JPH11333852A - Finishing device for testing die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the problems of greatly increased manufacturing costs and the necessity of a large area and broad space for installation because a type of the top and bottom clamping of the dies in the conventional finishing device for testing dies causes the necessity of a long, thick frame in the longitudinal direction such as a large-sized press machine as well as the use of a large-scale die plate reverse system, a large-sized hydraulic cylinder or the like. SOLUTION: A non-slidable die plate fitting base 43 fitted with one die plate d1 is supported by a fixed base 23 while a slidable die plate fitting base 45 fitted with the other die plate d2 is supported by a horizontally movable slide base 35, each of which can be freely switched between the working postures in vertically closing the die and that in turning the die face up. The die clamping can be achieved by pulling the two die plate fitting bases close to one another from the state where each of the die plates is adjacent to one another by a die clamping cylinder 91. This results in a small-sized device and lower costs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold test finishing apparatus, and more particularly to a mold test finishing apparatus for performing a mold clamping test on a mold and various kinds of finishing and adjustment.

[0002]

2. Description of the Related Art For example, a mold for injection molding is usually composed of a pair of male and female molds, and its processing accuracy is not limited to cavities, but also to a parting line, a guide part, and other parts. High precision is required. This accuracy is of course pursued as much as possible in the main processing in the mold manufacturing process, but the final finishing adjustment is always done by actually closing the mold or performing a molding test. There are many things you can't do without. As a device for performing finishing and adjustment while performing such a test, there is a die test finishing device.

FIG. 6 shows an example 1 of a conventional mold test finishing apparatus.
It shows. In the figure, reference numeral 3 denotes a horizontal base, and a gate-shaped machine frame 5 stands up from the rear of the base 3. On the upper surface of the base 3, a lower template mounting base 7 is provided.
Are provided so as to be movable in the left-right direction, and the movement is performed between a mold matching position located immediately below the machine casing 5 as shown by a solid line in the drawing and a working position shown by a two-dot chain line. A plurality of large hydraulic cylinders 9 are mounted downward on the top wall of the machine frame 5.

A template reversing mechanism 11 which is raised and lowered by a piston rod 9a of a hydraulic cylinder 9 is movably supported inside the machine frame 5. An upper template mounting base 13 is attached to the template reversing mechanism 11, and the upper template mounting base 13 is substantially reversed by the template reversing mechanism 11. That is, the upper mold plate mounting base 13 is located between the mold matching position where the posture is horizontal as indicated by the solid line and the working position where the posture is substantially inverted and inclined as indicated by the two-dot chain line. The posture is changed.

A mold D is provided on the upper surface of the lower mold plate mounting base 7.
One of the pair of template plates d1, d2 is attached upward, and the other template plate d2 is attached to the upper template attaching base 13 downward on the lower surface when it is at the mold matching position. The mold clamping test is performed by lowering the upper template mounting base 13 from a state in which the lower template mounting base 7 is moved to the mold matching position (a state shown by a solid line). When a molding test is performed, a test material is injected into the cavity 15 of the mold D by an injection mechanism (not shown) in a mold-clamped state.

After the upper template mounting base 13 is pulled up, the lower template mounting base 7 is pulled out to the working position, and the upper template mounting base 13 is inverted to the working position. In this state, finishing processing or the like is performed on the template plates d1 and d2.

[0007]

There are a number of steps in the mold finishing process from the mold clamping test to the final fine adjustment. Among them, the mold clamping test involves the attrition of a pair of mold plates. Due to the need to see, it is generally said that a fairly strong pressure of more than 10 tons and possibly up to 1000 tons is required. For this reason, this type of mold test finishing device 1 requires a heavy and long frame (base 3 or machine frame 5) like a large press machine, and particularly requires a strong mold clamping pressure. In relation to this, it has become common technical knowledge that this conventional apparatus is held vertically long as shown in FIG. 6 and the template plates d1 and d2 are fastened in the vertical direction.

[0008] In order to hold the upper part of the template mounting base 13 upside down as described above, a large-sized template reversing mechanism 11 for reversing the upper and lower sides of the template mounting base 13, and moving the template reversing mechanism 11 up and down, and A large driving force is required for reversing, and accordingly, a larger driving means such as the hydraulic cylinder 9 is required.

[0009] These problems inevitably increase the production cost, and there is a problem that a large area and a high space are required for installing the apparatus. This type of device is not only an indispensable device for a so-called mold maker, but also performs machining and adjustment after testing by using a mold d.
In order to be able to perform the operations on the spot without removing each of the d1 and d2, one unit is not enough, and two or three units are important devices to be installed.

In the case where the mold D is one in which the opening and closing of the mold in actual product production is performed in a horizontal direction,
Because the attitude during the test is different from the attitude during actual use,
It is inevitable that the adjustments made based on the results of the mold clamping test will be out of order. In particular, for molds with slide cores, the direction of gravity during testing and the direction of gravity during actual use will be completely different, resulting in significant dimensional errors in each part and movement of the core. It often gives rise to catastrophic poor quality, which can be very bad.

Further, in the conventional mold test and finishing apparatus 1, at least a half of the height of the space in which the template mounting base 13 can be turned is required for the up-and-down stroke of the upper template mounting base 13. Is necessary, and it is virtually impossible to reduce this distance. Therefore, it takes a long time from the start of the operation of one cycle to the completion of the operation, and there is a problem that the work efficiency is not improved.

[0012]

Means for Solving the Problems In recent years, so-called NC processing by computer control has become the mainstream in die processing, so that very high precision has been obtained by only this processing. Therefore, today, in performing a mold clamping test, a mold clamping pressure as strong as conventionally thought is not always necessary.

The present invention has been made in view of this point, and is a mold test which can be configured to be small and low-cost, and which has sufficient functions required for finishing and adjusting the mold. It is an object to provide a finishing device.

In order to achieve this object, in the mold test finishing apparatus according to the present invention, one of a pair of mold plates is detachably mounted, and the posture can be switched between a vertical mold posture and a posture for supine operation. The non-slide side template mounting base rotatably provided as described above, the slide base horizontally movable so as to move forward and backward with respect to the non-slide side template mounting base, and the other template are provided. A slide-side template mounting base rotatably supported by the slide base so as to be removably mounted so as to be switched between a vertical mold alignment attitude and a posture when working on the back; The pair of template plates are clamped by relatively moving forward in the matching position.

Therefore, according to the present invention, the apparatus can be set up in a horizontal type, the size in the height direction can be considerably reduced, and the drive means for moving the slide-side template mounting base is so large. Is not necessary.
That is, since the weight of the template mounting base, various mechanisms mounted on the template mounting base, and the molds are all supported from below, there is no need to lift them as in the conventional one. In addition, since the amount of rotation when changing the two template mounting bases between the mold-matching position and the working position is approximately 90 ° at the center angle, a large force is required for the driving force for changing the position. There is no.

The movement of the slide-side template mounting base is performed by moving the slide-side template mounting bases on the slide side and the non-slide side relative to each other from a vertically raised state. Since the movement to the working posture to perform the work is performed by tilting the both mold plate mounting bases to the opposite sides, the gap between the two mold plate mounting bases when the working posture is set may interfere with work. It can be reduced as much as possible. This has a great significance in that not only the size of the device can be reduced, but also the operation speed can be increased.

In addition, since the mold clamping test of the mold is performed in the horizontal direction, the mold that is opened and closed in the horizontal direction in a state used for actual product manufacturing is subjected to the direction of gravity during the test. And the direction of gravity in actual use will match. That is, since the mold clamping test and the like are performed under the same conditions as those in actual use, the reliability of finishing and adjustment performed based on this test becomes extremely high. Thus, according to the present invention,
A compact and low-cost configuration can be achieved without losing functions necessary for performing a mold clamping test, finishing, and adjustment of a mold.

According to a second aspect of the present invention, in the die test finishing apparatus according to the first aspect, a slide base moving means for moving the slide side template mounting base to a position where the pair of templates approach each other; A mold clamping actuator for clamping a pair of template plates by pulling two template mounting bases together from a state in which the template plates are close to each other is provided.

In this case, the driving means for moving the template mounting base can be smaller. That is,
Since the slide base moving means does not require a mold clamping force, this means can be achieved by a structure having a small driving force, for example, a screw type moving mechanism or a rack and pinion mechanism using an electric motor as a driving source. Further, the mold clamping is performed from a state in which the pair of mold plates are close to each other, so that a small operation stroke is sufficient for the mold clamping actuator.

According to a third aspect of the present invention, in the die test finishing apparatus according to the second aspect, the mold clamping actuator is mounted on one of the two template mounting bases, and the operating member of the mold clamping actuator is mounted on the other. Is provided with a connecting means for removably connecting to the template mounting base.
Therefore, since there is no need for a withstand means for supporting the driving force of the mold clamping actuator, the structure of the frame can be simplified and the size can be further reduced. The type of the clamping actuator is not limited as long as it can generate a corresponding pressure, but it is preferable to use a hydraulic cylinder.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a mold test finishing apparatus according to an embodiment of the present invention. 2
Reference numeral 3 denotes a fixed base of the mold test finishing device 21. The fixed base 23 is provided with a pit 25 provided at the installation location.
Are arranged horizontally so as to cover the upper surface of the. Fixed base 23
(The direction toward the left in FIG. 1 is the front side, and the near side is the right side as viewed in FIG. 1. In the following description, the direction is referred to as this direction.) Relatively large windows 27, 27 'are formed, and long holes 2 long in the front-rear direction are provided on both left and right sides of the front window 27.
9 are formed.

On the upper surface of the fixed base 23, a rear window 27 is provided.
′, Two rails 31 extending in parallel in the front-rear direction are provided on both left and right sides, and another rail extending in the front-rear direction at a position substantially corresponding to the rail 31 on the bottom surface of the pit 25. 33 is fixed.

Reference numeral 35 denotes a slide base slidably supported by the rails 31, 33. The slide base 35 includes an upper base 37 on the upper rail 31, a lower base 39 on the lower rail 33, and a vertical connecting wall 41. The upper base 37 has a rectangular flat frame shape. doing. The connecting wall 41 connects the upper base 37 and the lower base 39 through a position near the front of the window 27 ′ on the rear side of the fixed base 23. Therefore, the slide base 35 moves in the front-back direction.

Reference numerals 43 and 45 denote template mounting bases. These template mounting bases 43 and 45 have a pair of molds d of the mold D.
1 and d2 are separately mounted. The front side 43 of the two template mounting bases 43 and 45 is a non-sliding side rotatably supported by the fixed base 23, and the rear template mounting base 45 rotates on the slide base 35. The slide is movably supported.

The front template mounting base 43 has a substantially L-shape including a rectangular thick flat plate-shaped main portion 47 and positioning feet 49 protruding from one end of the main portion 47. A shaft 51 extending in the left-right direction is inserted through the bent portion,
Both ends of the shaft 51 are supported by bearings 53 fixed on the upper surface of the fixed base 23. The surface on the traverse line where the main portion 47 and the positioning feet 49 are continuous is an arc surface centered on the shaft 51, and the shaft 51 is positioned above the fixed base 23 by the radius of the arc surface. It is provided in.

Accordingly, the template mounting base 43 is not
As shown in the figure, a positioning posture in which the entirety of the positioning feet 49 is seated on the upper surface of the fixed base 23 and the main part 47 is vertical,
As shown in FIG. 2, the entire main portion 47 is provided so as to be able to change its posture to a working posture in which it is seated on the upper surface of the fixed base 23 and turned up. The front template mounting base 43 on the front side is positioned so as to rise from a position slightly behind the front window 27 of the fixed base 23 in the state where the molds are aligned.

A template mounting plate 71 is fixed to the rear surface of the front template mounting base 43 via a spacer block 69, and a template d1 is detachably mounted on the template mounting plate 71. Reference numeral 73 denotes an ejector mechanism provided on the front template mounting base 43.

The rear template mounting base 45 is a rectangular flat plate having substantially the same size as the main portion 47 of the front template mounting base 43, and one end surface thereof is formed in an arc surface.
A shaft 55 extending in the left-right direction is inserted through the center of the arc surface. Both ends of the shaft 55 are supported by bearings 57 fixed to the front end of the upper base 37 of the slide base 35. The template mounting base 45 also has a posture between a vertically aligned mold alignment posture as shown in FIG. 1 and a working posture which is turned upright so as to overlap the upper surface of the upper base 37 as shown in FIG. Is provided so as to be changed. The rear template mounting base 45 is located slightly forward of the window 37a of the upper base 37 in a state in which the mold is aligned.

A template mounting plate 75 is fixed to the front surface of the rear template mounting base 45, and a template d2 is detachably mounted on the template mounting plate 75. Accordingly, when the template mounting bases 43 and 45 are in the matching posture in a state where the template d1 and d2 are mounted on the front and rear template mounting bases 43 and 45, respectively, the templates d1 and d2 are mutually positive in the front-rear direction. (See FIG. 1).

A test molding material injection mechanism 76 is mounted on the rear mold plate mounting base 45. When a molding test of a target molded product is performed using the mold plates d1 and d2, the test molding material injection mechanism 76 is used. The injection of the test molding material into the cavity of the clamped mold D is performed by 76. The release of the molded product is performed by the ejector mechanism 73.
Performed by

Two left and right brackets 59 are attached to the upper end of the front surface of the front template mounting base 43, and two left and right brackets 59 are also attached to the upper end of the rear surface of the rear template mounting base 45. I have.

Reference numeral 61 denotes a front-position switching hydraulic cylinder. The casing of the attitude switching hydraulic cylinder 61 is provided at the front end of the pit 25 so as to be tiltable substantially in the front-rear direction, and its piston rod 63 is attached to the window 2 of the fixed base 23.
7, the tip end of which is rotatably connected to the bracket 59 attached to the front template mounting base 43. The front-side template mounting base 43 is set to a working posture when the piston rod 63 is drawn into the casing, and is set to a matching posture when the piston rod 63 protrudes from the casing.

Numeral 65 denotes a rear attitude switching hydraulic cylinder. The casing of the posture switching hydraulic cylinder 65 is provided at the rear end of the lower base 39 of the slide base 35 so as to be tiltable substantially in the front-rear direction, and its piston rod 67 is connected to the window 27 ′ of the fixed base 23 and the upper base 37. The front end extends upward through the window 37a, and its tip is rotatably connected to the bracket 59 mounted on the rear template mounting base 45. Rear template mounting base 45
When the piston rod 67 is pulled into the casing, it is set to the working posture, and when the piston rod 67 protrudes from the casing, the fitting posture is set.

Reference numeral 77 denotes a slide base moving mechanism for moving the slide base 35. The slide base moving mechanism 77 is disposed at a substantially intermediate portion of the pit 25, and includes a mounting table 79 fixed to the bottom surface of the pit 25, an electric motor 81 and a bearing 83 fixed to the upper surface of the mounting table 79, and It comprises a screw shaft 85 rotatably supported by the bearing 83 in the extending direction and connected to the output shaft of the electric motor 81, and a nut 87 supported by the slide base 35.

The nut 87 is slidably and non-rotatably inserted into a nut through hole 41a formed in the connecting wall 41 of the slide base 35, and flanges 89 are fixed to both front and rear ends thereof. Screw shaft 85
Is screwed into the nut 87. Therefore,
When the electric motor 81 rotates, the nut 87 is sent in the front-rear direction. When the nut 87 is sent forward, the flange 89 on the rear side pushes the connecting wall 41 to move the slide base 35 forward, and the nut 87 moves backward. When fed, the front flange 89 presses the connecting wall 41 to move the slide base 35 backward.

The front and rear flanges 8 provided on the nut 87
The interval of 9 is approximately twice the thickness of the connecting wall 41. Therefore, the nut 87 has a play s of about half of its thickness with respect to the connecting wall 41, so that the rear flange 89
Is in contact with the connecting wall 41, the slide base 35 can move forward by the play s.

The operation of bringing the template plates d1 and d2 close to each other is performed by moving the slide base 35 forward by the slide base moving mechanism 77, and final mold clamping is performed by the mold clamping hydraulic cylinder 91. There are four mold-clamping hydraulic cylinders 91, and the casings are attached to cylinder mounting ears 93 projecting from the left and right side surfaces of the front template mounting base 43 in a direction extending in the front-rear direction. The four hydraulic cylinders 91 form a mold clamping actuator. When the front template mounting base 43 is in the working posture, the casing of the mold clamping hydraulic cylinder 91 is passed through the long hole 29 formed in the fixed base 23.

At the tip of a piston rod 95 (in FIG. 3, the piston rod 95 is shown projecting from the cylinder case) as an operating member of the mold-clamping hydraulic cylinder 91, a rear mold plate is provided. Mounting base 45
There is provided a connecting portion 97 for performing connection with. The coupling portion 97 includes an insertion portion 97a having a diameter larger than that of the piston rod 95, a flange 97b provided at a front end of the insertion portion 97a, a mounting hole 97c formed at a rear end of the insertion portion 97a, and And an engagement pin 99 detachably mounted in the hole 97c.

Pressing ears 101 are provided on both left and right side surfaces of the rear template mounting base 45 so as to face the cylinder mounting ears 93 of the front template mounting base 43. This pressed ear 101 has a mold-clamping hydraulic cylinder 9
The through hole 101a is formed coaxially with the through hole 1. The insertion portion 97a of the coupling portion 97 is inserted into the through hole 101a.
Is inserted, and the engaging pin 99 is mounted in the mounting hole 97c in a state where the mounting hole 97c has come out of the through hole 101a. The mold test finishing device 21 is configured as described above.

Next, the operation and use of the mold test finishing device 21 will be described. Attachment and removal of the template plates d1 and d2 to and from the template mounting bases 43 and 45 are performed by using the template mounting base 4.
This is performed in a state where the positions 3 and 45 are in the working posture.

The mold clamping test of the mold D is performed through two steps, approach and mold clamping. First, the template mounting base 4
When the approach command is issued from this state, the slide base moving mechanism 77 is driven to move the rear template mounting base 45 to the front template mounting base 4.
3 and the templates d1, d2 are brought closer to each other as shown in FIG. When a proximity switch (not shown) detects that the distance between the template plates d1 and d2 has reached a predetermined stop position slightly smaller than the play s,
The movement of the slide base 35 is stopped.

When the movement of the slide base 35 stops,
The mold clamping hydraulic cylinder 91 is driven in the protruding direction, and the piston rod 95 is protruded, so that the insertion portion 97a of the connecting portion 97 is inserted into the through hole 101a of the rear template mounting base 45.
This insertion is performed until the flange 97b of the connecting portion 97 comes into close proximity or light contact with the rear template mounting base 45, whereby the mounting hole 97c of the connecting portion 97 comes out from the through hole 101a.

At this point, the operator operates the mounting hole 9 of the connecting portion 97.
The engaging pin 99 is attached to 7c. When a mold clamping command is issued from this state, the mold clamping hydraulic cylinder 91 is driven in the retracting direction, and the piston rod 95 is moved forward.
Then, the pin 99 presses the pressed ear 101 of the rear template mounting base 45 forward, and as shown in FIG.
2 and clamp the mold.

When a molding test is performed, the test molding material injection mechanism 76 is driven while the mold is clamped.

When a mold opening command is issued while the mold is being clamped, the mold clamping hydraulic cylinder is driven in the projecting direction to move the piston rod 95 backward. Then
Now, the flange 97b of the connecting portion 97 presses the pressed ear 101 of the rear template mounting base 45 rearward to retreat the rear template mounting base 45, and thereby the templates d1 and d2.
And immediately thereafter, the retraction of the rear template mounting base 45 stops. Here, the operator removes the engagement pin 99 from the coupling portion 97. Then, when the unapproach command is issued, the slide base moving mechanism 77 is driven to return the rear template mounting base 45 to the initial standby position. The mold clamping test is performed in this way.

The finishing and fine adjustment based on the results of the mold clamping test are performed with the template mounting bases 43 and 45 in the working posture. When a molding test is performed, the molded product is released by the ejector mechanism 73 at a predetermined timing after the mold is opened.

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and there are changes in the design without departing from the gist of the present invention. Are also included in the present invention. For example, in the embodiment, the approach at the time of mold clamping is performed from a state where the template mounting base is in the mold matching posture, but the operation and the approach to the mold matching posture are performed simultaneously. Similarly, the operation of returning to the working posture and the unapproach may be performed simultaneously. By doing so, the operation speed can be increased.

[0048]

As described above, in the mold test finishing apparatus of the present invention, the dimension in the height direction can be considerably small, and the weight of the template mounting base can be supported from below. Therefore, there is no need to lift it as in the conventional apparatus, and a very large driving means for moving the slide-side template mounting base is not required. In addition, since the amount of rotation when changing the two template mounting bases between the mold-matching position and the working position is approximately 90 ° at the center angle, a large force is required for the driving force for changing the position. There is no.

The spacing between the two mold plate mounting bases in the working posture can be reduced as much as possible without interfering with the work. This only leads to a reduction in the size of the apparatus. It has a significant meaning that it can also increase the operation speed. In addition, since the mold clamping test is performed in the horizontal direction, the mold that opens and closes in the horizontal direction in the state used for actual product manufacturing is used under the same conditions as during actual use. Since a mold clamping test or the like is performed, the reliability of finishing and adjustment performed based on the test becomes extremely high. Thus, according to the present invention, a small-sized and low-cost configuration can be achieved without losing functions required for performing a mold clamping test, finishing, and adjustment of a mold.

According to the second aspect of the present invention, since the slide base moving means does not require a mold clamping force, this means can be configured with a small driving force. Since the operation is performed from the close state, a small operation stroke is sufficient for the mold clamping actuator, so that the driving means for moving the template mounting base can be smaller.

According to the third and fourth aspects of the present invention, since there is no need for a withstand means for supporting the driving force of the mold clamping actuator, the structure of the frame can be simplified by that much. The size can be reduced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing a mold test finishing apparatus according to an embodiment of the present invention in a mold matching standby state.

FIG. 2 is a vertical sectional view showing the mold test finishing device shown in FIG. 1 in a working state.

FIG. 3 is an enlarged perspective view of a main part of the mold test finishing device shown in FIG.

FIG. 4 is an enlarged side view of a main part of the die test finishing apparatus shown in FIG.

FIG. 5 is an enlarged side view of a main part of the die test finishing apparatus shown in FIG.

FIG. 6 is a schematic side view showing an example of a conventional mold test finishing device.

[Explanation of symbols]

 Reference Signs List 21 die test finishing device 35 slide base 43 non-slide side die plate mounting base 45 slide side die plate mounting base 77 slide base moving means 91 mold clamping actuator (hydraulic cylinder) 95 piston rod 97 coupling means D die d1 die plate d2 template

Claims (4)

[Claims] 1. A non-slide side template mounting base rotatably provided so that one of a pair of template is removably mounted and can be switched between a vertical patterning position and a posture for supine operation. The slide base is provided so as to be horizontally movable so as to move forward and backward with respect to the non-slide side template mounting base, and the other template is removably attached to the vertical mold alignment posture and the posture for supine operation. A slide-side template mounting base rotatably supported by the slide base so as to be switched, and the two template mounting bases are relatively advanced in a mold-matching posture to form the pair of template. A mold test finishing device characterized in that the mold is clamped. 2. The mold test finishing device according to claim 1, wherein the slide base moving means for moving the slide-side template mounting base to a position where the pair of templates are close to each other, and the pair of templates are close to each other. A mold test finishing device, comprising: a mold clamping actuator for clamping a pair of template plates by pulling two template mounting bases together from the set state. 3. The mold test finishing device according to claim 2, wherein the mold clamping actuator is mounted on one of the two template mounting bases, and an operating member of the mold clamping actuator is mounted on the other template mounting base. A mold test finishing device, characterized in that a coupling means for coupling and releasably coupling to the mold is provided. 4. A mold test finishing apparatus according to claim 3, wherein the mold clamping actuator is a hydraulic cylinder, and the cylinder case is fixed to one of the two template mounting bases. Mold test finishing equipment.