KR0181962B1 - Plastic bag opening apparatus - Google Patents

Abstract

An apparatus for opening plastic bags to remove their contents has a pair of wheels (11,12) mounted in approximate coplanar relationship such that there is a point of approximate cotangency. The two wheels rotate in opposite directions, and a series of tines 13 are mounted in spaced relation on the periphery of each wheel to extend normal to the direction of travel of the loop. Once a filled plastic bag is placed onto the apparatus at the point of approximate cotangency of the wheels, a biased flexing structure presses the bag against the tines. A hole is created in that surface riding on the tines as the tines move away from the point of approximate cotangency. To remove any articles remaining in an opened bag, a pair of oppositely-rotating rollers (63,68) are positioned so as to draw the bag between them. An oscillating member forward of the rollers acts to prevent any articles remaining in an opened bag from entering between the rollers. A vacuum collection means 73 draws off the emptied bags. The apparatus has particular application to the opening of bags containing recyclable articles. <IMAGE>

Description

Devices for opening filled plastic bags and removing filled contents

1 is a plan view, partly cut away from a first embodiment of the device for opening the filled plastic bag and removing the filled contents according to the invention;

2 is a side view partially cut away from the first embodiment of FIG.

3 is a side view partially cut away from the first embodiment of FIG.

4A is a perspective view of the embodiment of FIG.

FIG. 4b shows a possible positional sequence of plastic bags hung on a tine of the device wheel, with a perspective view of the embodiment shown in FIG. 4a.

FIG. 5 is a side view of one type of spokes to be used in the first embodiment of FIG.

6 is an end view of the spokes of FIG.

7 is a plan view of a second embodiment of an apparatus for opening a filled plastic bag and for removing the filled contents according to the invention.

8 is a side view of the second embodiment of FIG.

FIG. 9 is a sectional view of the chain and attached spokes of the second embodiment taken along the line VII-VII of FIG. 7. FIG.

10 is a perspective view of an alternative strainer for the first embodiment of the device for opening the filled plastic bag and removing the filled contents.

FIG. 11 is a perspective view of an alternative suction structure for removal of bag residue for the first embodiment of FIG.

12 is a perspective view of an alternative bag transfer facility for the first embodiment of FIG.

FIG. 13 is a perspective view of the device for pressing the filled pouches towards the spokes in the alternative pouch delivery facility of FIG.

14 is an end view of the device of FIG. 13 taken along line XIV-XIV of FIG.

FIG. 15 is a perspective view of the first embodiment with the provisions of FIGS. 10 to 14;

* Explanation of symbols for main parts of the drawings

11, 12: wheel 13: wheel

16: input shaft 17: first gear box

18: belt 19: second gear box

20: pulley 21: belt

33: suit 36: axis

40: first bearing 43: second bearing

45: curved conical saucer 50: annular beak

52: ramp 53: conveyor belt assembly

60: strainer 62: motor

75, 76: guide bar 82: vertical plane

83: holding 90, 91: chain

92, 93: guide tracks 98, 100: sprockets

The present invention relates to an apparatus for opening a filled plastic bag and for removing the filled contents, and more particularly, to a controlled opening device of plastic garbage bags filled with recyclable items.

Attention to the environment has led to collections for the recycling of used bottles, cans, paper and other items. For convenience, these items are often collected and stored in plastic garbage bags. Since opening these pockets manually is slow and labor intensive, it is necessary to have a means for quickly opening a large number of these pockets.

Various mechanical arrangements have been proposed to open a bag full and empty its contents. One such facility is a device for opening and emptying filled bags and disposing of empty bags, as disclosed in US Patent No. 4,798,508, issued to The Dow Chemical Company on January 17, 1989. And method. In this case, the bag is guided to the space between the pair of rotating drums. A series of spikes extend radially from each drum through a belt extending around the drum. As the spikes enter the space between the drums, the pockets are caught by the spikes and pulled into the cutting means. The cutting means slit the bag in half to empty the contents, and the empty half bag is transported on the spikes of each drum to the point where the spikes fall from the belt so that the spikes fall out of each half bag.

Since it is desirable to maintain the integrity of glass bottles and similar brittles in the regeneration process, it is not practical to use equipment such as that disclosed in US Pat. No. 4,798,508 as described above for opening the pockets. As required instead there is a means for opening the side of the filled plastic bag and positioning the bag so that its contents fall through the open side. The device of the present invention is a means for plastic bag opening and removal of filled contents, which can quickly open and empty the plastic bag while maintaining the integrity of each item in the bag.

The device of the invention has a pair of wheels, one moving in the first rotational plane and the other moving in the second rotational plane. One wheel is adapted to rotate clockwise and the other wheel is adapted to rotate counterclockwise. The two wheels rotate at substantially the same angular velocity, such that the first and second planes of rotation are approximately coplanar and there is at least one approach position where the two wheels extend in tangential separation with respect to each other. Will be located. The devices also have a series of spokes mounted in a separate relationship on the outer periphery of each wheel so as to extend mainly in a direction perpendicular to the plane of rotation on the same side of the plane of rotation of each wheel. Moreover, the device has means for pressing the pocket onto these wheels moving past the access position such that the wheels penetrate the first surface of the pocket. As the spokes move away from the approaching position, successive departures of the spokes on the two wheels act to create a tear line on the first surface of the pocket. The apparatus also has oscillatory strainer means and vacuum collection means located adjacent to the outer periphery of each wheel. The spacing between adjacent spokes on the same wheel as the tangential separation of the wheels is such that the tear lines made on the first surface of the pocket are continuously connected to this surface as the spokes on the wheels move away from the access area. It is close enough to connect to form a hole. All or part of the contents of the bag is adapted to be poured through the hole. Through the combined action of the straining and oscillating action, the oscillatory strainer means is adapted to empty any contents in the bag. The vacuum collecting means is adapted to collect the empty bag. At least a portion of the vacuum collecting means is positioned to be directly adjacent to the oscillating strainer means and to be in direct contact below the strainer means with respect to the rotation of each wheel.

The oscillatory strainer means is a pair of rollers each provided so that each roller axis of rotation extends parallel and horizontally to another roller. The two rollers rotate in opposite directions and are spaced apart so that the cylindrical surface of the rollers engages along the pull line. The pull line is positioned so that the bag hung on the spokes moving past one end of the rollers is pulled into the pull line. The oscillating strainer means also has a oscillating member extending in front of the pair of rollers and having a first portion and a second portion. The first portion forms one beak of the oscillating groove portion in the barrier placed in front of the pull line; Pockets entering the pull line are pulled through the grooves. The second portion forms an oscillatory guide for moving against the pockets entering the grooves to help prevent any contents in the pockets from entering the grooves.

The stop ring is arranged adjacent to the outer periphery of each wheel. Each ring has a diameter slightly larger than the diameter of the circle formed by the spokes on each wheel. The spokes on the wheels move inside the ring adjacent to each ring. Each ring is installed in the apparatus such that the upper edge of the ring portion extending adjacent to the strainer means extends adjacent the upper end of the spokes moving past the strainer means.

The bag pressing means comprises a deflected flexible structure of a plurality of links, one of which has plate means for pressing on the bag. The flexible structure consists of four links hinged in series with each other in a box-like configuration. The outer end of each outer link is hinged to the frame of the device. The flexible structure is supported on the frame of the device in the normally stationary position and is deflected by the biasing means to return to the stationary position after movement. With this arrangement, the initial contact of the bag with the plate means moves the flexible structure from its stop position. The biasing means generally act to press the pockets against the spokes on the wheel in the approaching position, and then return the flexible structure to the rest position.

The vacuum collecting means has another part disposed below one part with respect to the rotation of each wheel. Another part of the vacuum collecting means consists of a pair of fixed vertical pipe sections, one extending above the path of the spokes in the fixed position and the other extending downward. Air is drawn out of the lower pipe section and drawn into the upper pipe section at the same flow rate to create an upwardly air column across the wheels moving past the fixed position.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to the first embodiment shown in Figs. 1 to 4b, a pair of identical wheels 11 and 12 are arranged in the same horizontal plane. Each of the wheels 11 and 12 has a series of wheels 13 supported apart at equal intervals around the outer circumference. Each wheel 13 is fixed to the outer end of each horizontal arm 14 and the inner end of the arm 14 is attached to the outer circumference of the wheel. The spacing between the axes of rotation of the wheels 11, 12 is the path of the wheels on the wheels 12 where the paths of the wheels on the wheels 11 are at a position indicated by reference numeral 15 of FIG. 1. As much as accessing and passing through. An electric motor (not shown) is connected to the input shaft 16 of the first gearbox 17 and to the second gearbox 19 via the belt 18. The pulley 20 is installed on the output shaft of the gearbox 17 to drive the belt 21, the belt 21 also being pulley 22 fixed to the wheel 11 to rotate with the wheel 11. Extend around. The wheel 12 has been removed in FIG. 1 to better show the drive frame for the wheel 12 as well as the lower frame 23 of the device in which the wheels 11 and 12 rotate directly above. The device shown rotates the wheel 11 clockwise and the wheel 12 counterclockwise at the same angular speed, and the spokes on the two wheels move separately after passing the position of 15. .

Each of the spokes is attached to the outer circumference of either the wheel 11 or the wheel 12 so as to extend vertically. However, the spokes have a slant in the direction of movement of the outer circumference. In the side view of FIG. 5, the spokes 13 are shown attached to the outer periphery 28 of one of the wheels 11, 12 so as to extend at an angle of approximately 75 ° with respect to the plane of rotation of the particular wheel: Although the size of is not the critical angle, all the spokes 13 will be installed at the same angle. As shown in more detail in the end view of FIG. 6, the point 29 at the end of the spokes 13 is actually the edge 30. As also shown in FIG. 6, each spoke is also inclined in a radial direction with its outer end extending towards the center of the particular wheel.

The chute 33 is fixed to the frame of the device according to the invention at an angle such that its lower end approaches and ends at the position of 15. The upper end of the chute 33 is located under the conveyor belt (not shown). The angle on the chute 33 is sufficiently steep so that the object-filled plastic pouch slides freely along the chute 33 onto a series of dual wheels moving past the position of 15. The pair of toothed wheels 35 rotate freely in a separate relationship from the axis 36, with each end of the axis being connected to each end of the pair of identical beams 37. The pair of wheels 35 are typically about 8 inches apart. The outer end of each beam 37 is pivotally connected to an axis 38, which is fixed to the frame of the device of the invention.

As shown in FIGS. 2 and 3, the wheel 12 is supported on the first bearing 40 to rotate on a fixed axis 41 extending from the top of the device underframe 23, and the wheel ( 11 is similarly supported. Just above the bearing 40, the axis is slightly curved towards the position of 15. On the bent portion, the second bearing 43 on the axis 41 supports the curved cone plate 45. The pile 46 installed on the upper surface of the wheel 12 extends into a gap in the lower surface of the support plate 45. The pile 46 allows the wheel 12 and the backing plate 45 to rotate together at an angle-eccentric surface of rotation. A similar saucer 49 rotates with the wheels 11. The purpose of the pair of saucers 45, 49 is to place the rubbish bags on the two series of spokes moving past the position of (15), the pockets having the curved conical edges of each of the two saucers and each bearing. Stay on the annular beak 50 on the dish.

A portion of the lower frame 23 forms an inclined ramp 52 which has an angle of approximately 25 ° with respect to the horizontal plane. The upper end of the ramp 52 extends below a portion of the wheels 11 and 12 as shown in FIGS. 1 to 4 b, and the lower end of the ramp contacts the conveyor belt assembly 53.

As shown in more detail in FIGS. 4A and 4B, the strainer device 60 is located adjacent to the outer circumference of the wheel 12, and the same device is located adjacent to the outer circumference of the wheel 11. The device 60 is formed by a motor 62 which drives the first vertical shaft 63 via the gearbox 64. The gearbox 64 is supported on a vertical strut 65 fixed to the ramp 52 via a connected lower support 66. The lower portion of the first shaft 63 has a series of gear teeth extending vertically in line with the axis of symmetry of the axis. The second shaft 68, which is supported for rotation on the lower support 66, extends in parallel with the shaft 63 and has a series of compensating gear teeth that engage with the gear teeth of the shaft 63. Because of the interlocking gear teeth of the shafts 63, 68, the clockwise rotation of the shaft 63 causes a counterclockwise rotation of the shaft 68. Each gear tooth of the shafts 63, 68 lies in each of the pair of housings 70, 71, and the spacing between the two housings forms a narrow pair of vertical slits. Associated with strainer assembly 60 is suction pipe 73 as shown in FIGS. 1 and 2 and in the outline lines of FIGS. 3, 4a, and 4b. The suction pipe 73 extends at one angle, one end of which is located adjacent to one of the vertical slits extending between the housings 70, 71.

The pair of lower guide bars 75, 76 extend adjacent the path of the spokes 13 from the ramp 52 to the top of the housing 71, and the lower end of the guide bar 75 extends from the guide bar 76. It is fixed to the ramp 52 at a position closer to the wheel 12 than the lower end. The upper guide bar 78 extends upwardly from an attachment point on the housing 70 to an attachment point (not shown) on the frame of the device according to the invention.

The cam bar 80 extends adjacent to the path of the spokes 13 at a position between the position of 15 and the strainer assembly 60. One end of the cambar 80 is fixed to the ramp 52 and the other end of the cambar is on top of the vertical strut 81 fixed to the ramp 52 by the lower end of the vertical strut 81. It is fixed. As shown in Figures 4a and 4b, the vertical plate 82 is supported from the frame of the device according to the invention by a strut 83. The plate 82 has a generally rectangular shape, and is installed such that the lower surface thereof lies slightly above the annular beak 50.

The pair of bars 85 extend downward one angle from the frame of the device according to the invention so that their lower ends take a separate relationship from the spokes 13. The top view of FIG. 1 shows where bars 85 take a relationship to the overall apparatus.

The first embodiment of the apparatus works in the following manner. The filled pouch falls below the chute 33 using wheels 11 and 12 that rotate each other at an angular speed (preferably 8 RPM) between 3 and 10 RPM. The pair of toothed wheels 35 rotate while the plastic pouch slides under the wheel 35 and rests on the pouch while the pouch moves on two series of spokes 13 at the position of (15). Quit. The weight of the wheels 35 acts to push the plastic pouch more firmly over the spokes 13, and the wheels 35 also help the pouch to rest on the spokes. Although the device according to the invention has been shown to work satisfactorily without the wheels 35, their presence improves operation. As the parallel spokes 13 break away, the line edge 30 of each spoke digs into the pocket surface carried on that edge. In a working device, each of the wheels 11, 12 has a diameter of approximately 182.9 cm (6 ft), approximately 10.16 cm (4 inches) apart, and the two wheels 11, 12 are positioned at (15). The spokes 13 of each of the wheels at a distance of approximately 10.16 cm apart. With this configuration, it has been found that the tearing lines made on the surface of the pocket by detachment of the spokes are connected to form a hole in the surface of the pocket. It was found that the disengagement distance of the spokes 13 on the two wheels at the position of (15) became an important measure for the effective functioning of the device. If the distance is too small, the pocket will get caught in the wheel without effective penetration, and if the distance is too large, the tear lines made on the surface of the pocket will be sufficient to rupture the web between these lines to form a hole in the surface. Do not approach.

A hole is made in the lower surface of the bag so that the upper part of the bag is in close contact with the pair of bars 85. While the movement of the upper portion of the pocket retreats backwards, the lower portion continues to move on the spokes, so that the pocket is rotated so that the open lower surface moves ahead of the upper portion of the pocket. Bars 85 are positioned on top of enough of the spokes 13 to allow this pocket rotation. Most of the recyclate in the open pouch falls over the ramp through the open bottom surface of the pouch and then slides onto the conveyor belt assembly 53 which carries the recyclate to the sorting area. Objects that remain on wheel beak 50 contact one of the plates 82 overlying these beaks, and each plate 82 acts to push such objects onto ramp 52. Rigid objects such as cans sometimes get stuck on the spokes (13). Cambar 80 pushes such objects out of the spokes.

Although most of the objects in each bar are removed by the preceding process, some objects usually remain at the edges of the bag. Strainer assembly 60 and guide bars associated with the device are used to retrieve these objects. The open plastic bag 87 is attracted between the lower guide bars 75, 76 and the upper right guide bar 78 by one or more spokes 13 across the lower guide bars 75, 76. . The pocket then enters into the vertical gap between the housings 75 and 71 and into the path of the pair of coupling gears on the axes 70 and 71. Once the engagement gears engage the pockets, these gears proceed to pull the pockets across their engagement surfaces. Some objects remaining in the pocket are too large to enter the vertical gap between the housings 70, 71, and these objects are pushed onto the ramp 52 via the pocket. As the debris of the pouch 87 moves out of the other side of the strainer assembly 60, these debris are collected by the suction pipe 73 which transports them to the trash can (not shown).

7 to 9 show a second embodiment of the device according to the invention of the invention. In this embodiment, the pair of chains 90 and 91 extend through paths partially formed by guide tracks, respectively, and these guide tracks are indicated by reference numerals 92 and 93. Each of the guide tracks 92 and 93 comprises an upper track section and a lower track section as shown in FIG. The chute 95 has the function of matching the chute 33 of the first embodiment, and the pair of toothed wheels 96 have the function of matching the pair of wheels 35 of the first embodiment. The chain 90 extends around the sprockets 97 and 98, and the chain 91 extends around the sprockets 99 and 100. The chains 90, 91 have a series of spokes 102 installed on the chains. Unlike the first embodiment, each of the spokes 102 extends vertically and has a pointed upper end in dots. In order for the movement of the spokes 102 through the guide tracks 92 and 93 to be steady, each spoke has a pair of carrier wheels 103 installed on the spokes, the axis of rotation of each of the wheels 103 being in line with the longitudinal axis of the spokes. Extend in line. One wheel 103 of each pair of carrier wheels rides on the upper track zone of either of the guide tracks 92, 93, and the other wheels 103 ride on the bottom track zone. The suction pipe 104 extends vertically at an intermediate position between the central portions of the sprockets 98, 100, and the lower end of the suction pipe 104 terminates slightly above the plane extending through the upper end of the spokes 102. The conveyor system 105 extends below the area between the guide tracks 92 and 93 to collect objects away from the pockets held by the wheels moving in the guide tracks.

The second embodiment of the apparatus operates in a similar manner to the apparatus of the first embodiment. The full bag of rubbish is disposed over chute 95 and slides over the spokes 102 moving past the position of 107. The parallel spokes 102 deviate in a straight line and make a hole in the adjacent pocket surface. Then, because of the short distance, the parallel spokes 102 move in parallel with the path keeping the emptied pockets taut between the spokes. The parallel spokes 102 are then reassembled by passing each of them around the sprockets 98, 100, and the retention of the spokes on the empty pocket becomes loose accordingly. The pouch then passes under the suction pipe 104, which pulls the pouch emptied out of the wheels and puts the pouch into the trash (not shown). Shown in FIG. 10 shows an alternative strainer device for the first embodiment. This device includes a motor that drives the worm in the worm gear 121. The worm wheel in the gearbox 121 is installed on a bearing in the frame member 122 of the device according to the invention and is connected to the horizontal axis 123 of the first roller 124. The first roller 124 is a steel cylinder and is surrounded by a light urethane cylindrical tire 125 about 2.54 cm (1 inch) thick. The horizontal axis 127 of the second roller 128 is supported on a bearing in the frame member 122. The second roller 128, similar to the first roller 124, is also a steel cylinder and is surrounded by a light urethane cylindrical tire 129 about 2.54 cm (1 inch) thick. The horizontal shafts 123 and 127 are provided on the frame member 122 at intervals such that the tire 125 continuously presses against the tire 129: this contact causes the second roller 128 to contact the first roller 124. Rotate at the same angular velocity, but in the opposite direction.

An alternative strainer device further includes a cam plate 132 mounted on the shaft 127 such that the working surface of the cam plate 132 is adjacent to the tire 125. The cam plate 132 has an eccentricity in which the maximum radius is about 0.3175 cm larger than the minimum radius, and the maximum radius is 180 ° away from the minimum radius on the cam plate 132. Installed in the bearing on the frame member 134 of the device according to the invention is the pivot axis 135 which is fixed to the pair of bars 136. The bars 136 extending above the second roller 128 are integrally connected to the arcuate plate 137, and the arcuate plate 137 of the horizontal groove 128 having the same height as the contact line between the tires 125 and 129. To form the upper beak. The metal plate 140 fixed to the frame of the device according to the invention forms the lower beak of the horizontal groove 138. The camwheel 142 is installed on one of the bars 136 and rotates freely. The cam wheel 142 is positioned to ride the cam plate 132. As the shaft 127 and the cam plate 132 rotate, the camwheel 142 and the arcuate plate 137 move through reciprocating vertical movement. Rotation of the cam plate 132 causes the distance between the upper and lower beak portions of the groove portion 138 to vary between a value of at least 0.3175 cm (1/4 inch) and at most 0.9525 cm (3/8 inch). An alternative strainer device is provided such that the horizontal groove 138 extends at approximately the same height as the trajectory drawn by the upper end of the spokes 13, and one end of the groove 138 and one end of the rollers 124, 128. It is installed on the frame of the device according to the invention so as to be adjacent to. Secured to the arcuate plate 137 is a wedge plate 144 that maintains a small distance from the upper end of the spokes 137 toward all vertical positions of the arcuate plate 137. The two support members 145 extend between the plates 137 and 144 to maintain their relative positions.

The plastic pouch caught on one wheel 13 is pulled through the groove 138 and captured almost immediately by a pair of tires 125, 129. The access of the plate 144 to the spokes 13 prevents any object remaining in the pocket from moving on the spokes. The plate 144 acts as a barrier to stop objects in the bag from being thrown against the plate 137 and thus prevents the breakage of articles such as glass bottles. The bottom surface of the plate 144 extends in a plane slightly above the groove 138 and the contact of the plate 144 on the object in the bag is arranged such that their path does not point into the groove 138. The small dimension of the groove 138 acts as a barrier to the remanufactured article in the bag and allows the tires 125 and 129 to take the bag away from these objects. Occasionally, flat cans or similar thin articles are instantaneously fitted into the grooves 138, where the reciprocation of the grooves 138 is found to pull out the sandwiched items.

Shown in FIG. 11 is an alternative suction structure for the removal of bag debris from the device according to the invention. An alternative suction structure has a primary suction pipe means 150 and an auxiliary suction pipe means 151. Note intake pipe means (150), has an area of about 129.032cm ² (20inch ²⁾ comprises a rectangular pipe 153 is disposed directly below the device according to the invention from the strainer apparatus. The pipe 153 has a rectangular groove portion formed at one side, and is arranged such that the path of the spokes 18 passes through the groove portion. It is the auxiliary suction pipe means 151 located approximately 121.92 cm (4 feet) below the path of the spokes 13 from the pipe 153. This auxiliary pipe means comprises a pair of circular pipes 155 and 156 each having an area of 77.4192 cm ² . The pipe 155 is arranged such that its lower open end lies directly above the upper end of the spokes 13 and extends vertically, and the pipe 156 has its upper open end placed directly below the lower end of the spokes 13. It is arranged to extend vertically. As shown in FIG. 11, the pipes 153 and 155 feed into a common suction pipe 157 that enters the bag residues 158. As shown in FIG. If there is a fan 159 at the top of the keg 158, the fan makes suction in pipe 157 and also creates a corresponding exhaust air flow through pipe 156. The strong synthetic airflow between the pipes 155, 156 is sufficient to pull any plastic residues remaining outside the spokes 13.

12, 13 and 14 show alternative bag conveying devices. The filled sacks are stacked into a trough 160 having a horizontal floor 161 connected to a pair of inclined side members 162. A series of pushers 165 connected to the continuous drive chain extend through the longitudinal grooves 164 in the floor 161. The first end of the trough 160 ends adjacent to the previously discussed position of 15 where the two sets of spokes are most adjacent. Above the position of 15, the bag pressing mechanism 170 is installed in the frame of the device according to the invention. The instrument 170 shown in the side view of FIG. 13 includes four connecting bars 171, 172, 173 and 174 as well as two inclined members 175, 176 to be discussed. One end of the bar 171 is hinged at the position of 180 to the frame of the device according to the invention. At rest, the bar 171 extends down from one end thereof at an angle of about 60 ° to the horizontal. The other end of bar 171 is pivotally connected to one end of bar 172. At rest, the bar 172 has a first portion extending from an end thereof at an angle of about 20 ° with respect to the horizontal, and an integral part extending up at an angle of about 40 ° with respect to the horizontal from the first portion. It has two parts. The other end of bar 172 is pivotally connected to one end of short bar 173, and bar 173 extends upward at an angle of about 50 ° with respect to the horizontal. The other end of bar 173 is pivotally connected to one end of bar 174 at rest, and bar 174 extends horizontally. The other end of the bar 174 is hinged to the frame of the device according to the invention at the position of 181, which frame also has a plate 183, the plate being horizontal to the plate by providing support from below. Hold bar 174 in the rest position. The dimensions a, b, c, d and e shown in FIG. 13 are 33.02 cm (13 inches), 45.72 cm (18 inches), 55.88 cm (22 inches), 22.88 (9 inches), and 66.04 cm (26 inches), respectively. As also shown in FIG. 13, a pair of heavy springs 184 extend vertically side by side from the frame plate 183 to the bar 171, which springs show the pocket pressing mechanism 170 shown in FIG. 13. When in stop position, only a slight load is transmitted.

The inner inclined member 175 fixed to the second portion of the bar 172 is a plate 185 having a pair of peripheral flanges 186. Each circumferential flange 186 ends along one of the pair of plate 185 edges parallel to the bar 172. An outer sloping member 176 pivotably connected to the bar 172 by a pair of ear portions 187 is formed from a pair of plates 188, which plate 188 defines a circumferential flange 189. Each supporting and connected by a U-shaped member 190. Rigid element 191 also extends from each plate 188 in parallel with circumferential flange 189. In the rest position of the outer inclined member 176, the plates 188 stop on the plate 185 of the inner inclined member 175. The inner inclined member 175 is sized to press pockets of smaller size than those pressed on the outer inclined member 176.

The alternative bag conveying apparatus shown in FIGS. 12, 13 and 14 operates in the following manner. A series of filled pouches are stacked into the trough 160, and the seal 165 pushes the pouches towards the first end of the trough 160. Initially, the lined pockets are grabbed by the spokes 13 on the wheels 11 and 12 and pushed towards the pocket presser 170. Large pockets contact the circumferential flange 189 and the rigid element 191 of the outer inclined member 176 and allow the member to rotate upward while maintaining guide contact. The small pockets initially contact the circumferential flange 186 of the inner bevel member 175. As the pouch begins to press against the peripheral flanges 186, the bars 171, 172, and 173 move to the left shown in FIG. 13 to extend the spring 184. The bars 172, 173, and 174 then begin to move upwards as the pocket is picked up by the spokes 13 at the position of 15 and pulled under the pocket presser 170. The inner inclined member 175 (outer inclined member 176 in the case of a large pocket) is pressed downwards on the pocket, and the parallel spokes 13 tear to open the pocket. Then, the bag pressing mechanism 170 returns to the stop position imminently at the time when the action of the pressing mechanism is started on the next filled bag.

FIG. 15 shows the relative positions in the first embodiment of the alternative rescue arrangements of FIGS. 10-14. Any further small modifications are also shown for the first embodiment. The guide bars 75, 76 and 78 shown in FIG. 4A have been removed by having cam bars 80 and vertical struts 81. 15 shows the addition of a pair of fixed steel rings 195. Each ring lies outside of each wheel 11, 12 to adjoin the spokes 13 on the wheels. Each ring 195 is held in position by having a lower edge of the ring welded to the upper edge of the rigid arcuate steel curtain 196, and the steel curtain is welded to the ramp 52. The ring 195 is arranged such that the upper edge of the ring extends adjacent the path of the upper end of the spokes 13 moving past the plate 144 of the strainer device. The heavy rubber mat 197 extends from below the position of 15 to the ramp 52 and each side of the mat 197 partially extends over one end of each curtain 196. This arrangement prevents objects falling from open pockets from being caught on the wheels 11, 12. Another variant from the first embodiment shown in FIG. 4A is to replace the plate 82 with a heavy rubber flap 198.

Through the use of the alternative rescue equipment shown in FIGS. 10 to 15, an improved operating speed of the device according to the invention is achieved.

Claims (28)

Apparatus for opening the filled plastic bag and removing the filled contents, comprising: a) one side adapted to move clockwise and rotate in the first rotational plane and the other adapted to rotate counterclockwise in the second rotational plane; One approach, where the two rotate at the same angular velocity, and the two cause the first and second rotational planes to be coplanar and extend in tangential separation with respect to the two A pair of wheels to allow the position to exist; b) a series of spokes installed in a separate relationship on the outer periphery of each of the wheels such that the plane of rotation of each wheel extends on the same side mainly in a direction perpendicular to the plane of rotation; c) the spokes moving past an access position where the spokes penetrate the first surface of the pocket, such that the resulting departure of the spokes on the two wheels acts to create a tear line on the first surface of the pocket Means for pressing the pouch onto; d) oscillatory strainer means disposed adjacent the outer periphery of each wheel; And e) a vacuum collecting means disposed adjacent to the outer periphery of each wheel, wherein the tangential separation relationship of the wheels and the spacing between adjacent wheels on the same wheel are away from the access position of the wheels on the two wheels. And the tear lines formed on the first surface of the bag are sufficiently close enough to be connected so as to form one continuous hole suitable for all or a portion of the bag's contents to fall through, and the oscillating strainer means being starining and Apparatus adapted to empty any contents remaining in the bag through the coupling action of oscillating, and wherein the vacuum collecting means is adapted to collect the empty bag. The roller according to claim 1, wherein the oscillatory strainer means comprises a pair of rollers each installed such that each roller axis of rotation extends parallel and horizontally to each other, the two rollers rotate in opposite directions and the cylindrical surface of the roller is pulled. Apart from each other to engage along, the pull lines are positioned so that the pockets caught on the wheels moving past one end of the rollers are pulled into the pull lines, the oscillating strainer means also extending in front of the pair of rollers and forming a first portion. And a oscillating member having a second portion, wherein the first portion forms one beak of the oscillating groove portion in the barrier placed in front of the pulling line so that the sacks entering the pull line are pulled through the groove portion. No contents that enter the groove Apparatus for forming the second portion helps to guide the yodongseong to move opposite to the pockets into the grooves that portion of. 3. An apparatus according to claim 2, wherein said oscillating member and said pair of rollers are driven by the same drive means. 2. An apparatus according to claim 1, wherein at least a portion of said vacuum collecting means is positioned to be immediately adjacent to the oscillatory strainer means and beneath said strainer means with respect to the rotation of each wheel. 3. An apparatus according to claim 2, wherein at least a portion of said vacuum collecting means is positioned adjacent to a pair of rollers and below these rollers with respect to the rotation of each wheel. 2. The wheel of claim 1 wherein a stop ring is placed adjacent the outer periphery of each wheel, each ring having a diameter slightly larger than the diameter of the circle formed by the wheels on the wheels. Are moved in an interior of a ring adjacent to each ring, the ring being installed in the apparatus such that the upper edge of the portion of the ring extending adjacent to the strainer means extends adjacent the upper end of the spokes moving past the strainer means. The apparatus of claim 1, wherein the bag pressing means comprises a plurality of links of deflected flexible structure, one of the links having plate means for pressing on the bag. 8. The flexible structure of claim 7, wherein the flexible structure comprises four links hinged in series with each other in a box-like configuration, the outer end of each outer link being hinged to the frame of the device, the flexible structure being in a stationary position. Deflected by the biasing means to be vertically supported on the frame of and to return to its stop position after movement, the pocket initially contacting the plate means and moving the flexible structure from the stop position, the deflection means being in the approach position Acting to press the pocket against the spokes on the wheel and then return the flexible structure to the rest position. 6. The method according to claim 4 or 5, wherein the vacuum collecting means has another part disposed below one part with respect to the rotation of each wheel, wherein the other part of the vacuum collecting means has a path of the wheel in a fixed position. Air from the lower pipe thrust at the same flow rate to create an upwardly air column traversing the spokes moving across the fixed position, including a pair of fixed vertical pipe sections extending one upward and one downward; Device that exhausts and sucks air in the upper pipe section. Apparatus for opening the filled plastic bag and removing the filled contents, comprising: (a) one loop suitable for moving clockwise and rotating in the first rotational plane and rotating counterclockwise in the second rotational plane; Other suitable loop arcs, wherein the two loops are such that the first and second rotational planes are coplanar and at least one approach position exists where the two loops extend tangentially with respect to each other. A pair of infinite loops; (b) a series of wheels installed in a separate relationship on the outer periphery of each of the loops such that the plane of rotation of each loop extends mainly on a same side with respect to the plane of rotation on the same side; (c) teeth moving past one of the access positions such that as the spokes move away from a particular approach position, the resulting departure of the spokes on the two loops acts on the tear line on the pocket surface on the wheel. Means for positioning a pouch on the spokes; (d) means for carrying a bag filled with said special access position; (e) means for pressing the pouch against these spokes moving over the particular access position; (f) means for collecting the contents of the bag after the contents have been removed from the bag; And (g) means for removing the pocket from one or more spokes after the contents have been removed from the pocket, wherein the tangential separation relationship of the loops and the spacing between adjacent spokes on the same loop, As the spokes on the two loops move away from the particular access position, the tear lines formed on the surface of the bag may be sufficiently accessible to connect to form one continuous hole suitable for all or part of the bag's contents to fall through. Device that is degree. The apparatus of claim 10, wherein the vehicle is a chute disposed at an angle at which the pockets slide freely on its face, the lower end of the chute ending at the particular approach position. 11. The bag of claim 10 wherein said bag contents collection means are ramps and conveyor belts, said ramps being disposed below said endless loops to collect the contents of said bag away from said bag, wherein said conveyor belts are departed from said ramps. And arranged to extend across the base of the ramp to collect objects. 11. The apparatus of claim 10 wherein said bag removing means is a vacuum suction structure. 11. The conveying means of claim 10, wherein the conveying means is a chute arranged at an angle at which the pockets slide freely on its face, the lower end of the chute ends at the particular approach position, and the pressing means is supported on the outer end of the pivoting arm. And an inner end of the arm is installed for rotation on the frame of the device. 12. The apparatus of claim 10, wherein each endless loop is a rim of a wheel and there is only one access position where the rim of each wheel extends in tangential separation relative to the rim of another wheel. 11. The method of claim 10, wherein each infinite loop is a chain, and there are two access positions where the pair of chains extend in tangential separation with respect to each other, one of the access positions being a special access position, Another access position is the position of the bag removal means. 11. The apparatus of claim 10, wherein the respective spokes are attached to each loop such that the spokes have a slant in the direction in which the loop moves at the point of attachment. 18. The apparatus of claim 17, wherein the respective spokes are attached to each loop so that they also have a slant towards the inside of the particular loop. 19. A device according to any of claims 10, 17 and 18, wherein each of the spokes has a rectangular cross section. 19. An apparatus as claimed in any of claims 10, 17 and 18 having the respective circular cross section. The device of claim 10, wherein each of the spokes has a line edge for contacting the pocket surface, wherein the line edge on each wheel is arranged to extend perpendicular to the direction of movement of the spokes. 16. The device of claim 15, wherein the means for positioning the bag is a pair of elements having a curved cone shape, wherein each element of the elements is such that the axis of rotation of the element crosses the axis of rotation of each wheel at a first angle. Arranged for rotation about the wheels, with a flat annular ring extending around the larger end of each element, the outer surface of each ring being arranged at right angles to the axis of rotation of each element, the outer periphery of said ring and said angle Wherein the rim of the wheel moves adjacent to each other in the approaching position, and the conical incline on the two elements acts to position the pocket in the approaching position. 23. The device of claim 22, further comprising one or more rigid members, the rigid members extending across the path of the upper portion of the pockets moving away from the frame of the device in the access position, the rigid members being the spokes. Rotating each pocket so that a hole made in the surface of the pocket extends toward the upper portion of the pocket. 23. The apparatus of claim 22, further comprising a pair of plates, each plate being arranged to extend at right angles slightly above each ring surface to push out any objects carried on the ring from each ring. 23. The apparatus of claim 22, further comprising a pair of pocket strainer means, each strainer means comprising a strainer assembly and a series of guide rails, each strainer assembly disposed adjacent to an outer periphery of each wheel and And a pair of adjacent cylindrical members that rotate in opposite directions to form a pull line adjacent to the rim, wherein the pockets on the wheels of one of the wheels are secured by the respective series of guide rails. And a cylindrical member of each strainer assembly adapted to pull any object remaining in the bag from the bag. 27. The apparatus of claim 25, wherein the pair of adjacent cylindrical members is a pair of cylindrical gears, and the pull line is a joining line formed by engagement of teeth on the pair of gears. 27. The apparatus of claim 25, further comprising a vacuum suction structure positioned to collect respective bags after the bag is pulled by the bag strainer means. 17. The method of claim 16, wherein each of the chains extends around each of the first and second wheels, wherein the particular approach position is between a pair of second wheels, each of the chains from the first wheel. Move through each fixed track when moving to the second wheel, the tracks having a greater spacing distance when moving the tracks than when the chains move around either the first wheel or the second wheel Device deployed.