JPH0413120Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Prior Art) The present invention relates to a log cutting machine for cutting a long log made by winding a wide web (for example, a web for toilet paper) into product dimensions. relates to a trim removal device for removing log end pieces (trim) cut by a log cutting machine from a product group.

(Prior Art) FIGS. 7 and 8 show a conventionally used toilet paper log cutting machine Z and a trim removing device Y' connected to an outlet Za of the log cutting machine. has been done.

The log cutting machine Z shown in FIGS. 7 and 8 has a disc blade 22 that rotates while revolving around a base shaft 21.
The cutter device 2 has a log presser 16 fixed to an endless chain 13 wound between a pair of front and rear sprockets 11 and 12 below the cutter device 2, and is synchronized with the revolution period of the disc blade 22 of the cutter device 2. It is constructed by arranging log feeding devices 1 (two rows on the left and right) that advance the log presser 16 by the product size, and the cutter device 2 and the log feeding device 1 can be operated simultaneously. As a result, the long logs P that are sequentially and intermittently transferred by the log presser 16 can be cut into product dimensions by the disc cutter 22. Note that both the tip and rear end surfaces of the long log P are uneven, and in order to remove the uneven portions and to position the long log P to accurately cut each product size, a disk cutter is used. 22, the leading end Pa and the trailing end Pb of the long log P are each cut to an appropriate length (for example, 1 to 3 cm) shorter than the product dimensions.
The length of the trim (Ra, Rb) is removed. The product logs Q, Q... and the trims Ra, Rb that have been sequentially cut in this way are sequentially sent out from the outlet Za (terminal end of the log feeding device 1) of the log cutting machine Z in a straight line. It can be done. A mixed product containing product logs Q, Q, ... and trims Ra, Rb sent out from the outlet Za of the log cutting machine Z is sequentially supplied onto the trim removing device Y'. In the log cutting machine shown in FIG. 7, reference numeral 14 denotes an indexing machine 15 for intermittently operating the log feeding device 1 according to the product size.
indicates the motor.

Conventional trim removal device shown in Figures 7 and 8
Y' is provided for each log feeding device 1, 1, and each trim removing device Y', Y' removes the mixed article sent from each log feeding device 1, 1 to the downstream process (packaging process) side. Transfer line 10 for transferring to
1 is used for both purposes. This transfer line 1
01 is the upstream transfer line 111 in the transfer direction
and the downstream transfer line 121 are configured to be continuous. Each of the upstream and downstream transfer lines 11 and 121 has one guide having a length extending over the entire length of the linear endless belt 112 and 122 at a position diagonally above the linear endless belt 112 and 122, respectively. It is constructed by installing bars 113 and 123 in parallel. The distance between the endless belts 112, 122 and the guide bars 113, 123 is slightly smaller than the diameter D and product length L of the product log Q and the lengths of the trims Ra and Rb, as shown in FIGS. 9 and 10. (e.g. 1-3 cm) (spacing T)
has been done. Note that the upstream transfer line 111 (9th
) and the downstream transfer line 121 connected thereto
(Fig. 10), each endless belt 11
2, 122 and the guide bars 113, 123 are arranged in left and right opposite positions. The upstream and downstream transfer lines 111 and 121 are connected to the vertical center line (W-W line in FIGS. 9 and 10) of the mixed article sent out from the terminal end of each of the log feeding devices 1 and 1.
Endless belts 112, 122 and guide bars 113, 123 are arranged so as to be distributed on both sides.

In this conventional trim removing device Y', the product log Q is sent out from the outlet Za of the log cutting machine.
When a mixed article containing trims Ra and Rb passes over the upstream transfer line 111 or the downstream transfer line 121, each product log Q, Q... in the mixed article is generated.
... has a diameter D and a length L of the endless belt 11
2, 122 and the guide bars 113, 123, the mixed articles are transferred to the subsequent process side (transfer conveyor 10 side) without falling downward, but the trims Ra, Rb in the mixed articles are 11
2, 122, the lower side of the trim (portion E in FIGS. 9 and 10) is sent downstream, while the side surface of the trim (portion F)
comes into contact with the guide bars 113, 123 and a frictional force is generated between them, so that the chain line Ra' (or Rb')
As shown, the trim is rotated in a horizontal plane and falls downward through the gap between the endless belts 112, 122 and the guide bars 113, 123 due to its own weight. In addition, in the upstream transfer line 111 and the downstream transfer line 121, the positional relationship between the endless belt and the guide bar is reversed, so that the endless belt does not fall for some reason while passing through the upstream transfer line 111. Trim Ra, Rb
Even if there is a drop, the trims Ra and Rb are provided with reverse rotational motion on the downstream side transfer line 121 side, so that the trims can easily fall.

However, with this conventional trim removal device Y',
Trimming is performed on each transfer line 111, 121 by the interaction between the running endless belt 112, 122 and the stationary guide bar 113, 123.
By rotating Ra and Rb, the trim is dropped downward through the gap between the endless belt and the guide bar.
There is no guarantee that the trim will be rotated reliably on the transfer lines 111, 121, and there is a possibility that the trim will not be rotated and will pass over each transfer line 111, 121 and be transferred as it is onto the conveyor 10 on the packaging machine side. It was left behind. Incidentally, if the trim is sent to the packaging process as it is without being removed, there is a problem that the trim may get stuck in the packaging process or the trim may be mixed with the product and packaged.

In addition, some of the known techniques include FIGS. 11 and 12.
As shown in the figure (Japanese Unexamined Patent Publication No. 59-175995), there is a transfer line for sequentially transferring the product logs Q, Q... cut by the cutter device and the mixed articles containing the trims Ra, Rb to the subsequent process side. Above 131,
Only the product logs Q, Q..., which are transferred on the transfer line 131 in translation at the same speed as the movement of the mixed article transferred on the transfer line 131, are supported, and the trims Ra, Rb are not supported. Trim removal devices are known that include a product log support device 132 that is allowed to fall. That is, this known trim removal device has a transfer line 131 consisting of a single linear endless belt 133, and a lower side of the transfer line 131.
The product logs Q, Q... are sequentially transferred to the endless chain 134, which is run in the same direction as the transfer direction of the endless belt, in accordance with the supply timing of each product log Q, Q... fed on the transfer line 131. 13
Multiple support members (protrusions) that can be supported between 3.
135, 135... and trim Ra,
At the timing position where Rb is supplied, a product log support device 132 provided with a support member missing portion 136 is provided, and the mounting position of each of the support members 135, 135... and the supply of product logs Q, Q... timing,
By driving the transfer line 131 and the product log support device 132 at a constant speed while synchronizing the support member non-installation position and the supply timing of the trims Ra and Rb, the trims Ra and Rb
is dropped without support, and the product log Q,
Only Q... can be transferred to the post-process (packaging process) transfer conveyor 137.

However, in the known trim removal apparatus shown in FIGS. 11 and 12, the product logs Q and Q supplied on the transfer line 131 are
A support member 135 for sequentially supporting only...
135... has to be run in circulation, the mechanism becomes complicated, and the structure of the trim removal device becomes large-scale, leading to high costs.

(Purpose of the invention) The present invention has been developed in view of the problems of the conventional trim removal devices shown in FIGS. 7 to 10 and the known trim removal devices shown in FIGS. 11 and 12. It is possible to reliably remove only the trim from a mixed product containing product logs and trim, and even if it is possible to reliably remove only the trim, its configuration can be simplified. The purpose of this invention is to propose a trim removal device that can perform the following steps.

(Means for achieving the object) The present invention trims a long log transported by a log feeding device to a length shorter than the product dimension from the leading end of the long log by a cutter device. After cutting, the remaining logs are connected to the outlet of a log cutting machine that sequentially cuts the remaining logs into product sizes from the tip, and the cutter device cuts the remaining logs from a mixed article containing product logs and trims. In a trim removal device for a log cutting machine for removing only trim, a transfer line is provided for transferring a mixture of product logs and trim cut by the cutter device to a subsequent process side, and the transfer line further includes: A part of a wide conveyor-like article support part that forms a part of the transfer line and supports the product logs in the mixed article from below and is capable of guiding the product logs to the post-processing side. An article transfer conveyor having a narrow trim removal section that cannot support the trim in the mixed article and causes the trim to fall out of the transfer line is provided, and the article transfer conveyor is The timing is set at the starting end of the article transferring conveyor within the range where each of the product logs in the mixed article containing product logs and trim transferred from the log cutting machine side is supplied to the starting end of the article transferring conveyor. The trim removal section is set to correspond to the starting end of the article transfer conveyor in a range where the article supporting section corresponds and the trim in the mixed article is supplied to the starting end of the article transfer conveyor. That is.

(Function) The trim removal device of the present invention has a trim removal section formed in a part of a wide conveyor-like article support section in the middle of a transfer line that transfers a mixed article containing product logs and trim to the subsequent process side. A transfer conveyor is provided, and the running timing of the article transfer conveyor is set such that the article support section corresponds to the range where the product log is supplied, and the trim removal section corresponds to the range where the trim is supplied. So,
An effect is obtained in which only the trim can be reliably removed from a mixed product containing product logs and trim that is sequentially supplied from the log cutting machine side.

(Embodiment) A preferred embodiment of the present invention will be described with reference to FIGS. 1 to 6. In this embodiment, the log cutting machine Z is used in the conventional example shown in FIGS. 7 and 8. The same log cutting machine is used,
The trim removing device Y according to the embodiment of the present invention is connected to the outlet of the log cutting machine Z. Therefore, regarding the structure and operation of the log cutting machine Z, the explanation of the conventional log cutting machine shown in FIGS. 7 and 8 will be referred to, and detailed explanation thereof will be omitted in the section of this embodiment.

In addition, with this log cutting machine Z, when cutting a long log P, in addition to the number of products to be cut, extra cuts are made for the trim cutting on the preceding side and one empty cut for each long log P. The action is about to take place. For example, in the case of a long log P with 14 products, the cutting operation is performed a total of 16 times for each long log.

The trim removal device Y removes the product log Q cut by the cutter device 2 from the post-process side (packaging process side).
It is provided in the middle of a transfer line 3 for transferring to.

The transfer lines 3 are arranged in two rows on the left and right in line with the log feeding devices 1, 1 (two rows) on the log cutting machine Z side.

Each of the transfer lines 3, 3 includes an upstream conveyor 31, 31 connected to the terminal end of each log feeding device 1, 1, and a downstream article connected to the terminal end of the upstream conveyor 31, 31. A transfer conveyor 4 is provided. This upstream conveyor 31, 3
1 and the article transfer conveyor 4 on the downstream side share the motor 15 that drives the log feeding device 1, and are caused to circulate at a constant speed. Further, the terminal end of the article transfer conveyor 4 on the downstream side is connected to a conveyor 10 that continues to the packaging machine side.

Each of the upstream conveyors 31, 31 is composed of one endless belt 32 and one guide bar 33 arranged in parallel diagonally above the endless belt 32. And this upstream conveyor 31,
31 is a product log Q and trims Ra, Rb supplied between the endless belt 32 and guide bar 33 of the upstream conveyor 31, 31 from the end of the log feeding device 1, 1.
The mixed articles can be sequentially transferred to the rear side by running the endless belt 32. It should be noted that in the upstream conveyors 31, 31, the trims Ra, Rb can be dropped from between the endless belt 32 and the guide bar 33 by the same action as the conventional trim removing device shown in FIGS. 7 to 10. It's getting old.

The article transfer speed of this upstream conveyor 31 is set to be considerably faster than the forward speed of the log feeding device 1 (approximately twice as high in this embodiment).

The article transfer conveyor 4 located on the downstream side of the transfer line 3 is made of a chain conveyor in this embodiment, and the mixed articles Q, Ra, and product logs and trims are sequentially supplied from the end of the upstream conveyor 31.
Trim Ra, Rb
A narrow trim removal section 42 is provided so that when the trims Ra and Rb are supplied, they cannot be supported and fall under their own weight. This article transfer conveyor 4 has two left and right chains 43, 43, as shown in FIGS. 3 to 6.
A large number of bar materials 44 are placed close to each other in between.
It is formed by constructing A and 44B. The bar material 44A forming the article support section 41 in the article transfer conveyor 4 is connected to the two upstream conveyors 31,
31, and has a length extending between each end of each upstream conveyor 31, 3 at the article support section 41.
It is possible to reliably support the left and right product logs Q sent out from each end of the log. In addition, the bar material 44A for forming the article support part 41
, there are upstream conveyors 31 on both sides at both ends thereof,
In order to stably support the product logs Q and Q sent out from the terminal end of 31, arcuate receiving parts 44Aa and 44 have approximately the same curvature as the outer peripheral surface of the product log Q.
Aa (see Figure 6) is formed. Furthermore, the bar material 44B forming the trim removal section 42 in the article transfer conveyor 4 is so short that it cannot support the trims Ra and Rb sent out from each end of the upstream conveyors 31 and 31, as shown in FIG. The trims Ra and Rb sent out from the ends of the upstream conveyors 31 and 31 can be reliably dropped from the trim removal section 42 to the outside of the article transfer conveyor 4. The length range T (fourth
(Figure) shows the two trims Ra and Rb, front and rear, sent by the upstream conveyor 31 (the rear end trim Rb cut from the long log on the leading side and the trim Rb cut from the long log on the trailing side). This is slightly larger than the spacing S (Fig. 3) between the tip side trims (Ra).

The total circumference length and running speed of the article transfer conveyor 4 are determined in accordance with the number of products cut per long log cut by the log cutting machine Z side and the feeding speed of the log feeding device 1. In this example,
The log cutting machine Z is set to circulate exactly once in synchronization with the cutting time required for one long log. Furthermore, the running timing of the article transfer conveyor 4, that is, the timing at which the article support section 41 and the trim removal section 42 pass the starting end 4a of the article transfer device 4, is such that product logs and trim are mixed from the terminal ends of the upstream conveyors 31, 31. Mixed article Q, Ra,
As shown in FIG. 4, in the range where the product logs Q, Q, etc. in Rb are sent out, a wide article support part 41 corresponds to the starting end 4a of the article transfer conveyor 4, and the mixed articles Q, Ra , Rb, the narrow trim removal section 42 is set so as to correspond to the starting end 4a of the article transfer conveyor 4 in the range where the front and rear two trims Ra and Rb are sent out.

The illustrated trim removal device Y operates as follows.

A mixture of product logs Q, Q... and trims Ra and Rb, which have been cut sequentially by the cutter device 2, is sequentially transferred from the log feed device 1 side onto the upstream conveyor 31 of the transfer line 3, and is placed on the upstream side. It is sent later on the conveyor 31. When the products are sent from the terminal end of the upstream conveyor 31 to the downstream article transfer conveyor 4, the wide article support portion 41 corresponds to the starting end 4a of the article transfer conveyor 4. The logs Q, Q... are now transferred onto the article transfer conveyor 4 and transported later, and the two before and after among the mixed articles Q, Ra, Rb.
When the two trims Ra and Rb are sent from the end of the upstream conveyor 31 to the downstream article transfer conveyor 4, the narrow trim removal section 42 corresponds to the starting end 4a of the article transfer conveyor 4. As a result, the two trims Ra and Rb are not supported by the article transfer conveyor 4 and fall from the trim removal section 42. In this way, once the running timing of the article transfer conveyor 4 is set, the article transfer conveyor 4 will continuously circulate in synchronization with the log cutting action on the log cutting machine Z side, and the product log Only trim can be automatically and reliably removed from a mixed article containing trim and trim. The product logs Q, Q... transferred onto the article transfer conveyor 4 are transferred to the conveyor 1 that continues from the end of the article transfer conveyor 4 to the packaging machine side.
It is transferred to the starting end side of 0 and further sent later.

(Effects of the invention) The trim removal device for a log cutting machine of the invention has the following effects.

(1) Product log Q cut by two parts of the cutter device
In the middle of the transfer line 3 for transferring the mixed article containing trims Ra and Rb to the subsequent process side (packaging process side), there is provided an article support section 41 shaped like a wide conveyor that can support and transport the product log Q. A narrow trim removal section 4 has a part that allows the trims Ra and Rb in the mixed article to fall out of the transfer line 3.
2, an article transfer conveyor 4 is provided,
In addition, the running timing of the article transfer conveyor 4 is adjusted so that the trims Ra, Rb in the mixed article containing the product logs and trims transferred from the log cutting machine side are adjusted.
Since the setting is such that only the trim can be removed from the transfer line 3, only the trim can be automatically and reliably removed from the mixed article containing the product log Q and the trims Ra and Rb.

(2) Since the trim removal device is also a part of the transfer line 3, even if the trim removal device is designed to automatically and reliably remove the trim as described above, the trim removal device shown in FIGS. The structure is simpler than the conventional one (Japanese Unexamined Patent Publication No. 59-175995) shown in FIG.

[Brief explanation of drawings]

Fig. 1 is a side view of a log cutting machine with a trim removing device according to an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is a perspective view of the trim removing device portion in Fig. 1; Figure 4 is the state change diagram of Figure 3, and Figure 5
The figure is a view taken from the - arrow in Fig. 3, Fig. 6 is a view taken from the - arrow in Fig. 4, Fig. 7 is a side view of a conventional log cutting machine with a trim removal device, and Fig. 8 is a plan view of Fig. 7. figure,
9 and 10 are respectively sectional views at - and - of FIG. 8, FIG. 11 is a side view of a known trim removal device, and FIG. 12 is a sectional view taken along line XII--XII of FIG. 11. 1...Log feeding device, 2...Cutter device, 3
...transfer line, 4...goods transfer conveyor, 4a
... Starting end part, 41 ... Article support part, 42 ... Trim removal part, P ... Long log, Q ... Product log,
Ra, Rb...trim.

Claims (1)

[Scope of utility model registration request] Long log P transported by log feeding device 1
is trimmed by the cutter device 2 from the leading end Pa of the long log P to a length shorter than the product dimension L.
The cutter device 2 is connected to the outlet of a log cutting machine Z that sequentially cuts the remaining logs by the product size L from the tip after cutting off Ra.
The product logs Q, Q... and trims Ra, Rb are mixed together.
This is a trim removal device for a log cutting machine for removing only Ra, Rb, and the product logs Q, Q... cut by the cutter device 2 and the trim Ra,
A transfer line 3 is provided to transfer the Rb-containing mixed product to the post-process side, and a product log forming part of the transfer line 3 and containing the mixed products Q, Ra, and Rb is provided in the middle of the transfer line 3. A part of the wide conveyor-like article support section 41 that supports the product log Q from below and can guide the product log Q to the post-process side is provided with trims Ra,
An article transfer conveyor 4 is provided which has a narrow trim removal section 42 that allows the trims Ra and Rb to fall outside the transfer line 3 without being able to support Rb, and the article transfer conveyor 4 is The timing is set to the mixed product Q containing the product log and trim transferred from the log cutting machine Z side,
In the range where the product logs Q, Q, etc. in Ra, Rb are supplied to the starting end 4a of the article transferring conveyor 4, the article supporting section 41 corresponds to the starting end 4a of the article transferring conveyor, and the mixing Goods Q, Ra,
Trim Ra, Rb in Rb is the article transfer conveyor 4
The trim removing device for a log cutting machine is characterized in that the trim removing section 42 is set so as to correspond to the starting end 4a of the article transfer conveyor in the range supplied to the starting end 4a of the article transfer conveyor.