JPH09251887A - Terminal crimper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To precisely adjust a crimp height with ease by disposing a largediameter dial in a connecting portion of a press ram, and adjusting a lower dead center of the connecting portion of the press ram based on a scale of the dial. SOLUTION: A large-diameter dial 28 is disposed in a connecting portion of a press ram 22, thereby adjusting a lower dead center of the connecting portion of the press ram 22 based on a scale of the dial 28. When the dial 28 is turned in one direction, one side wall 40 defining a cutout 39 abuts against an abutting plate 31, so that the dial 28 can be restrained from being turned further in that direction. When the dial 28 is turned on the other direction, the other side wall 41 defining the cutout 39 abuts against the abutting plate 31. Consequently, a turning angle of the dial 28 is made to accord with a predetermined angle 43. Subsequently, surfaces forming the side walls 40, 41 are inclined relatively to each other by an angle according to the predetermined angle 43, so that the abutting plate 31 is constantly brought into surface-contact with the side wall 40 or 41. Consequently, it is possible to prevent any damage or deterioration of the abutting plate 31 and the dial 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a terminal crimping machine used when crimping a terminal fitting to an end of an electric wire. ) Is related to the improvement of the bottom dead center adjusting mechanism.

[0002]

2. Description of the Related Art Conventionally, various devices (terminal crimping machines) for crimping a terminal fitting to an end of an electric wire have been provided, but these devices generally have the following structures. The terminal crimping machine has a crimping machine main body and an applicator that can be attached to and detached from the crimping machine main body. The applicator has a fixed lower mold part and fixed upper mold part, and is configured as a unit for crimping the terminal fitting to the electric wire. The specifications of this applicator are determined depending on the types of the terminal fittings and electric wires, and the specifications corresponding to the types of terminal fittings and electric wires to be crimped are attached to the crimping machine main body.
On the other hand, the crimping machine main body is provided with a press ram that is vertically reciprocated by a motor or the like. The lower end of the press ram and the upper end of the upper mold part of the applicator are connected to each other, whereby the upper mold part is vertically driven by the press ram.

In order to crimp the terminal fitting to the electric wire, it is necessary to strictly adhere to a predetermined crimp height. For this reason, the position of the bottom dead center of the upper die part, that is, the distance from the lower die part at the bottom dead center of the upper die part is important. To adjust this distance, the position of the bottom dead center of the lower end of the press ram (the connecting position between the lower end of the press ram and the upper end of the upper part of the applicator) can be adjusted on the press ram side of the crimping machine body. A dead point adjustment mechanism is provided.

This bottom dead center adjusting mechanism is as shown in FIG. Referring to the figure, reference numeral 1 indicates a crimping machine main body. Reference numeral 2 is a stage on which an applicator (not shown) is placed and fixed. Further, reference numeral 3 indicates a press ram which is reciprocally moved up and down (in the direction of the white arrow), and reference numeral 4 indicates a lower end portion of the press ram 3 equipped with the bottom dead center adjusting mechanism 5. .

Then, a predetermined applicator is mounted on the stage 2, and the upper end of the upper die of the applicator and the press ram 3 are attached.
After connecting with the lower end part 4 of the, the height position of the bottom dead center of the upper die part of the applicator is adjusted by the bottom dead center adjusting mechanism 5.
In the adjustment by the bottom dead center adjusting mechanism 5, first, the lock lever 6 that regulates the operation of the bottom dead center adjusting mechanism 5 is rotated to the left (the position shown in FIG. 6) to release the lock. Then, the insertion hole 9 provided in the adjusting knob 7 of the bottom dead center adjusting mechanism 5
Insert a dedicated jig into and turn the adjusting knob 7 to the right or left using this jig. As a result, the position of the lower end portion 4 of the press ram 3 is changed in the vertical direction to adjust the bottom dead center. Reference numeral 8 is a reference line engraved around the adjustment dial 7. The reference line 8 is provided as a temporary reference in order to recognize how much the adjustment dial 7 is turned.

[0006]

In crimping work, the accuracy of the crimp height after crimping is an extremely important factor that determines the quality of the crimped state, so the adjustment knob 7
Position of the lower end 4 of the press ram 3 (bottom dead center)
Must be precisely adjusted to the specifications of the applicator.

However, since the adjusting knob 7 is simply engraved with the reference line 8 around it, the reference line 8 cannot be read, and it is clear how much the adjusting knob 7 is turned. I can't recognize. Further, if the adjustment knob 7 is rotated once during the adjustment and rotated once, it may not be known which line of the reference line 8 is used as the reference.

In the conventional terminal crimping machine, the above-mentioned inconveniences occur, and therefore, it is very difficult to accurately adjust the bottom dead center of the press ram 3 by the adjusting knob 7. Further, conventionally, the adjusting knob 7 cannot be easily turned by hand, and a dedicated jig as described above has to be used, and the work of adjusting the bottom dead center has been troublesome for the operator.

Therefore, the main object of the present invention is to adjust the bottom dead center of the press ram easily and accurately,
An object of the present invention is to provide a terminal crimping machine capable of easily adjusting the crimp height.

[0010]

In order to achieve the object of the present invention, a terminal crimping machine according to claim 1 comprises a lower die and an upper die provided on a shank slidable up and down with respect to the lower die. Depending on the applicator that crimps the terminal fitting to the wire,
A press ram that has a connecting part that can be connected to the shank and that can vertically drive the shank by reciprocating vertically, and by rotating the connecting part of the press ram, the connecting part of the connecting part can be rotated according to the rotation angle. In a terminal crimping machine equipped with a screw structure for adjusting the bottom dead center, a dial having a diameter larger than that of the connecting portion of the press ram is provided at the connecting portion of the press ram, and the dial is a scale for displaying the rotation angle of the connecting portion of the press ram. It is characterized by having.

According to this structure, by rotating the dial, the connecting portion of the press ram can be rotated, and the bottom dead center of the connecting portion of the press ram can be adjusted via the screw mechanism. Moreover, the rotation angle of the connecting portion can be displayed on the scale of the dial. Accordingly, the operator can accurately recognize how much the bottom dead center of the connecting portion is adjusted, and the position of the bottom dead center can be accurately positioned. Further, since the dial is formed with a diameter larger than that of the connecting portion, it can be easily turned by hand, and the scale accuracy is improved by taking measures such as carving the scale on the outer peripheral edge of the dial. It is possible to contribute to more accurate positioning of the bottom dead center.

In order to achieve the object of the present invention, a terminal crimping machine according to a second aspect is the terminal crimping machine according to the first aspect, further comprising a pointer for indicating the scale of the dial. To do. According to this configuration, the same operation as the first aspect of the invention is achieved. In addition, the scale can be pointed by the pointer, and the scale can be read accurately. As a result, more accurate positioning of the bottom dead center of the connecting portion can be realized.

In order to achieve the object of the present invention, the terminal crimping machine according to claim 3 is the terminal crimping machine according to claim 1 or 2, wherein the adjustment amount of the bottom dead center of the connecting portion is limited within a certain range. It is characterized by further comprising an adjusting amount limiting means for controlling. According to this configuration, the same operation as the invention according to claim 1 or 2 is achieved. In addition, the adjustment amount limiting means can limit the adjustment amount of the bottom dead center of the connecting portion within a certain range. As a result, it is possible to avoid the inconvenience that the bottom dead center of the connecting portion is moved too much during adjustment, and it becomes difficult to adjust the bottom dead center of the connecting portion to a predetermined position. it can.

In order to achieve the object of the present invention, the terminal crimping machine according to a fourth aspect is the terminal crimping machine according to the third aspect, wherein the adjustment amount limiting means is brought into contact with a predetermined portion of the dial to rotate the dial. It is characterized in that it includes an abutting member that regulates. According to this configuration, claim 3
The same effect as that of the invention according to the first aspect is exhibited. In addition, in the invention according to this aspect, the adjustment amount of the bottom dead center of the connecting portion can be limited within a certain range by the abutting member contacting the predetermined portion of the dial. As a result, it is possible to avoid the inconvenience that the bottom dead center of the connecting portion is moved too much during adjustment, and it becomes difficult to adjust the bottom dead center of the connecting portion to a predetermined position. it can. Moreover, the structure is very simple because the contact member only contacts the predetermined portion of the dial.

[0015]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a schematic configuration of a terminal crimping machine according to an embodiment of the present invention. Referring to the figure, the terminal crimping machine 10 includes a terminal fitting (not shown) supplied along the direction of the white arrow and an electric wire (not shown) supplied along the hatched arrow. It is for crimping to the end. Terminal crimping machine 1
Reference numeral 0 has a crimping machine body 11 and an applicator 12 provided therein.

The applicator 12 is a known one and is configured as a unit for crimping a terminal fitting and an electric wire. A crimp having a specification corresponding to the type of the terminal fitting and the electric wire to be crimped is crimped. It is attached to the machine body 11. That is, the applicator 12 is the base 1
3, a lower mold 14 fixed to the base 13, a shank 15 supported by the base 13 in a vertically slidable manner with respect to the lower mold 14, and an upper mold 16 provided at the lower end of the shank 15, It has a terminal supply part 17 for intermittently supplying the terminal fitting between the lower mold 14 and the upper mold 16.

The terminal supply section 17 has a swing arm 19 rotatably attached to a support frame 18 formed on the base 13, and a feed claw 20 provided at the tip of the swing arm 19. There is. The terminal fittings are sequentially fed and supplied from a terminal reel (not shown).
When the swing arm 19 swings, the feed claw 20 intermittently feeds the terminal fitting between the molds 14 and 16.

On the other hand, the crimping machine main body 11 is composed of the applicator 1
A mounting table 21 for mounting and fixing 2 is provided, and a press ram 22 that is vertically reciprocated by a predetermined prime mover is provided above the mounting table 21. A connecting portion 23 formed in a predetermined shape on the press ram 22 (see FIG. 2)
Is formed, and the press ram 22 and the shank 15 of the applicator 12 are connected via this. That is, the upper die 1 is moved by the press ram 22 which is moved up and down.
6 is contacted with and separated from the lower mold 14, and the terminal fittings are crimped to the electric wire by both molds 16 and 14.

The connecting portion 23 is equipped with a bottom dead center adjusting mechanism 24 (see FIG. 2) for adjusting the bottom dead center of the connecting portion 23. By this mechanism 24, the connecting portion 2
It is possible to adjust the bottom dead center of No. 3 to a position corresponding to the specifications of the applicator 12 to be mounted, and to adjust the crimp height when crimping the terminal fitting to the electric wire. The feature of the present embodiment is that the bottom dead center adjusting mechanism 24 is provided with a display mechanism 25 that displays the adjustment amount of the bottom dead center of the connecting portion 23.
The point is that the position of the bottom dead center can be easily and accurately positioned at a predetermined position.

Referring to FIG. 2, the bottom dead center adjusting mechanism 24 is
It has a screw mechanism (not shown) and an adjusting knob 26 for driving the screw mechanism. As shown in the figure, the adjusting knob 26 is formed in a short cylindrical shape, and a plurality of holes 27 having a predetermined depth are provided around the adjustment knob 26 at predetermined intervals in the circumferential direction. In addition, this hole 27
As in the prior art, when the adjustment knob 27 is directly operated, a dedicated jig for turning the adjustment knob 27 can be inserted.

By rotating the adjusting knob 26 to the right or to the left, the connecting portion 2 is connected through the screw mechanism.
3 can be moved up and down.
In FIG. 1, reference numeral 54 is the adjustment knob 2
The lock lever of No. 6 is shown. In the state of FIG. 1, the lock lever 54 locks the adjustment knob 26,
Although the adjusting knob 26 cannot be rotated, the lock lever 54 can be unlocked by rotating the lock lever 54 to the left from the state of FIG. 1, and the adjusting knob 26 can be rotated. There is. Further, in FIG. 2, the lower end of the connecting portion 23 is formed on a disc,
It can be engaged with the upper end of the shank 15 of the applicator 12.

Next, the display mechanism 2 which is a feature of this embodiment
5 will be described in detail. In the present embodiment, the display mechanism 25 is for displaying the adjustment amount of the bottom dead center of the connecting portion 23 as described above, and in addition to the bottom dead center adjustment mechanism 24.
This is for operating (turning) the adjusting knob 26. The display mechanism 25 has a dial 28 attached to the adjusting knob 26 and a pointer 30 indicating a predetermined scale 35, 36 engraved on the dial 28.

FIG. 3 is a view of the dial 28 as seen from above, and FIG. 4 is a view of the dial 28 as seen from the side.
3 and 4, the dial 28 is a circular one having a predetermined outer diameter (larger diameter than the adjusting knob 26), and is fixed to the adjusting knob 26 in a horizontal state. Therefore, the adjusting knob 26 can be rotated by manually operating (turning) the dial 28, whereby the bottom dead center of the connecting portion 23 can be adjusted.

A fitting hole 32 having a predetermined inner diameter is formed at the center of the dial 28. Referring to FIG.
The inner diameter of the fitting hole 32 corresponds to the outer diameter of the adjusting knob 26, so that the dial 28 and the adjusting knob 26 can be closely fitted to each other by a predetermined fitting tolerance. Further, referring to FIG. 3, screw insertion holes 33 are formed symmetrically in four directions on the circumference of a pitch circle larger than the inner diameter of the fitting hole 32. Further, on the upper surface of the dial 28, the scales 35, 36 along the peripheral edge 34
Is engraved. The scale 35 is composed of a thick line that divides the dial 28 into 15 equal parts along the circumferential direction, and a number for recognizing the rotation angle of the dial 28 is attached to the thick line. On the other hand, the scale 36 is a thin line that divides the thick lines adjacent to each other among the thick lines forming the scale 35 into five equal parts along the circumferential direction. Therefore, the thin line divides the dial 28 into 75 equal parts along the circumferential direction.

Further, an engagement groove 37 is formed on the upper surface of the dial 28. The engagement groove 37 is formed on the scale 3
5 and 36, close to the scales 35 and 36,
It is provided concentrically with the fitting hole 32. In addition, the engagement groove 37
Has a predetermined groove width and depth (see FIG. 4).
Furthermore, the engagement groove 37 is formed in an arc shape, and its ends are not continuous.

A predetermined notch 39 is formed on the peripheral surface 38 of the dial 28. The notch 39 is cut from the peripheral surface 38 of the dial 28 toward the center and is formed along the circumferential direction of the dial 28. That is,
The notch 39 is provided on one side wall 40 and the other side wall 4.
1 and a bottom portion 42 that extends along the circumferential direction of the dial 28 and that connects these side wall portions 40 and 41.

In this embodiment, the notch 39 is formed in a range corresponding to a predetermined central angle with respect to the center of the dial 28. That is, the center C of the dial 28 and the bottom 4
The angle 43 formed between the two ends corresponds to the predetermined central angle. Further, the one side wall portion 40 is formed along the vertical direction of the paper surface in FIG. Further, the other side wall portion 41 is formed on the left side with respect to the vertical direction of the paper surface in FIG.

Referring again to FIG. 2, the dial 28 is fixed to the adjusting knob 26 via the mounting bracket 44. The mounting bracket 44 is annular, and its inner diameter is set to the same size as the inner diameter of the fitting hole 32 of the dial 28. That is, the mounting bracket 44 is adapted to fit snugly with the adjusting knob 26 by a predetermined fitting tolerance. On the peripheral surface of the mounting bracket 44,
A plurality of screw holes 45 penetrating from the outside to the inside are formed. Further, four screw holes 46 are formed on the upper surface of the mounting bracket 44. The screw holes 46 are provided symmetrically in four directions, and the screw insertion holes 33 formed in the dial 28 are formed.
They are arranged at the same pitch as.

That is, the dial 28 is fastened to the mounting bracket 44 with the screw 47, and the dial 28 and the mounting bracket 44 fastened to each other are fitted to the adjusting knob 26 and fixed using the set bolt 48. Has been done. The set bolt 48 penetrates the screw hole 45 and then enters the hole 27 of the adjusting knob 26. In this way, the dial 28 is adjusted by the adjustment knob 2
6 attached.

Next, the pointer 30 is fixed to the crimping machine body 11 side via the bracket 49 (see FIG. 1). As shown in FIG. 2, the bracket 49 is made of a rectangular plate-shaped member, and a predetermined portion 50 is cut out in order to avoid interference with the press ram 22 when mounting. Pointer 30
Has a portion 51 along the bracket 49 and a protruding piece 52 for indicating the scales 35 and 36 of the dial 28, and is fastened to a predetermined portion of the crimping machine main body 11 together with the bracket 49 using a screw 53. Has been done. In the present embodiment, the pointer 30 is made of a thin plate member, but the pointer 30 is not limited to this, and the pointer 30 can be made by bending a rod-shaped member or other means.

Next, in the present embodiment, the adjustment knob 26
The mechanism for restricting the adjustment amount of the bottom dead center of the connecting portion 23 to within a certain range is provided by allowing the above operation, that is, the operation of the dial 28 only within a predetermined range. This mechanism is configured to include a contact plate 31 (see FIG. 1) attached to the support frame 18 that supports the terminal supply unit 17, and a cutout portion 39 (see FIG. 3) formed in the dial 28. .

FIG. 5 is an enlarged perspective view of an essential part showing a portion to which the contact plate 31 is attached in FIG. 1, and shows a mechanism for limiting the adjustment amount of the bottom dead center of the connecting portion 23 within a certain range. It is shown. Depending on the applicator mounted on the crimping machine main body 11, it may not be necessary to move the lower end of the connecting portion 23 so much for adjustment. In such a case, it is expected that the adjustment work will be time-consuming if an unnecessarily wide range of adjustment is provided. Therefore, for the applicator (the applicator 12 according to the present embodiment) that does not need to move the lower end of the connecting portion 23 so much, the adjustment amount of the bottom dead center of the connecting portion 23 is within a certain range in advance. It is preferable to limit it to. From this point of view, the present embodiment is equipped with a mechanism for limiting the adjustment amount within a certain range.

The mechanism for limiting the adjustment amount of the bottom dead center of the connecting portion 23 within a certain range has a very simple structure in this embodiment. That is, this structure, as shown in FIG.
A rectangular contact plate 31 is inserted into a cutout portion 39 of the dial 28 attached to the press ram 22 side.
The contact plate 31 is fastened to the support frame 18 with the screw 54, but may be fixed to the crimping machine body 11 side.

When the dial 28 is turned to one side in order to adjust the bottom dead center of the connecting portion 23, one side wall portion 40 constituting the cutout portion 39 and the contact plate 31 come into contact with each other, and the dial 28 is no longer provided. Cannot be turned to one side. On the other hand, when the dial 28 is turned to the other side, the other side wall portion 41 forming the cutout portion 39 comes into contact with the contact plate 31, and the dial 28 cannot be turned to the other side any more. The range (angle) in which the dial 28 can be turned corresponds to the predetermined angle 43 shown in FIG.

As described with reference to FIG. 3, the surface forming one side wall portion 40 and the surface forming the other side wall portion 41 are relative to each other by an angle corresponding to the predetermined angle 43. Therefore, even if the dial 28 is rotated with respect to the fixed contact plate 31, the contact plate 31 and one side wall portion 40 or the other side wall portion 41 are always in surface contact with each other. Has become. Thereby, damage and deterioration of the contact plate 31 and the dial 28 can be suppressed.

According to the above terminal crimping machine 10, the following operational effects are exhibited. Applicator 1 on crimping machine body 11
When the 2 is mounted, the display mechanism 25 can display the adjustment amount of the bottom dead center of the connecting portion 23 of the press ram 22. With this, the operator can always recognize how much the bottom dead center of the connecting portion 23 has been moved, so that the position of the bottom dead center can be accurately positioned at a predetermined position. As a result, the crimp height can be adjusted easily and accurately.

In particular, the terminal crimping machine 10 according to this embodiment has the following effects in addition to the above effects.
First, the dial 28 is rotated to rotate the adjusting knob 26, and thereby the bottom dead center of the connecting portion 23 can be adjusted via the screw mechanism. For example, assume that the screw mechanism has a screw pitch of 1.5 mm.
Since the graduation line (thin line) of the graduation 36 divides the dial 28 into 75 equal parts in the radial direction, the bottom dead center can be adjusted in 0.2 mm intervals by this graduation line.

As described above, since the scales 35 and 36 can accurately display the adjustment amount of the bottom dead center of the connecting portion 23, how much the operator has adjusted the bottom dead center of the connecting portion 23. Can be accurately recognized. Further, since the dial 28 is formed with a diameter larger than that of the connecting portion 23, it is very easy to turn by hand without using a jig or the like, and the scales 35 and 36 are engraved on the edge portion 34 of the dial 28. The accuracy of the graduations 35 and 36 is high because it is visible. Therefore, the connecting portion 23
The position of the bottom dead center can be more easily and accurately positioned, and more accurate crimp height adjustment can be performed.

Further, since the scale line can be indicated by the pointer 30, the scales 35 and 36 can be read more accurately. As a result, there is an advantage that the crimp height can be adjusted more accurately. further,
Since the adjustment amount of the bottom dead center can be limited within a certain range, the bottom dead center of the connecting part 23 can be adjusted to a predetermined position by moving the lower end of the connecting part 23 too much. It is possible to avoid the inconvenience that it becomes difficult. As a result, the efficiency of the bottom dead center adjustment work can be improved, and the crimp height can be adjusted quickly.

In addition, since the contact plate 31 is brought into contact with a predetermined portion of the dial 28 in order to limit the adjustment amount within a certain range, the structure is very simple. It is possible to suppress an increase in the cost of the terminal crimping machine as a whole. The present invention is not limited to the above embodiment, and the following modified examples are possible.

Referring to FIGS. 2 and 3, dial 28
An engaging groove 37 is provided in the. This relates to a modification of the mechanism that limits the adjustment amount within a certain range.
That is, in the above embodiment, the contact plate 31 and the cutout portion 39 are provided.
Although the allowable rotation angle of the dial 28 is determined by and, in the present modification, the allowable rotation angle of the dial 28 is determined by the engagement groove 37 and the predetermined engaging portion that engages with the engagement groove 37. It is a thing.

With reference to FIGS. 1 and 2, the above-mentioned engaging portion can be constructed, for example, by downwardly projecting a rod-like engaging protrusion on a bracket 49 for attaching the pointer 30. In addition, such an engaging protrusion,
It can be provided on the pointer 30 or directly on the crimping machine body 11. The engagement protrusion thus configured has a shape that can be inserted into the engagement groove 37, and can freely slide along the engagement groove 37.

According to the present modification, the rotation angle of the dial 28 can be allowed within a predetermined range, as in the above embodiment, and the same effect as that of the above embodiment can be obtained. Particularly, in this modification, since the engagement groove 37 is formed so as to substantially circulate the dial 28, when the applicator that needs to be adjusted by moving the lower end of the coupling portion 23 to a large extent is mounted. It is preferable to apply to

Besides, various design changes can be made within the scope of the present invention.

[0045]

According to the invention of claim 1, the bottom dead center of the connecting portion can be adjusted by rotating the dial and reading the scale. As a result, the crimp height can be adjusted easily and accurately according to the specifications of the applicator to be installed. Moreover, a large-diameter dial is easy to operate, and it is easy to improve the accuracy of the scale. Therefore, the crimp height can be adjusted more easily and accurately. Further, the structure is extremely simple, which is advantageous in terms of cost.

According to the invention of claim 2, the same effect as that of the invention of claim 1 can be obtained. In addition, since the scale can be read accurately with the pointer, the positioning of the bottom dead center of the connecting portion can be realized more accurately, and as a result, the crimp height can be adjusted even more easily and accurately. According to the invention of claim 3, claim 1 or 2
The same effects as those of the invention according to are obtained. In addition, since the adjustment amount limiting means limits the adjustment amount of the bottom dead center of the connecting portion within a certain range, it is possible to quickly adjust the position of the bottom dead center of the connecting portion to a predetermined position. it can. As a result, the efficiency of the bottom dead center adjustment work of the press ram can be improved, and the crimp height can be adjusted quickly.

According to the invention of claim 4, the same effect as that of the invention of claim 3 can be obtained. In addition, since the adjustment amount of the bottom dead center of the connecting portion can be limited within a certain range by bringing the contact member into contact with the predetermined portion of the dial, the position of the bottom dead center of the connecting portion is predetermined. It can be quickly adjusted to the assigned position. As a result, the efficiency of the bottom dead center adjustment work of the press ram can be improved. Moreover, since an extremely simple structure in which the contact member is brought into contact with the dial is adopted, the mechanism of the adjustment amount limiting means can be simplified, and an increase in the cost of the entire terminal crimping machine can be suppressed.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a terminal crimping machine according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of essential parts showing the structure of a bottom dead center adjusting mechanism.

FIG. 3 is a plan view of a dial.

FIG. 4 is a side view of a dial.

FIG. 5 is an enlarged perspective view of essential parts showing a mechanism for limiting the adjustment amount to a certain range.

FIG. 6 is a perspective view of a main part of a conventional terminal crimping machine.

[Explanation of symbols]

 10 terminal crimping machine 11 crimping machine main body 12 applicator 14 lower die 15 shank 16 upper die 22 press ram 23 connecting portion 24 bottom dead center adjusting mechanism 25 display mechanism 26 adjusting knob 28 dial 30 pointer 31 contact plate 35 scale 36 scale 37 Engagement groove 39 Notch portion 40 One side wall portion 41 Other side wall portion 44 Mounting bracket 48 Set bolt

Claims (4)

[Claims] 1. An applicator for crimping a terminal fitting to an electric wire by a lower die and an upper die provided on a shank slidable up and down with respect to the lower die, and a connecting portion capable of connecting with the shank. A press ram that can drive the shank up and down by reciprocating up and down, and a screw structure that rotates the connecting part of the press ram to adjust the bottom dead center of the connecting part according to the rotation angle. In the terminal crimping machine, a dial having a diameter larger than that of the connecting portion of the press ram is provided, and the dial has a scale indicating a rotation angle of the connecting portion of the press ram. Terminal crimping machine. 2. The terminal crimping machine according to claim 1, further comprising a pointer for pointing the dial scale. 3. The terminal crimping machine according to claim 1 or 2, further comprising adjustment amount limiting means for limiting the adjustment amount of the bottom dead center of the connecting portion within a predetermined range. Machine. 4. The terminal crimping machine according to claim 3, wherein the adjustment amount limiting means includes an abutting member that abuts on a predetermined portion of the dial and restricts rotation of the dial. apparatus.