PVC film cutting equipment

Abstract

The present application relates to the technical field of PVC films, and provides a PVC film cutting device, which includes: a support portion; a conveying and cutting portion, which is arranged on the support portion and is used to convey the PVC film along a first direction and cut the PVC film along a second direction; and two clamping, conveying and cutting portions, which are arranged on the support portion and are respectively located on both sides of the support portion along the second direction, the clamping, conveying and cutting portion including two clamping and cutting portions which are relatively arranged on the support portion along the direction of gravity, the clamping and cutting portion including a clamping and conveying device and a plurality of stretching and cutting devices, the clamping and conveying device being arranged on the support portion, and the stretching and cutting device being arranged on the clamping and conveying device. The PVC film cutting device provided by the present application can improve the technical problem in the related art that the PVC film stretched along the length direction is prone to ribs or uneven tightness when being cut.

Description

Technical Field

[0001] The present application relates to the technical field of PVC films, and in particular to a PVC film cutting device. Background Art

[0002] PVC film cutting equipment is a special equipment used to cut PVC film materials.

[0003] In the related art, the existing PVC film cutting equipment usually receives the PVC film produced by the PVC film production equipment at a fixed traction speed. However, due to the production materials or production processes, the production speed of the PVC film production equipment is prone to fluctuations when producing the PVC film. When the traction speed of the PVC film cutting equipment is greater than the production speed of the PVC film production equipment, the PVC film is stretched along the length direction of the PVC film. The stretched PVC film is prone to ribs when cut by the PVC film cutting equipment (when the film is stretched in the length direction, if the thickness of a certain part is thin, and the tension of the film cutting equipment is constant during slitting, this may cause uneven force on the film and produce fine soft stripes) and uneven tightness (because the film may have uneven thickness during the stretching process, the small rolls after cutting may have uneven tightness). Summary of the invention

[0004] The embodiment of the present application provides a PVC film cutting device, which can improve the technical problem in the related art that a PVC film stretched along the length direction is prone to cracking or uneven tightness when being cut.

[0005] The embodiment of the present application provides a PVC film cutting device, comprising:

[0006] Supporting part;

[0007] a conveying and cutting portion, disposed on the supporting portion, for conveying the PVC film along a first direction and cutting the PVC film along a second direction, the conveying and cutting portion having a first conveying surface in contact with the PVC film; and

[0008] Two clamping, conveying and cutting parts are arranged on the support part and are respectively located on both sides of the support part along the second direction. The clamping, conveying and cutting parts include two clamping and cutting parts relatively arranged on the support part along the gravity direction. The clamping and cutting parts include a clamping and conveying device and a plurality of stretching and cutting devices. The clamping and conveying device is arranged on the support part. The stretching and cutting device is arranged on the clamping and conveying device. Each of the stretching and cutting devices of one of the clamping and cutting parts corresponds to each of the stretching and cutting devices of another clamping and cutting part arranged relatively. The clamping and conveying device is used to drive the stretching and cutting device to move along the first direction. The stretching and cutting device is used to contact the PVC film together with the corresponding stretching and cutting device to clamp the PVC film, stretch the PVC film along the second direction, and cut the PVC film.

[0009] Among them, the first direction is the conveying direction of the PVC film starting from the output end of the PVC film production equipment, and sequentially passes through the input end of the clamping and cutting part, the input end of the conveying and cutting part, the output end of the conveying and cutting part and the output end of the clamping and cutting part, and the second direction is a direction perpendicular to the first direction and perpendicular to the direction of gravity.

[0010] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0011] The PVC film cutting device provided in the embodiment of the present application pulls and conveys the PVC film through the conveying and cutting part, and cuts the PVC film along the second direction when the PVC film reaches a preset length, and forms a first incision that penetrates the PVC film in the middle of the PVC film. The stretching and cutting devices arranged relatively along the gravity direction are close to each other and contact the PVC film together to clamp the two sides of the PVC film along the second direction. When the PVC film is clamped by the relatively arranged stretching and cutting devices, the stretching and cutting devices are driven to move along the first direction by the clamping and conveying device, thereby driving the PVC film to move along the first direction. When the PVC film is stretched along the length direction of the PVC film, the relatively arranged stretching and cutting devices located on both sides of the conveying and cutting part along the second direction and clamping the two sides of the PVC film respectively move away from each other, thereby driving the clamped PVC film to stretch along the second direction, so that the surface of the PVC film passes through the conveying and cutting part in a flat state and is cut by the conveying and cutting part, so as to improve the problem of ribs or uneven tightness of the PVC film. When the conveying and cutting part cuts the PVC film to form a first incision on the PVC film, the stretching and cutting devices located on both sides of the first incision along the second direction cut the PVC film when the first incision moves to the rear of the conveying and cutting part along the first direction, and second incisions penetrating the PVC film are respectively formed on both sides of the PVC film, and the second incisions are connected to the first incision and the edge of the PVC film, so that the PVC film is cut, thereby realizing quantitative cutting of the PVC film. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 A schematic diagram of the structure of a PVC film cutting device provided in an embodiment of the present application;

[0014] Figure 2 A schematic diagram of the structure of the conveying and cutting unit provided in an embodiment of the present application;

[0015] Figure 3 A partial cross-sectional structural schematic diagram of a conveying and cutting portion provided in an embodiment of the present application;

[0016] Figure 4 A schematic diagram of the structure of the clamping and cutting portion provided in an embodiment of the present application;

[0017] Figure 5 It is a schematic diagram of the structure of two corresponding stretching and cutting devices;

[0018] Figure 6 This is a schematic cross-sectional structural diagram of the stretching and cutting device provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are:

[0020] 100, PVC film cutting equipment; 10, support part; 20, conveying and cutting part; 21, conveying device; 211, cutting groove; 22, conveying and cutting device; 221, conveying and cutting frame; 222, conveying shaft; 2221, conveying accommodating space; 2222, guide knife groove; 223, rotating driving device; 224, cutting mechanism; 2241, first cutting driving member; 2242, first cutting member; 30, clamping and conveying and cutting part; 40, clamping and cutting part; 41, clamping and conveying device; 411, clamping and conveying frame; 412, conveying Feeding drive device; 413, driving wheel; 414, driven wheel; 415, transmission belt; 42, stretching and cutting device; 421, clamping and stretching device; 4211, stretching mechanism; 42111, stretching accommodating member; 42112, stretching driving member; 4212, resistance mechanism; 42121, resistance accommodating member; 42122, resistance member; 42123, elastic member; 422, rotating cutting device; 4221, rotating driving member; 4222, rotating connecting member; 4223, second cutting driving member; 4224, second cutting member. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0027] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] PVC film cutting equipment is a special equipment used to cut PVC film materials.

[0029] In the related art, the existing PVC film cutting equipment usually receives the PVC film produced by the PVC film production equipment at a fixed traction speed. However, due to the production materials or production processes, the production speed of the PVC film production equipment is prone to fluctuations when producing the PVC film. When the traction speed of the PVC film cutting equipment is greater than the production speed of the PVC film production equipment, the PVC film is stretched along the length direction of the PVC film. The stretched PVC film is prone to ribs when cut by the PVC film cutting equipment (when the film is stretched in the length direction, if the thickness of a certain part is thin, and the tension of the film cutting equipment is constant during slitting, this may cause uneven force on the film and produce fine soft stripes) and uneven tightness (because the film may have uneven thickness during the stretching process, the small rolls after cutting may have uneven tightness).

[0030] Based on this, in order to improve the technical problem in the related art that the PVC film stretched along the length direction is prone to cracking or uneven tightness when being cut, the embodiments of the present application provide the following solution.

[0031] See also Figure 1 The embodiment of the present application provides a PVC film cutting device 100, which is used to be connected to the output end of the PVC film production device. The PVC film cutting device 100 includes a support part 10, a conveying and cutting part 20, two clamping and conveying cutting parts 30, two clamping and cutting parts 40, a clamping and conveying device 41 and a plurality of stretching and cutting devices 42, wherein:

[0032] The conveying and cutting part 20 is disposed on the supporting part 10 and is used for conveying the PVC film along a first direction and cutting the PVC film along a second direction. The conveying and cutting part 20 has a first conveying surface in contact with the PVC film.

[0033] Two clamping, conveying and cutting parts 30 are arranged on the support part 10 and are respectively located on both sides of the support part 10 along the second direction. The clamping, conveying and cutting part 30 includes two clamping and cutting parts 40 relatively arranged on the support part 10 along the gravity direction. The clamping and cutting part 40 includes a clamping and conveying device 41 and a plurality of stretching and cutting devices 42. The clamping and conveying device 41 is arranged on the support part 10, and the stretching and cutting device 42 is arranged on the clamping and conveying device 41. Each clamping and conveying device 41 corresponds to a stretching and cutting device 42 on the relatively arranged clamping and cutting part 40. The clamping and conveying device 41 is used to drive the stretching and cutting device 42 to move along the first direction. The stretching and cutting device 42 is used to contact the PVC film together with the corresponding stretching and cutting device 42 to clamp the PVC film, stretch the PVC film along the second direction, and cut the PVC film.

[0034] Among them, the first direction is the conveying direction of the PVC film starting from the output end of the PVC film production equipment, passing through the input end of the clamping and cutting part 40, the input end of the conveying and cutting part 20, the output end of the conveying and cutting part 20 and the output end of the clamping and cutting part 40 in sequence, and the second direction is a direction perpendicular to the first direction and perpendicular to the direction of gravity.

[0035] It can be understood that the PVC film production equipment is a device that can produce PVC film, for example, the PVC film production equipment can be a PVC film extruder, a PVC film stretching machine, etc., but not limited thereto. The support part 10 is a support frame that can play a supporting role, for example, the support part 10 can be an aluminum support frame, a copper support frame, etc., but not limited thereto.

[0036] The conveying and cutting section 20 is a device capable of pulling and cutting the PVC film. For example, the conveying and cutting section 20 may include a pulling device (parallel clamp roller pulling machine, air floating roller pulling machine, etc.) and a cutting device (automatic cutting machine, strip cutting machine, etc.), but is not limited thereto.

[0037] The clamping, conveying and cutting part 30 is a device that can clamp and move the PVC film, and cut the PVC film. For example, the clamping, conveying and cutting part 30 may include a clamping part (pneumatic clamp, vacuum suction cup clamp, etc.), a moving part (double-acting cylinder, rodless cylinder, etc.) and a cutting part (automatic cutting machine, strip cutting machine, etc.), but is not limited to this. The clamping part is arranged on the moving part, and the cutting part is arranged on the clamping part. The clamping part is used to clamp the PVC film, the moving part is used to drive the clamping part to move, and the cutting part is used to cut the PVC film.

[0038] The clamping and cutting part 40 is a device capable of clamping and cutting the PVC film. For example, the clamping and cutting part 40 may include a clamping part (pneumatic clamp, vacuum suction cup clamp, etc.) and a cutting part (automatic cutting machine, strip cutting machine, etc.), but is not limited thereto.

[0039] The clamping and conveying device 41 is a device that can drive the stretching and cutting device 42 to move. For example, the clamping and conveying device 41 can be a flat belt transmission device, a belt conveyor, etc., but is not limited thereto.

[0040] The stretching and cutting device 42 is a device that can resist and stretch the PVC film, and cut the PVC film. For example, the stretching and cutting device 42 may include a resisting part (electrostatic adsorption device, pneumatic clamp, etc.), a moving part (double-acting cylinder, rodless cylinder, etc.) and a cutting part (automatic cutting machine, strip cutting machine, etc.), but is not limited to this. The resisting part is arranged on the moving part, and the cutting part is arranged on the resisting part. The resisting part is used to resist the PVC film, the moving part is used to drive the resisting part to approach or move away from the PVC film, and the cutting part is used to cut the PVC film.

[0041] As can be seen from the above, the PVC film cutting device 100 provided in the embodiment of the present application pulls and conveys the PVC film through the conveying and cutting part 20, and cuts the PVC film along the second direction when the PVC film reaches a preset length, and forms a first incision that penetrates the PVC film in the middle of the PVC film. The stretching and cutting devices 42 arranged relatively along the gravity direction are close to each other and jointly resist the PVC film to clamp the two sides of the PVC film along the second direction. When the PVC film is clamped by the relatively arranged stretching and cutting devices 42, the stretching and cutting devices 42 are driven to move along the first direction by the clamping and conveying device 41, thereby driving the PVC film to move along the first direction. When the PVC film is stretched along the length direction of the PVC film, the relatively arranged stretching and cutting devices 42 located on both sides of the conveying and cutting part 20 along the second direction and clamping the two sides of the PVC film respectively move away from each other, thereby driving the clamped PVC film to stretch along the second direction, so that the surface of the PVC film passes through the conveying and cutting part 20 in a flat state and is cut by the conveying and cutting part 20, so as to improve the problem of ribs or uneven tightness of the PVC film. When the conveying and cutting part 20 cuts the PVC film to form a first incision on the PVC film, the stretching and cutting devices 42 located on both sides of the first incision along the second direction cut the PVC film when the first incision moves to the rear of the conveying and cutting part 20 along the first direction, and second incisions penetrating the PVC film are formed on both sides of the PVC film respectively, and the second incisions are connected to the first incision and the edge of the PVC film, so that the PVC film is cut, thereby realizing quantitative cutting of the PVC film.

[0042] In some embodiments, please refer to Figure 1 to Figure 2 The conveying and cutting section 20 includes a conveying device 21 and a conveying and cutting device 22 .

[0043] The conveying device 21 is disposed on the supporting portion 10 . The conveying device 21 has a first conveying surface. A cutting groove 211 recessed toward the inside of the conveying device 21 is formed on the first conveying surface.

[0044] The conveying and cutting device 22 is disposed on the support portion 10 and is located directly above the conveying device 21 . The conveying and cutting device 22 has a second conveying surface in contact with the first conveying surface. The conveying and cutting device 22 is used to cut the PVC film along the second direction.

[0045] The PVC film can be located between the conveying device 21 and the conveying and cutting device 22 and is simultaneously contacted by the first conveying surface and the second conveying surface, so that the conveying device 21 and the conveying and cutting device 22 can jointly convey the PVC film along the first direction.

[0046] It can be understood that the conveying device 21 is a device that can contact the PVC film together with the conveying and cutting device 22 to pull the PVC film to move along the first direction. For example, the conveying device 21 can be a guide roller, a pulling roller, etc., but is not limited thereto. The cutting groove 211 can be a groove that is opened along the second direction and is recessed into the inside of the conveying device 21.

[0047] The conveying and cutting device 22 is a device that can contact the PVC film together with the conveying device 21 to pull the PVC film to move along the first direction, and cut the PVC film along the cutting groove 211. For example, the conveying and cutting device 22 may include a roller (guide roller, traction roller, etc.), a driving device (stepping motor, servo motor, etc.) and a cutting part (laser cutter, automatic cutter, etc.), but is not limited to this. The roller is rotatably arranged on the support part 10 and is located directly below the conveying device 21, and is in rolling friction contact with the conveying device 21. The driving device is connected to the roller in a transmission connection. The driving device is used to drive the roller to rotate to drive the PVC film to move, and the cutting part is used to cut the PVC film along the second direction.

[0048] In this configuration, the conveying device 21 and the conveying and cutting device 22 both contact the PVC film and convey the PVC film in the first direction to pull the PVC film. By providing a cutting groove 211 on the conveying device 21 and cutting the PVC film along the cutting groove 211 by the conveying and cutting device 22, the PVC film can be cut while the PVC film is continuously conveyed, thereby ensuring work efficiency.

[0049] In some embodiments, see Figures 2 to 3 The conveying and cutting device 22 includes a conveying and cutting frame 221, a conveying shaft 222, a rotating driving device 223 and a cutting mechanism 224.

[0050] The conveying and cutting frame 221 is disposed on the supporting portion 10 .

[0051] The conveying shaft 222 is rotatably arranged on a side of the conveying cutting frame 221 close to the conveying device 21 and is located directly above the conveying device 21. The conveying shaft 222 has a second conveying surface. The conveying shaft 222 has a conveying accommodating space 2221. A guide knife groove 2222 is opened on the second conveying surface, which is connected to the conveying accommodating space 2221 and corresponds to the cutting groove 211.

[0052] The rotation driving device 223 is disposed on the conveying and cutting frame 221 and is in transmission connection with the conveying shaft 222 . The rotation driving device 223 is used for driving the conveying shaft 222 to rotate.

[0053] The cutting mechanism 224 is located in the conveying accommodating space 2221 and is arranged on the conveying shaft 222 and corresponds to the guide knife groove 2222. The cutting mechanism 224 is used to approach the conveying device 21 through the guide knife groove 2222 and is partially located in the cutting groove 211 to cut the PVC film along the second direction.

[0054] It can be understood that the conveying and cutting frame 221 is a support frame, for example, the conveying and cutting frame 221 can be an aluminum support frame, a copper support frame, etc., but not limited to this. The conveying shaft 222 is a roller shaft, for example, the conveying shaft 222 can be a guide roller, a traction roller, etc., but not limited to this. The rotation drive device 223 is a drive device capable of driving the conveying shaft 222 to rotate, for example, the rotation drive device 223 can be a stepping motor, a servo motor, etc., but not limited to this. The cutting mechanism 224 is a device that can cut a PVC film through the guide knife groove 2222 partly located in the cutting groove 211, for example, the cutting mechanism 224 can be a laser cutting machine, an automatic cutting machine, etc., but not limited to this. The guide knife groove 2222 can be a connecting groove opened along the second direction.

[0055] In this arrangement, the conveying shaft 222 contacts the PVC film, and the PVC film contacts the conveying device 21 at the same time, and then the conveying shaft 222 is driven to rotate by the rotary drive device 223, thereby driving the PVC film to move along the first direction. When the PVC film needs to be cut, the cutting mechanism 224 approaches the conveying device 21 through the guide groove 2222 and is partially located in the cutting groove 211 to cut the PVC film along the second direction, thereby achieving quantitative cutting of the PVC film. By arranging the cutting mechanism 224 on the conveying shaft 222, the PVC film can be cut by the cutting mechanism 22 while being conveyed by the conveying shaft 222, thereby improving work efficiency.

[0056] In some embodiments, see Figure 3 The cutting mechanism 224 includes a first cutting driving member 2241 and a first cutting member 2242 .

[0057] The first cutting driving member 2241 is located in the conveying accommodating space 2221 and is disposed on the conveying shaft 222 .

[0058] The first cutting member 2242 is located in the conveying accommodating space 2221 and is connected to the power output end of the first cutting driving member 2241 . The first cutting member 2242 corresponds to the guide knife groove 2222 .

[0059] The first cutting drive member 2241 is used to drive the first cutting member 2242 to approach the conveying device 21 along the guide knife groove 2222 and be partially located in the cutting groove 211 when the depth direction of the guide knife groove 2222 is parallel to the depth direction of the cutting groove 211 .

[0060] It can be understood that the first cutting drive member 2241 is a driving device capable of driving the first cutting member 2242 to approach or move away from the cutting groove 211. For example, the first cutting drive member 2241 can be a double-acting cylinder, a rodless cylinder, etc., but not limited thereto. The first cutting member 2242 is a cutting blade capable of cutting a PVC film. For example, the PVC film can be a straight tip blade, a water drop tip blade, etc., but not limited thereto.

[0061] In this way, when the depth direction of the guide knife groove 2222 is parallel to the depth direction of the cutting groove 211 and the distance between the guide knife groove 2222 and the cutting groove 211 is the shortest, the first cutting drive member 2241 can drive the first cutting member 2242 through the guide knife groove 2222 to approach and abut against the inner wall of the cutting groove 211 to cut the PVC film.

[0062] In some embodiments, see Figure 4 The clamping and conveying device 41 includes a clamping and conveying frame 411, a conveying driving device 412, a driving wheel 413, a driven wheel 414 and a transmission belt 415.

[0063] The clamping conveying frame 411 is disposed on the supporting portion 10 and is located beside the conveying and cutting portion 20 along the second direction.

[0064] The conveying driving device 412 is disposed on the clamping conveying frame.

[0065] The driving wheel 413 is rotatably disposed on the clamping conveying frame and is connected to the power output end of the conveying driving device 412 .

[0066] The driven wheel 414 is rotatably disposed on a side of the clamping conveying frame 411 away from the driving wheel 413 .

[0067] The transmission belt 415 is connected to the driving wheel 413 and the driven wheel 414 in transmission.

[0068] The stretching and cutting device 42 is disposed on the transmission belt 415 , and the conveying driving device 412 is used to drive the driving wheel 413 to rotate so as to drive the transmission belt 415 to move along the first direction.

[0069] It can be understood that the clamping conveyor frame 411 is a support frame, for example, the clamping conveyor frame 411 can be an aluminum support frame, a copper support frame, etc., but is not limited to this. The conveying drive device 412 is a drive device that can drive the driving wheel 413 to rotate. For example, the conveying drive device 412 can be a stepping motor, a servo motor, etc., but is not limited to this. The driving wheel 413 is a wheel, for example, the driving wheel 413 can be a gear, a pulley, etc., but is not limited to this. The driven wheel 414 is a wheel, for example, the driving wheel 413 can be a gear, a pulley, etc., but is not limited to this. The transmission belt 415 is a belt, for example, the transmission belt 415 can be a rubber transmission belt, a plastic transmission belt, etc., but is not limited to this.

[0070] In this arrangement, when the stretching and cutting devices 42 located on both sides of the PVC film and the corresponding stretching and cutting devices 42 jointly contact the PVC film, the conveying drive device 412 drives the driving wheel 413 to rotate, thereby driving the transmission belt 415 to move along the first direction and driving the driven wheel 414 to rotate, thereby driving the stretching and cutting devices 42 to move along the first direction. At the same time, the transmission belt 415 connected to the stretching and cutting device 42 corresponding to the stretching and cutting device 42 moves along the first direction at the same speed, thereby driving the PVC film that is jointly contacted and clamped by the two stretching and cutting devices 42 to move along the first direction.

[0071] In some embodiments, see Figures 4 to 6 The stretching and cutting device 42 includes a clamping and stretching device 421 and a rotating cutting device 422 .

[0072] The clamping and stretching device 421 is disposed on the transmission belt 415 , and is used to contact the PVC film together with the clamping and stretching device 421 on the corresponding stretching and cutting device 42 to clamp the PVC film and stretch the PVC film.

[0073] The rotating cutting device 422 is disposed on a side of the clamping and stretching device 421 away from the first conveying surface, and the rotating cutting device 422 is used for cutting the PVC film.

[0074] It can be understood that the clamping and stretching device 421 is a device that can resist and stretch the PVC film. For example, the clamping and stretching device 421 may include a resisting part (electrostatic adsorption device, pneumatic clamp, etc.) and a moving part (double-acting cylinder, rodless cylinder, etc.), but is not limited to this. The moving part can be arranged on the transmission belt 415, and the resisting part is arranged on the power output end of the moving part. The resisting part is used to resist the PVC film, and the moving part is used to drive the PVC film close to or away from the conveying and cutting part 20.

[0075] The rotary cutting device 422 is a cutting mechanism 224 capable of cutting PVC film. For example, the rotary cutting device 422 may be an automatic cutting machine, a strip cutting machine, etc., but is not limited thereto.

[0076] With such arrangement, when the PVC film is located at the input end of the clamping and cutting part 40, the PVC film is clamped by the clamping and stretching devices 421 arranged opposite to each other, and the transmission belt 415 moves along the first direction to drive the clamping and stretching devices 421 arranged opposite to each other to move along the first direction, thereby driving the clamped PVC film to move along the first direction. When the PVC film needs to be stretched along the second direction, the clamping and stretching devices 421 arranged opposite to each other on both sides of the PVC film along the second direction that mutually resist and clamp the PVC film move away from the conveying and cutting part 20 at the same time along the second direction to drive the clamped PVC film to be stretched along the second direction, thereby making the uneven surface of the PVC film due to being stretched along the length direction become flat. When the conveying and cutting part 20 cuts the PVC film and leaves an incision on the PVC film, the rotating cutting devices 422 arranged on both sides of the incision can cut the PVC film and leave an incision on the PVC film that is connected to the incision left by the conveying and cutting part 20 on the PVC film and connected to the edge of the PVC film, thereby cutting the PVC film, thereby realizing quantitative cutting of the PVC film. By arranging the rotating cutting device 422 on the clamping and stretching device 421, the rotating cutting device 422 follows the clamping and stretching device 421 when it is driven by the transmission belt 415, that is, the relative position of the rotating cutting device 422 and the PVC film remains unchanged. When the rotating cutting device 422 is needed to cut the PVC film, the rotating cutting device 422 can cut the PVC film while the PVC film is in a moving state, thereby improving work efficiency.

[0077] In some embodiments, see Figures 4 to 6 The clamping and stretching device 421 includes a stretching mechanism 4211 and a resistance mechanism 4212 .

[0078] The stretching mechanism 4211 is disposed on the transmission belt 415 .

[0079] The resistance mechanism 4212 is disposed on one side of the stretching mechanism 4211 close to the conveying and cutting portion 20 . The resistance mechanism 4212 is used to resist the PVC film together with another corresponding resistance mechanism 4212 to clamp the PVC film.

[0080] The stretching mechanism 4211 is used to drive the conflicting mechanism 4212 away from the conveying and cutting part 20 when the conflicting mechanism 4212 and another corresponding conflicting mechanism 4212 jointly conflict with the PVC film, so as to stretch the PVC film along the second direction.

[0081] It can be understood that the stretching mechanism 4211 is a device capable of driving the resistance mechanism 4212 away from the conveying and cutting part 20. For example, the stretching mechanism 4211 can be a double-acting cylinder, a rodless cylinder, etc., but not limited thereto. The resistance mechanism 4212 is a device capable of resisting the PVC film. For example, the resistance mechanism 4212 can be an electrostatic adsorption device, a pneumatic clamp, etc., but not limited thereto.

[0082] In this way, the two corresponding conflicting mechanisms 4212 mutually conflict with the PVC film to clamp the PVC film. When the two corresponding conflicting mechanisms 4212 mutually conflict with the PVC film and clamp the PVC film, the stretching mechanisms 4211 located on both sides of the PVC film along the second direction and connected to the two corresponding conflicting mechanisms 4212 mutually conflicting with the PVC film can drive the conflicting mechanisms 4212 to simultaneously move away from the conveying and cutting part 20, so as to stretch the PVC film along the second direction and make the surface of the PVC film flat.

[0083] In some embodiments, see Figures 4 to 6 The clamping and stretching device 421 includes a stretching accommodating member 42111 and a stretching driving member 42112 .

[0084] The stretching accommodating member 42111 is disposed on the transmission belt 415, and the accommodating member has a stretching accommodating space.

[0085] The stretching driving member 42112 is located in the stretching accommodating space and is arranged on the accommodating member.

[0086] The resistance mechanism 4212 is connected to the power output end of the stretching driving member 42112, and the stretching driving member 42112 is used to drive the resistance mechanism 4212 to approach or move away from the conveying and cutting part 20 along the second direction.

[0087] It can be understood that the stretching accommodating member 42111 is a shell having a stretching accommodating space, for example, the stretching accommodating member 42111 can be an aluminum shell, a plastic shell, etc., but is not limited thereto. The stretching driving member 42112 is a device that can drive the conflict mechanism 4212 to approach or move away from the conveying and cutting part 20, for example, the stretching driving member 42112 can be a double-acting cylinder, a rodless cylinder, etc., but is not limited thereto.

[0088] In this way, when the two corresponding resistance mechanisms 4212 jointly resist and clamp the PVC film, the two stretching driving members 42112 respectively connected to the two corresponding resistance mechanisms 4212 that jointly resist the PVC film can drive the two corresponding resistance mechanisms 4212 that jointly resist the PVC film to move away from the conveying and cutting part 20 at the same time, so as to stretch the PVC film along the second direction and make the surface of the PVC film flat.

[0089] In some embodiments, see Figures 4 to 6 The interference mechanism 4212 includes an interference accommodating member 42121 , a interference member 42122 and an elastic member 42123 .

[0090] The resistance accommodating member 42121 is located on the side of the stretching mechanism 4211 close to the conveying and cutting part 20, and is connected to the power output end of the stretching driving member 42112. The resistance accommodating member 42121 has a resistance accommodating space, and an opening connected to the resistance accommodating space is provided on the side of the resistance accommodating member 42121 close to the first conveying surface.

[0091] The resistance member 42122 can be movably disposed at one side of the resistance accommodation space close to the first conveying surface, and the resistance member 42122 is used for resisting the PVC film.

[0092] The elastic member 42123 is located in the abutment accommodation space, and two ends of the elastic member 42123 are respectively connected to the abutment member 42122 and the abutment accommodation member 42121 . The elastic member 42123 is used to drive the abutment member 42122 to approach the first conveying surface and abut against the PVC film.

[0093] It can be understood that the resistance accommodating member 42121 is a shell, for example, the resistance accommodating member 42121 can be an aluminum shell, a plastic shell, etc., but not limited thereto. The resistance member 42122 is a block-shaped structure for resisting the PVC film, and the two sides of the resistance member 42122 close to the PVC film along the first direction can have rounded corners, for example, the resistance member 42122 can be a rubber block, a plastic block, etc., but not limited thereto. The elastic member 42123 is a spring, for example, the elastic member 42123 can be a coil spring, a disc spring, etc., but not limited thereto.

[0094] With such arrangement, when the PVC film is located at the input end of the clamping and cutting part 40, the two corresponding abutting members 42122 approach each other along the arc under the drive of the transmission belt 415 and simultaneously abut the upper and lower surfaces of the PVC film, respectively. When the two corresponding abutting members 42122 approach each other, the two corresponding abutting members 42122 abutting the PVC film move into the abutting accommodation space under the action of the mutual force, and simultaneously compress the elastic member 42123 connected to the abutting members 42122. When the relative positions of the two corresponding abutting members 42122 are fixed (the two corresponding abutting members 42122 move along the first direction at the same speed), the two corresponding abutting members 42122 approach each other under the action of the elastic force of the elastic member 42123, so as to firmly clamp the PVC film located between the two corresponding abutting members 42122.

[0095] In some embodiments, see Figures 4 to 6The rotating cutting device 422 includes a rotating driving member 4221, a rotating connecting member 4222, a second cutting driving member 4223 and a second cutting member 4224.

[0096] The rotation driving member 4221 is disposed on a side of the abutting receiving member 42121 away from the first conveying surface.

[0097] The rotating connecting member 4222 is disposed on the rotating driving member 4221 and connected to the rotating shaft of the rotating driving member 4221 .

[0098] The second cutting driving member 4223 is disposed on a side of the rotating connecting member 4222 away from the rotating driving member 4221 .

[0099] The second cutting member 4224 is located on a side of the second cutting driving member 4223 close to the first conveying surface and is connected to a power output end of the second cutting driving member 4223 .

[0100] The rotating driving member 4221 is used to drive the rotating connecting member 4222 to rotate, and the second cutting driving member 4223 is used to drive the second cutting member 4224 to approach the first conveying surface and contact the PVC film to cut the PVC film.

[0101] It can be understood that the rotating driving member 4221 is a device capable of driving the rotating connecting member 4222 to rotate. For example, the rotating driving member 4221 can be a stepping motor, a servo motor, etc., but is not limited thereto. The rotating connecting member 4222 is a rod-shaped structure. For example, the rotating connecting member 4222 can be an aluminum rod, a copper rod, etc., but is not limited thereto. The second cutting driving member 4223 is a device capable of driving the second cutting member 4224 to approach the PVC film. It can be rotatably arranged on the side of the rotating connecting member 4222 away from the rotating driving member 4221. For example, the second cutting driving member 4223 can be a double-acting cylinder, a rodless cylinder, etc., but is not limited thereto. The second cutting member 4224 is a cutting blade capable of cutting the PVC film. The length of the second cutting member 4224 can be less than the distance between two adjacent rotating driving members 4221 along the first direction. For example, the second cutting member 4224 can be a straight tip blade, a water drop tip blade, etc., but is not limited thereto.

[0102] In this way, when the rotating driving member 4221 is located in front of the conveying and cutting part 20 along the first direction (close to the output end of the PVC film production equipment), the rotating driving member 4221 drives the rotating connecting member 4222 to rotate, so as to drive the second cutting driving member 4223 to move between the supporting part 10 and the conveying and cutting part 20, and make the length direction of the second cutting member 4224 parallel to the first direction, so that the second cutting driving member 4223 and the second cutting member 4224 can smoothly pass through the conveying and cutting part 20 along the first direction without colliding with the conveying and cutting part 20. When the PVC film needs to be cut and the incision formed on the PVC film by the conveying and cutting part 20 is located behind the conveying and cutting part 20 (between the output end of the conveying and cutting part 20 and the output end of the clamping and cutting part 40), the rotating driving member 4221 drives the rotating connecting member 4222 to rotate, so as to drive the second cutting driving member 4223 to be located beside the incision, and make the length direction of the second cutting member 4224 parallel to the second direction, and the second cutting driving member 4223 drives the second cutting member 4224 to approach and contact the PVC film, so as to cut the PVC film and connect the incision with the incision formed on the PVC film by the conveying and cutting part 20 and the edge of the PVC film, thereby cutting the PVC film along the second direction. When the incision formed on the PVC film by the conveying and cutting portion 20 is located between two adjacent rotating driving members 4221 along the first direction, the length direction of the second cutting member 4224 can be parallel to the second direction to cut the PVC film, so that the incision formed on the PVC film by the conveying and cutting portion 20 is connected to the edge of the PVC film; when the incision formed on the PVC film by the conveying and cutting portion 20 is located on the side of the rotating driving member 4221 along the second direction (the extension line of the incision direction can contact the projection of the rotating driving member 4221 along the direction of gravity in the projection along the direction of gravity), the length direction of the second cutting member 4224 can be inclined to the second direction to cut the PVC film, so that the incision formed on the PVC film by the conveying and cutting portion 20 is connected to the edge of the PVC film. By making the second cutting drive member 4223 and the second cutting member 4224 move simultaneously in the same direction and at the same speed as the PVC film, the relative positions of the second cutting drive member 4223 and the second cutting member 4224 with respect to the PVC film in the first direction remain unchanged when the second cutting drive member 4223 and the second cutting member 4224 are cutting the PVC film, so that the second cutting member 4224 can still connect the incision formed on the PVC film by the conveying cutting part 20 and the edge of the PVC film while the PVC film is in a moving state.

[0103] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A PVC film cutting device, used to be connected to the output end of a PVC film production device, characterized in that: include: Supporting part; A conveying and cutting portion, disposed on the supporting portion, for conveying the PVC film along a first direction and cutting the PVC film along a second direction, the conveying and cutting portion having a first conveying surface in contact with the PVC film; as well as Two clamping, conveying and cutting parts are arranged on the support part and are respectively located on both sides of the support part along the second direction. The clamping, conveying and cutting parts include two clamping and cutting parts relatively arranged on the support part along the gravity direction. The clamping and cutting parts include a clamping and conveying device and a plurality of stretching and cutting devices. The clamping and conveying device is arranged on the support part. The stretching and cutting device is arranged on the clamping and conveying device. Each of the stretching and cutting devices of one of the clamping and cutting parts corresponds to each of the stretching and cutting devices of another clamping and cutting part arranged relatively. The clamping and conveying device is used to drive the stretching and cutting device to move along the first direction. The stretching and cutting device is used to contact the PVC film together with the corresponding stretching and cutting device to clamp the PVC film, stretch the PVC film along the second direction, and cut the PVC film. Among them, the first direction is the conveying direction of the PVC film starting from the output end of the PVC film production equipment, and sequentially passes through the input end of the clamping and cutting part, the input end of the conveying and cutting part, the output end of the conveying and cutting part and the output end of the clamping and cutting part, and the second direction is a direction perpendicular to the first direction and perpendicular to the direction of gravity.

2. The PVC film cutting device according to claim 1, characterized in that: The conveying and cutting part comprises: A conveying device is disposed on the supporting portion, wherein the conveying device has the first conveying surface, and a cutting groove recessed toward the inside of the conveying device is formed on the first conveying surface; and A conveying and cutting device, arranged on the supporting portion and located directly above the conveying device, the conveying and cutting device having a second conveying surface in contact with the first conveying surface, and the conveying and cutting device is used to cut the PVC film along the second direction; The PVC film can be located between the conveying device and the conveying and cutting device, and is simultaneously contacted by the first conveying surface and the second conveying surface, so that the conveying device and the conveying and cutting device can jointly convey the PVC film along the first direction.

3. The PVC film cutting device according to claim 2, characterized in that: The conveying and cutting device comprises: A conveying and cutting frame is arranged on the supporting part; A conveying shaft is rotatably arranged on a side of the conveying and cutting frame close to the conveying device and is located directly above the conveying device, wherein the conveying shaft has the second conveying surface, the conveying shaft has a conveying accommodating space, and a guide knife groove connected to the conveying accommodating space and corresponding to the cutting groove is formed on the second conveying surface; A rotation driving device, disposed on the conveying and cutting frame and drivingly connected to the conveying shaft, the rotation driving device being used to drive the conveying shaft to rotate; and The cutting mechanism is located in the conveying accommodation space, is arranged on the conveying shaft and corresponds to the guide knife groove, and is used to approach the conveying device through the guide knife groove and be partially located in the cutting groove to cut the PVC film along the second direction.

4. The PVC film cutting device according to claim 3, characterized in that: The cutting mechanism comprises: a first cutting drive member, located in the conveying accommodation space and disposed on the conveying shaft; and a first cutting member, located in the conveying accommodation space and connected to the power output end of the first cutting driving member, the first cutting member corresponding to the guide knife groove; Wherein, the first cutting drive member is used to drive the first cutting member to approach the conveying device along the guide knife groove and be partially located in the cutting groove when the depth direction of the guide knife groove is parallel to the depth direction of the cutting groove.

5. The PVC film cutting device according to claim 1, characterized in that: The clamping and conveying device comprises: A clamping conveying frame, disposed on the supporting portion and located beside the conveying and cutting portion along the second direction; A conveying drive device, arranged on the clamping conveying frame; A driving wheel, rotatably disposed on the clamping conveyor frame and connected to a power output end of the conveying drive device; A driven wheel is rotatably disposed on a side of the clamping conveyor frame away from the driving wheel; and A transmission belt, drivingly connected to the driving wheel and the driven wheel; Wherein, the stretching and cutting device is arranged on the transmission belt, and the conveying driving device is used to drive the driving wheel to rotate so as to drive the transmission belt to move along the first direction.

6. The PVC film cutting device according to claim 5, characterized in that: The stretching and cutting device comprises: A clamping and stretching device, disposed on the transmission belt, for contacting the PVC film together with the clamping and stretching device on the corresponding stretching and cutting device to clamp the PVC film and stretch the PVC film; and A rotating cutting device is arranged on a side of the clamping and stretching device away from the first conveying surface, and the rotating cutting device is used to cut the PVC film.

7. The PVC film cutting device according to claim 6, characterized in that: The clamping and stretching device comprises: a stretching mechanism, disposed on the transmission belt; and A resistance mechanism, arranged on one side of the stretching mechanism close to the conveying and cutting portion, the resistance mechanism being used to resist the PVC film together with another corresponding resistance mechanism to clamp the PVC film; The stretching mechanism is used to drive the resistance mechanism away from the conveying and cutting portion when the resistance mechanism and another corresponding resistance mechanism jointly resist the PVC film, so as to stretch the PVC film along the second direction.

8. The PVC film cutting device according to claim 7, characterized in that: The stretching mechanism comprises: A stretching accommodating member, disposed on the transmission belt, the accommodating member having a stretching accommodating space; and A stretching driving member, located in the stretching accommodation space and arranged on the accommodation member; Wherein, the resistance mechanism is connected to the power output end of the stretching driving member, and the stretching driving member is used to drive the resistance mechanism to approach or move away from the conveying and cutting part along the second direction.

9. The PVC film cutting device according to claim 8, characterized in that: The conflicting mechanisms include: A resistance accommodating member is located on a side of the stretching mechanism close to the conveying and cutting portion and is connected to the power output end of the stretching driving member. The resistance accommodating member has a resistance accommodating space. An opening communicating with the resistance accommodating space is provided on a side of the resistance accommodating member close to the first conveying surface. a resistance member, movably disposed in the resistance accommodation space at one side close to the first conveying surface, the resistance member being used to resist the PVC film; and An elastic member is located in the abutment accommodation space, two ends of the elastic member are respectively connected to the abutment member and the abutment accommodation member, and the elastic member is used to drive the abutment member to approach the first conveying surface and abut against the PVC film.

10. The PVC film cutting device according to claim 9, characterized in that: The rotary cutting device comprises: A rotating driving member, disposed on a side of the abutting accommodation member away from the first conveying surface; A rotating connecting member, disposed on the rotating driving member and connected to the rotating shaft of the rotating driving member; A second cutting drive member is disposed on a side of the rotating connecting member away from the rotating drive member; and a second cutting member, located on a side of the second cutting driving member close to the first conveying surface and connected to a power output end of the second cutting driving member; The rotating driving member is used to drive the rotating connecting member to rotate, and the second cutting driving member is used to drive the second cutting member to approach the first conveying surface and contact the PVC film to cut the PVC film.

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