A handpiece and photocuring machine

Abstract

The application belongs to the technical field of dental equipment and relates to a head and a light curing machine. The head comprises a lamp head, a rotating mechanism and a fixing part, one end of the rotating mechanism is fixedly connected with the lamp head, the other end is rotationally connected with the fixing part, a limiting structure is arranged between the rotating mechanism and the fixing part, and the limiting structure is used for limiting the angle of axial rotation of the lamp head around the head. In some special cases, such as a small patient opening, a molar back surface and an outer surface as the irradiation position, the application can more easily realize the need for vertical irradiation of resin material and can avoid the pulling and fracture of internal wires caused by the unrestricted circumferential rotation of the lamp head.

Description

Technical Field

[0001] This application relates to the field of dental equipment technology, and more specifically, to a device head and a light curing machine. Background Technology

[0002] Currently, most UV curing machines have a straight overall structure. Some use a light guide rod structure, which causes the lamp head to bend. Adjusting the light source angle requires the operator to change their handheld grip, increasing the difficulty and intensity of operation. Furthermore, in specific situations, such as when the patient's opening is small or the irradiation location is the back or outer surface of the molar, it's impossible to achieve perpendicular illumination of the filling material surface. Additionally, some UV curing machines have a rotating lamp head, but the rotation radius around the machine head is uncontrollable, leading to potential breakage of the lamp head's wiring. Moreover, the structure enabling the rotation is often far from the lamp head, resulting in a large radial rotation radius and preventing perpendicular illumination of the filling material surface. Utility Model Content

[0003] The technical solution of this application is to provide a machine head and a photocuring machine to solve the problems in the prior art where the light source cannot vertically irradiate the surface of the filler material and the wires are prone to breakage.

[0004] To solve the above-mentioned technical problems, this application provides a machine head that adopts the following technical solution:

[0005] A device head includes a lamp head, a rotating mechanism, and a fixing component. One end of the rotating mechanism is fixedly connected to the lamp head, and the other end is rotatably connected to the fixing component. A limiting structure is provided between the rotating mechanism and the fixing component to limit the angle of rotation of the lamp head around the axis of the device head.

[0006] Furthermore, the rotating mechanism includes a rotating ball, one end of which has a protrusion connected to the lamp holder, and the fixing member has a receiving cavity in which the rotating ball is rotatably disposed;

[0007] The limiting structure includes a pin and a limiting protrusion. The pin is disposed on the rotating ball and protrudes from the surface of the rotating ball. The limiting protrusion is disposed on the inner wall of the accommodating cavity. The lamp head rotates about the axis of the pin.

[0008] During the rotation of the lamp head around the axis of the machine head, the angle of rotation of the lamp head around the axis of the machine head is limited by the abutment between the pin and the limiting protrusion.

[0009] Furthermore, the diameter of the protrusion increases in the direction away from the rotating sphere, and the outer wall of the protrusion is a conical surface;

[0010] During the rotation of the lamp head around the pin, the angle of rotation of the lamp head around the pin is limited by the contact between the protrusion and the fixing member.

[0011] Furthermore, the fixing component includes a connecting handle, an outer protective sleeve, a top pressure ball cup, and a pre-tightening member; the outer protective sleeve is disposed on the connecting handle and forms the receiving cavity, the connecting handle is provided with a mounting groove, one end of the top pressure ball cup is disposed in the mounting groove and the other end is disposed in the receiving cavity, the two ends of the pre-tightening member respectively abut against the mounting groove and the top pressure ball cup, and the rotating ball is disposed between the outer protective sleeve and the top pressure ball cup.

[0012] Furthermore, the top pressure ball cup includes a bowl body and a top pressure sleeve. The two ends of the bowl body are a bowl surface and a plane, respectively. The top pressure sleeve is connected to the plane. The pre-tightening member is sleeved on the top pressure sleeve, and the two ends of the pre-tightening member abut against the plane and the bottom of the mounting groove, respectively. The spherical surface of the rotating ball abuts against the bowl surface.

[0013] Furthermore, an irregularly shaped sealing ring is provided between the outer protective sleeve and the rotating ball, the inner wall of the irregularly shaped sealing ring being arc-shaped and closely fitting the spherical surface of the rotating ball.

[0014] Furthermore, a first sealing ring is provided between the outer protective sleeve and the rotating ball, the irregular sealing ring is located at the end of the outer protective sleeve away from the connecting handle, and the first sealing ring is located between the pin and the top pressure ball cup.

[0015] Furthermore, a light source assembly is provided at the end of the lamp head away from the rotating mechanism. The light source assembly has a light source center, and the distance H between the light source center and the axial direction of the pin is less than 25mm.

[0016] Furthermore, the lamp head includes a housing, and the side wall of the housing away from the rotating mechanism has an opening; the light source assembly includes a lamp bead, a condenser cup, a convex lens, and a lamp cover; the lamp bead is disposed inside the housing, the condenser cup is disposed on the lamp bead, the convex lens is disposed on the condenser cup, and the lamp cover is connected to the opening and abuts against the convex lens; the lamp bead serves as the center of the light source.

[0017] Furthermore, the outer shell is integrally formed with the rotating mechanism.

[0018] Furthermore, the lamp head, rotating mechanism, and fixing component are provided with interconnected channels, which pass through the protrusion and the rotating ball, and the wires of the light source assembly are disposed within the channels.

[0019] To solve the above-mentioned technical problems, this application also provides a photocuring machine, which adopts the following technical solution:

[0020] A light curing machine includes a handle and a machine head as described above, wherein the handle is connected to the fixing member.

[0021] Compared with the prior art, the technical solution of this application has the following advantages: The rotating mechanism enables the lamp head and the fixing component to rotate. When the illumination angle of the lamp head needs to be adjusted, rotating the lamp head allows it to rotate around the machine head, achieving multi-angle rotation and making it easier to achieve the need for vertical irradiation of resin materials. Furthermore, this application divides the machine head into three parts: the lamp head, the rotating mechanism, and the fixing component. Compared to the solution where the entire machine head handle rotates, this reduces the distance between the lamp head and the structure that enables the rotation, thus reducing the lamp head's rotation radius. Compared to structures with a straight section and a large rotation radius, this application makes it easier to achieve vertical irradiation of resin materials in certain special cases, such as when the patient's opening is small or the irradiation position is on the back or outer surface of the molar. In addition, a limiting structure is provided between the rotating mechanism and the fixing component to limit the rotation angle of the lamp head around the machine head axis, preventing the internal wires from being pulled and broken due to unrestricted circumferential rotation of the lamp head. Attached Figure Description

[0022] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a side view of a machine head structure provided in an embodiment of this application;

[0024] Figure 2 This is a front view structural diagram of a machine head provided in an embodiment of this application;

[0025] Figure 3 yes Figure 2 A cross-sectional view along the axial direction of the pin;

[0026] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0027] Figure 5 This is an exploded view of a nose cone provided in an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of an irregularly shaped sealing ring in a machine head provided in an embodiment of this application;

[0029] Figure 7This is a schematic diagram of a top pressure ball cup in a machine head provided in an embodiment of this application;

[0030] Figure 8 This is a schematic diagram of a lamp head, a light source assembly, and a rotating mechanism in an optical head according to an embodiment of this application;

[0031] Figure 9 yes Figure 1 A schematic diagram of the structure in which the lamp head housing and the rotating mechanism are integrally formed.

[0032] Reference numerals: 100, head; 10, lamp holder; 11, outer shell; 12, opening; 20, rotating mechanism; 21, protrusion; 22, rotating ball; 30, fixing component; 31, receiving cavity; 32, connecting handle; 33, outer protective sleeve; 34, top pressure ball cup; 341, cup body; 342, top pressure sleeve; 35, pre-tightening component; 36, mounting groove; 37, irregular sealing ring; 38, first sealing ring; 391, retaining ring; 392, second sealing ring; 40, limiting structure; 41, pin; 42, limiting protrusion; 50, light source assembly; 51, lamp bead; 52, condenser cup; 53, convex lens; 54, lamp cover; 55, third sealing ring; a, channel. Detailed Implementation

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0034] 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.

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0036] This application provides a head unit, such as... Figure 1 , 2As shown in Figure 5, the head unit 100 includes a lamp head 10, a rotating mechanism 20, and a fixing member 30. One end of the rotating mechanism 20 is fixedly connected to the lamp head 10, and the other end is rotatably connected to the fixing member 30. A limiting structure 40 is provided between the rotating mechanism 20 and the fixing member 30. The limiting structure 40 is used to limit the angle of rotation of the lamp head 10 around the axis of the head unit 100.

[0037] In this embodiment, the rotating mechanism 20 enables the rotatable connection between the lamp head 10 and the fixing member 30. When it is necessary to adjust the irradiation angle of the lamp head 10, rotating the lamp head 10 will allow the lamp head 10 to rotate around the machine head 100, thereby enabling the lamp head 10 to rotate at multiple angles, which makes it easier to achieve the need for vertical irradiation of resin materials. Furthermore, this application divides the machine head 100 into three parts: the lamp head 10, the rotating mechanism 20, and the fixing member 30. Compared with the solution of rotating the entire machine head handle, this reduces the distance between the lamp head and the structure that realizes the rotation function, thereby reducing the rotation radius of the lamp head. Compared with the structure with a straight section and a large rotation radius, this application makes it easier to achieve the need for vertical irradiation of resin materials in certain special cases, such as when the patient's opening is small or the irradiation position is the back or outer surface of the molar.

[0038] In addition, a limiting structure 40 is provided between the rotating mechanism 20 and the fixing member 30 to limit the rotation angle of the lamp head 10 around the axis of the head 100, so as to avoid the internal wires being pulled and broken due to the unlimited circumferential rotation of the lamp head 10.

[0039] like Figures 1-3 As shown, the rotating mechanism 20 further includes a rotating ball 22, one end of which is provided with a protrusion 21, the protrusion 21 being connected to the lamp holder 10, and the fixing member 30 being provided with a receiving cavity 31, the rotating ball 22 being rotatably disposed within the receiving cavity 31;

[0040] The limiting structure 40 includes a pin 41 and a limiting protrusion 42. The pin 41 is disposed on the rotating ball 22 and protrudes from the surface of the rotating ball 22. The limiting protrusion 42 is disposed on the inner wall of the accommodating cavity 31. The lamp head 10 rotates about the axis of the pin 41.

[0041] During the rotation of the lamp head 10 around the axial direction of the machine head 100, the angle of rotation of the lamp head 10 around the axial direction of the machine head 100 is limited by the contact between the pin 41 and the limiting protrusion 42.

[0042] In this embodiment, the lamp head 10 can be rotated axially around the pin 41 and / or axially around the head 100 as needed to achieve multi-angle rotation of the lamp head 10, thereby making it easier to achieve the need for vertical irradiation of resin materials. In addition, since the pin 41 protrudes from the surface of the rotating ball 22 and the limiting protrusion 42 is provided in the receiving cavity 31, during the axial rotation of the lamp head 10 around the head 100, the rotation angle of the lamp head 10 around the head 100 is limited by the contact between the pin 1 and the limiting protrusion 42, so that the rotation angle of the rotating ball 22 in the circumferential direction of the head 100 is less than 360°, thereby avoiding the internal wires from being pulled and broken due to the unrestricted circumferential rotation of the lamp head 10.

[0043] Specifically, the axial directions of the protrusion 21 and the pin 41 are perpendicular to each other.

[0044] like Figure 4 As shown, further, the diameter of the protrusion 21 increases in the direction away from the rotating ball 22, and the outer wall of the protrusion 21 is a conical surface;

[0045] During the axial rotation of the lamp head 10 around the pin 41, the angle of rotation of the lamp head 10 around the pin 41 is limited by the contact between the protrusion 21 and the fixing member 30.

[0046] In this embodiment, the protrusion 21 has an isosceles inverted trapezoidal cross section in the length direction. During the process of rotating the lamp head 10 around the pin 41, the lamp head 10 cannot continue to rotate due to the contact between the outside of the protrusion 21 and the end of the fixing member 30. This limits the angle of rotation of the lamp head 10 around the pin 41 and avoids the risk of the rotating ball 22 falling off due to the unrestricted rotation of the lamp head 10 around the pin 41.

[0047] like Figure 1 , 2 As shown in Figure 5, the fixing member 30 further includes a connecting handle 32, an outer protective sleeve 33, a top pressure ball cup 34, and a pre-tightening member 35; the outer protective sleeve 33 is disposed on the connecting handle 32 and forms the receiving cavity 31; the connecting handle 32 is provided with a mounting groove 36; one end of the top pressure ball cup 34 is disposed in the mounting groove 36 and the other end is disposed in the receiving cavity; the two ends of the pre-tightening member 35 respectively abut against the mounting groove 36 and the top pressure ball cup 34; and the rotating ball 22 is disposed between the outer protective sleeve 33 and the top pressure ball cup 34.

[0048] In this embodiment, the pre-tightening member 35 provides pre-tightening force, so that the surface of the rotating ball 22 is in close contact with the surface of the top pressure ball cup 34 and the outer protective sleeve 33, so that friction is generated between the rotating ball 22, the top pressure ball cup 34 and the outer protective sleeve 33, providing friction for rotating the lamp head 10, thereby restricting the rotation of the rotating ball 22 and preventing the rotating ball 22 from rotating arbitrarily in the outer protective sleeve 33 and the top pressure ball cup 34 without the influence of external force, ultimately achieving the requirement of adjustable light emission angle of the light source.

[0049] In this embodiment, the magnitude of the damping force can be adjusted by changing the compression amount and elastic coefficient of the preload member 35.

[0050] like Figure 7 As shown, the top pressure ball cup 34 further includes a cup body 341 and a top pressure sleeve 342. The two ends of the cup body 341 are a cup surface (not shown) and a plane (not shown), respectively. The top pressure sleeve 342 is connected to the plane. The pre-tightening member 35 is sleeved on the top pressure sleeve 342, and the two ends of the pre-tightening member 35 abut against the plane and the bottom of the mounting groove 36, respectively. The spherical surface of the rotating ball 22 abuts against the cup surface.

[0051] In this embodiment, the top pressure ball cup 34 includes a cup body 341 and a top pressure sleeve 342. It can apply force to the rotating ball 22 under the action of the pre-tightening member 35, so that the rotating ball 22 fits tightly with the cup body 341, and the rotating ball 22 can rotate smoothly in the cup body 341. Moreover, the top pressure sleeve 342 facilitates the assembly of the pre-tightening member 35, prevents the pre-tightening member 35 from shifting, and also prevents the pre-tightening member 35 from wearing down the wire.

[0052] Specifically, the preload element 35 is a spring.

[0053] Specifically, the bowl body 341 and the top pressure sleeve 342 are integrally formed to prevent the bowl body 341 from separating from the top pressure sleeve 342 when the pre-tightening member applies pre-tightening force to the bowl body 341.

[0054] like Figure 6 As shown, further, an irregularly shaped sealing ring 37 is provided between the outer protective sleeve 33 and the rotating ball 22. The inner wall of the irregularly shaped sealing ring 37 is arc-shaped and closely fits the spherical surface of the rotating ball 22.

[0055] In this embodiment, a shaped sealing ring 37 is provided between the outer protective sleeve 33 and the rotating ball 22, and the inner wall of the shaped sealing ring is an arc surface, so that the shaped sealing ring 37 can fit tightly with the spherical surface of the rotating ball 22, thereby preventing foreign objects such as liquid and dust from entering the interior of the fixing member 30 during rotation; the friction between the rotating ball 22 and the shaped sealing ring 37, the outer protective sleeve 33, and the top pressure ball cup 34 provides damping for rotating the lamp head 10, preventing the rotating ball 22 from rotating randomly in the outer protective sleeve 33 and the top pressure ball cup 34 without the influence of external force.

[0056] In this embodiment, the magnitude of the damping force can be adjusted by changing the compression amount and elastic coefficient of the preload member 35, and can be connected by the compression deformation amount of the irregular sealing ring 37.

[0057] Furthermore, the inner diameter of the irregular sealing ring 37 near the protrusion 21 is smaller than the inner diameter of the end near the top pressure ball cup 34; or, the inner diameters of both ends of the irregular sealing ring 37 are larger than the inner diameter of its middle part; or, the inner diameter of the irregular sealing ring 37 near the protrusion 21 is larger than the inner diameter of the end near the top pressure ball cup 34.

[0058] In the above embodiments, the inner diameter of the irregular sealing ring 37 is an arc surface, which can fit tightly with the spherical surface of the rotating ball 22 to achieve a sealing effect. It can be set according to actual needs, and this application does not impose any restrictions.

[0059] like Figure 1 , 2 As shown, a first sealing ring 38 is further provided between the outer protective sleeve 33 and the rotating ball 22. The irregular sealing ring 37 is located at the end of the outer protective sleeve 33 away from the connecting handle 32, and the first sealing ring 38 is located between the pin 41 and the top pressure ball cup 34.

[0060] In this embodiment, the first sealing ring 38 enhances the overall sealing effect of the fixing member 30; the friction between the rotating ball 22 and the irregular sealing ring 37, the outer protective sleeve 33, the top pressure ball cup 34, and the first sealing ring 38 provides damping for rotating the lamp head 10, preventing the rotating ball 22 from rotating randomly in the outer protective sleeve 33 and the top pressure ball cup 34 without the influence of external force.

[0061] In this embodiment, the magnitude of the damping force can be adjusted by changing the compression amount and elastic coefficient of the preload member 35, and can be connected by the compression deformation amount of the irregular sealing ring 37 and the first sealing ring 38.

[0062] like Figure 8As shown, further, the lamp head 10 is provided with a light source assembly 50 at the end away from the rotating mechanism 20. The light source assembly 50 has a light source center, and the distance H between the light source center and the axial direction of the pin 41 is less than 25mm.

[0063] In this embodiment, the lamp head 10 rotates around the axis of the pin 41, with the axis of the pin 41 serving as the center of rotation. Based on this, the distance H between the center of the light source and the center of rotation is shortened. The distance H is less than the average distance between the adult molar and the vermilion border of the lip (approximately 2.5 to 4 cm), which makes the rotating mechanism 20 located inside the oral cavity. This makes it easier to achieve vertical illumination of the back of the molar by the light source.

[0064] like Figure 1 , 2 As shown, further, the lamp head 10 includes a housing 11, and the side wall of the housing 11 away from the rotating mechanism 20 is provided with an opening 12; the light source assembly 50 includes a lamp bead 51, a condenser cup 52, a convex lens 53, and a lamp cover 54; the lamp bead 51 is disposed inside the housing 11, the condenser cup 52 covers the lamp bead 51, the convex lens 53 is disposed on the condenser cup 52, and the lamp cover 54 is connected to the opening 12 and abuts against the convex lens 53; the lamp bead 51 serves as the center of the light source.

[0065] In this embodiment, the light emitted by the lamp bead 51 is focused by the condenser cup 52 and the convex lens 53 before being emitted.

[0066] Furthermore, a third sealing ring 55 is provided between the lamp cover 54 and the outer shell 11 to prevent foreign objects such as liquids and dust from entering the lamp head 10.

[0067] like Figure 9 As shown, in another embodiment, the outer shell 11 is integrally formed with the rotating mechanism 20.

[0068] In the above embodiments, the outer shell 11 and the rotating mechanism 20 are integrally formed, which can reduce the assembly steps of the head 100.

[0069] Furthermore, the lamp head 10, the rotating mechanism 20, and the fixing member 30 are provided with interconnected channels a, the channels a passing through the protrusion 21 and the rotating ball 22, and the wires of the light source assembly 50 are disposed in the channels a.

[0070] In this embodiment, channels are provided on the lamp head 10, the rotating mechanism 20 and the fixing member 30, and the wires of the light source assembly 50 are placed in the channel a, which can avoid damage to the wires by external factors.

[0071] In this embodiment, the wire of the lamp bead 51 is located in channel a.

[0072] Specifically, the channel a passes through the bowl body 341, the top pressure sleeve 342, and the connecting handle 32.

[0073] In this embodiment, when channel a passes through the bowl 341, the top pressure sleeve 342 and the connecting handle 32, and the protrusion 21 abuts against the fixing member 30 to limit the angle of rotation of the lamp head 10 around the pin 41, the situation where the wire is pinched or damaged by the rotating ball 22 and the fixing member 30 when the lamp head 10 rotates around the pin 41 can be avoided.

[0074] like Figure 1 , 2 As shown, the light curing machine further includes a handle (not shown), which is connected to the fixing member 30.

[0075] In this embodiment, the handle is used to power the head unit.

[0076] Specifically, the handle is connected to the connecting handle 32; the end of the connecting handle 32 away from the outer protective sleeve 33 is provided with a retaining ring 391 and a second sealing ring 392, the retaining ring 391 is engaged with the handle, and the second sealing ring 392 is located between the handle and the connecting handle 32.

[0077] In this embodiment, the retaining ring 391 improves the connection stability between the handle and the connecting handle 32, and the second sealing ring 392 improves the sealing performance between the handle and the connecting handle.

[0078] Specifically, the wires of the light source assembly 50 are connected to the handle through channel a.

[0079] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A machine head, characterized in that, It includes a lamp head, a rotating mechanism, and a fixing component. One end of the rotating mechanism is fixedly connected to the lamp head, and the other end is rotatably connected to the fixing component. A limiting structure is provided between the rotating mechanism and the fixing component. The limiting structure is used to limit the angle of rotation of the lamp head around the axis of the machine head.

2. The machine head according to claim 1, characterized in that, The rotating mechanism includes a rotating ball, one end of which has a protrusion that is connected to the lamp holder. The fixing member has a receiving cavity, and the rotating ball is rotatably disposed within the receiving cavity. The limiting structure includes a pin and a limiting protrusion. The pin is disposed on the rotating ball and protrudes from the surface of the rotating ball. The limiting protrusion is disposed on the inner wall of the accommodating cavity. The lamp head rotates about the axis of the pin. During the rotation of the lamp head around the axis of the machine head, the angle of rotation of the lamp head around the axis of the machine head is limited by the abutment between the pin and the limiting protrusion.

3. The machine head according to claim 2, characterized in that, The diameter of the protrusion increases in the direction away from the rotating ball, and the outer wall of the protrusion is a conical surface; During the rotation of the lamp head around the pin, the angle of rotation of the lamp head around the pin is limited by the contact between the protrusion and the fixing member.

4. The machine head according to claim 2 or 3, characterized in that, The fixing component includes a connecting handle, an outer protective sleeve, a top pressure ball cup, and a pre-tightening component; the outer protective sleeve is disposed on the connecting handle and forms the receiving cavity, the connecting handle is provided with a mounting groove, one end of the top pressure ball cup is disposed in the mounting groove and the other end is disposed in the receiving cavity, the two ends of the pre-tightening component respectively abut against the mounting groove and the top pressure ball cup, and the rotating ball is disposed between the outer protective sleeve and the top pressure ball cup.

5. The machine head according to claim 4, characterized in that, The top-pressure ball cup includes a bowl body and a top-pressure sleeve. The two ends of the bowl body are a bowl surface and a plane, respectively. The top-pressure sleeve is connected to the plane. The pre-tightening member is sleeved on the top-pressure sleeve, and the two ends of the pre-tightening member abut against the plane and the bottom of the mounting groove, respectively. The spherical surface of the rotating ball abuts against the bowl surface.

6. The machine head according to claim 4, characterized in that, An irregularly shaped sealing ring is provided between the outer protective sleeve and the rotating ball. The inner wall of the irregularly shaped sealing ring is arc-shaped and fits tightly against the spherical surface of the rotating ball.

7. The machine head according to claim 6, characterized in that, A first sealing ring is provided between the outer protective sleeve and the rotating ball. The irregularly shaped sealing ring is located at the end of the outer protective sleeve away from the connecting handle, and the first sealing ring is located between the pin and the top pressure ball cup.

8. The machine head according to claim 2, characterized in that, The lamp head is provided with a light source assembly at the end away from the rotating mechanism. The light source assembly has a light source center, and the distance H between the light source center and the pin along the axis is less than 25mm.

9. The machine head according to claim 8, characterized in that, The lamp head includes a housing, and the side wall of the housing away from the rotating mechanism has an opening; the light source assembly includes a lamp bead, a condenser cup, a convex lens, and a lamp cover; the lamp bead is disposed inside the housing, the condenser cup is disposed on the lamp bead, the convex lens is disposed on the condenser cup, and the lamp cover is connected to the opening and abuts against the convex lens; the lamp bead serves as the center of the light source.

10. The machine head according to claim 9, characterized in that, The outer shell is integrally formed with the rotating mechanism.

11. The machine head according to claim 8, characterized in that, The lamp head, rotating mechanism, and fixing component are provided with interconnected channels, which pass through the protrusion and the rotating ball, and the wires of the light source assembly are located in the channels.

12. A photocuring machine, characterized in that, The light curing machine includes a handle and a machine head as described in any one of claims 1 to 11, wherein the handle is connected to the fixing member.

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