Jacking and positioning device for heavy tool

Abstract

The invention relates to a jacking and positioning device for a heavy tool. The jacking and positioning device comprises a conveying frame, a positioning frame and a jacking mechanism. The two sets of positioning frames are arranged on the two sides of the conveying frame respectively, and positioning taper pins which are located above the stations and correspond to positioning holes in the heavy tool are arranged on the positioning frames. The jacking mechanism is arranged below the station and comprises a jacking frame and a jacking plate. The jacking frame comprises a set of first jacking frames arranged on one side of the conveying frame and a second jacking frame arranged on the other side of the conveying frame, a driving telescopic piece is arranged between every two adjacent first jacking frames, and a transmission shaft is arranged between every two adjacent first jacking frames and the second jacking frame. The jacking plate is arranged on the jacking frame, and a plurality of universal bearings are arranged on the jacking plate. The jacking mechanism is arranged to drive the jacking frames to synchronously jack the heavy tool by driving the telescopic part to horizontally stretch out and draw back in cooperation with the transmission shaft and drive the heavy tool to horizontally move and adjust through the universal bearing so that the positioning taper pin can slide into the positioning hole to be positioned.

Description

Technical Field

[0001] The invention relates to the technical field of automobile manufacturing, and in particular to a lifting and positioning device for heavy tooling. Background Art

[0002] In the modern automobile manufacturing process, laser welding technology is widely used in the welding production of car doors, car bodies and other parts. The assembly line laser welding equipment is an automated production method that fixes the workpiece in a specific position and uses laser welding. In order to ensure the precise welding quality during the welding process, the workpiece needs to be accurately positioned in the assembly line.

[0003] However, the existing assembly line laser welding equipment often faces the problem of insufficient tooling positioning accuracy when handling heavy tooling. Especially in the lifting and positioning link, the traditional positioning method cannot meet the high-precision requirements of heavy tooling, resulting in the tooling being unable to accurately enter the welding position, which in turn affects the welding quality and production efficiency. In addition, the existing lifting and positioning devices are usually only suitable for lighter tooling (less than 200 kg). For heavy tooling weighing more than 1 ton, the positioning accuracy and stability of the traditional devices are insufficient. Summary of the invention

[0004] The purpose of the present invention is to provide a lifting and positioning device for heavy-duty tooling, which can drive multiple lifting frames to synchronously lift heavy-duty tooling by driving the telescopic parts to extend horizontally and cooperate with the transmission shaft, and make the tooling translate and adjust through the universal bearing, ensuring that the positioning cone pin on the positioning frame slides into the positioning hole of the heavy-duty tooling and fully engages with it to achieve precise positioning.

[0005] In order to achieve the above object, the present invention provides a lifting and positioning device for heavy tooling, comprising:

[0006] Conveyor rack, used to move heavy tooling to designated workstations;

[0007] Two groups of positioning frames are respectively arranged on both sides of the conveying frame, and one group of positioning frames includes at least two positioning frames, and the positioning frames are provided with positioning cone pins located above the workstation and corresponding to the positioning holes on the heavy tooling;

[0008] A lifting mechanism is arranged below the workstation, and the lifting mechanism comprises:

[0009] A lifting frame, wherein the lifting frame comprises a group of at least two first lifting frames arranged on one side of the conveying frame and at least two second lifting frames arranged on the other side of the conveying frame, a driving telescopic member is arranged between two adjacent first lifting frames, and a transmission shaft is arranged between two adjacent first lifting frames and the second lifting frames;

[0010] A lifting plate is arranged on the lifting frame, and a plurality of universal bearings are arranged on the lifting plate;

[0011] The lifting mechanism is configured to drive the plurality of lifting frames to synchronously lift the heavy tooling through the horizontal extension of the driving telescopic member in cooperation with the transmission shaft, and to drive the heavy tooling to translate and adjust through the universal bearing so that the positioning cone pin slides into the corresponding positioning hole for positioning.

[0012] Optionally, the jacking frame comprises:

[0013] Fixed frame;

[0014] A first connecting member is rotatably disposed in the fixing frame, and one end of the first connecting member is rotatably connected to the fixing frame;

[0015] A second connecting member, one end of which is hingedly connected to the other end of the first connecting member, and the other end of the second connecting member is connected to the lifting plate.

[0016] Optionally, the other ends of the first connecting members of two adjacent first lifting frames are hingedly connected to the corresponding driving telescopic members.

[0017] Optionally, a rotating shaft is provided at the other end of the first connection, an avoidance installation groove is opened on the second connection member, and a connecting piece is provided at the end of the driving telescopic member, and the connecting piece is sleeved on the rotating shaft and clamped in the avoidance installation groove.

[0018] Optionally, two ends of the transmission shaft between two adjacent first lifting frames and the second lifting frames are respectively fixedly connected to one ends of two corresponding first connecting members.

[0019] Optionally, a single jacking frame has at least two first connecting members.

[0020] Optionally, the driving telescopic member is a hydraulic cylinder.

[0021] Optionally, the positioning hole is a tapered hole.

[0022] Optionally, at least one group of transmission rollers is provided on the conveying frame, and the transmission rollers are used to cooperate with the conveying frame to drive the heavy tooling to move to a designated workstation.

[0023] The beneficial effects of the present invention are as follows: by driving the telescopic parts to telescope horizontally and cooperating with the transmission shaft to drive multiple lifting frames to synchronously lift heavy tooling, and by means of universal bearings, the tooling is translated and adjusted, ensuring that the positioning cone pins on the positioning frames slide into the positioning holes of the heavy tooling and fully engage with them, thereby achieving precise positioning.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a lifting and positioning device for heavy tooling according to an embodiment of the present invention;

[0026] Figure 2 A schematic structural diagram of a lifting mechanism of a lifting and positioning device for heavy tooling shown in one embodiment of the present invention;

[0027] Figure 3 A schematic structural diagram of a lifting mechanism of a lifting and positioning device for heavy tooling before lifting, shown in one embodiment of the present invention;

[0028] Figure 4 It is a schematic structural diagram of a lifting mechanism of a lifting and positioning device for heavy tooling after lifting, shown in one embodiment of the present invention;

[0029] Figure 5 This is a schematic structural diagram of a transmission shaft of a lifting and positioning device for heavy tooling shown in one embodiment of the present invention;

[0030] In the figure: 1, conveying frame; 2, positioning frame; 21, positioning cone pin; 3, lifting mechanism; 31, lifting frame; 311, fixing frame; 312, first connecting member; 313, second connecting member; 314, rotating shaft; 315, avoidance installation groove; 32, lifting plate; 321, universal bearing; 33, first lifting frame; 34, second lifting frame, 35, driving telescopic member; 351, connecting piece; 36, transmission shaft; 4, transmission roller. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] See also Figure 1 and Figure 2 A lifting and positioning device for heavy tooling shown in a preferred embodiment of the present application includes a conveyor frame 1, a positioning frame 2 and a lifting mechanism 3. The conveyor frame 1 is used to drive the heavy tooling to move to a designated workstation. Two groups of positioning frames 2 are respectively arranged on both sides of the conveyor frame 1, and one group of positioning frames 2 includes at least two positioning frames 2. The positioning frames 2 are provided with positioning cone pins 21 located above the workstation and corresponding to the positioning holes on the heavy tooling. The lifting mechanism 3 is arranged below the workstation, and the lifting mechanism 3 includes a lifting frame 31 and a lifting plate 32. The lifting frame 31 includes a group of at least two first lifting frames 33 arranged on one side of the conveyor frame 1 and at least two second lifting frames 34 arranged on the other side of the conveyor frame 1, a driving telescopic member 35 is arranged between two adjacent first lifting frames 33, and a transmission shaft 36 is arranged between two adjacent first lifting frames 33 and second lifting frames 34. The lifting plate 32 is arranged on the lifting frame 31, and a plurality of universal bearings 321 are arranged on the lifting plate 32. The lifting mechanism 3 is configured to drive the telescopic member 35 to extend horizontally and cooperate with the transmission shaft 36 to drive multiple lifting frames 31 to synchronously lift the heavy tooling and drive the heavy tooling to translate and adjust through the universal bearing 321 so that the positioning cone pin 21 slides into the corresponding positioning hole for positioning.

[0035] According to the solution of the embodiment of the present invention, by driving the telescopic member 35 to telescope horizontally and cooperating with the transmission shaft 36, multiple lifting frames 31 are driven to synchronously lift the heavy tooling, and the tooling is adjusted by translation through the universal bearing 321, ensuring that the positioning cone pin 21 on the positioning frame 2 slides into the positioning hole of the heavy tooling and fully engages with it, thereby achieving precise positioning. It should be noted that after the heavy tooling arrives at the work station, multiple lifting frames 31 synchronously lift the heavy tooling, so that the positioning cone pin 21 begins to position the hole. Due to the position deviation, the positioning cone pin 21 will force the positioning hole to move toward its center, thereby driving the heavy tooling to synchronously cooperate with the movement and adjustment of the position under the action of the universal bearing 321, until the positioning cone pin 21 extends into the positioning hole and fully engages with it, thereby achieving precise positioning.

[0036] The following is a detailed description with specific embodiments:

[0037] See also Figures 3 to 5 The lifting frame 31 includes a fixed frame 311, a first connecting member 312 and a second connecting member 313. The first connecting member 312 is rotatably arranged in the fixed frame 311, and one end of the first connecting member 312 is rotatably connected to the fixed frame 311. One end of the second connecting member 313 is hingedly connected to the other end of the first connecting member 312, and the other end of the second connecting member 313 is connected to the lifting plate 32. The other ends of the first connecting members 312 of two adjacent first lifting frames 33 are hingedly connected to the corresponding driving telescopic member 35. The two ends of the transmission shaft 36 between the two adjacent first lifting frames 33 and the second lifting frames 34 are respectively fixedly connected to one end of the corresponding two first connecting members 312. Specifically, the other end of the first connection is provided with a rotating shaft 314, the second connecting member 313 is provided with an avoidance installation groove 315, and the end of the driving telescopic member 35 is provided with a connecting piece 351, which is sleeved on the rotating shaft 314 and clamped in the avoidance installation groove 315.

[0038] In this example, see Figure 1 A set of lifting frames 31 includes two first lifting frames 33 and two second lifting frames 34, corresponding to four positioning frames 2. Figure 3 and Figure 4 When heavy tooling needs to be lifted, the driving telescopic member 35 is extended horizontally to drive the first connecting members 312 of the two first lifting frames 33 at both ends to rotate, thereby raising the height of the second connecting member 313 and the lifting plate 32. At the same time, the first connecting member 312 of the second lifting frame 34 is connected to the first connecting member 312 of the first lifting frame 33 through a power transmission shaft. When the first connecting member 312 of the first lifting frame 33 rotates, the first connecting member 312 of the second lifting frame 34 rotates accordingly, thereby realizing the synchronous lifting of heavy tooling by the four lifting frames 31. Specifically, the driving telescopic member 35 is a hydraulic cylinder.

[0039] The single lifting frame 31 has at least two first connecting members 312. Figures 2 to 4 The transmission shaft 36, in this example, a single lifting frame 31 has two first connecting members 312 and two corresponding second connecting members 313. The two second connecting members 313 support the lifting plate 32, so that the lifting plate 32 can be lifted horizontally, and the lifting process is smoother.

[0040] The positioning hole is a tapered hole, which can better guide the positioning cone pin 21. Even if there is a position deviation, after the universal bearing 321 drives the heavy tooling to translate and adjust, the positioning cone pin 21 can slide into the positioning hole for precise positioning.

[0041] See also Figure 1 At least one set of transmission rollers 4 is provided on the conveying frame 1, and the transmission rollers 4 are used to cooperate with the conveying frame 1 to drive the heavy tooling to move to the designated workstation.

[0042] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A lifting and positioning device for heavy tooling, characterized in that: include: Conveyor rack, used to move heavy tooling to designated workstations; Two groups of positioning frames are respectively arranged on both sides of the conveying frame, and one group of positioning frames includes at least two positioning frames, and the positioning frames are provided with positioning cone pins located above the workstation and corresponding to the positioning holes on the heavy tooling; A lifting mechanism is arranged below the workstation, and the lifting mechanism comprises: A lifting frame, wherein the lifting frame comprises a group of at least two first lifting frames arranged on one side of the conveying frame and at least two second lifting frames arranged on the other side of the conveying frame, a driving telescopic member is arranged between two adjacent first lifting frames, and a transmission shaft is arranged between two adjacent first lifting frames and the second lifting frames; A lifting plate is arranged on the lifting frame, and a plurality of universal bearings are arranged on the lifting plate; The lifting mechanism is configured to drive the plurality of lifting frames to synchronously lift the heavy tooling through the horizontal extension of the driving telescopic member in cooperation with the transmission shaft, and to drive the heavy tooling to translate and adjust through the universal bearing so that the positioning cone pin slides into the corresponding positioning hole for positioning.

2. The lifting and positioning device for heavy tooling according to claim 1, characterized in that: The jacking frame comprises: Fixed frame; A first connecting member is rotatably disposed in the fixing frame, and one end of the first connecting member is rotatably connected to the fixing frame; A second connecting member, one end of which is hingedly connected to the other end of the first connecting member, and the other end of the second connecting member is connected to the lifting plate.

3. The lifting and positioning device for heavy tooling according to claim 2, characterized in that: The other ends of the first connecting members of two adjacent first lifting frames are hingedly connected to the corresponding driving telescopic members.

4. The lifting and positioning device for heavy tooling according to claim 3, characterized in that: The other end of the first connection is provided with a rotating shaft, the second connection member is provided with an avoidance installation groove, and the end of the driving telescopic member is provided with a connecting piece, which is sleeved on the rotating shaft and clamped in the avoidance installation groove.

5. The lifting and positioning device for heavy tooling according to claim 4, characterized in that: Two ends of the transmission shaft between two adjacent first lifting frames and the second lifting frames are respectively fixedly connected to one ends of two corresponding first connecting members.

6. The lifting and positioning device for heavy tooling according to claim 5, characterized in that: A single jacking frame has at least two first connecting members.

7. The lifting and positioning device for heavy tooling according to claim 1, characterized in that: The driving telescopic member is a hydraulic cylinder.

8. The lifting and positioning device for heavy tooling according to claim 1, characterized in that: The positioning hole is a tapered hole.

9. The lifting and positioning device for heavy tooling according to claim 1, characterized in that: At least one group of transmission rollers is arranged on the conveying frame, and the transmission rollers are used to cooperate with the conveying frame to drive the heavy tooling to move to a designated work station.

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