Connecting rod bushing press device

Abstract

The present application belongs to the technical field of automation equipment, and particularly relates to a connecting rod tile press-fitting device; the press-fitting device comprises a press-fitting frame body, a connecting rod body / connecting rod cover placement table, a press-fitting cylinder, a first mounting frame and a second mounting frame; the telescopic end of the press-fitting cylinder is connected with the first mounting frame, and the second mounting frame is arranged close to the connecting rod body / connecting rod cover placement table; the upper end of the second mounting frame is provided with a tile placement table, the upper end of the first mounting frame is provided with a third mounting frame, the front end of the third mounting frame is symmetrically provided with side pressing blocks, and the first mounting frame and the second mounting frame are provided with a first spring therebetween; the front end face of the tile is pushed by the side pressing blocks to press-fit the tile into the connecting rod body or the connecting rod cover. In the whole press-fitting process, no component contacts the inner ring face of the tile, the inner ring face of the tile is not contaminated, secondary press-fitting ensures the coaxiality and symmetry of the tile and the connecting rod, and the press-fitting precision is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of connecting rod tile assembly, and particularly relates to a connecting rod tile press-fitting device. Background Art

[0002] Each engine requires four connecting rods. Before assembling the connecting rods, the connecting rod bolts must be loosened, the connecting rod body and connecting rod cap must be disassembled, and the tiles must be press-fitted separately. Traditionally, worker 1 places the connecting rods one by one onto a line tray and scans the connecting rod QR code with a handheld barcode scanner. Four connecting rods of the same weight are grouped together. Worker 2 uses four different markers to color the joints between the connecting rod body and the connecting rod cap green, white, blue, and yellow, respectively. This ensures that the disassembled connecting rod body and connecting rod cap are installed in pairs, with fixed colors installed in fixed positions on the engine. Worker 3 places the connecting rods on a bolt disassembly machine, which manually operates the machine to loosen the connecting rod bolts. Only two connecting rods can be disassembled at a time. Worker 4 picks up the two disassembled connecting rod bodies and connecting rod caps and brings them to the press-fitting machine. Then, they manually place the four tiles into the press-fitting position, and the machine press-fits the tiles into the connecting rod body and connecting rod cap.

[0003] After the tile is press-fitted, it needs to be connected to the crank. If it is contaminated or damaged, it will affect the accuracy of the assembly. Currently, a relatively smooth and soft press head is used to contact the inner ring of the tile and press-fit the tile into the connecting rod body and connecting rod cap. The press head is easily contaminated by impurities and can easily scratch the inner ring of the tile. The press head must be replaced after a period of use, resulting in a short service life and affecting press-fitting efficiency. The current press-fitting method cannot guarantee press-fitting accuracy, and the rate of defective products is extremely high. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects in the prior art that the inner ring of the tile is easily contaminated during the pressing process and the pressing accuracy is low, and to provide a connecting rod tile pressing device that does not contact the inner ring of the tile during the pressing process and has high assembly accuracy.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A connecting rod tile press-fitting device, characterized in that it includes: a press-fitting frame, a connecting rod body / connecting rod cover placement platform arranged on the press-fitting frame, a press-fitting cylinder installed on the press-fitting frame, a first mounting frame and a second mounting frame slidably installed on the press-fitting frame; the telescopic end of the press-fitting cylinder is connected to the first mounting frame, and the second mounting frame is arranged close to the connecting rod body / connecting rod cover placement platform; a tile placement platform is provided at the upper end of the second mounting frame, a third mounting frame is provided at the upper end of the first mounting frame, and side pressure blocks are symmetrically provided at the front end of the third mounting frame, and a first spring is provided between the first mounting frame and the second mounting frame; the front end of the tile is pushed to face the tile and press-fit into the connecting rod body or the connecting rod cover through the side pressure blocks.

[0007] Further, the upper sides of the left and right sides of the tile placement table are oppositely provided with two guide inclined blocks, and the distance between the two guide inclined blocks is closer as it is closer to the connecting rod body / connecting rod cover direction; the front end of the third mounting frame is fixedly provided with a center block, the front end of the third mounting frame has a guide groove extending in the left-right direction, two side pressure blocks are slidingly installed in the guide groove, and the two side pressure blocks are arranged on the left and right sides of the center block, a second spring is installed between the inner side of the side pressure block and the center block, and the outer side of the side pressure block abuts against the inner side of the guide inclined block.

[0008] Further, the opposite sides of the center block and the side pressure block are provided with spring installation holes, and the second spring is installed in the spring installation hole.

[0009] Further, an upper pressure block is further arranged on the upper side of the center block, and the left and right sides of the upper pressure block exceed the center block to press the upper end surface of the tile.

[0010] Further, a first guide rod is fixed on the second mounting frame, the first guide rod penetrates through the first mounting frame, and a first spring is sleeved on the first guide rod between the first mounting frame and the second mounting frame.

[0011] Further, a tile recognition sensor is arranged on the tile placement table.

[0012] Further, it further includes a tile automatic feeding mechanism, the tile automatic feeding mechanism includes: a tile feeding support, a conveying support frame fixedly installed above the tile feeding support, a tile feeding cylinder installed on the tile feeding support, a driving pulley rotatably installed at one end of the conveying support frame, a driven pulley rotatably installed at the other end of the conveying support frame, a tile conveying belt for connecting the driving pulley and the driven pulley, and a rotating rod installed on the rotating shaft of the driving pulley through a one-way bearing; one end of the rotating rod is installed on the outer ring of the one-way bearing, and the other end is connected to the telescopic end of the tile feeding cylinder.

[0013] Further, a push rod is installed on the telescopic end of the tile feeding cylinder, a third connecting rod is installed at the end of the push rod and is arranged vertically, the rotating rod has a third long hole, and the third connecting rod is arranged in the third long hole.

[0014] Further, the tile loading support is provided with a sliding groove parallel to the extension direction of the tile loading cylinder, and a first sliding block and a second sliding block are slidingly installed in the sliding groove; the first sliding block is fixedly connected with the extension shaft of the tile loading cylinder through a first connecting rod; the rotating rod is connected with the second sliding block through a second connecting rod; the first sliding block is provided with a first long hole, the second sliding block is provided with a second long hole, the first connecting rod is arranged in the first long hole, and the second connecting rod is arranged in the second long hole.

[0015] Further, the tile loading support is provided with a sliding groove parallel to the extension direction of the tile loading cylinder, and a first sliding block and a second sliding block are slidingly installed in the sliding groove; the first sliding block is fixedly connected with the extension shaft of the tile loading cylinder through a first connecting rod; the rotating rod is connected with the second sliding block through a second connecting rod; the first sliding block is provided with a first long hole, the second sliding block is provided with a second long hole, the first connecting rod is arranged in the first long hole, and the second connecting rod is arranged in the second long hole.

[0016] The connecting rod tile pressing device has the following advantages:

[0017] 1. The tile loading support is provided with a sliding groove parallel to the extension direction of the tile loading cylinder, and a first sliding block and a second sliding block are slidingly installed in the sliding groove; the first sliding block is fixedly connected with the extension shaft of the tile loading cylinder through a first connecting rod; the rotating rod is connected with the second sliding block through a second connecting rod; the first sliding block is provided with a first long hole, the second sliding block is provided with a second long hole, the first connecting rod is arranged in the first long hole, and the second connecting rod is arranged in the second long hole.

[0018] 2. The connecting rod tile automatic loading device is used for loading the outer end surface of the tile through the tile grabbing manipulator, and only the front end surface of the tile is contacted during the tile pressing process, so that the installation surface of the tile and the crank is prevented from being polluted, and the precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0020] Figure 1 FIG. 1 is a perspective view of a tile pressing device and a tile automatic loading device according to an embodiment of the application;

[0021] Figure 2 FIG. 6 is a rear perspective view of a guide inclined block of the tile pressing device;

[0022] Figure 3 FIG. 8 is an enlarged view of part of the structure of the tile pressing device;

[0023] Figure 4 FIG. 11 is a rear structure view of the tile automatic loading device without some parts;

[0024] Figure 5 FIG. 13 is an enlarged view of part of the structure of the tile automatic loading device.

[0025] In the figure: 60, connecting rod body / connecting rod cover placement platform, 61, press-fitting frame, 62, press-fitting cylinder, 63, first mounting frame, 64, second mounting frame, 65, guide bevel, 66, third mounting frame, 660, guide groove, 67, center block, 68, side pressure block, 69, second spring, 610, upper pressure block, 611, first guide rod, 612, first spring, 614, tile placement platform, 71, tile loading bracket, 710, slide, 72, conveying support frame, 73, tile Feeding cylinder, 76, tile conveyor belt, 77, one-way bearing, 78, rotating rod, 781, third long hole, 79, first slider, 791, first long hole, 711, second slider, 7111, second long hole, 712, first connecting rod, 713, second connecting rod, 714, push rod, 715, third connecting rod, 716, support bar, 717, protective cover, 718, tile grabbing robot, 719, limit block, 81, connecting rod body, 82, connecting rod cover, 15, tile. DETAILED DESCRIPTION

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0027] like Figure 1-Figure 5 The specific embodiment of the connecting rod tile pressing device of the present invention shown can set up two connecting rod tile pressing devices to simultaneously press the connecting rod body 81 and the connecting rod cover 82 of the connecting rod 8, and is equipped with two automatic tile loading mechanisms.

[0028] See also Figure 1-Figure 3The connecting rod tile press-fitting device includes: a press-fitting frame 61. A connecting rod body / connecting rod cover placement platform 60 is provided on the press-fitting frame, a press-fitting cylinder 62 is installed on the press-fitting frame 61, a first mounting frame 63 and a second mounting frame 64 are slidably installed on the press-fitting frame 61; the telescopic end of the press-fitting cylinder 62 is connected to the first mounting frame 63, and the second mounting frame 64 is provided near the connecting rod body / connecting rod cover placement platform 60. The upper end of the second mounting frame 64 is provided with a tile placement platform 614 and two guide bevels 65 arranged opposite to each other. The two guide bevels 65 are located above the left and right sides of the tile placement platform 614, and the closer to the connecting rod body 81 / connecting rod cover 82, the closer the distance between the two guide bevels 65 is. A third mounting bracket 66 is provided at the upper end of the first mounting bracket 63. A center block 67 is fixedly mounted at the front end of the third mounting bracket 66. A guide slot 660 extending in the left-right direction is provided at the front end of the third mounting bracket 66. Two side pressure blocks 68 are slidably connected within the guide slot 660. The two side pressure blocks 68 are symmetrically positioned on the left and right sides of the center block 67. Spring mounting holes are provided on the opposing sides of the center block 67 and the side pressure blocks 68. Second springs 69 are mounted within the spring mounting holes. The side pressure blocks 68 are snugly positioned between the two guide bevel blocks 65. An upper pressure block 610 is also provided on the upper side of the center block 67. The left and right sides of the upper pressure block 610 extend beyond the center block 67 to press against the upper end surface of the tile 15.

[0029] A first guide rod 611 is fixed to the second mounting bracket 64. The first guide rod 611 passes through the first mounting bracket 63. A first spring 612 is sleeved on the first guide rod 611 between the first mounting bracket 63 and the second mounting bracket 64. Of course, in other embodiments of the present invention, one end of the first guide rod 611 may be fixed to the first mounting bracket 63, and the other end may pass through the second mounting bracket 64, thereby achieving the same effect as in this embodiment.

[0030] A tile placement platform 614 is fixedly provided on the lower end surfaces of the two guide bevel blocks 65 , and a tile recognition sensor is provided at the center position of the tile placement platform 614 .

[0031] The inner ring of the tile 15 is used to mount the crank. To ensure precision, the inner ring of the tile should be kept away from contact during the press-fitting process. Manual press-fitting often involves contact with the inner ring of the tile. The press-fitting method designed in this application only contacts the end face of the tile and does not contaminate the inner ring of the tile at all.

[0032] The specific working process of pressing the connecting rod body 81 or the connecting rod cover 82 into the tile is as follows:

[0033] First, the pressing cylinder 62 extends and drives the first mounting bracket 63 and the second mounting bracket 64 to move closer to the connecting rod body / connecting rod cover placement platform 60 until the front end of the tile placement platform 614 abuts against the connecting rod body / connecting rod cover placement platform 60. At this time, the second mounting bracket 64 cannot continue to move forward, and the pressing cylinder 62 continues to extend, the first spring 612 is compressed, and the center block 67, the side pressure block 68 and the upper pressure block 610 continue to move forward. Specifically, the side pressure block 68 gradually compresses the second spring 69 inward as the distance between the two guide bevel blocks 65 gets closer and closer, and contacts the front end surface of the tile, pushing the tile forward gradually closer to the connecting rod body 81 / connecting rod cover 82, and at the same time, the tile is slightly rounded inward under the guidance of the two guide bevel blocks 65; at the same time, the upper pressure block 610 presses the tile from above to ensure that it does not pop up when pressed into the connecting rod body 81 or the connecting rod cover 82.

[0034] It should be explained that the tile is a metal sheet with a certain elasticity, which can ensure that it is tightly pressed into the connecting rod body 81 and the connecting rod cover 82.

[0035] This technical solution of the present invention realizes the two-step press-fitting of the tile, has a compact structure, and is easy to control. It can ensure that the inner ring surface of the tile will not be contaminated during the press-fitting process, and improves the coaxiality and symmetry of the tile and the connecting rod.

[0036] See also Figure 1 and Figure 4 、 Figure 5 The automatic tile loading mechanism is arranged on the side of the connecting rod tile pressing device, and is used to load tiles one by one onto the tile placement table 614. The automatic tile loading mechanism includes: a tile loading bracket 71, a conveying support frame 72 fixedly mounted above the tile loading bracket 71, a tile loading cylinder 73 mounted on the tile loading bracket 71, a driving pulley (not shown) rotatably mounted on one end of the conveying support frame 72, a driven pulley (not shown) rotatably mounted on the other end of the conveying support frame 72, a tile conveyor belt 76 for connecting the driving pulley and the driven pulley, and a rotating rod 78 mounted on the rotating shaft of the driving pulley through a one-way bearing 77; the tile loading bracket 71 is provided with a slide groove 710 parallel to the extension direction of the tile loading cylinder 73, and a first slider 79 and a second slider 711 are slidably mounted in the slide groove 710; the first slider 79 is fixedly connected to the extension shaft of the tile loading cylinder 73 through a first connecting rod 712. One end of the rotating rod 78 is mounted on the outer ring of the one-way bearing 77, and the other end has a third elongated hole 781 and is connected to the second slider 711 via the second connecting rod 713. A push rod 714 is fixedly mounted on the telescopic end of the tile feeding cylinder 73, and a third connecting rod 715 is mounted perpendicular to the push rod 714 at the end. The third connecting rod 715 is inserted into the third elongated hole 781.

[0037] The first slider 79 has a first long hole 791 , the second slider 711 has a second long hole 7111 , the first connecting rod 712 is inserted into the first long hole 791 , and the second connecting rod 713 is inserted into the second long hole 7111 .

[0038] The tile materials are manually placed on the tile conveyor belt 76. Two parallel support bars 716 are set on the inner side of the conveyor support frame 72. The left and right sides of the tile conveyor belt 76 are overlapped on the two support bars 716. The two support bars 716 assist in bearing the weight of the tiles 15.

[0039] Since the inner ring of the tile 15 is used to install the crank, a high degree of precision and cleanliness must be ensured. In order to prevent the tile 15 from being contaminated, a protective cover 717 made of organic glass is installed above the conveying support frame 72. The protective cover 717 is hinged to the conveying support frame 72.

[0040] A tile grabbing robot 718 is provided above the conveying support frame 72, and a limit block 719 made of soft material is provided at the front end of the conveying support frame 72. When the tile 15 reaches the limit block 719, the photoelectric sensor located on the tile grabbing robot 718 detects that the tile 15 is in place, grabs the tile 15 and places it on the tile placement table 614.

[0041] The automatic tile feeding mechanism works as follows: Each time the tile feeding cylinder 73 extends a fixed length, it pushes the push rod 714 forward, driving the rotating rod 78 to rotate. Simultaneously, under the action of the one-way bearing 77, the forward extension of the feeding cylinder 73 drives the rotating shaft of the driving pulley to rotate and transport the tiles toward the connecting rod tile pressing device, ensuring that the distance of each movement is the same. Due to the use of the one-way bearing 77, the driving pulley does not rotate when the feeding cylinder 73 retracts. The first slider 79 and the second slider 711 guide the extension of the feeding cylinder 73, ensuring the smooth extension and retraction of the feeding cylinder 73.

[0042] It should be understood that the specific embodiments described above are only used to explain the present invention and are not intended to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A connecting rod tile press-fitting device, characterized in that: include: A press-fitting frame (61), a connecting rod body / connecting rod cover placement platform (60) arranged on the press-fitting frame (61), a press-fitting cylinder (62) installed on the press-fitting frame (61), a first mounting frame (63) and a second mounting frame (64) slidably mounted on the press-fitting frame (61); the telescopic end of the press-fitting cylinder (62) is connected to the first mounting frame (63), and the second mounting frame (64) is arranged close to the connecting rod body / connecting rod cover placement platform (60); a tile placement platform (614) is provided at the upper end of the second mounting frame (64), a third mounting frame (66) is provided at the upper end of the first mounting frame (63), and a side pressure block (68) is symmetrically provided at the front end of the third mounting frame (66), and a first spring (612) is provided between the first mounting frame (63) and the second mounting frame (64); the front end surface of the tile is pushed by the side pressure block (68) to press the tile into the connecting rod body or the connecting rod cover; Two guide bevel blocks (65) are arranged above the left and right sides of the tile placement platform (614), and the closer the two guide bevel blocks (65) are to the connecting rod body (81) / connecting rod cover (82), the closer the distance between them is. A center block (67) is fixedly arranged at the front end of the third mounting frame (66), and the front end of the third mounting frame (66) has a guide groove (660) extending in the left and right directions. The two side pressure blocks (68) are slidably installed in the guide groove (660), and the pressure blocks (68) on both sides are arranged on the left and right sides of the center block (67). A second spring (69) is installed between the inner side of the side pressure block (68) and the center block (67), and the outer side of the side pressure block (68) abuts against the inner side of the guide bevel block (65). An upper pressing block (610) is further provided on the upper side surface of the central block (67), and the left and right sides of the upper pressing block (610) extend beyond the central block (67) to press the upper end surface of the tile (15); The specific working process of pressing the tile into the connecting rod body (81) or the connecting rod cover (82) is as follows: First, the pressing cylinder (62) extends and drives the first mounting frame (63) and the second mounting frame (64) to move closer to the connecting rod body / connecting rod cover placement platform (60) until the front end of the tile placement platform (614) abuts against the connecting rod body / connecting rod cover placement platform (60). At this time, the second mounting frame (64) cannot continue to move forward, the pressing cylinder (62) continues to extend, the first spring (612) is compressed, and the center block (67), the side pressure block (68) and the upper pressure block (610) continue to move forward. The movement is as follows: the side pressure block (68) gradually compresses the second spring (69) inward as the distance between the two guide oblique blocks (65) becomes closer and closer, and contacts the front end surface of the tile, pushing the tile forward gradually closer to the connecting rod body (81) / connecting rod cover (82), and at the same time, the tile is slightly rounded inward under the guidance of the two guide oblique blocks (65); at the same time, the upper pressure block (610) presses the tile from above to ensure that it does not pop up when pressed into the connecting rod body (81) or the connecting rod cover (82).

2. The connecting rod tile press-fitting device according to claim 1, characterized in that: The opposite sides of the central block (67) and the side pressure block (68) are both provided with spring mounting holes, and the second spring (69) is mounted in the spring mounting hole.

3. The connecting rod tile press-fitting device according to claim 1, characterized in that: A first guide rod (611) is fixed on the second mounting frame (64), the first guide rod (611) passes through the first mounting frame (63), and a first spring (612) is sleeved on the first guide rod (611) between the first mounting frame (63) and the second mounting frame (64).

4. The connecting rod tile press-fitting device according to claim 1, characterized in that: The tile placement platform (614) is provided with a tile recognition sensor.

5. The connecting rod tile press-fitting device according to claim 4, characterized in that: The invention also includes an automatic tile feeding mechanism, which includes: a tile feeding bracket (71), a conveying support bracket (72) fixedly mounted above the tile feeding bracket (71), a tile feeding cylinder (73) mounted on the tile feeding bracket (71), a driving pulley rotatably mounted on one end of the conveying support bracket (72), a driven pulley rotatably mounted on the other end of the conveying support bracket (72), a tile conveying belt (76) for connecting the driving pulley and the driven pulley, and a rotating rod (78) mounted on the rotating shaft of the driving pulley through a one-way bearing (77); one end of the rotating rod (78) is mounted on the outer ring of the one-way bearing (77), and the other end is connected to the telescopic end of the tile feeding cylinder (73).

6. The connecting rod tile press-fitting device according to claim 5, characterized in that: The telescopic end of the tile feeding cylinder (73) is equipped with a push rod (714), the end of the push rod (714) is equipped with a third connecting rod (715) arranged perpendicular to the push rod, and the rotating rod (78) has a third long hole (781) on it, and the third connecting rod (715) is inserted into the third long hole (781).

7. The connecting rod tile press-fitting device according to claim 6, characterized in that: The tile feeding bracket (71) is provided with a slide groove (710) parallel to the telescopic direction of the tile feeding cylinder (73), and a first slider (79) and a second slider (711) are slidably installed in the slide groove (710); the first slider (79) is fixedly connected to the telescopic shaft of the tile feeding cylinder (73) through a first connecting rod (712); the rotating rod (78) is connected to the second slider (711) through a second connecting rod (713); the first slider (79) has a first long hole (791), and the second slider (711) has a second long hole (7111); the first connecting rod (712) is inserted into the first long hole (791), and the second connecting rod (713) is inserted into the second long hole (7111).

8. The connecting rod tile press-fitting device according to claim 7, characterized in that: A tile grabbing robot (718) is provided above the conveying support frame (72), and the tile grabbing robot (718) grabs the outer ring surface of the tile (15) and places it on the tile placement table (614).

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