CA1231316A - Method and device for handling ends for tins - Google Patents
Method and device for handling ends for tinsInfo
- Publication number
- CA1231316A CA1231316A CA000476044A CA476044A CA1231316A CA 1231316 A CA1231316 A CA 1231316A CA 000476044 A CA000476044 A CA 000476044A CA 476044 A CA476044 A CA 476044A CA 1231316 A CA1231316 A CA 1231316A
- Authority
- CA
- Canada
- Prior art keywords
- stack
- unpacking
- space
- transport means
- ropes
- 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.)
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- Control And Other Processes For Unpacking Of Materials (AREA)
Abstract
A B S T R A C T
Method and device for handling ends for tins.
In handling ends for tins, stacks of ends are supplied and joined in a snake of ends which is transported with a speed with which the ends are processed by a closing device in a manner such that disturbance due to ends falling over is avoided by using three endless ropes.
Method and device for handling ends for tins.
In handling ends for tins, stacks of ends are supplied and joined in a snake of ends which is transported with a speed with which the ends are processed by a closing device in a manner such that disturbance due to ends falling over is avoided by using three endless ropes.
Description
- l - 21766-444 lo Al The invention relates to a method of handling round, flat, substantially identical ends for tins, in which packed stacks of ends are supplied to an unpacking space and the sheet forming the packing is cut up by cutting means and peeled from the stack whilst the stack is rotated about its longitudinal axis.
Such a method is known from US-A-4390135. With this prior art method the packed stacks are laid in the unpacking space.
The packing is probably cut by hand in longitudinal direction at its top. After the stack has been automatically peeled the stack of ends is removed from the unpacking space, probably also by hand.
The aim of the invention is to provide a method which can automatically be applied with a simple, short device. In this aim the invention provides a method of above mentioned kind in which the packed stack is moved transversely of its direction of length into the unpacking space and the unpacked stack is removed in its axial direction from the unpacking space. The invention also provides a device for handling round, flat, substantially identical ends for tins, comprising a plurality of rotatable journal led rollers bounding an unpacking space for receiving a stack ox ends packed in a sheet, for example of paper, said unpacking space being furthermore bound by cutting means for cutting up the sheet, characterized by transport means for introducing the packed stack into the unpacking space in a transverse direction thereof and by removing transport means moving the unpacked stack of ends in an axial direction out of the unpacking space.
It is noted that an automatic method and device for unpacking stacks of ends is disclosed in GO 2010 771, wherein ED
21766-~
each time a packed stack of ends:
is axially supplied on a conveying belt;
is transversely transverse from the belt into a cutting space;
and is transferred in axial direction from the cutting space into a peeling space;
and wherein the unpacked stack is transferred trays-tersely from the storage space into a delivery space;
and in which this stack is finally axially delivered from the delivery space.
This method requires an expensive device which cannot be constructed as a compact embodiment.
In order to treat the ends free of disturbance, whilst packed stacks of undefined and varying length are supplied, the invention provides a device wherein a stack supply device for supplying stacks of ends -to -the transport means comprises:
guide means bounding an unpacking space and extending in the axial direction of the transport means;
a retaining support located at the end of the unpacking place near the transport means, and a pusher located at the end of the unpacking space remote from the transport means and that the retaining support and the pusher are each movable in the axial direction of the transport means.
The invention will now be described more fully by way of example only with reference to the accompanying drawings wherein:
Figure 1 is a drastically simplified, schematic I
-- - pa - 21766-44~
I
perspective view of a complex machine comprising a device embody-in the invention, Figure 2 is a sectional view II-II in Figure 1, Figure 3 is a sectional view III-III in Figure 1, Figure 4 is a perspective view of a further embodiment of a combined machine in accordance with the invention, Figure 5 is a further detailed, fragmentary, perspective view of detail V of Figure 4 on an enlarged scale, Figure 6 is a schematic plan view of the detail of Figure 5, Figure 7 is a cross sectional view VII-VII of Figure 5, Figure 8 is a cross-sectional view VIII-VIII in Figure 5, Figure 9 is on an enlarged scale detail IX of Figure 1, Jo Figure 10 is a cross-sectional view of a stack supply device of a further device embodying the invention, Figure 11 is on an enlarged scale the stack unpacking device of Figure 10, Figures 12 to 14 and 16 to 19 are fragmentary longitudinal views of a stack supply device to be arranged at the inlet end of the transport device embodying the invention in consecutive operational positions, Figure 15 is a cross-sectional view of the stack unpacking device of Fig. 10 to be arranged at -the input end of the transport device embodying the invention, Figs. 20 and 21 schematic views of the inlet end of the transport device of Fig. 1 embodying the invention in two 5 different positions, Fig. 22 a fragmentary side elevation of an inlet end of a further transport device embodying the invention, with which the stack supply device of Figs. 10 tot 19 can be connected, Figs. 23 and 24 schematic sectional views taken on the lines XXIII-XXIII and XIV-XIV respectively in Fig. 22 and Fig. 25 a preferred variant of the sectional view of Fig. 23 on an enlarged scale.
Fig. 1 shows a combined machine 1 for introducing stacks 154 of ends 3 to the closing devices 2, which comprise means for shutting tins by a supplied end 3.
The stacks 4 of ends 3 are successively supplied in a stack supply device 89 in the direction of the arrow 5 by means not shown in Fig. 1 to a guide shoot 6 to which is agenda a reciprocatory pestle 7 for supplying a stack 4 of ends 3 alternatively from transport devices 8 and 9 according to the invention. For this alternating supply the inlet ends of the transport devices 8, 9 are coupled and movable in the direction of the arrow 10 so that alternately the inlet end off the device 8 and that of the device 9 are located in line with the guide shoot 6, which is illustrated in Figs. 2, 20 and 21.
A stationary frame 30 carries two brackets 28 pivoted thereto with the aid of shafts 87 for the devices 8 and 9 respectively. These brackets 28 and 29 are pivot able, as shown in Figs. 20 and 21, by means of a hydraulic ram 88 between two positions in which the devices 8 and 9 respectively adjoin the guide shoot 6. Thus a stack 4 of ends 3 is alternately supplied to the devices 8 and 9. The brackets 28 carry rollers disunited by 14, about which endless ropes 11, 12, 13 are passing. A stack 4 of ends 3 is indicated by a broken circle.
The devices 8 and 9 have similar structures. Therefore, only the device 8 will be further described.
This device 8 comprises a transport member having the I
three endless ropes 11 ,12,13. A motor 15 with a transmission 16 serves to drive the ropes 11, 12, 13 with equal speeds v2.
The operative parts ox the two lower ropes 11, 12 and the upper rope 13 are parallel and are spaced apart by distances 5 such that these operative parts together are capable of no-twining the end 3 to be transported by clamping and of transporting them. The ropes 11, 12, 13 are adjoined through a transition zone 17 three further endless ropes 18, 19, 20.
As shown in Fig. 3 the frame 30 carries at the transition 10 zone 17 the rollers 14, about which are passed the endless ropes 11, 12 13 and the ropes 18, 19, 20. A motor 24 serves to drive the ropes 18, 19, 20 with a speed V3, which is about half the speed v2 of the ropes 11, 12, 13. In order to ensure that the magazine 22 always contains the same stock 15 of ends 3, a monitoring member 25 is coupled through a connection indicated by a dot-and-dash line to the motor 24 for control. The speed v1 of the ropes 18, 19, 20 is a variable speed determined by the working rate of the closing device 2 and may be 5 my a minute. If the speed v2 of the 20 ropes 11, 12, 13 is equal to 10 ms/sec, the stacks 4 of ends 3 are axially introduced in the ropes 11, 12, 13 at a rate of, for example, 15 ms/sec, at least a higher rate 43 than the speed v2 of the ropes 11, 12, 13, because stops introduced stacks 4 are laced at the end 149 of a continuous end snake 148 (Fig. 9). The last end 3 of this end snake 148 is held safely and stably in its adjoining position because the ropes 11, 12, 13 exert a propelling effect at three places of the circumference of the end pa in the direction of the speed v2, since the speed of said end pa 30 is equal to the lower speed V1~ It is ensured that a next stack 4 of ends 3 is laced to the end 149 of the end snake 148 before this end 149 has reached the transition zone 17 to a next set of ropes 18, 19, 20.
Turing the introduction of a stack 4 the foremost cover 35 3b is exposed along its circumference to a braking force exerted by the ropes 11, 12, 13 and pushing this end 3b towards the stack 4 so that the end 3b cannot fall off.
jig. 4 shows a complex machine 32. It comprises a feeding device 33 for supplying stacks 38 of ends 3 to ropes 35, I I
36, 37 driven by a motor 34 with a speed v2. These ends 3 are waken over via a transition zone 39 by three further transport ropes 40, 41, 42 after which the ends are guided around a bend 43 by a guide disc 62.
Along two further bends 44, 45 the ends are guided further to a closing device 46, above which is located the magazine 47 for the ends 3, the contents of which are maintained between two extreme values by moans of two monk-ions 48, 49. The latter control a motor 50, which drives 10 the ropes 40, 41, 42 with a variable speed V1.
Fig. 5 shows in further detail the structure of the bend 45, which is similar to that of the bends 43 and 44.
It will be obvious that owing to the presence of a bend the angular speed of ropes being in different positions 15 relative to the centre of rotation has a value such that transported ends 3 can be in an inclined position after having passed around the bend. In order to avoid this, the angular speed of the ropes in the bend must everywhere be the same, which implies that ropes lying further outwards 20 should have a higher linear speed Two lower ropes 52, 53 and an upper rope 54 transport covers 3 along the bend 45. The rope 52 is guided by its active part by a guide 55, the rope 53 by a guide 56 and the rope 54 by a guide 57 formed, as is shown more in detail in Fig. 8, by a U-shaped 25 profile beam I in which is located a U-shaped beam 59 movable from and towards the transport space i.e. the space bounded by the active parts of the ropes 52, 53, 54. Setting of said beam can be carried out by means of screws 60. They may also be used for adjusting the spring pressure exerted 30 by the rope 54 on the transported ends. It is noted here that the ropes 52, 53 shown in Fig. 5 have no freedom of movement so that it is necessary to use separate spring means for transporting the ends in a clamped state. The rope 52 is guided in the bend by a guide disc 61. The guide disc 35 61 has for this purpose on the underside a continuous groove 63. On the corresponding top side the guide disc 61 has a rope 64 formed by a fixed, circulating belt. In the zone in which the belt 64 transports the ends 3 in the bend 45 the rope 54 is put out of operation and guided straight on to I
follow the bend around a guide roller 65. Locally the effect of -the rope 54 is taken over by a rope 66 arranged on a driven toothed belt 67.
Fig. 6 shows -the construction described in an elevation Al 5 view in which the take-over of the functions of the respect live ropes is shown more clearly. From this Figure it appears how the toothed belt 67 is guided by its active part i.e. the part facing the guide disc 62 by an arcuate guide 68.
Fig. 8 shows the construction described with reference 10 to Fig. 5 on the inlet side of the bend 45.
The stack supply device 91 of Figs. 10 to 19 comprises as a variant of the stack supply device 89 three rollers 92, 93 and 94 forming guide means for a stack 4 of ends 3 and extending mainly in the axial direction of the set of ropes 15 211, 212, 213 of the front end of the transport device 210 of Figs. 20 tot 25. The stack supply device 91 has a stock holder 95 for stacks 4 of ends 3 packed in sheets, for example, of paper, a bottom of which slopes downwards to a chain conveyor 97 bounding the stock holder and having 20 chains 103 passed around sprockets 102 and having transverse bars 98 and a guide plate 99.
Between the transverse bars 98 there are stack receiving spaces 100 so that when the chain conveyor 97 is driven in the direction of the arrow 101 a stack 4 of ends 3 is 25 received in each space 100 and then supplied rolling along the guide plate 99 to an unpacking device 104, which comprises three rollers 92, 93 and 94. The roller 93 co-operates with a roller 107 as a pair for conducting away a sheet 108. The rubber-coated rollers 107 and 93 are driven by a motor 110 30 via a chain drive 109 so that the rollers 93 and 107 and also the rollers 92 and 94 indirectly driven via the stack 4 rotate in the direction indicated by arrows 111.
The unpacking device 104 comprises a knife holder 112, which is urged by means of a leaf spring 113 in the direction 35 of the arrow 114 towards the stack 4 until a hard steel stop 115 fastened to the knife holder 112 strikes the stack 4 in order to hold a knife 116 of the knife holder 112 along the stack 4 so that the sheet 108 forming the packing is cut off the stack 4, however, without damaging the ends. The knife holder 112 is ad~ustably fastened to a frame 11~ by means of set screws 117 and fastening bolts 120 lying in elongate holes 119. The stop 115 co-operating with the roller 93 to form a bulging part 143 in which the preferably milled knife 5 116 can start cutting.
The rollers 92, 93 and 103 are rotatable journal led in the frame 121 comprising guide bars 122 for guiding a support 123 in the axial direction of ropes 211 to 213. An air Solon-don 124 moves the support 123 in the direction of the arrow 10 125 to and fro. The support 123 has an arm 127 that can be turned by means of a cylinder 126 and that carries at the lower end a retaining support 128. The rope 213 is arranged centrally on the underside and the ropes 211 and 212 are arranged slightly above the middle of the stack 4 (see Fig.
15 23), so that the retaining support 128 can engage from above the stack 4 between the ropes 211 and 212. The ropes 211 and 212 are each guided in a rope guide 129, which is arranged with springs 130 in a U-profile. As shown in Fig. 25 these springs are leaf springs. Thus the stuck 4 is stably enclosed 20 between the ropes 211, 212 and 213.
In order to enhance the safety against falling over of the covers 3 the transport space between the ropes 211, 212, 213 is bounded on the underside by guide plates 218, which are outwardly and upwardly directed at an angle of 60 to 25 the horizon When ends 3 of a different diameter are treated, the two ropes 211 and 212 are displaced by displacing the associated U-profiles 131 connected with brackets 219 by means of setting means with respect to a frame 220, for example, into the positions indicated by broken lines. The setting 30 means comprise fastening plates 221 and 222 being at an angle of preferably 4830' to the horizon and being mutually displaceable by means of bolts 223 lying in slots in the direction of the arrows 224.
The length of the rollers 92, 93~ 94 is such that stacks 35 4 of great and different lengths can be processed. The pestle l32 is fastened to a support 133, which is reciprocated by means of a motor 134 driving a screw spindle 135 in the axial direction of the ropes 211 to 213. As an alternative the pestle 132 may be reciprocated by means of a pneumatic cylinder, pro-. .
lo fireball a known air cylinder, the piston of which has a fastening arm extending through a longitudinal slot of the cylinder, whilst means are provided for sealing the cylinder slot.
The control of -the unpacking device 104 is illustrated in successive stages in Figs. 12 to 19.
In the position shown in Fig. 12 the retaining support 128 and the pestle 132 are located at the two ends of the us-packing space and the roller 94 is in the deflected position 10 indicated by broken lines in Fig. 10 so that a packed stack 4 can roll between the rollers 92, 93 and 94 in the affection of the arrow 136. Roy pestle 132 then moves into the position shown in Fig. 13 in which the packed stack 4 is urged against the retaining support 128, after which the pestle 132 is 15 moved back over a small distance of, for example, 5 mums twig.
14) in order to leave some clearance at both ends of the stack 4 for releasing the sheet 108.
As shown in Fig. 15 the stack 4 is rotated by driving the rollers 92, 93 and 107, whilst the knife 116 cuts up the 20 sheet 108 and peels it off the stack 4. The sheet 108 is con-dueled away between the rollers 93 and 107.
As shown in Fig. 16 the unpacked stack 4 is driven by the pestle 132 with the above mentioned speed V3, which exceeds the speed v2 of the ropes 211, 212, 213, the pestle 25 pushing in front of it the retaining support 12~ together with the support 123, whilst the stack 4 is clamped tight. The air cylinder 124 then operates as a counter-pressure spring. When the stack is engaged over a sufficient length between the ropes 211 to 213, so that these ropes produce sufficient 30 counter-pressure, the retaining support 128 is turned away by means of the cylinder 126 from between the ropes (Fig. 17).
Fig. 18 shows that the whole stack 4 is located between the ropes 211 to 213~ Then the pestle 132 and the retaining support 128 move back to their initial positions (Fig. 19), 35 whilst the stack 4 is further transported by the ropes 211 to 213. Ryan a next packed stack 4 of Fig. 12 can drop in be-tweet the rollers.
Fig. 22 shows that the ropes 211 to 213 can be commonly driven with the same speed v2 by a motor 137 having pulleys 139 mounted on a common horizontal shaft 138~ The ropes 211 to 213 are all positioned in a vertical plane and passed along guide discs 140 and stretching discs 141~
Such a method is known from US-A-4390135. With this prior art method the packed stacks are laid in the unpacking space.
The packing is probably cut by hand in longitudinal direction at its top. After the stack has been automatically peeled the stack of ends is removed from the unpacking space, probably also by hand.
The aim of the invention is to provide a method which can automatically be applied with a simple, short device. In this aim the invention provides a method of above mentioned kind in which the packed stack is moved transversely of its direction of length into the unpacking space and the unpacked stack is removed in its axial direction from the unpacking space. The invention also provides a device for handling round, flat, substantially identical ends for tins, comprising a plurality of rotatable journal led rollers bounding an unpacking space for receiving a stack ox ends packed in a sheet, for example of paper, said unpacking space being furthermore bound by cutting means for cutting up the sheet, characterized by transport means for introducing the packed stack into the unpacking space in a transverse direction thereof and by removing transport means moving the unpacked stack of ends in an axial direction out of the unpacking space.
It is noted that an automatic method and device for unpacking stacks of ends is disclosed in GO 2010 771, wherein ED
21766-~
each time a packed stack of ends:
is axially supplied on a conveying belt;
is transversely transverse from the belt into a cutting space;
and is transferred in axial direction from the cutting space into a peeling space;
and wherein the unpacked stack is transferred trays-tersely from the storage space into a delivery space;
and in which this stack is finally axially delivered from the delivery space.
This method requires an expensive device which cannot be constructed as a compact embodiment.
In order to treat the ends free of disturbance, whilst packed stacks of undefined and varying length are supplied, the invention provides a device wherein a stack supply device for supplying stacks of ends -to -the transport means comprises:
guide means bounding an unpacking space and extending in the axial direction of the transport means;
a retaining support located at the end of the unpacking place near the transport means, and a pusher located at the end of the unpacking space remote from the transport means and that the retaining support and the pusher are each movable in the axial direction of the transport means.
The invention will now be described more fully by way of example only with reference to the accompanying drawings wherein:
Figure 1 is a drastically simplified, schematic I
-- - pa - 21766-44~
I
perspective view of a complex machine comprising a device embody-in the invention, Figure 2 is a sectional view II-II in Figure 1, Figure 3 is a sectional view III-III in Figure 1, Figure 4 is a perspective view of a further embodiment of a combined machine in accordance with the invention, Figure 5 is a further detailed, fragmentary, perspective view of detail V of Figure 4 on an enlarged scale, Figure 6 is a schematic plan view of the detail of Figure 5, Figure 7 is a cross sectional view VII-VII of Figure 5, Figure 8 is a cross-sectional view VIII-VIII in Figure 5, Figure 9 is on an enlarged scale detail IX of Figure 1, Jo Figure 10 is a cross-sectional view of a stack supply device of a further device embodying the invention, Figure 11 is on an enlarged scale the stack unpacking device of Figure 10, Figures 12 to 14 and 16 to 19 are fragmentary longitudinal views of a stack supply device to be arranged at the inlet end of the transport device embodying the invention in consecutive operational positions, Figure 15 is a cross-sectional view of the stack unpacking device of Fig. 10 to be arranged at -the input end of the transport device embodying the invention, Figs. 20 and 21 schematic views of the inlet end of the transport device of Fig. 1 embodying the invention in two 5 different positions, Fig. 22 a fragmentary side elevation of an inlet end of a further transport device embodying the invention, with which the stack supply device of Figs. 10 tot 19 can be connected, Figs. 23 and 24 schematic sectional views taken on the lines XXIII-XXIII and XIV-XIV respectively in Fig. 22 and Fig. 25 a preferred variant of the sectional view of Fig. 23 on an enlarged scale.
Fig. 1 shows a combined machine 1 for introducing stacks 154 of ends 3 to the closing devices 2, which comprise means for shutting tins by a supplied end 3.
The stacks 4 of ends 3 are successively supplied in a stack supply device 89 in the direction of the arrow 5 by means not shown in Fig. 1 to a guide shoot 6 to which is agenda a reciprocatory pestle 7 for supplying a stack 4 of ends 3 alternatively from transport devices 8 and 9 according to the invention. For this alternating supply the inlet ends of the transport devices 8, 9 are coupled and movable in the direction of the arrow 10 so that alternately the inlet end off the device 8 and that of the device 9 are located in line with the guide shoot 6, which is illustrated in Figs. 2, 20 and 21.
A stationary frame 30 carries two brackets 28 pivoted thereto with the aid of shafts 87 for the devices 8 and 9 respectively. These brackets 28 and 29 are pivot able, as shown in Figs. 20 and 21, by means of a hydraulic ram 88 between two positions in which the devices 8 and 9 respectively adjoin the guide shoot 6. Thus a stack 4 of ends 3 is alternately supplied to the devices 8 and 9. The brackets 28 carry rollers disunited by 14, about which endless ropes 11, 12, 13 are passing. A stack 4 of ends 3 is indicated by a broken circle.
The devices 8 and 9 have similar structures. Therefore, only the device 8 will be further described.
This device 8 comprises a transport member having the I
three endless ropes 11 ,12,13. A motor 15 with a transmission 16 serves to drive the ropes 11, 12, 13 with equal speeds v2.
The operative parts ox the two lower ropes 11, 12 and the upper rope 13 are parallel and are spaced apart by distances 5 such that these operative parts together are capable of no-twining the end 3 to be transported by clamping and of transporting them. The ropes 11, 12, 13 are adjoined through a transition zone 17 three further endless ropes 18, 19, 20.
As shown in Fig. 3 the frame 30 carries at the transition 10 zone 17 the rollers 14, about which are passed the endless ropes 11, 12 13 and the ropes 18, 19, 20. A motor 24 serves to drive the ropes 18, 19, 20 with a speed V3, which is about half the speed v2 of the ropes 11, 12, 13. In order to ensure that the magazine 22 always contains the same stock 15 of ends 3, a monitoring member 25 is coupled through a connection indicated by a dot-and-dash line to the motor 24 for control. The speed v1 of the ropes 18, 19, 20 is a variable speed determined by the working rate of the closing device 2 and may be 5 my a minute. If the speed v2 of the 20 ropes 11, 12, 13 is equal to 10 ms/sec, the stacks 4 of ends 3 are axially introduced in the ropes 11, 12, 13 at a rate of, for example, 15 ms/sec, at least a higher rate 43 than the speed v2 of the ropes 11, 12, 13, because stops introduced stacks 4 are laced at the end 149 of a continuous end snake 148 (Fig. 9). The last end 3 of this end snake 148 is held safely and stably in its adjoining position because the ropes 11, 12, 13 exert a propelling effect at three places of the circumference of the end pa in the direction of the speed v2, since the speed of said end pa 30 is equal to the lower speed V1~ It is ensured that a next stack 4 of ends 3 is laced to the end 149 of the end snake 148 before this end 149 has reached the transition zone 17 to a next set of ropes 18, 19, 20.
Turing the introduction of a stack 4 the foremost cover 35 3b is exposed along its circumference to a braking force exerted by the ropes 11, 12, 13 and pushing this end 3b towards the stack 4 so that the end 3b cannot fall off.
jig. 4 shows a complex machine 32. It comprises a feeding device 33 for supplying stacks 38 of ends 3 to ropes 35, I I
36, 37 driven by a motor 34 with a speed v2. These ends 3 are waken over via a transition zone 39 by three further transport ropes 40, 41, 42 after which the ends are guided around a bend 43 by a guide disc 62.
Along two further bends 44, 45 the ends are guided further to a closing device 46, above which is located the magazine 47 for the ends 3, the contents of which are maintained between two extreme values by moans of two monk-ions 48, 49. The latter control a motor 50, which drives 10 the ropes 40, 41, 42 with a variable speed V1.
Fig. 5 shows in further detail the structure of the bend 45, which is similar to that of the bends 43 and 44.
It will be obvious that owing to the presence of a bend the angular speed of ropes being in different positions 15 relative to the centre of rotation has a value such that transported ends 3 can be in an inclined position after having passed around the bend. In order to avoid this, the angular speed of the ropes in the bend must everywhere be the same, which implies that ropes lying further outwards 20 should have a higher linear speed Two lower ropes 52, 53 and an upper rope 54 transport covers 3 along the bend 45. The rope 52 is guided by its active part by a guide 55, the rope 53 by a guide 56 and the rope 54 by a guide 57 formed, as is shown more in detail in Fig. 8, by a U-shaped 25 profile beam I in which is located a U-shaped beam 59 movable from and towards the transport space i.e. the space bounded by the active parts of the ropes 52, 53, 54. Setting of said beam can be carried out by means of screws 60. They may also be used for adjusting the spring pressure exerted 30 by the rope 54 on the transported ends. It is noted here that the ropes 52, 53 shown in Fig. 5 have no freedom of movement so that it is necessary to use separate spring means for transporting the ends in a clamped state. The rope 52 is guided in the bend by a guide disc 61. The guide disc 35 61 has for this purpose on the underside a continuous groove 63. On the corresponding top side the guide disc 61 has a rope 64 formed by a fixed, circulating belt. In the zone in which the belt 64 transports the ends 3 in the bend 45 the rope 54 is put out of operation and guided straight on to I
follow the bend around a guide roller 65. Locally the effect of -the rope 54 is taken over by a rope 66 arranged on a driven toothed belt 67.
Fig. 6 shows -the construction described in an elevation Al 5 view in which the take-over of the functions of the respect live ropes is shown more clearly. From this Figure it appears how the toothed belt 67 is guided by its active part i.e. the part facing the guide disc 62 by an arcuate guide 68.
Fig. 8 shows the construction described with reference 10 to Fig. 5 on the inlet side of the bend 45.
The stack supply device 91 of Figs. 10 to 19 comprises as a variant of the stack supply device 89 three rollers 92, 93 and 94 forming guide means for a stack 4 of ends 3 and extending mainly in the axial direction of the set of ropes 15 211, 212, 213 of the front end of the transport device 210 of Figs. 20 tot 25. The stack supply device 91 has a stock holder 95 for stacks 4 of ends 3 packed in sheets, for example, of paper, a bottom of which slopes downwards to a chain conveyor 97 bounding the stock holder and having 20 chains 103 passed around sprockets 102 and having transverse bars 98 and a guide plate 99.
Between the transverse bars 98 there are stack receiving spaces 100 so that when the chain conveyor 97 is driven in the direction of the arrow 101 a stack 4 of ends 3 is 25 received in each space 100 and then supplied rolling along the guide plate 99 to an unpacking device 104, which comprises three rollers 92, 93 and 94. The roller 93 co-operates with a roller 107 as a pair for conducting away a sheet 108. The rubber-coated rollers 107 and 93 are driven by a motor 110 30 via a chain drive 109 so that the rollers 93 and 107 and also the rollers 92 and 94 indirectly driven via the stack 4 rotate in the direction indicated by arrows 111.
The unpacking device 104 comprises a knife holder 112, which is urged by means of a leaf spring 113 in the direction 35 of the arrow 114 towards the stack 4 until a hard steel stop 115 fastened to the knife holder 112 strikes the stack 4 in order to hold a knife 116 of the knife holder 112 along the stack 4 so that the sheet 108 forming the packing is cut off the stack 4, however, without damaging the ends. The knife holder 112 is ad~ustably fastened to a frame 11~ by means of set screws 117 and fastening bolts 120 lying in elongate holes 119. The stop 115 co-operating with the roller 93 to form a bulging part 143 in which the preferably milled knife 5 116 can start cutting.
The rollers 92, 93 and 103 are rotatable journal led in the frame 121 comprising guide bars 122 for guiding a support 123 in the axial direction of ropes 211 to 213. An air Solon-don 124 moves the support 123 in the direction of the arrow 10 125 to and fro. The support 123 has an arm 127 that can be turned by means of a cylinder 126 and that carries at the lower end a retaining support 128. The rope 213 is arranged centrally on the underside and the ropes 211 and 212 are arranged slightly above the middle of the stack 4 (see Fig.
15 23), so that the retaining support 128 can engage from above the stack 4 between the ropes 211 and 212. The ropes 211 and 212 are each guided in a rope guide 129, which is arranged with springs 130 in a U-profile. As shown in Fig. 25 these springs are leaf springs. Thus the stuck 4 is stably enclosed 20 between the ropes 211, 212 and 213.
In order to enhance the safety against falling over of the covers 3 the transport space between the ropes 211, 212, 213 is bounded on the underside by guide plates 218, which are outwardly and upwardly directed at an angle of 60 to 25 the horizon When ends 3 of a different diameter are treated, the two ropes 211 and 212 are displaced by displacing the associated U-profiles 131 connected with brackets 219 by means of setting means with respect to a frame 220, for example, into the positions indicated by broken lines. The setting 30 means comprise fastening plates 221 and 222 being at an angle of preferably 4830' to the horizon and being mutually displaceable by means of bolts 223 lying in slots in the direction of the arrows 224.
The length of the rollers 92, 93~ 94 is such that stacks 35 4 of great and different lengths can be processed. The pestle l32 is fastened to a support 133, which is reciprocated by means of a motor 134 driving a screw spindle 135 in the axial direction of the ropes 211 to 213. As an alternative the pestle 132 may be reciprocated by means of a pneumatic cylinder, pro-. .
lo fireball a known air cylinder, the piston of which has a fastening arm extending through a longitudinal slot of the cylinder, whilst means are provided for sealing the cylinder slot.
The control of -the unpacking device 104 is illustrated in successive stages in Figs. 12 to 19.
In the position shown in Fig. 12 the retaining support 128 and the pestle 132 are located at the two ends of the us-packing space and the roller 94 is in the deflected position 10 indicated by broken lines in Fig. 10 so that a packed stack 4 can roll between the rollers 92, 93 and 94 in the affection of the arrow 136. Roy pestle 132 then moves into the position shown in Fig. 13 in which the packed stack 4 is urged against the retaining support 128, after which the pestle 132 is 15 moved back over a small distance of, for example, 5 mums twig.
14) in order to leave some clearance at both ends of the stack 4 for releasing the sheet 108.
As shown in Fig. 15 the stack 4 is rotated by driving the rollers 92, 93 and 107, whilst the knife 116 cuts up the 20 sheet 108 and peels it off the stack 4. The sheet 108 is con-dueled away between the rollers 93 and 107.
As shown in Fig. 16 the unpacked stack 4 is driven by the pestle 132 with the above mentioned speed V3, which exceeds the speed v2 of the ropes 211, 212, 213, the pestle 25 pushing in front of it the retaining support 12~ together with the support 123, whilst the stack 4 is clamped tight. The air cylinder 124 then operates as a counter-pressure spring. When the stack is engaged over a sufficient length between the ropes 211 to 213, so that these ropes produce sufficient 30 counter-pressure, the retaining support 128 is turned away by means of the cylinder 126 from between the ropes (Fig. 17).
Fig. 18 shows that the whole stack 4 is located between the ropes 211 to 213~ Then the pestle 132 and the retaining support 128 move back to their initial positions (Fig. 19), 35 whilst the stack 4 is further transported by the ropes 211 to 213. Ryan a next packed stack 4 of Fig. 12 can drop in be-tweet the rollers.
Fig. 22 shows that the ropes 211 to 213 can be commonly driven with the same speed v2 by a motor 137 having pulleys 139 mounted on a common horizontal shaft 138~ The ropes 211 to 213 are all positioned in a vertical plane and passed along guide discs 140 and stretching discs 141~
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of handling round, flat, substantially identical ends for tins, in which packed stacks of ends are supplied to an unpacking space and the sheet forming the packing is cut up by cutting means and peeled from the stack whilst the stack is rotated about its longitudinal axis, characterized in that the packed stack is moved transversely of its direction of length into the unpacking space and the unpacked stack is removed in its axial direction from the unpacking space.
2. A device for handling round, flat, substantially identical ends for tins, according to the method of claim 1 comprising a plurality of rotatably journalled rollers bounding an unpacking space for receiving a stack of ends packed in a sheet, said un-packing space being furthermore bounded by cutting means for cutting up the sheet, characterized by transport means for intro-ducing the packed stack into the unpacking space in a transverse direction thereof and by removing transport means for moving the unpacked stack of ends in an axial direction out of the unpacking space.
3. A device as claimed in claim 2, characterized in that a stack supply device for supplying stacks of ends to the trans-port means comprises:
guide means bounding an unpacking space and extending in the axial direction of the transport means;
a retaining support located at the end of the unpacking place near the transport means, and a pusher located at the end of the unpacking space remote from the transport means, the retaining support and the pusher being each movable in the axial direction of the transport means.
guide means bounding an unpacking space and extending in the axial direction of the transport means;
a retaining support located at the end of the unpacking place near the transport means, and a pusher located at the end of the unpacking space remote from the transport means, the retaining support and the pusher being each movable in the axial direction of the transport means.
4. A device as claimed in claim 3, characterized in that the pusher and the retaining support are independently movable in the axial direction of the transport means.
5. A device as claimed in claim 3, characterized by means for controlling the axial displacement of the pusher and the retaining support, so that during a treatment cycle they are first largely spaced apart during a receiving phase, in which a stack of ends packed in a sheet is received in the unpacking space, that subsequently at the beginning of an unpacking phase they are moved away from one another a clearing distance for releasing the packing at the head ends of the stack, that after unpacking at the beginning of the supply phase they are moved towards one another for clamping between them the stack and that subsequently they are moved towards the transport means together with the stack, whilst the distance between them remains the same.
6. A device as claimed in claim 5, characterized in that the retaining support can be moved into and out of the path of a stack of ends.
7. A device as claimed in claim 2, 3 or 5, characterized by a stack supply device having a stock holder for stacks bounded by a transporter with stack receiving spaces.
8. A device as claimed in claim 2, 3 or 5, characterized in that a knife holder is provided with a stop bearing on the stack.
9. A device as claimed in claim 2, 3 or 5, characterized in that the unpacking means comprise at least one knife which is held in its working position by spring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000476044A CA1231316A (en) | 1985-03-08 | 1985-03-08 | Method and device for handling ends for tins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000476044A CA1231316A (en) | 1985-03-08 | 1985-03-08 | Method and device for handling ends for tins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231316A true CA1231316A (en) | 1988-01-12 |
Family
ID=4129982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000476044A Expired CA1231316A (en) | 1985-03-08 | 1985-03-08 | Method and device for handling ends for tins |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1231316A (en) |
-
1985
- 1985-03-08 CA CA000476044A patent/CA1231316A/en not_active Expired
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |