CN214221933U - Linear moving mechanism and lifting device - Google Patents
Linear moving mechanism and lifting device Download PDFInfo
- Publication number
- CN214221933U CN214221933U CN202022776976.1U CN202022776976U CN214221933U CN 214221933 U CN214221933 U CN 214221933U CN 202022776976 U CN202022776976 U CN 202022776976U CN 214221933 U CN214221933 U CN 214221933U
- Authority
- CN
- China
- Prior art keywords
- cam
- moving plate
- conjugate
- movement mechanism
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model belongs to the technical field of mechanical transmission, a linear moving mechanism and a lifting device are disclosed, the linear moving mechanism comprises a base body, a conjugate cam, a driving part and a movable plate, the conjugate cam is rotationally connected with the base body, the linear moving mechanism comprises a first cam part and a second cam part which are overlapped along the extension direction of a rotating shaft of the conjugate cam, the cam profile of the first cam part and the cam profile of the second cam part are arranged in a mirror image manner relative to the plane where the rotating shaft is arranged, the driving part is configured to drive the conjugate cam to rotate around the rotating shaft, the movable plate is movably arranged on the base body, a first butt joint part and a second butt joint part are arranged on the movable plate, the first butt joint part and the second butt joint part are respectively abutted against a group of conjugate surfaces of the first cam part and the second cam part, the first cam part and the second cam part can enable the movable plate to reciprocate along a linear path, wherein, the conjugate cam occupies small space, and, meanwhile, the conjugate cam directly acts on the moving plate, so that the transmission structure is simplified.
Description
Technical Field
The utility model relates to a mechanical transmission technical field especially relates to a linear moving mechanism and elevating gear.
Background
In the mechanical transmission field, when the moving member was made straight reciprocating motion, current servo drive mechanism adopted lead screw drive's mode more, but lead screw drive mechanism occupation space is big, highly too high, and overall structure shows the heaviness, is difficult for maintenance and maintenance, can't be applied to the transmission in less space, consequently, need a transmission structure urgently, it can drive the moving member in less space and be straight reciprocating motion.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a linear moving mechanism and elevating gear have simplified the transmission structure among the linear reciprocating mechanism to can drive the moving member in less space and do linear reciprocating motion.
To achieve the purpose, the utility model adopts the following technical proposal:
a linear movement mechanism, the linear movement mechanism comprising:
a substrate;
the conjugate cam is rotationally connected to the base body and comprises a rotating shaft, a first cam part and a second cam part, wherein the first cam part and the second cam part are overlapped along the extending direction of the rotating shaft;
a driving part configured to drive the conjugate cam to rotate around the rotating shaft;
and the moving plate is movably arranged on the base body, a first abutting piece and a second abutting piece are arranged on the moving plate, and the first abutting piece and the second abutting piece are respectively abutted against a group of conjugate surfaces of the first cam part and the second cam part so that the moving plate can be driven to reciprocate along a linear path when the conjugate cam rotates.
Preferably, the first contact member and the second contact member are in rolling contact with the first cam portion and the second cam portion, respectively.
Preferably, the linear moving mechanism further includes an elastic member that is in compressive contact between the first contact member and the moving plate and that is capable of being expanded or compressed in an extending direction of the linear path.
Preferably, the elastic member includes:
one end of the floating plate is hinged with the moving plate, and the first abutting piece is fixedly connected with the floating plate;
and two ends of the spring are respectively abutted against the other end of the floating plate and the moving plate.
Preferably, the first contact member is located between a hinge joint between the floating plate and the moving plate and a contact point between the floating plate and the spring.
Preferably, the linear movement mechanism further includes a detection element for detecting a position of the moving plate, and the detection element is electrically connected to the driving unit.
Preferably, the detection element includes a groove-shaped photoelectric switch and a light shielding plate that can be placed in a detection groove of the groove-shaped photoelectric switch, and the groove-shaped photoelectric switch and the light shielding plate are alternatively provided to the base body and the moving plate.
Preferably, the moving plate and the base are slidably connected by a cross roller guide.
Preferably, one end of the rotating shaft is connected with the driving part, and the other end of the rotating shaft is rotatably connected with a shaft seat fixedly connected with the base body.
The utility model also provides a lifting device, include as above-mentioned linear moving mechanism, first butt spare with the second butt spare is arranged along vertical direction, vertical direction reciprocating motion can be followed to the movable plate.
The utility model has the advantages that:
the utility model discloses in when the rotation of revolution of drive division drive conjugate cam, first butt piece and second butt piece difference butt all the time in a set of conjugate face of first cam portion and second cam portion, promptly, when drive division drive conjugate cam revolves the rotation of axes, first cam portion and second cam portion can make the movable plate follow a linear path reciprocating motion, wherein, conjugate cam occupation space is little, can be applied to the servo lift of short little space department, simultaneously because conjugate cam direct action is in the movable plate, and then simplified transmission structure.
Drawings
Fig. 1 is an isometric view of a linear movement mechanism provided in an embodiment of the present invention;
fig. 2 is a front view of a linear movement mechanism provided in an embodiment of the present invention;
fig. 3 is a left side view of the linear movement mechanism provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a conjugate cam of a linear movement mechanism provided in an embodiment of the present invention.
In the figure:
1. a substrate; 11. a shaft seat;
2. a conjugate cam; 21. a first cam portion; 22. a second cam portion; 23. a rotating shaft;
3. a drive section;
4. moving the plate;
5. a first abutting member;
6. a second abutting member;
7. an elastic member; 71. a floating plate; 72. a spring;
8. a detection element; 81. a shading sheet; 82. a groove-type photoelectric switch;
9. a cross roller guide.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
In the prior art, after the liquid crystal panel is manufactured, it needs to be detected, and when the liquid crystal panel is detected, the detection device needs to perform lifting movement in a small height space, for this reason, the present embodiment provides a linear moving mechanism, as shown in fig. 1-4, the linear moving mechanism includes a base body 1, a conjugate cam 2, a driving part 3 and a moving plate 4, the conjugate cam 2 is rotatably connected to the base body 1, the conjugate cam 2 includes a rotating shaft 23 and a first cam part 21 and a second cam part 22 overlapped along the extending direction of the rotating shaft 23, the cam profile of the first cam part 21 and the cam profile of the second cam part 22 are arranged in a mirror image relative to the plane where the rotating shaft 23 is located, the driving part 3 is configured to drive the conjugate cam 2 to rotate around the rotating shaft 23, the moving plate 4 is movably mounted on the base body 1, the moving plate 4 is provided with a first abutting piece 5 and a second abutting piece 6, the first abutting piece 5 and the second abutting piece 6 abut against a set of conjugate planes of the first cam part 21 and the second cam part 22 respectively, so that the conjugate cam 2 can drive the moving plate 4 to reciprocate along a linear path when rotating.
Compared with screw rod transmission, the moving plate 4 is driven by the conjugate cam 2 to reciprocate along a linear path in the embodiment, and the conjugate cam 2 occupies a small space, so that the servo lifting device can be applied to servo lifting in a short space. When the driving part 3 drives the conjugate cam 2 to rotate around the rotating shaft 23, the first abutting piece 5 and the second abutting piece 6 always abut against a set of conjugate surfaces of the first cam part 21 and the second cam part 22 respectively, namely, when the driving part 3 drives the conjugate cam 2 to rotate around the rotating shaft 23, the first cam part 21 and the second cam part 22 can enable the moving plate 4 to reciprocate along a linear path, in the embodiment, when the driving part 3 drives the conjugate cam 2 to rotate anticlockwise around the rotating shaft 23, the first cam part 21 can enable the moving plate 4 to move upwards, and when the driving part 3 drives the conjugate cam 2 to rotate clockwise around the rotating shaft 23, the second cam part 22 can enable the moving plate 4 to move downwards, so that the moving plate 4 can reciprocate along a vertical direction. Traditional cam drive structure is provided with connecting rod portion mostly, and it passes through cam drive connecting rod portion and then transmits linear motion, and transmission mode is complicated, and the structure is succinct inadequately, and yoke cam 2 direct action has simplified transmission structure in this embodiment movable plate 4.
Specifically, the ascending or descending motion law of the moving plate 4 depends on the cam profiles of the first cam portion 21 and the second cam portion 22, respectively, and in this embodiment, the cam profiles of the first cam portion 21 and the second cam portion 22 are arranged in a mirror image with respect to the plane where the rotating shaft 23 is located, that is, the ascending or descending motion law of the moving plate 4 is the same. Firstly, the cam profile of the first cam portion 21 is determined according to the required ascending stroke, and the cam profile of the second cam portion 22 is determined accordingly, since the first abutting piece 5 and the second abutting piece 6 are arranged in the vertical direction and are fixed in position, that is, the distance between the first abutting piece 5 and the second abutting piece 6 is fixed, and then the mirror surfaces opposite to the mirror surfaces where the cam profile of the first cam portion 21 and the cam profile of the second cam portion 22 are arranged are determined, so as to determine the relative position of the second cam portion 22 and the first cam portion 21, and further ensure that the first abutting piece 5 and the second abutting piece 6 always abut against a set of conjugate surfaces of the first cam portion 21 and the second cam portion 22 respectively when the conjugate cam 2 rotates around the rotating shaft 23.
It can be understood that when the distance between the first abutting member 5 and the second abutting member 6 is changed, the mirror surface opposite to the arrangement of the cam profile of the first cam portion 21 and the cam profile of the second cam portion 22 in a mirror image mode is changed correspondingly, that is, the relative position of the second cam portion 22 and the first cam portion 21 is changed, so as to ensure that the first abutting member 5 and the second abutting member 6 always abut on a set of conjugate surfaces of the first cam portion 21 and the second cam portion 22 respectively when the conjugate cam 2 rotates around the rotating shaft 23, therefore, the conjugate cam 2 in the present embodiment can adapt to different height spaces, that is, the conjugate cam 2 in the present embodiment can adapt to different sizes of moving plates 4.
Of course, the present embodiment can satisfy different stroke requirements by controlling the rotation angle of the conjugate cam 2.
In order to make the rotation of the conjugate cam 2 more stable and reliable, in this embodiment, one end of the rotating shaft 23 is connected to the driving portion 3, and the other end of the rotating shaft is rotatably connected to the shaft seat 11 fixed on the base 1, and the two ends of the rotating shaft 23 are both provided with supporting members, so that the rotating process of the rotating shaft 23 is more stable.
It is understood that the driving section 3 is provided as a servo motor in the present embodiment to ensure the positional accuracy of the moving plate 4.
In this embodiment, the moving plate 4 is provided with a mounting groove, the conjugate cam 2 is located in the mounting groove, a through hole is formed at the bottom of the mounting groove, and the driving portion 3 is connected with the conjugate cam 2 through the through hole, so that the structure of the linear moving mechanism is more compact.
When the conjugate cam 2 rotates around the rotating shaft 23, the first abutting piece 5 and the second abutting piece 6 abut against a set of conjugate surfaces of the first cam portion 21 and the second cam portion 22, respectively, wherein the linear moving mechanism further comprises an elastic piece 7, the elastic piece 7 is in compression abutting contact between the first abutting piece 5 and the moving plate 4, and the elastic piece 7 can stretch or compress along the extending direction of the linear path. Since the first cam portion 21 and the second cam portion 22 inevitably have machining errors, the elastic member 7 in this embodiment can be elastically deformed when the first abutting member 5 abuts against the first cam portion 21, so that the first abutting member 5 has floating displacement in a plane parallel to the rotating shaft 23, and the conjugate cam 2 is prevented from being jammed between the first abutting member 5 and the second abutting member 6 when rotating.
Preferably, the elastic member 7 includes a floating plate 71 and a spring 72, one end of the floating plate 71 is hinged to the moving plate 4, the first abutting member 5 is fixedly connected to the floating plate 71, two ends of the spring 72 respectively abut against the other end of the floating plate 71 and the moving plate 4, and the second abutting member 6 is fixedly connected to the moving plate 4. The floating plate 71 is attached to one side of the moving plate 4 so that the floating plate 71 can rotate about the hinge shaft when the conjugate cam 2 rotates, and the first contact member 5 is in floating contact with the first cam portion 21.
In the present embodiment, the first abutting member 5 and the spring 72 are located on both sides of the floating plate 71, and the spring 72 is configured as a compression spring, so that after the first abutting member 5 is separated from the machining error on the first cam portion 21, the first abutting member 5 is restored to the initial position to avoid affecting the subsequent operation of the linear moving mechanism, and in other alternative embodiments, the first abutting member 5 and the spring 72 are located on the same side of the floating plate 71, and the spring 72 is configured as a tension spring.
Of course, in other alternative embodiments, the elastic element 7 can also be arranged between the second abutment 6 and the moving plate 4, fixing the first abutment 5 on the moving plate 4.
In order to allow the floating plate 71 to rotate about the hinge axis, the first abutting member 5 is located between the hinge point of the floating plate 71 and the moving plate 4 and the abutting point of the floating plate 71 and the spring 72, and the first abutting member 5 is fixedly connected to the middle of the floating plate 71 as shown in fig. 2.
Preferably, the first abutment 5 and the second abutment 6 are in rolling abutment with the first cam portion 21 and the second cam portion 22, respectively. The rolling abutment can reduce the friction between the first and second abutments 5 and 6 and the first and second cam portions 21 and 22, reduce the wear, and increase the service life of the first and second cam portions 21 and 22. The first abutting part 5 and the second abutting part 6 are both provided as bearings, and the bearings are connected with the moving plate 4 through a pin shaft, but the first abutting part 5 and the second abutting part 6 may also be provided as other members such as a roller.
In order to ensure that the operation of the linear moving mechanism is more stable and reliable, in this embodiment, the linear moving mechanism preferably further includes a detection element 8 for detecting the position of the moving plate 4, and the detection element 8 is electrically connected to the driving portion 3, it can be understood that the detection element 8 is disposed at the head and tail ends of the linear path, and when the detection element 8 detects that the moving plate 4 reaches the specified position, the driving portion 3 can be controlled to stop driving, so as to perform subsequent operations.
Preferably, the detecting element 8 includes a groove-type photoelectric switch 82 and a light shielding sheet 81 that can be put into a detecting groove of the groove-type photoelectric switch 82, and the groove-type photoelectric switch 82 and the light shielding sheet 81 are alternatively provided to the base 1 and the moving plate 4. When the light-shielding sheet 81 is arranged on the moving plate 4 and the groove-shaped photoelectric switch 82 is arranged on the base 1, the light-shielding sheet 81 can move along with the moving plate 4, and when the light-shielding sheet 81 is inserted into the detection groove, the groove-shaped photoelectric switch 82 can detect the position of the light-shielding sheet 81 to obtain the position of the moving plate 4; when the light-shielding plate 81 is disposed on the base 1 and the groove-type photoelectric switch 82 is disposed on the moving plate 4, the groove-type photoelectric switch 82 can move along with the moving plate 4, and when the light-shielding plate 81 is inserted into the detection groove, the groove-type photoelectric switch 82 can determine the position of the moving plate 4 by detecting the position of the light-shielding plate 81, so as to monitor the operation condition of the linear movement mechanism.
In order to realize high-precision and stable linear motion, the moving plate 4 and the base body 1 are in sliding connection through a crossed roller guide rail 9 in the embodiment.
It can be understood that, base member 1 still is provided with first stopper and second stopper in this embodiment, and first stopper and second stopper are located the both ends in linear path respectively, and when debugging linear movement mechanism, first stopper and second stopper can limit the distance that moving plate 4 along linear path reciprocating motion, and at linear movement mechanism operation in-process simultaneously, can cause the moving plate 4 out of control because of other reasons such as drive division 3 trouble, first stopper and second stopper can limit the displacement of moving plate 4 out of control.
In order to detect liquid crystal display panel, the utility model also provides a lifting device, include as above-mentioned linear moving mechanism, first butt piece 5 and second butt piece 6 are arranged along vertical direction, and vertical direction reciprocating motion can be followed to movable plate 4, and the lift still includes liquid crystal display panel detection mechanism, and linear moving mechanism can drive liquid crystal display panel detection mechanism and reciprocate.
It is understood that in other alternative embodiments, the linear moving mechanism may be used to transmit linear motion in a horizontal plane, and is not limited in particular.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A linear moving mechanism, characterized by comprising:
a base body (1);
the conjugate cam (2) is rotationally connected to the base body (1), the conjugate cam (2) comprises a rotating shaft (23) and a first cam part (21) and a second cam part (22) which are overlapped along the extending direction of the rotating shaft (23), and the cam profile of the first cam part (21) and the cam profile of the second cam part (22) are arranged in a mirror image mode relative to the plane where the rotating shaft (23) is located;
a drive section (3) configured to drive the conjugate cam (2) to rotate about the rotation shaft (23);
the moving plate (4) is movably mounted on the base body (1), a first abutting piece (5) and a second abutting piece (6) are arranged on the moving plate (4), the first abutting piece (5) and the second abutting piece (6) abut against a group of conjugate surfaces of the first cam portion (21) and the second cam portion (22) respectively, and therefore the moving plate (4) can be driven to reciprocate along a linear path when the conjugate cam (2) rotates.
2. The linear movement mechanism according to claim 1, characterized in that the first abutment member (5) and the second abutment member (6) are in rolling abutment with the first cam portion (21) and the second cam portion (22), respectively.
3. The linear movement mechanism according to claim 1, characterized in that it further comprises an elastic member (7), said elastic member (7) being in compressive abutment between said first abutment member (5) and said moving plate (4), and said elastic member (7) being capable of stretching or compressing along the extension of said linear path.
4. The linear movement mechanism according to claim 3, wherein the elastic member (7) comprises:
the first abutting piece (5) is fixedly connected with the floating plate (71);
and a spring (72), wherein two ends of the spring (72) are respectively abutted against the other end of the floating plate (71) and the moving plate (4).
5. The linear movement mechanism according to claim 4, characterized in that the first abutment (5) is located between the articulation of the floating plate (71) with the moving plate (4) and the abutment of the floating plate (71) and the spring (72).
6. The linear movement mechanism according to claim 1, further comprising a detection element (8) for detecting a position of the moving plate (4), the detection element (8) being electrically connected to the driving portion (3).
7. The linear movement mechanism according to claim 6, wherein the detection element (8) comprises a groove-shaped photoelectric switch (82) and a light shielding plate (81) which can be put into a detection groove of the groove-shaped photoelectric switch (82), and the groove-shaped photoelectric switch (82) and the light shielding plate (81) are alternatively provided to the base body (1) and the moving plate (4).
8. Linear movement mechanism according to claim 1, characterized in that the moving plate (4) is slidingly connected to the base body (1) by means of crossed roller guides (9).
9. Linear movement mechanism according to claim 1, characterized in that the rotation shaft (23) is connected with one end to the drive part (3) and with the other end to a shaft seat (11) fixedly connected to the base body (1) in a rotating manner.
10. A lifting device, characterized in that it comprises a linear movement mechanism according to any one of claims 1 to 9, said first abutment member (5) and said second abutment member (6) being arranged in a vertical direction, said moving plate (4) being able to move reciprocally in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022776976.1U CN214221933U (en) | 2020-11-26 | 2020-11-26 | Linear moving mechanism and lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022776976.1U CN214221933U (en) | 2020-11-26 | 2020-11-26 | Linear moving mechanism and lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214221933U true CN214221933U (en) | 2021-09-17 |
Family
ID=77699291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022776976.1U Active CN214221933U (en) | 2020-11-26 | 2020-11-26 | Linear moving mechanism and lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214221933U (en) |
-
2020
- 2020-11-26 CN CN202022776976.1U patent/CN214221933U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR940003790B1 (en) | Lever having swingable fulcrum and mechanical device using said lever device | |
| TW201139155A (en) | Squeegee balance adjusting apparatus and squeegee balance adjusting method of screen printer | |
| CN214221933U (en) | Linear moving mechanism and lifting device | |
| CN112047068A (en) | Positioning device | |
| US3136879A (en) | Self-equalizing welding gun | |
| CN112928039A (en) | Height automatic compensation stable measuring device | |
| CN112917708A (en) | Cutting equipment and cutting device | |
| CN220126296U (en) | Tensioning and deviation rectifying mechanism for abrasive belt rice mill | |
| AU2019219324B2 (en) | Automated parking device | |
| CN116493435A (en) | Symmetrical positioning mechanism applied to longitudinal beam of caravan | |
| CN211855251U (en) | Measuring device for a pore structure | |
| CN104101962A (en) | Fiber aligning micro-stage | |
| CN221159768U (en) | Eccentric grinding mechanism | |
| CN221170392U (en) | Linear guide locking device with protection function and linear guide | |
| CN220060239U (en) | Two-way reset pivot structure | |
| CN201607739U (en) | Single-power bidirectional linkage mechanism | |
| CN108823827B (en) | Pressure foot lifting device | |
| CN110455516A (en) | A kind of spring test device and test method | |
| CN115042431B (en) | Two-way 3D printing scraper system of initiative switching and detection | |
| CN214176070U (en) | Tabletting device | |
| CN216560409U (en) | Ultrasonic flaw detection device for rail head tread of groove rail | |
| CN220239634U (en) | Mechanically supercharged roller press | |
| CN116767509A (en) | Master-slave switching device | |
| CN216560408U (en) | Ultrasonic flaw detection device for groove rail bottom plane or rail bottom tread | |
| CN219216575U (en) | Rotary pushing mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |