A device for adjusting the runout of a napping machine

Abstract

The utility model discloses a kind of movement adjustment devices of sanding machine, including support frame and guide roller, the movement adjustment device of sanding machine further include the sliding block being connected with support frame, the sliding block is located in the one end of guide roller, the end of guide roller is rotatably connected with sliding block, the outer wall of guide roller is equipped with movable slot, the inside of guide roller is equipped with the bidirectional screw rod coaxial with it, the end of bidirectional screw rod is equipped with threaded section;It further include the locking device for limiting the rotation of guide roller, and including the threaded sleeve on the threaded section, threaded sleeve is connected between with fixed rod, the fixed rod passes through movable slot and is limited by it.Locking device is relatively fixed after the spatial position of guide roller, can be translated by rotating bidirectional screw rod drive limit ring, so that the axial movement of the cloth being processed is restrained.The utility model is suitable for sanding machine.

Description

Technical Field

[0001] This utility model relates to the field of sanding equipment, and in particular to a lateral movement adjustment device for a sanding machine. Background Technology

[0002] Denim fabrics are often dry-brushed using a brushing machine. After desizing, washing, and drying, the denim fabric is fed flat into the brushing machine. By adjusting the speed of the brushing rollers, the fabric speed, the contact pressure, and the number of brushing passes, the brushing rollers rub the fabric surface at high speed, causing the yarns to form a uniform short pile. Different brushing roller mesh sizes are suited to different pile texture requirements. After brushing, the fabric undergoes brushing and dust removal, high-temperature setting and cooling, and the loose pile is removed and the pile surface is fixed, ultimately achieving a soft, skin-friendly, matte, distressed effect. To ensure brushing pressure, brushing machines are generally equipped with auxiliary mechanisms such as guide rollers. The fabric is wound, pulled, and tensioned within the guide roller group and brushing roller group, achieving continuous brushing, feeding, and winding of the fabric.

[0003] However, due to the thickness and significant inertia of denim fabric, axial movement often occurs during the conveying and napping process. In existing technology, napping machines typically adjust this movement using a motor and a series of bevel gear assemblies. Once adjusted, no further adjustments are usually made unless the fabric specifications are changed. However, in actual use, because denim fabric is thick and untrimmed, its width dimensions are not absolutely precise. Therefore, even with fabric from the same batch, the lateral movement will repeatedly occur when the napping machine finishes one roll and moves to the next, resulting in uneven napping and poor napping quality. Utility Model Content

[0004] The purpose of this utility model is to provide a movement adjustment device for a sanding machine to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The technical solution adopted to solve the above-mentioned technical problems is as follows: A sway adjustment device for a sanding machine includes a support frame, the support frame being equipped with a guide roller rotatable about its own axis, and the sway adjustment device for the sanding machine further includes: A sliding block is connected to a support frame. The sliding block is located at one end of the guide roller. The sliding block has a guide roller mounting hole coaxial with the guide roller. The guide roller is a hollow cylindrical structure. The end of the guide roller is rotatably connected to the guide roller mounting hole. An active groove is formed on the outer wall of the guide roller, which connects the inside of the guide roller with the outside. The active groove is close to the sliding block and extends along the axial direction of the guide roller. A bidirectional lead screw, which is coaxial with the guide roller, has a threaded section at its end that is adapted to the movable groove; A locking device is used to restrict the rotation of the guide rollers; The limiting device includes: A threaded sleeve is fitted onto the threaded section and is threadedly connected to the threaded section. The limiting ring, which is in the shape of a ring, is sleeved on one end of the guide roller. The limiting ring and the threaded sleeve are connected by a fixing rod, which passes through the movable groove and is limited by it.

[0006] The beneficial effects of this invention are as follows: During the initial feeding process of the brushing machine, by rotating the bidirectional lead screw, the threaded section drives the threaded sleeve to move accordingly. Since the threaded sleeve and the limiting ring are connected by a fixed rod, and the fixed rod is limited by the movable groove, the rotation of the bidirectional lead screw will be converted into driving the threaded sleeve and then driving the limiting ring to move axially along the guide roller. The guide roller, because it is restricted by the locking device, will not rotate accordingly. Therefore, by using the axial translation of the limiting ring to a suitable position, the fabric can be limited and corrected by the side of the limiting ring when it is conveyed around the guide roller, avoiding the phenomenon of slippage. When the position of the limiting ring is properly adjusted, the locking device can be released, so that the guide roller can rotate with the traction force of the fabric without affecting the fabric feeding. In fact, the locking device can be additionally equipped with a structure such as a movable buckle, or a tool such as a wrench, pry bar, or screwdriver can be used to assist in locking the guide roller. In short, the guide roller can be temporarily fixed in space when the bidirectional lead screw is rotated. When the locking device is released, because the bidirectional lead screw and the threaded sleeve are in a semi-limited connection, when the guide roller is passively rotated by the fabric, the threaded sleeve rotates under the push of the fixing rod. Its central threaded hole and the threaded section of the bidirectional lead screw are threadedly connected, and the bidirectional lead screw is not spatially restricted in its rotation. Therefore, the threaded sleeve tends to drive the bidirectional lead screw to rotate, causing the bidirectional lead screw to rotate synchronously with the guide roller, preventing jamming. If a different batch of fabric is used, simply rotate the bidirectional lead screw in the opposite direction and readjust the position of the limiting ring. This invention has a clever structure and can be applied to napping machines to control and adjust fabric movement during napping.

[0007] In some extended designs, multiple fixed rods and movable slots are provided between the limiting ring and the threaded sleeve, with the number of fixed rods and movable slots corresponding one-to-one. Utilizing a combination of multiple sets of corresponding fixed rods and movable slots allows for more even and distributed mass distribution, reduces eccentricity, and makes rotation smoother.

[0008] In some extended designs, the support frame is equipped with a vertically extending sliding groove, the sliding block is slidably connected to the sliding groove, and a return spring is connected between the sliding block and the sliding groove to reset the sliding block. During operation, if the fabric shifts, it may generate a vertical component force, pulling on the guide roller. In this extended design, when the guide roller is subjected to such a component force, due to the sliding connection between the sliding block and the sliding groove, the guide roller can tolerate a certain amount of sudden pulling force. That is, the guide roller may shift vertically under the action of the pulling force. After the shifted section of fabric passes, the guide roller can return to its original working position under the action of the return spring. Through this elastic avoidance action, the shifted section of fabric can be flexibly absorbed, preventing the entire machine from jamming.

[0009] In some extended designs, the sliding groove includes a vertical support rod, and the sliding block has a guide hole coaxial with the support rod for the support rod to pass through and slide in connection with it. The return spring is sleeved outside the support rod. This design further refines the connection between the sliding groove and the sliding block, allowing the sliding block to be installed more securely and smoothly, and effectively utilizes the available space to install the return spring, resulting in a more compact structure.

[0010] In some extended designs, a set of axial limiting components is formed by the threaded segment, threaded sleeve, limiting ring, and fixing rod located on the same side of the guide roller. Each side of the guide roller has one set of these axial limiting components, and the structures of these two sets of axial limiting components are mirror-symmetrical to each other. Because of the mirror-symmetrical axial limiting components, the threaded segments on the left and right sides have the same pitch and opposite directions of rotation. Thus, when the bidirectional lead screw is rotated on one side, the limiting rings on both sides can be simultaneously moved towards or separated from the center, enhancing the central symmetry of the structure. Furthermore, a large stroke adjustment of the limiting ring spacing can be completed in a single rotation.

[0011] In some extended designs, a set of vertical damping components is formed by a sliding groove, sliding block, support rod, and return spring located on the same side of the guide roller, with one set of such vertical damping components on each side of the guide roller. Because two sets of vertical damping components are provided, the lifting and lowering movements of both ends of the guide roller are synchronized, which helps maintain the horizontal posture of the guide roller as much as possible, making its up-and-down adaptive adjustment movements more stable.

[0012] In some extended embodiments, the end of the bidirectional lead screw is provided with a handwheel assembly for rotating the bidirectional lead screw. Using the handwheel assembly, the worker can directly and manually operate the rotation of the bidirectional lead screw. This simple structure is suitable for relatively rough working conditions such as sanding on a sanding machine, and is easy and convenient to adjust.

[0013] In some extended embodiments, the handwheel assembly includes: A turntable having opposing left and right sides, the left side being fixedly connected to the end of the bidirectional lead screw; The rotating rod has its left end rotatably connected to the right side of the turntable, and the rotating rod is parallel to the axis of the double-acting screw.

[0014] During operation, the worker holds the rotating rod and makes it rotate around the central axis of the bidirectional lead screw. Since the rotating rod is rotatably connected to the turntable, and the left side of the turntable is fixedly connected to the bidirectional lead screw, the worker can easily drive the bidirectional lead screw to rotate by rotating the rotating rod, thereby adjusting the position of the limit ring.

[0015] In some extended embodiments, the handwheel assembly further includes: A positioning rod hole that passes through both the turntable and the rotating rod and is coaxial with the rotating rod; A positioning rod is inserted into the positioning rod hole, and the left end of the positioning rod protrudes from the left side of the turntable. The right end of the positioning rod is provided with a boss, and a telescopic spring for elastically resetting the positioning rod is sleeved between the boss and the right end face of the rotating rod. A fixing ring is fixedly connected to the right end face of the guide roller through the guide roller mounting hole. The right side of the fixing ring is provided with a number of positioning holes distributed circumferentially around the axis of the bidirectional lead screw. The positioning holes are used for the left end of the positioning rod to be inserted and positioned.

[0016] Since adjusting the position of the limit ring should be done before the machine starts grinding, and after adjustment, it is best to ensure that the bidirectional lead screw and the guide roller are relatively fixed, this extended solution further includes a positioning rod and other devices. During operation, the locking device locks the rotation of the guide roller, the positioning rod is moved to the right to prevent its left end from hitting the fixed ring, and then the rotating rod rotates, driving the bidirectional lead screw to rotate so that the limit ring reaches the appropriate position. After that, the positioning rod is released, and under the action of the telescopic spring, the left end of the positioning rod re-exits the left side of the turntable and inserts into the corresponding positioning hole. Thus, the fixed ring and the turntable are locked through the connection of the positioning rod, thereby achieving the relative fixation of the guide roller and the bidirectional lead screw.

[0017] In some extended embodiments, a long through groove parallel to the axial direction of the rotating rod is formed on the wall of the rotating rod. A guide rod is provided at each end of the long through groove. The guide rod stands on the outside of the rotating rod and is sleeved with a movable frame, so that the movable frame can translate along the axial direction of the guide rod. A connecting rod is obliquely arranged to the right in the long through groove. The two ends of the connecting rod are respectively hinged to the movable frame and the positioning rod, so that when the movable frame translates along the axial direction of the guide rod, it drives the positioning rod to move axially along the positioning rod hole.

[0018] During operation, when the worker grips the rotating rod, the movable frame naturally presses down. Because its freedom of movement is restricted by the guide rod, the movable frame can only move towards the central axis of the rotating rod. This, in turn, pushes the positioning rod to the right via the connecting rod, causing the positioning rod to disengage from the positioning hole, allowing the rotating rod to rotate freely. When the worker releases their hand, the elastic force of the telescopic spring causes the rotating rod to return to its extended leftward position and re-insert into the corresponding positioning hole, fixing the bidirectional lead screw and guide roller relative to each other. The movable frame is then lifted back up. This device simplifies the worker's operation, making the actions of unlocking and rotating, and then relocking, simpler and more seamless. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the guide roller of this utility model; Figure 3 This is a utility model Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 This is a utility model Figure 1 A magnified structural diagram of region B in the middle.

[0020] In the diagram: 1. Support frame; 101. Grinding roller; 102. Guide roller; 103. Rotating shaft; 104. Sliding block; 105. Sliding groove; 106. Support rod; 107. Return spring; 108. Adjusting groove; 109. Adjusting plate; 110. Mounting rod; 111. Threaded rod; 112. Second handwheel; 2. Limiting assembly; 201. Bidirectional lead screw; 202. Threaded sleeve; 203. Fixed rod; 204. Movable groove; 205. Limiting ring; 206. Fixed ring; 207. Turntable; 208. Rotating rod; 209. Positioning rod; 210. Positioning hole; 211. Telescopic spring; 212. Guide rod; 213. Movable frame; 214. Connecting rod. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Reference Figures 1 to 4 Several embodiments of this utility model are given below.

[0026] A sway adjustment device for a sanding machine includes a support frame 1, wherein the support frame 1 is provided with a guide roller 102 rotatable about its own axis, and the sway adjustment device for the sanding machine further includes: A sliding block 104 is connected to the support frame 1. The sliding block 104 is located at one end of the guide roller 102. The sliding block 104 is provided with a guide roller mounting hole coaxial with the guide roller 102. The guide roller 102 is a hollow cylindrical structure. The end of the guide roller 102 is rotatably connected to the guide roller mounting hole. The movable groove 204 is formed on the outer wall of the guide roller 102, so that the interior of the guide roller 102 is connected to the outside. The movable groove 204 is close to the sliding block 104 and extends along the axial direction of the guide roller 102. The bidirectional lead screw 201 is coaxial with the guide roller 102, and the end of the bidirectional lead screw 201 is provided with a threaded section whose position is adapted to the movable groove 204; A locking device is used to restrict the rotation of the guide roller 102; The limiting device includes: Threaded sleeve 202 is fitted onto the threaded section and threadedly connected to the threaded section. The limiting ring 205 is ring-shaped and is sleeved on one end of the guide roller 102. The limiting ring 205 is connected to the threaded sleeve 202 by a fixing rod 203. The fixing rod 203 passes through the movable groove 204 and is limited by it.

[0027] Specifically, the support frame 1 is U-shaped and has two opposing vertical walls, with the space between the walls being the installation positions for each horizontal roller group. (Refer to...) Figure 1 In some embodiments, a polishing roller 101 is provided in the support frame 1, and a guide roller 102 is provided on each of the front and rear sides of the polishing roller. (Refer to...) Figure 2 The guide roller 102 is a hollow cylindrical shape with two ends in the axial direction. Taking its right end as an example, a movable groove 204 is provided on the right end wall of the guide roller 102. The movable groove 204 is a long straight through groove that connects the internal space of the guide roller 102 with the external space.

[0028] In some embodiments, the movable grooves 204 are four in number, evenly distributed around the central circumference of the guide roller 102. Simultaneously, a bidirectional lead screw 201 is inserted into the guide roller 102, positioned coaxially with it. The right end of the bidirectional lead screw 201 has a threaded section, the position of which is adapted to the movable grooves 204. That is, if viewed from the outside through the movable grooves 204, the threaded section can be directly observed centripetally. Of course, the four movable grooves 204 are primarily intended to accommodate the uniform and stable circumferential direction of the limiting ring, but two, three, or other numbers are also acceptable, as long as the corresponding even distribution and the number of fixing rods 203 are compatible.

[0029] In some embodiments, the limiting ring 205 is annular and flat, with its central hole coaxially fitted around the outer periphery of the guide roller 102. The inner periphery of the central hole of the limiting ring 205 is connected to the threaded sleeve 202 via a fixing rod 203, thus forming a component with spokes in the middle, a threaded sleeve 202 at the center, and a limiting ring 205 on the outer periphery. The threaded sleeve 202 is screwed onto the threaded section, and the fixing rod 203 passes through the movable groove 204. Therefore, when the threaded section rotates, due to the connection between the thread and the nut, the threaded sleeve 202 is forced to undergo axial translation rather than rotation, thereby driving the translation of the limiting ring 205. The limiting ring 205 mainly serves to restrict the movement of the fabric and force it to center in a timely manner. Therefore, it does not need to be made into a circular shape, but its outer periphery can be of other shapes, as long as it meets the requirement of interception at the side.

[0030] The rotatable connection between the right end of the guide roller 102 and the guide roller mounting hole can be achieved by fixing a stepped shaft to the right end of the guide roller 102, inserting the stepped shaft into the guide roller mounting hole, and then connecting it through a bearing.

[0031] The locking device can be configured as a movable buckle. For example, a fixed boss can be provided on the support frame, and a pin can be added. By inserting the pin into both the fixed boss and the guide roller 102, the guide roller 102 can be locked. Alternatively, an auxiliary hole can be provided on the guide roller, allowing workers to manually fix the guide roller 102 in place by inserting tools such as screwdrivers into the auxiliary hole. Since the guide roller 102 is not heavy and is supported by bearings, its small-amplitude rotation can be easily restricted manually. When the guide roller 102 is in a relatively fixed spatial position, the rotation of the bidirectional lead screw 201 can only drive the threaded sleeve 202 to translate, and cannot drive other components.

[0032] Furthermore, in some embodiments, threaded sections are provided at both ends of the bidirectional lead screw 201, with the same pitch but opposite directions of rotation. Correspondingly, limit rings 205, threaded sleeves 202, and fixing rods 203 should also be provided at both ends of the guide roller 102. This way, when the bidirectional lead screw 201 rotates, the threaded sleeves 202 on both sides can be driven to move simultaneously, causing the limit rings 205 on both sides to either converge towards the center or separate away from the center. However, if only the limit ring 205 and other mechanisms are retained at one end, and the other end is modified to have a structure where only a bearing supports the guide roller 102, the same technical effect of driving the limit ring 205 to move and thus adjusting the fabric movement can be achieved.

[0033] To facilitate the rotation of the bidirectional lead screw 201, in some embodiments, a handwheel assembly is provided at one end of the bidirectional lead screw 201. More specifically, the right end face of the stepped shaft protrudes beyond the guide roller mounting hole, ensuring it is not obstructed. Then, a fixing ring 206 is fixedly connected to this right end face. After the right end of the bidirectional lead screw 201 passes through the fixing ring 206, it connects to the turntable 207. A rotating rod 208 is rotatably connected to the right side face of the turntable 207. The rotatable connection can be achieved through an internal small ring bearing. In this way, by holding and rotating the rotating rod 208, the turntable 207 can be driven to rotate with relatively little effort, thereby driving the bidirectional lead screw 201 to rotate. Of course, at this time, a locking device should be used to lock the guide roller 102 to prevent it from moving. The rotating rod 208 then functions as a handle. Furthermore, the rotating rod 208 is made hollow, forming a positioning rod hole that also passes through the turntable 207. A positioning rod 209 is then passed through this hole from right to left. The length of the positioning rod 209 is such that its left end protrudes from the left side of the turntable 207, and its right end protrudes from the rotating rod 208. A boss is provided at the right end of the positioning rod 209, and a telescopic spring 211 is installed between the boss and the right end face of the rotating rod 208. This effectively integrates a spring pin within the rotating rod 208. When the positioning rod 209 is pulled to the right, its left end retracts into the turntable 207, not affecting rotation. When the tension on the positioning rod 209 is released, the telescopic spring 211 drives the positioning rod 209 to reset, causing its left end to extend again. Correspondingly, a series of positioning holes 210, each the size of the left end of the positioning rod 209, are provided on the right end face of the fixing ring 206. After the rotating rod 208 has rotated several times and the limiting ring 205 has moved to the appropriate position, the positioning rod 209 is released, and its left end protrudes to the left, naturally inserting into the corresponding positioning hole 210. This relocks the turntable 207 with the fixing ring 206, and also relocks the bidirectional lead screw 201 with the guide roller 102. Therefore, when the guide roller 102 rotates under the traction of the fabric, the bidirectional lead screw 201 will rotate at the same speed, preventing the limiting ring 205 from shifting position. Alternatively, temporary pins or other tools can be used to achieve the above-mentioned function of unlocking during position adjustment and relocking after position confirmation.

[0034] In some embodiments, a long through slot parallel to the axial direction of the rotating rod 208 is formed on the rotating rod 208. Two guide rods 212 are mounted on the outer wall of the rotating rod 208. A movable frame 213 is then provided, with two through holes for the two guide rods 212 to pass through. This allows the movable frame 213 to only translate radially along the rotating rod 208. Then, two parallel connecting rods 214 are provided between the movable frame 213 and the positioning rod 209. The two ends of the connecting rods 214 are hinged to the movable frame 213 and the positioning rod 209, respectively. Furthermore, the length of the connecting rods 214 should be slightly longer than the distance between the movable frame 213 and the positioning rod 209, so that when the movable frame 213 is pressed down, the positioning rod 209 can be pushed to the right via the connecting rods 214. Therefore, with the help of this mechanism, when the worker holds the rotating rod 208, he can simultaneously press down the movable frame 213, causing the positioning rod 209 to move to the right and disengage from the positioning hole 210. After rotating the rotating rod 208 to the desired position, he can release his hand, and under the elastic force of the telescopic spring 211, the positioning rod 209 will reset and be inserted back into the corresponding positioning hole 210, and the movable frame 213 will also rise and reset.

[0035] Of course, to further improve the adjustability of this utility model, in some embodiments, the end connection relationship of the grinding roller 101 can also be improved. Specifically, a vertical adjustment groove 108 is provided on the support frame 1, and an installation rod 110 is vertically installed on the adjustment groove 108. The installation rod 110 is connected to an adjustment plate 109, so that the adjustment plate 109 can slide up and down along the adjustment groove 108 with the installation rod 110 as the guide. The adjustment plate 109 is vertically provided with a second threaded hole, and a threaded rod 111 passes vertically through the second threaded hole and is threadedly connected to it. A second handwheel 112 is provided at the end of the threaded rod 111, and the end of the grinding roller 101 is rotatably connected to the adjustment plate 109. In this embodiment, by controlling the rotation of the second handwheel 112, the threaded rod 111 is rotated, which drives the adjustment plate 109 to rise and fall, thereby adjusting the height of the end of the grinding roller 101.

[0036] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A movement adjustment device for a sanding machine, comprising a support frame (1), wherein the support frame (1) is provided with a guide roller (102) rotatable about its own axis, characterized in that: Also includes: A sliding block (104) is connected to a support frame (1). The sliding block (104) is located at one end of a guide roller (102). The sliding block (104) is provided with a guide roller mounting hole coaxial with the guide roller (102). The guide roller (102) is a hollow cylindrical structure. The end of the guide roller (102) is rotatably connected to the guide roller mounting hole. An active groove (204) is formed on the outer wall of the guide roller (102) to connect the interior of the guide roller (102) with the exterior. The active groove (204) is close to the sliding block (104) and extends along the axial direction of the guide roller (102). A bidirectional lead screw (201) is coaxial with the guide roller (102), and the end of the bidirectional lead screw (201) is provided with a threaded section whose position is adapted to the movable groove (204); A locking device is used to restrict the rotation of the guide roller (102); The limiting device includes: A threaded sleeve (202) is fitted onto the threaded section and threadedly connected to the threaded section. The limiting ring (205) is in the shape of a ring and is sleeved on one end of the guide roller (102). The limiting ring (205) and the threaded sleeve (202) are connected by a fixing rod (203). The fixing rod (203) passes through the movable groove (204) and is limited by it.

2. The movement adjustment device for the sanding machine according to claim 1, characterized in that: Between the limiting ring (205) and the threaded sleeve (202), there are multiple fixed rods (203) and movable grooves (204), and the number of fixed rods (203) and movable grooves (204) corresponds one-to-one.

3. The axial movement adjustment device for the grinding machine according to claim 2, characterized in that: The support frame (1) is provided with a vertically extending sliding groove (105), the sliding block (104) is slidably connected to the sliding groove (105), and a reset spring (107) for resetting the sliding block (104) is connected between the sliding block (104) and the sliding groove (105).

4. The axial movement adjustment device for the grinding machine according to claim 3, characterized in that: The sliding groove (105) is provided with a vertical support rod (106), the sliding block (104) is provided with a guide hole coaxial with the support rod (106) for the support rod (106) to pass through and slide with it, and the reset spring (107) is sleeved outside the support rod (106).

5. The axial movement adjustment device for the sanding machine according to claim 4, characterized in that: The threaded section, threaded sleeve (202), limiting ring (205), and fixing rod (203) located on the same side of the guide roller (102) are used as a set of axial limiting components. Each side of the guide roller (102) is provided with a set of the axial limiting components, and the structures of the two sets of axial limiting components are mirror-symmetrical to each other.

6. The axial movement adjustment device for the grinding machine according to claim 4, characterized in that: A set of vertical damping components is formed by a sliding groove (105), a sliding block (104), a support rod (106), and a reset spring (107) located on the same side of the guide roller (102). A set of the vertical damping components is provided on each side of the guide roller (102).

7. The axial movement adjustment device for the grinding machine according to claim 1, characterized in that: The end of the bidirectional lead screw (201) is provided with a handwheel assembly for rotating the bidirectional lead screw (201).

8. The axial movement adjustment device for the grinding machine according to claim 7, characterized in that: The handwheel assembly includes: A turntable (207) has opposing left and right sides, the left side being fixedly connected to the end of the bidirectional lead screw (201); The rotating rod (208) is rotatably connected to the right side of the turntable (207) at its left end, and the rotating rod (208) is parallel to the axis of the two-way lead screw (201).

9. The axial movement adjustment device for a sanding machine according to claim 8, characterized in that: The handwheel assembly also includes: The positioning rod hole passes through both the turntable (207) and the rotating rod (208) and is coaxial with the rotating rod (208); A positioning rod (209) is inserted into the positioning rod hole, and the left end of the positioning rod (209) extends out of the left side of the turntable (207). The right end of the positioning rod (209) is provided with a boss, and a telescopic spring (211) for elastically resetting the positioning rod (209) is sleeved between the boss and the right end face of the rotating rod (208). A fixing ring (206) is fixedly connected to the right end face of the guide roller (102) through the guide roller mounting hole. The right side of the fixing ring (206) is provided with a number of positioning holes (210) distributed around the axis of the bidirectional lead screw (201). The positioning holes (210) are used for the left end of the positioning rod (209) to be inserted for positioning.

10. The axial movement adjustment device for a sanding machine according to claim 9, characterized in that: The rotating rod (208) has a long through groove parallel to the axial direction of the rotating rod (208) on its wall. A guide rod (212) is provided at each end of the long through groove. The guide rod (212) stands on the outside of the rotating rod (208). The guide rod (212) is sleeved with a movable frame (213) so that the movable frame (213) can be translated along the axial direction of the guide rod (212). A connecting rod (214) is obliquely arranged to the right in the long through groove. The two ends of the connecting rod (214) are respectively hinged to the movable frame (213) and the positioning rod (209) so that when the movable frame (213) is translated along the axial direction of the guide rod (212), it drives the positioning rod (209) to move axially along the positioning rod hole.

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