Press transmission structure with pressure maintaining function

Abstract

The utility model relates to the technical field of punch forming of materials, and discloses a press transmission structure with a pressure maintaining function, which comprises a first connecting rod, and the first end of the first connecting rod is used for being eccentrically connected with the output end of a driving assembly; the middle of the swing rod is used for being hinged or rotationally connected to a machine base of the press machine, and the first end of the swing rod is hinged or rotationally connected with the second end of the first connecting rod. The first end of the second connecting rod is hinged to or rotationally connected with the second end of the swing rod; the first end of the guide column is hinged to or rotationally connected with the second end of the second connecting rod, so that the guide column can generate linear reciprocating displacement under the transmission operation of the second connecting rod. The transmission structure has the advantages that a driving source is not prone to overload, the service life is long, and the pressure maintaining function is achieved.

Description

Technical Field

[0001] This utility model relates to the field of stamping and forming technology of materials, and in particular to a press transmission structure with pressure holding function. Background Technology

[0002] Presses are widely used in processes such as cutting, punching, blanking, bending, riveting, and forming. They process metal parts by applying strong pressure to metal blanks, causing plastic deformation and fracture. They are indispensable machine tools in industries such as automotive, tractor, light industry, electrical appliances, and defense. A press typically consists of a machine body, transmission structure, slide block, connector, and hydraulic protection system. The transmission structure transmits power to the slide block, causing it to perform linear reciprocating motion, thus operating on the workpiece.

[0003] Existing transmission structures typically employ a simple eccentric shaft structure. In this structure, the connection between the drive motor and the eccentric shaft bears a large torque, making the drive motor prone to overload. Furthermore, existing transmission structures lack a pressure-holding function, resulting in poor forging quality. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a press transmission structure with a pressure-holding function.

[0005] According to the present invention, a press transmission structure with pressure-holding function includes a first connecting rod, the first end of which is eccentrically connected to the output end of a drive assembly, so that the first end of the first connecting rod can swing under the drive of the drive assembly; it also includes a swing arm, the middle part of which is hinged or rotatably connected to the press base, and its first end is hinged or rotatably connected to the second end of the first connecting rod, so that the swing arm can reciprocate along the middle part of the swing arm under the transmission operation of the first connecting rod; it also includes a second connecting rod, the first end of which is hinged or rotatably connected to the second end of the swing arm; it also includes a guide post and a guide sleeve, the first end of which is hinged or rotatably connected to the second end of the second connecting rod, the guide sleeve being connected to the press base, and the guide post being slidably connected to the guide sleeve, so that the guide post can move linearly back and forth under the transmission operation of the second connecting rod;

[0006] The purpose of this configuration is to transmit the power output from the drive source through the first connecting rod, the rocker arm, and the second connecting rod in sequence, and then act on the slider, which in turn acts on the workpiece. Compared with the traditional transmission structure, the torque borne at the connection between the drive source and the eccentric shaft is dispersed in this scheme. The torque and force are mainly distributed at the connection between the rocker arm and the machine base, thus the drive source is less prone to overload and has a longer service life.

[0007] In addition, the transmission operation between the various links of this transmission structure makes the movement of the slider before and after the bottom dead center relatively smooth, and achieves a pressure holding operation of 0.1 seconds at the bottom dead center. Thus, this transmission structure also has a pressure holding function, which improves the forging quality.

[0008] In some examples of this utility model, a first connecting ring is formed at the first end of the first connecting rod, the output end of the drive component passes through the first connecting ring, so that the central axis of the output end is eccentrically placed inside the first connecting ring, and the output end and the first connecting ring are rotatably connected by a first bearing.

[0009] The purpose of this configuration is to achieve an eccentric connection between the first connecting ring and the output end of the drive component, so that when the drive component rotates, it can drive the first connecting rod to swing. The first bearing is also used to achieve a rotational connection between the first connecting ring and the output end of the drive component.

[0010] In some examples of this utility model, a second connecting ring is formed at the second end of the first connecting rod, a first ear with a first through hole is formed at the first end of the swing rod, a first pin passes through the second connecting ring and the first through hole, the first pin and the second connecting ring are connected by a second bearing, and the first pin and the first ear are fixedly connected.

[0011] The purpose of this design is to achieve a rotatable connection between the first connecting rod and the rocker arm by using the second connecting ring, the first lug, and the first pin that passes through both. The second bearing is used to assist in this rotational operation and reduce friction.

[0012] In some examples of this utility model, a column hole is formed in the middle of the rocker arm, and a connecting shaft passes through the column hole. The two ends of the connecting shaft are used to be fixedly connected to the base of the press. The connecting shaft and the column hole are rotatably connected by a third bearing.

[0013] The purpose of this setup is to achieve a rotating connection between the rocker arm and the press through the connecting shaft, thereby driving the rocker arm to perform oscillating operations. Furthermore, the connecting bearing is subjected to a certain torque and radial force, thereby dispersing the torque borne by the output end of the drive assembly. The third bearing bush is used to reduce friction.

[0014] In some examples of this utility model, the second end of the swing arm forms a second ear with a second through hole, the first end of the second connecting rod forms a third connecting ring, the third connecting ring and the second through hole are connected by a second pin, the second pin and the third connecting ring are connected by a fourth bearing, and the second pin and the second ear are fixedly connected.

[0015] The purpose of this design is to achieve a rotatable connection between the rocker arm and the second connecting rod by using the second ear, the third connecting ring and the second pin, so that the rocker arm can drive the second connecting rod to work.

[0016] In some examples of this utility model, the second connecting rod has a third through hole near its second end, the first end of the guide post extends into a third ear with a fourth through hole near the end of the second connecting rod, a third pin passes through the third through hole and the fourth through hole, the third pin is connected to the third through hole by a fifth bearing, and the third pin is fixedly connected to the third ear.

[0017] The purpose of this design is to utilize the third ear, the third through hole, and the third pin to achieve the rotation of the second link and the guide post, thereby transmitting the swinging operation to the guide post through the second link.

[0018] In some examples of this utility model, an arc-shaped protrusion is formed at the second end of the second connecting rod, and an arc-shaped groove is formed at the first end of the guide post. The arc-shaped protrusion and the arc-shaped groove are connected by an arc-shaped bearing.

[0019] The purpose of this design is to allow the second link to swing relative to the guide post while also generating an angular displacement. The combination of the arc-shaped groove and the arc-shaped protrusion can prevent this angular displacement from interfering with the vertical displacement of the guide post. In addition, it can achieve a tight connection between the second link and the guide post, while the arc-shaped bearing is used to reduce friction.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a top view of the press transmission structure with pressure-holding function in an embodiment of this utility model;

[0023] Figure 2 Appendix to the embodiments of this utility model Figure 1 Sectional view at AA;

[0024] Figure 3 This is a front view of the swing arm in an embodiment of this utility model;

[0025] Figure 4 This is a side view of the swing arm in an embodiment of the present invention;

[0026] Figure 5 This is a front view of the guide post in an embodiment of this utility model;

[0027] Figure 6 This is a side view of the guide post in an embodiment of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] The output terminal a of the driver component;

[0030] First connecting rod 1, first connecting ring 1-1, second connecting ring 1-2;

[0031] Rocker arm 2, first ear 2-1, first through hole 2-2, post hole 2-3, second ear 2-4, second through hole 2-5;

[0032] Second connecting rod 3, third connecting ring 3-1, third through hole 3-2, arc surface protrusion 3-3;

[0033] Guide post 4, third ear 4-1, fourth through hole 4-2;

[0034] Guide sleeve 5, arc-shaped groove 5-1;

[0035] First bearing 6;

[0036] First pin 7;

[0037] Second bearing 8;

[0038] First pressure plate 9;

[0039] First screw 10;

[0040] Connecting shaft 11;

[0041] Third bearing 12;

[0042] Second pin 13;

[0043] Fourth bearing 14;

[0044] Second pressure plate 15;

[0045] Second screw 16;

[0046] Third pin 17;

[0047] Fifth bearing 18;

[0048] Third pressure plate 19;

[0049] Third screw 20;

[0050] 21 curved bearing bush;

[0051] Sixth bearing 22. Detailed Implementation

[0052] 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.

[0053] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0056] The following is for reference. Figures 1-6 The illustration shows a press transmission structure with pressure-holding function according to an embodiment of the present invention.

[0057] Please see the appendix Figure 1 ~Attached Figure 2 , attached Figure 1 This is a top view of the transmission structure of a press with a pressure-holding function, attached. Figure 2 For the appendix Figure 1 A cross-sectional view at AA; This transmission structure includes a first link 1, the first end of which is eccentrically connected to the output end a of the drive assembly. The drive assembly includes a servo motor, etc., to provide rotational power. This connection method allows the first end of the first link 1 to swing under the drive of the drive assembly.

[0058] This transmission structure also includes a swing arm 2, the middle part of which is rotatably connected to the base of the press (not shown in the figure), and its first end is rotatably connected to the second end of the first connecting rod 1, so that the swing arm 2 can reciprocate along the middle part of the swing arm 2 under the transmission operation of the first connecting rod 1.

[0059] This transmission structure also includes a second connecting rod 3, the first end of the second connecting rod 3 being rotatably connected to the second end of the swing rod 2;

[0060] This transmission structure also includes a guide post 4 and a guide sleeve 5. The first end of the guide post 4 is rotatably connected to the second end of the second connecting rod 3. The guide sleeve 5 is used to connect to the base of the press. The guide post 4 is slidably connected to the guide sleeve 5, so that the guide post 4 can produce linear reciprocating motion under the transmission operation of the second connecting rod 3.

[0061] For details, please continue to refer to the appendix. Figure 2 A first connecting ring 1-1 is formed at the first end of the first connecting rod 1. The output end a of the drive assembly passes through the first connecting ring 1-1, so that the central axis of the output end a is eccentrically placed inside the first connecting ring 1-1, and the output end a and the first connecting ring 1-1 are rotatably connected by the first bearing 6.

[0062] Please continue reading the appendix. Figure 2 ~Attached Figure 4 , attached Figure 3 This is a front view of the pendulum 2, attached. Figure 4 The side view of the swing arm 2 shows that a second connecting ring 1-2 is formed at the second end of the first connecting rod 1, and a first ear 2-1 with a first through hole 2-2 is formed at the first end of the swing arm 2. There are two first ears 2-1, which are integrally formed with the swing arm 2. The second connecting ring 1-2 is placed between the two first ears 2-1. A first pin 7 passes through the second connecting ring 1-2 and the first through hole 2-2. The first pin 7 and the second connecting ring 1-2 are connected by a second bearing 8. The first pin 7 and the first ear 2-1 are fixedly connected.

[0063] Specifically, a through hole (not shown in the figure) is also provided on the second connecting ring 1-2, through which lubricating oil can be dispersed to the space between the second bearing 8 and the second connecting ring 1-2 to reduce friction;

[0064] In addition, the two ends of the first pin 7 are connected to the two first ears 2-1 respectively by the first pressure plate 9 and the first screw 10. That is, the first pressure plate 9 extends to the end of the first pin 7 and the side of the first ear 2-1 of the covering part, and the first screw 10 is fixed between the first pin 7 and the first pressure plate 9 and between the first ear 2-1 and the first pressure plate 9 respectively.

[0065] Please continue reading the appendix. Figure 3 A column hole 2-3 is formed in the middle of the rocker arm 2. A connecting shaft 11 passes through the column hole 2-3. The two ends of the connecting shaft 11 are used to fix and connect to the base of the press. The connecting shaft 11 and the column hole 2-3 are rotatably connected by a third bearing 12. A through hole (not shown in the figure) is also provided in the middle of the rocker arm 2. Lubricating oil can be dispersed through the through hole to the space between the column hole 2-3 and the connecting shaft 11 to reduce friction.

[0066] Please continue reading the appendix. Figure 2 ~Attached Figure 3 The second end of the swing rod 2 forms a second ear 2-4 with a second through hole 2-5. There are two second ears 2-4, which are integrally formed on the swing rod 2. The first end of the second connecting rod 3 forms a third connecting ring 3-1. The third connecting ring 3-1 is placed between the two second ears 2-4. The third connecting ring 3-1 and the second through hole 2-5 are connected by a second pin 13. The second pin 13 and the third connecting ring 3-1 are connected by a fourth bearing 14. The second pin 13 and the second ear 2-4 are fixedly connected.

[0067] Specifically, a through hole (not shown in the figure) is also provided on the third connecting ring 3-1, through which lubricating oil can be dispersed to the space between the fourth bearing 14 and the third connecting ring 3-1 to reduce friction.

[0068] Please continue reading the appendix. Figure 4 The two ends of the second pin 13 are respectively connected to the two second ears 2-4 through the second pressure plate 15 and the second screw 16. That is, the second pressure plate 15 extends to the end of the second pin 13 and the side of the second ear 2-4 of the covered part, and the second screw 16 is fixed between the second pin 13 and the second pressure plate 15 and between the second ear 2-4 and the second pressure plate 15.

[0069] Please continue reading the appendix. Figure 2 Appendix Figure 5 , attached Figure 5The guide post 4 is shown in the front view. The second connecting rod 3 has a third through hole 3-2 near its second end. The first end of the guide post 4 extends into a third ear 4-1 with a fourth through hole 4-2 near the end of the second connecting rod 3. There are two third ears 4-1, located on both sides of the end of the second connecting rod 3. They are separate from the guide post 4. A third pin 17 passes through the third through hole 3-2 and the fourth through hole 4-2. The third pin 17 is connected to the third through hole 3-2 by a fifth bearing 18. The third pin 17 is fixedly connected to the third ear 4-1.

[0070] Please see the appendix Figure 6 , attached Figure 6 The guide post 4 is shown in the side view. The two ends of the third pin 17 are connected to the two third ears 4-1 respectively by the third pressure plate 19 and the third screw 20. That is, the third pressure plate 19 extends to the end of the third pin 17 and the side of the third ear 4-1 of the covering part. The second screw 16 is fixed between the second pin 13 and the second pressure plate 15 and between the second ear 2-4 and the second pressure plate 15 respectively.

[0071] Please continue reading the appendix. Figure 2 The second connecting rod 3 has an arc-shaped protrusion 3-3 at its second end, and the first end of the guide post 4 has an arc-shaped groove 5-1. The arc-shaped protrusion 3-3 and the arc-shaped groove 5-1 are connected by an arc-shaped bearing 21. The guide post 4 also has a through hole (not shown in the figure), through which lubricating oil can be dispersed to the end of the arc-shaped bearing 21 and the second connecting rod 3 to reduce friction.

[0072] Please continue reading the appendix. Figure 2 A sixth bearing 22 is also provided between the guide post 4 and the guide sleeve 5.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A press transmission structure with pressure holding function, characterized in that, The system includes a first connecting rod, the first end of which is eccentrically connected to the output end of a drive assembly, allowing the first end of the first connecting rod to oscillate under the drive of the drive assembly; a swing arm, the middle of which is hinged or rotatably connected to the base of the press, the first end of which is hinged or rotatably connected to the second end of the first connecting rod, allowing the swing arm to reciprocate along its middle section under the transmission of the first connecting rod; a second connecting rod, the first end of which is hinged or rotatably connected to the second end of the swing arm; and a guide post and a guide sleeve, the first end of which is hinged or rotatably connected to the second end of the second connecting rod, the guide sleeve being connected to the base of the press, and the guide post being slidably connected to the guide sleeve, allowing the guide post to move linearly back and forth under the transmission of the second connecting rod.

2. The press transmission structure with pressure-holding function according to claim 1, characterized in that, A first connecting ring is formed at the first end of the first connecting rod, and the output end of the drive component passes through the first connecting ring, so that the central axis of the output end is eccentrically placed inside the first connecting ring, and the output end and the first connecting ring are rotatably connected by a first bearing.

3. The press transmission structure with pressure-holding function according to claim 1, characterized in that, A second connecting ring is formed at the second end of the first connecting rod, and a first ear with a first through hole is formed at the first end of the swing rod. A first pin passes through the second connecting ring and the first through hole. The first pin and the second connecting ring are connected by a second bearing. The first pin and the first ear are fixedly connected.

4. A press transmission structure with pressure-holding function according to claim 1, characterized in that, A column hole is formed in the middle of the swing arm, and a connecting shaft passes through the column hole. The two ends of the connecting shaft are used to fix and connect to the base of the press. The connecting shaft and the column hole are rotatably connected by a third bearing.

5. A press transmission structure with pressure-holding function according to claim 1, characterized in that, The second end of the swing arm forms a second ear with a second through hole, and the first end of the second connecting rod forms a third connecting ring. A second pin passes through the third connecting ring and the second through hole. The second pin and the third connecting ring are connected by a fourth bearing. The second pin and the second ear are fixedly connected.

6. A press transmission structure with pressure-holding function according to any one of claims 1 to 5, characterized in that, The second connecting rod has a third through hole near its second end. The first end of the guide post extends into a third ear with a fourth through hole near the end of the second connecting rod. A third pin passes through the third through hole and the fourth through hole. The third pin is connected to the third through hole by a fifth bearing. The third pin is fixedly connected to the third ear.

7. A press transmission structure with pressure-holding function according to claim 6, characterized in that, An arc-shaped protrusion is formed at the second end of the second connecting rod, and an arc-shaped groove is formed at the first end of the guide post. The arc-shaped protrusion and the arc-shaped groove are connected by an arc-shaped bearing.

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