Bending device for office chair machining

Abstract

The utility model relates to the technical field of steel bending devices, in particular to a bending device for office chair processing, which comprises a box body and side plates, the two sides of the upper surface of the box body are fixedly connected with the side plates, and the two sides of the upper end of the middle of the box body are provided with auxiliary limiting devices. An auxiliary protection device is arranged in the box body, a second hydraulic cylinder is fixedly connected to the lower end of the top plate, a pressing roller is fixedly connected to the telescopic end of the second hydraulic cylinder, and the office chair steel part is limited through a stop lever through cooperation of an auxiliary limiting device and the auxiliary protection device; according to the office chair steel part bending device, bending failure caused by deviation of a steel part when the office chair steel part is bent is avoided, the working quality is improved, a second sliding block drives a baffle to move upwards and then stop, when the office chair steel part flies out when being bent, the steel part can be bounced on the surface of the baffle, an operator cannot be hurt, and the working safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bending devices, in particular to a bending device for office chair processing. Background Art

[0002] An office chair refers to various chairs equipped for work convenience in daily work and social activities. When an office chair is processed, it needs to be bent.

[0003] For example, a steel bending device for office chair manufacturing with the authorization announcement number of "CN218692773U" drives the moving column to move relatively through the moving block, and the moving column drives the baffle to move relatively, so that the baffle shields both sides of the steel piece. When bending, the second hydraulic rod drives the mounting seat to move downward, and the mounting seat drives the pressing wheel to move downward. When the pressing wheel presses down on the center of the steel piece, the steel piece will roll through the top wheel and be bent and shaped. However, when this device bends the steel piece of the office chair, the baffle can only limit the two ends of the steel piece, resulting in the offset of the steel piece during bending, bending failure, reducing the working quality of this device. When this device bends the steel piece, it is easy to cause the steel piece to break and fly out of the device interior, causing injury to the operator and reducing the working safety of this device. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems that the baffle can only limit the two ends of the steel piece, resulting in the offset of the steel piece during bending, bending failure, reducing the working quality of this device, and when bending the steel piece, it is easy to cause the steel piece to break and fly out of the device interior, causing injury to the operator and reducing the working safety of this device, and to propose a bending device for office chair processing.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] Design a bending device for office chair processing, including a box body and side plates. Both sides of the upper surface of the box body are fixedly connected with side plates. Auxiliary limiting devices are arranged at both sides of the upper part of the middle of the box body. An auxiliary protection device is arranged inside the box body. The upper ends of the side plates are fixedly connected with a top plate. A second hydraulic cylinder is fixedly connected to the lower end of the top plate. The telescopic end of the second hydraulic cylinder is fixedly connected with a pressing roller.

[0007] Preferably, the auxiliary limiting device includes a first hydraulic cylinder and a first housing. The lower end of the first housing is fixedly connected with the box body. The lower part of the inner surface of the first housing is fixedly connected with a first hydraulic cylinder. The telescopic end of the first hydraulic cylinder is fixedly connected with a push block. The upper end of the push block is slidably connected with an inclined block. One end of the inclined block is fixedly connected with a blocking rod. Both ends of the fixing block are fixedly connected with the inner surface of the first housing.

[0008] Preferably, the bottom end of the blocking rod is slidably connected to the fixed block, and the outer wall of the blocking rod is slidably connected to the first housing.

[0009] Preferably, two sides of the middle upper part of the box body are fixedly connected with support plates, and the surfaces of the support plates are movably connected to the rotating shafts of the top rollers through bearings.

[0010] Preferably, the auxiliary protection device includes a motor and a double-headed stud. The motor is fixedly connected to the right side of the box body through a bracket. The output shaft of the motor is rotatably connected to the box body through a bearing. The output shaft of the motor is fixedly connected to the double-headed stud through a coupling. Two sides of the double-headed stud are respectively in threaded connection with threaded holes formed on the surfaces of threaded blocks. Two sides of each threaded block are movably connected to one end of a connecting rod through a pin shaft. The other ends of the connecting rods are movably connected to the surfaces of first sliders through pin shafts. A second slider is fixedly connected to the upper end of the first slider. A baffle is fixedly connected to one end of the second slider.

[0011] Preferably, the bottom end of the threaded block is slidably connected to the surface of the box body, and both ends of the first slider and the second slider are slidably connected to the inner surface of the box body.

[0012] For a bending device for processing office chairs proposed by the present utility model, the beneficial effects are as follows: Through the cooperation of the auxiliary limiting device and the auxiliary protection device, when the telescopic end of the first hydraulic cylinder shortens, it drives the push block to move downward. The push block drives the inclined blocks on both sides to move. The inclined blocks on both sides drive the blocking rods to approach each other, reducing the distance between the blocking rods and the steel parts of the office chair, and limiting the steel parts of the office chair. The steel parts of the office chair are limited by the blocking rods, preventing the steel parts from shifting during the bending of the steel parts of the office chair, resulting in bending failure, and improving the work quality.

[0013] When the output shaft of the motor rotates, it drives the double-headed stud to rotate. The rotation of the double-headed stud drives the threaded blocks on both sides to approach each other. The movement of the threaded blocks drives the first sliders to move upward through the connecting rods. The first sliders drive the second sliders and the baffles to move upward synchronously. After the baffle moves to the limit position, the rotation of the output shaft of the motor stops. When the steel parts of the office chair fly out during the bending of the steel parts of the office chair, they will bounce on the surface of the baffle, and will not cause harm to the operator, improving the work safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is Figure 1 a front cross-sectional view;

[0016] Figure 3 is Figure 1 a top cross-sectional view;

[0017] Figure 4 For Figure 2 the schematic view of part A in

[0018] Figure 5 For Figure 2 the side sectional view of the auxiliary limiting device in

[0019] Figure 6 For Figure 2 the top sectional view of the auxiliary limiting device in

[0020] Figure 7 For Figure 2 the side sectional view of the auxiliary protection device in

[0021] In the figure: 1. Box body, 2. Auxiliary limiting device, 201. First hydraulic cylinder, 202. First outer shell, 203. Pusher block, 204. Wedge block, 205. Stop bar, 206. Fixed block, 3. Auxiliary protection device, 301. Motor, 302. Double-headed stud, 303. Threaded block, 304. Connecting rod, 305. First slider, 306. Second slider, 307. Baffle plate, 4. Side plate, 5. Top plate, 6. Second hydraulic cylinder, 7. Pressing roller, 8. Support plate, 9. Top roller. Specific embodiments

[0022] The following further describes the present utility model with reference to the accompanying drawings:

[0023] Referring to the attached Figures 1-7 : In this embodiment, a bending device for processing office chairs includes a box body 1 and side plates 4. Both sides of the upper surface of the box body 1 are fixedly connected with side plates 4. Auxiliary limiting devices 2 are provided on both sides of the upper part of the middle of the box body 1. An auxiliary protection device 3 is provided inside the box body 1. The upper ends of the side plates 4 are fixedly connected with a top plate 5. A second hydraulic cylinder 6 is fixedly connected to the lower end of the top plate 5. The second hydraulic cylinder 6 can meet the working requirements according to actual needs. The telescopic end of the second hydraulic cylinder 6 is fixedly connected with a pressing roller 7, and the lower end surface of the pressing roller 7 is arc-shaped.

[0024] The bottom end of the stop bar 205 is slidably connected with the fixed block 206, the outer wall of the stop bar 205 is slidably connected with the first outer shell 202. Support plates 8 are fixedly connected to both sides of the upper middle part of the box body 1. The surfaces of the support plates 8 are both movably connected with the rotating shafts of the top rollers 9 through pins. The bottom end of the threaded block 303 is slidably connected with the box body 1. Both ends of the first slider 305 and the second slider 306 are slidably connected with the box body 1.

[0025] Referring to the attached Figures 1-6: The auxiliary limit device 2 includes a first hydraulic cylinder 201 and a first housing 202. The first hydraulic cylinder 201 can meet the working requirements according to actual needs. The lower end of the first housing 202 is fixedly connected to the box body 1. The lower part of the inner surface of the first housing 202 is fixedly connected with the first hydraulic cylinder 201. The telescopic end of the first hydraulic cylinder 201 is fixedly connected with a push block 203. The surface of the push block 203 is slidably connected with an inclined block 204. The movement of the push block 203 drives the inclined block 204 to slide inside the groove formed on the surface of the push block 203. One end of the inclined block 204 is fixedly connected with a stop rod 205. The movement of the inclined block 204 drives the stop rod 205 to move synchronously. Both ends of the fixed block 206 are fixedly connected to the inner surface of the first housing 202.

[0026] Refer to the attached Figures 1-3 and Figure 7: The auxiliary protection device 3 includes a motor 301 and a double-headed stud 302. The motor 301 is a servo motor and can meet the working requirements according to actual needs. The motor 301 is fixedly connected to the right side of the box body 1 through a bracket. The output shaft of the motor 301 is rotatably connected to the box body 1 through a bearing. The output shaft of the motor 301 is fixedly connected to the double-headed stud 302 through a coupling. The threads on both sides of the double-headed stud 302 are opposite. The two sides of the double-headed stud 302 are respectively threadedly connected to the threaded holes formed on the surface of the threaded block 303. The rotation of the double-headed stud 302 drives the two threaded blocks 303 to move in opposite directions. Both sides of the threaded block 303 are movably connected to one end of a connecting rod 304 through a pin shaft. The movement of the threaded block 303 drives the connecting rod 304 to move. The other ends of the connecting rods 304 are movably connected to the surface of a first slider 305 through a pin shaft. The movement of the connecting rod 304 drives the first slider 305 to move. The upper end of the first slider 305 is fixedly connected with a second slider 306. The first slider 305 drives the second slider 306 to move synchronously. One end of the second slider 306 is fixedly connected with a baffle 307. The second slider 306 drives the baffle 307 to move synchronously.

[0027] Working principle:

[0028] The operator places the steel parts of the office chair that need to be bent between the two stop rods 205 and on the surface of the top roller 9.

[0029] The auxiliary limit process of the steel parts of the office chair:

[0030] Connect the external power supply of the first hydraulic cylinder 201, start the telescopic end of the first hydraulic cylinder 201 to shorten and drive the push block 203 to move downward. The push block 203 drives the inclined blocks 204 on both sides to move, and the inclined blocks 204 on both sides drive the stop rods 205 to approach each other, reducing the distance between the stop rods 205 and the steel parts of the office chair, limiting the steel parts of the office chair, and facilitating the subsequent bending work on the steel parts of the office chair. According to the above operation, when it is necessary to increase the distance between the stop rods 205, start the telescopic end of the first hydraulic cylinder 201 to extend again to drive the two stop rods 205 to move away from each other, completing the auxiliary limiting process of the steel parts of the office chair and avoiding the offset of the steel parts when bending the steel parts of the office chair.

[0031] Auxiliary protection process during the bending of the steel parts of the office chair:

[0032] Connect the external power supply of the motor 301, start the output shaft of the motor 301 to rotate and drive the double-headed stud 302 to rotate. The rotation of the double-headed stud 302 drives the threaded blocks 303 on both sides to approach each other. The movement of the threaded blocks 303 drives the first slider 305 to move upward through the connecting rod 304. The first slider 305 drives the second slider 306 and the baffle 307 to move upward synchronously. After the baffle 307 moves to the limit position, stop the rotation of the output shaft of the motor 301, which facilitates the subsequent bending of the steel parts of the office chair. According to the above operation, start the output shaft of the motor 301 to reverse again to drive the baffle 307 to move downward to return to its original position, completing the auxiliary protection process for the bending of the steel parts of the office chair. When the steel parts of the office chair fly out during bending, they will bounce on the surface of the baffle 307 and will not cause harm to the operator.

[0033] Bending process of the steel parts of the office chair:

[0034] Connect the external power supply of the second hydraulic cylinder 6, start the telescopic end of the second hydraulic cylinder 6 to extend and drive the pressure roller 7 to move downward. After the surface of the pressure roller 7 abuts against the steel parts of the office chair, the steel parts are bent, and the top roller 9 plays a supporting role, completing the bending process of the steel parts of the office chair.

[0035] Although the present utility model has been illustrated and described by referring to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and details can be made within the scope of the claims.

Claims

1. A bending device for processing an office chair, comprising a box body (1) and side panels (4), wherein both sides of the upper surface of the box body (1) are fixedly connected to the side panels (4), characterized in that: Auxiliary limit devices (2) are provided on both sides of the upper middle end of the box body (1); an auxiliary protection device (3) is provided inside the box body (1); the upper end of the side plate (4) is fixedly connected to a top plate (5); the lower end of the top plate (5) is fixedly connected to a second hydraulic cylinder (6); the telescopic end of the second hydraulic cylinder (6) is fixedly connected to a pressure roller (7); the auxiliary protection device (3) comprises a motor (301) and a stud (302); the motor (301) is fixedly connected to the right side of the box body (1) through a bracket; the output shaft of the motor (301) is connected to the rotating shaft of the box body (1) through a bearing. The output shaft of the motor (301) is fixedly connected to the stud (302) via a coupling, the two sides of the stud (302) are respectively threadedly connected to threaded holes provided on the surface of the threaded block (303), the two sides of the threaded block (303) are movably connected to one end of a connecting rod (304) via a pin, the other end of the connecting rod (304) is movably connected to a first slider (305) via a pin, the upper end of the first slider (305) is fixedly connected to a second slider (306), and one end of the second slider (306) is fixedly connected to a baffle (307).

2. The bending device for office chair processing according to claim 1, characterized in that: The auxiliary limiting device (2) comprises a first hydraulic cylinder (201) and a first outer shell (202); the lower end of the first outer shell (202) is fixedly connected to the box body (1); the lower part of the inner surface of the first outer shell (202) is fixedly connected to the first hydraulic cylinder (201); the telescopic end of the first hydraulic cylinder (201) is fixedly connected to a push block (203); the upper end of the push block (203) is slidably connected to an inclined block (204); one end of the inclined block (204) is fixedly connected to a stop rod (205); and the inner surface of the first outer shell (202) is fixedly connected to both ends of a fixed block (206).

3. The bending device for office chair processing according to claim 2 is characterized in that: The bottom end of the blocking rod (205) is slidably connected to the fixing block (206), and the outer wall of the blocking rod (205) is slidably connected to the first housing (202).

4. The bending device for office chair processing according to claim 3 is characterized in that: Support plates (8) are fixedly connected to both sides of the upper middle portion of the box body (1), and surfaces of the support plates (8) are movably connected to the rotating shaft of the top roller (9) via bearings.

5. The bending device for office chair processing according to claim 4 is characterized in that: The bottom end of the threaded block (303) is slidably connected to the box body (1), and both ends of the first sliding block (305) and the second sliding block (306) are slidably connected to the box body (1).

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