A last processing speed reducer protection mechanism and processing device

Abstract

The utility model belongs to overload protection device technical field especially relates to a kind of shoe tree processing speed reducer protection mechanism and processing device, including mounting seat and the speed reducer being set in mounting seat, and the driving end transmission of speed reducer is connected with rocker central shaft. Rocker central shaft is provided with first recess along circumference, first recess is embedded with deep groove ball bearing piece, and deep groove ball bearing piece includes first outer ring, first inner ring and a plurality of first steel ball, first outer ring is equipped with first half-arc concave cavity, first inner ring is equipped with second half-arc concave cavity, and the first limiting chamber clamped in first steel ball is formed by the cooperation of both. Wherein, when rocker central shaft is hit and shrinks radially upwards, first steel ball is shared and consumes radial impact force by the port friction of first half-arc concave cavity and second half-arc concave cavity. Deep groove ball bearing piece and double-row roller bearing piece cooperate, effectively convert radial impact force into friction and dissipate, improve the service life of speed reducer under harsh conditions.

Description

Technical Field

[0001] This utility model belongs to the technical field of overload protection devices, and in particular relates to a protection mechanism and processing device for a shoe last processing reducer. Background Technology

[0002] In high-precision, high-load machining fields such as shoe last processing, the core transmission component of rocker arm machining equipment is the reducer and its output shaft. The reducer is a combination of a motor and a speed reducer; the motor provides power, and the speed reducer reduces the output speed and increases the output torque. Reducers often experience severe radial impact forces due to accidental impacts or periodic off-center loading during processing. These impact forces can easily be directly transmitted to the precision gears inside the reducer, leading to bearing damage or shaft seal failure, resulting in reducer scrapping, equipment downtime, and disruption to production continuity. Utility Model Content

[0003] The purpose of this utility model is to provide a protection mechanism for a speed reducer in shoe last processing, which aims to solve the technical problem that speed reducers are easily scrapped when subjected to impact in the prior art.

[0004] To achieve the above objectives, this utility model provides a protective mechanism for a shoe last processing reducer, including a mounting base and a reducer disposed within the mounting base. The drive end of the reducer is connected to a rocker arm central shaft. The rocker arm central shaft has a first groove along its circumference, and a deep groove ball bearing is embedded in the first groove. The deep groove ball bearing includes a first outer ring, a first inner ring, and a plurality of first steel balls. The first outer ring is mounted on the inner wall of the mounting base, and the first inner ring is mounted on the outer wall of the rocker arm central shaft. The first outer ring has a first semi-circular cavity, and the first inner ring has a mirror-symmetrical second semi-circular cavity. The first and second semi-circular cavities cooperate to form a first limiting chamber that clamps the first steel balls. When the rocker arm central shaft is impacted and retracts radially upwards, the first steel balls, through friction with the ports of the first and second semi-circular cavities, share and consume the radial impact force.

[0005] Furthermore, the rocker arm central shaft is also provided with a second groove along the circumference. The second groove is embedded with a double-row roller bearing component, which includes a second outer ring, a second inner ring, and a plurality of cylindrical rollers. The second inner ring is installed on the outer wall of the rocker arm central shaft, and the second outer ring is installed on the inner wall of the corresponding mounting seat. The second outer ring and the second inner ring are respectively provided with a first alignment cavity and a second alignment cavity symmetrically arranged, which cooperate to form a second limiting chamber. When the rocker arm central shaft is impacted and retracts radially upward, the cylindrical rollers rub against the ports of the first alignment cavity and the second alignment cavity, thus sharing and consuming the radial impact force.

[0006] Furthermore, the axial line of the cylindrical roller remains parallel to the vertical line.

[0007] Furthermore, the cylindrical rollers are provided in two sets arranged vertically, corresponding to both the first and second alignment cavities.

[0008] Furthermore, a dividing frame extending outward is provided at the middle of the second inner ring, and an upper limit part and a lower limit part are respectively formed at the upper and lower ends of the second inner ring. The two limiting parts cooperate with the dividing frame to separate the upper and lower sets of cylindrical rollers.

[0009] Furthermore, the deep groove ball bearing and the double row roller bearing are arranged side by side along the axial direction of the rocker arm's central axis.

[0010] Furthermore, a shoe last clamp is connected to the lower part of the rocker arm's central shaft.

[0011] Furthermore, a limiting platform is provided below the mounting base, and a through-hole extends from below the limiting platform. A rod passes through the through-hole and extends into the shoe last clamp to limit the rotation of the shoe last clamp.

[0012] Furthermore, it also includes a shoe last processing device, which includes the above-mentioned shoe last processing reducer protection mechanism.

[0013] The above-mentioned technical solutions of the shoe last processing reducer protection mechanism provided in this embodiment of the utility model have at least one of the following technical effects: This patent utilizes a first groove with an embedded deep groove ball bearing on the central shaft of the rocker arm, and a limiting chamber formed by the semi-circular cavity on the first outer ring and the first inner ring. When the central shaft of the rocker arm contracts inward due to impact, the first steel ball effectively converts the radial impact force into frictional force and dissipates it through frictional movement with the port of the semi-circular cavity. This significantly improves the service life and reliability of the reducer under harsh operating conditions. Furthermore, this protective mechanism is integrated into the mounting base, resulting in a compact structure that does not occupy additional space. It also does not affect transmission accuracy and efficiency during normal operation, providing crucial technical support for the continuous and stable operation of equipment in the shoe last processing field. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the overall structure of the shoe last processing reducer protection mechanism provided in this embodiment of the utility model; Figure 2 A cross-sectional schematic diagram of the shoe last processing reducer protection mechanism provided in an embodiment of this utility model; Figure 3 for Figure 2 A partial view of a deep groove ball bearing component; Figure 4 for Figure 2 A partial view of a double-row roller bearing component.

[0016] The following are the labeling elements in the figure: 100. Mounting base; 110. Reducer; 120. Rocker arm center shaft; 130. First groove; 140. Second groove; 150. Shoe last clamp; 160. Limiting platform; 170. Through-hole component; 180. Support rod; 200, Deep groove ball bearing component; 210, First outer ring; 211, First semi-circular cavity; 220, First inner ring; 221, Second semi-circular cavity; 230, First limiting chamber; 240, First steel ball; 300, Double row roller bearing component; 310, Second outer ring; 311, First alignment cavity; 320, Second inner ring; 321, Second alignment cavity; 330, Second limiting chamber; 340, Cylindrical roller; 350, Separator; 360, Upper limit part; 370, Lower limit part. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings 1-4, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figure 1-4 The described embodiments are exemplary and intended to explain embodiments of the present invention, and should not be construed as limiting the present invention.

[0018] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0021] In one embodiment of this utility model, such as Figure 1-3 As shown, a protective mechanism for a shoe last processing reducer 110 is provided, including a mounting base 100 and a reducer 110 disposed within the mounting base 100. The drive end of the reducer 110 is connected to a rocker arm central shaft 120, and a shoe last clamp 150 is connected to the lower part of the rocker arm central shaft 120. The rocker arm central shaft 120 has a first groove 130 arranged circumferentially, and a deep groove ball bearing component 200 is embedded in the first groove 130. The deep groove ball bearing component 200 includes a first outer ring 210, a first inner ring 220, and a plurality of first steel balls 240. The first outer ring 210 is mounted on the inner wall of the mounting base 100, and the first inner ring 220 is mounted on the outer wall of the rocker arm central shaft 120. The first outer ring 210 has a first semi-circular cavity 211, and the first inner ring 220 has a mirror-symmetrical second semi-circular cavity 221. The first semi-circular cavity and the second semi-circular cavity 221 cooperate to form a first limiting chamber 230 that clamps the first steel balls 240. When the rocker arm central shaft 120 is impacted and retracts radially upward, the first steel ball 240 rubs against the ports of the first semi-circular cavity 211 and the second semi-circular cavity 221, thus sharing and consuming the radial impact force.

[0022] Specifically, during the processing, the reducer 110 outputs power to drive the rocker arm central shaft 120 to rotate smoothly. At this time, the deep groove ball bearing component 200 is in a normal load-bearing and guided rotation state, with its first inner ring 220 rotating synchronously with the rocker arm central shaft 120, and the first steel ball 240 rolling freely within the first limiting chamber 230. When the processing equipment encounters an impact, the rocker arm central shaft 120 is subjected to an abnormal upward radial impact force. Since the first outer ring 210 is fixedly installed on the inner wall of the mounting base 100 and its position remains unchanged, the upward movement of the first inner ring 220 causes a change in the relative position of its second semi-circular concave cavity 221 and the first semi-circular concave cavity 211 of the first outer ring 210. The shape of the first limiting chamber 230 formed by the two is forcibly changed, and the space of the chamber in the impact direction is compressed. The change in the chamber shape causes the first steel ball 240, which was originally freely arranged within the chamber, to be squeezed by the first inner ring 220 and the second semi-circular cavity 221. This forces the ball to undergo intense compression and friction with the port edges of the first semi-circular cavity 211 and the second semi-circular cavity 221, forcing the first semi-circular cavity 211 to return to its original position. During this process, the enormous radial impact kinetic energy is effectively dispersed into heat energy and kinetic energy transmitted to the mounting base 100 through the friction between the first steel ball 240 and the port of the semi-circular cavity, thereby protecting the reducer 110 body.

[0023] In the second embodiment, as Figure 1 , 4 As shown, the rocker arm central shaft 120 is also provided with a second groove 140 along the circumference. The second groove 140 is fitted with a double-row roller bearing component 300. The double-row roller bearing component 300 includes a second outer ring 310, a second inner ring 320, and a plurality of cylindrical rollers 340. The second inner ring 320 is installed on the outer wall of the rocker arm central shaft 120, and the second outer ring 310 is installed on the inner wall of the corresponding mounting base 100. The second outer ring 310 and the second inner ring 320 are respectively provided with symmetrically arranged first alignment cavities 311 and second alignment cavities 321, which cooperate to form a second limiting chamber 330. When the rocker arm central shaft 120 is impacted and retracts radially upward, the cylindrical rollers 340 rub against the ports of the first alignment cavities 311 and the second alignment cavities 321, sharing and consuming the radial impact force. Specifically, the deep groove ball bearing component 200 and the double-row roller bearing component 300 move in coordination. When the rocker arm central shaft 120 is impacted and retracts radially, the double-row roller bearing 300 in the second groove 140 is activated, and its second inner ring 320 moves with the shaft, forcing the cylindrical roller 340 to generate strong compression and rolling friction with the ports of the first and second alignment cavities 321. This prevents the impact force from directly reaching the reducer 110 after the first barrier fails.

[0024] Furthermore, such as Figure 4As shown, the axial line of the cylindrical rollers 340 is parallel to the vertical line. Two sets of cylindrical rollers 340 are arranged vertically, corresponding to both the first and second alignment cavities 311 and 321. A separator 350 extending outwards is provided at the middle of the second inner ring 320. The upper and lower ends of the second inner ring 320 respectively form an upper limit portion 360 and a lower limit portion 370, which, together with the separator 350, separate the upper and lower sets of cylindrical rollers 340. The deep groove ball bearing 200 and the double-row roller bearing 300 are arranged axially side-by-side on the rocker arm central axis 120. When an upward impact occurs, the upper and lower sets of cylindrical rollers 340 can act synchronously and evenly with their respective alignment cavities, sharing the load. The roller axial direction is perpendicular to the impact direction, ensuring a stable stress state. During the impact and subsequent reset process, the separator 350 and the upper and lower limit parts 370 form a physical isolation cavity, ensuring that the upper and lower rows of cylindrical rollers 340 move in their respective tracks, preventing the two rows of rollers from colliding or even stacking due to severe vibration or tilting, and always maintaining an orderly arrangement.

[0025] In the third embodiment, as Figure 1 As shown, a limiting platform 160 is provided below the mounting base 100, and a through-hole 170 extends from below the limiting platform 160. A rod 180 passes through the through-hole 170 and extends into the shoe last clamp 150 to limit the rotation of the shoe last clamp 150. This structure is a protection mechanism for the shoe last when the reducer 110 stops, reducing unnecessary operation of the shoe last clamp 150 when the reducer 110 stops operating.

[0026] A shoe last processing device includes a protection mechanism for the shoe last processing reducer 110.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protection mechanism for a shoe last processing reducer, characterized in that, The device includes a mounting base and a speed reducer disposed within the mounting base. The drive end of the speed reducer is connected to a rocker arm central shaft. The rocker arm central shaft has a first groove along its circumference. A deep groove ball bearing is embedded in the first groove. The deep groove ball bearing includes a first outer ring, a first inner ring, and a plurality of first steel balls. The first outer ring is mounted on the inner wall of the mounting base, and the first inner ring is mounted on the outer wall of the rocker arm central shaft. The first outer ring has a first semi-circular cavity, and the first inner ring has a mirror-symmetrical second semi-circular cavity. The first semi-circular cavity and the second semi-circular cavity cooperate to form a first limiting chamber that clamps the first steel balls. When the rocker arm central shaft is impacted and retracts radially upward, the first steel balls share and consume the radial impact force by rubbing against the ports of the first and second semi-circular cavities.

2. The shoe last processing reducer protection mechanism according to claim 1, characterized in that, The rocker arm central shaft is also provided with a second groove along the circumference. The second groove is embedded with a double-row roller bearing component, which includes a second outer ring, a second inner ring, and a plurality of cylindrical rollers. The second inner ring is installed on the outer wall of the rocker arm central shaft, and the second outer ring is installed on the inner wall of the corresponding mounting seat. The second outer ring and the second inner ring are respectively provided with a first alignment cavity and a second alignment cavity symmetrically arranged, which cooperate to form a second limiting chamber. When the rocker arm central shaft is impacted and retracts radially upward, the cylindrical rollers rub against the ports of the first alignment cavity and the second alignment cavity, thus sharing and consuming the radial impact force.

3. The shoe last processing reducer protection mechanism according to claim 2, characterized in that, The axial line of the cylindrical roller remains parallel to the vertical line.

4. The shoe last processing reducer protection mechanism according to claim 2, characterized in that, The cylindrical rollers are provided in two sets arranged vertically, corresponding to the first alignment cavity and the second alignment cavity, each with two sets arranged vertically.

5. The shoe last processing reducer protection mechanism according to claim 2, characterized in that, The second inner ring has an outwardly extending partition at its middle end. The upper and lower ends of the second inner ring respectively form an upper limit part and a lower limit part. The two limit parts cooperate with the partition to separate the upper and lower sets of cylindrical rollers.

6. The shoe last processing reducer protection mechanism according to any one of claims 1-5, characterized in that, The deep groove ball bearing and the double row roller bearing are arranged side by side along the axial direction of the rocker arm's central axis.

7. The shoe last processing reducer protection mechanism according to claim 1, characterized in that, A shoe last clamp is connected to the lower part of the rocker arm's central shaft.

8. The shoe last processing reducer protection mechanism according to claim 1, characterized in that, A limiting platform is provided below the mounting base, and a through-hole extends from below the limiting platform. A rod passes through the through-hole and extends into the shoe last clamp to limit the rotation of the shoe last clamp.

9. A shoe last processing device, characterized in that, It includes a shoe last processing speed reducer protection mechanism as described in any one of claims 1-8.

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