Rotary positioning and cutting parameter adjustable cotton mold unpacking test bed

Abstract

The invention belongs to the technical field of cotton processing machinery, and discloses a rotary positioning and cutting parameter adjustable cotton mold unpacking test bench which comprises a rack and a group of rotary positioning devices symmetrically arranged on the rack, each rotary positioning device comprises a clamping arm, and the clamping arms are hinged to the rack; a cylinder body of the hydraulic cylinder is hinged to the rack, and the free end of a piston rod of the hydraulic cylinder is hinged to the clamping arm; the two ends of the embossing roller are rotationally arranged on the clamping arms; the two ends of the rubber coating roller are rotationally arranged on the clamping arms; the chain transmission system is used for driving the embossing roller and the rubber coating roller to rotate synchronously; according to the scheme, sufficient friction force and adhesive force are provided through the embossing roller and the rubber coating roller, the embossing roller and the rubber coating roller are driven to rotate synchronously through the chain transmission system, it is ensured that the cotton mold is always kept stable in the rotating process, and therefore the cotton mold is positioned and cut; the mold opening device solves the problem that the cotton mold slides when the existing mold opening device drives the cotton mold to rotate.

Description

Technical Field

[0001] This solution belongs to the technical field of cotton processing machinery, and specifically relates to a cotton mold unpacking test bench with adjustable rotary positioning and cutting parameters. Background Art

[0002] Referring to the background art of the existing publication (announcement) number CN113148356B, with the progress of technology, mechanized operations have gradually replaced manual operations. For cotton harvesting, cotton pickers are currently commonly used to replace manual picking. The mainstream cotton pickers are equipped with a packaging mechanism in their cotton boxes, which is used to package the cotton picked by the cotton picker in a set packaging form to form a package with a generally cylindrical surface covered with plastic film or other materials for easy transportation and storage. This kind of package formed by compressing cotton under pressure into a certain shape is called a cotton mold in the industry. The packaging material on the surface of the cotton mold is a packaging film, and the packaging film is usually a plastic film.

[0003] Before cotton processing, it is first necessary to remove the packaging film on the surface of the cotton mold. The general shape of the cotton mold is cylindrical, with a standard diameter of 2.3 meters, a length of 2.4 meters, and a weight of about 2.3 tons. Through research, it is found that all cotton processing plants in China currently use manual methods to remove the packaging film on the cotton mold; the general operation method is to place the cotton mold in a relatively open space and stand it upright with a loader. First, manually cut open the packaging film of each cotton mold, then extract the packaging film, and then use the loader to push the cotton apart; another processing method is to first lift the cotton mold with a loader, then manually cut open the packaging film, remove the packaging film and place it aside, and then put down the cotton mold and push it apart. Since the cotton mold is large and heavy, a loader with a loading capacity of more than 3 tons is usually required. If the lifted cotton mold is not fixed firmly, it is very easy to fall off the bucket of the loader, which is likely to cause injury accidents. And the height lifted by the loader is relatively high, making it relatively difficult for workers to cut the film.

[0004] Referring to the document with the existing publication (announcement) number CN115214951A, a cotton round mold handling and opening device is disclosed, which includes fixed arms and movable arms symmetrically arranged at intervals before and after. The upper ends of the fixed arms and the movable arms are connected by a hinge shaft and drive the movable arms to rotate under the action of a hydraulic drive device; a fixed arm frame, a cutting device, and a rotatably arranged roller are provided between the fixed arms. The fixed arm frame is fixedly arranged between the front and rear fixed arms and is provided with a loader connecting plate for connecting the loader. The cutting device includes a support frame fixed on the fixed arm, a chain conveyor arranged on the support frame, and a cutting knife installed on the chain conveyor. The cutting knife moves back and forth under the drive of the chain conveyor.

[0005] For example, in the above-mentioned mold opening device, the circular mold can be grasped and transported through the fixed arm and the movable arm, and the rotation of the circular mold and the automatic code scanning and cutting position recognition are achieved through the cooperation of the supporting roller, the studded roller and the code scanning device. However, this device only relies on the rotation of the supporting roller to drive the cotton mold to rotate. Since the cotton mold itself has large flexibility and a large weight (about 2.3 tons), and the contact area of the supporting roller is limited, it is impossible to provide enough friction force to stably drive the cotton mold to rotate. During the rotation process, the cotton mold will slide, making it difficult to achieve accurate cutting position positioning, resulting in the problem of packaging film cutting residue. Summary of the Invention

[0006] The purpose of this solution is to provide a cotton mold unpacking test bench with adjustable rotary positioning and cutting parameters to solve the problem of cotton mold sliding when the existing mold opening device drives the cotton mold to rotate.

[0007] To achieve the above purpose, this solution provides a cotton mold unpacking test bench with adjustable rotary positioning and cutting parameters, including a frame and a set of rotary positioning devices symmetrically arranged on the frame. The rotary positioning device includes:

[0008] A clamping arm, which is hinged to the frame.

[0009] A hydraulic cylinder, the cylinder body of which is hinged to the frame, and the free end of the piston rod of the hydraulic cylinder is hinged to the clamping arm.

[0010] A embossing roller, the two ends of which are rotatably arranged on the clamping arm.

[0011] A rubber-coated roller, the two ends of which are rotatably arranged on the clamping arm.

[0012] A chain drive system, which is used to drive the embossing roller and the rubber-coated roller to rotate synchronously.

[0013] The principle and effect of this solution are as follows: The embossing roller and the rubber-coated roller provide sufficient friction force and adhesion, and the chain drive system drives the embossing roller and the rubber-coated roller to rotate synchronously, ensuring that the cotton mold always remains stable during the rotation process, so as to position and cut the cotton mold.

[0014] Further, a clamping arm lifting lug for connecting the clamping arm is provided at the top of the frame, and one end of the clamping arm is hinged to the clamping arm lifting lug.

[0015] The principle and effect of this solution are as follows: It enables the clamping arm to be connected to the frame.

[0016] Further, the embossing roller and the rubber-coated roller are arranged in parallel; a color mark sensor is provided on the clamping arm.

[0017] The principle and effect of this solution are: the parallel arrangement provides uniform friction and adhesion; the color mark sensor is used to detect the color mark on the cotton mold packaging film, thereby locating the cutting position.

[0018] Furthermore, the chain transmission system includes a stepper motor and a first sprocket, the stepper motor is fixed on the clamping arm, the first sprocket is fixedly connected to the output shaft of the stepper motor, the first sprocket is connected to the second sprocket through a first chain transmission, the second sprocket is coaxially fixedly connected to the rotating shaft of the rubber-coated roller, the second sprocket is connected to the third sprocket through a second chain transmission, and the third sprocket is coaxially fixedly connected to the rotating shaft of the embossing roller.

[0019] The principle and effect of this solution are: the first sprocket is driven to rotate by a stepper motor, thereby driving the second sprocket and the third sprocket to rotate through the first chain and the second chain in turn, and then driving the rubber drum and the embossing drum to rotate synchronously.

[0020] Furthermore, it also includes a sliding cutting device arranged below the rotary positioning device, the sliding cutting device includes a sliding cutting system and a synchronous belt power system, the sliding cutting system includes a first servo motor and a circular knife, the output shaft of the first servo motor is fixedly connected to the circular knife; the synchronous belt power system includes a second servo motor, a synchronous belt and a driven wheel, the output shaft of the second servo motor is fixedly connected to a synchronous pulley, the synchronous belt is transmission-connected to the driven wheel and the synchronous pulley, and the synchronous belt is used to drive the first servo motor to move.

[0021] The principle and effect of this solution are as follows: the first servo motor drives the circular knife to rotate, providing cutting power. The second servo motor in the synchronous belt power system drives the entire sliding cutting system along the cutting direction through the transmission of the synchronous belt and the driven pulley, thereby cutting the cotton mold packaging film.

[0022] Furthermore, it also includes a lifting platform arranged under the frame, the lifting platform is arranged in the frame, the lifting platform includes a platform and a lifting platform frame, and the sliding cutting device is arranged on the platform; the lifting platform frame is provided with a turbine screw lift, and the platform is arranged on the screw of the turbine screw lift.

[0023] The principle and effect of this solution are: when the cutting depth needs to be adjusted, the turbine screw lift drives the screw to move linearly, so that the platform moves up and down, thereby controlling the distance between the sliding cutting device and the cotton mold, and then controlling the cutting depth.

[0024] Furthermore, a slide is provided on the platform for sliding, the first servo motor is fixed on the slide, and a fixed block for clamping the synchronous belt is provided on the slide; the driven wheel and the second servo motor are both provided on the slide.

[0025] The principle and effect of this solution are as follows: The first servo motor is driven by the sliding table to cut the cotton mold packaging film along the length direction of the cotton mold packaging film.

[0026] Furthermore, a guide rail is provided on the platform, and the sliding table is slidably connected to the guide rail.

[0027] The principle and effect of this solution are as follows: The guide rail is used to provide positioning and guiding functions for the movement of the sliding table.

[0028] Furthermore, an induction sheet is provided on the fixed block, and a limit sensor and a collision prevention block are provided on the platform.

[0029] The principle and effect of this solution are as follows: The induction sheet is used to detect whether the fixed block clamps the synchronous belt; the limit sensor and the collision prevention block are used to provide buffering when the sliding cutting device accidentally collides.

[0030] Furthermore, a dynamic torque sensor is provided on the sliding table, and the dynamic torque sensor is used to measure the cutting torque of the cotton mold packaging film. The cutting force F calculation formula is:

[0031]

[0032] In the formula: T is the cutting torque output by the dynamic torque sensor, ω is the rotational speed of the circular knife, and υ is the feed speed of the circular knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 is a schematic diagram of the frame structure of the present invention;

[0035] Figure 3 is a schematic diagram of the rotary positioning device structure of the present invention;

[0036] Figure 4 is a schematic diagram of the lifting table structure of the present invention;

[0037] Figure 5 is a schematic diagram of the sliding cutting device structure of the present invention;

[0038] Figure 6 is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0039] Figure 7 is Figure 6 the enlarged schematic at A in Figure 1 ;

[0040] Figure 8 is Figure 6 the enlarged schematic at A in Figure 2 ;

[0041] Figure 9 Schematic diagram of the internal structure of the support disk.

[0042] Names of the reference numerals in the specification: 1 - frame, 2 - rotary positioning device, 3 - lifting table, 4 - sliding cutting device, 5 - control system, 6 - cotton mold, 11 - column, 12 - crossbeam, 13 - hydraulic cylinder lug, 14 - clamp arm lug, 15 - cutting support plate, 21 - color mark sensor, 22 - chain drive system, 23 - embossing roller, 24 - rubber-covered roller, 25 - clamp arm, 26 - hydraulic cylinder, 31 - platform, 32 - turbo screw jack, 33 - lifting table frame, 34 - hand crank, 35 - lifting table transmission shaft, 36 - lifting table coupling, 37 - gear transmission box, 41 - sliding cutting system, 42 - synchronous belt power system, 2201 - second sprocket, 2202 - third sprocket, 2203 - chain drive bearing seat, 2204 - stepping motor base, 2205 - stepping motor, 4101 - circular knife, 4102 - chuck, 4103 - cutting table transmission shaft, 4104 - cutting table bearing seat, 4105 - cutting table coupling, 4106 - dynamic torque sensor, 4107 - guide rail, 4108 - slider, 4109 - slide table, 4110 - cutting table first servo motor base, 4111 - first servo motor, 4112 - dynamic torque sensor base, 4113 - bearing seat base, 4201 - synchronous belt, 4202 - synchronous belt pulley, 4203 - synchronous belt pulley base, 4204 - coupling, 4205 - second servo motor, 4206 - synchronous belt first servo motor base, 4207 - induction plate, 4208 - fixed block, 4209 - limit sensor, 4210 - anti-collision block;

[0043] Support assembly 7, nozzle 71, pressing plate 72, touch switch 73, spring 74, first magnet 75, support disk 76, tension spring 77, second magnet 78. Detailed implementation manners

[0044] The following will clearly and completely describe the concept and the resulting technical effects of the present invention in combination with the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention:

[0045] Embodiment 1:

[0046] Please refer to Figures 1 - 5, A cotton mold unpacking test bench with adjustable rotary positioning and cutting parameters, including a frame 1. The frame 1 consists of a frame 1 assembled by several columns 11 and crossbeams 12, and there are a hydraulic cylinder hanger 13 and a clamp arm hanger 14 on the frame 1. There is a set of symmetrically arranged rotary positioning devices 2 on the frame 1. The rotary positioning device 2 includes a clamp arm 25, a hydraulic cylinder 26, an embossing roller 23, a rubber-coated roller 24, and a chain drive system 22. One end of the clamp arm 25 is hinged to the clamp arm hanger 14, the cylinder body of the hydraulic cylinder 26 is hinged to the frame 1 through the hydraulic cylinder hanger 13, the free end of the piston rod of the hydraulic cylinder 26 is hinged to the clamp arm 25, both ends of the embossing roller 23 are rotatably arranged on the clamp arm 25, the outer wall of the embossing roller 23 is provided with anti-slip patterns, both ends of the rubber-coated roller 24 are rotatably arranged on the clamp arm 25, the embossing roller 23 and the rubber-coated roller 24 are arranged in parallel, and there is a color mark sensor 21 on the clamp arm 25 for detecting the color mark on the packaging film of the cotton mold 6. The chain drive system 22 includes a stepping motor 2205 and a first sprocket. The stepping motor 2205 is fixedly arranged on the clamp arm 25, and there is a stepping motor base 2204 on the stepping motor 2205. The first sprocket is fixedly connected to the output shaft of the stepping motor 2205. The first sprocket is connected to a second sprocket 2201 through a first chain. The second sprocket 2201 is coaxially and fixedly connected to the rotating shaft of the rubber-coated roller 24. The second sprocket 2201 is connected to a third sprocket 2202 through a second chain. The third sprocket 2202 is coaxially and fixedly connected to the rotating shaft of the embossing roller 23. Chain drive bearing seats 2203 are provided on both the second sprocket 2201 and the third sprocket 2202.

[0047] Specific working principle: The embossing roller 23 and the rubber-coated roller 24 provide sufficient friction and adhesion. The first sprocket is driven to rotate by the stepping motor 2205, and then the second sprocket 2201 and the third sprocket 2202 are driven to rotate in sequence through the first chain and the second chain, thereby driving the rubber-coated roller 23 and the embossing roller 24 to rotate synchronously, ensuring that the cotton mold 6 always remains stable during the rotation process, and the color mark on the packaging film of the cotton mold 6 is detected by the color mark sensor 21, so as to position the cutting position.

[0048] It further includes a sliding cutting device 4 disposed below the rotary positioning device 2. The sliding cutting device 4 includes a sliding cutting system 41 and a synchronous belt power system 42. The sliding cutting system 41 includes a first servo motor 4111 and a circular knife 4101. The cutting table transmission shaft 4103 is fixedly connected to the circular knife 4101 through a cutting table coupling 4105. The circular knife 4101 is fixedly connected with a chuck 4102. Below the circular knife 4101, there are a bearing block base 4113 and a cutting table bearing block 4104. On the frame 1, there is a cutting support plate 15. The cotton mold 6 is placed on the cutting support plate 15. The cutting support plate 15 is provided with a groove. The circular knife 4101 passes through the cutting support plate 15 through the groove. At the bottom of the first servo motor 4111, there is a cutting table first servo motor base 4110. At the bottom of the cutting table bearing block 4104, there is a sliding table 4109. On the platform 31, there is a guide rail 4107. At the bottom of the sliding table 4109, there is a slider 4108. The slider 4108 is slidably connected with the guide rail 4107. On the sliding table 4109, there is a fixing block 4208 for clamping the synchronous belt 4201. The driven wheel and the second servo motor 4205 are both disposed on the sliding table 4109. On the sliding table 4109, there is a dynamic torque sensor base 4112, on which there is a dynamic torque sensor 4106. The dynamic torque sensor 4106 is used to measure the cutting torque of the packaging film of the cotton mold 6. The calculation formula of the cutting force F is:

[0049]

[0050] In the formula: T is the cutting torque output by the dynamic torque sensor 4106, ω is the rotational speed of the circular knife 4101, and υ is the feed speed of the circular knife 4101.

[0051] On the sliding table 4109, there is a fixing block 4208 for clamping the synchronous belt 4201, and on the fixing block 4208, there is an induction piece 4207; the driven wheel and the second servo motor 4205 are both disposed on the sliding table 4109. On the platform 31, there are a limit sensor 4209 and a collision prevention block 4210. The synchronous belt power system 42 includes a second servo motor 4205, a synchronous belt 4201, and a driven wheel. Below the second servo motor 4205, there is a synchronous belt first servo motor base 4206. The output shaft of the second servo motor 4205 is fixedly connected with a synchronous belt pulley 4202 through a coupling 4204. Below the synchronous belt pulley 4202, there is a synchronous belt pulley base 4203. The synchronous belt 4201 is in transmission connection with the driven wheel and the synchronous belt pulley 4202. The synchronous belt 4201 is used to drive the first servo motor 4111 to move. It further includes a control system 5. The rotary positioning device 2 and the sliding cutting device 4 are both electrically connected to the control system 5.

[0052] It further includes a lifting table 3 disposed below the frame 1. The lifting table 3 is disposed within the frame 1. The lifting table 3 includes a platform 31 and a lifting table frame 33. The sliding cutting device 4 is disposed on the platform 31. A turbo screw jack 32 is provided on the lifting table frame 33. The platform 31 is disposed on the screw rod of the turbo screw jack 32. The turbo screw jack 32 includes a hand crank 34, a lifting table transmission shaft 35, a lifting table coupling 36, and a gear transmission box 37. Their connection relationships are all prior arts known to those skilled in the art.

[0053] Specific working principle: The circular knife 4101 is driven to rotate by the first servo motor 4111 to provide cutting power. The second servo motor 4205 drives the first servo motor 4111 and the circular knife 4101 to move along the cutting direction through the transmission of the synchronous belt 4201 and the driven wheel, so as to cut the packaging film of the cotton mold 6. Before cutting, when the cutting depth needs to be adjusted, the turbo screw jack 32 drives the screw rod to perform a linear motion, so that the platform 31 moves up and down, thereby controlling the distance between the circular knife 4101 and the cotton mold 6, and further controlling the cutting depth.

[0054] Embodiment 2:

[0055] The differences between this embodiment and the previous embodiment are as follows:

[0056] When cutting the cotton mold 6, since the cotton mold 6 is filled with cotton, at the cut, the cotton is likely to fall off. And since the circular knife 4101 needs to move along the cutting direction, the feeding speed of the circular knife 4101 is relatively slow, resulting in the cotton at the position just cut by the circular knife 4101 being likely to fall onto the circular knife 4101 and thus being cut by the circular knife 4101, which is likely to cause the cotton to get stuck on components such as the bearings connected to the circular knife 4101. More importantly, after the cotton is cut, the cotton seeds therein are likely to fall onto the cutting table, affecting the cleaning and the subsequent placement of the cotton mold on the table. Secondly, since the cotton mold 6 is made of flexible foam material, the pressure on the contact surface between the cotton mold 6 and the cotton is uneven, that is, the contact surface is concave and convex, which means that the inner wall of the cotton mold 6 is uneven. This results in that during cutting, some positions are not cut through, and there will be residual cotton molds that are not completely cut (residual cotton molds at the cut). Moreover, since cotton and the cotton mold are flammable, after the circular knife 4101 cuts multiple cotton molds, the temperature of the cutting edge of the cutting knife 4101 will rise. If it cuts the cotton mold 6, it is likely to cause the two to burn when contacting the cotton mold 6 or the cotton. Therefore, this embodiment makes further improvements to the above problems.

[0057] Please refer to Figure 6, a supporting component 7 is provided at the rear end of the circular knife 4101. The supporting component 7 includes a bracket (not shown in the figure). The bracket is arranged on the sliding table 4109. A nozzle 71, a pressing plate 72 and a touch switch 73 are provided on the bracket. The nozzle 71 is connected to a high-pressure gas source through a pipeline. The gas source is preferably high-pressure cold air. The nozzle 71 is arranged at the rear end of the circular knife 4101, and the nozzle orifice of the nozzle 81 is inclined towards the circular knife 4101, and the inclined angle is set to 30°, so that the gas ejected from the nozzle 71 is inclined towards the cutting position of the cotton mold 6. The ejection direction and angle of the gas can be referred to Figure 7 and Figure 8 . The pressing plate 72 is arranged at the rear end of the nozzle 71 and is located on the left side of the highest point of the circular knife 4101. Its setting position can be referred to Figure 7 and Figure 8 . The pressing plate 72 is connected with a spring 74. The free end of the spring 74 is fixedly connected to the bracket. The touch switch 73 is arranged below the pressing plate 72. The pressing plate 72 is used to abut against the touch switch 73. The touch switch 73 is electrically connected to the control system 5.

[0058] Please refer to Figure 9 . The nozzle 71 is hinged to the bracket, and a torsion spring (not shown in the figure) for resetting the nozzle 71 is provided at the hinge point. The position of the nozzle 71 in the natural state is a horizontal state, and the ejected gas faces the blade of the circular knife 4101. A first magnet 75 is provided on the nozzle 71. A support disk 76 (the support disk 76 does not rotate with the circular knife 4101) is coaxially penetrated through the circular knife 4101. The support disk 76 is a support disk 76 with a hollow structure. A tension spring 77 is provided on the rotating shaft of the circular knife 4101 connected to the coupling. The free end of the tension spring 77 is connected with a second magnet 78. The second magnet 78 has the same magnetism as the first magnet 75, and the two repel each other.

[0059] Specific working principle: When cutting, a high-pressure cold source is introduced into the nozzle 71, and then the rotation speed of the circular knife 4101 is controlled to 1500 r / min. The circular knife 4101 rotates at a relatively high speed. The second magnet 78 is subjected to a large centrifugal force, stretches the tension spring 77, and thus moves away from the center of rotation, so that the second magnet 78 is thrown to the limit position, making it close to the first magnet 75. Since the two repel each other, the second magnet 78 pushes the first magnet 75 to rotate, so that the nozzle 71 rotates to 30°, making it inclined towards the cutting position of the cotton mold 6. When the circular knife 4101 cuts the cotton mold 6, the cut position is blown with a high-pressure cold air source, so as to have a supporting effect on the cotton at the cut position and prevent the cotton at this position from falling (see Figure 7 ). If the circular knife 4101 does not cut through this position (see Figure 8) When the high-pressure cold air source blows towards this position, due to the obstruction of the uncut cotton mold 6, the air source will not enter the cotton. As a result, the direction of the air source is deflected by the cotton mold 6 towards the pressing plate 72. The pressing plate 72 moves downward under the pressure of the air source, compressing the spring 74 and touching the touch switch 73, thereby closing the contacts of the touch switch 73 and transmitting a signal to the control system 5 to trigger a prompt alarm, indicating that the cotton mold 6 at this location is not cut through. The worker can control the circular knife 4101 to rotate back to perform secondary cutting at this location through the control system 5. After cutting a single cotton mold 6 is completed, the rotation speed of the circular knife 4101 is controlled to 20 r / min, making its rotation speed relatively slow. The second magnet 78 is subjected to a smaller centrifugal force and moves away from the first magnet 75. After the first magnet 75 loses the repulsive force of the second magnet 78, it is reset to its initial position under the drive of the torsion spring, that is, the nozzle 71 is horizontal, so that the cold source ejected by the nozzle 71 faces the circular knife 4101, and the circular knife 4101 is also rotating circumferentially, thereby cooling it evenly.

[0060] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A cotton mold unpacking test bench with adjustable rotary positioning and cutting parameters, comprising a frame (1) and a group of rotary positioning devices (2) symmetrically arranged on the frame (1), characterized in that, The rotary positioning device (2) includes: a clamping arm (25) hinged to the frame (1); a hydraulic cylinder (26) with its cylinder body hinged to the frame (1) and the free end of its piston rod hinged to the clamping arm (25); a embossing roller (23) rotatably arranged at both ends on the clamping arm (25); a rubber-coated roller (24) rotatably arranged at both ends on the clamping arm (25); a chain drive system (22) for driving the embossing roller (23) and the rubber-coated roller (24) to rotate synchronously.

2. The cotton bale opening test bench with rotary positioning and adjustable cutting parameters according to claim 1, characterized in that: At the top of the frame (1), there is a clamping arm lug (14) for connecting the clamping arm (25), and one end of the clamping arm (25) is hinged to the clamping arm lug (14).

3. The cotton mold unpacking test bench with rotary positioning and adjustable cutting parameters according to claim 1, wherein: The embossing roller (23) and the rubber-coated roller (24) are arranged in parallel; a color mark sensor (21) is provided on the clamping arm (25).

4. A cotton mold unpacking test bench with adjustable rotary positioning and cutting parameters according to claim 1, characterized in that: The chain drive system (22) includes a stepping motor (2205) and a first sprocket. The stepping motor (2205) is fixedly arranged on the clamping arm (25), and the first sprocket is fixedly connected to the output shaft of the stepping motor (2205). The first sprocket is drivingly connected to a second sprocket (2201) through a first chain. The second sprocket (2201) is coaxially and fixedly connected to the rotating shaft of the rubber-coated roller (24). The second sprocket (2201) is drivingly connected to a third sprocket (2202) through a second chain. The third sprocket (2202) is coaxially and fixedly connected to the rotating shaft of the embossing roller (23).

5. A cotton mold unpacking test bench with rotatable positioning and adjustable cutting parameters according to claim 1, characterized in that: It further includes a sliding cutting device (4) arranged below the rotary positioning device (2). The sliding cutting device (4) includes a sliding cutting system (41) and a synchronous belt power system (42). The sliding cutting system (41) includes a first servo motor (4111) and a circular knife (4101), and the output shaft of the first servo motor (4111) is fixedly connected to the circular knife (4101). The synchronous belt power system (42) includes a second servo motor (4205), a synchronous belt (4201) and a driven wheel. The output shaft of the second servo motor (4205) is fixedly connected to a synchronous belt pulley (4202). The synchronous belt (4201) is drivingly connected to the driven wheel and the synchronous belt pulley (4202), and the synchronous belt (4201) is used to drive the first servo motor (4111) to move.

6. The cotton bale opening test bench with rotary positioning and adjustable cutting parameters according to claim 5, characterized in that: It further includes a lifting table (3) arranged below the frame (1). The lifting table (3) is arranged inside the frame (e1). The lifting table (3) includes a platform (31) and a lifting table frame (33). The sliding cutting device (4) is arranged on the platform (31). A turbo screw jack (32) is provided on the lifting table frame (33), and the platform (31) is arranged on the screw rod of the turbo screw jack (32).

7. A cotton mold unpacking test bench with rotatable positioning and adjustable cutting parameters according to claim 6, characterized in that: A slide table (4109) is slidably provided on the platform (31). The first servo motor (4111) is fixedly provided on the slide table (4109). A fixing block (4208) for clamping the synchronous belt (4201) is provided on the slide table (4109). The driven wheel and the second servo motor (4205) are both provided on the slide table (4109).

8. A cotton mold unpacking test bench with rotatable positioning and adjustable cutting parameters according to claim 7, characterized in that: A guide rail (4107) is provided on the platform (31). The slide table (4109) is slidably connected to the guide rail (4107).

9. A cotton mold unpacking test bench with rotatable positioning and adjustable cutting parameters according to claim 7, characterized in that: An induction sheet (4207) is provided on the fixing block (4208). A limit sensor (4209) and a collision prevention block (4210) are provided on the platform (31).

10. A cotton bale opening test bench with rotatable positioning and adjustable cutting parameters according to claim 7, characterized in that: A dynamic torque sensor (4106) is provided on the slide table (4109). The dynamic torque sensor (4106) is used to measure the cutting torque of the packaging film of the cotton mold (6). The calculation formula for the cutting force F is: In the formula: T is the cutting torque output by the dynamic torque sensor (4106), ω is the rotational speed of the circular knife (4101), and υ is the feed speed of the circular knife (4101).

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