CN108145951B - Bottle blowing machine and locking method for left and right dies of bottle blowing machine - Google Patents

Bottle blowing machine and locking method for left and right dies of bottle blowing machine Download PDF

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Publication number
CN108145951B
CN108145951B CN201711407044.6A CN201711407044A CN108145951B CN 108145951 B CN108145951 B CN 108145951B CN 201711407044 A CN201711407044 A CN 201711407044A CN 108145951 B CN108145951 B CN 108145951B
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Prior art keywords
die
shaft
mold
driving
locking
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CN108145951A (en
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王巍植
曹金山
童微
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Demark Changxing Injection System Co ltd
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Demark Changxing Injection System Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/56—Opening, closing or clamping means
    • B29C2049/566—Locking means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention relates to a bottle blowing machine and a locking method of left and right molds of the bottle blowing machine, comprising a mold frame support, a right mold, a left mold, an opening and closing mold control mechanism, a bottom mold lifting control mechanism and a left and right mold locking mechanism, wherein the left mold is provided with at least one left connecting boss, a pin hole is arranged on the left connecting boss, the right mold is provided with a right connecting boss matched with the left connecting boss, the left and right mold locking mechanism comprises a mold locking shaft penetrating through the right connecting boss, a mold locking pin linked with the mold locking shaft rotates a lever arranged on the right mold through the hinge shaft, an elastic support piece and a driving swing shaft are movably arranged on the hinge shaft in a penetrating way, a spring is further arranged between the upper end of the mold locking shaft and the right connecting boss, the driving swing shaft is hinged to the lower part of the right mold, one end of the driving swing shaft drives the mold locking shaft to move up and down, the other end of the driving swing shaft is hinged to one end of the lever, one end of the elastic support piece is hinged to the other end of the lever, and the other end of the elastic support piece is hinged to the right mold; the left and right die locking mechanism has low noise, easy adjustment and long service life.

Description

Bottle blowing machine and locking method for left and right dies of bottle blowing machine
Technical Field
The invention relates to the field of liquid packaging equipment, in particular to a bottle blowing machine and a locking method of left and right dies of the bottle blowing machine.
Background
The up-and-down motion of the bottom die and the motion of the left half die and the right half die of the existing rotary large die frame bottle blowing machine are respectively controlled by cam guide rails, and when the die frame rotates along with a rotary main body, the following continuous inertia motion exists: putting in bottle blank, lifting the bottom die, closing the left die and the right die, blowing the bottle, opening the right die frame, lowering the bottom die, taking out the bottle, and the actions are circulated to continuously carry out production.
In the conventional rotary large die frame bottle blowing machine shown in fig. 1 and 2, a swing arm 8 and a swing rod 10 are fixedly connected through a swing shaft 11, the swing rod can control the opening and closing actions of a left die 3 and a right die 2 through a connecting rod 9 hinged to the left die 3 and the right die 2, the other end of the swing arm is connected with an opening and closing die roller 7 for enabling the swing arm to swing, the opening and closing die roller 7 is driven by an opening and closing die cam guide rail (not shown in the figure), the bottom end of a bottom die support 4 is also connected with a bottom die roller 5, and the bottom die roller 5 is controlled to move up and down by the bottom die cam guide rail 6.
The existing rotary bottle blowing machine mainly has the following defects: 1. the bottom die cam guide rail controls the bottom dies of the die cavities, and the height of the bottom die is not easy to adjust to be consistent. 2. The bottom die cam guide rail is in a curve non-closed state, and when the bottom die roller enters and exits the bottom die cam guide rail, noise always exists, and the higher the yield is, the larger the noise is.
In addition, the left and right molds of the existing rotary bottle blowing machine are generally locked by adopting a spring ejector rod mechanism, when the left and right molds are in an open state, the mold locking shaft is locked by the ejector rods, when the left and right molds are in a closed state, the mold unlocking shaft is released by the ejector rods, and the left and right molds are locked upwards by the lock pins;
as shown in fig. 7, when the left mold 3 and the right mold 2 are in an open state, the ejector rod 23 locks the counter bore of the mold locking shaft 22 through the shoulder part thereof, so that the mold locking shaft 22 is always at the bottom, and the connecting rod 24 and the mold locking pin 25 connected with the mold locking shaft are in a bottom state; as shown in fig. 8, when the left die 3 and the right die 2 are combined, the collision block 27 triggers the ejector rod 23, so that the locking state of the locking pin 25 is released to move upwards, and the connecting rod 24 and the locking pin 25 are driven to lock the left die 3 and the right die 2 upwards; the left die 3 and the right die 2 are in a closed state; when the left mold 3 and the right mold 2 need to be opened again, the cam guide rails (not shown) need to enable the driving rollers 26 to drive the mold locking pins 25 and the mold locking shafts 22 to move downwards, and meanwhile, the opening and closing of the left mold 3 and the right mold 2 are completed by driving the opening and closing mold cam guide rails (also not shown).
The existing rotary bottle blowing machine mainly has the following defects: 1. the impact mass produces noise when striking the knock pin, the more pronounced the higher the machine is; 2. because the driving rollers are controlled to move by the cam guide rails, when a plurality of dies rotate, the driving rollers are required to be on the same horizontal plane, and the adjustment difficulty is high.
Disclosure of Invention
In order to solve the technical problems, the first object of the present invention is to provide a bottle blowing machine with low noise, convenient adjustment and long service life, and the second object is to provide a locking method of left and right molds of the bottle blowing machine.
In order to achieve the first object, the present invention adopts the following technical scheme:
the bottle blowing machine comprises a die frame support, a right die, a left die, a die opening and closing control mechanism, a bottom die lifting control mechanism and a left die locking mechanism, wherein the right die and the left die are hinged to the upper part of the die frame support through the same shaft, the die opening and closing control mechanism drives the opening and closing of the right die and the left die, and the bottom die lifting control mechanism drives the lifting of the bottom die; the left die is provided with at least one left connecting boss, the left connecting boss is provided with a pin hole, the right die is provided with a right connecting boss matched with the left connecting boss, the left die locking mechanism and the right die locking mechanism comprise a die locking shaft, a die locking pin, a hinge shaft, a lever, an elastic support piece and a driving pendulum shaft, the die locking shaft penetrates through the right connecting boss, the die locking pin is linked with the die locking shaft through a connecting rod, the die locking pin can be telescopically arranged in the right connecting boss, a spring for adjusting the position of the driving pendulum shaft is further arranged between the upper end of the die locking shaft and the right connecting boss, the hinge shaft is arranged on the right die and rotates along the circumferential direction, the hinge shaft is provided with a round hole, the lever penetrates through a through hole of the hinge shaft, the lever can slide in the round hole, the middle part of the driving pendulum shaft is hinged to the lower part of the right die, one end of the driving pendulum shaft drives the die locking shaft to move up and down through a driving block, one end of the driving pendulum shaft is provided with a driving roller, the other end of the driving pendulum shaft is hinged to one end of the lever, one end of the driving pendulum shaft is hinged with one end of the elastic support piece, and the other end of the driving pendulum shaft is hinged with the elastic support piece; when the left die and the right die are opened, the elastic supporting piece is positioned at the outer side of the driving pendulum shaft, the elastic force of the elastic supporting piece enables the driving pendulum shaft to be locked in a bottom low state, the driving block drives the die locking shaft and the die locking pin to be in a bottom state, and the upper part of the die locking shaft compresses the spring; when the left die and the right die are closed, the elastic supporting piece is positioned at the inner side of the driving pendulum shaft through the lever, the elastic force of the elastic supporting piece enables the driving pendulum shaft to be locked at a high position, the driving block drives the die locking shaft and drives the die locking pin to extend upwards to the right connecting boss to extend into the pin hole so as to lock the left die and the right die, and the spring at the upper part of the die locking shaft is loosened.
As a preferable scheme: the lower extreme of mode locking axle is equipped with the drive piece, is equipped with rectangular shape recess on the drive piece, the lower extreme of drive pendulum shaft runs through and is fixed with the axle, the inner of axle is spacing in rectangular shape recess and can be in rectangular shape recess internal motion, the outer end at the axle is established to the drive roller.
As a preferable scheme: the lower extreme of mode locking axle is equipped with the drive piece, is equipped with rectangular shape through-hole on the drive piece, the lower extreme of drive pendulum shaft runs through and is fixed with the round pin, the inner of round pin runs through rectangular shape through-hole and can be at rectangular shape through-hole internal motion, the outer end at the round pin is established to the driving roller.
As a preferable scheme: the elastic support piece, the lever and the driving pendulum shaft enclose a triangle, and the elastic support piece adopts a telescopic rod with a spring sleeved outside.
As a preferable scheme: the driving pendulum shaft is L-shaped, and the corner of the driving pendulum shaft and the lower end of the elastic support piece are connected to the right die through the same hinge shaft.
As a preferable scheme: the mode locking pin and the mode locking shaft are mutually parallel.
As a preferable scheme: when the left connecting bosses are arranged in a plurality, the spacing distance between two adjacent left connecting bosses is larger than or equal to the length of the mode locking pin.
As a preferable scheme: the top of mode locking axle is equipped with protruding edge, one section of spring offsets with protruding edge, and the other end of spring offsets with right connection boss.
In order to achieve the second object, the present invention adopts the following technical scheme:
the locking method of the left and right dies of the bottle blowing machine comprises the bottle blowing machine, and comprises the following specific steps,
when the left die and the right die are close to each other, the cam guide rail lifts the driving pendulum shaft through the driving roller, the lever rotates clockwise and slides in the hinge shaft to force the elastic supporting piece to close to the driving pendulum shaft, the left die and the right die are closed when or before the elastic supporting piece is overlapped with the driving pendulum shaft, when the elastic supporting piece rotates past the overlapping point of the elastic supporting piece and the driving pendulum shaft, the force of the elastic supporting piece drives the elastic supporting piece to be far away from the driving pendulum shaft again, the elastic supporting piece completes the process of switching from the outer side to the inner side of the driving pendulum shaft, the driving pendulum shaft is locked at a high position by the elastic supporting piece, and the driving block drives the die locking shaft and drives the die locking pin to extend upwards out of the right connecting boss to extend into the pin hole to lock the left die and the right die;
when the left die and the right die are ready to be opened, the cam guide rail descends the driving pendulum shaft through the driving roller, the lever rotates anticlockwise and slides in the hinge shaft to force the elastic supporting piece to be close to the driving pendulum shaft, when the elastic supporting piece rotates to the coincident point of the elastic supporting piece and the driving pendulum shaft, the force of the elastic supporting piece drives the elastic supporting piece to be far away from the driving pendulum shaft again, the elastic supporting piece finishes the process of switching from the inner side of the driving pendulum shaft to the outer side, the driving pendulum shaft is locked in a low bottom state by the elastic supporting piece, the driving block drives the die locking shaft and the die locking pin to be in a bottom state, and at the moment, the left die and the right die can be slowly opened.
The left and right mold locking mechanism adopts the technical scheme that the elastic support piece, the lever and the driving pendulum shaft enclose a triangle, and the direction of force is changed to lock different states of the mold locking shaft through the change of the angle of the elastic support piece, so the structure has the following advantages:
(1) The position of the elastic supporting piece is easy to adjust left and right, so that the initial position of the driving roller is easy to adapt to a cam guide rail (not shown in the figure); the noise is reduced, and the low-level state of the existing structure can be adjusted only by using the gasket; (2) The loading force of the spring at the upper end of the mode locking shaft is reduced, and the service life of the mode locking shaft is prolonged; (3) The ejector rod in the prior art is eliminated, and the noise of mutual collision between the ejector rod and the collision block is eliminated.
Drawings
Fig. 1 and 2 are schematic perspective views of a mold opening/closing control mechanism and a bottom mold lifting control mechanism of a conventional bottle blowing machine.
Fig. 3 is a schematic perspective view of one side of the mold opening and closing control mechanism, the bottom mold lifting control mechanism and the adjusting lever according to the present invention.
Fig. 4 is a schematic perspective view of the other side of the mold opening and closing control mechanism, the bottom mold lifting control mechanism and the adjusting lever according to the present invention.
Fig. 5 is a schematic plan view of one side of the mold opening/closing control mechanism, the bottom mold lifting control mechanism and the adjusting lever according to the present invention.
Fig. 6 is a schematic plan view of the other side of the mold opening and closing control mechanism, the bottom mold lifting control mechanism and the adjusting lever according to the present invention.
Fig. 7 is a schematic structural view of a mold opening/closing lock mechanism in a state where left and right molds of a conventional bottle blowing machine are opened.
Fig. 8 is a schematic structural view of a mold opening/closing lock mechanism in a state where left and right molds of a conventional bottle blowing machine are closed.
Fig. 9 is a schematic structural view of the mold opening/closing lock mechanism in the left and right mold open state of the present invention.
Fig. 10 is a schematic structural view of the mold opening/closing lock mechanism in the left and right mold closed state of the present invention.
Description of the embodiments
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The bottle blowing machine as shown in fig. 3 to 6 comprises a die frame support 1, a right die 2, a left die 3, a die opening and closing control mechanism, a bottom die lifting control mechanism and a left die locking mechanism, wherein the right die 2 and the left die 3 are hinged to the upper part of the die frame support 1 through the same shaft, the die opening and closing control mechanism comprises a swing arm 8, a swing rod 10, a die opening and closing roller 7 and a die opening and closing cam guide rail 17, connecting rods 9 are respectively hinged to the outer side walls of the right die 2 and the left die 3, the other ends of the connecting rods 9 are hinged to the swing rod 10, the swing rod 10 is fixed with the swing arm 8 through a swing shaft 11 which is longitudinally arranged, the die opening and closing roller 7 is arranged at the lower end of the swing arm 8, and the die opening and closing roller 7 moves along the die opening and closing cam guide rail 17; the bottom die lifting control mechanism comprises a bottom die support 4, a small cam 14 and an adjusting rod 13, the bottom die support 4 is arranged at the lower part of the die carrier support 1 in a sliding mode, a linkage roller 15 is arranged at the upper part of the bottom die support 4, an arc-shaped guide groove 16 is formed in the inner side of the small cam 14, the corner of the small cam 14 is hinged to the lower part of the die carrier support 1, the distances from the hinging point of the small cam 14 and the die carrier support 1 to two end points of the arc-shaped guide groove 16 are different, the difference in the distances is the lifting height of the bottom die support, the linkage roller 15 is arranged in the arc-shaped guide groove 16 to move, one end of the adjusting rod 13 is connected with the swing arm 8 through a spherical hinge 12, and the other end of the adjusting rod 13 is hinged to the other side wall of the small cam 14.
When the die opening and closing roller 7 moves on the die opening and closing cam guide rail 17, the positions of the swing arm 8 and the bottom die support 4 are changed, on one hand, the swing arm 8 enables the position of the swing rod 10 to be changed through the swing shaft 11, so that the connecting rod 9 is further driven to push or pull the left die and the right die, the opening and closing of the left die and the right die are completed, on the other hand, the position change of the swing arm 8 is transmitted to the small cam 14 through the adjusting rod, the small cam 14 is enabled to rotate, the linkage roller 15 on the bottom die support 4 moves in the arc-shaped guide groove 16, and the bottom die support slides up and down on the die carrier.
According to the invention, the die opening and closing control mechanism and the bottom die lifting control mechanism are arranged in a linkage way, the swing arm drives the swing rod and the connecting rod to enable the die opening and closing to act, and meanwhile, the swing arm also drives the adjusting rod and the cam to enable the bottom die to act downwards, so that the die opening and closing and the bottom die are linked. Such a structure has the following advantages: the small cam curve is closed, and the running noise is lower; (2) The bottom die of each die cavity system is independently adjustable, thereby being beneficial to production maintenance.
The middle part of the small cam 14 is also provided with a triangular through hole, the adjusting rod 13 is hinged on one side of the small cam 14 far away from the die carrier support 1, and the hinging point of the adjusting rod 13 and the small cam 14 is positioned below the triangular through hole.
The swing arm 8 is fan-shaped, the die opening and closing roller 7 is arranged at the lower end of the corner of the swing arm 8, and a triangular fixing block used for hinging the adjusting rod 13 is fixed at the upper end of the corner of the swing arm 8. The connecting line of the hinging points of the linkage roller 15 and the small cam 14 on the die carrier support 1 is a plumb line.
The die carrier support 1 is provided with a ball guide rail, the bottom die support 4 is provided with a ball slide block, and the die carrier support 1 and the bottom die support 4 are in sliding connection up and down through the cooperation of the ball guide rail and the ball slide block.
As shown in fig. 9 and 10, the left mold 3 is provided with at least one left connecting boss 36, the left connecting boss 36 is provided with a pin hole 35, the right mold 2 is provided with a right connecting boss 37 matched with the left connecting boss 36, the left and right mold locking mechanism comprises a mold locking shaft 22 penetrating through the right connecting boss 37, the mold locking pin 25 is in linkage with the mold locking shaft 22 through a connecting rod 24, a lever 32 arranged on the right mold 2 is rotated through a hinge shaft 33, an elastic supporting piece 31 and a driving pendulum shaft 30, the lever 32 is movably arranged on the hinge shaft 33 in a penetrating manner, the mold locking pin 25 can be telescopically arranged in the right connecting boss 37, a spring 21 is further arranged between the upper end of the mold locking shaft 22 and the right connecting boss 37, the driving pendulum shaft 30 is hinged to the lower part of the right mold 2, one end of the driving pendulum shaft 30 drives the mold locking shaft 22 to move up and down, one end of the driving pendulum shaft 30 is provided with a driving roller 26, the other end of the driving pendulum shaft 30 is hinged to one end of the lever 32, one end of the other end of the elastic supporting piece 31 is hinged to the other end of the lever 32, and the other end of the elastic supporting piece 31 is hinged to the elastic supporting piece 31.
When the left mould and the right mould are slowly close, the driving pendulum shaft is gradually lifted by the cam guide rail through the driving roller, the lever rotates and slides in the hinge shaft to force the elastic supporting piece to close towards the driving pendulum shaft, the left mould and the right mould are closed when or before the elastic supporting piece is overlapped with the driving pendulum shaft, when the elastic supporting piece rotates through the overlapping point of the elastic supporting piece and the driving pendulum shaft, the force of the elastic supporting piece drives the elastic supporting piece to be far away from the driving pendulum shaft again, the elastic supporting piece completes the process of switching from the outer side of the driving pendulum shaft 30 to the inner side, the elastic supporting piece 31 enables the driving pendulum shaft 30 to be locked at a high position, and the driving block 38 drives the mould locking shaft 22 and drives the mould locking pin 25 to extend upwards to the right connecting boss 37 to extend into the pin hole 35 so as to lock the left mould 3 and the right mould 2.
When the left die and the right die are ready to be opened, the cam guide rail gradually descends the driving pendulum shaft through the driving roller, meanwhile, the lever rotates and slides in the hinge shaft to force the elastic supporting piece to be close to the driving pendulum shaft, when the elastic supporting piece rotates to pass through the coincidence point of the elastic supporting piece and the driving pendulum shaft, the force of the elastic supporting piece drives the elastic supporting piece to be far away from the driving pendulum shaft again, the elastic supporting piece finishes the process of switching from the inner side of the driving pendulum shaft 30 to the outer side, the driving pendulum shaft 30 is locked in a low bottom state by the elastic supporting piece 31, the driving block 38 drives the die locking shaft 22 and the die locking pin 25 to be in a bottom state, and at the moment, the left die and the right die can be slowly opened.
The lower extreme of mode locking axle 22 is equipped with drive block 38, mode locking axle 22 runs through drive block 38, and the end of mode locking axle 22 is equipped with the screw thread to spacing mode locking axle 22 through assorted nut, adjusting nut just can make the spring of mode locking axle 22 upper end further compress or loosen simultaneously, and then realizes the regulation of drive roller's initial position. The driving block 38 is provided with a strip-shaped groove, the lower end of the driving pendulum shaft 30 is fixedly penetrated by a shaft, the inner end of the shaft is limited in the strip-shaped groove and can move in the strip-shaped groove, and the driving roller 26 is arranged at the outer end of the shaft. The shaft may also be replaced by a pin and the recess may be replaced by a through hole.
The elastic support piece 31, the lever 32 and the driving pendulum shaft 30 enclose a triangle, and the elastic support piece 31 adopts a telescopic rod with a compression spring sleeved outside.
The driving pendulum shaft 30 is L-shaped, and the corner of the driving pendulum shaft 30 and the lower end of the elastic support member 31 are connected to the right mold 2 through the same hinge shaft. The mold locking pin 25 and the mold locking shaft 22 are disposed parallel to each other.
When a plurality of left connecting bosses 36 are provided, the spacing distance between two adjacent left connecting bosses 36 is greater than or equal to the length of the mode locking pin 25. The top end of the clamping shaft 22 is provided with a convex edge, one section of the spring is propped against the convex edge, and the other end of the spring is propped against the right connecting boss 37.
It should be noted that the above embodiments are merely representative examples of the present invention. Many variations of the invention are possible. Any simple modification, equivalent variation and modification of the above embodiments according to the principles of the present invention should be considered to fall within the scope of the present invention.

Claims (7)

1. A bottle blowing machine, characterized in that: the mold comprises a mold frame support (1), a right mold (2), a left mold (3), an opening and closing mold control mechanism, a bottom mold lifting control mechanism and a left mold locking mechanism, wherein the right mold (2) and the left mold (3) are hinged to the upper part of the mold frame support (1) through the same shaft, the opening and closing mold control mechanism drives the opening and closing of the right mold (2) and the left mold (3), and the bottom mold lifting control mechanism drives the lifting of the bottom mold; the left die (3) is provided with at least one left connecting boss (36), a pin hole (35) is arranged on the left connecting boss (36), the right die (2) is provided with a right connecting boss (37) matched with the left connecting boss (36), the left and right die locking mechanism comprises a die locking shaft (22), a die locking pin (25), a hinge shaft (33), a lever (32), an elastic support piece (31) and a driving swing shaft (30), the die locking shaft (22) penetrates through the right connecting boss (37), the die locking pin (25) is linked with the die locking shaft (22) through a connecting rod (24), the die locking pin (25) can be telescopically arranged in the right connecting boss (37), a spring (21) used for adjusting the position of the driving swing shaft (30) is further arranged between the upper end of the die locking shaft (22) and the right connecting boss (37), the hinge shaft (33) is arranged on the right die (2) and rotates along the circumferential direction, the hinge shaft (33) is provided with a connecting rod (24), the lever (32) penetrates through the lever (32) and can drive the middle part (30) to move in the round hole (30) through the driving swing shaft (32) in the middle part (30), a driving roller (26) is arranged outside one end of the driving swing shaft (30), the other end of the driving swing shaft (30) is hinged with one end of a lever (32), one end of an elastic support piece (31) is hinged with the other end of the lever (32), and the other end of the elastic support piece (31) is hinged with the right die (2); when the left die and the right die are opened, the elastic supporting piece (31) is positioned at the outer side of the driving pendulum shaft (30), the elastic force of the elastic supporting piece (31) enables the driving pendulum shaft (30) to be locked in a bottom low state, the driving block (38) drives the die locking shaft (22) and the die locking pin (25) to be in a bottom state, and the upper part of the die locking shaft (22) compresses the spring (21); when the left die and the right die are closed, the elastic supporting piece (31) is positioned at the inner side of the driving pendulum shaft (30) through the lever (32), the elastic force of the elastic supporting piece (31) enables the driving pendulum shaft (30) to be locked at a high position, the driving block (38) drives the die locking shaft (22) and drives the die locking pin (25) to extend upwards to extend out of the right connecting boss (37) to extend into the pin hole (35) so as to lock the left die (3) and the right die (2), and the spring (21) at the upper part of the die locking shaft (22) is loosened;
the mold locking pin (25) and the mold locking shaft (22) are arranged in parallel;
when the left connecting bosses (36) are provided with a plurality of left connecting bosses, the interval distance between two adjacent left connecting bosses (36) is larger than or equal to the length of the mode locking pin (25).
2. A bottle blowing machine as defined in claim 1, wherein: the lower extreme of mode locking axle (22) is equipped with driving piece (38), is equipped with rectangular shape recess on driving piece (38), the lower extreme of drive pendulum axle (30) runs through and is fixed with the axle, the inner of axle is spacing in rectangular shape recess and can be at rectangular shape recess internal motion, driving roller (26) are established at the outer end of axle.
3. A bottle blowing machine as defined in claim 1, wherein: the lower extreme of mode locking axle (22) is equipped with drive block (38), is equipped with rectangular shape through-hole on drive block (38), the lower extreme of drive pendulum axle (30) runs through and is fixed with the round pin, the inner of round pin runs through rectangular shape through-hole and can be at rectangular shape through-hole internal motion, drive roller (26) are established at the outer end of round pin.
4. A bottle blowing machine as defined in claim 1, wherein: the elastic support piece (31), the lever (32) and the driving pendulum shaft (30) enclose a triangle, and the elastic support piece (31) adopts a telescopic rod with a spring sleeved outside.
5. A bottle blowing machine as defined in claim 1, wherein: the driving pendulum shaft (30) is L-shaped, and the corner of the driving pendulum shaft (30) and the lower end of the elastic support piece (31) are connected to the right die (2) through the same hinge shaft.
6. A bottle blowing machine as defined in claim 1, wherein: the top end of the mode locking shaft (22) is provided with a convex edge, one section of the spring is propped against the convex edge, and the other end of the spring is propped against the right connecting boss (37).
7. A locking method for left and right dies of a bottle blowing machine is characterized in that: comprising a bottle blowing machine as claimed in any one of the foregoing claims 1 to 6, comprising the steps of,
when the left die (3) and the right die (2) are close, the driving swing shaft (30) is lifted by the cam guide rail through the driving roller (26), meanwhile, the lever (32) rotates clockwise and slides in the hinge shaft (33) to force the elastic supporting piece (31) to be close to the driving swing shaft, the left die (3) and the right die (2) complete closing when or before the elastic supporting piece (31) is overlapped with the driving swing shaft (30), when the elastic supporting piece (31) rotates past the overlapping point of the elastic supporting piece (31) and the driving swing shaft (30), the force of the elastic supporting piece (31) drives the elastic supporting piece (31) to be far away from the driving swing shaft (30) again, the elastic supporting piece (31) completes the process of switching from the outer side of the driving swing shaft (30) to the inner side, the elastic supporting piece (31) enables the driving swing shaft (30) to be locked at a high position, and the driving block (38) drives the die locking shaft (22) and drives the die locking pin (25) to extend upwards into the pin hole (35) to extend into the right connecting boss (37) to lock the left die (3);
when the left die (3) and the right die (2) are ready to be opened, the cam guide rail descends the driving pendulum shaft (30) through the driving roller (26), meanwhile the lever (32) rotates anticlockwise and slides in the hinge shaft (33) to force the elastic supporting piece (31) to be close to the driving pendulum shaft, when the elastic supporting piece (31) rotates past the coincident point of the elastic supporting piece (31) and the driving pendulum shaft (30), the force of the elastic supporting piece (31) drives the elastic supporting piece (31) to be far away from the driving pendulum shaft (30) again, the elastic supporting piece finishes the process of switching from the inner side of the driving pendulum shaft (30) to the outer side, the driving pendulum shaft (30) is locked in a low bottom state by the elastic supporting piece (31), and the driving block (38) drives the die locking shaft (22) and the die locking pin (25) to be in a bottom state, so that the left die and the right die can be slowly opened.
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