High-precision flexible knob adjustment mechanism

Abstract

The present invention relates to a high-precision flexible knob adjustment mechanism, including a mounting frame, a servo motor, a reducer, a main cylinder, an auxiliary cylinder, a push plate, an elastic chuck, a cone sleeve and a reset spring, wherein the servo motor is connected to the reducer, the reducer is installed at the top of the mounting frame, the reducer is connected to the elastic chuck and can drive the elastic chuck to rotate axially, the main cylinder and the auxiliary cylinder are respectively installed on both sides of the bottom end of the mounting frame, the main cylinder and the auxiliary cylinder are respectively connected to the two ends of the push plate, the cone sleeve is arranged at the bottom end of the push plate, the cone sleeve is arranged outside the elastic chuck, the reset spring sleeve is arranged outside the cone sleeve, the top end of the reset spring abuts against the end face of the cone sleeve, and the reset spring abuts against the end face of the elastic chuck. The high-precision flexible knob adjustment mechanism realizes automatic adjustment instead of manual adjustment, reduces labor costs for factories, improves assembly efficiency, realizes electrical signal judgment instead of human sensory judgment, and improves product accuracy and product consistency.

Description

Technical field:

[0001] The invention relates to the technical field of thermostat installation tools, and in particular to a high-precision flexible knob adjustment mechanism specially used for an insertion rod mechanical thermostat. Background technology:

[0002] At present, the temperature of the plug-in mechanical thermostat in China is adjusted during the production and debugging process by manually inserting an internal nut with a handle into the temperature adjustment nut of the external thread of the thermostat and manually rotating it. When the sound of the reed inside the thermostat is heard, the on and off point position of the thermostat is judged. This method is relatively inefficient, the consistency of the products produced is not high, and it has high requirements on the operator, which brings great pressure to the enterprise. Summary of the invention:

[0003] The object of the present invention is to provide a high-precision flexible knob adjustment mechanism which is easy to use and can greatly improve assembly efficiency and product accuracy.

[0004] The present invention is achieved through the following technical scheme: a high-precision flexible knob adjustment mechanism, comprising a mounting frame, a servo motor, a reducer, a main cylinder, an auxiliary cylinder, a push plate, an elastic chuck, a cone sleeve and a return spring, the servo motor is connected to the reducer, the reducer is installed at the top of the mounting frame, the reducer is connected to the elastic chuck and can drive the elastic chuck to rotate axially, the main cylinder and the auxiliary cylinder are respectively correspondingly installed on both sides of the bottom end of the mounting frame, the main cylinder and the auxiliary cylinder are respectively connected to the two ends of the push plate, the main cylinder and the auxiliary cylinder can drive the push plate to rise and fall along the elastic chuck, the cone sleeve is arranged at the bottom end of the push plate, the cone sleeve is arranged outside the elastic chuck, the push plate can drive the cone sleeve to rise and fall along the elastic chuck to make the elastic chuck close or expand, the return spring is arranged outside the cone sleeve, the top of the return spring abuts against the end face of the cone sleeve, the return spring abuts against the end face of the elastic chuck, and the return spring can push the cone sleeve to move upward along the elastic chuck.

[0005] In order to facilitate connection, the reducer is connected to the elastic collet through a coupling.

[0006] In order to facilitate driving the elastic collet to rotate, a bearing assembly is arranged between the elastic collet and the coupling.

[0007] Preferably, the bearing assembly includes a bearing seat, a top plane bearing, a shaft retaining ring and a bottom plane bearing, the bearing seat is fixed to the bottom end of the mounting frame and is sleeved outside the coupling, the top plane bearing is arranged in the bearing seat and is sleeved outside the elastic collet, the shaft retaining ring is arranged at the top of the top plane bearing and is sleeved outside the elastic collet, the shaft retaining ring presses the top plane bearing into the bearing seat, the bottom plane bearing is arranged at the bottom end of the push plate and is sleeved outside the elastic collet, and the tapered sleeve is arranged at the bottom end of the bottom plane bearing.

[0008] In order to install the return spring and facilitate the separation of the cone sleeve and the elastic chuck, a first annular step is provided at the top end of the cone sleeve, a second annular step is provided at the bottom end of the elastic chuck, and the return spring is provided between the first annular step and the second annular step.

[0009] In order to facilitate driving the elastic collet to clamp or loosen the temperature regulating nut of the temperature controller, a conical surface matching with the conical sleeve is arranged outside the elastic collet.

[0010] In order to facilitate the adjustment of the speed of the push rods of the main cylinder and the auxiliary cylinder, the main cylinder and the auxiliary cylinder are respectively provided with regulating valves.

[0011] The beneficial effects of the present invention are: the high-precision flexible knob adjustment mechanism realizes automatic adjustment instead of manual adjustment, reduces labor costs for factories, improves assembly efficiency, realizes electrical signal judgment instead of human sensory judgment, and improves product accuracy and product consistency. Description of the drawings:

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the high-precision flexible knob adjustment mechanism of the present invention;

[0013] Figure 2 It is a partial cross-sectional view of the high-precision flexible knob adjustment mechanism of the present invention;

[0014] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A. Specific implementation method:

[0015] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0016] like Figure 1-3A high-precision flexible knob adjustment mechanism shown in the figure includes a mounting frame 3, a servo motor 1, a reducer 2, a main cylinder 4, an auxiliary cylinder 13, a push plate 6, an elastic chuck 7, a taper sleeve 9 and a reset spring 8. The servo motor 1 is connected to the reducer 2, and the reducer 2 is installed at the top of the mounting frame 3. The output shaft of the reducer 2 is fixedly connected to the top of the elastic chuck 7 through a coupling 15. The main cylinder 4 and the auxiliary cylinder 13 are respectively fixed on both sides of the bottom end of the mounting frame 3. The main cylinder 4 and the auxiliary cylinder 13 are respectively provided with regulating valves. The main cylinder 4 and the auxiliary cylinder 14 are respectively connected to the left and right ends of the push plate 6. In addition, a bearing assembly is arranged outside the elastic chuck 7. The bearing assembly includes a bearing seat 14, a top plane bearing 11, a shaft retaining ring 12 and a bottom plane bearing 10. The bearing seat 14 is fixed at The bottom end of the mounting frame 3 is sleeved on the outside of the coupling 15, the top plane bearing 11 is arranged in the bearing seat 14 and sleeved on the outside of the elastic collet 7, the shaft retaining ring 12 is arranged on the top of the top plane bearing 11 and sleeved on the outside of the elastic collet 7, the shaft retaining ring 12 presses the top plane bearing 11 into the bearing seat 14, the bottom plane bearing 10 is fixed at the bottom end of the push plate 6 and sleeved on the outside of the elastic collet 7, the tapered sleeve 9 is arranged at the bottom end of the bottom plane bearing 10, the tapered sleeve 9 is sleeved on the outside of the elastic collet 7, and the elastic collet 7 is provided with a tapered surface 72 matching the tapered sleeve 9, the reset spring 8 is sleeved on the outside of the tapered sleeve 9, the top of the tapered sleeve 9 is provided with a first annular step 91, the bottom end of the elastic collet 7 is provided with a second annular step 71, and the reset spring 8 is arranged between the first annular step 91 and the second annular step 71.

[0017] The working principle of the present invention is as follows: when the mechanism moves to the specified position through the linear module, the main cylinder 4 pushes the push plate 6. Since the simultaneous pushing will shorten the life of the cylinders, because the air intake of the cylinders cannot be guaranteed to be the same, when the air source is unstable, the two cylinders will be stuck. Therefore, the auxiliary cylinder 13 uses the regulating valve 5 to ensure that the speed of the cylinder push rod is slightly less than the movement speed of the push rod of the main cylinder 4 to push the push plate 6. Since the strokes of the main and auxiliary cylinders are the same, the push plate 6 eventually reaches a balanced state. The push plate 6 pushes the bottom plane bearing 10 and the tapered sleeve 9, the reset spring 8 is compressed, and the contraction of the elastic chuck 7 is achieved through the downward movement of the tapered sleeve 9. Complete the action of clamping the adjusting nut on the thermostat 16; after clamping the adjusting nut, the servo motor 1 acts to decelerate and amplify the torque through the planetary reducer 2, and transmits the torque and speed to the elastic chuck 7 through the coupling 15 to adjust the adjusting nut on the thermostat 16. When the reed inside the thermostat 16 acts, the servo motor 1 brakes immediately, and the cylinder rods of the auxiliary cylinder 13 and the main cylinder 4 drive the push plate 6 to pull back. The speed of the auxiliary cylinder rod is greater than that of the main cylinder rod. The reset spring 8 pushes the cone sleeve 9 to move upward, so that the elastic chuck 7 is loosened from the adjusting nut of the thermostat, and the mechanism moves to the specified position through the module to wait for the debugging of the next workpiece.

[0018] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “top”, “bottom”, “side” and “end” are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0019] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set", "provided with", etc. 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.

[0020] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A high-precision flexible knob adjustment mechanism, characterized in that: It includes a mounting frame, a servo motor, a reducer, a main cylinder, an auxiliary cylinder, a push plate, an elastic chuck, a cone sleeve and a reset spring, the servo motor is connected to the reducer, the reducer is installed at the top of the mounting frame, the reducer is connected to the elastic chuck and can drive the elastic chuck to rotate axially, the main cylinder and the auxiliary cylinder are respectively installed on both sides of the bottom end of the mounting frame, the main cylinder and the auxiliary cylinder are respectively connected to the two ends of the push plate, the main cylinder and the auxiliary cylinder can drive the push plate to rise and fall along the elastic chuck, the cone sleeve is arranged at the bottom end of the push plate, the cone sleeve is arranged outside the elastic chuck, the push plate can drive the cone sleeve to rise and fall along the elastic chuck to make the elastic chuck close or expand, the reset spring is arranged outside the cone sleeve, the top of the reset spring abuts against the end face of the cone sleeve, the reset spring abuts against the end face of the elastic chuck, and the reset spring can push the cone sleeve to move upward along the elastic chuck; The reducer is connected to the elastic collet through a coupling, and a bearing assembly is arranged between the elastic collet and the coupling; the bearing assembly includes a bearing seat, a top plane bearing, a shaft retaining ring and a bottom plane bearing, the bearing seat is fixed to the bottom end of the mounting frame and sleeved outside the coupling, the top plane bearing is arranged in the bearing seat and sleeved outside the elastic collet, the shaft retaining ring is arranged at the top of the top plane bearing and sleeved outside the elastic collet, the shaft retaining ring presses the top plane bearing into the bearing seat, the bottom plane bearing is arranged at the bottom end of the push plate and sleeved outside the elastic collet, and the tapered sleeve is arranged at the bottom end of the bottom plane bearing; The top end of the cone sleeve is provided with a first annular step, the bottom end of the elastic clamp is provided with a second annular step, and the return spring is arranged between the first annular step and the second annular step.

2. The high-precision flexible knob adjustment mechanism according to claim 1, characterized in that: The elastic chuck is provided with a conical surface outside which matches with the conical sleeve.

3. The high-precision flexible knob adjustment mechanism according to claim 1, characterized in that: The main cylinder and the auxiliary cylinder are respectively provided with regulating valves.

Images