Production device of integrated chair back framework capable of adjusting height of backrest and use method of production device

Abstract

The invention discloses a production device of an integrated chair back framework capable of adjusting the height of a backrest and a use method of the production device, and relates to the technical field of chair back machining.The production device of the integrated chair back framework capable of adjusting the height of the backrest comprises a frame and supporting legs, and the multiple supporting legs are fixedly connected to the lower end of the frame; a grinding device is arranged on the left side of the upper end of the frame, and the lower ends of the multiple supporting legs are fixedly connected with two bottom plates correspondingly. Through cooperation of an overturning device, a hydraulic cylinder, a round rod, a square plate and a frame body, the rotating angle of a connecting rod is opposite to the rotating angle of a cylinder during clamping, after the frame body rotates by 180 degrees, a third motor is stopped, at the moment, overturning of a backrest framework can be adjusted, an output shaft of a first motor is started to rotate reversely, the frame body can move back to the original position, and the backrest framework can be adjusted. And the lower end of the adjustable backrest framework can make contact with the abrasive paper again, and the adjustable backrest framework can be turned over and polished, so that the adjustable backrest framework polishing device is more convenient to polish.

Description

Technical Field

[0001] The invention relates to the technical field of chair back production, and in particular to a production device for an integrated chair back frame capable of adjusting the backrest height and a use method thereof. Background Art

[0002] Ergonomic chairs are now gradually becoming well-known to everyone. When working, office chairs are the most in contact with the human body. The influence of the back shape of office chairs on the shape of the human spine is largely related to people's work efficiency and rest quality. At present, ergonomic chairs can be divided into two designs: separated waist and back and one-piece molded back. The one-piece molded back has relatively high technical requirements and automatically adjusts the back curve. The curvature of the back is fixed, and the sacrum and waist have better support.

[0003] First of all, the existing one-piece chair back frame needs to be polished during processing to ensure the smoothness of the chair back surface. The front side needs to be polished first, and then the back side needs to be polished. However, the existing polishing equipment is not convenient for automatically turning over the chair back frame for continuous polishing, which makes the existing equipment inconvenient when polishing.

[0004] Secondly, when the existing one-piece chair back frame is being processed, the chair back frame is usually in a frame state, that is, it has a hole-like structure, which makes it inconvenient for the existing equipment to completely grind the inner wall of the chair back frame when processing it, resulting in poor grinding effect of the existing equipment.

[0005] At the same time, the existing one-piece chair back frame is not convenient to transport during processing, so that the existing equipment needs to be transported and polished during processing, which is inconvenient and affects work efficiency. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art that it is inconvenient to turn over and grind the chair back frame, resulting in inconvenience in grinding, it is inconvenient to grind the inner hole structure of the chair back frame, and the effect is poor, and it is inconvenient to transport the chair back frame, which affects work efficiency. A production device for an integrated chair back frame with adjustable backrest height is proposed.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A production device for an integrated chair back frame with adjustable backrest height is designed, comprising a frame and supporting legs, wherein the lower end of the frame is fixedly connected to a plurality of supporting legs, a grinding device is provided on the left side of the upper end of the frame, the lower ends of the plurality of supporting legs are respectively fixedly connected to two bottom plates, the bottom plates on both sides are respectively fixedly connected to the two ends of two cross beams, a conveying device is provided at the upper end of the cross beam, the outer wall of the frame is symmetrically fixedly connected to sliding rods, the outer walls of the sliding rods on both sides are slidably connected to two sliders, the plurality of sliders are fixedly connected to the frame, and the outer wall of the frame is provided with a flipping device.

[0009] Preferably, the conveying device comprises a motor 1, a vertical plate, a threaded rod, a bent plate and a horizontal plate;

[0010] The motor 1 is fixedly connected to the cross beam on one side through the motor frame, the output shaft of the motor 1 is fixedly connected to one end of the threaded rod, the other end of the threaded rod is rotatably connected to the bent plate through a bearing, the lower end of the bent plate is fixedly connected to the cross beam on the other side, the outer wall of the threaded rod is threadedly connected to the threaded hole opened on the surface of the cross plate, the two ends of the cross plate are respectively fixedly connected to the two vertical plates, and the upper ends of the vertical plates on both sides are fixedly connected to the frame.

[0011] Preferably, a bracket is fixedly connected to the right side of the lower end of the frame, the bracket is fixedly connected to the hydraulic cylinder, the telescopic end of the hydraulic cylinder is fixedly connected to a round rod, the outer wall of the round rod is slidably connected to the frame, and one end of the round rod is fixedly connected to the square plate.

[0012] Preferably, one end of the sliding rods on both sides are fixedly connected to two inclined blocks respectively, and the inclined blocks on both sides are fixedly connected to the frame.

[0013] Preferably, a conveyor belt is provided at the rear end of the frame, and an adjustable backrest frame is placed at the upper end of the conveyor belt.

[0014] Preferably, the upper end of the frame is symmetrically fixedly connected to a support arm, and the support arms on both sides are rotatably connected to the rotating shaft through bearings. One end of the rotating shaft passes through the support arm on one side, and one end of the rotating shaft is fixedly connected to the output shaft of motor 2.

[0015] Preferably, the second motor is fixedly connected to the frame via a motor frame, the outer wall of the rotating shaft is fixedly connected to a sponge roller, and the outer wall of the sponge roller is bonded with sandpaper.

[0016] Preferably, the flipping device comprises a right-angle plate, a cylinder, a third motor, a first gear, a second gear, a round block, a connecting rod and a disc;

[0017] The upper end of the right-angle plate is fixedly connected to the frame, the right-angle plate is fixedly connected to motor three through a motor frame, the output shaft of motor three is fixedly connected to the rotating shaft of gear two, the rotating shaft of gear two is rotatably connected to the right-angle plate through a bearing, the gear two is meshed with gear one, the rotating shaft of gear one is fixedly connected to a connecting rod, the outer wall of the connecting rod is rotatably connected to the frame through a bearing, the connecting rod is connected to the cylinder thread through a thread opened on the outer wall, a rubber pad is provided at one end of the cylinder, the round blocks on both sides are fixedly connected to the frame, and the disc is rotatably connected to the frame through a bearing.

[0018] Preferably, the grinding device comprises a grinding block, a first circular plate, a fourth motor, a third gear, a cylinder, a second circular plate, a fourth gear, a support plate, a spring, a straight plate, a straight rod and a rotating rod;

[0019] The lower end of the support plate is fixedly connected to the frame, the upper end of the support plate is fixedly connected to the cylinder, the telescopic end of the cylinder is fixedly connected to the first circular plate, the first circular plate is rotatably connected to the rotating rod through a bearing, the upper end of the rotating rod is fixedly connected to the rotating shaft of gear three, the gear three is meshed with gear four, the lower end of the rotating shaft of gear four is rotatably connected to the first circular plate through a bearing, the upper end of the rotating shaft of gear four is fixedly connected to the output shaft of motor four, the motor four is fixedly connected to the first circular plate through a motor frame, the lower end of the rotating rod is fixedly connected to the second circular plate, the center of the lower end of the second circular plate is fixedly connected to a straight plate, the surface of the straight plate is provided with multiple groups of through holes, the straight plate is slidably connected to multiple straight rods through the multiple groups of through holes provided on the surface, one end of the multiple straight rods is fixedly connected to two grinding blocks respectively, and the grinding blocks and straight plates on both sides are fixedly connected to the two ends of multiple springs respectively.

[0020] Preferably, a method for using a production device for an integrated chair back frame with adjustable backrest height is as follows: first, the conveyor belt is controlled to work to transport a plurality of adjustable backrest frames, an operator places the adjustable backrest frame inside a frame so that one side of the adjustable backrest frame fits with a disc, and at the same time the operator rotates the cylinder, and under the action of the thread on the surface of the connecting rod, one end of the cylinder moves toward the adjustable backrest frame, and the adjustable backrest frame can be clamped with the cooperation of the cylinder and the disc, and the hydraulic cylinder is controlled to work so that the telescopic end of the hydraulic cylinder is extended to drive the round rod to move synchronously, so that the round rod can drive the square plate to fit tightly with the adjustable backrest frame, and at the same time, the adjustable backrest frame can be fit with the round block under the push of the square plate, and the adjustable backrest frame is further fixed, and the upper and lower surfaces of the fixed adjustable backrest frame both exceed the upper and lower surfaces of the frame.

[0021] S1: Transportation and grinding process: Control motor 1 to work, so that the output shaft of motor 1 rotates to drive the threaded rod to rotate synchronously, the rotation of the threaded rod can drive the horizontal plate to move, the horizontal plate can drive the frame to move synchronously through the vertical plates on both sides, the frame can slide on the surface of the slide rods on both sides through four sliders, so that the frame can drive the adjustable backrest frame to move, control motor 2 to work, start the output shaft of motor 2 to rotate to drive the rotating shaft to rotate, the rotation of the rotating shaft can drive the sponge roller and sandpaper to rotate synchronously, when the adjustable backrest frame passes through the lower end of the sandpaper, the adjustable backrest frame can be brought into contact with the sandpaper, and at the same time, the sponge roller can be deformed, so that the sandpaper can be more closely attached to the surface of the adjustable backrest frame, when the adjustable backrest frame has completely passed through the sandpaper, the grinding of one side surface is completed, when the horizontal plate moves to the limit position of the threaded rod, stop motor 1, and the frame moves to the bottom of the first circular plate.

[0022] S2: Inner wall grinding process: Control the cylinder to work, so that the telescopic end of the cylinder extends to drive the first circular plate to move downward, and the first circular plate can drive the second circular plate to move synchronously through the rotating rod, so that the second circular plate drives the grinding blocks on both sides to move to the inner wall of the adjustable backrest frame through the straight plate, and control the motor 4 to work, so that the output shaft of the motor 4 rotates to drive the gear 4 to rotate synchronously, and the gear 4 can drive the gear 3 to rotate synchronously, and the gear 3 can drive the second circular plate to rotate synchronously through the rotating rod, so that the second circular plate can drive the four straight plates on both sides through the straight plate. The rods rotate synchronously, so that the four straight rods can drive the grinding blocks on both sides to rotate synchronously, so that the sandpaper with the same surface as the sandpaper on the grinding blocks on both sides can grind the inner wall of the adjustable backrest frame. The inner wall of the adjustable backrest frame is an irregular surface. Under the effect of the deformation of the grinding blocks, the sandpaper on the surface of the grinding blocks can be more closely fitted to the inner wall of the adjustable backrest frame. At the same time, under the effect of the four springs, the four springs can push the grinding blocks on both sides to always keep in contact with the inner wall of the adjustable backrest frame, thereby completing the grinding of the inner wall of the adjustable backrest frame.

[0023] S3: Turning process: after the upper surface of the adjustable backrest frame is polished, the telescopic end of the hydraulic cylinder is started to shorten so that the square plate is no longer pressed against the adjustable backrest frame, the external power supply of the motor three is controlled, and the output shaft of the motor three is started to rotate to drive the gear two to rotate synchronously. At the same time, the gear two can drive the gear one to rotate synchronously. The rotation of the gear one can drive the cylinder to rotate synchronously through the connecting rod, so that the cylinder can drive the adjustable backrest frame and the disc to rotate synchronously. The rotation angle of the connecting rod is opposite to the rotation angle of the cylinder when clamping. After the frame rotates 180°, the motor three is stopped. At this time, the adjustable backrest frame is flipped over, and the output shaft of the motor one is started to rotate in the opposite direction so that the frame can move back to its original position, so that the lower end of the adjustable backrest frame can contact the sandpaper again. When the frame returns to its original position, the polishing process of one adjustable backrest frame is completed. After removing one adjustable backrest frame, a new adjustable backrest frame can be installed again for further processing.

[0024] The present invention proposes a production device for an integrated chair back frame with adjustable backrest height, and its beneficial effects are: through the cooperation of the flipping device, the hydraulic cylinder, the round rod, the square plate and the frame, the output shaft of the motor three rotates to drive the gear two to rotate synchronously, so that the cylinder can drive the adjustable backrest frame and the disc to rotate synchronously, and the rotation angle of the connecting rod is opposite to the rotation angle of the cylinder during clamping. When the frame rotates 180°, the motor three is stopped. At this time, the adjustable backrest frame is flipped, and the output shaft of the motor one is started to rotate in the opposite direction, so that the frame can move back to its original position, so that the lower end of the adjustable backrest frame can contact the sandpaper again, and the adjustable backrest frame can be turned over and polished, which makes the present invention more convenient when polishing.

[0025] Through the cooperation of the grinding device, the frame and the frame body, the telescopic end of the cylinder is extended to drive the first circular plate to move downward, and the first circular plate can drive the second circular plate to move synchronously through the rotating rod, so that the second circular plate drives the grinding blocks on both sides to move to the inner wall of the adjustable backrest frame through the straight plate. The output shaft of the motor four rotates to drive the gear four to rotate synchronously, so that the second circular plate can drive the four straight rods on both sides to rotate synchronously through the straight plate, so that the four straight rods can drive the grinding blocks on both sides to rotate synchronously, so that the sandpaper with the same surface as the sandpaper on the grinding blocks on both sides can grind the inner wall of the adjustable backrest frame, and the four springs can push the grinding blocks on both sides to always keep in contact with the inner wall of the adjustable backrest frame, so as to complete the grinding of the inner wall of the adjustable backrest frame. By grinding the inner wall of the adjustable backrest frame, the present invention can increase the grinding area of ​​the adjustable backrest frame during grinding, thereby improving the grinding effect.

[0026] Through the cooperation of the conveying device, the frame, the crossbeam and the frame, the motor one is controlled to work, so that the output shaft of the motor one rotates to drive the threaded rod to rotate synchronously, so that the frame can slide on the surfaces of the slide rods on both sides through four sliders, so that the frame can drive the adjustable backrest frame to move, and the output shaft of the start-up motor 2 is rotated to drive the rotating shaft to rotate. The rotation of the rotating shaft can drive the sponge roller and the sandpaper to rotate synchronously. When the adjustable backrest frame passes through the lower end of the sandpaper, the adjustable backrest frame can be brought into contact with the sandpaper. When the adjustable backrest frame has completely passed through the sandpaper, the grinding of one side surface is completed, and the reciprocating motion of the frame drives the adjustable backrest frame to move synchronously, making the device more convenient during transportation and grinding, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the appearance structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 The right view state diagram of ;

[0029] Figure 3 For the present invention Figure 1 Schematic diagram of the left view at the middle frame;

[0030] Figure 4 For the present invention Figure 1 Schematic diagram of the middle frame;

[0031] Figure 5 For the present invention Figure 1 Schematic diagram of the middle frame looking up;

[0032] Figure 6 For the present invention Figure 1 Schematic diagram of the middle flip device;

[0033] Figure 7 For the present invention Figure 1 Schematic diagram of the middle grinding device;

[0034] Figure 8 For the present invention Figure 1 Schematic diagram of the middle grinding device when viewed from above.

[0035] In the figure: 1, frame, 2, turning device, 201, right angle plate, 202, cylinder, 203, motor three, 204, gear one, 205, gear two, 206, round block, 207, connecting rod, 208, disc, 3, bracket, 4, hydraulic cylinder, 5, beam, 6, slide bar, 7, slide block, 8, conveying device, 801, motor one, 802, vertical plate, 803, threaded rod, 804, bent plate, 805, horizontal plate, 9, grinding device, 901, grinding block, 902, first Round plate, 903, motor four, 904, gear three, 905, cylinder, 906, second round plate, 907, gear four, 908, support plate, 909, spring, 910, straight plate, 911, straight rod, 912, rotating rod, 10, bottom plate, 11, rotating shaft, 12, supporting leg, 13, sandpaper, 14, supporting arm, 15, motor two, 16, adjustable backrest frame, 17, conveyor belt, 18, frame, 19, oblique block, 20, sponge roller, 21, round rod, 22, square plate. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings:

[0037] See attached Figure 1-8 In the present embodiment, a production device for an integrated chair back frame with adjustable backrest height comprises a frame 1 and support legs 12, a plurality of support legs 12 are fixedly connected to the lower end of the frame 1, a grinding device 9 is provided on the left side of the upper end of the frame 1, the lower ends of the plurality of support legs 12 are respectively fixedly connected to two bottom plates 10, the bottom plates 10 on both sides are respectively fixedly connected to the two ends of two cross beams 5, a conveying device 8 is provided on the upper end of the cross beam 5, the outer wall of the frame 1 is symmetrically fixedly connected to slide bars 6, the outer walls of the slide bars 6 on both sides are slidably connected to two sliders 7, four sliders 7 are provided, the plurality of sliders 7 are fixedly connected to the frame 18, and the outer wall of the frame 18 is provided with a flipping device 2

[0038] The transport device 8 includes a motor 801, a vertical plate 802, a threaded rod 803, a bent plate 804 and a horizontal plate 805;

[0039] Motor 801 is fixedly connected to the crossbeam 5 on one side through a motor frame. Motor 801 can meet work needs according to actual needs. Motor 801 can drive threaded rod 803 to rotate. The output shaft of motor 801 is fixedly connected to one end of threaded rod 803. The other end of threaded rod 803 is rotatably connected to bent plate 804 through a bearing. The lower end of bent plate 804 is fixedly connected to the crossbeam 5 on the other side. The outer wall of threaded rod 803 is threadedly connected to the threaded hole opened on the surface of cross plate 805. Threaded rod 803 can drive cross plate 805 to move. The two ends of cross plate 805 are respectively fixedly connected to the two vertical plates 802. The cross plate 805 can drive the vertical plates 802 on both sides to move synchronously. The upper ends of the vertical plates 802 on both sides are fixedly connected to the frame 1.

[0040] Through the cooperation of the conveying device 8, the frame 18, the crossbeam 5 and the frame 1, the motor 801 is controlled to work, so that the output shaft of the motor 801 rotates to drive the threaded rod 803 to rotate synchronously, so that the frame 18 can slide on the surfaces of the slide bars 6 on both sides through the four sliders 7, so that the frame 18 can drive the adjustable backrest frame 16 to move, and the output shaft of the start motor 2 15 is rotated to drive the rotating shaft 11 to rotate. The rotation of the rotating shaft 11 can drive the sponge roller 20 and the sandpaper 13 to rotate synchronously. When the adjustable backrest frame 16 passes through the lower end of the sandpaper 13, the adjustable backrest frame 16 can be brought into contact with the sandpaper 13. When the adjustable backrest frame 16 completely passes through the sandpaper 13, the grinding of one side surface is completed. The reciprocating motion of the frame 18 drives the adjustable backrest frame 16 to move synchronously, making the device more convenient during transportation and grinding, and improving work efficiency.

[0041] A bracket 3 is fixedly connected to the right side of the lower end of the frame 18, and the bracket 3 is fixedly connected to the hydraulic cylinder 4. The hydraulic cylinder 4 can meet the working needs according to actual needs. The telescopic end of the hydraulic cylinder 4 is fixedly connected to the round rod 21, and the outer wall of the round rod 21 is slidably connected to the frame 18. One end of the round rod 21 is fixedly connected to the square plate 22.

[0042] One end of the sliding rods 6 on both sides is fixedly connected to two inclined blocks 19 respectively, and the inclined blocks 19 on both sides are fixedly connected to the frame 1.

[0043] A conveyor belt 17 is provided at the rear end of the frame 1 . The conveyor belt 17 can be adjusted according to actual needs to meet working requirements. An adjustable backrest frame 16 is placed on the upper end of the conveyor belt 17 .

[0044] The upper end of the frame 1 is symmetrically fixedly connected with a support arm 14, and the support arms 14 on both sides are rotatably connected to the rotating shaft 11 through bearings. One end of the rotating shaft 11 passes through the support arm 14 on one side, and one end of the rotating shaft 11 is fixedly connected to the output shaft of the motor 2 15. The motor 2 15 can meet the working needs according to actual needs.

[0045] Motor 2 15 is fixedly connected to frame 1 through a motor frame, and a sponge roller 20 is fixedly connected to the outer wall of the rotating shaft 11. The sponge roller 20 can be deformed so that the sandpaper 13 on the surface of the sponge roller 20 can fit more closely with the adjustable backrest frame 16. The outer wall of the sponge roller 20 is bonded with sandpaper 13, and sandpaper 13 of different specifications can be selected according to the required degree of smoothness.

[0046] The turning device 2 includes a right angle plate 201, a cylinder 202, a motor 3 203, a gear 1 204, a gear 2 205, a round block 206, a connecting rod 207 and a disc 208;

[0047] The upper end of the right-angle plate 201 is fixedly connected to the frame 18, and the right-angle plate 201 is fixedly connected to the motor three 203 through the motor frame. The motor three 203 can meet the working needs according to actual needs. The output shaft of the motor three 203 is fixedly connected to the rotating shaft of the gear two 205, and the rotating shaft of the gear two 205 is rotatably connected to the right-angle plate 201 through a bearing. The gear two 205 is meshed with the gear one 204, and the rotating shaft of the gear one 204 is fixedly connected to the connecting rod 207. The outer wall of the connecting rod 207 is rotatably connected to the frame 18 through a bearing. The connecting rod 207 is threadably connected to the cylinder 202 through a thread opened on the outer wall. A rubber pad is provided at one end of the cylinder 202, and the round blocks 206 on both sides are fixedly connected to the frame 18. The disk 208 is rotatably connected to the frame 18 through a bearing, and a rubber pad is provided at one end of the disk 208.

[0048] Through the cooperation of the flipping device 2, the hydraulic cylinder 4, the round rod 21, the square plate 22 and the frame 18, the output shaft of the motor three 203 rotates to drive the gear two 205 to rotate synchronously, so that the cylinder 202 can drive the adjustable backrest frame 16 and the disk 208 to rotate synchronously, and the rotation angle of the connecting rod 207 is opposite to the rotation angle of the cylinder 202 when clamping. When the frame 18 rotates 180°, the motor three 203 is stopped. At this time, the adjustable backrest frame 16 is flipped, and the output shaft of the start motor one 801 is rotated in the opposite direction, so that the frame 18 can move back to its original position, so that the lower end of the adjustable backrest frame 16 can contact the sandpaper 13 again, and the adjustable backrest frame 16 can be turned over and polished, which makes the present invention more convenient when polishing.

[0049] The grinding device 9 includes a grinding block 901, a first circular plate 902, a motor 903, a gear 904, a cylinder 905, a second circular plate 906, a gear 907, a support plate 908, a spring 909, a straight plate 910, a straight rod 911 and a rotating rod 912;

[0050] The lower end of the support plate 908 is fixedly connected to the frame 1, the upper end of the support plate 908 is fixedly connected to the cylinder 905, the telescopic end of the cylinder 905 is fixedly connected to the first circular plate 902, and the cylinder 905 can meet the working needs according to actual needs. The first circular plate 902 is rotatably connected to the rotating rod 912 through a bearing, and the upper end of the rotating rod 912 is fixedly connected to the rotating shaft of the gear three 904, the gear three 904 is meshed with the gear four 907, and the lower end of the rotating shaft of the gear four 907 is rotatably connected to the first circular plate 902 through a bearing, and the upper end of the rotating shaft of the gear four 907 is fixedly connected to the output shaft of the motor four 903, and the motor four 903 can meet the working needs according to actual needs. The motor four 903 is electrically The frame is fixedly connected to the first circular plate 902, the lower end of the rotating rod 912 is fixedly connected to the second circular plate 906, and the lower end center of the second circular plate 906 is fixedly connected to a straight plate 910, and a plurality of through holes are provided on the surface of the straight plate 910, and four through holes are provided on the surface of the straight plate 910. The straight plate 910 is slidingly connected to a plurality of straight rods 911 through the plurality of through holes provided on the surface. There are four straight rods 911, and one end of the plurality of straight rods 911 is fixedly connected to two grinding blocks 901 respectively. The grinding blocks 901 are made of sponge material, and sandpaper is bonded to the surface. The grinding blocks 901 and the straight plates 910 on both sides are fixedly connected to the two ends of a plurality of springs 909 respectively. The elastic coefficient of the spring 909 can meet the working needs according to actual needs.

[0051] Through the cooperation among the grinding device 9, the frame 1 and the frame body 18, the telescopic end of the cylinder 905 is extended to drive the first circular plate 902 to move downward, and the first circular plate 902 can drive the second circular plate 906 to move synchronously through the rotating rod 912, so that the second circular plate 906 drives the grinding blocks 901 on both sides to move to the inner wall fitting state of the adjustable backrest frame 16 through the straight plate 910, and the output shaft of the motor 4 903 rotates to drive the gear 4 907 to rotate synchronously, so that the second circular plate 906 can drive the four straight rods 911 on both sides to rotate synchronously through the straight plate 910. The four straight rods 911 can drive the grinding blocks 901 on both sides to rotate synchronously, so that the sandpapers with the same surfaces as the sandpaper 13 on the grinding blocks 901 on both sides can grind the inner wall of the adjustable backrest frame 16, and the four springs 909 can push the grinding blocks 901 on both sides to always keep in contact with the inner wall of the adjustable backrest frame 16 to complete the grinding of the inner wall of the adjustable backrest frame 16. By grinding the inner wall of the adjustable backrest frame 16, the present invention can increase the grinding area of ​​the adjustable backrest frame 16 during grinding and improve the grinding effect.

[0052] Working principle:

[0053] First, the conveyor belt 17 is controlled to work to transport several adjustable backrest frames 16. The operator places the adjustable backrest frame 16 into the frame 18 so that one side of the adjustable backrest frame 16 fits with the disc 208. At the same time, the operator rotates the cylinder 202. Under the action of the thread on the surface of the connecting rod 207, one end of the cylinder 202 moves toward the adjustable backrest frame 16. With the cooperation of the cylinder 202 and the disc 208, the adjustable backrest frame 16 can be clamped. The hydraulic cylinder 4 is controlled to work so that the telescopic end of the hydraulic cylinder 4 extends to drive the round rod 21 to move synchronously, so that the round rod 21 can drive the square plate 22 to fit tightly with the adjustable backrest frame 16. At the same time, under the push of the square plate 22, the adjustable backrest frame 16 can fit with the round block 206, and the adjustable backrest frame 16 is further fixed. The upper and lower surfaces of the fixed adjustable backrest frame 16 exceed the upper and lower surfaces of the frame 18.

[0054] S1: Conveying and grinding process: Control motor 1 801 to work, so that the output shaft of motor 1 801 rotates to drive the threaded rod 803 to rotate synchronously, the rotation of the threaded rod 803 can drive the horizontal plate 805 to move, the horizontal plate 805 can drive the frame 18 to move synchronously through the vertical plates 802 on both sides, the frame 18 can slide on the surfaces of the slide bars 6 on both sides through four sliders 7, so that the frame 18 can drive the adjustable backrest frame 16 to move, control motor 2 15 to work, start the output shaft of motor 2 15 to rotate to drive the rotating shaft 11 to rotate, the rotation of the rotating shaft 11 can drive the sponge roller 20 and the sandpaper 13 to rotate synchronously, when the adjustable backrest frame When 16 passes through the lower end of the sandpaper 13, the adjustable backrest frame 16 can be in contact with the sandpaper 13, and the sponge roller 20 can be deformed at the same time, so that the sandpaper 13 can be more closely attached to the surface of the adjustable backrest frame 16. When the adjustable backrest frame 16 has completely passed through the sandpaper 13, the grinding of one side of the surface is completed. When the sandpaper 13 needs to be replaced, the sandpaper 13 is cut open by a tool or the like, the sandpaper 13 is torn off, and the new sandpaper is adhered to the surface of the sponge roller 20 by glue or the like, so that the sandpaper 13 forms a closed loop. When the horizontal plate 805 moves to the limit position of the threaded rod 803, the motor 801 is stopped. At this time, the frame 18 moves to the bottom of the first circular plate 902.

[0055] S2: Inner wall grinding process: Control the cylinder 905 to work, so that the telescopic end of the cylinder 905 extends to drive the first circular plate 902 to move downward, and the first circular plate 902 can drive the second circular plate 906 to move synchronously through the rotating rod 912, so that the second circular plate 906 drives the grinding blocks 901 on both sides to move to the inner wall of the adjustable backrest frame 16 through the straight plate 910, and control the motor 4 903 to work, so that the output shaft of the motor 4 903 rotates to drive the gear 4 907 to rotate synchronously, and the gear 4 907 can drive the gear 3 904 to rotate synchronously, and the gear 3 904 can drive the second circular plate 906 to rotate synchronously through the rotating rod 912, so that the second circular plate 906 can drive the grinding blocks 901 on both sides to move to the inner wall of the adjustable backrest frame 16 through the straight plate 910. 10 drives the four straight rods 911 on both sides to rotate synchronously, so that the four straight rods 911 can drive the grinding blocks 901 on both sides to rotate synchronously, so that the sandpaper on the surface of the grinding blocks 901 on both sides and the sandpaper 13 can be used to grind the inner wall of the adjustable backrest frame 16. The inner wall of the adjustable backrest frame 16 is an irregular surface. Under the effect of the deformation of the grinding block 901, the sandpaper on the surface of the grinding block 901 can be more closely fitted to the inner wall of the adjustable backrest frame 16. At the same time, under the effect of the four springs 909, the four springs 909 can push the grinding blocks 901 on both sides to always keep in contact with the inner wall of the adjustable backrest frame 16, thereby completing the grinding of the inner wall of the adjustable backrest frame 16.

[0056] S3: Turning over process: After the upper surface of the adjustable backrest frame 16 is polished, the telescopic end of the hydraulic cylinder 4 is started to shorten so that the square plate 22 is no longer pressed against the adjustable backrest frame 16, and the external power supply of the control motor 3 203 is controlled to start the output shaft of the motor 3 203 to rotate and drive the gear 2 205 to rotate synchronously. At the same time, the gear 205 can drive the gear 1 204 to rotate synchronously. The rotation of the gear 1 204 can drive the cylinder 202 to rotate synchronously through the connecting rod 207, so that the cylinder 202 can drive the adjustable backrest frame 16 and the disc 208 to rotate synchronously. The rotation angle of the connecting rod 207 is opposite to the rotation angle of the cylinder 202 when clamping (for example, the cylinder 202 is rotated when clamping). Clockwise rotation can press against the adjustable backrest frame 16, and the connecting rod 207 rotates counterclockwise during rotation to prevent the threaded connection between the connecting rod 207 and the cylinder 202 from loosening during rotation). When the frame 18 rotates 180°, the motor three 203 is stopped. At this time, the adjustable backrest frame 16 is turned over, and the output shaft of the motor one 801 is started to rotate in the opposite direction, so that the frame 18 can move back to its original position, so that the lower end of the adjustable backrest frame 16 can contact the sandpaper 13 again. When the frame 18 returns to its original position, the grinding process of one adjustable backrest frame 16 is completed. After one adjustable backrest frame 16 is removed, a new adjustable backrest frame 16 can be installed again for further processing.

[0057] S4: Technical advantages:

[0058] By being able to turn over and grind the adjustable backrest frame 16, the present invention is more convenient during grinding; by being able to grind the inner wall of the adjustable backrest frame 16, the present invention can increase the grinding area of ​​the adjustable backrest frame 16 during grinding and improve the grinding effect; the reciprocating motion of the frame 18 drives the adjustable backrest frame 16 to move synchronously, making the device more convenient during transportation and grinding and improving work efficiency.

[0059] Although the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A production device for an integrated chair back frame with adjustable backrest height, comprising a frame (1) and support legs (12), wherein a plurality of support legs (12) are fixedly connected to the lower end of the frame (1), characterized in that: A grinding device (9) is provided on the left side of the upper end of the frame (1); the lower ends of the plurality of support legs (12) are respectively fixedly connected to two bottom plates (10); the bottom plates (10) on both sides are respectively fixedly connected to the two ends of two cross beams (5); a conveying device (8) is provided on the upper end of the cross beam (5); the outer wall of the frame (1) is symmetrically fixedly connected to sliding rods (6); the outer walls of the sliding rods (6) on both sides are slidably connected to two sliding blocks (7); the plurality of sliding blocks (7) are fixedly connected to the frame (18); and the outer wall of the frame (18) is provided with a turning device (2).

2. The production device of an integrated chair back frame with adjustable backrest height according to claim 1, characterized in that: The conveying device (8) comprises a motor 1 (801), a vertical plate (802), a threaded rod (803), a bent plate (804) and a horizontal plate (805); The motor 1 (801) is fixedly connected to the cross beam (5) on one side through a motor frame, the output shaft of the motor 1 (801) is fixedly connected to one end of a threaded rod (803), the other end of the threaded rod (803) is rotationally connected to a bent plate (804) through a bearing, the lower end of the bent plate (804) is fixedly connected to the cross beam (5) on the other side, the outer wall of the threaded rod (803) is threadedly connected to a threaded hole provided on the surface of the cross plate (805), the two ends of the cross plate (805) are respectively fixedly connected to two vertical plates (802), and the upper ends of the vertical plates (802) on both sides are fixedly connected to the frame (1).

3. The production device of an integrated chair back frame with adjustable backrest height according to claim 1, characterized in that: A bracket (3) is fixedly connected to the right side of the lower end of the frame (18); the bracket (3) is fixedly connected to the hydraulic cylinder (4); the telescopic end of the hydraulic cylinder (4) is fixedly connected to a round rod (21); the outer wall of the round rod (21) is slidably connected to the frame (18); and one end of the round rod (21) is fixedly connected to a square plate (22).

4. The production device of an integrated chair back frame with adjustable backrest height according to claim 1, characterized in that: One end of the sliding rod (6) on both sides is fixedly connected to two inclined blocks (19) respectively, and the inclined blocks (19) on both sides are fixedly connected to the frame (1).

5. The production device of an integrated chair back frame with adjustable backrest height according to claim 1, characterized in that: A conveyor belt (17) is provided at the rear end of the frame (1), and an adjustable backrest frame (16) is placed at the upper end of the conveyor belt (17).

6. The production device of an integrated chair back frame with adjustable backrest height according to claim 1, characterized in that: The upper end of the frame (1) is symmetrically fixedly connected to a support arm (14), and the support arms (14) on both sides are rotatably connected to the rotating shaft (11) through bearings. One end of the rotating shaft (11) passes through the support arm (14) on one side, and one end of the rotating shaft (11) is fixedly connected to the output shaft of the second motor (15).

7. The production device of an integrated chair back frame with adjustable backrest height according to claim 6, characterized in that: The second motor (15) is fixedly connected to the frame (1) via a motor frame, the outer wall of the rotating shaft (11) is fixedly connected to a sponge roller (20), and the outer wall of the sponge roller (20) is bonded with sandpaper (13).

8. The production device of an integrated chair back frame with adjustable backrest height according to claim 1, characterized in that: The turning device (2) comprises a right-angle plate (201), a cylinder (202), a third motor (203), a first gear (204), a second gear (205), a round block (206), a connecting rod (207) and a round disc (208); The upper end of the right-angle plate (201) is fixedly connected to the frame (18); the right-angle plate (201) is fixedly connected to the motor three (203) through a motor frame; the output shaft of the motor three (203) is fixedly connected to the rotating shaft of the gear two (205); the rotating shaft of the gear two (205) is rotationally connected to the right-angle plate (201) through a bearing; the gear two (205) is meshed with the gear one (204); the rotating shaft of the gear one (204) is fixedly connected to a connecting rod (207); the outer wall of the connecting rod (207) is rotationally connected to the frame (18) through a bearing; the connecting rod (207) is threadedly connected to the cylinder (202) through a thread provided on the outer wall; a rubber pad is provided at one end of the cylinder (202); the round blocks (206) on both sides are fixedly connected to the frame (18); and the disc (208) is rotationally connected to the frame (18) through a bearing.

9. The production device of an integrated chair back frame with adjustable backrest height according to claim 1, characterized in that: The grinding device (9) comprises a grinding block (901), a first circular plate (902), a fourth motor (903), a third gear (904), a cylinder (905), a second circular plate (906), a fourth gear (907), a support plate (908), a spring (909), a straight plate (910), a straight rod (911) and a rotating rod (912); The lower end of the support plate (908) is fixedly connected to the frame (1), the upper end of the support plate (908) is fixedly connected to the cylinder (905), the telescopic end of the cylinder (905) is fixedly connected to the first circular plate (902), the first circular plate (902) is rotatably connected to the rotating rod (912) via a bearing, the upper end of the rotating rod (912) is fixedly connected to the rotating shaft of gear three (904), the gear three (904) is meshed with gear four (907), the lower end of the rotating shaft of gear four (907) is rotatably connected to the first circular plate (902) via a bearing, the upper end of the rotating shaft of gear four (907) is rotatably connected to the output shaft of motor four (903), and the transmission shaft of motor four (903) is connected to the transmission shaft of motor four (903). The output shaft is fixedly connected, the motor four (903) is fixedly connected to the first circular plate (902) through the motor frame, the lower end of the rotating rod (912) is fixedly connected to the second circular plate (906), the lower end center of the second circular plate (906) is fixedly connected to a straight plate (910), a plurality of groups of through holes are opened on the surface of the straight plate (910), the straight plate (910) is slidingly connected to a plurality of straight rods (911) through the plurality of through holes opened on the surface, one end of the plurality of straight rods (911) is fixedly connected to two grinding blocks (901), and the grinding blocks (901) and the straight plate (910) on both sides are fixedly connected to the two ends of a plurality of springs (909).

10. A method for using a production device for an integrated chair back frame with adjustable backrest height according to any one of claims 1 to 9, characterized in that: First, the conveyor belt (17) is controlled to work to transport a plurality of adjustable backrest frames (16). The operator places the adjustable backrest frames (16) inside the frame (18) so that one side of the adjustable backrest frames (16) fits with the disc (208). At the same time, the operator rotates the cylinder (202). Under the action of the thread on the surface of the connecting rod (207), one end of the cylinder (202) moves toward the adjustable backrest frames (16). With the cooperation of the cylinder (202) and the disc (208), the adjustable backrest frames (16) can be adjusted. The backrest frame (16) is clamped and the hydraulic cylinder (4) is controlled to work, so that the telescopic end of the hydraulic cylinder (4) is extended to drive the round rod (21) to move synchronously, so that the round rod (21) can drive the square plate (22) to fit closely with the adjustable backrest frame (16), and at the same time, the adjustable backrest frame (16) and the round block (206) can be fit together under the push of the square plate (22), and the adjustable backrest frame (16) is further fixed. After being fixed, the upper and lower surfaces of the adjustable backrest frame (16) both exceed the upper and lower surfaces of the frame (18). S1: Conveying and grinding process: Control motor 1 (801) to work, so that the output shaft of motor 1 (801) rotates to drive the threaded rod (803) to rotate synchronously, the rotation of the threaded rod (803) can drive the horizontal plate (805) to move, the horizontal plate (805) can drive the frame (18) to move synchronously through the vertical plates (802) on both sides, the frame (18) can slide on the surfaces of the slide bars (6) on both sides through four sliders (7), so that the frame (18) can drive the adjustable backrest frame (16) to move, control motor 2 (15) to work, start the output shaft of motor 2 (15) to rotate and drive the rotating shaft (11) to rotate, the rotating shaft The rotation of (11) can drive the sponge roller (20) and the sandpaper (13) to rotate synchronously. When the adjustable backrest frame (16) passes the lower end of the sandpaper (13), the adjustable backrest frame (16) can be brought into contact with the sandpaper (13). At the same time, the sponge roller (20) can be deformed so that the sandpaper (13) can be more closely attached to the surface of the adjustable backrest frame (16). When the adjustable backrest frame (16) completely passes the sandpaper (13), the grinding of one side of the surface is completed. When the horizontal plate (805) moves to the limit position of the threaded rod (803), the motor 1 (801) is stopped. At this time, the frame (18) moves to the bottom of the first circular plate (902). S2: Inner wall grinding process: the cylinder (905) is controlled to work, so that the telescopic end of the cylinder (905) is extended to drive the first circular plate (902) to move downward, and the first circular plate (902) can drive the second circular plate (906) to move synchronously through the rotating rod (912), so that the second circular plate (906) drives the grinding blocks (901) on both sides to move to the inner wall of the adjustable backrest frame (16) through the straight plate (910), and the motor four (903) is controlled to work, so that the output shaft of the motor four (903) rotates to drive the gear four (907) to rotate synchronously, and the gear four (907) can drive the gear three (904) to rotate synchronously, and the gear three (904) can drive the second circular plate (906) to rotate synchronously through the rotating rod (912), so that the second circular plate (906) can rotate synchronously through the straight plate (910). The straight plate (910) drives the four straight rods (911) on both sides to rotate synchronously, so that the four straight rods (911) can drive the grinding blocks (901) on both sides to rotate synchronously, so that the sandpaper on the surfaces of the grinding blocks (901) on both sides, which is the same as the sandpaper (13), can grind the inner wall of the adjustable backrest frame (16). The inner wall of the adjustable backrest frame (16) is an irregular surface. Under the action of the grinding block (901) being deformable, the sandpaper on the surface of the grinding block (901) can be more closely fitted to the inner wall of the adjustable backrest frame (16). At the same time, under the action of the four springs (909), the four springs (909) can push the grinding blocks (901) on both sides to always maintain a state of being in contact with the inner wall of the adjustable backrest frame (16), thereby completing the grinding of the inner wall of the adjustable backrest frame (16). S3: Turning process: After the upper surface of the adjustable backrest frame (16) is polished, the telescopic end of the hydraulic cylinder (4) is shortened so that the square plate (22) is no longer pressed against the adjustable backrest frame (16), and the external power supply of the motor three (203) is controlled to start the output shaft of the motor three (203) to rotate and drive the gear two (205) to rotate synchronously. At the same time, the gear two (205) can drive the gear one (204) to rotate synchronously. The rotation of the gear one (204) can drive the cylinder (202) to rotate synchronously through the connecting rod (207), so that the cylinder (202) can drive the adjustable backrest frame (16) and the disk (208) to rotate synchronously. The rotation angle of the connecting rod (207) is opposite to the rotation angle of the cylinder (202) during clamping. When the frame (18) rotates 180°, the motor three (203) is stopped. At this time, the adjustable backrest frame (16) is flipped, and the output shaft of the motor one (801) is started to rotate in the opposite direction, so that the frame (18) can move back to its original position, so that the lower end of the adjustable backrest frame (16) can contact the sandpaper (13) again. When the frame (18) returns to its original position, the grinding process of one adjustable backrest frame (16) is completed. After removing one adjustable backrest frame (16), a new adjustable backrest frame (16) is installed again for further processing.

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