Mounting structure of extrusion pad and extrusion equipment

Abstract

The mounting structure is used for mounting the dummy block on an extruding machine through an extruding rod, and a threaded counter bore is formed in the rear end, opposite to the front end face of the extruding rod, of the dummy block; the extrusion rod is of a hollow columnar structure allowing the threaded rod to penetrate through and comprises a through hole I extending from the front end face of the extrusion rod to the mounting plane on the opposite side in the axial direction and a center sinking groove communicated with the through hole I and formed in the mounting plane, the diameter of the center sinking groove is larger than that of the through hole I, and a boss serving as a support of the spring is formed. Threads connected with the threaded counter bore are formed at one end of the threaded rod, and a stop part acting on the spring is arranged at the other end of the threaded rod and limits the spring in the center sinking groove. The extrusion equipment comprises an extrusion machine and the extrusion pad, and is characterized in that the extrusion machine and the extrusion pad are connected together through the installation structure of the extrusion pad. Therefore, flexible buffering is provided for the separation early stage of the pressure residue and the extrusion pad through the backstop part and the spring.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy extrusion, specifically to an extrusion pad mounting structure and extrusion equipment. Background Technology

[0002] When the extrusion rod is used for extrusion, the extrusion pad connected to the extrusion rod pushes the tail end of the casting rod forward slowly. The contact surface between the two is subjected to extremely high pressure. However, the high-temperature aluminum alloy is relatively soft. Therefore, the tail end of the extrusion rod (the little bit left after the casting rod is extruded and needs to be cut off is called the extrusion residue) will stick to the extrusion pad.

[0003] Currently known methods for connecting extrusion pads and extrusion rods are all common rigid connections. For example, the extrusion rod has external threads, the extrusion pad has internal threads, and the extrusion pad is screwed onto the extrusion rod for connection. Alternatively, the extrusion rod has a protruding cross at the front end, the extrusion pad has a concave cross, the two are interlocked, and secured with a pin. Although no problems occur during the extrusion process, after each short ingot is extruded, the extrusion pad must separate from the residual pressure. The pull force between the two will cause a separation force between the extrusion pad and the extrusion rod. The rigid connection will cause slight deformation of each component during repeated pulls, resulting in a weakened connection between the extrusion pad and the extrusion rod. The extrusion pad will tilt downwards under the influence of gravity, unable to maintain coaxiality with the extrusion rod. In severe cases, the extrusion pad may hit the extrusion cylinder, causing the entire extrusion pad and extrusion rod to break, resulting in economic losses and seriously affecting the safety of the operator. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide an installation structure for a compression pad.

[0005] According to one aspect of the present invention, a mounting structure for an extrusion pad is provided for mounting the extrusion pad on an extruder via an extrusion rod. The extrusion pad has a threaded countersunk hole at its rear end opposite to the front end face of the extrusion rod. The extrusion rod is formed as a hollow columnar structure through which a threaded rod can pass, including: a through hole I extending from the front end face of the extrusion rod toward an axially opposite mounting plane, and a central countersunk groove formed on the mounting plane communicating with the through hole I. The diameter of the central countersunk groove is larger than that of the through hole I, forming a boss that serves as a support for a spring. One end of the threaded rod has a thread that connects to the threaded countersunk hole, and the other end has a stop portion that acts on the spring, the stop portion confining the spring in the central countersunk groove.

[0006] Preferably, the stop is integrally formed on the threaded rod or is configured as a nut threadedly connected to the threaded rod.

[0007] Preferably, the extrusion pad is configured as a frustum cone, and the axis of the threaded countersunk hole is perpendicular to the rear end of the extrusion pad.

[0008] Preferably, the side where the mounting plane is located has a larger diameter than the side where the front end face of the extrusion rod is located, and between the two, a transition zone is formed in which the outer diameter of the extrusion rod gradually increases as it moves toward the mounting plane.

[0009] Preferably, the transition zone is configured such that the outer edge of the contour line is an arc-shaped axisymmetric shape.

[0010] Preferably, multiple axially connected grooves and through holes II are evenly distributed circumferentially in the transition zone, extending to the mounting plane, and the extrusion rod and the extruder are connected by fastening bolts passing through the grooves and through holes II.

[0011] Preferably, the central sink is coaxially arranged with the extrusion rod.

[0012] According to another aspect of the present invention, an extrusion apparatus is provided, comprising: an extruder and an extrusion pad, characterized in that the extruder and the extrusion pad are connected together via an installation structure for the extrusion pad.

[0013] The beneficial effects of this invention are as follows: A flexible connection is used between the extrusion pad and the extrusion rod. During the actual extrusion process, the force on the extrusion pad is directly transmitted to the extrusion rod, ensuring a firm connection between them. After each short ingot is extruded, the pull-out force acting between the extrusion pad and the residual pressure when they separate will create a separation force between them. This force will deform the spring, and once the extrusion pad and residual pressure have completely separated, the spring force will force the extrusion pad to press firmly against the extrusion rod again. Attached Figure Description

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0015] Figure 1 This is a left-side cross-sectional view of an installation structure according to an embodiment of the present invention.

[0016] Figure 2 This is a front view schematic diagram of the installation structure. Detailed Implementation

[0017] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The exemplary embodiments described below and illustrated in the drawings are intended to teach the principles of the present invention, enabling those skilled in the art to implement and use the present invention in various environments and for various applications. Therefore, the scope of protection of the present invention is defined by the appended claims, and the exemplary embodiments are not intended, and should not be considered, a limiting description of the scope of protection of the present invention. Furthermore, for ease of description, the dimensions of the various parts shown in the drawings are not necessarily drawn to actual scale. Orientation descriptions, such as upper, lower, front, back, inner, and outer directions, or referring to the direction of extrusion as front, are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or partial constructions will be omitted where they may cause confusion or make the understanding of the present disclosure difficult to observe. Unless otherwise specifically stated, the order and numerical values ​​of the components and assembly steps described in the embodiments do not limit the scope of this invention.

[0018] like Figure 1 , 2 The present invention, as illustrated, provides a mounting structure for an extrusion pad 100, which connects the extrusion pad 100 to an extrusion rod 200, thereby mounting the extrusion pad 100 to an extruder (not shown) via the extrusion rod 200.

[0019] The extrusion pad 100 includes: a threaded countersunk hole 101, a rear end of the extrusion pad 102, and a front end of the extrusion pad 103.

[0020] The extrusion rod 200 includes: a mounting plane 201, a spring 202, a nut 203, a transition zone 204, a central groove 205, a through hole II 206, a groove 207, a boss 208, a through hole I 209, a threaded rod 210, and an extrusion rod body 211.

[0021] Preferably, the extrusion pad 100 is configured as a frustum-shaped cone. Figure 1 The left-side cross-section is correspondingly an isosceles trapezoid, with the extrusion pad rear end 102 opposite the front end face of the extrusion rod 200. A threaded countersunk hole 101 is provided at the center of the extrusion pad rear end 102, and the axis of the threaded countersunk hole 101 is perpendicular to the extrusion pad rear end 102. The extrusion pad front end 103 is parallel to the extrusion pad rear end 102.

[0022] Preferably, the extrusion rod 200 has an axisymmetric hollow columnar structure, and the mounting plane 201 on the side where the extruder is installed is parallel to the rear end 102 of the extrusion pad, with the front end face of the extrusion rod 200 forming a planar contact with the rear end 102 of the extrusion pad. The side where the mounting plane 201 is located has a larger diameter than the side where the front end face of the extrusion rod 200 is located, especially between the two, forming a transition region 204 where the outer diameter of the extrusion rod 200 gradually increases towards the mounting plane 201. This transition region 204 is also axisymmetric, as shown in the figure. Figure 1 As shown in the cross-sectional view, the outer edge of the outline is arc-shaped. This creates a head with a larger diameter at the end where the mounting plane 201 is located, providing greater rigidity for connection to the extruder.

[0023] More specifically, such as Figure 2 As shown, eight axially connected slots 207 and through holes II 206 are evenly distributed circumferentially in the transition zone 204. The axes of the through holes II 206 and the slots 207 are parallel to the axis of the extrusion rod 200, and the axes of the through holes II 206 and the slots 207 can be coaxially arranged. In this way, the extrusion rod 200 and the extrusion press can be connected by corresponding fastening bolts through each through hole II 206 from one side of the slot 207, and vice versa.

[0024] The hollow structure of the extrusion rod 200 includes: an elongated through hole I 209 extending from the front end face of the extrusion rod 200 toward the mounting plane 201 on the axially opposite side, and a central recess 205 communicating with the through hole I 209 and formed in the mounting plane 201. The through hole I 209 is located at the very center of the extrusion rod 200 and can be coaxially arranged with the extrusion rod 200. The central recess 205 is located at the leftmost end of the extrusion rod 200, and its axis is coaxially arranged with the extrusion rod 200. The diameter of the central recess 205 is larger than that of the through hole I 209, forming a boss 208 that can be used as a support for the spring 202.

[0025] Thus, the hollow structure of the extrusion rod 200 is formed to provide a working space for the threaded rod 210 to pass through and connect to the extrusion pad 100. By screwing the thread of one end of the threaded rod 210 into the threaded countersunk hole 101 of the extrusion pad 100, the other end can be inserted into the spring 202 in an outer sleeve manner, so that one end of the spring 202 is pressed against the boss 208, and the nut 203 is screwed into the other end of the threaded rod 210, so that the spring 202 is pre-compressed by 60%.

[0026] The above illustrates a separate threaded connection structure between the threaded rod 210 and the nut 203, where the nut 203 essentially constitutes a stop that can act on the spring 202. However, the threaded rod 210 and the stop can also be integrally formed, inserted from one side of the central countersunk groove 205 and passing through the through hole I 209, and screwed into the threaded countersunk hole 101 of the rear end 102 of the compression pad. The stop confines the spring 202 within the central countersunk groove 205.

[0027] <Example>

[0028] Spring 202 is made of SUP10 spring 202 steel, and its spring constant range is 1.50 × 10⁻⁶. 5 Approximately N / m. Spring 202 spring wire diameter: 10 (±0.1) mm, spring outer diameter 110 (±1) mm, spring inner diameter 90 (±1) mm, spring free height 350 (±1) mm.

[0029] Dimensions of countersunk hole 101: Diameter 40 (±0.01) mm, Depth 23 (±1) mm.

[0030] The dimensions of the extrusion pad rear end 102 are: diameter 181 (±0.1) mm; the dimensions of the extrusion pad front end 103 are: diameter 184 (±0.1) mm; the thickness of the extrusion pad 100 is 150 (±1) mm.

[0031] The extrusion rod 200 has a diameter of 181 (±1) mm and a length of (±1) 1250 mm.

[0032] Mounting plane 201 dimensions: diameter 244 (±1) mm.

[0033] The threaded rod 210 has a diameter of 40 (±0.01) mm and a length of 1615 (±1) mm.

[0034] The minimum diameter of the transition zone 204 is 181 (±1) mm; the maximum diameter of the transition zone 204 is 244 (±1) mm.

[0035] Through hole I209: diameter: 80 (±1) mm, length: 1250 (±1) mm.

[0036] The diameter of the central settling tank 205 is 120 (±1) mm, and the depth is 350 (±1) mm.

[0037] The diameter of the settling tank 207 is 100 (±1) mm, the deepest point is 100 (±1) mm, the shallowest point is 0 mm, and the distance from the axis to the outermost edge of the transition zone 204 is 125 (±1) mm.

[0038] Through hole II 206: diameter 80 (±1) mm, depth 80 (±1) mm, axis distance from the outermost edge of transition zone 204 125 (±1) mm.

[0039] Working Principle

[0040] After the mounting structure is fixed to the extruder by fastening bolts, in the later stages of the extrusion process, when the residual pressure is separated from the extrusion pad 100 by the pulling force, the reaction force of the pulling force will force the spring 202 to be compressed further. That is, the reaction force will pull the rear end 102 of the extrusion pad away from the front end face of the extrusion rod 200, causing the threaded rod 210 to move forward as well, and simultaneously compressing the spring 202 via the nut 203 (or the stop). In this way, a flexible buffer is provided for the early stage of separation between the residual pressure and the extrusion pad 100.

[0041] Once the pressure residue is completely separated from the compression pad 100, the aforementioned reaction force disappears, and the spring 202 returns to its previous state, thereby driving the threaded rod 210 to move backward until the compression pad 100 and the compression rod 200 are rejoined.

[0042] On the other hand, in the early stage of the extrusion operation, the extrusion pad 100 and the extrusion rod 200 are subjected to pressure. The force exerted on the extrusion pad 100 by the tail end of the casting rod acts directly on the body 211 of the extrusion rod and will not produce a deformation force on the spring 202.

[0043] By repeating this process, the problems in traditional rigid connection structures can be overcome, and the service life of the extrusion pad 100 can be extended.

[0044] In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified. Unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Although the present invention has been described with reference to various specific embodiments, it should be understood that modifications can be made within the spirit and scope of the described inventive concept. Therefore, it is intended that the present invention be limited to the described embodiments but will have the full scope defined by the language of the appended claims.

Claims

1. An installation structure of an extrusion pad for installing the extrusion pad to an extruder via an extrusion rod, characterized by, The extrusion pad (100) is provided with a threaded hole (101) at the rear end (102) opposite to the front end surface of the extrusion rod (200); the extrusion rod (200) is formed as a hollow columnar structure for the threaded rod (210) to penetrate, comprising: a through hole I (209) extending from the front end surface of the extrusion rod (200) to the mounting plane (201) on the opposite side in the axial direction, and a central recess (205) provided in the mounting plane (201) in communication with the through hole I (209), wherein the diameter of the central recess (205) is larger than that of the through hole I (209), forming a boss (208) as a support for the spring (202), one end of the threaded rod (210) is provided with a thread connected with the threaded hole (101), and the other end is provided with a stop portion acting on the spring (202), and the stop portion limits the spring (202) in the central recess (205).

2. The mounting structure for the extrusion gasket according to claim 1, characterized by The stop portion is integrally formed on the threaded rod (210) or a nut (203) threaded on the threaded rod (210).

3. The mounting structure for the extrusion gasket according to claim 1, wherein The extrusion pad (100) is conical, and the axis of the threaded hole (101) is perpendicular to the rear end (102) of the extrusion pad.

4. The mounting structure for the extrusion gasket according to claim 1, wherein The mounting plane (201) is provided with a larger diameter on one end side than on the front end surface side of the extrusion rod (200), and between them, a transition zone (204) is formed, which gradually increases in diameter towards the mounting plane (201) from the outer diameter of the extrusion rod (200).

5. The mounting structure for the extrusion gasket according to claim 4, wherein The transition zone (204) is formed as an axisymmetric shape with the outer edge of the contour line in a circular arc shape.

6. The mounting structure for the extrusion gasket according to claim 4, wherein A plurality of recesses (207) and through holes II (206) are uniformly distributed in the circumferential direction of the transition zone (204) and are provided in the mounting plane (201) in axial communication, and the extrusion rod (200) and the extrusion machine are connected by a fastening bolt penetrating through the recess (207) and the through hole II (206).

7. The mounting structure for the extrusion gasket according to claim 1, wherein The central recess (205) is coaxially arranged with the extrusion rod (200).

8. An extrusion apparatus comprising: The extrusion machine and the extrusion pad are characterized in that the extrusion machine and the extrusion pad are connected together through the mounting structure of the extrusion pad according to any one of claims 1 to 7.

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