Green and environment-friendly PVC decorative film production process

Abstract

The invention relates to the technical field of PVC decorative films, in particular to a green and environment-friendly PVC decorative film production process which comprises the following steps: S1, preparing raw materials, mixing the raw materials, making the raw materials into PVC paste, then changing the PVC paste from a flowing state into a viscous flow state, and then pressing the raw materials into a PVC film by a calender. In the process that the movable roller moves downwards, a PVC film is loosened, the longitudinal tension borne by the PVC film is reduced, a tenon block, a clamping rod and a guide rod on the movable roller get close to the middle of the movable roller, the two side edges of the PVC film are guided by the guide rod to move to the position between the tenon block and the clamping rod, the guide rod is coaxial with the clamping rod under the pushing of the PVC film, then the movable roller moves upwards, and the PVC film is clamped by the clamping rod. The tenon block and the clamping rod drive the side edge of the PVC film to move towards the two ends of the movable roller, so that the PVC film is fully unfolded, and wrinkles on the PVC film are smoothed.

Description

Technical Field

[0001] The invention relates to the technical field of PVC decorative films, and in particular to a green and environmentally friendly PVC decorative film production process. Background Art

[0002] PVC decorative film is a common building material. It has excellent heat insulation and UV protection properties, is safe and explosion-proof, and is easy to install, so it is widely used.

[0003] According to the publication (announcement) number CN115246240A, the publication (announcement) date is 2022.10.28, and the disclosed PVC decorative film production process adopts the following technical scheme: A PVC decorative film production process, including the following process steps: S1, metering: metering the required raw materials; S2, stirring and mixing: stirring and mixing the metered raw materials; S3, banburying: banburying the stirred raw materials; S4, calendering: calendering the banburying raw materials into a certain thickness; S5, cooling: cooling the calendered raw materials to obtain a PVC film; S6, eliminating bubbles: eliminating bubbles in the coating that needs to be attached to the PVC film by squeezing the feeding roller; S7, attachment: attaching an isolation coating and a skin-feel coating to the PVC film to obtain a PVC decorative film. By adopting the above technical scheme, the bubbles in the coating are reduced before attachment, reducing the situation where the coating is difficult to completely cover the PVC film due to bubbles during attachment, and improving the product quality of the PVC decorative film.

[0004] In the prior art including the above-mentioned patent, the production of PVC decorative film needs to go through raw material preparation, mixing, plasticization, calendering, cooling and winding. The transportation of the decorative film in the middle is undertaken by rollers. However, the decorative film is very long and needs to be stretched tight during transportation, resulting in a large longitudinal tension on the decorative film. Wrinkles are easily formed on the decorative film, which is not conducive to printing and winding. Summary of the invention

[0005] The purpose of the present invention is to provide a green and environmentally friendly PVC decorative film production process, aiming to solve the problem that the decorative film needs to be stretched tightly during transportation, is subjected to large longitudinal tension, and is prone to wrinkles.

[0006] In order to achieve the above object, the present invention provides a green and environmentally friendly PVC decorative film production process, comprising the following steps: S1, prepare raw materials and mix them to make PVC paste, then change the PVC paste from a flowing state to a viscous flow state, and then use a calender to press the raw materials into a PVC film; S2, cooling and solidifying the PVC film and transferring it to the movable roller via the transfer roller, and the movable roller reciprocates in the vertical direction to change the longitudinal tension of the PVC film; S3. During the downward movement of the movable roller, the tenon block, the clamping rod and the guide rod thereon move toward the middle of the movable roller, and the two side edges of the PVC film move between the tenon block and the clamping rod under the guidance of the guide rod. The guide rod is coaxial with the clamping rod under the push of the PVC film; S4, then the movable roller moves upward, and the tenon block and the clamping rod move the side of the PVC film toward the two ends of the movable roller to fully unfold the PVC film; S5. When the movable roller moves to the highest point, the clamping rod is unlocked and can rotate with the guide rod, so that the PVC film can move and be rolled up by the winding device.

[0007] Preferably, the machine comprises a rack, on which are provided: Transfer roller; The movable roller has a traction assembly which is always located directly above it and is used to traction the side of the PVC film. The movable roller moves downward to move the two traction assemblies toward the middle of the movable roller. The movable roller includes the following two stations: At the first station, the movable roller is at the highest point, and the movable roller rotates relative to the frame to convey the PVC film; At the second station, the movable roller leaves the highest point and only slides relative to the frame; The driven roller is used for cooperating with the active roller to transport the PVC film.

[0008] Preferably, a support block for supporting the movable roller is slidably provided on the frame, a locking block is movably provided on the movable roller, and locking grooves distributed in a circumferential array and adapted to the locking block are provided on the support block.

[0009] Preferably, a slider for driving the locking block to move is provided on the frame, and the movable roller moves to the highest point so that the slider drives the locking block to leave the supporting block.

[0010] Preferably, a mounting ring for supporting the traction assembly is rotatably provided on the movable roller, and a guide block for limiting the moving direction thereof is provided on the mounting ring.

[0011] Preferably, the movable roller is provided with a tenon groove corresponding to the plurality of locking grooves one by one and used for guiding the movement of the traction assembly.

[0012] Preferably, the traction assembly comprises a tenon block movably mounted on the mounting ring, and a clamping rod for clamping the side of the PVC film is movably provided on the tenon block, and the clamping rod includes the following two states; In the first state, the movable roller is in the first working position, and the clamping rod can rotate relative to the tenon block; In the second state, the movable roller is in the second working position, and the clamping rod is fixed on the tenon block.

[0013] Preferably, a guide rod for guiding the side edge of the PVC film is hingedly connected to the clamping rod, and a trigger plate for driving the guide rod to rotate is provided on the guide rod.

[0014] Preferably, a locking rod for locking the clamping rod is disposed inside the tenon block, and the movable roller is at the highest point so that the driven roller pushes the locking rod to separate from the clamping rod.

[0015] Preferably, a connecting rod is provided between the mounting ring and the tenon block, and the connecting rod is specifically a self-elastic telescopic rod, and a first pull rope is provided between the tenon block and the frame.

[0016] In the above technical scheme, the present invention provides a green and environmentally friendly PVC decorative film production process, which has the following beneficial effects: in the process of the movable roller moving downward, the PVC film relaxes and the longitudinal tension it is subjected to is reduced, the tenon block, the clamping rod and the guide rod on the movable roller approach the middle of the movable roller, and the two side edges of the PVC film move between the tenon block and the clamping rod under the guidance of the guide rod, and the guide rod is coaxial with the clamping rod under the push of the PVC film, and then the movable roller moves upward, and the tenon block and the clamping rod move the side edges of the PVC film toward the two ends of the movable roller to fully unfold the PVC film and smooth out the wrinkles on the PVC film. When the movable roller moves to the highest point, the clamping rod is unlocked, and the support rod rotates with the guide rod relative to the tenon block, so that the PVC film can move and be rolled up by the winding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a notch provided in an embodiment of the present invention; Figure 3 A schematic diagram of the internal structure of a rack provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a transmission belt provided by an embodiment of the present invention; Figure 5 A schematic diagram of the structure of a slider provided by an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 A schematic diagram of the internal structure of a transmission shaft provided by an embodiment of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle; Fig. 9 for Figure 8 Enlarged view of center C.

[0019] Description of reference numerals: 1. Frame; 11. Active roller; 111. Transmission shaft; 112. Transmission wheel; 1121. Transmission belt; 1122. Driving rod; 1123. Tensioning wheel; 1124. Synchronous chain; 113. Locking block; 1131. Second pull rope; 114. Sliding block; 115. Guide groove; 116. Support block; 1161. Locking groove; 117. Driving disk; 118. Rocker; 119. Shaft; 12. Tenon block; 121. Clamping rod; 122. Guide rod; 123. Trigger plate; 124. Active disk; 125. Spring leaf; 126. Lock hole; 127. Locking rod; 128. Trigger rod; 131. Mounting ring; 132. Guide block; 133. Notch; 134. First pull rope; 135. Connecting rod; 136. Tenon groove; 14. Transfer roller; 15. Driven roller. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-9 As shown, a green and environmentally friendly PVC decorative film production process includes the following steps: S1, prepare raw materials and mix them to make PVC paste, then change the PVC paste from a flowing state to a viscous flow state, and then use a calender to press the raw materials into a PVC film; S2, cooling and solidifying the PVC film and transferring it to the movable roller 11 via the transfer roller 14, and the movable roller 11 reciprocates in the vertical direction to change the longitudinal tension of the PVC film; S3. During the downward movement of the movable roller 11, the tenon block 12, the clamping rod 121 and the guide rod 122 thereon move toward the middle of the movable roller 11, and the two side edges of the PVC film move between the tenon block 12 and the clamping rod 121 under the guidance of the guide rod 122. The guide rod 122 is coaxial with the clamping rod 121 under the push of the PVC film. S4, then the movable roller 11 moves upward, and the tenon block 12 and the clamping rod 121 move the side edge of the PVC film toward the two ends of the movable roller 11 to fully unfold the PVC film; S5. When the movable roller 11 moves to the highest point, the clamping rod 121 is unlocked and can rotate with the guide rod 122, so that the PVC film can move and be rolled up by the rolling device.

[0022] Specifically, in the process of the movable roller 11 moving downward, the PVC film relaxes and the longitudinal tension it receives decreases. The tenon 12, the clamping rod 121 and the guide rod 122 on the movable roller 11 approach the middle of the movable roller 11, and the two side edges of the PVC film move to between the tenon 12 and the clamping rod 121 under the guidance of the guide rod 122. The guide rod 122 is coaxial with the clamping rod 121 under the push of the PVC film. Then the movable roller 11 moves upward, and the tenon 12 and the clamping rod 121 move the side edges of the PVC film toward the two ends of the movable roller 11 to fully unfold the PVC film and smooth out the wrinkles on the PVC film. When the movable roller 11 moves to the highest point, the clamping rod 121 is unlocked, and the support rod rotates with the guide rod 122 relative to the tenon 12, so that the PVC film can move and be rolled up by the winding device.

[0023] In the above technical solution, during the downward movement of the movable roller 11, the PVC film relaxes and the longitudinal tension it receives is reduced. The tenon 12, the clamping rod 121 and the guide rod 122 on the movable roller 11 approach the middle of the movable roller 11, and the two side edges of the PVC film move to between the tenon 12 and the clamping rod 121 under the guidance of the guide rod 122. The guide rod 122 is coaxial with the clamping rod 121 under the push of the PVC film. Then the movable roller 11 moves upward, and the tenon 12 and the clamping rod 121 move the side edges of the PVC film toward the two ends of the movable roller 11 to fully unfold the PVC film and smooth out the wrinkles on the PVC film. When the movable roller 11 moves to the highest point, the clamping rod 121 is unlocked, and the support rod rotates with the guide rod 122 relative to the tenon 12, so that the PVC film can move and be wound up by the winding device.

[0024] As an embodiment further provided by the present invention, it includes a rack 1, on which is provided: Transfer roller 14; The movable roller 11 is symmetrically provided with a traction assembly which is always located directly above it and is used to traction the side of the PVC film. The movable roller 11 moves downward to make the two traction assemblies move toward the middle of the movable roller 11. The movable roller 11 includes the following two stations: At the first station, the movable roller 11 is at the highest point, and the movable roller 11 rotates relative to the frame 1 to convey the PVC film; At the second station, the movable roller 11 leaves the highest point and the movable roller 11 only slides relative to the frame 1; The driven roller 15 is used to cooperate with the active roller 11 to transport the PVC film.

[0025] Specifically, a notch 133 for guiding the movable roller 11 to move is formed on the frame 1 .

[0026] Furthermore, in the process of the active roller 11 moving downward, the PVC film relaxes, the longitudinal tension it receives decreases, the traction assembly on the active roller 11 approaches the middle of the active roller 11, and the two side edges of the PVC film move into the traction assembly. Then the active roller 11 moves upward, and the traction assembly moves with the side edges of the PVC film toward the two ends of the active roller 11 to fully unfold the PVC film and smooth out the wrinkles on the PVC film. When the active roller 11 moves to the highest point, the traction assembly loosens the side edges of the PVC film, and the active roller 11 rotates to transport the PVC film, and the PVC film is wound up by the winding device.

[0027] As another embodiment further provided by the present invention, a support block 116 for supporting the movable roller 11 is slidably provided on the frame 1, a locking block 113 is movably provided on the movable roller 11, and locking grooves 1161 distributed in a circular array and adapted to the locking block 113 are provided on the support block 116.

[0028] Specifically, a motor is rotatably arranged inside the frame 1, a driving disk 117 is fixedly mounted on the output end of the motor, a rocker 118 is arranged between the driving disk 117 and the support block 116, the rocker 118 is specifically a self-elastic telescopic rod, a slide groove for guiding the movement of the support block 116 is arranged inside the frame 1, a transmission shaft 111 extending to the inside of the support block 116 is arranged on the movable roller 11, and a locking block 113 is slidably arranged on the transmission shaft 111.

[0029] Furthermore, during operation, the motor outputs torque to drive the driving disk 117 to rotate, and the driving disk 117 drives the support block 116 to move through the rocker 118. At this time, the locking block 113 on the transmission shaft 111 is inserted into the locking groove 1161 on the support block 116, and the movable roller 11 is fixed on the support block 116, and the movable roller 11 cannot rotate. When the support block 116 moves the movable roller 11 to the highest point, the locking block 113 on the transmission shaft 111 moves, and the locking block 113 is separated from the locking groove 1161, and the movable roller 11 can rotate relative to the support block 116 to convey the PVC film. At the same time, the end of the rocker 118 that is rotated and installed on the driving disk 117 does not move to the highest point, and the driving disk 117 continues to rotate, so that the rocker 118 is compressed, and the movable roller 11 can stay at the highest point for a period of time.

[0030] As another embodiment further provided by the present invention, a slider 114 for driving the locking block 113 to move is provided on the frame 1 , and the movable roller 11 moves to the highest point so that the slider 114 drives the locking block 113 to leave the supporting block 116 .

[0031] Specifically, a transmission wheel 112 is provided on the transmission shaft 111, a transmission belt 1121 partially close to the transmission wheel 112 is provided inside the frame 1, a driving rod 1122 for driving the transmission belt 1121 to move is provided on the frame 1, a shaft 119 is provided on the driving disk 117, a synchronous chain 1124 is provided between the shaft 119 and the driving rod 1122, a tensioning wheel 1123 for tensioning the synchronous chain 1124 is rotatably provided on the frame 1, a second pull rope 1131 is provided between the slider 114 and the locking block 113, a spring is provided between the slider 114 and the transmission shaft 111, a spring is provided between the locking block 113 and the transmission shaft 111, a guide groove 115 for pushing the slider 114 is provided on the frame 1, and the depth of the guide groove 115 increases from top to bottom.

[0032] Furthermore, in the process of the support block 116 moving the movable roller 11 upward, the slider 114 moves upward along the guide groove 115, and the depth of the guide groove 115 gradually decreases. The guide groove 115 pushes the slider 114 to move toward the inside of the transmission shaft 111, and the second pull rope 1131 is tightened. The slider 114 drives the locking block 113 to move toward the inside of the transmission shaft 111 through the second pull rope 1131. When the movable roller 11 moves to the highest point, the locking block 113 is completely retracted into the inside of the transmission shaft 111, and the transmission wheel 112 is tightly attached to the transmission belt 1121. The movable roller 11 is unlocked, and at this time, the driving disk 117 drives the shaft rod 119 to rotate, and the shaft rod 119 drives the driving rod 1122 to rotate through the synchronous chain 1124, and the driving rod 1122 drives the transmission belt 1121 to move. The transmission belt 1121 drives the transmission wheel 112 to rotate through the friction force, thereby driving the transmission shaft 111 and the movable roller 11 to rotate, and the movable roller 11 conveys the PVC film.

[0033] As another embodiment further provided by the present invention, a mounting ring 131 for supporting the traction assembly is rotatably provided on the movable roller 11, and a guide block 132 for limiting the moving direction thereof is provided on the mounting ring 131.

[0034] Specifically, the guide block 132 is matched with the notch 133 on the frame 1 .

[0035] Furthermore, the guide block 132 is always located in the notch 133 to limit the mounting ring 131 to reciprocate only in the vertical direction, thereby ensuring that the traction assembly on the mounting ring 131 is always located directly above the movable roller 11 .

[0036] As another embodiment further provided by the present invention, the movable roller 11 is provided with a tenon groove 136 which corresponds one-to-one with the plurality of locking grooves 1161 and is used to guide the movement of the traction assembly.

[0037] Specifically, the end of the tongue and groove 136 is provided with a slope.

[0038] Furthermore, in the process of the movable roller 11 moving downward, the movable block moves downward along the guide groove 115, and the movable block gradually extends outside the transmission shaft 111. The second pull rope 1131 is relaxed, and at the same time, the traction assembly moves toward the middle of the movable roller 11, and the traction assembly moves along the slope at the end of the tenon groove 136, pushing the movable roller 11 to rotate relative to the support block 116 until the traction assembly enters the tenon groove 136. At this time, the locking block 113 on the movable roller 11 is facing one of the multiple locking grooves 1161 on the support plate, and the locking block 113 is inserted into the locking groove 1161 under the push of the spring, fixing the movable roller 11 on the support block 116.

[0039] As another embodiment further provided by the present invention, the traction assembly includes a tenon block 12 movably mounted on the mounting ring 131, and a clamping rod 121 for clamping the side of the PVC film is movably provided on the tenon block 12, and the clamping rod 121 includes the following two states; In the first state, the movable roller 11 is in the first position, and the clamping rod 121 can rotate relative to the tenon block 12; In the second state, the movable roller 11 is in the second working position, and the clamping rod 121 is fixed on the tenon block 12 .

[0040] Specifically, the tenon block 12 is matched with the tenon groove 136, and the distance between the clamping rod 121 and the tenon block 12 is equal to the thickness of the PVC film.

[0041] Furthermore, when the movable roller 11 moves downward, the tenon block 12 moves toward the middle of the movable roller 11 along the tenon groove 136 with the clamp. At this time, the side of the PVC film is gradually inserted into the gap between the clamping rod 121 and the tenon block 12. The clamping rod 121 cooperates with the tenon block 12 to clamp the side of the PVC film. Then the movable roller 11 moves upward, and the tenon block 12 and the clamping rod 121 cooperate to move the side of the movable roller 11 with the side of the PVC film to unfold the PVC film. When the movable roller 11 moves to the highest point, the clamping rod 121 is unlocked, and the clamping rod 121 can rotate relative to the tenon block 12 to facilitate the movement of the side of the PVC film.

[0042] As another embodiment further provided by the present invention, a guide rod 122 for guiding the side edge of the PVC film is hingedly connected to the clamping rod 121 , and a trigger plate 123 for driving the guide rod 122 to rotate is provided on the guide rod 122 .

[0043] Specifically, the trigger piece 123 is located on one end where the guide rod 122 is connected to the support rod, a torsion spring is provided between the guide rod 122 and the support rod, and a groove adapted to the trigger piece 123 is provided on the clamping rod 121 .

[0044] Furthermore, in the process of the movable roller 11 moving downward, the guide rod 122 rotates relative to the clamping rod 121 under the action of the torsion spring, and the trigger plate 123 on the guide rod 122 abuts against the tenon 12. When the side edge of the PVC film abuts against the guide rod 122, the side edge of the PVC film moves along the inclined guide rod 122 to the angle formed by the trigger plate 123 and the tenon 12. The side edge of the PVC film continues to move and pushes the trigger plate 123. The trigger plate 123 drives the guide rod 122 to rotate, so that the guide rod 122 is coaxial with the clamping rod 121, and the trigger plate 123 is embedded in the groove on the clamping rod 121. The side edge of the PVC film moves between the clamping rod 121 and the tenon 12 and is fixed by the clamping rod 121.

[0045] As another embodiment further provided by the present invention, a locking rod 127 for locking the clamping rod 121 is provided inside the tenon block 12 , and the movable roller 11 is at the highest point so that the driven roller 15 pushes the locking rod 127 to separate from the clamping rod 121 .

[0046] Specifically, a trigger rod 128 is slidably provided on the tenon block 12, a locking rod 127 is provided on the trigger rod 128, a spring is provided between the trigger rod 128 and the tenon block 12, a locking hole 126 adapted to the locking rod 127 is provided on the clamping rod 121, a movable disk 124 is rotatably provided on the clamping rod 121, a torsion spring is provided between the movable disk 124 and the clamping rod 121, a spring leaf 125 is provided on the movable disk 124, a groove adapted to the tenon block 12 is provided inside the tenon block 12, and a groove is provided at the end of the driven roller 15.

[0047] Furthermore, when the movable roller 11 is at the highest point, the trigger rod 128 abuts against the driven roller 15, and the driven roller 15 pushes the trigger rod 128 and the locking rod 127 to move downward, the locking rod 127 separates from the locking hole 126, and the clamping rod 121 is unlocked. At this time, the PVC film moves, and the PVC film drives the clamping rod 121 to rotate. At this time, the movable disk 124 is locked inside the tenon block 12 by the spring leaf 125, and the clamping rod 121 rotates relative to the movable disk 124. The torsion spring accumulates elastic potential energy until the force applied by the torsion spring to the movable disk 124 causes the spring leaf 125 to deform and separate from the groove. At this time, the movable disk 124 rotates with the clamping rod 121; in the process of the movable roller 11 moving downward, due to the wrinkles of the PVC film, the PVC The side of the C film is separated from the clamping rod 121, the clamping rod 121 stops rotating, and the trigger rod 128 is separated from the driven roller 15. At this time, the torsion spring releases its elastic potential energy, and the spring leaf 125 on the movable disk 124 abuts against the inner wall of the tenon block 12. The movable disk 124 has a large resistance to rotation, and the torsion spring drives the clamping rod 121 to rotate until the locking hole 126 on the clamping rod 121 is opposite to the locking rod 127. The trigger rod 128 moves upward under the push of the spring, and the locking rod 127 is inserted into the locking hole 126 to lock the clamping rod 121. The torsion spring continues to release its elastic potential energy, causing the movable disk 124 to rotate relative to the clamping rod 121, and the spring leaf 125 on the movable disk 124 is re-embedded into the groove on the inner wall of the tenon block 12.

[0048] As another embodiment further provided by the present invention, a connecting rod 135 is provided between the mounting ring 131 and the tenon block 12 , and the connecting rod 135 is specifically a self-elastic telescopic rod, and a first pull rope 134 is provided between the tenon block 12 and the frame 1 .

[0049] Specifically, during operation, the motor outputs torque to drive the driving disk 117 to rotate, the driving disk 117 drives the support block 116 to move downward through the rocker 118, the support block 116 drives the movable roller 11 to move downward through the transmission shaft 111, the first pull rope 134 between the tenon block 12 and the frame 1 is relaxed, the connecting rod 135 releases the accumulated elastic potential energy, the connecting rod 135 pushes the tenon block 12 to move toward the center of the movable roller 11, the tenon block 12 moves along the slope on the tenon groove 136, and the tenon block 12 pushes the movable roller 11. The movable roller 11 rotates relative to the support block 116 until the traction assembly enters one of the multiple tenons 136. At this time, the locking block 113 on the movable roller 11 is opposite to one of the multiple locking grooves 1161 on the support plate, and in the process of the movable roller 11 moving downward, the movable block moves downward along the guide groove 115, and the movable block gradually extends to the outside of the transmission shaft 111. The second pull rope 1131 is relaxed, and the locking block 113 is inserted into the locking groove 1161 under the push of the spring, thereby fixing the movable roller 11 on the support block 116.

[0050] During the downward movement of the movable roller 11, due to the wrinkles of the PVC film, the side of the PVC film is separated from the clamping rod 121, the clamping rod 121 stops rotating, and the trigger rod 128 is separated from the driven roller 15. At this time, the torsion spring releases its elastic potential energy, and the spring leaf 125 on the movable disk 124 abuts against the inner wall of the tenon block 12. The rotation resistance of the movable disk 124 is large, and the torsion spring drives the clamping rod 121 to rotate until the locking hole 126 on the clamping rod 121 is opposite to the locking rod 127. The trigger rod 128 moves upward under the push of the spring, and the locking rod 127 is inserted into the locking hole 126 to lock the clamping rod 121. The torsion spring continues to release its elastic potential energy, causing the movable disk 124 to rotate relative to the clamping rod 121, and the spring leaf 125 on the movable disk 124 is re-embedded into the groove on the inner wall of the tenon block 12.

[0051] The guide rod 122 rotates relative to the clamping rod 121 under the action of the torsion spring, and the trigger piece 123 on the guide rod 122 abuts against the tenon 12. When the side edge of the PVC film abuts against the guide rod 122, the side edge of the PVC film moves along the inclined guide rod 122 to the angle formed by the trigger piece 123 and the tenon 12. The side edge of the PVC film continues to move and pushes the trigger piece 123. The trigger piece 123 drives the guide rod 122 to rotate, so that the guide rod 122 is coaxial with the clamping rod 121. The trigger piece 123 is embedded in the groove on the clamping rod 121. The side edge of the PVC film moves between the clamping rod 121 and the tenon 12 and is fixed by the clamping rod 121.

[0052] The driving disc 117 continues to rotate and drives the movable roller 11 to move upward through the rocker 118. The first pull rope 134 is gradually tightened, driving the tenon block 12 to move toward the two ends of the movable roller 11. The tenon block 12 gradually leaves the tenon groove 136. The connecting rod 135 between the tenon block 12 and the mounting ring 131 is compressed and accumulates elastic potential energy. The tenon block 12 and the clamping rod 121 cooperate to move the side of the movable roller 11 with the side of the PVC film, so that the PVC film is unfolded. The slider 114 moves upward along the guide groove 115, and the depth of the guide groove 115 gradually decreases. The guide groove 115 pushes the slider 114 to move toward the inside of the transmission shaft 111. The second pull rope 1131 is tightened, and the slider 114 drives the locking block 113 to move toward the inside of the transmission shaft 111 through the second pull rope 1131.

[0053] When the movable roller 11 moves to the highest point, the locking block 113 is completely retracted into the transmission shaft 111, the transmission wheel 112 is tightly attached to the transmission belt 1121, and the movable roller 11 is unlocked. At this time, the driving disk 117 drives the shaft 119 to rotate, and the shaft 119 drives the driving rod 1122 to rotate through the synchronous chain 1124. The driving rod 1122 drives the transmission belt 1121 to move, and the transmission belt 1121 drives the transmission wheel 112 to rotate through friction, thereby driving the transmission shaft 111 and the movable roller 11 to rotate. At the same time, the trigger rod 128 abuts against the driven roller 15, and the driven roller 15 pushes the trigger rod 128. 28 and the locking rod 127 move downward, the locking rod 127 is separated from the locking hole 126, and the clamping rod 121 is unlocked. At this time, the PVC film moves, and the PVC film drives the clamping rod 121 to rotate. At this time, the movable disk 124 is locked inside the tenon block 12 by the spring leaf 125, and the clamping rod 121 rotates relative to the movable disk 124. The torsion spring accumulates elastic potential energy until the force applied by the torsion spring to the movable disk 124 causes the spring leaf 125 to deform and separate from the groove. At this time, the movable disk 124 rotates with the clamping rod 121, and the movable roller 11 cooperates with the driven roller 15 to transport the PVC film, and the PVC film is wound up by the winding device.

[0054] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A green and environmentally friendly PVC decorative film production process, characterized in that: The following steps are involved: S1, prepare raw materials and mix them to make PVC paste, then change the PVC paste from a flowing state to a viscous flow state, and then use a calender to press the raw materials into a PVC film; S2, cooling and solidifying the PVC film and transferring it to the movable roller (11) via the transfer roller (14), wherein the movable roller (11) reciprocates in the vertical direction to change the longitudinal tension applied to the PVC film; S3. During the downward movement of the movable roller (11), the tenon block (12), the clamping rod (121) and the guide rod (122) thereon move toward the middle of the movable roller (11), and the two side edges of the PVC film move between the tenon block (12) and the clamping rod (121) under the guidance of the guide rod (122), and the guide rod (122) is coaxial with the clamping rod (121) under the push of the PVC film; S4, the movable roller (11) then moves upward, and the tenon block (12) and the clamping rod (121) move the side edge of the PVC film toward the two ends of the movable roller (11) to fully unfold the PVC film; S5. When the movable roller (11) moves to the highest point, the clamping rod (121) is unlocked and can rotate with the guide rod (122), so that the PVC film can move and be rolled up by the rolling device.

2. A green and environmentally friendly PVC decorative film production process according to claim 1, characterized in that: The machine comprises a frame (1), on which is arranged: Transfer roller (14); The movable roller (11) has a traction assembly which is always located directly above the movable roller and is used to traction the side edge of the PVC film. The movable roller (11) moves downward so that the two traction assemblies move toward the middle of the movable roller (11). The movable roller (11) includes the following two workstations: At the first workstation, the movable roller (11) is at the highest point, and the movable roller (11) rotates relative to the frame (1) to convey the PVC film; At the second workstation, the movable roller (11) leaves the highest point, and the movable roller (11) only slides relative to the frame (1); The driven roller (15) is used to cooperate with the active roller (11) to transport the PVC film.

3. A green and environmentally friendly PVC decorative film production process according to claim 2, characterized in that: A support block (116) for supporting the movable roller (11) is slidably provided on the frame (1), a locking block (113) is movably provided on the movable roller (11), and locking grooves (1161) distributed in a circumferential array and adapted to the locking block (113) are provided on the support block (116).

4. A green and environmentally friendly PVC decorative film production process according to claim 3, characterized in that: The frame (1) is provided with a slider (114) for driving the locking block (113) to move, and the movable roller (11) moves to the highest point so that the slider (114) drives the locking block (113) to leave the supporting block (116).

5. The green and environmentally friendly PVC decorative film production process according to claim 2, characterized in that: A mounting ring (131) for supporting the traction assembly is rotatably disposed on the movable roller (11), and a guide block (132) for limiting the moving direction thereof is disposed on the mounting ring (131).

6. The green and environmentally friendly PVC decorative film production process according to claim 3, characterized in that: The movable roller (11) is provided with a tongue and tongue groove (136) which corresponds one-to-one to a plurality of locking grooves (1161) and is used to guide the movement of the traction component.

7. The green and environmentally friendly PVC decorative film production process according to claim 5, characterized in that: The traction assembly comprises a tenon block (12) movably mounted on the mounting ring (131), a clamping rod (121) for clamping the side edge of the PVC film being movably provided on the tenon block (12), and the clamping rod (121) comprising the following two states; In a first state, the movable roller (11) is in a first working position, and the clamping rod (121) can rotate relative to the tenon block (12); In the second state, the movable roller (11) is in the second working position, and the clamping rod (121) is fixed on the tenon block (12).

8. The green and environmentally friendly PVC decorative film production process according to claim 7, characterized in that: A guide rod (122) for guiding the side edge of the PVC film is hingedly connected to the clamping rod (121), and a trigger plate (123) for driving the guide rod (122) to rotate is arranged on the guide rod (122).

9. The green and environmentally friendly PVC decorative film production process according to claim 7, characterized in that: A locking rod (127) for locking the clamping rod (121) is arranged inside the tenon block (12), and the movable roller (11) is at the highest point so that the driven roller (15) pushes the locking rod (127) to separate from the clamping rod (121).

10. The green and environmentally friendly PVC decorative film production process according to claim 7, characterized in that: A connecting rod (135) is provided between the mounting ring (131) and the tenon block (12); the connecting rod (135) is specifically a self-elastic telescopic rod; and a first pull rope (134) is provided between the tenon block (12) and the frame (1).

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