Die wear-resistant block chamfering device capable of automatically adjusting polishing
By designing an automatically adjusted mold wear-resistant block chamfering device, the automatic chamfering of the two sides of the wear-resistant block is achieved by using the cooperation of the polishing components and the moving components, the problem of inefficiency in the prior art is solved, the work efficiency is improved and manual operation is reduced.
Patent Information
- Application Number
- CN202422274726.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-18
AI Technical Summary
Common mold wear-resistant block chamfering devices cannot chamfer the two corners of the wear-resistant block at once, and require staff to clamp and adjust the position twice, resulting in inefficiency and increased workload.
A mold wear-resistant block chamfer device that can automatically adjust and polish is designed. Through the cooperation of the grinding component, left-right moving component and front-rear moving component, the simultaneous chamfer of the two corners of the wear-resistant block is achieved, and the position of the adjustment component is automatically adjusted to avoid secondary clamping.
The chamfer efficiency is improved, the workload of staff is reduced, and the automated chamfering of the two sides of the wear-resistant block is realized, which improves the working efficiency and device flexibility.
Smart Images

Figure CN223186208U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chamfering of wear-resistant blocks, in particular to a chamfering device for a mold wear-resistant block which can automatically adjust and grind. Background Art
[0002] Wear-resistant blocks are often set in the part of the mold product that contacts the outside world, replacing the main material part of the mold to rub against the ground or other structures, thereby ensuring the integrity of the main material and function. Wear-resistant blocks need to be chamfered, ground, polished, etc.
[0003] The common mold wear-resistant block chamfering device has low efficiency when chamfering the wear-resistant block. It is impossible to chamfer two corners of the wear-resistant block at one time. After completing the chamfering work on one side of the wear-resistant block, the staff needs to clamp the wear-resistant block for the second time to adjust the position of the wear-resistant block and chamfer the two corners on the other side of the wear-resistant block. This process not only reduces work efficiency, but also increases the workload of the staff.
[0004] Therefore, for the above-mentioned mold wear-resistant block chamfering device, it is impossible to chamfer two corners of the wear-resistant block at one time. After completing the chamfering work on one side of the wear-resistant block, the staff needs to adjust the position of the wear-resistant block and chamfer the two corners on the other side of the wear-resistant block. This process not only reduces work efficiency, but also increases the workload of the staff. It urgently needs to be solved to improve the use scenario of the mold wear-resistant block chamfering device. Utility Model Content
[0005] In order to overcome the common mold wear-resistant block chamfering device, it is impossible to chamfer two corners of the wear-resistant block at one time, and after completing the chamfering work on one side of the wear-resistant block, the wear-resistant block needs to be clamped a second time to chamfer the two corners on the other side of the wear-resistant block, which not only reduces work efficiency but also increases workload.
[0006] The technical solution of the utility model is: a chamfering device for a mold wear-resistant block that can automatically adjust and grind, comprising a base, an adjusting component is provided at the upper end of the base, a clamping component is provided at the upper end of the adjusting component, a left and right moving component is provided at the upper end of the base, the left and right moving component is connected to a front and back moving component, the front and back moving component is connected to a grinding component, the adjusting component comprises a motor 1, a rotating disk and an electric push rod, the clamping component comprises a placing plate, a support plate, a top plate, a screw, a wrench, a lower pressure plate and a wear-resistant block body, the left and right moving component comprises an electric slide rail, a sliding block and a moving plate, the front and back moving component comprises a mounting frame 1, a motor 2, a ball screw, a moving block 1, a slide rod 1, a support and a fixed plate, and the grinding component comprises a mounting frame 2, a motor 3, a bidirectional screw, a moving block 2, a slide rod 2, a mounting frame, a drive motor and a grinding roller.
[0007] Preferably, the grinding assembly, the left-right moving assembly and the front-back moving assembly cooperate with each other, so that the grinding assembly can chamfer two corners of the wear-resistant block at one time, so as to solve the problem that the common mold wear-resistant block chamfering device is inefficient when chamfering the wear-resistant block and cannot chamfer two corners of the wear-resistant block at one time. After the chamfering work on one side of the wear-resistant block is completed by adjusting the assembly, the position of the clamped wear-resistant block can be adjusted to facilitate the chamfering of the two corners on the other side of the wear-resistant block. This process improves work efficiency and reduces the workload of the staff.
[0008] Preferably, four supporting legs are fixedly provided on the lower end face of the base, a motor 1 is fixedly provided on the upper end face of the base, a rotating disk is fixedly provided on the output end of the motor 1, an electric push rod is installed on the upper end face of the rotating disk, and a placement plate is fixedly provided on the output end of the electric push rod. Starting the motor 1 can drive the rotating disk to rotate, and the mechanism fixedly connected to the rotating disk will also rotate accordingly, thereby driving the wear-resistant block body to rotate, facilitating subsequent processing. Starting the motor 1 can adjust the height of the upper clamping assembly, and during loading and unloading work, it can adapt to people of different heights to carry out loading and unloading work, thereby improving the comfort of the device.
[0009] Preferably, two supporting plates are fixedly provided on the upper end surface of the placing plate, and a top plate is fixedly provided on the upper end surfaces of the two supporting plates. Screw holes are provided on the upper end surfaces of the top plates, and the top plates are threadedly connected to the screw rods through the screw holes. A wrench is fixedly provided on the upper end surface of the screw rod, and a lower pressure plate is connected to the bearing structure of the lower end surface of the screw rod. A wear-resistant block body is placed above the placing plate, and the wear-resistant block body is placed on the placing plate. Turning the wrench will drive the screw rod to rotate, so that the screw rod moves toward the wear-resistant block body, thereby driving the lower pressure plate to fix the wear-resistant block body, and a rubber pad is provided on the contact surface between the lower pressure plate and the wear-resistant block body, and the rubber pad reduces the clamping mark left by the lower pressure plate on the surface of the wear-resistant block body.
[0010] Preferably, two electric slide rails are fixedly provided on the upper end surface of the base, and sliding blocks are slidably connected to the upper surfaces of the electric slide rails. Moving plates are fixedly provided on the upper end surfaces of the two sliding blocks. When the electric slide rails are started, the sliding blocks move along the electric slide rails, and the sliding blocks drive the moving plates to move, and the mechanism fixedly connected to the moving plates will also move accordingly, thereby driving the chamfering mechanism to move left and right, thereby improving the flexibility of the device.
[0011] Preferably, a mounting frame 1 is fixedly provided on the inner side of the movable plate, a motor 2 is fixedly provided on the front surface of the mounting frame 1, an output end of the motor 2 is fixedly connected to a ball screw, an outer thread of the ball screw is connected to a moving block 1, a slide rod 1 is fixedly provided on the inner surface of the mounting frame 1, and the outer side of the slide rod 1 is slidably connected to the moving block 1. Starting the motor 2 can drive the ball screw to rotate, so that the moving block 1 moves along the ball screw, and the setting of the slide rod 1 makes the moving block 1 have good moving stability when moving, and the mechanism fixedly connected to the moving block 1 will also move accordingly, thereby driving the chamfering mechanism to move left and right, further improving the flexibility of the device.
[0012] Preferably, a support is fixedly provided on the inner side of the moving block 1, a fixed plate is fixedly provided on the inner side of the support, a mounting frame 2 is fixedly provided on the inner surface of the fixed plate, a motor 3 is fixedly provided on the front surface of the mounting frame 2, an output end of the motor 3 is fixedly connected to a bidirectional screw rod, two sides of the bidirectional screw rod are respectively connected to a moving block 2, two inner side surfaces of the mounting frame 2 are fixedly provided with a slide rod 2, and starting the motor 3 can drive the bidirectional screw rod to rotate, and when the bidirectional screw rod rotates, the two moving blocks 2 will move inward or outward along the bidirectional screw rod at the same time, and the two moving blocks 2 will respectively drive the mechanism to which they are connected to move.
[0013] Preferably, the outer side of the slide rod 2 is slidably connected to two moving blocks 2, the inner surface of the moving block 2 is fixedly provided with a mounting frame, the upper end face of the mounting frame is fixedly provided with a driving motor, the output end of the driving motor passes through the upper end face of the mounting frame and is fixedly connected to a grinding roller, and the driving motor is started to drive the grinding roller to work, and the two grinding rollers can chamfer the two corners of the wear-resistant block respectively, which greatly improves the work efficiency. In conjunction with the adjustment component, the wear-resistant block body can be rotated one hundred and eighty degrees to chamfer the two corners on the other side of the wear-resistant block body, and no secondary clamping and position adjustment is required.
[0014] Beneficial effects of the utility model:
[0015] 1. Through the cooperation of the grinding assembly, the left and right moving assembly and the front and back moving assembly, the grinding assembly can chamfer the two corners of the wear-resistant block at one time, so as to solve the problem that the common mold wear-resistant block chamfering device is low in efficiency when chamfering the wear-resistant block and cannot chamfer the two corners of the wear-resistant block at one time. By adjusting the assembly, after the chamfering work on one side of the wear-resistant block is completed, the position of the clamped wear-resistant block can be adjusted to facilitate the chamfering work on the two corners on the other side of the wear-resistant block. This process improves work efficiency and reduces the workload of the staff;
[0016] 2. Start the driving motor to drive the grinding roller to work, and then start the second motor and the electric slide to drive the grinding roller to move. Through cooperation, the two grinding rollers can chamfer the two corners of the wear-resistant block respectively, which greatly improves the work efficiency. With the adjustment component, the wear-resistant block body can be rotated 180 degrees to chamfer the two corners on the other side of the wear-resistant block body, and no secondary clamping and position adjustment is required. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of a chamfering device for a mold wear-resistant block capable of automatically adjusting and grinding according to the present invention;
[0018] Figure 2 Shown is a schematic diagram of the three-dimensional installation structure of the forward and backward moving components of a chamfering device for a mold wear-resistant block capable of automatically adjusting the grinding of the present utility model;
[0019] Figure 3 Shown is a schematic diagram of the installation structure of a grinding assembly of a chamfering device for a mold wear-resistant block capable of automatically adjusting grinding according to the present invention;
[0020] Figure 4 Shown is a schematic diagram of the installation structure of the clamping assembly of the chamfering device of the mold wear-resistant block that can automatically adjust the grinding of the utility model.
[0021] In the figure: 1. Base; 2. Support leg; 3. Adjustment assembly; 4. Clamping assembly; 5. Left and right moving assembly; 6. Forward and backward moving assembly; 7. Grinding assembly; 31. Motor 1; 32. Rotating disk; 33. Electric push rod; 41. Placement plate; 42. Support plate; 43. Top plate; 44. Screw; 45. Twist handle; 46. Lower pressure plate; 47. Wear-resistant block body; 51. Electric slide rail; 52. Sliding block; 53. Moving plate; 61. Mounting frame 1; 62. Motor 2; 63. Ball screw; 64. Moving block 1; 65. Slide rod 1; 66. Support member; 67. Fixed plate; 71. Mounting frame 2; 72. Motor 3; 73. Bidirectional screw; 74. Moving block 2; 75. Slide rod 2; 76. Mounting frame; 77. Drive motor; 78. Grinding roller. DETAILED DESCRIPTION
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] See also Figure 1-4The utility model provides an embodiment: a chamfering device for a wear-resistant block of a mold that can automatically adjust and grind, comprising a base 1, an adjusting component 3 is provided on the upper end of the base 1, a clamping component 4 is provided on the upper end of the adjusting component 3, a left-right moving component 5 is provided on the upper end of the base 1, a front-back moving component 6 is connected to the left-right moving component 5, and a grinding component 7 is connected to the front-back moving component 6. The adjusting component 3 includes a motor 31, a rotating disk 32 and an electric push rod 33, and the clamping component 4 includes a placement plate 41 and a support plate 42. , top plate 43, screw 44, handle 45, lower pressure plate 46 and wear-resistant block body 47, the left and right moving assembly 5 includes an electric slide rail 51, a sliding block 52 and a moving plate 53, the front and rear moving assembly 6 includes an installation frame 1 61, a motor 2 62, a ball screw 63, a moving block 1 64, a slide rod 1 65, a support 66 and a fixed plate 67, and the grinding assembly 7 includes an installation frame 2 71, a motor 3 72, a bidirectional screw 73, a moving block 2 74, a slide rod 2 75, a mounting frame 76, a drive motor 77 and a grinding roller 78.
[0024] See also Figure 1 、 Figure 2 and Figure 4 In this embodiment, four supporting legs 2 are fixedly provided on the lower end surface of the base 1, and a motor 31 is fixedly provided on the upper end surface of the base 1. A rotating disk 32 is fixedly provided on the output end of the motor 31, and an electric push rod 33 is installed on the upper end surface of the rotating disk 32. The output end of the electric push rod 33 is fixedly provided with a placement plate 41. Starting the motor 31 can drive the rotating disk 32 to rotate, and the mechanism fixedly connected to the rotating disk 32 will also rotate accordingly, thereby driving the wear-resistant block body 47 to rotate, which is convenient for subsequent processing. Starting the motor 31 can adjust the height of the upper clamping assembly 4. When loading and unloading, it can adapt to people of different heights to carry out loading and unloading work, thereby improving the comfort of the device. The upper end surface of the placement plate 41 is fixedly provided with Two support plates 42, the upper end surfaces of the two support plates 42 are fixedly provided with a top plate 43, the upper end surface of the top plate 43 is provided with a screw hole, the top plate 43 is threadedly connected to the screw 44 through the screw hole, the upper end surface of the screw 44 is fixedly provided with a screw handle 45, the lower end surface bearing structure of the screw 44 is connected with a lower pressure plate 46, and a wear-resistant block body 47 is placed above the placement plate 41. The wear-resistant block body 47 is placed on the placement plate 41, and the screw handle 45 is rotated to drive the screw 44 to rotate, so that the screw 44 moves toward the wear-resistant block body 47, thereby driving the lower pressure plate 46 to fix the wear-resistant block body 47, and the contact surface between the lower pressure plate 46 and the wear-resistant block body 47 is provided with a rubber pad, which reduces the clamping mark left by the lower pressure plate 46 on the surface of the wear-resistant block body 47.
[0025] See also Figure 1-4In this embodiment, two electric slide rails 51 are fixedly provided on the upper end surface of the base 1. Sliding blocks 52 are slidably connected to the upper surfaces of the electric slide rails 51. Moving plates 53 are fixedly provided on the upper end surfaces of the two sliding blocks 52. When the electric slide rails 51 are started, the sliding blocks 52 move along the electric slide rails 51. The sliding blocks 52 drive the moving plates 53 to move, and the mechanism fixedly connected to the moving plates 53 will also move accordingly, thereby driving the chamfering mechanism to move left and right, thereby improving the flexibility of the device. A mounting frame 1 61 is fixedly provided on the inner side of the moving plate 53. A motor 2 62 is fixedly provided on the front surface of the mounting frame 1 61. The output of the motor 2 62 The end is fixedly connected with a ball screw 63, and the outer side of the ball screw 63 is threadedly connected to a moving block 1 64. A slide rod 1 65 is fixedly installed on the inner surface of the mounting frame 1 61, and the outer side of the slide rod 1 65 is slidably connected to the moving block 1 64. Starting the motor 2 62 can drive the ball screw 63 to rotate, so that the moving block 1 64 moves along the ball screw 63. The setting of the slide rod 1 65 makes the moving block 1 64 have good moving stability when moving, and the mechanism fixedly connected to the moving block 1 64 will also move accordingly, thereby driving the chamfering mechanism to move left and right, further improving the flexibility of the device. A support is fixedly provided on the inner side of the moving block 1 64 Part 66, a fixing plate 67 is fixedly provided on the inner side of the support part 66, and a mounting frame 2 71 is fixedly provided on the inner surface of the fixing plate 67. A motor 3 72 is fixedly provided on the front surface of the mounting frame 2 71. The output end of the motor 3 72 is fixedly connected to a bidirectional screw rod 73, and both sides of the bidirectional screw rod 73 are respectively connected to a moving block 2 74. The inner two sides of the mounting frame 2 71 are fixedly provided with a sliding rod 2 75. Starting the motor 3 72 can drive the bidirectional screw rod 73 to rotate. When the bidirectional screw rod 73 rotates, the two moving blocks 2 74 will move inward or outward along the bidirectional screw rod 73 at the same time, and the two moving blocks 2 74 will respectively drive the machines connected to them. The structure moves, and the outer side of the slide rod 2 75 is slidably connected to two moving blocks 2 74. The inner surface of the moving block 2 74 is fixedly provided with a mounting bracket 76. The upper end surface of the mounting bracket 76 is fixedly provided with a driving motor 77. The output end of the driving motor 77 passes through the upper end surface of the mounting bracket 76 and is fixedly connected to a grinding roller 78. The driving motor 77 is started to drive the grinding roller 78 to work. The two grinding rollers 78 can chamfer the two corners of the wear-resistant block respectively, which greatly improves the work efficiency. In conjunction with the adjustment component 3, the wear-resistant block main body 47 is rotated one hundred and eighty degrees to chamfer the two corners on the other side of the wear-resistant block main body 47, and there is no need for secondary clamping to adjust the position.
[0026] When working, starting motor 31 can drive rotating disk 32 to rotate, and the mechanism fixedly connected to rotating disk 32 will also rotate accordingly, thereby driving wear-resistant block body 47 to rotate, which is convenient for subsequent processing. Starting motor 31 can adjust the height of upper clamping assembly 4, which can adapt to people of different heights for loading and unloading work, improving the comfort of the device. The wear-resistant block body 47 is placed on the placing plate 41, and the screw handle 45 is turned to drive the screw 44 to rotate, so that the screw 44 moves toward the wear-resistant block body 47. The block body 47 moves, thereby driving the lower pressure plate 46 to fix the wear-resistant block body 47, and the contact surface between the lower pressure plate 46 and the wear-resistant block body 47 is provided with a rubber pad, which reduces the clamping mark left by the lower pressure plate 46 on the surface of the wear-resistant block body 47. The electric slide rail 51 is started, so that the sliding block 52 moves along the electric slide rail 51, and the sliding block 52 will drive the moving plate 53 to move, and the mechanism fixedly connected to the moving plate 53 will also move accordingly, thereby driving the chamfering mechanism to move left and right, thereby improving the flexibility of the device. 62 can drive the ball screw 63 to rotate, so that the moving block 1 64 moves along the ball screw 63, and the setting of the slide bar 1 65 makes the moving block 1 64 have good moving stability when moving, and the mechanism fixedly connected to the moving block 1 64 will also move accordingly, thereby driving the chamfering mechanism to move left and right, further improving the flexibility of the device, starting the motor 3 72 can drive the bidirectional screw 73 to rotate, and when the bidirectional screw 73 rotates, the two moving blocks 2 74 will simultaneously move inward or outward along the bidirectional screw 73 Move, and the two moving blocks 2 74 will respectively drive the mechanisms connected to them to move, and by starting the drive motor 77, the grinding roller 78 will work. When the motor 2 62 and the electric slide 51 are started, the grinding roller 78 will be driven to move. Through cooperation, the two grinding rollers 78 can chamfer the two corners of the wear-resistant block respectively, which greatly improves the work efficiency. In conjunction with the adjustment component 3, the wear-resistant block main body 47 can be rotated one hundred and eighty degrees to chamfer the two corners on the other side of the wear-resistant block main body 47, and there is no need for secondary clamping to adjust the position.
[0027] Through the above steps, the grinding component 7, the left and right moving component 5 and the front and back moving component 6 cooperate with each other, so that the grinding component 7 can chamfer two corners of the wear-resistant block at a time, so as to solve the problem that the common mold wear-resistant block chamfering device is inefficient when chamfering the wear-resistant block and cannot chamfer two corners of the wear-resistant block at a time. After the chamfering work on one side of the wear-resistant block is completed by adjusting the component 3, the position of the clamped wear-resistant block can be adjusted to facilitate the chamfering of the two corners on the other side of the wear-resistant block. This process improves work efficiency and reduces the workload of the staff.
[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.
Claims
1. A chamfering device for a wear-resistant mold block capable of automatically adjusting the grinding process, comprising a base (1), characterized in that: The upper end of the base (1) is provided with an adjusting assembly (3), the upper end of the adjusting assembly (3) is provided with a clamping assembly (4), the upper end of the base (1) is provided with a left-right moving assembly (5), the left-right moving assembly (5) is connected to a front-back moving assembly (6), the front-back moving assembly (6) is connected to a grinding assembly (7), the adjusting assembly (3) includes a motor (31), a rotating disk (32) and an electric push rod (33), the clamping assembly (4) includes a placing plate (41), a supporting plate (42), a top plate (43), a screw (44), a screw handle (45), a lower pressing plate (46) and The wear-resistant block body (47) comprises a left-right moving assembly (5) including an electric slide rail (51), a sliding block (52) and a moving plate (53); the front-back moving assembly (6) comprises a mounting frame (61), a second motor (62), a ball screw (63), a first moving block (64), a first slide bar (65), a support member (66) and a fixed plate (67); and the grinding assembly (7) comprises a second mounting frame (71), a third motor (72), a bidirectional screw (73), a second moving block (74), a second slide bar (75), a mounting frame (76), a drive motor (77) and a grinding roller (78).
2. The mold wear-resistant block chamfering device capable of automatically adjusting the grinding process according to claim 1, characterized in that: Four supporting legs (2) are fixedly provided on the lower end surface of the base (1); a motor (31) is fixedly provided on the upper end surface of the base (1); a rotating disk (32) is fixedly provided on the output end of the motor (31); an electric push rod (33) is installed on the upper end surface of the rotating disk (32); and a placement plate (41) is fixedly provided on the output end of the electric push rod (33).
3. The mold wear-resistant block chamfering device capable of automatically adjusting the grinding process according to claim 2, characterized in that: Two supporting plates (42) are fixedly provided on the upper end surface of the placement plate (41), and a top plate (43) is fixedly provided on the upper end surfaces of the two supporting plates (42). A screw hole is provided on the upper end surface of the top plate (43), and the top plate (43) is threadedly connected to the screw rod (44) through the screw hole. A screw handle (45) is fixedly provided on the upper end surface of the screw rod (44), and a lower pressure plate (46) is connected to the bearing structure of the lower end surface of the screw rod (44). A wear-resistant block body (47) is placed above the placement plate (41).
4. The device for chamfering a wear-resistant mold block capable of automatically adjusting the grinding process according to claim 2, characterized in that: Two electric slide rails (51) are fixedly provided on the upper end surface of the base (1); a sliding block (52) is slidably connected to the upper surface of the electric slide rail (51); and a moving plate (53) is fixedly provided on the upper end surfaces of the two sliding blocks (52).
5. The mold wear-resistant block chamfering device capable of automatically adjusting the grinding process according to claim 4, characterized in that: The inner side of the movable plate (53) is fixedly provided with a mounting frame (61), the front side surface of the mounting frame (61) is fixedly provided with a motor (62), the output end of the motor (62) is fixedly connected with a ball screw (63), the outer side of the ball screw (63) is threadedly connected with a movable block (64), the inner side surface of the mounting frame (61) is fixedly provided with a slide bar (65), and the outer side of the slide bar (65) is slidably connected with the movable block (64).
6. The mold wear-resistant block chamfering device capable of automatically adjusting grinding according to claim 5, characterized in that: A support member (66) is fixedly provided on the inner side of the moving block (64), a fixed plate (67) is fixedly provided on the inner side of the support member (66), a mounting frame (71) is fixedly provided on the inner surface of the fixing plate (67), a motor (72) is fixedly provided on the front side surface of the mounting frame (71), an output end of the motor (72) is fixedly connected to a bidirectional screw rod (73), and a moving block (74) is connected to both sides of the bidirectional screw rod (73), and a sliding rod (75) is fixedly provided on both sides of the inner side of the mounting frame (71).
7. The device for chamfering a wear-resistant mold block capable of automatically adjusting the grinding process according to claim 6, characterized in that: The outer side of the slide bar 2 (75) is slidably connected to two moving blocks 2 (74), the inner surface of the moving block 2 (74) is fixedly provided with a mounting frame (76), the upper end surface of the mounting frame (76) is fixedly provided with a driving motor (77), and the output end of the driving motor (77) passes through the upper end surface of the mounting frame (76) and is fixedly connected to a grinding roller (78).