Buffer type belt pulley bearing taking-out device

Abstract

The utility model belongs to the technical field of bearing dismounting tools, and particularly relates to a buffer type belt pulley bearing taking-out device which comprises a positioning cylinder, an ejection mechanism and a guide mechanism, the positioning cylinder is fixedly arranged, a belt pulley workpiece is sleeved on the outer wall of the positioning cylinder, and an inner hole of the belt pulley workpiece is communicated with an inner hole of the positioning cylinder; the ejection mechanism comprises a screw rod, a nut seat and an ejection shaft, the screw rod is rotationally arranged, the nut seat is in threaded connection with the screw rod, the nut seat is connected with a guide mechanism, and the nut seat rotates along with the screw rod to be close to or away from the positioning cylinder; the ejection shaft is fixed on the nut seat, the ejection shaft and the positioning cylinder are coaxially arranged, the ejection shaft is matched with an inner hole of a belt pulley workpiece, and the ejection shaft moves along with the nut seat and is used for ejecting a bearing in the inner hole of the belt pulley workpiece into the positioning cylinder. Through cooperation of the screw and the nut seat, rotary motion of the screw is converted into linear motion of the nut seat, the ejection shaft is driven to eject the bearing in a buffering mode, uniform stress is guaranteed, and safe and efficient disassembly of the bearing is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing dismounting frock technical field, concretely relates to a kind of buffer formula pulley bearing extraction device. BACKGROUND

[0002] Pulley is commonly used part on machinery, belongs to hub class parts, and the transmission of pulley can alleviate load impact, while pulley transmission runs smoothly, low noise, low vibration, and simple structure, easy to adjust, with overload protection function.Pulley occurs tooth groove wear after long-term use, easy to slip, need to replace pulley, ensure transmission accuracy.Pulley is assembled with bearing in inner hole, and bearing needs to be recycled when replacing pulley, and traditional bearing dismounting mode is easy to cause bearing to scatter or damage inside bearing, and it is time-consuming and laborious when operating, increase production burden. UTILITY MODEL CONTENTS

[0003] According to the defects of the above-mentioned prior art, the utility model aims to provide a kind of buffer formula pulley bearing extraction device, which can safely dismount and recycle the bearing in the pulley.

[0004] To achieve the above object, the technical scheme adopted by the utility model is as follows: a kind of buffer formula pulley bearing extraction device, including positioning cylinder, ejection mechanism and guide mechanism, the positioning cylinder is fixedly arranged, pulley workpiece is sleeved on the outer wall of positioning cylinder, and the inner hole of pulley workpiece is communicated with the inner hole of positioning cylinder;The ejection mechanism includes screw rod, nut seat and ejecting shaft, the screw rod is rotationally arranged, the nut seat is threadedly connected to the screw rod, the nut seat is connected with guide mechanism, and the nut seat approaches or moves away from the positioning cylinder by rotating the screw rod;The ejecting shaft is fixed to the nut seat, the ejecting shaft is coaxially arranged with the positioning cylinder, the ejecting shaft is matched with the inner hole of pulley workpiece, and the ejecting shaft moves with the nut seat and is used to eject the bearing in the inner hole of pulley workpiece into the positioning cylinder.

[0005] Based on the above technical scheme, the outer periphery side of the inner hole of pulley workpiece is formed with an inner concave ring groove, and the pulley is assembled and positioned with the positioning cylinder through the inner concave ring groove, that is, the positioning cylinder is inserted into the inner concave ring groove of pulley workpiece.

[0006] Further, the guide mechanism includes a guide wheel and a connecting rod, the connecting rod is fixedly connected with the nut seat, and the guide wheel is rotationally arranged on the connecting rod, a guide groove is arranged below the guide wheel, and the guide wheel moves along the guide groove.

[0007] Further, the connecting rod is welded to the nut seat to ensure stable connection and accurate guidance.The connecting rod is connected to one end of the nut seat close to the positioning cylinder, rotates with the screw rod, and the nut seat approaches the positioning cylinder, and the connecting part of the nut seat and the screw rod gradually shortens, so that the guide wheel supports the nut seat to avoid the axial deviation of the nut seat.

[0008] Further, the guide wheels are two, symmetrically arranged on both sides of the nut seat.

[0009] Further, the diameter of the ejection shaft is greater than the inner diameter of the bearing outer ring, and during the ejection operation, the ejection shaft is on the inner edge of the end face of the bearing outer ring, and the bearing is ejected.

[0010] Based on the above technical scheme, since the bearing outer ring is in interference fit with the inner hole of the pulley workpiece, when the bearing is ejected, the ejection shaft acts on the end face of the bearing outer ring, so that the bearing can be ejected as a whole, and the bearing is prevented from being scattered or scratched inside.

[0011] Further, the nut seat and the ejection shaft are coaxially arranged, one end of the screw rod passes through the nut seat and the ejection shaft, and the diameter of the screw rod is less than the inner diameter of the bearing inner ring. The nut seat and the ejection shaft are integrally connected with the screw rod, so as to ensure the transmission accuracy and stability.

[0012] Based on the above technical scheme, the length of the ejection shaft is greater than the length of the pulley workpiece and the positioning cylinder in the assembled state, so that the ejection shaft can completely push the bearing away from the inner hole of the pulley workpiece.

[0013] Further, the nut seat and the ejection shaft are an integrated structure, which ensures the strength and reduces the connection error.

[0014] Further, the positioning cylinder is fixedly arranged on the accommodating box, and the accommodating box forms an accommodating cavity for loading bearings, the accommodating cavity is communicated with the inner hole of the positioning cylinder, and the bearings in the accommodating cavity are indirectly pushed out one by one by the ejection shaft. There is no transmission structure in the accommodating cavity, and the bearings are pushed out of the accommodating cavity one by one through the action of sequentially pushing the bearings between adjacent bearings.

[0015] Further, the outlet end of the accommodating cavity away from the positioning cylinder is provided with an inclined downward chute, and the end of the chute is provided with a recycling bin.

[0016] The utility model discloses a main body structure of lathe is improved, can adopt the driving device and screw rod of lathe, rotates through the driving device and drives screw rod.

[0017] The beneficial effects of the utility model are that: the buffer type bearing taking-out device utilizes the ball screw principle to convert the rotary motion of the screw rod into the linear motion of the nut seat, drives the ejection shaft to realize the effect of buffer type ejection bearing, and the ejection process has the characteristics of high precision and high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the pulley workpiece.

[0019] Figure 2 It is the buffer formula pulley bearing take out device structure schematic view of the utility model;

[0020] Figure 3 It is the pulley workpiece unassembly state diagram;

[0021] Figure 4 It is the pulley workpiece assembly state diagram;

[0022] Figure 5 It is the bearing ejection state diagram;

[0023] Figure 6 It is the ejection shaft and bearing contact close-up view;

[0024] Figure 7 It is the guide mechanism schematic view;

[0025] In the drawing,

[0026] 100, pulley workpiece, 101, pulley workpiece inner hole, 102, pulley workpiece inner concave ring groove, 103, bearing, 1031, bearing outer ring, 1032, bearing inner ring;

[0027] 200, positioning cylinder;

[0028] 300, ejecting mechanism, 301, screw rod, 302, nut seat, 303, ejection shaft;

[0029] 400, guide mechanism, 401, guide wheel, 402, guide groove, 403, connecting rod;

[0030] 500, driving mechanism;

[0031] 600, containing box, 601, containing cavity;

[0032] 700, sliding groove;

[0033] 800, recycling bin. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. But the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, therefore the utility model is not limited by the following disclosed specific embodiments.

[0035] Referring to the accompanying drawings, Figures 2-7The application discloses a buffer type pulley bearing taking-out device which comprises a positioning cylinder 200, an ejection mechanism 300 and a guide mechanism 400, the positioning cylinder 200 is fixedly arranged, a pulley workpiece 100 is sleeved on the outer wall of the positioning cylinder 200, and the inner hole 101 of the pulley workpiece is communicated with the inner hole of the positioning cylinder; the ejection mechanism 300 comprises a screw rod 301, a nut seat 302 and an ejection shaft 303, one end of the screw rod 301 is connected with the output end of a driving mechanism 500, the driving mechanism 500 drives the screw rod 301 to rotate, the nut seat 302 is threadedly connected to the end, away from the driving mechanism 500, of the screw rod 301, the nut seat 302 is connected with the guide mechanism 400 for ensuring the linear displacement of the nut seat, and the nut seat 302 rotates along with the screw rod 301 to approach or move away from the positioning cylinder 200; the guide mechanism 400 comprises guide wheels 401, guide grooves 402 and connecting rods 403, two connecting rods 403 are welded and fixed below the nut seat 302, the two guide wheels 401 are rotationally arranged on the two connecting rods 403 respectively, the two guide wheels 401 are symmetrically arranged on the two sides of the nut seat 302, the guide groove 402 extending in the same direction with the screw rod is arranged below the guide wheel 401, and the guide wheel 401 moves along the guide groove 402. The nut seat 302 and the ejection shaft 303 are integrated, and one end of the screw rod 301 penetrates through the nut seat 302 and the ejection shaft 303. The ejection shaft 303, the nut seat 302 and the positioning cylinder 200 are coaxially arranged, the ejection shaft 303 is matched with the inner hole 101 of the pulley workpiece, the diameter of the screw rod 301 is smaller than the inner diameter of the bearing inner ring, the screw rod 301 rotates, the ejection shaft 303 and the nut seat 302 move along the screw rod 301, and the bearing 103 in the inner hole of the pulley workpiece is ejected into the positioning cylinder 200.

[0036] Based on the above technical scheme, the positioning cylinder 200 is designed based on the structure of the pulley workpiece, as shown in the pulley workpiece of an automobile air compressor, Figure 1 The outer periphery of the inner hole of the pulley workpiece is formed with an inner concave ring groove 102, and the pulley workpiece is assembled and positioned with the positioning cylinder 200 through the inner concave ring groove 102, that is, the positioning cylinder 200 is inserted into the inner concave ring groove 102 of the pulley workpiece. Since the two connecting rods 403 are angularly supported below the nut seat 302, the guide wheel 401 rotationally arranged on the connecting rod 403 has a certain inclination angle, and the groove angle of the guide groove 402 is matched with the guide wheel 401.

[0037] Further, the connecting rod 403 is connected to the end, close to the positioning cylinder 200, of the nut seat 302, rotates along with the screw rod 301, the nut seat 302 approaches the positioning cylinder 200, the connecting part of the nut seat 302 and the screw rod 301 gradually shortens, the guide wheel 401 supports and guides the nut seat 302, and the axial deviation of the nut seat is avoided.

[0038] Further, the diameter of the ejection shaft 303 is greater than the inner diameter of the bearing outer ring 1031, and in the ejection operation, the ejection shaft 303 is abutted against the inner edge of the end surface of the bearing outer ring 1031 to eject the bearing 103 as a whole.

[0039] According to the above technical scheme, since the bearing outer ring 1031 is in interference fit with the inner hole 101 of the pulley workpiece, the ejection shaft 303 acts on the end surface of the bearing outer ring 1031 to eject the bearing 103 as a whole, thereby avoiding damage to the bearing or the inner part of the bearing. Since the inner hole of the pulley workpiece has a small flange, the diameter of the ejection shaft 303 is smaller than the inner diameter of the flange of the pulley workpiece, but the flange only covers part of the outer edge of the bearing outer ring 1031, so the diameter of the ejection shaft 303 is greater than the inner diameter of the bearing outer ring 1031, so that the ejection shaft 303 can be in contact with the inner edge of the end surface of the bearing outer ring 1031. The diameter of the ejection shaft 303 cannot be designed too small, otherwise the ejection shaft 303 will only be in contact with the end surface of the bearing inner ring 1032, which will cause the bearing outer ring 1031 and the bearing inner ring 1032 to be separated, thereby damaging the bearing and making the bearing unable to be recycled, resulting in loss. The length of the ejection shaft 303 is greater than the length of the pulley workpiece 100 and the positioning cylinder 200 in the assembled state, so that the ejection shaft can completely push the bearing away from the inner hole of the pulley workpiece.

[0040] Further, the positioning cylinder 200 is fixedly arranged on the containing box 600, and a containing cavity 601 for containing bearings is formed in the containing box 600, and the containing cavity 601 is in communication with the inner hole of the positioning cylinder. There is no transmission structure in the containing cavity, and the bearings are sequentially pushed out of the containing cavity one by one through the pushing action between adjacent bearings.

[0041] Further, the outlet end of the containing cavity away from the positioning cylinder is provided with an inclined downward chute, and the end of the chute is provided with a recycling bin.

[0042] The utility model discloses a main body structure of machine tool is improved, can adopt the driving device and screw rod structure of machine tool, and the screw rod is clamped to the pneumatic clamp of machine tool, and the screw rod is rotated through the driving device and drives the pneumatic clamp to rotate and rotate positively, and the nut base moves forward, and the bearing is ejected from the inner hole of pulley workpiece to the containing box, and the driving device drives the screw rod to rotate reversely, and the nut base moves backward and leaves the pulley workpiece, and the pulley workpiece of bearing to be disassembled is replaced. The driving mechanism is usually a motor. In order to cooperate with the height of machine tool and the operation height of worker, the bracket is arranged below the screw rod, and the guide groove is formed in the upper top surface of the two sides of the bracket. The containing box is fixed on the bracket, and the bearings in the containing cavity are indirectly pushed out one by one through the ejection shaft, and fall into the recycling bin through the chute.

[0043] It should be noted that the part not described in detail of the utility model is prior art.

[0044] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0045] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can be that first and second features directly contact, or first and second features indirectly contact by intermediate medium.Moreover, first feature "over", "above" and "on" second feature can be that first feature is directly above or obliquely above second feature, or just indicates that the horizontal height of first feature is higher than that of second feature.First feature "under", "below" and "under" second feature can be that first feature is directly below or obliquely below second feature, or just indicates that the horizontal height of first feature is less than that of second feature.

[0046] It should be noted that when an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element present.When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element present.The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0047] The above-mentioned is only the best embodiment of the utility model.Obviously, the utility model is not limited to the above-mentioned embodiment, and there are many variations.The ordinary skill in the art can directly derive or think of all variations from the content disclosed in the utility model, which should be considered as the protection scope of the utility model.

Claims

1. A cushioned pulley bearing extractor, characterized by: The device comprises a positioning cylinder, an ejection mechanism and a guide mechanism, the positioning cylinder is fixedly arranged, a pulley workpiece is sleeved on the outer wall of the positioning cylinder, and the inner hole of the pulley workpiece is communicated with the inner hole of the positioning cylinder; the ejection mechanism comprises a screw rod, a nut seat and an ejection shaft, the screw rod is rotationally arranged, the nut seat is threadedly connected to the screw rod, the nut seat is connected with the guide mechanism, and the nut seat moves close to or away from the positioning cylinder along with the rotation of the screw rod; the ejection shaft is fixed to the nut seat, the ejection shaft is coaxially arranged with the positioning cylinder, the ejection shaft is matched with the inner hole of the pulley workpiece, and the ejection shaft moves along with the nut seat and is used for ejecting the bearing in the inner hole of the pulley workpiece into the positioning cylinder.

2. A cushioned pulley bearing extractor as defined in claim 1, wherein: The guide mechanism comprises a guide wheel and a connecting rod, the connecting rod is fixedly connected with the nut seat, the guide wheel is rotationally arranged on the connecting rod, a guide groove is arranged below the guide wheel, and the guide wheel moves along the guide groove.

3. A cushioned pulley bearing extractor as defined in claim 2, wherein: The guide wheel is two and symmetrically arranged on the two sides of the nut seat.

4. A cushioned pulley bearing extractor as defined in claim 1, wherein: The diameter of the ejection shaft is greater than the inner diameter of the bearing outer ring, and the ejection shaft is arranged on the inner edge of the end surface of the bearing outer ring during the ejection operation to eject the bearing.

5. A cushioned pulley bearing extractor as defined in claim 1, wherein: The nut seat and the ejection shaft are coaxially arranged, one end of the screw rod penetrates through the nut seat and the ejection shaft, and the diameter of the screw rod is smaller than the inner diameter of the bearing inner ring.

6. A cushioned pulley bearing extractor as defined in claim 1, wherein: The nut seat and the ejection shaft are an integrated structure.

7. A cushioned pulley bearing extractor as defined in claim 1, wherein: The positioning cylinder is fixedly arranged on a containing box, a containing cavity for loading bearings is formed in the containing box, the containing cavity is communicated with the inner hole of the positioning cylinder, and the bearings in the containing cavity are indirectly pushed out one by one through the ejection shaft.

8. A cushioned pulley bearing extractor as defined in claim 7, wherein: An inclined downward chute is arranged at the outlet end of the containing cavity away from the positioning cylinder, and a recovery bin is arranged at the end of the chute.

9. A cushioned pulley bearing extractor according to any one of claims 1-8, characterized in that: An inner concave ring groove is formed on the outer circumferential side of the inner hole of the pulley workpiece, and the pulley is assembled and positioned with the positioning cylinder through the inner concave ring groove.

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