Rubber strip cutting machine

Abstract

The application relates to the technical field of rubber strip cutting machines, and discloses a rubber strip cutting machine which comprises a cutting mechanism, a traction mechanism and a conveying mechanism, the conveying mechanism comprises a front-end conveying part and a rear-end conveying part, and the rear-end conveying part is close to the cutting mechanism; the front-end conveying part comprises a driving roller, a driven roller and a driving source for driving the driving roller to rotate, a space for the rubber strip to enter is left between the driving roller and the driven roller, the rear-end conveying part comprises a plurality of tensioning rollers which are arranged at intervals; the conveying mechanism further comprises a vertical rod and a sensor which is installed on the vertical rod, the sensor is arranged at intervals along the vertical direction of the vertical rod, the vertical rod is located between the front-end conveying part and the rear-end conveying part, the sensor is connected with the driving source, different sensors drive the driving source to output different rotating speeds; and the rubber strip cutting machine further comprises a transition box which is close to one side of the front-end conveying part and away from the vertical rod. The application can reduce the phenomenon that the rubber strip has wrinkles, and further improve the length error range of the cut rubber strip.

Description

Technical Field

[0001] The present application relates to the technical field of precision cutting machines, and in particular to a precision cutting machine for rubber strips. Background Art

[0002] During the production process, rubber sealing strips must go through a cutting process to cut long rubber strips into short rubber strips. In order to improve cutting efficiency, a rubber strip precision cutting machine is generally used for cutting.

[0003] The rubber strip cutting machine includes a conveying mechanism for conveying rubber strips, a traction mechanism for pulling the rubber strips, and a cutting mechanism for cutting the rubber strips; the conveying mechanism includes an active roller, a driving motor, and a driven roller. The output shaft of the driving motor is fixedly connected to the active roller, and a gap is left between the active roller and the driven roller for the rubber strip to pass through; the traction mechanism includes a cylinder and a clamp connected to the piston rod of the cylinder. The cylinder controls the movement of the clamp, which is the length of the rubber strip to be cut. After the clamp clamps one end of the rubber belt, the cylinder brings the clamp to pull the rubber strip into the cutting mechanism. The cutting mechanism includes a cutting knife and a cylinder that drives the cutting knife to move up and down. The cutting mechanism also includes a pressing plate. When the clamp pulls a certain length of the rubber strip, the pressing plate presses the rubber strip down through the cylinder and then the cutter cuts the rubber strip downward.

[0004] Regarding the above-mentioned related technologies, when the cutting mechanism cuts the rubber strip, the conveying mechanism is still conveying the rubber strip, and the rubber strip between the active roller and the pressure plate will arch or deform, causing the rubber strip to wrinkle. The wrinkled rubber strip enters the cutting mechanism, which will affect the length after cutting and cause a large error. Summary of the Invention

[0005] In order to improve the problem of large length error of rubber strips after being cut, the present application provides a rubber strip precision cutting machine.

[0006] The present application provides a rubber strip cutting machine, which adopts the following technical solution:

[0007] A rubber strip fine cutting machine includes a cutting mechanism, a traction mechanism, and a conveying mechanism, wherein the conveying mechanism includes a front conveying portion and a rear conveying portion, and the rear conveying portion is close to the cutting mechanism;

[0008] The front conveying part includes a driving roller, a driven roller, and a driving source for driving the driving roller to rotate, and a gap is left between the driving roller and the driven roller for the rubber strip to enter. The rear conveying part includes a plurality of tensioning wheels arranged at intervals;

[0009] The conveying mechanism also includes a vertical rod and a sensor mounted on the vertical rod. A plurality of sensors are arranged at intervals along the vertical direction of the vertical rod. The vertical rod is located between the front conveying part and the rear conveying part. The driving source of the front conveying part is a variable speed driving source. The sensors are connected to the driving source. When the rubber strip passes through different sensors, different sensors drive the driving source to output different speeds.

[0010] It also includes a transition box, which is close to the side of the front end conveying part away from the vertical rod.

[0011] By adopting the above technical solution, the long rubber strip is first placed in the transition box. When the traction mechanism pulls the rubber strip, the driving source of the front conveying part is turned on, and the cooperation of the active roller and the driven roller of the front conveying part provides power to the rubber strip. The rubber strip is fed between the front conveying part and the rear conveying part. When the traction mechanism pulls the rubber strip, the rubber strip between the front conveying part and the rear conveying part is pulled into the multiple tensioning wheels of the rear conveying part. The tensioning wheels limit and tension the rubber strip.

[0012] When the cutting mechanism cuts the rubber strip, the traction mechanism no longer pulls the rubber strip, and the front-end conveying part is still continuously conveying the rubber strip. The rubber strip between the front-end conveying part and the rear-end conveying part sags close to the ground, and the rubber strip triggers the sensor on the vertical rod closest to the ground. The sensor transmits a signal to the driving source, causing the driving source to slow down and enter the lowest speed to convey the rubber strip; when the cutting mechanism finishes cutting the rubber strip, the traction mechanism continues to pull the rubber strip into the rear-end conveying part, and the rubber strip between the front-end conveying part and the rear-end conveying part becomes shorter. The rubber strip approaches other sensors on the vertical rod, and the sensors drive the driving source to convey the rubber strip at high speed, so that there is a sufficient supply of rubber strips between the front-end conveying part and the rear-end conveying part. When the traction mechanism stops traction again, the driving source enters a low-speed rotation mode again, slowing down the conveying speed of the rubber strip. The conveying mechanism can change the conveying speed of the rubber strip according to the working state of the traction mechanism, so that the rubber strip maintains a good flatness when it is in the rear-end conveying part, reduces the phenomenon of wrinkles in the rubber strip, and thereby improves the length accuracy error of the rubber strip after being cut.

[0013] Optionally, a plurality of guide plates are installed in the transition box, and the guide plates are arranged at intervals along the conveying direction of the rubber strip, with a height difference between two adjacent guide plates. A guide groove is provided on the guide plate, and a downward pressure assembly is installed in the gap between two adjacent guide plates. The downward pressure assembly includes a mounting seat and a downward pressure ring sliding up and down on the mounting seat.

[0014] By adopting the above technical solution, when the rubber strip enters the transition box, the rubber strip is located in the guide groove of the guide plate. When the rubber strip is long, the rubber strip between the two adjacent guide plates is pressed down by the down-pressing ring, and a space for accommodating the rubber strip is formed between the two guide plates, so that the long rubber strip is transported forward in a wave shape. The cooperation between the guide plate and the down-pressing assembly can reduce the irregular winding of the rubber strip in the transition box, thereby reducing the generation of wrinkles.

[0015] Optionally, the lower pressure ring is connected to a sliding rod, and the sliding rod slides up and down on the mounting seat.

[0016] By adopting the above technical solution, when the rubber belt passes between the two guide plates, the height position of the lower pressure ring on the mounting seat is determined according to the sagging degree of the rubber belt, and the lower pressure ring plays a limiting role on the rubber belt.

[0017] Optionally, the inner ring wall of the lower pressure ring is fixedly connected with two horizontal parts, and a spacing is left between the two horizontal parts. A counterweight is installed on the outer peripheral side of the lower pressure ring away from the sliding rod. The lower pressure ring is rotatably connected to the sliding rod, and the rotation center line of the lower pressure ring and the central axis of the sliding rod are perpendicular to each other.

[0018] By adopting the above technical solution, if the rubber belt is in a flat state when entering the lower pressure ring, the upper surface of the lower pressure ring contacts the two horizontal parts at the same time. If the rubber belt is partially flipped during transportation in the transition box, the rubber belt enters the gap between the two horizontal parts, or the rubber belt only contacts one of the horizontal parts. The lower pressure ring rotates due to its own gravity and the gravity of the counterweight block. The staff can quickly find the place where the rubber belt is flipped and deformed according to the change in the position of the lower pressure ring, and manually correct the rubber belt when it is transported at a high speed.

[0019] Optionally, the guide plate is installed on multiple limit rods, the limit rods are located in the guide groove, the guide plate is provided with a limit groove at the inner bottom wall of the guide groove, one end of the limit rod is inserted into the limit groove, a return spring is installed in the limit groove, and the return spring is fixedly connected to the lower end of the limit rod.

[0020] By adopting the above technical solution, the return spring drives the limit rod to have an upward trend. When the rubber strip passes through the guide groove, the rubber strip presses down part of the limit rod by its own gravity. The limit rod that is not pressed down is higher than the limit rod that is pressed down. The limit rod that is pressed down supports the rubber strip, and the limit rod that is not pressed down limits the rubber strip. When the rubber strip is pulled, the width direction of the rubber strip is limited, and the limit rod that is not pressed down has a corrective effect on the rubber strip, thereby reducing the occurrence of flipping of the long rubber strip.

[0021] Optionally, the limiting rod is rotatably mounted with a first rotating ring, and the first rotating ring rotates with the limiting rod as the rotation center.

[0022] By adopting the above technical solution, when the guide plate guides the rubber strip, the side wall of the rubber strip contacts the limit rod that is not pressed down through the first rotating ring. As the rubber strip is pulled, the rubber strip contacts the first rotating ring, and the first rotating ring rotates with the limit rod as the rotation center, so that the friction between the rubber strip and the limit rod is reduced when it passes through the limit rod.

[0023] Optionally, a second swivel is rotatably mounted on the limit rod, the second swivel and the first swivel are coaxially arranged, the first swivel is located inside the second swivel, and two sliding parts are slidably mounted on the limit rod, and the first swivel and the second swivel are rotatably connected to the two sliding parts respectively.

[0024] By adopting the above technical solution, the upper end of the limit rod is not pressed down by the rubber belt, and the limit rod is subjected to a higher elastic force of the return spring than the rubber strip. However, when the limit rod rotates around the first and second rotating rings, there are places below the rubber belt. The rubber belt has a limiting effect on the first or second rotating ring, so that the first or second rotating ring slides relative to the limit rod through the sliding member. If the rubber belt only limits the second rotating ring, the first rotating ring can also move upward with the limit rod, and the side wall of the rubber belt contacts the outer peripheral side of the first rotating ring. If the rubber belt does not limit the first and second rotating rings, the first and second rotating rings can both move upward with the limit rod, and the side wall of the rubber belt contacts the outer peripheral side of the second rotating ring. Through the arrangement of the first and second rotating rings, although the horizontal positions of the rubber belt in different guide grooves are different, the friction between the rubber belt and the limit rod can be minimized.

[0025] Optionally, the upper end of the limiting rod is higher than the first swivel and the second swivel.

[0026] By adopting the above technical solution, after the rubber belt contacts the upper end of the limit rod, the part of the limit rod that is not pressed down remains stationary, the first rotating ring and the second rotating ring of the limit rod that is not pressed down are not located below the rubber belt, and the side wall of the rubber belt contacts the outer peripheral side of the second rotating ring. If the second rotating ring of the limit rod that is not pressed down is located below the rubber belt, the second rotating ring supports the rubber belt, and the first rotating ring contacts the side wall of the rubber belt.

[0027] In summary, this application has at least one of the following beneficial effects:

[0028] 1. When the cutting mechanism cuts the rubber strip, part of the rubber strip is tensioned by multiple tensioning wheels, and part is located between the front conveyor and the rear conveyor. The rubber strip located between the front conveyor and the rear conveyor triggers the driving source to convey the rubber strip at a low speed, so that the rubber strip can remain in a conveyed state and is not easily accumulated in front of the cutting mechanism to form wrinkles. When the traction mechanism pulls the rubber strip, the rubber strip is tensioned by the rear conveyor and smoothly fed into the cutting mechanism, thus improving the problem of large length errors after the rubber strip is cut;

[0029] 2. The guide plate and the downward pressure assembly in the transition box cooperate with each other so that the long rubber strips entering the transition box enter the front conveying part in a wavy and smooth manner. The transition box can accommodate longer rubber strips, ensuring sufficient supply of rubber strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of a conveying mechanism conveying a rubber strip according to an embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the overall structure of the transition box in an embodiment of the present application;

[0033] Figure 4 is a schematic diagram of the cooperation between the pressing assembly and the guide plate in an embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of the overall structure of the pressing assembly in an embodiment of the present application;

[0035] Figure 6 This is a schematic structural diagram of a guide plate in accordance with an embodiment of the present application in which a limit rod is installed;

[0036] Figure 7 is a cross-sectional view of a limiting rod in a guide plate according to an embodiment of the present application;

[0037] Figure 8 This is a cross-sectional diagram showing the cooperation between the limit rod and the first rotating ring and the second rotating ring in the embodiment of the present application.

[0038] Explanation of the accompanying drawings: 1. Cutting mechanism; 2. Traction mechanism; 3. Conveying mechanism; 6. Front end conveying part; 61. Active roller; 62. Driven roller; 7. Rear end conveying part; 71. Tensioning wheel; 8. Vertical rod; 81. First sensor; 82. Second sensor; 83. Third sensor; 9. Transition box; 91. Guide plate; 92. Guide groove; 93. Limit rod; 931. Ball; 94. Return spring; 95. First swivel; 96. Second swivel; 97. Groove; 10. Pressing assembly; 101. Mounting seat; 102. Pressing ring; 103. Sliding rod; 104. Rectangular block; 105. Counterweight; 20. Sliding part; 201. Sliding rod; 202. Sliding block; 203. Bump. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-8 This application is described in further detail.

[0040] The embodiment of the present application discloses a rubber strip cutting machine. Figure 1 A rubber strip finishing machine includes a cutting mechanism 1, a traction mechanism 2, and a conveying mechanism 3. The cutting mechanism 1 and the traction mechanism 2 are prior art and will not be described in detail in this application. The conveying mechanism 3 includes a front conveying portion 6 and a rear conveying portion 7, with the rear conveying portion 7 being adjacent to the cutting mechanism 1. The rubber strip finishing machine also includes a transition box 9, in which the rubber strips to be cut are placed. The transition box 9 is located on the side of the front conveying portion 6 away from the rear conveying portion 7.

[0041] Reference Figure 2 The front conveying section 6 includes a driving roller 61, a driven roller 62, and a drive source, a variable-speed motor, that drives the driving roller 61. The output shaft of the variable-speed motor is coaxially fixed to the driving roller 61, and a gap is left between the driving roller 61 and the driven roller 62 for the rubber strip to enter. After the rubber strip enters between the driving roller 61 and the driven roller 62, the rotation of the driving roller 61 drives the driven roller 62 to rotate. The cooperation between the driving roller 61 and the driven roller 62 pulls the rubber strip forward.

[0042] The rear conveyor 7 includes multiple spaced tension rollers 71. The driving roller 61 and the tension rollers 71 are at the same height. After passing between the driving roller 61 and the driven roller 62, the rubber strip enters the multiple tension rollers 71. One end of the rubber strip passes through the tension rollers 71, is clamped by the clamping claws of the traction mechanism 2, and then enters the cutting mechanism 1. The multiple tension rollers 71 tension and limit the rubber strip, ensuring that the rubber strip is finally cut in a flat state.

[0043] The conveying mechanism 3 also includes a vertical rod 8 and a sensor mounted on the vertical rod 8. The vertical rod 8 is located between the front conveying section 6 and the rear conveying section 7. The sensors include a first sensor 81, a second sensor 82, and a third sensor 83. The first sensor 81, the second sensor 82, and the third sensor 83 are spaced apart from top to bottom along the vertical direction of the vertical rod 8. The first sensor 81, the second sensor 82, and the third sensor 83 are connected to the drive source. The first sensor 81, located at the highest position of the vertical rod 8, is lower than the height of the tensioning pulley 71 and the active roller 61. When the traction mechanism 2 pulls the rubber strip, the rubber strip between the front conveying section 6 and the rear conveying section 7 is shorter. The rubber strip passes the first sensor 81, which triggers the first sensor 81, causing the variable speed motor to convey the rubber strip at high speed.

[0044] When the cutting mechanism 1 cuts the rubber strip downwards, the traction mechanism 2 no longer pulls the rubber strip, the rubber belt located between the multiple tensioning wheels 71 remains stationary, the front conveying part 6 continues to convey the rubber strip, and the length of the rubber strip between the front conveying part 6 and the rear conveying part 7 continues to increase. The rubber strip continues to sag and first approaches the second sensor 82. The second sensor 82 is triggered to cause the speed-changing motor to slow down and enter the medium-speed conveying state of the rubber strip. The rubber strip continues to sag and approaches the third sensor 83. The third sensor 83 is triggered to cause the speed-changing motor to slow down again and enter the low-speed conveying state of the rubber strip.

[0045] Reference Figure 3 The transition box 9 is equipped with multiple guide plates 91, spaced apart along the conveying direction of the rubber strips, with a height difference between adjacent guide plates 91. Guide grooves 92 are defined on the guide plates 91, through which the rubber strips within the transition box 9 are conveyed along the distribution direction of the guide plates 91. The height differences between the guide plates 91 allow the rubber strips to be conveyed forward in a wave-like pattern, allowing the transition box 9 to accommodate longer rubber strips.

[0046] Reference Figure 3 and Figure 4 In order to ensure that the rubber strip can be transported more stably along the distribution direction of the guide plates 91, a pressing assembly 10 is installed in the gap between two adjacent guide plates 91. The pressing assembly 10 includes a mounting seat 101 and a pressing ring 102 that slides up and down on the mounting seat 101. The pressing ring 102 has a ring groove for the rubber strip to pass through. The pressing ring 102 is connected to a slide bar 103, and the pressing ring 102 slides up and down on the mounting seat 101 via the slide bar 103. When the rubber strip is transported, it moves upward or downward with the pressing ring 102. If the rubber strip between the two guide plates 91 is longer, the pressing ring 102 slides downward as the rubber strip droops. If the rubber strip between the two guide plates 91 is shorter, the pressing ring 102 slides upward as the rubber strip rises.

[0047] Reference Figure 4The circular groove of the lower pressure ring 102 is fixedly connected to its inner wall with two horizontal sections. These sections consist of two rectangular blocks 104, the lower surfaces of which are on the same horizontal plane. A gap exists between the two blocks 104, and this gap is greater than the thickness of the rubber strip. When the rubber strip passes horizontally through the lower pressure ring 102, it contacts each of the two blocks 104. If the rubber strip flips, it contacts only one of the blocks 104, or it enters between the two blocks 104.

[0048] Reference Figure 5 The lower pressing ring 102 is rotatably mounted on the slide bar 103. The lower pressing ring 102 has two slide bars 103, and the two slide bars 103 are respectively located on the two end faces of the lower pressing ring 102. The lower pressing ring 102 is rotatably mounted on the slide bar 103 by a rotating shaft, and the rotating shaft and the slide bar 103 are perpendicular to each other. The outer peripheral side of the lower pressing ring 102 facing away from the slide bar 103 is equipped with a counterweight 105, which is a counterweight block. Under the pulling of the front end conveyor 6, the rubber strip in the transition box 9 may also appear to overturn due to the relatively softness of the rubber strip. However, due to the long length of the rubber strip, it is difficult for people to quickly and accurately find the position where the rubber strip is partially overturned. When the rubber strip is partially overturned, the lower pressing ring 102 near the overturning position rotates downward with the rotating shaft as the rotation center, so that people can quickly determine the position where the rubber strip is overturned.

[0049] The rubber strip in the transition box 9 is relatively long. During the process of pulling the rubber strip, the rubber strip is not necessarily in the same straight line when looking down into the transition box 9. In order to limit the width direction of the rubber strip, the rubber strip can no longer move freely along its own width direction.

[0050] In one embodiment, referring to Figure 6 and Figure 7 The guide plate 91 is mounted with multiple limiting rods 93. A limiting slot is defined on the inner bottom wall of the guide slot 92. One end of the limiting rod 93 is inserted into the limiting slot, and a return spring 94 is mounted within the limiting slot. One end of the return spring 94 is fixedly connected to the lower end of the limiting rod 93, while the other end of the return spring 94 is fixedly mounted to the bottom wall of the limiting slot. The return spring 94 is a compression spring. The return spring 94 exerts a constant upward force on the limiting rod 93.

[0051] When the rubber strip is located in the guide groove 92, the rubber strip presses down part of the limiting rod 93, and the limiting rod 93 not pressed down by the rubber strip contacts the side wall of the rubber strip, so that the limiting rod 93 can limit the width direction of the rubber strip. Under the limitation of the limiting rod 93 and the lower pressure ring 102, the rubber strip in the transition box 9 can be basically conveyed continuously in a flat state.

[0052] Reference Figure 8The limiting rod 93 is rotatably mounted with a first swivel 95 and a second swivel 96. The first swivel 95 and the second swivel 96 are coaxially arranged, with their upper ends flush, and both rotate around the limiting rod 93. The first swivel 95 is located inside the second swivel 96, with a gap between them.

[0053] The limiting rod 93 is installed with a sliding member 20 that slides up and down. The sliding members 20 are distributed in two rows above and below. One row has two mutually symmetrical sliding members 20. The upper and lower groups of sliding members 20 are respectively connected to the first swivel 95 and the second swivel 96. The lower end of the first swivel 95 is higher than the lower end of the second swivel 96. The first swivel 95 is connected to the sliding members 20 in the upper row.

[0054] Reference Figure 8 The sliding member 20 comprises a sliding rod 201 and a slider 202 connected to one end of the sliding rod 201. The limiting rod 93 is a hollow structure. The slider 202 slides in the inner wall of the limiting rod 93. One end of the sliding rod 201 extends outside the limiting rod 93. The limiting rod 93 is provided with a vertical groove for the sliding rod 201 to slide up and down. There is friction between the slider 202, the sliding rod 201 and the limiting rod 93. An external force is required to push the sliding member 20 on the limiting rod 93. An annular groove 97 is provided on the inner wall of the first swivel 95 and the second swivel 96. A protrusion 203 is connected to the end of the sliding rod 201 away from the slider 202. The sliding rod 201 is inserted into the groove 97 through the protrusion 203. The protrusion 203 is a T-shaped structure, and the cross section of the groove 97 is a T-shaped structure.

[0055] When the first swivel 95 and the second swivel 96 are installed on the limiting rod 93, the inner walls of the first swivel 95 and the second swivel 96 are provided with a clearance groove (not shown in the figure) for the protrusion 203 to enter the groove 97, and then one end of the sliding rod 201 is inserted into the limiting rod 93. The lower end of the limiting rod 93 is open, and the slider 202 is fixedly connected to the sliding rod 201 through the opening of the limiting rod 93.

[0056] If the first or second swivel ring 95, 96 on the limiting rod 93 is not pressed downward by the rubber strip, it may be located below the rubber strip. If the second swivel ring 96 is located below the rubber strip, it is pushed downward by the rubber strip and supports the rubber strip. The first swivel ring 95 contacts the sidewall of the rubber strip, and when the rubber strip passes the first swivel ring 95, the first swivel ring 95 can rotate about the limiting rod 93, thereby reducing the friction between the limiting rod 93 and the rubber strip. If neither the first or second swivel ring 95, 96 is located below the rubber strip, the second swivel ring 96 contacts the rubber strip and rotates about the limiting rod 93. If the first or second swivel ring 95, 96 of the limiting rod 93 is located below the rubber strip, the limiting rod 93 limits the rubber strip, and the upper ends of the first or second swivel ring 95, 96 support the rubber strip.

[0057] The rubber strip generally presses down multiple limit rods 93. Since the first swivel 95 and the second swivel 96 have friction with the limit rod 93, if the gravity of the rubber strip presses down the limit rod 93, the first swivel 95 and the second swivel 96 at the same time, a large reaction force needs to be overcome, so the limit rod 93 will not be sunken too much, and the pressure on the return spring 94 will be partially shared by the first swivel 95 and the second swivel 96, which can also extend the service life of the return spring 94.

[0058] The upper end of the limiting rod 93 is higher than the first rotating ring 95 and the second rotating ring 96. When part of the limiting rod 93 is pressed down, the rubber strip contacts the first rotating ring 95 and the second rotating ring 96 on the limiting rod 93 that is not pressed down, or the second rotating ring 96 and the first rotating ring 95 on the limiting rod 93 that is not pressed down support the rubber strip. The limiting rod 93 and the first rotating ring 95 and the second rotating ring 96 successively contact the rubber strip, which can make the rubber strip enter the guide groove 92 more smoothly. The rubber strip is limited by the limiting rod 93 only when the position of the rubber strip in the guide groove 92 is determined.

[0059] A ball 931 is rotatably mounted on the upper end of the limiting rod 93 , and the lower surface of the rubber strip contacts the limiting rod 93 through the ball 931 , which can also reduce the friction between the limiting rod 93 and the rubber strip.

[0060] The implementation principle of a rubber strip cutting machine in the embodiment of the present application is as follows:

[0061] When the cutting mechanism 1 cuts the rubber strip, the rubber strip is in a state of being transported at a low speed. When the traction mechanism 2 pulls the rubber strip, the rubber strip can be supplied in time and pulled in a flat state. When the rubber strip is transported flatly to the cutting mechanism 1, the cutting mechanism 1 cuts out flat rubber strips in batches, and the length error of each cut rubber strip is small.

[0062] The rubber strip to be cut first enters the transition box 9. The setting of the limit rod 93 and the lower pressure ring 102 in the transition box 9 can make the rubber strip in a flat state at the beginning. Therefore, the rubber strip can be conveyed flatly when being conveyed by the front conveying part 6, reducing the steps of manually arranging the long rubber strips.

[0063] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rubber strip fine cutting machine, comprising a cutting mechanism (1), a traction mechanism (2) and a conveying mechanism (3), characterized in that: The conveying mechanism (3) comprises a front conveying portion (6) and a rear conveying portion (7), wherein the rear conveying portion (7) is close to the cutting mechanism (1); The front conveying portion (6) includes a driving roller (61), a driven roller (62), and a driving source (63) for driving the driving roller (61) to rotate. A gap is left between the driving roller (61) and the driven roller (62) for the rubber strip to enter. The rear conveying portion (7) includes a plurality of tensioning wheels (71) arranged at intervals. The conveying mechanism (3) further comprises a vertical rod (8) and a sensor mounted on the vertical rod (8), wherein a plurality of sensors are arranged at intervals along the vertical direction of the vertical rod (8), the vertical rod (8) is located between the front conveying portion (6) and the rear conveying portion (7), the driving source (63) of the front conveying portion (6) is a variable speed driving source (63), and the sensor is connected to the driving source (63), and when the rubber strip passes through different sensors, different sensors drive the driving source (63) to output different speeds; It also includes a transition box (9), the transition box (9) being close to a side of the front conveying portion (6) away from the vertical rod (8); A plurality of guide plates (91) are installed in the transition box (9), the guide plates (91) are spaced apart along the conveying direction of the rubber strip, and there is a height difference between two adjacent guide plates (91), a guide groove (92) is provided on the guide plate (91), and a pressing assembly (10) is installed in the interval between the two adjacent guide plates (91), the pressing assembly (10) comprising a mounting seat (101) and a pressing ring (102) sliding up and down on the mounting seat (101); The lower pressure ring (102) is connected to a slide rod (103), and the slide rod (103) slides up and down on the mounting seat (101); The inner ring wall of the lower pressure ring (102) is fixedly connected with two horizontal parts, and a distance is left between the two horizontal parts. A counterweight (105) is installed on the outer peripheral side of the lower pressure ring (102) away from the slide rod (103). The lower pressure ring (102) is rotatably connected to the slide rod (103), and the rotation center line of the lower pressure ring (102) and the central axis of the slide rod (103) are perpendicular to each other.

2. The rubber strip cutting machine according to claim 1, characterized in that: The guide plate (91) is installed on a plurality of limiting rods (93), the limiting rods (93) are located in the guide groove (92), the guide plate (91) is provided with a limiting groove at the inner bottom wall of the guide groove (92), one end of the limiting rod (93) is inserted into the limiting groove, a return spring (94) is installed in the limiting groove, and the return spring (94) is fixedly connected to the lower end of the limiting rod (93).

3. The rubber strip cutting machine according to claim 2, characterized in that: The limiting rod (93) is rotatably mounted with a first rotating ring (95), and the first rotating ring (95) rotates with the limiting rod (93) as a rotation center.

4. The rubber strip cutting machine according to claim 3, characterized in that: A second rotating ring (96) is rotatably mounted on the limiting rod (93), the second rotating ring (96) and the first rotating ring (95) are coaxially arranged, the first rotating ring (95) is located inside the second rotating ring (96), and two sliding members (20) are slidably mounted on the limiting rod (93), the first rotating ring (95) and the second rotating ring (96) are rotatably connected to the two sliding members (20) respectively.

5. The rubber strip cutting machine according to claim 4, characterized in that: The upper end of the limiting rod (93) is higher than the first rotating ring (95) and the second rotating ring (96).

Images