KR101251043B1 - Tap plate manufacturing method and its apparutus - Google Patents

Abstract

PURPOSE: A base material integrated tab plate manufacturing method and an apparatus thereof are provided to facilitate more convenient maintenance and post-management by the simplification of the apparatus and to increase productivity. CONSTITUTION: A base material integrated tab plate manufacturing method is composed of the following steps. Burring work on an inner through hole of a beading unit and re-striking and burring work on the outside of the beading unit are performed(S6) after a second drawing step(S5). The final shape of a tap nut is formed through the process of piercing forming a through hole for the installation of a place on the periphery of the tap nut, notching, bending and blanking. The screw is processed on the inner circumference of the beading unit passing through a second tap nut shape completion stage(S8). [Reference numerals] (S1) First cutting step; (S2) Beading unit forming step; (S3) First drawing step; (S4) Piercing step; (S5) Second drawing step; (S6) First tap nut shape completion step; (S7) Second tap nut shape completion step; (S8) Tapping step;

Description

Substrate integrated tab plate manufacturing method and apparatus therefor {Tap plate manufacturing method and its apparutus}

The present invention relates to a method for manufacturing a base plate integrated tab plate and a device thereof, and more particularly, a tab having a screw thread therein in a press mold apparatus using upper and lower dies in a multi-stage drawing process without using a punch in a tab forming process. The present invention relates to a substrate-integrated tab plate manufacturing method and apparatus for forming a tab integrally.

In general, various coupling means are used for interconnecting connection parts to connect or connect different components, such as parts of automobiles, parts of various industrial machines, and home appliances, and in particular, specific parts subject to heavy loads or continuous impacts. The screw coupling method for coupling bolts and nuts is used a lot.

The present invention is provided with a tab nut having a female screw structure on one side of a variety of conventional coupling method, the other member to be coupled to the part having a tab coupling structure that is coupled in a way that the screw bolt is screwed on the other side member In addition, the present invention relates to a method of manufacturing a tab plate mainly used in the apparatus and the technical field to which the apparatus belongs.

The general form of the tab plate is a tab nut welded to one side member, the tab bolt coupled to the tab nut is welded to the other member, respectively, after the tab bolt is coupled to the tab nut, as well as a variety of industrial machinery that requires durability Widely used in construction materials, automobiles and general household appliances.

However, the conventional tab coupling method has many disadvantages in the process of pursuing cost reduction and differentiated product design, which reduces the size of the product and reduces the production cost and process of the product, despite the advantages of high load and impact resistance. This exposure has been made or attempted to develop various methods and devices to solve this problem.

In particular, in joining a plate-like member used for a thin cover or case, there are many cases in which there is no mounting space for the tap nut for joining, or it is difficult to secure a space for accommodating the tab nut during joining. Many restrictions were followed in shaping the design.

Therefore, as a method for solving the disadvantages of the plate provided with a tab coupling method applied to various conventional parts or devices, the present inventors invented Korean Patent Registration No. 10-893014 (name: manufacturing method of the tab plate) Through the method of forming the tab nut integrally with the base material, the production process of the product can be drastically shortened, thereby increasing the output and securing the competitiveness.

In addition, as another form for improving the conventional tab plate manufacturing method and apparatus, Korean Patent Registration No. 10-879188 (Nutless tapping plate and its manufacturing method) and Korean Utility Model Registration No. 20-443171 ( Tapless plate manufacturing apparatus of the nutless type), etc. have been introduced.

However, such a conventional tab plate and nutless tab plate manufacturing method and apparatus are configured to mold tabs of a required dimension by using a plurality of punches in the upper or lower die during the drawing process, which is the main process of forming the tab. However, such a configuration complicates and enlarges the configuration of the device, making it difficult for the producer to design and manufacture the device, and for the user, the investment cost to purchase and install the initial equipment is expensive, And it was difficult to apply easily to the product production process.

In addition, since the configuration of the device is complicated, it is difficult to maintain and follow-up after installation, and has many disadvantages in setting up the equipment.

The present invention has been made to solve the conventional problems as described above, the present invention can improve the manufacturing method of the tab nut-integrated tab plate to reduce the configuration and size of the device, maintenance and after-care through the simplification of the device It is an object of the present invention to provide a method and apparatus for manufacturing a base material-integrated tab plate which can be made more convenient and improve productivity.

In order to achieve the above object, a method of manufacturing a base material integrated tab plate according to the present invention is a method of manufacturing a base material integrated tab plate integrally formed with a tab nut to a plate supplied through an upper and a lower die, the edge of the plate initially supplied. Piercing to form a reference hole in the part, and the first cutting step (S1) for performing notching in a predetermined position for preparing the tab nut processing portion required for the tab nut molding; A beading part forming step (S2) of forming a tab nut shape by using a punch formed at one side of the upper and lower dies in the center of the tab nut processing part of the plate moved after the first cutting step; Tap nut by gradually increasing the thickness of the bead portion while reducing the diameter of the bead portion through one side of the upper and lower dies having a plurality of bushings having a diameter gradually reduced in diameter at the lower end of the bead portion formed in the bead portion forming step (S2). Primary drawing step (S3) to make a shape; Piercing step (S4) to form a through hole in the center of the bead portion is reduced in diameter to a predetermined size or less through the primary drawing step; Through the piercing step (S4) the diameter of the bead portion than the thickness of the plate while gradually reducing the diameter of the bead portion through one side of the upper and lower dies having a plurality of stages of the bushing is gradually reduced in diameter in the lower peripheral portion of the bead portion through-hole formed Second drawing step (S5) to increase the thickness; A first tap nut shape completion step (S6) of performing a burring and a burring process on the outside of the beading part and the burring process in the inner through hole of the beading part after the second drawing step (S5); A second tap nut shape completion step (S7) of completing a final tap nut shape through piercing processing for forming a mounting through hole around the completed tap nut shape and notching, bending, and blanking processing; The tapping step (S8) for processing the screw on the inner tap periphery of the tab nut through the completion step of the second tab nut is provided, thereby providing a method for manufacturing a base tab integral tab plate is integrally formed on the plate.

In addition, the base material integrated tab plate manufacturing apparatus according to the present invention for achieving the above object is a piercing, punching, drawing, list-writing, burring and notching, bending, blanking in a series of mold apparatus consisting of upper and lower dies A base material integral tab plate manufacturing apparatus for forming a tab plate, comprising: a beading part forming part for forming a beading part for forming a tab on a surface of a plate supplied by using a punch formed in one of the upper and lower dies; ; One side die of the upper and lower dies to maintain a flat cross section while the other side die is gradually reduced in its outer diameter while increasing the thickness of the bead outer peripheral edge of the plate formed in the bead portion forming part through a multi-step process A primary drawing processing portion having a bushing having a recessed portion whose inner diameter is gradually reduced so as to draw the beading portion in a tab nut shape; A piercing processing unit provided with a punch in one of the upper and lower dies to form a through hole having a predetermined size in the inner center of the tab nut shape formed through the primary drawing processing unit; One side die of the upper and lower dies has a flat cross section so that the outer periphery of the beading portion having a through hole formed in the inner central portion thereof through the piercing processing portion can be increased in thickness while gradually reducing its outer diameter. The other side die is provided with a bushing having a recess having a gradually reduced inner diameter, thereby completing the beading part in a tab nut shape.

As described above, the base material-integrated tab plate manufacturing method and apparatus according to the present invention simplify the overall configuration of the mold apparatus to facilitate the installation of the equipment, and to make the maintenance and after-care of the apparatus more convenient.

In addition, the present invention provides a useful effect to improve the workability as well as to improve the workability by the simplicity and speed of the drawing process which is the most important tab molding process in the manufacturing process of the tab plate.

In addition, the present invention facilitates the production and operation of the device through the simplification of the tab plate manufacturing apparatus, and provides a useful effect that can be widely used in various industries by reducing the manufacturing cost of the manufacturing apparatus.

1 is a manufacturing process of the tab plate according to the present invention,
2 and 3 are the main configuration of the upper and lower dies applied to the manufacturing method of the tab plate according to the present invention and the processing process diagram of the plate,
Figure 4 is a state diagram forming step of the tab nut is formed according to the manufacturing method of the tab plate according to the present invention,
Figure 5 is an excerpt of the drawing processing portion and the tab nut forming step of the tab nut is molded in the manufacturing apparatus of the tab plate according to the present invention,
6 is a completed state of the base material integral tab plate produced by the method according to the invention,
7 is a cross-sectional view taken along line AA of FIG. 6.

The method for manufacturing a base material integrated tab plate and the apparatus according to the present invention are performed by piercing, punching, drawing, list-writing, burring and notching, bending, and blanking sequentially in a series of mold devices each having a pair of upper and lower dies. The present invention relates to a manufacturing method and a manufacturing apparatus for integrally molding a tab nut to a plate base material.

In particular, the present invention constitutes a minimum punch on any one of the upper and lower dies only in the initial forming step, the beading section, the intermediate piercing step, the burring step, and is separate from the primary and secondary drawing steps. The present invention provides a method and an apparatus for manufacturing a base material-integrated tab plate through a tab nut forming process of increasing thickness while reducing the outer diameter of an initially formed bead by using a punch-free die.

Hereinafter, with reference to the accompanying drawings will be described in detail focusing on the features of the present invention with respect to the method and apparatus for manufacturing a base material integrated tab plate according to the present invention.

In addition, in the detailed description of the present invention, the configuration or operation process and the like which are typically provided in the progressive mold apparatus are the same or similar to those of the conventionally known technology, so that those skilled in the art will fully understand and implement the present invention through the specification of the present invention. Additional details will be omitted.

First, the manufacturing method of the base material integrated tab plate of this invention is demonstrated.

1 is an overall process diagram of a method for manufacturing a base material-integrated tab plate according to the present invention, Figure 2 is a cross-sectional view of the main process of forming a tab nut in the manufacturing apparatus according to the present invention and extracts the processing state of the plate is formed tab tab nut One floor plan.

That is, the present invention is to produce a tab plate continuously through a multi-stage molding process using a multi-stage press molding, that is, a progressive mold apparatus, the manufacturing method is first molded in the corner of the plate 10 provided as a base material Piercing to form a reference hole for fixing the plate in the process, and the first cutting step of performing notch processing in a predetermined position to provide a tab nut processing portion of a certain size to be variable for the expansion and contraction of the plate when forming the tab nut (S1); One side of the upper and lower dies in the center of the beading portion of the plate moved after the first cutting step, in the drawing attached to the present invention, a beading portion for forming a beading portion for forming a tab nut by using a punch installed on a lower die and lifting operation Molding step (S2) is made.

Next, the primary drawing step of gradually increasing the thickness of the beading portion while gradually reducing the outer diameter of the beading portion formed in the beading part forming step (S2) using a bushing formed with a groove having a constant size on the bottom of the upper die. (S3); A piercing step (S4) of forming a through hole by using a punch provided in one die at the center of the beading unit whose outer diameter is reduced to a predetermined size or less through the primary drawing step (S3); Through the piercing step (S4), the diameter of the bead portion is smaller than the thickness of the plate while gradually reducing the outer diameter of the bead portion through one side die each having a bushing having a plurality of stages, the diameter of which is gradually reduced in the lower end of the outer circumferential edge portion of the bead portion in which the through hole is formed. It is characterized in that it comprises a; secondary drawing step (S5) to further thicken.

In addition, after the primary drawing step (S3) and the secondary drawing step (S5) in the state that the outer diameter of the bead portion is reduced to a predetermined size or less, additional burring processing is performed in the inner through hole of the bead portion, the outside of the bead portion A first tap nut shape completion step (S6) of firstly forming a required tap nut shape by re-listing and burring processing; Piercing processing to form a through hole to which the fastening member is coupled to install the finished tap plate around the first completed tap nut shape at a specific location, and the final tap nut shape is cut and bent to the required size and the final shape. A secondary tap nut shape completion step (S7) in which notching, bending, and blanking processing are completed to complete the tap nut; And The tapping step (S8) for processing the female thread on the inner circumference of the beading section through the second tap nut shape completion step (S7); further comprises.

In particular, the first drawing step (S3) and the second drawing step (S5) in the above-described tab plate manufacturing method according to the present invention, the upper and lower dies for multi-stage drawing forming the bead portion in order to form a tab nut on the plate proceeds sequentially There is a tab nut shape while gradually reducing the outer diameter of the bead only by pressing the upper die which is provided on the bottom of the bead having the grooved portion of the outer circumferential edge of the bead without a separate punching device. It is configured to mold the tab nut shape using a punchless die to be made.

That is, in the primary drawing step S3, the outer diameter of the molded beading portion 12 is gradually reduced by a bushing having a recessed portion in which the inner diameter thereof gradually decreases at the bottom of the upper die 30, and the outer diameter gradually decreases. Although the height of the beading portion that is reduced and increased at the same time is composed of multiple stages, a process of increasing the thickness of the beading portion by the length increased by the bushing having the same inner depth is performed.

In addition, the secondary drawing step S5, which is performed after the piercing step S4, is similarly performed in the multi-stage drawing process by the plurality of upper and lower dies 30 and 20, similarly to the primary drawing step S3. However, the upper and lower dies 30 and 20 performing the drawing process are provided on the bottom surface of the upper die 30 in a state where no punch is provided, and thus additional drawing of the beading part by a bushing having grooves gradually decreasing in size to each other. As the process is performed, the thickness and shape of the tap nut required as the thickness of the bead portion is further increased is performed.

As described above, the tab-shaped bead portion 12 whose thickness is increased through the secondary drawing step S5 is in a state in which the inner diameter thereof is slightly smaller than the inner diameter of the target tab nut. In the completion step (S6) to perform the burring process to increase the inner diameter once again, by performing the list-writing process and the burring process of the deformed tab shape during the burring process to complete the tap nut shape primarily.

The first completed tap nut is pierced through the second tap nut shape completion step (S7) to form a through hole to which the fastening means is coupled so that the tab plate can be installed after forming the product, and the unnecessary parts are bent and bent. Notching, bending and blanking to cut out only the necessary parts are carried out continuously to complete the final tap plate.
Thus, after performing the secondary tap nut completion step (S7), the base material-integrated tab plate is completed by tapping processing the internal thread using a tapping device on the inner periphery of the final tap nut shape. The machining state of the tab plate according to some processes (S1 to S7) of the entire manufacturing process of the tab plate is shown in excerpt in FIG. 3, and in FIG. Is shown.

Of course, other additional processes not described in the above-described method for manufacturing a base plate integrated tab plate of the present invention may be additionally performed or added in the process of producing a product using a progressive mold.

On the other hand, it will be described below with reference to Figures 2, 5 to 7 with respect to the tab plate manufacturing apparatus used in the method for manufacturing a base plate integrated tab plate according to the present invention.

The base material integrated tab plate manufacturing apparatus according to the present invention is configured by integrally mounting a mold apparatus for performing a plurality of multi-stage processes in a single press, and the essential part of the mold apparatus is the upper die 30 and the lower die 20. The upper and lower dies 30 and 20 for each stage are provided with holders, blocks, and pedestals provided in a conventional mold apparatus, and are provided with piercing and punching, drawing, list writing, burring and notching, bending, and blanking apparatus. The progressive mold device is configured so that the tab nut is integrally formed on the plate which is continuously supplied while sequential machining is performed on the plate that is continuously supplied.
In addition to the additional configuration required for the other mold apparatus may be additionally provided, the detailed description of the configuration and operation relations provided in the conventional progressive mold apparatus is omitted, and the following mainly focus on the characteristic components of the present invention Explain that.
That is, the base material integrated tab plate manufacturing apparatus according to the present invention includes a bead portion forming unit 60 provided with a punch to form a tab nut on the plate initially supplied; While drawing the outer peripheral edge of the beading portion formed in the beading part forming part 60 through a plurality of upper and lower dies, the outer peripheral edge of the beading portion formed on the plate is gradually reduced in size to reduce the outer diameter of the beading portion. A primary drawing processing unit 70 for primarily making a tab nut shape through a thin drawing process; A piercing processing unit 80 for processing a hole by using the inner periphery center punch of the tab nut shape to some extent through the primary drawing process; Similar to the primary drawing processing portion 70 described above, the primary tab nut shape in which the hole is processed is a secondary that makes the final tap nut shape to be finally formed while further reducing the outer diameter of the bead portion through a die having a bushing having a reduced inner diameter. Characterized in that it comprises a drawing processing unit (90).
In more detail, the bead forming unit 60 is formed at the initial stage of the mold apparatus, and any one of the upper and lower dies 30 and 20, in the accompanying drawings (see FIG. 2), is described. The lower die 20 is provided with a punch P, and the corresponding upper die 30 has a bushing 32 having a recess 34 having a size to which the punch P can enter. It is installed to form a beading portion 12 having a predetermined size and height on the surface of the plate 10 supplied by the combination of the punch (P) and the bushing (32).
In addition, the primary drawing processing unit 70 is a place where the upper and lower dies 30 and 20 are formed in multiple stages to perform a drawing process for the beading portion formed on the plate, and among the upper and lower dies 30 and 20. One side die, that is, in the accompanying drawings, the lower die 20 is configured to maintain a flat cross-section of the upper surface, the beading portion 12 formed in the beading portion forming portion 60 on the opposite side upper die 30 Bushing 32 having a groove portion 34 gradually reduced to gradually reduce the outer diameter while pressing the outer peripheral edge of the) is provided to form the first beading portion 12 in the shape of a tab nut to be completed You will be drawing.
In the drawing process performed in the primary drawing processing unit 70, the groove portion 34 of the bushing 32 provided in the upper die 30 gradually decreases the inner diameter and presses the outer peripheral edge of the beading portion to thereby increase the diameter of the beading portion. Since the height of the bead portion is reduced by the groove portion 34 is gradually reduced as the inner diameter is gradually reduced, the extended length is provided to the thickness side to perform the process of increasing the thickness of the bead portion.
In addition, the piercing processing portion 80 is to form a through-hole having a predetermined size in the center of the tab nut-shaped bead portion formed through the primary drawing processing portion 70 described above, to process a hole in the center of the bead portion The piercing processing unit 80 is a bead in which the primary drawing is made while the punch (P) is installed on the lower die 20 side of the upper and lower dies 30 and 20 to be coupled with the upper die 30 having the bushing. A through hole is formed in the part.
In addition, the secondary drawing processing unit 90 passes through the piercing processing unit 80 and has a lower end having a flat cross section with an upper die 30 having a bushing at the lower edge of the outer periphery of the beading unit having a through hole formed at an inner center thereof. The second drawing process is performed while passing through the die 20 in multiple stages.
That is, the secondary drawing processing portion 90 is provided with a bushing having a smaller diameter of the recess than that provided in the primary drawing processing portion 70 so as to start smaller than the primary drawing processing portion 70 and have a smaller and smaller inner diameter. While reducing the outer diameter of the bead portion while completing the tap nut shape close to the final product is to increase the thickness of the bead portion.
Accordingly, the beading portion passing through the secondary drawing processing portion 90 is provided in the upper die 30 to induce an effect of extending the length of the outer peripheral lower end portion by the pressing of the bushing whose inner diameter is gradually reduced while the inner peripheral portion is reduced inward. Since the height of the beading portion is limited by the bushing provided in the upper die, the elongated length increases the thickness of the beading portion, thereby forming a tab nut shape having a thickness thicker than that of the plate.
In this way, a basic tap nut shape is formed while passing through the primary drawing processing unit 70, the piercing processing unit 80, and the secondary drawing processing unit 90, and the tab nut shape passing through the secondary drawing processing unit 90. The subsequent processing unit in the same mold apparatus comprises a burring processing portion, a wrist-listing portion, and a burring processing portion to have a garden by using an additional processing apparatus to which punches, drills, and reamers are attached by multiple stage upper and lower dies.
In addition, after tapping the shape of the tap nut through piercing and notching, bending and blanking to remove unnecessary parts in order to obtain the final tab plate to be formed, the internal thread is machined through the tapping part on the inner peripheral edge of the finished tap nut. .
Since the apparatus and the processing unit performed after the secondary drawing processing unit 90 will of course be implemented in a conventional progressive mold apparatus, a detailed description thereof will be omitted in the present invention.
As described above, the base material integrated tab plate manufacturing apparatus according to the present invention is a piercing part and a notching part used for forming a beading part and a piercing part for punching the beading part of the upper and lower dies of the mold apparatus. The lower die of the mold apparatus used for the main drawing process except for the back is configured such that its upper surface has a flat cross section, and the lower surface of the upper die is gradually reduced in its inner diameter, and its inner depth is provided with a bushing having a recess of the same shape. The primary and secondary drawing processing unit is composed of features.
As described above, the apparatus for manufacturing a tab plate according to the present invention performs the drawing of the bead portion initially formed at the size necessary for tab nut formation, while passing through the primary drawing portion and the secondary drawing portion, the outer diameter of the bead portion protruding to the upper surface of the plate. In order to increase the rigidity of the tap nut to be loaded with other products in the future, the thickness of the bead portion is formed to be thicker than the base plate.

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6 and 7 show an external appearance of the tab plate 50 provided with the tab nut 40 completed by the above-described base material-integrated tab plate manufacturing method and manufacturing apparatus, respectively.
As shown in FIGS. 6 and 7, the tab nut 40 protruding from the plate is formed to be significantly thicker than the thickness t 1 of the plate whose thickness t 2 is the base material, and particularly, the edge at which the tab nut 40 and the plate contact each other. The negative thickness t3 is also significantly thicker than the thickness t1 of the plate, and when used in combination with specific devices and components, it can not only improve the durability of the tap nut subjected to concentrated loads but also be able to sufficiently support external shocks. To improve the quality of the product.

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10 plate 12 bead
20: lower die 30: upper die
40: tap nut 50: tap plate
60: bead forming part 70: primary drawing processing part
80: piercing machining 90: secondary drawing machining
P: Punch

Claims (2)

In the method of manufacturing a base material integrated tab plate to form a tab nut integrally to the plate supplied through the upper and lower dies,
Piercing to form a reference hole in the corner portion of the initially supplied plate, and the first cutting step (S1) for performing notching in a predetermined position to prepare a tap nut processing portion required for tap nut processing;
A beading part forming step (S2) of forming a tab nut shape by using a punch formed at one side of the upper and lower dies in the center of the beading part of the plate moved after the first cutting step;
1 to form a tab nut shape by gradually increasing the thickness while gradually decreasing the diameter of the bead through one side die having a bushing having a diameter in which the lower portion of the outer circumferential edge of the bead is formed in the beading part forming step (S2). A secondary drawing step S3;
Piercing step (S4) to form a through hole in the center of the bead portion is reduced in diameter to a predetermined size or less through the primary drawing step;
The secondary drawing step of increasing the thickness than the thickness of the plate while gradually reducing the diameter of the bead portion through one side die having a bushing having a plurality of stages whose diameter gradually decreases in the outer circumferential lower end portion of the bead portion in which the through hole is formed through the piercing step (S4). (S5);
A first tap nut shape completion step (S6) of performing a burring and a burring process on the outside of the beading part and the burring process in the inner through hole of the beading part after the second drawing step (S5);
A second tap nut shape completion step (S7) of forming a final tap nut shape through piercing processing for forming a plate mounting through hole around the first completed tap nut, and notching, bending, and blanking processing;
And a tapping step (S8) of processing a screw on the inner circumference of the beading unit that has undergone the second tab nut shape completion step. In the base plate integrated tab plate manufacturing apparatus for forming a tab plate while piercing, punching, drawing, wrist-like, burring and notching, bending and blanking are sequentially performed in a series of mold devices consisting of upper and lower dies,
The base material-integrated tab plate manufacturing apparatus includes: a beading part forming part for forming a beading part on a surface of a plate supplied by using a punch formed in one of the upper and lower dies;
One side die of the upper and lower dies has a flat cross section while the other side die is gradually increased in thickness while gradually reducing the outer diameter while undergoing a multi-step process on the outer periphery of the beading portion formed in the beading portion forming portion. A primary drawing processing part having a bushing having a recessed portion having an inner diameter thereof reduced to draw the beading part in a tab nut shape;
A piercing processing unit provided with a punch in one of the upper and lower dies to form a through hole having a predetermined size in the inner center of the tab nut shape formed through the primary drawing processing unit;
One side die of the upper and lower dies maintains a flat cross section while allowing the outer periphery of the beading portion having a through hole formed in the inner center to increase thickness while gradually reducing the outer diameter through the multi-step process through the piercing processing portion. The die is provided with a bushing having a recess having a gradually reduced inner diameter to complete the beading portion in a tab nut shape; the base material integrated tab plate manufacturing apparatus, characterized in that consisting of.

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