Welding fixture

Abstract

The utility model relates to machine tool technical field discloses welding tool fixture, including work table, be provided with on the work table: front positioning group, have the front positioning mould that can go up and down activity;Rear positioning group, be located the rear of front positioning group, rear positioning group includes movable die, set up rear positioning mould and press mould on movable die, movable die can be close to or far from front positioning mould, form the pressure tank between rear positioning mould one side and press mould bottom side, press mould can be close to or far from rear positioning mould downwards, side positioning group has the close mould that can be close to or far from the front end of pressure tank, the utility model provides the compression force from the front, rear, lateral three directions to the part that workpiece needs to weld, greatly improves the precision of workpiece positioning and the compactness of workpiece welding part, thereby improves workpiece welding quality and stability.

Description

Technical Field

[0001] This utility model relates to the field of machine tool technology, and in particular to a welding fixture. Background Technology

[0002] When welding workpieces is required, the workpiece is usually clamped and positioned by a tooling fixture, and then the worker uses the welding head to approach the workpiece for welding. However, when a mechanical device is needed to bring the welding head close to the workpiece for welding, the workpiece is currently clamped and positioned after being loaded into place. But the stability and accuracy of workpiece positioning are low in this case, which cannot meet the requirements of laser welding and other applications. Therefore, there is an urgent need for a fixture that can improve the positioning accuracy of the workpiece. Utility Model Content

[0003] The purpose of this utility model is to provide a welding fixture to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A welding fixture includes a worktable, on which are arranged: a front positioning group having a front positioning mold that can move up and down; a rear positioning group located behind the front positioning group, the rear positioning group including a movable mold, a rear positioning mold disposed on the movable mold, and a pressure mold, the movable mold being able to approach or move away from the front positioning mold, a pressure groove being formed between one side of the rear positioning mold and the bottom side of the pressure mold, the pressure mold being able to move downward towards or upward away from the rear positioning mold; and a side positioning group having a guide mold that can approach or move away from the front end of the pressure groove.

[0006] This technical solution has at least the following beneficial effects: When welding is required on a workpiece, the front positioning mold in the front positioning group moves downward, forming a limiting area between the front and rear positioning molds to position the workpiece. The workpiece is placed on the worktable and positioned against the front and rear positioning molds. Then, the pressure mold moves downward towards the rear positioning mold, narrowing the pressure groove formed between the rear positioning mold and the bottom side of the pressure mold, pressing the workpiece tightly onto the movable mold. Next, the movable mold moves forward a distance, allowing the workpiece to further conform to the front positioning mold. Meanwhile, the side positioning mold in the side positioning group also moves towards the workpiece, pressing and positioning the front end of the workpiece to be welded more tightly. After further positioning of the workpiece, it moves away from the workpiece, thus exposing the workpiece and avoiding interference during welding. In this way, clamping force is provided to the part of the workpiece to be welded from the front, rear, and side directions, greatly improving the positioning accuracy of the workpiece and the tightness of the welded part, thereby improving the quality and stability of the workpiece welding.

[0007] As a further improvement to the above technical solution, the rear positioning group includes a rear linear drive member, the rear linear drive member having a rear movable block that can move back and forth, and an elastic element is provided between the rear movable block and the movable mold.

[0008] As a further improvement to the above technical solution, a transmission groove is provided on the rear side of the mold, the rear movable block extends into the transmission groove, and anti-detachment protrusions are provided on both sides of the groove opening of the transmission groove to restrict the rear movable block from detaching. The elastic element is located between the bottom of the transmission groove and the rear movable block.

[0009] As a further improvement to the above technical solution, a roller is provided on the side of the template close to the pressure groove. The roller can rotate around the axis in the up-down direction, and multiple rollers are provided in the front-back direction.

[0010] As a further improvement to the above technical solution, the movable mold is provided with a rear lifting drive component, which is connected to the pressing mold and can drive the pressing mold to move up and down.

[0011] As a further improvement to the above technical solution, the front positioning group includes a front lifting drive component, which is connected to the front positioning mold and can drive the front positioning mold to move up and down.

[0012] As a further improvement to the above technical solution, the rear top surface of the front positioning mold is provided with an avoidance slope, which is inclined downwards and backwards.

[0013] As a further improvement to the above technical solution, a clamping mechanism is defined by one front positioning group, one rear positioning group, and one side positioning group, and the number of clamping mechanisms is not less than two.

[0014] As a further improvement to the above technical solution, the worktable is provided with a discharge port at the position between the front positioning mold and the rear positioning mold.

[0015] As a further improvement to the above technical solution, a discharge trough is provided on the workbench below the discharge port, and the discharge trough extends downward at an angle away from the discharge port.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0018] Figure 1 This is a top view of the entire utility model.

[0019] Figure 2 yes Figure 1 A magnified view of part A.

[0020] Figure 3 yes Figure 1 A magnified view of part B.

[0021] In the attached diagram: 100-Workbench, 110-Discharge port, 210-Front positioning mold, 220-Front lifting drive component, 310-Modible mold, 320-Rear positioning mold, 330-Pressure mold, 340-Rear linear drive component, 341-Rear movable block, 342-Elastic component, 343-Anti-detachment protrusion, 350-Rear lifting drive component, 410-Modulator, 411-Roller. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is 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 any suitable manner in one or more embodiments or examples.

[0027] Reference Figure 1 A welding fixture includes a worktable 100, on which a front positioning group, a rear positioning group, and a side positioning group are provided. The front positioning group has a front positioning mold 210 that can move up and down. The rear positioning group is located behind the front positioning group and includes a movable mold 310, a rear positioning mold 320 disposed on the movable mold 310, and a pressing mold 330. The movable mold 310 can move closer to or further away from the front positioning mold 210. A pressing groove is formed between one side of the rear positioning mold 320 and the bottom side of the pressing mold 330. The pressing mold 330 can move downwards closer to or upwards away from the rear positioning mold 320. The side positioning group has a front positioning mold 210 that can move up and down. The template 410 at the front end of the pressure groove, in practical applications, includes a side positioning assembly including a side translation drive component. The side translation drive component is connected to the worktable 100 and is connected to the backrest. The side translation drive component provides a driving force to the backrest to move closer to or away from the pressure groove. In practical applications, the side translation drive component can be a cylinder, an electric screw, or a hydraulic cylinder. The front positioning mold 210 abuts against the workpiece with the side providing positioning as the front positioning surface. The front positioning surface extends inclined to the right rear. The rear positioning mold 320 abuts against the workpiece with the side providing positioning as the rear positioning surface. The rear positioning surface extends inclined to the left front. At this time, the area formed between the rear positioning surface and the bottom side of the pressure mold 330 is the pressure groove.

[0028] As described above, when welding is required on a workpiece, the front positioning mold 210 in the front positioning group moves downward, creating a workpiece-limiting area between the front positioning mold 210 and the rear positioning mold 320. The workpiece is placed on the worktable 100 and positioned against the front positioning mold 210 and the rear positioning mold 320. Then, the pressing mold 330 moves downward towards the rear positioning mold 320, narrowing the pressure groove formed between the rear positioning mold 320 and the bottom side of the pressing mold 330, pressing the workpiece firmly onto the movable mold 310. The movable mold 310 then moves forward a certain distance, causing... The workpiece is further brought closer to the front positioning mold 210, while the side positioning mold 410 in the side positioning group also approaches the workpiece, pressing and positioning the front end of the workpiece that needs to be welded more tightly. After further positioning of the workpiece, it moves closer to the direction away from the workpiece, thereby exposing the workpiece and avoiding interference during welding. In this way, the workpiece that needs to be welded is provided with clamping force from the front, back and sides, which greatly improves the positioning accuracy of the workpiece and the tightness of the welded part, thereby improving the quality and stability of the workpiece welding.

[0029] Naturally, the rear positioning group has a drive source that can drive the rear movable block 341 to move back and forth. Specifically, the rear positioning group includes a rear linear drive 340, which has a rear movable block 341 that can move back and forth. An elastic element 342 is provided between the rear movable block 341 and the movable mold 310. In practical applications, the rear linear drive 340 can be driven by a cylinder, an electric lead screw, or a hydraulic cylinder. The rear linear drive 340 drives the rear movable block 341 to move in the front-back direction, thereby driving the movable mold 310 forward toward the front positioning mold 210 or backward away from the front positioning mold 210 through the elastic element 342. When the movable mold 310 drives the workpiece to approach and abut against the front positioning mold 210, the elastic element 342 can provide elastic deformation in the front-back direction. This allows the elastic element 342 to provide buffer space when the rear linear drive 340 drives the movable mold 310 to move further forward, and to provide further pressure on the workpiece against the front positioning mold 210. This makes the connection of the parts of the workpiece that need to be welded tighter and effectively reduces the possibility of damage caused by excessive pressure on the workpiece.

[0030] In the above embodiment, the rear movable block 341 can be directly connected to the movable mold 310 through the elastic member 342, thereby driving the movable mold 310 to move back and forth. To improve the stability of the connection between the movable block and the movable mold 310 via the elastic member 342, such as... Figure 2As shown, in this embodiment, a transmission groove is provided on the rear side of the mold 330, and the rear movable block 341 extends into the transmission groove. Anti-detachment protrusions 343 are provided on both sides of the groove opening of the transmission groove to restrict the rear movable block 341 from detaching. The elastic element 342 is located between the bottom of the transmission groove and the rear movable block 341. In practical applications, the elastic element 342 can be a spring. In this case, the front end of the spring abuts against the bottom of the transmission groove, while the rear end of the spring abuts against the rear movable block 341. When it is necessary to move the movable mold 310 forward, the movable block moves forward and transmits the thrust to the movable mold 310 through the spring, thereby driving the movable mold 310 to move forward synchronously. When the workpiece abuts against the front positioning mold 210, the rear linear drive 340 can drive the rear movable block 341 to move further forward, causing the elastic element 342 to deform elastically, thereby increasing the clamping force of the workpiece against the front positioning mold 210. When it is necessary to move the movable mold 310 backward, the rear linear drive 340 drives the rear movable block 341 to move backward and abut against the anti-detachment protrusion 343 at the position of the transmission groove opening, thereby driving the rear movable mold 310 to move backward together through the anti-detachment protrusion 343, thereby relaxing the clamping and positioning of the workpiece.

[0031] When the template 410 abuts against the workpiece and the movable template 310 moves the workpiece forward, friction will occur between the workpiece and the template 410. At this time, the areas requiring welding are prone to wear. Therefore, in this embodiment, if... Figure 3 As shown, a roller 411 is provided on the side of the template 410 near the pressure groove. The roller 411 can rotate around an axis in the vertical direction, and multiple rollers 411 are arranged in the front-back direction. The multiple rollers 411 form a rolling support surface on the backrest. When the workpiece abuts against the support surface and moves, the rollers 411 are driven to rotate by the workpiece. This reduces the friction between the workpiece and the template 410, which is beneficial to improving the welding quality of the workpiece.

[0032] Naturally, the movable mold 310 is equipped with a drive source that can move the pressing mold 330 up and down. Specifically, the movable mold 310 is equipped with a rear lifting drive component 350, which is connected to the pressing mold 330. The rear lifting drive component 350 can move the pressing mold 330 up and down. In practical applications, the rear lifting drive component 350 can be a cylinder, electric screw, or hydraulic cylinder. Before the workpiece needs to be placed for positioning, the rear lifting drive component 350 moves the pressing mold 330 upward to the top of its stroke. At this time, the space where the pressing groove is located can be opened. After the workpiece is initially positioned against the front positioning mold 210, the rear lifting drive component 350 moves the pressing mold 330 downward. At this time, the space where the pressing groove is located is reduced, pressing and positioning the workpiece.

[0033] The front positioning assembly includes a drive source that can move the front positioning mold 210 up and down. Specifically, the front positioning assembly includes a front lifting drive component 220, which is connected to the front positioning mold 210. The front lifting drive component 220 can move the front positioning mold 210 up and down. In practical applications, the front lifting drive component 220 can be a cylinder, an electric lead screw, or a hydraulic cylinder. When a workpiece needs to be placed for positioning, the front lifting drive component 220 moves the front positioning mold 210 down, so that the front positioning mold 210 moves down onto the worktable 100. Then, the workpiece is placed into the pressure groove and abuts against the front positioning mold 210. After welding the workpiece, the front lifting drive component 220 moves the front positioning mold 210 up, so that the workpiece can pass under the front positioning mold 210, facilitating the removal of the workpiece and improving the convenience of workpiece unloading.

[0034] To reduce the impact of the front positioning mold 210 on the welding process of the workpiece when providing positioning, in this embodiment, the rear top surface of the front positioning mold 210 is provided with a relief slope, which is inclined downwards and backwards. The relief slope can reduce the space occupied near the welding part of the workpiece, thereby facilitating the welding process of the workpiece and reducing the impact on the front positioning mold 210.

[0035] To better coordinate the loading, unloading, and welding of workpieces, thereby improving work efficiency, in this embodiment, a fixture mechanism is formed by one front positioning group, one rear positioning group, and one side positioning group, and the number of fixture mechanisms is not less than two. When welding is performed on a workpiece in one fixture mechanism, the workpiece can be loaded and unloaded in another fixture mechanism, thus reducing the waiting time for loading and unloading workpieces and improving the efficiency of welding.

[0036] In some embodiments, the worktable 100 is provided with a discharge port 110 at a position corresponding to the front positioning mold 210 and the rear positioning mold 320. When the workpiece is processed between the front positioning mold 210 and the rear positioning mold 320, there will be waste such as welding slag. At this time, the waste can fall directly down from the discharge port 110, reducing the accumulation on the worktable 100, thereby reducing the impact on the next workpiece positioning and welding process.

[0037] Furthermore, the workbench 100 is provided with a discharge trough located below the discharge port 110, and the discharge trough extends downward at an angle away from the discharge port 110. The discharge trough can guide falling welding slag and other waste materials, thereby guiding and discharging the welding slag and other waste materials to a collection container below the discharge trough, improving the overall ease of operation.

[0038] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A welding fixture, characterized in that: Includes a workbench (100), on which are provided: The front positioning assembly has a front positioning module (210) that can move up and down; The rear positioning group is located behind the front positioning group. The rear positioning group includes a movable mold (310), a rear positioning mold (320) disposed on the movable mold (310), and a pressing mold (330). The movable mold (310) can move closer to or further away from the front positioning mold (210). A pressing groove is formed between one side of the rear positioning mold (320) and the bottom side of the pressing mold (330). The pressing mold (330) can move downward closer to or upward further away from the rear positioning mold (320). The side positioning group has a template (410) that can be brought close to or away from the front end of the pressure groove.

2. The welding fixture according to claim 1, characterized in that: The rear positioning assembly includes a rear linear drive (340), which has a rear movable block (341) that can move back and forth, and an elastic element (342) is provided between the rear movable block (341) and the movable module (310).

3. The welding fixture according to claim 2, characterized in that: The rear side of the mold (330) is provided with a transmission groove, the rear movable block (341) extends into the transmission groove, and anti-detachment protrusions (343) are provided on both sides of the groove opening of the transmission groove to restrict the rear movable block (341) from detaching. The elastic element (342) is located between the bottom of the transmission groove and the rear movable block (341).

4. The welding fixture according to claim 1, characterized in that: The template (410) is provided with a roller (411) on the side near the pressure groove. The roller (411) can rotate around the axis in the up and down direction. Multiple rollers (411) are provided in the front and back direction.

5. The welding fixture according to claim 1, characterized in that: The movable mold (310) is provided with a rear lifting drive (350), which is connected to the pressing mold (330) and can drive the pressing mold (330) to move up and down.

6. The welding fixture according to claim 1, characterized in that: The front positioning assembly includes a front lifting drive (220), which is connected to the front positioning mold (210) and can drive the front positioning mold (210) to move up and down.

7. The welding fixture according to claim 1, characterized in that: The rear top surface of the front positioning module (210) is provided with a clearance slope, which is inclined downwards and backwards.

8. The welding fixture according to claim 1, characterized in that: A clamping mechanism is defined by one front positioning group, one rear positioning group, and one side positioning group, and the number of clamping mechanisms is not less than two.

9. The welding fixture according to claim 1, characterized in that: The workbench (100) is provided with a discharge port (110) at the position between the front positioning mold (210) and the rear positioning mold (320).

10. The welding fixture according to claim 9, characterized in that: The workbench (100) is provided with a discharge trough located below the discharge port (110), and the discharge trough extends downward at an angle away from the discharge port (110).

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