Connecting rod processing equipment

Abstract

The present invention discloses a connecting rod processing equipment, the technical solution of which includes a laser cutting machine and a pull-down expansion machine. The laser cutting machine includes a sliding drive assembly that pushes the table to move back and forth in the horizontal direction below the laser head; a vertical screw assembly is fixed to one side wall of the table, and the screw assembly is driven and connected to a lifting rod, and a swing arm and a servo motor that drives the swing arm to rotate are installed on the lifting rod. A pneumatic clamp for grabbing the connecting rod at the large cylinder is installed at the end of the swing arm away from the servo motor, and the rotation angle of the swing arm is greater than or equal to 180 degrees; the pull-down expansion machine is located below the table, and an expansion sleeve is provided on the upper surface of the pull-down expansion machine, so that the connecting rod only needs to be manually placed once during the grooving and cracking processes, thereby improving the processing efficiency of the connecting rod.

Description

Technical Field

[0001] The present invention relates to automobile parts processing equipment, and more particularly, to connecting rod processing equipment. Background Art

[0002] The connecting rod is one of the main transmission mechanisms of a car engine. It connects the piston and the crankshaft, transmits the expanding gas pressure acting on the top of the piston to the crankshaft, and reversibly converts the reciprocating linear motion of the piston into the rotational motion of the crankshaft to output power.

[0003] In order to improve the firmness of the automobile connecting rod after installation, the connecting rod adopts an expansion and breaking process, such as the application number CN2004100107221, and the patent name is a laser processing equipment for prefabricating cracking grooves before connecting rod fracture and splitting. The laser is used to open a cracking groove on the inner wall of the connecting rod; then the connecting rod is cracked by a device such as the application number CN2020228054681 and the patent name is "A pull-down connecting rod cracking and expansion device".

[0004] In the prior art connecting rod breaking equipment, such as Figure 1 As shown, the laser cutting machine 2 and the pull-down expansion machine 1 are placed separately on the left and right. After the worker places the connecting rod on the laser cutter to open the cracking groove, he needs to take out the connecting rod and place it on the expansion device again. The cracking process of the connecting rod requires two manual positioning and placement, which reduces the cracking efficiency of the connecting rod. Summary of the Invention

[0005] The object of the present invention is to provide a connecting rod processing device, so that the connecting rod only needs to be placed manually once during the grooving and cracking processes, thereby improving the processing efficiency of the connecting rod.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A connecting rod processing equipment includes a laser cutting machine and a pull-down expansion machine. The laser cutting machine includes a swinging laser head and a slide rail. A table slides on the slide rail. A large cylinder and a small cylinder are provided on the table to position the two ends of the connecting rod. An upper cylinder for controlling the synchronous lifting and lowering of the large cylinder and the small cylinder is provided under the table; the laser cutting machine includes a sliding drive assembly that pushes the table to move back and forth in a horizontal direction under the laser head; a vertical screw assembly is fixed to one side wall of the table, and the screw assembly is driven and connected to a lifting rod. A swing arm and a servo motor for driving the swing arm to rotate are installed on the lifting rod. A pneumatic clamp for grabbing the connecting rod at the large cylinder is installed at the end of the swing arm away from the servo motor. The rotation angle of the swing arm is greater than or equal to 180 degrees; the pull-down expansion machine is located under the table, and an expansion sleeve is provided on the upper surface of the pull-down expansion machine; when the pneumatic clamp grabs the connecting rod, it rotates to the outside of the table with the swing arm and remains horizontal, and the screw assembly drives the connecting rod to move downward and inserts the connecting rod into the expansion sleeve.

[0008] Preferably, the drive assembly comprises a transverse cylinder mounted on the laser cutting machine.

[0009] Preferably, baffle plates are provided at both ends of the slide rail to realize left and right stops for limiting the left and right sides of the platen; when the platen hits the left stopper, the platen is located directly below the laser head; when the platen hits the right stopper, the platen is away from the laser head, and the pneumatic clamping jaws that rotate the platen out are facing the expanding sleeve below.

[0010] Preferably, the lower ends of the large cylinder and the small cylinder pass through the table, and a connecting plate is fixed to the lower ends of the large cylinder and the small cylinder, the cylinder body of the upper cylinder is fixed to the lower surface of the table, and the piston rod of the upper cylinder is fixed to the connecting plate.

[0011] Preferably, the swing arm is rotatably connected to the lifting rod, and the swing arm is fixed with a rotating shaft, which is transmission-connected to the servo motor.

[0012] Preferably, the rotation angle of the swing arm is 180 degrees.

[0013] Preferably, a frame plate for lifting the connecting rod is fixed to the upper surface of the table, and there are two frame plates.

[0014] Preferably, the frame plate is semicircular.

[0015] Preferably, the two racks are one large and one small, the large rack is arranged around the large cylinder, and the small rack is arranged around the small cylinder; the large rack is set away from the small cylinder, and the small rack is set away from the large cylinder.

[0016] Preferably, a telescopic cylinder is fixed to the swing arm, and the piston rod of the telescopic cylinder is fixedly connected to the pneumatic clamp.

[0017] In summary, the present invention has the following beneficial effects:

[0018] (1) In this design, the laser cutting machine and the pull-down expansion machine are arranged in vertical positions. A swing arm that can be raised and lowered is used to grab the connecting rod on the laser cutting position and move it to the expansion position. In this way, workers only need to place the connecting rod on the laser cutting position by hand, and the connecting rod on the expansion position does not need to be placed by workers. This can reduce the number of workers visiting the process, thereby improving the cracking efficiency of the connecting rod.

[0019] Secondly, by reducing the number of times workers come into contact with cracking equipment, the safety performance of workers can be improved. Because the light of the laser cutting machine and the pressure equipment of the expansion machine both have great destructive power, workers do not need to place the connecting rod of the laser cutting station to the expansion station, which achieves the purpose of reducing the number of times workers come into contact with equipment, thereby achieving the purpose of improving safe production.

[0020] Thirdly, the traditional laser cutting machine and the pull-down expansion machine are placed horizontally and separately, occupying a large area; while this design adopts the upper and lower stacking setting of the beam machine, which can reduce the floor space, reduce site costs, reduce site expenses, and save corporate costs.

[0021] (2) The purpose of the upper cylinder is to drive the large cylinder and the small cylinder to rise and fall; the raised large cylinder and the small cylinder are themselves set to the two ends of the connecting rod, but when the connecting rod rotates to switch positions, the large cylinder and the small cylinder will become obstacles to the rotation trajectory. Therefore, the upper cylinder drives the large cylinder and the small cylinder to below the upper surface of the table, which can make the connecting rod clamped and rotated more smoothly.

[0022] (3) The effect of the screw assembly is more obvious, and the clamped connecting rod needs to be transported from the upper station to the lower expansion station.

[0023] (4) The purpose of the frame is to create a gap between the connecting rod and the table of the laser cutting station, which is conducive to the opening of the pneumatic clamp to clamp the connecting rod.

[0024] (5) The purpose of the telescopic cylinder is to extend and retract horizontally, which is more conducive to the horizontal clamping of the pneumatic gripper. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the working positions of a laser cutting machine and a pull-down expansion machine when a connecting rod is cracked in the prior art;

[0026] Figure 2 This is a schematic diagram of the structure in Example 1 Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the structure in Example 1 Figure 2 ;

[0028] Figure 4 This is a top view of a workstation of the connecting rod processing equipment in Example 1 where the connecting rod is waiting to be placed;

[0029] Figure 5 This is a top view of the connecting rod processing equipment in Example 1 performing laser grooving on the connecting rod;

[0030] Figure 6 This is a top view of the working position of the pneumatic gripper grasping the connecting rod after the groove is cut in Example 1;

[0031] Figure 7 is a schematic diagram of the pneumatic gripper grasping the connecting rod and rotating it 180 degrees in Example 1;

[0032] Figure 8 Schematic diagram of the pneumatic clamping jaws in Example 1 being driven by the screw assembly to move to the expansion and breaking movable sleeve;

[0033] Figure 9 is a schematic top view of the processing equipment when the telescopic cylinder in Example 2 is retracted;

[0034] Figure 10 It is a top view schematic diagram of the processing equipment when the telescopic cylinder in Example 2 is extended.

[0035] In the picture:

[0036] 1. Pull-down expansion machine; 11. Expansion-breaking movable sleeve;

[0037] 2. Laser cutting machine; 21. Laser head;

[0038] 31. Table; 32. Slide rail; 33. Horizontal cylinder;

[0039] 41. Left stopper; 42. Right stopper; 43. Protrusion;

[0040] 51. Large cylinder; 52. Small cylinder; 53. Connecting plate; 54. Upper cylinder;

[0041] 6. Screw assembly; 61. Threaded rod; 62. Guide rod; 63. Main motor; 64. Vertical rod;

[0042] 71. Lifting rod; 72. Servo motor; 73. Rotating shaft; 74. Swing arm;

[0043] 8. Pneumatic gripper;

[0044] 9. Shelf board;

[0045] 101. Telescopic cylinder;

[0046] 111. Connecting rod. Implementation Method

[0047] The present invention will be further described in detail below with reference to the accompanying drawings.

[0048] Example 1, a connecting rod processing equipment, referring to Figure 2-Figure 4 The system comprises a laser cutting machine 2 and a pull-down breaker 1. The laser cutting machine 2 includes a swinging laser head 21 and a slide rail 32. The laser head 21 is driven by a rotary motor to rotate on a vertical plane, with a maximum rotation angle of 180 degrees. A platform 31 slides on the slide rail 32. The pull-down breaker 1 is located below the platform 31, and a breaking sleeve 11 is provided on its upper surface.

[0049] The laser slotted connecting rod is placed on the pull-down expansion machine 1, the laser slotted hole of the connecting rod is sleeved on the expansion sleeve 11, and the other small hole of the connecting rod is sleeved on the positioning column of the pull-down expansion machine 1. The pull-down expansion machine 1 is pulled to cause the connecting rod to crack at the slotted hole.

[0050] A large cylinder 51 and a small cylinder 52 at both ends of a positioning connecting rod are provided on the table 31. An upper cylinder 54 for controlling the synchronous lifting and lowering of the large cylinder 51 and the small cylinder 52 is provided below the table 31. The lower end of the large cylinder 51 and the lower end of the small cylinder 52 pass through the table 31, and a connecting plate 53 is fixed to the lower end of the large cylinder 51 and the lower end of the small cylinder 52. The cylinder body of the upper cylinder 54 is fixed to the lower surface of the table 31, and the piston rod of the upper cylinder 54 is fixed to the connecting plate 53.

[0051] The large cylinder 51 is set to position the large end of the connecting rod, which is also the position waiting for laser cutting; the small cylinder 52 is set to position the small end of the connecting rod; through the positioning of the large cylinder 51 and the small cylinder 52, the connecting rod can be stably installed on the table 31.

[0052] The upper cylinder 54 pulls the connecting plate 53 up and down in order to drive the large cylinder 51 and the small cylinder 52 to rise and sink into the table 31 synchronously. This design is to enable the large cylinder 51 and the small cylinder 52 to protrude from the table 31 to better position the connecting rod, and the large cylinder 51 and the small cylinder 52 to sink under the table 31 to facilitate the clamping and rotation of the vertical rod.

[0053] A frame plate 9 for lifting the connecting rod is fixed to the upper surface of the table 31, and there are two frame plates 9; the frame plates 9 are semicircular; the two frame plates 9 are large and small, the large frame plate 9 is arranged around the large cylinder 51, and the small frame plate 9 is arranged around the small cylinder 52; the large frame plate 9 is set away from the small cylinder 52, and the small frame plate 9 is set away from the large cylinder 51.

[0054] The function of the frame plate 9 is to maintain a gap between the connecting rod and the platform 31. This gap makes it easier for the pneumatic clamping jaws 8 to clamp and grasp the middle position of the connecting rod.

[0055] In order to save space, the pull-down expansion machine 1 is located directly below the laser cutting position of the table 31. In order to ensure that the connecting rod can be smoothly moved to the pull-down expansion machine 1 after cutting, this design adopts a movable table 31 design. The specific structure is as follows:

[0056] The laser cutting machine 2 includes a sliding drive assembly that propels the platen 31 horizontally back and forth beneath the laser head 21. The drive assembly includes a transverse cylinder 33 mounted on the laser cutting machine 2. A left stopper 41 and a right stopper 42 are provided at each end of the slide rail 32, separating the platen 31 and limiting the position of the platen 31 on its left and right sides. A protrusion 43 is fixed to the platen 31 and is located between the left and right stops 41 and 42.

[0057] When the protrusion 43 of the platen 31 contacts the left stopper 41 , the platen 31 is located directly below the laser head 21 ;

[0058] When the protrusion 43 of the platen 31 abuts against the right stopper 42 , the platen 31 moves away from the laser head 21 , and the pneumatic clamping jaw 8 of the platen 31 is rotated to face the expanding sleeve 11 below.

[0059] The design of the movable platen 31 has the following advantages: first, it satisfies the switching of the connecting rod position between the laser cutting station and the expansion and breaking station; second, after the platen 31 and the expansion and breaking station below are staggered, the connecting rod can be placed on the idle platen 31. At this time, the platen 31 is far away from the laser head 21, making it safer for workers to place the connecting rod. The vertical projection area of ​​the platen 31 is smaller than the vertical projection area of ​​the pull-down expansion machine 1.

[0060] The following structures are required to grasp the connecting rod after the slotting, including:

[0061] A vertical screw assembly 6 is fixed to one side wall of the table 31 . The screw assembly 6 includes a vertical rod 64 . The vertical rod 64 is vertically fixed on the table 31 and passes through the table 31 .

[0062] The two ends of the vertical rod 64 are used for the installation of the threaded rod 61 and the guide rod 62. The lower end of the vertical rod 64 is fixed with the main motor 63 that drives the screw to rotate. The screw assembly 6 is driven and connected to the lifting rod. The lifting rod is threadedly connected to the threaded rod 61. The lifting rod is sleeved with the guide rod 62, so the lifting rod can move up and down. The main motor 63 is a servo motor, and the specific position of the up and down movement can be controlled by the program.

[0063] A swing arm 74 is mounted on the lifting rod, and the swing arm 74 is rotatably connected to the lifting rod, and a rotating shaft 73 is fixed to the swing arm 74;

[0064] The servo motor 72 drives the swing arm 74 to rotate; the rotating shaft 73 is connected to the motor shaft of the servo motor 72 through a coupling.

[0065] An end of the swing arm 74 away from the servo motor 72 is equipped with a pneumatic clamp 8 for grabbing the connecting rod at the large cylinder 51. The pneumatic clamp 8 can be expanded and clamped.

[0066] Under the control of the servo motor 72 , the swing arm 74 rotates 180 degrees.

[0067] After the pneumatic clamp 8 grabs the connecting rod, it rotates to the outside of the table 31 along with the swing arm 74 and remains horizontal. The screw assembly 6 drives the connecting rod to move downward and inserts the connecting rod into the expansion sleeve 11.

[0068] Steps:

[0069] Step 1, refer to Figure 4 , the platen 31 moves away from the laser head 21, and the staff places the connecting rod on the frame of the platen 31;

[0070] Step 2, refer to Figure 5 , the platen 31 moves so that the connecting rod moves to the bottom of the laser head 21, and the laser head 21 swings slightly to slot the connecting rod;

[0071] Step 3, refer to Figure 6 , the platen 31 moves away from the laser head 21 again, and at this time the swing arm 74 rotates the opened pneumatic clamp 8 to the position of clamping the connecting rod.

[0072] Step 4, refer to Figure 7 The pneumatic clamp 8 clamps the connecting rod, and the swing arm 74 rotates 180 degrees so that the clamped connecting rod is facing the expansion sleeve 11 below. At this time, the laser head 21 rotates 90 degrees to keep it horizontal, which gives more space for the rotation of the connecting rod and avoids collision between the two.

[0073] Step 5, refer to Figure 8 The clamped connecting rod is driven by the screw assembly 6 and moves to the expansion sleeve 11 below and completes the sleeve installation. The pneumatic clamp 8 opens and the connecting rod is placed in the expansion station after the laser grooving is completed.

[0074] After waiting for the connecting rod to break, the workers took out the broken connecting rod.

[0075] In this design, the two clamping hands of the pneumatic clamp 8 can be rotated 90 degrees, so that they can be fully opened in the vertical plane. When the pneumatic clamp 8 rotates, it will not collide with the connecting rod on the table 31, nor will it collide with the connecting rod on the expansion and breaking station.

[0076] Example 2, a processing device for connecting rod 111, which is different from Example 1 in that, referring to Figure 9 and Figure 10 The swing arm 74 is fixed with a telescopic cylinder 101, and the piston rod of the telescopic cylinder 101 is fixedly connected to the pneumatic clamp 8. This design allows the spacing between the pneumatic clamp 8 and the swing arm 74 to be adjusted, making it easier to grasp, rotate, and place the connecting rod 111.

[0077] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A connecting rod processing device, comprising a laser cutting machine (2) and a pull-down expansion machine (1), characterized in that: The laser cutting machine (2) comprises a swinging laser head (21) and a slide rail (32); a table (31) slides on the slide rail (32); a large cylinder (51) and a small cylinder (52) at both ends of a positioning connecting rod are provided on the table (31); and an upper cylinder (54) for controlling the synchronous lifting and lowering of the large cylinder (51) and the small cylinder (52) is provided below the table (31); The laser cutting machine (2) includes a sliding drive assembly for pushing a platen (31) to move back and forth in a horizontal direction below a laser head (21); A vertical screw assembly (6) is fixed to one side wall of the table (31), and the screw assembly (6) is connected to a lifting rod (71) in a driving manner. A swing arm (74) and a servo motor (72) for driving the swing arm (74) to rotate are installed on the lifting rod (71). An end of the swing arm (74) away from the servo motor (72) is installed with a pneumatic clamp (8) for grabbing a connecting rod at the large cylinder (51), and the rotation angle of the swing arm (74) is greater than or equal to 180 degrees. The pull-down expansion machine (1) is located below the table (31), and an expansion sleeve (11) is provided on the upper surface of the pull-down expansion machine (1); After the pneumatic clamp (8) grabs the connecting rod, it rotates to the outside of the table (31) along with the swing arm (74) and remains horizontal, and the screw rod assembly (6) drives the connecting rod to move downward and inserts the connecting rod into the expansion sleeve (11).

2. The connecting rod processing equipment according to claim 1, characterized in that: The drive assembly comprises a transverse cylinder (33) mounted on the laser cutting machine (2).

3. The connecting rod processing equipment according to claim 2, characterized in that: The two ends of the slide rail (32) are provided with a partition plate (31) to realize a left stopper (41) and a right stopper (42) for limiting the left and right sides of the plate (31); When the platform (31) contacts the left stopper (41), the platform (31) is located directly below the laser head (21); When the table (31) contacts the right stopper (42), the table (31) moves away from the laser head (21), and the pneumatic clamping claw (8) of the table (31) is rotated out to face the expansion sleeve (11) below.

4. The connecting rod processing equipment according to claim 1, characterized in that: The lower ends of the large cylinder (51) and the small cylinder (52) pass through the table (31), and the lower ends of the large cylinder (51) and the small cylinder (52) are fixed with a connecting plate (53). The cylinder body of the upper cylinder (54) is fixed on the lower surface of the table (31), and the piston rod of the upper cylinder (54) is fixed on the connecting plate (53).

5. The connecting rod processing equipment according to claim 1, characterized in that: The swing arm (74) is rotatably connected to the lifting rod (71), and a rotating shaft (73) is fixed to the swing arm (74). The rotating shaft (73) is transmission-connected to the servo motor (72).

6. The connecting rod processing equipment according to claim 1, characterized in that: The rotation angle of the swing arm (74) is 180 degrees.

7. The connecting rod processing equipment according to claim 1, characterized in that: A frame plate (9) for lifting the connecting rod is fixed on the upper surface of the table (31), and there are two frame plates (9).

8. The connecting rod processing equipment according to claim 1, characterized in that: The frame plate (9) is in the shape of a semicircle.

9. The connecting rod processing equipment according to claim 8, characterized in that: The two frame plates (9) are one large and one small. The large frame plate (9) is arranged around the large cylinder (51), and the small frame plate (9) is arranged around the small cylinder (52). The large frame plate (9) is arranged away from the small cylinder (52), and the small frame plate (9) is arranged away from the large cylinder (51).

10. The connecting rod processing equipment according to claim 1, characterized in that: A telescopic cylinder (101) is fixed to the swing arm (74), and a piston rod of the telescopic cylinder (101) and a pneumatic clamp (8) are fixedly connected.

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