Fixed-length cutting device for rubber sealing strip

Abstract

The utility model discloses a fixed-length cutting device for a rubber sealing strip, and belongs to the technical field of sealing rubber strip production equipment. Comprising an input structure, a cutting structure and an output structure, and the input structure comprises a limiting mechanism, a double-roller conveying mechanism, a buffering mechanism, a tension traction mechanism and a front clamping conveying mechanism which are sequentially arranged from front to back; the front clamping and conveying mechanism is located on the left side or the right side of the rubber sealing strip and located in front of the cutting structure, and parallel clamping jaws are arranged on the front clamping and conveying mechanism. The parallel clamping jaw can move forwards and backwards and can move backwards to the adjacent front of the cutting structure; the output structure comprises a collecting platform arranged in the front-back direction and a rear clamping and conveying mechanism arranged on the collecting platform. The rear clamping and conveying mechanism is arranged in the front-back direction and located on the left side or the right side of the rubber sealing strip, and a 180-degree opening and closing clamping jaw is arranged on the rear clamping and conveying mechanism. The 180-degree opening and closing clamping jaw can move forwards and backwards, is located right behind the cutting structure, can move forwards to the adjacent rear portion of the cutting structure and can move backwards to a preset position.

Description

Technical Field

[0001] This utility model belongs to the technical field of sealing strip production equipment, and specifically relates to a fixed-length cutting device for rubber sealing strips. Background Technology

[0002] Automotive weatherstripping is an important component of automobiles. It fills the gaps between body parts and has functions such as shock absorption, waterproofing, dustproofing, sound insulation, and decoration. High-quality automotive weatherstripping can improve the comfort of the driving experience and protect the vehicle body.

[0003] The production process of automotive sealing strips includes extrusion, grinding, adhesive backing, and cutting. Cutting is used to cut the automotive sealing strips to a predetermined length.

[0004] For example, patent application number CN202021935653.6 discloses an automatic rubber sealing strip cutting machine, including a base plate. A discharge conveyor, a cutting device, a feeding conveyor, and a length measuring device are arranged sequentially along a straight line on the base plate. The discharge conveyor and the feeding conveyor have the same structure, each including a frame, an active conveyor belt device, and a passive conveyor belt device. The active conveyor belt device includes a first set of pulleys fixed to the frame, consisting of two front and rear pulleys, an active conveyor belt fitted on the first set of pulleys, and a motor mounted on the frame to drive the front pulley in the first set of pulleys. The passive conveyor belt device is arranged parallel above the active conveyor belt device, and includes a second set of pulleys consisting of two front and rear pulleys, a passive conveyor belt fitted on the second set of pulleys, and a [missing information - likely a device name or structure]. The machine includes a connecting plate for the pulley shaft of the wheel, a support plate on the top of the frame, a first electric cylinder vertically arranged on the support plate, and a U-shaped plate connecting the telescopic rod of the first electric cylinder to the connecting plate; the frame is provided with a guide groove that slides vertically with the pulley shaft of the second set of pulleys; the cutting device includes a cutting table, a gantry frame fixed on the cutting table, and a second electric cylinder arranged on the gantry frame, the telescopic rod of the second electric cylinder is vertically downward, and a knife holder is connected to the end of the telescopic rod of the second electric cylinder, and a cutting knife is arranged on the knife holder; the upper side of the active conveyor belt of the discharge conveyor and the feeding conveyor is on the same plane as the top surface of the cutting table; the length measuring device includes a support plate, an encoder arranged on the support plate, a synchronous wheel arranged on the rotating shaft of the encoder, and rubber sealing strip guide wheels arranged on both sides of the encoder.

[0005] For example, patent application number CN202120937530.4 discloses an online cutting device for rubber sealing strips, including a frame, a limiting unit mounted on the frame, a tensioning unit mounted after the limiting unit, a fixed-length cutting unit mounted after the tensioning unit, and a belt conveyor mounted after the fixed-length cutting unit for conveying rubber sealing strips; the limiting unit includes a limiting mold with limiting holes matching the cross-sectional shape of the rubber sealing strip; the tensioning unit includes a first bracket, a lower roller shaft mounted on the first bracket, a first movable frame above the lower roller shaft, an upper roller shaft mounted on the first movable frame and parallel to the lower roller shaft, a first guide groove mounted on the first bracket and slidingly engaging with the end of the upper roller shaft, a first adjusting screw vertically passing through the top of the first bracket and fixed at its lower end to the first movable frame, a first spring sleeved on the first adjusting screw, and a first nut mounted on the upper end of the first adjusting screw, the lower end of the first spring pressing against the first movable frame, and the upper end of the first spring abutting against the first bracket; the fixed-length cutting unit... The unit includes a second bracket, an active roller mounted on the second bracket, a stepper motor mounted on one side of the second bracket to drive the active roller to rotate, an encoder mounted on the second bracket and connected to the active roller, a second movable frame located above the active roller, a driven roller mounted on the second movable frame and parallel to the active roller, a second guide groove mounted on the second bracket and slidingly engaging with the end of the driven roller, a second adjusting screw vertically passing through the top of the second bracket and fixed at its lower end to the second movable frame, a second spring sleeved on the second adjusting screw, and a second nut located at the upper end of the second adjusting screw. The lower end of the second spring presses against the second movable frame, and the upper end of the second spring abuts against the second bracket. The fixed-length cutting unit also includes a shearing pad mounted on the second bracket and located on the discharge side of the active roller, a cutter guide block mounted on the second bracket and located above the shearing pad, a cutter mounted in the cutter guide block, a cylinder mounted on the top of the second bracket for driving the cutter to move up and down, and a PLC controller for controlling the stepper motor and the cylinder. The encoder is connected to the PLC controller.

[0006] Unlike common strip products, rubber sealing strips are elastic and can stretch. If the rubber sealing strip is stretched during input and output, it will lead to inaccurate cutting length. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides a fixed-length cutting device for rubber sealing strips. The rubber sealing strip is not stretched during input and output, ensuring cutting accuracy. The technical solution is as follows:

[0008] This utility model embodiment provides a fixed-length cutting device for rubber sealing strips. The device includes an input structure, a cutting structure 6, and an output structure arranged sequentially from front to back. The input structure includes a limiting mechanism, a roller conveying mechanism 2, a buffer mechanism 3, a tension traction mechanism 4, and a front clamping conveying mechanism 5 arranged sequentially from front to back. The rubber sealing strip 1 hangs downward at the buffer mechanism 3. The buffer mechanism 3 is located below and behind the roller conveying mechanism 2 and can detect the degree of drooping of the rubber sealing strip 1. The front clamping conveying mechanism 5 is located on the left or right side of the rubber sealing strip 1 and in front of the cutting structure 6. It is provided with parallel grippers 52. The parallel grippers 52 can move back and forth and can move backward to the adjacent front of the cutting structure 6, where they can clamp the upper and lower sides of the rubber sealing strip 1. The output structure includes a... A collection platform 7 is arranged in a front-to-back direction, and a rear clamping and conveying mechanism 8 is mounted on it. The rear clamping and conveying mechanism 8 is arranged in a front-to-back direction and is located on the left or right side of the rubber sealing strip 1. It is equipped with a 180° opening and closing gripper 82. The 180° opening and closing gripper 82 can move back and forth. It is located directly behind the cutting structure 6. It can move forward to the adjacent rear of the cutting structure 6 and move backward to a predetermined position. It can clamp the upper and lower sides of the rear end of the rubber sealing strip 1. When the parallel gripper 52 clamps the cut rubber sealing strip 1 and moves backward to the adjacent front of the cutting structure 6, the rear end of the rubber sealing strip 1 passes backward through the cutting structure 6 and moves to the 180° opening and closing gripper 82. When the 180° opening and closing gripper 82 clamps the rear end of the rubber sealing strip 1 and moves backward to the predetermined position, the cutting structure 6 is activated.

[0009] In this embodiment of the present invention, the buffer mechanism 3 includes two columns and two photoelectric sensors. The two columns are arranged side by side, located on the left and right sides of the rubber sealing strip 1, respectively. They are both vertically arranged and located below and behind the roller conveying mechanism 2. The two photoelectric sensors are respectively located at the upper and lower parts of the same column and are electrically connected to the roller conveying mechanism 2. The tension traction mechanism 4 is located directly behind the roller conveying mechanism 2, and the upper photoelectric sensor is lower than the roller conveying mechanism 2. The rubber sealing strip 1 at the buffer mechanism 3 is always in a hanging state.

[0010] In this embodiment of the present invention, the tension traction mechanism 4 includes a traction plate and N traction wheels, where N is an odd number greater than or equal to 3. The traction plate is located above and behind the buffer mechanism 3, directly in front of the front traction wheel, and is arranged diagonally downward from front to back. It has a through hole for the rubber sealing strip 1 to pass through. The N traction wheels are arranged side by side and are located directly in front of the parallel gripper 52. The rubber sealing strip 1 passes through the through hole, enters from the upper side of the front traction wheel, passes around the N traction wheels in an S-shape, and exits from the upper side of the rear traction wheel.

[0011] Preferably, in this embodiment of the invention, the rear traction wheel is fixedly installed, while all other traction wheels except the rear traction wheel can be adjusted up and down.

[0012] In this embodiment of the present invention, the front clamping and conveying mechanism 5 includes a slide cylinder 51 arranged in the front-back direction, a parallel gripper 52 arranged in the left-right direction, and two clamping blocks 53 arranged side by side. The slide cylinder 51 is located on the left or right side of the rubber sealing strip 1. The parallel gripper 52 is a parallel pneumatic finger, which is located on the rear side of the slide at the rear end of the slide cylinder 51. The two clamping blocks 53 are respectively located on the two fingers of the parallel gripper 52, which are located directly above and directly below the rubber sealing strip 1. The clamping blocks 53 are arranged in the front-back direction, and their front parts are fixedly connected to the fingers of the parallel gripper 52.

[0013] Specifically, in this embodiment of the present invention, the two clamping blocks 53 are an upper clamping block 31 and a lower clamping block 32. The upper clamping block 31 and the lower clamping block 32 are located directly above and directly below the rubber sealing strip 1, respectively, and are both rectangular blocks arranged in the front-back direction. The upper front side of the upper clamping block 31 and the lower front side of the lower clamping block 32 are provided with fixing grooves for cooperating with fingers in the left-right direction. The upper rear side of the lower clamping block 32 is provided with two side plates arranged side by side. The two side plates are flush with the left and right sides of the lower clamping block 32, respectively, and are located behind the fixing grooves. They are located on the adjacent outer sides of the left and right sides of the upper clamping block 31, respectively, and are arranged in the front-back direction. The fixing grooves are fixedly connected to the corresponding fingers.

[0014] In this embodiment of the present invention, the cutting structure 6 includes a gantry bracket arranged in the left-right direction, a cutter that can move up and down, a cutting cylinder on the top beam of the gantry bracket for driving the cutter to move up and down, and a cutting support block at the bottom of the gantry bracket and directly below the cutter. The cutter is arranged in the left-right direction. The cutting support block has a through hole along the front-back direction for the rubber sealing strip 1 to pass through, and a strip slit on its upper side that cooperates with the cutter. The strip slit is arranged in the left-right direction, located directly below the cutter, and its lower side is flush with the lower side of the through hole.

[0015] In this embodiment of the present invention, the rear clamping and conveying mechanism 8 includes a moving platform 81 arranged in the front-to-back direction and a 180° opening and closing gripper 82 on its slide; the moving platform 81 is a screw moving platform or a synchronous belt moving platform; the 180° opening and closing gripper 9 is arranged in the front-to-back direction and is a 180° opening and closing pneumatic finger with two vertical fingers on its front side.

[0016] In this embodiment of the present invention, the collection platform 7 includes a base plate 71, a fixing plate 72 on the right side of the base plate 71, a sliding plate 73 between the lower ends of the base plate 71 and the fixing plate 72, and a baffle 74 directly above the base plate 71. The base plate 71 is horizontally arranged in the front-to-back direction and is located below the moving platform 81. The baffle 74 and the fixing plate 72 are both vertically arranged in the front-to-back direction and are located on the left and right sides of the rubber sealing strip 1, respectively. The moving platform 81 is mounted on the fixing plate 72. The sliding plate 73 is located directly below the rubber sealing strip 1 and is arranged diagonally downward from right to left with a smooth surface. The baffle 74 is located above the right side of the base plate 71 and has a gap between it and the base plate 71.

[0017] Preferably, in this embodiment of the present invention, the baffle 74 includes a frame arranged in the front-to-back direction and an upward-opening door hinged to the frame, the frame being fixed to the base plate 71; the upper end of the upward-opening door is hinged to the frame by a hinge, it is arranged in the front-to-back direction, it is a transparent structure, and it is located directly above the base plate 71; the fixed plate 72 and above the moving platform 81 are provided with a drag chain groove 83 for supporting the air pipe of the 180° opening and closing gripper 82, the drag chain groove 83 being arranged in the front-to-back direction.

[0018] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This utility model embodiment provides a fixed-length cutting device for rubber sealing strips. Neither the input (avoiding stretching through a buffer mechanism and a tension traction mechanism) nor the output (avoiding stretching and adjusting the tension through a tension traction mechanism) involves stretching of the rubber sealing strip, ensuring cutting accuracy. The front clamping and conveying mechanism also prevents the rubber sealing strip from springing back after cutting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the fixed-length cutting device for the rubber sealing strip in this embodiment of the utility model;

[0020] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0021] Figure 3 This is a schematic diagram of the output structure.

[0022] In the diagram: 1. Rubber sealing strip; 2. Roller conveyor mechanism; 3. Buffer mechanism; 4. Tension traction mechanism; 5. Front clamping conveyor mechanism; 6. Cutting structure; 7. Collection platform; 8. Rear clamping conveyor mechanism.

[0023] 31 Upper clamping block, 32 Lower clamping block;

[0024] 51 Slide table cylinder, 52 Parallel gripper, 53 Clamping block;

[0025] 71 Base plate, 72 Fixed plate, 73 Slide plate, 74 Baffle plate;

[0026] 81. Mobile platform, 82. 180° opening and closing gripper, 83. Cable drag chain groove. Detailed Implementation

[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] See Figure 1-3 Example 1 provides a fixed-length cutting device for rubber sealing strips. The device includes an input structure, a cutting structure 6, and an output structure arranged sequentially from front to back. The input structure includes a limiting mechanism, a roller conveying mechanism 2, a buffer mechanism 3, a tension traction mechanism 4, and a front clamping conveying mechanism 5 arranged sequentially from front to back. The output structure includes a collection platform 7 arranged in the front-back direction and a rear clamping conveying mechanism 8 on it.

[0030] The limiting mechanism includes two vertical limiting rollers and two horizontal limiting rollers. The two vertical limiting rollers are located on the left and right sides of the rubber sealing strip 1, respectively, and are both vertically oriented. The two horizontal limiting rollers are located on the upper and lower sides of the rubber sealing strip 1, respectively, and are both oriented horizontally. Specifically, the vertical limiting rollers are located in front of the horizontal limiting rollers.

[0031] The roller conveying mechanism 2 includes a drive roller and a pressure roller; the pressure roller and the drive roller are located on the upper and lower sides of the rubber sealing strip 1, respectively, and are both arranged in the left-right direction. The pressure roller can be adjusted up and down; the drive motor of the drive roller is electrically connected to the photoelectric sensor of the buffer mechanism 3.

[0032] The rubber sealing strip 1 always hangs downwards (forming an arc) at the buffer mechanism 3 to ensure that the rubber sealing strip 1 will not be tightened when the rear clamping conveyor 8 is pulled back to the predetermined position (it will become shorter after cutting when tightened). The buffer mechanism 3 is located below and behind the roller conveyor 2 and can detect (specifically through at least two photoelectric sensors) the degree of drooping of the rubber sealing strip 1.

[0033] Specifically, the buffer mechanism 3 includes two columns and two photoelectric sensors (arranged horizontally, facing the lowest point of the drop). The two columns are arranged side by side, located on the left and right sides of the rubber sealing strip 1, respectively, and are both vertically positioned below and behind the roller conveyor mechanism 2. The two photoelectric sensors are respectively located at the upper and lower parts of the same column (the left column or the right column), and are electrically connected to the roller conveyor mechanism 2 to control its operation. The tension traction mechanism 4 is located directly behind the roller conveyor mechanism 2, with the upper photoelectric sensor lower than the roller conveyor mechanism 2. When the lowest point of the rubber sealing strip 1 is at the lower photoelectric sensor, the roller conveyor mechanism 2 stops operating, and the front clamping conveyor mechanism 5 and the rear clamping conveyor mechanism 8 operate sequentially. When the lowest point of the rubber sealing strip 1 is at the higher photoelectric sensor, the roller conveyor mechanism 2 starts operating.

[0034] The tension traction mechanism 4 includes a traction plate and N traction wheels, where N is an odd number greater than or equal to 3. The traction plate is located above and behind the buffer mechanism 3, directly in front of the front traction wheel. It is angled downwards from front to back (inclination angle 20-40°) and is specifically a rectangular plate with a through hole (specifically a large circular hole) for the rubber sealing strip 1 to pass through. The N traction wheels are arranged side-by-side, directly in front of the parallel gripper 52. The rubber sealing strip 1 passes through the through hole, enters from the top of the front traction wheel, wraps around the N traction wheels in an S-shape, and exits from the top of the rear traction wheel.

[0035] The front clamping and conveying mechanism 5 is located on the left or right side of the rubber sealing strip 1, in front of the cutting structure 6, and is equipped with parallel grippers 52. The parallel grippers 52 can move back and forth (the movement distance is 3-6cm), and can move backward to the adjacent front of the cutting structure 6. They can clamp the upper and lower sides of the rubber sealing strip 1, and can pull the rubber sealing strip 1 backward.

[0036] The cutting structure 6 includes a gantry frame, a cutter, a cutting cylinder, and a cutting support block. The gantry frame is arranged horizontally. The cutting cylinder is vertically positioned in the middle of the top beam of the gantry frame and drives the cutter to move up and down. The cutter is horizontally positioned directly below the top beam, above the cutting support block, and at the lower end of the telescopic rod of the cutting cylinder. The cutting support block is located at the bottom of the gantry frame, directly below the cutter. It has a through hole (specifically a rectangular hole horizontally positioned) along its upper edge for the rubber sealing strip 1 to pass through, and a slot on its upper side to mate with the cutter. The slot is horizontally positioned directly below the cutter, and its lower side is flush with the lower side of the through hole. During cutting, the cutting cylinder extends, and the cutter is positioned within the slot, its top resting against the lower side of the through hole.

[0037] The rear clamping and conveying mechanism 8 is arranged in the front-to-back direction, located on the left or right side of the rubber sealing strip 1, and is equipped with a 180° opening and closing gripper 82. The 180° opening and closing gripper 82 can move back and forth, located directly behind the cutting structure 6, and can move forward to the adjacent rear of the cutting structure 6, and can move backward to a predetermined position (the distance between the predetermined position and the cutting structure 6 is the cutting length). It can clamp the upper and lower sides of the rear end of the rubber sealing strip 1, and can pull the rubber sealing strip 1 backward. When the parallel gripper 52 clamps the cut rubber sealing strip 1 and moves backward to the adjacent front of the cutting structure 6, the rear end of the rubber sealing strip 1 passes backward through the cutting structure 6 (specifically, the through hole) and moves to the 180° opening and closing gripper 82. When the 180° opening and closing gripper 82 clamps the rear end of the rubber sealing strip 1 and moves backward to the predetermined position, the cutting structure 6 is activated.

[0038] The working process of this device is as follows: The roller conveyor mechanism 2 conveys the rubber sealing strip 1 backward. When the rubber sealing strip 1 falls to the low position of the photoelectric sensor, the roller conveyor mechanism 2 stops. At this time, the parallel gripper 52 clamps the rear part of the rubber sealing strip 1. The parallel gripper 52 moves backward to the adjacent front of the cutting structure 6, and the rear end of the rubber sealing strip 1 passes backward through the cutting structure 6 and moves to the 180° opening and closing gripper 82. The 180° opening and closing gripper 82 clamps the rear end of the rubber sealing strip 1, the parallel gripper 52 releases the rubber sealing strip 1, and the 180° opening and closing gripper 82 moves backward to the predetermined position. The parallel gripper 52 releases the rubber sealing strip 1, the blade of the cutting structure 6 moves downward to cut it, the 80° opening and closing gripper 82 releases, and the rubber sealing strip 1 falls to the collection platform 7.

[0039] Example 2

[0040] See Figure 1-2 Example 2 provides a fixed-length cutting device for rubber sealing strips, whose structure is basically the same as that of Example 1, except that the front clamping and conveying mechanism 5 in this embodiment includes a slide cylinder 51, parallel grippers 52, and two clamping blocks 53. The slide cylinder 51 is arranged in the front-back direction and is located on the left or right side of the rubber sealing strip 1. The parallel grippers 52 are arranged in the left-right direction and are parallel pneumatic fingers located on the rear side of the slide at the rear end of the slide cylinder 51, with two fingers arranged side by side near the rubber sealing strip 1 (left or right side). The two clamping blocks 53 are arranged side by side, located on the two fingers of the parallel grippers 52, respectively, directly above and below the rubber sealing strip 1. The clamping blocks 53 are arranged in the front-back direction, with their front parts fixedly connected to the fingers of the parallel grippers 52.

[0041] Specifically, in this embodiment of the invention, the two clamping blocks 53 are an upper clamping block 31 and a lower clamping block 32. The upper clamping block 31 and the lower clamping block 32 are located directly above and below the rubber sealing strip 1, respectively, and are both rectangular blocks arranged in the front-to-back direction. The upper front side of the upper clamping block 31 and the lower front side of the lower clamping block 32 are both provided with fixing grooves (specifically rectangular grooves) in the left-to-right direction to engage with fingers, and the fixing grooves are fixedly connected to the corresponding fingers. Two side plates are arranged side-by-side on the upper rear side of the lower clamping block 32. The two side plates are flush with the left and right sides of the lower clamping block 32, located behind the fixing grooves, and are located on the adjacent outer sides of the left and right sides of the upper clamping block 31, respectively. They are both arranged in the front-to-back direction and are specifically rectangular plates. The rubber sealing strip 1 passes between the two side plates.

[0042] Example 3

[0043] See Figure 1 and 3 Example 3 provides a fixed-length cutting device for rubber sealing strips, which has the same structure as that of Example 1. The difference is that the rear clamping and conveying mechanism 8 in this example includes a moving platform 81 arranged in the front-back direction and a 180° opening and closing gripper 82 on its slide.

[0044] The collection platform 7 includes a base plate 71, a fixed plate 72, a sliding plate 73, and a baffle 74. The base plate 71 is horizontally arranged in the front-to-back direction and is located below the moving platform 81. The fixed plate 72 is located on the right side of the base plate 71, and the baffle 74 is located above the right side of the base plate 71 with a gap between it and the base plate 71. Both the baffle 74 and the fixed plate 72 are vertically arranged in the front-to-back direction and are located on the left and right sides of the rubber sealing strip 1, respectively. The moving platform 81 is mounted on the fixed plate 72. The sliding plate 73 is located directly below the rubber sealing strip 1, and is arranged diagonally downward from right to left with a smooth surface. The cut rubber sealing strip 1 rolls onto the base plate 71.

[0045] Among them, the moving platform 81 is a screw moving platform or a synchronous belt moving platform, etc., and is equipped with a slide that can move in the front and back direction. The 180° opening and closing gripper 9 is arranged in the front and back direction. It is a 180° opening and closing pneumatic finger, and has two vertical fingers on its front side (arranged in the front and back direction when clamping).

[0046] Example 4

[0047] See Figure 1 and 3Example 4 provides a fixed-length cutting device for rubber sealing strips, whose structure is basically the same as that of Example 3, except that: in this example, the baffle 74 includes a frame arranged in the front-to-back direction and a lift-up door hinged to the frame. The frame is fixed to the base plate 71 and is specifically a rectangular frame. The upper end of the lift-up door is hinged to the frame, arranged in the front-to-back direction, and is a transparent structure (specifically glass). It is located directly above the base plate 71 and is specifically rectangular. A drag chain groove 83 (specifically a rectangular groove) for supporting the air pipe of the 180° opening and closing gripper 82 is provided on the fixed plate 72 and above the moving platform 81. The drag chain groove 83 is arranged in the front-to-back direction.

[0048] Example 5

[0049] See Figure 1 Example 5 provides a fixed-length cutting device for rubber sealing strips, whose structure is basically the same as that of Example 1, except that the rear traction wheel is fixed in this example, while the other traction wheels can be adjusted up and down. Specifically, a vertical plate is provided on the right side of the rubber sealing strip 1 along the front-back direction. The traction plate is fixed at the front end of the vertical plate, and the rear traction wheel is located at the rear end of the vertical plate. The vertical plate is provided with N-1 slide rails, which are vertically arranged. The N-1 traction wheels are slidably mounted on the N-1 slide rails via N-1 sliding blocks. The sliding blocks and the top of the vertical plate are provided with handwheel adjustment mechanisms along the vertical direction.

[0050] Example 6

[0051] See Figure 1 Example 6 provides a fixed-length cutting device for rubber sealing strips, the structure of which is basically the same as that of Example 1, except that the front clamping conveying mechanism 5 and the rear clamping conveying mechanism 8 in this example are both located on the right side of the rubber sealing strip 1.

[0052] Example 7

[0053] See Figure 1 Example 7 provides a fixed-length cutting device for rubber sealing strips, the structure of which is basically the same as that of Example 1, except that N in this example is 5.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A length cutting device of rubber sealing strip, comprising input structure, cutting structure (6) and output structure arranged in sequence from front to back, the input structure comprising limiting mechanism and counter roller conveying mechanism (2) arranged in sequence from front to back; characterized in that, the input structure further comprises buffer mechanism (3), tension traction mechanism (4) and front clamping conveying mechanism (5) arranged in sequence from front to back; the rubber sealing strip (1) is hanging downward at the buffer mechanism (3); the buffer mechanism (3) is located below the rear of the counter roller conveying mechanism (2) and can detect the hanging degree of the rubber sealing strip (1); the front clamping conveying mechanism (5) is located on the left side or right side of the rubber sealing strip (1) and is located in front of the cutting structure (6) and is provided with parallel clamping jaws (52); the parallel clamping jaws (52) can move forward and backward and can move backward to the adjacent front of the cutting structure (6) and can clamp the upper and lower sides of the rubber sealing strip (1); the output structure comprises a collection platform (7) arranged in front and back and a rear clamping conveying mechanism (8) thereon; the rear clamping conveying mechanism (8) is arranged in front and back and is located on the left side or right side of the rubber sealing strip (1) and is provided with 180° opening and closing clamping jaws (82); the 180° opening and closing clamping jaws (82) can move forward and backward and are located directly behind the cutting structure (6) and can move forward to the adjacent rear of the cutting structure (6) and can move backward to a predetermined position and can clamp the upper and lower sides of the rear end of the rubber sealing strip (1); when the parallel clamping jaws (52) clamp the cut rubber sealing strip (1) and move backward to the adjacent front of the cutting structure (6), the rear end of the rubber sealing strip (1) passes through the cutting structure (6) and moves to the 180° opening and closing clamping jaws (82); when the 180° opening and closing clamping jaws (82) clamp the rear end of the rubber sealing strip (1) and move backward to the predetermined position, the cutting structure (6) acts.

2. The apparatus according to claim 1, wherein the buffer mechanism (3) comprises two vertical columns and two photoelectric sensors; the two vertical columns are arranged side by side and are located on the left and right sides of the rubber sealing strip (1) and are vertically arranged and are located below the rear of the counter roller conveying mechanism (2); the two photoelectric sensors are arranged on the upper and lower parts of the same vertical column and are electrically connected with the counter roller conveying mechanism (2); the tension traction mechanism (4) is located directly behind the counter roller conveying mechanism (2), the upper photoelectric sensor is lower than the counter roller conveying mechanism (2), and the rubber sealing strip (1) at the buffer mechanism (3) is always in a hanging state.

3. The apparatus according to claim 1, wherein the tension traction mechanism (4) comprises a traction plate and N traction wheels, N being an odd number greater than or equal to 3; the traction plate is located above the rear of the buffer mechanism (3) and is located directly in front of the front traction wheel and is arranged obliquely downward from front to back and is provided with a through hole for the rubber sealing strip (1) to pass through; the N traction wheels are arranged side by side from front to back and are located directly in front of the parallel clamping jaws (52); the rubber sealing strip (1) passes through the through hole, enters from the upper side of the front traction wheel, and winds around the N traction wheels in an S shape in sequence, and comes out from the upper side of the rear traction wheel.

4. The apparatus according to claim 3, wherein The rear end of the traction wheel is fixedly arranged, and the other traction wheels can be adjusted up and down.

5. The apparatus for cutting a rubber sealant strip according to claim 1, wherein The front clamping conveying mechanism (5) comprises a slide table cylinder (51) arranged in the front-rear direction, a parallel clamp jaw (52) arranged in the left-right direction, and two clamping blocks (53) arranged side by side in the up-down direction. The slide table cylinder (51) is arranged on the left side or the right side of the rubber sealing strip (1); the parallel clamp jaw (52) is a parallel pneumatic finger arranged on the rear side of the slide table at the rear end of the slide table cylinder (51); the two clamping blocks (53) are respectively arranged above and below the rubber sealing strip (1); and the clamping blocks (53) are arranged in the front-rear direction, and the front part of the clamping blocks (53) is fixedly connected with the fingers of the parallel clamp jaw (52).

6. The apparatus according to claim 5, wherein The two clamping blocks (53) are an upper clamping block (31) and a lower clamping block (32); the upper clamping block (31) and the lower clamping block (32) are respectively arranged above and below the rubber sealing strip (1), and are both rectangular blocks arranged in the front-rear direction; the upper side of the front part of the upper clamping block (31) and the lower side of the front part of the lower clamping block (32) are both provided with a fixed groove matched with the fingers in the left-right direction; two side plates are arranged side by side in the left-right direction on the upper side of the rear part of the lower clamping block (32); the two side plates are flush with the left and right sides of the lower clamping block (32), are located behind the fixed groove, are respectively located on the adjacent outer sides of the left and right sides of the upper clamping block (31), and are both arranged in the front-rear direction; and the fixed groove is fixedly connected with the corresponding fingers.

7. The apparatus according to claim 1, wherein The cutting structure (6) comprises a door-type support arranged in the left-right direction, a cutting knife capable of moving up and down, a cutting cylinder for driving the cutting knife to move up and down on the top beam of the door-type support, and a cutting support block located below the cutting knife at the bottom of the door-type support; the cutting knife is arranged in the left-right direction; the cutting support block is provided with a through hole for the rubber sealing strip (1) to pass through in the front-rear direction, and is provided with a slot matched with the cutting knife on the upper side; the slot is arranged in the left-right direction and located below the cutting knife, and the lower side is flush with the lower side of the through hole.

8. The apparatus for cutting a rubber sealing strip according to claim 1, wherein The rear clamping conveying mechanism (8) comprises a moving platform (81) arranged in the front-rear direction and a 180° opening and closing clamp jaw (82) on the slide of the moving platform (81); the moving platform (81) is a lead screw moving platform or a synchronous belt moving platform; the 180° opening and closing clamp jaw (82) is arranged in the front-rear direction and is a 180° opening and closing pneumatic finger, and the front side is provided with two vertical fingers.

9. The apparatus according to claim 8, wherein The collecting platform (7) comprises a bottom plate (71), a fixed plate (72) on the right side of the bottom plate (71), a sliding plate (73) between the bottom plate (71) and the lower end of the fixed plate (72), and a baffle (74) directly above the bottom plate (71), the bottom plate (71) is horizontally arranged along the front and back directions and is located below the moving platform (81); the baffle (74) and the fixed plate (72) are both vertically arranged along the front and back directions and are respectively located on the left and right sides of the rubber sealing strip (1); the moving platform (81) is arranged on the fixed plate (72); the sliding plate (73) is located directly below the rubber sealing strip (1) and is obliquely arranged from right to left and downward, and the surface of the sliding plate (73) is smooth; the baffle (74) is located above the right part of the bottom plate (71) and has a gap with the bottom plate (71).

10. The apparatus according to claim 9, wherein The baffle (74) comprises a frame arranged along the front and back directions and a turnover door hinged to the frame, the frame is fixed on the bottom plate (71); the upper end of the turnover door is hinged to the frame through a hinge, the turnover door is arranged along the front and back directions, the turnover door is a transparent structure and is located directly above the bottom plate (71); a drag chain groove (83) for supporting the air pipe of the 180° opening and closing clamping jaw (82) is arranged on the fixed plate (72) and above the moving platform (81), the drag chain groove (83) is arranged along the front and back directions.

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