Pneumatic clamp for tank welding

Abstract

The utility model provides a pneumatic clamp for tank welding. The pneumatic clamp comprises a main body frame part, an outer ring fixing part and an inner ring fixing part. The main body frame part comprises a bottom plate and an outer supporting plate which are arranged at intervals, the outer supporting plate is connected with the bottom plate through a plurality of round rods, and a passing opening is formed in the middle of the outer supporting plate; the outer ring fixing part comprises an annular movable plate, a first lifting air cylinder, a clamping air cylinder and a clamping block. The inner ring fixing part comprises a second lifting air cylinder and a pneumatic finger. According to the pneumatic clamp for tank welding, efficient switching between inner wall face fixing and outer wall face fixing of a tank workpiece can be achieved. The inner wall surface of the tank body workpiece is fixed when the outer circular seam of the tank body workpiece needs to be welded, and the outer wall surface of the tank body workpiece is fixed when the inner circular seam of the tank body workpiece needs to be welded. And manpower consumption can be reduced, the production efficiency is improved, and the production process is safer.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and in particular to a pneumatic clamp for tank welding. Background Art

[0002] Welding is an important mechanical processing method in modern industrial production, especially when manufacturing large structural parts or complex machine parts, the welding process is even more indispensable. The welding workstation is an automated welding system that uses robots for welding work. It has the characteristics of fast welding speed, high welding quality, high welding stability and high degree of automation.

[0003] The welding workstation is usually composed of a welding positioner and a welding robot. The welding positioner is used to rotate and flip the workpiece, which can adjust the position of the workpiece during the welding process, achieve the best weld position welding, and reduce the labor intensity of manual workpiece handling. The welding robot can coordinate with the welding positioner to automatically weld at various welding positions of the workpiece.

[0004] At present, the workpiece is usually installed directly on the rotating disk surface of the welding positioner. When welding tanks with high sealing requirements such as airtight tanks, it is necessary to weld both the inner and outer annular seams of the tank. It is difficult to install it directly on the rotating disk surface of the welding positioner, so the tank needs to be fixed with the help of a clamp. When the clamp is clamped on the outside of the tank, since the clamp will block the outside of the tank, only the inner annular seam can be welded. Correspondingly, when the clamp is clamped on the inside of the tank, only the outer annular seam can be welded. If both the inner and outer annular seams of the tank are to be welded, it is necessary to replace the clamp or adjust the workpiece after welding one side of the tank. This process relies on manual completion, which is not only time-consuming and labor-intensive, but also reduces production efficiency and is not safe enough. Utility Model Content

[0005] The embodiment of the present application provides a pneumatic clamp for tank welding, comprising a main frame portion, an outer ring fixing portion and an inner ring fixing portion;

[0006] The main frame part comprises a bottom plate and an outer support plate which are spaced apart from each other, the outer support plate is connected to the bottom plate through a plurality of round rods, and a through hole is provided in the middle of the outer support plate;

[0007] The outer ring fixed part includes an annular movable plate, a first lifting cylinder, a clamping cylinder and a clamping block, the bottom of the first lifting cylinder is fixed to the bottom plate, the piston rod of the first lifting cylinder is connected to the annular movable plate, and the annular movable plate is located between the bottom plate and the outer support plate; a plurality of clamping cylinders are installed on the annular movable plate, and the plurality of clamping cylinders are evenly distributed along the circumference of the annular movable plate, and a clamping block is connected to the piston rod of each clamping cylinder; the first lifting cylinder can drive the annular movable plate to approach or move away from the outer support plate, so that the clamping block extends from the side of the outer edge of the outer support plate to the outside of the outer end surface of the outer support plate or retracts the clamping block between the bottom plate and the outer support plate;

[0008] The inner ring fixing part includes a second lifting cylinder and a pneumatic finger. The bottom of the second lifting cylinder is fixed on the base plate. The pneumatic finger is connected to the piston rod of the second lifting cylinder. The second lifting cylinder can drive the pneumatic finger to pass through the inner ring of the annular movable plate and the through port.

[0009] The pneumatic clamp for tank welding provided in the embodiment of the present application can realize efficient switching between fixing the inner wall surface and fixing the outer wall surface of the tank workpiece. When it is necessary to weld the outer annular seam of the tank workpiece, the inner wall surface of the tank workpiece is fixed, and when it is necessary to weld the inner annular seam of the tank workpiece, the outer wall surface of the tank workpiece is fixed. It can reduce manpower consumption, improve production efficiency, and make the production process safer.

[0010] In one possible implementation manner, in the pneumatic clamp for tank welding provided in an embodiment of the present application, a first sliding bearing is provided on the annular movable plate, and the first sliding bearing is sleeved on the round rod.

[0011] In one possible embodiment, the pneumatic clamp for tank welding provided in an embodiment of the present application, the inner ring fixing part also includes an inner movable plate, the second lifting cylinder is installed and fixed on the outer end surface of the inner movable plate, and the piston rod of the second lifting cylinder is fixedly connected to the inner end surface of the inner movable plate.

[0012] In one possible implementation manner, the pneumatic clamp for tank welding provided in an embodiment of the present application, the main frame portion further includes an intermediate support plate, the intermediate support plate is located between the bottom plate and the outer support plate, and the intermediate support plate is connected to the bottom plate through a plurality of the round rods;

[0013] The middle support plate is provided with a second sliding bearing, the second sliding bearing is sleeved on a sliding rod, and one end of the sliding rod is fixedly connected to the inner end surface of the inner movable plate.

[0014] In one possible implementation manner, in the pneumatic clamp for tank welding provided in an embodiment of the present application, there are multiple second sliding bearings, and the multiple second sliding bearings are evenly distributed along the circumference of the annular movable plate.

[0015] In one possible implementation manner, in the pneumatic clamp for tank welding provided in the embodiment of the present application, the side end surface of the clamping block and the side end surface of the clamping claw of the pneumatic finger both have arc-shaped clamping surfaces.

[0016] In one possible implementation manner, in the pneumatic clamp for tank welding provided in an embodiment of the present application, the outer edge of the outer support plate has a notch, and the notch is used for the clamping block to pass through.

[0017] In one possible implementation manner, in the pneumatic clamp for tank welding provided in an embodiment of the present application, there are multiple first sliding bearings, and the multiple first sliding bearings are evenly distributed along the circumference of the annular movable plate.

[0018] In one possible implementation manner, the pneumatic clamp for tank welding provided in an embodiment of the present application, the pneumatic fingers include three-jaw pneumatic fingers.

[0019] In one possible implementation manner, in the pneumatic clamp for tank welding provided in an embodiment of the present application, the clamping cylinder includes a three-axis cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 The structure of the pneumatic clamp for tank welding provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the pneumatic clamp for tank welding provided in the embodiment of the present application is shown in FIG. Figure 2 ;

[0023] Figure 3 The clamping diagram of the pneumatic clamp for tank welding provided in the embodiment of the present application is Figure 1 ;

[0024] Figure 4 The clamping diagram of the pneumatic clamp for tank welding provided in the embodiment of the present application is Figure 2 ;

[0025] Figure 5 is an exploded schematic diagram of a pneumatic clamp for tank welding provided in an embodiment of the present application;

[0026] Figure 6 It is a structural schematic diagram of the main frame part of the pneumatic clamp for tank welding provided in an embodiment of the present application;

[0027] Figure 7 It is a structural schematic diagram of the outer ring fixing part of the pneumatic clamp for tank welding provided in an embodiment of the present application;

[0028] Figure 8 It is a structural schematic diagram of a clamping block in a pneumatic clamp for tank welding provided in an embodiment of the present application;

[0029] Fig. 9 It is a structural schematic diagram of the inner ring fixing part of the pneumatic clamp for tank welding provided in an embodiment of the present application;

[0030] Fig.10 It is a schematic diagram of the tank workpiece.

[0031] Description of Reference Numerals

[0032] 10-Main frame part;

[0033] 11- bottom plate;

[0034] 12-external support plate;

[0035] 13-middle support plate;

[0036] 14- round rod;

[0037] 15-through the mouth;

[0038] 16-Gap;

[0039] 20-outer ring fixing part;

[0040] 21- annular movable plate;

[0041] 22- first lifting cylinder;

[0042] 23-clamping cylinder;

[0043] 24-clamping block;

[0044] 25-first movable bearing;

[0045] 30-inner ring fixing part;

[0046] 31- second lifting cylinder;

[0047] 32-Pneumatic fingers;

[0048] 33-Inner movable panel;

[0049] 34- second sliding bearing;

[0050] 35-slider;

[0051] 40-tank workpiece;

[0052] 41-outer ring seam;

[0053] 42-Inner ring seam. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0055] Figure 1 The structure of the pneumatic clamp for tank welding provided in the embodiment of the present application is shown in FIG. Figure 1 ; Figure 2 The structure of the pneumatic clamp for tank welding provided in the embodiment of the present application is shown in FIG. Figure 2 ; Figure 3 The clamping diagram of the pneumatic clamp for tank welding provided in the embodiment of the present application is Figure 1 ; Figure 4 The clamping diagram of the pneumatic clamp for tank welding provided in the embodiment of the present application is Figure 2 ; Figure 5 is an exploded schematic diagram of a pneumatic clamp for tank welding provided in an embodiment of the present application; Figure 6 It is a structural schematic diagram of the main frame part of the pneumatic clamp for tank welding provided in an embodiment of the present application; Figure 7 It is a structural schematic diagram of the outer ring fixing part of the pneumatic clamp for tank welding provided in an embodiment of the present application; Figure 8 It is a structural schematic diagram of a clamping block in a pneumatic clamp for tank welding provided in an embodiment of the present application; Fig. 9 It is a structural schematic diagram of the inner ring fixing part of the pneumatic clamp for tank welding provided in an embodiment of the present application; Fig.10 It is a schematic diagram of the tank workpiece.

[0056] See also Figures 1 to 10As shown, the embodiment of the present application provides a pneumatic clamp for tank welding, which is installed on the surface of a rotating disk of a welding positioner, and includes a main frame portion 10, an outer ring fixing portion 20 and an inner ring fixing portion 30, wherein:

[0057] The main frame part 10 is used to connect the rotating disk of the welding positioner and to install and fix other parts.

[0058] See also Figure 6 As shown, the main frame portion 10 includes a base plate 11 and an outer support plate 12 which are spaced apart from each other. The base plate 11 is used to connect to the rotating disk surface of the welding positioner. The outer support plate 12 is connected to the base plate 11 through a plurality of round rods 14. A through hole 15 is provided in the middle of the outer support plate 12 for the pneumatic finger 32 to pass through. The outer edge of the outer support plate 12 has a notch 16 for the clamping block 24 to pass through.

[0059] The outer ring fixing portion 20 is used to clamp the outer wall surface of the can body workpiece 40 .

[0060] See also Figure 7 and Figure 8 As shown, the outer ring fixing part 20 includes an annular movable plate 21, a first lifting cylinder 22, a clamping cylinder 23 and a clamping block 24. The bottom of the first lifting cylinder 22 is fixed on the bottom plate 11, and the piston rod of the first lifting cylinder 22 is connected to the annular movable plate 21, and the annular movable plate 21 is located between the bottom plate 11 and the outer support plate 12. A plurality of clamping cylinders 23 are installed on the annular movable plate 21, and the plurality of clamping cylinders 23 are evenly distributed along the circumference of the annular movable plate 21. The clamping cylinder 23 is a three-axis cylinder, and a clamping block 24 is connected to the piston rod of each clamping cylinder 23. The side end surface of the clamping block 24 has an arc-shaped clamping surface that fits the outer wall surface of the tank workpiece 40. The first lifting cylinder 22 can drive the annular movable plate 21 to move closer to or away from the outer support plate 12, so that the clamping block 24 extends from the notch 16 on the outer edge of the outer support plate 12 to the outside of the outer end surface of the outer support plate 12 or retracts the clamping block 24 between the bottom plate 11 and the outer support plate 12.

[0061] The inner ring fixing portion 30 is used to clamp the inner wall surface of the can body workpiece 40 .

[0062] See also Fig. 9 As shown, the inner ring fixing part 30 includes a second lifting cylinder 31 and a pneumatic finger 32. The bottom of the second lifting cylinder 31 is fixed on the bottom plate 11, and the pneumatic finger 32 is connected to the piston rod of the second lifting cylinder 31. The pneumatic finger 32 is a three-claw pneumatic finger 32. The side end surface of the clamping claw of the pneumatic finger 32 has an arc-shaped clamping surface that fits the inner wall surface of the tank workpiece 40. The second lifting cylinder 31 can drive the pneumatic finger 32 to pass through the inner ring of the annular movable plate 21 and the through port 15.

[0063] Working process: When welding the tank workpiece 40, the second lifting cylinder 31 is extended to allow the pneumatic finger 32 to pass through the through hole 15 in the middle of the outer support plate 12 and protrude from the outer end surface of the outer support plate 12. The tank workpiece 40 is placed on the pneumatic finger 32 for preliminary positioning, and then the pneumatic finger 32 drives the clamping jaw to support the outside, so that the clamping surface on the clamping jaw is attached to and tightly supported by the inner wall surface of the tank body. At this time, the tank workpiece 40 is firmly fixed by the pneumatic finger 32 (see Figure 1 and Figure 3 ), can realize barrier-free welding of the outer annular seam 41 on the outer wall surface of the tank body workpiece 40.

[0064] After the outer annular seam 41 of the tank workpiece 40 is welded, the first lifting cylinder 22 performs an extension action, so that the clamping cylinder 23 passes through the notch 16 on the outer edge of the outer support plate 12 and extends to the outside of the outer end surface of the outer support plate 12, so that the clamping block 24 is located outside the tank workpiece 40. The clamping cylinder 23 is started, driving the clamping block 24 to approach the tank workpiece 40 until the clamping surface of the clamping block 24 is in contact with the outer wall surface of the tank body and clamped, and then the pneumatic fingers 32 and the second lifting cylinder 31 are retracted in sequence, so that the pneumatic fingers 32 are retreated between the bottom plate 11 and the outer support plate 12. At this time, the tank workpiece 40 is firmly fixed by the clamping cylinder 23 (see Figure 2 and Figure 4 ), barrier-free welding of the outer annular seam 41 on the inner wall surface of the tank body workpiece 40 can be achieved.

[0065] Thus, the pneumatic clamp in the above embodiment can realize efficient switching between fixing the inner wall surface and fixing the outer wall surface of the tank body workpiece 40. When the outer annular seam 41 of the tank body workpiece 40 needs to be welded, the inner wall surface of the tank body workpiece 40 is fixed, and when the inner annular seam 42 of the tank body workpiece 40 needs to be welded, the outer wall surface of the tank body workpiece 40 is fixed. It can reduce manpower consumption, improve production efficiency, and make the production process safer.

[0066] See also Figure 7 As shown, specifically, a first sliding bearing is provided on the annular movable plate 21, and the first sliding bearing is sleeved on the round rod 14. The sliding cooperation between the first sliding bearing and the round rod 14 can better improve the strength of the outer ring fixing part 20 and provide a guiding effect for the movement of the annular movable plate 21.

[0067] There are multiple first sliding bearings, and the multiple first sliding bearings are evenly distributed along the circumference of the annular movable plate 21 .

[0068] See also Fig. 9As shown, specifically, the inner ring fixed part 30 also includes an inner movable plate 33, the second lifting cylinder 31 is installed and fixed on the outer end surface of the inner movable plate 33, and the piston rod of the second lifting cylinder 31 is fixedly connected to the inner end surface of the inner movable plate 33. The main frame part 10 also includes an intermediate support plate 13, which is located between the bottom plate 11 and the outer support plate 12, and the intermediate support plate 13 is connected to the bottom plate 11 through a plurality of round rods 14; a second sliding bearing 34 is provided on the intermediate support plate 13, and the second sliding bearing 34 is sleeved on the slide rod 35, and one end of the slide rod 35 is fixedly connected to the inner end surface of the inner movable plate 33. The sliding cooperation between the second sliding bearing 34 and the slide rod 35 can better improve the strength of the inner ring fixed part 30, and provide a guiding effect for the movement of the inner movable plate 33.

[0069] There are multiple second sliding bearings 34 , and the multiple second sliding bearings 34 are evenly distributed along the circumference of the annular movable plate 21 .

[0070] In the description of the embodiments of the present application, it should be understood 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, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application 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 a limitation on the present application. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0071] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pneumatic clamp for tank welding, characterized in that: It includes a main frame part, an outer ring fixing part and an inner ring fixing part; The main frame part comprises a bottom plate and an outer support plate which are spaced apart from each other, the outer support plate is connected to the bottom plate through a plurality of round rods, and a through hole is provided in the middle of the outer support plate; The outer ring fixed part includes an annular movable plate, a first lifting cylinder, a clamping cylinder and a clamping block, the bottom of the first lifting cylinder is fixed to the bottom plate, the piston rod of the first lifting cylinder is connected to the annular movable plate, and the annular movable plate is located between the bottom plate and the outer support plate; a plurality of clamping cylinders are installed on the annular movable plate, and the plurality of clamping cylinders are evenly distributed along the circumference of the annular movable plate, and a clamping block is connected to the piston rod of each clamping cylinder; the first lifting cylinder can drive the annular movable plate to approach or move away from the outer support plate, so that the clamping block extends from the side of the outer edge of the outer support plate to the outside of the outer end surface of the outer support plate or retracts the clamping block between the bottom plate and the outer support plate; The inner ring fixing part includes a second lifting cylinder and a pneumatic finger. The bottom of the second lifting cylinder is fixed on the base plate. The pneumatic finger is connected to the piston rod of the second lifting cylinder. The second lifting cylinder can drive the pneumatic finger to pass through the inner ring of the annular movable plate and the through port.

2. The pneumatic clamp for tank welding according to claim 1, characterized in that: The annular movable plate is provided with a first sliding bearing, and the first sliding bearing is sleeved on the round rod.

3. The pneumatic clamp for tank welding according to claim 1, characterized in that: The inner ring fixing part also includes an inner movable plate, the second lifting cylinder is mounted and fixed on the outer end surface of the inner movable plate, and the piston rod of the second lifting cylinder is fixedly connected to the inner end surface of the inner movable plate.

4. The pneumatic clamp for tank welding according to claim 3 is characterized in that: The main frame part also includes an intermediate support plate, which is located between the bottom plate and the outer support plate, and is connected to the bottom plate through a plurality of round rods; The middle support plate is provided with a second sliding bearing, the second sliding bearing is sleeved on a sliding rod, and one end of the sliding rod is fixedly connected to the inner end surface of the inner movable plate.

5. The pneumatic clamp for tank welding according to claim 4, characterized in that: There are a plurality of the second sliding bearings, and the plurality of the second sliding bearings are evenly distributed along the circumference of the annular movable plate.

6. The pneumatic clamp for tank welding according to claim 1, characterized in that: The side end surface of the clamping block and the side end surface of the clamping claw of the pneumatic finger both have arc-shaped clamping surfaces.

7. The pneumatic clamp for tank welding according to any one of claims 1 to 6, characterized in that: The outer edge of the outer support plate has a notch, and the notch is used for the clamping block to pass through.

8. The pneumatic clamp for tank welding according to claim 2, characterized in that: There are multiple first sliding bearings, and the multiple first sliding bearings are evenly distributed along the circumference of the annular movable plate.

9. The pneumatic clamp for tank welding according to claim 7, characterized in that: The pneumatic finger comprises a three-claw pneumatic finger.

10. The pneumatic clamp for tank welding according to claim 7, characterized in that: The clamping cylinder comprises a three-axis cylinder.

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