Workpiece transfer trolley with automatic turnover positioning stop block

Abstract

The utility model discloses a workpiece transfer trolley with an automatic turnover positioning stop block. The workpiece transfer trolley comprises a hydraulic turnover oil cylinder, a frame and a tray bracket, the material tray bracket comprises a turning plate, two roller supports symmetrically installed on the left side and the right side of the turning plate, and a turning positioning device installed on the outer sides of the roller supports and used for limiting the position of the material tray. Wheels are arranged at the bottom of the frame, a hydraulic turnover oil cylinder is hinged to the frame through an oil cylinder connecting seat, an oil cylinder piston rod extends upwards to be hinged to an oil cylinder hinge seat through a connector, the oil cylinder hinge seat is fixed to the middle of the bottom face of a turnover plate, and the front side of the turnover plate is hinged to the frame through a left hinge and a right hinge. According to a quenching or normalizing station, the tray can be positioned at different positions and in different directions.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a workpiece transfer vehicle with an automatic flip positioning block. Background Art

[0002] The push rod furnace production line is mainly used for quenching and normalizing of parts. The tray workpiece discharged from the furnace body needs to be quickly transferred to the quenching tank or normalizing tank for quenching and normalizing. Therefore, a workpiece transfer vehicle is developed, which can automatically transfer the tray workpiece after the material is discharged, and can automatically pour the material for quenching or normalizing after the transfer. After pouring, the tray is restored to its original position and then transferred to the next return station, so that the return mechanism automatically returns the empty tray to the original feed furnace port for loading and waiting, which is of great significance to improving the working efficiency of the push rod furnace production line.

[0003] The applicant has developed a workpiece transfer vehicle (CN219408069U) for a push rod furnace production line, including a conveying device and a mobile trolley, wherein the conveying device includes a bottom frame, a track beam, a driving sprocket, a driven sprocket, a chain, and a reduction motor; the mobile trolley includes a frame, wheels, a tray bracket, and a hydraulic cylinder; the front end of the bottom of the tray bracket is hinged to the frame, the middle part is hinged to the piston rod of the hydraulic cylinder, the frame is fixedly connected to the chain, and is driven by the chain to move left and right on the track beam. This patent can realize the automatic transfer of workpieces, but the workpiece transfer vehicle has the following technical problems during use: in order to prevent the tray from slipping when flipping, a stopper is set at one end of the flap. Since the stopper is fixed on the flap, the mobile trolley can only feed from one end and discharge from the other end, which limits the feeding and discharging positions of the mobile trolley and is inconvenient to use. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a workpiece transfer vehicle with an automatic flip positioning block.

[0005] The technical solution adopted by the utility model is:

[0006] A workpiece transfer vehicle with an automatic flipping positioning block comprises a hydraulic flipping cylinder, a frame and a tray bracket; the tray bracket comprises a flap, two roller brackets symmetrically installed on the left and right sides of the flap, and a flipping positioning device installed on the outside of the roller brackets for limiting the position of the tray; wheels are provided at the bottom of the frame, the hydraulic flipping cylinder is hinged to the frame through a cylinder connecting seat, the cylinder piston rod extends upward and is hinged to the cylinder articulated seat through a joint, the cylinder articulated seat is fixed to the middle part of the bottom surface of the flap, and the front side of the flap is hinged to the frame through two left and right hinges.

[0007] Furthermore, there are two flip positioning devices, which are symmetrically installed on the outsides of the two roller brackets, so that the force is evenly applied and the flip is smooth.

[0008] Furthermore, the flipping and positioning device includes a swivel arm, a swivel arm seat, a pin shaft, a connecting rod and a positioning hydraulic cylinder; the cylinder body of the positioning hydraulic cylinder is hinged to the rear end of the flap, the cylinder piston rod extends forward and is hinged to one end of the connecting rod, the pin shaft passes through the other end of the connecting rod and one end of the swivel arm and can be rotatably arranged in the swivel arm seat, and the other end of the swivel arm is provided with a blocking surface for blocking the empty material tray.

[0009] The positioning is driven by hydraulic cylinders, which ensures accurate positioning under high temperature and heavy load conditions, and stable and reliable operation. The arm linkage mechanism has a simple structure and high reliability.

[0010] Furthermore, the rotating arm is L-shaped, one end of the L-shape is provided with a blocking surface for blocking the empty material tray, and the other end of the L-shape is connected to the pin shaft. The structure is simple and the reliability is high.

[0011] Furthermore, the positioning hydraulic oil cylinder is hinged to the flap through the oil cylinder mounting plate, making disassembly and assembly convenient.

[0012] Furthermore, the oil cylinder piston rod is hinged to the connecting rod through an oil cylinder joint, making disassembly and assembly convenient.

[0013] Beneficial effects of the utility model:

[0014] 1. Flexible structure, can realize the positioning of the tray in different positions and directions according to the quenching or normalizing station.

[0015] 2. Both flipping and positioning are driven by hydraulic pressure, which ensures accurate positioning under high temperature and heavy load, and stable and reliable operation.

[0016] 3. Combined with program control, it can realize multi-station automatic control, with wide practicability, low cost and adaptability to different process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a workpiece transfer vehicle with an automatic flip positioning block for this application.

[0018] Figure 2 for Figure 1 Side view of.

[0019] Figure 3 for Figure 1 Top view of the .

[0020] Figure 4 This is a structural diagram of the flipping and positioning device of the workpiece transfer vehicle. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and a preferred implementation manner.

[0022] See also Figure 1-Figure 4The present application provides a workpiece transfer vehicle with an automatic flip positioning block, which is arranged on a conveying device 10 as described in patent CN219408069U and is driven by a chain to move left and right on a track beam 12.

[0023] The workpiece transfer vehicle comprises a hydraulic tilting cylinder 5, a vehicle frame 16 and a tray bracket.

[0024] The tray bracket includes a flap 9, on the upper side of which two roller brackets 13 are symmetrically mounted on the left and right sides, and a row of rollers 14 are mounted on the roller brackets for free rotation via a rotating shaft. The bottom front side of the flap 9 is hinged to the vehicle frame 16 via two left and right hinges 10. A cylinder hinge seat 12 is welded at the bottom center of the flap 16. Two flip positioning devices 15 are symmetrically mounted on the outer sides of the two roller brackets 13.

[0025] See also Figure 4 The flip positioning device 15 includes a rotating arm 151, a rotating arm seat 152, a connecting rod 153, a positioning hydraulic oil cylinder 155, a cylinder joint 156 and a cylinder mounting plate 157. The cylinder mounting plate 157 is fixed to the rear end of the flap 9, the cylinder seat of the positioning hydraulic oil cylinder 155 is hinged to the cylinder mounting plate 157, the cylinder piston rod extends forward horizontally to connect the cylinder joint 156, the cylinder joint 156 is hinged to one end of the connecting rod 153, the other end of the connecting rod 153 is fixedly sleeved on the pin, the pin is rotatably arranged in the rotating arm seat 152, and one end of the rotating arm 151 is also fixedly sleeved on the pin.

[0026] The rotating arm 151 is L-shaped, one end of the L-shape is provided with a blocking surface for blocking an empty tray, and the other end of the L-shape is connected to a pin. When the tray is loaded, the oil cylinder piston rod retracts, and the connecting rod 153 drives the rotating arm 151 to flip downward 90° and fall into the roller bracket 13, so that the tray can be loaded and unloaded in two directions; when the tray is unloaded, the oil cylinder piston rod extends, and the connecting rod 153 drives the rotating arm 151 to flip upward 90°, and the blocking surface of the rotating arm 151 flips to a vertical position. When the workpiece on the tray is dumped into the quenching tank or the normalizing tank, the empty tray is blocked by the rotating arm 151, so that the tray can be unloaded in two directions.

[0027] The frame 16 includes a rectangular frame made of square steel, and mounting plates are arranged at the four corners of the bottom surface of the rectangular frame. An axle seat 1 is installed on each mounting plate, and a wheel 2 is arranged on each axle seat. The wheel 2 is adapted to the two track beams 16 of the conveying device 10 of patent CN219408069U. Chain connecting plates are also installed between the two front mounting plates and the two rear mounting plates respectively, which are used to connect the chains. A flat plate is welded to the middle part of the bottom surface of the rectangular frame, and a through hole is arranged in the center of the flat plate to avoid the piston rod. Two pairs of ear plates are welded below the flat plate, and pin holes are arranged on the ear plates. The flat plate and the ear plates constitute the oil cylinder connecting seat 8. The top surface of the rectangular frame is connected to a fixed frame for supporting the tray bracket.

[0028] The cylinder body of the hydraulic tilting cylinder 5 is hinged to the cylinder connecting seat 8 through the cylinder mounting flange 7, and the cylinder connecting seat 8 is fixed on the fixing frame of the vehicle frame 16; the cylinder piston rod extends upward and is hinged to the cylinder articulated seat 12 through the joint 6.

[0029] The working principle of the utility model is:

[0030] When the furnace is unloading, the chain drives the workpiece transfer vehicle to move to the furnace mouth. When it is necessary to feed from the end with the rotating arm 151, the cylinder piston rod of the positioning hydraulic cylinder 155 retracts, and the connecting rod 153 drives the rotating arm 151 to turn downward 90° and fall into the roller bracket 13. The puller pushes and pulls the unloaded tray workpiece onto the tray bracket of the workpiece transfer vehicle.

[0031] When the chain drives the workpiece transfer vehicle to move to the quenching tank or normalizing tank position to prepare for unloading, the cylinder piston rod of the positioning hydraulic cylinder 155 extends, and the connecting rod 153 drives the rotating arm 151 to flip upward 90°, and the blocking surface of the rotating arm 151 flips to a vertical position; the piston rod of the hydraulic flipping cylinder 5 extends to push the flap to flip around the hinge 10, and the workpiece on the tray is flipped into the quenching tank or normalizing tank, the empty tray is blocked by the rotating arm 151, and the cylinder piston rod of the positioning hydraulic cylinder 155 retracts, and the flap drives the empty tray to return to its original position.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications are also within the protection scope of the present invention.

Claims

1. A workpiece transfer vehicle with an automatic flip positioning block, characterized in that: The invention comprises a hydraulic tilting cylinder (5), a frame (16) and a tray bracket; the tray bracket comprises a flap (9), two roller brackets (13) symmetrically mounted on the left and right sides of the flap, and a tilting positioning device (15) mounted on the outside of the roller brackets (13) and used to limit the position of the tray; a wheel (2) is arranged at the bottom of the frame (16); the hydraulic tilting cylinder (5) is hinged to the frame (16) through a cylinder connecting seat (8); the cylinder piston rod extends upward and is hinged to the cylinder hinge seat (12) through a joint (6); the cylinder hinge seat (12) is fixed to the middle part of the bottom surface of the flap (9); and the front side of the flap (9) is hinged to the frame (16) through two left and right hinges (10).

2. A workpiece transfer vehicle with an automatic flip positioning block according to claim 1, characterized in that: There are two flip positioning devices (15) which are symmetrically mounted on the outsides of the two roller brackets (13).

3. A workpiece transfer vehicle with an automatic flip positioning block according to claim 1 or 2, characterized in that: The flip positioning device (15) comprises a rotating arm (151), a rotating arm seat (152), a pin shaft, a connecting rod (153) and a positioning hydraulic oil cylinder (155); the cylinder body of the positioning hydraulic oil cylinder (155) is hinged to the rear end of the flap (9); the cylinder piston rod extends forward and is hinged to one end of the connecting rod (153); the pin shaft passes through the other end of the connecting rod (153) and one end of the rotating arm (151) and is rotatably arranged in the rotating arm seat (152); and the other end of the rotating arm (151) is provided with a blocking surface for blocking an empty material tray.

4. A workpiece transfer vehicle with an automatic flip positioning block according to claim 3, characterized in that: The rotating arm (151) is L-shaped, one end of the L-shape is provided with a blocking surface for blocking an empty material tray, and the other end of the L-shape is connected to a pin shaft.

5. A workpiece transfer vehicle with an automatic flip positioning block according to claim 3, characterized in that: The positioning hydraulic oil cylinder (155) is hinged to the flap (9) via an oil cylinder mounting plate (157).

6. A workpiece transfer vehicle with an automatic flip positioning block according to claim 3, characterized in that: The oil cylinder piston rod is hinged to the connecting rod (153) via an oil cylinder joint (156).

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