Double-circuit pneumatic ejector device for press

Abstract

The utility model relates to a kind of double-loop pneumatic ejector device for press, belong to forging and pressing mechanical equipment technical field, including platen and the electromagnetic reversing valve for air intake and exhaust, the lower end of the platen is installed with cylinder body;Double-loop air cushion for ejecting is installed in the cylinder body;The cylinder body inner portion is upper cavity and lower cavity and upper cavity and lower cavity are respectively opened inlet one and inlet two, and the electromagnetic reversing valve is communicated inlet one and inlet two. On the one hand, the double-loop air cushion of double-piston structure makes the ejection force greatly increase, can better satisfy the work demand of press ejecting;On the other hand, by two-position five-way electromagnetic reversing valve to the bi-directional control of gas intake and exhaust, cooperate the up-down movement of press slider, so that the ejection and put into operation of material is more convenient and fast.In addition, the device overall structure is simple, easy to install, in the later use process is easy to maintain, reduces the maintenance cost of equipment, improves the use efficiency of equipment.

Description

Technical Field

[0001] This utility model relates to the field of forging and pressing machinery and equipment, specifically to a dual-circuit pneumatic ejector device for a press. Background Technology

[0002] In existing technologies, the ejector devices used in presses mainly include pneumatic ejector devices and hydraulic ejector devices. Traditional pneumatic ejector devices generally employ a single-loop air intake method. Their operation involves air pressure pushing the piston upwards during upward movement, and the press pressure pushing the piston back during downward movement. This single-loop air intake pneumatic ejector device suffers from relatively low ejection force in practical use.

[0003] While hydraulic jacking devices can provide greater pressure than pneumatic jacking devices, they require a dedicated pump station. This results in a significantly higher cost for hydraulic jacking devices compared to the air tanks required by pneumatic jacking devices, increasing both operating and maintenance costs.

[0004] In summary, existing press ejector devices have varying degrees of defects in practical applications and urgently need improvement. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a dual-circuit pneumatic ejector device for presses. This device, by employing a dual-circuit air cushion and a specific control method, aims to solve the problems of low ejection force or high cost in existing ejector devices, achieving the technical effects of high ejection force, simple structure, convenient maintenance, and safe operation.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] A dual-circuit pneumatic ejector device for a press includes a platform and an electromagnetic reversing valve for air intake and exhaust, wherein a cylinder is mounted on the lower end of the platform.

[0008] The cylinder is equipped with a dual-circuit air cushion for material ejection;

[0009] The cylinder body is divided into an upper chamber and a lower chamber, and an air inlet one and an air inlet two are respectively opened on the upper chamber and the lower chamber.

[0010] The electromagnetic reversing valve connects air inlet one and air inlet two.

[0011] Preferably, the electromagnetic reversing valve is a two-position five-way electromagnetic valve, and the A end of the two-position five-way electromagnetic valve is connected to the second air inlet, the B end is connected to the first air inlet, the P end is the air source inlet, and R and S are both exhaust ports.

[0012] Preferably, the dual-circuit air cushion includes an upper piston and a lower piston adapted to the cylinder block, a connecting rod is installed between the upper piston and the lower piston, a push rod is installed at the upper end of the upper piston and extends through the platform to the outside, an air cushion top plate is installed at the upper end of the push rod, and a shock-absorbing air cushion is installed on the air cushion top plate.

[0013] Preferably, the platform has through holes for use with the push rod.

[0014] Preferably, an air cushion upright plate with a limiting air cushion top plate is mounted opposite to the platform.

[0015] Preferably, an exhaust port one and an exhaust port two are provided on the cylinder block between the upper piston and the lower piston.

[0016] Preferably, the platform and the cylinder are fixedly connected by a bolt group.

[0017] With the above structure, this utility model has the following advantages:

[0018] On the one hand, the dual-piston, dual-circuit air cushion significantly increases the ejection force, better meeting the material ejection requirements of the press. On the other hand, the bidirectional control of gas inlet and outlet via a two-position five-way solenoid valve, combined with the up-and-down movement of the press slide, makes material ejection and loading operations more convenient and efficient. Furthermore, the device has a simple overall structure, is easy to install, and facilitates maintenance during later use, reducing equipment maintenance costs and improving equipment efficiency.

[0019] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is an internal schematic diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection of the air cushion top plate of this utility model.

[0024] As shown in the figure: 1. Platform; 2. Cylinder block; 3. Dual-circuit air cushion; 301. Upper piston; 302. Lower piston; 303. Connecting rod; 304. Push rod; 4. Inlet 1; 5. Through hole; 6. Solenoid directional valve; 7. Inlet 2; 8. Exhaust port 1; 9. Exhaust port 2; 10. Shock-absorbing air cushion; 11. Air cushion top plate; 12. Air cushion vertical plate. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] The present invention will now be described in further detail in conjunction with the full text.

[0028] Combined with appendix Figures 1-3 A dual-circuit pneumatic ejector device for a press includes a platform 1 and an electromagnetic reversing valve 6 for air intake and exhaust. A cylinder 2 is installed at the lower end of the platform 1. In terms of installation, the cylinder 2 is connected to the platform 1 via a vertical plate 12 using screws and nuts, thus achieving fixed installation of the device on the press workbench.

[0029] A dual-circuit air cushion 3 for ejecting material is installed inside the cylinder 2;

[0030] The cylinder block 2 has a partition installed inside, which divides the cylinder block into an upper chamber and a lower chamber. The upper chamber and the lower chamber are respectively opened with an air inlet 4 and an air inlet 7.

[0031] The electromagnetic reversing valve 6 connects air inlet 4 and air inlet 7. The electromagnetic reversing valve 6 is a two-position five-way solenoid valve, with end A connected to air inlet 7, end B connected to air inlet 4, end P being the air source inlet, and ends R and S being exhaust ports. It includes air inlet 4, air inlet 7, exhaust ports 8 and 9, and a shock-absorbing pad 10 in the air cushion top plate 11. This shock-absorbing pad 10 has a buffering effect, reducing impact during the material feeding process and protecting the equipment and materials. Simultaneously, the two-position five-way electromagnetic reversing valve 6 controls the air intake mode of air inlet 4 and air inlet 7, achieving control of the dual-circuit air cushion's operating state.

[0032] A through hole 5 is provided on the platform 1 to cooperate with the push rod 304.

[0033] An air cushion upright plate 12 is installed on the platform 1, which is opposite to the limiting air cushion top plate 11.

[0034] Exhaust port 1 8 and exhaust port 2 9 are provided on the cylinder block between the upper piston 301 and the lower piston 302.

[0035] The platform 1 and the cylinder 2 are fixedly connected by a bolt group.

[0036] like Figure 1 As shown, this dual-circuit pneumatic lifting device is used when it is necessary to lift the material 13.

[0037] The dual-circuit air cushion 3 includes an upper piston 301 and a lower piston 302 adapted to the cylinder 2. Specifically, the upper piston 301 is located in the upper cavity of the cylinder 2, and the lower piston 302 is located in the lower cavity of the cylinder 2. A connecting rod 303 is installed between the upper piston 301 and the lower piston 302. The connecting rod 303 passes through a partition and can move on the partition. A push rod 304 is installed at the upper end of the upper piston 301, and the push rod 304 extends outward through the platform 1. An air cushion top plate 11 is installed on the upper end of rod 304, and a shock-absorbing air cushion 10 is installed on the air cushion top plate 11. In the structure of the dual-circuit air cushion 3, the cylinder 2 is divided into cavity one and cavity two by exhaust port one 8 and exhaust port two 9 as the dividing line. The dual-circuit air cushion 3 uses an upper piston 301 and a lower piston 302. The upper piston 301 is located in cavity one and divides cavity one into upper cavity and lower cavity. The lower piston 302 is located in cavity two and divides cavity one into upper cavity and lower cavity.

[0038] During operation, when compressed air enters the cylinder through the cylinder inlet 4 controlled by the two-position five-way solenoid directional valve, the piston moves downward under the action of gas pressure, and at the same time drives the top plate 11 to move downward. At this time, the gas in the lower chambers of chamber one and chamber two is discharged into the air through the exhaust port 8 and the R port in the solenoid directional valve 6, respectively, completing one downward movement.

[0039] When compressed air enters the lower chambers of cylinder cavity one and cavity two through the cylinder inlet 7 controlled by the two-position five-way solenoid directional valve, the piston moves upward under the pressure of the gas, and at the same time drives the top plate 11 to move upward, pushing the material out. At this time, the gas in the upper chambers of cavity one and cavity two is discharged into the air through exhaust port two 9 and port S in solenoid directional valve 6, respectively, completing the material pushing action.

[0040] In addition, the push rod is made of 40Cr material, which has high strength, making the push rod less prone to damage, thereby improving the service life of the entire dual-circuit air cushion device.

[0041] The dual-circuit pneumatic ejector device for presses provided by this utility model has a simple and compact overall structure, a large ejection force, and can easily realize material loading and unloading operations. It is also easy to install, facilitates later maintenance and upkeep, and has good practicality and economy. Due to the use of a dual-piston structure and a dual-circuit air cushion, the ejection force is twice that of a single-layer device. Furthermore, the gas inlet and outlet are controlled bidirectionally by an electromagnetic reversing valve, and the sliding block movement facilitates material loading. This device has a simple and compact structure, a large ejection force, is easy to install and maintain, and is safe to use, effectively solving the problems of low ejection force or high cost of existing ejector devices.

[0042] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A dual-circuit pneumatic ejector device for a press, characterized in that, It includes a platform (1) and an electromagnetic reversing valve (6) for intake and exhaust, wherein a cylinder (2) is mounted on the lower end of the platform (1); The cylinder (2) is equipped with a dual-circuit air cushion (3) for ejecting material; The cylinder body is equipped with a partition that divides the cylinder body into an upper chamber and a lower chamber. An air inlet 1 (4) and an air inlet 2 (7) are respectively opened on the upper chamber and the lower chamber. The electromagnetic reversing valve (6) connects the first air inlet (4) and the second air inlet (7).

2. The dual-circuit pneumatic ejector device for a press according to claim 1, characterized in that, The electromagnetic reversing valve (6) is a two-position five-way electromagnetic valve, and the A end of the two-position five-way electromagnetic valve is connected to the second air inlet (7), the B end is connected to the first air inlet (4), the P end is the air source inlet, and R and S are both exhaust ports.

3. The dual-circuit pneumatic ejector device for a press according to claim 1, characterized in that, The dual-circuit air cushion (3) includes an upper piston (301) and a lower piston (302) adapted to the cylinder (2). A connecting rod (303) is installed between the upper piston (301) and the lower piston (302) and the connecting rod (303) can pass through the partition. A push rod (304) is installed at the upper end of the upper piston (301) and the push rod (304) extends to the outside through the platform (1). An air cushion top plate (11) is installed at the upper end of the push rod (304), and a shock-absorbing air cushion (10) is installed on the air cushion top plate (11).

4. The dual-circuit pneumatic ejector device for a press according to claim 3, characterized in that: The platform (1) has through holes (5) for use with the push rod (304).

5. The dual-circuit pneumatic ejector device for a press according to claim 3, characterized in that: An air cushion upright plate (12) is mounted on the platform (1) opposite to the limiting air cushion top plate (11).

6. The dual-circuit pneumatic ejector device for a press according to claim 3, characterized in that: Exhaust port one (8) and exhaust port two (9) are provided on the cylinder block between the upper piston (301) and the lower piston (302).

7. The dual-circuit pneumatic ejector device for a press according to claim 1, characterized in that: The platform (1) and the cylinder (2) are fixedly connected by a bolt group.

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