CN103138498B - Parallel type automatic quantity production method used for producing voice coil motor - Google Patents

Abstract

The invention discloses a parallel automatic mass production method for producing voice coil motors. A single material is placed on a turntable in the form of typesetting. Bonded together by glue, the wire ends wound on the lens mount are welded together with the spring leaf. Compared with the traditional manual flow production line, the present invention can greatly improve the production efficiency, greatly reduce the labor cost, and ensure the quality stability on the basis that the investment amount does not need to be greatly increased. Compared with the existing assembly line automatic production line, the invention has less technological investment and strong adaptability and flexibility. For different designs, it can be put into production immediately only by slightly modifying the jig and glue dispensing program. In addition, the process has the potential to double production speed. The novel soldering procedure included in the technology of the present invention greatly simplifies the soldering operation, without manual adjustment of the position of the wire head, making it possible to fully automate the soldering.

Description

A parallel automated mass production method for producing voice coil motors

technical field

The present invention discloses an automated production process, in particular a parallel automated mass production method for producing voice coil motors.

Background technique

With the widespread popularity of smartphones around the world, and the application of high-resolution camera modules in smartphones is becoming more and more important, the key device in mobile phone camera modules - the voice coil motor - is becoming a Hot mobile phone parts products. Various voice coil motor manufacturers are expanding their production capacity to meet the rapidly growing market demand.

Since the voice coil motor is a product with a relatively complex structure, the traditional production process of the voice coil motor is based on the manual assembly line. Each production line generally needs about 40 people to achieve a monthly output of about 150K (that is, 150,000). Not enough. Therefore, if a voice coil motor manufacturer wants to be able to supply mobile phone camera module manufacturers normally, traditional voice coil motor manufacturers need to be equipped with more than 10 manual assembly lines and employ hundreds to thousands of assembly line operators. It brings great challenges to the management of the factory. At the same time, in the context of the rapid increase in labor costs today, the operating costs of the factory have also risen sharply. In addition, due to the high mobility of personnel, it will also lead to unstable product quality, which is a fatal threat in the industry. Therefore, how to improve the degree of automation of the production line and reduce the number of operators has become an important issue in the current industry.

At present, several well-known voice coil motor manufacturers in the world, such as ALPS, TDK, etc., have taken a step ahead in the automated production process and developed a fully automated production process based on the concept of assembly line. The motor products are also produced one by one like a manual assembly line. Outflow, the use of machines and automatic transmission systems basically completely replaced the manual. This production line can reach a production speed of about 15 products per minute. Compared with the traditional manual line, the monthly output is increased by at least 3 times, the number of personnel is reduced by 10 times, and the production efficiency is greatly improved. However, this kind of assembly line requires a huge investment, and its adaptability and flexibility to product design changes is worse than that of manual lines. Once the product design changes, the automatic production line needs to make major adjustments, which is time-consuming and costly.

Contents of the invention

Aiming at the above-mentioned prior art, the present invention proposes a new parallel automation process. The basic concept is completely different from the single outflow of products in the above-mentioned automated assembly line. Instead, it uses regular matrix layouts such as 5X5 and 10X10 to complete the layout at the same time. Make multiple products. The basic equipment of the production line is X-Y-Z three-axis precision dispensing machine and soldering machine, plus a number of typesetting production fixtures and turntables. The fixed investment of the entire production line is low and the adaptability is strong. Taking 10x10 typesetting as an example, even a single point of glue and solder can complete a full version of 100 products within 7 minutes, achieving a production speed of about 15 per minute, reaching the efficiency of a flow-type automation line. If further development of multi-point simultaneous dispensing and welding, the production efficiency will be doubled, and will greatly exceed the efficiency of the existing automated assembly line. At the same time, this automated process also includes a new type of soldering process and a matching structural design, which makes the most difficult soldering process in the traditional process simple and easy to automate.

The technical solution adopted by the present invention to solve the technical problem is: a parallel automatic mass production structure for the production of voice coil motors. The individual materials in the turntable are arranged correspondingly, and the materials are bonded together by glue, and the wire ends wound on the lens holder are welded together with the spring pieces.

A parallel automatic mass production method for producing voice coil motors, the method includes the following steps:

(1) Arrangement of incoming materials: place a single material in the turntable in the form of typesetting;

(2) Glue dispensing: use the glue dispenser to point the resin glue on the typesetting material according to the designed glue dispensing position;

(3) Assembling: Then fasten another version of the material that needs to be glued to the material that has been glued together with the material that has been glued, and put the buckled two versions of the material together with the turntable into the oven for drying Bake, the baked parts will be firmly bonded together in the form of a whole page;

(4) Soldering tin: There is a wire wound on the lens mount, and the above-mentioned coiled lens mount is put into the production jig in the form of typesetting, and the full-page spring piece is welded together with the joint of the wire on the lens mount;

(5) Quality inspection: use the mobile platform to drive the camera to take pictures of each part and semi-finished product in turn, compare them with the existing standard pictures, determine the degree of size deviation of the outgoing material or semi-finished product through the computer, and judge whether it is qualified;

(6) Dismantling of the product: All spring leaf connections must be disassembled and removed before being assembled into a finished product.

The technical solution adopted by the present invention to solve its technical problems further includes:

Positioning guide posts are fixed on the turntable.

The lens holder is provided with a wire groove, and the wire ends wound on the lens holder are stuck into the wire groove.

Positioning guide posts are arranged on the turntable.

When soldering in the above step (4), there is a wire slot in the injection molded part of the lens holder. When the automatic winding machine winds the wire on the lens holder, snap the wire end into the wire at the beginning and end of the winding slot, and break the wire along the end face of the lens holder, then place the full-page spring piece on the lens holder, and weld the full-page spring piece and the joint of the wire on the lens holder together.

The spring sheet is pre-designed with a small hole, which corresponds to the position of the wire slot on the lens holder, and then uses an automatic dispensing machine to spot solder paste on each small hole, and carry out each solder paste point. Heat and melt to complete the welding of the wire end and the spring piece.

The step (6) also includes step (5') defective product processing: through step (5) automatic detection to determine whether there is a position deviation in the product layout, if the position deviation is found, use the computer to temporarily fine-tune the dispensing position to solve the above deviation.

When soldering in the step (4), place the full-page product on an automatic soldering machine, or use laser heating, or use hot air heating, soldering iron tip heating and other different methods.

The beneficial effects of the present invention are: compared with the traditional manual flow production line, the present invention can achieve a substantial increase in production efficiency, a substantial reduction in labor costs, and more guaranteed quality stability on the basis of no need for a substantial increase in investment. Compared with the existing assembly line automatic production line, the invention has less technological investment and strong adaptability and flexibility. For different designs, it can be put into production immediately only by slightly modifying the jig and glue dispensing program. In addition, the process has the potential to double production speed. The novel soldering procedure included in the process of the present invention greatly simplifies the soldering operation, without manual adjustment of the position of the wire head, making it possible to fully automate the soldering.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the leaf spring in the present invention.

Fig. 2 is a schematic diagram of the structure of the metal gasket in the present invention.

Fig. 3 is a schematic diagram of the decomposition state of the mass production structure of the present invention.

Fig. 4 is a schematic diagram of dispensing and assembly structure of the present invention.

Fig. 5 is a schematic diagram of the mass production structure of the present invention in a decomposed state.

Fig. 6 is a schematic diagram of the structure at the small hole of the present invention.

Fig. 7 is a schematic diagram of the structure after the solder paste is coated on the small hole of the present invention.

In the figure, 1-pressure plate, 2-injection molded parts, 3-piece spring, 4-metal spacer, 5-stretch yoke, 6-lens holder, 7-turnaround disc, 9-positioning guide post, 10-small Hole, 11-wire head, 12-solder paste.

Detailed ways

This embodiment is a preferred implementation mode of the present invention, and other principles and basic structures that are the same or similar to this embodiment are within the protection scope of the present invention.

A parallel automatic mass production structure for the production of voice coil motors. The structure is that a single material is placed on the turntable in the form of typesetting. Bonded together by glue, the wire ends wound on the lens holder are welded together with the spring pieces, the positioning guide posts are fixed on the turntable, the wire slots are arranged in the lens holder, and the wire ends wound on the lens holder are clamped. Put into the wire slot.

The core concept of the present invention is to process multiple parts and semi-finished products simultaneously by means of matrix typesetting, and use the mutual cooperation between jigs to complete the assembly of semi-finished products. The basic equipment used in the production line is X-Y-Z three-axis precision dispensing machine and soldering machine, plus a number of typesetting production fixtures and turntables7. The parallel automatic mass production method for producing voice coil motors in the present invention comprises the following steps:

1. Matrix layout of incoming materials:

The materials used in the voice coil motor in the present invention generally include the following two types:

a. Materials that are already in the form of typesetting, such as leaf springs 3 and metal gaskets 4 processed by chemical etching, please refer to attached drawings 1 and 2. Plastic gaskets formed by stamping with molds can also be in the form of typesetting It is directly punched out to form a matrix layout material.

b. Individually produced materials, such as injection molded parts 2 (that is, sheet-shaped plastic gaskets), lens mounts 6, metal stretched yokes 5, etc. In the present invention, even if it is a single produced material, it is usually placed in the turntable 7 by the supplier in the form of typesetting and handed over to the motor manufacturer. The turntable 7 is similar in structure, please refer to accompanying drawing 3, and its layout mode is identical with the mode that has been the material of typesetting form.

In the present invention, almost all materials are shipped to the motor manufacturer in the form of typesetting, but only in the shipping process. In traditional motor production, typesetting incoming materials will be disassembled into individual parts first, and after passing the quality inspection of incoming materials, they will be put into the assembly line for the production of individual motors. However, in the process of the present invention, the layout mode of the incoming materials is carefully designed, and the layout direction and distance of the parts are closely matched with the layout production fixture. Therefore, after the layout-type incoming materials pass the quality inspection of the incoming materials, the whole-page incoming materials can be imported into the layout-type production jig at one time, and even the hard turntable 7 loaded with the incoming materials can be used as a production jig and directly put into the production line machine for processing. Automated dispensing process.

2. Automatic dispensing and full-page assembly

In this embodiment, the X-Y-Z precision three-axis automatic dispensing machine is used to place the resin glue on the typesetting material parts according to the designed dispensing position, and then buckle the other version of the material that needs to be bonded with it. . In this embodiment, the positioning guide post 9 on the jig (that is, the turntable 7 ) can ensure that all parts can be accurately aligned, please refer to the accompanying drawing 4 . The buckled two-plate material parts and fixtures are put into the oven for baking together, and the baked parts will be firmly bonded together in the form of a full plate. By repeating the above operations, each component can be assembled into a complete finished product.

3. Automatic soldering

In order to avoid manually adjusting the line position, in this embodiment, it is first necessary to introduce a line slot into the injection molded part of the lens holder 6 . When the automatic winding machine winds the wire on the lens mount 6, the wire end 11 can be snapped into the wire slot at the beginning and end of the winding, and the wire can be broken along the end face of the lens mount 6, as shown in Figure 6 . In this way, the position of the thread head 11 is fixed in the wire groove, and the thread head 11 will not grow much outside the end face of the lens holder 6, which lays a solid foundation for further automated soldering.

In this embodiment, in this welding process, first put the above-mentioned coiled lens holder 6 parts into the production jig in the form of typesetting, the thread head 11 of the coil is arranged at the linear groove, and then the full-page spring sheet is placed on the On the lens holder 6, the precise alignment of all components is realized through the positioning column on the jig. In this embodiment, a small hole 10 is pre-designed on the spring piece, and the small hole 10 corresponds to the position of the wire slot. Then use an automatic dispensing machine to dispense solder paste 12 on each small hole 10. Due to the fluidity of the solder paste 12, a part will sink slightly in the small hole 10 and contact the wire end 11 in the wire slot. Please See accompanying drawing 7. Then place the full-page product on an automatic soldering machine, heat and melt each solder paste at 12 points, and complete the welding of the thread head 11 and the spring piece. During specific implementation, different methods such as laser heating, hot air heating, and soldering iron tip heating can also be used for welding.

4. Use the camera system to realize automatic quality inspection of incoming materials and process quality inspection

In this embodiment, the quality inspection is to use a camera to cooperate with the X-Y-Z three-axis moving platform to realize the automatic quality inspection of the full-page incoming materials and semi-finished products. In this embodiment, the camera takes pictures of each part and semi-finished product at a time, compares them with existing standard pictures, determines the degree of size deviation of the outgoing material or semi-finished product through the computer, and judges whether it is qualified. If the degree of deviation of the existing standard picture is within the acceptable range, it is judged as a qualified product. If the degree of deviation between the photographed picture of the part and semi-finished product and the existing standard picture exceeds the acceptable range, it is judged as unqualified Taste.

5. Automatic misalignment processing:

In this embodiment, through the above-mentioned automatic detection, it can be determined whether there is a position deviation in the product layout. If a position deviation is found, the computer can use the X-Y-Z three-axis moving platform to temporarily fine-tune the dispensing position to tolerate the above deviation, so as to improve the yield rate of the automated process.

6. Disassembly process:

In the present invention, after the full-page parts are assembled into semi-finished products, there is still a spring leaf connection between each semi-finished product. Therefore, all leaf spring connections must be disassembled and removed before final assembly.

In this embodiment, the following two methods can be used:

a. Prepare half-etched lines in advance at the position where the spring piece needs to be broken, and finally use a stamping fixture or mechanical vibration to break all the half-etched lines at one time.

b. Use a laser cutting machine to cut off all the positions that need to be cut. The entire cutting process is controlled by a computer and carried out according to the design drawing.

Compared with the traditional manual flow production line, the present invention can achieve a substantial increase in production efficiency, a substantial reduction in labor costs, and a more assured quality stability on the basis of no need for a substantial increase in investment. Compared with the existing assembly line automatic production line, the invention has less technological investment and strong adaptability and flexibility. For different designs, it can be put into production immediately only by slightly modifying the jig and glue dispensing program. In addition, the process has the potential to double production speed. The novel soldering procedure included in the process of the present invention greatly simplifies the soldering operation, without manual adjustment of the position of the thread head 11, making the full automation of soldering possible.

Claims (6)

1. for the production of a parallel type automatic automation quantity production method for voice coil motor, it is characterized in that: described method comprises the steps:

(1), supplied materials cloth version: single material is placed in Revolving disc with the form of typesetting;

(2), put glue: utilize point gum machine by resin glue according to design some glue location point above typesetting formula material;

(3), assemble: then by need with put glue after bonding another publication material of material and material after putting glue snap together, the two publication material fastened are dropped into oven cooking cycle together with Revolving disc, and the parts after baking are by with the form strong bond of justifying together;

(4), scolding tin: be wound with wire on lens mount, the above-mentioned lens mount winding coil is inserted in production tool, by the spring leaf of justifying together with the weld of lens mount upper conductor with typesetting form;

(5), quality inspection: utilize mobile platform to drive camera each component and semi-finished product to be taken pictures successively, compare with existing normal pictures, determine supplied materials or half-finished dimensional discrepancy degree by computer, judge that whether it is qualified;

(6), product is disassembled: all spring leafs must be connected before dressing up finished product and disassemble removal.

2. the parallel type automatic automation quantity production method for the production of voice coil motor according to claim 1, is characterized in that: be provided with positioning guide column above described Revolving disc.

3. the parallel type automatic automation quantity production method for the production of voice coil motor according to claim 1, it is characterized in that: in described step (4) during scolding tin, trunking is provided with in the moulding of lens mount, when automatic coil winding machine is on lens mount during coiling, start with ending phase, the end of a thread to be snapped in trunking in coiling, and along lens mount end face, line is fractureed, then the spring leaf of justifying is placed on above lens mount, by the spring leaf of justifying together with the weld of lens mount upper conductor.

4. the parallel type automatic automation quantity production method for the production of voice coil motor according to claim 3, it is characterized in that: described spring leaf is designed with aperture in advance, aperture is corresponding with the position of the trunking on lens mount, then automatic dispensing machine is utilized by tin cream point on each aperture, heating and melting is carried out to each tin cream point, completes welding of the end of a thread and spring leaf.

5. the parallel type automatic automation quantity production method for the production of voice coil motor as claimed in any of claims 1 to 4, it is characterized in that: described step (6) is front also comprises step (5 ') defective products process: whether have position deviation by step (5) Aulomatizeted Detect determination product cloth version, if discovery position deviation, finely tune a glue position by computer temporarily and solve above-mentioned deviation.

6. the parallel type automatic automation quantity production method for the production of voice coil motor as claimed in any of claims 1 to 4, it is characterized in that: in described step (4) during scolding tin, justifying product is placed on automatic tin welding machine, or employing LASER HEATING, or employing Hot-blast Heating, or the mode of solder tip heating.