Double-force filling and sealing air cylinder

Abstract

The utility model discloses a double-force filling and sealing air cylinder which comprises a cylinder body and a piston rod, the piston rod is arranged in the cylinder body in a sliding fit mode, an end cover is arranged at the upper end of the cylinder body, a mounting plate is arranged at the lower end of the cylinder body, a middle cover is arranged in the middle of the cylinder body, and an upper cavity is formed between the end cover and the middle cover. An upper cavity is formed between the middle cover and the mounting plate, a lower cavity is formed between the middle cover and the mounting plate, a vertically-through connecting channel is formed in the piston rod, a first piston and a second piston are arranged on the periphery of the piston rod in a sleeving mode, the first piston is arranged in the upper cavity in a sliding fit mode, and the second piston is arranged in the lower cavity in a sliding fit mode; the middle cover is provided with a first air inlet communicated to the upper cavity, and the mounting plate is provided with a second air inlet communicated to the lower cavity. The piston rod has the advantages that ventilation is conducted through the first air inlet and the second air inlet at the same time, so that the output force generated when the piston rod moves is improved; therefore, the sealing cylinder can provide faster and larger thrust.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air cylinder, especially relates to a force multiplying filling and sealing air cylinder. BACKGROUND

[0002] The processing and manufacturing equipment of plastic material quality material bottle, oil bottle, medicine bottle and the like, when bottle type blowing operation is carried out in the bottle blowing machine, usually directly blocks the bottle embryo mouth with the sealing air cylinder to implement high pressure blowing operation.

[0003] Through the retrieval, the utility model discloses a kind of sealing air cylinder, including cylinder body, the rear end of cylinder body is fixedly arranged with first cylinder cover, the front end of cylinder body is fixedly arranged with second cylinder cover, piston is movably arranged in cylinder body, high-pressure inlet hole and first low-pressure inlet hole are formed in the first cylinder cover, second low-pressure inlet hole is formed in the second cylinder cover, the inner cavity of cylinder body is divided into first chamber and second chamber independent of each other by the piston, first chamber is communicated with first low-pressure inlet hole, second chamber is communicated with second low-pressure inlet hole, sealing pad is arranged on the piston, the inside of first cylinder cover, piston and sealing pad is hollow and formed high-pressure inlet channel communicated with high-pressure inlet hole, the end of first cylinder cover away from cylinder body is sequentially provided with rear cover and rear cover sleeve from front to back, first Y-shaped sealing ring is embedded in the inner wall of rear cover, first ster seal sealing ring is embedded in the inner wall of rear cover sleeve, first Y-shaped sealing ring and first ster seal sealing ring cooperate to form double sealing.

[0004] The above prior art has the advantages that the sealing air cylinder rear cover has better air tightness and is less likely to leak, but the prior art has the defect that if the air cylinder output force is small during sealing, the bottle or can to be blown during blowing molding cannot be fixed, resulting in reduced yield, so the defect needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above problems, and provides a force multiplying filling and sealing air cylinder, which has the advantage of greater sealing air cylinder output force.

[0006] To achieve the above object, the utility model provides the following technical scheme: a force amplification filling and sealing air cylinder, including cylinder and piston rod, the piston rod is slidably matched in the cylinder, the upper end of cylinder is provided with end cover, the lower end of cylinder is equipped with mounting plate, the middle part of cylinder is equipped with middle cover, the upper chamber is formed between end cover and middle cover, the lower chamber is formed between middle cover and mounting plate, the connecting channel that goes through up and down is equipped in the piston rod, the outer periphery of piston rod is equipped with first piston and second piston, the first piston is slidably matched in the upper chamber, the second piston is slidably matched in the lower chamber, the middle cover is equipped with first air inlet that links to the upper chamber, the mounting plate is equipped with second air inlet that links to the lower chamber, the end cover is equipped with third air inlet that links to the upper chamber, the mounting plate is equipped with the air inlet channel that links to the connecting channel.

[0007] Preferably, the piston rod comprises an upper piston rod and a lower piston rod, the upper piston rod and the lower piston rod are threadedly connected, the lower piston rod is provided with a limiting step matched with the lower end of the second piston, the upper end of the second piston is in abutting connection with the lower end of the upper piston rod, and the second piston is arranged between the upper piston rod and the lower piston rod.

[0008] Preferably, the first piston and the inner wall of the upper chamber are sealingly connected with a first sealing ring, the upper piston rod and the first piston are sealingly connected with a second sealing ring, the second piston and the inner wall of the lower chamber are sealingly connected with a third sealing ring, and the lower piston rod and the second piston are sealingly connected with a fourth sealing ring.

[0009] Preferably, the mounting plate is provided with a first annular groove, and the first annular groove is provided with a fifth sealing ring sealingly connected with the lower piston rod.

[0010] Preferably, the middle cover is provided with a second annular groove, and the second annular groove is provided with a sixth sealing ring.

[0011] Preferably, the third sealing ring, the fifth sealing ring and the sixth sealing ring are Y-shaped sealing rings.

[0012] Preferably, the upper end of the upper piston rod is provided with an upper guide sleeve and a clasp, the upper guide sleeve is fixedly installed in the connecting channel of the upper piston rod through the clasp, the mounting plate is provided with a lower guide sleeve and a fixed cover, the lower guide sleeve is fixedly installed on the mounting plate through the fixed cover, the upper guide sleeve is provided with a first guide hole, the lower guide sleeve is provided with a second guide hole, and the first guide hole, the second guide hole and the connecting channel are concentrically arranged.

[0013] Preferably, the end cover is provided with a first guide ring sleeved on the outer periphery of the upper piston rod, and the middle cover is provided with a second guide ring sleeved on the outer periphery of the upper piston rod.

[0014] Preferably, the first piston is a low-pressure piston, and the second piston is a high-pressure piston.

[0015] Preferably, a dustproof sealing ring is sealingly arranged between the upper piston rod and the end cover.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The power-assisted filling and sealing air cylinder provided by the utility model improves the output force when the piston rod moves, so that the air cylinder can provide more rapid and greater thrust and can more effectively fix the matched workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0019] Fig. 2 It is a first-view-angle cross-sectional structure schematic view of the utility model;

[0020] Fig. 3 It is a second-view-angle cross-sectional structure schematic view of the utility model.

[0021] BRIEF DESCRIPTION OF DRAWINGS: 1, cylinder body; 111, upper cylinder body; 112, lower cylinder body; 101, first air inlet; 102, second air inlet; 103, third air inlet; 104, air inlet channel; 11, end cover; 12, middle cover; 120, second annular groove; 13, mounting plate; 130, first annular groove; 14, upper chamber; 15, lower chamber; 2, piston rod; 20, connecting channel; 21, upper piston rod; 22, lower piston rod; 23, first piston; 24, second piston; 3, upper guide sleeve; 30, first guide hole; 31, buckle; 41, first sealing ring; 42, second sealing ring; 43, third sealing ring; 44, fourth sealing ring; 45, fifth sealing ring; 46, sixth sealing ring; 47, seventh sealing ring; 48, eighth sealing ring; 49, dustproof sealing ring; 51, first guide ring; 52, second guide ring; 53, upper anti-collision pad; 54, lower anti-collision pad; 6, fixed cover; 61, lower guide sleeve; 62, second guide hole. DETAILED DESCRIPTION

[0022] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0023] As shown in the drawings, Figs. 1-3 A force multiplying filling and sealing cylinder, comprising a cylinder body 1 and a piston rod 2, the piston rod 2 is slidingly fitted in the cylinder body 1, the cylinder body 1 comprises an upper cylinder body 111 and a lower cylinder body 112, the upper cylinder body 111 is provided with an end cover 11 at the upper end, the lower cylinder body 112 is provided with a mounting plate 13 at the lower end, a middle cover 12 is arranged between the upper cylinder body 111 and the lower cylinder body 112, an upper chamber 14 is formed in the upper cylinder body 111 between the end cover 11 and the middle cover 12, a lower chamber 15 is formed in the lower cylinder body 112 between the middle cover 12 and the mounting plate 13, a connecting channel 20 is arranged in the piston rod 2, a first piston 23 and a second piston 24 are arranged on the outer periphery of the piston rod 2, the first piston 23 is slidingly fitted in the upper chamber 14, the second piston 24 is slidingly fitted in the lower chamber 15, the middle cover 12 is provided with a first air inlet 101 connected to the upper chamber 14, the mounting plate 13 is provided with a second air inlet 102 connected to the lower chamber 15, the end cover 11 is provided with a third air inlet 103 connected to the upper chamber 14, and the mounting plate 13 is provided with an air inlet channel 104 connected to the connecting channel 20.

[0024] When it is necessary to blow air to the bottle embryo, low-pressure gas is introduced into the first air inlet 101 and high-pressure gas is introduced into the second air inlet 102, at this time, the first piston 23, the second piston 24 and the piston rod 2 are moved upward by the introduced gas, the upper end of the upper piston rod 21 is matched with the bottle embryo, at this time, air is introduced into the air inlet channel 104, at this time, the gas reaches the bottle embryo through the connecting channel 20, thereby achieving the purpose of blowing the bottle, when the blowing of the bottle is completed, at this time, the first air inlet 101, the second air inlet 102 and the air inlet channel 104 stop air introduction, at this time, air is introduced into the third air inlet 103, thereby pushing the first piston 23, the second piston 24 and the piston rod 2 to reset.

[0025] Therefore, air is introduced into the first air inlet 101 and the second air inlet 102 at the same time, thereby improving the output force when the piston rod 2 moves, so that the sealing cylinder can provide more rapid and greater thrust and can more effectively fix the matched workpiece.

[0026] The piston rod 2 comprises an upper piston rod 21 and a lower piston rod 22, the upper piston rod 21 is threadedly connected with the lower piston rod 22, the lower piston rod 22 is provided with a limiting step matched with the lower end of the second piston 24, the upper end of the second piston 24 is abuttingly matched with the lower end of the upper piston rod 21, and the second piston 24 is arranged between the upper piston rod 21 and the lower piston rod 22.

[0027] The first piston 23 is sealingly matched with the inner wall of the upper chamber 14 by a first sealing ring 41, the upper piston rod 21 is sealingly matched with the first piston 23 by a second sealing ring 42, the second piston 24 is sealingly matched with the inner wall of the lower chamber 15 by a third sealing ring 43, the upper piston rod 21 is sealingly matched with the lower piston rod 22 by a fourth sealing ring 44, the mounting plate 13 is internally provided with a first annular groove 130, in the embodiment, the first annular groove 130 is two, and each of the first annular grooves 130 is internally provided with a fifth sealing ring 45 sealingly matched with the lower piston rod 22, the fifth sealing ring 45 is a Y-shaped sealing ring, the opening grooves of the two fifth sealing rings 45 are arranged in directions away from each other, the middle cover 12 is internally provided with a second annular groove 120, the second annular groove 120 is internally provided with a sixth sealing ring 46, and the third sealing ring 43 and the sixth sealing ring 46 are also Y-shaped sealing rings, since the Y-shaped sealing ring has a self-sealing function, the sealing performance can be improved, and the second sealing ring 42 and the fourth sealing ring 44 are O-shaped rings.

[0028] Further, the second piston 24 is provided with a positioning groove, the positioning groove is positioned and matched with the upper piston rod 21, and the positioning groove is sealingly matched with the upper piston rod 21 by a seventh sealing ring 47.

[0029] The upper end of the upper piston rod 21 is provided with an upper guide sleeve 3 and a clasp 31, the upper guide sleeve 3 is fixedly installed in the connecting channel 20 of the upper piston rod 21 through the clasp 31, the mounting plate 13 is provided with a lower guide sleeve 61 and a fixed cover 6, the lower guide sleeve 61 is fixedly installed on the mounting plate 13 through the fixed cover 6, the upper guide sleeve 3 is provided with a first guide hole 30, the lower guide sleeve 61 is provided with a second guide hole 62, and the first guide hole 30, the second guide hole 62 and the connecting channel 20 are concentrically and coaxially arranged, and a connecting pipe for blowing air can be installed in the first guide hole 30, the second guide hole 62 and the connecting channel 20.

[0030] The lower guide sleeve 61 is internally provided with a third annular groove, the third annular groove is internally provided with an eighth sealing ring 48, and the eighth sealing ring 48 is a Y-shaped sealing ring.

[0031] The upper piston rod 21 is sealingly matched with the end cover 11 by a dustproof sealing ring 49.

[0032] The end cover 11 is provided with a first guide ring 51 sleeved on the outer periphery of the upper piston rod 21, and the middle cover 12 is provided with a second guide ring 52 sleeved on the outer periphery of the upper piston rod 21, and the guide rings can guide the installation of the upper piston rod 21 and the lower piston rod 22.

[0033] The upper chamber 14 is provided with an upper anti-collision pad 53 at the upper end and a lower anti-collision pad 54 at the lower end, and the upper anti-collision pad 53 and the lower anti-collision pad 54 are used to reduce the impact of the first piston 23, thereby improving the service life.

[0034] The first piston 23 is a low-pressure piston, and the second piston 24 is a high-pressure piston.

[0035] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0036] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A force multiplying filling and sealing pneumatic cylinder comprising a cylinder body (1) and a piston rod (2) slidingly fitted within the cylinder body (1), characterized in that: The upper end of the cylinder (1) is provided with an end cover (11), the lower end of the cylinder (1) is provided with a mounting plate (13), the middle part of the cylinder (1) is provided with a middle cover (12), the upper chamber (14) is formed between the end cover (11) and the middle cover (12), the lower chamber (15) is formed between the middle cover (12) and the mounting plate (13), the piston rod (2) is provided with a connecting channel (20) penetrating from top to bottom, the piston rod (2) is provided with a first piston (23) and a second piston (24) on the outer periphery, the first piston (23) is slidingly fitted in the upper chamber (14), the second piston (24) is slidingly fitted in the lower chamber (15), the middle cover (12) is provided with a first air inlet (101) connected to the upper chamber (14), the mounting plate (13) is provided with a second air inlet (102) connected to the lower chamber (15), the end cover (11) is provided with a third air inlet (103) connected to the upper chamber (14), the mounting plate (13) is provided with an air inlet channel (104) connected to the connecting channel (20).

2. A force multiplying filling and sealing cylinder according to claim 1, characterized in that: The piston rod (2) comprises an upper piston rod (21) and a lower piston rod (22), the upper piston rod (21) and the lower piston rod (22) are connected by thread cooperation, the lower piston rod (22) is provided with a limiting step matched with the lower end of the second piston (24), the upper end of the second piston (24) is abuttingly matched with the lower end of the upper piston rod (21), and the second piston (24) is arranged between the upper piston rod (21) and the lower piston rod (22).

3. A force multiplying filling and sealing cylinder according to claim 2, characterized in that: The first piston (23) and the inner wall of the upper chamber (14) are sealingly matched with a first sealing ring (41), the upper piston rod (21) and the first piston (23) are sealingly matched with a second sealing ring (42), the second piston (24) and the inner wall of the lower chamber (15) are sealingly matched with a third sealing ring (43), and the upper piston rod (21) and the lower piston rod (22) are sealingly matched with a fourth sealing ring (44).

4. A force multiplying filling and sealing cylinder according to claim 3, characterized in that: The mounting plate (13) is provided with a first annular groove (130), and the first annular groove (130) is provided with a fifth sealing ring (45) sealingly matched with the lower piston rod (22).

5. A force multiplying filling and sealing cylinder according to claim 4, characterized in that: The middle cover (12) is provided with a second annular groove (120), and the second annular groove (120) is provided with a sixth sealing ring (46).

6. A force multiplying filling and sealing cylinder according to claim 5, characterized in that: The third sealing ring (43), the fifth sealing ring (45) and the sixth sealing ring (46) are Y-shaped sealing rings.

7. A force multiplying filling and sealing cylinder as claimed in claim 2, characterized in that: The upper end of the upper piston rod (21) is provided with an upper guide sleeve (3) and a clasp (31), the upper guide sleeve (3) is fixedly installed in the connecting channel (20) of the upper piston rod (21) through the clasp (31), the mounting plate (13) is provided with a lower guide sleeve (61) and a fixed cover (6), the lower guide sleeve (61) is fixedly installed on the mounting plate (13) through the fixed cover (6), the upper guide sleeve (3) is provided with a first guide hole (30), the lower guide sleeve (61) is provided with a second guide hole (62), and the first guide hole (30), the second guide hole (62) and the connecting channel (20) are coaxially arranged.

8. A force multiplying filling and sealing cylinder as claimed in claim 2, characterized in that: The end cover (11) is provided with a first guide ring (51) sleeved on the outer periphery of the upper piston rod (21), and the middle cover (12) is provided with a second guide ring (52) sleeved on the outer periphery of the upper piston rod (21).

9. A force multiplying filling and sealing cylinder as claimed in claim 1, characterized in that: The first piston (23) is a low-pressure piston, and the second piston (24) is a high-pressure piston.

10. A force multiplying filling and sealing cylinder as claimed in claim 2, characterized in that: The upper piston rod (21) and the end cover (11) are sealingly matched with a dustproof sealing ring (49).

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