JPS63256429A - Exchanging process of forming drum and its device - Google Patents

Abstract

PURPOSE:To improve the efficiency and safety of exchanging operation by centering the main axis of a forming drum on the main axis of a forming machine in the state where a forming drum is kept on a forming drum keeping holder. CONSTITUTION:A forming drum 3a is transfered to a drum exchanging position C by a transferring carriage 7 and is kept in parallel with a forming drum 3b at the keeping position E for the second drum by the keeping holder 31 for the forming drum. A forming drum 3c is transferred to a drum fitting position B from the drum exchanging position C along the axis A of a main shaft, and the main shaft 2 of a forming machine 1 is inserted into the hollow shaft 4 of the forming drum 3c. While the forming drum 3c is rotated, it is registered, whereby the drum is integrally fitted to the forming machine 1. After the transferring carriage 7 and the forming drum keeping holder 31 having become empty are moved to the drum exchanging position C from the drum fitting position B, the empty forming drum keeping holder 31 is moved to the second drum keeping position E and is kept there, and then the transferring carriage 7 is placed on standby at a drum standby position F.

Description

[Detailed description of the invention]

The present invention relates to a method and apparatus for replacing a forming drum.

In recent years, the tire industry has begun to produce a wide variety of products in small quantities, and as a result, molding drums have become frequently replaced in response to changes in the type of tire. Conventionally, when replacing such a forming drum, the forming drum was taken out from the main shaft of the forming machine, hung on a crane, transported to a forming drum storage shelf installed near the forming machine, and then removed. The corresponding molding drum is hung from the storage shelf using a crane, and transported to and attached to the molding machine. Okay. However, in this conventional molding drum replacement method, the molding drum is transported while being suspended from a crane, so the transport speed is low, and the molding drum is not suspended from the crane in the molding drum storage rack. Since this requires a lot of work, there are problems in that the replacement work is inefficient and involves unsafe work. Moreover, in the conventional method, the forming drum and the main shaft of the forming machine are aligned while the forming drum is suspended from a crane, which not only requires the operator's skill, but also makes it difficult to align the forming drum with the main shaft of the forming machine while the forming drum is suspended from a crane. There is a problem in that the shaft and the main shaft may collide, causing damage to the circular shaft. 1. Old −
゛Such a problem arises when the forming drum is taken out along the axis of the main shaft of the molding machine from the drum installation position where it is integrated with the main shaft of the molding machine, and then moved to a drum replacement position that is a predetermined distance away from the drum installation position. a first step of transporting the drum along the spindle axis until the drum exchange position, and from a first drum storage position located on one side of the spindle axis at the drum exchange position to a second drum storage position located on the other side; , transports the forming drum stored between the drum to be replaced at the first drum storage position and the drum replacement position, and transports the molding drum taken out from the main shaft of the molding machine and transported to the drum replacement position. a second step of transporting the forming drum to the second drum storage position; a third step of transporting the drum to be replaced from the first drum storage position to the drum exchange position; and a third step of transporting the drum to be replaced from the first drum storage position to the drum replacement position. A fourth step of transporting the drum from the drum replacement position to the drum mounting position along the main shaft axis and attaching it to the main shaft of the molding machine to integrate the molding drum; a molding machine having a main shaft, a cylindrical molding drum that is detachably attached to the main shaft and can rotate together with the main shaft, and a drum mounting in which the molding drum is attached to the main shaft and integrated with the main shaft. and a drum replacement position that is a predetermined distance away from the drum mounting position along the main shaft axis of the molding machine. A transport vehicle is moved between a first drum storage position located on one side of the spindle axis at the drum replacement position and a second drum storage position located on the other side of the drum replacement position. a plurality of molding drum storage stands capable of supporting the molding drums so that their axes are parallel to the main shaft axis of the molding machine; A solution can be provided by a forming drum changing device which moves together with the transport carriage when it is fixed to the carriage. When replacing the molding drum in response to a change in the type of molded product, for example a tire, first remove the molding drum from the main shaft of the molding machine, that is, from the drum mounting position, and store the molding drum fixed on a transport vehicle. Next, move this transport vehicle and transport the removed forming drum to the drum replacement position.Next, release the molding drum storage stand from the transport vehicle.Next, remove this forming drum storage stand. , transported to the second drum storage position along with the removed forming drum.
Next, the forming drum stored between the drum to be replaced at the second drum storage position and the drum replacement position is transferred to the second drum storage position via the transport vehicle that is stopped at the drum replacement position. transport. Here, if the forming drums between the drum to be replaced and the drum exchange position can be transported to the second drum storage position without using a transport vehicle, these forming drums can be transferred to the second drum storage position first. position, and then the conveyor single ball forming drum can also be transported to a second storage position. The drum to be replaced is transported to the drum exchange position together with the forming drum storage base that supports the drum to be replaced, and then positioned and fixed to the transport vehicle stopped at the drum exchange position.Next, the transport vehicle is moved and After the replacement drum is transported from the drum replacement position to the drum mounting position, the drum to be replaced is integrally attached to the main shaft of the molding machine. in this way,
In this invention, since the molding drums are each supported by a molding drum storage table, the conveyance speed can be increased, and the work of suspending the drums using a crane is not required, which improves the efficiency and safety of the replacement work. Furthermore, since the forming drum and the main shaft of the molding machine are aligned with each other while the forming drum is supported on the forming drum storage stand, alignment is reliable and easy, and there is no need for operators to have experience in replacement work. There is no possibility that the hollow shaft of the forming drum and the main shaft collide. Strut 1 Hereinafter, one embodiment of the present invention will be described based on the drawings. In Figure 1.2.3, l is the rotating horizontal main axis 2
This is a molding machine for molding a molded product, such as a green tire, and a cylindrical molding drum 3 is detachably attached to the main shaft 2 of this molding machine 1. Specifically, after fitting the hollow shaft 4 of the forming drum 3 to the main shaft 2, a pin (not shown) attached to the hollow shaft 4 is inserted into a pin hole (not shown) formed in the main shaft 2. are attached and integrated. As a result, when the forming drum 3 is attached to the main shaft 2,
It rotates together with the main shaft 2. A pair of horizontal guide rails 6 extending along the main shaft axis A of the molding machine I are laid on the floor surface 5 in front of the molding machine I,
A transport vehicle 7 is supported on these guide rails 8 and reciprocated along the main shaft axis A while being guided by the guide rails 8. This carrier 7 has guide rails 6
It has a frame 9 to which a slide bearing 8 is attached which is slidably engaged with the frame 9, and a lifter U having an elevating frame 10 is attached to the frame 9. The reason why the transport vehicle 7 is provided with a lid 11 that can be raised and lowered is that even if the outer diameters of the molding drums 3 are different, the same center height can be obtained for all the molding drums 3. It's for a reason. A pair of horizontal guide rails 12 are fixed to the front and rear ends of the lifting frame 10, and these guide rails 12 extend perpendicularly to the main shaft axis A. A chain 15 with an end is fixed to a bracket 14 installed between the guide rails 8 in parallel with the guide rail θ, and a sprocket 1B rotatably supported by the frame 9 is engaged with the chain 15. Further, a motor 17 is attached to the frame 8. The rotational driving force of the motor 17 is applied to the timing pulley 13, the timing belt 20, and the timing pulley 21.
As a result, while being guided by the guide rail 8, the conveying carriage 7 is moved to the drum mounting position B where the forming drum 3 and the main shaft 2 of the molding machine 1 are integrated, and to this drum mounting position. It reciprocates along the spindle axis A between iB and a drum exchange point Hc that is a predetermined distance apart along the spindle axis A. The aforementioned chain 15, sprocket 1B, motor 1? , the timing belt 20 constitutes a reciprocating mechanism 22 as a whole. A pair of horizontal guide rails 2B are laid in the first drum storage position 1iiiID located on one side of the one-axis axis A at the drum exchange position 2tc. A pair of horizontal guide rails 27 are laid in the second drum storage position 2iH located on the side. These guide rails 2B and guide rails 27 are arranged symmetrically with respect to the main shaft axis A and at right angles to the main shaft axis A. A gap is formed between these guide rails 2B and 27 for the transport vehicle 7 to enter, and the height of the guide rails 26 and 27 is made to match the height of the guide rail 12, so that the transport When the trolley 7 is stopped at the drum exchange position 1c, the guide rail 12 moves the guide rails 2B and 27 to 4.
11 to form a continuous guide rail connecting the first drum storage position HD and the second drum storage position fiE. Reference numeral 31 designates a plurality of forming drum storage stands, and each forming drum storage stand 3 has a frame 33 provided with wheels 32 that rotate while holding the guide rail I2.26 or 27 from above and below. As a result, the forming drum storage stand 31 can be moved between the first drum storage position 2 and the second drum storage position E via the transport carriage 7 which is stopped at the drum exchange position C. A pair of horizontal support rollers 35 parallel to the spindle axis A are attached to the frame 33 via bearings 34.
is rotatably supported, and when the forming drum 3 is placed on these support rollers 35, the forming drum 3 rolls into contact with the outer periphery of the support roller 35 and is driven such that its axis is parallel to the main shaft axis A. It is rotatably supported from both sides. Further, a stopper block 37 is fixed to each forming drum storage stand 31. When any of the forming drum storage stands 31 is placed on the transport vehicle 7, the transport vehicle 7
The stopper pin 38 attached to the molding drum storage stand 31 is inserted into the stopper block 37 of the molding drum storage stand 31, and the forming drum storage stand 31 is positioned and fixed to the transport vehicle 7. Thereby, the forming drum storage stand 31 can be moved together with the transport carriage 7. Note that 39 is a guard fixed to the frame 33, and these guards 39
prevents the forming drum 3 supported by the support roller 35 from falling during transportation. Next, the operation of one embodiment of the present invention will be explained. Now, the molding drum 3a installed in the molding machine l is connected to the main shaft 2.
Let's say that, for example, a tire is being molded by rotating in unison with the machine. At this time, the molding drum storage stand 31 for supporting the molding drum 3a is waiting on the guide rail 2θ of the first drum storage position 2tD, and from any forming drum storage stand 31 on the guide rail 2B. Even the drums are replaced!
Close to IC. Furthermore, the transport vehicle 7 is stopped at a drum standby position fiF between the drum installation position 12tB and the drum exchange position 1c.Next, there is a change in the type of tire to be molded, and in response need to be replaced, e.g. drum mounting position H
Forming drum 3 (attached to main shaft 2) at B
Remove a and store the first drum! When it becomes necessary to mount the molding drum 3c, which is a drum to be replaced, stored in the molding machine 1, the motor 17 is activated to rotate the sprocket 1B engaged with the chain 15. As a result, the carriage 7 is moved from the drum standby position fiF to the drum exchange position liC while being guided by the guide rail 8.
and guide rail 12 and guide rail 28.2.
Next, the empty molding drum storage stand 31 waiting at the first drum storage position iD is moved to the drum exchange position C.
0th order, which is moved towards the
The stopper pin 38 is inserted into the stopper block 37 of the empty forming drum storage stand 31, and the forming drum storage stand 31 is positioned and fixed on the transport vehicle 7. Next, the motor 1
7 to move the conveyance truck 7 to the empty molding drum storage stand 31.
At the same time, the drum is moved from the drum replacement position 2iC to the drum installation position fiB. Next, the lifter 11 is operated to raise the forming drum storage stand 31 to a predetermined height where the support roller 35 contacts the outer periphery of the forming drum 3a. Next, when the motor 17 is activated and the conveyance cart 7 is moved along the main shaft axis A, the forming drum 3a supported from below by the support roller 35 of the forming drum storage stand 31 is moved. The drum 3a is pulled out from the main shaft 2 and taken out from a drum mounting position fiB that is integrated with the main shaft 2 of the molding machine 1. By such movement of the transport vehicle 7, the forming drum 3a is transported to the drum exchange position tc while being guided by the guide rails 6. Next, when the lifter 11 is activated and the forming drum storage stand 31 is lowered until the guide rail 12 and the guide rail 28, 27 are at the same height, the guide rail! Next, the stopper pin 38 is retracted to release the forming drum storage stand 31 from the transport vehicle 7, and then the forming drum storage stand 31 is moved to the drum exchange position C together with the forming drum 3a. If the second drum storage position from! Next, the forming drum 3b stored between the forming drum 3C, which is the drum to be replaced, and the drum exchange position C is transferred from the first drum storage position rIID to the second drum storage position E. In this case, the molding drum 3b and the molding drum storage stand 31 supporting the molding drum 3b are transferred to the second drum via the transport vehicle-7 that is stopped at the drum exchange position C. Move it to storage position 1iE. Thereby, the forming drum 3a and forming drum 3b taken out from forming@1 are stored side by side in the second drum storage position fiE. Next, forming drum 3ct - forming drum storage stand 3! Then, the stopper pin 3B is inserted into the stopper block 37, and the forming drum supporting the forming drum 3C is moved from the first drum storage position to the drum exchange position C and placed on the conveyance cart 7. The storage platform 31 is transferred to the transport vehicle 7
Next, the lifter 11 is operated to raise and lower the lifting frame 10° to a predetermined height where the axis of the forming drum 3C and the main shaft axis A coincide, the forming drum storage stand 31, the forming drum 3
Increase c. Next, the motor 17 is operated to move the conveyance cart 7 and forming drum storage stand 31 to the drum exchange position 5! Drum mounting position from IC?
Move to IB. As a result, the forming drum 3c is conveyed along the main shaft axis A from the drum exchange position ff1c to the drum mounting position 22B, and the main shaft 2 of the forming 41!1 fits into the hollow shaft 4 of the forming drum 3c. While rotating the molding drum 3c, align the pins of the hollow shaft 4 with the pin holes of the main shaft 2. Next, insert the pins into these pin holes, and then integrate the molding drum 3c into the molding machine l. Next, the motor 17 is operated to
After moving the empty forming drum storage stand 31 from the drum mounting position RB to the drum replacement position C, the lifter 11 is operated to lower the elevating frame IO and the empty forming drum storage stand 31. Stopper pin 38
After pulling out the empty forming drum storage stand 31 from the stopper block 37, the empty forming drum storage stand 31 is moved from the conveyance cart 7 to the second drum storage position fiE, and is stored at the second drum storage position ME.Next, the motor 17 is activated. The carriage 7 is then moved to the drum standby position IF, and is kept on standby at this drum standby position F. As explained above, according to the present invention, the forming drum can be transported at high speed, and the work of suspending it like a crane is not required, improving the efficiency and safety of the replacement work. . In addition, alignment between the forming drum and the main shaft becomes reliable and easy, the operator does not need to be trained in the replacement work, and there is no possibility of damage due to collision between the two.

[Brief explanation of the drawing]

FIG. 1 is a schematic overall plan view showing an embodiment of the present invention, FIG. 2 is a front view of the vicinity of the transport vehicle and forming drum storage stand,
FIG. 3 is a sectional view taken along the line II in FIG. 2. 1... Molding machine 2... Main shaft 3... Forming drum 7... Transport vehicle 31... Forming drum storage stand A... Main shaft axis B... Drum mounting position C.
...Drum replacement position D...First drum storage position E...Second drum storage position Patent applicant Brideston Co., Ltd. Agent Patent attorney Ta 1) Toshio lol! , 2 fig. 3

Claims (2)

[Claims] (1) Take out the molding drum along the main shaft axis of the molding machine from the drum mounting position that is integrated with the main shaft of the molding machine and transport it along the main shaft axis to a drum replacement position that is a predetermined distance away from the drum mounting position. from a first drum storage position located on one side of the spindle axis at the drum exchange position to a second drum storage position located on the other side; The forming drum stored between the drum to be replaced and the drum replacement position is transported, and the forming drum that has been taken out from the main shaft of the molding machine and transported to the drum replacement position is transported to the second drum. The second conveyor to the storage position
a third step of transporting the drum to be replaced from the first drum storage position to the drum replacement position; and a third step of transporting the drum to be replaced from the drum replacement position to the drum mounting position along the spindle axis. A method for replacing a molding drum, comprising the steps of: transporting the molding drum, and attaching and integrating the molding drum to the main shaft of the molding machine. (2) A molding machine having a rotating main shaft, a cylindrical molding drum that is detachably attached to the main shaft and can rotate together with the main shaft, and a molding drum that is attached to the main shaft and integrated. a conveyor cart that reciprocates along the main shaft axis of the molding machine between a drum mounting position and a drum replacement position that is a predetermined distance apart from the drum mounting position along the main shaft axis of the molding machine, and the drum replacement position. moving between a first drum storage position located on one side of the spindle axis and a second drum storage position located on the other side of the main shaft axis via a conveying cart stopped at the drum exchange position; and a plurality of molding drum storage stands capable of supporting the molding drums so that their axes are parallel to the main shaft axis of the molding machine, the molding drum storage stands being fixed to the transport vehicle. A forming drum changing device characterized in that it moves together with this carrier when the forming drum changes.