An injection molding gate residue removal device

Abstract

The present invention discloses a device for removing residual injection molding gate, which relates to the technical field of injection molding processing. It includes an injection molding barrel, a piston installed in the injection molding barrel, and a piston rod connected to the piston and extending to the outside of the injection molding barrel. A guiding cylinder is provided on one side of the injection molding barrel away from the piston rod. The side of the guiding cylinder close to the injection molding barrel is slidably sleeved on the outer wall of the injection molding barrel. An injection molding head is slidably arranged inside the guiding cylinder on the side away from the injection molding barrel. A removal disc with a plurality of moving grooves is installed on the side of the guiding cylinder close to the injection molding head. A set of residual removal mechanisms are provided at each position of the moving grooves. A plurality of injection molding grooves corresponding to the positions of the moving grooves are opened on the injection molding head. When the guiding cylinder moves to the injection molding head, a channel for the injection molding liquid to flow can be formed by the inner wall of the guiding cylinder and the injection molding grooves on the injection molding head. The present invention can effectively remove the injection molding liquid remaining on the injection molding gate, so as to improve the product quality and processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding processing, and specifically relates to a device for removing injection gate residues. Background Art

[0002] During the injection molding process, injection gate residues refer to a part or all of the plastic residues formed in plastic products, usually appearing at the gates or nozzles of the products. The injection gate is the position where the injection plastic enters the mold cavity in the injection mold. It is connected to other parts of the product. When the injection molding is completed, the gate needs to be removed, but some residues will be left, thus affecting the quality of the product. And during the next injection molding, the previous gate position will also be blocked to a certain extent due to the residues from the previous time, which will have an impact. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a device for removing injection gate residues, which can effectively remove the injection liquid remaining on the injection gate to improve the product quality and processing efficiency.

[0004] To achieve the above object, the present invention provides the following technical solution: A device for removing injection gate residues, including an injection cylinder, a piston installed in the injection cylinder, and a piston rod connected to the piston and extending outside the injection cylinder. A guide cylinder is provided on one side of the injection cylinder away from the piston rod. The side of the guide cylinder close to the injection cylinder is slidably sleeved on the outer wall of the injection cylinder. An injection head is slidably arranged inside the guide cylinder on the side away from the injection cylinder.

[0005] An elimination disc with a plurality of moving grooves is installed on the side of the guide cylinder close to the injection head. A set of residue removal mechanisms is provided at each position of the moving grooves.

[0006] A plurality of injection grooves corresponding to the positions of the moving grooves are opened on the injection head. When the guide cylinder moves to the injection head, a channel for the injection liquid to flow can be formed by the inner wall of the guide cylinder and the injection grooves on the injection head.

[0007] Preferably, each set of the residue removal mechanisms includes a cleaning plate slidably installed in the moving groove. A spring rod is provided on the side of the cleaning plate away from the injection head. The top end of the spring rod extends outside the elimination disc and a first fixing member is installed at the top end position of the spring rod. A plurality of second fixing members are installed on the outer surface of the guide cylinder. An activity rod is provided between the first fixing member and the second fixing member. The two ends of the activity rod are respectively hinged to the first fixing member and the second fixing member.

[0008] Preferably, a threaded ring is provided on the outer surface of the side of the guide cylinder close to the injection cylinder. A threaded sleeve that is threadedly engaged with it is provided on the threaded ring. When the threaded sleeve rotates, it can move in the direction along the threaded ring. When the threaded sleeve gradually moves towards the elimination plate, the threaded sleeve continuously presses down the movable rod, causing the angle between the movable rod and the surface of the guide cylinder to gradually decrease, thereby driving the first fixing member to move downward and driving the spring rod to press down, causing the cleaning plate located in the moving groove to move downward until it closes the injection groove on the injection head.

[0009] Preferably, a push handle is installed on the side of the piston rod away from the injection cylinder. A receiving cover is provided on the side of the outer wall of the injection cylinder where the guide cylinder is sleeved. The push handle and the receiving cover are connected by a connecting rod. When the staff pushes the piston rod through the push handle, the guide cylinder can be driven to move towards the injection head through the connecting rod and the receiving cover, thereby forming a flow channel for the injection liquid to flow through between the inner wall of the guide cylinder and the injection groove on the injection head. After the injection is completed, rotate the threaded sleeve to make the cleaning plate close the injection groove, and pulling back the piston rod can drive the guide cylinder to move upward, so that the injection liquid in the injection groove can be recovered by the cleaning plate, avoiding the residue of the injection liquid.

[0010] Preferably, a hollow cavity for placing a heating rod is provided at the center of the injection head.

[0011] Preferably, the injection head is made of a heat-conducting material. When the heating rod works, the heat can be transferred to the injection groove through the heat-conducting injection head, so that the injection liquid remaining and fixed in the injection groove is heated and liquefied for easy recovery.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. In the present invention, the injection head is slidably arranged in the guide cylinder. When the guide cylinder moves towards the injection head, a channel for the injection liquid to flow can be formed by using the inner wall of the guide cylinder and the injection groove on the injection head, and quantitative circulation of the injection liquid is realized in cooperation with the residue removal mechanism.

[0014] 2. In the present invention, the side of the guide cylinder close to the injection cylinder is slidably sleeved on the outer wall of the injection cylinder. When the staff pushes the piston rod through the push handle, the guide cylinder can be driven to move towards the injection head through the connecting rod and the receiving cover, and at the same time, the injection liquid in the injection cylinder is discharged, forming a linkage effect and improving the convenience of the device.

[0015] 3. In the present invention, a hollow cavity for placing a heating rod is provided at the center of the injection head, and the injection head is made of a heat-conducting material. When the heating rod works, the heat can be transferred to the injection groove through the heat-conducting injection head, so that the injection liquid remaining and fixed in the injection groove is heated and liquefied for easy recovery. Description of the Drawings

[0016] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to specific embodiments in conjunction with the accompanying drawings.

[0017] Figure 1 Schematic diagram of the overall structure of the present invention;

[0018] Figure 2 Schematic diagram of the structure of the injection head, injection groove and hollow cavity in the present invention;

[0019] Figure 3 Front view of the present invention;

[0020] Figure 4 Cross-sectional view of the present invention;

[0021] Figure 5 Explosion schematic diagram of the thread sleeve, guide cylinder and injection head in the present invention.

[0022] In the figure: 1, injection cylinder; 2, piston; 3, piston rod; 4, guide cylinder; 41, thread ring; 5, injection head; 6, moving groove; 7, elimination plate; 8, residual removal mechanism; 81, cleaning plate; 82, spring rod; 83, first fixing member; 84, second fixing member; 85, movable rod; 9, injection groove; 10, thread sleeve; 11, push handle; 12, receiving cover; 13, connecting rod; 14, hollow cavity. Specific embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 , an injection gate residue removal device of the present invention, includes an injection cylinder 1, a piston 2 installed in the injection cylinder 1, and a piston rod 3 connected to the piston 2 and extending to the outside of the injection cylinder 1. A guide cylinder 4 is provided on one side of the injection cylinder 1 away from the piston rod 3. The side of the guide cylinder 4 close to the injection cylinder 1 is slidably sleeved on the outer wall of the injection cylinder 1. An injection head 5 is slidably arranged inside the guide cylinder 4 on the side away from the injection cylinder 1;

[0025] An elimination plate 7 provided with a plurality of moving grooves 6 is installed on the side of the guide cylinder 4 close to the injection head 5, and a set of residual removal mechanisms 8 are provided at each position of the moving groove 6;

[0026] The injection head 5 is provided with a plurality of injection grooves 9 corresponding to the positions of the moving grooves 6. When the guiding cylinder 4 moves to the injection head 5, a channel for the injection liquid to flow can be formed by the inner wall of the guiding cylinder 4 and the injection grooves 9 on the injection head 5.

[0027] Preferably, each set of residue removal mechanism 8 includes a cleaning plate 81 slidably installed in the moving groove 6. A spring rod 82 is provided on the side of the cleaning plate 81 away from the injection head 5. The top end of the spring rod 82 extends to the outside of the elimination disc 7, and a first fixing member 83 is installed at the top end position of the spring rod 82. A plurality of second fixing members 84 are installed on the outer surface of the guiding cylinder 4. An activity rod 85 is provided between the first fixing member 83 and the second fixing member 84. The two ends of the activity rod 85 are respectively hinged to the first fixing member 83 and the second fixing member 84.

[0028] Preferably, a threaded ring 41 is provided on the outer surface of the guiding cylinder 4 close to the injection cylinder 1. A threaded sleeve 10 is provided on the threaded ring 41 and is threadedly matched with it. When the threaded sleeve 10 rotates, it can move along the direction set by the threaded ring 41. When the threaded sleeve 10 gradually moves towards the elimination disc 7, the threaded sleeve 10 continuously presses down the activity rod 85, so that the angle between the activity rod 85 and the surface of the guiding cylinder 4 gradually decreases, thereby driving the first fixing member 83 to move downward and driving the spring rod 82 to press down, so that the cleaning plate 81 located in the moving groove 6 moves downward until the injection grooves 9 on the injection head 5 are closed.

[0029] Preferably, a push handle 11 is installed on the side of the piston rod 3 away from the injection cylinder 1. A receiving cover 12 is provided on the side of the guiding cylinder 4 sleeved on the outer wall of the injection cylinder 1. The push handle 11 and the receiving cover 12 are connected by a connecting rod 13. When the staff pushes the piston rod 3 through the push handle 11, the guiding cylinder 4 can be driven to move towards the injection head 5 through the connecting rod 13 and the receiving cover 12, so that a flow channel for the injection liquid to flow can be formed by the inner wall of the guiding cylinder 4 and the injection grooves 9 on the injection head 5. After the injection is completed, the threaded sleeve 10 is rotated to make the cleaning plate 81 close the injection grooves 9, and the piston rod 3 is pulled back to drive the guiding cylinder 4 to move upward, so that the injection liquid in the injection grooves 9 can be recovered by the cleaning plate 81, avoiding the residue of the injection liquid.

[0030] Preferably, a hollow cavity 14 for placing a heating rod is provided at the center of the injection head 5.

[0031] Preferably, the injection head 5 is made of a heat-conducting material. When the heating rod works, the heat can be transferred to the injection grooves 9 through the heat-conducting injection head 5, so that the injection liquid remaining fixed in the injection grooves 9 is heated and liquefied, facilitating recovery.

[0032] Working principle: First, place the injection head 5 on the mold cavity. When the operator pushes the piston rod 3 by pushing the handle 11, the guide cylinder 4 can be driven to move towards the injection head 5 through the connecting rod 13 and the receiving cover 12, and at the same time, the injection liquid in the injection cylinder 1 is discharged. The discharged injection liquid sequentially enters the flow channel formed by the injection groove 9 on the injection head 5 and the guide cylinder 4 from the guide cylinder 4, and finally enters the mold cavity. After the injection is completed, manually rotate the threaded sleeve 10. When the threaded sleeve 10 rotates, it can move in the direction set along the threaded ring 41. When the threaded sleeve 10 gradually moves towards the elimination disk 7, the threaded sleeve 10 continuously presses down the movable rod 85, so that the angle between the movable rod 85 and the surface of the guide cylinder 4 gradually decreases, thereby driving the first fixing member 83 to move downward and driving the spring rod 82 to press down, so that the cleaning plate 81 located in the moving groove 6 moves downward until the injection groove 9 on the injection head 5 is closed. At the same time, pull back the piston rod 3 to drive the guide cylinder 4 and the cleaning plate 81 to move towards the injection cylinder 1, so as to recover the injection liquid in the injection groove 9. At the same time, the heating rod located in the hollow cavity 14 of the injection head 5 can be turned on to heat and melt the injection liquid in the injection groove 9, so as to melt the solidified injection liquid and improve the recovery effect.

[0033] The above is only the preferred solution of the present invention, and is not intended as a further limitation of the present invention. All equivalent changes made by using the content of the specification and drawings of the present invention are within the protection scope of the present invention.

Claims

1. An injection molding gate residue removal device, comprising an injection molding barrel (1), a piston (2) installed in the injection molding barrel (1), and a piston rod (3) connected to the piston (2) and extending outside the injection molding barrel (1), characterized in that, On one side of the injection cylinder (1) away from the piston rod (3), there is a guide cylinder (4). The side of the guide cylinder (4) close to the injection cylinder (1) is slidably sleeved on the outer wall of the injection cylinder (1). An injection head (5) is slidably arranged inside the side of the guide cylinder (4) away from the injection cylinder (1). On the side of the guide cylinder (4) close to the injection head (5), there is an elimination disc (7) provided with a plurality of moving grooves (6). At each position of the moving groove (6), there is a set of residue removal mechanisms (8). A plurality of injection grooves (9) corresponding to the positions of the moving grooves (6) are formed on the injection head (5). When the guide cylinder (4) moves to the injection head (5), a channel for the injection liquid to flow can be formed by the inner wall of the guide cylinder (4) and the injection grooves (9) on the injection head (5). Each set of the residue removal mechanisms (8) includes a cleaning plate (81) slidably installed in the moving groove (6). On the side of the cleaning plate (81) away from the injection head (5), there is a spring rod (82). The top end of the spring rod (82) extends to the outside of the elimination disc (7), and a first fixing member (83) is installed at the top end position of the spring rod (82). A plurality of second fixing members (84) are installed on the outer surface of the guide cylinder (4). An activity rod (85) is arranged between the first fixing member (83) and the second fixing member (84). The two ends of the activity rod (85) are respectively hinged to the first fixing member (83) and the second fixing member (84).

2. The injection molding gate residue removal device according to claim 1, wherein, On the outer surface of the side of the guide cylinder (4) close to the injection cylinder (1), there is a threaded ring (41). A threaded sleeve (10) is provided on the threaded ring (41) and is in threaded cooperation with it.

3. The injection molding gate residue removal device according to claim 1, characterized in that On the side of the piston rod (3) away from the injection cylinder (1), there is a push handle (11). A receiving cover (12) is arranged on the side of the guide cylinder (4) sleeved on the outer wall of the injection cylinder (1). The push handle (11) and the receiving cover (12) are connected by a connecting rod (13).

4. A device for removing injection molding gate residues according to claim 1, characterized in that, A hollow cavity (14) for placing a heating rod is formed at the center of the injection head (5).

5. The injection molding gate residue removal device according to claim 4, characterized in that, The injection head (5) is made of a heat-conducting material.

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