Pre-tightening auxiliary mechanism for press
By designing a preloading auxiliary mechanism including a "return" font-shaped pressing plate in the press, the problems of complex operation and low accuracy of the traditional screw preloading method are solved, and high automation and precise preloading force adjustment are achieved.
Patent Information
- Application Number
- CN202421770381.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The traditional screw preloading method has problems such as complex operation, low accuracy and low efficiency in the press, making it difficult to achieve high automation and accurate preloading.
A preloading auxiliary mechanism for a press is designed, including a base, a top and a middle seat. The lower part of the middle seat is equipped with a "back" shape press plate. The press plate is driven down by a power unit (such as an oil cylinder) and pre-tighten the screw to adjust the oil pressure to achieve adjustment of the preload force.
It realizes auxiliary pretension for the product, can adjust the pretension force, solves the problem of uneven pretension force, and improves the degree of automation and accuracy of the pretension process.
Smart Images
Figure CN222844864U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of presses, and in particular relates to a pre-tightening auxiliary mechanism used in a press. Background Art
[0002] A press is a device that provides certain temperature and pressure conditions to bond materials together or form them into a specific shape. Its working principle is to press or bond materials (such as plastics, wood, composite materials, etc.) through pressure. It is widely used in the industrial field.
[0003] Generally, a press machine has a screw pre-tightening mechanism. As a key step in mechanical assembly, the stability and reliability of screw pre-tightening have an important impact on the performance of the whole machine. However, the traditional screw pre-tightening method often has problems such as complex operation, low precision, and low efficiency. Therefore, the development of a new screw pre-tightening auxiliary mechanism to improve the automation and precision of the pre-tightening process has become an urgent problem to be solved in the current machinery industry, and this application has conducted research in this direction. Utility Model Content
[0004] In view of the deficiencies in the above-mentioned prior art, the utility model provides a pre-tightening auxiliary mechanism for use in a press. After the pre-tightening auxiliary mechanism is installed, the product can be assisted in pre-tightening, the pre-tightening force can be adjusted during the auxiliary pre-tightening process, and the phenomenon of uneven pre-tightening force can be solved.
[0005] The utility model solves the problem through the following technical solutions.
[0006] A pre-tightening auxiliary mechanism used in a press comprises a base and a top seat, wherein the base and the top seat are connected together by a vertically arranged guide rod body, a middle seat which can be moved up and down for applying downward pressure is arranged between the base and the top seat, a pre-tightening auxiliary mechanism is arranged at the lower part of the middle seat, and the pre-tightening auxiliary mechanism comprises a "U"-shaped pressure plate, a through cavity is arranged in the center of the pressure plate, and a plurality of through holes are arranged around the pressure plate; a protruding pressure block is arranged on the lower surface of the middle seat, and the pressure block can be pressed into the through cavity on the pressure plate; the pressure plate is driven to move by a power unit.
[0007] When the pre-tightening auxiliary mechanism in the present application is used, after the product is pressed, the pre-tightening auxiliary mechanism starts to move, and the "U"-shaped pressing plate starts to descend and pre-tighten the product screw under the drive of the power unit (such as: oil cylinder) until the required locking force is reached, and finally the nut on the screw is tightened by an external tool or a manipulator. After all the nuts are tightened, the "U"-shaped pressing plate rises, and then the middle seat rises back to its position, completing the entire pre-tightening auxiliary operation. At the same time, during the pre-tightening process, the pre-tightening force can be adjusted by adjusting the oil pressure, which is easy to operate.
[0008] In a preferred embodiment, extension blocks are provided on the four corners of the pressure plate, and guide holes are provided on the extension blocks. The guide rods pass through the guide holes and can slide relatively, thereby ensuring good guidance of the pressure plate for up and down movement and ensuring uniform application of the preload force.
[0009] In a preferred embodiment, the power unit is an oil cylinder, which is fixed on an intermediate plate, and the intermediate plate is arranged on the lower surface of the middle seat; the driving rod of the oil cylinder extends downward and is fixed on the extension block, and the assembly structure is compact and highly stable.
[0010] In a preferred embodiment, the middle seat is driven by a main oil cylinder arranged at the upper part to move up and down; the main oil cylinder passes through the top seat and is connected to the middle seat.
[0011] In a preferred embodiment, four guide rods are provided at the four corners of the base and the top seat, and the structure is stable and the guiding property is good.
[0012] Compared with the prior art, the utility model has the following beneficial effects: it provides a pre-tightening auxiliary mechanism for use in a press, which can assist in pre-tightening the product after the pre-tightening auxiliary mechanism is installed, can adjust the pre-tightening force during the auxiliary pre-tightening process, and can solve the problem of uneven pre-tightening force. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the preload auxiliary mechanism in this application.
[0014] Figure 2 The three-dimensional preload auxiliary mechanism in this application Figure 1 .
[0015] Figure 3 The three-dimensional preload auxiliary mechanism in this application Figure 2 .
[0016] Figure 4 It is a schematic diagram of the middle seat and the pressure plate in this application.
[0017] Figure 5 It is a three-dimensional diagram of the middle seat and the pressure plate in this application.
[0018] Figure 6 It is a three-dimensional diagram of the pressing plate in this application. DETAILED DESCRIPTION
[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0020] In the following embodiments, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0021] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.
[0022] See also Figures 1 to 6 The utility model relates to a pre-tightening auxiliary mechanism for a press, comprising a base 3 and a top seat 1, wherein the base 3 and the top seat 1 are connected together by a vertically arranged guide rod body 4, and a middle seat 2 movable up and down for applying downward pressure is arranged between the base 3 and the top seat 1, characterized in that a pre-tightening auxiliary mechanism is arranged at the lower part of the middle seat 2, and the pre-tightening auxiliary mechanism comprises a "U"-shaped pressing plate 5, wherein the pressing plate 5 has a through cavity 52 in the center, and a plurality of through holes 57 are arranged around the pressing plate 5; a protruding pressing block 21 is arranged on the lower surface of the middle seat 2, and the pressing block 21 can be pressed into the through cavity 52 on the pressing plate 51; the pressing plate 5 is driven to move by a power unit 53.
[0023] Specifically, it can be seen from the accompanying drawings that in the present application, extension blocks 51 are provided on the four corners of the pressure plate 5, and guide holes 511 are provided on the extension blocks 51. The guide rod body 4 passes through the guide holes 511 and can slide relatively, thereby ensuring good guidance of the up and down movement of the pressure plate 5 and ensuring uniform application of the preload force.
[0024] In the present application, the power unit 53 is a cylinder, which is fixed on the middle plate 23, and the middle plate 23 is arranged on the lower surface of the middle seat 2; the driving rod of the cylinder extends downward and is fixed on the extension block 51, and the assembly structure is compact and highly stable. The middle seat 2 is driven by the main cylinder 25 arranged at the top to move up and down; the main cylinder 25 passes through the top seat 1 and is connected to the middle seat 2.
[0025] In the present application, four guide rods 4 are provided at the four corners of the base 3 and the top seat 1, and the structure is stable and the guiding performance is good.
[0026] When the pre-tightening auxiliary mechanism in the present application is used, after the product is pressed, the pre-tightening auxiliary mechanism starts to move, and the "U"-shaped pressing plate starts to descend and pre-tighten the product screw under the drive of the power unit (such as: oil cylinder) until the required locking force is reached, and finally the nut on the screw is tightened by an external tool or a manipulator. After all the nuts are tightened, the "U"-shaped pressing plate rises, and then the middle seat rises back to its position, completing the entire pre-tightening auxiliary operation. At the same time, during the pre-tightening process, the pre-tightening force can be adjusted by adjusting the oil pressure, which is easy to operate.
[0027] As described above, the utility model provides a pre-tightening auxiliary mechanism for use in a press. After the pre-tightening auxiliary mechanism is installed, the product can be assisted in pre-tightening, the pre-tightening force can be adjusted during the auxiliary pre-tightening process, and the problem of uneven pre-tightening force can be solved.
[0028] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.
Claims
1. A preload auxiliary mechanism for a press, comprising a base (3) and a top seat (1), wherein the base (3) and the top seat (1) are connected together via a vertically arranged guide rod (4), and a middle seat (2) movable up and down for applying downward pressure is arranged between the base (3) and the top seat (1), characterized in that: A pre-tightening auxiliary mechanism is provided at the lower part of the middle seat (2). The pre-tightening auxiliary mechanism comprises a U-shaped pressing plate (5), the pressing plate (5) having a through cavity (52) in the center, and a plurality of through holes (57) on the periphery of the pressing plate (5); A protruding pressing block (21) is provided on the lower surface of the middle seat (2), and the pressing block (21) can be pressed into a through cavity (52) on the pressing plate (5); The pressing plate (5) is driven to move by a power unit (53).
2. A preload auxiliary mechanism for a press according to claim 1, characterized in that: An extension block (51) is provided at each of the four corners of the pressing plate (5), and a guide hole (511) is provided on the extension block (51). The guide rod body (4) passes through the guide hole (511) and can slide relatively thereto.
3. A preload auxiliary mechanism for a press according to claim 2, characterized in that: The power unit (53) is an oil cylinder, which is fixed on an intermediate plate (23) disposed on the lower surface of the middle seat (2); a driving rod of the oil cylinder extends downward and is fixed on the extension block (51).
4. A preload auxiliary mechanism for a press according to claim 3, characterized in that: The middle seat (2) is driven by a main oil cylinder (25) disposed at the upper portion to move up and down; the main oil cylinder (25) passes through the top seat (1) and is connected to the middle seat (2).
5. A preload auxiliary mechanism for a press according to any one of claims 1 to 4, characterized in that: Four guide rods (4) are provided at the four corners of the base (3) and the top seat (1).