JPH10156846A - Molding press apparatus for thermoplastic resin sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable high precision, high speed and high output molding to be effected by means of a simple structure and lightweight and small-sized apparatus and to advance/retract/displace a platen precisely in the desired direction by adsorbing the accumulation of working errors, assembly errors, etc., sufficiently. SOLUTION: In a molding press apparatus equipped with a pair of platens supported by a frame 1, respective screw axes 7 of a pair of roller screws 6 are fixed to the frame 1 and connected to a driving motor 3, a respective nut members 10 corresponding to the screw axes 7 are attached to the respective platen 2a, between each platen 2a and the frame 1 are arranged guide mans 14, 18, 21, 22, 23 which guide the advancement/retraction/displacement of the platen 2a, and an adjusting member 24 which adjust the guide direction of the board 2a is attached to each guide means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing apparatus for forming a thermoplastic resin sheet, particularly to a simple structure.
The present invention relates to a molding press device that achieves high molding accuracy and molding efficiency.

[0002]

2. Description of the Related Art A conventional molding press for forming a thermoplastic resin sheet, especially a foamed resin sheet, includes, for example, a vertically movable pair of platens which are independently advanced and retracted by hydraulic pressure, and a toggle mechanism. There are ones that independently move forward and backward, and ones that independently move forward and backward by a ball screw connected to a servomotor.

[0003]

However, the hydraulic molding press has a large variation in hydraulic control accuracy including the hydraulic cushion, so that the time until the start of operation of a valve such as an electromagnetic valve and the time required for the valve to operate. There is a problem that the molding accuracy is lowered due to a large time lag such as the time required for the switching operation, and the molding press device using the toggle mechanism has a complicated mechanism and a large device weight. However, due to the existence of the fitting tolerance of the mechanism, there is a problem that the occurrence of a large molding error is unavoidable.Furthermore, the device using the ball screw is not suitable for the ball screw alone. For example, the high output of about 8 to 30 tons required for molding a thermoplastic foamed resin sheet cannot be generated, and therefore, usually, a ball screw is used. At the end of the molding stroke, high pressure is secured at the end of the molding stroke in combination with the pressure type, but in this case the cycle time becomes longer and the work efficiency is reduced, and problems inherent to the hydraulic type There was an inconvenience that the points would become apparent.

[0004] The present invention has been made as a result of studying to solve such problems of the prior art, and an object of the present invention is to sufficiently improve the molding accuracy of a thermoplastic resin sheet. It also simplifies the construction of the device and reduces its weight,
It is an object of the present invention to provide a screw-type thermoplastic resin sheet forming press device capable of effectively improving work efficiency.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a thermoplastic resin sheet forming press apparatus includes a pair of platens supported by a frame and independently advanced and retracted. Attach the respective screw shafts of the pair of roller screws or ball screws arranged to the frame, connect them to the drive motor, and attach the respective nut members screwed to these screw shafts to the respective stools. A guide means is provided between the board and the frame to guide the forward and backward displacement of the base with respect to the frame, and each guide means is provided with an adjusting member for adjusting the guide direction of the base.

[0006] In this molding press apparatus, the screw shaft of a roller screw or a ball screw is driven directly or indirectly by a drive motor which can be a servomotor, so that a surface plate with a nut member attached thereto, The molding die attached to the surface plate can be moved back and forth as required along the axis of the screw shaft. Here, when the roller screw is used, each of the plurality of threaded rollers housed in the housing of the nut member is
Since the power is transmitted in line contact with each of the screws formed on the inner peripheral surface of the housing of the screw shaft and the nut member, when power is transmitted in a point contact state with a ball using a ball screw, In addition to a smaller power loss, the load acting on each contact portion can be widely dispersed to transmit a larger power. For example, the power transmission capability between a roller screw having an effective diameter of 70 mm and a ball screw can be transmitted. In comparison, the permissible axial load of the roller screw can be about 3 to 4 times that of the ball screw.

Therefore, under the application of the roller screw, even if the sheet material is a foamed resin sheet, a generally required working force of about 8 to 30 tons can be sufficiently generated only by the roller screw. In addition, the molding operation efficiency and the processing accuracy can be greatly improved.

In this case, the surface plate is moved forward and backward by rotation of a screw shaft based on the operation of a drive motor which can be a servomotor, so that various time lags, mechanical play, etc. do not occur. In particular, the advance limit position can be controlled with high accuracy, and the molding speed can be sufficiently increased regardless of the magnitude of the pressing force.

By the way, the above-mentioned reciprocating displacement of the surface plate is performed sufficiently smoothly in the expected direction under the action of the guide means. The same applies before and after the action of the forming load on the board. Here, the nut member, and eventually the surface plate,
Needless to say, the rotation of the screw shaft is prevented.

Further, in this press apparatus, by providing an adjusting member for adjusting the guide direction of the surface plate in each guide means, the direction of advance and retreat of the surface plate after assembly of the device can be accurately adjusted as expected. Can be. That is, even if each component of the apparatus is manufactured with the required processing accuracy, when a large number of components are assembled into the apparatus,
Due to the assembly error of each part including the component of the guide means and the accumulation of the processing error of each component itself, the surface plate is moved in the direction as expected from the beginning of assembling the apparatus, for example, vertical. In many cases, it is not possible to make accurate displacements in the direction, so in such a case, adjust the direction of movement of the surface plate by operating the adjustment member so that the direction of displacement is always sufficiently close to the vertical direction. Can be.

Here, the guide means of such a molding press device includes an inner cylinder attached to one side of a frame or a platen, an outer cylinder attached to the other side and surrounding the inner cylinder, and an inner cylinder and an outer cylinder. A plurality of rolling guides located at least in the circumferential direction between the cylinders, and a storage portion for the rolling guides, and the adjusting member moves the rolling guides to either the inner cylinder or the outer cylinder. It is preferable that the guide means is constituted by a pressing screw member which presses, and according to this guide means, the advancing / retreating displacement of the surface plate can be reduced by a simple structure under the action of a rolling guide which can be formed into a ball shape, a roller shape or the like. Can be performed smoothly and accurately,
These are more effective when the rolling guides are arranged at a plurality of positions in the axial direction. Also, here, among the set screw members provided at three or more places in the circumferential direction, the tightening amount of the set screw member is adjusted in at least two places, and the contact force of the rolling guide with the inner cylinder or the outer cylinder is adjusted. By correcting, the subtle change in the relative position of the inner and outer cylinders can be easily and easily realized, and as a result, the direction of the advance / retreat displacement of the surface plate can be set to the expected direction.

[0012] In such an apparatus, more preferably, the pressing surface of the rolling guide of the inner cylinder or the outer cylinder is a flat surface or a groove extending in the axial direction, whereby relative rotation of the inner cylinder and the outer cylinder which are usually arranged concentrically is achieved. The rotation is prevented without providing any special means, and the forward and backward displacement of the surface plate accompanying the rotation of the screw shaft is ensured.

Another forming press device according to the present invention is characterized in that each of a screw shaft and a nut member of a pair of roller screws or ball screws is disposed in the same manner as in the above-described device. A tie rod penetrating through the stool and a rolling guide disposed on each of the stools, and provided with a tie rod, for example, a rolling guide that is in contact with the stiffener at an interval in a circumferential direction thereof, and provided with guide means for guiding the reciprocating displacement of the stool, Further, each guide means is provided with an adjusting member for adjusting the guide direction of the surface plate.

The guide means here also has a simple structure, and, similarly to the above-described apparatus, can smoothly and accurately move the platen forward and backward under the action of the rolling guide. In addition, here, based on penetrating a plurality of tie rods through both stools, the stool and the nut member can be prevented from rotating with respect to the screw shaft by the guide means itself.

In this case, preferably, a plurality of adjustment members are provided in each guide means, so that the degree of freedom of adjustment is increased and the adjustment work at each location can be performed while increasing the number of adjustment locations as required. It can be further prepared. By the way, the adjusting member may be constituted by a push screw member for pressing the rolling guide against the tie rod,
This is preferable for simplifying the structure and facilitating the operation.

Still another molding press according to the present invention comprises:
In particular, a guide rod fixed to each surface plate and a rolling guide disposed on the frame side and in contact with the guide rod at intervals in a circumferential direction of the guide rod, for example, are provided so that the forward / backward displacement of each surface plate can be reduced. In addition to providing guide means for guiding,
Each guide means is provided with an adjusting member for adjusting the guide direction of the surface plate. Here, preferably, the adjusting member is constituted by a push screw member for pressing the rolling guide against the guide rod.

In this molding press apparatus, the configuration of the male and female guide means is substantially reversed from that of the above-mentioned apparatus using a tie rod. An effect can be brought about.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an embodiment of the present invention in a case where roller screws are used. In the drawing, reference numeral 1 denotes an entire frame supporting each component of the apparatus, and 1a and 1b denote frame members, respectively. One beam member and cross member are shown.

Here, an upper surface plate 2a and a lower surface plate 2b, which form a pair in the up-down direction, are respectively arranged on the beam member 1a and the cross member 1b so as to face each other. , 2b, also independently of each other, by the operation of respective drive motors, for example servo motors 3a, 3b, which are fixed to each of the beam member 1a and the cross member 1b, respectively, in the approach direction in which they approach each other and They can be displaced in the respective retreating directions separated from each other by a required displacement amount. For this reason, as shown in the figure, the respective surface plates 2a, 2b are connected to the respective servo motors 3a, 3b via the timing belts 4a, 4b.
b.

Here, the upper and lower molding dies 5a and 5b which define the required cavities corresponding to the molded products are preferably aligned with the respective platens 2a and 2b, preferably with their axes aligned as shown by broken lines in the figure. And fixed.

In the figures, Ca and Cb denote center axes including the surface plates 2a and 2b and the related roller screws and the like, which are not shown in the figure, respectively.
Their central axes are located on one vertical line, and the respective platens 2a and 2b are moved forward and backward on that vertical line.

Here, the respective surface plates 2a, 2b
However, the arrangement on the frame 1 can be performed as shown in FIG. By the way, the arrangement of the lower stool 2b is substantially the same as the upper stool 2a.
Since this corresponds to the upside down, it is not illustrated here.

FIG. 2 shows a servo motor 3a fixed to the beam member 1a of the frame 1 in a vertical position.
The timing belt 4a is mounted on pulleys 8 and 9 in which a beam shaft 1a and a screw shaft 7 of a roller screw 6, which is also arranged in a vertical posture, are fitted to and fixed to a servo motor output shaft and a screw shaft end, respectively. The nut member 10 of the roller screw 6 screwed to the screw shaft 7 is attached to the upper stool 2a by driving and connecting it by bridging.

Here, the screw shaft 7 is rotatably supported on the beam member side while maintaining a vertical posture by a radial bearing 12 disposed between the screw shaft 7 and the casing 11, and a thrust bearing 13. Irrespective of the magnitude of the axial load acting on the roller screw 6, the screw shaft 7 is always supported to smoothly rotate.

Such bearing support of the screw shaft 7 is achieved by the outer cylinder member 14 being formed by a flange provided at an intermediate portion thereof.
Attached to the beam member 1a in a vertical position,
An upper end flange of the casing 11 is fixed to an inward flange provided at an upper end of the outer cylinder member 14.
Two radial bearings 12 are disposed on one cylindrical portion at an interval in an axial direction of the cylindrical portion, and a lower end of the cylindrical portion of the casing 11 and a bottom portion attached to the cylindrical portion by screwing or the like. One thrust bearing 13 is provided between the bearing ring 15 and the bearing cap 16 and the distance ring 1 disposed above the casing 11.
7 and another one of the thrust bearings 13 is provided.

Here, the lower end flange 19 of the inner cylinder member 18 disposed inside the outer cylinder member 14 is fastened and fixed to the upper surface of the upper stool 2a. It is located coaxially with the member 14. The inner cylindrical member 18 also has an inward flange 20 at a lower end thereof, and the nut member 10 is directly fixed to the inward flange 20 with its own flange.

When the inner cylinder member 18 and the outer cylinder member 14 are attached to the platen side and the beam member side in this way, the two cylinder members 18, 1
For example, when the cylindrical member 4 is formed in a cylindrical shape, four rails 21 extending in the axial direction at intervals of 90 ° in the circumferential direction are provided on the outer peripheral surface of the inner cylindrical member 18 by welding, screwing, or the like. The surfaces of these rails 21 are made flat surfaces as shown in the enlarged cross-sectional views of the main parts in FIGS. On the other hand, on the inner peripheral surface of the outer cylinder member 14, the rail 21
The storage member 22 of the rolling guide is mounted at a position corresponding to the arrangement position of the roller guide, and as shown in FIG. LM rollers (manufactured by THK Co., Ltd.) are held at a distance from each other in the axial direction of the outer cylinder member 14, and two of them are accommodated and arranged in the drawing. The contact state of each roller of the guide 23 with the flat surface of each rail 21 can be appropriately adjusted by a set screw member 24 disposed so as to penetrate from the outer cylinder member 14 to the storage member 22. In this case, each roller of the rolling guide 23 extends in the width direction of
Contact 1

Thus, here, the inner and outer cylindrical members 18 and 14, the rail 21 provided on the inner cylindrical member 18,
The inner cylindrical member 18 with respect to the outer cylindrical member 14 is formed by the storage member 22 and the rolling guide 23 abutting on the rail surface.
As a result, guide means for guiding the forward / backward displacement of the upper surface plate 2a with respect to the beam member 1a is constituted,
Thus, an adjusting member that adjusts the state of contact of the rolling guide 23 with the rail surface, and furthermore, the direction in which the upper surface plate 2a moves forward and backward with respect to the beam member 1a. Further, the guide means here is based on the abutment of each roller on the flat surface of the rail 21, and the outer cylindrical member 1
It also functions as a detent means for restraining the relative rotation of the nut member 10 with respect to the screw shaft 7 by restricting the relative rotation with respect to the beam member 1 and the beam member 1a.

As shown in FIG. 5, the LM roller as an example of the rolling guide 23 has a plurality of rollers 23b assembled around a high rigidity track 23a. Each of the rollers 23 is held in the housing 23c so as to circulate.
b is slightly exposed from the inner cylinder member side, and the storage member 2 of such a rolling guide 23
3 and 4, each rolling guide 23 is attached to a spring pad 25.
And the spacer 26
The mounting guide 27 is fixed to the storage member 22 through the rolling guide 23, and directly to the raceway 23 of the rolling guide 23.
The adjustment of the pressing force of the inner cylindrical member 18 by the rolling guide 23 is performed by operating the pressing screw member 24 which comes into contact with the spring pad 25, and the rail 21 of each roller 23b is adjusted. This is performed by adjusting the state of contact with the surface.

According to the guide means and the adjusting member as described above, when assembling a molding press device, for example, a device portion related to the upper stool 2a, a processing error of each component and an error in each assembling process. Even if the assembly does not achieve the expected operation accuracy due to accumulation of assembly errors and other factors, the required accuracy can be ensured based on the operation of the adjusting member. It becomes possible.

That is, even if each of the various components of the apparatus is machined with the required machining accuracy, assembling a plurality of components results in accumulation of machining errors of each component, and also assembling. Since errors will also accumulate, the device or device part at the end of the assembly will often not be able to achieve the expected operating accuracy as it is, which is illustrated in FIG. As can be seen, the effects of the accumulation of the respective errors appear particularly large in the guide means disposed between the movable side portion and the fixed side portion, and the actual forward / backward displacement direction of the upper stool 2a is in a required direction. The deviation from a certain vertical direction will be relatively large. Therefore, in such a case, the tightening amount of the bolt 24a of the push screw member 24 is adjusted at at least one position, usually a plurality of positions, in the circumferential direction of each of the cylindrical members 14, 18, and the rolling guide 23 by the spring pad 25 is adjusted. And the contact force of each roller 23b of the rolling guide 23 with the rail 21 provided on the inner cylindrical member 18 is adjusted, whereby the direction of the forward and backward displacement of the upper surface plate 2a can be corrected. As close as possible to the vertical direction. here,
After adjusting the tightening amount of the bolt 24a, the lock nut 24b is adjusted.
To securely lock the positions of the bolts 24a and the rolling guides 23 to sufficiently prevent their unexpected displacement.

The same applies to the case where the device parts related to the lower stool 2b are assembled. At the end of the assembly, the required operation accuracy in the direction of the reciprocation of the lower stool 2b can be obtained. Even if there is not, by operating the push screw member, it is possible to make the direction of its advance / retreat displacement sufficiently close to the vertical direction.
With such adjustments for a and 2b, both platens 2a,
The forward / backward displacement trajectory of the center 2b, for example, at the center position can be aligned with high accuracy on one vertical line segment.

Accordingly, a diagram comprising the above-described apparatus portion related to the upper surface plate 2a and the device portion related to the lower surface plate 2b having a configuration in which the upper and lower positions thereof are substantially reversed. The molding press device 1 operates under the action of the servomotors 3a and 3b, and the upper and lower platens 2a and 2
b can be smoothly advanced and retracted with high accuracy on a common vertical axis, and the superior engagement accuracy of the respective molding dies attached to the upper and lower platens 2a, 2b;
In other words, excellent definition accuracy of the cavity can be ensured.

In addition, in this forming press apparatus, the respective platens 2a and 2b, and furthermore, the forming dies are advanced and retracted by the action of the roller screws 6 based on the operation of the servo motors 3a and 3b. In particular, it is necessary to form the thermoplastic foamed resin sheet based on the characteristic inherent to the roller screw 6, not only to be able to greatly improve the dimensional accuracy of the molded product by specifying the advance limit position with high precision. Such a large axial force can be sufficiently generated.

That is, in this roller screw 6, FIG.
As shown in a perspective view with a part broken away in FIG.
A nut member 10 that is screwed to a screw shaft 7 having a plurality of threads such as five, five, six, etc.
A plurality of rollers 10b meshing with both the screw formed on the inner peripheral surface of the screw shaft 0a and the screw thread of the screw shaft 7 are housed in the nut housing 10a at an interval in the circumferential direction of the screw shaft 7 to form a single thread. Roller 10b formed with a triangular screw
However, under the action of the load P on the roller screw 6, FIG.
As shown in the partial cross-sectional view of FIG.
Since each of the screws of the nut housing 10a is substantially in linear contact with each other, the load can be effectively dispersed as compared with the case where a ball screw is used. As a result, the power transmission capacity is greatly improved. Thus, a large axial force can be generated, and the power transmission loss can be effectively reduced.

FIG. 7 is a schematic cross-sectional view showing another embodiment of the guide means and the adjusting member. Here, each of the inner cylindrical member 18 and the outer cylindrical member 14 is originally formed into a rectangular cylindrical shape coaxially located, and the inner cylindrical member 18
Each of the rails 21 having a trapezoidal cross section is disposed extending in the axial direction at positions facing each other on the outer surface of the rail, and the respective legs of each rail are provided with the same configuration as described above. The rolling guides 23 are brought into contact with each other, and the contact state of each rolling guide 23 with the leg is determined by the set screw member 2.
4 can be adjusted.

Therefore, also in this case, the inner and outer cylindrical members 18 and 14 and the rails 21 provided on the inner cylindrical member 18 are also provided.
A guide means for guiding the reciprocating displacement of the platen 2a, 2b is provided by a rolling guide 23 which comes into contact with the rail surface and a storage member 22 thereof, and a reciprocating movement of the platen 2a, 2b is provided by a set screw member 24. An adjusting member for adjusting the displacement direction is configured.

Each rolling guide 23 here
3 and 4 is held in the storage member 22 via the spring pad 25, and the spring is adjusted based on the adjustment of the amount of tightening of the bolt 24a of the set screw member 24, as described with reference to FIGS. The pressing force by the pad 25, in other words, the contact force of each roller 23b with the rail 21 is adjusted.

In this embodiment, each roller 23b of the rolling guide 23 is connected to a trapezoidal rail 21.
To make full line contact with the legs over their entire length,
The storage member 22 is disposed on a surface of the mounting seat 31 provided on the inner surface of the outer cylinder member 14 and parallel to the rail legs, and the lock nut 24b of the push screw member 24 exhibits its function sufficiently. The lock nut 24 is provided on a surface of the nut seat 32 provided on the outer surface of the outer cylinder member 14 in parallel with the rail leg.
b is seated.

With the above-described configuration, various errors can be obtained by appropriately adjusting the contact force of the rolling guide 23 with the rail 21 and the inner cylinder member 18 based on the operation of the set screw member 24. And the guide means can guide the forward / backward displacement of the surface plate sufficiently smoothly and accurately. In addition, the relative rotation of the inner and outer cylindrical members 18 and 14 can be reliably prevented based on the contact of the rolling guide 23 with the flat surface of the rail 21.

In each of the embodiments of the guide means described above, the roller 23 of the rolling guide 23 is used.
b can be a ball, and rolling guide 2
Instead of the flat surface described above, the contact surface of the rail 21 with which the contact member 3 abuts may be a groove that allows the roller 23b or the ball to enter. In these cases, The guide means can function in the same way as described above.

FIG. 8 is a side view showing an embodiment of another molding press. Here, the beam member 1a and the cross member 1b of the frame 1 are interconnected by a plurality of, for example, four tie rods 41, and these tie rods 41 are connected to the respective bases 2a, 2a.
As shown in an enlarged cross-sectional view of FIG. 9A, a large number of balls 43a penetrate through the bearings 42a and 42b provided at the four corners of the base 2b. A bolt of the push screw member 24 as an adjusting member that accommodates the linear bush 43 that performs infinite linear motion in the axial direction so as to be displaceable in the radial direction thereof and that changes the radial position of the linear bush 43. 24a is made to penetrate the bearing portion 42a from a plurality of places and is brought into contact with the linear bush 43.

Here, the positioning of the linear bush 43 in the axial direction of the bearing portion 42a is performed by, for example, the groove 44a provided in the axially central portion of the annular storage member 44 attached to the inner peripheral surface of the bearing portion 42a. Linear bush 43 into
Can be performed. Here, it is also possible to mount a plurality of the linear bush 43 and the push screw member 24 at intervals in the axial direction of one bearing portion.

According to such a configuration, after the assembling of the forming press device, in each of the bearing portions 42a and 42b through which each of the four tie rods 41 penetrates, an interval is set in the circumferential direction of each of the bearing portions 42a and 42b. By operating at least one of the plurality of push screw members 24 arranged in the above, the adjustment of each of them can be easily performed, and the forward and backward displacement directions of the upper and lower stools 2a and 2b are as expected. Direction and the respective bearings 42a, 42
b, the linear bush 43, the annular storage member 44, and the tie rod 41 with which the ball 43a of the linear bush 43 abuts.
The forward / backward displacement of b can be guided sufficiently smoothly and reliably. In this case, since the tie rods 41 penetrate a plurality of places of the respective bases 2a and 2b, it is not necessary to separately provide a detent means for the bases 2a and 2b.

By the way, in the above-mentioned bearing portion, it is divided into a plurality of circumferentially divided structures, for example, FIG.
In addition, the bearing portion 42a may have a two-part structure as shown in the example, and two semi-cylindrical open linear bushes 45a and 45b may be provided in each of the divided parts. According to this, by assembling the bearings 42a and 42b after disposing the bases 2a and 2b at predetermined positions, the work of inserting the bases 2a and 2b into the tie rods 41 is particularly facilitated. Can be.

FIG. 10 is a side view showing still another embodiment of the molding press apparatus. This is the upper and lower platens 2
a, 2b, for example, at four corners, respective guide rods 51a,
The guide rods 51a and 51b are allowed to pass through the guide members 51a and 51b on the frame side, for example, on the beam member 1a and the cross member 1b, respectively, and the guide means 52a and 52 circumscribed therewith.
b.

Here, each of the guide means 52a and 52b can have substantially the same configuration as that described with reference to FIG. 9, and this also applies to the set screw member as the adjustment member. . Therefore, the same operation and effect as those of the above-described respective devices can also be obtained by this molding press device.

Although the embodiment of the present invention has been described with respect to the case where a roller screw capable of providing a large shaft output is used, when a non-foamed resin sheet is used as a thermoplastic resin sheet as a molding material, required processing is performed. Since a force of about 3 tons or less is sufficient, in such a case, the desired forming process can be sufficiently performed by using a ball screw instead of the roller screw described above. Therefore, the same operation and effect as described above can be realized by applying each of the guide means and the adjust means described above to this device.

[0049]

As described above, according to the present invention, a sufficiently high shaft output can be obtained under the action of the roller screw, and a simple, lightweight and small-sized device can be obtained, and excellent molding accuracy can be obtained. In addition to providing the molding operation efficiency, the adjustment member can sufficiently absorb the accumulation of the assembly error, the processing error, and the like, and can set the direction of the advance / retreat displacement of each platen to the required direction with high accuracy.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of FIG.

FIG. 3 is a cross-sectional view showing a rolling guide and a set screw member.

FIG. 4 is a longitudinal sectional view showing a rolling guide and a set screw member.

FIG. 5 is a view showing a rolling guide.

FIG. 6 is a view showing a roller screw.

FIG. 7 is a schematic cross-sectional view showing another form of the guide means and the adjustment member.

FIG. 8 is a side view showing an embodiment of another forming press device.

FIG. 9 is a cross-sectional view showing a rolling guide and a set screw member.

FIG. 10 is a side view showing still another embodiment of the molding press apparatus.

[Explanation of symbols]

 Reference Signs List 1 frame 1a beam member 1b cross member 2a upper surface plate 2b lower surface plate 3a, 3b servo motor 4a, 4b timing belt 5a, 5b molding die 6 roller screw 7 screw shaft 8, 9 pulley 10 nut member 10a nut housing 10b roller 11 Casing 12 Radial bearing 13 Thrust bearing 14 Outer cylinder member 15 Bottom seat 16 Bearing cap 17 Distance ring 18 Inner cylinder member 19 Lower flange 20 Inward flange 21 Rail 22 Storage member 23 Rolling guide 23a Way rail 23b Roller 24 Push screw member 24a Bolt 24b Lock nut 25 Spring pad 26 Spacer 27 Mounting bracket 31 Mounting seat 32 Nut seat 41 Tie rod 42, 42b Bearing 43 Linear bush 44 Ring Paid member 44a grooves 45a, 45b open type linear bushing 51a, 51b guide rod 52a, 52b guide means

Claims (7)

[Claims] 1. A forming press device comprising a pair of platens supported by a frame and independently advanced and retracted, wherein each screw shaft of a pair of roller screws or ball screws arranged in alignment with each other. Are attached to the frame and connected to the drive motor, and nut members screwed to their screw shafts are attached to the respective platens, and between each platen and the frame, the platen advances and retreats with respect to the frame. A thermoplastic resin sheet forming and pressing apparatus, wherein guide means for guiding displacement are provided, and each guide means is provided with an adjusting member for adjusting a guide direction of a surface plate. 2. An inner cylinder attached to one side of a frame or a platen, an outer cylinder attached to the other side surrounding the inner cylinder, and at least a circumferential direction between the inner cylinder and the inner cylinder. A plurality of rolling guides positioned at intervals, and a rolling guide storage portion, and the adjusting member is formed by a push screw member that presses the rolling guide toward one of the inner cylinder and the outer cylinder. The thermoplastic resin sheet forming press device according to claim 1, wherein 3. The thermoplastic resin sheet forming press apparatus according to claim 1, wherein the pressing surface of the rolling guide of the inner cylinder or the outer cylinder is a flat surface or a groove extending in the axial direction. 4. A forming press device comprising a pair of platens supported by a frame and independently advanced and retracted, wherein each screw shaft of a pair of roller screws or ball screws arranged in alignment with each other. Is attached to the frame and connected to the drive motor, and each nut member screwed to the screw shaft is attached to each platen, and is fixed to the frame, and a tie rod penetrating both platens, and It has a rolling guide that is arranged on the surface plate and comes into contact with the tie rod, a plurality of guide means for guiding the forward and backward displacement of each surface plate is provided, and an adjust member for adjusting the guide direction of the surface plate is provided for each guide means. Forming press machine for thermoplastic resin sheet. 5. The thermoplastic resin sheet forming press apparatus according to claim 4, wherein said adjusting member is constituted by a push screw member for pressing a rolling guide against a tie rod. 6. A forming press device comprising a pair of platens supported by a frame and independently advanced and retracted, wherein each screw shaft of a pair of roller screws or ball screws arranged in alignment with each other. Are attached to the frame and connected to the drive motor, and the respective nut members screwed to their screw shafts are attached to the respective stools, and guide rods fixed to the respective stools and arranged on the frame side. Thermoplastic resin having a rolling guide that comes into contact with a guide rod, providing a plurality of guide means for guiding the advance and retreat displacement of each surface plate, and providing an adjust member for adjusting the guide direction of the surface plate for each guide means. Sheet forming press equipment. 7. The thermoplastic resin sheet forming press apparatus according to claim 6, wherein the adjusting member is constituted by a push screw member for pressing a rolling guide against a guide rod.