Coiling device for raw material sheet

Abstract

The crimping sheet (10a) has a lower surface opposite to the conveyance belt (2b), and the lower surface includes a first portion (11) having a relatively large gripping force for the raw material sheet (D) and a second portion (12) having a relatively small gripping force for the raw material sheet (D). The lower surface of the crimping sheet (10a) is composed of the first portion (11) in a region (10e) on the upstream side of the start of crimping of the raw material sheet (D), and in a region (10f) on the downstream side of the end of crimping of the raw material sheet (D), the center in the width direction (B) is composed of the first portion (11), and both sides in the width direction (B) are composed of the second portion (12).

Description

Technical Field

[0001] This invention relates to an apparatus for rolling flat food ingredient sheets. Background Technology

[0002] A curling device is known that uses a curling sheet to curl a generally triangular and flat raw material sheet conveyed by a lower conveyor (e.g., Patent Document 1). The raw material sheet is a food raw material sheet, such as a raw material sheet for breads like croissants and butter rolls.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: U.S. Patent Application Publication No. 2010 / 0247729 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] The ends of the raw material sheets that emerge from the coiled sheet using a coiling device sometimes have rough surfaces due to friction. If the surfaces are rough, it can sometimes reduce the quality of the final product.

[0008] Therefore, the object of the present invention is to provide a curling device that can reduce the surface roughness of the raw material sheet at both ends of the raw material sheet emerging from the curling sheet.

[0009] Solution for solving the problem

[0010] To achieve the above objectives, the curling apparatus of the present invention is a curling apparatus for curling flat raw material sheets, wherein the curling apparatus comprises: a lower conveyor having a conveyor belt for conveying the raw material sheets; and a curling sheet unit disposed on the conveyor belt, the curling sheet unit comprising a curling sheet for curling the raw material sheets, the curling sheet having a lower surface opposite to the conveyor belt, the lower surface comprising a first portion having a relatively large gripping force on the raw material sheets and a second portion having a relatively small gripping force on the raw material sheets, the lower surface of the curling sheet being formed by the first portion in the upstream region where the curling of the raw material sheets begins, and the center in the width direction being formed by the first portion in the downstream region where the curling of the raw material sheets ends, and both sides in the width direction being formed by the second portion.

[0011] In the above embodiments, it is preferred that the first part is an uneven surface and the second part is a smooth surface.

[0012] Furthermore, in the above embodiments, it is preferable that the curling sheet unit has a resistance portion in the upstream region that promotes the curling of the raw material sheet. The resistance portion may include a sheet that is independent of the curling sheet or a rod-shaped portion that is integrated with the curling sheet.

[0013] Furthermore, in the above embodiments, it is preferred that the coiled sheet has a notch or hole through which the sprayed liquid passes.

[0014] Furthermore, in the above embodiments, it is preferred that the curling device also has a counterweight disposed on the curling sheet and on both sides in the width direction. Attached Figure Description

[0015] Figure 1 This is a schematic front view of the curling device of the present invention.

[0016] Figure 2 yes Figure 1 A schematic top view of the coiling device.

[0017] Figure 3 yes Figure 1 A schematic cross-sectional view of the coiling device.

[0018] Figure 4 This is a schematic side view of the wound raw material sheet.

[0019] Figure 5 This is a partially enlarged front view of the first embodiment of the coiled wafer unit.

[0020] Figure 6 It means Figure 5 A diagram of the lower surface of the long strip of the curled sheet unit.

[0021] Figure 7 It is a magnified 3D view of the lower surface of the long film.

[0022] Figure 8 It means Figure 5 A diagram of the lower surface of a short piece of a curled wafer unit.

[0023] Figure 9 yes Figure 8 A side view of the short film.

[0024] Figure 10 It means Figure 5 A diagram of the lower surfaces of the long and short slices of the curled slice unit.

[0025] Figure 11 This is a partially enlarged front view of the second embodiment of the curling wafer unit.

[0026] Figure 12 It means Figure 11 A diagram of the lower surface of the long strip of the curled sheet unit.

[0027] Figure 13 It means Figure 11 A diagram of the lower surface of a short piece of a curled wafer unit.

[0028] Figure 14 yes Figure 13 A side view of the short film.

[0029] Figure 15 This is a partially enlarged front view of the third embodiment of the curling wafer unit.

[0030] Figure 16 It means Figure 15 A diagram of the lower surface of the long strip of the curled sheet unit.

[0031] Figure 17 yes Figure 16 A side view of a long film. Detailed Implementation

[0032] Reference Figures 1-4 An embodiment of the curling device of the present invention is described.

[0033] The curling device 1 includes a lower conveyor 2 that conveys raw material sheet D along the conveying direction A, a pressure roller device 3, a curling unit 4, a spraying device 5, and a curling position adjustment device 6.

[0034] The raw material sheet D is a flat, roughly triangular shape, with its base aligned with the width direction B, which is perpendicular to the conveying direction A.

[0035] The lower conveyor 2 includes a first conveyor belt 2a, a second conveyor belt 2b adjacent to and disposed downstream of the first conveyor belt 2a, and a third conveyor belt 2c adjacent to and disposed downstream of the second conveyor belt 2b. Preferably, each of the conveyor belts 2a, 2b, and 2c is configured to minimize movement of the conveyed raw material sheet D on the surface of the conveyor belt. Preferably, the speed of the second conveyor belt 2b is faster than the speeds of the first conveyor belt 2a and the third conveyor belt 2c.

[0036] The pressure roller device 3 is disposed on the first conveyor belt 2a. The pressure roller device 3 includes: a pressure roller 3a disposed above the downstream end of the first conveyor belt 2a; a drive mechanism 3b (e.g., including a cylinder) that moves the pressure roller 3a up and down; and a sensor 3c that detects the raw material sheet D. Preferably, the pressure roller 3a is configured to rotate using a separate motor. Preferably, the pressure roller device 3 is configured such that, after the raw material sheet D is detected by the sensor 3c, the pressure roller 3a is lowered when the raw material sheet D reaches the position of the pressure roller 3a, based on the travel distance of the first conveyor belt 2a.

[0037] The crimping unit 4 is disposed on the second conveyor belt 2b. The crimping unit 4 includes a frame 4a, an upstream spanner 4b, a downstream spanner 4c, a crimping sheet unit 10, and a counterweight 20. The crimping sheet unit 10 hangs down from the upstream spanner 4b. The structure of the crimping sheet unit 10 will be described in detail later. The counterweight 20 hangs down from both the upstream spanner 4b and the downstream spanner 4c.

[0038] The spraying device 5 is disposed on the second conveyor belt 2b. The spraying device 5 has a nozzle 5a and a sensor 5b. Preferably, the spraying device 5 is configured such that, after detecting the raw material sheet D using the sensor 5b, it sprays the raw material sheet D at the hole 10ca (see reference 10ca) of the curling unit 10 based on the travel distance of the second conveyor belt 2b. Figure 10 Spraying is performed using nozzle 5a.

[0039] The curling position adjustment device 6 is disposed on the third conveyor belt 2c. The curling position adjustment device 6 has a frame 6a, a support portion 6b supported on the frame 6a and extending along the conveying direction A from the center in the width direction B, and a pressing portion 6c hanging down from both ends of the support portion 6b.

[0040] like Figure 5 As shown, the coiled sheet unit 10 has a support portion 22 of the span 4b mounted on the upstream side and a sheet hanging down from the support portion 22 and extending along the conveyor belt 2b in the conveying direction A. In this embodiment, the sheet is composed of a long sheet 10a and a short sheet 10b.

[0041] like Figure 6 As shown, the long strip 10a is rectangular, having a width wider than the raw material sheet D and a length sufficient to be rolled up. To conform to the shape of the rolled-up raw material sheet D, it is preferable that the long strip 10a is flexible in both the conveying direction A and the width direction B. The long strip 10a is, for example, made of the same material as the conveyor belt 2b, namely polyester.

[0042] The long sheet 10a has an upstream region 10e including the portion where the rolling of the raw material sheet D begins and a downstream region 10f including the portion where the rolling of the raw material sheet D ends. Furthermore, the upstream region 10e has a notch 10c extending in the conveying direction at its center in the width direction B.

[0043] The lower surface 10d of the long sheet 10a includes a first portion 11 with greater gripping force for curling the raw material sheet D and a second portion 12 with less gripping force. For example, the first portion 11 is an uneven surface, and the second portion 12 is a smooth surface (see reference). Figure 7 The upper surface of the long piece 10a is an arbitrary surface.

[0044] The long strip 10a is made, for example, from a commercially available strip material. This strip material has raised and recessed surfaces across its entire surface. Specifically, it is primarily provided with cylindrical protrusions (see reference). Figure 6 Therefore, it is preferable to form the second part 12 by removing the protrusion corresponding to the second part 12. As a result, the thickness of the second part 12 of the long sheet 10a is thinner than the thickness of the first part 11.

[0045] On the lower surface 10d of the coiled sheet 10a, the upstream region 10e, where the coiling of the raw material sheet D begins, is formed by a first portion 11 along the entire width direction B. The central part of the downstream region 10f, where the coiling of the raw material sheet D ends, is formed by the first portion 11, and the two sides along the width direction B are formed by second portions 12. In the region between the upstream region 10e and the downstream region 10f, the first portion 11 narrows towards the downstream side of the conveying direction A, that is, the second portion 12 widens towards the downstream side of the conveying direction A.

[0046] like Figures 8-10 As shown, the short piece 10b is rectangular and has the same width as the long piece 10a. The short piece 10b is configured in the upstream region 10e such that it forms a hole 10ca above the long piece 10a and between it and the notch 10c. For example, the short piece 10b is formed of the same material as the long piece 10a (e.g., polyester), and its lower surface has the same uneven surface as the first part 11. Furthermore, preferably, a plurality of rod-shaped portions 10g extending in the conveying direction are mounted on the upper surface of the short piece 10b. The rod-shaped portions 10g are formed, for example, of polyester. The short piece 10b and the rod-shaped portions 10g constitute a resistance portion for forming the core of the raw material sheet D.

[0047] like Figure 3 and Figure 4 As shown, the counterweight 20 is, for example, a stainless steel chain, disposed on the coil plate 10a and on both sides in the width direction B.

[0048] Next, the operation of the curling device of the present invention will be explained.

[0049] like Figure 2 As shown, a roughly triangular raw material sheet D, with its base edge aligned with the width direction B, is conveyed by the first conveyor belt 2a. The raw material sheet D is detected by the sensor 3a of the pressure roller device 3, and the pressure roller 3a is lowered as the raw material sheet D passes by, thus conveying and holding the raw material sheet D simultaneously.

[0050] like Figure 3 As shown, the raw material sheet D encounters the upstream region 10e of the curling sheet unit 10, i.e., the long sheet 10a, thereby forming a core for curling and initiating curling. The upstream region 10e is formed by the first part 11 with gripping force, thus creating resistance relative to the upper surface of the raw material sheet D, thereby promoting the formation of the core of the raw material sheet D. In addition, the resistance parts (short sheet 10b and rod-shaped part 10g) also apply resistance to the upper surface of the raw material sheet D, thereby promoting the formation of the core of the raw material sheet D. The core of the raw material sheet D is pulled between the second conveyor belt 2b and the curling sheet unit 10 and begins to roll. At this time, it is preferable to stretch the raw material sheet D between the core of the raw material sheet D and the pressure roller 3a. After the raw material sheet D passes the pressure roller 3a, the pressure roller 3a is raised.

[0051] Furthermore, the sensor 5b of the spraying device 5 detects the rear end of the raw material sheet D, and water is sprayed from the nozzle 5a when the rear end of the raw material sheet D passes through the hole 10ca. This causes the rear end of the raw material sheet D to adhere to the rolled raw material sheet D. This is to prevent the rear end of the raw material sheet D from separating from the adhesive area, thus preventing the rolled raw material sheet DC from loosening. Since the nozzle 5a is located downstream of the pressure roller 3a and the upstream region 10e, it is possible to prevent water from adhering to the pressure roller 3a and the upstream region 10e, thus preventing the raw material sheet D from adhering to the pressure roller 3a and the upstream region 10e.

[0052] like Figure 3 As shown, the diameter of the curled raw material sheet D gradually increases. The long sheet 10a of the curled sheet unit 10 bends in the conveying direction A in accordance with the shape of the raw material sheet D. Furthermore, as... Figure 4 As shown, the long strip 10a contacts the raw material sheet D at its maximum diameter and bends downwards and toward both sides in the width direction B due to the flexibility of the long strip 10a and the counterweight 20. This ensures that the raw material sheet D is rolled straight in the conveying direction A. That is, it prevents the raw material sheet D from rolling at an angle and prevents deviations in the shape of the rolled raw material sheet DC.

[0053] During the latter half of the curling process of the raw material sheet D and after curling is completed, the two ends of the small diameter of the core of the raw material sheet D sometimes come into contact with the long sheet 10a. The raw material sheet D contacts and rolls with the long sheet 10a at its maximum diameter, thus creating a speed difference between the core of the raw material sheet D and the long sheet 10a. If the long sheet 10a has a lower surface with greater gripping force, the raw material sheet D will rub against the long sheet 10a, resulting in a rough surface. In the curling apparatus 1 of the present invention, in the downstream region 10f (preferably, in the downstream region 10f and the region adjacent to its upstream side) at least where the curling of the raw material sheet D ends, the two sides of the lower surface 10d of the long sheet 10a in the width direction of contact with the core of the raw material sheet D are formed by a second portion 12 with less gripping force on the raw material sheet D. Therefore, even when the raw material sheet D contacts the long sheet 10a, surface roughness of the raw material sheet D can be suppressed. Furthermore, since the center of the lower surface 10d of the long sheet 10a in the width direction B is formed by the first part 11, the rolling of the raw material sheets D and DC can be reliably maintained.

[0054] In order to change the position of the rear end of the rolled raw material sheet DC to, for example, a position that contacts the third conveyor belt 2c, the rolled raw material sheet DC is rolled a predetermined distance between the third conveyor belt 2c and the pressing part 6c of the rolling position adjustment device 6.

[0055] Next, refer to Figure 11The first modified example of the coiled sheet unit is described. The coiled sheet unit 14 has a support portion 22 for the span member 4b mounted on the upstream side and a sheet hanging down from the support portion 22 and extending along the conveyor belt 2b in the conveying direction A. The sheet is composed of a long sheet 14a and two short sheets 14b.

[0056] like Figure 12 As shown, the long sheet 14a has the same structure as the long sheet 10a of the curled sheet unit 10. The reference numerals for the common structures are changed from 10 to 14, and their descriptions are omitted.

[0057] like Figures 13-14 As shown, the short piece 14b is rectangular and has the same width as the distance between the edge of the long piece 14a and the notch 14c. The two short pieces 14b are arranged in the upstream region 14e above the long piece 14a and without overlapping the notch 14c. For example, the short piece 10b is formed of the same material as the long piece 10a, and its lower surface is the same uneven surface as the first part 11. Furthermore, it is preferable that a plurality of rod-shaped portions 14g extending in the conveying direction are mounted on the upper surface of the short piece 14b. The short piece 14b and the rod-shaped portions 14g constitute a resistance portion for forming the core of the raw material sheet D. Since the curling unit 14 has the notch 14c, it is preferable to use it when placing filling into the raw material sheet D.

[0058] Next, refer to Figure 15 The second variation of the coiled sheet unit is described. The coiled sheet unit 16 has a support portion 22 for the span member 4b mounted on the upstream side and a sheet hanging down from the support portion 22 and extending along the conveyor belt 2b in the conveying direction A, the sheet being composed of a long sheet 16a.

[0059] like Figure 16 As shown, the long sheet 16a has the same structure as the long sheet 10a of the curled sheet unit 10. The reference numerals for the common structures are changed from 10 to 16, and their descriptions are omitted.

[0060] like Figure 16 As shown, the elongated sheet 16a has a hole 16c in the center of the upstream region 16e and in the width direction B, through which sprayed water passes. Furthermore, preferably, a plurality of rod-shaped portions 16g extending in the conveying direction are mounted on the upper surface of the elongated sheet 16b. The rod-shaped portions 16g constitute resistance portions for forming the core of the raw material sheet D.

[0061] When using the curling sheet units 14 and 16 as variations, the operation of the curling device 1 of the present invention is the same as when using the curling sheet unit 10.

[0062] Embodiments of the curling device of the present invention have been described, but the scope of the invention is not limited to these embodiments. That is, various modifications can be made in the claims, and these are also included within the scope of the invention.

[0063] In the above embodiments, the first part 11 is an uneven surface and the second part 12 is a smooth surface, but this is not a limitation. The shapes of the first part 11 and the second part 12 are arbitrary, as long as the gripping forces of the first part 11 and the second part 12 on the raw material sheet D are different. For example, the uneven shape of the first part 11 is arbitrary; for instance, multiple holes can be formed on a smooth surface to constitute the first part 11. In other examples, the first part 11 may be a surface with greater friction with the raw material sheet D, and the second part 12 may be a surface with less friction with the raw material sheet D. In other examples, the surface can also be formed by combining two sheets with different sliding ease, or by combining a metal chain and a polyurethane strip. Furthermore, the long sheets 10a, 14a, and 16a can also be formed by bonding separately manufactured sheets for the first part 11 and sheets for the second part 12.

[0064] In the above embodiment, the lower surfaces 10d, 14d, and 16d of the long plates 10a, 14a, and 16a are composed of two parts 11 and 12. However, for example, a third part may be added between the first part 11 and the second part 12, which has a gripping force located between the first part 11 and the second part 12.

[0065] In the above embodiments, the shape of the raw material sheet D is generally triangular, but not limited to this. For example, the shape of the raw material sheet D may be such that the core for curling protrudes to both sides in the width direction B within the curled raw material sheet DC. In this case, generally speaking, the width of the raw material sheet D narrows towards the rear end (upstream side).

[0066] In the above embodiments, the speeds of the first to third conveyor belts 2a, 2b, and 2c are different, but as long as the raw material sheet D can be curled, the speeds of the first to third conveyor belts 2a, 2b, and 2c can also be the same. Furthermore, the lower conveyor 2 can also be composed of a single conveyor belt.

[0067] If it is not necessary for the curled raw material sheet D, the pressure roller device 3, the spraying device 5, and the curling position adjustment device 6 can be omitted.

[0068] Explanation of reference numerals in the attached figures

[0069] 1. Curling device; 2b. Second conveyor belt; 4. Curling unit; 10, 14, 16. Curling sheet unit; 10a, 14a, 16a. Long sheet; 10b, 14b. Short sheet (resistance section); 10c, 14c. Notch; 10d, 14d, 16d. Lower surface; 10e, 14e, 16e. Upstream area; 10f, 14f, 16f. Downstream area; 10g, 14g, 16g. Rod-shaped section (resistance section); 11. Part 1; 12. Part 2; 16c. Hole; 20. Counterweight; A. Conveying direction; B. Width direction; D. Raw material sheet; DC. Curled raw material sheet.

Claims

1. A curling device (1) for curling a flat raw material sheet (D), wherein, The curling device (1) has: The lower conveyor (2) has a conveyor belt (2b) for conveying the raw material sheet (D); and The coiled sheet units (10, 14, 16) are arranged on the conveyor belt (2b). The curling sheet unit (10, 14, 16) includes curling sheets (10a, 14a, 16a) for curling the raw material sheet (D). The coiled sheets (10a, 14a, 16a) have lower surfaces (10d, 14d, 16d) opposite to the conveyor belt (2b), the lower surfaces (10d, 14d, 16d) comprising a first portion (11) with a relatively large gripping force on the raw material sheet (D) and a second portion (12) with a relatively small gripping force on the raw material sheet (D). The lower surfaces (10d, 14d, 16d) of the curled sheets (10a, 14a, 16a) are formed by the first part (11) in the upstream region (10e, 14e, 16e) where the curling of the raw material sheet (D) begins, and in the downstream region (10f, 14f, 16f) where the curling of the raw material sheet (D) ends, the center in the width direction is formed by the first part (11), and the two sides in the width direction are formed by the second part (12).

2. The curling device according to claim 1, wherein, The first part (11) is an uneven surface, and the second part (12) is a smooth surface.

3. The curling device (1) according to claim 1, wherein, The curling sheet unit (10, 14, 16) has a resistance section in the upstream region (10e, 14e, 16e) that promotes the curling of the raw material sheet (D).

4. The curling device (1) according to claim 3, wherein, The resistance section includes sheets (10b, 14b) that are independent of the coiled sheets (10a, 14a).

5. The curling device (1) according to claim 3, wherein, The resistance section includes a rod-shaped section (16g) integrated with the coiled sheet (16a).

6. The curling device (1) according to claim 1, wherein, The coiled blades (10a, 14a, 16a) have notches or holes (10c, 14c, 16c) for the liquid to pass through.

7. The curling device (1) according to claim 1, wherein, The curling device (1) also has a counterweight (20) which is disposed on the curling sheets (10a, 14a, 16a) and on both sides in the width direction (B).

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