JP3258114B2 - Welder and welder mold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a welder and a welder mold used for welding and forming a medical device comprising a tube, a sheet, and other parts made of a thermoplastic resin.

[0002]

2. Description of the Related Art At present, generally used welders are equipped with separate dies on the upper working side and the lower fixed side of a press device, and each time the centering, the parallelism, and the time of pressing are performed. It is necessary to adjust the clearance and the like, and the work requires considerable skill. For this reason, the centering accuracy is greatly affected by the skill of the operator.

Further, changes in the temperature around the equipment and the mold temperature,
Due to aging, it was difficult to maintain accuracy. In a high-frequency welder, a high-frequency high voltage is applied.
The upper and lower dies must be electrically insulated and installed.
Inevitably, an insulating material having poor mechanical strength and accuracy such as bakelite must be used. For the above reasons,
It has been difficult to uniformly weld and secondary form medical devices. The inventor of the present invention has made intensive studies in order to solve the above-mentioned problems, and has arrived at the following invention.

[0004]

Means for Solving the Problems [1] In the present invention, an upper mold 16 is disposed on the bottom surface, and slide shaft mounting holes 15A, 15A are formed on both sides of the upper mold 16, and the slide shaft mounting holes are formed. Insulating adjust bolt mounting holes 15B, 15B are formed on both sides of 15A, 15A, and a slide unit 15 with an insulating joint 12 mounted on the top surface and a lower mold 17 are arranged on the top surface. Slide base 19 with slide shafts 18, 18 protruding therefrom
And the slide shafts 18 and 18 are connected to the slide shaft mounting hole 1 through an insulating bush 14.
5A, 15A, slidably mounted, and an insulating adjustment bolt 1 having a washer 13B mounted on the outer periphery of a screw portion 13A in the insulating adjustment bolt mounting holes 15B, 15B.
Welder mold 3 provided with 3, 13 is provided.

[2] The present invention provides a welder mold 3 according to [1], in which the insulating bush 14 is provided between the slide unit 15 and the slide shafts 18 instead of the slide shaft 28 and the upper mold. A welder mold 21 provided with an insulating material 22 between 26 is provided.

[3] In the present invention, the welder body 2 is
And an upper arm 4 arranged above the table 5, [1]
To the upper arm 4 as described in [2].
Also disposed on the base 5 so as to be positioned below the front
To provide a welder 1 equipped with a press cylinder 11 to the serial upper arm 4.

[0007]

FIG. 1 is a schematic view of a welder 1 according to the present invention. The welder 1 has a welder body 2 on a base 5 and above the base 5.
The upper arm 4 to be placed and the welder mold 3 in front
Arranged on the table 5 so as to be located below the upper arm 4
With the press cylinder 11 attached to the upper arm 4.
More composed in the door.

FIG. 2 is an enlarged view of the welder mold 3 of FIG. 1. The welder mold 3 has an upper mold 16 disposed on the bottom surface, and slide shaft mounting holes 1 on both sides of the upper mold 16.
5A and 15A are formed, and the slide shaft mounting holes 15 are formed.
A, 15A insulation adjusting bolt mounting holes 15 on both sides
B, 15B, and a slide unit 15 having an insulating joint 12 mounted on a top surface thereof, and a lower mold 17 disposed on the top surface, and slide shafts 1 on both sides of the lower mold 17.
, And a slide base 19 protruding from the slide bush 18.
4, the slide shaft mounting holes 15A, 15A
And the insulating adjust bolts 13 with a washer 13B mounted on the outer periphery of the screw portion 13A are mounted in the insulating adjust bolt mounting holes 15B and 15B.

By interposing the insulating bush 14 between the slide unit 15 and the slide shaft 18, the upper mold 16 and the lower mold 17 are electrically insulated.
Also, the insulation adjustment bolt 1 is attached to the slide unit 15.
Since the centering, the parallelism, the clearance, and the like can be adjusted by attaching 3, 3, the accuracy can be sufficiently reproduced even by a beginner. Also, when high-frequency welding is performed by disposing the insulating joint 12 on the top surface of the slide unit 15, the upper mold 16 and the lower mold 17 are electrically insulated by the insulating joint 12, the insulating adjustment bolt 13 and the insulating bush 14. Therefore, the slide unit 15 serves as an anode (cathode) and the slide base 19 serves as a cathode (anode).

FIG. 3 is a schematic view showing another embodiment of the welder mold. The welder mold 21 is a slide in the welder mold 3 of FIG. 2 instead of providing the insulating bush 14 between the slide unit 15 and the slide shaft 18. Unity
The insulating material 22 is provided between the metal mold 28 and the upper mold 26. The other constituent materials are substantially the same as those of the welder mold 3, so that detailed description is omitted.

In the present invention, the upper slide unit 15, the upper mold 16, the lower mold 17, and the slide base are provided.
Since the material 19 is made of a tempering material (a material obtained by repeating heat treatment and eliminating generation of distortion due to heat) made of an iron alloy, distortion due to temperature change can be minimized.

[0012]

(1) The work piece 20 is placed on the lower mold 17 and the slide unit 15 is pushed downward by the press cylinder 11 so that the work piece 20 ( (Medical tool) and can be subjected to secondary molding. At this time, since the insulating adjustment bolt 13 is mounted on the slide unit 15, the centering, the parallelism, and the accuracy of the clearance of the welder mold 3 (upper mold 16) must be maintained even from different workers. Can be. It is not necessary to increase the precision of machinery and equipment, it can be inexpensive, and adjustment is easy. Adjustment using a measuring instrument is also possible, so even beginners can secure sufficient accuracy.
(2) Since the upper mold and the lower mold are electrically insulated, they can be used for a high-frequency welder.

[Brief description of the drawings]

FIG. 1 is a schematic view of a welder of the present invention.

FIG. 2 is a schematic view of a welder mold installed in FIG. 1;

FIG. 3 is a schematic view showing another embodiment of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Welder 2 Welder main body 3, 21 Welder mold 4 Upper arm 5 units 11 Press cylinder 12 Insulation joint 13 Insulation adjustment bolt 13A Screw part 13B Washer 14 Insulation bush 15 Upper slide unit 15A, 15A Slide shaft mounting hole 15B, 15B Insulation adjustment bolt Mounting hole 16, 26 Upper die 17 Lower die 18 Slide shaft 19 Slide base 20 Workpiece 22 Insulating material 28 Slide unit

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 63/00-65/82 B29C 33/00-33/76 B29C 39/26-39/36 B29C 41/38-41 / 44 B29C 43/36-43/42 B29C 43/50 B29C 45/26-45/44 B29C 45/64-45/68 B29C 45/73 B29C 49/48-49/56 B29C 49/70 B29C 51/30 -51/40 B29C 51/44

Claims (3)

(57) [Claims] 1. An upper mold 16 is disposed on a bottom surface, slide shaft mounting holes 15A are formed on both sides of the upper mold 16, and insulating adjust bolt mounting holes are formed on both sides of the slide shaft mounting holes 15A. Slide units 15B, 15B are formed, and a slide unit 15 having an insulating joint 12 mounted on the top surface thereof, and a lower mold 17 disposed on the top surface, and slide shafts 18, 18 protruding from both sides of the lower mold 17 are provided. The slide shafts 18, 18 are slidably mounted in the slide shaft mounting holes 15A, 15A via insulating bushes 14, and the outer periphery of the screw portion 13A is mounted in the insulating adjustment bolt mounting holes 15B, 15B. Welder characterized in that insulating adjust bolts 13, 13 having washers 13B mounted thereon are mounted thereon. Mold 3. 2. The slide unit 15 and the slide shaft 1 in the welder mold 3 according to claim 1.
A welder mold 21 characterized in that an insulating material 22 is provided between a slide unit 28 and an upper mold 26 instead of providing the insulating bush 14 between 8, 8. 3. The welder body 2.On the table 5 and above the table 5
And the upper arm 4 to be arranged,  The welder mold 3, 21 according to claim 1 or claim 2.
ToSo that it is located below the upper arm 4On table 5
Placed inSaidA press cylinder 11 is attached to the upper arm 4
A welder 1 characterized in that: