JPS5859047A - Pressing-in device for insert - Google Patents

Abstract

PURPOSE:To provide a subject device which can rapidly press in an insert for a short time and eliminates the need to remove resin overflowing around the insert, by a method wherein the insert is held as it is heated in a manner to bring a forward end of a given heating device into contact with the insert. CONSTITUTION:An insert 36 is partially inserted into a hole 37 in a plastic molded product 35, and is lowered as it is heated with a heater 17 charged with a current. A flat forward end of a heating device 8 holds the insert 36 as the forward end makes contact with the insert 36 to heat it. Overflowing resin 38 is levelled by a heat insulating material 19, and the insert is then enoughly pressed in. When a press pressure attains 0, air, simultaneously, is exhausted through cooling perforations 20, 20' formed in an insulating material 13 and the heat insulating material 19 and through an outlet 29 of an air perforation in a heater, and this causes cooling of electrode parts 12, 12', the heater 17, and the insert 36.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention also relates to a device for press-fitting an insert such as a screw into a plastic molded product used in a certain housing.

Recently, lightweight, molded, and colored white 111 plastic molded products have been increasingly used for the housings of office machines and non-viewers Q9. In order to attach the main body or other parts, there is usually a cover in which an inserter such as a screw is inserted. Therefore, in the past, a screw was placed in the hole in the molded product, and the screw was heated by applying a soldering iron to the tip of the fist to heat the screw and melt the resin around the hole. Press-fit the screws 1 and 1, followed by the screws 17
I was constantly hitting 1+14 in the hole.

However, [7. This method T: Is it suitable for molded products? ! Handmade with / number of holes torn: 3'T: Due to the 111j time required - [not only that, but when press-fitting, the screw will be IIV' in the 1st direction of the indentation. Because of this, it is often impossible to fit other parts onto the molded product. j7 is T
Due to the forceful use of the screws, the resin spilled out and the resin had to be trimmed.

The invention was invented to improve the two shortcomings of the conventional press-fitting method, and it is possible to press-fit the insert accurately in a short time and remove the resin that overflows around the insert. The object of the present invention is to provide an insert press-fitting device that does not require an insert press-fitting device.

Therefore, the present invention is characterized by a moving device that moves a heating device comprising a holder that holds a heater electrode part and a heater in an electrically insulated manner relative to a support base for a plastic molded product. In an insert press-fitting device having a structure, the separated rod-shaped electrode parts as the heater electrode parts are combined so as to be electrically insulated, and a cylindrical part having an air through hole in the longitudinal direction is used. At the same time, a heater having an air through hole is inserted inside the tip of the electrode part, and a heat insulating material is attached to the outside of the partially protruding part to form a flat tip, and the heater The device has a cooling through hole that communicates with the air through hole inside.

Embodiments of the present invention will be described below with reference to the accompanying drawings. do.

Figure 1 is an overall view of the inlet press-fitting device according to the present invention. 7 Then, the air cylinder (3) is taken inside the illustrated glue 11<the support base (1) 2, and the compressed air in the cylinder moves ll+ (41 to the earthwork, and this 1lql ( The slide shaft (51) connected with 41 is fixed by a bearing (6) located outside the support base (1), and the tongue 1 moves into the earthwork according to the movement of the said one (4), and the adjustment collar 11-11 (7) is installed between the upper and lower bearings (61, (Gl') to adjust the rl of the earthwork reciprocating movement of the slide shaft (5) 1'/i'j +-
? C) The slide shaft (
5) The heating device (8), which will be described later, is connected to the upper end of -(V
An arm (9) is provided for moving the moving device (Itll) by each mechanism of the air cylinder (31), the slide shaft (5), and the arm (9).
'f'i is made) 1.

Figure 2 shows the moving device for the glue 11 (σ connected to 1111)
In addition, the heater electrode bar IX that constitutes the heating device is
In the figure, (121, (121') is a bar-shaped electrode part with a semicircular cross section = 71-, and these electrode parts (121, (12+') are insulating material (131) in the longitudinal axis direction of the opposing surface. The electrode parts (12+, t12+') assembled in this way are connected to each other in the longitudinal direction. It has an air through hole (141e).<It is a cylinder that is in the shape of an ebb and has an air through hole (■5) as shown in Fig. 3 on the inside of its tip and has a cut groove (16) in the long ζ direction. The heater αD of the body is inserted tightly so that it protrudes from the electrode part (121, (121' force) n-, heater protrusion part 08).A cylindrical heat insulating material 09 whose tip is flat 1f! is placed on the outside of the heater protrusion part 08. ) is attached.On the other hand, the insulating material (13) sandwiched between the electrode part (121, (12f)
It is inserted to the middle of the groove (■6) and 5 heaters (17
) are provided with cooling through holes perpendicular to the longitudinal direction (
20) is provided and communicates with the longitudinal air through hole (1 (1)) to cool the electrode parts (12+, (12+'), heater (17), etc.). The through hole (20f) is provided in the heat insulating material (19) and communicates with the air through hole (14). (+21. (=5-) is a ring-shaped thing provided on the outer periphery of the electrode part f121.
(121').In addition, between the electrode terminal (21) and the electrode part (121, (121')
A t-insulated old 31υ is coated to insulate only the electrode portion (12).

Figure 4 shows a state in which the heating device is attached to the above-mentioned moving device, and the holder (22) is a cylindrical cylinder that extends through the air through hole in the longitudinal direction. The heater electrode part (11) is inserted into the insertion hole (24) provided in the lower half and is fixed with a 1", 1", 1-pole I-c!5+.

Insulation 4A' (261 I) is placed at the boundary between the heater electrode part (11) and the surface of the insertion hole 041, and the electrode part (
This prevents the current of 121 from flowing to the holder t22+.

In this case, the current is snn normal bolt or boulder (22j) and electrode part (121, heater ta71.
Blood bleeds through the electrode section (12f) to the electrode terminal (211).

Next, attach the air blower (2) to one end of the holder (22).
7) For attaching the air inlet E" 1 (caused by the diameter of the air inlet snout) which is larger than the diameter of the 1 holder's air hole.
6= The air through hole (23) and the air through hole (+41 are in communication with each other in the electrode section, and the air sent from the air blower is located at the tip of the heater electrode section) rA (13) Cooling through holes (2 (1) and insulation + Ji + 91 cooling through holes (20+',
(Emitted from 29+, electrode part (12+, (1',
! l' and heater (17) and cool the insert.

In this way, such a heating device (81) is fitted into the supplementary ring (30) of the arm (9), and the groove (31) provided on the circumferential surface of the holder (22+) and the through hole provided in the mounting ring (301) It is fixed by inserting a guide bin (size) into the mounting ring (301). Also, a presser spring (3 types) is fitted into the lower side of the mounting ring (301).

With the above configuration, when the arm (9) moves downward, the heating device (8) also moves downward, but when the tip of the heating device comes into contact with the insert,
After that, the mounting ring (skin) slides on the outer peripheral surface of the holder and transmits an appropriate force to the insert by the elasticity of the presser spring Oa. Conversely, when the arm (9) moves upward, the kite pin (33) moves into the groove. (31), 7-'' Move the heating device (8) to 10,000 while it is stuck on one end.

Next, the actual operation of the +fl insert press-fitting device will be explained with reference to FIGS. 5 and 6.

First, place the plastic molded product CI', +l (r) on the support stand (1) in Figure 1 and !/11 <in' as shown in Figure 5.
! J----1. (For example, a screw) (3r; + is inserted into the hole (371) of the molded product. Then, machine γ
- When the cylinder (3) is activated - the same as 11. ! , the current is passed through the heater (171) and the heater (In('i
・While heating j7, lower the moving device fffll -1r
[7] First, insert the rough tip of the heating device (8) into the insert (so that it does not come into contact with the bullet). resin(
:(I(I) is heated to a temperature necessary for press-in of I(I). 1, ++u ('') Inser I. The resin that touches 1- is Kawameika 17q゛1,
The switch of heater 07) is turned on by the timer.
However, even if the controller switch is turned off, the insert (:
Listen to the tfil spring (, (by the +711 force of -11 and keep pressing 1, the VC, i poem will come out 4iiJ
The flit C (8) is flattened by the insulation shell (19),
After that, 1 degree later, when the presser foot pressure is reduced to 0, the presser foot pressure becomes 0. Air is released from the outlet C79 of the through hole and the electrode part (121, (1
21', the heater ση and the insert (361) are cooled (see Figure 6). In this way, the above press-fitting operation is completed, and finally, when the insert (361) is cooled and fixed, the heater ση and the insert (361) are cooled. Return to position.

As described above, the device of the present invention combines separated rod-shaped electrode parts so as to sandwich an insulating phase in the longitudinal direction to form a cylindrical shape having an air through hole in the longitudinal direction, and A heater with an air through hole inside the tip of the electrode section is inserted into the electrode section, and a heat insulating material is attached to the outside of the partially protruding sag part to form a flat tip section. Since the heating device consists of a heater electrode section with a cooling through hole that communicates with the air through hole, and a holder that fixes this electrode, the insert can be press-fitted quickly and accurately, and the insert Because the resin overflowing around the circumference of the heater can be flattened by the heat insulating material attached around the heater, no rim work is required, and the heat insulating material is attached to the heater. The heater will not sink into the IJ15 type product, and it will be difficult to use the IJ15 type product. If the appearance of the molded product is good, various significant effects will be exhibited, such as the fact that the heating device is small and can be used in places where it is difficult to use.

[Brief explanation of drawings]

FIG. 1 shows the device of the present invention i't (7J it': surface l1ai
Figure, TI',' 2 (Tl&:I) shows the heater electrode ↑η1s which forms the main part of the present invention, (A) is its plan view, (B) is the longitudinal H'ft view. Figure 3 r [Front view of the heater, Figure 4 shows the heating device 4 and transfer to the J1 device.
Partial vertical view with y attached..."Surface view, Figure 5-1:,-j:
FIG. 6 is a clear view showing the process 4 of press-fitting the insert into the molded product of the insert 1 and the plus snack using the apparatus of the present invention (2). (1)...support stand, (8)...)111 heat device j'
j I(H1+-=mobile equipment+gi, (121(12...rod-shaped electrode>li.fli(21il C'(9)...insulation 4N',
(141(15+ +2Kl+・″j′kiti,
11ft hole. (l[il...cutting structure, (171...heater. (I8)...heater protrusion 11 τl+, (1
! +1...11) E fever."(2(llt2+ir...1'j for cooling, 1lfI
+221...Holder. -1(1 Figure 2 '29 234- Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] / Insert press-fitting device having a configuration in which a heating device consisting of a heater electrode portion and a holder that holds this n2 fixedly in an electrically insulating relationship is fixedly or slidably attached to a moving device that moves with respect to a support base for a plastic molded product. In this method, the separated rod-shaped electrode parts as the heater electrode parts are assembled so as to be electrically insulated and formed into a cylindrical shape having an air through hole in the elongated direction, and air is injected inside the tip of the electrode part. A heater having a through hole is inserted, a heat insulating layer is attached to the outside of a partially protruding part of the heater to form a flat tip, and a cooling through hole is provided inside the heater and communicates with the air through hole. An insert press-fitting device characterized by being provided with.