JP6551306B2 - Method and apparatus for transferring formwork groups - Google Patents

Description

  The present invention relates to a conveyance method and a conveyance apparatus for a mold group in which mold groups arranged in series are sandwiched between a pusher cylinder and a cushion cylinder and intermittently conveyed by a pitch of one mold frame or a plurality of mold frames. More specifically, the present invention relates to a method and apparatus for transporting a form group that can keep a gap between the formwork constant even when the formwork is thermally expanded.

  In a casting facility using a mold, as shown in Patent Document 1 and Patent Document 2, a group of molds arranged in series is sandwiched between a pusher cylinder and a cushion cylinder, and one mold frame or a plurality of mold frames Intermittent conveyance is carried out every minute pitch.

  Patent Document 1 describes a method of transporting a group of molds arranged in series between a hydraulic pusher cylinder and a hydraulic cushion cylinder using a hydraulic cylinder of the mold group that intermittently conveys the molds one pitch at a time. There is. In this transfer method, when transfer is performed with a gap between the hydraulic pusher cylinder, the mold, and the hydraulic cushion cylinder, the hydraulic pusher cylinder is operated at a low speed while the cushion cylinder having the gap does not move. When the cushion cylinder is pushed by the mold and starts to move backward, the hydraulic pusher cylinder is operated at a high speed, and a switch for detecting the position to decelerate during the high-speed transfer is attached to the pusher.

  Patent Document 2 also describes a method of transporting a mold group by a hydraulic cylinder in which mold groups arranged in series are sandwiched between a hydraulic pusher cylinder and a hydraulic cushion cylinder and are transported intermittently by a pitch corresponding to one mold frame. . In this transfer method, when transfer is performed with a gap between the hydraulic pusher cylinder, the mold, and the hydraulic cushion cylinder, the hydraulic pusher cylinder is operated at a low speed while the cushion cylinder having the gap does not move. The point that the hydraulic pusher cylinder is operated at a high speed after the cushion cylinder is pushed by the formwork and retreats is the same as in Patent Document 1, but the switch for detecting the position to decelerate during the high-speed conveyance is set on the cushion side. By mounting, it is characterized by keeping the deceleration distance constant without being affected by the thermal expansion of the formwork.

  However, both Patent Documents 1 and 2 have a problem of being affected by fluctuations in the gap between the molds due to the thermal expansion of the molds because the fixed stroke cylinders are used as the hydraulic pusher cylinder and the hydraulic cushion cylinder. That is, during the operation of the equipment, the molds become hot and thermally expand, so the gap between the molds is minimized, and the low-speed time for gap clearance can be minimized. Due to the low temperature of the frame, the gap between the molds is maximized, and the slowing time for gap clearance is also maximized. In some cases, it is difficult to operate the equipment in a predetermined process time. If there is enough capacity in the equipment, the formwork with the largest gap between the formwork is adjusted so that it can be operated in a predetermined process time immediately after the operation of the low-temperature equipment is started. Since the process time when the formwork with the smallest gap becomes high temperature becomes faster than the predetermined process time, there is also a problem that the wear of the equipment by high speed operation becomes faster.

JP 2004-042073 A JP2013-052422A

  Therefore, an object of the present invention is to provide a clearance time immediately after the start of operation of a facility having a low clearance for a form having a maximum clearance, without shortening the operation time of each actuator (cylinder) more than necessary. It is not affected by the thermal expansion of the mold so that the operating time of each actuator (cylinder) can be adjusted without difficulty according to the gap when the mold with the smallest gap in the original operating state becomes hot. It is another object of the present invention to provide a method and apparatus for transporting a group of molds capable of maintaining a constant gap between the molds.

  The method for transferring formwork groups according to the present invention made to solve the above-mentioned problems is characterized in that the formwork groups arranged in series are sandwiched by the pusher cylinder and the cushion cylinder, and the pitch of one form frame or multiple form frames In the method of conveying the form group by the cylinder for intermittent conveyance, the cushion cylinder uses an electric cylinder with an extension position recognition function and an intermediate stop function that can arbitrarily change the stop position on the extension end side, or a hydraulic cylinder And the thermal expansion of the mold is absorbed.

In addition, after the stop position is recognized and stored by the expansion / contraction position recognition function on the effective end side of the cushion when conveyance of the pusher end is completed, in the conveyance process of the next cycle, 1 for the stored effective end stop position. the length of the mold component, to extend the rod of the cushion cylinder, by a return end of the cushion cylinder, it is possible to maintain the gap between the mold constant.

  Further, the transport apparatus for form groups according to the present invention, which has been made to solve the above-mentioned problems, has a configuration in which the form groups arranged in series are sandwiched by the pusher cylinder and the cushion cylinder. In the carriage by a cylinder of a formwork group for intermittently transporting a pitch of each pitch, the cushion cylinder as an electric cylinder or hydraulic cylinder with an expansion / contraction position recognition function and a halfway stop function which can arbitrarily change the stop position on the extension end side. Is used to absorb the thermal expansion of the formwork.

  In addition, an encoder or a linear scale can be used as a means for exhibiting an expansion-contraction position recognition function.

In addition, it has a clamp device that holds the mold frame upstream of the mold frame 1 of the mold frame conveyance device on the cushion side at an arbitrary stop position where the stop position is not determined due to thermal expansion. In order to feed the form-feeder frame that is positioned to a predetermined position on the carriage, it is possible to provide a formwork positioning device that performs positioning by sandwiching a part of the formwork carriage.

  As described above, when the distance between the pusher cylinder and the cushion cylinder is long and the number of the transfer form groups arranged in series is large, the variation amount of the gap between the form due to thermal expansion is very large in the prior art. Immediately after the start of operation of a low-temperature facility where the gap between the molds is the largest, the gap time at low temperature will be very long, so the large high-speed line completes the operation within the predetermined process time It is difficult to do. However, according to the present invention, the gap between the molds can be made constant without being affected by thermal expansion, and a stable operation time can be secured without unnecessarily increasing the operation time of each actuator. It becomes possible.

It is a front view in the structure of this invention, Comprising: It is a clearance gap related figure at the time of a formwork high temperature and low temperature. It is a top view (AA arrow) which shows the structure of this invention. It is a top view (BB arrow) which shows the structure of this invention. It is a front view which shows the apparatus structure by the side of the pusher of this invention. It is a front view (frame feed state figure 1) which shows the device structure of the cushion side of the present invention. It is a sectional view (CC arrow) at the time of the formwork truck positioning device opening of the cushion side of the present invention opening. It is a sectional view (CC arrow) at the time of the formwork truck positioning device closing of the cushion side of the present invention closing. It is a front view (frame feed state figure 2) which shows the device structure of the cushion side of the present invention. It is a front view (frame feed state figure 3) which shows the device structure of the cushion side of the present invention. It is a front view (frame feed state figure 4) which shows the device structure of the cushion side of the present invention. It is a front view (frame feed state figure 5) which shows the apparatus structure of the cushion side of the present invention. It is a front view in the conventional structure, Comprising: It is a clearance gap related figure at the time of mold form high temperature and low temperature. It is a front view which shows the apparatus structure by the side of the conventional pusher. It is a front view (formwork feeding state figure 1) which shows the conventional device structure of the cushion side. It is a front view (formwork feeding state figure 2) which shows the conventional device structure of the cushion side. It is a front view (formwork feed state figure 3) which shows the conventional device structure of the cushion side. It is a front view (formwork feed state diagram 4) which shows the conventional device structure of the cushion side. It is a front view (formwork feed state diagram 5) which shows the conventional cushion side device structure.

Hereinafter, an embodiment of the present invention will be described. First, mold feeding of a conventional structure will be described with reference to FIGS.
As shown in FIGS. 11 and 12, the mold 101 is placed on a mold bogie 102 having a longer dimension than the mold 101 and conveyed. The conveyance form group 103 arranged in series is conveyed in a state where the form carriages 102 are in contact with each other. Traversers 106 and 107 for carrying in and out the mold 101 one by one in the perpendicular direction are arranged on the carry-in side 104 and the carry-out side 105 of the transport mold group 103 arranged in series.

  A pusher is used to push the mold 101 on the carry-in traverser 106 downstream by one frame and place the top mold 109 of the transport mold group 103 staying on the fixed rail 108 on the carry-out traverser 107. The device 110 and the cushion device 111 are arranged opposite to the outside of the transport form group 103.

  Each of the traversers 106 and 107 for carrying in and out has a mechanical lock 112 for positioning the formwork 101 to be loaded, and on the downstream side of the carry-in side traverser 106, a daruma for preventing derailment due to reverse running of the formwork 101. A stopper 113 is provided (see FIGS. 11 and 12). The dharma stopper 113 is lowered when the pusher device 110 feeds one frame 101 and is raised by a one-frame feed completion signal from the pusher device 110 to prevent derailment due to reverse movement of the mold 101.

  A reference for feeding the mold 101 by the pusher device 110 is, for example, the mold 114 carried out from the carry-in traverser 106 (see FIG. 12). If there is a mold 101 to be accurately stopped at a predetermined stop position in the middle portion of the transfer mold group 103 staying on the fixed rail 108, the mold 101 may be used as a feed reference.

  In order to load the mold 101 loaded on the carry-in traverser 106 between the transfer molds 103 arranged in series with the pusher device 110, the return end of the cylinder head 115 of the pusher device 110 and the carry-in traverser 106 are A gap a is provided between the molds 101, and a gap b is provided between the mold 101 on the carry-in side traverser 106 and the mold 114 serving as a feed reference unloaded from the carry-in side traverser 106 (see FIG. 12).

  The cushion device 111 side is retained on the fixed rail 108 in order to carry out the molds 101 carried on the carry-out side traverser 107 from between the conveyance mold group 103 and the cushion device 111 arranged in series. A gap d is provided between the top form 109 of the transfer form group 103 and the form 101 on the delivery side traverser 107, and the form 101 on the delivery side traverser 107 and the effective end of the cylinder head 116 of the cushion device 111 A gap e is provided between them (see FIG. 16).

  Since the working form carriage 102 is thermally expanded by heating, the installation pitch of the carry-in side traverser 106 and the carry-out side traverser 107 needs to be determined by the dimensions of the formwork carriage 102 when thermally expanded. Is used as the mold 114 that has been carried out from the carry-in traverser 106. Therefore, when the mold 101 is cold at the time of starting the equipment, the transport mold group 103 staying on the fixed rail 108 is retained. At the top of the form frame 109 is not fed. Length variation L due to thermal expansion of the formwork carriage 102 = 1 frame variation l (el) × the number of frames mounted on the fixed rail 108 (see FIGS. 11, 13, and 14).

  The clamping mold 117 of the sandwiching method is used to clamp the leading mold 109 of the conveying mold group 103 staying on the fixed rail 108 that has not been fed and the mold 101 loaded onto the unloading-side traverser 107. Further, the convex portion 118 provided at the lower part of the formwork carriage 102 is sandwiched and pushed out to a predetermined position, and derailment due to the first run of the formwork 109 when the carriage of the carry-out side traverser 107 is on the leading end side (not shown) is prevented. . When the convex portion 118 is not provided in the lower part of the formwork carriage 102, a part to be pinched by the clamping method clamp device 117 is a formwork carriage axle 120. By this process, a gap c is generated between the top mold 109 of the transfer mold group 103 staying on the fixed rail 108 and the pusher-side mold 121. The clearance c is adjusted to a minimum dimension at the time of thermal expansion of the mold. When the formwork 101 is cold at the start of the equipment, this gap is c + L (see FIG. 15).

  Further, in order to provide a gap d between the leading mold 109 of the conveyance mold group 103 and the mold 101 loaded onto the carry-out traverser 107, the mold 101 on the carry-out traverser 107 is moved to the carry-out traverser 107. The mechanical lock 112 mounted on 107 is fed to a predetermined position of the unloading side traverser 107, and the mold 101 is held at that position until it is unloaded by a pusher device (not shown) downstream of the unloading side traverser 107 (see FIG. 16).

  The mechanical lock 112 has a force to push up the roller 112a upward by a spring (not shown) housed in the case 112b from below, and the frame on the carry-out side traverser 107 sent by the pinching type clamp device 117 is used. By pushing up the corner of the convex portion 118 of the mold carriage 102 101, the mold 101 on the unloading side traverser 107 can be fed to a predetermined position.

  Similarly, the mechanical lock 112 mounted on the carry-in traverser 106 feeds the mold 101 carried in from an upstream pusher device (not shown) to a predetermined position of the carry-in traverser 106 at the return end of the carry-in traverser 106 (not shown). The mold 101 is held at that position until it is carried out by the pusher device 110 (see FIG. 12).

  In order to secure the gap described above, after the pusher device 110 has been fed, before the step of pushing out the two molds 122 that are not fed by the clamping system 117, the gaps c (c + L), d, e For this distance, the cylinder head 116 of the cushion device 111 is moved to the side where the rod contracts. This process is referred to as a re-use process of the cushion device 111 (see FIGS. 14, 15, and 16). The clearance e is a clearance between the form 101 on the unloading side traverser 107, which has been fed to a predetermined position by the mechanical lock 112, and the cylinder head 116 of the cushioning device 111 after reactivation (see FIG. 16).

  In this way, after securing a state where there is a gap between the leading mold 109 of the conveyance mold group 103 and the cylinder head 116 of the cushion device 111, the mold 101 on the carry-out side traverser 107 is unloaded. The side traverser 107 carries out the pusher device 110 and the cushion device 111 in a direction perpendicular to the nipping and feeding direction.

  In the case of nipping and feeding by the pusher device 110 and the cushion device 111, in the conventional formwork feeding device, the gap a + b between the cylinder head 115 of the pusher device 110 and the cylinder head 116 of the cushion device 111 + when the mold is hot c or the mold When the frame is cold (c + L) + d is moved at a low speed, the clearance is eliminated and the cylinder head 116 of the cushion device 111 is retracted (specifically, the OFF signal of the cushion head return end detection switch). Therefore, when the number of molds in the conveyance mold group 103 is large, the gap L between the frames when the mold 101 is cold becomes very large, and when the low-speed time becomes long, the predetermined process time is increased. There is a problem that mold feeding can not be completed within. In order to avoid the impact due to the collision of the formwork carriage 102, the speed cannot be increased at a low speed. Therefore, in order to complete the formwork feeding within a predetermined process time, it is necessary to increase the acceleration / deceleration speed and the high speed. Therefore, it is necessary to improve the capabilities of the pusher device 110 and the cushion device 111.

  Up to now, the capacity increase of the pusher device 110 and the cushion device 111 only for the state where the mold 101 at the time of starting the equipment is cooled was regarded as a margin of the facility. However, in recent years when energy conservation is screamed, the above margin is wasted. It is necessary to reform awareness.

  Further, since the hydraulic cylinder 123 is conventionally used as the pusher device 110 and the cushion device 111 as an actuator having a large thrust, the cylinder stroke is fixed and the thrust of the hydraulic cylinder 123 is very large. It is difficult to select the stroke of the hydraulic cylinder 123 according to the time when the mold 101 is cold, and to stop at an arbitrary position in the middle of the stroke of the hydraulic cylinder 123 in accordance with the thermal expansion of the mold carriage 102. In the case where the vehicle does not stop at the halfway stop position, the thermally expanded formwork carriage 102 is pushed back, and the equipment such as the dharma stopper 113 may be damaged. Therefore, the electric cylinder 23 having a large thrust has recently been employed. The motorized cylinder 23 is Since the position of the cylinder head 16 can be detected using the above, the stroke of the electric cylinder 23 of the cushion device 11 is selected according to the mold frame 1 being cooled, It has become easier to control the cylinder 23 to stop at an arbitrary position in the middle of the stroke.

Hereinafter, the structure and operation of the present invention will be described with reference to FIGS.
The difference between the conventional structure and the device structure of the present invention is that the cushion device (cushion cylinder) 11 can be used to detect the position of the cylinder head 16 by extension position recognition means such as an encoder and stop the cylinder head 16 halfway. The mold 1 at the frame upstream of the delivery side traverser (form carrier conveyance device) 7 on the cushion device 11 side where the stop position is not determined due to the use of the cylinder 23 and the thermal expansion of the mold 1 and the mold carriage 2 The convex portion 18 of the formwork carriage 2 is provided to have the clamp device 34 held at an arbitrary stop position, and to feed the form 1 of the feed excess located on the discharge side traverser 7 on the cushion device 11 side to a predetermined position. It is a point which has a clamp device 17 of the pinching system which performs positioning by pinching.

  When using the electric cylinder 23 for the cushion device 11, the pusher device (pusher cylinder) 10 also generally uses the electric cylinder 23 of the same size, but the pusher device 110 using the hydraulic cylinder 123 of the conventional structure is used Things are also possible. Further, instead of the electric cylinder 23, a hydraulic cylinder with an expansion / contraction position recognition function and a halfway stop function may be used for the cushion device 11.

  The return end position obtained by storing the effective end position of the cylinder head 16 of the cushion device 11 is the stored effective end position of the previous cycle + the formwork length−the gap d (see FIG. 10).

  As in the conventional structure, the form 1 is placed on the form carrier 2 having a dimension longer than that of the form 1 and conveyed. The conveyance form group 3 arranged in series is conveyed in a state where the form carriages 2 are in contact with each other. Traversers 6 and 7 for loading and unloading the molds 1 one frame at a time in the orthogonal direction are respectively disposed on the loading side 4 and the unloading side 5 of the transfer mold groups 3 arranged in series.

  The formwork 1 on the carry-in traverser (formwork transfer device) 6 is pushed downstream by one frame, and the leading formwork 9 of the transfer formwork group 3 staying on the fixed rail 8 is placed on the carry-out traverser 7. For this reason, the pusher device 10 and the cushion device 11 are arranged opposite to the outside of the conveying mold group 3. Each of the traversers 6 and 7 to be carried in and out has a clamping method clamp device 17 for positioning the form 1 to be loaded, and on the downstream side of the carry-in side traverser 6 prevents derailment due to reverse running of the form 1 For this purpose, a dharma stopper (derailing prevention stopper) 13 is provided (see FIG. 1). The dharma stopper 13 is lowered when the frame 1 is fed by the pusher device 10 and is raised by a one-frame feed completion signal of the pusher device 10 to prevent derailment due to reverse running of the mold 1 (see FIG. 4).

  A reference for feeding the mold 1 by the pusher device 10 is, for example, the mold 14 carried out from the carry-in traverser 6 (see FIG. 4). If there is a mold 1 to be accurately stopped at a predetermined stop position in the middle portion of the transfer mold group 3 staying on the fixed rail 8, the mold 1 may be used as a feed reference.

  In order to load the mold 1 loaded on the carry-in traverser 6 between the transfer mold groups 3 arranged in series with the pusher device 10, the return end of the cylinder head 15 of the pusher device 10 and the carry-in traverser 6 A gap a is provided between the molds 1, and a gap b is provided between the mold 1 on the carry-in traverser 6 and the mold 14 used as a reference for transporting from the carry-in traverser 6 (see FIG. 4).

  The cushion device 11 side stays on the fixed rail 8 in order to carry out the mold 1 loaded on the carry-out side traverser 7 from between the conveyance mold group 3 arranged in series and the cushion device 11. A gap d is provided between the leading mold 9 of the conveying mold group 3 and the mold 1 on the carry-out traverser 7, and the effective end of the mold 1 on the carry-out traverser 7 and the cylinder head 16 of the cushion device 11. A gap e is provided between them (see FIG. 9).

  Since the formwork cart 2 in operation is thermally expanded by heating, the installation pitch of the carry-in side traverser 6 and the carry-out side traverser 7 is determined by the dimensions of the formwork cart 2 when thermally expanded, which is the same as the conventional structure. However, since the feed standard of the form 1 by the pusher device 10 is the form 14 taken out from the carry-in side traverser 6, the change amount L of the length due to the thermal expansion of the form carriage 1 change amount 1 of the frame ) × As many as the number of frames mounted on the fixed rail, the leading mold 9 of the conveying mold group 3 staying on the fixed rail 8 and the mold 1 loaded onto the unloading-side traverser 7 are not fed ( See Figures 1, 8 and 9).

  The leading mold 9 of the conveying mold group 3 staying on the fixed rail 8 has a smooth shape attached to the cylinders 32 facing the smooth surfaces 31 on both sides of the mold carriage 2 on which the mold 1 is placed. The tip end liner 33 that is held is pressed and clamped, and the clamp device 34 is fixed at a position where it has stopped without being fed (see FIGS. 6a and 6b).

  The formwork 1 carried on the carry-out side traverser 7 that has not been fed is sandwiched by the clamping device 17 of the sandwiching method, and the projection 18 provided at the lower part of the formwork carriage 2 is sandwiched and pushed out to a predetermined position. When the convex portion 18 is not provided at the lower part of the formwork carriage 2, a part to be pinched by the clamping device 17 of the pinching method is a formwork carriage axle 20.

  By this process, a gap of d to d + L is generated between the top form 9 of the transfer form group 3 staying on the fixed rail 8 and the form 1 carried onto the discharge side traverser 7 (see FIG. 9).

  Similarly, the clamping device 17 of the sandwiching method mounted on the carry-in side traverser 6 transfers the mold 1 loaded from an upstream pusher device (not shown) at the return end 26 of the carry-in side traverser 6 to a predetermined value of the carry-in side traverser 6. The mold 1 is fed to a position and held at that position until it is unloaded by the pusher device 10 (see FIG. 4).

  In order to secure the gap described above, the cylinder head of the cushion device 11 by the distance of the gap d + L + e before the step of pushing out the mold 22 of the insufficient feeding by the clamping device 17 of pinching method after the feeding of the pusher device 10 is completed. 16 is moved to the side where the rod shrinks. This process is referred to as a re-effecting process of the cushion device 11 (see FIGS. 7, 8, and 9). The gap e is a gap between the mold 1 on the carry-out side traverser 7 sent to a predetermined position by the clamping system 17 and the cylinder head 16 of the cushioning device 11 after reactivation (FIG. 9). reference).

  Thus, after ensuring the state which has the clearance gap between the head formwork 9 of the conveyance formwork group 3, and the cylinder head 16 of the cushion apparatus 11, the formwork 1 on the carrying-out side traverser 7 is carried out. The side traverser 7 carries out the pusher device 10 and the cushion device 11 in a direction perpendicular to the sandwiching feed direction.

  Since the length change amount L due to thermal expansion of the mold carriage 2 is equal to the change amount 1 per frame × the number of frames mounted on the fixed rail 8, the mold frame 1 stays on the fixed rail 8 when the mold 1 is in a low temperature state. The leading mold 9 in the conveying mold group 3 is not fed by the L dimension with respect to the stop position when the mold is hot (see FIG. 7). The position of the cylinder head 16 of the cushion device 11 at this time (see FIG. 7) is stored, and after the mold 1 loaded on the carry-out side traverser 7 is carried out to the leading end side 19, the cylinder head of the cushion device 11 is taken. 16 returns to the position calculated from the stored effective end position, that is, the forward position of the cylinder head = the stored effective end position + the formwork length−the gap d (see FIG. 10).

  Thus, according to the present invention, by controlling the return end position of the cylinder head 16 of the cushion device 11, the length change amount L due to the thermal expansion of the mold carriage 2 that occurs when the mold 1 is cold. It is possible to eliminate the influence of the number of mounting frames on the fixed rail 8.

DESCRIPTION OF SYMBOLS 1 formwork 2 formwork cart 3 transfer formwork group 4 carry-in side 5 carry-out side 6 carry-in side traverser 7 carry-out side traverser 8 fixed rail 9 leading formwork 10 pusher device 11 cushioning device 13 daruma stopper 14 carried out formwork 15 cylinder Head 16 Cylinder head 17 Clamping system for pinching method 18 Convex part 19 Going end side 20 form wheel bogie axle 21 Pusher side form frame 22 Formwork with insufficient feed 23 Electric cylinder 26 Return end 31 Smooth surface 32 Cylinder 33 With smooth shape Leading end liner 34 Clamping device 101 Formwork 102 Formwork carriage 103 Conveying formwork group 104 Carrying-in side 105 Carrying-out side 106 Carrying-in side traverser 107 Carrying-out side traverser 108 Fixing rail 109 Leading formwork 110 Pusher device 111 Cushioning device 112 Mechanical lock 112a Roller 112 Case 113 Dharma stopper 114 out the mold 115 cylinder head 116 cylinder head 117 sandwiching method formwork 123 hydraulic cylinder of the clamp device 118 protrusion 120 formwork carriage axle 121 pusher side mold 122 less than feed

Claims (5)

  In the transfer method by the cylinder of the mold group which sandwiches the mold groups arranged in series between the pusher cylinder and the cushion cylinder and transports them intermittently by one mold or a pitch corresponding to a plurality of mold frames, A method for transporting a form group, which uses an electric cylinder or a hydraulic cylinder with an expansion / contraction position recognition function and a halfway stop function capable of arbitrarily changing the stop position of the form, and absorbs thermal expansion of the form form . After the stop position is recognized and stored by the expansion / contraction position recognition function on the effective end side of the cushion when conveyance of the pusher end is completed, in the transport process of the next cycle, 1 form is stored for the effective end stop position stored. The transfer of the group of molds according to claim 1, characterized in that the gap between the molds is kept constant by extending the rod of the cushion cylinder by the length of a minute and using it as the return end of the cushion cylinder. Method.   In a conveying apparatus using a cylinder of a mold group that sandwiches a series of mold groups arranged in series between a pusher cylinder and a cushion cylinder and conveys the mold group by a pitch corresponding to one mold frame or a plurality of mold frames, The form group group is transported by using an electric cylinder or hydraulic cylinder with an expansion / contraction position recognizing function and a halfway stop function capable of arbitrarily changing the stop position on the side, and absorbing thermal expansion of the mold form apparatus.   4. The apparatus for transporting a form group according to claim 3, wherein an encoder or a linear scale is used as means for expressing the expansion / contraction position recognition function. Stop position is not determined due to thermal expansion There is a clamp device that holds the mold frame upstream of the mold frame 1 of the mold frame conveyance device on the cushion side at any stop position, and is positioned on the carriage of the cushion side mold conveyance device. 4. The mold according to claim 3, further comprising: a mold positioning device for positioning the mold by sandwiching a part of the mold carriage in order to feed the mold of the feeding defect to a predetermined position on the carriage. Frame group transfer device.

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