Capacitance head structure with built-in capacitance amplifier

Abstract

The utility model belongs to the field of laser cutting provides a kind of capacitor head structure with built-in capacitor amplifier, including laser head, pressing plate and capacitor head from top to bottom are sequentially arranged, still including capacitor amplifier and probe card, the capacitor amplifier is located capacitor head inside, capacitor head with the capacitor amplifier electricity is connected, the probe card is located pressing plate inside, the probe card with the capacitor amplifier and laser head electricity is connected, the capacitor signal of capacitor head is amplified after passing through capacitor amplifier and is transmitted to laser head by probe card. Through built-in capacitor amplifier, thereby improve capacitor head integration and solve the problem that signal transmission path is long and is easily disturbed in prior art.

Description

Technical Field

[0001] This application relates to the field of laser cutting, and more particularly to a capacitor head structure with a built-in capacitor amplifier. Background Technology

[0002] In today's industrial manufacturing sector, laser technology is gradually becoming an indispensable tool, especially in laser cutting, where its applications are becoming increasingly widespread. Currently, the most commonly used laser cutting technology in the industry is based on the principle of capacitance sensing. This technology detects the capacitance value between the surface of the metal workpiece and the metal nozzle at the bottom of the laser cutting head, thereby accurately measuring the height of the workpiece surface and adjusting the height of the laser cutting head accordingly to achieve efficient cutting operations.

[0003] Typically, a laser cutting head comprises a capacitor head and lenses. In existing technologies, the amplifier is usually placed outside the capacitor head to achieve capacitive sensing. This side-mounted design has several drawbacks. First, mounting the amplifier side-mounted significantly increases the overall size of the laser cutting head, limiting its operational flexibility in confined spaces and potentially leading to material waste. Second, the side-mounted amplifier requires an additional cable, increasing the complexity of the equipment and making the signal transmission susceptible to external interference, resulting in signal instability and consequently affecting cutting accuracy and processing quality.

[0004] Therefore, achieving a high degree of integration between the amplifier and the laser cutting head could largely solve the aforementioned problems. This integrated design can not only effectively reduce the size of the cutting head and improve its applicability in complex working conditions, but also avoid signal interference problems caused by additional cables, thereby significantly improving processing efficiency, saving material consumption, and reducing equipment operating costs, providing a more optimized solution for the further development and application of laser cutting technology. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a capacitor head structure with a built-in capacitor amplifier.

[0006] This application provides a capacitor head structure with a built-in capacitor amplifier, including a laser head, a pressure plate, and a capacitor head arranged sequentially from top to bottom. The capacitor head structure also includes a capacitor amplifier and a probe plate. The capacitor amplifier is located inside the capacitor head and is electrically connected to the capacitor head. The probe plate is located inside the pressure plate and is electrically connected to the capacitor amplifier and the laser head. The capacitance signal of the capacitor head is amplified by the capacitor amplifier and then transmitted to the laser head through the probe plate.

[0007] In some embodiments, the capacitor head includes a nozzle and a mounting base, the mounting base having a mounting groove, and the capacitor amplifier being located within the mounting groove.

[0008] In some embodiments, the mounting base has a through hole in the center, the through hole is coaxial with the mouth, the mounting groove is set in an annular shape with the through hole as the center, the width of the annular shape of the mounting groove is D1, the capacitor amplifier is also set in an annular shape, the width of the annular shape of the capacitor amplifier is D2, D2 < D1 * 0.8.

[0009] In some embodiments, the mounting groove is provided with a limiting part that can fill a portion of the annular mounting groove. The capacitor amplifier is provided with a cut-off part, which is formed by hollowing out a portion of the annular capacitor amplifier. The cut-off part corresponds to the limiting part. The limiting part of the mounting groove corresponds to the cut-off part of the capacitor amplifier. When the capacitor amplifier is placed in the mounting groove, the left side of the limiting part abuts against the front end of the capacitor amplifier, or the right side of the limiting part abuts against the rear end of the capacitor amplifier. The left and right sides of the limiting part abut against the front and rear ends of the capacitor amplifier, respectively. This forms a positioning of the capacitor amplifier, thereby preventing excessive movement of the capacitor amplifier during actual use.

[0010] In some embodiments, the mounting slot includes a positioning slot, which is a groove added to the outer periphery of the annular structure of the mounting slot and communicates with the mounting slot. The capacitor amplifier has a protrusion, which is a structure that protrudes outward from the annular structure of the capacitor amplifier. When the capacitor amplifier is placed in the mounting slot, the positioning slot of the mounting slot and the protrusion of the amplifier engage with each other, thereby positioning the capacitor amplifier and preventing excessive movement of the capacitor amplifier during actual use.

[0011] In some embodiments, the left and right sides of the limiting portion are configured as inwardly concave curved surfaces, and the front and rear ends of the capacitor amplifier are configured as protruding semi-circular or semi-elliptical shapes. The concave curved surfaces on the left and right sides of the limiting portion can cooperate with the front and rear ends of the capacitor amplifier to assist in the positioning of the capacitor amplifier.

[0012] In some embodiments, the pressure plate is provided with a receiving groove, and the probe plate is located in the receiving groove.

[0013] In some embodiments, the receiving groove is located above the capacitor amplifier, the receiving groove has a lower through hole penetrating the bottom surface of the pressure plate, the bottom surface of the probe plate has an upper connecting part, the top surface of the capacitor amplifier has a lower connecting part, the upper connecting part is electrically connected to the lower connecting part through the lower through hole, or the lower connecting part is electrically connected to the upper connecting part through the lower through hole.

[0014] In some embodiments, the inner sidewall of the mounting groove is provided with a first hole and a first cable is provided therethrough. The first cable passes through the first hole to realize the electrical connection between the capacitor head and the capacitor amplifier. The receiving groove is provided with an upper through hole penetrating the top surface of the pressure plate. The top surface of the probe plate is provided with a lower connector and the bottom surface of the laser head is provided with an upper connector. The lower connector is electrically connected to the upper connector through the upper through hole, or the lower connector is electrically connected to the upper connector through the upper through hole.

[0015] In some embodiments, the probe plate is fixed to the wall of the receiving groove by screws, the pressure plate is fixed to the capacitor head by screws, and the capacitor head and the laser head are locked together by screws.

[0016] The beneficial effects that this application can achieve are:

[0017] 1. The capacitor amplifier is located inside the capacitor head, replacing the traditional side-mounted amplifier and improving the integration of the capacitor head structure.

[0018] 2. The capacitor amplifier is located inside the mounting base, which shortens the connection distance between the amplifier and the capacitor head, making the signal less susceptible to interference. Similarly, the position layout of the probe plate and its connection design with the amplifier and the laser head also shorten the connection distance and reduce the possibility of interference.

[0019] 3. By carefully designing the shape and structure of the mounting slot and cleverly planning the shape and structure of the capacitor amplifier, the capacitor amplifier is positioned, thereby avoiding excessive movement of the capacitor amplifier during actual use.

[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a capacitor head structure with a built-in capacitor amplifier according to this application is shown;

[0023] Figure 2 This invention provides a schematic diagram of a self-contained capacitor amplifier.

[0024] Figure 3 A schematic diagram of the structure of a pressure plate with a built-in capacitor amplifier according to this application is shown;

[0025] Explanation of main component symbols: 1-Capacitor head; 2-Capacitor amplifier; 3-Probe plate; 4-Laser head; 5-Pressure plate; 11-Nozzle; 12-Mounting base; 13-Mounting groove; 14-Limiting part; 21-Cut-off part; 51-Receiving groove. Detailed Implementation

[0026] The term "comprising" in the specification, claims, and accompanying drawings of this application is synonymous with "including," "containing," or "characterized in," and is inclusive of endpoints or open-ended, and does not exclude additional unstated elements or method steps. "Comprising" is a technical term used in the language of the claims, meaning that the stated element is present, but other elements may be added and still form a construction or method within the scope of the claims.

[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In this application, the term "about" means encompassing minute variations (at most + / - 10%) of the stated value.

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] This application provides a capacitor head 1 structure with a built-in capacitor amplifier 2, such as... Figure 1 As shown, the structure includes, from top to bottom, a laser head 4, a pressure plate 5, and a capacitor head 1. The capacitor head 1 also includes a capacitor amplifier 2 and a probe plate 3. The capacitor amplifier 2 is located inside the capacitor head 1 and is electrically connected to the capacitor head 1. The probe plate 3 is located inside the pressure plate 5 and is electrically connected to both the capacitor amplifier 2 and the laser head 4. The capacitance signal from the capacitor head 1 is amplified by the capacitor amplifier 2 and then transmitted to the laser head 4 through the probe plate 3. The pressure plate 5 can be used as a cover to protect the capacitor amplifier 2.

[0031] When powered on normally during use, there will be an initial capacitance value. As the workpiece to be cut gradually approaches the capacitor head 1 structure, the capacitance value will continuously change (it may decrease) until the laser head 4 contacts the workpiece and reaches a predetermined threshold (it may be 0). After calibration, the capacitance value can be used to determine the distance between the workpiece and the nozzle.

[0032] The capacitor head 1 includes a nozzle 11 and a mounting base 12. The mounting base 12 has a mounting groove 13, and the capacitor amplifier 2 is located in the mounting groove 13.

[0033] The mounting base 12 has a through hole in the center, which is coaxial with the nozzle 11. The mounting groove 13 can be centered on the through hole. The shape of the capacitor amplifier 2 can correspond to the mounting groove 13. In some embodiments, the mounting groove 13 can be configured as an annular, square, or strip-shaped, and correspondingly, the shape of the capacitor amplifier 2 is also configured to be an annular, square, or strip-shaped that can be accommodated in the mounting groove 13. Specifically, it is preferred that both the mounting groove 13 and the capacitor amplifier 2 are annular. The width of the annular shape of the mounting groove 13 is D1, and the width of the annular shape of the capacitor amplifier 2 is D2, where D2 < D1. Specifically, it is preferred that D2 < D1 * 0.8.

[0034] The mounting groove 13 is provided with a limiting part 14, which can fill a portion of the annular mounting groove 13. The limiting part 14 can be fixed in the mounting groove 13 by means of screws or the like, thereby partially filling the mounting groove 13. In some other embodiments, the mounting groove 13 and the limiting part 14 can be integrally formed by the mounting base 12. The capacitor amplifier 2 is provided with a cut-off part 21, which is formed by hollowing out a portion of the annular capacitor amplifier 2, and the cut-off part 21 corresponds to the limiting part 14. The limiting part 14 of the mounting groove 13 corresponds to the cut-off part 21 of the capacitor amplifier 2. When the capacitor amplifier 2 is placed in the mounting groove 13, the left side of the limiting part 14 abuts against the front end of the capacitor amplifier 2, or the right side of the limiting part 14 abuts against the rear end of the capacitor amplifier 2. The left and right sides of the limiting part 14 abut against the front end and rear end of the capacitor amplifier 2, respectively. This forms the positioning of the capacitor amplifier 2, thereby avoiding excessive movement of the capacitor amplifier 2 during actual use.

[0035] The left and right sides of the limiting part 14 are configured as inwardly concave curved surfaces. Specifically, they can be hemispherical curved surfaces. The front and rear ends of the capacitor amplifier 2 are configured as protruding semi-circular or semi-elliptical shapes. The concave curved surfaces on the left and right sides of the limiting part 14 can cooperate with the front and rear ends of the capacitor amplifier 2 to assist in the positioning of the capacitor amplifier 2. In some other embodiments, the left and right sides of the limiting part 14 are configured as other curved surfaces that can achieve the limiting effect, such as wave-shaped surfaces; similarly, the front and rear ends of the capacitor amplifier 2 can be configured as other shapes that can assist in positioning.

[0036] The pressure plate 5 is provided with a receiving groove 51, and the probe plate 3 is located in the receiving groove 51.

[0037] The receiving slot 51 is located above the capacitor amplifier 2. The receiving slot 51 has a lower through hole penetrating the bottom surface of the pressure plate 5. The bottom surface of the probe plate 3 has an upper connecting part, and the top surface of the capacitor amplifier 2 has a lower connecting part. The upper connecting part is electrically connected to the lower connecting part through the lower through hole, or the lower connecting part is electrically connected to the upper connecting part through the lower through hole. Specifically, the electrical connection can be a cable connection.

[0038] The inner wall of the mounting slot 13 has a first hole and a first cable. The first cable passes through the first hole to realize the electrical connection between the capacitor head 1 and the capacitor amplifier 2. The receiving slot 51 has an upper through hole that penetrates the top surface of the pressure plate 5. The top surface of the probe plate 3 has a lower connector and the bottom surface of the laser head 4 has an upper connector. The lower connector is electrically connected to the lower connector through the upper through hole, or the lower connector is electrically connected to the upper connector through the upper through hole.

[0039] The probe plate 3 is fixed to the wall of the receiving groove 51 by screws. Specifically, the receiving groove 51 is a stepped groove with threaded holes in the stepped portion for locking the probe plate 3. The pressure plate 5 is fixed to the capacitor head 1 by screws, and the capacitor head 1 is locked to the laser head 4 by screws.

[0040] In some embodiments, the mounting groove 13 is provided with a positioning groove, which is a groove added to the outer periphery of the annular structure of the mounting groove 13. The positioning groove communicates with the mounting groove 13. The capacitor amplifier 2 is provided with a protrusion, which is a structure that protrudes outward from the annular structure of the capacitor amplifier 2. When the capacitor amplifier 2 is placed in the mounting groove 13, the positioning groove of the mounting groove 13 and the protrusion of the amplifier fit together, thereby positioning the capacitor amplifier 2 and preventing the capacitor amplifier 2 from moving excessively during actual use.

[0041] In some embodiments, holes can be drilled in the circuit board of the capacitor amplifier 2 and it can be directly fixed in the mounting slot 13 by screws to prevent movement.

[0042] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A capacitor head structure with a built-in capacitor amplifier, comprising a laser head, a pressure plate, and a capacitor head arranged sequentially from top to bottom, characterized in that, It also includes a capacitor amplifier and a probe plate. The capacitor amplifier is located inside the capacitor head and is electrically connected to the capacitor head. The probe plate is located inside the pressure plate and is electrically connected to the capacitor amplifier and the laser head. The capacitance signal of the capacitor head is amplified by the capacitor amplifier and then transmitted to the laser head through the probe plate.

2. The capacitor head structure with a built-in capacitor amplifier as described in claim 1, characterized in that, The capacitor head includes a nozzle and a mounting base, the mounting base having a mounting groove, and the capacitor amplifier located within the mounting groove.

3. The capacitor head structure with a built-in capacitor amplifier as described in claim 2, characterized in that, The mounting base has a through hole in the center, which is coaxial with the mouth. The mounting groove is set in an annular shape with the through hole as the center. The width of the annular shape of the mounting groove is D1. The capacitor amplifier is also set in an annular shape. The width of the annular shape of the capacitor amplifier is D2, where D2 < D1 * 0.

8.

4. The capacitor head structure with a built-in capacitor amplifier as described in claim 3, characterized in that, The mounting groove is provided with a limiting part, which can fill a part of the annular mounting groove. The capacitor amplifier is provided with a cut-off part, which is formed by hollowing out a part of the annular capacitor amplifier. The cut-off part corresponds to the limiting part. The limiting part of the mounting groove corresponds to the cut-off part of the capacitor amplifier. When the capacitor amplifier is placed in the mounting groove, the left side of the limiting part abuts against the front end of the capacitor amplifier, or the right side of the limiting part abuts against the rear end of the capacitor amplifier. The left and right sides of the limiting part abut against the front end and rear end of the capacitor amplifier, respectively.

5. The capacitor head structure with a built-in capacitor amplifier as described in claim 4, characterized in that, The mounting slot is provided with a positioning slot, which is a slot added to the outer periphery of the annular structure of the mounting slot. The positioning slot is connected to the mounting slot. The capacitor amplifier is provided with a protrusion, which is a structure that protrudes outward from the annular structure of the capacitor amplifier. When the capacitor amplifier is placed in the mounting slot, the positioning slot of the mounting slot and the protrusion of the amplifier fit together.

6. The capacitor head structure with a built-in capacitor amplifier as described in claim 4, characterized in that, The left and right sides of the limiting part are set with inwardly concave curved surfaces, and the front and rear ends of the capacitor amplifier are set with protruding semi-circular or semi-elliptical shapes. The concave curved surfaces on the left and right sides of the limiting part can cooperate with the front and rear ends of the capacitor amplifier to assist in the positioning of the capacitor amplifier.

7. The capacitor head structure with a built-in capacitor amplifier as described in claim 2, characterized in that, The pressure plate is provided with a receiving groove, and the probe plate is located in the receiving groove.

8. The capacitor head structure with a built-in capacitor amplifier as described in claim 7, characterized in that, The receiving slot is located above the capacitor amplifier. The receiving slot has a lower through hole that penetrates the bottom surface of the pressure plate. The bottom surface of the probe plate has an upper connecting part, and the top surface of the capacitor amplifier has a lower connecting part. The upper connecting part is electrically connected to the lower connecting part through the lower through hole, or the lower connecting part is electrically connected to the upper connecting part through the lower through hole.

9. The capacitor head structure with a built-in capacitor amplifier according to claim 8, characterized in that, The inner sidewall of the mounting slot is provided with a first hole and a first cable. The first cable passes through the first hole to realize the electrical connection between the capacitor head and the capacitor amplifier. The receiving slot is provided with an upper through hole penetrating the top surface of the pressure plate. The top surface of the probe plate is provided with a lower connector and the bottom surface of the laser head is provided with an upper connector. The lower connector is electrically connected to the upper connector through the upper through hole, or the lower connector is electrically connected to the upper connector through the upper through hole.

10. The capacitor head structure with a built-in capacitor amplifier according to claim 9, characterized in that, The probe plate is fixed to the wall of the receiving groove by screws, the pressure plate is fixed to the capacitor head by screws, and the capacitor head and the laser head are locked together by screws.

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