Safety protection mechanism for tobacco baler and tobacco baler

Abstract

The utility model discloses a safety protection mechanism for a tobacco baler and the tobacco baler. The safety protection mechanism for the tobacco baler comprises a base, a trigger part and a protection arm. The base is arranged on a pressing plate of the tobacco baler and provided with pressing and abutting ends arranged below the pressing plate at intervals. The trigger part is arranged at the pressing end and is electrically connected with a driving mechanism for driving the pressing plate to slide up and down in the tobacco baler; the protection arm is arranged between the pressing plate and the pressing abutting end in a sliding mode and abuts against the triggering part, when the protection arm is pushed and slides upwards relative to the triggering part, the protection arm is separated from the triggering part, and at the moment, the triggering part controls the driving mechanism to stop driving. According to the scheme, workers can be prevented from being accidentally crushed by the pressing plate, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco baling machines, in particular to a safety protection mechanism for a tobacco baling machine and the tobacco baling machine. Background Art

[0002] The tobacco baler is a device used to squeeze loose tobacco leaves into blocks for packaging.

[0003] Publication No. CN203467645U discloses a tobacco baling machine, which first loads two ropes into two rope grooves of a bottom plate, with the ends of the two ropes exposed from the rope grooves of the bottom plate, then places a box on the bottom plate, and finally loads tobacco leaves into the box until the initial loading of the tobacco leaves is completed; then the pressing plate is driven to move by a driving mechanism, that is, the pressing plate is driven by a hydraulic cylinder to compress the tobacco leaves in the box to a specified size; then the entire tobacco leaves compressed by the pressing plate are exposed from the box by a lifting device; then one end of the two ropes are passed through the rope grooves of the pressing plate and tied to the other end of the corresponding rope to firmly bundle the tobacco leaves; then the pressing plate rises and leaves the tobacco leaves, and the packaging is completed.

[0004] However, if a worker accidentally touches the switch to turn on the equipment while working, the pressure plate may move downward before the worker's hand leaves the pressure plate, which may press the worker's arm and cause accidental injury to the worker, posing a safety hazard. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and propose a safety protection mechanism for a tobacco baler and a tobacco baler, so as to solve the technical problem in the prior art that when a worker accidentally touches the switch to turn on the equipment while working, the worker's hand has not yet left the pressing plate, but the pressing plate moves downward and is likely to press the worker's arm, causing accidental injury to the worker and posing a safety hazard.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] In a first aspect, the utility model provides a safety protection mechanism for a tobacco baler, comprising:

[0008] A base is provided on a pressing plate of a tobacco baler and has a pressing end spaced below the pressing plate;

[0009] a trigger portion, provided at the pressing end and electrically connected to a driving mechanism in the tobacco baler that drives the pressing plate to slide up and down; and

[0010] The protective arm is slidably arranged between the pressure plate and the pressing end and abuts the trigger part. When the protective arm is pushed and slides upward relative to the trigger part, the protective arm is separated from the trigger part. At this time, the trigger part controls the driving mechanism to stop driving.

[0011] In some embodiments, the safety protection mechanism for the tobacco baler further includes a carrier and a movable arm, wherein the carrier is fixed to the end of the rope groove of the pressing plate, the movable arm and the base are respectively provided on the carrier, and the movable arm can move up and down relative to the pressing plate;

[0012] The movable arm extends in the up-down direction, the protective arm is connected to the lower end of the movable arm, and is spaced below the pressure plate when pressed against the pressing end.

[0013] In some embodiments, when the movable arm moves in the up-down direction, it has an initial position in which the protective arm is pressed against the pressing end, and a protective position in which the protective arm is separated from the pressing end;

[0014] The safety protection mechanism for the tobacco baler further includes a reset elastic member, which is arranged between the carrier and the movable arm and is used to drive the movable arm to reset from the protection position to the initial position.

[0015] In some embodiments, the carrier is provided with a mounting channel along the up-down direction;

[0016] The reset elastic member is a reset spring, which is installed in the installation channel. One end of the movable arm extends into the installation channel and is connected to the reset spring.

[0017] In some embodiments, the carriers are provided in two groups, and the two groups of the carriers are located at both ends of the protective arm;

[0018] There are two movable arms and two return springs respectively. The two return springs are respectively placed in the two installation channels. Correspondingly, the two movable arms are respectively connected to the two return springs.

[0019] In some embodiments, the carrier is provided with a fixing portion, and the base is provided with a plurality of matching portions spaced apart in the vertical direction, each matching portion being selectively matched with the fixing portion to fix the base to the carrier;

[0020] Wherein, the pressing end is located at the lower end of the base.

[0021] In some embodiments, the fixing portion is a fixing screw hole provided on the carrier, the matching portion is a matching hole provided on the base, and the matching holes are provided in multiple groups along the up and down directions;

[0022] The safety protection mechanism for the tobacco baler also includes a fixing bolt, which can be selectively passed through the matching hole and screwed into the fixing screw hole.

[0023] In some embodiments, the trigger portion is two electrical connection terminals provided at the pressing end, the two electrical connection terminals are provided on the control circuit of the driving mechanism, and switch the driving mechanism to the standby state when conducting;

[0024] The safety protection mechanism for the tobacco baler also includes an electrical conductor, which is arranged on the side of the protection arm close to the pressing end and is opposite to the two electrical connection terminals, and conducts the two electrical connection terminals when the protection arm is pressed against the pressing end.

[0025] In some embodiments, a receiving groove is recessed on the upper side of the pressing end, and at least one side of the receiving groove in the extending direction of the protective arm is open, and the two electrical connection terminals are placed in the receiving groove.

[0026] In a second aspect, the present invention further provides a tobacco baler, which includes a safety protection mechanism for a tobacco baler as described in any one of the above items.

[0027] Compared to the prior art, the safety protection mechanism for tobacco balers provided by the present invention, when applied to a tobacco baler, first passes the baling rope through the rope groove on the base plate, and then places the tobacco leaves on the base plate. Because the protective arm can move downward under its own weight, it initially presses against the pressing end of the base, thereby maintaining the triggering portion in a triggered state. At this time, the control unit of the drive mechanism is in a standby state and can be turned on and operated after power is connected. In this way, after placing the tobacco leaves on the base plate, the power supply of the control unit of the drive mechanism can be connected, and a command to drive the pressing plate downward can be input to compress the tobacco leaves.

[0028] However, if the drive mechanism is accidentally powered on, but the worker's arm is still under the pressing plate, the pressing plate will simultaneously move downward with the protective arm, which is spaced below the pressing plate, causing the protective arm to interfere with the worker's arm first. Consequently, under the action of the worker's arm, the protective arm quickly moves upward and away from the pressing end, interrupting the triggering of the trigger unit and causing the drive mechanism's control unit to immediately switch to the off-circuit state. The pressing plate stops moving downward, preventing harm to the worker. After the worker removes their arm, the protective arm, under its own weight, presses against the pressing end again, switching the trigger unit to the triggered state. This allows the drive mechanism's control unit to turn on again, continuing to execute the command to drive the pressing plate downward, compacting the tobacco leaves and improving packaging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is a schematic structural diagram of a tobacco baler provided by an embodiment of the present utility model;

[0030] Figure 2 yes Figure 1 Schematic diagram of the structure of the intermediate pressure plate and the safety protection mechanism for the tobacco baler;

[0031] Figure 3 yes Figure 2 Schematic diagram of the middle base and trigger part;

[0032] Figure 4 yes Figure 2 Exploded view of the intermediate pressure plate and safety protection mechanism for the tobacco baler;

[0033] Figure 5 yes Figure 2 Circuit diagram of the safety protection mechanism for tobacco leaf baling machine;

[0034] Figure 6 yes Figure 2 Schematic diagram of the middle movable arm, protective arm and reset elastic member.

[0035] Description of reference numerals:

[0036] 1. Movable arm; 2. Base; 21. Pressing end; 21a. Accommodating groove; 22. Matching portion; 22a. Matching hole; 3. Trigger portion; 31. Electrical connection terminal; 4. Protective arm; 41. Electrical conductor; 5. Carrier; 5a. Mounting channel; 51. Fixing portion; 51a. Fixing screw hole; 6. Reset elastic member; 61. Reset spring; 7. Fixing bolt; 8. Frame; 8a. Feed side; 81. Bottom plate; 9. Pressing plate; 10. Driving mechanism. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] In order to solve the technical problem in the prior art that when a worker accidentally touches the switch to turn on the equipment while working, the worker's hand has not yet left the pressure plate, but the pressure plate moves downward and is likely to press the worker's arm, causing accidental injury to the worker and posing a safety hazard, the utility model provides a safety protection mechanism for a tobacco baling machine, which can prevent the worker from being crushed by the pressure plate and eliminate safety hazards.

[0039] It should be noted that the safety protection mechanism for tobacco balers described in the present invention is used for but not limited to tobacco balers, etc. For the sake of convenience, in the present invention, only the application of the safety protection mechanism for tobacco balers to tobacco balers is taken as an example for explanation. The principle of applying the safety protection mechanism for tobacco balers to other types of equipment is essentially the same as that applied to tobacco balers, and will not be described in detail here.

[0040] See also Figures 1 to 3 , Figures 1 to 3 This is a structural schematic diagram of a safety protection mechanism for a tobacco baler in one embodiment of the present invention. The safety protection mechanism for a tobacco baler includes a base 2, a trigger portion 3 and a protective arm 4; the base 2 is arranged on the pressure plate 9 of the tobacco baler, and has a pressing end 21 spaced below the pressure plate 9; the trigger portion 3 is arranged at the pressing end 21, and is electrically connected to a driving mechanism 10 in the tobacco baler that drives the pressure plate 9 to slide up and down; the protective arm 4 is slidably arranged between the pressure plate 9 and the pressing end 21, and abuts against the trigger portion 3. When the protective arm 4 is pushed and slides upward relative to the trigger portion 3, the protective arm 4 disengages from the trigger portion 3. At this time, the trigger portion 3 controls the driving mechanism 10 to stop driving.

[0041] When the safety protection mechanism for a tobacco baler provided by the present invention is applied to a tobacco baler, the baling rope is first passed through the rope groove on the bottom plate 81, and then the tobacco leaves are placed on the bottom plate 81. Because the protective arm 4 can move downward under the action of its own weight, the protective arm 4 initially presses against the pressing end 21 of the base 2, thereby maintaining the trigger part 3 in the triggered state; at this time, the control unit of the drive mechanism 10 is in a standby state and can be turned on and operated after connecting to the power supply. In this way, after the tobacco leaves are placed on the bottom plate 81, the power supply of the control unit of the drive mechanism 10 can be connected, and a command to drive the pressing plate 9 to move downward can be input to compress the tobacco leaves.

[0042] When the drive mechanism 10 is accidentally connected to the power supply, but the staff member's arm is still placed under the pressing plate 9, the pressing plate 9 will synchronously drive the protective arm 4 to move downward during the downward movement, and the protective arm 4 is located below the pressing plate 9 at intervals, so that the protective arm 4 will first interfere with the staff member's arm. As a result, the protective arm 4 will quickly break away from the pressing end 21 under the action of the staff member's arm, causing the triggering of the trigger part 3 to be interrupted, causing the control unit of the drive mechanism 10 to immediately switch to the off-circuit state, and the pressing plate 9 will stop moving downward, without causing any harm to the staff member. After the staff member removes his arm, the protective arm 4 will again press against the pressing end 21 under the action of its own weight, and switch the trigger part 3 to the trigger state, so that the control unit of the drive mechanism 10 can be turned on again to continue to execute the instruction to drive the pressing plate 9 downward, compacting the tobacco leaves and improving the packaging efficiency.

[0043] It should be noted that the drive mechanism 10 can be configured as a telescopic motor; it can also be a combination of a hydraulic cylinder and a control unit. When the control unit is turned on and connected to power, it controls the oil tank to pump or extract hydraulic oil into the hydraulic cylinder. This is prior art and will not be described in detail here. Furthermore, the standby state of the drive mechanism 10 refers to a state in which all switches in its control circuit are closed, ready to start operation when power is connected. This is also prior art and will not be described in detail here. The trigger unit 3 is a switch in its control circuit that is closed when the trigger unit 3 remains in the triggered state.

[0044] In one embodiment, see Figure 4 The safety protection mechanism for the tobacco baler also includes a carrier 5 and a movable arm 1. The carrier 5 is used to be fixed to the end of the rope groove of the pressure plate 9. The movable arm 1 and the base 2 are respectively arranged on the carrier 5, and the movable arm 1 can move up and down relative to the pressure plate 9; the movable arm 1 extends in the up and down directions, and the protective arm 4 is connected to the lower end of the movable arm 1, and is placed below the pressure plate 9 when pressed against the pressing end 21.

[0045] In this embodiment, the protective arm 4 extends vertically and faces the end of the rope groove in the pressure plate 9. This allows the protective arm 4 to press against the pressing end 21 when the tobacco leaves are compacted, leaving a gap between the protective arm 4 and the pressure plate 9 that faces the end of the rope groove. This facilitates the insertion of a rope removal rod to remove the baling rope from the other side of the rope groove, improving convenience. It should be noted that the side of the tobacco baler corresponding to the end of the rope groove serves as the feed side 8a, from which tobacco leaves are fed onto the bottom plate 81.

[0046] In one embodiment, the movable arm 1 has an initial position in which the protective arm 4 is pressed against the pressing end 21 when it moves in the up and down directions, and has a protective position in which the protective arm 4 is separated from the pressing end 21; the safety protection mechanism for the tobacco baler also includes a reset elastic member 6, which is arranged between the carrier 5 and the movable arm 1, and is used to drive the movable arm 1 to reset from the protective position to the initial position.

[0047] In this embodiment, elastic potential energy is applied to the movable arm 1 by the reset elastic member 6, so that after the staff's arm is pulled out from under the pressure plate 9, the movable arm 1 can quickly drive the protective arm 4 to return to the position pressed against the pressing end 21 under the drive of the reset elastic member 6, thereby ensuring the stability of the conduction of the driving mechanism 10.

[0048] In one embodiment, the carrier 5 is provided with an installation channel 5a along the up and down direction; the reset elastic member 6 is a reset spring 61, the reset spring 61 is installed in the installation channel 5a, and one end of the movable arm 1 extends into the installation channel 5a and is connected to the reset spring 61.

[0049] In this embodiment, an installation channel 5a is provided on the carrier 5, and the reset elastic member 6 is provided in the form of a reset spring 61. The reset spring 61 applies elastic potential energy to the movable arm 1. The structure is simple and reliable, and the installation channel 5a can guide the movable arm 1, ensuring that the protective arm 4 is stably pressed against and triggers the above-mentioned triggering part 3.

[0050] In one embodiment, see Figure 6 There are two groups of carriers 5, and the two groups of carriers 5 are located at both ends of the protective arm 4; there are two movable arms 1 and two return springs 61 respectively, and the two return springs 61 are respectively placed in the two mounting channels 5a, and correspondingly, the two movable arms 1 are respectively connected to the two return springs 61.

[0051] In this embodiment, carriers 5 are provided at both ends of the protective arm 4, along with two sets of movable arms 1 and two sets of return springs 61, further enhancing the stability of the coordination between the protective arm 4 and the trigger portion 3. It should be understood that the protective arm 4 is located above the abutment end 21. Furthermore, it should be noted that, in one embodiment, the carriers 5 may be part of the pressure plate 9 or integrally formed with the pressure plate 9, positioned at both lateral ends of the pressure plate 9.

[0052] In one embodiment, the carrier 5 is provided with a fixing portion 51, and the base 2 is provided with a plurality of matching portions 22 spaced apart in the up and down directions. Each matching portion 22 can selectively cooperate with the fixing portion 51 to fix the base 2 to the carrier 5; wherein the pressing end 21 is located at the lower end of the base 2.

[0053] In this embodiment, the distance between the pressing end 21 and the pressure plate 9 can be adjusted by adjusting the position of the matching portion 22 that matches the fixing portion 51, so that the gap between the protective arm 4 and the pressure plate 9 when pressing against the pressing end 21 can be flexibly adjusted according to needs, thereby improving flexibility.

[0054] In one embodiment, the fixing portion 51 is a fixing screw hole 51a provided on the carrier 5, and the matching portion 22 is a matching hole 22a provided on the base 2, and multiple groups of matching holes 22a are provided along the up and down directions; the safety protection mechanism for the tobacco baler also includes a fixing bolt 7, which can be optionally passed through the matching hole 22a and screwed into the fixing screw hole 51a.

[0055] In this embodiment, the fixing bolts 7 are inserted through the mating holes 22a and screwed into the fixing screw holes 51a, thereby achieving a stable connection between the base 2 and the carrier 5, resulting in a simple and reliable structure. It should be noted that in one embodiment, each group of mating holes 22a is provided with two spaced-apart horizontally, and correspondingly, two fixing screw holes 51a and two fixing bolts 7 are provided.

[0056] In one embodiment, see Figures 3 to 5The trigger part 3 is two electrical connection terminals 31 provided at the pressing end 21. The two electrical connection terminals 31 are provided on the control circuit of the driving mechanism 10, and when the driving mechanism 10 is turned on, the driving mechanism 10 is switched to the standby state; the safety protection mechanism for the tobacco baler also includes an electrical conductor 41. The electrical conductor 41 is provided on the side of the protective arm 4 close to the pressing end 21, and is opposite to the two electrical connection terminals 31, and the two electrical connection terminals 31 are turned on when the protective arm 4 is pressed against the pressing end 21.

[0057] In this embodiment, when the guard arm 4 presses against the pressing end 21, the electrical conductor 41 connects to the two electrical connection terminals 31, closing the switch. This places the control circuit of the drive mechanism 10 in a standby state, allowing it to operate when the power is turned on. A wiring channel is provided in the base 2 to connect the two electrical connection terminals 31 to the control circuit of the drive mechanism 10.

[0058] In one embodiment, see Figure 3 A receiving groove 21 a is concavely provided on the upper side of the pressing end 21 , and the receiving groove 21 a is open on at least one side in the extending direction of the protective arm 4 , and the two electrical connection terminals 31 are placed in the receiving groove 21 a .

[0059] In this embodiment, the two electrical connection terminals 31 are placed in the accommodating grooves 21 a to prevent staff from accidentally touching the electrical connection terminals 31 , further improving safety performance, while not affecting the normal connection between the electrical conductor 41 on the protective arm 4 and the two electrical connection terminals 31 .

[0060] In addition, the present invention further provides a tobacco baler, which includes a safety protection mechanism for a tobacco baler as described in any one of the above. It should be noted that the detailed structure of the safety protection mechanism for a tobacco baler of the tobacco baler can be referred to the embodiment of the safety protection mechanism for a tobacco baler, and will not be repeated here; since the safety protection mechanism for a tobacco baler is used in the tobacco baler of the present invention, the embodiment of the tobacco baler of the present invention includes all technical solutions of all embodiments of the safety protection mechanism for a tobacco baler, and the technical effects achieved are also exactly the same, and will not be repeated here.

[0061] It should be noted that, in one embodiment, the tobacco baler includes a frame 8, a pressing plate 9, and a drive mechanism 10. The frame 8 defines a baling space with an upper opening forming a feed port. The pressing plate 9 is disposed on the frame 8 above the baling space and is movable in the vertical direction. The drive mechanism 10 is disposed on the frame 8 and is operatively connected to the pressing plate 9 to drive the pressing plate 9 in the vertical direction. The end of the feed port corresponding to the rope groove is designated as the feed side 8a. The protective arm 4 is located on the feed side 8a and is disposed transversely to the feed port.

[0062] In order to better understand the present invention, the following Figures 1 to 6 The technical solution of the utility model is described in detail:

[0063] When the drive mechanism 10 is accidentally connected to the power supply, but the staff member's arm is still placed under the pressing plate 9, the pressing plate 9 will synchronously drive the protective arm 4 to move downward during the downward movement, and the protective arm 4 is located below the pressing plate 9 at intervals, so that the protective arm 4 will first interfere with the staff member's arm. As a result, the protective arm 4 will quickly break away from the pressing end 21 under the action of the staff member's arm, causing the triggering of the trigger part 3 to be interrupted, causing the control unit of the drive mechanism 10 to immediately switch to the off-circuit state, and the pressing plate 9 will stop moving downward, without causing any harm to the staff member. After the staff member removes his arm, the protective arm 4 will press against the pressing end 21 again under the action of its own weight and the reset spring 61, and switch the trigger part 3 to the trigger state, so that the control unit of the drive mechanism 10 can be turned on again to continue to execute the instruction to drive the pressing plate 9 downward, compacting the tobacco leaves and improving packaging efficiency.

[0064] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A safety protection mechanism for a tobacco baler, characterized in that: include: A base is provided on a pressing plate of a tobacco baler and has a pressing end spaced below the pressing plate; a trigger portion, provided at the pressing end and electrically connected to a driving mechanism in the tobacco baler that drives the pressing plate to slide up and down; and The protective arm is slidably arranged between the pressure plate and the pressing end and abuts the trigger part. When the protective arm is pushed and slides upward relative to the trigger part, the protective arm is separated from the trigger part. At this time, the trigger part controls the driving mechanism to stop driving.

2. The safety protection mechanism for tobacco baling machine according to claim 1, characterized in that: The safety protection mechanism for the tobacco baler further includes a carrier and a movable arm, wherein the carrier is fixed to the rope groove end of the pressing plate, the movable arm and the base are respectively provided on the carrier, and the movable arm can move up and down relative to the pressing plate; The movable arm extends in the up-down direction, the protective arm is connected to the lower end of the movable arm, and is spaced below the pressure plate when pressed against the pressing end.

3. The safety protection mechanism for tobacco baling machine according to claim 2, characterized in that: When the movable arm moves in the up-down direction, it has an initial position in which the protective arm is pressed against the pressing end, and a protective position in which the protective arm is separated from the pressing end; The safety protection mechanism for the tobacco baler further includes a reset elastic member, which is arranged between the carrier and the movable arm and is used to drive the movable arm to reset from the protection position to the initial position.

4. The safety protection mechanism for tobacco baling machine according to claim 3, characterized in that: The carrier is provided with a mounting channel along the up and down directions; The reset elastic member is a reset spring, which is installed in the installation channel. One end of the movable arm extends into the installation channel and is connected to the reset spring.

5. The safety protection mechanism for tobacco baling machine according to claim 4, characterized in that: There are two groups of carriers, and the two groups of carriers are located at both ends of the protective arm; There are two movable arms and two return springs respectively. The two return springs are respectively placed in the two installation channels. Correspondingly, the two movable arms are respectively connected to the two return springs.

6. The safety protection mechanism for tobacco baling machine according to claim 2, characterized in that: The carrier is provided with a fixing portion, and the base is provided with a plurality of matching portions spaced apart in the vertical direction, each matching portion being selectively matched with the fixing portion to fix the base to the carrier; Wherein, the pressing end is located at the lower end of the base.

7. The safety protection mechanism for tobacco baling machine according to claim 6, characterized in that: The fixing portion is a fixing screw hole provided on the carrier, and the matching portion is a matching hole provided on the base, and the matching holes are provided in multiple groups along the vertical direction; The safety protection mechanism for the tobacco baler also includes a fixing bolt, which can be selectively passed through the matching hole and screwed into the fixing screw hole.

8. The safety protection mechanism for tobacco baling machine according to claim 1, characterized in that: The triggering part is two electrical connection terminals provided at the pressing end, the two electrical connection terminals are provided on the control circuit of the driving mechanism, and switch the driving mechanism to the standby state when conducting; The safety protection mechanism for the tobacco baler also includes an electrical conductor, which is arranged on the side of the protection arm close to the pressing end and is opposite to the two electrical connection terminals, and conducts the two electrical connection terminals when the protection arm is pressed against the pressing end.

9. The safety protection mechanism for tobacco baling machine according to claim 8, characterized in that: An accommodating groove is concavely provided on the upper side of the pressing end. The accommodating groove is open on at least one side in the extending direction of the protective arm. The two electrical connection terminals are placed in the accommodating groove.

10. A tobacco baler, characterized in that: It comprises a safety protection mechanism for a tobacco baler as described in any one of claims 1 to 9.

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