Automatic Engraving Needle Changing Device and Control Method Based on Printing Roll Pattern Machining

Abstract

This invention discloses an automatic engraving needle replacement device and its control method based on printing plate roller pattern processing, relating to the field of printing plate roller processing equipment. The key technical points are: the automatic engraving needle replacement device is installed on a printing plate roller pattern processing machine. The machine includes a base and a clamping mechanism connected to the top of the base via a support platform. A moving device for driving the engraving needle to move forward, backward, left, and right is installed at the top of the base, behind the support platform. The effect is that after the moving device completes processing with one engraving needle, when another engraving needle needs to be replaced, the intelligent controller first shuts down the moving device. Then, the reciprocating mechanism and motor A are driven to run, thereby replacing the engraving needle through a rotational replacement mechanism. After replacement, both are shut down, and the moving device is restarted according to a pre-set program to continue running, thus achieving automatic engraving needle replacement without manual operation.

Description

Technical Field

[0001] This invention relates to the field of printing plate roller processing equipment, and more specifically, to an automatic engraving needle changing device and its control method based on printing plate roller pattern processing. Background Technology

[0002] In the process of printing plate roller engraving, the engraving needle is a key processing component. Currently, in order to achieve diverse engraving effects, different engraving needles need to be frequently replaced during the processing of printing plate rollers (for example, sharp engraving needles have extremely sharp tips that can engrave extremely fine lines on the surface of the plate roller; special blade-type engraving needles have various blade shapes, such as serrated, wavy, and beveled shapes. Serrated blade-type engraving needles can leave regular serrated marks on the plate roller to simulate specific textures, such as the texture of fabric or the texture of special paper).

[0003] Currently, the replacement of engraving needles in most printing roller pattern processing still relies on manual operation. Manual needle replacement is not only inefficient but also susceptible to human factors, such as inaccurate replacement timing and insufficient installation precision, thus affecting the processing quality and production efficiency of the printing roller. Furthermore, manual operation poses certain safety risks; in high-speed operating environments, manual needle replacement may cause injury to operators (if the needle is replaced before the equipment has completely stopped).

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes an automatic engraving needle changing device and its control method based on printing plate roller pattern processing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an automatic engraving needle replacement device and its control method based on printing plate roller pattern processing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic engraving needle changing device based on printing plate roller pattern processing, wherein the automatic engraving needle changing device is installed on a printing plate roller pattern processing machine table, the printing plate roller pattern processing machine table includes a base and a clamping mechanism connected to the top of the base via a support platform, and a moving device for driving the engraving needle to move back and forth and left and right is installed at the top of the base behind the support platform. The moving device drives the movement of the engraving needle according to a preset program, thereby processing the printing plate roller pattern. The automatic engraving needle changing device is installed on the transmission end of the moving device. The automatic changing device comprises:

[0007] A reciprocating mechanism, which is mounted on the transmission end of the moving device;

[0008] A rotary replacement mechanism includes a motor A fixed to the transmission end of a reciprocating mechanism. A turntable is fixedly connected to the transmission part of the motor A. Multiple connecting rods are arranged in a circumferential array at the top of the turntable, and the heads of the connecting rods are fixed to different engraving needles respectively.

[0009] The intelligent controller is installed on the surface of the reciprocating mechanism. When the moving device finishes processing one engraving needle and another engraving needle needs to be replaced, the intelligent controller first shuts down the moving device, then drives the reciprocating mechanism and motor A to run, thereby replacing the engraving needle through the rotation replacement mechanism. After replacement, both are shut down and the moving device is restarted to continue running according to the preset program.

[0010] Preferably, the reciprocating mechanism includes an upper open shell fixed to the transmission end of the moving device. A reciprocating lead screw driven by motor B is installed inside the upper open shell. A rod sleeve is threadedly connected to the outer side wall of the reciprocating lead screw. A guide rail is fixedly connected to the inner bottom wall of the upper open shell. The bottom end of the rod sleeve is slidably connected to the guide rail by a slider. The slider and the guide rail maintain the linear forward and backward movement of the rod sleeve.

[0011] Preferably, the engraving needle is detachably connected to the fixed turntable via a connecting component, allowing for convenient replacement of the engraving needle.

[0012] Preferably, the connecting assembly includes multiple protrusions welded to the top of the turntable in a circumferential array. The end of the engraving needle is fixedly connected to a through slot seat that can be inserted into the protrusion. A telescopic rod is embedded and fixed in the center of the turntable. The bottom end of the telescopic rod is fixed to the transmission part of the motor A. A fixing plate is fixedly connected to the top of the telescopic rod. When the through slot seat is inserted into the protrusion, the fixing plate is pushed downward to press it against the top of the through slot seat and the protrusion, thereby fixing the through slot seat on the protrusion.

[0013] Preferably, the top of the turntable is also fixedly connected to a plurality of screws arranged in a circumferential array, the inside of the fixing plate is provided with through holes for the screws to pass through, and nuts are threaded onto the outer side wall of the screws.

[0014] Preferably, a cooling water circulation treatment device is installed inside the support platform, and a water tank connected to the circulation treatment device is installed at the top of the support platform, with the clamping mechanism installed in the water tank.

[0015] Preferably, a cabinet door is installed on the surface of the support platform, and a support frame for connecting coolant pipes is fixedly connected to the surface of the upper open shell. The cabinet door is designed to facilitate opening the support platform.

[0016] Preferably, the intelligent controller includes:

[0017] Timer: Used to detect the running time of the moving device that drives the engraving needle according to a preset program. When the set time for changing the engraving needle is reached, a signal is sent to the controller.

[0018] Controller: Based on the signal from the timer, the controller sends a signal to the actuator to first shut down the moving device, then drive the reciprocating mechanism and motor A to run, thereby replacing the engraving needle through the rotary replacement mechanism. After replacement, the controller shuts down both devices and restarts the moving device to continue running according to the pre-set program.

[0019] Actuator: Performs corresponding operations based on signals from the controller;

[0020] Power supply: Used to supply power to the electrical components on intelligent control devices.

[0021] The control method for the above-mentioned automatic engraving needle changing device includes the following steps:

[0022] Step 1: Install multiple engraving needles in a circular array on the top of the turntable via connecting rods, and align the engraving needle to be processed with the printing plate roller held by the clamping mechanism.

[0023] Step 2: The moving device drives the first engraving needle to move according to the preset program, thereby processing the printing plate roller first. At this time, the driving device on the clamping mechanism drives the rotation of the printing plate roller, thereby cooperating with the moving device to process different parts on the printing plate roller.

[0024] Step 3: During the process of the moving device driving the current engraving needle to perform processing, a timer is used to detect the running time of the moving device;

[0025] Step 4: When the timer detects that the running time of the mobile device has reached the set time for changing the engraving needle, it will send a signal to the controller;

[0026] Step 5: Based on the signal from the timer, the controller sends a signal to the actuator to first shut down the moving device, then drive the reciprocating mechanism and motor A to run, thereby replacing the engraving needle through the rotation replacement mechanism. After replacement, both are shut down and the moving device is restarted to continue running according to the preset program. Finally, the actuator performs the corresponding operation.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. This invention achieves automatic needle replacement by first shutting down the mobile device after one engraving needle has finished processing, and then driving the reciprocating mechanism and motor A to replace the engraving needle through the rotational replacement mechanism. After replacement, both are shut down and the mobile device is restarted to continue running according to the preset program, thus achieving automatic needle replacement without manual operation by the operator. This solves the problem in the prior art where the replacement of engraving needles in the printing plate roller pattern processing still relies on manual operation.

[0029] 2. The engraving needle of the present invention is detachably connected to the fixed turntable through the connecting component, so as to facilitate the replacement of the engraving needle when processing different printing rollers or when the engraving needle is damaged.

[0030] 3. The present invention has a cooling water circulation treatment device installed inside the support platform, and a water tank connected to the circulation treatment device is installed at the top of the support platform. The clamping mechanism is installed in the water tank. The coolant pipe connected to the circulation treatment device is connected to the upper open shell through the support frame, and the liquid outlet is opposite to the head of the engraving needle. Thus, when the engraving needle is processing the printing plate roller, the processing part is continuously cooled. The used cooling water falls into the water tank and then re-enters the circulation treatment device for processing and reuse. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0032] Figure 1 This is a schematic diagram of the surface structure of the present invention after being combined with a printing plate roller texture processing machine.

[0033] Figure 2 This is a schematic diagram of the back structure of the present invention after being combined with the printing plate roller texture processing machine.

[0034] Figure 3 For the present invention Figure 1 Enlarged view of the local structure of A;

[0035] Figure 4 This is a schematic diagram of the top surface connection structure of the turntable of the present invention (after removing the fixing plate);

[0036] Figure 5 This is a schematic diagram of the internal structure of the upper-opening shell in this invention;

[0037] Figure 6 This is a schematic diagram of the specific structure of the upper open shell after removing the reciprocating lead screw and the sleeve in this invention.

[0038] In the diagram: 1. Base; 2. Support platform; 3. Clamping mechanism; 4. Moving device; 5. Reciprocating mechanism; 501. Upper open shell; 502. Reciprocating lead screw; 503. Motor B; 504. Rod sleeve; 505. Guide rail; 506. Slider; 6. Rotary replacement mechanism; 601. Motor A; 602. Turntable; 603. Connecting rod; 7. Intelligent control device; 8. Connecting assembly; 801. Protrusion; 802. Through slot seat; 803. Telescopic rod; 804. Fixing plate; 805. Screw; 806. Through hole; 9. Engraving needle; 10. Circulation processing device; 11. Water tank; 12. Cabinet door; 13. Support frame. Detailed Implementation

[0039] This invention designs an automatic engraving needle replacement device based on printing plate roller pattern processing. It is installed on a printing plate roller pattern processing machine. A traditional printing plate roller pattern processing machine includes a base 1 and a clamping mechanism 3 connected to the top of the base 1 via a support platform 2. A moving device 4, which drives the engraving needle 9 to move forward, backward, left, and right, is installed at the top of the base 1 behind the support platform 2. The moving device 4 drives the engraving needle 9 to move according to a pre-set program, thereby processing the printing plate roller pattern. When the engraving needle 9 needs to be replaced, the machine must be stopped and the replacement manually performed, resulting in a series of problems as described in the background section. The automatic engraving needle 9 replacement device designed in this invention effectively solves this problem.

[0040] Example 1

[0041] like Figure 1 and Figure 2 As shown, the automatic changing device for engraving needle 9 based on printing plate roller pattern processing provided by the present invention includes:

[0042] The reciprocating mechanism 5 is mounted on the transmission end of the moving device 4;

[0043] The rotary replacement mechanism 6 includes a motor A601 fixed to the transmission end of the reciprocating mechanism 5. A turntable 602 is fixedly connected to the transmission part of the motor A601. Multiple connecting rods 603 are arranged in a circumferential array at the top of the turntable 602. The heads of the connecting rods 603 are fixed to different engraving needles 9 respectively. The motor A601 drives the turntable 602 to rotate, thereby rotating with multiple sets of engraving needles 9 to replace the engraving needles 9.

[0044] The intelligent control device 7 is disposed on the surface of the reciprocating mechanism 5.

[0045] Before use, multiple engraving needles 9 (i.e., a complete set of engraving needles 9 required for processing the printing plate roller) are installed in a circular array on the top of the turntable 602 via the connecting rod 603. During use, the engraving needle 9 to be processed is first placed opposite the printing plate roller held by the clamping mechanism 3. The moving device 4 drives the first engraving needle 9 to move according to the preset program, thereby processing the printing plate roller first. At this time, the driving device on the clamping mechanism 3 drives the rotation of the printing plate roller, thereby cooperating with the moving device 4 to process different parts on the printing plate roller. After the moving device 4 drives one engraving needle 9 to complete the processing, when it is necessary to replace another engraving needle 9 for processing, the intelligent control device 7 first shuts down the moving device 4, and then drives the reciprocating mechanism 5 and the motor A601 to run, thereby replacing the engraving needle 9 through the rotation replacement mechanism 6. After replacement, both are shut down and the moving device 4 is restarted to continue running according to the preset program, thereby achieving the purpose of automatically replacing the engraving needle 9 without the need for manual operation by the operator.

[0046] Example 2

[0047] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 This embodiment illustrates the specific structure of the reciprocating mechanism 5 and the intelligent controller 7 in Embodiment 1:

[0048] The reciprocating mechanism 5 includes an upper open shell 501 fixed on the transmission end of the moving device 4. A reciprocating lead screw 502 driven by a motor B503 is installed inside the upper open shell 501. A rod sleeve 504 is threadedly connected to the outer side wall of the reciprocating lead screw 502. A guide rail 505 is fixedly connected to the inner bottom wall of the upper open shell 501. The bottom end of the rod sleeve 504 is slidably connected to the guide rail 505 through a slider 506.

[0049] The motor B503 drives the reciprocating lead screw 502 to rotate, which in turn drives the sleeve 504 to move back and forth. The sleeve 504 then drives the slider 506 to move. The slider 506 slides along the guide rail 505 to maintain the linear movement of the sleeve 504. The sleeve 504 then drives the rotary replacement mechanism 6 to move back and forth. This prevents the rotary replacement mechanism 6 from colliding with the printing roller during the rotation of the engraving needle 9, thus avoiding damage to both the printing roller and the engraving needle 9. After the engraving needle 9 is replaced, the rotary replacement mechanism 6 and the replaced engraving needle 9 are reset (returned to the processing position).

[0050] Meanwhile, the friction between the engraving needle 9 and the surface of the printing roller generates a large amount of heat. To prevent the engraving needle 9 from being damaged by heat, a cooling water circulation treatment device is usually installed inside the support platform 2, and a water tank 11 connected to the circulation treatment device is installed at the top of the support platform 2. The clamping mechanism 3 is installed in the water tank 11. The coolant pipe connected to the circulation treatment device is connected to the upper open shell 501 through the support frame 10 (the support frame 10 is installed on the surface of the upper open shell 501 opposite to the intelligent controller 7), and the liquid outlet is opposite to the head of the engraving needle 9. Thus, when the engraving needle 9 processes the printing roller, the processing part is continuously cooled. The used cooling water falls into the water tank 11 and then re-enters the circulation treatment device for processing and reuse. A cabinet door is installed on the surface of the support platform 2 to facilitate opening the support platform 2 and thus facilitate the maintenance of its internal circulation treatment device.

[0051] The intelligent control device 7 includes a timer, a controller, a power supply, and a controller.

[0052] During the processing of the current engraving needle 9 by the moving device 4, the timer begins to function. Like a precise timekeeper, it continuously monitors the running time of the moving device 4. This running time is calculated from the moment the moving device 4 begins processing the current engraving needle 9. The time setting for replacing the engraving needle 9 is predetermined based on various factors such as the processing requirements of the printing roller, the material of the engraving needle 9, and its expected lifespan. When the timer detects that the running time of the moving device 4 has reached the predetermined time for replacing the engraving needle 9, it immediately sends a specific signal to the controller. This signal acts as an instruction, informing the controller that the engraving needle 9 needs to be replaced. Upon receiving the signal from the timer, the controller quickly begins to operate according to the preset control logic. It first sends a signal to the actuator to shut down the moving device 4. Upon receiving this signal, the actuator immediately performs the corresponding operation, cutting off the power supply to the moving device 4, causing it to stop running. This ensures that no unnecessary relative movement occurs between the engraving needle 9 and the printing roller during the replacement process, guaranteeing the safety and accuracy of the replacement operation. After the moving device 4 is successfully shut down, the controller immediately sends a signal to the actuator to start the reciprocating mechanism 5 and motor A601. Upon receiving this signal, the actuator provides power to the reciprocating mechanism 5 (driving motor B503 on the reciprocating mechanism 5) and motor A601, initiating their operation. Motor A601 rotates the next engraving needle 9 to the correct position relative to the printing roller. During this process, the reciprocating mechanism 5 moves the turntable 602 back and forth, ultimately completing the replacement of the engraving needle 9. (It should be noted that the reciprocating mechanism 5 must start running earlier than motor B503, allowing the engraving needle 9 to move a certain distance away from the printing roller before rotating.) After the rotating replacement mechanism 6 completes the replacement of the engraving needle 9, the controller sends another signal to the actuator, this time requesting the actuator to shut down the reciprocating mechanism 5 and motor A601. Upon receiving the instruction, the actuator stops supplying power to these two components, stopping their operation and completing the engraving needle 9 replacement process. Finally, the controller sends a signal to the actuator to restart the moving device 4. After receiving the signal, the actuator will provide power to the mobile device 4 again, allowing the mobile device 4 to continue operating according to the preset program. During this process, the power supply provides power to the electrical components on the controller.

[0053] Example 3

[0054] like Figure 1 - Figure 4As shown, in this embodiment, based on embodiment 1, the engraving needle 9 is detachably connected to the fixed turntable 602 via the connecting component 8, so as to facilitate the replacement of the engraving needle 9 when processing different printing rollers (the engraving needle 9 used for processing different printing rollers is also different) or when the engraving needle 9 is damaged.

[0055] The connecting component 8 includes multiple protrusions 801 welded to the top of the turntable 602 in a circumferential array. The end of the engraving needle 9 is fixedly connected to a through slot seat 802 that can be inserted into the protrusions 801. A telescopic rod 803 is embedded and fixed in the center of the turntable 602. The bottom end of the telescopic rod 803 is fixed to the transmission part of the motor A601. A fixing plate 804 is fixedly connected to the top of the telescopic rod 803. When the through slot seat 802 is inserted into the protrusion 801, the fixing plate 804 is pushed to move downward, pressing it against the top of the through slot seat 802 and the protrusion 801, thereby fixing the through slot seat 802 onto the protrusion 801. Multiple screws 805 in a circumferential array are also fixedly connected to the top of the turntable 602. The fixing plate 804 has through holes 806 for the screws 805 to pass through. Nuts are threaded onto the outer side wall of the screws 805.

[0056] When installing the engraving needles 9, insert the slotted seats 802 on the back of multiple engraving needles 9 into the protrusions 801 on the turntable 602. After insertion (at this time, the protrusions 801 are close to the inner wall of the slotted seat 802, and the top surfaces of both are flush), push the fixing plate 804 downward, and the telescopic rod 803 will shorten accordingly to maintain the linear movement of the fixing plate 804. The fixing plate 804 presses it down onto the top of the slotted seat 802 and the protrusions 801, thereby fixing the slotted seat 802 onto the protrusions 801. The screws on the turntable 602... The rod 805 passes through the through hole 806 on the fixing plate 804. Then, the nut is rotated clockwise to install the nut on the screw rod 805. The nut moves downward along the screw rod 805 and slowly abuts against the top of the fixing plate 804, thereby fixing the fixing plate 804 to the top of the through slot seat 802 and the protrusion 801, thus completing the installation of the engraving needle 9. Similarly, the nut is removed, the fixing plate 804 is pushed upward, and the through slot seat 802 is pulled off the protrusion 801 to complete the disassembly of the engraving needle 9, which can be easily replaced.

[0057] The present invention also provides a control method for the above-mentioned automatic engraving needle changing device:

[0058] Step 1: Install multiple engraving needles 9 in a circular array on the top of the turntable 602 via the connecting rod 603, and align the engraving needle 9 to be processed with the printing plate roller held by the clamping mechanism 3.

[0059] Step 2: The moving device 4 drives the first engraving needle to move according to the preset program, so as to process the printing plate roller first. At this time, the driving device on the clamping mechanism 3 drives the rotation of the printing plate roller, so as to cooperate with the moving device 4 to process different parts on the printing plate roller.

[0060] Step 3: During the process of the moving device 4 driving the current engraving needle 9 to perform processing, the running time of the moving device 4 is detected by a timer;

[0061] Step 4: When the timer detects that the running time of the moving device 4 has reached the set time for replacing the engraving needle 9, it will send a signal to the controller;

[0062] Step 5: Based on the signal from the timer, the controller sends a signal to the actuator to first shut down the moving device 4, then drive the reciprocating mechanism 5 and motor A601 to run, thereby replacing the engraving needle 9 through the rotation replacement mechanism 6. After replacement, both are shut down and the moving device 4 is restarted to continue running according to the preset program. Finally, the actuator performs the corresponding operation.

[0063] The automatic engraving needle changing device and its control method based on printing plate roller texture processing of the present invention have the following advantages:

[0064] When a carving needle is finished by the mobile device, and another carving needle needs to be replaced, the intelligent controller first shuts down the mobile device, and then drives the reciprocating mechanism and motor A to replace the carving needle through the rotation replacement mechanism. After replacement, both are shut down and the mobile device is restarted to continue running according to the preset program, thus achieving the purpose of automatic replacement of carving needles without the need for manual operation by the staff.

[0065] The engraving needle of this invention is detachably connected to the fixed turntable via a connecting component, so as to facilitate the replacement of the engraving needle when processing different printing rollers or when the engraving needle is damaged.

[0066] The present invention includes a cooling water circulation treatment device installed inside the support platform, and a water tank connected to the circulation treatment device installed at the top of the support platform. The clamping mechanism is installed in the water tank. The coolant pipe connected to the circulation treatment device is connected to the upper open shell through the support frame, and the outlet is opposite to the head of the engraving needle. Thus, when the engraving needle is processing the printing plate roller, the processing part is continuously cooled. The used cooling water falls into the water tank and then re-enters the circulation treatment device for processing and reuse.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. An automatic engraving needle changing device based on printing plate roller pattern processing, wherein the automatic engraving needle changing device is installed on a printing plate roller pattern processing machine, the printing plate roller pattern processing machine includes a base (1) and a clamping mechanism (3) connected to the top of the base (1) via a support platform (2), the top of the base (1) is located behind the support platform (2) and a moving device (4) is installed to drive the engraving needle (9) to move back and forth and left and right, the moving device (4) drives the engraving needle (9) to move according to a preset program, thereby processing the printing plate roller pattern, the automatic engraving needle changing device is installed on the transmission end of the moving device (4), characterized in that: The automatic replacement device includes: The reciprocating mechanism (5) is installed on the transmission end of the moving device (4); The rotary replacement mechanism (6) includes a motor A (601) fixed on the transmission end of the reciprocating mechanism (5). A turntable (602) is fixedly connected to the transmission part of the motor A (601). Multiple connecting rods (603) are arranged in a circular array at the top of the turntable (602). The heads of the connecting rods (603) are fixed to different engraving needles (9). The intelligent control device (7) is set on the surface of the reciprocating mechanism (5). When the moving device (4) drives one engraving needle (9) to complete the processing and another engraving needle (9) needs to be replaced for processing, the intelligent control device (7) first shuts down the moving device (4), and then drives the reciprocating mechanism (5) and motor A (601) to run, thereby replacing the engraving needle (9) through the rotation replacement mechanism (6). After the replacement is completed, both are shut down and the moving device (4) is restarted to continue running according to the preset program. The engraving needle (9) is detachably connected to the fixed turntable (602) via the connecting assembly (8); The connecting assembly (8) includes a plurality of protrusions (801) welded to the top of the turntable (602) in a circular array. The end of the engraving needle (9) is fixedly connected to a slot seat (802) that can be inserted into the protrusions (801). A telescopic rod (803) is embedded and fixed in the center of the turntable (602). The bottom end of the telescopic rod (803) is fixed to the transmission part of the motor A (601). A fixing plate (804) is fixedly connected to the top of the telescopic rod (803). When the slot seat (802) is inserted into the protrusion (801), the fixing plate (804) is pushed to move downward, pressing it against the top of the slot seat (802) and the protrusion (801), thereby fixing the slot seat (802) on the protrusion (801). The top of the turntable (602) is also fixedly connected to a plurality of screws (805) arranged in a circumferential array. The interior of the fixing plate (804) is provided with through holes (806) for the screws (805) to pass through. Nuts are threaded onto the outer side wall of the screws (805).

2. The automatic engraving needle changing device based on printing plate roller pattern processing according to claim 1, characterized in that: The reciprocating mechanism (5) includes an upper open shell (501) fixed on the transmission end of the moving device (4). A reciprocating screw (502) driven by a motor B (503) is installed inside the upper open shell (501). A rod sleeve (504) is threadedly connected to the outer side wall of the reciprocating screw (502). A guide rail (505) is fixedly connected to the inner bottom wall of the upper open shell (501). The bottom end of the rod sleeve (504) is slidably connected to the guide rail (505) through a slider (506).

3. The automatic engraving needle changing device based on printing plate roller pattern processing according to claim 2, characterized in that: The support platform (2) is equipped with a cooling water circulation treatment device inside, and a water tank (11) connected to the circulation treatment device is installed at the top of the support platform (2). The clamping mechanism (3) is installed in the water tank (11).

4. The automatic engraving needle changing device based on printing plate roller pattern processing according to claim 3, characterized in that: The support platform (2) is equipped with a cabinet door (12), and the surface of the upper open shell (501) is fixedly connected with a support frame (10) for connecting the coolant pipe.

5. The automatic engraving needle changing device based on printing plate roller pattern processing according to claim 1, characterized in that: The intelligent control device (7) includes: Timer: Used to detect the running time of the moving device (4) that drives the engraving needle (9) to move according to the preset program. When the set time for replacing the engraving needle (9) is reached, a signal is sent to the controller. Controller: Based on the signal sent by the timer, the controller sends a signal to the actuator to first shut down the moving device (4), then drive the reciprocating mechanism (5) and motor A (601) to run, thereby replacing the engraving needle (9) through the rotation replacement mechanism (6), and after the replacement is completed, shut down both and restart the moving device (4) according to the preset program. Actuator: Performs corresponding operations based on signals from the controller; Power supply: Used to supply power to the electrical components on the intelligent control device (7).

6. A control method for the automatic engraving needle changing device according to any one of claims 1-2 and 5, characterized in that: Includes the following steps: Step 1: Install multiple engraving needles (9) in a circular array on the top of the turntable (602) via the connecting rod (603) on them, and align the engraving needle (9) to be processed with the printing plate roller held by the clamping mechanism (3); Step 2: The moving device (4) drives the first engraving needle to move according to the preset program, so as to process the printing plate roller first. At this time, the driving device on the clamping mechanism (3) drives the rotation of the printing plate roller, so as to cooperate with the moving device (4) to process different parts on the printing plate roller. Step 3: During the process of the moving device (4) driving the current engraving needle (9) to perform processing, the running time of the moving device (4) is detected by a timer; Step 4: When the timer detects that the running time of the moving device (4) has reached the set time for changing the engraving needle (9), it will send a signal to the controller; Step 5: The controller sends a signal to the actuator based on the signal from the timer. First, the moving device (4) is turned off. Then, the reciprocating mechanism (5) and motor A (601) are driven to run, thereby replacing the engraving needle (9) through the rotation replacement mechanism (6). After the replacement is completed, both are turned off and the moving device (4) is restarted according to the pre-set program. Finally, the actuator performs the corresponding operation.

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