Article processing machine with inspection equipment

Abstract

An inspection system (8) is described for an article processing machine (1) that packages pourable food products and has an isolation chamber (5) that defines an internal environment (6) from an external environment (7). The inspection system (8) comprises at least an isolation housing (29) that is attached to the isolation chamber (5) and designed to project into the internal environment (6). The isolation housing (29) includes a cavity (32) that is designed to be fluidly isolated from the internal environment (6). The inspection system (8) further comprises a camera (32) at least partially disposed within the cavity (31).

Description

Technical Field

[0006]

[0001] The present invention relates to an inspection system for an article processing machine for packaging injectable food, and more particularly to an inspection system for inspecting the internal environment of an article processing machine.

[0002] Advantageously, the present invention further relates to an article processing machine for packaging injectable food having an inspection system for inspecting the internal environment of the article processing machine.

Background Art

[0003] It is known that pourable food is packaged in a container such as a bottle in an automatic article processing machine, and the container is closed by respective closures after packaging the pourable food in the container.

[0004] Such an article processing machine includes at least an isolation chamber that isolates the internal environment from the external environment, and one or more processing devices required for packaging injectable substances in the internal environment while the internal environment is maintained under controlled conditions.

[0005] Typical known processing devices include, for example, a filling device for filling a container with an injectable food product, a capping device for attaching a closure onto the filled container, a conveying device for conveying the container or the closure attached onto the container, a sterilization device for sterilizing the container or the closure, a blow molding device for forming a container from a preform, and the like.

[0006] It is often necessary to monitor the packaging process by visual inspection and / or by sensors associated with the changing processing equipment. This may include inspection of the container and / or closure and / or processing equipment functionality. Visual inspection may be performed, for example, by an operator inspecting the internal environment and packaging process through an inspection window. Sensors may be adapted to detect, for example, defects in the container or other possible problems related to the filling process, and may be associated with components of the processing equipment and may be present in considerable numbers.

[0007] A disadvantage is that visual inspection is impossible for all areas within the internal environment.

[0008] Another drawback is that the use of sensors increases the complexity of the operation of the item processing equipment, which becomes increasingly apparent as more sensors are required.

[0009] Therefore, it is desirable in this field to provide means that can enable improvements to known article processing equipment. [Disclosure of the Invention] [Problems that the invention aims to solve]

[0010] Therefore, an object of the present invention is to provide a means to overcome at least one of the above-mentioned drawbacks in a simple and low-cost manner. [Means for solving the problem]

[0011] In particular, an object of the present invention is to provide a means for inspecting areas of article processing machines for packaging injectable food products that are difficult to inspect.

[0012] Korean Published Patent No. 2016-0128603 discloses a bottle filling liquid inspection device that effectively inspects for foreign matter mixed in the filling liquid using centrifugal force. U.S. Patent Application Publication 2006 / 283145 discloses a beverage bottling plant for filling bottles with liquid beverage material, which has an inspection device for inspecting bottles.

[0013] Advantageously, an object of the present invention is also to provide an article processing machine for packaging injectable food in order to overcome at least one of the above-mentioned drawbacks in a simple and low-cost manner.

[0014] According to the present invention, the article processing apparatus described in claim 1 is provided.

[0015] Preferred non-limiting embodiments are described in claims that are directly or indirectly dependent on claim 1. [Brief explanation of the drawing]

[0016] Non-limiting embodiments of the present invention will be described by reference to the accompanying drawings:

[0017] [Figure 1] Figure 1 is a schematic top view of an article processing machine having at least one inspection system according to the present invention, with parts removed for clarity. [Figure 2] Figure 2 is a perspective and schematic view of the details of the material handling machine shown in Figure 1, with parts removed for clarity. [Figure 3] Figure 3 is an exploded view of the machine inspection system according to the present invention, with parts removed for clarity. [Figure 4] Figure 4 is a detailed cross-sectional view of an article processing machine with parts removed for clarity. [Figure 5] Figure 5 is a detailed cross-sectional view of an article processing machine with parts removed for clarity. [Figure 6] Figure 6 is a perspective view of the inspection system, with parts removed for clarity.

Best Mode for Carrying Out the Invention

[0018] Reference numeral 1 in FIG. 1 generally indicates an article handling machine, particularly an automatic article handling machine, for packaging injectable foods such as carbonated liquids (e.g., sparkling water, soft drinks, and beer), non-carbonated liquids (including still water, juice, tea, sports drinks, wine, milk, etc.), emulsions, and beverages containing pulp.

[0019] Particularly, the article handling machine 1 may be configured to handle articles such as the following. - Containers 2, such as bottles, jars, containers, utensils, etc., particularly containers made of base parts such as glass, paper or cardboard, plastic, aluminum, steel, and composite materials; and / or, - Closures 3, such as crown corks, screw caps, sports caps, stoppers, or the like, particularly those manufactured from various materials such as plastic and metal, and / or, - Precursors 4, such as preforms from which the containers 2 are formed.

[0020] More particularly, the article handling machine 1 - An isolation chamber 5 that isolates an internal (sterile and / or clean and / or ultra-clean) environment 6 from an external environment 7, and one or more processing devices configured to perform specific processing steps on articles within the internal environment 6, may be provided.

[0021] Advantageously, the article handling machine 1 also includes one or more inspection systems 8 configured to inspect regions within the internal environment 6 (e.g., processing devices and / or parts of articles (containers 2 and / or closures 3 and / or precursors 4)).

[0022] Particularly, each inspection system 8 may be designed to inspect regions within the internal environment 6 that are critical and / or difficult to access.

[0023] According to a certain possible non-limiting embodiment, the inspection system 8 may be configured to monitor one or more of the following: the advancement of articles, the filling process (i.e., filling the container 2 with the injectable product), the capping process (i.e., attaching the closure 3 to the container 2), the transfer process of articles from a first part of one processing unit to a second part of one processing unit, the transfer process of articles from one processing unit to another processing unit, the transfer and / or advancement of the filled container 2, and the possibility of splashing of the injectable product from the container 2 and other parts.

[0024] More specifically, referring to Figure 1, the article processing machine 1 may include one or more of the following processing devices. - A transport device 12 configured to move the container 2 (continuously) along the forward path P within the internal environment 6 and / or isolation chamber 4, and / or - A filling device 13 is configured to be at least partially located within the internal environment 6 and to fill the container 2 with an injectable product while it is moving forward along at least the filling portion P1 of the forward path P, and / or - A capping device 14 configured to be at least partially located within an internal environment 6 and to attach a closure 3 to a container 2 while advancing along at least a capping portion P2 of a forward path P, in particular a capping device 14 in which the capping portion P2 is located downstream of a filling portion P1 along the forward path P.

[0025] Furthermore, the article processing machine 1 may include a control unit configured to control ambient conditions such as temperature and / or humidity and / or sterility and / or cleanliness and / or airflow (direction) within the internal environment 6.

[0026] According to a possible non-limiting embodiment, the article processing machine 1 includes one or more additional processing devices, for example, - A preheating oven 15 is at least partially located within the isolation chamber 5 and configured to preheat the precursor 4 within the isolation chamber 5, and / or - A molding device 16 configured to mold a container 2 from a precursor 4, and in particular located downstream of the preheating oven 15 and upstream of the filling device 13 along the forward path P, It may be provided.

[0027] Alternatively or additionally, the article processing apparatus 1 may also include a sterilizer configured to sterilize the container 2, in particular the sterilizer may be located upstream of the filling apparatus 13 along the forward path P.

[0028] More specifically, the isolation chamber 4 may include an inlet 17 and an outlet 18 designed to allow the supply and discharge of articles to and from the internal environment 6, respectively.

[0029] In the specific illustrated case, the inlet 17 is designed to allow the supply of the precursor 4 to the internal environment 6, and the outlet 18 is designed to allow the discharge of the filled and capped container 2.

[0030] According to possible embodiments not shown, the inlet 17 may be designed to allow the supply of an (empty) container 2 to the internal environment 6, and the outlet 18 may be designed to allow the discharge of a filled and capped container 2.

[0031] Furthermore, the isolation chamber 4 may be equipped with multiple walls 19 that partition the internal environment 6, and in particular, the isolation chamber 4 partitions the internal environment 6 from six sides and carries an inlet 17 and an outlet 18.

[0032] In particular, some walls 19 may have a (substantially) horizontal orientation, and some walls 19 may have a (substantially) vertical orientation.

[0033] More specifically, the transport device 12 may be configured to advance the precursor 4 from the inlet 17 to the intermediate station, and then advance the container 2 from the intermediate station to the outlet 18.

[0034] According to one possible alternative embodiment, the conveying device 12 can be designed to advance the container 2 from the inlet 17 to the outlet 18, and in particular, the conveying device 12 can be configured to receive the container 2 at the inlet 17 and discharge the container 2 at the outlet 18. According to such another embodiment, the conveying device 12 can be configured to advance the container 2 from the inlet 17 to the filling device 13, from the filling device 13 to the capping device 14, and from the capping device 14 to the outlet 18.

[0035] More specifically, the conveying device 12 may comprise one or more star-shaped wheels 20, three in the illustrated example, and / or one or more conveying carousels 21, each star-shaped wheel 20 and each conveying carousel 21 being rotatable around its respective axis of rotation A, which in particular has a vertical orientation, and each one is configured to advance the container 2 along each (arc-shaped) portion of the forward path P.

[0036] According to a possible non-limiting embodiment, one transport carousel 21 is associated with a filling device 13 and (at least partially) defines a filling portion P1, and / or one transport carousel 21 is associated with a capping device 14 and (at least partially) defines a capping portion P2, and / or one transport carousel 21 is associated with a molding device 16 and is configured to advance the precursor 4 along each molding portion P3 of the forward path P and to advance the container 2 along the transfer portion P4 of the forward path P.

[0037] Furthermore, the conveying device 12 may also include a conveyor 22 for advancing the precursor 4 along the preheating section P5 of the forward path P.

[0038] According to a preferred and non-limiting embodiment, at least one star-shaped wheel 20 is positioned upstream of each conveying carousel 21, and at least one star-shaped wheel 20 is positioned downstream of each conveying carousel 21 along the forward path P.

[0039] More specifically, the filling apparatus 13 may comprise a plurality of filling units (not shown, known as such) arranged within an internal environment 6 and configured to fill the container 2 with the injectable product as the container 2 advances along the filling section P1.

[0040] In particular, the filling units are arranged on each transport carousel 21, and moreover, the filling units are arranged at equal intervals with respect to their respective rotation axis A.

[0041] Preferably, each filling unit comprises a holding element, such as a gripping element or pedestal, designed to hold one container 2 at a time as it moves along the filling section P1, and a filling valve designed to selectively direct the injectable product to each container 2 as it moves along the filling section P1.

[0042] More specifically, each capping device 14 may comprise a plurality of capping units (known ones) configured to hold the container 2 and attach (and fasten) a closure to the container 2 as it advances along the capping portion P2.

[0043] Preferably, the capping units are arranged on each transport carousel 21, and in particular, are arranged at equal intervals around each rotation axis A.

[0044] More specifically, each capping unit may comprise a holding element, such as a gripping element or base, configured to hold one container 2 as it moves forward along the capping portion P2, and a capping head configured to attach and fasten one closure to each container 2.

[0045] Furthermore, each capping device 14 may include a supply unit configured to supply closures 3 to the capping unit. Additionally, the capping device 14 may further include a sterilization unit designed to sterilize the sterile closures 3 and direct the sterile closures 3 toward the supply unit.

[0046] More specifically, the supply unit may include a supply channel 22 (which partitions a portion of the internal environment 6) through which the closure 3 is supplied to the capping unit.

[0047] Furthermore, the molding apparatus 16 may include a plurality of molding units 24 arranged within an internal environment 6 and configured to mold a container 2 from a precursor 4 as the precursor 4 advances along the molding portion P3.

[0048] In particular, the molding units 24 may be arranged on each transport carousel 21, and may be arranged at equal intervals around each rotation axis A.

[0049] Referring particularly to Figures 1 to 7, each inspection system 8 comprises at least an isolation housing 29, which is designed and / or mounted to be attached to the isolation chamber 5, in particular to each wall portion 30 of the wall 19, and to the camera 31, in particular to a digital camera, and even to a specific digital video camera.

[0050] In particular, each isolation housing 29 is designed to protrude into and / or protrude into the internal environment 6 and comprises a fluidically isolated cavity 32 designed to be fluidically separated from the internal environment 6. More specifically, the cavity 32 may be designed to be fluidly connected to and / or fluidly connected to the external environment 7.

[0051] Advantageously, as particularly with reference to Figures 2 and 4, each camera 31 is at least partially located within its respective cavity 32.

[0052] In this way, the inspection system 8 can also be positioned to inspect narrow spaces or narrow spots in the internal environment 6, and the camera 31 has a good field of view of the area to be inspected or monitored.

[0053] More specifically, each camera 31 includes an optical system, and more particularly, a lens section 33 having an optical system with at least one lens.

[0054] Furthermore, each camera 31 may include a main part 34 that supports its respective lens portion 33 and has at least one (electronic) image acquisition device for acquiring images. In particular, the image acquisition device is designed to receive light propagating through the optical system.

[0055] Furthermore, each camera 31 may be equipped with one or more connection interfaces 35 to connect the camera 31 to external sources such as power supplies, computing devices, image editing devices, and other electronic devices.

[0056] According to a possible non-limiting embodiment, each camera 31 may include an image analysis unit that analyzes the images acquired by the camera 31, in particular, each image acquisition device, when in use.

[0057] Alternatively, or in addition to this, each camera 31 can be connected to an external image analysis unit.

[0058] More specifically, at least each lens portion 33 may be partially located within its respective cavity 32.

[0059] In this way, the separation housing 29 can be optimally utilized to improve the field of view of the camera 31 with respect to the area to be monitored or inspected.

[0060] Referring in more detail, particularly to Figures 1, 2, 4, and 5, each isolation housing 29 may be designed and / or mounted to the inner surface 36 of the isolation chamber 5, in particular to the inner surface 36 facing and / or partitioning the internal environment 6.

[0061] More specifically, each separation housing 29 may comprise a frame 37 having an opening 38, particularly an annular frame 37, and a transparent wall 39, particularly a transparent glass wall 39, covering the opening 38. In particular, the transparent wall 39 may have a circular shape.

[0062] In particular, each frame 37 and each transparent wall 39 are designed to define each cavity 32 and to fluidly separate the cavity 32 from the internal environment 6 and / or to fluidly separate the cavity 32 from the internal environment 6.

[0063] Furthermore, each camera 31, in particular its respective lens portion 33, and even each specific optical system may be designed to inspect their respective areas within the internal environment 6 through the transparent wall 39.

[0064] More specifically, each frame 37 may be designed to protrude and / or protrude from each wall portion 30 and / or protrude from the inner surface 36 into the inner environment 6.

[0065] Preferably, each frame 37 can define at least partially, and in particular at least laterally, each cavity 32.

[0066] More specifically, each frame 37 may extend along axis B (central and / or longitudinal). Preferably, each frame 37 has an annular, particularly circular, cross-section with respect to a cross-section perpendicular to axis B.

[0067] Preferably, each frame 37 may have a further opening 40 facing its respective opening 38, which allows each camera 31 to be at least partially positioned within its respective cavity 32.

[0068] Furthermore, each frame 37 may support its respective opening 38 and its respective opening 40 at its first and second ends, respectively, with the first and second ends facing each other with respect to the axis B.

[0069] More specifically, each frame 37 may be provided with a rim 41, which is located particularly at the first end of each frame and defines the respective opening 38. In particular, each transparent wall 39 abuts against the rim 41.

[0070] More specifically, each rim 41 may have a contact surface 42, and each transparent wall 39 may engage with the contact surface 42.

[0071] According to a possible non-limiting embodiment, each rim 41 may comprise an annular groove and an annular gasket 47 disposed within the annular groove. Preferably, each transparent wall 39 is pressed against each gasket 46, in particular to ensure a seal of each cavity 32 from the internal environment 6. Preferably, each gasket 46 comprises and / or defines at least a portion of its respective contact surface 42.

[0072] In this way, the operational compactness of the mechanical configuration of the components required to attach the camera 31 to the isolation chamber 5 is improved, while the risk of contamination of the internal environment 6 and / or damage to the camera 31 by any material present in the internal environment 6 is avoided.

[0073] Preferably, each separation housing 29 includes spacers 48 designed to be positioned and / or positioned between each transparent wall 39 and each wall portion 30. In particular, each spacer 48 is designed and / or applies a pressing force to each transparent wall 39, in particular to press each transparent wall 39 against each rim 41, and in particular to at least each gasket 47.

[0074] In particular, each spacer 48 may have an arc-shaped contour.

[0075] More specifically, each spacer 48 may contact the transparent wall 39 from its first end and contact the respective wall from its second end opposite the first terminal end.

[0076] The use of spacers 48 interposed between the transparent wall 39 and the wall portion makes it possible to minimize the number of mechanical components required to attach the camera 31 to the isolation chamber 5.

[0077] Referring particularly to Figures 4 and 5, each frame 37 may have a side wall 49 supporting each rim 41 (at the first end of the side wall 49), and in particular, each rim 41 may project radially inward from each side wall 49.

[0078] Furthermore, the side walls 49 separate each opening 40 at the second end of the side wall 49 that is opposite to each first end.

[0079] According to a preferred and non-limiting embodiment, each frame 37, in particular each side wall 49, may be provided with annular grooves 50 and annular gaskets 51 designed to contact and / or contact each wall portion 30. In particular, each gasket 51 seals each cavity 32 from the internal environment 6 (particularly at the interface between each frame 37 and each wall portion 30).

[0080] According to a preferred and non-limiting embodiment, each inspection system 8 also comprises a first fixing device 52 designed to secure each isolation housing 29 to the isolation chamber 5, particularly to each wall portion 30.

[0081] Referring particularly to Figures 2, 3, 6, and 7, each inspection system 8 may include a control device 55 coupled to its respective camera 31 and configured to control the position and / or orientation of its respective camera 31. In particular, the control device 55 can define and / or modify the area within the internal environment 6 that can be inspected by the camera 31 during use.

[0082] Preferably, each control device 55 is configured to control the position and / or orientation of each camera 31 in three dimensions.

[0083] According to a preferred and non-limiting embodiment, each control device 55 is also configured to support its respective camera 31.

[0084] Furthermore, the control device 55 may be connected and / or coupled to each wall portion 30, particularly by the coupling plate 56 of each inspection system 8.

[0085] More specifically, each control device 55 comprises a first support 57 connected to each camera 31, particularly each main part 34, and a second support 58 directly or indirectly connected to each wall 30 (by each coupling plate 56).

[0086] Preferably, each first support portion 57 is movable, and in particular angularly movable, about a rotation axis C to which it is connected to the respective second support portion 58.

[0087] Furthermore, each control device 55 may include its own coupling group 59, each coupling group 59 being partially associated with its own first support portion 57 and its own second support portion 58, and movably coupling its own first support portion 57 and its own second support portion 58 with respect to each other. In particular, the coupling group 59 defines its own axis of rotation C.

[0088] More preferably, each control device 55 includes a locking device 60 designed to lock and unlock each first support 57 so as to inhibit and allow the movement of each first support 57 relative to the respective second support 58.

[0089] More specifically, each control device 55, in particular each second support portion 58, may include a position control group 61 designed to control the relative position of the second support portion 58 with respect to the respective wall portion 30 (and the respective connecting plate 56).

[0090] More specifically, each position control group 61 may be operably connected to the main plate 62 of its respective second support portion 58, and may be designed in particular to modify the position of the main plate 62 relative to each wall portion 30 (and each connecting plate 56). Note that changing the position of the main plate 62 changes the position of the first support portion 57.

[0091] According to a possible and non-limiting embodiment, each position control group 61 may comprise a first bar 63 and a second bar 64 spaced apart from each other, each bar connected to one portion of each main plate 62, in particular, each bar passing through each hole of each main plate 62.

[0092] Furthermore, each first bar 63 and each second bar 64 are designed to contact each wall portion 30 and / or each section of each connecting plate 56.

[0093] Preferably, each of the first bar 63 and the second bar 64 is designed to allow a change in the position of each portion of the main plate 62, in particular, with respect to the respective wall portions 30 and / or the respective connecting plates 56. In particular, each of the first bar 63 and the second bar 64 may allow movement of the respective portions of the main plate 62 along the relative first bar 63 or the relative second bar 64.

[0094] More preferably, each position control group 61 may include a plurality of locking elements 65 for locking the position of each part of the main plate 62.

[0095] This position control group 61 enables very precise adjustment of the camera 31's position relative to the wall portion 30.

[0096] During use, the article processing device 1 processes articles within the internal environment 6, and the inspection system 8 inspects each area within the internal environment 6.

[0097] According to a particular embodiment disclosed, the article processing apparatus 1 fills at least a container 2 with an injectable product by a filling device 13, and while the container 2 is advanced along the filling portion P1 and the cap portion P2, respectively, a closure 3 is attached and secured to the container 2 by a capping device 14.

[0098] In addition, the article processing apparatus 1 may also preheat the precursor 4 with a preheating device 15 and / or form the container 2 from the precursor 4 with a molding device 16.

[0099] Preferably, the orientation and / or position of each camera 31 may be controlled by the control device 55 before and / or during the operation of the article processing device 1.

[0100] The configuration of the control device 55 provides a wide range of adjustments for adjusting the orientation and / or position of the camera 31 while optimizing compactness.

[0101] The advantages of the article processing machine 1 according to the present invention will become clear from the above description.

[0102] In particular, by having a separate housing 29 that protrudes into the internal environment 6, and by at least partially positioning the camera 31 within the cavity 32, it is possible to visually inspect areas within the internal environment 6 that are difficult to access.

[0103] Another advantage is the possibility of eliminating sensors that may be associated with a filling unit that previously required the use of specific sensors, for example, so that the filling process can be observed by the camera 31.

[0104] Another advantage is that visual inspection can be performed while the material handling machine 1 is in operation.

[0105] A further advantage lies in the possibility of moving and aligning the camera 31 within the cavity 32 to control the region observed within the internal environment 6.

[0106] Clearly, modifications can be made to the inspection system 8 and / or article processing machine 1 described herein without departing from the scope of protection defined in the attached claims.

Claims

1. A processing machine for packaging injectable food (1), - An isolation chamber (5) that isolates the internal environment (6) from the external environment (7), - One or more processing devices (12, 13, 14, 15, 16) configured to process articles within an internal environment (6), - At least one testing system (8) attached to the isolation chamber (5), It has at least the following features: The inspection system (8) comprises at least an isolation housing (29) that is attached to the isolation chamber (5) and is designed to protrude into the internal environment (6), The isolation housing (29) includes a cavity (32) designed to be fluidly isolated from the internal environment (6), The inspection system (8) further comprises a camera (31) at least partially located within the cavity (32), The separation housing (29) protrudes into the internal environment (6), The aforementioned separation housing (29) is - A frame (37) having an opening (38), - A transparent wall (39) covering the opening (38), Equipped with The camera (31) is positioned inside the cavity (32) to inspect an area within the internal environment (6) through the transparent wall (39). The frame (37) is provided with a rim (41) that defines the opening (38), The rim (41) has a contact surface (42), and the transparent wall (39) engages with the contact surface (42). The isolation housing (29) includes a spacer (48) designed to be positioned between the transparent wall (39) and the wall portion (30) of the isolation chamber (5), the spacer (48) being designed to apply a pressing force to the transparent wall (39), The isolation chamber (5) is provided with multiple walls (19) that define the internal environment (6), The inspection device (8) is attached to each wall section (30) of the wall (19), The separation housing (29) is attached to the inner surface of the isolation chamber (5) in the article processing machine.

2. The machine according to claim 1, wherein the cavity (32) is fluidly connected to the external environment (7).

3. The machine according to claim 1 or 2, wherein the camera (31) comprises a lens portion (33) having an optical system, the lens portion (33) being partially located within a cavity (32).

4. The rim (41) comprises a groove and a gasket (47) disposed within the groove. The machine according to claim 1, wherein the transparent wall (39) is pressed against the gasket (47).

5. The system further includes a control device (55) coupled to the camera (31) for controlling the position and / or orientation of the camera (31), The control device (55) includes a first support portion (57) connected to the camera (31) and a second support portion (58) connected to each wall portion (30) of the isolation chamber (5). The machine according to any one of claims 1 to 4, wherein the first support portion (57) is rotatable relative to the second support portion (58).

6. The machine according to claim 5, wherein the control device (55) comprises a fixing unit (60) designed to fix and release the first support (57), and the fixing unit (60) prevents and allows relative movement of the first support (57) with respect to the second support (58), respectively.

7. The second support portion (58) includes a position control group (61) designed to control the relative position of the second support portion (58) with respect to each wall portion (30), The position control group (61) is connected to the main plate (62) of the second support part (58), The position control group (61) comprises a first bar (63) and a second bar (64) spaced apart from each other, each connected to one portion of the main plate (62), The machine according to claim 6, wherein the position of each portion of the main plate (62) on the first bar (63) and the second bar (64) is changeable.

Images