JPH0513628U - Molding machine for headed teeth - Google Patents

Abstract

(57) [Abstract] [Objective] For example, to a molding device for a headed chase for forming a branch passage in a fluid pipe. [Structure] A mold in which a material tube having a bulging portion in a direction substantially orthogonal to the axial direction is inserted, and a terminal end of a branch portion into which the bulging portion of the mold is fitted. It is composed of a processing means having a perforated part and an expanded part connected to the perforated part so as to move forward and backward with respect to the bulged part through the formed opening.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a molding device for a headed chase for forming a branch path in a fluid line, for example.

[0002]

[Prior Art]

 This conventional seeded head is mainly manufactured by bulge molding, and in order to secure the length of the branch pipe for forming the branch passage, prepare a relatively long material pipe and push it in. To form a bulge, and the bulge was cut midway.

[0003]

[Problems to be solved by the device]

 As a result of using the above-mentioned molding method in the past, the amount of indentation was large. There were many, and there was a limit to thinning. In addition, as described above, since a large amount of pushing is required, the inner diameter of the mother pipe may become small and it may not be possible to fit within the tolerance of the joint.In that case, it is necessary to machine the inner diameter of both ends of the mother pipe. The existence of this inner diameter processed portion causes a liquid pool in the piping line, which causes corrosion.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention proposes a mold in which a material pipe having a bulge portion in a direction substantially orthogonal to the axial direction is inserted by means of bulging or the like, and a mold of this mold. A piercing part and an expanding part connected to the piercing part so as to move forward and backward with respect to the bulging part through an opening formed at the end of the branch part into which the bulging part is inserted. The present invention proposes a headed-chess forming device composed of a processing means.

[0005]

[Action]

 In the apparatus of the present invention having the above-mentioned configuration, the working means is press-fitted from the opening, and the piercing work and the expanding work for the bulging part are performed as a series of works.

[0006]

【Example】

 The present invention will be described below with reference to the accompanying drawings. In FIG. 1, a headed tooth 2 formed by molding a bulging portion 2 in a direction substantially orthogonal to the axial direction of a raw material tube 1 manufactured by means of bulging or the like is installed in half. Of the mold (this may be divided vertically or horizontally, but it is shown horizontally in the figure) 4 toward and away from the opening 6 formed at the end of the branch 5 into which the bulging portion 2 is inserted. As a processing means 7 to be formed, a punching punch 8 as a punching portion and a taper portion 9 as an expanding portion continuous to this are configured, and the processing means 7 is press-fitted into the bulging portion 2. Then, as shown in FIG. 2, the bulging portion 2 is perforated and expanded to extend the branches of the teeth.

The mold 4 may be a mold only for perforating the expanded portion and expanding the pipe, or may be subjected to bulge forming prior to this work.

[0008]

[Effect of the device]

 According to the device of this invention, the following effects can be obtained. That is, (1) Compared with the conventional method, there is less indentation, the height of the branch pipe is low, and it can be raised to a predetermined height with a punch or the like, so the length of the material pipe is small. I'm done. (2) Since there is less indentation, the thickness increase of the mother pipe is much less than before and the inner diameter does not become smaller, so both ends can be put within the tolerance of the joint without the need for inner diameter machining. It can eliminate the conventional drawbacks. (3) There is no wrinkling as in the past, thin-wall processing is possible, and at the same time, it is possible to mold a product with a large difference between the mother pipe and the branch pipe.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state before performing work of perforating and expanding a pipe in the device of the present invention.

FIG. 2 is a cross-sectional view showing a state in which the device of the present invention has been perforated and expanded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Material 2 Bulging part 3 Headed teeth 4 Mold 5 Branch part 6 Opening part 7 Processing means 8 Punch (punching part) 9 Taper part (expanding part)

Claims (1)

[Scope of utility model registration request] 1. A mold in which a material tube having a bulging portion formed in a direction substantially orthogonal to the axial direction is inserted by means of bulging or the like, and the bulging portion of the die is fitted and inserted. With a head comprising a drilling portion and a processing means provided with an expanding portion continuous with the drilling portion for advancing and retracting with respect to the bulging portion through an opening formed at the end of the branching portion. Molding machine for cheese.