Mould and laser welding device suitable for same-series multi-specification products

Abstract

The invention provides a mould and a laser welding device suitable for same-series multi-specification products, the mould comprises a laser guide part and an object supporting part, the laser guide part comprises a laser mounting plate and a light guide block which are relatively fixed, and the object supporting part comprises a mould bottom plate, a positioning mounting plate and a profiling positioning block which are sequentially arranged from bottom to top; the profiling positioning block is used for positioning and supporting a to-be-welded object, a laser is mounted on the laser mounting plate, and when the laser guide part and the object supporting part are closed, laser emitted by the laser can be emitted to a to-be-welded area of the to-be-welded object after being guided by the light guide block. By switching the light guide blocks in contact with the to-be-welded object, the welding requirements of products of the same series and different specifications are met.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a mold and a laser welding device suitable for products of the same series and with multiple specifications. Background Art

[0002] In modern manufacturing, laser welding technology is widely used in various material processing fields due to its high precision, low heat-affected zone and ability to connect complex structural components. Especially in the mold manufacturing industry, laser welding is used to improve the service life and performance of products. However, the existing laser welding mold design has certain limitations, mainly manifested in that each mold can only be used to produce a single type of product. The molds corresponding to products of different specifications in the same series not only need to be customized, but the remaining parts of the mold, such as welding fixtures, need to be purchased and made again, which greatly wastes resources and increases the company's operating costs. Summary of the invention

[0003] Based on the above content, the present invention provides a mold and a laser welding device suitable for products of multiple specifications in the same series, aiming to solve the technical problem in the prior art that molds of products of different specifications in the same series cannot be shared.

[0004] A jig for laser welding of products, comprising a laser guide portion and an object support portion, wherein the laser guide portion comprises a relatively fixed laser mounting plate and a light guide block, and the object support portion comprises a jig bottom plate, a positioning mounting plate and a contour positioning block arranged in sequence from bottom to top;

[0005] The contour positioning block is used to position and support the object to be welded.

[0006] The laser mounting plate is equipped with a laser.

[0007] When the laser guide part and the object support part are molded together, the laser emitted by the laser can be emitted to the welding area of ​​the object to be welded after being guided by the light guide block.

[0008] Further, the light guide block includes a light guide block inner plate and a light guide block outer plate, and the light guide block inner plate is fixed inside the light guide block outer plate;

[0009] A vertical light guide groove is formed between the outer side wall of the inner plate of the light guide block and the inner side wall of the outer plate of the light guide block;

[0010] The inner plate of the light guide block is provided with a laser reflecting surface facing the emission port of the laser above the light guide groove. The laser emitted by the laser enters the light guide groove after being reflected by the laser reflecting surface. The light guide groove guides the laser to the welding part of the object to be welded.

[0011] Furthermore, the object support portion also includes a position adjustment block fixed on the mold bottom plate;

[0012] The position adjustment block adjusts the position of the positioning mounting plate by means of bolts.

[0013] Furthermore, a plurality of lasers are mounted on each of the four side walls of the laser mounting plate;

[0014] Four light guide grooves are formed between the four outer side walls of the inner plate of the light guide block and the four inner side walls of the outer plate of the light guide block;

[0015] When the laser guide part and the object support part are molded together, each light guide groove guides the laser emitted by the laser on the same side to the object to be welded.

[0016] Furthermore, the inner plate of the light guide block is provided with a receiving groove;

[0017] The laser guide part and the object support part clamp the object to be welded when the mold is closed, and the accommodating groove faces the non-to-be-welded area of ​​the object to be welded.

[0018] A laser welding device suitable for products of multiple specifications in the same series, comprising a laser welding mold and the aforementioned mold, wherein the laser welding mold comprises:

[0019] Mold upper plate;

[0020] The lower plate of the mold is used to fix the object support part of the mold;

[0021] The mold upper support plate, the lower end surface of the mold upper support plate is fixedly connected to the laser guide part of the mold, and the upper end surface of the mold upper support plate is fixedly connected to the mold upper plate;

[0022] The telescopic limit shaft is arranged between the upper plate and the lower plate of the mold, and the distance between the upper plate and the lower plate of the mold is adjusted by telescoping, so as to realize the closing and parting of the laser guide part and the object support part.

[0023] Furthermore, a buffer is provided on the upper plate of the mold;

[0024] The lower plate of the mold is provided with buffer limiting columns corresponding to the upper and lower parts of the buffer.

[0025] Furthermore, the lower plate of the mold is also provided with a roller seat, and the roller seat is provided with a roller.

[0026] Furthermore, the laser welding device also includes a laser welding frame, and the laser welding frame includes:

[0027] From top to bottom, the welding frame upper plate, welding frame middle plate and welding frame lower plate;

[0028] A linear guide column passes through the middle plate of the welding frame and is fixed between the upper plate of the welding frame and the lower plate of the welding frame;

[0029] The mold frame lifting cylinder is fixed on the lower plate of the welding frame, and the end of the piston rod of the mold frame lifting cylinder is fixed on the middle plate of the welding frame;

[0030] The upper plate of the welding frame and the upper plate of the mold are fixedly connected;

[0031] The welding frame middle plate and the mold lower plate are fixedly connected;

[0032] The piston rod of the mold frame lifting cylinder is extended and retracted to drive the welding frame middle plate to rise and fall along the linear guide column.

[0033] Furthermore, the laser welding device also includes a device body;

[0034] The inside of the device body is provided with a mounting frame for mounting a laser welding frame;

[0035] The front side of the device body includes a switch door.

[0036] The beneficial technical effect of the present invention is that by switching the light guide block in contact with the object to be welded, the welding requirements of the same series of products with different specifications can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of a laser welding device applicable to products of multiple specifications in the same series according to the present invention;

[0038] Figure 2-3 This is a schematic diagram of the structure of the device body of a laser welding device applicable to products of multiple specifications in the same series according to the present invention;

[0039] Figure 4 It is a structural schematic diagram of a laser welding frame of a laser welding device applicable to products of multiple specifications in the same series according to the present invention;

[0040] Figure 5 It is a structural schematic diagram of a laser welding mold of a laser welding device applicable to products of multiple specifications in the same series according to the present invention;

[0041] Figure 6 It is a structural schematic diagram of a laser welding device jig applicable to products of multiple specifications in the same series according to the present invention;

[0042] Figure 7 and Fig. 9 It is a schematic cross-sectional structure diagram of two specifications of laser guide parts of a laser welding device applicable to multiple specifications of products in the same series of the present invention;

[0043] Figure 8 It is a three-dimensional structural schematic diagram of a laser guide part of a laser welding device applicable to products of multiple specifications in the same series according to the present invention;

[0044] in,

[0045] 1-laser guide; 101-laser mounting plate; 102-light guide block; 1011-laser; 1021-light guide block inner plate; 1022-light guide block outer plate; 1023-light guide groove; 1024-laser reflection surface; 1025-accommodation groove; 1012-first through hole; 1026-second through hole;

[0046] 2-object support part; 201-tire bottom plate; 202-positioning mounting plate; 203-profile positioning block; 204-position adjustment block; 2021-mounting hole; 2041-screw hole;

[0047] 3-laser welding mold; 301-mold upper plate; 302-mold lower plate; 303-mold upper support plate; 304-telescopic limit shaft; 3011-buffer; 3021-buffer limit column; 305-connecting column; 3022-plug pin; 3023-roller seat;

[0048] 4-laser welding frame; 401-welding frame upper plate; 402-welding frame middle plate; 403-welding frame lower plate; 404-linear guide column; 405-mold frame lifting cylinder;

[0049] 5-device body; 501-mounting frame; 502-opening and closing door;

[0050] 6-Object to be welded. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0053] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0054] See also Figure 6-9 The present invention provides a jig for laser welding of products, comprising a laser guide portion (1) and an object support portion (2), wherein the laser guide portion (1) comprises a relatively fixed laser mounting plate (101) and a light guide block (102), and the object support portion (2) comprises a jig bottom plate (201), a positioning mounting plate (202) and a contour positioning block (203) arranged in sequence from bottom to top;

[0055] The contour positioning block (203) is used to position and support the object to be welded (6);

[0056] A laser (1011) is mounted on the laser mounting plate (101);

[0057] When the laser guide part (1) and the object support part (2) are molded together, the laser light emitted by the laser (1011) can be emitted to the welding area of ​​the welding object (6) after being guided by the light guide block (102).

[0058] Specifically, the object to be welded is a headlight, or a vehicle actuator, or a visual radar, or other automotive interior decoration parts. For example, in the case of welding a lens and a lens bracket of a headlight, the welding area can be on two edges.

[0059] Specifically, the number and shape of the contoured positioning blocks (203) are designed according to the appearance of the object to be welded and the welding area. For example, if the object to be welded is rectangular, there can be four contoured positioning blocks (203) distributed at the four corners of the positioning mounting plate (202) to ensure that the object to be welded is supported as evenly as possible.

[0060] Specifically, the top of the contoured positioning block (203) supports the object to be welded, and when the mold is closed, the lower end surface of the laser guide part (1) contacts the object to be welded, thereby clamping the object to be welded, thereby eliminating the need to manufacture a special welding fixture to clamp the object to be welded, thereby reducing manufacturing costs.

[0061] The present invention switches the light guide block in contact with the object to be welded to meet the welding requirements of products of different specifications in the same series. Moreover, products of different specifications in the same series do not require additional welding fixtures, which directly reduces the inventory management of welding fixtures, reduces the use of factory buildings, and improves the utilization rate of the company's workshop space.

[0062] Furthermore, the light guide block (102) comprises a light guide block inner plate (1021) and a light guide block outer plate (1022), and the light guide block inner plate (1021) is fixed inside the light guide block outer plate (1022);

[0063] A vertical light guide groove (1023) is formed between the outer side wall of the light guide block inner plate (1021) and the inner side wall of the light guide block outer plate (102);

[0064] The inner plate (1021) of the light guide block is provided with a laser reflection surface (1024) facing the emission port of the laser (1011) above the light guide groove (1023); the laser light emitted by the laser (1011) enters the light guide groove (1023) after being reflected by the laser reflection surface (1024); and the light guide groove (1023) guides the laser light into the to-be-welded area of ​​the to-be-welded object.

[0065] For example, a laser emits a horizontal laser to the laser reflection surface (1024), which is reflected to the light guide groove (1023). The light guide groove (1023) guides the laser from top to bottom to the area to be welded, thereby achieving welding of the object to be welded. The structure is simple. For the same series of different specifications, if the size of the object to be welded is larger, the distance between the areas to be welded should be larger, and the outer size of the inner plate (1021) of the light guide block and the inner size of the outer plate (1022) of the light guide block may be different. Figure 7 and Fig. 9 As shown, the laser guides (1) corresponding to two objects of the same series but different specifications. Figure 7 and Fig. 9 In the embodiment, the size and structure of the laser mounting plate (101) remain unchanged, and the laser mounting position remains unchanged. Figure 7 The distance between the light guide grooves on the left and right sides is relative to Fig. 9 The spacing should be small. Figure 7 Welding objects with smaller specifications. Fig. 9 For welding objects with larger specifications, since the position of the laser remains unchanged, the size of the laser mounting plate (101) remains unchanged, and the spacing of the light guide grooves is different, Figure 7 The optical path from the laser emission of the laser to the laser reflection surface (1024) is longer. Fig. 9 The optical path from the laser emission of the laser to the laser reflection surface (1024) should be shorter to adapt to products of different specifications. For the object support part (2), if products of different specifications are suitable for sharing, there is no need to replace it.

[0066] Specifically, after the molds are closed, the lower end surfaces of the light guide block inner plate (1021) and the light guide block outer plate (1022) are used together to clamp the object to be welded (6).

[0067] Furthermore, the object support portion (2) further comprises a position adjustment block (204) fixed on the mold base plate (201);

[0068] The position adjustment block (204) adjusts the position of the positioning installation plate (202) by means of bolts.

[0069] There may be multiple position adjustment blocks (204), which may correspond to the respective sides of the positioning installation plate (202). The position adjustment block (204) has a screw hole (2041), and the bolt passes through the screw hole (2041). Because the position adjustment block (204) is fixed on the mold base plate (201), the bolt is inserted deeper, and the side of the positioning installation plate (202) and the position adjustment block (204) are added. The depth adjustment of the bolts on the four sides can fine-tune the position of the positioning installation plate (202). In order to match with the upper laser guide (1), the area to be welded is positioned.

[0070] The positioning mounting plate (202) and the mold base plate (201) are fixed by screws. The positioning mounting plate (202) has a mounting hole (2021). The mounting hole (2021) can be set relatively large so that after the position of the positioning mounting plate (202) is finely adjusted as soon as possible, the screw hole of the mold base plate (201) can also be inserted. A gasket can be placed on the mounting hole (2021) to screw the positioning mounting plate (202) and the mold base plate (201).

[0071] Furthermore, a plurality of lasers (1011) are installed on each of the four side walls of the laser installation plate (101);

[0072] Four light guide grooves (1023) are formed between the four outer side walls of the light guide block inner plate (1021) and the four inner side walls of the light guide block outer plate (1022);

[0073] When the laser guide part (1) and the object support part (2) are molded together, each light guide groove (1023) guides the laser light emitted by the laser (1011) on the same side to the object to be welded.

[0074] Lasers are arranged on four sides, so that the four sides of the object to be welded can be welded together.

[0075] Furthermore, the inner plate (1021) of the light guide block is provided with a receiving groove (1025);

[0076] The laser guide part (1) and the object support part (2) clamp the object to be welded when the mold is closed, and the receiving groove (1025) faces the non-to-be-welded area of ​​the object to be welded.

[0077] The specific situation is made according to the specific needs. The object to be welded cannot be a flat object. The surrounding welding area can be low, and the non-welding area in the middle may have an upward protruding part. A receiving groove (1025) is provided to accommodate the protruding part.

[0078] In addition, the laser mounting plate (101) has a first through hole (1012), and the light guide block inner plate (1021) has a second through hole (1026). The first through hole (1012) and the second through hole (1026) are connected up and down, and the second through hole (1026) is also connected to the bottom of the accommodating groove (1025), so that the worker can observe the positioning of the object to be welded.

[0079] See also Figure 5 The present invention provides a laser welding device suitable for products of the same series and multiple specifications, comprising a laser welding mold (3) and a mold as described above, wherein the laser welding mold (3) comprises:

[0080] Mold upper plate (301);

[0081] A mold lower plate (302) for fixing the object support portion (2) of the mold;

[0082] A mold upper support plate (303), wherein the lower end surface of the mold upper support plate (303) is fixedly connected to the laser guide portion (1) of the mold, and the upper end surface of the mold upper support plate (303) is fixedly connected to the mold upper plate (301);

[0083] The telescopic limiting shaft (304) is arranged between the mold upper plate (301) and the mold lower plate (302), and the distance between the mold upper plate (301) and the mold lower plate (302) is adjusted by telescoping, thereby realizing the mold closing and mold separation of the laser guide part (1) and the object support part (2).

[0084] In the prior art, one object to be welded corresponds to one laser welding mold (3), or multiple parts of the laser welding mold (3) need to be replaced. However, according to the technical solution of the present invention, there is an object support part (2) to support and position the object to be welded, and the telescopic limit shaft (304) can be used to telescope to achieve mold closing. For objects to be welded of the same series but different specifications, the difference may be in size. If the size is different, the welding area is different, and the light guide position of the laser guide part (1) is different. Therefore, only the laser guide part (1) needs to be replaced, and the other parts of the same series of products with different specifications can be shared by a set of laser welding molds (3), thereby reducing costs and avoiding waste of resources. Or sometimes, the object support part (2) is also replaced as needed. Only the laser guide part (1) or only the laser guide part (1) and the object support part (2) need to be replaced.

[0085] Specifically, the mold upper support plate (303) is connected to the mold upper plate (301) via a plurality of connecting columns (305).

[0086] See also Figure 4 Furthermore, the laser welding device also includes a laser welding frame (4), and the laser welding frame (4) includes:

[0087] From top to bottom, a welding frame upper plate (401), a welding frame middle plate (402) and a welding frame lower plate (403);

[0088] A linear guide column (404) passes through the welding frame middle plate (402) and is fixed between the welding frame upper plate (401) and the welding frame lower plate (403);

[0089] The mold frame lifting cylinder (405) is fixed on the lower plate (403) of the welding frame, and the end of the piston rod of the mold frame lifting cylinder (405) is fixed on the middle plate (402) of the welding frame;

[0090] The welding frame upper plate (401) and the mold upper plate (301) are fixedly connected;

[0091] The welding frame middle plate (402) and the mold lower plate (302) are fixedly connected;

[0092] The piston rod of the mold frame lifting cylinder (405) is telescopically driven to lift the welding frame middle plate (402) along the linear guide column (404).

[0093] Furthermore, the mold upper plate (301) is provided with a buffer (3011);

[0094] The mold lower plate (302) is provided with a buffer limiting column (3021) corresponding to the buffer (3011) above and below.

[0095] The height of the buffer limit column (3021) is adjustable, and the purpose of cooperating with the buffer (3011) is to provide a buffer for the object support part (2) and the laser guide part (1) when the mold is closed, so as to avoid damage to the parts to be welded.

[0096] Specifically, the buffer (3011) is a spring.

[0097] The upper end of the telescopic limit shaft (304) is fixed to the upper plate (301) of the mold, and the lower end is fixed to the lower plate (302) of the mold, and can be telescopic. The telescopic limit shaft (304) is provided with a limit portion. When the frame lifting cylinder (405) drives the welding frame middle plate (402) to rise, the mold lower plate (302) also rises accordingly, and the telescopic limit shaft (304) contracts and stops contracting at the limit block. At this time, the mold is closed. However, when the mold is about to be closed, if the buffer limit column (3021) and the buffer (3011) are not provided, there is no buffer, and the object to be welded is clamped when the mold is directly closed, which may cause damage to the laser guide part, the object to be welded, and the object support plate. In addition, the mold closing speed is too fast over time, which will affect the mold closing accuracy. Therefore, a buffer and a buffer limit column (3021) are provided. When the mold lower plate (302) rises, the upper end of the buffer limit column (3021) first contacts the spring and is gradually compressed, the mold closing speed is slowed down, and the mold is finally closed to avoid damage to parts and reduce the negative impact on the mold closing accuracy.

[0098] Specifically, the mold lower plate (302) is provided with a plug-in pin (3022) for accurate positioning with the welding frame middle plate (402) before being fixedly connected.

[0099] Furthermore, the mold lower plate (302) is also provided with a roller seat (3023), and the roller seat (3023) is provided with a roller, and the laser welding mold (3) is conveniently pushed into the welding frame middle plate (402) of the laser welding frame (4) through the roller.

[0100] See also Figure 1-3 , further, the laser welding device also includes a device body (5);

[0101] The device body (5) has a mounting frame (501) inside for mounting the laser welding frame (4);

[0102] The front side of the device body (5) includes a switch door (502).

[0103] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A jig for laser welding of products, characterized in that: The invention comprises a laser guide part (1) and an object support part (2), wherein the laser guide part (1) comprises a relatively fixed laser mounting plate (101) and a light guide block (102), and the object support part (2) comprises a mold base plate (201), a positioning mounting plate (202) and a contour positioning block (203) which are arranged in sequence from bottom to top; The contoured positioning block (203) is used to position and support the object to be welded. The laser mounting plate (101) is mounted with a laser (1011). When the laser guide part (1) and the object support part (2) are molded together, the laser light emitted by the laser (1011) can be emitted to the to-be-welded area of ​​the to-be-welded object after being guided by the light guide block (102).

2. A mold according to claim 1, characterized in that: The light guide block (102) comprises a light guide block inner plate (1021) and a light guide block outer plate (1022), wherein the light guide block inner plate (1021) is fixed inside the light guide block outer plate (1022); A vertical light guide groove (1023) is formed between the outer side wall of the light guide block inner plate (1021) and the inner side wall of the light guide block outer plate (102); The inner plate (1021) of the light guide block is provided with a laser reflection surface (1024) facing the emission port of the laser (1011) above the light guide groove (1023); the laser light emitted by the laser (1011) enters the light guide groove (1023) after being reflected by the laser reflection surface (1024); and the light guide groove (1023) guides the laser light into the to-be-welded portion of the to-be-welded object.

3. A mold according to claim 1, characterized in that: The object support portion (2) further comprises a position adjustment block (204) fixed on the mold base plate (201); The position adjustment block (204) adjusts the position of the positioning mounting plate (202) by means of bolts.

4. A mold as claimed in claim 2, characterized in that: A plurality of lasers (1011) are installed on each of the four side walls of the laser installation plate (101); Four light guide grooves (1023) are formed between the four outer side walls of the light guide block inner plate (1021) and the four inner side walls of the light guide block outer plate (1022); When the laser guide part (1) and the object support part (2) are molded together, each of the light guide grooves (1023) guides the laser light emitted by the laser (1011) on the same side to the object to be welded.

5. A mold according to claim 1, characterized in that: The light guide block inner plate (1021) is provided with a receiving groove (1025); The laser guide part (1) and the object support part (2) clamp the object to be welded when they are molded together, and the receiving groove (1025) faces the non-to-be-welded area of ​​the object to be welded.

6. A laser welding device suitable for products of multiple specifications in the same series, characterized in that: The invention comprises a laser welding mold (3) and a mold according to any one of claims 1 to 5, wherein the laser welding mold (3) comprises: Mold upper plate (301); A mold lower plate (302) for fixing the object support portion (2) of the mold; A mold upper support plate (303), wherein the lower end surface of the mold upper support plate (303) is fixedly connected to the laser guide portion (1) of the mold, and the upper end surface of the mold upper support plate (303) is fixedly connected to the mold upper plate (301); A telescopic limit shaft (304) is arranged between the mold upper plate (301) and the mold lower plate (302), and adjusts the distance between the mold upper plate (301) and the mold lower plate (302) by telescoping, thereby realizing the mold closing and mold separation of the laser guide part (1) and the object support part (2).

7. A laser welding device suitable for products of multiple specifications in the same series as claimed in claim 6, characterized in that: The mold upper plate (301) is provided with a buffer (3011); The mold lower plate (302) is provided with buffer limiting columns (3021) corresponding to the buffer (3011) above and below.

8. A laser welding device suitable for products of multiple specifications in the same series as claimed in claim 6, characterized in that: The mold lower plate (302) is also provided with a roller seat, and the roller seat is provided with a roller.

9. A laser welding device suitable for products of multiple specifications in the same series as claimed in claim 6, characterized in that: The laser welding device further comprises a laser welding frame (4), wherein the laser welding frame (4) comprises: From top to bottom, a welding frame upper plate (401), a welding frame middle plate (402) and a welding frame lower plate (403); A linear guide column (404) passes through the welding frame middle plate (402) and is fixed between the welding frame upper plate (401) and the welding frame lower plate (403); A mold frame lifting cylinder (405) is fixed on the lower plate (403) of the welding frame, and the end of the piston rod of the mold frame lifting cylinder (405) is fixed on the middle plate (402) of the welding frame; The welding frame upper plate (401) and the mold upper plate (301) are fixedly connected; The welding frame middle plate (402) and the mold lower plate (302) are fixedly connected; The extension and retraction of the piston rod of the mold frame lifting cylinder (405) drives the welding frame middle plate (402) to rise and fall along the linear guide column (404).

10. A laser welding device applicable to products of multiple specifications in the same series as claimed in claim 9, characterized in that: The laser welding device also includes a device body (5); The device body (5) has a mounting frame (501) inside, which is used to mount the laser welding frame (4); The front side of the device body (5) includes a switch door (502).

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