A servo press

Abstract

This utility model relates to the technical field of servo press equipment, and provides a servo press including a cylinder. A lead screw is rotatably connected inside the cylinder, and a nut is threaded onto the outer wall of the lead screw. A piston rod that moves synchronously with the lead screw is located on the outer wall of the nut. An anti-rotation key extends axially from the inner wall of the cylinder, and a keyway matching the anti-rotation key is formed on the outer wall of the piston rod to restrict the rotation of the piston rod relative to the cylinder. This utility model overcomes the shortcomings of the prior art, has a reasonable design, and a compact structure. The anti-rotation key directly limits the piston rod's outer wall, providing additional support. Its cooperation with the inner wall of the cylinder makes the piston rod subject to more uniform constraint force, reducing vibration, enhancing structural stability, and increasing service life. The nut and piston rod are detachably connected, and a disassembly port is provided on the outer wall of the cylinder, corresponding to the first bolt that fixes both. When replacing or repairing the piston rod, it is not necessary to disassemble the entire cylinder, simplifying the process and shortening the time.

Description

Technical Field

[0001] This utility model relates to the field of servo press equipment technology, specifically to a servo press. Background Technology

[0002] In industrial production, presses are an important piece of equipment and are widely used in various scenarios that require pressure processing, such as metal forming and plastic pressing. However, traditional presses have some limitations in achieving pressure output.

[0003] Traditional presses drive the piston rod by limiting the movement of the nut's outer wall. This structure results in insufficient support for the piston rod during movement, uneven distribution of constraint force, poor stability of the piston rod during operation, and easy vibration. This not only affects the machining accuracy but also accelerates the wear of the piston rod and related components, reducing the service life of the equipment. To address this, we propose a servo press. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a servo press to solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a servo press, comprising a cylinder, a lead screw rotatably connected inside the cylinder, a nut threadedly connected to the outer wall of the lead screw, a piston rod moving synchronously with the lead screw on the outer wall of the nut, an anti-rotation key extending axially from the inner wall of the cylinder, and a keyway matching the anti-rotation key on the outer wall of the piston rod to restrict the piston rod from rotating relative to the cylinder.

[0006] Furthermore, the lead screw nut and the piston rod are fixed together by a plurality of first bolts, which are arranged along the axial direction of the lead screw. The keyway passes through one end of the piston rod facing the inside of the cylinder. The outer wall of the cylinder is provided with a disassembly port, which extends along the axial direction of the cylinder and corresponds to the first bolts.

[0007] Furthermore, a sealing plate is provided on the outside of the disassembly port, and the sealing plate is connected to the cylinder by several third bolts.

[0008] Furthermore, the anti-rotation key is connected to the cylinder barrel by several second bolts.

[0009] Furthermore, a number of filler plates are provided between the inner wall of the cylinder and the outer wall of the piston rod.

[0010] Furthermore, one end of the cylinder is provided with a mounting base, and the mounting base is provided with a driven gear connected to the end of the lead screw. The outer wall of the driven gear is meshed with a transmission gear, and the outer wall of the transmission gear is meshed with a drive gear. One side of the drive gear is provided with a drive source to drive its rotation.

[0011] This utility model provides a servo press, which has the following advantages:

[0012] 1. The anti-rotation key directly limits the piston rod's outer wall, providing additional support. It cooperates with the cylinder's inner wall to make the piston rod more uniformly constrained, reducing vibration, enhancing structural stability, and increasing service life.

[0013] 2. The nut and piston rod are detachably connected. The cylinder outer wall is provided with a disassembly port, which corresponds to the first bolt that fixes the two. When replacing or repairing the piston rod, it is not necessary to disassemble the entire cylinder, which simplifies the process and shortens the time. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the cylinder structure of this utility model;

[0016] Figure 3 This is a three-dimensional schematic diagram of the driving source structure of this utility model;

[0017] Figure 4 This is a three-dimensional schematic diagram of the filling plate structure of this utility model.

[0018] In the diagram: 1. Cylinder; 2. Lead screw; 3. Nut; 4. Piston rod; 5. First bolt; 6. Anti-rotation key; 7. Keyway; 8. Second bolt; 9. Disassembly port; 10. Sealing plate; 11. Third bolt; 12. Filler plate; 21. Mounting base; 22. Driven gear; 23. Transmission gear; 24. Drive gear; 25. Drive source. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] See attached document Figure 1-4A servo press includes a cylinder 1, wherein one end of a lead screw 2 is rotatably mounted inside the cylinder 1 via a bearing, a lead screw nut 3 is threadedly connected to the outer wall of the lead screw 2, a piston rod 4 that moves synchronously with the lead screw nut 3 is provided on the outer wall of the lead screw nut 3, an anti-rotation key 6 is provided on the inner wall of the cylinder 1 along its axial direction, and a keyway 7 that matches the anti-rotation key 6 is provided on the outer wall of the piston rod 4 to restrict the piston rod 4 from rotating relative to the cylinder 1. When the lead screw 2 rotates, under the restriction of the anti-rotation key 6, the piston rod 4 and the lead screw nut 3 will move along the axial direction of the lead screw 2, thereby realizing the linear pressure output of the press;

[0021] Compared to limiting the movement of the piston rod 4 by restricting the outer wall of the nut 3, the anti-rotation key 6 directly limits the outer wall of the piston rod 4, providing an additional support for the piston rod 4. This support cooperates with the inner wall of the cylinder 1, so that the piston rod 4 is subjected to a more uniform constraint force during movement, which enhances the stability of the entire structure, reduces the vibration of the piston rod 4 during operation, and improves its service life.

[0022] In this embodiment, the nut 3 and the piston rod 4 are fixed together by a plurality of first bolts 5, forming a detachable connection. The plurality of first bolts 5 are arranged along the axial direction of the lead screw 2. The keyway 7 passes through the end of the piston rod 4 facing the inside of the cylinder 1. The outer wall of the cylinder 1 is provided with a disassembly port 9, which extends along the axial direction of the cylinder 1 and corresponds to the first bolts 5. When it is necessary to replace or repair the piston rod 4, the first bolts 5 can be completely removed through the disassembly port 9 using a tool. At this time, the piston rod 4 can be moved relative to the nut 3. Then the piston rod 4 can be pulled out and quickly removed. When installing, a new piston rod 4 is inserted and then fixed by the first bolts 5. It is not necessary to disassemble the entire cylinder 1, which greatly simplifies the maintenance process and shortens the maintenance time.

[0023] In this embodiment, a sealing plate 10 is provided on the outside of the disassembly port 9. The sealing plate 10 is connected to the cylinder 1 by several third bolts 11. The sealing plate 10 can prevent external dust and impurities from entering the cylinder 1 through the disassembly port 9.

[0024] In this embodiment, the anti-rotation key 6 is connected to the cylinder 1 by several second bolts 8 to ensure that the anti-rotation key 6 is firmly installed and will not shift during operation. Its detachability also makes it convenient to replace it as needed.

[0025] In this embodiment, a plurality of filler plates 12 are provided between the inner wall of the cylinder 1 and the outer wall of the piston rod 4. The filler plates 12 have an arc-shaped structure and surround the outer wall of the piston rod 4, playing a supporting role and reducing the shaking and displacement of the piston rod 4 during the movement.

[0026] In this embodiment, a mounting base 21 is provided at one end of the cylinder 1. A driven gear 22 connected to the end of the lead screw 2 is provided inside the mounting base 21. A transmission gear 23 is meshed with the outer wall of the driven gear 22. A drive gear 24 is meshed with the outer wall of the transmission gear 23. A drive source 25 is provided on one side of the drive gear 24 to drive its rotation. The drive source 25 can be a device that can provide rotational power, such as an electric motor or a hydraulic motor. When the drive source 25 is working, the drive gear 24 drives the transmission gear 23 to rotate, which in turn drives the driven gear 22 to rotate the lead screw 2, thereby realizing the linear motion of the piston rod 4.

[0027] An oil inlet pipe is provided on the mounting base 21, which is not shown in the figure. One end of the oil inlet pipe extends into the mounting base 21 and is set on the transmission gear 23. Lubricating oil can be added to the three gears through the oil inlet pipe to reduce gear wear.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A servo press comprising a cylinder (1), characterized by: The cylinder (1) is rotatably connected to a lead screw (2), and the outer wall of the lead screw (2) is threadedly connected to a nut (3). The outer wall of the nut (3) is provided with a piston rod (4) that moves synchronously with it. The inner wall of the cylinder (1) is provided with an anti-rotation key (6) extending along its axial direction. The outer wall of the piston rod (4) is provided with a keyway (7) that matches the anti-rotation key (6) to restrict the piston rod (4) from rotating relative to the cylinder (1).

2. A servo press as claimed in claim 1, characterized in that: The nut (3) is fixed to the piston rod (4) by a plurality of first bolts (5), which are arranged axially along the lead screw (2). The keyway (7) passes through one end of the piston rod (4) facing the inside of the cylinder (1). The outer wall of the cylinder (1) is provided with a disassembly port (9), which extends axially along the cylinder (1) and corresponds to the first bolts (5).

3. A servo press as claimed in claim 2, characterized in that: The disassembly port (9) is provided with a sealing plate (10), and the sealing plate (10) is connected to the cylinder (1) by a number of third bolts (11).

4. A servo press as claimed in claim 1, characterized in that: The anti-rotation key (6) is connected to the cylinder (1) by several second bolts (8).

5. A servo press as claimed in claim 1, characterized in that: Several filler plates (12) are provided between the inner wall of the cylinder (1) and the outer wall of the piston rod (4).

6. A servo press as claimed in claim 1, characterized in that: One end of the cylinder (1) is provided with a mounting base (21), and the mounting base (21) is provided with a driven gear (22) connected to the end of the lead screw (2). The outer wall of the driven gear (22) is meshed with a transmission gear (23), and the outer wall of the transmission gear (23) is meshed with a drive gear (24). One side of the drive gear (24) is provided with a drive source (25) to drive its rotation.

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