Front code spraying jig

Abstract

The utility model discloses a front code spraying jig, which is arranged at the front end of a cut-off knife assembly, and comprises a driving wheel and an auxiliary wheel which are arranged side by side along a first direction, a preset gap is formed between the driving wheel and the auxiliary wheel, a wire harness can pass through the preset gap, and when the driving wheel rotates, the wire harness moves towards the advancing direction; the spray head is arranged above the preset gap; one end of the fixing rod is fixed to the center of the auxiliary wheel, the blade is arranged at the end, away from the horizontal fixing part, of the fixing rod, and the sensor is close to the blade and electrically connected with the spray head. The code spraying jig is arranged at the front end of the cut-off knife assembly, waste caused by code spraying of a section of wire harness before traditional wire cutting is reduced, code spraying is carried out while the wire harness is pulled to advance through the driving wheel and the auxiliary wheel which are arranged side by side, and ink mark scraping of the wire harness is avoided; when the wire harness advances, the blade passes through the sensor, so that the spraying head sprays codes on the wire harness, and consistency of wire passing and code spraying is achieved.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printing fixture technology, and in particular to a front-mounted inkjet printing fixture. Background Technology

[0002] Wire harness inkjet printers are devices specifically designed for marking wire harness products. They are typically used in conjunction with a cutting assembly to hold the wire harness in place, mark it, and then cut it. In existing inkjet printers, the printhead is located at the rear end of the cutting assembly and the wire feed wheel. After the wire cutter cuts the wire harness at a preset distance, the marked wire harness continues to move forward under the traction of the wire feed wheel. This results in an extra section of wire harness being marked. In addition, when marking another type of wire harness, such as marking a different number, a section of the original number marking is wasted, leading to material waste and increased costs.

[0003] Secondly, since the feed roller consists of two rollers positioned one above the other, the printed wire harness passes between the two rollers and is pulled forward by the friction of the feed roller. Therefore, the printed code on the surface of the wire harness is easily scratched by the friction of the two rollers, which affects the quality of the printing. Utility Model Content

[0004] The purpose of this invention is to provide a pre-printing fixture to solve the problems in the prior art. It can not only avoid wire harness waste, but also prevent the ink on the wire harness after printing from being scratched.

[0005] This utility model provides a front-mounted inkjet printing fixture for inkjet printing on wire harnesses. The inkjet printing fixture is disposed at the front end of the cutting blade assembly, and the inkjet printing fixture includes:

[0006] A base, wherein an L-shaped bracket is provided on one side of the base, the L-shaped bracket includes a horizontal fixing part and a vertical fixing part connected to each other, the vertical fixing part is connected to the base, and the horizontal fixing part is provided on the side away from the base;

[0007] The guiding assembly includes a drive wheel, an auxiliary wheel, and a drive component;

[0008] in:

[0009] Both the drive wheel and the auxiliary wheel are disposed on the upper surface of the horizontal fixed part. The drive wheel and the auxiliary wheel are arranged side by side along a first direction. A preset gap is formed between the drive wheel and the auxiliary wheel. The wire harness can pass through the preset gap. The drive member is disposed on the base and is connected to the drive wheel. The drive member is used to drive the drive wheel. When the drive wheel rotates, the wire harness moves in the forward direction, and the auxiliary wheel rotates synchronously.

[0010] A nozzle, in a second direction, is positioned above the preset gap, and the nozzle is used to print codes onto the passing wire harness;

[0011] A sensing component, comprising a fixed rod, a blade, and a sensor;

[0012] in:

[0013] The horizontal fixing part has a first strip groove at the position of the auxiliary wheel. One end of the fixing rod is fixed at the center of the auxiliary wheel, and the other end of the fixing rod extends downward through the first strip groove. The blade is disposed at the end of the fixing rod away from the horizontal fixing part. The sensor is disposed close to the blade and is electrically connected to the nozzle.

[0014] In the aforementioned pre-printing fixture, preferably, the auxiliary wheel includes a first one-way bearing and an outer ring disposed outside the first one-way bearing.

[0015] As described above, a pre-printing fixture preferably further includes an adjustment component for adjusting the size of the preset gap. The adjustment component includes a horizontal plate, a fixing block, and an adjustment bolt.

[0016] in:

[0017] The horizontal fixing part is provided with an extension part on the side away from the vertical fixing part. The extension part extends downward along the second direction. The horizontal plate is provided on the outer end face of the extension part. The side plate is symmetrically provided on the side of the horizontal plate facing the extension part. The side plate extends to the bottom of the horizontal fixing part. The two side plates are respectively provided with slide rails on the opposite sides.

[0018] The fixing block is disposed between the two side plates. A pulley is provided on the side of the fixing block facing the two side plates. The pulley is disposed in the slide rail. A hole is opened on the fixing block, and a second one-way bearing is disposed in the hole. The second one-way bearing is sleeved on the fixing rod.

[0019] A spring is provided on the side of the fixing block near the horizontal plate, one end of the spring is connected to the horizontal plate, and the other end of the spring is connected to the fixing block;

[0020] The fixed block has a top plate on the side opposite to the horizontal plate;

[0021] The vertical fixing part has a hole, and the adjusting bolt is inserted through the hole along the first direction. One end of the adjusting bolt abuts against the top plate, and the other end of the adjusting bolt extends to the outside of the vertical fixing part, and a nut is provided at that end.

[0022] In the aforementioned pre-printing fixture, preferably, the horizontal plate is bolted to the extension.

[0023] In the aforementioned pre-printing fixture, preferably, the driving component includes a motor, a first pulley, a second pulley, a belt, and a connecting rod.

[0024] in:

[0025] The motor is located on one side of the base, and the first pulley is located on the other side of the base;

[0026] The second pulley is disposed on the side of the vertical fixing part opposite to the first pulley. The vertical fixing part is provided with a second strip groove, and the belt passes through the second strip groove and is connected to the first pulley and the second pulley respectively.

[0027] The horizontal fixed base has a hole below the position of the drive wheel, the first end of the connecting rod is connected to the center of the drive wheel, and the second end of the connecting rod is connected to the second pulley.

[0028] In the aforementioned pre-printing fixture, preferably, the first pulley is electrically connected to the motor.

[0029] In the aforementioned pre-printing fixture, preferably, a fixing seat is provided on the side of the vertical fixing part away from the first pulley, the fixing seats are symmetrically arranged on both sides of the second pulley along the second direction, a first bearing is embedded at the center of each of the two fixing seats, and the second end of the connecting rod is connected to the two first bearings respectively.

[0030] In the aforementioned pre-printing fixture, preferably, a magnet seat is provided on the base, a support screw is provided on the magnet seat, and the sensor is connected to the support screw.

[0031] In the aforementioned pre-printing fixture, preferably, a C-shaped clamp is provided on one side of the top of the base.

[0032] Compared with the prior art, this utility model sets the coding fixture at the front end of the cutting assembly and the wire exit wheel. After the preset coding length is completed, the cutting assembly cuts the wire harness, and the coding fixture codes the remaining wire harness. This reduces the waste of coding a section of wire harness before cutting, which is traditionally done. By driving the wire harness forward with the parallel drive wheel and auxiliary wheel, coding is performed at the same time, avoiding the ink scratches caused by the wire harness passing through the wire exit wheel after coding.

[0033] The printhead is connected to the sensor. When the wire harness moves forward, the blades rotate synchronously. The blades pass through the sensor, causing the printhead to print the wire harness, thus achieving consistency between the wire harness passage and the printing. This pre-printing fixture not only reduces wire harness waste but also prevents ink from being scratched, improving the quality of the printing. Attached Figure Description

[0034] Figure 1 This is a perspective view of the front-end coding fixture provided in an embodiment of this utility model;

[0035] Figure 2 This is a side view of the front-mounted inkjet printing fixture provided in an embodiment of this utility model;

[0036] Figure 3 This is a side perspective view of the front-mounted inkjet printing fixture provided in an embodiment of this utility model;

[0037] Figure 4 This is a perspective view of the L-shaped bracket provided in an embodiment of this utility model;

[0038] Figure 5 This is a cross-sectional view of the front-end inkjet printing fixture provided in an embodiment of this utility model;

[0039] Figure 6 This is a perspective view of the adjustment component provided in an embodiment of the present invention;

[0040] Figure 7 This is another side perspective view of the front-mounted inkjet printing fixture provided in an embodiment of this utility model;

[0041] Figure 8 This is a diagram illustrating the effect of using the pre-printing fixture provided in an embodiment of this utility model.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1-Inkjet jig, 2-Equipment platform, 3-Cutter assembly, 4-Infeed wheel, 5-Conveyor pipe, 6-Outfeed wheel;

[0044] 10-Base;

[0045] 20 - Vertical fixing part, 21 - Horizontal fixing part, 211 - First strip groove, 212 - Extension part;

[0046] 30-Drive wheel, 31-Auxiliary wheel, 311-First one-way bearing, 312-Outer ring, 32-Preset clearance;

[0047] 40- Nozzle;

[0048] 50-Fixed rod, 51-Blade, 52-Sensor, 53-Magnet base, 54-Support screw;

[0049] 60-Horizontal plate, 601-Side plate, 6011-Slide rail, 61-Fixing block, 611-Pulley, 62-Adjusting bolt, 63-Second one-way bearing, 64-Spring, 65-Top plate;

[0050] 70-First pulley, 71-Second pulley, 72-Belt, 73-Connecting rod, 74-Fixed seat, 75-First bearing, 76-Second groove, 77-Motor;

[0051] 80-C clip;

[0052] D1 - First direction, D2 - Second direction. Detailed Implementation

[0053] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0054] See Figure 1-8 A pre-printing fixture 1 is used for printing codes on wire harnesses, see details below. Figure 8 As shown, the wire harness inkjet printer is a device that integrates inkjet printing and wire cutting. In traditional wire harness inkjet printers, the inkjet printing fixture 1 is located at the rear end of the wire cutting assembly 3 and the wire output wheel 6. After cutting the wire harness, an excess section of wire harness will be printed, resulting in waste of raw materials. In this embodiment, the inkjet printing fixture 1 is located at the front end of the cutting assembly 3 and the wire output wheel 6. Along the direction of wire harness movement, the wire inlet wheel 4, the cutting assembly 3, the wire output wheel 6, and the inkjet printing fixture 1 are arranged in sequence. The wire output wheel 6 is located close to the inkjet printing fixture 1. The output direction of the wire inlet wheel 4 is provided with a conveying pipe 5. The conveying pipe 5 is used to guide the wire harness conveyed from the wire inlet wheel 4 to the wire output wheel 6 to ensure the accuracy of the wire harness movement. One end of the conveying pipe 5 is close to the wire inlet wheel 4, and the other end of the conveying pipe 5 is close to the cutting assembly 3. When the preset printing length is reached, the cutting assembly 3 cuts the wire harness. Since the inkjet printing fixture 1 is located at the front end of the cutting assembly 3, the wire harness will not be printed with excess ink, reducing the waste of wire harness.

[0055] The coding fixture 1 includes: a base 10, which is mounted on the equipment platform 2. An L-shaped bracket is provided on one side of the base 10. The L-shaped bracket includes a horizontal fixing part 21 and a vertical fixing part 20 that are connected to each other. The vertical fixing part 20 is connected to the base 10, and the horizontal fixing part 21 is located on the side away from the base 10.

[0056] See Figure 1-2 As shown, the guide assembly includes a drive wheel 30, an auxiliary wheel 31, and a drive component;

[0057] In this embodiment, both the drive wheel 30 and the auxiliary wheel 31 are disposed on the upper surface of the horizontal fixed part 21. The drive wheel 30 and the auxiliary wheel 31 are arranged side by side along the first direction D1, and a preset gap 32 is formed between the drive wheel 30 and the auxiliary wheel 31. The wire harness can pass through the preset gap 32. The drive member is disposed on the base 10 and is connected to the drive wheel 30. The drive member is used to drive the drive wheel 30. When the drive wheel 30 rotates, the wire harness moves in the forward direction, and the auxiliary wheel 31 rotates synchronously. The guide component is used to pull the wire harness forward. The drive wheel 30 and the auxiliary wheel 31 are arranged side by side, and the wire harness passes through the preset gap 32. In this embodiment, the wire harness is removed after being printed by the inkjet jig 1. Therefore, it can effectively avoid the problem that the ink on the printed part of the wire harness is scratched by friction during the conveying process of the upper and lower output wheels 6 when the wire harness moves to the output wheel 6 for cutting after printing. This increases the printing quality of the wire harness.

[0058] It should be noted that, in order to ensure that the wire harness delivered by the feed roller 6 can accurately enter the preset gap 32, a guide tube (not shown in the figure) is also provided between the output roller 6 and the coding fixture 1. One end of the guide tube is close to the output roller 6, and the other end of the guide tube is close to the preset gap 32. The guide tube is used to guide the direction of the wire harness and provide a specific path for the wire harness between the output roller 6 and the preset gap 32, so as to prevent the wire harness from deviating during the delivery process. The guide tube can be a horn tube, etc. When a horn tube is used, the side with the larger opening of the horn tube faces the output roller 6.

[0059] The printhead 40 is positioned above the preset gap 32 in the second direction D2 and is used to print codes onto the passing wire harness. In this embodiment, the second direction D2 is the direction of gravity, and the first direction D1 is perpendicular to the second direction D2. In this embodiment, to ensure that the printhead 40 can print clear characters, the thickness of the infeed wheel 4 and the outfeed wheel 6 is designed to be the same, and the thickness of the drive wheel 30 and the auxiliary wheel 31 is half that of the outfeed wheel 6 or the infeed wheel 4, thereby reducing the distance between the printhead 40 and the wire harness, ensuring clear printing, and preventing ink droplet diffusion.

[0060] The sensing component includes a fixed rod 50, a blade 51, and a sensor 52.

[0061] Wherein: the horizontal fixing part 21 has a first strip groove 211 at the position of the auxiliary wheel 31, one end of the fixing rod 50 is fixed at the center of the auxiliary wheel 31, the other end of the fixing rod 50 extends downward through the first strip groove 211, the blade 51 is set at the end of the fixing rod 50 away from the horizontal fixing part 21, the sensor 52 is set close to the blade 51, and the sensor 52 is electrically connected to the nozzle 40. The fixed rod 50 is connected to the auxiliary wheel 31. When the drive wheel 30 is driven, the auxiliary wheel 31 and the drive wheel 30 rotate synchronously under the action of friction, and the wire harness moves forward. The rotation of the auxiliary wheel 31 drives the fixed rod 50 to rotate, thereby causing the blades 51 to rotate synchronously. Since the sensor 52 is close to the blades 51, the sensor 52 is electrically connected to the nozzle 40. When the blades 51 pass the sensor 52, the nozzle 40 sprays codes onto the wire harness. The number of blades 51 can be determined according to the required number of codes to be sprayed. In this embodiment, five blades 51 are provided, that is, when the auxiliary wheel 31 rotates one revolution, the five blades 51 will spray five codes onto the wire harness that passes through in one revolution. In this embodiment, the blades 51 and the fixed rod 50 are detachably connected to facilitate the replacement of different numbers of blades 51.

[0062] In one possible implementation, see [link to implementation details]. Figure 6 As shown, the auxiliary wheel 31 includes a first one-way bearing 311 and an outer ring 312 disposed outside the first one-way bearing 311. The outer ring 312 is fixed to the outer ring of the first one-way bearing 311. When the outer ring 312 moves, the outer ring of the first one-way bearing 311 is subjected to a rotational torque, and the rollers are subjected to a force and begin to roll. The rolling of the rollers generates a reaction force, causing the inner ring to also begin to rotate. When the outer ring stops rotating, the rollers immediately stop rolling, and the inner ring also stops rotating. Therefore, the use of the first one-way bearing 311 can ensure the synchronicity of the rotation of the auxiliary wheel 31.

[0063] Furthermore, after the wire harness is finished being printed, it needs to retract a short distance for the cutting assembly 3 to strip the outer layer. To prevent the blade 51 from rotating and causing repeated printing during retraction, the outer ring of the auxiliary wheel 31 needs to rotate while the inner ring remains stationary. Therefore, an outer ring 312 is fitted onto the outer ring of the first one-way bearing 311, and the outer ring 312 is fixed to the outer ring of the first one-way bearing 311. When the drive wheel 30 drives the wire harness to retract, the resulting friction causes the outer ring 312 to rotate, thereby causing the outer ring of the first one-way bearing 311 to rotate. However, the inner ring of the first one-way bearing 311 will not rotate synchronously, ensuring that the blade 51 does not rotate. In this embodiment, the diameters of the auxiliary wheel 31 and the drive wheel 30 are the same as the diameter of the output wheel 6 or the input wheel 4, thus ensuring smooth movement and unimpeded transport of the wire harness.

[0064] Furthermore, the outer surfaces of the drive wheel 30 and the outer ring 312 are made of frosted surface to increase the friction between them and the wire harness, and to ensure the synchronization of the rotation of the drive wheel 30 and the auxiliary wheel 31.

[0065] In one possible implementation, see [link to implementation details]. Figure 1-6 As shown, the coding fixture 1 also includes an adjustment component, which is used to adjust the size of the preset gap 32. Since the wire harness has different thicknesses, the preset gap 32 needs to match the thickness of the wire harness. The adjustment component includes a horizontal plate 60, a fixing block 61, and an adjustment bolt 62.

[0066] Wherein: the horizontal fixing part 21 has an extension part 212 on the side away from the vertical fixing part 20. The extension part 212 extends downward along the second direction D2. The horizontal plate 60 is provided on the outer end face of the extension part 212. The side plate 601 is symmetrically provided on the side of the horizontal plate 60 facing the extension part 212. The side plate 601 extends to the bottom of the horizontal fixing part 21. The two side plates 601 are respectively provided with slide rails 6011 on the opposite side. The extension part 212 is used to install the horizontal plate 60 and fix the horizontal plate 60 and its structure to the L-shaped bracket. The middle of the extension part 212 has an opening for the side plate 601 to extend to the bottom of the horizontal fixing part 21.

[0067] A fixing block 61 is positioned between two side plates 601. A pulley 611 is installed on the side of the fixing block 61 facing the two side plates 601, and the pulley 611 is positioned within a slide rail 6011. A hole is formed in the fixing block 61, and a second one-way bearing 63 is installed within the hole. The second one-way bearing 63 is sleeved on the fixing rod 50. The fixing block 61 can move along the first direction D1 through the cooperation of the pulley 611 and the slide rail. Since the fixing block 61 is connected to the side plate 601, and the second one-way bearing 63 is sleeved on the fixing rod 50, with one end of the fixing rod 50 connected to the inner ring of the first one-way bearing 311, when the fixing block 61 moves, it can drive the auxiliary wheel 31 to move, thereby adjusting the distance between the auxiliary wheel 31 and the drive wheel 30, i.e., the distance of the preset gap 32, to accommodate wire harnesses of different diameters. The first one-way bearing 311 and the second one-way bearing 63 have the same diameter to ensure synchronous rotation.

[0068] In this embodiment, the inner rings of the fixed rod 50, the auxiliary wheel 31, and the second one-way bearing 63 are all fitted with keyways to achieve positioning and ensure synchronous movement between the inner rings and the fixed rod 50.

[0069] A spring 64 is provided on the side of the fixing block 61 near the horizontal plate 60. One end of the spring 64 is connected to the horizontal plate 60, and the other end of the spring 64 is connected to the fixing block 61. A top plate 65 is provided on the side of the fixing block 61 away from the horizontal plate 60. A hole is provided on the vertical fixing part 20. An adjusting bolt 62 is provided through the hole along the first direction D1. One end of the adjusting bolt 62 abuts against the top plate 65, and the other end of the adjusting bolt 62 extends to the outside of the vertical fixing part 20, and a nut is provided at this end. One end of the fixing block 61 is connected to the horizontal plate 60 via the spring 64, and the other end of the fixing block 61 is connected to the adjusting bolt 62 via the top plate 65. When it is necessary to adjust the size of the preset gap 32, the adjusting bolt 62 can be pressed against the top plate 65 by adjusting the nut, the pulley 611 moves in the groove, the spring 64 is compressed, and the auxiliary wheel 31 moves to one side of the horizontal plate 60. In this embodiment, the preset gap 32 is adjusted. After the preset gap 32 is adjusted, the spring 64 and the adjusting bolt 62 can support both sides of the fixing block 61 to keep it stable. Since the diameter difference of the wire harness is small, the size range of the preset gap 32 that needs to be adjusted is also small. In order to ensure the stability of the position of the auxiliary wheel 31, a shorter spring 64 with less elasticity should be selected, which is also easier to control the force during adjustment.

[0070] Furthermore, the horizontal plate 60 is bolted to the extension 212. The horizontal plate 60 and the extension 212 are preferably connected in a detachable manner. By adjusting the position of the horizontal plate 60 connected to the extension 212, the height of the auxiliary wheel 31 can be adjusted. The purpose is to ensure that there is a certain distance between the lower end face of the auxiliary wheel 31 and the upper surface of the horizontal fixing part 21, thereby reducing friction between the two and allowing the auxiliary wheel 31 to rotate smoothly.

[0071] In one possible implementation, see [link to implementation details]. Figure 2 and Figure 7 As shown, the driving component includes a motor 77, a first pulley 70, a second pulley 71, a belt 72, and a connecting rod 73;

[0072] Wherein: the motor 77 is disposed on one side of the base 10, and the first pulley 70 is disposed on the other side of the base 10; the second pulley 71 is disposed on the side of the vertical fixing part 20 opposite to the first pulley 70, and the vertical fixing part 20 has a second strip groove 76, through which the belt 72 passes and is connected to the first pulley 70 and the second pulley 71 respectively; the horizontal fixing base 74 has a hole below the position of the drive wheel 30, the first end of the connecting rod 73 is connected to the center of the drive wheel 30, and the second end of the connecting rod 73 is connected to the second pulley 71. The first pulley 70 drives the second pulley 71 to rotate, thereby causing the connecting rod 73 to drive the drive wheel 30 to rotate.

[0073] Furthermore, the first pulley 70 is electrically connected to the motor 77. In this embodiment, the electrical connections between the first pulley 70 and the motor 77, and between the nozzle 40 and the sensor 52, are existing technologies and will not be elaborated upon here.

[0074] In this embodiment, see Figure 2 and Figure 7 As shown, a fixing seat 74 is provided on the side of the vertical fixing part 20 opposite to the first pulley 70. The fixing seats 74 are symmetrically arranged on both sides of the second pulley 71 along the second direction D2. A first bearing 75 is embedded in the center of each of the two fixing seats 74. The second end of the connecting rod 73 is connected to the two first bearings 75 respectively. The fixing seats 74 limit and fix the connecting rod 73. The first bearings 75 are ball bearings. The inner ring of the ball bearing is fixed to the connecting rod 73, and the outer ring of the ball bearing is fixed to the fixing seat 74. When the first pulley 70 drives the second pulley 71 to rotate, the connecting rod 73 rotates, which drives the inner ring of the ball bearing and the drive wheel 30 to rotate. The two fixing seats 74 make the rotation of the connecting rod 73 more stable.

[0075] Further, see Figure 1 and Figure 7 As shown, since the position of the auxiliary wheel 31 needs to be adjusted for wire harnesses of different diameters, the positions of the blade 51 and the sensor 52 will be offset. In order to ensure the accuracy of sensing, in this embodiment, a magnet seat 53 is provided on the base 10, and a support screw 54 is provided on the magnet seat 53. The sensor 52 is connected to the support screw 54. The base 10 is made of steel plate or iron material. The magnet seat 53 can be adsorbed on the base 10, or a magnetic area is provided on the base 10. By adsorbing the magnet seat 53 with the magnetic area, the position of the magnet seat 53 can be changed, thereby changing the position of the sensor 52, so as to ensure the accuracy of sensing between the sensor 52 and the blade 51.

[0076] In this embodiment, see Figure 1 As shown, a C-shaped clamp 80 is provided on one side of the top of the base 10. The base 10 can be fixedly connected to the equipment platform 2, or the base 10 can be connected to the equipment platform 2 through the C-shaped clamp 80. This allows for better movement of the inkjet fixture 1 to adapt to various production needs. The C-shaped clamp 80 is existing technology and will not be discussed further here.

[0077] The working principle of the pre-printing fixture 1 is as follows:

[0078] The wire harness passes sequentially through the infeed wheel 4, the conveying pipe 5, the cutting blade assembly 3, the outfeed wheel 6, and the guide pipe to reach the preset gap 32. The motor 77 is started, the first pulley 70 drives the second pulley 71 to rotate, and the connecting rod 73 drives the drive wheel 30 to rotate. Due to the friction between the drive wheel 30 and the wire harness, the outer ring 312 and the auxiliary wheel 31 are driven to rotate. The fixed rod 50 rotates, which drives the blade 51 to rotate. When the blade 51 passes the sensor 52, the nozzle 40 performs one coding on the wire harness. When the preset coding distance of the wire harness is completed, the cutting blade assembly 3 cuts the wire harness. At this time, the wire harness continues to move forward to complete the remaining coding. When it is necessary to retract and strip the wire harness, the motor 77 reverses, the drive wheel 30 rotates in the opposite direction, and the outer ring 312 drives the outer ring of the auxiliary wheel 31 to rotate in the opposite direction. The wire harness retracts to the cutting blade assembly 3 for stripping, while the inner ring of the auxiliary wheel 31 is locked to prevent repeated coding.

[0079] When changing wire harnesses of different diameters, adjust the nut so that the adjusting bolt 62 presses against the top plate 65, and the pulley 611 slides in the groove, thereby squeezing the spring 64 and moving the auxiliary wheel 31 away from the drive wheel 30, thereby increasing the preset gap 32 to accommodate wire harnesses of different diameters passing through.

[0080] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A pre-printing code jig for printing codes on a wire harness, characterized by, The code spraying jig is arranged at the front end of the cutter assembly (3), and the code spraying jig comprises: a base (10), one side of the base is provided with an L-shaped support, the L-shaped support comprises a horizontal fixing part (21) and a vertical fixing part (20) connected with each other, the vertical fixing part is connected with the base, and the horizontal fixing part is arranged on the side away from the base; a guide assembly comprising a driving wheel (30), an auxiliary wheel (31) and a driving member; wherein: the driving wheel and the auxiliary wheel are both arranged on the upper surface of the horizontal fixing part, the driving wheel and the auxiliary wheel are arranged side by side in a first direction (D1), a preset gap (32) is formed between the driving wheel and the auxiliary wheel, the wire harness can pass through the preset gap, the driving member is arranged on the base, the driving member is connected with the driving wheel, and the driving member is used for driving the driving wheel; when the driving wheel rotates, the wire harness moves in the forward direction, and the auxiliary wheel rotates synchronously; a spray head (40) is arranged above the preset gap in a second direction (D2), and the spray head is used for spraying code on the passing wire harness; an induction assembly comprising a fixed rod (50), a vane (51) and a sensor (52); wherein: the horizontal fixing part is provided with a first slot (211) at the position of the auxiliary wheel, one end of the fixed rod is fixed at the center of the auxiliary wheel, the other end of the fixed rod extends downward through the first slot, the vane is arranged at the end of the fixed rod away from the horizontal fixing part, the sensor is arranged close to the vane, and the sensor is electrically connected with the spray head.

2. The pre-printing code jig according to claim 1, wherein: The auxiliary wheel comprises a first one-way bearing (311) and an outer ring (312) arranged outside the first one-way bearing.

3. The pre-printing code jig according to claim 1, wherein, The code spraying jig further comprises an adjusting assembly for adjusting the size of the preset gap, the adjusting assembly comprises a cross plate (60), a fixed block (61) and an adjusting bolt (62); wherein: the side of the horizontal fixing part away from the vertical fixing part is provided with an extension part (212), the extension part extends downward along the second direction, the cross plate is arranged on the outer end face of the extension part, the side of the cross plate facing the extension part is symmetrically provided with a side plate (601), the side plate extends below the horizontal fixing part, and the opposite sides of the two side plates are respectively provided with slide rails (6011); the fixed block is arranged between the two side plates, the side of the fixed block facing the two side plates is respectively provided with a pulley (611), the pulley is arranged in the slide rail, a hole is formed in the fixed block, a second one-way bearing (63) is arranged in the hole, and the second one-way bearing is sleeved on the fixed rod; the side of the fixed block close to the cross plate is provided with a spring (64), one end of the spring is connected with the cross plate, and the other end of the spring is connected with the fixed block; the side of the fixed block away from the cross plate is provided with a top plate (65). The vertical fixing part is provided with a hole, the adjusting bolt is arranged in the hole in the first direction, one end of the adjusting bolt abuts against the top plate, and the other end of the adjusting bolt extends to the outside of the vertical fixing part and is provided with a nut.

4. The pre-printing code jig according to claim 3, wherein, The horizontal plate is bolted with the extension part.

5. The pre-printing code jig according to claim 1, wherein, The driving member comprises a motor (77), a first pulley (70), a second pulley (71), a belt (72) and a connecting rod (73). Wherein: The motor is arranged on one side of the base, and the first pulley is arranged on the other side of the base. The second pulley is arranged on the side of the vertical fixing part away from the first pulley, the vertical fixing part is provided with a second slot (76), the belt passes through the second slot and is connected with the first pulley and the second pulley respectively. The horizontal fixing seat is provided with a hole below the position of the driving wheel, the first end of the connecting rod is connected with the center of the driving wheel, and the second end of the connecting rod is connected with the second pulley.

6. The pre-printing code jig according to claim 5, wherein, The first pulley is electrically connected with the motor.

7. The pre-printing code jig according to claim 5, wherein, The side of the vertical fixing part away from the first pulley is provided with a fixing seat (74), the fixing seat is symmetrically arranged on the two sides of the second pulley in the second direction, the first bearing (75) is embedded in the center of the two fixing seats respectively, and the second end of the connecting rod is connected with the two first bearings respectively.

8. The pre-printing code jig according to claim 1, wherein, The base is provided with a magnet seat (53), the magnet seat is provided with a supporting screw rod (54), and the sensor is connected with the supporting screw rod.

9. The pre-printing code jig according to claim 1, wherein, One side of the top of the base is provided with a C-shaped clamp (80).

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