Mold for blade connecting rod in-mold injection molding assembly

Abstract

The invention relates to a blade connecting rod in-mold injection molding assembly mold which comprises a movable mold insert located on a movable mold, a blade and a connecting rod are formed on the movable mold insert, a clamping block is formed on the formed blade, a plurality of buckle holes are formed in the formed connecting rod, a rotating block is arranged on the movable mold insert, and the formed connecting rod is located above the rotating block. And a power source is arranged on the movable mold and drives the rotating block to rotate, the formed connecting rod synchronously rotates along with the rotating block until the connecting rod makes contact with the blade and the clamping block penetrates through the buckling hole, and assembling of the connecting rod and the blade is completed. The blade and the connecting rod can be simultaneously formed on the movable mold insert at one time, meanwhile, the rotating block drives the connecting rod to rotate, the clamping block penetrates through the buckling hole, assembling between the connecting rod and the blade is completed, injection molding and assembling of the connecting rod and the blade are completed at the same time through one mold, the production cost is greatly saved, manual participation is reduced, and assembling is stable and efficient; and the occupied space and time are saved.

Description

Technical Field

[0001] The present invention relates to a mold for in-mold injection molding and assembly of a blade connecting rod, belonging to the technical field of injection molds. Background Art

[0002] A blade connecting rod is a mechanical structure that enables multiple blades to move synchronously through a connecting rod, and is widely used in fields such as automobiles, wind power, ships, and aerospace. Its core functions are to transmit power and coordinate movement to ensure that the blades rotate or adjust angles along a preset trajectory. Usually, the production of a blade connecting rod requires two sets of molds to respectively injection-mold the connecting rod and multiple blades. After the molded connecting rod and blades are demolded, the connecting rod and blades are manually assembled. However, manual assembly is slow, inefficient, and has a high labor cost. At the same time, the production cost of the two sets of molds is high, and they occupy a large space. Summary of the Invention

[0003] The purpose of the present invention is to provide a mold for in-mold injection molding and assembly of a blade connecting rod that saves production costs and has stable and efficient assembly, aiming at the shortcomings of the existing technology.

[0004] The technical solution adopted by the present invention to achieve the purpose is as follows: A mold for in-mold injection molding and assembly of a blade connecting rod includes a movable mold insert on the movable mold. The movable mold insert is formed with blades and a connecting rod. After molding, a clamping block is formed on the blade, and a plurality of buckling holes are formed on the connecting rod. A rotating block is provided on the movable mold insert. After molding, the connecting rod is located above the rotating block. A power source is provided on the movable mold, and the power source drives the rotating block to rotate. After molding, the connecting rod rotates synchronously with the rotating block until the connecting rod contacts the blade and the clamping block passes through the buckling hole to complete the assembly of the connecting rod and the blade.

[0005] As a further optimization of the above technical solution: There are two sets of the power sources, and the two sets of power sources are respectively located on both sides of the movable mold insert. Each set of the power sources includes an oil cylinder, a rack, and a gear. The two gears are respectively fixed at both ends of the rotating block. The rack is slidably arranged on the movable mold. The gear is located above the rack and meshes with the rack. The oil cylinder is fixed on the movable mold, and the piston rod of the oil cylinder is connected to the rack. The oil cylinder drives the rack to move, causing the gear and the rotating block to rotate.

[0006] As a further optimization of the above technical solution: A plurality of first convex blocks are provided at the end of the rotating block, and a first forming groove is formed on the first convex block. A plurality of second convex blocks are provided on the movable mold insert, and a second forming groove is formed on the second convex block. The second convex block is located between two adjacent first convex blocks. The first forming groove and the second forming groove together form a core for forming part of the connecting rod.

[0007] As a further optimization of the above technical solution: a number of ejector rods are provided on the ejector plate of the moving mold, a top block is provided at the top of the ejector rod, a number of top block grooves are formed on the moving mold insert, a ejector rod hole for the ejector rod to pass through is formed at the bottom of the top block groove, a third forming groove is formed at the top of the top block, and the core for forming part of the blade is jointly formed by the groove walls of the third forming groove and the top block groove.

[0008] As a further optimization of the above technical solution: after the assembly of the connecting rod and the blade is completed, the power source drives the rotating block to rotate and reset, so that the rotating block disengages from the connecting rod, the ejector plate drives the ejector rod and the top block to move upward, and the top block ejects the assembled blade and connecting rod out of the moving mold insert.

[0009] As a further optimization of the above technical solution: a sliding groove is formed on the moving mold insert, a fixed block is installed in the sliding groove, a protruding pressing block is provided at the top of the side of the fixed block, the rack is slidably arranged in the sliding groove, a convex strip is provided on the side of the rack, and the pressing block is located above the convex strip and contacts the convex strip.

[0010] As a further optimization of the above technical solution: a guiding inclined surface is formed on the side of the clamping block, the bottom of the clamping block is connected to the main body of the blade through a connecting column, a positioning step is formed between the clamping block and the connecting column, the diameter of the positioning step is larger than the diameter of the buckling hole, long strip-shaped movable holes are connected to both sides of the buckling hole, the width of the movable hole is smaller than the diameter of the buckling hole, and a number of arc-shaped protrusions are provided on the connecting rod, and the arc-shaped protrusions are located on both sides of the buckling hole.

[0011] Compared with the prior art, the present invention can simultaneously form the blade and the connecting rod at one time, and at the same time drive the connecting rod to rotate through the rotating block, so that the clamping block passes through the buckling hole to complete the automatic assembly between the connecting rod and the blade. One set of molds simultaneously completes the injection molding and assembly of the connecting rod and the blade, greatly saving the production cost, reducing the participation of labor, with stable and efficient assembly, saving the occupied space and time; when the rotating block drives the connecting rod to rotate, the connecting rod is separated from the second forming groove. After the connecting rod and the blade are assembled, the rotating block rotates and resets and disengages from the connecting rod, realizing the two-stage demolding of the connecting rod, preventing the connecting rod from sticking to the moving mold insert or the rotating block, and ensuring the smooth demolding of the connecting rod; the ejector plate drives the ejector rod and the top block to move upward, and the top block ejects the assembled blade and connecting rod out of the moving mold insert to complete the overall demolding of the blade connecting rod; the pulling force of the oil cylinder is converted into the rotation of the rotating block through the rack and the gear, and the transmission is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0013] Figure 2 It is an exploded structural schematic diagram of part of the structure of the present invention.

[0014] Figure 3 It is a three-dimensional structural schematic diagram after the blade and the connecting rod in the present invention are assembled.

[0015] Figure 4 It is Figure 3 An enlarged structural schematic diagram of part A in Specific implementation manner

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners. As Figures 1-4 shown, a mold for in-mold injection molding and assembly of a blade connecting rod includes a moving mold insert 2 on a moving mold 1. A blade 8 and a connecting rod 7 are formed on the moving mold insert 2. A clamping block 81 is formed on the formed blade 8, and a plurality of buckling holes 71 are formed on the formed connecting rod 7. A rotating block 3 is provided on the moving mold insert 2, and the formed connecting rod 7 is located above the rotating block 3. A power source is provided on the moving mold 1. After the moving and fixed molds are separated, the power source drives the rotating block 3 to rotate. After the formed connecting rod 7 rotates 180° synchronously with the rotating block 3, the connecting rod 7 contacts the blade 8 and the clamping block 81 just passes through the buckling holes 71 to complete the assembly of the connecting rod 7 and the blade 8.

[0017] In the above technical solution: a plurality of first convex blocks 31 are formed at the end of the rotating block 3, a first forming groove 32 is formed on the first convex block 31, a plurality of second convex blocks 21 are formed on the moving mold insert 2, a second forming groove 22 is formed on the second convex block 21, the second convex block 21 is located between two adjacent first convex blocks 31, and the first forming groove 32 and the second forming groove 22 together form a core for forming part of the connecting rod 7.

[0018] In the above technical solution: a plurality of ejector rods 11 are provided on the ejector plate 9 of the moving mold 1, an ejector block 12 is provided at the top of the ejector rod 11, a plurality of ejector block grooves 23 are formed on the moving mold insert 2, and an ejector rod hole for the ejector rod 11 to pass through is formed at the bottom of the ejector block groove 23. A third forming groove 121 is formed at the top of the ejector block 12, and the third forming groove 121 and the groove wall of the ejector block groove 23 together form a core for forming part of the blade 8. After the assembly of the connecting rod 7 and the blade 8 is completed, the power source drives the rotating block 3 to rotate 180° to reset, so that the rotating block 3 is separated from the connecting rod 7. The ejector plate 9 drives the ejector rod 11 and the ejector block 12 to move upward, and the ejector block 12 ejects the assembled blade 8 and connecting rod 7 out of the moving mold insert 2. At the same time, the reset rotating block 3 waits for the second production.

[0019] In the above technical solution: there are two groups of power sources, which are respectively located on both sides of the movable mold insert 2. Both groups of power sources include a cylinder 4, a rack 5 and a gear 6. The two gears 6 are respectively fixed at both ends of the rotating block 3. The rack 5 is slidably arranged on the movable mold 1. The gear 6 is located above the rack 5 and meshes with the rack 5. The cylinder 4 is fixed on the movable mold 1, and the piston rod of the cylinder 4 is connected to the rack 5. The cylinder 4 drives the rack 5 to move, so that the gear 6 and the rotating block 3 rotate.

[0020] In the above technical solution: a slide groove 24 is formed on the movable mold insert 2, a fixed block 25 is installed in the slide groove 24, a protruding pressing block 251 is provided on the top of the side of the fixed block 25, the rack 5 is slidably arranged in the slide groove 24, a convex strip 51 is provided on the side of the rack 5, and the pressing block 251 is located above the convex strip 51 and contacts the convex strip 51. The pressing block 251 cooperates with the convex strip 51 to guide the movement of the rack 5 and prevent the rack 5 from leaving the slide groove 24 during the movement.

[0021] In the above technical solution: Figure 3 , 4 As shown, the side of the block 81 is formed with a guide slope 82, and the bottom of the block 81 is connected to the main body of the blade 8 through a connecting column 83. A positioning step is formed between the block 81 and the connecting column 83, and the diameter of the positioning step is greater than the diameter of the button hole 71. The two sides of the button hole 71 are connected with long strip-shaped movable holes 72, and the width of the movable hole 72 is less than the diameter of the button hole 71. When the block 81 passes through the button hole 71, the button hole 71 undergoes elastic deformation, the movable hole 72 assists the deformation of the button hole 71, and the guide slope 82 guides the assembly process; when the block 81 passes through the button hole 71, the connecting column 83 is located in the button hole 71, and the button hole 71 is deformed and reset; when the rotating block 3 rotates and resets and drives the connecting rod 7 to move upward, the top surface of the button hole 71 contacts the bottom surface of the block 81, preventing the connecting rod 7 from detaching from the blade 8, thereby detaching the connecting rod 7 from the rotating block 3. The connecting rod 7 is provided with a plurality of arc-shaped protrusions 73, which are located on both sides of the button hole 71. The arc-shaped protrusions 73 reserve sufficient space for the arrangement of the button hole 71, enhance the strength of the side of the button hole 71, and prevent the deformation of the button hole 71 from causing the connecting rod 7 to break.

[0022] The present invention can simultaneously form the blade 8 and the connecting rod 7 at one time. Meanwhile, the connecting rod 7 is driven to rotate by the rotating block 3, so that the clamping block 81 passes through the buckling hole 71 to complete the automatic assembly between the connecting rod 7 and the blade 8. An injection mold can simultaneously complete the injection molding and assembly of the connecting rod 7 and the blade 8, greatly saving the production cost, reducing the manual participation, ensuring stable and efficient assembly, and saving the occupied space and time. When the rotating block 3 drives the connecting rod 7 to rotate, the connecting rod 7 is separated from the second molding groove 22. After the connecting rod 7 and the blade 8 are assembled, the rotating block 3 rotates and resets and disengages from the connecting rod 7, realizing the two-stage demolding of the connecting rod 7 to prevent the connecting rod 7 from sticking to the moving die insert 2 or the rotating block 3, ensuring smooth demolding of the connecting rod 7. The ejector plate 9 drives the ejector rod 11 and the ejector block 12 to move upward, and the ejector block 12 ejects the assembled blade 8 and connecting rod 7 out of the moving die insert 2 to complete the overall demolding of the blade connecting rod. The pulling force of the oil cylinder 4 is converted into the rotation of the rotating block 3 through the rack 5 and the gear 6, and the transmission is stable.

[0023] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall fall within the protection scope of the present invention.

Claims

1. A mold for in-mold injection molding and assembly of a blade connecting rod, including a movable mold insert (2) located on a movable mold (1). A blade (8) and a connecting rod (7) are formed on the movable mold insert (2). After molding, a clamping block (81) is formed on the blade (8), and a plurality of buckling holes (71) are formed on the connecting rod (7). It is characterized in that A rotating block (3) is provided on the moving die insert (2). After forming, the connecting rod (7) is located above the rotating block (3). A power source is provided on the moving die (1), and the power source drives the rotating block (3) to rotate. After forming, the connecting rod (7) rotates synchronously with the rotating block (3) until the connecting rod (7) contacts the blade (8) and the latch (81) passes through the buckle hole (71), completing the assembly of the connecting rod (7) and the blade (8).

2. The mold for in-mold injection molding and assembly of a blade connecting rod according to claim 1, characterized in that There are two sets of the power sources, and the two sets of power sources are respectively located on both sides of the moving die insert (2). The two sets of power sources both include an oil cylinder (4), a rack (5) and a gear (6). The two gears (6) are respectively fixed at both ends of the rotating block (3). The rack (5) is slidably arranged on the moving die (1). The gear (6) is located above the rack (5) and meshes with the rack (5). The oil cylinder (4) is fixed on the moving die (1). The piston rod of the oil cylinder (4) is connected to the rack (5). The oil cylinder (4) drives the rack (5) to move, causing the gear (6) and the rotating block (3) to rotate.

3. The mold for in-mold injection molding and assembly of a blade connecting rod according to claim 1, characterized in that A plurality of first convex blocks (31) are provided at the end of the rotating block (3). A first forming groove (32) is formed on the first convex block (31). A number of second convex blocks (21) are provided on the moving die insert (2). A second forming groove (22) is formed on the second convex block (21). The second convex block (21) is located between two adjacent first convex blocks (31). The first forming groove (32) and the second forming groove (22) together form a core for forming part of the connecting rod (7).

4. The mold for in-mold injection molding and assembly of blade connecting rods according to claim 3, characterized in that A number of ejector rods (11) are provided on the ejector plate (9) of the moving die (1). A top block (12) is provided at the top of the ejector rod (11). A number of top block grooves (23) are formed on the moving die insert (2). A ejector rod hole for the ejector rod (11) to pass through is formed at the bottom of the top block groove (23). A third forming groove (121) is formed at the top of the top block (12). The third forming groove (121) and the groove wall of the top block groove (23) together form a core for forming part of the blade (8). After the assembly of the connecting rod (7) and the blade (8) is completed, the power source drives the rotating block (3) to rotate and reset, so that the rotating block (3) disengages from the connecting rod (7). The ejector plate (9) drives the ejector rod (11) and the top block (12) to move upward, and the top block (12) ejects the assembled blade (8) and connecting rod (7) out of the moving die insert (2).

5. The mold for in-mold injection molding and assembly of a blade connecting rod according to claim 2, characterized in that A sliding groove (24) is formed on the moving die insert (2). A fixing block (25) is installed in the sliding groove (24). A protruding pressing block (251) is provided at the top of the side of the fixing block (25). The rack (5) is slidably arranged in the sliding groove (24). A rib (51) is provided on the side of the rack (5). The pressing block (251) is located above the rib (51) and contacts the rib (51).

6. The mold for in-mold injection assembly of a blade connecting rod according to claim 1, characterized in that The side surface of the clamping block (81) is provided with a guiding inclined surface (82). The bottom of the clamping block (81) is connected to the main body of the blade (8) through a connecting column (83). A positioning step is formed between the clamping block (81) and the connecting column (83). The diameter of the positioning step is larger than the diameter of the buckling hole (71). Long strip-shaped movable holes (72) are connected to both sides of the buckling hole (71). The width of the movable hole (72) is smaller than the diameter of the buckling hole (71). A plurality of arc-shaped protrusions (73) are arranged on the connecting rod (7), and the arc-shaped protrusions (73) are located on both sides of the buckling hole (71).

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