Downward pressing device of door handle laser welding machine

Abstract

The utility model relates to a downward pressing device of a door handle laser welding machine, a stroke cavity for installing a reset device is formed between a tool clamp and a second rotating disc, the tool clamp can axially move above the second rotating disc through the reset device, a third rotating disc is arranged between a first pressing block and a downward pressing mechanism, and the third rotating disc is provided with a second pressing block. A connecting structure is arranged between the third rotating disc and the second rotating disc, the second rotating disc and the third rotating disc can synchronously rotate when the third rotating disc is pressed downwards, and the pressing mechanism is perpendicularly provided with at least two third pressing blocks which can press the tool clamp downwards to enable a machined product to be partially exposed to the outside to be welded by a welding structure. And an auxiliary rotating structure is arranged on the side, located on the second rotating disc, of the first rotating disc, a third pressing block is arranged so that a machined product can be partially exposed, the welding mechanism can be promoted to directly complete welding machining of the door handle through synchronous rotation of the third rotating disc and the second rotating disc in the die casting process, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic processing equipment technology, specifically to a pressing device for a door handle laser welding machine. Background Technology

[0002] A door handle laser welding machine is a highly efficient piece of equipment specifically designed for welding door handles. Utilizing advanced laser technology, it performs precise welding, boasting high precision and efficiency. It can quickly complete door handle welding tasks and also exhibits excellent stability and reliability, maintaining consistent welding results over extended periods. Furthermore, the door handle laser welding machine is easy to operate and maintain, providing users with a convenient experience. Whether in industrial production or daily life, it is an ideal choice for door handle welding.

[0003] CN210306351U discloses a door handle welding device, including a base, a turntable, a drive motor, a clamping mechanism, and a welding mechanism. The turntable is positioned above the base, and the drive motor is installed inside the base. The output shaft of the drive motor passes through the top plate of the base and is fixedly connected to the center of the turntable. A clamp is fixedly installed on the turntable. The clamping mechanism and the welding mechanism are arranged around the turntable, and both the clamping mechanism and the welding mechanism are fixedly installed on the top plate of the base. This utility model's door handle welding mechanism has four stations arranged sequentially: loading, clamping, welding, and unloading. The turntable rotates under the drive of the drive motor, and the door handle automatically completes the loading, positioning, clamping, welding, and unloading processes in sequence. However, the pressing device of this technology requires the die-casting process to be completed before rotating to the welding point for welding. Welding cannot be performed simultaneously with die-casting, resulting in low production efficiency. Therefore, this technology still has room for improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a pressing device for a door handle laser welding machine, which addresses the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressing device for a door handle laser welding machine, comprising a rotating base and a first rotating disk disposed on the upper end of the rotating base, wherein a plurality of tooling fixtures are mounted above the first rotating disk, a die-casting frame for mounting a pressing mechanism is provided on one side of the rotating base, and a first pressing block for die-casting in cooperation with the tooling fixtures is provided at the bottom of the pressing mechanism, characterized in that: a second rotating disk is provided between the tooling fixtures and the first rotating disk, and a travel cavity for mounting a reset device is formed between the tooling fixtures and the second rotating disk, the tooling fixtures can move axially above the second rotating disk through the reset device, a third rotating disk is provided between the first pressing block and the pressing mechanism, a connecting structure is provided between the third rotating disk and the second rotating disk so that the second rotating disk and the third rotating disk can rotate synchronously when the third rotating disk presses down, the pressing mechanism is vertically provided with at least two third pressing blocks that can press down the tooling fixtures to expose the processed product part for welding structure welding, and an auxiliary rotating structure is provided on one side of the first rotating disk located on the second rotating disk.

[0006] By adopting the above technical solution, when a second rotary disk is provided at the bottom of the tooling fixture, the product can rotate during processing. At the same time, a stroke cavity is formed between the tooling fixture and the second rotary disk, and a reset device is installed in the stroke cavity. A third rotary disk is provided between the first pressure block and the pressing mechanism to give the first pressure block a rotation function. When the first pressure block is pressed down to the tooling fixture by the pressing mechanism, since the third rotary disk is connected to the second rotary disk through a connecting structure, and the setting of the third pressure block can expose the processed product part, the welding mechanism can directly complete the welding processing of the door handle during the die casting process through the synchronous rotation of the third rotary disk and the second rotary disk, which greatly saves the time of the original die casting and welding and improves the processing efficiency.

[0007] The pressing device of the aforementioned door handle laser welding machine can be further configured as follows: the tooling fixture includes a clamping plate disposed on the upper end of the second rotating disk, a second pressing block is provided on the top of the second rotating disk, a clamping hole is opened in the center of the clamping plate, the second pressing block is placed in the clamping hole, and the clamping hole and the second pressing block form a die-casting groove for placing the product for die casting.

[0008] By adopting the above technical solution, a clamping plate is set on the upper end of the second rotating disk, and a clamping hole is opened in the center of the clamping plate, which together with the second pressure block forms a die-casting groove. This provides a stable and precise positioning for product placement and die casting, ensuring the stability and consistency of the product during the die-casting process. At the same time, the tight fit between the clamping hole and the second pressure block effectively prevents the product from moving or deforming during processing, further improving product quality and welding accuracy.

[0009] The pressing device of the aforementioned door handle laser welding machine can be further configured as follows: the reset device includes a plurality of sliding rods disposed between the second rotating disk and the clamping disk, the clamping disk is provided with sliding holes for the sliding rods to pass through and move axially, a plurality of fixing rods for the reset spring to be sleeved and installed are also provided between the first rotating disk and the clamping disk, and the clamping disk is also provided with fixing holes for the fixing rods to pass through and be fixed.

[0010] By adopting the above technical solution, a sliding rod is set between the second rotating disk and the fixture disk, and a sliding hole is opened on the fixture disk, which realizes the axial movement of the fixture disk. At the same time, a return spring and a fixing rod are installed between the first rotating disk and the fixture disk. When the product is processed, the fixture disk is reset by the return spring installed on the fixing rod.

[0011] The pressing device of the aforementioned door handle laser welding machine can be further configured as follows: the connecting structure includes a fixed shaft disposed on a second rotating disk, the clamping disk is provided with a through hole for the fixed shaft to pass through, the third rotating disk is provided with a locking shaft facing the clamping disk, and the locking shaft is provided with an insertion hole at its center for the fixed shaft to be inserted.

[0012] By adopting the above technical solution, a stable connection between the second rotating disk and the fixture disk is achieved by setting a fixed shaft on the second rotating disk and opening a through hole on the fixture disk. At the same time, the locking shaft on the third rotating disk is inserted and matched with the fixed shaft, ensuring that the second and third rotating disks can rotate synchronously when the third rotating disk is pressed down, thereby improving the stability and accuracy of the welding process.

[0013] The aforementioned pressing device of a laser welding machine for door handles can be further configured as follows: the pressing mechanism includes a driving cylinder; the die-casting frame includes a connecting rod connected to a lower mounting plate and perpendicularly disposed on the lower mounting plate; an upper mounting plate is mounted on the other end of the connecting rod; the driving cylinder is mounted on the top of the upper mounting plate; a pressure rod is penetratingly disposed around the driving cylinder on the upper mounting plate; the pressure rod includes a mounting shaft penetrating the mounting plate and a push rod axially movable within the mounting shaft; a pressure plate for mounting a third rotating disk is mounted on one end of the push rod at the bottom of the upper mounting plate; the third pressure block is mounted on both sides of the pressure plate; and a first driving motor for driving the third rotating disk is mounted on one side of the die-casting frame.

[0014] By adopting the above technical solution, precise control of the third rotating disk is achieved through the coordinated work of the drive cylinder, connecting rod, upper mounting plate, and pressure rod. The drive cylinder is installed on the top of the upper mounting plate and transmits power to the pressure plate through the pressure rod, thereby pushing the third rotating disk and the first pressure block installed on the third rotating disk to die-cast the product in the fixture disk while rotating it. The first drive motor installed on one side of the die-casting frame provides driving force for the third rotating disk. The first drive motor drives the second and third rotating disks to rotate simultaneously for welding.

[0015] The pressing device of the aforementioned door handle laser welding machine can be further configured as follows: the auxiliary rotating structure includes a fixed frame disposed on one side of the second rotating disk, and a roller frame is axially disposed on one end of the fixed frame facing the second rotating disk. The roller frame is provided with a horizontally rotating first roller, and the first roller abuts against the second rotating disk.

[0016] By adopting the above technical solution, a fixed frame and a roller frame are set on one side of the second rotating disk, and a horizontally rotating first roller is provided, which realizes precise auxiliary control of the second rotating disk. The first roller is in close contact with the second rotating disk, ensuring stability and accuracy during the rotation process.

[0017] The aforementioned pressing device of a door handle laser welding machine can be further configured as follows: the rotating base includes a base rotatably connected to a second drive motor and a first rotating disk; a first rotating shaft is provided on one side of the base; a second rotating shaft is provided on the same side of the second drive motor facing the first rotating shaft; a fixed plate is provided on the same side of the second drive motor and the second rotating shaft; the first rotating shaft and the second rotating shaft penetrate the fixed plate; a first synchronous roller and a second synchronous roller are respectively sleeved on the other side of the fixed plate; the first synchronous roller and the second synchronous roller are connected by a synchronous belt.

[0018] Using the above technical solution, the second drive motor drives the second rotating shaft to rotate, which in turn drives the synchronous belt and the first synchronous roller to rotate, ultimately achieving the smooth rotation of the first rotating disk. Through the coordinated work of the second drive motor and the synchronous belt, the drive of the first rotating disk is realized.

[0019] The pressing device of the aforementioned door handle laser welding machine can be further configured such that: the bottom of the third pressing block is provided with a roller groove for the vertical installation of the second roller.

[0020] The above technical solution, with rollers at the bottom of the third pressure block, improves the ease of operation and flexibility of the equipment. During the die casting process, the rollers can reduce the friction between the third pressure block and the workpiece, making the downward pressure more evenly distributed, thereby improving the processing accuracy and product quality.

[0021] The beneficial effects of this utility model are as follows: When the first pressing block is pressed down to the tooling fixture by the pressing mechanism, the third rotating disk and the second rotating disk are connected by a connecting structure. At the same time, the setting of the third pressing block can expose the processed product part, which enables the welding mechanism to directly complete the welding processing of the door handle by the synchronous rotation of the third rotating disk and the second rotating disk during the die casting process, which greatly improves the work efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of the tooling fixture structure of this utility model;

[0024] Figure 3 This is a structural diagram of the pressing mechanism of this utility model;

[0025] Figure 4 This is a structural diagram of the locking shaft of this utility model;

[0026] Figure 5 This is a diagram of the auxiliary rotation structure of this utility model;

[0027] Figure 6 This is a structural diagram of the rotating base of this utility model;

[0028] Label annotations: 1-Rotating base, 2-First rotating disk, 3-Tooling fixture, 4-Die casting frame, 5-Pressing mechanism, 6-First pressure block, 7-Second rotating disk, 8-Stroke cavity, 9-Third rotating disk, 10-Third pressure block, 11-Clamping disk, 12-Second pressure block, 13-Clamping hole, 14-Die casting groove, 15-Sliding rod, 16-Sliding hole, 17-Fixing rod, 18-Return spring, 19-Fixing hole, 20-Fixing shaft, 21-Through hole, 22-Locking shaft, 23-Insertion 24-Drive cylinder, 25-Lower mounting plate, 26-Connecting rod, 27-Upper mounting plate, 28-Pressure rod, 29-Mounting shaft, 30-Push rod, 31-Pressure plate, 32-First drive motor, 33-Fixed frame, 34-Roller frame, 35-First roller, 36-Second drive motor, 37-Base, 38-First rotating shaft, 39-Second rotating shaft, 40-Fixed plate, 41-First synchronous roller, 42-Second synchronous roller, 43-Roller groove, 44-Second roller. Detailed Implementation

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0030] like Figure 1-4The present invention provides the following technical solution: a pressing device for a door handle laser welding machine, comprising a rotating base 1 and a first rotating disk 2 disposed on the upper end of the rotating base 1. A plurality of tooling fixtures 3 are mounted above the first rotating disk 2. A die-casting frame 4 for mounting a pressing mechanism 5 is provided on one side of the rotating base 1. A first pressing block 6, which cooperates with the tooling fixtures 3 for die-casting, is provided at the bottom of the pressing mechanism 5. A second rotating disk 7 is provided between the tooling fixtures 3 and the first rotating disk 2. A travel cavity 8 for mounting a reset device is formed between the tooling fixtures 3 and the second rotating disk 7. The tooling fixtures 3 can be reset via the reset device on the second rotating disk. The upper part of the disc 7 moves axially. A third rotating disc 9 is provided between the first pressing block 6 and the pressing mechanism 5. A connecting structure is provided between the third rotating disc 9 and the second rotating disc 7, which allows the second rotating disc 7 and the third rotating disc 9 to rotate synchronously when the third rotating disc 9 presses down. The pressing mechanism 5 is vertically provided with at least two third pressing blocks 10 that can press down the tooling fixture 3 to expose the processed product part for welding structure welding. The first rotating disc is located on one side of the second rotating disc and is provided with an auxiliary rotation structure. When the second rotating disc 7 is provided at the bottom of the tooling fixture 3, the product can rotate during processing. At the same time, the tooling fixture 3 and the second rotating disc A stroke cavity 8 is formed between the first pressure block 6 and the pressing mechanism 5. A reset device is installed in the stroke cavity 8. A third turntable is provided between the first pressure block 6 and the pressing mechanism 5 to give the first pressure block 6 a rotation function. When the first pressure block 6 is pressed down to the tooling fixture 3 by the pressing mechanism 5, the third turntable 9 and the second turntable 7 are connected by a connecting structure. At the same time, the setting of the third pressure block 10 can expose the processed product part, so that the welding mechanism can directly complete the welding of the door handle during the die casting process through the synchronous rotation of the third turntable 9 and the second turntable 7. This greatly saves the time originally required for die casting and welding, and improves efficiency. To improve processing efficiency, the tooling fixture 3 includes a fixture plate 11 located on the upper end of the second rotating disk 7. A second pressure block 12 is provided on the top of the second rotating disk 7. A fixture hole 13 is opened in the center of the fixture plate 11. The second pressure block 12 is placed in the fixture hole 13. The fixture hole 13 and the second pressure block 12 form a die-casting groove 14 for placing the product for die casting. By setting the fixture plate 11 on the upper end of the second rotating disk 7 and opening the fixture hole 13 in the center of the fixture plate 11, which together with the second pressure block 12 forms a die-casting groove 14, a stable and precise positioning is provided for product placement and die casting, and the stability and consistency of the product during the die casting process are also ensured.Meanwhile, the tight fit between the clamping hole 13 and the second pressure block 12 effectively prevents the product from moving or deforming during processing, further improving product quality and welding precision. The reset device includes several sliding rods 15 disposed between the second rotating disk 7 and the clamping disk 11. The clamping disk 11 is provided with sliding holes 16 for the sliding rods 15 to pass through and move axially. Several fixing rods 17 for the reset springs 18 to be sleeved and installed are also provided between the first rotating disk 2 and the clamping disk 11. The clamping disk 11 is also provided with fixing holes 19 for the fixing rods 17 to pass through and be fixed. By setting the sliding rods 15 between the second rotating disk 7 and the clamping disk 11 and opening the sliding holes 16 on the clamping disk 11, the clamping disk 11 is reset. The axial movement of the first rotating disk 2 and the clamping disk 11 is achieved by a return spring 18 and a fixing rod 17. When the product processing is completed, the clamping disk 11 is reset by the return spring 18 installed on the fixing rod 17. The connection structure includes a fixing shaft 20 set on the second rotating disk 7, a through hole 21 for the fixing shaft 20 to pass through on the clamping disk 11, and a locking shaft 22 set on the third rotating disk 9 facing the clamping disk 11. The locking shaft 22 has an insertion hole 23 in the center for the fixing shaft 20 to be inserted. By setting the fixing shaft 20 on the second rotating disk 7 and opening the through hole 21 on the clamping disk 11, a stable connection between the second rotating disk 7 and the clamping disk 11 is achieved. At the same time, the locking shaft 22 on the third rotating disk 9 is inserted and engaged with the fixing shaft 20 to ensure that the second rotating disk 7 and the third rotating disk 9 can rotate synchronously when the third rotating disk 9 is pressed down, thereby improving the stability and accuracy of the welding process.

[0031] like Figure 2-6The present invention provides the following technical solution: a pressing device for a door handle laser welding machine. The pressing mechanism 5 includes a driving cylinder 24. The die-casting frame 4 includes a connecting rod 26 perpendicularly arranged to the lower mounting plate 25 and a lower mounting plate 27. The other end of the connecting rod 26 is mounted on an upper mounting plate 27. The driving cylinder 24 is mounted on the top of the upper mounting plate 27. A pressure rod 28 is provided penetratingly around the driving cylinder 24 on the upper mounting plate 27. The pressure rod 28 includes a mounting shaft 29 penetrating the mounting plate and a push rod 30 axially moving within the mounting shaft 29. A pressure plate 31 for mounting a third rotating disk 9 is mounted on one end of the push rod 30 at the bottom of the upper mounting plate 27. A third pressure block 10 is mounted on both sides of the pressure plate 31. A drive third rotating disk is mounted on one side of the die-casting frame 4. The first drive motor 32 of the die-casting frame 9, through the coordinated operation of the drive cylinder 24, connecting rod 26, upper mounting plate 27, and pressure rod 28, achieves precise control of the third rotating disk 9. The drive cylinder 24 is mounted on the top of the upper mounting plate 27 and transmits power to the pressure plate 31 through the pressure rod 28, thereby pushing the third rotating disk 9 and the first pressure block 6 mounted on the third rotating disk 9 to die-cast the product in the fixture disk 11 while rotating it. The first drive motor 32 mounted on one side of the die-casting frame 4 provides driving force to the third rotating disk 9. The first drive motor 32 drives the second rotating disk 7 and the third rotating disk 9 to rotate simultaneously for welding. The auxiliary rotation structure includes a fixed frame 33 set on one side of the second rotating disk 7, with the fixed frame 33 facing the second rotating disk 7. A roller frame 34 is axially arranged, and the roller frame 34 is equipped with a horizontally rotating first roller 35. The first roller 35 abuts against the second rotating disk. By setting a fixed frame 33 and a roller frame 34 on one side of the second rotating disk 7, and equipping it with the horizontally rotating first roller 35, precise auxiliary control of the second rotating disk 7 is achieved. The first roller 35 abuts tightly against the second rotating disk 7, ensuring stability and accuracy during rotation. The rotating base 1 includes a second drive motor 36 and a base 37 rotatably connected to the first rotating disk 2. A first rotating shaft 38 is provided on one side of the base 37. A second rotating shaft 39 is provided on the same side of the second drive motor 36 facing the first rotating shaft 38. A fixed plate 40 is provided on the same side of the second drive motor 36 and the second rotating shaft 39. Shaft 38 and second rotating shaft 39 are inserted through and mounted on fixed plate 40. First synchronous roller 41 and second synchronous roller 42 are respectively fitted onto the other side of fixed plate 40 on first rotating shaft 38 and second rotating shaft 39. First synchronous roller 41 and second synchronous roller 42 are connected by a synchronous belt. Second drive motor 36 drives second rotating shaft 39 to rotate, thereby driving synchronous belt and first synchronous roller 41 to rotate, ultimately achieving smooth rotation of first rotating disk 2. Through the coordinated work of second drive motor 36 and synchronous belt, the first rotating disk 2 is driven. Third pressure block 10 has a roller groove 43 at its bottom for vertical mounting of second roller 44. The rollers at the bottom of third pressure block 10 improve the ease of operation and flexibility of the equipment during the die-casting process.The rollers reduce friction between the third pressure block 10 and the workpiece, resulting in a more even distribution of downward pressure, thereby improving machining accuracy and product quality.

[0032] The beneficial effects of this utility model are as follows: When the first pressing block 6 is pressed down to the tooling fixture 3 by the pressing mechanism 5, the third rotating disk 9 and the second rotating disk 7 are connected by a connecting structure. At the same time, the setting of the third pressing block 10 can expose the processed product part, which enables the welding mechanism to directly complete the welding of the door handle during the die casting process through the synchronous rotation of the third rotating disk 9 and the second rotating disk 7, which greatly improves the work efficiency.

Claims

1. A pressing device for a door handle laser welding machine, comprising a rotating base and a first rotating disk disposed on the upper end of the rotating base, wherein a plurality of tooling fixtures are mounted above the first rotating disk, a die-casting frame for mounting a pressing mechanism is provided on one side of the rotating base, and a first pressing block for die-casting in cooperation with the tooling fixtures is provided at the bottom of the pressing mechanism, characterized in that: A second rotating disk is provided between the tooling fixture and the first rotating disk, and a travel cavity for installing a reset device is formed between the tooling fixture and the second rotating disk. The tooling fixture can move axially above the second rotating disk through the reset device. A third rotating disk is provided between the first pressure block and the pressing mechanism. A connecting structure is provided between the third rotating disk and the second rotating disk, which allows the second and third rotating disks to rotate synchronously when the third rotating disk presses down. The pressing mechanism is vertically provided with at least two third pressure blocks that can press down the tooling fixture to expose the processed product part for welding structure welding. An auxiliary rotating structure is provided on the side of the first rotating disk located on the second rotating disk.

2. The pressing device of a door handle laser welding machine according to claim 1, characterized in that: The tooling fixture includes a fixture plate disposed on the upper end of the second rotating disk, a second pressure block disposed on the top of the second rotating disk, a fixture hole disposed in the center of the fixture plate, the second pressure block being placed in the fixture hole, and the fixture hole and the second pressure block forming a die-casting groove for placing the product for die casting.

3. The pressing device of a door handle laser welding machine according to claim 1, characterized in that: The reset device includes a plurality of sliding rods disposed between the second rotating disk and the clamping disk. The clamping disk is provided with sliding holes for the sliding rods to pass through and move axially. A plurality of fixing rods for the reset spring to be sleeved and installed are also provided between the first rotating disk and the clamping disk. The clamping disk is also provided with fixing holes for the fixing rods to pass through and be fixed.

4. The pressing device of a door handle laser welding machine according to claim 2, characterized in that: The connection structure includes a fixed shaft disposed on a second rotating disk, a through hole for the fixed shaft to pass through on the clamping disk, and a locking shaft disposed on the third rotating disk facing the clamping disk, the locking shaft having an insertion hole at its center for the fixed shaft to be inserted into.

5. The pressing device of a door handle laser welding machine according to claim 1, characterized in that: The pressing mechanism includes a drive cylinder. The die-casting frame includes a lower mounting plate and a connecting rod perpendicularly disposed on the lower mounting plate. An upper mounting plate is mounted on the other end of the connecting rod. The drive cylinder is mounted on the top of the upper mounting plate. A pressure rod is provided penetratingly around the drive cylinder on the upper mounting plate. The pressure rod includes a mounting shaft penetrating the mounting plate and a push rod that moves axially within the mounting shaft. A pressure plate for mounting a third rotating disk is mounted on one end of the push rod at the bottom of the upper mounting plate. The third pressure block is mounted on both sides of the pressure plate. A first drive motor for driving the third rotating disk is mounted on one side of the die-casting frame.

6. The pressing device of a door handle laser welding machine according to claim 1, characterized in that: The auxiliary rotation structure includes a fixed frame disposed on one side of the second rotating disk. A roller frame is axially disposed on one end of the fixed frame facing the second rotating disk. The roller frame is provided with a first roller that rotates horizontally, and the first roller abuts against the second rotating disk.

7. The pressing device of a door handle laser welding machine according to any one of claims 1-6, characterized in that: The rotating base includes a base rotatably connected to a second drive motor and a first rotating disk. A first rotating shaft is provided on one side of the base, and a second rotating shaft is provided on the same side of the second drive motor facing the first rotating shaft. A fixed plate is provided on the same side of the second drive motor and the second rotating shaft. The first rotating shaft and the second rotating shaft are penetrated through the fixed plate. A first synchronous roller and a second synchronous roller are respectively sleeved on the other side of the fixed plate. The first synchronous roller and the second synchronous roller are connected by a synchronous belt.

8. The pressing device of a door handle laser welding machine according to claim 7, characterized in that: The bottom of the third pressure block has a roller groove for the vertical installation of the second roller.

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