Annular cooling cover welding clamp and welding system

Abstract

The invention provides an annular cooling cover welding fixture. The annular cooling cover welding fixture comprises a bottom plate; the arc-shaped clamping frame is arranged on one side of the bottom plate, a plurality of rotating air cylinders are arranged on the arc-shaped surface of the arc-shaped clamping frame, and clamping rods are arranged at the driving ends of the rotating air cylinders; the transverse positioning assembly comprises at least one transverse clamping air cylinder which is arranged on the other side of the bottom plate, and the driving end of the transverse clamping air cylinder points to the arc-shaped clamping frame; the longitudinal positioning assembly comprises a longitudinal clamping air cylinder and a longitudinal positioning block, the longitudinal clamping air cylinder and the longitudinal positioning block are arranged at the front end and the rear end of the bottom plate respectively, and the driving end of the longitudinal clamping air cylinder points to the longitudinal positioning block. The welding system comprises a rack, the clamp, a carrying robot and a welding robot. An aluminum casting body can be accurately positioned, an aluminum forming plate is clamped on the body, the aluminum casting body and the aluminum forming plate are stably attached during welding, welding is smooth, and quality is high; according to the welding system, automatic conveying, clamping and welding of the annular cooling cover are achieved, the working efficiency is high, and the personnel cost and the operation risk are low.

Description

Technical Field

[0001] The invention relates to the technical field of welding fixtures, in particular to an annular cooling hood welding fixture and a welding system. Background Art

[0002] Nowadays, there is a new structure of an annular cooling cover for engines, which has an annular cooling water channel inside. Due to structural limitations, the annular cooling cover cannot be cast as a whole. It is decomposed into an aluminum casting body and aluminum molded plates located on both sides of the body. The aluminum casting body and the aluminum molded plates are prepared and welded to form an annular cooling cover.

[0003] Arc-shaped grooves are designed on both sides of the aluminum casting body. The aluminum molded plates are placed in the grooves to fit the shape of the aluminum casting body and form an inner cavity between the aluminum casting body, that is, the cooling water channel. Currently, during welding, the operator presses the aluminum molded plate onto the aluminum casting body and then uses a welding gun to weld its periphery. During the welding process, there are problems such as unstable fit between the aluminum molded plate and the aluminum casting body and uneven welding surface.

[0004] Therefore, it is necessary to improve the existing technology. Summary of the invention

[0005] The present invention provides an annular cooling cover welding fixture and a welding system to solve the above problems.

[0006] A technical solution adopted by the present invention is:

[0007] A welding fixture for an annular cooling hood, wherein the annular cooling hood is welded by an aluminum casting body and aluminum forming plates attached to both sides of the aluminum casting body, and the fixture comprises:

[0008] Base plate;

[0009] An arc-shaped clamping frame, the arc-shaped clamping frame is arranged on one side of the bottom plate, a plurality of rotary cylinders are arranged along the arc-shaped surface of the arc-shaped clamping frame, and a clamping rod is arranged at the driving end of each rotary cylinder for pressing the aluminum forming plate onto the aluminum casting body;

[0010] A transverse positioning assembly, the transverse positioning assembly comprising at least one transverse clamping cylinder, the transverse clamping cylinder being arranged on the other side of the base plate, with a driving end thereof pointing to the arc-shaped clamping frame, and being used for pushing the aluminum casting body toward the arc-shaped clamping frame;

[0011] A longitudinal positioning assembly includes a longitudinal clamping cylinder and a longitudinal positioning block, wherein the longitudinal clamping cylinder and the longitudinal positioning block are respectively arranged at the front and rear ends of the base plate, and the driving end of the longitudinal clamping cylinder points to the longitudinal positioning block, and cooperates with the longitudinal positioning block to push the aluminum casting body to the welding position.

[0012] By setting the base plate, arc-shaped clamping frame, transverse and longitudinal positioning components, the aluminum casting body can be positioned at the welding position, and the aluminum forming plate is pressed onto the aluminum casting body by the rotating cylinder and the clamping rod, and then welding is performed to achieve the purpose of stable fitting, smooth welding, high efficiency and high quality processing, and finally form an annular cooling hood.

[0013] Furthermore, the rotary cylinders are arranged at equal intervals on the arc surface of the arc clamping frame so as to evenly apply the clamping force.

[0014] Furthermore, two contact rods are arranged on the clamping rod, and the two contact rods are arranged perpendicular to the clamping rod for directly contacting and pressing the aluminum forming plate.

[0015] Furthermore, the lateral positioning assembly includes three lateral clamping cylinders, two of which are arranged at the front and rear ends of the base plate to push the bottom of the aluminum casting body, and the other lateral clamping cylinder is arranged in the middle of the base plate through a cylinder bracket to push the middle area of ​​the aluminum casting body.

[0016] Furthermore, a plurality of limit rods are provided on the arc-shaped clamping frame for limiting the distance between the aluminum casting body and the arc-shaped clamping frame so that the handling robot can grab the welded annular cooling cover.

[0017] An annular cooling hood welding system comprises: a frame, the above-mentioned fixture, a handling robot and a welding robot;

[0018] The clamp is arranged on the frame to position and clamp the aluminum casting body and the aluminum forming plate;

[0019] The transport robot transports the aluminum casting body to the base plate;

[0020] The welding robot is arranged beside the frame and welds the edges of the aluminum forming plates according to a set path.

[0021] Furthermore, when the welding robot welds the edge of the aluminum molded plate on one side, it welds the upper part, the middle part, and the lower part in sequence, and the corresponding rotary cylinder releases the aluminum molded plate in sequence.

[0022] Furthermore, during welding, the welding directions of the single welds are consistent, so that the joints of the upper, middle and lower welds are smooth.

[0023] Furthermore, a U-shaped fixed track is arranged around the frame, and the welding robot has a movable base adapted to the U-shaped fixed track. The welding robot completes the welding work on both sides by moving on the U-shaped fixed track.

[0024] Furthermore, sensing devices are provided at both ends of the U-shaped fixed track for identifying when the welding robot reaches the welding position.

[0025] The beneficial effects of the annular cooling cover welding fixture and welding system of the present invention are:

[0026] 1. By setting the bottom plate, the arc-shaped clamping frame with a rotating cylinder and a clamping rod, and the transverse and longitudinal positioning components, the aluminum casting body can be accurately positioned, and the aluminum forming plate is clamped on the body, and then welded. The two fit stably, the welding is smooth, and the product quality is high;

[0027] 2. Use handling robots and welding robots in conjunction with fixtures to achieve automatic transportation, clamping and welding of the annular cooling hood, effectively improving work efficiency and reducing personnel costs and operational risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 1 is a front view of an annular cooling cover welding fixture and a welding system according to a first embodiment of the present invention;

[0029] Figure 2 1 is a side view of an annular cooling cover welding fixture and a welding system according to a first embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of the sequence of welding one side by the welding robot in the first embodiment of the present invention;

[0031] Figure 4 is a top view schematic diagram of the mobile arrangement of the welding robot in the first embodiment of the present invention;

[0032] The markings of the components in the accompanying drawings are as follows: 1. Base plate, 2. Arc clamping frame, 3. Horizontal clamping cylinder, 4. Longitudinal clamping cylinder, 5. Longitudinal positioning block, 6. Aluminum casting body, 7. Aluminum forming plate, 8. U-shaped fixed rail, 9. Movable base, 21. Rotating cylinder, 22. Clamping rod, 23. Contact rod, 24. Limit rod, a. Upper part, b. Middle part, c. Lower part. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "horizontal", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention. They cannot indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0035] See also Figure 1 and Figure 2 The first embodiment of the present invention provides an annular cooling cover welding fixture, which is welded by its aluminum casting body 6 and aluminum forming plates 7 attached to both sides of the aluminum casting body 6. Arc-shaped grooves are designed on both sides of the aluminum casting body 6. The aluminum forming plates 7 are placed in the grooves to fit the shape of the aluminum casting body 6 and form an inner cavity between the aluminum casting body 6, that is, a cooling water channel. The fixture includes: a bottom plate 1, an arc-shaped clamping frame 2 arranged on the bottom plate 1, a lateral positioning component and a longitudinal positioning component;

[0036] The bottom plate 1 is used to set other structures and place the aluminum casting body 6;

[0037] The arc-shaped clamping frame 2 is arranged on the left side of the bottom plate 1. Six rotary cylinders 21 are evenly arranged along the arc-shaped surface of the arc-shaped clamping frame 2, three on each side, and symmetrically arranged. A clamping rod 22 is arranged at the driving end of each rotary cylinder 21. Two contact rods 23 are arranged on the clamping rod 22 toward the direction of the aluminum forming plate 7, which are used to apply a vertical force to press the aluminum forming plate 7 onto the aluminum casting body 6.

[0038] The transverse positioning assembly includes three transverse clamping cylinders 3, two of which are arranged at the front and rear ends of the base plate 1, facing the bottom of the aluminum casting body 6, and another transverse clamping cylinder 3 is arranged in the middle of the base plate 1 through a cylinder bracket, facing the middle area of ​​the aluminum casting body 6. Transverse positioning pieces are arranged at the ends of each transverse clamping cylinder 3 to better contact the aluminum casting body 6. The three transverse clamping cylinders 3 are used to apply uniform force to push the aluminum casting body 6 toward the arc-shaped clamping frame 2;

[0039] The longitudinal positioning assembly includes a longitudinal clamping cylinder 4 and a longitudinal positioning block 5, which are respectively arranged at the front and rear ends of the base plate 1. The driving end of the longitudinal clamping cylinder 4 points to the longitudinal positioning block 5 and is provided with a longitudinal positioning sheet, which cooperates with the longitudinal positioning block 5 to adjust the position of the aluminum casting body 6 in the front and rear directions so that it is accurately in the welding position.

[0040] Specifically, four limit rods 24 are provided on the arc-shaped clamping frame 2, two on each side, symmetrically arranged to limit the distance between the aluminum casting body 6 and the arc-shaped clamping frame 2, so that the handling robot can grab the welded annular cooling cover.

[0041] Provided is an annular cooling hood welding system, comprising: a frame, the above-mentioned fixture, a handling robot and a welding robot;

[0042] The fixture is arranged on the frame, and the bottom plate 1 is used as the working surface of the frame, and the aluminum casting body 6 and the aluminum forming plate 7 are positioned and clamped by the fixture;

[0043] The handling robot transports the aluminum casting body 6 to the base plate 1 from the front end of the fixture;

[0044] The welding robot is arranged next to the frame, and its welding gun welds the edge of the aluminum molded plate 7 according to the set path. When welding the edge of the aluminum molded plate 7 on one side, it welds in the order of the upper part a, the middle part b, and the lower part c, and the corresponding rotating cylinder 21 releases the aluminum molded plate 7 in sequence.

[0045] See also Figure 3 During welding, the welding direction of a single weld is consistent, so that the joints of the upper, middle and lower welds are smooth.

[0046] In this embodiment, only one welding robot is provided. To ensure that the welding robot can move accurately and safely between the two welding positions in front and behind the frame, the following settings are made:

[0047] See also Figure 4 A U-shaped fixed rail 8 is arranged around the frame, and the welding robot has a movable base 9 adapted to the U-shaped fixed rail 8. After completing the welding of the aluminum molded plate 7 on one side, the welding robot moves along the U-shaped fixed rail 8 to the other side, and then welds the aluminum molded plate 7 on the other side.

[0048] Specifically, sensing devices are provided at both ends of the U-shaped fixed rail 8 for identifying that the welding robot has reached the welding position.

[0049] Specifically, visual sensors are provided on the surfaces of the welding robot except the surface where the welding gun is located, so as to identify obstacles.

[0050] The working principle of the annular cooling hood welding system of the present invention is as follows: the handling robot grabs the aluminum casting body and transports the aluminum casting body to the bottom plate from the front end of the clamp; the longitudinal clamping cylinder and the transverse clamping cylinder work to fix the aluminum casting body to one side of the arc-shaped clamping frame; the aluminum forming plate is placed on both sides of the aluminum casting body (the two sides of the aluminum casting body have steps for positioning the aluminum forming plate); the rotating cylinder rotates the clamping rod 90 degrees and contracts the driving end, and the contact rod presses the aluminum forming plate onto the aluminum casting body; the welding robot is located at the rear end of the frame, and welds the upper, middle and lower parts of this side in sequence, and at the same time, the rotating cylinder is reset in sequence to make room for the welding gun to move; thereafter, the welding robot moves to the welding position on the other side along the U-shaped fixed track, and welds the upper, middle and lower parts of the other side in sequence, and at the same time, the rotating cylinder on the other side is reset in sequence; after welding is completed, the welding robot returns, and the handling robot takes away the annular cooling hood from the front end.

[0051] The beneficial effects of the annular cooling cover welding fixture and welding system of the present invention are:

[0052] 1. By setting the bottom plate, the arc-shaped clamping frame with a rotating cylinder and a clamping rod, and the transverse and longitudinal positioning components, the aluminum casting body can be accurately positioned, and the aluminum forming plate is clamped on the body, and then welded. The two fit stably, the welding is smooth, and the product quality is high;

[0053] 2. Use handling robots and welding robots in conjunction with fixtures to achieve automatic transportation, clamping and welding of the annular cooling hood, effectively improving work efficiency and reducing personnel costs and operational risks.

[0054] 3. Design a U-shaped fixed track around the frame and equip the welding robot with a movable base so that it can move accurately and safely to complete the welding work on both sides.

[0055] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A ring-shaped cooling cover welding fixture, characterized in that: The annular cooling cover is welded by an aluminum casting body and aluminum forming plates attached to both sides of the aluminum casting body. The fixture includes: Base plate; An arc-shaped clamping frame, wherein the arc-shaped clamping frame is arranged on one side of the bottom plate, and a plurality of rotary cylinders are arranged along the arc-shaped surface of the arc-shaped clamping frame, and a clamping rod is arranged at the driving end of each rotary cylinder; A transverse positioning assembly, the transverse positioning assembly comprising at least one transverse clamping cylinder, the transverse clamping cylinder being arranged on the other side of the base plate, with its driving end pointing to the arc-shaped clamping frame; A longitudinal positioning assembly comprises a longitudinal clamping cylinder and a longitudinal positioning block, wherein the longitudinal clamping cylinder and the longitudinal positioning block are respectively arranged at the front and rear ends of the base plate, and the driving end of the longitudinal clamping cylinder points to the longitudinal positioning block.

2. The annular cooling hood welding fixture according to claim 1, characterized in that: The rotating cylinders are arranged at equal intervals on the arc surface of the arc clamping frame.

3. An annular cooling hood welding fixture according to any one of claims 1 or 2, characterized in that: The clamping rod is also provided with two contact rods, and the two contact rods are arranged perpendicular to the clamping rod.

4. The annular cooling hood welding fixture according to claim 3, characterized in that: The lateral positioning assembly includes three lateral clamping cylinders, two of which are arranged at the front and rear ends of the base plate to push the bottom of the aluminum casting body, and the other lateral clamping cylinder is arranged in the middle of the base plate through a cylinder bracket to push the middle area of ​​the aluminum casting body.

5. The annular cooling hood welding fixture according to claim 4, characterized in that: A plurality of limiting rods are arranged on the arc-shaped clamping frame.

6. An annular cooling hood welding system, characterized in that: include: A frame, a fixture, a handling robot and a welding robot as described in any one of claims 1 to 5; The clamp is arranged on the frame to position and clamp the aluminum casting body and the aluminum forming plate; the transport robot transports the aluminum casting body to the bottom plate; The welding robot is arranged beside the frame and welds the edges of the aluminum forming plates according to a set path.

7. The annular cooling hood welding system according to claim 6, characterized in that: When the welding robot welds the edge of the aluminum forming plate on one side, it welds in the order of the upper part, the middle part and the lower part, and the corresponding rotary cylinder releases the aluminum forming plate in turn.

8. The annular cooling hood welding system according to claim 7, characterized in that: During welding, the welding direction of a single weld is consistent.

9. The annular cooling hood welding system according to claim 8, characterized in that: A U-shaped fixed track is arranged around the frame, and the welding robot has a movable base adapted to the U-shaped fixed track. The welding robot completes the welding work on both sides by moving on the U-shaped fixed track.

10. The annular cooling hood welding system according to claim 9, characterized in that: Both ends of the U-shaped fixed track are provided with sensing devices for identifying that the welding robot has arrived at the welding position.

Images