Toggle rod driving mechanism of press machine
By using the transmission gear rack and rack mechanism driven by servo motor and reduction components in the toggle type press, the problem of poor dead point accuracy and stability under the slide is solved, and the flexibility of high-precision and stable drive and slide stroke is achieved. Improve product processing quality and equipment diversity.
Patent Information
- Application Number
- CN202323552124.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The existing toggle press has a large acceleration of the slider when the upper and lower dead points are at the upper and lower dead points, causing the connecting rod copper sleeve to collide with each other to produce strange sounds, the dead points under the slider are poor, and the slider stroke is It cannot be changed, affecting the quality of product processing and equipment utilization.
Using a toggle-lever driving mechanism including servo motor, reduction components, transmission gear and rack, the slider is driven by one-way movement of the transmission gear and rack to complete up and down movement, ensuring clearance-free driving, and combining with the servo motor to control the slider position to achieve Wuji adjustment.
It improves the accuracy and stability of the dead point under the slider, improves the product processing quality and equipment utilization, and realizes the processing ability of different categories of products.
Smart Images
Figure CN222271375U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a press, in particular to a toggle lever driving mechanism of the press. Background Art
[0002] Many existing elbow-type presses use a crank-connecting rod mechanism to drive the elbow mechanism, and then the elbow mechanism drives the slider to move up and down through the guide column. The acceleration of the slider of this elbow-type press is large at the upper and lower dead points. Due to the gap between the connecting rod copper sleeve and the crankshaft, they collide with each other, resulting in abnormal noise, and the accuracy and stability of the slider's lower dead point are poor, affecting the product processing quality. In addition, the slider stroke of this elbow-type press cannot be changed, and different types of products cannot be processed, resulting in poor equipment utilization. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a toggle lever driving mechanism of a press machine, which can ensure the accuracy and stability of the lower dead point of the slider, improve the product processing quality, and realize the processing of different categories of products, thereby improving the utilization of the equipment.
[0004] The technical solution adopted by the utility model to solve the above technical problems is: a toggle drive mechanism of a press machine, comprising a machine body, a toggle mechanism, a transmission gear and a rack, the toggle mechanism drives a slider to move up and down through a guide column, a servo motor is fixedly arranged on the machine body, a reduction assembly is connected to the servo motor, the transmission gear is coaxially fixed with the output shaft of the reduction assembly, a guide seat is fixedly arranged on the machine body, the rack is horizontally slidably matched with the guide seat, the transmission gear is meshed with the rack, one end of the rack is hinged with the toggle mechanism, and when the transmission gear and the rack complete a unidirectional movement stroke, the toggle mechanism drives the slider to complete an up and down back and forth movement.
[0005] Furthermore, the elbow mechanism includes a first link, a second link and a third link, one end of the first link is hinged to one end of the rack, the upper end of the second link is hinged to the fuselage, the lower end of the third link is hinged to the guide column, and the other end of the first link, the lower end of the second link and the upper end of the third link are hinged.
[0006] Furthermore, the reduction assembly includes a pinion, a gear, an input shaft and an output shaft, the input shaft and the output shaft are respectively rotatably connected to the fuselage, the input shaft is coaxially fixed with the drive shaft of the servo motor, the pinion is coaxially fixed on the input shaft, the gear is coaxially fixed on the output shaft, and the pinion is meshed with the gear.
[0007] Compared with the prior art, the utility model has the following advantages: when the transmission gear and the rack complete a unidirectional motion stroke, the toggle mechanism drives the slider to complete an up and down back and forth movement, and there is no gap when the transmission gear and the rack move in one direction, so that there is no impact inside the driving mechanism of the slider during processing, ensuring the high precision and stability of the slider's bottom dead point, improving the processing quality of the product, and also improving production efficiency. In addition, the slider stroke of the press can be controlled by the rotation angle of the servo motor (i.e., changing the position of the slider's top dead point), and can be adjusted steplessly, so that different types of products can be processed, greatly improving the utilization of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a three-dimensional structural schematic diagram of the press of the utility model;
[0009] Figure 2 It is a three-dimensional structural schematic diagram of the toggle lever driving mechanism of the utility model;
[0010] Figure 3 This is a schematic diagram of the initial state of the utility model driving the slider to move downward;
[0011] Figure 4 This is a schematic diagram of the state where the slider of the utility model is at the bottom dead center;
[0012] Figure 5 It is a schematic diagram of the state that the slider of the utility model is at the top dead center. DETAILED DESCRIPTION
[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0014] As shown in the figure, a toggle drive mechanism of a press machine includes a machine body 1, a toggle mechanism, a transmission gear 2 and a rack 3. The toggle mechanism drives a slider 5 to move up and down through a guide column 4. A servo motor 6 is fixedly arranged on the machine body 1. A reduction assembly is connected to the servo motor 6. The reduction assembly includes a pinion 7, a large gear 8, an input shaft 9 and an output shaft 10. The input shaft 9 and the output shaft 10 are respectively connected to the machine body 1 for rotation. The input shaft 9 is coaxially fixed with the driving shaft of the servo motor 6. The pinion 7 is coaxially fixed on the input shaft 9. The large gear 8 is coaxially fixed on the output shaft 10. The pinion 7 is meshed with the large gear 8. The transmission gear 2 is meshed with the output shaft 1 0 is coaxially fixed, a guide seat 11 is fixedly arranged on the fuselage 1, the rack 3 is horizontally slidably matched with the guide seat 11, the transmission gear 2 is meshed with the rack 3, the toggle mechanism includes a first link 12, a second link 13 and a third link 14, one end of the first link 12 is hinged to one end of the rack 3, the upper end of the second link 13 is hinged to the fuselage 1, the lower end of the third link 14 is hinged to the guide column 4, the other end of the first link 12, the lower end of the second link 13 and the upper end of the third link 14 are hinged, when the transmission gear 2 and the rack 3 complete a unidirectional motion stroke, the toggle mechanism drives the slider 5 to complete an up and down back and forth movement, such as Figure 3-5 shown.
[0015] The protection scope of the present invention includes but is not limited to the above embodiments, and its protection scope is subject to the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.
Claims
1. A toggle lever drive mechanism for a press, characterized in that It includes a fuselage, a toggle mechanism, a transmission gear and a rack. The toggle mechanism drives the slider to move up and down through a guide column. A servo motor is fixedly arranged on the fuselage. A reduction assembly is connected to the servo motor. The transmission gear is coaxially fixed with the output shaft of the reduction assembly. A guide seat is fixedly arranged on the fuselage. The rack is horizontally slidably matched with the guide seat. The transmission gear is meshed with the rack. One end of the rack is hinged with the toggle mechanism. When the transmission gear and the rack complete a unidirectional movement stroke, the toggle mechanism drives the slider to complete an up and down back and forth movement.
2. A toggle lever drive mechanism for a press machine as claimed in claim 1, characterized in that: The elbow link mechanism includes a first link, a second link and a third link, one end of the first link is hinged to one end of the rack, the upper end of the second link is hinged to the fuselage, the lower end of the third link is hinged to the guide column, and the other end of the first link, the lower end of the second link and the upper end of the third link are hinged.
3. The toggle lever drive mechanism of a press machine according to claim 1, characterized in that: The reduction assembly includes a pinion, a large gear, an input shaft and an output shaft. The input shaft and the output shaft are respectively connected to the body for rotation. The input shaft is coaxially fixed with the driving shaft of the servo motor. The pinion is coaxially fixed on the input shaft. The large gear is coaxially fixed on the output shaft. The pinion is meshed with the large gear.