JPH076848A - Terminal crimping device - Google Patents

Abstract

PURPOSE: To provide a terminal crimper device which has a simple structure and can connect a wire to an electrical terminal with high accuracy. CONSTITUTION: A terminal crimper device has a terminal applicator to which terminals are continuously supplied and a reciprocating ram 20 which is reciprocally moved toward the terminal applicator by a drive member 2 formed in an offset manner (eccentrically) on one end of a crank shaft 10 driven by a drive source such as a motor. A drive link 40 having a first hole 42 and a second hole 44 is inserted into a recessed part 24 in an upper end of this reciprocating ram 20. The drive member 2 being pivotally supported in the first hole 42, the second hole 44 being aligned with a shaft hole 48 of the ram 20, a link pin 50 having a second cylindrical eccentric part is passed therethrough. It is made possible to finely adjust crimping height of a terminal by rotation of this link pin 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for crimping an electric terminal to a conductor, and a ram drive link for an automated terminal crimping machine and an adjustable pin for the ram drive link which can select an appropriate crimp height. It is about.

[0002]

BACKGROUND OF THE INVENTION For many years, the connector industry has used automatic crimping presses to terminate large amounts of various cables at high speed. 1 and 2 are, for example, a side view and a front view of a model number 768793 "T type terminating unit" which is one of the automatic crimping devices commercially available from AMP. In general, such a press device is composed of a return ram group 1 driven by an electric motor 3 via a torque amplification mechanism 5.
Various crimping tool heads can be mounted on the lower surface of the ram group 1, and the mounted tool heads are driven by the ram group to the vicinity of the continuous feed applicator 8 to crimp the terminals.

Significant torque amplification is required to generate sufficient downward force to perform the crimping operation. The device of the pulley drive type torque amplification mechanism 5 performs such torque amplification. More specifically, the electric motor 3 is housed in the lower shelf of the illustrated pressing device. A pulley 4 stored in the rear of the press device is driven by this motor 3. When the pulley 4 drives the belt 7 extending upward so as to surround the large flywheel 9, the cylindrical crankshaft is driven via the clutch inside the flywheel 9. The crankshaft is rotatably seated inside the upper part of the press machine and moves forward of the press. Therefore, the offset crank pin 2 is pushed forward from the end surface of the crank shaft, the crank pin 2 deviates from the rotation axis of the crank shaft, and rotates about the rotation axis as the crank shaft rotates.

[0004]

The conventional automatic crimping press device has a push-link design, and the crank pin 2
Is directly connected to a push link 6, which is connected to the ram 20 via a ball joint and a socket 11. Since the crank pin 2 pushes the push link 6 and the ram 20 downward in an angle range of 180 °, the entire ram group 1 and the crimping tool head move toward the applicator 8. In the illustrated press device or a commercially available equivalent press device, it is not easy to adjust the crimp height to compensate for tool wear, dimensional tolerances of replacement tools, or dimensional changes due to temperature changes. Also, with the current structure of the ram group 1, it is difficult to add an appropriate improved adjusting function.

Further, the stroke length of the crank pin 2,
For example, the ram group 1 is moved back a distance equal to about 4.125 inches (1.625 inches), but the terminals are only crimped in the crimp zone, i.e. at the end of the descending region of the ram group. That is, the last 0.254 cm (0.1
(Inch) descent area only. Deformation of the terminals requires forces on the order of thousands of pounds, but relatively little force is required to drive the ram group 1 except during the actual crimping of the terminals. The mechanical effect of the ram drive can be enhanced by extending the rotating portion of the crank pin 2 corresponding to the period during which the crimping is actually performed, but the motor 3 must be downsized. For this reason, it is desirable to concentrate most of the ram displacement at the beginning of the crankpin rotation away from top dead center so that most of the crankpin rotation can be used for the actual crimping operation.

However, as shown in the graph of ram displacement and crank pin rotation of FIG. 6, most of the downward ram displacement is in the final 90 ° range when the crank pin rotates downward. Conventional push links are designed to take place. The graph of ram displacement and crankpin rotation changes as the length of the push link changes. However, at best, when the crankpin rotates downward, the amount of displacement of the ram is equal between the first 90 ° period and the last 90 ° period, that is, a pure sine motion is required. I can't design. Therefore, in order to increase the rotation angle of the crank pin used for the crimping work, a crimping device that performs most of the ram displacement during the first 90 ° of the downward rotation of the crank pin is desired.

According to the present invention, the above object is achieved by pulling the ram downward by using the tension link instead of pressing the push link. Further, the present invention simplifies OEM supply and improvement of the crimp height adjusting function.

The first object of the present invention made in view of the above problems of the prior art is to provide a terminal crimping device having an improved ram drive mechanism.

A second object of the present invention is to provide a terminal crimping device having a ram drive mechanism for increasing the force concentrated on the bottom portion of the ram drive stroke.

A third object of the present invention is to provide a terminal crimping device having a ram drive mechanism which requires a small input power.

A fourth object of the present invention is to provide a terminal crimping device having a ram drive mechanism in which the drive parts are light in weight and the overall structure is downsized.

A fifth object of the present invention is to provide a terminal crimping device having a ram drive mechanism in which all the movable parts of the drive link are housed and sealed on the back side of the ram and which is safe for workers.

A sixth object of the present invention is to provide a terminal crimping device having a ram drive mechanism to which a crimping height adjusting function can be easily added.

[0014]

In order to achieve the above object, a terminal crimping device of the present invention comprises a driving member offset to one end of a crankshaft which is rotationally driven and a reciprocating movement to a terminal crimping region by the driving member. And a drive link having a first hole for axially supporting the driving member and a second hole aligned with the axial hole of the ram for axially supporting the ram.

Further, the terminal crimping device of the present invention comprises a driving member offset to one end of a crankshaft which is rotationally driven, and a ram which is repeatedly moved to the terminal crimping region by the driving member, wherein the driving member is provided. A drive link having a first hole that axially supports and a second hole separated from the first hole; and a link pin that is inserted into the second hole of the drive link and the shaft hole of the ram to form an eccentric portion. Equipped with
The terminal crimping height is finely adjusted by rotating the link pin.

In one aspect of the present invention, the ram drive member is composed of a drive shaft having an offset drive member at one end thereof, and the offset drive member is centered on the axis of the drive shaft while the drive shaft is rotating. Rotate to. Means such as an electric motor are provided for rotating the drive shaft. A ram is disposed which is repeatedly moved with the terminal crimping zone direction as the first direction and the direction away from the terminal crimping zone as the second direction. One end of the drive link is rotatably connected to the drive member, while the other end is joined to the ram, and the ram is repeatedly moved according to the rotation of the drive member. The ram is arranged so that one end of the drive link is relatively in the first direction relative to the other end. With this configuration, the drive link is in a tensioned state while the ram is repeatedly moved in the direction of the terminal crimping zone. This pull-link configuration increases the angle of crankshaft rotation used to move the ram when it is in the terminal crimp zone.
Therefore, the force concentrated on the ram in the terminal crimping zone is increased.

In another aspect of the present invention, a recess is formed in a part of the ram so as to be surrounded by the wall, and a link pin is mounted on the ram. The link pin passes through the inside of the recess and is supported by the wall portions facing each other. A hole communicating with the recess is formed in one of the facing wall portions. The drive member is composed of a crank pin extending from one end of a crank shaft that passes through the hole. The drive link is arranged inside the recess, and a hole for inserting the crank pin is formed at one end of the drive link.

A ram drive mechanism for an automatic terminal crimping device includes a crankshaft having an offset drive member at one end which rotates about the crankshaft during rotation of the crankshaft, a means for rotating the crankshaft, and a terminal. A ram mounted so as to repeatedly move with the direction of the crimping zone as the first direction and the direction away from the terminal crimping zone as the second direction,
One end of the drive link is rotatably connected to the drive member, the other end is joined to the ram, and the drive link repeatedly moves the ram according to the rotation of the drive member. The ram is arranged such that the one end is relatively closer to the first direction than the other end, so that the drive link is pulled while the ram is repeatedly moved in the direction of the terminal crimping zone. It is characterized by becoming.

[0019]

[Operation and effect] Model No. "T-type terminal unit" of FIGS. The 768793 is equipped with a conventional crimp height adjustment mechanism. The crimp height is the vertical height of the terminal after crimping by press working. The crimp height is a function of the height of the press when closed, i.e. the dimension between the upper and lower crimping tools when the ram 20 is at its lowest stroke. The lower crimping tool in the drive direction of the mounting tool head is mounted on the precision adjustment base 12. The precision adjustment base 12 can be offset vertically by turning the adjustment knob 13.
When the offset amount between the base 12 and the lower crimping tool is changed, the crimp height changes. Unfortunately, the adjusting mechanism is composed of the adjusting base 12 and the knob 13, and all the parts between them are complicated and highly accurate machined parts. Due to the complexity of the adjusting mechanism, only OEM production is possible and no improvement can be provided. More importantly, such a complex structure unreasonably increases the cost of the "T-type termination unit". In addition, since this mechanism is located below the work area, there is a problem in that it is easily clogged with dust and dirt.

In addition to this crimp height adjustment mechanism problem, the conventional ram drive assembly has yet another problem. For example, the power transmission from the crank pin 2 to the ram 20 is incomplete, and the force becomes smaller than the optimum force at the crimping point, which may cause structural damage to the press machine. is there. The improved ram drive mechanism of the present invention utilizing the improved crimp height adjustment mechanism solves the problems of the prior art. The advantages of achieving a low price, arranging the adjusting mechanism above the work area, and designing a simple adjusting mechanism that can be mounted on the conventional "T-type terminal unit" are great.

The present invention also provides an improved crimp height adjusting mechanism which is mounted in the return ram of the automated terminal crimping device to adjust the crimp height of the automated terminal crimping device. The crimp height adjusting mechanism of the present invention is composed of a cylindrical crimp height adjusting pin carried by the return ram of the crimping device. The crimp height adjustment pin has an eccentric intermediate portion that is connected to a drive link of the crimping device in a bearing engagement state. A rotor is attached to the crimp height adjusting pin to control the rotation of the eccentric intermediate portion. Controlling the rotation of the eccentric midsection of the crimp height adjustment pin (via the rotor) allows the ram to be vertically offset, thereby adjusting the crimp height of the device.

The rotor is a simple manual adjustment arm, mounted on the outside of the crimp height adjustment pin of the ram,
The adjusting pin can be pivoted in this way.
Alternatively, the rotor may include a first rotary gear attached to the outside of the crimp height adjusting pin of the ram, a shaft having a worm gear engaging with the first rotary gear at one end, and fixed independently of the ram. However, automatic assembly may be performed such as an electric motor that engages with the other end of the shaft to apply a rotational force to the shaft to rotate the eccentric portion of the rotating pin. In any case, there is the convenience that the crimp height of the terminal crimped by the device can be adjusted while performing the work.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the drawings.

1 and 2 show a conventional automatic crimping machine of the "T-type termination unit" model number 768793 commercially available from AMP. Such a press could be improved by installing the ram drive mechanism of the present invention.
This press is composed of a ram group including a return ram 20 driven by an electric motor 3 via a torque amplification mechanism 5. A crankshaft is rotatably seated on the upper portion of the press and transmits the motion from the torque amplification mechanism 5 to the ram group 1. A variety of crimp tool heads can be attached to the underside of the ram 20 and the mounting tool head can be brought into close proximity to cooperate with the continuous feed terminal applicator 8 which holds the terminals to be crimped in place.
Driven downwards by.

FIG. 3 is an exploded perspective view of the ram drive mechanism of the present invention incorporated in the automatic terminal crimping device shown in FIGS. The crankshaft 10 in FIG. 3 extends to the front side of the pressing device, and the drive member 2 projects forward from the end surface of the crankshaft. In the illustrated embodiment, the drive member 2 is a crankpin, which is offset from the axis of rotation of the crankshaft and rotates about the axis of rotation as the crankshaft rotates. However, it is also conceivable to form an offset hole or the like on the end surface of the crankshaft 10 as the same structure as the drive member 2. The drive member 2 is considered to include all equivalent configurations, and the present invention is not limited to the above configurations.

The ram drive mechanism of the present invention includes a hollow block-shaped deformable ram 20 having flange ends 22 formed on both sides.
Is also included. A recess 24 is formed inside the hollow block. The ram 20 is mounted inside a channel 16 formed by the side rails 14 of the press. Side rail 14
A pair of jib 30 is attached to the ram 20 by means of fixing screws 32, and the ram 20 is attached to the channel 1 by this jib.
It is held in 6. The edge 22 is slidably held on the back side of the jib 30 so that the ram 20 can slide vertically.

As shown in FIG. 4, a hole 38 is formed in the wall surface 26 on the back side of the ram 20, and the crank pin 2 is inserted into the recess 24 through this opening. The hole 38 is
It is large enough with a gap that does not hinder the rotation of the crankshaft 2 inside.

As shown in FIGS. 3 and 4, drive link 4
0 is an internal member having a lower hole (first hole) 42 at one end and an upper hole (second hole) 44 at the other end. The drive link 40 is arranged inside the recess 24 of the ram 20. The crank pin 2 projects from the hole 38 (see FIG. 8) and is rotatably inserted into the lower hole 42 of the drive link 40. Since it is rotatably connected to the crank pin 2, the drive link 40 extends upward in the recess 24. The rear wall portion 26 and the front wall portion 2 of the ram 20
Insertion holes 46 and 48 are formed at positions corresponding to the upper holes 44 of the drive link 40 of FIG. Link pin 5
With 0, the ram 20 and the drive link 40 are rotatably connected.

Therefore, the ram drive link of the present invention has the crank pin 2 rotatably connected via the crank pin 2 inserted in the lower hole 42 and the first or lower connection of the drive link 40, Link pin 50 inserted in the upper hole 44
Ram 20 and drive link 4 rotatably connected via
It consists of two connections, a second or an upper connection of zero.

During operation, the rotation of the crankshaft 10 causes the crankpin 2 to rotate about the axis of rotation of the crankshaft 10. Each time the crank pin 2 rotates, the crank pin 2 is displaced in the horizontal and vertical directions. The lateral displacement component is absorbed by the drive link 40, which simply pivots back and forth like a pendulum. Therefore, the ram 20 does not move in the lateral displacement component.

The vertical displacement component of the crank pin 2 is directly converted into the vertical return movement of the ram 20. Crank pin 2
When is rotated upward, the drive link 40 abuts on the crank pin 50, and the crank pin slides the ram 20 sandwiched by the rails 14 upward. On the contrary, when the crank pin 2 is displaced downward, the drive link 40 is pulled, and the ram 20 between the side rails 14 is pulled downward. When the ram 20 moves downwards in this way, the terminals supported by the lower crimping tool arranged on the base of the press are crimped.

The drive link 40 remains tensioned during the entire downward movement of the ram 20, and thus driving in tension preferably changes the downward motion and force characteristics of the crimp. FIG. 6 shows the ram displacement amount as a function of the crankshaft angle in the conventional "T-type terminal unit" having a push-link design and the "G-type terminal unit" having the pull-link ram drive mechanism of the present invention. It is a thing. As shown in FIG. 6, in the “T-type terminal unit”, the last 9 degrees of the rotation angle of the crankshaft are set to the last 9 degrees.
Ram displacement is such that at 0 ° most of the ram motion is generated. Also, the ram is the "crimp area" or the last 0.25
A ram displacement of 4 cm (0.1 inch), for example, the crankshaft rotation angle remains at about 28 °. Compared with this, in the "G type end unit", about 2 / of the downward displacement of the ram at the first 90 ° of the crankshaft rotation.
3 is done. After this, the ram continues to move downward at a lower speed than the "T-type termination unit" ram. However, since most of the ram displacement gain of the "G type termination unit" is obtained in the first 90 ° angular period of the crankshaft, the ram is pressed in the crimping area about 43 ° before the bottom dead center of rotation of the crankshaft. Which increases the dwell time in the crimp area and increases the transmission force acting on the terminal through the ram.

Furthermore, since the moving parts of the ram drive link are housed and sealed behind the ram 20, it is safe for the operator.

Further, by using the ram drive link of the present invention, the crimp height adjusting structure can be easily used, and the tolerance of the tool head, the terminal pin, etc. is compensated.

As shown in the cutaway view of FIG. 5, the vertical distance d between the first rotatable connection with the crank pin 2 and the second rotatable connection with the link pin 50 is varied. As a result, the crimp height can be easily adjusted. The link pin 50 has an eccentric portion, and the crimp height can be adjusted by rotatably adjusting the link pin 50 as in the method described with reference to FIGS.

As best shown in FIG. 10, the backward moving distance is determined by the crimp height adjusting pin (link pin) 50.
Is a distance D between the shaft of No. 1 and a connection point of a link pin 50 that is bearing-connected to the drive link 40 that is moving backward in the downward direction. While the ram 20 is returning in the downward direction, the drive link 40 is pulled, and the bearing contact between the link pin 50 and the drive link 40 serves as the center shaft 15 of the crank pin 2 when the crank pin 2 rotates. And above the link pin 50 (as shown in FIG. 10) on a virtual line 36 that intersects the central axis 59 of the link pin 50. When the ram 20 is at the top and bottom of its downward stroke, the phantom line 36 is vertical and the bearing contacts are at a point above the link pin 50 (as shown in FIG. 10). In the crimp height link pin 50 of the present invention, the distance D can be easily adjusted as follows.

FIG. 13 shows a crimp height adjusting pin (link pin).
FIG. 50 is an enlarged side view of 50, showing details. The link pin 50 is a shaft having a three-layer structure, the first layer is a first cylindrical portion 51 having a relatively small diameter, the second layer is a second cylindrical eccentric portion 52 having an intermediate diameter, and the third layer is large. It is configured by the third cylindrical portion 53. The third cylindrical portion 53 is arranged concentrically with the first cylindrical portion 53 on the shaft 59 of the link pin 50. A central axis 55 of the second cylindrical eccentric portion 52 is displaced although it is parallel to the axis 59 of the link pin. Thus, the second cylindrical eccentric portion 52 is eccentric with respect to the pin shaft 59. As shown in FIG. 13, the shaft 5 of the second cylindrical eccentric portion 52
5 is the eccentric dimension E, that is, 0.0254 cm (0.01
(Inch) is offset from the pin axis 59.

Referring now to FIGS. 7 and 11. First cylindrical part 5
1 is rotatably seated in the hole 46 of the rear wall 26 of the ram 20 and the third cylindrical portion 53 is rotatably seated in the hole 48 of the front wall 28 of the ram 20. The link pin 50 is arranged in the ram 20. The end surface 66 of the second cylindrical eccentric portion 52 is pressed against the rear wall portion 26 so that the link pin 50 does not come off from the rear wall portion of the ram.
The second cylindrical eccentric portion 52 is fitted in the upper hole 44 of the drive link 40 in the recess 24 of the ram 20. In this way, the drive link 40 is attached to the front and rear walls 2 of the ram.
The link 40 is held between 8 and 26 by the link pin 50, and the link 40 is in bearing contact with the second cylindrical eccentric portion 52 of the link pin 50.

Referring back to FIG. Second cylindrical eccentric part 5
The radial length of 2 is D. More specifically, the distance D
Is the distance between the pin shaft 59 (the shaft on which the first cylindrical portion 51 and the third cylindrical portion 53 are coaxially arranged) and the bearing contact portion between the drive link 40 and the second cylindrical eccentric portion 52. equal.
Since the second cylindrical eccentric part 52 is eccentric with respect to the pin shaft 59, when the link pin 50 rotates about the shaft 59, the distance D changes, and the height of the press when closed and the crimping of the crimp terminal in the press. Height changes. The second cylindrical eccentric portion 52 may change the distance D between the shaft 59 and the circumferential portion of the second cylindrical eccentric portion 52, for example, by rotating the entire link pin 50 and selectively rotating it. Therefore, the maximum descending distance of the ram 20 (and hence the crimp height) can be changed by changing the rotation angle of the link pin 50.

As shown in FIGS. 9 and 11, it is preferable to attach a grease fitting 83 to enable lubrication. The grease fitting 83 is attached to the crimp height adjusting pin (link pin) 50. A central passage 68 is formed inside the pin so that grease can be injected. The grease flows along the central path 68, is discharged from the port 57 into the grease groove 56, and is applied to the circumference of the second cylindrical eccentric portion 52. As a result, the lubricating oil is applied to the upper rotary connection portion of the drive link 40. Part of the grease flows in the flow path 43 (see FIG. 9) in the drive link 40, and the lower hole 42
Is discharged to. As a result, lubrication oil is also supplied to the lower connection portion of the drive pin 40 that is rotatably connected to the crank pin 2, and the lubricating oil is applied from the front side of the pressing device.

A rotating handle 80 is provided as a means for rotating the link pin 50. This handle is attached to the link pin 50 in front of the ram 20. 9 and 11
As shown in FIG.
Is formed, and the stem 54 of the link pin 50 is inserted into this hole. Hole 74 in stem 54 (see FIG. 13)
The rotation handle 80 is fixed to the link pin 50 by engaging the fixing screw 88 with the. With this rotating handle 80,
The eccentric second cylindrical eccentric portion 52 can be selectively positioned in various directions to manually rotate the link pin 50 for adjusting the crimp height. Therefore, it is possible for an operator to reorient the link pin 50 to change the maximum amount of downward displacement (ie, crimp height) that the ram 20 can achieve. The length of the rotary handle 80 from the link pin 50 is long enough to rotate the link pin 50 and lift the ram 20 when the crimp height is set to a desired height. .

The link pin 50 is attached to the ram 20 by a face plate 70 attached to the front wall 28 of the ram.
It is fixed inside. A hole 76 is formed in the face plate 70, and the stem 54 of the link pin 50 projects from this hole. The diameter of the hole 76 is the third cylindrical portion 5
Since the diameter is smaller than the diameter of 3, the pin 50 cannot be pulled out from the front wall portion 28 when the face plate 70 is attached to the front wall portion 28.

The operation of the link pin 50 will be described below. As shown in FIG. 9, the rotary crank pin 2 of the crank shaft projects into the ram 20 and is rotatably engaged in the lower hole 42 of the drive link 40. The second cylindrical eccentric portion 52 of the link pin 50 is inserted into the upper hole 44 of the drive link 40.
Has been inserted. All vertical displacements of the crank pin 2 are directly transmitted to the drive link 40, so that the ram 20 is vertically returned. When the crank pin 2 rotates downward,
The crank pin 2 pulls the drive link 40,
Is pulled downward between the rails 14. When the ram 20 descends and returns in this manner, the crimping operation ends, and the crimping height is determined by the distance of this descending and returning movement. Again, the descending distance is the axis of the link pin 50 and the link pin 50
It is a function of the distance D to the point of bearing contact with 0.

Referring to FIGS. 11 and 12. Rotating handle 8
0 extends vertically from the crimp height adjusting pin (link pin) 50 along the front surface of the ram 20. A detent pin 82 is formed at the end of the handle 80 as a convex detent means for releasably holding the handle 80 in the selected angle direction, and this pin cooperates with a series of recesses 72 formed on the outer periphery of the face plate 70. To work. The recesses 72 are arranged along the arcuate swing path of the detent pin 82.
Spring 86 attached to the end of handle 80
Decenters the detent pin 82 inward in the radial direction and holds the detent pin 82 in any one of the recesses 72.
When the grip portion 64 connected to the detent pin 82 is operated to bias the detent pin outward in the radial direction, the detent pin is separated from the recess, and the handle 80 can be selectively rotated to adjust the crimp height. The cooperation of the detent pin 82 and the recess 72 constitutes means for accurately increasing and adjusting the crimp height and maintaining the selective crimp height until further adjustment is required. Due to the configuration of the second cylindrical eccentric portion 52 of the link pin 50, when the rotation angle of the link pin 50 is constantly increased, the crimp height is increased and changed. It is preferable that the increase / decrease in the crimp height for each detent by the detent means be constant. Therefore, when the detent pin 82 moves between the two adjacent recesses of the recess 72, the increase and decrease in the crimp height is constant, for example, 0.00127 cm (0.0005 inch), so that the arc swing path of the detent pin 82 is changed. The recesses 72 are formed along the surface at irregular intervals.

The handle 80 of the embodiment of the present invention may be attached to the link pin 50 so as to extend in a direction deviated at an acute angle with respect to the maximum eccentricity of the second cylindrical eccentric portion 52. As shown in FIG. 12, when the handle 80 is arranged at the intermediate position of the arcuate swing path of the handle 80, the intermediate value between the maximum value and the minimum value in the adjustable range of the crimp height of the press device becomes small. Thus, it is preferable to attach the handle 80 to the link pin 50. As can be seen from FIG. 12, the recess 72 is formed over the range of about 130 ° of the arcuate swing path of the handle 80. If desired, the arcuate wobble path can be extended to the 180 ° range. This makes it possible to utilize the entire range of the crimping adjustment height obtained from the link pin 50 having the fixed eccentric dimension E.

FIG. 15 shows another embodiment in which the link pin 50 is rotated to adjust the crimp height. A first rotary gear 90 is attached to the crimp height adjusting pin (link pin) 50 on the outer side of the ram 20 instead of the manual rotary handle 80. A pair of integral fixed brackets 92 is provided on the ram 20 near the first rotary gear 90. The first rotating gear 90 is fixed by the fixed bracket 92.
The first worm gear 93 of the shaft 94 is engaged and held. The shaft 94 extends in the transverse direction of the link pin 50, and further extends above the fixing bracket 92. A second rotary gear 96 is fixed to the upper end of the shaft 94. A drive motor 98 is seated inside the terminal crimping press, and a second worm gear 97 is mounted on this motor and is engaged with the second rotary gear 96. The motor 98 can be configured by a conventional motor including a stepping motor, and this motor can adjust the angle of the link pin 50. When the motor 98 is operated, the shaft 94 rotates, which causes the first rotary gear 90 and the link pin 50 to rotate. Figure 15
With the use of this embodiment, the crimp height can be automatically adjusted.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional automated terminal crimping device.

FIG. 2 is a side view of a conventional automated terminal crimping device.

FIG. 3 is an exploded perspective view of a ram drive mechanism of the present invention.

FIG. 4 is a side sectional view of the ram drive mechanism of FIG.

5 is a front cutaway view of the ram drive mechanism of FIGS. 3 and 4. FIG.

FIG. 6 is a graph of a ram displacement amount and a crankshaft rotation amount of a conventional crimping press having a push link and a crimping press of the present invention having a pull-link ram driving mechanism.

FIG. 7 is an exploded perspective view of a crimp height adjusting pin (link pin) of the present invention incorporated in the ram drive mechanism of FIGS. 3-6.

8 is a rear view of the ram of FIG. 7.

9 is a side sectional view of the ram drive mechanism with the crimp height adjustment pin (link pin) of FIG. 7.

10 is a front cutaway view of the ram drive mechanism with the crimp height adjustment pin (link pin) of FIG. 7.

FIG. 11 is a top plan view of the ram and crimp height adjustment pin (link pin) of FIG. 7-10.

FIG. 12 is a front view of the ram and the crimp height adjusting pin (link pin) of FIG. 7-10.

FIG. 13 is an enlarged side view of a crimp height adjusting pin (link pin) of the present invention.

FIG. 14 is an enlarged perspective view of a crimp height adjusting pin (link pin) of the present invention.

FIG. 15 is a partially cutaway perspective view of an automatic terminal crimping device incorporating another motor-driven crimping height adjusting mechanism of the present invention.

[Explanation of symbols]

 2 Offset Crank Pin 5 Crank Shaft Rotating Means 8 Terminal Applicator 10 Crank Shaft 20 Ram 24 Recess 26 Back Side Wall 28 Front Side Wall 40 Drive Link 42 Lower Hole (First Hole) 44 Upper Hole (Second Hole) 46, 48 Insertion hole 50 Link pin 51 First cylindrical portion 52 Second cylindrical eccentric portion 53 Third cylindrical portion

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Kenneth Foster Fork United States of America Pennsylvania 17112 Harrisburg Fresno Drive 320 (72) Inventor David Anthony Scotech Pennsylvania United States 17109 Harrisburg Ezer Street 5522

Claims (2)

[Claims] 1. A terminal crimping device having a driving member offset to one end of a crankshaft that is rotationally driven and a ram that is repeatedly moved to a terminal crimping region by the driving member, wherein a first hole for axially supporting the driving member and A terminal crimping device comprising a drive link having a second hole aligned with a shaft hole of the ram and axially supporting the ram. 2. A terminal crimping device having a driving member offset to one end of a crankshaft that is rotationally driven and a ram that is repeatedly moved to a terminal crimping region by the driving member, wherein a first hole for axially supporting the driving member and A drive link having a second hole separated from the first hole; and a link pin inserted into the second hole of the drive link and a shaft hole of the ram and having an eccentric portion formed therein. The terminal crimping device is characterized in that the terminal crimping height is finely adjusted by.