Delayed return mechanism of ejection cylinder

Abstract

The utility model discloses a delayed return mechanism of an ejection cylinder, and relates to the technical field of ejection cylinders. The delayed return mechanism of the ejection cylinder comprises an ejection cylinder body, the ejection cylinder body comprises a cylinder body and a telescopic rod, the telescopic rod is arranged at the end of the cylinder body in a sliding mode and extends into the cylinder body, and a front end cover and a rear end base are arranged at the two ends of the cylinder body respectively; the time-delay return assembly is used for limiting the retraction of the telescopic rod, the time-delay return assembly comprises a detachable mounting disc arranged at the end part of the cylinder body, a through hole for the telescopic rod to stretch out and draw back is formed in the surface of the mounting disc, and four arc-shaped positioning plates are arranged on the inner wall of the through hole in a circumferential array manner. According to the utility model, through the arrangement of the delayed return assembly, when the ejection cylinder body operates, after the telescopic rod is driven to extend to the maximum, the four arc-shaped positioning plates can be driven to move towards the middle at the same time to effectively clamp and fix the telescopic rod, so that the purpose of delayed return is achieved, and the stability of an ejected workpiece is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a top -out cylinder technical field, concretely is a top -out cylinder delay return mechanism. BACKGROUND

[0002] The role of the top -out cylinder in the four -column hydraulic machine is mainly used for demolding, and the processed workpiece is ejected from the mold, and the main role of the top -out cylinder delay return is to ensure that the workpiece is completely fixed in the mold, and movement or damage is avoided during the return process.

[0003] The principle of the top -out cylinder delay return mainly depends on the structure and working mechanism inside the cylinder, when the cylinder ejects, air enters the cylinder through the air inlet of the cylinder, is compressed to drive the piston to move, when the piston reaches the top limit position, the air pressure increases accordingly, the control valve automatically switches the air path, the air pressure overflows from the top limit port, and the air release effect is achieved, at this time, the pressure difference decreases, the piston is pushed back by the external force, and the retracting action is completed, the above-mentioned top -out cylinder delay return mode mainly depends on the control of air pressure, due to the instability of air flow and the compressibility of air flow, the top -out cylinder has instability when rebounding in delay, thereby affecting the stability of the ejected workpiece. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a top -out cylinder delay return mechanism, which solves the problem of poor stability of the ejected workpiece in the background art.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a top -out cylinder delay return mechanism, comprising:

[0006] The top -out cylinder body comprises a cylinder body and a telescopic rod slidingly arranged at the end of the cylinder body and extending into the cylinder body, and the two ends of the cylinder body are respectively provided with a front end cover and a rear end seat;

[0007] The delay return assembly is used for limiting the retraction of the telescopic rod, and the delay return assembly comprises a detachable mounting disc arranged at the end of the cylinder body, and a through hole is formed in the surface of the mounting disc for the telescopic rod to extend and retract, the inner wall of the through hole is circumferentially arranged with four arc-shaped positioning plates, and the delay return assembly further comprises a driving motor arranged on the outer ring surface of the mounting disc and used for driving the four arc-shaped positioning plates to move towards the middle at the same time to limit and lock the telescopic rod.

[0008] Preferably, four rectangular cavities are circumferentially arranged in the interior of the mounting disc, and a ring cavity is further formed in the interior of the mounting disc, and a sliding plate is slidingly arranged on the inner wall of the rectangular cavity.

[0009] Preferably, the surface of the sliding plate is fixed with two symmetrical connecting rods, and the ends of the two connecting rods away from the sliding plate extend into the through hole and are fixedly connected with the outer arc surface of the arc-shaped positioning plate.

[0010] Preferably, the inner wall of the rectangular cavity is rotatably provided with threaded columns, and the other ends of the four threaded columns extend into the annular cavity, the output end of the driving motor extends into the annular cavity and is fixedly connected with the end of one threaded column, and the surface of the sliding plate is provided with a threaded hole in threaded connection with the outer surface of the threaded column.

[0011] Preferably, the inner wall of the annular cavity is rotatably provided with a conical internal gear ring, the surfaces of the four threaded columns are fixedly provided with conical gears, and the four conical gears are in meshing connection with the conical internal gear ring.

[0012] Preferably, the inner arc surface of the arc-shaped positioning plate is fixedly provided with an arc-shaped anti-skid pad, and the material of the arc-shaped anti-skid pad is elastic rubber.

[0013] Preferably, the side surface of the mounting disc is circumferentially provided with four mounting holes, and the inner walls of the four mounting holes are provided with mounting bolts, and the surface of the front end cover is provided with a cylindrical threaded groove in threaded connection with the threaded ends of the four mounting bolts. Beneficial effects

[0014] The utility model provides a kind of ejector cylinder delay return mechanism.Compared with prior art, it has the following beneficial effects:

[0015] The ejector cylinder delay return mechanism, by setting delay return assembly, when the ejector cylinder body runs, after driving telescopic rod to elongate to maximum, four arc-shaped positioning plates can be driven to move to middle simultaneously to effectively clamp and fix telescopic rod, to realize the purpose of delay return, guarantee the stability of workpiece after ejecting. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0017] Figure 2 It is a side view structure schematic diagram of the utility model.

[0018] Figure 3 It is a mounting disc section structure schematic diagram of the utility model.

[0019] Figure 4 It is a three-dimensional structure schematic diagram of the utility model Figure 3 Enlarged structure schematic diagram of A place in the utility model.

[0020] In the drawing

[0021] 100, ejecting cylinder body; 101, cylinder body; 102, telescopic rod; 103, front end cover; 104, rear end seat;

[0022] 200, delay return assembly; 201, mounting disc; 202, arc-shaped positioning plate; 203, driving motor; 204, rectangular cavity; 205, annular cavity; 206, sliding plate; 207, connecting rod; 208, threaded column; 209, conical internal gear ring; 2010, conical gear; 2011, arc-shaped non-slip pad;

[0023] 300, mounting bolt. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-4 The utility model provides a technical scheme: a delay return mechanism of ejecting cylinder, which comprises:

[0026] The ejecting cylinder body 100 comprises a cylinder body 101 and a telescopic rod 102 slidingly arranged at the end of the cylinder body 101 and extending into the inside of the cylinder body 101, and the two ends of the cylinder body 101 are respectively provided with a front end cover 103 and a rear end seat 104;

[0027] The delay return assembly 200 is used for limiting the retraction of the telescopic rod 102, and comprises a detachable mounting disc 201 arranged at the end of the cylinder body 101, wherein the surface of the mounting disc 201 is provided with a through hole for the telescopic rod 102 to extend and retract, the inner wall of the through hole is circumferentially provided with four arc-shaped positioning plates 202, and the delay return assembly 200 further comprises a driving motor 203 arranged on the outer circumferential surface of the mounting disc 201 and used for driving the four arc-shaped positioning plates 202 to move towards the middle at the same time to limit and lock the telescopic rod 102.

[0028] Please refer to Figure 3 , Figure 4 The inside of the mounting disc 201 is circumferentially provided with four rectangular cavities 204, and the inside of the mounting disc 201 is further provided with an annular cavity 205, and the inner wall of the rectangular cavity 204 is slidingly provided with a sliding plate 206.

[0029] Specifically, the rectangular cavity 204 is arranged, so that the sliding plate 206 can move on the inner wall of the rectangular cavity 204.

[0030] Please refer toFigure 4 The surface of the sliding plate 206 is fixed with two symmetrical connecting rods 207, and the ends of the two connecting rods 207 away from the sliding plate 206 extend into the through hole and are fixedly connected with the outer arc surface of the arc-shaped positioning plate 202. The inner wall of the rectangular cavity 204 is provided with sliding holes extending into the through hole and respectively slidingly connected with the outer surfaces of the two connecting rods 207.

[0031] Specifically, by arranging the connecting rods 207, the arc-shaped positioning plate 202 can be driven to move by the movement of the sliding plate 206.

[0032] Referring to Figure 4 The inner wall of the rectangular cavity 204 is rotatably provided with four threaded columns 208, the other ends of the four threaded columns 208 extend into the annular cavity 205, the output end of the driving motor 203 extends into the annular cavity 205 and is fixedly connected with the end of one threaded column 208, and the surface of the sliding plate 206 is provided with a threaded hole in threaded connection with the outer surface of the threaded column 208.

[0033] Specifically, by arranging the threaded column 208, the sliding plate 206 can be automatically moved by the rotation of the threaded column 208, thereby automatically moving the arc-shaped positioning plate 202.

[0034] Referring to Figure 4 The inner wall of the annular cavity 205 is rotatably provided with a conical internal gear ring 209, the surfaces of the four threaded columns 208 are fixedly provided with conical gears 2010, and the four conical gears 2010 are in meshing connection with the conical internal gear ring 209.

[0035] Specifically, by arranging the conical gears 2010 and the conical internal gear ring 209, the rotation of one threaded column 208 can drive the simultaneous rotation of the other three threaded columns 208.

[0036] Referring to Figure 4 The inner arc surface of the arc-shaped positioning plate 202 is fixedly provided with an arc-shaped anti-skid pad 2011, and the material of the arc-shaped anti-skid pad 2011 is elastic rubber.

[0037] By arranging the arc-shaped anti-skid pad 2011, the stability of the arc-shaped positioning plate 202 after clamping and fixing the telescopic rod 102 is effectively ensured.

[0038] Referring to Figure 2 The side surface of the mounting disc 201 is circumferentially provided with four mounting holes, and the inner walls of the four mounting holes are provided with mounting bolts 300. The surface of the front end cover 103 is provided with a cylindrical threaded groove in threaded connection with the threaded ends of the four mounting bolts 300.

[0039] Specifically, by setting the mounting bolt 300, the delay return assembly 200 is installed on the front end cover 103 surface of the ejector cylinder body 100.

[0040] The utility model discloses a delay return assembly 200 is set, when the ejector cylinder body 100 runs, after driving telescopic rod 102 elongation to maximum, can drive four arc locating plate 202 to move to the middle simultaneously to the effective clamping of telescopic rod 102 is fixed, and then realizes the purpose of delay return, guarantees the stability of the workpiece after ejecting.

[0041] Working principle, when the ejector cylinder body 100 runs, after driving telescopic rod 102 elongation to maximum, can start drive motor 203, and the rotation of drive motor 203 drives a threaded column 208 to rotate, and the rotation of a threaded column 208 drives conical gear ring 2010 under the action of a conical gear ring 2010 conical gear ring 209 rotates, and the rotation of conical gear ring 209 drives other three conical gear rings 2010 and threaded column 208 to rotate, thereby drive four threaded columns 208 to rotate simultaneously, and the rotation of threaded column 208 drives sliding plate 206 to move, and the movement of sliding plate 206 drives arc locating plate 202 to move to the middle through connecting rod 207, thereby drive four arc locating plate 202 to move to the middle simultaneously to the effective clamping of telescopic rod 102 is fixed, when the workpiece after ejecting is placed stable, then respectively start drive motor 203 reverse rotation and ejector cylinder body 100, realize telescopic rod 102's contraction, and then realize the purpose of delay return, guarantee the stability of the workpiece after ejecting.

[0042] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

Claims

1. An ejector cylinder delayed retraction mechanism characterized by, Include: The ejection cylinder body (100) includes a cylinder body (101) and a telescopic rod (102) slidingly arranged at the end of the cylinder body (101) and extending into the interior of the cylinder body (101), and the two ends of the cylinder body (101) are respectively provided with a front end cover (103) and a rear end seat (104); The delay return assembly (200) is used for limiting the retraction of the telescopic rod (102), the delay return assembly (200) includes a detachable mounting disc (201) arranged at the end of the cylinder body (101), and the surface of the mounting disc (201) is provided with a through hole for the telescopic rod (102) to extend, the inner wall of the through hole is circumferentially arranged with four arc-shaped positioning plates (202), and the delay return assembly (200) further includes a driving motor (203) arranged on the outer ring surface of the mounting disc (201) for driving the four arc-shaped positioning plates (202) to move towards the middle at the same time to limit and lock the telescopic rod (102).

2. The ejector cylinder delayed retract mechanism of claim 1 wherein: The inside of the mounting disc (201) is circumferentially arranged with four rectangular cavities (204), and the inside of the mounting disc (201) is further provided with an annular cavity (205), and the inner wall of the rectangular cavity (204) is slidingly provided with a sliding plate (206).

3. A delay return mechanism for an ejector cylinder as claimed in claim 2, wherein: The surface of the sliding plate (206) is fixedly provided with two symmetrical connecting rods (207), one end of the two connecting rods (207) away from the sliding plate (206) extends into the interior of the through hole and is fixedly connected with the outer arc surface of the arc-shaped positioning plate (202), and the inner wall of the rectangular cavity (204) is provided with a sliding hole extending into the interior of the through hole and slidingly connected with the outer surface of the two connecting rods (207).

4. The ejector cylinder delayed retraction mechanism of claim 3, wherein: The inner wall of the rectangular cavity (204) is rotatably provided with a threaded column (208), and the other end of the four threaded columns (208) extends into the interior of the annular cavity (205), the output end of the driving motor (203) extends into the interior of the annular cavity (205) and is fixedly connected with the end of one threaded column (208), and the surface of the sliding plate (206) is provided with a threaded hole threadedly connected with the outer surface of the threaded column (208).

5. A delay return mechanism for an ejection cylinder as claimed in claim 4, wherein: The inner wall of the annular cavity (205) is rotatably provided with a conical internal gear ring (209), the surfaces of the four threaded columns (208) are fixedly provided with conical gears (2010), and the four conical gears (2010) are meshed with the conical internal gear ring (209).

6. The ejector cylinder delayed retraction mechanism of claim 1 wherein: The inner arc surface of the arc-shaped positioning plate (202) is fixedly provided with an arc-shaped anti-skid pad (2011), and the material of the arc-shaped anti-skid pad (2011) is elastic rubber.

7. An ejector cylinder delay return mechanism according to any one of claims 1 to 6, wherein: The side surface of the mounting disc (201) is circumferentially provided with four mounting holes, and the inner wall of the four mounting holes is provided with a mounting bolt (300), and the surface of the front end cover (103) is provided with a cylindrical threaded groove threadedly connected with the threaded end of the four mounting bolts (300).

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