JPH0723221Y2 - Mold setting device for injection molding machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a mold setting device of an injection molding machine,
Particularly, the present invention relates to a setting device for loading and fixing a die onto a die mounting board of a horizontal injection molding machine from the outside in a direction substantially parallel to and parallel to the board surface, and a setting device for positioning and fixing the loaded die. is there.

[Prior art]

In a horizontal injection molding machine, various devices are put into practical use as a mold setting device for loading the mold to the fixed plate and the movable plate from the outside in a direction substantially parallel to and parallel to the plate surface, positioning it on the plate surface, and fixing it. However, for example, Japanese Patent Publication Sho 56
No. -19251 gazette, which is a typical device thereof, has three sets of receiving guides mounted on the lower part of the plate surface of a fixed platen and a movable platen, respectively, at appropriate intervals in the transport direction, and for fixing two sets of molds. A clamp device is provided between the receiving guides, and a flat slide is mounted on the upper end of each receiving guide to movably support the lower end of the mold in the transport direction. There is described a mold setting device in which two sets of clamp devices are mounted, respectively, and further a pair of upper and lower present stoppers for receiving and positioning the respective molds are provided at the mold carrying-in forward end positions on the plate surface.

[Problems to be solved by the device]

Generally, in an injection molding machine, it is necessary to mold by using molds of various sizes, and the center of each mold must be accurately positioned at the center of the board surface. 4 sets of receiving guides and 4 sets of clamping devices
It is necessary to change the mounting position of the pair of stop stoppers, so that the receiving guide, the clamp device, and the stopper are usually detachably fixed to the board surface with bolts. And, for example, if each receiving guide is fixed with 2 bolts, each clamping device is fixed with 4 bolts, and each stopper is fixed with 2 bolts, a total of 26 bolts are used on each board surface, and various sizes are used. A large number of bolt holes are required to correspond to the mold. However, although a large number of bolt holes are provided in advance in a standardized predetermined arrangement pattern on the board surface, it is often impossible to utilize these bolt holes depending on the size of the mold.In that case, tapping is applied to the board surface. For example, 6 bolt holes for 3 sets of receiving guides must be formed.

Moreover, a total of 52 bolts must be attached and detached in order to change the positions of the receiving guide, the clamp device, and the stopper each time the size of the mold changes, which requires a great deal of labor and time and reduces the operating rate of the molding machine. Is inevitable.

In addition, in the case of a relatively small molding machine, since the board surface is small and the guide rods are inserted into the four corners of the board surface, the receiving guide and the clamp device are mounted in a very narrow space. , Since the separate receiving guide and clamping device require a large space as a whole,
There is often a lack of space in arranging these on the board surface, and it is often difficult to mount them. Furthermore, since the receiving guide and the clamp device are separate structures, the individual manufacturing cost becomes high, and the total manufacturing cost of the mold setting device becomes very expensive. In addition, the number of hydraulic hoses for supplying and discharging hydraulic pressure to and from the plurality of clamp devices is not only a hindrance, but also the possibility of hydraulic pressure leaking from the connection parts of the hydraulic hoses increases.

An object of the present invention is to provide a mold setting device for an injection molding machine that can be attached to and removed from a board surface with a small number of bolts, can be downsized, and can be manufactured at low cost. is there.

[Means for Solving the Problems]

According to a first aspect of the present invention, there is provided a mold setting device for an injection molding machine, wherein a mold is loaded between a pair of mold mounting boards of a horizontal injection molding machine from the outside in a direction substantially parallel to and parallel to the board surface and fixed to the board surface. In the device for doing so, an integrated solid main body member extending in the carrying direction is detachably fixed to the lower part of the plate surface of each mold mounting plate, and the mold is smoothly attached to the upper end of the main body member in the carrying direction. A transfer support mechanism for movably supporting is provided, a plurality of hydraulic clamp devices for fixing molds are incorporated in the main body member, and common communication for supplying and discharging hydraulic pressure to and from hydraulic cylinders of the plurality of hydraulic clamp devices. The oil passage is formed in the main body member.

A mold setting device of an injection molding machine according to a second aspect of the present invention is a mold setting device for positioning a mold, which has been carried in between a pair of mold mounting plates of a horizontal injection molding machine, from the outside in a direction substantially parallel to and parallel to the plate surface. In the device for fixing to the board surface, an integrated solid body member extending in the carrying direction is detachably fixed to the upper part of the board surface of each mold mounting board, and is attached to the central portion of the body member in the carrying direction. Incorporating a positioning device that engages the engagement pin in the engaging recess of the mold to position the mold in the conveyance direction, and incorporates a plurality of hydraulic clamp devices for fixing the mold in the main body member, A common communicating oil passage for supplying and discharging hydraulic pressure to and from the hydraulic cylinder of the hydraulic clamp device is formed in the main body member.

[Action]

In the mold setting device of the injection molding machine according to the first aspect, when the mold is loaded between the pair of mold mounting plates of the horizontal injection molding machine from the outside in a direction substantially parallel to the plate surface and substantially horizontal, The molds are carried between the mold mounting plates while being supported by the transfer supporting mechanisms of the main body members respectively provided under the plate surfaces of the pair of mold mounting plates so as to be smoothly movable in the transfer direction, and are placed at predetermined positions. After being positioned, it is fixed to the board surface by a clamp device. Here, the main body member is integrated, and since the main body member is incorporated with the transfer support mechanism and a plurality of hydraulic clamp devices, the main body member can be transferred only by fixing it to the board surface with a small number of bolts or the like. The support mechanism and the clamp device can be fixed to the board surface. Therefore, when the position of the mold setting device is changed according to the change of the size of the mold, it is possible to easily and efficiently attach / detach the mold setting device to / from the board surface. In this case, since it is possible to provide a spare bolt hole or the like in the main body member, it becomes easy to effectively utilize the existing bolt hole on the board surface.

Since the transfer supporting mechanism and the plurality of hydraulic clamp devices are not individually provided but are incorporated in the main body member, the mold setting device is downsized as a whole.

In addition, since the transport support mechanism and the plurality of hydraulic clamp devices are not individually provided but incorporated in the main body member, the number of parts of the mold setting device as a whole is significantly reduced.

Moreover, since a common communicating oil passage for supplying and discharging the hydraulic pressure to and from the hydraulic cylinders of the plurality of hydraulic clamp devices is formed in the main body member, it is sufficient to connect one hydraulic hose to the mold setting device. The number of hydraulic hoses is reduced and they are less likely to get in the way, the workability at the time of transferring the mold setting device is improved, and the possibility of hydraulic pressure leaking from the hydraulic hose connection portion is reduced.

In the mold setting device of the injection molding machine according to the second aspect, when the mold is carried in between the pair of mold mounting plates as described above, the positioning device positions the mold in the carrying direction. , It is fixed to the board surface with a clamp device.

Here, since the main body member is integrated and the positioning device and the plurality of hydraulic clamp devices are incorporated in the main body member, the mold setting device is attached to and detached from the plate surface as in the first aspect. Can be performed easily and efficiently, and it is easy to effectively use the existing bolt holes on the board by providing spare bolt holes etc. on the main body member, the mold setting device as a whole is small, and the number of parts is also large Decrease to.
With respect to the oil passages for the hydraulic cylinders of the plurality of hydraulic clamp devices, the same effect as in claim 1 can be obtained.

[Effect of device]

According to the mold setting device of the injection molding machine of the first aspect, as described above, the mold setting device can be easily and efficiently attached and detached, and the operating rate of the molding machine can be improved. It is easy to effectively use the existing bolt holes without making any bolt holes in it, and it is not possible to use the existing bolt holes and it is only necessary to provide a very small number of bolt holes when newly forming, the mold setting It can be applied to a relatively small molding machine without difficulty due to the miniaturization of the device.
The manufacturing cost can be significantly reduced due to the drastic reduction in the number of constituent parts, the number of hydraulic hoses is reduced and it is less likely to get in the way, and the workability at the time of moving the mold setting device is improved, the hydraulic hose connection part, etc. The effect of reducing the possibility of hydraulic pressure leak from

According to the mold setting device of the injection molding machine according to the second claim, as described above, like the first claim,
The mold setting device can be easily and efficiently attached to and detached from the board surface, and it is easy to make effective use of the existing bolt holes on the board surface by providing spare bolt holes in the main body member and so on. As a result, it becomes smaller and the number of parts is significantly reduced. With respect to the oil passages for the hydraulic cylinders of the plurality of hydraulic clamp devices, the same effect as in claim 1 can be obtained.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1 to FIG. 3, the fixed platen 1 and the movable platen 2 of the horizontal injection molding machine I are arranged parallel to each other in the front-rear direction, and the movable platen 2 is 4
An injection cylinder 6 and an injection nozzle 7 which are guided by a guide rod 3 of the book and movable in the front-rear direction by a hydraulic cylinder 4 and which are driven to move in the front-rear direction by a hydraulic cylinder 5 are disposed behind the stationary platen 1. , A hopper 8 to the injection cylinder 6 with a screw conveyor piston member
A synthetic resin material is further supplied, and the piston member is rotationally driven by the hydraulic motor 9 and is driven in the front-rear direction by a hydraulic cylinder (not shown).

In the molding machine I, the fixed mold 10a and the movable mold 1 are
0b and a pair of molds 10 are used, the fixed mold 10a is located at the center of the plate surface 1a of the fixed platen 1, and the movable mold 10b is formed on the movable platen 2a.
Molding is performed by the pair of molds 10 in a state where they are fixed to the center of the board surface 2a, respectively, but the molding machine I itself is a well-known one, and a detailed description thereof will be omitted.

A plurality of bolt holes 30 are formed on the plate surfaces 1a and 2a of the fixed plate 1 and the movable plate 2 in a standardized predetermined arrangement pattern.
A roller clamp unit 40 (corresponding to the mold setting device according to the first claim) is fixed to the lower part of the plate surface 1a of the fixed plate 1 and the lower part of the plate surface 2a of the movable plate 2 with four bolts 31, respectively. The upper surface of the fixed platen 1a and the movable platen 2a
Positioning / clamping units 41 (corresponding to the mold setting device according to the second aspect) are fixed to the upper part of 2a by four bolts 31, respectively. On the left side of the molding machine I, a transfer carriage 11 for loading and unloading the mold stands by, and a fixed plate 1 and a movable plate 2 are provided.
Intermediate transfer conveyors 12 are attached to the lower left end of each of them so as to project to the left, and the mold 10 is connected to the fixed platen 1 from the transfer carriage 11 via the intermediate transfer conveyor 12 by the mold transfer drive device 13 described later. It is carried into the mold loading / unloading position 14 between the movable plates 2 or vice versa.

The transfer carriage 11 has two sets of mold mounting portions 15A.1 on its upper surface.
It has 5B, and can set and support one set of molds 10 on each of the mold mounting parts 15A and 15B. The mold mounting parts 15A and 15B are erected at predetermined intervals in the left-right direction. A roller conveyor 17 composed of a plurality of rollers 16 rotatably supported via a shaft member is additionally provided, and the die 10 is placed on the roller conveyor 17 so as to be movable in the left-right direction. The carriage 11 is movable by self-propelled wheels 19 driven by a movement drive device 18 arranged on the lower side.

Each of the above intermediate transfer conveyors 12 includes a pair of front and rear support plates.
Two rollers 21 are rotatably mounted between 20 via a shaft member oriented in the front-rear direction, and the roller 21 is provided such that its conveying surface is at the same level as the conveying surface of the roller 16.

The mold transfer driving device 13 is provided from the left end of the intermediate transfer conveyor 12 to the left end of the mold transfer position 14 at a position slightly above the transfer surface of the intermediate transfer conveyor 12 on the fixed platen 1 side. 1st guide frame 22A and each mold placement part 1
A pair of second guide frames 22B, which are provided from the left end portion to the right end portion of the transport carriage 11 at a rear upper position of 5A and 15B and can be continuously adjacent to the first guide frame 22A, and each guide frame 22A. A drive strip 23 made of windable steel that is pushed and pulled in the left and right directions in a guide groove (not shown) formed in 22B, and a drive strip 23 provided near the left end of the guide frame 22B. The push-pull drive device 24 is driven forward and backward with respect to the groove, and the push-pull tool 25 connected to the right end portion of the drive strip 23 and configured to be attracted to the mold 10 by the electromagnet is fixed by the push-pull tool 25. The push-pull driving device (24) is driven in a state where the lower end portion of the side mold (10a) is sucked, and the mold (10) is pushed and pulled between the carriage 11 and the mold loading / unloading position (14).

Next, the roller clamp unit 40 provided below the plate surface 1a of the fixed platen 1 and below the plate surface 2a of the movable platen 2 will be described, but since both are the same, the roller clamp unit 40 on the fixed platen 1 side is described. Will be described.

As shown in FIGS. 2 to 4, a rectangular parallelepiped block-shaped main body member 51 elongated in the left-right direction is horizontally arranged below the board surface 1a of the fixed board 1 so as to fit between the left and right guide rods 3. , The body member 51 is fixed to the board surface 1a by inserting bolts 31 into bolt insertion holes 32 formed in the lower part of the vicinity of both ends of the body member 51. Five sets of idler rollers 52 are mounted at intervals, and a clamp device 53 is incorporated in each of the left part and the right part of the main body member 51. In addition, the above five sets of idle rollers 52 are
Conveyance support mechanism that supports smoothly moving in the conveyance direction
It is equivalent to 52A.

As for each idler roller 52, as shown in FIG. 5, a roller accommodating portion 54 is formed at an upper end portion of the main body member 51 on the board surface 1a side, and a front-rear direction is formed at a substantially central portion of a front end of the accommodating portion 54. A support shaft 55 is attached to the mounting hole 54a in the facing direction so as to be cantilevered at its front end and non-rotatably via a pin member 56.
A roller 57 is rotatably provided in the middle of the shaft via a pair of front and rear bearings 58, and a rear portion of the support shaft 55 extends to the vicinity of the board surface 1a and a rear end portion thereof has a collar portion 55a for preventing the roller 57 from falling off.
Are integrally formed, the transport surface of the roller 57 is slightly above the upper end surface of the main body member 51 and at the same level as the transport surface of the intermediate transport conveyor 12, and the mold 10 is formed on the outer peripheral portion thereof. The lower end surface of the flange portion 10c is brought into contact with the upper end portion of the roller 57 to be conveyed.

As shown in FIG. 6, each of the clamp devices 53 has a mold 10
Clamp lever 59 for pressing and fixing
And a return mechanism 66 for returning the clamp lever 59 to the rest position shown by the solid line in the figure. The clamp lever 59 is substantially T-shaped and is disposed inside the accommodating portion 61 at the upper portion of the main body member 51, and is pivotally attached to the main body member 51 at a fulcrum portion 59a thereof via a horizontal support shaft 62, The force point portion 59b of the clamp lever 59 contacts the upper end surface of the piston member 60B, and the clamp lever 59 moves to the clamp cylinder.
When it is swung upward by 60 and switched to the clamp position shown by the chain line, the flange portion 10c of the die 10 is pressed and fixed to the board surface 1a by the action point portion 59c, and the clamp lever 59 is returned to the rest position by the return mechanism 66. Then, the clamp lever 59 retracts into the accommodating portion 61.

Regarding the clamp cylinder 60, a cylinder hole 60A is vertically formed in the lower half portion of the front part of the main body member 51, and a piston member 60B is mounted in the cylinder hole 60A so as to be slidable in an oil-tight manner. A long and slender elongated hole 63 is formed in the vertical direction in one half of the half portion, and both end portions of the elongated hole 63 are fitted with retaining pins 64 fixed to the body member 51.
The stopper pin 64 is retained in the cylinder hole 60A so as to be vertically movable for a predetermined distance. As described above, since the stroke of the piston member 60B is restricted by the long hole 63 and the retaining pin 64, the structure of the cylinder hole 60A and the piston member 60B can be simplified. Piston member 60B of each clamp device 53
The hydraulic oil chamber 65 formed on the lower side of the main body member 51 communicates with an oil passage 60a formed in the lower portion of the main body member 51 in the left-right direction, and is connected to a hydraulic pressure supply device via a hydraulic hose at the end of the main body member 51. It is connected.

Regarding the return mechanism 66, the spring accommodating hole 66a is formed in the main body member 51.
Is formed on the rear side of the cylinder hole 60A and in the vertical direction parallel to the cylinder hole 60A, the compressed return spring 66c is inserted into the spring accommodating hole 66a, and the rod 66d screwed with the nut 66b at the lower end is the return spring 66c. The spring receiving portion 66e has an upper end protruding from the spring receiving portion 66e, and the upper end and a middle portion of the clamp lever 59 are connected by a link 66f. During clamping, the rod 66d moves upward, and the nut 66b compresses the return spring 66c.When releasing the clamp, the rod 66d retracts downward due to the strong spring force of the return spring 66c, and the clamp lever 59 moves to the rest position. return.

In the clamp device 53, when the clamp is released, the clamp lever 59 retreats to the rest position and does not project to the outside of the upper end of the main body member 51, so that it does not interfere with the conveyed mold 10.

Next, a description will be given of the positioning / clamping unit 41 provided above the board surface 1a of the fixed board 1 and above the board surface 2a of the movable board 2, but since both are the same, the positioning / clamping unit 41 on the fixed board 1 side is described. Will be described.

As shown in FIGS. 2 and 3, a rectangular parallelepiped block-shaped main body member 51A elongated in the left-right direction is provided on the upper surface of the board surface 1a of the fixed board 1.
Are horizontally arranged so as to fit between the left and right guide rods 3, and the main body member 51A is fixed to the board surface 1a by inserting the bolts 31 into the bolt insertion holes 32 formed in the upper part near both ends thereof. A positioning device 70 for centering the die 10 on the board surfaces 1a and 2a is provided in the substantially central portion of the main body member 51A in the left-right direction, and a clamping device for the roller clamp unit 40 is provided in the left and right portions of the main body member 51. Clamping device similar to 53
Each 53 is built upside down.

Regarding the positioning device 70, as shown in FIGS. 7 and 8, an engaging recess 71 is formed in the upper center of the collar portion 10c of the fixed mold 10a, and the center portion of the main body member 51A is formed. An up-down-direction pin accommodating portion 72 is formed on the main body member 51A, and an up-down-direction air cylinder 73 is vertically installed and fixed to a substantially central portion of the upper surface of the main body member 51A. Engaging pin mounted in the part 72 so as to be movable in the vertical direction
It is screwed to 74, and the air cylinder 73 is attached to the lower end of the engaging pin 74.
Is driven to project downward from the main body member 51A and the engaging recess 71
An engaging pin portion 74a that is engaged with the engaging pin portion 74a is formed, and when the fixed die 10a when the die 10 is carried in passes below the engaging pin 74, the air cylinder 73 is driven to engage the engaging pin portion 74a. By bringing the mold 10 into contact with the lower end portion of the mold 10 against the upper surface of the collar portion 10c, as shown by the phantom line in FIG.
Engage with the engaging recess 71 to center the die 10 on the board surface 1a in the carrying direction.

The operation of the roller / clamp unit 40 and the positioning / clamp unit 41 will be described.

When replacing the mold 10 of the injection molding machine I, the carrier 11
The mold 10 to be mounted on the molding machine I is mounted on one of the mold mounting parts 15B, and the carrier 11 is mounted on the left side of the molding machine I while the other mold mounting part 15A is empty. The empty mold placement part 15A is made to stand by at the stop position, and the empty mold placement part 15A is made to correspond to the left side of the mold loading / unloading position 14 between the fixed platen 1 and the movable platen 2, and the first guide frame 22A and the second guide frame 22B. The ends of and are brought close to each other to be continuous.

On the other hand, in the molding machine I, the movable platen 2 is moved toward the fixed platen 1 to combine the fixed side mold 10a and the movable side mold 10b, and the two are connected by a connecting member (not shown). Next, with respect to the fixed platen 1 and the movable platen 2, the engaging pin 74 of the positioning device 70 of the positioning / clamp unit 41 is lifted to move the engaging pin portion 74.
a is removed from the engaging recess 71, the positioning / clamping unit 41 of the fixed platen 1 and the clamp device 53 of the roller / clamp unit 40 are released, and then the movable platen 2 is moved forward by a few mm to be fixed to the mold 10. Make a gap between the boards 1, then move the board 2
After releasing the clamp device 53 of the positioning / clamp unit 41, the movable platen 2 is moved forward by about 10 mm to make a gap between the die 10 and the movable platen 2, and then the push / pull drive device 24 is driven. The push-pull tool 25 is moved to the fixed platen 1 and the fixed side mold 10
The mold 10 is pulled to the left in a state of being attracted to the left end surface of the flange 10c of a, and the mold 10 is emptied by the idle roller 52, the intermediate transfer conveyor 12 and the roller conveyor 17 of the transfer carriage 11. It is conveyed to the mold placing portion 15A.

Next, in order to carry another mold 10 provided on the carriage 11 to the molding machine I, the mold for removing and replacing the roller / clamp unit 40 and the positioning / clamp unit 41 from the fixed plate 1 and the movable plate 2 4 at each predetermined position according to the size of 10
Install with a bolt of books. It should be noted that it is not necessary to change each unit 40/41 when exchanging the units of the same size. Next, the carrier vehicle 11 is moved backward so that the mold 10 corresponds to the left of the mold loading / unloading position 14 between the fixed platen 1 and the movable platen 2,
The first guide frame 22A and the second guide frame 22B are continuous. Next, the push / pull driving device 24 is driven to push the mold 10 to the right, and the mold 10 is conveyed through the roller conveyor 17, the intermediate transfer conveyor 12 and the idler roller 52, and then the mold 10 Each positioning device when the right end of the
The air cylinder 73 of 70 is driven to bring the lower end surface of the engaging pin portion 74a into contact with the upper end surface of the collar portion 10c.
Is conveyed to engage the locking pin portion 74a with the engagement concave portion 71 to accurately position the die 10 on the board surfaces 1a and 2a, and then the push-pull drive device 24 is rotated in the opposite direction to the push-pull tool. 25 is returned to the origin position at the left end of the second guide frame 22B. Next, the movable platen 2 is moved toward the fixed platen 1 by about 10 mm to bring the fixed platen 1 and the movable platen 2 into contact with the mold 10, and the roller / clamp unit 40 for the fixed platen 1 and the movable platen 2 is contacted. Then, the clamping device 53 of the positioning / clamping unit 41 is operated to fix the fixed side mold 10a to the fixed platen 1 and the movable side mold 10b to the movable platen 2, respectively, and then to the fixed side mold 10a and the movable side mold. When the connecting member that connects the mold 10b is removed, injection molding is possible.

As described above, the five idle rollers 52 and the pair of clamp devices 53 are integrally incorporated into the main body member 51 to configure the roller clamp unit 40, and the positioning device 70 and the pair of clamp devices 53 are provided. Since the positioning / clamping unit 41 is constructed by being integrally incorporated into the main body member 51A, the idler roller 52 and the clamping device 53 or the clamping device 53 and the positioning device as in the case of mounting the positioning / clamping unit 41 on the board surfaces 1a and 2a separately. 70 can be installed without difficulty even on a relatively small molding machine I without interfering with each other, and moreover, the roller / clamp unit 40 and the positioning / clamp unit 41 can be mounted on the board surface 1a ・ 2a with four bolts 31. Since it is attached to the board surface, it can be easily attached and detached from the board surfaces 1a and 2a, and it is easy to change the mounting position of the clamp device 53, idle roller 52, and positioning device 70 by changing the size of the mold 10. And it can improve the utilization rate of the molding machine I.

Here, the clamp device 53 may be replaced with the following various configurations. Each roller / lamp unit 40
Also, since the same units are incorporated in the respective positioning and clamp units 41, only the roller / clamp unit 40 attached to the lower part of the fixed platen 1 will be described.

As shown in FIG. 9, the clamp device 10 according to the first modified example.
0 is incorporated in the right part and the left part of the main body member 51, respectively, and a piston member 102 is oil-tightly slidably mounted in a cylinder hole 101 in the vertical direction thereof. A double-acting hydraulic cylinder 105 having a first hydraulic oil chamber 103 and a second hydraulic oil chamber 104 is configured, and a strong assisting spring 106 that constantly biases the piston member 102 upward is provided in the first hydraulic oil chamber 103. The housing portion 10 above the piston member 102
A substantially T-shaped clamp lever 108 is rotatably supported in the fulcrum 108a of the clamp lever 108 via a support shaft 109. The clamp lever 108 includes a ring member 110, a return spring 111, and a rod member 1.
A return mechanism 113 composed of 12 parts or the like can be held at the rest position shown by the solid line. In the clamp device 100, when pressure oil is supplied to the first hydraulic oil chamber 103, the piston member 102 is driven upward, and the force point portion 108b of the clamp lever 108 is pushed upward by the upper end surface of the piston member 102, so that the virtual As shown by the line, the clamp lever 108 is
When the collar 10c of the fixed side mold 10a is clamped by the action point portion 108c by rotating upward around 09 and the pressure oil is supplied to the second hydraulic oil chamber 104, the biasing force of the assisting spring 106 is resisted. The piston member 102 is driven downward by the return mechanism 113, and the clamp lever 108 returns to the rest position. In addition, this clamp device 1
At 00, the assisting spring 106 maintains an appropriate clamping force even when the supply of pressure oil to the first hydraulic oil chamber 103 is reduced during clamp driving.

Further, a common communicating oil passage for supplying and discharging hydraulic pressure to and from the two sets of the clamp devices 100 (oil passages for the two first hydraulic oil chambers 103,
Two oil passages for the second hydraulic oil chamber 104) are formed in the main body member 51, as in the above embodiment.

As shown in FIGS. 10 to 12, with respect to the clamp device 141 according to the second modification, the clamp device 141 is mounted in the accommodating portions 140 formed in the left and right parts of the main body member 51, and the clamp device 141 is clamped. The lever 142 is rotatably supported by the main body member 51 at a fulcrum portion 142a thereof via a support shaft 143 oriented in the left-right direction, and a double-acting hydraulic cylinder 144 oriented in the front-rear direction is incorporated in the lower portion of the main body member 51. , The front end portion of the piston rod 144a is a force point portion 142 formed at the lower end portion of the clamp lever 142.
The contact between the rod 144a and the force point portion 142b and the hook member 144
An assisting mechanism 147 including an assisting spring 145 and a pressing pin 146 is incorporated on the side of the hydraulic cylinder 144 of the main body member 51 so as to be swingably connected through the engagement of b and the pin 142d. In the clamp device 141, when pressure oil is supplied to the first hydraulic oil chamber 148, the piston rod 144a is driven forward and the force point portion 142b is pressed by the front end surface thereof, as shown by the chain line in FIG. Then, the clamp lever 142 rotates around the fulcrum portion 142a, and the flange portion 10c of the fixed side mold 10a is clamped by the action point portion 142c formed at the upper end portion thereof, and the pressure oil is supplied to the second hydraulic oil chamber 149. Is supplied, the piston rod 144a retracts, the hook member 144b engages with the pin 142d, and the clamp lever 142 is rotated to be in the unclamped state shown by the solid line. The clamp lever 142 is constantly pressed by the assisting mechanism 147 toward the clamp side,
Even if the supply of pressure oil to the first hydraulic oil chamber 148 is reduced, an appropriate clamping force can be maintained.

In addition, a common communicating oil passage for supplying and discharging hydraulic pressure to and from the two sets of double-acting hydraulic cylinders 144 (oil passage for the two first hydraulic oil chambers 148 and two hydraulic fluid chambers 149 for the second hydraulic oil chamber 149). An oil passage) is formed in the main body member 51 as in the above embodiment.

As shown in FIG. 13, a clamp device 15 according to the third modification.
Regarding 2, the main body member 51 is formed at the upper front end thereof with a protruding portion 150 protruding from the left end portion thereof to the right end portion thereof and above the flange portion. The single-acting hydraulic cylinder 151 is incorporated, the main body member 51 and the hydraulic cylinder 151 constitute a clamp device 152, and when pressure oil is supplied to the hydraulic oil chamber 153 of the hydraulic cylinder 151, the piston rod 151a moves toward the board surface as indicated by the chain line. When the flange 10c of the fixed side mold 10a is clamped at the front end surface by projecting to the 1a side and the pressure oil is removed, the piston rod 151a retracts with the spring member 154, which is a compression coil spring built into the hydraulic cylinder 151. Then, the unclamped state shown by the solid line is obtained.

Further, a common communicating oil passage for supplying and discharging hydraulic pressure to and from the two sets of single-acting hydraulic cylinders 151 is formed in the main body member 51, as in the above-described embodiment.

As shown in FIG. 14, the clamp device 16 according to the fourth modification example.
2, the single-acting hydraulic cylinder 160 oriented in the front-rear direction is incorporated in the left and right parts of the main body member 51.
Piston rod 160a penetrates through the main body member 51 and the fixed plate 1
The main body member 51 and the fixed platen 1 are screwed to each other and a predetermined gap 16
1 is formed, a nut portion 160b is integrally formed in the middle of the piston rod 160a desired in the gap 161, and the main body member
51 and the hydraulic cylinder 160 constitute a clamp device 162,
When pressure oil is supplied to the hydraulic oil chamber 163, as shown by the chain line,
The body member 51 is pulled toward the board surface 1a side and the board surface of the body member 51
When the collar portion 10c of the fixed side mold 10a is clamped by the action point portion 164 formed at the upper end of the 1a side, and when the supply of pressure oil is interrupted, the spring member 165 formed of a compression coil spring built in the hydraulic cylinder 160 is used. The main body member 51 is pressed forward and enters the unclamped state shown by the solid line. In addition, a common communicating oil passage for supplying and discharging hydraulic pressure to and from the two hydraulic cylinders 160 is
It is formed in the main body member 51 as in the above-described embodiment.
The roller clamp unit 40 incorporating the clamp device 162 is attached to the fixed platen 1 via the piston rod 160a, and the bolt insertion hole 34 is unnecessary.

Next, a modified example of the body members 51 and 51A will be described. In addition, here, a main body member provided below the fixed platen 1
51 will be described.

As shown in FIG. 15 and FIG. 16, the main body member 51 is composed of a pair of left and right split members 170, and both split members 170 are integrally connected via a pair of upper and lower pin members 171a and 171b, The lower pin member 171a is formed in a hollow pipe shape and is oil-tightly attached to the main body member 51 via a seal ring 172, and the pin member 171a communicates with the oil passages 60a of the left and right clamp devices 53. . In this case, the relatively compact dividing member 17
Since the body member 51 can be configured with 0, the cylinder hole 60A / oil passage
It becomes easy to process the body member 51 such as 60a.

It should be noted that a large number of spare bolt insertion holes 34 for attaching the roller / clamp unit 40 and the positioning / clamp unit 41 to the surfaces 1a and 2a may be provided in the main body member 51. In this case, the existing bolt hole 30 is more effective. It can be utilized.

Further, the bolt insertion hole 34 may be a long hole extending in the left-right direction, in which case the same effect as described above can be obtained.

[Brief description of drawings]

The drawings relate to an embodiment of the present invention. FIG. 1 is a plan view of an injection molding machine and a carrier, FIG. 2 is a front view of the same, and FIG.
Fig. 2 is a sectional view taken along line III-III in Fig. 2, Fig. 4 is a vertical sectional front view of a roller clamp unit attached to a fixed platen, Fig. 5 is a sectional view taken along line VV in Fig. 4, and Fig. 6 is shown in Fig. 6. 4 Figure VI-VI line sectional view, Figure 7 is a vertical sectional front view of the positioning clamp unit attached to the fixed platen, Figure 8 is a sectional view taken along line VIII-VIII of Figure 7, and Figures 9 to 14 are clamps. FIG. 9 relates to a modified example of the device, and FIG. 9 is a view corresponding to FIG. 6 of the clamp device according to the first modified example, and FIG. 10 is a front view of a roller clamp unit incorporating the clamp device according to the second modified example. FIG. 11 is a diagram corresponding to FIG. 6 of the clamp device according to the second modification, and FIG.
FIG. 13 is a sectional view taken along the line XII-XII in FIG. 13, which corresponds to FIG. 6 of the clamp device according to the third modification, and FIG. 14 corresponds to FIG. 6 of the clamp device according to the fourth modification, and FIG. FIG. 16 relates to a modified example of the main body member, FIG. 15 is a view corresponding to FIG. 4 of the main body member according to the modified example, and FIG. 16 is a longitudinal sectional front view of the main part near the pin member. I ... Injection molding machine, 1 ... Fixed board, 2 ... Movable board, 1a, 2
a …… Board surface, 10 …… Mold, 10a …… Fixed side mold, 10b ……
Movable mold, 40 …… Roller clamp unit, 41 ……
Positioning / clamp unit, 30 …… Bolt hole, 31 ……
Bolts, 51,51A …… Main body member, 52 …… Idler rollers, 52A
…… Transport support mechanism, 53,100,141,152,162 …… Clamp device, 60,105,144,151,160 …… Hydraulic cylinder, 60a …… Oil passage, 70 …… Positioning device, 71 …… Engagement recess, 74 …… Engagement pin.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-56-157334 (JP, A) JP-A-58-201624 (JP, A) JP-A-62-56263 (JP, A) Actual development Sho-58- 155214 (JP, U) Actually open 2-48309 (JP, U) Actually open 59-39031 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A device for loading a mold between a pair of mold mounting plates of a horizontal injection molding machine from the outside in a direction substantially parallel to and parallel to the plate surface and fixing the mold to the plate surface. An integrally solid main body member extending in the transport direction is detachably fixed to the lower part of the board surface of the plate, and a transport support mechanism is provided at the upper end of the main body member to support the mold so as to be smoothly movable in the transport direction, A plurality of hydraulic clamp devices for fixing molds are incorporated in the main body member, and a common communicating oil passage for supplying and discharging hydraulic pressure to and from hydraulic cylinders of the plurality of hydraulic clamp devices is formed in the main body member. A mold setting device for injection molding machines. 2. An apparatus for positioning a mold, which is carried in between a pair of mold mounting plates of a horizontal injection molding machine, from the outside in a direction substantially parallel to and parallel to the plate surface and fixing the mold to the plate surface. An integral solid main body member extending in the carrying direction is detachably fixed to the upper part of the plate surface of each mold mounting plate, and an engaging pin is provided in the engaging concave portion of the mold in the substantially central part of the main body member in the carrying direction. A positioning device for engaging and positioning the mold in the conveying direction is installed, a plurality of hydraulic clamp devices for fixing the mold is installed in the main body member, and hydraulic pressure is supplied to and discharged from the hydraulic cylinders of the plurality of hydraulic clamp devices. A mold setting device for an injection molding machine, characterized in that a common communicating oil passage is formed in the main body member.