CN216179352U - Hand-held grinding engraving machine's eedle quick replacement structure - Google Patents
Hand-held grinding engraving machine's eedle quick replacement structure Download PDFInfo
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- CN216179352U CN216179352U CN202122573652.2U CN202122573652U CN216179352U CN 216179352 U CN216179352 U CN 216179352U CN 202122573652 U CN202122573652 U CN 202122573652U CN 216179352 U CN216179352 U CN 216179352U
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Abstract
The utility model relates to a quick-replacement structure for a machine needle of a handheld grinding engraving machine, which improves the structure of a front shell cover, and realizes quick replacement of the machine needle by utilizing the matching and connecting relationship of the specific structures of the front shell cover, a shell, a multi-petal spring and a main shaft body; when the sewing needle needs to be replaced, only one wrench is needed to be in limit connection with the first limit part through the limit groove; connecting a limiting tool with a second limiting part at the front end of the multi-petal spring, and rotating the limiting tool to enable the multi-petal spring to rotate so as to enable the multi-petal spring to lose expansion fit with the sewing needle; and (4) replacing the sewing needle, and reversely rotating the multi-petal spring through the limiting tool to enable the sewing needle to be in expansion fit with the multi-petal spring, so that the sewing needle replacement can be completed.
Description
Technical Field
The utility model relates to the technical field of electric tools, in particular to a quick-changing structure for a machine needle of a handheld grinding engraving machine.
Background
The utility model with the granted publication No. CN211073053U discloses a hand-held polishing and carving machine with dustproof and drainage functions, wherein a three-petal spring (chuck) (refer to the appearance patent with the application No. CN 201930178130.8) is used for connecting a needle, and the three-petal spring is connected with the front end of a main shaft body through screw threads, because in the utility model patent product, the front end of the main shaft body is sealed inside by a stainless steel cap, therefore, in the utility model patent product, a limit through hole is needed to be arranged at the side part of a shell, and a corresponding through hole is needed to be arranged on the shell, when the needle needs to be replaced, the through hole needs to be inserted through a plug for limiting the main shaft, and then the three-petal spring is rotated by a spanner, thereby realizing the disassembly and installation of the needle, although in the utility model patent, the through hole is blocked by a dustproof plug to prevent dust from entering, but the dustproof plug needs to be disassembled and assembled every time when the needle needs to be replaced, the first time is complex to operate, and the second time is repeated to dismantle and install the dustproof plug, so that the dustproof plug is loosened or falls to be lost, and therefore dust can enter a gap between the main shaft and the shell through the through hole in the working process, and the stability of the main shaft is affected.
Therefore, how to facilitate the replacement of the machine needle, and meanwhile, to avoid dust from entering the gap between the main shaft and the shell, and to improve the stability of the main shaft becomes a technical problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: how to facilitate the change of the lathe needle, avoid the dust to enter the interval between body and the main axis at the same time, improve the stationarity of the main axis.
In order to solve the technical problems, the utility model adopts the technical scheme that:
a hand-held car needle quick replacement structure of carving machine of polishing includes:
the main shaft comprises a main shaft body, wherein the front end of the main shaft body is provided with a first limiting part for connecting a wrench, and the front end of the main shaft body is provided with an accommodating cavity;
the multi-petal spring is coaxially screwed in the accommodating cavity at the front end of the main shaft body, the multi-petal spring is used for locking and connecting a sewing needle, and a second limiting part is arranged on the side part of the front end of the multi-petal spring;
the shell is connected to the outside of the main shaft body through a bearing;
the front housing is detachably connected to the front end of the shell, so that the first limiting portion is located inside the front housing, a limiting groove is formed in the side portion of the front housing, a through hole is formed in the middle of the limiting groove, the first limiting portion of the front end of the spindle body is located at the through hole, and the wrench can be connected with the first limiting portion through the limiting groove.
Furthermore, in the hand-held quick-change structure of the grinding engraving machine, the bottom of the limiting groove is a plane, the first limiting part is a plane, and the first limiting part protrudes out of the limiting groove or is parallel and level with the bottom of the limiting groove.
Furthermore, in the structure for quickly replacing the sewing needle of the hand-held grinding engraving machine, the multi-petal spring is specifically a three-petal spring.
Furthermore, in the hand-held grinding engraving machine's car needle quick replacement structure, preceding housing spiro union is in the casing front end.
Furthermore, in the hand-held quick-change structure of the grinding engraving machine, the number of the limiting grooves is 2, and the limiting grooves are symmetrically distributed on two sides of the front housing.
Furthermore, in the hand-held quick-change structure of the grinding engraving machine, the number of the first limiting parts is 4, and the first limiting parts are circumferentially distributed on the side part of the front end of the main shaft body in an array manner.
Furthermore, in the hand-held quick-change structure of the needle of the grinding engraving machine, the second limiting part is a limiting structure used for limiting and matching with a wrench.
Furthermore, in the hand-held grinding engraving machine's car needle quick replacement structure, the through-hole at spacing groove middle part is the rectangle through-hole.
The utility model has the beneficial effects that: in the quick-change structure of the machine needle of the handheld grinding engraving machine, the structure of the front shell cover is improved, and the quick change of the machine needle is realized by utilizing the matching and connecting relationship of the specific structures of the front shell cover, the shell, the multi-petal spring and the main shaft body; specifically, the front housing is detachably connected to the front end of the shell, so that the first limiting part is located inside the front housing, a limiting groove is formed in the side part of the front housing, a through hole is formed in the middle of the limiting groove, the first limiting part at the front end of the main shaft body is located at the through hole, a wrench can be connected with the first limiting part through the limiting groove, and when a needle needs to be replaced, only one wrench is in limiting connection with the first limiting part through the limiting groove; connecting a limiting tool with a second limiting part at the front end of the multi-petal spring, and rotating the limiting tool to enable the multi-petal spring to rotate so as to enable the multi-petal spring to lose expansion fit with the sewing needle; change the car needle, through spacing instrument reverse rotation orange-peel spring, make car needle and orange-peel spring expand tight cooperation, can accomplish the car needle and change, compare prior art, no longer need set up spacing hole at main shaft body middle part, and set up the through-hole that corresponds with spacing hole at the casing lateral part, no longer need pass spacing hole through the plug and carry out spacingly, no longer need extra sealing plug, thereby the operation of changing the car needle is more convenient, can avoid making and get into the dust between main shaft body and the casing because the sealing plug loses, thereby guarantee that the main shaft can steadily rotate, and then improve the glyptic precision of polishing.
Drawings
FIG. 1 is an exploded view of a hand held sanding engraver, in accordance with embodiments of the present invention;
FIG. 2 is a schematic structural diagram of a hand-held grinding engraving machine according to an embodiment of the present invention;
FIG. 3 is a sectional view taken along line A of FIG. 2;
FIG. 4 is a schematic structural view of a front housing of a hand-held sanding engraver, in accordance with embodiments of the present invention;
FIG. 5 is a schematic structural diagram of a multi-petal spring of a hand-held sanding engraving machine according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a spindle body of a hand-held grinding engraving machine according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a housing of a hand-held grinding engraving machine in accordance with an embodiment of the present invention;
description of reference numerals:
1. a main shaft body; 11. a first limiting part; 12. an accommodating chamber; 2. a multi-petal spring; 21. a second limiting part; 3. needle turning; 4. a housing; 5. a bearing; 6. a front cover shell; 61. a limiting groove; 62. A through hole; 7. a motor; 8. a transmission member.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Example 1
Referring to fig. 1 to 7, a fast replacing structure for a needle 3 of a hand-held grinding engraving machine includes:
the main shaft comprises a main shaft body 1, wherein a first limiting part 11 used for connecting a wrench is arranged at the front end of the main shaft body 1, and an accommodating cavity 12 is arranged at the front end of the main shaft body 1;
the multi-petal spring 2 is coaxially screwed in the accommodating cavity 12 at the front end of the main shaft body 1, the multi-petal spring is used for locking and connecting the sewing needle 3, and a second limiting part 21 is arranged on the side part of the front end of the multi-petal spring 2; in one embodiment, the second position-limiting part 21 is a position-limiting structure for limiting and matching with a wrench.
The above-mentioned multi-petal spring structure can refer to the design patent with application number CN201930178130.8, named as a collet (carved three-petal spring), in which the number of petals of the collet is three petals, and the multi-petal structure with more than three petals is also applicable, and preferably, the above-mentioned multi-petal spring 2 can adopt the three-petal spring structure of the above-mentioned design patent product.
A housing 4, wherein the housing 4 is connected to the outside of the main shaft body 1 through a bearing 5;
preceding housing 6, preceding housing 6 detachably connects in 4 front ends of casing, and as an embodiment, preceding housing 6 can be through threaded connection in 4 front ends of casing, makes first spacing portion 11 be located preceding housing 6 inside, 6 lateral parts of preceding housing are equipped with spacing groove 61, spacing groove 61 middle part is equipped with through-hole 62, makes the first spacing portion 11 of main shaft body front end be located through-hole 62 department, makes the spanner can be connected with first spacing portion 11 through spacing groove 61, the bottom of spacing groove 61 is a plane, first spacing portion 11 protrusion in spacing groove 61 or with spacing groove 61 bottom parallel and level.
As an embodiment, the number of the limiting grooves 61 is 2, and 2 limiting grooves 61 are symmetrically distributed on two sides of the front housing 6.
In one embodiment, the second position-limiting part 21 is a position-limiting structure for limiting and matching with a wrench.
The method for replacing the quick replacement structure of the machine needle 3 of the handheld grinding engraving machine comprises the following steps:
a wrench is connected with the first limiting part 11 in a limiting way through a limiting groove 61;
connecting a limiting tool with a second limiting part 21 at the front end of the multi-petal spring 2, and rotating the limiting tool to enable the multi-petal spring 2 to rotate so as to enable the multi-petal spring to lose expansion fit with the sewing needle 3;
and (3) replacing the sewing needle, reversely rotating the multi-petal spring 2 through a limiting tool, and enabling the sewing needle 3 to be tightly matched with the multi-petal spring 2 in an expanding manner to finish the replacement of the sewing needle 3. The limiting tool is a wrench.
Example 2
Referring to fig. 4, as a preferred scheme, the through hole 62 in the middle of the limiting groove 61 is rectangular, the first limiting portion 11 is flush with the bottom of the limiting groove 61, and the structure can more conveniently limit the first limiting portion 11 by a wrench, so that the needle 3 can be more conveniently replaced.
Example 3
Referring to fig. 1 to 3, a handheld engraver of polishing, including the 3 quick replacement structures of the hand-held engraver of polishing in embodiment 1 or 2, motor 7 is connected with the transmission of main shaft body 1 through driving medium 8, make the main shaft at 4 internal rotations of casing, thereby drive the rotation of many lamella springs 2, and then drive the car needle 3 rotation of its connection, through spring coupling between driving medium 8 and the main shaft body 1, and its axial sliding fit can be followed to bearing 5 outer lane and the 4 inner walls of casing that main shaft body 1 is connected, thereby make car needle 3 can carry out the axial at the rotation in-process and stretch out and draw back.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (7)
1. Hand car needle quick replacement structure of engraver of polishing, its characterized in that includes:
the main shaft comprises a main shaft body, wherein the front end of the main shaft body is provided with a first limiting part for connecting a wrench, and the front end of the main shaft body is provided with an accommodating cavity;
the multi-petal spring is coaxially screwed in the accommodating cavity at the front end of the main shaft body, the multi-petal spring is used for locking and connecting a sewing needle, and a second limiting part is arranged on the side part of the front end of the multi-petal spring;
the shell is connected to the outside of the main shaft body through a bearing;
the front housing is detachably connected to the front end of the shell, so that the first limiting portion is located inside the front housing, a limiting groove is formed in the side portion of the front housing, a through hole is formed in the middle of the limiting groove, the first limiting portion of the front end of the spindle body is located at the through hole, and the wrench can be connected with the first limiting portion through the limiting groove.
2. The hand-held grinding and carving machine needle quick-changing structure as claimed in claim 1, wherein the bottom of the limiting groove is a flat surface, the first limiting portion is a flat surface, and the first limiting portion protrudes out of the limiting groove or is flush with the bottom of the limiting groove.
3. The hand-held sharpening sculpting machine needle quick-change structure as recited in claim 1, wherein said multi-petal spring is a three-petal spring.
4. The hand-held sharpening sculpting machine needle quick-change structure as set forth in claim 1, wherein said front housing is screwed to the front end of the housing.
5. The hand-held grinding and carving machine needle quick-changing structure as claimed in claim 1, wherein the number of the limiting grooves is 2, and 2 limiting grooves are symmetrically distributed on two sides of the front housing.
6. The hand-held grinding and carving machine needle quick-changing structure as claimed in claim 1, wherein the number of the first limiting portions is 4, and the 4 first limiting portions are circumferentially distributed on the side portion of the front end of the main shaft body.
7. The hand-held grinding and carving machine needle quick-changing structure as claimed in claim 1, wherein the second limiting portion is a limiting structure for limiting engagement with a wrench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122573652.2U CN216179352U (en) | 2021-10-25 | 2021-10-25 | Hand-held grinding engraving machine's eedle quick replacement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122573652.2U CN216179352U (en) | 2021-10-25 | 2021-10-25 | Hand-held grinding engraving machine's eedle quick replacement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216179352U true CN216179352U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122573652.2U Active CN216179352U (en) | 2021-10-25 | 2021-10-25 | Hand-held grinding engraving machine's eedle quick replacement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216179352U (en) |
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2021
- 2021-10-25 CN CN202122573652.2U patent/CN216179352U/en active Active
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