CN117001313A - Plunger pair assembling device and method - Google Patents
Plunger pair assembling device and method Download PDFInfo
- Publication number
- CN117001313A CN117001313A CN202311171518.7A CN202311171518A CN117001313A CN 117001313 A CN117001313 A CN 117001313A CN 202311171518 A CN202311171518 A CN 202311171518A CN 117001313 A CN117001313 A CN 117001313A
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- Prior art keywords
- half die
- cavity
- plunger
- fixed half
- half mould
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 22
- 230000000694 effects Effects 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a plunger pair assembling device which comprises a ball packing device, wherein the ball packing device comprises a guide seat, a fixed half die, a movable half die and an elastic piece, a boss is arranged on the guide seat, the fixed half die and the movable half die are arranged in grooves matched with the boss, the fixed half die and the movable half die are oppositely arranged, the fixed half die is provided with a first cavity, the movable half die is provided with a second cavity, after the fixed half die and the movable half die are completely attached, the shape of an inner cavity formed by the first cavity and the second cavity is consistent with that of a plunger pair, the guide seat is provided with a seat hole, the seat hole is correspondingly arranged with the inner cavity, and the elastic piece is arranged in the seat hole. The plunger pair assembling device and the plunger pair ball wrapping method can greatly improve operability and stability of plunger pair ball wrapping, simplify ball wrapping process flow and reduce manufacturing cost.
Description
Technical Field
The invention relates to the technical field of miniature hydraulic plunger pumps, in particular to a plunger pair assembling device and method.
Background
At present, the domestic miniature hydraulic plunger pump technology rapidly develops, and is widely applied to occasions with very limited space, volume and weight, and the plunger pair size is very small due to the small volume and displacement, so that the requirement cannot be met by the traditional compacting and rolling-loosening device, and a simple, reliable and convenient ball packing assembly is required to be designed to meet the ball packing requirement of a small-size plunger pair.
The process means of compaction and rolling loosening during the process of the plunger pair ball wrapping is generally adopted, a set of compaction device and a set of rolling loosening device are needed, the compaction device adopts a split type structure, an inner hole is processed into a spherical surface, a hydraulic press is adopted to press down and compact, so that the sliding shoe is jointed with the spherical surface of the inner hole of the device in the downward moving process, and the inner spherical surface of the sliding shoe is deformed under the action of the spherical surface, so that the inner spherical surface of the sliding shoe is tightly jointed. The plunger and the sliding shoe cannot rotate after the pressing by adopting the pressing mode of pressing the ball by the pressing machine, and the equipment is required to press the outer circular opening of the sliding shoe by adopting the rolling and loosening device, so that the sliding shoe slightly deforms again and can flexibly rotate after loosening with the plunger ball head. However, this method is not suitable for the plunger pair packing ball of the micro plunger pump, and the sliding shoe of the micro plunger pump is small and thin, so that the sliding shoe is easy to deform or break when being pressed down by a press machine, and the parts are scrapped.
In addition, there is a simple and easy split type package ball device, by adjusting the gasket, the sleeve, the holding ring, the spring housing, the bottom plate, the spring holder, spring etc. is constituteed, this kind of structure is comparatively complicated, and the shoe is under when packing the ball, the press machine is plunger downwards, until the press machine contacts when adjusting the gasket, take out and see package ball effect, if not good, still need change the thickness of adjusting the gasket, press mounting again, it is effectual to pack the ball, if first gasket is too thin, the plunger pushes down excessively, the plunger bulb just probably presses the deformation with shoe ball socket department, the gasket is too thick, plunger and shoe clearance just are very big. In this way, the operation is more complex, and the requirement for adjusting the thickness of the gasket is higher. However, there are individual differences in the plunger and shoe sizes during machining. Poor selection of the adjusting gasket is likely to cause the shoe to crush or not tightly pack the ball to influence the service life of the plunger pair. Moreover, it is not suitable for mass production and lacks stability because it requires constant replacement of the adjusting shims.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides the plunger pair assembling device and method which are high in consistency of ball wrapping effect and simple and convenient to operate.
The specific technical scheme is as follows: the utility model provides a vice assembly quality of plunger, includes package ball device, package ball device includes the guide holder, fixed half, movable half and elastic component, be equipped with the boss on the guide holder, fixed half and movable half locate with the recess of boss joining in marriage, fixed half and movable half set up relatively, and fixed half has first cavity, and movable half has the second cavity, and fixed half and movable half laminate completely the back, and the inner chamber shape that first cavity and second cavity formed is unanimous with the plunger pair, the guide holder has the seat hole, and the seat hole corresponds the setting with the inner chamber, and the elastic component sets up in the seat hole.
As the preferable technical scheme, the boss is a T-shaped boss, and the groove is a T-shaped groove.
As a preferable technical scheme, the number of the bosses is at least two, and the number of the grooves of the fixed half die and the movable half die is the same as that of the bosses.
As the preferable technical scheme, the fixed half mould is fixedly connected with the guide seat.
As the preferable technical scheme, the first cavity and the second cavity are symmetrically arranged, the first cavity and the second cavity are respectively arranged on the vertical planes of the fixed half die and the movable half die, and the grooves are formed in the horizontal bottom surfaces of the fixed half die and the movable half die.
As the preferable technical scheme, the guide seat is arranged on the clamp, and the clamp of the clamp drives the movable half die.
As an optimal technical scheme, a pressing shaft is arranged above the fixed half die.
As the preferable technical scheme, the guide seat, the fixed half die and the movable half die are all subjected to vacuum quenching treatment, so that the hardness of the guide seat reaches HRC58-62, all sides of the guide seat are ground, the grooves are cut by adopting a precise numerical control slow wire cutting process, the surface roughness of the grooves reaches Ra0.4, and the tolerance is controlled to be 0-0.005.
The application method of the plunger pair assembly device comprises the following steps:
s100: placing the ball packing device on a clamp plane, and fixing the half mould to be tightly attached to the jaw;
s200: placing the clamp and the fixed half mould on a bench drill platform, enabling the holes of the ball packing device to be approximately aligned with the main shaft of the bench drill, and fixing the clamp;
s300: pulling the movable half mould to a proper position, putting the plunger into the hole of the ball packing device, making the plunger ball upwards, putting the sliding shoe into the upper end of the hole of the ball packing device, and enabling the inner end surface of the sliding shoe to be flatly attached to the inner end surface of the hole spigot;
s400: moving the movable half mould to enable the movable half mould to slide towards the center along the T-shaped boss and tightly cling to the excircle of the sliding shoe;
s500: the clamp is fastened, and the movable half mould moves towards the center by slow force.
As a preferable technical scheme, after the step S500, placing the small flat plate with two parallel sides on the upper plane of the fixed half die, and pressing down the main shaft of the operating bench drill until the flat plate is pressed to be completely attached to the upper plane of the fixed half die; pulling the clamp again, and slowly applying force until the movable half die is completely attached to the plane of the fixed half die; the clamp is released, the movable half mould is moved away, and the packaged plunger pair is taken out of the device.
The invention has the technical effects that: the plunger pair assembling device and the plunger pair ball wrapping method can greatly improve operability and stability of plunger pair ball wrapping, simplify ball wrapping process flow and reduce manufacturing cost.
Drawings
Fig. 1 is a schematic view of a plunger pair assembling device according to an embodiment of the present invention.
Fig. 2 is another schematic view of a plunger pair assembling device according to an embodiment of the present invention.
Fig. 3 is a schematic view of a guide holder according to an embodiment of the present invention.
Fig. 4 is a schematic view of a stationary mold half of an embodiment of the invention.
Fig. 5 is a schematic view of a movable mold half of an embodiment of the present invention.
Fig. 6 is a schematic view of a clamp according to an embodiment of the invention.
Fig. 7 is an enlarged view of section a of fig. 6 in accordance with the present invention.
FIG. 8 is a schematic view of a compact of an embodiment of the present invention.
Detailed Description
The essential features and advantages of the invention will be further elucidated with reference to the examples, without however being limited to the embodiments listed.
As shown in fig. 1 to 7, a plunger pair assembling device of the present embodiment includes a ball wrapping device 100, where the ball wrapping device 100 includes a guide holder 1, a fixed half mold 2, a movable half mold 3 and an elastic member 4, a boss 11 is disposed on the guide holder 1, and the fixed half mold 2 and the movable half mold 3 are disposed in a groove 20 matched with the boss 11. The fixed half mould 2 and the movable half mould 3 are oppositely arranged, the fixed half mould 2 is provided with a first cavity 21, the movable half mould 3 is provided with a second cavity 31, after the fixed half mould 21 is completely attached to the movable half mould 31, the shape of an inner cavity 5 formed by the first cavity 21 and the second cavity 31 is consistent with that of the plunger pair 6, and a hole 51 of the inner cavity 5 is positioned at the top of the ball packing device 100. The guide seat 1 is provided with a seat hole 12, the seat hole 12 is arranged corresponding to the inner cavity 5, and the elastic piece 4 is arranged in the seat hole. In the above technical scheme, the function of the guide holder is a positioning and centering function, in this embodiment, the boss is a T-shaped boss, and the groove is a T-shaped groove. The fixed half mould and the movable half mould are designed to be matched with a T-shaped groove and a T-shaped boss of the guide seat in a primary-secondary mode, so that the self-centering effect is achieved. The fixed half mould 2 is fixedly connected with the guide seat 1, the fixed half mould 2 is tightly fixed on the guide seat 1 by using screws, and the movable half mould 3 is positioned by a T-shaped groove and can smoothly slide along the guide seat 1 until being completely attached to the plane of the fixed half mould. The seat hole in the middle of the guide seat is provided with an elastic piece, the elastic piece in the embodiment is a pre-tightening spring, after the fixed half die is completely attached to the movable half die, an inner cavity formed by the elastic piece is consistent with the plunger pair, when the ball is wrapped, the pre-tightening spring is arranged in the seat hole of the guide seat, the plunger 10 and the sliding shoe 30 are respectively arranged in the inner cavity 5, the lower end face of the plunger 10 is attached to the upper end face of the spring, the pre-tightening spring plays an upward pre-tightening role, the plunger 10 is pushed upwards by the spring, and the ball head is always attached to the ball socket of the sliding shoe 30. The movable half mould moves along the boss of the guide seat and gradually approaches the center, the lateral force of the excircle of the sliding shoe ball socket and the clamping of the two half mould ball sockets gradually deform and close under the clamping force, and at the moment, the pre-tightening spring always gives upward force to the plunger so that the plunger ball head is always attached to the sliding shoe ball socket, does not move downwards and is separated from the sliding shoe. Through the technical scheme, in the whole ball packing process, the sliding shoes and the plunger are not subjected to hydraulic pressure, and the sliding shoes are well positioned, so that the sliding shoes do not deform under stress on the plane, and the ball packing success rate is high. After the ball is packed, the ball can flexibly rotate only by holding the plunger with hands and shaking for a moment, and the ball loosening device is not needed to be used for loosening the ball. And the gap is within 0.01-0.02 mm.
In this embodiment, there are at least two bosses 11, and the number of grooves of the fixed mold half 2 and the movable mold half 3 is the same as the number of bosses, so that the movement of the movable mold half is smoother, and two bosses are provided in this embodiment. The first cavity 21 and the second cavity 31 are symmetrically arranged, the first cavity 21 and the second cavity 31 are respectively arranged on the vertical planes 22 of the fixed half mold 2 and the movable half mold 3, the first cavity and the second cavity are integrally arranged with the fixed half mold and the movable half mold, and the groove 20 is arranged on the horizontal bottom surfaces 23 of the fixed half mold and the movable half mold. The guide seat 1 is arranged on the clamp 7, and the clamp 71 of the clamp 7 drives the movable half mold 3. The pressing shaft 8 is arranged above the fixed half die 2, the clamp of the embodiment is a precision vice, and the pressing shaft is a main shaft of the bench drill 200. The fixed half mold 2 and the movable half mold 3 are clamped by using a precision vice, and the vice is placed on the bench drill platform and the center of the vice is approximately aligned with the bench drill main shaft. In the clamping process, a sliding shoe can move upwards, a small flat plate with two parallel sides is placed on the upper plane of the half mould, a bench drill spindle is manually operated to press downwards until the flat plate is completely attached to the upper plane of the half mould, then a vice is pulled again, force is slowly applied until the movable half mould is completely attached to the plane of the fixed half mould, the vice is released, and the wrapped plunger pair is taken out of the device.
Furthermore, in order to obtain a better ball wrapping effect, the guide holder 1, the fixed half die 2 and the movable half die 3 are subjected to vacuum quenching treatment to ensure that the hardness of the guide holder reaches HRC58-62, all sides of the guide holder 1 are ground, the grooves are cut by adopting a precise numerical control slow wire cutting process, the surface roughness of the grooves reaches Ra0.4, and the tolerance is controlled to be 0-0.005. The fixed half mould and the movable half mould are used as integral parts to be processed before quenching, an inner cavity Kong Yuzuan is reserved, the allowance is 0.5mm, each plane is precisely ground after quenching, then wire cutting is performed to cut the plane, after the fixed half mould and the movable half mould are assembled oppositely, a T-shaped groove is precisely cut by slow wire cutting, the surface roughness reaches Ra0.4, the tolerance of the groove is controlled to be +0.005- +0.01, and the fit clearance between the fixed half mould and a T-shaped boss of a guide seat is ensured to be within 0.005-0.01 mm. And then the fixed half mould and the movable half mould are arranged on the guide seat, an inner spherical surface is processed by adopting a precise electric spark device, the roughness Ra0.4 of the inner spherical surface is ensured, and the clearance between the spherical diameter of the inner spherical surface and the outer circle of the chemical ball socket is 0.008-0.012mm.
The application method of the plunger pair assembly device comprises the following steps: s100: placing the ball packing device 100 on the plane of the clamp 7, and fixing the half mold to be tightly attached to the clamp opening 72; s200: placing the clamp 7 and the fixed half mould 2 on a platform of the bench drill 200, enabling the holes of the ball packing device 100 to be approximately aligned with the main shaft of the bench drill, and fixing the clamp; s300: pulling the movable half mould 3 to a proper position, putting the plunger 10 into a hole of the ball packing device, making the plunger ball upwards, putting the sliding shoe into the upper end of the hole of the ball packing device, and enabling the inner end surface of the sliding shoe to be flatly attached to the inner end surface of the hole spigot; s400: moving the movable half mould 3 to enable the movable half mould 3 to slide towards the center along the T-shaped boss and cling to the excircle of the sliding shoe; s500: the clamp is fastened, and the movable half mould moves towards the center by slow force. Through the technical scheme, under the clamping force, the lateral force of the outer circle of the sliding shoe ball socket and the clamping of the half-mold ball socket gradually deform to close, and at the moment, the pre-tightening spring always gives the plunger an upward pre-tightening force, so that the plunger ball head is attached to the sliding shoe ball socket.
In the clamping process, when the sliding shoes move upwards, after step S500, pressing blocks 40 (shown in FIG. 8) with two parallel sides are placed on the upper plane of the fixed half mold 2, and the main shaft of the operating bench drill is pressed down until the flat plate is pressed to be completely attached to the upper plane of the fixed half mold; pulling the clamp again, and slowly applying force until the movable half die is completely attached to the plane of the fixed half die; the clamp is released, the movable half mould is moved away, and the packaged plunger pair is taken out of the device.
The plunger pair assembling device and method are simple and reliable in operation and low in cost, and can be applied to a plunger pair ball packing device with the plunger diameter of less than 10mm of a miniature plunger pump. The technical problem that the end face of the sliding shoe is easily damaged by the existing press-fitting ball wrapping tool of the press machine is solved, the utilization rate and efficiency of parts are effectively improved, and the economical efficiency is improved.
It should be noted that the foregoing description of the preferred embodiments is merely illustrative of the technical concept and features of the present invention, and is not intended to limit the scope of the invention, as long as the scope of the invention is defined by the claims and their equivalents. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a vice assembly quality of plunger, its characterized in that, including package ball device, package ball device includes the guide holder, fixed half mould, activity half mould and elastic component, be equipped with the boss on the guide holder, fixed half mould and activity half mould locate with the recess of boss joining in marriage, fixed half mould and activity half mould set up relatively, and fixed half mould has first cavity, and the activity half mould has the second cavity, and fixed half mould and activity half mould laminate completely the back, and the inner chamber shape that first cavity and second cavity formed is unanimous with the plunger pair, the guide holder has the seat hole, and the seat hole corresponds the setting with the inner chamber, and the elastic component sets up in the seat hole.
2. The plunger pair assembling device of claim 1, wherein the boss is a T-shaped boss and the groove is a T-shaped groove.
3. The plunger pair assembling device according to claim 2, wherein the boss is at least two, and the number of grooves of the fixed half mold and the movable half mold is the same as the number of bosses.
4. The plunger pair assembling device according to claim 1, wherein the fixed half die is fixedly connected with the guide holder.
5. The plunger pair assembling device according to claim 1, wherein the first cavity and the second cavity are symmetrically arranged, the first cavity and the second cavity are respectively arranged on vertical planes of the fixed half die and the movable half die, and the groove is formed in horizontal bottom surfaces of the fixed half die and the movable half die.
6. The plunger pair assembling device according to claim 1, wherein the guide seat is arranged on a clamp, and a clamp of the clamp drives the movable half die.
7. The plunger pair assembling device according to claim 6, wherein a pressing shaft is provided above the fixed half die.
8. The plunger pair assembling device according to claim 1, wherein the guide seat, the fixed half die and the movable half die are subjected to vacuum quenching treatment to ensure that the hardness of the guide seat reaches HRC58-62, the guide seat is subjected to grinding processing on each surface, the groove is subjected to precise numerical control slow wire cutting processing, the surface roughness of the groove reaches Ra0.4, and the tolerance is controlled to be 0-0.005.
9. The application method of the plunger pair assembly device is characterized by comprising the following steps of:
s100: placing the ball packing device on a clamp plane, and fixing the half mould to be tightly attached to the jaw;
s200: placing the clamp and the fixed half mould on a bench drill platform, enabling the holes of the ball packing device to be approximately aligned with the main shaft of the bench drill, and fixing the clamp;
s300: pulling the movable half mould to a proper position, putting the plunger into the hole of the ball packing device, making the plunger ball upwards, putting the sliding shoe into the upper end of the hole of the ball packing device, and enabling the inner end surface of the sliding shoe to be flatly attached to the inner end surface of the hole spigot;
s400: moving the movable half mould to enable the movable half mould to slide towards the center along the T-shaped boss and tightly cling to the excircle of the sliding shoe; s500: the clamp is fastened, and the movable half mould moves towards the center by slow force.
10. The method of claim 9, wherein after step S500, the two-sided parallel small plate is placed on the upper plane of the fixed half die, and the bench drill spindle is pressed down until the plate is pressed to be completely fitted with the upper plane of the fixed half die; pulling the clamp again, and slowly applying force until the movable half die is completely attached to the plane of the fixed half die; the clamp is released, the movable half mould is moved away, and the packaged plunger pair is taken out of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311171518.7A CN117001313A (en) | 2023-09-11 | 2023-09-11 | Plunger pair assembling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311171518.7A CN117001313A (en) | 2023-09-11 | 2023-09-11 | Plunger pair assembling device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117001313A true CN117001313A (en) | 2023-11-07 |
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ID=88565696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311171518.7A Pending CN117001313A (en) | 2023-09-11 | 2023-09-11 | Plunger pair assembling device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117001313A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117696760A (en) * | 2024-02-18 | 2024-03-15 | 常州斯比达自动化设备有限公司 | Numerical control plunger assembly closing-in device |
-
2023
- 2023-09-11 CN CN202311171518.7A patent/CN117001313A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117696760A (en) * | 2024-02-18 | 2024-03-15 | 常州斯比达自动化设备有限公司 | Numerical control plunger assembly closing-in device |
| CN117696760B (en) * | 2024-02-18 | 2024-04-23 | 常州斯比达自动化设备有限公司 | Numerical control plunger assembly closing-in device |
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