JP2013244967A - Vacuum treatment machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the burden on a worker by keeping chamber lids of all vacuum chambers open, in replacing parts of a vacuum treatment machine, and to prevent durability and safety of the vacuum treatment machine from being reduced.SOLUTION: A vacuum treatment machine is provided with an opening/closing cam 42 that opens/closes a chamber lid 27 when a cam roller 41 comes in contact therewith or rolls, and an auxiliary cam 48 disposed to move up/down between a retreated position (ascending position) not in contact with the cam roller 41 and an acting position (descending position) in contact with the cam roller. A servo motor 54 operates on the basis of a switching signal for switching the vacuum treatment machine 2 to a parts replacement mode, a decompression releasing signal for showing release of a decompressed state of all the vacuum chambers, and a stopping signal for showing stop of the vacuum treatment machine 2, to lower the auxiliary cam 48, and push down the cam roller 41. The chamber lids 27 of all the vacuum chambers 28 are opened, accordingly.

Description

  The present invention relates to a vacuum processing machine that performs a decompression process on a bag filled with an object to be packaged in a vacuum chamber.

  When a plurality of sets are installed around the table at equal intervals, the chamber body moves along a circular movement path in the horizontal plane as the table rotates, and each chamber body is installed and closed. A chamber lid that constitutes a vacuum chamber together with the chamber body, moves together when the chamber body moves along the movement path, and a chamber lid that opens and closes the chamber lid at a predetermined timing when the chamber body moves along the movement path. For example, Patent Documents 1 to 5 disclose a vacuum processing machine that includes an opening / closing mechanism and performs a decompression process on a bag filled with an object to be packaged in the vacuum chamber.

In Patent Document 1, an empty bag is received in the chamber body (the upper edge portion of the empty bag is held by a gripper installed in the chamber body), and after opening the empty bag and filling an object to be packaged, Is closed, and the vacuum chamber is depressurized, and a vertical vacuum processing machine is described which performs depressurization processing and bag opening sealing on the bag after filling.
In Patent Documents 2 and 3, a bag filled with an article to be packaged is received in the chamber body (holding both side edges of the bag with grippers installed in the chamber body), the chamber lid is closed, and the vacuum chamber is depressurized. A vertical vacuum processing machine is described that performs a decompression process and a bag mouth seal on the bag. A rotary type filling machine is installed adjacent to this vacuum processing machine (two-rotor type filling vacuum processing machine), and the bag is filled with the rotary type filling machine, and the vacuum processing is performed via the bag delivery device. The machine accepts.

In Patent Document 4, a bag filled with an object to be packaged in the chamber body is laid sideways (a bag filled with the object to be packaged is placed on a cradle installed in the chamber body), the chamber A horizontal vacuum processing machine is described in which a lid is closed and the inside of a vacuum chamber is decompressed, and the bag is decompressed and the bag mouth is sealed.
In Patent Document 5, a bag with a package body filled with a package and a bag mouth sealed is received in a horizontal state (a bag filled with a package on a cradle installed in the chamber body). A horizontal vacuum processing machine that closes the chamber lid, depressurizes the vacuum chamber, and presses and shapes the bag.

  The chamber lid opening / closing mechanism of a conventional vacuum processing machine generally rolls in contact with the opening / closing cam fixedly arranged along the movement path of the chamber body and the cam surface of the opening / closing cam as the chamber body rotates. And a transmission mechanism for connecting the cam roller and the chamber lid and transmitting the displacement of the cam roller to the chamber lid (the cam roller and the transmission mechanism are provided for each vacuum chamber). With this structure, the chamber lid opens at a predetermined open position while the chamber body moves along the movement path, and then closes at a predetermined closed position, which is mechanically repeated for every rotation in all vacuum chambers. It is. For this reason, even if the processing speed of the vacuum processing machine is changed, the opening and closing of the chamber lid can follow the processing speed without any problem (always open and close at a predetermined timing (the open position and the closed position on the movement path)). There are advantages.

However, along with the long-term use of the vacuum processor, it is necessary to replace parts such as a seal member and a gripper installed in the vacuum chamber. This part replacement must be performed simultaneously in all the vacuum chambers of the vacuum processor. The chamber lid opens only in a limited open area (between the open position and the closed position) of the movement path. Therefore, when replacing the parts, the vacuum processing machine is first stopped and the chamber lid is opened. Part replacement is first performed for the chamber (vacuum chamber stopped in the open area), then the vacuum processing machine is restarted, and the vacuum chamber that has been closed until then moves to the open area and opens the chamber cover. When this happens, stop again and replace the parts in the vacuum chamber. By repeating this, parts were exchanged for all the vacuum chambers.
However, in a vacuum processing machine equipped with a large number of vacuum chambers, it is a lifetime of reducing the safety and improving the productivity of replacing parts by repeatedly restarting and stopping many times. It was.

  On the other hand, in Patent Document 2, in addition to a fixed opening / closing cam that opens a chamber lid at the open position of the moving path and closes the chamber lid at the closed position, an annular auxiliary cam having a flat upper surface is provided as the opening / closing cam. It is described that it installs along. This auxiliary cam rises higher than the open / close cam by the operation of the actuator after the number of processes by the vacuum processor reaches a set value, pushes up the cam roller of the chamber lid open / close mechanism, and moves all the vacuum moving on the moving path. Open the chamber lid of the chamber. In addition, a cleaning apparatus having a cleaning nozzle is installed in the vicinity of the outside of the vacuum processing machine described in Patent Document 2, and the vacuum chamber continues to rotate while the auxiliary cam is raised, The cleaning liquid is sprayed from the cleaning nozzle into the vacuum chamber that moves one after another.

Japanese Patent No. 2967149 Japanese Patent No. 3483776 JP-A-9-48409 JP-A-11-240507 JP-A-10-236429

In addition to the fixed opening / closing cam that opens and closes the chamber lid, the auxiliary cam described in Patent Document 2 is installed, and if the chamber lids of all the vacuum chambers are kept open, the above-described component replacement can be performed. The vacuum processing machine can be restarted and stopped over and over again, reducing the burden on the operator.
However, Patent Document 2 does not clearly describe the timing (or conditions) for opening the chamber lids of all the vacuum chambers. Slightly, when the number of processes by the vacuum processor reaches the set value, close the normally open on-off valve of the vacuum line, and raise the auxiliary cam after the number of processes by the vacuum processor reaches the set value. It is only possible to open the chamber lids of all the vacuum chambers, and it is difficult to say that sufficient consideration has been given to the durability and safety of the vacuum processing machine. For example, if the auxiliary cam is raised when the decompressed state in the vacuum chamber is not released, the durability and safety of the vacuum processing machine are greatly impaired. Patent Document 2 does not consider a component replacement operation that requires stopping the vacuum processing machine (stopping the movement of the vacuum chamber).

  Since the present invention has been made in view of such problems of the prior art, when replacing parts of the vacuum chamber, the chamber lids of all the vacuum chambers are held open to reduce the burden on the operator, The purpose is to ensure the durability and safety of the vacuum processor.

  The present invention includes a plurality of sets installed at equal intervals along a horizontal annular movement path and moved along the movement path. A chamber lid that constitutes a chamber and moves together when the chamber body moves along the movement path; and an opening / closing mechanism that opens the chamber lid when the chamber body moves in a predetermined open region on the movement path; An opening / closing mechanism for opening the chamber lid that does not open the opening / closing mechanism, and a control device for controlling the auxiliary opening / closing mechanism, and the package body is filled in the process of moving the chamber body along the movement path. The vacuum processing machine that decompresses the packaging bag in the vacuum chamber is improved, and the control device has a normal operation mode and a parts replacement mode. The auxiliary opening / closing mechanism is controlled based on a switching signal to the parts replacement mode, a decompression release signal indicating release of the decompression state of all vacuum chambers, and a stop signal indicating stop of the chamber body. It is actuated to open the chamber lids of all vacuum chambers.

  In the above vacuum processing machine, for example, as in Patent Document 1, after receiving an empty bag in the chamber body, filling the empty bag with an article to be packaged, closing the chamber lid, and performing vacuum processing and bag opening in the vacuum chamber. A type that performs sealing, as in Patent Documents 2 to 4, a type in which a bag filled with an object to be packaged is received in a chamber body, a chamber lid is closed, pressure reduction processing and a bag mouth are sealed in a vacuum chamber, and Patent Document 5 As described above, there is a type in which a bag in which an object to be packaged is filled and a bag mouth is sealed is received, the chamber lid is closed, and decompression processing (including shaping of the bag) is performed in the vacuum chamber. Moreover, about the movement form of a chamber main body, there can be both an intermittent movement type and a continuous movement type.

  The vacuum processor has the following specific form, for example. That is, the chamber body is installed around the rotating table at equal intervals, and moves along a circular movement path as the table rotates. The open / close mechanism includes an open / close cam fixedly disposed in the vicinity of the table, a cam roller that rolls in contact with the open / close cam as the chamber body moves, connects the cam roller and the chamber lid, and the cam roller A displacement mechanism for transmitting the displacement to the chamber lid. The auxiliary opening / closing mechanism includes an auxiliary cam installed so as to be movable between a retracted position where the cam roller does not contact and an operating position where the cam roller is in contact, and a drive mechanism for moving the auxiliary cam between the retracted position and the operating position. . Further, the control device operates the drive mechanism to move the auxiliary cam to the operating position, whereby the cam roller is displaced and the chamber lid is opened.

  According to the present invention, the movement of all the chamber bodies (vacuum chambers) is stopped, and the chamber lid is kept open while ensuring the durability and safety of the vacuum processing machine. Can be reduced.

It is a whole top view (normal operation mode) of the vacuum processor concerning the present invention. It is side surface sectional drawing of the opening / closing mechanism and auxiliary | assistant opening / closing mechanism of a chamber lid especially among vacuum processing machines. It is a whole top view (part exchange mode) of the vacuum processor concerning the present invention.

Hereinafter, with reference to FIGS. 1-3, the vacuum processing machine which concerns on this invention is demonstrated concretely.
As shown in FIGS. 1 and 2, a filling machine 1 and a vacuum processing machine 2 are provided side by side (a type called a two-rotor vacuum packaging device), and a delivery device 3 is installed between the two machines. This two-rotor type vacuum packaging apparatus fills a bag with a filling machine 1 and delivers it to a vacuum processing machine 2 by a delivery apparatus 3, and the vacuum processing machine 2 performs bag decompression processing and bag mouth sealing. It is a device that is designed to do this.

The filling machine 1 is installed at regular intervals around a table 5 in which a plurality of pairs of grippers 4 that can approach and separate from each other are intermittently rotated (left rotation in FIG. 1). A device for performing each step (the following (1) to (10)) is installed at the stop position), and while the table 5 is rotated once, the supply of the bag 6, the filling of the package, the bag Various packaging processing steps such as mouth sealing are sequentially performed.
(1) A conveyor magazine type bag feeder 7 is installed at the stop position 1. The bag 6 is supplied to and gripped by the gripper 4 by the conveyor magazine type bag feeder 7.
(2) The printing device 8 is installed at the stop position 2. The date of manufacture is printed on the surface of the bag 6 by the printing device 8.

(3) The bag mouth opening device 9 and the opening holding device 11 are installed at the stop position 3. The bag mouth of the bag 6 is opened by the pair of suction cups 12 of the bag mouth opening device 9, and then the pair of opening holding claws 13 of the opening holding device 11 are inserted into the opened bag mouth. The opening holding device 11 is a so-called follow-up type, and moves with the gripper 4 and the bag 6 from the stop position 3 to the stop position 4 along with the intermittent rotation of the table 5, and the liquid filling nozzle 14 described later at the stop position 4 moves the bag 6. Immediately after being inserted into the bag, it rises and comes out of the bag 6 and returns to the stop position 3.

(4) The liquid filling nozzle 14 is installed at the stop position 4. A liquid filling nozzle 14 is inserted into the bag 6 and filled with liquid.
(5) A hopper 15 is installed at the stop position 5. A hopper 15 is inserted into the bag 6 and filled with solid matter.
(6) The liquid filling nozzle 16 is installed at the stop position 6. A liquid filling nozzle 16 is inserted into the bag 6 and filled with liquid.
(7) The air ejection nozzle 17 is installed at the stop position 7. The air ejection nozzle 17 is inserted into the bag 6, and the portion to be sealed at the bag mouth is cleaned by the ejection air.

(8) The first sealing device 18 is installed at the stop position 8. The bag mouth of the bag 6 is sandwiched between a pair of hot plates 19 and sealed (first seal).
(9) The second sealing device 21 is installed at the stop position 9. The bag mouth of the bag 6 is sandwiched between a pair of hot plates 22 and sealed (second seal).
(10) The cooling device 23 is installed at the stop position 10. The seal portion of the bag 6 is cooled by being sandwiched between a pair of cooling plates 24, and then the pair of cooling plates 24 is opened by retreating a predetermined distance (moving leftward in FIG. 1) while sandwiching the bag 6. Open. After the bag 6 is opened, the pair of cooling plates 24 are moved back to the original standby position (position shown in FIG. 1) while being opened, and the bag 6 is carried out by the product bag carry-out conveyor 20 installed below.

  In addition, the above packaging process by the filling machine 1 is a case in which the bag 6 filled with an article to be packaged by the filling machine 1 becomes a bag product as it is (no vacuum processing is performed by the vacuum processing machine 2). When the bag 6 filled with an article to be packaged by the filling machine 1 is subsequently sent to the vacuum processing machine 2 for vacuum processing, the first and second sealing steps (8) and (9) are not performed. In the cooling step (10), it is not necessary to cool the cooling plate 24 (water cooling).

  The vacuum processing machine 2 includes a table 25 that intermittently rotates (rotates clockwise in FIG. 1) while repeatedly moving and stopping. A chamber body 26 is installed around the table 25 at equal intervals, and corresponds to each chamber body 26. A chamber lid 27 is openably and closably installed, and a vacuum chamber 28 is constituted by the chamber body 26 and the chamber lid 27. The chamber body 26 intermittently moves on a horizontal circular movement path with the intermittent rotation of the table 25 (numbers 1 to 12 on the table indicate a stop position). Various vacuum processing steps such as reception of the filled bag 6, closing of the chamber lid 27, decompression processing in the vacuum chamber 28 and sealing of the bag mouth are sequentially performed.

  The chamber body 26 is attached to the periphery of the table 25 radially at equal intervals with the openings directed outward. The chamber lid 27 is opened / closed by the opening / closing mechanism 29 with respect to the opening of the chamber main body 26, and is in close contact with the chamber main body 26 at the periphery of the opening to constitute a vacuum chamber 28. In the vacuum chamber 28, there is a gripper 31 (see Japanese Patent No. 2538473) that grips a portion of the bag 6 to be sealed, a sealing device that includes a receiving base 33 that advances and retreats by an air cylinder 32 and a heater device 34. They are installed on the chamber body 26 side and the chamber lid 27 side, respectively. A vacuum pipe (both not shown) connected to a vacuum pump and a switching valve as a pressure reducing mechanism is connected to the chamber main body 26, and a close contact portion between the chamber main body 26 and the chamber lid 27 (opening peripheral portion of the chamber lid 27). The packing 35 is inserted over the entire circumference. A lever 36 is fixed to the upper end of the chamber lid 27, and a shaft 37 attached to the tip of the lever 36 is rotatably supported by a support member 38 fixed to the upper end of the chamber body 26.

  The opening / closing mechanism 29 supports a vertical elevating shaft 39 that is vertically movable on the table 25, a cam roller 41 attached to the elevating shaft 39, an opening / closing cam 42 that the cam roller 41 contacts and rolls, and an intermediate portion. It comprises a chamber lid opening / closing arm 46 that is pivotally supported by a member 38 via a shaft 40, has a distal end coupled to the chamber lid 27 via a link 44, and a proximal end coupled to the distal end of the lift shaft 39 via a link 45. As shown in FIGS. 1 and 2, the opening / closing cam 42 is fixedly arranged in the vicinity of the table 25 (downward position) in an arc shape in plan view, and the cam roller 41 is not in contact with the downwardly facing cam surface 43. In other words, in a region where there is no arc-shaped opening / closing cam 42, the chamber lid 27 is closed by its own weight, and as shown by the solid line in FIG. 2, the lifting shaft 39 and the cam roller 41 are in a lifted state.

  When the table 25 is intermittently rotated, the vacuum chamber 28 and the elevating shaft 39 are rotated, and when the cam roller 41 contacts and rolls on one inclined portion (not shown) of the cam surface 43 of the opening and closing cam 42, The elevating shaft 39 is pushed down, the open / close arm 46 rotates about the shaft 43, and the chamber lid 27 rotates about the shaft 37 (see the two-dot chain line in FIG. 2). Subsequently, while the cam roller 41 contacts and rolls on the flat portion 43 a of the cam surface 43, the elevating shaft 39 does not move up and down, the chamber lid 27 is kept open, and the cam roller 41 is moved to the other side of the cam surface 43. While contacting and rolling on the inclined portion 43b, the elevating shaft 39 rises and the chamber lid 27 is closed. The chamber cover 27 remains closed until the cam roller 41 comes off the cam surface 43 (the state shown in FIG. 2) and then comes into contact with the one inclined portion to start rolling (see the solid line in FIG. 2). .

The vacuum processing machine 2 is provided with an auxiliary opening / closing mechanism 47. As shown in FIG. 2, the auxiliary opening / closing mechanism 47 moves in the vicinity of the table 25 so as to be movable between the retracted position and the operating position, and moves the auxiliary cam 48 between the retracted position and the operating position. It comprises an auxiliary cam drive mechanism 49 that moves up and down.
The auxiliary cam 48 is a flat plate-like member having a circular arc shape in plan view, and is disposed at a position directly above the moving path of the cam roller 41. As shown by a solid line in FIG. The cam roller 41 is at a high position where it does not come into contact, and at the operating position (lowering position), as shown by a two-dot chain line in FIG. 2, the cam surface 51 comes into contact with the cam roller 41 and pushes it down. And the chamber lid 27 is opened. As shown in FIG. 1, the opening / closing cam 42 and the auxiliary cam 48 are both arcuate in plan view and have different diameters, but have a common center, and are partially along the movement path of the cam roller 41 (the cam surface of the opening / closing cam 42 43 and both end portions of the auxiliary cam 48 are overlapped with each other. The cam surfaces 43 and 51 on which the open / close cam 42 and the cam roller 41 of the auxiliary cam 48 contact and roll are arranged in close proximity so that they can contact the common cam roller 41.

  The auxiliary cam drive mechanism 49 includes a plurality of stands 53 erected on the upper surface of the machine base 52 on which the table 25 is installed, a servo motor 54 installed on each stand 53, and an output shaft of each servo motor 54. A screw shaft 55 that is fixed and screwed into a female thread portion formed at a place where the cam surface 51 of the auxiliary cam 48 is removed, is erected on each stand 53, and is formed at a place where the cam surface 51 of the auxiliary cam 48 is removed. The guide shaft 56 is slidably fitted into the formed hole. When the servo motor 54 is operated, the screw shaft 55 is rotated, and the auxiliary cam 48 is moved up and down between a position indicated by a solid line (retraction position) and a position indicated by a two-dot chain line (operation position) in FIG. When the auxiliary cam 48 is lowered to the operating position, all the chamber lids of the vacuum processing machine 2 are opened, including the chamber lid opened by the opening / closing mechanism 29.

The operation of the auxiliary opening / closing mechanism 47 is controlled by the control device 50 shown in FIG. The operation of the vacuum processor 2 can be switched between the normal operation mode and the parts replacement mode by a switch of the control device 50. When the normal operation mode is selected, the vacuum processor 2 is moved to each stop position (on the table). The numerals 1 to 12 indicate the stop position), and the vacuum processing step is executed as follows, for example.
(1) At the stop position 1, the chamber lid 27 is in a fully open state (the cam roller 41 is in contact with the flat portion 43 a of the cam surface 43 of the opening / closing cam 42), and the bag 6 filled with an article to be packaged is the delivery device 3. The gripper 31 that has been opened is closed, and the position below the planned seal portion is held slightly. 2, reference numeral 57 denotes a part of the opening / closing mechanism of the gripper 31 (see Japanese Patent No. 2538473). The gripper 31 is moved to a predetermined timing by the opening / closing mechanism while the chamber body 27 moves along the movement path. Open and close with.

(2) While the chamber body 27 moves from the stop position 1 to the stop position 3, the cam roller 41 contacts and rolls on the flat portion 43a to the inclined portion 43b of the cam surface 43 of the opening / closing cam 42, and the chamber lid 27 and the chamber are closed. The bag 6 is shaped with a shaping plate (not shown) installed in the main body 26 (see Patent Document 3). At the stop position 3, the cam roller 41 is disengaged from the cam surface 43 of the opening / closing cam 42, and the chamber lid 27 is completely closed.
(3) Subsequently, the inside of the vacuum chamber 28 is sequentially evacuated to a predetermined pressure (preliminary evacuation at the stop position 4, primary evacuation at the stop position 5, and secondary evacuation at the stop position 6). Then, the air cylinder 32 is operated at the stop position 7, and the bag 6 is heat-sealed under reduced pressure by the receiving base 33 and the heater device 34.

(4) After the seal portion is cooled to the stop positions 8 to 10, the atmosphere is introduced into the vacuum chamber 28 to release the reduced pressure state in the vacuum chamber 28, and then the cam roller 41 is connected to the cam surface of the opening / closing cam 42. 43 is brought into contact with the one inclined portion (inclined portion formed on the end opposite to the inclined portion 43 b) and rolls to open the chamber lid 27, and at the stop position 11, the cam roller 41 opens and closes the open / close cam 42. The flat portion 43a of the cam surface 43 is contacted, and the chamber lid 27 is completely opened.
(5) At the stop position 12, the gripper 31 is opened, and the bag 6 that has undergone vacuum processing falls onto the vacuum-processed product bag carry-out conveyor 58, is transferred onto the product bag carry-out conveyor 20 by the joining chute 59, and is carried out. .

  On the other hand, after the production of the vacuum processing products is completed and all the vacuum processing products are discharged from the vacuum processing machine 2 (hereinafter, the vacuum processing machine 2 is in an empty operation without the bag 6), in the control device 50 When the operator switches the operation mode from the normal operation mode to the parts replacement mode, the controller 50 releases the decompression state of all the vacuum chambers 28 (stops the vacuum pump of the decompression mechanism or closes the switching valve), and After the elapse of time (for example, after the table 25 has rotated one or more times), the idle operation of the vacuum processing machine 2 is stopped (intermittent rotation of the vacuum chamber 28 is stopped). In addition, the decompression state of all the vacuum chambers 28 is actually canceled by the empty operation (returns to the atmospheric pressure). Subsequently, the control device 50 operates the auxiliary cam drive mechanism 49 (servo motor 54) based on the switching signal to the parts replacement mode, the decompression state release signal of all the vacuum chambers 28, and the stop signal of the vacuum processor 2. The auxiliary cam 48 is lowered from the standby position to the operating position. In addition to the signal indicating the release operation (for example, the stop signal of the vacuum pump and the close signal of the switching valve) as the release signal of the reduced pressure state, the reduced pressure state in all the vacuum chambers 28 is actually released. For example, a detection signal (atmospheric pressure detection signal) of a pressure sensor (not shown) installed in the vacuum pipe or the like can be used.

  When the idle operation of the vacuum processing machine 2 is stopped, the chamber lid 27 is completely opened at the stop positions 11 and 12 and the stop position 1 by the action of the opening / closing mechanism 29, is closed at the stop position 2, and is stopped at positions 3 to 10 Then it is closed. Here, when the auxiliary cam 48 is lowered from the standby position to the operating position, the auxiliary cam 48 is lowered until the height of the cam surface 51 of the auxiliary cam 48 coincides with the height of the flat portion 43a of the cam surface 43 of the opening / closing cam 42. 10 to 10, the cam roller 41 of the vacuum chamber 28 is pushed down by the auxiliary cam 48, and the chamber lids 27 are opened at the same time. Eventually, the chambers of all twelve vacuum chambers 28 including the vacuum chambers already opened by the opening / closing mechanism 29. The lid 27 is completely opened. This state is shown in FIG. 3 (the filling machine 1 and the delivery device 3 also have no bag 6). Since the vacuum state of all the vacuum chambers 28 is released at the time when the auxiliary opening / closing mechanism 47 is operated, each part of the vacuum processor 2, especially the auxiliary opening / closing mechanism 47, the opening / closing mechanism 29, and the like when the chamber lid 27 is opened. Unreasonable force is not applied to the chamber lid 27 and the like, and the durability and safety of the vacuum processor 2 can be ensured.

  In this state, after performing necessary component replacement for each vacuum chamber 28, when the control device 50 switches from the component replacement mode to the normal operation mode, the control device 50 reverses the auxiliary cam drive mechanism 49 (servo motor 54). The auxiliary cam 48 is returned to the standby position from the previous operating position. Thereby, the opening and closing of the chamber lid 27 at the stop positions 1 to 12 is performed only by the opening and closing mechanism 29, and the normal operation mode shown in FIG. 2 is restored. In this example, when the component replacement mode is switched to the normal operation mode, the vacuum processor 2 is not operated (empty operation). After that, if the main power supply of the vacuum processing machine 2 including the control device 50 is turned off, the operation is completed.

In the above example, after the control device 50 switches from the normal operation mode to the component replacement mode, the operation of releasing the reduced pressure state of the vacuum chamber 28 and the operation of stopping the empty operation of the vacuum processor 2 are automatically performed by the control device 50. However, after the operator performs these operations, the normal operation mode may be switched to the parts replacement mode.
In this case, after the production of the vacuum processing product is completed and all the vacuum processing products are discharged from the vacuum processing machine 2 (hereinafter, the vacuum processing machine 2 is in an empty operation without the bag 6), the switch by the operator The vacuum state of all the vacuum chambers 28 is released by operation (stops the vacuum pump of the pressure reduction mechanism or closes the switching valve), and after a predetermined time has elapsed (for example, after the table 25 has rotated more than one turn), The idle operation of the vacuum processor 2 is stopped by the switch operation. Next, when switching from the normal operation mode to the component replacement mode by the switch operation by the operator, the control device 50 changes the decompression state release signal of all the vacuum chambers 28, the stop signal of the vacuum processor 2 and the switching signal to the component replacement mode. Based on this, the auxiliary cam drive mechanism 49 (servo motor 54) is operated as described above.

  The delivery device 3 includes a first delivery device 61 and a second delivery device (not shown). The first delivery device 61 is a device that receives the bag 6 opened from the cooling plate 24 of the cooling device 23 of the filling machine 1, conveys it in the direction of the stop position 1 of the vacuum processing machine 2, and delivers it to the second delivery device. is there. The first delivery device 61 has essentially the same structure as the bag filling and filling device described in Japanese Patent Application Laid-Open No. 58-34329, and is disposed in a pair of chain conveyors (inside the frame 62) that rotate intermittently. Are installed on the chain conveyor at regular intervals, each consisting of a fixed claw and a movable claw, and the movable claw is always urged against the fixed claw so that the bag is closed when the movable claw is closed. A pair of grippers 63 and 63 that grip both side edges of 6 and a specific stop position (first stop position and last stop position) in the transport direction (left direction in FIG. 1), and stop at the same position A pusher (not shown) for opening the grippers 63, 63 is provided.

  The grippers 63, 63 are both edge portions of the bag 6 that are opened from the cooling plate 24 of the cooling device 23 when the movable claw is opened by the pusher disposed in the same position at the initial stop position and then closed. Is intermittently conveyed in the thickness direction of the bag 6 as the chain conveyor moves. At the last stop position, the movable claw is opened again by the pusher arranged at the same position, and delivered to the second delivery device. The second delivery device (see, for example, Japanese Patent No. 2538473) grips the upper edge of the bag 6 and delivers it to the gripper 31 of the vacuum chamber 28 stopped at the stop position 1 of the vacuum processor 2.

DESCRIPTION OF SYMBOLS 1 Filling machine 2 Vacuum processing machine 3 Delivery apparatus 6 Bag 26 Chamber main body 27 Chamber lid 28 Vacuum chamber 29 Opening / closing mechanism 41 Cam roller 42 Opening / closing cam 47 Auxiliary opening / closing mechanism 48 Auxiliary cam 49 Auxiliary cam drive mechanism 50 Controller 54 Servo motor

Claims (2)

A plurality of sets installed at equal intervals along a horizontal annular movement path and moved along the movement path are installed in correspondence with each chamber body, and constitute a vacuum chamber together with the chamber body. A chamber lid that moves together when the chamber body moves along the movement path, an opening / closing mechanism that opens the chamber lid when the chamber body moves in a predetermined open area on the movement path, and at least the opening / closing An auxiliary opening / closing mechanism that opens a chamber lid that does not open and a control device that controls the auxiliary opening / closing mechanism, and in the process of moving the chamber body along the movement path, a packaging bag filled with an article to be packaged In a vacuum processing machine that performs decompression processing in the vacuum chamber, the control device can switch between a normal operation mode and a component replacement mode. The auxiliary opening / closing mechanism is operated based on a switching signal to the parts replacement mode, a decompression release signal indicating release of the decompression state of all the vacuum chambers, and a stop signal indicating stop of the chamber body. A vacuum processing machine characterized in that the chamber lids of all vacuum chambers are opened. The chamber body is installed around the rotating table at equal intervals, and moves along the movement path as the table rotates, and the opening / closing mechanism includes an opening / closing cam fixedly disposed in the vicinity of the table, A cam roller that rolls in contact with the opening / closing cam as the chamber body moves, and a transmission mechanism that connects the cam roller and the chamber lid and transmits the displacement of the cam roller to the chamber lid. An auxiliary cam installed movably between a retracted position where the cam roller does not contact and an operating position where the cam roller contacts, and a drive mechanism for moving the auxiliary cam between the retracted position and the operating position. The drive mechanism is operated to move the auxiliary cam to the operating position, whereby the cam roller is displaced and the chamber lid is moved. The vacuum processing machine according to claim 1, characterized in that opening.

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