JPH0621245U - Wire clamper - Google Patents

Abstract

(57) [Summary] [Purpose] The parallelism of the clamp can be adjusted easily and the wire can be securely clamped by soft touch. A pair of fixed clamps 2 and a movable clamp 3 for clamping a wire 1 are fixed to a fixed arm 6 and a movable arm 7 via leaf springs 4 and 5, respectively. The leaf springs 4 and 5 are fixed to the clamp member mounting portion to which the fixed clamp member 2 or the movable clamp member 3 is fixed, and to the fixed arm 6 or the movable arm 7 at the entire circumference or at least two positions outside the clamp member mounting portion. Arm fixing portion, and at least two spring portions having spring properties and connecting the clamp attachment portion and the arm fixing portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wire clamper in a wire bonding device.

[0002]

[Prior art]

 As a conventional wire clamper, for example, one disclosed in Japanese Patent Publication No. 61-2294 is known. In this structure, either one of a pair of clamp plates (clamp elements) for opening and closing to clamp the wire is urged by the shock absorbing spring to the other clamp plate (clamp element) or clamp part side. Become.

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional technique has an excellent feature that the shock load at the time of clamping is alleviated by the shock absorbing spring. However, no particular consideration is given to the parallelism of the clamp plate (clamp element) that clamps the wire and the wire contact state of the clamp plate (clamp element) during wire clamping.

An object of the present invention is to provide a wire clamper that can easily perform parallel adjustment of a clamp element and can reliably clamp a wire by soft touch.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above object is a wire clamper in which a pair of fixed clamps for clamping a wire and a movable clamp are fixed to a fixed arm and a movable arm via leaf springs, respectively. The leaf spring has a fixed clamp member or a movable clamp member fixed thereto, and a clamp member mounting portion provided in the central portion and a fixed arm or a movable arm at the entire circumference or at least two positions outside the clamp member mounting portion. And an at least two spring portions which have spring properties and which connect the clamp attachment portion and the arm fixing portion with each other.

[0006]

[Action]

 At the time of wire clamping, the leaf spring to which the fixed clamp element is fixed and the leaf spring to which the movable clamp element is fixed are respectively deformed by the spring portions to clamp the wire. In this case, at least two spring portions of the leaf spring are deformed, and the two leaf springs to which the fixed clamp element and the movable clamp element are fixed are deformed, so that the clamping surfaces of the fixed clamp element and the movable clamp element are connected to the wire. The spring part of the leaf spring is deformed so that it automatically follows. Therefore, the initial parallel alignment adjustment time of the clamp surfaces of the fixed clamp element and the movable clamp element is shortened, the wire clamping force is equalized with respect to the wire clamp portion, and it is possible to reliably clamp with a soft touch.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, the pair of fixed clamps 2 and movable clamps 3 for clamping the wire 1 are connected to the fixed arm 6 and the movable arm 7 via leaf springs 4 and 5, respectively. It is fixed opposite to. Here, the fixed arm 6 and the movable arm 7 are provided with relief portions 6a, 7a for allowing the fixed clamp element 2 and the movable clamp element 3 to move appropriately. The other end of the fixed arm 6 is fixed to the clamper support 8 of the apparatus, and the intermediate portion of the movable arm 7 is rotatably supported by the clamper support 8 via a support shaft 9. One coil side 10a of the linear motor 10 is fixed to the other end side of the movable arm 7, and the other core side 10b of the linear motor 10 is fixed to the clamper support 8. The movable arm 7 is urged by a very weak spring 11 in the direction in which the movable clamp 3 is closed (toward the fixed clamp 2 side). A signal from a control circuit 12 including a microcomputer or the like is input to the linear motor 10 via a linear motor drive circuit 13.

The leaf springs 4 and 5 have the same structure. As shown in FIG. 3, the leaf springs 4 and 5 have a clamp attachment portion 20 for attaching the fixed clamp element 2 or the movable clamp element 3 at the center thereof. Around the mounting portion 20, a symmetrical kerf 22 is provided, leaving a spring portion 21 sufficient to secure an appropriate spring force at a symmetrical position. The fixed clamp element 2 or the movable clamp element 3 is fixed to the clamp element attachment portion 20 of the leaf springs 4 and 5 with an adhesive or the like, and the leaf springs 4 and 5 to which the fixed clamp element 2 or the movable clamp element 3 is fixed are The arm fixing portion 23 outside the cut groove 22 is fixed to the fixed arm 6 or the movable arm 7 with an adhesive or the like. Here, the leaf springs 4 and 5 are fixed to the fixed arm 6 or the movable arm 7 as follows. As shown in FIG. 4 and FIG. 5, the leaf spring 4 is placed at 45 ° (in the case of FIG. 4) or 90 ° (in the case of FIG. 5) of the spring portion 21 of the leaf spring 4 with respect to the wire path 14 of the wire 1. When the leaf spring 5 is mounted as described above, the leaf spring 5 is attached so that the spring portion 21 of the leaf spring 5 is orthogonal to the spring portion 21 of the leaf spring 4.

Next, the operation will be described. When a positive current or voltage is output from the control circuit 12 (output in the clamper closing direction), the coil side 10a of the linear motor 10 is attracted to the core side 10b, and the movable arm 7 rotates about the spindle 9. That is, the movable clamp 3 rotates to the fixed clamp 2 side, and the wire 1 is clamped by the fixed clamp 2 and the movable clamp 3. From this state, when a negative current or voltage is output from the control circuit 12 (output in the clamper opening direction), the coil side 10a of the linear motor 10 is separated from the core side 10b, and the movable clamp 3 is fixed. The further apart the wire 1 clamp is released.

By the way, when the wire 1 is clamped by the fixed clamp element 2 and the movable clamp element 3 as described above, the leaf spring 4 to which the fixed clamp element 2 is fixed and the leaf spring 5 to which the movable clamp element 3 is fixed. Respectively deform by the spring portion 21 and clamp the wire 1. In this case, since at least two spring portions 21 of the leaf spring are deformed, and the two leaf springs 4 and 5 to which the fixed clamp element 2 and the movable clamp element 3 are fixed are deformed, the fixed clamp element 2 and The spring portions 21 of the leaf springs 4 and 5 are deformed so that the clamp surface of the movable clamp element 3 automatically follows the wire 1. Therefore, the initial parallel alignment adjustment time of the clamp surfaces of the fixed clamp element 2 and the movable clamp element 3 is shortened. Further, the wire clamping force is made uniform with respect to the clamped portion of the wire 1, and the wire can be reliably clamped by the soft touch. In this case, as shown in this embodiment, if the spring portion 21 of the leaf spring 4 and the spring portion 21 of the leaf spring 5 are mounted so as to be orthogonal to each other, a more excellent effect is exhibited.

6 to 9 show another embodiment of the present invention. As shown in FIG. 6, the fixed clamp member 2 and the movable clamp member 3 are respectively fixed to the leaf springs 30 and 31 with an adhesive or the like, and the leaf springs 30 and 31 are fixed to the fixed arm 6 and the screw or rivet 32, respectively. It is fixed to the movable arm 7. The leaf springs 30 and 31 have the same structure. As shown in FIG. 7, the leaf springs 30 and 31 have a clamp attachment portion 33 for attaching the fixed clamp element 2 and the movable clamp element 3 in the central portion thereof. A spring portion 34 is provided at a symmetrical position on the outer peripheral portion of 33, and an arm fixing portion 35 fixed to the fixed arm 6 or the movable arm 7 is provided outside the spring portion 34. Therefore, the arm fixing portion 35 is fixed to the fixed arm 6 or the movable arm 7 with screws or rivets. In this case, as in the above-described embodiment, as shown in FIGS. 8 and 9, the leaf spring 30 is moved to the wire path 14 of the wire 1 such that the spring portion 34 of the leaf spring 30 is 45 ° (in the case of FIG. 8). ) Or 90 ° (in the case of FIG. 9), the leaf spring 31 is mounted so that the spring portion 34 of the leaf spring 31 is orthogonal to the spring portion 34 of the leaf spring 30. Install. Even if the leaf springs 30 and 31 are configured as described above, the same effect as that of the above embodiment can be obtained.

In each of the above embodiments, the two spring portions 21 and 34 are provided, but three or more spring portions may be provided. Therefore, in the structure of the leaf springs 30 and 31 of the second embodiment, when three or more spring portions 34 are provided, the arm fixing portions 35 are provided by the number corresponding thereto.

[0013]

[Effect of device]

 According to the present invention, there is provided a wire clamper in which a pair of fixed clamps for clamping a wire and a movable clamp are fixed to a fixed arm and a movable arm via leaf springs, respectively. Alternatively, the movable clamp is fixed, the clamp attachment part provided in the central part, the arm fixation part where the entire circumference or at least two points are fixed to the fixed arm or the movable arm outside the clamp attachment part, and the spring. Since it has at least two springs that connect the clamp attachment part and the arm fixed part, it is easy to adjust the parallelism of the clamp and the wire can be soft-touched. Can be reliably clamped.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a wire clamper according to the present invention.

FIG. 2 is a plan sectional view of a wire clamp portion.

FIG. 3 is a front view showing an embodiment of a leaf spring.

FIG. 4 is a view showing a state where the leaf spring is attached as viewed from the fixed arm 1
It is a front view which shows an example.

FIG. 5 is a front view showing another example of the same state as in FIG.

FIG. 6 is a plan sectional view of a wire clamp portion showing another embodiment of the wire clamper according to the present invention.

FIG. 7 is a front view showing an embodiment of a leaf spring.

[Fig. 8] Fig. 8 is a view showing a state where the leaf springs are attached as viewed from the fixed arm side.
It is a front view which shows an example.

FIG. 9 is a front view showing another example of the same state as in FIG.

[Explanation of symbols]

 1 wire 2 fixed clamp element 3 movable clamp element 4, 5 leaf spring 6 fixed arm 7 movable arm 20 clamp element attachment portion 21 spring portion 23 arm attachment portion 30, 31 leaf spring 33 clamp element attachment portion 34 spring portion 35 arm attachment portion

Claims (1)

[Scope of utility model registration request] 1. A wire clamper comprising a pair of fixed clamps for clamping a wire and a movable clamp fixed to a fixed arm and a movable arm via leaf springs, respectively, wherein the leaf springs are fixed clamps or A movable clamp member is fixed, a clamp member mounting portion provided in the central portion, an arm fixing portion whose entire circumference or at least two positions are fixed to a fixed arm or a movable arm outside the clamp member mounting portion, and a spring property. And a wire clamper having at least two spring portions for connecting the clamp attachment portion and the arm fixing portion.