Clamping mechanism for bellows processing

Abstract

This utility model provides a clamping mechanism for bellows processing, relating to the field of bellows processing technology. It includes a main body structure with a clamping mechanism inside and a tensioning mechanism outside. The main body structure includes a base with four support columns on it, and a top plate installed on the side of each support column away from the base. The bellows grooves on the inner sides of the upper and lower clamping blocks precisely engage with the contour of the bellows. Combined with the limiting effect of the guide columns, slippage common in traditional planar clamping is avoided. The vertical extrusion force from the upper and lower straightening dies, along with the lateral tension force, allows for more precise bellows recovery and higher processing accuracy. Simultaneously, the elasticity of the suspension spring is just right to hold the lower clamping block without damaging the bellows due to excessive tension, thus avoiding damage caused by overstretching and significantly reducing the workpiece scrap rate.

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipe processing technology, and in particular to a clamping mechanism for corrugated pipe processing. Background Technology

[0002] A bellows clamping device is a specialized tool used to fix, position, or clamp bellows. Its core function is to stabilize the position or shape of the bellows by using clamping components in conjunction with adjustment and locking mechanisms, preventing it from shifting, deforming, or falling off due to external forces during processing. Bellows are widely used in many industrial fields due to their good flexibility, sealing properties, and compensation capabilities, and clamping devices, as supporting tools, play a key role in various industries.

[0003] However, existing clamping devices have many limitations. Most use flat or curved clamping surfaces, which do not fit well with the corrugated structure of the corrugated pipe surface. They are often point contacts rather than surface contacts, resulting in uneven distribution of clamping force. During processing, the corrugated pipe is prone to displacement, which directly affects the accuracy of subsequent processes such as welding and cutting. Existing clamping devices can only perform single clamping and cannot correct the bending of the corrugated pipe or eliminate the wrinkles caused by bending. Multiple machines must be used in steps, which greatly increases the production cycle and equipment cost. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a clamping mechanism for bellows processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a clamping mechanism for corrugated pipe processing, comprising a main body, a clamping mechanism inside the main body, a stretching mechanism outside the clamping mechanism, a base, four support columns on the base, a top plate mounted on the side of the support columns away from the base, a positioning seat mounted on one side of the base, an upper straightening mold, a lower straightening mold below the upper straightening mold, two limiting rods on the top of the upper straightening mold, a fixing seat on the top of the upper straightening mold, a screw above the fixing seat, a motor on the top of the screw, upper clamping blocks and lower clamping blocks on both sides of the upper and lower straightening molds, a drag hook on the side of the lower clamping block away from the lower straightening mold, and two guide columns inside both the upper and lower straightening molds.

[0006] In a preferred embodiment, the tensioning mechanism includes a piston rod, with a first transmission link and a second transmission link below the piston rod. A connecting rod seat is provided on the side of the first transmission link away from the piston rod, and a ball bearing slider is provided at the bottom of the connecting rod seat. A guide rail is provided below the ball bearing slider, and a limiting block is provided on the side of the connecting rod seat away from the first transmission link. A second drag hook is provided inside the limiting block, and a suspension spring is provided on the second drag hook.

[0007] In a preferred embodiment, the base and the support column are fixedly connected by bolts, the support column and the positioning seat are fixedly connected by bolts, and the base and the positioning seat are fixedly connected by bolts.

[0008] In a preferred embodiment, the upper straightening mold is fixedly connected to the screw with bolts, and the motor is fixedly connected to the top plate with bolts.

[0009] In a preferred embodiment, the piston rod, transmission connecting rod one, and transmission connecting rod two are movably connected by a pin; transmission connecting rod one and transmission connecting rod two are movably connected to the connecting rod seat by a pin; the connecting rod seat is fixedly connected to the ball block slider by bolts; and the connecting rod seat is fixedly connected to the tow hook two by bolts.

[0010] In a preferred embodiment, piston rods are provided on both sides of the upper straightening mold, and the piston rods are fixedly connected to the upper straightening mold with bolts.

[0011] In a preferred embodiment, the base is fixedly connected to the guide rail with bolts.

[0012] In a preferred embodiment, the upper corrective mold and the upper clamping block are movably engaged by guide posts, and the lower corrective mold and the lower clamping block are movably engaged by guide posts.

[0013] In a preferred embodiment, both the upper clamping block and the lower clamping block are provided with corrugated grooves on their inner sides.

[0014] In a preferred embodiment, the two ends of the suspension spring are respectively connected to tow hook one and tow hook two.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] The corrugated grooves on the inner sides of the upper and lower clamping blocks of this invention can precisely engage with the contour of the bellows. With the limiting of the guide post, slippage of traditional planar clamping is avoided. Through the vertical extrusion force of the upper and lower straightening dies, combined with the lateral tensile force, the bellows is restored more accurately, and the processing precision is higher. At the same time, the elasticity of the suspension spring can just hold the lower clamping block without damaging the bellows due to excessive pulling, avoiding damage caused by overstretching and greatly reducing the scrap rate of the workpiece. Attached Figure Description

[0017] Figure 1 A front view of the clamping mechanism for processing bellows provided by this utility model.

[0018] Figure 2 A schematic diagram of the main structure of a clamping mechanism for processing corrugated pipes provided by this utility model.

[0019] Figure 3 This utility model provides a schematic diagram of a clamping mechanism for processing corrugated pipes.

[0020] Figure 4 A schematic diagram of the tensioning mechanism of a clamping mechanism for bellows processing provided by this utility model.

[0021] Legend:

[0022] 1. Main structure; 11. Base; 12. Support column; 13. Top plate; 14. Positioning seat;

[0023] 2. Clamping mechanism; 21. Upper straightening mold; 22. Lower straightening mold; 23. Limiting rod; 24. Fixed base; 25. Screw; 26. Motor; 27. Upper clamping block; 28. Lower clamping block; 29. ​​Hook 1; 210. Guide post;

[0024] 3. Tensioning mechanism; 31. Piston rod; 32. Transmission link one; 33. Transmission link two; 34. Linkage seat; 35. Ball bearing slider; 36. Guide rail; 37. Limit block; 38. Towing hook two; 39. Suspension spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figure 1 - Figure 3As shown, this utility model provides a technical solution: a clamping mechanism for corrugated pipe processing, including a main body 1, a clamping mechanism 2 inside the main body 1, and a tensioning mechanism 3 outside the clamping mechanism 2. The main body 1 includes a base 11, four support columns 12 on the base 11, a top plate 13 installed on the side of the support columns 12 away from the base 11, and a positioning seat 14 installed on one side of the base 11. The clamping mechanism 2 includes an upper straightening mold 21, a lower straightening mold 22 below the upper straightening mold 21, two limiting rods 23 on the top of the upper straightening mold 21, a fixing seat 24 on the top of the upper straightening mold 21, a screw 25 above the fixing seat 24, and a motor 26 on the top of the screw 25. The upper straightening mold 21 and the lower straightening mold 22... Both sides of the 2 are provided with an upper clamping block 27 and a lower clamping block 28. The lower clamping block 28 is provided with a drag hook 29 on the side away from the lower straightening mold 22. Both the upper straightening mold 21 and the lower straightening mold 22 are provided with two guide posts 210. The base 11 and the support post 12 are fixedly connected by bolts. The support post 12 and the positioning seat 14 are fixedly connected by bolts. The base 11 and the positioning seat 14 are fixedly connected by bolts. The upper straightening mold 21 and the screw 25 are fixedly connected by bolts. The motor 26 and the top plate 13 are fixedly connected by bolts. The upper straightening mold 21 and the upper clamping block 27 are movably engaged by the guide post 210. The lower straightening mold 22 and the lower clamping block 28 are movably engaged by the guide post 210. Corrugated grooves are provided on the inner side of both the upper clamping block 27 and the lower clamping block 28.

[0028] In this embodiment, the upper straightening mold 21 is driven down by the motor 26, and the lower straightening mold 22 applies vertical extrusion force to the bellows, which can effectively correct the bending deformation of the bellows. The positioning seat 14 can provide support for the bellows during processing, preventing secondary bending due to its own weight. At the same time as the upper straightening mold 21 is pressed down, the upper clamping block 27 and the lower clamping block 28 are driven to engage vertically, which can limit the longitudinal movement of the bellows. The corrugated grooves in the upper clamping block 27 and the lower clamping block 28 can better and more accurately engage the bellows, preventing the bellows from sliding during processing and ensuring firm clamping.

[0029] Example 2

[0030] like Figure 1 - Figure 4As shown, the tensioning mechanism 3 includes a piston rod 31. Below the piston rod 31 are a first transmission link 32 and a second transmission link 33. A connecting rod seat 34 is located on the side of the first transmission link 32 away from the piston rod 31. A ball bearing slider 35 is located at the bottom of the connecting rod seat 34. A guide rail 36 is located below the ball bearing slider 35. A limiting block 37 is located on the side of the connecting rod seat 34 away from the first transmission link 32. A second drag hook 38 is located inside the limiting block 37. A suspension spring 39 is mounted on the second drag hook 38. The piston rod 31 and the first transmission link 32... 2. The transmission connecting rod 2 and the transmission connecting rod 33 are movably connected by a pin. The transmission connecting rod 1 and the transmission connecting rod 2 are movably connected to the connecting rod seat 34 by a pin. The connecting rod seat 34 is fixedly connected to the ball slider 35 by bolts. The connecting rod seat 34 is fixedly connected to the drag hook 2 38 by bolts. The upper straightening mold 21 has piston rods 31 on both sides. The piston rods 31 are fixedly connected to the upper straightening mold 21 by bolts. The base 11 is fixedly connected to the guide rail 36 by bolts. The two ends of the suspension spring 39 are respectively connected to the drag hook 1 29 and the drag hook 2 38.

[0031] In this embodiment, when the upper straightening mold 21 is pressed down, the piston rods 31 on both sides move down accordingly. After the downward pressure inside the piston rod 31 reaches the threshold, it pushes down to drive the transmission connecting rod 1 32 and the transmission connecting rod 2 33. The transmission connecting rod 1 32 and the transmission connecting rod 2 33 push the connecting rod seat 34 to move to both sides, thereby driving the limiting block 37 to push outward. Since the drag hook 2 38 on the limiting block 37 is connected to the drag hook 1 29 on the lower clamping block 28 through the suspension spring 39, when the limiting block 37 moves outward, it will stretch the suspension spring 39, causing the two upper clamps to... While clamping the bellows, the holding block 27 and the two lower clamping blocks 28 apply tensile force in the front and back directions. While repairing the bending of the bellows, the tensile force helps the bellows restore its original shape and precision. Through the suspension spring 39 connected to the first tow hook 29 and the second tow hook 38, the pulling force of the limiting block 37 moving outward can be converted into the traction force on the lower clamping block 28. However, the elasticity of the suspension spring 39 can pull the lower clamping block 28 without overstretching and damaging the bellows, thus avoiding excessive tension that could cause the bellows to be overstretched.

[0032] Working principle:

[0033] like Figure 1 - Figure 4As shown, the bellows is placed between the positioning seat 14 and the lower straightening mold 22 on the base 11 of the main body mechanism 1. The positioning seat 14 provides initial support and positioning for the end of the bellows to be processed. When the device is running, the motor 26 installed on the top plate 13 starts and outputs power to drive the screw 25 to rotate, thereby pushing the fixed seat 24 connected to the top of the upper straightening mold 21, so that the upper straightening mold 21 descends vertically along the limit rod 23. The guide column 210 on the upper straightening mold 21 drives the upper clamping block 27 to descend synchronously. The upper clamping block 27 presses down to align with the lower clamping block 28. The corrugated grooves in the upper clamping block 27 and the lower clamping block 28 precisely engage with the bellows. At this time, the pressing upper straightening mold 21 and the lower straightening mold 22 apply vertical extrusion force to the bellows to achieve initial correction of the bent part of the bellows.

[0034] As the upper straightening mold 21, lower straightening mold 22, upper clamping block 27 and lower clamping block 28 close, the piston rods 31 fixed on both sides of the upper straightening mold 21 move down synchronously under the drive of the upper straightening mold 21. After the internal pressure of the piston rod 31 reaches the threshold, it pushes the transmission connecting rod 1 32 and the transmission connecting rod 2 33 to swing outward with the pin as the fulcrum, thereby driving the connecting rod seat 34 installed on the ball slider 35 to slide along the guide rail 36 to both sides. The connecting rod seat 34 synchronously drives the limiting block 37 and the second hook 38 to move outward, so that the suspension spring 39 connecting the second hook 38 and the first hook 29 is stretched. The tension is transmitted to the lower clamping block 28 through the first hook 29. The lower clamping block 28 and the upper clamping block 27 work together to apply a lateral tensile force to the bellows.

[0035] During this process, the support column 12 provides fixed support for the top plate 13 and the base 11, ensuring the stability of the entire device. The vertical compressive force is continuously applied to the bend of the corrugated pipe, causing the corrugated pipe to gradually return to straightness. The lateral tensile force stretches the corrugated pipe along its axial direction, eliminating local wrinkles caused by bending. The corrugated grooves on the inner sides of the upper clamping block 27 and the lower clamping block 28 are tightly fitted to the surface of the corrugated pipe, effectively preventing the corrugated pipe from shifting under the dual force, ensuring that the correction and tensile forces are evenly covered on the entire corrugated pipe, and finally achieving the precise restoration of the corrugated pipe. At the same time, it also clamps and fixes the corrugated pipe to be processed.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A clamping mechanism for bellows processing, comprising a main body mechanism (1), characterized in that, The main body (1) is provided with a clamping mechanism (2) inside, and a tensioning mechanism (3) is provided on the outside of the clamping mechanism (2). The main body (1) includes a base (11), and four support columns (12) are provided on the base (11). A top plate (13) is installed on the side of the support column (12) away from the base (11). A positioning seat (14) is installed on one side of the base (11). The clamping mechanism (2) includes an upper straightening mold (21), and a lower straightening mold (22) is provided below the upper straightening mold (21). The upper straightening mold (21) is provided with two limiting rods (23) at the top. The upper straightening mold (21) is provided with a fixed seat (24) at the top. The fixed seat (24) is provided with a screw (25) above it. The screw (25) is provided with a motor (26) at the top. The upper straightening mold (21) and the lower straightening mold (22) are provided with an upper clamping block (27) and a lower clamping block (28) on both sides. The lower clamping block (28) is provided with a drag hook (29) on the side away from the lower straightening mold (22). The upper straightening mold (21) and the lower straightening mold (22) are provided with two guide posts (210).

2. The clamping mechanism for bellows processing according to claim 1, characterized in that: The tensioning mechanism (3) includes a piston rod (31), and a transmission connecting rod one (32) and a transmission connecting rod two (33) are provided below the piston rod (31). A connecting rod seat (34) is provided on the side of the transmission connecting rod one (32) away from the piston rod (31). A ball block slider (35) is provided at the bottom of the connecting rod seat (34). A guide rail (36) is provided below the ball block slider (35). A limiting block (37) is provided on the side of the connecting rod seat (34) away from the transmission connecting rod one (32). A drag hook two (38) is provided inside the limiting block (37). A suspension spring (39) is provided on the drag hook two (38).

3. The clamping mechanism for bellows processing according to claim 1, characterized in that: The base (11) and the support column (12) are fixedly connected by bolts, the support column (12) and the positioning seat (14) are fixedly connected by bolts, and the base (11) and the positioning seat (14) are fixedly connected by bolts.

4. The clamping mechanism for bellows processing according to claim 1, characterized in that: The upper straightening mold (21) is fixedly connected to the screw (25) with bolts, and the motor (26) is fixedly connected to the top plate (13) with bolts.

5. The clamping mechanism for bellows processing according to claim 2, characterized in that: The piston rod (31), transmission connecting rod one (32) and transmission connecting rod two (33) are movably connected by a pin. The transmission connecting rod one (32) and transmission connecting rod two (33) are movably connected to the connecting rod seat (34) by a pin. The connecting rod seat (34) is fixedly connected to the ball slider (35) by bolts. The connecting rod seat (34) is fixedly connected to the tow hook two (38) by bolts.

6. The clamping mechanism for bellows processing according to claim 1, characterized in that: The upper straightening mold (21) has piston rods (31) on both sides, and the piston rods (31) are fixedly connected to the upper straightening mold (21) with bolts.

7. The clamping mechanism for bellows processing according to claim 1, characterized in that: The base (11) is fixedly connected to the guide rail (36) with bolts.

8. The clamping mechanism for bellows processing according to claim 1, characterized in that: The upper corrective mold (21) and the upper clamping block (27) are movably engaged by guide post (210), and the lower corrective mold (22) and the lower clamping block (28) are movably engaged by guide post (210).

9. The clamping mechanism for bellows processing according to claim 1, characterized in that: Both the upper clamping block (27) and the lower clamping block (28) have corrugated grooves on their inner sides.

10. A clamping mechanism for bellows processing according to claim 2, characterized in that: The two ends of the suspension spring (39) are respectively connected to tow hook one (29) and tow hook two (38).

Images