CN211490263U - Expansion pin mechanism - Google Patents
Expansion pin mechanism Download PDFInfo
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- CN211490263U CN211490263U CN201922407734.2U CN201922407734U CN211490263U CN 211490263 U CN211490263 U CN 211490263U CN 201922407734 U CN201922407734 U CN 201922407734U CN 211490263 U CN211490263 U CN 211490263U
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- cylinder
- positioning
- body support
- pin mechanism
- pin
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Abstract
The utility model discloses an expansion pin mechanism, including the body support, be provided with four locating pieces, a cylinder, a shield and a axostylus axostyle on the body support, the cylinder is installed in the inside bottom of body support, and the shield sets up in the upper end surface of body support, and even axostylus axostyle swing joint is inside the body support, and even axostylus axostyle is located between shield and the cylinder, the utility model discloses wholly be a slotted locating pin mechanism, total 4 spouts stretch out the withdrawal through 4 locating pieces of cylinder control, play the positioning effect that the locating pin is the same. When the cylinder retracts, the positioning block retracts, namely the positioning pin is in a small-diameter state, the part needing to be positioned is placed in place at the moment, then the cylinder extends out, the positioning block extends out, namely the positioning pin is in a large-diameter state, the part is fixed, the problem that the positioning pin is stuck to influence production in the prior art is solved, and the failure rate of equipment is reduced.
Description
Technical Field
The utility model relates to an expansion pin specifically is an expansion pin mechanism.
Background
The expansion pin mechanism is a novel technology of a positioning pin with a variable diameter, and is mainly suitable for positioning thin sleeve parts with slightly deformed welding diameters after welding.
The existing technology is used for positioning a positioning pin with a fixed diameter, the positioning pin is held back after welding deformation of parts, the positioning pin is difficult to take out, a cylinder with an ultra-large cylinder diameter is often required to withdraw the pin, and the positioning pin mechanism is large, occupies a small space, has poor effect and is easy to block stagnation. Accordingly, one skilled in the art has provided an expansion pin mechanism to solve the problems set forth in the background above.
Disclosure of Invention
An object of the utility model is to provide an expansion pin mechanism to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an expansion pin mechanism, includes the body support, be provided with four locating pieces, a cylinder, a shield and a connecting rod pole on the body support.
As a further aspect of the present invention: the cylinder is installed in the inside bottom of body support.
As a further aspect of the present invention: the dust cover is arranged on the upper end surface of the body support.
As a further aspect of the present invention: the connecting shaft rod is movably connected inside the body support and is positioned between the dust cover and the cylinder.
As a further aspect of the present invention: and the positioning blocks are positioned on the periphery of the upper end of the connecting shaft rod and are connected to the periphery of the upper end of the body support in a sliding manner.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a change former fixed diameter locating pin into pneumatic variable diameter locating pin mechanism, former needs big cylinder diameter cylinder moves back the round pin, and it is littleer now because of locating pin accessible mechanism, can need not move back the round pin, so need not move back the cylinder of round pin, the cylinder that only needs general cylinder diameter is used for the locating pin reducing.
2. The utility model discloses wholly be a slotted locating pin mechanism, total 4 spouts stretch out the withdrawal through 4 locating pieces of cylinder control, play the same location effect of locating pin. When the cylinder retracts, the positioning block retracts, namely the positioning pin is in a small-diameter state, the part needing to be positioned is placed in place at the moment, then the cylinder extends out, the positioning block extends out, namely the positioning pin is in a large-diameter state, the part is fixed, the problem that the positioning pin is stuck to influence production in the prior art is solved, and the failure rate of equipment is reduced.
Drawings
Fig. 1 is a schematic view of an expansion pin mechanism.
Fig. 2 is a schematic structural view of an expansion pin mechanism in a front sectional view a-a.
Fig. 3 is a side cross-sectional structural schematic view of an expansion pin mechanism.
FIG. 4 is a schematic diagram of an expansion pin mechanism with a positioning feature.
Fig. 5 is a schematic structural view of an expansion pin mechanism in a state that a positioning block is extended.
Fig. 6 is a schematic structural view of a retracted state of a positioning block in an expansion pin mechanism.
In the figure: 1. a body support; 2. positioning blocks; 3. a cylinder; 4. a dust cover; 5. a link shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 6, in an embodiment of the present invention, an expansion pin mechanism connects compressed air to an apparatus, operates the apparatus, retracts a cylinder 3 to drive a connecting rod shaft 5 to retract, and the connecting rod shaft 5 has 4 inclined sliding grooves to drive a positioning block 2 to retract, and at this time, a sleeve part to be positioned can be loaded or unloaded, as shown in fig. 4 and 6; the cylinder 3 extends out to drive the connecting rod shaft 5 and the positioning block 2 to extend out, and the positioning part is expanded tightly as shown in fig. 4 and 5.
The utility model discloses a theory of operation is:
the whole mechanism is a chute type positioning pin mechanism, has 4 chutes in total, and controls 4 positioning blocks 2 to extend and retract through the cylinder 3, thereby achieving the same positioning effect as a positioning pin. When the cylinder 3 retracts, the positioning block 2 retracts, namely the positioning pin is in a small-diameter state, the part to be positioned is placed in place at the moment, then the cylinder 3 extends out, the positioning block 2 extends out, namely the positioning pin is in a large-diameter state, and the part is fixed.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The expansion pin mechanism comprises a body support (1) and is characterized in that the body support (1) is provided with four positioning blocks (2), a cylinder (3), a dust cover (4) and a connecting shaft rod (5).
2. An expansion pin mechanism according to claim 1, characterized in that the cylinder (3) is mounted at the inner bottom end of the body bracket (1).
3. An expansion pin mechanism according to claim 1, characterized in that the dust cover (4) is provided to the upper end surface of the body bracket (1).
4. Expansion pin mechanism according to claim 1, wherein the connecting rod (5) is movably connected inside the body bracket (1) and the connecting rod (5) is located between the dust cap (4) and the cylinder (3).
5. An expansion pin mechanism according to claim 1, wherein four of said positioning blocks (2) are located on the upper peripheral side of the connecting shaft rod (5), and the positioning blocks (2) are slidably connected to the upper peripheral side of the body frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922407734.2U CN211490263U (en) | 2019-12-28 | 2019-12-28 | Expansion pin mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922407734.2U CN211490263U (en) | 2019-12-28 | 2019-12-28 | Expansion pin mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211490263U true CN211490263U (en) | 2020-09-15 |
Family
ID=72420880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922407734.2U Active CN211490263U (en) | 2019-12-28 | 2019-12-28 | Expansion pin mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211490263U (en) |
-
2019
- 2019-12-28 CN CN201922407734.2U patent/CN211490263U/en active Active
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