JP3755915B2 - Lifting device for lower box in packaging apparatus, control method therefor, and packaging apparatus - Google Patents

Description

[0001]
[Industrial application fields]
  The present invention relates to a lifting device for a lower box in a packaging device and a control method thereforAnd packaging equipmentIt is about.
[0002]
[Prior art]
As is well known, in the case of a vacuum packaging device which is a form of a packaging device, after forming a pocket portion that bulges downward at a predetermined position of the lower film in a normal molding device, and supplying an article to be packaged in the pocket portion The object to be packaged is wrapped by covering a flat upper film on the upper side of the lower film. Then, the upper film and the lower film containing the packaged objects are loaded in a vacuum chamber, where the air in both films is removed by suction to create a vacuum, and the contact portions of both films are heat sealed. The package is designed to be sealed.
[0003]
After that, the package body is manufactured by cutting predetermined positions in the vertical direction and the horizontal direction from the vacuum chamber with the next stage cutter. Thereby, the vacuum package body provided with the said pocket part in which the to-be packaged object was included, and the collar part (seal | sticker site | part) which protrudes toward the outer periphery of the pocket part is manufactured.
[0004]
By the way, as a molding apparatus for forming the pocket portion, a lower molding box having a concave portion that substantially matches the outer shape of the pocket portion to be molded normally, and an upper side of the lower molding box are arranged. And a bottom portion of the recess formed in the lower molding box is partially opened and connected to a vacuum pump.
[0005]
As a result, the lower film is heated and softened by sandwiching the lower film between the lower molding box and the upper molding box (hot plate), and in that state, the vacuum pump is operated to bring the inside of the recess to a negative pressure. As a result, the lower film is sucked and brought into close contact with the inner wall surface of the recess. Thereby, the pocket part which substantially corresponds to the shape of a recessed part is formed in the predetermined part of a lower film.
[0006]
Conventionally, a cylinder is used as a drive source as a drive device that moves the lower molding box up and down. The pair of upper and lower molding boxes approach when the lower box rises, and the lower film existing between the two is sandwiched and sealed at a predetermined pressure, and then sucked from the lower box and molded. , Predetermined processing such as vacuum and sealing is performed. However, since each of the boxes is very heavy, the cylinder cannot receive the load (the added value of the box that the self moves up and down and the reaction force received from the other box). Therefore, a cam mechanism is connected to the tip of the cylinder rod, and each box is supported via the cam mechanism. The reaction force received when the pair of boxes face each other and pinch the film is received by the cam mechanism, and the cylinder functions to move the box up and down. Note that the mechanism that is moved up and down adopts substantially the same configuration in the lower box in the vacuum chamber.
[0007]
On the other hand, a molding box or the like for forming a pocket portion forms a relatively large recess on the upper surface of the main body and accommodates a nest in the recess so as to accommodate different forms of packaging in one packaging device. It is designed to be detachable.
[0008]
A recess having a predetermined shape (substantially coincides with the shape of the pocket portion) is formed on the upper surface of the nest. Thereby, when changing the shape of the package to manufacture, it can respond now by replacing | exchanging the said nest | insert.
[0009]
[Problems to be solved by the invention]
In the above-described conventional apparatus, due to the characteristics of the cylinder (because the weight of the box to be lifted / lowered is very heavy), the cylinder rod is extended most (projected from the main body), and the upper and lower positions 2 are the most housed in the main body. It will stop at one position, and it will be difficult to control it to stop halfway.
[0010]
On the other hand, the clamping pressure for the film to be processed also has a desired magnitude suitable for performing molding or heat sealing. However, the thickness and properties of the film to be processed vary, and the pressure applied to the film is caused by the distance when the upper and lower boxes are closest to each other. Therefore, when the rising stop position is fixed as described above, each film On the other hand, it may be deformed by applying a pressure higher than desired (especially in the case of a film having high deformability such as polystyrene foam), or conversely, a seal failure may occur due to insufficient pressure.
[0011]
In addition, since the upper box normally receives the urging force from the lower box, if the film thickness is thick, the hot plate in the upper box will be pushed up more than desired, thereby Deforms and cannot be sealed.
[0012]
Further, the lowering stop position of the lower box described above is such that the upper surface of the box is positioned at least below the bottom surface of the pocket portion so that the pocket portion bulged downward can pass through the device. There is a need. In order to improve the productivity, it is preferable that the lowering stop position of the box be as close to the bottom surface of the pocket portion as possible, because the vertical movement distance (stroke of reciprocating cylinder rod) is shortened.
[0013]
However, since the descent stop position is fixed at a predetermined height as described above, the stop position is a lower position that matches the deepest of the processable pocket portions. . Therefore, when forming the pocket portion having a relatively shallow bottom as described above, the box will be lowered to a position lower than necessary, the time required for the reciprocation of the box will be long, and lack of high speed, It becomes a bottleneck for productivity improvement.
[0014]
Moreover, in order to solve such a problem, a plurality of types of driving devices having different strokes are prepared, and a driving device suitable for the form of the package (depth of the pocket portion) manufactured using the packaging device is mounted. However, in such a case, it is essential to prepare a plurality of driving devices in advance, which increases the cost. Moreover, even if a plurality of types are prepared in this way, only a stepwise response is possible, and there is also a certain range in the depth of the pocket portion corresponding to one type of driving device, and the degree is small within that range. Although the problem remains similar to the above. In order to narrow the range, the types of drive devices to be prepared increase, resulting in higher costs.
[0015]
  The present invention has been made in view of the above-described background. The object of the present invention is to set the clamping pressure between the film to be processed and the upper box to a desired value, and to perform high-quality sealing or molding. The lower box lifting and lowering device in the packaging device which can perform processing and the like, and can reciprocate in a short time by shortening the lifting and lowering movement stroke of the lower box, thereby improving productivity and reducing the cost. Its control methodAnd packaging equipmentIs to provide.
[0016]
[Means for Solving the Problems]
  In order to achieve the above-described object, in the lower box lifting control method in the packaging device according to the present invention, a molding that forms a pocket portion that bulges downward in a predetermined portion of the continuously supplied lower film. An apparatus, a supply means provided on the downstream side of the molding apparatus, for supplying an article to be packaged in the pocket portion, and arranged continuously on the downstream side of the supply means so as to cover the upper surface of the lower film. Means for supplying the upper film, sealing means for sealing at least the contact portions of the upper and lower films, and means for cutting a predetermined portion of the upper and lower films, which is disposed downstream of the sealing means; It is assumed that the lower box is mounted on the molding device or the sealing means in the packaging device including AndDuring packaging processing of the packaging deviceA predetermined motor is used as a drive source for moving the lower box up and down, and by controlling the rotational drive of the motor, the lower box is moved up and down and temporarily stopped at an arbitrary position. 1).
[0017]
  The packaging device having the above configuration is generally called a deep-drawing type packaging device, and continuously performs a series of processes from forming the pocket portion to sealing and cutting the film.LimitThe present invention can also be applied to a packaging apparatus that uses a film in which a pocket portion is formed in advance to perform filling, filling, and sealing / cutting of the film in the pocket portion.
[0018]
Preferably, the upper pause position of the lower box is determined and controlled according to the film to be processed, and the lower pause position of the lower box is formed on the lower film. It is determined and controlled according to the depth of the pocket portion.
[0019]
In any of the above cases, the lower box is moved in a predetermined direction, and during the movement, it is detected that the lower box has passed a predetermined reference position, and further moved by a predetermined distance after the detection. Therefore, it is more preferable to control to move to the temporary stop position.
[0020]
  As a lifting device for the lower box constituting the molding device or the sealing device provided in the deep drawing packaging device suitable for carrying out the above method,When the packaging device performs packaging processing, the lower box is moved up and down.A motor is used as a drive source. As this motor, for example, a servo motor may be applied. And a power transmission mechanism that is connected to the output of the motor and converts rotational motion into linear reciprocating motion, and control means that controls the rotation of the motor to raise and lower the lower box and temporarily stop at an arbitrary position. It is to prepare and configure.
  The motor further includes a sensor for detecting that the lower box has passed a predetermined reference position, and the control means receives the detection signal from the sensor and further moves the motor by a predetermined distance in the same direction. It is preferable to configure so as to rotate.
[0021]
  Further, the packaging device according to the present invention includes a molding device that forms a pocket portion that bulges downward in a predetermined portion of the continuously supplied lower film, and the pocket provided on the downstream side of the molding device. Supply means for supplying an article to be packaged in the section, means for supplying the upper film continuously so as to cover the upper surface of the lower film, arranged at the downstream side of the supply means, and at least the upper and lower films In the packaging apparatus, comprising: sealing means for sealing the contact portion of the sealing member; and means for cutting a predetermined portion of the upper and lower films disposed on the downstream side of the sealing means. The lower box lifting device to be configured is the lower box lifting device according to any one of claims 6 to 8.
[0022]
[Action]
When the motor is rotated, it is converted into a linear motion via the power transmission mechanism, and the lower box also moves up and down. When the rotation is stopped, the up / down movement is also stopped. Therefore, if the rotation of the motor is stopped when the lower box comes to a predetermined position, it can be temporarily stopped at an arbitrary position. This can be done at either the upper stop position or the lower stop position.
[0023]
Therefore, for example, when the type of film to be processed changes and its thickness changes, the upper stop position is corrected accordingly. Thereby, the said film can be clamped between upper boxes with the desired pressure according to a film.
[0024]
Moreover, although the pocket part is formed in the lower film, there are various depths of the pocket part depending on the product. In the present invention, the lower stop position can be arbitrarily set. Therefore, when the lower film is temporarily stopped at a predetermined distance (preferably as close as possible) below the bottom surface position of the pocket part currently being manufactured, the lower film is conveyed. The lower box does not come into contact with the pocket portion, and the lifting stroke can be the shortest or close to the distance depending on the depth of the pocket portion, thereby shortening the time required for reciprocation.
[0025]
When it is detected that the lower box has come to the reference position and the stop position is controlled based on that, there is no need to monitor the position of the lower box until the reference position. It is only necessary to rotate it in a predetermined direction. And if it comes to a reference position, it will be stopped at an exact stop position by monitoring and controlling the number of rotations of the motor output thereafter.
[0026]
【Example】
Hereinafter, preferred embodiments of a lower box lifting / lowering device and its control method in a packaging device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows the overall configuration of a deep drawing vacuum packaging apparatus as an example of a packaging apparatus in which the present invention is mounted. As shown in the figure, it is continuously pulled out from the first original fabric film 13 through claw members 12 arranged at predetermined intervals of an endless chain 11 provided between a pair of sprockets 10 and 10. The lower film 14 is forwardly transferred.
[0027]
A molding device 15 having an upper molding box 15a and a lower molding box 15b is disposed near the carry-in side of the lower film 14, and the lower side of the molding device 15 Pocket portions 14a having a predetermined shape are formed in the side film 14 at predetermined intervals.
[0028]
Moreover, although not shown in figure, the package supply means is arrange | positioned ahead of the advancing direction of the shaping | molding apparatus 15, and the package 16 is sequentially supplied in the pocket part 14a. Further, a second original film 17 is disposed substantially at the center upper portion of the conveyance path of the lower film 14, and the upper film 18 is continuously supplied from the second original film 17. It covers the upper part of.
[0029]
Furthermore, a vacuum chamber 19 serving as a sealing means is disposed forward of the coating point X of the upper film 18 in the advancing direction so that air in the pocket portion 14a is removed by suction, and a lower portion located around the pocket portion 14a is disposed. A contact portion between the side film 14 and the upper film 18 is heat-sealed.
[0030]
Further, a horizontal cutter means 20 and a vertical cutter means 21 are disposed further forward in the traveling direction of the vacuum chamber 19, and the predetermined positions of the lower film 14 and the upper film 18 are cut in the horizontal and vertical directions, and one piece is cut. The vacuum package 22 is manufactured and carried out.
[0031]
Here, the vacuum chamber 19 will be described in detail. As shown in FIG. 2, the vacuum chamber 19 includes an upper vacuum box 23 and a lower vacuum box 24. It has been.
[0032]
The lower vacuum box 24 is detachably inserted into a main body including a base plate 26 and a box 27 having a recess 27a fixed on the base plate 26, and into the main body, that is, the recess 27a of the box 27. A recess 28 a is formed at a predetermined position on the upper surface of the insert 28. The concave portion 28a has substantially the same shape as the pocket portion 14a formed in the lower film 14, and the pocket portion 14a is inserted into the concave portion 28a during vacuum processing.
[0033]
Further, a seal rubber 29 is disposed on the upper surface located at the upper peripheral edge of the recess 27 a of the box 27. And when the upper vacuum box 23 is closed with respect to the lower vacuum box 24, the lower film 14 and the upper film 18 are airtightly crimped | bonded in the peripheral part of both, and the air between both the films 14 and 18 is extracted and vacuumed. Apply processing. At the same time, the hot plate 25 descends and the films 14 and 18 are heated and pressed between the hot plate 25 and the seal rubber 29 to seal a predetermined position.
[0034]
Further, the lower vacuum box 24 will be described in detail. As shown in FIG. 3 and FIG. The base plate 26 is slidably attached to a guide rail member 33 formed at a predetermined position on the upper surface of the mounting base 32.
[0035]
Specifically, a groove 26 a is formed at a predetermined position on the lower surface of the base plate 26 constituting the lower vacuum box 24, and the dovetail groove 26 a is aligned with the guide rail member 33, thereby along the guide rail member 33. It can be moved. Furthermore, a screw rod 35 is inserted into the inside of the longitudinal center line of the base plate 26 (both ends projecting outward from the side surface of the base plate 26), and the handle 36 is fixed to the base end side of the screw rod 35. The base plate 26 can be connected and fixed via a screw portion formed at the tip.
[0036]
In addition, a U-shaped handle 37 is formed on the base plate 26 on the handle 36 side so that the base plate 26 can be easily pulled out by grasping the handle 37 with the screw removed and pulling it out to the front side. It has become. When pulled out in this way, the upper part is opened, so that the insert 28 can be easily removed and attached.
[0037]
Here, in the present invention, as a means for raising and lowering the lower vacuum box 24, a servo motor that can be controlled to rotate at predetermined angles in the forward and reverse directions is used. Specifically, as shown in FIGS. 3 and 4, the upper portion of the two wall plates 40 connected by screws 41 is connected to a predetermined position of the base 30, and the bottom plate 42 is connected to the lower end of the wall plate 40. To do. Then, a servo motor 45 is mounted on a plate 44 attached to the lower surface of the bottom plate 42 via a support bar 43. Thereby, the servo motor 45 is fixed at a predetermined position on the lower side of the base 30. At this time, the output shaft 45a of the servo motor 45 is installed so as to protrude above the plate 44 in an upright state. The encoder attached to the servo motor 45 outputs a pulse every time the predetermined angle is rotated.
[0038]
A screw screw 47 is attached to the output shaft 45 a of the servo motor 45 via a connecting jig 46. Further, below the screw screw 47 (the portion not threaded off), the bearing is supported by penetrating through the bearing 48 attached to the bottom plate 42, so that the standing state is stably maintained. FIG. 3 shows a state in which the lower part of the wall plate 40 is cut away (the drawing is left in the upper right part in the drawing), and the left side from the center of the screw screw 47 shows a partially broken cross section. Yes.
[0039]
Further, guide rods 50 are erected on both ends of the upper surface of the bottom plate 42, and the upper ends of the guide rods 50 are connected by a top plate 51. An operation plate 53 is attached to the guide rod 50, and the operation plate 53 can be moved up and down along the guide rod 50. Further, a sleeve 55 in which a female screw to be screwed with the screw screw 47 is attached and integrated at the center of the operation plate 53, and the screw screw 47 is inserted into the sleeve 55. Thus, when the servo motor 45 rotates forward and backward and the screw screw 47 rotates in a predetermined direction, the sleeve 55, that is, the operation plate 53 is moved up and down accordingly.
[0040]
Further, one end 56 a of the first link 56 is rotatably attached to both ends of the operation plate 53. At the other end 56b of the first link 56, one ends 57a and 58a of the second and third links 57 and 58 are rotatably connected. The other end 57 b of the second link 57 is rotatably attached to the base 30, and the other end 58 b of the third link 58 is rotatably attached to a predetermined position of the attachment base 32.
[0041]
And the link mechanism comprised by the said three links 56-58 functions as follows. That is, when the operation plate 53 is lifted from the state of FIG. 3, the first link 56 is also lifted to bias the one end 57a of the second link 57 and the one end 58a of the third link 58 upward. Then, since the base 30 is fixed, the other end 57b of the second link 57 does not move in the height direction. Therefore, the second link 57 is moved in a predetermined direction around the other end 57b (the one end 57a is raised). Rotate in the direction of As a result, the node where each link is connected rises. Further, the mounting base 32 to which the third link 58 is connected is connected to the support column 31 and is allowed only to move up and down, so that the other end 58b of the third link 58 also rises as the node increases. As a result, the mounting base 32 and thus the lower vacuum box 24 is raised.
[0042]
At the uppermost position, as shown by a two-dot chain line in FIG. 3, the second and third links 58 stand up and are positioned substantially in a straight line, and the other end 58a of the third link 58 is the nodal point. The one ends 57a and 58a connected to the second and third links and the other end 57b of the second link 57 are arranged on a vertical line.
[0043]
Further, when moving down, the screw 47 is reversed by rotating the servo motor 45 in the opposite direction. Then, the link mechanism performs the reverse operation to lower the mounting base 32, and the lower vacuum box is also lowered accordingly. When the rotation of the servo motor is stopped during the downward movement, the rotation of the screw screw 47 is also stopped, so that the lowering of the mounting base 32 and the lower vacuum box 24 is also stopped.
[0044]
Furthermore, in this embodiment, a belt-like suspension plate 60 is attached to one side surface of the operation plate 53, and a detection plate 61 is disposed at the lower end of the suspension plate 60. On the other hand, a micro switch 62 is installed on the side surface of the bottom plate 42 (the installation side of the hanging plate 60). The micro switch 62 outputs a detection signal when the detection plate 61 is opposed to the micro switch 62, and the timing of the detection is that the lower vacuum box 24 is located at the uppermost position (position where it contacts the upper box). Is also adjusted so that it is detected when it comes down a predetermined distance. The output of the microswitch 62 is given to the control device 64.
[0045]
Further, the control device 64 is also given an output from an encoder provided in the servo motor 45, and controls the rotation of the servo motor 45 based on the given signals and the like. That is, since the installation height of the microswitch 62 is fixed, the position of the lower vacuum box 42 when the microswitch 62 is turned on is constant, and this is set as the reference position. The up and down movement distance when the screw screw 47 (servo motor 45) rotates once is already known. Therefore, when the detection signal from the micro switch 62 is received, the absolute position where the lower vacuum box 24 exists at that time can be known. Therefore, by rotating the servo motor 45 in a predetermined direction a predetermined number of times from that time, it can be accurately performed. It controls so that it may be located in desired height.
[0046]
Specifically, as shown in FIG. 5, first, initial conditions are acquired, and initial settings are made based on the initial conditions (ST1). Specifically, the acquired data includes film information such as the thickness and type of the film to be processed, processing conditions such as the depth of the pocket portion formed in the lower film, and the like. In the initial setting, the uppermost position (upper stop position) of the lower vacuum box 24 is calculated based on the former information, and the lowermost position (lower stop position) of the lower vacuum box 24 based on the latter information. Based on the distance from the reference value of each calculated position, the total rotation angle (number of pulses from the encoder) of the output shaft 45a of the servo motor 45 is necessary to reach each position after passing the reference value. And set the value.
[0047]
Next, since the lower vacuum box 24 stands by at a predetermined position on the lower side (away from the lower film) at the time of start-up, an ascending command is followed at a predetermined timing following the movement of the upper and lower films. To emit. That is, the servo motor 45 is controlled to rotate in the direction in which the lower vacuum box 24 is raised (ST2). In addition, this raising timing is performed when both the films which move intermittently are suspended like the control conventionally performed. Then, during this ascent, the servo motor 45 is controlled to rotate at a predetermined speed.
[0048]
Next, when a detection signal is received from the micro switch 62, the rotation angle of the servo motor 45 is monitored and controlled from that time, and the servo motor 45 is rotated by the number of times and the rotation angle necessary to reach the upper stop position obtained in the initial setting. Is rotated (ST3, 4). That is, the number of pulses sent from the encoder is counted and rotated until the set value is reached. As a result, the lower vacuum box 24 rises and reaches a desired height position necessary to sandwich the two films with the upper box at a predetermined pressure. Then, the rotation of the servo motor 45 is stopped for a certain time (ST5). At this time, predetermined vacuum processing and sealing processing are performed on the vacuum chamber side.
[0049]
Thereafter, the servo motor 45 is driven in reverse. As a result, the lower vacuum box 24 is lowered (ST6). Then, the servo motor 45 is rotated at a predetermined speed as it is until the detection signal is output from the micro switch 62 as in the above-described rise, and if the detection signal is output, it is output from the encoder of the servo motor 45 from that time. The number of pulses is monitored and controlled, and the servo motor 45 is rotated until the number of pulses necessary to reach the lower stop position obtained in the initial setting is output (ST7, 8). As a result, the upper surface of the lower box 24 is temporarily stopped at a position slightly below the bottom surface of the pocket portion of the lower film to prepare for the next rise.
[0050]
And the said steps 2-8 are repeatedly performed until a packaging process is complete | finished. As a result, both films can be clamped under desired conditions (clamping pressure) and heat-sealed reliably, and the lifting stroke of the lower vacuum box 24 can be shortened as much as possible, thereby increasing the speed. . At the end of the operation, the servo motor 45 is rotated by a predetermined amount in a predetermined direction to lower the lower vacuum box 24 to a predetermined position, and the lower vacuum box is put on standby at the predetermined position (ST9, 10). In addition, the upper box is moved up and down in synchronization with the up and down movement of the lower vacuum box.
[0051]
As described above, by controlling the rotation of the servo motor 45, the upper stop position and the lower stop position of the lower vacuum box can be arbitrarily set, and high-quality processing can be performed at high speed. Moreover, since the reference position is detected and the ascending and descending positions are controlled from there, even if there is an error until that time, it is cleared. Can control.
[0052]
In the present embodiment, when the insert attached to the lower vacuum box 24 is replaced, the lower vacuum box can be pulled out as described above. In such a case, the servo motor 45 is rotated. By moving the lower vacuum box 24 down greatly, it can be moved to a position where there are no obstacles in the foreground and surroundings. Therefore, the exchange process can be easily performed.
[0053]
In addition, although the sensor for detecting the reference position is set at one place, the present invention is not limited to this, and a plurality of sensors may be installed depending on the use, such as for upper side and for lower side.
[0054]
In the above-described embodiment, the vacuum chamber has a predetermined configuration, but the molding apparatus side may have the same configuration. Further, the packaging device to be applied is not limited to the vacuum packaging device as in the above-described embodiment, but N₂The present invention can also be applied to a gas replacement type packaging device filled with an inert gas such as a gas, or a packaging device that does not perform such vacuum or gas replacement.
[0055]
【The invention's effect】
As described above, in the lower box lifting device and its control method in the packaging device according to the present invention, it becomes possible to temporarily stop at an arbitrary position of the lower box. Can be appropriately set according to the processing target. Therefore, even when the film to be processed changes and the optimum clamping pressure varies depending on the film thickness and characteristics, the upper stop position is set and controlled accordingly, and processing can be performed in an optimal state. .
[0056]
In addition, by setting and controlling the lower stop position according to the depth of the pocket, the reciprocation distance (stroke) of the lower box can be shortened, so one process can be performed in a short time and high-speed processing is possible. Thus, productivity is improved. In addition, when exchanging the insert, by lowering the lower box sufficiently from the normal lower stop position, a free space can be formed in the upper part and the periphery thereof, and the exchange process can be easily performed.
[0057]
Furthermore, when the reference position is detected and the movement is controlled based on the detected reference position, it can be controlled roughly before reaching the reference position, and the stop position is controlled based on the reference position every time the reference position is detected. No error is accumulated (the current position can be calculated by adding / subtracting the number of times the motor output has been rotated from the start of operation according to the rotation direction. High-precision control can be performed over a long period of time.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram showing an example of a deep-drawing packaging apparatus to which the present invention is applied.
FIG. 2 is a diagram showing an example of a vacuum chamber in which a lower box as an object of the present invention is mounted.
FIG. 3 is a view showing an embodiment of a lifting device according to the present invention.
FIG. 4 is a view showing an embodiment of a lifting device according to the present invention.
FIG. 5 is a flowchart illustrating functions of a control device.
[Explanation of symbols]
24 Lower vacuum box (lower box)
45 Servo motor
47 Screw screw (Power transmission mechanism)
50 Guide rod (Power transmission mechanism)
53 Actuating plate (Power transmission mechanism)
55 Sleeve (Power transmission mechanism)
56-58 1st-3rd links (power transmission mechanism)
61 Detection plate (sensor)
62 Microswitch (sensor)
64 Controller

Claims (9)

A molding device that forms a pocket portion that bulges downward at a predetermined portion of the lower film that is continuously supplied, and a supply means that is provided on the downstream side of the molding device and that supplies an object to be packaged in the pocket portion And means for continuously supplying the upper film so as to cover the upper surface of the lower film, which is disposed downstream of the supply means, and sealing means for sealing at least the contact portions of the upper and lower films And lowering control of the lower box mounted on at least one of the molding apparatus and the sealing means in the packaging apparatus provided on the downstream side of the sealing means and provided with means for cutting predetermined portions of the upper and lower films A method,
Using a predetermined motor as a drive source for moving the lower box up and down during the packaging process of the packaging device ,
A control method for raising and lowering the lower box in the packaging apparatus in which the lower box is moved up and down by controlling the rotational drive of the motor and is temporarily stopped at an arbitrary position. Supply means for supplying an article to be packaged in the pocket portion of the lower film with the pocket portion supplied continuously, and continuously arranged so as to cover the upper surface of the lower film disposed downstream of the supply means Means for supplying the upper film, sealing means for sealing at least the contact portions of the upper and lower films, and means for cutting a predetermined portion of the upper and lower films, which is disposed downstream of the sealing means; And a lifting control method for the lower box mounted on the sealing means in the packaging apparatus comprising:
In order to perform the sealing process of the sealing means, a predetermined motor is used as a drive source for moving the lower box up and down,
A control method for raising and lowering the lower box in the packaging apparatus in which the lower box is moved up and down by controlling the rotational drive of the motor and is temporarily stopped at an arbitrary position.   The raising / lowering control method of the lower box in the packaging apparatus of Claim 1 or 2 which determined and controlled the upper temporary stop position of the said lower box according to the film of a process target.   The lower in the packaging apparatus according to any one of claims 1 to 3, wherein a lower temporary stop position of the lower box is determined and controlled according to a depth of a pocket portion formed in the lower film. Side box lifting control method. Move the lower box in a predetermined direction,
5. The apparatus according to claim 1, wherein during the movement, the lower box is detected to have passed a predetermined reference position, and further moved by a predetermined distance after the detection, thereby being moved to the temporary stop position. The raising / lowering control method of the lower box in the packaging apparatus of any one of Claims 1. A molding device that forms a pocket portion that bulges downward at a predetermined portion of the lower film that is continuously supplied, and a supply means that is provided on the downstream side of the molding device and that supplies an object to be packaged in the pocket portion And means for continuously supplying the upper film so as to cover the upper surface of the lower film, which is disposed downstream of the supply means, and sealing means for sealing at least the contact portions of the upper and lower films A lower box lifting and lowering device constituting a molding device or a sealing device provided in a packaging device provided on the downstream side of the sealing means and provided with means for cutting predetermined portions of the upper and lower films ,
A motor serving as a drive source for moving the lower box up and down when the packaging apparatus performs packaging processing ;
A power transmission mechanism that is connected to the output of the motor and converts rotational motion into linear motion;
A lower box lifting / lowering device in a packaging apparatus, comprising: control means for controlling rotation of the motor to raise and lower the lower box and temporarily stop at an arbitrary position.   The said motor is a servomotor, The raising / lowering apparatus of the lower box in the packaging apparatus of Claim 6 characterized by the above-mentioned. A sensor for detecting that the lower box has passed a predetermined reference position;
The lifting device for the lower box in the packaging device according to claim 6 or 7, wherein the control means rotates the motor so as to move the motor in the same direction by a predetermined distance after receiving the detection signal from the sensor. . A molding device that forms a pocket portion that bulges downward at a predetermined portion of the lower film that is continuously supplied, and a supply means that is provided on the downstream side of the molding device and that supplies an object to be packaged in the pocket portion And means for continuously supplying the upper film so as to cover the upper surface of the lower film, which is disposed downstream of the supply means, and sealing means for sealing at least the contact portions of the upper and lower films In the packaging device, which is disposed on the downstream side of the sealing means and includes means for cutting a predetermined portion of the upper and lower films,
The packaging apparatus, wherein the lifting device for the lower box constituting the molding device or the sealing device is the lifting device for the lower box according to any one of claims 6 to 8.

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