JPH04369516A - Molding equipment - Google Patents

Abstract

PURPOSE:To facilitate operation by shortening a molding cycle while increasing the speed of the setting of a plurality of insert parts and the extraction operation of molded forms when the insert parts are molded simultaneously. CONSTITUTION:In a molding equipment, in which a bottom force body 8 is slid outside a mold and molded forms are extracted and insert parts are mounted at every shot of molding, in which insert parts 1, 2, 3 are molded simultaneously by the mold consisting of a top force 9 and a bottom force 8, an ejector plate 10 and an ejector pin 20 unified with the ejector plate 10 are installed to the bottom force body 8. A region, in which the ejector plate 10 moved by the sliding of the bottom force body g is shifted, is provided with a push-up means 12, and the ejector pin 20 and the ejector plate 10 are pushed up by the push-up means 12 by sliding the bottom force body 8 and the molded forms are ejected.

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 molding insert parts using a molding die consisting of an upper mold and a lower mold.

0002

[Prior Art] As an injection molding method for this type of insert product, the technology disclosed in Japanese Patent Application Laid-Open No. 54-148053 is known. According to this prior art, in continuous hoop insert molding, after molding, the molded product In order to progressively transport the material out of the mold, the lower mold was moved outside the molding machine, the molded product was ejected, and the lower mold was returned to the molding machine to continue molding.

0003

[Problem to be solved by the invention] However, conventionally,
When molding small insert-molded parts, the movable mold is fixed on the mold clamping line, so it is obstructed by the molding machine's tie bars, making it extremely difficult to set the insert parts. As a result, mistakes in setting the insert parts occurred, setting took a long time, and it was difficult to confirm that the molded product had been removed.

[0004] Furthermore, when the mold was made to be able to be moved from the mold clamping line, there were problems in that it was not possible to eject the molded product at hand, and that the structure became complicated because the ejector device had to be moved as well. . This invention was made to solve such problems, and its purpose is to shorten the molding cycle when multiple insert parts are molded at the same time, and to improve the setting of insert parts and molded products. The purpose is to speed up the removal process and make the process easier.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for moving the lower mold body out of the mold for each molding shot in which insert parts are simultaneously molded using a mold consisting of an upper mold and a lower mold. In the molding device, the lower mold body is provided with an ejector plate and an ejector pin integrated therewith, and the ejector plate is moved by sliding of the lower mold body. The molded product is characterized in that a pushing up means is provided in a region where the lower mold body is slid, and the pushing up means pushes up the ejector pin and the ejector plate to eject the molded product.

[0006] By providing a rod having a spiral groove on the template of the upper mold, and providing a rack on the lower mold body that moves through a gear that engages with the groove and rotates, the lower mold can be opened and closed. The feature is that the mold body can be slid.

[0007] Two lower mold bodies are connected and a pushing up means is provided on a part of the moving surface of each ejector plate, so that when one lower mold body is in the mold, the other lower mold body is in the mold. The feature is that the molding is performed alternately so that the parts are placed outside the mold.

[0008] In a molding device in which insert parts are simultaneously molded and the lower mold body is slid out of the mold to take out the molded product and attach the insert parts for each molding shot, an ejector plate and an ejector plate integrated therewith are attached to the lower mold body. A rod having a helical groove is provided in the template of the upper mold, and a bush is provided that engages with the groove to convert the vertical movement of the rod into rotational movement of the lower mold main body. By providing a push-up means in a region where the ejector plate moves as the mold body rotates, the lower mold body is rotated when opening and closing the mold, and the ejector pin and the ejector plate are pushed up by the push-up means. The molded product is ejected by pressing the button.

[0009] The present invention is characterized in that means is provided for converting only the rotational movement of the bush in one direction into the rotational movement of the lower mold body.

0010

[Operation] With the above structure, the present invention is capable of ejecting the molded product and mounting the insert parts by sliding the lower mold body when molding the insert parts at the same time, and the ejector plate and the ejector are attached to the lower mold body. It has a pin. When the lower die main body slides, a pushing up means is provided in the movement area of the ejector plate, and the pushing up means pushes up the ejector pin and the ejector plate to eject the molded product. In other words, since the molded product is ejected after sliding the lower mold, it is possible to reduce molding cycle losses without requiring multiple steps. It is possible to improve the workability of inserting into the mold and reduce setting errors.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. Note that the same members are designated by the same reference numerals throughout the drawings. As shown in Figure 1, the size is several meters.
When injection molding an inserted product consisting of extremely small insert parts 1, 2, and 3 of about m size and a resin part 4 to be injection molded into these, the three types of insert parts are placed one by one in a predetermined place in the mold. Insert and form.

FIGS. 2 and 3 show the injection molding die of Example 1, in which the upper mold body 9 and the lower mold body 8 form the shape of the molded product.
is positioned by a guide pin 18 provided in the upper mold body 9 and a guide pin hole 19 provided in the lower mold body 8, and the lower mold body 8 is positioned between the lower mold plate 7 and the spacer block 14.
and is held by a guide rail 13.

The temporary positioning is performed using balls 15 and 16 provided on the lower mold plate 7 that move in and out by external force, and a recess provided on the lower mold body 8. The molded product is ejected from the lower mold body 8 which is integrated into the ejector plate 10 by a handle 17.
The inclined portion 1 provided on the ejector plate 10 by moving the
1 and an inclined block 12.

Next, the operation of this embodiment will be explained. FIG. 4 shows a state in which the mold is opened after molding. FIG. 5 shows that after opening the mold, by pulling the handle 17 provided on the lower mold body 8 integrated with the ejector plate 10, the lower mold body 8 is moved out of the molding machine while being guided by the guide rail 13, and the inclined block 12 is moved. A state in which the ejector plate 10 begins to climb the slope is shown.

FIG. 6 shows that the ejector pin 20 provided on the ejector plate 10 is moved by sliding the slope of the ejector plate 10 on the slope of the inclined block 12.
shows the state in which the molded product 4 is protruded. In FIG. 7, the lower die main body 8 is further moved and the ejector pin 20 is lowered, and then the insert part is set. FIGS. 8(a) and 8(b) show that the block 6 (see FIG. 3) is moved and the insert parts 5 (1, 2,
3) is set.

Next, the lower mold main body set is returned to the mold open state shown in FIG. 4, and temporarily positioned on the lower mold plate 7 using balls 15 and 16. Thereafter, by clamping the mold, accurate positioning is performed using the guide pins 18 of the upper mold body 9 and the guide pin holes 19 of the lower mold body 8. Thereafter, molding is performed in the mold closed state shown in FIG. The above constitutes one molding cycle.

FIGS. 9 and 10 show an injection mold according to a second embodiment, in which an upper mold body 9 and a lower mold body 8 form a molded product shape. In addition, a rack 21 is attached to the lower die main body 8.
A gear 22 meshing with the gear 22 meshes with a spiral groove of a rod 24 provided on the upper mold plate 23, and when the mold is opened, the molded product is ejected from the lower part connected to the ejector plate 10. This is done by moving the mold body 8 using the inclined portion 11 and inclined block 12 provided on the ejector plate 10.

Next, the operation of this embodiment will be explained. FIG. 11 shows the state in the middle of opening the mold after molding, and the upper mold plate 2
When the rod 24 provided on the rod 3 moves upward, the gear 22 provided on the rod 24 engages in a spiral manner.
This shows a state in which the ejector plate 10 integrated with the lower mold body 8 moves with the movement of the rack 21, and the ejector plate 10 begins to climb up the slope of the inclined block 12.

FIG. 12 shows that when the mold opening further progresses, the ejector plate 10 moves in the same manner as described above, and the slope of the ejector plate 10 slides on the slope of the inclined block 12, so that A state in which the ejector pin 20 projects the molded product 4 is shown. In FIG. 13, the mold opening progresses further, the ejector plate 10 moves in the same manner as described above, and the ejector pin 20
After lowering, set the insert parts. At this time,
As shown in FIGS. 8(a) and 8(b), in order to easily and accurately set the insert parts, the block 6 is moved and the insert parts 5 are set.

Next, by clamping the mold, the lower mold body moves to its original position as shown in FIGS. 13, 12, 11, and 10, and then molding is performed. The above is one molding cycle.

FIGS. 14 and 15 show an injection mold of Example 3. In this embodiment, an upper mold main body 9 and a lower mold main body 8-1 that form a molded product shape are connected to guide pins 18 provided in the upper mold main body 9 and guide pin holes provided in the lower mold main body 8-1. The lower mold body 8-2 is provided with an ejector plate 10-2 connected to the lower mold body 8-1 positioned by the lower mold body 19, and the lower mold bodies 8-1 and 8-2 are
It is held by the lower mold plate 7, spacer block 14, and guide rail 13.

[0022] The temporary positioning is performed by moving the balls 15, which move in and out by external force provided on the lower mold plate 7, and the lower mold bodies 8-1, 8-.
This is done in the recess provided in 2. The molded product is ejected by using the handle 17 to move the lower mold bodies 8-1 and 8-2, which are integrated into the ejector plates 10-1 and 10-2, so that the inclined portion 11 and the inclined block provided on the ejector plate 10 are moved. 12.

Next, the operation of this embodiment will be explained. FIG. 16 shows a state in which the mold is opened after molding. Also, Figure 1
After opening the mold, 7 is moved out of the molding machine while being guided by the guide rail 13 by pulling the handle 17 provided on the lower mold body 8-1 integrated with the ejector plate 10-1, and is moved to the inclined block. The ejector plate 10-1 begins to climb the slope of the ejector plate 10-1, and on the other hand, the lower mold main body 8-2, which is integrated with the ejector plate 10-1 connected to the lower mold main body 8-1, is moving. show.

FIG. 18 shows that in the lower mold body 8-1, the ejector pin 20 provided on the ejector plate 10-1 slides on the slope of the inclined block 12, so that the ejector pin 20 provided on the ejector plate 10-1 moves into the molded product 4. is projected, and on the other hand, the lower mold main body 8-2 is shown moving. FIG. 19 shows a state in which the ejector pin 20 of the lower mold body 8-1 has been lowered, and the lower mold body 8-2 has been temporarily positioned using the recess provided on the side surface and the ball 15. Then, as shown in FIGS. 8A and 8B, the block 6 is moved to set the insert part 5 in order to easily and accurately set the insert part.

In FIG. 20, the lower mold body 8-2 is in a closed state, and molding is performed, while insert parts are set in the lower mold body 8-1. After molding, the lower mold body 8-2 is shown in Figure 19.
, FIG. 18, and FIG. 17, and eject the molded product.

Thereafter, in FIG. 16, the lower mold body 8-2
The ejector pin 20 is lowered, and the lower die main body 8-1 is temporarily positioned using the recess and the ball 15 provided on the side surface. Subsequently, in FIG. 15, the lower mold main body 8-1 is in the mold closed state and performs molding, while the lower mold main body 8-1
Set the insert parts in 2. The above is one molding cycle.

FIGS. 21 and 22 show an injection mold of Example 4, in which an upper mold body 9 and a lower mold body 8 form a molded product shape. Further, a bush 25 having a spiral groove is fixed to the lower die main body 8,
A rod 24 engaging therewith is provided on the upper mold plate 23. The molded product is ejected by opening the mold, rotating the lower mold body 8 connected to the ejector plate 10, and using the inclined portion 11 and inclined block 12 provided on the ejector plate 10.

Next, the operation of this embodiment will be explained. FIG. 23 shows that when the mold is being opened after molding, the rod 24 provided on the upper mold plate 23 moves upward, causing the bush 25 provided on the rod 24 to engage in a spiral manner.
The figure shows a state in which the ejector plate 10 integrated with the lower die main body 8 rotates, so that the slope of the ejector plate 10 begins to climb the slope of the inclined block 12.

FIG. 24 shows that when the mold opening progresses further, the ejector plate 10 rotates in the same manner as described above, and the slope of the ejector plate 10 slides on the slope of the inclined block 12, so that the ejector plate 10 is opened. The ejector pin 20 shown in FIG. In FIG. 25, the mold opening progresses further, and the ejector plate 10 rotates in the same manner as described above, and the ejector pin 2
After lowering 0, set the insert parts. At this time, in order to easily and accurately set the insert parts,
As shown in FIGS. 8(a) and 8(b), the block 6 is moved and the insert part 5 is set.

Next, by clamping the mold, the lower mold body is rotated to its original position from FIG. 25, FIG. 24, FIG. 23, and FIG. 22, and then molding is performed. The above is one molding cycle. As described above, since the lower die rotates, if the amount of movement of the lower die is limited, the space can be reduced more than when it slides linearly.

FIGS. 26 and 27 show an injection molding mold according to Example 5, and this mold has an upper mold body 9 and mold parts 8-1 and 8-2 that form the shape of the molded product. It consists of a lower mold main body 8 having two parts. Further, the lower mold body 8 is provided with a rotatable bush 25 having a spiral groove, and the upper mold plate 23 is provided with a rod 24 that engages with the bush 25 . The molded product is ejected by rotating the lower mold body 8 connected to the ejector plate 10 by opening the mold, and using the inclined portion 11 and inclined block 12 provided on the ejector plate 10.

Next, the operation of this embodiment will be explained. In FIG. 28(a), when a bush 25 having a notched groove rotates in the direction of the arrow, the rotation is transmitted to the lower mold body 8 by a plate 26 attached to the lower mold body 8. Figure 28(b)
) when rotating in the direction of the arrow, the plate 26 attached to the lower mold body 8 bends, so that the rotation is not transmitted to the lower mold body 8 and does not rotate.

FIG. 29 shows that when the mold is in the middle of opening after molding, the rod 24 provided on the upper mold plate 23 moves upward, and the spirally engaged bush 25 provided on the rod 24 is inserted into the mold. , the ejector plate 10 integrated with the lower die main body 8 rotates, and the ejector plate 10 begins to climb up the slope of the inclined block 12. Furthermore, another mold section located on the opposite side is also rotating in the same manner.

FIG. 30 shows that when the mold opening progresses further, the ejector plate 10 rotates in the same manner as described above, and the slope of the ejector plate 10 slides on the slope of the inclined block 12, so that the ejector pin 20 is attached to the molded product. It shows the state where 4 is protruding. Furthermore, another mold section located on the opposite side is also rotating in the same manner. In FIG. 31, the mold opening progresses further, and the ejector plate 10 rotates in the same manner as described above, lowering the ejector pin 20 of the mold part 8-1. On the one hand, the mold section 8-2 is set in the molding position. In order to easily and accurately set the insert parts, the block 6 is moved and the insert parts 5 are set, as shown in FIGS. 8(a) and 8(b).

In FIG. 32, the bush 25 rotates idly, the mold part 8-2 is closed while being set at the molding position, and molding is performed. On the other hand, insert parts are set in the mold section 8-1. After molding, the mold part 8-2 rotates in FIGS. 27, 29, 30, 31, and 32 similarly to the mold part 8-1. The above is one molding cycle.

In each of the above embodiments, the movement of the lower mold body 8 can be performed automatically by providing a cylinder or the like, or by providing a cylinder or the like instead of the inclined block 12 so that the lower mold body 8 can move freely in and out. The molded product can also be ejected by adjusting the amount of movement of the lower die 8 and the timing of in/out of the ejector pin 20 by moving it up and down.

[0037]

[Effects of the Invention] As explained above, the present invention is capable of taking out the molded product by sliding the lower mold body out of the mold for each shot of molding in which insert parts are simultaneously molded using a mold consisting of an upper mold and a lower mold. and a molding device for mounting insert parts, wherein the lower mold body is provided with an ejector plate and an ejector pin integrated therewith, and a pushing means is provided in a region where the ejector plate moves as the lower mold body slides; By sliding the lower mold main body, the ejector pin and ejector plate are pushed up by the pushing up means to eject the molded product, and a rod having a spiral groove is provided on the upper mold template. By providing the lower mold body with a rack that moves via a gear that engages with the groove and rotates, the lower mold body slides when opening and closing the mold, thereby preventing the process of ejecting the molded product. This can shorten the molding cycle. Further, by moving the lower mold body outside the mold and setting the insert parts, work efficiency is improved, and it is possible to improve work efficiency and reduce setting errors.

[0038] Furthermore, two lower mold bodies are connected and a pushing up means is provided on a part of the moving surface of each ejector plate, so that when one lower mold body is in the mold, the other lower mold body By alternately performing molding so that the parts are placed outside the mold, the next insert part can be accurately set in the mold during molding, and the number of molding cycles can be reduced.

Furthermore, in a molding apparatus in which the lower mold body is slid out of the mold to take out the molded product and mount the insert parts for each molding shot in which insert parts are simultaneously molded, an ejector plate and an ejector plate are attached to the lower mold body. an ejector pin integrated therein, a rod having a spiral groove in the template of the upper mold, and a bush that engages with the groove to convert vertical movement of the rod into rotation of the lower mold body; By providing a push-up means in a region where the ejector plate moves as the lower mold main body rotates, the lower mold main body is rotated during mold opening and mold closing, and the ejector pin and ejector plate are moved by the push-up means. By pushing up and ejecting the molded product, the lower mold rotates, so if the amount of movement of the lower mold is limited, the space can be reduced compared to when it slides linearly.

Furthermore, by providing means for converting only the rotational movement of the bush in one direction into the rotational movement of the lower mold body, the next insert part can be accurately set in the mold during molding. Therefore, it is possible to reduce the molding cycle, and since it is a rotary type, it is also possible to save space.

[Brief explanation of drawings]

FIG. 1(a) is a plan view of an insert molded product, and FIG. 1(b) is a cross-sectional view taken along line AA.

FIG. 2 is a plan view of an injection mold in Example 1.

FIG. 3 is a sectional view of an injection mold.

FIG. 4 is a sectional view when the mold is opened.

FIG. 5 is a cross-sectional view of the lower mold body during movement.

FIG. 6 is a sectional view when the molded product is ejected.

FIG. 7 is a cross-sectional view of the lower die main body when the movement is completed.

FIG. 8(a) is an enlarged plan view of the mold part, and FIG. 8(b) is a BB sectional view thereof.

9 is a plan view of an injection mold in Example 2. FIG.

FIG. 10 is a sectional view of an injection mold.

FIG. 11 is a sectional view of the lower die main body during movement.

FIG. 12 is a sectional view when the molded product is ejected.

FIG. 13 is a cross-sectional view of the lower mold body upon completion of movement.

14 is a plan view of an injection mold in Example 3. FIG.

FIG. 15 is a sectional view of an injection mold.

FIG. 16 is a cross-sectional view of the mold when the mold is opened.

FIG. 17 is a cross-sectional view of the lower die main body during movement.

FIG. 18 is a cross-sectional view when the molded product is ejected.

FIG. 19 is a cross-sectional view of the lower die main body upon completion of movement.

FIG. 20 is a sectional view of the mold when the mold is closed.

21 is a plan view of an injection mold in Example 4. FIG.

FIG. 22 is a sectional view taken along line CC in FIG. 21;

FIG. 23 is a cross-sectional view of the lower die main body during movement.

FIG. 24 is a sectional view when the molded product is ejected.

FIG. 25 is a cross-sectional view of the lower die main body upon completion of movement.

26 is a plan view of an injection mold in Example 5. FIG.

27 is a sectional view taken along line DD in FIG. 26. FIG.

FIGS. 28(a) and 28(b) are views showing an enlarged view of the bush portion.

FIG. 29 is a cross-sectional view of the lower die main body during movement.

FIG. 30 is a cross-sectional view when the molded product is ejected.

FIG. 31 is a cross-sectional view of the lower die main body upon completion of movement.

FIG. 32 is a sectional view of the mold when the mold is closed.

[Code explanation]

5 (1, 2, 3) insert parts 7 Lower template 8 Lower mold body 9 Upper mold body 10 Ejector plate 11 Slope part 12　Slanted block 14 Spacer block 15, 16 ball 18 Guide pin 19 Guide pin hole 20 Ejector pin 21 Rack 22 Gear 23 Upper template 24 Rod 25 Bush 26 board

Claims (5)

[Claims] Claim 1: Molding in which the insert part is simultaneously molded using a mold consisting of an upper mold and a lower mold, and the lower mold body is slid out of the mold to take out the molded part and install the insert part. In the apparatus, the lower mold body is provided with an ejector plate and an ejector pin integrated therewith, and a pushing means is provided in a region where the ejector plate moves as the lower mold body slides, and the lower mold body is slid. The molding apparatus is characterized in that the ejector pin and the ejector plate are pushed up by the pushing up means to eject the molded product. 2. The molding apparatus according to claim 1, wherein the template of the upper mold is provided with a rod having a spiral groove, and the lower mold body is provided with a rack that moves via a gear that engages with the groove and rotates. A molding apparatus characterized in that the lower mold main body is slid when the mold is opened and closed. 3. The molding apparatus according to claim 1, wherein two lower mold bodies are connected to each other, a pushing means is provided on a part of the moving surface of each ejector plate, and one of the lower mold bodies is connected to the mold body. A molding device characterized in that when the lower mold body is inside the mold, the other mold body is outside the mold, and molding is performed alternately. 4. A molding device in which the lower mold body is slid out of the mold to take out the molded product and mount the insert parts for each molding shot in which insert parts are simultaneously molded, the lower mold body having an ejector plate and an insert part attached thereto. an ejector pin integrated therewith, a rod having a spiral groove in the template of the upper mold, and a bush that engages with the groove to convert the vertical movement of the rod into rotational movement of the lower mold body; By providing a push-up means in a region where the ejector plate moves as the lower mold body rotates, the lower mold main body is rotated during mold opening and mold closing, and the ejector pin and ejector plate are moved by the push-up means. A molding device characterized in that a molded product is ejected by pushing up. 5. The molding apparatus according to claim 4, further comprising means for converting only the rotational movement of the bush in one direction into the rotational movement of the lower mold body.