Automatic tube cutting and threading machine and tube threading method

Abstract

The present invention discloses an automatic tube cutting and tube threading integrated machine and a tube threading method, wherein the automatic tube cutting and tube threading integrated machine comprises a machine platform and a tube feeding mechanism, a tube peeling mechanism, and a tube threading mechanism sequentially arranged on the machine platform; the tube peeling mechanism and the tube threading mechanism are jointly provided with a tube channel for the corrugated tube to be threaded; the tube threading mechanism comprises an operating table, a wire harness positioning assembly, and a tube pulling assembly, and the operating table is provided with a receiving surface for placing the wire harness; the wire harness positioning assembly is located between the tube peeling mechanism and the operating table, and comprises a magnetic suspension part built into the tube channel, and the magnetic suspension part is used to position one end of the wire harness; the tube pulling assembly is used to pull the corrugated tube onto the wire harness located on the receiving surface. The present invention realizes the integrated operation of peeling and threading of the corrugated tube, improves the processing efficiency, and reduces the difficulty of threading, making threading more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated pipe processing equipment, and in particular to an automatic pipe cutting and threading integrated machine and a pipe threading method. Background Art

[0002] In new energy products, the wiring harness is an indispensable and important component, which is used to achieve power connectivity between devices such as relay lines and control systems. In order to ensure the normal use of the wiring harness under harsh conditions such as high temperature, a corrugated tube is generally applied to the wiring harness during processing to protect the wiring harness. When threading the tube, the existing practice is: first cut the corrugated tube to a specified length, fix the corrugated tube, and then drive the wire harness from one end of the corrugated tube to the other end of the corrugated tube through a guide rod. However, this method is not only inefficient and labor-intensive, but also when the length of the corrugated tube is long, it is difficult for the guide rod to drive the wire harness through the corrugated tube, and threading is extremely inconvenient. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide an automatic tube cutting and threading machine and a tube threading method, which realizes the integrated operation of corrugated tube rotary cutting and threading, improves processing efficiency, reduces the difficulty of threading, and makes threading more convenient.

[0004] In order to achieve the above purpose, one of the technical solutions adopted by the present invention is: an automatic tube cutting and threading machine, comprising a machine platform and a tube feeding mechanism, a tube peeling mechanism, and a tube threading mechanism arranged on the machine platform in sequence; the tube peeling mechanism and the tube threading mechanism are both provided with a tube channel for the corrugated tube to be threaded;

[0005] The tube threading mechanism includes an operating table, a wire harness positioning assembly, and a tube pulling assembly. The operating table is provided with a receiving surface for placing the wire harness; the wire harness positioning assembly is located between the tube peeling mechanism and the operating table, and includes a magnetic suspension portion built into the tube channel, and the magnetic suspension portion is used to position one end of the wire harness; the tube pulling assembly is used to pull the corrugated tube in the tube channel onto the wire harness located on the receiving surface.

[0006] When in use, the wire harness is loaded onto the receiving surface, and one end of the wire harness is fixed on the magnetic suspension part, and the other end is naturally hung on the receiving surface; the corrugated tube on the tube feeding mechanism passes through the tube peeling mechanism and the tube threading mechanism in sequence along the tube channel, and when one end of the corrugated tube moves to the magnetic suspension part, the corrugated tube can be smoothly put onto one end of the wire harness located on the magnetic suspension part. At this time, since the wire harness is limited by the magnetic suspension part, the end of the wire harness connected to the magnetic suspension part remains stationary, while the corrugated tube continues to move. Until one end of the bellows extends out of the tube body channel; the tube pulling assembly then pulls the end of the corrugated tube extending out of the tube body channel toward the receiving surface, so that the bellows continues to be put on the wire harness located on the receiving surface; when the length of the bellows reaches the specified length, the tube body rotary cutting mechanism immediately cuts off the bellows, so that the bellows located on the tube body threading mechanism is disconnected from the bellows transported from the tube body feeding mechanism to the tube body rotary cutting mechanism. At this time, the bellows on the tube body threading mechanism can be moved until it is completely put on the wire harness under the continuous pulling of the tube pulling assembly.

[0007] The beneficial effects of the automatic tube cutting and threading integrated machine of the present invention are:

[0008] 1. The corrugated tube is transported to the tube peeling mechanism through the tube feeding mechanism, and is further transported to the tube threading mechanism through the tube channel to realize the feeding action of the corrugated tube; in the tube threading mechanism, one end of the wire harness is positioned by the magnetic suspension part, so that the wire harness presents a suspended state at one end, so that the corrugated tube can be directly put on the suspended end of the wire harness during the transportation process; and then the corrugated tube is driven by the tube pulling component to continue to be put on the wire harness located on the receiving surface; and in the process of the tube pulling component pulling the corrugated tube, the tube peeling mechanism can cut and shear the corrugated tube, so that the cut corrugated tube can be completely put on the wire harness under the pulling of the tube pulling component, and the corrugated tube threading operation is completed;

[0009] 2. In the tube threading mechanism, the wire harness is suspended by the magnetic suspension part, and the limited movement of the bellows is achieved through the cooperation of the tube channel and the tube pulling assembly, so that the threading operation is achieved by adopting the method of keeping the wire harness stationary and the bellows moving set, so that the threading operation is not limited by the length specification of the bellows, reducing the difficulty of threading;

[0010] 3. The integration of the tube feeding mechanism, the tube peeling mechanism and the tube threading mechanism realizes the integrated operation of feeding, cutting and threading of the corrugated tube, which greatly improves the processing efficiency of the corrugated tube threading.

[0011] It should be noted that since one end of the wiring harness is suspended and the other end hangs naturally, when the corrugated tube extends out of the tube body channel, the end of the corrugated tube will contact the wiring harness. Subsequently, when the tube pulling assembly pulls the corrugated tube onto the wiring harness, the end of the corrugated tube always rests on the wiring harness.

[0012] Further, the magnetic suspension part includes a magnetic ring and a magnetic rod with the same polarity; the magnetic ring is coaxially arranged in the tube channel, and the axis of the magnetic ring is located above the receiving surface; the magnetic rod is coaxially passed through the magnetic ring, and the side close to the operating table is used for wiring harness connection; the inner diameter of the magnetic ring is larger than the outer diameter of the bellows, and the outer diameter of the magnetic rod is smaller than the inner diameter of the bellows.

[0013] Since the magnetic ring and the magnetic bar have the same polarity, the magnetic bar can be suspended on the axis of the magnetic ring, and thus one end of the wire harness connected to the magnetic bar can be suspended on the axis of the magnetic ring; and since the axis of the magnetic ring is located above the receiving surface, at this time, the wire harness can be in a state where one end connected to the magnetic bar is suspended in the air and the other end naturally falls on the receiving surface. By limiting the radial dimensions of the bellows, the magnetic ring, and the magnetic bar, the bellows can be moved between the magnetic ring and the magnetic bar, and during the movement, the bellows will not contact the magnetic ring or the magnetic bar, and thus will not interfere with the magnetic force between the magnetic ring and the magnetic bar.

[0014] Specifically, the tube peeling mechanism includes a peeling base and a peeling assembly. The peeling base is provided with a limit tube seat for the corrugated tube to pass through. The peeling assembly is installed on the peeling base, and includes a rotating body sleeved on the limit tube seat. A cutting assembly for cutting the corrugated tube is provided on one side of the rotating body close to the tube threading mechanism. The corrugated tube is limited by the limit tube seat to avoid shaking during the cutting process of the corrugated tube. The peeling operation of the corrugated tube is realized by the cooperation between the rotating body and the cutting assembly.

[0015] Specifically, the cutter assembly includes a cutter substrate, a cutter drive unit, and a plurality of cutters; the cutter substrate is connected to a rotating body, and a limit tube seat is provided through the middle thereof; the plurality of cutters are evenly distributed on the cutter substrate around the limit tube seat, and can move radially along the cutter substrate toward or away from the limit tube seat; the cutter drive unit includes a drive plate provided one-to-one with the cutters, the drive plate can move back and forth along the length direction of the tube channel, and a wedge-shaped surface for the cutters to abut is provided on the side close to the cutters. Arranging the drive plate to move along the length direction of the tube channel can effectively save radial space, and the wedge-shaped surface can be provided to convert the movement of the drive plate along the length direction of the tube channel into the radial movement of the cutter along the tube channel.

[0016] Furthermore, the cutter includes a movable plate, one end of which is provided with a roller that can abut against the wedge surface, and the other end is provided with a blade; an elastic member is connected between the movable plate and the cutter base plate. The setting of the roller can effectively reduce the friction resistance between the wedge surface and the cutter, and the setting of the elastic member can flexibly apply force to the movable plate, thereby enabling the movable plate to flexibly cut the corrugated tube.

[0017] Furthermore, the cutter drive unit also includes a drive ring plate that can move along the length direction of the limit tube seat under the action of the drive member. The drive ring plate is mounted on the rotating body and is connected to the cutter base plate through a guide rod; and all drive plates are mounted on the drive ring plate. The setting of the drive ring plate can ensure the synchronous displacement of all drive plates, thereby making the radial displacement of all cutters consistent, ensuring the uniformity of cutting the corrugated tube.

[0018] Specifically, the driving member includes driving cylinders symmetrically arranged on both sides of the rotating body, and the piston rod of the driving cylinder is provided with a contact member for pushing the driving ring plate to move; the contact member includes two contact wheels installed on the piston rod along the length direction of the tube channel, and the two contact wheels are respectively abutted on both sides of the driving ring plate. The driving force of the driving cylinder on the driving ring plate is transmitted through the two contact wheels, which not only ensures the linear movement of the driving ring plate, but also avoids interference with the rotational movement of the driving ring plate. The arrangement of the two driving cylinders can ensure the uniformity of the force applied to the driving ring plate.

[0019] Furthermore, the tube feeding mechanism includes a tube unwinding part, a tube straightening part, and a tube conveying part arranged in sequence, wherein the tube conveying part includes a conveying channel, and conveying guide pipes facing the tube straightening part and the tube peeling mechanism are respectively provided at both ends of the conveying channel, and the conveying guide pipes are provided for the corrugated tube to pass through. The corrugated tube unwound by the tube unwinding part can be straightened by the tube straightening part, so as to facilitate the conveying of the corrugated tube in the tube conveying part, and the conveying guide pipes provided at both ends of the conveying channel can guide the conveying of the corrugated tube, so as to facilitate the smooth conveying of the corrugated tube.

[0020] Furthermore, it also includes a flipping and unloading mechanism, which includes a push plate assembly and a material receiving platform respectively located on both sides of the operating table; the operating table includes at least one group of operating parts arranged along the length direction of the tube body channel, each group of operating parts includes a vertical frame and a table plate pivotally connected to the vertical frame, and the upper end surface of the table plate is defined to form a receiving surface; the push plate assembly and the operating part are arranged in a one-to-one correspondence to push the corresponding table plate to rotate along the vertical frame; the material receiving platform is used to receive the corrugated pipe falling from the table plate.

[0021] When the corrugated tube completes the threading operation on the operating table, the push plate assembly pushes the table to rotate toward the material receiving platform, so that the corrugated tube on the table can fall onto the material receiving platform under the action of its own weight, thereby realizing the unloading operation of the corrugated tube; when the corrugated tube falls onto the material receiving platform, the push plate assembly drives the table to rotate in the opposite direction again to reset the table, thereby facilitating the operating table to perform the threading operation on the next corrugated tube.

[0022] The second technical solution adopted by the present invention is: a pipe threading method used for any of the above-mentioned automatic pipe cutting and threading machines, comprising the following steps:

[0023] A magnetic suspension part is arranged in the tube channel, and one end of the wire harness is fixed to the magnetic suspension part, and the other end is naturally placed on the receiving surface;

[0024] The corrugated tube transported by the tube feeding mechanism can move along the tube channel to the magnetic suspension part and be sleeved onto the wire harness located on the magnetic suspension part; as the corrugated tube continues to move, one end of the corrugated tube can extend out of the tube channel;

[0025] The tube pulling assembly then pulls the corrugated tube to move toward the receiving surface so that the corrugated tube can be sleeved onto the wire harness located on the receiving surface.

[0026] The beneficial effects of the pipe threading method of the present invention are:

[0027] The wire harness is suspended by the magnetic suspension part, and the corrugated tube is limitedly transported through the tube body channel so that the corrugated tube can be smoothly put on the suspended end of the wire harness; then the corrugated tube is pulled by the tube pulling assembly to continue to be put on the wire harness, so as to form a threading method in which the wire harness is stationary and the corrugated tube is moved and put on, so that the threading operation is not limited by the length specification of the corrugated tube, which greatly reduces the difficulty of threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the automatic tube cutting and threading integrated machine according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a pipe threading mechanism according to an embodiment of the present invention;

[0030] Figure 3 It is a structural schematic diagram of a wiring harness positioning assembly according to an embodiment of the present invention;

[0031] Figure 4 It is a structural schematic diagram of a tube drawing assembly according to an embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the structure of the cooperation between the tube peeling mechanism and the wire harness positioning assembly according to an embodiment of the present invention;

[0033] Figure 6 It is a structural schematic diagram of a tube peeling mechanism according to an embodiment of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a cutting knife assembly according to an embodiment of the present invention;

[0035] Figure 8 It is a structural schematic diagram of a cutter driving unit according to an embodiment of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of a cutting knife according to an embodiment of the present invention;

[0037] Fig.10This is a schematic diagram of the structure of the driving ring plate, the driving plate and the cutting knife in the embodiment of the present invention;

[0038] Fig.11 This is a structural schematic diagram of a tube feeding mechanism according to an embodiment of the present invention;

[0039] Fig.12 It is a schematic structural diagram of the pipe conveying portion according to an embodiment of the present invention.

[0040] In the figure:

[0041] 1-Machine;

[0042] 2-tube feeding mechanism; 21-tube unwinding section; 22-tube straightening section; 23-tube conveying section; 231-conveying guide tube;

[0043] 3-tube peeling mechanism; 30-visual inspection camera; 31-peeling base; 32-limiting tube base; 33-rotating body; 331-rotating drum; 332-rotating driving member; 34-cutter base plate; 35-cutter; 351-moving plate; 352-blade; 353-guide rod; 354-roller; 36-elastic member; 37-driving plate; 371-wedge surface; 38-driving ring plate; 39-driving cylinder; 391-contact wheel;

[0044] 4-tube threading mechanism; 41-operating table; 411-supporting surface; 412-stand; 413-table; 42-wire harness positioning assembly; 421-magnetic ring; 422-magnetic rod; 423-fixed base; 424-guide seat; 43-pull tube assembly; 431-clamping base; 432-first pneumatic clamp; 433-linear drive module; 434-linear guide part;

[0045] 5- bellows;

[0046] 6-tube support;

[0047] 71-push plate assembly; 72-material receiving platform. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0049] Example

[0050] See attached Figure 1-4 As shown in FIG. 1 , an automatic tube cutting and threading machine of the present invention comprises a machine platform 1 and a tube feeding mechanism 2, a tube peeling mechanism 3, and a tube threading mechanism 4 which are sequentially arranged on the machine platform 1. The tube peeling mechanism 3 and the tube threading mechanism 4 are both provided with a tube channel for the corrugated tube 5 to be threaded. Figure 2-4 As shown, the tube threading mechanism 4 includes an operating table 41, a wire harness positioning assembly 42, and a tube pulling assembly 43. The operating table 41 is provided with a receiving surface 411 for placing the wire harness (not shown in the figure); the wire harness positioning assembly 42 is located between the tube peeling mechanism 3 and the operating table 41, and includes a magnetic suspension portion built into the tube channel, and the magnetic suspension portion is used to position one end of the wire harness; the tube pulling assembly 43 is used to pull the corrugated tube onto the wire harness located on the receiving surface 411.

[0051] During operation, the wire harness is fed onto the receiving surface 411, and one end of the wire harness is fixed to the magnetic suspension part, and the other end is naturally placed on the receiving surface 411; the corrugated tube 5 on the tube feeding mechanism 2 passes through the tube peeling mechanism 3 and the tube threading mechanism 4 in sequence along the tube channel, and when the corrugated tube 5 moves to the magnetic suspension part, the corrugated tube 5 can be put onto one end of the wire harness located on the magnetic suspension part. Since the wire harness is limited by the magnetic suspension part, when the corrugated tube 5 continues to move, one end of the corrugated tube 5 toward the tube threading mechanism 4 can extend out of the tube channel, and continue to be put onto the wire harness along the length direction of the wire harness under the action of the pulling tube assembly 43.

[0052] In some embodiments, see Appendix Figure 3 As shown, the magnetic suspension part includes a magnetic ring 421 and a magnetic rod 422 with the same polarity. The magnetic ring 421 is coaxially arranged in the tube channel, and the axis of the magnetic ring 421 is located above the receiving surface 411. The magnetic rod 422 is coaxially penetrated in the magnetic ring 421, and the side close to the operating table 41 is used for wiring harness connection; the inner diameter of the magnetic ring 421 is larger than the outer diameter of the corrugated tube 5, and the outer diameter of the magnetic rod 422 is smaller than the inner diameter of the corrugated tube 5.

[0053] Since the magnetic ring 421 and the magnetic bar 422 have the same polarity, the magnetic bar 422 can be suspended on the axis of the magnetic ring 421, so that one end of the wire harness connected to the magnetic bar 422 can be suspended on the axis of the magnetic ring 421; and since the axis of the magnetic ring 421 is located above the receiving surface 411, at this time, the wire harness can present a state in which one end connected to the magnetic bar 422 is suspended in the air and the other end naturally falls on the receiving surface 411. By limiting the radial dimensions of the bellows 5, the magnetic ring 421, and the magnetic bar 422, the bellows 5 can be inserted and moved between the magnetic ring 421 and the magnetic bar 422, and the bellows 5 will not contact the magnetic ring 421 and the magnetic bar 422 during the movement, and will not interfere with the magnetic force between the magnetic ring 421 and the magnetic bar 422.

[0054] It should be noted that the connection between the wire harness and the magnetic bar 422 can be made in a connection method that is easy to disassemble, such as winding the wire harness around the magnetic bar 422. For example, the end of the wire harness of some pipe-threading products is equipped with a spring. For such products, the outer diameter of the magnetic bar 422 can be set to be slightly larger than the diameter of the spring, and then the spring can be sleeved on the magnetic bar 422. At this time, the end of the wire harness equipped with the spring can be suspended on the magnetic bar 422; and when the pipe-threading operation is completed, the spring can be detached from the magnetic bar 422 by applying force to pull the end of the wire harness close to the magnetic bar 422.

[0055] In some embodiments, see Appendix Figure 4 As shown, the tube pulling assembly 43 is arranged on one side of the operating table 41, and includes a moving part and a clamping part, wherein the clamping part is used to clamp the corrugated tube 5, and the moving part is used to drive the clamping part to move back and forth along the length direction of the tube body channel so as to put the corrugated tube 5 in the tube body channel onto the wire harness located on the receiving surface 411.

[0056] Specifically, the clamping part includes a clamping base 431, and a first pneumatic clamping jaw 432 capable of lifting and moving is provided on the clamping base 431. The first pneumatic clamping jaw 432 is located directly above the receiving surface 411, and is used to clamp the corrugated tube 5. The first pneumatic clamping jaw 432 is set to be movable and lifted in order to coordinate and adjust the clamping height of the corrugated tube 5, so that the corrugated tube 5 is always located on the same axis as the magnetic ring 421 and the magnetic rod 422 during the threading process, and a gap is always maintained between the magnetic ring 421 and the magnetic rod 422, so as to prevent the corrugated tube 5 from touching the magnetic ring 521 or the magnetic rod 422.

[0057] Furthermore, the moving part includes a linear drive module 433, at least one side of the linear drive module 433 is provided with a linear guide part 434, and the clamping base 431 is slidably set on the linear guide part 434, and can move under the action of the linear drive module 433. In the moving part, the moving direction of the clamping part is guided by the linear guide part 434, so that the movement of the clamping part is more stable. It should be noted that the setting of the linear drive module 433 and the linear guide part 434 is the prior art, and the present embodiment does not elaborate on its structure. For example, the linear drive module 433 can adopt a synchronous belt group, a linear screw and other driving parts that can realize linear movement, and the linear guide part 434 can adopt a straight rail and the like.

[0058] In order to reduce the sagging phenomenon of the bellows 5 during the movement, in some embodiments, see the attached Figure 3As shown, the harness positioning assembly 42 also includes a fixed base 423, on which a limiting through hole for accommodating the magnetic suspension part is provided; and at least one side of the limiting through hole is provided with a guide seat 424 that is connected with the limiting through hole and through which the corrugated tube 5 is passed. The guide seat 424 is fixedly connected to the fixed base 423, and is provided with a guide through hole coaxially arranged with the limiting through hole. The guiding support of the corrugated tube 5 by the guide through hole can effectively suppress the tendency of the corrugated tube 5 to fall on both sides of the harness positioning assembly 42.

[0059] In the process of the corrugated tube 5 being pulled by the tube drawing assembly 43 and moving toward the receiving surface 411, when the corrugated tube 5 reaches a specified length, the corrugated tube 5 needs to be cut by the tube body rotary cutting mechanism 3. Figure 5-8 As shown, the tube peeling mechanism 3 is located between the tube feeding mechanism 2 and the tube threading mechanism 4, and includes a peeling base 31 and a peeling assembly installed on the peeling base 31. Among them, the peeling base 31 is provided with a limit tube seat 32 for the corrugated tube 5 to pass through, and the inner diameter of the limit tube seat 32 is adapted to the outer diameter of the corrugated tube 5. The peeling assembly includes a rotating body 33 sleeved on the limit tube seat 32, and a cutting knife assembly for cutting the corrugated tube 5 is provided on the side of the rotating body 33 close to the tube threading mechanism 4. The position of the corrugated tube 5 is limited by the limit tube seat 32, which not only ensures the conveying of the corrugated tube 5 to the tube threading mechanism 4, but also avoids the shaking of the corrugated tube 5 during the cutting process; and the peeling operation of the corrugated tube 5 is realized by the cooperation of the rotating body 33 and the cutting knife assembly.

[0060] It should be noted that the interior of the limiting tube seat 32, the guide through-hole of the guide seat 424, and the limiting through-hole of the fixed base 423 together form the above-mentioned tube body channel, and a spacing is left between the limiting tube seat 32 and the fixed base 423 (or the guide seat 424 on the side of the fixed base 423 facing the limiting tube seat 32) so that the corrugated tube 5 in the tube body channel can be exposed between the limiting tube seat 32 and the fixed base 423 (or the guide seat 424 on the side of the fixed base 423 facing the limiting tube seat 32) for rotary cutting by the cutting knife assembly.

[0061] For details, see the attached Figure 7 As shown, the cutter assembly includes a cutter substrate 34, a cutter driving unit and a plurality of cutters 35. The cutter substrate 34 is connected to the rotating body 33, and a limit tube seat 32 is provided through the middle thereof. The plurality of cutters 35 are evenly distributed on the cutter substrate 34 around the limit tube seat 32, and can move along the cutter substrate 34 toward or away from the limit tube seat 32. By the plurality of cutters 35 synchronously moving toward or away from the limit tube seat 32, the plurality of cutters 35 can present a radial expansion and contraction posture, so as to realize the cutting of the corrugated tube 5. By way of example, three cutters 35 can be provided.

[0062] For further information, see Appendix Figure 7, 9 As shown, a cutter base plate 34 is provided with a cutter groove corresponding to the cutter 35, and the cutter 35 includes a movable plate 351 located in the corresponding cutter groove, a blade 352 is installed at one end of the movable plate 351, and the other end is driven by the cutter drive unit, and an elastic member 36 is connected between the movable plate 351 and the cutter base plate 34. The blade 352 can flexibly cut the corrugated tube 5 by setting the elastic member 36. Exemplarily, the elastic member 36 can be a spring. In addition, in order to guide the movement of the movable plate 351, a guide rod 353 that penetrates the movable plate 351 can also be set in the cutter groove to limit the movable plate 351 to move only in the radial direction.

[0063] Accordingly, in some embodiments, see the attached Fig.10 As shown, the cutter drive unit includes a drive plate 37 arranged in one-to-one correspondence with the movable plate 351, and the drive plate 37 can reciprocate along the length direction of the tube body channel, and a wedge surface 371 is provided on the side of the drive plate 37 close to the corresponding movable plate 351. When the drive plate 37 moves along the length direction of the tube body channel, the wedge surface 371 moves along the length direction of the tube body channel, and then can push the push plate 351 to move radially. Furthermore, in order to reduce the friction resistance between the wedge surface 371 and the movable plate 351, a roller 354 that can abut on the wedge surface 371 is installed at the end of the movable plate 351 away from the blade 352.

[0064] In order to ensure that the multiple driving plates 37 drive the multiple moving plates 351 synchronously, in some embodiments, see the attached Figure 8 , 10 As shown, the cutter drive unit also includes a drive ring plate 38 that can move toward or away from the cutter base plate 34 (i.e., the length direction of the tube channel) under the action of the drive member. The drive ring plate 38 is sleeved on the rotating body 33, and is connected to the cutter base plate 34 through a plurality of guide rods, and all the drive plates 37 are fixedly connected to the side of the drive ring plate 38 facing the cutter base plate 34. Fig.10 The figure shows a structure in which a driving plate 37 cooperates with a cutting knife. When the driving member drives the driving ring plate 38 to move, all driving plates 37 can move synchronously, so that all wedge surfaces 371 can abut against all moving plates 351 synchronously, so that the displacement of all moving plates 351 in the radial direction of the bellows 5 remains synchronized.

[0065] It should be noted that since the cutter base plate 34 can rotate synchronously with the rotating body 33, in order to ensure that the driving plate 37 drives the moving plate 351, the driving ring plate 38 also needs to rotate synchronously with the cutter base plate 34. That is, the driving ring plate 38 needs to perform both rotational movement and linear movement along the length direction of the tube channel. On this basis, see the attached Figure 8As shown, the driving member includes a driving cylinder 39 symmetrically arranged on both sides of the rotating body 33, the driving cylinder 39 is installed on the rotary cutting base 31, and a contact member is provided on the piston rod thereof for pushing the driving ring plate 38 to move. The contact member includes two contact wheels 391 installed on the piston rod along the length direction of the tube body channel, and the two contact wheels 391 are respectively abutted against the two sides of the driving ring plate 38.

[0066] When the piston rod is extended, one of the contact wheels 391 can push against the drive ring plate 38, so that the drive ring plate 38 can move synchronously toward the direction close to the cutter substrate 34; and when the piston rod is retracted, the other contact wheel 391 can push against the drive ring plate 38, so that the drive ring plate 38 can move synchronously away from the cutter substrate 34; when the cutter substrate 34 rotates, due to the guidance of multiple guide rods, the drive ring plate 38 can rotate synchronously with the cutter substrate 34, so that both contact wheels 391 can roll along the drive ring plate 38. The driving force of the drive cylinder 39 on the drive ring plate 38 is transmitted through the two contact wheels 391, which not only ensures the linear movement of the drive ring plate 38, but also avoids interference with the rotational movement of the drive ring plate 38. The provision of two drive cylinders 39 can ensure the uniformity of the force applied to the drive ring plate 38.

[0067] In some embodiments, see Appendix Figure 8 As shown, the rotating body 33 includes a rotating drum 331 sleeved on the limiting tube seat 32, and the rotating drum 331 is connected to a rotating driving member 332 installed on the rotary cutting base 31 through a key.

[0068] The working process of the tube peeling mechanism of the present invention is as follows: when the corrugated tube 5 located in the cutting area of ​​the tube peeling mechanism 3 reaches the specified cutting length, the driving cylinder 39 is started, the piston rod is immediately extended, and the driving ring plate 38 is immediately pushed toward the direction of the cutting knife base plate 34 under the push of the contact wheel 391, and the wedge surface 371 of the driving plate 37 is immediately pushed to push the plate 351 to radially contract until the blade 352 contacts the corrugated tube 5. At this time, the elastic member 36 is in a compressed state; the rotating driving member 332 is started, the rotating drum 331 is immediately rotated, and the cutting knife base plate 34 is driven to rotate, and the blade 352 is immediately peeled on the corrugated tube 5. At this time, the driving ring plate 38 rotates synchronously with the cutter base plate 34 under the action of the guide rod, so that the driving plate 37 and the corresponding movable plate 351 maintain the wedge-shaped surface 371 pushing against each other, thereby ensuring the uniformity of the cutting depth during the rotation of the blade 352; when the cutting of the corrugated tube 5 is completed, the rotating driving member 332 is turned off, the rotating drum 331 stops rotating immediately, and the cutter base plate 34 and the blade 352 stop rotating; the driving cylinder 39 is started in the reverse direction, the piston rod is retracted, the driving ring plate 38 is reset immediately, and the wedge-shaped surface 371 of the driving plate 37 is driven to reset; at this time, the movable plate 351 is reset under the action of the elastic member 36.

[0069] Since the wall of the corrugated tube 5 has wave crests and wave troughs, in order to unify the peeling position of the corrugated tube 5, in some embodiments, see the attached Figure 5 As shown, the tube peeling mechanism 3 further includes a visual inspection camera 30 located on one side of the peeling base 31 , and the visual inspection camera 30 is used to inspect the cutting position of the corrugated tube 5 .

[0070] For further information, see Appendix Figure 5 As shown, a tube support 6 is further provided between the rotary cutting base 31 and the fixed base 423. Specifically, the tube support 6 includes a second pneumatic clamp that can be lifted and moved, and the second pneumatic clamp is used to clamp the corrugated tube 5 exposed between the limiting tube seat 32 and the fixed base 423 (or the guide seat 424 on the side of the fixed base 423 facing the limiting tube seat 32), so as to enhance the stable support of the corrugated tube 5 when the cutter assembly cuts the corrugated tube 5.

[0071] In some embodiments, see Appendix Figure 11-12 As shown, the tube feeding mechanism 2 includes a tube unwinding portion 21, a tube straightening portion 22, and a tube conveying portion 23 arranged in sequence. Among them, the tube conveying portion 23 includes a conveying channel, and conveying guide pipes 231 facing the tube straightening portion 22 and the tube peeling mechanism 3 are respectively provided at both ends of the conveying channel, and the conveying guide pipes 231 are provided for the corrugated tube 5 to pass through. The corrugated tube 5 unwound by the tube unwinding portion 21 can be straightened by the tube straightening portion 22, so as to facilitate the conveying of the corrugated tube 5 in the tube conveying portion 23. The conveying guide pipes 231 provided at both ends of the conveying channel can guide the conveying of the corrugated tube 5, so as to facilitate the smooth conveying of the corrugated tube 5.

[0072] In some embodiments, after the threading operation of the bellows 5 is completed, the bellows 5 located on the operating table 41 needs to be unloaded. Figure 2 , 4As shown, the machine 1 is provided with a flipping and unloading mechanism, which includes a push plate assembly 71 and a material receiving platform 72 respectively located on both sides of the operating platform 41. The operating platform 41 includes at least one set of operating parts, each set of operating parts includes a stand 412 and a table 413 pivotally connected to the stand 412, and the upper end surface of the table 413 defines a receiving surface 411. The push plate assembly 71 is arranged one by one with the operating part, and is used to push the corresponding table 413 to rotate along the stand 412. The material receiving platform 72 is used to receive the corrugated tube 5 dropped from the table 413. When the bellows 5 completes the threading operation on the operating table 41, the push plate assembly 71 pushes the table 413 to rotate toward the material receiving platform 72, so that the bellows 5 located on the table 413 can fall onto the material receiving platform 72 under the action of its own weight, thereby realizing the unloading operation of the bellows 5; when the bellows 5 falls onto the material receiving platform 72, the push plate assembly 71 again drives the table 413 to rotate in the opposite direction to reset the table 413, thereby facilitating the operating table 41 to perform the threading operation on the next bellows 5.

[0073] In the operating table 41, at least one group of operating parts arranged along the threading direction of the corrugated tube 5 can flexibly select the required number of operating parts according to the length of the corrugated tube 5, that is, when the length of the corrugated tube 5 is less than the length of a single group of operating parts, at this time, only a single group of operating parts and the corresponding push plate assembly 71 need to be enabled; and when the length of the corrugated tube 5 is between the length of a single group of operating parts and the length of two groups of operating parts, at this time, two groups of operating parts and the corresponding push plate assemblies 71 can be enabled at the same time. The push plate assembly 71 is then used to realize the independent rotation of the corresponding operating part, which can facilitate the unloading of corrugated tubes of different length specifications. Exemplarily, two groups of operating parts are provided, and two groups of corresponding push plate assemblies 71 are also provided.

[0074] In order to ensure that the bellows 5 can smoothly enter the material receiving platform 72, in some embodiments, see the attached Figure 4 As shown, the side of the material receiving platform 72 close to the platen 413 is higher than the side away from the platen 413 , so as to facilitate the platen 413 to abut against the material receiving platform 72 more quickly.

[0075] In some embodiments, the push plate assembly 71 may adopt a push cylinder, and the cylinder barrel of the push cylinder is pivotally connected to the machine table, and the piston rod is pivotally connected to the table plate 413.

[0076] The present invention also provides a tube threading method for an automatic tube cutting and threading machine, comprising the following steps: a magnetic suspension portion is arranged in the tube body channel, and one end of the wire harness is fixed to the magnetic suspension portion, and the other end is naturally placed on a receiving surface; the corrugated tube transported by the tube body feeding mechanism can move along the tube body channel to the magnetic suspension portion, and be sleeved onto the wire harness located on the magnetic suspension portion; as the corrugated tube continues to move, one end of the corrugated tube can extend out of the tube body channel; the tube pulling assembly then pulls the corrugated tube toward the receiving surface, so that the corrugated tube can be sleeved onto the wire harness located on the receiving surface.

[0077] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic tube cutting and threading machine, characterized in that: It includes a machine platform and a tube feeding mechanism, a tube peeling mechanism, and a tube threading mechanism which are sequentially arranged on the machine platform; the tube peeling mechanism and the tube threading mechanism are both provided with a tube channel for the corrugated tube to pass through; The pipe threading mechanism includes an operating table, a wire harness positioning assembly, and a tube pulling assembly. The operating table is provided with a receiving surface for placing the wire harness. The wire harness positioning assembly is located between the pipe peeling mechanism and the operating table, and includes a magnetic suspension part built into the pipe channel, and the magnetic suspension part is used to position one end of the wire harness. The tube pulling assembly is used to pull the corrugated tube in the pipe channel to fit onto the wire harness located on the receiving surface. The magnetic suspension part includes a magnetic ring and a magnetic rod with the same polarity; the magnetic ring is coaxially arranged in the tube channel, and the axis of the magnetic ring is located above the receiving surface; the magnetic rod is coaxially passed through the magnetic ring, and its side close to the operating table is used for the wiring harness connection; the inner diameter of the magnetic ring is larger than the outer diameter of the corrugated tube, and the outer diameter of the magnetic rod is smaller than the inner diameter of the corrugated tube.

2. The automatic tube cutting and threading machine according to claim 1, characterized in that: The tube body rotary cutting mechanism includes a rotary cutting base and a rotary cutting assembly. The rotary cutting base is provided with a limiting tube seat for the corrugated tube to pass through; the rotary cutting assembly is installed on the rotary cutting base, and includes a rotating body sleeved on the limiting tube seat; the rotating body is provided with a cutting knife assembly for cutting the corrugated tube on one side close to the tube body threading mechanism.

3. The automatic tube cutting and threading machine according to claim 2, characterized in that: The cutter assembly comprises a cutter substrate, a cutter driving unit and a plurality of cutters; the cutter substrate is connected to a rotating body, and the limiting tube seat is provided through the middle thereof; the plurality of cutters are evenly distributed on the cutter substrate around the limiting tube seat, and can move radially along the cutter substrate toward or away from the limiting tube seat; the cutter driving unit comprises a driving plate arranged one-to-one corresponding to the cutters, the driving plate can move back and forth along the length direction of the tube body channel, and a wedge-shaped surface for the cutter to abut is provided on the side close to the cutter.

4. The automatic tube cutting and threading machine according to claim 3, characterized in that: The cutter comprises a movable plate, one end of which is provided with a roller capable of abutting against the wedge-shaped surface, and the other end of which is provided with a blade; an elastic member is connected between the movable plate and the cutter base plate.

5. The automatic tube cutting and threading machine according to claim 3, characterized in that: The cutter drive unit also includes a drive ring plate that can move along the length direction of the limiting tube seat under the action of a drive member. The drive ring plate is mounted on the rotating body and is connected to the cutter base plate via a guide rod; and all the drive plates are mounted on the drive ring plate.

6. The automatic tube cutting and threading machine according to claim 5, characterized in that: The driving member includes a driving cylinder symmetrically arranged on both sides of the rotating body, and a contact member for pushing the driving ring plate to move is provided on the piston rod of the driving cylinder; the contact member includes two contact wheels installed on the piston rod along the length direction of the tube channel, and the two contact wheels respectively abut against both sides of the driving ring plate.

7. The automatic tube cutting and threading machine according to claim 1, characterized in that: The tube feeding mechanism includes a tube unwinding portion, a tube straightening portion, and a tube conveying portion which are arranged in sequence, wherein the tube conveying portion includes a conveying channel, and both ends of the conveying channel are respectively provided with conveying guide pipes facing the tube straightening portion and the tube rotary cutting mechanism, and the corrugated tube is passed through the conveying guide pipe.

8. The automatic tube cutting and threading machine according to claim 1, characterized in that: It also includes a flipping and unloading mechanism, which includes a push plate assembly and a material receiving platform respectively located on both sides of the operating table; the operating table includes at least one group of operating parts, each group of the operating parts includes a vertical frame and a table plate pivotally connected to the vertical frame, and the upper end surface of the table plate is defined to form the receiving surface; the push plate assembly is arranged in a one-to-one correspondence with the operating part to push the corresponding table plate to rotate along the vertical frame; the material receiving platform is used to receive the corrugated pipe dropped from the table plate.

9. A pipe threading method for the automatic pipe cutting and threading machine according to any one of claims 1 to 8, characterized in that: The steps include: A magnetic suspension part is arranged in the tube channel, and one end of the wire harness is fixed to the magnetic suspension part, and the other end is naturally placed on the receiving surface; The corrugated tube transported by the tube feeding mechanism can move along the tube channel to the magnetic suspension part and be sleeved onto the wire harness located on the magnetic suspension part; as the corrugated tube continues to move, one end of the corrugated tube can extend out of the tube channel; The tube pulling assembly then pulls the corrugated tube to move toward the receiving surface so that the corrugated tube can be sleeved onto the wire harness located on the receiving surface.

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