Sanding machine capable of automatically adjusting height of fixed thickness roller

Abstract

The utility model discloses a sander capable of automatically adjusting the height of a thickness determining roller. The sander comprises a main transmission roller, shaft bodies are arranged at the two ends of the thickness fixing roller; the abrasive belt is wound on the thickness fixing roller and the main transmission roller; the driving motor drives the main transmission roller to rotate; the height adjusting module comprises two groups of worm and gear assemblies which are respectively arranged at the two ends of the thickness determining roller, and comprises eccentric worm gears which are arranged on the outer side of the shaft body in a sleeving manner and are rotationally connected with the shaft body; the adjusting worm is meshed with the eccentric worm gear; the driving module is in transmission connection with one worm and gear assembly; the linkage mechanism is connected between the two worm and gear assemblies; the current detection element detects the current of the driving motor to generate a current signal; and the PLC is used for receiving the current signal of the current detection element and controlling the driving module to act according to the current signal. According to the sanding machine capable of automatically adjusting the height of the fixed thickness roller, the height of the fixed thickness roller is automatically adjusted, and the problem of low efficiency caused by frequent shutdown is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sanding machines, in particular to a sanding machine with a thickness-fixing roller capable of automatically adjusting the height thereof. Background Art

[0002] Sanding machines are mainly used for sanding wood. When sanding wood, the wood is first fed in, and then the brush is used to clean the remaining sawdust on the surface of the wood. The sanding belt is driven by the movement of the thickness roller and the main drive roller to sand the wood.

[0003] However, the height of the thickness-setting roller of the existing sanding set is generally pre-adjusted, so that the spacing between the thickness-setting roller and the conveying table is a fixed spacing, so that it can just sand the board of preset thickness. When the thickness of the wood conveyed from the conveying table becomes thicker, it will get stuck during the sanding operation due to the excessive thickness, and finally cause the machine to freeze.

[0004] When the machine jams, the staff needs to manually adjust the two ends of the thickness roller so that thicker wood can pass through. The height adjustment structure of the thickness roller is disclosed in Patent No. 2009201677220.

[0005] Although the above-mentioned structural method can adjust the height of the thickness roller, it can only be adjusted after the machine is stuck. When the thickness of the conveyed plate changes, the machine will often get stuck. In this way, it is necessary to stop and manually adjust the thickness roller every time, which not only consumes a lot of time and affects production efficiency, but also frequently causes the machine to get stuck, which will affect the performance of the entire sanding machine and the service life of the sanding machine.

[0006] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] The utility model aims at the above-mentioned technical problems existing in the sanding machine in the prior art and proposes a novel sanding machine with automatic height adjustment of the thickness-setting roller, so that the height of the thickness-setting roller can be automatically adjusted when the machine is about to get stuck, thereby ensuring the normal operation of the machine and avoiding the problem of low production efficiency caused by frequent shutdowns.

[0008] In order to achieve the above utility model / design purpose, the utility model adopts the following technical solutions:

[0009] A sanding machine with automatic height adjustment of the thickness roller,

[0010] Main drive roller;

[0011] A thickness calibrating roller, with shaft bodies arranged at both ends;

[0012] A sanding belt, wound around the thickness setting roller and the main driving roller;

[0013] A driving motor is used to drive the main driving roller to rotate, so that the abrasive belt can move between the main driving roller and the thickness-setting roller, and a plate conveying space is formed between the abrasive belt and the conveying platform located below the abrasive belt;

[0014] Height adjustment module, including:

[0015] The worm gear assembly is provided with two groups, which are arranged at both ends of the thickness-setting roller respectively, and includes:

[0016] An eccentric worm wheel is sleeved on the outside of the shaft body and is rotatably connected to the shaft body;

[0017] An adjusting worm, meshing with the eccentric worm wheel;

[0018] A drive module is drivingly connected to one of the worm gear assemblies;

[0019] A linkage mechanism, connected between the two sets of worm gear assemblies, for transmitting the power of the drive module to the worm gear assembly far away from the drive module so that the two eccentric worm gears rotate synchronously;

[0020] A current detection element is used to detect the current of the driving motor;

[0021] The PLC controller communicates with the current detection element and the driving module, receives the current signal of the current detection element and controls the action of the driving module according to the current signal.

[0022] In some embodiments of the present application, the adjusting worm comprises:

[0023] A worm body, on which worm gear matching teeth are formed for meshing with the worm gear;

[0024] And transmission matching teeth arranged on the worm body.

[0025] In some embodiments of the present application, the driving module includes:

[0026] Adjust the motor;

[0027] and a planetary reducer drivingly connected to the regulating motor;

[0028] A worm gear reducer, drivingly connected to the planetary reducer;

[0029] A power output shaft is connected to the output end of the worm gear reducer, and a power tooth matched with the transmission matching tooth portion is arranged on the power output shaft.

[0030] In some embodiments of the present application, the linkage mechanism includes:

[0031] There are two linkage shafts, which are arranged at the two ends of the thickness-setting roller respectively, and a first linkage matching tooth that matches the transmission matching tooth is formed above the linkage shafts;

[0032] and a second linkage mating tooth disposed at an end thereof;

[0033] The synchronous shaft has synchronous matching teeth formed at both ends, and the synchronous matching teeth at both ends are respectively meshed with the second linkage matching teeth at the corresponding ends.

[0034] In some embodiments of the present application, a worm gear box is further included, the worm gear assembly is arranged in the worm gear box, the linkage shaft is vertically inserted in the worm gear box and meshes with the transmission mating teeth through the first linkage mating teeth, and the second linkage mating teeth at its end extend out from the worm gear box.

[0035] In some embodiments of the present application, the power output shaft is vertically inserted into the worm gear box and meshes with the transmission matching teeth through power teeth.

[0036] In some embodiments of the present application, the eccentric worm gear is rotatably connected to the shaft body via a bearing.

[0037] In some embodiments of the present application, there are also two mounting covers, which are respectively mounted on the worm gear boxes located at both ends of the thickness-fixing roller, and both ends of the synchronization shaft are rotatably connected to the mounting covers.

[0038] Compared with the prior art, the advantages and positive effects of the utility model are:

[0039] The sanding machine proposed by the utility model obtains the actual load size of the driving motor by detecting the driving current of the driving motor, determines whether the conveyed plate exceeds the preset thickness according to the load size of the driving motor, and can control the driving module when it is obtained that the plate exceeds the preset thickness, and drives the worm gear assembly to move through the action of the driving module, so that the action of the eccentric worm gear drives the height position of the thickness roller to change, thereby realizing automatic adjustment of the height position of the thickness roller, so that when conveying a plate exceeding the preset thickness, the height of the thickness roller can be adjusted in advance before the plate is stuck in the machine, effectively avoiding the problem of the sanding machine freezing due to the thickness of the conveyed plate exceeding the preset thickness during the plate conveying process, avoiding the problem of frequent adjustment of the thickness roller due to the time consumption and low production efficiency caused by the machine stopping due to the jamming of the plate, and also avoiding the problem of damage to the overall performance of the sanding machine due to frequent jams.

[0040] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a three-dimensional structural diagram of an embodiment of a sanding machine with automatic height adjustment of a thickness-fixing roller proposed by the utility model;

[0043] Figure 2 This is a front view of an embodiment of a sanding machine with automatic height adjustment of a thickness-fixing roller proposed by the utility model;

[0044] Figure 3 for Figure 2 AA section view;

[0045] Figure 4 for Figure 2 BB section view;

[0046] Figure 5 It is a cross-sectional view of the internal structure of an embodiment of a sanding machine with automatic height adjustment of the thickness roller of the utility model;

[0047] Figure 6 A cross-sectional view of the matching structure of the worm gear assembly of an embodiment of a sanding machine with automatic height adjustment of the thickness roller of the utility model;

[0048] Figure 7 The utility model is a schematic diagram of the structure of the linkage shaft of an embodiment of a sanding machine with automatic height adjustment of the thickness roller.

[0049] In the figure, 100, thickness-fixing roller; 110, shaft body; 200, worm gear assembly; 210, eccentric worm gear; 220, adjusting worm; 221, worm body; 222, worm gear matching teeth; 223, transmission matching teeth; 300, drive module; 310, adjusting motor; 320, planetary reducer; 330, worm gear reducer; 400, linkage mechanism; 410, linkage shaft; 411, first linkage matching teeth; 412, second linkage matching teeth; 420, synchronous shaft; 421, synchronous matching teeth; 500, power output shaft; 600, worm gear box; 700, bearing; 800, installation cover. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present invention.

[0052] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the implementation method, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0054] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0055] The utility model provides an embodiment of a sanding machine with automatic height adjustment of a thickness-setting roller, which comprises:

[0056] Main drive roller;

[0057] The thickness calibrating roller 100 has shaft bodies 110 at both ends thereof;

[0058] A sanding belt, wound around the thickness-setting roller 100 and the main driving roller;

[0059] A driving motor, used to drive the main driving roller to rotate, so that the abrasive belt can move between the main driving roller and the thickness setting roller 100;

[0060] The sanding machine comprises a conveying platform, which is used to convey the wooden board that needs to be sanded. The conveying platform can adopt the conveying bed structure in the prior art.

[0061] The calibrating roller 100 is arranged above the conveying platform, and the distance between the calibrating roller 100 and the conveying platform is adapted to the thickness of the plate, so as to ensure that the calibrating roller 100 can sand the plate through the sanding belt above it when rotating.

[0062] The abrasive belt is wound around the main drive roller and the thickness-fixing roller 100. When the driving motor rotates, the main drive roller can be driven to rotate, and then the thickness-fixing roller 100 connected to the main drive roller can be driven to rotate, so that the abrasive belt wound around the two can move back and forth.

[0063] Since the sanding belt is wound around the thickness-setting roller 100 , if the height of the thickness-setting roller 100 changes, the position of the sanding belt will change, so that the sanding belt can be used to sand wood with different thicknesses.

[0064] Normally, the height of the thickness calibrating roller 100 is pre-adjusted and set, so the distance between the thickness calibrating roller 100 and the conveying platform is also fixed, and the thickness calibrating roller 100 can only convey plates of preset thickness during conveying.

[0065] If the thickness of the conveyed plate increases, that is, the thickness of the plate is greater than the distance between the thickness roller 100 and the conveying platform, when it enters the position between the thickness roller 100 and the conveying platform, the friction between the thickness roller 100 and the conveying platform will be too great due to the excessive thickness and the sanding belt, causing the drive motor to get stuck. At this time, the height of the thickness roller 100 needs to be adjusted.

[0066] In some embodiments of the present application, in order to realize automatic adjustment of the height of the thickness-setting roller 100, a height adjustment module is provided, including:

[0067] The worm gear assembly 200 is provided with two groups, which are arranged at both ends of the thickness-setting roller 100 respectively, and includes:

[0068] An eccentric worm wheel 210 is sleeved outside the shaft body 110 and is rotatably connected to the shaft body 110;

[0069] An adjusting worm 220 meshing with the eccentric worm wheel 210;

[0070] When the adjusting worm 220 rotates, it can drive the eccentric worm wheel 210 matched with it to rotate synchronously. Since the worm wheel is eccentric and is rotatably connected to the shaft body 110 at the end of the thickness-fixing roller 100, when the eccentric worm wheel 210 rotates, it will exert force on the shaft body 110 and then drive the thickness-fixing roller 100 connected to the shaft body 110 to move up and down in the height direction to adjust the height position of the thickness-fixing roller 100. After the height of the thickness-fixing roller 100 changes, the distance between it and the conveying platform changes, so that it can adapt to the thickness of the plate.

[0071] A driving module 300 is drivingly connected to one of the worm gear assemblies 200;

[0072] The driving module 300 is used to provide power to the worm gear assembly 200, driving the adjusting worm 220 in the worm gear assembly 200 to rotate automatically, and then driving the eccentric worm wheel 210 to rotate to realize automatic rotation adjustment, without manual adjustment, thus realizing automatic adjustment.

[0073] The linkage mechanism 400 is connected between the two sets of worm gear assemblies 200 and is used to transmit the power of the driving module 300 to the worm gear assembly 200 far away from the driving module 300 so that the two eccentric worm gears 210 rotate synchronously;

[0074] The linkage mechanism 400 is used to connect the two groups of worm gear assemblies 200 to ensure that when the driving module 300 is in motion, the worm gear assemblies 200 located at both ends of the thickness-setting roller 100 can be linked and synchronously moved to ensure synchronous adjustment of the two ends of the thickness-setting roller 100, thereby ensuring the accuracy of the adjustment of the thickness-setting roller 100.

[0075] A current detection element is used to detect the current of the driving motor;

[0076] In some embodiments of the present application, the current detection element is a current detection sensor or a current detection device, such as an ammeter.

[0077] The PLC controller communicates with the current detection element and the driving module 300 , receives the current signal of the current detection element and controls the operation of the driving module 300 according to the current signal.

[0078] The PLC controller is mainly used to receive the driving current signal of the driving motor detected by the circuit detection element.

[0079] The PLC controller has a current preset value pre-stored therein, and the circuit preset value matches the specification of the drive motor. In some embodiments, the current preset value is 60A.

[0080] When it is detected that the driving current of the driving motor is greater than the preset current value, it means that the friction between the thickness roller 100 and the abrasive belt is large, and the load of the driving motor is large. At this time, the machine may get stuck. At this time, the PLC controller can send a signal to the driving module 300. The driving module 300 drives the worm gear assembly 200 to move, and the height position of the thickness roller 100 is adjusted by rotating the eccentric worm gear 210 to ensure that it will not get stuck during the plate conveying process.

[0081] When it is detected that the driving current of the driving motor is less than the preset current value, it means that the load of the driving motor is normal. At this time, the PLC controller does not send a control signal, and the thickness setting roller 100 can maintain the initial preset height position for operation.

[0082] The sanding machine in this embodiment obtains the actual load size of the driving motor by detecting the driving current of the driving motor, and determines whether the conveyed plate exceeds the preset thickness according to the load size of the driving motor.

[0083] When it is detected that the thickness of the plate exceeds the preset thickness, the driving module 300 can be controlled, and the worm gear assembly 200 can be driven to move through the action of the driving module 300, thereby causing the eccentric worm gear 210 to drive the height position of the thickness roller 100 to change, thereby realizing automatic adjustment of the height position of the thickness roller 100, so that when conveying a plate exceeding the preset thickness, the height of the thickness roller 100 can be adjusted in advance before the plate gets stuck in the machine, effectively avoiding the problem of the sanding machine freezing due to the thickness of the conveyed plate exceeding the preset thickness during the plate conveying process, avoiding the problem of frequent adjustment of the thickness roller 100 due to the jamming of the plate, which consumes a lot of time and reduces production efficiency, and also avoiding the problem of damage to the overall performance of the sanding machine due to frequent jams.

[0084] In some embodiments of the present application, the adjusting worm 220 includes:

[0085] A worm body 221, on which worm gear matching teeth 222 are formed for meshing with the eccentric worm gear 210;

[0086] And the transmission matching teeth 223 are arranged on the worm body 221.

[0087] When arranged, the worm gear matching teeth 222 are arranged on the outer side wall of the worm body 221 and arranged along the circumference of the worm body 221, and mesh with the eccentric worm gear 210;

[0088] When configured, the worm gear mating teeth 222 may be arranged at a middle position of the worm body 221 .

[0089] The transmission engagement teeth 223 are arranged at an end position close to the worm body 221 .

[0090] The transmission matching teeth 223 are transmission matching helical teeth arranged along the circumference of the worm body 221 .

[0091] In some embodiments of the present application, the driving module 300 includes:

[0092] Adjusting motor 310;

[0093] and a planetary reducer 320 drivingly connected to the regulating motor 310;

[0094] A worm gear reducer 330 is drivingly connected to the planetary reducer 320;

[0095] The power output shaft 500 is connected to the output end of the worm gear reducer 330 , and a power tooth that cooperates with the transmission matching tooth 223 is provided on the power output shaft 500 .

[0096] The regulating motor 310 may be a servo motor.

[0097] The planetary reducer 320 is used to be connected to the output end of the servo motor. The servo motor rotates to transmit power to the planetary reducer 320 connected and matched thereto.

[0098] The principle of the planetary reducer 320 is mainly to use the speed converter of the gear to reduce the number of revolutions of the motor to the desired number of revolutions and obtain a mechanism with a larger torque to ensure that there is a larger torque when it is transmitted to the worm gear assembly 200, ensuring that the eccentric worm gear 210 can drive the thickness roller 100 to move up and down.

[0099] The planetary reducer 320 may adopt the existing planetary reducer 320 structure in the prior art, which will not be described in detail here.

[0100] The output end of the planetary reducer 320 is connected to the worm gear reducer 330 , and the worm gear reducer 330 is connected to the power output shaft 500 to transmit power to the power output shaft 500 .

[0101] Specifically, a power tooth is provided on the power output shaft 500 , which meshes with the transmission matching tooth 223 of the adjusting worm 220 . When the power output shaft 500 rotates, the adjusting worm 220 is driven to rotate, and the power is transmitted to the adjusting worm 220 .

[0102] In some embodiments of the present application, the linkage mechanism 400 includes:

[0103] There are two linkage shafts 410, which are arranged at both ends of the thickness-setting roller 100, and a first linkage matching tooth 411 matching with the transmission matching tooth 223 is formed above the linkage shafts 410;

[0104] and a second linkage mating tooth 412 arranged at an end thereof;

[0105] The synchronous shaft 420 has synchronous matching teeth 421 formed at both ends, and the synchronous matching teeth 421 at both ends are respectively meshed with the second linkage matching teeth 412 at the corresponding ends.

[0106] Two linkage shafts 410 are provided, which are used to cooperate with the adjusting worm 220 and the synchronization shaft 420 respectively.

[0107] Specifically, one of the linkage shafts 410 is arranged on the driving module 300 side, and is meshed with the transmission matching teeth 223 on the adjusting worm 220 through the upper first linkage matching teeth 411 .

[0108] The first linkage matching teeth 411 are first linkage matching helical teeth formed on the linkage shaft 410 .

[0109] The second linkage matching teeth 412 are second linkage matching spur teeth formed at the end of the linkage shaft 410 .

[0110] The synchronous shaft 420 is used to link the two linkage shafts 410. The synchronous matching teeth on the upper side of the synchronous shaft 420 are synchronous matching spur teeth, which are respectively meshed with the second linkage matching spur teeth on the linkage shafts 410 at both ends.

[0111] When the driving module 300 is in motion, it will drive the adjusting worm 220 on the same side to rotate, and the adjusting worm 220 on the same side will drive the interlocking shaft 410 meshing with it to rotate. Since the interlocking shaft 410 and the synchronous shaft 420 are meshing, the synchronous shaft 420 will drive the interlocking shaft 410 at the other end to rotate, and then drive the adjusting worm 220 on the other side that cooperates with the interlocking shaft 410 to rotate, driving the eccentric worm wheel 210 to rotate, thereby realizing the synchronous adjustment action of the worm gear assemblies 200 on both sides.

[0112] In some embodiments of the present application, there are also two worm gear boxes 600 arranged at both ends of the thickness-fixing roller 100 , and the two groups of worm gear assemblies 200 are respectively arranged in the two worm gear boxes 600 .

[0113] The linkage shaft 410 is vertically inserted into the worm gear box 600 and meshes with the transmission matching teeth 223 through the first linkage matching teeth 411 , and the second linkage matching teeth 412 at the end thereof protrude from the worm gear box 600 .

[0114] The linkage shaft 410 extends into the worm gear box 600 to cooperate with the adjusting worm 220 through the first linkage matching tooth 411.

[0115] A portion of the worm gear extends out from the worm gear box 600 to ensure that the second linkage matching tooth 412 above the worm gear can be matched with the synchronization shaft 420 .

[0116] In some embodiments of the present application, the power output shaft 500 is vertically inserted into the worm gear box 600 and meshes with the transmission matching teeth 223 through power teeth.

[0117] When arranged, the power output shaft 500 is partially located inside the worm gear box 600 so that the power teeth above it can cooperate with the adjusting worm 220, and is partially located outside the worm gear box 600 to be connected to the worm gear reducer 330.

[0118] In some embodiments of the present application, the eccentric worm gear 210 is rotatably connected to the shaft body 110 via a bearing 700 .

[0119] The bearing 700 is assembled on the eccentric worm gear 210 and sleeved on the shaft body 110 .

[0120] In order to limit the bearing 700 , a bearing 700 limiting portion for limiting the two ends of the bearing 700 is formed on the eccentric worm wheel 210 to limit the bearing 700 axially.

[0121] In some embodiments of the present application, there are also two mounting covers 800 , which are respectively mounted on the worm gear boxes 600 located at both ends of the thickness-fixing roller 100 , and both ends of the synchronization shaft 420 are rotatably connected to the mounting covers 800 .

[0122] A rotating bearing 700 is disposed in the installation cover 800 , and the synchronization shaft 420 is rotatably connected to the installation cover 800 via the rotating bearing 700 .

[0123] The synchronous shaft 420 can be supported and loaded by installing the cover 800 .

[0124] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A sanding machine with automatic height adjustment of the thickness roller, characterized in that: include: Main drive roller; A thickness calibrating roller, with shaft bodies arranged at both ends; A sanding belt, wound around the thickness setting roller and the main driving roller; A driving motor is used to drive the main driving roller to rotate so that the abrasive belt can move between the main driving roller and the thickness setting roller; Height adjustment module, including: The worm gear assembly is provided with two groups, which are arranged at both ends of the thickness-setting roller respectively, and includes: An eccentric worm wheel is sleeved on the outside of the shaft body and is rotatably connected to the shaft body; An adjusting worm, meshing with the eccentric worm wheel; A drive module is drivingly connected to one of the worm gear assemblies; A linkage mechanism, connected between the two sets of worm gear assemblies, for transmitting the power of the drive module to the worm gear assembly far away from the drive module so that the two eccentric worm gears rotate synchronously; A current detection element, used for detecting the current of the driving motor and generating a current signal; The PLC controller communicates with the current detection element and the driving module, receives the current signal of the current detection element and controls the action of the driving module according to the current signal.

2. The sanding machine with automatic adjustment of the thickness roller height according to claim 1, characterized in that: The adjusting worm comprises: A worm body, on which worm gear matching teeth are formed for meshing with the worm gear; And transmission matching teeth arranged on the worm body.

3. The sanding machine with automatic height adjustment of the thickness roller according to claim 2, characterized in that: The driving module includes: Adjust the motor; and a planetary reducer drivingly connected to the regulating motor; A worm gear reducer, drivingly connected to the planetary reducer; A power output shaft is connected to the output end of the worm gear reducer, and a power tooth matched with the transmission matching tooth portion is arranged on the power output shaft.

4. The sanding machine with automatic adjustment of the thickness roller height according to claim 3, characterized in that: The linkage mechanism comprises: There are two linkage shafts, which are arranged at the two ends of the thickness-setting roller respectively, and a first linkage matching tooth that matches the transmission matching tooth is formed above the linkage shafts; and a second linkage mating tooth disposed at an end thereof; The synchronous shaft has synchronous matching teeth formed at both ends, and the synchronous matching teeth at both ends are respectively meshed with the second linkage matching teeth at the corresponding ends.

5. The sanding machine with automatic height adjustment of the thickness roller according to claim 4, characterized in that: It also includes a worm gear box, the worm gear assembly is arranged in the worm gear box, the linkage shaft is vertically inserted in the worm gear box and meshes with the transmission matching teeth through the first linkage matching teeth, and the second linkage matching teeth at its end extend out of the worm gear box.

6. The sanding machine with automatic adjustment of the thickness roller height according to claim 5, characterized in that: The power output shaft is vertically inserted into the worm gear box and meshes with the transmission matching teeth through the power teeth.

7. The sanding machine with automatic adjustment of the thickness roller height according to claim 1, characterized in that: The eccentric worm gear is rotatably connected to the shaft body via a bearing.

8. The sanding machine with automatic adjustment of the thickness roller height according to claim 4, characterized in that: It also includes two installation covers, which are respectively assembled on the worm gear boxes located at the two ends of the thickness-fixing roller, and the two ends of the synchronization shaft are rotatably connected to the installation covers.

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