Device for adjusting gap between rollers

Abstract

The utility model discloses a roller gap adjusting device which comprises wallboards on the two sides of a rack, a transfer steel roller and a metering roller, the transfer steel roller is fixed on the wallboards on the two sides, the metering roller is connected to the wallboards on the two sides through a gap adjusting device, and the gap adjusting device comprises a supporting frame, a sliding rail, a sliding seat assembly, an inclined wedge block, a driving component and a telescopic abutting component. The sliding seat assembly linearly moves left and right along the sliding rail, the sliding seat assembly and the inclined wedge block form a matched inclined wedge combination, the driving component comprises a lead screw, a lead screw nut, a speed reducer, an adjusting rod and a driving part, and the inclined wedge block is fixedly connected with the lead screw nut. The inclined wedge block can be driven to linearly move up and down by rotating the lead screw, and the inclined wedge block drives the sliding seat assembly provided with the metering roller to linearly move left and right, so that a gap between the metering roller and a transfer steel roller can be adjusted; the speed reducer is arranged to reduce the rotating speed of the driving piece in proportion, so that the metering roller just transversely moves by 0.01 mm when the driving piece rotates by one circle, and the adjusting precision of the gap between the rollers is improved.

Description

Technical Field

[0001] This utility model relates to the field of solventless laminating machine technology, and in particular to a device for adjusting the gap between the metering roller and the transfer steel roller of a solventless laminating machine. Background Technology

[0002] Solvent-free laminating machines are a method of bonding two or more substrates together using solvent-free adhesives. Solvent-free laminating machines are widely used in the flexible packaging industry.

[0003] The coating mechanism of a solventless laminator includes, from bottom to top, a metering roller, a transfer steel roller, a transfer adhesive roller, a coating steel roller, and a coating adhesive roller. The gap between the metering roller and the transfer steel roller controls the coating amount; therefore, the adjustment accuracy of this gap directly affects the accuracy of the coating amount adjustment. After each day's work, the coating mechanism of the solventless laminator needs to be disassembled for cleaning. Therefore, the gap between the metering roller and the transfer steel roller must be readjusted before each start of work. This requires the gap adjustment device to ensure both high adjustment efficiency and high adjustment accuracy.

[0004] Existing solventless laminating machines typically use threaded screws to adjust the roller gap. This involves an adjusting slider at one end of the metering roller, with a threaded hole on the slider that mates with the threaded screw. The gap between the metering roller and the transfer steel roller is adjusted by the threaded engagement between the screw and the adjusting slider. However, this roller gap adjustment device suffers from low adjustment accuracy. Utility Model Content

[0005] To address the issue that existing solventless laminating machines typically use threaded screws for adjusting roller gaps, resulting in low adjustment accuracy, this invention provides a roller gap adjustment device. This device features a sliding block assembly that moves linearly left and right along a slide rail. The sliding block assembly and a wedge block form a mating wedge combination. The wedge block is fixedly connected to a screw nut. Rotating the screw drives the wedge block to move linearly up and down, which in turn drives the sliding block assembly housing the metering roller to move linearly left and right, thereby adjusting the gap between the metering roller and the transfer steel roller. A speed reducer proportionally reduces the rotational speed of the drive component, ensuring that the metering roller moves laterally by exactly 0.01 mm when the drive component rotates one revolution, thus improving the roller gap adjustment accuracy.

[0006] To achieve the above objectives, this utility model provides a roller gap adjustment device, including two side wall panels of a frame, a transfer steel roller, and a metering roller. The two ends of the transfer steel roller are rotatably connected to the two side wall panels of the frame via bearings. Both ends of the metering roller are fixedly connected to one side of the transfer steel roller on the two side wall panels of the frame via a gap adjustment device. The axis of the metering roller is parallel to the axis of the transfer steel roller and lies in the same horizontal plane. The gap adjustment device includes a support frame, a slide rail, a slide block assembly, a wedge block, a driving component, and a retractable clamping component. One side of the support frame is fixedly connected to the wall panel and is configured as a square frame structure. A slide rail is provided on the inner side of the lower side wall of the support frame. The lower end of the slide block assembly is provided with a component that corresponds to the slide rail. The sliding block has a mating hole at its upper end that mates with the rotating metering roller. The inclined wedge block slides up and down along the height direction and is connected to the inner side of the side wall connecting the support frame and the wall panel. The side of the inclined wedge block facing the slide assembly is a first inclined surface, and the side of the slide assembly facing the inclined wedge block is a second inclined surface that mates with the inclined wedge block. During operation, the first inclined surface and the second inclined surface fit together to form a mating inclined wedge assembly. The driving component is used to drive the inclined wedge block to slide up and down, drive the slide assembly to move linearly left and right, and adjust the gap between the metering roller and the transfer steel roller. The retractable pressing component is located on the side wall of the support frame far from the wall panel and is fixedly connected to the slide assembly. It is used to press the second inclined surface against the first inclined surface.

[0007] The driving component includes a lead screw, a lead screw nut, a reducer, and an adjusting rod. The lead screw nut is a flanged nut. A first through hole is provided in the middle of the wedge block. The upper end of the lead screw nut is inserted into the first through hole, and the lower flange is fixedly connected to the lower plane of the wedge block. The upper end of the lead screw is threaded to the lead screw nut and passes through the lead screw nut. The lower end of the lead screw passes through the lower side wall of the support frame. The reducer is located below the support frame. The lower end of the lead screw is fixedly connected to the upper output shaft of the reducer through a coupling. One end of the adjusting rod is fixedly connected to the input shaft of the reducer through a coupling, and the other end is connected to a driving component that drives the adjusting rod to rotate.

[0008] The angle α between the first and second inclined planes and the vertical plane is the same, both set to 5±1°. During operation, the dial indicator handwheel or servo motor rotates one revolution, and after being decelerated by the reducer, the slide assembly can move linearly along the slide rail by 0.01mm.

[0009] The rotational speed of the driving component is reduced proportionally by a speed reducer. By setting the speed reducer ratio and the tilt angle of the first inclined surface of the wedge block, the driving component rotates one revolution, causing the slide assembly holding the metering roller to move laterally by exactly 0.01mm. The structure is simple, the operation is convenient, and the gap adjustment accuracy reaches 0.01mm.

[0010] Furthermore, a bearing seat is provided on the lower side of the support frame at a position corresponding to the lead screw, and a rolling bearing is provided inside the bearing seat. The rolling bearing is a double-row deep groove ball bearing, and the outer circular surface of the lower end of the lead screw is fastened to the inner ring of the rolling bearing.

[0011] Double-row deep groove ball bearings make the lead screw rotate more smoothly and have a longer service life.

[0012] Furthermore, the support frame has a first square groove in the middle of the front and rear sides of the sidewall that is slidably connected to the wedge block. A baffle is fixedly connected in the first square groove. The baffle extends to the middle of the wedge block on one side, and the upper end of the extension extends upward. There is a gap between the upward extension end and the inner side of the upper sidewall of the support frame. One side of the wedge block far slide assembly is provided with a stepped part with a reduced width. The stepped part is locked in the baffles on both sides. The baffles on both sides play a sliding guiding role for the wedge block, which can prevent the wedge block from deviating or rotating.

[0013] Furthermore, the retractable clamping component adopts a double-acting cylinder, which is installed on the outer side of the support frame. The support frame has a first through hole on the corresponding side wall. The piston rod of the double-acting cylinder passes through the second through hole and is connected to a screw at its end. The slide assembly has a threaded hole at the position corresponding to the screw. The other end of the screw is threadedly connected to the threaded hole. The axes of the piston rod and the screw are in the same horizontal plane as the axis of the mating hole.

[0014] Furthermore, the retractable clamping component is a compression spring. One end of the compression spring is fixedly connected to the slide assembly, and the other end is fixedly connected to the inner wall of the support frame. A guide rod is sleeved inside the compression spring. The slide assembly has a guide hole at the corresponding position of the guide rod. One end of the guide rod is fixedly connected to the inner side of the support frame, and the other end extends into the guide hole. The axes of the compression spring and the guide rod are in the same horizontal plane as the axis of the mating hole.

[0015] Furthermore, the slide assembly includes a slide, a connecting plate, and a slider connected sequentially from top to bottom. The upper end of the connecting plate is provided with an opening groove, and the lower end of the slide is engaged in the opening groove. The front and rear sides of the slide are fixedly connected to the front and rear sidewalls of the opening groove by bolts. The upper end face of the slider is fixedly connected to the lower end face of the connecting plate by bolts. The lower end is provided with a sliding groove that cooperates with the slide rail. The sliding groove is sleeved with the slide rail, and the slider and the sliding groove form a linearly movable connection.

[0016] The purpose of disassembling the slide assembly into the slide, connecting plate, and slider is to facilitate the processing of the slide and slider, and also to allow the slide, slider, and connecting plate to be made of different materials according to process requirements. The slider can be surface hardened to meet wear resistance requirements and improve service life.

[0017] Furthermore, it also includes a through gauge and a stop gauge. The through gauge is 0.08 mm thick and the stop gauge is 0.09 mm thick. When adjusting the gap, the through gauge and the stop gauge are inserted between the transfer steel roller and the metering roller in sequence, so that the through gauge can pass through but the stop gauge cannot.

[0018] By using a test gauge and a stop gauge, the gap adjustment accuracy can be made as precise as 0.01mm, which is intuitive, convenient and quick.

[0019] Furthermore, the support frame has a second square groove on both the upper and lower sides of the inner side wall connected to the wall panel. The bottom surface of the second square groove has two bolt holes, and the four bolt holes on the bottom surface of the two second square grooves are evenly distributed in an array. The wall panel has internal threaded holes at the positions corresponding to the four bolt holes. The support frame is locked and fixed to the wall panel by four bolts passing through these four bolt holes. The bolt heads are hidden in the second square grooves, and the end faces cannot protrude from the inner side wall of the corresponding side wall of the support frame.

[0020] Furthermore, the left and right sides of the front and rear end faces of the support frame are respectively provided with a left protective cover plate and a right protective cover plate. The right protective cover plate has a first round-headed opening groove in the middle corresponding to the mating hole, and the left protective cover plate has a second round-headed opening groove in the middle. The first round-headed opening groove and the second round-headed opening groove are connected to form a complete waist-shaped groove.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. This utility model sets up a sliding block assembly that moves linearly left and right along the slide rail. The sliding block assembly and the inclined wedge block form a matching inclined wedge combination. The inclined wedge block is fixedly connected to the screw nut. Rotating the screw nut can drive the inclined wedge block to move linearly up and down. The inclined wedge block drives the sliding block assembly on which the metering roller is installed to move linearly left and right, thereby adjusting the gap between the metering roller and the transfer steel roller.

[0023] 2. The present invention uses a speed reducer to proportionally reduce the rotational speed of the driving component, so that the metering roller moves laterally by exactly 0.01mm when the driving component rotates one revolution, thereby improving the adjustment accuracy of the gap between the rollers.

[0024] 3. This utility model uses a 0.08mm through gauge and a 0.09mm stop gauge to detect the gap between the rollers, ensuring that the through gauge can pass through while the stop gauge cannot. The detection accuracy reaches 0.01mm, and the operation is convenient and quick. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the connection structure between the present invention and the metering roller and the transfer steel roller;

[0026] Figure 2This is a schematic diagram of the structure of an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0028] Figure 4 for Figure 3 Sectional view of AA;

[0029] Figure 5 for Figure 3 BB section view;

[0030] Figure 6 for Figure 3 CC section view;

[0031] Figure 7 This is a schematic diagram of the support frame structure according to an embodiment of the present utility model;

[0032] Figure 8 This is a schematic diagram of the structure of adding a protective cover plate to the support frame in an embodiment of this utility model.

[0033] In the diagram: 1. Metering roller; 2. Transfer steel roller; 3. Gap adjustment device; 301. Support frame; 3011. Notch; 3012. Second square groove; 3013. First square groove; 3014. Opening slot; 3015. Second through hole; 302. Slide block; 3021. Mating hole; 3022. Threaded hole; 3023. Second inclined plane; 303. Self-lubricating radial spherical bearing; 304. Screw; 305. Double-acting cylinder; 306. Slide rail; 307. Slider; 308. Connecting plate. 3081, Opening slot; 309, Handwheel with dial indicator; 310, Adjusting rod; 311, Reducer; 312, Coupling; 313, Reducer mounting plate; 314, Bearing seat; 315, Flange screw nut; 316, Baffle; 317, Wedge block; 3171, First inclined surface; 3172, First through hole; 3173, Stepped section; 318, Screw; 319, Right protective cover plate; 3191, First round-head opening slot; 320, Left protective cover plate; 3201, Second round-head opening slot. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figures 1-6As shown, this embodiment of the utility model includes two side wall panels of the frame, a transfer steel roller 2, and a metering roller 1. The two ends of the transfer steel roller 2 are rotatably connected to the two side wall panels of the frame via bearings. Both ends of the metering roller 1 are fixedly connected to one side of the transfer steel roller 2 on the two side wall panels of the frame via a gap adjustment device 3. The axis of the metering roller 1 is parallel to the axis of the transfer steel roller 2 and lies in the same horizontal plane. The gap adjustment device 3 includes a support frame 301, a slide rail 302, a slide block assembly, a wedge block 318, a driving component, and a retractable clamping component. One side of the support frame 301 is fixedly connected to the wall panel and is configured as a square frame structure. A slide rail 306 is provided on the inner side of the lower side wall of the support frame 301. The lower end of the slide block assembly has a slider 307 that slides in cooperation with the slide rail 306, and the upper end has a mating hole 30 that rotatably cooperates with the metering roller 1. 21. A self-lubricating radial spherical bearing 303 is provided in the mating hole. The inclined wedge 317 is slidably connected to the inner side of the side wall connecting the support frame 301 and the wall plate along the height direction. The side of the inclined wedge 317 facing the slide assembly is set as the first inclined surface 3171. The side of the slide assembly facing the inclined wedge 317 is set as the second inclined surface 3023 that mates with the inclined wedge. During operation, the first inclined surface 3171 and the second inclined surface 3023 are in contact to form a mating inclined wedge combination. The driving component is used to drive the inclined wedge 317 to slide up and down, and drive the slide assembly to move linearly left and right, thereby adjusting the gap between the metering roller 1 and the transfer steel roller 2. The telescopic abutting component is provided on the side wall of the far wall plate of the support frame 1 and is fixedly connected to the slide assembly. It is used to press the second inclined surface 3023 against the first inclined surface 3171.

[0036] The drive components include a lead screw 318, a lead screw nut 315, a reducer 311, and an adjusting rod 310. The lead screw nut 315 is a flanged nut. The wedge block 317 has a first through hole 3172 in the middle. The upper end of the lead screw nut 315 is inserted into the first through hole 3172, and the lower flange is fixedly connected to the lower plane of the wedge block 317. The upper end of the lead screw 318 is threadedly connected to the lead screw nut 315 and passes through the lead screw nut 315. The lower end of the lead screw 318 passes through the lower side wall of the support frame 301. The reducer 311 is located below the support frame 301. The lower end of the lead screw 318 is fixedly connected to the upper output shaft of the reducer 311 through a coupling 312. One end of the adjusting rod 310 is fixedly connected to the input shaft of the reducer 311 through a coupling, and the other end is connected to a drive component that drives the adjusting rod to rotate.

[0037] The driving component can be a dial-up handwheel or a servo motor. In this embodiment, a dial-up handwheel 309 is selected.

[0038] During operation, the operator rotates the handwheel 309, causing the adjusting rod 310 to rotate. This rotation, via the reducer 311, drives the lead screw 318 to rotate at a reduced speed. The rotation of the lead screw 318 causes the lead screw nut 315 to move linearly along the lead screw 318. The lead screw nut 318 then drives the wedge block 317 connected to it to move linearly up and down. The first inclined surface 3171 of the wedge block 317 and the second inclined surface 3023 on the slide assembly form a wedge combination. Therefore, the wedge block 317 can drive the slide assembly to move laterally in a linear fashion, thereby adjusting the gap between the metering roller 1 and the transfer steel roller 2 installed on the slide assembly. The gap change adjusted by the wedge is linear, thus ensuring stable gap adjustment during the adjustment process, reducing adjustment errors, and improving adjustment accuracy.

[0039] The angle α between the first inclined plane 3171 and the second inclined plane 3023 and the vertical plane is the same, both set to 5°. During operation, the dial indicator handwheel 309 rotates one revolution, and after being reduced by the reducer 311, the slide assembly can move linearly 0.01mm along the slide rail 306.

[0040] The rotational speed of the driving component is reduced proportionally by the reducer 311. By setting the reduction ratio of the reducer 311 and the tilt angle of the first inclined surface 3171 of the wedge block 317, the drive component rotates one revolution, causing the slide assembly on which the metering roller is mounted to move laterally by exactly 0.01mm. The structure is simple, the operation is convenient, and the gap adjustment accuracy reaches 0.01mm.

[0041] Furthermore, a bearing seat 314 is provided on the lower side of the support frame 301 at a position corresponding to the lead screw 318. A rolling bearing is provided inside the bearing seat 314. The rolling bearing is a double-row deep groove ball bearing. The outer circle of the lower end of the lead screw 318 is fastened to the inner ring of the rolling bearing.

[0042] The double-row deep groove ball bearings make the 318 lead screw rotate more smoothly and have a longer service life.

[0043] Furthermore, such as Figure 2 , Figure 3 , Figure 7 As shown, the front and rear sides of the sidewall of the support frame 301, which is slidably connected to the inclined wedge 317, are provided with a first square groove 3013 in the middle. A baffle 316 is fixedly connected in the first square groove 3013. The baffle 316 extends to the middle of the inclined wedge 317 on one side facing the inclined wedge 317, and the upper end of the extension extends upward. There is a gap between the upward extension end and the inner side of the upper sidewall of the support frame 301. One side of the inclined wedge 317 is provided with a stepped part 3173 with a reduced width. The stepped part 3173 is locked in the baffles 316 on both sides. The baffles 316 on both sides play a sliding guiding role for the inclined wedge 317, which can prevent the inclined wedge 317 from deviating or rotating.

[0044] Furthermore, such as Figure 2 , Figure 3, Figure 4 As shown, the retractable clamping component uses a double-acting cylinder 305. The double-acting cylinder 305 is installed on the outer side of the support frame 301. The support frame 301 has a second through hole 3015 on the corresponding side wall. The piston rod of the double-acting cylinder 305 passes through the second through hole 3015 and is connected to a screw 304 at its end. The slide assembly has a threaded hole 3022 at the position corresponding to the screw 304. The other end of the screw 304 is threadedly connected to the threaded hole 3022. The axes of the piston rod of the double-acting cylinder 305 and the screw 304 are in the same horizontal plane as the axis of the mating hole 3021.

[0045] Furthermore, such as Figure 6 As shown, the slide assembly includes a slide 302, a connecting plate 308, and a slider 307 connected sequentially from top to bottom. The upper end of the connecting plate 308 is provided with an opening groove 3081, and the lower end of the slide 302 is engaged in the opening groove 3081. The front and rear sides of the slide 302 are fixedly connected to the front and rear side walls of the opening groove 3081 by bolts. The upper end face of the slider 307 is fixedly connected to the lower end face of the connecting plate 308 by bolts. The lower end of the slider 307 is provided with a sliding groove that cooperates with the slide rail 306. The sliding groove is sleeved with the slide rail 306, and the slider 306 and the sliding groove form a linearly movable connection.

[0046] The purpose of disassembling the slide assembly into slide 302, connecting plate 308 and slider 307 is to facilitate the processing of slide 302 and slider 307, and also to facilitate the selection of different materials for slide 302, slider 307 and connecting plate 308 according to process requirements. Slider 307 can be surface hardened to meet wear resistance requirements and improve service life.

[0047] Furthermore, it also includes a through gauge and a stop gauge. The through gauge is 0.08 mm thick and the stop gauge is 0.09 mm thick. When adjusting the gap, the through gauge and the stop gauge are inserted between the transfer steel roller 2 and the metering roller 1 in sequence, so that the through gauge can pass through but the stop gauge cannot.

[0048] By using a test gauge and a stop gauge, the gap adjustment accuracy can be made as precise as 0.01mm, which is intuitive, convenient and quick.

[0049] Furthermore, such as Figure 7As shown, the upper end of the side of the support frame 301 connected to the wall panel has a notch 3011 for engaging with the wall panel. The upper and lower sides of the inner side of the side wall of the support frame 301 connected to the wall panel have second square grooves 3012. The bottom surface of the second square groove 3012 has two bolt holes. The four bolt holes on the bottom surface of the two second square grooves 3012 are evenly distributed in an array. The wall panel has internal threaded holes at the positions corresponding to the four bolt holes. The support frame 301 is threaded and locked to the wall panel by four bolts passing through these four bolt holes. The bolt heads are hidden in the second square grooves 3012, and the end faces cannot protrude from the inner side of the corresponding side wall of the support frame 301.

[0050] Furthermore, such as Figure 7 As shown, the left and right sides of the front and rear end faces of the support frame 301 are respectively provided with a left protective cover plate 320 and a right protective cover plate 319. The right protective cover plate 319 is provided with a first round-headed opening groove 3191 in the middle corresponding to the mating hole 3021. The left protective cover plate 320 is provided with a second round-headed opening groove 3201 in the middle. The first round-headed opening groove 3191 and the second round-headed opening groove 3201 are connected to form a complete waist-shaped groove.

[0051] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this utility model, and these improvements and substitutions should also be considered within the protection scope of this utility model.

Claims

1. A roller gap adjustment device, comprising two side wall plates of a frame, a transfer steel roller, and a metering roller, wherein the two ends of the transfer steel roller are rotatably connected to the two side wall plates of the frame via bearings, and both ends of the metering roller are fixedly connected to one side of the transfer steel roller on the two side wall plates of the frame via a gap adjustment device, wherein the axis of the metering roller is parallel to the axis of the transfer steel roller and lies in the same horizontal plane, characterized in that: The gap adjustment device includes a support frame, a slide rail, a slide assembly, an inclined wedge, a driving component, and a retractable clamping component. The support frame is fixedly connected to the wall panel on one side and is configured as a square frame structure. A slide rail is provided on the inner side of the lower side wall of the support frame. The lower end of the slide assembly is provided with a slider that slides in cooperation with the slide rail, and the upper end is provided with a mating hole that rotates in cooperation with the metering roller. The inclined wedge slides up and down along the height direction and is connected to the inner side of the side wall where the support frame connects to the wall panel. The side of the inclined wedge facing the slide assembly is configured as a first inclined surface, and the side of the slide assembly facing the inclined wedge is configured as a second inclined surface that mates with the inclined wedge. During operation, the first inclined surface and the second inclined surface fit together to form a mating inclined wedge assembly. The driving component is used to drive the inclined wedge to slide up and down, thereby driving the slide assembly to move linearly left and right to adjust the gap between the metering roller and the transfer steel roller. The retractable clamping component is located on the side wall of the support frame away from the wall panel and is fixedly connected to the slide assembly. It is used to press the second inclined surface against the first inclined surface. The driving component includes a lead screw, a lead screw nut, a reducer, and an adjusting rod. The lead screw nut is a flanged nut. A first through hole is provided in the middle of the wedge block. The upper end of the lead screw nut is inserted into the first through hole, and the lower flange is fixedly connected to the lower plane of the wedge block. The upper end of the lead screw is threaded to the lead screw nut and passes through the lead screw nut. The lower end of the lead screw passes through the lower side wall of the support frame. The reducer is located below the support frame. The lower end of the lead screw is fixedly connected to the upper output shaft of the reducer through a coupling. One end of the adjusting rod is fixedly connected to the input shaft of the reducer through a coupling, and the other end is connected to a driving component that drives the adjusting rod to rotate. The angle α between the first and second inclined planes and the vertical plane is the same, both set to 5±1°. During operation, the dial indicator handwheel or servo motor rotates one revolution, and after being decelerated by the reducer, the slide assembly can move linearly along the slide rail by 0.01mm.

2. The roller gap adjustment device according to claim 1, characterized in that: A bearing seat is provided on the lower side of the support frame at a position corresponding to the lead screw. A rolling bearing is provided inside the bearing seat. The rolling bearing is a double-row deep groove ball bearing. The outer circular surface of the lower end of the lead screw is fastened to the inner ring of the rolling bearing.

3. The roller gap adjusting device according to claim 1, characterized in that: The support frame has a first square groove in the middle of the front and rear sides of the sidewall that is slidably connected to the wedge block. A baffle is fixedly connected in the first square groove. The baffle extends to the middle of the wedge block on one side, and the upper end of the part of the baffle that extends beyond the corresponding side of the first square groove extends upward. A gap is left between the upwardly extending end and the inner side of the upper sidewall of the support frame. One side of the wedge block far slide assembly is provided with a stepped part with a reduced width. The stepped part is locked in the baffles on both sides. The baffles on both sides play a sliding guiding role for the wedge block, which can prevent the wedge block from deviating or rotating.

4. The roller gap adjusting device according to claim 1, characterized in that: The retractable clamping component uses a double-acting cylinder, which is installed on the outer side of the support frame. The support frame has a first through hole on the corresponding side wall. The piston rod of the double-acting cylinder passes through the second through hole and is connected to a screw at its end. The slide assembly has a threaded hole at the position corresponding to the screw. The other end of the screw is threadedly connected to the threaded hole. The axes of the piston rod and the screw are in the same horizontal plane as the axis of the mating hole.

5. The roller gap adjusting device according to claim 1, characterized in that: The retractable clamping component uses a compression spring. One end of the compression spring is fixedly connected to the slide assembly, and the other end is fixedly connected to the inner side wall of the support frame. A guide rod is sleeved inside the compression spring. The slide assembly has a guide hole at the corresponding position of the guide rod. One end of the guide rod is fixedly connected to the inner side of the support frame, and the other end extends into the guide hole. The axes of the compression spring and the guide rod are in the same horizontal plane as the axis of the mating hole.

6. The roller gap adjusting device according to claim 1, characterized in that: The slide assembly includes a slide, a connecting plate, and a slider connected sequentially from top to bottom. The upper end of the connecting plate is provided with an opening groove, and the lower end of the slide is engaged in the opening groove. The front and rear sides of the slide are fixedly connected to the front and rear sidewalls of the opening groove by bolts. The upper end face of the slider is fixedly connected to the lower end face of the connecting plate by bolts. The lower end is provided with a sliding groove that mates with the slide rail. The sliding groove is sleeved with the slide rail, and the slider and the sliding groove form a linearly movable connection.

7. The roller gap adjusting device according to claim 1, characterized in that: It also includes a through gauge and a stop gauge. The through gauge is 0.08 mm thick and the stop gauge is 0.09 mm thick. When adjusting the gap, the through gauge and the stop gauge are inserted between the transfer steel roller and the metering roller in sequence, so that the through gauge can pass through but the stop gauge cannot.

8. The roller gap adjusting device according to claim 1, characterized in that: The support frame has two second square grooves on the upper and lower sides of the inner side wall connected to the wall panel. Two bolt holes are provided on the bottom surface of the second square groove. The four bolt holes on the bottom surface of the two second square grooves are evenly distributed in an array. The wall panel has internal threaded holes at the positions corresponding to the four bolt holes. The support frame is locked and fixed to the wall panel by four bolts passing through these four bolt holes. The bolt heads are hidden in the second square grooves and the end faces cannot protrude from the inner side wall of the corresponding side wall of the support frame.

9. The roller gap adjusting device according to claim 1, characterized in that: The support frame has a left protective cover plate and a right protective cover plate on the left and right sides of the front and rear end faces, respectively. The right protective cover plate has a first round-headed opening groove in the middle corresponding to the mating hole. The left protective cover plate has a second round-headed opening groove in the middle. The first round-headed opening groove and the second round-headed opening groove are connected to form a complete waist-shaped groove.

Images