JPH04132013U - Heat sealing machine for packing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To perform heat sealing reliably by preventing a pack film from being cut by the weight of the object to be packed during heat sealing. [Structure] Film pressers are installed on both the seal bar 9 and the press bar 10 above and below the heat sealing part. Then, in conjunction with the press-fitting of the heat-sealed portion, the pack film is pressed and held by film pressers above and below the heat-sealed portion. In this way, heat sealing is performed while holding the pack film between them.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention can be used in a device that continuously packs waste such as garbage or products. This relates to a heat sealing machine.

0002

[Conventional technology]

Generally, this type of device uses a tube-shaped pack film as shown in Figure 4. There is a continuous packing device that uses This device inputs the items to be packed from the input port. It enters the pack film whose lower opening is fused and closed, and after being put in, it is transported by a feed roll. After feeding a certain amount of packaging film, it is processed by a heat sealing machine. This is a device that fuses and fuses. The heat sealing machine of this device uses an electric heater. It consists of a seal bar for fusion and a presser bar for pressing the seal. A pack film is sandwiched between them, and two bars are pressed together to fuse and cut. .

0003

[Problem that the idea aims to solve]

However, if the item to be packed is too full and heavy, the packing film At the same time as the tension is applied and the seal bar melts and softens, that part is removed by the weight of the item to be packed. This may cause the pack film to be cut and the seal to be torn, or if a tear occurs. Even when this does not occur, there is a problem in that the sealing strength is significantly weakened.

0004 This invention was made in view of the above problems, and the purpose of this invention is The filter prevents the packaging film from being cut due to the weight of the items to be packed during heat sealing. We offer a heat sealing machine for pack equipment that can perform heat sealing reliably. It is to serve.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, the heat sealing machine for the pack device of the present invention has a seal bar 9. In conjunction with the pressure bonding of the presser bar 10, the pack film is applied above and below the sealing part. 6 was provided with a film pressing means for supporting the film under pressure. In other words, above the heat seal part At the top and bottom, place a film presser on both the seal bar 9 and the presser bar 10. Installed and linked to the crimping of the heat-sealed part, there is a film presser on the top and bottom for the pack. The film 6 can be pressed and held.

[0006]

[Effect]

The film holders installed above and below the heat-sealed part keep the heat-sealed part Before crimping, it is pressed and pressed against the pack film 6. Therefore seal crimp Sometimes the weld is already able to hold its own weight, so tension due to its own weight is applied directly to the welded part. There is no need to cut the pack film 6. Press the film below the seal. The support has the function of directly holding the weight of the item to be packed, and the film press above the seal area. Even the packing fill between the upper end of the holder 1 and the seal part is caused by the weight of the object to be packed. It has the function of suppressing the tension of the drum 6.

[0007]

【Example】

The pack device holds a tubular pack film 6 as shown in FIG. The holder 1, the feeder 2 that feeds the pack film 6, and the pack film 6 are A heat sealing machine 3 that seals sheets and a stock section 4 that stocks packed bags. It consists of The pack film 6 is folded into cassettes, and there are dozens of them. It has a length of m. The pack film 6 is inserted into the inside of the holder 1 through the upper end. It is threaded downward. In addition, the bag lower opening 20 of the pack film 6 is fused. Since it is closed, a pack bag body 7 is formed inside the pack film 6. Up When items to be packed are thrown in from the input port 5 on the side, they enter the pack bag body 7. Next Then, the both side edges of the pack film 4 are rolled with the feed roll 2a of the feeder 2 located below this. The packing film 6 is fed downward by pinching and rotating the feed roll 2a. Same as this At times, the items to be packed are also sent downward. This feed amount is adjusted according to the size of the item to be packed. It is an appropriate length. After this, the seal of the heat sealing machine 3 located below the feeder 2 is By crimping the lever 9 and the presser bar 10, the pack film 6 is Perform sealing and fusing. At this time, the inside of the holder 1 along with the upper opening of the pack body 7 Since the lower opening 20 of the pack bag body 7 formed in the section is also fused and closed at the same time, the next pack It becomes possible to input things. Also, since it will be fused during heat sealing, packed bags will It falls downward under its own weight and is stored in the stock section 4 at any time. This device operates as described above. It is something that is done. In this invention, we devised heat sealing machine 3 in a series of functional operations. was applied. During actual heat sealing, if the object to be packed is heavy, the fused surface may A situation may arise in which the seal strength cannot be ensured by cutting under its own weight. Because of my own weight again Due to the tension generated between the upper end surface of holder 1 and the seal part, A similar situation occurs. To prevent this, seal bars 9 are placed above and below the seal. Press and hold the pack film 6 just before the pressing bar 10 presses it. A film pressing means was installed for this purpose.

[0008] The heat sealing machine 3 mainly uses a sealing bar 9 and a presser bar as shown in FIGS. 1 and 2. 10, each connected by two slide shafts 11, and the slide shaft The seal is opened and closed by moving it back and forth on the seat 11. S The bar 9 is heated by having an electric heater installed therein. Seal bar 9 The movement means of the presser bar 10 is, for example, pulling by a wire or a slide shaft. Any type of screw rotating/sliding type with a screw mechanism may be used. Press with seal bar 9 The bar 10 is fixed to a bar mount 12, and the bar mount 12 is fixed to a slide block 8. Fixed. The two slide shafts 11 are attached to the slide block 8 as shown in Figure 1. Since they are inserted as shown, the seals can be opened and closed in parallel. Figure 2 As shown in the figure, two guide holes 21 are drilled in the bar frame 12 with an appropriate span. has been done. A slide pin 13 is slidably inserted into each guide hole 21. , the holding bar 14 placed in front of the slide pin 13 is connected to the slide pin 13. A film pressing rubber 15 is attached to the holding bar 15. This film press Evening rubber 15 serves as a lower film holding part. Film presser rubber 15 For example, chloroprene rubber is used as the material, and the rubber hardness is preferably around 60°. A compression spring 16 is interposed between the bar frame 12 and the holding bar 14, and this compression The spring force of the spring 16 provides a pressure holding force for the film presser. Konoto A relief 21a is provided at the periphery of the guide hole 21 of the support bar frame 12, and the compression spring 16 is can be installed. The fit between the guide hole 21 and the slide pin 13 is It is better to have some play, and if necessary, to improve wear resistance or improve slippage. A bush may also be attached. Upper presser behind slide pin 13 The base of the plate 17 is fixed by a fixing ring 18, and the film pusher on the lower side of the seal It is integrated with Sae. The upper holding plate 17 has an L-shaped angle shape and has a tip end contact. The contact surface 17a is folded into an R shape to prevent damage when the pack film 6 is sandwiched. It is formed by bending. Note that this film pressing means consists of a seal bar 9 and a pressing bar. -10 on both sides. The tip contact surface 17a of the upper pressing plate 17 and the film pressing The sealing rubber 15 needs to be at the same surface position, and when the seal is opened, the sealing surface 9 It is set to protrude several mm forward from the position of the holding surface 10a and the holding surface 10a. wife When the seal bar 9 and the presser bar 10 are crimped together, the tip contact surface 17a is The contact surfaces of the film presser rubber 15 and the film presser rubber 15 are pressed against each other. Figure 3 shows the sea It is a figure which shows the operating state of the film presser when the roll part is crimped|bonded. Lower part of the seal Now, sandwich the pack film 6 with the film presser rubber 15, and press the compression spring 16. It holds its own weight by the force of. Also, at the tip contact surface 17a of the upper holding plate 17, The pack film 6 above the seal part is sandwiched between the seal bar 9 and the presser bar 10. Make sure that the tension between the upper end of holder 1 and the upper end of holder 1 that occurs when closing is not applied directly to the sealing part. The pack film 6 is pressed down. Note that the tip contact surface 17a directly holds its own weight. Therefore, it may be made of a metal material. Seal bar 9 and presser bar 10 When the seal bar 9 and the holding bar 10 are separated, the tip contact surface 17a The film pressing rubber 15 is also separated, and the pack film 6 is released from being held.

[0009]

[Effect of the idea]

As described above, this invention works in conjunction with the crimping of the seal bar and presser bar to It is equipped with film pressing means that presses and supports the pack film on the upper and lower sides. When heat-sealing between the seal bar and the presser bar, the pack film The film can be held between the upper and lower parts of the sealing part using film pressing means, and the Even if the pack is full and heavy, the tension generated by its own weight will directly seal the seal. and will not be cut off from the sealing part due to tension. Therefore, stable heat sealing can be performed and seal strength quality can be ensured. be.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a heat sealing machine according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the main parts of the same as above.

FIG. 3 is a sectional view illustrating the operation same as above.

FIG. 4 is a schematic sectional view showing the entire pack device same as above.

[Explanation of symbols]

6 Pack film 9 Seal bar 10 Holding bar 15 Film presser rubber 17 Upper holding plate

Claims (1)

[Scope of utility model registration request] Claim 1: In a heat sealing machine for a pack device, which welds the pack film by sandwiching a tube-shaped pack film between a seal bar and a presser bar that can be freely moved close to each other and cuts the pack film, the seal bar A heat-sealing machine for a pack device, comprising a film pressing means that presses and supports a pack film above and below a sealing part in conjunction with the pressing of a pressing bar.