An automatic assembly device for an automotive connecting rod and its working method

Abstract

The present invention aims to provide an automatic assembly device for an automotive connecting rod. The automotive connecting rod includes an intermediate connecting rod, a first end connecting rod, and a second end connecting rod. The automatic assembly device includes a drive cabinet. Above the drive cabinet, there is a clamping device for clamping the intermediate connecting rod, a first pushing member for installing the second end connecting rod, and a second pushing member for installing the first end connecting rod. The automatic assembly device of the present invention transfers the intermediate connecting rod to the rotating member, transfers the first end connecting rod to the second pushing member, and transfers the second end connecting rod to the first pushing member. By starting the relative movement of two first electric sliders and simultaneously starting the relative movement of the second electric slider, the positioning of the second end connecting rod and the first end connecting rod is achieved, making the first end connecting rod, the intermediate connecting rod, and the second end connecting rod coaxial. By rotating the rotating member, the first end connecting rod and the second end connecting rod are sequentially assembled, realizing the automatic assembly of the connecting rod.

Description

Technical Field

[0001] The present invention relates to an automatic assembly device, specifically an automatic assembly device for automotive connecting rods and its working method. Background Art

[0002] The automotive suspension adjustable connecting rod is simply referred to as the automotive connecting rod, which usually consists of three connecting rod fittings, including an intermediate connecting rod and two end connecting rods. During assembly, adjacent connecting rod fittings are usually connected by threads.

[0003] Currently, the assembly of automotive suspension adjustable connecting rods basically requires manual operation by workers, resulting in high labor intensity, low production efficiency, difficult control of consistency in manual assembly, and low product qualification rate. To solve the above problems, an automatic assembly device for automotive connecting rods and its working method are provided. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic assembly device for automotive connecting rods and its working method. By transferring the intermediate connecting rod to the rotating member, the first end connecting rod to the second pushing member, and the second end connecting rod to the first pushing member, and by starting the relative movement of two first electric sliders and simultaneously starting the relative movement of the second electric slider, the positioning of the second end connecting rod and the first end connecting rod is achieved. After positioning, the first end connecting rod, the intermediate connecting rod, and the second end connecting rod are coaxial. By rotating the rotating member, the first end connecting rod and the second end connecting rod are sequentially assembled, realizing the automatic assembly of the connecting rod, saving labor, and improving production efficiency.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An automatic assembly device for automotive connecting rods, where the automotive connecting rod includes three connecting rod fittings: an intermediate connecting rod, a first end connecting rod, and a second end connecting rod. The first end connecting rod and the second end connecting rod are collectively referred to as end connecting rod fittings. When assembling the automotive connecting rod, the first end connecting rod and the second end connecting rod are respectively installed at both ends of the intermediate connecting rod.

[0007] The automatic assembly device includes a drive cabinet. Above the drive cabinet, there is a clamping device for clamping the intermediate connecting rod, a first pushing member for installing the second end connecting rod, and a second pushing member for installing the first end connecting rod.

[0008] The clamping device includes a rotating member. Symmetrically distributed supporting members are fixed above the drive cabinet, and the supporting members are used to support the rotating member. The clamping device also includes a pressing member for pressing the intermediate connecting rod, and a driving member for driving the rotation of the rotating member is provided in the drive cabinet.

[0009] Further, the automatic assembly device further includes a loading and unloading device. The loading and unloading device includes a placement rack placed on one side of the drive cabinet. Above the placement rack, there are three parallelly distributed conveying devices. There is a gap between the conveying devices and the drive cabinet. The positions of the three conveying devices correspond to the first pusher, the clamping device, and the second pusher respectively. Among them, the middle conveying device is used to convey the middle connecting rod, and the two conveying devices near both sides are respectively used to convey the first end connecting rod and the second end connecting rod. The upper surface of the conveyor belt of the conveying device is fixed with placement grooves distributed in an array.

[0010] On the conveying devices for conveying the first end connecting rod and the second end connecting rod, there are respectively a first alignment member, a second alignment member, a detection member, and a recycling box. The first alignment member is used to align the ends of the connecting rod fittings, the second alignment member is used to align the orientation of the connecting heads, the detection member is used to detect whether the connecting rod fittings meet the placement requirements, and the recycling box is used to recycle the connecting rod fittings that do not meet the placement requirements.

[0011] Further, the middle connecting rod includes a first rod body. The first rod body is a hollow rod. Nuts are rotatably provided at both ends of the first rod body. Both the first end connecting rod and the second end connecting rod include a second rod body. Threads matched with the nuts are provided on the outer wall of the second rod body. A connecting head is fixed at one end of the second rod body. The connecting head on the first end connecting rod is annular, and the connecting head on the second end connecting rod is U-shaped.

[0012] Further, the rotating member includes a vertical first gear. An installation hole is opened in the center of the first gear. A slot is communicated on one side of the installation hole. Symmetrically distributed sliding plates are slidably provided on both sides of the first gear. A first spring is connected between the sliding plate and the first gear. Under the action of the first spring, the two opposite sliding plates open. A clamping groove for clamping the nut is provided on one side of the sliding plate. The cross-section of the sliding plate is semi-circular. Arc-shaped notches are symmetrically distributed on the first gear.

[0013] The supporting member includes a first fixed block fixed above the drive cabinet. Symmetrically distributed first connecting bars are fixed above the first fixed block. The two first connecting bars on the same supporting member are respectively located on both sides of the first gear. A first connecting shaft is connected between the first connecting bars. The first connecting shaft is located in the arc-shaped notch. A first roller is rotatably provided on the first connecting bar. The first roller is tangent to the side of the sliding plate away from the clamping groove.

[0014] The pressing member includes a first motor fixed inside the drive cabinet. The output shaft of the first motor penetrates through the top plate of the drive cabinet and is fixed with a vertical plate. A rotating plate is rotatably arranged on the vertical plate. An oval hole is provided on the rotating plate. Above the vertical plate, a cylinder bracket is fixed. A horizontal first cylinder is fixed on the cylinder bracket. A connecting rod is rotatably arranged on the output shaft of the first cylinder. A first connecting block is rotatably arranged on the connecting rod. A second connecting shaft is fixed below the first connecting block. The second connecting shaft penetrates through the oval hole and is fixed with a limiting block.

[0015] Symmetrically distributed second fixing blocks are fixed at the bottom of the rotating plate. Symmetrically distributed second connecting bars are fixed below the second fixing blocks. The second connecting bars on the same second fixing block are respectively located on both sides of the first gear. Second rollers that are tangent to the sliding plate are rotatably arranged on the second connecting bars.

[0016] A through hole is provided on the top plate of the drive cabinet. The driving member includes a motor bracket fixed inside the drive cabinet. A second motor is fixed on the motor bracket. A second gear is fixed on the output shaft of the second motor. The second gear passes through the through hole and meshes with the first gear.

[0017] Further, the first pushing member includes a third fixing block fixed above the drive cabinet. A second cylinder is fixed on the side of the third fixing block away from the clamping device. The output shaft of the second cylinder penetrates through the third fixing block and is fixed with a first sliding block. A third motor is fixed on the first sliding block. A rectangular clamping block is fixed on the output shaft of the third motor. When the second end connecting rod is installed on the first pushing member, the rectangular clamping block is clamped into the connecting head on the second end connecting rod.

[0018] One side of the first sliding block close to the clamping device is connected with a U-shaped block. Two first electric sliders are slidably arranged inside the U-shaped block. When the second end connecting rod is installed on the first pushing member, the second rod body of the second end connecting rod is located between the two first electric sliders.

[0019] Further, the second pushing member includes a fourth fixing block fixed above the drive cabinet. A third cylinder is fixed on the side of the fourth fixing block away from the clamping device. The output shaft of the third cylinder penetrates through the fourth fixing block and is fixed with a second sliding block. A vertical mounting shaft is provided on the mounting shaft. The mounting shaft is used for sleeving the connecting head on the first end connecting rod. Two second electric sliders are slidably arranged on the second sliding block. The second electric sliders are located on the side of the mounting shaft close to the clamping device. When the first end connecting rod is installed on the second pushing member, the second rod body of the first end connecting rod is located between the two second electric sliders.

[0020] Further, the first regularizing member includes two horizontal first slide rails. The two first slide rails are respectively fixed on both sides of the corresponding conveying device. Third electric sliders are slidably arranged on the first slide rails. A push plate is fixed on the third electric sliders.

[0021] The second aligning member is located on the side of the first aligning member close to the drive cabinet. The second aligning member includes two vertical second sliding rails, which are respectively fixed on both sides of the corresponding conveying device. A fourth electric slider is slidably arranged in the second sliding rail, and a pressing plate is fixed on the fourth electric slider. The pressing plate on one side of the conveying device is used to press the connector, and the pressing plate on the other side is used to press the second rod body.

[0022] Further, the detecting member is located on the side of the second aligning member close to the drive cabinet. The detecting member includes a connecting plate, which is connected to the second sliding rail on the side close to the connector, and an electric telescopic rod is fixed below the connecting plate.

[0023] Further, a transfer device is provided on the pressing member. The transfer device includes symmetrically distributed third sliding rails, which are respectively located on both sides of the rotating plate. A third sliding block is slidably arranged in the third sliding rail, and a third spring is connected between the third sliding block and the third sliding rail. A rotating shaft is fixed on the third sliding block, and a rotating rod is rotatably arranged on the rotating shaft. A cross bar is vertically arranged below the rotating rod, and three hooks are fixed on the side of the cross bar close to the vertical plate.

[0024] Limit rods are fixed on both sides of the vertical plate. The limit rod includes a first vertical rod connected to the vertical plate, an arc rod is connected to the first vertical rod, and a second vertical rod parallel to the first vertical rod is connected to the arc rod. Under the action of the third spring, the third sliding block always contacts the inner wall of the limit rod.

[0025] The working method of the above-mentioned automatic assembly device includes the following steps:

[0026] Step 1: Feeding

[0027] The connecting rod fittings are conveyed through the loading and unloading device. During the conveying process, the connecting rod fittings are aligned by the first aligning member and the second aligning member, and the detecting member is used to detect whether the placement orientation of the connecting rod fittings meets the requirements.

[0028] Step 2: Loading

[0029] The intermediate connecting rod on the loading and unloading device is transferred to the rotating member through the transfer device on the pressing member, the first end connecting rod on the loading and unloading device is transferred to the second pushing member, and the second end connecting rod on the loading and unloading device is transferred to the first pushing member.

[0030] Step 3: Assembly

[0031] The second end connecting rod and the first end connecting rod are sequentially assembled by rotating the rotating member.

[0032] Step 4: Unloading

[0033] After the connecting rod is assembled, it is transferred to the loading and unloading device by the transfer device on the pressing member for unloading.

[0034] Advantages of the present invention:

[0035] 1. By transferring the intermediate connecting rod to the rotating member, the first end connecting rod to the second pushing member, and the second end connecting rod to the first pushing member, and starting the relative movement of two first electric sliders and the relative movement of the second electric slider at the same time, the positioning of the second end connecting rod and the first end connecting rod is realized. After positioning, the first end connecting rod, the intermediate connecting rod, and the second end connecting rod are coaxial. By rotating the rotating member, the second end connecting rod and the first end connecting rod are assembled in sequence, realizing the automatic assembly of the connecting rod, saving labor and improving production efficiency.

[0036] 2. By the transfer device on the pressing member, the intermediate connecting rod on the loading and unloading device is transferred to the rotating member, the first end connecting rod on the loading and unloading device is transferred to the second pushing member, and the second end connecting rod on the loading and unloading device is transferred to the first pushing member. After the connecting rod is assembled, it is transferred to the loading and unloading device by the transfer device on the pressing member for unloading. Therefore, by setting the loading and unloading device, automatic loading and unloading can be realized, and after the unloading of the loading and unloading device, it is already prepared for the next loading, saving the loading time and improving the loading efficiency.

[0037] 3. During the transmission process, the connecting rod fittings are straightened by the first straightening member and the second straightening member, and the detection member detects whether the placement orientation of the connecting rod fittings meets the requirements, realizing automatic straightening and automatic detection, and reducing the operation difficulty during cloth placement. Description of the Drawings

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] Figure 1 is a schematic diagram of a partial structure of the automatic assembly equipment of the present invention;

[0040] Figure 2 is a schematic diagram of the structure of the rotating member of the present invention;

[0041] Figure 3 is a schematic diagram of a partial structure of the automatic assembly equipment of the present invention;

[0042] Figure 4 is Figure 3 the enlarged schematic diagram of part A in

[0043] Figure 5 is a schematic diagram of a partial structure of the automatic assembly equipment of the present invention;

[0044] Figure 6 is a schematic diagram of a partial structure of the automatic assembly equipment of the present invention;

[0045] Figure 7 is Figure 6 The enlarged structural schematic diagram at position B in the figure.

[0046] In the figure: 1, drive cabinet; 2, clamping device; 3, first pusher; 4, second pusher; 5, loading and unloading device; 6, intermediate connecting rod; 7, first end connecting rod; 8, second end connecting rod; 9, first regularizing member; 10, second regularizing member; 20, detecting member; 30, transfer device; 40, recycling box; 50, position sensor; 21, rotating member; 22, supporting member; 23, pressing member; 24, driving member; 211, first gear; 212, mounting hole; 213, slotted opening; 214, sliding plate; 215, first spring; 216, engaging groove; 217, arc-shaped notch; 221, first fixing block; 222, first connecting strip; 223, first connecting shaft; 224, first roller; 231, first motor; 232, vertical plate; 233, rotating plate; 234, cylinder bracket; 235, first cylinder; 236, connecting rod; 237, first connecting block; 238, waist-shaped hole; 239, second connecting shaft; 2310, limiting block; 2311, second fixing block; 2312, second connecting strip; 2313, second roller; 241, motor bracket; 242, second motor; 243, second gear; 31, third fixing block; 32, second cylinder; 33, first sliding block; 34, third motor; 35, rectangular clamping block; 36, U-shaped block; 37, first electric slider; 41, fourth fixing block; 42, third cylinder; 43, second sliding block; 44, mounting shaft; 45, second electric slider; 51, placing rack; 52, conveying device; 53, placing groove; 61, first rod body; 62, nut; 91, first slide rail; 92, third electric slider; 93, pushing plate; 101, second slide rail; 102, fourth electric slider; 103, pressing plate; 201, connecting plate; 202, electric telescopic rod; 301, third slide rail; 302, third sliding block; 307, third spring; 303, rotating shaft; 304, rotating rod; 305, cross bar; 306, hook; 308, first vertical rod; 309, arc-shaped rod; 3010, second vertical rod; 401, receiving plate. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0048] In the description of the present invention, it should be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0049] An automatic assembly device for an automotive connecting rod. The automotive connecting rod includes three connecting rod fittings, namely an intermediate connecting rod 6, a first end connecting rod 7, and a second end connecting rod 8. The first end connecting rod 7 and the second end connecting rod 8 are collectively referred to as end connecting rod fittings. When assembling the automotive connecting rod, the first end connecting rod 7 and the second end connecting rod 8 are respectively installed at both ends of the intermediate connecting rod 6. The automatic assembly device includes a drive cabinet 1, as Figure 1 , Figure 6 shown. Above the drive cabinet 1, there is a clamping device 2 for clamping the intermediate connecting rod 6, a first pusher 3 for installing the second end connecting rod 8, and a second pusher 4 for installing the first end connecting rod 7.

[0050] The intermediate connecting rod 6 includes a first rod body 61. The first rod body 61 is a hollow rod. Nuts 62 are rotatably provided at both ends of the first rod body 61. Both the first end connecting rod 7 and the second end connecting rod 8 include a second rod body. Threads matching the nuts 62 are provided on the outer wall of the second rod body. A connecting head is fixed at one end of the second rod body. The connecting head on the first end connecting rod 7 is annular, and the connecting head on the second end connecting rod 8 is U-shaped.

[0051] The clamping device 2 includes a rotating member 21, as Figures 2 - 5 shown. Symmetrically distributed supporting members 22 are fixed above the drive cabinet 1. The supporting members 22 are used to support the rotating member 21. The clamping device 2 further includes a pressing member 23 for pressing the intermediate connecting rod 6. A driving member 24 for driving the rotating member 21 to rotate is provided in the drive cabinet 1.

[0052] The rotating member 21 includes a vertical first gear 211. An installation hole 212 is opened at the center of the first gear 211. A slot 213 is communicated with one side of the installation hole 212. Symmetrically distributed sliding plates 214 are slidably provided on both sides of the first gear 211. A first spring 215 is connected between the sliding plates 214 and the first gear 211. Under the action of the first spring 215, the opposite two sliding plates 214 open. A clamping groove 216 for engaging with the nut 62 is provided on one side of the sliding plate 214. The cross-section of the sliding plate 214 is semi-circular. When the two sliding plates 214 on one side of the first gear 211 contact, the two sliding plates 214 on this side combine to form a circle, and at the same time, the clamping grooves 216 on the two sliding plates 214 on this side combine to form a regular hexagon. Arc-shaped notches 217 are symmetrically distributed on the first gear 211.

[0053] The supporting member 22 includes a first fixing block 221 fixed above the driving cabinet 1. Symmetrically distributed first connecting bars 222 are fixed above the first fixing block 221. The two first connecting bars 222 on the same supporting member 22 are respectively located on both sides of the first gear 211. A first connecting shaft 223 is connected between the first connecting bars 222. The first connecting shaft 223 is located in the arc-shaped notch 217. A first roller 224 is rotatably provided on the first connecting bar 222. The first roller 224 is tangent to the side of the sliding plate 214 away from the engaging groove 216.

[0054] The pressing member 23 includes a first motor 231 fixed inside the driving cabinet 1. The output shaft of the first motor 231 penetrates through the top plate of the driving cabinet 1 and is fixed with a vertical plate 232. A rotating plate 233 is rotatably provided on the vertical plate 232. A waist-shaped hole 238 is provided on the rotating plate 233. A cylinder support 234 is fixed above the vertical plate 232. A horizontal first cylinder 235 is fixed on the cylinder support 234. A connecting rod 236 is rotatably provided on the output shaft of the first cylinder 235. A first connecting block 237 is rotatably provided on the connecting rod 236. A second connecting shaft 239 is fixed below the first connecting block 237. The second connecting shaft 239 penetrates through the waist-shaped hole 238 and is fixed with a limiting block 2310.

[0055] Symmetrically distributed second fixing blocks 2311 are fixed at the bottom of the rotating plate 233. Symmetrically distributed second connecting bars 2312 are fixed below the second fixing blocks 2311. The second connecting bars 2312 on the same second fixing block 2311 are respectively located on both sides of the first gear 211. Second rollers 2313 tangent to the sliding plate 214 are rotatably provided on the second connecting bars 2312.

[0056] When the rotating plate 233 rotates downward, the second rollers 2313 at the bottom of the rotating plate 233 are used to press the upper half of the sliding plate 214, and the upper-side gear of the supporting member 22 is used to support the lower half of the sliding plate 214, so that the sliding plate 214 moves in the direction close to the axis of the first gear 211, realizing the clamping of the nut 62.

[0057] A through hole is provided on the top plate of the driving cabinet 1. The driving member 24 includes a motor support 241 fixed inside the driving cabinet 1. A second motor 242 is fixed on the motor support 241. A second gear 243 is fixed on the output shaft of the second motor 242. The second gear 243 passes through the through hole and meshes with the first gear 211.

[0058] The first driving member 3 includes a third fixing block 31 fixed above the driving cabinet 1. On the side of the third fixing block 31 away from the clamping device 2, a second air cylinder 32 is fixed. The output shaft of the second air cylinder 32 penetrates through the third fixing block 31 and is fixed with a first sliding block 33. A third motor 34 is fixed on the first sliding block 33. A rectangular clamping block 35 is fixed on the output shaft of the third motor 34. When installing the second end link 8 on the first driving member 3, the rectangular clamping block 35 is clamped into the connector on the second end link 8.

[0059] On the side of the first sliding block 33 close to the clamping device 2, a U-shaped block 36 is connected. Two first electric sliders 37 are slidably arranged in the U-shaped block 36. When installing the second end link 8 on the first driving member 3, the second rod body of the second end link 8 is located between the two first electric sliders 37.

[0060] The second driving member 4 includes a fourth fixing block 41 fixed above the driving cabinet 1. On the side of the fourth fixing block 41 away from the clamping device 2, a third air cylinder 42 is fixed. The output shaft of the third air cylinder 42 penetrates through the fourth fixing block 41 and is fixed with a second sliding block 43. A vertical mounting shaft 44 is provided on the mounting shaft 44 for sleeving the connector on the first end link 7. Two second electric sliders 45 are slidably arranged on the second sliding block 43. The second electric sliders 45 are located on the side of the mounting shaft 44 close to the clamping device 2. When installing the first end link 7 on the second driving member 4, the second rod body of the first end link 7 is located between the two second electric sliders 45.

[0061] The assembly equipment further includes a loading and unloading device 5. The loading and unloading device 5 includes a placement rack 51 placed on one side of the driving cabinet 1. Above the placement rack 51, three parallel distribution conveyor devices 52 are provided. There is a gap between the conveyor device 52 and the driving cabinet 1. The positions of the three conveyor devices 52 correspond to the first driving member 3, the clamping device 2, and the second driving member 4 respectively. Among them, the middle conveyor device 52 is used to convey the middle link 6, and the two conveyor devices 52 close to both sides are respectively used to convey the first end link 7 and the second end link 8. The upper surface of the conveyor belt of the conveyor device 52 is fixed with an array of placement grooves 53.

[0062] On the conveyor devices 52 for conveying the first end link 7 and the second end link 8, there are a first rectifying member 9, a second rectifying member 10, a detecting member 20, and a recycling box 40. The first rectifying member 9 is used to rectify the ends of the link fittings, the second rectifying member 10 is used to rectify the orientation of the connectors, the detecting member 20 is used to detect whether the link fittings meet the placement requirements, and the recycling box 40 is used to recycle the link fittings that do not meet the placement requirements.

[0063] The first rectifying member 9 includes two horizontal first sliding rails 91, which are respectively fixed on both sides of the corresponding conveying device 52. A third electric slider 92 is slidably arranged on the first sliding rail 91, and a pushing plate 93 is fixed on the third electric slider 92. The pushing plates 93 on both sides of the conveying device 52 of the transmission intermediate connecting rod 6 can also be used to rectify the ends of the intermediate connecting rod 6.

[0064] The second rectifying member 10 is located on the side of the first rectifying member 9 close to the drive cabinet 1. As Figure 7 shown, the second rectifying member 10 includes two vertical second sliding rails 101, which are respectively fixed on both sides of the corresponding conveying device 52. A fourth electric slider 102 is slidably arranged in the second sliding rail 101, and a pressing plate 103 is fixed on the fourth electric slider 102. The pressing plate 103 on one side of the conveying device 52 is used to press the connector, and the pressing plate 103 on the other side is used to press the second rod body.

[0065] The detecting member 20 is located on the side of the second rectifying member 10 close to the drive cabinet 1. The detecting member 20 includes a connecting plate 201, and the connecting plate 201 is connected to the second sliding rail 101 on the side close to the connector. An electric telescopic rod 202 is fixed below the connecting plate 201. When the connector is conveyed to below the electric telescopic rod 202, the electric telescopic rod 202 is extended so that its output shaft is inserted into the hollow part of the connector. If the insertion is not successful, it means that the orientation of the connector does not meet the requirements. Extending the electric telescopic rod 202 can press down the connector to press out the corresponding connecting rod fitting into the recycling box 40.

[0066] An inclined receiving plate 401 is fixed in the recycling box 40, and a pressure sensor is arranged on the receiving plate 401. When the connecting rod fitting enters the recycling box 40, it first falls on the receiving plate 401 and then slides into the recycling box 40.

[0067] A transfer device 30 is arranged on the pressing member 23. The transfer device 30 includes symmetrically distributed third sliding rails 301. The two third sliding rails 301 are respectively located on both sides of the rotating plate 233. A third sliding block 302 is slidably arranged in the third sliding rail 301. A third spring 307 is connected between the third sliding block 302 and the third sliding rail 301. A rotating shaft 303 is fixed on the third sliding block 302, and a rotating rod 304 is rotatably arranged on the rotating shaft 303. Under the action of gravity, the rotating rod 304 is always in a vertical state. A cross bar 305 is vertically arranged below the rotating rod 304. Three hooks 306 are fixed on the side of the cross bar 305 close to the vertical plate 232. Among them, one hook 306 close to the rotating plate 233 is used to hook the end of the intermediate connecting rod 6, and the two hooks 306 far from the rotating plate 233 are used to hook the end connecting rod fitting.

[0068] On both sides of the vertical plate 232, limiting rods are fixed. The limiting rod includes a first vertical rod 308 connected to the vertical plate 232. An arc rod 309 is connected to the first vertical rod 308. A second vertical rod 3010 parallel to the first vertical rod 308 is connected to the arc rod 309. Under the action of the third spring 307, the third slider 302 is always in contact with the inner wall of the limiting rod. When the rotating plate 233 rotates above the rotating member 21, under the limiting action of the second vertical rod 3010, the middle connecting rod 6 on the hook 306 falls into the slot 213.

[0069] The automatic assembly equipment further includes two position sensors 50. One of the position sensors 50 is used to detect the position of the second slider 43, and the other position sensor 50 is used to detect the position of the first slider 33. The position sensors 50 are used to detect whether the assembly dimensions are in place.

[0070] The working method of the above automatic assembly device includes the following steps:

[0071] Step 1: Feeding

[0072] The connecting rod fittings are conveyed by the loading and unloading device 5. During the conveying process, the connecting rod fittings are aligned by the first aligning member 9 and the second aligning member 10. The detecting member 20 is used to detect whether the placement orientation of the connecting rod fittings meets the requirements.

[0073] The specific feeding method is as follows: The connecting rod fittings are placed one by one in the placement slots 53 on the corresponding conveying device 52. One placement slot 53 closest to the driving cabinet 1 on the conveying device 52 is left empty. When the conveying device 52 conveys the connecting rod fittings between the two push plates 93, the two push plates 93 cooperate to push the connecting rod fittings to move, so that the ends of the connecting rod fittings on the same conveying device 52 are aligned after passing through the push plates 93.

[0074] When the conveying device 52 conveys the connecting rod fittings below the pressing plate 103, the pressing plate 103 is moved downward so that one of the pressing plates 103 presses the connecting head of the end connecting rod fitting, and the other pressing plate 103 presses the end of the connecting rod fitting away from the connecting head. When the pressing plate 103 presses the connecting head, the connecting head rotates under the force, and the inclined connecting head can be corrected. The corrected connecting head may have the hollow part facing upward or the hollow part facing one side.

[0075] When the conveying device 52 conveys the connecting rod fitting below the electric telescopic rod 202, the output end of the electric telescopic rod 202 is inserted into the hollow part of the connecting head by extending the electric telescopic rod 202. When the insertion is successful, it indicates that the placement orientation of the connecting rod fitting meets the requirements. When the insertion fails, it indicates that the hollow part of the connecting head faces one side. At this time, the electric telescopic rod 202 pushes down the connecting head with the hollow part facing one side, so that the corresponding connecting rod fitting falls into the recycling box 40. When it falls, after the pressure sensor on the receiving plate 401 senses the pressure change, the placement slot 53 corresponding to the dropping position records a vacant position.

[0076] Step 2: Loading

[0077] The intermediate connecting rod 6 on the loading and unloading device 5 is transferred to the rotating part 21 through the transfer device 30 on the pressing part 23, the first end connecting rod 7 on the loading and unloading device 5 is transferred to the second pushing part 4, and the second end connecting rod 8 on the loading and unloading device 5 is transferred to the first pushing part 3.

[0078] The specific loading method is as follows: The first cylinder 235 is contracted to control the rotating plate 233 to rotate upward, so as to avoid interference between the subsequent rotation of the vertical plate 232 and the transfer device 30 and the rotating part 21. The first motor 231 is started to control the vertical plate 232 to rotate until the rotating plate 233 is located above the loading and unloading device 5. The first cylinder 235 is extended to control the rotating plate 233 to rotate downward until the hook 306 is located below the placement slot 53 on the side close to the drive cabinet 1. At the same time, the three conveying devices 52 are started to convey the row of connecting rod fittings closest to the drive cabinet 1 above the hook 306. If the vacant position recorded in Step 1 is conveyed to the closest to the drive cabinet 1, the corresponding conveying device 52 of the vacant position is started to continue to convey forward until the placement slot 53 on the side closest to the drive cabinet 1 is no longer a vacant position.

[0079] The first cylinder 235 is started to control the rotating plate 233 to rotate upward, driving the hook 306 to rise. During the rising process, the connecting rod fitting on the side closest to the drive cabinet 1 is hooked and driven to rise. Then the first motor 231 is started to control the vertical plate 232 to rotate above the rotating part 21. The first cylinder 235 is extended to control the intermediate connecting rod 6 to be placed into the mounting hole 212 through the slot 213. When the rotating plate 233 rotates to the horizontal position, the first roller 224 and the second roller 2313 can press the sliding plate 214 from two directions of obliquely downward and obliquely upward respectively, so that the two sliding plates 214 move towards each other to clamp the nut 62 at the end of the intermediate connecting rod 6 close to the second end connecting rod 8.

[0080] At the same time, the connecting head on the first end connecting rod 7 is sleeved on the mounting shaft 44, the second rod body on the first end connecting rod 7 is located between the two second electric sliders 45, the connecting head on the second end connecting rod 8 is sleeved on the rectangular block 35, and the second rod body on the second end connecting rod 8 is located between the two first electric sliders 37. The third motor 34 is started to control the rectangular block 35 to rotate 90°, thereby driving the first end connecting rod 7 to rotate 90° to avoid displacement of the first end connecting rod 7 during subsequent assembly. The second end connecting rod 8 and the first end connecting rod 7 are positioned by starting the two first electric sliders 37 to move relative to each other and starting the second electric slider 45 to move relative to each other. After positioning, the first end connecting rod 7, the middle connecting rod 6 and the second end connecting rod 8 are coaxial.

[0081] Step 3: Assembly

[0082] The second end link 8 and the first end link 7 are assembled in sequence by rotating the rotating member 21 .

[0083] The specific assembly method is as follows: extend the second cylinder 32 to insert the second end connecting rod 8 into the corresponding nut 62, and at the same time start the second motor 242 to control the first gear 211 to rotate, thereby driving the nut 62 to rotate, assemble the second end connecting rod 8 on the middle connecting rod 6, start the two first electric sliders 37 to move in the opposite direction, loosen the assembled second end connecting rod 8, contract the second cylinder 32 to disengage the rectangular block 35 from the second end connecting rod 8, and then contract the first cylinder 235 to control the rotating plate 233 to rotate upward, loosen the sliding plate 214, so that the middle connecting rod 6 is released, and extend the third cylinder 32. The cylinder 42 pushes the nut 62 of the intermediate connecting rod 6 to between the two sliding plates 214 close to the first end connecting rod 7 through the first end connecting rod 7 clamped by the second pushing member 4, and then extends the first cylinder 235 to press the sliding plate 214 to fix the corresponding nut 62, and starts the third cylinder 42 to push the first end connecting rod 7 toward the side close to the intermediate connecting rod 6, and at the same time starts the second motor 242 to control the rotation of the first gear 211. The rotation direction this time is opposite to the rotation direction when assembling the second end connecting rod 8, thereby realizing the connection between the first end connecting rod 7 and the intermediate connecting rod 6 and realizing the assembly of the connecting rods.

[0084] Step 4: Cutting

[0085] The assembled connecting rod is transferred to the loading and unloading device 5 for unloading through the transfer device 30 on the pressing member 23 .

[0086] The specific blanking method is as follows: By starting the first cylinder 235, the rotating plate 233 is controlled to rotate upward. During the upward rotation, the sliding plate 214 is first released, and then the hook 306 hooks the connecting rod assembled in step three. After the square connecting rod moves out of the slot 213, the first motor 231 controls the vertical plate 232 to rotate above the loading and unloading device 5. Then, by starting the first cylinder 235, the rotating plate 233 is controlled to rotate downward, and the assembled connecting rod is placed in the placement groove 53 on the side close to the drive cabinet 1. When the conveying device 52 pushes forward, the assembled connecting rod can be output, and at the same time, the next row of connecting rod accessories can be conveyed above the hook 306, facilitating subsequent feeding.

[0087] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0088] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed.

Claims

1. An automatic assembly device for an automotive connecting rod. The automotive connecting rod includes three types of connecting rod fittings: an intermediate connecting rod (6), a first end connecting rod (7), and a second end connecting rod (8). The first end connecting rod (7) and the second end connecting rod (8) are collectively referred to as end connecting rod fittings. When assembling the automotive connecting rod, the first end connecting rod (7) and the second end connecting rod (8) are respectively installed at both ends of the intermediate connecting rod (6); The automatic assembly equipment includes a drive cabinet (1), characterized in that, Above the driving cabinet (1), there is a clamping device (2) for clamping the intermediate connecting rod (6), a first pushing member (3) for installing the second end connecting rod (8), and a second pushing member (4) for installing the first end connecting rod (7); The clamping device (2) includes a rotating member (21). Above the driving cabinet (1), symmetrically distributed supporting members (22) are fixed. The supporting members (22) are used to support the rotating member (21). The clamping device (2) also includes a pressing member (23) for pressing the intermediate connecting rod (6). Inside the driving cabinet (1), there is a driving member (24) for driving the rotating member (21) to rotate; The rotating member (21) includes a vertical first gear (211). An installation hole (212) is opened at the center of the first gear (211). A slot (213) is communicated and provided on one side of the installation hole (212). On both sides of the first gear (211), symmetrically distributed sliding plates (214) are slidably provided. A first spring (215) is connected between the sliding plate (214) and the first gear (211). Under the action of the first spring (215), the two opposite sliding plates (214) open. On one side of the sliding plate (214), there is a clamping groove (216) for clamping a nut (62). The cross-section of the sliding plate (214) is semi-circular. On the first gear (211), symmetrically distributed arc-shaped notches (217) are provided; The pressing member (23) includes a first motor (231) fixed inside the driving cabinet (1). The output shaft of the first motor (231) penetrates through the top plate of the driving cabinet (1) and is fixed with a vertical plate (232). A rotating plate (233) is rotatably provided on the vertical plate (232). An oval hole (238) is provided on the rotating plate (233). Above the vertical plate (232), a cylinder bracket (234) is fixed. A horizontal first cylinder (235) is fixed on the cylinder bracket (234). A connecting rod (236) is rotatably provided on the output shaft of the first cylinder (235). A first connecting block (237) is rotatably provided on the connecting rod (236). A second connecting shaft (239) is fixed below the first connecting block (237). The second connecting shaft (239) penetrates through the oval hole (238) and is fixed with a limiting block (2310); At the bottom of the rotating plate (233), symmetrically distributed second fixing blocks (2311) are fixed. Below the second fixing blocks (2311), symmetrically distributed second connecting strips (2312) are fixed. The second connecting strips (2312) on the same second fixing block (2311) are respectively located on both sides of the first gear (211). The second connecting strips (2312) are rotatably provided with second rollers (2313) tangent to the sliding plates (214); A transfer device (30) is provided on the pressing member (23). The transfer device (30) includes symmetrically distributed third slide rails (301). The two third slide rails (301) are respectively located on both sides of the rotating plate (233). A third sliding block (302) is slidably provided in the third slide rail (301). A third spring (307) is connected between the third sliding block (302) and the third slide rail (301). A rotating shaft (303) is fixed on the third sliding block (302). A rotating rod (304) is rotatably provided on the rotating shaft (303). A cross bar (305) is vertically provided below the rotating rod (304). Three hooks (306) are fixed on one side of the cross bar (305) close to the vertical plate (232). Limit rods are fixed on both sides of the vertical plate (232). The limit rod includes a first vertical rod (308) connected to the vertical plate (232). An arc rod (309) is connected to the first vertical rod (308). A second vertical rod (3010) parallel to the first vertical rod (308) is connected to the arc rod (309). Under the action of the third spring (307), the third sliding block (302) is always in contact with the inner wall of the limit rod.

2. The automatic assembly device for an automotive connecting rod according to claim 1, characterized in that, The automatic assembly equipment further includes a loading and unloading device (5). The loading and unloading device (5) includes a placement rack (51) placed on one side of the drive cabinet (1). Three parallel distribution conveyor devices (52) are provided above the placement rack (51). A gap is left between the conveyor device (52) and the drive cabinet (1). The positions of the three conveyor devices (52) correspond to the first pusher (3), the clamping device (2), and the second pusher (4) respectively. The conveyor device (52) in the middle is used to convey the middle connecting rod (6). The two conveyor devices (52) close to both sides are respectively used to convey the first end connecting rod (7) and the second end connecting rod (8). The upper surface of the conveyor belt of the conveyor device (52) is fixed with arrayed placement grooves (53). The conveyor devices (52) for conveying the first end connecting rod (7) and the second end connecting rod (8) are both provided with a first rectifying member (9), a second rectifying member (10), a detecting member (20), and a recycling box (40). The first rectifying member (9) is used to rectify the end of the connecting rod fitting. The second rectifying member (10) is used to rectify the orientation of the connector. The detecting member (20) is used to detect whether the connecting rod fitting meets the placement requirements. The recycling box (40) is used to recycle the connecting rod fittings that do not meet the placement requirements.

3. The automatic assembly device for an automotive connecting rod according to claim 2, wherein, The middle connecting rod (6) includes a first rod body (61). The first rod body (61) is a hollow rod. Nuts (62) are rotatably provided at both ends of the first rod body (61). Both the first end connecting rod (7) and the second end connecting rod (8) include a second rod body. Threads matching the nuts (62) are provided on the outer wall of the second rod body. A connector is fixed at one end of the second rod body. The connector on the first end connecting rod (7) is annular. The connector on the second end connecting rod (8) is U-shaped.

4. The automatic assembly equipment for an automotive connecting rod according to claim 2, characterized in that, The supporting member (22) includes a first fixing block (221) fixed above the driving cabinet (1). Symmetrically distributed first connecting bars (222) are fixed above the first fixing block (221). The two first connecting bars (222) on the same supporting member (22) are respectively located on both sides of the first gear (211). A first connecting shaft (223) is connected between the first connecting bars (222). The first connecting shaft (223) is located in the arc-shaped notch (217). A first roller (224) is rotatably provided on the first connecting bar (222). The first roller (224) is tangent to the side of the sliding plate (214) away from the engaging groove (216). A through hole is provided on the top plate of the driving cabinet (1). The driving member (24) includes a motor bracket (241) fixed inside the driving cabinet (1). A second motor (242) is fixed on the motor bracket (241). A second gear (243) is fixed on the output shaft of the second motor (242). The second gear (243) passes through the through hole and meshes with the first gear (211).

5. The automatic assembly equipment for an automotive connecting rod according to claim 3, characterized in that, The first pushing member (3) includes a third fixing block (31) fixed above the driving cabinet (1). A second cylinder (32) is fixed on the side of the third fixing block (31) away from the clamping device (2). The output shaft of the second cylinder (32) penetrates through the third fixing block (31) and is fixed with a first sliding block (33). A third motor (34) is fixed on the first sliding block (33). A rectangular clamping block (35) is fixed on the output shaft of the third motor (34). When the second end link (8) is installed on the first pushing member (3), the rectangular clamping block (35) is clamped into the connecting head on the second end link (8). A U-shaped block (36) is connected to the side of the first sliding block (33) close to the clamping device (2). Two first electric sliders (37) are slidably provided in the U-shaped block (36). When the second end link (8) is installed on the first pushing member (3), the second rod body of the second end link (8) is located between the two first electric sliders (37).

6. The automatic assembly device for an automotive connecting rod according to claim 3, characterized in that, The second pushing member (4) includes a fourth fixing block (41) fixed above the driving cabinet (1). A third cylinder (42) is fixed on the side of the fourth fixing block (41) away from the clamping device (2). The output shaft of the third cylinder (42) penetrates through the fourth fixing block (41) and is fixed with a second sliding block (43). A vertical mounting shaft (44) is provided on the mounting shaft (44) for sleeving the connecting head on the first end link (7). Two second electric sliders (45) are slidably provided on the second sliding block (43). The second electric sliders (45) are located on the side of the mounting shaft (44) close to the clamping device (2). When the first end link (7) is installed on the second pushing member (4), the second rod body of the first end link (7) is located between the two second electric sliders (45).

7. The automatic assembly equipment for an automotive connecting rod according to claim 3, characterized in that, The first aligning member (9) includes two horizontal first slide rails (91), the two first slide rails (91) are respectively fixed on both sides of the corresponding conveying device (52), a third electric slider (92) is slidably arranged on the first slide rail (91), and a push plate (93) is fixed on the third electric slider (92); The second aligning member (10) is located on the side of the first aligning member (9) close to the drive cabinet (1). The second aligning member (10) includes two vertical second slide rails (101), the two second slide rails (101) are respectively fixed on both sides of the corresponding conveying device (52), a fourth electric slider (102) is slidably arranged in the second slide rail (101), and a pressing plate (103) is fixed on the fourth electric slider (102). The pressing plate (103) on one side of the conveying device (52) is used to press the connector, and the pressing plate (103) on the other side is used to press the second rod body.

8. An automatic assembly device for an automotive connecting rod according to claim 7, characterized in that, The detecting member (20) is located on the side of the second aligning member (10) close to the drive cabinet (1). The detecting member (20) includes a connecting plate (201), the connecting plate (201) is connected to the second slide rail (101) on the side close to the connector, and an electric telescopic rod (202) is fixed below the connecting plate (201).

9. The working method of the automatic assembly equipment according to any one of claims 2-8, characterized in that, The working method includes the following steps: Step 1: Cloth The connecting rod fittings are conveyed by the loading and unloading device (5). During the conveying process, the connecting rod fittings are aligned by the first aligning member (9) and the second aligning member (10), and the detecting member (20) is used to detect whether the placement orientation of the connecting rod fittings meets the requirements; Step 2: Loading The intermediate connecting rod (6) on the loading and unloading device (5) is transferred to the rotating member (21) through the transfer device (30) on the pressing member (23), the first end connecting rod (7) on the loading and unloading device (5) is transferred to the second pushing member (4), and the second end connecting rod (8) on the loading and unloading device (5) is transferred to the first pushing member (3); Step 3: Assembly The second end connecting rod (8) and the first end connecting rod (7) are sequentially assembled by rotating the rotating member (21); Step 4: Unloading The assembled connecting rod is transferred to the loading and unloading device (5) through the transfer device (30) on the pressing member (23) for unloading.

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