JPH08323766A - Contacting device for combination type mold - Google Patents

Abstract

PURPOSE: To provide the tight lock device of a combined mold capable of finely adjusting the first mold of a part of the mold in a movable plate and the second mold of the other part of the mold in a fixed plate, and capable of performing tight coupling and providing strong coupling force. CONSTITUTION: A tight lock device is provided on the place supported by the guide rod of a movable plate 50 and constituted of a rotary drive device, the rotary member 20 attached to the place supported by the guide rod of the movable plate 50 in a manner rotatable by the driving of the rotary drive device, the up and down movable drive device provided on the rotary member 20, and a grasping device consisting of upper and lower members 33, 32. The upper and lower members are provided with half screw threads engaged with, the rotary member 20 so as to be made engageable/disengageable by the up and down movable drive device and grasping the guide rod by the engagement of the upper and lower members 33, 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contacting device for a combined molding die, and in particular, by fine adjustment, a fixing plate to which a part of the molding die is attached and another portion of the molding die is attached. The present invention relates to a combination type molding die contacting device for closely contacting a movable plate.

[0002]

2. Description of the Related Art In a conventional injection molding machine, a first mold forming a part of a molding die is fixed to a fixed plate, and a second mold forming another part of the molding die has Some are fixed to a movable plate which is supported by a guide rod of a book so as to be able to move toward and away from the fixed plate. In such an injection molding machine, when an injection material is to be injected, the movable plate is brought close to the fixed plate and pressure is applied to bring the first mold and the second mold into close contact with each other. To do. However, since the ejection force during injection is high, if the tightness of the close contact between the first mold and the second mold is insufficient, the injection material may slightly separate the coupling between the first mold and the second mold by the ejection force. Since the injection material may bleed or the injection-molded product may be deformed, it is a big problem in the injection-molding work to somehow make the first mold and the second mold in close contact with each other. .

As a conventional closing device for a combination molding die, there is one that uses a crank. In the case of utilizing the crank, when the movable plate is pushed to a predetermined position with respect to the fixed plate by a cylinder or the like, further pressure is applied by the crank interlocking mechanism, and the second die of the movable plate and the first plate of the fixed plate are pressed. Attach type 1 closely. However, a mechanism using the crank requires a large space, and the weight of the crank itself is a burden on the device, which is not preferable.

Also, in the injection molding process, inexpensive P
In order to use P and PE injection materials, since a contact device for a mold having high adhesion is required, it is usually advantageous for molding.
Uses ABS, PS, and PET injection materials, which are relatively expensive. This causes an increase in cost, and therefore a contact device that can improve the contact force of the mold is required.

The present invention has been made in view of the above circumstances. The present invention does not require a large space,
It is an object of the present invention to provide an associating device of a combination molding die capable of providing high adhesion.

[0006]

In order to solve the above problems, the present invention provides a fixing plate for mounting a first die forming a part of a combination mold and another part of the combination mold. A movable plate supported by a guide rod in an appropriate portion so as to be able to approach / separate from the fixed plate by a guide rod at an appropriate position, and is supported by the guide rod of the movable plate. And a rotating member attached to a portion rotatably supported by a guide rod of the movable plate by a drive of the rotation driving device, and a rotation member provided on the rotation member. It comprises a vertical movement drive device, and an upper member and a lower member each provided with a corresponding half of a screw thread, and by driving the vertical movement drive device, the upper member and the lower member engage / disengage in the rotating member. Can leave There is a union type mold contact device comprising a clamping device for the guide rods sandwiched and screwing the by engagement of the upper member and the lower member.

[0007]

With this structure, when the movable plate is pushed to the predetermined position with respect to the fixed plate by the driving of the cylinder or the like, the vertical movement drive device engages the upper member and the lower member of the holding device with the nut. Forming something like
The four guide rods that support the movable plate are screwed together. Further, when the rotary member is rotated by the rotary drive device, the movable plate approaches the fixed plate by the screwing of the holding device and the guide rod. The second mold and the first mold can be tightly coupled by finely adjusting the rotational operation and gradually applying pressure to the coupling force between the second mold on the movable plate and the first mold on the fixed seat. . Therefore, the present invention provides an assembling device of a combined molding die which can provide a high adhesion without requiring a large space.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the combination type mold contact device of the present invention will be described below with reference to the accompanying drawings. 1 is an exploded perspective view of an example of the contact device according to the present invention, FIG. 2 is a plan view of an example of the contact device according to the present invention, FIG. 3 is a front view of the entire contact device according to the present invention, and FIG. 6 is a front view of the entire contact device according to the present invention in use, and FIG. 5 is a front view of another embodiment of the entire contact device of the present invention.
Is a front view of another embodiment of the entire contact device of the present invention,
FIG. 7 is a side view showing a part of an injection molding device using a combination mold.

As shown in FIG. 7, an injection molding machine using an ordinary combination mold has a fixed plate 60 to which a first mold forming a part of the mold is attached, and guide rods 80 at four corners.
And a movable plate 50 that is supported by the movable plate 50 and moves toward and away from the fixed plate 60 by expansion and contraction of the cylinder 70.

As shown in FIG. 1, the movable plate 50 is formed with a hole 51 through which the guide rod 80 passes, and a concave tank for mounting the bearing A around the hole 51 and a T-shaped section are formed. And a small hole 54 through which the head of the bolt 55 can be formed. In addition, a mounting tank 56 for mounting the rotary drive device 40 is formed near the hole 52.

The rotating member 20 includes a guide portion 22 and a mounting portion 2.
3 and a fixed gear 21 provided at the rear of the substrate, a guide tank 223 having a T-shaped cross section is formed in the guide portion 22, and an upper cover is provided on the upper surface with bolts. The lower cover 222 is screwed to the lower surface with bolts on the lower surface. Also,
A plurality of perforations 211 are formed in the fixed gear 21 provided on the rear side of the substrate, a bolt having a pin hole in the perforations 211 passes from the rear side, and on the front side of the fixed gear 21,
The nut is screwed with a nut having a pin hole, and the pin is connected to the nut through the pin hole of the nut. The rotary seat 20 to which the bolt 55 is coupled slides in the T-shaped annular tank 53 by sliding the head of the bolt 55 through the small hole 54 formed in the T-shaped annular tank 53 of the movable plate 50. The rotating member 20 is rotatably attached to one side of the movable plate 50.

In this embodiment, the rotary drive is a motor 4
11 and a transmission gear 41 attached to the motor 411.
Consists of two. The motor 411 is housed in the mounting tank 56 formed on the movable plate 50, and the transmission gear 41
The second tooth portion meshes with the tooth portion of the fixed gear 21 of the rotary seat 20.

The holding device 30 has the rotating member 20 on one side.
Is formed with a T-shaped flange 331 that can be fitted into the T-shaped guide tank 223 in FIG.
2 is formed on the upper member 33 and the rotating member 20 on one side.
Is formed with a T-shaped flange 321 that can be fitted into the T-shaped guide tank 223 in FIG.
And a lower member 32 on which 2 is formed. Corresponding half threads are formed on the upper member 33 and the lower member 32, respectively, and when the upper member 33 and the lower member 32 are engaged,
It's like a nut. In order to accurately combine the threads of the upper member 33 and the threads of the lower member 32,
In addition to providing the upper member 33 with an insertion pin as shown in FIG.
The lower member 32 may be formed with an insertion tank as shown in FIG.

In the present invention, a vertical drive device is shown in FIG.
As shown in FIG. 3, the motor 31 is fixed to the mounting portion 23 of the substrate of the rotating member 20, the bevel gear 311 is provided on the motor 31, and the bevel gear portion 343 is provided at the two ends, and the main body has two different upper and lower stages. Bolt part 341'342 with diameter
By using the transmission bolt 34 having the above, the left screw threaded hole 332 of the upper member 33 is screwed with the bolt portion 341, and the right screw threaded hole 322 of the lower member 32 is screwed with the bolt portion 342. Further, a pin hole is provided at one end of the transmission bolt 34, and the transmission bolt 34 is exposed from the upper surface of the upper member 33 after penetrating the screw hole of the lower member 32 and the upper member 33. The exposed end portion is screwed with a nut that is provided, and the pin hole at the end portion of the transmission bolt 34 and the pin hole of the nut are pinned with a pin to connect the transmission bolt 34 and the nut.

As shown in FIGS. 2 and 3, when the motor 31 is started, the bevel gear 311 rotates, and the rotation drives the transmission bolt 34 to rotate, and the rotation of the transmission bolt 34 causes the transmission bolt 34 to rotate.
The upper member 33 and the lower member 32 approach each other or move away from each other to clamp and screw the guide rod 80, or release the guide rod 80.

When the guide rod 80 is screwed with a nut or the like that engages the upper member 33 and the lower member 32, the motor 411 of the rotary drive device is started and the transmission gear 412 is rotated to cause the transmission. The transmission of the gear 412 causes the rotating member 20 to rotate to a predetermined position.

When the above embodiment is actually used, first, the movable plate 50 is fixed to the fixed plate 60 by the cylinder 70.
After approaching to a predetermined position, the guide rod 80 is screwed by the holding device 30 of the vertical drive device. Then, the rotating member 20 is rotated by the rotation driving device to gradually move the movable plate 50 closer to the fixed plate 60, and the molds of both parts of the combination mold are accurately and tightly coupled. Since the combining operation of the combination molds is performed gradually from a short distance, there is no collision of molds due to rapid combination of molds or displacement of combination position, so accurate and close combination of molds is performed. be able to.

Further, the rotation driving device for rotating the rotating member 20 may be the one shown in FIG.
The rotary drive device includes a chain drum 21 fixed to each rotary seat 20, a single endless chain and a chain 434.
And a drive motor 431 and a chain drum 432 provided on the drive motor 431. The chain motor 431 is driven to rotate the chain drum 432, the endless chain 434 is interlocked, and the endless chain 434 interlocks to rotate the chain drum 21 fixed to the rotary seat 20 to rotate the rotary member 20. To rotate.

Further, the rotation driving device for rotating the rotating member 20 may be the one shown in FIG.
The rotary drive device includes a fixed gear 21 fixed to each rotary member 20, a transmission gear 42 having teeth inside and outside, a drive motor 423, and a drive gear 424 provided on the drive motor 423. Include. The motor 4
23, the teeth of the drive gear 424 provided on the gear 23 are meshed with the teeth 422 on the inner side of the transmission gear 42, and the transmission gear 4
The outer tooth portions 421 of 2 are meshed with the respective fixed gears 21. In this way, when the motor 423 is started, its drive is transmitted to the fixed gear 21 via the drive gear 424 and the transmission gear 42 to rotate the rotating member 20.

Further, the fitting structure of the upper member 33, the lower member 32, and the guide portion 22 of the rotating member 20 may use a wedge-like structure.

According to the present invention, a nut is formed by a holding device, and a guide rod 80 for supporting the movable plate 50 is screwed by the nut so that the movable plate 50 approaches the fixed seat 60 to a predetermined position. Since the movable plate can be advanced along the guide rod by the nut structure of the holding device and the driving of the rotary drive device, the movable die 50 and the fixed die 50 can be coupled accurately and strongly. Therefore, it is possible to use inexpensive materials such as PE that require high radiation output, reduce the cost of the product, stably hold the mold during injection, and produce the product with the highest precision.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an example of a contact device according to the present invention.

FIG. 2 is a plan view of an example of a contact device according to the present invention.

FIG. 3 is a front view of the entire contact device according to the present invention.

FIG. 4 is a front view of the entire contact device according to the present invention in use.

FIG. 5 is a front view of another embodiment of the entire contact device of the present invention.

FIG. 6 is a front view of another embodiment of the entire contact device of the present invention.

FIG. 7 is a side view showing a part of an injection molding device using a combination mold.

[Explanation of symbols]

 20 rotating member 21 fixed gear, chain drum 211 drilling 22 guide part 222 upper cover, lower cover 223 guide tank 30 clamping device 31 motor 31I bevel gear 32 lower member 321 T-shaped flange 322 right-hand screw hole 33 upper member 331 T-shaped flange 332 Left-handed screw hole 34 Transmission bolt 341, 342 Bolt portion 343 Bevel gear portion 411 Motor 412 Transmission gear 42 Transmission gear 421 Teeth portion 422 Teeth portion 423 Motor 424 Drive gear 431 Motor 432 Chain drum 434 Chain 50 Movable plate 51 Hole 53 Concave tank 53 Annular tank 54 Small hole 55 Bolt 56 Mounting tank 60 Fixing plate 70 Cylinder 80 Guide rod

Claims (8)

[Claims] 1. A fixing plate for mounting a first die forming a part of a combined mold and a second die forming another part of the combined mold are dimensioned and placed at appropriate positions. In a molding device including a movable plate supported by a guide rod so as to be able to approach / separate from the fixed plate, a contact device provided at a portion of the movable plate supported by the guide rod, the rotary drive device including: A rotary member attached to a portion of the movable plate that is rotatably supported by a guide rod of the movable plate; a vertical drive device provided on the rotary member; The upper and lower members can be engaged / disengaged in the rotating member by driving the vertical movement drive device, and the upper and lower members can be engaged / disengaged. By the guide rod An adhering device for a combination molding die, which comprises a pinching device for pinching and screwing. 2. The upper member and the lower member of the holding device form a slidable structure with respect to the rotating member and are slidably engaged with each other.
Adhesion device for combination mold according to [1]. 3. The contact device for a combination molding die according to claim 2, wherein the slidable structure is a T-shaped fitting structure. 4. The close-fitting device for a combination molding die according to claim 2, wherein the slidable structure is a wedge-shaped fitting structure. 5. The rotation drive device includes a motor provided on the movable plate, a transmission gear provided on the motor for transmitting rotation of the motor, and fixed to the rotation member, the transmission gear 2. A fixed gear which meshes with each other, wherein a rotary member is rotated together with the fixed gear via a transmission gear by driving the motor.
Adhesion device for combination mold according to [1]. 6. The rotary drive device, wherein chain drums are fixed to respective rotary members attached to positions supported by respective guide rods of the movable plate, and endless chains engage the respective chain drums. Then
The combination type molding die according to claim 1, wherein the endless chain is driven by a drive motor, and the rotary drum is rotated by interlocking a chain drum provided on each rotary member. Contact device. 7. The rotary drive device includes fixed gears fixed to respective rotary members attached to positions supported by respective guide rods of the movable plate, and transmission gears having tooth portions inside and outside. , The externally toothed portion meshes a fixed gear fixed to each rotary member, and has one drive motor, and the drive motor includes:
A drive gear is provided, a tooth portion of the drive gear meshes with an inner tooth portion of the transmission gear, and rotation by a drive motor is fixed to the rotating member via the drive gear and the transmission gear. The contact device for a combination molding die according to claim 1, wherein the rotating device is rotated by being transmitted to a fixed gear. 8. The vertical movement drive device includes a drive motor provided on a rotary member, a bevel gear attached to the drive moat, and a bevel gear portion for meshing with a tooth portion of the bevel gear, and two different upper and lower diameters. And a transmission bolt having a bolt portion having a left and right screw threads formed in the upper member and the lower member of the holding device, respectively. Screwing, transmitting the drive of the drive motor to the bevel gear part at the end of the transmission bolt via the bevel gear, and the upper and lower two-stage bolt parts of the transmission bolt, and the left screw thread on the upper and lower members of the holding device. 2. The contact mounting device for a combination molding die according to claim 1, wherein the upper member and the lower member are moved toward and away from each other in the rotating member by screwing driving of the hole and the right-hand screw hole. Place.