JP2008016328A - Crimping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crimping device that has satisfactory balance, even when the crimping device becomes large, an air cylinder becomes large and its weight is increased. <P>SOLUTION: The crimping device is provided with a fixed receiving part 1, a moving crimping body 2, a linking mechanism 3 connected to the upper part of the moving crimping body 2, the air cylinder 4 for actuating the linking mechanism 3, a pair of frames 24 installed erect so as to pinch both sides of the link mechanism 3, and a frame base 21 for supporting the lower part of the pair of frames 24. An air cylinder mounting region S, for mounting the air cylinder 4, is formed at a downward position of the linking mechanism 3 in the frames 24, and the frames 24, the air cylinder 4, the fixed receiving part 1 and the moving crimping body 2 are arranged above one frame base 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a crimping device, mainly a crimping device for crimping and attaching a connection terminal to one end of an electric wire.

As such a crimping device, as shown in Japanese Patent Laid-Open Nos. 10-3976 and 10-134927, the cam shaft is rotated by using an electric motor as a power source, and the cam mechanism rotates the cam shaft. Converted to a linear reciprocating motion of the moving crimping body, the terminal is crimped and connected to the electric wire with the moving crimping body and the fixed receiving part, and the camshaft's rotational movement is swung by the cam mechanism. A hand-held terminal crimping tool having a configuration that sequentially converts terminals into motion is known.
Japanese Patent Laid-Open No. 10-3976 JP-A-10-134927

However, since these conventional technologies are configured to directly convert the rotational movement of the cam shaft into the linear reciprocating movement of the movable crimping body via the cam, a force sufficient to crimp the terminal to the wire is movable and crimped. In order to give it to the body, a large amount of energy is required for the rotation of the camshaft. In this conventional example, a part of the energy of the rotational movement of the camshaft is used to feed the terminal to the crimping position. There is room for improvement from the viewpoint of energy efficiency because it is used after being converted into the swing motion of the arm.
Therefore, the present invention provides a crimping apparatus that can crimp a terminal to an electric wire efficiently with less energy while being easy to operate.

Also, as the thickness of the wires and terminals to be crimped increases, the force required for crimping increases, so the power source for crimping itself must also be increased in size and weight. How to attach to the device became a problem.
Therefore, another object of the present invention is to provide a crimping apparatus that can mount a power source that is increased in size and weight in a compact and well-balanced manner.

  The configuration of the present invention taken to solve the above problems will be described using the reference numerals used in the drawings showing the embodiments. The crimping apparatus of the present invention includes a fixed receiving portion 1 and an upper portion of the fixed receiving portion 1. A movable pressure-bonding body 2 that is movably attached to the fixed receiving portion 1 so as to be closely spaced in the vertical direction, a link mechanism 3 connected to an upper portion of the movable pressure-bonding body 2, and a link mechanism 3 A pair of frames 24 that support the support shafts 12a and 14a included in the link mechanism 3 and that support the lower portions of the pair of frames 24. The frame 24 has an air cylinder mounting region S for mounting the air cylinder 4 at a position below the link mechanism 3, and the frame 24 is fixed to the air cylinder 4. Part 1 and the mobile compression member 2 is obtained by a structure which is arranged above the single-frame base 21.

  According to the crimping apparatus of the present invention, the fixed receiving portion 1, the movable crimping body 2, the link mechanism 3, the air cylinder 4, and the link mechanism 3 are supported so as to sandwich both sides of the link mechanism 3. The frame 24 includes a pair of frames 24 and a frame base 21 that supports lower portions of the pair of frames 24, and the frame 24 has an air cylinder attachment region S for attaching the air cylinder 4 at a position below the link mechanism 3. Since the frame 24, the air cylinder 4, the fixed receiving portion 1, and the movable pressure-bonding body 2 are arranged above one frame base 21, the air cylinder 4 that is particularly heavy and the frame on which the link mechanism 3 is supported Since all the heavy objects including 24 are arranged on the frame base 21 and the center of gravity of each part is present on the frame base, it is compact and well-balanced. It can be. In particular, even when a large and heavy air cylinder is used in order to obtain a high-pressure crimping device, the air cylinder can be stably arranged so that the center of gravity of the air cylinder is on the frame base.

  In carrying out the present invention, the link mechanism 3 includes a first link 11 having one end connected to the upper portion of the movable pressure-bonding body 2, and one end near the support shaft 12 a that is supported by the frame 24 by the support shaft 12 a. A second link 12 that is swingably connected to the other end of the first link 11, a third link 13 that is swingably connected to the other end of the second link 12, and a third link 13 The fourth link 14 whose one end is pivotably connected to the end and the other end is pivotally supported on the frame 24 by the support shaft 14a, and the other end of the third link 13 and one end of the fourth link 14 are connected. In addition, the fifth link 15 may be configured such that one end thereof is swingably connected and the other end is operated by the air cylinder 4.

  As a result, the fixed receiving portion 1, the movable pressure-bonding body 2 that is located above the fixed receiving portion 1 and is movably attached to the fixed receiving portion 1 so as to be closely spaced in the vertical direction, and the movable pressing portion The link mechanism 3 connected to the upper part of the body 2 and the air cylinder 4 that operates the link mechanism 3 are provided. The link mechanism 3 is configured to have a toggle mechanism and a lever mechanism. The power from the air cylinder 4 can be efficiently amplified and transmitted to the movable pressure-bonding body 2, and even if the force from the air cylinder 4 is small, the terminal can be crimped to the electric wire, which can contribute to energy saving. .

Further, the air cylinder 4 may be attached so as to protrude from the inside of the pair of frames 24 to both outsides in the air cylinder attachment region S.
Thereby, compared with the fixed receiving part 1, the movable crimping | compression-bonding body 2, and the link mechanism 3, even if it is a case where the external shape of the air cylinder 4 becomes wide inevitably, without receiving the restrictions of the external shape which is wide, The air cylinder 4 can be disposed above the frame base 21 with the center of gravity left between the frames 24. Further, since it is not necessary to determine the shape of the frame 24 and the arrangement on the frame base 21 in accordance with the outer shape of the air cylinder 4, the entire apparatus can be made compact.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a crimping apparatus showing an embodiment of the present invention, FIG. 2 is a perspective view showing the internal structure of FIG. 1, FIG. 3 is a front view showing the internal structure of the crimping apparatus of FIG. FIG. 2 is a plan view of the crimping apparatus of FIG. 1. FIG. 5 is a sectional view of the mouthpiece unit, and FIG. 6 is a side view of the foot unit.

As shown in FIGS. 1 to 3, the crimping apparatus has rubber feet 22 for vibration isolation attached to the four corners of the lower surface of the rectangular frame base 21. A pair of plate-like frames 24 arranged in parallel along the longitudinal direction (longitudinal direction) of the frame base 21 are vertically erected on the upper surface of the frame base 21 and the lower part thereof is fixed with screws. Like to do. The distance between the two frames 24 is set such that a link mechanism 3 described later can operate in the space between the frames 24.
The frame base 21 has a lateral width that is a direction perpendicular to the longitudinal direction slightly larger than a lateral width of an air cylinder 4 to be described later, so that the lateral balance is not easily lost. It is.

  The plate-like frame 24 is cut into a position where a later-described tooth unit 31 is mounted (lower right side in FIGS. 1 and 2) and a position where the air cylinder 4 is mounted (lower center side in FIGS. 1 and 2). It is formed in a substantially rectangular shape that is missing. A cover 25 is attached along the outer periphery of the frame 24 excluding a portion where the tooth mouth unit 31 is mounted.

  As described above, a rectangular hole S, which is a notch area for mounting an air cylinder, is formed at a position substantially below the center of the frame 24, and the air cylinder 4 is installed so as to penetrate the rectangular hole S and protrude to both sides. It is. The air cylinder 4 is screwed to the frame 24 by a cylinder bracket 4a and a screw 4b, and has a swing arm 5 that performs a reciprocating linear motion in the vertical direction in response to the air fed from the air joint 4c. The tip of the swing arm 5 is connected to a fifth link 15 of the link mechanism 3 described later.

  At one end side in the longitudinal direction of the frame base 21 (right end in FIG. 2), a tooth unit 31 is installed and screwed to the frame base 21.

  As shown in FIG. 2 or FIG. 5, the tooth mouth unit 31 mainly includes a block body 32, a block cover 33, a slider 34, a convex die 35, a concave die 36, and ball plungers 37 and 38. Is done.

  The block body 32 has a substantially U-shape, and a vertical groove 32a is formed on the front surface of the upper block portion. The block cover 33 is screwed so as to cover the vertical groove 32a formed in the upper block from the front surface, and the vertical groove 32a is covered with the block cover 33 so that a vertical through hole 32a is formed. It is. The slider 34 penetrates through the through hole 32a, and reciprocates linearly up and down by a link mechanism 3 described later.

A mounting hole 34 a and a small hole 34 b following the mounting hole 34 a are formed on the lower end surface of the slider 34, and a through lateral hole 34 c reaching the small hole 34 b from the side surface of the slider 34 is formed.
A ball plunger 37 is inserted into the penetrating horizontal hole 34c and biased so that the tip ball is exposed to the small hole 34b.

  The convex die 35 has an outer shape corresponding to the shape of the mounting hole 34a so that the convex die 35 can be fitted into the mounting hole 34a, and a convex portion 35a serving as a terminal crimping surface is formed on the lower surface side thereof. A convex portion 35b that fits into the small hole 34b is formed on the upper surface side, and a groove 35c for fitting a tip ball of the ball plunger 37 is formed on the side surface of the convex portion 35b. . Therefore, when the convex die 35 is inserted into the mounting hole 34a and the small hole 34b, the tip ball of the ball plunger 37 is fitted into the groove 35c, whereby the convex die 35 is fixed to the slider 34. The convex die 35 and the slider 34 constitute the movable crimping body 2.

An attachment hole 32b and a small hole 32c following the attachment hole 32b are formed on the upper surface of the lower block portion of the block body 32, and a through horizontal hole 32d reaching the small hole 32c from the front surface (side surface) of the block body 32 is formed. ing.
A ball plunger 38 is inserted into the through horizontal hole 32d and is biased so that the tip ball is exposed to the small hole 32c.

  The concave die 36 has an outer shape corresponding to the shape of the mounting hole 32b so that the concave die 36 can be fitted into the mounting hole 32b. A concave portion 36a for supporting a terminal is formed on the upper surface side of the concave die 36. Is formed with a projection 36b sized to fit into the small hole 32c, and a groove 36c for fitting the tip ball of the ball plunger 38 is formed on the side surface of the projection 36b. Therefore, when the concave die 36 is inserted into the mounting hole 32b and the small hole 32c, the tip ball of the ball plunger 38 is fitted into the groove 36c, whereby the concave die 36 is fixed to the block body 32. The fixed receiving portion 1 is configured by the concave die 36 and the lower block portion of the block body 32.

  The convex die 35 and the concave die 36 are prepared in a plurality of types according to the size of the wire to be crimped and the terminal, and can be crimped on crimping terminals of different sizes by replacing them as a set. It is.

Next, the link mechanism 3 will be described. As shown in FIG. 2, the force of the reciprocating linear motion of the swing arm 5 of the air cylinder 4 is amplified and transmitted into the space formed by the frame base 21 and the pair of frames 24, so that the movable crimping body 2 is transmitted. A link mechanism 3 for lowering is formed.
The link mechanism 3 is composed of five links from the first link 11 to the fifth link 15, and one end of the first link 11 is slidably connected by the slider 34 and the pin 11a of the movable crimping body 2 described above. The other end side is pivotally connected to one end side of the second link 12 and a pin 12b at a position higher than the one end side. One end of the second link 12 is pivotably connected to the other end of the first link 11 by a pin 12b, and is pivotally supported on the frame 24 at a position near one end of the second link 11. The support shaft 12a is provided. The other end side of the second link 11 that is away from the support shaft 12a is connected to one end side of the third link 13 and a pin 13a so as to be swingable. The second link 12 causes a force amplification action based on the lever principle, and the ratio of the distance between the support shaft 12a and the pin 12b and the distance between the support shaft 12a and the pin 13a determines the lever ratio. It will be.

  One end side of the third link 13 is swingably connected to the other end side of the second link 12 by a pin 13a, and the other end side is lower than the one end side, and the one end side of the fourth link 14 and the fifth link are connected. Is pivotably connected to one end side of the pin by a pin 13b. One end side of the fourth link 14 is connected to the other end side of the third link 13 and one end side of the fifth link by a pin 13b so as to be swingable, and the other end side is higher than the one end side, and the frame 24 The shaft 14a is pivotably supported by the support shaft 14a. One end side of the fifth link 15 is connected to the other end side of the third link 13 and one end side of the fourth link by a pin 13b so as to be swingable, and the other end side is connected to the swing arm 5 of the air cylinder 4 and the pin 15a. It is swingably connected.

  The three links of the third link 13, the fourth link 14, and the fifth link 15 constitute a toggle mechanism, and when the swing arm 5 of the air cylinder 4 reciprocates linearly in the vertical direction, the third link 13, The fourth link 14 and the fifth link 15 act on the second link 12 in conjunction with each other. The second link 12 rotates about the support shaft 12a, and accordingly, the first link 11 connected to the second link 12 moves in the vertical direction. With the movement of the first link 11, the slider 34 moves in the vertical direction, and the movable crimping body 2 approaches or moves away from the fixed receiving portion 1.

  FIG. 5 is a view showing the foot unit 6, and one end of the wiring 61 is connected to the air joint 4 c of the air cylinder 4, and air is sent to the air cylinder 4 through the wiring 61 by stepping on the pedal 62. Can do. A time delay valve 63 is attached so that the amount of air fed into the air cylinder 4 does not vary depending on how the pedal 62 is depressed, so that even if the pedal 62 is shallow or short. Thus, it is possible to continue sending an air amount sufficient for pressure bonding to the air cylinder 4.

  Next, the use operation will be described. In use, the crimp terminal and the electric wire are placed on the fixed receiving portion 1 at predetermined positions on the concave die 36. Then, when the pedal 62 of the foot unit 6 is stepped on, the swing arm 5 of the air cylinder 4 protrudes, the link mechanism 3 is operated, and the movable crimping body 2 is lowered to be placed on the fixed receiving portion 1. The crimp terminal thus clamped is sandwiched between the convex part 35a of the movable crimping body 2 and the concave part 36a of the fixed receiving part 1, and the electric wire and the crimp terminal are connected. When the pedal 62 of the foot unit 6 is released, the swing arm 5 returns to the air cylinder 4, the link mechanism 3 returns to its original state, the movable crimping body 2 rises, and the crimped wire and crimping terminal are removed. It can be taken out.

  In the above movement, the swing arm 5 of the air cylinder 4 only moves up and down, and each link constituting the link mechanism 3 also moves slightly in the longitudinal direction of the frame base 21 along with the up and down movement. Since there is almost no movement of the center of gravity in the direction, it can be operated stably. In addition, since the air cylinder 4 is placed above the frame base 21, the entire device can be made compact. In particular, in order to handle a large crimp terminal, even when it is necessary to use a large air cylinder that is heavy and heavy as a power source, the air cylinder can be arranged on the frame base in a balanced manner.

  Although the embodiments considered to be representative examples of the present invention have been described above, the present invention is not limited only to the above-described embodiments, and includes the above-described constituent features according to the present invention and refers to the present invention. The present invention can be carried out with appropriate modifications within the scope of achieving the object and having the effects referred to in the present invention.

  The present invention is particularly implemented as a tool for crimping and attaching a terminal to the tip of an electric wire.

The perspective view of the crimping | compression-bonding apparatus which is one Example of this invention. The perspective view which shows the internal structure of the crimping | compression-bonding apparatus. The front view of the crimping | compression-bonding apparatus. The top view of the crimping | compression-bonding apparatus. Sectional drawing of the mouthpiece unit 31 of the crimping | compression-bonding apparatus. The side view of the foot unit 6 of the crimping | compression-bonding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed receiving part 2 Moving crimping body 3 Link mechanism 4 Air cylinder 5 Swing arm 11 1st link 12 2nd link 12a Support shaft 13 3rd link 14 4th link 14a Support shaft 15 5th link 21 Frame base 24 Frame 31 Tooth unit

Claims (3)

A fixed receiving portion 1, a movable pressure-bonding body 2 which is a position above the fixed receiving portion 1, and is movably attached to the fixed receiving portion 1 so as to be closely spaced in the vertical direction; A link mechanism 3 connected to the upper part, an air cylinder 4 that operates the link mechanism 3, and a pair of frames that are erected so as to sandwich both sides of the link mechanism 3 and support the support shafts 12a and 14a included in the link mechanism 3. 24 and a frame base 21 that supports the lower portions of the pair of frames 24,
The frame 24 is formed with an air cylinder mounting region S for mounting the air cylinder 4 at a position below the link mechanism 3, and the frame 24, the air cylinder 4, the fixed receiving portion 1, and the movable press-bonding body 2 are formed on one frame base 21. A crimping device arranged above.   The link mechanism 3 includes a first link 11 having one end connected to the upper portion of the movable pressure-bonding body 2, and one end near the support shaft 12 a that is supported by the frame 24 by the support shaft 12 a. A second link 12 that is swingably connected to the second link 12, a third link 13 that is swingably connected to the other end of the second link 12, and a first end that is swingable to the other end of the third link 13. The other end of the fourth link 14 is pivotally supported on the frame 24 by the support shaft 14a, and the other end of the third link 13 and one end of the fourth link 14 are connected to each other. The crimping device according to claim 1, comprising a fifth link (15) that is freely connected and has the other end actuated by an air cylinder (4).   The crimping device according to claim 1 or 2, wherein the air cylinder (4) is attached so as to protrude to both outer sides of the pair of frames (24) in the air cylinder attachment region (S).

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