Fixed mold core-pulling guide mechanism

Abstract

The utility model relates to a fixed mold core-pulling guide mechanism which comprises an oil cylinder and a guide block which are positioned on the side surface of a mold frame, and further comprises a core rod which is arranged in the mold frame in a penetrating manner, the core rod can move back and forth relative to the mold frame, a piston rod of the oil cylinder is connected with the guide block, a plurality of guide grooves are formed in the guide block, and inclined guide raised lines are arranged on the guide grooves. A guide groove corresponding to the guide protruding strip is formed in the tail of the core rod, the tail of the core rod is movably located in the guide groove, the guide protruding strip is located in the guide groove, the oil cylinder drives the guide block to transversely move relative to the mold frame, and the inclined guide protruding strip enables the core rod to move front and back relative to the mold frame and the guide block. According to the utility model, the core-pulling structure is simple, the core-pulling process is stable and reliable, the yield of products is ensured, and the occupied space in the mold is greatly reduced; the core rod is subjected to sectional treatment, and the diameter of the core-pulling connecting rod is larger than that of the core main body, so that the hardness and the strength of the core-pulling connecting rod are ensured, and the strength of the whole core rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fixed mould core-pulling guide mechanism and belongs to injection mould technical field. BACKGROUND

[0002] In the design process of injection mould, for the screw column and other reverse structure on general plastic products, the core is usually used to make the screw column structure form, and then the core is pulled out by the core-pulling mechanism to make the core separate from the screw column structure on the product. However, the existing core-pulling mechanism occupies a large amount of space inside the mould, has a complex structure, and the core-pulling stability is difficult to guarantee, the core-pulling success rate is not high, which leads to a low finished product rate after the product demoulding. In addition, the screw column structure of some products is located in the middle part, such as in the air conditioner cabinet machine field, the cabinet machine base product is the bottom part of the whole cabinet machine, in order to meet the assembly requirement, the screw column structure needs to be added on the product, since the structure is in the middle part of the product, the length of the core is required to be very long, the core is easy to bend and affect the precision of the screw column forming, and the core is easy to break, since the long core is difficult to find a standard part, it is usually customized, so it is not easy to find spare parts for replacement, and the replacement cost is high. SUMMARY

[0003] The utility model aims at the shortcomings of prior art, provides a kind of fixed mould core-pulling guide mechanism with simple core-pulling structure and reduce the space occupied inside mould.

[0004] To achieve the purpose, the technical scheme adopted by the utility model is as follows:

[0005] The fixed mould core-pulling guide mechanism includes an oil cylinder located on the side of the mold frame, a guide block, a plurality of core rods arranged in the mold frame, the core rods can move forward and backward relative to the mold frame, the piston rod of the oil cylinder is connected with the guide block, a plurality of guide grooves are formed on the guide block, an inclined guide protrusion is arranged on the guide groove, a guide groove corresponding to the guide protrusion is formed on the tail of the core rod, the tail of the core rod is movably arranged in the guide groove, the guide protrusion is located in the guide groove, the oil cylinder drives the guide block to move transversely relative to the mold frame, and the inclined guide protrusion makes the core rod move forward and backward relative to the mold frame and the guide block.

[0006] As a further optimization of the above technical scheme: the core rod includes a core-pulling connecting rod and a core body connected with each other, the guide groove is located on the core-pulling connecting rod, the head of the core body is used to form the reverse structure, and the diameter of the core-pulling connecting rod is greater than the diameter of the core body.

[0007] As a further optimization of the above technical solutions: the core body and the core-pulling connecting rod are connected through an I-shaped structure, the tail of the core body is provided with a connecting protrusion, the head of the core-pulling connecting rod is provided with a connecting groove, the two side notches of the connecting groove protrude inward to form notch protrusions, the connecting protrusion is inserted into the connecting groove, and the tail of the core body is recessed on both sides and located between the two notch protrusions.

[0008] As a further optimization of the above technical solutions: the core-pulling connecting rod is provided with an anti-rotation plane, and the anti-rotation plane is in contact with the groove bottom of the guide groove.

[0009] As a further optimization of the above technical solutions: the groove wall of the guide groove is inclined to form a guide surface, the inclination angle of the guide surface is the same as the inclination angle of the guide protrusion, the tail of the core-pulling connecting rod is provided with a contact inclined surface, the inclination angle of the contact inclined surface is the same as the inclination angle of the guide surface, and the contact inclined surface is in contact with the guide surface.

[0010] As a further optimization of the above technical solutions: a pressing block fixed to the side surface of the mold frame is further included, a moving groove is formed in the pressing block, the guide block is movably arranged in the moving groove, the oil cylinder is fixed to the side surface of the pressing block, the side surface of the pressing block is provided with a connecting port, the piston rod of the oil cylinder passes through the connecting port and is connected with the guide block.

[0011] As a further optimization of the above technical solutions: the two ends of the guide protrusion are a forming end and a core-pulling end, respectively, the back of the guide block is provided with a limiting rod, the limiting rod moves synchronously with the guide block, the pressing block is provided with a long strip-shaped limiting hole, the end of the limiting rod passes through the limiting hole and can move transversely in the limiting hole, and the back of the pressing block is provided with a forming stroke switch and a core-pulling stroke switch.

[0012] As a further optimization of the above technical solutions: the piston rod of the oil cylinder and the guide block are connected through an I-shaped structure.

[0013] Compared with existing technologies, this utility model guides the core rod through the lateral movement of the inclined guide convex strip, enabling it to perform both backward core pulling and forward reset actions. The core pulling structure is simple, the core pulling process is stable and reliable, and the product yield is guaranteed. The overall core pulling structure is located on the side of the mold frame, greatly reducing the space occupied inside the mold. The core rod includes a core pulling connecting rod and a core body connected by an I-beam. The core rod is segmented, with the diameter of the core pulling connecting rod being larger than the diameter of the core body, ensuring the hardness and strength of the connecting rod, thereby improving the overall strength of the core rod and reducing the likelihood of bending and breakage. The I-beam connection method also facilitates installation and subsequent maintenance. The core body is a standard market part that can be directly purchased, allowing for quick replacement even if bending or breakage occurs, resulting in low replacement costs. The core pulling connecting rod has an anti-rotation plane that contacts the bottom of the guide groove, preventing the core pulling connecting rod from rotating relative to the guide block. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0016] Figure 3 This is a schematic diagram of the guide block and core rod in this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the present invention located within the mold frame. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. For example... Figures 1-4 As shown, the fixed mold core-pulling guiding mechanism includes a hydraulic cylinder 1, a pressure block 2, and a guide block 3 located on the side of the mold frame 6, and also includes several core rods passing through the mold frame 6, which can move back and forth relative to the mold frame 6. The pressure block 2 is fixed to the side of the mold frame 6, and a moving groove 21 is formed inside the pressure block 2. The guide block 3 is movably disposed in the moving groove 21. The hydraulic cylinder 1 is fixed to the side of the pressure block 2, and a connecting port is formed on the side of the pressure block 2. The piston rod of the hydraulic cylinder 1 passes through the connecting port and is connected to the guide block 3. Several guide grooves 31 are formed on the guide block 31, and inclined guide protrusions 33 are formed on the guide grooves 31. The tail of the core rod has a guide groove corresponding to the guide protrusion 33. The tail of the core rod is movably located in the guide groove 31, and the guide protrusion 33 is located in the guide groove.

[0019] The oil cylinder 1 drives the guide block 3 to move transversely relative to the pressing block 2 and the mold frame 6. Since the core rod is located in the mold frame 6, the mold frame 6 cannot move transversely synchronously with the guide block 5. With the transverse movement of the guide block 3, the guide protrusions 33 arranged obliquely cause the core rod to move forward and backward relative to the mold frame 6 and the guide block 3.

[0020] In the above technical solution: the core rod comprises a core connecting rod 4 and a core body 5 connected to each other, the guide groove is located on the core connecting rod 4, and the head of the core body 5 forms a reverse buckle. The diameter of the core connecting rod 4 is greater than that of the core body 5, which ensures the hardness and strength of the core connecting rod 4, thereby improving the strength of the overall core rod. The core body 5 is a market standard part, which can be directly purchased in the market, and even if it is bent or broken, it can be quickly replaced with low replacement cost.

[0021] In the above technical solution: the core body 5 and the core connecting rod 4 are connected through an I-shaped structure. The tail of the core body 5 is provided with a connecting protrusion 51, the head of the core connecting rod 4 is provided with a connecting groove 43, the two side notches of the connecting groove 43 are inwardly protruding to form notch protrusions 44, the connecting protrusion 51 is inserted into the connecting groove 43, the tail of the core body 5 is inwardly recessed on both sides and located between the two notch protrusions 44, and the notch protrusions 44 prevent the connecting protrusion 51 from being separated from the connecting groove 43. The I-shaped connection between the core body 5 and the core connecting rod 4 facilitates installation and subsequent maintenance.

[0022] In the above technical solution: the groove wall of the guide groove 31 is obliquely arranged to form a guide surface 32, and the inclination angle of the guide surface 32 is the same as that of the guide protrusion 33. The tail of the core connecting rod 4 is provided with a contact inclined surface 41, the inclination angle of the contact inclined surface 41 is the same as that of the guide surface 32, the contact inclined surface 41 is in contact with the guide surface 32, and the contact inclined surface 41 plays an auxiliary guiding role for the relative movement between the core connecting rod 4 and the guide block 3.

[0023] In the above technical solution: the core connecting rod 4 is provided with an anti-rotation flat surface 42, the anti-rotation flat surface 42 is in contact with the groove bottom of the guide groove 31, and the anti-rotation flat surface 42 prevents the core connecting rod 4 from rotating relative to the guide block 3.

[0024] In the above technical solution: the piston rod of the oil cylinder 1 is connected to the guide block 3 through an I-shaped structure.

[0025] In the above technical solution: the two ends of the guide convex strip 33 are respectively a forming end 331 and a core-pulling end 332. The back of the guide block 3 is provided with a limiting rod 34, the limiting rod 34 moves synchronously with the guide block 3, the pressing block 2 is provided with a long strip-shaped limiting hole 22, the end of the limiting rod 34 passes through the limiting hole 22 and can move transversely in the limiting hole 22. The back of the pressing block 2 is provided with a forming stroke switch 23 and a core-pulling stroke switch 24. When the tail of the core rod is located at the forming end 331, the forming stroke switch 23 senses the limiting rod 34, and sends a signal that the core rod is reset to position, prompting the system to perform subsequent mold closing and forming actions; when the tail of the core rod moves to the core-pulling end 332, the core-pulling stroke switch 24 senses the limiting rod 34, and sends a signal that the core-pulling is completed, prompting the system to perform subsequent mold opening and ejection actions. In the application, the reverse buckle is formed in the fixed mold, the mold frame 6 is a fixed mold frame, and the core-pulling action needs to be completed in the fixed mold, so the mold needs to be opened after core-pulling, otherwise the product will be damaged.

[0026] In the utility model, the transverse movement of the guide convex strip 33 arranged obliquely guides the core rod to realize the backward core-pulling action and the forward resetting action, the core-pulling structure is simple, the core-pulling process is stable and reliable, and the yield of products is ensured; the overall core-pulling structure is arranged on the side surface of the mold frame 6, greatly reducing the space occupied in the mold; the core rod comprises the core-pulling connecting rod 4 and the core main body 5 which are connected with each other in the I shape, the core rod is processed in sections, the diameter of the core-pulling connecting rod 4 is greater than that of the core main body 5, the hardness and strength of the core-pulling connecting rod 4 are ensured, thereby improving the strength of the overall core rod, reducing the bending and breaking of the core rod, and the I shape connection facilitates installation and subsequent maintenance; the core main body 5 is a market standard part and can be directly purchased in the market, and even if bending or breaking occurs, the replacement can be quickly completed, and the replacement cost is low; the core-pulling connecting rod 4 is provided with an anti-rotation plane 42, the anti-rotation plane 42 is in contact with the groove bottom of the guide groove 31, and the core-pulling connecting rod 4 is prevented from rotating relative to the guide block 3.

[0027] The above detailed the preferred embodiments of the utility model. It should be understood that those skilled in the art can make many modifications and changes according to the conception of the utility model without creative labor. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the conception of the utility model should fall within the protection scope of the utility model.

Claims

1. A fixed mold core-pulling guiding mechanism, characterized in that... The system includes a hydraulic cylinder (1) and a guide block (3) located on the side of the mold frame (6), and also includes several core rods passing through the mold frame (6). The core rods can move back and forth relative to the mold frame (6). The piston rod of the hydraulic cylinder (1) is connected to the guide block (3). The guide block (3) has several guide grooves (31). The guide grooves (31) are provided with inclined guide protrusions (33). The tail of the core rod is provided with a guide groove corresponding to the guide protrusions (33). The tail of the core rod is movably located in the guide grooves (31). The guide protrusions (33) are located in the guide grooves. The hydraulic cylinder (1) drives the guide block (3) to move laterally relative to the mold frame (6). The inclined guide protrusions (33) cause the core rod to move back and forth relative to the mold frame (6) and the guide block (3).

2. The fixed mold core-pulling guiding mechanism according to claim 1, characterized in that... The core rod includes a core-pulling connecting rod (4) and a core body (5) connected to each other. The guide groove is located on the core-pulling connecting rod (4). The head of the core body (5) is formed by an undercut. The diameter of the core-pulling connecting rod (4) is larger than the diameter of the core body (5).

3. The fixed mold core-pulling guiding mechanism according to claim 2, characterized in that... The core body (5) and the core-pulling connecting rod (4) are connected by an I-beam structure. The tail of the core body (5) is provided with a connecting protrusion (51), and the head of the core-pulling connecting rod (4) is provided with a connecting groove (43). The two sides of the connecting groove (43) protrude inward to form groove protrusions (44). The connecting protrusions (51) are inserted into the connecting groove (43). The two sides of the tail of the core body (5) are concave and located between the two groove protrusions (44).

4. The fixed mold core-pulling guiding mechanism according to claim 2, characterized in that... The core-pulling connecting rod (4) has an anti-rotation plane (42) which is in contact with the bottom of the guide groove (31).

5. The fixed mold core-pulling guiding mechanism according to claim 2, characterized in that... The guide groove (31) has an inclined groove wall to form a guide surface (32). The inclination angle of the guide surface (32) is the same as that of the guide protrusion (33). The tail of the core-pulling connecting rod (4) has a contact slope (41). The inclination angle of the contact slope (41) is the same as that of the guide surface (32). The contact slope (41) is in contact with the guide surface (32).

6. The fixed mold core-pulling guiding mechanism according to claim 1, characterized in that... It also includes a pressure block (2) fixed to the side of the mold frame (6), the pressure block (2) having a moving groove (21) inside, the guide block (3) being movably disposed in the moving groove (21), the oil cylinder (1) being fixed to the side of the pressure block (2), the side of the pressure block (2) having a connection port, the piston rod of the oil cylinder (1) passing through the connection port and being connected to the guide block (3).

7. The fixed mold core-pulling guiding mechanism according to claim 6, characterized in that... The two ends of the guide protrusion (33) are the forming end (331) and the core-pulling end (332), respectively. The back of the guide block (3) is provided with a limiting rod (34). The limiting rod (34) moves synchronously with the guide block (3). The pressure block (2) is provided with a long strip-shaped limiting hole (22). The end of the limiting rod (34) passes through the limiting hole (22) and can move laterally within the limiting hole (22). The back of the pressure block (2) is provided with a forming stroke switch (23) and a core-pulling stroke switch (24).

8. The fixed mold core-pulling guiding mechanism according to claim 1, characterized in that... The piston rod of the oil cylinder (1) is connected to the guide block (3) through an I-beam structure.

Images