A floating clamping device for pipe bending machine
Through the design of the floating clamping device, the use of guide grooves and multi-point fixing structure solves the problem of difficulty in fixing pipes of different diameters in existing devices, achieves stable clamping and expands the scope of application, and improves the flexibility and effect of the pipe bending machine.
Patent Information
- Application Number
- CN202310786987.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2043-06-30
AI Technical Summary
The existing pipe bending machine clamping device is difficult to fix pipes of different diameters, especially small-diameter pipes, and the fixing range is limited, which affects the bending effect of the pipe fittings.
A floating clamping device is used, which realizes multi-point fixation of the outside of the pipeline through a combination of guide grooves, base, outer sleeve, support block, support arm, cross brace, compression spring and wedge block, adapting to pipelines of different diameters. The distance between the support arm and the inner sleeve is adjusted through threaded connection and wedge block, expanding the scope of application.
It can achieve a firm clamping of any part of the pipeline to avoid loosening or falling off, expand the scope of application, be suitable for pipelines of different specifications, and improve the clamping effect and stability.
Smart Images
Figure CN116765262B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pipe bending equipment, in particular to a floating clamping device for a pipe bending machine. Background Art
[0002] Pipe bending machines can be broadly categorized into CNC pipe bending machines and hydraulic pipe bending machines. CNC pipe bending machines can perform winding bends on cold pipes with a single or double radius, and are widely used in industries such as automotive and air conditioning. When bending pipes, a clamping device is required to secure the ends of the pipes to prevent them from loosening or falling off during the bending process, which could affect the bending result.
[0003] The existing patent application number: 202122088891.9 discloses a pipe clamping device for a pipe bending machine, which fixes the pipe by supporting the inner wall of the pipe from one end inside the pipe, and can fix pipes of different diameters without the need for staff to frequently configure and replace the clamping device. In the above-mentioned prior art, most of the time, the bending of the pipe only requires bending its local position, and the fixing point needs to be close to the bending part. However, the device can only be fixed at the end of the pipe, and it is difficult to fix other parts of the pipe. In addition, the device can only support and fix pipes with larger diameters, but it is difficult to fix pipes with smaller diameters, and the scope of application is relatively small. Utility Model Content
[0004] The object of the present invention is to provide a floating clamping device for a pipe bending machine to solve the problems raised in the above background technology.
[0005] To achieve the above object, the present invention adopts the following technical solutions:
[0006] The present invention provides a floating clamping device for a pipe bending machine, comprising a pipe bending processing table and a guide groove provided on the pipe bending processing table, wherein a base is provided inside the guide groove, a first outer sleeve and a second outer sleeve are installed on the base, a support block is provided inside the first outer sleeve and the second outer sleeve, an inner sleeve is installed on the support block, a support arm is provided on the first outer sleeve and the second outer sleeve, a cross brace is installed on the support arm, a compression spring is provided on the support arm, a threaded hole is provided at one end of the support arm, and the internal thread of the threaded hole is threadedly installed. There is a support screw, one end of the support screw is installed with an arc-shaped pressure block, the first outer sleeve is equipped with a middle sleeve, the first outer sleeve and the inner wall of the middle sleeve are both provided with thread grooves, and the thread grooves on the first outer sleeve are meshed with the thread grooves on the inner wall of the middle sleeve, and a center groove is formed between the opposite surfaces of the first outer sleeve and the second outer sleeve, the center groove is inside the middle sleeve, a wedge block is installed on the inner wall of the middle sleeve, one side of the wedge block is sleeved inside the center groove, and the width of the center groove is greater than the width of the wedge block and smaller than the width of the middle sleeve.
[0007] Furthermore, one end of the support arm passes through the inner wall of the inner sleeve and extends into the interior thereof, and the support arm is equidistantly arranged on the inner sleeve along the circumference of the inner sleeve.
[0008] Furthermore, the support arms are symmetrically distributed at both ends of the inner sleeve, and both ends of the cross brace are fixedly mounted on the two support arms respectively.
[0009] Furthermore, the compression spring is located between the cross brace and the inner sleeve, and both ends of the compression spring respectively abut against the outer walls of the cross brace and the inner sleeve.
[0010] Furthermore, one side of the middle sleeve is sleeved on the second outer sleeve, and two ends of the wedge block are one high and one low.
[0011] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:
[0012] 1. The present invention uses the guide groove and the base in conjunction with the inner sleeve and other components to press and fix the pipe on the outside. It can fix the pipe near the bend. Regardless of the bend in any position on the pipe, it can be clamped and fixed at the corresponding position on the pipe, and avoid the problem of the pipe being loose or falling off due to the tension generated when the pipe is bent. It can clamp and fix any part of the pipe according to the use requirements and improve the clamping and fixing effect of the pipe.
[0013] 2. The present invention uses a plurality of groups of equidistantly arranged support arms and support screws in conjunction with arc-shaped pressure blocks and other components. When fixing a larger-diameter pipe, the support screws can be completely retracted into the support arms. Through the threaded connection between the middle sleeve and the first outer sleeve, the middle sleeve is screwed and the distance between the support arm and the inner sleeve axis is adjusted in conjunction with the wedge block, thereby achieving the fixation of larger-diameter pipes of various specifications. When fixing smaller-diameter pipes, the support screws only need to be extended from the support arms to an appropriate length to fix various small-diameter pipes, greatly expanding its scope of use.
[0014] 3. The present invention adjusts the length direction of the arc-shaped pressing block to be consistent with the direction of the axis of the inner sleeve, and then uses the support screw to adjust the distance between the arc-shaped pressing block and the support arm to the maximum state, so that the pipe with a diameter of 3 / 4 times the width of the arc-shaped pressing block can be clamped, thereby expanding the lower limit of the applicable range of the device. The upper limit value is less than the difference between the inner sleeve diameter and the thickness of the two arc-shaped pressing blocks. Pipes of any diameter within this range can be clamped and fixed. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0016] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention;
[0017] Figure 3 for Figure 2 A top view of
[0018] Figure 4 It is a schematic diagram of the internal structure of the present invention;
[0019] Figure 5 for Figure 3 main view.
[0020] In the figure: 1. Guide groove; 2. Bending table; 3. Base; 4. Support block; 5. Inner sleeve; 6. First outer sleeve; 7. Middle sleeve; 8. Center slot; 9. Wedge block; 10. Support arm; 11. Cross brace; 12. Compression spring; 13. Threaded hole; 14. Support screw; 15. Arc pressure block; 16. Second outer sleeve. DETAILED DESCRIPTION
[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.
[0022] like Figures 1 to 5As shown, a floating clamping device for a pipe bending machine includes a pipe bending processing table 2 and a guide groove 1 provided on the pipe bending processing table 2, a base 3 is provided inside the guide groove 1, a first outer sleeve 6 and a second outer sleeve 16 are installed on the base 3, a support block 4 is provided inside the first outer sleeve 6 and the second outer sleeve 16, an inner sleeve 5 is installed on the support block 4, a support arm 10 is provided on the first outer sleeve 6 and the second outer sleeve 16, a cross brace 11 is installed on the support arm 10, a compression spring 12 is provided on the support arm 10, a threaded hole 13 is provided at one end of the support arm 10, a support screw 14 is installed on the internal thread of the threaded hole 13, and the guide groove 1 and the base 3 are used in conjunction with the inner sleeve 5 and other components to press and fix the pipe on the outside, and can be fixed at a position close to the bending part of the pipe. Regardless of the bending part being at any position on the pipe, it can be fixed on the pipe. The corresponding parts of the pipe are clamped and fixed, and the problem of the pipe being easily loosened or falling off due to the tension generated when the pipe is bent is avoided. It can not only clamp and fix any part of the pipe according to the use requirements, but also improve the clamping and fixing effect of the pipe. An arc-shaped pressing block 15 is installed at one end of the support screw 14, and a middle sleeve 7 is assembled on the first outer sleeve 6. A wedge block 9 is installed on the inner wall of the middle sleeve 7. By adjusting the length direction of the arc-shaped pressing block 15 to be consistent with the direction of the axis of the inner sleeve 5, and then cooperating with the support screw 14 to adjust the distance between the arc-shaped pressing block 15 and the support arm 10 to the maximum state, the pipe with a diameter of 3 / 4 times the width of the arc-shaped pressing block 15 can be compressed, thereby expanding the applicable lower limit range of the device, and its upper limit value is less than the inner sleeve diameter minus the difference between the thickness of the two arc-shaped pressing blocks. Pipes of any diameter within this range can be clamped and fixed.
[0023] In this embodiment, a central groove 8 is formed between the opposing surfaces of the first outer sleeve 6 and the second outer sleeve 16. The central groove 8 is located inside the middle sleeve 7. A certain space is reserved by the central groove 8. When the user twists the middle sleeve 7, it can be rotated and moved linearly at the same time, which facilitates the normal progress of the pipeline fixing operation. It can also limit the linear movement distance of the middle sleeve 7 to prevent its linear movement distance from being too long, causing the wedge block 9 to completely pass through the outer wall of the cross brace 11 and the inner wall of the middle sleeve 7, thereby affecting the second pipeline fixing operation.
[0024] In this embodiment, one side of the wedge block 9 is inserted into the middle groove 8, and the width of the middle groove 8 is greater than the width of the wedge block 9 and smaller than the width of the middle sleeve 7. The side of the outer wall of the wedge block 9 away from the middle sleeve 7 is an arcuate surface, and the side of the outer wall of the wedge block 9 away from the middle sleeve 7 conflicts with the outer wall of the cross brace 11. When the user turns the middle sleeve 7 clockwise, it drives the wedge block 9 to rotate and move linearly synchronously, so that the arcuate surface of the wedge block 9 and the surface of the cross brace 11 move relative to each other.
[0025] In this embodiment, thread grooves are provided on the inner walls of the first outer sleeve 6 and the middle sleeve 7, and the thread grooves on the first outer sleeve 6 are engaged with the thread grooves on the inner wall of the middle sleeve 7. When the pipeline is fixed, the threaded connection between the first outer sleeve 6 and the middle sleeve 7 can make the wedge block 9 remain in the adjusted state by utilizing the threaded engagement between the two after the pipeline is firmly clamped, thereby avoiding the reaction of pressure causing it to reverse and causing the pipeline fixation to become loose, thereby achieving a self-locking effect.
[0026] In this embodiment, one end of the support arm 10 passes through the inner wall of the inner sleeve 5 and extends into the interior thereof, and the support arm 10 is equidistantly arranged on the inner sleeve 5 along the circumference of the inner sleeve 5. By utilizing a plurality of axially symmetrical support arms, a multi-point synchronous clamping and fixing effect of the outer wall of the pipeline can be achieved. When the pipeline is bent, the problem of the pipeline being loosened in its fixed position due to other stresses is avoided, thereby improving the stability of the pipeline fixing operation.
[0027] In this embodiment, the support arms 10 are symmetrically distributed at both ends of the inner sleeve 5, and the two ends of the cross brace 11 are fixedly mounted on the two support arms 10 respectively. By using a plurality of groups of equidistant circumferentially arranged support arms 10 and support screws 14 in conjunction with arc-shaped pressure blocks 15 and other components, when fixing a larger diameter pipe, the support screws 14 can be completely retracted into the support arms 10. By threading the middle sleeve 7 and the first outer sleeve 6, the middle sleeve 7 is screwed and the wedge block 9 is used to adjust the distance between the axis of the support arm 10 and the inner sleeve 5, so as to fix larger diameter pipes of various specifications. When fixing smaller diameter pipes, it is only necessary to extend the support screws 14 from the support arms 10 to a suitable length to fix small diameter pipes of various specifications, thereby greatly expanding its scope of use.
[0028] In this embodiment, the compression spring 12 is located between the cross brace 11 and the inner sleeve 5, and the two ends of the compression spring 12 respectively contact the outer walls of the cross brace 11 and the inner sleeve 5. During the process of clamping and fixing the pipeline, the compression spring 12 shortens and deforms under the pressure of the wedge block 9 and accumulates elastic force. When the pipeline needs to be removed after bending, the elastic force accumulated in the compression spring 12 will push the cross brace 11 to reset. When the cross brace 111 resets and moves, it will drive the support arm 10 and the arc-shaped pressure block 15 to reset synchronously, releasing the fixed state of the arc-shaped pressure block 15 on the outer wall of the pipeline, thereby facilitating the replacement of the pipeline.
[0029] In this embodiment, one side of the middle sleeve 7 is sleeved on the second outer sleeve 16, and the two ends of the wedge block 9 are one high and one low. When the wedge block 9 rotates clockwise, the lower end will pass between the cross brace 11 and the inner wall of the middle sleeve 7, making the thickness of the cross brace 11 inserted between the two increasingly larger, and press the cross brace 11 toward the axis of the inner sleeve 5, and make the compression spring 12 elastically shorten and deform, accumulating elastic force, and multiple wedge blocks 9 equidistantly distributed on the inner wall of the middle sleeve 7 will make the cross brace 11 corresponding to its number and position perform the above-mentioned action synchronously, so that the multiple support arms 10 drive the multiple support screws 14 and the arc-shaped pressure block 15 synchronously inward. The inside of the sleeve 5 is gathered together to achieve clamping and fixing of the pipe, and the support arm 10 is pushed to the limit by the wedge block 9, when the distance between the arc pressure block 15 and the axis of the inner sleeve 5 is at the minimum value. At this time, the radius of the pipe to be fixed is smaller than the distance between the two. The elongation of the support screw 14 can be adjusted so that the arc pressure block 15 can be pressed against the outer wall of the pipe with a smaller diameter, thereby achieving the fixing operation of small-diameter pipes of various specifications, and expanding the range of its fixed pipe specifications to a smaller value. When one side of the arc pressure block 15 is attached to the inner wall of the inner sleeve 5, the distance between the two opposite arc pressure blocks 15 is the maximum diameter of the pipe that can be fixed.
[0030] The above description is merely a preferred embodiment of the present invention. Any portion not described herein may be implemented by adopting or drawing upon existing technologies. Of course, the above description is not intended to limit the present invention, nor is the present invention limited to the above examples. Any changes, modifications, additions, or substitutions made by those skilled in the art within the spirit and scope of the present invention shall also fall within the scope of protection of the present invention.
Claims
1. A floating clamping device for a pipe bending machine, comprising a pipe bending processing table (1) and a guide groove (2) provided on the pipe bending processing table (1), wherein a base (3) is provided inside the guide groove (2), and characterized in that: The base (3) is provided with a first outer sleeve (6) and a second outer sleeve (16), the first outer sleeve (6) and the second outer sleeve (16) are provided with a support block (4), the support block (4) is provided with an inner sleeve (5), the first outer sleeve (6) and the second outer sleeve (16) are provided with a support arm (10), the support arm (10) is provided with a cross brace (11), the support arm (10) is provided with a compression spring (12), one end of the support arm (10) is provided with a threaded hole (13), the inner thread of the threaded hole (13) is provided with a support screw (14), one end of the support screw (14) is provided with an arc-shaped pressure block (15), the first outer sleeve (6) is provided with a middle sleeve (7), the first outer sleeve (6) and the inner wall of the middle sleeve (7) are provided with a threaded groove, and the threaded groove on the first outer sleeve (6) and the middle sleeve ( 7) The thread grooves on the inner wall are meshed with each other, and the thread meshing action is used to keep the wedge block (9) in the adjusted state, preventing the wedge block (9) from being reversed due to the reaction of pressure, resulting in loosening of the pipeline fixation, and achieving a self-locking effect. A central groove (8) is formed between the opposite surfaces of the first outer sleeve (6) and the second outer sleeve (16), and the central groove (8) is located inside the middle sleeve (7). A wedge block (9) is installed on the inner wall of the middle sleeve (7), and one side of the wedge block (9) is sleeved inside the central groove (8). The width of the central groove (8) is greater than the width of the wedge block (9) and smaller than the width of the middle sleeve (7). The central groove (8) can reserve a certain space for the axial linear movement of the middle sleeve (7), thereby limiting the linear movement distance of the middle sleeve (7) and preventing the wedge block (9) from completely passing through between the outer wall of the cross brace (11) and the inner wall of the middle sleeve (7).
2. The floating clamping device for a pipe bender according to claim 1, characterized in that: One end of the support arm (10) penetrates the inner wall of the inner sleeve (5) and extends into the interior thereof, and the support arm (10) is arranged on the inner sleeve (5) at equal intervals along the circumference of the inner sleeve (5).
3. The floating clamping device for a pipe bender according to claim 2, characterized in that: The support arms (10) are symmetrically distributed at both ends of the inner sleeve (5), and both ends of the cross brace (11) are fixedly mounted on the two support arms (10), respectively.
4. The floating clamping device for a pipe bender according to claim 1, characterized in that: The compression spring (12) is located between the cross brace (11) and the inner sleeve (5), and two ends of the compression spring (12) respectively contact the outer walls of the cross brace (11) and the inner sleeve (5).
5. The floating clamping device for a pipe bender according to claim 1, characterized in that: One side of the middle sleeve (7) is sleeved on the second outer sleeve (16), and the two ends of the wedge block (9) are one high and one low.