CN111308138A - Reciprocating drive device - Google Patents

Abstract

The application discloses reciprocating drive device includes: a frame; the first driving element and the second driving element are respectively arranged on the frame and are arranged at intervals; the movable rod is positioned between the first driving element and the second driving element, the first driving element and the second driving element are matched with the movable rod, and the movable rod can reciprocate under the driving of the first driving element and the second driving element. The first driving element and the second driving element are matched with each other and can move up and down at high frequency, specifically, one driving element provides an upward movement, the other driving element provides a downward movement, and therefore the movable rod can move back and forth. In addition, because the pressure spring is omitted, the mechanical fatigue problem of the pressure spring can be avoided, and the stability of the whole mechanism is better.

Description

Reciprocating drive

technical field

The invention relates to the field of resistance measuring equipment, in particular to a reciprocating driving device and a chip resistance testing packaging machine.

Background technique

The resistance value measurement in the chip resistance testing packaging machine (referred to as the packaging machine for short) is to measure the resistance through a set of probes moving up and down at high frequency to contact the two poles of the resistance. The driving of the probe group is achieved by the cooperation of the driving member 1 and a compression spring 2 to achieve high-frequency up-and-down reciprocating motion. The driving member drives the probe 3 to contact the two poles of the resistance upward, and the compression spring realizes the downward reset action of the probe. As shown in the schematic diagram of Figure 1.

The main drawbacks of the above structure are:

(1) After a long period of high-frequency movement, the compression spring will affect the stability of the entire mechanism due to mechanical fatigue;

(2) The frequency of the high-frequency motion of the reciprocating drive device is limited by the compression spring, and the frequency of the entire drive mechanism cannot be further increased.

(3) Due to the spatial arrangement, the upward driving force of the driving member and the downward restoring force of the compression spring are not in a straight line, which will affect the stability of the entire mechanism.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention overcomes at least one defect of the prior art, and proposes a reciprocating drive device.

The technical scheme adopted by the present invention is as follows:

A reciprocating drive device, comprising:

frame;

The first driving element and the second driving element are respectively installed on the frame, and the first driving element and the second driving element are arranged at intervals;

The movable rod is located between the first driving element and the second driving element, the first driving element and the second driving element are both matched with the movable rod, and under the driving of the first driving element and the second driving element, the movable rod can Reciprocating activity.

The first driving element and the second driving element cooperate with each other and can move up and down at high frequency. Specifically, one of the driving elements provides an upward motion, and the other driving element provides a downward motion, so that the movable rod can be moved back and forth, and the two driving elements can move back and forth. The function of a driving element solves the barrier that a higher level of high-frequency motion cannot be achieved due to the compression spring. In addition, because the compression spring is omitted, the mechanical fatigue problem of the compression spring is not limited, and the stability of the whole mechanism is better.

In the reciprocating drive device of the present application, the movable rod can reciprocate reliably, and can be used in many fields, such as measuring equipment or testing equipment.

In one embodiment of the present invention, the first driving element and the second driving element are both cylinders, electromagnets or other power bodies.

In one embodiment of the present invention, the movable shaft of the first driving element is connected with the movable rod, and the movable shaft of the second driving element is connected with the movable rod.

When the driving element is a cylinder, the movable shaft is the piston rod of the cylinder, and when the driving element is an electromagnet, the movable shaft is the iron rod of the electromagnet.

In one embodiment of the present invention, both the first driving element and the second driving element include a motor and a cam driven by the motor, and the cam is matched with the movable rod.

In one embodiment of the present invention, one end of the movable rod is rotatably or slidably mounted on the frame.

In one embodiment of the present invention, the frame includes two oppositely arranged mounting portions and a connecting portion connecting the two mounting portions, and the first driving element and the second driving element are respectively mounted on the corresponding mounting portions. On the part, one end of the movable rod rotates or slides with the connecting part. The rack is set in this way, and the structure is relatively compact.

The beneficial effect of the present invention is that the first driving element and the second driving element cooperate with each other and can move up and down at high frequency. Specifically, one of the driving elements provides upward motion, and the other driving element provides downward motion, so that the The movable rod moves back and forth, and through the action of two driving elements, it solves the barrier that the compression spring cannot achieve higher-level high-frequency motion. In addition, because the compression spring is omitted, the mechanical fatigue problem of the compression spring is not limited, and the stability of the whole mechanism is better.

Description of drawings:

Fig. 1 is the schematic diagram of the existing reciprocating drive device;

FIG. 2 is a schematic diagram of the reciprocating drive device of the present application.

The reference numbers in the figure are:

1. Driving part; 2. Compression spring; 3. Probe; 4. Frame; 5. The first driving element; 6. The second driving element; 7. The movable rod; 8. The movable shaft; 9. The guide block; 10. Ceramic seat; 11. Probing end; 12. Probe mounting plate; 13. Mounting part; 14. Connecting part.

Detailed ways:

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figure 2, a reciprocating drive device includes:

rack 4;

The first driving element 5 and the second driving element 6 are respectively mounted on the frame 4, and the first driving element 5 and the second driving element 6 are arranged at intervals;

The movable rod 7 is located between the first driving element 5 and the second driving element 6, and both the first driving element 5 and the second driving element 6 cooperate with the movable rod 7, and are located between the first driving element 5 and the second driving element 6. Driven, the movable rod 7 can reciprocate.

The first driving element 5 and the second driving element 6 cooperate with each other and can move up and down at high frequency. Specifically, one of the driving elements provides an upward motion, and the other driving element provides a downward motion, thereby enabling the movable rod 7 to move back and forth. , through the action of the two driving elements, the barrier that the compression spring cannot achieve higher-level high-frequency motion is solved. In addition, because the compression spring is omitted, the mechanical fatigue problem of the compression spring is not limited, and the stability of the whole mechanism is better.

In this embodiment, the first driving element 5 and the second driving element 6 are both electromagnets.

Preferably, the axis of the first drive element 5 and the axis of the second drive element 6 coincide. In the existing structure, due to the spatial arrangement, the upward driving force and the downward restoring force of the compression spring are not in a straight line, which will affect the stability of the entire mechanism. The axis of the first driving element 5 and the second driving element 6 of the present application The axes of the motor are coincident, so that the driving force and the restoring force are in a straight line when the high frequency moves up and down, so that a stable high frequency up and down movement can be achieved.

In this embodiment, the movable shaft 8 of the first driving element 5 is connected with the movable rod 7 , and the movable shaft 8 of the second driving element 6 is connected with the movable rod 7 .

In practice, the first driving element and the second driving element may also be cylinders or other power bodies. When the driving element is a cylinder, the movable shaft 8 is the piston rod of the cylinder, and when the driving element is an electromagnet, the movable shaft 8 is the iron rod of the electromagnet. In other embodiments, the driving element may be other power bodies. For example, the first driving element 5 and the second driving element 6 each include a motor and a cam driven by the motor, and the cam is matched with the movable rod 7 .

In this embodiment, one end of the movable rod 7 is rotatably or slidably mounted on the frame 4 . The frame 4 includes two mounting portions 13 disposed opposite to each other and a connecting portion 14 connecting the two mounting portions 13. The first driving element 5 and the second driving element 6 are respectively mounted on the corresponding mounting portions 13. One end of the movable rod 7 It is rotated or slidably fitted with the connecting portion 14 . The rack 4 is arranged in this way, and the structure is relatively compact.

The reciprocating driving device of this embodiment can realize reliable and stable movement of the movable rod, and can be used in many fields, such as being used as a probe driving structure. As shown in FIG. 2 , at this time, the movable rod 7 is fixed with a probe mounting plate 12 , the probe mounting plate 12 is used to install the probe 3, so that the probe 3 can reciprocate through the action of the first driving element and the second driving element. In addition, in order to make the position of the probe more reliable when moving, the guide block 9 can be fixed on the frame 4, the ceramic base 10 is fixed on the frame 4, and the detection end 11 of the probe 3 passes through the guide block 9 and then passes through the ceramic base 10. The guide block 9 can play a guiding role to ensure the reliability of the position of the probe 3 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and accompanying drawings of the present invention can be directly or indirectly used in other related technical fields. All are similarly included in the protection scope of the present invention.

Claims (6)

1. A reciprocating drive apparatus, comprising:

a frame;

the first driving element and the second driving element are respectively arranged on the frame and are arranged at intervals;

the movable rod is positioned between the first driving element and the second driving element, the first driving element and the second driving element are matched with the movable rod, and the movable rod can reciprocate under the driving of the first driving element and the second driving element.

2. The reciprocating drive apparatus of claim 1, wherein the first drive element and the second drive element are both pneumatic cylinders or electromagnets.

3. The reciprocating drive apparatus as defined in claim 2, wherein the movable shaft of the first drive element is connected to the movable rod and the movable shaft of the second drive element is connected to the movable rod.

4. The reciprocating drive apparatus as defined in claim 1, wherein the first and second drive elements each include a motor and a cam driven by the motor, the cam engaging the movable bar.

5. The reciprocating drive apparatus as defined in claim 1, wherein one end of said movable bar is rotatably or slidably mounted on the frame.

6. The reciprocating drive apparatus as defined in claim 5, wherein the frame includes two oppositely disposed mounting portions and a connecting portion connecting the two mounting portions, the first driving member and the second driving member are respectively mounted on the corresponding mounting portions, and one end of the movable rod is rotatably or slidably engaged with the connecting portion.

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