CN202479840U - Pressing mechanism of pushing cylinder - Google Patents
Pressing mechanism of pushing cylinder Download PDFInfo
- Publication number
- CN202479840U CN202479840U CN2012200853602U CN201220085360U CN202479840U CN 202479840 U CN202479840 U CN 202479840U CN 2012200853602 U CN2012200853602 U CN 2012200853602U CN 201220085360 U CN201220085360 U CN 201220085360U CN 202479840 U CN202479840 U CN 202479840U
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- CN
- China
- Prior art keywords
- push rod
- pushes away
- cylinder
- down mechanism
- holddown spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a pressing mechanism of a pushing cylinder. The pressing mechanism comprises a thrust piston and an ejector rod, wherein the ejector rod is pushed by the thrust piston; a return spring is sheathed on the outer edge of the ejector rod; and a pressing spring is padded between the thrust piston and the ejector rod. When the pressing mechanism of the pushing cylinder is used for eliminating nondeterminacy and errors of the gap direction when two pins on one surface are positioned, a floating pushing cylinder is formed by a structural form that the pressing spring pushes the ejector rod, so that not only is the pressing force generated at the ejector rod constant, but also the large impact force from the pushing cylinder is reduced into constant and mild thrust generated by constant compressive deformation of the spring.
Description
Technical field
The utility model relates to a kind of cylinder hold-down mechanism that pushes away.
Background technology
Hydraulic pressure pushes away cylinder and is used to carry out the location of workpiece or compress through regular meeting, when for example adopting the plane and two pits positioning form to process a clutch housing, owing to require very high to the position degree; And for smooth clamping; Necessarily have the gap about 0.01-0.02mm between alignment pin and the locating hole, and this gap retrodeviates from direction in workpiece location and has uncertainty, is prone to cause the position degree of workpiece uncertain; Debug difficulties is prone to take place deviation.Therefore in processing during, behind the plane and two pits location, uncertain for eliminating the position degree that this flying height produces such as demanding parts of position degree such as this clutch housings; Usually adopt the hydraulic pressure standard to push away cylinder and promote part; To locate the gap and be fixed on a direction, so that adjustment improves precision.It is specifically as shown in Figure 1 that this hydraulic pressure pushes away cylinder structure; Hydraulic oil is along getting into plunger shaft shown in the arrow among the figure; Promoting piston 700 moves right; The front portion of piston 700 is pushing push rod 720 and is travelling forward, and is arranged with return spring 710 with resetting after making things convenient for piston 700 and pushing each time in the outer rim of push rod 720, and wherein a side of return spring 710 is resisted against on the boss 721 of push rod 720 outer rims protrusion.
Though adopting above-mentioned standard to push away cylinder carries out Work-sheet pressing and can eliminate gap, direction uncertainty and the error that plane and two pits when location produces; And compact conformation; Convenient mounting and clamping; The impulsive force that is produced when this pushes away cylinder working but maximum problem is is excessive, can cause adverse influence to workpiece, and this impulsive force might damage workpiece.
The utility model content
The utility model technical problem to be solved be to provide a kind of can effectively cushion Work-sheet pressing the time hydraulic pressure push away the enormous impact power of cylinder, help protecting the be positioned hydraulic pressure of workpiece to push away cylinder.
Its technical problem to be solved can be implemented through following technical scheme.
A kind of cylinder hold-down mechanism that pushes away comprises a thrust piston and the push rod that pushes through said thrust piston, outer rim socket one returning spring of said push rod, and its characteristics are that pad is provided with an elastomeric element between said thrust piston and said push rod.
As the further improvement of present technique scheme, said elastomeric element is a holddown spring.
Also as the further improvement of present technique scheme; Said holddown spring is placed in the inner chamber of a slide block; Said thrust piston and said slide block connect; One end of said holddown spring is connected on the inwall of said inner chamber, and the other end of said holddown spring is connected on the formed boss of said push rod outer rim.
As one of preferred embodiment of the utility model; Along said push rod advance and retreat direction; The lumen openings position of said slide block is provided with one and gets into the opening plug that the inner chamber depth-adjustment saves; Said opening offers the through hole that supplies the local body of rod of said push rod to pass through beyond the Great Wall, and keeps said boss to be resisted against the end that said opening plug is positioned at inner chamber one side through the effect of said holddown spring.
In addition, said opening plug can adopt with said slide block and be threaded.
Also as the further improvement of present technique scheme, the said cylinder that pushes away is a hydraulic jack.
When adopting gap, direction uncertainty that pushing away of technique scheme produce when the cylinder hold-down mechanism is used to eliminate the plane and two pits location and error; The version that its holddown spring promotes push rod has formed a kind of unsteady cylinder that pushes away; The thrust that not only makes the push rod place produce is constant, and will be reduced to constant, the mild thrust that is produced by the distortion of spring constant compression from the enormous impact power that pushes away cylinder.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model being done one specifies.
Fig. 1 is the existing structural representation that pushes away the cylinder hold-down mechanism;
Fig. 2 pushes away the structural representation of cylinder hold-down mechanism for the utility model;
Fig. 3 is for originally pushing away the user mode sketch map of cylinder hold-down mechanism;
Among the figure: 100; 720---push rod 110; 130; 721---boss 120---the body of rod 140---body of rod afterbody 200---adjusting nut 210---through hole 220---end 310---returning spring 320---holddown spring 400---slide-bar 410---inner chamber 420---outer wall 430---inwall 500------plunger shaft 600---retaining wall 700---piston 710---return spring 800---workpiece 810 that push away cylinder 510; 820---alignment pin
The specific embodiment
The cylinder hold-down mechanism that pushes away as shown in Figure 2; Hydraulic pressure pushes away cylinder 500 and controls it to left movement through hydraulic oil along the injection of the direction of arrow among the figure; The head abuts that pushes away cylinder 500 is on the outer wall 420 of slide-bar 400; Whole slide-bar 400 is seated in also can be along plunger shaft 500 left and right sides slippages in the plunger shaft 510; Putting the afterbody of holddown spring 320 and push rod 100 in the inner chamber 410 of slide-bar 400, one of them adjusting nut 200 that can regulate inner chamber 410 spaces sizes (referring to left and right sides width here) links to each other with the inwall of slide-bar 400 with the form that is threaded, and then the opening part in inner chamber 410 left sides forms an adjustable spacing gag of feeding depth that gets into inner chamber; The centre of adjusting nut 200 offers through hole 210, and wherein one section body of rod 120 of push rod 100 passes through hole 210, and spacing by means of the annular boss 130 of protrusion push rod outer rim, and boss 130 and body of rod afterbody 140 are placed in the inner chamber 410; Wherein holddown spring 320 is set on the body of rod afterbody 140, and its left end is resisted against on the annular boss 130, and right-hand member is resisted against on the inwall 430 of inner chamber 410; The left end of boss 130 can join with the right-hand end 220 of adjusting nut 200 through the resilient force of holddown spring 320 and be close together.
Push away cylinder 500 and do the time spent; Transmission through slide-bar 400; Power is applied the right side of holddown spring 320 and is delivered on the boss 130 by means of its elasticity, and then promotes whole push rod 100 towards shifting left, because at push rod 100 with push away between the cylinder 500 pad and established holddown spring 320; Therefore make that the thrust that is applied is flexible more, the destruction of avoiding greater impact power that workpiece is caused.
Equally; The demand that the state of starting from resets; Also be provided with returning spring 310 in push rod 100 left sides, returning spring 310 is set in the outer rim of push rod 100, and its two ends are connected to respectively on retaining wall 600 and the boss 110; The effect in boss 110 left sides through 310 pairs of protrusion push rods of returning spring outer rim makes that push rod 110 can return.
In addition, the size that can pass through to regulate the screw thread feeding depth of adjusting nut 200 and then adjust inner chamber 410, and then the tensioning degree of adjusting holddown spring 320.Equally, holddown spring 320 also can adopt other elastomeric elements with shock-absorbing capacity to substitute.
Said structure has formed one in fact and has floated and to push away cylinder, and its operation principle is following:
When hydraulic oil gets into cylinder body, push away cylinder 500 and advance, promote the inner holddown spring 320 of slide-bar 400 promotions thereby push away cylinder 500, after holddown spring 320 is compressed, compression force pushing mandril 100 top tight workpieces of generation, at this moment returning spring 310 is also compacted.After hydraulic oil withdrawed from, push rod 100 resetted under the restoring force effect of returning spring 310.The thrust size of push rod/push rod is that because the constant pressure of hydraulic oil, so the thrust that holddown spring 320 is applied also is constant, therefore, push rod/push rod also is constant to the thrust of workpiece by the flexible length decision of holddown spring 320.And holddown spring and returning spring play the effect that buffering pushes away the cylinder impulsive force.
Be illustrated in figure 3 as the application that this pushes away the cylinder hold-down mechanism, workpiece 800 is accomplished the plane and two pitses location through alignment pin 810 and 820, and by means of the effect of the push rod 100 of this mechanism, the push-tight part is eliminated unidirectional gap.Through using above-mentioned floating to push away cylinder, the gap, direction that produces when eliminating the location is uncertain.Use holddown spring and returning spring can alleviate effectively simultaneously from the excessive impulsive force that pushes away cylinder.Effectively realize the effect of positioning and clamping, improve the clamping quality.The part processing dimensionally stable, qualification rate is high.
Claims (6)
1. one kind pushes away the cylinder hold-down mechanism, comprises a thrust piston and the push rod that pushes through said thrust piston, and outer rim socket one returning spring of said push rod is characterized in that, pad is provided with an elastomeric element between said thrust piston and said push rod.
2. the cylinder hold-down mechanism that pushes away according to claim 1 is characterized in that said elastomeric element is a holddown spring.
3. the cylinder hold-down mechanism that pushes away according to claim 2; It is characterized in that; Said holddown spring is placed in the inner chamber of a slide block; Said thrust piston and said slide block connect, and an end of said holddown spring is connected on the inwall of said inner chamber, and the other end of said holddown spring is connected on the formed boss of said push rod outer rim.
4. the cylinder hold-down mechanism that pushes away according to claim 3; It is characterized in that; Along said push rod advance and retreat direction; The lumen openings position of said slide block is provided with one and gets into the opening plug that the inner chamber depth-adjustment saves, and said opening offers the through hole that supplies the local body of rod of said push rod to pass through beyond the Great Wall, and keeps said boss to be resisted against the end that said opening plug is positioned at inner chamber one side through the effect of said holddown spring.
5. the cylinder hold-down mechanism that pushes away according to claim 4 is characterized in that said opening plug is threaded with said slide block.
6. the cylinder hold-down mechanism that pushes away according to claim 1 is characterized in that, the said cylinder that pushes away is a hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200853602U CN202479840U (en) | 2012-03-08 | 2012-03-08 | Pressing mechanism of pushing cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200853602U CN202479840U (en) | 2012-03-08 | 2012-03-08 | Pressing mechanism of pushing cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202479840U true CN202479840U (en) | 2012-10-10 |
Family
ID=46954300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200853602U Expired - Lifetime CN202479840U (en) | 2012-03-08 | 2012-03-08 | Pressing mechanism of pushing cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202479840U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922331A (en) * | 2012-11-14 | 2013-02-13 | 安徽巨一自动化装备有限公司 | Adjustable prepressing mechanism |
| CN105945336A (en) * | 2016-05-18 | 2016-09-21 | 镇江市隆盛工具有限公司 | Fixture for groove milling |
| CN107157779A (en) * | 2017-06-28 | 2017-09-15 | 中国人民解放军总医院 | Nutrient solution pusher |
-
2012
- 2012-03-08 CN CN2012200853602U patent/CN202479840U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922331A (en) * | 2012-11-14 | 2013-02-13 | 安徽巨一自动化装备有限公司 | Adjustable prepressing mechanism |
| CN105945336A (en) * | 2016-05-18 | 2016-09-21 | 镇江市隆盛工具有限公司 | Fixture for groove milling |
| CN107157779A (en) * | 2017-06-28 | 2017-09-15 | 中国人民解放军总医院 | Nutrient solution pusher |
| CN107157779B (en) * | 2017-06-28 | 2023-05-02 | 中国人民解放军总医院 | Nutrient solution pusher |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |