Feeding production line and feeding method for engine assembly

Abstract

The present invention relates to the technical field of engine assembly, and specifically discloses a feeding production line and a feeding method for engine assembly. The feeding production line includes a first conveying mechanism, a second conveying mechanism, a first lifting mechanism, a clamping mechanism, a third conveying mechanism, a second lifting mechanism, a camshaft transfer mechanism and a controller. The first conveying mechanism is used to convey a tray equipped with a cylinder head and a camshaft box to the first lifting mechanism, and the tray is lifted to the first position by the first lifting mechanism. The second conveying mechanism is used to convey the cylinder body, and the clamping mechanism is used to clamp the cylinder head at the first position for assembly with the cylinder body. The third conveying mechanism is used to convey the camshaft to the second conveying mechanism for assembly with the cylinder body and cylinder head. The camshaft box equipped with a workpiece at the first position is exchanged with the empty camshaft box at the second lifting mechanism by the camshaft transfer mechanism, and the empty or loaded camshaft box at the third conveying mechanism is moved by the second lifting mechanism, thereby realizing the automatic assembly of the engine.

Description

Technical Field

[0001] The present invention relates to the field of engine assembly, and in particular to a material feeding production line and a material feeding method for engine assembly. Background Art

[0002] When assembling an engine, the cylinder block and cylinder head need to be installed first. After the cylinder block and cylinder head are installed, the camshaft needs to be placed on the cylinder head to complete the installation of the engine. In the prior art, the cylinder head and camshaft are transported separately, and the installation of the cylinder head and cylinder block requires manual handling, and the installation time of the cylinder block and cylinder head is uncertain. This makes the camshaft transmission speed mismatched with the speed of the installed cylinder block and cylinder head, and the overall assembly efficiency of the engine is low. Summary of the invention

[0003] The present invention discloses a feeding production line for engine assembly, which installs a cylinder head and a cylinder block by clamping a clamping mechanism, and moves a camshaft by a camshaft transfer mechanism, so that a transmission speed of the camshaft matches a transmission speed of the cylinder block, thereby improving the overall assembly efficiency of the engine.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] Feeding line for engine assembly, including:

[0006] First rack;

[0007] A first conveying mechanism, for conveying the cylinder head and the camshaft box;

[0008] A second conveying mechanism, used for conveying the cylinder body;

[0009] A first lifting mechanism, disposed downstream of the first conveying mechanism, for lifting the cylinder head and the camshaft box with the workpiece at the first conveying mechanism to a first position, and for lowering the empty camshaft box from the first position to the first conveying mechanism;

[0010] A clamping mechanism, mounted on the first frame, for clamping the cylinder head at the first position and installing it on the cylinder body;

[0011] A third conveying mechanism is arranged downstream of the second conveying mechanism, the third conveying mechanism comprises a conveying frame, a first conveying roller group and a second conveying roller group driven by a motor, the first conveying roller group and the second conveying roller group each comprise at least two conveying rollers rotatably connected to the conveying frame, the first conveying roller group and the second conveying roller group are arranged in parallel and have opposite conveying directions;

[0012] A second lifting mechanism, disposed upstream of the third conveying mechanism, for lifting the empty camshaft box at the third conveying mechanism to a second position, and for lowering the camshaft box loaded with workpieces from the second position to the third conveying mechanism;

[0013] The camshaft transfer mechanism is installed on the first frame, and is used to move the camshaft box with workpieces from the first position to the second position, and to move the empty camshaft box from the second position to the first position.

[0014] Preferably, the camshaft transfer mechanism is arranged between the first lifting mechanism and the second lifting mechanism, and the camshaft transfer mechanism comprises:

[0015] a first conveying rail, mounted on the first frame;

[0016] a second conveying rail, the second conveying rail being slidably connected to the first conveying rail, the second conveying rail being perpendicular to the first conveying rail;

[0017] A first mounting seat, slidably connected to the second conveying rail;

[0018] A first linear drive and a second linear drive, wherein the first linear drive and the second linear drive are both fixedly connected to the first mounting seat;

[0019] The first clamping member and the second clamping member are fixedly connected to the output ends of the first linear drive and the second linear drive, respectively, and the first clamping member and the second clamping member are both used to clamp the camshaft box.

[0020] Preferably, the first clamping member and the second clamping member have the same structure, the first clamping member comprises a bidirectional cylinder and a clamping rod, the bidirectional cylinder is installed at the output end of the first linear actuator, and the clamping rod is fixedly connected to the output end of the bidirectional cylinder.

[0021] Preferably, the clamping mechanism comprises a manipulator and a clamping claw, the clamping claw is mounted on the manipulator, and the clamping claw comprises:

[0022] a second mounting base;

[0023] A third linear actuator is mounted on the second mounting seat;

[0024] A first clamping rod, fixedly connected to the second mounting seat; and

[0025] The second clamping rod is fixedly connected to the output end of the third linear actuator. The second clamping rod is arranged beside the first clamping rod. A slope is arranged at the lower part of the second clamping rod. The slope is located below the first clamping rod, and the thickness of the slope gradually increases from top to bottom.

[0026] Preferably, the bottom surface of the first clamping rod protrudes downward to form a first smooth curved surface, and the first smooth curved surface is tangent to the side curved surface of the first clamping rod; the bottom surface of the second clamping rod protrudes downward to form a second smooth curved surface, and the second smooth curved surface is tangent to the side curved surface of the second clamping rod;

[0027] The upper portion of the slope is inclined, and the lower portion of the slope is connected to the second smooth curved surface.

[0028] Preferably, the clamp also includes a sleeve, which is fixedly connected to the second mounting seat; the output shaft of the linear drive is arranged in the sleeve, the first clamping rod is fixedly connected to the inner wall of the sleeve, the first clamping rod extends downward through the sleeve, the second clamping rod is arranged in the inner cavity of the sleeve, and the second clamping rod extends downward through the sleeve; a first spring is arranged in the inner cavity of the sleeve, and one end of the first spring abuts against the second clamping rod.

[0029] Preferably, the engine assembly feeding production line further comprises a wiping mechanism, which is installed beside the second conveying mechanism and is used to wipe the end surface of the cylinder head. The wiping mechanism comprises:

[0030] A tensioning frame, used for tensioning the wipe paper;

[0031] A reel roller, rotatably connected to the tensioning frame, for reeling in the wipe paper;

[0032] A placement roller, rotatably connected to the tensioning frame, for placing wipe paper;

[0033] The motor is installed on the tensioning frame, the motor is connected to the winding roller in a transmission manner, and the placing roller rotates synchronously with the winding roller.

[0034] Preferably, the tensioning frame comprises:

[0035] Second rack;

[0036] A first roller and a first connecting block, wherein one end of the first roller is rotatably connected to the first connecting block, and the first connecting block is slidably connected to the second frame;

[0037] A second roller and a second connecting block, one end of the second roller is rotatably connected to the second connecting block, the second connecting block is slidably connected to the second frame, and the second roller is located below the first roller;

[0038] a first elastic member, mounted on the second frame, and configured to provide an upward force to the first connecting block;

[0039] The second elastic member is installed on the second frame and is used to provide a downward force for the second connecting block. The upward force provided by the first elastic member is greater than the downward force provided by the second elastic member.

[0040] Preferably, the wiping mechanism further includes a third roller, the third roller is rotatably connected to the second frame, the third roller is arranged between the first roller and the winding roller, and the third roller is located below the first roller.

[0041] Preferably, the wiping mechanism also includes a fourth roller and a fifth roller, and the fourth roller and the fifth roller are both rotatably connected to the second frame, the fourth roller is arranged above the fifth roller, and a gap is arranged between the fourth roller and the fifth roller; the fourth roller is arranged beside the placement roller, and the fourth roller is located below the second roller.

[0042] Preferably, the first conveying mechanism comprises a third conveying roller group and a fourth conveying roller group driven by a motor, the third conveying roller group and the fourth conveying roller group have opposite conveying directions, and the third conveying roller group and the fourth conveying roller group each comprise at least two conveying rollers.

[0043] Preferably, the fourth conveying roller group is arranged below the third conveying roller group, the third conveying roller group is used to convey the cylinder head and the camshaft box with the workpiece, and the fourth conveying roller group is used to convey the empty camshaft box;

[0044] The first lifting mechanism is used to lift the cylinder head and the camshaft box at the third conveying roller group to the first position, and the first lifting mechanism is used to lower the camshaft box at the first position to the fourth conveying roller group.

[0045] Preferably, the first lifting mechanism includes a first lifting machine, a first placing plate and a first roller, the first lifting machine is used to lift the first placing plate, the first placing plate is used to place the cylinder head and the camshaft box, the first roller is driven by a motor and installed on the first placing plate; a first travel switch is provided on the upper surface of the first placing plate.

[0046] Preferably, the second lifting mechanism includes a second lifting machine and a second placing plate, the second lifting machine is used to lift the second placing plate, the second placing plate is used to place the camshaft box, the second roller is driven by a motor and installed on the second placing plate; a second travel switch is arranged on the upper surface of the second placing plate.

[0047] The present invention also discloses a feeding method for an engine assembly feeding production line. The feeding method for an engine assembly feeding production line is applied to the above-mentioned engine feeding production line, and is characterized in that the feeding method comprises:

[0048] Step S1): the first conveying mechanism conveys the cylinder head and the camshaft box;

[0049] Step S2): the second conveying mechanism conveys the cylinder body;

[0050] Step S3): when the cylinder head and the camshaft box containing the workpiece are transferred to the first lifting mechanism, the first lifting mechanism lifts the cylinder head and the camshaft box containing the workpiece to a first position;

[0051] Step S4): The second conveying mechanism conveys the cylinder head to the third position and takes visual photos;

[0052] Step S5): the cam transfer mechanism moves the camshaft box containing the workpiece at the first position to the second position;

[0053] Step S6): The clamping mechanism clamps the cylinder head at the first position to above the second position, takes visual photos, compares the two photo information, and after determining the position of the cylinder head, the clamping mechanism clamps the cylinder head and the cylinder body for installation.

[0054] Step S7): the second lifting mechanism lowers the camshaft box containing the workpiece to the third conveying mechanism;

[0055] Step S8): the second conveying mechanism continues to convey the installed cylinder head and cylinder body to the downstream of the second conveying mechanism;

[0056] Step S9): After the first conveying roller group conveys the camshaft box with the workpiece to the downstream of the second conveying mechanism, the workpiece is installed on the engine cylinder block, and the empty camshaft box with the workpiece removed is transferred to the second conveying roller group, and the second conveying roller group returns the empty camshaft box to the second lifting mechanism;

[0057] Step S10): the second lifting mechanism lifts the empty camshaft box to a second position;

[0058] Step S11): the cam transfer mechanism moves the empty camshaft box at the second position to the first position;

[0059] Step S12): The first lifting mechanism lowers the unloaded camshaft box to the first conveying mechanism.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] The present invention provides a feeding production line for engine assembly, which uses a clamping mechanism to clamp the cylinder head and the cylinder body for installation, so that the installation efficiency of the cylinder head and the cylinder body is improved. The empty camshaft box at the second position is moved to the first lifting mechanism by the camshaft transfer mechanism, and the camshaft box with the workpiece at the first lifting mechanism is moved to the second position, so that the utilization rate of the camshaft box is improved. The speed of the third conveying mechanism to convey the camshaft box matches the speed of the second conveying device to convey the cylinder body, so that the efficiency of the engine pile body device is improved.

[0062] In addition, a wiping mechanism is provided, and the wiping mechanism cooperates with the clamping mechanism, so that the cylinder head is wiped by the wiping mechanism during the clamping process, which further improves the efficiency of engine assembly. The first elastic member cooperates with the second elastic member, so that the wiping paper is always tensioned, ensuring a good wiping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 A schematic diagram of the structure of a feeding production line for engine assembly provided by an embodiment of the present invention from a first perspective;

[0064] Figure 2 A schematic diagram of the structure of a feeding production line for engine assembly provided by an embodiment of the present invention from a second perspective;

[0065] Figure 3 A schematic diagram of the structure of a feeding production line for engine assembly provided by an embodiment of the present invention from a third perspective;

[0066] Figure 4 A schematic diagram of the structure of a first lifting mechanism provided in one embodiment of the present invention;

[0067] Figure 5 A schematic diagram of the installation structure of a placement plate, a tray, and a camshaft box provided in one embodiment of the present invention;

[0068] Figure 6 A schematic diagram of the structure of a clamping mechanism provided by an embodiment of the present invention;

[0069] Figure 7 A schematic diagram of the structure of a clamping jaw provided in one embodiment of the present invention;

[0070] Figure 8 for Figure 7 A magnified view of the structure of part A;

[0071] Fig. 9 A schematic diagram of the clamping principle of a clamping jaw provided in one embodiment of the present invention;

[0072] Fig.10 A schematic diagram of the sleeve position structure provided by an embodiment of the present invention;

[0073] Fig.11A schematic diagram of a second lifting mechanism and a third conveying structure provided in one embodiment of the present invention;

[0074] Fig.12 for Fig.11 Exploded diagram of

[0075] Fig.13 for Fig.12 A magnified view of part A;

[0076] Fig.14 for Fig.12 A magnified view of part B;

[0077] Fig.15 A schematic structural diagram of a camshaft transfer mechanism provided by an embodiment of the present invention from a first perspective;

[0078] Fig.16 A schematic structural diagram of a camshaft transfer mechanism provided by an embodiment of the present invention from a second viewing angle;

[0079] Fig.17 for Fig.16 Enlarged view of part C;

[0080] Fig.18 A schematic diagram of a wiping mechanism provided by an embodiment of the present invention from a first viewing angle;

[0081] Fig.19 A schematic diagram of a wiping mechanism provided by an embodiment of the present invention from a second viewing angle;

[0082] Fig. 20 A schematic diagram of a wiping mechanism provided by an embodiment of the present invention from a third viewing angle;

[0083] Fig.21 A schematic diagram of the structure of a tensioning frame provided by an embodiment of the present invention from a first viewing angle;

[0084] Fig. 22 for Fig.21 Exploded diagram of

[0085] Fig.23 A schematic diagram of the structure of a tensioning frame provided by an embodiment of the present invention from a second viewing angle;

[0086] Fig.24 A schematic diagram of the structure of a first elastic member provided in one embodiment of the present invention;

[0087] Fig.25 for Fig.24 Exploded diagram of

[0088] Fig.26 A schematic diagram of the structure of a second elastic member provided in one embodiment of the present invention;

[0089] Fig. 27A schematic structural diagram of a first transmission mechanism provided in one embodiment of the present invention.

[0090] Main component symbol description: 1-first conveying mechanism, 11-third conveying roller group, 12-fourth conveying roller group, 2-second conveying mechanism, 3-first lifting mechanism, 31-first lifting machine, 32-first placing plate, 321-first roller table, 322-first travel switch, 4-clamping mechanism, 41-manipulator, 42-clamping claw, 421-second mounting seat, 422-third linear drive, 423-first clamping rod, 4231-first smooth surface, 424 - second clamping rod, 4241- ramp, 4242- second smooth surface, 425- gap, 426- sleeve, 4261- first spring, 5- third conveying mechanism, 51- conveying frame, 511- ball bearing, 52- first conveying roller group, 521- third stroke switch, 55- second conveying roller group, 6- second lifting mechanism, 61- second lifting machine, 62- second placing plate, 621- second roller, 622- second stroke switch, 7- cam transfer mechanism, 7 1-first conveying rail, 72-second conveying rail, 73-first mounting seat, 74-first linear drive, 75-second linear drive, 76-first clamping member, 761-bidirectional cylinder, 762-clamping rod, 77-second clamping member, 8-wiping mechanism, 81-tensioning frame, 811-second frame, 812-first roller, 813-first connecting block, 814-second roller, 815-second connecting block, 816-first elastic member, 8161-third mounting seat Mounting seat, 8162-first connecting rod, 8163-second spring, 8168-nut, 817-second elastic member, 8171-fourth mounting seat, 8172-second connecting rod, 8173-third spring, 818-first long hole, 819-second long hole, 82-winding roller, 83-placing roller, 84-motor, 85-third roller, 86-fourth roller, 87-fifth roller, 88-wiping paper, 9-controller, A1-camshaft box, A2-tray. DETAILED DESCRIPTION

[0091] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0092] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0093] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0094] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0095] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0096] The technical solution of the present invention will be further described below in conjunction with embodiments and drawings.

[0097] Example

[0098] See also Figure 1-27The engine assembly feeding production line provided by the present invention includes a first frame, a first conveying mechanism 1, a second conveying mechanism 2, a first lifting mechanism 3, a clamping mechanism 4, a third conveying mechanism 5, a second lifting mechanism 6, a camshaft transfer mechanism and a controller 9. The first conveying structure is used to convey the cylinder head and the camshaft box A1, and the second conveying mechanism 2 is used to convey the cylinder body. The first lifting mechanism 3 is arranged downstream of the first conveying mechanism 1. When the cylinder head and the camshaft box A1 with the workpiece moved to the first lifting mechanism 3, the first lifting mechanism 3 lifts the cylinder head and the camshaft box A1 with the workpiece to the first position. The clamping mechanism 4 is installed on the first frame, and is used to clamp the cylinder head in the first position to the second conveying mechanism 2 for assembly with the cylinder body. The third conveying mechanism 5 is arranged downstream of the second conveying mechanism 2. The third conveying mechanism 5 includes a conveying frame 51, a first conveying roller group 52 and a second conveying roller group 55 driven by a motor. The first conveying roller group 52 and the second conveying roller group 55 each include at least two conveying rollers rotatably connected to the conveying frame 51. The first conveying roller group 52 and the second conveying roller group 55 are arranged in parallel and the conveying directions of the two are opposite. The second lifting mechanism 6 is arranged upstream of the third conveying structure, and is used to lift the empty camshaft box A1 at the third conveying mechanism 5 to the second position, and is used to lower the camshaft box A1 with workpieces from the second position to the third conveying mechanism 5. The cam transfer mechanism 7 is installed on the first frame, and the cam transfer mechanism 7 is arranged between the first lifting mechanism 3 and the second lifting mechanism 6, and is used to move the camshaft box A1 with workpieces from the first conveying mechanism 1 to the third conveying mechanism 5, and is used to move the empty camshaft box A1 from the third conveying mechanism 5 to the first conveying mechanism 1. The third conveying mechanism 5 is provided with a manual operation position near the second conveying mechanism 2. When the cylinder block and cylinder head installed on the second conveying mechanism 2 are conveyed to the downstream of the third conveying mechanism 5, the staff takes out the workpiece from the camshaft box A1 and places the workpiece on the cylinder head. The first conveying roller group 52 is used to convey the camshaft box A1 with the workpiece, and the second conveying roller group 55 is used to convey the empty camshaft box A1. After taking out the workpiece, the staff moves the empty camshaft box A1 from the first conveying roller group 52 to the second conveying roller group 55. The second conveying roller group 55 conveys the empty camshaft box A1 to the second lifting machine 61, and the empty camshaft box A1 is lifted to the second position by the second lifting mechanism 6. After the empty camshaft box A1 raised to the second position is moved by the camshaft transfer mechanism and the position of the camshaft box A1 with the workpiece in the first position is exchanged, the camshaft box A1 with the workpiece is lowered from the second position to the first conveying roller group 52, and the material is loaded by the first conveying roller group 52. By setting the clamping mechanism 4, the cylinder head can be automatically installed. The first conveying roller group 52 is continuously replenished with camshaft boxes A1 loaded with workpieces, and the empty camshaft boxes A1 are continuously discharged from the second conveying roller group 55. The camshaft boxes A1 are circulated through the first conveying roller group 52 and the second conveying roller group 55, so that the utilization rate of the camshaft boxes A1 is improved and the number of camshaft boxes A1 required is less.At the same time, the cylinder head and the camshaft box A1 with the workpiece are simultaneously transported by the first transport mechanism 1, reducing the required transport equipment. At the same time, the transport speed of the camshaft box A1 with the workpiece is adapted to the transport speed of the cylinder body on the second transport mechanism. When the cylinder body is transported to the third transport mechanism 5, the camshaft box A1 with the workpiece is transported to the downstream of the second transport mechanism 2. The staff can easily and quickly install the workpiece on the cylinder body, and the efficiency of engine assembly is greatly improved.

[0099] Specifically, the camshaft box A1 containing the workpieces lowered from the second lifting mechanism 6 is transported to the manual operation position by the first transport roller group 52, so as to facilitate the staff to load the materials.

[0100] It should be understood that the second conveying mechanism 2 is an existing production line. In order to adapt to the on-site space and not change the conveying speed of the existing second conveying mechanism 2 (matching the conveying speed of the second conveying mechanism 2), the first lifting mechanism 3 and the second lifting mechanism 6 are set on the engine assembly loading production line, and the camshaft transferring mechanism is set above the first lifting mechanism 3 and the second lifting mechanism 6.

[0101] Specifically, the camshaft transfer mechanism includes a first transmission rail 71, a second transmission rail 72, a first mounting seat 73, a first linear drive 74, a second linear drive 75, a first clamp 76, and a second clamp 77. The first transmission rail 71 is installed on the first frame, and the first transmission rail 71 extends along the direction in which the first lifting mechanism 3 and the second lifting mechanism 6 are connected. The second transmission rail 72 is perpendicular to the first transmission rail 71, and the second transmission rail 72 is slidably connected to the first transmission rail 71, and the first mounting seat 73 is slidably connected to the second transmission rail 72. The first clamp 76 and the second clamp 77 are both used to clamp the camshaft box A1. The first clamp 76 is installed at the output end of the first linear drive 74, and the second clamp 77 is the output end of the first mounting seat 73 and the second linear drive 75. The first linear drive 74 and the second linear drive 75 are both installed on the first mounting seat 73. Under the guidance of the first conveying rail 71 and the second conveying rail 72 , the first mounting seat 73 can slide to any position in the plane, and then the first clamping member 76 and the second clamping member 77 can clamp the camshaft box A1 at any position in the plane.

[0102] It can be understood that a driving member is provided on both the first conveying rail 71 and the second conveying rail 72. The driving member on the first conveying rail 71 is used to drive the second conveying rail 72 to slide on the first conveying rail 71, and the driving member provided on the second conveying rail 72 is used to drive the first mounting seat 73 to slide on the second conveying rail 72. The setting of the driving member is a common means in the art, so it will not be described in detail here.

[0103] Optionally, in one embodiment of the present invention, the first linear drive 74 may be a linear motor, a cylinder, and a screw rod structure.

[0104] For programming convenience, the height of the first position and the height of the second position are usually set to be the same.

[0105] Since the heights at the first position and the second position are constant, that is, the first linear drive 74 needs to be extended to the same length each time, the linear motor and the screw structure are slow when driving the first clamp 76 downward, and the long-term reciprocating motion is prone to failure and troublesome maintenance.

[0106] Preferably, in one embodiment of the present invention, the first linear drive 74 is a cylinder, which has a simple structure, can well adapt to up and down reciprocating motion, and is easy to maintain.

[0107] Optionally, in one embodiment of the present invention, the second linear drive 75 may be a linear motor, a cylinder, and a screw rod structure.

[0108] Since the heights at the first position and the second position are constant, that is, the second linear drive 75 needs to be extended to the same length each time, the linear motor and the screw structure are slow when driving the second clamping member 77 downward, and long-term reciprocating motion is prone to failure and troublesome maintenance.

[0109] Preferably, in one embodiment of the present invention, the second linear actuator 75 is a cylinder, which has a simple structure, can well adapt to up and down reciprocating motion, and is easy to maintain.

[0110] It can be understood that the first mounting seat 73 is initially located above the second position. When the cam transfer mechanism 7 is working, the second linear driver 75 drives the second clamping member 77 downward, and the second clamping member 77 clamps the empty camshaft box A1 at the second position, and then the second linear driver 75 is reset. Then the second conveying rail 72 moves along the first conveying rail 71 to above the first position, and the first mounting seat 73 slides along the second conveying rail 72 until the first clamping member 76 moves to the top of the camshaft box A1 with the workpiece. The first linear driver 74 drives the first clamping member 76 downward, and the first linear driver 74 is reset after clamping the camshaft box A1 with the workpiece. The first mounting seat 73 moves again, so that the second clamping member 77 is aligned with the first position, and the second linear driver 75 drives the second clamping member 77 downward. After the second clamping member 77 places the empty camshaft box A1 at the first position, the second linear driver 75 is reset. Then the second transfer rail 72 moves to the initial position, and the first clamping member 76 moves downward under the drive of the first linear drive 74 to place the camshaft box A1 containing the workpiece at the first position.

[0111] When the camshaft box A1 in the first position is replaced, the first lifting mechanism 3 drives the empty camshaft box A1 to move downward to the side of the first conveying mechanism 1. After the empty camshaft box A1 passes through, the first conveying mechanism 1 again conveys the camshaft box A1 containing the workpiece to the first lifting mechanism 3. The first lifting mechanism 3 lifts the camshaft box A1 containing the workpiece to the first position.

[0112] When the camshaft box A1 in the second position is replaced, the second lifting mechanism 6 drives the camshaft box A1 containing the workpiece to move downward to the upstream of the third conveying mechanism 5. After the first conveying roller group 52 passes the camshaft box A1 containing the workpiece, the second conveying roller group 55 again conveys the camshaft box A1 containing the workpiece to the second lifting mechanism 6. The second lifting mechanism 6 lifts the empty camshaft box A1 to the second position.

[0113] It should be understood that the camshaft box A1 loaded with workpieces on the first conveying roller set 52 should be transferred to the second conveying roller set 55 after the workpieces are removed, so as to realize the circulation of the camshaft box A1.

[0114] Since the first conveying roller group 52 and the second conveying roller group 55 are arranged in parallel, a ball 511 is arranged on the conveying frame 51 on one side of the first conveying roller group 52 and the second conveying roller group 55 close to the second conveying mechanism 2 (the end of the first conveying roller group 52 and the starting end of the second conveying roller group 55), and the ball 511 is arranged between the first conveying roller group 52 and the second conveying roller group 55.

[0115] After the operator takes out the camshaft in the camshaft box A1 , the operator pushes the camshaft box A1 on the first conveying roller set 52 , so that the camshaft box A1 moves laterally and moves to the second conveying roller set 55 under the rolling of the balls 511 .

[0116] Preferably, in one embodiment of the present invention, in order to enable the first conveying roller group 52 and the second conveying roller group 55 to cooperate with the second lifting mechanism 6 to convey the camshaft box A1 after the camshaft box A1 on the first conveying roller group 52 moves, a third travel switch 521 is provided on the first conveying roller group 52 and the second conveying roller group 55.

[0117] When the empty camshaft box A1 on the first conveying roller group 52 moves to the second conveying roller group 55, the third travel switch 521 on the first conveying roller group 52 is no longer triggered. At this time, the controller 9 controls the first conveying roller group 52 to convey the camshaft box A1 containing the workpiece forward. The camshaft box A1 containing the workpiece triggers the third travel switch 521 on the first conveying roller group 52 again, and the first conveying roller group 52 stops conveying, so that the first conveying roller group 52 can load materials in time.

[0118] When the empty camshaft box A1 on the first conveying roller group 52 moves to the second conveying roller group 55, the third travel switch 521 on the second conveying roller group 55 is triggered. At this time, the controller 9 controls the second conveying roller group 55 to convey the empty camshaft box A1 forward until the third travel switch 521 on the second conveying roller group 55 is no longer triggered.

[0119] It can be understood that the third travel switch 521 on the first conveying roller group 52 is arranged at the end of the first conveying roller group 52 close to the second conveying mechanism 2; the third travel switch 521 on the second conveying roller group 55 is arranged on the side of the second conveying roller group 55 close to the second conveying member mechanism, and the distance between the third travel switch 521 on the second conveying roller group 55 and the end of the second conveying roller group 55 matches the length of a camshaft box A1.

[0120] Specifically, the first clamping member 76 and the second clamping member 77 have the same structure.

[0121] Preferably, in one embodiment of the present invention, the first clamping member 76 includes a bidirectional cylinder 761 and a clamping rod 762, the bidirectional cylinder 761 is installed at the output end of the first linear actuator 74, and the clamping rod 762 is fixedly connected to the output end of the bidirectional cylinder 761. When the bidirectional cylinder 761 contracts, the two clamping rods 762 arranged opposite to each other approach each other, thereby clamping the camshaft box A1.

[0122] The first clamping member 76 can also use a structure such as the clamping claw 42, but the structure of the clamping claw 42 is complex and maintenance is relatively cumbersome, while the structure of the two-way cylinder 761 is relatively simple and easy to maintain.

[0123] Furthermore, in one embodiment of the present invention, in order to make the clamping of the camshaft box A1 more stable, the bidirectional cylinder 761 is usually a double-axis bidirectional cylinder 761, and the contact area between the clamping rod 762 and the camshaft box A1 is larger, thereby making the clamping of the camshaft box A1 more stable.

[0124] Specifically, the clamping mechanism 4 includes a manipulator 41 and a clamping claw 42, and the clamping claw 42 is installed on the manipulator 41. The clamping claw 42 includes a second mounting seat 421, a third linear driver 422, a first clamping rod 423 and a second clamping rod 424. The third linear driver 422 is installed on the second mounting seat 421, the first clamping rod 423 is fixedly connected to the second mounting seat 421, the second clamping rod 424 is relatively arranged on the side of the first clamping rod 423, there is a certain gap 425 between the first clamping rod 423 and the second clamping rod 424, and the second clamping rod 424 is fixedly connected to the output end of the third linear driver 422 and is driven by the third linear driver 422 to move up and down. The lower part of the second clamping rod 424 is provided with a slope 4241, and the slope 4241 is arranged below the first clamping rod 423. When the third linear driver 422 drives the second clamping rod 424 to rise, the slope 4241 abuts against the first clamping rod 423. When the clamping jaw 42 clamps the cylinder head, the first clamping rod 423 and the second clamping rod 424 are both inserted into the same through hole. At this time, the third linear drive 422 drives the second clamping rod 424 to rise, and the rising of the second clamping rod 424 drives the slope 4241 to rise, thereby increasing the gap 425 between the first clamping rod 423 and the second clamping rod 424, thereby clamping the cylinder head to prevent the cylinder head from slipping.

[0125] It is understandable that the slope 4241 is located in the through hole of the cylinder head or below the through hole of the cylinder head. When the slope 4241 is located in the through hole of the cylinder head, the first clamping rod 423 and the second clamping rod 424 abut against a clamping through hole, ensuring that the clamping jaws 42 can stably clamp the cylinder head. When the slope 4241 is located below the through hole of the cylinder head, the first clamping rod 423 and the second clamping rod 424 above the slope 4241 are still located in the through hole, and the cross-sectional area enclosed by the first clamping rod 423 and the second clamping rod 424 at the slope 4241 is larger than the cross-sectional area of ​​the through hole, so that the cylinder head is well clamped by the clamping jaws 42 and will not slip off.

[0126] Optionally, in an embodiment of the present invention, the first clamping rod 423 and the second clamping rod 424 may be a square rod, a round rod or other polygonal rods.

[0127] Preferably, in one embodiment of the present invention, in order to better fit the inner wall of the cylinder head through hole, the first clamping rod 423 and the second clamping rod 424 in the present invention are both semi-cylindrical rods. The side planes of the first clamping rod 423 and the second clamping rod 424 (the side of the semi-cylindrical rod includes a plane and a curved surface, and the plane part is called the side plane) are arranged oppositely, and the shape of the first clamping rod 423 and the second clamping rod 424 after being combined matches the shape of the through hole, and the contact area with the inner wall of the cylinder head through hole is larger, so that the cylinder head can be clamped more stably.

[0128] When the clamping jaw 42 moves downward to allow the first clamping rod 423 and the second clamping rod 424 to enter the cylinder head through hole, the bottom of the first clamping rod 423 and the second clamping rod 424 first contact the upper part of the cylinder head, and the bottom surfaces of the first clamping rod 423 and the second clamping rod 424 are flat. At this time, if there is a slight error in positioning, the first clamping rod 423 and the second clamping rod 424 cannot smoothly enter the cylinder head through hole during the downward movement of the clamping jaw 42.

[0129] Preferably, in one embodiment of the present invention, in order to allow the first clamping rod 423 and the second clamping rod 424 to smoothly enter the through hole, the bottom surface of the first clamping rod 423 is convex downward to form a first smooth curved surface 4231, and the first smooth curved surface 4231 is tangent to the side curved surface of the first clamping rod 423; the bottom surface of the second clamping rod 424 is convex downward to form a second smooth curved surface 4242, and the second smooth curved surface 4242 is tangent to the side curved surface of the second clamping rod 424. When there is a slight error in the positioning of the clamping jaws 42, the clamped cylinder head is squeezed and displaced, so that the first clamping rod 423 and the second clamping rod 424 are smoothly inserted into the cylinder head through hole.

[0130] It is understandable that the ramp 4241 can be set at any position of the second clamping rod 424 below the first clamping rod 423 .

[0131] Preferably, in an embodiment of the present invention, in order to facilitate the processing of the second clamping rod 424 , a slope 4241 is provided at the lower portion of the second clamping rod 424 , and the lower portion of the slope 4241 is connected to the second smooth curved surface 4242 .

[0132] Optionally, in one embodiment of the present invention, the third linear driver 422 is used to drive the first clamping rod 423 to move up and down, and the third linear driver 422 can be one of a screw, a push rod motor, a linear motor, a cylinder and a hydraulic cylinder.

[0133] Preferably, in one embodiment of the present invention, the third linear actuator 422 is a cylinder, which has a simple structure and is easy to maintain.

[0134] It can be understood that the clamping jaw 42 lifts the second clamping rod 424 when clamping the cylinder head, and pushes the second clamping rod 424 to return to its original position when clamping and placing the cylinder head.

[0135] Further, the clamping mechanism 4 also includes a sleeve 426, which is fixedly connected to the second mounting seat 421, and the output end of the third linear drive 422 is arranged in the inner cavity of the sleeve 426, the first clamping rod 423 is fixedly connected to the inner wall of the sleeve 426, the first clamping rod 423 extends downward through the sleeve 426, and the second clamping rod 424 is arranged in the inner cavity of the sleeve 426 and extends downward through the sleeve 426. The inner cavity of the sleeve 426 is provided with a first spring 4261, one end of the first spring 4261 is fixedly connected to the sleeve 426, and the other end abuts against the second clamping rod 424. When the cylinder drives the second clamping rod 424 to rise, the first spring 4261 is compressed. After the cylinder cover is placed, the second clamping rod 424 needs to be reset to separate the clamping claw 42 from the cylinder cover. The compressed spring drives the second clamping rod 424 to reset, so that the cylinder does not need to make a driving action, saving energy.

[0136] The cylinder head is usually provided with a plurality of through holes, which are generally arranged at the four corners and other positions of the cylinder head.

[0137] Preferably, in an embodiment of the present invention, the clamping jaw 42 is provided with at least two pairs of first clamping rods 423 and second clamping rods 424 to clamp the diagonal corners of the cylinder head so that the clamping is relatively stable.

[0138] More preferably, in an embodiment of the present invention, four pairs of first clamping rods 423 and second clamping rods 424 are provided, and the four pairs of first clamping rods 423 and second clamping rods 424 correspond to four corners of the cylinder head respectively, so as to stably clamp the cylinder head.

[0139] It is understandable that the manipulator 41 is usually a five-axis manipulator 41, and the multiple degrees of freedom enable the manipulator 41 to grasp the cylinder head at various positions. A sensor is provided on the manipulator 41, and the sensor is connected to the controller 9 for communication. The sensor senses the relative position of the clamping jaw 42 and the cylinder head, so that the controller 9 controls the clamping jaw 42 to accurately clamp the cylinder head.

[0140] Specifically, the wiping mechanism 8 includes a tensioning frame 81, a winding roller 82, a placing roller 83 and a motor 84. The tensioning frame 81 is used to tension the wiping paper 88, the winding roller 82 is used to wind up the wiping paper 88, and the placing roller 83 is used to place the wiping paper 88. The winding roller 82 and the placing roller 83 are both rotatably connected to the tensioning frame 81. The motor 84 is installed on the tensioning frame 81, and the motor 84 and the winding roller 82 are in transmission connection. The tensioning frame 81 tensions the wiping paper 88 connected to the winding roller 82 and the placing roller 83. Driven by the wiping paper 88 and constrained by the tensioning frame 81, the placing roller 83 and the winding roller 82 rotate synchronously. The wiping paper 88 always remains flat during the cylinder head wiping process, so that the cylinder head wiping and oil removal effect is good.

[0141] The tensioning frame 81 provided by the present invention includes a second frame 811, a first roller 812 and a first connecting block 813, a second roller 814 and a second connecting block 815. The first roller 812 is rotatably connected to the first connecting block 813, the second roller 814 is rotatably connected to the second connecting block 815, the first connecting block 813 is fixedly connected to the second frame 811, and the second connecting block 815 is fixedly connected to the second frame 811. The wiping paper 88 and the winding roller 82 are respectively arranged on both sides of the second frame 811, so that the wiping paper 88 can be flattened and tensioned in cooperation with the first roller 812 and the second roller 814 (the wiping paper 88 passes through the gap 425 between the first roller 812 and the second roller 814 from the bottom of the second roller 814, and then crosses the first roller 812 and connects with the winding roller 82), so that the cylinder head wiping efficiency is improved.

[0142] If the first connecting block 813 is fixedly connected to the second frame 811, the cylinder cover may be pressed directly onto the first roller 812 by mistake. At this time, the wiping paper 88 is pressed to produce greater friction and is prone to breakage under the pulling force of winding.

[0143] Therefore, the first connection block 813 must be slidably connected to the second frame 811 and provided with a first elastic member 816, which is installed on the second frame 811 to provide an upward force for the first connection block 813. If the cylinder cover is directly pressed down, during the deformation of the first elastic member 816, the friction force on the wipe paper 88 will not increase to the maximum, but will have a certain buffer, and the staff will have enough reaction time to lift the cylinder cover to avoid the wipe paper 88 from breaking.

[0144] It can be understood that, based on the sliding connection between the first connection block 813 and the second frame 811 , the second connection block 815 is fixedly connected or slidingly connected to the second frame 811 .

[0145] When the second connecting block 815 is fixedly connected to the second frame 811, if the first roller 812 moves downward under the pressure of the cylinder cover, the distance between the first roller 812 and the second roller 814 is reduced, while the wiping paper 88 is still the original length, and the wiping paper 88 is prone to wrinkles.

[0146] When the second connection block 815 is slidably connected to the second frame 811, the second roller 814 pulls down the wipe paper 88 by its own weight, but since the second connection block 815 has no other constraints, the sliding state of the second connection block 815 is easy to change (for example, it is easy to move upward under force and destroy the tension state of the wipe paper 88). Therefore, a second elastic member 817 is also provided, and the second elastic member 817 is installed on the second frame 811 to provide a downward force for the second connection block 815. Under the constraint of the second elastic member 817, the second roller 814 is not easy to change its position when under force, and can tension the wipe paper 88 more stably.

[0147] In summary, the tensioning frame 81 provided by the present invention includes a second frame 811, a first roller 812 and a first connecting block 813, a second roller 814 and a second connecting block 815, a first elastic member 816 and a second elastic member 817. The first roller 812 is rotatably connected to the first connecting block 813, and the first connecting block 813 is slidably connected to the second frame 811. The second roller 814 is rotatably connected to the second connecting block 815, and the second connecting block 815 is slidably connected to the second frame 811. The first elastic member 816 is installed on the second frame 811 to provide an upward force for the first connecting block 813. The second elastic member 817 is installed on the second frame 811 to provide a downward force for the second connecting block 815. The upward force provided by the first elastic member 816 is greater than the downward force provided by the second elastic member 817. When wiping is required, the wiping paper 88 is wound on the tensioning frame 81, and the wiping paper 88 is wound from the lower surface of the second roller 814 to the upper surface of the first roller 812, and the side of the released wiping paper 88 is located above the line connecting the second roller 814 and the first roller 812, and the side of the reeled wiping paper 88 is located below the first roller 812. When the staff moves the cylinder cover to the upper surface of the first roller 812 for wiping, the first roller 812 moves downward, and the upward force of the first elastic member 816 on the first connecting block 813 increases, and the first roller 812 no longer pulls the second roller 814 upward through the wiping paper 88. When the second roller 814 moves downward for a certain distance under the downward force of the second elastic member 817, the first roller 812 pulls the second roller 814 again through the wiping paper 88, so that the wiping paper 88 between the first roller 812 and the second roller 814 remains tensioned. At this time, the wiping paper 88 on the upper surface of the first roller 812 is always in a tensioned state, and the staff only needs to move the cylinder cover horizontally to quickly complete the wiping of the cylinder cover.

[0148] Specifically, in one embodiment of the present invention, the second frame 811 is provided with a first long hole 818 and a second long hole 819, and the second long hole 819 is located below the first long hole 818. The first connecting block 813 is slidably connected in the first long hole 818, and the second connecting block 815 is located in the second long hole 819.

[0149] When in use, the wiping paper 88 passes through the gap 425 between the first roller 812 and the second roller 814 from below the second roller 814, abuts against the upper surface of the first roller 812, and then is wound around the winding roller 82. The first elastic member 816 provides an upward force to the wiping paper 88, and the second elastic member 817 provides a downward force to the wiping paper 88, so that the wiping paper 88 is stretched between the first roller 812 and the second roller 814 to wipe the cylinder cover.

[0150] If the downward force provided by the second elastic member 817 is greater than the upward force of the first elastic member 816, the force of the second elastic member 817 is transmitted to the first elastic member 816 through the second roller 814, the wiping paper 88, and the first roller 812, which may cause the first elastic member 816 to be compressed downward, and the second elastic member 817 will drive the second connecting block 815 to bottom out in the second long hole 819. At this time, the first roller 812 is pulled down, and the first roller 812 and the second roller 814 are at their farthest distance. If the cylinder cover presses down on the first roller 812, the first roller 812 moves downward, so that the distance between the first roller 812 and the second roller 814 is reduced, while the length of the wiping paper 88 remains unchanged, and the wiping paper 88 is wrinkled.

[0151] Therefore, in this embodiment, the upward force provided by the first elastic member 816 is configured to be greater than or equal to the downward force provided by the second elastic member 817, thereby eliminating the adverse effect of the downward force generated by the second elastic member 817 on the first elastic member 816, and at the same time, it is also better to ensure that the first roller 812 and the second roller 814 can always tighten the wiping paper 88. In an ideal situation, the first elastic member 816 supports the first roller 812 to contact the top surface of the first long hole 818, and the second elastic member 817 supports the second roller 814 to contact the top surface of the second long hole 819, so that the wiping paper 88 can be stably tightened, while ensuring the buffering capacity of the first elastic member 816.

[0152] Optionally, in one embodiment of the present invention, the first elastic member 816 and the second elastic member 817 may be respectively disposed above the first long hole 818 and the second long hole 819. The positions of the first connecting block 813 and the second connecting block 815 determine the positions of the first roller 812 and the second roller 814. If the first elastic member 816 is disposed above the first long hole 818 and the second elastic member 817 is disposed above the second long hole 819, the second frame 811 needs to extend upward to meet the installation requirements of the first elastic member 816.

[0153] However, when the first elastic member 816 is installed above the first connecting block 813, the upper surface of the second frame 811 is higher than the upper surface of the roller. At this time, the cylinder head may hit the second frame 811 during the wiping process.

[0154] It is understandable that the upper surface of the first roller 812 should be higher than the second frame 811 or flush with the upper surface of the second frame 811 so that the cylinder head will not bump into the second frame 811 during the wiping process.

[0155] Preferably, in one embodiment of the present invention, in order to prevent the cylinder head from hitting the second frame 811, the first elastic member 816 is disposed below the first connecting block 813. In the initial state, the first elastic member 816 is in a compressed state, thereby providing an upward thrust to the first connecting block 813, so that the first connecting block 813 is located at the top of the first long hole 818.

[0156] Optionally, in one embodiment of the present invention, since the second long hole 819 is disposed below the first long hole 818 , the second elastic member 817 can be installed above or below the second connecting block 815 .

[0157] When the second elastic member 817 is installed under the second connecting block 815, the second elastic member 817 is initially in a stretched state, but the pulling force of the second elastic member 817 is smaller than the pulling force of the first elastic member 816. Therefore, when the first elastic member 816 pulls the wiping paper 88, the second connecting block 815 is pulled to the top of the inner wall of the second long hole 819.

[0158] When the first connecting block 813 moves downward, the wiping paper 88 therebetween no longer pulls the second roller 814 upward, and the second roller 814 moves downward under the pulling force of the second elastic member 817, so that the wiping paper 88 is tensioned again, thereby ensuring a good wiping effect.

[0159] When the second elastic member 817 is installed above the second connecting block 815, the second elastic member 817 is initially in a compressed state, but the thrust of the second elastic member 817 is smaller than the pulling force of the first elastic member 816. Therefore, when the first elastic member 816 pulls the wipe paper 88, the second connecting block 815 is pulled to the top of the second long hole 819.

[0160] When the first connecting block 813 moves downward, the wiping paper 88 therebetween no longer pulls the second roller 814 upward, and the second roller 814 moves downward under the thrust of the second elastic member 817, so that the wiping paper 88 is tensioned again, thereby ensuring a good wiping effect.

[0161] Optionally, in an embodiment of the present invention, the first elastic member 816 is a compression spring or a torsion spring, the second elastic member 817 can be a compression spring or a torsion spring when it is arranged above the second long hole 819, and can be a tension spring when it is arranged below the second long hole 819. If the first elastic member 816 or the second elastic member 817 is directly fixedly connected to the second frame 811, it is difficult to repair and replace.

[0162] Preferably, in one embodiment of the present invention, the first elastic member 816 includes a third mounting seat 8161, a first connecting rod 8162 and a third spring 8173, the third mounting seat 8161 is fixedly connected to the second frame 811, one end of the first connecting rod 8162 is fixedly connected to the first connecting block 813, the first connecting rod 8162 extends downward through the third mounting seat 8161, the first connecting rod 8162 and the third mounting seat 8161 are slidably connected, one end of the third spring 8173 is connected to the upper surface of the third mounting seat 8161, and the other end is connected to one end of the first connecting rod 8162.

[0163] For the convenience of replacement and maintenance, the third spring 8173 is generally in contact with the third mounting seat 8161 and the first connecting rod 8162 .

[0164] In order to facilitate the fixing of the first connecting rod 8162, a through hole is provided on the first connecting block 813, and the first connecting rod 8162 passes through the through hole, and two nuts 8168 are provided on the first connecting rod 8162, and the two nuts 8168 are respectively provided above and below the through hole, thereby fixing the first connecting rod 8162 to the first connecting block 813. The third spring 8173 abuts against the lower surface of the nut 8168 below.

[0165] It should be noted that the lower diameter of the first connecting rod 8162 (the lower diameter is larger than the rod diameter above the bottom) becomes larger to prevent the first connecting rod 8162 from slipping out of the third mounting seat 8161.

[0166] Preferably, in one embodiment of the present invention, the second elastic member 817 includes a fourth mounting seat 8171, a second connecting rod 8172 and a third spring 8173, the fourth mounting seat 8171 is fixedly connected to the second frame 811, one end of the second connecting rod 8172 is fixedly connected to the second connecting block 815, the second connecting rod 8172 extends downward through the fourth mounting seat 8171, the second connecting rod 8172 and the fourth mounting seat 8171 are slidably connected, one end of the third spring 8173 is connected to the bottom surface of the third mounting seat 8161, and the other end is connected to one end of the second connecting rod 8172.

[0167] For the convenience of replacement and maintenance, the third spring 8173 is generally in contact with the fourth mounting seat 8171 and the second connecting rod 8172 .

[0168] In order to facilitate the fixing of the second connecting rod 8172, a through hole is provided on the second connecting block 815, and the second connecting rod 8172 passes through the through hole, and two nuts 8168 are provided on the second connecting rod 8172, and the two nuts 8168 are respectively arranged above and below the through hole, thereby fixing the second connecting rod 8172 to the second connecting block 815.

[0169] It should be noted that the lower diameter of the second connecting rod 8172 is enlarged to prevent the second connecting rod 8172 from slipping out of the fourth mounting seat 8171. One end of the third spring 8173 abuts against the bottom surface of the fourth mounting seat 8171, and the other end abuts against the lower part of the second support rod.

[0170] The third mounting seat 8161 or the fourth mounting seat 8171 is fixedly connected to the second frame 811 by bolts, so installation and disassembly are convenient.

[0171] Specifically, the placing roller 83 is arranged above the line connecting the first roller 812 and the second roller 814, and the winding roller 82 is arranged below the first roller 812. The motor 84 is installed on the second frame 811, and the output end of the motor 84 is connected to the winding roller 82 by transmission. When the paper wiping 88 is connected and driven, the winding roller 82 and the placing roller 83 rotate synchronously.

[0172] It is understandable that if the reeling roller 82 is disposed above the first roller 812, the tensioning frame 81 cannot play a tensioning role. If the placing roller 83 is disposed below the line connecting the first roller 812 and the second roller 814, the tensioning frame 81 cannot play a tensioning role either.

[0173] Preferably, in one embodiment of the present invention, in order to enable the tensioning frame 81 to tension the wiping paper 88 when the winding roller 82 is in any position, a third roller 85 rotatably connected to the second frame 811 is further provided. The third roller is provided between the first roller 812 and the winding roller 82, and the third roller 85 is provided below the first roller 812. At this time, whether the winding roller 82 is provided above or below the first roller 812, the tensioning frame 81 can tension the wiping paper 88, so that the wiping effect is good.

[0174] Preferably, in an embodiment of the present invention, in order to enable the tensioning frame 81 to play the role of tensioning the wiping paper 88 when the placement roller 83 is in any position, a fourth roller 86 and a fifth roller 87 are also provided, both of which are rotatably connected to the second frame 811. The fourth roller 86 is arranged above the fifth roller 87, and a gap 425 is provided between the fourth roller 86 and the fifth roller 87.

[0175] like Figure 7-8 As shown, the fourth roller 86 is arranged beside the placement roller 83, both of which are located on the left side of the second roller 814, and the fourth roller 86 is arranged below the second roller 814. At this time, no matter whether the placement roller 83 is arranged above or below the connecting line between the second roller 814 and the first roller 812, the tensioning frame 81 can tension the wiping paper 88, so that the wiping effect is good.

[0176] If the cylinder head is directly transported on the first transport mechanism 1 , the cylinder head will be worn during the transport process, and the relative position of the cylinder head and the camshaft box A1 is difficult to fix.

[0177] Preferably, in one embodiment of the present invention, in order to avoid wear of the cylinder head and to relatively fix the position of the cylinder block and the camshaft box A1, the cylinder head and the camshaft box A1 are placed on a tray A2 for transportation.

[0178] Specifically, the first lifting mechanism 3 and the second lifting mechanism 6 have the same structure.

[0179] The first lifting mechanism 3 includes a first lifting machine 31, a first placement plate 32 and a first roller 321. The first lifting machine 31 is used to lift the first placement plate 32. The first placement plate 32 is used to place the pallet A2. Since the pallet A2 cannot directly slide onto the first placement plate 32 by inertia when the first conveying mechanism 1 conveys the pallet A2, the first roller 321 is set on the first placement plate 32. The first roller 321 is driven by a motor. When the first conveying mechanism 1 conveys the pallet A2 on which the camshaft box A1 and the cylinder head containing the workpiece are placed, the first roller 321 starts to rotate at the same time, and conveys the pallet A2 on which the camshaft box A1 and the cylinder head containing the workpiece are placed to the first placement plate 32. Similarly, the first roller 321 also conveys the pallet A2 with an empty camshaft box A1 to the first conveying mechanism 1.

[0180] The second lifting mechanism 6 includes a second lifting machine 61, a second placement plate 62 and a second roller 621. The second lifting machine 61 is used to lift the second placement plate 62. The second placement plate 62 is used to place the camshaft box A1. Since the empty camshaft box A1 cannot directly slide from the third conveying mechanism 5 to the second placement plate 62 by inertia when the third conveying mechanism 5 conveys the empty camshaft box A1 to the second lifting mechanism 6, the second roller 621 is set on the second placement plate 62. The second roller 621 is driven by a motor. When the third conveying mechanism 5 conveys the empty camshaft box A1, the second roller 621 starts to rotate at the same time to convey the empty camshaft box A1 to the second placement plate 62. Similarly, the second roller 621 also conveys the camshaft box A1 loaded with workpieces to the third conveying mechanism 5.

[0181] It can be understood that the first hoist 31 and the second hoist 61 are similar to the conveying structure of the elevator. The first hoist 31 and the second hoist 61 are prior art, so they are not described in detail here.

[0182] Preferably, in one embodiment of the present invention, in order to enable the first roller 321 to stop conveying when the tray A2 is completely located on the first placement plate 32, a first travel switch 322 is provided on the first placement plate 32. When the tray A2 is completely moved to the first placement plate 32 (when the camshaft box A1 and the cylinder head can be stably lifted), the first travel switch 322 is triggered, and then the first roller 321 stops conveying, and the controller 9 controls the first lifter 31 to lift the first placement plate 32 to the first position.

[0183] Specifically, two first travel switches 322 are provided, and the two first travel switches 322 are provided along the conveying direction of the first conveying mechanism 1. When the pallet A2 is conveyed from the first conveying mechanism 1 to the first roller conveyor 321, that is, after the pallet A2 completely leaves the first conveying mechanism 1, the two first travel switches 322 are both triggered, and the first roller conveyor 321 stops conveying. When the pallet A2 is conveyed from the first roller conveyor 321 to the first conveying mechanism 1, that is, after the pallet A2 completely leaves the first placement plate 32, the two first travel switches 322 are not triggered, and the first roller conveyor 321 stops conveying.

[0184] Preferably, in one embodiment of the present invention, in order to enable the second roller conveyor 621 to stop conveying when the camshaft box A1 is completely located on the second placement plate 62, a second travel switch 622 is provided on the second placement plate 62. When the empty camshaft box A1 is completely moved to the second placement plate 62 (when the camshaft box A1 can be stably lifted), the second travel switch 622 is triggered, and then the second roller conveyor 621 stops conveying, and the controller 9 controls the second lifter 61 to lift the second placement plate 62 to the second position.

[0185] Specifically, two second travel switches 622 are provided, and the two second travel switches 622 are provided along the conveying direction of the third conveying mechanism 5. When the empty camshaft box A1 is conveyed from the third conveying mechanism 5 to the first roller conveyor 321, that is, after the empty camshaft box A1 completely leaves the first conveying mechanism 1, the two second travel switches 622 are triggered, and the second roller conveyor 621 stops conveying. When the camshaft box A1 loaded with a workpiece is conveyed from the second roller conveyor 621 to the third conveying mechanism 5, that is, after the camshaft box A1 loaded with a workpiece completely leaves the second placement plate 62, the two second travel switches 622 are not triggered, and the second roller conveyor 621 stops conveying.

[0186] Specifically, the first conveying mechanism 1 includes a third conveying roller group 11 and a fourth conveying roller group 12 driven by a motor. The conveying directions of the third conveying roller group 11 and the fourth conveying roller group 12 are opposite. The third conveying roller group 11 and the fourth conveying roller group 12 each include at least two conveying rollers.

[0187] Optionally, in one embodiment of the present invention, since the first conveying mechanism 1 is used to cyclically convey the camshaft box A1 containing workpieces to the empty camshaft box A1 (the camshaft box A1 is placed on the tray A2), the first conveying mechanism 1 can be set to the same conveying structure as the third conveying mechanism 5, that is, the third conveying roller group 11 and the fourth conveying roller group 12 are arranged in parallel.

[0188] However, after the third conveying roller group 11 and the fourth conveying roller group 12 are arranged side by side, the camshaft box A1 loaded with the workpiece and the empty camshaft box A1 on the second placement plate 62 will be located at different positions (need to correspond to the positions of the third conveying roller group 11 and the fourth conveying roller group 12), and the time required for the cam transfer mechanism 7 to move will be longer (it saves time and is simpler to program for the cam transfer mechanism 7 to clamp and place the camshaft box A1 at the same position), and the distance between the cam transfer mechanism 7 and the first lifting mechanism 3 needs to be re-determined to adapt to the conveying speed of the second conveying mechanism 2.

[0189] Furthermore, since the camshaft box A1 is placed in the tray A2, the width of the two trays A2 will exceed the width of the opening of the first lifting mechanism 3, and a suitable lifting mechanism needs to be replaced, which is rather troublesome.

[0190] Preferably, in one embodiment of the present invention, the third conveying roller group 11 is arranged above the fourth conveying roller group 12, and the first placement plate 32 is lifted to different heights (the first lifting mechanism 3 is used to lift the tray A2 on which the camshaft box A1 containing the workpiece is placed at the third conveying roller group 11 to the first position, and the first lifting mechanism 3 is used to lower the tray A2 on which the empty camshaft box A1 is placed at the first position to the fourth conveying roller group 12), so as to realize the conveying of the tray A2. At this time, the tray A2 on which the camshaft box A1 containing the workpiece is placed and the tray A2 on which the empty camshaft box A1 is placed are located at the same position of the first placement plate 32 during the conveying, so that the conveying speed of the second conveying mechanism 2 can be adapted with a small change of the first conveying mechanism 1.

[0191] The present invention also discloses a feeding method for an engine assembly feeding production line. The feeding method for an engine assembly feeding production line is applied to the above-mentioned engine assembly feeding production line. The feeding method comprises:

[0192] Step S1): the first conveying mechanism conveys the cylinder head and the camshaft box;

[0193] Step S2): the second conveying mechanism conveys the cylinder body;

[0194] Step S3): when the cylinder head and the camshaft box containing the workpiece are transferred to the first lifting mechanism, the first lifting mechanism lifts the cylinder head and the camshaft box containing the workpiece to a first position;

[0195] Step S4): The second conveying mechanism conveys the cylinder head to the third position and takes visual photos;

[0196] Step S5): the cam transfer mechanism moves the camshaft box containing the workpiece at the first position to the second position;

[0197] Step S6): The clamping mechanism clamps the cylinder head at the first position to above the second position, takes visual photos, compares the two photo information, and after determining the position of the cylinder head, the clamping mechanism clamps the cylinder head and the cylinder body for installation.

[0198] Step S7): the second lifting mechanism lowers the camshaft box containing the workpiece to the third conveying mechanism;

[0199] Step S8): the second conveying mechanism continues to convey the installed cylinder head and cylinder body to the downstream of the second conveying mechanism;

[0200] Step S9): After the first conveying roller group conveys the camshaft box with the workpiece to the downstream of the second conveying mechanism, the workpiece is installed on the engine cylinder block, and the empty camshaft box with the workpiece removed is transferred to the second conveying roller group, and the second conveying roller group returns the empty camshaft box to the second lifting mechanism;

[0201] Step S10): the second lifting mechanism lifts the empty camshaft box to a second position;

[0202] Step S11): the cam transfer mechanism moves the empty camshaft box at the second position to the first position;

[0203] Step S12): The first lifting mechanism lowers the unloaded camshaft box to the first conveying mechanism.

[0204] The tray A2 on which the cylinder head and camshaft box A1 are placed is conveyed by the first conveying roller, so that the cylinder head and camshaft box A1 are conveyed together, reducing the use of conveying equipment. In addition, the cylinder head and camshaft box A1 are conveyed synchronously in the tray A2, and the number of cylinder heads and camshafts corresponds to the number of cylinder bodies, which facilitates the installation of the entire engine and does not cause any redundant or missing parts. The cylinder head can be automatically installed by the clamping mechanism 4. The cylinder head and cylinder body are conveyed to the downstream of the third conveying mechanism 5 after being installed on the second conveying mechanism 2 by the third conveying mechanism 5, which facilitates the staff to take the workpiece out of the camshaft box A1 and install it on the cylinder body, thereby improving the efficiency of engine assembly. The camshaft box A1 with the workpiece and the empty camshaft box A1 are moved between the first position and the second position by the camshaft transfer mechanism, so that the camshaft box A1 circulates at the third conveying mechanism 5. When the camshaft box A1 is used less, the normal production needs are met, thereby improving the utilization rate of the camshaft box A1.

[0205] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. The feeding production line for engine assembly is characterized by: include: First rack; A first conveying mechanism, for conveying the cylinder head and the camshaft box; A second conveying mechanism, used for conveying the cylinder body; A first lifting mechanism, disposed downstream of the first conveying mechanism, for lifting the cylinder head and the camshaft box with the workpiece at the first conveying mechanism to a first position, and for lowering the empty camshaft box from the first position to the first conveying mechanism; A clamping mechanism, mounted on the first frame, for clamping the cylinder head at the first position and installing it on the cylinder body; A third conveying mechanism is arranged downstream of the second conveying mechanism, the third conveying mechanism comprises a conveying frame, a first conveying roller group and a second conveying roller group driven by a motor, the first conveying roller group and the second conveying roller group each comprise at least two conveying rollers rotatably connected to the conveying frame, the first conveying roller group and the second conveying roller group are arranged in parallel and have opposite conveying directions; A second lifting mechanism, disposed upstream of the third conveying mechanism, for lifting the empty camshaft box at the third conveying mechanism to a second position, and for lowering the camshaft box loaded with workpieces from the second position to the third conveying mechanism; A camshaft transfer mechanism, mounted on the first frame, for moving the camshaft box with a workpiece from the first position to the second position, and for moving an empty camshaft box from the second position to the first position; The camshaft transfer mechanism is arranged between the first lifting mechanism and the second lifting mechanism, and the camshaft transfer mechanism comprises: a first conveying rail, mounted on the first frame; a second conveying rail, the second conveying rail being slidably connected to the first conveying rail, the second conveying rail being perpendicular to the first conveying rail; A first mounting seat, slidably connected to the second conveying rail; A first linear drive and a second linear drive, wherein the first linear drive and the second linear drive are both fixedly connected to the first mounting seat; A first clamping member and a second clamping member are respectively fixedly connected to output ends of the first linear drive and the second linear drive, and the first clamping member and the second clamping member are both used to clamp the camshaft box; The clamping mechanism comprises a manipulator and a clamping claw, wherein the clamping claw is mounted on the manipulator, and the clamping claw comprises: a second mounting base; A third linear actuator, mounted on the second mounting seat; A first clamping rod, fixedly connected to the second mounting seat; and The second clamping rod is fixedly connected to the output end of the third linear actuator. The second clamping rod is arranged beside the first clamping rod. A slope is arranged at the lower part of the second clamping rod. The slope is located below the first clamping rod, and the thickness of the slope gradually increases from top to bottom.

2. The engine assembly feeding production line according to claim 1, characterized in that: The first clamping member and the second clamping member have the same structure. The first clamping member includes a bidirectional cylinder and a clamping rod. The bidirectional cylinder is installed at the output end of the first linear actuator, and the clamping rod is fixedly connected to the output end of the bidirectional cylinder.

3. The engine assembly feeding production line according to claim 1, characterized in that: The bottom surface of the first clamping rod protrudes downward to form a first smooth curved surface, and the first smooth curved surface is tangent to the side curved surface of the first clamping rod; the bottom surface of the second clamping rod protrudes downward to form a second smooth curved surface, and the second smooth curved surface is tangent to the side curved surface of the second clamping rod; The upper portion of the slope is inclined, and the lower portion of the slope is connected to the second smooth curved surface.

4. The engine assembly feeding production line according to claim 1, characterized in that: The clamp also includes a sleeve, which is fixedly connected to the second mounting seat; the output shaft of the linear drive is arranged in the sleeve, the first clamping rod is fixedly connected to the inner wall of the sleeve, the first clamping rod passes through the sleeve and extends downward, the second clamping rod is arranged in the inner cavity of the sleeve, and the second clamping rod passes through the sleeve and extends downward; a first spring is arranged in the inner cavity of the sleeve, and one end of the first spring abuts against the second clamping rod.

5. The engine assembly feeding production line according to claim 1, characterized in that: It also includes a wiping mechanism, which is installed beside the second conveying mechanism and is used to wipe the end surface of the cylinder head. The wiping mechanism includes: A tensioning frame, used for tensioning the wipe paper; A reel roller, rotatably connected to the tensioning frame, for reeling in the wipe paper; A placement roller, rotatably connected to the tensioning frame, for placing wipe paper; The motor is installed on the tensioning frame, the motor is connected to the winding roller in a transmission manner, and the placing roller rotates synchronously with the winding roller.

6. The engine assembly feeding production line according to claim 5, characterized in that: The tensioning frame comprises: Second rack; A first roller and a first connecting block, wherein one end of the first roller is rotatably connected to the first connecting block, and the first connecting block is slidably connected to the second frame; A second roller and a second connecting block, one end of the second roller is rotatably connected to the second connecting block, the second connecting block is slidably connected to the second frame, and the second roller is located below the first roller; a first elastic member, mounted on the second frame, and configured to provide an upward force to the first connecting block; The second elastic member is installed on the second frame and is used to provide a downward force for the second connecting block. The upward force provided by the first elastic member is greater than the downward force provided by the second elastic member.

7. The engine assembly feeding production line according to claim 6, characterized in that: The wiping mechanism also includes a third roller, which is rotatably connected to the second frame, and is disposed between the first roller and the winding roller, and is located below the first roller.

8. The engine assembly feeding production line according to claim 6 or 7, characterized in that: The wiping mechanism also includes a fourth roller and a fifth roller, both of which are rotatably connected to the second frame, the fourth roller is arranged above the fifth roller, and a gap is arranged between the fourth roller and the fifth roller; the fourth roller is arranged beside the placement roller, and the fourth roller is located below the second roller.

9. The engine assembly feeding production line according to claim 1, characterized in that: The first conveying mechanism comprises a third conveying roller group and a fourth conveying roller group driven by a motor, the third conveying roller group and the fourth conveying roller group have opposite conveying directions, and the third conveying roller group and the fourth conveying roller group each comprise at least two conveying rollers.

10. The engine assembly feeding production line according to claim 9, characterized in that: The fourth conveying roller group is arranged below the third conveying roller group, the third conveying roller group is used to convey the cylinder head and the camshaft box with the workpiece, and the fourth conveying roller group is used to convey the empty camshaft box; The first lifting mechanism is used to lift the cylinder head and the camshaft box at the third conveying roller group to the first position, and the first lifting mechanism is used to lower the camshaft box at the first position to the fourth conveying roller group.

11. The engine assembly feeding production line according to claim 1, characterized in that: The first lifting mechanism includes a first lifting machine, a first placement plate and a first roller, the first lifting machine is used to lift the first placement plate, the first placement plate is used to place the cylinder head and the camshaft box, and the first roller is driven by a motor and installed on the first placement plate; A first travel switch is arranged on the upper surface of the first placement plate.

12. The engine assembly feeding production line according to claim 1, characterized in that: The second lifting mechanism includes a second lifting machine and a second placing plate, the second lifting machine is used to lift the second placing plate, the second placing plate is used to place the camshaft box, the second roller is driven by a motor and installed on the second placing plate; a second travel switch is arranged on the upper surface of the second placing plate.

13. A feeding method for an engine assembly feeding production line, the feeding method for an engine assembly feeding production line being applied to the engine assembly feeding production line according to any one of claims 1 to 10, characterized in that: The feeding method comprises: Step S1): the first conveying mechanism conveys the cylinder head and the camshaft box; Step S2): the second conveying mechanism conveys the cylinder body; Step S3): when the cylinder head and the camshaft box containing the workpiece are transferred to the first lifting mechanism, the first lifting mechanism lifts the cylinder head and the camshaft box containing the workpiece to a first position; Step S4): The second conveying mechanism conveys the cylinder head to the third position and takes visual photos; Step S5): the cam transfer mechanism moves the camshaft box containing the workpiece at the first position to the second position; Step S6): The clamping mechanism clamps the cylinder head at the first position to above the second position, takes visual photos, compares the two photo information, and after determining the position of the cylinder head, the clamping mechanism clamps the cylinder head and the cylinder body for installation. Step S7): the second lifting mechanism lowers the camshaft box containing the workpiece to the third conveying mechanism; Step S8): the second conveying mechanism continues to convey the installed cylinder head and cylinder body to the downstream of the second conveying mechanism; Step S9): After the first conveying roller group conveys the camshaft box with the workpiece to the downstream of the second conveying mechanism, the workpiece is installed on the engine cylinder block, and the empty camshaft box with the workpiece removed is transferred to the second conveying roller group, and the second conveying roller group returns the empty camshaft box to the second lifting mechanism; Step S10): the second lifting mechanism lifts the empty camshaft box to a second position; Step S11): the cam transfer mechanism moves the empty camshaft box at the second position to the first position; Step S12): The first lifting mechanism lowers the unloaded camshaft box to the first conveying mechanism.

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