Processing device

Abstract

To suppress light leakage when a cover is broken.SOLUTION: A processing device according to the present disclosure includes: a light source which emits light; a case which houses the light source; a cover which is provided on the case so as to be openable / closable, and suppresses transmission of the light; a detection target member which is attached to the cover; a sensor for detecting opening / closing of the cover by detecting the detection target member; and a sheet member which is attached to the cover in the periphery of the detection target member and has light-shielding properties with respect to the light.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a processing apparatus.

Background Art

[0002] Patent Document 1 describes a printing apparatus that detects the open / closed state of a cover by an interlock switch.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, in order to make the inside of the apparatus visible even when the cover is in the closed state, a cover using a light-transmitting plate having light-transmitting properties is adopted. However, when a light source (for example, a UV-LED lamp) that irradiates ultraviolet light is provided inside the apparatus, it is desirable that the cover be made of a member capable of suppressing the transmission of ultraviolet light. On the other hand, when detecting the opening and closing of the cover by a sensor, the cover may be easily cracked in the vicinity of the sensor. And when the cover is cracked, there is a risk that ultraviolet light may leak from the crack of the cover.

[0005] An object of the present invention is to suppress light leakage when the cover is cracked.

Means for Solving the Problems

[0006] The main invention for achieving the above object is a light source that irradiates light, a case that houses the light source, a cover that is provided to be openable and closable on the case and suppresses the transmission of the light, a detected member attached to the cover, A sensor for detecting the opening and closing of the cover by detecting the detected member, A sheet member that is attached to the cover around the detected member and has light-shielding properties against the light, A processing apparatus comprising:

[0007] Other features of the present invention will be clarified by the description in this specification.

Advantages of the Invention

[0008] According to the present invention, it is possible to suppress light leakage when the cover is cracked.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0010] ===Embodiment=== <Overall Configuration> FIG. 1A and FIG. 1B are perspective views of the processing apparatus 1.

[0011] In the following description, as shown in FIG. 1A, each direction is defined. The direction perpendicular to the mounting surface on which the processing apparatus 1 is mounted is the "vertical direction", the side of the processing apparatus 1 as viewed from the mounting surface is the "upper side", and the opposite side is the "lower side". Note that the vertical direction is a direction parallel to the vertical direction. The direction parallel to the rotation axis 12A of the cover 12 is the "left - right direction", the right - hand side as viewed from the operator who operates the cover 12 is the "right", and the opposite side is the "left". Also, the direction perpendicular to the vertical direction and the left - right direction is the front - rear direction, the side of the operator who operates the cover 12 as viewed from the processing apparatus 1 is the "front", and the opposite side is the "rear".

[0012] In the following description, as shown in FIG. 1A, the state in which the cover 12 is closed may be referred to as the "closed state". Also, as shown in FIG. 1B, the state in which the cover 12 is open may be referred to as the "open state". Further, the direction in which the cover 12 rotates from the closed state to the open state may be referred to as the "open direction", and the direction in which the cover 12 rotates from the open state to the closed state may be referred to as the "closed direction".

[0013] The processing apparatus 1 is an apparatus that performs processing using light (for example, UV light). The processing apparatus 1 is, for example, a UV printer that discharges UV ink, a three - dimensional printer that laminates UV resin, or a UV laser processing machine that performs processing using a UV laser. The processing apparatus 1 includes a case 11 and a cover 12.

[0014] The case 11 is a container that houses a light source 23 (not shown in FIGS. 1A and 1B; see FIG. 2) that irradiates UV light. The case 11 may also be called a housing. The case 11 is composed of a member that can shield UV light. The case 11 rotatably supports the cover 12. Also, the case 11 has a support portion 11A that supports the periphery of the cover 12 in the closed state.

[0015] The cover 12 is provided on the case 11 so as to be openable and closable, suppressing the leakage of UV light to the outside. The cover 12 is composed of a member that suppresses the transmission of UV light (a member that absorbs UV light). Here, the cover 12 is composed of a translucent acrylic plate (a translucent acrylic plate with a UV light transmittance of 5% or less) that can shield 95% or more of UV light. However, the cover 12 may be composed of an opaque plate. Also, the cover 12 may be composed of a material different from the acrylic plate.

[0016] The rotation axis 12A of the cover 12 is arranged at the upper part of the cover 12. When the cover 12 is in the closed state, the cover 12 is configured to be inclined so that the lower side is more forward. Since the rotation axis 12A of the cover 12 is arranged at the upper part of the cover 12, the cover 12 is in the closed state due to its own weight. When opening the cover 12, the operator will lift the lower edge of the cover 12.

[0017] Figure 2 is a block diagram of the processing apparatus 1. The processing apparatus 1 includes a processing machine main body 20, a control unit 30, and an opening / closing detection unit 40.

[0018] The processing machine main body 20 performs processing inside the case 11. The processing machine main body 20 includes a head 21, a moving unit 22, and a light source 23.

[0019] The head 21 discharges an ultraviolet curable resin (for example, UV ink or UV resin). The moving unit 22 relatively moves the head 21 and the workpiece. Here, the moving unit 22 includes a carriage unit 221 that moves the head 21 and a table unit 222 that moves the workpiece (a printing medium such as paper or film, or a three-dimensional object). The carriage unit 221 includes a carriage 221A and a carriage motor 221B. The carriage 221A mounts the head 21 and is configured to be movable in the left-right direction. The carriage motor 221B is a drive source for moving the carriage 221A. Note that the carriage unit 221 has a transmission mechanism (not shown; for example, gears, pulleys, belts, etc.) for transmitting the driving force of the carriage motor 221B to the carriage 221A. The table unit 222 includes a table 222A and a table motor 222B. The table 222A can place the workpiece and is configured to be movable in the front-rear direction (and the up-down direction). The table motor 222B is a drive source for moving the table 222A. Note that the table unit 222 has a transmission mechanism (not shown; for example, a feed screw mechanism, etc.) for transmitting the driving force of the table motor 222B to the table 222A. Note that the configuration of the moving unit 22 is not limited to this. For example, the moving unit 22 may not include the table unit 222. Also, the configuration of the processing machine main body 20 is not limited to this. For example, the processing machine main body 20 may not include the head 21.

[0020] The light source 23 is a member that irradiates light. For example, the light source 23 has a light emitting part composed of a laser diode (LD) or a light emitting diode (LED). Here, the light source 23 irradiates UV light, but the light irradiated by the light source 23 is not limited to UV light and may be visible light. Also, here, the light source 23 irradiates light for curing the ultraviolet curable resin discharged from the head 21, but may irradiate light for other purposes.

[0021] The control unit 30 controls the processing apparatus 1. The control unit 30 has, for example, an arithmetic processing unit and a storage device (not shown), and the arithmetic processing unit executes a program stored in the storage device. The control unit 30 includes a processing control unit 31 and an interlock unit 32. The processing control unit 31 controls each part of the processing machine main body 20 based on a processing command from an external computer, and causes the processing machine main body 20 to perform a processing operation. The interlock unit 32 stops the processing operation of the processing machine main body 20 when a predetermined condition is not satisfied (or when a predetermined condition is satisfied). For example, when the interlock unit 32 determines based on the signal from the opening / closing detection unit 40 that the cover 12 is in the open state, the interlock unit 32 stops the processing operation (particularly, the irradiation of light from the light source 23) of the processing machine main body 20.

[0022] The opening / closing detection unit 40 detects the opening and closing of the cover 12. The opening / closing detection unit 40 (specifically, the sensor 60 described later) outputs a signal indicating the open state or the closed state of the cover 12 to the control unit 30.

[0023] <Regarding the detection of the opening and closing of the cover 12> FIGS. 3A, 3B, 4A, and 4B are explanatory views of the configuration around the opening / closing detection unit 40. FIGS. 3A and 3B are explanatory views when the cover 12 is in the closed state. FIGS. 4A and 4B are explanatory views when the cover 12 is in the open state.

[0024] The opening / closing detection unit 40 includes a detected member 50, a sensor 60, and a stopper 70.

[0025] The detected member 50 is a member attached to the cover 12 and is a member detected by the sensor 60. The detected member 50 may also be called a striker. When the sensor 60 detects the detected member 50, the opening and closing of the cover 12 are detected. Here, the detected member 50 is formed of an L-shaped sheet metal. Note that the detected member 50 is not limited to a metal member. Also, the detected member 50 is not limited to a plate-shaped member. Here, the detected member 50 is composed of a first plate portion 51 and a second plate portion 52.

[0026] The first plate portion 51 is a plate-shaped portion fixed to the cover 12. The first plate portion 51 is arranged parallel to the cover 12. The first plate portion 51 is arranged on the back surface of the cover 12 and is screwed to the cover 12 at two locations. Note that the fixing method of the first plate portion 51 is not limited to screwing, and other fixing methods may also be used.

[0027] The second plate portion 52 is a plate-shaped portion formed by being bent rearward from the first plate portion 51. The second plate portion 52 is arranged so as to protrude from the back surface of the cover 12. The second plate portion 52 is arranged perpendicular to the cover 12. The second plate portion 52 is a portion to be detected by the sensor 60. The second plate portion 52 has a first contact portion 52A and a second contact portion 52B. The first contact portion 52A is a portion that contacts the sensor 60. The second contact portion 52B is a portion that contacts the stopper 70. A recess is formed at the end of the second plate portion 52, and the recessed portion becomes the first contact portion 52A, and the protruding portion becomes the second contact portion 52B.

[0028] The sensor 60 detects the opening and closing of the cover 12 by detecting the detected member 50. The sensor 60 is fixed to a frame (not shown) fixed to the case 11. The sensor 60 has a switch 61 and a lever 62. The sensor 60 will output a signal according to the ON / OFF of the switch 61. The sensor 60 outputs an ON signal when the switch 61 is pressed down. Also, the sensor 60 outputs an OFF signal when the switch 61 is not pressed down. When the cover 12 is in the closed state, the switch 61 is in the pressed-down state, and the sensor 60 outputs an ON signal. Also, when the cover 12 is in the open state, the switch 61 is not pressed down, and the sensor 60 outputs an OFF signal. The lever 62 is a part that contacts the detected member 50 (specifically, the first contact portion 52A) and presses down the switch 61. The lever 62 will turn the switch 61 ON / OFF according to the positional relationship with the detected member 50. Note that the sensor 60 does not necessarily have to have the lever 62. For example, the detected member 50 may be configured to directly contact the switch 61. Also, the sensor 60 may be configured to optically detect the detected member 50. For example, the sensor 60 includes a light emitting part and a light receiving part, and when the cover 12 is in the closed state, the detected member 50 is arranged between the light emitting part and the light receiving part to block the light of the light emitting part, and when the cover 12 is in the open state, the detected member 50 is removed from between the light emitting part and the light receiving part and the light receiving part receives the light of the light emitting part.

[0029] The stopper 70 is a member that restricts the position of the detected member 50. The stopper 70 is fixed to a frame (not shown) fixed to the case 11 together with the sensor 60. The stopper 70 restricts the cover 12 from further rotating in the closing direction by contacting the detected member 50 (specifically, the second contact portion 52B). In other words, the position of the cover 12 in the closed state is the position where the stopper 70 contacts the detected member 50.

[0030] Incidentally, as shown in Fig. 1A, the detected member 50 is disposed below the cover 12. While the rotation axis 12A of the cover 12 is disposed at the upper part of the cover 12, the detected member 50 is disposed at the lower part on the side opposite to the rotation axis 12A. Thereby, compared with the case where the detected member 50 is disposed at the upper part (the side closer to the rotation axis 12A) of the cover 12, the amount of movement of the detected member 50 when the cover 12 rotates in the opening direction becomes larger. For this reason, the sensor 60 can detect the open state of the cover 12 even when the amount of rotation when the closed cover 12 rotates in the opening direction is small. However, the detected member 50 does not necessarily have to be disposed below the cover 12. For example, it may be disposed at the upper part (the side closer to the rotation axis 12A) of the cover 12, or may be disposed at the central part in the vertical direction of the cover 12.

[0031] <Regarding cracking of the cover 12> The cover 12 is likely to crack at the part where the detected member 50 is attached. The reasons why the cover 12 is likely to crack at the part where the detected member 50 is attached include: (1) the strength of the cover 12 is reduced by the structure for fixing the detected member 50 (for example, holes for screwing), (2) when the cover 12 is impacted near the detected member 50 due to the structure for fixing the detected member 50, stress concentration is likely to occur near the structure (for example, holes for screwing), and (3) the cover 12 is made less flexible by the detected member 50, and when the cover 12 is impacted near the detected member 50, stress concentration is likely to occur at the periphery of the detected member 50 (the first plate portion 51).

[0032] In addition, when the detected member 50 is disposed above the cover 12 (on the same side as the rotation axis 12A), since the dimension from the detected member 50 to the free end (lower end) of the cover 12 is long, when the detected member 50 is subjected to an impact, the portion between the attached part of the detected member 50 and the lower end of the cover 12 bends, and thus the cover 12 has a structure that easily absorbs the impact. On the contrary, as shown in FIG. 1A, when the detected member 50 is disposed below the cover 12, since the dimension from the detected member 50 to the free end of the cover 12 is short, the cover 12 has a structure that hardly absorbs the impact due to its bending. As a result, the cover 12 is particularly likely to crack in the vicinity of the detected member 50. Therefore, when the detected member 50 is disposed below the cover 12, the reason why the cover 12 is particularly likely to crack at the portion where the detected member 50 is attached is particularly the reason (3) described above.

[0033] Further, as shown in FIGS. 3A and 3B, when the detected member 50 is in contact with the stopper 70 with the cover 12 in the closed state, since the cover 12 has a structure in which it cannot be displaced rearward when receiving an impact load from the outside, the cover 12 is particularly likely to crack in the vicinity of the detected member 50. Therefore, when the detected member 50 is in contact with the stopper 70 with the cover 12 in the closed state, the reason why the cover 12 is particularly likely to crack at the portion where the detected member 50 is attached is particularly the reason (3) described above.

[0034] If the cover 12 cracks, there is a risk that the light from the light source 23 will leak to the outside through the crack of the cover 12. Although the control unit 30 includes an interlock unit 32 (see FIG. 2), if the sensor 60 detects that the cover 12 is in the closed state, the interlock function does not work and light is irradiated from the light source 23. As a result, there is a risk that the light from the light source 23 will leak through the crack of the cover 12.

[0035] Therefore, in the present embodiment, a sheet member 80 is attached to the easily breakable portion of the cover 12, that is, around the detected member 50. Thereby, when the cover 12 breaks around the detected member 50, the sheet member 80 can block the crack of the cover 12, and light leakage from the crack can be suppressed. Hereinafter, the sheet member 80 of the present embodiment will be described.

[0036] <Regarding the sheet member 80> FIG. 5A is an explanatory diagram of the sheet member 80 attached to the cover 12. FIG. 5B is an explanatory diagram when the label 81 of the sheet member 80 is a warning label. Note that FIGS. 5A and 5B are explanatory diagrams of the sheet member 80 viewed from a direction perpendicular to the cover 12.

[0037] The sheet member 80 is a member that suppresses light from the light source 23 from leaking to the outside when the cover 12 breaks. The sheet member 80 is composed of a member having light-shielding properties with respect to the light irradiated from the light source 23. The sheet member 80 has an adhesive surface like a sticker and is attached to the cover 12.

[0038] The sheet member 80 is disposed around the detected member 50. As already described, since the cover 12 is easily broken around the detected member 50, by disposing the sheet member 80 around the detected member 50, the sheet member 80 is disposed at the easily breakable portion of the cover 12. Thereby, when the cover 12 breaks, light leakage from the crack can be suppressed.

[0039] Here, the "periphery of the detected member 50" means a range closer to the periphery of the detected member 50 (specifically, the first plate portion 51) than the dimensions of the detected member 50. Also, the "dimensions of the detected member 50" that define the periphery of the detected member 50 mean the dimensions of the first plate portion 51. Here, it means the dimension L0 (see FIG. 5A) along the diagonal line of the first plate portion 51, which is the longest dimension, but preferably means the dimension L1 (see FIG. 5A (and FIG. 3A)) of the long side of the first plate portion 51, and more preferably means the dimension L2 (see FIG. 5A (and FIG. 3B)) of the short side of the first plate portion 51. That is, the periphery of the detected member 50 means a range closer to the periphery of the detected member 50 (specifically, the first plate portion 51) than the dimension of the diagonal line of the first plate portion 51, but preferably means a range closer to the dimension of the long side of the first plate portion 51, and more preferably means a range closer to the dimension of the short side (here, the left-right direction dimension) of the first plate portion 51. When the sheet member 80 is disposed around the detected member 50, the distance (see D1 and D2 in FIG. 5A) between the sheet member 80 and the detected member 50 is shorter than the dimensions (see L0 to L2 in FIG. 5A) of the detected member 50.

[0040] It is sufficient that a part of the sheet member 80 is disposed around the detected member 50. When viewed from a direction perpendicular to the cover 12, the sheet member 80 may not overlap with the detected member 50, or may partially overlap with the detected member 50 (described later; see FIGS. 7A and 7B). However, as shown in FIG. 5A, when the sheet member 80 is arranged so as not to overlap with the detected member 50, compared with the case where the sheet member 80 of the same size is arranged so as to overlap with the detected member 50, the sheet member 80 can be arranged so as to block a wider range outside the detected member 50, so that light leakage can be more suppressed. Also, in the region where the sheet member 80 overlaps with the detected member 50, even if the cover 12 is cracked, the light is shielded by the detected member 50, so it is acceptable even if the sheet member 80 is not arranged. For this reason, when viewed from a direction perpendicular to the surface of the cover 12, it is desirable that the sheet member 80 is arranged so as not to overlap with the detected member 50.

[0041] Incidentally, as already described, the rotation axis 12A of the cover 12 is disposed at the upper part of the cover 12, while the detected member 50 is disposed at the lower part on the side opposite to the rotation axis 12A. Thereby, even if the amount of rotation when the cover 12 in the closed state rotates in the opening direction is small, it becomes easier for the sensor 60 to detect the open state of the cover 12. On the other hand, when the detected member 50 is disposed at the lower part of the cover 12, since it becomes a structure in which it is difficult to absorb the impact due to the deflection of the cover 12, there is a risk that the cover 12 is particularly likely to crack in the vicinity of the detected member 50. For this reason, the configuration in which the sheet member 80 is attached around the detected member 50 is particularly effective in the case of a configuration in which the rotation axis 12A of the cover 12 is disposed at the upper part of the cover 12 and the detected member 50 is disposed at the lower part on the side opposite to the rotation axis 12A. However, even when the detected member 50 is not disposed at the lower part of the cover 12, a configuration in which the sheet member 80 is attached around the detected member 50 may be adopted.

[0042] Also, as already described, when the detected member 50 is in contact with the stopper 70 in a state where the switch 61 of the sensor 60 is depressed when the cover 12 is in the closed state, since it is a structure in which the cover 12 cannot be displaced rearward when the cover 12 receives an impact load from the outside, it becomes a structure in which the cover 12 is particularly likely to crack in the vicinity of the detected member 50. For this reason, the configuration in which the sheet member 80 is attached around the detected member 50 is particularly effective when the detected member 50 is in contact with the stopper 70 in a state where the switch 61 of the sensor 60 is depressed when the cover 12 is in the closed state. However, even in the case of a configuration in which the detected member 50 is not in contact with the stopper 70, a configuration in which the sheet member 80 is attached around the detected member 50 may be adopted.

[0043] As shown in FIGS. 5A and 5B, a plurality (here, three) of labels 81 are displayed on the sheet member 80. That is, a plurality of labels 81 are connected to form one sheet member 80. As a result, compared with the case where the sheet member 80 is configured for each label 81, since one sheet member 80 becomes larger, light leakage can be further suppressed. Also, when each label 81 is configured on a separate sheet member 80, there is a risk that light may leak from the gaps formed between the labels 81 (between the sheet members 80), whereas when a plurality of labels 81 are connected to one sheet member 80 as shown in FIGS. 5A and 5B, it is possible to prevent light from leaking between the labels 81.

[0044] As shown in FIG. 5B, a plurality of warning labels are displayed on the sheet member 80. Here, the sheet member 80 has a warning label 81A regarding UV light and warning labels 81B and 81C regarding two types of pinching.

[0045] A warning label is a label indicating information on the safe use of the processing apparatus 1. For this reason, warning labels include not only labels indicating warnings but also labels indicating dangers, cautions, announcements, safety instructions, safety procedures, and prohibited actions. Also, warning labels include graphic symbols (symbols indicating warnings and cautions, symbols indicating contents, etc.), signal words (characters such as danger, warning, caution), messages (character information such as warning texts), and the like. When a plurality of warning labels are displayed on one sheet, it is desirable that each warning label be separated by a black frame so that each warning label can be recognized separately. Warning labels are preferably compliant with international standards (e.g., ISO 3864-1 to 3, ISO 7010, etc.) and national standards (e.g., JIS B 9700, JIS Z 9101, ANSI Z535.1 to 4, etc.).

[0046] Since the processing apparatus 1 that performs processing using light includes a light source 23 that irradiates strong light such as laser light, it may be necessary to display a warning label 81A regarding light on the processing apparatus 1. In such a case, by attaching the sheet member 80 on which the warning label 81A regarding light is displayed around the detected member 50, the sheet member 80 can have both a function of suppressing light leakage and a warning function for the user.

[0047] In addition, when the processing machine main body 20 is arranged inside the processing apparatus 1, it may be necessary to warn the operator that his / her hand may be pinched. Also, when the processing apparatus 1 includes a cover 12 that opens and closes, it may be necessary to warn the operator that his / her hand may be pinched. In such a case, by attaching the sheet member 80 on which the warning labels 81B and 81C regarding pinching are displayed around the detected member 50, the sheet member 80 can have both a function of suppressing light leakage and a warning function for the user.

[0048] Note that the label 81 displayed on the sheet member 80 is not limited to a warning label, and other types of labels may also be used. For example, a label explaining how to handle the processing apparatus 1 may be displayed on the sheet member 80. Also, a plurality of labels 81 do not have to be displayed on the sheet member 80, and only one type of label 81 may be displayed. Also, no label 81 may be displayed on the sheet member 80.

[0049] As shown in FIGS. 5A and 5B, the sheet member 80 is configured in an L shape (in other words, the sheet member 80 has an L-shaped display area). When the sheet member 80 is in an L shape in this way, the sheet member 80 can be disposed in the region inside (left side) of the detected member 50 in the left-right direction and in the region between the detected member 50 and the periphery of the cover 12 (the region below the detected member 50). Note that since relatively strong light may leak in the region at the center in the left-right direction of the cover 12 when the cover 12 cracks, it is considered effective to block the region inside the detected member 50 in the left-right direction with the sheet member 80. In addition, the region between the detected member 50 and the periphery of the cover 12 is a site where it is difficult to absorb an impact due to the bending of the cover 12 when the impact is received, so it is a site that is relatively likely to crack. Therefore, it is considered effective to block the region between the detected member 50 and the periphery of the cover 12 with the sheet member 80. For this reason, while configuring the sheet member 80 in an L shape, it is particularly effective to dispose the sheet member 80 in the region inside the detected member 50 in the left-right direction and in the region between the detected member 50 and the periphery of the cover 12 (the region below the detected member 50).

[0050] FIGS. 6A and 6B are explanatory views of the configuration near the lower right corner of the cover 12. FIG. 6A is an explanatory view of the support portion 11A that supports the back surface of the cover 12. FIG. 6B is an explanatory view of the state when the cover 12 is opened and closed. The hatched region in the figure indicates the region where the support portion 11A that supports the periphery of the closed cover 12 and the back surface of the cover 12 are in contact. In other words, the hatched region indicates the region where the back surface of the cover 12 is supported by the support portion 11A.

[0051] As described above, the case 11 has a support portion 11A that supports the periphery of the cover 12 in the closed state (see FIG. 1B). As shown in FIG. 6A, the central portion in the left-right direction of the lower edge of the cover 12 is supported by the support portion 11A when in the closed state. On the other hand, the end portions in the left-right direction of the lower edge of the cover 12 are not supported by the support portion 11A when in the closed state. As shown in FIG. 6B, the end portions in the left-right direction of the lower edge of the cover 12 (the portions not supported by the support portion 11A) are set as an operation region 12B for opening and closing the cover 12.

[0052] When the opening and closing operation of the cover 12 is performed as shown in FIG. 6B, the cover 12 receives a force in the operation region 12B, and as a result, the cover 12 may crack. That is, the region between the detected member 50 and the operation region 12B becomes a region where the cover 12 is likely to crack. Therefore, as shown in FIGS. 6A and 6B, it is desirable that the sheet member 80 be disposed between the detected member 50 and the operation region 12B. Thereby, when the cover 12 cracks due to the opening and closing operation of the cover 12, light leakage from the crack can be suppressed.

[0053] <Modification Example> FIGS. 7A to 7F are explanatory views of the sheet member 80 of the modification example.

[0054] The sheet member 80 shown in FIG. 7A overlaps with a part of the detected member 50 when viewed from a direction perpendicular to the cover 12. Also, the sheet member 80 shown in FIG. 7B overlaps with all of the detected member 50 when viewed from a direction perpendicular to the cover 12. As shown in FIGS. 7A and 7B, even when the sheet member 80 is arranged so as to partially overlap with the detected member 50, at least a part of the sheet member 80 can be arranged around the detected member 50. Therefore, as shown in FIGS. 7A and 7B, when viewed from a direction perpendicular to the cover 12, the sheet member 80 may be arranged so as to partially overlap with the detected member 50.

[0055] The sheet member 80 shown in FIG. 7C is disposed in the region between the member 50 to be detected and the periphery of the cover 12 (the region below the member 50 to be detected) when viewed from a direction perpendicular to the cover 12. Since the region between the member 50 to be detected and the periphery of the cover 12 is a portion that is difficult to absorb impact due to the deflection of the cover 12 when receiving an impact, it is a portion that is relatively easy to crack. Therefore, as shown in FIG. 7C, it is considered effective to block the region between the member 50 to be detected and the periphery of the cover 12 with the sheet member 80. Further, the sheet member 80 shown in FIG. 7C is disposed between the member 50 to be detected and the operation region 12B when viewed from a direction perpendicular to the cover 12. Thereby, when the cover 12 cracks due to the opening / closing operation of the cover 12, light leakage from the crack can be suppressed. As shown in FIG. 7C, when viewed from a direction perpendicular to the cover 12, the sheet member 80 may not be disposed in the region inside the member 50 to be detected in the left-right direction.

[0056] The sheet member 80 shown in FIG. 7D is disposed in the region inside the member 50 to be detected in the left-right direction when viewed from a direction perpendicular to the cover 12. Since there is a possibility that relatively strong light may leak when the cover 12 cracks in the region at the center in the left-right direction of the cover 12, as shown in FIG. 7D, it is considered effective to block the region inside the member 50 to be detected in the left-right direction with the sheet member 80. As shown in FIG. 7D, when viewed from a direction perpendicular to the cover 12, the sheet member 80 may not be disposed in the region between the member 50 to be detected and the periphery of the cover 12 (the region below the member 50 to be detected).

[0057] In FIG. 7E, two sheet members 80 are disposed around the member 50 to be detected. As shown in FIG. 7E, even when a plurality of sheet members 80 are disposed around the member 50 to be detected, since each sheet member 80 is disposed around the member 50 to be detected, when the cover 12 cracks, light leakage from the crack can be suppressed. When a plurality of sheet members 80 are attached to the cover 12, at least one sheet member 80 may be disposed around the member 50 to be detected. Further, as shown in FIG. 7E, not all of the plurality of labels need to be connected.

[0058] The sheet member 80 shown in FIG. 7F does not display a label. However, if the sheet member 80 shown in FIG. 7F has light-shielding properties and is arranged around the detected member 50, when the cover 12 is cracked, light leakage from the crack can be suppressed.

[0059] In any of the cases of FIGS. 7A to 7F, the sheet member 80 has light-shielding properties and the sheet member 80 is attached to the cover 12 around the detected member 50. For this reason, in any of the cases of FIGS. 7A to 7F, the sheet member 80 is attached to the easily cracked part of the cover 12, and when the cover 12 is cracked, the sheet member 80 can block the crack of the cover 12, and light leakage from the crack can be suppressed.

[0060] <Parentheses> The above-described processing device 1 includes a light source 23 that irradiates light, a case 11 that houses the light source 23, a cover 12 that is provided on the case 11 so as to be openable and closable and suppresses the transmission of light irradiated by the light source 23, a detected member 50 attached to the cover 12, and a sensor 60 for detecting the opening and closing of the cover 12 by detecting the detected member 50. In the case of the processing device 1 having such a configuration, the cover 12 is likely to crack at the part where the detected member 50 is attached. Therefore, the above-described processing device 1 includes a sheet member 80 that is attached to the cover 12 around the detected member 50 and has light-shielding properties with respect to the light irradiated by the light source 23. Thereby, when the cover 12 cracks around the detected member 50, the sheet member 80 can block the crack of the cover 12, and light leakage from the crack can be suppressed.

[0061] ===Other Embodiments=== The above embodiments are presented as examples and do not limit the scope of the invention. The above configurations can be implemented in appropriate combinations, and various omissions, replacements, and changes can be made without departing from the gist of the invention. The above embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and its equivalent scope.

Description of Signs

[0062] 1 Processing device, 11 Case, 11A Support part, 12 Cover, 12A Rotation axis, 12B Operation area, 20 Machine tool body, 21 Head, 22 Moving unit, 221 Carriage unit, 221A Carriage, 221B Carriage motor, 222 Table unit, 222A Table, 222B Table motor, 23 Light source, 30 Control unit, 31 Processing control unit, 32 Interlock unit, 40 Opening / closing detection unit, 50 Detected member, 51 First plate part, 52 Second plate part, 52A First contact part, 52B Second contact part, 60 Sensor, 61 Switch, 62 Lever, 70 Stopper, 80 Sheet member, 81 Label, 81A~81C Warning labels

Claims

1. A light source that irradiates light, A case that houses the light source, A cover that is provided on the case so as to be openable and closable and suppresses the transmission of the light, A detected member attached to the cover, A sensor for detecting the opening and closing of the cover by detecting the detected member, A sheet member that is attached to the cover around the detected member and has light-shielding properties with respect to the light, A processing apparatus comprising the above.

2. The processing apparatus according to claim 1, The rotation axis of the cover is disposed at the upper part of the cover so that the cover is in a closed state by its own weight, The detected member is disposed at the lower part of the cover.

3. The processing apparatus according to claim 2, The central portion in the left-right direction of the lower edge of the cover is supported by a support portion when the cover is in the closed state, An operation region for opening and closing the cover is set at the left and right ends in the left-right direction of the lower edge of the cover, The sheet member is disposed between the detected member and the operation region.

4. The processing apparatus according to any one of claims 1 to 3, The sensor has a switch, When the cover is in the closed state, the detected member is in contact with a stopper with the switch being depressed.

5. The processing apparatus according to any one of claims 1 to 3, When viewed from a direction perpendicular to the surface of the cover, the sheet member is disposed so as not to overlap the detected member.

6. The processing apparatus according to any one of claims 1 to 3, A plurality of labels are displayed on the sheet member.

7. The processing apparatus according to claim 6, A plurality of warning labels including a warning label regarding the light are displayed on the sheet member.

8. The processing apparatus according to any one of claims 1 to 3, The sheet member, Is configured in an L shape, And is disposed in a region inside the left-right direction from the detected member and a region between the detected member and the periphery of the cover.

Images