Material sheet clamp and feeding and discharging mechanism for double-head laser marking machine

Abstract

The utility model provides a material sheet clamp which comprises a clamp supporting plate, a material sheet supporting plate, a clamp air cylinder, an air cylinder connecting block and two clamping portions, the clamp air cylinder is arranged in the middle of the clamp supporting plate, and the air cylinder connecting block is connected with the clamp air cylinder. The clamping part comprises a pull rod, a stretching rod and a pressing block, one end of the pull rod is rotationally connected with the cylinder connecting block, the pull rod inclines relative to an operating shaft of the clamp cylinder, a rod body of the stretching rod is rotationally connected with one end, deviating from the cylinder connecting block, of the pull rod, and the pressing block is arranged on one side, deviating from the stretching rod, of the stretching rod; the material supporting sheet plate is arranged on the side, away from the clamp air cylinder, of the clamp supporting plate, and the material supporting sheet plate is located between the pressing blocks of the two clamping parts. The utility model further provides a feeding and discharging mechanism used for the double-head laser marking machine, the feeding and discharging mechanism comprises an operation platform plate, a reciprocating moving trolley and the material sheet clamp, the reciprocating moving trolley is movably arranged on the operation platform plate, and the clamp supporting plate is arranged on the reciprocating moving trolley. According to the utility model, the loading and unloading efficiency of the double-head laser marking machine can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor electronic product production, and in particular to a sheet fixture and a loading and unloading mechanism for a double-head laser marking machine. Background Art

[0002] A double-head laser marking machine is a commonly used device for marking the finished product (hereinafter referred to as the sheet) of integrated circuit packaging in the form of a plate. It is used to laser mark the sheet to show the required etched pattern and text. Due to the small size of the sheet, in order to achieve rapid loading of the double-head laser marking machine, the prior art mostly adopts mechanical loading operation. For example, the Chinese utility model patent with the public number CN211564845U discloses a loading device and a laser marking machine, and the loading device includes a positioning mechanism and a pushing mechanism. The positioning mechanism is used to position the material box, and the material box is loaded with a plurality of card-type chips; the pushing mechanism includes a mounting seat, a driving assembly and a pushing rod arranged opposite to the positioning mechanism, the driving assembly is arranged on the mounting seat, the driving assembly is connected to the pushing rod in a transmission manner, and the pushing rod is provided with a pushing groove. The loading device of the utility model improves the efficiency of loading card-type chips and improves the yield rate of card-type chip production. However, in actual use, it has the following problems: first, it uses a push rod to push the card-type chip (i.e., sheet) in the material box out of the material box to achieve automatic loading, and the loading efficiency is low; second, it does not have a material unloading component after marking. Therefore, how to improve the loading and unloading efficiency of the double-head laser marking machine is the main problem to be solved. Summary of the invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems and provides a sheet clamp and a loading and unloading mechanism for a double-head laser marking machine, which can improve the loading and unloading efficiency of the double-head laser marking machine.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A sheet clamp comprises a clamp support plate, a sheet support plate, a clamp cylinder, a cylinder connecting block and two clamping parts, wherein the clamp cylinder is installed in the middle of the clamp support plate, the cylinder connecting block is connected to the clamp cylinder, and the two clamping parts are located on opposite sides of the cylinder connecting block and are both hinged to the cylinder connecting block;

[0006] The clamping part includes a pull rod, a stretch rod and a pressure block, one end of the pull rod is rotatably connected to the cylinder connecting block, the pull rod is inclined relative to the working axis of the clamp cylinder, the rod body of the stretch rod is rotatably connected to one end of the pull rod away from the cylinder connecting block, and the pressure block is arranged on a side of the stretch rod away from the pull rod;

[0007] The supporting sheet is arranged on a side of the clamp supporting plate away from the clamp cylinder, and the supporting sheet is located between the pressing blocks of the two clamping parts.

[0008] Furthermore, it also includes a material blocking needle, which is fixed on the clamp support plate and penetrates the support plate.

[0009] Furthermore, the sheet clamp also includes a transverse guide shaft, which is installed at the end of the clamp support plate and extends along the width direction of the clamp support plate; the end of the stretch rod is slidably sleeved on the transverse guide shaft.

[0010] A loading and unloading mechanism for a double-head laser marking machine comprises a working platform plate, a reciprocating trolley and the above-mentioned sheet clamp, wherein the working platform plate corresponds to the working end of the double-head laser marking machine, and the opposite ends of the working platform plate extend in a direction away from the working end of the double-head laser marking machine, the reciprocating trolley is movably mounted on the working platform plate, and the reciprocating trolley can reciprocate along the length direction of the working platform plate; the clamp support plate is mounted on the reciprocating trolley.

[0011] Furthermore, it also includes a displacement reading component, which includes a reciprocating displacement driving component and a grating scale component, the reciprocating displacement driving component is installed on the working platform board, and the reciprocating trolley is installed on the reciprocating displacement driving component; the grating scale component includes a scale grating and a grating reading head, the scale grating is installed on the working platform board and extends along the length direction of the working platform board, and the grating reading head is connected to the reciprocating trolley; the reciprocating displacement driving component can drive the reciprocating trolley to reciprocate along the length direction of the working platform board.

[0012] Furthermore, the reciprocating displacement driving component includes a servo motor, a pulley, a belt and a slide rail, the servo motor is installed at one end of the working platform plate, one pulley is sleeved on the servo motor, the other pulley is installed at the other end of the working platform plate, the belt is sleeved on the outside of the two pulleys, and the slide rail is installed on the working platform plate and extends along the length direction of the working platform plate; the reciprocating trolley is fixed to the belt through a synchronous belt connecting block and is slidably sleeved on the slide rail.

[0013] Furthermore, the reciprocating trolley includes a back plate, a lifting start cylinder and a guide plate, the back plate is fixed to the synchronous belt connecting block, the lifting start cylinder is installed on the back plate, the guide plate is slidably connected to the back plate and the guide plate is connected to the lifting start cylinder, the guide plate extends toward the working end, and the fixture support plate is connected to one end of the guide plate away from the lifting start cylinder.

[0014] Furthermore, it also includes a light-shielding dust hood, which is arranged outside the working end of the double-head laser marking machine, and the light-shielding dust hood is connected to the opposite ends of the working platform plate to open a feed inlet and a discharge outlet.

[0015] Furthermore, the loading and unloading mechanism for the double-head laser marking machine also includes a dust removal component, which is respectively installed at the feed port and the discharge port; the dust removal component includes a bracket plate, a brush and a dust suction head, the bracket plate is connected to the light-shielding dust hood, and the brush and the dust suction head are both installed on the bracket plate.

[0016] Furthermore, the loading and unloading mechanism for the double-head laser marking machine also includes a beam sensor, and each end of the work platform plate is provided with a beam sensor, and the beam sensor is used to sense whether the sheet clamp holds a material. Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0017] When using the above-mentioned loading and unloading mechanism for the double-head laser marking machine, a plurality of reciprocating trolleys can be provided, the sheet is clamped on the sheet fixture, and the plurality of reciprocating trolleys carry the sheet fixture clamping the sheet to move to the working end of the double-head laser marking machine in turn for marking operation, which can improve the loading efficiency of the double-head laser marking machine. Since the opposite ends of the working platform plate extend in the direction away from the working end of the double-head laser marking machine, when the marking operation of the sheet is completed, the reciprocating trolley continues to move along the working platform plate with the marked sheet, which can realize the unloading operation of the double-head laser marking machine. It can be seen that the utility model can improve the loading and unloading efficiency of the double-head laser marking machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a loading and unloading mechanism for a double-head laser marking machine.

[0019] Figure 2 This is a schematic diagram of the installation structure of the reciprocating trolley.

[0020] Figure 3 It is a schematic diagram of the structure of the blank fixture.

[0021] Figure 4 Figure 3 Schematic diagram of the bottom structure of the middle sheet fixture.

[0022] In the attached drawings, 1-working platform plate, 11-platform plate, 111-strip groove, 12-middle hanging plate, 2-reciprocating trolley, 21-back plate, 211-back plate slider, 212-lifting guide rail, 22-lifting start cylinder, 23-guide plate, 3-sheet clamp, 31-clamp support plate, 32-sheet support plate, 33-clamp cylinder, 34-cylinder connecting block, 35-clamping part, 351-pull rod, 352-stretching rod, 353-pressing Block, 354-colloid pressure block, 36-stop needle, 37-lateral guide shaft, 4-reciprocating displacement drive, 41-servo motor, 42-pulley, 43-belt, 44-slide rail, 5-grating ruler, 51-scale grating, 6-light-shielding dust cover, 61-feeding port, 62-discharging port, 7-dust removal component, 71-bracket plate, 72-brush, 73-dust head, 8-reciprocating sensor, 100-operating end, 101-sheet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a component centered thereon. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a component centered thereon at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] like Figures 1 to 4As shown, a preferred embodiment of the utility model provides a loading and unloading mechanism for a double-head laser marking machine, including a work platform 1, a reciprocating trolley 2 and a sheet clamp 3. The work platform 1 corresponds to the work end 100 of the double-head laser marking machine, and the opposite ends of the work platform 1 extend in a direction away from the work end 100 of the double-head laser marking machine. The reciprocating trolley 2 is movably mounted on the work platform 1, and the reciprocating trolley 2 can reciprocate along the length direction of the work platform 1; the sheet clamp 3 includes a clamp support plate 31, and the clamp support plate 31 is mounted on the reciprocating trolley 2, and the sheet clamp 3 is used to clamp the sheet 101.

[0027] When using the above-mentioned loading and unloading mechanism for the double-head laser marking machine, the reciprocating trolley 2 can be set to multiple, the sheet is clamped on the sheet fixture 3, and multiple reciprocating trolleys 2 carry the sheet fixture 3 holding the sheet 101 and move to the working end 100 of the double-head laser marking machine in turn for marking, which can improve the loading efficiency of the double-head laser marking machine. Since the opposite ends of the working platform plate 1 extend in a direction away from the working end 100 of the double-head laser marking machine, when the marking operation of the sheet is completed, the reciprocating trolley 2 continues to move along the working platform plate 1 with the marked sheet 101, and the unloading operation of the double-head laser marking machine can be realized. It can be seen that the utility model can improve the loading and unloading efficiency of the double-head laser marking machine.

[0028] In this embodiment, the working platform plate 1 includes a platform plate 11 and a middle hanging plate 12. The double-head laser marking machine is installed on one side of the platform plate 11, and the working end 100 of the double-head laser marking machine faces the platform plate 11. The middle hanging plate 12 is installed in the middle of the side of the platform plate 11 away from the double-head laser marking machine, and the middle hanging plate 12 extends along the length direction of the platform plate 11 to divide the side of the platform plate 11 away from the double-head laser marking machine into two moving areas. Each moving area is equipped with a reciprocating trolley 2 and a sheet clamp 3. The two sheet clamps 3 alternately convey the sheet 101 toward the working end 100 and promptly remove the marked sheet 101 from the working end 100, which can improve the loading and unloading efficiency of the double-head laser marking machine.

[0029] In this embodiment, the loading and unloading mechanism for the double-head laser marking machine also includes a displacement reading component. Specifically, a displacement reading component is provided in a moving area. The displacement reading component includes a reciprocating displacement driving member 4 and a grating scale member 5. The reciprocating displacement driving member 4 is mounted on the working platform plate 1, and the reciprocating trolley 2 is mounted on the reciprocating displacement driving member 4. Specifically, the reciprocating displacement driving member 4 includes a servo motor 41, a pulley 42, a belt 43 and a slide rail 44. The servo motor 41 is mounted on one end of the middle hanging plate 12, a pulley 42 is sleeved on the servo motor 41, and another pulley 42 is mounted on the other end of the middle hanging plate 12. The belt 43 is sleeved on the outside of the two pulleys 42, and the slide rail 44 is mounted on the middle hanging plate 12 and extends along the length direction of the middle hanging plate 12; the reciprocating trolley 2 is fixed to the belt 43 through a synchronous belt connecting block and is slidably sleeved with the slide rail 44, and the synchronous belt connecting block is not shown in the figure. When the servo motor 41 is running, the pulley 42 drives the synchronous belt link block to move along the length direction of the middle hanging plate 12 through the belt 43, thereby driving the reciprocating trolley 2 to reciprocate along the length direction of the middle hanging plate 12. When the loading and unloading mechanism of the double-head laser marking machine is actually used, the upper sides of the platform plate 11 are equipped with a material discharge component and a material pick-up component, and the material discharge component and the material pick-up component can be a robot or a suction cup in the prior art. The reciprocating trolley 2 reciprocates along the length direction of the middle hanging plate 12. The reciprocating trolley 2 can move to the bottom of the material discharge component and wait for the material discharge component to place the material 101 on the material clamp 3; when the material 101 completes the marking operation, the reciprocating trolley 2 can move to the bottom of the material picking component, and the material picking component takes the marked material 101 from the material clamp 3. After the material 101 is taken away, the empty material clamp 3 moves again to the bottom of the material discharge component and waits for material discharge. The alternating movement of the two reciprocating trolleys 2 can reduce the waiting time for material discharge or material picking, thereby improving the loading and unloading efficiency of the double-head laser marking machine.

[0030] The grating ruler component 5 includes a scale grating 51 and a grating reading head. The scale grating 51 is installed on the middle hanging plate 12 and extends along the length direction of the middle hanging plate 12. The grating reading head is connected to the reciprocating trolley 2. When the reciprocating driving component 4 drives the reciprocating trolley 2 to reciprocate along the length direction of the middle hanging plate 12, the grating reading head moves with the reciprocating trolley 2, and can realize the accurate calculation of the moving distance of the reciprocating trolley 2, so that the sheet fixture 3 can be accurately moved to the working end 100 of the double-head laser marking machine for marking. The grating ruler component 5 adopts a linear grating ruler in the prior art. The use of the scale grating 51 and the grating reading head is well known to those skilled in the art and will not be repeated here.

[0031] In this embodiment, the reciprocating trolley 2 includes a back plate 21, a lifting start cylinder 22 and a guide plate 23. The back plate 21 is fixed to the synchronous belt connecting block, and the side of the back plate 21 facing the slide rail 44 is slidably sleeved on the slide rail 44. Specifically, a back plate slider 211 is provided on the side of the back plate 21 facing the slide rail 44, and the back plate slider 211 is slidably sleeved on the slide rail 44. The lifting start cylinder 22 is installed on the side of the back plate 21 away from the synchronous belt connecting block. The guide plate 23 is slidably connected to the back plate 21 and connected to the lifting start cylinder 22. The guide plate 23 extends toward the working end 100. Specifically, a lifting guide rail 212 is provided along the height direction on the side of the back plate 21 away from the fixed synchronous belt connecting block, and the guide plate 23 is slidably sleeved on the lifting guide rail 212. The platform plate 11 is provided with a strip groove 111 corresponding to the guide plate 23, and the strip groove 111 extends along the length direction of the platform plate 11. The guide plate 23 extends from one side of the middle hanging plate 12 to the side of the working end 100 away from the middle hanging plate 12. The fixture support plate 31 is connected to one end of the guide plate 23 away from the lifting start cylinder 22.

[0032] When the lifting start cylinder 22 is running, the operating shaft of the lifting start cylinder 22 pushes the guide plate 23 in the direction away from the middle hanging plate 12, and the guide plate 23 drives the sheet clamp 3 to rise. At this time, the sheet clamp 3 reaches a height at which a material discharge component or a material pick-up component can operate, and the sheet clamp 3 needs to maintain this height from the material discharge operation to the material pick-up operation; on the contrary, the sheet clamp 3 drops to a lower height, and when the sheet clamp 3 completes the material pick-up operation, the sheet clamp 3 drops to a lower height and then moves to the bottom of the material discharge component. The sheet clamp 3 can rise or fall, so that the material pick-up or discharge operations of the two sheet clamps 3 can avoid each other.

[0033] In this embodiment, the sheet clamp 3 includes the aforementioned clamp support plate 31, a sheet support plate 32, a clamp cylinder 33, a cylinder connecting block 34, two clamping parts 35 and a transverse guide shaft 37. The clamp cylinder 33 is installed in the middle of the clamp support plate 31, the cylinder connecting block 34 is connected to the clamp cylinder 33, and the two clamping parts 35 are located on opposite sides of the cylinder connecting block 34 and are both hinged to the cylinder connecting block 34.

[0034] The clamping part 35 includes a pull rod 351, a stretching rod 352 and a pressure block 353. One end of the pull rod 351 is rotatably connected to the cylinder connecting block 34. The pull rod 351 is inclined relative to the working axis of the clamp cylinder 33. The rod body of the stretching rod 352 is rotatably connected to one end of the pull rod 351 away from the cylinder connecting block 34. The pressure block 353 is arranged on the side of the stretching rod 352 away from the pull rod 351. Specifically, two pressure blocks 353 are arranged on each stretching rod 352, and the two pressure blocks 353 are arranged at intervals along the length direction of the stretching rod 352. The transverse guide shaft 37 is installed at the end of the clamp support plate 31 and extends along the width direction of the clamp support plate 31; the end of the stretching rod 352 is slidably sleeved on the transverse guide shaft 37. The sheet support plate 32 is arranged on the side of the clamp support plate 31 away from the clamp cylinder 33, and the sheet support plate 32 is located between the pressure blocks 353 of the two clamping parts 35. A glue pressing block 354 extends from the pressing block 353 toward the supporting sheet 32 ​​. A slot is concavely provided at a position of the supporting sheet 32 ​​corresponding to the glue pressing block 354 . The glue pressing block 354 can be inserted into the slot.

[0035] The clamp cylinder 33 pushes the cylinder connecting block 34 to move toward the clamp cylinder 33, and the cylinder connecting block 34 drives the pull rods 351 on both sides to swing. The angle between the pull rods 351 and the cylinder axis of the clamp cylinder 33 increases, so that the extension rods 352 of the two clamping parts 35 move in directions away from each other, and the distance between the pressing blocks 353 of the two clamping parts 35 increases. At this time, the material sheet 101 can be placed between the two pressing blocks 353 or the clamping of the material sheet 101 can be relaxed; when the clamp cylinder 33 pushes the cylinder connecting block 34 away from the clamp The cylinder 33 moves in the direction of rotation, and the cylinder connecting block 34 drives the pull rods 351 on both sides to swing. The angle between the pull rods 351 and the cylinder axis of the clamp cylinder 33 is reduced, so that the extension rods 352 of the two clamping parts 35 move toward each other, and the distance between the pressure blocks 353 of the two clamping parts 35 is reduced. The pressure blocks 353 of the two clamping parts 35 swing toward the supporting plate 32 and the rubber pressure blocks 354 are inserted into the card slot, so that the sheet 101 is placed on the supporting plate 32, thereby clamping the sheet 101 and the supporting plate 32.

[0036] In this embodiment, the sheet clamp 3 further includes a stopper needle 36, which is fixed on the clamp support plate 31 and is arranged through the sheet support plate 32. Specifically, the stopper needle 36 is distributed at intervals around the sheet support plate 32. The setting of the stopper needle 36 can prevent the sheet 101 from detaching from the sheet support plate 32.

[0037] In this embodiment, the loading and unloading mechanism for the double-head laser marking machine also includes a light-shielding dust cover 6, which is arranged outside the working end 100 of the double-head laser marking machine to prevent external dust and light from affecting the marking operation. The light-shielding dust cover 6 is connected to the opposite ends of the working platform plate 1 and is provided with a feed port 61 and a discharge port 62. The strip groove 111 is located in the area of ​​the light-shielding dust cover 6 and is connected to the feed port 61 and the discharge port 62. The feed port 61 and the discharge port 62 are provided for the reciprocating trolley 2 to enter and exit.

[0038] In this embodiment, the loading and unloading mechanism for the double-head laser marking machine also includes a dust removal assembly 7, which is respectively installed at the feed port 61 and the discharge port 62. The dust removal assembly 7 includes a bracket plate 71, a brush 72 and a dust head 73. The bracket plate 71 is connected to the light-shielding dust hood 6. The brush 72 and the dust head 73 are both installed on the bracket plate 71. Specifically, the brush 72 is located at the end of the dust head 73 away from the light-shielding dust hood 6. When the reciprocating trolley 2 is placed on the sheet 101 to enter or exit the light-shielding dust hood 6, the brush 72 can clean the sheet 101, and the dust head 73 can suck away the dust in time, so as to keep the cleanliness of the sheet 101 at all times.

[0039] In this embodiment, the loading and unloading mechanism for the double-head laser marking machine also includes a beam sensor 8. The ends of the work platform plate 1 are respectively equipped with a beam sensor 8, which is used to sense whether the material is clamped on the sheet fixture 3. Specifically, the opposite ends of the platform plate 11 are respectively fixed with beam sensors 8 through fixed seats 9. The beam sensor 8 corresponding to one end of the feed port 61 is used to sense whether the sheet 101 has been placed on the sheet fixture 3; the beam sensor 8 corresponding to one end of the discharge port 62 is used to sense whether the sheet 101 on the sheet fixture 3 has been taken away. The use of the beam sensor 8 is well known to those skilled in the art and will not be repeated again.

[0040] It can be understood that the grating scale component 5 is not limited to the linear grating scale in this embodiment. In other embodiments, the grating scale component 5 can adopt a closed grating scale in the prior art, and technical personnel in this field can install it on the components in this solution according to the installation requirements of their components.

[0041] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modified changes completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A blank fixture, Features: The clamping device comprises a clamp supporting plate (31), a sheet supporting plate (32), a clamp cylinder (33), a cylinder connecting block (34) and two clamping parts (35), wherein the clamp cylinder (33) is installed in the middle of the clamp supporting plate (31), the cylinder connecting block (34) is connected to the clamp cylinder (33), and the two clamping parts (35) are located on opposite sides of the cylinder connecting block (34) and are both hinged to the cylinder connecting block (34); The clamping portion (35) comprises a pull rod (351), a stretch rod (352) and a pressure block (353); one end of the pull rod (351) is rotatably connected to the cylinder connecting block (34); the pull rod (351) is inclined relative to the working axis of the clamp cylinder (33); the rod body of the stretch rod (352) is rotatably connected to one end of the pull rod (351) away from the cylinder connecting block (34); and the pressure block (353) is arranged on a side of the stretch rod (352) away from the pull rod (351); The material supporting plate (32) is arranged on a side of the clamp supporting plate (31) away from the clamp cylinder (33), and the material supporting plate (32) is located between the pressing blocks (353) of the two clamping parts (35).

2. A blank holder as claimed in claim 1, Features: It also includes a material blocking needle (36), which is fixed on the clamp support plate (31) and is arranged to penetrate the material support plate (32).

3. A blank holder as claimed in claim 1, Features: The sheet clamp also includes a transverse guide shaft (37), which is installed at the end of the clamp support plate (31) and extends along the width direction of the clamp support plate (31); the end of the stretch rod (352) is slidably sleeved on the transverse guide shaft (37).

4. A loading and unloading mechanism for a double-head laser marking machine, Features: It comprises a working platform plate (1), a reciprocating trolley (2) and a sheet clamp (3) as described in any one of claims 1 to 3, wherein the working platform plate (1) corresponds to the working end (100) of the double-head laser marking machine, and the opposite ends of the working platform plate (1) extend in a direction away from the working end (100) of the double-head laser marking machine, the reciprocating trolley (2) is movably mounted on the working platform plate (1), and the reciprocating trolley (2) can reciprocate along the length direction of the working platform plate (1); the clamp support plate (31) is mounted on the reciprocating trolley (2).

5. A loading and unloading mechanism for a double-head laser marking machine as claimed in claim 4, Features: It also includes a displacement reading component, which includes a reciprocating displacement driving component (4) and a grating ruler component (5). The reciprocating displacement driving component (4) is installed on the working platform plate (1), and the reciprocating trolley (2) is installed on the reciprocating displacement driving component (4); the grating ruler component (5) includes a scale grating (51) and a grating reading head, the scale grating (51) is installed on the working platform plate (1) and extends along the length direction of the working platform plate (1), and the grating reading head is connected to the reciprocating trolley (2); the reciprocating displacement driving component (4) can drive the reciprocating trolley (2) to reciprocate along the length direction of the working platform plate (1).

6. A loading and unloading mechanism for a double-head laser marking machine as claimed in claim 5, Features: The reciprocating driving member (4) comprises a servo motor (41), a pulley (42), a belt (43) and a slide rail (44); the servo motor (41) is mounted on one end of the working platform plate (1); one pulley (42) is sleeved on the servo motor (41); the other pulley (42) is mounted on the other end of the working platform plate (1); the belt (43) is sleeved on the outside of the two pulleys (42); the slide rail (44) is mounted on the working platform plate (1) and extends along the length direction of the working platform plate (1); the reciprocating trolley (2) is fixed to the belt (43) through a synchronous belt connecting block and is slidably sleeved on the slide rail (44).

7. A loading and unloading mechanism for a double-head laser marking machine as claimed in claim 6, Features: The reciprocating trolley (2) comprises a back plate (21), a lifting start cylinder (22) and a guide plate (23); the back plate (21) is fixed to the synchronous belt connecting block; the lifting start cylinder (22) is mounted on the back plate (21); the guide plate (23) is slidably connected to the back plate (21) and the guide plate (23) is connected to the lifting start cylinder (22); the guide plate (23) extends toward the working end (100); and the fixture support plate (31) is connected to one end of the guide plate (23) away from the lifting start cylinder (22).

8. A loading and unloading mechanism for a double-head laser marking machine as claimed in claim 4, Features: It also includes a light-shielding dust hood (6), which is arranged outside the working end (100) of the double-head laser marking machine, and the light-shielding dust hood (6) is connected to the opposite ends of the working platform plate (1) and is provided with a feed inlet (61) and a discharge outlet (62).

9. A loading and unloading mechanism for a double-head laser marking machine as claimed in claim 8, Features: The loading and unloading mechanism for the double-head laser marking machine also includes a dust removal component (7), and the dust removal component (7) is respectively installed at the feed port (61) and the discharge port (62); the dust removal component (7) includes a bracket plate (71), a brush (72) and a dust suction head (73), the bracket plate (71) is connected to the light-shielding dust hood (6), and the brush (72) and the dust suction head (73) are both installed on the bracket plate (71).

10. A loading and unloading mechanism for a double-head laser marking machine as claimed in claim 4, Features: The loading and unloading mechanism for the double-head laser marking machine also includes a beam sensor (8), and each end of the working platform plate (1) is provided with a beam sensor (8), and the beam sensor (8) is used to sense whether the sheet clamp (3) holds a material.

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