CN217414196U

CN217414196U - Tubular product cutting device

Info

Publication number: CN217414196U
Application number: CN202220606021.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Wuxi Lead Intelligent Equipment Co Ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-09-13
Anticipated expiration: 2032-03-18

Abstract

The utility model relates to a tubular product cutting device is provided with and props the mechanism in advance, and the elastic support subassembly can the centre gripping vaulting pole in advance to realize supporting the vaulting pole in advance. Because the pre-supporting rod and the elastic supporting component are not fixedly connected but are supported by the elastic abutting effect, when the pipe material belt passes through the pre-supporting rod, the elastic supporting component can be forced to retreat relative to the pre-supporting rod, so that a gap for the pipe material belt to pass through is formed between the elastic supporting component and the pre-supporting rod, and the pipe material belt can smoothly pass through the pre-supporting rod at a preset speed under the pulling of the film pulling mechanism. So, before the film cutting mechanism cuts the pipe material strip, the pre-supporting rod can prop open the pipe material strip to avoid the inner wall adhesion. Therefore, the probability that the cut sheet material is flat is reduced, and when the cutting method is used for cutting the thermal shrinkage film, the cutting yield can be improved.

Description

Tubular product cutting device

Technical Field

The utility model relates to a battery production facility technical field, in particular to tubular product cutting device.

Background

The lithium battery needs to be sleeved with a heat-shrinkable film in the production process so as to protect the battery. For lithium batteries with different specifications, heat shrinkage films with different sizes are required. At present, a thermal shrinkage film material belt is generally cut into sheet materials with specified length by a thermal cutting device in the production process. However, the inner wall of the thermal shrinkage film material belt is easy to adhere in the conveying and cutting processes, so that the cut sheet material is flat. The flat sheet material is not easy to be inserted into the battery, so that the flat sheet material needs to be removed before entering the next working procedure. Therefore, the current yield of cutting the thermal shrinkage film is not high.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a tube cutting device capable of improving the yield of cutting a heat shrinkable film in order to solve the above problems.

A pipe cutting apparatus comprising:

the pipe material belt passes through the pre-supporting rod and can force the elastic supporting component to retreat relative to the pre-supporting rod so as to form a gap for the pipe material belt to pass through between the elastic supporting component and the pre-supporting rod;

the film drawing mechanism is arranged at the downstream of the pre-support mechanism and can draw the pipe material belt to pass through the pre-support rod at a preset speed; and

the film cutting mechanism is arranged at the downstream of the film pulling mechanism and can sequentially cut the tube material belt into a plurality of sheet materials with preset lengths.

In one embodiment, two bearings are disposed on two sides of the pre-supporting rod in the width direction, the two bearings located on the same side are disposed at intervals along the length direction of the pre-supporting rod, the elastic support assembly includes a first roller and a second roller, the first roller and the second roller respectively abut against the two bearings on the two sides of the pre-supporting rod in the width direction of the pre-supporting rod, and at least one of the first roller and the second roller elastically abuts against the bearing.

In one embodiment, the elastic support assembly includes a mounting plate and a first elastic member, the mounting plate can be slidably mounted on the guide plate along the width direction of the pre-support rod, the first roller is rotatably mounted on the guide plate, the second roller is rotatably mounted on the mounting plate, and the first elastic member provides an elastic force to the mounting plate, so that the second roller elastically abuts against the bearing.

In one embodiment, the film drawing mechanism comprises:

the film drawing plate is provided with a material channel for the pipe material belt to pass through;

the driving wheel and the driven wheel are respectively arranged on two opposite sides of the film drawing plate;

the abutting driving part is in transmission connection with the driven wheel and can drive the driven wheel to be close to the driving wheel so as to abut the pipe material belt penetrating through the material channel against the driving wheel;

the first motor is in transmission connection with the driving wheel and drives the driving wheel to rotate.

In one embodiment, the film cutting mechanism comprises:

a fixing plate;

the fixed cutter is fixed on the fixing plate;

the movable cutter is slidably arranged on the fixed plate; and

and the cutting driving assembly can drive the movable cutter to move in a reciprocating manner so as to cut the pipe material belt.

In one embodiment, the cutting drive assembly comprises:

a second motor;

a cam provided at a rotation end of the second motor, the cam having a cam groove;

and one end of the connecting rod is rotatably arranged on the movable cutter, the other end of the connecting rod is provided with a follower, the follower can be slidably arranged in the cam groove, and along with the rotation of the cam, the connecting rod can drive the movable cutter to reciprocate.

In one embodiment, the cutting drive assembly further comprises a second elastic member providing an elastic force to the connecting rod to urge the follower against an inner wall of the cam groove.

In one embodiment, the film splicing device further comprises a film splicing mechanism, wherein the film splicing mechanism comprises:

a rotating assembly;

the rotary disc is arranged at the rotating end of the rotating assembly, and the rotating assembly can drive the rotary disc to rotate around the axis;

the bearing parts are arranged at equal intervals along the circumferential direction of the rotary disc, and along with the rotation of the rotary disc, the bearing parts can sequentially pass through the output end of the film cutting mechanism and bear the sheet materials.

In one embodiment, the rotating assembly comprises a fixed shaft and a rotating shaft, the fixed shaft is of a hollow structure, the rotating shaft is rotatably arranged through the fixed shaft, the rotary disc is fixed at one end of the rotating shaft, and a driving wheel is arranged at the other end of the rotating shaft.

In one embodiment, each bearing piece is provided with a channel for gas to flow through and an adsorption hole communicated with the channel, and negative pressure can be formed on the side surface of each bearing piece through the channel and the adsorption hole so as to adsorb the sheet materials to be borne.

Above-mentioned tubular product cutting device is provided with props the mechanism in advance, and the elasticity supporting component can the elasticity vaulting pole in advance to realize supporting to the vaulting pole in advance. Because the pre-supporting rod and the elastic supporting component are not fixedly connected but supported through the elastic abutting effect, when the pipe material belt passes through the pre-supporting rod, the elastic supporting component can be forced to retreat relative to the pre-supporting rod, so that a gap for the pipe material belt to pass through is formed between the elastic supporting component and the pre-supporting rod. So, before the film cutting mechanism cuts the pipe material strip, the pre-supporting rod can prop open the pipe material strip to avoid the inner wall adhesion. Therefore, the probability that the cut sheet material is flat is reduced, and when the cutting method is used for cutting the thermal shrinkage film, the cutting yield can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of a tube cutting device according to a preferred embodiment of the present invention;

FIG. 2 is a right side view of the pipe cutting apparatus of FIG. 1;

FIG. 3 is a front view of a pre-support mechanism of the pipe cutting apparatus shown in FIG. 1;

FIG. 4 is a schematic structural diagram of a film cutting mechanism in the tube cutting device shown in FIG. 1;

FIG. 5 is a top view of the film cutting mechanism of FIG. 4;

FIG. 6 is a schematic structural diagram of a film splicing mechanism in the tube cutting device shown in FIG. 1;

fig. 7 is a top view of the film splicing mechanism shown in fig. 6.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1 and 2, a tube cutting device 10 according to a preferred embodiment of the present invention includes a pre-supporting mechanism 100, a film-drawing mechanism 200, and a film-cutting mechanism 300.

The tube cutting device 10 is capable of sequentially cutting a continuous strip of tube material (not shown), which may be a heat shrinkable film, into a plurality of preset lengths of sheet material. The tape pre-supporting mechanism 100, the film pulling mechanism 200 and the film cutting mechanism 300 may be disposed on the frame 500, or may be disposed on a workbench (not shown) of a battery production line. The pre-supporting mechanism 100, the film drawing mechanism 200 and the film cutting mechanism 300 are sequentially arranged, the film drawing mechanism 200 is arranged at the downstream of the pre-supporting mechanism 100, and the film cutting mechanism 300 is arranged at the downstream of the film drawing mechanism 200.

Referring to fig. 3, the pre-supporting mechanism 100 includes a guide plate 110, a pre-supporting rod 120 and an elastic supporting component 130. The elastic support member 130 is installed at the guide plate 110, and the elastic support member 130 can clamp the pre-support bar 120. The guide plate 110 is supported and fixed to the frame 500 by screws. The pre-support rod 120 has a long bar shape, and the elastic support member 130 can hold the pre-support rod 120 from the width direction of the pre-support rod 120, i.e., the left and right direction shown in fig. 3, so as to lift the pre-support rod 120.

The strip of tube material can be transported by the film conveyor 30 towards the pre-support means 100. The pipe material belt is a hollow structure and can be sleeved on the pre-support rod 120. The pre-support rod 120 is a long bar and can extend in the up-and-down direction. The ends of the pre-struts 120 may be provided with a wedge or ball shape to facilitate nesting of the strip of tubing material. Since the pre-support rods 120 and the elastic support assembly 130 are not fixedly connected but supported by the elastic support, the tube material can pass through the pre-support rods 120. Specifically, as the band of tube material passes through the pre-spacer 120, the elastic support member 130 can be forced to retract relative to the pre-spacer 120, thereby forming a gap between the elastic support member 130 and the pre-spacer 120 through which the band of tube material can pass. At the same time, the supporting force of the elastic support assembly 130 can still be transmitted to the pre-support pole 120 through the tube material strip, thereby maintaining the support of the pre-support pole 120 and thus lifting up the pre-support pole 120.

In this manner, the film drawing mechanism 200 is able to draw the strip of tube material through the pre-tensioning rod 120 at a preset speed; and the film cutting mechanism 300 can sequentially cut the tube material strip pulled out by the film pulling mechanism 200 to obtain a plurality of preset length of sheet materials (not shown). Moreover, by adjusting the film drawing speed of the film drawing mechanism 200 and the cutting speed of the film cutting mechanism 300, the length of the cut sheet material can be accurately adjusted.

The pre-struts 120 are able to spread the passing strip of tube material to avoid sticking of the inner walls. Therefore, the probability that the cut sheet material is flat is reduced, and when the cutting method is used for cutting the thermal shrinkage film, the cutting yield can be improved.

In this embodiment, two bearings 121 are disposed on both sides of the pre-support rod 120 in the width direction, and the two bearings 121 located on the same side are disposed at intervals along the length direction of the pre-support rod 120, that is, in the vertical direction shown in fig. 3. The bearing 121 is rotatably disposed on the pre-support rod 120 through a rotation shaft, and the rotation shaft extends generally perpendicular to the length direction and the width direction of the pre-support rod 120, i.e. along the direction perpendicular to the plane of the drawing shown in fig. 3.

Further, the elastic supporting assembly 130 includes a first roller 131 and a second roller 132, in the width direction of the pre-supporting rod 120, the first roller 131 and the second roller 132 respectively abut against the two bearings 121 on the two sides of the pre-supporting rod 120, and at least one of the first roller 131 and the second roller 132 elastically abuts against the bearing 121.

The first roller 131 and the second roller 132 can rotate, and the rotation axis of the first roller is the same as the rotation axis of the bearing 121. Referring to fig. 3, the first roller 131 can be abutted against the two bearings 121 on the left side of the pre-supporting rod 120 from left to right, and the second roller 132 is abutted against the two bearings 121 on the right side of the pre-supporting rod 120 from right to left. The band of pipe material will pass between the first roller 131 and the bearing 121 and between the second roller 132 and the bearing 121 as it passes through the pre-spacer 120. Also, the first roller 131, the second roller 132, and the bearing 121 can roll along the surface of the tube material strip, so that abrasion of the surface of the tube material strip can be reduced.

More specifically, the first roller 131 in this embodiment is fixedly disposed in the width direction of the pre-support rod 120, and the second roller 132 elastically floats in the width direction of the pre-support rod 120. Thus, as the strip of tube material passes through the pre-spacer 120, the pre-spacer 120 and the second roller 132 will be forced to move a certain distance to the right, thereby creating a gap through which the strip of tube material passes.

Moreover, an inner concave area can be formed between the two bearings 121 arranged at intervals, so that the pre-support rod 120 can be better limited by matching with the first roller 131 and the second roller 132, the pre-support rod 120 is prevented from moving downstream along with the passing pipe material belt, and the stability of the elastic support assembly 130 for supporting the pre-support rod 120 is ensured.

Further, in the present embodiment, the elastic supporting assembly 130 includes a mounting plate 133 and a first elastic member 134, the mounting plate 133 can be slidably mounted on the guide plate 110 along the width direction of the pre-supporting rod 120, the first roller 131 is rotatably mounted on the guide plate 110, the second roller 132 is rotatably mounted on the mounting plate 133, and the first elastic member 134 provides an elastic force to the mounting plate 133, so that the second roller 132 elastically abuts against the bearing 121.

Specifically, the first elastic member 134 may be a pull-up spring. The elastic support assembly 130 further includes an L-shaped adjusting bracket 135, wherein the middle portion of the adjusting bracket 135 is rotatably mounted on the guide plate 110, and two ends of the adjusting bracket 135 are respectively hinged to the mounting plate 133 and the first elastic member 134. When the material pipe belt passes through the pre-supporting rod 120, the material pipe belt forces the second roller 132 and the mounting plate 133 to move rightward, thereby pushing the adjusting bracket 135 to rotate counterclockwise and pulling the first elastic member 134 upward. The first elastic member 134 can generate an elastic force for restoring the adjusting bracket 135, so that the second roller 132 can be pressed against the bearing 121 to the left.

Referring to fig. 1 and fig. 2 again, in the present embodiment, the film pulling mechanism 200 includes a film pulling plate 210, a driving wheel 220, a driven wheel 230, a holding driving member 240 and a first motor 250.

The drawing plate 210 can be fixed to the frame 500, and the drawing plate 210 is formed with a material passage 211 through which the tube material strip passes. The material channel 211 is in a strip shape, and can limit and guide the pipe material belt. The driving wheel 220 and the driven wheel 230 are respectively disposed on opposite sides of the film drawing plate 210. The abutting driving member 240 is in transmission connection with the driven wheel 230, and can drive the driven wheel 230 to approach the driving wheel 220, so as to abut the tube material belt passing through the material passage 211 against the driving wheel 220. The holding driving member 240 may be a cylinder, and the driven wheel 230 may be directly mounted on a piston rod of the cylinder.

The first motor 250 is in transmission connection with the driving wheel 220 and drives the driving wheel 220 to rotate. When the film drawing operation is performed, the driven wheel 230 firstly moves to abut against the driving wheel 220 under the action of the abutting driving piece 240, and the tube material belt passing through the material channel 211 is clamped between the driving wheel 220 and the driven wheel 230; then, the first motor 250 drives the driving wheel 220 to rotate, so that the tube material belt can be stretched to a certain length under the action of friction force and conveyed downstream to the film cutting mechanism 300. The film drawing speed of the film drawing mechanism 200 can be controlled by the first motor 250, so that the film drawing mechanism can be conveniently matched with the film cutting mechanism 300 to cut a sheet material with a preset length.

Referring to fig. 4 and 5, in the present embodiment, the film cutting mechanism 300 includes a fixing plate 310, a fixed knife 320, a movable knife 330 and a cutting driving assembly 340.

The fixing plate 310 may be fixed to the frame 500 by screws for supporting the film cutting mechanism 300. The stationary blade 320 is fixed to the fixed plate 310, and the movable blade 330 is slidably mounted to the fixed plate 310. Specifically, the movable blade 330 may be mounted on the fixing plate 310 through a blade bracket 350, and the blade bracket 350 may slide along the fixing plate 310, so as to drive the movable blade 330 to move relative to the fixed blade 320 to complete the cutting operation.

The cutting drive assembly 340 is capable of driving the moving blade 330 in a reciprocating motion to cut the strip of tubing material. Specifically, in the present embodiment, the cutting driving assembly 340 includes a second motor 341, a cam 342, and a connecting rod 343.

The cam 342 is disposed at a rotating end of the second motor 341, and the second motor 341 can drive the cam 342 to rotate. Among them, the cam 342 has a cam groove 3421. The connecting rod 343 has one end rotatably mounted to the movable blade 330 and the other end provided with a follower (not shown) slidably disposed in the cam groove 3421. The follower may employ a rolling bearing capable of rolling while sliding along the cam groove 3421. As the cam 342 rotates, the follower moves in the cam groove 3421 to swing the connecting rod 343, thereby moving the blade holder 350 and the movable blade 330 in a reciprocating motion. The second motor 341 can control the rotation speed of the cam 342, so as to control the cutting speed of the movable blade 330. Thus, the second motor 341 can be controlled to effect a fixed length cut of the strip of tube material according to the desired length of the sheet material.

Further, in this embodiment, the cutting drive assembly 340 further includes a second elastic member 344, and the second elastic member 344 provides an elastic force to the connecting rod 343 to make the follower abut against the inner wall of the cam groove 3421. The second elastic member 344 may be a pull-up spring, and both ends of the second elastic member are connected to the frame 500 and the connecting rod 343, respectively. The resilient force of the second resilient member 344 enables the follower to be closely attached to the inner wall of the cam groove 3421, so that the follower can be moved exactly along the curve of the inner wall of the cam groove 3421, thereby ensuring the accuracy of the cut-to-length.

Referring to fig. 6 and fig. 7, in the present embodiment, the tube cutting device 100 further includes a film receiving mechanism 400, and the film receiving mechanism 400 includes a rotating assembly 410, a rotating disc 420 and a plurality of carriers 430.

The film receiving mechanism 400 is arranged below the film cutting mechanism 300, and can receive a plurality of pieces of sheet materials obtained by cutting by the film cutting mechanism 300 and sequentially convey the pieces of sheet materials to the next station.

The rotary disk 420 is disposed at the rotating end of the rotating component 410, and the rotating component 410 can drive the rotary disk 420 to rotate around the axis. Specifically, in the present embodiment, the rotating assembly 410 includes a fixing shaft 411 and a rotating shaft 412, the fixing shaft 411 is a hollow structure, the rotating shaft 412 is rotatably disposed through the fixing shaft 411, the rotating disc 420 is fixed at one end of the rotating shaft 412, and a driving wheel 413 is disposed at the other end of the rotating shaft 412. The driving wheel 413 can be a pulley or a gear, and can be in driving connection with an external driving structure, so as to drive the rotating shaft 412 and the rotary disc 420 to rotate.

The plurality of carriers 430 are disposed at equal intervals along the circumferential direction of the rotary disk 420. Also, as the rotary disk 420 rotates, the plurality of carriers 430 can sequentially pass through the output end of the film cutting mechanism 300 and receive the sheet. It can be seen that by driving the rotary disc 420 to rotate, the continuous blanking and transferring of the sheet materials can be realized, so as to ensure the continuity of the operation of the pipe cutting device 10.

Specifically, in the present embodiment, each of the carriers 430 is formed with a passage (not shown) through which gas flows and an adsorption hole (not shown) communicating with the passage, and a negative pressure can be formed on the side surface of the carrier 430 through the passage and the adsorption hole to adsorb the received sheet.

The channels on the carrier 430 can communicate with a negative pressure device, thereby creating a negative pressure on the sides of the carrier 430. The web output from the slitting mechanism 300 generally extends in the up-down direction as shown in fig. 6. Since the carrier 430 can adsorb the received sheet material to the side, the sheet material does not need to be adjusted in direction during the transfer from the film cutting mechanism 300 to the carrier 430, thereby facilitating the transfer.

The pipe cutting device 10 is provided with the pre-supporting mechanism 100, and the elastic supporting component 130 can clamp the pre-supporting rod 120, so as to support the pre-supporting rod 120. Since the pre-supporting rod 120 and the elastic supporting component 130 are not fixedly connected but supported by the elastic abutting effect, when the tube material passes through the pre-supporting rod 120, the elastic supporting component 130 can be forced to retreat relative to the pre-supporting rod 120, so that a gap for the tube material to pass through is formed between the elastic supporting component 130 and the pre-supporting rod 120. As such, the pre-brace 120 can brace the strip of tube material apart to avoid inner wall sticking before the film cutting mechanism 300 cuts the strip of tube material. Therefore, the probability that the cut sheet material is flat is reduced, and when the cutting method is used for cutting the thermal shrinkage film, the cutting yield can be improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A pipe cutting apparatus, comprising:

2. The pipe cutting device as claimed in claim 1, wherein two bearings are disposed on two sides of the pre-supporting rod in the width direction, the two bearings located on the same side are spaced apart along the length direction of the pre-supporting rod, the elastic support assembly includes a first roller and a second roller, the first roller and the second roller respectively abut against the two bearings on two sides of the pre-supporting rod in the width direction of the pre-supporting rod, and at least one of the first roller and the second roller elastically abuts against the bearing.

3. The pipe cutting apparatus as claimed in claim 2, wherein the elastic support assembly includes a mounting plate and a first elastic member, the mounting plate is slidably mounted on the guide plate along a width direction of the pre-supporting rod, the first roller is rotatably mounted on the guide plate, the second roller is rotatably mounted on the mounting plate, and the first elastic member provides an elastic force to the mounting plate, so that the second roller elastically abuts against the bearing.

4. The pipe cutting apparatus of claim 1, wherein the film pulling mechanism comprises:

5. The pipe cutting apparatus of claim 1, wherein the film cutting mechanism comprises:

a fixing plate;

the fixed cutter is fixed on the fixing plate;

the movable cutter is slidably arranged on the fixed plate; and

6. The pipe cutting apparatus of claim 5 wherein the cutting drive assembly comprises:

a second motor;

7. The pipe cutting apparatus of claim 6 wherein the cutting drive assembly further comprises a second resilient member providing a resilient force to the connecting rod to urge the follower against an inner wall of the cam slot.

8. The pipe cutting apparatus of claim 1, further comprising a film splicing mechanism, the film splicing mechanism comprising:

a rotating assembly;

the rotary disc is arranged at the rotating end of the rotating assembly, and the rotating assembly can drive the rotary disc to rotate around an axis;

9. The pipe cutting device according to claim 8, wherein the rotating assembly comprises a fixed shaft and a rotating shaft, the fixed shaft is a hollow structure, the rotating shaft is rotatably arranged through the fixed shaft, the rotary disc is fixed at one end of the rotating shaft, and a driving wheel is arranged at the other end of the rotating shaft.

10. The pipe cutting apparatus according to claim 8, wherein each of said carriers has a passage for gas to flow through and an adsorption hole communicating with said passage, and a negative pressure is formed on a side surface of said carrier through said passage and said adsorption hole to adsorb said received sheet.