JP2005324385A - Book cooling device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a book cooling device, which surely solidifies adhesive before the trimming of the three sides of a book after the coating of the hot-melt type adhesive to the back portion of the content of the book. <P>SOLUTION: This book cooling device is equipped with a cooling plate, to the side contacting with the book of which a material with higher thermal diffusivity is applied and to the side not contacting with the book of which a material with lower thermal diffisivity is applied and within which a cooling medium is held, a cooling means for cooling the cooling plate by cooling the cooling medium and a blowing means for sending air (the cooling medium) through holes bored on the cooling plate to the side contacting with the book so as to provide the cooling plate in a perfect binding bookbinding line in order to cool the back side of the book, which is fabricated by wrapping the content coated with the hot-melt type adhesive with a cover and to use the cooling plate as the guide of the back side of the book in the conveying course of the book wrapped with the cover. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to the technical field of wireless binding. In particular, the present invention relates to the present cooling apparatus and method for solidifying the adhesive surely after the hot melt type adhesive is applied to the back portion of the contents and then the adhesive is forcibly cooled to perform three-way cutting.

  At present, in order to prevent the hot melt type adhesive from adhering to the cutting blade, a method of spraying a spray mainly composed of silicon grease and oil as an adhesion preventing agent is performed on the cutting blade. Although the adhesion of the hot melt type adhesive is reduced by the spraying of the anti-adhesive agent, the burden of frequent spraying work and the expense of spraying are increased. In addition, paper dust is mixed with the anti-adhesive agent of the cutting blade and transferred to and adhered to the book, causing the book to become dirty, which causes defective products.

  It is clear that when the hot melt type adhesive is not cooled and solidified, it easily adheres to the cutting blade. Therefore, after applying a hot melt type adhesive to the back part of the contents and wrapping the cover, there is a proposal to lengthen the time until the conveyance by the conveyor is divided into three rows and cut in three directions (Patent Document 1). . In addition, there is a proposal that automatically sets the conveyor speed after wrapping the cover according to the conditions of the book and secures the time for natural cooling (Patent Document 2). However, in these two methods, the control and operation of the conveyor are complicated, and the speed of the conveyor may have to be extremely slowed down.

There is also a proposal for providing a step on the non-polished surface of the cutting blade to prevent the adhesive from adhering to the cutting blade (Patent Document 3). However, even with this specially shaped cutting blade, the adhesive often adheres to the polished surface when actually used, and this is not a fundamental solution.
JP-A-11-99768 JP-A-11-99769

  An object of the present invention is to provide a cooling device and method for reliably solidifying an adhesive after applying a hot melt type adhesive on the back portion of the contents and before performing three-way cutting. is there.

The cooling device according to claim 1 of the present invention includes a cooling plate for cooling a book binding line and a cooling plate for cooling the back side of a book with a cover wrapped around the contents coated with a hot-melt adhesive. A cooling means for cooling the plate is provided.
The cooling device according to claim 2 of the present invention is the cooling device according to claim 1, wherein the cooling plate has a refrigerant therein, and the cooling means cools the refrigerant. The cooling plate is a cooling means for cooling the cooling plate.
The cooling device according to claim 3 of the present invention is the cooling device according to claim 1 or 2, wherein the cooling plate has a hole, and air is sent to a side where the book contacts through the hole. Means are provided.
According to a fourth aspect of the present invention, there is provided the cooling device according to the third aspect, wherein the air is the refrigerant.
Further, the present cooling device according to claim 5 of the present invention is the cooling device according to any one of claims 1 to 4, wherein the cooling plate uses a material having a high thermal diffusivity on the side where the book contacts, A material having a low thermal diffusivity is used on the non-contact side.
Further, the present cooling method according to claim 6 of the present invention is a wireless binding that applies a hot melt type adhesive to the back portion of the contents that have been collated and combined into a single volume, wraps the cover, and performs three-way cutting. In the bookbinding line, a cooling plate is used as a guide on the back side of the book wrapped with the cover in the conveyance path from the time when the cover is wrapped until the three-way cutting is performed.

According to the cooling device of the first aspect of the present invention, the cooling plate cooled by the cooling means is wireless so as to cool the back side of the book in which the cover is wrapped around the contents coated with the hot melt type adhesive. It can be provided in a binding line. That is, the back side of the book to which the adhesive is applied is forcibly cooled. Therefore, the present cooling device is provided for reliably solidifying the adhesive after applying the hot melt type adhesive on the back portion of the contents and before performing the three-way cutting.
According to the cooling device of the second aspect of the present invention, since the cooling plate is cooled by the refrigerant, a high cooling capacity can be obtained.
According to the cooling device of the third aspect of the present invention, since the cooled air is sent to the side where the book contacts through the holes of the cooling plate by the air blowing means, the book portion is separated from the cooling plate. Can also perform efficient cooling.
The present cooling device according to claim 4 of the present invention has a simple device configuration because the refrigerant is air.
Further, according to the cooling device of the fifth aspect of the present invention, since an appropriate material considering the thermal diffusivity is used on the front and back sides of the cooling plate, efficient cooling can be performed.
According to the present cooling method of the sixth aspect of the present invention, the cooling plate is provided in the wireless binding line so as to cool the back side of the book whose cover is wrapped in the contents coated with the hot melt type adhesive. It is done. That is, the back side of the book to which the adhesive is applied is forcibly cooled. Therefore, the present cooling method is provided for reliably solidifying the adhesive after applying the hot melt type adhesive to the back portion of the contents and before performing the three-way cutting.

  An embodiment of the cooling device of the present invention will be described. FIG. 1 (side view) and FIG. 2 (perspective view) show an explanatory diagram when the cooling device of the present invention is provided in the wireless binding line. 1 and 2 mainly show a cooling plate portion in the cooling device of the present invention. 1 and 2, 100 is a cooling plate, 101 is a front side plate, 102 is a back side plate, 103 is a packing, 104 is a refrigerant chamber, 105a, 105b and 105c are piping, 106a, 106b and 106c are suction ports, 107a, 107b is an outlet, 300 is a conveyor, 400, 400a, 400b, 400c, and 400d are books, and 401b, 401c, and 401d are hot-melt adhesives.

As shown in FIG. 1 and FIG. 2, the cooling plate 100 in the cooling device of the present invention has a configuration in which a front side plate 101 and a back side plate 102 are overlapped via a packing 103. The packing is a flexible fluid leakage stopper used on the surface that causes the sliding motion. A refrigerant chamber 104 is formed between the superposed front plate 101 and back plate 102.
After the cooling plate 100 has been wrapped around the cover in a wireless binding line where a hot melt type adhesive is applied to the back part of the contents that have been collated and combined into a single volume, the cover is wrapped, and three-way cutting is performed. It is used as a guide for the back side of a book wrapped with a cover in the transport path from the cutting to the three-way cutting.

The front side plate 101 is a plate on the side of the cooling plate 100 on which the books 400a to 400d are in contact. A material having a high thermal diffusivity is used for the front side plate 101. By doing so, the radiant heat etc. of this 400a-400d can be absorbed efficiently.
The back side plate 102 is a plate on the side of the cooling plate 100 where the book does not contact. A material with a low thermal diffusivity is used for the back plate 102. By doing so, unnecessary ambient radiant heat or the like is absorbed and efficiency is not lowered.
The thermal diffusivity is a physical property value indicating the speed of temperature conversion of the heat transfer medium. That is, the value obtained by dividing the thermal conductivity by the product of density and specific heat.

  The pipes 105a, 105b, and 105c are pipes that supply a refrigerant. The refrigerant is generally a fluid material such as liquid or gas, but in the example shown in FIGS. 1 and 2, air is used as the refrigerant. One end of each of the pipes 105a, 105b, and 105c is connected to the suction ports 106a, 106b, and 106c, and the other end is connected to a cooling means (not shown) that is a source of pressurized and cooled air.

The suction ports 106a, 106b, and 106c are provided on the back plate 102, and serve as suction ports for sucking refrigerant into the refrigerant chamber 104 from the pipes 105a, 105b, and 105c. The refrigerant sucked into the refrigerant chamber 104 cools the cooling plate 100.
FIG. 4 shows an example of suction ports 106a, 106b, 106c,... Formed in the back plate 102. As shown in FIG. The suction ports 106a, 106b, 106c,... Are distributed at predetermined intervals on the front side plate 101. The suction ports 106a, 106b, 106c,... Are arranged so as not to overlap the air outlets 107a, 107b,. For this reason, the flow of the refrigerant in the refrigerant chamber 104 becomes complicated and a turbulent flow is generated to increase the cooling efficiency of the cooling plate 100.

The air outlets 107a and 107b are provided on the front plate 101 and serve as air outlets for blowing out the refrigerant accumulated in the refrigerant chamber 104, that is, pressurized and cooled air. The front side plate 101 faces the back side of the books 400 a to 400 d in the transport path of the books 400 a to 400 d by the conveyor 300. Therefore, the air blown out from the outlets 107a and 107b is further cooled by expansion, hits the back surface of the books 400a to 400d, and cools the books 400a to 400d.
FIG. 3 shows an example of the air outlets 107a, 107b,... Formed in the front side plate 101. As shown in FIG. The air outlets 107 a, 107 b,... Are distributed at predetermined intervals on the front side plate 101. The air outlets 107a, 107b,... Are arranged so as not to overlap the inlets 106a, 106b, 106c,. For this reason, the flow of the refrigerant in the refrigerant chamber 104 becomes complicated and a turbulent flow is generated to increase the cooling efficiency of the cooling plate 100.

  The conveyor 300 is a conveyor that conveys the books 400a to 400d, whose covers are wrapped inside, to the three-side cutting process in the wireless binding line. Since hot melt type adhesives 401b, 401c, 401d are applied to the back portion of the contents, the temperature is high. The temperature at which the hot melt adhesives 401b, 401c, and 401d are applied is about 200 degrees (° C.). The back sides of the books 400a to 400d, whose covers are wrapped inside, are conveyed lightly in contact with or close to the guides of the conveyance paths. If the cooling plate 100 is used for the guide, the heat | fever of the back part in the books 400a-400d used as high temperature is absorbed.

FIG. 5 (top view) shows an example of a conveyance path in which the above-described cooling plate is arranged. In FIG. 5, 100 is a cooling plate, 105 is piping, 300a and 300b are conveyors, 301 is a guide, and 410a to 410g are stacked books.
The conveyors 300a and 300b are connected and provided between the case process and the three-way cutting process. The wrapping process is a process in which a cover is wrapped (wrapped) with a binder (wrapping machine) to make it integral, and hot melt type adhesives 401b, 401c, 401d are applied to the back of the contents. Yes. The three-way cutting process is a process of cutting three sides excluding the top, the ground, and the forehead of the book, that is, the back.

The conveyor 300b is arranged so that the direction of the guide surface of the guide 301 coincides with the traveling direction of the conveyor belt. Therefore, the back sides of the stacked books 410a to 410g placed on the conveyor belt of the conveyor 300b are conveyed lightly in contact with or close to the guide 301.
On the other hand, the conveyor 300a is arranged such that the direction of the cooling surface of the cooling plate 100 serving as a guide and the running direction of the conveyor belt are at a predetermined angle. Therefore, the back sides of the stacked books 410a to 410g placed on the conveyor belt of the conveyor 300a are conveyed in close contact or light contact with the cooling plate 100. The strength of the contact increases as the angle formed by the direction of the cooling surface and the running direction of the conveyor belt increases.

  The cooling efficiency in the cooling plate 100 differs depending on whether it is in close contact, light contact, or close proximity. If the other conditions are the same, the heat conduction due to the contact depends on the contact area, so the cooling efficiency is in the order of (contact)> (lightly contact)> (proximity). However, the cooling by the cooling plate 100 plays a large role not only in heat conduction by contact but also in absorption of radiant heat and cooling air blown out from the outlet. Therefore, sufficient effects cannot be obtained unless they are brought into close contact as shown in FIG.

An example of the operation of the cooling device of the present invention having the above configuration will be described.
First, in step S1 (natural cooling), the stacked books discharged from the binder are conveyed on the conveyor 300b while changing the position in order from the stacked books 410g shown in FIG. 5 to the stacked books 410f and the stacked books 410e. Go. In this conveyance process, the part heated by the hot melt type adhesive in the stacked books is naturally cooled.

  Next, in step S2 (forced cooling), the stacked books are conveyed and transferred from the conveyor 300b to the conveyor 300a at the position of the stacked books 410d shown in FIG. In the conveyor 300a, the stacked book 410c shown in FIG. 5 is transported from the stacked book 410b to the stacked book 410a in the order changed. As described above, the conveyor 300a has its conveyor belt running in the direction of the cooling plate 100. Accordingly, the stacked books that are placed on and transported to the cooling plate 100 go toward the cooling plate 100 and come into close contact with each other. In this transport process, the portion of the stacked book that is heated by the hot melt adhesive is forcibly cooled.

Next, another embodiment of the cooling device and the cooling method of the present invention will be described. FIG. 6 shows an example of the cooling device of the present invention that uses a liquid instead of the gas described above as the refrigerant. In FIG. 6, 110 is a cooling plate, 111 is a groove, 112 is a partition, 113 is a temperature sensor, 114 is a supply pipe, 115 is a recovery pipe, and 120 is a cooling means.
The cooling plate 110 has a configuration similar to the cooling plate 100 shown in FIGS. Although not clearly shown in FIG. 6, it has a front plate and a back plate, and a groove 111 corresponding to the refrigerant chamber 104 is formed inside thereof. The groove 111 is formed as a region partitioned by the partition 112.

  The groove 111 is a groove through which a cooled fluid such as a coolant such as cooling water flows. And the groove | channel 111 has prescribed | regulated how the refrigerant | coolant flows in the cooling plate 110 so that the cooling plate 110 may perform a cooling function efficiently. In FIG. 6, the refrigerant supplied from the upper left of the cooling plate 110 descends and reaches the lower side, makes a U-turn and moves the groove one way to the right, rises and reaches the upper side, and makes a U-turn and moves the groove to the right by one path. , Descend to reach the lower side, make a U-turn, move the groove one path to the right, rise, reach the upper side, and so on, are repeatedly discharged from the upper right of the cooling plate 110.

The refrigerant is supplied from the cooling means 120 to the cooling plate 110 through the supply pipe 114. In addition, the refrigerant supplied to the cooling plate 110 flows through the groove 111 and is discharged as described above. In addition, the refrigerant discharged from the cooling plate 110 is recovered by the cooling means 120 through the recovery pipe 115.
The cooling means 120 includes, for example, a cooling tank that stores the refrigerant and cools the refrigerant, a pump that supplies and recovers the refrigerant in the cooling tank through the supply pipe 114 and the recovery pipe 115, and a controller that controls the flow rate and temperature of the refrigerant. And have.

The temperature sensor 113 detects the temperature of the surface of the cooling plate 110 and outputs it to the controller. It is preferable to provide not only the temperature sensor 113 but also a temperature / humidity sensor that detects the temperature and humidity of the atmosphere around the cooling plate 110.
The controller controls the flow rate and temperature of the refrigerant so that the temperature of the cooling plate 110 falls within a predetermined range according to the temperature detected by the temperature sensor 113. In addition, the controller changes and optimizes the target temperature of the cooling plate 110 within a predetermined range so that the cooling plate 110 does not condense depending on the temperature and humidity of the atmosphere detected by the temperature and humidity sensor, or other devices such as a dehumidifier Control to operate in combination with.

It is explanatory drawing (side view) when this cooling device of this invention is provided in the perfect binding bookbinding line. It is explanatory drawing (perspective view) when this cooling device of this invention is provided in the perfect binding bookbinding line. It is a figure which shows an example of the blower outlet formed in the front side plate. It is a figure which shows an example of the suction inlet formed in the back side plate. It is a figure which shows an example of the conveyance path | route which has arrange | positioned the cooling plate. It is a figure which shows an example of the cooling device of this invention which uses the liquid as a refrigerant | coolant.

Explanation of symbols

100 Cooling plate 101 Front side plate 102 Back side plate 103 Packing 104 Refrigerant chamber 105, 105a, 105b, 105c Piping 106a, 106b, 106c Suction port 107a, 107b Air outlet 111 Groove 112 Bulkhead 113 Temperature sensor 114 Supply piping 115 Recovery piping 120 Cooling means 300, 300a, 300b Conveyor 301 Guide 400, 400a, 400b, 400c, 400d Book 410a, 410b, 410c, 410d, 410e, 410f, 410g Stacked book 401b, 401c, 401d Hot melt type adhesive

Claims (6)

  It comprises a cooling plate for providing in a perfect binding line so as to cool the back side of a book whose cover is wrapped in the contents coated with a hot melt type adhesive, and a cooling means for cooling the cooling plate. This cooling device.   2. The cooling device according to claim 1, wherein the cooling plate has a refrigerant therein, and the cooling means is a cooling means for cooling the cooling plate by cooling the refrigerant. This cooling device.   3. The main cooling device according to claim 1, wherein the cooling plate has a hole, and has a blowing means for sending air to a side in which the book contacts through the hole.   4. The main cooling device according to claim 3, wherein the air is the refrigerant.   5. The cooling device according to claim 1, wherein the cooling plate uses a material having a high thermal diffusivity on the side where the book contacts, and uses a material having a low thermal diffusivity on the side where the book does not contact. The present cooling device. Apply the hot melt type adhesive to the back part of the contents that have been collated and gathered together, wrap the cover, and cut the three-sided trimming after the cover is wrapped in the three-sided trimming line A cooling method, wherein a cooling plate is used as a guide on the back side of the book wrapped with the cover in the conveyance path until the operation is performed.

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