A fully automatic grinding device for creping doctor blades in paper machines

Abstract

This utility model relates to the field of crease cutter processing technology, and discloses a fully automatic grinding device for crease cutters used in paper machines. It includes a base plate on which an electric grinder is mounted. A grinding head for grinding the crease cutter is fixed to the output end of the electric grinder. A movable seat slides on the base plate, with the movable seat and the electric grinder located on opposite sides of the grinding head. A slide block slides on the movable seat, and a clamping assembly for holding the crease cutter is mounted on the slide block. A conveying assembly for driving the slide block to move horizontally is mounted on the movable seat. An adjusting assembly for driving the movable seat to move closer to the grinding head is mounted on the base plate. This utility model has the following advantages and effects: it can achieve automated clamping, conveying, and grinding in one integrated unit, and is suitable for crease cutters of various sizes, which helps to improve the overall grinding efficiency and reduce the labor intensity of operators.

Description

Technical Field

[0001] This utility model relates to the field of creping blade processing technology, and in particular to a fully automatic grinding device for creping blades used in paper machines. Background Technology

[0002] The creping blade is an important component in the production of tissue paper. It is a long, strip-shaped mechanical blade with a slightly curved edge. Its function in the production process is to peel the paper from the surface of the drying cylinder while applying necessary pressure to the paper surface to form a wrinkled structure. When the creping blade is working, the intersection of the surface close to the drying cylinder and the top surface serves as the working edge. Therefore, to meet the process requirements, the creping blade should have good wear resistance, suitable sharpness, appropriate rigidity, and elasticity. Thus, modern creping blades are generally made of quenched steel as the base material, and a certain thickness of wear-resistant coating is directly sprayed onto the base material's cutting edge, thereby ensuring good wear resistance and flexibility.

[0003] Utility model patent CN214322745U discloses a constant pressure grinding device for the end face of a wrinkling tool. The device includes a base plate, a first slide block, a second slide block, an electric grinder, and a grinding head. A stop block for positioning the wrinkling tool is provided on the right side of the base plate. A sliding groove is laterally formed on the upper surface of the base plate. The first slide block is elastically and compressibly mounted laterally on the left side of the base plate, with its bottom extending into and engaging with the sliding groove. This device maintains a constant pressure applied by the grinding head to the processing end face of the wrinkling tool, achieving constant pressure grinding of the wrinkling tool's end face.

[0004] The above-mentioned device has the following shortcomings: the wrinkling cutter is installed between the stop block and the positioning wheel for grinding, which makes it inconvenient to transport the wrinkling cutter forward, thus hindering the improvement of grinding efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a fully automatic grinding device for creping blades in paper machines, which can automatically transport the creping blades for grinding operations.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a fully automatic grinding device for creping doctor blades in paper machines, comprising a base plate, an electric grinder mounted on the base plate, a grinding head for grinding the creping doctor blade fixed at the output end of the electric grinder, a movable seat slidably mounted on the base plate, the movable seat and the electric grinder being located on opposite sides of the grinding head, a slide block slidably mounted on the movable seat, a clamping assembly for holding the creping doctor blade mounted on the slide block, a conveying assembly for driving the slide block to move horizontally mounted on the movable seat, and an adjusting assembly for driving the movable seat to move closer to the grinding head mounted on the base plate.

[0007] By adopting the above technical solution, the wrinkling scraper is clamped on one side of the slide by the clamping component, the adjusting component pushes the moving seat and the wrinkling scraper closer to the grinding head, and the electric grinder drives the grinding head to rotate and grind the processing end face of the wrinkling scraper. During this process, the transport component drives the slide to move horizontally, so that the wrinkling scraper moves horizontally and the grinding head grinds the processing end face of the wrinkling scraper. This achieves automated clamping, transport and grinding in one unit, and is applicable to wrinkling scrapers of various sizes. It helps to improve the overall grinding efficiency and reduce the labor intensity of the operator.

[0008] A further feature of this invention is that: a plurality of supports are fixed on the side of the slide near the grinding head; the clamping assembly includes a fixed frame fixed to the slide; a main shaft is rotatably connected inside the fixed frame; a plurality of jaws are fixed along the axial direction on the main shaft; and a clamping motor for driving the main shaft to rotate is installed on one side of the fixed frame.

[0009] By adopting the above technical solution, the wrinkling scraper is placed on the support frame. By starting the clamping motor, the clamping motor drives the spindle to rotate, and then the spindle drives multiple jaws to rotate, clamping the wrinkling scraper between the jaws and the support frame. This avoids the wrinkling scraper from shifting during grinding and improves the stability of the grinding operation.

[0010] A further feature of this invention is that the fixing frame is provided with slots corresponding to the number of grippers, and one end of each gripper passes through the slot and is fixedly connected to the main shaft.

[0011] By adopting the above technical solutions, the stability of the overall structure has been improved.

[0012] A further feature of this invention is that the gripper is an arc-shaped gripper.

[0013] By adopting the above technical solution, the gripper can hold blades of different thicknesses within a certain range, thus suppressing the micro-movement of the wrinkling scraper.

[0014] A further feature of this invention is that an anti-wear sleeve is fixed to the end of the gripper away from the main shaft.

[0015] By adopting the above technical solution, the blade surface wear caused by direct contact between the end of the gripper and the wrinkling scraper can be avoided.

[0016] A further feature of this invention is that the conveying assembly includes a drive groove disposed on the movable seat, a drive screw is rotatably connected in the drive groove, the bottom of the slide is threadedly connected to the drive screw and slides in the drive groove, and a drive motor for driving the drive screw to rotate is fixedly installed on one side of the movable seat.

[0017] By adopting the above technical solution, the drive motor is started, which drives the drive screw to rotate. The drive screw then drives the slide block to slide along the drive groove, so that the wrinkling scraper moves in the horizontal direction. This allows the grinding head to fully grind the processing end face of the wrinkling scraper. The overall operation process reduces manual operation and lowers safety hazards.

[0018] A further feature of this invention is that the adjusting assembly includes an adjusting cylinder fixedly installed on the base plate, the adjusting cylinder and the grinding head are respectively located on both sides of the movable seat, and the output end of the adjusting cylinder is fixedly connected to the movable seat.

[0019] By adopting the above technical solution, after the wrinkling scraper is clamped onto the support frame by the clamping assembly, the adjusting cylinder is activated. The output end of the adjusting cylinder extends and pushes the moving seat and the wrinkling scraper closer to the grinding head until the processing end face of the wrinkling scraper is in contact with the grinding head for grinding. This adjusting assembly enables the grinding head to grind wrinkling scrapers of different widths, improving the overall applicability.

[0020] A further feature of this invention is that the base plate is fixed with baffles located on both sides of the movable seat and in contact with the outer walls of both sides of the movable seat.

[0021] By adopting the above technical solution, the stop bar limits the movement of the moving seat, thereby improving the overall operational stability.

[0022] The beneficial effects of this utility model are:

[0023] 1. The drive motor drives the drive screw to rotate, which in turn drives the slide block to slide along the drive groove, so that the wrinkling scraper moves in the horizontal direction, and the grinding head can fully grind the processing end face of the wrinkling scraper. The overall operation process reduces manual operation and lowers safety hazards.

[0024] 2. The clamping motor drives the spindle to rotate, which in turn drives multiple jaws to rotate, clamping the wrinkling scraper between the jaws and the support frame, thus preventing the wrinkling scraper from shifting during grinding and improving the stability of the grinding operation.

[0025] 3. Adjust the cylinder output end to extend and push the moving seat and wrinkling scraper closer to the grinding head until the processing end face of the wrinkling scraper is in contact with the grinding head for grinding. This adjustment component enables the grinding head to grind wrinkling scrapers of different widths, improving the overall applicability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model.

[0028] Figure 2 This is a schematic diagram showing the connection relationship between the support frame and the slide block in this utility model.

[0029] Figure 3 This is a schematic diagram of the connection relationship between the gripper and the spindle in this utility model.

[0030] In the diagram, 1. Base plate; 2. Electric grinder; 3. Grinding head; 4. Moving seat; 5. Slide; 6. Clamping assembly; 61. Fixing frame; 62. Main spindle; 63. Clamping motor; 64. Groove; 65. Gripper; 7. Conveying assembly; 71. Drive groove; 72. Drive screw; 73. Drive motor; 8. Adjustment assembly; 81. Adjustment cylinder; 82. Stop bar; 9. Support frame; 10. First slide; 11. Second slide; 12. Wrinkling scraper. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] Example 1: A fully automatic grinding device for a paper machine creping doctor blade 12, such as... Figure 1-2As shown, the system includes a base plate 1, on which an electric grinder 2 is mounted. A grinding head 3 for grinding the wrinkling scraper 12 is fixed at the output end of the electric grinder 2. A first slide 105 is elastically compressible and laterally mounted on the left side of the base plate 1. This elastic compressibility and lateral mounting is achieved by bolt connection and a first spring connected to the bolt. A second slide 115 is elastically compressible and laterally mounted on the left side of the first slide 105. This elastic compressibility and lateral mounting is also achieved by bolt connection and a second spring connected to the bolt. This compensates for the error caused by the width variation of the wrinkling scraper 12 substrate when the grinding head 3 grinds the end face of the wrinkling scraper 12, thereby controlling the grinding accuracy to within 0. Within 0.01-0.02mm; a movable seat 4 slides on the base plate 1, and the movable seat 4 and the electric grinder 2 are located on both sides of the grinding head 3. A slide 5 slides on the movable seat 4, and a clamping component 6 is installed on the slide 5 to hold the wrinkling scraper 12. A conveying component 7 is installed on the movable seat 4 to drive the slide 5 to move horizontally. An adjusting component 8 is installed on the base plate 1 to drive the movable seat 4 to move closer to the grinding head 3. The wrinkling scraper 12 is clamped on one side of the slide 5 by the clamping component 6. The adjusting component 8 pushes the movable seat 4 and the wrinkling scraper 12 closer to the grinding head 3. The electric grinder 2 drives the grinding head 3 to rotate and grind the processing end face of the wrinkling scraper 12. During this period, the conveying component 7 drives the slide 5 to move horizontally, so that the wrinkling scraper 12 moves horizontally. The grinding head 3 grinds the processing end face of the wrinkling scraper 12, realizing the integration of automated clamping, conveying and grinding.

[0033] like Figure 1-3 As shown, multiple supports 9 are fixed on the side of the slide 5 near the grinding head 3. The clamping assembly 6 includes a fixed frame 61 fixed to the slide 5. A main shaft 62 is rotatably connected inside the fixed frame 61. Multiple jaws 65 are fixed along the axial direction of the main shaft 62. A clamping motor 63 that drives the main shaft 62 to rotate is installed on one side of the fixed frame 61. When the wrinkling scraper 12 is placed on the support 9, the clamping motor 63 is started, causing the clamping motor 63 to drive the main shaft 62 to rotate. In turn, the main shaft 62 drives the multiple jaws 65 to rotate, clamping the wrinkling scraper 12 between the jaws 65 and the support 9. This prevents the wrinkling scraper 12 from shifting during grinding and improves the stability of the grinding operation.

[0034] As a further embodiment of this utility model, a pad can be fixed on the support frame 9. The pad is located between the wrinkling scraper 12 and the support frame 9 and can be used to tilt the wrinkling scraper 12. The clamping jaw 65 clamps the wrinkling scraper 12 between the clamping jaw 65 and the pad to adjust the angle between the wrinkling scraper 12 and the support frame 9, so that the end face of the wrinkling scraper 12 can better fit with the grinding head 3. The pad can be fixed on the support frame 9 in various ways, such as by bolt fixing, which can adjust the position of the pad or remove the pad from the support frame 9.

[0035] like Figure 1As shown, the fixed frame 61 is provided with slots 64 corresponding to the number of grippers 65. One end of the gripper 65 passes through the slot 64 and is fixedly connected to the main shaft 62, thereby improving the overall structural stability.

[0036] As a further embodiment of this utility model, the gripper 65 is configured as an arc-shaped gripper 65, which enables the gripper 65 to hold blades of different thicknesses within a certain range, thereby suppressing the micro-movement of the wrinkling scraper 12.

[0037] As a further embodiment of this utility model, an anti-wear sleeve is fixed to the end of the gripper 65 away from the spindle 62 to prevent blade wear caused by direct contact between the end of the gripper 65 and the wrinkling scraper 12. The anti-wear sleeve can be set as an elastomer anti-wear sleeve, which has strong wear resistance and is suitable for high-frequency clamping operations.

[0038] like Figure 1 As shown, the conveying component 7 includes a drive groove 71 disposed on the movable seat 4. A drive screw 72 is rotatably connected in the drive groove 71. The bottom of the slide 5 is threadedly connected to the drive screw 72 and slides in the drive groove 71. A drive motor 73 that drives the drive screw 72 to rotate is fixedly installed on one side of the movable seat 4. When the drive motor 73 is started, the drive motor 73 drives the drive screw 72 to rotate, and then the drive screw 72 drives the slide 5 to slide along the drive groove 71, so that the wrinkling scraper 12 moves in the horizontal direction, thereby enabling the grinding head 3 to fully grind the processing end face of the wrinkling scraper 12. The overall operation reduces manual operation and lowers safety hazards. During use, the drive screw 72 can be manually cleaned periodically, or a protective plate can be added to the drive screw 72 to prevent the drive screw 72 from being affected by grinding debris.

[0039] like Figure 1 As shown, the adjustment assembly 8 includes an adjustment cylinder 81 fixedly installed on the base plate. The adjustment cylinder 81 and the grinding head 3 are located on both sides of the movable seat 4. The output end of the adjustment cylinder 81 is fixedly connected to the movable seat 4. After the wrinkling scraper 12 is clamped onto the support frame 9 by the clamping assembly 6, the adjustment cylinder 81 is activated. The output end of the adjustment cylinder 81 extends and pushes the movable seat 4 and the wrinkling scraper 12 closer to the grinding head 3 until the processing end face of the wrinkling scraper 12 is in contact with the grinding head 3 for grinding. This adjustment assembly 8 enables the grinding head 3 to grind wrinkling scrapers 12 of different widths.

[0040] As a further embodiment of this utility model, the base plate 1 is fixed with baffles 82 located on both sides of the movable seat 4 and attached to the outer walls of both sides of the movable seat 4. The baffles 82 are used to limit the movement of the movable seat 4 and improve the overall operational stability.

Claims

1. A fully automatic grinding device for creping doctor blades in paper machines, comprising a base plate (1), wherein an electric grinder (2) is mounted on the base plate (1), and a grinding head (3) for grinding creping doctor blades (12) is fixed at the output end of the electric grinder (2), characterized in that: A movable seat (4) slides on the base plate (1). The movable seat (4) and the electric mill (2) are located on both sides of the grinding head (3). A slide block (5) slides on the movable seat (4). A clamping assembly (6) for holding the wrinkling scraper (12) is installed on the slide block (5). A conveying assembly (7) for driving the slide block (5) to move in the horizontal direction is installed on the movable seat (4). An adjusting assembly (8) for driving the movable seat (4) to move closer to the grinding head (3) is installed on the base plate (1).

2. The fully automatic grinding device for creping doctor blades in paper machines according to claim 1, characterized in that: The slide (5) has multiple supports (9) fixed on the side near the grinding head (3). The clamping assembly (6) includes a fixed frame (61) fixed to the slide (5). A main shaft (62) is rotatably connected inside the fixed frame (61). Multiple jaws (65) are fixed along the axial direction on the main shaft (62). A clamping motor (63) for driving the main shaft (62) to rotate is installed on one side of the fixed frame (61).

3. The fully automatic grinding device for creping doctor blades in paper machines according to claim 2, characterized in that: The fixing frame (61) is provided with slots (64) corresponding to the number of grippers (65). One end of the gripper (65) passes through the slot (64) and is fixedly connected to the main shaft (62).

4. The fully automatic grinding device for creping doctor blades in paper machines according to claim 2, characterized in that: The gripper (65) is configured as an arc-shaped gripper (65).

5. The fully automatic grinding device for creping doctor blades in paper machines according to claim 4, characterized in that: The end of the gripper (65) away from the spindle (62) is fixed with an anti-wear sleeve.

6. The fully automatic grinding device for creping doctor blades in paper machines according to claim 1, characterized in that: The transport assembly (7) includes a drive groove (71) disposed on the movable seat (4), a drive screw (72) is rotatably connected in the drive groove (71), the bottom of the slide (5) is threadedly connected to the drive screw (72) and slides in the drive groove (71), and a drive motor (73) for driving the drive screw (72) to rotate is fixedly installed on one side of the movable seat (4).

7. The fully automatic grinding device for creping doctor blades in paper machines according to claim 1, characterized in that: The adjustment assembly (8) includes an adjustment cylinder (81) fixedly installed on the base plate. The adjustment cylinder (81) and the grinding head (3) are located on both sides of the movable seat (4). The output end of the adjustment cylinder (81) is fixedly connected to the movable seat (4).

8. The fully automatic grinding device for creping doctor blades in paper machines according to claim 7, characterized in that: The base plate (1) is fixed with baffles (82) located on both sides of the movable seat (4) and attached to the outer walls of both sides of the movable seat (4).

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