A full-link bottom mold lifting mechanism for a single-opening bottle blowing machine

Abstract

The application discloses a full-link type bottom die lifting mechanism for a single-opening die of a bottle blowing machine, which comprises a die frame support, a bottom die support swing-connected to the die frame support, a first slider provided on the bottom die support and capable of being lifted, a second slider provided on the bottom die support and capable of sliding in a first direction, a connecting rod mechanism connected between the second slider and the first slider, and a first connecting rod having two ends rotatably connected to the die frame support and the second slider respectively; the connecting rod mechanism comprises a second connecting rod having one end rotatably connected to the second slider, a third connecting rod having one end rotatably connected to the other end of the second connecting rod, a fourth connecting rod having one end rotatably connected to the bottom die support, and a fifth connecting rod having two ends rotatably connected to the first slider and the other end of the fourth connecting rod respectively, and the third connecting rod is fixedly connected to the fourth connecting rod; the rotation planes of the second connecting rod, the third connecting rod, the fourth connecting rod and the fifth connecting rod are all parallel to a first plane. The bottom die lifting mechanism can precisely control the movement law of the bottom die.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bottle blowing, in particular to a full-link type bottom mold lifting mechanism for a single-opening mold of a bottle blowing machine. BACKGROUND

[0002] A bottle blowing machine is a key device for producing plastic bottles for packaging various liquids. The bottle blowing machine requires strict procedures and high coordination between procedures, especially the synchronous control of the bottom mold swing and lifting movement of a single-opening mold.

[0003] In the prior art, the linkage of the bottom mold swing and lifting movement is generally achieved by a cylindrical space cam mechanism. The advantages of the mechanism are: simple mechanism and few moving parts. The disadvantages of the mechanism are: 1) the design and machining precision of the cam flange or groove profile of the cylindrical space cam are high, the installation and positioning of the cam are difficult, and the rotor is prone to be stuck; 2) the contact surface between the rotor and the cylindrical space cam profile is prone to point contact, the pressure stress is large, and the rotor is prone to be damaged or the cam profile is prone to wear; 3) due to the limitation of space size, the pressure angle of the cylindrical space cam is usually large, and similarly, the rotor is prone to be damaged or the cam profile is prone to wear. SUMMARY

[0004] The purpose of the present application is to provide a full-link type bottom mold lifting mechanism for a single-opening mold of a bottle blowing machine, which can accurately control the movement law of the bottom mold, has small dynamic load, can effectively reduce the vibration and impact of the mechanism, reduce the wear of the parts, enhance the movement stability and reliability of the bottle blowing machine, and improve the high-speed performance of the whole machine.

[0005] To achieve the above purpose, the technical solution adopted by the present application is:

[0006] A full-link type bottom mold lifting mechanism for a single-opening mold of a bottle blowing machine, comprising a mold frame support, a bottom mold support swingably connected to the mold frame support about the axis of the first shaft, a first sliding block provided on the bottom mold support and being liftable, a second sliding block provided on the bottom mold support and being slidable in a first direction, a connecting rod mechanism connected between the second sliding block and the first sliding block, and a first connecting rod rotatably connected to the mold frame support and the second sliding block at both ends;

[0007] The connecting rod mechanism comprises a second connecting rod rotatably connected to the second sliding block, a third connecting rod rotatably connected to one end of the second connecting rod, a fourth connecting rod rotatably connected to the bottom mold support, and a fifth connecting rod rotatably connected to the first sliding block and the other end of the fourth connecting rod at both ends, and the third connecting rod is fixedly connected to the fourth connecting rod;

[0008] The rotation planes of the second connecting rod, the third connecting rod, the fourth connecting rod, and the fifth connecting rod are all parallel to the first plane and parallel to the first direction;

[0009] The rotation axis lines of the two ends of the first connecting rod are parallel to each other, parallel to the first plane, and perpendicular to the first direction.

[0010] Preferably, the first slider has an up position and a down position,

[0011] When the bottom mold support swings forward relative to the mold support, it drives the first connecting rod to rotate forward relative to the mold support, and the second slider slides forward along the first direction, and the first slider is driven by the connecting rod mechanism to drop to the down position.

[0012] When the bottom mold support swings backward relative to the mold support, it drives the first connecting rod to rotate backward relative to the mold support, and the second slider slides backward along the first direction, and the first slider is driven by the connecting rod mechanism to rise to the up position.

[0013] More preferably, when the bottom mold support swings forward relative to the mold support, the third connecting rod and the fourth connecting rod rotate forward as a whole relative to the bottom mold support; and when the bottom mold support swings backward relative to the mold support, the third connecting rod and the fourth connecting rod rotate backward as a whole relative to the bottom mold support.

[0014] Preferably, the fourth connecting rod is fixedly connected to the lower end of the third connecting rod through its lower end and is rotationally connected to the bottom mold support, and the fourth connecting rod and the third connecting rod are at an angle to each other.

[0015] Preferably, the bottom mold support includes a first guide rail extending in the vertical direction, and the first slider is arranged to slide on the first guide rail.

[0016] Preferably, the bottom mold support further includes a second guide rail extending in the horizontal direction, and the second slider is arranged to slide on the second guide rail.

[0017] More preferably, the lower end of the fourth connecting rod and the upper end of the fifth connecting rod are both located between the two ends of the second guide rail.

[0018] Preferably, the first slider and the first connecting rod are respectively arranged on the two sides of the second slider perpendicular to the first direction.

[0019] Preferably, the bottom mold support is driven to swing by an independent driving mechanism or a linkage mechanism linked to the movable side mold.

[0020] Preferably, the first slider is provided with a bottom mold, the mold support is provided with a side mold, and one of the bottom mold and the side mold is provided with a wedge-shaped ring groove, and the other is provided with a wedge-shaped clasp for clamping into the wedge-shaped ring groove.

[0021] When the mold is opened, the displacement of the bottom mold in the vertical direction controlled by the bottom mold lifting mechanism is less than the gap between the wedge-shaped clasp ring and the wedge-shaped ring groove before the wedge-shaped ring groove and the wedge-shaped clasp ring are completely separated, forming an approximate rest period of the bottom mold movement in the vertical direction; after the wedge-shaped ring groove and the wedge-shaped clasp ring are separated, the bottom mold lifting mechanism controls the bottom mold to descend a large displacement in the vertical direction, so that the bottle taking movement of the bottle taking mechanism does not interfere with the bottom mold.

[0022] When the mold is closed, with the swing of the bottom mold support, the bottom mold lifting mechanism controls the bottom mold to ascend a large displacement in the vertical direction until the wedge-shaped clasp ring can enter the wedge-shaped ring groove; after the wedge-shaped clasp ring enters the wedge-shaped ring groove, the displacement of the bottom mold in the vertical direction controlled by the bottom mold lifting mechanism is less than the gap between the wedge-shaped clasp ring and the wedge-shaped ring groove, forming an approximate rest period of the bottom mold movement in the vertical direction.

[0023] Due to the use of the above technical solutions, the present application has the following advantages compared with the prior art: the full-link type bottom mold lifting mechanism for the single-opening mold of the bottle blowing machine drives the first sliding block to ascend and descend through the sliding of the second sliding block and the cooperation of the link mechanism during the swing of the bottom mold support; since the rotation planes of the four links in the link mechanism are all parallel to the first plane, the installation and positioning difficulty is small; on the basis of vibration reduction, noise reduction, stable and reliable structure, not only the part processing difficulty is reduced, but also the running speed of the whole machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] FIG. 1 is a perspective view of a bottom mold lifting mechanism according to an embodiment of the present application (mold closing state); Figure 1 is an axial view of the bottom mold lifting mechanism according to the embodiment of the present application (mold closing state); Figure 1 FIG. 2 is a perspective view of a bottom mold lifting mechanism according to an embodiment of the present application (mold opening state);

[0025] FIG. 3 is an axial view of the bottom mold lifting mechanism according to the embodiment of the present application (mold opening state); Figure 2 is an axial view of the bottom mold lifting mechanism according to the embodiment of the present application (mold opening state); Figure 2 FIG. 4 is a front view of a bottom mold lifting mechanism according to an embodiment of the present application (mold closing state and hiding the mold support);

[0026] FIG. 5 is a front view of a bottom mold lifting mechanism according to an embodiment of the present application (mold opening state and hiding the mold support). Figure 3 Figure 1 FIG. 6 is a front view of a bottom mold lifting mechanism according to an embodiment of the present application (mold closing state and hiding the mold support);

[0027] FIG. 7 is a front view of a bottom mold lifting mechanism according to an embodiment of the present application (mold opening state and hiding the mold support). Figure 4 Figure 2 FIG. 8 is a front view of a bottom mold lifting mechanism according to an embodiment of the present application (mold opening state and hiding the mold support).

[0028] ​​Wherein: 1, die frame support; 2, first shaft; 3, bottom die support; 31, first guide rail; 32, second guide rail; 33, connecting block; 4, first slider; 5, second slider; 6, first connecting rod; 7, second connecting rod; 8, third connecting rod; 9, fourth connecting rod; 10, fifth connecting rod; 11, second shaft. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be further described below in combination with specific embodiments and drawings.

[0030] Referring to Figures 1-4 The embodiment provides a full connecting rod type bottom die lifting mechanism for a single opening die of a bottle blowing machine, which comprises a die frame support 1, a bottom die support 3 swingably connected to the die frame support 1 about an axis of a first shaft 2, a first slider 4 provided on the bottom die support 3 and capable of being lifted, and a second slider 5 provided on the bottom die support 3 and capable of sliding in a first direction. The first shaft 2 extends in a vertical direction.

[0031] A movable side die and a fixed side die (not shown in the figure) are respectively mounted on the die frame support 1, and the bottom die support 3 is driven to swing by an independent driving mechanism or a linkage mechanism linked to the movable side die. The first slider 4 is used for mounting a bottom die, and the sliding direction of the first slider 4 extends in a vertical direction, and the sliding direction of the second slider (i.e. the first direction) extends in a horizontal direction.

[0032] The above-mentioned bottom die lifting mechanism further comprises a connecting rod mechanism connected between the second slider 5 and the first slider 4, and a first connecting rod 6 rotationally connected at two ends to the die frame support 1 and the second slider 5 respectively.

[0033] The above-mentioned connecting rod mechanism comprises a second connecting rod 7 rotationally connected at one end to the second slider 5, a third connecting rod 8 rotationally connected at one end to the other end of the second connecting rod 7, a fourth connecting rod 9 rotationally connected at one end to the bottom die support 3, and a fifth connecting rod 10 rotationally connected at two ends to the first slider 4 and the other end of the fourth connecting rod 9 respectively, and the third connecting rod 8 is fixedly connected to the fourth connecting rod 9.

[0034] Referring to Figures 3-4 The fourth connecting rod 9 is fixedly connected to the lower end of the third connecting rod 8 through the lower end thereof and is rotationally connected to the bottom die support 3, and the fourth connecting rod 9 and the third connecting rod 8 are at an angle with each other, and the angle is an acute angle. The upper end of the second connecting rod 7 is rotationally connected to the second slider 5, the lower end of the second connecting rod 7 is rotationally connected to the upper end of the third connecting rod 8, the upper end of the fifth connecting rod 10 is rotationally connected to the first slider 4, and the lower end of the fifth connecting rod 10 is rotationally connected to the upper end of the fourth connecting rod 9.

[0035] The lower end of the fourth connecting rod 9 and the upper end of the fifth connecting rod 10 are both located between the two ends of the second guide rail 32.

[0036] The rotating planes of the second link 7, the third link 8, the fourth link 9 and the fifth link 10 are parallel to the first plane and the first direction. In the embodiment, the first plane is a vertical plane.

[0037] The rotating axes of the two ends of the first link 6 are parallel to each other, the first plane and the first direction.

[0038] Referring to Figure 1 In the embodiment, the bottom mold support 3 includes a first guide rail 31 extending in the vertical direction, and the first slider 4 is arranged on the first guide rail 31 to slide. The bottom mold support 3 also includes a second guide rail 32 extending in the horizontal direction, and the second slider 5 is arranged on the second guide rail 32 to slide. The second guide rail 32 has two second guide rails 32 arranged in the up-down direction, and the second slider 5 is sleeved on the two second guide rails 32. The upper end of the bottom mold support 3 is concave, and the two ends of the second guide rail 32 are connected to the two sides of the concave portion, and the first guide rail 31, the first slider 4, the fifth link 10 and the fourth link 9 are all arranged in the concave portion, and the two sides of the concave portion limit the two ends of the second slider 5. Through this arrangement, the components in the concave portion are protected.

[0039] Referring to Figure 1 The bottom mold support 3 is connected to the mold support 1 by the connecting block 33 at the lower end of the bottom mold support 3 around the axis of the first shaft 2, and the first link 6 is connected to the mold support 1 by the second shaft 11 around the axis of the second shaft 11. The first shaft 2 and the second shaft 11 both extend in the vertical direction, and the first shaft 2 is located to the left of the second shaft 11.

[0040] Referring to Figure 1 The first link 6 extends in the horizontal direction, and the rotating axes of the two ends of the first link 6 extend in the vertical direction. The first slider 4 and the first link 6 are arranged on the two sides of the second slider 5 perpendicular to the first direction, i.e. the first slider 4 is located in the concave portion of the bottom mold support 3, and the first link 6 is located outside the concave portion of the bottom mold support 3.

[0041] The first slider 4 has a raised position (see Figure 1 , Figure 3 ) and a lowered position (see Figure 2 , Figure 4 ).

[0042] When the bottom mold support 3 rotates forward (counterclockwise) relative to the mold support 1, it drives the first link 6 to rotate forward (counterclockwise) relative to the mold support 1, so that the second slider 5 slides forward in the first direction, the third link 8 and the fourth link 9 rotate forward (counterclockwise) relative to the bottom mold support 3 as a whole, and the first slider 4 is lowered to the lowered position through the linkage mechanism;

[0043] When the bottom mold support 3 swings relative to the mold support 1 in the reverse direction (clockwise), the first connecting rod 6 is driven to rotate relative to the mold support 1 in the reverse direction (clockwise), so that the second sliding block 5 slides in the reverse direction of the first direction, the third connecting rod 8 and the fourth connecting rod 9 rotate relative to the bottom mold support 3 in the reverse direction (clockwise) as a whole, and the first sliding block 4 is driven to rise to the raised position through the connecting rod mechanism.

[0044] The first sliding block 4 is provided with a bottom mold (not shown in the figure), and the mold support 1 is provided with a side mold (not shown in the figure, including a movable side mold and a fixed side mold). The bottom mold and the side mold are provided with a wedge-shaped ring groove on one and a wedge-shaped clasp for clamping into the wedge-shaped ring groove on the other;

[0045] When the mold is opened, before the wedge-shaped ring groove and the wedge-shaped clasp are completely separated, the bottom mold lifting mechanism controls the displacement of the bottom mold in the vertical direction to be less than the gap between the wedge-shaped clasp and the wedge-shaped ring groove, forming an approximate rest period of the movement of the bottom mold in the vertical direction; after the wedge-shaped ring groove and the wedge-shaped clasp are separated by the swing of the bottom mold support 3, the bottom mold lifting mechanism controls the bottom mold to descend a large displacement in the vertical direction, so that the bottle taking movement of the bottle taking mechanism does not interfere with the bottom mold;

[0046] When the mold is closed, as the bottom mold support 3 swings, the bottom mold lifting mechanism controls the bottom mold to rise a large displacement in the vertical direction until the wedge-shaped clasp can enter the wedge-shaped ring groove; after the wedge-shaped clasp enters the wedge-shaped ring groove, the bottom mold lifting mechanism controls the displacement of the bottom mold in the vertical direction to be less than the gap between the wedge-shaped clasp and the wedge-shaped ring groove, forming an approximate rest period of the movement of the bottom mold in the vertical direction.

[0047] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A full-link bottom mold lifting mechanism for a single-action bottle blowing machine, comprising a mold frame support, a bottom mold support swingably connected to the mold frame support about an axis of a first shaft, and a first slide block provided on the bottom mold support and being liftable, characterized in that: The bottom die lifting mechanism further comprises a second sliding block arranged on the bottom die support and slidable in the first direction, a linkage mechanism connected between the second sliding block and the first sliding block, and a first linkage having two ends rotatably connected with the die support and the second sliding block respectively; The linkage mechanism comprises a second linkage having one end rotatably connected with the second sliding block, a third linkage having one end rotatably connected with the other end of the second linkage, a fourth linkage having one end rotatably connected with the bottom die support, and a fifth linkage having two ends rotatably connected with the first sliding block and the other end of the fourth linkage respectively, and the third linkage is fixedly connected with the fourth linkage; the rotation planes of the second, third, fourth and fifth linkages are parallel to the first plane and the first direction; The rotation axes of the two ends of the first linkage are parallel to each other, the first plane and the first direction; The first sliding block has an ascending position and a descending position, When the bottom die support swings forward relative to the die support, the first linkage is driven to rotate forward relative to the die support, the second sliding block slides forward in the first direction, and the first sliding block is driven to descend to the descending position by the linkage mechanism; When the bottom die support swings backward relative to the die support, the first linkage is driven to rotate backward relative to the die support, the second sliding block slides backward in the first direction, and the first sliding block is driven to ascend to the ascending position by the linkage mechanism; The first sliding block and the first linkage are arranged on the two sides of the second sliding block perpendicular to the first direction respectively; The bottom die support comprises a first guide rail extending in the vertical direction, and the first sliding block slides on the first guide rail; the bottom die support further comprises a second guide rail extending in the horizontal direction, and the second sliding block slides on the second guide rail; The upper end of the bottom die support is concave, and the second guide rail is connected with the two sides of the concave portion by its two ends, and the first guide rail, the first sliding block, the fifth linkage and the fourth linkage are all arranged in the concave portion.

2. A full link type bottom mold lifting mechanism for a single action mold of a bottle blowing machine according to claim 1, characterized in that: When the bottom die support swings forward relative to the die support, the third linkage and the fourth linkage are driven to rotate forward relative to the bottom die support as a whole; when the bottom die support swings backward relative to the die support, the third linkage and the fourth linkage are driven to rotate backward relative to the bottom die support as a whole.

3. A full link type bottom mold lifting mechanism for a single action mold of a bottle blowing machine according to claim 1, characterized in that: The fourth linkage is fixedly connected with the lower end of the third linkage by its lower end and rotatably connected with the bottom die support, and the fourth linkage and the third linkage are at an angle with each other.

4. A full link type bottom mold lifting mechanism for a single action mold of a bottle blowing machine according to claim 1, characterized in that: The lower end of the fourth linkage and the upper end of the fifth linkage are both located between the two ends of the second guide rail.

5. A full link type bottom mold lifting mechanism for a single action mold of a bottle blowing machine according to claim 1, characterized in that: The bottom die support is driven to swing by an independent driving mechanism or a linkage mechanism linked with the movable side die.

6. A full link type bottom mold lifting mechanism for a single action mold of a bottle blowing machine according to claim 1, characterized in that: The first sliding block is provided with a bottom die, the die support is provided with a side die, and one of the bottom die and the side die is provided with a wedge-shaped ring groove, and the other is provided with a wedge-shaped clamping ring for clamping into the wedge-shaped ring groove. When the mold is opened, the displacement of the bottom mold in the vertical direction controlled by the bottom mold lifting mechanism is less than the gap between the wedge-shaped clasp and the wedge-shaped ring groove before the bottom mold support swings until the wedge-shaped ring groove is completely separated from the wedge-shaped clasp, forming an approximate rest period of the bottom mold movement in the vertical direction; after the bottom mold support swings until the wedge-shaped ring groove is separated from the wedge-shaped clasp, the bottom mold lifting mechanism controls the bottom mold to descend a large displacement in the vertical direction, so that the bottle taking movement of the bottle taking mechanism does not interfere with the bottom mold; When the mold is closed, as the bottom mold support swings, the bottom mold lifting mechanism controls the bottom mold to ascend a large displacement in the vertical direction until the wedge-shaped clasp can enter the wedge-shaped ring groove; after the wedge-shaped clasp enters the wedge-shaped ring groove, the displacement of the bottom mold in the vertical direction controlled by the bottom mold lifting mechanism is less than the gap between the wedge-shaped clasp and the wedge-shaped ring groove, forming an approximate rest period of the bottom mold movement in the vertical direction.

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