JP3146410B2 - Jig for taking out cylindrical injection molded article and apparatus for taking out cylindrical injection molded article using the jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cylindrical injection molded product (hereinafter simply referred to as "product") molded by the injection molding machine during a period from a die removing step to a molded article dropping step of the injection molding machine. The present invention relates to a jig which is chucked by a vacuum operation of a vacuum device and taken out of the injection molding machine, and a device for taking out a cylindrical injection molded product using the jig. The present invention relates to a jig for taking out an article and an apparatus for taking out a cylindrical injection molded article capable of detecting whether or not the product has been chucked from an injection molding machine to the jig. Examples of the cylindrical injection molded products of the above-mentioned products include, for example, pipes and syringes for medical products, cylindrical products that require magnetism (products with magnetic surfaces), shaft bodies such as ballpoint pens and mechanical pens, There is a roller having a high surface roughness.

[0002]

2. Description of the Related Art Conventionally, as a means for taking out a product, which has been injection-molded by an injection molding machine, from the injection molding machine, the product is directly dropped from the injection molding machine directly to a product receiver, or the product is chucked by a mechanical chuck. Was taken out of the injection molding machine.

[0003]

However, with the above-described conventional product take-out means, there is a risk that the product may be damaged or the product may be deformed. Further, in the above-described conventional product take-out means, there is provided any means for detecting whether or not the product has been taken out of the injection molding machine (or whether or not the product has been left behind in the injection molding machine). Don't
There is a case where the mold is clamped while the product remains in the injection molding machine without being taken out. In this case, there is a possibility that the mold or the injection molding machine may be damaged or broken. further,
The above-mentioned product residue is remarkable when a large number of products are molded by one injection molding. An object of the present invention is to provide a jig for taking out a cylindrical injection molded product in which the surface of the product is hardly damaged, and a cylindrical injection molded product capable of detecting whether or not the product has been chucked from the injection molding machine to the jig. An object of the present invention is to provide a take-out device.

[0004]

According to the present invention, in order to achieve the above object, a jig main body has an outer diameter of a product (cylindrical injection molded product). A larger press-in hole and a chuck hole having an outer diameter substantially equal to the outer diameter of the product are continuously provided, and an air flow path is provided between the outer surface of the jig body and the inner surface of the chuck hole. It is characterized by being provided.

As a result, the jig for removing a cylindrical injection molded article according to the present invention is set in an injection molding machine after a die-cutting step, and then the product is extruded and pushed into a press-in hole. The product is dropped from the injection molding machine into the press-in hole and the chuck hole, and in this state, the product dropped from the injection molding machine is chucked in the chuck hole by the vacuum operation of the vacuum device.

As described above, according to the jig for removing a cylindrical injection molded product of the present invention, the product is pushed in, dropped, and chucked by the vacuum action in the continuously provided press-in hole and chuck hole. Therefore, the product can be dropped directly from the injection molding machine to the product receiver as it is, or the product can be compared with the conventional product removal means that has been removed from the injection molding machine by chucking the product with a mechanical chuck. Surface is hardly scratched.

In order to achieve the above object, the cylindrical injection molded product take-out apparatus of the present invention has one end of an air pipe connected to a main body for generating a vacuum action, and the other end of the air pipe. Is connected to the air flow path of the jig of the present invention described above, while a detecting means for detecting whether or not a product is chucked in the chuck hole of the jig of the present invention by the vacuum action of the apparatus main body is provided. It is characterized by being.

As a result, in the cylindrical injection molded product take-out apparatus of the present invention, when the apparatus main body is operated, the product from the injection molding machine is chucked in the chuck hole of the jig of the present invention by the vacuum action. Is done. At this time, whether or not the product has been chucked in the chuck hole of the jig of the present invention by the detecting operation of the detecting means, that is, whether or not the product has been taken out of the injection molding machine or whether or not the product has been left behind in the injection molding machine Can be detected.

As described above, the apparatus for removing a cylindrical injection molded article according to the present invention can detect whether or not the product has been removed from the injection molding machine. Damage or breakage of a mold or an injection molding machine can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a jig for taking out a cylindrical injection molded article of the present invention and an apparatus for taking out a cylindrical injection molded article using the jig will be described below with reference to the accompanying drawings. .

3 to 8, reference numeral 1 denotes an injection molding machine for molding a cylindrical injection molded product made of a synthetic resin, that is, a product 10. The injection molding machine 1 includes a fixed-side core mold (male mold) 12 having a convex portion 11, a movable-side cavity mold (female mold) 15 having a concave portion 13, a sprue, a gate 14, and the like. A product extrusion plate 16 is provided.

Next, the product 10 by the injection molding machine 1 described above is used.
Will be described. First, the cavity mold 15 is tightened, and the core mold 12, the cavity mold 15, and the product extrusion plate 16 form a cavity 17 in a space for molding the product 10. A melt molding material (for example, synthetic resin) 18 is press-filled into the cavity 17 via a sprue or a gate 14 (see FIG. 3).

Subsequently, when the molten molding material 18 is cooled and solidified to form the product 10, the cavity mold 15 is opened and the mold is removed (see FIG. 4). Then, the product extrusion plate 16 is moved to transfer the product 10 to the injection molding machine 1.
It is taken out from.

In FIGS. 1 and 2, reference numeral 2 denotes a jig body constituting a jig for taking out a cylindrical injection molded article of the present invention.
The jig body 2 has a press-fit hole 2 having a substantially Dharma shape.
One or more chuck holes 21 are provided. The press-in hole 20 has an outer diameter larger than the outer diameter of the product 10 and is a hole into which the product 10 is pushed.

On the other hand, the outer diameter of the chuck hole 21 is substantially equal to the outer diameter of the product 10, and the product 10 pushed and dropped into the press-in hole 20 is subjected to a vacuum operation of a vacuum device 3 described later. Is a hole to be chucked. The press-in hole portion 20 and the chuck hole portion 21 are provided continuously and have a Dharma shape as described above. The inner peripheral surfaces of the press-in hole 20 and the chuck hole 21 are smooth so as not to damage the product 10 when the product 10 is pushed and dropped in the press-in hole 20 and the chuck hole 21. It is finished in a natural surface.

The center O of the press-in hole 20 and the center O 'of the chuck hole 21 are on a straight line L, and the center O' of the chuck hole is in the vicinity of the press-in hole 20 and the chuck hole 2.
1 into the insertion hole portion 2 more than the line segment L 'connecting the corner portion 22 with the periphery of
0 is located on the center O side. That is, the product 10 that has been pushed into the push-in hole 20 and dropped is chucked in the chuck hole 21 by the vacuum operation of the vacuum device 3 described later.

The corner 22 between the periphery of the press-in hole 20 and the periphery of the chuck hole 21 is formed when the product 10 is pressed and dropped in the press-in hole 20 and the chuck hole 21. The device 10 is devised so as not to damage it (for example, chamfering or the like). An air flow path 23 is provided between the outer surface of the jig body 2 and the inner surface of the chuck hole 21.
Is provided.

A surface of the jig body 2 on the pressing side of the product 10 is provided with a chamfered portion 24 having a Dharma shape one size larger than the Dharma-shaped press-in hole 20 and the chuck hole 21. ing. This chamfered part 24 is the product 1
This is for preventing the product 10 from being damaged when the push-in / drop-down chuck 0 pushes and drops in the push-in hole 20 and the chuck hole 21. The chamfered portion 24
May be a circular shape, an elliptical shape, or the like, which is one size larger than the Dharma shape of the press-in hole 20 and the chuck hole 21, instead of the above-described Dharma shape.

In FIG. 1, reference numeral 3 denotes a vacuum device. The vacuum device 3 includes a device main body 30 that generates a vacuum action, an air pipe 31 having one end connected to the device main body 30 and the other end connected to the air flow path 23 of the jig main body 2, A detector (for example, a vacuum switch) 32 for detecting whether or not the product 10 is chucked in the chuck hole 21 of the jig main body 2 by a vacuum action of the apparatus main body 30; The device main body 30 is a so-called ejector-type vacuum generator that generates a vacuum suction force using compressed air from a compressor (not shown). The air pipes 31 are provided so as to branch from the trunk in the apparatus main body 30 by the number of the press-in holes 20 and the chuck holes 21 respectively. The detecting means 32
Is provided at the trunk of the air pipe 31 in the apparatus main body 30.

The jig for taking out a cylindrical injection molded article of the present invention and the apparatus for taking out a cylindrical injection molded article using the jig according to the present invention are constituted as described above. This will be described with reference to FIGS.

First, the cavity mold 15 is tightened, and the core mold 12, the cavity mold 15 and the product extrusion plate 1 are tightened.
6 forms the cavity 17 of the space for molding the product 10. A melt molding material (for example, synthetic resin) 18 is press-filled into the cavity 17 via a sprue or a gate 14 (see FIG. 3).

Subsequently, when the molten molding material 18 is cooled and solidified to form the product 10, the cavity mold 15 is opened and the mold is removed (see FIG. 4). Product 1 up to here
0, which is the same as the conventional product take-out means.

Next, after the die removing step, the jig body 2 of the jig for removing a cylindrical injection molded article of the present invention is set in the injection molding machine 1 (see FIG. 5). At this time, the center of the product 10 and the center O of the press-in hole 20 are matched.

Subsequently, the product pushing plate 16 is moved, and the product 10 is pushed out and pushed into the pushing hole 20 of the jig body 2 (see FIGS. 6 and 9).

Further, the product extrusion plate 16 is moved, and the product 10 is moved to the convex portion 11 of the core mold 12 of the injection molding machine 1.
The jig body 2 is dropped into the press-in hole 20 and the chuck hole 21 of the jig body 2 (see FIGS. 7 and 10).

Then, in the above state (the state shown in FIGS. 7 and 10), the apparatus main body 30 of the vacuum apparatus 3 is driven. Then, the air in the press-in hole 20 and the chuck hole 21 is sucked into the apparatus main body 30 through the air flow path 23 and the air pipe 31 by the vacuum action of the apparatus main body 30. Due to this vacuum removal, the product 10 dropped from the convex portion 11 of the core mold 12 of the injection molding machine 1 is chucked in the chuck hole 21 of the jig main body 2 (see FIGS. 8 and 11).

As described above, the jig for taking out the cylindrical injection molded article of the present invention in this embodiment is provided in the continuously provided press-in hole 20 and chuck hole 21.
Since the product 10 is pushed in, dropped and further chucked by vacuum action, the product 10 can be directly dropped from the injection molding machine directly to the product receiver, or the product can be chucked by a mechanical chuck and then removed from the injection molding machine. The surface of the product 10 is less likely to be scratched as compared with the conventional product taking-out means that has been taken out.

Further, in the apparatus for taking out a cylindrical injection-molded article of the present invention in this embodiment, the detecting operation of the detecting means 32, that is, all the products 10 are
Air is not flowed into the trunk of the air pipe 31 in the apparatus main body 30, and at least one product 10 is confined to the chuck hole of the jig main body 2 of the present invention. If not chucked in the section 21, air flows through the trunk of the air pipe 31 in the apparatus main body 30 (the flow rate of air differs depending on the number of unchucked products 10, but one product 10 If not chucked, the air flow is small but air is flowing). As described above, the detection unit 32 detects whether or not air is flowing in the trunk of the air pipe 31 in the apparatus main body 30. Since it is possible to detect whether or not the product 10 has been chucked in the chuck hole 21, that is, whether or not the product 10 has been removed from the injection molding machine 1 or has been left behind in the injection molding machine 1, the product 10 is subjected to injection molding. Machine 1
12 and 15 and injection molding machine 1
Can be prevented from being damaged or damaged.

If the detecting means 32 is provided in each of the branched air tubes 31, it is possible to detect at which position the product 10 is chucked.

As shown in the above-described embodiment, if a plurality (a large number) of the press-in holes 20 and the chuck holes 21 are provided, it is impossible to chuck and remove a large number of products 10 at one time.

The product 10 according to the above-described embodiment is
Is a hollow cylindrical shape having one end closed and the other end opened, but a cylindrical injection molded product removal jig of the present invention and a cylindrical injection molded product removal device of the present invention include: It can be applied to products of other shapes, that is, products of a cylindrical shape.

Further, a jig for removing a cylindrical injection molded article of the present invention and a cylindrical jig of the present invention are also used for molding a cylindrical product by an injection molding machine other than the injection molding machine 1 in the above-described embodiment. An injection molded product take-out device can be applied.

[0033]

According to the present invention, there is provided a cylindrical injection molded product removal jig in which a product is pushed in, dropped, and chucked by a vacuum action in a continuously provided press-in hole and a chuck hole. Therefore, the product can be dropped directly from the injection molding machine into the product receiver as it is, or the product can be chucked with a mechanical chuck and taken out of the injection molding machine compared with the conventional product removal means, Is hard to be damaged.

Further, the cylindrical injection molded product take-out apparatus of the present invention can detect whether or not a product has been taken out of the injection molding machine. And damage or breakage of the injection molding machine can be prevented beforehand.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a cylindrical injection molded product take-out jig of the present invention and a cylindrical injection molded product take-out apparatus using the jig. It is explanatory drawing which showed the outline of the take-out apparatus of this invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a partial longitudinal sectional view of the injection molding machine showing an injection molding step.

FIG. 4 is a partial longitudinal sectional view of the injection molding machine showing a die cutting step.

FIG. 5 is a partial longitudinal sectional view of the injection molding machine and the ejection jig showing a state in which the ejection jig of the present invention has been set in the injection molding machine after the die removing step.

FIG. 6 is a partial longitudinal sectional view of the injection molding machine and the ejection jig showing a state where a product is extruded and pushed into the press-in hole of the ejection jig of the present invention.

FIG. 7 is a partial longitudinal sectional view of the injection molding machine and the ejection jig showing a state where a product is dropped from the injection molding machine to the ejection jig of the present invention.

FIG. 8 is a partial vertical cross-sectional view of the injection molding machine and the ejection jig showing a state where a product dropped from the injection molding machine is chucked by the vacuum action in the chuck hole of the ejection jig of the present invention. is there.

FIG. 9 is a sectional view taken along line IX-IX in FIG. 6;

FIG. 10 is a sectional view taken along line XX in FIG. 7;

11 is a sectional view taken along line XI-XI in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection molding machine 10 Product (cylindrical injection molded product) 12 Core mold 15 Cavity mold 2 Jig main body 20 Press-in hole part 21 Chuck hole part 23 Air flow path 3 Vacuum device 30 Device main body 31 Air pipe 32 Detecting means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-226750 (JP, A) JP-A-2-281918 (JP, A) JP-A-56-1939 (JP, A) JP-A 8- 132445 (JP, A) JP-A-7-290525 (JP, A) JP-A-5-50441 (JP, A) JP-A-5-337968 (JP, A) Japanese Utility Model Application Showa 60-83714 (JP, U) Hira 5-49322 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 45/42

Claims (2)

(57) [Claims] 1. A cylindrical injection molded product molded by said injection molding machine is chucked by a vacuum operation of a vacuum device during a period from a die removing step of the injection molding machine to a molded product dropping step. A jig body set in the injection molding machine after the die-cutting step, provided on the jig body, the outer diameter is larger than the outer diameter of the cylindrical injection molded product, A press-in hole into which the injection-molded product is pushed in, and the jig body is provided continuously with the press-in hole, and has an outer diameter substantially equal to the outer diameter of the cylindrical injection-molded product, and is pushed into the press-in hole. The injection molded article that has been dropped and dropped is provided between a chuck hole for chucking by a vacuum action of a vacuum device, and an outer surface of the jig body and an inner surface of the chuck hole, and the air from the vacuum device is removed. A jig for removing a cylindrical injection molded product, comprising: an air flow path to which a pipe is connected. 2. An apparatus for chucking a cylindrical injection molded product molded by the injection molding machine and removing the molded product from the injection molding machine during a period from a die removing process of the injection molding machine to a molded product dropping process. A cylindrical injection molded product take-out device comprising: a jig described below; and a vacuum device described below. The jig is provided on the jig main body, which is set in the injection molding machine after the die-cutting step, and the jig main body has an outer diameter larger than the outer diameter of the cylindrical injection molded product. A press-in hole portion into which the press-in hole is to be inserted, the jig body is provided continuously with the press-in hole portion, the outer diameter is substantially equal to the outer diameter of the cylindrical injection molded product, and is pushed into the press-in hole portion; A vacuum hole is provided between the outer surface of the jig body and the inner surface of the chuck hole, and the air pipe from the vacuum device is connected to the chuck hole where the dropped injection molded article is chucked by the vacuum action of the vacuum device. Air flow path to be provided. The vacuum device includes a device main body that generates a vacuum effect, an air pipe having one end connected to the device main body and the other end connected to an air flow path of a jig, and the injection device being subjected to the vacuum operation of the device main body. Detecting means for detecting whether or not the molded product is chucked in the chuck hole of the jig;