CN212794512U - Needle head assembly capable of realizing automatic feeding, discharging, grinding and positioning - Google Patents

Abstract

The utility model discloses a realize automatic feeding and discharging and grind syringe needle subassembly of location, it includes: a clamp (1) having a first air passage (18) therein; the thimble (2) is internally provided with a second air passage (23); the connecting cover (3) is fixed at the rear end of the clamp (1) and is used for connecting the thimble (2) with the clamp (1) and communicating the first air passage with the second air passage; and the positioning piece (4) is arranged in the motion path of the connecting cover (3) and used for containing and positioning the connecting cover (3) in a feeding or blanking state. The needle head assembly not only has the function of positioning the lens at the grinding head in grinding, but also can realize the automatic feeding and discharging functions of the lens.

Description

Needle head assembly capable of realizing automatic feeding, discharging, grinding and positioning

Technical Field

The utility model relates to a lens grinds the processing field, specifically is a syringe needle subassembly that realizes unloading and grinding location in automation.

Background

In the field of grinding and processing of glass lenses, the grinding and processing device is divided into an upper swing machine and a lower swing machine which are respectively used for grinding a concave mirror and a convex mirror. The existing upper swing machine does not have the function of automatic feeding and discharging of the lens, the lens is manually installed on a clamp, then the clamp is installed on an ejector pin, the grinding is finished, the clamp is manually taken down, and the lens is taken out from the clamp.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a realize unloading and grind syringe needle subassembly of location in automation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a realize unloading and grind syringe needle subassembly of location on automation which includes:

a clamp with a first air channel inside;

the thimble is internally provided with a second air passage;

the connecting cover is fixed at the rear end of the clamp and used for connecting the thimble and the clamp and communicating the first air passage and the second air passage; and

and the positioning piece is arranged in the motion path of the connecting cover and used for accommodating and positioning the connecting cover in a feeding or blanking state.

Preferably, the thimble and the connecting cover are further provided with a sealing and positioning structure, so that the connecting cover is aligned with the positioning piece when the loading or unloading state is started, and the joint of the thimble and the connecting cover is sealed.

Preferably, the seal positioning structure comprises:

the inner conical surface is arranged at the rear end of the inside of the connecting cover; and

and the outer conical surface is arranged on the thimble and corresponds to the inner conical surface.

Preferably, the first air passage includes:

the first air hole is arranged in the center of the cavity bottom of the lens accommodating cavity;

a plurality of second air holes arranged on the periphery of the needle groove; and

and the third air holes are arranged at the bottom of the needle groove and are used for communicating the first air holes and the second air holes.

Preferably, the jig comprises:

a first body made of a first material having the first air passage; and

and the rigid part is fixedly arranged at the center of the back of the first body and is made of a second material and provided with a needle groove.

Preferably, the thimble includes:

a second body made of a third material having the second air passage; and

and the needle point is fixedly arranged at the front end of the second body and is made of a fourth material.

In some aspects, the ejector pin is integrally formed from a fourth material.

Preferably, the second air passage has a plurality of outlets, and the outlets are uniformly distributed on a circumference with the central axis of the thimble as a circle center.

Compared with the prior art, the utility model discloses following beneficial effect has at least:

the needle head assembly has the function of positioning the lens at the grinding head in grinding, and can also realize the automatic feeding and discharging functions of the lens.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken in another direction at 90 degrees to the A-A direction

FIG. 4 is a view showing a state in which the jig is floating;

FIG. 5 is an exploded view;

reference numerals:

1. a clamp;

11. a first body; 12. a rigid member; 13. a second air hole; 14. a third air hole; 15. a first air hole; 16. a lens housing cavity; 17. a needle groove; 18. a first air passage;

2. a thimble;

21. a needle tip; 22. a second body; 23. a second air passage; 24. an outlet;

3. a connecting cover;

4. a positioning member;

5. a sealing and positioning structure;

6. an air cavity.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to fig. 1 to 5, the needle assembly includes: the device comprises a clamp 1 with a first air passage 18 inside, a thimble 2 with a second air passage 23 inside, a connecting cover 3 fixed at the rear end of the clamp 1 and used for connecting the thimble 2 with the clamp 1 and communicating the first air passage 18 with the second air passage 23, and a positioning piece 4 arranged in the moving path of the connecting cover 3 and used for accommodating and positioning the connecting cover 3 in a loading or unloading state (see fig. 2 and 3).

In this embodiment, the jig 1 includes: a first body 11 with said first air duct 18, and a rigid element 12 with a needle slot 17, the rigid element 12 being over-fitted with the central hole of the back of the first body 11, fixedly mounted to said first body 11. The first body 11 is made of a common steel material or other relatively inexpensive first material, and the rigid member 12 is made of a tungsten steel, ceramic or other second material having good wear resistance. This can reduce costs.

In this embodiment, the thimble 2 includes: a second body 22 with the second air channel 23, and a needle point 21, wherein the needle point 21 is excessively matched with the central hole at the front end of the first body 11 and fixedly arranged at the front end of the second body 22. The second body 22 is made of common steel or other cheaper third material, and the needle tip 21 is made of tungsten steel, ceramic or other fourth material with good wear resistance. This further reduces costs and allows replacement of only the needle tip 21 when the needle tip 21 becomes worn.

As another embodiment, the thimble 2 is integrally formed by tungsten steel, ceramic or other fourth material with good wear resistance.

Referring to fig. 3, in the present embodiment, the first air passage 18 includes: a first air hole 15 arranged at the center of the bottom of the lens accommodating cavity 16; a plurality of second air holes 13 provided on the outer periphery of the needle groove 17; and a plurality of third air holes 14 which are arranged at the bottom of the needle groove 17 and are used for communicating the first air holes 15 and the second air holes 13. It can be seen that the outlet of the first air channel 18 (i.e. the first air hole 15) is located at the center of the bottom of the lens accommodating cavity 16, and the lens with a small diameter or a lens with a large diameter can be adsorbed as long as the lens accommodating cavity 16 can be placed therein, and the inlet of the first air channel 18 (i.e. the second air hole 13) is located in the first body 11 with a small hardness, so that the characteristic of easy opening is provided.

Referring to fig. 3, in the present embodiment, the second air channel 23 has two outlets 24, and the two outlets 24 are uniformly distributed on a circumference centered on a central axis of the thimble 2. Therefore, the gas can uniformly enter the gas cavity 6, and the gas cavity has the characteristics of good balance and high reliability.

Referring to fig. 2, a sealing and positioning structure 5 is further provided between the thimble 2 and the connecting cover 3, and the sealing and positioning structure 5 includes: an inner conical surface provided at the inner rear end of the connecting cover 3; and the outer conical surface is arranged on the thimble 2 and corresponds to the inner conical surface. The inner conical surface and the outer conical surface are matched, so that the center shaft of the connecting cover 3, the center shaft of the clamp 1 and the center shaft of the thimble 2 are kept coincident, and the connecting cover 3 can accurately enter the positioning part 4 when the thimble 2 drives the connecting cover 3 and the clamp 1 to move upwards. Meanwhile, the inner conical surface and the outer conical surface are matched to seal the joint part of the thimble 2 and the connecting cover 3, so that the gas leakage of the first gas passage 18 and the second gas passage 23 can be avoided. It can be seen that, by the above-mentioned sealing and positioning structure 5, when the loading or unloading state (see fig. 2 and 3) is entered, the connecting cover 3 is aligned with the positioning element 4, and the joint of the thimble 2 and the connecting cover 3 is sealed, so as to avoid air leakage.

As another embodiment, the sealing and positioning structure 5 may also be a hemispherical structure, specifically, a concave spherical surface is designed at the rear end of the inside of the connecting cover 3, and a convex spherical surface is correspondingly designed on the thimble 2.

In the state shown in fig. 2 and 3, the connecting cover 3 cooperates with the positioning element 4 to hold the clamp 1 in place for loading and unloading. In this state, negative air pressure is introduced into the air passage in the thimble 2, so that suction force can be generated in the lens accommodating cavity 16 of the fixture 1, and the lens is sucked and held in the lens accommodating cavity 16 of the fixture 1; through letting in positive atmospheric pressure to the air flue in thimble 2, then can produce thrust to the lens in the lens holding chamber 16 on anchor clamps 1, push away anchor clamps 1 with the lens to can realize the automatic feeding and the unloading of lens.

During the abrading process, the needle assembly is in the condition of fig. 4. At this time, the connecting cover 3 and the positioning member 4 are in a disengaged state, and the needle point 21 of the thimble 2 is pushed into the needle groove 17 at the back of the jig 1, thereby positioning the jig 1 and the lens on the grinding head. In this state, the fixture 1 is in a floating state at the front end of the thimble 2, so that the fixture 1 can have a certain swing amplitude with the thimble 2 while the fixture 1 rotates relative to the grinding head during the grinding process.

It can be seen from the above that, the needle assembly connects the clamp 1 and the thimble 2 through the connecting cover 3, and is provided with the positioning piece 4 matched with the connecting cover 3, so that the clamp 2 can be kept in a fixed state and a floating state, and the thimble 2 and the clamp 1 are internally provided with the air passage communicated with the lens accommodating cavity 16, thereby further realizing the automatic loading and unloading of the lens on the basis of the functions of the existing thimble and clamp.

The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for assisting the skilled person in understanding the content of the present invention, and can not be understood as the limitation of the protection scope of the present invention. Various decorations, equivalent changes and the like which are performed on the scheme by the technical personnel in the field under the conception of the invention are all included in the protection scope of the invention.

Claims (8)

1. The utility model provides a realize unloading and grind syringe needle subassembly of location in automation which characterized in that includes:

a clamp (1) having a first air passage (18) therein;

the thimble (2) is internally provided with a second air passage (23);

the connecting cover (3) is fixed at the rear end of the clamp (1) and is used for connecting the thimble (2) with the clamp (1) and communicating the first air passage (18) with the second air passage (23); and

and the positioning piece (4) is arranged in the motion path of the connecting cover (3) and used for containing and positioning the connecting cover (3) in a feeding or discharging state.

2. The needle head assembly capable of realizing automatic feeding and discharging and grinding positioning as claimed in claim 1, wherein the thimble (2) and the connecting cover (3) are further provided with a sealing and positioning structure (5) so that the connecting cover (3) is aligned with the positioning piece (4) and a joint of the thimble (2) and the connecting cover (3) is sealed when the needle head assembly enters a feeding or discharging state.

3. The needle assembly for realizing automatic feeding and discharging and grinding positioning as claimed in claim 2, wherein said sealing and positioning structure (5) comprises:

an inner conical surface arranged at the rear end of the interior of the connecting cover (3); and

and the outer conical surface is arranged on the thimble (2) and corresponds to the inner conical surface.

4. Needle assembly for automatic loading and unloading and grinding positioning, according to claim 1, characterized in that said first air duct (18) comprises:

a first air hole (15) arranged at the center of the bottom of the lens accommodating cavity (16);

a plurality of second air holes (13) arranged on the periphery of the needle groove (17); and

and the third air holes (14) are arranged at the bottom of the needle groove (17) and are used for communicating the first air holes (15) with the second air holes (13).

5. Needle assembly for automatic loading and unloading and grinding positioning, according to claim 1, characterized in that said clamp (1) comprises:

a first body (11) made of a first material having said first air duct (18); and

a rigid element (12) made of a second material and provided with a needle groove (17) and fixedly arranged at the center of the back of the first body (11).

6. The needle assembly for realizing automatic feeding and discharging and grinding positioning as claimed in claim 1, wherein said thimble (2) comprises:

a second body (22) made of a third material having said second air duct (23); and

a needle point (21) which is fixedly arranged at the front end of the second body (22) and is made of a fourth material.

7. The needle assembly for realizing automatic feeding and discharging and grinding positioning as claimed in claim 1, wherein the thimble (2) is integrally formed of a fourth material.

8. The needle assembly for realizing automatic feeding and discharging and grinding positioning as claimed in claim 1, wherein said second air channel (23) has a plurality of outlets (24), said plurality of outlets (24) are uniformly distributed on a circumference with a central axis of said thimble (2) as a center.

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