A rotatable zeroing automatic numberer

Abstract

The utility model relates to the field of number machine, concretely is a kind of automatic number machine of rotatable zeroing. It includes number machine body, rotating shaft rotationally installed on number machine body and the multiple dials of coaxial rotation installation on rotating shaft;Rotating shaft outer circumferential surface is provided with clamping groove, and dial axial one side surface has installation groove, and dial has the circular table part of being located in the groove bottom of installation groove, and circular table part and dial central shaft eccentric distribution, and dial is rotationally arranged with the positioning claw of V shape on circular table part, and the outer end of positioning claw elastically abuts on the inner circumferential surface in installation groove, and the inner end of positioning claw can be clamped into clamping groove. The utility model realizes zeroing operation using the positioning claw of elasticity, and the structure for zeroing is simplified, and it is convenient to assemble, and assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of numbering machines, and in particular to an automatic numbering machine that can be rotated to zero. Background Technology

[0002] Automatic numbering machines are one of the most commonly used manual printing tools for document and paper coding. Almost all automatic numbering machines on the market operate on the principle of pressing down on a handle to move the pawl, which in turn drives the number wheels to advance. Each press advances one position, or several presses are repeated to advance one position. Currently, after using an automatic numbering machine, resetting the number wheels requires manually rotating each wheel by hand or using a dial tool. Due to the complex structure of automatic numbering machines and the limited space for manipulating the number wheels, this process is time-consuming and prone to errors. For example, if a document starts at 00001 and ends at page 66666, after using the numbering machine, a dial tool is needed to rotate the units digit 6 back to 0, the tens digit 6 back to 0, the hundreds digit 6 back to 0, the thousands digit 6 back to 0, and so on. Each time, this requires a significant amount of time to rotate all the number wheels back to their initial 0 position, making the operation cumbersome.

[0003] Chinese Patent Publication No. CN222845067U discloses an automatic numbering machine that can rotate quickly to zero and automatically sink and hide. When zeroing, the rotating shaft drives the positioning claw a, which is tensioned by the irregular spring a, to rotate through the one-way rotating ring. The outer end of the positioning claw a abuts against the inner circumferential wall of the mounting groove a. The positioning claw a drives the sinking character wheel to rotate until the unit character wheel and multiple sinking character wheels rotate to the position where the 0 digit is facing down, thus realizing the zeroing operation.

[0004] However, the above technical solution has the following shortcomings: the space of the mounting slot a is limited, and it is not easy for workers to manually assemble the irregular spring a, positioning claw and one-way rotating ring parts used for zeroing, resulting in low assembly efficiency. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a rotatable zeroing automatic numbering machine. It utilizes elastic positioning claws to achieve the zeroing operation, simplifies the structure used for zeroing, facilitates assembly, and improves assembly efficiency.

[0006] The technical solution of this utility model is an automatic numbering machine that can be rotated to zero, including a numbering machine body, a rotating shaft rotatably mounted on the numbering machine body, and multiple number wheels coaxially rotatably mounted on the rotating shaft; a slot is provided on the outer circumferential surface of the rotating shaft, and a mounting groove is provided on one side surface of the number wheel along the axial direction. The number wheel has a frustum located at the bottom of the mounting groove, and the frustum is eccentrically distributed with respect to the central axis of the number wheel. A V-shaped positioning claw is rotatably provided on the frustum of the number wheel, and the outer end of the positioning claw elastically abuts against the inner circumferential surface of the mounting groove, while the inner end of the positioning claw can be engaged in the slot.

[0007] Preferably, the positioning claw is an elastic element.

[0008] Preferably, the positioning claw includes a locking plate portion and a card portion, with one end of the locking plate portion and one end of the card portion integrally connected. The locking plate portion has a circular hole that fits into the frustum portion, and the locking plate portion gradually bends towards the central axis of the rotating shaft in a direction away from the frustum portion.

[0009] Preferably, the thickness of the card plate portion is greater than the thickness of the card portion.

[0010] Preferably, the slot extends through the shaft along its length.

[0011] Preferably, the slot opening is chamfered.

[0012] Preferably, a knob is provided at the outer end of the rotating shaft.

[0013] Preferably, the mounting groove is a circular groove.

[0014] Compared with existing technologies, this utility model has the following beneficial technical effects: This utility model utilizes elastic positioning claws to achieve the zeroing operation, simplifying the structure used for zeroing, facilitating assembly, saving assembly time, and improving assembly efficiency. During zeroing, the user rotates the knob, which drives the rotating shaft to rotate. The shaft, through slots, engages the positioning claws on the inner sides of different oriented character wheels. Engaging the inner ends of the positioning claws into the slots aligns the characters on the outer periphery of all character wheels, ultimately adjusting the "0" characters on all character wheels to a downward-facing distribution, thus completing the zeroing operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of a partial structure; Figure 3 This is a schematic diagram showing the distribution of the positioning claws; Figure 4 This is an exploded view of the structure of an embodiment of the present utility model.

[0016] Reference numerals: 1. Handwheel; 2. Handle spring clip; 3. Handle spring; 4. Housing; 5. Handle bracket; 6. Moving claw seat; 7. Moving claw bracket; 8. Moving claw mechanism; 9. Ink cartridge connector; 10. Ink cartridge; 11. Support bracket; 12. Claw; 13. Claw compression spring; 14. Stop bracket; 15. Knob; 16. Rotating shaft; 161. Slot; 1611. Chamfer; 17. Double gear; 18. Triple gear; 19. Type wheel; 191. Mounting slot; 20. Positioning claw. Detailed Implementation

[0017] like Figures 1-4 As shown, the automatic numbering machine that can be rotated to zero proposed in this embodiment includes a numbering machine body, a rotating shaft 16 rotatably mounted on the numbering machine body, and a plurality of character wheels 19 coaxially rotatably mounted on the rotating shaft 16, with the plurality of character wheels 19 being distributed in close contact.

[0018] like Figure 2 and Figure 3 As shown, a knob 15 is provided at the outer end of the rotating shaft 16. The user rotates the knob 15 to drive the rotating shaft 16 to rotate, thereby performing the zeroing operation of the character wheel 19. The outer circumference of the knob 15 has anti-slip teeth for easy operation. A slot 161 is provided on the outer circumferential surface of the rotating shaft 16, and the slot 161 extends along the length of the rotating shaft 16. The surface of the character wheel 19 on one axial side has a mounting groove 191, which is a circular groove for easy manufacturing. The character wheel 19 has a frustum located at the bottom of the mounting groove 191. The frustum is eccentrically distributed with respect to the central axis of the character wheel 19, and a V-shaped positioning claw 20 is rotatably mounted on the frustum. The outer end of the positioning claw 20 elastically abuts against the inner circumferential surface of the mounting groove 191, and the inner end of the positioning claw 20 can engage with the slot 161.

[0019] like Figure 3 As shown, the positioning claw 20 is an elastic element. The positioning claw 20 includes a locking plate portion and a locking plate portion, with one end of the locking plate portion and one end of the locking plate portion integrally connected. The thickness of the locking plate portion is greater than the thickness of the locking plate portion, allowing the locking plate portion to bend elastically. The end of the locking plate portion away from the frustum portion is the inner end of the entire positioning claw 20, and the end of the locking plate portion away from the frustum portion is the outer end of the entire positioning claw 20. This outer end can be designed with an arc shape to reduce wear between it and the character wheel 19. The locking plate portion has a circular hole that fits into the frustum portion, allowing for convenient rotational installation of the positioning claw 20. The locking plate portion gradually bends towards the central axis of the rotating shaft 16 along the direction away from the frustum portion. A chamfer 1611 is provided at the opening of the slot 161 to facilitate guiding the end of the locking plate portion into the inside of the slot 161.

[0020] This embodiment utilizes flexible positioning claws 20 to achieve the zeroing operation, simplifying the structure used for zeroing, facilitating assembly, saving assembly time, and improving assembly efficiency. During zeroing, the user rotates knob 15, which drives shaft 16 to rotate. Shaft 16 engages the positioning claws 20 on the inner sides of different oriented character wheels 19 through slots 161, locking the inner ends of the positioning claws 20 into the slots 161. After shaft 16 rotates at most one revolution, the characters on the outer circumference of all character wheels 19 are aligned. Then, knob 15 is rotated further to adjust the "0" characters on all character wheels 19 to a downward-facing distribution, thus completing the zeroing operation.

[0021] The numbering machine body in this embodiment includes a handwheel 1, a handle spring clip 2, a handle spring 3, a housing 4, a handle bracket 5, a moving claw seat 6, a moving claw bracket 7, a moving claw mechanism 8, an ink cartridge connector 9, an ink cartridge 10, a support frame 11, a latch 12, a latch compression spring 13, a stop bracket 14, a double gear 17, and a triple gear 18. The connections between the above parts are all existing technologies in the field of numbering machines, and the usage is also known to those skilled in the art of numbering machines. For reference, see the automatic numbering machine with rotatable rapid zeroing and automatic sinking and hiding disclosed in patent publication number CN222845067U. The rotating shaft 16 is rotatably mounted on the handle bracket 5.

[0022] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A rotatable zeroing automatic numbering machine, comprising a numbering machine body, a rotating shaft (16) rotatably mounted on the numbering machine body, and a plurality of number wheels (19) coaxially rotatably mounted on the rotating shaft (16), characterized in that: A slot (161) is provided on the outer circumferential surface of the rotating shaft (16), and a mounting groove (191) is provided on one side of the axial side of the character wheel (19). The character wheel (19) has a frustum located at the bottom of the mounting groove (191). The frustum is eccentrically distributed with the central axis of the character wheel (19). The character wheel (19) is provided with a V-shaped positioning claw (20) on the frustum. The outer end of the positioning claw (20) elastically abuts against the inner circumferential surface of the mounting groove (191), and the inner end of the positioning claw (20) can be inserted into the slot (161).

2. The automatic numbering machine with rotatable zeroing function according to claim 1, characterized in that, The positioning claw (20) is an elastic element.

3. The automatic numbering machine with rotatable zeroing function according to claim 1, characterized in that, The positioning claw (20) includes a plate part and a card part. One end of the plate part and one end of the card part are integrally connected. The plate part has a round hole that fits into the frustum part. The plate part gradually bends towards the central axis of the rotating shaft (16) in the direction away from the frustum part.

4. The automatic numbering machine with rotatable zeroing function according to claim 3, characterized in that, The thickness of the plate section is greater than the thickness of the card section.

5. The automatic numbering machine with rotatable zeroing function according to claim 1, characterized in that, The slot (161) runs through the length of the shaft (16).

6. The automatic numbering machine with rotatable zeroing function according to claim 1, characterized in that, The slot (161) has a chamfer (1611) at the opening.

7. The automatic numbering machine with rotatable zeroing function according to claim 1, characterized in that, A knob (15) is provided at the outer end of the rotating shaft (16).

8. The automatic numbering machine with rotatable zeroing function according to claim 1, characterized in that, The mounting slot (191) is a circular slot.

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