Strip material punching mechanism

Abstract

The application discloses a strip material punching mechanism, which comprises a workbench arranged horizontally, a punching device and a material pulling device arranged on the top surface of the workbench respectively, the punching device comprises a lower die and an upper die arranged directly above the lower die, the top end of the upper die is connected to a punching cylinder, the material pulling device comprises a clamping device slidingly arranged on the workbench and a material pulling cylinder connected to the clamping device, a connecting plate is connected to the side of the clamping device close to the material pulling cylinder, the number of the material pulling cylinders is two, and each of the material pulling cylinders is connected to the connecting plate through a sliding seat, and the sliding seats are slidingly arranged on the two sides of the strip material through guide rails. The strip material punching mechanism has a simple structure and is used for automatic feeding and punching of strip materials.

Description

Technical Field

[0001] This application relates to the field of automated feeding technology, and in particular to a strip material punching mechanism. Background Technology

[0002] Punching is a common process in manufacturing, mainly used to remove excess material from raw materials or semi-finished products to achieve specific shapes, sizes, or design requirements. Punching is often used to cut and separate products from a strip of material. Currently, most commonly used punching equipment uses a motor to drive the take-up coil for feeding. To ensure feeding accuracy, multiple tensioning devices are required before and after the punching device, resulting in a complex structure. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a strip material punching mechanism to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: This utility model discloses a strip material punching mechanism, including a horizontally arranged worktable and a punching device and a pulling device respectively disposed on the top surface of the worktable. The punching device includes a lower die and an upper die disposed directly above the lower die. The top end of the upper die is connected to a punching cylinder. The pulling device includes a clamping device slidably disposed on the worktable and a pulling cylinder connected to the clamping device. A connecting plate is connected to the side of the clamping device near the pulling cylinder. There are two pulling cylinders, each connected to the connecting plate via a sliding seat. The sliding seats are slidably disposed on both sides of the strip material via guide rails. The clamping device includes a base connected to the connecting plate. A material groove for accommodating the strip material is disposed inside the base. A clamping cylinder is disposed at the top end of the base via a cylinder seat. The piston rod of the clamping cylinder is connected to a clamping plate corresponding to the material groove.

[0005] Furthermore, in the above-mentioned strip material punching mechanism, the lower die includes a lower die base installed on the top surface of the workbench and a lower template slidably disposed on the lower die base. The top of the lower die base is provided with a material channel for accommodating the sliding of the strip material. The lower template is disposed perpendicular to the material channel. The top surface of the lower template is flush with the top surface of the material channel and is provided with punching holes.

[0006] Furthermore, in the above-mentioned strip material punching mechanism, a pushing cylinder is connected to one end of the lower template, and a material ejector is provided on the other side. The material ejector includes a mounting frame installed on the workbench and a material ejector cylinder provided at the bottom of the mounting frame. The push plate of the material ejector cylinder is connected to a push rod, and the push rod slides through the mounting frame. A material ejector hole corresponding to the push rod is provided in the punching hole.

[0007] Furthermore, in the above-mentioned strip material punching mechanism, the upper die includes an upper die frame mounted on the worktable, an upper die base slidably connected to the upper die frame, and a punch mounted on the upper die base. The punching cylinder is fixed to the top of the upper die frame, and its piston rod is connected to the upper die base. The punching cylinder, punch, and punching hole are coaxially arranged.

[0008] Furthermore, in the above-mentioned strip material punching mechanism, the upper die frame includes a top plate disposed directly above the lower die base and a support column supported between the top plate and the worktable. The upper die base includes a lifting plate slidably connected to the support column, a connecting block fixed to the top of the lifting plate, and a pressure plate slidably connected to the bottom of the lifting plate. The punching cylinder is fixed to the top of the top plate, and the piston rod is connected to the connecting block.

[0009] Furthermore, in the above-mentioned strip material punching mechanism, the pressure plate is slidably connected to the lifting plate via a guide rod, and a first spring sleeved on the guide rod is provided between the pressure plate and the lifting plate. The bottom end of the pressure plate has a pressure boss corresponding to the material channel.

[0010] Furthermore, in the above-mentioned strip material punching mechanism, the punch includes an outer punch mounted on the lifting plate and an inner punch slidably disposed on the outer punch. The bottom end of the outer punch slidably penetrates the pressure plate. The inner punch includes a punching section, a connecting section, and a limiting section arranged sequentially. The punching section, connecting section, and limiting section are coaxially arranged, and their radii increase sequentially. The punching section slidably penetrates the outer punch. A second spring is provided between the limiting section and the outer punch and sleeved on the connecting section. An avoidance hole corresponding to the inner punch is provided in the connecting block. The length of the punching section is greater than the sum of the length of the outer punch and the thickness of the strip material.

[0011] Furthermore, in the above-mentioned strip material punching mechanism, the center of the punching hole is provided with a discharge hole corresponding to the inner punch, the lower die base and the worktable are respectively provided with discharge channels corresponding to the discharge hole, and a waste collection frame is provided below the worktable.

[0012] Furthermore, in the above-mentioned strip material punching mechanism, a positioning device is provided between the punching device and the pulling device.

[0013] Furthermore, the strip material punching mechanism described above also includes a feeding roll and a take-up roll. The strip material is fed out by the feeding roll and passes through the punching device, positioning device and pulling device in sequence before entering the take-up roll. The take-up roll is connected to a take-up motor.

[0014] Compared with the prior art, the strip material punching mechanism of this utility model has a simple structure and is used for automated feeding of strip materials. The strip material is pulled by a pulling cylinder and a clamping device, eliminating the need for too many tensioning devices and avoiding the accumulation of errors caused by motor conveying. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 The diagram shown is a schematic diagram of the strip material punching mechanism in a specific embodiment of this utility model.

[0016] Figure 2 The diagram shown is a structural schematic of the punching device and the material pulling device in a specific embodiment of this utility model.

[0017] Figure 3 The diagram shown is a cross-sectional view of the punching device and the material pulling device in a specific embodiment of this utility model.

[0018] Figure 4 The diagram shown is a structural schematic of the lower mold in a specific embodiment of this utility model.

[0019] Figure 5 The diagram shown is a structural schematic of the upper mold in a specific embodiment of this utility model.

[0020] Figure 6 The diagram shown is a cross-sectional view of the upper mold in a specific embodiment of this utility model.

[0021] Figure 7 The diagram shown is a structural schematic of the material pulling device and the positioning device in a specific embodiment of this utility model.

[0022] Figure 8 The diagram shown is an installation schematic of the feed roll and take-up roll in a specific embodiment of this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Combination Figures 1 to 8As shown, a strip material punching mechanism includes a horizontally arranged workbench 1 and a punching device and a pulling device respectively arranged on the top surface of the workbench 1. The punching device includes a lower die 2 and an upper die 3 arranged directly above the lower die 2. The top of the upper die 3 is connected to a punching cylinder 4. The pulling device includes a clamping device 5 slidably arranged on the workbench and a pulling cylinder 6 connected to the clamping device 5. A connecting plate 61 is connected to the side of the clamping device 5 near the pulling cylinder 6. There are two pulling cylinders 6, which are respectively connected to the connecting plate 61 through a slide seat 62. The slide seat 62 is slidably arranged on both sides of the strip material through a guide rail 63. The clamping device 5 includes a base 51 connected to the connecting plate 61. A material groove for accommodating the strip material is provided in the base 51. A clamping cylinder 52 is arranged on the top of the base 51 through a cylinder seat. The piston rod of the clamping cylinder 52 is connected to a clamping plate 53 corresponding to the material groove.

[0025] In this technical solution, the workbench is a conventional table surface, horizontally set with conventional support rods, etc. A clamping cylinder drives the clamping device to reciprocate, thereby pulling the strip material in a step-by-step feeding manner. When the strip material stops between the upper and lower dies, the punching cylinder drives the lower die to punch downwards and then reset, completing one cycle of punching the strip material. As the pulling device repeatedly pulls the strip material, the punching device repeatedly punches, achieving automated processing of the corresponding strip material. A connecting arm protrudes upwards from the top of the base near the connecting plate. The connecting plate is connected to the connecting arm by conventional structures such as bolts. The bottom surface of the connecting plate has a recessed limiting groove to accommodate the sliding passage of the strip material. There is a gap between the bottom surface of the base and the top surface of the workbench. The top surface of the base has a recessed material groove along the direction of the strip material and extends through the connecting arm. A pressure block is set at the top of the material groove near the punching device, ensuring that the strip material can only pass through the material groove. The clamping cylinder is vertically fixed by conventional cylinder mounting plates, etc. The piston rod of the clamping cylinder, positioned at the top of the connecting arm, passes through the cylinder mounting plate and is connected to the clamping plate via a conventional connector. A clamping boss protrudes from the bottom of the clamping plate; the width of the clamping boss is less than the width of the material trough, meaning the clamping boss can abut against the top surface of the strip material and clamp it within the trough. The strip material is then pulled by moving the clamping device. Existing guide rail structures are readily available, and the guide rail is mounted to the top surface of the worktable using conventional bolts. Slides are mounted to the sliders of the guide rail using conventional bolts. Two slides are spaced apart and positioned parallel to the direction of the strip material, allowing the strip material to pass between them. Conventional guide rollers are installed at both ends of the worktable to guide the strip material in and out. This strip material punching mechanism has a simple structure and is used for automated strip material feeding. The strip material is pulled by a pulling cylinder and a clamping device, eliminating the need for excessive tensioning devices and avoiding accumulated errors caused by motor-driven feeding.

[0026] For example, see Figures 1 to 7As shown, the lower die 2 includes a lower die base 21 mounted on the top surface of the workbench 1 and a lower template 22 slidably disposed on the lower die base 21. The top of the lower die base 21 is provided with a material channel for accommodating the sliding of the strip material. The lower template 22 is disposed perpendicular to the material channel. The top surface of the lower template 22 is flush with the top surface of the material channel and is provided with a punching hole 221.

[0027] In this technical solution, the lower die base is installed on the top surface of the workbench using conventional bolts and pins, and its top surface has a material channel along the direction of the strip material. The side of the lower die base has conventional sliding grooves such as T-slots or dovetail grooves perpendicular to the material channel. The cross-section of the lower die plate is consistent with the sliding groove and slides in the sliding groove. The top surface of the lower die plate is flush with the top surface of the material channel, which neither interferes with the sliding of the strip material nor punches or bends the strip material. The shape and size of the punching hole are determined according to the part to be processed.

[0028] For example, see Figures 1 to 7 As shown, a push cylinder 7 is connected to one end of the lower template 22, and a material ejector 8 is provided on the other side. The material ejector 8 includes a mounting frame 81 installed on the workbench 1 and a material ejector cylinder 82 located at the bottom of the mounting frame 81. The push plate of the material ejector cylinder 82 is connected to a push rod 83. The push rod 83 slides through the mounting frame 81, and a material ejector hole 222 corresponding to the push rod 83 is provided in the punching hole 221.

[0029] In this technical solution, the push cylinder is installed on the corresponding side of the worktable via a conventional cylinder bracket, and its piston rod is connected to the lower template via a conventional connector, driving the lower template back and forth between the lower mold base and the ejector device. The mounting bracket is fixed to the side of the worktable away from the push cylinder via conventional bolts. The push plate of the ejector cylinder is connected to two ejector rods via threaded connections. The top surface of the mounting bracket is provided with a waist-shaped through hole corresponding to the ejector rods. Two ejector holes are provided in the punching hole. After the upper mold punches and resets, the push cylinder pushes the lower template to the top of the ejector device. Positioned by conventional sensors and dampers, the ejector cylinder pushes the ejector rods up, passing through the ejector holes and ejecting the punched parts out of the punching holes, making it convenient for external robots to grip or adsorb and remove the parts.

[0030] For example, see Figures 1 to 6 As shown, the upper mold 3 includes an upper mold frame 31 mounted on the worktable 1, an upper mold base 32 slidably connected to the upper mold frame 31, and a punch 33 mounted on the upper mold base 32. The punching cylinder 4 is fixed to the top of the upper mold frame 31, and its piston rod is connected to the upper mold base 32. The punching cylinder 4, the punch 33, and the punching hole 221 are coaxially arranged.

[0031] In this technical solution, the punch is installed on the upper die base and suspended above the lower die base by the upper die frame. The punching cylinder is vertically installed on the top of the upper die frame by conventional bolts, etc. The punching cylinder, punch and punching hole are coaxially arranged to avoid damage to the punching cylinder, punch and punching hole.

[0032] For example, see Figures 1 to 6 As shown, the upper mold base 31 includes a top plate 311 disposed directly above the lower mold base 21 and a support column 312 supported between the top plate 311 and the worktable 1. The upper mold base 32 includes a lifting plate 321 slidably connected to the support column 312, a connecting block 322 fixed to the top of the lifting plate 321, and a pressure plate 323 slidably connected to the bottom of the lifting plate 321. The punching cylinder 4 is fixed to the top of the top plate 311, and the piston rod is connected to the connecting block 322.

[0033] In this technical solution, a conventional shaft-shaped support column can be used, and its upper and lower ends are connected to the top plate and the worktable respectively by conventional bolts. The lifting plate is slidably connected to the support column by conventional linear bearings. The bottom end of the connecting block is installed to the top end of the lifting plate by conventional bolts. The top end of the connecting block is connected to the piston rod of the punching cylinder by conventional connectors. The lifting plate is provided with a T-shaped hole for installing the punch. The outer contour of the punch is a T-shaped structure and is fixed in the T-shaped hole of the lifting plate by the connecting block. The punching cylinder drives the lifting plate to rise and fall through the connecting block, which in turn drives the punch to rise and fall, thereby completing the punching.

[0034] For example, see Figures 1 to 6 As shown, the pressure plate 323 is slidably connected to the lifting plate 321 via a guide rod, and a first spring (not shown) is sleeved on the guide rod between the pressure plate 323 and the lifting plate 321. The bottom end of the pressure plate 323 has a pressure protrusion corresponding to the material channel.

[0035] In this technical solution, the pressure plate has a central hole and is slidably fitted onto the punch. During the punching process, the pressure boss of the pressure plate first contacts the strip material in the material channel, pressing the strip material tightly to prevent displacement during punching. The piston rod of the punching cylinder continues to extend, and the punch extends out of the pressure plate to complete the punching, improving punching accuracy. After punching, the punching cylinder resets, the punch rises, and the pressure plate remains stationary under the action of the first spring or its own gravity until the washer at the top of the guide rod abuts against the top of the pressure plate. The pressure plate then resets along with the punch and the lifting plate. The length is greater than the thickness of the lifting plate. Its top end protrudes a limiting boss or is connected to a washer by bolts. Its bottom end is fixed to the pressure plate by bolts. The inner wall of the guide hole in the lifting plate, which is used to accommodate the sliding of the guide column, is recessed with a limiting groove (i.e., the guide hole is a stepped hole structure). One end of the first spring is set in the limiting groove and sleeved on the guide column. Two positioning pins protrude from the bottom surface of the guide boss. Positioning holes 223 corresponding to the positioning pins are respectively set on both sides of the punching hole to improve the punching accuracy. The positioning holes 223 and the positioning pins are located on both sides of the strip material.

[0036] For example, see Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the punch 33 includes an outer punch 331 mounted on the lifting plate 321 and an inner punch 332 slidably disposed on the outer punch 331. The bottom end of the outer punch 331 slidably passes through the pressure plate 323. The inner punch 332 includes a punching section, a connecting section and a limiting section arranged in sequence. The punching section, the connecting section and the limiting section are coaxially arranged and their radii increase sequentially. The punching section slidably passes through the outer punch 331. A second spring 333 is provided between the limiting section and the outer punch 331 and sleeved on the connecting section. The connecting block 322 is provided with a clearance hole corresponding to the inner punch 332. The length of the punching section is greater than the sum of the length of the outer punch 331 and the thickness of the strip material.

[0037] In this technical solution, the punch includes an outer punch and an inner punch, used for processing ring-shaped parts. The piston rod of the punching cylinder is slidably connected to a connecting block via a connector. The top of the connecting block is provided with a T-shaped connecting groove, and the connector is slidably disposed in the T-shaped connecting groove. During the punching process, the piston rod of the punching cylinder extends, and through the action of the inner punch and a second spring, it acts on the outer punch, thereby driving the lifting plate to move downward. The lifting plate then acts on the first spring, driving the pressure plate to move downward. The positioning pin is inserted into the corresponding positioning hole to provide positioning accuracy for the punch and the lower die. The pressure boss of the pressure plate first contacts the strip material in the material channel, pressing the strip material tightly to prevent displacement during the punching process. The piston rod of the punching cylinder continues to extend. The inner and outer punches continue to move downwards. After the outer punch contacts the top surface of the strip, the shearing force required for punching is less than the compression force of the second spring. The outer punch completes the corresponding punching, and the piston rod of the punching cylinder continues to extend. The inner punch squeezes the second spring, that is, the inner punch slides relative to the outer punch and completes the punching of the center hole of the part. The punching cylinder resets. Under the action of the second spring, the inner punch slides back to its original position relative to the outer punch. Then, the connecting head and the T-shaped connecting groove work together to drive the connecting block, the lifting plate and the outer punch to rise. Under the action of the first spring or its own gravity, the pressure plate remains stationary until the pad at the top of the guide rod abuts against the top of the pressure plate. The pressure plate resets along with the punch and the lifting plate.

[0038] For example, see Figures 1 to 7 As shown, the center of the punching hole 221 is provided with a discharge hole 224 corresponding to the inner punch 332. The lower die base 21 and the worktable 1 are respectively provided with discharge channels corresponding to the discharge hole 224. A waste collection frame is provided below the worktable 1.

[0039] In this technical solution, the waste generated from punching the center hole of the part falls into the waste collection frame along the discharge hole and discharge channel for centralized collection and processing.

[0040] For example, see Figures 1 to 7 As shown, a positioning device 9 is provided between the punching device and the material pulling device.

[0041] In this technical solution, the positioning device and the clamping device have the same structure and are set opposite to each other. The base of the positioning device is fixed to the top surface of the worktable by conventional bolts. By changing the thickness of the base of the positioning device, the material groove of the positioning device and the material groove of the clamping device are kept at the same height. After the clamping device completes the feeding, the positioning device fixes the strip material. The clamping device can release the strip material and move simultaneously with the punching action. By fixing the clamping device, the traction of the processed strip material by the punching device is avoided during the punching process.

[0042] For example, see Figure 1 and Figure 8As shown, it also includes a feeding roll 10 and a take-up roll 20. The strip material is fed out by the feeding roll 10 and passes through the punching device, positioning device and pulling device in sequence before entering the take-up roll 20. The take-up roll 20 is connected to a take-up motor.

[0043] In this technical solution, both the unwinding and rewinding rolls can utilize existing structures. After the positioning device holds the strip material, the processed strip is wound up by the rewinding roll. A steering wheel is provided on one side of the rewinding roll to guide the strip material. A sensor is provided below the steering wheel to abut against the strip material. The sensor is a conventional contact sensor or pressure sensor, etc. Before winding, the strip material is loose and bent and contacts the sensor's sensing contact. After winding, the strip material is tensioned and disengaged from the sensor's sensing contact, confirming that the winding is in place.

[0044] In summary, the strip material punching mechanism of this utility model has a simple structure and is used for automated feeding of strip materials. It pulls the strip material through a pulling cylinder and a clamping device, eliminating the need for excessive tensioning devices and avoiding the accumulation of errors caused by motor conveying.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A strip material punching mechanism, characterized in that, The device includes a horizontally arranged worktable and a punching device and a material pulling device respectively disposed on the top surface of the worktable. The punching device includes a lower die and an upper die disposed directly above the lower die. The top end of the upper die is connected to a punching cylinder. The material pulling device includes a clamping device slidably disposed on the worktable and a material pulling cylinder connected to the clamping device. A connecting plate is connected to the side of the clamping device near the material pulling cylinder. There are two material pulling cylinders, each connected to the connecting plate via a sliding block. The sliding blocks are slidably disposed on both sides of the strip material via guide rails. The clamping device includes a base connected to the connecting plate. A material groove for accommodating the strip material is disposed inside the base. A clamping cylinder is disposed at the top end of the base via a cylinder seat. The piston rod of the clamping cylinder is connected to a clamping plate corresponding to the material groove.

2. The strip material punching mechanism according to claim 1, characterized in that: The lower die includes a lower die base mounted on the top surface of the workbench and a lower template slidably disposed on the lower die base. The top of the lower die base is provided with a material channel for accommodating the sliding of the strip material. The lower template is disposed perpendicular to the material channel. The top surface of the lower template is flush with the top surface of the material channel and is provided with a punching hole.

3. The strip material punching mechanism according to claim 2, characterized in that: A push cylinder is connected to one end of the lower template, and a material ejector is provided on the other side. The material ejector includes a mounting frame installed on the workbench and a material ejector cylinder located at the bottom of the mounting frame. A push plate of the material ejector cylinder is connected to a push rod, which slides through the mounting frame. A material ejector hole corresponding to the push rod is provided in the punching hole.

4. The strip material punching mechanism according to claim 2, characterized in that: The upper die includes an upper die frame mounted on the worktable, an upper die base slidably connected to the upper die frame, and a punch mounted on the upper die base. The punching cylinder is fixed to the top of the upper die frame, and its piston rod is connected to the upper die base. The punching cylinder, punch, and punching hole are coaxially arranged.

5. The strip material punching mechanism according to claim 4, characterized in that: The upper mold frame includes a top plate disposed directly above the lower mold base and a support column supporting the top plate and the worktable. The upper mold base includes a lifting plate slidably connected to the support column, a connecting block fixed to the top of the lifting plate, and a pressure plate slidably connected to the bottom of the lifting plate. The punching cylinder is fixed to the top of the top plate, and the piston rod is connected to the connecting block.

6. The strip material punching mechanism according to claim 5, characterized in that: The pressure plate is slidably connected to the lifting plate via a guide rod, and a first spring sleeved on the guide rod is provided between the pressure plate and the lifting plate. The bottom end of the pressure plate has a pressure protrusion corresponding to the material channel.

7. The strip material punching mechanism according to claim 5, characterized in that: The punch includes an outer punch mounted on the lifting plate and an inner punch slidably disposed on the outer punch. The bottom end of the outer punch slidably passes through the pressure plate. The inner punch includes a punching section, a connecting section, and a limiting section arranged sequentially. The punching section, connecting section, and limiting section are coaxially arranged, and their radii increase sequentially. The punching section slidably passes through the outer punch. A second spring is provided between the limiting section and the outer punch and sleeved on the connecting section. An avoidance hole corresponding to the inner punch is provided in the connecting block. The length of the punching section is greater than the sum of the length of the outer punch and the thickness of the strip material.

8. The strip material punching mechanism according to claim 7, characterized in that: The center of the punching hole is provided with a discharge hole corresponding to the inner punch. The lower die base and the worktable are respectively provided with discharge channels corresponding to the discharge hole. A waste collection frame is provided below the worktable.

9. The strip material punching mechanism according to claim 1, characterized in that: A positioning device is provided between the punching device and the material pulling device.

10. The strip material punching mechanism according to claim 9, characterized in that: It also includes a feeding roll and a taking roll. The strip material is fed out by the feeding roll and passes through the punching device, positioning device and pulling device in sequence before entering the taking roll. The taking roll is connected to a taking motor.

Images