In-mold laser welding structure

Abstract

An in-die laser welding structure comprises an upper die base, a lower die base, a discharging plate and a material belt, the upper die base and the discharging plate are fixedly connected through a connecting plate, a fixing plate is arranged at the upper end of the lower die base, a laser welding head is obliquely arranged in the fixing plate, the material belt is fixedly arranged at the upper end of the fixing plate, the upper die base comprises a male die, and a female die is fixedly arranged in the fixing plate. The upper die base drives the male die to punch a material belt, a product is punched from the material belt into the female die, a welding groove is formed in the product, the laser welding head is aligned with the welding groove to weld the product, the laser welding head is arranged in the lower die base, laser welding is directly completed before discharging after the lower die base completes punching, and high precision and consistency of the welded product are guaranteed. A laser welding head is obliquely arranged in the fixing plate, so that the welding space is sufficient, and heat accumulation can be prevented from affecting the welding effect; and the original clamping station and the original welding station are omitted, so that the production cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of in-mold welding, and in particular to an in-mold laser welding structure. Background Technology

[0002] Currently, existing molds for stamped parts have the following drawbacks: 1. After stamping the parts, a significant amount of manpower and resources are required for secondary clamping and welding. This results in high production costs and poor product precision and consistency. 2. Some products have small sheet sizes, making it impossible to design snap-fit ​​points on the product. 3. Using dispensing methods can easily lead to glue overflow. 4. Some products require very high core heights, making it difficult to guarantee the perpendicularity, parallelism, and other dimensional tolerances using snap-fit ​​points. This is especially true for T-shaped sheet products with a height exceeding 60mm, where snap-fit ​​points are extremely difficult to implement. Therefore, it is hoped that an in-mold laser welding mechanism can be invented to simultaneously complete the welding of the parts during continuous stamping, resulting in a complete core when the product exits the mold. Currently, the demand for motor cores is very high in fields such as T-shaped servo motors, humanoid robots, new energy, and industrial automation. Motors used in these fields often have very high requirements for height and tolerance precision. Therefore, it is hoped that a high-efficiency, high-precision in-mold welding mechanism can be invented to achieve mass production of motor cores. Utility Model Content

[0003] To address the shortcomings and defects of existing technologies, an in-mold laser welding structure is provided. To improve welding efficiency and precision, this utility model offers the following technical solutions.

[0004] An in-mold laser welding structure includes an upper mold base, a lower mold base, a stripper plate, and a strip. The upper mold base and the stripper plate are fixedly connected by a connecting plate. A fixing plate is provided at the upper end of the lower mold base, and a laser welding head is inclinedly arranged inside the fixing plate. The strip is fixedly arranged at the upper end of the fixing plate. The upper mold base includes a punch, and a die is fixedly arranged inside the fixing plate. The upper mold base drives the punch to punch the strip, and the product is punched out from the strip into the die. The product is provided with a welding groove, and the laser welding head is aligned with the welding groove to weld the product.

[0005] Compared with existing technologies, this utility model has a laser welding head installed in the lower die base, which allows for laser welding to be completed directly before material ejection after stamping in the lower die base, ensuring high precision and consistency of the welded product. The laser welding head is inclinedly installed in the fixed plate, which provides sufficient space for welding and prevents excessive crowding during welding, which could lead to heat accumulation and affect the welding effect. Furthermore, the inclined installation of the laser welding head facilitates welding and improves the welding effect. The efficiency of in-mold welding depends entirely on the stamping speed of the press, eliminating the need for the original clamping and welding stations and greatly reducing production costs.

[0006] Furthermore, the lower mold base is provided with a mounting groove, and an adjusting pad is provided in the mounting groove. The upper end of the adjusting pad is provided with an inclined surface, which is set in a direction away from the product. The cavity mold is provided with an insertion hole, which is inclined and has the same inclination angle as the inclined surface. One end of the laser welding head is inserted and fitted in the insertion hole, and the other end is slidably set on the inclined surface.

[0007] Through the above improvements, an adjustment pad is provided at the lower end of the laser welding head. The adjustment pad has an inclined surface. By sliding the laser welding head on the inclined surface, the distance between the laser welding head and the product can be adjusted, thereby improving the welding effect of the product.

[0008] Furthermore, a locking ring is provided inside the lower mold base, the upper end of the locking ring abuts against the lower end of the cavity mold, and a first locking block, a second locking block, a third locking block and a fourth locking block are provided inside the locking ring. One side of the first locking block, the second locking block, the third locking block and the fourth locking block abuts against the product, and the other side abuts against the locking ring.

[0009] Through the above improvements, a locking ring is provided in the lower mold base. The upper end of the locking ring abuts against the lower end of the die cavity, so that the product can directly enter the locking ring after falling into the die cavity. The locking components include a first locking block, a second locking block, a third locking block, and a fourth locking block. The first locking block, the second locking block, the third locking block, and the fourth locking block can lock the product, which can better restrict the direction of the product's ejection and ensure the welding effect during welding.

[0010] Furthermore, a conveyor belt is provided at the lower end of the lower mold base, and the conveyor belt feeds the product from the concave mold into the locking ring.

[0011] With the above improvements, a conveyor belt is installed at the lower end of the lower die holder. The conveyor belt can send the punched products from the die cavity into the locking ring, which can prevent the products from piling up and improve work efficiency.

[0012] Furthermore, a punch is provided inside the punch, and an elastic element is provided at one end of the punch near the upper die base. The elastic element is fixedly disposed inside the upper die base. The length of the punch is greater than that of the punch. When the punch is raised, the lower end of the punch abuts against the product, and the laser welding head welds the product.

[0013] Through the above improvements, a punch is set inside the punch, and the length of the punch is higher than that of the punch. An elastic element is set at the upper end of the punch. During stamping, the punch and the punch press against the product. At this time, the elastic element is under pressure. When the punch returns upward after the punching is completed, the elastic element at the upper end of the punch returns, so that the punch still presses against the upper end of the product. When the laser welding head welds the product, it still applies a downward force to the product, so that the products fit together better.

[0014] Furthermore, the lower mold base is provided with an air blowing hole, and the locking member is provided with an air inlet groove facing the lower mold base, and the air inlet groove is connected to the air blowing hole.

[0015] With the above improvements, an air blowing hole is provided in the lower mold base, and an air inlet groove is provided in the locking part facing the lower mold base. Under the action of laser welding, the product will generate a lot of heat, which will prevent the mold parts from being damaged due to excessive temperature, thus achieving the cooling effect.

[0016] Furthermore, a stamping station is formed between the punch and the die, and the stamping station is arranged symmetrically with respect to the center position of the fixed plate. A embossing station is provided on one side of the stamping station.

[0017] The above improvements enable the punching of two sets of equally sized products in opposite directions on the conveyor belt, thereby improving product processing efficiency and conveyor belt utilization.

[0018] Furthermore, a plurality of cooling pipes are installed inside the lower die holder. The cooling pipes include a first cooling pipe and a second cooling pipe. The first cooling pipe and the second cooling pipe are respectively arranged on both sides of the stamping station and are arranged symmetrically with respect to the center of the stamping station.

[0019] Through the above improvements, several cooling pipes are installed in the lower mold base. The cooling pipes include a first cooling pipe and a second cooling pipe. The first cooling pipe and the second cooling pipe are respectively set on both sides of the stamping station and are arranged symmetrically with respect to the center of the stamping station, which can better cool the laser welding head and the mold. Attached Figure Description

[0020] Figure 1 This is a frontal cross-sectional view of an in-mold laser welding structure.

[0021] Figure 2This is a top-view structural diagram of an in-mold laser welding structure (excluding the upper mold base and stripper plate).

[0022] Figure 3 This is an internal cross-sectional view of an in-mold laser welding structure.

[0023] Figure 4 This is a magnified view of a portion A of an in-mold laser welding structure.

[0024] Figure 5 This is a schematic diagram showing the position of the laser welding head in an in-mold laser welding structure.

[0025] The components include: 1. Upper die base; 1.1 Connecting plate; 1.2 Punch; 1.3 Stamping rod; 1.4 Elastic element; 2. Lower die base; 2.1 Mounting groove; 2.2 Locking ring; 2.21 First locking block; 2.22 Second locking block; 2.23 Third locking block; 2.24 Fourth locking block; 2.3 Conveyor belt; 2.4 Air blowing hole; 2.5 Air inlet groove; 2.6 Cooling pipe; 2.61 First cooling pipe; 2.62 Second cooling pipe; 3. Unloading plate; 4. Material strip; 4.1 Product; 5. Fixing plate; 5.1 Die; 5.11 Insertion hole; 6. Laser welding head; 7. Adjusting pad; 7.1 Inclined surface; 8. Stamping station; 9. Embossing station. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] like Figures 1 to 5As shown, an in-mold laser welding structure includes an upper mold base 1, a lower mold base 2, a stripper plate 3, and a strip 4. The upper mold base 1 and the stripper plate 3 are fixedly connected by a connecting plate 1.1. A fixing plate 5 is provided at the upper end of the lower mold base 2. A laser welding head 6 is inclinedly arranged inside the fixing plate 5. The strip 4 is fixedly arranged at the upper end of the fixing plate 5. The upper mold base 1 includes a punch 1.2. A die 5.1 is fixedly arranged inside the fixing plate 5. The upper mold base 1 drives the punch 1.2 to punch the strip 4, punching a product 4.1 from the strip 4 into the die 5.1. The product 4.1 is provided with a welding groove. The laser welding head 6 is aligned with the welding groove to weld the product 4.1.

[0029] A stamping station 8 is formed between the punch 1.2 of the upper die holder 1 and the die 5.1 of the fixed plate 5. The stamping station 8 is arranged symmetrically with respect to the center position of the fixed plate 5, so that two sets of products 4.1 of equal size and opposite direction can be stamped out on the strip 4, which improves the processing efficiency of the product 4.1 and the utilization rate of the strip 4. A embossing station 9 is provided on one side of the stamping station 8. The embossing station 9 can prevent interference during stamping.

[0030] When the number of punched products 4.1 reaches the required quantity, the embossing mechanism will use the pull plate control to punch a 0.5mm high emboss on the lower surface of the next product 4.1. Such emboss can separate products 4.1 from each other, so that the laser welding head 6 cannot weld at this point, thereby achieving the separation of products 4.1 from each other.

[0031] A punch 1.3 is provided inside the punch 1.2, and the length of the punch 1.3 is higher than that of the punch 1.2. An elastic element 1.4 is provided at the upper end of the punch 1.3. The elastic element 1.4 is fixedly installed in the upper die base 1. During stamping, the punch 1.2 and the punch 1.3 abut against the product 4.1. At this time, the elastic element 1.4 is under pressure. During stamping, when the punch 1.2 returns upward after punching, the elastic element 1.4 at the upper end of the punch 1.3 returns, so that the punch 1.3 still abuts against the upper end of the product 4.1. When the laser welding head 6 welds the product 4.1, a downward force is still applied to the product 4.1, so that the products 4.1 fit together more closely.

[0032] The upper end of the lower mold base 2 is provided with a mounting groove 2.1, and an adjusting pad 7 is provided in the mounting groove 2.1. The upper end of the adjusting pad 7 is provided with an inclined surface 7.1, which is set away from the product 4.1. An insertion hole 5.11 is provided in the cavity mold 5.1. The insertion hole 5.11 is inclined and its inclination angle is consistent with that of the inclined surface 7.1. One end of the laser welding head 6 is inserted and fitted in the insertion hole 5.11, and the other end is slidably set on the inclined surface 7.1. By sliding the laser welding head 6 on the inclined surface 7.1, the distance between the laser welding head 6 and the product 4.1 can be adjusted, thereby improving the welding effect of the product 4.1.

[0033] A locking ring 2.2 is provided inside the lower mold base 2. The upper end of the locking ring 2.2 abuts against the lower end of the die 5.1, allowing the product 4.1 to directly enter the locking ring 2.2 after falling into the die 5.1. The locking ring 2.2 is provided with a first locking block 2.21, a second locking block 2.22, a third locking block 2.23, and a fourth locking block 2.24. One of the first locking blocks 2.21, the second locking block 2.22, the third locking block 2.23, and the fourth locking block 2.24... One side abuts against product 4.1, and the other side abuts against locking ring 2.2. The first locking block 2.21, the second locking block 2.22, the third locking block 2.23, and the fourth locking block 2.24 can lock product 4.1. The inner side of locking ring 2.2 abuts against the first locking block 2.21, the second locking block 2.22, the third locking block 2.23, and the fourth locking block 2.24, which can effectively limit the direction of product 4.1's ejection and ensure the welding effect during welding.

[0034] The lower mold base 2 is provided with an air blowing hole 2.4, and the locking part is provided with an air inlet groove 2.5 facing the lower mold base 2. The air inlet groove 2.5 is connected to the air blowing pipe. Under the action of laser welding, the product 4.1 will generate a lot of heat, which will prevent the mold parts from being damaged due to excessive temperature, so as to achieve the cooling effect.

[0035] The lower mold base 2 is equipped with several cooling pipes 2.6, including a first cooling pipe 2.61 and a second cooling pipe 2.62. The first cooling pipe 2.61 and the second cooling pipe 2.62 are respectively arranged on both sides of the stamping station 8, and are arranged symmetrically with respect to the center of the stamping station 8, which can better cool the laser welding head 6 and the mold.

[0036] The lower end of the lower die holder 2 is equipped with a conveyor belt 2.3, which can feed the punched product 4.1 from the die 5.1 into the locking ring 2.2, preventing the product 4.1 from accumulating and improving work efficiency.

[0037] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An in-mold laser welded structure, characterized by: The assembly includes an upper mold base (1), a lower mold base (2), a stripper plate (3), and a strip (4). The upper mold base (1) and the stripper plate (3) are fixedly connected by a connecting plate (1.1). A fixing plate (5) is provided at the upper end of the lower mold base (2). A laser welding head (6) is inclinedly provided in the fixing plate (5). The strip (4) is fixedly provided at the upper end of the fixing plate (5). The upper mold base (1) includes a punch (1.2). A die (5.1) is fixedly provided in the fixing plate (5). The upper mold base (1) drives the punch (1.2) to punch the strip (4). The product (4.1) is punched out from the strip (4) and into the die (5.1). The product (4.1) is provided with a welding groove. The laser welding head (6) is aligned with the welding groove to weld the product (4.1).

2. The in-mold laser welding structure according to claim 1, characterized in that: The lower mold base (2) is provided with a mounting groove (2.1), and an adjusting pad (7) is provided in the mounting groove (2.1). The upper end of the adjusting pad (7) is provided with an inclined surface (7.1), which is set away from the product (4.1). The die cavity (5.1) is provided with a plug hole (5.11), which is inclined and has the same inclination angle as the inclined surface (7.1). One end of the laser welding head (6) is inserted into the plug hole (5.11), and the other end is slidably set on the inclined surface (7.1).

3. An in-mold laser welded structure according to claim 1, wherein: A locking ring (2.2) is provided inside the lower mold base (2). The upper end of the locking ring (2.2) abuts against the lower end of the cavity mold (5.1). A first locking block (2.21), a second locking block (2.22), a third locking block (2.23), and a fourth locking block (2.24) are provided inside the locking ring (2.2). One side of the first locking block (2.21), the second locking block (2.22), the third locking block (2.23), and the fourth locking block (2.24) abuts against the product (4.1), and the other side abuts against the locking ring (2.2).

4. An in-mold laser welded structure according to claim 3, wherein: The lower end of the lower mold base (2) is provided with a conveyor belt (2.3), which feeds the product (4.1) from the die (5.1) into the locking ring (2.2).

5. An in-mold laser welded structure according to claim 1, wherein: A punch (1.3) is provided inside the punch (1.2). An elastic element (1.4) is provided at one end of the punch (1.3) near the upper die base (1). The elastic element (1.4) is fixedly provided inside the upper die base (1). The length of the punch (1.3) is greater than that of the punch (1.2). When the punch (1.2) is raised, the lower end of the punch (1.3) abuts against the product (4.1). The laser welding head (6) welds the product (4.1).

6. An in-mold laser welded structure according to claim 1, wherein: The lower mold base (2) is provided with an air blowing hole (2.4), and the die (5.1) is provided with an air inlet groove (2.5) facing the lower mold base (2), and the air inlet groove (2.5) is connected to the air blowing hole (2.4).

7. An in-mold laser welded structure according to claim 1, wherein: A stamping station (8) is formed between the punch (1.2) and the die (5.1). The stamping station (8) is arranged symmetrically with respect to the center position of the fixed plate (5). A embossing station (9) is provided on one side of the stamping station (8).

8. The in-mold laser welding structure according to claim 7, characterized in that: The lower die holder (2) is equipped with several cooling pipes (2.6). The cooling pipes (2.6) include a first cooling pipe (2.61) and a second cooling pipe (2.62). The first cooling pipe (2.61) and the second cooling pipe (2.62) are respectively arranged on both sides of the stamping station (8) and are arranged symmetrically with respect to the center of the stamping station (8).

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