Servo motor driven male die ejection mechanism

Abstract

The utility model relates to a male die ejection mechanism driven by a servo motor, which comprises a sliding table and a swing fork seat arranged on the sliding table, and further comprises a swing fork, a push rod and a push rod, the power output end of the servo motor is in transmission connection with the swing fork through a swing fork shaft; and the servo motor controls the circumferential reciprocating motion of the swing fork so as to drive the other free end of the swing fork to do reciprocating ejection motion. According to the male die ejection mechanism driven by the servo motor, the servo motor is adopted for direct driving, and multi-shaft mechanical transmission complex structures such as a driving rocker arm, a rocker arm shaft, a connecting rod and a cam sliding block are avoided; the closed-loop control of the servo motor improves the ejection position and the repeated precision, and the ejection force and the ejection frequency can be flexibly adjusted; and after a mechanical transmission part is omitted, the internal layout is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing auxiliary devices, in particular to a servo motor driven male mold ejection mechanism. Background Art

[0002] In the prior art, during the casting production process, an ejection mechanism is required to eject the obtained casting from the fixed male mold to obtain a molded casting product. Figure 1 As shown, the traditional male mold ejection mechanism mainly adopts mechanical transmission. The typical method is to use an active rocker arm to drive a connecting rod mechanism, which drives the male mold to perform linear reciprocating motion to achieve ejection through the transmission of the rocker arm shaft and the cam slider.

[0003] This traditional mechanical transmission method has the following disadvantages:

[0004] 1) The structure is complex, including multiple shafts and connecting rods and other vulnerable parts, and the manufacturing and maintenance costs are high;

[0005] 2) Imprecise motion control, relying on the accumulated tolerance of mechanical motion, and insufficient control over the ejection process;

[0006] 3) The freedom of movement and flexibility are limited, which makes it inconvenient to realize the ejection process of different frequencies and forces. Summary of the invention

[0007] In order to solve the above problems, the utility model provides a servo motor driven male mold ejection mechanism with simple structure, low manufacturing and maintenance costs, precise motion control, strong motion flexibility and high space utilization rate inside the machine.

[0008] In order to achieve the above-mentioned purpose, the servo motor driven male mold ejection mechanism designed in the utility model includes a slide and a swing fork seat arranged on the slide, and also includes:

[0009] A swing fork, one end of which is rotatably connected to the swing fork seat via a swing fork shaft;

[0010] A servo motor, whose power output end is transmission-connected to the swing fork via a swing fork shaft;

[0011] Wherein, the servo motor controls the circular reciprocating motion of the swing fork to drive the other free end of the swing fork to perform reciprocating ejection motion.

[0012] In order to improve transmission accuracy and stability, a coupling is also included. The coupling is arranged between the power output end of the servo motor and the swing fork shaft to achieve coaxial connection between the two.

[0013] In order to simplify the structure, the swing fork is fixedly connected to the swing fork shaft, and the swing fork can move synchronously with the swing fork shaft; the servo motor is precisely controlled by PLC to make the circular reciprocating motion of the swing fork shaft.

[0014] In order to facilitate installation and maintenance, the swing fork seat is fixed on the slide platform by bolts.

[0015] The servo motor driven male mold ejection mechanism designed in the utility model directly drives the swing fork movement through the servo motor to drive the male mold to be ejected accurately, and has the advantages and beneficial effects of simple structure, low manufacturing and maintenance costs, precise motion control, strong motion flexibility, and high space utilization rate in the machine. Specifically, this scheme adopts direct drive by a servo motor, avoiding the complex structure of multi-axis mechanical transmission such as active rocker arm, rocker arm shaft, connecting rod, cam slider, etc.; the closed-loop control of the servo motor improves the ejection position and repeatability, and can flexibly adjust the ejection force and frequency; the layout in the machine is optimized after eliminating the mechanical transmission parts. In summary, this scheme has a simple structure, precise control, flexible movement, and high space utilization, which is a significant improvement over the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a male mold ejection mechanism in the prior art;

[0017] Figure 2 is a schematic diagram of the planar structure of Example 1;

[0018] Figure 3 It is a schematic diagram of the horizontal cross-sectional structure of Example 1.

[0019] Among them: slide 1, swing fork seat 2, swing fork 3, swing fork shaft 4, servo motor 5, coupling 6, crankshaft connecting rod 7. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example 1.

[0022] like Figure 2 and Figure 3 As shown, the servo motor driven male mold ejection mechanism described in this embodiment includes a slide 1 and a swing fork seat 2 arranged on the slide 1, and also includes:

[0023] A swing fork 3, one end of which is rotatably connected to the swing fork seat 2 via a swing fork shaft 4;

[0024] A servo motor 5, whose power output end is transmission-connected to the swing fork 3 via a swing fork shaft 4;

[0025] The servo motor 5 controls the circular reciprocating motion of the swing fork 3 to drive the other free end of the swing fork 3 to perform a reciprocating ejecting motion.

[0026] When implementing it, Figure 2 As shown, the servo motor 5 adopts Huichuan MSE series servo motor, the large end of the crankshaft connecting rod 7 is connected to the power crankshaft of the cold heading machine (not shown in the figure), and the small end of the crankshaft connecting rod 7 is connected to the slide 1 through the transmission shaft to drive the slide 1 to reciprocate to meet its normal working requirements.

[0027] During operation, the servo motor 5 drives the swing fork shaft 4 and the swing fork 3 to rotate, so that the free end of the swing fork 3 performs circular reciprocating motion according to the set trajectory, and drives the male mold connected thereto to perform reciprocating ejection motion. In this embodiment, by adjusting the speed and forward and reverse rotation of the servo motor 5, the frequency, force and position of ejection can be accurately controlled to achieve precise control of the ejection process. Compared with the traditional male mold ejection mechanism using mechanical transmission, this embodiment uses a servo motor to directly drive, which is not only simple in structure and precise in control, but also can realize different ejection process requirements through the programming of the PLC controller of the servo motor 5, meet the molding requirements of different parts, and greatly enhance the applicability and flexibility of the mechanism.

[0028] In this embodiment, if Figure 3 As shown, in order to improve the transmission accuracy and stability, a coupling 6 is also included, and the coupling 6 is arranged between the power output end of the servo motor 5 and the swing fork shaft 4 to achieve coaxial connection between the two. In this embodiment, the use of the coupling 6 automatically compensates for installation errors and axial misalignment, ensures that the servo motor 5 and the swing fork shaft 4 maintain good coaxiality, improves transmission accuracy and stability, and compared with direct rigid connection, the setting of the coupling 6 can absorb the vibration and impact of the servo motor 5, avoid direct transmission to the mechanism system, can effectively suppress the generation of vibration and noise, improve the working reliability and service life of the drive system, and make the entire ejection system run more smoothly.

[0029] In this embodiment, if Figure 2 As shown, in order to simplify the structure, the swing fork 3 is fixedly connected to the swing fork shaft 4, and the swing fork 3 can move synchronously with the swing fork shaft 4; the servo motor 5 is precisely controlled by the PLC to cause the circular reciprocating motion of the swing fork shaft 4. With this structural design, the swing fork 3 is directly fixed to the swing fork shaft 4, eliminating the need for additional connection mechanisms such as connecting pins, simplifying the structure, and at the same time, the two are fixed as one, avoiding the failure caused by relative displacement, and the servo motor 5 is controlled by the PLC (not shown in the figure). The control signal of the controller can precisely control the parameters such as the rotation angle, rotation speed, acceleration, etc. of the swing fork 3, improve the accuracy of the movement, and freely set the movement trajectory, frequency, amplitude, etc. of the swing fork 3 to meet different process requirements. This replaces mechanical transmissions such as cams and connecting rod mechanisms, which is conducive to simplifying the structure and reducing failure points.

[0030] In this embodiment, if Figure 2As shown, for ease of installation and maintenance, the swing fork seat 2 is fixedly arranged on the slide 1 by bolts. In this embodiment, the bolt connection method can provide sufficient connection strength to avoid loosening during operation, and the standard bolt assembly is easy to obtain, no special processing is required, and the installation efficiency is high.

[0031] The servo motor driven male mold ejection mechanism provided in this embodiment directly drives the swing fork movement through the servo motor to drive the male mold to be ejected accurately, and has the advantages and beneficial effects of simple structure, low manufacturing and maintenance costs, precise motion control, strong motion flexibility, and high space utilization rate in the machine. Specifically, this solution adopts direct drive by a servo motor, avoiding the complex structure of multi-axis mechanical transmission such as active rocker arm, rocker arm shaft, connecting rod, cam slider, etc.; the closed-loop control of the servo motor improves the ejection position and repeatability, and can flexibly adjust the ejection force and frequency; the layout in the machine is optimized after eliminating the mechanical transmission parts. In summary, this solution has a simple structure, precise control, flexible movement, and high space utilization, which is a significant improvement over the existing technology.

[0032] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A servo motor driven male mold ejection mechanism, comprising a slide table (1) and a swing fork seat (2) arranged on the slide table (1), characterized in that: Also includes: A swing fork (3), one end of which is rotatably connected to the swing fork seat (2) via a swing fork shaft (4); A servo motor (5), the power output end of which is transmission-connected to the swing fork (3) via a swing fork shaft (4); The servo motor (5) controls the circular reciprocating motion of the swing fork (3) to drive the other free end of the swing fork (3) to perform reciprocating ejection motion; the swing fork (3) is fixedly connected to the swing fork shaft (4), and the swing fork (3) can move synchronously with the swing fork shaft (4); the servo motor (5) is precisely controlled by a PLC to perform the circular reciprocating motion of the swing fork shaft (4).

2. The servo motor driven male mold ejection mechanism according to claim 1, characterized in that: It also includes a coupling (6), wherein the coupling (6) is arranged between the power output end of the servo motor (5) and the swing fork shaft (4) to achieve a coaxial connection between the two.

3. The servo motor driven male mold ejection mechanism according to claim 1, characterized in that: The swing fork seat (2) is fixed on the slide table (1) by means of bolts.

Images