Feeding positioning device for crankshaft machining

Abstract

The utility model relates to a feeding and positioning device for crankshaft machining. The feeding and positioning device comprises a shaft rod conveying mechanism, a shaft rod transferring and positioning mechanism, a supporting mechanism, a crank conveying mechanism and a crank transferring and positioning mechanism. The shaft rod conveying mechanism comprises a shaft rod conveying rack, and a conveying table with the middle sunken downwards is arranged on the shaft rod conveying rack through a conveying plate. The crank conveying mechanism comprises a crank conveying rack, a conveying belt is arranged on the crank conveying rack, a material pushing frame is further arranged on the crank conveying rack, the material pushing frame is concaved inwards to form a material pushing groove, and the material pushing groove of the material pushing frame is connected with an air nozzle. A plurality of shaft rods are evenly arranged on the transmission chain at equal intervals through the conveying table, adjacent shaft rods cannot influence each other, follow-up shaft rod machining and feeding are facilitated, when the cranks are conveyed to the tail end of the conveying belt, the air nozzles can generate adsorption force, the cranks are made to be tightly attached to the inner wall of the pushing groove, the positions of the cranks are adjusted, and follow-up butt joint with the shaft rods is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft processing, in particular to a loading and positioning device for crankshaft processing. Background Art

[0002] The crankshaft is the most important component in the air-conditioning compressor. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the air-conditioning compressor to work.

[0003] The crankshaft in the air-conditioning compressor is usually composed of a main journal, a crank and a connecting rod journal. During the processing of the crankshaft, the main journal is usually welded to the center of one end of the crank first, and then the connecting rod journal is welded to the eccentric part of the other end of the crank. When welding the main journal and the crank, the main journal and the crank in the material box are usually clamped to the welding platform and connected with the crank by a robot. Finally, the connection between the crank and the main journal is welded by a welding robot. Since several main journals and cranks are piled up in the corresponding material box at the same time, the robot needs to adjust the position repeatedly when clamping before it can clamp the main journal and crank and send them to the welding platform for docking.

[0004] Therefore, a loading and positioning device for crankshaft processing is proposed to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a loading and positioning device for crankshaft processing, which has the advantages of improving processing efficiency, etc., and solves the problem that due to the simultaneous accumulation of several main shaft necks and cranks in the corresponding material box, the robot needs to repeatedly adjust the position when clamping, so that the main shaft necks and cranks can be clamped and sent to the welding platform for docking.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a loading and positioning device for crankshaft processing, comprising a shaft conveying mechanism, a shaft transfer positioning mechanism, a support mechanism, a crank conveying mechanism and a crank transfer positioning mechanism;

[0007] The shaft conveying mechanism comprises a shaft conveying frame, on which a plurality of conveying plates are provided for transmission, and conveying platforms with a downwardly concave middle portion are respectively fixed on both sides of the top of the conveying plate;

[0008] The crank conveying mechanism includes a crank conveying frame, a conveyor belt is provided on the crank conveying frame, a horizontally movable pushing frame is also provided on the crank conveying frame, the pushing frame is recessed inward to form a pushing groove, and the pushing groove of the pushing frame is connected to an air nozzle, and the crank conveying frame is also provided with a supporting block that can move up and down, and a supporting suction cup is embedded in the supporting block.

[0009] Furthermore, the head and tail of the shaft conveyor frame are both provided with a rotating shaft through bearings, and both ends of the two rotating shafts are fixed with a transmission sprocket. The outer sides of the two transmission sprockets corresponding to the outer sides of the two rotating shafts are jointly transmitted with a transmission chain, the conveying plate is fixed on the two groups of transmission chains, and a driving motor is fixed on the shaft conveyor frame, and the output shaft of the driving motor is fixed to one of the rotating shafts.

[0010] Furthermore, the shaft transfer positioning mechanism includes a positioning loading frame, a horizontal linear module is fixed on the positioning loading frame, and two groups of linear cylinders driven by the horizontal linear module to perform horizontal linear motion are fixed at the output end of the horizontal linear module, and the output shafts of the two groups of linear cylinders are respectively fixed with clamping cylinders through a connecting frame.

[0011] Furthermore, the support mechanism includes a support seat, and the support seat is provided with two pairs of support platforms with the middle portions recessed downwards.

[0012] Furthermore, a linear pusher module is fixed on the crank conveyor frame, and an output end of the linear pusher module is fixed on the pusher frame. A lifting cylinder is also fixed on the crank conveyor frame, and an output shaft of the lifting cylinder is fixed on the support block.

[0013] Furthermore, the crank transfer positioning mechanism includes a mounting plate, a loading cylinder is fixed on the mounting plate, a fixed frame is fixed to the output end of the loading cylinder, a rotating shaft is rotatably provided on the fixed frame through a bearing, a rotating frame is fixed on the rotating shaft, an assembly suction cup is embedded in the rotating frame, a rotating gear is fixed to one end of the rotating shaft, a driving cylinder is fixed on the fixed frame, and a rotating rack meshing with the rotating gear is fixed to the output shaft of the driving cylinder.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] In the loading and positioning device for crankshaft processing, several shafts are evenly and equidistantly arranged on the transmission chain through a conveyor table, and adjacent shafts will not affect each other, which is convenient for subsequent shaft processing and loading. When conveyed to the end of the shaft conveying mechanism, the clamping cylinder can clamp and fix the shaft to the support table to wait for the assembly and welding with the crank to be completed. The crank is conveyed by the conveyor belt, and when it is delivered to the end of the conveyor belt, the air nozzle can generate adsorption force to make the crank close to the inner wall of the push groove, adjust the position of the crank, and facilitate the subsequent docking with the shaft. After the crank is pushed above the support block and adsorbed by the support suction cup, the lifting cylinder lifts the crank until it is adsorbed by the assembly suction cup, and then the crank is rotated to face the shaft, so that the crank can be combined to the end of the shaft, and the two are welded by the welding robot on the side. The whole process has a high degree of automation and better processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the shaft rod conveying mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the shaft transfer positioning mechanism and the support mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the crank conveying mechanism of the utility model;

[0020] Figure 5 It is a schematic diagram of the crank transfer positioning mechanism of the utility model.

[0021] In the figure: 1. Axis rod conveying mechanism; 101. Axis rod conveying frame; 102. Rotating shaft; 103. Transmission sprocket; 104. Transmission chain; 105. Conveying plate; 106. Conveying platform; 107. Driving motor; 2. Axis rod transfer positioning mechanism; 201. Positioning feeding frame; 202. Horizontal linear module; 203. Linear cylinder; 204. Clamping cylinder; 3. Support mechanism; 301. Support seat; 302. Support platform; 4. Crank conveying mechanism; 4 01. Crank conveyor frame; 402. Conveyor belt; 403. Pushing linear module; 404. Pushing frame; 405. Air nozzle; 406. Lifting cylinder; 407. Support block; 408. Support suction cup; 5. Crank transfer positioning mechanism; 501. Mounting plate; 502. Loading cylinder; 503. Fixed frame; 504. Rotating shaft; 505. Rotating frame; 506. Assembly suction cup; 507. Rotating gear; 508. Driving cylinder; 509. Rotating rack. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 In this embodiment, a loading and positioning device for crankshaft processing includes a shaft conveying mechanism 1, a shaft transfer and positioning mechanism 2, a support mechanism 3, a crank conveying mechanism 4 and a crank transfer and positioning mechanism 5. The shaft is conveyed by the shaft conveying mechanism 1 and supported by the support mechanism 3 at the clamping point of the shaft transfer and positioning mechanism 2. The crank is conveyed by the crank conveying mechanism 4 and taken by the crank transfer and positioning mechanism 5 to dock with the shaft on the support mechanism 3.

[0024] The shaft rod conveying mechanism 1 can convey a plurality of shaft rods to the supporting mechanism 3 at equal distances, such as Figure 2 As shown, the shaft conveying mechanism 1 includes a shaft conveying frame 101, and the head and tail of the shaft conveying frame 101 are rotatably provided with a rotating shaft 102 through bearings, and both ends of the two rotating shafts 102 are fixed with a driving sprocket 103, and the outer sides of the two driving sprockets 103 corresponding to the outer sides of the two rotating shafts 102 are jointly driven by a driving chain 104, and conveying plates 105 are fixed on the two groups of driving chains 104, and conveying platforms 106 with a downward concave middle part are respectively fixed on both sides of the top of the conveying plate 105, and a driving motor 107 is fixed on the shaft conveying frame 101, and the output shaft of the driving motor 107 is fixed to one of the rotating shafts 102.

[0025] Start the drive motor 107, and the output shaft of the drive motor 107 drives the corresponding rotating shaft 102 to rotate, and the transmission sprocket 103 outside the rotating shaft 102 rotates, and the transmission chain 104 can rotate, so that the conveying plate 105 drives the conveying platform 106 on its top to convey the shaft rod, and several shaft rods are placed on the corresponding conveying platform 106 at equal distances, and adjacent shaft rods will not affect each other during transportation.

[0026] After the shaft rod is transported to the support mechanism 3, the shaft rod transfer and positioning mechanism 2 can clamp the shaft rod and place it at the support mechanism 3, such as Figure 3 As shown, the shaft transfer positioning mechanism 2 includes a positioning loading frame 201, on which a horizontal linear module 202 is fixed, and the output end of the horizontal linear module 202 is fixed with two groups of linear cylinders 203 driven thereby to perform horizontal linear motion, and the output shafts of the two groups of linear cylinders 203 are respectively fixed with clamping cylinders 204 through connecting frames.

[0027] The horizontal linear module 202 can drive the linear cylinder 203 to move above the shaft at the end of the shaft conveying mechanism 1, the linear cylinder 203 is pushed out, the clamping cylinder 204 can grab the shaft, and the horizontal linear module 202 is reset to drive the shaft to move to the support mechanism 3.

[0028] The support mechanism 3 can support the shaft rod for welding of the welding head, such as Figure 3 As shown, the support mechanism 3 includes a support seat 301, on which are provided two pairs of support platforms 302 with the middle part recessed downward. A pair of support platforms 302 close to the shaft conveying mechanism 1 supports the shaft during processing, and the other pair of support platforms 302 temporarily stores the shaft after processing.

[0029] The crank is transported by the crank transport mechanism 4, such as Figure 4As shown, the crank conveying mechanism 4 includes a crank conveying frame 401, and a conveyor belt 402 for transmission is provided on the crank conveying frame 401. The transmission method of the conveyor belt 402 is a conventional belt transmission structure known to the public, which will not be described in detail here. A pushing linear module 403 is also fixed on the crank conveying frame 401, and a pushing frame 404 is fixed on the output end of the pushing linear module 403. The pushing frame 404 is recessed inward to form a pushing groove, and the pushing groove of the pushing frame 404 is connected to an air nozzle 405. When the crank is transported to the tail end through the conveyor belt 402, it enters the pushing groove of the pushing frame 404, and the air nozzle 405 generates an adsorption force, so that the crank is close to the inner wall of the pushing groove. A lifting cylinder 406 is also fixed on the crank conveying frame 401, and a supporting block 407 is fixed to the output shaft of the lifting cylinder 406, and a supporting suction cup 408 is embedded on the support block 407.

[0030] When the crank is transported to the tail end of the conveyor belt 402, the air nozzle 405 adjusts the position of the crank in the pushing groove of the pushing rack 404, and then drives the pushing rack 404 to push the crank to move above the support block 407 through the pushing linear module 403. In the initial state, the support block 407 and the conveyor belt 402 are in the same plane. When the crank moves to the top of the support block 407 and is adsorbed by the supporting suction cup 408, the lifting cylinder 406 is lifted up to lift the crank, which is convenient for the crank transfer positioning mechanism 5 to load materials.

[0031] The crank transfer positioning mechanism 5 can deliver the crank to the shaft and assemble it with the shaft. Figure 5 As shown, the crank transfer positioning mechanism 5 includes a mounting plate 501, a loading cylinder 502 is fixed on the mounting plate 501, a fixing frame 503 is fixed on the output end of the loading cylinder 502, a rotating shaft 504 is rotatably provided on the fixing frame 503 through a bearing, a rotating frame 505 is fixed on the rotating shaft 504, an assembly suction cup 506 is embedded in the rotating frame 505, a rotating gear 507 is fixed at one end of the rotating shaft 504, a driving cylinder 508 is fixed on the fixing frame 503, and a rotating rack 509 meshing with the rotating gear 507 is fixed on the output shaft of the driving cylinder 508.

[0032] The driving cylinder 508 is pushed out, and under the meshing action of the rotating gear 507 and the rotating rack 509, the rotating shaft 504 drives the rotating frame 505 to rotate downward until the assembly suction cup 506 rotates to face the crank, and the lifting cylinder 406 continues to push up, so that the crank can be pushed to fit with the assembly suction cup 506, and the crank is sucked by the assembly suction cup 506, and rotated again to face the shaft rod, and the loading cylinder 502 is pushed out, and the crank can be assembled on the shaft rod, and the welding robot can perform welding from the side.

[0033] By adopting the above-mentioned loading and positioning device for crankshaft processing, the rapid assembly of the shaft and the crank is realized. The specific positioning and loading method is as follows:

[0034] Start the driving motor 107, the output shaft of the driving motor 107 drives the rotating shaft 102 to rotate, the transmission sprocket 103 outside the rotating shaft 102 rotates, and the transmission chain 104 can rotate, so that the conveying plate 105 drives the conveying platform 106 on its top to convey the shaft rod. After the shaft rod is conveyed to the supporting mechanism 3, the horizontal linear module 202 can drive the linear cylinder 203 to move to the top of the shaft rod at the end of the shaft rod conveying mechanism 1, the linear cylinder 203 is pushed out, and the clamping cylinder 204 can grab the shaft rod, and the horizontal linear module 202 is reset, which can drive the shaft rod to move onto the supporting platform 302, and the clamping cylinder 204 can position the shaft rod on the supporting platform 302;

[0035] When the crankshaft is transported by the conveyor belt 402 and the crank is transported to the tail end of the conveyor belt 402, the air nozzle 405 adjusts the position of the crank in the pushing groove of the pushing rack 404, and then drives the pushing rack 404 to push the crank to the top of the support block 407 through the pushing linear module 403. In the initial state, the support block 407 and the conveyor belt 402 are in the same plane. When the crank moves to the top of the support block 407 and is adsorbed by the support suction cup 408, the cylinder 508 is driven to push it out, and the gear is rotated. Under the meshing action of 507 and the rotating rack 509, the rotating shaft 504 drives the rotating frame 505 to rotate downward until the assembly suction cup 506 rotates to face the crank, and the lifting cylinder 406 continues to lift up, so that the crank can be pushed to fit the assembly suction cup 506, and the crank is sucked by the assembly suction cup 506, and rotated again to face the shaft fixed by the clamping cylinder 204, and the loading cylinder 502 is pushed out, so that the crank can be assembled on the shaft, and the welding robot can then perform welding from the side.

[0036] The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A loading and positioning device for crankshaft processing, characterized in that: It comprises an axle conveying mechanism (1), an axle transfer positioning mechanism (2), a supporting mechanism (3), a crank conveying mechanism (4) and a crank transfer positioning mechanism (5); The shaft conveying mechanism (1) comprises a shaft conveying frame (101), on which a plurality of conveying plates (105) are provided for transmission, and conveying platforms (106) with a downwardly concave middle portion are respectively fixed on both sides of the top of the conveying plate (105); The crank conveying mechanism (4) comprises a crank conveying frame (401), a conveying belt (402) is provided on the crank conveying frame (401), a horizontally movable pushing frame (404) is also provided on the crank conveying frame (401), the pushing frame (404) is recessed inward to form a pushing groove, and the pushing groove of the pushing frame (404) is connected to an air nozzle (405), and a supporting block (407) that can move up and down is also provided on the crank conveying frame (401), and a supporting suction cup (408) is embedded on the supporting block (407).

2. A loading and positioning device for crankshaft processing according to claim 1, characterized in that: The head and tail of the shaft conveying frame (101) are both provided with a rotating shaft (102) rotatably via bearings, and transmission sprockets (103) are fixed at both ends of the two rotating shafts (102), and a transmission chain (104) is commonly transmitted on the outer sides of the two transmission sprockets (103) corresponding to the outer sides of the two rotating shafts (102), and the conveying plate (105) is fixed on the two groups of transmission chains (104), and a driving motor (107) is fixed on the shaft conveying frame (101), and the output shaft of the driving motor (107) is fixed to one of the rotating shafts (102).

3. A loading and positioning device for crankshaft processing according to claim 1, characterized in that: The shaft transfer positioning mechanism (2) comprises a positioning loading frame (201), a horizontal linear module (202) is fixed on the positioning loading frame (201), two groups of linear cylinders (203) driven by the horizontal linear module (202) to perform horizontal linear motion are fixed at the output end of the horizontal linear module (202), and the output shafts of the two groups of linear cylinders (203) are respectively fixed with clamping cylinders (204) via connecting frames.

4. A loading and positioning device for crankshaft processing according to claim 1, characterized in that: The support mechanism (3) comprises a support seat (301), and the support seat (301) is provided with two pairs of support platforms (302) with the middle portions recessed downwards.

5. The loading and positioning device for crankshaft processing according to claim 1, characterized in that: A push linear module (403) is also fixed on the crank conveyor frame (401), and the output end of the push linear module (403) is fixed on the push frame (404). A lifting cylinder (406) is also fixed on the crank conveyor frame (401), and the output shaft of the lifting cylinder (406) is fixed on the support block (407).

6. A loading and positioning device for crankshaft processing according to claim 1, characterized in that: The crank transfer positioning mechanism (5) comprises a mounting plate (501), a loading cylinder (502) is fixed on the mounting plate (501), a fixed frame (503) is fixed to the output end of the loading cylinder (502), a rotating shaft (504) is rotatably provided on the fixed frame (503) via a bearing, a rotating frame (505) is fixed on the rotating shaft (504), an assembly suction cup (506) is embedded in the rotating frame (505), a rotating gear (507) is fixed to one end of the rotating shaft (504), a driving cylinder (508) is fixed on the fixed frame (503), and a rotating rack (509) meshing with the rotating gear (507) is fixed to the output shaft of the driving cylinder (508).

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