Heavy transfer equipment of flexible processing production line

Abstract

The invention discloses heavy transferring equipment for a flexible processing production line. The heavy transferring equipment comprises a walking mechanism, a transferring platform and a load driving mechanism, the transfer platform and the sliding table are both driven by a servo motor and a speed reducer, gear and rack transmission is adopted, backlash is adjustable, transmission precision is high, accurate parking at any position can be achieved, the sliding table can be in butt joint with equipment on the stations on the two sides after stretching out, two-way accurate telescopic movement of the sliding table is achieved, and the telescopic distance is accurate and adjustable. The requirement for the precision of the installation position of equipment on a butt joint station is lowered, and precise positioning transmission of loads in two directions is achieved. When the sliding table stretches out in place, the sliding table can be in lap joint with the butt joint station, the stress form of the sliding table is converted from a cantilever beam structure to a simply supported beam structure, and the bearing capacity is greatly enhanced. After the sliding table is in butt joint with butt joint station equipment, a chain drives a load to complete transfer, and the cantilever load of the sliding table is reduced. Only when a load is transferred, the sliding table needs to stretch out to be in butt joint with equipment, and the sliding table is in a retracted state in other states, so that interference with other equipment can be avoided.

Description

Technical Field

[0001] The present invention relates to the field of machinery, in particular to the fields of engineering machinery, coal machinery, rail transportation and other fields with large structural parts welding and machining processes, and in particular to a heavy-duty transfer device for a flexible processing production line. Background Art

[0002] In the prior art, heavy-duty mobile equipment for flexible processing production lines mainly includes three types: stackers, RGV shuttles, and mold-changing trolleys. Stackers are widely used in three-dimensional warehousing, and their basic structure is a lifting and translation platform and a telescopic fork. The RGV shuttle is composed of two sets of independent RGV trolleys. Usually, the mother trolley is used for long-distance lateral movement, and the child trolley is used for short-distance longitudinal movement. RGV tracks usually use welded steel structures and linear guides. The mold-changing trolley is mainly used for rapid switching of molds in the stamping and casting fields. There is a detachable or movable transition bridge between the trolley and the equipment. There is an automatic conveying device on the trolley, which can transfer the mold back and forth between the trolley and the equipment. The mold-changing trolley has a large load and can realize automatic replacement of 30-50t molds.

[0003] The existing technical solutions have the following defects: the stacker has a small load and low positioning accuracy; the stacker uses a telescopic fork structure at the end, and its load is usually limited to 8 tons; the telescopic fork is chain-driven, with low transmission accuracy, and the load is at the end of the telescopic fork during the telescopic process. In addition, the cantilever load is large, the elastic deformation of the telescopic fork is large, and the positioning accuracy is low; under the same load, the cost is higher than other types of equipment. Both the mother car and the child car need tracks to ensure their accessibility, and the tracks are immovable. If the processing equipment on the production line is a gantry machine tool or other worktable horizontal moving equipment, or a boring and milling machine or other worktable rotating equipment, the child car track of the RGV shuttle car is easy to interfere with the machine tool worktable or machine tool protective device, resulting in limited application. Summary of the invention

[0004] The object of the present invention is to provide a heavy-duty transfer equipment for a flexible processing production line. The heavy-duty transfer equipment for a flexible processing production line is to solve the technical problems in the prior art that the stacker of the heavy-duty mobile equipment has a small load, low positioning accuracy, and the sub-vehicle track of the RGV shuttle car is easy to interfere with the machine tool workbench or the machine tool protection device.

[0005] A heavy-duty transfer device for a flexible processing production line of the present invention comprises a walking mechanism, wherein the walking mechanism comprises two track beams arranged in parallel and at intervals, each of the two track beams is provided with a first linear guide rail, one of the track beams is provided with a first rack, a transfer platform is connected to the first linear guide rail via a slider, the transfer platform and the track beam form a sliding pair parallel to the length direction of the first linear guide rail, a first servo motor and a first reducer are provided in the transfer platform, an output shaft of the first servo motor is connected to an input shaft of the first reducer, the output shaft of the reducer is connected to a first gear, and the first gear is meshed with the first rack;

[0006] The transfer platform is provided with two parallel second linear guides and a second rack, the second linear guide is perpendicular to the first linear guide, the second rack is parallel to the second linear guide, the second linear guide is connected with a slide table through a slider, the slide table and the transfer platform form a sliding pair parallel to the length direction of the second linear guide, the slide table is provided with a second servo motor and a second reducer, the output shaft of the second servo motor is connected to the input shaft of the second reducer, the output shaft of the second reducer is connected to a second gear, and the second gear is meshed with the second rack;

[0007] The slide is provided with a load driving mechanism, which includes two sprockets and a driving motor. The two sprockets are arranged on the slide at intervals along the length direction of the second linear guide rail. The output shaft of the driving motor is connected to the sprockets. A chain is connected between the two sprockets. The chain is connected to a traction hook. At least two sliding rollers and at least two guide rollers are arranged on both sides of the chain on the slide at intervals along the length direction of the second linear guide rail. The guide rollers are located on both sides of the sliding rollers.

[0008] Furthermore, a side top device is arranged on the outer side of the track beam, and the side top device includes a fixing seat, on which a screw is passed, and the tail end of the screw is in contact with the outer side surface of the track beam.

[0009] Furthermore, the first linear guide is a roller type linear guide.

[0010] Furthermore, the transfer platform includes a steel structure frame formed by welding rectangular tubes and steel plates.

[0011] Furthermore, a docking mechanism is provided between the sliding roller and the guide roller at one end of the slide.

[0012] Compared with the prior art, the present invention has a positive and obvious effect. The transfer platform and the slide are driven by a servo motor and a reducer, and adopt a gear rack transmission, with adjustable tooth gap and high transmission accuracy, which can realize accurate parking at any position. After the slide is extended, it can dock with the equipment on the two sides of the station to realize the two-way accurate telescopic movement of the slide. The telescopic distance is accurately adjustable, which reduces the installation position accuracy requirements of the equipment on the docking station, and realizes the accurate positioning and transmission of the load in two directions. It has strong compatibility and is convenient for the later expansion of the production line. When the slide is extended to the right position, it can be overlapped with the docking station. The force form of the slide is converted from a cantilever beam to a simply supported beam structure, and the bearing capacity is greatly enhanced. After the slide is docked with the docking station equipment, the chain drives the load to complete the transfer, which reduces the cantilever load of the slide, is conducive to simplifying the structure, and improves the transfer capacity. The slide adopts a chain to drive the load, and the load positioning and moving distance are determined by the sprocket center distance, which is independent of the drive motor, reducing the control difficulty. The slide is only required to extend and dock with the equipment when transferring the load. In other states, the slide is in a retracted state to avoid interference with other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a first stereoscopic schematic diagram of a heavy-duty transfer device of a flexible processing production line of the present invention.

[0014] Figure 2 It is a second stereoscopic schematic diagram of a heavy-duty transfer device of a flexible processing production line of the present invention.

[0015] Figure 3 It is a schematic diagram of a slide and a load driving mechanism in a heavy-duty transfer device of a flexible processing production line of the present invention.

[0016] Figure 4 It is a side view schematic diagram of a heavy-duty transfer device of a flexible processing production line of the present invention.

[0017] Figure 5 The present invention is a schematic diagram of the use process of a heavy-duty transfer device of a flexible processing production line. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment, and any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of description and is not a limitation of the technical solution of the present invention.

[0019] like Figure 1-Figure 5As shown, a heavy-duty transfer device of a flexible processing production line of the present invention comprises a walking mechanism 1, wherein the walking mechanism 1 comprises two track beams 11 arranged in parallel and at intervals, each of the two track beams 11 is provided with a first linear guide rail 12, one of the track beams 11 is provided with a first rack 13, a transfer platform 2 is connected to the first linear guide rail 12 via a slider, the transfer platform 2 and the track beam 11 form a sliding pair parallel to the length direction of the first linear guide rail 12, a first servo motor 21 and a first reducer 22 are provided in the transfer platform 2, the output shaft of the first servo motor 21 is connected to the input shaft of the first reducer 22, the output shaft of the reducer is connected with a first gear, and the first gear is meshed with the first rack 13;

[0020] The transfer platform 2 is provided with two parallel second linear guides 212 and a second rack 210, the second linear guide 212 is perpendicular to the first linear guide 12, the second rack 210 is parallel to the second linear guide 212, the second linear guide 212 is connected with a slide 213 via a slider, the slide 213 and the transfer platform 2 form a sliding pair parallel to the length direction of the second linear guide 212, the slide 213 is provided with a second servo motor 211 and a second reducer, the output shaft of the second servo motor 211 is connected to the input shaft of the second reducer, the output shaft of the second reducer is connected with a second gear, and the second gear is meshed with the second rack 210;

[0021] The slide 213 is provided with a load driving mechanism, which includes two sprockets 214 and a driving motor 29. The two sprockets 214 are arranged on the slide 213 at intervals along the length direction of the second linear guide 212. The output shaft of the driving motor 29 is connected to the sprockets 214. A chain 24 is connected between the two sprockets 214. The chain 24 is connected to a traction hook 27. On the slide 213, at least two sliding rollers 26 and at least two guide rollers 25 are arranged on both sides of the chain 24 at intervals along the length direction of the second linear guide 212. The guide rollers 25 are located on both sides of the sliding roller 26.

[0022] Furthermore, a side top device 14 is provided on the outer side of the track beam 11 . The side top device 14 includes a fixing seat. A screw is passed through the fixing seat. The tail end of the screw is in contact with the outer side surface of the track beam 11 .

[0023] Furthermore, the first linear guide rail 12 is a roller type linear guide rail.

[0024] Furthermore, the transfer platform 2 includes a steel structure frame 23 formed by welding rectangular tubes and steel plates.

[0025] Furthermore, a docking mechanism 28 is provided between the sliding roller 26 and the guide roller 25 at one end of the slide 213 .

[0026] Specifically, the track beam 11 is fixed to the ground via anchor bolts 15 .

[0027] Specifically, the linear guide, servo motor, reducer, gear, rack, chain 24, sprocket 214, traction hook 27, roller linear guide, docking mechanism 28, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.

[0028] like Figure 5 As shown in the figure, from top to bottom, there are seven transfer process states of the workpiece. The specific process of transferring the load from the storage location 3 to the equipment workbench 4 is as follows:

[0029] 1. Initial state: the tray 5 (including the load) is in the storage position 3. The first servo motor 21 drives the transfer platform 2 along the first linear guide rail 12 through the first gear and the first rack 13 to reach the docking station on one side of the storage position 3.

[0030] 2. The second servo motor 211 drives the slide 213 to extend to the right along the second linear guide rail 212 through the second gear and the second rack 210. The slide 213 docks with the storage position 3, and the traction hook 27 is connected to the tray 5.

[0031] 3. The driving motor 29 drives the tray 5 to be transferred to the slide 213 through the sprocket 214, the chain 24 and the traction hook 27.

[0032] 4. The second servo motor 211 drives the slide 213 to move leftward and reset through the second gear and the second rack 210.

[0033] 5. The second servo motor 211 drives the slide 213 to extend to the left in the opposite direction and dock with the docking station of the equipment workbench 4.

[0034] 6. The driving motor 29 drives the tray 5 to be transferred to the equipment workbench 4 through the sprocket 214, the chain 24 and the traction hook 27.

[0035] 7. The second servo motor 211 drives the slide 213 to reset to the right through the second gear and the second rack 210.

[0036] Advantages of the present invention:

[0037] 1. The transfer platform 2 and the slide 213 are driven by a servo motor and a reducer, and adopt gear rack transmission. The tooth gap is adjustable and the transmission accuracy is high, which can achieve accurate parking at any position. After the slide 213 is extended, it can dock with the equipment on the two sides of the station to achieve bidirectional precise telescopic movement of the slide 213. The telescopic distance is precisely adjustable, which reduces the installation position accuracy requirements of the equipment on the docking station, and realizes the precise positioning and transmission of the load in two directions. It has strong compatibility and is convenient for the later expansion of the production line.

[0038] 2. When the slide 213 is extended to the right position, it can overlap with the docking station. The force form of the slide 213 is transformed from a cantilever beam to a simply supported beam structure, and the load-bearing capacity is greatly enhanced. After the slide 213 is docked with the docking station equipment, the chain 24 drives the load to complete the transfer, which reduces the cantilever load of the slide 213, helps to simplify the structure and improve the transfer capacity. The slide 213 uses the chain 24 to drive the load. The load positioning and moving distance are determined by the center distance of the sprocket 214, which is independent of the drive motor 29, reducing the control difficulty.

[0039] 3. The slide 213 is extended to dock with the equipment only when the load is being transported. In other states, the slide 213 is retracted to avoid interference with other equipment.

[0040] 4. The guide roller 25 and the sliding roller 26 are used to carry and guide the load, thereby improving the load-bearing capacity and guiding effect.

[0041] 5. The side top device 14 can ensure the straightness of the track beam 11.

[0042] 6. The first linear guide 12 is a roller type linear guide with strong load-bearing capacity and high precision.

[0043] 7. The transfer platform 2 is made of rectangular tubes and steel plates welded together, with high strength and good rigidity, which can effectively carry large workpieces.

Claims

1. A heavy-duty transfer device for a flexible processing production line, including a walking mechanism, characterized in that: The walking mechanism includes two track beams arranged in parallel and at intervals, each of the two track beams is provided with a first linear guide rail, one of the track beams is provided with a first rack, the first linear guide rail is connected to a transfer platform via a slider, the transfer platform and the track beam form a sliding pair parallel to the length direction of the first linear guide rail, the transfer platform is provided with a first servo motor and a first reducer, the output shaft of the first servo motor is connected to the input shaft of the first reducer, the output shaft of the reducer is connected to a first gear, and the first gear is meshed with the first rack; The transfer platform is provided with two parallel second linear guides and a second rack, the second linear guide is perpendicular to the first linear guide, the second rack is parallel to the second linear guide, the second linear guide is connected with a slide table through a slider, the slide table and the transfer platform form a sliding pair parallel to the length direction of the second linear guide, the slide table is provided with a second servo motor and a second reducer, the output shaft of the second servo motor is connected to the input shaft of the second reducer, the output shaft of the second reducer is connected to a second gear, and the second gear is meshed with the second rack; The slide is provided with a load driving mechanism, which includes two sprockets and a driving motor. The two sprockets are arranged on the slide at intervals along the length direction of the second linear guide rail. The output shaft of the driving motor is connected to the sprockets. A chain is connected between the two sprockets. The chain is connected to a traction hook. At least two sliding rollers and at least two guide rollers are arranged on both sides of the chain on the slide at intervals along the length direction of the second linear guide rail. The guide rollers are located on both sides of the sliding rollers.

2. The heavy-duty transfer equipment for a flexible processing production line according to claim 1 is characterized in that: A side top device is arranged on the outer side of the track beam. The side top device comprises a fixing seat. A screw is passed through the fixing seat. The tail end of the screw contacts the outer side surface of the track beam.

3. The heavy-duty transfer equipment for a flexible processing production line according to claim 1 is characterized in that: The first linear guide is a roller type linear guide.

4. The heavy-duty transfer equipment for a flexible processing production line according to claim 1 is characterized in that: The transfer platform comprises a steel structure frame formed by welding rectangular tubes and steel plates.

5. The heavy-duty transfer equipment for a flexible processing production line according to claim 1 is characterized in that: A docking mechanism is arranged between the sliding roller and the guide roller at one end of the slide table.

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