JP6182353B2 - Intermittently operated horizontal bag making and filling machine - Google Patents

Description

  The present invention relates to an intermittently operated horizontal type bag making and filling machine that performs end sealing while feeding of a packaging film is stopped, and in particular, the space between the packaging bag and the package is reduced as much as possible. The present invention relates to an intermittent operation type horizontal bag making and filling and packaging machine that enables tight packaging.

  2. Description of the Related Art Conventionally, a horizontal bag making filling and packaging machine sequentially delivers and supplies packages at predetermined intervals by a supply conveyor into a cylindrical packaging film which is formed into a cylindrical shape by a cylinder former (former) and is transferred horizontally. In addition, the cylindrical packaging film supplied with the package is provided with a center seal on the overlapping surface of the longitudinal edge portion, and further on the cylindrical packaging film at positions before and after sandwiching the sequentially delivered package, respectively. This is a packaging machine with end seals, and is practically used as a packaging machine suitable for manufacturing pillow packages.

  The horizontal bag making and filling machine is often used to deliver packaging, center seals and end seals while continuously supplying packaging film at a constant speed. For the purpose of reducing the cost, there are some which are configured not as a continuous operation type but as an intermittent operation type (for example, see the horizontal pillow packaging machine described in Patent Document 1). In other words, during the period in which the intermittent operation is stopped, the cylindrical packaging film is end-sealed by being sandwiched by the end sealer from above and below with respect to the cylindrical packaging film in which the feeding is stopped. Since the operation of the end sealer is merely an operation of opening and closing up and down without making a complicated movement such as a box motion, the structure of the packaging machine is simplified, and it can be manufactured in a small size and at a low cost.

  Regardless of the intermittent operation type or the continuous operation type, when a tall package is packaged by a horizontal bag making and filling machine, there are the following problems at the time of end sealing. That is, when the end sealer is closed and the end seal is applied to the tubular film, a force that draws the end sealer toward the sealer acts on any part of the end sealer in the front and rear directions in the feeding direction of the tubular film. As a result, the package is displaced, and the end sealer may bite or crush the package. And the positional offset amount of the package by an end sealer becomes so remarkable that the height of a package is high. For this reason, when packaging a tall package, it is necessary to have a bag length with a margin, and tight packaging, that is, packaging that eliminates the space between the end seal portion of the packaging film and the package as much as possible. difficult.

  In a horizontal pillow wrapping machine, there is a continuous operation type wrapping machine that drives a top sealer (equivalent to an end sealer) placed above and below a cylindrical film along a cylindrical path with a predetermined trajectory (Patent Document) 2). In such a pillow wrapping machine, the forward speed of the top sealer during the period from when the sealing surface of the top sealer contacts the cylindrical film to when the sealing surfaces completely sandwich the cylindrical film is determined by the movement of the cylindrical film. By controlling to become slower than the speed, it is attempted to suppress biting of the package by the top sealer regardless of the height of the package.

JP 2001-233303 A Japanese Patent No. 4773747

  Therefore, in the intermittent operation type horizontal bag making and packing machine that can be manufactured at low cost, the end sealer drive mechanism is not complicated like the continuous operation type horizontal bag making and filling machine, and damages tall packages. Without problems, there is a problem to be solved in terms of enabling tight packaging.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal bag making and filling machine capable of tight packing without damaging tall packages in a simple and small-sized and inexpensive intermittent operation type horizontal bag making and filling machine. It is to be.

In order to solve the above-described problems, an intermittent operation type horizontal bag making and filling machine according to the present invention includes a paper pulling device that feeds a cylindrical packaging material in a lateral direction by an intermittent operation, and opens and closes the cylindrical packaging material in a sandwiching direction. An end seal that has a heater block that operates, and applies an end seal to the cylindrical packaging material by being sandwiched by the heater block when the feeding of the cylindrical packaging material by the paper drawing device is stopped An intermittent operation type horizontal bag making filling and packaging machine for manufacturing a bag package in which a package is enclosed in a bag formed from the cylindrical packaging material , In the closing operation from the contact of the heater block to the cylindrical packaging material to the fully closed position for sandwiching the cylindrical packaging material, the heater block only folds in length corresponding to the folding of the cylindrical packaging material. Previous Is characterized in that to leave Directs tubular packaging material in the heater block of the end sealing apparatus.

According to this intermittent operation type horizontal bag making and filling and packaging machine, the paper drawing device draws and feeds the cylindrical packaging material in the horizontal direction intermittently, and the feeding of the cylindrical packaging material by the paper drawing device is stopped. In the end seal device, the end seal is applied to the cylindrical packaging material by the heater block closing the cylindrical packaging material in the sandwiching direction. By sealing the cylindrical packaging material with the end seal, a bag package in which the package is enclosed is manufactured. The paper drawing device responds to the fact that the heater block folds the cylindrical packaging material in the closing operation after paper drawing after the heater block comes into contact with the cylindrical packaging material and then reaches the fully closed position to sandwich the cylindrical packaging material. to leave feed in additional toward the folding portion of the length tubular packaging material in the heater block of the end sealing apparatus. By sending out such a packaging material, the space between the packaging material for making a bag and the package is reduced as much as possible on the front side in the package feeding direction, and tight packaging can be realized.

  In the intermittent operation type horizontal bag making and filling packaging machine, the paper drawing device and the end seal device each include a servo motor as a driving source, and the servo motor is controlled by a control device of the packaging machine. The operation can be controlled according to the specifications. The servo motor is equipped with an encoder that detects the rotation angle, has high-accuracy positioning and a large acceleration / deceleration torque output, and can respond quickly to sudden changes in the load and pulse speed to achieve a high-speed response. It has good controllability and is suitable for a drive source that performs the operation of the packaging machine. The control device of the packaging machine can control the servo motor in accordance with the specifications of the height and length of the package, and can control the feeding of the cylindrical packaging material with high accuracy and high responsiveness.

In the intermittent operation type horizontal bag making and filling packaging machine, the closing operation of the end seal device includes a first operation from a fully open position to a product height position corresponding to the height of the package, and the product height. The control device is divided into second operations from a position to a fully closed position, and the control device includes an operation interval, an operation speed, or an operation time of the heater block in each of the first operation and the second operation. , And the amount of folds to be sent out may be set for each specification of the package. By dividing the closing operation of the end seal device into two, the control of the end seal device by the control device can be divided reasonably and simply. In the first operation of the closing operation, it is controlled that the heater block closes the operation section to the product height position. In the second operation of the closing operation, it is controlled that the heater block is closed to the fully closed position in the operation section, and the paper drawing device is folded when the heater block is folded in response to sandwiching the cylindrical packaging material. of to out feeding toward the heater block of the end sealing apparatus to the tubular packaging material as delivery amount by the length.

  In the intermittent operation type horizontal bag making filling and packaging machine, the feeding speed of the cylindrical packaging material for the length of the folded portion in the second operation is controlled in synchronization with the closing speed of the heater block. Can do. In the second operation, when the cylindrical packaging material is sent out for the length of the folded portion, the feeding speed is controlled to synchronize with the closing speed of the heater block, so that the cylindrical packaging material by the closing operation of the heater block is controlled. Folding and feeding out of the cylindrical packaging material proceed in alignment, so that the package does not shift in the interior of the cylindrical packaging material, and a smooth end seal operation is obtained.

Since the intermittent operation type horizontal bag making filling and packaging machine according to the present invention is configured as described above, the intermittent operation can be manufactured in a small size and at low cost with a simple configuration including an end sealer device with a direct-acting open / close operation. In the operation-type horizontal bag making and filling and packaging machine, the cylindrical packaging material is fed out by a length corresponding to the folding amount generated in the cylindrical packaging material due to the operation of the end sealer device. As a result, it is possible to prevent positional displacement of the package in the cylindrical packaging material, and it is possible to realize tight packaging in which the space around the package in the packaging bag is reduced as much as possible.
The operation of the end sealer apparatus, first operation and moving from the fully open position to the position of the product height, in two stages of the second operation of moving to the closed position from the position of the product height, the paper drawing device, the second When the heater block is fed toward the heater block of the end seal device by a length corresponding to the amount of folding of the cylindrical packaging material during operation, the control of the end seal device by the controller is rational depending on the stage of operation. And easy and easy to control tight packaging.
In addition, the first and second operation sections, the operation speed (operation time), and the amount of the folded cylindrical packaging material can be set for each package, depending on the size of the package. Thus, the tight packaging can be controlled with high accuracy.

FIG. 1 is a side view and a plan view showing an embodiment of an intermittently operated bag making and filling and packaging machine according to the present invention. FIG. 2 is a motion mechanism diagram of an end seal device used in the intermittent operation type horizontal bag making filling and packaging machine shown in FIG. FIG. 3 is a block diagram relating to a control device for controlling the end seal device used in the horizontal bag making filling and packaging machine shown in FIG. FIG. 4 is an operation explanatory view of the horizontal bag making and filling machine according to the present invention. FIG. 5 is an explanatory diagram showing details of the end seal operation among the operations of the packaging machine shown in FIG. 4. FIG. 6 is an operation flow diagram relating to the end seal device used in the intermittent operation type bag making and filling and packaging machine according to the present invention.

  Hereinafter, an embodiment of an intermittent operation type horizontal bag making and filling machine according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a view showing an embodiment of an intermittent operation type horizontal bag making and filling machine according to the present invention, in which (a) is a side view thereof and (b) is a plan view thereof.

  The intermittent operation type horizontal bag making and filling and packaging machine 1 shown in FIG. 1 forms a bag from a film-like packaging material (hereinafter referred to as “wrapping film”) that is intermittently transferred in the horizontal direction, Is a packaging machine that continuously feeds a package P into a pillow package Bp that is a bag package. The horizontal bag making filling and packaging machine 1 includes a film supply source 2 that rotatably loads and supports a film roll Fr wound with a web-like packaging film Fw on the upstream side of the packaging film, and a web-like packaging film from the film roll Fr. And a paper feed roller 3 for feeding out Fw. The paper feed roller 3 includes a driving roller 3a and a driven roller 3b that sandwich and feed the web-shaped packaging film Fw. The drive-side roll 3a of the paper feed roller 3 is driven from the paper feed servomotor 4 via an appropriate transmission mechanism. The web-shaped packaging film Fw fed out from the paper feed roller 3 is made into a substantially cylindrical shape by pulling the both side edge portions (polymerized portions) Fe and Fe of the packaging film Fw by the cylinder making machine (former) 5. It is composed.

  The web-shaped packaging film Fw that has been bent into a substantially cylindrical shape after passing through the cylinder making device 5 passes through the center seal device 6, and the center seal is applied to the side edge portions Fe and Fe that are overlapped at that time. Thus, it is formed into a tubular packaging material (hereinafter referred to as “tubular packaging film”) Ft. The center seal device 6 includes a paper drawing roller unit 10, a heating bar heater unit 60 disposed immediately after the downstream side, and a weight roller unit 20 in order from the upstream side of the packaging film. . In this embodiment, the center seal device 6 also serves as the paper drawing device of the present invention. The paper drawing roller unit 10 includes a pair of rollers 11 and 12, and the rollers 11 and 12 are rotated at a speed synchronized with each other in the opposite direction upon receiving a driving force from the paper drawing servomotor 13. . Between the peripheral surfaces of the rollers 11 and 12, both side edge portions Fe and Fe on which the web-shaped packaging film Fw bent in a substantially cylindrical shape is sandwiched are sandwiched. The web-shaped packaging film Fw is drawn by receiving the pulling force of the side edge portions Fe and Fe from the rollers 11 and 12, and is sent to the bar heater unit 60 and the perimeter heater unit 20.

  The heating bar heater section 60 includes a pair of bar heaters 61 and 62 that are close to each other so as to sandwich the both side edge portions Fe and Fe of the web-shaped packaging film Fw, and heats both side edge portions Fe and Fe by radiant heat. . The weight rollers 21 and 22 are rotated at a speed synchronized with each other in the opposite direction upon receiving the driving force from the weight roller servomotor 23. The paper drawing servo motor 13 and the weight roller servo motor 23 are controlled so that the roller peripheral speeds of the paper drawing roller portion 10 and the weight heater portion 20 are equal. When the paper feed of the web-like packaging film Fw is stopped for a long time, the bar heater unit 60 has an opening / closing mechanism for moving the bar heaters 61 and 62 close to each other (see FIG. (Not shown). The weight rollers 21 and 22 are not embedded with heat generating means (heaters), and are subjected to center sealing by pressurizing both side edge portions Fe and Fe heated by the bar heaters 61 and 62. The bent packaging film Fw is formed into a cylindrical packaging film Ft by applying a center seal.

  An end seal device 7 is disposed downstream of the center seal device 6. The end seal device 7 is a linear motion type end sealer that is driven to open and close with respect to the cylindrical packaging film Ft in which the paper feed by the center seal device 6 is stopped. During the closing operation, the end seal device 7 approaches the cylindrical packaging film Ft from above and below, presses and heats by sandwiching it, and then applies the end seal, and then opens and closes from the cylindrical packaging film Ft. Separate in the direction. The end seal device 7 forms an end seal portion Se by applying an end seal to the tubular packaging film Ft between the packages P, P that are continuous in the front and rear directions. Through the above steps, the pillow package Bp in which the package P is enclosed in the bag is sequentially manufactured. By incorporating a cutter (a well-known one, not shown here) that cuts the packaging film at the end seal portion Se in the end seal device 7, the pillow package Bp can be individually separated. In the horizontal bag making filling and packaging machine 1, in order to send the article P into the web-like packaging film Fw bent by the cylinder making machine 5, the feeding conveyor 8 is combined.

  FIG. 2 shows a motion mechanism diagram of the end seal device used in the horizontal bag making filling and packaging machine 1 shown in FIG. 2A is a side view of the end seal device, FIG. 2B is a left front view of FIG. 2A, and FIG. 2C is a right front view of FIG. The end seal device 7 shown in FIG. 2 includes upper and lower heater blocks 31a and 31b arranged to face each other in the vertical direction. The heater blocks 31a and 31b are driven synchronously so as to perform an opening / closing operation in the vertical direction. When the heater blocks 31a and 31b are most closed, the tubular packaging film Ft is sandwiched therebetween, and the portions of the packaging film sandwiched so as to be crushed flat are pressurized and heated to be welded.

  A cutter device is incorporated in the end seal device 7. The upper heater block 31a incorporates a cutter 33 in a state of being accommodated in the through hole 34, and the lower heater block 31b has a through hole 35 into which the cutter 33 enters at a position corresponding to the cutter 33. Yes. The upper heater block 31a is provided with a cutter driving device 36 that projects the cutter 33 toward the lower heater block 31b. The cutter driving device 36 is composed of, for example, a known air actuator, operates in accordance with the closing operation of the heater blocks 31a and 31b, and protrudes the cutter 33 toward the lower heater block 31b. Cut the material. The cutter device includes a cutter 33, a through hole 34, and a cutter driving device 36.

  The heater blocks 31 a and 31 b are arranged to be slidable in the vertical direction with respect to the support block 45. That is, the support block 45 holds the slide shafts 46a and 46b so that the slide shafts 46a and 46b are slidable in the vertical direction at both ends in the left-right direction. The both ends of the slide shafts 46a and 46b are connected to the upper end block 47a on each of the upper and lower sides. It is connected by a lower end block 47b. The upper heater block 31a and the cutter driving device 36 are disposed on the lower side and the upper side, respectively, in the upper end block 47a. An intermediate block 48 is slidably supported on the slide shafts 46 a and 46 b in the intermediate region in the longitudinal direction, and a lower heater block 31 b is attached to the upper side of the intermediate block 48.

  An opening / closing drive servomotor 49 is disposed on the support block 45 in order to open / close the heater blocks 31a, 31b in the vertical direction. A lever 51 is attached to the output shaft 50 of the opening / closing drive servomotor 49. One end of the lever 51 is swingably connected to the upper bracket 53a via the upper link 52a, and the upper bracket 53a. Are coupled to the intermediate block 48. Further, the other end portion of the lever 51 is pivotably connected to the lower bracket 53b via the lower link 52b, and the lower bracket 53b is connected to the lower end block 47b. Accordingly, when the opening / closing drive servo motor 49 is driven and the output shaft 50 is rotated, the lower link 52b, the lower end block 47b, the slide shafts 46a and 46b, and the upper end block 47a are moved according to the rotation direction. The upper heater block 31a is opened and closed via the upper link 52a and the intermediate block 48, and the lower heater block 31b is opened and closed. By the operation of the opening / closing drive servomotor 49 as a drive source, the heater blocks 31a, 31b perform an opening / closing operation synchronized with each other with respect to the cylindrical packaging film Ft fed in the horizontal direction.

  In the end seal device 7, the heater blocks 31a and 31b are fixedly arranged in the front-rear direction (paper feeding direction of the tubular packaging film Ft) orthogonal to the opening / closing direction. That is, since the support block 45 of the end seal device 7 is fixedly supported by the fixed frame of the machine on the left and right, both the heater blocks 31a and 31b operate in the paper feed direction of the tubular packaging film Ft. It works only in the vertical direction.

  FIG. 3 is a block diagram relating to a control device 9 for controlling the end seal device 7 provided in the horizontal bag making filling and packaging machine 1 shown in FIG. In FIG. 3, the signal lines related to the control device 9 are for explaining the connection relationship related to the operation of the end seal device 7 in the horizontal bag making filling and packaging machine 1 and show the strict connection relationship. is not.

  In the horizontal bag making and filling machine 1, operations such as paper feeding, paper drawing and end sealer are driven by a motor such as a servomotor. The horizontal bag making and filling machine 1 performs a paper feeding servo for driving the driving side roll 3a of the paper feed roller 3 in order to perform a packaging operation from the feeding of the packaging film and the package P to the packaging of the package P by the packaging film. Motor 4, motor (not shown) for driving the feeding conveyor 8, and rollers 11 and 12 of the paper drawing roller unit 10 that feeds the both side edge portions Fe and Fe on which the web-like packaging film Fw is superimposed are driven. A paper-drawing servomotor 13, a weighting roller servomotor 23 for driving the weighting rollers 21 and 22 of the weighting roller portion 20 that feeds the heated side edge portions Fe and Fe while applying pressure, and a linear motion type end sealer 7. Open / close servo motor 49 for opening / closing the upper and lower heater blocks 31a, 31b is provided. And a control unit 9 for generally controlling the respective operations to control combined. The control device 9 can individually set the operation of each servo motor according to an instruction from the setting / display unit 30.

  For the control device 9, the setting / display unit 30 provided in the horizontal bag making filling and packaging machine 1 uses a film feed amount L for the length of one bag, which will be described later, a folding film feed amount ΔL, and an end of the operation A. The sealer movement amount Ha, the end sealer operation speed Va of operation A (or operation time Ta), the end sealer movement amount Hb of operation B, and the end sealer operation speed Vb of operation B (or operation time Tb) are products to be packaged. It can be set as a parameter according to the specification of the package P. The end sealer moving amount Hb is a half value of the product height H of the package P. The setting of each parameter in the setting / display unit 30 is carried out by feeding and drawing the web-like packaging film Fw and the cylindrical packaging films of the upper and lower heater blocks 31a and 31b in the actual packaging operation in the horizontal bag making filling and packaging machine 1. The opening and closing operations to Ft are performed in association with each other so that they are performed at the same timing. The control device 9 receives these set values and various detection signals and outputs control signals to the servo motors 4, 13, 23, 49 in accordance with the set parameters. Control the behavior. The control device 9 is connected to a storage device for storing / reading data necessary for controlling the operation of the packaging machine, and further reports warnings, warnings, etc. to the operator in accordance with the risk level of the operation status of the packaging machine. This signal can also be output to the notification device.

  FIG. 4 is an explanatory view of the operation of the horizontal bag making filling and packaging machine according to the present invention, and details of the end seal operation are shown in FIG. That is, in FIG. 4 (a), the upper heater block 31a and the lower heater block 31b of the end seal device 7 provided in the horizontal bag making filling and packaging machine 1 operate in a direction in which they approach each other to form a cylindrical packaging film. A state of contact with Ft is shown. FIG. 4B shows the operation of the heater blocks 31a and 31b when the heater blocks 31a and 31b are moved closer to each other to sandwich the tubular packaging film Ft and heat seal is applied. A state is shown in which the cylindrical packaging film Ft is sent out to compensate for the length ΔL of the folding of the cylindrical packaging film Ft by 31a and 31b. Further, FIG. 5 shows details of the operation of the heater blocks 31a and 31b of the end seal device 7 shown in FIG.

  As shown in FIGS. 4 and 5, the closing operation of the heater blocks 31a and 31b of the end seal device 7 is a product that contacts the cylindrical packaging film Ft from the fully opened position of the upper heater block 31a and the lower heater block 31b. Divided into a two-stage motion comprising a first operation A as a closing direction operation up to the height position and a second operation B as a closing direction operation from the product height position to the fully closed position sandwiching the tubular packaging film Ft. ing. The operation section and the operation speed (operation time) for each of the first operation A and the second operation B can be set for each package (item) P.

  As shown in FIGS. 4 (a) and 5, the upper heater block 31a and the lower heater block 31b are located at the most separated position in the vertical direction at the beginning of the packaging cycle (the position indicated by the dotted line in FIG. 4 (a), In FIG. 5, it is in the fully open position). In this state, by the intermittent operation of the packaging machine, the film temporary feed amount L1 substantially equivalent to one normal bag length (= the film feed amount ΔL of the folding film is calculated from the film feed amount L corresponding to one bag length). After the feed of the subtracted feed amount) is finished, the paper feed servo motor 4, the paper draw servo motor 13 and the weight roller servo motor 23 stop driving, and the intermittent feed feed stop period of the cylindrical packaging film Ft is reached. Be started. Thereafter, the upper heater block 31a and the lower heater block 31b are moved in a closing direction with respect to the stopped cylindrical packaging film Ft by the operation of the opening / closing drive servomotor 49 of the end seal device 7. The first operation A, which is the previous operation, is started. In the first operation A, the operation is performed until the upper heater block 31a contacts the peripheral top portion Ftt of the cylindrical packaging film Ft and the lower heater block 31b contacts the peripheral bottom portion Ftb of the cylindrical packaging film Ft. Executed.

  4A and 4B, both heater blocks 31a and 31b that have reached the product height position and are in contact with each other are indicated by solid lines. As shown in FIG. 5, the movement amount Ha and the end sealer operating speed Va of the heater blocks 31 a and 31 b are set by the setting / display unit 30 according to the package (item) P. When the operation time Ta is set, a value obtained by dividing the movement amount Ha by the end sealer operation speed Va is set.

  In FIG. 4B and FIG. 5, the heater block 31a, 31b that is in contact with the cylindrical packaging film Ft is a second operation B that is a subsequent operation of the two-stage motion with respect to the cylindrical packaging film Ft. To start. In the second operation B, the upper heater block 31a and the lower heater block 31b contacting the cylindrical packaging film Ft are pushed into the cylindrical packaging film Ft, and the heater blocks 31a and 31b are flattened. The packaging film Ft is sandwiched and heat sealed. The heater blocks 31a and 31b are pushed and sandwiched without slipping with respect to the cylindrical packaging film Ft.

  In FIG. 4B, the heater blocks 31a and 31b in a state where heat sealing is performed are indicated by alternate long and short dash lines. As shown in FIG. 5, the moving amount Hb and the end sealer operating speed Vb of the heater blocks 31 a and 31 b at that time are set by the setting / display unit 30 for each size of the package P. When the operation time Tb is set, a value obtained by dividing the movement amount Hb by the end sealer operation speed Vb is set.

  In the second operation B of the end seal device 7, on the pillow package body Bp side where the package P has already been sealed, the pillow package body Bp is folded by the heater blocks 31a and 31b onto the packaging film, so that both the heater blocks 31a and 31b. Drawn to the side. The amount of drawing increases as the height of the package P increases. By appropriately determining the length of the package P and the feed amount L corresponding to the length of one bag and setting the position of the cylindrical packaging film Ft sandwiched between the heater blocks 31a and 31b, On the side, the space Sp1 generated between the packaging film and the package P can be made as small as possible, and tight packaging is possible.

  In the second operation B of the end seal device 7, the folding action of the packaging film by the heater blocks 31a and 31b is also generated on the cylindrical packaging film Ft side. At this time, if the feeding of the tubular packaging film Ft is completely stopped, there arises a problem such as the tubular packaging film Ft being strongly pressed against the package P due to the folding action. In consideration of folding of the cylindrical packaging film Ft by both the heater blocks 31a and 31b, the cylindrical packaging film Ft is fed by a feed amount ΔL corresponding to the folding amount. The feeding amount ΔL of the cylindrical packaging film Ft is driven in synchronism with all the servo motors related to paper feeding (the paper feeding servo motor 4, the paper drawing servo motor 13, and the weight roller servo motor 23). Is done by. The front and rear ends of the package P before delivery of the feed amount ΔL are indicated by broken lines, and the state after delivery is indicated by a solid line. Thereby, for each packaging cycle in which packaging for one bag is performed, the film feed amount L corresponding to one bag length obtained by adding the feed amount ΔL corresponding to the folding amount to the temporary film feed amount L1 is sent, On the front side in the carry-out direction of the pillow packaging bag, the cylindrical packaging film Ft approaches the heater blocks 31a and 31b together with the package P, and the cylindrical packaging film Ft is not strongly pressed against the package P, The space Sp2 generated between the package P and the package P can be made as small as possible, and tight packaging is possible.

  The feed amount ΔL for sending out the cylindrical packaging film Ft can be set for each package (item) P, specifically, between the rear side ends of the heater blocks 31a and 31b and the front side end of the package P. It is determined by the length of the wrapping film and the height of the package P. The amount of feed ΔL increases as the height of the package P increases. Further, during the second operation B, it is preferable that the film feeding speed for feeding the folding amount ΔL is synchronized with the closing speed of the heater blocks 31a and 31b. As a result, folding of the packaging film and feeding of the cylindrical packaging film Ft are performed in a well-balanced manner, and an unreasonable force does not act on the packaging film or the package P.

  In order to increase the packaging speed, the first operation A and the second operation B are continuously performed without any gap, and the upper heater block 31a and the lower heater block 31b are also provided for the cylindrical packaging film Ft. The sending of the feed amount ΔL may be started simultaneously with the start of the second operation. The stop of the cylindrical packaging film Ft in the contacted part should just be implement | achieved by the time when both heater blocks 31a and 31b contact the cylindrical packaging film Ft. In this case, in the cylindrical packaging film Ft, both the heater blocks 31a and 31b come into contact with the cylindrical packaging film Ft and the second operation B is started at the same time as the first operation A is completed. The closing operation is continuously performed, and additional sending of the feed amount ΔL is started.

  FIG. 6 shows an operation flow relating to the end seal device 7 used in the intermittent operation type bag making and filling and packaging machine 1. When the operation flow is started, it is first determined whether or not the operation status, that is, the operation state of the packaging machine 1 is “0” (step 1; abbreviated as “S1”, the same applies hereinafter). The operation status “0” indicates that both heater blocks 31a and 31b are in the fully open position. If the operation status is “0”, it is determined whether or not the end sealer is at the start timing of the first operation A (the description in the figure is abbreviated as “operation A”) (S2). If the end sealer is not the start timing of the first operation A, it goes out of the operation flow and repeats the operation flow again (hereinafter, if it goes out of the operation flow, it is again unless it is the end of the operation flow). , Go back to the beginning of the operation flow and repeat the operation flow). If the end sealer is at the start timing of the first operation A, the end sealer executes the first operation A (S3), sets the operation status to “1” (S4), and then goes out of the operation flow. .

  Next, when the operation flow is started again, the operation status is “1”, so that “No” is determined in S1, and it is determined whether or not the operation state of the packaging machine 1 is “1” in S5. . Since the determination in S5 is “Yes”, it is determined whether or not the end sealer has finished the first operation A (S6). If it is determined in S6 that the end sealer has not finished the first operation A, the operation flow goes out. If the first operation A of the end sealer has progressed and the end sealer has completed the first operation A in the subsequent execution of the operation flow, the end sealer will execute the second operation B (the description in the figure is “operation B”). (S7) is executed (S7), the wrapping film is fed by a folding amount [Delta] L (S8), the operation status is set to "2" (S9), and then the operation flow is exited.

  Next, when the operation flow is started again, since the operation status is “2”, it is determined to be “No” in S1 and S5, and it is determined whether or not the operation state of the packaging machine 1 is “2” in S10. Determined. Since the determination in S10 is “Yes”, it is determined whether or not the end sealer has finished the second operation B (S11). If it is determined in S11 that the end sealer has not finished the second operation B, the operation flow goes out. If the second operation B of the end sealer has progressed and the end sealer has completed the second operation B in the subsequent execution of the operation flow, the operation status is set to “3” (S12), and then the operation flow Go outside.

  Next, when the operation flow is started again, since the operation status is “3”, it is determined “No” in S1, S5, and S10, and the operation state of the packaging machine 1 is “3” as a result of S13. Is determined. Since the determination in S13 is “Yes”, it is determined whether or not the end sealer is at the opening start timing (S14). If the end sealer is not at the opening start timing, it goes out of the operation flow. If the end sealer is at the opening start timing, the end sealer performs an opening operation (S15), sets the operation status to "4" (S4), and then goes out of the operation flow.

  Next, when the operation flow is restarted, the operation status is “4”, so that “No” is determined in S1, S5, S10, and S13, and the operation state of the packaging machine 1 is “4” after S17. It is determined whether or not. Since the determination in S17 is “Yes”, it is determined whether or not the end sealer has finished the opening operation (S18). If it is determined in S18 that the end sealer has not opened and the operation has not been completed, the operation flow is exited. If the end sealer has completed the opening operation, the operation status is set to “0” (S19), and then the operation flow is exited.

  As described above, the intermittent operation type horizontal bag making and filling and packaging machine 1 has a simple configuration including a direct-acting end sealer device in which the end sealer only opens and closes up and down as an end seal operation. This is a small-sized and inexpensive intermittent operation type horizontal bag making and filling machine, and in such a horizontal bag making and filling machine, it occurs in the tubular packaging film Ft due to the closing operation (second operation B) of the end sealer device 7. The cylindrical packaging film Ft is sent out together with the package P by a length ΔL corresponding to the folded portion. In accordance with the closing operation of the end sealer 7, the operation of feeding the cylindrical packaging film Ft by a preset length can prevent the positional displacement of the package P on the cylindrical packaging film Ft, and the inside of the packaging bag It is possible to realize tight packaging in which the space around the package P is reduced as much as possible.

  In the above embodiment, the paper feed roller 3 and the center seal device 6 also serve as a paper drawing device. Specifically, in addition to the paper feed roller 3 and the paper feed servo motor 4 that drives the paper feed roller 3, the web-like packaging film The roller 11 and 12 of the paper drawing roller unit 10 that feeds the both side edge portions Fe and Fe of Fw, and the paper drawing servo motor 13 that drives them, and the weight rollers 21 and 22 that seal the center seal unit Se. However, the center roller is not limited to this, and the center seal is arranged immediately after the heater bar for heating and the heated both side edge portions Fe. , When a pressure roller for heat-sealing by pressing Fe and a servo motor for the pressure roller for driving the pressure roller are disposed, It can also cause play a paper drawing the servomotor pressure rollers to drive them and. In the above embodiment, the servo motors 4, 13 and 23 for driving the rollers exclusively are provided as the driving means for paper feeding (paper drawing). It is obvious that the driving force from one servo motor may be distributed to a plurality of rollers via a transmission mechanism and driven in synchronization.

DESCRIPTION OF SYMBOLS 1 Horizontal type bag making filling packaging machine 2 Film supply source 3 Paper feed roller 3a Drive side roller 3b Driven side roller 4 Paper feed servo motor 5 Cylinder (former)
6 Center seal device 7 End seal device 8 Feeding conveyor 9 Control device 10 Paper drawing roller unit 11, 12 roller 13 Paper drawing servo motor 20 Fabrication roller unit 21, 22 Fabrication roller 23 Fabrication roller servomotor 30 Setting / display unit 31a Upper heater block 31b Lower heater block 33 Cutter 34 Through hole 35 Through hole 36 Cutter drive device 45 Support block 46a, 46b Slide shaft 47a Upper end block 47b Lower end block 48 Intermediate block 49 Open / close drive servomotor 50 Output Shaft 51 Lever 52a Upper link 52b Lower link 53a Upper bracket 53b Lower bracket 60 Bar heater portion 61, 62 Bar heater Fr Film roll Fw Web-like packaging film Fe, Fe Both side edge portions (polymerization portion) t Cylindrical packaging film Ftt Perimeter top portion Ftb Perimeter bottom portion Se End seal portion P Package Bp Pillow package A First operation B Second operation L Film feed amount L1 substantially equivalent to bag length Temporary film feed amount ΔL Folding film feed amount H Product height Ha Operation A end sealer movement amount Va Operation A end sealer operation speed Ta Operation A end sealer operation time Hb Operation B end sealer movement amount Vb Operation B End sealer operating speed Tb Operation B end sealer operating time Sp1, Sp2 Space

Claims (4)

A paper drawing device for feeding the cylindrical packaging material in a lateral direction by intermittent operation; and a heater block that opens and closes the cylindrical packaging material in a sandwiching direction, and feeding the cylindrical packaging material by the paper drawing device Is equipped with an end seal device that applies an end seal to the tubular packaging material by being sandwiched by the heater block,
In the intermittent operation type horizontal bag making filling and packaging machine for manufacturing a bag package in which a package is enclosed in a bag formed from the cylindrical packaging material,
In the closing operation from the contact of the heater block to the cylindrical packaging material to the fully closed position where the cylindrical packaging material is sandwiched , the paper drawing device responds to the fact that the heater block folds the cylindrical packaging material. intermittent operation type lateral bag filling and packaging machine which the folding amount of the length the tubular packaging material, characterized in that to leave the feed toward said heater block of said end sealing apparatus.   Each of the paper drawing device and the end seal device includes a servo motor as a drive source, and the servo motor is controlled by a control device of the packaging machine according to the specifications of the package. The intermittent operation type horizontal bag making filling and packaging machine according to claim 1. The closing operation of the end seal device includes a first operation from a fully open position to a product height position corresponding to the height of the package, and a second operation from a product height position to a fully closed position. It is divided into
In the control device, an operation section, an operation speed or an operation time of the heater block in each of the first operation and the second operation, and a sending amount for the folding are set for each specification of the package. The intermittent operation type horizontal bag making filling and packaging machine according to claim 2.   4. The intermittent operation according to claim 3, wherein a feeding speed of the cylindrical packaging material with respect to a length of the folded portion in the second operation is controlled in synchronization with a closing speed of the heater block. Horizontal type bag making filling and packing machine.

Images