JP5658855B2 - Horizontal packaging machine for easy cleaning of heater blocks - Google Patents

Description

  When cleaning the heater block of the box motion type end sealer in the horizontal wrapping machine, the invention can easily open the unloading conveyor (shuttle type) provided with a transition device with a simple configuration, The present invention relates to a structure for exposing a heater block.

  Conventionally, as shown in FIG. 7, a horizontal bag making filling and packaging machine sequentially delivers and supplies articles 72 at predetermined intervals by a supply conveyor into a cylindrical film which is formed into a cylindrical shape by a bag making machine and transferred horizontally. At the same time, a center seal is applied to the overlapping surface of the longitudinal edge portion of the cylindrical film supplied with the article by a center seal device, and the end seal device 73 is used before and after sandwiching the article of the cylindrical film. A pillow package 74 that is sealed and cut is manufactured.

  That is, the horizontal automatic packaging machine forms the web-shaped packaging material 2 into a cylindrical packaging material, and sends the product 72 as a packaged product into the cylindrical packaging material that runs in the horizontal direction. This is a packaging machine capable of continuously producing the packaged bags. The web-shaped packaging material 2 fed from the film roll 70 by the guide roll and the feeding roller is formed into a cylindrical shape while being run by a molding device 71 such as a former. The cylindrical wrapping material is slid on the guide plate 77 by being pulled by a feeding means including a pair of paper drawing rollers 75 sandwiching the aligned both side edges. In the downstream of the feeding means 75, a center seal means comprising a pair of rotary seal rollers 76 having a heating seal line on the cylindrical peripheral surface is disposed below the guide plate 77. The center seal means No. 76 forms a center seal by heating and pressurizing both side edges of the cylindrical packaging material to weld them. Lateral seal means 73 is provided downstream of the center seal means 76, and the cylindrical packaging material is transversely sealed before and after the product to produce a bag package.

FIG. 8 is an enlarged view of the end seal portion of FIG.
As shown in FIG. 8, the end seal device 80 includes heat seal devices 81 (including 85) and 82 (86) including a pair of cutter blades facing each other up and down across the transfer path of the tubular film. ), With the cylindrical film sandwiched by both heat-sealing devices, horizontally moved at the same speed as the cylindrical film transfer speed along the cylindrical film transfer direction to provide end sealing, and a built-in cutter blade After cutting the center portion of the end seal, the cutter blades are preferably retracted and moved away from each other while being retracted, and are again brought into contact with each other and repeatedly moved horizontally. Such a system of the end seal device is referred to as a box motion type (for example, JP-A-2006-31470: paragraphs 0002 to 0003). Box motion is shown in FIG.

  In FIG. 6, the heater blocks 85 and 86 are closed with respect to the film 2 as shown by an arrow from the opened state, and are sealed with the film sandwiched between 85 'and 86'. At the time of sealing, as described above, the tubular film is horizontally moved at the same speed as the transfer speed of the tubular film along the transfer direction of the tubular film while sandwiching the tubular film. The trajectory is like 61 and 62 and performs box motion.

  A crossover device is provided before and after such a box motion type end seal device so that the cylindrical film containing the packaged object can be stably moved between the upper and lower heater blocks of the end seal device. . As shown in FIG. 5 (b), when the upper and lower heater blocks 85 and 86 of the end seal device are closed, the moving device 96 and 106 are moved backward to form an opening. As shown in (a), when the upper and lower heater blocks 85 and 86 of the end seal device are opened, the moving rollers 96 and 106 move forward to operate to eliminate the opening.

  In addition, since the end seal device moves while being closed during the end seal, the transport belt frame of the transition device can also be freely moved in the horizontal direction. Thus, the crossing device, that is, the moving rollers 96 and 106 operate following the movement of the heater blocks 85 and 86 (see FIG. 6) in FIG. 5B. The reason why the opening portion is eliminated when the end seal device is opened is that it is possible to prevent the gap between the conveyor belts stretched over the conveyor belt frame from being greatly opened. (For example, see JP-A-2-282003.)

1 shows an enlarged perspective view of the left side portion of the crossing device in FIG. 8, and FIG.
As shown in FIG. 5, the crossing device is a belt conveyor that is movable back and forth symmetrically on the upstream side and the downstream side with the end seal device interposed therebetween. The belt conveyor includes two movable rotatable rolls 95 and 96 (or 105 and 106) and four fixed rotatable rolls 91 to 94 (or 101 to 104). The pair of moving rollers 95, 96 or 105, 106 (FIG. 5) are installed on the same mounting plate (not shown). Reverse L-shaped interlocking levers 7, 6 and 13 (FIGS. 1 to 3) on which cam followers 5 and 14 are disposed are fixed to the mounting plate.

  As shown in FIG. 8, the cam followers 5 and 14 are engaged with the cam grooves 12 and 15 of the members 10 and 16 provided with the cam grooves. The members 10 and 16 provided with the cam grooves 12 and 15 are fixedly disposed on the lower lifting block 82. Accordingly, the crossing device operates following the opening / closing operation of the end seal device and the advance / retreat in the horizontal direction.

  That is, as shown in FIG. 8A, when the heater blocks 85 and 86 are opened, the cam followers 5 and 14 are positioned at the upper ends of the cam grooves 12 and 15 and are integrated with the cam followers 5 and 14. The levers 13 and 36 and the moving roller mounting plates 35 and 46 (see FIGS. 8 and 4) move so as to close in the center direction. As a result, the moving rollers 96 and 106 (FIGS. 8A and 5) at the tips of the moving roller mounting plates 46 and 35 move in the closing direction. Conversely, as shown in FIG. 8B, when the heater blocks 85 and 86 are closed, the cam followers 5 and 14 are located at the lower ends of the cam grooves 12 and 14 and are integrated with the cam followers 5 and 14. Along with the interlocking levers 13 and 36, the moving rollers 96 and 106 at the tips of the moving roller mounting plates 46 and 35 integrated therewith are moving in the opening direction.

  In the end seal device having the above-described configuration, the film residue deposited by the heat of the heater block may adhere to the seal surface of the heater block. Further, when the packaged article is caught between the upper and lower top sealers, the packaged article may be clogged in the seal groove portion of the seal surface of the heater block. As described above, in a state where foreign matter adheres to the seal surface of the heater block, not only a good end seal cannot be performed, but also a seal failure occurs. For this reason, it is necessary to clean the seal surface of the heater block at an appropriate timing. Clean at least once a day. In addition, when the bite occurs or when the product bites, it is always performed at the end of the operation, so the frequency is quite high.

  Conventionally, these cleaning operations are visually confirmed by an operator, and when the sealing surface is dirty, the sealing surface is manually cleaned. When cleaning the sealing surface of the heater block, since the upper heater block is always exposed, the end seal device can be opened and cleaned using a wire brush. However, when the end seal is open, the lower heater block is located under the crossing device belt and cannot be cleaned as it is.

  Therefore, as shown in FIG. 9, the lower heater block is moved upward to open the crossover device, the seal surface of the lower heater block is exposed from the opening of the crossover device, and the end seal device is closed. A half-open state (the cam follower 93 is in the position shown in the figure) was created, and the wire brush 111 was placed in a slight gap of the end seal device to clean the seal surface 112. In addition, when the dirt is severe, the crossing device is disassembled using a tool and a work space is secured. As described above, the space between the seal surfaces of the upper and lower heater blocks is so narrow that a sufficient space for cleaning the seal surfaces cannot be secured, and cleaning is not easy.

  As a proposal for this, there is a method disclosed in Japanese Patent Application Laid-Open No. 2009-091033. This is provided with means for releasing the interlocking between the transfer conveyor of the crossing device and the end seal device. Guide means for allowing the discharge-side transport conveyor of the transition device to move in the front-rear direction asynchronously with the movement of the heater block, and restraining the movement by the guide means at a position close to the heater block of the discharge-side transport conveyor of the transition device In the normal state, the transfer conveyor of the transfer device and the end seal device are interlocked by restraining and fixing the movement of the transfer device by the guide means at a position close to the heater block. At the time of maintenance, the fixing means is released, and the discharge-side transport conveyor of the transfer device is moved asynchronously with the movement of the heater block by the guide means, so that a work space can be easily secured around the heater block.

  However, the method disclosed in Japanese Patent Application Laid-Open No. 2009-091033 is a method in which a guide having a slide rail and a slider having a stopper ball are added, and there is a problem that the structure is complicated and the cost is increased.

JP-A-2-282003 JP 2009-91033 A JP 2000-168716 A

  The present invention is a horizontal type equipped with an end seal device that can easily fix and release the interlocking between the discharge-side transport conveyor of the transition device and the heater block of the end seal device with a simple configuration, and facilitates cleaning of the heater seal surface. The purpose is to provide a packaging machine.

  The present invention relates to a horizontal packaging machine provided with an end seal device, in which an interlocking device provided with a groove cam is fixed to a lifting platform of a lower heater block of the end seal device, and the discharge side conveyance of the crossover device is fixed to the groove cam By engaging the cam follower provided on the interlocking lever provided on the conveyor, the opening and closing of the end seal device and the advancement and retraction of the crossing device are interlocked, and the upper part of the groove cam is opened to release the cam follower. The interlocking lever provided with the cam follower is configured to be pivotable upward, and the interlocking lever is detachably fixed to the conveyor.

  That is, the transfer device for the transfer conveyor of the box motion type end seal portion of the horizontal packaging machine of the present invention is a transfer device for the transfer conveyor of the box motion type end seal portion of the horizontal packaging machine, and is below the end seal device. Open and close the end seal device by fixing the interlocking device with the groove cam to the lifting block of the side heater block and engaging the cam follower provided on the interlocking lever provided on the discharge conveyor of the device across the groove cam In the transfer device of the above-mentioned conveyor for interlocking the advance and retreat of the transfer device, the upper portion of the groove cam is opened by notching, the cam follower can be released from the engagement, and the interlock lever provided with the cam follower can be turned upward It is characterized by comprising.

  Further, the groove cam of the interlocking device is formed such that the upper end is close to the center of the transfer device for the transfer conveyor and the lower end is formed outside the transfer device for the transfer conveyer. As the heater block is raised, the cam followers on both sides are separated from each other, and in accordance with this, the both-side moving rollers in the transition portion are separated.

  Still further, the interlocking lever is detachably fixed to the moving roller mounting plate of the transition part, and the interlocking lever can be pivoted upward by releasing the fixing, and the moving roller of the transition part is The heater seal surface is exposed at the transition portion by moving away from the transition portion.

  The horizontal wrapping machine of the present invention can fix and release the linkage between the discharge-side transport conveyor and the heater block of the end seal device, and the opening of the crossover device is easy, so that the heater seal surface can be easily cleaned. It has the remarkable effect of becoming. Further, since the interlocking with the heater block can be fixed and released by releasing one screw, the structure is simple and the operation is also easy.

It is an expansion perspective view of the left side part of the crossing device (shuttle type carry-out conveyor) of the end seal part of the box motion type of the horizontal packaging machine of the present invention. It is an expansion perspective view of the right side part of the transition apparatus (shuttle type carry-out conveyor) of the end seal part of the box motion type of the horizontal packaging machine of the present invention. It is a partial explanatory view of the opening operation of the crossing part at the time of cleaning of the box motion type end seal part crossing device (shuttle type carry-out conveyor) of the horizontal packaging machine of the present invention. FIG. 4 is a structural diagram (disassembled perspective view) of an opening operation of the crossing device (shuttle-type carry-out conveyor) in FIG. 3. It is explanatory drawing of the movement operation | movement of the transition part (moving roller 96,106) of the transition apparatus of the box motion type end seal part of the horizontal packaging machine of invention. It is a figure which shows the locus | trajectory of the box motion type end seal apparatus of a horizontal packaging machine. It is a figure which shows the basic structure of a horizontal packaging machine. It is explanatory drawing of the opening | release operation of the transition part at the time of the cleaning of the transition apparatus (shuttle-type carry-out conveyor) of the box motion type end seal part of the horizontal packaging machine of invention. It is explanatory drawing of the cleaning operation | movement of the box motion type end seal apparatus of the conventional horizontal packaging machine.

  Hereinafter, the structure and operation of the transfer device for the transfer conveyor of the box motion type end seal portion of the horizontal packaging machine of the present invention will be described with reference to FIGS.

  FIG. 1 is a left side portion 3 (a portion corresponding to the upstream conveyor 88 in FIG. 8A) of the crossing device (shuttle-type carry-out conveyor) of the box motion type end seal portion of the horizontal packaging machine of the present invention. 8 (a) and FIG. 8 (b) show enlarged perspective views of portions indicated by 5, 10, 35, 36, and 106). FIG. 2 is a portion corresponding to the right side portion 4 (the downstream conveyor 89 in FIG. 8A) of the box motion type end seal portion transition device (shuttle-type carry-out conveyor) of the horizontal packaging machine of the present invention. The expansion perspective view of the part shown by 14, 16, 46, 13, 95, 96 of Fig.8 (a) and FIG.8 (b) is shown.

  FIG. 4 shows an exploded perspective view of a portion made up of 13, 14, 42 and 44 in FIG. In FIG. 4, reference numeral 46 denotes a support plate that supports the moving rollers 96 and 95 of the transport conveyor 47. The support plate 46 is fixed to the interlocking lever 13 by the fixing member 43 through the intermediate member 45. The intermediate member 45 is fixed to the support plate 46. The fixing member 43 is fixed to the intermediate component 45 by a fastener (screw member) 44, and by disengaging the screw member 44, the intermediate member 45 and the fixing member 43 are disengaged, and the interlock lever 13 As shown in FIG.3 (c), it can rotate to upper right. A structure similar to that shown in FIG. 4 is also provided on the left side portion 3 of the crossing device (shuttle-type carry-out conveyor) shown in FIG. 1. As shown in FIG. Is removed so that the shaft 42 can be rotated to the upper right.

  The interlocking lever 13, the intermediate member 45, and the support plate 46 are provided with holes 55, 56, and 57. The rotary shaft member 42 passes through the holes and is fixed to the support plate 46. In the member 16 having the cam groove (FIG. 8B), the upper end of the cam groove is bifurcated as shown by 50 and 51 in FIG. The cam follower 14 provided in the can is freely inserted into and detached from the cam groove 15 (FIG. 2) from the opening 52. In addition, although the other side (back surface side) of FIG. 2 is not shown in figure, it has the same structure as the above.

  FIG. 3 is a partial explanatory view of the opening operation of the transition part during cleaning of the box motion type end seal part transition apparatus (shuttle-type carry-out conveyor) of the horizontal packaging machine of the present invention. The opening operation will be described with reference to the structural view of the opening operation of the right side portion of the crossing device (shuttle-type carry-out conveyor) in FIG.

  3, first, the fasteners 44 and 48 (see FIG. 2) are rotated and loosened to disengage the interlocking lever 13 from the support plate 46 and the intermediate member 45 (FIG. 4). It can be rotated clockwise. Next, the interlocking lever 13 is rotated clockwise as shown by the arrow in FIG. 3B to the state shown in FIG. The cam follower 14 can be freely moved upward by an upper end opening 52 (50 and 51 in FIG. 4) that is bifurcated at the upper end of the cam groove of the member 16 having the cam groove.

  When the moving roller 96 (FIG. 5), which is free to advance and retreat in the state of FIG. 3C, is moved to the right to open the heater block portion, a space is opened above the heat seal surface 87 of the lower heat block 86. Therefore, since the heat seal surface can be cleaned with the metal brush as shown in FIG. 9 even when the heat block is fully opened, the cleaning operation is facilitated. In order to secure a space for cleaning, only one interlocking lever may be opened in FIG. Further, in such a mechanism in which the heat seal surface is opened by the rotation of the interlocking lever 13, the cam follower is provided on the heater block side, and the member having the cam groove is fixed to the front end side of the belt frame of the crossing device. In the conventional example (Japanese Patent Laid-Open No. 2009-91033) in which box motion is performed, the structure is complicated and cannot be easily configured.

  The above is the interlocking lever 13 at the right side portion (the downstream conveyor 89 in FIG. 8A) of the crossing device (shuttle-type carry-out conveyor) of the box motion type end seal portion of the horizontal packaging machine of the present invention. However, the same operation is also performed on the left side portion (portion corresponding to the upstream conveyor 88 in FIG. 8A) of the crossover device (shuttle type carry-out conveyor).

  That is, in FIG. 3, first, the fasteners 43 and 49 (FIG. 1) are rotated and loosened to disengage the interlocking lever 7 from the support plate and the intermediate member (not shown), with the shaft 31 (FIG. 3) as the center. Can be rotated counterclockwise. Next, the interlocking lever 7 is rotated counterclockwise as shown by the arrow in FIG. 3B to the state shown in FIG.

  When the moving roller 106 (FIG. 5) is moved to the left in the state of FIG. 3 (c), a space is opened above the heat seal surface 87 of the lower heat block 86. Similarly, as shown in FIG. The heat seal surface can be easily cleaned with a simple metal brush.

  Since the structure of the transition device of the present invention is to clean the heat seal surface, if the interlocking lever is opened on only one side, the cleaning can be easily performed, but when the work is performed with a tool because it is very dirty. Opening both sides can secure the work space.

  When the upper and lower heater blocks approach the transfer device for the transfer conveyor of the box motion type end seal portion of the horizontal packaging machine of the present invention, the cam followers on both sides approach as the lower heater block rises. Along with this, in the transfer device for the transfer conveyor of the box motion type end seal part of the horizontal type packaging machine in which the moving rollers on both sides of the transfer part are separated, an interlocking device provided with a groove cam on the lifting block of the lower heater block of the end seal device In the above-mentioned transfer conveyor crossing device that interlocks the opening and closing of the end seal device and the advancement and retraction of the crossover device by engaging the cam follower provided on the interlocking lever provided on the discharge conveyor of the crossover device to the groove cam, The upper part of the groove cam is opened by cutting it out so that the cam follower can be disengaged from the cam. By Oroa of disposed the interlocking lever is pivotally constructed over, separating cam groove and the cam follower with a simple structure, in which it was possible to open the heat seal surface.

  Further, the opening of the heat seal surface is configured such that the interlocking lever is detachably fixed to the moving roller mounting plate of the crossing portion, and the interlocking lever is pivotable upward by releasing the fixing. This is realized by a structure in which the moving roller of the transition portion is moved away from the transition portion and the heater seal surface is exposed at the transition portion.

  As described above, in the conventional crossover device in which the member having the cam groove is attached to the moving roller side of the crossing device, the member having the cam groove integrated with the moving roller is obstructive. Since the heater seal space cannot be opened, it must be a complicated mechanism for retracting the moving roller itself as in the prior art.

  The transfer device for the transfer conveyor of the box motion type end seal portion of the horizontal packaging machine of the present invention can easily secure a work space above the heater seal surface of the lower heat block by removing only two fasteners. The work efficiency is improved and the industrial utility of the horizontal packaging machine having the structure is high.

2 Film 3 Left side portion of transfer device (shuttle type carry-out conveyor) 4 Right side portion of transfer device (shuttle type carry-out conveyor) 5 Cam follower 6 Link lever 7 Link lever 9 Cam groove 10 Member provided with cam groove 11 Cam groove Provided member 12 Cam groove 13 Interlocking lever 14 Cam follower 15 Cam groove 16 Member provided with cam groove 42 Screw 43 Fixed plate 44 Fastener 45 Intermediate member 46 Moving roller mounting plate 47 Conveyor 50 Member provided with cam groove 51 Cam groove 52 Opening 71 Molding part 72 Product 73 End seal device 74 Packaged goods 81 Upper elevating block 82 Lower elevating block 85 Upper heater block 86 Lower heater block 88 Upstream conveying conveyor 89 Downstream conveying conveyor 91-94 fixed Rollers 95, 96 Moving rollers 101- 04 fixed rollers 105 and 106 move the roller 111 wire brush 112 heat seal surface

Claims (3)

In the transfer device of the transfer conveyor of the end seal part of the box motion type of the horizontal packaging machine,
An end seal device is provided by fixing an interlocking device provided with a groove cam to the elevating block of the lower heater block of the end seal device, and engaging the cam follower of the interlocking lever provided on the discharge-side transport conveyor of the device across the groove cam. The opening and closing of the bridge and the movement of the crossing device are interlocked, the groove cam is opened by notching the upper part, the cam follower can be disengaged from the engagement, and the interlocking lever with the cam follower is configured to be able to pivot upward. The transfer device of the conveyor for the end seal part of the box motion type of the horizontal packaging machine.   The groove cam of the interlocking device has an upper end that is close to the center of the transfer device for the transfer conveyor and a lower end that is formed outside the transfer device for the transfer conveyer. When the upper and lower heater blocks approach, the lower heater block 2. The box motion type end seal portion of the horizontal packaging machine according to claim 1, wherein the cam followers on both sides are separated as the height rises, and the both side moving rollers are separated from each other along with the cam followers. Conveyor transfer device. The interlocking lever is detachably fixed to the moving roller mounting plate of the transition part, and the interlocking lever is configured to be pivotable upward by releasing the fixing, and the moving roller of the transition part is moved to the transition part. 3. The transfer device for a transfer conveyor of a box motion type end seal portion of a horizontal packaging machine according to claim 2, wherein the heater seal surface is exposed at the transfer portion.