JPS6362332B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal insert component mounting device for a synthetic resin molded product.

As a method of attaching a metal insert part, such as a screw receiver having a screw hole P1 circle carved in the inner peripheral surface as shown by the symbol P in FIG. ₁ , to a synthetic resin molded product, the metal insert part (hereinafter simply referred to as the insert part) is used. ) is heated and press-fitted into a synthetic resin molded product (hereinafter simply referred to as molded product) F. When installing insert parts using this method,
Conventionally, the insert part was heated with a heating plate, and then the heated insert part was picked by a person with a tweezers-like pick-up and press-fitted into the press-fitting point h on the molded product, which was not only inefficient but also
There was a problem in that the amount of heat applied to the insert part during press-fitting was uneven, and the press-fitting state was not constant, resulting in variations in the fixing strength of the insert part and the melted area of the resin.

This invention was made in view of the above-mentioned problems, and includes aligning insert parts with a parts feeder, automatically feeding them into a heating path in a heating device, and moving the insert parts from one end to the other end in the heating path. By using a structure in which the insert parts are heated, then taken out by a chuck device and sent to the insert part press-fitting position, each insert part can be automatically press-fitted and fixed at a constant temperature, compared to conventional methods. It is an object of the present invention to provide a metal insert component mounting device for a synthetic resin molded product that can obtain an even press-fit finish with high efficiency.

An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 2 and 3, A is an insert component heating supply device, and B is an insert component press-fitting device including an insert component chuck device. The insert part P is the flat screw receiver whose height is smaller than the diameter.

Reference numeral 100 is a swinging type parts feeder, which has an alignment groove 101 at its base as shown in FIG. 3, and has a rectangular shape that widens from the alignment groove 101 toward an upper opening. This alignment groove 101 has a supply port 101a at one end, and has a length and width that allow a plurality of insert parts P to be aligned in a continuous rolling manner. The parts feeder 100 has its alignment groove 1
A supply guide 2 in which one end of the support plate 102 attached to the outer surface of the supply port 101a is vertical.
The piston rod 103a of a vertically oriented swinging air cylinder 103 is connected to the other end of the air cylinder 103. When the piston rod 103a extends, the parts feeder 100 tilts upward to the right in the figure, and the surface on the supply port 101a side almost contacts the side surface 200a of the supply guide 200, and the reciprocating movement of the piston rod 103a Tilt down to the right. The swinging air cylinder 103 is connected to the supply guide 2
It is supported by a support rod 104 extending laterally from the back surface of the upper and lower center portion of 00.

The vertical supply guide 200 is a heating device 300
It is installed upright on the top surface of the heating block 301,
A falling path (open groove) 201 and a connecting path 2 that penetrate vertically
02 and a long window 203 that opens to the side surface 200a at the upper and lower center portions. The connecting path 202 is a diagonal groove that opens to the side surface and the drop path 201, and is provided at a height that becomes a diagonal groove continuous with the alignment groove 101 when the parts feeder 100 is raised. The drop path 201 has a width and a depth that allow a plurality of insert parts P to be aligned in a vertical line with the axial direction facing sideways, and is bored in the front surface of the supply guide 200 .
The front opening of the cover 204 is narrower than the diameter of the insert part P. Reference numeral 400 denotes a limit switch constituting the insert component detector, which is attached to the side surface 200a of the supply guide 200. When the detection needle 401 leaves the pusher (not shown), it sends a signal indicating that the insert component is out, and an alarm (not shown) is sent. output to the device. Detection needle 4
01 has a sensing end 401a bent in a dogleg shape on its free end side, and this sensing end slightly protrudes from the window 203 into the fall path 201 and inserts the insert part P.
It is inserted so that it is pressed by. Reference numeral 403 is a foot lever, which swingably hangs down from the support plate 102. This lever lever 403 has a falling path 20 because the insert part P is the detection needle 401.
This is to prevent the parts feeder 100 from getting stuck and unable to fall, and the detection needle 401 is pulled up when the parts feeder 100 rises.

The heating block 301 of the heating device 300 has a horizontal rectangular shape, and has a built-in heater 302 and a thermometer 303 for temperature control inside, and has an open groove-shaped heating path extending longitudinally in parallel with the heater 302 on the front surface. (hereinafter referred to as heating grooves) 304 are formed. This heating groove 304 is a horizontal groove with one end open on the end surface and the other end closed.
It communicates with the fall path 201 in the vicinity of a, and in order to prevent the insert part P from falling off, the longitudinal opening is narrowed by the cover 204, leaving a part of the closed end side which becomes the ejection port 304b. 305 is a feeding device (air cylinder) for feeding the insert part P piece by piece, and the piston rod 305a is inserted into the opening 304a.
It is inserted into the heating groove 304 and fixed horizontally. 302a is a lead for connecting the heater 302 to a heating power source, and 303a is a lead for connecting the thermometer 303 to a meter.

Reference numeral 500 denotes a chuck device, which has a bolt-shaped guide pin 501 and a chuck head 502 screwed onto the tip thereof.
Guide elements 504, 50 sandwiched from both sides as shown in the figure
4 is provided. The chuck device 500 is supported by a piston rod 601 of a reciprocating device 600 by inserting a guide pin 501 into a support body 602, and the guide pin 501 has its head and a support plate 60.
A return spring 505 is interposed between the two. 5
A guide bush 06 is fixed to the support 602 and guides the guide pin 501 in its axial movement.
The pick up element 503 can be elastically compressed and deformed in the transverse radial direction, and a portion thereof protrudes from _both sides of the guide element 504.
2 is pushed toward the insert part P, the pick-up element P slides into the hole P1 and is pressed into contact with the hole _P1 .

The reciprocating drive device 600 is disposed perpendicular to the axial direction of the guide pin 501, and when not in operation, the chuck device 500 is moved between the guide pins 504 and 50.
4 is held at the pick-up position I facing the outlet 304b of the heating groove 304, and the piston rod 6
01 is extended, the chuck device 500 is held in a press-in position away from the pick-up position.
In the press-fitting position, the guide 50 of the chuck device 500
4,504 faces the mounting hole h of the molded product F.

700 and 800 are air cylinders for pick-up and press-fitting, respectively, and the former is used to direct the rod end toward the head of the guide pin 501.
01, and the latter is arranged parallel to the air cylinder 700 at the press-fit position.

Next, the sequence operation of the entire device will be explained.

First, a large number of insert parts P are put into the parts feeder 100, and the swinging air cylinder 103 is driven to repeatedly swing the parts feeder 100 up and down. Due to this vertical swing, the insert part P
falls into the alignment groove 101 and is aligned, and when the parts feeder 100 rises to the highest level, the supply port 1 of the alignment groove 101
Connecting path 2 sequentially starting from the insert part P on the 01a side.
02 and enters the falling path 201, and rolls or slides down toward the heating groove 304 while kicking the detection needle 401 along the way in the falling path 201. The insert part P that came out from the falling path 201 to the heating groove 304 is the piston rod 30 of the air cylinder 305.
5a, the insert component P is fed by one frame to the ejection port 304b side, and by repeating this frame feeding operation, a plurality of insert components P are aligned in the heating groove 304. Each insert part P is taken out from the outlet 304 directly below the drop path 201.
While moving to b, it is heated to a predetermined temperature.

The pickup air cylinder 700 is driven in synchronization with the movement of the air cylinder 305, and the guide pin 501 is pushed out toward the heating block 301 by the forward movement of the rod of the air cylinder 700 against the elasticity of the return spring 505. chuck head 50
The second pick-up element 503 engages with the hole P ₁ of the insert part P that reaches the outlet 304b of the heating groove 304. When the pick up element 503 engages with the insert part P, the rod of the air cylinder 700 moves back, and along with this back movement, the guide pin 5
01 is returned to its original position by the action of the return spring 505, and the insert part P is placed in the pick-up element 503.
is picked up from the heating groove 304 by.
When the air cylinder 700 completes its backward movement, the reciprocating device 600 is operated to extend the piston rod 601, and the chuck device 500 is sent to the press-fitting device.

When the pick-up element 503 that locks the insert part P reaches a position facing the mounting hole h of the molded product F and stops, the press-fitting air cylinder 800
The rod operates and the guide pin 501
is extruded toward the molded part F, and the insert part P
is press-fitted into the mounting hole h. As a result, the resin of the molded product F melts and solidifies due to the heat of the press-fitted insert part P, and after a predetermined period of time (several seconds) after the press-fit.
The insert part P is fixed to the molded product F. This predetermined period of time is set in advance, and the rod moves back when a certain period of time has elapsed after the air cylinder 800 was activated. As the rod moves back, the guide pin 501 returns to its original position due to the action of the return spring 505, so the chuck head 502 separates from the molded product F, and the reciprocating device 600 operates, causing the guide pin 601 to move back. During this time, air cylinder 3
05 is activated, and the insert part P in the heating groove 304 is fed by one frame. Thereafter, the above-mentioned operation is repeated, and when the insert part P pushing the detection needle 401 runs out, the limit switch 400 outputs an insert part out signal, so that the parts feeder 100 is supplied with the insert part P.

FIG. 5 shows another example of the heating device 300, in which a heating groove 304 is formed on the upper surface of the heating block 301 to pick up the insert part P upward, and the insert part P from the falling path 201 is picked up. The supply of the insert part P is carried out by curving the lower end of the falling path 201.
1 into the heating groove 304.

In the above embodiment, the case where the height of the insert part P is low was explained, but in the case of an insert part whose height is larger than the diameter, the parts feeder 1
As 00, a ball-shaped vibrating feeder as shown in FIGS. 6A and 6B is used. Reference numeral 111 in the figure is a baffle tube, which is suspended from the center of the ball 110 by support bars 112, 112 in order to prevent the insert parts P from concentrating near the supply port 110a. A space with a height slightly larger than the diameter of the insert part P is provided between the bottom of the insert part P and the bottom of the insert part P. 120 is a vibrator.

As described above, according to the present invention, a heating device is provided that has a heating path and heats the insert while the insert is automatically fed a predetermined distance from one end of the heating path to the other end. The heated insert is automatically picked up by a reciprocating chuck device against the outlet at the other end of the heating path, and the reciprocating device moves the chuck device to the insert part press-fitting position. By adopting the configuration in which each insert part is fed to the heating path, the time from when it is supplied to the heating path until it is press-fitted into the molded product is constant and the molded product is press-fitted at the same temperature, so that there is no unevenness in each insert part. The insert parts are fed to the heating device by dropping them under their own weight after aligning them in a predetermined direction with the parts feeder, and the insert parts are fed by the feeding device, so the insert parts By simply feeding the insert parts into the parts feeder, the insert parts can be automatically press-fitted and fixed.With a simple configuration and without the use of expensive machinery or control equipment, efficiency is increased compared to conventional methods, and the desired press-fit finish is always achieved. can be obtained.

In the present invention, the feeding device for feeding the insert parts piece by piece, the reciprocating device for the chuck device, and the device for driving the chuck device in forward and backward directions are all constituted by air cylinders, so the mounting device of the present invention can be used in large numbers at the manufacturing site. When the air cylinders are arranged in parallel, each air cylinder can be driven by simply branching the air piping in parallel, which is economical since the device does not become large-scale as a whole.

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining an example of a metal insert mounting method, and FIG. 2 is a plan view of an embodiment of a metal insert mounting device for a synthetic resin molded product according to the present invention.
FIG. 3 is a perspective view of the insert component heating supply device in the above embodiment, FIG. 4 is a side view of the main part of the chuck device in the above embodiment, and FIG. 5 is a perspective view of the main part of another embodiment of the present invention. FIGS. 6A and 6B are a perspective view and a sectional view, respectively, of another example of the insert component heating supply device of the present invention. A... Insert component heating supply device, B... Insert component press-fitting device, 100... Parts feeder, 101... Alignment groove, 103... Rocking air cylinder, 200... Supply guide, 201... Fall path, 202... ... Connection path, 301 ... Heating block, 302 ... Heater, 304 ... Heating path, 30
5... Feeding device, 400... Limit switch of detection device, 401... Detection needle, 500... Chuck device, 503... Pick up button, 505...
Return spring, 600...Reciprocating device, 700,800
……Air cylinder.

Claims (1)

[Claims] 1. A parts feeder, a supply guide having a falling path that communicates with the supply port of the parts feeder at its upper part, and a heating block that has a horizontal heating path that communicates with one end of the lower end of this falling path and has a built-in heater. a feeding device consisting of an air cylinder for feeding the insert parts that have fallen into the heating path piece by piece to the other end side; an insert component heating and supplying device having a pick-up element formed therein, a chuck device having a pick-up element and supported so as to be movable toward and away from the ejection port, the chuck device being supported so that the pick-up element faces the ejection port; An insert part press-fitting device consisting of a reciprocating device consisting of an air cylinder that moves from a pick-up position to a press-fitting position separated by a predetermined distance from the pick-up position, and an air cylinder device that drives the chuck device in the forward and backward directions at the pick-up position and the press-fitting position. Metal insert mounting device for synthetic resin molded products.