CA1292939C - Device for changing the tools of a cutting press - Google Patents
Device for changing the tools of a cutting pressInfo
- Publication number
- CA1292939C CA1292939C CA000534526A CA534526A CA1292939C CA 1292939 C CA1292939 C CA 1292939C CA 000534526 A CA000534526 A CA 000534526A CA 534526 A CA534526 A CA 534526A CA 1292939 C CA1292939 C CA 1292939C
- Authority
- CA
- Canada
- Prior art keywords
- centering
- column
- lifting fork
- tools
- tool holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Abstract
ABSTRACT
A device for exchanging tools in a platen press includes a track (63) along which a column (15) provided with a lifting fork (37) is guided, the fork being coupled or uncoupled with a tool holder carriage (86). The coupling of the tool holder carri-age (86) is performed by hands (87 to 90). The lifting fork (37) has at its upper part a table 110 to be used in front of the platen press (1) and at each individual unit (4 to 6). The device is used to exchange of the tools in the units (4 to 6) of a platen press (1).
A device for exchanging tools in a platen press includes a track (63) along which a column (15) provided with a lifting fork (37) is guided, the fork being coupled or uncoupled with a tool holder carriage (86). The coupling of the tool holder carri-age (86) is performed by hands (87 to 90). The lifting fork (37) has at its upper part a table 110 to be used in front of the platen press (1) and at each individual unit (4 to 6). The device is used to exchange of the tools in the units (4 to 6) of a platen press (1).
Description
l~Z~39 The present invention refers to a device for changing the tools of a platen press comprising various successive operating units.
Known platen presses generally have a sheet feeding unit followed by a cutting unit, a waste ejection unit, a delivery unit for the cut blanks, and a delivery unit for the waste separated from the blanks.
To operate properly, the cutting unit, the waste ejection unit and the blank delivery unit have to be provided with approp-riate tools. These tools are either plates provided with cutting or creasing blades, counterparts for the cutting or creasing, fingers or pins for ejecting the waste, or punches or dies, the form of which corresponds to the form of the blank to be cut for the separation and the delivery o~ the blanks, These tools are usually quite large and heavy and consequently difficult to handle.
A platen press i5 a machine for performing various jobs, and therefore, in case of change of job, the operator has to change the tools mounted in the various units as required for the new job.
This is generally done by hand. Two persons at least are required for removing the tool to store it in a place where the replacement tool is taken from. This operation, to be repeated as often as the tools have to be changed, is quite tiresome forthe operator.
It also represents a relatively important loss of time and thus reduces the productivity of the press.
To facilitate the operator's work, the tools are removed from the cutting unit and stored in the various levels of a store 31g 1;2~Z939 previously shifted in front of the cutting unit. The store also receives the tools for the next job. When properly positioned in front of the location of the new tool in the machine, the level of the store can easily be shifted in its operating position. When not in use, the store can be retracted in the platform located in front of the machine.
This is a real improvement, but still has the drawback that it serves only the cutting unit. Elsewhere the replacement of the tools still requires at least two persons, as the retractable store cannot be duplicated by the erection of several successive stores in front of the other units of the machine, because of the lack of room and working security of the operator.
The aim of the present invention is thus to eliminate the aforementioned drawbacks and to allow the replacement by a sinyle person o all the tools used in the successive units of a platen press.
The invention provides handling device for exchanging tools of a cutting press, having at least two blank processing units arranged in a row, said device comprising: a column carrying a lifting fork adapted to be selectively coupled or uncoupled with a tool holder carriage, said lifting fork being controlled for movement vertically of said column by a telescopic hydraulic piston, and said lifting fork being provided at its upper part with a table, wherein said column is guided for movement along said row longitudinally of the cutting press on a track and can be precisely positioned in front of each unit of said press by a centering means.
The enclosed drawing shows one form of execution accord-lZ~2939 ing to the invention, where:
Figure 1 is a side view of a platen press provided with a hzmdling device, Figure 2 is a plan view of Figure 1, Figure 3 is an end view to an enlarged scale of the handling device, Figure 4 is a view in the direction of arrow A of Figure 3, Figure 5 is a view of the lifting fork of the handling device, Figure 6 is a plan view of Figure 5, Figure 7 is a plan view of a centering device, Figure 8 i5 a side view of Figure 7, Figure 9 shows the handling device provided with a tool holder càrriage, Figure 10 is a view in the direction of arrow B of Figure 9, Figure 11 is a tool holder carriage, Figure 12 is a view in the direction of arrow C of Figure 11, and Figure 13 is a detailed view of the tool holder carriage mounted on the lifting fork of the handling device.
Figure 1 shows the platen press 1 provided with a tool-handling device 2. The platen press 1 includes a feeding unit 3 followed by a cutting unit 4, a waste ejection unit 5, a delivery unit 6 for the cut blanks, a delivery unit 7 for the waste result-l~Z~39 ing form the separation of the blanks. The platen press 1 is also equipped with a platform for the operator's access to the various afore~mentioned units. The handling device 2 is aligned with the platform 8, as shown in Figure 2.
Figure 3 shows the handling device 2, which includes a sole 9 fixed in the floor 10 of the press room. The sole 9 via supports 11 and 12 carries horizontal guide rails 13 and 14. This assembly is in fact the track or rolling path 63 of the column 15. The column 15 can be shifted along the track 63, for instance by an endless chainor a telescopic hydraulic piston (not shown).
The column comprises a base 16 having on one of its vertical cheeks two rollers 18 and 19 engaging the guiding rail 14, and or its other vertical cheek two other rollers 20 and 21 engaging the guid-ing rail 13. To compensate for the load resulting from the weight of the lifting fork 37 and the members to be fixed on itj two lower rollers 22 and 23 are mounted on the upper face of the base 16 to roll against the face of the guide rail 14, and two lower rollers 24 and 25 roll against the face of the guiding rail 13.
The rollers 22, 23, 24 and 25 are rotatable on vertical axes.
The column is stabilized by two supporting rollers 26 and 27 mount-ed against the lateral face of the base 16. These rollers 26 and 27 are positioned in the plane of the rollers 20 and 21 and run on the upper edge of the guide rail 13.
The column 15, made of two legs formed of steel channels, is mounted by screws (not shown) on the upper portion of the base 16. The distance between the two legs 28 and 29 is defined by l~Z93~
crossbeams 30. Each leg 28 and 29 constitutes a rolling path 31 and 32 for guide rollers 33, 34, 35 and 36 of a lifting fork 37 (see Figure 4). The legs 28 and 29 are equipped with a sliding rail 38 (see Figure 3), engaged by guide rollers 39, 40, 41 and 42 also mounted on the lifting fork 37 on axes perpendicular to these of rollers 33 to 36. The lifting fork 37 is connected to the rod 43 of a telescopic hydraulic cylinder 44, serving to lift the fork from the lower position to an upper position (shown in broken lines in Figure 3). The telescopic hydraulic cylinder is driven by the motor 45 (see Figure 4) Figures 5 and 6 show a detail of the fork 37 constructed rom steel tubes to constitute a sort of bracket the vertical ele-ment of which comprises two tubes 46 and 47 connected with each other b~ crossbars 48 and 49 welded to make a rigid frame connected to a transverse tube 50 of the horizontal arm of the bracket by two connection pieces 51 and 52. The fork itself is made of two cantilevered beams 53 and 54 welded to the transverse tube 50. The bracket is strengthened by a welded gusset piece 56 between the tube 46 of its vertical arm and the beam 54 of its horizontal arm and another welded piece 55 between the tube 47 of its vertical arm and the beam 53 of its horizontal arm. A fixing piece 57 is also welded between the transverse tube 50 and the crossbar 49, to constitute a fixing point for the rod 43 of the hydraulic piston 44 (see Figures 3 and 4). The guiding rollers 33 to 36 are bolted against the faces 58 of the tubes 46 and 47. The guiding rollers 39 to 42 are mounted against the faces S9 of same tubes 46 and 47.
lZ~2939 Both beams 53 and 54 are provided with supporting plates 60 with a centering hole 61 also piercing the upper face of the beams 53 and 54, the function of which is described with reference to Figwre 13.
Figures 7 and 8 show a centering device 62 for precise positioning of the handling device 2 in front of the units of the platen press. The location of these centering devices 62 along the rolling path 63 of the column 15 is indicated by the references 64, 65, 66 and 67 of Figure 1. These locations ~64 to 67~ corres-pond to the axis of the units 4, 5 and 6, and of the column 15 when positioned under ref. 118 (see Figure 1). Each centering device 62 includes a slider 68 mounted on a plate 69 part of the column 15. This slider receives a centering sliding block 70, driven by a hydraulic cylinder 71 mounted in a bracket 72 by means of screws 73. This bracket 72 comprises two cheeks 74 and 75 with bosses 76 ànd 77.
The rod of the hydraulic cylinder 71 is connected to thecentering sliding block 70 by a wing 79 engaging into the fork 80 - mounted on the rod 78. To acilitate centering, one end of the centering sliding bloak 70 is provided with a roller 81 mounted in a fork 82 formed in the centering sliding block 70. This centering operation is facilitated by a roller 81 mounted in the fork 82.
This extremity receiving the roller 81 has two centering planes at 45 to co-operate with a aentering stop 83. mis centering stop 83 is made of a folded iron plate 84 welded on a sole 85 fixed by screws at the points 64 to 67 of the track 63.
12~Z939 8200-59 Figures 9 and 10 show the handling device 2 with its tool holder carriage 86. This tool holder carriage is driven by the lifting fork 37 by means of four hands 87, 88, 89 and 90. Des-cribed in detail in the Figures ll and 12, this tool holder carri-age is made of an angle-iron frame braced by two U-iron crosspieces 92 and 93. The frame 91 is provided with two wheels 94 and 95 mounted in a support 96 and two support feet 27 and 98 (see Figure 12). The crosspieces 92 and 93 are also equipped in their middle part with two centering pins 99 and 100. Cylindrical at their base 21, these pins become conical at their end. Above the frame 91 there is a store 101 centered on the cylinder of the centering pins 99 and 100. This store 101 is made of welded square tubes, with upper crosspieces 102 bearing the hands 87 to 90. In addi-tion, this store has slides 103 receiving the frames of the various tools to be in~talled or removed from the platen press 1. On our example, the tool holder carriage 86 includes a store 101 equipped with a cutting plate 104, a set of upper tools for the delivery of cut blanks 105, a set of lower tools 108 and a set of cutting tools 109. In this Figure, the tool holder carriage 86 is shown in its tool loading or tool removing position, i.e. either : when the tools are loaded in the press or when they are removed from the press to be changed. The beams 53 and 54 of the lifting fork are then engaged in the hands 87 and 90. In Figures 11 and 12 a preparing table 110 attached by screws to angle-irons 111 and 1-12 arranged on the upper face of the beams 53 and 54 of the lift-ing fork 37.
1~2939 8200-59 Figure 13 is a detailed view of ~he tool holder carriage 86, particularly of the store 101, on the beams 53 and 54 of the fork 37. The upper part of each hand 87 and 90 is provided with a centering pin 113 like the centering pins 99 and 100 of the frame 91. These centering pins 113 engage the centering holes 61 in the supporting plates 60 of the beams 53 and 54 of the lifting fork 37. The centering pin 113 is fixed to the hand 87, 90 with a screw 114. As shown, the hands 87 to 90 are fixed to the upper crosspieces 102 by screws 115. The angle-irons 111 and 112 bearing the table 110 a~e fixed to the beams 53 and 54 by screws 116 and this table 110 is fixed to the angle-irons by screws 117. Figure 13 shows in broken lines the lower position 118 of the beams 53 and 54 o~ the lifting ork 37 when the tool holder carriage 86 is to be loosened from it in order to mount a new carriage for a new job.
The described device operates in the following way:
While one job is being done in the press 1, the operator commands the preparation of the tools needed for the next job.
The new tools are loaded into the tool holder carriage 86 shown in Figures 11 and 12 which is shifted near the handling device 2.
Just before the end of the job, the operator positions the carri-age 86 in front of the first unit from where the tools are to be removed. As soon as the job is inished the operator loads the tools needed in the first unit into the store 101. Therefore he lifts the slides 103 in front of the tools by means of the fork 37 and successively shifts the column 15 to the positions 65 and 67, where it will be positioned by the centering devices 62. When the 1 Z ~ 2 9 39 8200-59 store 101 is ready, the operator shifts it back into its first unit 118 ~see Figure 1). There, the handling device 2 is also positioned by a centering device 62. The operator then lowers the tool holder carriage 86 until it reaches the floor, and the fork 37 shifts down as far as the position 118' (see Figures 11 and 13).
The centering device 62 is then retracted and the column 125 is shifted into the position 119 (see Figure 11) to free the beams 53 and 54 of the fork 37 from the hands 87 to 90. The tool holder carriage 86 now loaded with the withdrawn tools is then retracted and the previously prepared new carriage is shifted to its loading position.
The operator commands a movement sequence, to the fork 37 and to the column 15 that is the reverse of the shifting already used ~or removing the previous carriage. The centering of the new carriage is performed with the centering pins 113 when the beams 53 and 54 of the fork 37 are lifted. The tool holder carriage is then lited by the fork 37 and shifted successively in front of the units 4, 5 and 6 to load the tools for the new job. The centering is performed as shown before with the centering device 62. Once the tools are loaded, the operator can choose either to work with the table 110 or to remove the device from the working area of the machine. If he chooses to use the table 110 he can locate it at the desired height anywhere in the whole length of the machine in front of the units where an operation is required.
In order to give the operator the choice between several solutions the tool holder carriage can be shifted with or without 1 Z ~ 2 9 39 8200-59 its frame 91. There is a coupling system (not shown) of the store 101 and of the frame. The use of a device like the one des-cribed facilitates the job and reduces the time needed for replac-ing the whole equipment of a platen press. This device also reduces the risks connected with the handling and transport of large and heavy pieces of equipment, thus needing only one operator for all the operations. Another advantage is the fact that the assembly does not take up any room in the working area of the machine when it is out of use.
Known platen presses generally have a sheet feeding unit followed by a cutting unit, a waste ejection unit, a delivery unit for the cut blanks, and a delivery unit for the waste separated from the blanks.
To operate properly, the cutting unit, the waste ejection unit and the blank delivery unit have to be provided with approp-riate tools. These tools are either plates provided with cutting or creasing blades, counterparts for the cutting or creasing, fingers or pins for ejecting the waste, or punches or dies, the form of which corresponds to the form of the blank to be cut for the separation and the delivery o~ the blanks, These tools are usually quite large and heavy and consequently difficult to handle.
A platen press i5 a machine for performing various jobs, and therefore, in case of change of job, the operator has to change the tools mounted in the various units as required for the new job.
This is generally done by hand. Two persons at least are required for removing the tool to store it in a place where the replacement tool is taken from. This operation, to be repeated as often as the tools have to be changed, is quite tiresome forthe operator.
It also represents a relatively important loss of time and thus reduces the productivity of the press.
To facilitate the operator's work, the tools are removed from the cutting unit and stored in the various levels of a store 31g 1;2~Z939 previously shifted in front of the cutting unit. The store also receives the tools for the next job. When properly positioned in front of the location of the new tool in the machine, the level of the store can easily be shifted in its operating position. When not in use, the store can be retracted in the platform located in front of the machine.
This is a real improvement, but still has the drawback that it serves only the cutting unit. Elsewhere the replacement of the tools still requires at least two persons, as the retractable store cannot be duplicated by the erection of several successive stores in front of the other units of the machine, because of the lack of room and working security of the operator.
The aim of the present invention is thus to eliminate the aforementioned drawbacks and to allow the replacement by a sinyle person o all the tools used in the successive units of a platen press.
The invention provides handling device for exchanging tools of a cutting press, having at least two blank processing units arranged in a row, said device comprising: a column carrying a lifting fork adapted to be selectively coupled or uncoupled with a tool holder carriage, said lifting fork being controlled for movement vertically of said column by a telescopic hydraulic piston, and said lifting fork being provided at its upper part with a table, wherein said column is guided for movement along said row longitudinally of the cutting press on a track and can be precisely positioned in front of each unit of said press by a centering means.
The enclosed drawing shows one form of execution accord-lZ~2939 ing to the invention, where:
Figure 1 is a side view of a platen press provided with a hzmdling device, Figure 2 is a plan view of Figure 1, Figure 3 is an end view to an enlarged scale of the handling device, Figure 4 is a view in the direction of arrow A of Figure 3, Figure 5 is a view of the lifting fork of the handling device, Figure 6 is a plan view of Figure 5, Figure 7 is a plan view of a centering device, Figure 8 i5 a side view of Figure 7, Figure 9 shows the handling device provided with a tool holder càrriage, Figure 10 is a view in the direction of arrow B of Figure 9, Figure 11 is a tool holder carriage, Figure 12 is a view in the direction of arrow C of Figure 11, and Figure 13 is a detailed view of the tool holder carriage mounted on the lifting fork of the handling device.
Figure 1 shows the platen press 1 provided with a tool-handling device 2. The platen press 1 includes a feeding unit 3 followed by a cutting unit 4, a waste ejection unit 5, a delivery unit 6 for the cut blanks, a delivery unit 7 for the waste result-l~Z~39 ing form the separation of the blanks. The platen press 1 is also equipped with a platform for the operator's access to the various afore~mentioned units. The handling device 2 is aligned with the platform 8, as shown in Figure 2.
Figure 3 shows the handling device 2, which includes a sole 9 fixed in the floor 10 of the press room. The sole 9 via supports 11 and 12 carries horizontal guide rails 13 and 14. This assembly is in fact the track or rolling path 63 of the column 15. The column 15 can be shifted along the track 63, for instance by an endless chainor a telescopic hydraulic piston (not shown).
The column comprises a base 16 having on one of its vertical cheeks two rollers 18 and 19 engaging the guiding rail 14, and or its other vertical cheek two other rollers 20 and 21 engaging the guid-ing rail 13. To compensate for the load resulting from the weight of the lifting fork 37 and the members to be fixed on itj two lower rollers 22 and 23 are mounted on the upper face of the base 16 to roll against the face of the guide rail 14, and two lower rollers 24 and 25 roll against the face of the guiding rail 13.
The rollers 22, 23, 24 and 25 are rotatable on vertical axes.
The column is stabilized by two supporting rollers 26 and 27 mount-ed against the lateral face of the base 16. These rollers 26 and 27 are positioned in the plane of the rollers 20 and 21 and run on the upper edge of the guide rail 13.
The column 15, made of two legs formed of steel channels, is mounted by screws (not shown) on the upper portion of the base 16. The distance between the two legs 28 and 29 is defined by l~Z93~
crossbeams 30. Each leg 28 and 29 constitutes a rolling path 31 and 32 for guide rollers 33, 34, 35 and 36 of a lifting fork 37 (see Figure 4). The legs 28 and 29 are equipped with a sliding rail 38 (see Figure 3), engaged by guide rollers 39, 40, 41 and 42 also mounted on the lifting fork 37 on axes perpendicular to these of rollers 33 to 36. The lifting fork 37 is connected to the rod 43 of a telescopic hydraulic cylinder 44, serving to lift the fork from the lower position to an upper position (shown in broken lines in Figure 3). The telescopic hydraulic cylinder is driven by the motor 45 (see Figure 4) Figures 5 and 6 show a detail of the fork 37 constructed rom steel tubes to constitute a sort of bracket the vertical ele-ment of which comprises two tubes 46 and 47 connected with each other b~ crossbars 48 and 49 welded to make a rigid frame connected to a transverse tube 50 of the horizontal arm of the bracket by two connection pieces 51 and 52. The fork itself is made of two cantilevered beams 53 and 54 welded to the transverse tube 50. The bracket is strengthened by a welded gusset piece 56 between the tube 46 of its vertical arm and the beam 54 of its horizontal arm and another welded piece 55 between the tube 47 of its vertical arm and the beam 53 of its horizontal arm. A fixing piece 57 is also welded between the transverse tube 50 and the crossbar 49, to constitute a fixing point for the rod 43 of the hydraulic piston 44 (see Figures 3 and 4). The guiding rollers 33 to 36 are bolted against the faces 58 of the tubes 46 and 47. The guiding rollers 39 to 42 are mounted against the faces S9 of same tubes 46 and 47.
lZ~2939 Both beams 53 and 54 are provided with supporting plates 60 with a centering hole 61 also piercing the upper face of the beams 53 and 54, the function of which is described with reference to Figwre 13.
Figures 7 and 8 show a centering device 62 for precise positioning of the handling device 2 in front of the units of the platen press. The location of these centering devices 62 along the rolling path 63 of the column 15 is indicated by the references 64, 65, 66 and 67 of Figure 1. These locations ~64 to 67~ corres-pond to the axis of the units 4, 5 and 6, and of the column 15 when positioned under ref. 118 (see Figure 1). Each centering device 62 includes a slider 68 mounted on a plate 69 part of the column 15. This slider receives a centering sliding block 70, driven by a hydraulic cylinder 71 mounted in a bracket 72 by means of screws 73. This bracket 72 comprises two cheeks 74 and 75 with bosses 76 ànd 77.
The rod of the hydraulic cylinder 71 is connected to thecentering sliding block 70 by a wing 79 engaging into the fork 80 - mounted on the rod 78. To acilitate centering, one end of the centering sliding bloak 70 is provided with a roller 81 mounted in a fork 82 formed in the centering sliding block 70. This centering operation is facilitated by a roller 81 mounted in the fork 82.
This extremity receiving the roller 81 has two centering planes at 45 to co-operate with a aentering stop 83. mis centering stop 83 is made of a folded iron plate 84 welded on a sole 85 fixed by screws at the points 64 to 67 of the track 63.
12~Z939 8200-59 Figures 9 and 10 show the handling device 2 with its tool holder carriage 86. This tool holder carriage is driven by the lifting fork 37 by means of four hands 87, 88, 89 and 90. Des-cribed in detail in the Figures ll and 12, this tool holder carri-age is made of an angle-iron frame braced by two U-iron crosspieces 92 and 93. The frame 91 is provided with two wheels 94 and 95 mounted in a support 96 and two support feet 27 and 98 (see Figure 12). The crosspieces 92 and 93 are also equipped in their middle part with two centering pins 99 and 100. Cylindrical at their base 21, these pins become conical at their end. Above the frame 91 there is a store 101 centered on the cylinder of the centering pins 99 and 100. This store 101 is made of welded square tubes, with upper crosspieces 102 bearing the hands 87 to 90. In addi-tion, this store has slides 103 receiving the frames of the various tools to be in~talled or removed from the platen press 1. On our example, the tool holder carriage 86 includes a store 101 equipped with a cutting plate 104, a set of upper tools for the delivery of cut blanks 105, a set of lower tools 108 and a set of cutting tools 109. In this Figure, the tool holder carriage 86 is shown in its tool loading or tool removing position, i.e. either : when the tools are loaded in the press or when they are removed from the press to be changed. The beams 53 and 54 of the lifting fork are then engaged in the hands 87 and 90. In Figures 11 and 12 a preparing table 110 attached by screws to angle-irons 111 and 1-12 arranged on the upper face of the beams 53 and 54 of the lift-ing fork 37.
1~2939 8200-59 Figure 13 is a detailed view of ~he tool holder carriage 86, particularly of the store 101, on the beams 53 and 54 of the fork 37. The upper part of each hand 87 and 90 is provided with a centering pin 113 like the centering pins 99 and 100 of the frame 91. These centering pins 113 engage the centering holes 61 in the supporting plates 60 of the beams 53 and 54 of the lifting fork 37. The centering pin 113 is fixed to the hand 87, 90 with a screw 114. As shown, the hands 87 to 90 are fixed to the upper crosspieces 102 by screws 115. The angle-irons 111 and 112 bearing the table 110 a~e fixed to the beams 53 and 54 by screws 116 and this table 110 is fixed to the angle-irons by screws 117. Figure 13 shows in broken lines the lower position 118 of the beams 53 and 54 o~ the lifting ork 37 when the tool holder carriage 86 is to be loosened from it in order to mount a new carriage for a new job.
The described device operates in the following way:
While one job is being done in the press 1, the operator commands the preparation of the tools needed for the next job.
The new tools are loaded into the tool holder carriage 86 shown in Figures 11 and 12 which is shifted near the handling device 2.
Just before the end of the job, the operator positions the carri-age 86 in front of the first unit from where the tools are to be removed. As soon as the job is inished the operator loads the tools needed in the first unit into the store 101. Therefore he lifts the slides 103 in front of the tools by means of the fork 37 and successively shifts the column 15 to the positions 65 and 67, where it will be positioned by the centering devices 62. When the 1 Z ~ 2 9 39 8200-59 store 101 is ready, the operator shifts it back into its first unit 118 ~see Figure 1). There, the handling device 2 is also positioned by a centering device 62. The operator then lowers the tool holder carriage 86 until it reaches the floor, and the fork 37 shifts down as far as the position 118' (see Figures 11 and 13).
The centering device 62 is then retracted and the column 125 is shifted into the position 119 (see Figure 11) to free the beams 53 and 54 of the fork 37 from the hands 87 to 90. The tool holder carriage 86 now loaded with the withdrawn tools is then retracted and the previously prepared new carriage is shifted to its loading position.
The operator commands a movement sequence, to the fork 37 and to the column 15 that is the reverse of the shifting already used ~or removing the previous carriage. The centering of the new carriage is performed with the centering pins 113 when the beams 53 and 54 of the fork 37 are lifted. The tool holder carriage is then lited by the fork 37 and shifted successively in front of the units 4, 5 and 6 to load the tools for the new job. The centering is performed as shown before with the centering device 62. Once the tools are loaded, the operator can choose either to work with the table 110 or to remove the device from the working area of the machine. If he chooses to use the table 110 he can locate it at the desired height anywhere in the whole length of the machine in front of the units where an operation is required.
In order to give the operator the choice between several solutions the tool holder carriage can be shifted with or without 1 Z ~ 2 9 39 8200-59 its frame 91. There is a coupling system (not shown) of the store 101 and of the frame. The use of a device like the one des-cribed facilitates the job and reduces the time needed for replac-ing the whole equipment of a platen press. This device also reduces the risks connected with the handling and transport of large and heavy pieces of equipment, thus needing only one operator for all the operations. Another advantage is the fact that the assembly does not take up any room in the working area of the machine when it is out of use.
Claims (8)
1. Handling device for exchanging tools of a cutting press, having at least two blank processing units arranged in a row, said device comprising: a column carrying a lifting fork adapted to be selectively coupled or uncoupled with a tool holder carriage, said lifting fork being controlled for movement vertically of said column by a telescopic hydraulic piston, and said lifting fork being provided at its upper part with a table, wherein said column is guided for movement along said row longitudinally of the cutting press on a track and can be precisely positioned in front of each unit of said press by a centering means.
2. A device according to claim 1 wherein the track comprises a sole carrying a longitudinal guide rail, said track being provided with centering stops aligned with the axis of each said unit, said column being provided at its lower part with a centering device engagable with said centering stops.
3. A device according to claim 1 wherein the column comprises two legs connected by crossbars said legs providing rolling and guiding paths for the lifting fork.
4. A device according to claim 3 wherein the lifting fork is made of a bracket with a vertical arm guided by rollers in said legs and a horizontal arm which is made of two beams comprising supporting plates with centering holes therein.
5. A device according to claim 4 wherein the centering holes receive centering pins mounted on hands fixed to crosspieces of the tool holder carriage.
6. A device according to claim 4 wherein the table is mounted on the beams of the lifting fork by means of angle irons and screws.
7. A device according to claim 1 wherein the centering device comprises a roller mounted in a centering slider to engage in the centering stop for the centering operation.
8. A device according to claim 1, wherein the tool holder carriage is made of a frame on which a store with slides for receiving the set of tools is centered by means of centering pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000534526A CA1292939C (en) | 1987-04-13 | 1987-04-13 | Device for changing the tools of a cutting press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000534526A CA1292939C (en) | 1987-04-13 | 1987-04-13 | Device for changing the tools of a cutting press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1292939C true CA1292939C (en) | 1991-12-10 |
Family
ID=4135416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000534526A Expired - Lifetime CA1292939C (en) | 1987-04-13 | 1987-04-13 | Device for changing the tools of a cutting press |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1292939C (en) |
-
1987
- 1987-04-13 CA CA000534526A patent/CA1292939C/en not_active Expired - Lifetime
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