved, the tube opening of the heat shrinkable tube is flush with the end face of the terminal, and the sleeve precision of the heat shrinkable tube is improved. To this end, an object of the present invention is to provide a fully automatic heat shrinkable tube jacketing machine.

Another object of the present invention is to provide a method of sleeving a heat shrinkable tube.

To achieve the above object, the present invention provides in one aspect a full-automatic heat shrinkable tube jacketing machine, comprising: a heat shrinkable tube supply part, a heat shrinkable tube transfer part, a tube penetration part and a hot air flow supply part;

the heat shrinkable tube supply part is suitable for supplying a heat shrinkable tube;

the heat shrinkable tube transferring part is provided with a fixing rod, and the fixing rod is suitable for fixing the heat shrinkable tube and transferring the heat shrinkable tube supplied by the heat shrinkable tube supplying part to a preset tube penetrating position;

the penetrating pipe part is provided with a clamping channel, a first opening of the clamping channel is used for inserting a wire harness, a second opening of the clamping channel is used for pulling out the fixed rod, and a through hole communicated with the outside is arranged on the clamping channel;

the hot air flow supply part is suitable for supplying hot air flow to the clamping channel.

According to the full-automatic heat shrinkable tube jacketing machine, the heat shrinkable tube is fixed through the fixing rod and is transferred to the preset tube penetrating position, so that when the fixing rod transfers the heat shrinkable tube to the tube penetrating position, the fixing rod is matched with the limiting unit of the tube penetrating part, and the heat shrinkable tube can be accurately positioned at the tube penetrating position; when the wiring harness is inserted into the heat shrinkable tube through the limiting unit of the through tube part, the end face of the wiring harness terminal can be flush with the tube opening of the heat shrinkable tube; the heat shrinkable tube and the wire harness are kept still after flushing, the heat shrinkable tube is fixed on the wire harness by supplying hot air to the clamping channel, and therefore the position accuracy of the heat shrinkable tube sleeve is guaranteed, the wrapping quality of the heat shrinkable tube on a wire terminal is improved, the port of the heat shrinkable tube and the end face of the terminal are enabled to be flush, and the sleeve accuracy of the heat shrinkable tube is improved.

In addition, the fully-automatic heat shrinkable tube jacketing machine provided by the embodiment of the invention can also have the following additional technical characteristics:

according to an embodiment of the present invention, the heat shrinkable tube supply part has a heat shrinkable tube feeding member that conveys a wound heat shrinkable tube in which the same type of heat shrinkable tubes are juxtaposed and connected on the strip-shaped carrier to a predetermined cutting position, and a cutting blade for cutting and supplying the heat shrinkable tube from the wound heat shrinkable tube located at the cutting position, the cutting blade being in a scissor structure.

According to an embodiment of the invention, the cutting edge comprises a first blade and a second blade, the cutting edge of the first blade and the cutting edge of the second blade are opposite and staggered to define a shear opening together; the first blade and the second blade are connected with an opening and closing driving piece so as to drive the first blade and the second blade to move in an opening and closing mode through the opening and closing driving piece, and the heat shrinkable tube is cut by the shearing opening.

According to an embodiment of the present invention, the heat shrinkable tube supply part includes a calibration tube having an inner diameter equal to an outer diameter of the heat shrinkable tube, the calibration tube being vertically arranged and perpendicular to the cutout.

According to the embodiment of the invention, the fixing rod is provided with a plurality of grooves which are inwards concave along the radial direction of the fixing rod, and the plurality of grooves are circumferentially distributed on the outer circumferential surface of the fixing rod, so that the outer circumferential surface of the fixing rod is provided with a positioning part for abutting against the inner wall of the heat shrinkable tube.

According to the embodiment of the invention, the cross section of the fixing rod is in a shape of a plus sign.

According to an embodiment of the present invention, the heat shrinkable tube transferring part includes a transferring driving member having a rotating unit and a moving unit, the moving end of the moving unit is connected to the fixing rod to drive the fixing rod to move, and the rotating unit is connected to the moving unit to drive the moving unit to rotate to drive the fixing rod to rotate.

According to an embodiment of the invention, the clamping channel is switchably arranged between an open state and a closed state to receive the heat shrink tube; the inner wall surface of the clamping channel is provided with a step at the second opening in a radially inward protruding mode to construct the limiting unit, and when the fixing rod leaves the clamping channel, the limiting unit blocks the heat shrink tube to enable the heat shrink tube to be separated from the fixing rod and to be limited at the tube penetrating position.

According to the embodiment of the invention, the device also comprises a backflow cavity movably arranged between a first position and a second position, wherein the top of the backflow cavity is open; the clamping channel is movable between a second position and a third position; the hot air flow supply part comprises a heating pipe, one end of the heating pipe is connected with the air source supply part, the other end of the heating pipe faces the second position, and when the clamping channel is located at the second position, the heating pipe supplies hot air flow to the clamping channel through the through hole; when the backflow cavity is located at the second position, the heating pipe supplies hot air flow to the wire harness sleeved with the heat shrink tube, and the hot air flow flows through the backflow cavity and flows back to the outer peripheral surface of the heat shrink tube so that the heat shrink tube is fixedly connected with the wire harness.

In order to achieve the above object, a second aspect of the present invention provides a method for sleeving a heat shrinkable tube, comprising the steps of:

a heat shrinkable tube supplying step of transferring a continuous wound heat shrinkable tube, which is formed by connecting heat shrinkable tubes of the same type in parallel on a band-shaped carrier, to a predetermined cutting position, and cutting and supplying the heat shrinkable tube from the continuous wound heat shrinkable tube at the cutting position by a cutting blade;

a heat shrinkable tube transfer step of transferring the cut heat shrinkable tube to a predetermined tube penetration position by using a fixing rod;

a pipe threading step of inserting a wire harness into the heat shrinkable pipe located at the pipe threading position by using a clamping passage, and a pipe pre-fixing step of pre-fixing the heat shrinkable pipe located at the pipe threading position on the wire harness by using hot air flow;

and a heating and fastening process of supplying hot air flow to the periphery of the heat shrinkable tube pre-fixed on the wire harness to fasten and connect the heat shrinkable tube on the wire harness.

According to the heat shrinkable tube sleeving method provided by the embodiment of the invention, through the matching of the heat shrinkable tube process, the heat shrinkable tube transferring process, the sleeving process and the heating and fastening process, the coating quality of the heat shrinkable tube on the lead terminal can be improved, the tube opening of the heat shrinkable tube is enabled to be flush with the end face of the terminal, and the sleeving precision of the heat shrinkable tube is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a perspective view of a product manufactured by a fully automatic heat shrink tubing machine according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a fully automatic heat shrink tubing machine according to an embodiment of the present invention;

FIG. 3 is a schematic view of another perspective of a fully automatic heat shrink tubing jacketing machine according to an embodiment of the present invention;

FIG. 4 is a schematic view of a heat shrinkable tube supply part according to an embodiment of the present invention;

FIG. 5 is a schematic view of a cutting edge in a heat shrinkable tube supply part according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 4;

FIG. 7 is a schematic view showing a heat shrinkable tube transfer part in cooperation with a cutting blade and a tube passing part according to an embodiment of the present invention;

FIG. 8 is a schematic view of a heat shrinkable tube transfer part according to an embodiment of the present invention;

FIG. 9 is an enlarged partial view of FIG. 8;

FIG. 10 is a schematic view of a perforated section according to an embodiment of the invention;

FIG. 11 is an exploded view of a perforated section according to an embodiment of the present invention;

FIG. 12 is an enlarged partial view of FIG. 11;

FIG. 13 is a structural view of a hot gas flow supply section according to an embodiment of the present invention;

FIG. 14 is an exploded view of a hot gas flow supply according to an embodiment of the invention;

FIG. 15 is a schematic view of a hot gas flow supply and a return chamber in accordance with an embodiment of the invention;

description of reference numerals:

a full-automatic heat-shrinkable tube jacketing machine 1;

a heat shrinkable tube supply part 100, a heat shrinkable tube feeding assembly 101, a calibration tube 1011, a reel table 1012, a tube delivery unit 1013, a transfer wheel 10131, a cutting edge 102, a first blade 1021, a first blade edge 1021a, a first blade surface 1021b, a second blade 1022, a second blade edge 1022a, a second blade surface 1022b, an opening and closing driving part 1023;

a heat shrinkable tube transfer part 200, a fixing rod 201, a groove 2011, a positioning part 2012, a pointed part 2013, a transfer driving part 202, a rotating unit 2021 and a moving unit 2022;

the clamping device comprises a pipe penetrating part 300, a clamping channel 301, a first opening 301a, a second opening 301b, a through hole 301c, a limiting unit 301d, a first clamping jaw 302, a first channel 3021, a second clamping jaw 303, a second channel 3031, a clamping jaw driving part 304, a wire clamping mechanism 305, a third clamping jaw 3051, a fourth clamping jaw 3052, a clamping cylinder 3053 and a moving mechanism 306;

a hot air supply part 400, a heating pipe 401, a reflux cavity 402, a flow regulating mechanism 403, a regulating plate 4031, a regulating hole 40311, a driver 4032, a heat preservation cavity 404 and a fixing part 4041;

a heat shrink tube 2, a tube opening 2 a;

wire harness 3, terminal 31, end face 31a, electric wire 32.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Next, a fully-automatic heat shrinkable tube jacketing machine and a heat shrinkable tube jacketing method using the same according to the present embodiment will be described with reference to the drawings.

The shape of the product is as follows:

first, the shape of a product processed by the full-automatic heat shrinkable tube jacketing machine according to the present embodiment will be described with reference to fig. 1.

As shown in fig. 1, the product includes a heat shrinkable tube 2 and a wire harness 3. The wire harness 3 includes terminals 31 and electric wires 32. The heat shrinkable tube 2 is fitted around the joint between the terminal 31 and the electric wire 32 and tightly wrapped around the joint. In this product, it is required that the end face 31a of the terminal 31 is flush with the mouth 2a of the heat shrinkable tube 2. From this, the incision of the heat shrinkable tube 2 is required to be flat, the sleeving position of the heat shrinkable tube 2 and the wire harness 3 is required to be accurate, and the heat shrinkable tube is required to be uniformly heated during heat shrinkage.

Overview of full-automatic heat-shrinkable tube jacketing machine

Referring to fig. 2 and 3, fig. 2 and 3 are schematic structural views of a full-automatic heat shrinkable tube jacketing machine 1 according to the present embodiment. Wherein the direction of the arrow is the feeding path of the heat shrinkable tube 2.

As shown in fig. 2 to 14, the fully automatic heat shrinkable tube jacketing machine 1 according to the present embodiment generally includes: a heat shrinkable tube supply part 100 which supplies the heat shrinkable tube 2 in a predetermined feeding direction; a heat shrinkable tube transfer part 200 which moves the heat shrinkable tube 2 supplied from the heat shrinkable tube supply part 100 to a tube passing position; a penetration part 300 that inserts the wire harness 3 into the heat shrinkable tube 2 at the penetration position; and a hot air flow supply part 400 for supplying hot air flow to the pipe penetration part 300 to make the heat shrinkable pipe 2 fixedly connected to the wire harness 3 through heat shrinkage.

In one aspect of the invention, a fully automatic heat shrink tubing machine 1 is provided. Referring to fig. 2 and 3, the full-automatic heat shrinkable tube jacketing machine 1 according to an embodiment of the present invention includes: a heat shrinkable tube supply part 100, a heat shrinkable tube transfer part 200, a tube penetration part 300, and a hot air flow supply part 400.

Wherein the heat shrinkable tube supplying part 100 is adapted to supply the heat shrinkable tube 2; the heat shrinkable tube transfer part 200 has a fixing lever 201, the fixing lever 201 being adapted to fix the heat shrinkable tube 2 and transfer the heat shrinkable tube 2 supplied from the heat shrinkable tube supply part 100 to a predetermined tube passing position; the penetrating pipe part 300 is provided with a clamping channel 301, a first opening 301a of the clamping channel 301 is used for inserting a wire harness, a second opening 301b is used for pulling out the fixing rod 201, and the clamping channel 301 is provided with a through hole 301c communicated with the outside, wherein the second opening 301b is provided with a limiting unit 301d for limiting the heat shrinkable pipe 2 at a pipe penetrating position when the fixing rod 201 leaves the clamping channel 301, a feeding wire harness is inserted into the heat shrinkable pipe 2 at the pipe penetrating position until a terminal 31 on the wire harness 3 penetrates out of the second opening 301b, and hot air is supplied into the clamping channel 301 through the through hole 301c so as to fixedly connect the wire harness 3 and the heat shrinkable pipe 2; the hot air flow supply part 400 is adapted to supply hot air flow to the clamping channel 301.

In other words, the tube penetrating position is in the clamping channel 301, wherein the limiting unit 301d cooperates with the fixing rod 201 to limit the heat shrinkable tube 2 at the tube penetrating position, the limiting unit 301d and the second opening 301b are arranged such that when the wire harness 3 is inserted into the heat shrinkable tube 2, the terminal 31 passes through the second opening 301b, and the limiting unit 301d limits the tube opening 2a of the heat shrinkable tube 2 and the end surface 31a of the terminal 31, so as to achieve that the tube opening 2a of the heat shrinkable tube 3 is flush with the end surface 31a of the terminal 31 during tube penetrating. Then, the wire harness 3 and the heat shrinkable tube 2 are kept still, hot air flow is provided to the clamping channel 301, the hot air flow enables the heat shrinkable tube 2 to shrink and cover the wire harness 3, the clamping channel 301 positions the heat shrinkable tube 2 and the wire harness 3 at the tube penetrating position, and then the hot air flow is combined for heat shrinkage, so that the position accuracy of the sleeve can be guaranteed.

Therefore, according to the full-automatic heat shrinkable tube jacketing machine 1 of the present invention, the fixing rod 201 fixes the heat shrinkable tube 2 and transfers the heat shrinkable tube 2 to a predetermined tube passing position, so that when the fixing rod 201 transfers the heat shrinkable tube 2 to the tube passing position, the fixing rod 201 is engaged with the limit unit 301d of the tube passing portion 300, and the heat shrinkable tube 2 can be accurately located at the tube passing position; and the end face 31a of the terminal 31 can be flush with the mouth 2a of the heat shrinkable tube 2 when the wire harness 3 is inserted into the heat shrinkable tube 2 by the stopper unit 301d of the through tube part 300; flush back pyrocondensation pipe 2 and pencil 3 and keep motionless, through supplying with the hot gas flow to centre gripping passageway 301, fix pyrocondensation pipe 2 on pencil 3 to guarantee that 2 sleeve pipe positions of pyrocondensation pipe are accurate, improve the cladding quality of pyrocondensation pipe 2 to the wire terminal, guarantee that the mouth of pipe of pyrocondensation pipe 2 flushes with the terminal surface of terminal 31, improve pyrocondensation pipe 2's sleeve pipe precision.

Referring to fig. 4 to 6, the heat shrinkable tube supply part 100:

in some embodiments of the present invention, the heat shrinkable tube supply part 100 has a heat shrinkable tube feeding member 101 and a cutting blade 102, the heat shrinkable tube feeding member 101 conveys a wound heat shrinkable tube in which the same type of heat shrinkable tubes are juxtaposed and connected on a band-shaped carrier to a predetermined cutting position, the cutting blade 102 is used to cut and supply the heat shrinkable tube from the wound heat shrinkable tube located at the cutting position, and the cutting blade 102 has a scissor structure. From this, can avoid cutting off the in-process pyrocondensation pipe 2 and remove along with the cutter through the cutting edge 102 that is the scissors structure, can guarantee that the 2 incisions of pyrocondensation pipe are level and smooth when cutting pyrocondensation pipe 2, can not cut askewly, guarantee the quality of pyrocondensation pipe.

Wherein the cutting edge 102 comprises a first blade 1021 and a second blade 1022, the blade edge of the first blade 1021 and the blade edge of the second blade 1022 are oppositely facing and staggered to collectively define a shear aperture; the first blade 1021 and the second blade 1022 are connected with the opening and closing driving member 1023 to enable the cutting opening to cut the heat shrinkable tube 2 by the opening and closing driving member 1023 to drive the first blade 1021 and the second blade 1022 to move in an opening and closing manner. It will be appreciated that the first blade 1021 and the second blade 1022, which are arranged in a scissors configuration, have both ends converging and the other two ends diverging so that the top views of the two blades are in a chevron shape. Then, the first blade edge 1021a of the first blade 1021 and the second blade edge 1022a of the second blade 1022 face each other and are arranged to be staggered to define a shear opening together, so that when the opening and closing driving member 1023 drives the opening and closing movement of the first blade 1021 and the second blade 1022, the first blade 1021 and the second blade 1022 can be in shear fit to cut the heat shrinkable tube.

Optionally, the first blade 1021 has a first blade face 1021b that is angled upward from the edge, the second blade 1022 has a second blade face 1022b that is angled downward from the edge, and the first blade face 1021b and the second blade face 1022b are angled at the same angle. Thus, the first blade 1021 and the second blade 1022 can be guided to cut into the heat shrinkable tube 2 by the inclined blade surface, and the flatness of the cut of the heat shrinkable tube can be further ensured.

Further, the first blade face 1021b and the second blade face 1022b are each inclined at an angle of 30 °. Therefore, the cut of the heat shrinkable tube can be ensured to be flat after being cut.

Optionally, the opening and closing driving member 1023 is a clamping jaw cylinder, and two clamping jaws of the clamping jaw cylinder are connected with the first blade 1021 and the second blade 1022 in a one-to-one correspondence manner. The blade backs of the first blade 1021 and the second blade 1022 are respectively fixed on the two blade seats, and the two blade seats are correspondingly connected with the two clamping jaws one by one, so that the clamping jaw cylinder can drive the first blade 1021 and the second blade 1022 to move in an opening and closing manner to shear the heat shrinkable tube.

In some embodiments of the invention, the heat shrink tube feeding assembly 101 includes a calibration tube 1011 having an inner diameter equal to the outer diameter of the heat shrink tube, the calibration tube 1011 being vertically disposed and perpendicular to the cut. That is to say, the calibration tube 1011 is disposed above the cut, and the calibration tube 1011 can calibrate the flat or curved heat shrinkable tube through the inner tube, so as to further ensure that the heat shrinkable tube 2 is not cut askew and the cut of the heat shrinkable tube 2 is smooth. And, by the arrangement of the aligning pipe 1011, the heat shrinkable tube 2 can be vertically cut by the blade.

Optionally, the inlet of the calibration tube 1011 is a flare pilot. Therefore, the heat shrinkable tube 2 can be guided to enter the circle calibration tube 1011, and the circle calibration efficiency is improved.

Optionally, the heat shrink tubing feeding assembly 101 further comprises a reel table 1012 and a tubing delivery unit 1013. The platen 1012 rotatably holds a heat shrinkable tube in a roll shape. The tube delivery unit 1013 is adapted to deliver the coiled continuous heat shrinkable tube to the cutting opening for cutting. The tube delivery unit 1013 includes a plurality of delivery wheel sets adapted to clamp and deliver the heat shrinkable tube to the calibration tube 1011, and each delivery wheel set includes two delivery wheels 10131 disposed oppositely and turned oppositely. Thus, the heat shrinkable tube can be automatically transferred by the two transfer wheels 10131 clamping the heat shrinkable tube while rotating. And, the heat shrinkable tube can be vertically transferred by arranging the position of the transfer roller set. The rotation of the two transmission wheels 10131 can be transmitted and driven by a motor, a gear and a synchronous belt, and the clamping action of the two transmission wheels 10131 can drive one transmission wheel 10131 to move to be close to the other transmission wheel by an air cylinder.

Optionally, a calibration tube 1011 may be provided inside the tube delivery unit 1013 to calibrate the heat shrink tube.

Referring to fig. 7 to 8, the heat shrinkable tube transfer portion 200:

in some embodiments of the present invention, the fixing rod 201 is provided with a plurality of grooves 2011 recessed along a radial direction of the fixing rod 201, and the plurality of grooves 2011 are circumferentially distributed on an outer circumferential surface of the fixing rod 201, so that the outer circumferential surface of the fixing rod 201 forms a positioning portion 2012 for abutting against an inner wall of the heat shrinkable tube 2. That is, the fixing rod 201 is provided with the groove 2011, so that the outer circumferential surface of the fixing rod 201 is uneven along the circumferential direction and has concave-convex fall; the positioning part 2012 has the curvature of the fixing rod 201 itself. Thus, when the fixing rod 201 is inserted into the heat shrinkable tube 2, the position of the outer peripheral surface of the fixing rod 201 except the groove 2011 abuts against the inner wall of the heat shrinkable tube 2, and the heat shrinkable tube 2 can be prevented from moving or rotating on the fixing rod 201, so that the position of the heat shrinkable tube 2 on the fixing rod 201 can be ensured to be stable, and further the position of the heat shrinkable tube 2 cut off is ensured to be stable; meanwhile, when the heat shrinkable tube 2 is in the tube penetrating position, the positioning portion 2012 has a curved surface, so that the position limiting unit 301d can smoothly separate the heat shrinkable tube 2 from the fixing rod 201. Therefore, the fixing rod 201 can be inserted into the heat shrinkable tube 2 to fix the heat shrinkable tube 2, and the positioning part 2012 on the fixing rod 201 positions the heat shrinkable tube 2, so that the position of the heat shrinkable tube 2 on the fixing rod 201 is stable, and thus, when the fixing rod 201 is inserted into the heat shrinkable tube 2, the cutting blade 102 can accurately cut off the heat shrinkable tube 2, and the heat shrinkable tube 2 is ensured not to be cut askew; when the fixing rod 201 transfers the heat shrinkable tube 2 to the tube penetrating position, the fixing rod 201 is matched with the limiting unit 301d, so that the heat shrinkable tube 2 can be accurately positioned at the tube penetrating position, and the sleeve position of the heat shrinkable tube 2 is accurate.

Alternatively, the number of the grooves 2011 is four, and the four grooves 2011 are uniformly circumferentially spaced on the outer circumferential surface of the fixing rod 201. Thereby, the fixing rod 201 can stably position the heat shrinkable tube 2.

Further, the cross section of the fixing rod 201 is shaped like a "+". That is, the grooves 2011 are V-shaped. The cross section of the fixing rod 201 is arranged to be in a shape like a plus sign, so that the positioning of the positioning part 2012 on the heat shrinkable tube 2 can be met, and meanwhile, the fixing rod is matched with the limiting unit 301 d.

In addition, referring to fig. 8, one end of the fixing rod 201 has a tip part 2013 for guiding the insertion of the fixing rod 201 into the heat shrinkable tube 2. The pointed portion 2013 allows the fixing rod 201 to be quickly inserted into the heat shrinkable tube 2, improving the efficiency of transferring the heat shrinkable tube 2.

Referring to fig. 6 and 7, the heat shrinkable tube transferring portion 200 further includes a transferring driving member 202, the transferring driving member 202 includes a rotating unit 2021 and a moving unit 2022, the moving end of the moving unit 2022 is connected to the fixing rod 201 to drive the fixing rod 201 to move, and the rotating unit 2021 is connected to the moving unit 2022 to drive the moving unit 2022 to rotate to drive the fixing rod 201 to rotate. That is, the cutouts and the tube passing positions are vertically arranged, whereby the heat shrinkable tube 2 can be transferred from the cutouts to the tube passing positions by the cooperation of the rotating unit 2021 and the moving unit 2022. Therefore, the position of the cut-off and tube-passing part 300 can be properly stepped by the cooperation of the fixing lever 201 and the transfer driving member 202 of the heat shrinkable tube transfer part 200.

Alternatively, the rotating unit 2021 is a tilt cylinder, the moving unit 2022 is an air cylinder, a cylinder body of the air cylinder is fixed on a power output shaft of the tilt cylinder, and a piston rod of the air cylinder is connected with the fixing rod 201. Through the cooperation of the high-precision tilt cylinder and the air cylinder, the position stability of the heat shrinkable tube 2 on the fixing rod 201 can be further ensured.

The penetrating part 300 refers to fig. 10 to 12:

in some embodiments of the invention, the clamping channel 301 is switchably configurable between an open state and a closed state to receive the heat shrink tubing 2; the inner wall surface of the holding channel 301 is provided with a step at the second opening 301b radially inwardly to configure a stopper unit 301d, and when the fixing rod 201 leaves the holding channel 301, the stopper unit 301d blocks the heat shrinkable tube 2 so that the heat shrinkable tube 2 is detached from the fixing rod 201 and is stopped at the tube passing position. When the wire harness 3 is inserted into the heat shrinkable tube 2, the positioning of the limiting unit 301d and the second opening 301b causes the terminal 31 to pass through the second opening 301b, and the limiting unit 301d limits the tube orifice 2a of the heat shrinkable tube 2 and the end face 31a of the terminal 31, so that the tube orifice 2a of the heat shrinkable tube 3 and the end face 31a of the terminal 31 are flush.

Alternatively, the clamping channel 301 is constructed from two jaws of a tube clamping mechanism. Specifically, the tube clamping mechanism includes a first clamping jaw 302, a second clamping jaw 303, and a clamping jaw driving member 304, wherein the clamping jaw driving member 304 may be a clamping jaw cylinder to facilitate clamping. A first passage 3021 is formed in the first jaw 302, and the first passage 3021 protrudes radially to form a first step; a second channel 3031 corresponding to the first channel 3021 is formed in the second clamping jaw 303, and the second channel 3031 radially protrudes to form a second step corresponding to the first step; the first channel 3021 and the second channel 3031 approach each other to form the clamping channel 301, and the first step and the second step approach each other to form the limiting unit 301 d; the jaw driver 304 drives the first jaw 302 and the second jaw 303 toward or away from each other. Therefore, the clamping channel 301 is switched between the open state and the closed state by opening and closing the first clamping jaw 302 and the second clamping jaw 303 through the clamping jaw driving member 304, so as to open and receive the heat shrinkable tube 2, and the heat shrinkable tube 2 is separated from the fixing rod 201 by closing the matching limiting unit 301 d.

Optionally, the tube penetrating part 300 further comprises a wire clamping mechanism 305, and the wire clamping mechanism 305 is used for clamping the wire harness 3. Specifically, the wire clamping mechanism 305 includes a third clamping jaw 3051, a fourth clamping jaw 3052 and a clamping cylinder 3053, the third clamping jaw 3051 and the fourth clamping jaw 3052 are respectively disposed at the movable end of the clamping cylinder 3053, the third clamping jaw 3051 and the fourth clamping jaw 3052 are close to each other to clamp the wire harness 3, and the clamping cylinder 3053 drives the third clamping jaw 3051 and the fourth clamping jaw 3052 to be close to each other or away from each other. Wherein, set up the claw tooth that prevents the pencil and drop respectively on third clamping jaw 3051 and the fourth clamping jaw 3052. When the pencil 3 needs to be clamped, the clamping cylinder 3053 drives the third clamping jaw 3051 and the fourth clamping jaw 3052 to be close to each other to clamp the pencil 3, and the claw teeth effectively prevent the pencil 3 from falling off.

Optionally, the first opening 301a of the clamping channel 301 is further provided with a guiding opening for facilitating insertion of the wire harness 3, and when the wire harness 3 is inserted into the clamping channel 301, the terminal may not face the clamping channel 301, and at this time, the terminal may be inserted into the clamping channel 301 along the side wall of the guiding opening.

Alternatively, the through hole 301d on the clamping channel 301 is radially disposed at the top of the clamping channel 301.

In addition, the tube penetrating part 300 further comprises a moving mechanism 306, and the moving mechanism 306 can drive the clamping channel 301 to move between the second position and the third position. Specifically, the moving mechanism 306 may include an adjustable stroke cylinder, a slide rail, and a slider, where the adjustable stroke cylinder drives the slider to move on the slide rail, and the slider drives the clamping channel 301 to move between the second position and the third position. When in the second position, the through hole 301d of the clamping channel 301 may correspond to the hot air supply part 400, so that the hot air supply part 400 supplies hot air into the clamping channel 301; in the third position, the clamping channel 301 is clear of the hot gas flow supply 400.

Hot air flow supply section 400 referring to fig. 13 to 15:

in some embodiments of the present invention, the hot air flow supply portion 400 includes a heating pipe 401, one end of the heating pipe 401 is connected to the air supply portion, and the other end faces the second position, and when the clamping passage 301 is located at the second position, the heating pipe 401 supplies the hot air flow to the clamping passage 301 through the through hole 301d, so that the heat shrinkable tube 2 is heat shrunk and fixed on the wire harness 3. Wherein, through the cooperation of heating pipe 401 with through-hole 301d and centre gripping passageway 301, can directly utilize the hot-blast stream to make pyrocondensation pipe 2 and pencil 3 fastening connection.

Certainly, in order to ensure that the outer peripheral surface of the heat shrinkable tube 2 is heated uniformly, the coating quality is better. The hot gas flow supply 400 may also be provided with a recirculation chamber 402, the recirculation chamber 402 being movable between a first position and a second position. The aforementioned fitting of the heating tube 401 with the through hole 301d and the holding passage 301 may be such that the heat shrinkable tube 2 is pre-positioned on the wire harness 3. Then, the clamping channel 301 is moved to a third position, and the return cavity 402 is moved to a second position, so that the heating pipe 401 supplies hot air flow towards the heat shrinkable tube 2 on the wire harness 3, and the hot air flow flows back to the outer circumferential surface of the heat shrinkable tube 2 through the return cavity 402, so that the heat shrinkable tube 2 is uniformly heat-shrunk and tightly wrapped on the wire harness 3. Thereby, the accuracy of the sleeve between the heat shrinkable tube 2 and the wire harness 3 can be further ensured.

Optionally, the reflow chamber 402 is an open-top recess. The inner wall surface of the groove can lead the hot air flow to flow back upwards.

Further, the flutes of the flashback chamber 402 are tapered. Thus, the backflow effect of the hot air flow can be improved.

Optionally, an airflow channel is provided in the heating pipe 401 for airflow to pass through. The hot air flow supply part 400 further comprises a flow adjusting mechanism 403, the flow adjusting mechanism 403 comprises an adjusting plate 4031 and a driver 4032, a movable end of the driver 4032 is connected with the adjusting plate 4031 and drives the adjusting plate 4031 to move, and the adjusting plate 4031 is movably arranged on the air outlet of the heating tube 301 to cover the air outlet completely or partially.

When heating, firstly, the driver 4032 drives the adjusting plate 4031 to completely cover the air outlet so as to seal the air flow channel on the heating pipe 401, then the heating pipe 401 starts to heat, because the air in the air flow channel is less, the air can be rapidly heated, after the air is heated, the driver 4032 drives the adjusting plate 4031 to partially cover or not cover the air outlet so as to control the outflow of hot air, the heat shrinkable pipe 2 is conveniently heated, therefore, the hot air flow supply part 400 can rapidly heat the air, the outflow of the hot air is conveniently controlled, and the production efficiency is improved.

Optionally, the heating pipe heating device further comprises a heat preservation cavity 404, and the heating pipe 401 is installed in the heat preservation cavity 404, so that heat emitted by the heating pipe 401 is not easily taken away by outside air, and the heating effect of the heating pipe 401 is improved.

Alternatively, the driver 4032 is disposed at one side of the thermal insulation chamber 404, and a movable end of the driver 4032 extends into the thermal insulation chamber 404 to connect with the adjusting plate 4031, wherein the driver 4032 may be an air cylinder, and the movable end of the air cylinder extends into the thermal insulation chamber 404 to connect with the adjusting plate 4031, so as to drive the adjusting plate 4031 to move.

Optionally, the adjusting plate 4031 is provided with an adjusting hole 40311, the adjusting hole 40311 corresponds to the air outlet, the adjusting plate 4031 is moved to adjust the overlapping amount of the adjusting hole 40311 and the air outlet, the larger the overlapping amount of the adjusting hole 40311 and the air outlet is, the larger the hot air outflow is, the smaller the overlapping amount of the adjusting hole 40311 and the air outlet is, and the smaller the hot air outflow is, so that the output amount of the air flow is conveniently adjusted, and the production efficiency is improved.

Optionally, a fixing part 4041 is disposed in the heat preservation cavity 404, and the heating pipe 401 passes through the fixing part 4041 and is fixed in the heat preservation cavity 404, where the fixing part 4041 may include a first fixing part and a second fixing part, the first fixing part is recessed radially inwards to form a groove, and the second fixing part is disposed in the groove to fix the heating pipe 401. The first fixing piece and the second fixing piece are matched to effectively fix the heating pipe 401, so that the heating pipe 401 is prevented from shaking.

In addition, the method for sleeving the heat shrinkable tube by using the full-automatic heat shrinkable tube sleeving machine 1 comprises the following steps:

a heat shrinkable tube supplying step of transferring a continuous wound heat shrinkable tube, which is formed by connecting heat shrinkable tubes of the same type in parallel on a band-shaped carrier, to a predetermined cutting position, and cutting and supplying the heat shrinkable tube from the continuous wound heat shrinkable tube at the cutting position by a cutting blade; in this process, the heat shrinkable tube is conveyed from the reel table 1012 to the cutting opening of the cutting blade 102 through the tube sending unit 1013.

A heat shrinkable tube transfer step of transferring the cut heat shrinkable tube to a predetermined tube passing position by using the fixing lever 201; in this process, the fixing rod 201 is first inserted into the heat shrinkable tube 2 at the cut, the cutting blade 102 cuts the continuous heat shrinkable tube at the cut position, and then the transfer driving member 202 drives the fixing rod 201 to transfer the heat shrinkable tube to the holding channel 301.

A tube inserting step of inserting the wire harness 3 into the heat shrinkable tube 2 at the tube inserting position by using the clamping passage 301, and a tube pre-fixing step of pre-fixing the heat shrinkable tube 2 at the tube inserting position on the wire harness 3 by using a hot air flow; in this process, after the clamping channel 301 is opened to receive the fixing rod 201 with the heat shrinkable tube 2 fixed thereon, and then closed, the fixing rod 201 is driven by the transfer driving member 202 to be pulled out from the second opening 301b of the clamping channel 301, and the limiting unit 301d prevents the heat shrinkable tube 2 from being taken out, so that the heat shrinkable tube 2 is limited at the tube penetrating position. Then, the hot air flow supplying part 400 supplies the hot air flow to the holding passage 301 through the through hole 301c, so that the heat shrinkable tube 2 is pre-fastened on the bundle 3.

And a heating and fastening process of supplying hot air flow to the periphery of the heat shrinkable tube pre-fixed on the wire harness to fasten and connect the heat shrinkable tube on the wire harness. In this process, the reflow chamber 402 is located at a second position to cooperate with the heating pipe 401 to provide a uniform flow of hot gas to the outer circumferential surface of the heat shrinkable tube 2.

Therefore, according to the heat shrinkable tube sleeving method provided by the embodiment of the invention, through the matching of the heat shrinkable tube process, the heat shrinkable tube transferring process, the sleeving process and the heating and fastening process, the coating quality of the heat shrinkable tube on the wire terminal can be improved, the tube opening of the heat shrinkable tube is enabled to be flush with the end face of the terminal, and the sleeving precision of the heat shrinkable tube is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. The utility model provides a full-automatic pyrocondensation pipe jacketing machine which characterized in that includes: a heat shrinkable tube supply part, a heat shrinkable tube transfer part, a tube penetration part and a hot air flow supply part;

the heat shrinkable tube supply part is suitable for supplying a heat shrinkable tube;

the heat shrinkable tube transferring part is provided with a fixing rod, and the fixing rod is suitable for fixing the heat shrinkable tube and transferring the heat shrinkable tube supplied by the heat shrinkable tube supplying part to a preset tube penetrating position;

the penetrating pipe part is provided with a clamping channel, a first opening of the clamping channel is used for inserting a wire harness, a second opening of the clamping channel is used for pulling out the fixed rod, and a through hole communicated with the outside is arranged on the clamping channel;

the hot air flow supply part is suitable for supplying hot air flow to the clamping channel.

2. The fully automatic heat shrinkable tube jacketing machine according to claim 1, wherein the heat shrinkable tube supply section has a heat shrinkable tube feeding unit that conveys a wound heat shrinkable tube, in which the same type of heat shrinkable tube is juxtaposed and connected on a strip-shaped carrier, to a predetermined cutting position, and a cutting blade for cutting and supplying the heat shrinkable tube from the wound heat shrinkable tube at the cutting position, the cutting blade having a scissor structure.

3. The fully automatic heat shrink tube jacketing machine of claim 2 wherein said cutting edge comprises a first blade and a second blade, said first blade having a cutting edge facing and offset from said second blade to collectively define a shear notch; the first blade and the second blade are connected with an opening and closing driving piece so as to drive the first blade and the second blade to move in an opening and closing mode through the opening and closing driving piece, and the heat shrinkable tube is cut by the shearing opening.

4. The fully automatic heat shrink tube jacketing machine of claim 3, wherein the heat shrink tube supply section comprises a calibration tube having an inner diameter equal to the outer diameter of the heat shrink tube, the calibration tube being vertically disposed and perpendicular to the shear port.

5. The fully automatic heat shrinkable tube jacketing machine of claim 1, wherein the fixing rod is provided with a plurality of grooves recessed in a radial direction of the fixing rod, and the plurality of grooves are circumferentially distributed on an outer circumferential surface of the fixing rod, so that a positioning portion for abutting against an inner wall of the heat shrinkable tube is configured on the outer circumferential surface of the fixing rod.

6. The fully automatic heat shrinkable tube jacketing machine of claim 1 or 5 wherein the cross-section of the fixing bar is "+" shaped.

7. The fully automatic heat shrinkable tube jacketing machine according to claim 1 or 5, wherein the heat shrinkable tube transfer section includes a transfer driving member having a rotating unit and a moving unit, a moving end of the moving unit being connected to the fixed rod to drive the fixed rod to move, the rotating unit being connected to the moving unit to drive the moving unit to rotate to drive the fixed rod to rotate.

8. The fully automatic heat shrink tubing jacketing machine of claim 1 wherein the clamping channel is switchable between an open state and a closed state to receive the heat shrink tubing; the inner wall surface of the clamping channel is provided with a step at the second opening in a radially inward protruding mode to construct the limiting unit, and when the fixing rod leaves the clamping channel, the limiting unit blocks the heat shrink tube to enable the heat shrink tube to be separated from the fixing rod and to be limited at the tube penetrating position.

9. The fully automatic heat shrink tubing jacketing machine of claim 1 further comprising a reflow chamber movably disposed between a first position and a second position, said reflow chamber being open at a top; the clamping channel is movable between a second position and a third position; the hot air flow supply part comprises a heating pipe, one end of the heating pipe is connected with the air source supply part, the other end of the heating pipe faces the second position, and when the clamping channel is located at the second position, the heating pipe supplies hot air flow to the clamping channel through the through hole; when the backflow cavity is located at the second position, the heating pipe supplies hot air flow to the wire harness sleeved with the heat shrink tube, and the hot air flow flows through the backflow cavity and flows back to the outer peripheral surface of the heat shrink tube so that the heat shrink tube is fixedly connected with the wire harness.

10. A method of sleeving a heat shrinkable tube, comprising the steps of:

a heat shrinkable tube supplying step of transferring a continuous wound heat shrinkable tube, which is formed by connecting heat shrinkable tubes of the same type in parallel on a band-shaped carrier, to a predetermined cutting position, and cutting and supplying the heat shrinkable tube from the continuous wound heat shrinkable tube at the cutting position by a cutting blade;

a heat shrinkable tube transfer step of transferring the cut heat shrinkable tube to a predetermined tube penetration position by using a fixing rod;

a pipe threading step of inserting a wire harness into the heat shrinkable pipe located at the pipe threading position by using a clamping passage, and a pipe pre-fixing step of pre-fixing the heat shrinkable pipe located at the pipe threading position on the wire harness by using hot air flow;

and a heating and fastening process of supplying hot air flow to the periphery of the heat shrinkable tube pre-fixed on the wire harness to fasten and connect the heat shrinkable tube on the wire harness.

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