Punch body stabilizing structure
By designing a stable structure on the punch press that allows the crank to drive the lifting plate and counterweight to move synchronously, the problem of instability of the punch press body during the movement of the stamping die is solved, thereby improving the stability and service life of the machine body.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO ZHONGXING INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-09
AI Technical Summary
During the up-and-down movement of the punch press body in the stamping die, the reaction force is large, which causes the machine body to be unstable, affecting the service life and working stability of the equipment.
A stable structure including a frame, crank, lifting plate and counterweight is designed. The crank drives the lifting plate and counterweight to move synchronously. The reaction force of the counterweight counteracts the reaction force of the stamping die, thereby improving the stability of the machine body.
This effectively reduces the force transmitted from the crank to the machine body, improves the stability and service life of the punch press, and reduces the failure rate.
Smart Images
Figure CN224335169U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of components for punch presses, and in particular to a stabilizing structure for a punch press body. Background Technology
[0002] The punch press uses a crank to drive the stamping die up and down through a connecting rod structure. Since the stamping die itself has a large mass, when it moves up and down, it will generate a large reaction force on the machine body through the connecting rod and crank, which will change the contact pressure between the machine body and the ground. If no restraint is used to constrain the machine body and the ground, the placement stability of the machine body will be relatively poor. Summary of the Invention
[0003] The purpose of this application is to provide a stamping die transmission structure that can effectively improve the stability of the punch press body.
[0004] To achieve the above objectives, this application provides a stabilizing structure for a punch press body: comprising a frame, a crank, a lifting plate, and a counterweight. The frame includes a pair of crossbeams, each crossbeam having a guide post fixedly connected to its bottom surface. All guide posts are parallel. Each crossbeam has a diagonal cantilever fixedly connected to its top surface. The projections of the two diagonal cantilevers on the left-right plane are symmetrical about the vertical line. The crank is rotatably connected to the two diagonal cantilevers. The crank includes a central pivot shaft. One end of the central pivot shaft is connected to a left connecting plate via a central connecting plate. The left connecting plate is connected to a left second connecting plate via a left pivot shaft. The other end of the central pivot shaft is connected to a right connecting plate via a central second connecting plate. The right connecting plate is connected to a right... The rotating shaft is connected to the right two connecting plates; the axes of the central rotating shaft, left rotating shaft and right rotating shaft are parallel, and the projection of the axes of the central rotating shaft, left rotating shaft and right rotating shaft on the plane extending in the up, down and forward and backward directions is a point, and the three points form an isosceles triangle. The lifting plate and the guide column cooperate to form a sliding pair. The lifting plate is movably connected to the central rotating shaft through the lower connecting rod. There are two counterweights, which cooperate with the two inclined cantilever arms to form sliding pairs. The counterweight on the left side is movably connected to the left rotating shaft through an upper connecting rod, and the counterweight on the right side is movably connected to the right rotating shaft through another upper connecting rod. Under the drive of the crank, the lifting plate and the two counterweights can move synchronously.
[0005] As a preferred embodiment, the middle connecting plate is parallel to the middle second connecting plate, the left first connecting plate is parallel to the left second connecting plate, the left second connecting plate is also connected to a first main shaft, the right first connecting plate is parallel to the right second connecting plate, the right second connecting plate is also connected to a second main shaft, the axis of the first main shaft is collinear with the axis of the second main shaft, and the lower ends of the two inclined cantilever arms are provided with main shaft holes, which are suitable for cooperating with the first main shaft and the second main shaft respectively to form a rotating pair. The projections of the middle first connecting plate, the left first connecting plate and the right first connecting plate on the plane extending in the up-down and front-back directions are equidistantly arranged around the axis of the first main shaft, which makes it easier to perform mass balancing.
[0006] As a preferred embodiment, each of the inclined cantilever arms has a T-shaped groove on its side, and the counterweight has a T-shaped slide bar on its side, which is suitable for cooperating with the T-shaped groove to form a sliding pair, which can stably restrict the sliding counterweight.
[0007] As a preferred embodiment, the extension direction of the T-shaped groove is parallel to the extension direction of the inclined cantilever, and the T-shaped groove extends through the upper end of the inclined cantilever, facilitating the installation and removal of the counterweight.
[0008] As a preferred embodiment, one end of the upper connecting rod has a lower shaft hole and the other end has an upper shaft hole. The lower shaft hole is suitable for the left or right rotating shaft to pass through to form a rotating pair. The lower end of the counterweight is connected to a push-pull shaft through an extension plate. The end of the push-pull shaft passes through the upper shaft hole and is fixedly connected to a limit ring to prevent the counterweight from becoming loose from the upper connecting rod.
[0009] As a preferred embodiment, a hinge frame is fixedly connected to the upper surface of the lifting plate, and the upper end of the lower connecting rod is rotatably connected to the central pivot shaft and the lower end is rotatably connected to the hinge frame, ensuring that the lower connecting rod can smoothly make adaptive height and angle adjustments.
[0010] As a preferred embodiment, the lifting plate has guide holes at its four corners that penetrate the upper and lower surfaces, which cooperate with the four guide posts to form sliding pairs, thereby constraining the degree of freedom of the lifting plate and improving the stability of its movement.
[0011] As a preferred embodiment, the lower ends of the guide columns connecting the two crossbeams are fixedly connected by a bridging plate to limit the stability of the spacing between the two crossbeams.
[0012] Compared with the prior art, the beneficial effects of this application are as follows:
[0013] (1) By designing a pair of counterweights that can slide along the inclined direction and by synchronously linking the crank with the lifting plate, the reaction force of the lifting plate during movement can be effectively offset, thereby reducing the force of the crank to transmit to the punch press body. This transmission structure improves the stability of the punch press body.
[0014] (2) The design layout is reasonable, the structure is compact, the working stability is high, the force of each component is balanced, it is not easy to be damaged, the failure rate is low, and the service life can be well guaranteed. Attached Figure Description
[0015] Figure 1 This is a first three-dimensional schematic diagram of the overall structure of the stabilizing structure of the punch press body.
[0016] Figure 2 This is a second three-dimensional schematic diagram of the overall structure of the stabilizing structure of the punch press body.
[0017] Figure 3 This is a side plan view of the stabilizing structure of the punch press body.
[0018] Figure 4 This is a three-dimensional schematic diagram of the main structure of the stabilizing structure of the punch press body.
[0019] Figure 5 This is a three-dimensional structural diagram of the crank that forms the stabilizing structure of the punch press body.
[0020] Figure 6 A three-dimensional structural diagram of the lifting plate, which is the stabilizing structure of the punch press body.
[0021] Figure 7 This is a schematic diagram of the first three-dimensional structure connecting the upper connecting rod and the counterweight of the stabilizing structure of the punch press body.
[0022] Figure 8 This is a schematic diagram of the second three-dimensional structure connecting the upper connecting rod and the counterweight of the stabilizing structure of the punch press body.
[0023] Figure 9 This is a three-dimensional structural diagram of the upper connecting rod of the stabilizing structure of the punch press body.
[0024] Figure 10 This is a schematic diagram of the first three-dimensional structure of the counterweight block, which is part of the stabilizing structure of the punch press body.
[0025] Figure 11 This is a schematic diagram of the second three-dimensional structure of the counterweight block, which is part of the stabilizing structure of the punch press body.
[0026] Figure 12 This is a three-dimensional structural diagram of the frame of the punch press, which serves as the stabilizing structure of the machine body.
[0027] In the diagram: 1. Crank; 111. Central shaft; 112. Central connecting plate 1; 113. Central connecting plate 2; 121. Left shaft; 122. Left connecting plate 1; 123. Left connecting plate 2; 124. First main shaft; 131. Right shaft; 132. Right connecting plate 1; 133. Right connecting plate 2; 134. Second main shaft; 2. Lower connecting rod; 3. Lifting plate; 301. Hinge frame; 302. Guide hole; 4. Frame; 401. Crossbeam; 402. Guide column; 403. Inclined cantilever; 404. T-shaped slide rail; 405. Bridge plate; 406. Main shaft hole; 5. Upper connecting rod; 501. Lower shaft hole; 502. Upper shaft hole; 6. Counterweight; 601. Extension plate; 602. T-shaped slide bar; 603. Push-pull shaft; 604. Limiting ring. Detailed Implementation
[0028] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0029] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.
[0030] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0031] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0032] like Figure 1-12 The punch press machine body stabilization structure shown includes a fixed frame 4, and a crank 1, a lifting plate 3, and a counterweight 6 that are movable relative to the frame 4. The frame 4 includes a pair of parallel and symmetrical crossbeams 401. Normally, the crossbeams 401 extend in the front-to-back direction. Each crossbeam 401 has a guide post 402 fixedly connected to its bottom surface. There are two guide posts 402 under each crossbeam 401, one near the front end and the other near the rear end of the crossbeam 401, meaning there are a total of four guide posts 402. The columns 402 are parallel and vertical. The lower ends of the guide columns 402 connected by the two crossbeams 401 are fixedly connected by the bridge plate 405. This can ensure the stability of the distance between the two crossbeams 401. Each crossbeam 401 has a fixedly connected inclined cantilever 403 on its top surface. The projections of the two inclined cantilever 403 on the left-right plane are symmetrical about the vertical line. In this embodiment, the inclined cantilever 403 on the left extends forward at an angle, and the inclined cantilever 403 on the right extends backward at an angle. The included angle of the projections on the left-right plane is 120°.
[0033] Crank 1 is rotatably connected to both inclined cantilever arms 403. The specific structure of crank 1 includes a central pivot shaft 111. One end of the central pivot shaft 111 is connected to a left connecting plate 122 via a central connecting plate 112. One end of the central connecting plate 112 is fixedly connected to the central pivot shaft 111, and the other end is fixedly connected to the left connecting plate 122. The left connecting plate 122 is connected to a left second connecting plate 123 via a left pivot shaft 121. One end of the left connecting plate 122 is fixedly connected to the central connecting plate 112, and the other end is fixedly connected to the left pivot shaft 121. The other end of the central pivot shaft 111 is connected to a right connecting plate 132 via a central second connecting plate 113. One end of the central second connecting plate 113 is fixedly connected to the central pivot shaft 111, and the other end is fixedly connected to the right connecting plate 132. The central connecting plate 112 and the central second connecting plate 113 are parallel and aligned at both ends. The left connecting plate 122 and the left second connecting plate... 123 are also parallel and aligned at both ends. The left second connecting plate 123 is also connected to the first main shaft 124. One end of the left second connecting plate 123 is fixedly connected to the left rotating shaft 121 and the other end is fixedly connected to the first main shaft 124. The right first connecting plate 132 is connected to the right second connecting plate 133 through the right rotating shaft 131. The right first connecting plate 132 and the right second connecting plate 133 are parallel. The right second connecting plate 133 is also connected to the second main shaft 134. One end of the right second connecting plate 133 is fixedly connected to the right rotating shaft 131 and the other end is fixedly connected to the second main shaft 134. The axis of the first main shaft 124 and the axis of the second main shaft 134 are collinear. The lower ends of the two inclined cantilever 403 are provided with main shaft holes 406. The two main shaft holes 406 are also coaxial and can be matched with the first main shaft 124 and the second main shaft 134 respectively to form a rotating pair, thereby restricting the degree of freedom of the crank 1.
[0034] The projections of the middle connecting plate 112, the left connecting plate 122, and the right connecting plate 132 onto the plane extending in the up-down and front-back directions are equidistant from the axis of the first main axis 124, that is, spaced at 120° intervals. The axes of the central rotating axis 111, the left rotating axis 121, and the right rotating axis 131 are parallel, and the projections of the axes of the central rotating axis 111, the left rotating axis 121, and the right rotating axis 131 onto the plane extending in the up-down and front-back directions are points. These three points form an isosceles triangle, and the axes of the first main axis 124 and the second main axis 134 pass through the geometric center of the triangle.
[0035] The lifting plate 3 and the guide column 402 cooperate to form a sliding pair. Normally, guide holes 302 that penetrate the upper and lower surfaces are opened at the four corners of the lifting plate 3, which cooperate with the four guide columns 402 to form a sliding pair. The lifting plate 3 is movably connected to the central shaft 111 through the lower connecting rod 2. The upper surface of the lifting plate 3 is fixedly connected to the hinge frame 301. The upper end of the lower connecting rod 2 is rotatably connected to the central shaft 111, and the lower end is rotatably connected to the hinge frame 301. When the crank 1 rotates, it will drive the lifting plate 3 to move up and down along the guide column 402 through the lower connecting rod 2.
[0036] There are two counterweights 6, which cooperate with the two inclined cantilever arms 403 to form a sliding pair. Each inclined cantilever arm 403 has a T-shaped groove 404 on its side. The extension direction of the T-shaped groove 404 is parallel to the extension direction of the inclined cantilever arm 403. The T-shaped groove 404 passes through the upper end of the inclined cantilever arm 403 to facilitate the disassembly and assembly of the counterweight 6. The side of the counterweight 6 has a T-shaped slide bar 602, which cooperates with the T-shaped groove 404 to form a sliding pair. Since the extension directions of the two inclined cantilever arms 403 are different, the restrained counterweight 6 will also move in two different directions, thereby balancing the reaction force of the moving parts in the horizontal and vertical directions.
[0037] The counterweight 6 on the left is movably connected to the left rotating shaft 121 via an upper connecting rod 5, and the counterweight 6 on the right is movably connected to the right rotating shaft 131 via another upper connecting rod 5. Therefore, there are two upper connecting rods 5 and two counterweights 6, with one upper connecting rod 5 and one counterweight 6 forming a pair. One end of the upper connecting rod 5 has a lower shaft hole 501, and the other end has an upper shaft hole 502. The lower shaft hole 501 is used for the left rotating shaft 121 or the right rotating shaft 131 to pass through to form a rotating pair. The lower end of the counterweight 6 is connected via an extension plate 601. There is a push-pull shaft 603, the axis of which is parallel to the main shaft of crank 1. The end of the push-pull shaft 603 passes through the upper shaft hole 502 and is fixedly connected to a limit ring 604. The push-pull shaft 603 and the upper shaft hole 502 cooperate to form a rotating pair. The limit ring 604 can be a bolt, which is used to prevent the counterweight 6 from separating from the upper connecting rod 5. The lower connecting rod 2 and the upper connecting rod 5 are just schematic diagrams. In fact, for the convenience of assembly, the lower connecting rod 2 and the upper connecting rod 5 will be designed as separate parts and then fixed into a whole by bolts and other connecting parts after assembly.
[0038] Working principle: The main shaft of crank 1 is connected to the output end of the punch press driver. When crank 1 rotates, it drives the lifting plate 3 to rise through the lower connecting rod 2. The two upper connecting rods 5 also drive the two counterweights 6 to move downward along their respective inclination directions. Overall, the lifting plate 3 and counterweights 6, which have a larger mass, will converge towards the direction of crank 1. When the lifting plate 3 descends, the two counterweights 6 will also move downward along their respective inclination directions. Overall, the lifting plate 3 and counterweights 6, which have a larger mass, will disperse away from the direction of crank 1. Whether they converge or disperse, the reaction force of the lifting plate 3 and counterweights 6 on the main shaft of crank 1 will be greatly canceled at the rotating shaft. In this way, the force transmitted from the main shaft of crank 1 to the punch press body through the frame 4 will be smaller, thus making the stability of the punch press body higher during operation.
[0039] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A punch machine body stabilizing structure characterized by comprising: include: The frame (4) includes a pair of crossbeams (401), each of which has a guide post (402) fixedly connected to its bottom surface. All the guide posts (402) are parallel, and each of the crossbeams (401) has a cantilever (403) fixedly connected to its top surface. The projections of the two cantilever arms (403) on the left-right plane are symmetrical about the vertical line. A crank (1) is rotatably connected to two inclined cantilever arms (403). The crank (1) includes a central pivot shaft (111). One end of the central pivot shaft (111) is connected to a left connecting plate (122) via a central connecting plate (112). The left connecting plate (122) is connected to a left second connecting plate (123) via a left pivot shaft (121). The other end of the central pivot shaft (111) is connected to the central second connecting plate (113). A right connecting plate (132) is connected, and the right connecting plate (132) is connected to a right second connecting plate (133) through a right rotating shaft (131); the axes of the central rotating shaft (111), the left rotating shaft (121) and the right rotating shaft (131) are parallel, and the projection of the axes of the central rotating shaft (111), the left rotating shaft (121) and the right rotating shaft (131) on the plane extending in the up, down and front and back directions is a point, and the three points form an isosceles triangle; The lifting plate (3) and the guide column (402) cooperate to form a sliding pair. The lifting plate (3) is movably connected to the central shaft (111) through the lower connecting rod (2). There are two counterweights (6), which cooperate with the two inclined cantilever arms (403) to form a sliding pair. The counterweight (6) on the left side is movably connected to the left rotating shaft (121) through an upper connecting rod (5), and the counterweight (6) on the right side is movably connected to the right rotating shaft (131) through another upper connecting rod (5).
2. The punch machine body stabilizing structure according to claim 1, characterized by: The middle connecting plate (112) is parallel to the middle second connecting plate (113), the left first connecting plate (122) is parallel to the left second connecting plate (123), the left second connecting plate (123) is also connected to the first main shaft (124), the right first connecting plate (132) is parallel to the right second connecting plate (133), the right second connecting plate (133) is also connected to the second main shaft (134), the axis of the first main shaft (124) is collinear with the axis of the second main shaft (134), the lower ends of the two inclined cantilever (403) are provided with main shaft holes (406), which are suitable for cooperating with the first main shaft (124) and the second main shaft (134) to form a rotating pair respectively. The projections of the middle first connecting plate (112), the left first connecting plate (122) and the right first connecting plate (132) on the plane extending in the up-down and front-back directions are equidistantly arranged around the axis of the first main shaft (124).
3. The punch press body stabilization structure as described in claim 2, characterized in that: Each of the inclined cantilever (403) has a T-shaped groove (404) on its side, and the counterweight (6) has a T-shaped slide bar (602) on its side, which is suitable for cooperating with the T-shaped groove (404) to form a sliding pair.
4. The punch press body stabilization structure as described in claim 3, characterized in that: The extension direction of the T-shaped groove (404) is parallel to the extension direction of the inclined cantilever (403), and the T-shaped groove (404) passes through the upper end of the inclined cantilever (403).
5. The punch press body stabilization structure as described in claim 4, characterized in that: The upper connecting rod (5) has a lower shaft hole (501) at one end and an upper shaft hole (502) at the other end. The lower shaft hole (501) is suitable for the left rotating shaft (121) or the right rotating shaft (131) to pass through to form a rotating pair. The lower end of the counterweight (6) is connected to a push-pull shaft (603) through an extension plate (601). The end of the push-pull shaft (603) passes through the upper shaft hole (502) and is fixedly connected to a limit ring (604).
6. The punch press body stabilizing structure as described in any one of claims 1 to 5, characterized in that: The upper surface of the lifting plate (3) is fixedly connected to a hinge frame (301), and the upper end of the lower connecting rod (2) is rotatably connected to the central rotating shaft (111) and the lower end is rotatably connected to the hinge frame (301).
7. The punch press body stabilization structure as described in claim 6, characterized in that: The lifting plate (3) has guide holes (302) at its four corners that penetrate the upper and lower surfaces, which cooperate with the four guide posts (402) to form sliding pairs.
8. The punch press body stabilization structure as described in claim 7, characterized in that: The lower ends of the guide posts (402) connected by the two beams (401) are fixedly connected by a bridging plate (405).