阅读说明：本技术 一种小型化管壳平行缝焊工装夹具及其使用方法 (Small-sized pipe shell parallel seam welding tool clamp and using method thereof ) 是由 向圆 陈浩凌 李彪 刘文军 明源 欧阳径桥 于 2021-09-23 设计创作，主要内容包括：本发明公开一种小型化管壳平行缝焊工装夹具及其使用方法,包括下基座,下基座上设有一组用于定位管壳的第一定位槽,下基座通过一组定位销可拆卸连接上盖体,上盖体上设有一组与定位槽位置相对应的定位安装槽孔,每个定位安装槽孔的孔边缘对称设有两个用于焊轮避让夹具的避让缺口；定位安装槽孔为台阶形通孔槽,包括与管壳定位配合的第二定位槽以及与盖板定位配合的第三定位槽,第二、第三定位槽同轴连通,第二定位槽槽口位于上盖体的下端面且槽底用于限位配合管壳焊接端面,三定位槽槽底用于限位配合盖板端面。本发明能够精准定位小型化的管壳和盖板,正确匹配两待加工件的位置,可以批量化生产,提高了小型化管壳平行缝焊封盖效率及封盖质量。(The invention discloses a miniaturized tube shell parallel seam welding tool clamp and a using method thereof, wherein the tool clamp comprises a lower base, a group of first positioning grooves for positioning a tube shell are arranged on the lower base, the lower base is detachably connected with an upper cover body through a group of positioning pins, a group of positioning installation slotted holes corresponding to the positioning grooves are arranged on the upper cover body, and two avoidance notches for avoiding a clamp by a welding wheel are symmetrically arranged at the hole edge of each positioning installation slotted hole; the positioning installation groove hole is a step-shaped through hole groove and comprises a second positioning groove in positioning fit with the tube shell and a third positioning groove in positioning fit with the cover plate, the second positioning groove and the third positioning groove are coaxially communicated, the notch of the second positioning groove is located on the lower end face of the upper cover body, the groove bottom of the second positioning groove is used for limiting the welding end face of the tube shell in fit, and the groove bottom of the third positioning groove is used for limiting the end face of the cover plate in fit. The invention can accurately position the miniaturized tube shells and the cover plate, correctly match the positions of two workpieces to be processed, can realize batch production, and improves the efficiency and the quality of the parallel seam welding cover sealing of the miniaturized tube shells.)

1. The utility model provides a parallel seam welding frock clamp of miniaturized tube shell, includes lower base (1), its characterized in that:

a group of first positioning grooves (11) for positioning the tube shell are formed in the lower base (1), the lower base (1) is detachably connected with an upper cover body (3) through a group of positioning pins (2), a group of positioning installation slotted holes (4) corresponding to the positioning grooves (11) are formed in the upper cover body (3), and two avoidance notches (5) for avoiding the welding wheel from the clamp are symmetrically formed in the hole edge of each positioning installation slotted hole (4);

the positioning installation groove hole (4) is a step-shaped through hole groove and comprises a second positioning groove (41) matched with the tube shell in a positioning mode and a third positioning groove (42) matched with the cover plate in a positioning mode, the second positioning groove and the third positioning groove are coaxially communicated, the notch of the second positioning groove (41) is located on the lower end face of the upper cover body (3), the groove bottom of the second positioning groove is used for limiting the welding end face of the matched tube shell, and the groove bottom of the third positioning groove (42) is used for limiting the welding end face of the matched cover plate.

2. The parallel seam welding frock clamp of miniaturized tube shell of claim 1, characterized by: and the hole edge of the positioning installation slotted hole (4) is also provided with an observation hole (43).

3. The parallel seam welding frock clamp of miniaturized tube shell of claim 2, characterized in that: the lower base (1) and the upper cover body (3) are respectively provided with a group of pin holes (21) matched with the positioning pins (2), and the lower end face of the lower base (1) is also provided with a group of elliptical holes (12) connected with the workbench of the parallel welding machine in a positioning manner.

4. The parallel seam welding frock clamp of miniaturized tube shell of claim 3, characterized by: the first positioning grooves (11) are distributed in a matrix.

5. The parallel seam welding frock clamp of miniaturized tube shell of claim 4, characterized by: and a pin groove (11 a) for preventing the pins of the tube shell from interfering the positioning of the tube shell is arranged in the first positioning groove (11).

6. The parallel seam welding frock clamp for miniaturized shells of pipes according to claim 1 or 5, characterized in that: the lower base (1) and the upper cover body (3) are made of metal materials with good heat conductivity.

7. The method for using the parallel seam welding tool clamp for the miniaturized shell of the tube according to any one of the claims 1 to 6, which is characterized by comprising the following steps:

s1: the upper cover body (3) is inverted to enable the lower end surface of the upper cover body to face upwards, and a cover plate to be processed is placed into a third positioning groove (42) of the upper cover body (3) for limiting;

s2: the pipe shell to be processed is placed in the second positioning groove (41) of the cover body (3) in an inverted mode for limiting, the surface to be welded at the front end of the pipe shell is in contact with the cover plate, and the rear end of the pipe shell is exposed;

s3: the lower base (1) is inverted on the upper cover body (3) through a group of positioning pins (2), and the exposed part of the pipe shell is positioned in the first positioning groove (11);

s4: integrally turning over the upper cover body (3) and the lower base (1) to be upright and fixing the upper cover body and the lower base on a parallel welding line machine, starting the parallel welding line machine, and pre-welding and fixing a cover plate through an avoiding notch (5) by a welding wheel;

s5: after the cover plate is pre-welded and fixed, the cover plate is completely welded after the upper cover body (3) is taken down.

Technical Field

The invention relates to the technical field of semiconductor device packaging, in particular to a parallel seam welding tool clamp for a miniaturized tube shell and a using method thereof.

Background

With the rapid development of science and technology, electronic products are applied more and more widely in various industries and are developed towards high reliability, small size and high integration level. The same is true in high-end fields, such as military, aviation, aerospace, automotive electronics and other fields, which put forward severe requirements on reliability, miniaturization and low cost for electronic products, the traditional non-airtight plastic package is difficult to meet the reliability requirement, and the ceramic Kovar integrated package tube shell and the metal integrated package tube shell become a preferred one, the reliability of the product is ensured by the excellent airtightness of the ceramic Kovar integrated package tube shell and the metal integrated package tube shell, the ceramic Kovar integrated package tube shell is relatively compact and low in manufacturing cost, and the requirements of most high-reliability devices can be met. The final process of the packaging product is capping, and how to finish the airtight cover with high quality and high efficiency is the key for ensuring the reliability of the product.

The parallel seam welding capping process method is used for realizing the airtight welding between the cover plate and the tube shell, is an airtight packaging technology with low thermal stress, small temperature rise, high air tightness and high reliability, can realize the packaging of various rectangular and round products with a certain size range of more than 1mm, has low manufacturing cost, and is widely applied to the field of packaging of ceramic Kovar integrated tube shells and metal integrated packaging tube shells.

The parallel seam welding has the working principle of resistance welding, heat is generated through contact resistance between a welding electrode and a cover plate and is conducted to the contact surface of the cover plate and an enclosure frame to enable a coating to be melted to form metallurgical bonding, a good airtight welding seam is formed through mutual overlapping of a series of welding spots, and a high-reliability airtight cover is achieved. However, the existing parallel seam welding capping equipment mainly caps a single manual product, has high labor intensity and long working time, and the capacity is difficult to meet the increasingly strong market demand, thereby becoming a bottleneck process which restricts the large-scale application of the type of packaging products. To increase efficiency and increase productivity, array parallel seam welding packaging becomes a necessary choice.

However, there are many factors that affect the quality of parallel seam welding, such as the design of the fixture, the quality of the cover plate, the matching between the cover plate and the tube shell, the condition of the electrode, and the matching of each process parameter of the parallel seal welding. The best effect of parallel seam welding packaging can be obtained only through the influence of the change of each process parameter on the parallel seam welding heat in the parallel seam welding process and the mutual matching of the process parameters. Especially for the circuit with smaller size, the primary condition of good parallel seam welding effect is to fix the circuit well. The size of the ceramic/metal tube shell which needs to be subjected to parallel seam welding reaches about 2.0mm, the ceramic/metal tube shell is small in size and light in weight, and how to ensure that a device does not displace in the packaging process is an increasingly troublesome problem in conventional production.

Based on the existing problem, for improving parallel seam welding closing cap efficiency, avoid the product to remove to lead to the unqualified condition of encapsulation when the closing cap of small-size tube, design a parallel seam welding anchor clamps and become a problem that awaits the solution urgently.

Disclosure of Invention

In order to solve the problems, the invention provides a parallel seam welding tool clamp for a miniaturized tube shell and a using method thereof, which can improve the parallel seam welding and sealing efficiency and the sealing quality of the miniaturized tube shell.

The invention adopts the following technical scheme:

the utility model provides a parallel seam welding frock clamp of miniaturized tube, includes lower base, its characterized in that:

the lower base is provided with a group of first positioning grooves for positioning the pipe shell, the lower base is detachably connected with the upper cover body through a group of positioning pins, the upper cover body is provided with a group of positioning installation slotted holes corresponding to the positioning grooves in position, and the hole edge of each positioning installation slotted hole is symmetrically provided with two avoidance notches for avoiding the clamp by using a welding wheel;

the positioning installation groove hole is a step-shaped through hole groove and comprises a second positioning groove in positioning fit with the tube shell and a third positioning groove in positioning fit with the cover plate, the second positioning groove and the third positioning groove are coaxially communicated, the notch of the second positioning groove is located on the lower end face of the upper cover body, the groove bottom is used for limiting and matching the welding end face of the tube shell, and the groove bottom of the three positioning grooves is used for limiting and matching the end face of the cover plate.

Furthermore, the hole edge of the positioning installation slotted hole is also provided with an observation port.

Furthermore, a group of pin holes matched with the positioning pins are respectively formed in the lower base and the upper cover body, and a group of elliptical holes connected with the parallel welding machine workbench in a positioning mode are further formed in the lower end face of the lower base.

Further, the first positioning grooves are distributed in a matrix.

Furthermore, a pin groove for preventing the pins of the tube shell from interfering the positioning of the tube shell is arranged in the first positioning groove.

Furthermore, the lower base and the upper cover body are made of metal materials with good heat conductivity.

The invention also discloses a use method of the parallel seam welding tool clamp for the miniaturized tube shell, which is characterized by comprising the following steps of:

s1: inverting the upper cover body to enable the lower end surface of the upper cover body to face upwards, and placing the cover plate to be processed into a third positioning groove of the upper cover body for limiting;

s2: the pipe shell to be processed is placed in the second positioning groove of the cover body in an inverted mode for limiting, the surface to be welded at the front end of the pipe shell is in contact with the cover plate, and the rear end of the pipe shell is exposed;

s3: the lower base is inverted on the upper cover body through a group of positioning pins, and the exposed part of the pipe shell is positioned in the first positioning groove and the first positioning groove;

s4: integrally turning over the upper cover body and the lower base, rightly placing and fixing the upper cover body and the lower base on a parallel welding line machine, starting the parallel welding line machine, and pre-welding and fixing a welding wheel on a cover plate through an avoiding notch;

s5: and after the cover plate is pre-welded and fixed, the cover plate is completely welded after the upper cover body is taken down.

The invention has the following beneficial effects: the pipe shell and the cover plate which can be accurately positioned and miniaturized are correctly matched with two positions of a to-be-processed part, and can be produced in batch, so that the efficiency and the quality of the parallel seam welding cover sealing of the miniaturized pipe shell are improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial view taken from the direction A of FIG. 1;

FIG. 3 is a cross-sectional view C-C of FIG. 2;

FIG. 4 is a view partially in section B of FIG. 1;

in order to make the sectional structure of fig. 3 show the characteristic parts more clearly and concisely, the avoidance gap, the observation opening and the back gouging groove are partially omitted.

Detailed Description

In order to make the present invention more clearly understood, the following further describes a miniaturized tube shell parallel seam welding tooling fixture and a method for using the same, with reference to the attached drawings, and the specific embodiments described herein are only used for explaining the present invention and are not used for limiting the present invention.

As shown in figure 1, the parallel seam welding tooling clamp for the miniaturized tube shell comprises a lower base 1, a positioning pin 2 and an upper cover body 3. The lower base 1 is a rectangular plate made of metal materials with good heat conductivity, such as copper alloy and aluminum alloy, a group of first positioning grooves 11 are arrayed on the upper surface of the lower base, the groove shape of each first positioning groove 11 is matched with the outer contour of the tube shell 61, and the positioning function of the tube shell 61 is realized through clearance fit of the first positioning grooves and the outer contour of the tube shell 61. The bottom of the first positioning groove 11 is parallel to the upper surface of the lower base 1 for supporting the tube case 61. A group of pin grooves 11a are arranged in the first positioning groove 11, and the pin grooves 11a are used for avoiding pins of the tube shell 61 and preventing the pins from interfering with the positioning of the tube shell 61 body. The positions and the sizes of the pin grooves 11a are correspondingly arranged according to the structural form of the pins of the tube shell 61, the pins of the tube shell 61 are in a double-row in-line mode, the positions of the pin grooves 11a are symmetrically distributed on two sides of the first positioning groove 11, and the pin grooves 11a penetrate through the whole lower base 1. Two round pin holes 21 are formed in the upper surface of the lower base 1, the pin holes 21 are formed in adjacent edge areas, the pin holes 21 are connected with one end sides of the positioning pins 2 in a matched mode, in order to take the positioning function and the assembling performance of the clamp into consideration, the pin holes 21 are in clearance fit with the positioning pins 2, and the positioning pins 2 are cylindrical positioning pins. The lower surface of the lower base 1 is also provided with two elliptical holes 12 (which can be through holes or blind holes), the elliptical holes 12 are arranged in adjacent edge areas, the elliptical holes 12 are connected with pins (not marked in the figure) for positioning the workbench of the parallel welding machine, the x-direction and y-direction fine adjustment and positioning effects can be achieved on the lower base 1, and finally the lower base 1 is fixed on the workbench of the parallel welding machine through the pressing of a limiting plate (not marked in the figure).

As shown in fig. 1 and 2, the upper cover 3 is a rectangular plate and made of the same material as the lower base 1. The area of the adjacent side on the large surface of the upper cover body 3 is provided with a round pin hole 21, and the pin hole 21 is matched and connected with the other end side of the positioning pin 2. A group of positioning installation slotted holes 4 are also arranged on the large surface of the upper cover body 3 in a matrix mode, and the positions of the positioning installation slotted holes 4 correspond to the positions of positioning grooves 11 after the whole clamp is assembled. Two avoidance notches 5 are symmetrically arranged at the hole edge of each positioning installation slotted hole 4, each avoidance notch 5 is semicircular, the side line of the avoidance notch 5 is in smooth transition connection with the hole edge of the positioning installation slotted hole 4, and the avoidance notch 5 penetrates through the upper cover body 3. On the perpendicular line of two dodge breach 5 lines, be equipped with two viewing aperture 43, its structure is the same with dodge breach 5, is semi-circular and is connected the mellow and full with the hole limit of location installation slotted hole 4, and viewing aperture 43 runs through upper cover body 3. Fig. 2 shows a front view of the upper surface of the upper cover 3: the whole shape of the positioning installation slot hole 4, the avoiding gap 5 and the observation port 43 is a big circle, 4 small circles are arrayed on the circumference of the circle center of the big circle, the circle center of each small circle is arranged on the edge line of the big circle, and the outline of each small circle is connected to form a pattern in a smooth mode.

As shown in fig. 3 and 4, the positioning and mounting slot 4 is a stepped through hole slot, and includes a second positioning slot 41 in positioning fit with the tube case 61 and a third positioning slot 42 in positioning fit with the cover plate 62, the bottom of the second positioning slot 41 is used for limiting and fitting the welding end surface of the tube case 61, and considering that the second positioning slot 41 may have a fillet interference phenomenon in the processing process, four top corners of the second positioning slot 41 are respectively provided with a root cleaning slot 44 to ensure that the second positioning slot is matched with the tube case 61 in place. The bottom of the three positioning grooves 42 is used for limiting and matching the end surface of the cover plate 62. The second positioning groove and the third positioning groove are positioned through shapes, and the groove-shaped edges of the second positioning groove and the third positioning groove are formed by discontinuous line segments due to the fact that the avoidance notch 5 and the observation opening 43 are through grooves, and are respectively in positioning fit in the x direction and the y direction through the positioning grooves with the notches.

As shown in fig. 3, the avoidance gap 5, the viewing port 43 and the back gouging groove portion are omitted for a clearer and more concise display of the second and third detent structures. Go up lid 3 and be equipped with second constant head tank 41 and third constant head tank 42 in proper order by the direction of the supreme terminal surface of lower terminal surface, the 41 notch size of second constant head tank is greater than the 42 notch size of third constant head tank, and the coaxial intercommunication of two constant head tanks, still be equipped with the breach 5 and the viewing aperture 43 of dodging that run through on the sharing axis, the 41 notch of second constant head tank is located the lower terminal surface of last lid 3, secondly, the third constant head tank bottom all is parallel with the lower terminal surface of last lid 3, third constant head tank 42 groove depth is the same with apron 62 thickness, apron 62 includes the cladding material on its body.

The shapes of the first positioning groove, the second positioning groove and the third positioning groove are determined according to the shape of the matched positioning part, and can be rectangular, circular and the like, and the shapes of the parts of the embodiment are all rectangular. After the assembly of the tool clamp, the sum of the depths of the first positioning groove and the second positioning groove is the same as the thickness of the tube shell 61 body (including the thickness of a coating of the tube shell 61 body), and the tube shell 61 and the cover plate 62 are completely positioned through the first positioning groove, the second positioning groove and the third positioning groove.

The use method of the tool clamp comprises the following steps:

s1: the upper lid 3 is placed upside down on the horizontal plane so that the lower end surface faces upward, and a set of cover plates 62 to be processed is placed in the third positioning grooves 42 of the upper lid 3 for positioning.

S2: the front part of the tube shell 61 to be processed is inversely placed in the second positioning groove 41 of the cover body 3 for limiting, namely, the surface to be welded at the front end of the tube shell 61 is contacted with the bottoms of the two positioning grooves 41 and the surface to be welded of the cover plate 62, and the rear part of the tube shell 61 is exposed outside the upper cover body 3.

S3: two positioning pins 2 are respectively arranged in pin holes 21 of an upper cover body 3, a lower base 1 is inverted, the pin holes 21 on the lower base 1 are aligned with the positioning pins 2 and slowly inserted until the lower base 1 is completely contacted with the surface of the upper cover body 3, whether the exposed part of a pipe shell 61 inclines or not is noticed in the matching process, and the exposed part of the pipe shell 61 is completely positioned in a first positioning groove 11 in the downward moving process of the lower base 1.

S4: the upper cover 3 and the lower base 1 are turned over and aligned, and the observation opening 43 is used to observe whether the cover plate 62 and the tube shell 61 are matched in place, and if so, the steps S1-S3 are repeated. After the parts are matched in place, the lower base 1 is provided with two elliptical holes 12 for adjustment and is fixed on a workbench of a parallel welding machine, and the upper cover body 3 is pressed when the parts are not matched; and starting the parallel welding machine, and simultaneously pre-welding and fixing the two sides of the cover plate 62 by the welding wheel through the avoiding gap 5. The upper cover body 3 and the lower base 1 are required to be ensured not to generate relative displacement in the integral overturning process.

S5: after all the cover plates 62 in the tool fixture are pre-welded and fixed, the upper cover body 3 is slightly taken down, and then the cover plates 62 are completely welded.

In the using process, the distance between the cover plate 62 and the edge of the pipe shell 61 is found through the observation port 43, the distance between two positions of the same matched workpiece to be processed is compared, and whether the two workpieces to be processed are matched in place or not can be judged in a human eye observation or machine detection mode; the elliptical hole 12 is arranged in the adjacent side area of the bottom surface of the lower base 1, the micro adjustment of the elliptical hole corresponds to the x direction and the y direction respectively, and the micro adjustment in two directions can be carried out on a workbench of a parallel welding machine, so that the positioning use is facilitated; the position precision of the pin holes 21 in the lower base 1 and the upper cover body 3 is higher than that of the first positioning groove, the second positioning groove and the third positioning groove, and under the condition that the placing positions of the cover plate and the tube shell are correct, the corresponding positions of the lower cover plate and the tube shell can be guaranteed to be accurate through the positioning pins 2.

The invention can accurately position the miniaturized tube shell and the cover plate, correctly match the positions of two workpieces to be processed, can be produced in batch and provide conditions for mass production; the whole assembly of the tool clamp is simple, the operation is convenient, and the sealing efficiency and the sealing quality of the parallel seam welding of the miniaturized tube shell are improved.