Spring seal for laser processing head, lens assembly and handheld laser processing head

Abstract

The utility model provides a spring seal for laser processing head, lens subassembly and handheld laser processing head, the spring seal for laser processing head includes spring seal ring body, elastic piece and isolation layer, the spring seal ring body forms the mounting cavity, the elastic piece is fixed in the mounting cavity, and the isolation layer is fixed on the spring seal ring body. The space between the elastic piece and the cavity wall of the installation cavity is filled with the sealant to form an isolation layer, the spring seal ring body is provided with an opening part communicated with the installation cavity, and the isolation layer is at least sealed to the side, facing the opening part, of the elastic piece, so that fine dust generated by extrusion friction of the spring and the spring seal ring body is sealed in the spring seal through the isolation layer. When the laser processing head is used in cooperation with the lens, dust can be prevented from entering the lens area, the cleanliness of the lens is kept, lens burning caused by dirt is prevented, the service life of the lens and the laser processing head is prolonged, and the maintenance and replacement cost of the laser processing head is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing heads, in particular to a pan seal for a laser processing head, a lens assembly and a handheld laser processing head. Background Art

[0002] A pan seal, also known as a "plug seal," is a high-performance seal. In laser processing heads, pan seals offer excellent sealing performance, effectively preventing dust, moisture, and other contaminants from entering the laser cavity, thereby protecting the laser lens from damage.

[0003] The prior art pan seal comprises a pan seal ring body and a spring, wherein the spring is located in the pan seal ring body.

[0004] The applicant has discovered that the existing technology has at least the following technical problems: During drop and squeeze tests, the current pan-seal and spring will produce very fine dust due to friction between the metal spring and the pan-seal body. This makes it unsuitable for products requiring ultra-high cleanliness. The dust will contaminate lenses, etc., resulting in adverse effects. Utility Model Content

[0005] The purpose of the present invention is to provide a pan seal for a laser processing head, a lens assembly, and a handheld laser processing head, so as to solve the technical problem in the prior art that the pan seal ring and the internal spring are squeezed and rubbed to produce fine dust, which contaminates the product and affects the sealing effect. The various technical effects that can be produced by the preferred technical solution among the many technical solutions provided by the present invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The utility model provides a flood seal for a laser processing head, comprising a flood seal ring body, an elastic member and an isolation layer, wherein:

[0008] An installation cavity is formed in the pan-seal ring body, the elastic member is fixedly installed in the installation cavity, and sealant is filled between the elastic member and the cavity wall of the installation cavity to form the isolation layer; the pan-seal ring body is provided with an open portion communicating with the installation cavity, and the isolation layer is sealed on at least one side of the elastic member facing the open portion to prevent dust from escaping.

[0009] Preferably, the isolation layer is arranged outside the elastic member and wraps the elastic member 360°.

[0010] Preferably, the installation cavity is an annular cavity, the elastic member is an annular structure, and the installation cavity, the elastic member and the isolation layer are coaxially arranged.

[0011] Preferably, the radial cross-section of the elastic member is V-shaped, U-shaped, O-shaped or spiral-shaped.

[0012] Preferably, the shape of the inner ring of the isolation layer matches the radial cross-section of the elastic member. When the radial cross-section of the elastic member is V-shaped, the radial cross-section of the inner ring of the isolation layer is also V-shaped.

[0013] Preferably, the inner circle of the isolation layer faces the open portion.

[0014] Preferably, a reserved space is formed between the isolation layer and the cavity wall of the installation cavity, the reserved space is located on the inner ring side of the elastic member facing the pan-seal ring body, and the reserved space is communicated with the open portion.

[0015] Preferably, the elastic member is a spring.

[0016] The utility model provides a lens assembly, comprising a lens and the above-mentioned flood seal for a laser processing head, wherein the flood seal for a laser processing head is located on one side or both sides of the lens.

[0017] The utility model also provides a handheld laser processing head, comprising the lens assembly.

[0018] Compared with the prior art, the present invention provides a pan-seal for a laser processing head, a lens assembly, and a handheld laser processing head, which have the following beneficial effects: a mounting cavity is formed in the pan-seal ring body, an elastic member is fixedly mounted in the mounting cavity, and sealant is filled between the elastic member and the cavity wall of the mounting cavity to form an isolation layer; the pan-seal ring body is provided with an open portion communicating with the mounting cavity, and the isolation layer is sealed to at least one side of the elastic member facing the open portion, so that fine dust generated by friction between the spring and the pan-seal ring body is sealed within the isolation layer. When used in conjunction with a lens, dust can be prevented from entering the lens area, thereby maintaining the cleanliness of the lens and preventing the lens from burning due to dirt, thereby increasing the service life of the lens and the laser processing head and reducing the maintenance and replacement costs of the laser processing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the pan plug seal for the laser processing head;

[0021] Figure 2 This is a schematic diagram of the radial cross-sectional structure of a pan-plug seal for a laser processing head;

[0022] Figure 3 1. It is a structural diagram of a pan-plug sealing ring body;

[0023] Figure 4 It is a schematic diagram of the structure of the spring;

[0024] Figure 5 It is a structural diagram of the isolation layer;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of a handheld laser processing head;

[0026] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0027] In the figure, 100 is a pan-seal for a laser processing head; 1 is a pan-seal ring; 101 is a mounting cavity; 1011 is a reserved space; 102 is an open portion; 2 is an elastic member; 3 is an isolation layer; and 4 is a lens. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center," "length," "width," "height," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and "side" and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In the description of the utility model, still need explaining, unless another explicit provision and limitation, term "arrange", "install", "link", "connect" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the intercommunication.For ordinary skilled person in the art, the above-mentioned terms can be understood in the utility model with the concrete meaning of the specific situation.

[0031] The utility model embodiment provides a kind of laser processing head with pan plug seal, lens assembly and hand-held laser processing head, can effectively prevent the problem of dust influence product use that friction generates in use process.

[0032] The following will be described in detail in combination with Figure 1-Figure 7 The technical solutions of the utility model are described in more detail.

[0033] Example 1:

[0034] The utility model provides a kind of laser processing head with pan plug seal 100, including pan plug seal ring body 1, elastic member 2 and isolation layer 3, wherein: pan plug seal ring body 1 is formed with installation cavity 101 in, elastic member 2 is fixedly installed in installation cavity 101, and isolation layer 3 is formed between elastic member 2 and the side wall of installation cavity 101 filled with sealant, as optional implementation, referring to Figure 2 As shown, the inner ring of pan plug seal ring body 1 is provided with open part 102, open part 102 is communicated with installation cavity 101, and the inner ring of isolation layer 3 faces open part 102. Refer to Figure 2 As shown, isolation layer 3 and the side wall of installation cavity 101 form a reserved space 1011, the reserved space 1011 is located on the side of the inner ring of pan plug seal ring body 1 of elastic member 2, and the reserved space 1011 is communicated with open part 102.

[0035] Isolation layer is sealed at least on the side of elastic member 2 towards open part 102, to prevent dust from escaping.

[0036] Medium can extend into reserved space 1011 from open part 102 and contact isolation layer 3, and the elastic deformation of elastic member 2 drives the deformation of isolation layer 3, thereby achieving sealing effect. The setting of reserved space 1011 can control the filling amount of sealant, prevent the overflow of isolation layer 3 caused by too much sealant filling, and prevent the overflow of isolation layer 3 from installation cavity 101, which may contaminate the cleanliness of the sealed member such as lens 4, and affect the sealing effect of laser processing head with pan plug seal 100.

[0037] As an optional implementation, the sealing glue is UV glue or other glue that plays a sealing isolation role. When the sealing glue is UV glue, the sealing glue needs to be irradiated by a UV lamp after being filled between the elastic member 2 and the side wall of the mounting cavity 101, so that the glue layer is cured to form the isolation layer 3.

[0038] Preferably, referring to Figure 2 , the isolation layer 3 is arranged outside the elastic member 2 to wrap the elastic member 2 by 360°, completely wrapping the dust in the rubber ring, preventing the dust from overflowing.

[0039] The laser processing head uses the pan seal 100, the isolation layer 3 is formed by filling the sealing glue between the elastic member 2 and the side wall of the mounting cavity 101, the isolation layer 3 is located outside the elastic member 2 to wrap the elastic member 2 by 360°, the fine dust rubbed off by the spring and the pan seal ring body 1 is inside the isolation layer 3, and cannot enter the lens 4 area, keeping the lens 4 clean and preventing the problem of dirtying the lens 4.

[0040] The laser processing head uses the pan seal 100, which can effectively prevent the problem of affecting product use caused by replacing the lens 4 or generating dust due to friction during use for products such as lenses 4 that require ultra-high cleanliness.

[0041] The laser processing head uses the pan seal 100, which can effectively prevent the problem of affecting product use caused by replacing the lens 4 or generating dust due to friction during use for products such as lenses 4 that require ultra-high cleanliness.

[0042] As an optional implementation, the elastic member 2 is a spring. The elastic member 2 is installed in the mounting cavity 101 of the pan seal ring body 1, and the radial section of the elastic member 2 is V-shaped, U-shaped, O-shaped, or spiral-shaped.

[0043] The elastic member 2 provides the necessary spring force to push out and gently press the sealing lip (face) against the sealed metal surface to generate excellent sealing effect. The actuation effect of the spring can overcome the slight eccentricity of the metal mating surface and the wear of the sealing lip, continuously maintaining the expected sealing performance. The spring material can be selected according to different use environments, such as stainless steel, to adapt to high-temperature corrosive fluid environments.

[0044] As an optional implementation, referring to Figure 2 , the mounting cavity 101 is a ring-shaped cavity, the elastic member 2 is a ring-shaped structure, and the mounting cavity 101, the elastic member 2, and the isolation layer 3 are coaxially arranged. The above structure facilitates improving the stability of the structure of the laser processing head pan seal 100.

[0045] As an optional implementation, referring to Figure 2As shown, the inner ring shape of the isolation layer 3 matches the radial cross-section of the elastic member 2. When the radial cross-section of the elastic member 2 is V-shaped, the inner ring radial cross-section of the isolation layer 3 is also V-shaped. The isolation layer 3 of the above structure prevents dust without affecting the performance of the elastic member 2.

[0046] As an optional embodiment, the laser processing head pan seal 100 can be installed in different types of laser processing heads such as laser welding heads, laser cutting heads, laser cladding heads, etc. to seal the lenses in the processing heads.

[0047] Example 2

[0048] See also Figure 6 and Figure 7 As shown, this embodiment provides a lens assembly, including a lens 4 and the above-mentioned pan seal 100 for the laser processing head, and the pan seal 100 for the laser processing head is located on one side or both sides of the lens 4.

[0049] As an optional embodiment, the lens 4 is a collimating lens or a focusing lens, and the lens 4 is installed in the laser processing head to convert the divergent light transmitted from the optical fiber into parallel light or focus the parallel light.

[0050] The laser processing head pan seal 100 can be applied to one side or both sides of the lens 4 to seal the lens. Figure 6 As shown, during the drop and squeeze test of the pan-seal ring body 1 and the elastic member 2, tiny dust generated by the friction between the elastic member 2 and the pan-seal ring body 1 is prevented from contaminating the lens 4, thereby improving product quality and sealing effect.

[0051] Example 3

[0052] See also Figure 6 and Figure 7 As shown, this embodiment provides a handheld laser processing head, including the above-mentioned lens assembly.

[0053] The lens assembly can be applied to a handheld laser processing head to protect the lens 4 and improve product quality and sealing effect.

[0054] In the description of this specification, specific features, structures or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0056] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A flood seal for a laser processing head, characterized in that: It includes a pan-seal ring body, an elastic member and an isolation layer, wherein: An installation cavity is formed in the pan-seal ring body, the elastic member is fixedly installed in the installation cavity, and sealant is filled between the elastic member and the cavity wall of the installation cavity to form the isolation layer; The pan-seal ring body is provided with an open portion communicating with the installation cavity, and the isolation layer is sealed at least on a side of the elastic member facing the open portion, thereby preventing dust from escaping.

2. The flood seal for a laser processing head according to claim 1, wherein: The isolation layer is arranged outside the elastic member and wraps the elastic member 360 degrees.

3. The flood seal for a laser processing head according to claim 1, wherein: The installation cavity is an annular cavity, the elastic member is an annular structure, and the installation cavity, the elastic member and the isolation layer are coaxially arranged.

4. The flood seal for a laser processing head according to claim 1, wherein: The radial cross section of the elastic member is V-shaped, U-shaped, O-shaped or spiral-shaped.

5. The flood seal for a laser processing head according to claim 1, wherein: The inner ring shape of the isolation layer matches the radial cross-section of the elastic member. When the radial cross-section of the elastic member is V-shaped, the inner ring radial cross-section of the isolation layer is also V-shaped.

6. The flood seal for a laser processing head according to claim 5, characterized in that: The inner circle of the isolation layer faces the open portion.

7. The flood seal for a laser processing head according to claim 5, wherein: A reserved space is formed between the isolation layer and the cavity wall of the installation cavity. The reserved space is located on the inner ring side of the elastic member facing the pan-seal ring body, and the reserved space is communicated with the open portion.

8. The flood seal for a laser processing head according to claim 1, wherein: The elastic member is a spring.

9. A lens assembly, characterized in that: The invention comprises a lens and the pan-plug seal for a laser processing head according to any one of claims 1 to 8, wherein the pan-plug seal for a laser processing head is located on one side or both sides of the lens.

10. A handheld laser processing head, characterized in that: A lens assembly comprising the lens assembly of claim 9.

Images