JPH04110785U - A two-head crimping machine with the crimping part located at the top, as well as a model that takes into account installation and manufacturing methods. - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a machine for crimping work that connects two or more strings, wires, threads, etc. via a metal tube.

[Prior Art] Since crimping requires a large amount of force, this type of machine has a force amplification mechanism.

Conventionally, this type of machine has used a hydraulic cylinder or pneumatic cylinder as shown in Figure 8, a crank as shown in Figure 9, and a manual type with a long lever as shown in Figure 11. It is known that a crank is used.

Further, as a method of mounting the mold, a method of press-fitting it into a groove as shown in FIGS. 5 and 6 is used.

At this time, precise dimensional tolerances are required, but the dimensional tolerances of molds and grooves actually used in the past are large.

To compensate for this, paper is used as a shim and press-fitted.

[Problems to be solved by the invention] 1. As a result of using a force amplification mechanism in the crimping machine, the movement of the attachment part becomes slow.

Furthermore, in the conventional technology, it is necessary to open the mold in order to take out the workpiece after crimping, and this takes the same amount of time as crimping, or even if a quick return mechanism is used, it takes several hours. It takes half the time.

2. In the crimping machine described in the prior art section, the crimping section is arranged from the middle to the bottom of the machine, making it difficult to see the crimping section and making it difficult to operate.

3. In the mold mounting method described in the prior art, the dimensional tolerance between the groove and the mold must be reduced.

However, molds are manufactured from sintered alloys because they are required to be hard and inexpensive.

As a result, items smaller than the groove may fall off if the required dimensional accuracy is not achieved and are attached to the upper groove, and items larger than the groove may not be able to be attached, or may be difficult to remove if they are forcefully attached.

The present invention was devised in view of the above-mentioned problems with the conventional technology, and its objectives are to provide inexpensive crimping work, shorten crimping work time, ensure crimping work, and furthermore, eliminate manual crimping. The aim is to provide a smaller crimping machine that can be carried around.

[Means for Solving the Problems] In order to achieve the above object, the crimping machine of the present invention has the following features: 1. There are two mounting parts for the mold, and when one is closed, the other is open. Since the crimping machine is arranged so that the crimping machine is in the same position as the conventional crimping machines, there is no time required to take out the workpiece after crimping and open the mold to insert the next workpiece.

2. Since the mounting part of the mold is placed upward, the crimping part is easier to see and the reliability of the crimping work is increased.

3. Conventionally, there was a problem that the dimensions of the mold and the groove did not match, but by creating a notch in the mold and setting a fall prevention device in the notch to prevent it from falling off, as shown in Figure 5, The dimensional tolerance between the mold and the groove can be increased, and the mold can be manufactured using sintered metal.

4. Due to the direct use of motor power compared to methods that use hydraulic or pneumatic pressure, and the relationship between the working angles of the forces created by levers 3 and 4 in Figure 1, as the crimp part collapses, the resistance force increases. This is in line with the ever-increasing reality, making crimping machines cheaper and more compact.

[Operation] 1. When the crimping machine configured as described above is set in the state shown in Fig. 1 with a workpiece placed in the crimping mold on the right side and started, the lever 3 moves in the direction of arrow B, and as shown in Fig. 4. The mold on the right side is closed and the mold on the left side is open.

When a work is set in the mold on the left and restarted, the mold on the left closes and the mold on the right opens as shown in Figure 1. Therefore, the compressed work can be taken out and a new work can be set.

As shown in Figure 12, which shows the force relationship, the crimping force W has the relationship W = (a/b) x (T/sin θ), and the magnification rate of the force is minimized at θ = 90°. It becomes maximum infinity at θ=0°.

[Example] An example will be described with reference to the drawings. In FIG. 1, the lever 4 is fixed to the output shaft of a reduction gear 7, and the reduction gear 7 is driven by a motor 8.

The slider 10 is rotatably supported by a shaft 13 and can slide in a guide groove 14 provided in the lever 3.

The upper die holder 9 is integrated with the lever 3 and has a shaft 9.
It is pivotably supported on.

The lower mold holder 6 is integrated with the mount of the speed reducer and is able to support the large force applied by the upper mold holder 5.

FIG. 10 shows the workpieces. For example, the metal tube 15 is made of aluminum alloy, and the wire 16 is made of steel.

The operator sets the metal tube 15 between the molds 1 and 2 on the right side in FIG. 1 in advance in a state as shown in FIG. 10.

When the lever 4 rotates in the direction of arrow A in FIG. 1 by operating the motor 8, the lever 3 rotates in the direction of arrow B.

Therefore, molds 1 and 2 on the right side gradually close, and finally reach the state shown in FIG.

In the embodiment shown in FIG.
is made of sintered metal, and the head of a bolt with a hole is used to prevent it from falling off.

[Effects of the invention] Since the present invention is configured as described above, it produces the effects described below.

By using the two-head type, the lever 4 only needs to be rotated approximately 210 degrees for one crimping.

In the case of a single head type, it is necessary to rotate 360 degrees, and the operating time is about 210 degrees.
° / 360 ° = 0.58, which means that it takes about 58% of the time of the single-head type.

Since there is nothing above the upper mold holder 5, the crimping part is clearly visible and workability is improved.

By providing a notch in the crimping mold and attaching a drop-off prevention device, it will not fall off even if there is a large difference between the dimensions of the groove and the mold.

Also, the adjustment method using paper shims is as follows: It requires skill, but it is no longer necessary.

[Brief explanation of the drawing]

Figure 1 is a front view of the crimping machine, Figure 2 is a right side view, Figure 3 is a top view, and Figure 4 is the opposite situation to Figure 1, with the left mold open and the right mold closed. A front view of a certain crimping machine, Fig. 5 is a perspective view of the die and groove, Fig. 6 is an enlarged front view of the attachment part of the die, Fig. 7 is a side view of Fig. 6, and Fig. 8 is a hydraulic or pneumatic crimping machine. Fig. 9 shows a crimping machine using a pressure cylinder, Fig. 10 shows an example of a workpiece, Fig. 11 shows a manual crimping machine, and Fig. 12 shows a crimping machine according to the present invention. It is a relationship diagram of forces. 1... Upper die, 2... Lower die, 3... Lever, 4...
...Lever, 5...Upper die holder, 6...Lower die holder, 7...Reducer, 8...Motor, 9...Shaft, 10...Slide, 11...Mold notch, 12... ... Fall prevention device, 13 ... Shaft, 14 ... Guide groove, 15 ...
...Metal pipe, 16...Tegus.

Claims (3)

[Scope of utility model registration request] Claim 1: The upper mold holder 5 is integral with the lever 3 and is swingably supported by a shaft 9, and the upper mold holder 5 is attached to the right and left sides of the upper mold 1, respectively, with the shaft 9 as the center. I keep each one. The lower die holder 6 holds the lower die 2 in the same manner as the upper die holder 5, and the upper die 1 and the lower die 2 are held in a positional relationship such that they each work as a pair. Further, the shaft 9 is fixedly supported by the lower die holder 6. When lever 4 rotates in the direction of arrow A, lever 3 rotates about axis 9 in the direction of arrow B. Therefore, the mold on the left is open and the mold on the right is closed. A crimping machine configured like this. 2. The crimping machine according to claim 1, wherein the upper die holder 5 is arranged above the axis 9. [Claim 3] The upper mold 1 is fitted with a fall prevention device 12 in the notch 11 of the ear to prevent it from falling off. A crimp type with a cutout like this.