A kind of embossing device for printing embossed PVC table cloth processing

Abstract

The present application relates to the technical field of tablecloth embossing, and specifically discloses an embossing device for processing printed embossed PVC tablecloth, which comprises a rack, a pre-embossing traction unit, an embossing unit and a deviation rectifying and spreading unit. The pre-embossing traction unit actively pulls and pre-embosses the tablecloth, eliminates winding warping and reduces embossing defects. The deviation rectifying and spreading unit is bidirectionally pressed and horizontally pushed to forcibly spread wrinkles and correct lateral deviation in real time, ensuring accurate alignment of the embossing pattern. The embossing unit uses elastic pressing elements to adaptively adjust the pressure, avoiding excessive or insufficient rigidity. The first supporting roller is actively driven to drive the tablecloth to move synchronously with the embossing roller, eliminating slippage and ensuring uniform embossing depth and clear lines. The heating element only locally and quickly heats the bottom contact area of the embossing roller, improving the plasticity of the tablecloth and the line filling capacity, while avoiding heat diffusion and achieving energy saving and efficiency improvement.

Description

Technical Field

[0001] This invention relates to the field of tablecloth embossing technology, and more specifically, to an embossing device for processing printed PVC tablecloths. Background Technology

[0002] In the field of embossing processing of PVC tablecloths, existing embossing devices mainly have the following defects: Traditional embossing rollers use a rigid pressing structure, which cannot automatically adjust the pressure according to the fluctuation of the tablecloth thickness. This can easily cause excessive local pressure to damage the material or insufficient pressure to result in blurred texture. Furthermore, driven embossing rollers often slip and have speed fluctuations, affecting the uniformity of embossing depth. In addition, existing heating methods mostly use overall heating of the embossing roller or tablecloth, which results in severe heat diffusion, high energy consumption, and easy thermal deformation of the tablecloth in non-contact areas, affecting the quality of the finished product. The problem of lateral offset during the embossing process is prominent. The tablecloth tends to deviate to one side when continuously fed, and the existing equipment lacks an effective correction and spreading mechanism, which cannot correct the offset in real time. This results in poor alignment accuracy between the embossed pattern and the edge of the tablecloth, making it difficult to guarantee the consistency of pattern repetition and positioning during mass production. Summary of the Invention

[0003] To overcome the above-mentioned technical problems, the present invention proposes an embossing device for processing printed and embossed PVC tablecloths.

[0004] The objective of this invention can be achieved through the following technical solutions: An embossing device for processing printed and embossed PVC tablecloths, used for embossing processing of tablecloths, includes: a frame; The pre-compression traction unit, located on one side of the frame, is used to pre-compress and pull the tablecloth. An embossing unit, located on the other side of the frame, includes a first support frame fixed to the frame and a first support roller rotatably mounted on the first support frame. A drive motor for driving the first support roller is mounted on one side of the first support frame. A first elastic clamping member is provided on the top of the first support frame. An embossing roller adapted to the first support roller is rotatably mounted on the first elastic clamping member. A heating member communicating with the embossing roller is provided on the side of the first support frame. The correction paving unit is located between the pre-compression traction unit and the embossing unit and is used to correct the paving of the tablecloth that is passing through.

[0005] As a further aspect of the present invention: the first elastic clamping member includes a first fixed seat symmetrically fixed on both sides of the first support frame and a first lifting seat slidably embedded in the first support frame on the same side, the embossing roller being rotatably mounted on the first lifting seat; a first sleeve is provided on the first fixed seat, a first sliding rod that movably passes through the first sleeve is vertically mounted on the first lifting seat, a first spring is sleeved on the first sliding rod, and the first spring is located between the first fixed seat and the first lifting seat.

[0006] As a further aspect of the present invention: the embossing roller includes a rotating shaft rotatably mounted on a first lifting seat, and an embossing cylinder is fixedly sleeved on the rotating shaft.

[0007] As a further aspect of the present invention: the heating element includes an eccentric sleeve disposed inside the embossing cylinder and rotatably sleeved on a rotating shaft, the lower end of the eccentric sleeve being rotatably and sealingly connected to the inner wall of the embossing cylinder; a heating cavity is provided inside the eccentric sleeve, and a counterweight is provided at the bottom of the eccentric sleeve.

[0008] As a further embodiment of the present invention: an oil inlet channel and an oil return channel are respectively provided at both ends of the rotating shaft; an oil inlet cavity is provided at the end of the oil inlet channel; an oil outlet channel communicating with the oil inlet cavity is eccentrically provided inside the rotating shaft; and a plurality of oil outlet holes communicating with the interior of the heating cavity are provided along the axial direction of the oil outlet channel; an oil return cavity is provided at the end of the oil return channel; and an oil return channel communicating with the oil return cavity is eccentrically provided inside the rotating shaft; and a plurality of oil return holes communicating with the interior of the heating cavity are provided along the axial direction of the oil return channel.

[0009] As a further embodiment of the present invention: the heating element further includes an oil inlet sleeve and an oil return sleeve fixedly disposed on the first lifting seats on both sides. The oil inlet sleeve is rotatably and sealedly connected to one end of the rotating shaft with an oil inlet channel, and the oil inlet sleeve is provided with an oil inlet nozzle communicating with the oil inlet channel; the oil return sleeve is rotatably and sealedly connected to one end of the rotating shaft with a return oil channel, and the oil return sleeve is provided with an oil return nozzle communicating with the return oil channel.

[0010] As a further aspect of the present invention: the pre-pressure traction unit includes a second support frame fixed on the frame, a second support roller rotatably mounted inside the second support frame, and the second support roller being connected to the output end of the drive motor via a transmission belt; a second elastic clamping member is provided directly above the second support roller, and a pre-pressure roller adapted to the second support roller is rotatably mounted on the second elastic clamping member; traction rollers and support plates are provided at both ends of the second support frame.

[0011] As a further aspect of the present invention: the second elastic clamping member includes a second fixed seat symmetrically fixed on both sides of the second support frame and a second lifting seat slidably embedded in the second support frame on the same side, the pre-pressing roller is rotatably mounted on the second lifting seat; a second sleeve is provided on the second fixed seat, a second sliding rod is vertically mounted on the second lifting seat and movably passes through the second sleeve, a second spring is sleeved on the second sliding rod, and the second sliding rod is located between the second fixed seat and the second lifting seat.

[0012] As a further aspect of the present invention: the correction paving unit includes an elastic pressing member disposed on the pallet, a linkage trigger member disposed below the elastic pressing member, and a paving member disposed at the bottom of the linkage trigger member that contacts the upper surface of the tablecloth.

[0013] As a further embodiment of the present invention: the elastic pressing member includes guide rods vertically fixed to both sides of the support plate, a sliding frame is slidably sleeved on the guide rods, a limit plate is provided at the top of the guide rods, and a pressing spring is slidably sleeved on the guide rods, the pressing spring being located between the sliding frame and the limit plate; The linkage trigger includes two sets of symmetrically arranged L-shaped brackets. The L-shaped brackets have vertical and horizontal sliding grooves. A vertical slider is slidably embedded in the vertical sliding groove and is fixedly connected to the sliding frame on the same side. A horizontal slider is slidably embedded in the horizontal sliding groove and a connecting rod is hinged between the vertical slider and the horizontal slider. The paving component includes a mounting plate fixedly connected to a corresponding transverse slider. A rotating seat is rotatably provided at the bottom of the mounting plate, and a rolling wheel is rotatably mounted on the rotating seat.

[0014] The beneficial effects of this invention are: By setting up a pre-compression traction unit, the tablecloth unwound from the roll is actively pulled and pre-flattened, which can effectively eliminate residual stress such as warping and curling caused by long-term winding and storage of the tablecloth, and prevent the uneven state from being transmitted to the embossing station, thereby reducing the occurrence rate of embossing defects. A correction and spreading unit is introduced between pre-pressing and embossing. This unit applies pressing and horizontal pushing forces symmetrically on both sides perpendicular to the feed direction of the tablecloth. On the one hand, it forces the wrinkles or wavy deformation of the spreading tablecloth surface to enter the embossing unit in a fully horizontally extended form. On the other hand, it corrects the lateral offset of the tablecloth generated during continuous feeding in real time, ensuring that the printed pattern on the embossing roller and the edge of the tablecloth are always accurately aligned, thereby improving the repeatability and overall consistency of the embossing pattern. The embossing unit uses a first elastic clamping element to apply vertically downward elastic pressure to the embossing roller, so that the bonding pressure between the embossing roller and the first support roller can be automatically fine-tuned according to the thickness of the tablecloth, avoiding rigid over-pressure or insufficient pressure; at the same time, the drive motor drives the first support roller to rotate actively, and the tablecloth and the embossing roller move synchronously through friction, eliminating the slippage or speed fluctuation that may occur in traditional driven embossing rollers, ensuring uniform embossing depth and clear and complete texture; By heating only the bottom area of ​​the embossing roller with the heating element, the heat is precisely concentrated near the contact line between the embossing roller and the tablecloth, rather than heating the entire embossing roller or tablecloth. This localized and rapid heating method can quickly improve the plasticity of the PVC tablecloth surface, enhance the material flow and texture filling ability during embossing, and avoid energy waste and tablecloth deformation risks caused by heat diffusion to non-contact areas. It achieves energy saving and efficiency while ensuring excellent embossing effect. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention; Figure 3 This is a schematic diagram of the embossing unit in the present invention; Figure 4 This is a schematic diagram of the structure of the first elastic clamping member in this invention; Figure 5 This is a cross-sectional view of the embossing roller and heating element in this invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the cross-sectional structure of the embossing roller in this invention; Figure 8 This is a schematic diagram of the preload traction unit in this invention; Figure 9 This is a schematic diagram of the preload traction unit from another perspective in this invention; Figure 10 This is a schematic diagram of the state of the correction paving unit correcting the deviation of the tablecloth in this invention; Figure 11 This is a schematic diagram of the structure of the correction paving unit in this invention.

[0017] In the picture: 100. Rack; 200. Preload traction unit; 210. Second support frame; 220. Second support roller; 230. Second elastic clamping element; 231. Second fixed seat; 232. Second lifting seat; 233. Second sleeve; 234. Second slide rod; 235. Second spring; 240. Preload roller; 250. Traction roller; 260. Support plate; 300, Embossing unit; 310, First support frame; 320, First support roller; 330, Drive motor; 331, Transmission belt; 340, First elastic clamping element; 341, First fixed seat; 342, First lifting seat; 343, First sleeve; 344, First slide rod; 345, First spring; 350, Embossing roller; 351, Rotating shaft; 3511, Oil inlet; 3512. 3513 Oil inlet chamber; 3514 Oil outlet channel; 3515 Oil outlet hole; 3516 Oil return channel; 3517 Oil return chamber; 3518 Oil return channel; 352 Embossing cylinder; 360 Heating element; 361 Eccentric sleeve; 362 Heating chamber; 363 Counterweight; 364 Oil inlet sleeve; 365 Oil inlet nozzle; 366 Oil return sleeve; 367 Oil return nozzle; 400. Correction paving unit; 410. Elastic pressure component; 411. Guide rod; 412. Sliding frame; 413. Limiting plate; 414. Pressure spring; 420. Linkage trigger; 421. L-shaped bracket; 422. Vertical chute; 423. Horizontal chute; 424. Vertical slider; 425. Horizontal slider; 426. Connecting rod; 430. Paving component; 431. Mounting plate; 432. Rotating seat; 433. Roller; 500. Tablecloth. Detailed Implementation

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0019] Please see Figure 1 and Figure 2 This invention discloses an embossing device for processing printed and embossed PVC tablecloths, which is applied to the embossing processing of tablecloths 500. It includes a frame 100, a pre-pressing and traction unit 200, an embossing unit 300, and a correction and spreading unit 400. The pre-pressing and traction unit 200 is disposed on one side of the frame 100 and is used to pre-press and traction the tablecloth 500. Please see Figure 3The embossing unit 300 is disposed on the other side of the frame 100, including a first support frame 310 fixed on the frame 100 and a first support roller 320 rotatably mounted on the first support frame 310. A drive motor 330 for driving the first support roller 320 is mounted on one side of the first support frame 310. A first elastic clamping member 340 is disposed on the top of the first support frame 310. An embossing roller 350 adapted to the first support roller 320 is rotatably mounted on the first elastic clamping member 340. A heating member 360 communicating with the embossing roller 350 is disposed on the side of the first support frame 310. The correction paving unit 400 is located between the pre-compression traction unit 200 and the embossing unit 300, and is used to perform correction paving on the tablecloth 500 that passes through.

[0020] Specifically, the tablecloth 500 is fed into the pre-compression traction unit 200 from one side of the frame 100. The pre-compression traction unit 200 pulls and pre-compresses the tablecloth 500 as it passes through, preventing warping of the tablecloth 500 as it is unwound from the drum, which would affect subsequent embossing. Then, as the tablecloth 500 passes through the correction and spreading unit 400, the correction and spreading unit 400 presses and pushes the tablecloth 500 horizontally to both sides perpendicular to the feed direction, ensuring the tablecloth 500 remains horizontally extended as it enters the embossing unit 300. This also prevents the tablecloth 500 from shifting to one side during continuous feeding, which would affect embossing accuracy. The tablecloth 500 is then fed from the first support roller 320 and the pressing... The embossing rollers 350 pass between each other, and the first elastic clamping member 340 applies vertical downward pressure to the embossing rollers 350, thereby pressing the tablecloth 500 tightly onto the first support roller 320. At the same time, the drive motor 330 drives the first support roller 320 to rotate. Under the action of friction, the tablecloth 500 and the embossing rollers 350 move synchronously, thereby using the pattern on the embossing rollers 350 to emboss the upper surface of the tablecloth 500. During the embossing process, the heating member 360 heats only the bottom of the embossing rollers 350, thereby concentrating the heat in the contact area between the embossing rollers 350 and the tablecloth 500, improving the softening effect of the tablecloth 500, and further enhancing the embossing effect.

[0021] It should be noted that by setting the pre-pressing traction unit 200, the tablecloth 500 unwound from the drum is actively pulled and pre-pressed, which can effectively eliminate residual stress such as warping and curling caused by long-term winding and storage of the tablecloth, and prevent the uneven state from being transmitted to the embossing station, thereby reducing the occurrence rate of embossing defects. A correction spreading unit 400 is introduced between pre-pressing and embossing. This unit applies pressing and horizontal pushing forces symmetrically on both sides perpendicular to the feeding direction of the tablecloth 500. On the one hand, it forces the wrinkles or wavy deformation of the spreading tablecloth surface so that it enters the embossing unit 300 in a fully horizontally extended form. On the other hand, it corrects the lateral offset of the tablecloth generated during continuous feeding in real time, ensuring that the printed pattern on the embossing roller 350 and the edge of the tablecloth 500 are always accurately aligned, thereby improving the repeatability and overall consistency of the embossing pattern. The embossing unit 300 uses a first elastic clamping member 340 to apply vertically downward elastic pressure to the embossing roller 350, so that the bonding pressure between the embossing roller 350 and the first support roller 320 can be automatically fine-tuned according to the thickness of the tablecloth 500, avoiding rigid over-pressure or insufficient pressure; at the same time, the drive motor 330 drives the first support roller 320 to rotate actively, and through friction, drives the tablecloth 500 and the embossing roller 350 to move synchronously, eliminating the slippage or speed fluctuation that may occur in traditional driven embossing rollers, ensuring uniform embossing depth and clear and complete texture; By heating only the bottom area of ​​the embossing roller 350 with the heating element 360, the heat is precisely concentrated near the contact line between the embossing roller 350 and the tablecloth 500, rather than heating the embossing roller or the tablecloth as a whole. This localized and rapid heating method can quickly improve the plasticity of the PVC tablecloth surface, enhance the material flow and texture filling ability during embossing, and avoid the energy waste and tablecloth deformation risk caused by heat diffusion to non-contact areas. It achieves energy saving and efficiency while ensuring excellent embossing effect.

[0022] In one embodiment, please refer to Figure 4 The first elastic clamping member 340 includes a first fixed seat 341 symmetrically fixed on both sides of the first support frame 310 and a first lifting seat 342 slidably embedded in the first support frame 310 on the same side. The embossing roller 350 is rotatably mounted on the first lifting seat 342. A first sleeve 343 is provided on the first fixed seat 341. A first sliding rod 344 that movably passes through the first sleeve 343 is vertically mounted on the first lifting seat 342. A first spring 345 is sleeved on the first sliding rod 344. The first spring 345 is located between the first fixed seat 341 and the first lifting seat 342.

[0023] Specifically, the first lifting seat 342 is pushed to slide vertically downward along the first support frame 310 by the elastic force of the first spring 345, thereby applying a vertical downward thrust to the embossing roller 350 so that the embossing roller 350 presses the tablecloth 500 tightly onto the first support roller 320.

[0024] It should be noted that the elastic force of the first spring 345 acts on the first lifting seat 342, pushing the embossing roller 350 to slide vertically downward along the first support frame 310, so that the embossing roller 350 and the first support roller 320 form an elastic pressing. This structure can automatically adjust the pressing force according to the thickness fluctuation of the tablecloth 500, avoiding excessive or insufficient local pressure caused by rigid pressing, thereby ensuring uniform embossing depth, clear and continuous texture, and improving embossing consistency and finished product yield. The first slide bar 344 slides through the first sleeve 343 and is fitted into the first support frame 310 with the first lifting seat 342, forming a double guiding constraint. This ensures that the embossing roller 350 always maintains a vertical posture during the lifting process, reducing friction or jamming caused by off-center load, while extending the service life of the spring and sliding parts and improving the long-term reliability of the device.

[0025] Further, please refer to Figure 5 , Figure 6 and Figure 7 The embossing roller 350 includes a rotating shaft 351 rotatably mounted on the first lifting seat 342, and an embossing cylinder 352 is fixedly sleeved on the rotating shaft 351. The heating element 360 includes an eccentric sleeve 361 disposed inside the embossing cylinder 352 and rotatably sleeved on the rotating shaft 351. The lower end of the eccentric sleeve 361 is rotatably and sealingly connected to the inner wall of the embossing cylinder 352. A heating chamber 362 is provided inside the eccentric sleeve 361, and a counterweight 363 is provided at the bottom of the eccentric sleeve 361.

[0026] Specifically, since the bottom of the eccentric sleeve 361 is equipped with a counterweight 363, the center of gravity of the eccentric sleeve 361 is always located below the axis of the rotating shaft 351. In this way, when the rotating shaft 351 and the embossing cylinder 352 rotate synchronously, the eccentric sleeve 361 also rotates synchronously relative to the rotating shaft 351, so that the eccentric sleeve 361 always maintains a vertically hanging posture, so that the heating chamber 362 inside is always in the area where the embossing cylinder 352 contacts the tablecloth 500. By continuously circulating heating oil through the heating element 360 to the heating chamber 362, the area in contact between the embossing cylinder 352 and the tablecloth 500 can be locally and specifically heated.

[0027] It is worth noting that an eccentric sleeve 361 is set inside the embossing cylinder 352, and a counterweight 363 is installed at the bottom of the sleeve. This ensures that the center of gravity of the eccentric sleeve 361 is always located below the axis of the rotating shaft 351. When the embossing roller 350 rotates, the eccentric sleeve 361 maintains a vertically hanging posture under the action of gravity, so that the heating chamber 362 inside is always aligned with the contact area between the embossing cylinder 352 and the tablecloth 500, which can realize real-time synchronization between the heating area and the embossing area.

[0028] Furthermore, please refer to Figure 6The rotating shaft 351 has an oil inlet channel 3511 and an oil return channel 3515 at both ends. The oil inlet channel 3511 has an oil inlet cavity 3512 at its end. The rotating shaft 351 has an oil outlet channel 3513 that communicates with the oil inlet cavity 3512 and is eccentrically arranged inside the rotating shaft 351. The oil outlet channel 3513 has several oil outlet holes 3514 that communicate with the interior of the heating cavity 362 along the axial direction. The oil return channel 3515 has an oil return cavity 3516 at its end. The rotating shaft 351 has an oil return channel 3517 that communicates with the oil return cavity 3516 and is eccentrically arranged inside the rotating shaft 351. The oil return channel 3517 has several oil return holes 3518 that communicate with the interior of the heating cavity 362 along the axial direction. Please see Figure 5 The heating element 360 also includes an oil inlet sleeve 364 and an oil return sleeve 366 fixedly mounted on the first lifting seats 342 on both sides. The oil inlet sleeve 364 is rotatably and sealedly connected to one end of the rotating shaft 351 where an oil inlet channel 3511 is provided. The oil inlet sleeve 364 is provided with an oil inlet nozzle 365 communicating with the oil inlet channel 3511. The oil return sleeve 366 is rotatably and sealedly connected to one end of the rotating shaft 351 where a oil return channel 3515 is provided. The oil return sleeve 366 is provided with an oil return nozzle 367 communicating with the oil return channel 3515.

[0029] Specifically, heating oil is continuously introduced into the oil inlet channel 3511 through the oil inlet nozzle 365 on the oil inlet sleeve 364. Then, the oil enters the oil outlet channel 3513 through the oil inlet chamber 3512 and enters the heating chamber 362 through each oil outlet hole 3514, so as to continuously heat the local area of ​​the embossing cylinder 352 that has rotated to the bottom of the rotating shaft 351. Then, the oil in the heating chamber 362 that has undergone heat exchange enters the oil return channel 3517 through each oil return hole 3518, then flows into the oil return channel 3515 through the oil return chamber 3516, and finally flows out from the oil return nozzle 367 of the oil return sleeve 366.

[0030] It is worth noting that the heating oil is precisely delivered into the heating chamber 362 through the oil inlet channel 3511, the oil outlet channel 3513, and the oil outlet hole 3514. After heat exchange, the oil is discharged through the oil return hole 3518, the oil return channel 3517, and the oil return channel 3515, forming a closed-loop circulation. The heat is concentrated only on the contact strip at the bottom of the embossing cylinder 352, avoiding the energy waste caused by overall heating and the risk of tablecloth heat deformation. At the same time, the embossing temperature can be precisely controlled by the oil temperature, which is suitable for PVC tablecloths of different materials and thicknesses. The rotating shaft 351 is equipped with an oil inlet sleeve 364 and an oil return sleeve 366 at both ends, which are rotatably and sealed to the rotating shaft 351 to achieve dynamic oil supply. The oil outlet channel 3513 and the oil return channel 3517 arranged eccentrically inside the rotating shaft 351, together with the axial multi-hole distribution, ensure that the heating oil is evenly filled into the heating chamber 362, supports stable hot oil delivery under the high-speed rotation of the embossing roller 350, and is suitable for long-term continuous production.

[0031] In yet another embodiment, please refer to Figure 8 and Figure 9 The preload traction unit 200 includes a second support frame 210 fixed on the frame 100, a second support roller 220 rotatably mounted inside the second support frame 210, and the second support roller 220 being connected to the output end of the drive motor 330 via a transmission belt 331; a second elastic clamping member 230 is provided directly above the second support roller 220, and a preload roller 240 adapted to the second support roller 220 is rotatably mounted on the second elastic clamping member 230; traction rollers 250 and support plates 260 are provided at both ends of the second support frame 210. Specifically, the unwound tablecloth 500 is guided and supported by the traction roller 250 and the support plate 260 to be pulled between the second support roller 220 and the pre-pressure roller 240. The second support roller 220 is driven to rotate synchronously by the drive motor 330, and the second elastic clamping member 230 applies vertical downward pressure to the pre-pressure roller 240. When the tablecloth 500 passes between the second support roller 220 and the pre-pressure roller 240, the tablecloth 500 is pre-pressed by the pre-pressure roller 240.

[0032] It should be noted that the second support roller 220 is connected to the drive motor 330 via the transmission belt 331 and rotates synchronously with the embossing unit 300. After the unwound tablecloth 500 is guided by the traction roller 250 and the support plate 260, it is elastically pressed and pre-pressed by the second support roller 220 and the pre-pressing roller 240, which can effectively flatten the wave warping caused by long-term winding. At the same time, the active traction reduces uneven tension, providing a flat and low-stress blank for subsequent correction, paving and embossing.

[0033] Further, please refer to Figure 9 The second elastic clamping member 230 includes a second fixed seat 231 symmetrically fixed on both sides of the second support frame 210 and a second lifting seat 232 slidably embedded in the second support frame 210 on the same side. The pre-pressure roller 240 is rotatably mounted on the second lifting seat 232. A second sleeve 233 is provided on the second fixed seat 231. A second sliding rod 234 that movably passes through the second sleeve 233 is vertically installed on the second lifting seat 232. A second spring 235 is sleeved on the second sliding rod 234. The second sliding rod 234 is located between the second fixed seat 231 and the second lifting seat 232.

[0034] Specifically, the second lifting seat 232 is pushed to slide vertically downward along the second support frame 210 by the elastic force of the second spring 235, thereby applying a vertical downward thrust to the pre-pressure roller 240 so that the pre-pressure roller 240 presses the tablecloth 500 tightly onto the second elastic pressing member 230.

[0035] It is worth noting that the second elastic clamping member 230 uses the second spring 235 to push the second lifting seat 232, so that the pre-pressure roller 240 applies controllable elastic pressure to the tablecloth 500, avoiding rigid crushing that causes indentations or thinning of the thickness. With the guide structure of the second fixed seat 231, the second sleeve 233, and the second slide bar 234, the pre-pressure roller 240 rises and falls smoothly and is accurately aligned, effectively improving the consistency of the pre-pressure effect. The support plate 260 provides a horizontal support surface, which, together with the guiding action of the traction roller 250, keeps the tablecloth 500 in a straight position before entering the pre-pressing zone, reducing the feed deviation caused by gravity sagging or lateral swaying, thereby indirectly improving the alignment accuracy of the pattern in the subsequent embossing.

[0036] In further embodiments, please refer to Figure 10 The correction paving unit 400 includes an elastic pressing member 410 disposed on the support plate 260, a linkage trigger member 420 disposed below the elastic pressing member 410, and a paving member 430 disposed at the bottom of the linkage trigger member 420 that contacts the upper surface of the tablecloth 500. Specifically, the elastic pressing member 410 applies a vertically downward elastic pressing force to the paving member 430. Under the linkage triggering action of the linkage triggering member 420, the paving member 430 generates a horizontal thrust perpendicular to its feeding direction on the tablecloth 500, so that the surface of the tablecloth 500 is flat and stretched.

[0037] It should be noted that the elastic pressing member 410 applies vertically downward elastic pressure to the paving member 430. Through the mechanism conversion of the linkage trigger member 420, the paving member 430 generates horizontal thrust on both sides of the tablecloth 500 perpendicular to the feeding direction. The lateral extension of the tablecloth can be achieved by using only the weight of the device and the spring force, effectively eliminating wrinkles and folds, so that the tablecloth 500 enters the embossing station in a fully horizontally unfolded state. The linkage trigger 420 adopts a sliding linkage mechanism, which can automatically adjust the amplitude and force of horizontal paving according to the thickness of the tablecloth 500 and the downward stroke of the elastic pressure member 410. A thicker tablecloth generates greater vertical resistance, which in turn triggers a greater horizontal thrust, thereby achieving adaptive paving for tablecloths of different specifications.

[0038] Further, please refer to Figure 11 The elastic pressing member 410 includes guide rods 411 vertically fixed to both sides of the support plate 260. A sliding frame 412 is slidably sleeved on the guide rods 411. A limiting plate 413 is provided at the top of the guide rods 411. A pressing spring 414 is slidably sleeved on the guide rods 411. The pressing spring 414 is located between the sliding frame 412 and the limiting plate 413. The linkage trigger 420 includes two sets of symmetrically arranged L-shaped brackets 421. Each L-shaped bracket 421 has a vertical slide groove 422 and a horizontal slide groove 423. A vertical slider 424 is slidably embedded in the vertical slide groove 422 and is fixedly connected to the sliding frame 412 on the same side. A horizontal slider 425 is slidably embedded in the horizontal slide groove 423. A connecting rod 426 is hinged between the vertical slider 424 and the horizontal slider 425. The paving component 430 includes a mounting plate 431 fixedly connected to a corresponding transverse slider 425. A rotating seat 432 is rotatably provided at the bottom of the mounting plate 431, and a rolling roller 433 is rotatably mounted on the rotating seat 432.

[0039] Specifically, the sliding frame 412 is driven to slide vertically down the guide rod 411 by the elastic force of the compression spring 414, thereby causing the linkage trigger 420 and the paving component 430 to move downward as a whole until the roller 433 contacts the upper surface of the tablecloth 500. Then the sliding frame 412 drives the vertical slider 424 to continue to move downward. At this time, the L-shaped bracket 421 can no longer move downward, so the vertical slider 424 slides downward along the vertical groove 422. Under the transmission of the connecting rod 426, the horizontal slider 425 is driven to slide laterally along the horizontal groove 423, thereby driving the entire paving component 430 to move horizontally along one side perpendicular to the feed direction of the tablecloth 500, so as to spread the tablecloth 500 flat to both sides. During the horizontal movement of the paving component 430, the rotating seat 432 can rotate at a certain angle relative to the mounting plate 431, so that the roller 433 deflects adaptively, avoiding interference between the paving component 430 and the tablecloth 500.

[0040] It is worth noting that the pressure spring 414 pushes the sliding frame 412 down along the guide rod 411, first causing the roller 433 to contact the upper surface of the tablecloth 500; as it continues to press down, the vertical slider 424 slides along the vertical groove 422, and drives the horizontal slider 425 to move horizontally along the horizontal groove 423 through the connecting rod 426, thereby driving the paving component 430 to push to both sides. This sequence of actions ensures that the roller 433 presses down on the tablecloth before paving, preventing the tablecloth from shifting, and making the paving action smooth and controllable. The bottom of the paving component 430 is equipped with a rotating seat 432 and a roller 433. During the horizontal paving process, the rotating seat 432 can be deflected at a certain angle relative to the mounting plate 431, so that the roller 433 always rolls in the direction of minimum frictional resistance, avoiding scratches or drag interference on the surface of the tablecloth 500. At the same time, the circular contact surface of the roller 433 reduces the sliding friction with the tablecloth, and evenly transmits the paving force to the cloth surface, improving the surface quality. Two sets of L-shaped brackets 421, vertical sliders 424, horizontal sliders 425 and connecting rods 426 are symmetrically arranged. When the sliding frame 412 is pressed down, it simultaneously drives the spreading parts 430 on both sides to move horizontally in opposite directions, thereby evenly spreading the tablecloth 500 from the center to both sides. This symmetrical structure effectively avoids the lateral displacement of the tablecloth caused by pushing from one side, ensuring that the fabric is in a completely centered and taut state before embossing, effectively improving the centering and alignment accuracy of subsequent embossing.

[0041] The specific embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. An embossing device for processing printed and embossed PVC tablecloths, applied to the embossing processing of tablecloths (500), characterized in that, include: Rack (100); A pre-compression traction unit (200) is provided on one side of the frame (100) for pre-compressing and traction of the tablecloth (500); An embossing unit (300) is disposed on the other side of a frame (100) and includes a first support frame (310) fixed to the frame (100) and a first support roller (320) rotatably mounted on the first support frame (310). A drive motor (330) for driving the first support roller (320) is mounted on one side of the first support frame (310). A first elastic clamping member (340) is disposed on the top of the first support frame (310). An embossing roller (350) adapted to the first support roller (320) is rotatably mounted on the first elastic clamping member (340). A heating member (360) communicating with the embossing roller (350) is disposed on the side of the first support frame (310). The correction paving unit (400) is located between the pre-compression traction unit (200) and the embossing unit (300) and is used to correct the paving of the tablecloth (500) that is passing through.

2. The embossing device for processing printed and embossed PVC tablecloths according to claim 1, characterized in that, The first elastic clamping member (340) includes a first fixed seat (341) symmetrically fixed on both sides of the first support frame (310) and a first lifting seat (342) slidably embedded in the first support frame (310) on the same side. The embossing roller (350) is rotatably mounted on the first lifting seat (342). A first sleeve (343) is provided on the first fixed seat (341). A first slide rod (344) that movably passes through the first sleeve (343) is vertically installed on the first lifting seat (342). A first spring (345) is sleeved on the first slide rod (344). The first spring (345) is located between the first fixed seat (341) and the first lifting seat (342).

3. The embossing device for processing printed and embossed PVC tablecloths according to claim 2, characterized in that, The embossing roller (350) includes a rotating shaft (351) rotatably mounted on a first lifting seat (342), and an embossing cylinder (352) is fixedly sleeved on the rotating shaft (351).

4. The embossing device for processing printed and embossed PVC tablecloths according to claim 3, characterized in that, The heating element (360) includes an eccentric sleeve (361) disposed inside the embossing cylinder (352) and rotatably sleeved on the rotating shaft (351). The lower end of the eccentric sleeve (361) is rotatably and sealingly connected to the inner wall of the embossing cylinder (352). A heating chamber (362) is provided inside the eccentric sleeve (361), and a counterweight (363) is provided at the bottom of the eccentric sleeve (361).

5. The embossing device for processing printed and embossed PVC tablecloths according to claim 4, characterized in that, The rotating shaft (351) has an oil inlet channel (3511) and an oil return channel (3515) at both ends. The oil inlet channel (3511) has an oil inlet cavity (3512) at its end. The rotating shaft (351) has an oil outlet channel (3513) eccentrically arranged inside the rotating shaft (351) that communicates with the oil inlet cavity (3512). The oil outlet channel (3513) has several oil outlet holes (3514) axially arranged that communicate with the interior of the heating cavity (362). The oil return channel (3515) has an oil return cavity (3516) at its end. The rotating shaft (351) has an oil return channel (3517) eccentrically arranged inside the rotating shaft (351) that communicates with the oil return cavity (3516). The oil return channel (3517) has several oil return holes (3518) axially arranged that communicate with the interior of the heating cavity (362).

6. The embossing device for processing printed and embossed PVC tablecloths according to claim 5, characterized in that, The heating element (360) further includes an oil inlet sleeve (364) and an oil return sleeve (366) fixedly mounted on the first lifting seats (342) on both sides. The oil inlet sleeve (364) is rotatably and sealed to one end of the rotating shaft (351) where an oil inlet channel (3511) is opened. An oil inlet nozzle (365) communicating with the oil inlet channel (3511) is provided on the oil inlet sleeve (364). The oil return sleeve (366) is rotatably and sealed to one end of the rotating shaft (351) where a oil return channel (3515) is opened. An oil return nozzle (367) communicating with the oil return channel (3515) is provided on the oil return sleeve (366).

7. The embossing device for processing printed and embossed PVC tablecloths according to claim 1, characterized in that, The preload traction unit (200) includes a second support frame (210) fixed on the frame (100), a second support roller (220) is rotatably installed inside the second support frame (210), and the second support roller (220) is connected to the output end of the drive motor (330) via a transmission belt (331); a second elastic clamping member (230) is provided directly above the second support roller (220), and a preload roller (240) adapted to the second support roller (220) is rotatably installed on the second elastic clamping member (230); traction rollers (250) and support plates (260) are provided at both ends of the second support frame (210).

8. The embossing device for processing printed and embossed PVC tablecloths according to claim 7, characterized in that, The second elastic clamping member (230) includes a second fixed seat (231) symmetrically fixed on both sides of the second support frame (210) and a second lifting seat (232) slidably embedded in the second support frame (210) on the same side. The pre-pressing roller (240) is rotatably mounted on the second lifting seat (232). A second sleeve (233) is provided on the second fixed seat (231). A second slide rod (234) that movably passes through the second sleeve (233) is vertically installed on the second lifting seat (232). A second spring (235) is sleeved on the second slide rod (234). The second slide rod (234) is located between the second fixed seat (231) and the second lifting seat (232).

9. An embossing device for processing printed and embossed PVC tablecloths according to claim 7, characterized in that, The correction paving unit (400) includes an elastic pressing member (410) disposed on a pallet (260), a linkage trigger member (420) disposed below the elastic pressing member (410), and a paving member (430) disposed at the bottom of the linkage trigger member (420) that contacts the upper surface of the tablecloth (500).

10. An embossing device for processing printed and embossed PVC tablecloths according to claim 9, characterized in that, The elastic pressing member (410) includes guide rods (411) vertically fixed on both sides of the support plate (260), a sliding frame (412) is slidably sleeved on the guide rods (411), a limiting plate (413) is provided at the top of the guide rods (411), and a pressing spring (414) is slidably sleeved on the guide rods (411), the pressing spring (414) being located between the sliding frame (412) and the limiting plate (413); The linkage trigger (420) includes two sets of symmetrically arranged L-shaped brackets (421). The L-shaped brackets (421) have vertical sliding grooves (422) and horizontal sliding grooves (423). A vertical slider (424) is slidably embedded in the vertical sliding groove (422), and the vertical slider (424) is fixedly connected to the sliding frame (412) on the same side. A horizontal slider (425) is slidably embedded in the horizontal sliding groove (423), and a connecting rod (426) is hinged between the vertical slider (424) and the horizontal slider (425). The paving component (430) includes a mounting plate (431) fixedly connected to a corresponding transverse slider (425). A rotating seat (432) is rotatably provided at the bottom of the mounting plate (431), and a rolling roller (433) is rotatably mounted on the rotating seat (432).

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