Automatic laser cutting and engraving device and cutting and engraving process for copper handicrafts

Abstract

The invention relates to the field of laser engraving, and discloses an automatic laser cutting and engraving device for copper handicrafts, which comprises a rack, a feeding and discharging component and an engraving component are arranged on the rack, the feeding and discharging component comprises a middle traction piece and two side supports respectively positioned on two sides of the middle traction piece, and side traction pieces are arranged on the side supports; a plurality of clamping units are arranged on the outer surface of the side traction part in the extending direction in an array mode, the opposite sides of the two side supports are each provided with a side plate, each side plate comprises a horizontal section parallel to the traction direction of the side traction part and an inclined section arranged at the end of the horizontal section, and the inclined sections are located on the upstream of the horizontal sections in the traction direction of the side traction part; the distance between the inclined sections of the two side plates is gradually decreased in the traction direction, the clamping unit comprises an outer column fixedly connected with the side traction piece, a telescopic rod is arranged in the outer column in a sliding mode, one end of the telescopic rod can make contact with the side plates, and the other end of the telescopic rod is provided with a clamping base through a clamping spring.

Description

Technical Field

[0001] The invention relates to the field of laser engraving, and in particular to an automatic laser cutting and engraving device for copper handicrafts and a cutting and engraving process. Background Art

[0002] Copper crafts are often used for decoration, collection or gift customization due to their unique metal texture and cultural connotation. Laser engraving can add fine patterns, text or textures to enhance the artistic value and personalization.

[0003] Laser engraving is a processing technology that uses a high-energy laser beam to accurately etch, cut or mark the surface of a material. It controls the path and parameters of the laser through a computer to achieve automated processing of complex patterns, text or graphics.

[0004] Based on the search for laser engraving, a Chinese utility model patent was found, and its authorization announcement number is CN216882330U. It discloses a fixing device for laser engraving, which adjusts the clamp through an electric push rod so as to adapt to plates of different sizes. This method of clamping objects to be laser engraved has some shortcomings when applied to the field of copper crafts. For example, copper crafts are thin and the engraved patterns are hollowed out or nearly hollowed out. Since copper has good thermal conductivity, laser engraving easily causes the temperature at the engraving position to rise. Therefore, when clamping copper crafts of different sizes, in order to avoid local deformation of the copper crafts and affect the quality of the engraved patterns, the clamping force needs to be kept constant to avoid the problem that the copper crafts are shaken easily due to too loose clamping, and the copper crafts are easily deformed at the engraved patterns due to too tight clamping. Although this patent document can achieve the purpose of clamping objects of different sizes, the clamping force will be different when clamping objects of different sizes. Therefore, there is a problem caused by the inconstant clamping force. Based on the search for the above problems, a Chinese utility model patent was found, and its authorization announcement number is CN220698569U, which discloses a fixed-point laser engraving device for mobile phone cases. According to its disclosed content, it can be known that: the adjustment component is to change the distance between the clamping plate 2 and the clamping plate 1 by rotating the adjustment bolt under the elastic force of the clamping spring; the clamping component is to move the clamping plate 2 away from the clamping plate 1, and then put the mobile phone case between the clamping plates 1 and 2, let go, and clamp the mobile phone case through the clamping plates 1 and 2 under the elastic force of the clamping spring; it can be known that this patent document can realize the clamping of mobile phone cases of different sizes, but in the clamping process, the clamping force depends on the compression amount of the clamping spring. When clamping mobile phone cases of different sizes, the compression amount of the clamping spring is different, so the clamping force is also different, and the constant clamping effect cannot be guaranteed.

[0005] Based on the above problems, the present invention proposes an automated laser cutting and engraving device for copper handicrafts and a cutting and engraving process. Summary of the Invention

[0006] To solve the problems mentioned in the above background, the present invention provides an automated laser cutting and engraving device for copper handicrafts and a cutting and engraving process.

[0007] To achieve the above technical objectives, the technical solutions adopted by the present invention are as follows.

[0008] An automated laser cutting and engraving device for copper handicrafts includes a frame. An unloading and loading member and an engraving member are arranged on the frame. The unloading and loading member includes an intermediate traction member and two side brackets respectively located on both sides of the intermediate traction member along its traction direction. A side traction member is arranged on each side bracket. The side traction member and the intermediate traction member move in the same direction and at the same speed, and their traction directions are both horizontally arranged; A clamping unit is arranged on the outer surface of the side traction member. A plurality of clamping units are arranged in an array along the extension direction of the side traction member. A side plate is respectively arranged on one side of the two side brackets facing away from each other. The side plate includes a horizontal section parallel to the traction direction of the side traction member and an inclined section arranged at the end of the horizontal section. The inclined section is located upstream of the horizontal section along the traction direction of the side traction member. The distance between the inclined sections of the two side plates decreases along the traction direction of the side traction member; The clamping unit includes an outer cylinder arranged horizontally and with its axis direction perpendicular to the traction direction of the side traction member. A telescopic rod is slidably arranged inside the outer cylinder. One end of the telescopic rod can contact the side plate, and a clamping seat is arranged at the other end through a clamping spring.

[0009] Furthermore, a fixed seat is arranged on the outer surface of the outer cylinder, and the fixed seat is fixedly connected to the outer surface of the side traction member.

[0010] Furthermore, an internal step is arranged at one end of the outer cylinder facing the intermediate traction member; The telescopic rod includes an inner sliding column. An external step and a threaded groove are arranged at one end of the inner sliding column, and a connecting sliding groove is arranged at the other end. The external step and the outer cylinder form a sliding connection along the axis direction of the outer cylinder. A return spring is sleeved outside the inner sliding column and is located between the external step and the internal step; A threaded shaft is threadedly arranged in the threaded groove. The end of the threaded shaft extends out of the outer cylinder and is provided with a ball head. During the movement of the clamping unit following the side traction member, the ball head can contact the side plate; A sliding rod is slidably arranged in the connecting sliding groove. A clamping spring is arranged between the bottom of the connecting sliding groove and the sliding rod. The end of the sliding rod extends out of the outer cylinder and is provided with a clamping seat.

[0011] Further, the clamping seat includes a bottom plate which is horizontally arranged and connected to the sliding rod. On the upper surface of the bottom plate, there are two convex plates arranged at an angle. The distance between the two convex plates decreases along the axial direction of the outer cylinder and from the middle traction member towards the side traction member. The angular bisector of the angle between the two convex plates is parallel to the axial direction of the outer cylinder; The upper surface of the bottom plate is flush with the upper surface of the middle traction member.

[0012] Further, there are two side traction members on the side bracket arranged along the axial direction of the outer cylinder. There are two fixed seats which are respectively arranged at both ends of the outer cylinder, and the two fixed seats are respectively fixedly connected to the outer surfaces of the two side traction members on the side bracket.

[0013] Further, the engraving member includes a z-axis movable frame and a z-axis linear module for driving the z-axis movable frame to move in the vertical direction; An x-axis movable frame is arranged on the z-axis movable frame and an x-axis linear module for driving the x-axis movable frame to move. The moving direction of the x-axis movable frame is parallel to the axial direction of the outer cylinder; A y-axis movable frame is arranged on the x-axis movable frame and a y-axis linear module for driving the y-axis movable frame to move. The moving direction of the y-axis movable frame is parallel to the traction direction of the middle traction member; An engraving execution element is arranged at the suspended end of the y-axis movable frame.

[0014] A cutting and engraving process of an automatic laser cutting and engraving device for copper handicrafts: Step 1: Use the existing robotic arm technology to tow and place the copper handicraft on the middle traction member; Step 2: The side traction member and the middle traction member run synchronously to tow the copper handicraft towards the engraving member. During this process, the ball head of the clamping unit will contact the inclined section of the side plate. Under the pushing of the inclined section, the ball head drives the threaded shaft and the inner sliding column to move, so that the clamping seat moves closer to the middle traction member. Through the cooperation of the two convex plates of the clamping seat, the position of the copper handicraft is aligned and clamped; Step 3: The ball head keeps contacting the horizontal section of the side plate, that is, keeps clamping the copper handicraft. After the copper handicraft is sent below the engraving end of the engraving member, the side traction member and the middle traction member pause running, and laser engraving is completed through the engraving member; Step 4: After engraving is completed, the side traction member and the middle traction member continue to run to tow the next copper handicraft below the engraving end of the engraving member. In this way, continuous laser engraving is realized; When the completed copper handicraft is towed and moved below the middle traction member and at the position where the inclined section of the side plate is located, the clamping unit will release the clamping, and the copper handicraft will fall downward.

[0015] Furthermore, when the size of the copper handicraft to be engraved changes, the adjustment process of the clamping unit is as follows: The clamping force of the clamping unit on the copper handicraft is equal to the compression amount of the clamping spring. Initially, the clamping force of the clamping unit on the copper handicraft is f1, the compression amount of the clamping spring is x1, and the length of the telescopic rod composed of the inner sliding column and the threaded shaft is y1; If the size of the copper handicraft to be engraved becomes larger and the increase in the size along the axis direction of the outer cylinder is l, then the length of the telescopic rod is adjusted to be smaller by l / 2; If the size of the copper handicraft to be engraved becomes smaller, then the length of the telescopic rod is adjusted to be larger by an amount equal to half of the decrease in the size of the copper handicraft along the axis direction of the outer cylinder.

[0016] Furthermore, if the length of the telescopic rod of one clamping unit among the two clamping units for clamping the copper handicraft is adjusted to y1 - h, and the length of the telescopic rod of the other clamping unit is adjusted to y1 + h, then when the clamping is completed, the compression amounts of the clamping springs of the two clamping units are still x1, but the position of the copper handicraft along the axis direction of the outer cylinder has shifted and the shift amount is h; Through the cooperation of the side traction member and the intermediate traction member, the position of the copper handicraft along the traction direction can be changed; By adjusting the length of the telescopic rod and the cooperation of the side traction member and the intermediate traction member, the position to be engraved of the copper handicraft can be made closer to the coordinate origin of the engraving member.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This solution can adapt to copper handicrafts of different sizes and clamp them. On this basis: 1. By adjusting the length of the telescopic rod composed of the threaded shaft and the inner sliding column in the clamping unit, when clamping copper handicrafts of different sizes, the clamping force applied to the copper handicraft can be ensured to be constant and consistent, thus solving the problem brought by the non-constant clamping force mentioned in the background art; 2. Some patterns on copper handicrafts are not located in the middle position but are biased towards one side. Therefore, on the basis of 1, this solution can adjust the length of the telescopic rod of the clamping unit to shift the position of the copper handicraft along the axis direction of the outer cylinder. Through the cooperation of the intermediate traction member and the side traction member, the position of the copper handicraft along the traction direction is shifted. The two cooperate to make the position where the pattern of the copper handicraft is located closer to the coordinate origin of the engraving member, thus improving the engraving efficiency of the engraving member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Schematic diagram of a copper handicraft Figure 2 Structural schematic diagram of the present invention Figure 3 Structural schematic diagram of the engraving member Figure 4 Structural schematic of the loading and unloading member Figure 1 ; Figure 5 Structural schematic of the loading and unloading member Figure 2 ; Figure 6 Schematic diagram of the clamping unit clamping a copper handicraft Figure 7 Structural schematic diagram of the clamping unit Figure 8 Cross-section of the clamping unit Figure 1 ; Figure 9 Cross-section of the clamping unit Figure 2 .

[0019] Reference numerals in the drawings are: 100, frame; 101, storage box; 200, loading and unloading member; 201, upper bracket; 202, vision detection element; 203, side bracket; 2031, runner; 204, side traction member; 205, intermediate traction member; 206, motor; 207, side plate; 208, clamping unit; 209, outer cylinder; 210, fixed seat; 211, inner sliding column; 212, threaded shaft; 2121, ball head; 213, return spring; 214, sliding rod; 215, clamping spring; 216, bottom plate; 217, convex plate; 300, engraving member; 301, z-axis linear module; 302, z-axis movable frame; 303, x-axis linear module; 304, x-axis movable frame; 305, y-axis linear module; 306, y-axis movable frame; 307, engraving execution element. Detailed implementation manners

[0020] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0021] In this solution, Figure 6 a refers to the copper handicraft.

[0022] Referring to Figures 2 - 9 , an automated laser cutting and engraving device for copper handicrafts includes a frame 100, and a loading and unloading member 200, an engraving member 300 and a storage box 101 are arranged on the frame 100.

[0023] I. Loading and unloading member 200: Reference Figure 4 and Figure 5 As shown in Figure 5 , the loading and unloading member 200 includes an intermediate traction member 205 and two side brackets 203 respectively located on both sides of the intermediate traction member 205 along its traction direction. A side traction member 204 is provided on each side bracket 203. The side traction member 204 and the intermediate traction member 205 can adopt existing conveyor belt technology, or existing synchronous belt technology, or existing chain technology, etc., which will not be elaborated here. In addition, the side traction member 204 and the intermediate traction member 205 have the same size and model, and their driving pulleys or driving sprockets are coaxially connected and share a motor 206. Therefore, when the side traction member 204 tractions an object (referring to a copper handicraft) and when the intermediate traction member 205 tractions an object, they maintain the same direction and the same speed. In addition, the traction direction is horizontally arranged.

[0024] A clamping unit 208 is provided on the outer surface of the side traction member 204. A plurality of clamping units 208 are arranged in an array along the extension direction of the side traction member 204. With the cooperation of the corresponding two clamping units 208 respectively located on the two side brackets 203, clamping or releasing of the copper handicraft can be achieved.

[0025] A side plate 207 is provided on each of the opposite sides of the two side brackets 203. The side plate 207 includes a horizontal section parallel to the traction direction of the side traction member 204 and an inclined section provided at the end of the horizontal section. The inclined section is located upstream of the horizontal section along the traction direction of the side traction member 204. The distance between the inclined sections of the two side plates 207 decreases along the traction direction of the side traction member 204.

[0026] Reference Figures 6 - 9 As shown in Figures 6 - 9 , the clamping unit 208 includes an outer cylinder 209 arranged horizontally and with its axis direction perpendicular to the traction direction of the side traction member 204. A fixing seat 210 is provided on the outside of the outer cylinder 209. The fixing seat 210 is fixedly connected to the outer surface of the side traction member 204. Further, two side traction members 204 on the side bracket 203 are arranged along the axis direction of the outer cylinder 209. Two fixing seats 210 are provided and are respectively arranged at both ends of the outer cylinder 209. The two fixing seats 210 are respectively fixedly connected to the outer surfaces of the two side traction members 204 on the side bracket 203. The significance is to improve the connection stability between the outer cylinder 209 and the side traction member 204.

[0027] An internal step is provided at one end of the outer cylinder 209 facing the intermediate traction member 205. An inner sliding column 211 is sleeved inside the outer cylinder 209. One end of the inner sliding column 211 is provided with an external step and a threaded groove, and the other end is provided with a connection sliding groove. A return spring 213 located between the external step and the internal step is sleeved outside the inner sliding column 211. A sliding connection along the axis direction of the outer cylinder 209 is formed between the external step and the outer cylinder 209.

[0028] The inner thread of the threaded groove is provided with a threaded shaft 212. The end of the threaded shaft 212 extends out of the outer cylinder 209 and is provided with a ball head 2121. During the process of the clamping unit 208 moving following the side traction member 204, the ball head 2121 can come into contact with the side plate 207. Further, by rotating the ball head 2121, the position of the threaded shaft 212 in the threaded groove can be changed, that is, the initial length of the telescopic rod formed by the threaded shaft 212 and the inner sliding column 211 can be changed.

[0029] A sliding rod 214 is sleeved in the connecting chute. Further, one end of the sliding rod 214 is provided with a sliding step. A sliding connection along the axis direction of the outer cylinder 209 is formed between the sliding step and the connecting chute. The other end of the sliding rod 214 extends out of the outer cylinder 209 and is provided with a clamping seat. A clamping spring 215 located between the bottom of the chute and the sliding rod 214 is arranged in the connecting chute.

[0030] The clamping seat includes a bottom plate 216 arranged horizontally and connected to the sliding rod 214. Two convex plates 217 arranged at an angle are provided on the upper surface of the bottom plate 216. The distance between the two convex plates 217 decreases along the axis direction of the outer cylinder 209 and in the direction from the middle traction member 205 to the side traction member 204. The angular bisector of the angle between the two convex plates 217 is parallel to the axis direction of the outer cylinder 209.

[0031] The upper surface of the bottom plate 216 is flush with the upper surface of the middle traction member 205.

[0032] The working process of the loading and unloading member 200: Through existing technologies such as robotic arms, the copper handicraft is towed and placed on the middle traction member 205. When placing, it is necessary to ensure that the center of gravity of the copper handicraft is roughly located on the center line of the upper surface of the middle traction member 205. This can be achieved through technologies such as robotic arms and will not be elaborated here. Then, the side traction member 204 and the middle traction member 205 run synchronously, towing the copper handicraft towards the engraving member 300. During this process, the ball head 2121 of the clamping unit 208 will come into contact with the inclined section of the side plate 207. Under the pushing of the inclined section, the ball head 2121 drives the threaded shaft 212 and the inner sliding column 211 to move, so that the clamping seat moves closer to the middle traction member 205. Through the cooperation of the two convex plates 217 of the clamping seat, the position alignment and clamping of the copper handicraft are realized. Position correction means that when placing, the copper handicraft may be slightly offset, and the position can be aligned through the two convex plates 217. Then, the ball head 2121 keeps in contact with the horizontal section of the side plate 207, that is, keeps clamping the copper handicraft. After the copper handicraft is sent below the engraving end of the engraving member 300, the side traction member 204 and the middle traction member 205 pause running, and the laser engraving is completed through the engraving member 300. After engraving is completed, the side traction member 204 and the intermediate traction member 205 continue to operate, pulling the next copper handicraft to be located below the engraving end. In this way, continuous laser engraving is achieved by repeating this process. When the engraved copper handicraft is clamped and moved below the intermediate traction member 205 and is located at the position of the inclined section of the side plate 207, the clamping unit 208 will release the clamping, and the copper handicraft will then fall into the storage box 101.

[0033] The advantages of the loading and unloading component 200 are as follows: It can adapt to copper handicrafts of different sizes and clamp them. On this basis: 1. It can ensure that the clamping force on the copper handicraft is constant, thus solving the problem caused by the non-constant clamping force mentioned in the background technology. Specifically: The clamping force of the clamping unit on the copper handicraft is equal to the compression amount of the clamping spring. Initially, the clamping force of the clamping unit on the copper handicraft is f1, the compression amount of the clamping spring is x1, and the length of the telescopic rod composed of the threaded shaft and the inner sliding column is y1. If the size of the copper handicraft to be engraved becomes larger and the increase in size along the axis of the outer cylinder is l, then: If the length of the telescopic rod is not adjusted, then when the clamping is completed, the clamping force becomes larger to f2, and the compression amount of the clamping spring corresponding to f2 is x2, and x2 - x1 = l / 2. Therefore, in order to ensure that the clamping force is constant, that is, when the clamping is completed, the clamping force is still f1, it is necessary to adjust the length of the telescopic rod in advance. The adjustment range is: the length of the telescopic rod is adjusted smaller by l / 2. Similarly, if the size of the copper handicraft to be engraved becomes smaller, then the length of the telescopic rod needs to be adjusted larger by an amount equal to half of the decrease in the size of the copper handicraft along the axis of the outer cylinder. It can be seen from this that: in this solution, when adaptively clamping copper handicrafts of different sizes, the clamping force can be ensured to be consistent. Therefore, the problem caused by the non-constant clamping force mentioned in the background technology is solved. 2. Taking Figure 6 the perspective as an example for elaboration: When clamping copper handicrafts of the same size, if the length of the telescopic rod of the clamping unit on the left side is adjusted to y1 - h and the length of the telescopic rod of the clamping unit on the right side is adjusted to y1 + h, then when the clamping is completed, the compression amounts of the clamping springs of the clamping units on the left and right sides are still x1, the clamping force remains constant, but the position of the copper handicraft along the axis of the outer cylinder shifts to the left by h. Similarly, the length of the telescopic rod of the clamping unit on the left side is adjusted to x1 + h, and the length of the telescopic rod of the clamping unit on the right side is adjusted to x1 - h. Then, the position of the copper handicraft along the axis of the outer cylinder shifts to the right by h. The advantage is that: the patterns on some copper handicrafts are not located in the middle position but are biased to one side. At this time, the position of the copper handicraft along the axis of the outer cylinder can be shifted by adjusting the clamping unit. Through the cooperation of the middle traction member and the side traction member, the position of the copper handicraft along the traction direction can be shifted. The two cooperate to make the position where the pattern of the copper handicraft is located closer to the coordinate origin of the engraving member, which can improve the engraving efficiency of the engraving member.

[0034] It should be noted that by screwing the threaded shaft, the length of the telescopic rod composed of the threaded shaft and the inner sliding column can be adjusted.

[0035] In a preferred embodiment, refer to Figure 5 , two side traction members 204 are provided on the same side bracket 203. There are two rows of runner groups arranged between the two side traction members 204. Each row of runner groups includes a plurality of runners 2031 arranged in an array along the traction direction. The runners 2031 are vertically arranged. The opposite sides of the two side traction members 204 are respectively in contact with the two rows of runner groups. The advantage is that when the clamping unit 208 performs a clamping action, the offset of the side traction member 204 is restricted.

[0036] In a preferred embodiment, an upper bracket 201 is provided on the frame 100 above the loading and unloading member 200. A vision detection element 202 is provided on the upper bracket 201. An avoidance opening is provided on the upper bracket 201 for avoiding laser engraving and for the copper handicraft to be placed on the middle traction member 205. The advantage is that after clamping, the vision detection element 202 can be used to perform vision detection on the clamped copper handicraft to determine whether the placement of the copper handicraft is incorrect.

[0037] II. Engraving member 300: Refer to Figure 2 And Figure 3 , the engraving member 300 includes a z-axis movable frame 302 and a z-axis linear module 301 for driving the z-axis movable frame 302 to move in the vertical direction.

[0038] An x-axis movable frame 304 is provided on the z-axis movable frame 302 and an x-axis linear module 303 for driving the x-axis movable frame 304 to move. The moving direction of the x-axis movable frame 304 is parallel to the axis direction of the outer cylinder 209.

[0039] The x-axis movable frame 304 is provided with a y-axis movable frame 306 and a y-axis linear module 305 for driving the y-axis movable frame 306 to move. The moving direction of the y-axis movable frame 306 is parallel to the traction direction of the middle traction member 205.

[0040] The suspended end of the y-axis movable frame 306 is provided with a carving execution element 307. The carving execution element 307 can be realized by using the existing laser engraving head technology and will not be elaborated.

[0041] The z-axis linear module 301, the x-axis linear module 303 and the y-axis linear module 305 can adopt the existing electric telescopic rod technology or the existing screw linear motion technology, etc., and will not be elaborated.

[0042] Through the cooperation of the z-axis linear module 301, the x-axis linear module 303 and the y-axis linear module 305, the carving execution element 307 can be driven to move within the three-dimensional coordinate system, so as to realize the laser engraving of copper handicrafts.

[0043] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content without departing from the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automated laser cutting and engraving device for copper handicrafts, comprising a frame (100), wherein a loading and unloading component (200) and an engraving component (300) are arranged on the frame (100), and it is characterized in that, The loading and unloading component (200) includes an intermediate traction member (205) and two side brackets (203) respectively located on both sides of the intermediate traction member (205) along its traction direction. A side traction member (204) is provided on each side bracket (203). The side traction member (204) has the same direction and speed as the intermediate traction member (205), and the traction directions of both are horizontally arranged; A clamping unit (208) is provided on the outer surface of the side traction member (204). A plurality of clamping units (208) are arranged in an array along the extension direction of the side traction member (204). On the opposite sides of the two side brackets (203), there is a side plate (207) respectively. The side plate (207) includes a horizontal section parallel to the traction direction of the side traction member (204) and an inclined section provided at the end of the horizontal section. The inclined section is located upstream of the horizontal section along the traction direction of the side traction member (204). The distance between the inclined sections of the two side plates (207) decreases along the traction direction of the side traction member (204); The clamping unit (208) includes an outer cylinder (209) arranged horizontally with its axis direction perpendicular to the traction direction of the side traction member (204). A telescopic rod is slidably arranged in the outer cylinder (209). One end of the telescopic rod can contact the side plate (207), and the other end is provided with a clamping seat through a clamping spring (215).

2. The automated laser cutting and engraving device for copper handicrafts according to claim 1, wherein, A fixed seat (210) is provided on the outer surface of the outer cylinder (209), and the fixed seat (210) is fixedly connected to the outer surface of the side traction member (204).

3. An automated laser cutting and engraving device for copper handicrafts according to claim 1 or 2, characterized in that, One end of the outer cylinder (209) facing the intermediate traction member (205) is provided with an internal step; The telescopic rod includes an inner sliding column (211). One end of the inner sliding column (211) is provided with an external step and a threaded groove, and the other end is provided with a connecting sliding groove. A sliding connection along the axis direction of the outer cylinder (209) is formed between the external step and the outer cylinder (209). A return spring (213) located between the external step and the internal step is sleeved outside the inner sliding column (211); A threaded shaft (212) is threadedly arranged in the threaded groove. The end of the threaded shaft (212) extends out of the outer cylinder (209) and is provided with a ball head (2121). During the movement of the clamping unit (208) following the side traction member (204), the ball head (2121) can contact the side plate (207); A sliding rod (214) is slidably arranged in the connecting sliding groove. A clamping spring (215) is provided between the bottom of the connecting sliding groove and the sliding rod (214). The end of the sliding rod (214) extends out of the outer cylinder (209) and is provided with a clamping seat.

4. An automated laser cutting and engraving device for copper handicrafts according to claim 3, characterized in that, The clamping seat includes a bottom plate (216) arranged horizontally and connected to the sliding rod (214). On the upper surface of the bottom plate (216), there are two convex plates (217) arranged at an angle. The distance between the two convex plates (217) decreases along the axis direction of the outer cylinder (209) and from the direction of the intermediate traction member (205) towards the side traction member (204). The angular bisector of the angle between the two convex plates (217) is parallel to the axis direction of the outer cylinder (209); The upper surface of the bottom plate (216) is flush with the upper surface of the intermediate traction member (205).

5. An automated laser cutting and engraving device for copper handicrafts according to claim 2, characterized in that, There are two side traction members (204) on the side bracket (203) arranged along the axial line direction of the outer cylinder (209), and there are two fixed seats (210) which are respectively arranged at both ends of the outer cylinder (209), and the two fixed seats (210) are respectively fixedly connected to the outer surfaces of the two side traction members (204) on the side bracket (203).

6. An automated laser cutting and engraving device for copper handicrafts according to claim 4, characterized in that, The engraving member (300) includes a z-axis movable frame (302) and a z-axis linear module (301) for driving the z-axis movable frame (302) to move in the vertical direction; An x-axis movable frame (304) and an x-axis linear module (303) for driving the x-axis movable frame (304) to move are arranged on the z-axis movable frame (302), and the moving direction of the x-axis movable frame (304) is parallel to the axial line direction of the outer cylinder (209); A y-axis movable frame (306) and a y-axis linear module (305) for driving the y-axis movable frame (306) to move are arranged on the x-axis movable frame (304), and the moving direction of the y-axis movable frame (306) is parallel to the traction direction of the intermediate traction member (205); An engraving execution element (307) is arranged at the suspension end of the y-axis movable frame (306).

7. The cutting and engraving process of an automated laser cutting and engraving device for copper handicrafts according to claim 4, characterized in that It includes the following steps: Step 1: Traction and place the copper handicraft on the intermediate traction member (205) through the existing robotic arm technology; Step 2: The side traction member (204) and the intermediate traction member (205) run synchronously to traction the copper handicraft to move towards the engraving member (300). During this process, the ball head (2121) of the clamping unit (208) will contact the inclined section of the side plate (207). Under the pushing of the inclined section, the ball head (2121) drives the threaded shaft (212) and the inner sliding column (211) to move, so that the clamping seat moves closer to the intermediate traction member (205). Through the cooperation of the two convex plates (217) of the clamping seat, the position of the copper handicraft is straightened and clamped; Step 3: The ball head (2121) keeps contacting the horizontal section of the side plate (207), that is, keeps clamping the copper handicraft. After the copper handicraft is sent below the engraving end of the engraving member (300), the side traction member (204) and the intermediate traction member (205) pause running, and laser engraving is completed through the engraving member (300); Step 4: After engraving is completed, the side traction member (204) and the intermediate traction member (205) continue to run to traction the next copper handicraft to be located below the engraving end of the engraving member (300). In this way, continuous laser engraving is realized; When the engraved copper handicraft is clamped and moved to below the intermediate traction member (205) and at the position where the inclined section of the side plate (207) is located, the clamping unit (208) will release the clamping, and the copper handicraft will fall downward.

8. The cutting and engraving process of an automated laser cutting and engraving device for copper handicrafts as claimed in claim 4 or 7, characterized in that, When the size of the copper handicraft to be engraved changes, the adjustment process of the clamping unit (208) is as follows: The clamping force of the clamping unit (208) on the copper handicraft is equal to the compression amount of the clamping spring (215). Initially, the clamping force of the clamping unit (208) on the copper handicraft is f1, the compression amount of the clamping spring (215) is x1, and the length of the telescopic rod composed of the inner sliding column (211) and the threaded shaft (212) is y1; If the size of the copper handicraft to be engraved becomes larger and the increased amount of the size in the axial direction of the outer cylinder (209) is l, then the length of the telescopic rod is adjusted to be smaller and the reduced amount is l / 2; If the size of the copper handicraft to be engraved becomes smaller, then the length of the telescopic rod is adjusted to be larger and the increased amount is equal to half of the reduced amount of the size of the copper handicraft in the axial direction of the outer cylinder (209).

9. The cutting and engraving process of an automated laser cutting and engraving device for copper handicrafts as described in claim 8, characterized in that, Among the two clamping units (208) clamping the copper handicraft, if the length of the telescopic rod of one clamping unit (208) is adjusted to y1 - h and the length of the telescopic rod of the other clamping unit is adjusted to y1 + h, then when the clamping is completed, the compression amounts of the clamping springs (215) of the two clamping units (208) are still x1, but the position of the copper handicraft in the axial direction of the outer cylinder (209) is offset and the offset amount is h; Through the cooperation of the side traction member (204) and the intermediate traction member (205), the position of the copper handicraft in the traction direction can be changed; Through the adjustment of the length of the telescopic rod and the cooperation of the side traction member (204) and the intermediate traction member (205), the position to be engraved of the copper handicraft can be made closer to the coordinate origin of the engraving member (300).

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