A press crown

Abstract

The present invention provides a press crown, which relates to the field of press crowns. The scheme adopted is: comprising a crown body, the crown body is provided with a plurality of limit grids through a grid, the crown body sequentially comprises a guide part 1, a middle part and a guide part 2, the guide part 1 and the guide part 2 are slidably connected to the corresponding inner walls of the press slide, the middle part is provided with m rows of limit grids, m≥2, and the number of the limit grids in each row is the same, the middle parts of the guide part 1 and the guide part 2 are both provided with n limit grids, n<m, and the limit grids of the guide part 1 and the guide part 2 are symmetrically arranged. The present invention has high strength and long service life, reduces the frequency of press shutdown and maintenance, and is conducive to improving production efficiency.

Description

Technical Field

[0001] The invention relates to the field of press crowns, and in particular to a press crown. Background Art

[0002] The slider air cushion of the press plays a vital role in the working process of the press. The slider air cushion is arranged inside the middle layer of the slider. It provides the blanking force when stamping the parts, and can also provide the ejection force when the parts need to be demolded.

[0003] In the prior art, the slider air cushion is mainly composed of top crown, hardened plate, airbag, ejector rod, drain pipe and other parts. A single top crown up and down moving guide rail is provided between the top crown and the slider, and multiple airbag devices are installed above the top crown. In order to make the corresponding airbag device act on the corresponding area of ​​the top crown, the top crown is divided into multiple limit grids of the same size by setting a grid. The limit grids are symmetrically arranged along the width direction of the top crown, and the airbag device is arranged in the corresponding limit grid. Generally speaking, in order to ensure balanced force, the limit grids are symmetrically arranged in two rows. The top of the airbag device is fixedly connected to the slider, and a closed air storage cavity is provided in the slider, which is connected to the inner cavity of the airbag device. A ejector rod is fixed to the bottom of the single top crown, and an ejector rod hole is provided on the bottom plate. The ejector rod is installed on the top crown upside down by a pressure plate, and the lower end of the ejector rod does not protrude from the bottom surface of the ejector rod hole of the slider.

[0004] When using the above technology, especially when stamping larger products such as vehicle covers, after the crown has been working for a period of time, it is often found that the main reinforcement in the middle of the grille is torn, and the crown fails prematurely. The machine must be shut down and replaced. The slider air cushion is located inside the slider and is difficult to repair. Each time, the user needs to shut down for a long time, which seriously affects production efficiency. Summary of the invention

[0005] In order to solve the technical problem of premature failure of the press crown in the above-mentioned prior art, the present invention provides a press crown with high strength and long service life, which reduces the frequency of press shutdown maintenance and is conducive to improving production efficiency.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a press crown, including a crown body, the crown body sequentially including a guide part 1, a middle part and a guide part 2, the guide part 1 and the guide part 2 are slidably connected to the corresponding inner walls of the press slider, the guide part 1, the middle part and the guide part 2 are all separated by a grid with a plurality of limit grids, the sizes of all the limit grids are the same, the middle part is provided with m rows of the limit grids, m≥2, the number of the limit grids in each row is the same and are arranged along the length direction of the crown, the middle parts of the guide part 1 and the guide part 2 are both provided with n limit grids, n<m, and the n limit grids are arranged along the width direction of the crown, and the limit grids of the guide part 1 and the limit grids of the guide part 2 are symmetrically arranged.

[0007] The present invention reduces the number of limit grids at both ends of the top crown body and concentrates the limit grids in the middle of both ends of the top crown body. Compared with the prior art, the length of the middle grid is effectively shortened, thereby shortening the force arm of the middle main reinforcement of the grid, and effectively reducing the torque borne by the middle grid. Under the same working conditions and usage time, the occurrence of tearing failure of the corresponding main reinforcement of the grid is greatly delayed, the service life of the top crown body is extended, the number of shutdowns is reduced, and the production efficiency is improved.

[0008] Furthermore, two guide rail plates 1 are respectively provided on the outer side surfaces of the guide part 1 and the guide part 2, and the guide rail plate 1 can move along the corresponding guide rails on the inner wall of the slider, and the limiting grids of the guide part 1 and the guide part 2 are located between the corresponding two guide rail plates 1. Reinforcing ribs 1 are symmetrically provided at both ends of the guide part 1 and the guide part 2, and the reinforcing ribs 1 are arranged opposite to the corresponding guide rail plates 1 along the length direction of the top crown body.

[0009] The present invention can reserve enough space for setting reinforcing ribs by concentrating the limit grids of the end parts in the middle, thereby enhancing the supporting strength of the position where the guide plate is installed at the end part, delaying the occurrence of deformation at this position, and further extending the service life of the crown body.

[0010] Furthermore, the reinforcing rib 1 is a right-angled trapezoidal structure.

[0011] Furthermore, two reinforcing plates are symmetrically arranged in the limiting grids adjacent to the guide part 1 and the guide part 2 and the corresponding reinforcing rib 1, and the two reinforcing plates are arranged along the width direction of the top crown body.

[0012] The present invention can enhance the strength of the limiting grid adjacent to the reinforcing rib 1 by arranging the reinforcing plate, further enhance the supporting strength of the guide plate for installing the top crown body, and delay the occurrence of deformation.

[0013] Furthermore, the reinforcing plate has a C-shaped structure and its end is a trapezoidal structure.

[0014] Furthermore, two guide rail plates are respectively provided at both ends of the outer side surface of the middle part, and the two guide rail plates can move along the corresponding guide rails on the inner wall of the slider, and the limiting grid of the middle part is located between the two two guide rail plates on the corresponding side.

[0015] Furthermore, a second reinforcing rib is provided at the wide end of the first reinforcing rib, and the first reinforcing rib and the second reinforcing rib are an integrated structure. Along the width direction of the top crown body, the second reinforcing rib is arranged opposite to the second guide rail plate.

[0016] The present invention enhances the support strength of the guide rail plate 2 in the middle portion by arranging the reinforcing rib 2, thereby greatly delaying deformation at this location.

[0017] Furthermore, it also includes a hardening plate and a pressure plate, wherein the hardening plate is arranged on the bottom surface of the top crown body, the hardening plate is an integral structure, and a plurality of pressure plates are arranged on the bottom surface of the hardening plate along its length direction, the pressure plate is used to install the top rod, and the pressure plate and the hardening plate share a plurality of bolts to be connected to the top crown body.

[0018] The present invention arranges the hardened plate into an integral structure and connects it with the pressure plate by common bolts, thereby reducing hole and groove processing on the bottom surface of the crown body, ensuring its structural integrity, enhancing the strength of the crown body, reducing deformation, and greatly reducing the amount of bolts, making disassembly and assembly easier.

[0019] Furthermore, one limiting grid is disposed in the middle of each of the guide portion 1 and the guide portion 2, and two rows of limiting grids are disposed in the middle portion, with three limiting grids disposed in each row.

[0020] Furthermore, the grid of the middle portion includes main ribs, which are arranged along the length direction of the top crown body, and the limiting grids of the guide part 1 and the guide part 2 are located at both ends of the main ribs.

[0021] It can be seen from the above technical solutions that the present invention has the following advantages:

[0022] The present invention provides a top crown of a press machine. By reducing the number of limit grids at both ends of a top crown body and concentrating the limit grids in the middle of both ends of the top crown body, compared with the prior art, the length of the middle grille is effectively shortened, thereby shortening the force arm of the middle main rib of the grille, and effectively reducing the torque borne by the middle grille. Under the same working conditions and use time, the occurrence of tearing failure of the corresponding main ribs of the grille is greatly delayed, the service life of the top crown body is extended, the number of shutdowns is reduced, and the production efficiency is improved. By concentrating the limit grids at the end in the middle, sufficient space can be reserved for setting reinforcing ribs, thereby enhancing the support for the position of the guide plate installed at the end. Strength, delaying the occurrence of deformation at this position, and further extending the service life of the crown body; by setting the reinforcement plate, the strength of the limit grid adjacent to the reinforcement rib one can be enhanced, and the supporting strength of the guide plate for installing the crown body can be further enhanced, delaying the occurrence of deformation; by setting the reinforcement rib two, the supporting strength of the guide plate two in the middle part is enhanced, which greatly delays the occurrence of deformation here; by setting the hardened plate as an integral structure and installing it with the pressure plate using bolts, the hole and groove processing on the bottom surface of the crown body is reduced, thereby ensuring its structural integrity, enhancing the strength of the crown body, reducing deformation, and at the same time greatly reducing the amount of bolts, making it easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0025] Figure 2 This is a stress cloud diagram for simulation analysis of existing technologies.

[0026] Figure 3 It is a stress cloud diagram of the simulation analysis of the specific implementation mode of the present invention.

[0027] Figure 4 It is a partial schematic diagram of the assembly structure of the crown body, the hardening plate and the pressing plate in a specific embodiment of the present invention.

[0028] In the figure, 1, guide part 1; 2, middle part; 3, guide part 2; 4, limit grid; 5, main rib; 6, guide plate 2; 7, guide plate 1; 8, reinforcing rib 1; 9, reinforcing rib 2; 10, reinforcing plate; 11, hardened plate; 12, pressure plate; 13, bolts. DETAILED DESCRIPTION

[0029] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0030] like Figure 1 As shown, this specific embodiment provides a press crown, including a crown body, which includes a guide portion 1, a middle portion 2 and a guide portion 2 3 in sequence, the guide portion 1 and the guide portion 2 3 are slidably connected to the corresponding inner walls of the press slider, the guide portion 1, the middle portion 2 and the guide portion 2 3 are all separated by a plurality of limit grids 4 through a grid, the sizes of all the limit grids 4 are the same, the middle portion 2 is provided with m rows of limit grids 4, m ≥ 2, the number of limit grids 4 in each row is the same and are arranged along the length direction of the crown, the middle portions of the guide portion 1 and the guide portion 2 3 are both provided with n limit grids 4, n < m, and the n limit grids 4 are arranged along the width direction of the crown, and the limit grids 4 of the guide portion 1 and the limit grids 4 of the guide portion 2 3 are symmetrically arranged.

[0031] In order to improve the strength of the top crown (mainly refers to the strength of the main rib 5 in the middle of the grid) and delay failure, the conventional solution to enhance the strength is to set reinforcing ribs of a certain height at the connection or to enhance the thickness of the main rib 5. In this specific embodiment, the inventor provides a technical idea that is different from the conventional way to enhance strength. The technical concept of optimizing the layout of the limit grid 4 is creatively adopted. By reducing the number of limit grids 4 at both ends of the top crown body and concentrating the limit grids 4 in the middle of both ends of the top crown body, compared with the prior art, the length of the middle part 2 of the grid is effectively shortened, thereby shortening the force arm of the main rib 5 in the middle of the grid, and effectively reducing the torque borne by the main rib 5. Under the same working conditions and usage time, the occurrence of tearing failure of the corresponding main rib 5 of the grid is greatly delayed, the service life of the top crown body is extended, the number of shutdowns is reduced, and the production efficiency is improved.

[0032] like Figure 1As shown, in the prior art, both ends of the crown body are slidably connected with the inner wall of the slider, that is, two guide rail plates 1 7 are respectively arranged on the outer side surfaces of the guide part 1 and the guide part 2 3, and two guide rail plates 2 6 are respectively arranged on the outer side surfaces of the middle part 2. The guide rail plates 2 6 can move along the corresponding guide rails on the inner wall of the slider, and the limiting grid 4 of the middle part 2 is located between the two guide rail plates 2 6 on the corresponding sides. The guide plate 1 7 and the guide plate 2 6 can move along the corresponding guide rails on the inner wall of the slider. In order to ensure that the slider stably supports the crown body, the spacing between the guide rails on the inner wall of the slider is relatively large. Therefore, in this specific embodiment, all the limiting grids 4 of the guide part 1 and the guide part 2 3 are located between the corresponding two guide rail plates 1 7. Since the crown body reciprocates under the action of the airbag and there is an unbalanced load phenomenon, the guide part 1 1 and the guide part 23 are subjected to uneven force, which causes deformation and cracking at the position where the guide plate 7 is installed on the top crown body. In order to enhance the supporting strength of the position where the guide plate 7 is installed and delay the occurrence of deformation, reinforcing ribs 8 are symmetrically arranged at both ends of the guide part 1 and the guide part 23. Along the length direction of the top crown body, the reinforcing ribs 8 are arranged opposite to the corresponding guide plate 7. In the present specific embodiment, the reinforcing rib 8 is a right-angled trapezoidal structure, and its narrow end is close to the guide plate 7; in order to enhance the supporting strength of the guide plate 26, the wide end of the reinforcing rib 8 is provided with a reinforcing rib 29. The reinforcing rib 8 and the reinforcing rib 29 are an integrated structure, and a transition arc surface is provided at the connection to avoid stress concentration. Along the width direction of the top crown body, the reinforcing rib 29 is arranged opposite to the guide plate 26.

[0033] like Figure 1 As shown, after the reinforcing rib 1 8 is provided, the limiting grid 4 adjacent to the reinforcing rib 1 8 bears the load. In order to enhance the strength of the grid corresponding to this part of the limiting grid 4, in the present specific embodiment, two reinforcing plates 10 are symmetrically provided in the limiting grid 4 adjacent to the corresponding reinforcing rib 1 8 of the guide portion 1 and the guide portion 2 3. The two reinforcing plates 10 are arranged along the width direction of the top crown body. In order to further enhance the supporting strength, the reinforcing plate 10 is in a C-shaped structure and its end is in a trapezoidal structure, or the reinforcing plate 10 is in a triangular structure and is close to the guide plate 1 7. In the present specific embodiment, the reinforcing plate 10 adopts the latter structure.

[0034] like Figure 4 As shown, in the prior art, a plurality of mounting grooves are provided at the bottom of the crown, each mounting groove is also provided with a mounting hole connected to a corresponding hardened plate 11, a pressing plate 12 is also provided between two adjacent hardened plates 11, and the pressing plate 12 is connected to the bottom of the crown by corresponding bolts. It can be seen that a plurality of mounting grooves and mounting holes are provided at the bottom of the crown, which is extremely disadvantageous to its strength. Figure 1As shown, in order to avoid the influence of the holes and grooves on the strength of the top crown body, in the present specific embodiment, a hardening plate 11 is arranged on the bottom surface of the top crown body, and the hardening plate 11 is an integral structure. A plurality of pressing plates 12 are arranged on the bottom surface of the hardening plate 11 along its length direction, and the pressing plate 12 is used to install the top rod. The pressing plate 12 and the hardening plate 11 share a plurality of bolts 13 to be connected to the top crown body. By setting the hardening plate 11 as an integral structure and sharing the bolts with the pressing plate 12 for installation and connection, the amount of bolts 13 is greatly reduced, which facilitates disassembly and assembly.

[0035] like Figure 1 As shown, the number of the limiting grids 4 is the same as the number of the airbags. In the present specific embodiment, a limiting grid 4 is provided in the middle of the guide part 1 and the guide part 2 3, and two rows of limiting grids 4 are provided in the middle part 2, and three limiting grids 4 are provided in each row. The three limiting grids 4 are arranged along the length direction of the top crown body. The grid of the middle part 2 includes main ribs 5, and the main ribs 5 are arranged along the length direction of the top crown body. The limiting grids 4 of the guide part 1 and the guide part 2 3 are located at both ends of the main ribs 5.

[0036] In this specific implementation manner, the top crown body is connected to the grille, the reinforcing rib 1 8 , the reinforcing rib 2 9 and the reinforcing plate 10 by welding.

[0037] like Figure 2 and Figure 3 As shown, after simulation analysis, it can be seen that:

[0038]

[0039] The stress on the main reinforcement in the middle part of this specific implementation is significantly reduced, and the strength of the crown body is effectively enhanced.

[0040] In addition, the parameters before and after optimization are calculated and compared:

[0041]

[0042] It can be seen that the wind pressure fluctuation and tonnage fluctuation of this specific implementation are lower, and the operation is more stable, which is an unexpected technical effect when performing structural optimization.

[0043] From the above specific implementations, it can be seen that the present invention has the following beneficial effects:

[0044] 1. By reducing the number of limit grids 4 at both ends of the top crown body and concentrating the limit grids 4 in the middle of both ends of the top crown body, compared with the existing technology, the length of the middle part 2 grid is effectively shortened, thereby shortening the force arm of the middle main rib 5 of the grid, which can effectively reduce the torque borne by the middle part 2 grid. Under the same working conditions and use time, the occurrence of tearing failure of the corresponding main rib 5 of the grid is greatly delayed, the service life of the top crown body is extended, the number of shutdowns is reduced, and the production efficiency is improved;

[0045] 2. By concentrating the limit grids 4 at the end in the middle, sufficient space can be reserved for setting the reinforcing ribs 8, thereby enhancing the support strength of the guide rail plate 7 at the end, delaying the deformation of this position, and further extending the service life of the crown body;

[0046] 3. By providing the reinforcing plate 10, the strength of the limiting grid 4 adjacent to the reinforcing rib 8 can be enhanced, and the supporting strength of the guide plate for installing the crown body can be further enhanced, thereby delaying the occurrence of deformation;

[0047] 4. The support strength of the guide rail plate 2 6 of the middle part 2 is enhanced by providing the reinforcing rib 2 9, which greatly delays the deformation of this part;

[0048] 5. By setting the hardened plate 11 as an integral structure and connecting it with the pressing plate 12 by bolts, the hole and groove processing on the bottom surface of the crown body is reduced, the structural integrity is ensured, the strength of the crown body is enhanced, the deformation is reduced, and the amount of bolts is greatly reduced, which is convenient for disassembly and assembly;

[0049] 6. Wind pressure fluctuation and tonnage fluctuation are lower, and the operation is more stable.

[0050] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A press crown, comprising a crown body, characterized in that: The top crown body comprises a guide portion 1 (1), a middle portion (2) and a guide portion 2 (3) in sequence. The grid of the middle portion (2) comprises a main rib (5). The main rib (5) is arranged along the length direction of the top crown body. The limiting grids (4) of the guide portion 1 (1) and the guide portion 2 (3) are located at both ends of the main rib (5). The guide part 1 (1) and the guide part 2 (3) are slidably connected to the corresponding inner wall of the slide block of the press machine. The guide part 1 (1), the middle part (2) and the guide part 2 (3) are all separated by a grid to form a plurality of limit grids (4). The sizes of all the limit grids (4) are the same. The middle part (2) is provided with m rows of limit grids (4), m≥2, the number of limit grids (4) in each row is the same and they are arranged along the length direction of the top crown. The middle parts of the guide part 1 (1) and the guide part 2 (3) are both provided with n limit grids (4), n<m, and the n limit grids (4) are arranged along the width direction of the top crown. The limit grids (4) of the guide part 1 (1) and the limit grids (4) of the guide part 2 (3) are symmetrically arranged. Two guide rail plates (7) are respectively arranged on the outer side surfaces of the guide part (1) and the guide part (3), and the guide rail plates (7) can move along the corresponding guide rails on the inner wall of the slider, and the limit grids (4) of the guide part (1) and the guide part (3) are located between the two corresponding guide rail plates (7), and reinforcing ribs (8) are symmetrically arranged at both ends of the guide part (1) and the guide part (3), and the reinforcing ribs (8) are arranged opposite to the corresponding guide rail plates (7) along the length direction of the crown body; Two reinforcing plates (10) are symmetrically arranged in the limiting grid (4) adjacent to the corresponding reinforcing rib 1 (8) of the guide portion 1 (1) and the guide portion 2 (3), and the two reinforcing plates (10) are arranged along the width direction of the crown body.

2. The press crown according to claim 1, characterized in that: The reinforcing rib 1 (8) is a right-angled trapezoidal structure.

3. The press crown according to claim 2, characterized in that: The reinforcing plate (10) has a C-shaped structure and its end has a trapezoidal structure, or the reinforcing plate (10) has a triangular structure and is close to the first guide rail plate (7).

4. The press crown according to claim 3, characterized in that: Two guide rail plates (6) are respectively arranged at both ends of the outer side surface of the middle part (2), and the two guide rail plates (6) can move along the corresponding guide rails on the inner wall of the slider, and the limit grid (4) of the middle part (2) is located between the two guide rail plates (6) on the corresponding side.

5. The press crown according to claim 4, characterized in that: A second reinforcing rib (9) is arranged at the wide end of the first reinforcing rib (8). The first reinforcing rib (8) and the second reinforcing rib (9) are an integrated structure. Along the width direction of the crown body, the second reinforcing rib (9) is arranged opposite to the second guide plate (6).

6. The press crown according to claim 5, characterized in that It also includes a hardening plate (11) and a pressing plate (12). The hardening plate (11) is arranged on the bottom surface of the crown body. The hardening plate (11) is an integral structure. The bottom surface of the hardening plate (11) is provided with a plurality of pressing plates (12) along its length direction. The pressing plates (12) are used to install the top rod. The pressing plates (12) and the hardening plate (11) are connected to the crown body by using a plurality of bolts (13).

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