Bottle blowing machine mold sealing cam driving mechanism and mounting method thereof

Abstract

The invention discloses a bottle blowing machine mold sealing cam driving mechanism and a mounting method thereof.The bottle blowing machine mold sealing cam driving mechanism comprises a lifting cam, the lifting cam is provided with an ascending wheel face, a stopping wheel face and a descending wheel face and further provided with an auxiliary cam, the auxiliary cam is arranged above the front end of the descending wheel face, and when a lifting roller leaves the stopping wheel face and rolls backwards to the descending wheel face, the auxiliary cam is driven to rotate; and the auxiliary cam can limit the lifting roller, so that the lifting roller can roll close to the descending wheel surface. According to the mold sealing cam driving mechanism, when the lifting roller leaves the rest wheel surface and backwards rolls to the descending wheel surface, the lifting roller can be subjected to upper limiting through the auxiliary cam, so that the adverse effect caused by the increase of the friction force between the lifting cylinder and the high-pressure valve can be overcome; and the lifting roller can roll close to the descending wheel surface after leaving the rest wheel surface, so that impact and noise are avoided, the service lives of the lifting cam and the lifting roller are prolonged, and the running stability of the whole bottle blowing machine is improved.

Description

Technical Field

[0001] The invention relates to the field of bottle blowing machines, and in particular to a bottle blowing machine mold sealing cam driving mechanism. Background Art

[0002] Before the bottle blowing machine blows the bottle, the head needs to seal the mold. Since the head must ensure that it does not interfere with the manipulator during the lifting movement, its lifting rule is generally controlled by the lifting cam. The lifting cam is long and fixed on the frame of the bottle blowing machine. The lifting cam is provided with an ascending wheel surface, a resting wheel surface, and a descending wheel surface. The lifting rollers of the heads in each bottle blowing unit in the bottle blowing machine will circulate from front to back and pass through the ascending wheel surface, the resting wheel surface, and the descending wheel surface in turn under the drive of the main shaft of the bottle blowing machine and roll on each wheel surface. At this time, the lifting cylinder in the bottle blowing unit will press the lifting roller under the action of low-pressure gas, so that the lifting roller can roll against the lifting cam. When the lifting roller rolls on the ascending wheel surface, the ascending wheel surface will gradually lift the lifting roller to raise the head. When the lifting roller rolls on the resting wheel surface, the head will maintain the same height. When the lifting roller rolls on the descending wheel surface, the descending wheel surface will gradually lower the lifting roller to lower the head.

[0003] The force exerted by low-pressure gas on the lifting cylinder is certain. When the friction between the lifting cylinder and the high-pressure valve increases due to the influence of grease, etc., it may cause insufficient pressing force on the lifting roller. When the lifting roller leaves the rest wheel surface and rolls to the descending wheel surface, due to insufficient pressing force of the lifting cylinder, the lifting roller will fly away from the lifting cam in a short time because the descending acceleration is less than the acceleration of the lifting cam. Then, the lifting roller will quickly fall on the descending wheel surface under the action of the lifting cylinder. At this time, the lifting roller will have a great impact on the descending wheel surface, which will produce a lot of noise and affect the life of the lifting cam. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bottle blowing machine mold sealing cam driving mechanism which can make the lifting roller always roll closely against the lifting cam.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is: a sealing cam driving mechanism of a bottle blowing machine mold, comprising: a lifting cam fixed on a bottle blowing machine frame, on which an ascending wheel surface, a rest wheel surface and a descending wheel surface are arranged, and the characteristic is that an auxiliary cam is also arranged, and a limiting wheel surface is arranged on the lower side of the auxiliary cam, and the auxiliary cam is arranged above the upper end of the descending wheel surface. When the lifting roller leaves the rest wheel surface and rolls backward to the descending wheel surface, the limiting wheel surface on the auxiliary cam can limit the lifting roller, so that the lifting roller can roll close to the descending wheel surface.

[0006] Furthermore, in the aforementioned bottle blowing machine mold sealing cam driving mechanism, the auxiliary cam is fixed to the lifting cam.

[0007] Furthermore, the aforementioned bottle blowing machine mold sealing cam driving mechanism, wherein: two height adjusting units that can adjust the height of the auxiliary cam are provided on the lifting cam, the two height adjusting units are arranged side by side, and the two height adjusting units are respectively connected to the front and rear ends of the auxiliary cam, and the structure of each height adjusting unit includes: a connecting seat, a connecting shaft, a gasket, and an upper nut. The lower end of the connecting seat is fixed to the outer side surface of the lifting cam, and a horizontal plate that is horizontal to the top of the lifting cam is provided on the upper end of the connecting seat. A flat head, an upper threaded section, a positioning boss, and a lower threaded section are sequentially provided on the connecting shaft from top to bottom. The connecting shaft is vertically penetrated on the horizontal plate, the positioning boss is located below the horizontal plate, and the gasket is placed between the positioning boss and the horizontal plate. The upper nut is threadedly connected to the upper threaded section and rotated downward to abut against the upper surface of the horizontal plate, the positioning boss abuts against the gasket, and the gasket abuts against the lower surface of the horizontal plate. The connecting shaft is threadedly connected to the auxiliary cam through the lower threaded section, and the height of the auxiliary cam can be adjusted by adjusting the thickness of the gasket or increasing or decreasing the number of gaskets.

[0008] Furthermore, in the aforementioned bottle blowing machine mold sealing cam driving mechanism, a lower nut is also provided in the height adjustment unit, the lower nut is threadedly connected to the lower thread segment, and rotates downward to abut against the upper surface of the auxiliary cam to tighten the auxiliary cam.

[0009] Furthermore, in the aforementioned bottle blowing machine mold sealing cam driving mechanism, a guiding slope is provided on the lower side of the front end of the auxiliary cam, and the guiding slope can guide the lifting roller to enter between the auxiliary cam and the descending wheel surface.

[0010] The installation method of the sealing cam drive mechanism of the bottle blowing machine mold is as follows: (1) Install the lifting cam on the frame of the bottle blowing machine. At this time, the connecting seats in the two height adjustment units are fixed on the lifting cam; (2) Screw the two lower nuts onto the lower threaded sections of their respective connecting shafts; (3) Clamp the flat head on the connecting shaft with a wrench to drive the connecting shaft to rotate, so that the two connecting shafts are screwed into the threaded holes on the front and rear ends of the auxiliary cam through their respective lower threaded sections until they reach the bottom, so that the two connecting shafts are respectively vertically threadedly connected to the front and rear ends of the auxiliary cam; (4) Rotate and drive the two lower nuts to move downward until the two lower nuts respectively abut against the auxiliary cams and tighten the auxiliary cams; at this time, the two positioning bosses are at the same height; (5) The two connecting shafts are respectively passed through the corresponding horizontal plates vertically from bottom to top, and then the two upper nuts are respectively screwed onto the upper threaded sections of the respective connecting shafts, and then the two upper nuts are driven to rotate downward until they abut against the upper surfaces of the corresponding horizontal plates, and the two positioning bosses abut against the lower surfaces of the corresponding horizontal plates; (6) Start the bottle blowing machine, make the lifting roller enter between the auxiliary cam and the descending wheel surface of the lifting cam, and then measure the installation gap between the lifting roller and the limiting wheel surface on the auxiliary cam; prepare two gasket sets with the same thickness as the installation gap, which can be a thick gasket or a plurality of thin gaskets stacked together; (7) Clamp the flat heads of the two connecting shafts and loosen the two upper nuts to create gaps between the two positioning bosses and their corresponding cross plates. Then insert the two gasket sets into the two gaps respectively. Then clamp the flat heads of the two connecting shafts and tighten the two upper nuts so that the two gasket sets are clamped respectively. At this time, the auxiliary cam is installed.

[0011] The advantages of the present invention are as follows: the mold sealing cam driving mechanism can use the auxiliary cam to upper limit the lifting roller when the lifting roller leaves the rest wheel surface and rolls backward to the descending wheel surface, thereby overcoming the adverse effects caused by the increased friction between the lifting cylinder and the high-pressure valve, so that the lifting roller can roll closely against the descending wheel surface after leaving the rest wheel surface, avoiding impact and noise, extending the service life of the lifting cam and the lifting roller, and increasing the stability of the overall operation of the bottle blowing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the bottle blowing machine mold sealing cam driving mechanism of the present invention.

[0013] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure.

[0014] Figure 3 for Figure 2 Schematic diagram of the structure of the connecting shaft. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with specific embodiments and drawings.

[0016] like Figure 1 , Figure 2 , Figure 3As shown, the sealing cam driving mechanism of the bottle blowing machine mold includes: a long strip-shaped lifting cam 1 fixed on the frame of the bottle blowing machine, on which an ascending wheel surface 2, a resting wheel surface 3, and a descending wheel surface 4 are arranged, and an auxiliary cam 5 is also arranged. A limiting wheel surface is arranged on the lower side of the auxiliary cam 5, and the auxiliary cam 5 is arranged above the front end of the descending wheel surface 4. When the lifting roller leaves the resting wheel surface 3 and rolls backward to the descending wheel surface 4, the limiting wheel surface on the auxiliary cam 5 can upper limit the lifting roller, so that the lifting roller can roll closely against the descending wheel surface 4.

[0017] In this embodiment, for the convenience of installation, the auxiliary cam 5 is fixed to the lifting cam 1. Two height adjustment units 6 that can adjust the height of the auxiliary cam 5 are arranged on the lifting cam 1. The two height adjustment units 6 are arranged side by side, and the two height adjustment units 6 are respectively connected to the front and rear ends of the auxiliary cam 5. The structure of each height adjustment unit 6 includes: a connecting seat 7, a connecting shaft 9, a gasket 17, and an upper nut 14. The lower end of the connecting seat 7 is fixed to the outer side of the lifting cam 1. The upper end of the connecting seat 7 is provided with a horizontal plate 8 that is horizontal to the upper part of the lifting cam 1. The connecting shaft 9 is provided with a flat head 11, an upper threaded section 12, a positioning boss 10, The lower threaded section 13, the connecting shaft 9 is vertically penetrated on the horizontal plate 8, the positioning boss 10 is located below the horizontal plate 8, the gasket 17 is placed between the positioning boss 10 and the horizontal plate 8, the upper nut 14 is threadedly connected to the upper threaded section 12, and rotated downward to abut against the upper surface of the horizontal plate 8, the positioning boss 10 abuts against the gasket 17, the gasket 17 abuts against the lower surface of the horizontal plate 8, the connecting shaft 9 is threadedly connected to the auxiliary cam 5 through the lower threaded section 13, and the height of the auxiliary cam 5 can be adjusted by adjusting the thickness of the gasket 17 or increasing or decreasing the number of gaskets 17. The flat head 11 is provided to facilitate the connection shaft 9 to be screwed by a wrench.

[0018] The height adjustment unit 6 is further provided with a lower nut 15 , which is threadedly connected to the lower threaded section 13 and rotates downward to abut against the upper surface of the auxiliary cam 5 to tighten the auxiliary cam 5 .

[0019] A guide slope 16 is provided on the lower side of the front end of the auxiliary cam 5 , and the guide slope 16 can guide the lifting roller to enter between the auxiliary cam 5 and the descending wheel surface 4 .

[0020] The installation method of the bottle blowing machine mold sealing cam driving mechanism is as follows: (1) Install the lifting cam 1 on the frame of the bottle blowing machine. At this time, the connecting seats 7 in the two height adjustment units 6 are fixed on the lifting cam 1; (2) Screw the two lower nuts 15 onto the lower threaded sections 13 of their respective connecting shafts 9; (3) Clamp the flat head 11 on the connecting shaft 9 with a wrench to drive the connecting shaft 9 to rotate, so that the two connecting shafts 9 are screwed into the threaded holes on the front and rear ends of the auxiliary cam 5 through their respective lower threaded sections 13 and until they bottom out, so that the two connecting shafts 9 are respectively vertically threadedly connected to the front and rear ends of the auxiliary cam 5; (4) The two lower nuts 15 are rotated to move downward until the two lower nuts 15 respectively abut against the auxiliary cam 5 and tighten the auxiliary cam 5; at this time, the two positioning bosses 10 are at the same height; (5) The two connecting shafts 9 are respectively passed vertically from bottom to top through the corresponding transverse plates 8, and then the two upper nuts 14 are respectively screwed onto the upper threaded sections 12 of the respective connecting shafts 9, and then the two upper nuts 14 are driven to rotate downward until they abut against the upper surfaces of the corresponding transverse plates 8, and the two positioning bosses 10 abut against the lower surfaces of the corresponding transverse plates 8; (6) Start the bottle blowing machine, make the lifting roller enter between the auxiliary cam 5 and the descending wheel surface 4 of the lifting cam 1, and then measure the installation gap between the lifting roller and the limiting wheel surface on the auxiliary cam 5; prepare two gasket sets with the same thickness as the installation gap, and the gasket set can be a thick gasket or a plurality of thin gaskets stacked together; (7) Clamp the flat heads 11 of the two connecting shafts 9 and loosen the two upper nuts 14 to create gaps between the two positioning bosses 10 and their corresponding cross plates 8. Then, insert the two gasket sets into the two created gaps respectively. Then, clamp the flat heads 11 of the two connecting shafts 9 and tighten the two upper nuts 14 so that the two gasket sets are clamped respectively. At this time, the auxiliary cam 5 is installed.

Claims

1. Bottle blowing machine mold sealing cam drive mechanism, including: A lifting cam fixed on the frame of the bottle blowing machine is provided with an ascending wheel surface, a resting wheel surface and a descending wheel surface, and is characterized in that an auxiliary cam is also provided, a limiting wheel surface is provided on the lower side of the auxiliary cam, and the auxiliary cam is provided above the end of the descending wheel surface. When the lifting roller leaves the resting wheel surface and rolls backward to the descending wheel surface, the limiting wheel surface on the auxiliary cam can upper limit the lifting roller, so that the lifting roller can roll closely against the descending wheel surface.

2. The bottle blowing machine mold sealing cam driving mechanism according to claim 1, characterized in that: The auxiliary cam is fixed to the lifting cam.

3. The bottle blowing machine mold sealing cam driving mechanism according to claim 2, characterized in that: The lifting cam is provided with two height-adjusting units that can adjust the height of the auxiliary cam. The two height-adjusting units are arranged side by side, and the two height-adjusting units are respectively connected to the front and rear ends of the auxiliary cam. The structure of each height-adjusting unit includes: a connecting seat, a connecting shaft, a gasket, and an upper nut. The lower end of the connecting seat is fixed to the outer side surface of the lifting cam, and the upper end of the connecting seat is provided with a horizontal plate that is horizontal to the top of the lifting cam. A flat head, an upper threaded section, a positioning boss, and a lower threaded section are sequentially arranged on the connecting shaft from top to bottom. The connecting shaft is vertically penetrated on the horizontal plate, the positioning boss is located below the horizontal plate, and the gasket is placed between the positioning boss and the horizontal plate. The upper nut is threadedly connected to the upper threaded section and rotated downward to abut against the upper surface of the horizontal plate, the positioning boss abuts against the gasket, and the gasket abuts against the lower surface of the horizontal plate. The connecting shaft is threadedly connected to the auxiliary cam through the lower threaded section, and the height of the auxiliary cam can be adjusted by adjusting the thickness of the gasket or increasing or decreasing the number of gaskets.

4. The bottle blowing machine mold sealing cam driving mechanism according to claim 3, characterized in that: The height adjustment unit is also provided with a lower nut, which is threadedly connected to the lower thread section and rotates downward to abut against the upper surface of the auxiliary cam and tighten the auxiliary cam.

5. The bottle blowing machine mold sealing cam driving mechanism according to claim 1, 2, 3 or 4, characterized in that: A guiding slope is arranged on the lower side of the front end of the auxiliary cam, and the guiding slope can guide the lifting roller to enter between the auxiliary cam and the descending wheel surface.

6. The method for installing the sealing cam driving mechanism of the bottle blowing machine mold according to claim 4, characterized in that: The installation method is as follows: (1) Install the lifting cam on the frame of the bottle blowing machine. At this time, the connecting seats in the two height adjustment units are fixed on the lifting cam; (2) Screw the two lower nuts onto the lower threaded sections of their respective connecting shafts; (3) Clamp the flat head on the connecting shaft with a wrench to drive the connecting shaft to rotate, so that the two connecting shafts are screwed into the threaded holes on the front and rear ends of the auxiliary cam through their respective lower threaded sections until they reach the bottom, so that the two connecting shafts are respectively vertically threadedly connected to the front and rear ends of the auxiliary cam; (4) Rotate and drive the two lower nuts to move downward until the two lower nuts respectively abut against the auxiliary cams and tighten the auxiliary cams; at this time, the two positioning bosses are at the same height; (5) The two connecting shafts are respectively passed through the corresponding horizontal plates vertically from bottom to top, and then the two upper nuts are respectively screwed onto the upper threaded sections of the respective connecting shafts, and then the two upper nuts are driven to rotate downward until they abut against the upper surfaces of the corresponding horizontal plates, and the two positioning bosses abut against the lower surfaces of the corresponding horizontal plates; (6) Start the bottle blowing machine, make the lifting roller enter between the auxiliary cam and the descending wheel surface of the lifting cam, and then measure the installation gap between the lifting roller and the limiting wheel surface on the auxiliary cam; prepare two gasket sets with the same thickness as the installation gap, which can be a thick gasket or a plurality of thin gaskets stacked together; (7) Clamp the flat heads of the two connecting shafts and loosen the two upper nuts to create gaps between the two positioning bosses and their corresponding cross plates. Then insert the two gasket sets into the two gaps respectively. Then clamp the flat heads of the two connecting shafts and tighten the two upper nuts so that the two gasket sets are clamped respectively. At this time, the auxiliary cam is installed.

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