CN114799712A

CN114799712A - Frame tipping arrangement and frame weldment work station

Info

Publication number: CN114799712A
Application number: CN202210431997.0A
Authority: CN
Inventors: 邱俊杰; 欧阳文志; 谢国庆; 邓建群; 刘先
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-07-29

Abstract

The invention belongs to the technical field of engineering machinery, and particularly relates to frame turnover equipment and a frame welding workstation. The frame turnover equipment comprises a turnover machine box base and a workpiece clamping tool. The box base of the tilter comprises a box and a tool mounting table, wherein an X-axis rotation driving component in transmission connection with the tool mounting table is arranged in the box to drive the tool mounting table to rotate around an X axis. The workpiece clamping tool is installed on the tool installation table and comprises an inner limiting assembly and an outer limiting assembly, the inner limiting assembly comprises an inner supporting driving mechanism and an inner supporting piece connected with the inner supporting driving mechanism, and the outer limiting assembly comprises an outer clamping driving mechanism and an outer clamping piece connected with the outer clamping driving mechanism. The inner supporting driving mechanism and the outer clamping driving mechanism are matched with each other to drive so that the inner supporting piece and the outer clamping piece are close to or far away from each other along the Y-axis direction. In the invention, the frame turnover device realizes the stable clamping of the frame type workpiece through a dual-drive mechanism.

Description

Frame tipping arrangement and frame weldment work station

Technical Field

The invention belongs to the technical field of engineering machinery, and particularly relates to frame turnover equipment and a frame welding workstation.

Background

The frame type structure is widely applied to industries such as automobiles, engineering machinery and the like, such as a structure formed by connecting a crossbeam and a crossbeam of an automobile chassis, an auxiliary frame structure adopted by engineering modified cars and the like.

In the present domestic welding production of frame type workpieces, a simple tool is mostly adopted for supporting, manual overturning and shifting are carried out through a hoisting tool, manual welding is carried out, and in the process of welding by adopting the process, the overturning angle is difficult to control and the manual strength is high. For improving automation, though some equipment that shifts that overturns in order to assist welding frame class work piece have at present, shift through the upset and can realize arbitrary angle upset equipment, shift the in-process in the upset and guarantee that frame class work piece is firmly fixed, just so can guarantee the welding effect. Therefore, how to firmly fix the frame-like workpiece on the turnover displacement equipment is a technical problem which needs to be solved urgently.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, the present invention provides a frame turnover device and a frame welding station, wherein the frame turnover device uses a dual-drive mechanism to firmly clamp a frame-like workpiece.

To achieve the above object, a first aspect of the present invention provides a frame turnover device including:

the turnover machine box base comprises a machine box and a tool mounting table, wherein an X-axis rotation driving component in transmission connection with the tool mounting table is arranged in the machine box so as to drive the tool mounting table to rotate around an X axis; and

the workpiece clamping tool is arranged on the tool mounting table and comprises an inner limiting assembly and an outer limiting assembly, the inner limiting assembly comprises an inner support driving mechanism and an inner supporting piece connected with the inner support driving mechanism, and the outer limiting assembly comprises an outer clamp driving mechanism and an outer clamping piece connected with the outer clamp driving mechanism;

the inner supporting driving mechanism and the outer clamping driving mechanism are matched with each other to drive so that the inner supporting piece and the outer clamping piece are close to or far away from each other along the Y-axis direction.

Optionally, the inner limiting assembly includes two inner supporting members arranged at intervals along the Y-axis direction, the outer limiting assembly includes two outer clamping members arranged at intervals along the Y-axis direction, the two inner supporting members are located between the two outer clamping members, the inner supporting driving mechanism drives the two inner supporting members to synchronously approach or keep away from the outer clamping member on the same side, and the outer clamping driving mechanism drives the two outer clamping members to synchronously approach or keep away from the inner supporting member on the same side.

Optionally, the inner support driving mechanism and the outer clamp driving mechanism are ball screw mechanisms, each ball screw mechanism comprises a bidirectional screw arranged along the Y-axis direction and a Y-axis driving member in transmission connection with the bidirectional screw, and a right-handed screw section and a left-handed screw section of the bidirectional screw are respectively connected with the two inner supporting members or the two outer clamping members.

Optionally, the inner strut comprises:

one end of the connecting rod seat is connected with the bidirectional screw rod in a sliding manner, and the other end of the connecting rod seat extends out of the outer clamp driving mechanism along the X-axis direction; and

one end of the inner supporting adjusting rod is connected with one end, close to the outer clamp driving mechanism, of the connecting rod seat, and the other end of the inner supporting adjusting rod extends outwards along the Y-axis direction;

the inner support adjusting rod can linearly move along the Y-axis direction relative to the connecting rod seat.

Optionally, the outer clamp comprises:

the movable mounting seat is connected with the bidirectional screw rod in a sliding manner;

the outer clamp limiting block is arranged on the movable mounting seat; and

the Z-axis limiting part is installed on the movable installation seat and comprises a Z-axis pressing and holding part located on one vertical side of the movable installation seat, and one end of the Z-axis pressing and holding part can linearly move along the Z-axis direction to stretch into the space between the outer clamping limiting block and the inner supporting adjusting rod.

Optionally, the inner limiting assembly further comprises:

the inner limiting mounting seat is mounted on the tool mounting table; and

the top support rod pieces are arranged on two end sides of the inner limiting installation seat in the Y-axis direction;

the inner support driving mechanism is installed on the inner limiting installation seat, one end of the top support rod piece is connected with the inner limiting installation seat, and the other end of the top support rod piece can linearly move along the X-axis direction to stretch into the space between the inner support piece and the outer clamping piece.

Optionally, the outer limiting assembly further comprises an outer limiting mounting seat mounted on the tool mounting table, the inner limiting mounting seat is located between the chassis and the outer limiting mounting seat, and the outer clamp driving mechanism is mounted on the outer limiting mounting seat.

The invention provides a frame welding workstation, which comprises the frame overturning device, wherein the frame overturning device is used for clamping the end part of a workpiece in the X-axis direction.

Optionally, the frame welding workstation comprises a ground rail arranged along the direction of the X axis and at least one pair of frame overturning devices arranged at intervals along the direction of the X axis, wherein at least one of the pair of frame overturning devices is connected with the ground rail in a sliding manner.

Optionally, the bottom end of the chassis is connected with the ground rail in a sliding manner, and the bottom end of the chassis is provided with an X-axis sliding driving component for driving the frame turnover device to slide along the ground rail.

In the invention, the frame overturning device is used for clamping the end part of a frame type workpiece. The inner supporting piece and the outer clamping piece are close to each other along the Y-axis direction so as to clamp the end part of the workpiece, and the inner supporting piece and the outer clamping piece are far away from each other along the Y-axis direction so as to loosen the workpiece. In the process that the workpiece clamping tool rotates around the X axis along with the tool mounting table, the workpiece clamped between the inner supporting piece and the outer clamping piece is driven to synchronously rotate along with the X axis. Therefore, the frame turnover equipment can realize turnover and displacement of the frame type workpieces. Particularly, the inner supporting piece and the outer clamping piece are respectively driven by an inner supporting driving mechanism and an outer clamping driving mechanism, and the inner supporting piece and the outer clamping piece form a clamping jaw for clamping the end part of the frame type workpiece. In other words, the two driving mechanisms are matched with each other to drive the inner supporting piece and the outer clamping piece to move so as to realize clamping, and the frame type workpiece is guaranteed to be stably clamped on the workpiece clamping tool.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of a frame welding station according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a portion of the frame turnover device of FIG. 1;

FIG. 3 is a top view of the frame turnover device of FIG. 1;

FIG. 4 is a top view of the inner stop assembly of FIG. 2;

FIG. 5 is a cross-sectional view A-A of the inner stop assembly of FIG. 4;

fig. 6 is a schematic view of the outer limiting assembly of fig. 2.

Description of reference numerals: 10. a frame turnover device; 11. a chassis; 111. an X-axis rotation driving member; 12. a tool mounting table; 13. an inner limiting component; 131. an inner support driving mechanism; 1311. a bidirectional screw rod; 1312. a Y-axis drive member; 132. an inner support member; 1321. a connecting rod seat; 1322. an inner support adjusting rod; 1323. clamping the nut; 133. an inner limiting mounting seat; 134. a shoring rod member; 14. an outer limit assembly; 141. an outer clamp drive mechanism; 1411. a bidirectional screw rod; 1412. a Y-axis drive member; 1413. a linear guide rail; 1414. a slider; 142. an outer clamp; 1421. moving the mounting seat; 1422. a limiting block is externally clamped; 1423. a Z-axis holding member; 1424. a Z-axis limiting seat; 143. an outer limit mounting seat; 20. a ground rail; 30. an X-axis slide driving part; 40. and (3) a subframe.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In embodiments of the invention, where the context requires otherwise, the use of directional terms such as "upper, lower, top and bottom" is generally intended in the orientation shown in the drawings or the positional relationship of the various components in a vertical, vertical or gravitational orientation.

In the present invention, unless otherwise stated, the terms of orientation such as "X-axis direction" are used in the longitudinal direction of the workpiece, or in other words, the longitudinal direction of the side member in the subframe 40; the "Y-axis direction" is the width direction of the workpiece, or the length direction of the cross beam in the subframe 40; the "Z-axis direction" is the height direction of the workpiece, or the height direction of the subframe 40; the Z-axis direction, the X-axis direction and the Y-axis direction are mutually vertical in pairs.

The invention will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.

Fig. 2 is a partially enlarged view of the frame turnover device of fig. 1. Figure 4 is a top view of the inner stop assembly of figure 2. Fig. 6 is a schematic view of the outer stop assembly of fig. 2. As shown in fig. 2, 4 and 6, a first aspect of the present invention provides a frame turnover device 10, where the frame turnover device 10 includes a turnover machine box base and a workpiece clamping tool.

The tilter box base comprises a box 11 and a tool mounting table 12, wherein an X-axis rotation driving component 111 in transmission connection with the tool mounting table 12 is arranged in the box 11 so as to drive the tool mounting table 12 to rotate around an X axis.

The workpiece clamping tool is arranged on the tool mounting table 12 and comprises an inner limiting assembly 13 and an outer limiting assembly 14, the inner limiting assembly 13 comprises an inner support driving mechanism 131 and an inner support member 132 connected with the inner support driving mechanism 131, and the outer limiting assembly 14 comprises an outer clamp driving mechanism 141 and an outer clamp member 142 connected with the outer clamp driving mechanism 141;

the inner support driving mechanism 131 and the outer clamp driving mechanism 141 are driven in cooperation with each other to move the inner support 132 and the outer clamp 142 toward or away from each other along the Y-axis direction.

Specifically, the frame turnover apparatus 10 is used to clamp the ends of frame-like workpieces, such as the ends of the side rails in the subframe 40. The inner support 132 and the outer clamp 142 are close to each other in the Y-axis direction to clamp an end portion of the workpiece, and the inner support 132 and the outer clamp 142 are away from each other in the Y-axis direction to release the workpiece. In the process that the workpiece clamping tool rotates around the X axis along with the tool mounting table 12, the workpiece clamped between the inner support member 132 and the outer clamping member 142 is driven to synchronously rotate along with the X axis. Therefore, the frame turnover device 10 can realize turnover and displacement of the frame type workpiece. In the present invention, the inner support member 132 and the outer clamp member 142 are driven by the inner support driving mechanism 131 and the outer clamp driving mechanism 141, respectively, and the inner support member 132 and the outer clamp member 142 form a clamping jaw for clamping an end portion of a frame-like workpiece. In other words, the two driving mechanisms are adopted to cooperate with each other to drive the inner support member 132 and the outer clamping member 142 to move so as to realize clamping, and thus, the frame-type workpiece is ensured to be stably clamped on the workpiece clamping tool.

In this embodiment, the X-axis rotation driving component 111 includes, for example, an electric motor or a hydraulic motor, and the rotation of the tool mounting table 12 around the X-axis means that the tool mounting table 12 rotates around the rotation central axis of the X-axis rotation driving component 111, and the rotation central axis of the X-axis rotation driving component 111 is the central axis of the output driving shaft.

Further, the inner limiting assembly 13 includes two inner supporting members 132 arranged at intervals along the Y-axis direction, the outer limiting assembly 14 includes two outer clamping members 142 arranged at intervals along the Y-axis direction, the inner supporting driving mechanism 131 drives the two inner supporting members 132 to synchronously approach or leave from the outer clamping member 142 on the same side, and the outer clamping driving mechanism 141 drives the two outer clamping members 142 to synchronously approach or leave from the inner supporting members 132 on the same side.

Specifically, the workpiece clamping tool comprises two clamping jaws which are arranged at intervals along the Y-axis direction and are composed of an inner supporting piece 132 and an outer clamping piece 142, and the distance between the two clamping jaws in the Y-axis direction is adjustable. In other words, two positions on the end part of the frame type workpiece can be clamped through the workpiece clamping tool, and the clamping position can be adjusted, so that the beam distance on the frame type workpiece can be controlled.

For example, as shown in fig. 2, the workpiece clamping tool clamps the end portions of two longitudinal beams arranged in parallel and at intervals in the Y-axis direction on the subframe 40, and the distance between the inner side walls of the two longitudinal beams, that is, the inner support distance, can be controlled by controlling the distance between the two inner support members 132 through the inner support driving mechanism 131; the distance between the outer side walls of the two longitudinal beams, namely the outer clamp distance, can be adjusted by controlling the distance between the two outer clamp pieces 142 through the outer clamp driving mechanism 141; the length of the cross beam welded between the two longitudinal beams can be controlled by adjusting the inner support distance, the outer clamping distance can be further adjusted to control the longitudinal beams with different widths in a clamping mode, and therefore the workpiece clamping tool can be suitable for the auxiliary frames 40 of different models, and the frame turnover equipment 10 is made to have better universality by the aid of the arrangement.

Of course, it can be understood by those skilled in the art that, in order to achieve synchronous approaching or separating of the inner support member 132 and the outer clamping member 142 of the two clamping jaws, i.e. synchronous clamping or unclamping of the two clamping jaws, the inner support driving mechanism 131 and the outer clamping driving mechanism 141 include, for example, a rail slide mechanism, a ball screw mechanism, an electric push rod combination mechanism, a cylinder combination mechanism, etc. For example, the inner support driving mechanism 131 includes two electric push rods arranged along the Y-axis direction, and the two electric push rods are respectively connected to the two inner supporting members 132, so as to drive the inner supporting members 132, and similarly, the outer clamp driving mechanism 141 may also adopt an electric push rod combination mechanism.

Preferably, the inner support driving mechanism 131 and the outer clamp driving mechanism 141 are each a ball screw mechanism, the ball screw mechanism includes

bidirectional screws

1311, 1411 arranged along the Y-axis direction and Y-

axis driving members

1312, 1412 drivingly connected to the

bidirectional screws

1311, 1411, and right-handed screw segments and left-handed screw segments of the

bidirectional screws

1311, 1411 are respectively connected to the two inner supports 132 or the two outer clamps 142.

As shown in fig. 4 to 6, in the present embodiment, the two inner supporting members 132 and the two outer clamping members 142 are each driven to move by a ball screw mechanism, that is, the two inner supporting members 132 are driven by a ball screw mechanism, and the two outer clamping members 142 are driven by a ball screw mechanism, wherein the ball screw mechanism employs a bidirectional screw. Compared with the technical scheme that each inner support piece 132 or each outer clamping piece 142 needs to correspond to one driving mechanism, the ball screw mechanism adopting the bidirectional screw can enable the structure of the workpiece clamping tool to be more compact, and the cost is lower.

It should be noted that the inner support member 132 is mounted on the bidirectional screw 1311, and the outer clamping member 142 is mounted on the bidirectional screw 1411. The two-

way screws

1311, 1411 include a right-handed screw segment and a left-handed screw segment, and during the rotation of the two-

way screws

1311, 1411 driven by the Y-

axis driving members

1312, 1412, the two members mounted on the right-handed screw segment and the left-handed screw segment respectively move toward or away from each other, i.e., the inner support member 132 and the outer clip member 142 move toward or away from each other. Specifically, the ball screw mechanism adopting the bidirectional screw can realize synchronous clamping or loosening of the two clamping jaws.

In the present embodiment, the Y-

axis driving members

1312 and 1412 include, for example, an electric motor, a hydraulic motor, and the like, and preferably a hydraulic motor.

Further, the inner support 132 includes a connecting rod seat 1321 and an inner support adjustment rod 1322. One end of the connecting rod seat 1321 is slidably connected to the bidirectional screw 1311, and the other end extends in the X-axis direction toward the outer clamp driving mechanism 141. One end of the inner support adjusting rod 1322 is connected to one end of the connecting rod seat 1321 near the outer clamp driving mechanism 141, and the other end extends outward along the Y-axis direction. The inner support adjustment rod 1322 is linearly movable in the Y-axis direction with respect to the connection rod seat 1321.

Specifically, the inner support 132 is composed of two rods, wherein the rod slidably connected to the bidirectional screw 1311 is a connecting rod seat 1321, and the other rod is an inner support adjusting rod 1322 and is used for abutting against a frame-like workpiece for fixing. The connecting rod seat 1321 moves on the bidirectional screw 1311 to drive the inner support adjusting rod 1322 to move, so that the inner support adjusting rod 1322 abuts against or is far away from the workpiece. In particular, the inner support adjusting rod 1322 can linearly move along the Y-axis direction with respect to the connecting rod seat 1321, so that the inner support distance can be finely adjusted, and the workpiece can be firmly pressed.

As shown in fig. 4, in the embodiment shown in fig. 4, the connecting rod seat 1321 is in threaded connection with the inner support adjusting rod 1322, wherein two clamping nuts 1323 are disposed on the inner support adjusting rod 1322, an end portion of the connecting rod seat 1321 is located between the two clamping nuts 1323, and the inner support adjusting rod 1322 can be linearly moved along the Y-axis direction relative to the connecting rod seat 1321 by rotating the two clamping nuts 1323, so as to achieve the purpose of fine-tuning the inner support distance. Of course, the embodiment for linearly moving the inner support adjustment rod 1322 along the Y-axis direction is not limited to the embodiment shown in the above-mentioned figures, for example, a hoop capable of adjusting the tightness is provided at the end of the connection rod seat 1321, the inner support adjustment rod 1322 is inserted into the hoop, the inner support adjustment rod 1322 can be moved along the Y-axis direction by adjusting the hoop, and the inner support adjustment rod 1322 can be fixed by adjusting the hoop.

Further, the outer clip 142 includes a movable mounting seat 1421, an outer clip limiting block 1422, and a Z-axis limiting member. The movable mounting seat 1421 is connected with the bidirectional screw 1411 in a sliding manner. Outer clamp stopper 1422 is mounted on movable mount 1421. The Z-axis limiting member is mounted on the movable mounting seat 1421 and includes a Z-axis pressing member 1423 located on one vertical side of the movable mounting seat 1421, and one end of the Z-axis pressing member 1423 can linearly move along the Z-axis direction to extend between the outer clamp limiting member 1422 and the inner support adjusting rod 1322.

Specifically, the outer clamp limiting block 1422 and the Z-axis limiting block are both mounted on the movable mounting seat 1421. The movable mounting seat 1421 moves on the bidirectional screw 1411, so as to drive the outer clamp limiting block 1422 and the Z-axis limiting block to move, and the end of the frame-like workpiece is clamped between the outer clamp limiting block 1422 and the inner support adjusting rod 1322. Particularly, the Z-axis limiting member includes a Z-axis pressing member 1423, and one end of the Z-axis pressing member 1423 can move toward the workpiece clamped between the outer clamping limiting member 1422 and the inner support adjusting rod 1322 to press the workpiece, so as to achieve the effect of limiting in the Z-axis direction.

As shown in fig. 6, in the embodiment shown in fig. 6, the Z-axis limiting member further includes a Z-axis limiting seat 1424, the Z-axis limiting seat 1424 includes a vertical post rod and a horizontal diagonal rod, the vertical post rod is connected to the movable mounting seat 1421 at one end, the horizontal diagonal rod extends from the other end of the vertical post rod in a horizontal direction and extends inwards in an inclined manner, and the Z-axis pressing member 1423 is mounted on the horizontal diagonal rod.

In the present embodiment, the Z-axis pressing member 1423 includes, for example, an oil cylinder, an electric push rod, and an air cylinder, and the Z-axis pressing member 1423 is only required to be capable of pressing and connecting the workpiece along the Z-axis. Preferably, the Z-axis pressing member 1423 is a cylinder.

As shown in fig. 3 and 4, in the present invention, the inner limiting assembly 13 further includes an inner limiting mounting seat 133 and a top brace 134. The inner limit mounting seat 133 is mounted on the tool mounting table 12. The top stay bars 134 are attached to both ends of the inner limit attachment base 133 in the Y-axis direction. The inner support driving mechanism 131 is mounted on the inner limiting mounting seat 133, one end of the top support rod 134 is connected to the inner limiting mounting seat 133, and the other end of the top support rod can linearly move along the X-axis direction to extend between the inner support member 132 and the outer clamping member 142.

Specifically, the end of the frame-like workpiece is clamped between the inner supporting member 132 and the outer clamping member 142, and one end of the top supporting rod 134 can linearly move along the X-axis direction to extend into the space between the inner supporting member 132 and the outer clamping member 142, so as to support the frame-like workpiece to achieve the X-axis limiting effect.

It should be noted that, in this embodiment, the top brace member 134 includes, for example, an oil cylinder, an electric push rod, an air cylinder, and the like, and it is sufficient to ensure that the top brace member 134 can press-contact the workpiece along the X axis. Preferably, the top brace member 134 is a cylinder.

It should be noted that after the outer clamp limiting block 1422 and the inner support adjusting rod 1322 clamp the end of the frame-like workpiece, the workpiece can be stably clamped only by ensuring that the clamping force of the outer clamp limiting block 1422 and the inner support adjusting rod 1322 acting on the workpiece is large enough, and of course, the outer clamp limiting block 1422 and the inner support adjusting rod 1322 can limit the Y axis of the workpiece. In a preferred embodiment, a top brace 134 and a Z-axis pressing component 1423 are provided to further limit the position in the X-axis direction and the Z-axis direction, so as to ensure that the workpiece is stably clamped.

Further, the outer limiting assembly 14 further includes an outer limiting mounting seat 143 mounted on the tool mounting table 12, the inner limiting mounting seat 133 is located between the chassis 11 and the outer limiting mounting seat 143, and the outer clamp driving mechanism 141 is mounted on the outer limiting mounting seat 143.

Specifically, the inner limiting assembly 13 and the outer limiting assembly 14 are respectively provided with an inner limiting mounting seat 133 and an outer limiting mounting seat 143 to connect the tool mounting table 12. Since the frame-like workpiece is disposed to extend in the X-axis direction when being clamped on the frame turnover device 10, specifically, to extend in the direction away from the cabinet 11, the inner limit mounting seat 133 is preferably disposed between the cabinet 11 and the outer limit mounting seat 143, so as to reduce the interference risk when clamping the frame-like workpiece.

It should be noted that, in the embodiment of the present invention, the inner support driving mechanism 131 and the outer clamp driving mechanism 141 further include a rail slider mechanism, and specifically, the rail slider mechanisms are respectively disposed between the inner limiting mounting seat 133 and the inner supporting member 132 and between the outer limiting mounting seat 143 and the outer clamp member 142, so as to ensure stability of the inner supporting member 132 and the outer clamp member 142 in the moving process, and ensure structural stability of the inner support driving mechanism 131 and the outer clamp driving mechanism 141.

As shown in fig. 6, in the embodiment shown in fig. 6, two linear guide rails 1413 are respectively disposed on two sides of a Y-axis center line of the bidirectional screw 1411, the two linear guide rails 1413 are arranged in parallel at intervals along the X-direction and are mounted on the outer limiting mounting seat 143, and a slider 1414 slidably connected with the linear guide rails 1413 is disposed on the movable mounting seat 1421. It will be appreciated by those skilled in the art that a rail slider mechanism (not shown) may be similarly provided between the connecting rod seat 1321 and the inner limit mount 133, and will not be described in detail herein.

In the above-described embodiment, the "inside-outside" relationship of each component on the workpiece holding jig is determined based on the center of the workpiece holding jig.

Fig. 1 is a schematic view of a frame welding station according to an embodiment of the present invention. As shown in fig. 1, a second aspect of the present invention provides a frame welding station including the above-described frame turnover device 10, the frame turnover device 10 being configured to hold an X-axis direction end of a workpiece. Obviously, the frame welding station has all the advantages brought by the frame turning device 10 described above, and will not be described in detail herein.

In addition, it should be noted that the frame welding station includes other equipment that interacts with the frame turnover device 10. As will be appreciated by those skilled in the art, to improve the automation level and further reduce the labor intensity, the frame welding station may further include an automated welding device (e.g., a multi-degree-of-freedom robot welding device) to weld the frame-like workpieces clamped on the frame turnover device 10, so as to achieve unmanned operation.

Further, the frame welding workstation comprises a ground rail 20 arranged along the direction of the X axis and at least one pair of frame overturning devices 10 arranged at intervals along the direction of the X axis, wherein at least one of the pair of frame overturning devices 10 is connected with the ground rail 20 in a sliding way.

Specifically, the frame welding workstation comprises at least one pair of frame turnover devices 10, the pair of frame turnover devices 10 can be clamped at two ends of the frame type workpiece in the X direction respectively, one of the pair of frame turnover devices 10 can move along the X-axis direction, so that the distance between the pair of frame turnover devices 10 is adjusted, the frame welding workstation is suitable for frame type workpieces with different lengths in the X-axis direction, and the frame welding workstation is more flexible.

As shown in fig. 1, in the embodiment shown in fig. 1, a pair of frame turning devices 10 are slidably connected to the ground rail 20, the pair of frame turning devices 10 are respectively clamped at two ends of a longitudinal beam of the subframe 40, and the subframe 40 with longitudinal beams of different lengths can be applied by moving the frame turning devices 10.

It should be noted that, in some embodiments of the present invention, the frame turnover device 10 further includes a top brace bar 134 and a Z-axis pressing component 1423, and the top brace bar 134 and the Z-axis pressing component 1423 achieve the position limitation in the X-axis direction and the Z-axis direction, so as to ensure that the frame-like workpiece is further stably clamped and has good repeated positioning accuracy. Particularly, the repeated welding precision of the mechanical arm is guaranteed under the condition that automatic production is achieved by matching with the mechanical arm.

Of course, in some embodiments of the present invention, the workpiece clamping tool of the frame turnover device 10 employs a ball screw mechanism with a bidirectional screw to make the structure more compact and occupy less space. Particularly, under the condition that automatic production is realized by matching with the mechanical arm, the risk of interference between the mechanical arm and a workpiece clamping tool is reduced, so that the mechanical arm has a larger welding operation space.

Further, the bottom end of the chassis 11 is slidably connected to the ground rail 20, and the bottom end of the chassis 11 is provided with an X-axis sliding driving component 30 for driving the frame turnover device 10 to slide along the ground rail 20.

Specifically, the frame turnover device 10 is driven to move linearly in the X-axis direction by the X-axis slide driving unit 30. In the embodiment shown in fig. 1, the X-axis sliding driving component 30 is preferably a motor and is in transmission connection with a gear box, and the ground rail 20 is a rack, in other words, a rack and pinion mechanism is adopted to drive the frame turnover device 10 to move. Of course, it is understood that the linear movement of the frame turnover device 10 along the X-axis direction is not limited to the rack-and-pinion mechanism, but also includes, for example, a rail-and-slide mechanism, which is not exemplified herein.

In summary, the present invention is directed to a frame turnover device 10 and a frame welding workstation, where the frame turnover device 10 can ensure stable clamping of a workpiece, and has a compact structure, good versatility, and good clamping and repeated positioning precision, so that in a frame welding workstation combined by the frame turnover device 10 and an automated welding device, the automated welding device can be ensured to have good repeated welding precision and welding operation space.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.

It should be noted that, in the foregoing embodiments, various features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in further detail in the embodiments of the present invention.

In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.

Claims

1. Frame turnover device, characterized in that said frame turnover device (10) comprises:

the turnover machine box base comprises a machine box (11) and a tool mounting table (12), wherein an X-axis rotation driving component (111) in transmission connection with the tool mounting table (12) is arranged in the machine box (11) so as to drive the tool mounting table (12) to rotate around an X axis; and

the workpiece clamping tool is arranged on the tool mounting table (12) and comprises an inner limiting assembly (13) and an outer limiting assembly (14), the inner limiting assembly (13) comprises an inner supporting driving mechanism (131) and an inner supporting piece (132) connected with the inner supporting driving mechanism (131), and the outer limiting assembly (14) comprises an outer clamping driving mechanism (141) and an outer clamping piece (142) connected with the outer clamping driving mechanism (141);

the inner support driving mechanism (131) and the outer clamp driving mechanism (141) are matched with each other to drive so that the inner support (132) and the outer clamp (142) can move close to or away from each other along the Y-axis direction.

2. The frame turnover device according to claim 1, wherein the inner limiting assembly (13) includes two inner supporting members (132) spaced along the Y-axis direction, the outer limiting assembly (14) includes two outer clamping members (142) spaced along the Y-axis direction, the two inner supporting members (132) are located between the two outer clamping members (142), the inner supporting driving mechanism (131) drives the two inner supporting members (132) to synchronously approach or separate from the outer clamping members (142) on the same side, and the outer clamping driving mechanism (141) drives the two outer clamping members (142) to synchronously approach or separate from the inner supporting members (132) on the same side.

3. The frame turnover device according to claim 2, wherein the inner support driving mechanism (131) and the outer clamp driving mechanism (141) are ball screw mechanisms, each ball screw mechanism comprises a bidirectional screw (1311, 1411) arranged along the Y-axis direction and a Y-axis driving member (1312, 1412) in transmission connection with the bidirectional screw (1311, 1411), and the right-handed screw segment and the left-handed screw segment of the bidirectional screw (1311, 1411) are respectively connected with the two inner supports (132) or the two outer clamps (142).

4. The frame turnover device of claim 3, wherein the inner strut (132) includes:

one end of the connecting rod seat (1321) is connected with the bidirectional screw rod (1311) in a sliding mode, and the other end of the connecting rod seat extends towards the outer clamp driving mechanism (141) along the X-axis direction; and

one end of the inner support adjusting rod (1322) is connected with one end, close to the outer clamp driving mechanism (141), of the connecting rod seat (1321), and the other end of the inner support adjusting rod extends outwards along the Y-axis direction;

wherein the inner support adjustment rod (1322) is linearly movable in the Y-axis direction with respect to the connection rod seat (1321).

5. The frame turning apparatus of claim 4, wherein the outer clip (142) comprises:

the movable mounting seat (1421) is connected with the bidirectional screw rod (1411) in a sliding manner;

the outer clamp limiting block (1422) is mounted on the movable mounting seat (1421); and

the Z-axis limiting part is installed on the movable installation seat (1421) and comprises a Z-axis pressing component (1423) located on one vertical side of the movable installation seat (1421), and one end of the Z-axis pressing component (1423) can linearly move along the Z-axis direction to extend into a position between the outer clamping limiting block (1422) and the inner support adjusting rod (1322).

6. A frame overturning device according to any one of claims 1 to 5, wherein said internal limiting assembly (13) further comprises:

the inner limiting mounting seat (133) is mounted on the tool mounting table (12); and

the top bracing rod pieces (134) are arranged on two end sides of the inner limiting installation seat (133) in the Y-axis direction;

the inner support driving mechanism (131) is mounted on the inner limiting mounting seat (133), one end of the top support rod piece (134) is connected with the inner limiting mounting seat (133), and the other end of the top support rod piece can linearly move along the X-axis direction to extend into a position between the inner support piece (132) and the outer clamping piece (142).

7. The frame turnover device of claim 6, wherein the outer limiting assembly (14) further includes an outer limiting mounting seat (143) mounted on the tooling mounting table (12), the inner limiting mounting seat (133) is located between the chassis (11) and the outer limiting mounting seat (143), and the outer clamp driving mechanism (141) is mounted on the outer limiting mounting seat (143).

8. Frame welding station, characterized in that it comprises a frame turning device (10) according to any one of claims 1 to 7, said frame turning device (10) being intended to clamp the ends of a work piece in the X-axis direction.

9. Frame welding station according to claim 8, characterized in that it comprises a ground rail (20) arranged in the direction of the X-axis and at least one pair of said frame turning devices (10) arranged at intervals in the X-direction, at least one of said pair of frame turning devices (10) being slidably connected with said ground rail (20).

10. The frame welding work station according to claim 9, characterized in that the bottom end of the chassis (11) is slidably connected with the ground rail (20), and the bottom end of the chassis (11) is provided with an X-axis sliding driving component (30) for driving the frame turnover device (10) to slide along the ground rail (20).