Control device and method for adjustable seal spacing of roller stamping device

Abstract

This invention discloses a control device and method for adjustable stamp spacing in a roller stamping device. The stamp half-roller in this invention is a fan-shaped column with a stamp pattern on its surface. The axis of the stamp half-roller is perpendicular to the paper feeding direction of the paper feeding channel, and a lower stamp hole is opened on the lower feeding plate. When the stamp half-roller with the stamp pattern rotates to the paper feeding channel, it passes through the lower stamp hole, thereby clamping the paper in the center with the stamp rubber roller to print the stamp pattern on the paper. The stamp half-roller and the stamp rubber roller are driven by a stamp driving device to rotate, and the rotation speed is independent of the paper feeding roller assembly and can be adjusted as needed, thereby controlling the change in stamp spacing. The technical advantage of this invention is that, without changing the structure of the roller stamping device (including the stamp roller and the diameter of the stamp shaft), the stamped stamp spacing can be adjusted simply by changing preset parameters and controlling the rotation speed of the stamp shaft, while ensuring that the stamps do not deform.

Description

Technical Field

[0001] This invention relates to a control device and method for an adjustable stamp spacing in a roller stamping device. Background Technology

[0002] Currently, to improve work efficiency and reduce manual labor intensity, automatic stamping devices are increasingly being used in banking, social security, taxation, and other fields to replace manual stamping, enabling the rapid completion of stamping and signing of large quantities of documents and receipts. Among automatic stamping devices, roller stamping devices are widely used due to their high stamping speed.

[0003] As the application of roller stamping devices becomes more widespread, users' demands for stamping methods are also becoming more diverse. In the traditional stamping method, taking the need to affix three stamps vertically on an A4 sheet of paper as an example, the spacing between these three stamps is fixed and equal to the circumference L of the stamp axis unfolded along the stamp face. However, depending on actual needs, it may be necessary to affix three stamps at different vertical positions on an A4 sheet of paper, with the spacing between each stamp adjustable as needed. (See also...) Figure 1 The medium is conveyed in the conveying channel of the stamping device in the direction shown by the arrow. The distance between the first stamp and the paper head is L0, the distance between the second stamp and the first stamp is L1, and the distance between the third stamp and the second stamp is L2. It is required that the lengths L0, L1, and L2 are all adjustable. However, the currently used roller stamping devices cannot meet the requirement of adjustable distances, thus limiting the application range of roller stamping devices. Summary of the Invention

[0004] To address the technical problem that current roller stamping devices cannot adjust the stamp spacing, this invention provides a control device and method for adjusting the stamp spacing of roller stamping devices.

[0005] To achieve the above-mentioned technical objectives, the technical solution of the present invention is as follows:

[0006] A control device for an adjustable stamp spacing of a roller stamping device includes a paper feeding channel, a paper feeding roller assembly, a sensor unit, a stamp rubber roller, a stamp half roller, and a driven rubber wheel.

[0007] The paper feeding channel includes an upper feeding board and a lower feeding board, with a gap between the upper feeding board and the lower feeding board for the paper to be stamped to pass through;

[0008] The paper feed roller assembly includes an upper paper feed roller and a lower paper feed roller that are driven to rotate by a paper feed roller drive device. The axes of the upper paper feed roller and the lower paper feed roller are perpendicular to the paper conveying direction of the paper feeding channel. The upper paper feed board and the lower paper feed board have corresponding upper paper feed roller holes and lower paper feed roller holes. The lower end of the upper paper feed roller and the upper end of the lower paper feed roller pass through the upper paper feed roller hole and the lower paper feed roller hole respectively to contact each other to drive the paper to move.

[0009] The sensor unit includes a first sensor and a second sensor disposed on the paper feeding channel to detect the paper position in real time, and located on the front and rear sides of the paper feeding roller assembly along the paper feeding direction.

[0010] The axis of the stamp roller is perpendicular to the paper feeding direction of the paper feeding channel, and the lower end of the stamp roller passes through the upper stamp hole opened in the upper feeding cardboard.

[0011] The stamp half-roller is a fan-shaped column with a stamp pattern on its surface. The axis of the stamp half-roller is perpendicular to the paper feeding direction of the paper feeding channel, and a lower stamp hole is opened on the lower feeding cardboard. When the surface of the stamp half-roller with the stamp pattern rotates to the paper feeding channel, it passes through the lower stamp hole, thereby clamping the paper in the center with the stamp rubber roller to print the stamp pattern on the paper.

[0012] The stamp half-roller and the stamp rubber roller are driven by the stamp drive device to rotate, and the rotation speed is independent of the paper feed roller assembly and can be adjusted as needed, thereby controlling the change of stamp spacing.

[0013] The length of the stamp roller is greater than the length of the stamp half roller. The driven roller is coaxially arranged below the stamp roller with the stamp half roller. The paperboard is fed with a roller hole. The upper end of the driven roller passes through the roller hole to contact the stamp roller, thereby being driven by the stamp roller and driving the paper to move when the paper arrives.

[0014] The control device for adjustable stamp spacing of roller stamping device includes a sensor unit that further includes a sensing baffle and a third sensor. The sensing baffle has a sensing groove and is coaxially arranged with the stamp half-roller to rotate synchronously with it. The third sensor is arranged toward the sensing baffle to detect the position of the sensing groove.

[0015] A control method for adjustable stamp spacing in a roller stamping device, employing the aforementioned device, includes the following steps:

[0016] Step 1: Before the paper to be stamped reaches the paper feed roller assembly, the stamp half roller remains in the initial position where the stamp pattern does not contact the stamp rubber roller.

[0017] Step 2: After the paper passes through the paper feed roller assembly, the stamp half roller starts to rotate after a delay time T, and when the paper reaches the stamping starting point of the stamp half roller, the stamp half roller is accelerated to the same speed as the paper feed roller assembly.

[0018] Step 3: After the stamping endpoint of the stamp half-roller leaves the paper, the stamp half-roller enters an idle state. At this time, adjust the idle speed of the stamp half-roller to change the distance between the stamped and unstamped areas on the paper.

[0019] Step 4: Before the stamping starting point of the stamp half-roller contacts the paper again, make the speed of the stamp half-roller the same as that of the paper feed roller assembly.

[0020] Step 5: Before the number of stamps on the paper reaches the predetermined number, repeat steps 3 and 4. After the number of stamps on the paper reaches the predetermined number, stop the stamp half-roller from rotating and keep it in the initial position, then return to step 1 until the next piece of paper to be stamped arrives.

[0021] In the control method for adjustable stamp spacing of a roller stamping device, in step 1, the paper feeding roller assembly is started in advance before the paper to be stamped reaches the paper feeding roller assembly, and accelerates to the paper conveying speed before contacting the paper, and then maintains the speed.

[0022] The control method for adjustable stamp spacing in a roller stamping device involves the paper feeding roller assembly starting in advance when the first sensor detects paper.

[0023] In the control method for adjustable stamp spacing of a roller stamping device, in step 1, the stamp half-roller is kept in the initial position of not contacting the stamp rubber roller. This is determined by the position of the sensing groove on the sensing baffle detected by the third sensor. That is, when the third sensor detects the sensing groove on the sensing baffle, the stamp half-roller is in the initial position of not contacting the stamp rubber roller.

[0024] In the control method for adjustable stamp spacing of a roller stamping device, in step 2, the paper passing through the paper feed roller assembly is detected by a second sensor.

[0025] In the control method for adjustable stamp spacing of a roller stamping device, in step 2, the delay time T of the stamp half-roller is adjusted according to the distance of the first stamp from the edge of the paper.

[0026] The technical advantage of this invention is that, without changing the diameter of the stamp component in the roller stamping device structure, the spacing of the stamped signatures can be adjusted by simply changing preset parameters and controlling the rotation speed of the stamp shaft, while ensuring that the signatures do not deform. Attached Figure Description

[0027] Figure 1 This is a diagram illustrating how to affix three stamps to an A4-sized paper.

[0028] Figure 2 This is a schematic diagram showing the unfolding of the seal as the half-roller rotates one revolution.

[0029] Figure 3 This is a schematic diagram of the structure of the device of the present invention.

[0030] Figure 4 This is a schematic diagram of the stamp half-roller and the induction baffle of the device of the present invention.

[0031] Figure 5 This is a side view of the device of the present invention.

[0032] Figure 6 This is a perspective view of the device of the present invention.

[0033] Figure 7 This is a schematic diagram illustrating the stamping process of this invention.

[0034] Figure 8 The graph shows the speed and time curve of stamping three seals on an A4-sized sheet of paper according to the present invention.

[0035] Wherein 11 is the first sensor, 12 is the second sensor, 13 is the third sensor, 14 is the sensing baffle, 21 is the upper paper feed roller, 22 is the stamp rubber roller, 23 is the lower paper feed roller, 24 is the stamp optical axis, 25 is the driven rubber wheel, 26 is the stamp half roller, 141 is the sensing groove, 261 is the stamping start point, 262 is the stamping end point, 263 is the stamping area, 264 is the stamp idle area, 265 is the stamp positioning hole. Detailed Implementation

[0036] See Figure 2-6 The device provided in this embodiment includes a paper feeding channel, a paper feeding roller assembly, a sensor unit, a stamp roller, a stamp half roller, and a driven roller.

[0037] The paper feeding channel includes an upper feed board and a lower feed board, with a gap between them for the paper to be stamped to pass through. The paper feeding roller assembly includes an upper feed roller and a lower feed roller that are driven to rotate by a paper feeding roller drive device. The axes of the upper feed roller and the lower feed roller are perpendicular to the paper feeding direction of the paper feeding channel. The upper feed board and the lower feed board have corresponding upper feed roller holes and lower feed roller holes. The lower end of the upper feed roller and the upper end of the lower feed roller pass through the upper feed roller holes and the lower feed roller holes respectively to contact each other and drive the paper to move.

[0038] The sensor unit includes a first sensor and a second sensor disposed on the paper feeding channel to detect the paper position in real time, and located on both sides of the paper feeding roller assembly along the paper feeding direction.

[0039] The axis of the stamp roller is perpendicular to the paper feeding direction of the paper feed channel, and its lower end passes through the upper stamp hole in the upper feed plate. The stamp half-roller is a fan-shaped column with a stamp pattern on its surface. Its axis is also perpendicular to the paper feeding direction of the paper feed channel, and a lower stamp hole is located on the lower feed plate. When the stamp half-roller rotates to the paper feed channel, the surface with the stamp pattern passes through the lower stamp hole, thus clamping the paper in the center with the stamp roller to print the stamp pattern on the paper. Both the stamp half-roller and the stamp roller are driven by a stamp drive device to rotate, and their rotation speed is independent of the paper feed roller assembly and can be adjusted as needed to control the stamp spacing. The length of the stamp roller is greater than the length of the stamp half-roller. The driven roller is coaxially positioned below the stamp roller and the stamp half-roller. A roller hole is opened on the lower paper feed plate. The upper end of the driven roller passes through the roller hole to contact the stamp roller, thus being driven by it and moving the paper when it arrives. The driven roller contains a bearing and is mounted on the stamp optical axis, allowing it to rotate freely around the axis. The driven roller meshes with the upper stamp roller and, together with the paper feed roller assembly, forms the paper conveying system. In this embodiment, the outer diameter of the driven roller, stamp roller, upper paper feed roller, and lower paper feed roller in contact with the paper is D, and their unfolded circumference along the rotation direction is L. The area between the stamping start point and the stamping end point of the stamp half-roller is the stamping area, and the diameter of the stamp half-roller is also D. The arc length formed by the stamping area is S, and the arc length of the corresponding idle area is K. The unfolded circumference is the same as that of the aforementioned roller: S + K = L. Figure 2 As shown.

[0040] The sensor unit also includes a sensing baffle and a third sensor. The sensing baffle has a sensing groove and is coaxially arranged with the stamp half-roller to rotate synchronously with it. The third sensor is positioned towards the sensing baffle to detect the position of the sensing groove. Additionally, for positioning during installation, there is a stamp positioning hole on the stamp half-roller, which corresponds to the position of the sensing groove on the sensing baffle.

[0041] This embodiment provides a control method for adjustable stamp spacing in a roller stamping device, employing the aforementioned device, and includes the following steps:

[0042] Step 1: Before the paper to be stamped reaches the paper feed roller assembly, the stamp half-roller remains in its initial position where the stamp pattern does not contact the stamp rubber roller. The paper feed roller assembly starts in advance before the paper reaches the assembly and accelerates to the paper feed speed before contacting the paper, then maintains a constant speed. The advance start of the paper feed roller assembly occurs when the first sensor detects the paper. The initial position of the stamp half-roller, where it does not contact the stamp rubber roller, is determined by the position of the sensing groove on the sensing baffle detected by the third sensor; that is, when the third sensor detects the sensing groove on the sensing baffle, the stamp half-roller is in its initial position of not contacting the stamp rubber roller.

[0043] Step 2: After the paper passes through the paper feed roller assembly, the stamp half-roller begins to rotate after a delay time T. When the paper reaches the stamping starting point of the stamp half-roller, it accelerates to the same speed as the paper feed roller assembly. The passage of the paper through the paper feed roller assembly is detected by a second sensor. The delay time T of the stamp half-roller is adjusted based on the distance of the first stamp from the edge of the paper.

[0044] Step 3: After the stamping endpoint of the stamp half-roller leaves the paper, the stamp half-roller enters an idle state. At this time, adjust the idle speed of the stamp half-roller to change the distance between the stamped and unstamped areas on the paper.

[0045] Step 4: Before the stamping starting point of the stamp half-roller contacts the paper again, make the speed of the stamp half-roller the same as that of the paper feed roller assembly.

[0046] Step 5: Before the number of stamps on the paper reaches the predetermined number, repeat steps 3 and 4. After the number of stamps on the paper reaches the predetermined number, stop the stamp half-roller from rotating and keep it in the initial position, then return to step 1 until the next piece of paper to be stamped arrives.

[0047] The following steps, using an A4 sheet of paper as an example, illustrate how to affix three stamps at unequal intervals to an A4 sheet of paper.

[0048] The stamp half-roller is initially in the initial position, and its sensing groove stops at the position of the third sensor.

[0049] A4 paper enters the roller stamping device from the outside. When the A4 paper head reaches and triggers the first sensor, the first sensor outputs a detection signal. The control board issues a paper feeding command, the paper feeding motor starts, and drives the stamp roller and paper feeding roller assembly to rotate in the direction of media movement. The linear speed of the rollers increases from 0 to the preset paper feeding speed V. 纸 To ensure paper feeding accuracy, the paper feed roller assembly must rotate at a speed of V before the A4 paper tip contacts the assembly. 纸 At the same time, the stamp motor drives the stamp half roller to rotate to the initial position, that is, the sensing groove stops at the position of the third sensor.

[0050] A4 paper continues to move at a constant speed V 纸 Moving forward, the paper is conveyed by the paper feed roller assembly. When the paper head reaches and triggers the second sensor, the second sensor outputs a detection signal. After a certain delay T, the stamp motor that drives the stamp half-roller and the stamp optical axis rotate by an angle α. At the same time, the linear velocity of the signature surface increases from 0 to V according to a preset acceleration. 纸 The corresponding acceleration time is t10, and the stamp axis maintains a constant speed V. 纸 Continue rotating by an angle β. The arc length traversed by angle β is M1, which belongs to the non-contact area of ​​the stamp (i.e., the idle area). The corresponding uniform speed period is t11-t10. At this time, the stamping starting point begins to contact the paper and the signing begins. The distance between the stamping starting point and the end of the A4 paper is L0, i.e., (S0+L0) / V. 纸 =T+t10+(t11-t10), by adjusting the delay time T, the distance L0 between the starting point of the signature and the end of the A4 paper can be adjusted accordingly. Setting the uniform speed section M1 before stamping is to ensure that the paper feeding speed is consistent with the stamp speed when stamping, and to ensure that the edge of the signature starting point will not be deformed due to the inconsistent speed of the upper and lower rubber rollers.

[0051] The stamp stick assembly continues to maintain a V-shape. 纸 The stamping speed reaches the distance S of the signature area. At this point, the stamping endpoint is separated from the paper, and the anti-deformation area M2 after the signature is reached. M2 is also the non-contact area of ​​the stamp (i.e., the idle area), which ensures that the edge of the signature endpoint will not be deformed due to the inconsistent speed of the upper and lower rollers. The first signature is now complete.

[0052] Next, the second signature is applied: the distance between the second and first signatures is L1 = Lm, where L is the roll unfolding length. In the time it takes for the A4 paper to advance Lm, the stamp axis needs to travel the circumference of L. To prevent stamp deformation, the stamp roller and the stamp optical axis must move at the same speed during stamping. Therefore, an acceleration zone is designed within the stamp's idle area, allowing it to travel a further distance (m) than the A4 paper in the same amount of time within the acceleration zone. The speed curve of the acceleration zone is set from V... 纸 With acceleration a g Accelerate to V g and in v g It moves at a constant speed for a certain time T1, and then accelerates with negative acceleration a. g Decelerate to V 纸 Then, proceed at a constant speed V. 纸 After passing through the anti-deformation zone M1, the signature zone S, and the anti-deformation zone M2, the second signature is now complete. Adjust the acceleration a... g The constant velocity time T1 allows adjustment of the relative distance m, thereby ensuring that the distance between the second and first stamps is less than the perimeter L, and this value can be adjusted.

[0053] Next, the third signature is applied: the distance between the third and second signatures is L2 = L + m, where L is the roll unfolding length. During the time it takes for the A4 paper to advance L + m, the stamp axis needs to travel the circumference of L. To prevent stamp deformation, the stamp roller and the stamp optical axis must move at the same speed during stamping. Therefore, a deceleration zone is designed within the stamp's idle area, allowing it to travel a shorter distance (m) than the A4 paper in the same amount of time within the deceleration zone. The speed curve of the deceleration zone is set from V... 纸 With negative acceleration a d Decelerate to v d and in v d The vehicle moves at a constant speed for a certain time T2, and then accelerates with a positive acceleration a. d Accelerate to V 纸 Then, proceed at a constant speed V. 纸 After passing through anti-deformation zone M1, signature zone S, and anti-deformation zone M2, the third signature is now complete. This is achieved by adjusting the acceleration a. d The constant speed time T2 allows adjustment of the relative distance m, thereby ensuring that the distance between the third and second stamps is greater than the perimeter L, and this value can be adjusted.

[0054] The A4 paper continues to be fed forward, and the optical axis of the stamp moves from V... 纸 The speed is reduced to 0, then stopped, thus completing the process of printing three stamps with unequal spacing.

Claims

1. A control device for adjustable stamp spacing in a roller stamping device, characterized in that, It includes a paper feeding channel, a paper feeding roller assembly, a sensor unit, a stamp roller, a stamp half-roller, and a driven roller; The paper feeding channel includes an upper feeding board and a lower feeding board, with a gap between the upper feeding board and the lower feeding board for the paper to be stamped to pass through; The paper feed roller assembly includes an upper paper feed roller and a lower paper feed roller that are driven to rotate by a paper feed roller drive device. The axes of the upper paper feed roller and the lower paper feed roller are perpendicular to the paper conveying direction of the paper feeding channel. The upper paper feed board and the lower paper feed board have corresponding upper paper feed roller holes and lower paper feed roller holes. The lower end of the upper paper feed roller and the upper end of the lower paper feed roller pass through the upper paper feed roller hole and the lower paper feed roller hole respectively to contact each other to drive the paper to move. The sensor unit includes a first sensor and a second sensor disposed on the paper feeding channel to detect the paper position in real time, and located on the front and rear sides of the paper feeding roller assembly along the paper feeding direction. The axis of the stamp roller is perpendicular to the paper feeding direction of the paper feeding channel, and the lower end of the stamp roller passes through the upper stamp hole opened in the upper feeding cardboard. The stamp half-roller is a fan-shaped column with a stamp pattern on its surface. The axis of the stamp half-roller is perpendicular to the paper feeding direction of the paper feeding channel, and a lower stamp hole is opened on the lower feeding cardboard. When the surface of the stamp half-roller with the stamp pattern rotates to the paper feeding channel, it passes through the lower stamp hole, thereby clamping the paper in the center with the stamp rubber roller to print the stamp pattern on the paper. The stamp half-roller and the stamp rubber roller are driven by the stamp drive device to rotate, and the rotation speed is independent of the paper feed roller assembly and can be adjusted as needed, thereby controlling the change of stamp spacing. The length of the stamp roller is greater than the length of the stamp half roller. The driven roller is coaxially arranged below the stamp roller with the stamp half roller. The paperboard is fed with a roller hole. The upper end of the driven roller passes through the roller hole to contact the stamp roller, thereby being driven by the stamp roller and driving the paper to move when the paper arrives.

2. The control device for adjustable stamp spacing of a roller stamping device according to claim 1, characterized in that, The sensor unit further includes a sensing baffle and a third sensor. The sensing baffle has a sensing groove and is coaxially arranged with the stamp half-roller to rotate synchronously with the stamp half-roller. The third sensor is arranged toward the sensing baffle to detect the position of the sensing groove.

3. A control method for adjustable stamp spacing in a roller stamping device, characterized in that, The apparatus as described in any one of claims 1 or 2 includes the following steps: Step 1: Before the paper to be stamped reaches the paper feed roller assembly, the stamp half roller remains in the initial position where the stamp pattern does not contact the stamp rubber roller. Step 2: After the paper passes through the paper feed roller assembly, the stamp half roller starts to rotate after a delay time T, and when the paper reaches the stamping starting point of the stamp half roller, the stamp half roller is accelerated to the same speed as the paper feed roller assembly. Step 3: After the stamping endpoint of the stamp half-roller leaves the paper, the stamp half-roller enters an idle state. At this time, adjust the idle speed of the stamp half-roller to change the distance between the stamped and unstamped areas on the paper. Step 4: Before the stamping starting point of the stamp half-roller contacts the paper again, make the speed of the stamp half-roller the same as that of the paper feed roller assembly. Step 5: Before the number of stamps on the paper reaches the predetermined number, repeat steps 3 and 4. After the number of stamps on the paper reaches the predetermined number, stop the stamp half-roller from rotating and keep it in the initial position, then return to step 1 until the next piece of paper to be stamped arrives.

4. The control method for adjustable stamp spacing in a roller stamping device according to claim 3, characterized in that, In step 1, the paper to be stamped will be started in advance before the paper feed roller assembly arrives, and will accelerate to the paper feeding speed before contacting the paper, and then maintain the speed.

5. A control method for adjustable stamp spacing in a roller stamping device according to claim 4, characterized in that, The paper feed roller assembly starts early, meaning it begins to start when the first sensor detects paper.

6. A control method for adjustable stamp spacing in a roller stamping device according to claim 3, characterized in that, In step 1, the stamp half-roller is kept in the initial position of not contacting the stamp rubber roller. This is determined by the third sensor detecting the position of the sensing groove on the sensing baffle. That is, when the third sensor detects the sensing groove on the sensing baffle, the stamp half-roller is in the initial position of not contacting the stamp rubber roller.

7. A control method for adjustable stamp spacing in a roller stamping device according to claim 3, characterized in that, In step 2, the paper passes through the paper feed roller assembly, which is detected by the second sensor.

8. A control method for adjustable stamp spacing in a roller stamping device according to claim 3, characterized in that, In step 2, the delay time T of the stamp half-roller is adjusted according to the distance between the first stamp and the edge of the paper.

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