CN106763623A - A kind of eccentric friction speed synchronous interaction mechanism - Google Patents

Abstract

The invention discloses an eccentric different-speed synchronous linkage mechanism, which is characterized in that: the left and right sides of the installation frame are provided with active guide rails and driven guide rails; the active guide rail and the driven guide rail are provided with active sliders and driven sliders; The inside of the slider and the driven slider are connected with a driving rack and a driven rack with different tooth pitches; a linkage gear consisting of two coaxial gears of different sizes is arranged between the driving rack and the driven rack. The large gear meshes with the driving rack, and the pinion meshes with the driven rack; the roller of the eccentric wheel assembly is arranged on the driving slider; the guide rail is covered with a compression spring. Its advantages are: scientific structure, easy manufacture, small size, convenient assembly, low cost, different speed linkage action can be realized with only one driving power source, easy to control, safe and reliable, and can be widely used in clamping mechanism and tensioning mechanism Or different speed linkage equipment with different linkage speeds, which is convenient for the automatic control of related equipment, and has a great application prospect.

Description

An Eccentric Different Speed Synchronous Linkage Mechanism

technical field

The invention relates to a linkage device, in particular to a different-speed linkage equipment with different linkage speeds.

Background technique

The traditional clamping mechanism, tensioning mechanism or different-speed linkage equipment with different linkage speeds often use a mechanism with a dual-drive power source, and the power source often uses a cylinder, motor, etc. Its disadvantages are that the control system is relatively complex due to the need to control the actions of two power sources at the same time, resulting in poor reliability of the linkage action of the mechanism, large equipment volume, high cost of power source procurement and use, and is not conducive to energy conservation and environmental protection.

Contents of the invention

The present invention aims at the defects of the above-mentioned different-speed linkage equipment with dual driving power sources, and provides a different-speed linkage equipment with better performance, small size and low cost with a single driving power source.

In order to achieve the above object, the solution adopted by the present invention is: an eccentric differential speed synchronous linkage mechanism, including a mounting frame, and a power source fixed on the mounting frame; its feature is: the left and right sides of the mounting frame are provided with parallel guide rails , from left to right are the active guide rail and the driven guide rail; there are sliders on the active guide rail and the driven guide rail, which are respectively the active slider and the driven slider; the inner sides of the active slider and the driven slider are connected to each other There are racks arranged in parallel, which are the driving rack and the driven rack respectively. The tooth pitches of the driving rack and the driven rack are different; there is a rotatable linkage gear between the driving rack and the driven rack. The gear is set on the installation frame through the bearing; the driving rack and the driven rack are meshed with the linkage gear respectively; the power source is an eccentric runner assembly installed outside the installation frame, and the eccentric runner assembly includes a reduction motor, Wheels and rollers; the deceleration motor is set on the outside of the active slider, the runner is set on the end of the drive shaft of the deceleration motor, the outer side of the runner is provided with an eccentric circular groove, the roller is set on the active slider, and the roller extends into the eccentric In the circular groove and keep rolling contact with the eccentric circular groove; the active guide rail is covered with a compression spring that pushes the active slider upward; the driven guide rail is covered with a compression spring that pushes the driven slider downward; the driven slider There are two limit switches, one upper and one lower, on the outside, which are the upper limit switch and the lower limit switch. The limit switch can be used as a travel switch to provide a position signal or a control signal for the control circuit.

As an illustration of the above technical solution, the active force generated by the compression spring makes the active slider and the driven slider press against each other, and the runner of the eccentric runner assembly drives the active rack to move up and down bidirectionally through the roller and the active slider to control the active slider. The block and the driven slider are pressed against each other or opened in the opposite direction. Only one power source is needed to push the active rack to do linear motion, the active rack drives the linkage gear to rotate, and the dynamic linkage gear drives the driven rack to also perform linkage linear motion opposite or opposite to the active rack, but due to the tooth distance between the two They are not the same, and the moving speeds of the two are also different. Therefore, the driving rack and the driven rack drive the driving slider and the driven slider to move, and different speed linkage can be realized. Because it is a single driving power source, the control is more convenient, the volume can be made smaller, the linkage of different speeds is realized through mechanical transmission, the control is more convenient, energy saving and environmental protection, production costs, maintenance and use costs are low. The speed ratio can be changed by changing the size of the tooth pitch, that is, within a unit time, the active slider and the driven slider move oppositely or oppositely, but the strokes of the two are different. Among them, the linkage function can be realized by connecting the external linkage mechanism with the active slider and the driven slider.

As an improvement of the above technical solution, the aforementioned linkage gear is composed of two coaxial gears of different sizes, wherein the large gear meshes with the driving rack, and the pinion meshes with the driven rack. Since the angular speed of the large and small gears is the same when they rotate, but the linear speed is different, the speed transmitted to the rack is also different, so different linkage speeds can be realized.

As a further illustration of the above technical solution, the aforementioned guide rail is a dovetail guide rail, and the slider is a dovetail groove slider.

As an improvement of the above technical solution, a chute is provided on the bottom side of the aforementioned rack, and a support roller supporting the rack is provided in the chute, and the support roller is fixed on the installation frame. The chute is matched with the roller, which can not only support the function of the rack, but also play the role of limiting the stroke of the rack.

As a further illustration of the above technical solution, the lower end of the aforementioned active slider is connected with a link that extends downward to the bottom of the installation frame, then extends forward, then extends to the right to the center of the installation frame, and then extends to the bottom of the installation frame. Linked crank arms that are not in contact with the mounting frame. The linked crank arm can bypass the workpiece to realize the up and down linkage.

It can be seen from the above scheme that the advantages of the present invention are: scientific structure, simple and practical, stable structure, easy to manufacture, small in size, convenient in assembly, low in cost, and can realize different-speed linkage action with only one driving power source, easy to control , safe and reliable, can be widely used in clamping mechanism, tensioning mechanism or different speed linkage equipment with different linkage speeds, convenient for automatic control of related equipment, and has a great application prospect.

Description of drawings

Figure 1 is a schematic diagram of an eccentric differential synchronous linkage mechanism.

FIG. 2 is a schematic diagram of the eccentric wheel assembly in FIG. 1 .

Marking instructions: 100—installation frame, 101—driving rack, 102—driven rack, 103—driving slider, 104—driven slider, 105—big gear, 106—pinion, 107—driving guide rail, 108 - driven guide rail, 109 - compression spring, 111 - upper limit switch, 112 - lower limit switch, 113 - geared motor, 114 - runner, 116 - roller, 117 - eccentric circular groove, 121 - support roller, 122 - slide Groove; 9—link crank arm.

detailed description

The present invention and its beneficial technical effects will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Referring to Figures 1 to 2, it can be seen from the figures that a different-speed linkage mechanism driven by a spur rack 116 includes an installation frame 100 and a power source fixed on the installation frame 100; Guide rails, from left to right are respectively active guide rail 107 and driven guide rail 108; Active guide rail 107 and driven guide rail 108 are provided with slide block, are respectively active slide block 103 and driven slide block 104; Active slide block 103 and follower slide block The inner sides of the movable sliders 104 opposite to each other are connected with racks arranged in parallel, which are respectively the driving rack 101 and the driven rack 102. The tooth pitches of the driving rack 101 and the driven rack 102 are different; the driving rack 101 and the driven rack 102 A rotatable linkage gear is arranged between the driven racks 102, and the gears are arranged on the mounting frame 100 through bearings; the driving rack 101 and the driven rack 102 are meshed with the linkage gears respectively; The eccentric runner 114 assembly on the outside of 100, the eccentric runner 114 assembly includes a reduction motor 113, a runner 114 and a roller 116; , the outer side of the runner 114 is provided with an eccentric circular groove 117, the roller 116 is located on the active slider 103, the roller 116 extends into the eccentric circular groove 117 of the runner 114 and keeps rolling contact with the eccentric circular groove 117; A compression spring for pushing the active slider 103 upward is sleeved; a compression spring for pushing the driven slider 104 downward is sleeved on the driven guide rail 108 .

Preferably, the linkage gear is composed of two coaxial gears of different sizes, wherein the large gear 105 meshes with the driving rack 101 , and the pinion gear 106 meshes with the driven rack 102 . The guide rail is a dovetail guide rail, and the slider is a dovetail groove slider. A chute 122 is provided on the bottom side of the rack, and a support roller 121 for supporting the rack is provided in the chute 122 , and the support roller 121 is fixed on the installation frame 100 . The lower end of the active slider 103 is connected to extend downwards to the bottom of the installation frame 100, then extend forward, then extend to the right to the center of the installation frame 100, and then extend to the bottom of the installation frame 100 but not in contact with the installation frame. The linked crank arm 9 of 100 contacts. The outer side of the driven slider 104 is provided with two limit switches, one upper and one lower, which are respectively an upper limit switch 111 and a lower limit switch 112 .

When in use, as long as the relevant action parts are connected with the corresponding driving slider 103 or the linkage crank arm 9, reliable linkage action at different speeds can be realized.

The above specification and specific examples do not constitute any limitation to the present invention. The present invention is not limited to the specific implementation methods disclosed and described above. Some modifications and variations of the present invention should also fall within the protection scope of the claims of the present invention. Inside.

Claims (5)

1. a kind of eccentric friction speed synchronous interaction mechanism, including installation frame, and it is fixed on the power source on installation frame；It is special Levying is：The installation frame left and right sides is provided with the guide rail be arrangeding in parallel, from left to right respectively active guide rail and driven guide rail；Actively Guide rail and driven guide rail are provided with sliding block, respectively active sliding block and driven sliding block；Active sliding block and driven sliding block are relative to each other Inner side linking have the tooth pitch of the tooth bar that be arranged in parallel, respectively active tooth bar and driven tooth bar, active tooth bar and driven tooth bar Differ；Rotatable linkage gear is provided between active tooth bar and driven tooth bar, gear is arranged on installation frame by bearing On；Active tooth bar and driven tooth bar are connected with linkage gear engagement respectively；The power source is installed in installation frame outside Eccentric wheel set assembly, eccentric wheel set assembly include reducing motor, runner and roller；Reducing motor is located at active sliding block outside, Runner is arranged on the driveshaft end of reducing motor, and runner outside is provided with eccentric circular groove, and roller in active sliding block, stretch by roller Enter in the eccentric circular groove of runner and keep being in rolling contact with eccentric circular groove；It is cased with up push up active sliding block on active guide rail Compression spring；The compression spring for turning down driven sliding block is cased with driven guide rail；Driven sliding block outside is provided with one on the other two Individual limit switch, is respectively upper limit position switch and lower position switch.

2. bias friction speed synchronous interaction mechanism as claimed in claim 1, it is characterized in that：The linkage gear be two sizes not Same in-line gears composition, wherein, gear wheel is engaged with active tooth bar, and little gear is engaged with driven tooth bar.

3. bias friction speed synchronous interaction mechanism as claimed in claim 2, it is characterized in that：The guide rail is dovetail guide, sliding block It is dovetail groove sliding block.

4. the eccentric friction speed synchronous interaction mechanism as described in claim 1,2 or 3, it is characterized in that：The tooth bar bottom side is provided with cunning Groove, is provided with the back-up roller wheel for supporting tooth bar in chute, back-up roller wheel is fixed on installation frame.

5. bias friction speed synchronous interaction mechanism as claimed in claim 4, it is characterized in that：The active sliding block lower end linking is oriented Under extend to installation frame lower section, then prolong liter again forwards, followed by behind the center for extending right to installation frame, then The linkage for extending but not contacted with installation frame to the lower section of installation frame is cranked arm.