WO2020244127A1

WO2020244127A1 - Welding device for aluminum energy absorption box

Info

Publication number: WO2020244127A1
Application number: PCT/CN2019/112830
Authority: WO
Inventors: 李长伟; 徐楠华; 王小满
Original assignee: 南京英尼格玛工业自动化技术有限公司
Priority date: 2019-06-03
Filing date: 2019-10-23
Publication date: 2020-12-10
Also published as: CN113966260A; CN113966260B; CN110181214A

Abstract

Disclosed is a welding device for an aluminum energy absorption box. The welding device comprises a bottom plate (1), wherein two energy absorption box fixing bases (2) are arranged on the bottom plate (1), a stand column (3) is arranged between the two energy absorption box fixing bases (2), an upper end of the stand column (3) is connected to a middle guide rail integration mechanism, two ends of the middle guide rail integration mechanism are respectively connected to a first cylinder (4), the bottom of the first cylinder (4) is connected to an energy absorption box pressing mechanism, and the bottom of the middle guide rail integration mechanism is connected to a second cylinder (5) by means of a floating connection mechanism (10); the middle part of the stand column (3) is connected with an energy absorption box body positioning device (6) by means of a connection arm, and the energy absorption box fixing bases (2) are arranged below the energy absorption box body positioning device (6); and a guide rail pressing mechanism in the vertical direction is additionally arranged in the middle of the positions where a left energy absorption box and a right energy absorption box are placed, such that the structure is compact, a sufficient welding space is reserved, and welding of a left side and a right side can be completed in one step, thereby avoiding the phenomenon of the welding seam quality being inadequate due to multiple instances of welding and multiple instances of arc starting and arc extinguishing in traditional welding.

Description

Welding device of aluminum energy absorption box

Technical field

The invention relates to the technical field of welding devices, in particular to a welding device of an aluminum energy absorption box.

Background technique

With the advent of the Industry 4.0 era, the automotive industry has also ushered in a new round of development. Based on environmental and intelligent manufacturing and innovation considerations, car safety, energy saving, environmental protection, etc. have also been paid more and more attention. Among them, the lightweight of automobiles is a hot spot in the new energy automobile industry, and the density of aluminum alloy is very low, and the same volume , The weight is relatively light, but the strength is high or even super-high certain high-quality steel, so aluminum alloy is the preferred material for lightweight cars. However, traditional aluminum alloy welding is very easy to oxidize, and the welding quality is difficult to control.

The existing aluminum energy-absorbing box welding device has a small welding space, cannot enter the gun, or even cannot be welded, and the entire device uses a hydraulic buffer mechanism alone during operation, which has poor buffering effect and cannot completely avoid hard contact and welding. The quality needs to be improved.

technical problem

The purpose of the present invention is to overcome the shortcomings in the prior art and provide a welding device for an aluminum energy absorbing box with a large welding space and a smooth device use process.

Technical solutions

To solve the above technical problems, the technical solutions adopted by the present invention are as follows:

A welding device for an aluminum energy absorbing box, comprising a bottom plate. Two energy absorbing box fixing seats are arranged on the bottom plate. A column is arranged between the two energy absorbing box fixing seats. The upper end of the column is connected with a middle A guide rail integration mechanism, the two ends of the middle guide rail integration mechanism are respectively connected with cylinder one, the bottom of the cylinder one is connected with an energy-absorbing box pressing mechanism, and the bottom of the middle guide rail integration mechanism is connected with the cylinder two through a floating connection mechanism , The second cylinder is set through the bottom plate;

An energy absorbing box box body positioning device is connected to the middle of the column through a connecting arm, and an energy absorbing box bottom plate fixing seat is arranged under the energy absorbing box box body positioning device.

Further, the intermediate guide rail integration mechanism includes a flying-wing mounting seat and a sliding table mechanism, the sliding table mechanism includes a linear guide rail mechanism, and a linear guide rail connecting plate is connected to the linear guide rail mechanism, and the linear guide rail connecting plate passes The connecting piece is connected with the mounting base, and the connecting piece of the linear guide rail connecting plate is connected with the second cylinder through a floating connecting mechanism.

Furthermore, a hydraulic buffer mechanism is also connected between the linear guide rail connecting plate and the column.

Furthermore, the two ends of the flying wing mounting seat are connected with a support through a connecting plate, and the cylinder is mounted on the support.

Furthermore, a laser detection internal thread mechanism is connected to the support, including a laser camera, and the laser camera is connected to the support through a laser camera connector.

Furthermore, an air blowing throttle valve is connected to the support through an air blowing throttle valve connector.

Furthermore, the energy-absorbing box pressing mechanism is a floating pressing head mechanism, and the floating pressing head mechanism includes a roller connecting piece, two sides of the roller connecting piece are respectively connected with pressing rollers through a triangle bracket, and the triangle The two corners of the bracket are respectively connected with a pressing roller, and the other corner and the center of the triangle bracket are respectively provided with a connecting hole two and a connecting hole 1. The connecting hole two is a waist-shaped hole, and the connecting hole two is between the support It is connected by the second floating rotating shaft, the first connecting hole and the support are connected by the floating rotating shaft one, and the floating head mechanism and the cylinder one are connected by a roller connector.

Further, the roller connecting piece and the cylinder one are connected by bolts and positioning pins.

Further, the column includes a guide rail mounting seat and limit plates located on both sides of the guide rail, and a protective cover is provided between the guide rail mounting seat and the limit plate.

Further, two ends of the bottom plate are provided with quick-change devices, the quick-change devices include a connecting plate one and a connecting plate two that are perpendicular to each other, and the connecting plate one and the bottom plate are arranged vertically and connected by bolts. A number of bolt holes are opened on the second connecting plate.

Beneficial effect

The beneficial effects of adopting the technical solution of the present invention are:

1. In the present invention, an up and down rail pressing mechanism is added to the middle position of the left and right energy absorbing boxes, which has a compact structure and allows enough welding space. It solves the difficulty of small welding space in the traditional energy-absorbing box positioning device, which cannot enter the gun, or even cannot be welded; the device adopts the method of integral compression of the middle guide rail, which frees up a larger welding space and enables the welding on the left and right sides. It can be completed at one time, avoiding the phenomenon that the welding seam quality is unqualified, such as the traditional welding in several times, such as the arc starting and closing, and the qualification rate and production efficiency are improved.

2. The middle integral guide rail mechanism of the present invention contains a floating joint design and a hydraulic buffer mechanism, which makes the device run smoothly while avoiding hard contact, making the overall structure safer and more reliable.

3. The addition of the adjustable roller pressing mechanism in the present invention makes production more flexible, can realize the sharing of welding platforms for different products, increases the expansion performance of tooling, and has flexible production functions that traditional tooling does not have.

4. The welding device of the present invention integrates a device for detecting the presence or absence of threads by laser, which can improve the automation of thread detection and avoid the risk of easy omission of manual observation.

Description of the drawings

The present invention will be further described below in conjunction with the drawings and embodiments.

Fig. 1 is a schematic diagram of the structure of the welding device in the present invention.

Fig. 2 is a schematic diagram of the structure of the middle guide rail integration mechanism in the present invention.

Fig. 3 is a schematic structural diagram of the floating connection mechanism in the present invention.

Figure 4 is a schematic diagram of the structure of the floating head mechanism in the present invention.

Fig. 5 is a schematic diagram of the structure of the laser detecting internal thread mechanism in the present invention.

Figure 6 is a schematic structural diagram of the energy absorbing box in the present invention.

Figure 7 is a schematic diagram of the laser reflection principle in the present invention.

Figure 8 is a schematic diagram of the structure of the hydraulic buffer mechanism in the present invention.

In the picture: 1 bottom plate, 2 energy-absorbing box bottom plate fixing seat, 3 column, 4 cylinder one, 5 cylinder two, 6 box positioning device, 7 flying wing mounting seat, 8 linear guide mechanism, 9 linear guide connecting plate, 10 Floating connecting mechanism, 101 ball head floating rod, 102 locking nut one, 103 connecting sleeve, 104 inner spherical floating block, 105 locking nut two, 106 external thread section, 107 internal thread section one, 11 hydraulic buffer mechanism, 12 Laser camera connector, 13 laser camera, 14 blow throttle valve connector, 15 blow throttle valve, 16 roller connector, 17 compression roller, 18 floating rotating shaft two, 19 floating rotating shaft one, 20 quick change device, 201 connecting plate one, 202 connecting plate two, 21 box body, 22 box bottom, 23 laser emitting end, 24 laser receiving end, 25 internal thread section two, 26 spring, 27 hydraulic locking mechanism.

Embodiments of the invention

The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

Please refer to Figure 1 to Figure 8. It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings in this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not intended to limit the implementation of the present invention Limited conditions, so it has no technical significance. Any structural modification, proportional relationship change or size adjustment should still fall under the present invention without affecting the effects and objectives that can be achieved by the present invention. The disclosed technical content must be within the scope of coverage. At the same time, terms such as "upper" and "lower" cited in this specification are only for ease of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships are Substantive changes to the technical content should also be regarded as the scope of the present invention.

Please refer to Figure 1. A welding device for an aluminum energy absorbing box includes a bottom plate 1. Two energy absorbing box fixing seats are arranged on the bottom plate 1, and a column 3 and a column 3 are arranged between the two energy absorbing box fixing seats. The upper end of the middle rail integrated mechanism is connected to the middle rail integrated mechanism. The two ends of the middle rail integrated mechanism are respectively connected to the cylinder-4. The bottom of the cylinder-4 is connected with the energy-absorbing box pressing mechanism. The second 5 is connected, and the second 5 cylinder is set through the bottom plate 1;

An energy absorbing box box body positioning device 6 is connected to the middle of the column 3 through a connecting arm, and an energy absorbing box bottom plate fixing seat 2 is provided under the energy absorbing box box body positioning device 6.

Working principle: The energy-absorbing box includes a box body 21 and a box bottom 22. During production, the box body 21 and the box bottom 22 are fixed on the energy-absorbing box fixing seat, and the air cylinder 5 telescopically pushes the floating connecting mechanism 10, so that the force is transmitted to The central guide rail integration mechanism drives the middle guide rail integration mechanism to move up and down. The cylinders at both ends of the middle guide rail integration mechanism telescopically drive the energy-absorbing box pressing mechanism to compress and fix the energy-absorbing box on the box bottom 22. The positioning device on the box body With the cooperation of 6, the box body 21 and the box bottom 22 are stably fixed, and finally the box body 21 and the box bottom 22 are welded together, and the vertical rail pressing mechanism is added in the middle position of the left and right energy absorbing boxes. The structure is compact, which frees up enough welding space, and solves the difficulty of small welding space, inability to enter the gun, or even inability to weld in the traditional energy-absorbing box positioning device. The device adopts the method of integral compression of the middle guide rail, which allows more space. The large welding space enables the welding of the left and right sides to be completed at one time, avoiding the phenomenon that the traditional welding is divided into several times, and the arc starts and ends repeatedly, which leads to the unqualified weld quality. At the same time, the qualification rate and production are improved. effectiveness.

Please refer to Fig. 2, in order to improve the overall rigidity of the middle guide rail integration mechanism, the middle guide rail integration mechanism in this embodiment adopts steel structure welding as a whole, which has good rigidity and high strength and strong impact resistance. The middle guide rail integrated mechanism includes a flying-wing mounting seat 7 and a sliding table mechanism. The sliding table mechanism includes a linear guide mechanism 8. The linear guide mechanism 8 is connected with a linear guide connecting plate 9, and the linear guide connecting plate 9 is connected to the mounting seat through a connector , The connecting piece, the linear guide rail connecting plate 9 is connected with the cylinder two 5 through the floating connecting mechanism 10, and the hydraulic buffer mechanism 11 is also connected between the linear guide rail connecting plate 9 and the column 3; the cylinder two 5 telescopically pushes the floating connecting mechanism 10, so that the force It is transmitted to the linear guide rail connecting plate 9 to drive the linear guide rail to move up and down, and the floating connection mechanism 10 can eliminate the error caused by the cylinder movement and processing in the structure, so that the overall structure is more reliable and smooth during the movement. The two ends of the flying wing mounting seat 7 are connected with the support through the connecting plate, and the cylinder 4 is installed on the support. The flying wing structure is designed with uniform pressure on both sides, which can well balance the force. The integrated hydraulic buffer and floating connection mechanism 10 make the structure more reasonable, reduce impact, and use more smoothly.

3, the floating connecting mechanism 10 of the present invention includes a connecting sleeve 103, a ball-head floating rod 101 is movably arranged in the connecting sleeve 103, and the floating rod section of the ball-head floating rod 101 extends upwards out of the connecting sleeve 103 Connected to the linear guide rail connecting plate 9, there are also two inner spherical floats 104 arranged in the connecting sleeve 103, and the ball head of the ball floating rod 101 is located between the two inner spherical floats 104; An end connector is arranged under the head floating rod 101. The end connector extends downwards from the connecting sleeve 103 and is connected to the cylinder. The ball head floating rod 101 can have an allowable gap between the two inner spherical floating blocks 104. Internal, make limited floating adjustment, which can eliminate the error caused by cylinder movement and processing in the structure, so that the overall structure is more reliable and smooth during the movement; the upper end of the floating mechanism is threadedly connected with the linear guide connecting plate 9, and the lower end Threaded connection with cylinder. The air cylinder telescopes and pushes the floating structure mechanism so that the force is transmitted to the direct rail connecting plate.

The floating rod section has a ring of external thread section 106 and a lock nut 102. The floating rod section and the linear guide connecting plate 9 are fixedly connected by threads and a lock nut 102. The end connector and the connecting sleeve 103 pass through Lock nut two 105 is connected, there is a cavity inside the end connector, and there is an internal thread section 107 in the cavity, and the end connector is connected to the cylinder through the internal thread; with this structure, the floating joint mechanism is connected to the linear guide The installation and disassembly between the plate 9 and the cylinder is more convenient, and both ends are fastened with lock nuts, making the connection firmer.

In order to improve the connection stability between the hydraulic buffer mechanism 11 and the welding device, the top end of the hydraulic buffer mechanism 11 is connected to the linear guide connecting plate 9 through a connecting seat. The body of the buffer mechanism is connected to the column 3 through a bracket. The bracket includes a connecting ring and a connecting plate. , The connecting ring and the body of the buffer mechanism are fixed by bolts, and the connecting plate is fixed on the column 3 by bolts. With this structure, the hydraulic buffer mechanism 11 will not loosen during repeated use and can maintain effective buffering for a long time. Function to ensure smooth operation of the device, avoid hard contact, and make the overall structure safer and more reliable.

Please refer to Figure 8. The upper part of the hydraulic buffer mechanism 11 is provided with a spring 26 and a hydraulic locking mechanism 27 inside. With this structure, the force at the end can be adjusted, which can be adapted to absorb the impact of different sizes, so that the mechanism is in More stable during operation.

Please refer to Figure 5, Figure 6 and Figure 7, the energy absorbing box in the present invention includes a box body 21 and a box bottom 22, the box body 21 is also provided with internal threaded holes, in order to detect that the inner hole on the energy absorbing box is a light hole It is also a threaded hole. The support is connected with a laser detection internal thread mechanism, including a laser camera 13, which is connected to the support through the laser camera connector 12, and emits laser through the laser emitting end 23. If the internal thread section 25 is not hit Thread, the laser will be directly reflected due to the reflection principle, and the laser receiving end 24 will not receive any reflected beam; if there is a thread, the laser will be reflected back on the thread profile, and the receiving end can receive the beam and feed it back to The system has a value, so as to achieve the function of detecting whether the internal thread of the workpiece is processed or missed in the previous sequence.

At the same time, considering that smoke will be generated during the welding process, a blowing throttle valve 15 is also connected to the support through the blowing throttle valve connector 14, and a blowing throttle valve 15 is added on the side to blow air directly to the lens to achieve Prevent the laser of the lens from being interfered and make the detection more accurate.

Please refer to Figure 4, the energy-absorbing box pressing mechanism is a floating head mechanism, the floating head mechanism includes a roller connection 16, the roller connector 16 and the cylinder 4 are connected by bolts and positioning pins, the roller connector 16 The two sides are respectively connected with a compression roller 17 through a tripod bracket. Two corners of the tripod bracket are respectively connected with a compression roller 17, and the other corner and the center of the tripod bracket are respectively provided with a connecting hole two and a connecting hole 1, and a connecting hole two It is a waist-shaped hole. The connecting hole 2 and the support are connected by a floating rotating shaft 18, the connecting hole 1 and the support are connected by a floating rotating shaft 19, and the floating head mechanism and the cylinder 4 are connected by a roller. Piece 16 is connected. Floating head mechanism, the air cylinder 4 pushes the floating mechanism to compress the upper plane of the workpiece. The pressing roller 17 and its connecting mechanism can be adjusted slightly around the floating rotating shaft 19, and the floating rotating shaft 18 is used to limit two The adjustment amount of the float of each roller to make it float within the specified range. When the inclination angle of the upper plane of similar products is changed, the pressing roller 17 can be rotated and adjusted around the rotation axis, so as to ensure that the roller is always pressed on the upper surface of the workpiece and realize the function of being compatible with similar products.

The column 3 includes a guide rail mounting seat and limit plates located on both sides of the guide rail. A protective cover is arranged between the guide rail mounting seat and the limit plate. The structural design of the protective cover effectively protects the sliding table mechanism and makes the entire device Can be used smoothly for a long time.

The two ends of the bottom plate 1 are provided with quick change devices 20. The quick change device 20 includes a connecting plate one 201 and a connecting plate two 202 which are perpendicular to each other. The connecting plate one 201 and the bottom plate 1 are vertically arranged and connected by bolts, and the connecting plate two 202 There are a number of bolt holes on the upper part, a reinforcing plate is also provided between the first connecting plate 201 and the bottom plate 1, and the second connecting plate 202 is a right-angle connecting plate. Through the quick change device 20, the whole set of tooling can be quickly fixed to a certain shelf or support. On the base, and adopting the above structure, two or three sets of tooling equipment can be set on the bracket or the support at the same time, which improves the welding efficiency.

Taking the above-mentioned ideal embodiment according to the present invention as enlightenment, through the above-mentioned description content, relevant workers can make various changes and modifications without departing from the scope of the technical idea of the present invention. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the description, and its technical scope must be determined according to the scope of the claims.

Claims

A welding device for an aluminum energy absorbing box, which is characterized in that it comprises a bottom plate on which two energy absorbing box fixing seats are arranged, and a column is arranged between the two energy absorbing box fixing seats, and the upper end of the column is connected There is a middle guide rail integration mechanism, the two ends of the middle guide rail integration mechanism are respectively connected with cylinder one, the bottom of the cylinder one is connected with an energy absorption box pressing mechanism, and the bottom of the middle guide rail integration mechanism is connected to the cylinder through a floating connection mechanism. Second connection, the second cylinder is set through the bottom plate;

An energy absorbing box box body positioning device is connected to the middle of the column through a connecting arm, and an energy absorbing box bottom plate fixing seat is arranged under the energy absorbing box box body positioning device.
The welding device of an aluminum energy absorbing box according to claim 1, wherein the intermediate guide rail integration mechanism includes a flying wing mounting seat and a sliding table mechanism, and the sliding table mechanism includes a linear guide rail mechanism. The linear guide rail mechanism is connected with a linear guide rail connecting plate, the linear guide rail connecting plate is connected with the mounting base through a connecting piece, and the connecting piece linear guide rail connecting plate is connected with the cylinder 2 through a floating connecting mechanism.
The welding device of an aluminum energy absorbing box according to claim 2, wherein a hydraulic buffer mechanism is also connected between the linear guide rail connecting plate and the column.
The welding device of an aluminum energy absorbing box according to claim 2, wherein the two ends of the flying wing mounting seat are connected with a support through a connecting plate, and the air cylinder is mounted on the support.
The welding device of an aluminum energy-absorbing box according to claim 2, wherein the support is connected with a laser detection internal thread mechanism, including a laser camera, and the laser camera is connected to the support through a laser camera connector.座连接。 Block connection.
The welding device of an aluminum energy absorbing box according to claim 2, wherein the support is also connected with a blowing throttle valve through a blowing throttle valve connector.
The welding device of an aluminum energy absorbing box according to claim 1, wherein the energy absorbing box pressing mechanism is a floating pressure head mechanism, the floating pressure head mechanism includes a roller connector, and the roller The two sides of the connecting piece are respectively connected with compression rollers through a triangle bracket, two corners of the triangle bracket are respectively connected with compression rollers, and the other corner and the center of the triangle bracket are respectively provided with a connecting hole two and a connecting hole 1, respectively, The second connecting hole is a waist-shaped hole, and the second connecting hole is connected with the support through the second floating rotating shaft, and the first connecting hole is connected with the support through a floating rotating shaft. The floating head mechanism is connected to the air cylinder. One is connected by a roller connecting piece.
The welding device for an aluminum energy absorbing box according to claim 1, wherein the roller connecting member and the cylinder one are connected by bolts and positioning pins.
The welding device of an aluminum energy absorbing box according to claim 1, wherein the column comprises a guide rail mounting seat and a limit plate located on both sides of the guide rail, between the guide rail mounting seat and the limit plate A protective cover is provided.
The welding device of an aluminum energy-absorbing box according to claim 1, wherein the two ends of the bottom plate are provided with quick-change devices, and the quick-change devices include a connecting plate one and two connecting plates that are perpendicular to each other. , The first connecting plate and the bottom plate are arranged vertically and connected by bolts, and the second connecting plate is provided with a plurality of bolt holes.