Spring wire harness automatic processing equipment with detection assembly

Abstract

The application discloses a spring wire harness automatic processing equipment with a detection assembly, and relates to the technical field of spring wire harness processing.The spring wire harness automatic processing equipment comprises a receiving assembly, the receiving assembly comprises a material taking cylinder, an ultrasonic detector, a detection probe, a feeding port, a feeding opening, a cover plate, a torsional spring hinge and a trigger rod, the ultrasonic detector is fixed to the outer wall of the material taking cylinder, and the detection probe of the input end of the ultrasonic detector extends to the inner cavity of the material taking cylinder through a cable.In the use process of the application, the spring wire body enters the inner cavity of the material taking cylinder from the front end opening of the material channel and abuts against the cover plate, so that the coils of the spring wire body abut against each other, in addition, since the spring wire body is limited by the cavity of the material channel, the coils of the spring wire body are prevented from being bowed during the abutting process, the cutting length of the spring wire body is accurately controlled, the spring wire body does not slip during cutting in the state of abutting of the coils, and the cutting precision is effectively ensured.

Description

Technical Field

[0001] The invention relates to the technical field of spring wire harness processing, in particular to spring wire harness automatic processing equipment with a detection component. Background Art

[0002] Wire harnesses can be straight or spring-shaped. Spring-shaped wire harnesses can reduce space occupancy while meeting the required length. Therefore, they are widely used, mostly in scenarios such as landline telephone lines.

[0003] During the production process of a spring-shaped wire harness, the wire harness needs to be first wrapped around a column for shaping to form a spring-shaped wire harness. The shaped wire harness is then removed from the column and cut into small sections. When cutting the spring-shaped wire harness, the spring-shaped wire harness is prone to deformation, making it difficult to ensure the cutting length of the wire harness. In addition, the wire harness needs to be fixed multiple times during the processing, which increases the complexity of the wire harness processing.

[0004] Therefore, in view of this, the shortcomings of the existing structure are studied and improved, and an automatic processing equipment for spring wire harness with a detection component is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a spring harness automatic processing device with a detection component to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatic processing equipment for spring wire harnesses with a detection component, comprising a receiving component, wherein the receiving component comprises a material taking barrel, an ultrasonic detector, a detection probe, a feed port, a delivery port, a cover plate, a torsion spring hinge and a trigger rod, an ultrasonic detector is fixed to the outer wall of the material taking barrel, and the detection probe at the input end of the ultrasonic detector is extended to the inner cavity of the material taking barrel through a cable, a feed port is provided at one end of the material taking barrel, and a delivery port is provided at the other end of the material taking barrel, the opening of the delivery port is covered with a cover plate, and the cover plate is rotatably connected to the side of the delivery port opening through a torsion spring hinge, and a trigger rod protruding from the side wall of the material taking barrel is integrally fixed to the side of the cover plate.

[0007] Furthermore, the material taking barrel is fixed to the output end of the pick-and-place assembly, and the pick-and-place assembly includes a cylinder 1, a U-shaped clamp and a slide rod. The output end of the cylinder 1 is fixedly connected to the U-shaped clamp, and the end opening of the U-shaped clamp is connected to the slide rod.

[0008] Furthermore, the pick-and-place assembly also includes side panels and swing arms. The slide rod is slidably installed in the guide grooves at the bottom ends of the side panels on both sides, and the swing arms are rotatably installed inside the side panels on both sides, and the top plane of the swing arms is fixed to the material barrel bolts.

[0009] Furthermore, the pick-and-place assembly also includes a slide groove, and the protruding portion on the bottom side of the swing arm is provided with a slide groove, and the slide groove is slidably matched with the middle portion of the slide rod.

[0010] Furthermore, the roots of the side panels on both sides are welded and fixed to the workbench, and a push pin is fixed to the middle of the front end of the workbench, and the push pin cooperates with the trigger rod to realize the opening and closing control of the cover.

[0011] Furthermore, supporting feet are fixed on both sides of the rear end of the workbench, and the ends of the supporting feet on both sides away from the workbench are fixed on both sides of the rear end of the feeding bin, and a discharge opening is opened at the top of the rear end of the feeding bin.

[0012] Furthermore, a material channel is opened axially through the middle of the feeding bin, and the top of the rear end of the material channel is connected to the discharge opening. A spring wire body is placed inside the material channel, and the spring wire body extends to the inside of the material taking barrel.

[0013] Furthermore, the rear end of the feeding bin is bolted with a second cylinder, and the output end of the second cylinder is fixedly connected with a push rod, and the push rod slides in the material channel to realize the step-by-step pushing of the spring wire body.

[0014] Furthermore, the bottom of the front end of the feeding bin is fixed to the rear end of the side plate through an "L"-shaped fixed plate, and a waste trough is supported on the top of the fixed plate, and the waste trough is located below the front end opening of the material channel.

[0015] Furthermore, cutting components are provided at the upper and lower ends of the front end opening of the material channel, and the cutting components include a mounting plate, a groove, a slider, a rack, a connecting rod, a cutting knife, a gear and a motor. The mounting plate is bolted to one side of the front end opening of the material channel, and grooves are provided on both sides of the front end of the mounting plate. Sliders that are staggered up and down are slidably installed inside the grooves on both sides, and racks are fixed on the inner sides of the opposite surfaces of the sliders on both sides. Connecting rods are bolted to the top ends of the sliders on both sides toward the direction of the material channel, and cutting knives are fixed on the upper and lower opposite surfaces of the connecting rods on both sides. A gear is rotatably installed on the middle part of the front end of the mounting plate, and the teeth on the outer edge of the gear are engaged with the racks on the inner sides of the sliders on both sides, and the gear is fixedly connected to the output end of the motor.

[0016] The present invention provides a spring harness automatic processing device with a detection component, which has the following beneficial effects:

[0017] 1. During the use of the present invention, the spring wire body enters the inner cavity of the material barrel from the front opening of the material channel and abuts against the cover plate, so that the coils of the spring wire body are pressed against each other. In addition, since the spring wire body is restricted by the cavity of the material channel, the coils of the spring wire body are prevented from bowing during the pressing process, which facilitates the precise control of the cutting length of the spring wire body. During the cutting operation, the spring wire body will not slip when the coils are pressed against each other, effectively ensuring the cutting accuracy.

[0018] 2. During the use of the present invention, the spring wire body cut into small sections is retained in the inner cavity of the material dispensing barrel, and the ultrasonic detector on the outer wall of the material dispensing barrel is used to detect defects in the spring wire body inside. On the one hand, if the current spring wire body inspection result is normal, the material dispensing barrel at the top of the swing arm rotates counterclockwise by 90 degrees from the vertical state. At the end of the swing arm's counterclockwise rotation, the top pin at the front end of the workbench cooperates with the trigger rod to realize the opening and closing control of the cover plate. At this time, the spring wire body that has passed the inspection will have an open delivery port and fall into the inner cavity of the material dispensing barrel to complete the discharge. The opening and closing control of the above-mentioned cover plate does not require the participation of the electronic control component. When the material dispensing barrel is at the vertical top end, the cover plate remains closed under the elastic force of the torsion spring hinge, and can cooperate with the push rod to complete the mutual tightening of the spring wire body coils. When the material dispensing barrel is at the horizontal end, the position of the top pin is designed at the end of the swing arm's counterclockwise rotation. The abutment of the top pin on the trigger rod realizes the automatic opening of the cover plate to complete the gravity discharge of the spring wire body. The structural design is reasonable and has strong applicability.

[0019] 3. During the use of the present invention, on the other hand, if the current spring wire body inspection result is abnormal, and defects are found inside this section of the spring wire body and need to be discarded, the cylinder pushes the U-shaped frame to make the swing arm inside the side plate rotate clockwise. At this time, the material taking barrel tilts backward, and the abnormal spring wire body slides from the rear end feed port of the material taking barrel into the waste trough under the action of gravity. The present application meets the functional requirements of the spring wire body in the cutting process of tightening and limiting, fixed-length cutting, defect detection, identification and discharge, and automatic discharge at the same time through reasonable structural design. By controlling the offset direction of the swing arm, it cleverly completes the identification and discharge of defective products and the conveying and discharge of qualified products, and has stronger applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the overall perspective of the device of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the device of the present invention from a second perspective;

[0022] Figure 3 This is a schematic diagram of the structure of the pick-and-place assembly of the present invention;

[0023] Figure 4 This is a schematic structural diagram of a receiving component of the present invention;

[0024] Figure 5 This is a schematic diagram of the external structure of the feeding bin of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the feeding bin of the present invention;

[0026] Figure 7 It is a schematic diagram of the cutting assembly structure of the present invention.

[0027] Fig. 1, receiving assembly; 101, taking cylinder; 102, ultrasonic detector; 103, detection probe; 104, feeding port; 105, delivery port; 106, cover plate; 107, torsional spring hinge; 108, trigger rod; 2, taking and placing assembly; 201, air cylinder one; 202, U-shaped clamp; 203, sliding rod; 204, side plate; 205, swing arm; 206, sliding groove; 3, workbench; 4, ejector pin; 5, supporting leg; 6, feeding bin; 7, discharging opening; 8, material channel; 9, spring wire body; 10, air cylinder two; 11, push rod; 12, fixed plate; 13, waste trough; 14, cutting assembly; 1401, mounting plate; 1402, slot; 1403, sliding block; 1404, rack; 1405, connecting rod; 1406, cutting knife; 1407, gear; 1408, motor. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application

[0029] Please refer to Figures 1 to 4 The present application provides a technical solution: a spring wire bundle automatic processing equipment with a detection assembly, comprising a receiving assembly 1, the receiving assembly 1 comprising a taking cylinder 101, an ultrasonic detector 102, a detection probe 103, a feeding port 104, a delivery port 105, a cover plate 106, a torsional spring hinge 107 and a trigger rod 108, the ultrasonic detector 102 is fixed on the outer wall of the taking cylinder 101, and the input end detection probe 103 of the ultrasonic detector 102 extends to the inner cavity of the taking cylinder 101 through a cable, the taking cylinder 101 is provided with a feeding port 104 at one end, and the taking cylinder 101 is provided with a delivery port 105 at the other end, the delivery port 105 is covered with a cover plate 106, the cover plate 106 is rotatably connected with the opening side of the delivery port 105 through a torsional spring hinge 107, and the trigger rod 108 protruding from the side wall of the taking cylinder 101 is integrally fixed on the side surface of the cover plate 106, the taking cylinder 101 is fixed with the output end of a taking and placing assembly 2, the taking and placing assembly 2 comprising an air cylinder one 201, a U-shaped clamp 202 and a sliding rod 203, the U-shaped clamp 202 is fixedly connected with the output end of the air cylinder one 201, and the sliding rod 203 is connected with the end opening of the U-shaped clamp 202, the taking and placing assembly 2 further comprising side plates 204 and swing arms 205, the sliding rod 203 is slidingly installed in the guide groove at the bottom end of the two side plates 204, the swing arms 205 are rotatably installed inside the two side plates 204, and the top end plane of the swing arms 205 is bolted with the taking cylinder 101, the taking and placing assembly 2 further comprising a sliding groove 206, the protruding part on the bottom side surface of the swing arms 205 is provided with the sliding groove 206, and the sliding groove 206 is slidingly matched with the middle part of the sliding rod 203;

[0030] The specific operation is as follows: the spring wire body 9 cut into small sections is retained in the inner cavity of the material taking barrel 101, and the ultrasonic detector 102 on the outer wall of the material taking barrel 101 performs defect detection on the spring wire body 9 inside. On the one hand, if the current spring wire body 9 detection result is normal, the cylinder 1 201 is activated and the slide bar 203 at the front end of the U-shaped frame is pulled to slide in the guide groove at the bottom end of the side plate 204, and further the slide bar 203 is located in the slide groove 206 of the protruding part of the bottom side of the swing arm 205, so that the swing arm 205 is located at the side plates on both sides through the central rotation center. 204 rotates internally, and causes the material taking barrel 101 at the top of the swing arm 205 to rotate counterclockwise 90 degrees from the vertical state. At the end of the counterclockwise rotation of the swing arm 205, the top pin 4 at the front end of the workbench 3 cooperates with the trigger rod 108 to realize the opening and closing control of the cover plate 106. At this time, the qualified spring wire body 9 will have an open delivery port 105 falling into the inner cavity of the material taking barrel 101 to complete the discharge. The opening and closing control of the above-mentioned cover plate 106 does not require the participation of the electronic control component. When the material taking barrel 101 is at the vertical top end, the cover plate 106 is elastic under the torsion spring hinge 107. When the material taking barrel 101 is at the horizontal end, the position of the ejector pin 4 is designed at the end of the travel of the swing arm 205 rotating counterclockwise, and the cover plate 106 is automatically opened by the abutment of the ejector pin 4 against the trigger rod 108 to complete the gravity discharge of the spring wire body 9. The structural design is reasonable and has strong applicability. On the other hand, if the current spring wire body 9 test result is abnormal and a defect is found inside this section of the spring wire body 9 and needs to be discarded, the cylinder 1 201 pushes the U-shaped The frame makes the swing arm 205 inside the side plate 204 rotate clockwise. At this time, the material taking barrel 101 tilts backward. Under the action of gravity, the spring wire body 9 found to be abnormal slides from the rear end feeding port 104 of the material taking barrel 101 into the waste trough 13. The present application meets the functional requirements of the spring wire body 9 in the cutting process through reasonable structural design, the tight limit, fixed length cutting, defect detection, identification and discharge, and automatic discharge. By controlling the offset direction of the swing arm 205, the identification and discharge of defective products and the conveying and discharge of qualified products are cleverly completed, and the applicability is stronger.

[0031] See also Figures 5 to 7The roots of the side plates 204 on both sides are welded and fixed to the workbench 3, and a top pin 4 is fixed to the middle of the front end of the workbench 3, and the top pin 4 cooperates with the trigger rod 108 to realize the opening and closing control of the cover 106. Support legs 5 are fixed on both sides of the rear end of the workbench 3, and the ends of the support legs 5 on both sides away from the workbench 3 are fixed to both sides of the rear end of the feeding bin 6, and a discharge opening 7 is provided at the top of the rear end of the feeding bin 6. A material channel 8 is provided in the middle of the feeding bin 6 along the axial direction, and the top of the rear end of the material channel 8 is connected to the discharge opening 7. , a spring wire body 9 is placed inside the material channel 8, and the spring wire body 9 extends to the inside of the material taking barrel 101, the rear end of the feeding bin 6 is fixed with a cylinder 2 10 by bolts, and the output end of the cylinder 2 10 is fixedly connected with a push rod 11, and the push rod 11 slides in the material channel 8 to realize the step-by-step pushing of the spring wire body 9, the front bottom of the feeding bin 6 is fixed to the rear end of the side plate 204 through an "L"-shaped fixed plate 12, and the top of the fixed plate 12 is connected to a waste trough 13, and the waste trough 13 is located in front of the material channel 8. Below the end opening, cutting components 14 are provided at the upper and lower ends of the front end opening of the material channel 8. The cutting components 14 include a mounting plate 1401, a slot 1402, a slider 1403, a rack 1404, a connecting rod 1405, a cutting knife 1406, a gear 1407 and a motor 1408. The mounting plate 1401 is bolted to one side of the front end opening of the material channel 8, and slots 1402 are provided on both sides of the front end of the mounting plate 1401. Sliders 1403 are slidably installed inside the slots 1402 on both sides. Block 1403, and racks 1404 are fixed on the inner sides of the opposite surfaces of the sliders 1403 on both sides, connecting rods 1405 are bolted to the top of the sliders 1403 on both sides facing the material channel 8, and cutting knives 1406 are fixed on the upper and lower opposite surfaces of the connecting rods 1405 on both sides, and a gear 1407 is rotatably installed in the middle of the front end of the mounting plate 1401, and the outer edge teeth of the gear 1407 are engaged with the racks 1404 on the inner sides of the sliders 1403 on both sides, and the gear 1407 is fixedly connected to the output end of the motor 1408;

[0032] Specific operation as follows, spring wire body 9 from the feeding bin 6 rear end of the discharge opening 7 into the material channel 8, in the output end of cylinder two 10 push rod 11 push to achieve the step feeding of spring wire body 9, spring wire body 9 from the material channel 8 front end opening into the taking material cylinder 101 inner cavity and with the cover plate 106 abuts, so that the spring wire body 9 coil each other abuts, in addition, due to the spring wire body 9 by the cavity of material channel 8 limit, prevent the spring wire body 9 coil in the process of mutual abutment arching, facilitate the accurate control of the cutting length of spring wire body 9, cutting operation, start the motor 1408 and drive gear 1407 rotation, gear 1407 outer edge gear teeth further with both sides up and down staggered inside rack 1404 slide block 1403 meshing transmission, in turn drive both sides of the slider 1403 in the corresponding strip groove 1402 sliding closure, through both sides of the slider 1403 top link 1405 connection of cutting knife 1406 complete the cutting work of spring wire body 9, spring wire body 9 in the coil mutual abutment state will not slip when cutting, effectively guarantee the cutting precision.

[0033] It is worth mentioning that: using ultrasonic detector 102 for taking material cylinder 101 in the spring wire body 9 damage detection is already widely used mature technology, specifically is through the ultrasonic wave to the detected spring wire body 9, according to the reflection wave intensity, time and other parameters of the detected spring wire body 9 analysis, thus obtaining its internal defects, damage and other information, the ultrasonic detector 102 of the application preferred model is HZJF+9008.

[0034] In summary, when using the spring wire harness automatic processing equipment with a detection component, the spring wire body 9 is placed into the material channel 8 through the discharge opening 7 at the rear end of the feeding bin 6, and the spring wire body 9 is fed step by step under the push of the push rod 11 at the output end of the cylinder 2 10. The spring wire body 9 enters the inner cavity of the material taking barrel 101 from the front end opening of the material channel 8 and abuts against the cover plate 106, so that the coils of the spring wire body 9 are pressed against each other. In addition, since the spring wire body 9 is restricted by the cavity of the material channel 8, the coils of the spring wire body 9 are prevented from bowing during the process of pressing against each other, which facilitates the precise control of the cutting length of the spring wire body 9. During the cutting operation, the motor 1408 is enabled to drive the gear 1407 to rotate, and the outer edge teeth of the gear 1407 are further aligned with the sliders staggered up and down on both sides. The inner rack 1404 of 1403 is engaged for transmission, thereby driving the sliders 1403 on both sides to slide and close in the corresponding grooves 1402, and the cutting knife 1406 connected by the connecting rod 1405 at the top of the sliders 1403 on both sides completes the cutting operation of the spring wire body 9. The spring wire body 9 will not slip during cutting when the coils are pressed against each other, effectively ensuring the cutting accuracy. The spring wire body 9 cut into small sections is retained in the inner cavity of the material taking barrel 101, and the ultrasonic detector 102 on the outer wall of the material taking barrel 101 is used to detect defects in the spring wire body 9 inside. On the one hand, if the current spring wire body 9 detection result is normal, the cylinder 1 201 is activated and the slide bar 203 at the front end of the U-shaped frame is pulled to slide in the guide groove at the bottom end of the side plate 204, and the spring wire body 9 is cut into small sections. The sliding rod 203 slides in the sliding groove 206 of the protruding part on the bottom side of the swing arm 205, so that the swing arm 205 rotates through the middle rotation center located inside the side plates 204 on both sides, and the material collection barrel 101 at the top of the swing arm 205 rotates counterclockwise by 90 degrees from the vertical state. At the end of the counterclockwise rotation of the swing arm 205, the top pin 4 at the front end of the workbench 3 cooperates with the trigger rod 108 to realize the opening and closing control of the cover plate 106. At this time, the qualified spring wire body 9 will have an open delivery port 105 falling into the inner cavity of the material collection barrel 101 to complete the discharge. The opening and closing control of the above-mentioned cover plate 106 does not require the participation of the electronic control component. When the material collection barrel 101 is at the vertical top end, the cover plate 106 remains closed under the elastic force of the torsion spring hinge 107, which can cooperate with The push rod 11 completes the mutual tightening of the coils of the spring wire body 9, and when the material taking barrel 101 is at the horizontal end, the position of the ejector pin 4 is designed to be at the end of the travel of the swing arm 205 rotating counterclockwise, and the cover plate 106 is automatically opened by the abutment of the ejector pin 4 against the trigger rod 108 to complete the gravity discharge of the spring wire body 9. The structural design is reasonable and has strong applicability. On the other hand, if the current spring wire body 9 detection result is abnormal, and defects are found inside this section of the spring wire body 9 and need to be discarded, the cylinder 1 201 pushes the U-shaped frame to make the swing arm 205 inside the side plate 204 rotate clockwise. At this time, the material taking barrel 101 tilts backward, and the abnormal spring wire body 9 slides from the rear end feed port 104 of the material taking barrel 101 into the waste trough 13 under the action of gravity.This application, through a reasonable structural design, simultaneously meets the functional requirements of the spring wire body 9 during the cutting process, including tight positioning, fixed-length cutting, defect detection, identification and discharge, and automatic discharge. By controlling the offset direction of the swing arm 205, it cleverly completes the identification and discharge of defective products and the conveying and discharge of qualified products, making it more applicable.

[0035] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various implementations with various modifications as suited for specific applications.

Claims

1. A spring harness automatic processing device with a detection component, including a receiving component, characterized in that: The receiving assembly includes a material taking barrel, an ultrasonic detector, a detection probe, a feed port, a delivery port, a cover plate, a torsion spring hinge and a trigger rod. The ultrasonic detector is fixed to the outer wall of the material taking barrel, and the detection probe at the input end of the ultrasonic detector is extended to the inner cavity of the material taking barrel through a cable. A feed port is provided at one end of the material taking barrel, and a delivery port is provided at the other end of the material taking barrel. The opening of the delivery port is covered with a cover plate, and the cover plate is rotatably connected to the side surface of the delivery port opening through a torsion spring hinge, and a trigger rod protruding from the side wall of the material taking barrel is integrally fixed to the side surface of the cover plate. The material taking barrel is fixed to the output end of the pick-up and placement assembly, and the pick-up and placement assembly includes a cylinder, a U-shaped clamp and a sliding rod. The output end of the cylinder is fixedly connected to the U-shaped clamp, and the end opening of the U-shaped clamp is connected to the sliding rod. The pick-up and placement assembly also includes side panels and swing arms. The slide rods are slidably installed in the guide grooves at the bottom ends of the side panels on both sides, and the swing arms are rotatably installed inside the side panels on both sides, and the top plane of the swing arm is aligned with the guide grooves of the bottom ends of the side panels on both sides. The material discharging opening and closing of the cover plate is controlled by the pneumatic cylinder to move forward and backward, and the pneumatic cylinder is controlled to move forward and backward, and the pneumatic cylinder is controlled to move forward and backward, and the pneumatic cylinder is controlled to move forward and backward, and the pneumatic cylinder is controlled to move forward and backward, and the pneumatic cylinder is controlled to move 2. The spring harness automatic processing equipment with a detection component according to claim 1, characterized in that: Support legs are fixed on both sides of the rear end of the workbench, and one end of the support legs on both sides away from the workbench is fixed to both sides of the rear end of the feeding bin, and a discharge opening is opened at the top of the rear end of the feeding bin.

3. The spring harness automatic processing equipment with a detection component according to claim 2, characterized in that: A material channel is provided in the middle of the feeding bin along the axial direction, and the top of the rear end of the material channel is connected with the discharge opening. A spring wire body is placed inside the material channel, and the spring wire body extends to the inside of the material taking barrel.

4. The spring harness automatic processing equipment with a detection component according to claim 3, characterized in that: The rear end of the feeding bin is bolted with a second cylinder, and the output end of the second cylinder is fixedly connected with a push rod, and the push rod slides in the material channel to realize the step-by-step pushing of the spring wire body.

5. The spring harness automatic processing equipment with a detection component according to claim 4, characterized in that: Cutting components are provided at the upper and lower ends of the front end opening of the material channel, and the cutting components include a mounting plate, a groove, a slider, a rack, a connecting rod, a cutting knife, a gear and a motor. The mounting plate is bolted to one side of the front end opening of the material channel, and grooves are provided on both sides of the front end of the mounting plate. Sliders staggered up and down are slidably installed inside the grooves on both sides, and racks are fixed on the inner sides of the opposite surfaces of the sliders on both sides. Connecting rods are bolted to the top ends of the sliders on both sides toward the direction of the material channel, and cutting knives are fixed on the upper and lower opposite surfaces of the connecting rods on both sides. A gear is rotatably installed on the middle part of the front end of the mounting plate, and the teeth on the outer edge of the gear are meshed with the racks on the inner sides of the sliders on both sides, and the gear is fixedly connected to the output end of the motor.

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