Transverse press rack plate, design method thereof and transverse press
By setting a semicircular arc recess at the maximum stress point of the opening of the transverse press frame plate, the problems of insufficient strength and uneven pressure distribution of the frame plate are solved, and better resistance to deformation and stability are achieved. Ensures efficient and long-lasting operation of the equipment.
Patent Information
- Application Number
- CN202411689664.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-01-07
AI Technical Summary
The existing lateral press frame plates have problems such as insufficient strength and uneven pressure distribution during use, resulting in uneven surface concave and convexity of finished plates, and welding reinforcement ribs will cause problems such as heat-affected zone deformation, residual stress and joint defects. Impacts the working accuracy and service life of the equipment.
The maximum stress point of the opening of the frame plate is set up outwardly, and the semicircular arc recess design is adopted. The allowable stress and deformation amount are determined through finite element analysis to ensure the radius of the arc recess In the range of 0.032 to 0.034 times, the stress dispersion area is increased and stress concentration is avoided.
It effectively improves the overall strength and stability of the frame plate, avoids deformation and fracture, ensures the reliability and efficiency of the press during long-term operation, reduces costs and avoids the negative impact of welding.
Smart Images
Figure CN119261282A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a frame plate of a transverse press and a design method thereof and a transverse press. Background Art
[0002] With the improvement of industrial automation level, the requirements for mechanical equipment are also constantly increasing, especially in the field of material forming and processing, such as the pressing and forming process of wood, composite materials, etc., the transverse press is one of the key equipment, and its performance directly affects the quality and production efficiency of the final product. However, most of the transverse presses on the current market are mainly concentrated in the mid-to-low-end market. These equipment have many shortcomings during use, especially the quality problems of finished boards are particularly prominent. Common quality problems include but are not limited to the uneven surface of the finished board, which is often caused by insufficient strength of the frame plate and the hot press plate and uneven pressure distribution.
[0003] The existing press frame plates on the market are mostly made of small-sized steel plates spliced and welded. Although this approach can effectively reduce costs, it also brings obvious disadvantages - the heat-affected zone during welding is prone to deformation, and the strength of the welded joints will also decrease. Under long-term use, the frame plate may undergo irreversible deformation, which in turn affects the working accuracy and service life of the press.
[0004] In order to solve the above problems, the technicians used a whole large plate instead of the traditional small-size steel plate welding method for manufacturing, selected Q355B low-alloy high-strength structural steel as the material, and formed it through overall processing. This method not only improves the strength of the frame plate, but also effectively reduces the negative impact of welding. However, there are openings on the frame plate to provide space for installation and maintenance of internal components such as hydraulic systems and electrical control systems. The cylinders are connected to the frame plate body through these openings through connectors. Since the openings need to bear the gravity of multiple cylinders, the frame plate is very easy to deform at this location.
[0005] Therefore, it is necessary to optimize the opening size and shape of the original rack plate to enhance the load-bearing capacity and anti-deformation ability of the rack plate. Summary of the invention
[0006] The purpose of the present invention is to provide a transverse press frame plate and a design method thereof and a transverse press to solve the technical problems mentioned in the above background technology.
[0007] The technical solution to achieve the purpose of the present invention is: a horizontal press frame plate, including a frame plate body, and an opening that penetrates the inside of the frame plate body, and an inwardly recessed arc-shaped recess is provided at the maximum stress point of the opening or near the maximum stress point.
[0008] The frame plate of the transverse press of the present invention is provided with an arc-shaped recess protruding outward at the maximum stress point of the opening, which effectively increases the area of stress dispersion, not only enabling the frame plate to better withstand the external force brought by the oil cylinder installed thereon, but also preventing the frame plate from being significantly deformed or even broken; compared with the method of increasing the thickness or adding reinforcing ribs at the maximum stress point, the design of the present invention is more economical and efficient. Increasing the thickness or installing reinforcing ribs will not only increase the cost, but also there may not be enough space to add reinforcing ribs on the frame plate because other necessary components have been installed; in addition, although welding reinforcing ribs can locally improve the strength of the frame plate, it will also bring a series of negative effects, including: welding heat Changes in the microstructure of the affected area: high temperature will cause grain coarsening and phase transformation in the heat affected zone (HAZ) of welding, reducing the plasticity and toughness of the material; generation of residual stress: uneven heating and cooling will generate residual stress inside the frame plate, leading to microcracks, reducing fatigue resistance and deformation resistance; joint defects: problems such as pores, slag inclusions, and incomplete penetration will become the source of stress concentration, reducing the strength and reliability of the welded joint; changes in structural stiffness: welding reinforcement ribs change the local stiffness, which may lead to uneven stress distribution and increase the risk of deformation or cracking; therefore, the present invention not only avoids the above problems by providing an outwardly protruding arc-shaped recess, but also effectively improves the overall strength and stability of the frame plate.
[0009] Furthermore, a circular arc is used for smooth transition between the arc-shaped recess and the top edge, as well as between the two side edges; this not only effectively increases the stress dispersion area, but also avoids stress concentration that may occur at sharp corners.
[0010] Furthermore, the arc-shaped recess adopts a semicircular arc-shaped recess; the arc-shaped recess of the present invention adopts a semicircular arc-shaped recess. Compared with rectangular, triangular and other shapes, the use of a semicircular arc-shaped recess effectively increases the stress dispersion area, and also avoids the stress concentration phenomenon that may occur at sharp corners. The stress dispersion surface is larger and more uniform.
[0011] Furthermore, the radius of the semicircular arc-shaped recess is 0.032 to 0.034 times the distance between the centers of the two semicircular arc-shaped recesses.
[0012] The radius of the semicircular arc recess of the present invention is 0.032 to 0.034 times the distance between the centers of the two semicircular arc recesses. The semicircular arc recess design within this range enables the opening of the frame plate to better meet the use requirements of the transverse press, showing excellent anti-deformation effect and strength. When the frame plate is subjected to high loads, it can maintain better stability and durability, ensuring the reliability and efficiency of the press during long-term operation.
[0013] The present invention provides a design method for a frame plate of a transverse press, comprising the following steps:
[0014] Ⅰ. Determine the limit value σ of material strength lim , safety factor S, allowable deformation [y];
[0015] Ⅱ. Calculate the allowable stress σ according to formula (1) p ;
[0016] III. The maximum stress point and maximum deformation of the existing transverse press frame plate are analyzed by finite element analysis, and an arc notch is set at or near the maximum stress point to improve the structure of the transverse press frame plate;
[0017] IV. The frame plate of the horizontal press with improved structure is subjected to stress analysis and maximum deformation analysis by finite element analysis to obtain the maximum deformation y and the maximum stress σ;
[0018] V. According to the maximum deformation y and the maximum stress σ, the allowable deformation [y] and the allowable stress σ are respectively p Compare and judge whether the improved horizontal press frame plate meets the requirements for the use of the horizontal press.
[0019] The design method of the horizontal press frame plate of the present invention is to determine the limit value σ of the material strength. lim , safety factor S to determine the allowable stress σ p The allowable deformation [y] is also determined, and the maximum stress point and maximum deformation of the existing transverse press frame plate are analyzed by finite element analysis. An arc-shaped recess is set at the maximum stress point or near the maximum stress point to improve the structure of the transverse press frame plate. After the structure is improved, the finite element analysis method is used again to perform stress analysis and maximum deformation analysis on the improved transverse press frame plate. The maximum deformation y and maximum stress σ obtained by the analysis are compared with the allowable deformation [y] and the allowable stress σp, respectively, to determine whether the improved transverse press frame plate meets the use requirements of the transverse press. Through this method, it can be ensured that the frame plate has good deformation resistance and overall strength when subjected to high loads, thereby improving the stability and reliability of the transverse press. The design method is simple and effective, and can significantly improve the performance and service life of the transverse press.
[0020] Furthermore, the formula (1) is σ p =σ lim / S, where σ p is the allowable stress, σ lim is the limit value of material strength, and S is the safety factor.
[0021] Furthermore, the judgment criteria for whether the improved transverse press frame plate meets the requirements for the use of the transverse press are: simultaneously satisfying σ≤σ p, and y≤[y]; where σ is the maximum stress, σ p is the allowable stress, y is the maximum deformation, and [y] is the allowable deformation.
[0022] The judgment standard of whether the improved horizontal press frame plate of the present invention meets the use requirements of the horizontal press is to simultaneously meet σ≤σ p , and y≤[y]. Under this judgment standard, it can be ensured that the frame plate has good anti-deformation ability and overall strength when subjected to high loads, meets the use requirements of the transverse press, and shows excellent anti-deformation effect and strength. The frame plate can maintain better stability and durability when subjected to high loads, ensuring the reliability and efficiency of the press during long-term operation.
[0023] Furthermore, the safety factor S is 1.8 or 1.9, and the allowable deformation [y] is 2.5 mm.
[0024] The safety factor S of the present invention is 1.8 or 1.9, which can ensure that the frame plate has sufficient safety margin in actual use and can maintain structural integrity and stability even under extreme conditions; the allowable deformation [y] of the frame plate is 2.5 mm. By limiting the maximum deformation of the frame plate, product quality problems caused by excessive deformation can be effectively avoided, thereby ensuring that the pressed plate has good flatness and consistency, and ensuring that the plate pressed by the horizontal press of the frame plate meets industry standards.
[0025] The present invention provides a transverse press, comprising four transverse press frame plates and eight oil cylinders fixedly installed on the transverse press frame plates; the four transverse press frame plates are spliced in pairs to form a rectangular accommodating cavity, the eight oil cylinders are arranged in the rectangular accommodating cavity, the eight oil cylinders are divided into two rows and four columns, and the two rows of oil cylinders are fixedly installed on the transverse press frame plates on the front and rear sides.
[0026] The transverse press of the present invention adopts the transverse press frame plate of the aforementioned design and the improved transverse press frame plate, which improves the deformation resistance and overall strength of the frame plate. The four transverse press frame plates can withstand eight oil cylinders without deformation, thereby ensuring the stability and reliability of the transverse press, thereby enabling the transverse press to maintain efficient performance and high-quality pressing effects during long-term operation.
[0027] Furthermore, the two rows of cylinders are symmetrical and spaced apart on both sides of the transverse center line of the rectangular accommodating cavity, the four columns of cylinders are symmetrically arranged on both sides of the longitudinal center line of the rectangular accommodating cavity, and the transverse spacing between two adjacent columns of cylinders is equal.
[0028] The two rows of cylinders of the present invention are symmetrical and spaced apart on both sides of the transverse center line of the rectangular accommodating cavity, the four columns of cylinders are symmetrically arranged on both sides of the longitudinal center line of the rectangular accommodating cavity, and the transverse spacings of two adjacent columns of cylinders are equal, ensuring that the four frame plates equally bear the force of the eight cylinders. This layout not only makes the structure more compact, but also ensures the uniform distribution of pressure, thereby improving the stability and reliability of the transverse press, and further enabling the transverse press to maintain efficient performance and high-quality pressing effects during long-term operation.
[0029] By adopting the above technical solution, the present invention has the following beneficial effects:
[0030] (1) The frame plate of the transverse press of the present invention is provided with an arc-shaped recess protruding outward at the maximum stress point of the opening, thereby effectively increasing the area of stress dispersion, which not only enables the frame plate to better withstand the external force brought by the oil cylinder installed thereon, but also prevents the frame plate from being significantly deformed or even broken; compared with the method of increasing the thickness or adding reinforcing ribs at the maximum stress point, the design of the present invention is more economical and efficient. Increasing the thickness or installing reinforcing ribs not only increases the cost, but also there may not be enough space to add reinforcing ribs on the frame plate because other necessary components have been installed; in addition, although welding reinforcing ribs can locally improve the strength of the frame plate, it will also bring a series of negative effects, including: welding Microstructural changes in the heat-affected zone: high temperature will cause grain coarsening and phase change in the welding heat-affected zone (HAZ), reducing the plasticity and toughness of the material; generation of residual stress: uneven heating and cooling will generate residual stress inside the frame plate, leading to microcracks, reducing fatigue resistance and deformation resistance; joint defects: problems such as pores, slag inclusions, and incomplete penetration will become the source of stress concentration, reducing the strength and reliability of the welded joint; changes in structural stiffness: welding reinforcement ribs change the local stiffness, which may lead to uneven stress distribution and increase the risk of deformation or cracking; therefore, the present invention not only avoids the above problems by providing an outwardly protruding arc-shaped recess, but also effectively improves the overall strength and stability of the frame plate.
[0031] (2) The arc-shaped notch of the present invention has a smooth transition with the top edge and the two side edges, which not only effectively increases the stress dispersion area, but also avoids the stress concentration phenomenon that may occur at sharp corners.
[0032] (3) The arc-shaped recess of the present invention adopts a semicircular arc-shaped recess. Compared with rectangular, triangular and other shapes, the semicircular arc-shaped recess effectively increases the stress dispersion area and avoids the stress concentration phenomenon that may occur at sharp corners. The stress dispersion surface is larger and more uniform.
[0033] (4) The radius of the semicircular arc recess of the present invention is 0.032 to 0.034 times the distance between the centers of the two semicircular arc recesses. The design of the semicircular arc recess within this range enables the opening of the frame plate to better meet the use requirements of the transverse press, showing excellent anti-deformation effect and strength. When the frame plate is subjected to high loads, it can maintain better stability and durability, ensuring the reliability and efficiency of the press during long-term operation.
[0034] (5) The design method of the transverse press frame plate of the present invention determines the allowable stress σp by determining the limit value σlim of the material strength and the safety factor S, and also determines the allowable deformation [y]. The maximum stress point and maximum deformation of the existing transverse press frame plate are analyzed by finite element analysis, and an arc-shaped recess is set at the maximum stress point or near the maximum stress point to improve the structure of the transverse press frame plate. After the structure is improved, the finite element analysis method is used again to perform stress analysis and maximum deformation analysis on the improved transverse press frame plate. The maximum deformation y and maximum stress σ obtained by the analysis are compared with the allowable deformation [y] and the allowable stress σp, respectively, to determine whether the improved transverse press frame plate meets the use requirements of the transverse press. Through this method, it can be ensured that the frame plate has good deformation resistance and overall strength when subjected to high loads, thereby improving the stability and reliability of the transverse press. The design method is simple and effective, and can significantly improve the performance and service life of the transverse press.
[0035] (6) The criterion for judging whether the improved frame plate of the transverse press of the present invention meets the use requirements of the transverse press is to simultaneously satisfy σ≤σp and y≤[y]. Under this criterion, it can be ensured that the frame plate has good anti-deformation ability and overall strength when subjected to high loads, meets the use requirements of the transverse press, and exhibits excellent anti-deformation effect and strength. When subjected to high loads, the frame plate can maintain better stability and durability, thereby ensuring the reliability and efficiency of the press during long-term operation.
[0036] (7) The safety factor S of the present invention is 1.8 or 1.9, which can ensure that the frame plate has sufficient safety margin in actual use and can maintain structural integrity and stability even under extreme conditions.
[0037] (8) The allowable deformation [y] of the frame plate of the present invention is 2.5 mm. By limiting the maximum deformation of the frame plate, product quality problems caused by excessive deformation can be effectively avoided, thereby ensuring that the pressed plate has good flatness and consistency, and ensuring that the plate pressed by the horizontal press of the frame plate meets industry standards.
[0038] (9) The transverse press of the present invention adopts the transverse press frame plate of the aforementioned design and adopts an improved transverse press frame plate, which improves the deformation resistance and overall strength of the frame plate. The four transverse press frame plates can withstand eight oil cylinders without deformation, thereby ensuring the stability and reliability of the transverse press, thereby enabling the transverse press to maintain high-efficiency performance and high-quality pressing effects during long-term operation.
[0039] (8) The two rows of cylinders of the present invention are symmetrical and spaced apart on both sides of the transverse center line of the rectangular accommodating cavity, and the four columns of cylinders are symmetrically arranged on both sides of the longitudinal center line of the rectangular accommodating cavity. The transverse spacing between two adjacent columns of cylinders is equal, ensuring that the four frame plates equally bear the force of the eight cylinders. This layout not only makes the structure more compact, but also ensures the uniform distribution of pressure, thereby improving the stability and reliability of the transverse press, thereby enabling the transverse press to maintain high-efficiency performance and high-quality pressing effects during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein
[0041] Figure 1 It is a structural schematic diagram of the frame plate of the transverse press of the present invention.
[0042] Figure 2 It is a front view of the transverse press of the present invention.
[0043] Figure 3 It is a top view of the transverse press of the present invention.
[0044] Figure 4 This is the stress analysis diagram of the existing transverse press frame plate.
[0045] Figure 5 This is the deformation analysis diagram of the existing transverse press frame plate.
[0046] Figure 6 It is a stress analysis diagram of a frame plate of a transverse press according to an embodiment of the present invention.
[0047] Figure 7 This is a deformation analysis diagram of a frame plate of a transverse press according to an embodiment of the present invention.
[0048] The reference numerals in the accompanying drawings are: horizontal press frame plate 1, frame plate body 1-1, opening 1-2, arc-shaped recess 1-2-1, and oil cylinder 2. DETAILED DESCRIPTION
[0049] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0052] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0053] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They 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 understood as a limitation on the present invention.
[0054] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.
[0055] (Method Example)
[0056] The present invention provides a design method for a frame plate of a transverse press, comprising the following steps:
[0057] Ⅰ. Determine the limit value σ of material strengthlim , safety factor S, allowable deformation [y]; where the limit value of material strength σ lim =Equal to the upper yield strength of the material and thickness of the frame plate body. The frame plate body of this embodiment is made of Q355B low-alloy high-strength structural steel with a thickness of 80 mm. The corresponding upper yield strength is 325 MPa. Therefore, the limit value of material strength σ lim The safety factor S is 325MPa; the range of the safety factor S is based on the safety factor S = 1.2 to 2 for anti-deformation disclosed on page 120 of the first chapter of the first part of the Mechanical Design Manual (Sixth Edition)_Chengdaxian published by Chemical Industry Press, and the safety factor S is selected as 1.8 or 1.9 based on the cost and the need to ensure that the frame plate has sufficient safety margin in actual use and that the frame plate can maintain structural integrity and stability under extreme conditions; based on industry experience and the need to ensure that the plate pressed out of the transverse press of the frame plate meets industry standards, the allowable deformation [y] is 2.5mm.
[0058] Ⅱ. Calculate the allowable stress σ according to formula (1) p ; Formula (1) is σ p =σ lim / S, where σ p is the allowable stress, σ lim is the limit value of material strength, S is the safety factor;
[0059] III. The maximum stress point and maximum deformation of the existing transverse press frame plate are analyzed by finite element analysis, and an arc notch is set at or near the maximum stress point to improve the structure of the transverse press frame plate;
[0060] IV. The frame plate of the horizontal press with improved structure is subjected to stress analysis and maximum deformation analysis by finite element analysis to obtain the maximum deformation y and the maximum stress σ;
[0061] V. According to the maximum deformation y and the maximum stress σ, the allowable deformation [y] and the allowable stress σ are respectively p Compare and judge whether the improved frame plate of the transverse press meets the requirements for the use of the transverse press; the judgment standard for whether the improved frame plate of the transverse press meets the requirements for the use of the transverse press is: both satisfy σ≤σ p , and y≤[y]; where σ is the maximum stress, σ p is the allowable stress, y is the maximum deformation, and [y] is the allowable deformation.
[0062] Figure 4 , 5 They are the analysis diagrams of the maximum stress point and maximum deformation of the existing horizontal press frame plate after step III. In the figure, the maximum stress σ1 is 228.6MPa, σ p =σlim / S=325 / 1.8=180.5MPa,σ1>σ p , the maximum deformation y1 is 2.546mm, [y] = 2.5mm, y1> [y], does not satisfy σ1≤σ p , and y1≤[y], so it is unqualified; an arc-shaped notch is set at or near the maximum stress point to improve the structure of the frame plate of the transverse press, Figure 1 The structure of the transverse press frame plate of one embodiment of the transverse press frame plate improved by providing an arc-shaped notch near the maximum stress point, Figure 6 , 7 They are respectively the stress analysis diagram and deformation analysis diagram of the stress analysis of the improved transverse press frame plate according to step IV. The maximum stress σ2 of the improved transverse press frame plate is 170.2Mpa, σ p =σ lim / S=325 / 1.8=180.5MPa,σ2<σ p , the maximum deformation y2 is 2.436mm, y2<[y], so it is qualified.
[0063] (Example of Horizontal Press Frame Plate)
[0064] See Figure 1 A horizontal press frame plate 1 comprises a frame plate body 1-1 and an opening 1-2 which is arranged inside the frame plate body 1-1, wherein the opening 1-2 is a rectangular opening, and an arc-shaped recess 1-2-1 protruding outward is arranged between the top edge and two side edges of the rectangular opening; a circular arc is used to smoothly transition between the arc-shaped recess 1-2-1 and the top edge and the two side edges; the arc-shaped recess 1-2-1 adopts a semicircular arc-shaped recess 1-2-1; the radius of the semicircular arc-shaped recess 1-2-1 is 0.032 to 0.034 times the distance between the centers of the two semicircular arc-shaped recesses 1-2-1; the frame plate body 1-1 is made of Q355B low-alloy high-strength structural steel with a thickness of 63 to 80 mm.
[0065] (Transverse Press Example)
[0066] See Figures 2-3 A transverse press comprises four transverse press frame plates 1, which are spliced in pairs to form a rectangular accommodating cavity, in which eight oil cylinders 2 are arranged, and the eight oil cylinders 2 are divided into two rows and four columns. The two rows of oil cylinders 2 are symmetrical and the spacing is arranged in the accommodating cavity on both sides of the transverse center line. The two rows of oil cylinders 2 are fixedly installed on the front and rear sides of the transverse press frame plates. The four columns of oil cylinders 2 are symmetrically arranged in the accommodating cavity on both sides of the longitudinal center line, and the transverse spacing between two adjacent columns of oil cylinders 2 is equal.
[0067] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A horizontal press frame plate, characterized in that: The invention comprises a frame plate body and an opening which is arranged through the frame plate body. An arc-shaped notch which is recessed inwards is arranged at the maximum stress point of the opening or at a position close to the maximum stress point.
2. The frame plate of the transverse press according to claim 1, characterized in that: The arc-shaped notch and the top edge, as well as the two side edges, adopt arc-shaped smooth transition.
3. The frame plate of the transverse press according to claim 1, characterized in that: The arc-shaped recess is a semicircular arc-shaped recess.
4. The frame plate of the transverse press according to claim 1, characterized in that: The radius of the semicircular arc-shaped notch is 0.032 to 0.034 times the distance between the centers of the two semicircular arc-shaped notches.
5. A method for designing a frame plate of a transverse press as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: Ⅰ. Determine the limit value σ of material strength lim , safety factor S, allowable deformation [y]; Ⅱ. Calculate the allowable stress σp according to formula (1); Ⅲ. Use finite element analysis to analyze the maximum stress point and maximum deformation of the existing transverse press frame plate, and set a stress dispersion unit at or near the maximum stress point to improve the structure of the transverse press frame plate; IV. The frame plate of the horizontal press with improved structure is subjected to stress analysis and maximum deformation analysis by finite element analysis to obtain the maximum deformation y and the maximum stress σ; V. According to the maximum deformation y and the maximum stress σ, the allowable deformation [y] and the allowable stress σ are respectively p Compare and judge whether the improved horizontal press frame plate meets the requirements for the use of the horizontal press.
6. The design method of the frame plate of the transverse press according to claim 5, characterized in that: The formula (1) is σ p =σ lim / S, where σ p is the allowable stress, σ lim is the limit value of material strength, and S is the safety factor.
7. The design method of the frame plate of the transverse press according to claim 5, characterized in that: The judgment criteria for the improved horizontal press frame plate to meet the requirements for the use of the horizontal press are: at the same time satisfying σ≤σ p , and y≤[y]; where σ is the maximum stress, σ p is the allowable stress, y is the maximum deformation, and [y] is the allowable deformation.
8. The design method of the frame plate of the transverse press according to claim 5 or 7, characterized in that: The safety factor S is 1.8 or 1.9, and the allowable deformation [y] is 2.5 mm.
9. A transverse press, characterized in that: It comprises four transverse press frame plates as described in any one of claims 1 to 4, and eight oil cylinders fixedly mounted on the transverse press frame plates; the four transverse press frame plates are spliced in pairs to form a rectangular accommodating cavity, the eight oil cylinders are arranged in the rectangular accommodating cavity, the eight oil cylinders are divided into two rows and four columns, and the two rows of oil cylinders are fixedly mounted on the transverse press frame plates on the front and rear sides.
10. The transverse press according to claim 9, characterized in that The two rows of oil cylinders are symmetrical and spaced apart on both sides of the transverse center line of the rectangular accommodating cavity. The four columns of oil cylinders are symmetrically arranged on both sides of the longitudinal center line of the rectangular accommodating cavity. The transverse spacings between two adjacent columns of oil cylinders are equal.