Grinding machine with abrasive paper convenient to replace

Abstract

The utility model discloses a dull polish machine convenient to replace abrasive paper, and relates to the technical field of dull polish machines, the dull polish machine comprises a bottom plate, a triangular plate A and a triangular plate B are respectively arranged on one side of the top of the bottom plate, and a sliding groove is formed in the top surface of the bottom plate. According to the grinding machine facilitating abrasive paper replacement, through the sliding separation design of a triangular plate A and a triangular plate B, the rapid abrasive paper replacement function is achieved, fixing of the triangular plate B in a sliding groove is relieved by unscrewing a nut, the triangular plate B horizontally slides to enable a first sleeve to be separated from a transmission cylinder, and abrasive paper tension is automatically released; the problem that a traditional belt sander is difficult to replace due to high tensioning force is solved, the abrasive paper replacing efficiency is improved, the abrasive paper tension self-adaption function is achieved through the adjusting structure design of a B fixing shaft and a longitudinal sliding groove, the B fixing shaft is fixed by selecting threaded holes of different heights through a threaded bolt, the tensioning degree of abrasive paper is controlled by adjusting the longitudinal position of a second sleeve, and the abrasive paper replacing efficiency is improved. And the requirement for replacement of abrasive paper with different abrasion degrees is met, and operation convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to abrasive machine technical field, concretely is a kind of abrasive machine of sandpaper convenient to replace. BACKGROUND

[0002] Abrasive belt machine is a common metal and non-metal material processing equipment, mainly used for material grinding and cutting. It works based on the grinding and cutting principle of abrasive belt, and realizes the grinding and finishing of workpiece through the rotation and friction of abrasive belt.

[0003] In the prior art, such as the patent number: CN219582471U, a constant force abrasive belt machine is disclosed, which comprises an abrasive belt machine, a constant force actuator is installed on the left side of the abrasive belt machine, the abrasive belt machine comprises a driving wheel, the constant running speed of the abrasive belt machine is ensured by the cooperation of the electronic proportional valve and the assembly in the abrasive belt machine, the two work together and restrict each other, the relative position of the adjusting cylinder in the fixed housing is adjusted by the sliding plate sliding in the sliding rail, the connecting block slides in the sliding groove of the limiting block, the sliding stroke of the connecting block is limited, and the displacement amount of the sliding plate in the fixed housing is controlled.

[0004] Although the above-mentioned patent greatly improves the adjustment efficiency compared with the conventional manual adjustment of the abrasive wheel speed, the sandpaper of the abrasive belt machine is in the form of a belt and is sleeved on the surface of the supporting roller. However, in order to improve the friction between the sandpaper and the supporting roller, the tension of the abrasive belt is very large, which makes it difficult for the abrasive belt to separate from the supporting roller, affecting the replacement. Moreover, when the parts are being polished, the contact pressure between the parts and the surface of the abrasive belt cannot be controlled, affecting the polishing quality.

[0005] Therefore, the utility model provides an abrasive machine convenient for replacing sandpaper. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides an abrasive machine convenient for replacing sandpaper, which solves the problem that the sandpaper of the abrasive belt machine is in the form of a belt and is sleeved on the surface of the supporting roller. However, in order to improve the friction between the sandpaper and the supporting roller, the tension of the abrasive belt is very large, which makes it difficult for the abrasive belt to separate from the supporting roller, affecting the replacement. Moreover, when the parts are being polished, the contact pressure between the parts and the surface of the abrasive belt cannot be controlled, affecting the polishing quality.

[0007] In order to achieve the above object, the utility model discloses a sanding machine convenient to replace abrasive paper through the following technical schemes, a sanding machine convenient to replace abrasive paper, including bottom plate, the one side of bottom plate top is provided with A triangle board and B triangle board respectively, the top surface of bottom plate is opened with the sliding slot, the bottom of B triangle board is connected with the inside of sliding slot through the horizontal sliding block, the first acute angle of B triangle board is fixedly connected with A fixed axle, the surface of A fixed axle is connected with the first sleeve through A bearing bush, the right angle of A triangle board and B triangle board is all opened with longitudinal sliding slot, the inside of longitudinal sliding slot is slidably connected with B fixed axle, the surface of B fixed axle is connected with the second sleeve through B bearing bush,

[0008] The both ends of B fixed axle are provided with positioning disc, the inside of positioning disc both sides is screwed through with threaded bolt, the both sides of longitudinal sliding slot are opened with a plurality of threaded holes from top to bottom in order, the both sides of B triangle board bottom are all fixedly connected with positioning block, the top of positioning block is provided with nut.

[0009] The one side of bottom plate top is fixedly connected with servo motor, the output of servo motor is fixedly connected with transmission cylinder through the corner of A triangle board, the other corner of A triangle board is opened with first rotation hole, the corner of B triangle board is opened with second rotation hole, the one end of A fixed axle is inserted into the inside of first rotation hole, the one end of transmission cylinder is inserted into the inside of second rotation hole, the top of B triangle board is provided with support plate, the surface of support plate is provided with electric push rod, the output of electric push rod is provided with clamping mechanism, the bottom of clamping mechanism is provided with guide roller, the inside of guide roller is provided with pressure sensor, the surface of support plate is provided with controller, the first sleeve, second sleeve and transmission cylinder are distributed in triangle and are all connected with abrasive paper.

[0010] Preferably, the positioning block is threadedly connected with the nut, and the nut is screwed to press the surface of the bottom plate to adjust the sliding resistance of the B triangle plate in the sliding slot.

[0011] Preferably, the pressure sensor is electrically connected with the controller through wires, and the controller controls the lifting stroke of the electric push rod through a signal line.

[0012] Preferably, the threaded bolt penetrates the both sides of the positioning disc and is threadedly connected with the threaded holes on the both sides of the longitudinal sliding slot, and the B fixed axle is fixed at different height positions of the longitudinal sliding slot through the threaded bolt.

[0013] Preferably, the rolling direction of the guide roller is parallel to the transmission direction of the abrasive paper, and the moving track of the clamping mechanism is perpendicular to the transmission plane of the abrasive paper.

[0014] Preferably, the axes of the first sleeve, the second sleeve and the transmission cylinder lie in the same plane, and the abrasive paper forms a closed loop transmission path by the friction force of the sleeve surface. Advantages

[0015] The utility model provides a sanding machine convenient to change abrasive paper, has the following advantages compared with prior art:

[0016] 1. The sanding machine convenient to change abrasive paper, through the sliding separation design of A triangular board and B triangular board, realizes the quick change function of abrasive paper, through unscrewing the nut to remove the fixation of B triangular board in the sliding slot, horizontal sliding B triangular board makes first sleeve and transmission cylinder separate, and the abrasive paper tension is automatically released, the problem that the traditional sanding machine is difficult to change due to high tension is solved, the abrasive paper change efficiency is improved, the adjusting structure design of B fixed axle and longitudinal sliding slot realizes the self -adaptation function of abrasive paper tension, selects the threaded hole of different height fixed B fixed axle through threaded bolt, adjusts the longitudinal position of second sleeve to control the tension of abrasive paper, adapts the abrasive paper change demand of different wear degree, and the operation convenience is improved.

[0017] 2. The sanding machine convenient to change abrasive paper, through the linkage control design of pressure sensor and controller, realizes the accurate adjustment function of polishing pressure, when the guide roller contacts the surface of abrasive paper, the pressure sensor detects pressure data in real time and feeds back to the controller, and the controller automatically adjusts the lifting stroke of electric push rod to control the contact pressure of clamping mechanism, solves the problem that manual pressure adjustment is not accurate, and the polishing yield is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional appearance schematic view of the utility model;

[0019] Figure 2 It is the three-dimensional appearance schematic view of A triangular board and B triangular board of the utility model;

[0020] Figure 3 It is the three-dimensional appearance schematic view of limiting disc and threaded bolt of the utility model;

[0021] Figure 4 It is the three-dimensional appearance schematic view of guide roller of the utility model;

[0022] Figure 5 It is the three-dimensional appearance schematic view of clamping mechanism of the utility model.

[0023] In the figure: 1, bottom plate; 2, A triangular plate; 3, B triangular plate; 4, sliding groove; 5, sliding block; 6, A fixed shaft; 7, first sleeve; 8, sliding groove; 9, B fixed shaft; 10, second sleeve; 11, positioning disc; 12, threaded bolt; 13, threaded hole; 14, positioning block; 15, nut; 16, servo motor; 17, transmission cylinder; 18, first rotating hole; 19, second rotating hole; 20, support plate; 21, electric push rod; 22, clamping mechanism; 23, guide roller; 24, pressure sensor; 25, controller; 26, sandpaper. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] The utility model provides two technical schemes:

[0026] Figures 1-5 The first embodiment is shown: a sanding machine convenient for replacing sandpaper, including bottom plate 1, one side of the top of bottom plate 1 is provided with A triangular plate 2 and B triangular plate 3 respectively, the top surface of bottom plate 1 is provided with sliding groove 4, the bottom of B triangular plate 3 is connected to the inside of sliding groove 4 by horizontal sliding block 5, the first acute angle of B triangular plate 3 is fixedly connected with A fixed shaft 6, the surface of A fixed shaft 6 is provided with first sleeve 7 through A bearing, the right angle of A triangular plate 2 and B triangular plate 3 is provided with longitudinal sliding groove 8, B fixed shaft 9 is slidably connected in the inside of longitudinal sliding groove 8, the surface of B fixed shaft 9 is provided with second sleeve 10 through B bearing, the both ends of B fixed shaft 9 are provided with positioning disc 11, the inside of the both sides of positioning disc 11 is threadedly penetrated with threaded bolt 12, a plurality of threaded holes 13 are sequentially and equidistantly provided from top to bottom on the both sides of longitudinal sliding groove 8, the both sides of the bottom of B triangular plate 3 are fixedly connected with positioning block 14, the top of positioning block 14 is provided with nut 15, A triangular plate 2 is fixed on one side of the top of bottom plate 1, B triangular plate 3 is slidably connected on the other side through sliding groove 4, B triangular plate 3 moves horizontally in sliding groove 4 through sliding block 5, A fixed shaft 6 is welded at the first acute angle of B triangular plate 3, A fixed shaft 6 is provided with first sleeve 7 through A bearing.

[0027] Specifically, the top of the base plate 1 is fixed on one side with an A triangular plate 2, and is connected on the other side with a B triangular plate 3 through a sliding groove 4. The bottom of the B triangular plate 3 moves horizontally in the sliding groove 4 through a sliding block 5. An A fixed shaft 6 is welded at the first acute angle of the B triangular plate 3. The A fixed shaft 6 is connected with a first sleeve 7 through an A bearing sleeve. A longitudinal sliding groove 8 is formed at the right angle of the A triangular plate 2 and the B triangular plate 3. A B fixed shaft 9 is connected in the longitudinal sliding groove 8 and is connected with a second sleeve 10 through a B bearing sleeve. The B fixed shaft 9 is installed with a positioning disc 11 at both ends. The positioning disc 11 is fixed with the longitudinal sliding groove 8 through a threaded bolt 12 and threaded holes 13 on both sides. The quick release and reset of the tension of the sandpaper 26 is realized through the sliding separation of the A triangular plate 2 and the B triangular plate 3 and the longitudinal adjustment of the B fixed shaft 9. The sandpaper 26 replacement time is shortened.

[0028] In the embodiment, the top of the base plate 1 is fixedly connected on one side with a servo motor 16. The output end of the servo motor 16 is fixedly connected with a transmission cylinder 17 at one corner of the A triangular plate 2. A first rotating hole 18 is formed at the other corner of the A triangular plate 2. A second rotating hole 19 is formed at one corner of the B triangular plate 3. One end of the A fixed shaft 6 is inserted into the inside of the first rotating hole 18. One end of the transmission cylinder 17 is inserted into the inside of the second rotating hole 19. The top of the B triangular plate 3 is provided with a supporting plate 20. The surface of the supporting plate 20 is provided with an electric push rod 21. The output end of the electric push rod 21 is provided with a clamping mechanism 22. The bottom of the clamping mechanism 22 is provided with a guide roller 23. The inside of the guide roller 23 is provided with a pressure sensor 24. The surface of the supporting plate 20 is provided with a controller 25. The first sleeve 7, the second sleeve 10 and the transmission cylinder 17 are triangularly distributed and the surfaces thereof are sleeved with sandpaper 26.

[0029] Specifically, the top of the B triangular plate 3 is provided with a supporting plate 20. The supporting plate 20 is installed with an electric push rod 21. The output end of the electric push rod 21 is connected with a clamping mechanism 22. The bottom of the clamping mechanism 22 is installed with a guide roller 23. The guide roller 23 is built-in with a pressure sensor 24. The surface of the supporting plate 20 is installed with a controller 25.

[0030] Figures 1-5 The second embodiment is shown. The main difference from the first embodiment is that the positioning block 14 is threadedly connected with the nut 15. The nut 15 is tightened to press the surface of the base plate 1 to adjust the sliding resistance of the B triangular plate 3 in the sliding groove 4.

[0031] Specifically, the bottom of the B triangular plate 3 is welded with a positioning block 14 on both sides. The top of the positioning block 14 is threadedly connected with a nut 15. The nut 15 is tightened to press the surface of the base plate 1 to increase the sliding resistance of the sliding block 5 and the sliding groove 4. The tightness adjustment of the nut 15 realizes the flexible control of the moving resistance of the B triangular plate 3, ensures the stability of the separation / closure of the triangular plates during the replacement of the sandpaper 26, and improves the operation convenience.

[0032] In this embodiment, the pressure sensor 24 is electrically connected with the controller 25 through a wire, and the controller 25 controls the lifting stroke of the electric push rod 21 through a signal line.

[0033] Specifically, the pressure sensor 24 inside the guide roller 23 is a Honeywell TJE series micro pressure sensor, with a range of 0-50N, which is suitable for detecting polishing contact pressure. It is connected with the controller 25 through a wire. The controller 25 is a Siemens S7-1200 PLC with analog input / output modules. The input module is a 6ES7 234-4HE32-0XB04 analog input module, 0-5V. The output module is a 6ES7 232-4HD32-0XB02 PWM output module, which controls the electric push rod 21. After receiving the pressure signal, the controller 25 controls the lifting stroke of the electric push rod 21 through a signal line. The electric push rod 21 is a Linak LA36 series with a thrust of 500N, which is suitable for polishing pressure regulation requirements. The pressure sensor 24 monitors the polishing contact pressure in real time and feeds back to the controller 25, achieving automatic adjustment of polishing pressure and improving yield.

[0034] The feedback logic is as follows: the pressure sensor 240-5V signal is input to the PLC analog input, which is calculated by the PID algorithm and output to the PWM output 0-10V, which adjusts the height of the electric push rod 21.

[0035] In this embodiment, the threaded bolt 12 penetrates through the two sides of the positioning disc 11 and is threadedly connected with the threaded holes 13 on both sides of the longitudinal sliding groove 8. The B fixed shaft 9 is fixed to different height positions of the longitudinal sliding groove 8 through the threaded bolt 12.

[0036] Specifically, the B fixed shaft 9 is fixed to different height positions of the longitudinal sliding groove 8 through the threaded bolt 12. The threaded bolt 12 penetrates through the two sides of the positioning disc 11 and is threadedly connected with the threaded holes 13 on both sides of the longitudinal sliding groove 8. Through the multi-stage fixation of the threaded bolt 12 in the equidistant threaded holes 13, the precise adjustment of the tension of the sandpaper 26 is realized, which meets the replacement requirements of the sandpaper 26 in different wear states.

[0037] In this embodiment, the rolling direction of the guide roller 23 is parallel to the transmission direction of the sandpaper 26, and the moving track of the clamping mechanism 22 is perpendicular to the transmission plane of the sandpaper 26.

[0038] Specifically, the rolling direction of the guide roller 23 is parallel to the transmission direction of the sandpaper 26, and the moving track of the clamping mechanism 22 is perpendicular to the transmission plane of the sandpaper 26. The parallel guide design of the guide roller 23 ensures that the polishing track is not deviated, and the polishing accuracy is improved.

[0039] In this embodiment, the axes of the first sleeve 7, the second sleeve 10 and the transmission cylinder 17 are located in the same plane, and the sandpaper 26 forms a closed-loop transmission path through the friction force on the surface of the sleeve.

[0040] Specifically, the axes of the first sleeve 7, the second sleeve 10 and the transmission cylinder 17 are located in the same plane, the sandpaper 26 forms a closed-loop transmission path through the friction force of the sleeve surface, and the triangular distribution layout of the sleeves ensures the stability of the sandpaper 26 transmission path, avoids slipping or derailing, and improves the stability of the equipment operation.

[0041] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0042] Working principle: loosen the nut 15 to release the fixation of the B triangular plate 3 in the sliding groove 4 and horizontally slide to separate the A triangular plate 2 and the B triangular plate 3, release the tension of the sandpaper 26 for quick replacement of the sandpaper 26, then adjust the height of the B fixed shaft 9 in the longitudinal sliding groove 8 and fix it through the threaded bolt 12 to reset the tension of the sandpaper 26, after closing the triangular plate, the servo motor 16 drives the transmission cylinder 17 to drive the sandpaper 26 to rotate in a closed loop, the clamping mechanism 22 fixes the workpiece and is pressed down by the electric push rod 21 during polishing, the pressure sensor 24 in the guide roller 23 detects the contact pressure in real time and feeds back to the controller 25, the controller 25 dynamically adjusts the stroke of the electric push rod 21 to maintain constant polishing pressure, realizes quick replacement of the sandpaper 26 and precise pressure control.

[0043] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0044] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sander for facilitating replacement of abrasive paper, comprising a base plate (1), characterised in that: The side of the top of the bottom plate (1) is respectively provided with A triangular plate (2) and B triangular plate (3), the top surface of the bottom plate (1) is provided with a chute (4), the bottom of the B triangular plate (3) is connected to the inside of the chute (4) through the horizontal sliding block (5), the first acute angle of the B triangular plate (3) is fixedly connected with the A fixed shaft (6), the surface of the A fixed shaft (6) is sleeved with the first sleeve (7) through the A bearing, the right angle of the A triangular plate (2) and the B triangular plate (3) is provided with a longitudinal sliding groove (8), the inside of the longitudinal sliding groove (8) is slidably connected with the B fixed shaft (9), the surface of the B fixed shaft (9) is sleeved with the second sleeve (10) through the B bearing, Both ends of the B fixed shaft (9) are provided with positioning discs (11), the inside of the both sides of the positioning disc (11) is threadedly penetrated by a threaded bolt (12), a plurality of threaded holes (13) are sequentially and equidistantly provided on the both sides of the longitudinal sliding groove (8) from top to bottom, the both sides of the bottom of the B triangular plate (3) are fixedly connected with positioning blocks (14), and the top of the positioning block (14) is provided with a nut (15). The top of the bottom plate (1) is fixedly connected with a servo motor (16), the output end of the servo motor (16) is fixedly connected with a transmission cylinder (17) penetrating one corner of the A triangular plate (2), the other corner of the A triangular plate (2) is provided with a first rotating hole (18), one corner of the B triangular plate (3) is provided with a second rotating hole (19), one end of the A fixed shaft (6) is inserted into the inside of the first rotating hole (18), one end of the transmission cylinder (17) is inserted into the inside of the second rotating hole (19), the top of the B triangular plate (3) is provided with a supporting plate (20), the surface of the supporting plate (20) is provided with an electric push rod (21), the output end of the electric push rod (21) is provided with a clamping mechanism (22), the bottom of the clamping mechanism (22) is provided with a guide roller (23), the inside of the guide roller (23) is provided with a pressure sensor (24), the surface of the supporting plate (20) is provided with a controller (25), the first sleeve (7), the second sleeve (10) and the transmission cylinder (17) are triangularly distributed and the surfaces thereof are sleeved with sandpaper (26).

2. The sander of claim 1, wherein: The positioning block (14) is threadedly connected with the nut (15), and the nut (15) is pressed against the surface of the bottom plate (1) by screwing to adjust the sliding resistance of the B triangular plate (3) in the chute (4).

3. The sander of claim 1, wherein: The pressure sensor (24) and the controller (25) are electrically connected through wires, and the controller (25) controls the lifting stroke of the electric push rod (21) through a signal line.

4. The sander of claim 1, wherein: The threaded bolt (12) penetrates the both sides of the positioning disc (11) and is threadedly connected with the threaded holes (13) on the both sides of the longitudinal sliding groove (8), and the B fixed shaft (9) is fixed at different height positions of the longitudinal sliding groove (8) through the threaded bolt (12).

5. The sander of claim 1, wherein: The rolling direction of the guide roller (23) is parallel to the transmission direction of the sandpaper (26), and the moving track of the clamping mechanism (22) is perpendicular to the transmission plane of the sandpaper (26).

6. The sander of claim 1, wherein: The axes of the first sleeve (7), the second sleeve (10) and the transmission cylinder (17) lie in the same plane, and the abrasive paper (26) forms a closed loop transmission path by the frictional force of the sleeve surface.

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