Accurate positioning device of laser marking press

Abstract

The invention discloses an accurate positioning device of a laser marking press, and relates to the technical field of laser marking, the accurate positioning device comprises a support frame, side groove arc plates are fixedly connected to the two sides of the top surface of the support frame, two platform plates are fixedly connected to the top surface of the support frame, a groove plate is fixedly connected between the two platform plates, and the groove plate is fixedly connected to the top surface of the support frame. A transverse moving frame is slidably connected between the two side groove arc plates, a laser engraving mechanism is arranged on the outer side of the transverse moving frame, a pressing plate clamping mechanism is arranged above the platform plate, and an auxiliary feeding mechanism is arranged behind the supporting frame. According to the laser engraving machine, the edge pressing strip connected with the edge pressing transverse rod makes contact with the edge of a plate, it is avoided that structural positioning is matched with a pressing plate frame to apply pressure downwards, and the plate fixing effect is improved; and the positioning structure is prevented from shielding the plate to influence the engraving area and the engraving effect.

Description

Technical Field

[0001] The present invention relates to the technical field of laser engraving, and in particular to a precise positioning device for a laser engraving machine. Background Art

[0002] The accuracy of laser marking is closely related to the placement of the material. To ensure the best marking effect, the operator needs to pay attention to the positioning of the material, the horizontal state of the machine, environmental factors, the distance of the laser head, and software calibration. Through reasonable placement and adjustment, the quality and accuracy of laser marking can be significantly improved.

[0003] The patent with announcement number CN221312938U discloses a precise positioning device for a laser engraving machine, including: a mounting plate and a conveyor belt, and a clamping mechanism arranged on the top of the mounting plate; the clamping mechanism includes: a plurality of sliding rods, a fixed frame arranged at the bottom of the plurality of sliding rods, a connecting plate arranged at the top of the plurality of sliding rods, and a sleeve arranged at the top of the connecting plate: two through-slide grooves are provided on the inner walls on both sides of the fixed frame, and sliding plates are slidably connected in the two opposite slide grooves, a clamping plate is fixedly connected at the bottom of the sliding plate, and adjustment blocks are fixedly connected on both sides of the sliding plate; a plurality of sliding rods pass through the mounting plate and are slidably connected, and a precise positioning device for a laser engraving machine is provided in the patent, wherein a motor is arranged in the mounting groove, a threaded rod is arranged at one end of the motor output shaft, and the threaded rod passes through the connecting plate and is threadedly connected to the sleeve, and by starting the motor, the motor drives the threaded rod to rotate, thereby driving the sleeve to move up and down, but the patent still has the problem that the engraving object is easily offset from the placement position to affect the engraving effect, so it is very necessary to design a precise positioning device for a laser engraving machine. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a precise positioning device for a laser engraving machine, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a precise positioning device for a laser engraving machine, comprising a support frame, both sides of the top surface of the support frame are fixedly connected with side groove arc plates, the top surface of the support frame is fixedly connected with two platform plates, a groove plate is fixedly connected between the two platform plates, a transverse frame is slidably connected between the two side groove arc plates, a laser engraving mechanism is arranged on the outer side of the transverse frame, a pressure plate clamping mechanism is arranged above the platform plate, and an auxiliary feeding mechanism is arranged at the rear of the support frame; The laser engraving mechanism comprises a threaded rod, the outer side surface of the threaded rod is threadedly connected to a moving rod seat, the top of the moving rod seat is equipped with a cylinder, the bottom end of the cylinder is fixedly connected to the engraving end, the top edge of the engraving end is fixedly connected to a linkage rod, both ends of the linkage rod are fixedly connected to a pressure rod strip, the side of the pressure rod strip is fixedly connected to a circle rod, the bottom surface of each platform plate is hingedly connected to two inclined slot rods, the side of the inclined slot rod is fixedly connected to a deflection turning rod, the side of each inclined slot rod is slidably connected to a telescopic sliding rod, the end of the telescopic sliding rod is fixedly connected to a pressure pushing plate, the telescopic sliding rod is a telescopic structure, the telescopic sliding rod slides through the outer side of the groove plate to the inside, the threaded rod is rotatably connected to the end of the transverse moving frame, the circle rod slides through the top surface of the platform plate to the bottom surface, the deflection turning rod is slidably connected to the bottom end of the circle rod, and when the threaded rod is driven to rotate by an external motor, the threaded rod rotates to drive the connected The moving rod seat moves horizontally along the transverse moving frame. When the cylinder on the connecting moving rod seat extends downward to engrave and approaches the object to be engraved, the cylinder pushes the engraving end to move downward and drives the linkage rod to move together. The linkage rod pushes the connected pressure rod strip to drive the circle rod to slide downward along the connection of the platform plate, so that the circle rod pushes the deflected turning rod to deflect around the connection at the bottom surface of the platform plate, thereby driving the inclined slot rod to press the inclined slot rod through the inner wall of the groove plate through the deflected turning rod, so that the inclined slot rod pushes the telescopic sliding rod to slide through the inner wall of the groove plate, and the telescopic sliding rods approach each other through the connected pressure push plates to clamp the objects in the groove plate. As the cylinder continues to move, the circle rod moves downward in sequence, so that the telescopic sliding rod pushes the pressure push plate to press the objects. After that, the telescopic sliding rod begins to shrink due to the reaction force of the objects being squeezed, so that the pressure push plate contacts the placement position of the positioning objects, and adjusts the placement position of the box-shaped objects placed in the groove plate, which plays a role in correcting the placement position and improving the engraving position and effect.

[0006] The cam frame has two ends, and the two ends of the spring sheet are respectively fixedly connected to the top surface of the press plate frame, and the ends of the two press plate hinges are respectively fixedly connected to the press plate frame and the press plate frame, and the two ends of the spring sheet are respectively fixedly connected to the press plate frame and the press plate frame, and the four vertical short rods are fixedly connected to the top surface of the press plate frame in groups of two, and the ends of the two press plate hinge rods away from the press plate frame are respectively hingedly connected to the slide frame and the press plate frame, when plate items are processed, the plate is placed on the top of the platform plate, and the cylinder is extended. The engraving end is pushed to move downward, and the pressure rod slides downward along the vertical pressure plate and squeezes the spring sheet, so that the spring sheet is pressed and pushes the vertical pressure plate to slide along the vertical short rod close to the top surface of the platform plate, pressing the edge of the plate to prevent the plate from deforming and bulging and affecting the engraving effect. At the same time, when the size of the plate to be engraved is small, the position of the slide frame is manually adjusted to allow the slide frame to slide along the inner slide of the pressure plate frame. After the slide frame moves, it pushes the pressure plate hinge rod on the connected side. When the slide frame approaches the pressure plate frame on the farther side, the pressure plate hinge rods on both sides are deflected at the same time to push the connected pressure edge cross bar to the edge of the plate, and the pressure edge strip connected by the pressure edge cross bar contacts the edge of the plate, avoiding the use of structural positioning to cooperate with the pressure plate frame to apply downward pressure, thereby improving the plate fixing effect and preventing the positioning structure from blocking the plate and affecting the engraving area and engraving effect.

[0007] According to the above technical scheme, the auxiliary feeding mechanism includes a long sliding bar, the outer side surface of the long sliding bar is slidably connected to a supporting cross frame, the rear side surface of the supporting cross frame is fixedly connected to a sliding bar hanger, the bottom end of the sliding bar hanger is fixedly connected to an auxiliary material table, the middle part of the auxiliary material table is fixedly connected to two guide slide bars, a feeding plate is slidably connected to the top of the guide slide bar, an upper tooth block is fixedly connected to the bottom surface of the feeding plate, a gear is meshedly connected to the bottom of the upper tooth block, both sides of the gear are rotatably connected to a tooth seat plate, the bottom end of the tooth seat plate is fixedly connected to a tooth seat slide groove, the inner side of the tooth seat slide groove slides The gear unit is connected to a lower gear block, the rear side surface of the support frame is fixedly connected to a side support rod, the top surface of the feed plate is fixedly connected to a blocking rod, the long sliding rod is fixedly connected to the side groove arc plate, the lower gear block is meshingly connected to the gear, the front end of the lower gear block is fixedly connected to a touch pressure plate, the rear side surface of the lower gear block is fixedly connected to an elastic spring, and the two ends of the elastic spring are respectively fixedly connected to the lower gear block and the end of the gear seat slide groove, a through groove is provided on the top surface of the middle part of the auxiliary material table, and the through groove is slidably connected to the upper gear block, and transfer structures are provided on both sides of the groove plate, and the transfer structure includes a guide wheel, and the guide wheel is rotatably connected to The inner walls of the top ends of both sides of the support frame are meshed with chains on the outer sides of the guide wheels, and chain rods are fixedly connected to the sides of the chains, and the chains are symmetrically distributed about the vertical center line of the support frame. When the cut plates or box-shaped items are transported to the auxiliary material table through transmission, the auxiliary material table is pushed to move through the connected sliding rod hanger, so that the sliding rod hanger drives the supporting cross frame to move along the long sliding rod. At this time, the auxiliary material table is close to the support frame, so that the touch plate on the bottom of the auxiliary material table contacts the side support rod. After the touch plate is pressed, it pushes the lower tooth block to slide along the tooth seat slide groove and squeeze the spring. At the same time, the movement of the lower tooth block drives the meshing gear to rotate, so that the gear rotation brings the connected The upper tooth block is close to the support frame, so that the feed plate connected to the upper tooth block extends into the groove plate, so that the objects on the feed plate are fed into the groove plate. Then, after the feed plate is reset according to the above process, the guide wheel rotates to drive the chain rod connected to the chain to move, so that the chain rod pushes the objects in the groove plate to the designated position. When the plate is above the auxiliary material table, the feed plate drives the connected blocking rod to push the plate along the flush platform plate to the top of the chain, and uses the chain to drive the plate to move to the designated position for engraving. The auxiliary material table moves to assist in carrying heavier objects and move the objects to the designated position, thereby improving the efficiency of engraving processing.

[0008] The present invention provides a precise positioning device for a laser engraving machine, which has the following beneficial effects: The present invention is provided with a threaded rod, a rod shifting seat, a cylinder, an engraving end, a linkage rod, a pressure rod strip, a circle rod, a deflection bend rod, an inclined groove rod, a telescopic slide rod, and a pressure push plate. The circle rod moves downward in sequence, so that the telescopic slide rod pushes the pressure push plate to press the object, and the telescopic slide rod begins to shrink due to the reaction force of the object squeezing, so that the pressure push plate contacts the placement position of the positioning object, and the placement position of the box-shaped object placed in the groove plate is adjusted, so as to correct the placement position and improve the engraving position and effect. The present invention is provided with a vertical pressing plate, a spring sheet, a pressing plate frame, a vertical short rod, a pressing plate hinge rod, a pressing edge cross rod, a pressing edge strip, and a slide frame. The pressing plate hinge rods on both sides are deflected at the same time to push the connected pressing edge cross rods to approach the edge of the plate. The pressing edge strips connected to the pressing edge cross rods contact the edge of the plate, avoiding the use of structural positioning to cooperate with the pressing plate frame to apply downward pressure, thereby improving the fixing effect of the plate and preventing the positioning structure from blocking the plate to affect the imprintable area and imprinting effect. The present invention is provided with a long sliding bar, a supporting cross frame, a sliding bar hanger, an auxiliary material table, a feeding plate, an upper tooth block, a gear, a lower tooth block, a touch pressure plate, a tooth seat plate, a tooth seat slide groove, a side support rod, a guide slide bar, and a blocking rod, so that the chain rod pushes the objects in the groove plate to move to the specified position; when the plate is located above the auxiliary material table, the feeding plate drives the connected blocking rod to push the plate along the flush platform plate to the top of the chain, and uses the chain to drive the plate to move to the specified position for engraving; the auxiliary material table is moved to assist in carrying heavier objects, and the objects are moved to the specified position, thereby improving the efficiency of the engraving process. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall rear-view stereoscopic structure of the present invention; Figure 3 It is a schematic diagram of the structure of the overall laser engraving mechanism of the present invention; Figure 4 This is a schematic diagram of the integrally inclined slot rod connection structure of the present invention; Figure 5 It is a structural schematic diagram of the integral pressing plate clamping mechanism of the present invention; Figure 6 It is a structural schematic diagram of the overall auxiliary feeding mechanism of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of A.

[0010] In the figure: 1, support frame; 2, side groove arc plate; 3, platform plate; 4, horizontal moving frame; 5, laser engraving mechanism; 51, threaded rod; 52, rod shifting seat; 53, cylinder; 54, engraving end; 55, linkage rod; 56, pressure rod strip; 57, ring rod; 58, deflection turning rod; 59, inclined groove rod; 510, telescopic sliding rod; 511, pressure push plate; 6, pressure plate clamping mechanism; 61, vertical pressure plate; 62, spring sheet; 63, pressure plate frame; 64, vertical short rod; 65, pressure plate hinge rod; 66 , edge pressing cross bar; 67, edge pressing strip; 68, slide frame; 7, auxiliary feeding mechanism; 71, long slide bar; 72, supporting cross frame; 73, slide bar hanger; 74, auxiliary material table; 75, feeding plate; 76, upper tooth block; 77, gear; 78, lower tooth block; 79, touch plate; 710, gear seat plate; 711, gear seat slide; 712, side support rod; 713, guide slide bar; 714, blocking rod; 8, groove plate; 9, transfer structure; 91, guide wheel; 92, chain; 93, chain rod. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0012] See also Figure 1-7 , the embodiment of the present invention is: a precise positioning device for a laser engraving machine, comprising a support frame 1, side groove arc plates 2 are fixedly connected to both sides of the top surface of the support frame 1, two platform plates 3 are fixedly connected to the top surface of the support frame 1, a groove plate 8 is fixedly connected between the two platform plates 3, a transverse frame 4 is slidably connected between the two side groove arc plates 2, a laser engraving mechanism 5 is arranged on the outer side of the transverse frame 4, a pressure plate clamping mechanism 6 is arranged above the platform plate 3, and an auxiliary feeding mechanism 7 is arranged at the rear of the support frame 1; The laser engraving mechanism 5 includes a threaded rod 51, the outer side surface of the threaded rod 51 is threadedly connected to a rod shifting seat 52, a cylinder 53 is installed on the top of the rod shifting seat 52, the bottom end of the cylinder 53 is fixedly connected to an engraving end 54, the top edge of the engraving end 54 is fixedly connected to a linkage rod 55, both ends of the linkage rod 55 are fixedly connected to a pressure rod strip 56, the side of the pressure rod strip 56 is fixedly connected to a ring rod 57, the bottom surface of each platform plate 3 is hingedly connected to two inclined groove rods 59, the side of the inclined groove rod 59 is fixedly connected to a deflection turning rod 58, the side of each inclined groove rod 59 is slidably connected to a telescopic slide rod 510, and the end of the telescopic slide rod 510 is fixedly connected to a pressure push plate 511 The telescopic slide rod 510 is a telescopic structure. The telescopic slide rod 510 slides through the outer side of the groove plate 8 to the inside. The threaded rod 51 is rotatably connected to the end of the transverse frame 4. The circle rod 57 slides through the top surface of the platform plate 3 to the bottom surface. The deflection bend rod 58 is slidably connected to the bottom end of the circle rod 57. The circle rod 57 moves downward in sequence, so that the telescopic slide rod 510 pushes the pressure push plate 511 to press the object. After that, the telescopic slide rod 510 begins to shrink due to the reaction force of the object squeezing, so that the pressure push plate 511 contacts the placement position of the positioning object, and adjusts the placement position of the box-shaped object placed in the groove plate 8, which plays a role in correcting the placement position and improving the engraving position and effect.

[0013] The pressure plate clamping mechanism 6 includes a vertical pressure plate 61, the bottom surface of the vertical pressure plate 61 is fixedly connected to a pressure plate frame 63, a spring sheet 62 is arranged on the side of the vertical pressure plate 61, and the four corners of the pressure plate frame 63 are slidably connected to vertical short rods 64, the inner side of the pressure plate frame 63 is slidably connected to a slide frame 68, and two pressure edge cross bars 66 are arranged on the inner side of the slide frame 68, and both ends of each pressure edge cross bar 66 are hingedly connected to a pressure plate hinge rod 65, and the side of the pressure edge cross bar 66 away from the pressure plate frame 63 is fixedly connected to a pressure edge strip 67, and the two ends of the spring sheet 62 are respectively connected to the pressure rod strip 56 and the pressure The plate frame 63 is fixedly connected, and four vertical short rods 64 are fixedly connected to the top surface of the pressure plate frame 63 in groups of two. The two pressure plate hinge rods 65 are hingedly connected to the slide frame 68 and the pressure plate frame 63 at one end away from the pressure edge cross bar 66. The pressure plate hinge rods 65 on both sides are deflected at the same time to push the connected pressure edge cross bar 66 to the edge of the plate, and the pressure edge strip 67 connected by the pressure edge cross bar 66 contacts the edge of the plate, avoiding the use of structural positioning to cooperate with the pressure plate frame 63 to apply downward pressure, thereby improving the fixing effect of the plate and preventing the positioning structure from blocking the plate and affecting the imprintable area and imprinting effect.

[0014] The auxiliary feeding mechanism 7 includes a long slide bar 71, the outer side of the long slide bar 71 is slidably connected to a supporting cross frame 72, the rear side of the supporting cross frame 72 is fixedly connected to a slide bar hanger 73, the bottom end of the slide bar hanger 73 is fixedly connected to an auxiliary material platform 74, the middle of the auxiliary material platform 74 is fixedly connected to two guide slide bars 713, a feed plate 75 is slidably connected above the guide slide bar 713, the bottom surface of the feed plate 75 is fixedly connected to an upper tooth block 76, and the lower side of the upper tooth block 76 is meshed with a gear 7 7, the two sides of the gear 77 are rotatably connected with a tooth seat plate 710, the bottom end of the tooth seat plate 710 is fixedly connected with a tooth seat slide groove 711, the inner side of the tooth seat slide groove 711 is slidably connected with a lower tooth block 78, the rear side of the support frame 1 is fixedly connected with a side support rod 712, the top surface of the feed plate 75 is fixedly connected with a blocking rod 714, the long slide bar 71 is fixedly connected with the side groove arc plate 2, the lower tooth block 78 is meshed with the gear 77, the front end of the lower tooth block 78 is fixedly connected with a touch plate 79, and the lower tooth block 78 The rear side is fixedly connected with an elastic spring, and the two ends of the elastic spring are respectively fixedly connected with the lower tooth block 78 and the end of the tooth seat slide groove 711. A through groove is opened on the top surface of the middle part of the auxiliary material platform 74, and the through groove is slidably connected with the upper tooth block 76. Transfer structures 9 are provided on both sides of the groove plate 8. The transfer structure 9 includes a guide wheel 91, which is rotatably connected to the inner wall of the top end of the support frame 1 on both sides. The outer side of the guide wheel 91 is meshed with a chain 92, and the side of the chain 92 is fixedly connected with a chain rod 93. The chain 92 is symmetrically distributed about the vertical center line of the support frame 1, so that the chain rod 93 pushes the objects in the groove plate 8 to move to the specified position. When the plate is located above the auxiliary material platform 74, the feeding plate 75 drives the connected blocking rod 714 to push the plate along the flush platform plate 3 to the top of the chain 92, and uses the chain 92 to drive the plate to move to the specified position for engraving. The auxiliary material platform 74 moves to assist in carrying heavier objects and move the objects to the specified position, thereby improving the efficiency of the engraving process.

[0015] Working principle: When the threaded rod 51 is driven to rotate by an external motor, the threaded rod 51 rotates and drives the connected shifting rod seat 52 to move horizontally along the horizontal shifting frame 4. When the cylinder 53 on the shifting rod seat 52 extends downward to perform imprinting and approaches the object to be imprinted, the cylinder 53 pushes the imprinting end 54 to move downward and drives the linkage rod 55 to move together. The linkage rod 55 pushes the connected pressure rod strip 56 to drive the circle rod 57 to slide downward along the connection of the platform plate 3, so that the circle rod 57 pushes the deflection turning rod 58 to deflect around the connection of the bottom surface of the platform plate 3, thereby driving the inclined slot rod 59 to apply pressure to the inclined slot rod 59 through the deflection turning rod 58. The inclined groove rod 59 pushes the telescopic slide rod 510 to slide through the inner wall of the groove plate 8, and the telescopic slide rods 510 approach each other through the connected pressure push plate 511 to clamp the objects in the groove plate 8. As the cylinder 53 continues to move, the ring rod 57 moves downward in sequence, so that the telescopic slide rod 510 pushes the pressure push plate 511 to press the objects. The telescopic slide rod 510 begins to shrink due to the reaction force of the objects being squeezed, so that the pressure push plate 511 contacts the placement position of the positioning objects, and adjusts the placement position of the box-shaped objects placed in the groove plate 8, which plays a role in correcting the placement position and improving the engraving position and effect. When processing plate-like items, the plate is placed above the platform plate 3, and the cylinder 53 is extended to push the imprinting end 54 downward, so that the pressure rod strip 56 slides downward along the vertical pressure plate 61 and squeezes the spring sheet 62, so that the spring sheet 62 pushes the vertical pressure plate 61 to slide along the vertical short rod 64 close to the top surface of the platform plate 3 after being compressed, and the edge of the plate is pressed to prevent the plate from deforming and bulging to affect the imprinting effect. At the same time, when the size of the plate to be imprinted is small, the position of the slide slot frame 68 can be manually adjusted to allow the slide slot to slide downward. The frame 68 slides along the inner groove of the pressure plate frame 63. After the groove frame 68 moves, it pushes the pressure plate hinge rod 65 on the connected side. When the groove frame 68 approaches the pressure plate frame 63 on the side farther away, the pressure plate hinge rods 65 on both sides deflect at the same time to push the connected edge pressing cross bar 66 to the edge of the plate. The edge pressing strip 67 connected by the edge pressing cross bar 66 contacts the edge of the plate, avoiding the use of structural positioning to cooperate with the pressure plate frame 63 to apply downward pressure, thereby improving the fixing effect of the plate and preventing the positioning structure from blocking the plate and affecting the imprintable area and imprinting effect. When the cut plates or box-shaped articles are conveyed to the auxiliary material platform 74 through the transmission, the auxiliary material platform 74 is pushed to move through the connected sliding rod hanger 73, so that the sliding rod hanger 73 drives the supporting cross frame 72 to move along the long sliding rod 71. At this time, the auxiliary material platform 74 is close to the supporting frame 1, so that the pressure plate 79 on the bottom surface of the auxiliary material platform 74 contacts the side support rod 712. After the pressure plate 79 is pressed, it pushes the lower tooth block 78 to slide along the tooth seat slide groove 711 and squeezes the spring. At the same time, the lower tooth block 78 moves to drive the meshing gear 77 to rotate, so that the gear 77 rotates and the connected upper tooth block 76 is close to the supporting frame 1, so that the upper tooth block 76 connected to the feeding plate 75 extends to the concave The objects on the continuous feeding plate 75 are fed into the groove plate 8. After the feeding plate 75 is reset according to the above process, the guide wheel 91 rotates to drive the chain rod 93 connected to the chain 92 to move, so that the chain rod 93 pushes the objects in the groove plate 8 to move to the specified position. When the plate is located above the auxiliary material table 74, the feeding plate 75 drives the connected blocking rod 714 to push the plate along the flush platform plate 3 to the top of the chain 92, and uses the chain 92 to move the plate to the specified position for engraving. The auxiliary material table 74 is moved to assist in carrying heavier objects and move the objects to the specified position, thereby improving the efficiency of the engraving process.

[0016] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A precise positioning device for a laser engraving machine, comprising a support frame (1), characterized in that: Side groove arc plates (2) are fixedly connected to both sides of the top surface of the support frame (1), two platform plates (3) are fixedly connected to the top surface of the support frame (1), a groove plate (8) is fixedly connected between the two platform plates (3), a transverse frame (4) is slidably connected between the two side groove arc plates (2), a laser engraving mechanism (5) is arranged on the outer side of the transverse frame (4), a pressure plate clamping mechanism (6) is arranged above the platform plate (3), and an auxiliary feeding mechanism (7) is arranged at the rear of the support frame (1); The laser engraving mechanism (5) comprises a threaded rod (51), the outer side surface of the threaded rod (51) is threadedly connected to a rod shifting seat (52), a cylinder (53) is mounted on the top end of the rod shifting seat (52), the bottom end of the cylinder (53) is fixedly connected to an engraving end (54), the top edge of the engraving end (54) is fixedly connected to a linkage rod (55), both ends of the linkage rod (55) are fixedly connected to a pressure rod strip (56), the side surface of the pressure rod strip (56) is fixedly connected to a ring rod (57), the bottom surface of each platform plate (3) is hingedly connected to two inclined slot rods (59), the side surface of the inclined slot rod (59) is fixedly connected to a deflection turning rod (58), and the side surface of each inclined slot rod (59) is slidably connected to a telescopic sliding rod (510).

2. The precise positioning device for a laser marking machine according to claim 1, characterized in that: The end of the telescopic slide rod (510) is fixedly connected to a pressure push plate (511); the telescopic slide rod (510) is a telescopic structure; the telescopic slide rod (510) slides from the outer side surface of the groove plate (8) to the inside.

3. The precise positioning device for a laser marking machine according to claim 2, characterized in that: The threaded rod (51) is rotatably connected to the end of the transverse frame (4), the circle rod (57) slides through the top surface of the platform plate (3) to the bottom surface, and the deflection bend rod (58) is slidably connected to the bottom end of the circle rod (57).

4. The precise positioning device for a laser marking machine according to claim 3, characterized in that: The pressure plate clamping mechanism (6) comprises a vertical pressure plate (61), the bottom surface of the vertical pressure plate (61) is fixedly connected to a pressure plate frame (63), the side surface of the vertical pressure plate (61) is provided with a spring sheet (62), the four corners of the pressure plate frame (63) are slidably connected to vertical short rods (64), the inner side of the pressure plate frame (63) is slidably connected to a slide groove frame (68), the inner side of the slide groove frame (68) is provided with two edge pressing cross bars (66), both ends of each of the edge pressing cross bars (66) are hingedly connected to a pressure plate hinge rod (65), and the side of the edge pressing cross bar (66) away from the pressure plate frame (63) is fixedly connected to an edge pressing strip (67).

5. The precise positioning device for a laser marking machine according to claim 4, characterized in that: The two ends of the spring sheet (62) are respectively fixedly connected to the pressure rod strip (56) and the pressure plate frame (63); the four vertical short rods (64) are fixedly connected to the top surface of the pressure plate frame (63) in groups of two; and the ends of the two pressure plate hinge rods (65) away from the edge pressure cross rod (66) are respectively hingedly connected to the slide groove frame (68) and the pressure plate frame (63).

6. The precise positioning device for a laser marking machine according to claim 5, characterized in that: The auxiliary feeding mechanism (7) comprises a long sliding rod (71), the outer side surface of the long sliding rod (71) is slidably connected to a supporting cross frame (72), the rear side surface of the supporting cross frame (72) is fixedly connected to a sliding rod hanger (73), the bottom end of the sliding rod hanger (73) is fixedly connected to an auxiliary material platform (74), the middle part of the auxiliary material platform (74) is fixedly connected to two guide slide bars (713), the upper part of the guide slide bar (713) is slidably connected to a feeding plate (75), and the bottom of the feeding plate (75) is fixedly connected to the auxiliary material platform (74). An upper tooth block (76) is fixedly connected to the surface, a gear (77) is meshingly connected to the lower portion of the upper tooth block (76), a gear (77) is rotatably connected to tooth seat plates (710) on both sides of the gear (77), a tooth seat slide groove (711) is fixedly connected to the bottom end of the tooth seat plate (710), a lower tooth block (78) is slidably connected to the inner side of the tooth seat slide groove (711), a side support rod (712) is fixedly connected to the rear side surface of the support frame (1), and a blocking rod (714) is fixedly connected to the top surface of the feeding plate (75).

7. The precise positioning device for a laser marking machine according to claim 6, characterized in that: The long sliding rod (71) is fixedly connected to the side groove arc plate (2), the lower tooth block (78) is meshingly connected to the gear (77), the front end of the lower tooth block (78) is fixedly connected to a touch pressure plate (79), the rear side of the lower tooth block (78) is fixedly connected to an elastic spring, and the two ends of the elastic spring are respectively fixedly connected to the lower tooth block (78) and the end of the tooth seat slide groove (711), and a through groove is opened on the top surface of the middle part of the auxiliary material table (74), and the through groove is slidably connected to the upper tooth block (76).

8. The precise positioning device for a laser marking machine according to claim 7, characterized in that: Transfer structures (9) are provided on both sides of the groove plate (8), and the transfer structure (9) comprises guide wheels (91), the guide wheels (91) are rotatably connected to the inner walls of the top ends of the support frame (1) on both sides, the outer sides of the guide wheels (91) are meshingly connected to chains (92), the sides of the chains (92) are fixedly connected to chain rods (93), and the chains (92) are symmetrically distributed about the vertical center line of the support frame (1).

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