JPS6235332B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, a group of cutting blades includes a set of two opposing core wire cutting blades and a set of two coated cutting blades arranged in parallel and opposite to each other on both sides of the cutting blades, and There was a coated wire cutting/coating stripping machine comprising a clamp device that reciprocated above or in the middle of the group of cutting blades to pull out and pull the coated wire. In the case of such machines, it is necessary to change the sheathing stripping length each time depending on the use of the wire, and the method of adjusting the cutting blade spacing in conjunction with changing the sheathing stripping length is to change the cutting blade spacing. A method that has been used for many years is to increase or decrease the number of plate-shaped spacers of various thicknesses interposed between them. However, with this method, each time the coating stripping length is changed, the group of cutting blades is disassembled and many spacers of different thickness prepared in advance are selected, and when tightening with the tightening screw, the height of each cutting blade is Since extreme care must be taken to avoid irregularities and inclinations, this process is very complicated and time-consuming, and takes a great deal of time, resulting in a significant drop in processing performance. In order to solve the above-mentioned problem, the present applicant has proposed the patent application No. 49-143145 (Japanese Patent Publication No.
As disclosed in No. 32098), there is a cutting blade spacing adjustment mechanism that uses a screw type to adjust the spacing between the coated cutting blade and the core wire cutting blade by independent sliding movement of the coated cutting blade alone, without relying on the insertion and removal of spacers. developed. However, in this case, the cutting blade spacing can be adjusted very easily and finely, but even though the coated cutting blade is a consumable item, it must be machined from the raw material to create a special shape. As a result, the price of replacement coated cutting blades is not only expensive due to the processing costs, but also the thin wall thickness of the blade tends to cause distortion during heat treatment processes such as quenching, which poses problems in terms of processing accuracy. Furthermore, if the type or diameter of the wire is frequently changed, the cutting blade group must be disassembled and the coated cutting blade must be replaced each time, which is extremely time consuming and has unresolved problems.

In view of the above-mentioned current situation, the present invention provides a coated cutting blade holder on both sides of a core wire cutting blade, which allows the coated cutting blade to be easily attached and detached from the upper part of the exterior where there is a relatively large amount of space, and the coated cutting blade holder By making it a screw type so that it can move forward and backward toward the core wire cutting blade, it goes without saying that the spacing between the cutting blades can be easily and accurately adjusted, and the coated cutting blade does not require any special work. A coated wire cutting/coating stripping machine that is characterized by the ability to easily and quickly replace the coated cutting blade without reducing processing capacity even when the coated cutting blade must be replaced frequently. The present invention provides a cutting blade spacing adjustment device.

This will be explained in detail with reference to the embodiment shown in the figure, but for convenience of explanation, left and right are shown in FIG.
side), top and bottom are front (part, direction, side), back (part, direction,
surface).

Reference numerals 1 and 2 denote front and rear cutter assemblies arranged opposite each other, which are fixed on the front slide and rear slide (not shown), respectively, and are connected to the machine via a rack 4 and an L-shaped rack 5 that mesh with the pinion 3. They are moved in mutually opposite directions by an appropriate drive source and transmission mechanism (not shown) provided in the main body.

Incidentally, since the front cutter assembly 1 and the rear cutter assembly 2 can have completely the same configuration, only the rear cutter assembly 2 will be explained in the following explanation.

Reference numeral 6 denotes a box-shaped main body with openings on the facing side and the top, and a long groove 6a is cut in the center of the lower surface in the front-rear direction for positioning when fixing to the rear slide.

7 and 8 are rectangular parallelepiped left and right blocks movably arranged at right angle corners between the bottom plate and the rear plate in the main body 6, and a core wire cutting blade is installed between the left and right blocks 7 and 8 in the center of the main body 6. 9, and place it on the left side of the main body 6.
The core wire cutting blade 9 is clamped and fixed by push screws 10, 10 screwed into the right side plate.

11 and 12 are the left and right blocks 7, respectively.
The left and right coated cutting blade holders are formed and placed symmetrically on the bottom plate inside the main body 6 on the front side of the block 8, and the chamfered parts 11a and 12a at the upper end of the rear part and the front parts of the left and right blocks 7 and 8 The front upward slopes 7a and 8a formed at the upper end can be engaged, and when engaged, a slight corner gap is formed between the rear surfaces 11b and 12b and the front surfaces 7b and 8b of the left and right blocks 7 and 8. C-rings 13a, 14 are inserted into the left and right side plates of the main body 6 toward the core wire cutting blade 9.
Adjustment screw bolt 1 supported freely by a
3 and 14 are screwed into the rear upper part of each of the coated cutting blade holders 11 and 12, and are moved in the left-right direction by operating the knobs 13b and 14b of the post-adjustment screw bolts 13 and 14. 15 and 16 are inserted into long notches 6b, 7c, and 8c cut in the left and right direction in the rear plate of the main body 6 and the left and right blocks 7 and 8, respectively, and are inserted into the left and right coated cutting blade holders 11, 16, respectively.
By tightening the threaded bolts 15 and 16 screwed into the rear surfaces 11b and 12b of 12, the left and right coated cutting blade holders 11 and 12 are pulled rearward at predetermined positions, and the chamfered portions 11a, The holders 11 and 12 are attached to the main body 6 by the wedge action generated between the holder 11a and the slopes 7a and 8a.
It seems to be fixed by pressing it against the bottom plate. 1
Reference numerals 7 and 18 designate lock bolts screwed into the rear portions of the upper surfaces 11c and 12c of the left and right covered cutting blade holders 11 and 12, respectively.
The threaded end portions of the threaded bolts 15, 16 are pressed through a copper piece (copper piece) to prevent the threaded bolts from rotating.

20 and 21 are the left and right coated cutting blade holders 1;
1 and 12 right and left sides 11d and 12d, respectively
(i.e., the side surface on the side of the core wire cutting blade 9) A long groove extending in the front-rear direction protruding from the lower part, and between each of the long grooves 20, 21 and the protrusions 11a', 12d' formed at the upper ends of the right and left side surfaces 11d, 12d. The rear portions of the left and right coated cutting blades 22 and 23 are inserted, respectively, and their rear ends are brought into contact with stopper pins 24 and 25 implanted in the lower rear portions of the right and left side surfaces 11d and 12d.

26 and 27 are the left and right coated cutting blades 2, respectively.
The inner chamfers 26a' and 2 of the left and right legs 26a and 27a, respectively, are shaped by the shaping members of the fixing holders 2 and 23.
7a' on the left and right sides 11e and 12e of the left and right coated cutting blade holders 11 and 12 (i.e., the anti-core cutting blade 9
(Side surface) Engage with the slopes 11e' and 12e' formed on the upper end, and connect the right and left legs 26b and 27b with the left and right legs 26b and 27b.
Right and left side surfaces 11 of right coated cutting blade holder 11, 12
The left and right coated cutting blades 22,
The coated cutting blade holders 11 and 12 were fitted with the upper surfaces 11c and 12c of each coated cutting blade holder 11 and 12 so that the upper part of the blade holder 23 was interposed therebetween, and inserted into the horizontal parts 26c and 27c of the shape holding member from above and screwed into the upper surfaces 11c and 12c. The tightening action of the tightening bolts 28 and 29 creates a wedge action between the inner chamfers 26a' and 27a' and the slopes 11e' and 12e', thereby tightening the left and right coated cutting blades 2.
2 and 23 are drawn toward the opposite side of the core wire cutting blade 9 (to the left and right, respectively) and are fixed to the right and left side surfaces 11d and 12d by pressure.

Reference numeral 30 denotes a scale plate attached to the rear upper surface of the main body 6, and has scales engraved in 1 mm increments on the left and right sides with the center point as the reference scale "0" on the front edge inclined surface 30a.

Therefore, in order to position each cutting blade, first lock bolts 17 and 18 on the rear cutter assembly 2 side.
, and then unscrew the threaded bolts 15 and 16 to release the fixation of the left and right coated cutting blade holders 11 and 12. Next, the push screws 10, 10 of the main body 6 are operated to align the edge-side side surface (the right side surface 9a in FIGS. 1 and 2) of the core wire cutting blade 9 with the reference scale "0" on the scale plate 30 and fix it. Furthermore, in order to adjust the left and right coating stripping lengths, that is, the distances L ₁ and L ₂ between the cutting edge side surface 9a of the core wire cutting blade 9 and the left and right coating cutting blades 22 and 23, the adjustment screw bolt 13, 14 knobs 13
b, 14b to remove the left and right coated cutting blade holders 1.
1 and 12 to the left and right, and move the side surfaces of the left and right coated cutting blades 22 and 23 on the blade edge side (the right side surfaces 22a and 23a in FIGS. 1 and 2) respectively to the scale plate 30.
Tighten the threaded bolts 15, 16 in a state where they are aligned with the predetermined scale positions, and further tighten the lock bolts 17, 18 to tighten the threaded bolts 15, 1.
6. Perform the rotation stopper.

Next, when positioning each cutting blade on the front cutter assembly 1 side, manually move the front and rear cutter assemblies 1 and 2 close to the cutting blade engagement position, and position the core wire cutting blade 9' in close contact with the cutting blade 9. At this time, the core wire cutting blade 9' is fixed in the same manner as in the rear cutter assembly 2, and the coated cutting blades 22' and 23' are similarly adjusted to the positions where they are in close contact with the adjusted coated cutting blades 23 and 22, respectively. If you fix it with
L ₁ and L ₂ are set accurately.

When replacing the core wire cutting blades 9, 9', first loosen the lock bolts 17, 18, 17', 18' and screw bolts 15, 16, 15', 16', then loosen the push screws 10, 10 and replace the core wire cutting blades. 9 and 9', and then align and fix the reference scale "0" again.

In addition, when replacing each coated cutting blade 22, 23, 22', 23', simply tighten the tightening bolts 28, 29, 2.
Loosen 8', 29' and remove the shape holding members 26, 27, 2.
If you lift up 6' and 27', the coated cutting blades 22 and 2 will be removed.
3', 22', and 23' can be easily replaced.

As detailed above, in the device of the present invention,
The coated cutting blade is attached to the coated cutting blade holder using a simple attachment/detachment mechanism, and the coated cutting blade holder is slid independently by a screw drive mechanism, and the core wire cutting blade is attached to the moving path of the coated cutting blade holder. Since the scale plate installed along the line is removably fixed in accordance with the reference scale "0", the spacing of the sheath cutting blades can be adjusted quickly and accurately by simply using a knob such as a threaded bolt. Of course,
The coating cutting blade can be easily replaced using a knob from above, which is relatively spacious and easy to operate, so even if the coating cutting blade needs to be replaced frequently, there will be no reduction in processing capacity. Able to respond quickly. Furthermore, since neither the core wire cutting blade nor the coated cutting blade need to be specially shaped, they can be manufactured at low cost, and no tools are required when adjusting the cutting blade spacing or replacing the coated cutting blade as mentioned above. has advantages.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway plan view of the device of the present invention, FIGS. 2 and 3 are views taken along arrows X to X and Y to Y in FIG. The figure is the first
It is a sectional view taken along the Z-Z arrow in the figure. In the figure, 1 and 2 are the front and rear cutter assemblies, 6 is the main body, 9 is the core wire cutting blade, 11 is the left coated cutting blade holder, 12 is the right coated cutting blade holder, 1
3 and 14 are adjusting screw bolts, 22 is a left coated cutting blade, 23 is a right coated cutting blade, and 30 is a scale plate.

Claims (1)

[Claims] 1 Core wire cutting is performed by opening and closing movements of a pair of cutter assemblies, which are equipped with a pair of opposing core wire cutting blades and a pair of coated cutting blades, each of which is arranged in parallel and opposed to each other on both sides of the cutting blades. The coating is cut on both sides of the cutting part, and the coating is stripped off on both sides of the cutting part by pulling the wire rod toward the side opposite to the cutter assembly of movable clamps provided separately on both sides of the cutter assembly. , each of the cutter assemblies is provided with a core wire cutting blade fixing mechanism that allows the core wire cutting blade to be detachably fixed in the center of the main body formed in a box shape with an open top and front surface. In the machine, two coated cutting blade holders are slidably arranged on both sides of the core wire cutting blade in the main body, and each coated cutting blade holder is placed in a groove formed on a side portion of the core wire cutting blade. The coated cutting blade is inserted into the coated cutting blade holder, and the coated cutting blade can be tightened and fixed by a coated cutting blade tightening mechanism formed on the coated cutting blade holder, and the coated cutting blade holder is attached to each side plate of the main body. A sheathing cutting blade spacing adjustment mechanism in which an adjustment screw bolt inserted toward the core wire cutting blade is screwed into the sheathing cutting blade holder allows the sheathing cutting blade to be adjusted to move forward and backward toward the sheathing cutting blade, and the sheath cutting The blade tightening mechanism is configured such that the inner lower end of the leg on the side opposite to the core wire cutting blade of the member formed in the shape is sloped, and when the tightening bolt is tightened, the slope portion is attached to the side opposite to the core wire cutting blade side of the coated cutting blade holder. The coated cutting blade is fixed between the core wire cutting blade side leg portion of the shaped member and the side surface of the coated cutting blade holder by causing a wedge action by engagement with the slope portion formed on the upper side surface. This is a cutting blade spacing adjustment device for a coated wire cutting/coating stripping machine.