PVC artificial leather embossing machine

Abstract

The present application relates to PVC artificial leather related technical field, disclose a kind of PVC artificial leather embossing machine, the present application is lifted by screw drive sleeve and screw rod, utilize the lifting action of lifting press plate in traditional embossing process, a series of transmission mechanism is used to drive the rolling mechanism to the leather grain of PVC leather and is pressed, also by push injection piston pump to control the spraying of embossing liquid, simplify the driving device, reduce cost, also strengthen the action synchronism of hydraulic press, rolling mechanism and spray mechanism, reduce the generation of defective products.

Description

Technical Field

[0001] The invention relates to the technical field related to PVC artificial leather, in particular to a PVC artificial leather embossing machine. Background Art

[0002] PVC artificial leather is a synthetic material commonly used to make products similar to genuine leather, such as leather goods, shoes, clothing, furniture, car seat coverings, etc. It is composed of polyvinyl chloride resin and other additives and is made through a special process. It has a leather-like appearance and texture, and has good wear resistance, stain resistance and water resistance. PVC artificial leather originally has no texture, and it needs to be pressed during the processing to give it natural leather-like textures as well as designed labels and patterns.

[0003] When pressing the texture of PVC artificial leather, traditional embossing machines cannot produce leather texture and label patterns at the same time. Different equipment needs to be used in steps, resulting in high processing costs. At the same time, traditional embossing machines require manual operation for loading and unloading. In order to ensure the clarity of the pattern, embossing liquid needs to be sprayed for lubrication and shaping, which results in low processing efficiency and low safety. Summary of the Invention

[0004] The object of the present invention is to provide a PVC artificial leather embossing machine to solve the problem raised in the above background art that the current traditional embossing machine can distinguish and simultaneously produce leather patterns and label patterns.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PVC artificial leather embossing machine, comprising a hydraulic press, wherein the hydraulic press is provided with a hydraulically driven lifting and lowering plate, the lifting and lowering plate being used to apply pressure to the pattern mold and leather stacked together to emboss the pattern, a heated embossing table being provided below the lifting and lowering plate, the heated embossing table being used to heat the leather to facilitate pattern forming, a rolling mechanism being provided on one side of the heated embossing table for pre-pressing the simulated texture of the leather, a fixed embossing roller and a movable embossing roller being provided in the rolling mechanism, the movable embossing roller embossing the pattern by lifting and lowering the plate The height is adjusted by a lowering adjustment mechanism to control the pressing force. A spiral driving sleeve is provided on one side of the lifting and lowering pressure plate. A vertical spiral rod is movably connected to one side of the hydraulic press through a bearing. The spiral driving sleeve is used to drive the spiral rod to rotate when the lifting and lowering pressure plate rises. The lower end of the spiral rod is fixedly connected to a first bevel gear, which is engaged with a second bevel gear. One side of the second bevel gear is fixedly connected to a first pulley. One end of the fixed embossing roller is fixedly connected to a second pulley. The first pulley and the second pulley are connected by a synchronous belt drive to drive the fixed embossing roller to rotate.

[0006] An eccentric wheel is fixedly connected to one side of the first pulley, and the eccentric wheel is connected to a push piston pump through a connecting rod transmission mechanism. One end of the push piston pump is connected to the embossing liquid storage tank under the hydraulic press for extracting the embossing liquid, and the other end of the push piston pump is connected to the spray mechanism on one side of the rolling mechanism for spraying the embossing liquid onto the leather. The spray mechanism adjusts the distance from the leather through the spray adjustment mechanism.

[0007] Furthermore, the lifting and adjusting mechanism includes a lifting handwheel, one end of the lifting handwheel is fixedly connected to a transmission shaft through a keyway, the transmission shaft is movably installed above the rolling mechanism through a bearing seat, a worm is fixedly connected to the transmission shaft, the worm is engaged with a worm wheel, a screw nut is nested in the worm wheel, a fixed seat is rotatably connected to the bottom of the screw nut, the fixed seat is fixedly installed above the rolling mechanism by bolts, a lifting screw is passed through the screw nut, a lifting adjustment plate is provided above the movable embossing roller, the movable embossing roller is movably connected to the lifting adjustment plate through bearings at both ends, and the lower end of the lifting screw is movably connected to the lifting adjustment plate through a bearing.

[0008] Furthermore, the worm, worm wheel, screw nut, fixing seat and lifting screw are each provided in two groups, and are symmetrically arranged at both ends of the movable embossing roller.

[0009] Furthermore, the spiral drive sleeve includes a fixed sleeve, which is fixedly installed on one side of the lifting and lowering plate by bolts, an I-shaped sleeve is nested in the fixed sleeve, and a spiral sleeve is nested in the I-shaped sleeve. A first ratchet is processed above the fixed sleeve, and a second ratchet is processed on the I-shaped sleeve. A circle of balls is provided below the fixed sleeve, and a rolling track groove is embedded in the I-shaped sleeve.

[0010] Furthermore, the spiral rod spirals upward in a clockwise direction, and the tooth tip of the second ratchet tooth faces in a clockwise direction.

[0011] Furthermore, the internal through hole of the spiral sleeve is consistent with the spiral rod and both are spiral-shaped. The fixed sleeve is slidably connected to the spiral rod, and the fixed sleeve is fixedly connected to the fixed sleeve by interference fit.

[0012] Furthermore, the push-in piston pump includes a piston cylinder, which is vertically fixed on one side of the embossing liquid storage tank, a sealing piston is arranged in the piston cylinder, a liquid extraction port is opened on one side of the lower end of the piston cylinder, the liquid extraction port is connected to the embossing liquid storage tank through a pipeline, a liquid injection port is opened on one side of the liquid extraction port, and the liquid injection port is connected to the spray mechanism through a pipeline, and a one-way valve is arranged below the liquid extraction port and the liquid injection port of the spray mechanism, and the one-way valve at the liquid extraction port only allows the embossing liquid to flow into the piston cylinder, and the one-way valve at the liquid injection port only allows the embossing liquid to flow out of the piston cylinder.

[0013] Furthermore, the connecting rod transmission mechanism includes an eccentric rod, which is fixedly connected to the eccentric wheel by a thread, and the eccentric rod is located near the edge of the eccentric wheel. The eccentric rod is movably connected to a push-pull connecting rod through a rotating shaft, and one end of the push-pull connecting rod is movably connected to the sealing piston through a rotating shaft.

[0014] Furthermore, the spray mechanism includes a lower spray pipe and an upper spray pipe, and the upper spray pipe and the lower spray pipe are respectively located on the upper and lower sides of the gap between the fixed embossing roller and the movable embossing roller, and multiple groups of atomizing nozzles are fixedly connected to the upper spray pipe and the lower spray pipe, and a group of leather baffles are respectively provided below the upper spray pipe and above the lower spray pipe, and an embossing liquid collection tank is provided below the rolling mechanism.

[0015] Furthermore, the spray adjustment mechanism includes an adjusting screw, a group of adjusting screws are provided at both ends of the upper spray pipe and the lower spray pipe, an adjusting handwheel is provided below the adjusting screw, and a threaded lifting block is connected to the adjusting screw through a thread, and the upper spray pipe, the lower spray pipe and the leather baffle are all fixedly mounted on the threaded lifting block.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention utilizes the lifting action of the lifting and lowering pressing plate in the traditional embossing process through a spiral driving sleeve and a spiral rod, drives the rolling mechanism to press the leather grain of PVC leather through a series of transmission mechanisms, and controls the spraying of the embossing liquid through a push-in piston pump, thereby streamlining the driving device and reducing costs. At the same time, it also strengthens the synchronization of the actions of the hydraulic press, the rolling mechanism and the spray mechanism, and reduces the generation of defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 For the appearance structure diagram Figure 1 ;

[0019] Figure 2 Schematic diagram of the appearance structure Figure 2 ;

[0020] Figure 3 Schematic diagram of the rolling mechanism structure;

[0021] Figure 4 Schematic diagram of the spiral drive sleeve structure;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the spiral drive sleeve;

[0023] Figure 6 Schematic diagram of the screw drive structure;

[0024] Figure 7 for Figure 6 A in the middle is an enlarged structural diagram;

[0025] Figure 8 This is a schematic diagram of the injection piston pump structure;

[0026] Figure 9 for Figure 8 Enlarged structural diagram at point B in the middle.

[0027] Reference numerals in the figure: 1, hydraulic press; 2, lifting plate; 3, heated embossing table; 4, rolling mechanism; 401, fixed embossing roller; 402, movable embossing roller; 5, lifting adjustment mechanism; 501, lifting handwheel; 502, transmission shaft; 503, worm; 504, worm gear; 505, lead screw nut; 506, fixed seat; 507, lifting screw; 6, lifting adjustment plate; 7, screw drive sleeve; 701, fixed sleeve; 702, I-shaped sleeve; 703, screw sleeve; 704, first ratchet; 705, second ratchet; 706, ball bearing; 707, rolling track groove; 8, screw rod; 9, first bevel gear; 10. Second bevel gear; 11. First pulley; 12. Second pulley; 13. Eccentric wheel; 14. Connecting rod transmission mechanism; 1401. Eccentric rod; 1402. Push-pull connecting rod; 15. Push-in piston pump; 1501. Piston cylinder; 1502. Sealing piston; 1503. Liquid extraction port; 1504. Liquid injection port; 16. Embossing liquid storage tank; 17. Spray mechanism; 1701. Lower spray pipe; 1702. Upper spray pipe; 1703. Atomizing nozzle; 18. Spray adjustment mechanism; 1801. Adjusting screw; 1802. Adjusting hand wheel; 1803. Threaded lifting block; 19. Leather baffle; 20. Embossing liquid collecting tank. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0030] See also Figure 1 - Figure 7A PVC artificial leather embossing machine includes a hydraulic press 1. The hydraulic press 1 is provided with a hydraulically driven lifting plate 2. The lifting plate 2 is used to apply pressure to the pattern mold and leather stacked together to emboss the pattern. A heating embossing table 3 is provided below the lifting plate 2. The heating embossing table 3 is used to heat the leather to facilitate pattern forming. A rolling mechanism 4 is provided on one side of the heating embossing table 3 for pre-pressing the leather simulation texture. The rolling mechanism 4 is provided with a fixed embossing roller 401 and a movable embossing roller 402. The movable embossing roller 402 is adjusted in height by a lifting adjustment mechanism 5 to control To control the pressing force, a spiral drive sleeve 7 is provided on one side of the lifting and lowering plate 2, and a vertical spiral rod 8 is movably connected to one side of the hydraulic press 1 through a bearing. The spiral drive sleeve 7 is used to drive the spiral rod 8 to rotate when the lifting and lowering plate 2 rises. The lower end of the spiral rod 8 is fixedly connected to a first bevel gear 9, and the first bevel gear 9 is engaged with a second bevel gear 10. One side of the second bevel gear 10 is fixedly connected to a first pulley 11, and one end of the fixed embossing roller 401 is fixedly connected to a second pulley 12. The first pulley 11 and the second pulley 12 are connected by a synchronous belt drive, which is used to drive the fixed embossing roller 401 to rotate;

[0031] See also Figure 8 and Figure 9 An eccentric wheel 13 is fixedly connected to one side of the first pulley 11, and the eccentric wheel 13 is connected to a push piston pump 15 through a connecting rod transmission mechanism 14. One end of the push piston pump 15 is connected to the embossing liquid storage tank 16 below the hydraulic press 1 for extracting the embossing liquid, and the other end of the push piston pump 15 is connected to a spray mechanism 17 on one side of the rolling mechanism 4 for spraying the embossing liquid onto the leather. The spray mechanism 17 is adjusted to a distance from the leather through a spray adjustment mechanism 18.

[0032] Specifically, such as Figure 6 and Figure 7As shown, the lifting adjustment mechanism 5 includes a lifting handwheel 501, one end of the lifting handwheel 501 is fixedly connected to a transmission shaft 502 through a keyway, and the transmission shaft 502 is movably installed above the rolling mechanism 4 through a bearing seat, and two worms 503 are symmetrically arranged on the transmission shaft 502, each worm 503 is meshed with a worm wheel 504, and a screw nut 505 is nested inside each worm wheel 504, and each screw nut 505 is rotatably connected to a fixed seat 506 below, and the two fixed seats 506 are fixedly installed above the rolling mechanism 4 by bolts, and each screw nut 505 is penetrated by a lifting screw 507, and a lifting adjustment plate 6 is provided above the movable embossing roller 402, and the movable embossing roller 402 is supported by bearings at both ends. It is movably connected to the lifting adjustment plate 6, and the lower ends of the two lifting screw rods 507 are movably connected to the lifting adjustment plate 6 through bearings. Therefore, when the lifting handwheel 501 is rotated, the two worms 503 can be driven to rotate at the same time, thereby driving the two worm wheels 504 to rotate synchronously. Since the screw nut 505 is nested and fixedly installed in the worm wheel 504, the screw nut 505 rotates with the worm wheel 504. Since the worm wheel 504 is rotatably connected to the fixed seat 506 fixed above the rolling mechanism 4, the screw nut 505 will drive the screw nut 505 to move up and down, and then drive the movable embossing roller 402 to move up and down through the lifting adjustment plate 6, adjust the gap between the movable embossing roller 402 and the fixed embossing roller 401, and thus adjust the rolling force. At the same time, since there are two groups of worm 503, worm wheel 504, screw nut 505, fixed seat 506 and lifting screw 507, and they are symmetrically arranged at both ends of the movable embossing roller 402, the gaps between the left and right ends of the movable embossing roller 402 and the fixed embossing roller 401 can be kept consistent when the movable embossing roller 402 is adjusted up and down.

[0033] Specifically, such as Figure 4 and Figure 5As shown, the spiral drive sleeve 7 includes a fixed sleeve 701, which is fixedly installed on one side of the lifting and lowering plate 2 by bolts, an I-shaped sleeve 702 is nested in the fixed sleeve 701, and a spiral sleeve 703 is nested in the I-shaped sleeve 702. A first ratchet 704 is processed on the top of the fixed sleeve 701, and a second ratchet 705 is processed on the I-shaped sleeve 702. A circle of balls 706 is provided below the fixed sleeve 701, and a rolling track groove 707 is embedded in the I-shaped sleeve 702. The screw rod 8 spirals upward in a clockwise direction, and the tooth tip of the second ratchet 705 is facing in a clockwise direction. The internal through hole of the spiral sleeve 703 is consistent with the screw rod 8, both are spiral, the fixed sleeve 701 is slidably connected to the screw rod 8, and the fixed sleeve 701 is interference fit with the fixed sleeve 701 With the fixed connection, when the lifting and lowering plate 2 drives the fixed sleeve 701 to rise, the first ratchet 704 and the second ratchet 705 engage with each other, so that the fixed sleeve 701 and the I-shaped sleeve 702 engage with each other, and the spiral sleeve 703 cannot rotate. In this way, when the spiral sleeve 703 rises, it will drive the spiral rod 8 to rotate, and the spiral rod 8 can drive the first pulley 11 to rotate through the cooperation of the first bevel gear 9 and the second bevel gear 10, and then drive the second pulley 12 and the fixed embossing roller 401 to rotate through the pulley transmission. The fixed embossing roller 401 and the movable embossing roller 402 cooperate to press the PVC artificial leather and roll out the leather texture, and at the same time flatten the leather to prevent curling when pressing the pattern texture. The leather can also be fed into the hydraulic press 1, which is safer and more efficient.

[0034] Specifically, such as Figure 8 and Figure 9As shown, the connecting rod transmission mechanism 14 includes an eccentric rod 1401, which is fixedly connected to the eccentric wheel 13 by a thread, and the eccentric rod 1401 is located on the eccentric wheel 13 near the edge, and the eccentric rod 1401 is movably connected to the push-pull connecting rod 1402 through a rotating shaft, and one end of the push-pull connecting rod 1402 is movably connected to the sealing piston 1502 through a rotating shaft, and the push-injection piston pump 15 includes a piston cylinder 1501, and the piston cylinder 1501 is vertically fixed on one side of the embossing liquid storage tank 16, and a sealing piston 1502 is provided in the piston cylinder 1501, and a liquid extraction port 1503 is provided on one side of the lower end of the piston cylinder 1501, and the liquid extraction port 1503 is connected to the embossing liquid storage tank 16 through a pipeline, and a liquid injection port 1504 is provided on one side of the liquid extraction port 1503, and the liquid injection port 1504 is connected to the spray mechanism 17 through a pipeline. A one-way valve is provided below the liquid injection port 1504, and the one-way valve at the liquid extraction port 1503 only allows the embossing liquid to flow into the piston cylinder 1501, and the one-way valve at the liquid injection port 1504 only allows the embossing liquid to flow out of the piston cylinder 1501. In this way, when the second bevel gear 10 drives the eccentric wheel 13 to rotate, the push-pull connecting rod 1402 can be driven up and down by the eccentric rod 1401, thereby driving the sealing piston 1502 to move up and down. When the sealing piston 1502 moves up, the one-way valve at the liquid injection port 1504 is closed, and the one-way valve at the liquid extraction port 1503 is opened, so that the embossing liquid in the embossing liquid storage tank 16 can be drawn into the piston cylinder 1501. When the sealing piston 1502 moves downward, the one-way valve at the liquid extraction port 1503 is closed, and the one-way valve at the liquid injection port 1504 is opened, so that the embossing liquid in the piston cylinder 1501 can be injected into the spray mechanism 17.

[0035] Specifically, such as Figure 8 and Figure 9 As shown, the spray mechanism 17 includes a lower spray pipe 1701 and an upper spray pipe 1702. The upper spray pipe 1702 and the lower spray pipe 1701 are respectively located on the upper and lower sides of the gap between the fixed embossing roller 401 and the movable embossing roller 402, and can spray both sides of the leather. A plurality of groups of atomizing nozzles 1703 are fixedly connected to the upper spray pipe 1702 and the lower spray pipe 1701, which can atomize the embossing liquid as much as possible and spray it more evenly. A group of leather baffles 19 are respectively provided below the upper spray pipe 1702 and above the lower spray pipe 1701 to prevent friction between the leather and the atomizing nozzle 1703. An embossing liquid collecting tank 20 for collecting waste liquid is provided below the rolling mechanism 4.

[0036] Specifically, such as Figure 3 and Figure 8As shown, the spray adjustment mechanism 18 includes an adjusting screw 1801, and a group of adjusting screws 1801 are respectively provided at both ends of the upper spray pipe 1702 and the lower spray pipe 1701, and an adjusting handwheel 1802 is provided below the adjusting screw 1801. The adjusting screw 1801 is connected to a threaded lifting block 1803 through a thread, and the upper spray pipe 1702, the lower spray pipe 1701 and the leather baffle 19 are all fixedly mounted on the threaded lifting block 1803. In this way, when the adjusting handwheels 1802 at both ends of the upper spray pipe 1702 and the lower spray pipe 1701 are rotated, the adjusting screw 1801 can be driven to rotate, and then the threaded lifting block 1803 can be driven to move up and down, so that the distance between the atomizing nozzle 1703 and the leather can be adjusted.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A PVC artificial leather embossing machine, comprising a hydraulic press (1), characterized in that: The hydraulic press (1) is provided with a hydraulically driven lifting plate (2), the lifting plate (2) is used to apply pressure to the pattern mold and leather stacked together to press the pattern, a heating embossing table (3) is provided below the lifting plate (2), the heating embossing table (3) is used to heat the leather to facilitate pattern forming, a rolling mechanism (4) is provided on one side of the heating embossing table (3) for pre-pressing the leather simulation texture, the rolling mechanism (4) is provided with a fixed embossing roller (401) and a movable embossing roller (402), the movable embossing roller (402) is adjusted in height by a lifting adjustment mechanism (5) to control the pressing force, and the lifting plate (2) is provided with a heating embossing table (3) on the lower side. A spiral drive sleeve (7) is provided on one side of the hydraulic press (1), and a vertical spiral rod (8) is movably connected to one side of the hydraulic press (1) through a bearing. The spiral drive sleeve (7) is used to drive the spiral rod (8) to rotate when the lifting plate (2) rises. The lower end of the spiral rod (8) is fixedly connected to a first bevel gear (9), and the first bevel gear (9) is engaged with a second bevel gear (10). One side of the second bevel gear (10) is fixedly connected to a first pulley (11), and one end of the fixed embossing roller (401) is fixedly connected to a second pulley (12). The first pulley (11) and the second pulley (12) are connected by a synchronous belt drive and are used to drive the fixed embossing roller (401) to rotate. One side of the first pulley (11) is fixedly connected to an eccentric wheel (13), and the eccentric wheel (13) is connected to a push piston pump (15) through a connecting rod transmission mechanism (14). One end of the push piston pump (15) is connected to an embossing liquid storage tank (16) below the hydraulic press (1) for extracting embossing liquid. The other end of the push piston pump (15) is connected to a spray mechanism (17) on one side of the rolling mechanism (4) for spraying embossing liquid onto the leather. The distance between the spray mechanism (17) and the leather is adjusted by a spray adjustment mechanism (18). The lifting and adjusting mechanism (5) comprises a lifting hand wheel (501), one end of the lifting hand wheel (501) is fixedly connected to a transmission shaft (502) via a keyway, the transmission shaft (502) is movably mounted above the rolling mechanism (4) via a bearing seat, a worm (503) is fixedly connected to the transmission shaft (502), the worm (503) is engaged with a worm wheel (504), a screw nut (505) is nested in the worm wheel (504), a fixed seat (506) is rotatably connected to the lower portion of the screw nut (505), the fixed seat (506) is fixedly mounted above the rolling mechanism (4) via bolts, a lifting screw (507) is passed through the screw nut (505), a lifting and adjusting plate (6) is provided above the movable embossing roller (402), the movable embossing roller (402) is movably connected to the lifting and adjusting plate (6) via bearings at both ends, and the lower end of the lifting screw (507) is movably connected to the lifting and adjusting plate (6) via a bearing; The push-injection piston pump (15) includes a piston cylinder (1501), the piston cylinder (1501) is vertically fixed on one side of the embossing liquid storage box (16), a sealing piston (1502) is provided in the piston cylinder (1501), a liquid extraction port (1503) is provided on one side of the lower end of the piston cylinder (1501), the liquid extraction port (1503) is connected to the embossing liquid storage box (16) through a pipeline, a liquid injection port (1504) is provided on one side of the liquid extraction port (1503), the liquid injection port (1504) is connected to the spray mechanism (17) through a pipeline, and a one-way valve is provided below the liquid extraction port (1503) and the liquid injection port (1504) of the spray mechanism, and the one-way valve at the liquid extraction port (1503) only allows the embossing liquid to flow into the piston cylinder (1501), and the one-way valve at the liquid injection port (1504) only allows the embossing liquid to flow out of the piston cylinder (1501); The spray mechanism (17) comprises a lower spray pipe (1701) and an upper spray pipe (1702), wherein the upper spray pipe (1702) and the lower spray pipe (1701) are respectively located on the upper and lower sides of the gap between the fixed embossing roller (401) and the movable embossing roller (402), and a plurality of atomizing nozzles (1703) are fixedly connected to the upper spray pipe (1702) and the lower spray pipe (1701), and a group of leather baffles (19) are respectively provided below the upper spray pipe (1702) and above the lower spray pipe (1701), and an embossing liquid collecting tank (20) is provided below the rolling mechanism (4).

2. The PVC artificial leather embossing machine according to claim 1, characterized in that: The worm (503), worm wheel (504), screw nut (505), fixed seat (506) and lifting screw (507) are each provided in two groups and are symmetrically arranged at both ends of the movable embossing roller (402).

3. The PVC artificial leather embossing machine according to claim 1, characterized in that: The spiral drive sleeve (7) includes a fixed sleeve (701), which is fixedly mounted on one side of the lifting and compressing plate (2) by means of bolts. An I-shaped sleeve (702) is nested in the fixed sleeve (701), and a spiral sleeve (703) is nested in the I-shaped sleeve (702). A first ratchet (704) is machined on the top of the fixed sleeve (701), and a second ratchet (705) is machined on the I-shaped sleeve (702). A circle of balls (706) is provided below the fixed sleeve (701), and a rolling track groove (707) is embedded in the I-shaped sleeve (702).

4. The PVC artificial leather embossing machine according to claim 3, characterized in that: The spiral rod (8) spirals upward in a clockwise direction, and the tooth tip of the second ratchet (705) faces in a clockwise direction.

5. The PVC artificial leather embossing machine according to claim 4, characterized in that: The internal through hole of the spiral sleeve (703) is consistent with the spiral rod (8) and both are spiral-shaped. The fixed sleeve (701) is slidably connected to the spiral rod (8), and the fixed sleeve (701) is fixedly connected to the fixed sleeve (701) by interference fit.

6. The PVC artificial leather embossing machine according to claim 5, characterized in that: The connecting rod transmission mechanism (14) includes an eccentric rod (1401), the eccentric rod (1401) is fixedly connected to the eccentric wheel (13) by means of a thread, and the eccentric rod (1401) is located near the edge of the eccentric wheel (13), the eccentric rod (1401) is movably connected to a push-pull connecting rod (1402) via a rotating shaft, and one end of the push-pull connecting rod (1402) is movably connected to a sealing piston (1502) via a rotating shaft.

7. The PVC artificial leather embossing machine according to claim 6, characterized in that: The spray adjustment mechanism (18) comprises an adjustment screw (1801), and a set of adjustment screws (1801) are respectively provided at both ends of the upper spray pipe (1702) and the lower spray pipe (1701), and an adjustment hand wheel (1802) is provided below the adjustment screw (1801). A threaded lifting block (1803) is connected to the adjustment screw (1801) via a thread, and the upper spray pipe (1702), the lower spray pipe (1701) and the leather baffle (19) are all fixedly mounted on the threaded lifting block (1803).

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