Device for automatically polishing seat legs

Abstract

The utility model relates to the technical field of automatic polishing of seat legs, in particular to a device for automatically polishing the seat legs, which comprises a base, a feeding mechanism capable of storing a plurality of seat legs is arranged in the base, an enveloping type belt sander for polishing the seat legs in the feeding mechanism is arranged in the base, and the enveloping type belt sander is used for polishing the seat legs in the feeding mechanism. A workpiece turnover mechanism which is connected with the enveloping type belt sander and can turn over the chair legs to be polished is arranged on the enveloping type belt sander, a robot clamp device capable of taking the chair legs is arranged in the base, and a discharging mechanism capable of storing the polished chair legs is arranged in the base. Compared with the prior art, the device for automatically polishing the seat legs can be applied to automatic polishing of conventional seat legs, can also achieve automatic polishing, and is high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic polishing of chair legs, in particular to a device for automatically polishing chair legs. Background Art

[0002] Conventional chair legs have a shape problem, so there is no automated polishing method that can solve the polishing interference problem. For example, the five-star foot chair legs have five legs evenly distributed and each leg needs to be polished 360°, which causes interference in polishing. The current polishing method is to manually polish in multiple stations using different polishing tools to avoid the polishing interference problem. However, there are safety issues when polishing manually, and the tool loss is also large, which affects the health of workers. The current automated polishing method for chair legs can basically only be used for individual leg types that do not need to polish the bottom (side B), because the bottom (side B) of this type of chair leg is empty and does not need to be polished. The other three sides of the cross section that need to be polished are basically planes. This type of chair leg accounts for only a minority of the chair legs. Since only one plane can be polished at a time, the polishing efficiency is not high. Since there is currently no automated polishing method to solve conventional chair legs, a device for automatically polishing chair legs is proposed, which is suitable for automated polishing, has high efficiency, and replaces manual polishing. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a device for automatically polishing chair legs, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a device for automatically polishing chair legs, comprising a base, the base is provided with a loading mechanism capable of storing a plurality of chair legs, the base is provided with an enveloping sanding machine for grinding the chair legs in the loading mechanism, the enveloping sanding machine is provided with a workpiece turning mechanism connected to the enveloping sanding machine and capable of turning over the chair legs being ground, the base is provided with a robot clamp capable of picking up the chair legs, and the base is provided with a unloading mechanism capable of storing the ground chair legs.

[0007] Furthermore, the feeding mechanism includes a positioning column A, the positioning column A is used to place the chair legs, and the outside of the positioning column A is provided with a lifting support plate A that can move up and down along the surface of the positioning column A, and the lifting support plate A can drive the chair legs to move up and down. When the feeding mechanism is set, the chair legs are placed in the positioning column A, one leg is placed against the positioning column B, and the clamping cylinder is extended, and the clamping column moves the leg close to the positioning column B to complete the positioning of the chair legs. This feeding mechanism can store fifteen chair legs at a time, and after taking out the top chair leg, the lifting support plate rises by one chair leg height to complete the automatic feeding process.

[0008] Furthermore, the feeding mechanism also includes a positioning column B, which is arranged on one side of the positioning column A and the legs of the seat legs can interfere with the positioning column B. The outside of the positioning column A is provided with a clamping column that can rotate at an angle and press the legs of the seat legs onto the positioning column B.

[0009] Furthermore, a frame guide rail is provided on the base, the lifting plate A is movably installed on the frame guide rail, a supporting cylinder for driving the lifting plate A to move up and down is provided in the frame guide rail, a spacing is left between the positioning column A and the positioning column B, a supporting frame is provided on the base, a plurality of hollow connecting rods connected to the supporting frame are provided on the outside of the supporting frame, the clamping column is installed in the hollow connecting rod, and a clamping cylinder capable of driving the clamping column to rotate an angle is provided on the outside of the supporting frame.

[0010] Furthermore, the enveloping belt sander includes a frame, a connecting plate connected to the frame is provided in the frame, an upper guide wheel and a lower guide wheel connected to the connecting plate are provided in the connecting plate, the upper guide wheel and the lower guide wheel are symmetrically distributed, and a sanding belt capable of grinding the chair legs is provided between the upper guide wheel and the lower guide wheel. The enveloping belt sander is composed of a frame, a driving wheel, an upper guide wheel, a lower guide wheel, a guide wheel support arm, a tensioning wheel, and a dust suction pipe. The upper and lower guide wheels can change the distance under the push of an expansion cylinder, and the tensioning wheel compensates for the tensioning of the sanding belt after the distance changes. In the upper and lower guide wheel structures of the enveloping belt sander, an expansion cylinder is used to drive the guide wheel support arm to change the position of the upper and lower guide wheels, and a motor can be used to drive a gear or a screw rod to complete the same action.

[0011] Furthermore, two rotatable guide wheel arms are relatively arranged on the connecting plate, the upper guide wheel is installed at the end of one of the guide wheel arms, and the lower guide wheel is installed at the end of the other guide wheel arm, the other ends of the two guide wheel arms are connected by a rotating shaft, and the upper guide wheel and the lower guide wheel can be adjusted in angle by the two guide wheel arms, the frame is provided with a driving wheel that can drive the sanding belt to rotate, the frame is provided with a plurality of auxiliary wheels for supporting the sanding belt, the frame is provided with a tensioning wheel that can move laterally and adjust the tightness of the sanding belt, and the frame is provided with at least one dust suction duct.

[0012] Furthermore, the connecting plate is provided with an expansion cylinder which is connected to the two guide wheel arms and can adjust the expansion angles of the upper guide wheel and the lower guide wheel. Four auxiliary wheels are provided, two of which are respectively provided at the sanding belt outlet and the sanding belt inlet in the frame, and the other two auxiliary wheels are respectively provided at the sanding belt inlet position and the sanding belt outlet position of the driving wheel. The rotation of the driving wheel can be driven by a motor, and the lateral movement of the tensioning wheel is driven by a tensioning cylinder.

[0013] Furthermore, the workpiece flipping mechanism includes a bottom plate, the bottom plate is provided with a clamping jaw A capable of longitudinal movement and the clamping jaw A can also be adjusted in angle, the bottom plate is provided with a clamping jaw B capable of lateral movement; the unloading mechanism includes a positioning column C, the positioning column C is used to place the chair legs, one side of the positioning column C is provided with a lifting support plate B that moves up and down along the surface of the positioning column C, and the lifting support plate B can drive the chair legs to move up and down. The setting of the workpiece flipping mechanism is due to the need to polish the two sides AB, and the chair legs need to be turned over on the robot fixture in the middle of the process. When turning over, the robot fixture puts the chair legs into the clamping jaw A, and the rotating cylinder rotates 180 degrees after clamping the clamping jaw A, and the clamping jaw B moves forward to clamp the back of the chair leg and then retreats under the action of the cylinder (not shown in the figure). After the clamping jaw A moves to the left to avoid interference, the clamping jaw B moves forward with the chair leg, and the robot fixture takes the chair leg away to complete the flipping of the chair leg. In the unloading mechanism, when unloading, the robot puts the chair leg into the positioning column C. After unloading a chair leg, the lifting support plate B drops by the height of the chair leg to complete the automatic unloading process. The workpiece flipping mechanism uses a cylinder (not shown in the figure) to drive the movement of the clamping claw, and the same effect can be achieved by using a motor to drive the lead screw or gear.

[0014] Furthermore, a longitudinal guide rail is installed on the base plate, a slider A is provided on the longitudinal guide rail for longitudinal movement along the longitudinal guide rail, the clamp A is installed in the slider A, a rotating cylinder is provided in the slider A for driving the clamp A to rotate for angle adjustment, a transverse guide rail is installed on the base plate, a slider B is provided in the transverse guide rail for transverse movement along the transverse guide rail, and the clamp B is installed on the slider B; a lifting pallet stand is provided on the base, and the lifting pallet stand can drive the lifting pallet B to move up and down.

[0015] Furthermore, the base is also provided with a wheel polisher capable of grinding the chair legs, and the base is provided with a control cabinet. The side of the chair legs viewed from above is face A, and the side viewed from above is face B. The area of ​​the chair legs that needs to be polished is from 1.5 cm away from the root to the tail.

[0016] In this solution, several positioning columns in the loading and unloading mechanism are fixed. A loading and unloading rack with casters can be used to move the loading and unloading rack. The loading and unloading rack can be manually pushed to the loading and unloading device and then fixed.

[0017] In this proposal, when the polishing quality requirements for surface A are high, an envelope grinding method is used to polish surface B and part of surface A, and the remaining surface A is polished using a traditional industrial polishing machine wheel at other stations.

[0018] The device for automatically polishing chair legs can be applied to automatic polishing of conventional chair legs compared with the prior art, and can also realize automatic polishing with high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model before the chair legs are pressed into the sanding belt;

[0021] Figure 3 This is a structural schematic diagram of the utility model after the seat leg is pressed into the sand belt;

[0022] Figure 4 It is a schematic diagram of the internal structure of the envelope-type sanding machine of the utility model;

[0023] Figure 5 For this utility model Figure 3 Schematic diagram of the structure of the middle part;

[0024] Figure 6 This is a schematic diagram of the structure of the chair legs of the utility model;

[0025] Figure 7 For this utility model Figure 1Schematic diagram of the structure of the middle seat leg after loading;

[0026] Figure 8 For this utility model Figure 7 Schematic diagram of the top view structure in;

[0027] Fig. 9 For this utility model Figure 1 Schematic diagram of the structure of the middle seat leg before loading;

[0028] Fig.10 For this utility model Figure 1 A structural schematic diagram of the feeding mechanism in FIG.

[0029] Fig.11 For this utility model Figure 1 A schematic diagram of the structure of the workpiece turning mechanism;

[0030] Fig.12 This is a process flow chart of the utility model.

[0031] In the figure: 1. base; 2. feeding mechanism; 3. enveloping belt sander; 4. workpiece turning mechanism; 5. robot fixture; 6. unloading mechanism; 7. positioning column A; 8. chair leg; 9. support frame; 10. lifting plate A; 11. positioning column B; 12. clamping column; 13. frame guide rail; 14. supporting cylinder; 15. hollow connecting rod; 16. clamping cylinder; 17. frame; 18. connecting plate; 19. upper guide wheel; 20. Lower guide wheel; 21. Abrasive belt; 22. Guide wheel support arm; 23. Expanding cylinder; 24. Driving wheel; 25. Auxiliary wheel; 26. Tensioning wheel; 27. Dust suction duct; 28. Lifting tray stand; 30. Longitudinal guide rail; 31. Slider A; 32. Rotating cylinder; 33. Transverse guide rail; 34. Slider B; 35. Bottom plate; 36. Clamp A; 37. Clamp B; 38. Positioning column C; 39. Lifting tray B; 40. Wheel polisher. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] See also Figures 1 to 12The utility model provides a technical solution: a device for automatically polishing chair legs, comprising a base 1, a feeding mechanism 2 capable of storing a plurality of chair legs 8 is provided in the base 1, the feeding mechanism 2 comprises a positioning column A7, the positioning column A7 is used to place the chair legs 8, a lifting support plate A10 capable of moving up and down along the surface of the positioning column A7 is provided on the outside of the positioning column A7, the lifting support plate A10 can drive the chair legs 8 to move up and down, the feeding mechanism 2 also comprises a positioning column B11, the positioning column B11 is arranged on one side of the positioning column A7 and the legs of the chair legs 8 can conflict with the positioning column B11, the positioning column A7 is provided on the outside of the clamping column 12 capable of rotating at an angle and pressing the legs of the chair legs 8 onto the positioning column B11, the base 1 is provided with a frame guide rail 13, a lifting support plate A10 is movably installed on the frame guide rail 13, a supporting cylinder 14 is provided in the frame guide rail 13 for driving the lifting support plate A10 to move up and down, a spacing is left between the positioning column A7 and the positioning column B11, a supporting frame 9 is provided on the base 1, a plurality of hollow connecting rods 15 connected to the supporting frame 9 are provided on the outside of the supporting frame 9, a clamping column 12 is installed in the hollow connecting rod 15, a clamping cylinder 16 capable of driving the clamping column 12 to rotate the angle is provided on the outside of the supporting frame 9, an enveloping sanding machine 3 for grinding the chair legs 8 in the feeding mechanism 2 is provided in the base 1, and the enveloping sanding machine 3 includes a frame 17, and a connecting plate 18 connected to the frame 17 is provided in the frame 17 The connecting plate 18 is provided with an upper guide wheel 19 and a lower guide wheel 20 connected to the connecting plate 18, and the upper guide wheel 19 and the lower guide wheel 20 are symmetrically distributed. A sanding belt 21 capable of grinding the chair legs 8 is provided between the upper guide wheel 19 and the lower guide wheel 20. Two rotatable guide wheel arms 22 are relatively provided on the connecting plate 18. The upper guide wheel 19 is installed at the end of one of the guide wheel arms 22, and the lower guide wheel 20 is installed at the end of the other guide wheel arm 22. The other ends of the two guide wheel arms 22 are connected by a rotating shaft. The upper guide wheel 19 and the lower guide wheel 20 can be adjusted in angle through the two guide wheel arms 22. The frame 17 is provided with a driving wheel 24 capable of driving the sanding belt 21 to rotate, and the frame 17 is provided with a plurality of support wheels. An auxiliary wheel 25 supporting the sanding belt 21, a tensioning wheel 26 capable of lateral movement and adjusting the tightness of the sanding belt 21 is provided in the frame 17, at least one dust suction pipe 27 is provided in the frame 17, and an expansion cylinder 23 connected to two guide wheel arms 22 and capable of adjusting the expansion angle of the upper guide wheel 19 and the lower guide wheel 20 is provided on the connecting plate 18. Four auxiliary wheels 25 are provided, two of which are respectively arranged at the sanding belt outlet in the frame 17 and the sanding belt inlet in the frame 17, and the other two auxiliary wheels 25 are respectively arranged at the sanding belt inlet position of the driving wheel 24 and the sanding belt outlet position of the driving wheel 24. The rotation of the driving wheel 24 can be driven by a motor, and the lateral movement of the tensioning wheel 26 is driven by a tensioning cylinder.The enveloping belt sander 3 is provided with a workpiece turning mechanism 4 which is connected to the enveloping belt sander 3 and can turn over the chair leg 8 being ground, the base 1 is provided with a robot clamp 5 which can pick up the chair leg 8, the base 1 is provided with a feeding mechanism 6 which can store the chair leg 8 after grinding, the workpiece turning mechanism 4 includes a bottom plate 35, the bottom plate 35 is provided with a clamping jaw A36 which can move longitudinally and the clamping jaw A36 can also adjust the angle, the bottom plate 35 is provided with a clamping jaw B37 which can move laterally; the feeding mechanism 6 includes a positioning column C38, the positioning column C38 is used to place the chair leg 8, one side of the positioning column C38 is provided with a lifting support plate B39 which moves up and down along the surface of the positioning column C38, and the lifting support plate B39 can drive The chair legs 8 move up and down, a longitudinal guide rail 30 is installed on the bottom plate 35, a slider A31 is provided on the longitudinal guide rail 30 for longitudinal movement along the longitudinal guide rail 30, a clamp A36 is installed in the slider A31, a rotary cylinder 32 is provided in the slider A31 for driving the clamp A36 to adjust the angle, a transverse guide rail 33 is installed on the bottom plate 35, a slider B34 is provided in the transverse guide rail 33 for transverse movement along the transverse guide rail 33, and a clamp B37 is installed on the slider B34; a lifting support frame 28 is provided on the base 1, and the lifting support frame 28 can drive the lifting support B39 to move up and down, and a wheel polisher 40 is also provided on the base 1 for grinding the chair legs 8, and a control cabinet is provided on the base 1.

[0034] The electrical components mentioned in this article are all connected to an external main controller and 380V commercial power, and the main controller can be a conventional known device for control such as a computer.

[0035] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in this utility model or utility model can be understood according to the specific circumstances.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for automatically polishing chair legs, comprising a base (1), characterized in that: The base (1) is provided with a loading mechanism (2) capable of storing a plurality of chair legs (8); the base (1) is provided with an enveloping sanding machine (3) for grinding the chair legs (8) in the loading mechanism (2); the enveloping sanding machine (3) is provided with a workpiece turning mechanism (4) connected to the enveloping sanding machine (3) and capable of turning over the chair legs (8) being ground; the base (1) is provided with a robot fixture (5) capable of picking up the chair legs (8); and the base (1) is provided with a unloading mechanism (6) capable of storing the ground chair legs (8).

2. The device for automatically polishing chair legs according to claim 1, characterized in that: The feeding mechanism (2) comprises a positioning column A (7), wherein the positioning column A (7) is used to place a chair leg (8), and a lifting support plate A (10) is provided on the outside of the positioning column A (7) and can move up and down along the surface of the positioning column A (7), and the lifting support plate A (10) can drive the chair leg (8) to move up and down.

3. The device for automatically polishing chair legs according to claim 2, characterized in that: The feeding mechanism (2) further comprises a positioning column B (11), wherein the positioning column B (11) is arranged on one side of the positioning column A (7) and the legs of the chair legs (8) can contact the positioning column B (11), and a clamping column (12) is arranged outside the positioning column A (7) and can rotate at an angle and press the legs of the chair legs (8) onto the positioning column B (11).

4. The device for automatically polishing chair legs according to claim 3, characterized in that: The base (1) is provided with a frame guide rail (13), the lifting support plate A (10) is movably mounted on the frame guide rail (13), a supporting cylinder (14) for driving the lifting support plate A (10) to move up and down is provided in the frame guide rail (13), a spacing is left between the positioning column A (7) and the positioning column B (11), a supporting frame (9) is provided on the base (1), a plurality of hollow connecting rods (15) connected to the supporting frame (9) are provided on the outside of the supporting frame (9), the clamping column (12) is installed in the hollow connecting rod (15), and a clamping cylinder (16) capable of driving the clamping column (12) to rotate an angle is provided on the outside of the supporting frame (9).

5. The device for automatically polishing chair legs according to claim 1, characterized in that: The enveloping belt sander (3) comprises a frame (17), a connecting plate (18) connected to the frame (17) is provided in the frame (17), an upper guide wheel (19) and a lower guide wheel (20) connected to the connecting plate (18) are provided in the connecting plate (18), the upper guide wheel (19) and the lower guide wheel (20) are symmetrically arranged, and a sanding belt (21) capable of grinding the chair legs (8) is provided between the upper guide wheel (19) and the lower guide wheel (20).

6. The device for automatically polishing chair legs according to claim 5, characterized in that: Two rotatable guide wheel arms (22) are arranged on the connecting plate (18) in opposite directions; the upper guide wheel (19) is mounted on the end of one of the guide wheel arms (22); the lower guide wheel (20) is mounted on the end of the other guide wheel arm (22); the other ends of the two guide wheel arms (22) are connected via a rotating shaft; the upper guide wheel (19) and the lower guide wheel (20) can be adjusted in angle by the two guide wheel arms (22); the frame (17) is provided with a driving wheel (24) capable of driving the sanding belt (21) to rotate; the frame (17) is provided with a plurality of auxiliary wheels (25) for supporting the sanding belt (21); the frame (17) is provided with a tensioning wheel (26) capable of moving laterally and adjusting the tightness of the sanding belt (21); and the frame (17) is provided with at least one dust collection pipe (27).

7. The device for automatically polishing chair legs according to claim 6, characterized in that: The connecting plate (18) is provided with an unfolding cylinder (23) connected to the two guide wheel support arms (22) and capable of adjusting the unfolding angles of the upper guide wheel (19) and the lower guide wheel (20). Four auxiliary wheels (25) are provided, wherein two auxiliary wheels (25) are respectively provided at the sanding belt outlet in the frame (17) and the sanding belt inlet in the frame (17), and the other two auxiliary wheels (25) are respectively provided at the sanding belt inlet position of the driving wheel (24) and the sanding belt outlet position of the driving wheel (24). The rotation of the driving wheel (24) can be driven by a motor, and the lateral movement of the tensioning wheel (26) is driven by a tensioning cylinder.

8. The device for automatically polishing chair legs according to claim 1, characterized in that: The workpiece turning mechanism (4) comprises a base plate (35), on which a clamping jaw A (36) capable of longitudinal movement is provided and the clamping jaw A (36) can also be adjusted in angle, and on which a clamping jaw B (37) capable of transverse movement is provided; the unloading mechanism (6) comprises a positioning column C (38), the positioning column C (38) being used to place a chair leg (8), and a lifting support plate B (39) capable of upward and downward movement along a surface of the positioning column C (38) is provided on one side of the positioning column C (38), and the lifting support plate B (39) can drive the chair leg (8) to move upward and downward.

9. The device for automatically polishing chair legs according to claim 8, characterized in that: The bottom plate (35) is provided with a longitudinal guide rail (30), the longitudinal guide rail (30) is provided with a slider A (31) which moves longitudinally along the longitudinal guide rail (30), the clamping jaw A (36) is installed in the slider A (31), the slider A (31) is provided with a rotary cylinder (32) which can drive the clamping jaw A (36) to rotate for angle adjustment, the bottom plate (35) is provided with a transverse guide rail (33), the transverse guide rail (33) is provided with a slider B (34) which moves transversely along the transverse guide rail (33), and the clamping jaw B (37) is installed on the slider B (34); the base (1) is provided with a lifting support plate stand (28), and the lifting support plate stand (28) can drive the lifting support plate B (39) to move up and down.

10. The device for automatically polishing chair legs according to claim 1, characterized in that: The base (1) is also provided with a wheel polishing machine (40) capable of polishing the chair legs (8), and the base (1) is provided with a control cabinet.

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