Automatic grinding device for piston core and sleeve of molecular sieve oxygen system

Abstract

The utility model discloses an automatic piston core and sleeve grinding device for a molecular sieve oxygen system, which belongs to the technical field of molecular sieve oxygen production and comprises a driving motor, a speed reducer and a grinding component. The grinding assembly comprises a grinding support, a public driving shaft, a transmission gear, a sleeve driving cylinder, a sleeve clamping piece, a piston core driving cylinder, a piston core driving pin, a piston core driving shaft and a piston core positioning shaft, the speed reducer is connected with the public driving shaft, and the public driving shaft is connected with the sleeve driving cylinder and the piston core driving cylinder; a guide groove is formed in the circumferential outer wall of the piston core driving cylinder, the piston core driving pin is arranged in the guide groove, the sleeve driving cylinder is connected with the sleeve clamping piece, and the piston core driving pin is connected with the two piston core positioning shafts through the two piston core driving shafts. According to the automatic grinding device, the automatic grinding function between the piston core and the sleeve is achieved, the grinding quality, the forming precision and the product percent of pass are remarkably improved, and the grinding efficiency and the production efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to molecular sieve oxygen technology field, concretely relates to a kind of component grinding device for molecular sieve oxygen system, more particularly to a kind of piston core and sleeve automatic grinding device for molecular sieve oxygen system. BACKGROUND

[0002] Molecular sieve oxygen system mainly includes gas source assembly, oxygen concentrator and oxygen supply equipment, gas source assembly mainly includes air compressor, oxygen concentrator mainly includes multiple molecular sieve cylinder and associated device such as comprehensive oxygen socket, and oxygen supply equipment mainly includes oxygen regulator for controlling oxygen concentration and / or flow;Wherein, oxygen regulator is as the equipment of adjusting oxygen concentration and / or flow, and it has important role to oxygen supply quality and oxygen inhalation experience of oxygen inhalation personnel.

[0003] In the oxygen regulator of molecular sieve oxygen system, piston core and sleeve are a kind of key components of oxygen flow control, which is related to the ventilation of oxygen supply assembly, and too large and too small ventilation cannot meet the application requirement, and both will affect user oxygen inhalation amount and oxygen inhalation experience. Figure 1 As shown, piston core 2 is placed in sleeve 1 during use, and oxygen passes through the gap between them, and the oxygen passing amount is controlled using high-precision gap to meet user oxygen inhalation requirement.

[0004] After piston core 2 and sleeve 1 are independently processed, piston core 2 needs to be placed in sleeve 1 for repeated grinding, so that the gap size between them meets higher precision requirement to meet oxygen inhalation requirement;Traditional grinding method between piston core 2 and sleeve 1 is manual grinding, as shown in Figure 1 As shown, one end of piston core 2 is screwed with handle 3, then sleeve 1 is held by one hand of worker, and handle 3 is held by the other hand, piston core 2 is placed in sleeve 1 and repeatedly moved axially to achieve the purpose of grinding.

[0005] The above-mentioned manual grinding method has the following defects: first, manual operation is difficult to ensure that the movement of handle 3 is linear motion, which is easy to cause the center axis of piston core 2 and sleeve 1 to be skewed, and it is also difficult to ensure uniform grinding of piston core 2 on the inner wall of sleeve 1, and the grinding force is easy to concentrate on one side of the inner wall of sleeve 1, causing the hole section of sleeve 1 to be oval, and there is a problem that the ventilation amount of piston core 2 changes greatly in one rotation, and the maximum ventilation amount exceeds the standard value, so the quality of manual grinding is difficult to control, and the precision is difficult to effectively guarantee, and the qualified rate is low;Second, manual grinding needs intermittent rest due to muscle fatigue, and the average frequency of manual grinding for single set of products is 56 times / min, which is low in efficiency and reduces production efficiency. UTILITY MODEL CONTENTS

[0006] The utility model discloses a purpose just in order to solve above -mentioned problem and provide a kind of piston core and sleeve automatic grinding device for molecular sieve oxygen system with good grinding quality, high efficiency.

[0007] The utility model discloses the following technical scheme to realize the above-mentioned purpose:

[0008] A kind of piston core and sleeve automatic grinding device for molecular sieve oxygen system, including drive motor and speed reducer, further including grinding assembly, the rotating shaft of the drive motor is connected with the input end of the speed reducer, the grinding assembly includes grinding support, public drive shaft, transmission gear, sleeve driving cylinder, sleeve clamping piece, piston core driving cylinder, piston core driving pin, first piston core drive shaft, second piston core drive shaft, first piston core positioning shaft and second piston core positioning shaft, the public drive shaft and the sleeve driving cylinder are respectively installed on the grinding support by bearing and can freely rotate, the output end of the speed reducer is connected with one end of the public drive shaft, first transmission gear and the piston core driving cylinder are respectively through the central through-hole of itself and are installed on the public drive shaft outside, second transmission gear is meshed with first transmission gear, second transmission gear is installed on the sleeve driving cylinder outside by the central through-hole of itself, one end of the sleeve clamping piece for clamping the sleeve is connected with one end of the sleeve driving cylinder, spiral and for the circumferential one circle head-to-tail closed loop connection's guide groove is equipped on the circumferential outer wall of the piston core driving cylinder, one end of the piston core driving pin is placed in the guide groove, the first piston core drive shaft and the second piston core drive shaft that are parallel are connected with the piston core driving pin, the first piston core drive shaft and the second piston core drive shaft are respectively installed on the grinding support and can axially move, one end of the first piston core drive shaft is connected with one end of the first piston core positioning shaft and passes through the central through-hole of the sleeve driving cylinder, one end of the second piston core positioning shaft is connected with one end of the second piston core drive shaft, the center line of the first piston core positioning shaft coincides with the center line of the second piston core positioning shaft, and the other end of the two is used to be connected with the two ends of the piston core and passes through the central through-hole of the sleeve clamping piece.

[0009] As a preferred, in order to synchronize grinding of two sets of products, two said transmission gears, one said sleeve driving cylinder, one said sleeve clamping member, one said first piston core positioning shaft and one said second piston core positioning shaft together constitute a driving assembly, the piston core and sleeve automatic grinding device for the molecular sieve oxygen system comprises two said driving assemblies, two said driving assemblies are respectively located at the two ends of the outside of the piston core driving cylinder, in the first said driving assembly, one end of the first piston core positioning shaft is connected with one end of the first piston core driving shaft, one end of the second piston core positioning shaft is connected with one end of the second piston core driving shaft through a connecting plate; in the second said driving assembly, one end of the second piston core positioning shaft is connected with the other end of the first piston core driving shaft, one end of the first piston core positioning shaft is connected with the other end of the second piston core driving shaft through a connecting plate.

[0010] As a preferred, in order to facilitate the better cooperation of the two driving assemblies, both ends of the first piston core driving shaft are respectively provided with screw holes, in the two said driving assemblies, the other end of the first piston core positioning shaft is provided with a positioning groove, and the other end of the second piston core positioning shaft is provided with a connecting screw rod; in the first said driving assembly, one end of the first piston core positioning shaft is placed in the screw hole of one end of the first piston core driving shaft and is threadedly connected; in the second said driving assembly, one end of the second piston core positioning shaft is placed in the screw hole of the other end of the first piston core driving shaft and is threadedly connected.

[0011] As a preferred, in order to facilitate reliable clamping of the sleeve, the sleeve clamping member comprises a first clamping cylinder, a conical pressing cylinder and a second clamping cylinder, one end of the circumferential inner wall of the first clamping cylinder is provided with a boss which is used to block one end of the sleeve, the circumferential inner wall surface of the other end of the first clamping cylinder is a conical surface, and the outer end diameter of the conical surface is larger than the inner end diameter, the circumferential outer wall surface of the conical pressing cylinder is a conical surface, the conical pressing cylinder is placed in the second end of the first clamping cylinder, one end of the circumferential inner wall of the second clamping cylinder is provided with a boss which is used to block the conical pressing cylinder, the second clamping cylinder is sleeved on the second end of the first clamping cylinder and is threadedly connected with the second end of the first clamping cylinder, the center through hole of the first clamping cylinder, the center through hole of the conical pressing cylinder and the center through hole of the second clamping cylinder are coaxial and together form the center through hole of the sleeve clamping member.

[0012] As a preferred, in order to reduce the sliding resistance of the piston core driving pin in the guide groove, the middle part of one end of the piston core driving pin is provided with a convex column, and the end of the convex column is provided with a ball, and the convex column and the ball are both placed in the guide groove.

[0013] As preferred, in order to facilitate the improvement of the integration of the present grinding device to reduce the volume, the piston core and sleeve automatic grinding device for the molecular sieve oxygen system further comprises two bevel gears, the speed reducer and the grinding support are respectively installed on the bottom plate, the driving motor is installed above the speed reducer, the speed reducer is a right-angle speed reducer, the output end of the speed reducer is connected with the center through hole of the first bevel gear, the two bevel gears are connected with each other, and the second bevel gear is sleeved outside one end of the common driving shaft through the center through hole and is fixedly connected.

[0014] As preferred, in order to facilitate the control operation and provide power supply and driving signals for the driving motor, the bottom plate is further provided with a power supply assembly, a driver and an operation panel.

[0015] The present utility model has the advantages of:

[0016] The driving motor drives the common driving shaft to rotate, the common driving shaft drives the sleeve driving cylinder and the piston core driving cylinder to rotate synchronously, the sleeve driving cylinder drives the sleeve clamping piece and the sleeve to rotate, the piston core driving cylinder drives the piston core driving pin to move linearly back and forth, thereby driving the first piston core driving shaft and the second piston core driving shaft to move linearly back and forth, and further driving the first piston core positioning shaft, the second piston core positioning shaft and the piston core to move linearly back and forth, so as to form the working state of continuous rotation of the sleeve and linear reciprocating motion of the piston core, and the piston core is repeatedly ground in the sleeve, thereby realizing the automatic grinding function between the piston core and the sleeve. Since the rotation of the sleeve and the linear reciprocating motion of the piston core are continuous and can be controlled with high precision by mechanical processing, the uniform grinding effect of the piston core on the inner wall of the sleeve can be ensured, the cross section of the finally formed sleeve hole is a regular circle, the grinding quality, forming precision and product qualification rate are significantly improved, the average frequency of a single sleeve product can reach more than 100 times / min, the grinding efficiency and production efficiency are significantly improved, and the efficiency is doubled when two driving assemblies are used, and the effect is more significant. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the front view structural schematic diagram when manually grinding the piston core and the sleeve;

[0018] Figure 2 is one of the perspective views of the piston core and sleeve automatic grinding device for the molecular sieve oxygen system;

[0019] Figure 3 is the second perspective view of the piston core and sleeve automatic grinding device for the molecular sieve oxygen system, and Figure 2 the viewing angle is different and the internal structure of the grinding assembly is shown;

[0020] Figure 4It is the main view sectional view of piston core and sleeve automatic grinding device for molecular sieve oxygen system of the utility model;

[0021] Figure 5 It is Figure 4 The enlarged view of A in the middle;

[0022] Figure 6 It is the main view of piston core driving cylinder and piston core driving pin of piston core and sleeve automatic grinding device for molecular sieve oxygen system of the utility model;

[0023] Figure 7 It is the main view of sleeve clamping piece and sleeve before assembly of piston core and sleeve automatic grinding device for molecular sieve oxygen system of the utility model;

[0024] Figure 8 It is the main view of first piston core positioning shaft, second piston core positioning shaft and piston core before assembly of piston core and sleeve automatic grinding device for molecular sieve oxygen system of the utility model. DETAILED DESCRIPTION

[0025] The utility model is further described below in combination with the drawings:

[0026] As Figures 2-8As shown in the utility model discloses a piston core and sleeve automatic grinding device for molecular sieve oxygen system including driving motor 4, speed reducer 5, grinding assembly 10, the axle of driving motor 4 is connected with the input of speed reducer 5, the grinding assembly includes grinding support (not marked separately in the drawing, grinding support includes external box and internal partition board etc., and the specific structure is according to actual needs to be determined), public drive shaft 23, transmission gear 17, sleeve drive cylinder 16, sleeve clamping piece, piston core drive cylinder 21, piston core drive pin 18, first piston core drive shaft 19, second piston core drive shaft 13, first piston core positioning shaft 14 and second piston core positioning shaft 25, public drive shaft 23 and sleeve drive cylinder 16 are respectively installed on the grinding support through bearing and can rotate freely, the output of speed reducer 5 is connected with one end of public drive shaft 23, first transmission gear 17 and piston core drive cylinder 21 are respectively sleeved on the outside of public drive shaft 23 through the central through-hole of itself, second transmission gear 17 is meshedly connected with first transmission gear 17, second transmission gear 17 is sleeved on the outside of sleeve drive cylinder 16 through the central through-hole of itself, one end of the sleeve clamping piece for clamping sleeve 1 is connected with one end of sleeve drive cylinder 16, the circumferential outer wall of piston core drive cylinder 21 is equipped with the helical and the circumferential one circle head-to-tail closed loop connection's guide groove 20, one end of piston core drive pin 18 is placed in guide groove 20, the first piston core drive shaft and the second piston core drive shaft that are parallel are connected with the piston core drive pin, first piston core drive shaft 19 and second piston core drive shaft 13 are respectively installed on the grinding support and can move axially, one end of first piston core drive shaft 19 is connected with one end of first piston core positioning shaft 14 and passes through the central through-hole of sleeve drive cylinder 16, one end of second piston core positioning shaft 25 is connected with one end of second piston core drive shaft 13, the center line of first piston core positioning shaft 14 coincides with the center line of second piston core positioning shaft 25, and the other end of the two is used to be connected with the both ends of piston core 2 and passes through the central through-hole of the sleeve clamping piece.

[0027] As Figures 2-8 shown, the utility model discloses the following multiple more optimal specific structure:

[0028] In order to carry out synchronous grinding to two sets of products, two transmission gears 17, a sleeve drive cylinder 16, a sleeve clamping piece, a first piston core positioning shaft 14 and a second piston core positioning shaft 25 jointly constitute a drive assembly, the piston core and sleeve automatic grinding device for molecular sieve oxygen system includes two drive assemblies, two drive assemblies are located at the both ends outside of piston core drive cylinder 21 respectively, the first drive assembly ( Figure 3 And Figure 4In the first driving assembly (the left one in the middle of the figure), one end of the first piston core positioning shaft 14 is connected with one end of the first piston core driving shaft 19, and one end of the second piston core positioning shaft 25 is connected with one end of the second piston core driving shaft 13 through the connecting plate 15. Figure 3 and Figure 4 In the second driving assembly (the right one in the middle of the figure), one end of the second piston core positioning shaft 25 is connected with the other end of the first piston core driving shaft 19, and one end of the first piston core positioning shaft 14 is connected with the other end of the second piston core driving shaft 13 through the connecting plate 15.

[0029] In order to facilitate the better cooperation of the two driving assemblies, both ends of the first piston core driving shaft 19 are provided with screw holes, and in the two driving assemblies, the other end of the first piston core positioning shaft 14 is provided with a positioning groove, and the other end of the second piston core positioning shaft 25 is provided with a connecting screw rod; in the first driving assembly, one end of the first piston core positioning shaft 14 is placed in the screw hole at one end of the first piston core driving shaft 19 and is threadedly connected; in the second driving assembly, one end of the second piston core positioning shaft 25 is placed in the screw hole at the other end of the first piston core driving shaft 19 and is threadedly connected.

[0030] In order to facilitate reliable clamping of the sleeve 1, the sleeve clamping member comprises a first clamping cylinder 11, a tapered compression cylinder 24 and a second clamping cylinder 12, one end of the circumferential inner wall of the first clamping cylinder 11 is provided with a boss which is used to block one end of the sleeve 1, the circumferential inner wall surface of the first clamping cylinder 11 near the other end is a tapered surface, and the outer end diameter of the tapered surface is larger than the inner end diameter, the circumferential outer wall surface of the tapered compression cylinder 24 is a tapered surface, the tapered compression cylinder 24 is placed in the second end of the first clamping cylinder 11, one end of the circumferential inner wall of the second clamping cylinder 12 is provided with a boss which is used to block the tapered compression cylinder 24, the second clamping cylinder 12 is sleeved on the outside of the second end of the first clamping cylinder 11 and is threadedly connected with the second end of the first clamping cylinder 11, the central through hole of the first clamping cylinder 11, the central through hole of the tapered compression cylinder 24 and the central through hole of the second clamping cylinder 12 are coaxial and jointly form the central through hole of the sleeve clamping member.

[0031] In order to reduce the sliding resistance of the piston core driving pin 18 in the guide groove 20, a convex column (not marked in the figure) is arranged in the middle of one end of the piston core driving pin 18, and a ball (not marked in the figure) is arranged at the end of the convex column, and the convex column and the ball are both arranged in the guide groove 20.

[0032] To facilitate improved integration and reduced size of the grinding device, the automatic grinding device for piston cores and sleeves in the molecular sieve oxygen system also includes two bevel gears 22. The reducer 5 and the grinding bracket are respectively mounted on the base plate 7. The drive motor 4 is mounted on the reducer 5. The reducer 5 is a right-angle reducer. The output end of the reducer 5 is connected to the central through hole of the first bevel gear 22. The two bevel gears 22 mesh with each other. The second bevel gear 22 is fitted and fixedly connected to one end of the common drive shaft 23 through its own central through hole.

[0033] In order to provide power and drive signals to the drive motor and facilitate control operation, the base plate 7 is also equipped with a power supply assembly 8, a driver 9 and an operation panel 6.

[0034] like Figures 2-8 As shown, in application, the sleeve 1 to be ground is first installed on the sleeve clamping component. The first clamping sleeve 11, the conical clamping sleeve 24, and the second clamping sleeve 12 reliably position the sleeve 1 axially and radially. Then, the first clamping sleeve 11 is connected to the sleeve drive sleeve 16 with screws. The tip of the piston core 2 to be ground is placed in the positioning groove of the first piston core positioning shaft 14. The screw hole end of the piston core 2 is connected to the connecting screw of the second piston core positioning shaft 25. The first piston core positioning shaft 14 and the second piston core positioning shaft 25 are respectively connected to the first piston core drive shaft 19 and the second piston core drive shaft 13, thus completing the installation of two sets of products (one sleeve 1 and one piston core 2 constitute one set of products). Then, the drive motor 4 is started. The rotating shaft of 4 is reduced in speed by the reducer 5 and rotated by the two bevel gears 22, which then drive the common drive shaft 23 to rotate. The common drive shaft 23 drives the sleeve drive cylinder 16 and the piston core drive cylinder 21 to rotate synchronously. The sleeve drive cylinder 16 drives the sleeve clamping part and the sleeve 1 to rotate. The piston core drive cylinder 21 drives the piston core drive pin 18 to perform reciprocating linear motion, thereby driving the first piston core drive shaft 19 and the second piston core drive shaft 13 to perform reciprocating linear motion, which in turn drives the first piston core positioning shaft 14, the second piston core positioning shaft 25 and the piston core 2 to perform reciprocating linear motion. This forms a working state in which the sleeve 1 rotates continuously and the piston core 2 performs reciprocating linear motion. The piston core 2 is repeatedly ground in the sleeve 1, thereby realizing the automatic grinding function between the piston core 2 and the sleeve 1.

[0035] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A piston core and sleeve auto-grind device for a molecular sieve oxygen system comprising a drive motor and a speed reducer, characterized in that: The driving motor shaft is connected with the input end of the speed reducer, and the grinding assembly comprises a grinding support, a common driving shaft, a transmission gear, a sleeve driving cylinder, a sleeve clamping piece, a piston core driving cylinder, a piston core driving pin, a first piston core driving shaft, a second piston core driving shaft, a first piston core positioning shaft and a second piston core positioning shaft. The common driving shaft and the sleeve driving cylinder are respectively installed on the grinding support through bearings and can freely rotate. The output end of the speed reducer is connected with one end of the common driving shaft. The first transmission gear and the piston core driving cylinder are respectively sleeved outside the common driving shaft through their own central through holes. The second transmission gear is in meshing connection with the first transmission gear and is sleeved outside the sleeve driving cylinder through its own central through hole. One end of the sleeve clamping piece for clamping the sleeve is connected with one end of the sleeve driving cylinder. A spiral and circumferential one-circle closed-loop connected guide groove is arranged on the circumferential outer wall of the piston core driving cylinder. One end of the piston core driving pin is arranged in the guide groove. The first piston core driving shaft and the second piston core driving shaft which are parallel to each other are respectively connected with the piston core driving pin. The first piston core driving shaft and the second piston core driving shaft are respectively installed on the grinding support and can axially move. One end of the first piston core driving shaft is connected with one end of the first piston core positioning shaft and passes through the central through hole of the sleeve driving cylinder. One end of the second piston core positioning shaft is connected with one end of the second piston core driving shaft. The center line of the first piston core positioning shaft coincides with the center line of the second piston core positioning shaft, and the other ends of the two are connected with the two ends of the piston core and pass through the central through hole of the sleeve clamping piece.

2. The piston core and sleeve auto-grind apparatus for a molecular sieve oxygen system of claim 1, wherein: The two transmission gears, the sleeve driving cylinder, the sleeve clamping piece, the first piston core positioning shaft and the second piston core positioning shaft jointly form a driving assembly. The piston core and sleeve automatic grinding device for the molecular sieve oxygen system comprises two driving assemblies. The two driving assemblies are respectively located outside the two ends of the piston core driving cylinder. In the first driving assembly, one end of the first piston core positioning shaft is connected with one end of the first piston core driving shaft, and one end of the second piston core positioning shaft is connected with one end of the second piston core driving shaft through a connecting plate. In the second driving assembly, one end of the second piston core positioning shaft is connected with the other end of the first piston core driving shaft, and one end of the first piston core positioning shaft is connected with the other end of the second piston core driving shaft through a connecting plate.

3. The piston core and sleeve auto-grind apparatus for a molecular sieve oxygen system of claim 2, wherein: The first piston core drive shaft is provided with screw holes at both ends, one end of the first piston core positioning shaft is placed in the screw hole at one end of the first piston core drive shaft and is threadedly connected, and the other end of the second piston core positioning shaft is provided with a connecting screw rod.

4. The piston core and sleeve auto-grind apparatus for a molecular sieve oxygen system of any of claims 1-3, wherein: The sleeve clamping member comprises a first clamping cylinder, a conical pressing cylinder and a second clamping cylinder, the first clamping cylinder is provided with a boss on the circumferential inner wall of one end of the first clamping cylinder, the boss is used to block one end of the sleeve, the circumferential inner wall surface of the first clamping cylinder near the other end is a conical surface, the outer end diameter of the conical surface is larger than the inner end diameter, the circumferential outer wall surface of the conical pressing cylinder is a conical surface, the conical pressing cylinder is placed in the second end of the first clamping cylinder, the second clamping cylinder is provided with a boss on the circumferential inner wall of one end of the second clamping cylinder, the boss is used to block the conical pressing cylinder, the second clamping cylinder is sleeved on the second end of the first clamping cylinder and is threadedly connected with the second end of the first clamping cylinder, the central through hole of the first clamping cylinder, the central through hole of the conical pressing cylinder and the central through hole of the second clamping cylinder are coaxial and jointly form the central through hole of the sleeve clamping member.

5. The piston core and sleeve auto-grind apparatus for a molecular sieve oxygen system of any of claims 1-3, wherein: The piston core drive pin is provided with a convex column in the middle of one end, and a ball is installed at the end of the convex column, and the convex column and the ball are placed in the guide groove.

6. The piston core and sleeve auto-grind apparatus for a molecular sieve oxygen system of any of claims 1-3, wherein: The piston core and sleeve automatic grinding device for a molecular sieve oxygen system further comprises two bevel gears, the speed reducer and the grinding support are respectively installed on the bottom plate, the driving motor is installed above the speed reducer, the speed reducer is a right-angle speed reducer, the output end of the speed reducer is connected with the central through hole of the first bevel gear, the two bevel gears are connected with each other, and the second bevel gear is sleeved on one end of the common drive shaft outside through the central through hole and is fixedly connected.

7. The piston core and sleeve auto-grind apparatus for a molecular sieve oxygen system of claim 6, wherein: The bottom plate is further provided with a power supply assembly, a driver and an operation panel.

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