阅读说明：本技术 空心封块生产工艺 (Production process of hollow sealing block ) 是由 宋洪刚 宋全 于 2021-09-16 设计创作，主要内容包括：本发明为空心封块生产工艺,经过下料、落料和成型三步,原料采用铝合金板材,将铝合金板材冲压成落料料坯,经过冲压成型模具形成工件成品,即得本发明空心封块。本发明采用冲压成型,封块整体为空心结构,节省材料,其重量相对于现有封块减重60～70%；另外本发明工艺简单,尺寸精准,无需校直和切断等二次加工,工序简洁,成型后可直接使用。(The invention relates to a production process of a hollow sealing block, which comprises the steps of blanking, blanking and forming, wherein an aluminum alloy plate is adopted as a raw material, the aluminum alloy plate is punched into a blanking blank, and a workpiece finished product is formed through a punch forming die, so that the hollow sealing block is obtained. The invention adopts punch forming, the whole sealing block is of a hollow structure, the material is saved, and the weight of the sealing block is reduced by 60-70% compared with the weight of the traditional sealing block; in addition, the invention has simple process, accurate size, no need of secondary processing such as straightening, cutting and the like, simple working procedures and direct use after molding.)

1. The production process of the hollow sealing block is characterized in that the hollow sealing block is made of aluminum composite plates, and the production process comprises the following steps:

step 1, blanking, namely shearing raw materials into rectangular strips, wherein the width of each strip is larger than the unfolded blanking length of a single workpiece;

step 2, blanking, namely stamping the strip material in the step 1 into a plurality of blanking blanks on a blanking die by using a punch;

and 3, molding, namely respectively molding each blanking blank into a workpiece by using a stamping molding die.

2. The process for producing a hollow seal block as claimed in claim 1, wherein the blank is required to meet the requirements of geometric size, shape and position of the product.

3. The production process of the hollow seal block as claimed in claim 1, wherein a limit point for preventing the blank from shifting is designed on the plane of the forming die.

4. The process for producing a hollow sealing block according to claim 3, wherein the molding material blank has a symmetrical configuration, and the molded workpiece includes a concave configuration provided at a middle position, planar side edges provided on front and rear sides of the concave configuration, and vertical side edges provided on left and right sides of the concave configuration.

5. The process for producing a hollow block seal of claim 4 wherein the height of the vertical side is higher than the height of the flat side.

6. The production process of the hollow seal block as claimed in claim 1, wherein the length a of the blanking blank is determined according to the length dimension d of the workpiece, and the width b is determined according to the width dimension e of the workpiece.

7. The hollow seal punch production process of claim 6 wherein the length dimension d and the width dimension e of the formed workpiece replace the length dimension d 'and the width dimension e' of the various shaped seals of the existing extrusion process.

Technical Field

The invention relates to the field of manufacturing of parts of plate-fin heat exchangers, in particular to a production process of a hollow sealing block.

Background

The core body structure of the existing plate-fin heat exchanger is provided with a plurality of wind side channels flowing back and forth from top to bottom, each wind side channel consists of a heat dissipation belt (a heat dissipation fin), a cooling medium channel is arranged between every two adjacent wind side channels, and the two ends of each heat dissipation belt are respectively provided with a sealing block for supporting and welding for sealing.

As shown in fig. 5 and other shapes of the seal block of the extrusion process, the raw material is an aluminum alloy bar, and the quality is unstable due to the influence of factors such as pressure, temperature and the like in the extrusion forming process; the sealing block is solid construction, and its arch is arranged along sealing block length direction, and bellied length equals sealing block length, and after extrusion, need carry out the alignment when using and cut off with the scale, need secondary operation, and it is troublesome hard to take trouble, and the process is loaded down with trivial details.

Disclosure of Invention

In order to solve the technical problems, the invention provides a production process of a hollow sealing block, which adopts the technical scheme that:

the hollow sealing block is made of aluminum composite material, and the production process comprises the following steps:

step 1, blanking, namely shearing raw materials into rectangular strips, wherein the width of each strip is larger than the unfolded blanking length of a single workpiece;

step 2, blanking, namely stamping the strip material in the step 1 into a plurality of blanking blanks on a blanking die by using a punch;

and 3, molding, namely respectively punching each blanking blank into a molded workpiece by utilizing a punch forming die.

Furthermore, the blanking blank needs to meet the requirements of the geometric size, shape and position of the product.

Furthermore, a limiting point for preventing the blanking blank from deviating is designed on the plane of the forming die.

Furthermore, the molding material blank is of a symmetrical structure and comprises a concave structure arranged in the middle, plane side edges arranged on the front side and the rear side of the concave structure and vertical edges arranged on the left side and the right side of the concave structure.

Further, the height of the vertical side is higher than the height of the plane side.

Further, the length a of the blanking blank is determined according to the length dimension d of the workpiece, and the width b is determined according to the width dimension e of the workpiece.

Further, the length dimension d and the width dimension e of the formed workpiece replace the length dimension d 'and the width dimension e' of the sealing blocks in various shapes in the existing extrusion process.

The invention has the beneficial effects that: the invention relates to a production process of a hollow sealing block, which comprises the steps of blanking, blanking and forming, wherein an aluminum alloy plate is adopted as a raw material, the aluminum alloy plate is punched into a blanking blank, and a workpiece finished product is formed through a punch forming die, so that the hollow sealing block is obtained. The invention adopts punch forming, the whole sealing block is of a hollow structure, the material is saved, and the weight of the sealing block is reduced by 60-70% compared with the weight of the traditional sealing block; in addition, the invention has simple process, accurate size, no need of secondary processing such as straightening, cutting and the like, simple working procedures and direct use after molding.

Drawings

FIG. 1 is a flow chart of the present invention;

FIG. 2 is a schematic structural view of an aluminum composite material;

FIG. 3 is a schematic view of the structure of the invention after blanking;

FIG. 4 is a schematic structural view of the present invention;

FIG. 5 is a schematic diagram of a conventional seal block structure;

FIG. 6 is a top view of a blanking lower stamping die;

FIG. 7 is a top view of the lower forming die;

as shown in the figure, 1 aluminum alloy plate, 2 blanking blanks, 3 forming workpieces, 4 sides, 5 protrusions, 6 lower forming dies, 7 limiting points, 8 forming areas, 9 blanking lower stamping dies, 10 blanking areas, 11 stop blocks, a blanking blank length, b blanking blank width, c vertical edges, d sealing block length and e sealing block width.

Detailed Description

As shown in the figure, the invention relates to a production process of a hollow sealing block, the raw material of the hollow sealing block is an aluminum alloy plate 1, and the production process comprises the following steps:

step 1, blanking, namely shearing a raw material (an aluminum alloy plate) into a rectangular strip material, wherein the width of the strip material is larger than the unfolded blanking length of a single workpiece;

step 2, blanking, namely, installing a blanking lower stamping die 9 on a punching machine, and stamping the strip material in the step 1 into a plurality of blanking blanks 2 on the blanking die;

the cut rectangular strip is placed on the upper surface of a blanking lower stamping die 9, the upper surface of the die is provided with a blanking area 10, the blanking area is provided with a geometric dimension and a size, a blanking blank length, b blanking blank width and c vertical edge in advance according to requirements, the blanking area is determined according to the length dimension d (seal block length) of a workpiece, and the width b is determined according to the width dimension e (seal block width) of the workpiece. The upper surface of the die is also provided with a stop block 11, and the stop block is arranged at the position of one side scrap edge of the blanking area to play a limiting role. When the strip material is placed on the blanking lower stamping die, one side of the strip material is pushed forwards along the stop block, and the single blanking blank falls into the blanking area to push the strip material in sequence to finish blanking.

And 3, molding, namely respectively punching each blanking blank into a molded workpiece 3 by utilizing a punch forming die. Using a punch forming die 6 and an upper forming die; the upper surface of the lower forming die is provided with a forming area 8 which is rectangular, the length of the forming area is the length dimension d of a workpiece, the width of the forming area is the width dimension e of the workpiece, and limiting points 7 on the periphery of a blanking blank are all in contact with the side edge of the blanking blank. A single blank is placed in the forming zone and the stamping die is operated to stamp the blank into a formed part to produce the finished product shown in figure 4, the length dimension d 'and width dimension e' of the seal block in figure 5 (side 4 and protrusion 5) being replaced by d and e in figure 4.

The forming workpiece comprises a concave structure arranged in the middle of the forming workpiece, wherein the concave structure is hollow, and plane side edges arranged on the front side and the rear side of the concave structure and vertical side edges c arranged on the left side and the right side of the concave structure are arranged. The formed workpiece can be directly used without secondary processing. The formed workpiece is a hollow sealing block, the concave part is hollow, and compared with the existing sealing block (shown in figure 5), the hollow sealing block is simple in process and accurate in size, the weight of the material is reduced by 60-70%, and the production cost is reduced.

The invention is a production process of hollow seal blocks, and the production process comprises three steps of blanking, blanking and forming, wherein the raw material adopts an aluminum alloy plate, so that the process is simple, the size is accurate, and the quality is stable; and stamping the plate into a blank, and forming a workpiece finished product through a stamping forming die to obtain the hollow sealing block. The invention adopts punch forming, the whole sealing block is of a hollow structure, the material is saved, and the weight of the sealing block is reduced by 60-70% compared with the weight of the traditional sealing block; in addition, the invention has simple process, does not need secondary processing, has simple working procedures and can be directly used after molding.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.