Chair leg overturning and feeding mechanism for welding production line

Abstract

A chair leg overturning and feeding mechanism for a welding production line comprises a fixing base located between a conveying belt and a transferring mechanism, a stand column vertically installed on the fixing base, a sliding block installed on the stand column in a sliding mode, a grabbing mechanism installed on the sliding block and a driving mechanism installed on the fixing base. The driving mechanism drives the sliding block to slide up and down along the stand column to grab and transfer chair leg bodies on different layers of conveying platforms, the chair leg bodies are grabbed and lifted through a grabbing mechanism in the feeding mechanism, and the chair leg bodies are transferred to a transfer mechanism of a welding production line through a rotating seat and a supporting arm. The overturning device overturns the chair leg body to enable the bottom face of the chair leg body to face upwards, the driving mechanism drives the grabbing mechanism to move up and down, and the feeding mechanism can completely replace the manual material taking, overturning and feeding process, so that the labor cost is saved, the conflict between the labor cost and the labor cost is avoided, and the automation degree of a production line can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chair leg production, in particular to a chair leg turning and loading mechanism used in a welding production line. Background Art

[0002] The applicant has previously developed a molding process for one-piece chair legs. Referring to the Chinese patent application document with patent application number CN202211288191.7, the molding process includes a plate cutting process and a stamping process arranged in sequence. A fixing seat and a plurality of supporting legs are simultaneously stamped and bent using the same first metal plate by stamping, so that the fixing seat and the plurality of supporting legs are formed as one piece. The processing flow of the chair legs also includes an accessory welding process located after the stamping process; it is necessary to weld a shaft sleeve for inserting a pneumatic rod in the middle position of the chair leg body, and weld an inner bone for improving the supporting strength in the five supporting legs of the chair leg body to obtain a complete chair leg.

[0003] In the above structure, after the chair legs are stamped and formed, they are transported to the welding production line through a conveyor belt. Therefore, before welding, the chair legs on the conveyor belt need to be transferred, turned over, positioned and placed bottom-up on the welding equipment. In the traditional process, this multi-step operation process needs to be performed manually, so an additional worker needs to be arranged to be responsible for the loading work. Considering the work content, such work is relatively simple, single in content, and very easy, but considering the labor cost, such work is undoubtedly a waste of labor costs, and the workers' labor capacity cannot be fully utilized, but this is an indispensable job, so there is a conflict between the work content and labor cost. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a chair leg flipping and loading mechanism for a welding production line.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A chair leg flipping and loading mechanism for a welding production line comprises a fixed seat located between a conveyor belt and a transfer mechanism, a column vertically mounted on the fixed seat, a slider slidably mounted on the column, a grabbing mechanism mounted on the slider, and a driving mechanism mounted on the fixed seat, wherein the driving mechanism drives the slider to slide up and down along the column to grab and transfer the chair leg bodies on different levels of conveying platforms, a mounting seat extending horizontally on the slider, and the grabbing mechanism rotatably mounted on the mounting seat, the grabbing mechanism comprising a rotating seat rotatably mounted on the mounting seat, a support arm horizontally connected to the rotating seat, and a clamp mounted at the end of the support arm, the clamp grabs the chair leg body by grabbing one of its supporting legs, and a flipping device for driving the chair leg body to flip is also provided between the clamp and the support arm.

[0007] In the present invention, the rotation angle of the grabbing mechanism on the mounting seat is from 0° perpendicular to the conveyor belt side to 162° biased toward the transfer mechanism side.

[0008] In the present invention, the flipping device is a rotary cylinder, which drives the clamping claws to flip the chair foot body so that the bottom surface faces upward, and the rotation angle of the clamping claws is 180 degrees.

[0009] In the present invention, there are two groups of columns, and the two groups of columns are symmetrically installed. An installation gap for installing a driving mechanism is provided between the two groups of columns. The driving mechanism includes a driving motor installed on a fixed seat, a lifting rod vertically installed between the two groups of columns, and a gear set connected to the bottom of the lifting rod. The lifting rod is threadedly engaged with the slider, and the driving motor drives the lifting rod to rotate through the gear set, thereby driving the slider to rise and fall.

[0010] Furthermore, the outer sides of the two groups of columns are provided with sliding grooves, and the two sides of the slider are provided with ribs extending in the direction of the sliding grooves. The inner sides of the ribs are slidably matched with the sliding grooves, and the deflection force is offset by the ribs when the slider slides up and down.

[0011] In the present invention, the feeding mechanism further comprises a sensor device for controlling the operation of the conveyor belt. The sensor device is mounted on the column close to one side of the conveyor belt, and the sensor device is mounted at a height corresponding to the conveying platform.

[0012] Furthermore, the sensing device includes a photoelectric transmitter installed on the side of the column and a photoelectric receiver installed on the side of the conveyor belt away from the loading mechanism. The photoelectric transmitter emits a grating perpendicular to the conveyor belt. When the chair legs on the conveyor belt pass through the grating, they block the grating to form an electrical signal and control the conveyor belt on the corresponding conveying platform to stop conveying.

[0013] The utility model has the following advantages and beneficial effects: the chair foot body is grabbed and lifted by the grabbing mechanism in the feeding mechanism, the chair foot body is transferred to the transfer mechanism of the welding production line by the rotating seat and the supporting arm, the flipping device flips the chair foot body so that its bottom surface faces upward, and the driving mechanism drives the grabbing mechanism to move up and down. The feeding mechanism can completely replace the process of manual material picking, flipping and feeding, thereby saving labor costs, avoiding the conflict between labor costs and labor costs, and improving the degree of automation of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 2 is a side view of the feeding mechanism in this embodiment;

[0016] Figure 2 2 is a top view of the feeding mechanism in this embodiment;

[0017] Figure 3 This is a front view of the feeding mechanism in this embodiment;

[0018] Figure 4 for Figure 1 Magnified view of area A in center. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention, but the present invention is not limited to the following embodiments.

[0020] like Figures 1 to 4As shown, this embodiment discloses a chair leg flipping and loading mechanism for a welding production line, wherein the loading mechanism 3 is installed between a conveyor frame 1 and a welding production line, and the conveyor frame 1 includes at least two layers of conveying platforms 10 of different heights, and the conveying platforms 10 of different layers are used to convey chair leg bodies of the same structure but different appearances, so that chair leg bodies on different stamping production lines can be brought together to the same welding production line for welding, and the loading mechanism 3 transfers the chair leg bodies on the conveyor frame 1 to the transfer mechanism 2 of the welding production line, and the loading mechanism 3 includes a position between the conveyor frame 1 and the transfer mechanism 2. The fixed seat 30 is provided between the fixed seat 30, the column 31 vertically installed on the fixed seat 30, the slider 32 slidably installed on the column 31, the grabbing mechanism 33 installed on the slider 32 and the driving mechanism 34 installed on the fixed seat 30. The driving mechanism 34 drives the slider 32 to slide up and down along the column 31 so that the chair foot bodies on the conveying platforms 10 on different layers can be grabbed and transferred. The slider 32 is provided with a mounting seat 320 extending in the horizontal direction. The grabbing mechanism 33 is rotatably installed on the mounting seat 320. Since it is necessary to ensure that the chair foot body is correctly placed on the transfer mechanism 2, as shown in FIG. Figure 2 As shown, the rotation angle of the gripping mechanism 33 on the mounting seat 320 is from 0° perpendicular to the side of the conveyor frame 1 to 162° biased to the side of the transfer mechanism 2. Specifically, the gripping mechanism 33 includes a rotating seat 330 rotatably mounted on the mounting seat 320, a support arm 331 horizontally connected to the rotating seat 330, and a clamping claw 332 installed at the end of the support arm 331. Under normal circumstances, the support arm 331 is parallel to the conveyor frame 1 to prevent interference and collision when the slider 32 slides up and down. Preferably, the clamping claw 332 is a pneumatic finger, which grabs the chair foot body by grabbing one of the supporting legs. A flipping device 333 is also provided between the clamping claw 332 and the support arm 331. The flipping device 333 is a rotary cylinder, which drives the clamping claw 332 to rotate 180° through the flipping device 333, thereby flipping the chair foot body with the bottom surface facing up.

[0021] In this embodiment, there are two groups of columns 31, and the two groups of columns 31 are symmetrically installed. An installation gap for installing a driving mechanism 34 is provided between the two groups of columns 31. The driving mechanism 34 includes a driving motor 341 installed on the fixed seat 30, a lifting rod 342 vertically rotated and installed between the two groups of columns 31, and a gear set 343 connected to the bottom of the lifting rod 342. Preferably, the lifting rod 342 is a screw rod, and the lifting rod 342 is threadedly engaged with the slider 32. The driving motor 341 drives the lifting rod 342 to rotate through the gear set 343, thereby driving the slider 32 to rise and fall.

[0022] Furthermore, the outer sides of the two groups of columns 31 are provided with a slide groove 310, and the two sides of the slider 32 extend in the direction of the slide groove 310 to form a wrapped rib, and the inner side of the rib slides with the slide groove 310. When the slider 32 slides up and down, the deflection force of the slider 32 is offset by the rib and the slide groove 310. At the same time, this can ensure that the slider 32 slides up and down more smoothly.

[0023] In this embodiment, a sensor device 35 for controlling the operation of the conveyor frame 1 is further provided on the column 31 close to the side of the conveyor frame 1. The sensor device 35 is installed at a height corresponding to the conveying platform 10. The sensor device 35 is preferably a photoelectric sensor, specifically including a photoelectric transmitter 351 installed on the side of the column 31 and a photoelectric receiver 352 installed on the side of the conveyor frame 1 away from the loading mechanism 3. The grating emitted by the photoelectric transmitter 351 is perpendicular to the conveyor frame 1. When the chair foot body on the conveyor frame 1 passes through the grating, it blocks the grating to form an electrical signal and control the conveyor frame 1 on the corresponding conveying platform 10 to stop conveying. At this time, the chair foot body on the conveying platform 10 stays directly below the grasping mechanism 33, thereby facilitating grasping by the grasping mechanism 33.

[0024] The operating principle of the loading mechanism 3 is as follows: when loading, the driving mechanism 34 drives the slider 32 to rise to the corresponding height of a certain conveying platform 10, and then the rotating seat 330 rotates toward the conveying frame 1 so that the support arm 331 is perpendicular to the conveying frame 1. At this time, the clamping claw 332 is located directly above one of the supporting legs of the chair foot body. Then the driving mechanism 34 controls the slider 32 to descend a certain distance so that the supporting leg enters the clamping area of ​​the clamping claw 332. Then the clamping claw 332 clamps the supporting leg, and the driving mechanism 34 controls the slider 32 to rise, thereby lifting the chair foot body. Then the rotating seat 330 rotates 162° in the direction of the transfer mechanism 2 so that the chair foot body is directly above the transfer mechanism 2, and then the flipping device 333 rotates 180° so that the chair foot body is facing upward, and finally the driving mechanism 34 drives the slider 32 to descend so that the chair foot body is placed on the transfer mechanism 2, and then the clamp 332 releases the chair foot body to complete the loading; when resetting, the driving mechanism 34 drives the slider 32 to descend again so that the supporting foot is separated from the clamping area of ​​the clamp 332, and then the rotating seat 330 will support and rotate to a direction parallel to the conveyor frame 1.

[0025] The above contents described in this specification are merely examples of the present invention. Those skilled in the art in the technical field to which the present invention belongs may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they shall fall within the scope of protection of the present invention.

Claims

1. A chair leg flipping and loading mechanism for a welding production line, characterized in that: The invention comprises a fixed seat (30) located between a conveying frame (1) and a transfer mechanism (2), a column (31) vertically mounted on the fixed seat (30), a slider (32) slidably mounted on the column (31), a grabbing mechanism (33) mounted on the slider (32), and a driving mechanism (34) mounted on the fixed seat (30), wherein the driving mechanism (34) drives the slider (32) to slide up and down along the column (31) to grab and transfer the chair feet on different layers of conveying platforms (10), and the slider (32) has a mounting seat (33) extending in a horizontal direction. 20), the grasping mechanism (33) is rotatably mounted on the mounting seat (320), the grasping mechanism (33) comprises a rotating seat (330) rotatably mounted on the mounting seat (320), a support arm (331) horizontally connected to the rotating seat (330), and a clamping claw (332) mounted at the end of the support arm (331), the clamping claw (332) grasps one of the supporting legs of the chair foot body to pick it up, and a flipping device (333) for driving the chair foot body to flip is also provided between the clamping claw (332) and the support arm (331).

2. The chair leg flipping and loading mechanism for a welding production line according to claim 1, characterized in that: The rotation angle of the gripping mechanism (33) on the mounting seat (320) is from 0° perpendicular to the side of the conveying frame (1) to 162° biased towards the side of the transfer mechanism (2).

3. The chair leg flipping and loading mechanism for a welding production line according to claim 1 is characterized in that: The flipping device (333) is a rotating cylinder, and the flipping device (333) drives the clamping claw (332) to flip the seat foot body so that the bottom surface faces upwards. The rotation angle of the clamping claw (332) is 180°.

4. The chair leg flipping and loading mechanism for a welding production line according to claim 1, characterized in that: The columns (31) are provided with two groups, the two groups of columns (31) are symmetrically installed, and an installation interval for installing a driving mechanism (34) is provided between the two groups of columns (31). The driving mechanism (34) comprises a driving motor (341) installed on a fixing seat (30), a lifting rod (342) vertically rotatably installed between the two groups of columns (31), and a gear set (343) connected to the bottom of the lifting rod (342). The lifting rod (342) is threadedly matched with the slider (32). The driving motor (341) drives the lifting rod (342) to rotate through the gear set (343), thereby driving the slider (32) to rise and fall.

5. The chair leg flipping and loading mechanism for a welding production line according to claim 4, characterized in that: The outer sides of the two groups of uprights (31) are provided with sliding grooves (310), and the two sides of the slider (32) are provided with retaining edges extending in the direction of the sliding grooves (310), and the inner sides of the retaining edges are slidably matched with the sliding grooves (310), and the deflection force is offset by the retaining edges when the slider (32) slides up and down.

6. The chair leg flipping and loading mechanism for a welding production line according to claim 1, characterized in that: The feeding mechanism (3) further comprises a sensor device (35) for controlling the operation of the conveying frame (1), wherein the sensor device (35) is mounted on the column (31) close to one side of the conveying frame (1), and the sensor device (35) is mounted at a height corresponding to the conveying platform (10).

7. The chair leg flipping and loading mechanism for a welding production line according to claim 6, characterized in that: The sensing device (35) comprises a photoelectric transmitter (351) mounted on the side of the column (31) and a photoelectric receiver (352) mounted on the conveying frame (1) on a side away from the loading mechanism (3). The photoelectric transmitter (351) emits a grating perpendicular to the conveying frame (1). When the foot of the chair on the conveying frame (1) passes through the grating, it blocks the grating to form an electrical signal and controls the conveying frame (1) on the corresponding conveying platform (10) to stop conveying.

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