Punching structure and punching machine

Abstract

This invention provides a stamping structure and a stamping machine. The stamping structure includes a cam, a moving plate, and a stamping rod. The moving plate has a mounting end face with a limiting groove formed thereon. The cam is rotatably mounted in the limiting groove, and the rotation of the cam drives the moving plate to move linearly. A stamping rod is provided at the end of the moving plate away from the limiting groove, and the moving plate drives the stamping rod to move closer to or away from the stamped part. In this invention, the cam converts its own rotational motion into linear motion of the moving plate. The rotation of the cam pushes the moving plate, enabling precise control of the stamping process to ensure the forming quality of the stamped part.

Description

Technical Field

[0001] This utility model belongs to the field of stamping machine technology, specifically relating to a stamping structure and a stamping machine. Background Technology

[0002] Stamping mechanisms are widely used in modern manufacturing for sheet metal forming. Their core function is to apply pressure to cause plastic deformation of the sheet metal, thereby producing parts of various shapes and sizes. Traditional stamping mechanisms are usually hydraulically driven, but their performance is limited in scenarios requiring complex motion control and high precision. The response speed and control accuracy of the stamping system are limited, and leakage and pressure fluctuations in the hydraulic system also affect accuracy. In hydraulic systems, hydraulic oil leakage is unavoidable, especially when seals are aged or worn. Leakage leads to pressure fluctuations, affecting the motion accuracy of the stamping rod. Pressure fluctuations can also cause unstable stamping pressure, which in turn affects the dimensional accuracy and surface quality of the stamped parts. Utility Model Content

[0003] This utility model provides a stamping structure and a stamping machine, which can solve the technical problem that traditional stamping mechanisms are usually hydraulically driven, but their performance is limited in scenarios with complex motion control and high precision requirements.

[0004] This utility model provides a stamping structure, which includes a cam, a movable plate and a stamping rod;

[0005] The movable plate has a mounting end face, and a limiting groove is formed on the mounting end face. The cam is rotatably mounted in the limiting groove, and the rotation of the cam drives the movable plate to move linearly.

[0006] The moving plate is provided with the stamping rod at one end away from the limiting groove, and the moving plate drives the stamping rod to move closer to or away from the stamping part.

[0007] In some embodiments, a first bearing and a second bearing are provided on the mounting end face, the first bearing and the second bearing are disposed opposite to each other, the limiting groove is formed between the first bearing and the second bearing, and the outer peripheral wall of the cam contacts the outer peripheral walls of the first bearing and the second bearing respectively.

[0008] In some embodiments, the outer contour of the cam includes a plurality of protrusions distributed circumferentially, each protrusion including a first working surface and a second working surface. The first bearing rolls in contact with the first working surface and the second working surface, and the second bearing rolls in contact with the first working surface and the second working surface. When the first bearing contacts one working surface, the second bearing contacts the other working surface.

[0009] In some embodiments, the first working surface is a concave surface, and the second working surface is a convex surface. When the first bearing rotates and contacts the first working surface of one of the protrusions, the second bearing rotates in the opposite direction relative to the first bearing and abuts against the second working surface of the other protrusion, and the moving plate drives the stamping rod closer to the stamping part. When the first bearing rotates and contacts the second working surface of one of the protrusions, the second bearing rotates in the opposite direction relative to the first bearing and abuts against the first working surface of the other protrusion, and the moving plate drives the stamping rod away from the stamping part.

[0010] In some embodiments, the movable plate includes a first plate and a second plate, the first plate being vertically arranged and having the mounting end face, one end face of the second plate being connected to the first plate, and the other end face of the second plate being provided with the stamping rod.

[0011] In some embodiments, a guide plate is also included, which is fixedly disposed and has a slide rail channel. The movable plate is installed in the slide rail channel and moves linearly along the slide rail channel.

[0012] In some embodiments, a bracket is also included, the guide plate is mounted on the bracket, one end face of the guide plate is connected to the bracket, and a first guide arm and a second guide arm are provided on the other end face of the guide plate. The first guide arm and the second guide arm are arranged opposite to each other, and the slide rail channel is formed between the first guide arm and the second guide arm. The inner walls of the first guide arm and the second guide arm respectively contact the side wall of the guide plate.

[0013] In some embodiments, a rotating shaft is also included, which is arranged horizontally, the movable plate is arranged vertically, the bracket is provided with a rotating groove, one end of the rotating shaft is installed in the rotating groove, and the other end of the rotating shaft is installed with the cam, the rotation of the rotating shaft drives the cam to rotate.

[0014] In some embodiments, a drive unit is also included, which includes a motor, a worm gear, and a turbine. The motor is mounted on the bracket, the turbine is sleeved on the rotating shaft, one end of the worm gear is connected to the output shaft of the motor, and the other end of the worm gear meshes with the tooth groove of the turbine.

[0015] A stamping press includes a stamping structure, wherein the stamping structure is as described above.

[0016] The stamping structure and stamping machine provided by this utility model have the following beneficial effects:

[0017] In this invention, the cam converts its rotational motion into the linear motion of the moving plate. When the cam rotates in the limiting groove, its rotation pushes the moving plate, causing it to move linearly in the vertical direction. This allows the stamping rod to move closer to or further away from the stamped part, completing the stamping action. During the stamping process, the magnitude and speed of the pressure applied by the stamping rod to the stamped part can be precisely controlled by adjusting the rotational speed of the cam. According to the pre-set stamping process requirements, the cam can achieve precise control of the stamping process to ensure the forming quality of the stamped part. Because the outer contour of the cam is irregular, when the cam rotates continuously in one direction, the contour at different positions interacts with the limiting groove, enabling the reciprocating linear movement of the moving plate. Thus, without changing the rotation direction of the cam, the complete stamping cycle of the stamping rod moving closer to the stamped part for stamping and moving away from the stamped part back to the initial position can be completed. Furthermore, the cam contour can be designed according to different stamping process requirements to adapt to various complex stamping tasks. By selecting a suitable cam contour, the movement trajectory and pressure changes of the stamping rod can be precisely controlled to meet the production requirements of stamped parts with different shapes, sizes, and precision requirements. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the stamping structure according to an embodiment of the present utility model;

[0020] Figure 2 This is an isometric view of the cam, the first bearing, and the second bearing according to an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the cam, the first bearing, and the second bearing according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the driving component according to an embodiment of the present utility model.

[0023] Attached Figures: 1-Cam; 101-Protrusion; 111-First Working Surface; 112-Second Working Surface; 2-Moving Plate; 21-Mounting End Face; 201-Limiting Groove; 202-First Plate; 203-Second Plate; 3-Punching Rod; 41-First Bearing; 42-Second Bearing; 5-Guide Plate; 51-First Guide Arm; 52-Second Guide Arm; 6-Bracket; 7-Rotating Shaft; 8-Drive Component; 801-Motor; 802-Worm Gear; 803-Turbine. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0026] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used here to describe the spatial positional relationship of a device or feature as shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figure. For example, if a device in the figure is inverted, a device described as "above" or "on top of" other devices or structures will subsequently be positioned as "below" or "under" other devices or structures.

[0027] See also Figures 1 to 4 As shown, according to an embodiment of the present invention, a stamping structure is provided, which includes a cam 1, a movable plate 2, and a stamping rod 3; the movable plate 2 has a mounting end face 21, on which a limiting groove 201 is formed, the cam 1 is rotatably mounted in the limiting groove 201, and the rotation of the cam 1 drives the movable plate 2 to move linearly; a stamping rod 3 is provided at one end of the movable plate 2 away from the limiting groove 201, and the movable plate 2 drives the stamping rod 3 to approach or move away from the stamping part.

[0028] It is worth noting that the outer contour of cam 1 is irregular in shape, while the shape of the limiting groove 201 does not change. During the rotation of cam 1, the outer contour of cam 1 will contact the limiting groove 201, thereby pushing the moving plate 2 to move linearly.

[0029] Specifically, when cam 1 rotates, its outer contour interacts with the limiting groove 201. Since cam 1 is rotatably mounted within the limiting groove 201, its protrusion 101 gradually pushes the moving plate 2 as it rotates. Driven by cam 1, the moving plate 2 moves linearly along a direction perpendicular to the limiting groove 201, towards the location of the stamped part. The stamping rod 3 also moves along with it, gradually approaching the stamped part. Once the stamping rod 3 contacts the stamped part, the moving plate 2 continuously applies pressure as cam 1 continues to rotate, stamping the part under this pressure. At this time, the rotation speed and torque of cam 1 are adjusted according to the pre-set stamping process requirements to ensure the forming quality of the stamped part. After the stamping is completed and the required forming degree is achieved, due to the irregular outer contour of cam 1, the contours at different positions of cam 1 interact with the limiting groove 201, ensuring that the direction of cam 1 does not change. Since cam 1 rotates continuously in one direction, the reciprocating linear movement of the moving plate 2 is achieved. In other embodiments, the cam 1 can be driven to rotate in the opposite direction according to its contour, and the moving plate 2 can also move in the opposite direction in a straight line, driving the stamping rod 3 away from the stamping part and back to the initial position, completing a complete stamping cycle and preparing for the next stamping operation.

[0030] In this embodiment, cam 1 converts its rotational motion into linear motion of the moving plate 2. When cam 1 rotates in the limiting groove 201, its protrusion 101 pushes the moving plate 2, causing the moving plate 2 to move linearly in the vertical direction. This allows the stamping rod 3 to move closer to or further away from the stamped part, completing the stamping action. During the stamping process, the magnitude and speed of the pressure applied by the stamping rod 3 to the stamped part can be precisely controlled by adjusting the rotational speed of cam 1. According to the preset stamping process requirements, cam 1 can achieve precise control of the stamping process to ensure the forming quality of the stamped part. Since the outer contour of cam 1 is irregular, when cam 1 rotates continuously in one direction, the contours at different positions interact with the limiting groove 201, enabling the reciprocating linear movement of the moving plate 2. In this way, without changing the rotational direction of cam 1, the complete stamping cycle of the stamping rod 3 moving closer to the stamped part for stamping and moving away from the stamped part to return to the initial position can be completed. In addition, the profile of cam 1 can be set according to different stamping process requirements to adapt to various complex stamping tasks. By selecting a suitable profile of cam 1, the movement trajectory and pressure change of stamping rod 3 can be precisely controlled to meet the production of stamped parts with different shapes, sizes and precision requirements.

[0031] In this embodiment, the movable plate 2 and the stamping rod 3 are closely connected. When the movable plate 2 moves linearly under the push of the cam 1, it will drive the stamping rod 3 to move together. The stamping rod 3 is installed at the end of the movable plate 2 away from the limiting groove 201. When the movable plate 2 moves towards the stamping part, the stamping rod 3 gradually approaches the stamping part. When the stamping rod 3 contacts the stamping part, as the movable plate 2 continues to move, the stamping rod 3 applies pressure to the stamping part. After the stamping is completed, the rotation direction of the cam 1 may change or the movable plate 2 may return to its original position by relying on its irregular contour. During the return process, the movable plate 2 moves linearly in the opposite direction, driving the stamping rod 3 away from the stamping part and back to its initial position, preparing for the next stamping operation. This process requires the coordinated cooperation of the movable plate 2 and the stamping rod 3 to ensure that the stamping equipment can work efficiently and continuously. The limiting groove 201 is a key structure set on the moving plate 2. It provides constraint and guidance for the rotation of the cam 1 and its interaction with the moving plate 2. The cam 1 is installed in the limiting groove 201 and can be rotatably installed so that the outer contour of the cam 1 can rotate within the limiting groove 201 when rotating, thereby pushing the moving plate 2 to move linearly. The shape and size of the limiting groove 201 match the outer contour of the cam 1 to ensure that the cam 1 can smoothly push the moving plate 2 and make the linear motion direction of the moving plate 2 accurate and stable.

[0032] See also Figure 1 and Figure 2 As shown, a first bearing 41 and a second bearing 42 are provided on the mounting end face 21. The first bearing 41 and the second bearing 42 are arranged opposite to each other, and a limiting groove 201 is formed between the first bearing 41 and the second bearing 42. The outer peripheral wall of the cam 1 contacts the outer peripheral wall of the first bearing 41 and the second bearing 42 respectively.

[0033] Specifically, cam 1 is installed in the limiting groove 201 formed by the first bearing 41 and the second bearing 42. The outer peripheral wall of cam 1 is in contact with the outer peripheral walls of the first bearing 41 and the second bearing 42. At this time, the moving plate 2 is in the initial position, and the stamping rod 3 is away from the stamping part. Cam 1 rotates, and its rotation causes its outer peripheral wall to interact with the outer peripheral walls of the first bearing 41 and the second bearing 42. As cam 1 rotates, its outer peripheral wall, due to its irregular structure, gradually pushes the first bearing 41 and the second bearing 42 to rotate. Since the first bearing 41 and the second bearing 42 are arranged opposite each other and form the limiting groove 201, cam 1 is constrained within the limiting groove 201 during rotation, and the outer peripheral wall of cam 1 can effectively convert the rotational motion into a thrust on the moving plate 2. Under the push of cam 1, the moving plate 2 begins to move in a straight line. Due to the presence of the first bearing 41 and the second bearing 42, the direction of movement of the moving plate 2 is precisely guided and limited. When the stamping rod 3 contacts the stamped part, the moving plate 2 continues to apply pressure as the cam 1 continues to rotate. At this time, the stamping rod 3 applies pressure to the stamped part to complete the stamping. When the stamping is completed and the required forming degree is reached, the rotation direction of the cam 1 changes or the moving plate 2 returns due to its irregular contour. During the return stroke, the interaction between the outer peripheral wall of the cam 1 and the first bearing 41 and the second bearing 42 causes the moving plate 2 to move in the opposite direction in a straight line, driving the stamping rod 3 away from the stamped part and back to the initial position. The first bearing 41 and the second bearing 42 also play a role in guiding and stabilizing the moving plate 2 during the return stroke, ensuring that the stamping mechanism can smoothly complete a complete stamping cycle and prepare for the next stamping operation.

[0034] In this embodiment, the limiting groove 201 provides precise constraint and guidance for the rotation of the cam 1 and the linear motion of the moving plate 2. The cam 1 is installed in the limiting groove 201, and its outer peripheral wall contacts the outer peripheral walls of the first bearing 41 and the second bearing 42. This arrangement ensures that during the rotation of the cam 1, the outer peripheral wall of the cam 1 can accurately push the moving plate 2, causing the moving plate 2 to move linearly in a direction perpendicular to the limiting groove 201. This avoids the moving plate 2 from deflecting or wobbling during the movement, thereby improving the linearity and stability of the stamping rod 3. The structure of the limiting groove 201 enables the rotational motion of the cam 1 to be effectively converted into the linear motion of the moving plate 2. During the rotation, the cam 1 gradually pushes the moving plate 2, and through the constraint of the limiting groove 201, the rotational motion is converted into linear motion, realizing the action of the stamping rod 3 moving closer to or away from the stamping part. The limiting groove 201 between the first bearing 41 and the second bearing 42 ensures the accuracy of the relative movement between the cam 1 and the moving plate 2. The high precision and low friction characteristics of the bearings enable the cam 1 to rotate smoothly and accurately convert the rotational motion into the linear motion of the moving plate 2. This precise motion conversion is crucial for ensuring the dimensional accuracy and surface quality of the stamped parts. The presence of the limiting groove 201 provides stable support for the cam 1 during rotation. The first bearing 41 and the second bearing 42 not only reduce the friction between the cam 1 and the moving plate 2 but also withstand the radial and axial forces generated when the cam 1 rotates, thereby improving the motion stability of the entire stamping mechanism. The setting of the limiting groove 201 allows the movement between the cam 1 and the moving plate 2 to be coordinated. The rotational speed and torque of the cam 1 can be accurately transmitted to the moving plate 2 through the limiting groove 201, thereby achieving precise control of the movement speed and stamping force of the moving plate 2 during the stamping process and meeting the requirements of different stamping processes.

[0035] In one specific implementation, the mounting end face 21 is a plane, the moving plate 2 is vertically set, the mounting end face 21 faces the cam 1, and two mounting columns are set on the mounting end face 21. The first bearing 41 is set above the second bearing 42. The limiting groove 201 is actually formed by two bearings. Combined with the irregular structure of the cam 1, it can ensure that the cam 1 will not come out of the limiting groove 201 during rotation. After this setting, the rotational motion of the cam 1 can be converted into the linear movement of the moving plate 2, thereby driving the stamping rod 3 to move up and down reciprocally in the vertical direction.

[0036] See also Figure 1 and Figure 2 As shown, the movable plate 2 includes a first plate body 202 and a second plate body 203. The first plate body 202 is vertically arranged and has a mounting end face 21. One end face of the second plate body 203 is connected to the first plate body 202, and a stamping rod 3 is provided on the other end face of the second plate body 203.

[0037] Specifically, when the stamping mechanism is stationary, the moving plate 2 is in its initial position. The first plate 202 is vertically arranged, and the second plate 203 is perpendicularly connected to the first plate 202. The stamping rod 3 is located at the end of the second plate 203 away from the first plate 202 and away from the stamped part. The cam 1 is installed in the limiting groove 201 formed by the first bearing 41 and the second bearing 42. When the cam 1 rotates, the outer peripheral wall of the cam 1 contacts the outer peripheral walls of the first bearing 41 and the second bearing 42. As it rotates, it gradually pushes the first plate 202. Since the first plate 202 is vertically arranged, this pushing action causes the first plate 202 to move linearly along a direction perpendicular to the limiting groove 201. The first plate 202 moves horizontally under the push of the cam 1, simultaneously moving the second plate 203, which is vertically connected to it, along with it. Due to the vertical structure between the second plate 203 and the first plate 202, the second plate 203 remains stable. As the second plate 203 moves, the stamping rod 3 gradually approaches the stamping part. Throughout the movement, the vertical connection between the first plate 202 and the second plate 203 ensures the linearity and stability of the stamping rod 3's movement. The cam 1 causes the first plate 202 to move in the opposite direction, moving the second plate 203 and the stamping rod 3 away from the stamping part and back to their initial position. The vertical connection between the first plate 202 and the second plate 203 also remains stable during the return stroke, preparing for the next stamping operation.

[0038] In this embodiment, the first plate 202 is vertically arranged, and the second plate 203 is perpendicularly connected to the first plate 202, forming a stable right-angle structure. This structure can effectively resist various forces generated during the stamping process, including stamping force and inertial force, enhancing the structural stability of the entire moving plate 2 and making it less prone to deformation or twisting when subjected to stamping loads. During the stamping process, the stamping rod 3 transmits the stamping force to the second plate 203. Since the second plate 203 is perpendicularly connected to the first plate 202, the stamping force can be dispersed to the first plate 202 through the connection between the second plate 203 and the first plate 202, and then further dispersed to the entire moving plate 2 structure by the first plate 202. This avoids local stress concentration and improves the load-bearing capacity and fatigue life of the moving plate 2. The first plate 202 is vertically positioned, providing stable guidance for the linear movement of the moving plate 2. Driven by the cam 1, the first plate 202 moves linearly along a direction perpendicular to the limiting groove 201. The vertical positioning of the first plate 202 ensures the accuracy and stability of the movement direction. Meanwhile, the second plate 203 is connected to the first plate 202, ensuring the perpendicularity of the movement direction of the stamping rod 3 to the plane of the stamped part, thus improving stamping accuracy. By configuring the moving plate 2 with a vertically positioned first plate 202 and a vertically connected second plate 203, a more compact layout can be achieved. The vertically positioned first plate 202 makes full use of vertical space, while the horizontally extended second plate 203 allows the stamping rod 3 to be positioned appropriately, close to the stamped part. This layout reduces the footprint of the stamping mechanism and improves the space utilization of the equipment.

[0039] See also Figures 1 to 4 As shown, the outer contour of the cam 1 includes a plurality of protrusions 101 distributed circumferentially. The protrusions 101 include a first working surface 111 and a second working surface 112. The first bearing 41 is in rolling contact with the first working surface 111 and the second working surface 112, and the second bearing 42 is in rolling contact with the first working surface 111 and the second working surface 112. When the first bearing 41 is in contact with one working surface, the second bearing 42 is in contact with the other working surface.

[0040] Specifically, in the initial position, the first working surface 111 of one protrusion 101 of cam 1 contacts the first bearing 41, while the second working surface 112 of the other protrusion contacts the second bearing 42. As cam 1 rotates, its outer peripheral wall begins to roll against the outer peripheral walls of the first bearing 41 and the second bearing 42. With further rotation, the protrusion 101 of cam 1 gradually pushes the first bearing 41 and the second bearing 42. When cam 1 rotates to a certain extent, the first bearing 41 switches from contact with the first working surface 111 of one protrusion 101 to contact with the second working surface 112 of the next protrusion 101. Simultaneously, the second bearing 42 switches from contact with the second working surface 112 of the first protrusion 101 to contact with the first working surface 111 of the next protrusion 101. This switching ensures that cam 1 always has one protrusion 101 in contact with the first bearing 41 and the second bearing 42 during rotation, thus achieving continuous pushing action. Driven by cam 1, the moving plate 2 moves linearly. Due to the presence of the first bearing 41 and the second bearing 42, the direction of movement of the moving plate 2 is precisely guided and restricted. The stamping rod 3 gradually approaches the stamped part as the moving plate 2 moves. When the stamping is completed and the required forming degree is reached, the rotation direction of cam 1 uses its irregular contour to achieve the return stroke of the moving plate 2. During the return stroke, the protrusion 101 of cam 1 continues to roll contact with the first bearing 41 and the second bearing 42, causing the moving plate 2 to move linearly in the opposite direction. As cam 1 continues to rotate, the working surfaces of the first bearing 41 and the second bearing 42 and the protrusion 101 of cam 1 switch again, ensuring that the moving plate 2 moves smoothly in the opposite direction, driving the stamping rod 3 away from the stamped part and back to the initial position. This switching process ensures the smoothness and accuracy of the return stroke.

[0041] In this embodiment, when the cam 1 rotates to a certain extent, the first bearing 41 switches from contacting the first working surface 111 of one protrusion 101 to contacting the second working surface 112 of the next protrusion 101. Simultaneously, the second bearing 42 switches from contacting the second working surface 112 of one protrusion 101 to contacting the first working surface 111 of the next protrusion 101. This switching ensures that during the rotation of the cam 1, the first bearing 41 and the second bearing 42 are in contact with different working surfaces, thereby achieving continuous pushing action, avoiding interruptions in the pushing process, and ensuring that the moving plate 2 and the stamping rod 3 can smoothly and continuously approach the stamped part. The arrangement of multiple protrusions 101 and working surfaces on the cam 1, along with the rolling contact between the first bearing 41 and the second bearing 42, provides precise guidance for the linear movement of the moving plate 2. The rolling contact between the bearings and the cam 1 reduces friction, making the movement of the moving plate 2 smoother, while ensuring the accuracy and stability of the movement direction. This structure effectively prevents the moving plate 2 from shifting or wobbling during movement, improving the motion accuracy of the stamping rod 3 and thus ensuring the dimensional accuracy and surface quality of the stamped parts. The rolling contact between the protrusion 101 of the cam 1 and the bearing can withstand large radial and axial forces, ensuring the stable transmission of stamping force. During the stamping process, the rotation of the cam 1 evenly transmits the force to the moving plate 2 and the stamping rod 3, avoiding sudden changes or fluctuations in force and improving the stability of the stamping process.

[0042] In this embodiment, since the first working surface 111 and the second working surface 112 alternately contact the first bearing 41 and the second bearing 42, wear is evenly distributed on multiple contact points of the cam 1 and the bearings. This uniform wear distribution extends the service life of the cam 1 and the bearings, and reduces maintenance frequency and cost. By adjusting the rotational speed and torque of the cam 1, as well as changing the shape of the protrusion 101 and the working surface parameters of the cam 1, different stamping process requirements can be adapted. The flexibility of this structure enables the stamping mechanism to meet the needs of various complex stamping tasks, such as different stamped parts shapes, sizes, and precision requirements.

[0043] In one specific implementation, the cam 1 has three protrusions 101 arranged circumferentially. The number of protrusions 101 is set according to the stamping requirements. In other embodiments, more than three protrusions 101 can be provided according to specific stamping requirements. The cam 1 can be made of wear-resistant materials (such as cemented carbide, ceramic, or surface-hardened steel) to improve its wear resistance. High-quality lubricating oil or grease should be used to reduce friction between the cam 1 and the bearing. The wear condition of the cam 1 should be checked regularly, and severely worn cam 1s should be replaced in a timely manner to avoid a decrease in accuracy due to excessive wear.

[0044] See also Figures 1 to 4As shown, the first working surface 111 is a concave surface, and the second working surface 112 is a convex surface. When the first bearing 41 rotates and contacts the first working surface 111 of a protrusion 101, the second bearing 42 rotates in the opposite direction relative to the first bearing 41 and abuts against the second working surface 112 of another protrusion 101. The moving plate 2 drives the stamping rod 3 to approach the stamping part. When the first bearing 41 rotates and contacts the second working surface 112 of a protrusion 101, the second bearing 42 rotates in the opposite direction relative to the first bearing 41 and abuts against the first working surface 111 of another protrusion 101. The moving plate 2 drives the stamping rod 3 away from the stamping part.

[0045] Specifically, in the initial position, the first working surface 111 (concave surface) of one protrusion 101 of cam 1 contacts the first bearing 41, while the second working surface 112 (convex surface) of the other protrusion contacts the second bearing 42. As cam 1 rotates, its outer peripheral wall begins to roll against the outer peripheral walls of the first bearing 41 and the second bearing 42. With further rotation, the protrusion 101 of cam 1 gradually pushes the first bearing 41 and the second bearing 42. When the first bearing 41 rotates and contacts the first working surface 111 (concave surface) of one protrusion 101, the second bearing 42 rotates in the opposite direction relative to the first bearing 41 and abuts against the second working surface 112 (convex surface) of the other protrusion 101. This contact state causes cam 1 to push the moving plate 2, driving the stamping rod 3 closer to the stamping part; when the first bearing 41 rotates and contacts the second working curved surface 112 (outer convex surface) of a protrusion 101, the second bearing 42 rotates in the opposite direction relative to the first bearing 41 and abuts against the first working curved surface 111 (inner concave surface) of another protrusion 101. This contact state causes cam 1 to pull the moving plate 2, driving the stamping rod 3 away from the stamping part.

[0046] In this embodiment, when the first bearing 41 contacts the first working surface 111 (concave surface) and the second bearing 42 rotates in the opposite direction relative to the first bearing 41 and abuts against the second working surface 112 (convex surface), the moving plate 2 ensures that the stamping rod 3 moves stably closer to the stamped part. Conversely, when the first bearing 41 contacts the second working surface 112 and the second bearing 42 rotates in the opposite direction relative to the first bearing 41 and abuts against the first working surface 111, the moving plate 2 moves the stamping rod 3 away from the stamped part. This arrangement achieves precise control over the movement direction of the stamping rod 3, ensuring the accuracy and repeatability of the stamping process, enabling the stamping rod 3 to move closer to and away from the stamped part according to a predetermined trajectory, thus improving the processing accuracy of the stamped part. Through the cooperation of the first bearing 41 and the second bearing 42 with different working surfaces, the rotational motion of the cam 1 can be continuously and smoothly converted into the linear motion of the moving plate 2. During the rotation of cam 1, the rolling contact between the bearing and the working surface reduces friction and impact during movement, making the movement of the moving plate 2 smoother. This avoids equipment vibration and processing errors in stamped parts caused by discontinuous movement or impact, improving the working stability and reliability of the stamping mechanism and ensuring the quality of the stamped parts. The cooperation between the first working surface 111 and the second working surface 112 with the first bearing 41 and the second bearing 42 provides high-precision motion guidance for the moving plate 2. The concave and convex surface design makes the contact between the bearing and cam 1 tighter and more stable, effectively limiting the offset and wobbling of the moving plate 2 during movement, ensuring that the stamping rod 3 always moves in the correct direction, improving the accuracy and quality of stamping, and ensuring the dimensional and shape accuracy of the stamped parts. The concave and convex working surface design makes the force distribution more uniform, reducing local stress concentration, avoiding premature component failure due to stress concentration, improving the durability and reliability of the entire stamping mechanism, enhancing the fatigue resistance of the equipment, enabling it to operate stably for a long time, and reducing the maintenance and replacement costs of the equipment.

[0047] See also Figures 1 to 4 As shown, it also includes a guide plate 5, which is fixedly installed. A slide rail channel is provided on the guide plate 5, and the movable plate 2 is installed in the slide rail channel. The movable plate 2 moves linearly along the slide rail channel.

[0048] Specifically, when stationary, the moving plate 2 is in its initial position, installed in the slide rail channel of the guide plate 5, with the stamping rod 3 away from the stamping part. The cam 1 rotates, and its outer peripheral wall rolls into contact with the outer peripheral walls of the first bearing 41 and the second bearing 42. As the cam 1 rotates, its protrusion 101 gradually pushes the first bearing 41 and the second bearing 42, beginning to push the moving plate 2. Under the push of the cam 1, the moving plate 2 moves linearly along the slide rail channel of the guide plate 5. The slide rail channel guides and stabilizes the movement of the moving plate 2. After stamping, the cam 1 uses its irregular contour to achieve the return stroke of the moving plate 2. During the return stroke, the protrusion 101 of the cam 1 continues to roll into contact with the first bearing 41 and the second bearing 42, causing the moving plate 2 to move linearly in the opposite direction along the slide rail track.

[0049] In this embodiment, the slide rail channel on the guide plate 5 provides a precise movement trajectory for the moving plate 2. Whether the moving plate 2 is close to the stamped part during the stamping process or away from the stamped part during the return stroke, the slide rail channel ensures that the moving plate 2 moves in a straight line, avoiding deviation and swaying. This precise guidance is crucial for ensuring the dimensional and shape accuracy of the stamped part. The cooperation between the slide rail channel and the moving plate 2 reduces the vibration and swaying of the moving plate 2 during movement, improving the stability of the entire stamping mechanism. Stable movement helps reduce impact and vibration during the stamping process, thereby extending the service life of the equipment and ensuring that the quality of the stamped part is not affected.

[0050] See also Figures 1 to 4 As shown, it also includes a bracket 6, a guide plate 5 is mounted on the bracket 6, one end face of the guide plate 5 is connected to the bracket 6, and a first guide arm 51 and a second guide arm 52 are provided on the other end face of the guide plate 5. The first guide arm 51 and the second guide arm 52 are arranged opposite to each other, and a slide rail channel is formed between the first guide arm 51 and the second guide arm 52. The inner walls of the first guide arm 51 and the second guide arm 52 respectively guide the side walls of the guide plate 5 to contact.

[0051] In this embodiment, the bracket 6 serves as the basic support component of the entire stamping mechanism, providing a robust mounting platform for other components. The guide plate 5 is mounted on the bracket 6, ensuring its fixed and stable position, thus providing a stable support foundation for the entire stamping mechanism. The bracket 6 and the guide plate 5 together form a rigid structure capable of withstanding various forces generated during the stamping process, including stamping force and inertial force. This rigid structure enhances the stability of the entire stamping mechanism, preventing deformation of the equipment during stamping and ensuring the precision of the stamped parts. The slide rail channel on the guide plate 5 provides a precise movement trajectory for the moving plate 2. The first guide arm 51 and the second guide arm 52 are arranged opposite each other to form a slide rail channel, ensuring that the moving plate 2 moves in a straight line. This precise guiding action ensures that the stamping rod 3 can accurately align with the stamped parts, improving the stamping accuracy and quality.

[0052] See also Figures 1 to 4 As shown, it also includes a rotating shaft 7, which is arranged horizontally, and the movable plate 2 is arranged vertically. The bracket 6 is provided with a rotating groove. One end of the rotating shaft 7 is installed in the rotating groove, and the other end of the rotating shaft 7 is equipped with a cam 1. The rotation of the rotating shaft 7 drives the cam 1 to rotate.

[0053] Specifically, the movable plate 2 is in its initial position, vertically installed in the slide rail channel of the guide plate 5. The stamping rod 3 is away from the stamping part. The cam 1 is installed at one end of the rotating shaft 7, and the other end of the rotating shaft 7 is installed in the rotating groove of the bracket 6. The rotating shaft 7 rotates in the rotating groove of the bracket 6. The rotation of the rotating shaft 7 drives the cam 1 to rotate. The outer peripheral wall of the cam 1 rolls into contact with the outer peripheral walls of the first bearing 41 and the second bearing 42. As the cam 1 rotates, its protrusion 101 gradually pushes the first bearing 41 and the second bearing 42, and begins to push the movable plate 2. Under the push of the cam 1, the movable plate 2 moves linearly along the slide rail channel of the guide plate 5. Driven by cam 1, the movable plate 2 moves linearly along the slide rail channel of guide plate 5. After the stamping rod 3 contacts the stamped part, cam 1 continues to rotate, and the movable plate 2 continues to apply pressure. After stamping is completed, the rotating shaft 7 rotates in the opposite direction, causing cam 1 to rotate in the opposite direction. During the reverse rotation, the protrusion 101 of cam 1 continues to roll contact with the first bearing 41 and the second bearing 42, causing the movable plate 2 to move linearly in the opposite direction along the slide rail channel. Pulled by cam 1, the movable plate 2 drives the stamping rod 3 away from the stamped part and returns to the initial position. The slide rail channel continues to guide and stabilize the movement of the movable plate 2, ensuring the smoothness and accuracy of the return stroke.

[0054] In this embodiment, the bracket 6 provides a stable foundation for the entire stamping mechanism. The guide plate 5 is mounted on the bracket 6, and its slide rail channel is formed by the first guide arm 51 and the second guide arm 52, providing precise guidance for the linear movement of the moving plate 2. This arrangement ensures that the moving plate 2 moves stably along a predetermined path during the stamping process, improving the accuracy and quality of the stamping. The rotating shaft 7 is arranged laterally, with one end installed in the rotating groove of the bracket 6 and the other end installed with the cam 1. When the rotating shaft 7 rotates, the cam 1 rotates accordingly, converting the rotational motion into a linear push or pull on the moving plate 2. This motion conversion is the core of the stamping process, ensuring that the stamping rod 3 can approach or move away from the stamped part according to a predetermined trajectory. The bracket 6, guide plate 5, rotating shaft 7, cam 1, moving plate 2, bearings, and stamping rod 3 work together to form a complete stamping system. The interaction between the components ensures precise control and efficient execution of the stamping process. From the transmission of power to the conversion of motion, and then to the execution of the stamping action, each step depends on the close cooperation of the components to jointly complete the high-quality stamping task.

[0055] See also Figures 1 to 4As shown, it also includes a drive component 8, which includes a motor 801, a worm gear 802 and a turbine 803. The motor 801 is mounted on the bracket 6, the turbine 803 is sleeved on the rotating shaft 7, one end of the worm gear 802 is connected to the output shaft of the motor 801, and the other end of the worm gear 802 meshes with the tooth groove of the turbine 803.

[0056] Specifically, the stamping mechanism is stationary, the moving plate 2 is in its initial position, vertically installed in the slide rail channel of the guide plate 5, the stamping rod 3 is away from the stamped part, the cam 1 is installed at one end of the rotating shaft 7, and the other end of the rotating shaft 7 is installed in the rotating groove of the bracket 6. The motor 801 of the drive component 8 is installed on the bracket 6, one end of the worm gear 802 is connected to the output shaft of the motor 801, and the other end meshes with the tooth groove of the worm gear 803, which is sleeved on the rotating shaft 7. After receiving the work command, the stamping mechanism starts the motor 801, and the output shaft of the motor 801 drives the worm gear 802 to rotate. The worm gear 802 meshes with the worm gear 803, transmitting the rotational motion to the worm gear 803, which is sleeved on the rotating shaft 7, thereby driving the rotating shaft 7 to rotate in the rotating groove of the bracket 6. The rotation of the rotating shaft 7 further drives the cam 1 to rotate. When cam 1 rotates, its outer peripheral wall rolls into contact with the outer peripheral walls of the first bearing 41 and the second bearing 42. As cam 1 rotates, its protrusion 101 gradually pushes the first bearing 41 and the second bearing 42, thus beginning to push the moving plate 2. Under the push of cam 1, the moving plate 2 moves linearly along the slide rail channel of the guide plate 5, and the stamping rod 3 gradually approaches the stamped part as the moving plate 2 moves. After the stamping rod 3 contacts the stamped part, cam 1 continues to rotate, and the moving plate 2 continuously applies pressure. By adjusting the speed and torque of motor 801, the rotational speed of cam 1 and the applied stamping force can be precisely controlled to meet different stamping process requirements.

[0057] In this embodiment, the stamping of complex-shaped parts requires precise control of the movement trajectory, pressure, and speed of the stamping rod 3. Traditional hydraulic drive systems, due to limitations in control precision and response speed, struggle to accurately control these parameters, resulting in inconsistent stamping accuracy. The stamping mechanism driven by the servo motor 801 can achieve high-precision closed-loop control by providing real-time feedback of position and speed information through an encoder. Hydraulic systems typically rely on proportional valves or servo valves to regulate flow and pressure, but due to the compressibility of hydraulic oil and the inertia of the system, their control precision and response speed are generally inferior to those driven by the servo motor 801. As a power source, the motor 801 can rotate at a precise speed. Through the transmission of the worm gear 802 and the turbine 803, precise speed control of the rotating shaft 7 and its cam 1 can be achieved. This allows the moving speed of the moving plate 2 and the stamping speed to be precisely adjusted according to the requirements of the stamping process, thereby ensuring the quality and precision of the stamped parts. The motor 801 can provide stable torque output, and the transmission of the worm gear 802 and the turbine 803 can further adjust, amplify, or reduce the torque to adapt to different stamping requirements. The worm gear 802 and worm wheel 803 are self-locking, meaning that when the motor 801 stops rotating, the worm wheel 803 cannot drive the motor 801 to rotate in the reverse direction via the worm gear 802. This feature effectively prevents the shaft 7 from rotating in the reverse direction during the stamping process due to external impacts or inertia, thus ensuring the positional accuracy and safety of the stamping mechanism. The motor 801 is mounted on the bracket 6, providing a stable foundation for the entire drive system. The stable operation of the motor 801 reduces vibration and sway, improving the reliability of the drive system. The motor 801 can be integrated with the control system to achieve automated control. By programming the operation of the motor 801, complex stamping processes can be implemented, improving production efficiency and automation levels.

[0058] A stamping machine includes a stamping structure, wherein the stamping structure is as described above.

[0059] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0060] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A stamping structure, characterized by, include: Cam (1), moving plate (2), and stamping rod (3); The movable plate (2) has a mounting end face (21), and a limiting groove (201) is formed on the mounting end face (21). The cam (1) is rotatably mounted in the limiting groove (201), and the rotation of the cam (1) drives the movable plate (2) to move linearly. The moving plate (2) is provided with the stamping rod (3) at one end away from the limiting groove (201). The moving plate (2) drives the stamping rod (3) to move closer to or away from the stamping part.

2. The stamping structure of claim 1, wherein, The mounting end face (21) is provided with a first bearing (41) and a second bearing (42), the first bearing (41) and the second bearing (42) are arranged opposite to each other, and the limiting groove (201) is formed between the first bearing (41) and the second bearing (42). The outer peripheral wall of the cam (1) contacts the outer peripheral walls of the first bearing (41) and the second bearing (42) respectively.

3. The stamping structure of claim 2, wherein, The outer contour of the cam (1) includes a plurality of protrusions (101) distributed circumferentially. The protrusions (101) include a first working surface (111) and a second working surface (112). The first bearing (41) is in rolling contact with the first working surface (111) and the second working surface (112). The second bearing (42) is in rolling contact with the first working surface (111) and the second working surface (112). When the first bearing (41) is in contact with one working surface, the second bearing (42) is in contact with the other working surface.

4. The stamping structure of claim 3, wherein, The first working surface (111) is a concave surface, and the second working surface (112) is a convex surface. When the first bearing (41) rotates and contacts the first working surface (111) of one of the protrusions (101), the second bearing (42) rotates in the opposite direction relative to the first bearing (41) and abuts against the second working surface (112) of the other protrusion (101), and the moving plate (2) drives the stamping rod (3) to approach the stamping part; when the first bearing (41) rotates and contacts the second working surface (112) of one of the protrusions (101), the second bearing (42) rotates in the opposite direction relative to the first bearing (41) and abuts against the first working surface (111) of the other protrusion (101), and the moving plate (2) drives the stamping rod (3) away from the stamping part.

5. The stamping structure of claim 1, wherein, The movable plate (2) includes a first plate body (202) and a second plate body (203). The first plate body (202) is vertically arranged and has the mounting end face (21). One end face of the second plate body (203) is connected to the first plate body (202), and the other end face of the second plate body (203) is provided with the stamping rod (3).

6. The stamping structure of claim 1, wherein, It also includes a guide plate (5), which is fixedly installed. A slide rail channel is provided on the guide plate (5), and the movable plate (2) is installed in the slide rail channel. The movable plate (2) moves linearly along the slide rail channel.

7. The stamping structure of claim 6, wherein, It also includes a bracket (6), the guide plate (5) is mounted on the bracket (6), one end face of the guide plate (5) is connected to the bracket (6), and a first guide arm (51) and a second guide arm (52) are provided on the other end face of the guide plate (5). The first guide arm (51) and the second guide arm (52) are arranged opposite to each other, and the slide rail channel is formed between the first guide arm (51) and the second guide arm (52). The inner walls of the first guide arm (51) and the second guide arm (52) respectively contact the side wall of the guide plate (5).

8. The stamping structure of claim 7, wherein, It also includes a rotating shaft (7), which is arranged horizontally, the moving plate (2) is arranged vertically, the bracket (6) is provided with a rotating groove, one end of the rotating shaft (7) is installed in the rotating groove, and the other end of the rotating shaft (7) is installed with the cam (1). The rotation of the rotating shaft (7) drives the cam (1) to rotate.

9. The stamping structure of claim 8, wherein, It also includes a drive component (8), which includes a motor (801), a worm (802) and a turbine (803). The motor (801) is mounted on the bracket (6), and the turbine (803) is sleeved on the rotating shaft (7). One end of the worm (802) is connected to the output shaft of the motor (801), and the other end of the worm (802) meshes with the tooth groove of the turbine (803).

10. A punch press comprising a punch structure, characterized in that The stamping structure is the stamping structure according to any one of claims 1 to 9.

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