A compact structure press

Abstract

This invention discloses a compact press, comprising: a body component; a slider body disposed within the body component; a drive mechanism, which is pulsatorically connected to the slider body to drive the slider body to move up and down relative to the body component; and a transmission mechanism disposed within the body component for connecting the drive mechanism and the slider body, comprising n crankshaft assemblies, n+1 eccentric sleeves rotatably mounted on the body component, and n guide posts slidably disposed on the body component, wherein n≥1; each crankshaft assembly includes two opposing shoulders and crankshaft components rotatably disposed on the two shoulders, the two shoulders being rotatably supported on the eccentric sleeves on both sides via support shaft assemblies, one end of each guide post being rotatably connected to the crankshaft component and the other end being fixedly connected to the slider body, the radius of the eccentric sleeve being larger than the rotation radius of the crankshaft component. The press provided by this invention can improve pressure holding capacity and realize multi-point stamping.

Description

Technical Field

[0001] This invention relates to the field of mechanical press technology, and in particular to a compact press. Background Technology

[0002] Presses are machines used for cutting, punching, blanking, bending, riveting, and forming. In the existing technology, when a mechanical press is working, the electric motor drives the large pulley through the V-belt, which in turn drives the crank-slider mechanism through the gear pair and clutch, so that the slider and punch move downward in a straight line. However, ordinary crank-slider mechanisms have a connecting rod ratio of less than 0.3, poor pressure holding capacity at the bottom dead center, and difficulty in realizing multi-point structures.

[0003] The present invention was developed to address the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a compact press that can perform multi-point stamping.

[0005] Based on the above problems, the technical solution provided by the present invention is as follows:

[0006] A compact press includes:

[0007] fuselage components;

[0008] A slider body, which is disposed within the body component;

[0009] A drive mechanism is connected to the slider body to drive the slider body to move up and down relative to the body component;

[0010] A transmission mechanism, which is disposed within the body component and is used to connect the drive mechanism and the slider body, includes n crankshaft assemblies, n+1 eccentric sleeves rotatably mounted on the body component, and n guide posts slidably disposed on the body component, wherein n≥1;

[0011] The crankshaft assembly includes two oppositely arranged shoulders and a crankshaft component fixed on the two shoulders. The two shoulders are rotatably supported on eccentric sleeves on both sides via a support shaft assembly. One end of the guide post is rotatably connected to the crankshaft component and the other end is fixedly connected to the slider body. The radius of the eccentric sleeve is larger than the rotation radius of the crankshaft component.

[0012] In some of these embodiments, the fuselage components are divided into n working sections by n+1 partitions, each crankshaft assembly is arranged in a corresponding working section, and each eccentric sleeve is rotatably supported on a corresponding partition.

[0013] In some embodiments, the eccentric sleeve has a support hole at its eccentric position for the support shaft assembly to pass through, and the eccentric sleeve has an assembly process hole at its center.

[0014] In some embodiments, the eccentric sleeve is provided with a counterweight, which is arranged on both radial sides of the eccentric sleeve along with the support hole.

[0015] In some embodiments, the support shaft assembly includes a first support shaft disposed between two adjacent crankshaft assemblies and a second support shaft supported on an outer crankshaft assembly, the first support shaft / second support shaft being disposed within the support hole.

[0016] In some embodiments, the transmission mechanism further includes a transmission gear, which is fixed on an eccentric sleeve located on the outer side.

[0017] In some embodiments, the drive mechanism includes a drive component, a gear shaft that is pulverically connected to the drive component, and a drive gear disposed on the gear shaft, the drive gear meshing with the transmission gear.

[0018] In some embodiments, the drive component includes two drive motors disposed opposite each other, with the gear shaft disposed between the two drive motors.

[0019] In some embodiments, a transmission interval is provided between the outer partition and the fuselage component, and the transmission gear and drive gear are disposed within the transmission interval.

[0020] In some embodiments, the fuselage component is provided with a guide sleeve, and the guide post is slidably disposed within the guide sleeve.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] 1. The crankshaft assembly has a high connecting rod ratio, which makes the working curve of the force generation point smooth, facilitating the implementation of slow stamping and pressure holding processes;

[0023] 2. Multiple crankshaft assemblies are supported on multiple eccentric sleeves arranged in parallel to ensure consistency and synchronization;

[0024] 3. The transmission mechanism of this press adopts multiple crankshaft assemblies that are set separately. It is simple to manufacture and the synchronization is easy to adjust. It is especially suitable for multi-point stamping structures with horizontal crankshafts. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is one of the structural schematic diagrams of an embodiment of a compact press according to the present invention;

[0027] Figure 2 This is a second structural schematic diagram of an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the transmission mechanism in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the crankshaft assembly in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the eccentric sleeve in an embodiment of the present invention;

[0031] in:

[0032] 1. Fuselage component 1-1, partition;

[0033] 2. Sliding block;

[0034] 3. Drive mechanism; 3-1. Drive motor; 3-2. Gear shaft; 3-3. Drive gear;

[0035] 4. Crankshaft assembly 4-1, shoulder 4-2, crankshaft component 4-3, first support shaft 4-4, second support shaft

[0036] 5. Guide post;

[0037] 6. Eccentric sleeve; 6-1. Support hole; 6-2. Assembly process hole; 6-3. Balance block;

[0038] 7. Transmission gears;

[0039] 8. Guide sleeve;

[0040] 9. Bearings;

[0041] 10. Limiting components. Detailed Implementation

[0042] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0043] See Figures 1 to 3 The diagram below is a structural schematic of an embodiment of the present invention. It provides a compact press, including a body component 1, a slider body 2, a drive mechanism 3, and a transmission mechanism. The transmission mechanism connects the drive mechanism 3 and the slider body 2, and the drive mechanism drives the slider body 2 to move up and down relative to the body component 1.

[0044] Typically, the transmission mechanism includes *a* crankshafts, where *a* = 1 or 2, and *a* × *n* = the number of machine tool points. Each crankshaft includes *n* crankshaft assemblies. Correspondingly, the transmission mechanism also includes *n+1* eccentric sleeves 6 rotatably mounted on the machine body component 1 and *n* guide posts 5 slidably disposed on the machine body component 1, where *n* ≥ 1. This embodiment shows the case where *a* = 1 and *n* = 3, meaning the crankshaft has three crankshaft assemblies 4. In other embodiments, the number of crankshaft assemblies can be set as needed; this invention does not impose any limitations.

[0045] like Figure 4 As shown, the crankshaft assembly 4 includes two opposing shoulders 4-1 and a crankshaft component 4-2 fixed on the two shoulders 4-1. The two shoulders 4-1 are rotatably supported on eccentric sleeves 6 on both sides via a support shaft assembly. One end of the guide post 5 is rotatably connected to the crankshaft component 4-2, and the other end is fixedly connected to the slider body 2. The radius of the eccentric sleeve 6 is larger than the radius of rotation e1 of the crankshaft component 4-2, and the radius of rotation e1 of the crankshaft component 4-2 is larger than the distance e2 between the axes of the crankshaft component 4-2 and the support shaft assembly. The value of e2 / e1 is between 0.77 and 0.92. Through the transmission and engagement structure between the crankshaft component 4-2 and the eccentric sleeve 6, a high connecting rod ratio transmission can be achieved to improve the pressure holding capacity of the press.

[0046] To facilitate the installation of crankshaft assembly 4, the machine body component 1 is divided into n working sections by n+1 partitions 1-1. In this example, four partitions 1-1 are used, forming three working sections. Each crankshaft assembly 4 is arranged in its corresponding working section, and each eccentric sleeve 6 is rotatably supported on its corresponding partition 1-1. The eccentric sleeve 6 is supported on the partition 1-1 by bearings 9, and the axial ends of the bearings 9 are respectively limited by limiting members 10. Two spaced-apart shaft holes 4-1a are provided on the shaft shoulder 4-1 for the crankshaft assembly 4-2 and the support shaft assembly to pass through and be fixed.

[0047] like Figure 5 As shown, a support hole 6-1 for the support shaft assembly to pass through is provided at the eccentric position of the eccentric sleeve 6, and an assembly process hole 6-2 is provided at the center position of the eccentric sleeve 6 to facilitate the installation of the crankshaft assembly 4. In other embodiments, an assembly process hole can also be provided on the body component 1 to facilitate the installation of the transmission mechanism.

[0048] In order to facilitate the balance of the centrifugal force caused by the floating of crankshaft component 4-2 during operation, a balance block 6-3 is provided on the eccentric sleeve 6. The balance block 6-3 and the support hole 6-1 are respectively arranged on the radial sides of the eccentric sleeve 6.

[0049] The support shaft assembly includes a first support shaft 4-3 fixed between two adjacent crankshaft assemblies 4 and a second support shaft 4-4 fixed on the outer crankshaft assembly 4. The first support shaft 4-3 and the second support shaft 4-4 are rotatably disposed in the support hole 6-1 of the corresponding eccentric sleeve 6.

[0050] In order to facilitate the rotation of the eccentric sleeve 6, the transmission mechanism also includes a transmission gear 7, which is fixed on the eccentric sleeve 6 located on the outer side.

[0051] The drive mechanism 3 includes a drive component, a gear shaft 3-2 that is connected to the drive component, and a drive gear 3-3 mounted on the gear shaft 3-2. The drive gear 3-3 meshes with the transmission gear 7. In this example, the drive component includes two drive motors 3-1 arranged opposite to each other. The gear shaft 3-2 is located between the two drive motors 3-1 and is driven by the two drive motors 3-1.

[0052] To improve the compactness of the structure, a transmission interval is provided between the outer partition 1-1 and the fuselage component 1, and the transmission gear 7 and the drive gear 3-2 are located in the transmission interval.

[0053] To improve the stability of the guide post 5, a guide sleeve 8 is provided on the body component 1, and the guide post 5 is slidably disposed in the guide sleeve 8.

[0054] The working principle of the above-mentioned press is as follows:

[0055] Two drive motors 3-1 drive the gear shaft 3-2 to rotate, the gear shaft 3-2 drives the drive gear 3-3 to rotate, the drive gear 3-3 further drives the transmission gear 7 to rotate, thereby driving the eccentric sleeves 6 on both sides to rotate, thereby driving multiple crankshaft components 4-2 to rotate, and then driving the guide post 5 to perform reciprocating linear motion, realizing the up and down movement of the slider 2, and completing the stamping process.

[0056] In summary, the transmission mechanism of this press has a high linkage ratio, which can improve the pressure holding capacity and realize multi-point stamping.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A compact press, characterized in that, include: fuselage components; A slider body, which is disposed within the body component; A drive mechanism is connected to the slider body to drive the slider body to move up and down relative to the body component; A transmission mechanism, which is disposed within the body component and is used to connect the drive mechanism and the slider body, includes n crankshaft assemblies, n+1 eccentric sleeves rotatably mounted on the body component, and n guide posts slidably disposed on the body component, wherein n≥1; The crankshaft assembly includes two opposing shoulders and a crankshaft component fixed on the two shoulders. The two shoulders are rotatably supported on eccentric sleeves on both sides via a support shaft assembly. The support shaft assembly includes a first support shaft disposed between two adjacent crankshaft assemblies and a second support shaft disposed on the outer crankshaft assembly. One end of the guide post is rotatably connected to the crankshaft component and the other end is fixedly connected to the slider body. The radius of the eccentric sleeve is larger than the rotation radius of the crankshaft component. The fuselage components are divided into n working sections by n+1 partitions, each crankshaft assembly is arranged in the corresponding working section, and each eccentric sleeve is rotatably supported on the corresponding partition.

2. The compact press according to claim 1, characterized in that: The eccentric sleeve has a support hole at its eccentric position for the support shaft assembly to pass through, and the eccentric sleeve or the body component has an assembly process hole at its center.

3. The compact press according to claim 2, characterized in that: The eccentric sleeve is provided with a balance block, and the balance block and the support hole are arranged on the radial sides of the eccentric sleeve.

4. The compact press according to claim 2, characterized in that: The first support shaft / second support shaft is disposed within the support hole.

5. The compact press according to claim 1, characterized in that: The transmission mechanism also includes a transmission gear, which is fixed on the eccentric sleeve located on the outer side.

6. The compact press according to claim 5, characterized in that: The driving mechanism includes a driving component, a gear shaft that is pulsatorically connected to the driving component, and a driving gear disposed on the gear shaft, wherein the driving gear meshes with the transmission gear.

7. The compact press according to claim 6, characterized in that: The drive component includes two drive motors arranged opposite each other, and the gear shaft is disposed between the two drive motors.

8. The compact press according to claim 6, characterized in that: A transmission section is provided between the outer partition and the body component, and the transmission gear and drive gear are arranged in the transmission section.

9. The compact press according to claim 1, characterized in that: The fuselage component is provided with a guide sleeve, and the guide post is slidably disposed within the guide sleeve.

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