Power transmission devices and processing equipment

Abstract

The present invention discloses a power transmission device and processing equipment. The power transmission device includes: a base having a first mounting surface and a second mounting surface disposed opposite each other, the first mounting surface being located below the second mounting surface; a conveying mechanism mounted on the first mounting surface and having a conveying surface; and a pressing mechanism mounted on the second mounting surface, the conveying surface of the conveying mechanism facing the pressing mechanism so that the pressing mechanism flattens the material being conveyed on the conveying surface. It can be understood that the technical solution of the present invention can achieve stable conveyance of corrugated cardboard on the conveying surface.

Description

Technical Field

[0001] The present invention relates to the technical field of corrugated cardboard transmission, in particular to a power transmission device and processing equipment. Background Art

[0002] In order to realize the automatic processing of corrugated cardboard, a conveying surface is usually provided in the processing equipment. In this way, the corrugated cardboard is conveyed in the processing equipment through the conveying surface and automatically processed. Since the corrugated cardboard often warps, the contact area between the corrugated cardboard and the conveying surface is reduced, resulting in the corrugated cardboard not being able to stick closely to the conveying surface, thereby failing to ensure the stable transmission of the corrugated cardboard on the conveying surface, thereby affecting the subsequent processing of the corrugated cardboard.

[0003] The above content is only used to assist in understanding the technical solution of this application and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a power transmission device, which aims to achieve stable transmission of corrugated cardboard on a transmission surface.

[0005] To achieve the above-mentioned object, the power transmission device proposed in the present invention includes:

[0006] A base, the base having a first mounting surface and a second mounting surface arranged opposite to each other, the first mounting surface being located below the second mounting surface;

[0007] a conveying mechanism, the conveying mechanism being mounted on the first mounting surface, the conveying mechanism having a transmission surface;

[0008] A material pressing mechanism is installed on the second installation surface, and the transmission surface of the conveying mechanism faces the material pressing mechanism, so that the material pressing mechanism flattens the material transmitted on the transmission surface.

[0009] Optionally, the conveying mechanism includes a conveying platform and a lower pressing wheel, the conveying platform is mounted on the first mounting surface, the conveying platform has a conveying surface, the lower pressing wheel is rotatably connected to the conveying platform along a conveying direction of the conveying surface, and the lower pressing wheel partially protrudes from the conveying surface;

[0010] The pressing mechanism includes an upper pressing wheel, which is rotatably arranged on the second mounting surface along the transmission direction of the transmission surface;

[0011] The upper pressing wheel is arranged opposite to the lower pressing wheel and is used to flatten the material flowing over the lower pressing wheel.

[0012] Optionally, the pressing mechanism further includes a lifting assembly, which is in transmission connection with the upper pressing wheel to drive the upper pressing wheel to move closer to or away from the lower pressing wheel.

[0013] Optionally, the lifting assembly includes a driving module, a transmission gear and a connecting shaft. The driving module is connected to the transmission gear to drive the transmission gear to rotate. The transmission gear is sleeved on the connecting shaft, and the connecting shaft is eccentrically arranged on the transmission gear so that the connecting shaft approaches or moves away from the lower pressure wheel as the transmission gear rotates. The upper pressure wheel is sleeved on the connecting shaft and is coaxially arranged with the connecting shaft so that the upper pressure wheel approaches or moves away from the lower pressure wheel as the connecting shaft rotates.

[0014] Optionally, the driving module includes a driving motor, a transmission shaft and a driving gear. The output end of the driving motor is connected to one end of the transmission shaft to drive the transmission shaft to rotate. The driving gear is sleeved on the transmission shaft to rotate with the transmission shaft. The driving gear is engaged with the transmission gear to drive the transmission gear to rotate.

[0015] Optionally, the lifting assembly includes two transmission gears, which are spaced apart and sleeved on the connecting shaft, and the upper pressure wheel is located on the connecting shaft between the two transmission gears. The driving module includes two driving gears, which are spaced apart and sleeved on the transmission shaft, and the two driving gears are respectively engaged with the two transmission gears to drive the two transmission gears to rotate synchronously.

[0016] Optionally, the conveying mechanism includes a plurality of the transmission platforms and a plurality of the lower pressing wheels, the plurality of the transmission platforms are installed side by side on the first installation surface, and each of the transmission platforms is connected to a lower pressing wheel;

[0017] The pressing mechanism includes a plurality of upper pressing wheels, which are arranged side by side on the second mounting surface along the distribution direction of the plurality of lower pressing wheels, and each upper pressing wheel is arranged opposite to a lower pressing wheel;

[0018] The plurality of upper pressing wheels are sequentially sleeved on the connecting shaft between the two transmission gears, so that the connecting shaft drives each upper pressing wheel to approach or move away from the lower pressing wheel opposite thereto.

[0019] Optionally, the pressing mechanism further includes a mounting plate, the mounting plate being protruded from the second mounting surface, the side of the mounting plate facing the transmission surface being recessed with an avoidance notch, and the upper pressing wheel is partially accommodated in the avoidance notch.

[0020] Optionally, the upper pressure wheel is arranged to protrude from a plate surface of the mounting plate, and the side wall of the upper pressure wheel protruding from the plate surface of the mounting plate is provided with an annular groove along the circumference of the upper pressure wheel, and the plate surface of the mounting plate protruding from the upper pressure wheel is provided with an insertion strip, one end of the insertion strip is fixed to the mounting plate, and the other end is inserted into the annular groove.

[0021] The present invention also proposes a processing equipment, including a shell and a power transmission device, the power transmission device including: a base, the base having a first mounting surface and a second mounting surface arranged opposite to each other, the first mounting surface being located below the second mounting surface; a conveying mechanism, the conveying mechanism being installed on the first mounting surface, the conveying mechanism having a conveying surface; a pressing mechanism, the pressing mechanism being installed on the second mounting surface, the conveying surface of the conveying mechanism facing the pressing mechanism, so that the pressing mechanism flattens the material conveyed on the conveying surface; the power transmission device is arranged in the shell.

[0022] The technical solution of the present invention enables the corrugated cardboard to be conveyed on the conveying surface of the conveyor mechanism. The cardboard is pressed by the pressing mechanism, flattening the cardboard. This increases the contact area between the cardboard and the conveying surface, ensuring that the cardboard is conveyed in close contact with the conveying surface. In other words, the technical solution of the present invention enables stable conveyance of the cardboard on the conveying surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the processing equipment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the power transmission device;

[0026] Figure 3 for Figure 2 Installation diagram of the conveying mechanism, pressing mechanism and lifting assembly;

[0027] Figure 4 for Figure 3 Side view of the conveying mechanism, pressing mechanism and lifting assembly;

[0028] Figure 5 for Figure 3 Another perspective view of the conveying mechanism and the pressing mechanism.

[0029] Description of Figure Numbers:

[0030]

[0031] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0032] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] The present invention provides a power transmission device, aiming to achieve stable transmission of corrugated cardboard.

[0035] like Figures 1 to 5 As shown, in one embodiment of the present invention, a power transmission device 100 includes:

[0036] A base 10 having a first mounting surface 11 and a second mounting surface 12 opposite to each other, wherein the first mounting surface 11 is located below the second mounting surface 12;

[0037] A conveying mechanism 30 , wherein the conveying mechanism 30 is mounted on the first mounting surface 11 , and the conveying mechanism 30 has a transmission surface 311 ;

[0038] The pressing mechanism 50 is installed on the second installation surface 12 , and the transmission surface 311 of the conveying mechanism 30 faces the pressing mechanism 50 , so that the pressing mechanism 50 flattens the material being transmitted on the transmission surface 311 .

[0039] According to the technical solution of the present invention, when a warped corrugated cardboard 400 is placed on the conveying surface 311 of the conveying mechanism 30, the warped corrugated cardboard 400 is pressed by the pressing mechanism 50, thereby flattening the warped corrugated cardboard 400. This increases the contact area between the corrugated cardboard 400 and the conveying surface 311, ensuring that the corrugated cardboard 400 is conveyed in close contact with the conveying surface 311. In other words, the technical solution of the present invention can achieve stable conveyance of the corrugated cardboard 400.

[0040] It should be noted that the base 10 includes a first base body and a second base body arranged opposite to each other, with the first base body being arranged below the second base body. The first base body includes two first tubes, which are spaced apart in the horizontal direction, and the second base body includes two second tubes, which are spaced apart in the horizontal direction, and each first tube is arranged opposite to a second tube. The wall surfaces of the two first tubes facing the second base body form the first mounting surface 11, and the wall surfaces of the two second tubes facing the first base body form the second mounting surface 12. Of course, the first mounting surface 11 and the second mounting surface 12 may also be horizontal surfaces, but the embodiments of the present invention are not limited thereto, and all of the above are within the scope of protection of the embodiments of the present invention. The conveying mechanism 30 includes a fixed plate and a conveyor belt. The fixed plate is protruding from the first mounting surface 11 and extends in the direction in which the first mounting surface 11 and the second mounting surface 12 are arranged relative to each other. The conveyor belt is mounted on the plate surface of the fixed plate. The conveyor belt has a conveying surface 311. The conveying surface 311 of the conveyor belt faces the pressing mechanism 50, thereby allowing the pressing mechanism 50 to flatten the material on the conveying surface 311 of the conveyor belt. Of course, the conveyor belt can be a synchronous belt or a chain. All of the above conveying methods can achieve stable transmission of the corrugated cardboard 400.

[0041] like Figures 1 to 5As shown, in one embodiment of the present invention, the conveying mechanism 30 includes a conveying platform 31 and a lower pressing wheel 33. The conveying platform 31 is mounted on the first mounting surface 11. The conveying platform 31 has a conveying surface 311. The lower pressing wheel 33 is rotatably connected to the conveying platform 31 along the conveying direction of the conveying surface 311. The lower pressing wheel 33 partially protrudes from the conveying surface 311. The pressing mechanism 50 includes an upper pressing wheel 53. The upper pressing wheel 53 is rotatably arranged on the second mounting surface 12 along the conveying direction of the conveying surface 311. The upper pressing wheel 53 is arranged opposite to the lower pressing wheel 33 and is used to flatten the material flowing through the lower pressing wheel 33. Of course, the conveying platform 31 includes the fixed plate and the conveyor belt. The lower pressing wheel 33 is mounted on the surface of the fixed plate facing away from the conveyor belt. The fixed plate can be mounted on the fixed plate through a bearing 331, thereby realizing the rotatable connection of the lower pressing wheel 33 to the fixed plate. The embodiment of the present invention is provided with an upper pressing wheel 53 and a lower pressing wheel 33 which can respectively rotate along the conveying direction of the conveying surface 311. On the one hand, the upper pressing wheel 53 and the lower pressing wheel 33 form a counter-pressing effect on the corrugated cardboard 400, so that the corrugated cardboard 400 flowing through the lower pressing wheel 33 can be flattened, ensuring that the corrugated cardboard 400 is stably conveyed on the conveying surface 311; on the other hand, the upper pressing wheel 53 and the lower pressing wheel 33 can rotate along the conveying direction of the conveying surface 311, so that the corrugated cardboard 400 clamped between the upper pressing wheel 53 and the lower pressing wheel 33 can be conveyed out, ensuring that the corrugated cardboard 400 is smoothly conveyed on the conveying surface 311.

[0042] like Figures 1 to 5 As shown, in one embodiment of the present invention, the power transmission device 100 further includes a lifting assembly 70, which is in transmission connection with the upper pressing wheel 53 to drive the upper pressing wheel 53 to move closer to or away from the lower pressing wheel 33, and is used to adjust the distance between the upper pressing wheel 53 and the lower pressing wheel 33. Of course, the lifting assembly 70 can be a variety of structures that can achieve lifting. In the embodiment of the present invention, by arranging the upper pressing wheel 53 on the lifting assembly 70, the lifting assembly 70 drives the upper pressing wheel 53 to move closer to or away from the lower pressing wheel 33, and adjusts the distance between the lower pressing wheel 33 and the upper pressing wheel 53, thereby achieving the flattening of the corrugated cardboards 400 of different thicknesses during the transmission process of the corrugated cardboards 400 of different thicknesses, ensuring that the corrugated cardboards 400 of different thicknesses are close to the transmission surface 311, thereby ensuring the stable transmission of the corrugated cardboards 400 of different thicknesses.

[0043] like Figures 1 to 5As shown, in one embodiment of the present invention, the lifting assembly 70 includes a driving module 71, a transmission gear 73 and a connecting shaft 75. The driving module 71 is connected to the transmission gear 73 in a transmission manner to drive the transmission gear 73 to rotate. The transmission gear 73 is sleeved on the connecting shaft 75, and the connecting shaft 75 is eccentrically arranged on the transmission gear 73 so that the connecting shaft 75 approaches or moves away from the lower pressure wheel 33 as the transmission gear 73 rotates. The upper pressure wheel 53 is sleeved on the connecting shaft 75 and is coaxially arranged with the connecting shaft 75 so that the upper pressure wheel 53 approaches or moves away from the lower pressure wheel 33 as the connecting shaft 75 moves. In an embodiment of the present invention, the driving module 71 can be driven by a motor or a cylinder. The embodiment of the present invention is not limited thereto. The driving modes of the above two driving modules 71 are all within the protection scope of the embodiment of the present invention. The embodiment of the present invention is provided with a driving module 71, so that the driving module 71 drives the transmission gear 73. The transmission gear 73 can also be an eccentric wheel or a cam. The transmission gear 73 of the above two structures can both realize the transmission of the upper pressure wheel 53, as long as the connecting shaft 75 is eccentrically arranged on the transmission gear 73. In this way, when the transmission gear 73 rotates, the connecting shaft 75 is relatively close to or away from the lower pressure wheel 33 as the transmission gear 73 rotates, so that the upper pressure wheel is relatively close to or away from the lower pressure wheel 33. In the direction shown in the accompanying drawings, the upper pressure wheel 53 moves up and down. In this way, the distance between the upper pressure wheel 53 and the lower pressure wheel 33 is adjusted, so that the corrugated cardboard 400 of different thicknesses transmitted on the transmission surface 311 is flattened.

[0044] like Figures 1 to 5 As shown, in one embodiment of the present invention, the driving module 71 includes a driving motor, a transmission shaft 711 and a driving gear 713. The output end of the driving motor is connected to one end of the transmission shaft 711 to drive the transmission shaft 711 to rotate. The driving gear 713 is sleeved on the transmission shaft 711 to rotate with the transmission shaft 711. The driving gear 713 is engaged with the transmission gear 73 to drive the transmission gear 73 to rotate. In this embodiment of the present invention, the driving motor drives the transmission shaft 711 to rotate, and the driving gear 713 rotates with the transmission shaft 711, thereby realizing the rotation of the driving gear 713. The driving gear 713 is engaged with the transmission gear 73, thereby realizing the rotation of the transmission gear 73.

[0045] like Figures 1 to 5As shown, in one embodiment of the present invention, the lifting assembly 70 includes two transmission gears 73, two transmission gears 73 are spaced apart and sleeved on the connecting shaft 75, the upper pressure wheel 53 is located at the connecting shaft 75 between the two transmission gears 73, the driving module 71 includes two driving gears 713, two driving gears 713 are spaced apart and sleeved on the transmission shaft 711, and the two driving gears 713 are respectively engaged with the two transmission gears 73 to drive the two transmission gears 73 to rotate synchronously. In this way, the driving module 71 can drive the two transmission gears 73 to rotate, so that the connecting shaft 75 is driven by the transmission gears 73 at both ends, while improving the support effect on the connecting shaft 75, ensuring the stability of the connecting shaft 75 transmission. In addition, because the center lines of the two transmission gears 73 and the center lines of the connecting shaft 75 are not colinear, the connecting shaft 75 is caused to move relative to each other during the rotation process with the transmission gears 73, thereby realizing the approach or distance between the upper pressure wheel 53 and the lower pressure wheel 33. Of course, there are many ways to achieve that the center lines of the two transmission gears 73 are not colinear with the center line of the connecting shaft 75, as long as the rotation center of the connecting shaft 75 is inconsistent with the rotation center of the two transmission gears 73. The embodiments of the present invention are not limited to this, and the above different implementation methods are all within the protection scope of the embodiments of the present invention.

[0046] like Figures 1 to 5 As shown, in one embodiment of the present invention, the conveying mechanism 30 includes a plurality of transmission platforms 31 and a plurality of lower pressing rollers 33, wherein the plurality of transmission platforms 31 are installed side by side on the first mounting surface 11, and each transmission platform 31 is connected to a lower pressing roller 33; the pressing mechanism 50 includes a plurality of upper pressing rollers 53, which are arranged on the second mounting surface 12 along the distribution direction of the lower pressing rollers 33, and each upper pressing roller 53 is arranged opposite to a lower pressing roller 33; the plurality of upper pressing rollers 53 are sequentially sleeved on the connecting shaft 75 between the two transmission gears 73, so that the connecting shaft 75 drives each upper pressing roller 53 to move closer to or away from the lower pressing roller 33 opposite thereto. By providing a plurality of transmission platforms 31, the embodiment of the present invention realizes the simultaneous transmission of a plurality of corrugated cardboards 400, thereby improving the transmission efficiency of the corrugated cardboards 400. In addition, several upper pressing wheels 53 are sequentially sleeved on the connecting shaft 75, so that the connecting shaft 75 realizes the simultaneous transmission of several upper pressing wheels 53. In this way, the spacing between several upper pressing wheels 53 and several lower pressing wheels 33 is adjusted at the same time, thereby ensuring that corrugated cardboards 400 of different thicknesses are flattened at the same time, and realizing stable transmission of corrugated cardboards 400 of different thicknesses.

[0047] like Figures 1 to 5As shown, in one embodiment of the present invention, the pressing mechanism 50 further includes a mounting plate 51, which is protruding from the second mounting surface 12. A relief notch 51a is recessed on the side of the mounting plate 51 facing the transmission surface 311, and the upper pressing wheel 53 is partially accommodated in the relief notch 51a. The embodiment of the present invention ensures that the upper pressing wheel 53 rotates relative to the mounting plate 51 by providing the relief notch 51a, thereby preventing the mounting plate 51 from shaking during the rotation of the upper pressing wheel 53, thereby ensuring the stability of the overall structure.

[0048] like Figures 1 to 5 As shown, in one embodiment of the present invention, the upper pressing wheel 53 is arranged to protrude from a surface of the mounting plate 51. The side wall of the upper pressing wheel 53 protruding from the surface of the mounting plate 51 is provided with an annular groove 53a along the circumference of the upper pressing wheel 53. The surface of the mounting plate 51 on which the upper pressing wheel 53 is protruding is provided with an insert 511. One end of the insert 511 is fixed to the mounting plate 51, and the other end is inserted into the annular groove 53a. In this embodiment of the present invention, the upper pressing wheel 53 is movably mounted on the mounting plate 51 through the cooperation between the annular groove 53a and the insert 511. This ensures that the upper pressing wheel 53 can move relatively close to or away from the lower pressing wheel 33 while also moving left and right with the mounting plate 51, thereby facilitating the transportation and processing of corrugated cardboard of different widths.

[0049] like Figures 1 to 5 As shown, in one embodiment of the present invention, a processing device 1000 is provided, comprising a housing 200 and the aforementioned power transmission device 100, wherein the power transmission device 100 is disposed within the housing 200. A processing unit is provided within the housing 200, including a printing unit, a slotting unit, and a die-cutting unit. Thus, when a corrugated cardboard 400 is placed on the conveying surface 311 of the conveying mechanism 30, the warped corrugated cardboard 400 is pressed by the pressing mechanism 50, thereby flattening the warped corrugated cardboard 400. This increases the contact area between the corrugated cardboard 400 and the conveying surface 311, ensuring that the corrugated cardboard 400 is conveyed closely to the conveying surface 311. Thus, as the corrugated cardboard 400 is sequentially conveyed to the processing unit via the conveying surface 311, the processing unit can accurately process the corrugated cardboard on the conveying surface 311, ensuring the processing accuracy of the corrugated cardboard 400.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, within the scope of the present invention are included in the patent protection scope of the present invention.

Claims

1. A power transmission device, characterized in that: include: A base, the base having a first mounting surface and a second mounting surface arranged opposite to each other, the first mounting surface being located below the second mounting surface; a conveying mechanism, the conveying mechanism being mounted on the first mounting surface, the conveying mechanism having a transmission surface; a material pressing mechanism, the material pressing mechanism being mounted on the second mounting surface, the transmission surface of the conveying mechanism facing the material pressing mechanism, so that the material pressing mechanism flattens the material being transmitted on the transmission surface; The conveying mechanism includes a conveying platform and a lower pressing wheel, wherein the conveying platform is mounted on the first mounting surface, the conveying platform has a conveying surface, the lower pressing wheel is rotatably connected to the conveying platform along the conveying direction of the conveying surface, and the lower pressing wheel partially protrudes from the conveying surface; The pressing mechanism includes an upper pressing wheel, which is rotatably arranged on the second mounting surface along the transmission direction of the transmission surface; The upper pressing wheel is arranged opposite to the lower pressing wheel and is used to flatten the material flowing through the lower pressing wheel; The pressing mechanism further includes a mounting plate, the mounting plate being convexly arranged on the second mounting surface, the side of the mounting plate facing the transmission surface being concavely provided with an avoidance notch, the upper pressing wheel passing through the mounting plate, and the upper pressing wheel being partially accommodated in the avoidance notch; The upper pressing wheel is provided on a plate surface protruding from the mounting plate, and a side wall of the upper pressing wheel protruding from the plate surface of the mounting plate is provided with an annular groove along the circumference of the upper pressing wheel. The plate surface of the mounting plate protruding from the upper pressing wheel is provided with an inserting strip, one end of the inserting strip is fixed to the mounting plate, and the other end is inserted into the annular groove; two inserting strips are provided and located above the upper pressing wheel, and the two inserting strips are respectively located on both sides of the center line of the upper pressing wheel, and the extension directions of the two inserting strips are arranged at an angle; The pressing mechanism further includes a lifting assembly, which is in transmission connection with the upper pressing wheel to drive the upper pressing wheel to move closer to or away from the lower pressing wheel; The lifting assembly includes a driving module, a transmission gear and a connecting shaft. The driving module is connected to the transmission gear to drive the transmission gear to rotate. The transmission gear is sleeved on the connecting shaft, and the connecting shaft is eccentrically arranged on the transmission gear so that the connecting shaft approaches or moves away from the lower pressure wheel as the transmission gear rotates. The upper pressure wheel is sleeved on the connecting shaft and is coaxially arranged with the connecting shaft so that the upper pressure wheel approaches or moves away from the lower pressure wheel as the connecting shaft rotates.

2. The power transmission device according to claim 1, wherein: The driving module includes a driving motor, a transmission shaft and a driving gear. The output end of the driving motor is connected to one end of the transmission shaft to drive the transmission shaft to rotate. The driving gear is sleeved on the transmission shaft to rotate with the transmission shaft. The driving gear is engaged with the transmission gear to drive the transmission gear to rotate.

3. The power transmission device according to claim 2, wherein: The lifting assembly includes two transmission gears, which are spaced apart and sleeved on the connecting shaft. The upper pressure wheel is located on the connecting shaft between the two transmission gears. The driving module includes two driving gears, which are spaced apart and sleeved on the transmission shaft. The two driving gears are respectively engaged with the two transmission gears to drive the two transmission gears to rotate synchronously.

4. The power transmission device according to claim 3, wherein: The transmission mechanism includes a plurality of transmission platforms and a plurality of lower pressing wheels, wherein the plurality of transmission platforms are installed side by side on the first installation surface, and each transmission platform is connected to a lower pressing wheel; The pressing mechanism includes a plurality of upper pressing wheels, which are arranged side by side on the second mounting surface along the distribution direction of the plurality of lower pressing wheels, and each upper pressing wheel is arranged opposite to a lower pressing wheel; The plurality of upper pressing wheels are sequentially sleeved on the connecting shaft between the two transmission gears, so that the connecting shaft drives each of the upper pressing wheels to approach or move away from the lower pressing wheel opposite thereto.

5. A processing equipment, characterized in that, The utility model comprises a housing and the power transmission device according to any one of claims 1 to 4, wherein the power transmission device is arranged in the housing.

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