JPH11227010A - Molding processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To take out respective plug joints in a state arranged if possible when a plug joint connection member is taken out of an injection molding apparatus. SOLUTION: A correction part 80 having notched parts 83 corresponding to respective plug joints formed thereto is preliminarily attached to the chuck part 72 grasping a plug joint connection member. The notch parts 83 are arranged at the positions surrounding the intermediate parts of the respective plug joints of the plug joint connection member grasped by the chuck part 72 so as to separate them by a predetermined interval and, when the plug joints are bent by predetermined quantity or more to be deformed, the plug joints come into contact with the notch parts 83 to be prevented from more bending deformation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding apparatus for transferring a connected columnar molded product taken out of an injection molding apparatus to a processing apparatus and performing finishing for each columnar molded article.

[0002]

2. Description of the Related Art A plug joint for electrically connecting a high tension cable from an ignition coil to a spark plug in a columnar molded product such as an internal combustion engine of an automobile or the like is configured as shown in FIG.

The plug joint 2 is formed of a thermosetting resin, and has a circumferential projection 12 on the upper side of the large diameter portion 10.
Is formed, and a circumferential projection 22 is formed at a substantially axially intermediate portion of the small-diameter portion 20 that is continuous below the large-diameter portion 10. Further, a semi-elliptical opening 24 is formed on one side below the peripheral protrusion 22.

[0004] As shown in FIGS. 2 and 3, a plurality of such plug joints 2 are molded as a plurality of plug joint connectors 48.

That is, the plug joint connector 48
Is connected at one end of each of the four plug joints 2 on the right and left sides arranged at equal intervals to a rod-shaped runner portion 40 (a portion corresponding to a runner flow path of a mold) in a comb-teeth shape via a connection portion 42. Have been. Further, a rod portion 44 (a portion corresponding to an ejection port of a mold) is provided so as to protrude from the central portion of the runner portion 40 to one side of the parallel surfaces of the plug joints 2.

[0006] Such a plug joint connector 48
Is taken out from a pair of opened molds by gripping the rod portion 44, and then transferred to a predetermined finishing device, where it is fixed for each plug joint 2 and deburred, respectively. And finish processing such as cutting from the runner portion 40 of the plug joint 2.

[0007] As a technique related to this, Japanese Patent Application No. Hei 8
No. 192183.

[0008]

However, as described above, the following problem may occur when the plug joint connector 48 is removed by gripping the rod portion 44 between a pair of dies. .

That is, the plug joint connector 48 between the pair of dies has a high temperature and a low rigidity immediately after injection molding. Therefore, the plug joints 2 immediately after being removed from the mold may be lowered due to their own weight or the like, and the plug joints 2 may be irregularly arranged in parallel with the runner section 40.

Once deformed in this way, it is difficult to correct the position of the plug joint connector 48 when it is subsequently transferred to the finishing machine, and here it will be fixed for each plug joint 2. However, the fixing may not be performed properly, or the fixing member may interfere with the plug joint 2 and cause the plug joint 2 to be chipped or damaged.

Therefore, the present invention has been made to solve the above-mentioned problem. When a columnar molded product is taken out from an injection molding apparatus, it is possible to take out the columnar molded products in a state where they are aligned as much as possible. It is an object of the present invention to provide a possible forming apparatus.

[0012]

According to a first aspect of the present invention, there is provided a molding apparatus according to the present invention, wherein one end of each of a plurality of columnar molded products arranged in parallel has a comb tooth shape at a runner portion. A columnar molded product connected body, which is connected to the runner portion and protrudes from the runner portion to one side of the parallel surface of each of the columnar molded products and is provided with a rod portion, is injection-molded by an injection molding device. A molding processing device for taking out the columnar molded product linked body and transferring it to the next finishing device, and performing finishing processing for each columnar molded product with the finishing device, wherein the dividing surface along the vertical direction Injection molding the columnar molded product connected body between a pair of molds having, and laying each of the columnar molded products along the horizontal direction on one side of both opened molds, and Protruding from mold on one side Was said columnar molding the coupling body in a posture is left, and an injection molding device for releasing extruded by the respective ejector pin each columnar molded article of the columnar molded coupling body,
A chuck portion capable of gripping the rod portion and a plurality of cutouts having a shape corresponding to one side of the outer peripheral shape of the columnar molded product correspond to each of the columnar molded products at the tip of a transfer arm movable in a three-dimensional direction. A straightening portion formed at an interval to be formed, and by gripping the rod portion of the columnar molded product linked body left in the one-side mold by the chuck portion, the notch portions of the straightening portion are In a state in which the columnar molded products are arranged so as to be separated from and surrounded by one side of each columnar molded product, the columnar molded product linked body is taken out from the injection molding apparatus in response to the extrusion of each of the columnar molded products by the extrusion pin. A transfer device for transferring the product to the next finishing device, and a finishing device for performing a finishing process by fixing the linked columnar product transferred by the transfer device for each of the columnar products.

[0013] When the transfer device transfers the connected columnar molded product taken out of the injection molding device to the next finishing device, the transferring device transfers the connected columnar molded product to the next finishing device. The parallel surfaces of the columnar molded products may be transported in a posture along the horizontal direction and in a posture in which the straightening unit is arranged below the connected columnar molded product.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below of a molding apparatus according to an embodiment of the present invention.

The plug joint 2 to be processed is
And a plug joint connector 4 in which a plurality of them are connected
8 has the same configuration as that shown in FIGS. 1 to 3, and a description thereof will be omitted here.

As shown in FIGS. 4 and 5, the molding apparatus includes an injection molding apparatus 50 for injection-molding the plug joint assembly 48, a burr generated in the plug joint 2 and a plug joint. And a transfer device 7 for removing the plug joint connector 48 from the injection molding device 50 and transferring it to the finish processing device 100.
0.

The injection molding apparatus 50 has a fixed portion 54 provided on one side of a rectangular main body 52 in a plan view and a movable portion 60 provided on the other side.

A fixed mold 56 is provided on one side of the fixed section 54, while a movable mold 61 is provided on the movable section 60 so as to face the fixed mold 56.

The movable mold 61 is provided so as to be movable toward and away from the fixed mold 56 by movable means such as a cylinder. Then, in a state where the movable mold 61 is moved closer to the fixed mold 56 side and the molds 56 and 61 are clamped, the heated and fluidized resin supplied by an extruder (not shown) is supplied to the movable mold 61 side. The plug joint connector 48 is injected into the two molds 56 and 61 to form the plug joint connector 48 by injection molding.

When the movable mold 61 is moved away from the fixed mold 56 and the fixed molds 56 and 61 are opened, the plug joint connector 48 is released from the movable mold 61 and the fixed mold 56 is released. It is configured to remain on the side. At this time, each mold surface of the fixed mold 56 and the movable mold 61 is in a posture in which each plug joint 2 of the plug joint connector 48 is laid down in the horizontal direction, and the plug left on the fixed mold 56 side. The rod portion 44 is formed so as to project from the joint connector 48 toward the movable mold 61. (Refer to the two-dot chain line in FIG. 4, which shows the state immediately after the plug joint connector 48 is taken out from the fixed mold 56).

As will be described later, the fixed die 56 is provided with an extruding pin 57 (see FIG. 9) corresponding to each plug joint 2, and the plug joint connecting body 48 is extruded by each extruding pin 57. Thereby, the plug joint connector 48 is configured to be released from the fixed mold 56.

The transfer device 70 for taking out the plug joint assembly 48 from the injection molding device 50 is a kind of multi-axis robot as shown in FIGS. 4 and 5, and as shown in FIG. A chuck portion 72 for holding the rod portion 44 of the plug joint connector 48 and a correction portion 8 at the distal end of the transfer arm 71 movable in the three-dimensional direction of the joint.
0 is provided.

The chuck portion 72 has a pair of left and right gripping pieces 73 provided at the distal end of a base 75 fixed to the transfer arm 71 so as to be freely opened and closed by a cylinder or the like (not shown).
A concave portion 74 corresponding to the outer peripheral shape of the rod portion 44 is formed on each opposing side of each gripping piece 73. And
By closing both grip pieces 73, the rod portion 44 can be gripped between the concave portions 74.

The straightening portion 80 is formed by a vertical plate portion 82 from a tip end of a parallel plate portion 81 attached to one surface of the base portion 75.
Are bent so as to rise in a substantially L-shape, and cutouts 83 are formed at eight locations along the edge of the vertical plate portion 82. Each notch 83 is finished in a shape corresponding to the outer peripheral shape of the small diameter portion 20 of the plug joint 2, and is formed at substantially the same interval as the arrangement interval of the plug joints 2 connected to the plug joint connector 48. I have.

The straightening section 80 assumes the position shown in FIG. 7 with respect to the plug joint connector 48 held by the chuck section 72.

That is, when the plug joint connector 48 is gripped by the chuck portion 72, the straightening portion 80 is positioned at a position closer to the base end than the gripping portion 73 grips the rod portion 44. In other words, it is located in the longitudinal middle part of the small-diameter portion 20 of the plug joint 2, and at this position, each notch 83 is
Are set to surround one side at a predetermined interval H (for example, about 2 to 5 mm).

The operation of the thus-configured transfer device 70 will be described. As shown in FIG. 5, first, the molds 56 and 61 of the injection molding device 50 are opened in a state where the molds are opened.
The chuck 72 is moved between the two dies 56 and 61. At this time, in a posture in which the correction unit 80 faces the fixed mold 56 side,
The rod portion 44 extending from the plug joint connector 48 of the fixed mold 56 is sandwiched between the opened grip pieces 73. Then, in this state, as shown in FIG. 8, both grip pieces 73 are closed and the rod portion 44 is gripped.

Next, as each of the push pins 57 on the fixed mold 56 side protrudes and each plug joint 2 is released from the mold surface, the chuck portion 72 is moved to the fixed mold 56.
From the plug joint connector 4
8 is removed from the injection molding device 50.

Thereafter, the chuck portion 72 is rotated in the space between the two dies 56 and 61, and as shown in FIG. 7, the parallel surfaces of the respective plug joints 2 of the plug joint connector 48 are arranged on a horizontal plane. At the same time, the posture is changed to the posture in which the straightening portion 80 is arranged below the plug joint connector 48. Then, after the plug joint connector 48 is swung up and down between the two dies 56 and 61,
Retract from 61. In addition. The reason why the plug joint connector 48 is swung up and down immediately after being taken out of the fixed mold 56 to perform airflow is to remove dust during molding.

Then, the transfer arm 71 is moved to the transfer device 70 while the plug joint connector 48 is kept in the above-described posture.
The plug joint connector 48 is transferred to the finishing device 100 by horizontally rotating the main body of the plug joint. After that, the plug joint connector 48 is changed from the runner portion 40 to a posture in which the plug joint 2 stands upright, and is transferred to the finishing device 100.

As shown in FIG. 10, the finishing apparatus 100 includes a pair of left and right chuck portions 110 for chucking the plug joint connector 48 transferred by the transfer mechanism 70.
And a pair of upper fixing pins 120 and lower fixing pins 130 that sandwich and hold each plug joint 2 of the plug joint connector 48 from above and below, respectively, and disconnect the plug joint 2 and the runner part 40 of the plug joint connector 48. A cutting mechanism 141 for separating the plug joints and a burr removing mechanism 150 for removing the burr 34 of each plug joint 2 are provided. Here, the reason why the burr removing mechanism 150 is provided is that the burr can be easily removed because the rigidity of the plug joint 2 immediately after taking out from the injection molding apparatus 50 is low.

The chuck portion 110 is driven to close and open left and right by driving means (not shown), and once chucks the plug joints 48 transferred by the transfer mechanism 70 from the left and right of the plug joints 2 located at both ends thereof. It is held at a predetermined position in the finishing device 100.

As shown in FIGS. 10 and 11, the upper fixing pin 120 is connected to the large-diameter portion 10 of the plug joint 2.
A core deburring portion 126 having an outer diameter substantially the same as the inner diameter of the small diameter portion 20 of the plug joint 2 extends downward from the base 122 having an outer diameter larger than the inner diameter of the plug joint 2. Tapered engaging portion 1 whose outer diameter decreases gradually downward between base portion 122 and core deburring portion 126
24 are formed. Eight upper fixing pins 120 are arranged in parallel in the left-right direction of the finishing apparatus 100 in correspondence with each plug joint 2 of the plug joint connector 48 (only one is shown in FIG. 10), and a drive not shown is shown. It is configured to be driven up and down by means.

On the other hand, the lower fixing pin 130 has an outer diameter smaller than the inner diameter of the small diameter portion 20 on the upper surface side of the base 132 finished to be insertable into the small diameter portion 20 of the plug joint 2. A part 136 is formed. Eight lower fixing pins 130 are provided in the left-right direction corresponding to the plug joint 2 of the plug joint connector 48, and are commonly connected to the connecting punches 140 at the rear end side of the base 132. Then, by driving the connecting punch 140 up and down by driving means (not shown), the base 132 is inserted into the opening 24 of the plug joint 2,
The insertion portion 136 of each lower fixing pin 130 is configured to be inserted into and removed from the plug joint 2 from below. When the lower fixing pins 130 are inserted from below the plug joint 2, the lower fixing pins 1
30 is set to a height dimension that does not protrude from the lower end of the plug joint 2.

When the upper fixing pins 120 and the lower fixing pins 130 are driven to approach each other in a state where the plug joint connector 48 is chucked by the chuck portion 110, as shown by the broken line in FIG. Are engaged with the upper end of the plug joint 2, and the lower fixing pins 130 are engaged with the lower end of the plug joint 2, so that the respective plug joints 2 are held in parallel at predetermined positions. You. At this time, the burr 38 is removed such that the tip of the core burr removing portion 126 of the upper fixing pin 120 pushes the burr 38 formed on the inner peripheral surface of the plug joint 2 downward.

The plug joints 2 thus held in parallel are separated from the runner section 40 by the cutting mechanism 141.

That is, the cutting mechanism 141 has a disk-shaped diamond cutter 142 attached to a rotating shaft 148 of a motor 146, and is supported by a driving means (not shown) so as to be movable in the left-right direction. Then, the cutting mechanism 141 is moved in the left-right direction while rotating the diamond cutter 142 in a state where each plug joint 2 of the plug joint connector 48 is held by the upper fixing pin 120 and the lower fixing pin 130 as described above. Thereby, the connecting portion 42 of the plug joint connecting body 48 is cut, and each plug joint 2 is separated from the runner portion 40. The runner part 40 and the rod part 4 thus separated.
4 is discharged to the discharge unit 180.

The burr generated on the outer peripheral surface of each plug joint 2 held by the upper fixing pin 120 and the lower fixing pin 130 is removed by the burr removing mechanism 150. The burrs are fixed mold 56 and movable mold 6
It occurs due to the gap in the combination part with 1.
It occurs on both left and right sides of the plug joint 2 along its axial direction.

As shown in FIG. 10, the burr removing mechanism 150 includes a plurality of burr removing sheets 152 for removing the burr formed on the outer peripheral surface of the plug joint 2, and each of the burr removing sheets 152 is moved in the left-right direction. And a comb-shaped support 166 for supporting the comb-shaped support 16 in parallel
6 is provided with an advance / retreat driving means 170 which is appropriately connected to the back surface and drives the comb-like support 166 forward and backward in the front-rear direction.

The burr-removing sheet 152 is made of a resin (for example, urethane) which has flexibility (a degree softer than the plug joint 2), heat resistance (a degree that can withstand high temperatures immediately after being taken out of the injection molding apparatus 50), and abrasion resistance (for example, urethane). Resin), and one side 152a of each deburring sheet 152 is finished in a shape corresponding to the outer peripheral surface contour shape of each plug joint 2 along the axial direction. The distance between the opposing sides 152 a of each of the adjacent deburring sheets 152 is set to be slightly smaller than the outer diameter of the plug joint 2.

Then, by driving the reciprocating drive means 170, each of the burr removing sheets 152 together with the comb-like support 166 is provided.
Is advanced, each side 152 of each deburring sheet 152
a is passed while elastically contacting the burrs on the outer peripheral surface of each plug joint 2, and the burrs are removed.

Each of the plug joints 2 from which burrs have been removed as described above is connected to the upper fixing pin 120 and the lower fixing pin 13.
When the holding by 0 is released, it falls onto the product outlet 184 and is taken out.

According to the molding apparatus configured as described above, with the plug joint connector 48 held by the chuck portion 72, the straightening portion 80 is positioned at the longitudinally intermediate portion of the small diameter portion 20 of the plug joint 2. Since each of the notches 83 is located so as to surround one side of the small diameter portion 20 of each plug joint 2 at a predetermined interval H, as shown in FIG. Linked body 4
Immediately after the plug joint 2 is taken out, even if each plug joint 2 is lowered due to its own weight or the like, the plug joint 2 deformed by a certain amount or more abuts the notch 83 to prevent further deformation. This prevents excessive bending deformation.
Therefore, when removing the plug joints 2 from the injection molding apparatus 50, it is possible to remove the plug joints 2 in a state where they are aligned as much as possible.

Further, when the taken-out plug joint body 48 is transferred to the finishing apparatus 100 next time, the parallel surfaces of the plug joints 2 are arranged in a horizontal position and are positioned below the plug joint body 48. Correction section 8 on the side
Since the transfer is performed in the posture where 0 is arranged, excessive bending deformation of each plug joint 2 at the time of transfer is prevented as in the case described above. Therefore, at the time of transfer, the plug joints 2 can be transferred to the next finishing device 100 in a state where they are aligned as much as possible.

Accordingly, since the plug joints 2 are transferred to the finishing apparatus 100 in a state where they are aligned in the original shape as much as possible, the finishing apparatus 10
0, when the chucks 110 attempt to chuck the plug joints 2 located at both ends of the plug joint connector 48, or thereafter, each of the plug joints 2 is individually connected to the upper fixing pin 120 and the lower fixing pin 13.
0 when trying to fix by each plug joint 2
Are excessively deformed and their chucking and fixing are not performed well, or the chucking portions 110,
It is possible to effectively prevent the upper fixing pin 120 and the lower fixing pin 130 from interfering with the plug joint 2 and causing the plug joint 2 to be damaged or chipped.

The position where each notch 83 surrounds each plug joint 2 is located at the large diameter portion 10 of the plug joint 2.
The position may be on the side, that is, any position may be used as long as the position is at some distance from the runner section 40.

In the above embodiment, the case where the non-machining object is the cylindrical plug joint 2 has been described.
The present invention can be used for other columnar molded products in general. And even when the columnar molded product is not hollow, in the finishing apparatus 100, it is necessary to fix each columnar molded product by sandwiching the columnar molded product from the upper and lower sides or both sides. Can be demonstrated.

Further, the finishing apparatus 10 of the above embodiment
In the case of 0, the cutting of each plug joint 2 from the runner portion 40 and the deburring of each plug joint 2 are finished, but other finishing, for example, cutting of a necessary portion may be performed. .

[0049]

As described above, according to the molding apparatus of the first aspect of the present invention, a plurality of notches having a shape corresponding to one side of the outer peripheral shape of the columnar molded product correspond to each columnar molded product. When the chuck part grips the rod part, the notch part is one side exposed from the mold of each columnar molded product and surrounds a part separated from the runner part by a predetermined distance when the chuck part grips the rod part. Because there is a straightening unit in,
When the columnar molded product is taken out of the injection molding apparatus, even if each columnar molded product may fall downward due to its own weight or the like, the deformed product by a certain amount or more is applied to the notch of the straightening unit. Due to the contact, excessive bending deformation is prevented. Therefore, when taking out the columnar molded product connected body from the injection molding apparatus,
It becomes possible to take out each columnar molded product in a state where they are aligned as much as possible.

Further, when the transfer device transfers the connected columnar molded product taken out of the injection molding device to the next finishing device, the transfer device transfers the connected columnar molded product to the next finishing device.
When the parallel surfaces of the columnar molded products are transported in a posture along the horizontal direction and in a posture in which the straightening unit is arranged below the columnar molded product connected body, when the columnar molded product connected body is transferred to the finishing machine, Similarly to the above case, since excessive bending deformation of each columnar molded product is prevented, each columnar molded product is taken out of the injection molding device in a state where it is aligned as much as possible, and transferred to the next finishing device. It is possible to do.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a plug joint which is an object to be processed.

FIG. 2 is a front view showing a plug joint connection body to which the plug joint is connected.

FIG. 3 is a bottom view showing the plug joint connector according to the first embodiment;

FIG. 4 is a perspective view showing a molding apparatus according to an embodiment of the present invention.

FIG. 5 is a plan view showing the molding apparatus of the above.

FIG. 6 is a perspective view showing a chuck unit and a straightening unit.

FIG. 7 is a side view showing a state where the plug joint connector is gripped by the chuck portion.

FIG. 8 is a view showing one process at the time of removing the plug joint connection body.

FIG. 9 is a view showing another process at the time of removing the plug joint connection body.

FIG. 10 is a schematic perspective view showing a finishing device.

FIG. 11 is an enlarged view of a main part of the finishing device.

[Explanation of symbols]

 2 Plug joint 40 Runner part 44 Rod part 48 Plug joint connector 50 Injection molding device 56 Fixed die 57 Extrusion pin 61 Movable die 70 Transfer device 71 Transfer arm 72 Chuck portion 80 Straightening portion 83 Notch portion 100 Finishing device

Claims (2)

[Claims] An end of each of a plurality of columnar molded products arranged in parallel is connected to a runner portion in a comb shape, and the rod protrudes from the runner portion to one side of a parallel surface of each of the columnar molded products. The columnar molded product connected body provided with the parts is injection-molded by an injection molding device, the columnar molded product connected product is taken out from the injection molding device and transferred to the next finishing device, and each of the columnar products is processed by the finishing device. A molding apparatus for performing finishing processing for each molded article, wherein the columnar molded article connected body is injection-molded between a pair of dies having a dividing surface along a vertical direction, and both opened molds are provided. On one side of the mold, the columnar molded product is left with the respective columnar molded products laid down in the horizontal direction and the rod portion protruding from the one side mold. Remove each columnar molded product An injection molding device for extruding and releasing a mold by means of an extrusion pin, a chuck portion capable of gripping the rod portion at the tip of a transfer arm movable in a three-dimensional direction, and one side of the outer peripheral shape of the columnar molded product A plurality of notches having the same shape as the columnar molded product and a straightening portion formed at a corresponding interval, and the rod portion of the columnar molded product linked body left in the one side mold is the chuck portion. By holding the notches, the cutouts of the straightening section are arranged on one side of each of the columnar molded products so as to be separated from each other by a predetermined distance and correspond to the extrusion of each of the columnar molded products by the extrusion pin. A transfer device for taking out the connected columnar molded product from the injection molding apparatus and transferring it to the next finishing device; and fixing the connected columnar molded product transferred by the transfer device for each of the columnar molded products. Finishing Molding apparatus and a finishing apparatus for performing. 2. When the transfer device transfers the connected columnar molded product taken out of the injection molding device to the next finishing device, the transfer device transfers the connected columnar molded product to the parallel surface of each of the columnar molded products. 2. The molding apparatus according to claim 1, wherein the correcting unit is transferred in a posture along the horizontal direction and in a posture in which the straightening unit is arranged below the connected columnar molded product.