CN213315919U - Reducing needle - Google Patents

Abstract

The utility model relates to a reducing needle, including the needle file, the first needle tubing of fixedly connected with on the needle file, dismantled and assembled and sealing connection has the second needle tubing on the first needle tubing, first needle tubing and second needle tubing have different internal diameters and switch on each other in inside. The utility model discloses a set up the needle tubing into the not needle tubing of two internal diameters equidimensions, two needle tubing dismantled and assembled sealing connection just can guarantee to glue under the prerequisite of speed, also ensure can not the running glue in the use according to the very convenient change second needle tubing of user demand, very big improvement the convenience of using.

Description

Reducing needle

Technical Field

The utility model relates to a tool is glued to the point, especially a reducing needle that uses is glued to convenient point.

Background

In industrial production, the processing of gluing to the point of work piece is one of them very important process, the precision of gluing and the form of gluing all have the influence of certain degree to the product, in the in-process is glued to the point in reality, because the difference of gluing product and point position, just need use the point of different internal diameters to glue the needle, and current point is glued the needle and all is the same internal diameter, also be convenient for changing it in the use, simultaneously because the difference of point gluey needle internal diameter, the mobility of glue solution in the point is glued the needle and is just also different, guarantee point that the demand just can not be fine to the point of difference glues in the needle and go out gluey speed, thereby lead to gluing the low of quality.

SUMMERY OF THE UTILITY MODEL

To present not enough, the utility model provides a reducing needle that use is glued to convenient point.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a reducing needle, includes the needle file, fixedly connected with first needle tubing on the needle file, dismantled and assembled and sealing connection has the second needle tubing on the first needle tubing, first needle tubing and second needle tubing have different internal diameters and switch on each other in inside.

Preferably, the first needle tube or the second needle tube is internally fixed and embedded with a connecting piece in a sealing manner, the middle part of the connecting piece is provided with a through hole matched with the outer diameter of the second needle tube or the first needle tube, and the second needle tube or the first needle tube is inserted into the through hole in a matching manner.

Preferably, the first needle tube and the second needle tube are connected by screw threads, and a sealing ring is arranged at the joint.

As preferred, first needle pipe and second needle tubing are connected through a coupling assembling, coupling assembling includes the connector, matches the fixed cover of cover on the connector, be provided with on the connector along the opening seam of radial distribution and connector match and fixed cover establish the tip at first needle tubing or second needle tubing, fixed cover activity cover is established and is cup jointed the reduction opening seam clearance mutually at the tip of second needle tubing or first needle tubing and with the connector.

Preferably, the end of the second needle tube is provided with at least two notches which are symmetrical in the radial direction.

Preferably, the notch is in any one shape of a triangle, a wedge, an arc and a square.

Preferably, the tail part of the second needle tube is connected with the first needle tube, the head part of the second needle tube is bent to form a bent part, and the end surface where the outlet of the head part of the second needle tube is located is parallel to the tail part of the second needle tube.

Preferably, the second needle tube is a soft plastic needle.

The beneficial effects of the utility model reside in that: the utility model discloses a set up the needle tubing into the not needle tubing of two internal diameters equidimensions, two needle tubing detachable sealing connect, just can adjust out gluey speed through the second needle tubing according to the very convenient change second needle tubing of user demand, under the prerequisite of guaranteeing gluey speed, also ensured not to flow in the use and glued, very big improvement the convenience of using.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged schematic view of A of FIG. 1;

FIG. 3 is an enlarged schematic view of B of FIG. 1 according to the present invention;

FIG. 4 is a schematic view of the second needle cannula of the present invention having a bent portion;

part names and serial numbers in the figure: 1-a needle base 2-a first needle tube 3-a second needle tube 30-a notch 31-a bending part 4-a connecting piece 40-a through hole.

Detailed Description

To clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, which are clearly and completely described below. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Furthermore, directional terms as referred to in the present disclosure, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer only to the direction of the attached drawings, and directional terms used are intended to better and more clearly illustrate and understand the present invention rather than to indicate or imply the orientation the present invention must have, and therefore should not be construed as limiting the present invention.

The embodiment of the utility model is shown in figures 1 to 4, a reducing needle, comprising a needle base 1, the needle base 1 is hollow as the conventional needle base, and is also installed on the needle cylinder to guide the glue solution in the needle cylinder into the needle cylinder when in use, a first needle tube 2 is fixedly connected on the needle base 1, a second needle tube 3 is detachably and hermetically connected on the first needle tube 2, the first needle tube 2 and the second needle tube 3 have different inner diameters and are communicated with each other inside, the first needle tube 2 and the second needle tube 3 are both hollow cylindrical structures, the needle base 1 is communicated with the first needle tube 2, the first needle tube 2 is communicated with the second needle tube 3, thus the needle base 1, the first needle tube 2 and the second needle tube 3 are communicated with each other to form a flowing channel of the glue solution, the glue flows out from the second needle tube 3 on a workpiece, and the first needle tube 2 and the second needle tube 1 are fixedly connected, that is to say after needle file 1 is installed on the cylinder, first needle tubing 2 is unable to be changed, but second needle tubing 3 is detachable connections on first needle tubing 2, just can come convenient change second needle tubing 3 according to the user demand of difference, just can adjust out the speed of gluing through second needle tubing 3, just can avoid out gluing too fast. The glue flowing is generated, even the glue solution is accumulated, the problem of low glue dispensing quality is caused, the problem of unsmooth glue discharging caused by the undersize inner diameter of the needle tube can be avoided, the glue flowing is avoided in the use process on the premise of ensuring the glue discharging speed, and the use convenience is greatly improved. At this moment, the inner diameters of the first needle tube 2 and the second needle tube 3 have two different conditions, the first condition is that the inner diameter of the first needle tube 2 is larger than the inner diameter of the second needle tube 3, after the glue solution enters the second needle tube 3 through the first needle tube 2, the circulation channel is narrowed, the outflow speed of the glue solution is slowed down, the glue dispensing device is suitable for the glue dispensing process with the low glue dispensing speed, the second condition is that the inner diameter of the first needle tube 2 is smaller than the inner diameter of the second needle tube 3, the circulation channel of the glue solution is widened by the narrowing, the outflow of the glue solution is accelerated, the glue dispensing process with the quick glue dispensing is suitable for being used, and the sealing of the two needle tubes prevents the glue solution from flowing out from the connection position between the.

Further improvement, as shown in fig. 1 to 4, for the detachable sealing connection between two needle tubes, the first connection mode is that the first needle tube 2 or the second needle tube 3 is internally fixed and hermetically embedded with a connecting piece 4, the middle part of the connecting piece 4 is provided with a through hole 40 matching the outer diameter of the second needle tube 3 or the first needle tube 2, the second needle tube 3 or the first needle tube 2 is inserted into the through hole 40 in a matching manner, and there are two cases, the first case is that the connecting piece 4 is fixedly embedded in the first needle tube 2, the connecting piece 4 is a cylindrical component fixed in the first needle tube 2, and can be made of a hard material with certain elastic deformation, or made of a soft rubber plug, and when made of the soft rubber plug, the connecting piece itself and the first needle tube 2 form a sealed connection, and the connection can be more reliable through the adhesion of course by glue, the through hole 40 on it just can set to the slit, make things convenient for the installation of second needle tubing 3 and avoid the outflow of glue solution, when being made by hard material, then can adopt glue or the sealing washer of cover on the connecting piece 4 to realize with sealed between the first needle tubing 2, the connecting piece that any kind of material made, second needle tubing 3 inserts in the through hole 40 on the connecting piece 4, that is to say that the external diameter of second needle tubing 3 is less than the internal diameter of first needle tubing 2, the internal diameter of second needle tubing 3 just must be less than the internal diameter of first needle tubing 2, just formed the structure that the glue solution circulation passageway is narrowed by the width, second needle tubing 3 is that the matching is inserted in the through hole 40 and just means that also between second needle tubing 3 and the connecting piece 4 is close contact, because the glue solution all is the glue solution that has certain viscosity, just also can not flow out from the junction between them yet. In the second case, the connecting element 4 is embedded in the second needle tube 3, and the first needle tube 2 is inserted into the through hole 40 of the connecting element 4, which means that the outside diameter and inside diameter of the first needle tube 2 are smaller than the inside diameter of the second needle tube, and the formed glue solution flow channel is narrow and wide.

The second connection mode is that the first needle tube 2 and the second needle tube 3 are in threaded connection, a sealing ring is arranged at the joint, and the same two conditions are also divided into two conditions, namely the first condition, the inner diameter and the outer diameter of the second needle tube 3 are smaller than the inner diameter of the first needle tube 2, at the moment, an internal thread is arranged in the first needle tube 2, an external thread is arranged on the outer wall of the second needle tube 3, the two needle tubes are connected through the threaded connection between the two, the disassembly and the assembly are more convenient, the sealing ring sleeved on the second needle tube 3 is arranged at the tail part of the external thread of the second needle tube 3 for sealing to realize sealing, or the sealing ring is arranged at the head part of the internal thread of the first needle tube 2 to realize sealing, and a flow channel of glue solution with the narrowed width is formed under the; the second condition, the internal and external diameter of first needle pipe 2 all is less than the internal diameter of second needle pipe 3, then sets up the external screw thread at the outer wall of first needle pipe 2, and the inside of second needle pipe 3 sets up the internal thread, and both are with the cooperation threaded connection who passes the internal and external screw thread, and what formed under this condition is then by the circulation passageway of the glue solution of narrow widen.

The third kind connected mode is, first needle tubing 2 and second needle tubing 3 are connected through a connecting assembly, coupling assembling includes the connector, matches the fixed cover of cover on the connector, be provided with on the connector along the opening seam of radial distribution and the connector match and fixed cover establish the tip at first needle tubing 2 or second needle tubing 3, fixed cover activity cover is established at the tip of second needle tubing 3 or first needle tubing 2 and cup joints with the connector and reduces the opening seam clearance mutually, also has different glue solution circulation passageway because the difference of internal diameter forms between same two needle tubing, when the connector is fixed to overlap on the tip of first needle tubing 2 this moment, then fixed cover is just movable cover on the tip of second needle tubing 3, when connecting two needle tubing, aligns two needle tubing earlier, and second needle tubing 3 has just also entered the connector, then moves fixed cover and then matches the cover on the connector, thereby just can reduce the clearance of opening seam on the connector through the removal of fixed cover on the connector and just overlap the second needle tubing 3 with the connector is also fixed, and then just couple together two needle tubing, and the connection of fixed cover and connector then can be realized through the mode of threaded connection or joint, and fixed cover then can be hollow round platform column structure, and the connector is corresponded to the one end that the bore is big, is close to the one end (the near-end) of connector promptly, and little one end is in the distal end of connector.

In a further improvement, as shown in fig. 3, the end of the second needle tube 3 is provided with at least two notches 30 that are symmetrical in the radial direction, and when dispensing, the glue solution flows out from the end outlet of the needle tube and the notches 30 at the same time, so that the glue layer can have a certain width and a certain height when dispensing, and the dispensing process with requirements on the height of the glue layer is met, thereby saving the glue amount and improving the dispensing efficiency. For the shape of the notch 30, the notch 30 is in any one shape of triangle, wedge, circular arc and square, and is selected according to the requirement of the spot adhesive layer.

In a further improvement, as shown in fig. 4, the tail portion of the second needle tube 3 is connected with the first needle tube 2, the head portion is bent to form a bent portion 31, and the end face of the head portion of the second needle tube 3 where the outlet is located is parallel to the tail portion of the second needle tube 3, so that dispensing on parts which are not easy to see, such as dispensing on the inner wall of a workpiece, is facilitated.

In a further improvement, the second needle tube 3 is a soft plastic needle head, and the needle head can be inserted into the crack of some workpieces for dispensing through the soft plastic needle head without damaging the workpieces.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims (8)

1. A reducing needle is characterized in that: the needle holder is fixedly connected with a first needle tube, the first needle tube is detachably and hermetically connected with a second needle tube, and the first needle tube and the second needle tube have different inner diameters and are communicated with each other inside.

2. The variable diameter needle according to claim 1, wherein: the connecting piece is embedded in the first needle tube or the second needle tube in a sealing mode, a through hole matched with the outer diameter of the second needle tube or the outer diameter of the first needle tube is formed in the middle of the connecting piece, and the second needle tube or the first needle tube is inserted into the through hole in a matching mode.

3. The variable diameter needle according to claim 1, wherein: the first needle tube and the second needle tube are in threaded connection, and a sealing ring is arranged at the joint.

4. The variable diameter needle according to claim 1, wherein: first needle tubing and second needle tubing pass through a coupling assembling to be connected, coupling assembling includes the connector, matches the fixed cover of cover on the connector, be provided with on the connector along the opening seam of radial distribution and connector match and fixed cover establish the tip at first needle tubing or second needle tubing, fixed cover movable sleeve establishes the tip at second needle tubing or first needle tubing and cup joints mutually with the connector and reduces the opening seam clearance.

5. The variable diameter needle according to claim 1, wherein: the end part of the second needle tube is provided with at least two notches which are symmetrical in the radial direction.

6. The variable diameter needle according to claim 5, wherein: the notch is in any one shape of triangle, wedge, circular arc and square.

7. The variable diameter needle according to claim 1, wherein: the tail part of the second needle tube is connected with the first needle tube, the head part of the second needle tube is bent to form a bent part, and the end face where the outlet of the head part of the second needle tube is located is parallel to the tail part of the second needle tube.

8. The variable diameter needle according to claim 1, wherein: the second needle tube is a soft plastic needle head.

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