WO2012075660A1

WO2012075660A1 - Automatic stacking and welding process method and apparatus for micro iron cores

Info

Publication number: WO2012075660A1
Application number: PCT/CN2011/000162
Authority: WO
Inventors: 钱晓晨; 骆兴顺
Original assignee: 苏州和林精密科技有限公司
Priority date: 2010-12-07
Filing date: 2011-01-30
Publication date: 2012-06-14

Abstract

An automatic stacking and welding process method for micro iron cores is disclosed. Resistance welding spots are prepunched on strips (4). Elements to be welded are punched from strips (4), and then the elements to be welded are pieced. The elements to be welded are stacked after being pieced. Several stacked elements to be welded are welded into a whole. An automatic stacking and welding process apparatus for micro iron cores is disclosed. The apparatus includes a punching device, a piecing device (6), a welding device (7), a measuring device (8), a product collection device (10) and a transportation platform (9). The transportation platform (9) is set below the piecing device (6), the welding device (7) and the product collection device (10). At least one stacking device (5) is set on the transportation platform (9). Products produced by this method and apparatus have high strength and accuracy.

Description

Miniature iron core automatic stacking welding process method and equipment

The invention relates to a micro iron core automatic stack welding process and equipment. Background technique

The problems to be solved by precision machining are: machining accuracy, including geometrical tolerance, dimensional accuracy and surface condition, sometimes with or without surface defects is also the core of this problem; Second, processing efficiency, some machining can achieve better machining accuracy, However, it is difficult to achieve high processing efficiency.

In the prior art, for components having a thickness outside the stamping range, two main manufacturing methods are now adopted:

(1) A plurality of sheet-like parts are punched out, and riveting points are punched on each of the sheet-like parts, which is realized by the method of lamination riveting, and the process also has its own defects, and the defects are mainly the following:

1 The riveting strength of the product is not enough and will be separated in the subsequent process;

2 The size of the product does not meet the requirements;

3 The product cannot be met after miniaturization.

(2) It is realized by the method of machining. The limitation of this processing method is relatively large, mainly for the following points:

1 processing size is unstable;

2 surface burrs are large;

3 processing speed is slow;

4 processing costs are expensive. Summary of the invention

In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a micro iron core automatic stacking welding process method and equipment with good processing strength and high precision.

In order to achieve the above object, the present invention provides a micro iron core automatic stack welding process, which comprises the following steps:

1) pre-punching the self-deduction point on the tape as the initial connection and resistance welding point;

2) stamping the unit to be welded on the strip;

3) punching the unit to be welded;

4) stacking the die to be welded after blanking; 'one

5) Weld a plurality of stacked units to be welded into one.

In order to achieve the above object, the present invention provides a micro iron core automatic stack welding process apparatus, including a stamping device, a punching device, a welding device, a detecting device, a product collecting device, and a punching device and a welding device disposed thereon. And a transportation platform below the product collection device, wherein the transportation platform is provided with at least one stacking device.

A further improvement of the present invention is that the transport platform is a table body that is rotatable along its axis and has a circular cross section, and the punching device, the welding device, the detecting device and the product collecting device are along the a circumferential direction of the transport platform, when the stacking device is rotated with the transport platform to the punching device, the welding device, the detecting device, and the product collecting device, the stacking device can be The punching device, the welding device, the detecting device and the product collecting device work together.

A further improvement of the present invention is that the punching device is disposed separately from the punching device, the stacking device, the welding device, the detecting device, and the product collecting device, and the punching device is connected with a device for collecting the formed A tape collecting device of the unit to be welded, the punching device being connected with a tape supply device for providing a formed unit to be welded. A further improvement of the present invention resides in that the tape supply device includes a bracket and a tape reel that is rotatably coupled to the bracket and that is wrapped by the tape.

A further improvement of the present invention resides in that it further includes a tape recovery device, and the tape recovery device is provided with a pulverizer for pulverizing the tape.

A further improvement of the invention resides in that the detection device comprises a height detection device.

A further improvement of the present invention is that the material of the stacking device is silicon nitride.

The invention has the beneficial effects that the present invention can solve the existing problems better by adopting the above technical solutions, and is a micro iron core automatic stacking welding process method with high strength, high processing precision and high efficiency.

DRAWINGS

1 is a front view of a micro iron core automatic stack welding process apparatus according to the present invention;

2 is a top plan view of a micro iron core automatic stack welding process device according to the present invention;

Figure 3 is a top view of a product produced in an embodiment of a miniature iron core automatic stack welding process apparatus of the present invention;

4 is a front view of a product produced in an embodiment of a micro iron core automatic stack welding process apparatus according to the present invention.

among them

1. Bracket; 2. Feeding reel; 3. Recycling wheel; 4. Material belt; 6. Punching device; 7. Welding device; 8. Testing device; 9. Transportation platform; 10. Product collection device. detailed description

The preferred embodiments of the present invention are described in detail below to make the advantages and features of the present invention more It is easy to be understood by those skilled in the art, so that the scope of protection of the present invention is more clearly and clearly defined.

The invention provides a micro iron core automatic stack welding process method, comprising the following steps:

2) stamping the unit to be welded on the strip;

3) punching the unit to be welded;

4) stacking the die to be welded after blanking;

5) Weld a plurality of stacked units to be welded into one.

Referring to Figure 1 and Figure 2, a miniature iron core automatic stack welding process equipment, including a stamping device (not shown) for manufacturing a unit to be welded and a solder joint by means of stamping on the strip 4 , molding the unit to be welded and the solder joint;

The punching device 6 is used for punching the stamped and formed unit to be separated, and separating the unit to be welded from the strip 4;

a stacking device, configured to stack the die-cut units to be welded, so that a solder joint is disposed between each adjacent two units to be soldered;

The welding device 7 is configured to weld a plurality of pieces to be welded which have been stacked and formed into a whole; and the detecting device 8 is configured to detect whether the product is qualified;

The product collection device 10 is configured to automatically collect the products located on the stacking device and separately arrange them according to the test results of the detecting device 8 according to the qualified products and the non-conforming products.

The transport platform 9 is a platform that is rotatable along its axis and has a circular cross section. The punching device 6, the welding device 7, the detecting device 8 and the product collecting device 10 are arranged along the circumference of the transport platform 9. When the stacking device is rotated with the transport platform to the punching device 6, the welding device 7, the detecting device 8, and the product collecting device 10, the stacking device can be combined with the punching device 6, the welding device 7, and the detecting device 8. Works in conjunction with the product collection device 10.

The working principle of the present invention is described in detail below in conjunction with a preferred embodiment of the present invention.

Referring to Figure 3 and Figure 4, in the present embodiment, the working principle of the present invention will be described in detail by taking a product formed by stacking six hollow units to be welded and welding them together.

The product comprises six hollow units to be welded, the cross-sectional shape and area of each unit to be welded in the vertical direction are exactly the same, and the inner edge of each cross-section of the unit to be welded is rectangular, and the outer edge is polygonal. Of course, in order to match the shape of the product, the cross-sectional shape and area of each unit to be welded may be different, as long as there is a plane to be welded between each adjacent two units to be welded, and there is a resistance solder joint in the plane to be welded. Welding can be carried out by the method of the present invention.

The unit to be welded is precisely stamped by a stamping device. During the stamping process, a downwardly perpendicular resistance solder joint is formed on the unit to be welded, and each product includes a first unit to be welded, which is stacked in order from bottom to top, a second to be welded unit, a third to be welded unit, a fourth to be welded unit, a fifth to be welded unit, and a sixth to be welded unit, because the first unit to be welded is located at the bottom of the product, and the resistance welding point is The lower extension, in order to prevent the welding of the product and the table due to the provision of the resistance solder joint on the first to-be-coupled unit, the first to-be-weld unit of each product is not stamped with the resistance solder joint during the stamping.

In the embodiment, the stamping device is provided with two stamping stations, the first stamping station punches the shape of the unit to be welded on the strip 4, and the second stamping station located at the station is performed on the unit to be welded. Stamping of the resistance solder joint, the second stamping does not stamp the first unit to be welded, that is, the second stamping station presses 5 times and stops once, and finally finishes the six products of the product on the same web 4 The welding units are stamped out. It is to be particularly mentioned that it is also possible to use two rolls 4, the first roll 4 is stamped with a resistance solder joint to be welded, and the second roll 4 is stamped with a unit to be welded without a resistance weld. The manner in which the resistance welds are formed does not limit the scope of protection of the present invention.

In this embodiment, the punching device is separated from the punching device 6, the stacking device, and the welding device 7, The stamping device is connected to a strip collecting device for collecting the formed unit to be welded, and the stamped strip 4 is collected by the strip collecting device for supply to the punching device 6.

In this embodiment, the punching device 6 is coupled to a tape supply device for providing a formed unit to be welded. The tape supply device comprises a bracket 1 and a tape reel 2 rotatably connected with the bracket 1 and wound by the material tape 4, and the tape reel 2 is provided with a separation tape separating each adjacent two layers of the tape 4, on the bracket 1 The recovery wheel 3 to which the separation belt is attached is also rotated.

Of course, the stamping device can be directly connected to the punching device 6, and the stamped unit to be welded is directly supplied to the punching device 6 to cut and cut, and the fully automatic production of the product is completed.

In the stacking step, the present embodiment uses a punching device 6 to die-cut the unit to be welded, and also uses a stacking device to receive and stack the unit to be welded. The punching device 6 is punched from directly above the strip 4, and the unit to be welded is vertically moved downward after being subjected to the punching force of the punching device 6, and the unit to be welded is dropped into the stacking device, because the unit to be welded in this embodiment The interior is hollow, so the corresponding stacking device in this embodiment is a stacking device that matches the shape of the inner edge of the unit to be welded, and the stacking device passes through the inside of the unit to be welded, and fixes the position of the unit to be welded.

It is important to mention that the stacking device is made of silicon nitride and is resistant to high temperatures, friction and easy processing.

After the same stacking device receives six punched units to be welded, the transport platform 9 rotates, and the stacking device is transferred to the welding device 7, and the welding device 7 applies current to the six cells to be welded, and the method of resistance welding is used. Weld six units to be welded together. Because the resistance solder joint of the unit to be soldered in the embodiment is formed by stamping, a pit having a shape matching the shape of the resistance solder joint is formed on the upper surface of the unit to be soldered corresponding to the resistance solder joint of the unit to be soldered. When a strong current passes, the resistance welding points of every two adjacent cells to be welded melt and flow to the gap between the cells to be welded and the tHJ pit, reinforcing the connection of each unit to be welded, and making two adjacent Contact surface of the unit to be welded to be welded Close combination; small deformation to the product, can form a product with high precision requirements.

After the welding process is completed, the transport platform 9 is rotated to rotate the stacking device below the detecting device 8. There are various types of detection, such as detection height, roughness, level, verticality, etc. In the present embodiment, the detecting device 8 is only the height detecting device 8, and only detects the height of the product. In order to realize other kinds of detection, different detection devices may be added, and the difference of the detection devices should not limit the scope of protection of the present invention.

After the inspection process is completed, the transport platform 9 is rotated to rotate the stacking device below the product collection device 10. The product collection device 10 includes a main discharge bracket (not shown) for separating the stacking device from the product, a secondary discharge bracket for pushing the product out of the transport platform 9, for loading Product product box (not shown). The main discharge bracket presses the stacking device, and the stacking device falls into the transport platform 9, at which time the stacking device is separated from the product. The auxiliary unloading bracket is pushed along the transport platform 9 to push the product out of the transport platform 9 and into the product receiving box, and automatically collect the products located on the stacking device 5, and more preferably, a plurality of product housing boxes can be set. According to the detection result of the detecting device 8, the product is placed separately according to the qualified product and the non-conforming product.

Also included is a tape recovery device, and the tape recovery device is provided with a pulverizer for pulverizing the tape 4. After punching by the punching device 6, the unit to be welded on the strip 4 is punched out from the strip 4, and the remaining strip 4 is pulverized by the pulverizer.

For use with the punching device 6, the welding device 7, the detecting device 8, and the product collecting device 10, four identical stacking devices are provided on the transport platform 9. When the first stacking device is moved to the product collection device 10, the second stacking device is located at the detecting device 8, the third stacking device is located at the welding device 7, and the fourth stacking device is located at the punching device 6. When the first round of processing is completed, the first stacking device moves to the punching device 6, the second stacking device moves to the product collecting device 10, and the third stacking device moves to the detecting device 8, the fourth The stacking device is located at the welding device 7, so that the reciprocating automatic completion of the fully automatic and efficient production of the product. The number of stacked devices should be greater than or equal to the distribution on the stack The number of devices around the device ensures that each station has a stacking device at any time corresponding to it, ensuring the working efficiency of each device.

It can be seen from the above embodiments that the present invention is a fully automated and efficient micro-core automatic stacking welding process and apparatus.

The above embodiments are merely illustrative of the technical concept and the features of the present invention, and are intended to be understood by those skilled in the art and are not intended to limit the scope of the present invention. Equivalent changes or modifications made are intended to be included within the scope of the invention.

Claims

O 2012/075660 权禾|j Request PCT/CN2011/000162

1. A micro iron core automatic stacking welding process method, comprising: the following steps: 1) pre-punching a self-deduction point on a material tape as an initial connection and a resistance welding point;

2) punching out the unit to be welded on the strip;

3) Punching the welding unit;

4) stacking the die to be welded after punching;

5) Weld a plurality of stacked units to be welded into one.

2. A miniature iron core automatic stacking welding process equipment, characterized in that: comprising a stamping device,

a punching device (6), a welding device (7), a detecting device (8), a product collecting device (10), and a punching device (6), a welding device (7), a product collecting device ( 10) Below the transport platform (9), the transport platform (9) is provided with at least one stacking device.

3. The micro iron core automatic stack welding process apparatus according to claim 2, wherein: the transport platform (9) is a base body rotatable along an axis thereof and having a circular cross section, The punching device (6), the welding device (7), the detecting device (8) and the product collecting device (10) are disposed along the circumferential direction of the transport platform (9), when the stacking device is When the transport platform is rotated to the punching device (6), the welding device (7), the detecting device, and the product collecting device (10), the stacking device can be combined with the punching device (6) , welding device (7), testing device (8) and product collecting device

(10) Work together.

4. The micro iron core automatic stack welding process apparatus according to claim 3, wherein: the punching device and the punching device (6), the stacking device, the welding device (7), and the detecting device ( 8), the product collecting device (10) is separated from each other, and the punching device is connected with a tape collecting device for collecting the formed unit to be welded, the punching 2012/075660 Claim PCT/CN2011/000162 The device (6) is connected to a tape supply device for providing a formed unit to be welded. The micro iron core automatic stack welding process apparatus according to claim 3, wherein: the tape supply device comprises a bracket (Π and the bracket U) rotatably connected, and the supply belt (4) is wound. Tape reel (2).

The micro iron core automatic stack welding process apparatus according to claim 3, further comprising: a tape recovery device, wherein said tape recovery device is provided with a pulverization for pulverizing the tape (4) machine.

The micro iron core automatic stack welding process apparatus according to claim 2, characterized in that: the detecting device (8) comprises a height detecting device (8).

The micro iron core automatic stack welding process apparatus according to claim 2, wherein: the material of the stacking device is silicon nitride.