CN209021468U - A multifunctional backing plate for welding and auxiliary welding system - Google Patents

Abstract

The utility model relates to a kind of welding multi-functional tieplate and auxiliary welding systems; wherein; the multi-functional tieplate; it can be not only used for before welding preheating welded piece; it can be used in the welding process radiating to welded piece again, it may also be used for provide gas shield to welded piece in the welding process；Multi-functional tieplate provided by the utility model, compact-sized, vdiverse in function, versatility is good, applied widely, the drawbacks of can effectively avoid in the prior art.

Description

A multifunctional backing plate for welding and auxiliary welding system

technical field

The utility model relates to the technical field of welding equipment, in particular to a multifunctional backing plate for welding and an auxiliary welding system.

Background technique

Welding is a common process in the industry. In the prior art, during welding, it is usually necessary to place a backing plate under the workpiece.

For example, in the prior art, for the workpiece that needs to be preheated before welding, it usually needs to be heated by flame or resistance furnace and then transferred to the welding table for clamping. Transfer and clamping are very inconvenient. At this time, it is usually necessary to set a backing plate between the workpiece and the worktable to protect the worktable and support the workpiece; for workpieces with poor thermal conductivity or workpieces that require continuous welding for a long time, in order to prevent Severe overheating deformation and excessive thermal stress lead to thermal cracks in the weld, usually a copper backing plate is needed to dissipate heat; when welding active metal workpieces, the back of the weld is prone to oxidation, so it is usually necessary to pass the backing plate to the weld during welding. Shielding gas is delivered to the back of the weld.

However, in the prior art, the backing plate commonly used in the welding process usually has the drawbacks of single function and poor versatility.

Utility model content

In order to improve the deficiencies existing in the prior art, the technical scheme adopted in the present utility model is:

The utility model relates to a multifunctional backing plate for welding, which can be used not only to preheat the workpiece to be welded before welding, but also to dissipate heat to the workpiece to be welded during the welding process, and also to provide gas to the workpiece to be welded during the welding process. Protect.

Preferably, the multifunctional backing plate includes an upper backing plate and a lower backing plate, the upper backing plate is used for preheating the workpiece to be welded and used to provide gas protection for the back of the weld, and the lower backing plate is used for heat dissipation.

In one solution, the upper backing plate is provided with a gas protection tank and several heating elements, the gas protection tank is used for accommodating protective gas, and the heating elements are used for heating the upper backing plate. So as to realize the heating of the workpiece to be welded.

Optionally, the gas protection groove includes a vent hole and a notch, one end of the vent hole is used to connect the air intake pipe, the vent hole penetrates both ends of the upper backing plate, the notch penetrates both ends of the upper backing plate, and is located at the upper backing plate. The ventilation hole and the upper surface of the upper backing plate are communicated along the length direction of the ventilation hole.

Preferably, the ventilation holes are circular holes.

Further, one or both ends of the vent hole is provided with an inner thread, and the inner thread is used for threaded connection. Even if the inlet pipe and the gas protection tank are connected by thread.

Preferably, the upper backing plate is provided with a plurality of through holes, the through holes are respectively arranged on both sides of the gas protection tank, and the through holes are used for accommodating the heating element. That is, the heating element is arranged in the through hole.

Optionally, the heating element is a resistance wire.

Preferably, the upper backing plate and the lower backing plate are both rectangular flat plates.

In one solution, the lower backing plate is provided with a groove, one end of the lower backing plate is provided with a water inlet, and the other end is provided with a water outlet, the water inlet and the water outlet are respectively communicated with the groove, and the water inlet and the water outlet are respectively connected to the groove. The water outlets are respectively used for connecting pipes, the lower backing plate is connected with the upper backing plate, and the groove is closed by the upper backing plate, and the groove is used for accommodating cooling water.

Preferably, the water inlet and/or the water outlet are provided with internal threads, and the internal threads are used for threaded connection.

Preferably, the upper backing plate and the lower backing plate are made of copper plates.

An auxiliary welding system includes a protective gas cylinder, a circulating pump, a water tank and the aforementioned multifunctional backing plate. The water inlet, the circulating pump, the water tank and the water outlet are sequentially connected through pipes to form a circulating loop, and the heating elements are respectively connected in parallel with the power supply.

Compared with the prior art, using the multifunctional backing plate for welding and the auxiliary welding system provided by the present utility model has the following beneficial effects:

1. The multifunctional backing plate has compact structure, various functions, good versatility and wide application range, which can effectively avoid the disadvantages of the existing technology.

2. This multifunctional backing plate has built-in heating elements, which can preheat the workpiece to be welded, especially suitable for the welded workpiece that needs to be preheated before welding, which can reduce the need for resistance furnace or flame heating before transferring the workpiece. The process of clamping on the workbench is very convenient and can effectively improve work efficiency.

3. This multifunctional backing plate has a built-in circulating water cooling device, which can be forced to dissipate heat. It is especially suitable for workpieces with poor thermal conductivity or workpieces that require continuous welding for a long time. This multifunctional backing plate can play a good role in the welding process. The heat dissipation effect can prevent the workpiece to be welded and the worktable from overheating, resulting in serious deformation of the workpiece to be welded, hot cracks and other disadvantages, which can facilitate continuous welding and obtain high-quality welds.

4. This multifunctional backing plate can provide gas protection for the back of the weld during the welding process, especially suitable for gas shielded welding of active metal workpieces.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an upper backing plate in a multifunctional backing plate for welding provided in Embodiment 1 of the present invention.

FIG. 2 is a front view of FIG. 1 .

FIG. 3 is a schematic structural diagram of an upper backing plate provided in FIG. 1 after an air intake pipe is provided.

FIG. 4 is a schematic structural diagram of the upper backing plate provided in FIG. 1 when a resistance wire is provided.

5 is a schematic structural diagram of a lower backing plate in a multifunctional backing plate for welding provided in Embodiment 1 of the present invention.

FIG. 6 is a schematic structural diagram of the lower backing plate provided in FIG. 5 , after the water inlet and the water outlet are respectively provided with pipes.

FIG. 7 is a schematic diagram of an upper backing board and a lower backing board in a multifunctional backing board for welding provided in Embodiment 1 of the present invention.

FIG. 8 is a schematic view after the assembly of FIG. 7 is completed.

FIG. 9 is a schematic structural diagram of an auxiliary welding system provided in Embodiment 2 of the present invention.

Description of the marks in the figure

Multifunctional backing plate 101,

Upper backing plate 201, gas protection groove 202, vent hole 203, notch 204, through hole 205, resistance wire 206, air inlet pipe 207, lead wire 208, power supply 209,

Lower backing plate 301, groove 302, water inlet 303, water outlet 304, pipeline 305,

Protective gas cylinder 401, circulating pump 402, water tank 403.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. . The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

The utility model provides a multifunctional backing plate for welding, which can be used not only for preheating the workpiece to be welded before welding, but also for dissipating heat from the workpiece to be welded during the welding process, and also for use in the welding process. Provide gas protection to the welded workpiece during the process.

For the welded workpiece that needs to be preheated before welding, it can be directly placed on the multi-functional backing plate, and then fixed on the welding table for direct preheating, which reduces the need for resistance furnace or flame heating before transferring the workpiece. The process of clamping on the workbench is very convenient and can effectively improve work efficiency;

For workpieces with poor thermal conductivity or workpieces that require continuous welding for a long time, this multi-functional backing plate can play a good heat dissipation effect during the welding process, thereby preventing the workpiece to be welded and the worktable from overheating, resulting in serious deformation of the workpiece to be welded. , produce hot cracks and other drawbacks, so that continuous welding can be effectively achieved and high-quality welds can be obtained;

When the workpiece to be welded is an active metal, the back of the weld is prone to oxidation, so during welding, the multifunctional backing plate can deliver protective gas to the back of the weld, so as to easily realize the function of gas protection for the back of the active metal.

Example 1

The multi-functional backing plate for welding provided in this embodiment 1 includes an upper backing plate 201 and a lower backing plate 301. The lower backing plate 301 is arranged below the upper backing plate 201 and is connected with the upper backing plate 201 as a whole. The upper backing plate 201 can be used to preheat the workpiece to be welded, and can also be used to provide gas protection for the back of the weld during the welding process. The workpiece to be welded and the workbench are overheated.

In one solution, the upper backing plate 201 is provided with a gas protection tank 202 and several heating elements, and the gas protection tank 202 is used to accommodate the protection gas; in this embodiment, the gas protection tank 202 includes a ventilation hole 203 and a slot 204, As shown in FIG. 1 and FIG. 2 , the vent hole 203 is a circular hole (cylindrical) so as to connect the air intake pipe 207, and the vent hole 203 penetrates both ends of the upper backing plate 201; meanwhile, the notch 204 also penetrates the upper backing board At both ends of 201, and along the length direction of the vent hole 203, the notch 204 can communicate with the vent hole 203 shown and the upper surface of the upper backing plate 201, as shown in FIG. 1 or FIG. 2, in the process of gas shielded welding , the air inlet pipe 207 for conveying the protective gas can be connected to either end of the vent hole 203, as shown in FIG. It overflows the upper surface of the upper backing plate 201 to provide gas protection to the back of the welding seam of the workpiece to be welded above the upper surface of the upper backing plate 201 , which is especially suitable for welding active metal workpieces.

In order to facilitate the connection of the air inlet pipe 207, in one solution, one end of the gas shielding groove 202 can be provided with an inner thread, and the end of the air inlet pipe 207 is provided with an outer thread. The communication between the air inlet pipe 207 and the gas protection tank 202 can be realized conveniently and quickly.

When using the multifunctional backing plate, the workpiece to be welded is usually arranged above the upper backing plate 201, and the welding seam of the workpiece to be welded corresponds to the gas shielding groove 202 below; therefore, preferably, the gas shielding groove 202 is arranged on the upper layer at the middle position of the backing plate 201 .

The heating element is used to heat the upper backing plate 201 when needed, so as to realize the heating of the workpiece to be welded; in this embodiment, the upper backing plate 201 is provided with a number of through holes 205, as shown in FIG. 1 or FIG. 2 or FIG. 3 . As shown, the through holes 205 are respectively arranged on both sides of the gas protection tank 202 , and the heating elements are respectively arranged in the corresponding through holes 205 .

The heating element can heat the upper backing plate 201, and the workpiece to be welded is in contact with the upper backing plate 201, so the workpiece to be welded can be indirectly heated (preheated). The resistance wire 206 (or called heating wire), the two ends of the resistance wire 206 in each through hole 205 are connected in parallel to the power supply 209 through the wire 208 respectively, so as to realize the heating function by utilizing the characteristic of the resistance wire 206 to generate heat in the power-on state.

In actual production and manufacturing, the number of through holes 205 on the upper backing plate 201 can be determined according to actual needs. As shown in FIG. 4 , in this embodiment, the upper backing plate 201 is provided with four through holes 205, and the gas Two through holes 205 are respectively disposed on both sides of the protection groove 202 , and a resistance wire 206 is respectively disposed in each through hole 205 .

In one solution, the lower backing plate 301 is provided with a groove 302, the groove 302 is used to accommodate cooling water (or called circulating water, cooling liquid, etc.), one end of the lower backing plate 301 is provided with a water inlet 303, and the other end is provided with a water inlet 303. There is a water outlet 304, as shown in FIG. 5, the water inlet 303 and the water outlet 304 are respectively communicated with the groove 302, and the water inlet 303 and the water outlet 304 are respectively used to connect the pipeline 305, as shown in FIG. 6, the lower layer The backing plate 301 is connected to the upper backing plate 201, and the groove 302 is closed by the upper backing plate 201, as shown in Fig. 7 and Fig. 8; when using this multi-functional backing plate to assist in welding, the cooling water can pass through the water inlet 303 enters the groove 302 and can accumulate in the groove 302. The heat generated by the welding process is transferred from the upper backing plate 201 to the cooling water in the groove 302, and is taken away from the backing plate by the cooling water flowing out from the water outlet 304. ; In this scheme, the use of circulating cooling water to force the backing plate can effectively prevent the workpiece to be welded and the worktable from overheating, so as to achieve a good heat dissipation effect, especially suitable for welding workpieces with poor thermal conductivity or long-term continuous welding Welded workpiece.

Optionally, the connection between the lower backing plate 301 and the upper backing plate 201 may be welded.

In order to facilitate the connection, in one solution, the water inlet 303 and the water outlet 304 can be respectively provided with internal threads, and the pipes 305 used to connect the water inlet 303 and the water outlet 304 are provided with external threads. In cooperation with the inner thread, the communication between the pipeline 305 and the water inlet 303 and the pipeline 305 and the water outlet 304 can be realized conveniently and quickly.

Optionally, as shown in FIG. 7 or FIG. 8 , in this embodiment, the upper backing plate 201 and the lower backing plate 301 are rectangular flat plates with regular shapes, which are convenient for processing and for use with the workbench.

Further, in this embodiment, the upper backing plate 201 and the lower backing plate 301 can be made of copper plates respectively, and the copper plates have good heat transfer effect, which is convenient for the multi-functional backing plate to preheat or dissipate the heat of the workpiece to be welded. Can be transferred quickly.

Example 2

This embodiment provides an auxiliary welding system, including a protective gas cylinder 401, a circulating pump 402, a water tank 403, and the multifunctional backing plate provided in Embodiment 1, wherein the protective gas cylinder 401 is used to hold the protective gas, as shown in the figure 9, the protective gas cylinder 401 is connected to one end of the gas protection tank 202 through the air inlet pipe 207; the water tank 403 is used for containing cooling water, and the water inlet 303, the circulating pump 402, the water tank 403 and the water outlet 304 are connected in turn through the pipeline 305, which can be A circulating loop is formed, as shown in FIG. 9 , the cooling water can circulate in the circulating loop, so as to achieve a good forced cooling effect; the two ends of each heating element (resistance wire 206 is preferably used) are connected in parallel to the power supply 209 through wires 208 respectively. In a further solution, a distribution box is also included. At this time, both ends of each heating element (resistance wire 206 is preferably used) can be connected in parallel to the distribution box through wires 208, which facilitates centralized control and management.

In this embodiment, the circulating pump 402 is used to provide power for circulating cooling water, and the circulating pump 402 is a commonly used power device in the prior art, which will not be repeated here.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Replacement should be covered within the protection scope of the present invention.

Claims (7)

1. a kind of welding multi-functional tieplate, which is characterized in that including upper layer backing plate and lower layer's backing plate, set in the upper layer backing plate It is equipped with gas shield slot and several heating elements, the gas shield slot accommodates protective gas, and the heating element is for heating Upper layer backing plate；The gas shield slot includes venthole and notch, and one end of venthole connects air inlet pipe, and venthole runs through upper layer The both ends of backing plate, the notch run through the both ends of upper layer backing plate, and the length direction along venthole be connected to the venthole with The upper surface of the upper layer backing plate.

2. welding multi-functional tieplate according to claim 1, which is characterized in that the upper layer backing plate is provided with several logical Hole, the through-hole are separately positioned on the two sides of the gas shield slot, and through-hole accommodates the heating element.

3. welding multi-functional tieplate according to claim 2, which is characterized in that the heating element is resistance wire.

4. welding multi-functional tieplate according to claim 1 to 3, which is characterized in that lower layer's backing plate is provided with Groove, one end of lower layer's backing plate are provided with water inlet, and the other end is provided with water outlet, the inlet and outlet respectively with institute Groove connection is stated, inlet and outlet are separately connected pipeline, and lower layer's backing plate is connected with upper layer backing plate, and seals by upper layer backing plate The groove is closed, groove accommodates cooling water.

5. welding multi-functional tieplate according to claim 4, which is characterized in that the water inlet and/or the water outlet Internal screw thread is provided in mouthful.

6. welding multi-functional tieplate according to claim 4, which is characterized in that the upper layer backing plate and lower layer's backing plate are adopted It is made of copper sheet.

7. a kind of auxiliary welding system, which is characterized in that including protecting gas cylinder, circulating pump, water tank and claim 4-6 are any The multi-functional tieplate, the protection gas cylinder are connected by air inlet pipe with one end of the gas shield slot, and cylinder storage is protected Protective gas, the water inlet, circulating pump, water tank and water outlet pass sequentially through pipeline and are connected, and constitute circulation loop, institute It states each heating element and is parallel to power supply respectively.