KR920001580B1 - Dies - Google Patents

Abstract

punching a raw material with upper and lower dies; forming a thread part on the punched piece with a tapping die; bending the material into a shape of " "; shaping into a round tube of "O"; and cutting into the final products. The work is performed in an integrated process with sequential dies.

Description

Manufacturing method and mold of igniter holder for lighter

1 is a schematic diagram schematically showing the production method of the present invention.

2 is a process chart shown by the manufacturing method of the present invention.

3 is a perspective view continuously showing the state of the product produced by the manufacturing method of the present invention.

4 is a perspective view showing a finished product produced by the manufacturing method of the present invention.

5 and 6 are perspective views showing the tubes of the upper and lower molds respectively used in the manufacturing method of the present invention.

* Explanation of symbols for main parts of the drawings

3: upper mold 4: lower mold

6: cutting punch 7: tapping die

7: Uneven part 8,18: 1st bending die

9,19: 2nd bending die 9,18,19: Semicircular groove

10,10 ': Cutting edge 11,12: Guide ball

16: punch hole 20: cutting die

20: inclined end 20: curved surface

The present invention relates to a method of manufacturing an ignition holder which is essentially embedded in a lighter that is ignited by using an ignited stone (aka, litadol) rather than an electronic or piezoelectric ignition method, and a manufacturing mold used in the manufacturing method. will be.

Conventionally, a small metal pipe having an inner diameter slightly larger than the diameter of an ignition stone is cut to a predetermined length, a tapping process is performed on one inner circumference, and a finishing process is performed to produce an ignition holder or a metal having a predetermined thickness. The plate has been cut and rolled into a pipe shape to have a predetermined inner diameter, followed by a separate tapping process, followed by finishing to manufacture a ignition stone holder. The former method is a small metal due to manufacturing problems. As the price of pipe is relatively expensive and the process of cutting it to a predetermined length and separate tapping process are performed separately, productivity decreases and raises the manufacturing cost. The latter method can reduce the production cost more than the former. Production is made because pipe manufacturing process and tapping process are divided separately. There are disadvantages which have not fit with the limits of limitations exposed in the reduction of production cost mass production.

The present invention was devised to solve the problems of the prior art, and was researched and developed in view of the fact that it can be manufactured to have a processing effect such as tapping by a series of continuous manufacturing processes even by pure plastic processing. Has a purpose.

An object of the present invention is to manufacture a ignited holder that can be made more efficiently by performing all the manufacturing process from the material to the finished product in a series of continuous manufacturing process to improve the productivity and improve the manufacturing efficiency to greatly reduce the production cost To provide a method and a mold.

The present invention is cold working a ignition stone holder made of a metal in order to embody the above object, but a continuous series of fixed consisting of a cutting punch, tapping first bending, secondary bending and cutting completion process based on plastic processing The present invention provides a method configured to produce a finished product and a mold used in manufacturing.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1 is a schematic diagram showing the manufacturing method of the present invention, the apparatus is the upper and lower parts in which the raw material (1) wound on one side is installed in a conventional press machine with upper and lower pressurized suction rollers (2, 2 ') The step motion of the take-up rollers 2, 2 ', 5, 5' is continuously carried out between the molds 3, 4 and the joining take-up rollers 5, 5 'of the upper and lower parts. It can be plasticized at the next stop time. Here, the upper mold 3 is a cutting punch 6, as shown in FIGS. 1 and 5, a tapping die in which a plurality of uneven parts 7a are formed to be partially tapped. 7), cutting edges 10 and 10 'installed at both ends of the die 9 for bending the first end die 8 having a curved end, the semi-circular grooves 9a are formed and the secondary bending is made; A plurality of guide holes 11 are installed at regular intervals. As shown in FIGS. 1 and 6, the lower mold 4 has a punch hole 16 having a trapezoidal cross-sectional shape and first and second bending dies having semicircular grooves 18a and 19a, respectively. (18, 19) The inclined end portion 20a is formed at one side and the cutting die 20 having a curved surface 20b and a plurality of guide holes 12 are formed at regular intervals, but the upper mold 3 is cut. The punch 6, the first and second bending dies 8 and 9, and the cutting blades 10 and 10 'include the punch holes 16 of the lower mold 4, the first and second bending dies 18 and 19, and The cutting dies 20 are installed to face each other.

In the device used in the present invention, the conveying method of the material 1 shows a conveying method by a take-out roller (2,2 ') (5,5') for convenience, but the air feeding method or any other commonly used method. It does not matter even if the transfer method is adopted.

Next, the manufacturing method of the present invention will be described in detail with reference to FIGS. 1 to 4.

(I) to (III) of FIG. 2 show the raw material 1 wound as the first process between the upper and lower molds 3 and 4 by means of a take-out roller 2 and 2 '. The lower mold 4 is raised and the lower mold 4 is raised so that the cutting punch 6 of the upper mold 3 is positioned so that the lower mold 4 is inserted into the punch hole 16. Punching is carried out at a predetermined interval in (I) to form a punch hole 13 and a step of forming a material 1a of a suitable size having connecting portions 14 and 14 'at both ends.

(IV) to 2 (V) of FIG. 2 are stepping dies 7 and 12 of the upper mold (3) by the lowering of the upper mold (3) and the raising of the lower mold (4) as the second process. 4) shows a process of forming a partial thread 15 on the material 1a remaining after punching in the first process. At this time, the screw portion 15 has the same effect as the state after the tapping is made in the cutting method as the prior art is made in the third and fourth processes to be described later, the first and second bends are both ends.

(VI) to 2 (VIII) of FIG. 2 is a third process, which is the first bending of the upper and lower molds (3,4) by the lowering of the upper mold (3) and the raising of the lower mold (4). The first step of bending the tapped material 1b in the “U” shape in the second step between the dies 8 and 18 is shown.

(IX) to (XII) in FIG. 2 are the fourth step, and the second bending die of the upper and lower molds (3,4) is caused by the lowering of the upper mold (3) and the raising of the lower mold (4). (9, 19) shows a step of second bending the material (1c) first bent in the third step in the form of "O".

(XIII) of FIG. 2 to (XV) of FIG. 2 are the fifth processes, which are cutting edges 10 and 10 'of the upper mold 3 by the lowering of the upper mold 3 and the raising of the lower mold 4. The cutting dies 20 of the lower mold 4 pass therebetween, and the connecting portions 14 and 14 'remaining at both ends of the material 1d, which are secondarily bent in the fourth process, are cut and shown in FIG. The process of obtaining a finished product 100 of one form is shown.

At this time, the finished product 100, once the connection portion 14, 14 'is cut is to fall to the outside of the lower mold (4) riding the inclined end portion (20a). In addition, the waste material 1e that is cut and left is discharged to the outside by upper and lower take-out rollers 5 and 5 '.

Figure 3 shows the processing sequence of the material produced by the present inventors in order to be punched and left in the first process (1a) stepped material (1b) primary bent material (1c), secondary bending Shows the material (1d) and the waste material (1e) to be cut and left, respectively, where each material (1a, 1b, 1c, 1d) can be seen that consists of a pair of upper and lower molds (3,4 In order to prevent interference between materials to be processed in a series of continuous plastic processing due to its structure.

However, it is not necessarily limited to one pair configuration, and if designed according to the manufacturer's intention, it is possible to make a single material continuous configuration or three or four or more materials processing.

As described above, the inventors of the present invention are the first to fifth processes of the cutting punch, tapping, first and second bending, and cutting completion processes for all manufacturing processes from the wound material 1 to the finished product 100. Comprising of a series of continuous plastic processing process consisting of has an excellent effect, such as to improve the production efficiency compared to the conventional to improve the productivity and greatly reduce the production cost.

Claims (2)

The wound material (1) is positioned between the upper and lower molds (3, 4) by the take-out rollers (2, 2 '), and the cutting punch ( 6) is inserted into the punch hole 16 and punching is performed to form the punch hole 13 and the connecting portions 14 and 14 'to form the material 1a, and the upper and lower molds 3 and 4. The second step of forming the raw material 1b by forming the partial screw portion 15 on the raw material 1a with the tapping die 7 by the lowering and raising operation of the lower die and lowering the upper and lower molds 3 and 4. And a third process of first bending the material 1b with the primary bending dies 8 and 18 by an ascending operation to form the material 1c in the shape of “ㅁ”, and the upper and lower molds (3, The fourth step of forming the material 1d in a “o” shape by second bending the material 1c with the secondary bending dies 9 and 19 by the lowering and raising operation of 4); The cutting die 2 is disposed between the cutting blades 10 and 10 'by the lowering and raising operations of the molds 3 and 4. A process for producing a igniter holder for a lighter, characterized in that a fifth step of obtaining a finished product by cutting the connecting portion of the raw material (1d) while passing through 0) is performed in a batch process. The upper mold (3) and the lower mold (4) consists of a pair, the upper mold (3) is a cutting punch (6), a stepping die (7) having a plurality of uneven parts (7a), primary bending die (8) ) Secondary bending die 9 with semi-circular groove 9a formed therein, cutting blades 10 and 10 'installed at both ends and a plurality of guide holes 11, and the lower mold 4 has a punch hole. (16), first and second bending dies 18 and 19 having semi-circular grooves 18a and 19a formed therein, a cutting die 20 having a slanted end portion 20a and a curved surface 20b on one side, and many The manufacture mold of the igniter holder for lighters, characterized in that the guide hole 11 is provided.

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