Paper feed door locking mechanism and printing machine using the same

Abstract

The present invention provides a paper feed door locking mechanism and a printing machine using the same. The mechanism includes two limiting members, a pushing member, and a locking assembly. The two limiting members are rotatably arranged on a bottom plate. The two limiting members are configured to be able to move closer to or farther from each other by rotation, and when they move away from each other to a first position, they jointly form a limiting hole with an opening at one end, and when they move closer to each other to a second position, they can close the opening; the pushing member can move from the opening into the limiting hole, and at the same time push the two limiting members to rotate toward each other to the second position; the locking assembly is used to lock the two limiting members in the second position when the two limiting members rotate to the second position; and to release the lock of the two limiting members and simultaneously reset the two limiting members to the first position. The paper feed door locking mechanism provided by the present invention can ensure that the locked paper feed door will not deviate due to reasons such as collision, vibration, etc., or the seal position will not be inaccurate.

Description

Technical Field

[0001] The present invention relates to the technical field of office automation, in particular to a paper feed door locking mechanism and a printer using the paper feed door locking mechanism. Background Art

[0002] In daily management, the traditional seal management method is to assign a dedicated manager to be responsible for the use and maintenance of seals. This seal management method not only has high work efficiency and operating costs, but also makes it difficult to prevent violations of seal management regulations and behaviors that go against normal will during daily seal management. Once such violations occur, they often cause significant losses to the company or organization. To solve this problem, seal machines that can automatically affix seals are gaining increasing attention.

[0003] Conventional stamping machines usually have a paper feed door for loading paper to be stamped, feeding it into a designated position in the stamping machine for stamping, and feeding the stamped paper out of the stamping machine.

[0004] However, the paper feed door of traditional printing machines inevitably has the following problems in practical applications, namely:

[0005] Although traditional printing machines are usually equipped with positioning members to limit the paper feed door to a specified position inside the printing machine, since the positioning member only serves to limit the position and cannot lock the paper feed door, the paper feed door may often deviate from the specified position due to reasons such as collision and vibration, resulting in inaccurate position of the seal on the paper. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a paper feed door locking mechanism and a printing machine using the same, which can ensure that the locked paper feed door will not be offset or the seal position will be inaccurate due to reasons such as collision and vibration.

[0007] In order to achieve the purpose of the present invention, a paper feed door locking mechanism is provided, which is installed on the bottom plate of the printing machine and is characterized in that it includes two limit members, a push member and a locking assembly, wherein:

[0008] The two limiting members are rotatably arranged on the bottom plate, and the two limiting members are configured to be able to move closer to or farther from each other by rotating, and together form a limiting hole with an open end when they move away from each other to a first position, and can close the opening when they move closer to each other to a second position;

[0009] The pushing member is provided on the paper feed door and is capable of moving from the opening into the limiting hole during the process of the paper feed door moving into the interior of the printer, while simultaneously pushing the two limiting members to rotate toward each other to the second position;

[0010] The locking assembly is used to lock the two limiting members in the second position when the two limiting members rotate to the second position; and to unlock the two limiting members and simultaneously reset the two limiting members to the first position.

[0011] Optionally, the two limiting members have two first side surfaces opposite to each other, and first grooves are correspondingly provided on the two first side surfaces to form the limiting hole;

[0012] When the two limiting members are in the first position, there is a gap between the two first side surfaces and between the two first grooves that allows the pushing member to pass through, namely the opening; when the two limiting members are in the second position, the relative positions of the two first grooves are set so that the pushing member cannot be moved out.

[0013] Optionally, the two limiting members are staggered in the vertical direction.

[0014] Optionally, the gap between the two first side surfaces gradually increases from one end close to the first groove to the other end away from the first groove.

[0015] Optionally, the locking assembly includes a blocking member, two elastic members and a pop-up assembly, wherein:

[0016] The blocking member is configured to be located at a locking position capable of blocking the two limiting members from rotating when the two limiting members are in the second position, so as to lock the two limiting members in the second position;

[0017] The pop-up assembly is connected to the blocking member and is used to apply a force to the blocking member to move it from the locked position to the unlocked position, thereby releasing the lock on the two limiting members;

[0018] The two elastic members are used to respectively reset the two limiting members to the first position when the blocking member is in the unlocking position.

[0019] Optionally, the blocking member is located on the side of the two limiting members away from the limiting hole, and the two limiting members have two second side surfaces opposite to each other, and second grooves are correspondingly provided on the two second side surfaces to form a locking groove. When the blocking member is in the locking position, it is located in the locking groove.

[0020] Optionally, the side surface of the locking groove matches the side surface of the blocking member.

[0021] Optionally, the ejection assembly includes a bracket, a rotating shaft, an electromagnetic push rod and a return spring, wherein:

[0022] The bracket is fixed to the bottom plate;

[0023] The electromagnetic push rod is retractably arranged on the bracket and connected to the blocking member via the rotating shaft, and the blocking member is capable of rotating around the rotating shaft; the electromagnetic push rod is used to drive the blocking member to rotate from the locked position to the unlocked position when energized;

[0024] The reset spring is used to reset the electromagnetic push rod when power is off, so as to drive the blocking member to rotate from the unlocking position to the locking position.

[0025] Optionally, the paper feed door locking mechanism further includes a position sensor, and the position sensor is configured to send a locking electrical signal when detecting that the blocking member moves to the locking position.

[0026] As another technical solution, the present invention also provides a printing machine, which includes a paper feed door for loading paper to be stamped therein, and a paper feed door locking mechanism for locking the paper feed door in the printing machine or popping it out from the printing machine, and the paper feed door locking mechanism adopts the above-mentioned paper feed door locking mechanism provided by the present invention.

[0027] The present invention has the following beneficial effects:

[0028] The paper feed door locking mechanism provided by the present invention not only has a simple mechanical structure and occupies a small space, but also performs dual functions of positioning and locking. Once locked, it is not easily disengaged, thereby ensuring that the locked paper feed door will not shift due to factors such as collisions and vibrations, resulting in inaccurate seal positioning. Furthermore, the paper feed door locking mechanism provided by the present invention can also automatically eject the paper feed door from the printer, thereby bringing convenience to use.

[0029] The printing machine provided by the present invention adopts the above-mentioned paper feed door locking mechanism provided by the present invention, which can ensure that the locked paper feed door will not be offset or the seal position will be inaccurate due to reasons such as collision and vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A top view of the paper feed door locking mechanism provided by an embodiment of the present invention in a locked state;

[0031] Figure 2 A side view of the locking assembly in a locked state according to an embodiment of the present invention;

[0032] Figure 3 A top view of the paper feed door locking mechanism provided by an embodiment of the present invention in an unlocked state;

[0033] Figure 4A side view of the locking assembly in the unlocked state according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the paper feed door locking mechanism provided by the present invention and the printer using the same will be described in detail below with reference to the accompanying drawings.

[0035] The bottom plate inside the printer is set in the body of the printer to support components such as the paper feed door; in this embodiment, the paper feed door locking mechanism is installed on the bottom plate and is located close to the inner end surface of the paper feed door (that is, one end inside the body of the printer) to lock the paper feed door at a specified position in the printer, or automatically pop out the paper feed door from the printer (that is, make the paper feed door extend horizontally relative to the outer surface of the printer).

[0036] For details, please refer to Figures 1 to 4 The paper feed door locking mechanism is mounted on a base plate 1 and includes two limiting members (2a, 2b), a pusher 10, and a locking assembly. The two limiting members (2a, 2b) are rotatably disposed on the base plate 1. The two limiting members can be disposed in various ways. For example, two rotation axes (3a, 3b) are disposed on the base plate 1. The two limiting members (2a, 2b) are respectively connected to the two rotation axes (3a, 3b) and can rotate in a horizontal plane around the rotation axes. Furthermore, the two limiting members (2a, 2b) are configured to be able to move closer to or farther from each other by rotation.

[0037] For example, when the limiting member 2a rotates clockwise (ie, Figure 3 Y1 direction in the figure), and at the same time, the limiter 2b rotates counterclockwise around the rotation axis 3b in the horizontal plane where the paper is located (ie, Figure 3 When the two limiting members (2a, 2b) rotate in the Y2 direction, they move away from each other to the extent that Figure 3 The first position shown in FIG. 2 is a first position in which the two limiting members (2a, 2b) together form a limiting hole 4 with an open end. When the two limiting members (2a, 2b) rotate in opposite directions, the two members approach each other to the position shown in FIG. Figure 1 The second position shown is where the opening of the limiting hole 4 is closed.

[0038] like Figure 2 and Figure 3 As shown, the push member 10 is provided on the paper feed door (not shown in the figure), and the push member 10 is, for example, a positioning pin. Figure 3 As shown, when the two limiting members (2a, 2b) are in the first position, during the process of the paper feed door moving into the interior of the printer, the push member 10 can move synchronously with the paper feed door (i.e., along the Figure 3X1 direction in the figure), and move into the limiting hole 4 from the above opening, and at the same time push the two limiting members (2a, 2b) to rotate in the direction of approaching each other until Figure 1 In the second position shown, the two limiting members (2a, 2b) close the opening, so the pushing member 10 is confined in the limiting hole 4 and cannot be moved out.

[0039] The locking assembly is used to lock the two limiting members (2a, 2b) in the second position when the two limiting members (2a, 2b) rotate to the second position. At this time, the positions of the two limiting members (2a, 2b) and the pushing member 10 are locked, thereby achieving the position locking of the paper feed door. The locking assembly is also used to unlock the two limiting members (2a, 2b) and simultaneously reset the two limiting members (2a, 2b) to the second position. Figure 3 In the first position shown, the pusher 10 can be moved out of the limiting hole 4 along the X2 direction through the opening, so that the paper feed door can be moved out of the printer.

[0040] In this embodiment, the two limiting members (2a, 2b) have two first side surfaces (21a, 21b) facing each other, and the two first side surfaces (21a, 21b) are correspondingly provided with first grooves (4a, 4b) to form the limiting hole 4. Figure 3 In the first position shown, there is a gap between the two first side surfaces (21a, 21b) and between the two first grooves (4a, 4b) that allows the pusher 10 to pass through, that is, the above-mentioned opening. Figure 1 In the second position shown, the relative positions of the two first grooves (4a, 4b) are set so that the pusher 10 cannot be removed. For example, the two first grooves (4a, 4b) together form a complete circular hole. In this case, there is no gap between the two first grooves (4a, 4b), thereby achieving a positional limit for the pusher 10. Of course, in actual applications, there may also be a gap between the two first grooves (4a, 4b), as long as the size of the gap is smaller than the size of the pusher 10 so that it cannot pass through.

[0041] In order to avoid collision between the two limiting members (2a, 2b) and improve movement stability, the two limiting members (2a, 2b) are staggered in the vertical direction. For example, among the two limiting members (2a, 2b), the limiting member 2a can be located above the limiting member 2b, and the two partially overlap.

[0042] In addition, in order to improve the stability and accuracy of movement, a guide member can be provided to limit the rotational trajectory of the two limiting members (2a, 2b). The guide member is, for example, a guide rail slider structure. Alternatively, the side profiles of the two limiting members (2a, 2b) can be set to be in an arc shape, and a guide structure that matches the side profiles of the two limiting members (2a, 2b) can be provided to limit the rotational trajectory of the two limiting members (2a, 2b).

[0043] In this embodiment, if Figure 1 As shown, the gap between the two first side surfaces (21a, 21b) gradually increases from one end closer to the two first grooves (4a, 4b) to the other end farther away from the two first grooves (4a, 4b). Thus, the gap between the two first side surfaces (21a, 21b) forms a "bell-mouth"-like structure, thereby ensuring that the pusher 10 can move into the gap while simultaneously enabling the pusher 10 to push the two limiting members (2a, 2b) to rotate away from each other. In practical applications, the two first side surfaces (21a, 21b) can be flat, arc-shaped convex surfaces, etc.

[0044] In this embodiment, the locking assembly includes a blocking member 5, two elastic members (6a, 6b) and a pop-up assembly, wherein the blocking member 5 is configured to be locked when the two limiting members (2a, 2b) are in the Figure 1 When in the second position shown, it is in a locking position capable of blocking the two limiting members (2a, 2b) from rotating, so as to lock the two at the second position.

[0045] The blocking member 5 can have a variety of blocking modes. For example, the blocking member 5 is located on the side of the two limiting members (2a, 2b) away from the limiting hole 4, and the two limiting members (2a, 2b) have two second side surfaces (22a, 22b) opposite to each other, and the two second side surfaces (22a, 22b) are correspondingly provided with second grooves to form the locking groove 23. The blocking member 5 is in the following Figure 1 In the locked position shown, the seal is located in the locking groove 23. At this time, the two limiting members (2a, 2b) clamp the blocking member 5 therebetween, preventing it from rotating. This ensures that the two limiting members (2a, 2b) are not easily disengaged after being locked, thereby ensuring that the locked paper feed door will not deviate due to factors such as collision and vibration, or cause problems such as inaccurate seal position.

[0046] Optionally, the side of the locking groove 23 cooperates with the side of the blocking member 5, so that the two limiting members (2a, 2b) can be fixed, thereby improving the limiting accuracy, and further ensuring that the locked paper feed door will not be offset due to reasons such as collision, vibration, etc., or the seal position will be inaccurate.

[0047] The pop-up assembly is connected to the blocking member 5 and is used to apply pressure to the blocking member 5 so that it Figure 1 The locked position shown is moved to Figure 3 The force of the unlocking position shown is used to release the locking of the two limiting members (2a, 2b). Figure 2 and Figure 4 As shown, in this embodiment, the pop-up assembly includes a bracket (not shown in the figure), a rotating shaft 7, an electromagnetic push rod 8 and a reset spring (not shown in the figure), wherein the bracket is fixed on the base plate 1; the electromagnetic push rod 8 is retractably arranged on the bracket and is connected to the blocking member 5 through the rotating shaft 7, and the blocking member 5 can rotate around the rotating shaft 7 in a vertical plane to be able to rotate to Figure 1 Shown locked position or Figure 3 The electromagnetic push rod 8 is used to drive the blocking member 5 to rotate from the locked position to the unlocked position when power is turned on. Figure 4 As shown, the electromagnetic push rod 8 retracts along the X2 direction when energized, so as to drive the blocking member 5 to rotate around the rotation axis 7, thereby rotating from the locked position to the unlocked position.

[0048] The above-mentioned reset spring is used to reset the electromagnetic push rod 8 when the power is off, that is, to extend along the X1 direction to the position shown in FIG. Figure 2 The position shown in FIG. 1 is used to drive the blocking member 5 to rotate from the unlocked position to the locked position. The reset spring can be arranged in various ways. For example, the reset spring can be sleeved on the electromagnetic push rod 8 and configured to generate compression deformation after the electromagnetic push rod 8 retracts when the power is on. When the power is off, the reset spring applies elastic force to the electromagnetic push rod 8 to extend the electromagnetic push rod 8, thereby achieving the reset of the electromagnetic push rod 8.

[0049] In this embodiment, the two elastic members (6a, 6b) are used to Figure 3 When the unlocking position is shown, the two limiting members (2a, 2b) are reset to Figure 3 The first position is shown. The two elastic members (6a, 6b) can have various structures. For example, the two elastic members (6a, 6b) are tension springs, one end of each tension spring is connected to the limit member, and the other end is connected to the bottom plate 1. The two tension springs are always in a stretched state, so as to apply elastic force to the two elastic members (6a, 6b) to rotate them away from each other, thereby achieving automatic resetting of the two limit members (2a, 2b). In this way, the paper feed door can be automatically ejected from the printer, thereby bringing convenience to use.

[0050] In this embodiment, the paper feed door locking mechanism further includes a position sensor 9, which is used to detect that the blocking member 5 moves to the position where the paper feed door is locked. Figure 1 When the locking position shown is reached, a locking electrical signal is sent. In this way, it can be known whether the blocking member 5 is in place. There are many ways to detect the position sensor 9, for example, Figure 2 and Figure 4As shown, the blocking member 5 is provided with a blocking piece 51. When the blocking member 5 moves to Figure 1 When the locking position is shown, the blocking piece 51 can be moved to Figure 2 The blocking position shown in FIG. 5 is the blocking position in which the blocking piece 51 is located between the transmitting end and the receiving end of the position sensor 9, so that the receiving end cannot receive the signal sent by the transmitting end; when the blocking piece 5 moves from the locking position to Figure 3 In the unlocked position shown, the blocking piece 51 can be moved to Figure 4 In the non-blocking position shown, the blocking piece 51 is moved out from between the transmitting end and the receiving end of the position sensor 9, so that the receiving end can receive the signal sent by the transmitting end. Thus, the position sensor 9 can detect the position of the blocking member 5.

[0051] In summary, the paper feed door locking mechanism provided by the embodiments of the present invention not only has a simple mechanical structure and occupies a small space, but also performs dual functions of positioning and locking. Once locked, it is difficult to disengage, thereby ensuring that the locked paper feed door will not shift due to factors such as collisions and vibrations, resulting in problems such as inaccurate seal positioning. Furthermore, the paper feed door locking mechanism provided by the present invention can also automatically eject the paper feed door from the printer, thereby bringing convenience to users.

[0052] As another technical solution, an embodiment of the present invention also provides a printing machine, which includes a paper feed door for loading paper to be stamped therein, and a paper feed door locking mechanism for locking the paper feed door in the printing machine or popping it out from the printing machine. The paper feed door locking mechanism adopts the above-mentioned paper feed door locking mechanism provided in an embodiment of the present invention.

[0053] The printing machine provided by the embodiment of the present invention adopts the above-mentioned paper feed door locking mechanism provided by the embodiment of the present invention, which not only allows the paper feed door to automatically pop out from the printing machine, but also plays the dual role of positioning and locking, thereby ensuring that the locked paper feed door will not be offset due to reasons such as collision, vibration, etc., or the seal position will be inaccurate.

[0054] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A paper feed door locking mechanism, which is mounted on the bottom plate of a printing machine, characterized in that: It includes two limiting parts, a pushing part and a locking assembly, wherein: The two limiting members are rotatably arranged on the bottom plate, and the two limiting members are configured to be able to move closer to or farther from each other by rotating, and together form a limiting hole with an open end when they move away from each other to a first position, and can close the opening when they move closer to each other to a second position; The pushing member is provided on the paper feed door and is capable of moving from the opening into the limiting hole during the process of the paper feed door moving into the interior of the printer, while simultaneously pushing the two limiting members to rotate toward each other to the second position; The locking assembly is used to lock the two limiting members in the second position when the two limiting members rotate to the second position; and to release the lock of the two limiting members and simultaneously return the two limiting members to the first position; The two limiting members have two first side surfaces opposite to each other, and first grooves are correspondingly provided on the two first side surfaces to form the limiting holes; When the two limiting members are in the first position, there is a gap between the two first side surfaces and between the two first grooves, which is the opening, through which the pushing member can pass; when the two limiting members are in the second position, the relative positions of the two first grooves are set so that the pushing member cannot be moved out; It also includes a guide member for limiting the rotation trajectory of the two limiting members.

2. The paper feed door locking mechanism according to claim 1, characterized in that: The two limiting members are staggered in the vertical direction.

3. The paper feed door locking mechanism according to claim 1, characterized in that: The gap between the two first side surfaces gradually increases from one end close to the first groove to the other end away from the first groove.

4. The paper feed door locking mechanism according to any one of claims 1 to 3, characterized in that: The locking assembly includes a blocking member, two elastic members and a pop-up assembly, wherein: The blocking member is configured to be located at a locking position capable of blocking the two limiting members from rotating when the two limiting members are in the second position, so as to lock the two limiting members in the second position; The pop-up assembly is connected to the blocking member and is used to apply a force to the blocking member to move it from the locked position to the unlocked position, thereby releasing the lock on the two limiting members; The two elastic members are used to respectively reset the two limiting members to the first position when the blocking member is in the unlocking position.

5. The paper feed door locking mechanism according to claim 4, characterized in that: The blocking member is located on the side of the two limiting members away from the limiting hole, and the two limiting members have two second side surfaces opposite to each other, and second grooves are correspondingly provided on the two second side surfaces to form a locking groove. When the blocking member is in the locking position, it is located in the locking groove.

6. The paper feed door locking mechanism according to claim 5, characterized in that: The side surface of the locking groove matches the side surface of the blocking member.

7. The paper feed door locking mechanism according to claim 4, characterized in that: The ejection assembly includes a bracket, a rotating shaft, an electromagnetic push rod and a return spring, wherein: The bracket is fixed to the bottom plate; The electromagnetic push rod is retractably arranged on the bracket and connected to the blocking member via the rotating shaft, and the blocking member is capable of rotating around the rotating shaft; the electromagnetic push rod is used to drive the blocking member to rotate from the locked position to the unlocked position when energized; The reset spring is used to reset the electromagnetic push rod when power is off, so as to drive the blocking member to rotate from the unlocking position to the locking position.

8. The paper feed door locking mechanism according to claim 4, characterized in that: The paper feed door locking mechanism further includes a position sensor, which is used to send a locking electrical signal when detecting that the blocking member moves to the locking position.

9. A stamping machine comprising a paper feed door for loading paper to be stamped therein, and a paper feed door locking mechanism for locking the paper feed door in the stamping machine or ejecting the paper feed door from the stamping machine, characterized in that: The paper feed door locking mechanism adopts the paper feed door locking mechanism according to any one of claims 1 to 8.

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