Electric welding hold-down cylinder

Abstract

This utility model discloses an electric welding clamping cylinder, relating to the field of clamping cylinder technology, aiming to solve the problem of poor adaptability in some existing welding clamping cylinders. The key technical points are: it includes a fixed base and a servo motor fixedly connected to it; a housing is detachably connected to the fixed base on the side opposite to the servo motor; the drive end of the servo motor is driven by a drive structure located inside the housing; the drive structure has an output end rotatably connected to the housing and extending out of the housing; a clamping arm is detachably connected to the output end; a clamping space is formed between the clamping arm and the housing. This utility model, through its structural design, allows the overall structure to adapt to a wider range of processed parts.

Description

Technical Field

[0001] This utility model relates to the field of clamping cylinder technology, and more specifically, to an electric welding clamping cylinder. Background Technology

[0002] Welding clamping cylinders are core actuators in automated welding equipment. Their main function is to ensure that the workpiece remains accurately positioned and rigidly fixed during the welding process by providing a stable and controllable clamping force.

[0003] With the development of technology, the use of automated equipment has become increasingly common. In order to realize automated processing and ensure the quality of automated processing, the requirements for each part in the processing process are very high. Positioning and clamping are important steps to ensure processing quality. They not only affect the quality of processing, but also affect whether the corresponding process can be carried out completely and stably. Most of the existing welding clamping cylinders are custom-made structures and usually cannot adapt to the processing of parts of different sizes. Therefore, a structure is designed to solve the problem of poor adaptability of some existing welding clamping cylinders.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an electric welding clamping cylinder.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an electric welding clamping cylinder, including a fixed base and a servo motor fixedly connected thereto, a housing that is detachably connected to the fixed base on the side away from the servo motor, a drive structure located inside the housing is connected to the drive end of the servo motor, an output end that is rotatably connected to the housing and extends out of the housing is provided on the drive structure, a clamping arm is detachably connected to the output end, and a clamping space is provided between the clamping arm and the housing.

[0007] The present invention is further configured such that: the driving structure includes a first driving block that slides in a horizontal direction, a first connecting rod is rotatably connected to the first driving block, a guide groove is provided on the inner wall of the housing for the first connecting rod to pass through and slide, and guide rings that roll in the guide groove are rotatably connected to both ends of the first connecting rod, the diameter of the guide rings being the same as the width of the guide groove.

[0008] The present invention is further configured such that: a sliding plate is fixedly connected to the top wall of the first driving block, and a displacement sensor located on the sliding path of the sliding plate is fixedly connected to the inner top wall of the housing.

[0009] The present invention is further configured such that: a second driving block is rotatably connected to the first connecting rod, a second connecting rod is rotatably connected to the second driving block on the side opposite to the first connecting rod, a third driving block is rotatably connected to the second connecting rod, and symmetrically arranged output rods are fixedly connected to the third driving block. The output end is located on the side of the output rod away from the third driving block. A first bearing is sleeved on each output rod, and a first bearing hole for the first bearing to be inserted is opened on the inner wall of the housing.

[0010] The present invention is further configured such that: a pressing block is detachably connected to the pressing arm, and a triangular groove with an opening opposite to the pressing arm is provided on the pressing block and the pressing arm, and the groove wall of the triangular groove abuts against the output rod.

[0011] The present invention is further configured such that: the housing includes two small housings spliced ​​together, and a cover covering the outside of the servo motor is detachably connected to the fixed base on the side away from the housing.

[0012] The present invention is further configured such that: a drive screw is fixedly connected to the first drive block, a clearance guide groove is provided inside the servo motor for the drive screw to pass through, and a screw nut that is transmitted and connected to the drive screw is fixedly connected to the drive end of the servo motor.

[0013] In summary, this utility model has the following beneficial effects: The drive structure has an output end that is rotatably connected to the housing and extends out of the housing. A clamping arm is detachably connected to the output end. After being driven by a servo motor, it drives the drive structure that is connected to it. Under the action of the drive structure, the clamping arm moves, realizing the switching of clamping and releasing actions of the clamping arm. A clamping space is formed between the clamping arm and the housing. The housing within the clamping space has a mounting station for installing fixtures. The user can install the required fixtures in the mounting station on the housing with bolts according to the needs. Then, under the combined action of the clamping arm and the fixture, the required workpiece is stably clamped. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model with a small shell and cover removed; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 A cross-sectional view of this utility model Figure 1 ; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 A cross-sectional view of this utility model Figure 2 ; Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0015] In the diagram: 1. Fixed base; 2. Servo motor; 3. Housing; 4. Clamping arm; 5. Clamping space; 6. First drive block; 7. First connecting rod; 8. Guide groove; 9. Guide ring; 10. Sliding plate; 11. Displacement sensor; 12. Second drive block; 13. Second connecting rod; 14. Third drive block; 15. Output rod; 16. First bearing; 17. First bearing hole; 18. Clamping block; 19. Cover; 20. Drive screw; 21. Clearance guide groove; 22. Screw nut. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] An electric welding clamping cylinder, such as Figure 1 and Figure 2 As shown, the structure includes a fixed base 1 and a servo motor 2 fixedly connected to it. The servo motor 2 is a customized pull rod motor. The fixed base 1 is used to provide stable support and limit the movement of each part, ensuring that the overall structure can function stably. The servo motor 2 is fixed to the fixed base 1 by bolts. On the side of the fixed base 1 away from the servo motor 2, a housing 3 is detachably connected to it by bolts. The drive end of the servo motor 2 is connected to a drive structure located inside the housing 3. The drive structure has an output end that is rotatably connected to the housing 3 and extends out of the housing 3. A clamping arm 4 is detachably connected to the output end. After the servo motor 2 is driven, it will drive the drive structure connected to it. The moving structure drives the clamping arm 4 to move, switching between clamping and releasing actions. The servo motor 2, with its programmable control feature, ensures that the clamping angle and clamping force output by the clamping arm 4 are adjustable, allowing the overall structure to better adapt to the clamping and limiting of different types of parts. A clamping space 5 is formed between the clamping arm 4 and the housing 3. The housing 3, located within the clamping space 5, has mounting positions for fixtures. Users can install the required fixtures into the mounting positions on the housing 3 using bolts. Then, under the combined action of the clamping arm 4 and the fixtures, the workpiece is stably clamped.

[0018] like Figures 1-4As shown, the driving structure includes a first driving block 6 that slides horizontally. A first connecting rod 7 is rotatably connected to the first driving block 6. A guide groove 8 is provided on the inner wall of the housing 3 for the first connecting rod 7 to pass through and slide. The two ends of the first connecting rod 7 are rotatably connected to guide rings 9 that roll within the guide groove 8 through shaft hole engagement. The diameter of the guide ring 9 is the same as the width of the guide groove 8. Under the combined action of the guide ring 9 and the first rotating rod, the sliding process of the first driving block 6 is stably guided and limited, making the sliding process of the first driving block 6 in the horizontal direction more stable and smooth, and thus making the sliding and driving process of the first driving block 6 more stable and smooth.

[0019] like Figures 1-3 As shown, a sliding plate 10 is fixedly connected to the top wall of the first driving block 6 by screws, and a displacement sensor 11 located on the sliding path of the sliding plate 10 is fixedly connected to the inner top wall of the housing 3 by screws. The number of displacement sensors 11 is set to two, and they are located at both ends of the displacement path of the sliding plate 10. When the sliding plate 10 slides to the displacement sensor 11, the displacement sensor 11 will convert the corresponding action signal into an electrical signal, thereby facilitating the stable identification of the position of the sliding plate 10 and the first driving block 6 fixedly connected to the sliding plate 10, and thus controlling the sliding process and sliding path of the first driving block 6.

[0020] like Figures 2-7As shown, a second driving block 12 is rotatably connected to the first connecting rod 7 via a shaft hole. A second connecting rod 13 is rotatably connected to the second driving block 12 on the side opposite to the first connecting rod 7. A third driving block 14 is rotatably connected to the second connecting rod 13. When the first driving block 6 is driven, it will drive the first connecting rod 7 to move. When the first connecting rod 7 moves, it will drive the second driving block 12. When the second driving block 12 is driven, it will drive the second connecting rod 13. The second connecting rod 13 will drive the third driving block 14. Symmetrically arranged output rods 15 are integrally formed on the third driving block 14. The output ends are located on the side of the output rods 15 away from the third driving block 14. Each output rod 15 is fitted with a first bearing 16, which is a needle roller bearing. The inner wall of body 3 is provided with a first bearing hole 17 for the first bearing 16 to be inserted. The first bearing hole 17 is used to achieve stable placement and limit of the first bearing 16, ensuring that the position of the first bearing 16 and its function are more stable. The first bearing 16 provides stable support and limit for the position of the output shaft, ensuring that the position of the output rod 15 and its function are more stable. The first bearing 16 can also reduce the friction force on the output rod 15 during rotation, making the rotation of the output rod 15 smoother and thus making the driving process of the output rod 15 more stable. When the third drive block 14 is driven, it will drive the output rod 15 to rotate, so that the output rod 15 outputs by rotation.

[0021] like Figures 1-3 As shown, a clamping block 18 is detachably connected to the clamping arm 4. The clamping block 18 is symmetrically provided with locking bolts for threaded connection with the clamping arm 4. Both the clamping block 18 and the clamping arm 4 have triangular grooves with opposing openings. The groove walls abut against the output rod 15. The output rod 15 has a connecting section with a square cross-section. The outer wall of the connecting section abuts against the groove walls of the triangular grooves. When the clamping block 18 and the clamping arm 4 abut against the connecting section, the distance between the clamping block 18 and the clamping arm 4 is greater than zero. This arrangement ensures that when the locking bolts connect the clamping block 18 and the clamping arm 4, the clamping block 18 and the clamping arm 4 can stably abut against the output rod 15, achieving the connection between the clamping block 18 and the clamping arm 4 and the output shaft. This allows the output rod 15 to stably drive the clamping arm 4 during operation, ensuring the clamping function of the clamping arm 4 is stably achieved.

[0022] like Figures 1-3As shown, the housing 3 includes two smaller housings that are spliced ​​together. The two smaller housings are positioned by a pin and locked by bolts. The two smaller housings are fixed to the fixing base 1 by bolts. This configuration makes the housing 3 a detachable and splicable structure, which makes the process of installing and inspecting the internal structure of the housing 3 more convenient. The assembly and maintenance of the overall structure are also more convenient. A cover 19 covering the outside of the servo motor 2 is detachably connected to the fixing base 1 on the side opposite to the housing 3 by bolts. The cover 19 is used to stably cover and protect the servo motor 2, ensuring that the subsequent operation of the servo motor 2 is more stable. At the same time, several plugs for connecting to the servo motor 2 are fixedly connected to the cover 19.

[0023] like Figures 2-5 As shown, a drive screw 20 is fixedly connected to the first drive block 6 via a pin connection. The servo motor 2 has a clearance guide groove 21 for the drive screw 20 to pass through. The clearance guide groove 21 is reserved in the servo motor 2 during customization. The clearance guide groove 21 is used to provide clearance and guidance for the movement of the drive screw 20. The drive end of the servo motor 2 is fixedly connected to a screw nut 22 that is transmitted to the drive screw 20. During the drive process, the servo motor 2 drives the screw nut 22 to rotate. During the rotation of the screw nut 22, through the transmission connection between it and the drive screw 20, the screw nut 22 can stably drive the drive screw 20 connected to it to move, thereby enabling the drive function of the drive screw 20 to be stably realized, and enabling the subsequent clamping function of the overall structure to be stably realized.

[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An electric welding press cylinder, comprising a fixed seat (1) and a servo motor (2) fixedly connected thereto, characterized in that: On the side of the fixed base (1) away from the servo motor (2), there is a detachable housing (3) spliced ​​together. The drive end of the servo motor (2) is connected to a drive structure located inside the housing (3). The drive structure is provided with an output end that is rotatably connected to the housing (3) and extends out of the housing (3). A clamping arm (4) is detachably connected to the output end. A clamping space (5) is provided between the clamping arm (4) and the housing (3).

2. The electrically powered welding hold down cylinder of claim 1, wherein: The driving structure includes a first driving block (6) that slides horizontally, a first connecting rod (7) that is rotatably connected to the first driving block (6), a guide groove (8) that is provided on the inner wall of the housing (3) for the first connecting rod (7) to pass through and slide, and guide rings (9) that roll in the guide groove (8) that are rotatably connected to both ends of the first connecting rod (7), the diameter of the guide ring (9) being the same as the width of the guide groove (8).

3. The electrically powered welding hold down cylinder of claim 2, wherein: A sliding plate (10) is fixedly connected to the top wall of the first driving block (6), and a displacement sensor (11) located on the sliding path of the sliding plate (10) is fixedly connected to the inner top wall of the housing (3).

4. The electrically powered welding hold down cylinder of claim 3, wherein: A second driving block (12) is rotatably connected to the first connecting rod (7). A second connecting rod (13) is rotatably connected to the second driving block (12) on the side opposite to the first connecting rod (7). A third driving block (14) is rotatably connected to the second connecting rod (13). A symmetrically arranged output rod (15) is fixedly connected to the third driving block (14). The output end is located on the side of the output rod (15) away from the third driving block (14). A first bearing (16) is sleeved on each output rod (15). A first bearing hole (17) is opened on the inner wall of the housing (3) for the first bearing (16) to be inserted.

5. The electrically powered welding hold down cylinder of claim 4, wherein: A clamping block (18) is detachably connected to the clamping arm (4). Both the clamping block (18) and the clamping arm (4) have triangular grooves with opposite openings. The groove wall of the triangular groove abuts against the output rod (15).

6. The electrically powered welding hold down cylinder of claim 1, wherein: The housing (3) includes two small housings spliced ​​together, and a cover (19) covering the outside of the servo motor (2) is detachably connected to the fixed base (1) on the side away from the housing (3).

7. The electrically powered welding hold down cylinder of claim 2, wherein: A drive screw (20) is fixedly connected to the first drive block (6). The servo motor (2) is provided with a clearance guide groove (21) for the drive screw (20) to pass through. The drive end of the servo motor (2) is fixedly connected with a screw nut (22) that is connected to the drive screw (20) for transmission.

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