A multi-diameter plastic pipe cutting device

Abstract

The present application relates to a kind of multi-pipe diameter plastic pipe cutting device, the multi-pipe diameter plastic pipe cutting device, including servo frame, servo frame is sequentially provided with pipe locking mechanism and cutting mechanism along its servo direction, the servo direction of servo frame is the traction direction of pipe, pipe locking mechanism includes left pipe locking assembly and right pipe locking assembly, two respectively include multiple lock sleeves for plastic pipe sequentially moving through, multiple lock sleeves are fixed with pipe locking frame, pipe locking frame is driven to move left and right by driving element, to make plastic pipe have the first state of being locked and the second state of being released under the cooperation of two pipe locking assemblies;When plastic pipe is in the first state, servo frame can be moved to servo direction by driving mechanism at the traction speed of plastic pipe;When plastic pipe changes from the first state to the second state, servo frame can be reset by driving mechanism;The cutting device can be suitable for cutting plastic pipe of multiple pipe diameters on the basis of guaranteeing the cutting precision of plastic pipe as far as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of plastic pipe processing, in particular to a multi-diameter plastic pipe cutting device. BACKGROUND

[0002] As an important part of chemical building materials, plastic pipes are widely accepted by users due to their superior performance, hygiene, environmental protection, and low consumption. There are several types of plastic pipes, including UPVC drainage pipes, UPVC water supply pipes, aluminum-plastic composite pipes, polyethylene (PE) water supply pipes, and polypropylene (PPR) hot water pipes.

[0003] The existing plastic pipe production process mainly includes the steps of batching, mixing, extrusion, shaping, cooling, marking, pulling, cutting, and collecting. Cutting is one of the key steps in plastic pipe production. However, it is difficult to cut accurately because plastic pipes need to be cut while moving. Therefore, how to improve the accuracy of fixed-length cutting is the current research focus. Patent CN113320115A discloses a plastic pipe production line and production method. The cutting structure in the patent uses a relatively static method to cut plastic pipes, which greatly improves the accuracy of fixed-length cutting of plastic pipes. However, the pipe diameter that can be cut is basically limited to one type (or a very small range). For plastic pipe processing, pipes are often custom-made by users, so there are more than one type of pipe diameter required. Therefore, how to expand the range of pipe diameters while ensuring cutting accuracy is a problem that needs to be solved. SUMMARY

[0004] To overcome the shortcomings of the prior art, the present application provides a multi-diameter plastic pipe cutting device with a simple structure that can cut plastic pipes within a certain diameter range and ensure that the cutting end face is as neat as possible, thereby ensuring the cutting accuracy of plastic pipes.

[0005] The technical solution adopted by the present application to solve the above technical problems is as follows:

[0006] A multi-diameter plastic pipe cutting device includes a follow-up frame, a pipe locking mechanism, and a cutting mechanism arranged in sequence along the follow-up direction of the follow-up frame. The follow-up direction of the follow-up frame is the pulling direction of the plastic pipe. The pipe locking mechanism includes a left pipe locking assembly and a right pipe locking assembly, each of which includes a plurality of locking sleeves through which the plastic pipe moves sequentially. The plurality of locking sleeves are fixed to a pipe locking frame. The pipe locking frame can be driven to move left and right by a driving member fixed to the follow-up frame, so that the plastic pipe has a first state of being locked and a second state of being released under the cooperation of the left pipe locking assembly and the right pipe locking assembly. At least one locking sleeve in the plurality of locking sleeves of the left pipe locking assembly is arranged between the adjacent two locking sleeves of the right pipe locking assembly.

[0007] When the plastic pipe is in the first state, the follower frame can be moved in the follower direction at a pulling speed of the plastic pipe by a driving mechanism; when the plastic pipe is changed from the first state to the second state, the follower frame can be reset by the driving mechanism;

[0008] The lock sleeve comprises two ring plates fixed with the lock pipe frame, the two ring plates are formed with through holes in the follower direction, a plurality of fixed shafts are uniformly connected between the two ring plates in the circumferential direction of the through hole, the plurality of fixed shafts are symmetrically arranged on the ring plate with a horizontal plane passing through the center line of the through hole, a rolling sleeve is rotatably arranged on each fixed shaft, and the rolling sleeve extends to the through hole from the inner side of the through hole, so that the plastic pipe can be moved to the pulling center line position and clamped by the left lock pipe mechanism and the right lock pipe mechanism.

[0009] Further, the radius range of the plastic pipe that can be cut by the long cutting device is set as a-b, the center distance of the adjacent two fixed shafts is less than a, and the radius of the circular hole surrounded by the plurality of rolling sleeves is greater than b.

[0010] Further, the left lock pipe assembly and the right lock pipe assembly each comprise two lock sleeves, and the two lock sleeves of the left lock pipe assembly are located between the two lock sleeves of the right lock pipe assembly.

[0011] The limit plate is further fixed on the follower frame, the limit plate is located between the two lock sleeves of the left lock pipe assembly, a pipe hole for the plastic pipe to pass through is formed in the limit plate, the lock pipe frame of the left lock pipe assembly is slidably connected with the limit plate on the left side of the pipe hole, and the lock pipe frame of the right lock pipe assembly is slidably connected with the limit plate on the right side of the pipe hole.

[0012] Further, the driving mechanism comprises a sliding rail arranged in the follower direction, the follower frame is arranged on the sliding rail, and a gas cylinder is arranged on one side of the follower frame to move the follower frame on the sliding rail reciprocally through the gas cylinder.

[0013] Further, the cutting mechanism comprises a rotary cutter, the rotary cutter is driven by a motor, and the motor is lifted by a lifting mechanism to cut off the plastic pipe clamped by the lock pipe mechanism.

[0014] The cutting device has the advantages that: the plastic pipe can be cut relatively stationary by the cooperation of the follower frame and the driving mechanism, the basis for accurate cutting is realized; the left lock pipe assembly and the right lock pipe assembly of the lock pipe mechanism can clamp and position plastic pipes of various diameters, and the center line of the pipe after clamping and positioning can coincide with the pulling center line regardless of the pipe diameter, so that the verticality of the cutter and the pipe is ensured, the end surface of the cut is uniform, and the pipe cutting precision is improved. Therefore, the cutting device can be applied to cutting plastic pipes of various diameters on the basis of ensuring the cutting precision of the plastic pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Structure diagram of one embodiment of the present application;

[0016] Figure 2 Structure diagram of another embodiment of the present application; Figure 1 Structure diagram of another embodiment of the present application;

[0017] Figure 3 Structure diagram of one embodiment of the present application; Figure 1 Structure diagram of one embodiment of the present application;

[0018] Figure 4 Structure diagram of one embodiment of the present application; Figure 3 Structure diagram of one embodiment of the present application;

[0019] Figure 5 Structure diagram of one embodiment of the present application; Figure 1 Structure diagram of one embodiment of the present application;

[0020] 1, trolley, 2, pipe locking mechanism, 3, cutting mechanism, 4, driving mechanism, 5, limiting plate;

[0021] 21, locking sleeve, 22, pipe locking frame, 23, driving member, 211, ring plate, 212, through hole, 213, fixed shaft, 214, rolling sleeve, 31, rotary cutter, 32, motor, 33, lifting mechanism, 41, sliding rail, 42, air cylinder. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of the present application, the present application will be described in detail below with specific embodiments, and in conjunction with the accompanying drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0023] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] In this application, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0025] As shown in Figures 1-5 The multi-diameter plastic pipe cutting device in the embodiment comprises a follower frame 1, a pipe locking mechanism 2 and a cutting mechanism 3 are sequentially arranged on the follower frame 1 along the follower direction, the follower direction of the follower frame 1 is the traction direction of the plastic pipe, the pipe locking mechanism 2 comprises a left pipe locking assembly and a right pipe locking assembly, both of which comprise a plurality of locking sleeves 21 through which the plastic pipe is sequentially movable, the plurality of locking sleeves 21 are fixed with a pipe locking frame 22, the pipe locking frame 22 can be driven to move left and right by a driving member 23 fixed on the follower frame 1, so that the plastic pipe has a first state of being locked and a second state of being released under the cooperation of the left pipe locking assembly and the right pipe locking assembly, among the plurality of locking sleeves 21 of the left pipe locking assembly, at least one locking sleeve is arranged between the adjacent two locking sleeves of the right pipe locking assembly, and the cross arrangement is more conducive to clamping the plastic pipe, and the cross arrangement can be as shown in Figure 1 The sequential cross arrangement can also be adopted;

[0026] When the plastic pipe is in the first state, the follower frame 1 can be moved in the follower direction at a traction speed of the plastic pipe by a driving mechanism 4; when the plastic pipe is transformed from the first state to the second state, the follower frame 1 can be reset by the driving mechanism 4;

[0027] The locking sleeve 21 comprises two ring plates 211 fixed with the pipe locking frame 22, the two ring plates 211 are formed with through holes 212 along the follower direction, a plurality of fixed shafts 213 are uniformly connected between the two ring plates 211 along the circumferential direction of the through hole, the plurality of fixed shafts 213 are symmetrically arranged on the ring plate 211 with a horizontal plane passing through the center line of the through hole, a rolling sleeve 214 is rotatably sleeved on each fixed shaft 213, the rolling sleeve 214 extends into the through hole 212 towards the inner side of the through hole, so that the plastic pipe can be moved to the traction center line position and clamped by the left pipe locking mechanism and the right pipe locking mechanism moving away from each other.

[0028] Working principle: when the plastic pipe needs to be cut, the driving mechanism 4 acts on the follow-up frame 1 to move in the follow-up direction, and the left pipe locking assembly and the right pipe locking assembly cooperate to clamp the plastic pipe. The specific clamping process is as follows: when the left pipe locking assembly and the right pipe locking assembly are away from each other from the overlapping state of the locking sleeves to the crossing state, under the action of the rolling sleeves of the respective locking sleeves, the plastic pipe is squeezed and moved upward until it is clamped at the traction centerline position. The use of such a structure to clamp the plastic pipe can achieve clamping of the pipe in a larger diameter range, and on the other hand, because the pipe is always in the locking sleeve, the clamping will not fail. After the pipe is clamped, the follow-up frame will continue to move in the follow-up direction, and after the cutting mechanism cuts off the pipe, the locking mechanism releases the pipe, and then the follow-up frame is reset under the action of the driving mechanism for the next clamping and cutting. When cutting, since the pipe is located on the traction centerline, it can be perpendicular to the cutter of the cutting mechanism, which makes the pipe breakage a relatively neat circular cut (since the cutting device is suitable for cutting pipes of various diameters, when the pipe is in a non-clamped state, the pipe deviates downward from the traction centerline. If clamped at the deviated position, the cut pipe end face is a beveled cut, which affects the precision of the pipe).

[0029] Further, as shown in Figure 4 , the set long cutting device can cut the radius range of the plastic pipe a-b, the center distance of the adjacent two fixed shafts is less than a, and the radius of the circular hole surrounded by the plurality of rolling sleeves is greater than b. Such setting ensures that the plastic pipe can be smoothly moved to the traction centerline position for clamping, and the follow-up frame can be reset without affecting the plastic pipe.

[0030] Further, the driving mechanism 4 includes a sliding rail 41 arranged in the follow-up direction, and the follow-up frame 1 is arranged on the sliding rail 41. One side of the follow-up frame 1 is provided with a pneumatic cylinder 42, so that the follow-up frame 1 reciprocates on the sliding rail 41 through the pneumatic cylinder 42.

[0031] Further, as shown in Figure 5 , the locking mechanism can specifically adopt the following structure: the left pipe locking assembly and the right pipe locking assembly each include two locking sleeves 21, and the two locking sleeves of the left pipe locking assembly are located between the two locking sleeves of the right pipe locking assembly. In order to move the left pipe locking assembly and the right pipe locking assembly accurately, a supporting plate fixedly connected with the follow-up frame can be arranged below the two assemblies, and the two assemblies are slidingly arranged on the supporting plate. The following settings can also be made: specifically, the follow-up frame 1 is further fixedly connected with a limiting plate 5, the limiting plate 5 is located between the two locking sleeves 21 of the left pipe locking assembly, the limiting plate 5 is provided with a pipe hole for the plastic pipe to pass through, the pipe locking frame of the left pipe locking assembly is slidingly connected with the limiting plate 5 on the left side of the pipe hole, and the pipe locking frame of the right pipe locking assembly is slidingly connected with the limiting plate 5 on the right side of the pipe hole.

[0032] Further, the cutting mechanism 3 comprises a rotary cutter 31 driven by a motor 32, and the motor 32 is lifted by a lifting mechanism 33 to cut the plastic pipe clamped by the pipe locking mechanism. As to the lifting mechanism, a pneumatic cylinder can be used, but is not limited thereto.

[0033] The above detailed description cannot be regarded as a limitation to the protection scope of the present application, and any alternative improvement or transformation made by those skilled in the art to the embodiments of the present application shall fall within the protection scope of the present application. The present application is not detailed, and all the known technologies to those skilled in the art are included.

Claims

1. A multi-diameter plastic pipe cutting device, characterized in that, The device includes a follower frame, on which a tube locking mechanism and a cutting mechanism are sequentially arranged along its following direction. The following direction of the follower frame is the traction direction of the plastic tube. The tube locking mechanism includes a left tube locking assembly and a right tube locking assembly, each of which includes multiple locking sleeves through which the plastic tube moves sequentially. The multiple locking sleeves are fixed to a tube locking frame. The tube locking frame can be driven to move left and right by a driving component fixed to the follower frame, so that the plastic tube has a first locked state and a second released state under the cooperation of the left tube locking assembly and the right tube locking assembly. Among the multiple locking sleeves of the left tube locking assembly, at least one locking sleeve is located between two adjacent locking sleeves of the right tube locking assembly. When the plastic pipe is in the first state, the follower frame can move in the follower direction at a speed equal to the traction speed of the plastic pipe through a drive mechanism; when the plastic pipe changes from the first state to the second state, the follower frame can be reset through the drive mechanism. The locking sleeve includes two ring plates fixed to the locking tube frame. The two ring plates have through holes formed along the following direction. Multiple fixed shafts are evenly connected between the two ring plates along the circumferential direction of the through holes. The multiple fixed shafts are symmetrically arranged on the ring plates with a horizontal plane passing through the center line of the through holes. A roller sleeve is rotatably sleeved on each fixed shaft. The roller sleeve extends into the through hole towards the inside of the through hole so that the plastic tube can be moved to its traction center line position and clamped by pushing the left locking tube mechanism and the right locking tube mechanism away from each other.

2. The multi-diameter plastic pipe cutting device according to claim 1, characterized in that, If the radius range of plastic pipes that the long cutting device can cut is set to ab, then the center distance between two adjacent fixed shafts is less than a, and the radius of the circular hole formed by multiple rolling sleeves is greater than b.

3. The multi-diameter plastic pipe cutting device according to claim 1, characterized in that, The left locking tube assembly and the right locking tube assembly each include two locking sleeves, wherein the two locking sleeves of the left locking tube assembly are located between the two locking sleeves of the right locking tube assembly; A limiting plate is also fixedly connected to the follower frame. The limiting plate is located between the two locking sleeves of the left locking tube assembly. The limiting plate has a tube hole for the plastic tube to pass through. The locking tube frame of the left locking tube assembly slides with the limiting plate on the left side of the tube hole, and the locking tube frame of the right locking tube assembly slides with the limiting plate on the right side of the tube hole.

4. The multi-diameter plastic pipe cutting device according to claim 1, characterized in that, The driving mechanism includes a slide rail arranged along the following direction, the follower is mounted on the slide rail, and a cylinder is provided on one side of the follower to make the follower reciprocate on the slide rail.

5. The multi-diameter plastic pipe cutting device according to claim 1, characterized in that, The cutting mechanism includes a rotary cutter driven by a motor, which is raised and lowered by a lifting mechanism to cut the plastic pipe clamped by the pipe locking mechanism.

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