JPH0217715Y2 - - Google Patents

Description

[Detailed description of the invention] This invention applies to processing machines (press machines, injection molding machines, die-casting machines, forging machines, machine tools, etc.)
Molds, etc. (molds, workpiece pallets, workpieces, etc.)
It belongs to the technical field of push-pull drive devices, and its basic configuration is that a roller device is installed on the upper surface of the cart to transfer molds, etc. in a direction perpendicular to the direction of movement of the cart, and A drive device is provided on one side of the cart, and a guide path is provided on the upper surface of the cart in a transverse shape parallel to the above-mentioned transfer direction, with its end facing the drive device, and the main body of the hook device is provided on the guide path. The leg portion of the drive device is configured to be able to move the drive chain forward and backward into the guide path through the sprocket using a drive means, and restrain the drive chain so as not to bend in the guide path. A processing machine in which the terminal end of the drive chain is connected to the leg, the proximal end of the hook is rotatably supported on the main body of the hook device, and a pushable hook is formed at the tip of the hook. It relates to a push/pull drive device for molds, etc.

As an example of a conventional device, FIGS. 6 and 7 show part of the drawings of ``Mold loading and unloading device for injection molding'' (Japanese Patent Laid-Open No. 55-67428). This device allows a moving cart 100 to run in front of the injection molding machine M,
A fixed frame 101 is provided between the movable trolley 100 and the injection molding machine M, and the mold 104 is moved to the movable trolley 1 by a hook 103 that is driven forward and backward by a chain 102.
00 to the injection molding machine M via the fixed frame 101
or vice versa.

Then, the hook 10 is attached to the handle 105 of the mold 104.
Cylinder 106 and operating arm 1 for holding and releasing 3
07 is provided at the rear end of the fixed frame 101, and the cylinder 106 connects the hook 103 via the operating arm 107.
The structure is such that the handle 105 can be connected to and removed from the handle 105 by remote control.

In the case of this device, the hook 103 can be held and removed by the cylinder 106 and the operating arm 107 on the rear end side of the fixed frame 101, but the
At the front end side, the hook 103 must be held in and removed by hand. To automate this, a cylinder 106 and an operating arm 10 are also installed on the front end side of the mobile cart 100.
It is necessary to add 7. In that case, the number of installed cylinders 106 and operating arms 107 increases, and the hydraulic pressure supply system and control system become complicated.

In view of the above drawbacks, the present invention is constructed as follows.

In the device having the above-mentioned basic configuration, the hook device of the hook device can be moved into a sideways engagement posture and a release posture by being swung upwards by a cylinder disposed below the hook device and facing in the same direction as the hook device. The drive chain has a U-shaped cross section spanning from one side edge of the drive chain to the other side edge, on the outer surface of the drive chain that does not mesh with the sprocket, over almost the entire length of the drive chain. A plurality of guides having a length corresponding to one unit length of the connecting plate and whose end surfaces are in contact with each other are attached, and a continuous tunnel-shaped guide along the drive chain is provided inside the guides. A conduit was formed, and a hose for supplying fluid pressure to the cylinder was introduced into the conduit.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 shows an injection molding machine M and its mold 1 being transported and
The push/pull drive device P to be replaced is shown. Push/pull drive device P
At least one pair of roller devices 3 for transferring the mold 1 in a direction orthogonal to the traveling direction of the self-propelled cart 2 is provided on the upper surface of the self-propelled cart 2, and a guide member 4 is installed approximately in the center between the roller devices 3. A drive device 5 is attached to the left side of the trolley 2 at a position facing the left end of the guide member 4, and the drive device 5 moves the hook device 6 along the guide path 7 of the guide member 4. By moving the pair of molds 1 forward and backward,
It is designed to be carried in and out between the movable platen (not shown) and fixed platen 9 of the injection molding machine M from above.

Next, a detailed explanation will be given with reference to FIGS. 2 to 5.

The drive device 5 feeds the drive chain 13 into or out of the guide path 7 via a sprocket 12 rotatably supported on a support block 11 that is driven up and down by a drive means 10. The hook device 6 is pushed and pulled to the right or left.

The driving means 10 includes an electric motor 14, a reduction gear 15,
screw shaft 16, guide rod 17, support block 11,
It consists of a square nut 18 and a coil spring 19, and the screw shaft 16 is connected to the upper and lower spring receivers 2 of the support block 11.
0, and the guide rod 17 is loosely inserted into the support block 1.
1, and the spring receiving portion 20 is slidably inserted into the spring receiving portion 20.
A square nut 18 is screwed onto the screw shaft 16 between the screw shafts 16 and restrained from rotating by the support block 11, and a compression coil spring 19 is mounted on the screw shaft 16 between each spring receiver 20 and the square nuts 18. There is.

By rotating the screw shaft 16, the square nut 18 is raised or lowered, and the support block 11 is raised or lowered via the coil spring 19. This buffer mechanism is for preventing damage to the screw when the hook device 6 suddenly stops.

The drive chain 13 has idlers 21 on both sides, and the outer surface of the drive chain 13 that does not mesh with the sprocket 12 has a U-shaped cross section that corresponds to one unit length of the connecting plate of the chain 13 over almost the entire length of the drive chain 13. The guides 22 having a length of 2 are attached so that the end surfaces of adjacent guides 22 are in contact with each other.

Due to the guide 22, the drive chain 13 becomes a chain that can be bent only toward the inner side, and the guide path 7
Inside, the idler ring 21 is restrained from both upper and lower sides by the guide wall surface 23 and can transmit compressive force.

Moreover, inside the casing 24 of the drive device 5,
A pair of guide tools 25 having a U-shaped cross section are attached to sandwich the sprocket 12, and the free end edges of the guide tools 25 press the idler wheels 21 of the drive chain 13 to prevent the drive chain 13 from bending outward. and connect the starting end of the drive chain to the casing with a fixture. Further, the direction switching guide section 26 of the drive device 5 is connected to a J-shaped guide surface 28 on the upper side of the guide block 27.
and a J-shaped curved portion of the guide tool 25, which restrains the idler ring 21 of the drive chain 13 and changes the direction of the drive chain 13.

However, the motor 14, reduction gear 15, screw shaft 16, etc. may be omitted, and the support block 11 may be driven up and down by a piston rod of an upright hydraulic or pneumatic cylinder.

Next, the hook device 6 is constructed as follows.
The leg portion 30 of the main body 29 is slidably inserted into the guide path 7, and the end portion of the drive chain 13 is connected to the leg portion 30. A proximal end of a hook 31 is rotatably supported near the left end of the upper part of the main body 29 via a support shaft 32, and a distal end of the hook 31 is connected to an engaging portion 33 on the mold 1 side. A hook 34 that can be engaged to push or pull the mold 1 is provided, and the hook tool 31 is moved by a hydraulic cylinder 35 to a sideways engagement position X.
and a release position Y which is swung upwards as shown by the imaginary line.

A hydraulic hose 36 for supplying and discharging hydraulic pressure to and from the hydraulic cylinder 35 is connected to a tunnel-shaped conduit 37 formed between the guide 22 and the drive chain 13.
The starting end of the hydraulic hose 36 is fixed to the guide block 27 and connected to a hydraulic pressure supply device (not shown).

In addition, a limit switch 38 is attached to the main body 29 of the hook device 6, and the posture of the hook 31 can be detected by the operating piece 39 of the hook 31 and the limit switch 38, and the cable 40 to the limit switch 38 is also connected to the guide path 37. Similarly to the hydraulic hose 36, it is connected to a control device (not shown) via a guide block 27.

Note that the drive device 5 does not necessarily need to be attached to one side of the truck 2, and may be attached to the floor surface 41 outside one side of the truck 2.

Further, instead of the elevating sprocket 17 of the drive device 5, a sprocket may be fixed at the position of the direction switching guide section 26, and the sprocket may be rotated by a driving means.

The push-pull drive device of the present invention is applicable not only to the mold 1 of the injection molding machine M, but also to the molds of press machines and die-casting machines, and for transporting work pallets and large workpieces used in other machine tools. Of course it is possible.

The effects of the present invention are as follows.

(1) The hook device, which is driven forward and backward by the drive device, is equipped with a cylinder, and the cylinder can be used to switch the hook between an engaged position and a released position.This set of cylinders is used to engage the mold on the trolley. The hook can be engaged and disengaged from the engagement section of the mold on the side of the injection molding machine and the injection molding machine. Therefore, the required number of cylinders is small, the mechanism is simple, the hydraulic pressure supply system and the control system are simplified, and it can be implemented easily and inexpensively.

(2) Furthermore, a guide path is formed on the outer surface of the drive chain by an attached guide over almost the entire length of the drive chain, and a hose for supplying fluid pressure to the cylinder is arranged in the guide path. There is no entanglement between the drive chain and the hose, and there is no interference between the hose and the trolley or drive device, allowing it to be maintained in an orderly manner, increasing the durability of the hose.

(3) The cylinder installed in the hook device is placed under the hook and facing in the same direction as the hook, which simplifies the connection structure between the hook and the cylinder, and prevents the cylinder from protruding too much to the side. Equipment becomes smaller.

(4) Since the end surfaces of adjacent guides of a plurality of guides with a U-shaped cross section are provided along almost the entire length of the drive chain and are in contact with each other, when pushing and driving all molds, etc., there is no need to use the guides. Since most of the pushing force can be transmitted through the drive chain, the buckling load conditions in the vertical and horizontal directions on the connecting plate of the drive chain are significantly alleviated, allowing the drive chain to be made smaller and lighter, and the drive means to be smaller. . Further, the operation during push driving becomes smooth.

(5) Since the plurality of guides described above form a continuous tunnel-like guide path along the drive chain,
The hose is hardly exposed to the outside, so that the hose can be sufficiently protected and guided, and it is also possible to prevent foreign matter from falling into the vicinity of the drive chain.

[Brief explanation of the drawing]

1 to 5 show embodiments of the present invention.
The figure is a partial longitudinal sectional front view of the push/pull drive device and injection molding machine, Figure 2 is a vertical sectional front view of the main part, Figure 3 is a sectional view taken along the - line in Figure 2, and Figure 4 is a sectional view taken along the - line in Figure 3. Figures 5 and 5 are cross-sectional views taken along the - line in Figure 2, Figures 6 and 7 show conventional equipment, Figure 6 is a plan view of an injection molding machine and its mold loading and unloading device, and Figure 7 is a FIG. 7 is a side view of the part shown in FIG. 6; 1... Mold etc., 2... Cart, 3... Roller device, 5... Drive device, 6... Hook device, 7...
Guide path, 10... Drive means, 13... Drive chain, 17... Sprocket, 22... Guide, 2
9...Main body, 30...Legs, 31...Hook tool,
X...Engaged attitude, Y...Release attitude, 34...Hook, 35...Cylinder, 36...Hose, 37...
...Leading path, 41...floor surface.

Claims (1)

[Claims for Utility Model Registration] A roller device 3 is provided on the upper surface of the truck 2 to transport the mold etc. 1 in a direction orthogonal to the traveling direction of the truck 2.
A driving device 5 is provided on one side and a floor surface 41 outside one side of the cart 2, and a guide path 7 is provided in a transverse manner on the upper surface of the cart 2 in parallel with the above-mentioned transfer direction, and the end portion thereof is The leg portion 30 of the main body 29 of the hook device 6 is inserted into the guide path 7 facing the drive device 5 so as to be able to move forward and backward. 7
The drive chain 13 is restrained so as not to bend in the guide path 7, and the terminal end of the drive chain 13 is connected to the leg 30, and a hook tool 31 is attached to the main body 29 of the hook device 6. In a push/pull drive device for a die or the like of a processing machine, the hook 34 of the hook device 6 is rotatably supported, and a push/pull hook 34 is formed at the tip of the hook 31. Hook 3
A cylinder 35 disposed on the lower side of the drive chain 13 facing in the same direction allows the cylinder 35 to switch between a sideways engagement position X and a release position Y that is swung upward. Then, drive chain 1
On the outer surface that does not mesh with the sprocket 17 of No. 3,
A plurality of guides 22 that have a U-shaped cross section extending from one side edge of the drive chain 13 to the other side edge and have a length corresponding to one unit length of the connecting plate of the drive chain 13 and that are adjacent to each other. A plurality of guides 22 are attached, the end surfaces of which are in contact with each other, and a tunnel-shaped continuous guide path 37 along the drive chain 13 is formed inside the guide 22, and the cylinder 35 is connected to the guide path 37.
A push/pull drive device for a mold, etc. of a processing machine, characterized in that a hose 36 is introduced for supplying fluid pressure to the mold.