Anti-collision device of automatic focusing laser marking machine

Abstract

The utility model relates to the field of laser marking machines, and provides an anti-collision device of an automatic focusing laser marking machine, which comprises a laser marking machine, a workpiece and a conveying belt, the laser marking machine is fixedly connected with an automatic focusing anti-collision mechanism through a connecting plate. The automatic focusing anti-collision mechanism comprises a first bearing block, a second bearing block and an anti-collision assembly. The first bearing block is fixedly connected to the lower side of one end of the connecting plate, a first notch is formed in the first bearing block, a first connecting shaft is arranged in the first notch, a second notch is formed in the second bearing block, and a second connecting shaft is arranged in the second notch; the anti-collision assembly comprises a tension spring, a connecting rod and two anti-collision pads with the same structure and size, the upper end of the anti-collision assembly is connected to the first connecting shaft, and the lower end of the anti-collision assembly is connected to the second connecting shaft; according to the utility model, the automatic focusing anti-collision mechanism with the flexible characteristic is arranged, so that equipment damage caused by collision between the automatic focusing device of the laser marking machine and a workpiece can be effectively avoided, production stagnation caused by equipment damage is reduced, and the production progress is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser marking machine technical field, concretely relates to a kind of anti-collision device of automatic focusing laser marking machine. BACKGROUND

[0002] In modern industrial production, laser marking machine is widely used;Among them, automatic focusing laser marking machine can improve marking efficiency, but in actual use process, due to various reasons, its automatic focusing device can collide with the object to be marked, thereby damaging equipment, affecting production progress, increasing production cost;At present, many laser marking machine automatic focusing devices do not fully consider the anti-collision problem in design, lack effective anti-collision protection;When automatic focusing device encounters obstacles or the surface of the object to be marked is uneven in working process, collision is easy to occur, resulting in equipment damage;For example, in some high-speed laser marking machine, the moving speed of automatic focusing device is fast, if detection error or detection system failure occurs, the workpiece to be marked is not detected in time and corresponding anti-collision measures are taken, collision accident will occur, in addition, when the automatic focusing device of laser marking machine encounters large workpiece, obstacle or the surface of the object to be marked is uneven in working process, collision is also easy to occur, resulting in equipment damage;Therefore, it has important practical significance to study a kind of anti-collision device of automatic focusing laser marking machine. SUMMARY

[0003] The utility model discloses in order to solve above-mentioned technical problem, provide a kind of anti-collision device of automatic focusing laser marking machine, with the advantage of guaranteeing production equipment safety, solve the problem that laser marking machine automatic focusing device works and collides with workpiece or obstacle, resulting in equipment damage.

[0004] The technical scheme adopted by the utility model is: a kind of anti-collision device of automatic focusing laser marking machine, including laser marking machine, workpiece, conveying belt;Workpiece is located on the upper side of conveying belt, conveying belt is set in the front side of laser marking machine and is close to lower end position, laser marking machine is fixedly connected with automatic focusing anti-collision mechanism by connecting plate, and automatic focusing anti-collision mechanism includes first receiving block, second receiving block, anti-collision component;

[0005] The upper side end surface of first receiving block is fixedly connected in the lower side of one end of connecting plate, and first receiving block is internally provided with first gap, and first gap is provided with first connecting shaft in it;Second receiving block is provided with second gap in it, and second gap is provided with second connecting shaft in it, and the central position of the lower side end surface of first gap and the central position of the upper side end surface of second gap are provided with through hole;

[0006] The anti-collision assembly comprises a tension spring, a connecting rod, two anti-collision pads with the same structure and size; both of the anti-collision pads are in cylindrical structure, and a through hole is arranged at the center of the end face of each anti-collision pad; the connecting rod is in cylindrical structure, and a ring structure is arranged at the upper end and the lower end of the connecting rod; the connecting rod passes through the through hole arranged at the central position of the lower side end face of the first gap, the through holes arranged at the central positions of the end faces of the two anti-collision pads, and the through hole arranged at the central position of the upper side end face of the second gap in sequence from top to bottom; on the end face of the anti-collision pad, a magnetic block is embedded and installed at the symmetrical position of the upper side and the lower side of the through hole, and a mounting hole is arranged at the symmetrical position of the left side and the right side; the ring of the upper end of the tension spring is sleeved on the first connecting shaft, and the ring of the lower end is sleeved on the ring structure arranged at the upper end of the connecting rod; the ring structure arranged at the lower end of the connecting rod is sleeved on the second connecting shaft.

[0007] One of the anti-collision pads is fixedly installed on the lower side end face of the first receiving block through the mounting hole arranged on the end face of the anti-collision pad by means of a bolt, and the other anti-collision pad is fixedly installed on the upper side end face of the second receiving block through the mounting hole arranged on the end face thereof by means of a bolt; the upper and lower end faces of the two anti-collision pads are tightly and coincidentally arranged.

[0008] The laser marking machine comprises a workbench, a base is arranged at the upper rear side of the workbench, a linear actuator is fixedly connected to the upper side of the base, a photoelectric switch is installed on the lower left side of the linear actuator, the linear actuator comprises a sliding block arranged at the front side thereof, the sliding block is movable up and down along the guide rails on the two sides of the linear actuator, a right-angle connecting seat is fixedly installed on the front side of the sliding block, the right-angle connecting seat comprises a vertical surface and a horizontal surface which are perpendicular to each other, the lower side of the horizontal surface is fixedly installed with a laser emission system, and the left side of the laser emission system is connected with a marking head.

[0009] The anti-collision pads are all made of rubber material, the diameter of the anti-collision pad is greater than or equal to the width of the first receiving block and also greater than or equal to the width of the second receiving block, the surface of the embedded magnetic block of the anti-collision pad is flush with the surface of the anti-collision pad, and the positions of the embedded magnetic blocks of the two anti-collision pads correspond to each other.

[0010] The magnetic block is a neodymium iron boron magnet.

[0011] The first gap is in rectangular shape, the second gap is also in rectangular shape, and the rectangular shape width of the second gap is equal to the rectangular shape width of the first gap.

[0012] The first connecting shaft is a pin shaft, the second connecting shaft is the same pin shaft as the first connecting shaft, and the length direction of the first connecting shaft passes through the width direction of the first gap; the length direction of the second connecting shaft passes through the width direction of the second gap.

[0013] The diameter of the cylindrical structure of the connecting rod is smaller than the diameter of the through hole arranged at the central position of the end face of the anti-collision pad and also smaller than the diameter of the through hole arranged at the central position of the lower side end face of the first gap and the central position of the upper side end face of the second gap.

[0014] The displacement sensor is fixedly installed at the lower end of the second receiving block.

[0015] The utility model discloses the beneficial effects are:

[0016] 1. By setting up the automatic focusing anti -collision mechanism with the flexible feature, can effectively avoid the equipment damage of laser marking machine automatic focusing device because of the collision with workpiece or obstacle, guarantees the production equipment safety, reduces the production stagnation and maintenance cost because of equipment damage, ensures the production progress stability.

[0017] 2. Simple and reliable structure, easy to install and maintain. DETAILED DESCRIPTION

[0018] Figure 1 It is the working schematic view of the utility model;

[0019] Figure 2 It is the front view of the laser marking machine of the utility model;

[0020] Figure 3 It is the automatic focusing anti -collision mechanism schematic view of the utility model;

[0021] Figure 4 It is the anti -collision subassembly structure schematic view of the utility model;

[0022] Figure 5 It is the anti -collision pad end surface structure schematic view of the utility model.

[0023] Marked in the drawing: 1, laser marking machine;101, worktable;102, pedestal;103, linear actuator;104, laser emission system;105, right-angle connecting seat;106, sliding block;107, marking head;108, photoelectric switch;2, automatic focusing anti -collision mechanism;201, connecting plate;202, first receiving block;203, first connecting shaft;204, anti -collision subassembly;2041, tension spring;2042, connecting rod;2043, anti -collision pad;20431, through round hole;20432, magnetic block;20433, mounting hole;205, second receiving block;206, second connecting shaft;207, displacement sensor;208, first gap;209, second gap;3, workpiece;4, conveying belt. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] As Figures 1-5 The utility model discloses the technical scheme is: a kind of anti-collision device of automatic focusing laser marking machine, including laser marking machine 1, workpiece 3, conveying belt 4;Workpiece 3 is located on conveying belt 4 upside, conveying belt 4 is set in the front side of laser marking machine 1 close to lower end position, and laser marking machine 1 is fixedly connected with automatic focusing anti-collision mechanism 2 by connecting plate 201, and automatic focusing anti-collision mechanism 2 includes first receiving block 202, second receiving block 205, anti-collision assembly 204;

[0026] The upper side end surface of first receiving block 202 is fixedly connected in the lower side of one end of connecting plate 201, and first receiving block 202 is internally provided with first gap 208, and first gap 208 is provided with first connecting shaft 203;Second receiving block 205 is provided with second gap 209 in it, and second gap 209 is provided with second connecting shaft 206, and the central position of the lower side end surface of first gap 208 and the central position of the upper side end surface of second gap 209 are provided with through hole;

[0027] Anti-collision assembly 204 includes tension spring 2041, connecting rod 2042, two anti-collision pads 2043 of same structure and size;Two anti-collision pads 2043 are all cylindrical structure, and the central position of its end surface is provided with through hole 20431, connecting rod 2042 is cylindrical structure and the upper end and lower end of connecting rod 2042 are provided with annular structure, and connecting rod 2042 passes through the through hole of the central position of the lower side end surface of first gap 208, the through hole 20431 of the central position of the end surface of two anti-collision pads 2043 and the through hole of the central position of the upper side end surface of second gap 209 in turn from top to bottom, and on the end surface of anti-collision pad 2043, the upper side and lower side symmetrical position of through hole 20431 are embeddedly installed with magnetic block 20432, and the left side and right side symmetrical position are provided with mounting hole 20433, and the upper end of tension spring 2041 is sleeved on first connecting shaft 203, and the lower end of tension spring 2041 is sleeved on the annular structure of the upper end of connecting rod 2042, and the annular structure of the lower end of connecting rod 2042 is sleeved on second connecting shaft 206, and the elastic coefficient of tension spring 2041 and the length of connecting rod 2042 are matched to make anti-collision assembly 204 provide tension when working normally, and the connecting part is not loosened, and tension spring 2041 is deformed when collision occurs, and appropriate buffer force is provided;

[0028] One of the bumpers 2043 is fixedly installed on the lower end face of the first receiving block 202 by screwing the mounting hole 20433 provided on the end face of the bumper 2043, and the other bumper 2043 is fixedly installed on the upper end face of the second receiving block 205 by screwing the mounting hole 20433 provided on the end face of the bumper 2043. Since the upper end of the pull ring of the tension spring 2041 of the anti-collision assembly 204 is sleeved on the first connecting shaft 203, and the ring structure of the lower end of the connecting rod 2042 is sleeved on the second connecting shaft, and since the magnetic blocks 20432 are provided on the end faces of the two bumpers 2043, the opposite end faces of the two bumpers 2043 are tightly and coincidentally arranged in the normal working state due to the pulling force of the anti-collision assembly 204 and the suction force of the magnetic blocks 20432 provided on the end faces of the two bumpers 2043, so that the automatic focusing anti-collision mechanism 2 can work normally, and the automatic focusing anti-collision mechanism 2 can quickly recover after being deformed due to collision due to the pulling force of the anti-collision assembly 204 and the suction force of the magnetic blocks 20432 provided on the end faces of the two bumpers 2043.

[0029] As shown in Figure 2 The laser marking machine 1 comprises a workbench 101, a base 102 is provided on the upper rear side of the workbench 101, a linear actuator 103 is fixedly connected to the upper side of the base 102, a photoelectric switch 108 is installed on the lower left side face of the linear actuator 103, the linear actuator 103 comprises a sliding block 106 provided on the front side thereof, a right-angle connecting seat 105 is fixedly installed on the front side of the sliding block 106, the right-angle connecting seat 105 comprises a vertical face and a horizontal face which are perpendicular to each other, the lower side of the horizontal face is fixedly installed with a laser emitting system 104, and the left side of the laser emitting system 104 is connected with a marking head 107.

[0030] As shown in Figure 5 The bumpers 2043 are all made of rubber material and have elasticity, so that the bumpers 2043 can play a buffering role when collision occurs, and the safety of the equipment can be more favorably ensured; the diameters of the bumpers 2043 are greater than or equal to the width of the first receiving block 202 and also greater than or equal to the width of the second receiving block 205, so that the stability of the automatic focusing anti-collision mechanism 2 can be favorably ensured; the surfaces of the magnetic blocks 20432 embedded in the bumpers 2043 are flush with the surfaces of the bumpers 2043, and the positions of the magnetic blocks 20432 embedded in the two bumpers 2043 correspond to each other, so that the attraction force of the magnetic blocks 20432 can be used to accurately align and tightly fit the two bumpers 2043.

[0031] The magnetic blocks 20432 are neodymium-iron-boron magnets, which have the advantages of strong magnetic performance, good machinability, high cost performance and relative difficulty in breaking, and can favorably ensure the stability of the automatic focusing anti-collision mechanism 2 in normal working state.

[0032] The first gap 208 is rectangular, and the second gap 209 is also rectangular, and the rectangular width of the second gap 209 is equal to that of the first gap 208, which is beneficial to guarantee the structural stability of the automatic focusing anti-collision mechanism 2 and is convenient for installation and maintenance.

[0033] The first connecting shaft 203 is a pin shaft, and the second connecting shaft 206 is a pin shaft with the same size as the first connecting shaft 203, and the length direction of the first connecting shaft 203 passes through the width direction of the first gap 208; the length direction of the second connecting shaft 206 passes through the width direction of the second gap 209, which can guarantee that the pull ring at the upper end of the pull spring 2041 is sleeved on the first connecting shaft 203 and is inside the first gap 208, and the annular structure arranged at the lower end of the connecting rod 2042 is connected to the second connecting shaft 206 and is inside the second gap 209, thereby guaranteeing the structural rationality of the automatic focusing anti-collision mechanism 2.

[0034] The diameter of the cylindrical structure of the connecting rod 2042 is smaller than the diameter of the through hole 20431 at the central position of the end surface of the anti-collision pad 2043 and is also smaller than the diameter of the through hole arranged at the central position of the lower end surface of the first gap 208 and the central position of the upper end surface of the second gap, so that the connecting rod 2042 can smoothly pass through the through hole 20431.

[0035] The displacement sensor 207 is fixedly installed at the lower end of the second receiving block 205, and this arrangement is used for the focusing function of the utility model.

[0036] Specific working principle:

[0037] As shown, in normal operation, the workpiece 3 moves from right to left on the conveying belt 4, and when the photoelectric switch 108 senses the workpiece 3, the conveying belt 4 stops moving. At this time, the slider 106 moves downward along the guide rail of the linear actuator 103, and the straight-angle connecting seat 105 fixedly connected to the front side of the slider 106, the laser emitting system 104 on the lower side of the straight-angle connecting seat 105, the marking head 107 on the left side of the laser emitting system 104, the automatic focusing anti-collision mechanism 2 fixedly connected to the straight-angle connecting seat 105 through the connecting plate 201, and the displacement sensor 207 installed at the lower end of the automatic focusing anti-collision mechanism 2 all move downward with the slider 106. The control system reads the value of the displacement sensor 207 in real time, and when the displacement sensor 207 reaches the set focal length value, the slider 106 stops moving downward. The laser marking machine 1 completes marking through the marking head 107, and then the slider 106 retreats and moves upward to the position before marking. The movement timing of each component in the above process is controlled by the control system of the laser marking machine 1, which is not described in detail. During the marking process, if the workpiece 3 collides with the automatic focusing anti-collision mechanism 2 due to uneven surface of the workpiece 3, too large workpiece 3, or too fast conveying belt 4, at this time, the tension spring 2041 arranged in the automatic focusing anti-collision mechanism 2 is stretched and deformed, the connecting rod 2042 moves in the through-hole 20431 of the anti-collision pad 2043, the pull ring at the upper end of the tension spring 2041 is displaced on the shaft body of the first connecting shaft 203, the ring structure arranged at the lower end of the connecting rod 2042 is displaced on the shaft body of the second connecting shaft 206, and the first receiving block 202 and the second receiving block 205 change from the original adhering state to the separated state, so that the automatic focusing anti-collision mechanism 2 is prevented from being damaged due to collision.

Claims

1. An anti-collision device of an automatic focusing laser marking machine, comprising a laser marking machine (1), a workpiece (3), and a conveying belt (4), wherein the workpiece (3) is located on the upper side of the conveying belt (4), and the conveying belt (4) is arranged on the front side of the laser marking machine (1) near the lower end position; characterized in that: The laser marking machine (1) is fixedly connected with the automatic focusing anti-collision mechanism (2) through the connecting plate (201), and the automatic focusing anti-collision mechanism (2) comprises a first receiving block (202), a second receiving block (205) and an anti-collision assembly (204); The upper end surface of the first receiving block (202) is fixedly connected to the lower side of one end of the connecting plate (201), the first receiving block (202) is internally provided with a first notch (208), the first notch (208) is provided with a first connecting shaft (203) therein, the second receiving block (205) is internally provided with a second notch (209), the second notch (209) is provided with a second connecting shaft (206) at the lower end thereof, and the central position of the lower end surface of the first notch (208) and the central position of the upper end surface of the second notch (209) are both provided with through holes; The anti-collision assembly (204) comprises a tension spring (2041), a connecting rod (2042) and two anti-collision pads (2043) which are the same in structure and size, the two anti-collision pads (2043) are both in cylindrical structure and are provided with a through hole (20431) at the central position of the end surface thereof, the connecting rod (2042) is in cylindrical structure and is provided with an annular structure at the upper end and the lower end thereof, the connecting rod (2042) passes through the through hole provided at the central position of the lower end surface of the first notch (208), the through hole (20431) at the central position of the end surface of the two anti-collision pads (2043) and the through hole provided at the central position of the upper end surface of the second notch (209) in sequence from top to bottom, on the end surface of the anti-collision pad, the upper side and the lower side of the through hole (20431) are symmetrically provided with a magnetic block (20432) and an installation hole (20433), respectively, the upper end of the tension spring (2041) is sleeved on the first connecting shaft (203), the lower end of the tension spring (2041) is sleeved on the annular structure provided at the upper end of the connecting rod (2042), the annular structure provided at the lower end of the connecting rod (2042) is sleeved on the second connecting shaft (206), one of the anti-collision pads (2043) is fixedly installed on the lower end surface of the first receiving block (202) through the installation hole (20433) provided on the end surface of the anti-collision pad (2043) by means of bolts, the other anti-collision pad (2043) is fixedly installed on the upper end surface of the second receiving block (205) through the installation hole (20433) provided on the end surface thereof by means of bolts, and the upper and lower end surfaces of the two anti-collision pads (2043) are tightly overlapped.

2. The anti-collision device of an auto-focusing laser marking machine according to claim 1, characterized in that: The utility model provides a laser marking machine (1), including workbench (101), the upper rear side of workbench (101) is provided with pedestal (102), the upper side fixed connection of pedestal (102) has linear actuator (103), the left side surface of linear actuator (103) lower extreme installs photoelectric switch (108), and linear actuator (103) includes the slider (106) of setting in its front side, slider (106) can move up and down along the guide rail of linear actuator (103) both sides, slider (106) front side fixed mounting has right angle connecting seat (105), right angle connecting seat (105) includes mutually perpendicular vertical one side and horizontal one side, wherein the lower side fixed mounting of horizontal one side has laser emission system (104), and laser emission system (104) left side installation connection has marking head (107).

3. The anti-collision device of an auto-focusing laser marking machine according to claim 1, characterized in that: The anti-collision pads (2043) are made of rubber material, the diameter of the anti-collision pads (2043) is greater than or equal to the width of the first receiving block (202) and also greater than or equal to the width of the second receiving block (205), the surface of the magnetic blocks (20432) embedded on the anti-collision pads (2043) is flush with the surface of the anti-collision pads (2043), and the positions of the magnetic blocks (20432) embedded on the two anti-collision pads (2043) correspond to each other.

4. The anti-collision device of an auto-focusing laser marking machine according to claim 1, characterized in that: The magnetic blocks (20432) are neodymium-iron-boron magnets.

5. The anti-collision device of an auto-focusing laser marking machine according to claim 1, characterized in that: The first notch (208) is rectangular, and the second notch (209) is also rectangular, and the width of the rectangular shape of the second notch (209) is equal to the width of the rectangular shape of the first notch (208).

6. The anti-collision device of an auto-focusing laser marking machine according to claim 1, characterized in that: The first connecting shaft (203) is a pin shaft, and the second connecting shaft (206) is the same pin shaft as the first connecting shaft (203), the length direction of the first connecting shaft (203) passes through the width direction of the first notch (208), and the length direction of the second connecting shaft (206) passes through the width direction of the second notch (209).

7. The anti-collision device of an auto-focusing laser marking machine according to claim 1, characterized in that: The diameter of the cylindrical structure of the connecting rod (2042) is smaller than the diameter of the through hole (20431) at the central position of the end surface of the anti-collision pad (2043), and also smaller than the diameter of the through hole provided at the central position of the lower end surface of the first notch (208) and the central position of the upper end surface of the second notch (209).

8. The anti-collision device of an auto-focusing laser marking machine according to claim 1, characterized in that: The displacement sensor (207) is fixedly installed at the lower end of the second receiving block (205).

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