JPH06328553A - Lifting frame stop device for resin plate molding device - Google Patents

Abstract

PURPOSE:To prevent the seizure or the like of a reversible motor moving on a lifting frame by stopping the movement by means of a forced movement stop means when the lifting frame is positioned outside the given range of movement. CONSTITUTION:A heating means provided with a preheating oven 6, a heating oven 7 and the like installed in a heater, a molding means for press molding and a lifting frame 3 with a hanger for hanging a resin plate 1 are provided to be lifted and lowered freely. The lifting frame 3 can be moved back and forth forcibly by a reversible motor 22. The resin plate 1 preheated in the preheating oven 6 is heated in the heating oven 7 to mold a given molded product in a molding device 8. When the lifting frame 3 is deviated from the given range of movement, the deviation is sensed by a stop sensor to stop the driving of the reversible motor 22 and also stop the movement of the lifting frame 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting frame stopping device in a resin plate molding apparatus for pressure-molding a resin plate such as polycarbonate.

[0002]

2. Description of the Related Art When an elevating frame moves out of a predetermined moving range, a fixed receiving member receives the elevating frame.

[0003]

However, since the forced moving means (for example, the motor) is driven even in the received state, this motor may cause a failure such as burning or damage.

[0004]

SUMMARY OF THE INVENTION The present invention provides a lifting frame stopping device in a resin plate molding apparatus capable of preventing the failure of the forced moving means, and has taken the following technical means. That is, it comprises a heating means, a molding means, and an elevating frame 3 having a hanger-2 for suspending the resin plate 1. The hanger-2 is provided on the elevating frame 3 so as to be able to move up and down, and the elevating frame is also provided. In the resin plate molding apparatus in which the resin plate 1 heated by the heating means is molded by the molding means, the lifting frame 3 is located outside the predetermined moving range. The lifting frame stopping device in the resin plate molding apparatus is configured to stop the forced movement.

[0005]

Function: The elevating frame 3 having the hanger 2 for suspending the resin plate 1 moves to the heating means, the molding means, etc., and the resin plate 1 heated by the heating means is molded by the molding means. When the elevating frame 3 is located outside the predetermined moving range during the movement, the driving of the forced moving means for moving the elevating frame 3 is stopped.

[0006]

[Effect] When the elevating frame 3 is located outside the predetermined moving range, the driving of the forced moving means is stopped, so that the failure of the forced moving means can be prevented.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, its configuration will be described. The resin plate molding apparatus 4 includes a preheating furnace 6, a heating furnace 7, a molding apparatus 8 for mold clamping, a moving apparatus 9 and the like. The preheating furnace 6 is a box-shaped case 10 having an open upper surface, an infrared heater (not shown) provided in the case, and a preheating furnace for opening and closing the opening of the case 10. It has a lid 11 and the like.

The heating furnace 7 has a box-shaped case 12 having an open upper surface, an infrared heater (not shown) provided in the case, and the like. The molding device 8 is a molding die 74 that molds the resin plate 1 with a receiving die 72 and a pushing die 73 that is capable of moving (reciprocating) with respect to the receiving die 72, a front side of the receiving die, and a foot petal. A control box 15 having a switch 13 and a display 14 in communication with (not shown) is provided. In the front view of the resin plate molding apparatus 4, the preheating furnace 6 is provided on one side of the molding apparatus 8 and the heating furnace 7 is arranged on the other side.

The moving device 9 has one end in the longitudinal direction located above the middle part of the preheating furnace 6 and the other end located above the middle part of the heating furnace 7, and a horizontal frame 16 provided at a predetermined interval in the vertical direction.
And a vertical frame 1 connecting the horizontal end portions of the two horizontal frames 16 to each other.
A moving frame 18 of 7 is provided. A moving cylinder having one end connected to one vertical frame 17 and the other end connected to the other vertical frame 17 in the space formed by the two horizontal frames 13 of the moving frame 18. A (rodless cylinder) 19 is provided.

Further, a slide body 20 having a concave portion on the bottom surface of the horizontal frame 13 on the lower side of the moving frame 18 and in the middle portion in the left-right direction in a front view is detachably attached. The sliding body 20 has detachably attached to the upper and left side walls of the molding device 8 are convex guide bodies 21 which are long in the front-rear direction. The sliding body 20 has a shaft center in the front-rear direction and is configured to move in the front-rear direction by a screw shaft 23 that rotates forward and backward by a forward-reverse rotation motor 22 with a brake. A sensor mounting body 7 having stop sensors (in the embodiment, a limit switch is not limited to this) 75 at both ends of the guide body 21 not provided.
6 is provided. Then, the stop sensor 75 is
It is provided outside the zero range of movement and near the end of movement. Further, the forward / reverse rotation motor 22 is detachably attached to the rear mounting bodies of the mounting bodies 24 mounted on the front and rear ends of the guide body 21, respectively, and the screw shafts 23 are rotatably provided on the respective mounting bodies 24. There is. Further, a magnetic body 25 for adsorbing to the magnetic receiver 26 of the preheating furnace lid 11 is provided on the bottom surface of the moving frame 18 on the preheating furnace side, and the upper surface of the case 10 is opened when the moving frame 18 moves to the front side. It is configured such that the opening portion is opened when the portion is closed and moved to the rear side.

The elevating frame 3 is a frame formed by bending a flat plate that is long in the up-down direction at both left and right ends in a front view.
An elevating cylinder (rodless cylinder) 28 having a frame 27 and a shaft center in the vertical direction and having shock absorbers 70, 71 at the upper and lower ends of the middle of the frame 27 is provided. A frame attachment plate 29 is integrally attached to the back surface of the middle portion and the lower end portion of the frame 27, and the frame attachment plate 29 is provided on the front surface of the lateral frame 16 in substantially the entire width. It is detachably attached to a moving body 31 which is provided so as to be movable laterally with respect to the body 30. The movable body 31 is configured to be movable to the guide body 30 via a bearing.

The lifting cylinder 28 is provided with hanger receivers 32, which are bent at the left and right end portions and the upper and lower end portions, respectively, in the front view and are movable in the vertical direction. Then, a supporting rod 3 in which both left and right ends of the hanger receiving body 32 are bent to form an upright surface, the both ends of which are projected laterally.
A hollow pipe 34 having a shaft center extending in the same direction as the shaft center of the elevating cylinder 28 in a front view is attached to an upright surface formed by bending both upper and lower ends of the elevating cylinder 28 while penetrating 3 therethrough. Reference numeral 35 denotes an adjusting rod which is inserted into the tube 34, and is provided with a screw 36 so that the position of the tube 34 can be adjusted in the vertical direction. In addition, the supporting rod 33 is provided with a plurality of air cylinders 39 (in the embodiment, 4 cylinders) each having a piston 38 that opens and closes by opening and closing the grip 37 provided at the lower end.
It is attached). One of 40 and 41 is air cylinder 3
Air pipes 43 and 44 connected to the solenoid valve 42, which is provided at both upper and lower ends of 9 so as to communicate with the air source (not shown).
Is an air pipe connecting one to the lift cylinder 28 and the other to an electromagnetic valve 45 provided to communicate with the air source, and 46 and 47 are electromagnetic valves provided to communicate with the moving cylinder 19 and the other to communicate with the air source. It is an air pipe connected to 48.

Shock absorbers 49 and 50 are provided near the stop positions of the hanger frame 26 at the left and right ends of the moving cylinder 19, respectively. Further, in a front view of the molding apparatus 8, a shock absorber 51 is arranged substantially below the adjustment rod 35 at a molding center line L in a substantially vertical direction and in front of a moving path of the frame 27. The shock absorber 51 is attached to the lower surface of the lower horizontal frame 16 so that the shock absorber 51 is detachably attached.
It is provided in 2. The shock absorber 5 is provided near the molding center line L in the vertical direction and on the side opposite to the heating device 7 in the front view of the molding device. The shock absorber 5 is detachably attached to the piston 54 of the twin cylinder 53 detachably attached to the lower horizontal frame 16, and the expansion and contraction of the piston 54 allows the movement path of the frame 27. Alternatively, it is provided behind the moving path so that the position can be changed. 55 and 56 are twin cylinders-5
3 and a solenoid valve 6 provided so as to be able to communicate with an air source (not shown)
It is an air pipe connected to 3. The shock absorbers 5, 49, 50, 51 may be any means such as gas or liquid.

Sensors (proximity switches) 57, 5 for detecting arrival of the hanger frame 26 at both left and right ends of the moving cylinder 19 and while reaching a predetermined stop position.
8 and a sensor (proximity switch in the embodiment) 59 for detecting arrival of the elevating frame 3 between the stop position on the heating device side and the predetermined stop position for the molding device 8 in the middle part. . Further, sensors (proximity switches in the embodiment) 60, 61 and 62 for detecting arrival of the hanger receiver 32 are provided on the frame 27 facing the lower part, the intermediate part and the upper part of the lifting cylinder 28.

Next, the molding device 8 shown in FIG. 8 will be described. The receiving mold 72 is detachably attached to a fixed plate 77, and the pressing mold 73 is reciprocally moved by a press cylinder 78. It is detachably mounted on a die mounting plate 81 which is integrally provided with an air cylinder 80 which is detachably mounted on. Then, a piston 82 that slides in the air cylinder is provided, and a mold 7 is attached to the tip of the piston 82.
A clamping plate 83 for clamping the flange portion of the resin plate 1 with 2 is attached. Reference numeral 84 denotes a sensor (a limit switch in the embodiment, which is not limited to this) which is detected when the movable plate 79 type 72 side movement end or a position near it is reached. 8
5 internal space and communication with 2 port type 72 - a preparative type electromagnetic valve, a vacuum pump 87 which is driven continuously through the vacuum tank 86 has a vacuum tank 86 in the order of 10- ² Torr It is provided so that it can communicate with. The volume of the vacuum tank 86 is about 5 times the volume of the inner space of the mold 72, and when the solenoid valve 85 is opened, the molded product 88 and the mold 72 are closed.
The space 89 formed by the inner space and the inner space is configured to have a negative pressure.

Explaining the block circuit of FIG. 9,
Reference numeral 64 denotes an arithmetic control unit (hereinafter, referred to as CPU) of a microcomputer having a memory (not shown) containing a program, various data, etc., and executes arithmetic operations such as arithmetic / logic and comparison. Together with each control. The information input to the CPU 64 via the input interface 65 includes gripper tool “open” information from the switch 13 and power supply “ON” and “OFF” from the main switch 66.
Information, detection information from the sensors 57, 58, 59, 60, 61, 62, setting number information from the molding number setting tool 67, motor 22 stop information from the stop sensor 75, negative pressure information from the sensor 84, etc. There is. Also, the output interface 68
As the command signal output from the CPU 64 via the display device 14, the display signal to the display tool 14, the solenoid valves 42, 45, 48, 63
Excitation signal, a notification signal to a notification lamp 69 for notifying the end of molding work when the set number of moldings has been reached, a drive / stop signal to the motor 22, an excitation signal to the solenoid valve 84 (this time It can be arbitrarily selected). The control and timing of each operating unit is configured to be performed by receiving a command from the CPU 64 of the microcomputer by a preset program.

Next, the operation will be described using the block circuit of FIG. First, the main switch 66 is turned “ON” and the molding number is set by the molding number setting tool 67, and the preheating furnace 6
From the point of taking out the resin plate 1 which has been heated in advance at a temperature of about 110 to 120 ° C. for a predetermined time,
A normal drive command signal is output from the PU 64 to the normal / reverse rotation motor 22 through the output interface 68 for a predetermined time.
Then, since the forward / reverse rotation motor 22 is driven to rotate the screw shaft 23, the sliding body 20 also slides rearward on the guide body to reach a predetermined position in a front view. In this case, the moving device 9 also moves (retracts) in the same direction as the sliding body 20 moves, but the magnetic body 25 adsorbs the magnetic receiver 26 of the preheating furnace lid 11 to open the upper surface of the case 10 ( Hereinafter, it is referred to as a preheating furnace lid opening step).

Subsequently, when the CPU 64 outputs an excitation signal to the solenoid valve 45, air enters the elevating cylinder 28 from the air pipe 43, and the air in the elevating cylinder is discharged from the air pipe 44. Forcibly lowers the lifting cylinder 28. After that, when the sensor 60 detects the arrival of the hanger-receiving body 32, the CPU 64 stops the output of the excitation signal to the solenoid valve 45. Then, the lifting cylinder 28
Since the supply / exhaust of the hanger-receiver 32 is also stopped and the forcible lowering of the hanger-receiver 32 is stopped, the hanger-receiver 32 inertially descends from the position facing the sensor 60 at a reduced speed. Then, after a preset time, the CPU 64 again causes the solenoid valve 45 to
The excitation signal is output to. Then, the air enters the elevating cylinder 28 from the air tube 43, and the air in the elevating cylinder is discharged from the air tube 44, so that the hanger receiver 32 is forcibly lowered and hits the shock absorber 71 to a predetermined position. Stop (hereinafter referred to as a descent stop step). And CPU
Reference numeral 64 stops the output of the excitation signal to the solenoid valve 45. In this case, the upper end of the preheated resin plate 1 has entered the open space of the grip 25.

Subsequently, when the CPU 64 outputs an excitation signal to the solenoid valve 42, air is supplied from the air pipe 41 to the air cylinder 27 and air in the air cylinder is discharged from the air pipe 40, so that the piston 38 contracts. (Moving up)
The gripper 37 grips the resin plate 1. Next, the CPU 64
When the excitation signal is output to the solenoid valve 45 for a predetermined time, the air enters the lifting cylinder 28 from the air pipe 44 and the air in the lifting cylinder is discharged from the air pipe 43.
The hanger receiver 32 forcibly raises the lifting cylinder 28. After that, when the sensor 62 detects the arrival of the hanger-receiver 32, the CPU 64 stops the output of the excitation signal to the solenoid valve 42. Then, the air supply / exhaust to the lifting cylinder 28 is also stopped and the forcible rise of the hanger-receiver 32 is stopped, so that the hanger-receiver 32 rises in inertia from the position facing the sensor 62 while decreasing its speed. Then, after a preset time, the CPU 64 outputs the excitation signal to the solenoid valve 42 again. Then, the air flows from the air pipe 44 to the lifting cylinder 2
8, the air in the lift cylinder is discharged from the air pipe 43, so that the hanger receiver 32 is forcibly lifted and hits the shock absorber 70 to stop at a predetermined position (hereinafter, lift stop step). Called). Then, the CPU 64 stops outputting the excitation signal to the solenoid valve 42.

Subsequently, when the CPU 64 outputs a reverse rotation drive command signal to the forward / reverse rotation motor 22 for a predetermined time, the forward / reverse rotation motor 22 is driven to reverse the screw shaft 23, so that the sliding body 20 and the guide body are also rotated. 21 slides forward and returns to the original position. In relation to this, the moving device 9 and the magnetic body 25 also move in the same direction, but in this case, the preheating furnace lid 11 adsorbed to the magnetic body 25 via the magnetic receiver 26 is the case of the preheating furnace 6. The upper surface open portion of the cloth 10 is closed (hereinafter referred to as a preheating furnace lid closing step).

When the CPU 64 outputs an excitation signal to the solenoid valve 48, the air moves from the air pipe 47 to the moving cylinder 1
9, the air in the moving cylinder is discharged from the air pipe 47, so that the elevating frame 3 is forcibly moved toward the heating furnace 7. After that, when the sensor 57 detects the hanger frame 26, the CPU 64 stops outputting the excitation signal to the solenoid valve 48. Then, the supply / exhaust to / from the moving cylinder 19 is also stopped and the forced movement of the elevating frame 3 is stopped, so that the elevating frame 3 inertially moves from the detection position while slowing down. Then, after a preset time, the CPU 34 outputs the excitation signal to the solenoid valve 48 again.
Then, the air is supplied from the air pipe 46 to the moving cylinder 19, and the air in the moving cylinder is discharged from the air pipe 47, so that the elevating frame 3 is forcibly moved and hits the shock absorber 50 at a predetermined position. Stop (hereinafter, referred to as a left movement stop step). Then, the CPU 64 stops outputting the excitation signal to the solenoid valve 48.

Next, the CPU 64 outputs an excitation signal to the solenoid valve 45, and performs the same work as the above "descent stop step". Then, the resin plate 1 grasped by the grasping tool 37 and suspended is supplied to a predetermined position of the case 12 of the heating furnace 7,
Here, it is heated at a temperature of about 160 to 170 ° C. for a predetermined time. Upon completion of the heating work, the CPU 64 causes the solenoid valve 45
An excitation signal is output to and the same work as the above "rising stop step" is performed. Subsequently, when the CPU 64 outputs an excitation signal to the solenoid valve 48, air is supplied to the moving cylinder 19 from the air pipe 47 and air in the moving cylinder is discharged from the air pipe 46, so that the elevating frame 3 is formed. It is forcibly moved towards the device 8. After that, when the sensor 59 detects the elevating frame 3, the CPU 64 stops the output of the excitation signal to the solenoid valve 48. Then, the supply / exhaust to / from the moving cylinder 19 is also stopped and the forced movement of the elevating frame 3 is stopped, so that the elevating frame 3 inertially moves while decreasing its speed from the detection position. Further, since the CPU 64 outputs an excitation signal to the solenoid valve 63, the air enters the twin cylinder 53 from the air pipe 55, and the air in the twin cylinder is the air pipe 5.
It is discharged from 6. In this connection, the piston 54 moves the extension shock absorber 5 into the movement path 27 of the frame 27. Then, the CPU 64 outputs the excitation signal to the solenoid valve 48 again after a preset time. Then, the air is supplied from the air pipe 47 to the moving cylinder 19, and the air in the moving cylinder is discharged from the air pipe 46, so that the hanger frame 26 is forcibly moved and hits the shock absorber 5 at a predetermined position. (Hereinafter, referred to as a molding movement stopping step). Then, the CPU 64 stops outputting the excitation signal to the solenoid valve 48.

Subsequently, when the CPU 64 outputs an excitation signal to the solenoid valve 45, the air enters the elevating cylinder 28 from the air tube 43 and the air in the elevating cylinder is discharged from the air tube 44. Forcibly lowers the lifting cylinder 28. After that, when the sensor 61 detects the arrival of the hanger-receiving body 32, the CPU 64 stops the output of the excitation signal to the solenoid valve 45. Then, the lifting cylinder 28
Since the supply / exhaust to and the forcible movement of the hanger-receiver 32 are also stopped, the hanger-receiver 32 inertially descends while slowing down. Then, after a preset time
U64 sends an exciting signal to the solenoid valve 45. Then, the air enters the lifting cylinder 28 from the air pipe 43, and the air in the lifting cylinder is discharged from the air pipe 44, so that the hanger receiver 32 is forcibly lowered, and then the adjusting rod 35 moves to the shock absorber 51. It hits and stops at a predetermined position (hereinafter referred to as a molding lowering stop position). Then, the CPU 64 controls the solenoid valve 45.
Stops the output of excitation signal to. In connection with this, the resin plate 1 suspended by the gripping tool 37 and heated is supplied to a predetermined position of the molding device 8. Next, the movable platen 79 moves forward (toward the mold 72) by the press cylinder 78, the mold 73 enters the inside of the mold 72 while pushing the resin plate 1, and the sandwiching plate 83 forms the resin plate together with the mold 72. Since 1 is sandwiched, the resin plate 1 is molded into a predetermined shape by both molds 72 and 73. Since the piston 82 slides on the cylinder 80 (retracts while pressing air) during this molding, the flange of the resin plate 1 can be prevented from coming off or being damaged. And
When the movable platen 79 reaches a predetermined position, the sensor 84 detects this and is taken into the CPU 64. Then the CPU
Since 64 outputs an excitation signal to the solenoid valve 85, the space 89
Is communicated with the vacuum tank 86 via the solenoid valve 85 and becomes a negative pressure. Then, the top surface of the molded product 88 is pulled up and bulges (h in FIG. 9), so that the waviness can be eliminated. After a predetermined time,
The movable cylinder 79 is retracted by the press cylinder 78 and returns to its original position. At this time, the sensor 84 is turned "OFF", so the excitation signal to the solenoid valve 85 is released. Further, the piston 82 holding the flange portion of the molded product 88 also advances by the air and slides to the original position.

Subsequently, the CPU 64 outputs an excitation signal to the solenoid valve 42, and performs the same work as the "rising stop step". Therefore, the hanger receiver 32 is stopped at a predetermined position on the upper end of the lifting cylinder 28. Further, since the CPU 64 outputs an excitation signal to the solenoid valve 63, the air is the air tube 5
6 enters the twin cylinder 53, and the air in the twin cylinder is discharged from the air pipe 55. In connection with this, the piston 54 contracts and returns to its original position, so that the shock absorber 5 also retracts and is released from the movement path of the frame 27, and the regulation of the movement of the frame 27 is released.

Next, when the CPU 64 outputs an excitation signal to the solenoid valve 48, the air moves from the air pipe 47 to the moving cylinder 1
9, the air in the moving cylinder is discharged from the air pipe 46, so that the elevating frame 3 is forcibly moved toward the right side (preheating furnace side) in a front view. After that, when the sensor 58 detects the elevating frame 3, the CPU 64 stops outputting the excitation signal to the solenoid valve 48. Then, the supply / exhaust to / from the moving cylinder 19 is also stopped and the forced movement of the elevating frame 3 is stopped, so that the elevating frame 3 inertially moves while decreasing its speed from the detection position. Then, after a preset time, the CPU 64 outputs the excitation signal to the solenoid valve 48 again. Then, the air is supplied to the moving cylinder 19 from the air pipe 47, and the air in the moving cylinder is changed to the air pipe 46.
As it is discharged from the above, the ascending / descending frame 3 is forcibly moved and hits the shock absorber 49 to stop at a predetermined position (hereinafter, referred to as a right movement stop step). Then, the CPU 64 stops outputting the excitation signal to the solenoid valve 48.

Subsequently, the CPU 64 outputs an excitation signal to the solenoid valve 45, and performs the same work as the above "descent stop step". In this case, since the molded product gripped by the gripping tool 37 is located in the space in front of the preheating furnace 6, the operator pushes the foot petal (not shown) to turn on the switch 13. Then, the CPU 64 that has input the gripper "open" information via the input interface 65 sends an excitation signal to the solenoid valve 42, so that air flows from the air pipe 40 to the air cylinder 2
7, the air in the air cylinder is discharged from the air pipe 41. In this connection, the piston 38 extends (lowers) to return to its original position and open the gripper 37,
The worker collects the molded product. Further, the CPU 64 outputs a display signal to the display tool 14 and displays the molding number “1” on the display tool 14. After that, when molding is subsequently performed, the number added by "1" is displayed.

Then, the second molding step is started.
The CPU 64 outputs an excitation signal to the solenoid valve 45, and performs the same work as the "rising stop step". In this case, the hanger receiver 32 is stopped at a predetermined position on the upper end of the lifting cylinder 28. Next, the CPU 64 outputs a forward rotation drive command signal to the forward / reverse rotation motor 22 for a predetermined time, performs the same work as the "preheating furnace lid opening step", and thereafter performs the same work. When the number of moldings set in advance by the number-of-molds setting tool 67 is reached, the number of moldings is displayed on the display tool 14, and the CPU 64 outputs a notification command signal to the notification lamp 69 to notify the completion of the molding operation. Therefore, the worker can easily know the end of the work. When the work is finished, the main switch 66 is turned off.

Since the lateral movement of the frame 27 can be stopped at a predetermined position or in the vicinity of the molding device 8, molding quality can be improved. Further, since the shock absorber 5 receives the frame 27 of the elevating frame 3, the shock at the time of stopping is alleviated, and the resin plate 1 does not come off the gripping tool 37 or become misaligned. . Also, the lifting frame 3
Since the shock absorber 5 is retracted from the movement path during the movement of No. 1, there is no hindrance to the movement work. And
The hanger-receiver 32 has a "lift stop process", a "descent stop process", a "molding descent stop process", and a "left movement stop process".
The shock absorbers 70, 71, 51, 50, 49 hit the shock absorbers at the time of stopping each process such as the "right movement stop process", but since the shock absorbers alleviate the shock,
It is possible to prevent the resin plate 1, molded products, etc. from falling off from the gripping tool 37 and from being misaligned. Further, since the adjusting rod 35 can be adjusted in the vertical direction by loosening / removing the screw 36,
The vertical position of the gripper 37 can be changed, and the adaptability to the size of the resin plate 1 can be improved. Furthermore, since it is forcibly moved again before reaching the stop position, it is easy to stop at the fixed position.

In this molding operation, when the sliding body 20 provided integrally with the moving device 9 deviates from the predetermined moving range in the front-rear direction, the sliding body 20 is stopped by the stop sensor 7.
Detected by 5. Then, this deviation information is sent to the CPU 6
4, the CPU 64 outputs a stop signal to the forward / reverse rotation motor 22 to stop the driving, so that the forward / reverse rotation motor 22 is stopped.
It is possible to prevent seizure and damage to the operating part.

Further, in the negative pressure treatment of the space 89, the bulge height h of the top surface of the molded product 88 can be selected by adjusting the excitation time of the solenoid valve 85.

[Brief description of drawings]

FIG. 1 is a front view of a resin plate molding apparatus.

FIG. 2 is a plan view of a partially lifted lifting frame.

FIG. 3 is a front view of the lifting frame, which is partially removed.

FIG. 4 is a side view of the lifting frame with a part cut off.

FIG. 5 is a front view of the resin plate molding apparatus in which the lifting frame is moved and partially cut away.

FIG. 6 is a right side view of the molding device.

FIG. 7 is a left side view of the molding device.

FIG. 8 is a right side cross-sectional view of a partially cut molding device.

FIG. 9 is a block circuit.

[Explanation of symbols]

 1 Resin plate 2 Hanger 3 Lifting frame

Claims (1)

[Claims] 1. A heating means, a molding means, and an elevating frame 3 having a hanger-2 for suspending the resin plate 1,
The hanger-2 is provided on the elevating frame 3 so as to be able to ascend and descend, and the elevating frame 3 is provided so as to be compulsorily movable by the compulsory moving means, and the resin plate 1 heated by the heating means is molded by the molding means. In the above, the lifting frame stopping device in the resin plate molding apparatus configured to stop the forcible movement by the forcibly moving means when the hoisting frame 3 is located outside the predetermined moving range.