Bent pipe positioning and machining jig
By combining the inner cavity limiter and outer wall limiter structures of the elbow positioning processing fixture, the problem of unstable elbow positioning is solved, stable positioning and processing of elbows of different sizes are achieved, and costs are reduced.
Patent Information
- Application Number
- CN202422102777.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In pipe bending production, due to the irregular outer wall of some products or the excessive processing surface, there is no reliable positioning point outside the pipe wall. In addition, the outer walls of different types of bent pipes are different, resulting in unstable fixation of the profiling surface points, affecting the stability of the product processing wall thickness and high costs.
A pipe bending positioning processing fixture is designed, which combines the inner cavity limiting structure and the outer wall limiting structure. Multi-point fixation is achieved through the clamping jaws designed with inclined grooves. It is suitable for workpieces of different sizes and ensures stable positioning of the workpiece.
It achieves effective positioning of elbows of different sizes, ensures processing stability and cost-effectiveness, and is suitable for professional and safe production.
Smart Images
Figure CN223354019U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a positioning and processing jig for bent pipes. Background Art
[0002] In pipe bending production, there is no reliable positioning point outside the pipe wall due to the irregular outer wall of some products or the excessive processing surface. At the same time, since the outer walls of different types of pipe bends are different, if a contoured surface is designed as a support point for each type of pipe bend, the cost is too high and the irregular size of the blank leads to unstable fixation of the contoured surface support point, which in turn leads to unstable wall thickness of the product processing. Utility Model Content
[0003] In view of this, the purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a bending pipe positioning processing jig with a reasonable design. By combining the inner cavity limiting structure with the outer wall limiting structure, the effective positioning of the pipe can be achieved. At the same time, the inclined groove is used to facilitate the clamping claws to extend outward or clamp inward. It is suitable for workpieces of different sizes and ensures stable rear end positioning of the workpiece.
[0004] The utility model is implemented by the following scheme: a bent pipe positioning processing jig: including a base, a clamping mechanism for clamping one end of the bent pipe is installed on the base, a limiting mechanism for fixing the bent pipe is installed on the base, the limiting mechanism includes an inner cavity limiting structure and an outer wall limiting structure, the inner cavity limiting structure is installed on the clamping mechanism, and the outer wall limiting structure is installed on the base.
[0005] Furthermore, the inner cavity limiting structure includes a mounting seat, a stepped groove is provided on the mounting seat corresponding to the end of the bent pipe, an arc-shaped support rod is installed on the bottom of the stepped groove for extending into the workpiece for support, and a pin shaft is provided on the end of the arc-shaped support rod for abutting the inner wall of the bent pipe, and the end of the pin shaft is an arc head.
[0006] Furthermore, the outer wall limiting structure includes a plurality of support columns, and an abutment screw is horizontally placed on the upper end of the support column, and the end of the abutment screw abuts against the outer wall of the bent pipe.
[0007] Furthermore, the outer wall limiting structure also includes a horizontal structural reinforcement plate, and the structural reinforcement plate is fixedly connected to the lower part of each support column.
[0008] Furthermore, the support column includes a column body, a base plate is provided at the bottom of the column body, a threaded hole is horizontally opened at the upper end of the column body toward the outer wall of the bent pipe, an abutment screw is rotatably connected in the threaded hole, and a rotating handle is fixedly connected to the end of the abutment screw away from the outer wall of the bent pipe.
[0009] Furthermore, the clamping mechanism includes a vertically fixed limit plate, the mounting seat is vertically fixed on the side of the limit plate close to the outer wall limit structure, and a claw plate is provided on the side of the limit plate away from the mounting seat. The claw plate has three groups of protruding handles fixed at intervals along its outer periphery, and the ends of the protruding handles are hinged with clamping claws, and the clamping claws pass through the limit plate and are hook-shaped at the ends to clamp the workpiece on the limit seat.
[0010] Furthermore, a threaded hole is provided through the center of the claw plate and is screwed with a screw, and the end of the screw is rotatably connected to the limit plate; the limit plate is provided with a clearance groove for three groups of jaws to pass through, and the jaws are rotatably connected to the limit plate through the guide pin in the clearance groove, and the jaws are provided with an inclined groove that cooperates with the guide pin to facilitate the jaws to extend outward or clamp inward.
[0011] Furthermore, a slide seat rotatably connected to the end of the screw is fixed on the limit plate, and a slide groove is opened on the top of the slide seat from top to bottom. The end of the screw restricts axial freedom in the slide groove but is vertically slidably connected to the limit plate.
[0012] Furthermore, a clamping groove is provided on the mounting seat at a peripheral side of the stepped groove corresponding to the clamping claw.
[0013] Furthermore, the size of the said clearance grooves is larger than the size of the clamping jaws to allow the clamping jaws to be adaptively displaced, and the angles between adjacent lugs are consistent.
[0014] Compared with the prior art, the utility model has the following beneficial effects: reasonable design, reasonable design, through the combination of the inner cavity limiting structure and the outer wall limiting structure, the effective positioning of the pipe fitting is achieved, and at the same time, the inclined groove is used to facilitate the clamping claws to extend outward or clamp inward, which is suitable for workpieces of different sizes and ensures stable rear-end positioning of the workpiece, facilitating professional and safe production. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;
[0016] Figure 2 A schematic top view of an embodiment of the present utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the embodiment of the utility model after removing the workpiece;
[0018] Figure 4 This is a schematic diagram of the structure of the mounting base in an embodiment of the present utility model;
[0019] Figure 5 This is a schematic diagram of the connection between the claw plate and the clamping claw in the embodiment of the present utility model;
[0020] Figure 6 Schematic diagram of the structure of the limiting plate in the embodiment of the present utility model.
[0021] In the figure: 1-base; 2-clamping mechanism; 3-limiting mechanism; 4-inner cavity limiting structure; 5-outer wall limiting structure; 6-mounting seat; 7-step groove; 8-arc-shaped support rod; 9-pin shaft; 10-support column; 11-abutting screw; 12-structural reinforcement plate; 13-column; 14-bottom plate; 15-threaded hole; 16-rotating handle; 17-limiting plate; 18-claw plate; 19-protruding handle; 20-clamping claw; 21-elbow; 22-threaded hole; 23-screw; 24-gap groove; 25-slide; 26-slide groove; 27-clamping groove; 28-guide pin; 29-bevel groove. DETAILED DESCRIPTION
[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0023] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.
[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0025] like Figure 1-6 As shown, a bend pipe positioning processing jig comprises a base 1, on which is mounted a clamping mechanism 2 for clamping one end of the bend pipe, and on which is mounted a limiting mechanism 3 for fixing the bend pipe, wherein the limiting mechanism comprises an inner cavity limiting structure 4 and an outer wall limiting structure 5, wherein the inner cavity limiting structure is mounted on the clamping mechanism, and the outer wall limiting structure is mounted on the base. When in use, the end of the bend pipe is fixed by the clamping mechanism, and at the same time, the multi-point fixation of the inner cavity limiting structure and the outer wall limiting structure is coordinated to ensure high efficiency and stability of clamping.
[0026] In this embodiment, the inner cavity limiting structure includes a mounting seat 6, and a stepped groove 7 is provided on the mounting seat corresponding to the end of the bent pipe. The stepped groove is used to limit one end of the bent pipe, and an arc-shaped support rod 8 for extending into the workpiece for support is installed on the bottom of the stepped groove. A pin shaft 9 for abutting the inner wall of the bent pipe is provided on the end of the arc-shaped support rod, and the end of the pin shaft is an arc head. At the same time, the outer wall limiting structure includes a plurality of support columns 10, and an abutting screw 11 is horizontally placed on the upper end of the support column, and the end of the abutting screw abuts on the outer wall of the bent pipe. This device adopts three groups of support columns, and the three groups of support columns are distributed on the outer periphery of the bent pipe clamped in a good position on the mounting seat. When in use, the inner wall of the bent pipe is first abutted by the pin shaft, and then the outer wall is fixed by the abutting screw to achieve multi-point clamping and ensure stable clamping.
[0027] In this embodiment, in order to improve the design and increase the structural stability of the outer wall limiting structure, the outer wall limiting structure further includes a horizontal structural reinforcement plate 12, which is fixedly connected to the lower part of each support column.
[0028] In this embodiment, the specific support column structure is as follows: the support column includes a column body 13, a base plate 14 is provided at the bottom of the column body, the base plate is fixed on the base, and a threaded hole 15 is horizontally opened at the upper end of the column body toward the outer wall of the bent pipe, and an abutment screw is rotatably connected in the threaded hole, and a rotating handle 16 is fixedly connected to the end of the abutment screw away from the outer wall of the bent pipe. When in use, the contact between the abutment screw and the outer wall of the bent pipe is achieved by rotating the rotating handle.
[0029] In this embodiment, the clamping mechanism includes a vertically fixed limit plate 17, the mounting seat is vertically fixed on the side of the limit plate close to the outer wall limit structure, and a claw plate 18 is provided on the side of the limit plate away from the mounting seat. The claw plate is fixed with three groups of protruding handles 19 at intervals along its outer periphery, and the ends of the protruding handles are hinged with clamping claws 20. The clamping claws all pass through the limit plate and are hook-shaped at the ends to clamp the bent pipe 21 on the limit seat.
[0030] In this embodiment, a threaded hole 22 is formed through the center of the claw plate and is screwed with a screw 23, and the end of the screw is rotatably connected to the limit plate; the limit plate is provided with a clearance groove 24 for three groups of jaws to pass through, and the jaws are rotatably connected to the limit plate through a guide pin 28 in the clearance groove, and the jaws are provided with an inclined groove 29 that cooperates with the guide pin to facilitate the jaws to extend outward or clamp inward, and a rotating handle is also provided on the outer end of the screw.
[0031] In this embodiment, the inclined grooves are all in the shape of inclined strip holes, and the oblique extension direction is all from the back to the front and obliquely inward, that is, after the screw is turned forward, the claw plate moves backward, driving the clamping jaw to move backward. At the same time, the front end gradually moves toward the middle under the action of the inclined groove and is finally clamped on the workpiece after passing through the clamping groove. When the workpiece needs to be loosened, the screw is rotated in the opposite direction, and the claw plate moves forward, driving the clamping jaw forward. During the forward movement of the clamping jaw, the front end is guided by the action of the inclined groove to open to accommodate the installation of the replaced workpiece.
[0032] In this embodiment, a slide 25 is fixedly provided on the limit plate and is rotatably connected to the end of the screw. A slide groove 26 is provided on the top of the slide from top to bottom. The end of the screw limits the axial freedom in the slide groove but is vertically slidably connected to the limit plate, that is, the end of the screw can be connected to the bearing and slide from top to bottom into the convex slide groove through the bearing end to limit the axial position of the screw, and make the screw rotatably connected to the slide and slide vertically within a certain range.
[0033] In this embodiment, for a reasonable design, a clamping groove 27 is formed on the mounting seat at the circumferential side of the stepped groove corresponding to the clamping claw.
[0034] In this embodiment, the size of the clearance groove is larger than the size of the clamping jaw to allow the clamping jaw to be adaptively displaced, and the angles between adjacent protruding handles are consistent.
[0035] In this embodiment, the tubular workpiece is first inserted along the arc-shaped support rod, and the rear end is connected to the stepped groove. Then, the screw is turned forward to move the claw plate backward, driving the clamping jaw to move backward. At the same time, the front end gradually moves toward the middle under the action of the inclined groove and is finally clamped on the workpiece after passing through the clamping groove, completing the clamping of the rear end of the workpiece. By turning the rotating handle, the contact between the abutting screw and the outer wall of the bent pipe is achieved. At this time, the pin shaft is also connected to the inner wall of the workpiece, completing the clamping of the front end of the workpiece, and further processing of the workpiece can be carried out; when the workpiece needs to be loosened, the screw is rotated in the opposite direction, and the claw plate moves forward to drive the clamping jaw forward. During the forward movement, the front end of the clamping jaw is guided by the action of the inclined groove to open to ensure the installation space for the next workpiece.
[0036] If words such as "first" and "second" are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish between components. Unless otherwise stated, the above words have no special meaning.
[0037] If the present invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by integral molding using a casting process) (except where it is obviously not possible to use an integrated molding process).
[0038] In addition, the orientations or positional relationships indicated by terms such as "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" used in any of the technical solutions disclosed in the above-mentioned utility model are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this patent. Unless otherwise stated, the terms used to indicate shapes used in any of the technical solutions disclosed in the above-mentioned utility model include shapes that are approximate, similar, or close to them.
[0039] Any component provided by the present invention can be assembled from multiple separate components, or can be a separate component manufactured by an integral forming process.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for which protection is requested in the utility model.
Claims
1. A pipe bending positioning tool, characterized by: The device comprises a base, a clamping mechanism for clamping one end of the elbow is installed on the base, a limiting mechanism for fixing the elbow is installed on the base, the limiting mechanism comprises an inner cavity limiting structure and an outer wall limiting structure, the inner cavity limiting structure is installed on the clamping mechanism, and the outer wall limiting structure is installed on the base; The inner cavity limiting structure includes a mounting seat, a stepped groove is provided on the mounting seat corresponding to the end of the bent pipe, an arc-shaped support rod is installed on the bottom of the stepped groove for extending into the workpiece for support, and a pin is provided on the end of the arc-shaped support rod for abutting the inner wall of the bent pipe, and the end of the pin is an arc head; The outer wall limiting structure includes a plurality of support columns, and an abutting screw is horizontally placed on the upper end of the support column, and the end of the abutting screw abuts against the outer wall of the bent pipe.
2. The pipe bending positioning tool according to claim 1, characterized in that: The outer wall limiting structure also includes a horizontal structural reinforcement plate, which is fixedly connected to the lower part of each support column.
3. The pipe bending positioning tool according to claim 1, characterized in that: The support column includes a column body, a bottom plate is provided at the bottom of the column body, a threaded hole is horizontally opened at the upper end of the column body toward the outer wall of the bent pipe, an abutment screw is rotatably connected in the threaded hole, and a rotating handle is fixedly connected to the end of the abutment screw away from the outer wall of the bent pipe.
4. The pipe bending positioning tool according to claim 1, characterized in that: The clamping mechanism includes a vertically fixed limit plate, the mounting seat is vertically fixed on the side of the limit plate close to the outer wall limit structure, and a claw plate is provided on the side of the limit plate away from the mounting seat. The claw plate is fixed with three groups of protruding handles at intervals along its outer periphery, and the ends of the protruding handles are hinged with clamping claws, and the clamping claws pass through the limit plate and are hook-shaped at the ends to clamp the workpiece on the limit seat.
5. The pipe bending positioning tool according to claim 4, characterized in that: A threaded hole is provided through the center of the claw plate and is screwed with a screw, and the end of the screw is rotatably connected to the limit plate; the limit plate is provided with a clearance groove for three groups of jaws to pass through respectively, and the jaws are rotatably connected to the limit plate through the guide pins in the clearance grooves, and the jaws are provided with an oblique groove that cooperates with the guide pin to facilitate the jaws to extend outward or clamp inward.
6. The pipe bending positioning tool according to claim 5, characterized in that: The limit plate is fixed with a slide seat rotatably connected to the end of the screw, and a slide groove is opened on the top of the slide seat from top to bottom. The end of the screw restricts axial freedom in the slide groove but is vertically slidably connected to the limit plate.
7. The pipe bending positioning tool according to claim 5, characterized in that: The mounting seat is provided with a clamping groove on the peripheral side of the stepped groove corresponding to the clamping claw.
8. The pipe bending positioning tool according to claim 5, characterized in that: The size of the reciprocating groove is larger than the size of the clamping jaw to allow the clamping jaw to be adaptively displaced, and the angles between adjacent protruding handles are consistent.