Reciprocating mechanism for polishing machine

Abstract

The utility model belongs to the technical field of polishing machines, and provides a reciprocating mechanism for a polishing machine, which comprises a pair of lifting supports and a lifting frame, the lifting supports are vertically stacked and distributed, and screw rods are inserted into four corners of each lifting support; the eccentric wheel enables the upper smooth frame and the lower smooth frame to be staggered and stacked alternately, the smooth frames move left and right back and forth along with rotation of the eccentric wheel, the polishing roller makes contact with different positions of the surface of a workpiece, and the smooth frames move up and down along with up-down movement of the lifting frame in the process that the lifting frame moves up and down to drive the polishing roller to ascend and descend. The smooth frame can flexibly and alternately move up and down and left and right, the effect that the lifting frame alternately moves up and down and left and right is achieved, external force is prevented from being concentrated on the polishing roller, the shaft sleeve and the roller shaft, and the polishing roller, the shaft sleeve and the roller shaft are not prone to damage. The reciprocating motion mechanism solves the problems that an existing reciprocating motion mechanism for the polishing machine is unreasonable in structural layout design, abrasion deformation is prone to being caused, and production is delayed.

Description

Technical Field

[0001] The utility model belongs to the technical field of polishing machines and provides a reciprocating motion mechanism for a polishing machine. Background Art

[0002] The polishing machine uses two polishing rollers in parallel, and the polishing rollers are arranged in an upper and lower layout. The workpiece is clamped between the upper and lower polishing rollers. The workpiece is polished smooth by relying on the friction between the upper and lower polishing rollers. Then, appropriate polishing agent is added to the surface of the workpiece to make the surface of the workpiece smooth and shiny, so as to achieve the effect of polishing the workpiece.

[0003] The reciprocating motion mechanism used in the existing polishing machines on the market has a technical problem of unreasonable structural layout design. Originally, the upper and lower polishing rollers were respectively installed on two fixed racks arranged one above the other. The two racks were fixed, and an air motor was installed on the rack. The air motor moved the two polishing rollers and the electric motor installed separately on the polishing rollers back and forth and up and down at the same time. The polishing rollers reciprocated back and forth and up and down at the same time when they rotated. The reciprocating motion of the polishing rollers back and forth and up and down for a long time will continuously rub and collide with the workpiece. The surface of the polishing roller is squeezed by the workpiece and deformed by force. This extrusion deformation force will be transmitted to the roller shaft, bushing, and bearings connected to the polishing roller, causing the roller shaft, bushing, and bearings to deform or wear and loosen, resulting in misalignment of the polishing roller. It is difficult for the polishing roller to fully contact the surface of the workpiece, which not only affects the polishing effect but also is prone to failure. During operation, the machine needs to be stopped for inspection and adjustment at irregular intervals, which seriously delays production. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and solve the problem that the reciprocating motion mechanism for the prior polishing machine has an unreasonable structural layout design, is prone to wear and deformation, and thus delays production.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a reciprocating motion mechanism for a polishing machine, comprising a lifting support and a lifting frame, wherein the lifting supports are provided in a pair and are stacked up and down, screw rods are interspersed at the four corners of the lifting supports, the screw rods are respectively threadedly connected to the four corners of the adjacent lifting supports, two adjacent screw rods in the same vertical line are fixedly connected to each other, any two adjacent screw rods are parallel to each other, and the outer threads of the two adjacent screw rods in the same vertical line have opposite directions of rotation;

[0006] The lifting frames are provided in a pair and are stacked up and down, and the lifting frames are located at the upper end of the lifting support;

[0007] A smooth frame symmetrically distributed up and down is fixed at the front end of the lifting frame, and the two smooth frames are stacked front to back, and sliding friction occurs between the two smooth frames. An eccentric groove is provided in the middle of the smooth frame, and an eccentric wheel is connected to the inside of the eccentric groove in a rolling manner. The front and rear eccentric wheels are fixed to each other and staggered up and down, and a drive shaft is fixedly connected to the overlapping intersection of the eccentric wheels.

[0008] In a preferred technical solution of the present invention, guide rails are installed on both the front and rear sides between the lifting bracket and the lifting frame, and the lifting frame is located between four adjacent screw rods on the same horizontal plane.

[0009] In a preferred technical solution of the present invention, a shaft sleeve is installed on the upper end of the lifting frame, a roller shaft is connected in the middle of the shaft sleeve through a bearing, a polishing roller is installed on the left end of the roller shaft, and the right end of the polishing roller is connected to a second motor installed on the upper end of the adjacent lifting frame.

[0010] In a preferred technical solution of the present invention, limit plates are installed on both the front and rear sides of the upper end of the lifting frame, and the height of the limit plates is more than ten centimeters.

[0011] In a preferred technical solution of the present invention, the smooth frame is in an "L" shape, the front end of the drive shaft is transmission-connected to a motor 1, and a bracket is installed at the lower end of the motor.

[0012] In a better technical solution of the present invention, a bracket is vertically connected to the lower ends of the four screw rods, and the four corners of the upper end of the bracket are fixed with support columns surrounding the outside of the adjacent screw rods. The support bracket and the support frame are located between the four support columns, and the inner walls of the support columns are respectively slidably connected to the support bracket and the four corners of the support frame.

[0013] In a preferred technical solution of the present invention, the outer threads of two adjacent screw rods on the same horizontal rectangular frame line have symmetrical rotation directions, and the outer threads of two corresponding screw rods on the same horizontal diagonal line have the same rotation direction.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The screw drives the upper and lower lifting supports to slide up and down between the four support columns. The rotating screw can adjust the distance between the upper and lower lifting supports, so that the lifting supports drive the corresponding lifting frame to move up and down between the four screws. The upper and lower lifting supports are used to adjust the distance between the upper and lower lifting frames, so that the lifting frame changes the distance between the upper and lower adjacent polishing rollers, so that workpieces of different sizes can be clamped between the upper and lower polishing rollers, so that the polishing rollers are in full contact with the workpiece surface.

[0016] The motor drives the eccentric wheel to rotate inside the eccentric groove. The eccentric wheel makes the upper and lower smooth frames alternately staggered and stacked with each other. The smooth frame moves back and forth left and right as the eccentric wheel rotates, allowing the polishing roller to rub the workpiece surface back and forth left and right. The polishing roller contacts different positions on the workpiece surface, and the polishing roller can fully polish the workpiece surface. When the lifting frame moves up and down to drive the polishing roller to rise and fall, the smooth frame also moves up and down with the lifting frame. The smooth frame can flexibly move its position alternately up and down, left and right, realizing the effect of moving the lifting frame alternately up and down, left and right, avoiding external force concentration on the polishing roller, bushing, and roller shaft. The polishing roller, bushing, and roller shaft are not easily damaged, and the flexibility of adjusting the position of the polishing roller is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a left view of the overall structure of the utility model;

[0018] Figure 2 This is a right side view of the overall structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the lifting support of the utility model;

[0020] Figure 4 This is an assembly effect diagram of the lifting frame and smooth frame of the utility model.

[0021] In the figure: 1. Bracket; 2. Support column; 3. Screw; 4. Lifting support; 5. Lifting frame; 6. Limiting plate; 7. Guide rail; 8. Smoothing frame; 9. Eccentric groove; 10. Eccentric wheel; 11. Drive shaft; 12. Motor 1; 13. Bushing; 14. Roller; 15. Polishing roller; 16. Motor 2; 17. Bracket. DETAILED DESCRIPTION

[0022] See also Figure 1-4The utility model provides a technical solution: a reciprocating motion mechanism for a polishing machine, including a lifting support 4 and a lifting frame 5, a pair of lifting supports 4 are provided and are stacked up and down, screw rods 3 are inserted into the four corners of the lifting support 4, and the screw rods 3 are respectively threadedly connected to the four corners of the adjacent lifting supports 4, and the upper and lower adjacent screw rods 3 in the same vertical line are fixedly connected to each other, and any two adjacent screw rods 3 are parallel to each other; a pair of lifting frames 5 are provided and are stacked up and down, the lifting frame 5 is located at the upper end of the lifting support 4, a shaft sleeve 13 is installed on the upper end of the lifting frame 5, and a roller shaft 14 is connected to the middle of the shaft sleeve 13 through a bearing; the lifting frame 5 is located between the four adjacent screw rods 3 on the same horizontal plane;The bracket 1 is connected to the lower ends of the four screw rods 3 with a vertical rotation. The four corners of the upper end of the bracket 1 are fixed with support columns 2 surrounding the outside of the adjacent screw rods 3. The support bracket and the support frame are located between the four support columns 2. The inner walls of the support columns 2 are slidably connected to the support bracket and the four corners of the support frame respectively. The bracket 1 lifts the four support columns 2 upward, and the support columns 2 firmly support the four corners of the adjacent lifting bracket 4 and the lifting frame 5 to the position between the four screw rods 3 on the same horizontal plane. The lifting bracket 4 is kept "self-locking" by relying on the threads on the surface of the screw rods 3. The four corners of the lifting bracket 4 are firmly supported on the surfaces of the adjacent screw rods 3. The outer threads of the upper and lower adjacent screw rods 3 in the same vertical line have opposite rotation directions. On the contrary, the outer threads of two adjacent screw rods 3 on the same horizontal rectangular frame line are symmetrical with each other, and the outer threads of two corresponding screw rods 3 on the same horizontal diagonal line have the same direction of rotation. The upper ends of the screw rods 3 rely on mechanical transmission, and the four screw rods 3 rotate at the same time. The rotation directions of any two adjacent screw rods 3 are opposite to each other. The lifting frame 5 slides along the support column 2 respectively as the screw rods 3 rotate. The sliding directions of the upper and lower lifting frames 5 are opposite to each other. The screw rod 3 drives the upper and lower lifting supports 4 to slide up and down between the four support columns 2. When the upper lifting support 4 rises, the lower lifting support 4 falls, and when the upper lifting support 4 falls, the lower lifting support 4 rises. The two lifting supports 4 are moved closer or farther away, and the rotating screw 3 can adjust the distance between the upper and lower lifting supports 4, so that the lifting supports 4 drive the corresponding lifting frame 5 to move up and down between the four screws 3. The movement direction of the upper and lower lifting frames 5 is consistent with the movement direction of the upper and lower lifting supports 4. The upper and lower lifting frames 5 are moved closer or farther away, and the distance between the upper and lower lifting frames 5 is adjusted by the upper and lower lifting supports 4. A polishing roller 15 is installed at the left end of the roller shaft 14, so that the lifting frame 5 changes the distance between the upper and lower adjacent polishing rollers 15, so that workpieces of different sizes can be clamped to the position between the upper and lower polishing rollers 15 ( Relying on an external fixture to clamp the workpiece), the polishing roller 15 is in full contact with the workpiece surface. The right side of the polishing roller 15 is connected to the second motor 16 installed on the upper end of the adjacent lifting frame 5. The second motor 16 drives the adjacent roller shaft 14 to rotate around the adjacent shaft sleeve 13 to drive the adjacent polishing roller 15. Limit plates 6 are installed on the front and back sides of the upper end of the lifting frame 5. The height of the limit plates 6 is more than ten centimeters. The limit plates 6 can form a limit area for the upper end of the lifting frame 5 that moves up and down. The limit plates 6 separate the upper end of the lifting frame 5 from nearby mechanical components. The limit plates 6 form a space for accommodating the polishing roller 15, shaft sleeve 13, roller shaft 14, and the second motor 16;

[0023] The front end of the lifting frame 5 is fixed with a smooth frame 8 that is symmetrically distributed up and down. The two smooth frames 8 are stacked front and back. There is sliding friction between the two smooth frames 8. An eccentric groove 9 is opened in the middle of the smooth frame 8. An eccentric wheel 10 is connected to the eccentric groove 9 in a rolling manner. The front and rear eccentric wheels 10 are fixed to each other and are staggered up and down. A drive shaft 11 is fixedly connected to the overlapping intersection between the eccentric wheels 10. The smooth frame 8 is "L" shaped. The front end of the drive shaft 11 is connected to a motor 12 for transmission. A bracket is installed at the lower end of the motor 12 17. The bracket 17 and the bracket 1 are placed flush on the ground. The bracket 1 stably supports the motor 12. The two eccentric wheels 10 use the drive shaft 11 as the rotation center line. The eccentric wheel 10 has a gap reserved in the eccentric groove 9. The motor 12 drives the eccentric wheel 10 to rotate inside the eccentric groove 9. The two eccentric wheels 10 revolve around the drive shaft 11 together. The rotating eccentric wheel 10 generates a rotating eccentric force around the drive shaft 11. The eccentric wheel 10 moves in the gap reserved in the eccentric groove 9. The eccentric wheel 10 The periphery slides and rubs against the inner wall of the eccentric groove 9, and the eccentric wheel 10 rotates along the inside of the eccentric groove 9 while pushing the inner wall of the eccentric groove 9. The eccentric wheel 10 dials the adjacent smooth frame 8 on the inner wall of the eccentric groove 9. The smooth frame 8 moves back and forth left and right as the eccentric wheel 10 rotates. The eccentric wheel 10 makes the upper and lower smooth frames 8 alternately staggered and stacked with each other. The upper and lower smooth frames 8 slide and rub against each other. Guide rails 7 are installed on both sides of the lifting bracket 4 and the lifting frame 5. The smooth frame 8 drives the adjacent lifting frame 5 along the adjacent The guide rails 7 slide back and forth left and right on the upper ends of the adjacent lifting supports 4. The guide rails 7 allow the lifting frames 5 to maintain a stable sliding effect on the upper ends of the adjacent lifting supports 4. The upper and lower lifting frames 5 move flexibly and alternately left and right. The lifting frames 5 simultaneously drive the polishing rollers 15, the shaft sleeves 13, the roller shafts 14, and the second motor 16 to move back and forth left and right synchronously, so that the polishing rollers 15 rub the surface of the workpiece back and forth left and right. The polishing rollers 15 contact different positions on the surface of the workpiece, so that the rotating polishing rollers 15 can fully polish the surface of the workpiece.

[0024] In the process of the lifting frame 5 moving up and down to drive the polishing roller 15 to move up and down, the smooth frame 8 moves up and down with the lifting frame 5 moving up and down. The lifting frame 5 moving up and down forms a push-pull force on the adjacent smooth frame 8. The smooth frame 8 moving up and down makes the eccentric groove 9 slide and rub around the outer periphery of the eccentric wheel 10. The smooth frame 8 can flexibly move its position up and down and left and right, realizing the effect of moving the lifting frame 5 up and down and left and right alternately. Only the lifting frame 5 drives the polishing roller 15, the shaft sleeve 13, and the roller shaft 14 to move relative to each other, while the polishing roller 15, the shaft sleeve 13. The roller shaft 14 itself is relatively stationary, and the lifting support 4 plays a role of stable support for the adjacent lifting frame 5. The polishing roller 15, the sleeve 13, and the roller shaft 14 are subjected to very little force of extrusion and deformation of the workpiece, thereby avoiding external force concentration on the polishing roller 15, the sleeve 13, and the roller shaft 14. The polishing roller 15, the sleeve 13, and the roller shaft 14 are not easily damaged, and the wear and deformation of the polishing roller 15, the sleeve 13, and the roller shaft 14 are reduced. At the same time, the flexibility of adjusting the position of the polishing roller 15 is also improved, the failure rate is reduced, and maintenance and adjustment are reduced, which has the advantage of reasonable structural layout design.

[0025] Working principle:

[0026] (1) The support column 2 firmly supports the four corners of the adjacent lifting brackets 4 and the lifting frame 5 to the position between the four screw rods 3 on the same horizontal plane, and relies on the threads on the surface of the screw rods 3 to maintain "self-locking". The four corners of the lifting bracket 4 are firmly supported on the surfaces of the adjacent screw rods 3. The outer thread rotation directions of the upper and lower adjacent screw rods 3 in the same vertical line are opposite to each other, and the outer thread rotation directions of the two adjacent screw rods 3 on the same horizontal rectangular frame line are symmetrical to each other. The outer thread rotation directions of the two corresponding screw rods 3 on the same horizontal diagonal line are the same. The upper ends of the screw rods 3 rely on mechanical transmission, and the four screw rods 3 rotate at the same time. The rotation directions of any two adjacent screw rods 3 are opposite to each other. The lifting frame 5 slides along the support column 2 as the screw rod 3 rotates. The sliding directions of the upper and lower lifting frames 5 are opposite to each other. The screw rod 3 drives the upper and lower lifting brackets 4 along the four support columns. The support columns 2 slide up and down back and forth. When the upper lifting support 4 rises, the lower lifting support 4 falls, and when the upper lifting support 4 falls, the lower lifting support 4 rises. The two lifting supports 4 move closer or farther away from each other. The rotating screw 3 can adjust the distance between the upper and lower lifting supports 4, so that the lifting support 4 drives the corresponding lifting frame 5 to move up and down back and forth between the four screw rods 3. The movement direction of the upper and lower lifting frames 5 is consistent with the movement direction of the upper and lower lifting supports 4. The upper and lower lifting frames 5 move closer or farther away from each other. The upper and lower lifting supports 4 are used to adjust the distance between the upper and lower lifting frames 5, so that the lifting frame 5 changes the distance between the upper and lower adjacent polishing rollers 15, so that workpieces of different sizes can be clamped between the upper and lower polishing rollers 15, so that the polishing rollers 15 are in full contact with the surface of the workpiece.

[0027] (2) The two eccentric wheels 10 use the driving shaft 11 as the rotation center line. The eccentric wheels 10 reserve a gap in the eccentric groove 9. The motor 12 drives the eccentric wheels 10 to rotate inside the eccentric groove 9. The two eccentric wheels 10 revolve around the driving shaft 11 together. The rotating eccentric wheels 10 generate a rotating eccentric force around the driving shaft 11. The eccentric wheels 10 move in the gap reserved in the eccentric groove 9. The outer periphery of the eccentric wheel 10 slides and rubs against the inner wall of the eccentric groove 9. The eccentric wheel 10 rotates along the inside of the eccentric groove 9 while pushing the inner wall of the eccentric groove 9. The eccentric wheel 10 moves the adjacent smooth frame 8 on the inner wall of the eccentric groove 9. The smooth frame 8 moves back and forth left and right as the eccentric wheel 10 rotates. The wheel 10 makes the upper and lower smooth frames 8 alternately staggered and stacked, and the upper and lower smooth frames 8 slide and rub against each other, and the smooth frames 8 drive the adjacent lifting frames 5 to slide back and forth left and right along the adjacent guide rails 7 on the upper ends of the adjacent lifting supports 4. The guide rails 7 allow the lifting frames 5 to maintain a stable sliding effect on the upper ends of the adjacent lifting supports 4, and the upper and lower lifting frames 5 move flexibly and alternately left and right. The lifting frames 5 simultaneously drive the polishing roller 15, the shaft sleeve 13, the roller shaft 14, and the second motor 16 to move back and forth left and right synchronously, so that the polishing roller 15 rubs the surface of the workpiece back and forth left and right. The polishing roller 15 contacts different positions on the surface of the workpiece, so that the rotating polishing roller 15 can fully polish the surface of the workpiece;

[0028] (3) When the lifting frame 5 moves up and down and drives the polishing roller 15 to move up and down, the smooth frame 8 moves up and down as the lifting frame 5 moves up and down. The lifting frame 5 that moves up and down forms a push-pull force on the adjacent smooth frame 8. The smooth frame 8 that moves up and down allows the eccentric groove 9 to slide and rub around the outer periphery of the eccentric wheel 10. The smooth frame 8 can flexibly move its position alternately up and down and left and right, thereby achieving the effect of moving the lifting frame 5 alternately up and down and left and right. Only the lifting frame 5 drives the polishing roller 15, the shaft sleeve 13, and the roller shaft 14 to move relative to each other, while the polishing roller 15, the shaft sleeve 13, and the roller shaft 14 themselves are relatively stationary. The lifting support 4 plays a role of stable support for the adjacent lifting frames 5. The force exerted by the workpiece on the polishing roller 15, the shaft sleeve 13, and the roller shaft 14 to be squeezed and deformed is very small, thereby avoiding external force concentration on the polishing roller 15, the shaft sleeve 13, and the roller shaft 14, and the polishing roller 15, the shaft sleeve 13, and the roller shaft 14 are not easily damaged.

Claims

1. A reciprocating motion mechanism for a polishing machine, comprising a lifting support (4) and a lifting frame (5), characterized in that: The lifting supports (4) are provided with a pair and are stacked up and down. The four corners of the lifting supports (4) are interspersed with screw rods (3). The screw rods (3) are respectively connected with the four corners of the adjacent lifting supports (4) through threads. The two adjacent screw rods (3) in the same vertical line are fixedly connected to each other. Any two adjacent screw rods (3) are parallel to each other. The outer surface screw threads of the two adjacent screw rods (3) in the same vertical line are opposite to each other. The lifting frames (5) are provided in a pair and are stacked up and down, and the lifting frames (5) are located at the upper end of the lifting support (4); A smooth frame (8) symmetrically distributed up and down is fixed at the front end of the lifting frame (5), and the two smooth frames (8) are stacked and distributed front and back. Sliding friction occurs between the two smooth frames (8). An eccentric groove (9) is provided in the middle of the smooth frame (8), and an eccentric wheel (10) is connected in a rolling manner inside the eccentric groove (9). The front and rear eccentric wheels (10) are fixed to each other and staggered up and down. A driving shaft (11) is fixedly connected to the overlapping intersection between the eccentric wheels (10).

2. A reciprocating motion mechanism for a polishing machine according to claim 1, characterized in that: Guide rails (7) are installed on both the front and rear sides between the lifting bracket (4) and the lifting frame (5), and the lifting frame (5) is located between four adjacent screw rods (3) on the same horizontal plane.

3. A reciprocating motion mechanism for a polishing machine according to claim 1, characterized in that: The upper end of the lifting frame (5) is equipped with a shaft sleeve (13), the middle of the shaft sleeve (13) is connected to a roller shaft (14) through a bearing, the left end of the roller shaft (14) is equipped with a polishing roller (15), and the right side of the polishing roller (15) is connected to a second motor (16) installed on the upper end of the adjacent lifting frame (5).

4. A reciprocating motion mechanism for a polishing machine according to claim 1, characterized in that: Limiting plates (6) are installed on both the front and rear sides of the upper end of the lifting frame (5), and the height of the limiting plates (6) is more than ten centimeters.

5. A reciprocating motion mechanism for a polishing machine according to claim 1, characterized in that: The smooth frame (8) is in an L-shape, the front end of the drive shaft (11) is connected to a motor (12), and a bracket (17) is installed at the lower end of the motor.

6. A reciprocating motion mechanism for a polishing machine according to claim 1, characterized in that: A bracket (1) is vertically rotatably connected between the lower ends of the four screw rods (3), and support columns (2) surrounding the outer sides of adjacent screw rods (3) are fixed to the four corners of the upper end of the bracket (1). The support bracket and the support frame are located between the four support columns (2), and the inner walls of the support columns (2) are slidably connected to the support bracket and the four corners of the support frame respectively.

7. A reciprocating motion mechanism for a polishing machine according to claim 1, characterized in that: The outer threads of two adjacent screw rods (3) on the same horizontal rectangular frame line have symmetrical rotation directions, and the outer threads of two corresponding screw rods (3) on the same horizontal diagonal line have the same rotation direction.

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