Reverse clamping and positioning device for tubular part

Abstract

The utility model relates to a reverse clamping and positioning device for a tubular part. The reverse clamping and positioning device comprises a guide sleeve (1), a guide rod (2) and a clamping and positioning assembly. The guide sleeve (1) is connected with the guide rod (2); the clamping and positioning assembly abuts against the guide rod (2). The guide sleeve (1) is connected with the clamping and positioning assembly; the clamping and positioning assembly comprises a ball head plunger (3), a mechanical reset spring (4) and a tensioning block (5). The ball head plunger (3) is connected with the tensioning block (5); the mechanical reset spring (4) is arranged on the outer side of the tensioning block (5) in a sleeving mode. Compared with the prior art, the reverse clamping and positioning device for the tubular part can clamp the tubular part from the inner side by arranging the guide sleeve (1), the guide rod (2) and the clamping and positioning assembly, and is simple in structure, convenient to install, stable in performance, low in labor cost and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing, in particular to a reverse clamping and positioning device for tubular parts. Background Art

[0002] During the processing and production of pipe fittings (tubular parts), the pipe fittings need to be clamped and fixed by a pipe fitting clamping device. For example, CN219747629U discloses a pipe fitting clamping device, including a base and a driving member, the base is provided with a fixed clamping die seat and a movable clamping die seat that can move relative to the fixed clamping die seat, the fixed clamping die seat is provided with a fixed clamping die, the movable clamping die seat is provided with a movable clamping die, and the base is slidably connected with a first push rod and a second push rod; one end of the first push rod is connected to the driving member, and the other end of the first push rod is provided with a first guiding inclined surface; one end of the second push rod is connected to the movable clamping die seat, and the other end of the second push rod is provided with a second guiding inclined surface that matches the first guiding inclined surface; a tension spring reset mechanism is provided between the movable clamping die seat and the base. For another example, CN214292063U discloses a clamping device for pipe processing, comprising a fixed frame, a base and a clamping mechanism, wherein the fixed frame is fixed on the base, the clamping mechanism is arranged in the fixed frame, the clamping mechanism comprises a movable clamping block and a positioning clamping block, a height adjustment member is arranged between the movable clamping block and the fixed frame, the positioning clamping block is fixed on the fixed frame, and an adjustment cavity is formed in both the movable clamping block and the positioning clamping block, and an adjustable clamping assembly is arranged in the adjustment cavity. Most of the existing pipe clamping devices clamp and position by means of a clamping member on the outside of the pipe.

[0003] With the popularization of industrial automation, production lines have higher and higher requirements for automated production, and the requirements for clamping and positioning of various parts are becoming more and more diversified. For the processing of some tubular parts with special requirements, such as layers on the surface, the outer layer does not allow clamping and positioning, and there are special processes on the outside, which cannot be clamped on the outside. A reliable solution is needed to solve the clamping and positioning of tubular parts. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned prior art and to provide a reverse clamping and positioning device for tubular parts. By arranging a guide sleeve, a guide rod, and a clamping and positioning assembly, the tubular parts can be clamped from the inside. The utility model has a simple structure, convenient installation, stable performance, low labor cost and long service life.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The purpose of the utility model is to provide a reverse clamping and positioning device for tubular parts, the reverse clamping and positioning device comprises a guide sleeve, a guide rod, and a clamping and positioning assembly; the guide sleeve is connected to the guide rod; the clamping and positioning assembly abuts against the guide rod; the guide sleeve is connected to the clamping and positioning assembly; the clamping and positioning assembly comprises a ball plunger, a mechanical return spring, and a tensioning block; the ball plunger is connected to the tensioning block; the mechanical return spring is sleeved on the outside of the tensioning block.

[0007] Furthermore, the reverse clamping and positioning device also includes a driving member; the driving member is connected to the guide rod; the driving member is used to drive the guide rod to move.

[0008] Furthermore, the driving member is a driving linear cylinder (linear driving cylinder).

[0009] Furthermore, the ball plunger is provided with an external thread; the tension block is provided with an internal thread matching the external thread of the ball plunger; the ball plunger and the tension block are connected via threads.

[0010] Furthermore, the guide sleeve is sleeved on the outside of the guide rod; the guide sleeve is sleeved on the outside of the clamping and positioning assembly.

[0011] Furthermore, the guide sleeve can be slidably mounted on the outside of the guide rod; the guide sleeve can be slidably mounted on the outside of the clamping and positioning assembly.

[0012] Furthermore, the tensioning block includes a clamping positioning part, a spring sleeve part, and a spring limiting part which are connected in sequence; the clamping positioning part is used to abut against the inner wall of the tubular part; the mechanical return spring is sleeved on the outside of the spring sleeve part; the ball head plunger is connected to the spring sleeve part and the spring limiting part.

[0013] Furthermore, the clamping and positioning portion is an arc-shaped plate.

[0014] Furthermore, the guide rod is a tapered guide rod, and the head end of the guide rod is a cone.

[0015] Furthermore, multiple groups of clamping and positioning components are provided; the multiple groups of clamping and positioning components are evenly arranged along the circumference of the guide sleeve.

[0016] Furthermore, three groups of clamping and positioning components are provided; the three groups of clamping and positioning components are evenly arranged along the circumference of the guide sleeve, that is, the angle between two adjacent groups of clamping and positioning components is 120°.

[0017] Furthermore, a first slideway is provided in the guide sleeve, and the guide sleeve is slidably connected to the first slideway.

[0018] Furthermore, a second slideway is provided in the guide sleeve, and the ball plunger and the tensioning block are slidably connected to the second slideway.

[0019] Furthermore, the mechanical return spring is arranged in the second slide, the second slide includes a limiting wall, the two ends of the limiting wall are connected to the first side wall and the second side wall, the diameter of the first side wall is larger than the second side wall, one end of the mechanical return spring is connected to the limiting wall, and the other end is connected to the spring limiting part of the tensioning block, and the two ends of the mechanical return spring are limited between the limiting wall and the spring limiting part.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1) The technical solution provides a reverse clamping and positioning device for tubular parts. By setting a guide sleeve, a guide rod, and a clamping and positioning assembly, after the guide rod is extended, the clamping and positioning assembly abutting the guide rod is pushed to open outward, and the guide sleeve is extended from the outside of the clamping and positioning assembly, which can abut against the inner wall of the tubular part from the inside to clamp the tubular part. The structure is simple and the installation is convenient. This device can achieve reverse tensioning of tubular parts and avoid surface defects caused by external tightening.

[0022] 2) The technical solution provides a reverse clamping and positioning device for tubular parts, which has stable performance, low labor cost and long service life.

[0023] 3) The reverse clamping and positioning device for tubular parts provided by the technical solution has a very simple structure and achieves the effect of meeting complex processes through the most basic mechanical structure. The overall size is relatively compact. The simple structure is also very easy for workers to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front cross-sectional schematic diagram of the reverse clamping and positioning device for tubular parts in an embodiment of the utility model in an open state.

[0025] Figure 2 It is a side cross-sectional schematic diagram of the reverse clamping and positioning device for tubular parts in an embodiment of the utility model in an open state.

[0026] Figure 3 It is a front cross-sectional schematic diagram of a tensioned state of a reverse clamping and positioning device for tubular parts in an embodiment of the utility model.

[0027] Figure 4 It is a side cross-sectional schematic diagram of the reverse clamping and positioning device for tubular parts in the embodiment of the utility model in the tensioned state.

[0028] in:

[0029] 1. Guide sleeve; 2. Guide rod; 3. Ball plunger; 4. Mechanical return spring; 5. Tensioning block; 5-1. Clamping and positioning part; 5-2. Spring sleeve connection part; 5-3. Spring limiting part; 6. Driving linear cylinder; 6-1. Cylinder body; 6-2. Output shaft; 7. Second slideway; 7-1. Limiting wall; 8. First slideway. DETAILED DESCRIPTION

[0030] The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. The features such as component models, material names, connection structures, etc. that are not clearly described in this technical solution are all regarded as common technical features disclosed in the prior art.

[0031] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements; "up", "down", "left", "right" and the like are only used to indicate relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may change. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] It should be noted that, in the present utility model, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The content of the utility model is further described in detail below in conjunction with specific embodiments.

[0034] Example

[0035] like Figures 1 to 4As shown, in this embodiment, a reverse clamping and positioning device for tubular parts is provided, and the reverse clamping and positioning device comprises a guide sleeve 1, a guide rod 2, and a clamping and positioning assembly; the guide sleeve 1 is connected to the guide rod 2; the clamping and positioning assembly abuts against the guide rod 2; the guide sleeve 1 is connected to the clamping and positioning assembly; the clamping and positioning assembly comprises a ball plunger 3, a mechanical return spring 4 (return spring), and a tensioning block 5; the ball plunger 3 is connected to the tensioning block 5; the mechanical return spring 4 is sleeved on the outside of the tensioning block 5.

[0036] The reverse clamping positioning device also includes a driving member; the driving member is connected to the guide rod 2; the driving member is used to drive the guide rod 2 to move. The driving member is a driving linear cylinder 6 (linear driving cylinder), and the driving linear cylinder 6 includes a cylinder body 6-1 and an output shaft 6-2 connected to the cylinder body 6-1, the cylinder body 6-1 is fixedly connected to the guide sleeve 1, the output shaft 6-2 penetrates into the guide sleeve 1, and the output shaft 6-2 is fixedly connected to the guide rod 2.

[0037] The ball plunger 3 is provided with an external thread; the tension block 5 is provided with an internal thread matching the external thread of the ball plunger 3; the ball plunger 3 and the tension block 5 are connected via threads.

[0038] The guide sleeve 1 is sleeved on the outside of the guide rod 2; the guide sleeve 1 is sleeved on the outside of the clamping and positioning assembly.

[0039] The guide sleeve 1 can be slidably mounted on the outside of the guide rod 2; the guide sleeve 1 can be slidably mounted on the outside of the clamping and positioning assembly.

[0040] The tensioning block 5 includes a clamping positioning part 5-1, a spring sleeve part 5-2, and a spring limiting part 5-3 which are connected in sequence; the clamping positioning part 5-1 is used to abut against the inner wall of the tubular part; the mechanical return spring 4 is sleeved on the outside of the spring sleeve part 5-2; the ball head plunger 3 is connected to the spring sleeve part 5-2 and the spring limiting part 5-3.

[0041] The clamping and positioning portion 5 - 1 is an arc-shaped plate.

[0042] The guide rod 2 is a tapered guide rod 2 , the head end of the guide rod 2 is a cone, the tail end of the guide rod 2 is a cylinder, the head end and the tail end are integrally connected, and the tensioning block 5 abuts against the head end.

[0043] Three groups of clamping and positioning components are arranged in the same plane; the three groups of clamping and positioning components are evenly arranged along the circumference of the guide sleeve 1, that is, the angle between two adjacent groups of clamping and positioning components is 120°.

[0044] A first slideway 8 is provided in the guide sleeve 1 , and the guide sleeve 1 is slidably connected to the first slideway 8 .

[0045] The guide sleeve 1 is provided with a second slideway 7 , and the ball plunger 3 and the tensioning block 5 are slidably connected to the second slideway 7 .

[0046] The mechanical return spring 4 is arranged in the second slide 7, and the second slide 7 includes a limiting wall 7-1, and the two ends of the limiting wall 7-1 are connected to the first side wall and the second side wall. The diameter of the first side wall is larger than that of the second side wall. One end of the mechanical return spring 4 is connected to the limiting wall 7-1, and the other end is connected to the spring limiting part 5-3 of the tensioning block 5.

[0047] The working method of the above-mentioned reverse clamping and positioning device for tubular parts comprises the following steps:

[0048] Drive the linear cylinder 6 to inflate, drive the output shaft 6-2 of the linear cylinder 6 to extend, and the guide rod 2 moves to the right (such as Figures 1 to 3 The guide rod 2 extends in the direction shown, and the guide rod 2 pushes the ball plunger 3 in the three clamping and positioning assemblies outward at the same time. The ball plunger 3 is connected with the tensioning block 5, and the tensioning block 5 in the three clamping and positioning assemblies will be stretched open. At this time, the mechanical reset spring 4 is in a compressed state, and the clamping and positioning part 5-1 of the tensioning block 5 in the three clamping and positioning assemblies abuts against the inner wall of the tubular part to achieve reverse tightening and positioning, such as Figure 3 , 4 As shown. The linear cylinder 6 is driven to exhaust, the output shaft 6-2 of the linear cylinder 6 is driven to retract, and the guide rod 2 moves to the left (as shown Figure 3 to Figure 1 After the guide rod 2 loses its push, the compressed mechanical reset spring 4 is reset, pushing the tension block 5 and the ball plunger 3 in the three sets of clamping and positioning components to be retracted inward at the same time. Figure 1 , 2 shown.

[0049] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A reverse clamping and positioning device for tubular parts, characterized in that: The reverse clamping and positioning device comprises a guide sleeve (1), a guide rod (2), and a clamping and positioning assembly; The guide sleeve (1) is connected to the guide rod (2); The clamping and positioning assembly abuts against the guide rod (2); The guide sleeve (1) is connected to the clamping and positioning assembly; The clamping and positioning assembly comprises a ball plunger (3), a mechanical return spring (4), and a tensioning block (5); The ball plunger (3) is connected to the tensioning block (5); The mechanical return spring (4) is sleeved on the outside of the tensioning block (5).

2. A reverse clamping and positioning device for tubular parts according to claim 1, characterized in that: The reverse clamping and positioning device also includes a driving member; The driving member is connected to the guide rod (2); the driving member is used to drive the guide rod (2) to move.

3. A reverse clamping and positioning device for tubular parts according to claim 2, characterized in that: The driving member is a driving linear cylinder (6).

4. A reverse clamping and positioning device for tubular parts according to claim 1, characterized in that: The ball plunger (3) is provided with an external thread; The tension block (5) is provided with an internal thread matching the external thread provided on the ball plunger (3); The ball plunger (3) is connected to the tension block (5) via threads.

5. A reverse clamping and positioning device for tubular parts according to claim 1, characterized in that: The guide sleeve (1) is sleeved on the outside of the guide rod (2); The guide sleeve (1) is sleeved on the outside of the clamping and positioning component.

6. A reverse clamping and positioning device for tubular parts according to claim 5, characterized in that: The guide sleeve (1) can be slidably sleeved on the outside of the guide rod (2); The guide sleeve (1) can be slidably sleeved on the outside of the clamping and positioning component.

7. A reverse clamping and positioning device for tubular parts according to claim 1, characterized in that: The tension block (5) comprises a clamping positioning portion (5-1), a spring sleeve portion (5-2), and a spring limiting portion (5-3) which are connected in sequence; The clamping and positioning portion (5-1) is used to abut against the inner wall of the tubular part; The mechanical return spring (4) is sleeved on the outside of the spring sleeve connection portion (5-2); The spring limiting portion (5-3) is connected to the ball plunger (3).

8. A reverse clamping and positioning device for tubular parts according to claim 7, characterized in that: The clamping and positioning portion (5-1) is an arc-shaped plate.

9. A reverse clamping and positioning device for tubular parts according to claim 1, characterized in that: The guide rod (2) is a tapered guide rod (2).

10. A reverse clamping and positioning device for tubular parts according to claim 1, characterized in that: Arrange multiple groups of clamping and positioning components; A plurality of groups of clamping and positioning components are evenly arranged along the circumference of the guide sleeve (1).

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