Automatic stacking machine for finished cartons

Abstract

The invention relates to the technical field of stacking equipment, in particular to an automatic finished carton stacking machine which comprises a conveying mechanism, a carrying mechanism and a transferring mechanism, a stacking seat is arranged on the upper portion of the transferring mechanism, a stacking positioning assembly is arranged on the side edge of the transferring mechanism, and a stabilizing assembly is arranged on the side edge of the carrying mechanism. The stabilizing assembly comprises a containing table arranged on the side edge of the carrying mechanism, a top pressing plate is arranged on the upper portion of the containing table, a center rod is rotationally connected to the inner wall of the top pressing plate, a rope is wound around the outer surface of the center rod, and a transverse plate is fixedly connected to the end, away from the center rod, of the rope. According to the carton stack binding and locking device, the stabilizing assembly is arranged on the upper portion of a carton stack, the downward pulling assembly is used for driving the stabilizing assembly to be unfolded, the carton stack is bound and locked, the stability of the carton stack is improved, and the situation that the carton stack inclines and falls in the transferring process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of palletizing equipment, in particular to an automatic palletizer for finished cartons. Background Art

[0002] Cartons are packaging containers made of corrugated cardboard, which have the characteristics of low cost, light weight, easy processing and recyclability. Palletizers are automated stacking equipment after the production of cartons. They are usually composed of robotic arms, conveying systems, control systems, etc. They use sensors and programs to accurately locate and grab cartons, and can stack cartons neatly according to the set arrangement and number of layers, thereby improving production efficiency and reducing labor intensity.

[0003] After searching, it was found that according to the publication number CN117104641B, an intelligent palletizer for carton production is disclosed, which includes a palletizer, a placement plate, a first conveyor belt, a strapping machine and a third conveyor belt, and also includes a disassembly mechanism. The disassembly mechanism includes a support and extrusion assembly, a drive assembly, a first blade for cutting off the tape pasted on the outer flap between the two inner flaps after the carton is closed, and a second blade for cutting off the tape pasted on the outer flap corresponding to the inner flap after the carton is closed. The carton is conveyed to the support and extrusion assembly via the first conveyor belt. The drive assembly controls the first, second and third blades to cut off the outer flap and the tape on the edge in turn, and then is flattened. After being accumulated on the third conveyor belt, it is packaged by the strapping machine and then clamped by the palletizer and placed on the placement plate to complete the recycling and collection of old cartons.

[0004] The above patent still has shortcomings in actual use. Cardboard boxes need to be stacked during the palletizing process. However, due to the presence of creases on the cartons, the cartons will be loose after folding and not compacted. This makes the cartons less stable after palletizing, especially since they need to be transferred and moved after palletizing. The transfer device itself will vibrate slightly during operation, and the stacked cartons are at risk of falling during the transfer process.

[0005] Based on this, the present invention discloses an automatic palletizer for finished cartons. Summary of the Invention

[0006] In order to solve the problems in the background art that cartons become loose after stacking due to creases, the stacking stability is poor, and the slight shaking of the device during transportation causes the stacked cartons to have the risk of falling during transportation, the present invention provides an automatic palletizer for finished cartons, which includes a conveying mechanism, a handling mechanism and a transfer mechanism, and a stacking seat is provided on the upper part of the transfer mechanism; A stacking positioning assembly is provided on the side of the transfer mechanism, a stabilizing assembly is provided on the side of the transport mechanism, and a pull-down assembly is provided on the upper portion of the stacking positioning assembly; The stacking positioning assembly includes a lifting gantry arranged on the side of the transfer mechanism, a lifting platform is arranged on the inner side of the lifting gantry, and an extension platform is fixedly connected to the side of the lifting platform; The stabilizing assembly includes a placement platform provided on the side of the transport mechanism, a top pressure plate provided on the upper portion of the placement platform, an inner wall of the top pressure plate is rotatably connected to a center rod, a wire rope is wound around the outer surface of the center rod, an end of the wire rope away from the center rod is fixedly connected to a horizontal plate, and a hook is fixedly connected to the bottom end of the horizontal plate; A reset assembly is provided in the middle of the top pressure plate, and the reset assembly includes a push rod movably inserted in the middle of the outer surface of the top pressure plate, and one end of the push rod extending into the interior of the top pressure plate is fixedly connected to a circular plate, and an arc groove is provided on the upper surface of the circular plate; During the stacking process, the cartons are not neatly placed on the palletizing seat by the handling mechanism. The cartons will shift and fall off easily. In order to ensure the neatness of the cartons, each layer must be positioned. As a further improvement of the technical solution, a hydraulic rod is provided on the upper part of the lifting platform, a transverse positioning clamp is provided on the side of the extension platform away from the lifting platform, and a longitudinal positioning clamp is provided on the inner side of the transverse positioning clamp.

[0007] On this basis, since the existence of creases in cartons will make them loose after folding, and stacking multiple cartons on the stacking base will magnify this looseness, resulting in low stability of the stacked cartons. In order to improve the stability of the carton stack; As a further improvement of the present technical solution, the top pressure plate is composed of an I-shaped structure consisting of two horizontal bars and two vertical bars. The side of the stacking seat is fixedly connected with a hanging plate, and the side end of the top pressure plate is fixedly connected with a guide tube. The guide tube is designed as a ninety-degree bent tube, and the end of the guide tube away from the top pressure plate abuts against the upper surface of the horizontal plate, and the rope passes through the inside of the guide tube.

[0008] As a further improvement of the present technical solution, the bend of the hook is rotatably connected to a movable hook, a spring is provided between the movable hook and the hook for reset, a clockwork spring is fixedly sleeved in the middle of the outer surface of the center rod, and the end of the clockwork spring away from the center rod is fixedly connected to the inner wall of the top pressure plate.

[0009] As a further improvement of the present technical solution, the pull-down assembly includes a side plate fixedly connected to the upper surface of the extension platform, a track is provided on the outer surface of the side plate facing the top pressure plate, the inner wall of the track is rotatably connected to a support plate, the outer surface of the rotating shaft of the support plate is sleeved with a torsion spring, and the end of the torsion spring away from the rotating shaft is fixedly connected to the inner wall of the track.

[0010] In another solution, since the carton stacks need to be processed further after being transported to the designated location, the carton stacks are stacked at a certain height, which makes it inconvenient to disassemble the stabilizing components. Moreover, after the movable hooks are disassembled, the power of the rope recovery can easily cause the hooks to swing, which is dangerous. In order to facilitate the disassembly of the stabilizing components and improve the safety during the disassembly process; As a further improvement of the present technical solution, a locking rod is provided for sliding within the arc-shaped groove, the locking rod is movably inserted into the inner side of the top pressure plate, and the end of the locking rod away from the circular plate points to the center rod.

[0011] As a further improvement of the present technical solution, a ratchet is fixedly sleeved on the outer surface of the center rod, and the locking rod is engaged in the tooth gap of the ratchet.

[0012] As a further improvement of the present technical solution, a return spring is provided on the outer surface of the push rod, and one end of the return spring away from the push rod is fixedly connected to the inner wall of the top pressure plate.

[0013] Since the position of the top pressure plate placed on the extension platform by the transport mechanism is uncertain, a slight deviation may cause the cross plate to be unable to slide into the track, thereby making it impossible to press the cross plate downward. In order to ensure that the top pressure plate is in a centered position, a sliding groove is provided on the upper surface of the extension platform. The sliding groove is provided in two pieces and is symmetrically arranged with respect to the axis of the extension platform. The hook slides along the sliding groove. As a further improvement of the present technical solution, the cross section of the slide groove is designed to be a right-angled trapezoid, and the two slide grooves are arranged opposite to the track.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In this type of automatic palletizer for finished cartons, a stabilizing component is set on the upper part of the carton stack, and a pull-down component is used to drive the stabilizing component to unfold, so as to restrain and lock the carton stack, thereby improving the stability of the carton stack and preventing it from tilting and falling during transportation.

[0015] 2. In this type of automatic palletizer for finished cartons, a reset component is set. After the movable hook is manually removed, the reset component will be triggered when the transport mechanism clamps the top pressure plate, thereby reeling in the rope and moving the cross plate upward. At this time, there are no workers around, eliminating the danger and achieving the purpose of disassembling and stabilizing the component.

[0016] 3. In this type of automatic palletizer for finished cartons, a slide is provided. When the top pressure plate is placed on the extension table, combined with the right-angled trapezoidal design of the slide, even if the hook position is slightly offset, it can still slide along the inclined inner wall of the slide to the middle position of the bottom of the slide, thus achieving centering of the position. The hydraulic rod pushes the top pressure plate to slide along the slide to dock with the pull-down assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the transfer mechanism of the present invention; Figure 3 It is a structural schematic diagram of the palletizing positioning assembly of the present invention; Figure 4 It is a structural schematic diagram of the extension platform of the present invention; Figure 5 It is a schematic structural diagram of the stabilizing assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the cooperation between the stabilizing component and the resetting component of the present invention; Figure 7 It is a structural schematic diagram of the hook of the present invention; Figure 8 It is a structural schematic diagram of the pull-down assembly of the present invention; Figure 9 It is a structural schematic diagram of the reset component of the present invention.

[0018] The meaning of each number in the figure is: 1. Conveying mechanism; 2. Handling mechanism; 3. Transfer mechanism; 4. Palletizing positioning assembly; 5. Stabilizing assembly; 6. Pull-down assembly; 7. Reset assembly; 8. Slide; 9. Palletizing seat; 41. Lifting gantry; 42. Lifting platform; 43. Extension platform; 44. Hydraulic rod; 45. Horizontal positioning clamp; 46. Vertical positioning clamp; 51. Placement table; 52. Top pressure plate; 53. Center rod; 54. Guide tube; 55. Horizontal plate; 56. String; 57. Spring; 58. Hook; 59. Movable hook; 510. Hanging plate; 61. Side plate; 62. Track; 63. Support plate; 64. Torsion spring; 71. Push rod; 72. Circular plate; 73. Arc groove; 74. Locking rod; 75. Ratchet; 76. Return spring. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The existing cartons are loose after stacking due to creases, and the stacking stability is poor. Slight vibration of the device during transportation will cause the stacked cartons to fall during transportation.

[0021] For this purpose, the present invention provides an automatic palletizing machine for finished cartons. Figure 1 and Figure 2 As shown, it includes a conveying mechanism 1, a handling mechanism 2 and a transfer mechanism 3. The handling mechanism 2 is located at the junction of the conveying mechanism 1 and the transfer mechanism 3. A stacking seat 9 is provided on the upper part of the transfer mechanism 3. During operation, the product, that is, the cartons, are moved along the conveying mechanism 1 to the transfer mechanism 3. At this time, the transport mechanism 2 operates to pick up the stacked and bundled cartons, and then places them on the upper part of the stacking seat 9, and stacks them to achieve single-time multi-transfer, thereby realizing automatic stacking of cartons. When the number of cartons stacked on the stacking seat 9 reaches a predetermined value, the transfer mechanism 3 starts to operate and transports the stacking seat 9 together with the cartons to the next process.

[0022] For further information, see Figure 2 and Figure 3 As shown, since the cartons are not neatly placed on the stacking seat 9 during the stacking process, the cartons will deviate and fall easily during the stacking process. In order to ensure the neatness of the cartons stacking, each layer is positioned. In this application, a stacking positioning component 4 is provided on the side of the transfer mechanism 3. The stacking positioning component 4 acts on the cartons stacked on the stacking seat 9. Specifically, the stacking positioning assembly 4 includes a lifting gantry 41 arranged on the side of the transfer mechanism 3, a lifting platform 42 is arranged on the inner side of the lifting gantry 41, an extension platform 43 is fixedly connected to the side of the lifting platform 42, a hydraulic rod 44 is arranged on the upper part of the lifting platform 42, a horizontal positioning clamp 45 is arranged on the side of the extension platform 43 away from the lifting platform 42, and a longitudinal positioning clamp 46 is arranged on the inner side of the horizontal positioning clamp 45.

[0023] During operation, when the transport mechanism 2 places the cartons on the stacking seat 9 and fills up a layer, the lifting gantry 41 runs, driving the lifting platform 42 to rise to a position flush with the current carton layer, and then the horizontal positioning clamp 45 moves toward the middle to clamp and position the carton layer in the horizontal direction, and then the longitudinal positioning clamp 46 moves toward the middle to clamp and position the carton layer in the longitudinal direction, and the horizontal positioning and longitudinal positioning are carried out simultaneously, so that the cartons placed on the same layer are gathered to the middle, so that the cartons are neatly placed on the stacking seat 9.

[0024] For further information, see Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, since the creases on the cartons make them loose after folding, stacking multiple cartons on the stacking seat 9 will amplify this looseness, resulting in low stability of the stacked cartons. In order to improve the stability of the cartons, the present application adopts a stabilizing component 5 provided on the side of the transport mechanism 2, and a pull-down component 6 provided on the upper part of the stacking positioning component 4; Specifically, the stabilizing component 5 includes a placing table 51 arranged on the side of the conveying mechanism 2, and a top pressure plate 52 is arranged on the upper part of the placing table 51. The top pressure plate 52 is composed of two horizontal bars and two vertical bars to form an I-shaped structure. The inner wall of the top pressure plate 52 is rotatably connected to the center rod 53, and the outer surface of the center rod 53 is wrapped with a rope 56. The end of the rope 56 away from the center rod 53 is fixedly connected to the horizontal plate 55, and the bottom end of the horizontal plate 55 is fixedly connected to the hook 58. The bending part of the hook 58 is rotatably connected to the movable hook 59. There is a spring between the hook 59 and the hook 58 for reset. The side of the stacking seat 9 is fixedly connected to the hanging plate 510. The side end of the top pressure plate 52 is fixedly connected to the guide tube 54. The guide tube 54 is designed as a 90-degree bent tube. The end of the guide tube 54 away from the top pressure plate 52 abuts against the upper surface of the cross plate 55. The rope 56 passes through the inside of the guide tube 54. The middle part of the outer surface of the center rod 53 is fixedly sleeved with a spring spring 57. The end of the spring spring 57 away from the center rod 53 is fixedly connected to the inner wall of the top pressure plate 52. Secondly, the pull-down assembly 6 includes a side plate 61 fixedly connected to the upper surface of the extension platform 43. A track 62 is formed on the outer surface of the side plate 61 facing the top pressure plate 52. A support plate 63 is rotatably connected to the inner wall of the track 62. A torsion spring 64 is sleeved on the outer surface of the rotating shaft of the support plate 63. The end of the torsion spring 64 away from the rotating shaft is fixedly connected to the inner wall of the track 62. When the cartons on the stacking seat 9 are stacked to the specified number, the transport mechanism 2 clamps the two sides of the top pressure plate 52 to move the entire structure to the upper surface of the extension platform 43, and then the hydraulic rod 44 pushes it above the stacked cartons. During the pushing process, the cross plate 55 is stuck in the track 62 and slides along the track 62. When the top pressure plate 52 is pushed to the position just above the cartons, it stops, the hydraulic rod 44 retracts, and then the lifting gantry 41 drives the lifting platform 42 to fall. During the falling process of the extension plate, the side plates 61 will push the cross plate 55 and drive the cross plate 55 to move downward. The downward movement of the cross plate 55 will pull the rope 56, and the center rod 53 will rotate under the pull of the rope 56 to release the rope 56. At the same time, the rotation of the center rod 53 will also squeeze the spring 57, so that the spring 57 stores elastic potential energy. When the cross plate 55 is pushed close to the stacking seat 9, the hook 58 at the bottom of the cross plate 55 will first contact the hanging plate 510. When the lifting gantry 41 stops pushing the cross plate 55, it starts to move upward, and the support plate 63 moves up and away from the cross plate 55 to generate a mutual thrust, which will push the support plate 63 to rotate and drive the torsion spring 64 to rotate. After the support plate 63 rises and moves away from the cross plate 55, the torsion spring 64 rebounds and drives the support plate 63 to return to its original position. Because the movable hook 59 is clamped on the bottom of the hanging plate 510 and has a pulling limit effect, and at the same time, cooperates with the rebound force of the spring 57, forcing the top pressure plate 52 to press the carton. The rope 56 placed on the side of the stacked cartons also has a binding force, thus achieving the effect of fixing the stacked cartons, improving the stability of the carton stack, and avoiding tilting and falling during transportation.

[0025] In addition, see Figure 5 、 Figure 6 and Figure 9 As shown, since the carton stack needs to be processed further after being transported to the designated location, the carton stack has a certain height, which makes it inconvenient to disassemble the stabilizing component 5. Moreover, after the movable hook 59 is disassembled, the power of the rope 56 recovered is likely to drive the hook 58 to swing, which is dangerous. In order to facilitate the disassembly of the stabilizing component 5 and improve the safety during the disassembly process, the present application adopts a reset component 7 provided in the middle of the top pressure plate 52, and the reset component 7 acts on the center rod 53. When the locking cam 75 is in the unlock state, the locking cam 74 is in the unlock state, and the lock cam 75 is in the unlock state, and the winch cam 72 ...

[0026] When locking cam 751 is in the state of being grasped, the locking cam 74 of latch 7 is in the state of being grasped, and the position of locking cam 751 in the state of being grasped and locked in the state of being grasped will be increased. When the locking cam 73 is released, the locking cam 73 is released, and the locking cam 73 is released, and the locking cam 73 is released, so that the locking cam 73 is released and the locking cam 73 is released.

[0027] In addition, see Figure 2 、 Figure 3 and Figure 4 As shown, since the position of the top pressure plate 52 placed on the extension platform 43 by the transport mechanism 2 is not fixed, a slight deviation may cause the cross plate 55 to be unable to slide into the track 62, thereby making it impossible to press the cross plate 55 downward. In order to ensure that the top pressure plate 52 is in the center position, the present application adopts a sliding groove 8 on the upper surface of the extension platform 43; Specifically, two slide grooves 8 are provided and are symmetrically arranged with respect to the axis of the extension platform. The hook 58 slides along the slide grooves 8. The cross section of the slide grooves 8 is designed to be a right-angled trapezoid. The two slide grooves 8 are arranged opposite to the track 62. During operation, the transport mechanism 2 clamps the top pressure plate 52 and places it on the upper surface of the extension platform 43. When the placement position of the transport mechanism 2 is slightly offset, the hook 58 does not fall directly into the bottom of the slide 8 in conjunction with the right-angled trapezoidal design of the slide 8. When it falls on the oblique side of the slide 8, it will also slide into the bottom of the slide 8 under the action of its own gravity, thereby achieving the centering of the position. Then, when the hydraulic rod 44 pushes the top pressure plate 52, the hook 58 will slide along the slide 8 to achieve the guiding function, making it easier for the cross plate 55 to slide into the track 62, thereby achieving the clamping connection between the stable component 5 and the pull-down component 6.

[0028] In summary, by setting the cooperation of the stabilizing component 5 and the pull-down component 6 to lock the cardboard stack, and using the reset component 7 to achieve the safe reset of the stabilizing component 5, it is effectively solved that the existing cartons are loose after stacking due to creases, the stacking stability is poor, and the slight shaking of the device during transportation will make the stacked cartons at risk of falling during transportation.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic palletizer for finished cartons, comprising a conveying mechanism (1), a handling mechanism (2) and a transfer mechanism (3), wherein a palletizing seat (9) is provided on the upper portion of the transfer mechanism (3), and characterized in that: A stacking positioning component (4) is provided on the side of the transfer mechanism (3), a stabilizing component (5) is provided on the side of the transport mechanism (2), and a pull-down component (6) is provided on the upper portion of the stacking positioning component (4); The stacking positioning assembly (4) includes a lifting gantry (41) arranged on the side of the transfer mechanism (3), a lifting platform (42) is arranged on the inner side of the lifting gantry (41), and an extension platform (43) is fixedly connected to the side of the lifting platform (42); The stabilizing component (5) includes a placement platform (51) arranged on the side of the transport mechanism (2), a top pressure plate (52) is arranged on the upper part of the placement platform (51), the inner wall of the top pressure plate (52) is rotatably connected to the center rod (53), the outer surface of the center rod (53) is wrapped with a rope (56), the end of the rope (56) away from the center rod (53) is fixedly connected to the horizontal plate (55), and the bottom end of the horizontal plate (55) is fixedly connected to the hook (58); A reset assembly (7) is provided in the middle of the top pressure plate (52), and the reset assembly (7) includes a push rod (71) movably inserted in the middle of the outer surface of the top pressure plate (52), and one end of the push rod (71) extending into the interior of the top pressure plate (52) is fixedly connected to a circular plate (72), and an arc groove (73) is provided on the upper surface of the circular plate (72), and a locking rod (74) is provided in the inner limit sliding of the arc groove (73), and the locking rod (74) is movably inserted in the inner side of the top pressure plate (52), and the end of the locking rod (74) away from the circular plate (72) points to the center rod (53), and a ratchet (75) is fixedly provided on the outer surface of the center rod (53), and the locking rod (74) is engaged in the tooth gap of the ratchet (75).

2. The automatic palletizer for finished cartons according to claim 1, characterized in that: A hydraulic rod (44) is provided on the upper portion of the lifting platform (42), a transverse positioning clamp (45) is provided on the side of the extension platform (43) away from the lifting platform (42), and a longitudinal positioning clamp (46) is provided on the inner side of the transverse positioning clamp (45).

3. The automatic palletizer for finished cartons according to claim 1, characterized in that: The top pressure plate (52) is composed of two horizontal bars and two vertical bars to form an I-shaped structure. The side of the stacking seat (9) is fixedly connected to a hanging plate (510). The side end of the top pressure plate (52) is fixedly connected to a guide tube (54). The guide tube (54) is designed as a 90-degree bent tube. The end of the guide tube (54) away from the top pressure plate (52) is in contact with the upper surface of the horizontal plate (55), and the rope (56) passes through the inside of the guide tube (54).

4. The automatic palletizer for finished cartons according to claim 3, characterized in that: The hook (58) is rotatably connected to a movable hook (59) at its bend, and a spring is provided between the movable hook (59) and the hook (58) for reset. A spring spring (57) is fixedly sleeved in the middle of the outer surface of the center rod (53), and one end of the spring spring (57) away from the center rod (53) is fixedly connected to the inner wall of the top pressure plate (52).

5. The automatic palletizer for finished cartons according to claim 1, characterized in that: The pull-down assembly (6) includes a side plate (61) fixedly connected to the upper surface of the extension platform (43), a track (62) is provided on the outer surface of the side plate (61) facing the top pressure plate (52), the inner wall of the track (62) is rotatably connected to a support plate (63), the outer surface of the rotating shaft of the support plate (63) is sleeved with a torsion spring (64), and the end of the torsion spring (64) away from the rotating shaft is fixedly connected to the inner wall of the track (62).

6. The automatic palletizer for finished cartons according to claim 1, characterized in that: A return spring (76) is provided on the outer surface of the push rod (71), and one end of the return spring (76) away from the push rod (71) is fixedly connected to the inner wall of the top pressure plate (52).

7. The automatic palletizer for finished cartons according to claim 1, characterized in that: A sliding groove (8) is provided on the upper surface of the extension platform (43), and the sliding groove (8) is provided with two grooves and is symmetrically arranged about the axis of the extension platform (43), and the hook (58) slides along the sliding groove (8).

8. The automatic palletizer for finished cartons according to claim 7, characterized in that: The cross section of the chute (8) is designed to be a right-angled trapezoid, and the two chute (8) are arranged facing the track (62).

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