Inclined rib plate forming machine

Abstract

The utility model provides an inclined rib plate forming machine which is sequentially provided with a feeding device, a discharging device, a forming device and a forming device along a plate rib piece conveying route, wherein the feeding device is used for obtaining and conveying plate rib pieces; the feeding positioning device comprises a supporting frame and a feeding table, a positioning assembly is arranged on the feeding table and comprises a first positioning plate and a second positioning plate, the first positioning plate is transversely arranged, and the second positioning plate can swing circumferentially; the plate rib piece is a trapezoidal plate rib piece, the second positioning plate swings to push the bevel edge of the plate rib piece to be straightened, and the straight edge of one side of the plate rib piece abuts against the side edge of the first positioning plate; the forming compression roller device bends the bevel edge of the plate rib piece through a series of rollers to form a folded edge; the straightening device is provided with two straightening mechanisms on the left side and the right side, and the two straightening mechanisms are distributed in a front-back staggered mode. The straightening mechanism comprises a supporting seat, a first vertical pressing roller and a second vertical pressing roller, the first vertical pressing roller and the second vertical pressing roller are installed on the supporting seat, and a gap is formed between the first vertical pressing roller and the second vertical pressing roller and allows the folded edge to pass through. And the discharging device outputs the finally formed inclined rib plate.

Description

Technical Field

[0001] This utility model relates to a tailgate pressure roller forming equipment, and more particularly to a diagonal rib forming machine. Background Technology

[0002] Traditional automotive tailgate load-bearing platforms achieve their load-bearing capacity and stability requirements by using high-strength steel, bending and forming, splicing and welding, and crisscrossing horizontal and vertical ribs. This process involves bending steel plates into the required angles and shapes using a bending machine to form the basic structure of the load-bearing platform.

[0003] The diagonal ribs in a car tailgate are an important component of the tailgate structure, playing a role in enhancing structural strength and stability. A diagonal rib is a trapezoidal or triangular steel section with a channel-shaped cross-section. It is formed by pressing a trapezoidal rib piece using a bending machine. Currently, diagonal rib production relies heavily on manual feeding, manual alignment of the trapezoidal rib's beveled edges, and then pressing it using a specific bending machine. Bevel alignment is to create a symmetrical diagonal rib. Current diagonal rib production is highly dependent on manual labor, inconvenient to operate, inefficient, and costly in terms of labor. Utility Model Content

[0004] This utility model aims to solve the problems of high manufacturing costs and low efficiency caused by manual feeding of inclined rib plates. Therefore, it provides an inclined rib plate forming machine that adopts fully automated feeding and unloading and a series of automated pressing rollers to reduce labor costs and improve production efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a ribbed plate forming machine, which is provided with a feeding device, a feeding positioning device, a forming pressure roller device, a straightening device, a discharging device and a central control system in sequence along the transport route of the ribbed plate.

[0006] The feeding device is used to acquire the rib reinforcement components and transport them to the feeding and positioning device.

[0007] The feeding and positioning device includes a support frame and a feeding platform movably mounted on the support frame. The feeding platform is used to transport the rib pieces to the forming roller device. A positioning component is provided on the feeding platform. The positioning component includes a first positioning plate and a second positioning plate. The first positioning plate is arranged laterally, and the second positioning plate can swing circumferentially on the table surface of the feeding platform.

[0008] The rib is a trapezoidal rib. The second positioning plate swings to push the inclined side of the rib to be straightened, and one straight edge of the rib abuts against the side of the first positioning plate.

[0009] The forming roller device bends the inclined edge of the plate stiffener to form a folded edge through a series of rollers;

[0010] The straightening device has two straightening mechanisms on the left and right sides, and the two straightening mechanisms are staggered front to back; the straightening mechanism includes a support base and a first vertical pressure roller and a second vertical pressure roller installed on the support base, and there is a gap between the first vertical pressure roller and the second vertical pressure roller for the folding edge to pass through;

[0011] The discharge device outputs the final shaped inclined rib plate.

[0012] In a preferred embodiment, two first tracks are arranged parallel to each other on the left and right sides of the support frame, and a first movable seat is provided at the bottom of the feeding platform corresponding to the first tracks on both sides, and the first movable seat slides in cooperation with the first tracks.

[0013] A drive cylinder is provided on the side of the support frame away from the forming roller device. The drive end of the drive cylinder is connected to the feeding table and is used to drive the feeding table to move back and forth along the first track.

[0014] In a preferred embodiment, the feeding and positioning device further includes an auxiliary feeding mechanism, which includes second tracks arranged parallel to the left and right sides of the support frame, and a conveying roller shaft arranged transversely between the two second tracks; the second tracks are arranged inside the first track.

[0015] The two ends of the conveying roller shaft are slidably engaged with the second track through two second movable seats; the second movable seats slide along the second track under the push of the feeding table.

[0016] In a preferred embodiment, two limiting blocks are provided at both ends of the second track, the limiting blocks restricting the second movable seat from disengaging from the second track.

[0017] In a preferred embodiment, a tension spring is provided between the limiting block at one end of the second track near the feeding table and the second movable seat.

[0018] In a preferred embodiment, a rotating mechanism is provided below the feeding table, and the rotating mechanism is connected to the second positioning plate to drive the second positioning plate to swing.

[0019] In a preferred embodiment, the rotating mechanism includes a worm gear transmission assembly, and the second positioning plate is connected to the worm gear of the worm gear transmission assembly via a connecting rod passing through the feeding table.

[0020] In a preferred embodiment, the forming pressure roller device includes a roller pressing group and a roller transport group. The roller transport group is used for transporting the rib member. The roller pressing group includes two sets of pressure roller assemblies arranged on the left and right sides. The two sets of pressure roller assemblies are used for pressing the two inclined sides of the rib member.

[0021] In a preferred embodiment, the support base includes a mounting plate, the first vertical pressure roller is fixed on the mounting plate, and the second vertical pressure roller is movably mounted on the mounting plate, with the gap size adjusted by moving the second vertical pressure roller.

[0022] In a preferred embodiment, the mounting end of the second vertical pressure roller is provided with a mounting block, the mounting plate is provided with a mounting groove corresponding to the mounting block, and the mounting block is provided with an adjusting rod on the side away from the first vertical pressure roller, the adjusting rod passing through the mounting groove;

[0023] The adjusting rod drives the mounting block to move back and forth within the mounting groove in the direction toward the first vertical pressure roller.

[0024] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0025] 1. By employing a series of automated equipment, including a feeding device, a feeding and positioning device, a forming roller device, a straightening device, and a discharging device, the automated forming production of inclined rib plates is achieved. These devices effectively reduce labor costs and improve production efficiency through fully automated loading and unloading and a series of automated pressing rollers.

[0026] 2. By setting up a feeding and positioning device, in which the first positioning plate cooperates with the rotating second positioning plate, the bevel of the trapezoidal plate ribs can be adjusted. This design ensures that the trapezoidal plate ribs are pressed symmetrically to form qualified inclined ribs with a channel-shaped cross-section. The feeding and positioning device replaces the manual bevel correction process, reducing labor costs.

[0027] 3. During the forming process, a straightening device is used, with the first and second vertical pressure rollers plastically pressing the right angle of the bent edge. This step is crucial for forming a qualified inclined rib plate with a channel-shaped cross-section, ensuring the quality and precision of the inclined rib plate.

[0028] 4. By setting up a feeding positioning device and a straightening device, and through automated and precision forming equipment, the production capacity and product quality of inclined stiffeners can be greatly improved. Attached Figure Description

[0029] Figure 1 This is a complete machine drawing of the inclined rib forming machine in a preferred embodiment of this utility model;

[0030] Figure 2This is a structural diagram of the feeding and positioning device in a preferred embodiment of the present invention;

[0031] Figure 3 This is a structural diagram of the feeding platform in a preferred embodiment of the present invention;

[0032] Figure 4 This is a structural diagram of the rotating mechanism in a preferred embodiment of the present invention;

[0033] Figure 5 This is a structural diagram of the feed platform drive cylinder in a preferred embodiment of the present invention;

[0034] Figure 6 This is a structural diagram of the first track and the second track in a preferred embodiment of the present invention;

[0035] Figure 7 This is a structural diagram of the forming roller device in a preferred embodiment of the present invention;

[0036] Figure 8 This is a structural diagram of the straightening mechanism in a preferred embodiment of the present invention;

[0037] Figure 9 This is a structural diagram of the inclined stiffener plate in a preferred embodiment of the present invention.

[0038] Explanation of reference numerals in the attached drawings: 1. Feeding and positioning device; 11. Support frame; 12. Feeding platform; 121. First moving seat; 13. First track; 14. Drive cylinder; 15. First positioning plate; 16. Second positioning plate; 161. Connecting rod; 17. Rotating mechanism; 171. Worm gear; 18. Second track; 181. Limiting block; 182. Tension spring; 19. Conveying roller shaft; 191. Second moving seat; 2. Forming pressure roller device; 21. Roller pressing group; 22. Roller conveying group; 23. Upper pressure roller; 24. Lower pressure roller; 3. Straightening device; 31. Support seat; 32. First vertical pressure roller; 33. Second vertical pressure roller; 34. Mounting plate; 35. Mounting block; 36. Mounting groove; 37. Adjusting rod; 4. Discharge device; 5. Rib; 51. Straight edge; 52. Bevel; 53. Folded edge; 6. Beveled rib plate. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0042] refer to Figures 1-9 This embodiment provides a rib forming machine, which includes a feeding device, a feeding positioning device 1, a forming pressure roller device 2, a straightening device 3, a discharging device 4, and a central control system arranged sequentially along the rib component transport route. This allows a rib component 5 cut into a trapezoidal shape to be pressed by the rib forming machine into a trapezoidal or triangular steel structure with a channel-shaped cross-section (e.g., Figure 9 ).

[0043] The feeding device consists of a robotic arm for picking up materials and a storage platform. A stack of pre-cut trapezoidal rib members 5 is placed on the storage platform. The robotic arm picks up the rib members 5 and then transports them to the feeding and positioning device 1. The robotic arm can pick up and transport the rib members 5 using a suction cup structure. The robotic arm can utilize existing robotic arms to perform the feeding function.

[0044] like Figure 2 The feeding and positioning device 1 includes a support frame 11 and a feeding platform 12. Two first tracks 13 are arranged parallel to each other on the left and right sides of the support frame 11. A first movable seat 121 is provided at the bottom of the feeding platform 12 corresponding to the first tracks 13 on both sides. The first movable seat 121 slides with the first tracks 13. A drive cylinder 14 (e.g., ...) is provided at the front side of the support frame 11. Figure 5The rear side of the support frame 11 is the feeding side, and the rib piece 5 is pushed into the forming roller device 2 by the feeding side for the pressing process. The driving end of the drive cylinder 14 is connected to the feeding table 12, and the drive cylinder 14 can perform forward and backward extension movements, thereby driving the feeding table 12 to move forward and backward along the first track 13, so as to push the rib piece 5 into the forming roller device 2.

[0045] Since the rib member 5 has a trapezoidal structure, when the rib member 5 is placed on the feeding table 12, the inclined side 52 of the rib member 5 needs to be corrected. Therefore, a positioning assembly is provided on the feeding table 12. The positioning assembly includes a first positioning plate 15 and a second positioning plate 16 (e.g., Figure 3 The first positioning plate 15 is centrally located on the feeding table 12, and is positioned near the rear side of the feeding table 12, which is the side away from the forming roller device 2. The first positioning plate 15 is horizontally positioned and is used to position one straight edge 51 of the rib member 5, which is the side that is last pushed into the forming roller device 2. The second positioning plate 16 is located on one side of the first positioning plate 15 and is equipped with a rotating mechanism 17. The second positioning plate 16 can be rotated by the rotating mechanism 17, and the second positioning plate 16 swings circumferentially within the table surface of the feeding table 12. The second positioning plate 16 is used to position the trapezoidal inclined edge 52 of the rib member 5, and the rotation of the second positioning plate 16 pushes the inclined edge 52 of the rib member 5 to be aligned.

[0046] The positions of the first positioning plate 15 and the second positioning plate 16, and their cooperation with the plate reinforcement 5, are as follows: Figure 6 The rotating mechanism 17 is installed below the feeding table 12, and the rotating mechanism 17 adopts a worm gear 171 worm drive assembly (such as... Figure 4 The second positioning plate 16 passes through the feeding table 12 via the connecting rod 161 and is connected to the worm gear 171 located below the feeding table 12. The worm gear 171 rotates, and the worm is connected to a drive motor.

[0047] The rotation angle of the second positioning plate 16 can be set through the central control system. It is known that the angle between the straight edge 51 and the trapezoidal hypotenuse 52 on one side of the rib member 5 is a°. Let the rotation angle between the extension line of the first positioning plate 15 and the second positioning plate 16 be a°. The first positioning plate 15 is in a fixed position, and the second positioning plate 16 can rotate. By setting the rotation angle of the worm gear 171, the second positioning plate 16 is driven to rotate and swing until it forms an angle of a° with the extension line of the first positioning plate 15. The rotation angle of the worm gear 171 is set to A°. After setting the swing angle of the second positioning plate 16 to a fixed value each time, the rib member 5 is fed. Through the rotation and swing of the second positioning plate 16 at the fixed angle, the position correction of the rib member 5 is achieved in conjunction with the first positioning plate 15.

[0048] To ensure the smooth feeding of the rib member 5 into the forming roller device 2, an auxiliary feeding mechanism (such as...) is provided on the rear side of the support frame 11. Figure 6 The auxiliary feeding mechanism includes second tracks 18 arranged parallel to each other on the left and right sides of the support frame 11, and a conveying roller shaft 19. The two ends of the conveying roller shaft 19 are slidably engaged with the second tracks 18 through two second movable seats 191. One straight edge 51 of the rib member 5 is placed on the feeding table 12, and the other straight edge 51 of the rib member 5 is placed on the conveying roller shaft 19, forming support for both sides of the rib member 5.

[0049] The second track 18 is located inside the first track 13. The conveyor roller 19 is a non-powered roller. When the feeding table 12 moves forward along the first track 13 and the rib piece 5 is pushed into the forming roller device 2, the conveyor roller 19 and the rib piece 5 are rubbed together, causing the conveyor roller 19 to roll and push the rib piece 5. When the feeding table 12 continues to move forward along the first track 13 until the feeding table 12 moves to the front side and abuts against the second moving seat 191, the feeding table 12 pushes the second moving seat 191 to slide along the second track 18 to further push the rib piece 5 until the rib piece 5 is completely pushed into the forming roller device 2.

[0050] Two limiting blocks 181 are provided at both ends of the second track 18 (e.g., Figure 2 The limiting block 181 restricts the movement of the second moving seat 191. When the feeding table 12 pushes the second moving seat 191 to begin the final push of the rib 5, the limiting block 181 at the end of the second track 18 near the forming roller device 2 will restrict the movement of the second moving seat 191 towards the forming roller device 2, preventing interference between the two devices and thus avoiding equipment damage. A tension spring 182 is provided between the limiting block 181 at the end of the second track 18 near the feeding table 12 and the second moving seat 191 (e.g., a tension spring 182). Figure 5 After the rib piece is pushed, the feeding table 12 moves back to its original position under the drive of the drive cylinder 14, and the conveying roller 19 is pulled back to its initial position under the action of the tension spring 182, that is, it returns to the end of the second track 18 near the feeding table 12.

[0051] like Figure 7 The forming pressure roller device 2 includes a roller pressing group 21 and a roller conveying group 22. The roller pressing group 21 is used to plastically deform the rib member 5, and the roller conveying group 22 is used to transport the rib member 5. The roller pressing group 21 includes two sets of pressure roller assemblies arranged on the left and right sides for pressing the two inclined edges 52 of the rib member 5, so that the rib member 5 is pressed to form a groove-shaped cross-section structure.

[0052] Both the roller pressing group 21 and the roller transport group 22 include an upper pressing roller 23 and a lower pressing roller 24. The upper pressing roller 23 and the lower pressing roller 24 on both sides are symmetrically arranged. By setting the rollers at different heights and different angles of the pressing surfaces, the rollers continuously rotate and press the inclined edge 52 of the rib member 5 under corresponding pressure and speed, causing it to bend and deform, thereby forming the structure of the inclined rib plate 6.

[0053] The forming roller device 2 can be an existing roll forming machine that can press the sheet reinforcement 5 into a C-shaped steel through continuous rolling action using a series of rollers.

[0054] The straightening device 3 is located at the output end of the forming roller device 2. It is used to straighten the waist height of the forming rib 5 after it has been formed, preventing the bent edge 53 from having vertical edges, wavy edges, uneven waist, or other defects. The straightening device 3 has two straightening mechanisms on the left and right sides (e.g., Figure 8 The two straightening mechanisms are staggered. The straightening mechanism includes a support base 31 and a first vertical pressure roller 32 and a second vertical pressure roller 33 mounted on the support base 31. Both the first vertical pressure roller 32 and the second vertical pressure roller 33 are unpowered rollers, rolling as the inclined rib plate 6 is transported after forming. A gap exists between the first vertical pressure roller 32 and the second vertical pressure roller 33, allowing the bent edge 53 to pass through. The bent edge 53 is pressed by the first vertical pressure roller 32 and the second vertical pressure roller 33, forming a right-angled structure (e.g., ...). Figure 9 ).

[0055] The support base 31 includes a mounting plate 34, a first vertical pressure roller 32 fixed on the mounting plate 34, and a second vertical pressure roller 33 movably mounted on the mounting plate 34. A mounting block 35 is provided at the mounting end of the second vertical pressure roller 33. A mounting groove 36 is provided on the mounting plate 34 corresponding to the mounting block 35. An adjusting rod 37 is provided on the side of the mounting block 35 away from the first vertical pressure roller 32, and the adjusting rod 37 passes through the mounting groove 36 (e.g., ...). Figure 8 The adjusting rod 37 can drive the mounting block 35 to move back and forth in the mounting groove 36 in the direction toward the first vertical pressure roller 32, thereby driving the second vertical pressure roller 33 to adjust the gap between it and the first vertical pressure roller 32 to adapt to the thickness of the rib 5.

[0056] The processing flow of the inclined rib forming machine is as follows: a rib piece 5 that has been cut into a trapezoidal shape is transported by the feeding device to the feeding positioning device 1; the rib piece 5 is placed on the feeding table 12, and one straight edge 51 of the rib piece 5 abuts against the side of the first positioning plate 15; the second positioning plate 16 rotates to straighten the trapezoidal inclined edge 52 of the rib piece 5; after straightening, the drive cylinder 14 drives the feeding table 12 forward to push the rib piece 5 to the forming pressure roller device 2; until all the rib pieces 5 are conveyed to the forming pressure roller device 2, the drive cylinder 14 drives the feeding table 12 to reset and wait for the next rib piece 5 to be fed.

[0057] The rib member 5 is pressed into a C-shaped structure to form a diagonal rib plate 6 by a series of rollers in the forming roller device 2 through continuous rolling action. It is then transported by the roller transport group 22 and output from the forming roller device 2 to the straightening device 3. The two folded edges 53 of the rib member 5 after bending enter the straightening mechanisms on both sides, where they are pressed and shaped by the first vertical roller 32 and the second vertical roller 33. Finally, the formed diagonal rib plate 6 is output from the straightening mechanism and enters the discharge device 4. The discharge device 4 includes output rollers, which transport the formed diagonal rib plate 6 to the discharge conveyor belt for the next process. The output from the discharge device 4 is the final formed diagonal rib plate 6.

[0058] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A machine for forming inclined ribs, characterized in that: Along the transport route of the steel reinforcement components, there are sequentially a feeding device, a feeding positioning device, a forming pressure roller device, a straightening device, a discharging device, and a central control system; The feeding device is used to acquire the rib reinforcement components and transport them to the feeding and positioning device. The feeding and positioning device includes a support frame and a feeding platform movably mounted on the support frame. The feeding platform is used to transport the rib pieces to the forming roller device. A positioning component is provided on the feeding platform. The positioning component includes a first positioning plate and a second positioning plate. The first positioning plate is arranged laterally, and the second positioning plate can swing circumferentially on the table surface of the feeding platform. The rib is a trapezoidal rib. The second positioning plate swings to push the inclined side of the rib to be straightened, and one straight edge of the rib abuts against the side of the first positioning plate. The forming roller device bends the inclined edge of the plate stiffener to form a folded edge through a series of rollers; The straightening device has two straightening mechanisms on the left and right sides, and the two straightening mechanisms are staggered front to back; the straightening mechanism includes a support base and a first vertical pressure roller and a second vertical pressure roller installed on the support base, and there is a gap between the first vertical pressure roller and the second vertical pressure roller for the folding edge to pass through; The discharge device outputs the final shaped inclined rib plate.

2. The inclined rib forming machine according to claim 1, characterized in that: The support frame has two parallel first tracks on its left and right sides, and the bottom of the feeding platform is provided with a first movable seat corresponding to the first tracks on both sides, and the first movable seat slides in cooperation with the first tracks. A drive cylinder is provided on the side of the support frame away from the forming roller device. The drive end of the drive cylinder is connected to the feeding table and is used to drive the feeding table to move back and forth along the first track.

3. The inclined rib forming machine according to claim 2, characterized in that: The feeding and positioning device also includes an auxiliary feeding mechanism, which includes second tracks arranged parallel to the left and right sides of the support frame, and a conveying roller shaft arranged horizontally between the two second tracks; the second tracks are arranged inside the first track. The two ends of the conveying roller shaft are slidably engaged with the second track through two second movable seats; the second movable seats slide along the second track under the push of the feeding table.

4. The inclined rib forming machine according to claim 3, characterized in that: Two limiting blocks are provided at both ends of the second track, and the limiting blocks restrict the second movable seat from leaving the second track.

5. The inclined rib forming machine according to claim 4, characterized in that: A tension spring is provided between the limiting block and the second movable seat at one end of the second track near the feeding table.

6. The inclined rib forming machine according to claim 1, characterized in that: A rotating mechanism is provided below the feeding platform. The rotating mechanism is connected to the second positioning plate and is used to drive the second positioning plate to swing.

7. The inclined rib forming machine according to claim 6, characterized in that: The rotating mechanism includes a worm gear transmission assembly, and the second positioning plate is connected to the worm gear of the worm gear transmission assembly via a connecting rod passing through the feeding table.

8. The inclined rib forming machine according to claim 1, characterized in that: The forming pressure roller device includes a roller pressing group and a roller transport group. The roller transport group is used for transporting the rib piece. The roller pressing group includes two sets of pressure roller assemblies arranged on the left and right sides. The two sets of pressure roller assemblies are used for pressing the two inclined sides of the rib piece.

9. The inclined rib forming machine according to claim 1, characterized in that: The support base includes a mounting plate, the first vertical pressure roller is fixed on the mounting plate, and the second vertical pressure roller is movably mounted on the mounting plate. The gap size is adjusted by moving the second vertical pressure roller.

10. A rib forming machine according to claim 9, characterized in that: The second vertical pressure roller is provided with a mounting block at its mounting end, and the mounting plate is provided with a mounting groove corresponding to the mounting block. The mounting block is provided with an adjusting rod on the side away from the first vertical pressure roller, and the adjusting rod passes through the mounting groove. The adjusting rod drives the mounting block to move back and forth within the mounting groove in the direction toward the first vertical pressure roller.

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