JPH07205471A - Manufacture of multiple needle recording head - Google Patents

Abstract

PURPOSE:To make an accurate and easy connection to a corresponding position of a wiring board by a method wherein, before removing an electrode supporting block and the wire materials for recording electrode from a wire winding jig, the bundled parts of the wire materials are fixed to a wire material fixing part. CONSTITUTION:Wire materials 10 are selectively wound around the pins 6L, 7L, 8L, 6R, 7R and 8R of a winding jig 1, arranged at a pretermined pitch using a wire material retaining groove and mounted extending over a cavity groove 2. At this time, the wire materials 10 are bundled by bundling, pins 7L and 7R into groups in number N and thereafter are laid between the guide pins 8L and 8R. The bundles of the wire materials 10 laid between the pins 7L and 8L are attached and fixed by adhesive agent 18 or solder on a sheet of wire material fixing member 3 arranged in the longitudinal direction of the winding jig 1, thereby holding the bundles of the wire materials 10 in fixed positional relationship. A bundling part 17 for each bundle of the wire materials 10 is cut along a cutting portion 12 between the pins 8L and 8R to take out the wire materials 10 from the winding jig 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a multi-needle recording head suitable as an electrostatic recording type recording head.
More specifically, according to the present invention, wire rods (hereinafter, referred to as print electrode wire rods or simply wire rods) forming the recording electrodes of a multi-needle recording head are grouped and connected to a wiring substrate for the sake of simplifying a drive circuit. The present invention relates to a method for manufacturing a multi-needle recording head that can be obtained in a suitable state.

[0002]

2. Description of the Related Art In a multi-needle recording head, for example, as shown in FIG. 6, recording electrodes 101, 101 are arranged in high density at two rows at a constant pitch, and two rows of electrodes are arranged outside this row. The electrodes 102, 102 and the recording electrodes 101, 101
And an electrode support block 103 made of resin or the like for supporting the control electrodes 102 and 102 and the electrode support block 1
The wiring board 105 connects the recording electrode wire rods 104 drawn out from the group 03 for each group. Here, the respective recording electrodes 101, 101 are provided so as to be collectively connected to the driving circuit for each recording electrode which can be grouped in order to simplify the driving circuit (not shown). Therefore, the recording electrodes 101, the wire rods 104 forming the 101 are bundled for each group, and the binding portion 117 is once connected to the wiring substrate 105, and then connected to the drive circuit for each group.

Such a multi-needle recording head is shown in FIG.
It can be efficiently manufactured by using a winding machine as shown in FIG. 5 and a winding jig as shown in FIG. First, the block of the control electrode 102 is arranged in the cavity groove 107 of the winding jig 106, and then the wire material 104 is wound around the cavity groove 107 at a constant pitch so as to cross the cavity groove 107. At this time, the wire rod 104 has pins 108, 118, 11 protruding around the winding jig 106.
Pins 108 are assigned to each group using 9
It is bundled between 108. Next, two winding jigs 106 wound with the wire rod 104 are butted against each other to form the cavity groove 1
The electrode support block 10 is prepared by injecting an electrically insulating resin into 07.
3 is formed and the wire 104 is hardened. Further, a portion (a binding portion) 117 bundled for each group of the wire rods 104 is soldered (not shown) and then cut at a cutting portion indicated by reference numeral 109. Then, the electrode support block 103 and the wire rod 10
4 is removed from the winding jig 106 and the binding portion 117 is soldered to the contact terminal 110 of the printed circuit board 105.

The winding machine shown in FIG. 4 has a wire rod guide 111 for guiding the supply of the wire rod 104 to the winding jig 106.
A first motor 113 that reciprocates the wire rod guide 111 along the guide shaft 112; a second motor 114 that swings and rotates the winding jig 106 when the wire rod 104 is wound; The second motor 113, 114 includes a control device 115 for controlling the second motor 113 and the like.

[0005]

However, according to this manufacturing method, the binding portions 117 of the wire rods 104 bundled for each group are hardened by solder so as not to be separated, but Since the positional relationship with the bundle is not fixed to each other, when the electrode support block 103 and the wire rod 104 are detached from the winding jig 106, the binding portion 117 and the binding portion 117 of the wire rod 104 due to the tension applied to the wire rod 104 and the like. The positional relationship with Therefore, as shown in FIG. 6, it may be difficult to accurately solder all the binding portions 117 to the corresponding contact terminals 110 of the wiring board 105.

According to the present invention, the positional relationship between the binding portions of the wire rods drawn out from the electrode support block does not become uneven,
An object of the present invention is to provide a method for manufacturing a multi-needle recording head that can be accurately and easily connected to a corresponding position on a wiring board.

[0007]

In order to achieve such an object, the present invention provides a winding jig provided with a cavity groove for injecting an electrically insulating resin into each recording electrode capable of grouping a recording electrode wire rod. The wire rods for the first and second recording electrodes, which are wound around the cavity groove while being bundled and are wound at a constant pitch, are hardened by an electrode supporting block of an electrically insulating resin which is injected into the cavity groove in a staggered arrangement. In the method of manufacturing a multi-needle recording head, the bundled portion of the recording electrode wire is fixed to the wire fixing member before the electrode support block and the recording electrode wire are removed from the winding jig.

[0008]

The positional relationship between the bundle of wire rods bundled in groups on the winding jig and the bundle is fixed to the wire rod fixing member on the winding jig. Therefore, even if the electrode support block and the wire are taken out from the winding jig, the positional relationship between the bundle of wires does not become different.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to the embodiments shown in the drawings.

First, FIGS. 1 and 2 show an example of a winding jig and a wire rod fixing member for carrying out the manufacturing method of this embodiment. The winding jig 1 is provided with a cavity groove 2 for forming the electrode support block 11. In the case of the present embodiment, two winding jigs 1 having the same structure as those shown in FIGS. 1 and 2 are arranged such that the cavity grooves 2 are butted against each other to form an electrode support block therebetween. To be used.

Further, in the winding jig 1, wire rod holding grooves 5 are formed at a constant pitch in the jetty portions 4 and 4 at the edge of the cavity groove 2 in a direction orthogonal to the length direction of the winding jig 1. ing. This wire rod holding groove 5 can group, for example, M wires 1
When N recording electrode groups are arranged in a row as a group of recording electrodes, M × N pieces are formed. Specifically, the wire-holding groove 5 of this embodiment has a total of 704, which is 55 sets with 128 sets as one set.
Zero lines are formed. In addition, the winding jig 1 has a cavity groove 2
Orientation pins 6 _L , 6 for orienting the wire rod 10 outside the
Bundle pins 7 _L and 7 _R for grouping and bundle _R and wire rods and guide pins 8 _L and 8 _R for guiding the bundle of wire rods to the pin group on the opposite side are provided. Orientation pins 6 _L , 6 _R
For example, the number of grooves between the pins in 2 is 2M (256), respectively. Wire bundle pin 7
_L and 7 _R are provided for M (128) each, and 55
The wire rods 10 of the book are provided so as to be bundled into one group and distributed to 128 groups. Guide pin 8 _L ,
8 _R are also provided in M lines (128 lines). The wire rod 10 has pins 6 _L , 6 _R , 7 _L , 7 _R , 8 _L ,
It is wrapped around 8 _R and bundled with pins 7 _L and 7 _R for N pieces (55
Orientation pins 6 _L and 6 _R while being grouped by
Are arranged at a constant pitch so as to cross the cavity grooves 2 in a predetermined order. In addition, in FIG. 1, the pin 6 _L ,
Only a small number of 6 _R , 7 _L , 7 _R , 8 _L , and 8 _R are shown, and other pins are not shown. Further, in this embodiment, the pins 6 _L and 6 _R are formed on the pin plates 6 and 6, the pins 7 _L and 7 _R are formed on the pin plates 7 and 7, and the pins 8 _L and 8 _R are formed on the pin plate 8 and However, the present invention is not limited to this, and one pin or one pin may be provided.

The wire rod fixing member 3 is composed of one plate extending in the lengthwise direction of the winding jig 1, and is provided between the bundling pin 7 _L and the guide pin 8 _L on one side of the winding jig 1. And 8 _R and 8 _L
It is installed between and. The wire fixing member 3 is provided to fix by bonding a wire bundle that are grouped in bundles pin 7 _L.

Using the winding jig 1 and the wire rod fixing member 3, a multi-needle recording head is manufactured as follows.

First, the control electrode 9 and the like are arranged at predetermined positions in the cavity groove 2 of the winding jig 1. Next, for example, using a winding machine as shown in FIG. 4, the wire rod 10 is selectively wound around the pins 6 _L , 7 _L , 8 _L , 6 _R , 7 _R , and 8 _R of the winding jig 1. The wire holding grooves 5 are arranged at a constant pitch and are installed so as to cross over the cavity grooves 2. At this time, the wire 10 is bundled pin 7 _L, 7 N present (55 _R
Book) After being grouped into a bundle, guide pins 8 _L ,
It is passed over during 8 _R. In the present embodiment, the wire rod 10 is wound around the winding jig 1 while rotating the winding jig 1 in one direction, but the winding jig 1 is not particularly limited to this. The wire rod 10 may be wound in a semicircular shape around a predetermined pin while swinging. M x N (704
After completing the alignment of the wire rods 10 in all the (0) wire rod holding grooves 5, the two winding jigs 1 are butted against each other so that the cavity grooves 2 face each other, and the insulating resin is injected into the cavity grooves 2. Then, the electrode support block 11 is molded. Next, the bundle of wire rods 10 is fixed by soldering between the guide pins 8 _L and 8 _R.
Reference numeral 17 indicates a binding portion that is solidified with solder.

Next, between the pins 7 _L and 8 _L , the bundle of wire rods 10 is glued on one wire rod fixing member 3 arranged in the hand direction of the winding jig 1. Alternatively, the wire rods 10 are fixed by bonding them with solder or the like to fix the positional relationship between the bundles of wire rods 10.

Next, the binding portion 17 of each bundle of the wire 10 is cut at the cutting point 12 between the turn pins 8 _L and 8 _R. Then, from the winding jig 1 to the electrode support block 11 and the wire rod 1.
Take out 0.

Next, as shown in FIG. 3, the binding portions 17 of the respective wire members 10 are connected to the contact terminals 14 of the wiring board 13.
Secure with solder, etc. Reference numeral 15 is a wiring pattern, 16
Indicates a connector for connecting to the wiring pattern 15 of the same group and for connecting to a drive circuit (not shown). Reference numerals 19 and 19 denote recording electrodes made of the wire rod 10, and 20 denotes an intersection of the wire rod 10.

Since the binding portions 17 are fixed to the one wire rod fixing member 3 and are aligned without the positional relationship thereof being separated, the corresponding contact terminals 14 of the wiring board 13 are arranged.
Accurately positioned on all of them for easy soldering. Further, since the mutual positional relationship between the bundles of the wire rods 10 is fixed, the solder for soldering to the wiring board 13 is attached to each binding portion 17, so that it is easy to put in a solder bath (not shown). . Further, a sheet (not shown) for protecting the wire rod 10
When attaching the sheet, one end of the sheet may be attached to the wire rod fixing member 3 so that the wire rod fixing member 3 also serves as the fixing member of the protective sheet.

The above-described embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the above-described embodiment, the wire rod fixing member 3 is the wire rod 1.
Although it remains fixed to 0, the wire rod fixing member 3 may be separated from the wire rod bundle 10 after the wire rod bundle is connected to the wiring board 13 in some cases. Further, in this embodiment, all the binding portions 17 are fixed to the single wire rod fixing member 3, but the wire rods 10 belonging to the group connectable to the same control circuit are divided into a plurality of bundles, for example, the right half of the head. When the left half is divided into two parts and bundled, a plurality of members, for example, a member for fixing the binding part 17 of the wire member 10 in the right half and a member for fixing the binding part 17 of the wire member 10 in the left half are used as two members. Is also good.

[0020]

As is apparent from the above description, according to the present invention, a bundle of wire rods is fixed to a wire rod fixing member and pulled out from the electrode support block before removing the electrode support block and the wire rod from the winding jig. Since the positional relationship between the bundles of wire rods is prevented from becoming disjointed, the binding portions of the wire rods can be accurately and easily connected to the corresponding positions on the wiring board.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a winding jig upside down for carrying out a method of manufacturing a multi-needle recording head according to the present invention.

FIG. 2 is a cross-sectional view of the winding jig of FIG.

3 is a perspective view of a multi-needle recording head obtained by the winding jig of FIG.

FIG. 4 is a perspective view showing an example of a winding machine and a winding jig for manufacturing a multi-needle recording head.

FIG. 5 is a transverse cross-sectional view of a winding jig for explaining a conventional method for manufacturing a multi-needle recording head.

6 is a perspective view of a multi-needle recording head obtained by the manufacturing method of FIG.

[Explanation of symbols]

 1 winding jig 3 wire rod fixing member 10 wire rod 11 electrode support block

Claims (1)

[Claims] 1. A winding jig having a cavity groove for injecting an electrically insulating resin is wound at a constant pitch so as to cross the cavity groove while bundling the recording electrode wire rods into recording electrodes capable of being grouped. In the method of manufacturing a multi-needle recording head, the first and second recording electrode wire rods are hardened by an electrode supporting block of an electrically insulating resin injected into the cavity groove in a state of being arranged in a zigzag manner. And a method for manufacturing a multi-needle recording head, characterized in that the bundled portion of the recording electrode wire material is fixed to a wire material fixing member before the recording electrode wire material is removed from the winding jig.