CN210187624U

CN210187624U - Silver glue squeezing device

Info

Publication number: CN210187624U
Application number: CN201920889296.5U
Authority: CN
Inventors: Ruiming Liu; 刘睿明; Jian Liu; 刘剑; Hua Hou; 侯华
Original assignee: Chengdu Advanced Power Semiconductor Co Ltd
Current assignee: Chengdu Advanced Power Semiconductor Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-03-27
Anticipated expiration: 2029-06-13

Abstract

The utility model relates to a crowded mucilage binding field, concretely relates to crowded mucilage binding of silver colloid is put. The device comprises a sleeve, a baffle, a clamping plate and a push rod, wherein the front end of the sleeve is a pipe orifice, the rear end of the sleeve is provided with a side wing, and the surface of the side wing is provided with a first groove; when the silver rubber tube is arranged in the sleeve, the rubber outlet of the silver rubber tube extends out of the tube opening at the front end of the sleeve; the baffle is arranged on the surface of the side wing at the rear end of the sleeve, so that the silver colloid pipe is fixed in the sleeve; the baffle plate can be fixed on the rear side of the side wing at the rear end of the sleeve by the clamping plate, so that the silver rubber tube is stably installed; a hole is formed in the baffle plate, and the push rod penetrates through the hole formed in the baffle plate; under the action of external force, the push rod can displace towards the front end of the sleeve, and then the push head in the silver colloid pipe is pushed to extrude the silver colloid. By using the device, the shaking of the push rod in the pushing process is avoided, so that the extrusion amount of the silver colloid is more uniform, and the damage to the steel plate mesh is avoided; the operation is convenient by one hand, and the silver colloid layering caused by temperature rise is avoided.

Description

Silver glue squeezing device

Technical Field

The utility model relates to a crowded mucilage binding is put, especially a crowded mucilage binding is put for silver-colored glue.

Background

The wbc (wafer back side coating) process requires the wafer to be held with silver paste before it is diced. In the prior art, the silver colloid is placed on a steel screen plate and then printed by a scraper, so that a silver colloid layer matched with the size of a wafer is obtained. The thickness of the silver paste layer is about 10-15 microns. The thickness of the adopted steel mesh plate is the same as that of the silver glue layer and is also 10-15 microns. Because the thickness of the steel mesh plate is small, when the silver colloid is unevenly distributed on the steel mesh plate, the steel mesh plate is easy to be damaged due to uneven local pressure in the scraping process of the scraper. This requires that the uniformity of the silver paste be ensured when the silver paste is applied to the steel mesh plate.

At present, the silver colloid is sold by a device in the form of an injector, and in the using process, a pushing rod is required to be arranged in a pipe barrel to push the pipe barrel to extrude the silver colloid.

The distance between the pushing head in the silver rubber tube and the tail of the silver rubber tube is small, only a small part of the pushing rod can enter the pipe barrel, and the pushing rod is easy to shake when pushed. The extrusion speed of the silver colloid is not easy to control. Causing inconvenience in the glue extruding process and uneven glue extruding, and further damaging the steel screen plate.

And the lateral wing at the tail end of the silver colloid pipe is shorter, so that the propelling operation by one hand is not easy to carry out. A two-handed control is required,

in the process of two-hand operation, one hand holds the silver rubber tube and the other hand pushes the push rod. The holding handle can transfer heat to the silver colloid in the pipe, the silver colloid is heated and is easy to delaminate, and the silver powder and the adhesive in the silver colloid are separated, so that the adhesive force and the conductivity of the product are influenced.

When using the silver colloid, there are the push rod and easily rock, inconvenient one-hand operation, both hands operation temperature transmission lead to the silver colloid layering scheduling problem.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the silver colloid extrusion device is provided aiming at the problem that a push rod in the prior art is easy to shake, and a silver colloid tube side wing is short and is not easy to operate by one hand and the silver colloid is layered due to heat transfer. The device avoids shaking of the push rod in the pushing process, can be operated by a single hand conveniently, and avoids silver colloid layering caused by temperature rise. By using the device, the extrusion amount of the silver colloid is more uniform, and the damage to the steel mesh plate is reduced. And the influence of silver colloid layering on the bonding force and the conductivity of the product is also avoided.

In order to realize the purpose, the utility model discloses a technical scheme be:

a silver colloid extruding device comprises a sleeve, a baffle, a clamping plate and a push rod, wherein the front end of the sleeve is a pipe orifice, the rear end of the sleeve is provided with a side wing, and the surface of the side wing is provided with a first groove; when the silver rubber tube is arranged in the sleeve, the rubber outlet of the silver rubber tube extends out of the tube opening at the front end of the sleeve, and the side wing of the silver rubber tube is matched with the first groove; the baffle is arranged on the surface of the side wing at the rear end of the sleeve, so that the silver colloid pipe is fixed in the sleeve; the baffle plate can be fixed on the rear side of the side wing at the rear end of the sleeve by the clamping plate, so that the silver rubber tube is stably installed; the baffle is provided with a hole, and the push rod penetrates through the hole in the baffle; under the action of external force, the push rod can displace towards the front end of the sleeve, and then the push head in the silver colloid pipe is pushed to extrude the silver colloid.

During the extrusion process of the silver paste by using the device, the shaking of the push rod in the pushing process is avoided. The extrusion amount of the silver colloid is more uniform, and the damage to the steel mesh plate caused by the scraping of the scraper is reduced.

The device has promoted maneuverability through the width that increases the flank, makes things convenient for one-hand operation.

As a preferred scheme of the utility model, a rod head is arranged at the front end of the push rod, and the sectional area of the rod head is larger than that of the push rod; the rod head is matched with the inner diameter of the silver rubber pipe.

The contact area of the push rod and the push head of the silver rubber tube is increased, and the shaking of the push rod in the pushing process is reduced.

As a preferred scheme of the utility model, the club head is a cylinder, and the bottom surface of the cylinder is fixedly connected with the front end of the push rod; the diameter of the rod head cylinder is larger than that of the push rod, and the diameter of the rod head is smaller than that of the silver rubber tube.

Further reduce the rocking of push rod in the propulsion process.

As the preferred scheme of the utility model, the sleeve pipe lateral wall is equipped with the fretwork window.

As the preferred scheme of the utility model, the side of fretwork window is equipped with the scale.

The residual silver colloid amount in the silver colloid tube is convenient to observe.

As the utility model discloses an optimal scheme, be equipped with the spacing recess of second on the baffle, be provided with spacing arch on the sheathed tube flank terminal surface, the spacing recess of second with locate spacing arch matches on the flank.

As the utility model discloses an optimal scheme, the spacing recess of second is spacing hole, spacing arch is spacing post.

The two schemes prevent the displacement when the baffle is combined with the side wing in the assembling process.

As a preferable aspect of the present invention, the baffle is made of an elastic material; when the force applied to the push rod along the extension direction is smaller than the threshold value, the baffle plate limits the push rod to move back and forth.

The elastic material plays a role in damping in the propelling process. The propulsion force is controlled.

As a preferable embodiment of the present invention, the elastic material is rubber.

As the preferred proposal of the utility model, the end of the push rod is provided with a push handle.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. provides a silver paste squeezing device. When the device is used for extruding the silver paste, the push rod is prevented from shaking in the pushing process. The extrusion amount of the silver colloid is more uniform, and the damage to the steel mesh plate caused by the scraping of the scraper is reduced.

2. The device has promoted maneuverability through the width that increases the flank, makes things convenient for one-hand operation.

3. By using the device, the separation of silver powder and adhesive caused by the heat transferred to the silver colloid tube by the holding hand is avoided, and the influence of the adhesive force and the conductivity of the silver colloid on the product is further avoided.

Drawings

FIG. 1 is a schematic diagram of the use of a prior art silver paste;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a schematic view of the structure assembly of the present invention;

FIG. 4 is an exploded view of the present invention;

the labels in the figure are: 1-sleeve, 2-baffle, 3-splint, 4-push rod, 5-flank, 6-silver rubber tube, 11-tube orifice, 12-hollowed window, 41-rod head, 42-pushing handle, 51-first groove, 52-limiting column, 22-limiting hole, 61-silver rubber tube flank and 62-silver rubber tube pushing head.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Fig. 1 is a schematic diagram of a conventional silver paste using process. The side wing of the existing silver rubber tube is short, so that the operation is inconvenient; in the using process, the pushing rod is arranged at the rear end of the silver rubber tube, but the length of the pushing rod penetrating into the silver rubber tube is short, and the pushing rod is easy to shake in the pushing process, so that the glue extruding is not uniform.

Examples

As shown in fig. 2-4, the silver paste squeezing device in this embodiment includes a sleeve 1, a baffle 2, a clamping plate 3 and a push rod 4, wherein a push head 41 is disposed at the front end of the push rod, and the diameter of the push head is slightly smaller than the inner diameter of the silver paste tube. The end of the push rod is provided with a push handle 42.

When the silver rubber tube 6 is placed in the sleeve 1, the lateral wing 61 of the silver rubber tube is matched with the first groove 51 on the lateral wing 5 at the rear end of the sleeve. The glue outlet of the silver rubber tube extends out of the tube orifice 11 at the front end of the sleeve.

The baffle 2 is mounted to the side wings 5. Is limited by the limiting hole 22 on the side wing 2 and the limiting column 52 on the side wing 5. The clamping plate 3 clamps the side wing 5 and the baffle 2 in the middle to play a role in fixing.

The push rod 4 pushes the push head 62 of the silver colloid tube in the silver colloid tube to extrude the silver colloid from the colloid outlet.

By using the device, the shaking of the push rod in the pushing process is reduced, and the lateral wing is lengthened to facilitate the one-hand operation. The glue discharging is more uniform, the pressure on the steel plate net is uniform in the pushing process of the scraper, and the damage to the steel plate net is reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The silver colloid squeezing device comprises a sleeve, a baffle, a clamping plate and a push rod, and is characterized in that the front end of the sleeve is a pipe orifice, the rear end of the sleeve is provided with a side wing, and the surface of the side wing is provided with a first groove;

when the silver rubber tube is arranged in the sleeve, the rubber outlet of the silver rubber tube extends out of the tube opening at the front end of the sleeve, and the side wing of the silver rubber tube is matched with the first groove;

the baffle is arranged on the surface of the side wing at the rear end of the sleeve, so that the silver colloid pipe is fixed in the sleeve;

the baffle plate can be fixed on the rear side of the side wing at the rear end of the sleeve by the clamping plate, so that the silver rubber tube is stably installed;

the baffle is provided with a hole, and the push rod penetrates through the hole in the baffle; under the action of external force, the push rod can displace towards the front end of the sleeve, and then the push head in the silver colloid pipe is pushed to extrude the silver colloid.

2. The silver paste extruding device according to claim 1, wherein a rod head is arranged at the front end of the push rod, and the sectional area of the rod head is larger than that of the push rod; the rod head is matched with the inner diameter of the silver rubber pipe.

3. The silver paste squeezing device according to claim 2, wherein the rod head is a cylinder, and the bottom surface of the cylinder is fixedly connected with the front end of the push rod; the diameter of the rod head cylinder is larger than that of the push rod, and the diameter of the rod head is smaller than that of the silver rubber tube.

4. The silver paste extruding device according to claim 1, wherein the side wall of the sleeve is provided with a hollowed-out window.

5. The silver paste extruding device according to claim 4, wherein a graduated scale is arranged on the side surface of the hollowed-out window.

6. The silver paste extruding device according to claim 1, wherein a second limiting groove is arranged on the baffle, a limiting protrusion is arranged on the end surface of the side wing of the sleeve, and the second limiting groove is matched with the limiting protrusion arranged on the side wing.

7. The silver paste extruding device according to claim 6, wherein the second limiting groove is a limiting hole, and the limiting protrusion is a limiting column.

8. The silver paste extruding device according to claim 1, wherein the baffle is made of an elastic material; when the force applied to the push rod along the extension direction is smaller than the threshold value, the baffle plate limits the push rod to move back and forth.

9. The silver paste extrusion device according to claim 8, wherein the elastic material is rubber.

10. The silver paste extrusion device according to claim 1, wherein a push handle is provided at the end of the push rod.