Fixing device for core welding

Abstract

The utility model discloses a fixing device for iron core welding, include: fixing frame, the material receiving mechanism is located the bottom in the fixing frame, the material receiving mechanism can reciprocate horizontally along the first direction or can rotate in the fixing frame, to be suitable for receiving the iron core of the completion of piecing together circle, clamping mechanism, clamping mechanism is located on the material receiving mechanism, and can be elastically moved to the middle part axial contraction or elastically moved to the outside axial release on the material receiving mechanism, to be suitable for clamping or releasing the iron core, the pressing mechanism, the pressing mechanism is vertically arranged on the fixing frame, and can ascend or descend along the second direction of fixing frame, when the pressing mechanism descends, the pressing mechanism is with the outer periphery of clamping mechanism, and pushes the clamping mechanism to move to the middle part axial, to be suitable for clamping the iron core.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and specifically to a fixing device for iron core welding. Background Technology

[0002] In fields such as motor manufacturing, iron cores are typically assembled from multiple sector-shaped pieces into a circle and then welded together.

[0003] Traditional methods of fixing iron cores often use simple clamps or manual handling, which have obvious drawbacks: First, the fixing is not firm, and the iron core is prone to displacement or deformation during the welding process, resulting in poor roundness and low precision of the product; second, the clamping and unloading process is cumbersome and inefficient, affecting the overall production cycle; third, it lacks versatility, and a single clamp is often difficult to adapt to iron cores of different sizes or specifications.

[0004] While some fixing devices exist in the existing technology, their structures are usually complex, and the clamping and releasing mechanisms often rely on independent power sources and control units, resulting in high costs and inconvenient operation. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this utility model is to provide a fixing device for iron core welding, comprising: a fixing frame; The receiving mechanism is located at the bottom of the fixed frame. The receiving mechanism can move horizontally back and forth along the first direction or can rotate within the fixed frame to receive the iron core that has been assembled into a circle. A clamping mechanism is provided on the receiving mechanism and can be elastically moved inward or outward in the receiving mechanism to clamp or release the iron core. The pressing mechanism is vertically mounted on the fixed frame and can rise or fall along the second direction of the fixed frame. When the pressing mechanism falls, it wraps around the outer circumference of the clamping mechanism and pushes the clamping mechanism to move axially toward the center to clamp the iron core. When the pressing mechanism rises, it gradually moves away from the clamping mechanism, and the clamping mechanism gradually releases its elastic movement outward to facilitate the removal of the iron core.

[0006] Preferably, the receiving mechanism includes two slide rails, which are spaced apart at the bottom of the fixed frame; A gas spring, which is disposed within the fixed frame along a first direction and spaced apart from the slide rail; The first slide plate is slidably mounted on the two slide rails, and the transmission end of the gas spring is connected to the first slide plate; A hollow rotating platform is mounted on the first sliding plate.

[0007] Preferably, the clamping mechanism includes a fixture, which is disposed on the hollow rotating platform; A mandrel, which is vertically disposed in the middle of the fixture; Multiple first positioning grooves are arranged at equal intervals around the periphery of the fixture and extend to the interior and exterior of the fixture. Multiple sliding grooves are arranged at equal intervals around the periphery of the fixture and extend to the interior and exterior of the fixture; Multiple clamping blocks are slidably disposed within multiple sliding grooves.

[0008] Preferably, the two limiting blocks in the chute are arranged at an interval between vertically positioned.

[0009] Preferably, the clamping block is provided with two limiting grooves, which are arranged at an interval in vertical position and are slidably connected to the two limiting blocks respectively.

[0010] Preferably, a first spring is provided in the limiting groove, one end of the first spring abuts against the rear end face of the limiting groove, and the other end abuts against the limiting block.

[0011] Preferably, a plurality of the first positioning grooves and a plurality of the sliding grooves are alternately arranged on the periphery of the fixture.

[0012] Preferably, the outer peripheral surface of the mandrel is provided with a plurality of spacers, which are arranged in a circumferential and equally spaced manner.

[0013] Preferably, one end of the clamping block extends into the fixture, and the other end is set at an angle.

[0014] Preferably, the pressing mechanism includes a servo cylinder, which is vertically disposed on the top of the fixed frame, and the transmission end of the servo cylinder extends into the fixed frame; The second slide plate is slidably disposed within the fixed frame, and the transmission end of the servo cylinder is connected to the top of the second slide plate; A pressure cap is disposed at the bottom of the second slide plate and is disposed in the same vertical direction as the fixture; Multiple wedge blocks are arranged at equal intervals around the inner circumferential surface of the cover, and the multiple wedge blocks slide in engagement with the rear end faces of the multiple clamping blocks; A receiving platform, wherein the receiving platform is disposed in the middle of the cover; A pressure plate is provided at the bottom of the receiving platform. The pressure plate is provided with a plurality of fixing holes arranged at equal intervals around the perimeter, and the plurality of fixing holes are arranged through the thickness direction of the pressure plate. Multiple second springs are vertically disposed within the receiving platform, and the multiple second springs are distributed in a circular, equally spaced manner. Multiple ejector pins are slidably disposed in multiple fixing holes, and the multiple ejector pins are connected to multiple second springs; Multiple second positioning grooves are arranged at equal intervals around the periphery of the cover and penetrate the interior and exterior of the cover, and the multiple second positioning grooves correspond to the multiple first positioning grooves.

[0015] The above-mentioned solution of this utility model includes at least the following beneficial effects: By automatically reciprocating or rotating the receiving mechanism to receive materials, and coordinating with the automatic descent and ascent of the pressing mechanism, an automated cycle of iron core loading, fixing, welding, and unloading is achieved, significantly reducing manual operation and improving production efficiency. Furthermore, by utilizing the method of the pressing mechanism wrapping around and pushing the clamping mechanism axially contracting towards the center during descent, a uniform and stable centripetal clamping force is achieved on the outer circumference of the iron core, effectively preventing displacement and deformation of the iron core during welding, ensuring the roundness and welding quality after assembly. Clamping and releasing share a single power source (pressing mechanism); pressing down clamps and rising releases, eliminating the need for a separate complex drive system for clamping actions, simplifying the overall structure and control logic, and reducing manufacturing costs and failure rates. When the pressing mechanism rises, the clamping mechanism automatically releases outward under the action of elastic restoring force, providing ample operating space for removing the iron core, making unloading easy and quick. This device is suitable for welding and fixing iron cores of various specifications and has strong versatility.

[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 or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 is a structural schematic diagram of the fixing device for iron core welding provided in an embodiment of the present invention; Figure 2 is a structural schematic diagram of the clamping mechanism provided in an embodiment of this utility model; Figure 3 is a cross-sectional structural schematic diagram of the clamping mechanism provided in an embodiment of the present utility model; Figure 4 is a schematic diagram of the structure of the pressure cap provided in an embodiment of this utility model; Figure 5 is a cross-sectional structural diagram of the pressure cap provided in an embodiment of this utility model.

[0019] Explanation of icon numbers: 1. Fixing frame; 2. Receiving mechanism; 3. Clamping mechanism; 4. Pressing mechanism; 201. Slide rail; 202. Gas spring; 203. First slide plate; 204. Hollow rotating platform; 301. Fixture; 302. Mandrel; 303. First positioning groove; 304. Slide groove; 305. Clamping block; 306. Limiting block; 307. Limiting groove. 401. Servo cylinder; 402. Second slide plate; 403. Pressure cap; 404. Wedge block; 405. Receiving platform; 406. Pressure plate; 407. Second spring; 408. Ejector pin; 409. Second positioning groove.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] 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 intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 utility model according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The fixing device for iron core welding according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0027] Please refer to Figures 1-5. In this embodiment, the following components are included: a fixed frame 1; a receiving mechanism 2, which is located at the bottom of the fixed frame 1 and can move horizontally reciprocally along a first direction or rotate within the fixed frame 1 to receive the assembled iron core; a clamping mechanism 3, which is located on the receiving mechanism 2 and can move elastically inward or outward along the receiving mechanism 2 to clamp or release the iron core; and a pressing mechanism 4, which is vertically located on the fixed frame 1 and can rise or fall along a second direction of the fixed frame 1. When the pressing mechanism 4 falls, it wraps around the outer circumference of the clamping mechanism 3 and pushes the clamping mechanism 3 to move axially towards the center to clamp the iron core. When the pressing mechanism 4 rises, it gradually moves away from the clamping mechanism 3, and the clamping mechanism 3 gradually moves outward along the axial direction to facilitate the removal of the iron core.

[0028] The completed iron core is transferred to the receiving mechanism 2. Then, the receiving mechanism 2 moves horizontally along the first direction, or rotates the iron core at a certain angle, precisely moving it to the preset welding position. The pressing mechanism 4, located at the top of the fixed frame 1, is activated and descends along the second direction (vertical direction). During the descent, the internal structure of the pressing mechanism 4 gradually wraps around the outer circumference of the clamping mechanism 3, and through continuous descent, pushes the clamping mechanism 3 to axially contract towards the center. Under the action of this external force, the clamping mechanism 3 overcomes its internal elastic force, thus firmly clamping the iron core located at its center from the outside, providing stable fixation for subsequent welding. After the clamping mechanism 3 reliably fixes the iron core, welding can begin. After welding is completed, the pressing mechanism 4 moves in the opposite direction, rising along the second direction. As the pressing mechanism 4 rises, its wrapping and pushing force on the clamping mechanism 3 gradually weakens and eventually disappears. At this time, under the action of its own elastic restoring force, the clamping mechanism 3 gradually releases its elastic movement outward axially, thereby loosening the fixed iron core; after the iron core is loosened, it can be moved out of the welding station by the receiving mechanism 2, or directly taken out by the robot / manual, to complete a complete work cycle.

[0029] In this embodiment, the receiving mechanism 2 includes: two slide rails 201, which are spaced apart at the bottom of the fixed frame 1; a pneumatic rod 202, which is disposed in the fixed frame 1 along a first direction and spaced apart from the slide rails 201; a first sliding plate 203, which is slidably disposed on the two slide rails 201, and the transmission end of the pneumatic rod 202 is connected to the first sliding plate 203; and a hollow rotating platform 204, which is disposed on the first sliding plate 203.

[0030] The receiving mechanism 2 is located at the bottom inside the fixed frame 1. Its core function is to carry and transport the assembled iron core, so that it can be moved precisely to the welding station or the angle can be adjusted. First, at the bottom of the fixed frame 1, two parallel slide rails 201 are arranged at intervals. These two slide rails 201 provide precise guidance and stable support for the movement of the entire receiving mechanism 2. Secondly, inside the fixed frame 1, a pneumatic rod 202 is provided at a certain distance from the slide rail 201 along the first direction (i.e., the horizontal direction). The pneumatic rod 202 serves as the power source for the horizontal movement of the receiving mechanism 2, and its telescopic movement will directly drive the subsequent components. Next, a first slide plate 203 is slidably mounted on the two slide rails 201, so that the first slide plate 203 can move smoothly back and forth along the slide rails 201. The transmission end of the gas rod 202, that is, the end of its piston rod, is reliably connected to the first slide plate 203. When the gas rod 202 is activated, it can directly push or pull the first slide plate 203 to move along the slide rails 201. Finally, a hollow rotary platform 204 is fixedly installed on the upper surface of the first slide plate 203. The hollow rotary platform 204 is a standard automated component with its own rotary drive source (such as a servo motor) that can precisely control the rotation angle of its upper surface. The iron core and subsequent clamping fixtures 301 will be installed on this hollow rotary platform 204. During operation, when it is necessary to receive materials or adjust the circumferential position of the iron core, the hollow rotating platform 204 can drive the iron core on it to rotate. When it is necessary to move the iron core into or out of the welding station, the pneumatic rod 202 is activated, pushing the first sliding plate 203 and the entire platform to move horizontally back and forth along the slide rail 201. In this way, the receiving mechanism 2 efficiently completes the tasks of receiving, positioning and transferring the iron core.

[0031] In this embodiment, the clamping mechanism 3 includes: a fixture 301 disposed on a hollow rotating platform 204; a spindle 302 vertically disposed in the middle of the fixture 301; a plurality of first positioning grooves 303 disposed at equal intervals around the periphery of the fixture 301 and extending to the interior and exterior of the fixture 301; a plurality of sliding grooves 304 disposed at equal intervals around the periphery of the fixture 301 and extending to the interior and exterior of the fixture 301; a plurality of clamping blocks 305 slidably disposed within the plurality of sliding grooves 304; and the plurality of first positioning grooves 303 and the plurality of sliding grooves 304 alternately disposed on the periphery of the fixture 301.

[0032] The clamping mechanism 3 is mounted on the hollow rotating platform 204 of the receiving mechanism 2. Its core function is to directly support, position, and reliably clamp the assembled iron core. The fixture 301 is fixedly installed on the upper surface of the hollow rotating platform 204 and moves or rotates with the platform. The fixture 301 is the base that directly supports the iron core. In the middle of the fixture 301, a mandrel 302 is vertically arranged. This mandrel 302 is used to radially position the assembled iron core to ensure that the iron core remains concentric with the fixture 301 before clamping. On the circumferential surface of the fixture 301, a plurality of first positioning grooves 303 are machined at equal intervals around its axis. These first positioning grooves 303 are structures that penetrate the wall thickness of the fixture 301. Their special function is that when the iron core is clamped, the laser beam emitted by the external laser welding equipment can accurately pass through these first positioning grooves 303 and irradiate the iron core joint inside the fixture 301, thereby completing the welding operation. This makes the entire welding process possible without moving the iron core, enabling in-situ automated welding. Similarly, multiple sliding grooves 304 are equally spaced around the circumference of the fixture 301, extending to both the interior and exterior of the fixture 301. Multiple clamping blocks 305 are slidably mounted within these sliding grooves 304. A portion of each clamping block 305 is located inside the fixture 301 for direct contact and clamping of the outer circumferential surface of the iron core; the other portion is exposed outside the fixture 301 for engagement with the pressing mechanism 4. During operation, when it is necessary to clamp the iron core, the pressing mechanism 4 acts on the exposed part of the clamping block 305, pushing all the clamping blocks 305 to slide synchronously along their respective slides 304 towards the central axis of the fixture 301 (i.e. towards the center), thereby uniformly clamping the iron core from all sides. When welding is completed and unloading is required, the pressing mechanism 4 releases its force, and the clamping blocks 305 slide along the slides 304 away from the axis (i.e. outward) under the action of elastic elements (such as springs), thereby releasing the clamping on the iron core and facilitating the removal of the iron core. In addition, multiple first positioning slots 303 and multiple sliding grooves 304 are alternately arranged on the circumferential surface of the fixture 301. This layout ensures that the clamping block 305 does not block the path of the laser beam when clamping the iron core, thus guaranteeing the continuity and non-interference of the welding operation.

[0033] In this embodiment, there are two limiting blocks 306 in the slide groove 304, which are arranged at an interval in vertical position; there are two limiting grooves 307 in the clamping block 305, which are arranged at an interval in vertical position and are slidably connected to the two limiting blocks 306 respectively; there is a first spring in the limiting groove 307, one end of the first spring abuts against the rear end face of the limiting groove, and the other end abuts against the limiting block 306.

[0034] Inside each slide groove 304, two limiting blocks 306 are provided, which are distributed vertically at intervals within the slide groove 304. Correspondingly, inside each clamping block 305, two limiting grooves 307 are also machined, which are also distributed vertically at intervals. Their positions and dimensions are designed to precisely slide and engage with the two limiting blocks 306 in the slide groove 304. Through the sliding connection between the limiting blocks 306 and the limiting grooves 307, the clamping block 305 is constrained within the slide groove 304 and can only move stably back and forth along a preset axial path without deflection or falling off. To provide the clamping block 305 with an elastic function for automatic reset, a first spring is installed inside each limiting groove 307. One end of the first spring abuts against the inner wall of the rear end of the limiting groove 307, and the other end abuts against the front end face of the limiting block 306 extending into the limiting groove 307. During operation, when the external pressing mechanism 4 pushes the clamping block 305 to move towards the center of the fixture 301 (i.e., performs the clamping action), the clamping block 305 slides inward along the slide groove 304. At this time, the limiting block 306 moves backward relative to the limiting groove 307, compressing the first spring, which accumulates elastic potential energy. When welding is completed and the external pressing mechanism 4 removes its thrust, the compressed first spring releases its elastic potential energy, and its rebound force pushes the limiting block 306, thereby driving the entire clamping block 305 to move outward along the slide groove 304, automatically resetting to the initial release state, thus smoothly releasing the iron core. This structure ensures the accuracy of the clamping action and the reliability of the release action, and is the core mechanism for realizing automated clamping and release.

[0035] In this embodiment, the outer circumferential surface of the mandrel 302 is provided with multiple spacers, which are arranged in a circumferential and equally spaced manner. Multiple spacers are fixedly installed on the outer circumferential surface of the mandrel 302. These spacers are arranged at equal intervals around the axis of the mandrel 302. An axial groove, penetrating the upper and lower ends of the mandrel 302, is naturally formed between every two adjacent spacers. The dimensions of these grooves are precisely designed to directly place iron core pieces or stacked iron core assemblies. During operation, the operator sequentially places the individual pieces constituting the iron core or the initially stacked blocks into the grooves between these spacers. This structure ensures that the individual iron core units are effectively separated and positioned by the spacers, thereby enabling rapid and accurate assembly into a complete circular iron core on the mandrel 302. This design not only greatly facilitates the rounding operation of the iron core and ensures the roundness of the assembled core, but also provides a solid foundation for maintaining the stability of the iron core shape during subsequent welding.

[0036] In this embodiment, one end of the clamping block 305 extends into the fixture 301, and the other end is set with an inclined surface. In order to achieve efficient force transmission and action conversion, the other end of the clamping block 305 is specially designed as an inclined surface structure. The core purpose of this inclined surface structure is to form a wedge connection with the pressing mechanism 4. During operation, when the pressing mechanism 4 descends vertically, its corresponding component (such as wedge block 404 or inclined sleeve) will contact the inclined surface at the tail end of the clamping block 305. Through this wedge connection between the inclined surfaces, the vertical downward linear motion of the pressing mechanism 4 is effectively converted into a radial clamping force that pushes the clamping block 305 to move horizontally along its groove 304 toward the center of the fixture 301. Conversely, when the pressing mechanism 4 rises, the wedge connection between the two is released, and the clamping block 305 is reset along the inclined surface under the action of the elastic element, thus achieving release. This wedge connection design cleverly transforms the vertical power source of the pressing mechanism 4 into the horizontal clamping action of the clamping mechanism 3, achieving the effect of controlling the synchronous radial movement of multiple clamping blocks 305 with a single linear motion. This makes the entire mechanism highly efficient in power transmission, compact in structure, and reliable in operation.

[0037] In this embodiment, the pressing mechanism 4 includes: a servo cylinder 401, which is vertically mounted on the top of the fixed frame 1, and the transmission end of the servo cylinder 401 extends into the fixed frame 1; a second sliding plate 402, which is slidably mounted in the fixed frame 1, and the transmission end of the servo cylinder 401 is connected to the top of the second sliding plate 402; a pressure cover 403, which is located at the bottom of the second sliding plate 402 and is located in the same vertical direction as the fixture 301; a plurality of wedge blocks 404, which are equally spaced around the inner circumferential surface of the pressure cover 403, and the plurality of wedge blocks 404 slide in cooperation with the rear end faces of the plurality of clamping blocks 305; a receiving platform 405, which is located in the middle of the pressure cover 403; and a pressure plate 406, which is located at the bottom of the receiving platform 405. The pressure plate 406 is provided with multiple fixing holes arranged at equal intervals around it, and the multiple fixing holes are arranged through it along the thickness direction; multiple second springs 407 are vertically arranged in the receiving platform 405, and the multiple second springs 407 are distributed in a circumferential manner at equal intervals; multiple ejector pins 408 are slidably arranged in the multiple fixing holes, and the multiple ejector pins 408 are connected to the multiple second springs 407; multiple second positioning grooves 409 are arranged at equal intervals around the periphery of the pressure plate 401, and penetrate through the interior and exterior of the pressure plate 401, and the multiple second positioning grooves 409 correspond to the multiple first positioning grooves 303.

[0038] A servo cylinder 401 is vertically fixed to the top of the mounting frame 1, with its transmission end extending downwards into the interior space of the mounting frame 1. As the core power source, the servo cylinder 401 provides precisely controlled vertical reciprocating motion. A second slide plate 402 is slidably mounted on a guide structure inside the mounting frame 1, with its top directly connected to the transmission end of the servo cylinder 401. Therefore, the second slide plate 402 can precisely rise or fall as driven by the servo cylinder 401. The pressure cap 403 is fixedly installed at the bottom of the second slide plate 402, and its position is on the same vertical axis as the fixture 301 on the receiving mechanism 2 below. The interior of the pressure cap 403 is hollow, which can accommodate and wrap the clamping mechanism 3 on the fixture 301 when it sinks. On the inner circumferential surface of the pressure cap 403, a plurality of wedge blocks 404 are fixed at equal intervals around its axis. The inclined surfaces of these wedge blocks 404 are designed to wedge into the inclined surfaces of the outer ends of the clamping blocks 305. When the pressure cap 403 descends, the wedge blocks 404 descend with it, and their inclined surfaces will embed into and squeeze the inclined surfaces of the clamping blocks 305, thereby converting the vertical downward movement of the pressure cap 403 into the horizontal radial movement of the clamping blocks 305 toward the center of the fixture 301, thus achieving the clamping of the iron core. In the center of the pressure cap 403, there is a receiving platform 405. A pressure plate 406 is installed at the bottom of the receiving platform 405. The pressure plate 406 has multiple fixing holes that are equally spaced around its axis and extend through the thickness of the pressure plate 406. Inside the receiving platform 405, multiple second springs 407 are vertically installed. These second springs 407 are also equally spaced around the axis. The upper ends of multiple ejector pins 408 pass through the fixing holes on the pressure plate 406 and extend into the receiving platform 405 to connect with the lower ends of the corresponding second springs 407. This allows the ejector pins 408 to slide within the fixing holes while receiving continuous downward elastic pressure from the second springs 407. The function of the ejector pin 408 is as follows: when the pressure cap 403 descends as a whole, the ejector pin 408 contacts the upper surface of the iron core before or simultaneously with the wedge block 404. Under the elastic action of the second spring 407, the ejector pin 408 continues to press down on the iron core to ensure that the iron core is at a preset horizontal height in the fixture 301, preventing it from tilting or shifting during subsequent clamping or welding, thereby ensuring the accuracy and stability of the welding position.

[0039] In the description of this specification, references to terms such as "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 the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0040] 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, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fixing device for welding iron cores, characterized in that, include: Fixture; The receiving mechanism is located at the bottom of the fixed frame. The receiving mechanism can move horizontally back and forth along the first direction or can rotate within the fixed frame to receive the iron core that has been assembled into a circle. A clamping mechanism is provided on the receiving mechanism and can be elastically moved inward or outward in the receiving mechanism to clamp or release the iron core. The pressing mechanism is vertically mounted on the fixed frame and can rise or fall along the second direction of the fixed frame. When the pressing mechanism falls, it wraps around the outer circumference of the clamping mechanism and pushes the clamping mechanism to move axially toward the center to clamp the iron core. When the pressing mechanism rises, it gradually moves away from the clamping mechanism, and the clamping mechanism gradually releases its elastic movement outward to facilitate the removal of the iron core.

2. The fixing device for iron core welding according to claim 1, characterized in that, The receiving mechanism includes: Two slide rails are spaced apart at the bottom of the fixed frame; A gas spring, which is disposed within the fixed frame along a first direction and spaced apart from the slide rail; The first slide plate is slidably mounted on the two slide rails, and the transmission end of the gas spring is connected to the first slide plate; A hollow rotating platform is mounted on the first sliding plate.

3. The fixing device for iron core welding according to claim 2, characterized in that, The clamping mechanism includes: A fixture, wherein the fixture is disposed on the hollow rotating platform; A mandrel, which is vertically disposed in the middle of the fixture; Multiple first positioning grooves are arranged at equal intervals around the periphery of the fixture and extend to the interior and exterior of the fixture. Multiple sliding grooves are arranged at equal intervals around the periphery of the fixture and extend to the interior and exterior of the fixture; Multiple clamping blocks are slidably disposed within multiple sliding grooves.

4. The fixing device for iron core welding according to claim 3, characterized in that, The two limiting blocks are arranged in a vertically spaced manner within the slide groove.

5. The fixing device for iron core welding according to claim 4, characterized in that, The clamping block is provided with two limiting grooves, which are arranged at an interval in vertical position and are slidably connected to the two limiting blocks respectively.

6. The fixing device for iron core welding according to claim 5, characterized in that, A first spring is provided in the limiting groove. One end of the first spring abuts against the rear end face of the limiting groove, and the other end abuts against the limiting block.

7. The fixing device for iron core welding according to claim 3, characterized in that, Multiple first positioning grooves and multiple sliding grooves are alternately arranged on the periphery of the fixture.

8. The fixing device for iron core welding according to claim 3, characterized in that, The outer circumferential surface of the mandrel is provided with multiple spacers, which are arranged in a circumferential and equally spaced manner.

9. The fixing device for iron core welding according to claim 3, characterized in that, One end of the clamping block extends into the fixture, and the other end is set at an angle.

10. The fixing device for iron core welding according to claim 7, characterized in that, The pressing mechanism includes: A servo cylinder is vertically mounted on the top of the fixed frame, and the transmission end of the servo cylinder extends into the fixed frame. The second slide plate is slidably disposed within the fixed frame, and the transmission end of the servo cylinder is connected to the top of the second slide plate; A pressure cap is disposed at the bottom of the second slide plate and is disposed in the same vertical direction as the fixture; Multiple wedge blocks are arranged at equal intervals around the inner circumferential surface of the cover, and the multiple wedge blocks slide in engagement with the rear end faces of the multiple clamping blocks; A receiving platform, wherein the receiving platform is disposed in the middle of the cover; A pressure plate is provided at the bottom of the receiving platform. The pressure plate is provided with a plurality of fixing holes arranged at equal intervals around the perimeter, and the plurality of fixing holes are arranged through the thickness direction of the pressure plate. Multiple second springs are vertically disposed within the receiving platform, and the multiple second springs are distributed in a circular, equally spaced manner. Multiple ejector pins are slidably disposed in multiple fixing holes, and the multiple ejector pins are connected to multiple second springs; Multiple second positioning grooves are arranged at equal intervals around the periphery of the cover and penetrate the interior and exterior of the cover, and the multiple second positioning grooves correspond to the multiple first positioning grooves.

Images