Jig for assisting in pressing a workpiece to be welded

Abstract

A jig for assisting in pressing objects to be welded, comprising a base for carrying the objects to be welded; a plurality of air cylinders arranged in pairs on the base; a pressure head connected to the piston rod of each air cylinder, a pair of air cylinders driving a corresponding pair of pressure heads to apply pressure to the objects to be welded from opposite sides, enabling the objects to be welded to be pressed together; a busbar arranged on the base, the busbar having a first gas passage built-in, the first gas passage having at least one first tapping port formed on the busbar, the gas passage of each air cylinder being connected to the first tapping port, and the first gas passage further having a total cylinder gas inlet port and a total cylinder gas outlet port formed on the busbar. The speed regulating valve can adjust the gas flow rate in each gas passage, thereby controlling the pressing down and lifting speed of the pressure head connected to the piston rod, improving the synchronization of the pressing down and lifting of the plurality of pressure heads, and reducing the situation of applying biased pressure to the objects to be welded due to the asynchronization (too fast or too slow) of the movement of the pressure heads, resulting in poor subsequent welding.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary fixtures for welding, and in particular to a fixture for assisting in pressing together the workpiece to be welded during the welding process. Background Technology

[0002] As a key component for image acquisition, the quality and stability of the camera directly affect the imaging effect and overall performance of the device. In the manufacturing process of some cameras, welding is required between the camera and the bracket.

[0003] Traditional welding methods mainly include resistance welding and arc welding. Resistance welding typically requires high contact pressure and current, which can easily lead to camera deformation and thermal damage, affecting the camera's accuracy and optical performance. Arc welding usually involves high temperatures and a large heat-affected zone, which can easily damage the internal structure of the camera and generate residual welding stress, reducing the strength and reliability of the welded area.

[0004] With the continuous development of laser technology, laser welding has gradually been applied in the field of camera manufacturing. However, when using laser welding to weld cameras and brackets with complex shapes and small dimensions, it is usually necessary to use a fixture to position and press them together before welding. Otherwise, it may lead to over- or under-welding, affecting the welding quality.

[0005] like Figure 1 As shown, the existing manual pressing fixture uses a rotatable handle to drive the pressing head to press the camera and the bracket at a point. For most binocular cameras that are rectangular in shape, the pressing area is too small, the pressure on the camera and the bracket is uneven, and it is difficult to control the gap after welding within 0.1mm. The welding is prone to failure due to the inability to press tightly.

[0006] like Figure 2 As shown, existing pneumatic pressing fixtures use a cylinder (which is obstructed) to drive the pressure head for single-sided pressing of the camera and bracket. For a binocular camera with a narrow bracket as shown in the figure, this can easily cause the other side to lift up (or deflect), leading to subsequent welding failure. Furthermore, in existing pneumatic pressing fixtures, each cylinder's air path is independently connected to an external air source and exhaust pipe, and the cylinder sensor wiring is also independently connected to an external socket for electrical / data connections. This results in a very cluttered overall fixture layout, making it prone to failure during maintenance due to incorrect air or wiring connections. Utility Model Content

[0007] In view of the deficiencies existing in the prior art, the present invention provides a fixture for assisting in pressing together objects to be welded, comprising:

[0008] The substrate used to support the workpiece to be welded;

[0009] Multiple cylinders are arranged in pairs on the substrate;

[0010] A pressure head connected to the piston rod of each of the cylinders, a pair of cylinders driving a corresponding pair of pressure heads to apply pressure to the workpiece from opposite sides, so that the workpiece can be welded together by pressing them together; and

[0011] A manifold plate is disposed on the substrate. The manifold plate has a built-in first gas channel. The first gas channel forms at least one first branch interface on the manifold plate. The gas passage of each cylinder is connected to the first branch interface. The first gas channel also forms a main cylinder inlet and a main cylinder exhaust port on the manifold plate.

[0012] In some embodiments of this utility model, the air passage of each cylinder is connected to the first sub-port via a speed regulating valve, so that the air pressure in each cylinder can be adjusted individually.

[0013] In some embodiments of this utility model, the pressure head includes a head for pressing the objects to be welded together; a rod-shaped tail connected at one end to the head and pivotally connected at the other end to the base; and an intermediate connecting rod pivotally connected at one end to the rod-shaped tail and pivotally connected at the other end to the piston rod of the cylinder.

[0014] In some embodiments of this utility model, the head is made of polyurethane material with a Shore hardness of 70.

[0015] In some embodiments of this utility model, the fixture for assisting in pressing the workpieces to be welded includes: a blowpipe with a blowhole disposed on the substrate for blowing protective gas onto the workpieces to be welded that are pressed together.

[0016] In some embodiments of this utility model, the blow tube is threadedly connected to the base body, and rotating the blow tube can adjust the orientation and height of the air hole.

[0017] In some embodiments of this utility model, the blow tube has multiple components, the manifold has a built-in second gas channel, the second gas channel forms at least one second branch interface on the manifold, each blow tube is connected to the second branch interface, and the second gas channel also forms a protective gas main inlet on the manifold.

[0018] In some embodiments of this utility model, the fixture for assisting in pressing the objects to be welded includes a robotic arm disposed on the substrate or an external device. The robotic arm holds a blow tube and is used to blow protective gas onto the objects to be welded that are pressed together.

[0019] In some embodiments of this utility model, the fixture for assisting in pressing the workpiece to be welded includes a cylinder sensor disposed on each of the cylinders for obtaining the piston rod movement position of the corresponding cylinder, and the circuits of the plurality of cylinder sensors are connected in parallel to a multi-core plug, the multi-core plug being used to connect to a multi-core socket of an external device.

[0020] In some embodiments of this utility model, the fixture for assisting in pressing the workpiece to be welded includes a base for fixed connection with an external device, the base having a threaded hole, and the base having a threaded hole or through hole at a corresponding position, the base being connected to the base by a hand-tightening screw.

[0021] In some embodiments of this utility model, one of the base and the base is provided with a plurality of positioning pins of different shapes and / or sizes, and the other is provided with a plurality of positioning holes that can respectively match the plurality of positioning pins, so that the base can only be installed on the base in a predetermined direction.

[0022] In the fixture for assisting in pressing the workpiece to be welded provided by this utility model, the speed regulating valve can adjust the gas flow rate in each air path, thereby individually controlling the movement speed of the piston rod of each cylinder, and thus controlling the pressing and lifting speed of the pressure head connected to the piston rod, improving the synchronization of pressing and lifting of multiple pressure heads, and reducing the situation where bias pressure is applied to the workpiece to be welded due to asynchronous movement of the pressure heads (too fast or too slow), resulting in poor subsequent welding. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a manual pressing fixture in the prior art;

[0024] Figure 2 This is a schematic diagram of the structure of a pneumatic pressing fixture in the prior art;

[0025] Figure 3 A schematic diagram of the structure of a fixture for assisting in pressing together objects to be welded, provided in an embodiment of the present invention (the base and the base are separated).

[0026] Figure 4 for Figure 3 Assembly diagram (front) of the jig shown;

[0027] Figure 5 for Figure 3 Assembly diagram of the jig shown (reverse side);

[0028] Figure 6 for Figure 3 The diagram shows the structure of the fixture after the pressure head has been removed.

[0029] Figure 7 for Figure 3 A schematic diagram of the fixture after the base has been removed;

[0030] Figure 8 for Figure 3 A schematic diagram of the gas passage within the manifold of the fixture shown;

[0031] Figure 9a for Figure 3 A schematic diagram of the pressure head of the fixture shown in the figure;

[0032] Figure 9b This is a schematic diagram showing the connection between the pressure head and the cylinder;

[0033] Figure 10 for Figure 3 A schematic diagram of the blow tube of the fixture shown in the figure;

[0034] Figure 11 for Figure 3 The diagram shows the structure of the fixture after the busbar has been removed;

[0035] Figure 12 for Figure 3 A schematic diagram of the base of the fixture shown;

[0036] Figure 13 A schematic diagram showing how a robotic arm holds the blow tube;

[0037] Figure 14 A schematic diagram showing a robotic arm, mounted on an external device, holding a blow tube to blow air onto a fixture.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100 is a fixture used to assist in pressing together the workpiece to be welded.

[0040] 10; 11; 12; 10;

[0041] Cylinder 20; Piston rod 21; Air passage 22; Cylinder sensor 23; Cylinder extension sensor 23a; Cylinder retraction sensor 23b; Multi-pin connector 24;

[0042] 30; head; 31; rod-shaped tail; 32; intermediate connecting rod; 33; connecting plate; 34; through hole; 35;

[0043] Manifold 40; First gas passage 41; First branch interface 42; Main cylinder inlet 43; Main cylinder exhaust port 44; Speed ​​control valve 45; Second gas passage 46; Second branch interface 47; Protective gas main inlet 48; Extension pipe 49a; T-connector 49b;

[0044] 50; air hole 51; thread 52; nut 53;

[0045] Base 60; Hollowed-out design 61; Frame 62;

[0046] Hand-tightening screws 70;

[0047] Positioning pin 80;

[0048] Positioning hole 90;

[0049] Camera A; bracket B; robotic arm C; multi-pin socket D. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0051] like Figure 3-8 As shown, one embodiment of the present invention provides a fixture 100 for assisting in pressing together objects to be welded, including a base 10 for supporting the objects to be welded, a plurality of cylinders 20 arranged in pairs on the base 10, a pressure head 30 connected to the piston rod 21 of each cylinder 20, a pair of cylinders 20 driving a corresponding pair of pressure heads 30 to apply pressure to the objects to be welded from opposite sides, so that the objects to be welded can be pressed together and welded, and a manifold 40 arranged on the base 10, the manifold 40 having a first gas channel 41 built in, the first gas channel 41 having at least one first branch interface 42 formed on the manifold 40, the gas passage 22 of each cylinder 20 being connected to the first branch interface 42, the first gas channel 41 also having a main cylinder inlet 43 and a main cylinder exhaust port 44 formed on the manifold 40.

[0052] For example, the objects to be welded can be camera A and bracket B. For instance, two cameras A, left and right, are pressed together on bracket B and welded together to form a binocular camera.

[0053] In other embodiments, the objects to be welded can also be radar lenses and brackets. For example, the radar's transmitting and receiving lenses are pressed onto a bracket and welded together to form a radar module.

[0054] The following embodiments use camera A and bracket B as examples for illustration.

[0055] For example, the cylinder 20 and the manifold 40 can be installed on the base 10 by means of screw connection, bolt connection, bonding, plug-in connection, etc.

[0056] For example, four cylinders 20 are provided, driving a pair of pressure heads 30 in pairs from opposite sides (e.g., Figure 4 The upper and lower sides (as shown) press the camera A and bracket B together. The cylinder 20 can be a CDQSB25-25D model (25mm bore, 25mm stroke, SMC brand). At an intake pressure of 0.6MPa, a single cylinder 20 can provide a pressure of over 200N. Each cylinder 20 includes two air passages 22 (intake and outlet air passages), and the manifold 40 has two corresponding first branch interfaces 42. Four cylinders 20 correspond to eight first branch interfaces 42.

[0057] In other embodiments, a T-shaped three-way pipe, a cross-shaped four-way pipe, or the like can be used to connect the air passage 22, thereby reducing the number of first branch ports 42.

[0058] For example, the base 10 may be provided with a positioning block 11 to help position the bracket B, so as to prevent the camera A from moving during the pressing process with the bracket B. Those skilled in the art should understand that the fixture 100 used to assist in pressing the objects to be welded can press the objects to be welded (e.g., camera A and bracket B) from opposite sides. For most objects to be welded that are rectangular in shape (e.g., binocular cameras), it can prevent the other side from lifting up and causing the joint failure. The gap after the objects to be welded are pressed can be strictly controlled within 0.1 mm, reducing the welding defect rate caused by this situation from more than 10% to less than 0.1%. In addition, the air passages 22 of all cylinders 20 are connected to the manifold 40, and then connected to an external air source pipeline through a main cylinder air inlet 43 on the manifold 40, and a main cylinder exhaust port 44 is connected to an external exhaust pipeline. During maintenance, it is generally only necessary to disconnect the external air supply line connected to the main cylinder inlet 43 and the external exhaust line connected to the main cylinder outlet 44, without removing the air passage 22 of each cylinder 20. This not only reduces maintenance time but also makes it less likely to cause air passage connection errors.

[0059] Special reference Figure 7 As shown, further, the air passage 22 of each cylinder 20 is connected to the first interface 42 through the speed control valve 45, so that the air pressure in each cylinder 20 can be adjusted individually.

[0060] Those skilled in the art should understand that the speed control valve 45 can adjust the gas flow rate in each air passage 22, thereby individually controlling the movement speed of the piston rod 21 of each cylinder 20, and thus controlling the pressing and lifting speed of the pressure head 30 connected to the piston rod 21, improving the synchronicity of the pressing and lifting of multiple pressure heads 30, and reducing the situation where bias pressure is applied to the workpiece to be welded due to asynchronous movement of the pressure head 30 (too fast or too slow speed), resulting in poor subsequent welding.

[0061] Combination Figure 9a and 9b As shown, the pressure head 30 further includes a head 31 for pressing the objects to be welded together; a rod-shaped tail 32 connected at one end to the head 31 and pivotally connected at the other end to the base 30; and an intermediate connecting rod 33 pivotally connected at one end to the rod-shaped tail 32 and pivotally connected at the other end to the piston rod 21 of the cylinder 20.

[0062] Furthermore, the head is made of polyurethane (polyurethane) material with a Shore hardness of 70.

[0063] For example, the pressure head 30 is disposed on the front side of the base 10 (e.g., Figure 4 (as shown on one side), the cylinder 20 is located on the opposite side of the base 10 (e.g. Figure 5 As shown on one side, a clearance hole 12 is provided on the base 10 so that the piston rod 21 of the cylinder 20 can pass through the clearance hole 12 and connect to the pressure head 30. The pressure head 30 may also include a connecting plate 34 with a through hole 35. The connecting plate 34 is fixedly connected to the base 10, and the through hole 35 and the clearance hole 12 are positioned accordingly. The piston rod 21 passes through the clearance hole 12 and the through hole 35 in sequence and then connects to the pressure head 30. The rod-shaped tail 32 of the pressure head 30 is connected to the connecting plate 34 by a pivot. One end of the intermediate connecting rod 33 is connected to the rod-shaped tail 32 by a pivot, and the other end of the intermediate connecting rod 33 is connected to the protruding end of the piston rod 21 by a pivot. That is to say, the piston rod 21, the rod-shaped tail 32, the intermediate connecting rod 33 and the connecting plate 34 form a mechanism similar to a linkage-lever, so that the pressure head 30 can be vertically pressed down and lifted under the drive of the piston rod 21.

[0064] For example, the head 31 can be connected to the rod-shaped tail 32 by screws, bolts, plugs, etc., and the head 31 can be designed to conform to the shape and thickness of the object to be welded, so that the corresponding head 31 can be replaced according to different objects to be welded, thereby improving the applicability of the fixture and helping to reduce processing costs.

[0065] Those skilled in the art should understand that the linkage-lever mechanism composed of piston rod 21, rod-shaped tail 32, intermediate connecting rod 33, and connecting plate 34 (which can also be considered as base 10) is redesigned based on the selected cylinder 20, optimizing the lever arm ratio from the original 1:4 to approximately 1:2 to ensure a pressing force ≥200N. On the other hand, due to the different shapes and thicknesses of the materials to be welded, the contour head 31 can be replaced independently without replacing other components. Furthermore, the contour head 31 uses a polyurethane material with a Shore hardness of approximately 70 degrees, which, through slight compression deformation of the soft material, better ensures pressing of the materials to be welded from the opposite side.

[0066] Combination Figure 10As shown, the jig 100 for assisting in pressing the workpieces to be welded further includes a blow tube 50 with a blow hole 51 disposed on the base 10 for blowing protective gas onto the workpieces to be welded that are pressed together.

[0067] Furthermore, the blow tube 50 is threadedly connected to the base 10, and rotating the blow tube 50 can adjust the orientation and height of the air hole 51.

[0068] Furthermore, the blow-off tube 50 has multiple parts, and the manifold 40 has a built-in second gas channel 46. The second gas channel 46 forms at least one second branch interface 47 on the manifold 40. Each blow-off tube 50 is connected to the second branch interface 47. The second gas channel 46 also forms a protective gas main inlet 48 on the manifold 40.

[0069] For example, the protective gas can be an inert gas, such as nitrogen.

[0070] For example, the second gas channel 46 is stacked with the first gas channel 41 inside the manifold 40, with the second gas channel 46 located below the first gas channel 41. There are eight blow-off tubes 50, with one blow-off tube 50 arranged on each side of each pressure head 30. The number of blow-off tubes 50 can be increased or decreased depending on the number of pressure heads 30. There are two second branch interfaces 47. Since the blow-off tubes 50 are far from the second branch interfaces 47, they are connected to the second branch interfaces 47 by extension tubes 49a, and then connected to the extension tubes 49a by "T"-shaped tee tubes 49b. The blow-off tubes 50 are connected to the "T"-shaped tee tubes 49b. When installation conditions permit, more second branch interfaces 47 can be provided, and the blow-off tubes 50 can be directly connected to the second branch interfaces 47, thus omitting the extension tubes 49a and tee tubes 49b.

[0071] Furthermore, combined Figure 7 As shown, the air path of the blow-off tube 50 can be connected to the second port 47 via a speed control valve, so that the air pressure inside the blow-off tube 50 can be regulated. For example, two blow-off tubes 50 connected to the same "T"-shaped tee tube 49b can be connected to the second port 47 via the same speed control valve, so that the air pressure inside the two blow-off tubes 50 can be regulated simultaneously.

[0072] Those skilled in the art should understand that the speed control valve can adjust the gas flow rate in the air path of the blow-off tube 50, thereby controlling the gas speed blown out by the blow-off tube 50, and thus achieving the expected blowing effect.

[0073] For example, the lower part of the blow tube 50 is provided with a thread 52, and the base 10 is provided with a matching threaded hole (not shown). The blow tube 50 is screwed onto the base 10 using the thread 52, and the orientation and height of the air hole 51 can be adjusted by controlling the screwing depth and angle. Alternatively, one or more nuts 53 can be installed on the lower thread 52 of the blow tube 50 before screwing the blow tube 50 onto the base 10, and the height of the air hole 51 can be limited by the thickness of the one or more nuts 53. The air hole 51 has a flared opening to increase the flow rate of the protective gas in the blow tube 50 at the air hole 51 and to increase the protective gas blowing range.

[0074] Combination Figure 13 As shown, alternatively, the jig 100 for assisting in pressing the objects to be welded includes a robotic arm C disposed on the base 10 or on an external device, the robotic arm C holding a blow tube 50 for blowing protective gas onto the objects to be welded that are pressed together.

[0075] For example, such as Figure 14 As shown, a robotic arm C is mounted on an external device, which allows for a greater range of motion compared to mounting the robotic arm C on the base 10. The robotic arm C holds a blowpipe 50 and blows protective gas onto the pressed workpieces during welding. The orientation and height of the blowpipe 50 can be flexibly changed as the welding point moves.

[0076] Those skilled in the art will understand that the workpieces to be welded are generally cast aluminum parts, which are prone to generating a large amount of weld slag, debris, and exhaust gas during laser welding, resulting in poor welding performance. By using a blower tube 50 to blow protective gas onto the welding area, the large amount of weld slag and debris generated during welding can be reduced, decreasing the welding defect rate caused by this by approximately 5%. Furthermore, the height and angle of the air blowing holes 51 on the blower tube 50 are adjustable, making it suitable for workpieces of different specifications. All blower tubes 50 are connected to the second gas channel 46 of the manifold 40, further simplifying the gas path, reducing maintenance time, and reducing the likelihood of gas path connection errors.

[0077] Combination Figure 11 As shown, the fixture 100 for assisting in pressing the workpiece to be welded may further include a cylinder sensor 23 disposed on each cylinder 20 for obtaining the movement position of the piston rod 21 of the corresponding cylinder 20, and the wiring of the multiple cylinder sensors 23 is connected in parallel to a multi-pin plug 24 for connecting to a multi-pin socket D of an external device.

[0078] For example, cylinder sensors 23 include a cylinder extension sensor 23a and a cylinder retraction sensor 23b disposed on cylinder 20. The wiring of the four cylinder extension sensors 23a of cylinders 20 is connected in parallel to a four-pin connector (the wiring is of different colors, such as red, blue, white, and black; the wiring may also be labeled with text, such as number 1, 2, 3, and 4). The wiring of the cylinder retraction sensor 23b is also connected in parallel to a four-pin connector (the wiring is of different colors, such as red, blue, white, and black; the wiring may also be labeled with text, such as number 1, 2, 3, and 4; wiring of the same color and / or the same number comes from the same cylinder sensor 23). External devices have two four-pin sockets. Each cylinder sensor 23 is individually labeled with text and color (combining multiple foolproof designs), making subsequent maintenance easier.

[0079] Those skilled in the art should understand that, during maintenance, in addition to disconnecting the external air supply line connected to the main cylinder inlet 43 and the external exhaust line connected to the main cylinder outlet 44 as described above, it is only necessary to separate the multi-pin plug 24 from the multi-pin socket D, without disconnecting the wiring of each cylinder sensor 23, thereby avoiding wiring errors and facilitating maintenance.

[0080] Combination Figure 12 As shown, the fixture 100 for assisting in pressing the workpiece to be welded further includes a base 60 for fixed connection with an external device. The base 60 has a threaded hole, and the corresponding position of the base 10 has a threaded hole or a through hole. The base 10 and the base 60 are connected by a hand screw 70.

[0081] Furthermore, one of the base 10 and the base 60 is provided with a plurality of positioning pins 80 of different shapes and / or sizes, and the other is provided with a plurality of positioning holes 90 that can respectively match the plurality of positioning pins 80, so that the base 10 can only be installed on the base 60 in a predetermined direction.

[0082] For example, the base 60 has a hollow 61 in the middle, and two circular positioning pins 80 (different diameters) of different sizes are provided on the frame 62 of the base 60. The base 10 has two positioning holes 90 of different sizes. The positioning pins 80 and positioning holes 90 are used to install the base 10 and the base 60 together in a predetermined direction (i.e., the positioning pins 80 and positioning holes 90 form a foolproof design). The cylinder 20 and the manifold 40 located on the back side of the base 10 are just accommodated in the hollow 61. The frame 62 of the base 60 is also provided with threaded holes, and the base 10 is provided with threaded holes or through holes. The base 10 and the base 60 are then fixed together with hand-tightened screws 70.

[0083] Those skilled in the art should understand that the cylinder 20, pressure head 30, manifold 40, and blowpipe 50 are all mounted on the base 10, forming an integrated module. When pressing and welding different specifications of workpieces, only the integrated module needs to be quickly replaced. The base 60 is used for fixed connection with external equipment. If the screw holes, positioning pins 80 (or positioning holes 90), etc. on the base 60 are worn or deformed, only the base 60 (the specifications of the base are the same) needs to be replaced, without affecting the integrated module, thereby saving maintenance time and reducing maintenance costs.

[0084] Specifically, first disconnect the external air supply line connected to the main cylinder inlet 43 of the manifold 40 and the external exhaust line connected to the main cylinder exhaust port 44. Then disconnect the multi-pin plug 24 from the multi-pin socket 61. Finally, tighten the hand screw 70 to separate the base 10 and the base 60, and remove the integrated module. Provide another integrated module and reverse the above steps to replace the integrated module. The replacement time for the integrated module can be controlled within fifteen minutes, which is more than 85% shorter than the previous two hours.

[0085] In summary, this utility model proposes a solution for assisting in laser welding of objects to be welded, particularly for laser welding of binocular camera brackets. Through the aforementioned detailed design, factories can achieve the goals of improving welding quality, enhancing stability, simplifying maintenance, and shortening changeover time when laser welding such binocular camera products.

[0086] In the description of this specification, the references to terms such as "certain embodiments," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0087] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not restrictive. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fixture for assisting in pressing together objects to be welded, characterized in that, include: The substrate used to support the work to be welded; Multiple cylinders are arranged in pairs on the substrate; A pressure head connected to the piston rod of each of the cylinders, a pair of cylinders driving a corresponding pair of pressure heads to apply pressure to the workpiece from opposite sides, so that the workpiece can be welded together by pressing them together; and A manifold plate is disposed on the substrate. The manifold plate has a built-in first gas channel. The first gas channel forms at least one first branch interface on the manifold plate. The gas passage of each cylinder is connected to the first branch interface. The first gas channel also forms a main cylinder inlet and a main cylinder exhaust port on the manifold plate.

2. The fixture for assisting in pressing together objects to be welded according to claim 1, characterized in that: The air passage of each cylinder is connected to the first sub-port via a speed control valve, so that the air pressure in each cylinder can be adjusted individually.

3. The fixture for assisting in pressing together objects to be welded according to claim 1, characterized in that, The pressure head includes: A head used to press the objects to be welded together; One end is connected to the head, and the other end is pivotally connected to the rod-shaped tail of the base; and One end is pivotally connected to the rod-shaped tail, and the other end is pivotally connected to the middle connector of the piston rod of the cylinder.

4. The fixture for assisting in pressing together objects to be welded according to claim 2, characterized in that: The head is made of polyurethane material with a Shore hardness of 70.

5. The fixture for assisting in pressing together objects to be welded according to claim 1, characterized in that, include: A blow-off tube with blowing holes, disposed on the substrate, is used to blow protective gas onto the objects to be welded that are pressed together.

6. The fixture for assisting in pressing together objects to be welded according to claim 5, characterized in that: The blow tube is threadedly connected to the base body, and rotating the blow tube can adjust the orientation and height of the air hole.

7. The fixture for assisting in pressing together objects to be welded, as described in claim 5, is characterized in that: The blow-off tubes are multiple in number, and the manifold has a built-in second gas channel. The second gas channel forms at least one second branch interface on the manifold. Each blow-off tube is connected to the second branch interface. The second gas channel also forms a protective gas main inlet on the manifold.

8. The fixture for assisting in pressing together objects to be welded according to claim 1, characterized in that, include: A robotic arm mounted on the substrate or an external device holds a blow tube and is used to blow protective gas onto the objects to be welded that are pressed together.

9. The fixture for assisting in pressing together objects to be welded according to claim 1, characterized in that, include: A cylinder sensor is installed on each of the cylinders to obtain the piston rod movement position of the corresponding cylinder. The circuits of the multiple cylinder sensors are connected in parallel to a multi-pin plug, which is used to connect to a multi-pin socket of an external device.

10. The fixture for assisting in pressing together objects to be welded according to claim 1, characterized in that, include: A base for fixed connection with external equipment, the base having a threaded hole, and the base having a corresponding threaded hole or through hole, the base being connected to the base by a hand-tightened screw.

11. The fixture for assisting in pressing together workpieces to be welded, as described in claim 9 or 10, characterized in that: The base and the base are provided with a plurality of positioning pins of different shapes and / or sizes, and the other side is provided with a plurality of positioning holes that can be matched with the plurality of positioning pins respectively, so that the base can only be installed on the base in a predetermined direction.

Images