阅读说明：本技术 一种底模气缸装置 (Bottom die air cylinder device ) 是由 吴志刚 邓文洲 黄孝林 于 2019-10-15 设计创作，主要内容包括：本发明公开一种底模气缸装置,包括缸体、活塞、支承座,气缸内部被活塞分成两个腔室,有支承座一端为第一腔室,无支承座一端为第二腔室,气缸底部设置第一通气管接头与第二腔室连通,构成第一气路；气缸侧壁设置第二通气管接头,其气缸侧壁内还设置有气路通道,气路通道一端连通第一腔室,另一端连通第二通气管接头,构成第二气路；第二气路持续通入恒定气压,其与活塞重量、吹瓶时通入的主吹气压形成向下的恒定压力,第一气路通入大于恒定压力的上顶气压,气缸则上顶；第一气路停止通入上顶气压,气缸则下降。该装置结构简单,通过第二气路持续通入气压,使活塞产生向下的缓冲力,避免了因冲击力过大而损坏部件,使得设备运行的更加稳定。(The invention discloses a bottom die air cylinder device which comprises a cylinder body, a piston and a supporting seat, wherein the interior of an air cylinder is divided into two chambers by the piston, one end with the supporting seat is a first chamber, the other end without the supporting seat is a second chamber, and the bottom of the air cylinder is provided with a first air pipe joint communicated with the second chamber to form a first air path; the side wall of the cylinder is provided with a second vent pipe joint, and a gas path channel is also arranged in the side wall of the cylinder, one end of the gas path channel is communicated with the first cavity, and the other end of the gas path channel is communicated with the second vent pipe joint to form a second gas path; the second air path continuously introduces constant air pressure which forms downward constant pressure with the weight of the piston and the introduced main blowing air pressure during bottle blowing, the first air path introduces upward jacking air pressure which is higher than the constant pressure, and the air cylinder jacks upward; the first air passage stops introducing the top air pressure, and the air cylinder descends. The device simple structure lets in atmospheric pressure through the second gas circuit continuously, makes the piston produce decurrent cushion force, has avoided damaging the part because of the impact force is too big for equipment operation is more stable.)

1. A die block cylinder device comprises a cylinder body (1), a piston (2) which can slide relative to the cylinder body and a supporting seat (3) which penetrates through the top of the cylinder and is connected with the piston, wherein the cylinder is internally divided into two chambers by the piston, one end with the supporting seat is a first chamber (4), and the other end without the supporting seat is a second chamber (5), and the die block cylinder device is characterized in that a first air pipe joint (6) is arranged at the bottom of the cylinder and communicated with the second chamber (5) to form a first air path; the side wall of the cylinder is provided with a second vent pipe connector (7), the side wall of the cylinder is also internally provided with a gas path channel (8), one end of the gas path channel (8) is communicated with the first cavity (4), and the other end of the gas path channel is communicated with the second vent pipe connector (7) to form a second gas path; the second air path is continuously introduced with constant air pressure (P1), the second air path forms downward constant pressure with the weight of the piston and the introduced main blowing air pressure (P2) during bottle blowing, the first air path is introduced with upward jacking air pressure (P3) which is higher than the constant pressure, and the air cylinder jacks upwards; the first air passage stops leading the top pressure (P3), and the air cylinder descends.

2. The die-casting cylinder assembly of claim 1, wherein the constant pressure (P1), the main blowing pressure (P2) and the topping pressure (P3) are controlled by a proportional control valve.

3. The die block cylinder device according to claim 1, wherein the support base (3) is hollow inside.

4. The die block cylinder device according to claim 1, wherein the piston (2) is provided with a wire arranging channel (9) inside, a guide post (10) with a hollow inside is fixedly installed at the wire arranging channel, the bottom of the cylinder body is provided with a guide post opening (11) matched with the guide post (10), the guide post extends out of the guide post opening, and the guide post can slide along with the piston.

5. The die block cylinder device according to claim 3, wherein an annular groove (12) is formed inside the guide post port (11), and the annular groove (12) is provided with a sealing ring (13) and a guide ring (14).

6. The die block cylinder device according to claim 1, wherein an upper cushion (15) is provided at an upper end of an inside of the cylinder.

7. The die block cylinder device according to claim 1, wherein a lower cushion (16) is provided at a lower end of an inside of the cylinder.

8. The bottom die air cylinder device according to claim 1, wherein the bottom of the air cylinder body is further connected with a connecting block (17), and the middle of the connecting block is further provided with a blind rivet (18).

Technical Field

The invention relates to a hot filling bottle device, in particular to a cylinder device for a bottom die of a hot filling bottle.

Background

The bottle blank needs to be placed into a mold to be blown into a container bottle, and the filled bottle has a stereoscopic impression for the sake of attractiveness, so that various patterns can be carved on the mold. When the plastic is softened during hot filling, the plastic is easy to deform and shrink during cooling shrinkage; in order to solve the problem, a telescopic bottom die with a heating function is usually arranged at the bottom of the die, and in the bottle blowing process, the bottom of the bottle is blown into a convex bottom, then the bottom die is pushed upwards through an air cylinder, and the bottom of the bottle protruding downwards is pushed into an upwards concave shape to complete the contraction and extrusion.

The existing hot filling bottle device mainly comprises a cylinder body, a bottom die, a piston and other parts. The cylinder body pushes the piston to reciprocate by alternately air intake and exhaust, so that the bottom die is pushed up and retracted. The strength of the cylinder when compressed air is suddenly introduced in the jacking or returning process is larger, no buffer exists in the jacking or returning process, and due to the extremely high impact cycle of the hot filling bottle, all parts can be quickly damaged due to violent vibration, frequent shutdown and maintenance are needed, so that the influence on production is large, and the cost is high.

Disclosure of Invention

The invention provides a bottom die air cylinder device which is simple in structure and stable in operation.

A bottom die air cylinder device comprises a cylinder body, a piston which can slide relative to the cylinder body and a supporting seat which penetrates through the top of the cylinder and is connected with the piston, wherein the cylinder is internally divided into two chambers by the piston, one end with the supporting seat is a first chamber, the other end without the supporting seat is a second chamber, and the bottom of the cylinder is provided with a first air pipe joint communicated with the second chamber to form a first air path; the side wall of the cylinder is provided with a second vent pipe joint, the side wall of the cylinder is also internally provided with a gas path channel, one end of the gas path channel is communicated with the first cavity, and the other end of the gas path channel is communicated with the second vent pipe joint to form a second gas path; the second air path is continuously introduced with constant air pressure, the weight of the piston and the main blowing air pressure introduced during bottle blowing form downward constant pressure, the first air path is introduced with upward jacking air pressure which is higher than the constant pressure, and the air cylinder jacks upward; the first air passage stops introducing the top air pressure, and the air cylinder descends.

The bottom die cylinder device is characterized in that a first breather pipe joint communicated with the second cavity is arranged at the bottom of the cylinder to form a first air path; one end of an air passage channel arranged on the side wall of the cylinder is communicated with the first cavity, and a second air passage joint correspondingly arranged is communicated with the other end of the air passage channel to form a second air passage; when the bottle blowing control piston is pushed up, the second air passage is continuously introduced with constant air pressure, downward buffer pressure can be generated on the piston, the piston is enabled to be upward by controlling the air pressure introduced by the first air passage, and the damage to parts caused by overlarge impact force can be avoided while the shape of the bottle bottom is enabled to be intact by enough impact force; because the second air path continuously leads in air pressure, when the air supply of the first air path is stopped, the upward pressure of the piston is gradually reduced in the exhaust process of the first air path, the piston is slowly downward under the action of the constant air pressure of the second air path at the moment, and the piston can be slowly controlled to descend after the exhaust of the first air path is finished, so that the time interval of alternate ventilation and exhaust is saved, and the damage of parts caused by overlarge impact force is avoided; the device simple structure lets in atmospheric pressure through the second gas circuit continuously, makes the piston produce decurrent cushion effect, has avoided damaging the part because of the impact force is too big for equipment operation is more stable, has improved work efficiency.

Drawings

Fig. 1 is a structural view of a bottom die cylinder device in a lowest position state.

Fig. 2 is a structure view of a bottom die cylinder device in a middle position.

Fig. 3 is a structure view of the highest position of the bottom die cylinder device.

Detailed Description

As shown in fig. 1, 2 and 3, a bottom die cylinder device comprises a cylinder body (1), a piston (2) which can slide relative to the cylinder body and is arranged in the cylinder body (1), and a supporting seat (3) which penetrates through the top of the cylinder and is connected with the piston, wherein the cylinder is divided into two chambers by the piston, one end with the supporting seat is a first chamber (4), the other end without the supporting seat is a second chamber (5), and the bottom of the cylinder is provided with a first air pipe joint (6) which is communicated with the second chamber (5) to form a first air path; the side wall of the cylinder is provided with a second vent pipe connector (7), the side wall of the cylinder is also internally provided with a gas path channel (8), one end of the gas path channel (8) is communicated with the first cavity (4), and the other end of the gas path channel is communicated with the second vent pipe connector (7) to form a second gas path; the second air path is continuously introduced with constant air pressure (P1), the second air path forms downward constant pressure with the weight of the piston and the introduced main blowing air pressure (P2) during bottle blowing, the first air path is introduced with upward jacking air pressure (P3) which is higher than the constant pressure, and the air cylinder jacks upwards; the first air passage stops leading the top pressure (P3), and the air cylinder descends. The bottom die cylinder device is characterized in that a first breather pipe joint communicated with the second cavity is arranged at the bottom of the cylinder to form a first air path; one end of an air passage channel arranged on the side wall of the cylinder is communicated with the first cavity, and a second air passage joint correspondingly arranged is communicated with the other end of the air passage channel to form a second air passage; when the bottle blowing control piston is pushed up, the second air passage is continuously introduced with constant air pressure, downward buffer pressure can be generated on the piston, the piston is enabled to be upward by controlling the air pressure introduced by the first air passage, and the damage to parts caused by overlarge impact force can be avoided while the shape of the bottle bottom is enabled to be intact by enough impact force; because the second air path continuously leads in air pressure, when the air supply of the first air path is stopped, the upward pressure of the piston is gradually reduced in the exhaust process of the first air path, the piston is slowly downward under the action of the constant air pressure of the second air path at the moment, and the piston can be slowly controlled to descend after the exhaust of the first air path is finished, so that the time interval of alternate ventilation and exhaust is saved, and the damage of parts caused by overlarge impact force is avoided; the device simple structure lets in atmospheric pressure through the second gas circuit continuously, makes the piston produce decurrent cushion effect, has avoided damaging the part because of the impact force is too big for equipment operation is more stable, has improved work efficiency.

The bottom die air cylinder device controls the size of introduced air pressure by a proportion regulating valve, wherein the constant air pressure (P1), the main blowing air pressure (P2) and the upper top air pressure (P3) are controlled by the proportion regulating valve; the size of the upper ejection air pressure (P3) can be calculated according to the diameter of the bottom die and the upper impact force required by the piston to drive the bottom die to eject the bottle bottom into the concave bottom, namely the diameter of the bottom die is 64mm, and when the required upper impact force is X kg, according to the formula:

P3=(P2*3.2*3.2*3.14+P1*60+X)/(5.3*5.3*3.14-0.7*0.7*3.14*2)；

the calculated top gas pressure (P3) is accurately controlled by the proportion regulating valve, so that the impact force is further smaller, and the stability of the equipment is improved.

The bottom die cylinder device is characterized in that the supporting seat (3) is hollow. The hollow part in the supporting seat can be used for mounting bottom die structural parts, the weight can be reduced, the impact force is reduced, and the equipment can run more stably.

In the bottom die cylinder device, a wire arranging channel (9) is arranged in the piston (2), a guide pillar (10) with a hollow inner part is fixedly arranged at the wire arranging channel, a guide pillar opening (11) matched with the guide pillar (10) is arranged at the bottom of the cylinder body of the cylinder, the guide pillar extends out of the guide pillar opening, and the guide pillar can slide along with the piston; the arranged wire arranging channel and the guide pillar can be used for wiring of wires and signal lines, the complex structure of an oil way is omitted, the weight of the piston is reduced, the impact force is further reduced, and the service life is prolonged.

An annular groove is formed in the inner side of the guide post opening, an annular groove (12) is formed in the inner side of the guide post opening (11), and a sealing ring (13) and a guide ring (14) are mounted in the annular groove (12). In order to prevent air pressure leakage, a sealing ring and a guide ring are arranged at the joint of each part of the air cylinder, so that the air tightness of the device is ensured.

The bottom die air cylinder device is characterized in that an upper cushion pad (15) is arranged at the upper end inside the air cylinder. The upper cushion pad can further cushion the upper jacking pressure, and the stability of the parts of the device is improved. The piston lifting stroke can also be controlled by changing the thickness of the upper buffer cushion so as to adapt to different bottle heights.

The bottom die air cylinder device is characterized in that a lower cushion pad (16) is arranged at the lower end in the air cylinder. The lower cushion pad can further cushion the return pressure of the air cylinder, and the stability of parts of the device is improved.

The bottom die air cylinder device is characterized in that the bottom of an air cylinder body is also connected with a connecting block (17), and the middle part of the connecting block is also provided with a blind rivet (18). The lower part of the connecting block can be connected with a bottom die locking mechanism, and the connecting block and the bottom die locking mechanism can be quickly connected and fixed through a rivet.