Engraving needle automatic replacing device based on printing plate roller pattern machining and control method of engraving needle automatic replacing device

Abstract

The invention discloses an automatic carving needle replacing device based on printing plate roller pattern processing and a control method thereof, and relates to the field of printing plate roller processing equipment, the key points of the technical scheme are that the automatic carving needle replacing device is mounted on a printing plate roller pattern processing machine table, and the printing plate roller pattern processing machine table comprises a base; the carving device comprises a base and a clamping mechanism connected with the top end of the base through a supporting table, and a moving device for driving a carving needle to move front and back and left and right is installed at the position, located behind the supporting table, of the top end of the base. The moving device is firstly closed through the intelligent control device, then the reciprocating mechanism and the motor A are driven to operate, the carving needle is replaced through the rotary replacement mechanism, the moving device and the rotary replacement mechanism are closed after replacement is completed, the moving device is started again to operate according to a preset program, and therefore the purpose of automatically replacing the carving needle is achieved. And manual operation of workers is not needed.

Description

Technical Field

[0001] The invention relates to the field of printing plate roller processing equipment, and more specifically, to an automatic replacement device for engraving needles based on printing plate roller pattern processing and a control method thereof. Background Art

[0002] In the process of printing plate roller pattern processing, engraving needles are key processing components. At present, in order to achieve a variety of pattern effects, printing plate rollers need to frequently replace different engraving needles for processing during processing (for example: the sharp engraving needle tip is extremely sharp, which can engrave extremely fine lines on the surface of the plate roller, and the special blade engraving needle has a variety of blade shapes, such as serrated, wavy, beveled, etc. The serrated edge engraving needle can leave regular serrated marks on the plate roller, which is used to simulate specific textures, such as the texture of cloth, the texture of special paper, etc.).

[0003] At present, most of the replacement of engraving needles in the process of printing plate roller pattern processing still relies on manual operation. Manual replacement of engraving needles is not only inefficient, but also easily affected by human factors, such as inaccurate replacement time, insufficient installation accuracy, etc., which affects the processing quality and production efficiency of the plate roller. In addition, manual operation also has certain safety risks. In some high-speed equipment environments, manual replacement of engraving needles may cause harm to the operator (the engraving needle is replaced before the equipment is completely stopped).

[0004] Therefore, in order to solve the above technical problems, the present application proposes an automatic engraving needle replacement device based on printing plate roller pattern processing and a control method thereof. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide an automatic engraving needle replacement device based on printing plate roller pattern processing and a control method thereof.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: an automatic replacement device for engraving needles based on printing plate roller pattern processing, the automatic replacement device for engraving needles is installed on a printing plate roller pattern processing machine, the printing plate roller pattern processing machine includes a base, and a clamping mechanism connected to the top of the base through a support platform, the top of the base is located behind the support platform and is equipped with a moving device for driving the engraving needle to move forward and backward and left and right, the moving device drives the movement of the engraving needle according to a pre-set program, so as to process the printing plate roller pattern, the automatic replacement device for engraving needles is installed on the transmission end of the moving device, and is characterized in that: the automatic replacement device includes: A reciprocating mechanism, which is arranged on the transmission end of the moving device; The rotary replacement mechanism includes a motor A fixed on the transmission end of the reciprocating mechanism, a rotating disk is fixedly connected to the transmission part of the motor A, and a plurality of connecting rods are distributed in a circular array on the top of the rotating disk, which are respectively fixed to different engraving needles through the heads of the connecting rods; The intelligent control device is arranged on the surface of the reciprocating mechanism. After the mobile device drives an engraving needle to complete processing, when another engraving needle needs to be replaced for processing, the mobile device is first turned off by the intelligent control device, and then the reciprocating mechanism and motor A are driven to operate, so as to replace the engraving needle through the rotating replacement mechanism. After the replacement, both are turned off and the mobile device is started again to continue to operate according to the pre-set program.

[0007] Preferably, the reciprocating mechanism includes an upper open shell fixed on the transmission end of the moving device, a reciprocating screw driven by a motor B is installed inside the upper open shell, a rod sleeve is threadedly connected to the outer wall of the reciprocating 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 through a slider, and the forward and backward linear movement of the rod sleeve is maintained by the slider and the guide rail.

[0008] Preferably, the engraving needle is detachably connected to the fixed turntable via a connecting assembly, so that the engraving needle can be replaced conveniently.

[0009] Preferably, the connecting assembly includes a plurality of raised portions welded to the top of the turntable and distributed in a circular array, the end of the engraving needle is fixedly connected to a through slot seat that can be inserted into the raised portion, 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, and a fixing plate is fixedly connected to the top of the telescopic rod. When the through slot seat is inserted into the raised portion, the fixing plate is pushed downward to be pressed against the through slot seat and the top of the raised portion, thereby fixing the through slot seat on the raised portion.

[0010] Preferably, a plurality of screw rods distributed in a circular array are fixedly connected to the top of the turntable, a through hole for the screw rods to pass through is provided inside the fixing plate, and a nut is threadedly connected to the outer side wall of the screw rod.

[0011] Preferably, a cooling water circulation treatment device is installed inside the support platform, a water tank connected to the circulation treatment device is installed on the top of the support platform, and the clamping mechanism is installed in the water tank.

[0012] Preferably, a cabinet door is installed on the surface of the support platform, and a support frame for connecting the coolant pipe is fixedly connected to the surface of the upper opening shell. The design of the cabinet door facilitates the opening of the support platform.

[0013] Preferably, the intelligent control device comprises: Timer: used to detect the running time of the moving device that drives the engraving needle to move according to the pre-set program, and send a signal to the controller when the set time for replacing the engraving needle is reached; Controller: According to the signal sent by 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 operate, thereby replacing the engraving needle through the rotating replacement mechanism. After the replacement, the two are shut down and the moving device is started again to continue to operate according to the pre-set program; Actuator: performs corresponding operations according to the signal from the controller; Power supply: used to supply power to electrical components on intelligent control devices.

[0014] The control method of the above engraving needle automatic replacement device comprises the following steps: Step 1: multiple engraving needles are installed on the top of the turntable in a circular array through the connecting rods thereon, and the engraving needle to be processed first is placed opposite to the printing plate roller clamped by the clamping mechanism; Step 2: The mobile device drives the first engraving needle to move according to a preset program, so as to first process the printing plate roller. At this time, the driving device on the clamping mechanism drives the rotation of the printing plate roller, so as to cooperate with the mobile device to process different parts of the printing plate roller; Step 3: When the mobile device drives the current engraving needle to process, the timer detects the running time of the mobile device; Step 4: When the timer detects that the running time of the mobile device has reached the set time to replace the engraving needle, it will send a signal to the controller. Step 5: According to the signal sent by the timer, the actuator is sent a signal to first shut down the mobile device, and then drive the reciprocating mechanism and motor A to operate, so as to replace the engraving needle through the rotating replacement mechanism. After the replacement, both are shut down and the mobile device is started again to continue to operate according to the pre-set program, and finally the actuator performs the corresponding operation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, after a mobile device drives an engraving needle to complete processing, when another engraving needle needs to be replaced for processing, the mobile device is first turned off by the intelligent control device, and then the reciprocating mechanism and the motor A are driven to operate, so as to replace the engraving needle through the rotating replacement mechanism. After the replacement, both are turned off and the mobile device is started again to continue to operate according to a preset program, so as to achieve the purpose of automatically replacing the engraving needle without manual operation by the staff, thereby solving the problem that the replacement of the engraving needle in the process of printing plate roller pattern processing in the background technology still relies on manual operation; 2. The engraving needle of the present invention is detachably connected to the fixed turntable through a connecting assembly, so that the engraving needle can be easily replaced when processing different printing plate rollers or when the engraving needle is damaged; 3. A cooling water circulation treatment device is installed in the support platform of the present invention, and a water tank connected to the circulation treatment device is installed on the top of the support platform. The clamping mechanism is installed in the water tank. The cooling liquid pipe connected to the circulation treatment device is connected to the upper opening shell through the support frame, and the liquid outlet is opposite to the head of the engraving needle. Therefore, when the engraving needle processes the printing plate roller, the processing part is continuously cooled, and the used cooling water falls into the water tank, and then enters the circulation treatment device again for treatment, and then is used again. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the surface structure after the present invention is combined with a printing plate roller pattern processing machine; Figure 2 It is a schematic diagram of the back structure of the present invention combined with a printing plate roller pattern processing machine; Figure 3 For the present invention Figure 1 A local structure enlarged view; 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); Figure 5 It is a schematic diagram of the internal structure of the upper opening shell in the present invention; Figure 6 This is a schematic diagram of the specific structure of the upper opening shell of the present invention after removing the reciprocating screw rod and the rod sleeve.

[0017] In the figure: 1. base; 2. support table; 3. clamping mechanism; 4. moving device; 5. reciprocating mechanism; 501. upper opening shell; 502. reciprocating screw rod; 503. motor B; 504. rod sleeve; 505. guide rail; 506. slider; 6. rotation replacement mechanism; 601. motor A; 602. turntable; 603. connecting rod; 7. intelligent control device; 8. connecting component; 801. protrusion; 802. through groove seat; 803. telescopic rod; 804. fixing plate; 805. screw rod; 806. through hole; 9. engraving needle; 10. circulation treatment device; 11. sink; 12. cabinet door; 13. support frame. DETAILED DESCRIPTION

[0018] The present invention designs an automatic replacement device for engraving needles based on printing plate roller pattern processing, which is installed on a printing plate roller pattern processing machine. The traditional printing plate roller pattern processing machine includes a base 1 and a clamping mechanism 3 connected to the top of the base 1 through a support platform 2. The top of the base 1 is located behind the support platform 2 and is equipped with a moving device 4 for driving the engraving needle 9 to move forward and backward and left and right. The moving device 4 drives the movement of the engraving needle 9 according to a preset program, thereby processing the printing plate roller pattern. When the engraving needle 9 needs to be replaced, the machine needs to be stopped and replaced manually, which produces a series of problems as the background technology. The automatic replacement device for engraving needle 9 designed by the present invention can effectively solve this problem.

[0019] Example 1 like Figure 1 and Figure 2 As shown, the present invention provides an automatic replacement device for engraving needles 9 based on printing plate roller pattern processing, comprising: A reciprocating mechanism 5, which is arranged on the transmission end of the moving device 4; The rotary replacement mechanism 6 includes a motor A601 fixed on the transmission end of the reciprocating mechanism 5, and a turntable 602 is fixedly connected to the transmission part of the motor A601. A plurality of connecting rods 603 are distributed in a circular array on the top of the turntable 602. The heads of the connecting rods 603 are respectively fixed to different engraving needles 9. The motor A601 drives the turntable 602 to rotate, thereby rotating with multiple groups of engraving needles 9 to replace the engraving needles 9.

[0020] The intelligent control device 7 is arranged on the surface of the reciprocating mechanism 5 .

[0021] Before use, a plurality of engraving needles 9 (i.e., a complete set of engraving needles 9 required for processing the printing plate roller) are installed on the top of the turntable 602 in a circular array distribution through the connecting rods 603 thereon. When in use, the engraving needle 9 to be processed first is first placed opposite to the printing plate roller clamped by the clamping mechanism 3, and the mobile device 4 drives the movement of the first engraving needle 9 according to a preset program, so that the printing plate roller is first processed. At this time, the rotation of the printing plate roller is driven by the driving device on the clamping mechanism 3, so that different parts on the printing plate roller are processed in cooperation with the mobile device 4. After the mobile device 4 drives one engraving needle 9 to complete the processing, when another engraving needle 9 needs to be replaced for processing, the mobile device 4 is first turned off by the intelligent control device 7, and then the reciprocating mechanism 5 and the motor A601 are driven to operate, so that the engraving needle 9 is replaced by the rotating replacement mechanism 6. After the replacement, both are turned off and the mobile device 4 is started again to continue to operate according to the preset program, so as to achieve the purpose of automatically replacing the engraving needle 9 without manual operation by the staff.

[0022] Example 2 like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 This embodiment provides the specific structure of the reciprocating mechanism 5 and the intelligent control device 7 in Embodiment 1: The reciprocating mechanism 5 includes an upper open shell 501 fixed on the transmission end of the moving device 4, and a reciprocating screw rod 502 driven by a motor B503 is installed inside the upper open shell 501. A rod sleeve 504 is threadedly connected to the outer wall of the reciprocating screw rod 502, and 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.

[0023] That is, the motor B503 drives the reciprocating screw rod 502 to rotate, the reciprocating screw rod 502 drives the rod sleeve 504 to move forward and backward, the rod sleeve 504 drives the movement of the slider 506, and the slider 506 slides along the guide rail 505 to maintain the linear movement of the rod sleeve 504. The rod sleeve 504 can drive the rotating replacement mechanism 6 to move forward and backward, so that when the rotating replacement mechanism 6 replaces the engraving needle 9, it is moved backward to avoid the engraving needle 9 from colliding with the printing plate roller when rotating, thereby causing damage to the printing plate roller and the engraving needle 9. After the engraving needle 9 is replaced, the rotating replacement mechanism 6 and the replaced engraving needle 9 are reset (back to the processing position).

[0024] At the same time, the friction between the engraving needle 9 and the surface of the printing plate roller will generate a large amount of heat. To prevent the engraving needle 9 from being damaged by heat, a cooling water circulation treatment device is often installed in 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, and the clamping mechanism 3 is installed in the water tank 11, and the cooling liquid pipe connected to the circulation treatment device is connected to the upper opening shell 501 through the support frame 10 (the support frame 10 is installed on the surface of the upper opening shell 501 opposite to the intelligent control device 7), and the liquid outlet is opposite to the head of the engraving needle 9, so that when the engraving needle 9 processes the printing plate roller, the processing part is continuously cooled, and the used cooling water falls into the water tank 11, and then enters the circulation treatment device again for treatment, and then is used again, and a cabinet door is installed on the surface of the support platform 2 to facilitate the opening of the support platform 2, thereby facilitating the inspection and maintenance of the circulation treatment device inside it.

[0025] The intelligent control device 7 includes a timer, a controller, a control unit and a power supply.

[0026] During the process of the mobile device 4 driving the current engraving needle 9 for processing, the timer starts to play a role. It is like an accurate timekeeper, continuously monitoring the running time of the mobile device 4. This running time is calculated from the moment when the mobile device 4 starts to drive the current engraving needle 9 for processing. The time setting for replacing the engraving needle 9 is predetermined according to various factors such as the processing requirements of the printing plate roller, the material of the engraving needle 9 and the expected service life. When the timer detects that the running time of the mobile device 4 has reached the set time for replacing the engraving needle 9, it will immediately send a specific signal to the controller. This signal is like an instruction, telling the controller that the engraving needle 9 needs to be replaced. After receiving the signal from the timer, the controller quickly starts working according to the preset control logic. It first sends a signal to the actuator to shut down the mobile device 4. After receiving this signal, the actuator immediately performs the corresponding operation, cuts off the power supply of the mobile device 4, and stops the mobile device 4, thereby ensuring that during the process of replacing the engraving needle 9, no unnecessary relative movement occurs between the engraving needle 9 and the printing plate roller, ensuring the safety and accuracy of the replacement operation. After the mobile device 4 is successfully closed, the controller immediately sends a signal to the actuator to start the reciprocating mechanism 5 and the motor A601. After receiving the signal, the actuator provides power drive to the reciprocating mechanism 5 (driving the motor B503 on the reciprocating mechanism 5) and the motor A601, so that both start to run. The next engraving needle 9 to be used is rotated to the correct position relative to the printing plate roller by the motor A601. During this process, the reciprocating mechanism 5 reciprocates the turntable 602, and finally completes the replacement operation of the engraving needle 9 (it should be noted that the running time of the reciprocating mechanism 5 needs to be earlier than the running time of the motor B503, so that the engraving needle 9 can be rotated after a certain distance from the printing plate roller). After the rotating replacement mechanism 6 completes the replacement of the engraving needle 9, the controller sends a signal to the actuator again, and this time the signal is to require the actuator to shut down the reciprocating mechanism 5 and the motor A601. After receiving the instruction, the actuator stops supplying power to these two components, causing them to stop running, and completes the related actions of replacing the engraving needle 9. Finally, the controller sends a signal to the actuator to start the mobile device 4 again. After receiving the signal, the actuator supplies power to the mobile device 4 again, allowing the mobile device 4 to continue to operate according to the pre-set program. During this process, the power supply supplies power to the electrical components on the control device.

[0027] Example 3 like Figure 1 - Figure 4 As shown, in this embodiment, based on the embodiment 1, the engraving needle 9 is detachably connected to the fixed turntable 602 through the connecting component 8, so as to realize convenient replacement of the engraving needle 9 when processing different printing plate rollers (the engraving needles 9 used for processing different printing plate rollers are also different) or when the engraving needle 9 is damaged.

[0028] The connecting component 8 includes a plurality of protrusions 801 welded to the top of the turntable 602 and distributed in a circular array. The end of the engraving needle 9 is fixedly connected to a through-slot seat 802 that can be inserted into the protrusion 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 downward to press it against the through-slot seat 802 and the top of the protrusion 801, thereby fixing the through-slot seat 802 on the protrusion 801. The top of the turntable 602 is also fixedly connected to a plurality of screws 805 distributed in a circular array. A through hole 806 is provided inside the fixing plate 804 for the screw 805 to pass through, and a nut is threadedly connected to the outer wall of the screw 805.

[0029] When installing the engraving needles 9, the through-slot seats 802 on the back of the plurality of engraving needles 9 are inserted into the raised portions 801 on the turntable 602. After the insertion is completed (at this time, the raised portions 801 are close to the inner side walls of the through-slot seats 802, and the top surfaces of the two are flush), the fixing plate 804 is pushed downward, and the telescopic rod 803 is shortened accordingly to maintain the linear movement of the fixing plate 804. The fixing plate 804 is pressed downward onto the tops of the through-slot seats 802 and the raised portions 801, thereby fixing the through-slot seats 802 on the raised portions 801, and the screws on the turntable 602 are screwed into the fixing plate 804. The rod 805 passes through the through hole 806 on the fixing plate 804, and then the nut is installed on the screw rod 805 by turning the nut clockwise. The nut moves downward along the screw rod 805 and slowly presses against the top of the fixing plate 804, thereby fixing the fixing plate 804 to the top of the through groove seat 802 and the raised portion 801, and the installation of the engraving needle 9 is completed. Similarly, the nut is removed, the fixing plate 804 is pushed upward, and the through groove seat 802 is pulled off the raised portion 801, and the disassembly of the engraving needle 9 is completed, and the engraving needle 9 can be easily replaced.

[0030] The present invention also provides a control method for the above-mentioned engraving needle automatic replacement device: Step 1: multiple engraving needles 9 are installed on the top of the turntable 602 in a circumferential array distribution through the connecting rods 603 thereon, and the engraving needles 9 to be processed first are placed opposite to the printing plate roller clamped by the clamping mechanism 3; Step 2: The mobile device 4 drives the first engraving needle 9 to move according to a preset program, so as to first process the printing plate roller. 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 mobile device 4 to process different parts of the printing plate roller. Step 3: When the mobile device 4 drives the current engraving needle 9 to perform processing, the timer detects the running time of the mobile device 4; Step 4: When the timer detects that the running time of the mobile device 4 reaches the set time for replacing the engraving needle 9, it will send a signal to the controller, and the controller Step 5: According to the signal sent by the timer, the actuator is sent a signal to first shut down the mobile device 4, and then drive the reciprocating mechanism 5 and the motor A601 to operate, so as to replace the engraving needle 9 by rotating the replacement mechanism 6. After the replacement, both are shut down and the mobile device 4 is started again to continue to operate according to the pre-set program, and finally the actuator performs the corresponding operation.

[0031] The automatic replacement device for engraving needles based on printing plate roller pattern processing and the control method thereof of the present invention have the following advantages: After the mobile device drives an engraving needle to complete processing, when another engraving needle needs to be replaced for processing, the mobile device is first turned off by the intelligent control device, and then the reciprocating mechanism and motor A are driven to operate, so as to replace the engraving needle through the rotating replacement mechanism. After the replacement, both are turned off and the mobile device is started again to continue to operate according to the pre-set program, so as to achieve the purpose of automatically replacing the engraving needle without manual operation by the staff; The engraving needle of the present invention is detachably connected to the fixed turntable through a connecting assembly, so that the engraving needle can be conveniently replaced when processing different printing plate rollers or when the engraving needle is damaged; A cooling water circulation treatment device is installed in the support platform of the present invention, and a water tank connected to the circulation treatment device is installed on the top of the support platform, and a clamping mechanism is installed in the water tank. A cooling liquid pipe connected to the circulation treatment device is connected to the upper opening shell through a support frame, and the liquid outlet is opposite to the head of the engraving needle. Therefore, when the engraving needle processes the printing plate roller, the processing part is continuously cooled, and the used cooling water falls into the water tank, and then enters the circulation treatment device again for treatment, and then is used again.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. An automatic engraving needle replacement device based on printing plate roller pattern processing, the automatic engraving needle replacement device is installed on a printing plate roller pattern processing machine, the printing plate roller pattern processing machine comprises a base (1), and a clamping mechanism (3) connected to the top of the base (1) through a support platform (2), the top of the base (1) is located behind the support platform (2) and is equipped with a moving device (4) for driving the engraving needle (9) to move forward and backward and left and right, the moving device (4) drives the engraving needle (9) to move according to a pre-set program, thereby processing the printing plate roller pattern, the automatic engraving needle replacement device is installed on the transmission end of the moving device (4), and is characterized in that: The automatic replacement device comprises: A reciprocating mechanism (5) arranged on a transmission end of the moving device (4); A rotary replacement mechanism (6), comprising a motor A (601) fixed to a transmission end of the reciprocating mechanism (5), a rotating disk (602) fixedly connected to the transmission portion of the motor A (601), a plurality of connecting rods (603) distributed in a circular array at the top end of the rotating disk (602), and the heads of the connecting rods (603) are respectively fixed to different engraving needles (9); The intelligent control device (7) is arranged on the surface of the reciprocating mechanism (5). When the mobile device (4) drives an engraving needle (9) to complete processing and another engraving needle (9) needs to be replaced for processing, the mobile device (4) is first turned off by the intelligent control device (7), and then the reciprocating mechanism (5) and the motor A (601) are driven to operate, so that the engraving needle (9) is replaced by the rotating replacement mechanism (6). After the replacement, both are turned off and the mobile device (4) is started again to continue to operate according to a pre-set program.

2. The automatic replacement device for engraving needles based on printing plate roller pattern processing according to claim 1 is characterized in that: The reciprocating mechanism (5) comprises an upper open shell (501) fixed on the transmission end of the moving device (4); a reciprocating screw rod (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 wall of the reciprocating screw rod (502); a guide rail (505) is fixedly connected to the inner bottom wall of the upper open shell (501); and the bottom end of the rod sleeve (504) is slidably connected to the guide rail (505) via a slider (506).

3. The automatic replacement device for engraving needles based on printing plate roller pattern processing according to claim 1 is characterized in that: The engraving needle (9) is detachably connected to the fixed turntable (602) via a connecting assembly (8).

4. The automatic replacement device for engraving needles based on printing plate roller pattern processing according to claim 3 is characterized in that: The connection assembly (8) comprises a plurality of raised portions (801) welded to the top of a rotating disk (602) and distributed in a circumferential array. The end of the engraving needle (9) is fixedly connected to a through-slot seat (802) capable of being inserted into the raised portion (801). A telescopic rod (803) is embedded and fixed in the center of the rotating disk (602). The bottom end of the telescopic rod (803) is fixed to a transmission part of a motor A (601). The top of the telescopic rod (803) is fixedly connected to a fixing plate (804). When the through-slot seat (802) is inserted into the raised portion (801), the fixing plate (804) is pushed downward to be pressed against the through-slot seat (802) and the top of the raised portion (801), thereby fixing the through-slot seat (802) on the raised portion (801).

5. The automatic replacement device for engraving needles based on printing plate roller pattern processing according to claim 4 is characterized in that: The top of the rotating disk (602) is also fixedly connected to a plurality of screw rods (805) distributed in a circular array, the interior of the fixing plate (804) is provided with through holes (806) for the screw rods (805) to pass through, and the outer wall of the screw rod (805) is threadedly connected to a nut.

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

7. The automatic replacement device for engraving needles based on printing plate roller pattern processing according to claim 6 is characterized in that: A cabinet door (12) is mounted on the surface of the support platform (2), and a support frame (10) for connecting a coolant pipe is fixedly connected to the surface of the upper opening shell (501).

8. The automatic replacement device for engraving needles based on printing plate roller pattern processing according to claim 1 is characterized in that: The intelligent control device (7) comprises: A timer is used to detect the running time of the moving device (4) that drives the engraving needle (9) to move according to a preset program, and when the preset time for replacing the engraving needle (9) is reached, a signal is sent to the controller; The controller: according to the signal sent by the timer, sends a signal to the actuator to first shut down the moving device (4), then drive the reciprocating mechanism (5) and the motor A (601) to operate, thereby replacing the engraving needle (9) through the rotating replacement mechanism (6), and after the replacement, shut down both and start the moving device (4) again to continue to operate according to the pre-set program; Actuator: performs corresponding operations according to the signal from the controller; Power supply: used to supply power to the electrical components on the intelligent control device (7).

9. The control method of the automatic engraving needle replacement device according to any one of claims 1 to 5 and 8, characterized in that: The steps include: Step 1: multiple engraving needles (9) are mounted on the top of the turntable (602) in a circular array distribution manner through the connecting rods (603) thereon, and the engraving needle (9) to be processed first is placed opposite to the printing plate roller clamped by the clamping mechanism (3); Step 2: The mobile device (4) drives the first engraving needle (9) to move according to a preset program, thereby first processing the printing plate roller. At this time, the driving device on the clamping mechanism (3) drives the printing plate roller to rotate, thereby cooperating with the mobile device (4) to process different parts of the printing plate roller; Step 3: When the mobile device (4) drives the current engraving needle (9) to perform processing, the timer detects the running time of the mobile device (4); Step 4: When the timer detects that the running time of the mobile device (4) has reached the set time for replacing the engraving needle (9), it will send a signal to the controller, and the controller Step 5: According to the signal sent by the timer, the actuator is sent a signal to first shut down the moving device (4), then drive the reciprocating mechanism (5) and the motor A (601) to operate, thereby replacing the engraving needle (9) through the rotating replacement mechanism (6). After the replacement, both are shut down and the moving device (4) is started again to continue to operate according to the pre-set program, and finally the actuator performs the corresponding operation.

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