Laser processing equipment

Abstract

The utility model discloses laser processing equipment which comprises a base, a driving mechanism, a transmission assembly, a tensioning mechanism and a laser head, the transmission assembly comprises a driving wheel, a driven wheel and a synchronous belt, the driving wheel is in transmission connection with the driving mechanism, and the synchronous belt is in transmission connection with the driving wheel and the driven wheel; the tensioning mechanism comprises a locking and releasing piece, a tensioning piece and an elastic piece. The tensioning piece is installed on the base and can slide relative to the base. The elastic piece is arranged between the tensioning piece and the base so as to apply elastic force to the tensioning piece; the locking and releasing piece is connected with the tensioning piece and the base so as to lock the tensioning piece and the base or release the tensioning piece and the base. The tensioning part acts on the synchronous belt so as to automatically tension the synchronous belt under the action of elastic force; the laser head is connected to the synchronous belt so as to be driven by the synchronous belt to move. By means of the scheme, it is guaranteed that power of the driving mechanism can be stably transmitted to the laser head, and normal operation and machining precision of laser machining equipment are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser processing technical field, especially a kind of laser processing equipment. BACKGROUND

[0002] Laser processing utilizes the high energy density and high-precision positioning characteristics of laser beam. Laser forms a highly concentrated beam after focusing, which is directly irradiated to the workpiece surface, and the cutting, marking, welding, engraving and other processing methods are realized through the interaction of laser and workpiece. The energy of laser can be absorbed by the workpiece surface or a certain specific area, so as to heat it to high temperature, resulting in local melting, evaporation or ablation, etc. Physical process, so as to realize the processing target.

[0003] In related technology, laser processing equipment often uses synchronous belt for transmission, the two ends of the synchronous belt are connected with driving wheel and driven wheel respectively, and the part of the synchronous belt between the driving wheel and the driven wheel is connected with the laser head for transmission. In this way, the driving wheel rotates under the driving action of the driving mechanism, and drives the laser head to translate through the synchronous belt, and the driven wheel rotates accordingly. However, the synchronous belt will be loose after long time use, and the transmission stability will decrease. When the driving mechanism drives the synchronous belt to reverse, the laser head will have delayed response and insufficient displacement accuracy. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of laser processing equipment, to ensure the transmission stability of synchronous belt.

[0005] To achieve the above purpose, the utility model provides a kind of laser processing equipment, comprising:

[0006] Base;

[0007] Driving mechanism;

[0008] Transmission assembly, comprising driving wheel, driven wheel and synchronous belt, the driving wheel is transmissionally connected to the driving mechanism, and the synchronous belt is transmissionally connected with the driving wheel and the driven wheel;

[0009] Tensioning mechanism, the tensioning mechanism comprises lock release part, tensioning part and elastic part, the tensioning part is installed on the base and can slide relative to the base; the elastic part is arranged between the tensioning part and the base to apply elastic force to the tensioning part; the lock release part is connected with the tensioning part and the base to lock the tensioning part and the base or release the tensioning part and the base; the tensioning part acts on the synchronous belt to automatically tension the synchronous belt under the action of the elastic force;

[0010] Laser head, connected to the synchronous belt, to move under the driving of the synchronous belt.

[0011] In some embodiments of the utility model, the tensioning piece is provided with a sliding hole, the base is provided with a connecting hole, the lock releasing piece is arranged in the sliding hole and the connecting hole to connect the tensioning piece and the base, and the sliding hole extends along the sliding direction of the tensioning piece.

[0012] In some embodiments of the utility model, the base is provided with a sliding groove, and the tensioning piece is provided with a sliding rail, and the sliding rail and the sliding groove are in sliding cooperation.

[0013] In some embodiments of the utility model, the sliding groove comprises a contact surface, the sliding rail comprises an abutting surface, the contact surface abuts against the abutting surface, the contact surface and the direction of the elasticity form an included angle, and the included angle is an acute angle.

[0014] In some embodiments of the utility model, the elastic piece is a compression spring, a spring, a torsional spring or a spring piece.

[0015] In some embodiments of the utility model, the base is a sliding rail base, the driving wheel and the driven wheel are connected to the sliding rail base, the inner side of the synchronous belt is connected to the driving wheel and the driven wheel, and the tensioning mechanism is pressed against the outer side of the synchronous belt.

[0016] In some embodiments of the utility model, the tensioning mechanism further comprises a rolling body, one end of the rolling body is rotationally connected to the tensioning piece, and the rolling body is pressed against the synchronous belt.

[0017] In some embodiments of the utility model, the base is a sliding rail base, the driving wheel is connected to the sliding rail base, and the driven wheel is mounted to the tensioning piece to drive the tensioning piece to move the driven wheel and tension the synchronous belt.

[0018] In some embodiments of the utility model, the base is a sliding base, the laser head is mounted to the sliding base to be connected to the synchronous belt, and the tensioning piece is fixedly connected to the synchronous belt.

[0019] In some embodiments of the utility model, the tensioning piece comprises a tensioning part and a clamping part connected to each other, the tensioning part is mounted to the sliding base and connected to the elastic piece, and the clamping part clamps the synchronous belt.

[0020] In some embodiments of the utility model, the synchronous belt is located on the first side of the sliding base, the tensioning part and the elastic piece are arranged on the second side of the sliding base, and the first side and the second side are two opposite sides of the sliding base.

[0021] In some embodiments of the utility model, the sliding base is provided with a fixed plate, and the two ends of the elastic piece abut against the fixed plate and the tensioning piece respectively.

[0022] In some embodiments of the utility model, the positioning column is arranged on the tensioning piece, and the elastic piece is sleeved on the positioning column.

[0023] The utility model discloses through above -mentioned scheme, through the drive mechanism drive driving wheel rotation, synchronous belt connects driving wheel and driven wheel, and laser head is connected with synchronous belt, makes synchronous belt can drive laser head to remove, wherein, the lock release spare of tensioning mechanism can be adjusted by human or automatically, realizes the locking and release of tensioning piece, when the lock release spare is in the release state, tensioning piece can realize automatic tensioning synchronous belt under the elastic force of elastic piece, then lock release spare adjusts to lock state to lock tensioning piece, thereby keep synchronous belt under the stable work of more ideal tension, effectively avoid the unstable transmission, skidding and other problems that cause synchronous belt to slack, ensure that the power of drive mechanism can stably be passed to laser head, guarantee the normal operation and processing accuracy of laser processing equipment, and, the tensioning mechanism is relied on the elasticity of elastic piece to realize in the self -adjusting tension degree process, need not human intervention, avoid the problem that human adjustment is easy to produce and the tensioning force is too big or too small, and the regulation accuracy is higher. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to the structure shown by these drawings.

[0025] Figure 1 The structure schematic diagram of an embodiment of the laser processing equipment provided by the utility model is shown in the drawing.

[0026] Figure 2 The structure schematic diagram of part of the laser processing equipment provided by the utility model is shown in the drawing.

[0027] Figure 3 The structure schematic diagram of part of the laser processing equipment provided by the utility model is shown in the drawing.

[0028] Figure 4 The Figure 3 The enlarged view of A in the drawing.

[0029] Figure 5 The structure schematic diagram of part of the laser processing equipment provided by the utility model is shown in the drawing.

[0030] Figure 6 The structure schematic diagram of part of the laser processing equipment provided by the utility model is shown in the drawing.

[0031] Figure 7 As Figure 6 Enlarged view at C;

[0032] Figure 8 Another view of the schematic diagram of part of the structure of the laser processing equipment provided by the utility model;

[0033] Figure 9 As Figure 8 Enlarged view at D.

[0034] Explanation of reference numerals:

[0035] 100, laser processing equipment; 10, base; 101, connecting hole; 102, sliding groove; 1021, contact surface; 103, positioning plate; 10a, sliding rail seat; 10b, sliding seat; 10b1, first side; 10b2, second side; 10b3, fixed plate; 10b4, guide hole; 11, seat body; 12, sliding piece; 20, driving mechanism; 30, transmission assembly; 31, driving wheel; 32, driven wheel; 33, synchronous belt; 40, tensioning mechanism; 41, lock releasing piece; 42, tensioning piece; 421, sliding hole; 422, sliding rail; 4221, abutting surface; 4222, sliding plate; 4223, support plate; 4224, connecting plate; 423, tensioning part; 424, clamping part; 425, positioning column; 43, elastic piece; 44, rolling body; 45, guide column; 50, laser head.

[0036] The realization, functional features and advantages of the utility model will be further described with reference to the accompanying drawings in combination with embodiments. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0039] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0040] Please refer to Figures 1 to 6 The utility model provides a kind of laser processing equipment 100, including base 10, drive mechanism 20, transmission assembly 30, tensioning mechanism 40 and laser head 50, transmission assembly 30 includes driving wheel 31, driven wheel 32 and synchronous belt 33, the driving wheel 31 is connected to the drive mechanism 20, the synchronous belt 33 is connected the driving wheel 31 with the driven wheel 32;The tensioning mechanism 40 includes lock release piece 41, tensioning piece 42 and elastic piece 43, the tensioning piece 42 is installed to the base 10 and can slide relative to the base 10;The elastic piece 43 is located between the tensioning piece 42 and the base 10, to give the tensioning piece 42 with elastic force;The lock release piece 41 is connected with the tensioning piece 42 and the base 10, to lock the tensioning piece 42 with the base 10, or release the tensioning piece 42 with the base 10;The tensioning piece 42 acts on the synchronous belt 33, to be able to automatically tension the synchronous belt under the action of the elastic force;Laser head 50 is connected to the synchronous belt 33, to be moved under the driving of the synchronous belt 33.

[0041] The utility model discloses through above-mentioned scheme, through drive mechanism 20 drive driving wheel 31 rotation, synchronous belt 33 connects driving wheel 31 and driven wheel 32, laser head 50 is connected with synchronous belt 33, make synchronous belt 33 can drive laser head 50 remove, wherein, the lock release piece 41 of tensioning mechanism 40 can be adjusted by artificial or automatically, realize the locking and release of tensioning piece 42, when the lock release piece 41 is in the release state, tensioning piece 42 can realize automatic tensioning synchronous belt 33 under the elastic force of elastic member 43, then lock release piece 41 adjustment to locking state to lock tensioning piece 42, thereby keep synchronous belt 33 under the stable work of more ideal tension, effectively avoid the transmission instability, skid of the problem such as relaxation of synchronous belt 33, ensure that the power of drive mechanism 20 can stably be transmitted to laser head 50, guarantee the normal operation and processing accuracy of laser processing equipment 100, and, tensioning mechanism 40 is relied on the elasticity of elastic member 43 to realize in the self-regulation tensioning degree process, need not human intervention, avoid the problem that the tensioning force of human adjustment is easy to produce too big or too small, and the regulation accuracy is higher.

[0042] The laser processing equipment 100 can be a laser engraving machine, a laser welding machine, a laser cutting machine, a laser engraving and cutting machine, etc.

[0043] In some embodiments, the laser head 40 can move along the X-axis direction and the Y-axis direction, the base 10, the drive mechanism 20, the transmission assembly 30 and the tensioning mechanism 40 can be elements in the X-axis driving component, or can be elements in the Y-axis driving component, or both the X-axis driving component and the Y-axis driving component can be provided with these elements, which is not limited herein. In some embodiments, the laser head 40 is connected with the synchronous belt in the X-axis driving component, the X-axis driving component is connected with the synchronous belt in the Y-axis driving component, and the X-axis and Y-axis movement of the laser head 40 is realized.

[0044] In Figure 1 Although the laser head 50 only embodies the seat body and the laser head body is not embodied, it can be understood that the laser head body is installed on the seat body, and the shape of the laser head body is not limited herein, which is mainly used for outputting laser to realize laser processing such as engraving, cutting and welding on workpieces.

[0045] The driving mechanism 20 can generally adopt a motor as a power source, which can be directly connected with the driving wheel 31, without limitation. The laser head 50 can be directly connected with the synchronous belt 33, which directly drives the laser head 50 to move, with small transmission error, or indirectly connected with the synchronous belt 33 through a connecting structure. In some embodiments of the utility model, the laser processing equipment 100 further comprises a sliding piece 12, one end of which is fixedly connected with the synchronous belt 33, and the other end is connected with the laser head 50. The spatial layout of the laser head 50 can be flexibly set according to the shape of the sliding piece 12, thereby facilitating the optimization of the spatial layout.

[0046] In some embodiments of the utility model, the driven wheel 32 and the driving wheel 31 are arranged in a first direction, the driving wheel 31 and the driven wheel 32 are both in a second direction, the tensioning mechanism 40 presses the synchronous belt 33 in a third direction to tension the synchronous belt 33, and the first direction, the second direction and the third direction are perpendicular to each other. In this way, the distribution of each component of the equipment in space is more reasonable. The driving wheel 31 and the driven wheel 32 are arranged in the first direction, which provides a sufficient stretching path for the synchronous belt 33, while avoiding the accumulation of components in the same position, effectively utilizing the lateral space of the equipment. It ensures that the driving wheel 31 and the driven wheel 32 do not interfere with the arrangement of components in other directions during transmission, which is conducive to the compact design of the overall structure of the equipment.

[0047] The specific structure of the locking and releasing piece 41 is various, which can be a bolt and nut assembly, by tightening the nut, the tensioning piece 42 can be tightly fixed on the base 10 to realize the locking function. The advantages of this mode are simple structure, low cost, convenient installation and disassembly; it can also be a wedge-shaped block, by pushing the wedge-shaped block to wedge into the gap between the tensioning piece 42 and the base 10, the friction force and extrusion force generated by the inclined surface of the wedge-shaped block can fix the tensioning piece 42 on the base 10; it can also be an electromagnetic locking device, which realizes the locking function by using electromagnetic force.

[0048] The structure of the tensioning piece 42 is various, which can be a wheel-shaped structure, a block-shaped structure, a hook-shaped structure, a clamping structure and the like, the elastic piece 43 can be a spring, an elastic rubber piece, a rubber band and the like, which has elastic or deformable characteristics, can generate different sizes of tensioning force according to needs, and can buffer and absorb the vibration and impact generated during transmission to a certain extent, further improving the stability and reliability of transmission. In some embodiments of the utility model, the elastic piece 43 is a compression spring, or a spring, or a torsional spring, or a spring sheet. It is set according to specific conditions, without limitation.

[0049] In some embodiments of the utility model, the tensioning piece 42 is provided with a sliding hole 421, the base 10 is provided with a connecting hole 101, the lock releasing piece 41 is arranged in the sliding hole 421 and the connecting hole 101 to connect the tensioning piece 42 and the base 10, and the sliding hole 421 extends along the sliding direction of the tensioning piece 42. The lock releasing piece 41 can effectively prevent the tensioning piece 42 from accidentally separating from the base 10, and ensure the connection stability of the tensioning mechanism 40. When it is necessary to adjust the tensioning degree of the synchronous belt 33, the operator can complete the tensioning degree adjustment by only loosening, moving the tensioning piece 42 and then fastening the lock releasing piece 41, which is beneficial to saving equipment maintenance and debugging time and improving work efficiency. Moreover, the tensioning piece 42 can be moved through the sliding hole 421, and can be fixed after adjustment.

[0050] In some embodiments of the utility model, the base 10 is provided with a sliding groove 102, the tensioning piece 42 is provided with a sliding rail 422, and the sliding rail 422 is in sliding cooperation with the sliding groove 102. The sliding rail 422 slides along the sliding groove 102, limits the moving direction of the tensioning piece 42, and makes the tensioning piece 42 only slide in the preset direction, so that deviation or shaking of the tensioning piece 42 in the sliding process is avoided, thereby ensuring that the tensioning piece 42 can accurately exert the tensioning force on the synchronous belt 33 and improving the tensioning precision and stability. The sliding rail 422 is embedded in the sliding groove 102, the contact surface 1021 between the two is increased, and the tensioning piece 42 can better bear the force generated when the synchronous belt 33 is tensioned and the vibration and impact in the equipment running process.

[0051] Further, in some embodiments of the utility model, the elastic piece 43 is a torsion spring, the base 10 is provided with two positioning plates 103, an installation shaft is connected between the two positioning plates 103, the torsion spring is sleeved on the installation shaft, and the two ends of the torsion spring are connected with the base 10 and the tensioning piece 42 respectively. In this way, assembly is convenient, and the structure is firm.

[0052] In some embodiments of the utility model, the sliding groove 102 includes a contact surface 1021, the slide rail 422 includes an abutting surface 4221, the contact surface 1021 abuts with the abutting surface 4221, the contact surface 1021 forms an included angle with the direction of elasticity, and the included angle is an acute angle. Specifically, it can be 1 °, 2 °, 3 °, 5 °, 8 °, 10 °, 12 °, 15 ° and the like, and is set according to the specific circumstances, so that the sliding block and the fixed block can form self-locking through static friction, and a relatively large force is required to make the sliding block move relative to the fixed frame, and the movement stability is better. Since the contact surface 1021 contacts the abutting surface 4221, when the tensioning piece 42 stops quickly, the structure can convert the impact force in the third direction into a component force along the slope direction, thereby mitigating the impact, reducing the impact on the contact surface 1021, and reducing the wear and damage risk caused by excessive impact force.

[0053] The tensioning mechanism 40 can abut against the inner side of the synchronous belt 33 or the outer side of the synchronous belt 33. In some embodiments of the utility model, the base 10 is a slide rail base 10a, the driving wheel 31 and the driven wheel 32 are connected to the slide rail base 10a, the inner side of the synchronous belt is connected with the driving wheel 31 and the driven wheel 32, and the tensioning mechanism 40 abuts against the outer side of the synchronous belt 33. The overall occupied space of the equipment is effectively saved, and the installation, debugging and maintenance of the equipment are also facilitated. The tensioning mechanism 40 extrudes the synchronous belt 33 inward, and the overall appearance structure of the transmission assembly 30 and the tensioning mechanism 40 does not change before and after the synchronous belt 33 is tensioned and adjusted, so that interference with other components during the tensioning and adjusting process is avoided, and the structural reliability is higher.

[0054] In some embodiments of the utility model, the tensioning mechanism 40 further includes a rolling body 44, the rolling body 44 is rotatably connected to one end of the tensioning piece 42, and the rolling body 44 abuts against the synchronous belt 33. The rolling body 44 reduces the friction between itself and the synchronous belt 33 by rolling, so that the synchronous belt 33 can move more smoothly in the tensioned state. The rolling body 44 can be a roller, a ball or the like structure, and the surface thereof usually has a certain hardness and smoothness to ensure good contact and stable abutting pressure with the synchronous belt 33. The rolling body 44 can abut against the inner side surface of the synchronous belt 33 or the outer surface of the synchronous belt 33, and will not affect the movement of the synchronous belt 33.

[0055] In some embodiments of the utility model, the tensioning piece 42 includes sliding plate 4222, support plate 4223 and two connecting plates 4224, the sliding plate 4222 is equipped with sliding hole 421, the sliding plate 4222 is connected to the base 10, the support plate 4223 is connected to one end of the sliding plate 4222, and is limited in the assembly groove, the connecting plate 4224 is connected to the opposite sides of the support plate 4223, and is spaced apart along the width direction of the synchronous belt 33, the shaft both ends of the rolling body 44 are rotatably connected to one side of two connecting plates 4224, and the connecting plate 4224 is equipped with slide rail 422 on opposite sides, and the opposite side of two positioning plates 103 is equipped with slide groove 102. Compact structure, the overall space occupation is small.

[0056] In some embodiments of the utility model, the base 10 is slide rail seat 10a, the driving wheel 31 is connected to the slide rail seat 10a, the driven wheel 32 is installed to the tensioning piece 42, so that the tensioning piece 42 drives the driven wheel 32 to move, and the synchronous belt 33 is tensioned. The tensioning mechanism 40 realizes tensioning to the synchronous belt 33 by the driven wheel 32, simplifies the complexity of the tensioning mechanism 40, is convenient for maintenance, and the synchronous belt 33 only changes in length during tensioning adjustment, and the width is basically unchanged, avoiding interference to the parts in the width direction of the synchronous belt 33. The tensioning piece 42 can be a sliding block, and the tensioning piece 42 is slidably installed on the slide rail seat 10a, under the action of the elastic element 43, the tensioning piece 42 can move away from the driving wheel 31, so that the driven wheel 32 tensioning synchronous belt 33.

[0057] In some embodiments of the utility model, the base 10 is slide seat 10b, the slide seat 10b can be connected with the synchronous belt 33, the laser head 50 is installed to the slide seat 10b to be connected to the synchronous belt 33, and the tensioning piece 42 is fixedly connected with the synchronous belt 33. The laser processing equipment 100 further includes seat body 11, and the driving wheel 31 and the driven wheel 32 are installed on the seat body 11, and the slide seat 10b is slidably connected to the seat body 11. The tensioning piece 42 is fixedly connected with the synchronous belt 33, can keep the tensioning state of the synchronous belt 33 in real time under the action of the elastic element 43, avoids the relaxation or slip of the synchronous belt 33. And, the tensioning mechanism 40 moves with the synchronous belt 33 and the sliding piece 12, and the three are relatively stationary, avoiding the wear problem existing in the relative motion of the tensioning mechanism 40 and the synchronous belt 33, which is beneficial to prolong the service life, and avoids the connection loosening or falling off between the tensioning mechanism 40 and the synchronous belt 33 during equipment operation.

[0058] In some embodiments of the utility model, the tensioning part 423 is installed on the sliding seat 10b and connected with the elastic member 43, and the clamping part 424 clamps the synchronous belt 33. The clamping part 424 contacts with the synchronous belt 33 in a clamping mode, which can ensure effective tensioning of the synchronous belt 33 while reducing damage to the surface of the synchronous belt 33 and prolonging the service life of the synchronous belt 33.

[0059] In some embodiments of the utility model, the synchronous belt 33 is located on the first side 10b1 of the sliding seat 10b, the tensioning part 423 and the elastic member 43 are arranged on the second side 10b2 of the sliding seat 10b, and the first side 10b1 and the second side 10b2 are opposite sides of the sliding seat 10b. Generally, the first side 10b1 of the sliding seat 10b is closer to the inner side of the whole machine, and the second side 10b2 is closer to the outer side of the whole machine. In this way, the tensioning part 423 is exposed on the outer side of the sliding seat 10b, and the operator can directly observe the movement of the component when adjusting, thereby facilitating control of the adjustment amount. Moreover, the tensioning member 42 is balanced on the two parts of the sliding seat 10b, and does not cause uneven stress on the sliding seat 10b to affect the smoothness of the sliding of the tensioning member 42.

[0060] In some embodiments of the utility model, the sliding seat 10b is provided with a fixed plate 10b3, and the two ends of the elastic member 43 abut against the fixed plate 10b3 and the tensioning member 42, respectively. The elastic member 43 can stably act on the tensioning member 42, thereby ensuring that the tensioning member 42 stably exerts a tensioning force on the synchronous belt 33, and the structure is simple and reliable.

[0061] Further, in some embodiments of the utility model, the tensioning part 423 is provided with a guide column 45, the fixed plate 10b3 is provided with a guide hole 10b4, and one end of the guide column 45 is in sliding fit with the guide hole 10b4. The elastic member 43 is a spring, which is sleeved on the guide column 45 and connected between the limiting plate and the tensioning part 423, so that the tensioning part 423 has a tendency to approach or move away from the fixed plate 10b3 along the extension direction of the guide column 45. In this way, the sliding stability of the tensioning member 42 is higher.

[0062] In order to further improve the adjustment reliability of the tensioning mechanism 40, in some embodiments of the utility model, the tensioning member 42 is provided with the positioning column 425, and the elastic member 43 is sleeved on the positioning column 425. In this way, the elastic member 43 can be prevented from being deviated after being stressed, and the structure is more reliable.

[0063] In some embodiments, the inner side of the synchronous belt 33 (i.e. the side in contact with the driving wheel and the driven wheel) can have a toothed section and a non-toothed section, the toothed section can be engaged with the driving wheel 31, and the non-toothed section can be wound around the driven wheel 32, the shape of the peripheral side surface of the driven wheel 32 is matched with the shape of the non-toothed section, so as to reduce the shaking and vibration of the synchronous belt 33, and ensure the transmission accuracy. During the movement of the synchronous belt 33, the toothed section is always wound around the driving wheel 31, and the non-toothed section is always wound around the driven wheel 32.

[0064] The above merely describes exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A laser processing apparatus characterized by comprising: The application relates to a laser head tensioning device, which comprises a base, a driving mechanism, a transmission assembly, a tensioning mechanism and a laser head. The transmission assembly comprises a driving wheel, a driven wheel and a synchronous belt. The tensioning mechanism comprises a lock releasing part, a tensioning part and an elastic part. The elastic part is arranged between the tensioning part and the base to apply elastic force to the tensioning part. The tensioning part is connected with the base through the lock releasing part. The tensioning part acts on the synchronous belt to automatically tension the synchronous belt under the action of the elastic force. The laser head is connected with the synchronous belt to move under the drive of the synchronous belt. The tensioning part is provided with a sliding hole, the base is provided with a connecting hole, and the lock releasing part is arranged in the sliding hole and the connecting hole to connect the tensioning part with the base.

2. The laser processing apparatus according to claim 1, wherein The base is provided with a sliding groove, and the tensioning part is provided with a sliding rail.

3. The laser processing apparatus according to claim 1, wherein The sliding rail is in sliding fit with the sliding groove.

4. The laser processing apparatus according to claim 3, wherein The sliding groove comprises a contact surface, the sliding rail comprises an abutting surface, the contact surface abuts against the abutting surface, the contact surface and the direction of the elastic force form an acute angle.

5. The laser processing apparatus according to claim 1, wherein The elastic part is a compression spring, a spring, a torsion spring or a spring sheet.

6. The laser processing apparatus according to any one of claims 1 to 5, wherein The base is a sliding rail base, the driving wheel and the driven wheel are connected with the sliding rail base, the inner side of the synchronous belt is connected with the driving wheel and the driven wheel, and the tensioning mechanism abuts against the outer side of the synchronous belt.

7. The laser processing apparatus according to claim 6, wherein The tensioning mechanism further comprises a rolling body, the rolling body is rotationally connected with one end of the tensioning part, and the rolling body abuts against the synchronous belt.

8. The laser processing apparatus according to any one of claims 1 to 5, wherein The base is a sliding rail base, the driving wheel is connected with the sliding rail base, and the driven wheel is arranged on the tensioning part to drive the driven wheel to move under the drive of the tensioning part.

9. The laser processing apparatus according to any one of claims 1 to 5, wherein The base is a sliding base, the laser head is arranged on the sliding base to be connected with the synchronous belt, and the tensioning part is fixedly connected with the synchronous belt.

10. The laser processing apparatus according to claim 9, wherein The tensioning part comprises a tensioning part and a clamping part, the tensioning part is arranged on the sliding base and connected with the elastic part, and the clamping part clamps the synchronous belt.

11. The laser processing apparatus according to claim 10, wherein The synchronous belt is arranged on the first side of the sliding base, the tensioning part and the elastic part are arranged on the second side of the sliding base, and the first side and the second side are two opposite sides of the sliding base.

12. The laser processing apparatus of claim 9, wherein The sliding base is provided with a fixed plate, and the two ends of the elastic part abut against the fixed plate and the tensioning part respectively. The tensioning part is provided with a positioning column, and the elastic part is sleeved on the positioning column.

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