Plane welding clamp

Abstract

The utility model relates to the technical field of clamps, in particular to a plane welding clamp, which comprises a supporting seat, an air inflation groove, an air exhaust pipe, an air exhaust pipe, a clamping device and a clamping device, and is characterized in that the supporting seat is provided with a hollow cavity and an air inflation groove for inflating protective gas; the pressing plate is positioned above the supporting seat; and the driving mechanism is arranged in the hollow cavity of the supporting seat and is connected with the bottom of the pressing plate. The utility model aims to overcome the problem of poor welding quality caused by the defects of metal oxidation, heat loss, air holes and the like during welding, and provides a plane welding fixture which can reduce welding defects, effectively ensure the quality and the strength of welding seams and improve the stability and the reliability of welding.

Description

Technical Field

[0001] The utility model relates to the technical field of jigs, and more specifically, to a planar welding jig. Background Art

[0002] In recent years, welding jigs have been widely used in industry. They are auxiliary tools for fixing and supporting workpieces during the welding process and play a crucial role in the welding industry. Whether it is traditional welding processes or modern automated welding production lines, welding jigs play an important role. They can improve the efficiency and quality of welding production, reduce labor costs and improve work safety, and are indispensable important tools in modern industrial production. During common welding processes, defects such as metal oxidation, heat loss, and pores are likely to occur, and the occurrence of these defects seriously affects the quality of welding. However, a good jig can help reduce the formation of welding defects. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the problem of poor welding quality caused by defects such as metal oxidation, heat loss, and pores easily occurring during welding, and to provide a planar welding jig that can reduce welding defects, effectively ensure the quality and strength of the weld seam, and improve the stability and reliability of welding.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A planar welding jig, comprising

[0006] A support base, provided with a hollow cavity for installing and supporting various components, and an inflation groove for filling a protective gas is provided on the support base;

[0007] A pressing plate for pressing the workpiece to be welded, and the pressing plate is located above the support base;

[0008] A driving mechanism for driving the pressing plate to press or release the workpiece to be welded, and the driving mechanism is installed in the hollow cavity of the support base and is connected to the bottom of the pressing plate.

[0009] After the utility model uses the driving mechanism to drive the pressing plate to clamp the workpiece to be welded, a protective gas is filled into the workpiece to be welded from the inflation groove at the bottom of the workpiece to be welded, that is, a protective gas is filled into the back of the weld seam to exclude oxygen and other impurities in the air, thereby reducing the formation of defects such as metal oxidation, heat loss, and pores during welding, improving the stability and reliability of welding, and effectively ensuring the quality and strength of the weld seam.

[0010] Further, there are at least two pressing plates, which are respectively located on both sides of the inflation groove. A welding space is formed between the two pressing plates and above the inflation groove. The two pressing plates can be respectively used to press both sides of the workpiece to be welded, so as to expose the inflation groove, facilitating welding the workpiece to be welded from above.

[0011] Further, there are multiple driving mechanisms, and the driving mechanisms are evenly arranged on both sides of the bottom of each pressing plate. The driving mechanism is used to drive the pressing plate to move up and down. The top of the support seat provides a placement position for the workpiece to be welded, and the pressing plate presses the workpiece to be welded to achieve the clamping function of the workpiece. By arranging the driving mechanisms on both sides of the bottom of the pressing plate, the pressing plate can move more smoothly and the force is balanced during the up and down movement. Moreover, it can also make the pressing plate have a more reliable pressing effect on the workpiece to be welded. Of course, only one driving mechanism can also be set at the bottom of each pressing plate. In this case, preferably, the driving mechanism is set in the middle of the bottom of the pressing plate to facilitate the pressing plate to move more smoothly.

[0012] Further, it further includes a bottom plate, which is installed on the top of the support seat and arranged opposite to the pressing plate. The driving mechanism passes through the bottom plate and is connected to the pressing plate, and the inflation groove penetrates through the bottom plate. This utility model is used for planar welding. In order to ensure the flatness of the weld seam, usually, the surface of the bottom plate for placing the workpiece to be welded needs to be processed relatively flat. The workpiece to be welded is placed on the bottom plate for welding, thus replacing directly placing it on the top surface of the support seat for welding. This can relax the processing requirements for the top surface of the support seat. Since the bottom plate is a straight structure, thinner, and smaller in volume, it is easier to process. Therefore, the processing cost can be reduced, thereby reducing the welding cost, and at the same time, a better welding effect can be ensured.

[0013] Further, the pressing plate is provided with an inclined guiding structure on the side close to the inflation groove. The setting of the guiding structure can facilitate the welding torch to align with the weld seam, making the vision better during welding and improving the welding quality.

[0014] Further, it further includes a gas source, which is communicated with the inflation groove and used to provide a protective gas for the inflation groove.

[0015] Further, the driving mechanism is a cylinder, and also includes a reversing valve, a throttle valve, and a pressure reducing valve that are all connected to the cylinder. The cylinder is used to clamp the workpiece; the reversing valve is used to control the gas flow direction, specifically to realize the upward or downward movement of the pressure plate by controlling the gas flow direction, so that the workpiece to be welded can be pressed or loosened. Preferably, the reversing valve can adopt a two-position five-way hand-operated valve. The throttle valve is used to control the gas flow rate to ensure the normal operation of the driving mechanism while not wasting resources. The pressure reducing valve, also known as a safety valve, is a valve that adjusts the inlet pressure to a preset outlet pressure through its own mechanical components and relies on the energy of the medium itself to automatically maintain the stability of the outlet pressure. When clamping the workpiece to be welded, by adjusting the pressure of the compressed air, an accurate fixing effect can be achieved, which is applicable to workpieces of different sizes and shapes, improves the repeated clamping efficiency of the workpiece, and increases the application range and versatility of the fixture of the present utility model. Within the knowledge scope of those skilled in the art, the driving mechanism includes but is not limited to a structure using a cylinder, and can also be an electric cylinder, or other structures such as a lead screw nut transmission pair, a gear rack transmission pair, etc. to achieve driving.

[0016] Further, it also includes a fixing plate, the fixing plate is installed in the hollow cavity of the support seat, and the driving mechanism is installed on the fixing plate. The fixing plate is used to install and fix the driving mechanism.

[0017] Further, it also includes a plurality of handles, and the plurality of handles are respectively installed on the circumferential outer side of the support seat. The setting of the handles facilitates the movement of the support seat. When moving the support seat, the force can be applied to the handles. Preferably, there are at least two handles, and the two handles are respectively installed on both sides of the support seat; optimally, the support column is square, there are four handles, and the four handles are respectively installed near the four corners of the support seat.

[0018] Further, the shielding gas is an inert gas. Filling the inflation groove with an inert gas can reduce the formation of defects such as oxidized metal, heat loss, and pores, improve the stability and reliability of welding, and effectively ensure the quality and strength of the weld seam. Under normal temperature and pressure, the inert gas is a colorless and odorless monatomic gas, and it is difficult to carry out chemical reactions. Preferably, it is any one of helium, neon, argon, krypton, and xenon.

[0019] Further, the inflation groove is a strip structure. The length direction of the strip-shaped inflation groove is consistent with the weld seam to facilitate the protection of the weld seam.

[0020] The beneficial effects of the present utility model are:

[0021] The utility model has the advantages of simple structure, convenient installation, the function of filling inert gas, convenient adjustment, and the advantages of flexible, convenient and efficient clamping. It is suitable for clamping workpieces in various welding equipment and can meet the welding requirements of a variety of general products. The utility model is connected by modules and integrates pneumatic control functions. A cylinder is used as the power output and is used in conjunction with a manual mechanical valve to control the welding fixture. It has the characteristics of simple and efficient operation, low technical requirements for workers, and quick start-up. At the same time, each component can be adjusted according to the actual use situation, with high flexibility. The utility model is provided with an inflation groove, which can provide a protective gas at the bottom of the weld during welding, thus effectively ensuring the weld quality, reducing the waste products caused by gas factors, and improving the yield rate of products. In short, the design and implementation method of the utility model makes the position adjustment of the welded workpiece more convenient, accurate and efficient. It can be widely used in the welding industry, while reducing the maintenance cost, improving the work efficiency and the welding quality of products, enhancing the stability and reliability of the welded workpiece, and reducing potential risks and losses. It has high practical value and market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the structural diagram of the first direction of the utility model.

[0023] Figure 2 is the structural diagram of the second direction of the utility model.

[0024] Figure 3 is the structural diagram of the third direction of the utility model.

[0025] Among them, the illustration marks are explained as follows:

[0026] 1. Support base; 11. Inflation groove; 12. Base; 13. Frame; 2. Pressure plate; 21. Guide structure; 3. Driving mechanism; 4. Bottom plate; 5. Directional valve; 6. Throttle valve; 7. Pressure reducing valve; 8. Fixed plate; 9. Handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The drawings are only for illustrative purposes and should not be construed as limitations on this patent; for a better illustration of this embodiment, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limitations on this patent.

[0028] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The technical solution of the present utility model will be further specifically described below through specific embodiments and in conjunction with the drawings:

[0030] Embodiment 1

[0031] As Figures 1 to 3 shown in the embodiment of a planar welding fixture of the present utility model, it includes a support base 1 provided with a hollow cavity for installing and supporting various components. An air inlet groove 11 for filling protective gas is provided on the support base 1; a pressing plate 2 for pressing the workpiece to be welded. The pressing plate 2 is located above the support base 1. There are two pressing plates 2 respectively located on both sides of the air inlet groove 11. A welding space is formed between the two pressing plates 2 and above the air inlet groove 11; a driving mechanism 3 for driving the pressing plate 2 to press or release the workpiece to be welded. The driving mechanism 3 is installed in the hollow cavity of the support base 1 and is connected to the bottom of the pressing plate 2. Within the cognitive range of those skilled in the art, the number of the pressing plates 2 can be 1 or more, and the number of the pressing plates 2 is not limited here.

[0032] As an improved solution of this embodiment, it further includes a gas source communicated with the air inlet groove 11 for providing protective gas to the air inlet groove 11. Filling inert gas into the air inlet groove 11 can reduce the formation of defects such as oxidized metal, heat loss and pores, improve the stability and reliability of welding, and effectively ensure the quality and strength of the weld. Under normal temperature and pressure, inert gas is a colorless and odorless monatomic gas and is difficult to undergo chemical reactions. It is preferably any one of helium, neon, argon, krypton, and xenon.

[0033] As an improved solution of this embodiment, the driving mechanism 3 is a cylinder, and further includes a reversing valve 5, a throttle valve 6, and a pressure reducing valve 7 that are all connected to the cylinder. The cylinder is used to clamp the workpiece; the reversing valve 5 is used to control the gas flow direction, specifically to realize the upward or downward movement of the pressing plate by controlling the gas flow direction, so that the workpiece to be welded can be pressed or loosened. Preferably, the reversing valve can adopt a two-position five-way hand-operated valve. The throttle valve 6 can control the gas flow rate while not wasting resources. The pressure reducing valve 7, also known as a safety valve, is a valve that adjusts the inlet pressure to a preset outlet pressure through its own mechanical components and relies on the energy of the medium itself to automatically maintain the stability of the outlet pressure.

[0034] Within the knowledge scope of those skilled in the art, the driving mechanism 3 includes but is not limited to a structure using a cylinder, and can also be an electric cylinder, or other structures such as a lead screw nut transmission pair, a gear rack transmission pair, etc. to achieve driving.

[0035] Furthermore, it further includes a bottom plate 4. The bottom plate 4 is installed on the top of the support seat 1 and is arranged opposite to the pressing plate 2. The driving mechanism 3 passes through the bottom plate 4 and is connected to the pressing plate 2. The air inflation groove 11 runs through the bottom plate 4. This utility model is used for planar welding. In order to ensure the flatness of the weld seam, usually the surface of the bottom plate 4 for placing the workpiece to be welded needs to be processed relatively flat. The workpiece to be welded is placed on the bottom plate 4 for welding, thus replacing the direct placement on the top surface of the support seat 1 for welding. This can relax the processing requirements for the top surface of the support seat 1. Since the bottom plate 4 is a straight structure, thinner, and smaller in volume, it is easier to process. Therefore, the processing cost can be reduced, thereby reducing the welding cost, and at the same time, a better welding effect can be ensured.

[0036] As an improved solution of this embodiment, the pressing plate 2 is provided with an inclined guiding structure 21 on the side close to the air inflation groove 11. The setting of the guiding structure 21 can facilitate the welding torch to align with the weld seam, making the vision during welding better and improving the welding quality.

[0037] As an improved solution of this embodiment, it further includes a fixing plate 8. The fixing plate 8 is installed in the hollow cavity of the support seat 1, and the driving mechanism 3 is installed on the fixing plate 8. The fixing plate 8 is used to install and fix the driving mechanism 3.

[0038] As an improved solution of this embodiment, the air inflation groove 11 is a strip-shaped structure. The length direction of the strip-shaped air inflation groove 11 is consistent with the weld seam to facilitate the protection of the weld seam.

[0039] As an improved solution of this embodiment, it further includes a plurality of handles 9, and the plurality of handles 9 are respectively installed on the circumferential outer side of the support base 1. The setting of the handles 9 facilitates the movement of the support base 1. When moving the support base 1, force can be applied to the handles 9. Preferably, there are at least two handles 9, and the two handles 9 are respectively installed on both sides of the support base 1; optimally, the support column is square, there are four handles 9, and the four handles 9 are respectively installed near the four corners of the support base 1.

[0040] Embodiment 2

[0041] This embodiment is Embodiment 2 of a planar welding fixture. This embodiment is similar to Embodiment 1, but the difference is that there are a plurality of driving mechanisms 3, and the driving mechanisms 3 are evenly distributed on both sides of the bottom of each pressing plate 2. The driving mechanism 3 is used to drive the pressing plate 2 to move up and down. The top of the support base 1 provides a placement position for the workpiece to be welded, and the workpiece to be welded is pressed by the pressing plate 2 to achieve the clamping function of the workpiece. By arranging the driving mechanisms 3 on both sides of the bottom of the pressing plate 2, the pressing plate 2 can move more smoothly and the force is balanced during the up and down movement. Moreover, it can also make the pressing plate 2 have a more reliable pressing effect on the workpiece to be welded. Of course, only one driving mechanism 3 can also be arranged at the bottom of each pressing plate 2. At this time, preferably, the driving mechanism 3 is arranged in the middle of the bottom of the pressing plate 2 to facilitate driving the pressing plate 2 to move more smoothly.

[0042] Embodiment 3

[0043] This embodiment is another embodiment of a planar welding fixture. This embodiment is similar to Embodiment 1, but the difference is that this embodiment is a further refinement of Embodiment 2. Among them, the number of component pressing plates 2 is 2, the number of handles 9 is 4, the number of cylinders is 4, and the number of throttle valves 6 is 8. Each cylinder corresponds to 2 throttle valves 6. The throttle valve 6 adjusts the flow rate of the fluid by changing the opening of the valve. During the use and debugging process, the opening of the valve can be manually adjusted to ensure that the pressing plates 2 move up and down simultaneously;

[0044] The number of fixing plates 8 is 2, and the two-position five-way hand-operated valve is used as the reversing valve 5, and the number is 2, and the rest are all 1. The three-position five-way hand-operated valve is a common pneumatic control valve, mainly used to control the gas flow direction and the flow direction of the cylinder, so as to change the movement direction of the cylinder.

[0045] Mechanical part:

[0046] The pressing plate 2 is respectively provided with 4 oblong counterbores with a diameter of 5.2 mm, and there are 2 adjusting counterbores with a length of 115 mm, a width of 38 mm and a depth of 11 mm on the left and right of the back. The oblong counterbores are connected and fixed to the cylinder by a threaded connection method.

[0047] The bottom plate 4 is respectively provided with 4 through holes with a length of 92 mm and a width of 42 mm. The front side is provided with an inflation groove 11 with a length of 380 mm, a width of 15 mm and a depth of 14.5 mm. Four M8 threaded holes are respectively provided on the four side surfaces of the bottom plate 4 to connect and fix the handle 9 through a threaded connection method. At the same time, there is also a through M12 threaded hole passing through the inflation groove 11 to connect and install the throttle valve through a threaded connection method. Eight M6 threaded holes are respectively provided on the back surface of the bottom plate 4 to connect and fix the support base 1 through a threaded connection method. The support base 1 includes a base 12 and a frame 13. The frame 13 is provided with 8 M5 threaded holes to connect and fix the fixing plate 8 through a threaded connection method.

[0048] The support base 1 is formed by welding and processing a 20 square tube, with dimensions of 400 mm in length, 320 mm in width and 160 mm in height. The top surface and the bottom surface of the support base 1 are respectively provided with 8 oblong through holes with a diameter of 6.2 mm. Among them, the oblong through holes on the top surface connect and fix the bottom plate 4 through a threaded connection method, and the oblong through holes on the bottom surface are used to fix with the welding equipment through a threaded connection method. At the same time, 4 M5 threaded holes are also provided on the front surface of the support base 1 to connect and fix with the bottom plate 4 through a threaded connection method.

[0049] The structure of the fixing plate 8 is in an L shape. Among them, 2 M5 through threaded holes are respectively provided on the long sides of the L shape to connect and fix the air cylinder through a threaded connection method, and M5 cylinder head socket head cap screws are respectively provided on the short sides of the L shape to connect and fix the bottom plate 4 through a threaded connection method.

[0050] The base 12 is respectively provided with 4 through holes with a diameter of 5.2 mm to connect and fix the frame 13 through a threaded connection method. At the same time, there are also 2 through holes with a diameter of 14.5 mm and 2 through holes with a diameter of 6.2 mm to install and fix the two-position five-way hand-operated valve and the pressure reducing valve 7 respectively through a bolt connection method.

[0051] Pneumatic part: In the device of the present utility model, the pressure reducing valve 7, the two-position five-way hand-operated valve, the air cylinder, the throttle valve, and the pressure reducing valve 7 constitute the pneumatic part of the device. During the use process, compressed air flows through the pressure reducing valve 7.

[0052] The flow direction of the compressed air is manually controlled by the two-position five-way hand-operated valve and flows to the throttle valve, thereby controlling the movement of the air cylinder. One two-position five-way hand-operated valve controls the operation of 2 air cylinders respectively, and among them, the 2 air cylinders of the same pressing plate 2 are in a group.

[0053] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A flat welding fixture, characterized in that: include The support base (1) is provided with a hollow cavity for mounting and supporting various components, and the support base (1) is provided with a gas filling groove (11) for filling with protective gas; A pressing plate (2) for pressing the workpiece to be welded, wherein the pressing plate (2) is located above the supporting seat (1); The driving mechanism (3) is used to drive the pressing plate (2) to press or release the workpiece to be welded. The driving mechanism (3) is installed in the hollow cavity of the support seat (1) and is connected to the bottom of the pressing plate (2).

2. The flat welding fixture according to claim 1, characterized in that: There are at least two pressing plates (2), and the two pressing plates (2) are respectively located on both sides of the inflation groove (11), and a welding space is formed between the two pressing plates (2) and above the inflation groove (11).

3. The flat welding fixture according to claim 2, characterized in that: There are multiple drive mechanisms (3), and both sides of the bottom of each pressing plate (2) are provided with a drive mechanism (3).

4. The flat welding fixture according to claim 3, characterized in that: It also includes a bottom plate (4), which is mounted on the top of the support seat (1) and is arranged opposite to the pressing plate (2); the driving mechanism (3) passes through the bottom plate (4) and is connected to the pressing plate (2); and the inflation groove (11) is arranged through the bottom plate (4).

5. The flat welding fixture according to any one of claims 1 to 4, characterized in that: The pressing plate (2) is provided with an inclined guide structure (21) on the side close to the inflation groove (11).

6. The flat welding fixture according to claim 1, characterized in that: It also includes a gas source, which is in communication with the gas filling groove (11) and is used to provide protective gas to the gas filling groove (11).

7. The flat welding fixture according to claim 1, characterized in that: The driving mechanism (3) is a cylinder, and further comprises a reversing valve (5), a throttle valve (6), and a pressure reducing valve (7) all of which are connected to the cylinder.

8. The flat welding fixture according to claim 1, characterized in that: It also comprises a fixing plate (8), wherein the fixing plate (8) is mounted in the hollow cavity of the supporting seat (1), and the driving mechanism (3) is mounted on the fixing plate (8).

9. The flat welding fixture according to claim 1, characterized in that: It also comprises a plurality of handles (9), wherein the plurality of handles (9) are respectively mounted on the circumferential outer side of the support seat (1).

10. The flat welding fixture according to claim 1, characterized in that: The protective gas is an inert gas.

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