Sheet type medium processing device

Abstract

The utility model relates to the technical field of slice type medium processing, in particular to a slice type medium processing device. The slice type medium processing device comprises a shell, an inner frame and an upper cover, wherein the shell is provided with a first opening; the inner frame is detachably mounted in the shell through the first opening, and the inner frame comprises a containing cavity with a second opening; the upper cover is provided with a first pivot joint part, the inner frame is provided with a second pivot joint part, the first pivot joint part is one of an insertion hole and an insertion shaft, the second pivot joint part is the other one of the insertion hole and the insertion shaft, the insertion shaft is connected with the insertion hole in an inserted mode, and the upper cover can rotate around the axis of the insertion shaft relative to the inner frame. The opening position is used for opening the second opening, and the closing position is used for closing the second opening; the shell is provided with a blocking part, and when the inner frame is installed in the shell, the blocking part is located on a moving path where the first pivoting part is separated from the second pivoting part so as to prevent the inserting shaft from being separated from the inserting hole. According to the slice type medium processing device, the installation stability of the upper cover is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sheet media processing technical field, especially a sheet media processing device. BACKGROUND

[0002] The existing sheet media processing device such as printer, scanner usually includes a shell and an upper cover, the shell is provided with an upper opening, and the upper cover is pivotally connected with the shell for opening or closing the upper opening. In order to facilitate the pivotal connection of the upper cover with the shell, the related art usually provides one of the shell and the upper cover with a shaft, and the other one with a hole, so that the upper cover can be installed on the shell by inserting the shaft into the hole, and the upper cover can be rotated around the axis of the shaft relative to the shell, so as to open or close the upper opening. However, when the sheet media processing device is accidentally dropped during transportation or use, the shaft is prone to disengage from the hole, resulting in separation of the upper cover from the shell. Therefore, the sheet media processing device provided by the related art has the problem of unstable installation of the upper cover with the shell. SUMMARY

[0003] The utility model aims at providing a sheet media processing device to improve the installation stability of the upper cover.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] A sheet media processing device, comprising a shell, an inner frame and an upper cover, the shell is provided with a first opening; the inner frame is detachably installed in the shell through the first opening, and the inner frame comprises a receiving cavity with a second opening; the upper cover is provided with a first pivot part, the inner frame is provided with a second pivot part, the first pivot part is one of a hole and a shaft, the second pivot part is the other one of the hole and the shaft, the shaft is inserted into the hole, the upper cover can rotate around the axis of the shaft relative to the inner frame, and has an opening position for opening the second opening and a closing position for closing the second opening; the shell is provided with a blocking part, when the inner frame is installed in the shell, the blocking part is located on the moving path of the first pivot part away from the second pivot part, so as to prevent the shaft from disengaging from the hole.

[0006] As an option, the upper cover comprises a cover body and a connecting arm, a first end of the connecting arm is fixedly connected with the cover body, the first pivot joint is arranged at a second end of the connecting arm, the cover body can rotate with the connecting arm around an axis of the insertion shaft, when the upper cover is in the closed position, the cover body closes the second opening, along a direction in which the first pivot joint is separated from the second pivot joint, the blocking portion is located downstream of the connecting arm and opposite the second end of the connecting arm, a spacing between the blocking portion and the second end of the connecting arm is less than an insertion depth of the insertion shaft and the insertion hole.

[0007] As an option, the inner frame comprises a side wall for forming the accommodation cavity, the connecting arm is located at a side of the side wall away from the accommodation cavity, and when the inner frame is installed in the shell, the blocking portion is spaced apart from the side wall opposite the second end of the connecting arm, wherein the blocking portion is formed by an inner wall of the shell or the blocking portion is connected with the inner wall of the shell.

[0008] As an option, the inner wall of the shell comprises a first inner wall, the blocking portion is connected with the first inner wall, the inner frame further comprises a connecting plate, the connecting plate is connected at an angle with the side wall, the connecting plate is provided with a notch, when the inner frame is installed in the shell, the side wall and the first inner wall are opposite and spaced apart along an axial direction of the insertion shaft, the connecting plate is located between the side wall and the first inner wall, and the blocking portion is clamped with the notch.

[0009] As an option, when the blocking portion is connected with the inner wall of the shell, the shell comprises a reinforcing plate, the reinforcing plate is connected at an angle with the inner wall of the shell, the reinforcing plate is used for supporting the inner frame, and a lower end of the blocking portion is connected with the reinforcing plate.

[0010] As an option, the sheet medium processing device further comprises a fastener, when the inner frame is installed in the shell, the fastener is screwed with the inner frame from below the reinforcing plate through the reinforcing plate.

[0011] As an option, the inner wall of the shell comprises a first inner wall and a second inner wall connected at an angle, the blocking portion comprises a first plate and a second plate connected at an angle, a first end of the first plate is connected with the first inner wall, a first end of the second plate is connected with a second end of the first plate, and a second end of the second plate is connected with the second inner wall, when the inner frame is installed in the shell, the second plate is opposite the second end of the connecting arm along an axial direction of the insertion shaft, and is used for preventing the insertion shaft from being separated from the insertion hole.

[0012] As an option, the shell comprises a middle shell and a bottom shell, the first opening is arranged on the middle shell, the inner frame is detachably mounted on the middle shell through the first opening, the blocking part is arranged on the inner wall of the middle shell, and the middle shell is also provided with a third opening opposite to the first opening; the bottom shell is detachably connected with the middle shell, when the inner frame is mounted on the middle shell and the bottom shell is detached from the middle shell, the bottom of the inner frame is exposed through the third opening, and when the inner frame is mounted on the middle shell and the bottom shell is connected with the middle shell, the bottom shell closes the third opening.

[0013] As an option, the sheet medium processing device further comprises a main control board, the main control board is mounted on the bottom of the inner frame, when the inner frame is mounted on the middle shell and the bottom shell is detached from the middle shell, the main control board is exposed, and when the inner frame is mounted on the middle shell and the bottom shell is connected with the middle shell, the bottom shell shields the main control board.

[0014] As an option, the sheet medium processing device further comprises a printing assembly and a cutter, the accommodating cavity is used for accommodating a printing medium; the printing assembly comprises a printing head and a printing rubber roller, the cutter comprises a static blade assembly and a dynamic blade assembly, the printing head and the dynamic blade assembly are both mounted on the inner frame, the printing rubber roller and the static blade assembly are both mounted on the upper cover, when the upper cover is located at the closed position, the printing head cooperates with the printing rubber roller to print the printing medium, and the dynamic blade assembly cooperates with the static blade assembly to cut off the printing medium; when the upper cover is located at the open position, the printing head is separated from the printing rubber roller, and the dynamic blade assembly is separated from the static blade assembly.

[0015] The sheet medium processing device has the advantages that:

[0016] The utility model provides a kind of sheet media processing device, which comprises a shell, an inner frame and an upper cover. The shell has a first opening. The inner frame is detachably mounted in the shell through the first opening. The inner frame includes a receiving cavity with a second opening. The upper cover has a first pivot connection portion, and the inner frame has a second pivot connection portion. The first pivot connection portion is one of a socket and a shaft, and the second pivot connection portion is the other one of the socket and the shaft. The shaft is inserted into the socket. The upper cover can rotate around the axis of the shaft relative to the inner frame. The upper cover has an open position to open the second opening and a closed position to close the second opening. The shell has a blocking portion. When the inner frame is mounted in the shell, the blocking portion is located on the moving path of the first pivot connection portion away from the second pivot connection portion to prevent the shaft from being separated from the socket. The sheet media processing device provided by the utility model can install the upper cover on the inner frame through the insertion of the shaft and the socket, and then install the inner frame in the shell. The blocking portion is located on the moving path of the first pivot connection portion away from the second pivot connection portion, which prevents the shaft from being separated from the socket, improves the installation stability of the upper cover, and allows the inner frame to be detachably mounted in the shell for easy cleaning operation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the sheet media processing device provided by the utility model when the upper cover is in the open position.

[0018] Figure 2 is a partial structural exploded view of the sheet media processing device provided by the utility model.

[0019] Figure 3 is Figure 1 is an enlarged view of structure at position A in FIG.

[0020] Figure 4 is a structural exploded view of the sheet media processing device provided by the utility model.

[0021] Figure 5 is Figure 4 is an enlarged view of structure at position B in FIG.

[0022] Figure 6 is a structural schematic diagram of the middle shell in the sheet media processing device provided by the utility model.

[0023] In the drawings:

[0024] 1, housing; 11, middle shell; 111, first opening; 112, third opening; 12, bottom shell; 13, blocking part; 131, first plate; 132, second plate; 14, first inner wall; 15, reinforcing plate; 16, support plate; 17, second inner wall; 2, inner frame; 21, side wall; 22, connecting plate; 221, notch; 23, accommodating cavity; 24, second pivot part; 3, upper cover; 31, cover body; 32, connecting arm; 321, first pivot part; 4, fastener; 61, printing rubber roller; 7, cutter; 71, static blade assembly; 72, dynamic blade assembly; 8, cutter cover. DETAILED DESCRIPTION

[0025] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments.

[0026] In the description of the utility model, unless there is clear definition and limitation, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0027] In the utility model, unless there is clear definition and limitation, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0029] Figure 1It is the structure schematic view of the sheet medium processing device in the open position of the upper cover 3 provided by the embodiment of the utility model. Figure 2 It is the partial structure exploded view of the sheet medium processing device provided by the embodiment of the utility model. Figure 3 It is Figure 1 The structure enlarged view of A in the figure. Figure 4 It is the structure exploded view of the sheet medium processing device provided by the embodiment of the utility model. Figure 5 It is Figure 4 The structure enlarged view of B in the figure. Figure 6 It is the structure schematic view of the middle shell 11 in the sheet medium processing device provided by the embodiment of the utility model. Figures 1 to 6 As shown in the figure, the embodiment provides a sheet medium processing device, which comprises a shell 1, an inner frame 2 and an upper cover 3, wherein the shell 1 is provided with a first opening 111; the inner frame 2 is detachably installed in the shell 1 through the first opening 111, and the inner frame 2 comprises a containing cavity 23 with a second opening; the upper cover 3 is provided with a first pivot joint 321, and the inner frame 2 is provided with a second pivot joint 24, the first pivot joint 321 is one of a socket and a shaft, the second pivot joint 24 is the other one of the socket and the shaft, the shaft is inserted into the socket, the upper cover 3 can rotate relative to the inner frame 2 around the axis of the shaft, and has an open position for opening the second opening and a closed position for closing the second opening; the shell 1 is provided with a blocking part 13, when the inner frame 2 is installed in the shell 1, the blocking part 13 is located on the moving path of the first pivot joint 321 away from the second pivot joint 24, so as to prevent the shaft from being separated from the socket. The sheet medium processing device provided by the embodiment, after the upper cover 3 is installed in the inner frame 2 through the shaft inserted into the socket, and then the inner frame 2 is installed in the shell 1, the blocking part 13 can be located on the moving path of the first pivot joint 321 away from the second pivot joint 24, thereby preventing the shaft from being separated from the socket, improving the installation stability of the upper cover 3, and the inner frame 2 is detachably installed in the shell 1, facilitating the cleaning operation of the inner frame 2.

[0030] In the embodiment, as Figure 1 , Figure 2 and Figure 4As shown, the sheet-like medium processing device further comprises a printing assembly and a cutter 7, and the accommodating cavity 23 is used for accommodating the printing medium; the printing assembly comprises a printing head and a printing rubber roller 61, and the cutter 7 comprises a static blade assembly 71 and a dynamic blade assembly 72; the printing head and the dynamic blade assembly 72 are both mounted on the inner frame 2, and the printing rubber roller 61 and the static blade assembly 71 are both mounted on the upper cover 3; when the upper cover 3 is located at the closed position, the printing head cooperates with the printing rubber roller 61 to print the printing medium, and the dynamic blade assembly 72 cooperates with the static blade assembly 71 to cut the printing medium; when the upper cover 3 is located at the open position, the printing head is separated from the printing rubber roller 61, and the dynamic blade assembly 72 is separated from the static blade assembly 71. The above arrangement realizes the modular installation of the printing assembly, the cutter 7 and the inner frame 2, and improves the installation efficiency and the overall structural strength of the sheet-like medium processing device. Preferably, the accommodating cavity 23 is used for accommodating the printing medium in a roll shape or accommodating the printing medium folded into a stack. Preferably, the sheet-like medium processing device further comprises a cutter cover 8, which is detachably connected with the shell 1; when the cutter cover 8 is connected with the shell 1 and the upper cover 3 is located at the closed position, the cutter cover 8 and the upper cover 3 jointly close the first opening 111, and an outlet (not shown in the figure) for the printing medium to output is formed between the cutter cover 8 and the upper cover 3; when the cutter cover 8 is detached from the shell 1 and the upper cover 3 is located at the open position, the cutter cover 8 and the upper cover 3 jointly open the first opening 111.

[0031] In the embodiment, as shown in the figure, Figures 1 to 3 The upper cover 3 comprises a cover body 31 and a connecting arm 32, the first end of the connecting arm 32 is fixedly connected with the cover body 31, the first pivot joint 321 is arranged at the second end of the connecting arm 32, and the cover body 31 can rotate with the connecting arm 32 around the axis of the plug shaft; when the upper cover 3 is located at the closed position, the cover body 31 closes the second opening, and the blocking part 13 is located downstream of the connecting arm 32 and opposite to the second end of the connecting arm 32 in the direction that the first pivot joint 321 is separated from the second pivot joint 24, and the spacing between the blocking part 13 and the second end of the connecting arm 32 is less than the plug-in depth of the plug shaft and the plug hole. By arranging the blocking part 13 on the moving path of the first pivot joint 321 separated from the second pivot joint 24, the plug shaft and the plug hole are prevented from being separated, and since the blocking part 13 is opposite to the second end of the connecting arm 32 and the first pivot joint 321 is arranged at the second end of the connecting arm 32, the reliability of the blocking part 13 in preventing the plug shaft and the plug hole from being separated is further improved. In the embodiment, by arranging the connecting arm 32, the rotating radius of the cover body 31 is lengthened, the cover body 31 is prevented from interfering with the inner frame 2 during rotation, and the rotating range of the cover body 31 is increased. Preferably, the connecting arm 32 is arranged in an L shape. In the embodiment, the first pivot joint 321 is the plug shaft, the second pivot joint 24 is the plug hole, and the plug shaft, the connecting arm 32 and the cover body 31 are integrally formed.

[0032] Optionally, in the embodiment, as shown in the figure, Figures 1 to 3As shown in the figure, the inner frame 2 comprises a side wall 21 for forming the accommodating cavity 23, the connecting arm 32 is located on the side of the side wall 21 away from the accommodating cavity 23, and the blocking part 13 is spaced apart from the side wall 21 when the inner frame 2 is installed in the shell 1, and the second end of the connecting arm 32 is located between the side wall 21 and the blocking part 13, wherein the blocking part 13 is formed by the inner wall of the shell 1 or the blocking part 13 is connected with the inner wall of the shell 1. The above arrangement makes the connecting arm 32 not extend into the accommodating cavity 23, thereby improving the operation stability of the sheet medium processing device. Optionally, in the embodiment, the blocking part 13 is connected with the inner wall of the shell 1. In other embodiments, the blocking part 13 is formed by the inner wall of the shell 1. Preferably, the upper cover 3 comprises two connecting arms 32, each of the two connecting arms 32 is provided with a first pivot part 321, the two first pivot parts 321 are coaxially arranged, the inner frame 2 is provided with two second pivot parts 24, the two second pivot parts 24 correspond to the two first pivot parts 321 one by one, the inner frame 2 comprises two side walls 21 which are oppositely and spaced apart along the axial direction of the insertion shaft, the shell 1 is provided with two blocking parts 13, the two blocking parts 13 are oppositely and spaced apart corresponding to the two side walls 21 when the inner frame 2 is installed in the shell 1, and the two connecting arms 32 are respectively located between the two side walls 21 and the corresponding blocking parts 13.

[0033] In the embodiment, as shown in the figure, Figures 1 to 3 the inner wall of the shell 1 comprises a first inner wall 14, the blocking part 13 is connected with the first inner wall 14, and the inner frame 2 further comprises a connecting plate 22, the connecting plate 22 is connected with the side wall 21 at an angle, the connecting plate 22 is provided with a notch 221, the side wall 21 and the first inner wall 14 are oppositely and spaced apart along the axial direction of the insertion shaft when the inner frame 2 is installed in the shell 1, the connecting plate 22 is located between the side wall 21 and the first inner wall 14, and the blocking part 13 is clamped with the notch 221. The clamping cooperation of the notch 221 and the blocking part 13 improves the positioning accuracy of the inner frame 2 and the shell 1, and the arrangement of the connecting plate 22 increases the overall structural strength of the inner frame 2. Preferably, along the axial direction of the insertion shaft, the size of the connecting plate 22 is adapted to the distance between the side wall 21 and the first inner wall 14, thereby reducing the risk of foreign matter falling between the side wall 21 and the first inner wall 14 to the inner frame 2 and the shell 1.

[0034] In the embodiment, as shown in the figure, Figures 4 to 6 the shell 1 comprises a reinforcing plate 15, the reinforcing plate 15 is connected with the inner wall of the shell 1 at an angle, the reinforcing plate 15 is used for supporting the inner frame 2, and the lower end of the blocking part 13 is connected with the reinforcing plate 15. The above arrangement not only improves the support stability of the shell 1 to the inner frame 2, but also improves the structural strength of the blocking part 13. Preferably, the shell 1 further comprises a support plate 16, the support plate 16 is connected with the inner wall of the shell 1 at an angle, and the support plate 16 and the reinforcing plate 15 are used for jointly supporting the inner frame 2, thereby further improving the support stability of the shell 1 to the inner frame 2.

[0035] In the present embodiment, as shown in Figure 4 and Figure 5 The sheet medium processing device further comprises a fastener 4, which is screwed through the reinforcing plate 15 from below the reinforcing plate 15 to the inner frame 2 when the inner frame 2 is installed in the shell 1. The above arrangement improves the stability after the inner frame 2 is installed in the shell 1, and the operating part of the fastener 4 is hidden below the reinforcing plate 15, avoiding the user from touching the fastener 4 when opening the upper cover 3 and replacing the printing medium, improving the user experience. Optionally, the fastener 4 is a screw or a bolt.

[0036] As shown in Figures 3 to 6 The inner wall of the shell 1 further comprises a second inner wall 17 connected at an angle to the first inner wall 14, and the blocking part 13 comprises a first plate 131 and a second plate 132 connected at an angle, the first end of the first plate 131 is connected to the first inner wall 14, the first end of the second plate 132 is connected to the second end of the first plate 131, and the second end of the second plate 132 is connected to the second inner wall 17. When the inner frame 2 is installed in the shell 1, the second plate 132 is opposite to the second end of the connecting arm 32 along the axial direction of the insertion shaft, for preventing the insertion shaft from being detached from the insertion hole. The structural form of the blocking part 13 effectively improves the structural strength of the blocking part 13, further improving the installation stability of the upper cover 3.

[0037] In the present embodiment, as shown in Figure 1 and Figure 4 The shell 1 comprises a middle shell 11 and a bottom shell 12, the first opening 111 is provided in the middle shell 11, the inner frame 2 is detachably installed in the middle shell 11 through the first opening 111, the blocking part 13 is provided in the inner wall of the middle shell 11, and the middle shell 11 is further provided with a third opening 112 opposite to the first opening 111; the bottom shell 12 is detachably connected to the middle shell 11, when the inner frame 2 is installed in the middle shell 11 and the bottom shell 12 is detached from the middle shell 11, the bottom of the inner frame 2 is exposed through the third opening 112, and when the inner frame 2 is installed in the middle shell 11 and the bottom shell 12 is connected to the middle shell 11, the bottom shell 12 closes the third opening 112. The above arrangement allows the space between the inner frame 2 and the shell 1 to be cleaned and other maintenance operations by detaching the bottom shell 12. In other embodiments, the blocking part 13 is provided in the inner wall of the bottom shell 12, and when the inner frame 2 is installed in the middle shell 11 and the bottom shell 12 is installed in the middle shell 11, the blocking part 13 is located in the movement path of the first pivot part 321 away from the second pivot part 24.

[0038] In the embodiment, the sheet medium processing device further comprises a main control board (not shown in the figure) installed at the bottom of the inner frame 2, which is exposed when the inner frame 2 is installed in the middle shell 11 and the bottom shell 12 is detached from the middle shell 11, and is shielded by the bottom shell 12 when the inner frame 2 is installed in the middle shell 11 and the bottom shell 12 is connected with the middle shell 11. The above arrangement enables the maintenance of the main control board to be completed by detaching the bottom shell 12, without the need to detach the inner frame 2 from the outer shell 1, thereby improving the operability of the maintenance of the main control board.

[0039] Obviously, the above embodiments of the present application are merely exemplary and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A sheet medium processing apparatus characterized by comprising: The application relates to a portable electronic device, which comprises a shell (1), an inner frame (2) and an upper cover (3), the shell (1) is provided with a first opening (111), the inner frame (2) is detachably installed in the shell (1) through the first opening (111), the inner frame (2) comprises a containing cavity (23) provided with a second opening, the upper cover (3) is provided with a first pivot joint (321), the inner frame (2) is provided with a second pivot joint (24), the first pivot joint (321) is one of a socket and a shaft, the second pivot joint (24) is the other one of the socket and the shaft, the shaft is inserted into the socket, the upper cover (3) can rotate relative to the inner frame (2) around the axis of the shaft, has an opening position for opening the second opening and a closing position for closing the second opening, the shell (1) is provided with a blocking part (13), when the inner frame (2) is installed in the shell (1), the blocking part (13) is located on the moving path of the first pivot joint (321) away from the second pivot joint (24) to prevent the shaft from being separated from the socket.

2. The sheet media handling apparatus according to claim 1, wherein, The upper cover (3) comprises a cover body (31) and a connecting arm (32), the first end of the connecting arm (32) is fixedly connected with the cover body (31), the first pivot joint (321) is arranged at the second end of the connecting arm (32), the cover body (31) can rotate with the connecting arm (32) around the axis of the shaft, when the upper cover (3) is located at the closing position, the cover body (31) closes the second opening, in the direction of the first pivot joint (321) away from the second pivot joint (24), the blocking part (13) is located downstream of the connecting arm (32) and opposite to the second end of the connecting arm (32), the distance between the blocking part (13) and the second end of the connecting arm (32) is smaller than the insertion depth of the shaft and the socket.

3. The sheet media handling apparatus according to claim 2, wherein, The inner frame (2) comprises a side wall (21) for forming the containing cavity (23), the connecting arm (32) is located on the side of the side wall (21) away from the containing cavity (23), and when the inner frame (2) is installed in the shell (1), the blocking part (13) is arranged opposite to the side wall (21) with a spacing, the second end of the connecting arm (32) is located between the side wall (21) and the blocking part (13), wherein the blocking part (13) is formed by an inner wall of the shell (1) or the blocking part (13) is connected with the inner wall of the shell (1).

4. The sheet media handling apparatus according to claim 3, wherein, The inner wall of the shell (1) comprises a first inner wall (14), and the blocking part (13) is connected with the first inner wall (14); the inner frame (2) further comprises a connecting plate (22), the connecting plate (22) is connected with the side wall (21) at an angle, and the connecting plate (22) is provided with a notch (221); when the inner frame (2) is installed in the shell (1), the side wall (21) and the first inner wall (14) are oppositely and spacedly arranged along the axial direction of the insertion shaft, the connecting plate (22) is located between the side wall (21) and the first inner wall (14), and the blocking part (13) is clamped with the notch (221).

5. The sheet media handling apparatus according to claim 3, wherein, When the blocking part (13) is connected with the inner wall of the shell (1), the shell (1) comprises a reinforcing plate (15), the reinforcing plate (15) is connected with the inner wall of the shell (1) at an angle, and the reinforcing plate (15) is used for supporting the inner frame (2); and the lower end of the blocking part (13) is connected with the reinforcing plate (15).

6. The sheet media handling apparatus according to claim 5, wherein, The sheet medium processing device further comprises a fastener (4), when the inner frame (2) is installed in the shell (1), the fastener (4) is screwed with the inner frame (2) through the reinforcing plate (15) from below the reinforcing plate (15).

7. The sheet media handling apparatus according to claim 3, wherein, The inner wall of the shell (1) comprises a first inner wall (14) and a second inner wall (17) connected at an angle, and the blocking part (13) comprises a first plate (131) and a second plate (132) connected at an angle; the first end of the first plate (131) is connected with the first inner wall (14), the first end of the second plate (132) is connected with the second end of the first plate (131), and the second end of the second plate (132) is connected with the second inner wall (17); when the inner frame (2) is installed in the shell (1), the second plate (132) is opposite to the second end of the connecting arm (32) along the axial direction of the insertion shaft, and is used for preventing the insertion shaft from being separated from the insertion hole.

8. The sheet media handling apparatus according to any one of claims 1-7, wherein, The shell (1) comprises a middle shell (11) and a bottom shell (12); the first opening (111) is arranged on the middle shell (11), and the inner frame (2) is detachably installed in the middle shell (11) through the first opening (111); the blocking part (13) is arranged on the inner wall of the middle shell (11), and the middle shell (11) is further provided with a third opening (112) opposite to the first opening (111); the bottom shell (12) is detachably connected with the middle shell (11); when the inner frame (2) is installed in the middle shell (11) and the bottom shell (12) is detached from the middle shell (11), the bottom of the inner frame (2) is exposed through the third opening (112); when the inner frame (2) is installed in the middle shell (11) and the bottom shell (12) is connected with the middle shell (11), the bottom shell (12) closes the third opening (112).

9. The sheet media handling apparatus according to claim 8, wherein, The sheet medium processing device further comprises a main control board installed at the bottom of the inner frame (2), which is exposed when the inner frame (2) is installed in the middle shell (11) and the bottom shell (12) is detached from the middle shell (11), and is shielded by the bottom shell (12) when the inner frame (2) is installed in the middle shell (11) and the bottom shell (12) is connected with the middle shell (11).

10. The sheet media handling apparatus according to any one of claims 1-7, wherein The sheet medium processing device further comprises a printing assembly and a cutter (7), the accommodating cavity (23) is used for accommodating a printing medium; the printing assembly comprises a printing head and a printing rubber roller (61), the cutter (7) comprises a static blade assembly (71) and a dynamic blade assembly (72), the printing head and the dynamic blade assembly (72) are both installed on the inner frame (2), the printing rubber roller (61) and the static blade assembly (71) are both installed on the upper cover (3), when the upper cover (3) is located at the closed position, the printing head cooperates with the printing rubber roller (61) to print the printing medium, and the dynamic blade assembly (72) cooperates with the static blade assembly (71) to cut off the printing medium; when the upper cover (3) is located at the open position, the printing head is separated from the printing rubber roller (61), and the dynamic blade assembly (72) is separated from the static blade assembly (71).

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