Locating pin convenient to disassemble and assemble

Abstract

The utility model provides a locating pin convenient to disassemble and assemble, which belongs to the technical field of locating pins and comprises a locating pin seat, a locating pin rod, a nail head, an extension rod and a locating pin sleeve, the locating pin rod is arranged at the lower end of the locating pin seat, the nail head is arranged at the other end of the locating pin rod, the extension rod is arranged at the upper end of the locating pin seat, and the locating pin sleeve is mounted on the extension rod. The positioning pin sleeve is arranged, the positioning pin sleeve installed on the extension rod can serve as a handle and a protective sleeve, under the condition that the positioning pin is installed in a workpiece and the exposed part of the positioning pin is small, and when the extension amount of the positioning pin is not enough, the positioning pin sleeve is installed on the extension rod, the exposed part of the positioning pin is increased, and therefore the positioning pin can be installed conveniently. The locating pin sleeve on the upper portion of the locating pin can increase the stress area, grabbing and tool disassembling are convenient, the advantages which a common locating pin does not have are achieved, the locating pin can be disassembled by manually grabbing a fixing piece, and the locating pin can be conveniently taken out under the condition that the locating pin is firmly installed.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning pins, in particular to a positioning pin which is easy to disassemble and assemble. Background Art

[0002] Locating pins are widely used positioning parts, especially in the processing and manufacturing industry. Locating pins are parts designed to limit the freedom of objects with the workpiece hole as the positioning reference. They are used in some mechanical motion equipment. In the machining process, when the machine body is connected by two or more parts, and each part needs to maintain a precise position during machining and assembly, locating pins should be used for positioning and clamping;

[0003] It is found in actual use that the existing positioning pins have the following shortcomings:

[0004] The existing positioning pin is just a simple cylinder with arcs at both ends. Sometimes, more of the positioning pin is inserted into the pin hole, and less of it is left outside. The surface of the cylindrical positioning pin is relatively smooth, and the linear shape also leads to fewer stress points. In this case, it is difficult to remove the positioning pin.

[0005] In addition, after the positioning pin has been working for a period of time, dust and debris are likely to enter the gap between the movable pin and the side wall during the working process, increasing the friction between the movable pin and the side wall, which in turn causes the movable pin to be unable to reset, thereby affecting the accurate positioning of the workpiece, reducing the accuracy of the workpiece processing, or even directly scrapping it;

[0006] Therefore, the present application provides a positioning pin that is easy to disassemble and assemble to meet the needs. Utility Model Content

[0007] The utility model aims to solve the problems existing in the above-mentioned background technology and proposes a positioning pin which is easy to disassemble and assemble.

[0008] The technical problem to be solved by the utility model is to provide a positioning pin which is easy to disassemble and assemble so as to solve the problem of the existing positioning pin which is easy to disassemble and assemble.

[0009] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0010] A positioning pin which is easy to disassemble and assemble comprises: a positioning pin seat, a positioning pin rod, a nail head, an extension rod and a positioning pin sleeve, wherein the positioning pin rod is arranged at the lower end of the positioning pin seat, the nail head is arranged at the other end of the positioning pin rod, the extension rod is arranged at the upper end of the positioning pin seat, and the positioning pin sleeve is installed on the extension rod.

[0011] Preferably, the widths of the positioning pin rod and the extension rod at both ends of the positioning pin seat narrow in stages.

[0012] Preferably, the positioning pin sleeve is in the shape of a circular cap, and the diameter of the positioning pin sleeve is larger than the diameter of the positioning pin seat.

[0013] Preferably, a placement groove is provided inside the positioning pin sleeve, and a mounting hole is opened in the middle of the positioning pin sleeve.

[0014] Preferably, a thread groove is provided on the surface of the extending rod, a thread surface is provided on the inner surface of the mounting hole in the middle of the positioning pin sleeve, and the positioning pin sleeve and the extending rod are threadedly connected.

[0015] Preferably, the placement groove is circular in shape, and the placement groove fits with the positioning pin seat.

[0016] Preferably, the positioning pin sleeve is provided with exhaust holes at the left and right ends of the outer side of the placement groove, and the interval between the exhaust holes is greater than the diameter of the positioning pin seat.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] 1. The locating pin sleeve installed on the extension rod can serve as a handle and a protective sleeve. When the locating pin is installed in the workpiece and the exposed part of the locating pin is small, and the extension amount of the locating pin is insufficient, the locating pin sleeve is installed on the extension rod to increase the exposed part of the locating pin. The locating pin sleeve on the upper part of the locating pin can increase the force-bearing area, which is convenient for grabbing and tool disassembly. It has advantages that ordinary locating pins do not have. The fixing piece can be manually grabbed to disassemble the locating pin. When the locating pin is firmly installed, it is convenient to take out the locating pin;

[0019] 2. After the locating pin is installed, the locating pin sleeve can be screwed in and moved toward the locating pin seat. The placement groove of the locating pin sleeve can wrap the locating pin seat and cover the connection seam between the locating pin seat and the locating hole, so that processing waste chips cannot enter the gap during the falling process, effectively preventing processing waste chips from being stuck in the gap of the locating pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the specific structure of the positioning pin sleeve of the utility model;

[0023] Figure 3 It is a schematic diagram of the use of the utility model;

[0024] Figure 4 It is a schematic diagram of the split structure of the utility model.

[0025] [reference numerals]

[0026] 1-positioning pin seat; 2-positioning pin rod; 3-nail head; 4-extending rod; 5-positioning pin sleeve; 501-placing groove; 502-installation hole; 503-exhaust hole.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 A positioning pin that is easy to disassemble and assemble is shown in an embodiment of the utility model, comprising: a positioning pin seat 1, a positioning pin rod 2, a nail head 3, an extension rod 4 and a positioning pin sleeve 5. The lower end of the positioning pin seat 1 is provided with a positioning pin rod 2, the other end of the positioning pin rod 2 is provided with a nail head 3, the upper end of the positioning pin seat 1 is provided with an extension rod 4, and the positioning pin sleeve 5 is installed on the extension rod 4.

[0029] In this embodiment, the widths of the positioning pin rod 2 and the extension rod 4 at both ends of the positioning pin seat 1 are gradually narrowed, so that the positioning pin seat 1 can be limited, the positioning pin rod 2 can extend into the positioning hole, and the extension rod 4 can be exposed at the outer end.

[0030] In this embodiment, the locating pin sleeve 5 is in the shape of a circular cap, and the diameter of the locating pin sleeve 5 is larger than the diameter of the locating pin seat 1. The locating pin sleeve 5 can act as a handle and a protective sleeve. When the locating pin is installed in the workpiece and the exposed part of the locating pin is small, when the locating pin is not extended enough, the locating pin sleeve 5 is installed on the extension rod 4, which increases the exposed part of the locating pin. The locating pin sleeve 5 on the upper part of the locating pin can increase the force-bearing area, which is convenient for grasping and tool disassembly. It has advantages that ordinary locating pins do not have. The fixing part can be manually grasped to disassemble the locating pin. When the locating pin is firmly installed, it is convenient to remove the locating pin.

[0031] In this embodiment, a placement groove 501 is provided inside the positioning pin sleeve 5 , and a mounting hole 502 is opened in the middle of the positioning pin sleeve 5 .

[0032] In this embodiment, a threaded groove is provided on the surface of the extending rod 4, and a threaded surface is provided on the inner surface of the mounting hole 502 in the middle of the positioning pin sleeve 5, and the positioning pin sleeve 5 is threadedly connected to the extending rod 4. The positioning pin sleeve 5 can be screwed in and out on the extending rod 4, so as to adjust the position of the positioning pin sleeve 5 on the extending rod 4. After the positioning pin is installed, the positioning pin sleeve 5 can be screwed in, and the positioning pin sleeve 5 moves toward the positioning pin seat 1. The placement groove 501 of the positioning pin sleeve 5 can wrap the positioning pin seat 1, covering the connecting seam between the positioning pin seat 1 and the positioning hole, so that processing waste chips cannot enter the gap during the falling process, effectively preventing processing waste chips from being stuck in the gap of the positioning pin.

[0033] In this embodiment, the placement groove 501 is circular in shape, and the placement groove 501 is matched with the positioning pin seat 1 , and the placement groove 501 can be wrapped around the outer end of the positioning pin seat 1 .

[0034] In this embodiment, exhaust holes 503 are opened at the left and right ends of the outer side of the positioning pin sleeve 5 where the placement groove 501 is located, and the spacing distance between the exhaust holes 503 is greater than the diameter of the positioning pin seat 1, so that the exhaust holes 503 are located at the outer ends of the positioning pin seat 1, and the air in the positioning pin seat 1 and the positioning hole is discharged through the exhaust holes 503, and no closed air chamber is formed in the internal space, so it is easier to install and remove the positioning pins.

Claims

1. A positioning pin that is easy to disassemble and assemble, characterized in that: include: A positioning pin seat (1), a positioning pin rod (2), a nail head (3), an extension rod (4) and a positioning pin sleeve (5), wherein the positioning pin seat (1) is provided with a positioning pin rod (2) at the lower end, the positioning pin rod (2) is provided with a nail head (3) at the other end, the positioning pin seat (1) is provided with an extension rod (4) at the upper end, and the extension rod (4) is installed with a positioning pin sleeve (5).

2. The positioning pin that is easy to disassemble and assemble according to claim 1, characterized in that: The widths of the positioning pin rod (2) and the extension rod (4) at both ends of the positioning pin seat (1) are gradually narrowed.

3. The positioning pin that is easy to disassemble and assemble according to claim 1, characterized in that: The positioning pin sleeve (5) is in the shape of a circular cap, and the diameter of the positioning pin sleeve (5) is greater than the diameter of the positioning pin seat (1).

4. The positioning pin that is easy to disassemble and assemble according to claim 1, characterized in that: A placement groove (501) is provided inside the positioning pin sleeve (5), and a mounting hole (502) is provided in the middle of the positioning pin sleeve (5).

5. The positioning pin that is easy to disassemble and assemble according to claim 1 or 4, characterized in that: The surface of the extension rod (4) is provided with a thread groove, the inner surface of the mounting hole (502) in the middle of the positioning pin sleeve (5) is provided with a thread surface, and the positioning pin sleeve (5) and the extension rod (4) are threadedly connected.

6. The positioning pin that is easy to disassemble and assemble according to claim 4, characterized in that: The placement groove (501) is circular in shape, and the placement groove (501) fits with the positioning pin seat (1).

7. The positioning pin that is easy to disassemble and assemble according to claim 1 or 4, characterized in that: The positioning pin sleeve (5) is provided with exhaust holes (503) at the left and right ends of the outer side of the placement groove (501), and the spacing between the exhaust holes (503) is greater than the diameter of the positioning pin seat (1).

Images