A novel top bolt fixing structure

Abstract

This utility model discloses a novel top bolt fixing structure, relating to the field of internal mixer technology. It includes: a top bolt with a piston inner hole, the end of which has an adapter groove; a piston rod with a protruding adapter ring and a connecting plate, the adapter ring being located below the connecting plate and nested within the adapter groove; the piston rod, located below the adapter ring, being nested within the piston inner hole; the connecting plate and the top bolt being connected by screws; a first sealing ring and a second sealing ring being provided between the piston rod and the top bolt; and a pin connecting the side wall of the top bolt and the adapter ring. In this utility model, the piston rod and the top bolt are directly connected by screws, ensuring that all axial force is applied to the screws, avoiding the risk of piston rod breakage. The connection is simple and convenient, simplifying the installation process and facilitating maintenance and component replacement.

Description

Technical Field

[0001] This utility model relates to the field of internal mixer technology, specifically to a novel top bolt fixing structure. Background Technology

[0002] When mixing rubber compounds in an internal mixer, a hydraulic cylinder drives an upper jack, which is fixedly connected to the piston rod, to apply pressure to the rubber compound to ensure the quality of the mixed rubber. This structure is an important component of the internal mixer. However, the old-style upper jack and piston rod fixing structure has many defects, revealing numerous problems during use and seriously affecting production.

[0003] The old-style structure uses a retaining ring mounted on the piston rod, and the entire assembly is pressed onto the top bolt via a flange to prevent axial movement. A mounting pin in the middle of the top bolt then secures the piston rod to the bolt, preventing circumferential movement. A sloping protective cover is installed at the top to prevent dust accumulation. After a period of use, the stress point is mainly on the pin, which deforms under stress. The two outer seals become ineffective, and only one internal seal exists, easily leading to leakage. Furthermore, due to the precision required for machining, if a gap appears at the retaining ring position, the piston rod's reciprocating up-and-down movement of the top bolt can cause excessive impact, potentially leading to piston rod breakage. The protective cover is a welded structure, which may detach over time, contaminating the rubber compound when lowered into the internal mixer and potentially damaging downstream equipment. Utility Model Content

[0004] The purpose of this invention is to provide a novel top bolt fixing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel top bolt fixing structure, comprising:

[0006] The upper bolt has a piston inner hole, and the end of the piston inner hole has an adapter groove.

[0007] A piston rod is provided with a protruding adapter ring and a connecting plate. The adapter ring is located below the connecting plate and is nested in an adapter groove. The piston rod body located below the adapter ring is nested in the piston inner hole. The connecting plate is connected to the upper plug by screws. An upper cover plate is provided above the connecting plate. A first sealing ring and a second sealing ring are provided between the piston rod and the upper plug. A pin is connected between the side wall of the upper plug and the adapter ring.

[0008] Furthermore, the adapter ring, connecting plate, and piston rod are integrally machined, which improves the fitting accuracy between the adapter ring, connecting plate, and piston rod, reduces errors during assembly, and improves the overall stability and reliability of the structure.

[0009] Furthermore, the top edge of the adapter groove is provided with equally spaced screw holes, the connecting plate abuts against the top edge of the adapter groove, and the connecting plate is provided with mounting holes corresponding to the positions of each screw hole. The tail end of the screw passes through the mounting hole and is nested in the screw hole. Through the cooperation of the screw hole and the mounting hole, the connecting plate and the top edge of the adapter groove can be accurately positioned to ensure the stability and sealing performance of the structure.

[0010] Furthermore, the upper side wall of the top bolt is provided with a pin hole, and the side wall of the adapter ring is provided with a positioning hole corresponding to the position of the pin hole. The tail end of the pin shaft passes through the pin hole and is nested in the positioning hole. Through the cooperation of the pin hole and the positioning hole, the pin shaft can be accurately positioned, which further enhances the stability of the structure and prevents relative movement in the circumferential direction.

[0011] Furthermore, the upper cover plate is sleeved on the piston rod, and the upper cover plate is connected to the connecting plate by screws, making the connection simple and convenient, and facilitating disassembly and replacement.

[0012] Furthermore, the edge of the upper cover plate is provided with a first connecting hole, and the connecting plate is provided with a second connecting hole at the position corresponding to the first connecting hole. The tail end of the screw passes through the first connecting hole and is nested in the second connecting hole, so as to achieve precise positioning and fixing between the upper cover plate and the connecting plate.

[0013] Furthermore, the upper cover plate is made of steel plate, which improves the strength and durability of the upper cover plate.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. The piston rod and the upper bolt are directly connected by screws, so that all the axial force is applied to the screws, avoiding the risk of piston rod breakage. The connection is simple and convenient, simplifying the installation process and making it easier to maintain and replace parts.

[0016] 2. The pin design prevents relative circumferential movement between the piston rod and the upper bolt, protecting the screw from shear force and enhancing its lifespan.

[0017] 3. Through the matching of screw holes and mounting holes, as well as the design of the first and second connecting holes, precise positioning between components is achieved, ensuring the stability and sealing performance of the structure;

[0018] 4. By setting the first sealing ring and the second sealing ring, the sealing performance is significantly improved, effectively preventing the leakage of cooling water. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side sectional view of the top bolt of this utility model;

[0022] Figure 3 This is a top view of the top bolt of this utility model;

[0023] Figure 4 This is a schematic diagram of the piston rod of this utility model;

[0024] Figure 5 This is a top view of the piston rod of this utility model;

[0025] Figure 6 This is a cross-sectional view of the top cover plate of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Top bolt; 2. Piston inner bore; 3. Adapter groove; 4. Piston rod; 5. Adapter ring; 6. Connecting plate; 7. Screw; 8. Top cover plate; 9. First sealing ring; 10. Second sealing ring; 11. Pin; 12. Screw hole; 13. Mounting hole; 14. First connecting hole; 15. Second connecting hole. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model provides, for example Figures 1 to 6 The novel top bolt fixing structure shown includes:

[0030] The upper bolt 1 has a piston inner hole 2, and the end of the piston inner hole 2 has an adapter groove 3.

[0031] The piston rod 4 has a protruding adapter ring 5 and a connecting plate 6. The adapter ring 5 is located below the connecting plate 6 and is nested in the adapter groove 3. The piston rod 4, located below the adapter ring 5, is nested in the piston inner hole 2. The connecting plate 6 and the upper plug 1 are connected by screws 7. The upper cover plate 8 is provided above the connecting plate 6. A first sealing ring 9 and a second sealing ring 10 are provided between the piston rod 4 and the upper plug 1. A pin 11 is connected between the side wall of the upper plug 1 and the adapter ring 5.

[0032] The adapter ring 5, connecting plate 6 and piston rod 4 are integrally machined, which improves the fitting accuracy between the adapter ring 5, connecting plate 6 and piston rod 4, reduces errors in the assembly process, and improves the overall stability and reliability of the structure.

[0033] The top edge of the adapter groove 3 is provided with equally spaced screw holes 12. The connecting plate 6 abuts against the top edge of the adapter groove 3. The connecting plate 6 is provided with mounting holes 13 corresponding to the positions of each screw hole 12. The tail end of the screw 7 passes through the mounting hole 13 and is nested in the screw hole 12. Through the cooperation of the screw hole 12 and the mounting hole 13, the connecting plate 6 and the top edge of the adapter groove 3 can be accurately positioned to ensure the stability and sealing performance of the structure.

[0034] The upper side wall of the top bolt 1 is provided with a pin hole, and the side wall of the adapter ring 5 is provided with a positioning hole corresponding to the position of the pin hole. The tail end of the pin shaft 11 passes through the pin hole and is nested in the positioning hole. Through the cooperation of the pin hole and the positioning hole, the pin shaft 11 can be accurately positioned, which further enhances the stability of the structure and prevents relative movement in the circumferential direction.

[0035] The upper cover plate 8 is fitted onto the piston rod 4, and the upper cover plate 8 is connected to the connecting plate 6 by screws. The connection is simple and convenient, and it is easy to disassemble and replace.

[0036] The upper cover plate 8 has a first connecting hole 14 on its edge, and the connecting plate 6 has a second connecting hole 15 at the position corresponding to the first connecting hole 14. The end of the screw passes through the first connecting hole 14 and is nested in the second connecting hole 15, so as to achieve precise positioning and fixation between the upper cover plate 8 and the connecting plate 6.

[0037] The top cover plate 8 is made of steel plate, which improves the strength and durability of the top cover plate 8.

[0038] In this invention, the piston rod 4 is inserted into the piston inner hole 2 of the upper plug 1, and the adapter ring 5 is nested in the adapter groove 3 at the top of the piston inner hole 2. The tail end of the screw 7 passes through the mounting hole 13 on the connecting plate 6 and is nested in the screw hole 12 of the upper plug 1, thus connecting the piston rod 4 and the upper plug 1. At the same time, the tail end of the pin 11 passes through the pin hole on the upper plug 1 and is nested in the positioning hole on the piston rod 4. The piston rod 4 and the upper plug 1 are directly connected by the screw 7, so that all the axial force is applied to the screw 7, avoiding the risk of piston rod 4 breaking. The pin 11 is fixed at the mating surface to prevent relative movement in the circumferential direction, protect the screw 7 from shear force, enhance the life of the screw 7, and improve the stability of the overall structure. A first sealing ring 9 and a second sealing ring 10 are provided between the piston rod 4 and the upper plug 1, which significantly improves the sealing performance and effectively prevents the leakage of cooling water.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel top bolt fixing structure, characterized in that, include: The upper top bolt (1) has a piston inner hole (2) and the end of the piston inner hole (2) has an adapter groove (3). The piston rod (4) has a protruding adapter ring (5) and a connecting plate (6). The adapter ring (5) is located on the lower side of the connecting plate (6). The adapter ring (5) is nested in the adapter groove (3). The piston rod (4) located below the adapter ring (5) is nested in the piston inner hole (2). The connecting plate (6) is connected to the upper top bolt (1) by a screw (7). The upper cover plate (8) is provided above the connecting plate (6). The piston rod (4) and the upper top bolt (1) are provided with a first sealing ring (9) and a second sealing ring (10). The side wall of the upper top bolt (1) is connected to the adapter ring (5) by a pin (11).

2. The novel top bolt fixing structure according to claim 1, characterized in that: The adapter ring (5), connecting disc (6) and piston rod (4) are integrally formed.

3. The novel top bolt fixing structure according to claim 1, characterized in that: The top edge of the adapter groove (3) is provided with screw holes (12) at equal intervals. The connecting plate (6) abuts against the top edge of the adapter groove (3). The connecting plate (6) is provided with mounting holes (13) corresponding to the positions of each screw hole (12). The tail end of the screw (7) passes through the mounting hole (13) and is nested in the screw hole (12).

4. The novel top bolt fixing structure according to claim 1, characterized in that: The upper side wall of the top bolt (1) is provided with a pin hole, and the side wall of the adapter ring (5) is provided with a positioning hole corresponding to the position of the pin hole. The tail end of the pin shaft (11) passes through the pin hole and is nested in the positioning hole.

5. The novel top bolt fixing structure according to claim 1, characterized in that: The upper cover plate (8) is sleeved on the piston rod (4), and the upper cover plate (8) is connected to the connecting plate (6) by screws.

6. The novel top bolt fixing structure according to claim 5, characterized in that: The edge of the upper cover plate (8) is provided with a first connecting hole (14), and the connecting plate (6) is provided with a second connecting hole (15) corresponding to the position of the first connecting hole (14). The tail end of the screw passes through the first connecting hole (14) and is nested in the second connecting hole (15).

7. The novel top bolt fixing structure according to claim 1, characterized in that: The upper cover plate (8) is made of steel plate.

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