CNC machining photovoltaic accessory cutting structure

Abstract

The utility model provides a CNC machining photovoltaic accessory cutting structure, and relates to the technical field of photovoltaic accessory production and machining, the CNC machining photovoltaic accessory cutting structure comprises a base and a two-dimensional adjustable positioning workbench, both sides of the two-dimensional adjustable positioning workbench are provided with material guiding seats, the base is provided with a cutting machine module, the cutting machine module comprises a Z-axis ball screw, a cutting power head and a floating connecting mechanism, and the Z-axis ball screw is provided with a Z-axis ball screw. The two-dimensional adjustable positioning workbench comprises a transverse adjusting unit and a longitudinal adjusting unit. The positioning device has the advantages that the two-dimensional adjustable positioning workbench is combined with the quick-change positioning block and the elastic clamping arm, so that high-precision positioning is achieved; the cutting machine module adopts a floating connecting mechanism to effectively absorb vibration and guarantee cutting stability, and is adaptive to accessories of multiple specifications through a quick-change positioning block and adjustable clamping force of an elastic clamping arm, so that the equipment universality is high, the enterprise cost is effectively reduced, and the high-precision and large-scale production requirements of the photovoltaic industry are met.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of production and processing of photovoltaic accessories, and particularly relates to a cutting structure for CNC processing of photovoltaic accessories. Background Art

[0002] The processing quality of photovoltaic accessories (such as connecting plates, angle codes, bolts, etc.) plays a key role in the stability and service life of photovoltaic systems. At present, there are significant deficiencies in the positioning accuracy of traditional CNC processing cutting equipment for photovoltaic accessories. Most existing positioning worktables adopt a single fixed positioning method, which is difficult to meet the precise positioning requirements of various specifications of photovoltaic accessories. Moreover, the clamping structure often lacks real-time monitoring and automatic adjustment functions for the clamping force, resulting in easy displacement of accessories during processing, large deviation in cutting dimension accuracy, and inability to meet the strict requirements of the photovoltaic industry for high-precision accessories.

[0003] In addition, the cutting stability and versatility of traditional cutting equipment are poor. The cutting machine module usually adopts a rigid connection and cannot effectively absorb vibration during cutting, resulting in poor cutting surface quality, serious tool wear, and shortened equipment service life. At the same time, the equipment is difficult to adapt to the processing of photovoltaic accessories with different shapes and materials, requires frequent replacement of tooling fixtures, has a long clamping time, low processing efficiency, increases the production cost of enterprises, and is difficult to meet the requirements of large-scale production in the photovoltaic industry.

[0004] It should be noted that the above content belongs to the technical cognition scope of the inventor. Due to the vast and complex technical content in this field, the above content of this application does not necessarily constitute the prior art. Summary of the Utility Model

[0005] The utility model provides a cutting structure for CNC processing of photovoltaic accessories to solve the technical problems existing in the above background art.

[0006] To achieve the above object, the technical solution provided by the present utility model is: a CNC machining photovoltaic accessory cutting structure, including a base and a two-dimensional adjustable positioning workbench. Guide seats are provided on both sides of the two-dimensional adjustable positioning workbench. A cutting machine module is arranged on the base. The cutting machine module includes a Z-axis ball screw, a cutting power head, and a floating connection mechanism. The two-dimensional adjustable positioning workbench includes a horizontal adjustment unit and a vertical adjustment unit. The horizontal adjustment unit includes a fixed base and an X-axis ball screw embedded in the fixed base. A bellows dust cover is installed on the X-axis ball screw. The vertical adjustment unit includes a sliding seat connected to the X-axis ball screw. A quick-change positioning block is provided on the sliding seat. A plurality of elastic clamping arms are symmetrically provided on both sides of the quick-change positioning block. The elastic clamping arm is composed of a sleeve, a compression spring, a pressing arm, an adjusting bolt, and a guiding column. A lifting seat and a mounting seat are further provided at the front end of the Z-axis ball screw. The lower end of the mounting seat is fixedly connected to the cutting power head. A limiting groove is opened on the lifting seat. A convex platform embedded in the limiting groove is provided at the rear end of the mounting seat. The floating connection mechanism includes a plurality of connecting arms with spherical plain bearings at both ends. The upper and lower ends of the connecting arm are respectively hinged to the lifting seat and the mounting seat through hinge fittings.

[0007] Further, the lower end of the quick-change positioning block forms a dovetail fit with the sliding seat and is fixedly connected by a locking screw. The guide seat and the quick-change positioning block are located on the same straight line.

[0008] Further, one end of the pressing arm is sleeved on the sleeve and the adjusting bolt, and a spherical rubber pressing head and a pressure sensor are embedded at the other end. The guiding column is embedded on one side of the pressing arm.

[0009] Further, the upper end of the sleeve is threadedly connected to the adjusting bolt. The compression spring is sleeved on the sleeve and abuts against the pressing arm at the upper end.

[0010] Further, the sliding seat is in a T shape. Positioning holes corresponding to the elastic clamping arms are opened on both sides of the sliding seat. The lower ends of the sleeve and the guiding column are both embedded in the positioning holes.

[0011] Further, one end of the output shaft of the cutting power head is connected with a cutting saw blade through a quick-change tool holder. The quick-change tool holder includes a hydraulic expansion chuck.

[0012] Beneficial effects:

[0013] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0014] The utility model is reasonably designed. By combining a two-dimensional adjustable positioning workbench with a quick-change positioning block and an elastic clamping arm, high-precision positioning is achieved. The cutting machine module adopts a floating connection mechanism to effectively absorb vibration, ensure stable cutting, and adapt to multiple specifications of accessories through the quick-change positioning block and the adjustable clamping force of the elastic clamping arm. The equipment has strong versatility, effectively reduces the enterprise cost, and meets the high-precision and large-scale production requirements of the photovoltaic industry.

[0015] It should be noted that the structures not introduced in the present utility model are the same as the prior art or can be implemented by the prior art since they do not involve the design key points and improvement directions of the present utility model, and will not be elaborated here. Brief Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the structure of the two-dimensional adjustable positioning workbench of the present utility model;

[0018] Figure 3 is a schematic diagram of the structure of the cutting machine module of the present utility model;

[0019] Figure 4 is an exploded schematic diagram of the partial structure of the cutting machine module of the present utility model;

[0020] Figure 5 is a schematic diagram of the structure of the longitudinal adjustment unit of the present utility model;

[0021] Figure 6 is a schematic diagram of the structure of the elastic clamping arm of the present utility model;

[0022] Figure 7 is a sectional view of the structure of the elastic clamping arm of the present utility model;

[0023] Figure 8 is an exploded schematic diagram of the floating connection mechanism of the present utility model.

[0024] Reference Signs:

[0025] 1. Base; 2. Feeding base; 3. Cutting machine module; 301. Z-axis ball screw; 302. Cutting power head; 303. Floating connection mechanism; 3031. Connecting arm; 3032. Hinge fitting; 304. Lifting seat; 3041. Limit groove; 305. Mounting seat; 3051. Boss; 306. Quick-change tool holder; 307. Cutting saw blade; 4. Transverse adjustment unit; 401. Fixed base; 402. X-axis ball screw; 403. Bellows dust cover; 5. Longitudinal adjustment unit; 501. Sliding seat; 502. Quick-change positioning block; 503. Elastic clamping arm; 5031. Sleeve; 5032. Compression spring; 5033. Pressing arm; 5034. Adjusting bolt; 5035. Guide column; 5036. Spherical rubber pressing head; 5037. Pressure sensor. Detailed implementation manners

[0026] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0029] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", "provided with", "arranged on" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0030] Referring to the attached Figure 1-8 , a cutting structure for CNC machining of photovoltaic accessories, comprising a base 1 and a two-dimensional adjustable positioning workbench. Guide seats 2 are provided on both sides of the two-dimensional adjustable positioning workbench. A cutting machine module 3 is arranged on the base 1. The cutting machine module 3 includes a Z-axis ball screw 301, a cutting power head 302, and a floating connection mechanism 303. The two-dimensional adjustable positioning workbench includes a horizontal adjustment unit 4 and a vertical adjustment unit 5. The horizontal adjustment unit 4 includes a fixed base 401 and an X-axis ball screw 402 embedded in the fixed base 401. A bellows dust cover 403 is installed on the X-axis ball screw 402. The vertical adjustment unit 5 includes a sliding seat 501 connected to the X-axis ball screw 402. A quick-change positioning block 502 is arranged on the sliding seat 501. A plurality of elastic clamping arms 503 are symmetrically arranged on both sides of the quick-change positioning block 502. The elastic clamping arm 503 is composed of a sleeve 5031, a compression spring 5032, a pressing arm 5033, an adjusting bolt 5034, and a guiding column 5035.

[0031] The cutting machine module 3 includes a Z-axis ball screw 301, a cutting power head 302, and a floating connection mechanism 303. The Z-axis ball screw 301 is fixedly installed on the base 1 through bearing seats at both ends. The bearing seats adopt high-precision angular contact ball bearings, which can bear large axial and radial loads to ensure the stable rotation of the Z-axis ball screw 301. The front end of the Z-axis ball screw 301 is connected to a lifting seat 304 and a mounting seat 305. Driven by a servo motor, the cutting power head 302 can achieve precise lifting movement in the vertical direction (Z-axis direction), and the movement accuracy can reach ±0.005 mm.

[0032] The lower end of the mounting seat 305 is fixedly connected to the cutting power head 302 through bolts. The bolts adopt high-strength socket head cap screws and are equipped with lock washers to ensure the reliability of the connection. A limit groove 3041 is opened on the lifting seat 304. A boss 3051 embedded in the limit groove 3041 is provided at the rear end of the mounting seat 305. The boss 3051 and the limit groove 3041 form a sliding fit, which plays a role of limiting and guiding the mounting seat 305 while ensuring that the mounting seat 305 can move up and down with the Z-axis ball screw 301, and preventing it from shifting during the movement process.

[0033] The floating connection mechanism 303 includes a plurality of connecting arms 3031 with spherical plain bearings at both ends. The connecting arms 3031 are forged from high-quality alloy steel, having high strength and toughness. Both the upper and lower ends of the connecting arms 3031 are hinged to the lifting seat 304 and the mounting seat 305 through hinge fittings 3032. The hinge fittings 3032 include a pin shaft and a spherical plain bearing housing. The spherical plain bearing allows the connecting arm 3031 to swing freely within a certain range. When the cutting saw blade 307 encounters high-frequency vibration, the swing freedom can convert the radial vibration into a small amount of rotation of the spherical plain bearing, rather than rigidly transmitting it to the workpiece. Therefore, it is necessary to use a hinged structure in cooperation with the spherical plain bearing to change the vibration transmission path through the swingable hinge joint, absorb the vibration energy, reduce the vibration transmission while ensuring the cutting accuracy, and withstand the impact and convert and absorb the vibration energy through the deformation energy of the high-toughness material of the connecting arm 3031, and cooperate with the damping characteristics of the spherical plain bearing to reduce the vibration amplitude. This floating connection method can effectively absorb the vibration and impact force generated during the cutting process, prevent the vibration from being transmitted to the cutting power head 302 and the workpiece, thereby improving the cutting accuracy and surface quality, reducing tool wear, and extending the service life of the equipment.

[0034] One end of the output shaft of the cutting power head 302 is connected with a cutting saw blade 307 through a quick-change tool holder 306. The quick-change tool holder 306 uses a hydraulically expandable chuck. There is a hydraulic chamber inside the chuck. When the hydraulic system injects pressure oil, the chuck will expand uniformly and tightly hold the tool shank of the cutting saw blade 307, achieving a high-precision and high-rigidity connection. The radial runout accuracy of the chuck is ≤0.003 mm, ensuring the stability of the cutting saw blade 307 during high-speed rotation, improving the dimensional accuracy and surface finish of the cutting. The cutting power head 302 is driven by a high-performance variable-frequency motor, and the rotation speed of the cutting saw blade 307 can be accurately adjusted according to different cutting materials and process requirements, and the rotation speed range is 5000 - 15000 rpm.

[0035] The horizontal adjustment unit 4 includes a fixed base 401 and an X-axis ball screw 402 embedded in the fixed base 401. The fixed base 401 is made of cast aluminum alloy, which is characterized by light weight and high strength. It is internally processed with high-precision mounting grooves for installing the X-axis ball screw 402. The X-axis ball screw 402 is fixed in the fixed base 401 through bearing seats at both ends. The bearing seats also adopt high-precision angular contact ball bearings to ensure the smooth operation of the X-axis ball screw 402. An accordion dust cover 403 is installed on the X-axis ball screw 402. The accordion dust cover 403 is made of high-strength PVC material, which can effectively prevent dust, chips and other debris from entering the ball screw drive mechanism, protect the screw and nut, extend their service life, and at the same time ensure that the movement accuracy of the X-axis ball screw 402 is not affected. By driving the X-axis ball screw 402 to rotate with a servo motor, the precise movement of the two-dimensional adjustable positioning table in the horizontal direction (X-axis direction) can be realized, and the movement accuracy can reach ±0.01mm.

[0036] The vertical adjustment unit 5 includes a sliding seat 501 connected to the X-axis ball screw 402. The sliding seat 501 is T-shaped, and its bottom is processed with mounting holes matching the nut seat of the X-axis ball screw 402. The sliding seat 501 is fixedly connected to the nut seat through bolts, so that the sliding seat 501 can move along the X-axis direction as the X-axis ball screw 402 rotates. Positioning holes corresponding to the elastic clamping arms 503 are provided on both sides of the sliding seat 501. The size and position of the positioning holes are precisely processed to ensure the accurate installation and positioning of the elastic clamping arms 503.

[0037] A quick-change positioning block 502 is provided on the sliding seat 501. The lower end of the quick-change positioning block 502 forms a dovetail-type fit with the sliding seat 501. The dovetail-type fit has good guiding and stability, which can ensure the accurate alignment of the quick-change positioning block 502 during installation and disassembly, and will not loosen and displace during the processing. The quick-change positioning block 502 is fixedly connected to the sliding seat 501 through locking screws. Operators can quickly replace different types of quick-change positioning blocks 502 according to the shapes and sizes of different photovoltaic accessories to achieve the positioning of various specifications of accessories, improve the versatility and processing efficiency of the equipment. The material guide seat 2 and the quick-change positioning block 502 are located on the same straight line. During the feeding process of the photovoltaic accessories, the material guide seat 2 can guide the accessories to be accurately placed on the quick-change positioning block 502 to ensure the positioning accuracy of the accessories.

[0038] On both sides of the quick-change positioning block 502, a plurality of elastic clamping arms 503 are symmetrically arranged. The elastic clamping arm 503 is composed of a sleeve 5031, a compression spring 5032, a pressing arm 5033, an adjusting bolt 5034 and a guiding column 5035. The upper end of the sleeve 5031 is threadedly connected to the adjusting bolt 5034. The adjusting bolt 5034 can adjust the height of the sleeve 5031 by rotation, so as to adjust the clamping force of the elastic clamping arm 503. The compression spring 5032 is sleeved on the sleeve 5031, and the upper end abuts against the pressing arm 5033. Under the action of the compression spring 5032, the pressing arm 5033 can generate a downward pressure to tightly clamp the photovoltaic accessory on the quick-change positioning block 502.

[0039] One end of the pressing arm 5033 is sleeved on the sleeve 5031 and the adjusting bolt 5034, and the other end is embedded with a spherical rubber pressing head 5036 and a pressure sensor 5037. One end of the measuring head of the pressure sensor 5037 passes through the pressing arm 5033 and is in contact connection with the spherical rubber pressing head 5036. The spherical rubber pressing head 5036 has good elasticity and wear resistance, and can provide sufficient clamping force without damaging the surface of the photovoltaic accessory. Moreover, the spherical design can make the pressure distribution more uniform. The pressure sensor 5037 can real-time monitor the clamping force of the pressing arm 5033 on the accessory and feedback the signal to the control system. When the clamping force is too large or too small, the control system can issue an alarm or automatically adjust the adjusting bolt 5034 to ensure that the clamping force is within a suitable range, ensuring the stability and safety of the accessory during the processing. The guiding column 5035 is embedded on one side of the pressing arm 5033. The guiding column 5035 and the guiding hole on the pressing arm 5033 form a sliding fit, playing a guiding role in the movement of the pressing arm 5033, preventing the pressing arm 5033 from tilting and shifting during the clamping process, and ensuring the accuracy of the direction of the clamping force. The lower ends of the sleeve 5031 and the guiding column 5035 are both embedded in the positioning holes of the sliding seat 501. Through the positioning and fixing of the positioning holes, the stability and reliability of the elastic clamping arm 503 during the working process are ensured.

[0040] In this embodiment, through the lateral adjustment unit 4 and the longitudinal adjustment unit 5 of the two-dimensional adjustable positioning workbench, precise adjustment and positioning of photovoltaic accessories in the X-axis and Z-axis directions can be achieved. Combined with the quick replacement of the quick-change positioning block 502, it can meet the processing requirements of various specifications of accessories. The design of the elastic clamping arm 503 combined with the pressure sensor 5037 can monitor and adjust the clamping force in real time to ensure the stability of the accessories during processing. The positioning accuracy can reach ±0.01 mm. In the cutting machine module 3, the Z-axis ball screw 301 adopts a high-precision ball screw drive, combined with a high-performance servo motor drive, and the high-precision quick-change tool holder 306 (the radial runout accuracy of the chuck ≤0.003 mm) of the cutting power head 302 can achieve high-precision cutting of photovoltaic accessories. The processing dimension accuracy can reach ±0.005 mm, and the surface finish is high, meeting the high-precision requirements of the photovoltaic industry for accessories;

[0041] The setting of the floating connection mechanism 303 effectively absorbs the vibration and impact force during the cutting process, reduces the influence of vibration on the cutting quality and the equipment life, and ensures the stability of the cutting process. The protection of the X-axis ball screw 402 by the bellows dust cover 403 and the reasonable structural design reduce the failure rate of the equipment, improve the reliability and processing efficiency of the equipment. At the same time, the quick replacement function of the quick-change positioning block 502 shortens the clamping time of the accessories and further improves the processing efficiency, meeting the requirements of large-scale production;

[0042] The design of the quick-change positioning block 502 enables the equipment to quickly switch different types of positioning methods and adapt to the processing of photovoltaic accessories of various shapes and sizes, such as connecting plates, angle codes, bolts, etc. The adjustable clamping force function of the elastic clamping arm 503 and the real-time feedback of the pressure sensor 5037 can ensure the stable clamping of accessories of different materials and thicknesses, improve the versatility and adaptability of the equipment, and reduce the equipment investment cost and production management difficulty of the enterprise.

[0043] The above-described embodiments only represent certain implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A CNC processing photovoltaic parts cutting structure, characterized by: The invention comprises a base (1) and a two-dimensionally adjustable positioning workbench, wherein a material guide seat (2) is arranged on both sides of the two-dimensionally adjustable positioning workbench, a cutting machine module (3) is arranged on the base (1), and the cutting machine module (3) comprises a Z-axis ball screw (301), a cutting power head (302) and a floating connection mechanism (303), the two-dimensionally adjustable positioning workbench comprises a lateral adjustment unit (4) and a longitudinal adjustment unit (5), the lateral adjustment unit (4) comprises a fixed base (401) and an X-axis ball screw (402) embedded in the fixed base (401), an accordion dust cover (403) is installed on the X-axis ball screw (402), and the longitudinal adjustment unit (5) comprises a sliding seat (501) connected to the X-axis ball screw (402), a quick-change positioning block (502) is arranged on the sliding seat (501), and the quick-change positioning block (502) has two sides. A plurality of elastic clamping arms (503) are provided, the elastic clamping arms (503) being composed of a sleeve (5031), a compression spring (5032), a pressure arm (5033), an adjusting bolt (5034) and a guide column (5035); a lifting seat (304) and a mounting seat (305) are further provided at the front end of the Z-axis ball screw (301); the lower end of the mounting seat (305) is fixedly connected to the cutting power head (302); a limiting groove (3041) is provided on the lifting seat (304); a boss (3051) is embedded in the limiting groove (3041) at the rear end of the mounting seat (305); the floating connection mechanism (303) comprises a plurality of connecting arms (3031) with joint bearings at both ends; the upper and lower ends of the connecting arms (3031) are both hinged to the lifting seat (304) and the mounting seat (305) through hinged fittings (3032).

2. A CNC processing photovoltaic parts cutting structure according to claim 1, characterized in that: The lower end of the quick-change positioning block (502) forms a dovetail fit with the sliding seat (501) and is fixedly connected by a locking screw. The material guide seat (2) and the quick-change positioning block (502) are located on the same straight line.

3. A CNC processing photovoltaic parts cutting structure according to claim 1, characterized in that: One end of the pressure arm (5033) is sleeved on the sleeve (5031) and the adjusting bolt (5034), and the other end is embedded with a spherical rubber pressure head (5036) and a pressure sensor (5037). The guide column (5035) is embedded on one side of the pressure arm (5033).

4. The CNC processing photovoltaic parts cutting structure according to claim 1, characterized in that: The upper end of the sleeve (5031) is threadedly connected to the adjusting bolt (5034); the compression spring (5032) is sleeved on the sleeve (5031), and the upper end thereof abuts against the pressure arm (5033).

5. The CNC processing photovoltaic parts cutting structure according to claim 1, characterized in that: The sliding seat (501) is T-shaped, and positioning holes corresponding to the elastic clamping arms (503) are provided on both sides of the sliding seat (501), and the lower ends of the sleeve (5031) and the guide column (5035) are both embedded in the positioning holes.

6. The CNC processing photovoltaic parts cutting structure according to claim 1, characterized in that: One end of the output shaft of the cutting power head (302) is connected to a cutting saw blade (307) via a quick-change tool handle (306), and the quick-change tool handle (306) comprises a hydraulic expansion chuck.

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