JP6905704B2 - Inspection equipment - Google Patents

Description

The present invention relates to an inspection device including a camera that reads information on an enclosed object through an envelope window.

The inspection device of Patent Document 1 inspects erroneous encapsulation by reading information on the enclosed object from the window portion formed in the envelope while sequentially transporting the envelope containing the enclosed object.

Japanese Unexamined Patent Publication No. 2013-95429 (paragraphs [0037] to [0038], FIG. 7)

However, in the inspection device of Patent Document 1, if there are wrinkles in the window portion, there is a problem that light is diffusely reflected in the window portion and reading becomes difficult. In order to solve this problem, it is conceivable to press the window portion of the envelope against the transparent plate with a plate material or the like to smooth out the wrinkles of the window portion and read the information of the enclosed object through the transparent plate. Then, another problem may occur in which the plate material becomes a resistance during transportation.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inspection device capable of smoothly transporting an envelope while suppressing the influence of wrinkles on a window portion.

The invention of claim 1 made in order to achieve the above object is that an envelope with a window in which an object to be enclosed is enclosed and a flap is coated with a liquid agent for adhesion and closed is provided with the flap facing up and said. and conveying means comprising a conveying path that is conveyed placed in a state where the window was below the top, a transparent plate provided in the middle of the conveying path is disposed below the transparent plate, the envelope A reading means for reading information on the enclosed object through the window when passing over the transparent plate with the window facing downward, and a flap extending along the transport path above the transport path. A flap holding belt that presses the window from above, a window holding belt that extends along the transport path above the transparent plate in the transport path, and presses the window portion of the envelope against the transparent plate, and the flap. A connecting member that integrally rotatably connects a first roller that supports the presser belt from the inside and a second roller that has the same outer diameter as the first roller and supports the window presser belt from the inside, and the window. A window that applies power to the first roller and the second roller so as to move the lower surface of the part pressing belt and the lower surface of the flap pressing belt in the same direction as the conveying direction of the envelope at the same speed or substantially the same speed. It is an inspection device having a part presser belt drive mechanism and a vertical movement mechanism for moving the window presser belt in the vertical direction according to the thickness of the envelope.

According to the second aspect of the present invention, the second roller connected to the first roller by the connecting member is arranged at the upstream end of the window pressing belt, and the window pressing belt is the second roller. The inspection device according to claim 1, wherein the vertical movement mechanism is supported so as to be swirling around a roller, and the second roller is moved in the vertical direction.

In the present invention, since the window portion of the envelope is sandwiched between the window portion pressing belt and the transparent plate, it is possible to smooth out the wrinkles of the window portion. Further, since the lower surface of the window holding belt moves in the same direction as the envelope is conveyed, it is possible to prevent the window pressing belt from becoming a resistance during transportation. As described above, according to the present invention, it is possible to smoothly convey the envelope while suppressing the influence of wrinkles on the window portion.

In the invention of claim 2, even if the upstream end of the window holding belt is lifted by the envelope, the downstream end of the window holding belt is placed on the transparent plate, so that the window is wrinkled. It becomes easier to stretch.

Perspective view of the envelope transport device according to the embodiment of the present invention as viewed from the downstream side of the transport path. Perspective view of the envelope transfer device from the upstream side of the transfer path View of the upstream end of the transport path from above Schematic configuration of the feed roller and transport belt drive mechanism Side sectional view of the upstream end of the flap retainer belt Side view of the second base View of the presser foot position adjustment mechanism from above FIG. 7 is an enlarged view of (A) the downstream side portion of the presser foot position adjusting mechanism, and (B) an enlarged view of the upstream side portion. Perspective view of presser position adjustment mechanism and vertical movement mechanism View of the vertical movement mechanism from above (A) Side view of the upstream part of the vertical movement mechanism (B) Side view of the upstream part of the vertical movement mechanism when the flap holding belt moves upward, (A) Side cross-sectional view of the window presser belt, (B) Side cross-sectional view of the window presser belt when moved upward.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the envelope transport device 10 corresponding to the “inspection device” of the present invention is formed by assembling various parts to the support base 11. The support base 11 is taller than the first base portion 13 having a transport path 12 on which the envelope 90 (see FIG. 3) is transported, and the first base portion 13 which is arranged on the side of the transport path 12 and is arranged on the side of the transport path 12. It includes a second base portion 14. The portion of the second base portion 14 facing the transport path 12 is composed of an upright wall 14H that stands vertically and extends along the transport path 12. Hereinafter, the side of the upright wall 14H facing the transport path 12 will be referred to as a front side, and the side facing the opposite side of the transport path 12 will be referred to as a back side as appropriate. The envelope transport device 10 may be provided integrally with the sealing / sealing machine, or may be provided separately from the sealing / sealing machine.

As shown in FIGS. 3 and 4, a pair of feed rollers 21 and 21 and a transport belt 22 are attached to the upper portion of the first base portion 13. The pair of feed rollers 21 and 21 are arranged on the upstream side of the transport belt 22 in the transport direction with respect to the transport belt 22. A transparent plate 23 is arranged between the pair of feed rollers 21 and 21. The above-mentioned transport path 12 is formed on the pair of feed rollers 21 and 21, the transport belt 22, and the transparent plate 23. A plurality of transport belts 22 are arranged side by side in the transport direction and the width direction of the transport path 12 (FIG. 1).

As shown in FIG. 4, the first base portion 13 has a pair of feed rollers 21 and 21 and a drive source 24 for driving the transport belt 22, and a pair of feeds of power from the drive source 24. The rollers 21 and 21 and the first power transmission mechanism 25 that transmits to the transport belt 22 are assembled. The first power transmission mechanism 25 includes a drive pulley 24K directly connected to the drive source 24, a plurality of driven pulleys 26, and a power transmission belt 27 spanned between the drive pulley 24K and the plurality of driven pulleys 26. ing. Then, the power transmission belt 27 is also hung on the transfer belt roller 22R and the feed roller 21 on which the transfer belt 22 is hung, so that the transfer belt 22 and the feed roller 21 are driven.

As shown in FIG. 3, the envelope 90 transported on the transport path 12 includes a flap 91 and a window portion 92 that makes the enclosed object visible. A liquid agent (for example, water) for adhering the flap 91 is applied to the flap 91, and the envelope 90 is conveyed with the flap 91 facing upward with the flap 91 closed. At this time, the flap 91 is abutted against the upright wall 14H (FIG. 1) of the second base portion 14 and extends along the transport path 12. The window portion 92 is arranged downward.

As shown in FIGS. 1 and 2, the envelope transport device 10 is provided with a thickness measuring device 15 for measuring the thickness of the envelope 90. The thickness measuring device 15 is fixed to the surface of the upright wall 14H of the second case portion 14 facing the front side, and is arranged above the transport path 12.

As shown in FIG. 1, above the transport path 12, there are a support shaft portion 29J protruding from the upright wall 14H of the second base portion 14, and a swing lever 29L rotatably attached to the support shaft portion 29J. A presser roller 29 rotatably attached to the end of the swing lever 29L is provided. Then, when the envelope 90 is transported to the transport path 12, the presser roller 29 floats up according to the thickness of the envelope 90, and the envelope 90 is sandwiched between the presser roller 29 and the transport path 12. In other words, the envelope 90 is sandwiched between the transport path 12 and the presser roller 29 regardless of its thickness. As a result, the floating of the envelope 90 on the transport path 12 is suppressed.

As shown in FIGS. 1 to 3, the envelope transport device 10 includes a flap holding belt 30 that presses the flap 91 of the envelope 90 from above. The flap holding belt 30 extends along the transport path 12 above the portion of the transport path 12 arranged on the second base portion 14 side.

As shown in FIGS. 6 and 9, the flap holding belt 30 is supported by the support frame 35. In the support frame 35, a pair of groove-shaped members 36, 36 are connected by a connecting member 36A, the bottom wall of the groove-shaped member 36 is arranged inside the flap pressing belt 30, and the flap pressing belt 30 is attached from the inside. To support. Further, as shown in FIGS. 3, 5 and 6, the flap pressing belt 30 is hung on a plurality of flap pressing belt rollers 31 rotatably supported by the second base portion 14 and the support frame 35. .. As shown in FIG. 5, the upstream end portion of the lower surface of the flap holding belt 30 is inclined so as to be upward toward the upstream side. As a result, even if the thickness of the envelope 90 to be transported is different, the flap holding belt 30 can easily sandwich the envelope 90 between the envelope 90 and the transport path 12.

As shown in FIG. 4, the flap holding belt 30 is driven by receiving power from the transport belt 22 by the second power transmission mechanism 32. The second power transmission mechanism 32 includes a relay pulley 33A, a relay belt 33B, and a driven roller 34. The relay pulley 33A is rotatably attached to the first base portion 13. The relay belt 33B is hung on the relay pulley 33A and the first roller 31A located on the most downstream side of the plurality of flap pressing belt rollers 31 on which the flap pressing belt 30 is hung, and is hung on the transport path 12 It is arranged so that it goes down toward the upstream side of. The driven roller 34 rotates with the rotation of the transport belt 22, and pushes up the relay belt 33B from below. In the second power transmission mechanism 32, when the driven roller 34 rotates, the power from the driven roller 34 is transmitted to the first roller 31A via the relay belt 33B, and the first roller 31A rotates. As a result, the flap holding belt 30 is driven by receiving the power from the transport belt 22.

The second power transmission mechanism 32 drives the flap pressing belt 30 so that the lower surface of the flap pressing belt 30 moves in the same direction as the conveying direction of the conveying belt 22 (that is, the conveying direction of the envelope 90). Therefore, in the present embodiment, it is suppressed that the flap pressing belt 30 that presses the flap 91 from above becomes a resistance when the envelope 90 is conveyed.

Here, it is preferable that the lower surface of the flap holding belt 30 moves at the same speed as the transport speed of the transport belt 22. Therefore, in the second power transmission mechanism 32, the diameter of the driven roller 34 and the diameter of the first driving roller 31A are the same. As a result, the rotation speed of the driven roller 34 and the rotation speed of the first drive roller 31A can be made the same magnitude, and the movement speed of the lower surface of the flap holding belt 30 becomes the same as the transportation speed of the transfer belt 22. It becomes possible.

As shown in FIG. 6, a presser foot position adjusting mechanism 40 for adjusting the position of the flap presser belt 30 in the width direction of the transport path 12 is attached to the second base portion 14. As a result, in the present embodiment, the flap 91 can be pressed at an appropriate position, and the liquid agent is suppressed from squeezing out from the flap 91.

As shown in FIGS. 6 and 7, the presser foot position adjusting mechanism 40 is provided on the back side of the upright wall 14H of the second base portion 14 at the swing member 41 extending horizontally along the transport path 12 and at both ends of the swing member 41. A relay link 43 that is connected and penetrates through the through hole 43A of the upright wall 14H, and an upper side that rotates around a vertical shaft 45 extending in the vertical direction on the front side of the upright wall 14H by receiving power from the relay link 43. It includes a rotating link 44U and a lower rotating link 44L.

As shown in FIG. 7, the center portion of the swing member 41 is supported by the rotation shaft portion 41J, and the swing member 41 rotates in a horizontal plane about an axis extending in the vertical direction. The inclination angle (inclination angle with respect to the transport path 12) of the swing member 41 with respect to the upright wall 14H is adjusted by the position adjusting handle 42 attached to the front side of the upright wall 14H. Specifically, the position adjusting handle 42 is connected to a portion closer to one end in the axial direction of the swing member 41. Then, when the position adjusting handle 42 is operated, the connecting portion of the swinging member 41 with the position adjusting handle 42 moves in the thickness direction of the upright wall 14H, and the swinging member 41 rotates about the rotation shaft portion 41J. do. As a result, the inclination angle of the swing member 41 with respect to the upright wall 14H is adjusted.

As shown in FIGS. 7 and 8, the relay link 43 moves in the thickness direction of the upright wall 41, that is, in the width direction of the transport path 12, as the swing member 41 swings. The end of the upper rotating link 44U on the side away from the vertical shaft 45 is connected to the relay link 43. As shown in FIGS. 8A and 8B, the upper rotating link 44U rotates about the vertical shaft 45 as the relay link 43 moves. The lower rotating link 44L rotates integrally with the upper rotating link 44U (FIG. 8B). As shown in FIGS. 6 and 9, the end of the lower rotating link 44L on the side away from the vertical shaft 45 is rotatably connected to the base plate 46. The base plate 46 is fixed to the groove-shaped member 36 of the support frame 35 that supports the flap holding belt 30. Then, when the lower rotation link 44L rotates, the support frame 35 moves in the width direction of the transport path 12, and the flap holding belt 30 moves in the width direction of the transport path 12.

As shown in FIGS. 7 and 9, a support plate 47 projects from the upright wall 14H to the front side, and a vertical shaft 45 is inserted through a support sleeve 48 fixed to the support plate 47. Further, as shown in FIGS. 6 and 9, the upper rotating link 44U is connected to the intermediate portion of the vertical shaft 45, and the lower rotating link 44L is connected to the lower end portion of the vertical shaft 45.

As shown in FIG. 6, the second base portion 14 is attached with a vertical movement guide mechanism 50 that moves the entire flap pressing belt 30 in the vertical direction according to the thickness of the envelope 90. Specifically, the vertical movement guide mechanism 50 moves the flap holding belt 30 in the vertical direction while maintaining a state in which the lower surface of the flap holding belt 30 is arranged along the transport path 12. Thereby, in the present embodiment, even if the envelopes 90 having different thicknesses are conveyed, the envelopes 90 can be smoothly conveyed.

As shown in FIGS. 6 and 10, the vertical movement guide mechanism 50 includes a rod-shaped member 51 and a pair of relay levers 52 and 52. The rod-shaped member 51 extends horizontally along the transport path 12 on the back side of the upright wall 14H of the second base portion 14. A pair of relay levers 52, 52 are arranged above the upstream side portion and the downstream side portion of the transport path 12. Each relay lever 52 has a shaft portion 52S penetrating the upright wall 14H, a first lever piece 52A extending downward from the shaft portion 52S on the back side of the upright wall 14H and connecting to the rod-shaped member 51, and a front side of the upright wall 14H. It is composed of a second lever piece 52B extending laterally (specifically, a direction facing the upstream side of the transport path 12) from the shaft portion 52S and connecting to the upper end portion of the vertical shaft 45.

Further, the vertical movement guide mechanism 50 includes a tension spring 53 that urges the rod-shaped member 51 in the direction in which the second lever piece 52B projects from the shaft portion 52S (that is, in the direction toward the upstream side of the transport path 12). .. Specifically, the tension spring 53 is supported on the back surface of the upright wall 14H and is hooked on the slider 54 attached to the rod-shaped member 51. The slider 54 can be fixed at an arbitrary position in the axial direction of the rod-shaped member 51. Then, the urging force of the tension spring 53 is adjusted by changing the position of the slider 54 in the axial direction of the rod-shaped member 51.

The vertical movement guide mechanism 50 operates as follows. When the envelope 90 is sandwiched between the flap holding belt 30 and the transport path 12 (specifically, the feed roller 21 on the upstream side) and the upstream end of the flap holding belt 30 is lifted, FIG. 11A is shown. As shown in the change from FIG. 11B, the relay lever 52 on the upstream side rotates in the direction of moving the second lever piece 52B upward. Then, the rod-shaped member 51 moves horizontally to the upstream side in the transport direction, and the relay lever 52 on the downstream side rotates so as to move the first lever piece 52A to the upstream side in the transport direction. When the relay lever 52 on the downstream side rotates, the second lever piece 52B of the relay lever 52 moves upward, and the vertical shaft 45 is lifted. As described above, the vertical shaft 45 is connected to the support frame 35 via the base plate 46. Then, when the support frame 35 is lifted upward, the entire flap pressing belt 30 moves upward. When the envelope 90 is transported and disappears from the transport path 12, the flap holding belt 30 moves downward due to the weight of the members (vertical shaft 45, support frame 35, etc.) hanging from the second lever piece 52B.

Specifically, as shown in FIG. 6, the first roller 31A located on the most downstream side and the second roller 31 located on the most upstream side of the plurality of flap pressing belt rollers 31 on which the flap pressing belt 30 is hung are located. The roller 31B is supported by the second base portion 14 and does not move in the vertical direction integrally with the support frame 35. As shown in FIGS. 11A and 11B, the flap pressing belt 30 is provided by the third roller 31C supported by the groove-shaped member 36 of the support frame 35 among the plurality of flap pressing belt rollers 31. Lifted upwards. The third roller 31C is arranged inside the flap pressing belt 30 above the first roller 31A and the second roller 31B, and is a portion of the flap pressing belt 30 that moves in the direction opposite to the transport direction of the envelope 90 (flap pressing). It is in contact with the upper portion of the belt 30) from below.

As described above, the tension spring 53 urges the rod-shaped member 51 to the upstream side in the transport direction. By adjusting the urging force of the tension spring 53, the second lever piece 52B of the relay lever 52 is not sandwiched between the flap holding belt 30 and the transport path 12 (FIG. 11 (A)). The weight of the hanging member (vertical shaft 45, support frame 35, etc.) can be canceled. As a result, the vertical movement guide mechanism 50 can smoothly move the flap holding belt 30.

In the presser position adjusting mechanism 40 (FIGS. 7 to 9) described above, the swinging member 41 swings only in the horizontal direction. Therefore, the relay link 43 provided between the swinging member 41 and the vertical shaft 45 swings up and down with the connecting portion with the swinging member 41 as a fulcrum. Therefore, the through hole 43A of the upright wall 14H through which the relay link 43 penetrates is formed in a size that allows the relay link 43 to swing.

As shown in FIGS. 12A and 12B, a reading device 94 for inspecting the enclosed object of the envelope 90 is provided below the transparent plate 23. The reading device 94 is, for example, a barcode reader, a camera, or the like, and reads information on the enclosed object from the barcode or the like printed on the enclosed object of the envelope 90 through the window portion 92. As described above, the envelope transport device 10 of the present embodiment is also an inspection device for inspecting the enclosed object of the envelope 90. The envelope transfer device 10 is provided with an edge sensor (not shown) that detects the front end of the envelope 90 transported on the transparent plate 23, and the reading device 94 uses the edge sensor to detect the front end of the envelope 90. The information on the enclosed object is read at the timing when is detected.

The envelope transfer device 10 includes a window portion holding belt 60 that presses the region of the envelope 90 in which the window portion 92 is formed from above. The window holding belt 60 extends above the transparent plate 23 along the transport path 12.

As shown in FIGS. 2 and 3, a plurality of window holding belts 60 are arranged in the width direction of the transport path 12. The plurality of window presser belts 60 are hung on a pair of window presser belt rollers 62, 62 rotatably attached to the support frame 61.

As shown in FIG. 3, the window presser belt 60 is driven by receiving power from the flap presser belt 30 by the third power transmission mechanism 60K. The third power transmission mechanism 60K is for a rotation shaft of one of the pair of windows presser belt rollers 62, 62 for the window presser belt roller 62 and for a plurality of flap presser belts on which the flap presser belt 30 is hung. It is composed of a connecting member 63 that connects the rotating shaft of the fourth roller 31D included in the roller 31 with the rotating shaft. The window holding belt roller 62 and the fourth roller 31D connected by the connecting member 63 rotate integrally.

Here, the fourth roller 31D is arranged inside the flap pressing belt 30 and abuts only on the portion of the flap pressing belt 30 that moves in the transport direction of the envelope 90. Therefore, the lower surface of the window pressing belt 60, which is rotationally driven by the window pressing belt roller 62, moves in the same direction as the transport direction of the envelope 90. As a result, it is possible to prevent the window holding belt 60 from becoming a resistance during transportation.

The diameter of the window holding belt roller 62 connected by the connecting member 63 is the same as the diameter of the fourth roller 31D. Therefore, the rotation speed of the fourth roller 31D and the rotation speed of the window pressing belt roller 62 can be made the same, and the moving speed of the lower surface of the window pressing belt 60 can be changed to the moving speed of the lower surface of the flap pressing belt 30. That is, it is possible to make the transfer speed of the transfer belt 22 the same.

In the present embodiment, the connecting member 63 is connected to the window pressing belt roller 62 on the upstream side of the pair of window pressing belt rollers 62, 62. Further, the support frame 61 is configured to be able to swing around the central axis of the connecting member 63. Therefore, when the flap pressing belt 30 is lifted upward when the envelope 90 is conveyed, as shown in the change from FIG. 12A to FIG. 12B, the roller for the window pressing belt on the upstream side is shown. Only 62 moves upward, and the roller 62 for the window holding belt on the downstream side remains mounted on the transparent plate 23. In this way, in the envelope transport device 10, the roller 62 for the window holding belt on the downstream side is always placed on the transparent plate 23, so that the window portion 92 of the envelope 90 is made to be the transparent plate 23 by the window holding belt 60. It is possible to press it securely on the window.

This concludes the description of the configuration of the envelope transport device 10 of the present embodiment. In the present embodiment, the envelope transfer device 10 corresponds to the "inspection device" of the present invention, and the reading device 94 corresponds to the "reading means" of the present invention, and the pair of feed rollers 21 and 21 and the transfer belt 22. Corresponds to the "conveying means" of the present invention, and the third power transmission mechanism 60K corresponds to the "window holding belt drive mechanism" of the present invention. Further, the vertical movement guide mechanism 50 corresponds to the "vertical movement mechanism" of the present invention.

Next, the operation and effect of the envelope transfer device 10 of the present embodiment will be described. In the envelope transport device 10 of the present embodiment, since the envelope 90 is sandwiched between the flap pressing belt 30 and the transport path 12, the envelope 90 is sandwiched between the roller and the transport path 12 as in the envelope transport device shown in Patent Document 1. The pressing area of the flap 91 is larger than that of sandwiching the envelope 90. This makes it possible to sufficiently bond the flaps 91. Further, since the lower surface of the flap pressing belt 30 moves in the same direction as the conveying direction of the envelope 91, it is possible to prevent the flap pressing belt 30 from becoming a resistance during conveying. As described above, according to the envelope transport device 10, it is possible to smoothly transport the envelope 90 while suppressing the adhesion failure of the flap 91. Moreover, in the envelope transport device 10, the moving speed of the lower surface of the flap holding belt 30 can be made the same as the transport speed of the envelope 90 (the transport speed of the transport belt 22), so that the flap presser belt 30 becomes a resistance during transport. It can be further suppressed.

In the envelope transport device 10 of the present embodiment, since the position of the flap pressing belt 30 in the width direction of the transport path 12 can be adjusted, the flap 91 can be pressed at an appropriate position, and the liquid agent from the flap 91 can be pressed. The protrusion of the belt is suppressed. Moreover, in the envelope transport device 10, the position of the flap holding belt 30 in the width direction of the transport path 12 can be easily adjusted only by adjusting the inclination angle of the swing member 41 with respect to the transport path 12 by the position adjusting handle 42. It becomes.

In the envelope transport device 10 of the present embodiment, since the entire flap pressing belt 30 moves in the vertical direction according to the thickness of the envelope 90, the envelope 90 can be smoothly transported even if the thickness of the envelope 90 is different. Become. Moreover, according to the vertical movement guide mechanism 50 of the envelope transport device 10, the flap holding belt 30 can be automatically moved in the vertical direction. Further, in the envelope transport device 10, the influence of the weight of the members (vertical shaft 45 and the support frame 35) hanging from the relay lever 52 by the tension spring 53 can be reduced, and the flap holding belt 30 can be smoothly moved up and down. become.

In the envelope transport device 10 of the present embodiment, since the window portion 92 of the envelope 90 is sandwiched between the window portion holding belt 60 and the transparent plate 23, the wrinkles of the window portion 92 can be smoothed. Since the lower surface of the window holding belt 60 moves in the same direction as the envelope 90 is conveyed, it is possible to prevent the window pressing belt 60 from becoming a resistance during transportation. As described above, according to the envelope transport device 10, the envelope 90 can be smoothly transported while suppressing the influence of wrinkles on the window portion 92. Moreover, in the envelope transport device 10, the moving speed of the lower surface of the window presser belt 60 can be made the same as the transport speed of the envelope 90 (the transport speed of the transport belt 22), so that the window presser belt 60 can be transported. It becomes resistance even more.

In the envelope transport device 10 of the present embodiment, since the window holding belt 60 moves in the vertical direction according to the thickness of the envelope 90, the envelope 90 can be smoothly transported even if the thickness of the envelope 90 is different. .. Moreover, in the envelope transport device 10, even if the upstream end of the window holding belt 60 is lifted by the envelope 90, the downstream end of the window holding belt 60 is placed on the transparent plate 23. Therefore, the window portion 92 of the envelope 90 can be reliably pressed by the window portion pressing belt 60, and the wrinkles of the window portion 92 can be easily smoothed out.

[Other Embodiments]
The present invention is not limited to the above embodiments, and for example, embodiments as described below are also included in the technical scope of the present invention, and various other than the following, as long as they do not deviate from the gist. It can be changed and implemented.

(1) In the above embodiment, the flap holding belt 30 may be driven by a drive source different from the drive source 24 that drives the transport belt 22.

(2) In the above embodiment, the power may not be transmitted from the flap pressing belt 30 to the window pressing belt 60. In this case, the window holding belt 60 may receive power directly from the first power transmission mechanism 25, or may be driven by a drive source different from the drive source 24 that drives the transport belt 22.

(3) In the above embodiment, the vertical movement guide mechanism 50 may not be provided, that is, the entire flap pressing belt 30 may not move in the vertical direction according to the thickness of the envelope 90. Even with this configuration, if the thickness of the envelope 90 to be conveyed is substantially constant, the envelope 90 can be stably conveyed while the flap 91 is pressed by the flap pressing belt 30. As a specific configuration, the upstream end portion and the downstream end portion of the flap pressing belt 30 move separately in the vertical direction, and the entire flap pressing belt 30 is not related to the transport path 12. An example is a configuration in which the device moves in the vertical direction in a parallel state.

(4) In the above embodiment, the entire window presser belt 60 may move in the vertical direction while keeping the window presser belt 60 and the transport path 12 parallel to each other. Specifically, the support frame 61 that supports the window presser belt 60 is fixed to the support frame 35 that supports the flap presser belt 30, so that the support frame 61 moves in the vertical direction integrally with the flap presser belt 30. It should be configured. In this case, the connecting member 63 of the third power transmission mechanism 60K is preferably connected to the window belt roller 62 on the downstream side.

10 Envelope transport device 21 Feed roller 22 Transport belt 50 Vertical movement guide mechanism 60 Window presser belt 60K Third power transmission mechanism 94 Reader

Claims (2)

A transport path in which an envelope with a window, in which an object to be enclosed is sealed and a flap is coated with an adhesive liquid, is placed and transported with the flap facing up and the window facing down. With a transport means provided at the top
A transparent plate provided in the middle of the transport path and
A reading means, which is arranged below the transparent plate and reads information on the enclosed object through the window when the envelope passes over the transparent plate with the window facing downward .
A flap holding belt that extends above the transport path along the transport path and presses the flap from above.
A window holding belt extending above the transparent plate of the transport path along the transport path and pressing the window portion of the envelope against the transparent plate.
A connecting member that integrally rotatably connects the first roller that supports the flap holding belt from the inside and the second roller that has the same outer diameter as the first roller and supports the window holding belt from the inside.
Power is applied to the first roller and the second roller so that the lower surface of the window presser belt and the lower surface of the flap presser belt are moved in the same direction as the transport direction of the envelope at the same speed or substantially the same speed. and a window portion pressing belt drive mechanism,
An inspection device having a vertical movement mechanism for moving the window holding belt in the vertical direction according to the thickness of the envelope. The second roller connected to the first roller by the connecting member is arranged at the upstream end of the window holding belt.
The window holding belt is supported so as to be able to swing around the second roller.
The inspection device according to claim 1, wherein the vertical movement mechanism moves the second roller in the vertical direction.

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