JPS614656A - Cutting device - Google Patents

Abstract

PURPOSE:To prevent a pin from tilting and bending as well as to aim at speedy cutting of the pin with a lot of nicks, by cutting the pin in a way of pressing a holding plate, provided with plural pieces of guide holes forming the inlet taper form and the outlet into straight form each, to the top of a product under pressure with a slide shaft. CONSTITUTION:First, a pin 8 of a product 7 arrives at a top surface 58 by means of a taper 12 of a holding plate 14, while the top surface 58 of the product 7 is spotted outward in a horizontal direction by means of a lower surface of a holding plate 14 and, after this holding plate 14 reaches the top surface of the product 7, if further moving in an X direction, a clearance A comes to nothing at all, whereby one end of a slide shaft 15 comes into contact with a stopper bolt 25, therefore cut length of the pin 8 is regulated, and motion of a sliding body 28 comes to a stop. Here, a cutter 48 is rotated and moved in the X direction, it is going to cut the pin 8 in succession. And, top and bottom of the holding plate 14 and the cutter 48 operate independently via a compression spring 17, therefore the pin 8 is cut after its holding is performable at the outset by a guide hole 11 of the holding plate 14 so that any bending in the pin 8 comes to nothing at all, and since the cutter 48 stops at constant height, unevenness in size of the pin 8 is thus eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for cutting the ends of pins, lead wires, etc.

Structure of the conventional example and its problems As the specific structure of the conventional cutting device is shown in Fig. 1,
The chuck 1 holds the outer periphery 3 of the product 2, and the cutter 4
By rotating and moving horizontally, product 2
It was intended to cut the pin 6 of. In such a configuration, since the product 2 is held only by the vertical force of the chuck 1, the product 2 moves in the circumferential direction 6 due to the cutting force in the horizontal direction. Therefore, in order to cut with the pin 5 tilted,
There was a problem that the lengths of the pins 6 were uneven. Also, since the cutting method is to move the cutter 4 in the horizontal direction, if the depth of cut of the pin 5 is large, the pin 6 will be bent in the horizontal direction Y, so the depth of cut should be made small. This required cutting in several parts, which took a long time and resulted in poor work efficiency.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks and relates to a cutting device that can sufficiently handle variations in the size of product bodies.

Structure of the Invention The present invention provides a guide hole with a tapered entrance and a straight pin exit, a holding plate provided with a plurality of the guide holes, and a slide shaft for pressing the holding plate against the upper surface of the product.
A cutter that cuts the pin on the top side of the product, a drive source provided separately from the cutter, a sliding body that allows the drive source to slide vertically, and a height between the holding plate and the cutter blade. It consists of a stopper whose depth can be adjusted to prevent the pin from falling and bending, and even if the pin has a large depth of cut, it can be cut in a short time.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 to 4. In the figure, 7 is a product, 8 is a plurality of pins at one end of the product γ, 9 is a chuck that holds the product 7 in the circumferential direction 10, 11 is a tapered inlet 12. 14 is a holding plate having a plurality of guide holes 11; 15 is a holding plate having one end formed in the holding plate 1;
4. The slide shaft 16b fixed to the pole) 16a is
A seat plate that holds the compression spring 17, 18 and 19 are bearings that guide the slide shaft 15, and 2o are the bearings 18, 19 and the pin 21.
22 has a hole 23 that engages with the pin 21 at one end and a stop plate fixed to the slide shaft 16 at the other end; 24 is a bracket that has a stopper bolt 26 built therein; A bolt fastened to the motor base 27, 28 is a sliding body that fixes the motor base 27 via a bolt 29, 30 and 31 are bearings built into the sliding body 30, and 32 is in contact with a stopper 33 and is fixed to the sliding body 28. 34 is a shaft that engages with the bearings 30 and 31;
6 is a bracket for fixing the shaft 34, 36 is a bolt for fixing the shaft 34, 37 is a plate fixed to the sliding body 28,
38 is a compression spring', 39 is a spacer, 40 is a spacer, 41 is a retaining ring that holds the spacer 40 in the axial direction, and 42 is a plate 37
The collar 43 stops the collar 42 in the axial direction.
4, a bolt 45 is a bearing, 46 is a housing that incorporates a bearing 46 and guides the shaft 44, 47 has one end fixed to the housing 46VC, and the other end fixed to the stopper 33. This is a block to which a bracket 35 is fixed. 48 is a cutter, 49 (d cutter 48 is connected to the holding shaft 6 via the intermediate shaft 5o);
1, a seat 62 fastens the seat, and 63 an intermediate shaft 50. A key 54 that transmits the rotational direction of the holding shaft 51
For example, a bolt for fixing the key, 5514 a balancer for balancing the rotation, 56 a nut for preventing the screw of the holding shaft 51 from loosening, and 57 a motor. When shaft 44 is moved in the direction of arrow X, plate 37. Sliding body 28, motor base 27. The cutter 48 similarly begins to move in the X direction. First, the pin 8 of the product 7 is guided by the taper 12 of the holding plate 11 until it reaches the upper surface 68, and the upper surface 58 of the product 7 is positioned in the horizontal direction by the lower surface of the holding plate 14. Next, after the holding plate 14 reaches the top surface of the product 7 and moves further in the X direction, the gap A disappears, one end of the slide shaft 15 comes into contact with the stopper bolt 25, and the product 7
The dimension B from the upper surface 68 to the lower surface of the cutter 48, that is, the cut length of the pin 80 is regulated, and the movement of the sliding body 28 is stopped. At this time, by rotating the motor 57, the cutter is rotated and moved in the X direction.
Cut pin 8. Since the upper and lower parts of the holding plate 14 and the cutter 48 operate independently via the compression springs 17, the pin 8 is first held by the guide hole 11 of the holding plate, and then the pin 8 is cut, so there is no need to bend the pin 8. Since the cutter 48 stops at a constant height, the pins 8 will not be misaligned.

In addition, the holding plate 14 holds down the top surface of the product 7, and even if the product is tilted, it is leveled, and the diameter of the product 7 is small.
Even if a gap occurs with the chuck 9, it can always be leveled, so cutting to the length of the heavy bin 8 can be performed stably. Further, since the cutting amount increases as the cutter 48 gradually moves from above in the X direction, the cutting can be completed with one downward movement of the cutter 48. At this time, the height of the cutter can be kept constant by adjusting the gaps C and D so that they do not become zero.

Effects of the Invention As described above, in the present invention, the pin is completely supported and cut in the guide hole that guides the pin, so there is no bending of the pin, and the length of the pin is cut from the length direction. Because of this, the process can be completed with one movement of the cutter, resulting in a short processing time. Since the upper surface of the product is still directly pressed, even if the chucked state of the product is not horizontal, positioning is performed automatically. Furthermore, even if there is some play in the chuck due to variations in the diameter of the product, the pin can be regulated using the horizontal holding plate.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional cutting device, Fig. 2 is a sectional view of a cutting device according to an embodiment of the present invention, Fig. 3 is an enlarged sectional view of the same essential parts, and Fig. 4 is a front view of the cutting device. It is a diagram. 5.8 ・Pin, 12... Taper, 13-...
- Straight, 11... Guide hole, 14 - Holding plate, 2.7 - Product, 68 - Top surface, 48...
-Cutter, 15...Slide shaft, 67...Drive source (motor), 28...Sliding body, 25...Stopper. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 4 Figure 2.5

Claims (1)

[Claims] A guide hole with a tapered entrance and a straight pin exit, a holding plate with a plurality of said guide holes, a slide shaft that presses said holding plate against the top surface of the product, and a cutter that cuts the pin on the top side of the product. and a drive source provided separately from the cutter, a sliding body that allows the drive source to slide in the vertical direction, and a stopper that allows the height of the holding plate and the cutter blade to be adjusted. A cutting device.