JPS6146210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold exchange device for timely exchanging each mold of a plurality of press machines with various molds stored in a mold storage shelf.

In press factories equipped with multiple press machines, a mold storage shelf that can accommodate multiple molds three-dimensionally has traditionally been installed on one side of the press group, and the molds removed from the press machines can be transferred. The trolley automatically transports the mold to the designated storage space of the mold storage shelf, and
Predetermined replacement molds are transported from the storage space to each press machine as instructed, saving labor when replacing molds.

However, it takes time for the transfer cart to load molds and move back and forth between the press machine and the mold storage shelf, so when the molds of several press machines need to be replaced at the same time, the work time may be long and the work time may be long. It had the disadvantage of becoming less efficient.

The purpose of the present invention is to eliminate the above-mentioned drawbacks and improve work efficiency by making it possible to change molds at the same time even in multiple press machines. A mold exchange conveyor is provided for horizontally transporting the molds from one position to another, or horizontally transporting the molds to a preset position, and a rail is laid transversely in front of the three-dimensional mold storage shelf, and a transfer trolley that reciprocates on the rails is installed. A mold carrying basket corresponding to each mold storage space of the mold storage shelf is provided so as to be movable up and down, so that molds can be put in and taken out freely, and on one side of the mold exchange conveyor, a mold carrying cage is provided that can be removed from the press machine. A mold standby section that supports the mold that has been placed and delivers it to the mold loading basket, and a mold waiting section that delivers the mold to be set in the press machine from the mold loading basket are arranged so that they each operate independently. This is a mold changing device that is equipped with a mold changing device.

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

Figure 1 shows the overall layout of the equipment in the factory. In the figure, 1, 1... are multiple press machines arranged in a row, and 2 is the various replacement molds used in the press machines. This is a storage shelf that can be stored three-dimensionally. In front of the mold storage shelf 2, rails 3, 3 are laid transversely, and a transfer cart 4 reciprocates on the rails.
5, 5... is an operation panel provided for each press machine,
Reference numeral 6 denotes a control panel that gives overall commands to each operation panel, the transfer trolley 4, etc. As shown in FIG. 2, the transfer truck 4 is equipped with four wheels 7 that roll on rails 3, 3, and two masts 8, 8 on the upper surface.
Four guide wheels 10 are rotatably mounted on the upper surface of a horizontal beam 9 that is vertically established and connects the upper ends of the masts 8, 8.
has been established. Then, the guide wheels 10 are clamped from both sides to the ceiling rails 11 arranged on the front extending portion of the upper edge of the mold storage shelf 2 so as to be parallel to the rails 3, 3, thereby stably holding the masts 8, 8. It is supported vertically. By rotationally driving the motor 12 mounted on the transfer trolley 4, the wheels 7 are rotationally driven via a transmission part such as a chain.
can be stopped at any commanded position in front of the mold storage shelf 2. A mold loading cage 13 is provided on the masts 8, 8 so as to be movable up and down so as to match the height level of each mold storage space. That is, both side plates 1 of the mold loading basket 13
Three guide wheels 16 are provided on the upper and lower edges of the outer surfaces of the masts 8 and 14 to clamp vertical rails 15 fixed to the opposing inner surfaces of the masts 8 and 8, respectively. A winding drum 18 is supported so that it can move up and down along the masts 8, 8, and is rotated by a motor on a pedestal 17 fixed to one side of the mast 8. Wires 21 and 22, one end of which is tied to the upper cross beam of the mold carrying cage 13, are hung from pulleys 19 and 20 which are freely supported, and the other wires 21 and 22 are wound around the winding drum 18. By doing so, the mold carrying cage 13 is connected to the wire 2.
1 and 22, and by controlling the rotation of the winding drum 18, the mold loading basket 13 can be stopped at any commanded height that matches each mold storage space of the mold storage shelf. Four lifting cylinders 23 are vertically provided at intervals on the mold carrying cage 13, and a mounting plate 24 is supported horizontally on the upper end of the piston shaft of each cylinder 23, so that the cylinders 23 can be operated. The mounting plate 24 should be able to move up and down slightly. 25
indicates a guide tube that guides a vertical shaft 26 fixed to the lower surface of the mounting plate 24 so that the mounting plate 24 moves up and down vertically. On the mounting plate 24, guide pieces 28, 28 that support the planar claw mounting frame 27 in a horizontally slidable manner are fixed.
A cylinder 29 for loading and unloading is horizontally fixed on the lower surface of the cylinder 29, and the tip of the piston shaft of the cylinder 29 is fixed to the pawl mounting frame 27. Engagement claws 30 and 31 are provided protruding from the upper surface of both ends of the claw attachment frame 27, respectively. 32,
32 is a mold mounting cage 1 for slidably supporting the mold.
3, and stop plates 33, 33 are provided on the outside thereof to prevent the mold from falling off from the top of the support pieces. When the lifting cylinder 23 is operated to move the mounting plate 24 up and down, the engaging claws 30 and 31 are configured to retract and appear higher than the height level of the support piece 32. In addition, each mold storage space of the mold storage shelf 2 is provided with a rail-shaped receiving bar 34 so as to protrude from both opposing sides, and the supporting piece 32 is placed on the mold so that it is on the same level as the receiving bar 34. The loading basket 13 moves up and down. Then, by operating the lifting cylinder 23, the engaging claws 30 and 31 are projected, and by operating the loading/unloading cylinder 29, the claw mounting frame 27 is advanced into the mold storage space, and the mold is slid onto the receiving frame 34. ,
After that, the lifting cylinder 23 is operated to lower the engaging claws 30 and 31, and the loading/unloading cylinder is operated in the opposite direction to return the claw mounting frame 27 to its original position.
The mold supported on 2 can be moved to the mold storage space. On the other hand, when taking out a mold stored in the mold storage space, the claw mounting frame 27 is advanced to the lower side of the mold, and the engaging claw 3
The mold can be transferred onto the support piece 32 by contracting the pawl mounting frame 27 with the claws 0 and 31 protruding so as to be able to engage with the mold. The above-described configuration in which predetermined molds can be taken in and out of the mold storage shelf is generally the same as the configuration adopted in conventional mold changing devices or various automatic warehouses.

Next, the mold changing conveyor 35 attached to each press machine 1 will be explained. The conveyor 35 has two rail plates 36, 36 installed parallel to each other on both sides of the pedestal, a guide rail 37 with a U-shaped cross section installed horizontally and vertically at the center of the pedestal, and one end of the guide rail 37. is extended from the back of the press machine 1 to near the setting position of the mold, and an endless chain 40 is wound around sprockets 38 and 39 that are pivotally supported at both ends of the guide rail, and the endless chain 40 is slid on the guide rail 37. The endless chain 40 is fastened 42 to a movable body 41 freely arranged. The moving body 41 includes rollers 44 rolling on a rail member 43 fixed to the upper surface of the guide rail 37;
44 and four rollers 46 for clamping a rail member 45 fixed to the lower surface of the guide rail 37 so that it can reciprocate on the guide rail 37 by being pulled by the endless chain 40. 47 indicates a motor that rotates the endless chain 40;
It is connected via a conduction chain 49 to a sprocket 48 fixed to the shaft of the sprocket 39 at one end. A conical protrusion 51 is protruded from the upper surface of the extension portion 50 of the moving body 41, and the protrusion 51 is inserted into an engagement hole drilled in the lower surface of the lower mold part of the mold set in the press machine 1. so that it can be kept engaged at all times. Therefore, when the movable body 41 moves along the guide rail 37 due to the circular motion of the endless chain 40, the mold engaged with the protrusion 51 slides on the rail plates 36, 36, and the mold is moved into the press machine. It can be carried out horizontally from the first set position, or it can be carried into the fixed set position. In addition, lifting cylinders 52, 52 are vertically installed on both sides of the guide rail 37, and the upper ends of the piston shafts of the cylinders are connected to a pair of mounting plates 53, 53, which are rectangular in plan.
The mounting plates 53, 53 are fixed to each other by the operation of the cylinder.
is made to move in and out higher than the mold mounting surfaces of the rail plates 36, 36. 54 is a guide tube that guides a vertical shaft 55 that is vertically installed on the lower surface of the mounting plate 53 so that the mounting plates 53, 53 move up and down vertically; 56 is a mold guide fixed on the mounting plates 53, 53; Showing the weir plate for use.

Thus, a mold standby section 57 and a mold standby section 58 are arranged side by side on one side of the mold exchange conveyor 35.

The mold standby section 57 has rail plates 59, 59 on both sides of the pedestal in a direction perpendicular to the rail plates 36, 36.
is provided slightly higher than the height level of the rail plates 36, 36. 60 is a pushing cylinder fixed horizontally on one side of the mold exchange conveyor 35 corresponding to the opposite side of this mold standby section 57, 61 is a piece attached to the tip of the piston shaft of the cylinder, and 62 is the corresponding cylinder. It is a horizontal shaft whose one end is fixed to a piece and is supported by a guide cylinder 63 in parallel with the cylinder 60. When the plates 53, 53 are moved upward by the operation of the lifting cylinders 52, 52 and the molds supported on the rail plates 36, 36 are lifted up, the piece 61 is advanced by the operation of the pushing cylinder 60. When the mold is pressed, the corresponding piece 6
1, the rail plates 59, 5 of the mold standby section 57
9. Guide pieces 65, 65 are fixed between the rails 59, 59 on the pedestal of the mold standby section 57 to slidably support a flat claw mounting frame 64 in a direction parallel to the rail plates 59, 59. A transfer cylinder 66 is fixed horizontally below the cylinder, and the tip of the piston shaft of the cylinder is fixed to the claw attachment frame 64. Engaging claws 67 and 68 are provided on the upper surface of the rear end and the upper surface of the front end of the claw mounting frame 64, respectively. The engaging claws 67, 68 are elastically attached to the claw mounting frame 64 so as to be freely retractable and have a triangular shape with a rearward slope so as to sink in response to pressure from the rear. Therefore, when the mold is moved on the rail plates 59, 59 by being pressed by the contact piece 61, the engaging claw 67 on the upper surface of the rear end will sink under the mold due to the weight of the mold, and the metal mold will be moved. When the mold passes, it protrudes due to the elastic force.
When the transfer cylinder 66 is actuated to advance the claw attachment frame 64, the engaging claw 67 engages with the rear edge of the mold, allowing the mold to be transported in the direction of the arrow. Note that 69 and 69 are dam plates for preventing the mold from falling off.

The mold standby section 58 has the same structure as the mold standby section 57 and is shown in FIG. 9 with the same reference numerals as in FIG. 7, but is installed so that the direction of mold transfer is opposite to that of the mold standby section 58. Further, a pushing cylinder 70 is horizontally fixed to the rear part of the mold standby section 58, separated by the rails 3, 3. 71 is a piece attached to the tip of the piston shaft of the cylinder 70; 72 is a horizontal shaft having one end fixed to the piece and supported parallel to the cylinder 70 by a guide tube 73;

Next, the operation of this mold changing device as a whole will be explained.

In this device, when the press machine 1 is in operation, a mold to be set next on the press machine 1 is prepared in advance in the mold standby section 58. That is, the transfer cart 4 is moved to take out a predetermined mold stored in the mold storage shelf 2, place the mold on the mold loading basket 13, and transport the mold to the front mating position of the mold standby section 58. Transport trolley 4
to stop. Then, the engaging claws 30 and 31 are lowered by the operation of the lifting cylinder 23, and the pushing cylinder 70
is activated to press the mold with the contact piece 71 and slide it onto the plate rails 59, 59 of the mold standby section 58, where the mold is kept on standby. After pressing a predetermined amount, remove the fixing bolts, etc. of the mold of the press machine 1, circulate the endless chain 40, and pull out the mold engaged with the projections 51 along the rail plates 36, 36. It is stopped in front of the standby section 57. And mounting plate 53
is raised to lift the mold and release the engagement between the protrusion 51 and the mold, and at the same time press the mold with the contact plate 61 to move the mold to the plate rails 59, 5 of the mold standby section 57.
9. Slide it on top. After that, the other mold standby section 5
The transfer cylinder 66 of No. 8 is activated to engage the previously prepared mold with the engaging claw 67 and push it in the direction of the arrow, and in this way, the transfer cylinder 66 is reciprocated twice. Then, during the second forward movement, the engaging pawl 68 at the front end of the pawl mounting frame 64 pushes the mold, so that the mold can be transferred onto the mounting plate 53. Therefore, the moving body 41 is moved and the protrusion 51 is moved.
Then position it directly below the engagement hole of the mold,
By lowering the mounting plate 53, the protrusion 5 is inserted into the engagement hole.
1 to fit. Then, by rotating the endless chain 40, the mold can be carried into a predetermined setting position of the press machine 1, and the mold exchange is completed. Note that the mold taken out from the mold standby section 57 is placed in the mold loading basket 1.
3 is placed in a matching position in front of the mold standby section 57 and the transfer cylinder 66 is operated, the mold carrying basket 13 is placed on the mold carrying basket 13, and the mold can be moved to a predetermined mold storage space and stored.

As described above in the embodiments, the mold changing device according to the present invention has a mold standby section on one side of the mold changing conveyor that supports the mold removed from the press and transfers it to the mold loading basket. The mold standby section, which transfers the mold to be set in the press machine from the mold loading basket, is installed in parallel with the mold standby section so that they each operate independently, so if the mold is prepared in advance in the latter mold standby section, the mold can be transferred immediately. The mold can be replaced. In other words, the transfer cart is not needed when replacing the mold, and the mold replacement can be completed by temporarily waiting the mold removed from the press machine in the other mold waiting area, so several press machines can be installed side by side. Even when molds are to be replaced at the same time in different facilities, there is an advantage that molds can be replaced in a timely manner without having to wait for a transport cart.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
The figure is a plan view showing the arrangement of the entire device, Figure 2 is a partially enlarged plan view, Figure 3 is a front view of Figure 2, and Figure 4 is a front view of Figure 2.
The figure is a cross-sectional view taken along line A-A in Figure 2, and Figure 5 is a cross-sectional view taken along line A-A in Figure 2.
Figure 6 is an enlarged cross-sectional view taken along line B-B in the figure, and Figure 6 is C-
7 is an enlarged cross-sectional view taken along the line D-D in FIG. 2, FIG. 8 is an enlarged cross-sectional view taken along the line E-E in FIG. 2,
FIG. 9 is an enlarged cross-sectional view taken along line FF in FIG. 2. 1... Press machine, 2... Model storage shelf, 3, 3...
Rail, 4... Transfer trolley, 13... Model loading basket, 3
5... Mold exchange conveyor, 57, 58... Mold standby section.

Claims (1)

[Claims] 1 Each of the multiple press machines is equipped with a mold exchange conveyor that horizontally transports each mold from a fixed position to a fixed position, and a transverse rail is installed in front of a three-dimensional mold storage shelf. A mold loading basket that matches each mold storage space of the mold storage shelf is installed on a transfer trolley that reciprocates on the rail so that molds can be taken in and out freely, and the molds can be taken in and out. On one side of the exchange conveyor, there is a mold standby section that supports the mold removed from the press machine and delivers it to the mold carrying basket, and a mold waiting section that receives the mold to be set on the press machine from the mold carrying basket. A mold changing device characterized in that a mold waiting section for transferring the molds and a mold waiting section are arranged side by side so as to operate independently.