阅读说明：本技术 一种多搭接板可移动定位钎焊夹具 (Multi-lap-plate movable positioning brazing clamp ) 是由 凌祥 魏新龙 李念 于 2021-08-02 设计创作，主要内容包括：本发明公开了一种多搭接板可移动定位钎焊夹具,包括开有双凹槽的下底座、上盖板、定位销和滑动销,下底座的凹槽内开有多个定位销槽和滑动销槽,下底座的凹槽内可以放置四个下搭接板,通过定位销固定在定位销孔处,四个上搭接板一端搭放在下搭接板上形成搭接面,另外一端通过滑动销中间方形面支撑使得上下搭接板在搭接处保证平行,并且由滑动销在滑动销槽内移动来调整搭接面积大小,利用上盖板与上搭接板和定位销的上方形面直接接触固定。本发明可同时放置多个搭接板的钎焊夹具能够提高钎焊生产的效率,由于滑动销和滑动销槽的设计,能够灵活调整搭接板的搭接面积以及提高搭接的成功率,给生产带来了方便,并且结构简单、制造方便。(The invention discloses a multi-lap plate movable positioning brazing clamp which comprises a lower base, an upper cover plate, a positioning pin and a sliding pin, wherein the lower base is provided with double grooves, a plurality of positioning pin grooves and sliding pin grooves are formed in the grooves of the lower base, four lower lap plates can be placed in the grooves of the lower base and are fixed at the positions of the positioning pin holes through the positioning pin, one ends of the four upper lap plates are lapped on the lower lap plates to form lap surfaces, the other ends of the four upper lap plates are supported through a middle square surface of the sliding pin to ensure that the upper lap plates and the lower lap plates are parallel at the lap joints, the sliding pin moves in the sliding pin grooves to adjust the size of the lap area, and the upper cover plate is directly contacted and fixed with the upper lap plates and the upper profile of the positioning pin. The brazing clamp capable of simultaneously placing a plurality of lap plates can improve the efficiency of brazing production, and due to the design of the sliding pin and the sliding pin groove, the lap joint area of the lap plates can be flexibly adjusted and the lap joint success rate can be improved, so that convenience is brought to production, and the brazing clamp is simple in structure and convenient to manufacture.)

1. The utility model provides a many lap joint board portable positioning anchor clamps of brazing which characterized in that: the lap joint plate is arranged between the lower base and the upper cover plate;

the upper surface of the lower base is provided with two symmetrical grooves along the middle line, the grooves penetrate through the whole base surface, the lap joint plates are placed in the grooves, the inner surfaces of the grooves are provided with positioning pin holes and sliding pin grooves capable of sliding in short distance, and upper end corners on two sides of the lower base are designed to be unfilled corners, so that the lower base is in a boss form; the area of the upper cover plate is the same as that of the lower base;

the lap joint plate comprises an upper lap joint plate and a lower lap joint plate;

the lower lapping plate is provided with a positioning pin, the positioning pin is of a lower cylinder and upper square shape, the diameter of the lower cylinder is the same as that of the through hole of the lower lapping plate and that of the positioning pin hole, the lower lapping plate is positioned in the groove of the lower base through the positioning pin, and the positioning pin penetrates through the through hole of the lower lapping plate and is inserted into the positioning pin hole;

the upper lapping plate is provided with a sliding pin, the sliding pin is of a cylindrical shaft type with a square middle and two ends, the diameter of the shaft section of the sliding pin is consistent with the diameter of a through hole of the upper lapping plate and the width of a sliding pin groove, one end of the upper lapping plate is lapped on the lapping surface of the lower lapping plate, the other end of the upper lapping plate is lapped on the square middle surface of the sliding pin, one end of the sliding pin penetrates through the through hole of the upper lapping plate, and the other end of the sliding pin is arranged in the sliding pin groove.

2. The multi-lap plate moveable positioning brazing jig of claim 1, wherein: the square thickness of the upper half part of the positioning pin is consistent with the thickness of the upper lapping plate, and the side length of the square end is consistent with the width of the lower lapping plate.

3. The multi-lap plate moveable positioning brazing jig of claim 1, wherein: the thickness of the middle square plate of the sliding pin is equal to that of the lower lapping plate, the lower surface of the middle square plate of the sliding pin is in direct contact with the groove surface of the lower base, the length of the shaft end of the upper half part of the sliding pin is smaller than that of the upper lapping plate, and the length of the middle square side of the sliding pin is consistent with that of the upper lapping plate.

4. The multi-lap plate moveable positioning brazing jig of claim 1, wherein: the height of the lap joint of the upper lap joint plate and the lower lap joint plate is parallel to the upper surface of the square positioning pin plate, and the lap joint is higher than the depth of the groove.

5. The multi-lap plate moveable positioning brazing jig of claim 1, wherein: the upper cover plate is directly contacted with the upper surfaces of the upper lapping plate and the positioning pin square plate.

6. The multi-lap plate moveable positioning brazing jig of claim 1, wherein: four pairs of lapping plates are simultaneously placed in the two grooves of the lower base.

Technical Field

The invention belongs to the field of brazing clamps, and particularly relates to a multi-lap-plate movable positioning brazing clamp which can be used for manufacturing products related to a brazing lap joint process.

Background

The brazing method is mainly used for manufacturing precise heterogeneous metal sheet structural components, and is a welding method which simultaneously heats brazing filler metal and the weldment, which are lower than the melting point of the weldment, to the melting temperature of the brazing filler metal, and then fills gaps of solid workpieces with liquid brazing filler metal to connect metals. In order to improve the strength of a brazed workpiece, two plates are brazed together in an overlapping manner, and the overlapping length has no specific specified standard and is often determined according to actual production conditions. Most of brazing fixtures in the prior production can only complete the lapping of one workpiece, and the actual brazing production cannot meet the market demand due to low efficiency. The positioning design of the lap plate in the brazing fixture is also complex and complicated to operate. In the brazing process, the overlapping length of the two overlapping plates cannot be adjusted due to the positioning of the clamp, and when the overlapping length is too small, the situation that the part of the workpiece is not welded easily occurs due to the problem of workpiece placement, so that the produced overlapping workpiece is unqualified. In summary, how to achieve simultaneous welding of a plurality of overlapping workpieces in brazing, and enable an overlapping plate to have precise positioning in a fixture, and meanwhile, the overlapping length can be adjusted minutely to improve the production efficiency and the qualification rate of the overlapping workpieces is a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

The invention aims to solve the problems and provides a brazing clamp which is simple and reliable, has low manufacturing cost, can simultaneously lap four workpieces, can perform the status of a lap plate in the brazing process and can also finely adjust the lap length.

The technical scheme adopted by the invention is as follows: a multi-lap-plate movable positioning brazing clamp comprises a lower base, an upper cover plate and a lap plate, wherein the lap plate is arranged between the lower base and the upper cover plate;

the upper surface of the lower base is provided with two symmetrical grooves along the middle line, the grooves penetrate through the whole base surface, the lap joint plates are placed in the grooves, the inner surfaces of the grooves are provided with positioning pin holes and sliding pin grooves capable of sliding in short distance, and upper end corners on two sides of the lower base are designed to be unfilled corners, so that the lower base is in a boss form; the area of the upper cover plate is the same as that of the lower base, and the thickness of the upper cover plate is slightly thinner than that of the flat plate of the lower base;

the lap joint plate comprises an upper lap joint plate and a lower lap joint plate;

the lower lapping plate is provided with a positioning pin, the positioning pin is of a lower cylinder and upper square shape, the diameter of the lower cylinder is the same as that of the through hole of the lower lapping plate and that of the positioning pin hole, the lower lapping plate is positioned in the groove of the lower base through the positioning pin, and the positioning pin penetrates through the through hole of the lower lapping plate and is inserted into the positioning pin hole;

the upper lapping plate is provided with a sliding pin, the sliding pin is of a cylindrical shaft type with a square middle and two ends, the diameter of the shaft section of the sliding pin is consistent with the diameter of a through hole of the upper lapping plate and the width of a sliding pin groove, one end of the upper lapping plate is lapped on the lapping surface of the lower lapping plate, the other end of the upper lapping plate is lapped on the square middle surface of the sliding pin, one end of the sliding pin penetrates through the through hole of the upper lapping plate, and the other end of the sliding pin is arranged in the sliding pin groove. The upper lapping plate can move back and forth a small distance along with the sliding pin and is used for adjusting the lapping length of the upper lapping plate and the lower lapping plate.

Preferably, the square thickness of the upper half part of the positioning pin is consistent with the thickness of the upper lapping plate, and the side length of the square end is consistent with the width of the lower lapping plate.

Preferably, the thickness of the middle square plate of the sliding pin is equal to that of the lower lapping plate, the lower surface of the middle square plate of the sliding pin is in direct contact with the groove surface of the lower base, the length of the shaft end of the upper half part of the sliding pin is smaller than that of the upper lapping plate, and the length of the middle square plate of the sliding pin is consistent with that of the upper lapping plate.

Preferably, the height of the lap joint of the upper lap joint plate and the lower lap joint plate is parallel to the upper surface of the square positioning pin plate and is higher than the depth of the groove.

Preferably, the upper cover plate is directly contacted with the upper surfaces of the upper lapping plate and the positioning pin square plate, and the lapping plate is integrally supported.

Preferably, four pairs of lapping plates can be simultaneously placed in the two grooves of the lower base.

Has the advantages that: the invention provides a brazing clamp capable of simultaneously lapping four workpieces, wherein four pairs of lapping plates can be placed in two grooves of a lower base at the same time, the lower lapping plate is fixed, an upper lapping plate can move along with a sliding pin, and the sliding pin also plays a supporting role for the upper lapping plate, so that lapping surfaces of the upper lapping plate and the lower lapping plate are kept parallel as far as possible, the lapping plates are prevented from deviating due to uneven stress in the brazing process, the production efficiency is improved, and the yield of the lapped workpieces is also improved. Brings convenience to production, and has simple and reliable structure and convenient manufacture and use.

Drawings

FIG. 1 is a perspective view of a brazing jig according to the present invention.

FIG. 2 is a cross-sectional view of the overlapping portion of the brazing jig of the present invention.

FIG. 3 is a top view of a lower base of the brazing jig of the present invention.

FIG. 4 is a schematic perspective view of a brazing jig according to the present invention for overlapping a workpiece and a pin.

FIG. 5 is a perspective view of a sliding pin of the brazing jig of the present invention.

FIG. 6 is a schematic perspective view of a positioning pin of the brazing jig of the present invention.

Description of reference numerals:

1 is the lower base, 2 is the upper cover plate, 3 is the sliding pin, 4 is last lapping plate, 5 is lower lapping plate, 6 is the locating pin, 7 is the sliding pin groove, 8 is the locating pin hole, 9 is last lapping plate through-hole, 10 is the recess.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in FIG. 1, the multi-lap plate movably-positioning brazing jig of the invention comprises a lower base 1, an upper cover plate 2, a sliding pin 3 and a positioning pin 6. The lower base is used for placing the lapping plate and can place 4 pairs simultaneously, and every pair of lapping plate all has lower lapping plate 5 and last lapping plate 4, and the lapping plate of placing is closely covered by upper cover plate 2 and is pressed.

The lapping plate is as shown in fig. 4, the upper lapping plate 4 and the lower lapping plate 5 are metal plates with the same size, the thickness of the lapping plate is about 2mm, the width is 20mm, the length is 42.5mm, a through hole with the diameter of 6.2mm is opened at a proper position at one end of the lapping plate for positioning, the through hole of the lower lapping plate is fixed by a positioning pin 6 passing through, the length of the shaft end of the positioning pin is larger than the thickness 2mm of the lower lapping plate 5 for positioning, the lower surface of the square plate is tightly attached to the lower lapping plate 5, the through hole 9 of the upper lapping plate is positioned by a sliding pin 3 passing through, the overlapped part of the upper lapping plate 4 and the lower lapping plate 5 is a lapping surface, brazing filler metal is placed at the lapping surface, and the lapping length can be adjusted in real time according to requirements. The method for adjusting the lapping length is shown in a plan view of the lower base in fig. 3, a sliding pin groove 7 and a positioning pin hole 8 are both arranged in a groove 10 of the lower base 1, the four positioning pin grooves 8 fix the lower lapping plate 5 through positioning pins 6, the positioning pins 6 are shown in fig. 6, the shaft ends of the lower half part are all inserted into the positioning pin holes 8, so that the upper half square plate is attached to the lower lapping plate 5, and the thickness of the square plate is consistent with that of the upper lapping plate 4. Four sliding pin grooves 7 fix a position upper lapping plate 4 through sliding pin 3, because sliding pin groove 7 designs has certain length, adjusting upper lapping plate 4 and lower lapping plate 5's overlap joint length through sliding pin 3 back-and-forth movement in sliding pin groove 7, sliding pin 3 is as shown in figure 5, the lower extreme stub end is whole to be inserted sliding pin groove, upper end stub end length is less than lapping plate thickness 2mm, middle square lapping plate thickness is lapping plate 5's thickness 2mm down, the length of a side is lapping plate's width 20mm, can play the supporting role to upper lapping plate one end, prevent that the lapping plate warp in the overlap joint process.

For the lapping process with the lapping plate, as shown in fig. 2, two grooves 10 are formed on the upper surface of the lower base 1 for placing the lapping plate, the depth of the grooves 10 is slightly smaller than the thickness of the two lapping plates by about 3mm, and the width of the grooves 10 is slightly larger than the width of the lapping plates by about 20.2 mm. The upper cover plate 2 is in surface contact with the upper lap plate 4 and the upper half square plate of the positioning pin 6. And the length and width dimensions of the upper cover plate 2 are consistent with those of the lower base plate 1.

As shown in fig. 1, four lower straps 5 are respectively disposed at corresponding positions at both ends of the groove 10, and both ends of the upper strap 4 are respectively supported by the lower straps 5 and the sliding pin 3, ensuring that the strap surfaces are kept parallel.

The present invention is described by way of example, and not by way of limitation, as the present description is deemed to be the most widely varied and consistent with the principles and features disclosed herein.