Lathe bed structure of laser pipe cutting machine

Abstract

The utility model discloses a lathe bed structure of a laser pipe cutting machine. The lathe bed structure comprises a lathe bed frame and a multi-point servo positioning device connected with the lathe bed frame. The multi-point servo positioning device comprises a servo driving piece, a transmission assembly and a carrier roller assembly. The transmission assemblies and the carrier roller assemblies are arranged in a one-to-one correspondence mode, the number of the servo driving piece is one, and the transmission assemblies are in transmission fit with the servo driving piece. The transmission assembly has a first state in transmission fit with the carrier roller assembly and a second state separated from the carrier roller assembly. In the first state, at least one or more than two carrier roller assemblies can be driven by the servo driving part to synchronously move relative to the lathe bed frame in the vertical direction. The multi-point servo positioning device is arranged to assist feeding and discharging, so that the situation that the machining precision is affected by shaking of the pipe fitting during rotation due to the fact that the center of the pipe fitting deviates from the rotation center of the chuck due to deformation of the pipe fitting during long-span arrangement and supporting due to the self weight is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of laser tube cutting machines, in particular to a bed structure of a laser tube cutting machine. Background Art

[0002] The common laser tube cutting machines in the industry usually use two chucks to clamp the profiles to be cut, and some use a three-chuck layout. In the cutting of slender tubes and heavy tubes, due to structural limitations, the drooping deformation of the tube and the deformation of the tube's own precision make it impossible to meet the cutting precision requirements. In addition, the three chucks need to frequently transfer the workpiece when cutting and clamping, which greatly affects the loading and unloading efficiency and the whole machine processing cycle. Although the four chucks can take into account the loading and unloading efficiency and cutting accuracy, there are still problems with low precision and small load-bearing capacity for the clamping and feeding of longer tubes.

[0003] Moreover, the bed of a conventional laser tube cutting machine usually adopts an open structure. During the tube processing, the debris, residue, smoke, and cut tails and short materials are easy to fall into the bed, which may affect the safe operation of the equipment. In the prior art, a flat cover is also provided on the upper part of the bed, but it is not convenient for loading and unloading long and heavy tubes / finished parts.

[0004] This shows that the prior art still has certain defects. Utility Model Content

[0005] The utility model aims to provide a bed structure of a laser tube cutting machine to solve the problem.

[0006] To achieve the above-mentioned purpose, the utility model provides a bed structure of a laser tube cutting machine, comprising a bed frame and a multi-point servo positioning device connected to the bed frame; perpendicular to the bed axis, the height of the two side edges of the bed frame has a height difference Δ H, a bed cover is provided on the upper part of the bed frame, and at least a part of the bed cover is arranged to be inclined in a direction parallel to the axial section of the bed, and the bed cover is also provided with a plurality of material unloading support rollers, which are arranged at intervals along the axial direction of the bed and the axial direction of the material unloading support rollers is perpendicular to the axial direction of the bed;

[0007] The multi-point servo positioning device includes a servo drive, a transmission assembly and a roller assembly; the transmission assembly and the roller assembly are provided with multiple groups and are arranged one by one, the servo drive is provided with one, and multiple groups of the transmission assembly are in transmission cooperation with the servo drive; the bed cover is provided with an opening for the roller assembly to pass through;

[0008] The transmission assembly has a first state in which it is in transmission cooperation with the roller assembly and a second state in which it is disengaged from the roller assembly; in the first state, at least a portion of the roller assembly can be driven by the servo drive component to synchronously pass through the opening and move relative to the bed frame in the vertical direction.

[0009] As a preferred embodiment of the present application, the multi-point servo positioning device further comprises a main transmission member, and the main transmission member is respectively in transmission cooperation with the servo drive member and the transmission assembly.

[0010] As a preferred embodiment of the present application, the transmission assembly includes a bevel gear assembly, a trapezoidal lead screw and a transmission frame; the main transmission member is a transmission shaft, and the transmission shaft is installed on the transmission frame through a bearing; the bevel gear assembly includes a first gear and a second gear, the first gear is connected to the transmission shaft, the second gear is installed on the upper part of the transmission frame and connected to the trapezoidal lead screw, and the servo drive drives the trapezoidal lead screw to move in a vertical direction relative to the transmission frame through the transmission shaft and the first gear and the second gear.

[0011] As a preferred embodiment of the present application, the trapezoidal lead screw is provided with a connecting portion, and the roller assembly has a matching portion corresponding to the connecting portion, and the connecting portion can be detachably connected to the matching portion.

[0012] As a preferred embodiment of the present application, the roller assembly includes a mounting frame, a roller and a roller drive assembly arranged on the mounting frame, the roller drive assembly includes a horizontal drive component and a vertical drive component, the roller is connected to the horizontal drive component via the vertical drive component, the horizontal drive component can drive the vertical drive component and the roller to move in a horizontal direction relative to the mounting frame, and the vertical drive component can drive the roller to move in a vertical direction.

[0013] As a preferred embodiment of the present application, the transmission assembly further includes a monitoring assembly, and the monitoring assembly is capable of monitoring the height of the roller assembly.

[0014] As a preferred embodiment of the present application, the side of the bed frame is also provided with a bed side guard plate.

[0015] As a preferred embodiment of the present application, the bed frame adopts a split structure, including a plurality of bed segments; the plurality of bed segments are arranged in sequence along the axial direction of the bed, and two adjacent bed segments are detachably connected.

[0016] As a preferred embodiment of the present application, the bed cover plate includes a horizontal portion and an inclined portion connected to each other; the horizontal portion is detachably connected to the inclined portion; and the inclined portion is provided with the unloading support roller.

[0017] As a preferred embodiment of the present application, a plurality of limiting portions are arranged on one side of the horizontal portion close to the inclined portion in the vertical direction, and one end of the inclined portion close to the horizontal portion is connected to the limiting portion; along the vertical direction, the height difference between the uppermost limiting portion and the lowermost limiting portion is less than Δ H.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] 1. In the above scheme, by setting the bed cover, the debris, residue, smoke, cut tails, short materials, etc. that fall into the bed during the pipe processing are greatly reduced, which is conducive to ensuring the normal and safe operation of the equipment; at the same time, in the above scheme, the bed frame and the bed cover are both inclined, which is more convenient for unloading after pipe processing.

[0020] 2. In the above scheme, the bed cover plate includes a horizontal portion and an inclined portion, and one end of the inclined portion close to the horizontal portion can be connected to a plurality of matching portions with different vertical heights on the horizontal portion, so that the inclination angle of the inclined portion can be adjusted, thereby adapting to the needs of unloading pipes of different weights, and avoiding the excessive impact force generated when the pipes are unloaded to the receiving device due to the excessive inclination angle of the inclined portion during the unloading process of heavy weight pipes, resulting in collision and damage to the pipe itself and / or the receiving device; at the same time, by changing the matching state between the transmission assembly and the roller assembly, the number of rollers to be used can be flexibly selected, thereby improving equipment utilization and reducing energy consumption while ensuring that processing needs are met.

[0021] 3. In the above scheme, the servo positioning device can realize both unloading and auxiliary loading and provide auxiliary support for the pipe during the processing, so as to avoid the pipe from sinking and deforming due to its own weight when arranged and supported in a long span, causing the center of the pipe to seriously deviate from the rotation center of the chuck, and then causing the pipe to vibrate during rotation, affecting the processing accuracy, which is beneficial to improving the processing accuracy; and the multi-point servo positioning device in this application is used in conjunction with the inclined portion of the bed cover and the unloading support roller for unloading, compared with the transmission flip plate unloading method, the complex unloading and material connection actions (including material connection and flipping) are directly abandoned, and the machine itself structure is relied upon to unload smoothly, with stable structure, simple logic and extremely low cost, which greatly improves the stability of the equipment, reduces manufacturing costs and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 is a schematic diagram of the structure of a multi-point servo positioning device in an example;

[0024] Figure 2 It is a structural diagram of a bed frame in an example;

[0025] Figure 3 It is a schematic diagram of the structure of the transmission assembly and the roller assembly;

[0026] Figure 4 for Δ Schematic diagram of H.

[0027] List of parts and reference numerals:

[0028] 1 bed section, 11 bed side guard plate, 12 bed cover plate, 121 opening, 122 horizontal part, 123 inclined part, 13 unloading support roller;

[0029] 2 transmission assembly, 21 motor, 22 transmission shaft, 231 first gear, 232 second gear, 24 trapezoidal lead screw, 25 guide light axis, 26 transmission frame;

[0030] 3 roller assembly, 31 roller, 32 mounting frame, 33 vertical driving member;

[0031] 41 limit block, 42 ​​positioning stopper, 43 photoelectric induction switch, 44 induction sheet. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0033] It should be noted that many specific details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific implementation methods disclosed below.

[0034] In one example, referring to Figure 1-4As shown, the bed structure of the laser tube cutting machine in the present application includes a bed frame with a split structure and a multi-point servo positioning device connected to the bed frame. Among them, the bed frame includes a plurality of bed segments 1, and the plurality of bed segments 1 are arranged in sequence along the axial direction of the bed, and the adjacent two bed segments 1 are detachably connected; preferably, the bed frame is made of rectangular tubes welded together, and the two adjacent bed segments 1 are designed with push-pull top screw holes, and the splicing distance of the bed segments 1 can be fine-tuned by pushing and pulling screws. Perpendicular to the axial direction of the bed, there is a height difference between the heights of the two side edges of the bed frame. Δ H, a bed cover plate 12 is arranged on the upper part of the bed frame and at least a part of the bed cover plate 12 is arranged to be inclined in a direction parallel to the axial section of the bed, that is, at least a part of the bed cover plate 12 is an inclined surface, and a bed side guard plate 11 is also arranged on the side of the bed frame; the bed cover plate 12 is also provided with a plurality of material unloading support rollers 13, and the plurality of material unloading support rollers 13 are arranged at intervals along the axial direction of the bed and the axial direction of the material unloading support rollers 13 is perpendicular to the axial direction of the bed. The multi-point servo positioning device includes a servo drive, a transmission assembly 2 and a roller assembly 3; the transmission assembly 2 and the roller assembly 3 are each provided with multiple groups and are arranged one to one, the servo drive is provided with one, and multiple groups of transmission assemblies 2 are in transmission cooperation with the servo drive; the bed cover 12 is provided with an opening 121 for the roller assembly 3 to pass through; the transmission assembly 2 has a first state of transmission cooperation with the roller assembly 3 and a second state of mutual disengagement from the roller assembly 3; in the first state, at least a part of the roller assembly 3 can be driven by the servo drive and synchronously pass through the opening 121 in the vertical direction and move relative to the bed frame.

[0035] In the above scheme, the servo positioning device can realize both unloading and auxiliary loading and auxiliary support for the pipe during the processing, so as to avoid the deformation of the pipe due to its own weight when arranged and supported in a long span, causing the center of the pipe to seriously deviate from the rotation center of the chuck, and then causing the pipe to shake when rotating, affecting the processing accuracy, which is conducive to improving the processing accuracy; and the multi-point servo positioning device in this application is used in conjunction with the inclined portion 123 of the bed cover 12 and the unloading support roller 13 to unload the material. Compared with the transmission flip unloading method, the complicated unloading and receiving actions (including receiving and flipping) are directly abandoned, and the machine itself is relied on for smooth unloading, stable structure, simple logic, and extremely low cost, which greatly improves the stability of the equipment, reduces the manufacturing cost, and extends the service life of the equipment. And by changing the matching state between the transmission component 2 and the roller component 3, the number of rollers 31 used can be flexibly selected, and the equipment utilization rate is improved and energy consumption is reduced under the premise of ensuring that the processing needs are met.

[0036] At the same time, in the above scheme, the arrangement of the bed side guard plate 11 and the bed cover plate 12 improves the overall structural rigidity of the bed and effectively reduces the exposure of the internal functional components of the bed. At the same time, it also greatly reduces the debris, residues, smoke, and cut tails and short materials that fall into the bed during pipe processing, which is beneficial to ensure the normal and safe operation of the equipment.

[0037] In addition, in the above scheme, only one servo driver is used to control the servo positioning of the entire multi-point servo positioning device, which is more conducive to ensuring the synchronization of the movement of the roller assembly 3 compared to setting a drive for each roller assembly 3 separately.

[0038] Further, refer to Figure 2 As shown, the multi-point servo positioning device also includes a main transmission member, which is respectively matched with the servo drive member and the transmission assembly 2. As a preferred embodiment of the present application, the servo drive member adopts a motor 21, and the transmission assembly 2 includes a helical gear assembly, a trapezoidal screw 24 and a transmission frame 26. The main transmission member is a transmission shaft 22, and the transmission shaft 22 is installed on the transmission frame 26 through a bearing; the helical gear assembly includes a first gear 231 and a second gear 232, the first gear 231 is matched and connected with the transmission shaft 22, and the second gear 232 is installed on the upper part of the transmission frame 26 and matched and connected with the trapezoidal screw 24. The servo drive member drives the trapezoidal screw 24 to move relative to the transmission frame 26 in the vertical direction through the transmission shaft 22 and the first gear 231 and the second gear 232. The trapezoidal screw 24 is provided with a connecting portion, and the roller assembly 3 has a matching portion corresponding to the connecting portion, and the connecting portion can be detachably connected with the matching portion. The transmission assembly 2 and the roller assembly 3 are switched between the aforementioned first state and the second state by connecting or disengaging the connecting portion and the matching portion. It should be noted that the present application does not specifically limit the structure of the connecting portion and the matching portion and the matching method and structure therebetween, and the matching structure may adopt a block / slot matching structure or other more different configurations. Preferably, the transmission assembly 2 further includes a guide optical axis 25, and the stability of the roller assembly 3 moving in the vertical direction is ensured by the setting of the guide optical axis 25.

[0039] Continue to refer to Figure 3 As shown, the roller assembly 3 includes a mounting frame 32, a roller 31 disposed on the mounting frame 32, and a driving assembly of the roller 31. The driving assembly of the roller 31 includes a horizontal driving member and a vertical driving member. The roller 31 is connected to the horizontal driving member through the vertical driving member. The horizontal driving member can drive the vertical driving member and the roller 31 to move relative to the mounting frame 32 in the horizontal direction, and the vertical driving member can drive the roller 31 to move in the vertical direction. In a preferred example, both the horizontal driving member and the vertical driving member 33 are cylinders.

[0040] In a preferred example, referring to Figure 1 and Figure 4 As shown, the bed cover plate 12 includes a horizontal portion 122 and an inclined portion 123 that are connected to each other; the horizontal portion 122 and the inclined portion 123 are detachably connected; and the inclined portion 123 is provided with a material unloading support roller 13. The arrangement of the horizontal portion 122 facilitates the installation of other supporting devices / equipment of the pipe cutting machine on the bed. A plurality of limiting portions are arranged along the vertical direction on one side of the horizontal portion 122 close to the inclined portion 123, and one end of the inclined portion 123 close to the horizontal portion 122 is connected to the limiting portion; along the vertical direction, the height difference between the uppermost limiting portion and the lowermost limiting portion is less than Δ H. With this structure, the inclination angle of the inclined portion 123 can be adjusted, so as to meet the requirements of unloading pipes of different weights, and avoid the pipe itself and / or the receiving device from being damaged by collision due to excessive impact force generated when the pipe is unloaded to the receiving device due to the excessive inclination angle of the inclined portion 123 during the unloading process; at the same time, by changing the matching state between the transmission assembly 2 and the roller assembly 3, the number of rollers 31 to be used can be flexibly selected, thereby improving equipment utilization and reducing energy consumption while ensuring that processing needs are met.

[0041] As a preferred embodiment of the present application, the transmission assembly 2 in the present application further includes a monitoring assembly, which can monitor the height of the roller assembly 3. Figure 3 As shown, the monitoring assembly includes a limit block 41 arranged on the trapezoidal screw 24, a positioning block 42 arranged on the transmission frame 26 and capable of cooperating with the limit block 41, a photoelectric induction switch 43 arranged on the transmission frame 26, and a sensing sheet 44 following the roller assembly 3. In actual operation, according to the diameter of the pipe, the transmission shaft 22 is driven to rotate by the motor 21 and the reducer, and then the trapezoidal screw 24 is driven to move up and down by the helical gear set, and the positioning block 42 is contacted with the limit block 41, and the photoelectric induction switch 43 is used to sense the sensing sheet 44 to achieve the positioning of the roller 31, so as to ensure that the center of the pipe coincides with the center of the chuck, and achieve the purpose of servo positioning.

[0042] The technical solution protected by the present utility model is not limited to the above-mentioned embodiments. It should be pointed out that the combination of the technical solution of any embodiment with the technical solution of one or more other embodiments is within the protection scope of the present utility model. Although the present utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to it based on the present utility model. Therefore, these modifications or improvements made without departing from the spirit of the present utility model are within the scope of protection claimed by the present utility model.

Claims

1. A bed structure of a laser tube cutting machine, characterized in that: It includes a bed frame and a multi-point servo positioning device connected to the bed frame; The multi-point servo positioning device comprises a servo drive, a transmission assembly and a roller assembly; the transmission assembly and the roller assembly are provided with multiple groups and are arranged one by one, the servo drive is provided with one, and multiple groups of the transmission assembly are in transmission cooperation with the servo drive; The transmission assembly has a first state in which it is in transmission cooperation with the roller assembly and a second state in which it is disengaged from the roller assembly; in the first state, at least one or more than two of the roller assemblies can be driven by the servo drive component to move synchronously relative to the bed frame in the vertical direction.

2. The bed structure of the laser tube cutting machine according to claim 1, characterized in that: The multi-point servo positioning device also includes a main transmission member, which is respectively in transmission cooperation with the servo drive member and the transmission assembly.

3. The bed structure of the laser tube cutting machine according to claim 2, characterized in that: The transmission assembly includes a bevel gear assembly, a trapezoidal lead screw and a transmission frame; the main transmission member is a transmission shaft, and the transmission shaft is installed on the transmission frame through a bearing; the bevel gear assembly includes a first gear and a second gear, the first gear is connected to the transmission shaft, the second gear is installed on the upper part of the transmission frame and connected to the trapezoidal lead screw, and the servo drive member drives the trapezoidal lead screw to move relative to the transmission frame in a vertical direction through the transmission shaft and the first gear and the second gear.

4. The bed structure of the laser tube cutting machine according to claim 3, characterized in that: The trapezoidal lead screw is provided with a connecting portion, and the roller assembly has a matching portion corresponding to the connecting portion, and the connecting portion can be detachably connected to the matching portion.

5. The bed structure of the laser tube cutting machine according to claim 3, characterized in that: The roller assembly includes a mounting frame, a roller and a roller drive assembly arranged on the mounting frame, the roller drive assembly includes a horizontal drive component and a vertical drive component, the roller is connected to the horizontal drive component via the vertical drive component, the horizontal drive component can drive the vertical drive component and the roller to move in a horizontal direction relative to the mounting frame, and the vertical drive component can drive the roller to move in a vertical direction.

6. The bed structure of the laser tube cutting machine according to claim 2, characterized in that: The transmission assembly also includes a monitoring assembly, which is capable of monitoring the height of the roller assembly.

7. The bed structure of the laser tube cutting machine according to claim 1, characterized in that: Perpendicular to the bed axis, there is a height difference between the two sides of the bed frame. Δ H, a bed cover plate is arranged on the upper part of the bed frame and at least a part of the bed cover plate is arranged to be inclined in a direction parallel to the axial section of the bed, and the bed cover plate is also provided with a plurality of material unloading support rollers, and the plurality of material unloading support rollers are arranged at intervals along the axial direction of the bed and the axial direction of the material unloading support rollers is perpendicular to the axial direction of the bed; the bed cover plate is provided with an opening for the roller assembly to pass through; and a bed side guard plate is also arranged on the side of the bed frame.

8. The bed structure of the laser tube cutting machine according to claim 7, characterized in that: The bed frame adopts a split structure, including a plurality of bed segments; the plurality of bed segments are arranged in sequence along the axial direction of the bed, and two adjacent bed segments are detachably connected.

9. The bed structure of the laser tube cutting machine according to claim 7, characterized in that: The bed cover plate comprises a horizontal portion and an inclined portion which are connected to each other; the horizontal portion is detachably connected to the inclined portion; and the inclined portion is provided with the material unloading support roller.

10. The bed structure of the laser tube cutting machine according to claim 9, characterized in that: A plurality of limiting parts are arranged on one side of the horizontal part close to the inclined part in the vertical direction, and one end of the inclined part close to the horizontal part is connected to the limiting part; along the vertical direction, the height difference between the uppermost limiting part and the lowermost limiting part is less than Δ H.

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