CN109664481B - Bottom die locking device and application method thereof - Google Patents

Abstract

The invention discloses a bottom die locking device and a use method thereof. The invention realizes automatic alignment, aligning, synchronous locking and unlocking in the bottom die locking process, eliminates the clamping stagnation phenomenon, greatly reduces the difficulty of bottom die replacement, and improves the bottom die replacement efficiency.

Description

Bottom die locking device and application method thereof

Technical Field

The invention relates to the technical field of dies, in particular to a bottom die locking device and a using method thereof.

Background

The bottle blowing machine is widely applied to the fields of beverage bottles, medicine bottles, oil bottles and the like, the blowing station is a main component part of the bottle blowing machine and mainly comprises a left die, a right die and a bottom die, and a complete bottle cavity is formed by combining the left die, the right die and the bottom die. When the left mould, the right mould and the bottom mould are opened and the bottle cavity is lowered, the bottle embryo enters the bottle cavity, then the left mould and the right mould are closed, the bottom mould is raised to close the bottle cavity, at the moment, the bottle embryo is subjected to blow molding, after the bottle embryo is subjected to blow molding, the left mould, the right mould and the bottom mould are opened again, the bottle cavity is lowered, and the molded bottle is taken away, so that the cycle is performed.

When the bottom die descends, locking and fixing are generally needed. At present, the locking of the bottom die is realized by matching the bottom die blind rivet connected with the bottom die with a bottom die locking mechanism comprising a steel ball, when the bottom die is installed and disassembled, the matching requirement of the bottom die blind rivet and the bottom die locking mechanism is high, the processing difficulty is high, the bottom die is easy to be blocked during installation, and the bottom die blind rivet is easy to break, so that the assembly technical requirement on first-line staff is higher, and the replacement efficiency of the bottom die is reduced.

Disclosure of Invention

The invention aims to provide a bottom die locking device which can realize automatic alignment, centering, synchronous locking and unlocking of a bottom die, eliminate the clamping stagnation phenomenon and greatly improve the replacement efficiency of the bottom die.

Another object of the present invention is to provide a method for using the bottom mold locking device, which is easy to operate.

To achieve the purpose, the invention adopts the following technical scheme:

in one aspect, a bottom die locking device is provided, which comprises a mounting bottom plate, a positioning column, a locking shaft, a hollow lantern ring, a cover plate and a bottom die connecting block, wherein the positioning column is fixed on the mounting bottom plate, the locking shaft is sleeved on the positioning column and can move along the axial direction of the positioning column, the hollow lantern ring is sleeved on the periphery of the locking shaft and is connected with the mounting bottom plate, the cover plate is connected with the top of the hollow lantern ring and is sleeved on the locking shaft, and the bottom die connecting block is positioned at the top of the cover plate;

a plurality of locking balls are arranged on the locking shaft, and the bottom die connecting block is provided with locking grooves matched with the locking balls;

the locking ball moves along with the locking shaft, so that the locking ball is contacted with or separated from the side surface wall of the positioning column, and the locking ball is provided with a locking position embedded into the locking groove and an unlocking position separated from the locking groove, and locking or unlocking of the locking shaft and the bottom die connecting block is realized.

As a preferable scheme of the invention, the locking shaft comprises a base, a body, an elastic piece and a plurality of locking balls; the base and the body are hollow cylinders, and the body is convexly arranged on the base and the axes of the base and the body are coincident; the elastic piece is clamped between the cover plate and the base; a plurality of through holes are formed in the pipe wall of the body, and the locking balls are located in the through holes.

As a preferable mode of the present invention, the number of the locking balls is at least two.

As a preferable scheme of the invention, the diameter of the locking ball is larger than the thickness of the pipe wall of the body, and when one side of the locking ball is abutted against the side surface wall of the positioning column, the opposite side of the locking ball can be embedded into the locking groove to lock the bottom die connecting block.

As a preferable scheme of the invention, an annular clamping groove is formed in the base, and the elastic piece is placed in the annular clamping groove.

As a preferable scheme of the invention, the top of the positioning column is in a spherical surface or a circular truncated cone structure, and when the locking ball is in an unlocking position, the locking ball is abutted with the inclined surface of the spherical surface or the circular truncated cone structure; when the locking ball is in the locking position, the locking ball is abutted with the side wall of the positioning column.

As a preferable scheme of the invention, the inside of the mounting bottom plate is provided with the ventilation pipeline, and the contact surface of the locking shaft and the hollow lantern ring, the contact surface of the locking shaft and the positioning column and the contact surface of the hollow lantern ring and the mounting bottom plate are sealed by the sealing ring, so that an airtight cavity can be formed between the base and the mounting bottom plate.

As a preferable scheme of the invention, the mounting bottom plate is internally provided with the ventilation pipeline which is communicated with the airtight cavity, so that the locking shaft can move towards the cover plate along the positioning column under the pushing of compressed gas and overcoming the elasticity of the elastic piece.

As a preferable scheme of the invention, a positioning pin shaft is convexly arranged on the cover plate, and a positioning hole matched with the positioning pin shaft is arranged at the bottom of the bottom die connecting block.

On the other hand, the application method of the bottom die locking device comprises the following steps:

when the bottom die is installed, compressed gas enters an airtight cavity through an air duct, a locking shaft is pushed by the compressed gas, the locking shaft moves towards a cover plate along a positioning column, a locking ball is separated from contact with the side wall of the positioning column and is in a movable state, a bottom die connecting block is aligned with a positioning pin shaft to be inserted at the moment, then the compressed gas stops being introduced, the locking shaft starts to move towards an installation bottom plate along the positioning column, when the locking ball is extruded by the side wall of the positioning column, the locking ball moves towards a direction away from the side wall of the positioning column, the locking ball is clamped into a locking groove, the bottom die connecting block is locked, and the bottom die is installed;

when the bottom die is disassembled, compressed gas enters the airtight cavity through the ventilation pipeline, the locking shaft is pushed by the compressed gas to move towards the cover plate along the positioning column, the locking ball is separated from the locking groove, and when the locking ball is separated from contact with the side surface wall of the positioning column and is in a movable state, the bottom die connecting block is unlocked, and the bottom die is lifted upwards at the moment, so that the disassembly of the bottom die is completed.

The invention has the beneficial effects that:

1. by arranging the movable locking shaft and the locking balls, automatic alignment and centering in the bottom die locking process are realized, and all the locking balls synchronously move and lock or unlock at the same time, so that unlocking and locking are completed at the same time, the clamping stagnation phenomenon is eliminated, the difficulty of bottom die replacement is greatly reduced, and the bottom die replacement efficiency is improved;

2. the bottom die connecting block can be quickly positioned at the correct position by arranging the positioning pin shaft, so that the pre-alignment of the locking ball and the locking groove is realized, and the follow-up operation is convenient;

3. the elastic piece is arranged to enable the locking shaft to return automatically, so that operation is simplified.

The invention solves the problems of die clamping stagnation, blind rivet breakage and the like which are easy to occur in the operation process of die replacement of the conventional die locking device, greatly reduces the operation difficulty and improves the die replacement efficiency. .

Drawings

FIG. 1 is an exploded view of a bottom mold locking device according to an embodiment of the present invention;

FIG. 2 is a top view of a bottom mold locking device according to an embodiment of the present invention;

FIG. 3 is a schematic view showing a locked state of the bottom mold locking device according to the embodiment of the present invention;

FIG. 4 is a schematic view of an unlocked state of a bottom mold locking device according to an embodiment of the present invention;

fig. 5 is a cross-sectional view taken along A-A of fig. 2.

In fig. 1-5:

1. a mounting base plate; 11. a screw; 12. a vent fitting; 13. a ventilation duct; 2. positioning columns; 3. a locking shaft; 31. a base; 32. a spring; 33. a body; 34. a locking ball; 35. a limiting ring; 4. positioning pin shafts; 5. a hollow collar; 6. a cover plate; 61. opening holes; 7. a bottom die connecting block; 71. a clasp; 711. a locking groove; 72. a connecting block upper cover; 721. positioning holes; 8. a seal ring; 9. a guide ring; 100. an airtight chamber.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 5, the bottom die locking device of the present embodiment includes an installation bottom plate 1, a positioning column 2, a locking shaft 3, a positioning pin 4, a hollow collar 5, a cover plate 6, a bottom die connecting block 7 and a sealing ring 8. The locating column 2 is fixed on the mounting baseplate 1 through a screw 11, the locking shaft 3 is sleeved on the locating column 2 and can axially move along the locating column 2, the hollow lantern ring 5 is sleeved on the periphery of the locking shaft 3 and is connected with the mounting baseplate 1 through a screw, the cover plate 6 is connected with the top of the hollow lantern ring 5 through a screw, the bottom die connecting block 7 is positioned through the locating pin shaft 4 and is placed at the top of the cover plate 6.

The locking shaft 3 includes a base 31, a spring 32, a body 33, and a locking ball 34.

In this embodiment, the base 31 and the body 33 are integrally formed, and a through hole matching with the shape of the positioning column 2 is formed inside the base, so that the locking shaft 3 can move along the axial direction of the positioning column 2. The base 31 and the body 33 are cylindrical, the outer side wall of the base 31 is matched with the inner side wall of the hollow lantern ring 5 in shape, and meanwhile, the sealing rings 8 are arranged on the contact surface of the locking shaft 3 and the hollow lantern ring 5 and the contact surface of the hollow lantern ring 5 and the mounting base plate 1, so that the mounting base plate 1, the hollow lantern ring 5, the locking shaft 3 and the positioning post 2 jointly enclose into the airtight chamber 100 with variable volume. Inside the mounting base plate 1, a ventilation pipe 13 is provided in communication with the airtight chamber 100, and compressed gas can be introduced into the airtight chamber 100 through a ventilation joint 12 to push the locking shaft 3 to move in the axial direction of the positioning column 2.

The spring 32 is sleeved on the body 33 and is clamped in an annular clamping groove formed in the base 31, and the annular clamping groove can enable the spring 32 to be completely compressed into the annular clamping groove, so that the upper surface of the base 31 can be tightly attached to the lower surface of the cover plate 6, and the spring 32 is prevented from being damaged due to abnormal deformation caused by excessive pressure in the moving process of the locking shaft 3.

Alternatively, the spring 32 may be replaced by other elastic members, and the elastic members may be disposed away from the body 33 instead of being sleeved on the outer sidewall of the body 33.

The bottom die connection block 7 includes a snap ring 71 and a connection block upper cover 72, and the snap ring 71 is fixed to the bottom center of the connection block upper cover 72 and provided with a locking groove 711 matching the locking ball 34.

The upper part of the body 33 is provided with a plurality of through holes, the diameter of the through holes is slightly larger than that of the locking balls 34, so that the locking balls 34 can transversely move in the through holes, the diameter of the outer side wall of the body 33 is smaller than that of the opening 61 of the cover plate 6, and the upper part of the body 33 and the locking balls 34 arranged in the through holes at the upper part of the body 33 are positioned on the cover plate 6. The number of locking balls 34 is at least two for the purpose of locking, and the specific number can be freely selected according to practical needs. In the present embodiment, the number of the locking balls 34 is preferably eight, and is uniformly arranged in the circumferential direction of the body 33. The diameter of the locking ball 34 is larger than the thickness of the pipe wall of the body 33, so that when one side of the locking ball 34 is abutted against the side wall of the positioning column 2, the opposite side of the locking ball can be clamped into the locking groove 711 to realize locking and fixing of the bottom die connecting block 7.

Through holes matched with the positioning pin shafts 4 are formed in the corresponding positions of the hollow lantern ring 5 and the cover plate 6 in a penetrating manner, the top of the positioning pin shafts 4 protrude out of the upper surface of the cover plate 6, and positioning holes 721 matched with the top of the positioning pin shafts 4 are formed in the connecting block upper cover 72. By providing the positioning pin 4 and the positioning hole 721, the bottom die connecting block 7 can be aligned with the center of the locking shaft 3 quickly, so that the locking groove 711 and the locking ball 34 are pre-aligned.

The top of the positioning column 2 is a spherical surface, and the symmetrical design is adopted, so that all locking balls 34 move to the locking grooves 711 synchronously, all the locking balls 34 are embedded into the locking grooves 711 at the same time, and the locking process of the bottom die connecting block 7 is smoother and quicker.

In order to facilitate a further understanding of the present invention, the working principle thereof will be described with reference to fig. 3 to 5.

When compressed gas is introduced into the airtight chamber 100 from the vent fitting 12 through the vent pipe 13 inside the mounting base plate 1, the pressure generated by the compressed gas brings the lock shaft 3 out of contact with the mounting base plate 1 and moves toward the cover plate 6, in the process, the lock ball 34 is pushed by the body 33 and is pulled out of the lock groove 711, the lock ball 34 is out of contact with the side wall of the positioning column 2 and is in contact with the top spherical surface of the positioning column 2 as the lock shaft 3 continues to move, the lock ball 34 is in a movable state, and the bottom die connecting block 7 is unlocked. When the base 31 contacts with the lower surface of the cover plate 6, the locking shaft 3 is blocked by the cover plate 6 to stop moving, and the device is in a stable state, so that the bottom die can be replaced.

When the base 31 is in contact with the lower surface of the cover plate 6, the bottom die connecting block 7 is positioned above the cover plate 6 by the positioning pin 4, and the locking balls 34 are located right above the locking grooves 711. After the compressed gas is disconnected, under the action of the elasticity and gravity of the spring 32, the locking shaft 3 is separated from contact with the cover plate 6 and moves towards the mounting base plate 1, in the process, all the locking balls 34 are extruded by the spherical surface at the top of the positioning column 2, meanwhile, the through holes formed in the body 33 move towards the side far away from the positioning column 2, along with the fact that the locking shaft 3 continues to move towards the mounting base plate 1, the locking balls 34 are transited to a state of being extruded by the outer side wall of the positioning column 2, and when the base 31 is in contact with the mounting base plate 1, the locking balls 34 are extruded into the locking grooves 711, and the bottom die connecting block 7 is locked and fixed.

Example two

As shown in fig. 3, on the basis of the first embodiment, a guide ring groove is further formed in the base 31 of the present embodiment, and a guide ring 9 is disposed in the guide ring groove. By arranging the guide ring 9, on one hand, the direct friction between the outer side wall of the base 31 and the inner side wall of the hollow lantern ring 5 can be avoided, and the service life of the device is prolonged; on the other hand, friction force can be reduced to enable the moving process of the locking shaft 3 to be smoother.

Example III

As shown in fig. 4, on the basis of any of the above embodiments, the lock shaft 3 of the present embodiment further includes a stopper ring 35 provided in the through hole of the body 33 on the side away from the positioning post 2. The limiting ring 35 is located below the locking ball 34, and when the locking ball 34 is in a movable state, the limiting ring 35 prevents the locking ball 34 from falling from the side surface by blocking the locking ball 34 from being separated from the through hole of the body 33 in a direction away from the positioning column 2.

Example IV

The application method of the bottom die locking device of any embodiment comprises the following steps:

when the bottom die is installed, compressed gas is introduced from the ventilation joint 12 and enters the airtight chamber 100 through the ventilation pipeline 13, the locking shaft 3 is pushed by the compressed gas to move towards the cover plate 6 along the positioning column 2, the locking ball 34 is separated from contact with the side surface wall of the positioning column 2 and is in a movable state, at the moment, the bottom die connecting block 7 is aligned with the positioning pin 4 to be inserted, then the compressed gas stops being introduced, the locking shaft 3 starts to move towards the installation bottom plate 1 along the positioning column 2, when the locking ball 34 is extruded by the side surface wall of the positioning column 2, the locking ball 34 moves towards a direction away from the side surface wall of the positioning column 2, the locking ball 34 is clamped into the locking groove 711, the bottom die connecting block 7 is locked, and the installation is completed.

When the bottom die is disassembled, compressed gas is introduced from the ventilation joint 12, enters the airtight chamber 100 through the ventilation pipeline 13, the locking shaft 3 is pushed by the compressed gas to move along the positioning column 2 towards the cover plate 6, the locking balls 34 are separated from the locking grooves 711, and when the locking balls 34 are separated from contact with the side surface walls of the positioning column 2 and are in a movable state, the bottom die connecting block 7 is lifted upwards, so that the disassembly of the bottom die is completed.

As a preferred embodiment of the invention, in the description herein, reference to the terms "preferred," "optional," and the like, means that a particular feature, structure, material, or characteristic described in connection with the example or illustration is included in at least one example or illustration of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only for illustrating the detailed aspects of the present invention, and the present invention is not limited to the detailed aspects, i.e., it does not mean that the present invention must be implemented depending on the detailed aspects. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.

Claims (8)

1. The bottom die locking device is characterized by comprising an installation bottom plate, a positioning column, a locking shaft, a hollow lantern ring, a cover plate and a bottom die connecting block, wherein the positioning column is fixed on the installation bottom plate, the locking shaft is sleeved on the positioning column and can move along the axial direction of the positioning column, the hollow lantern ring is sleeved on the periphery of the locking shaft and is connected with the installation bottom plate, the cover plate is connected with the top of the hollow lantern ring and is sleeved on the locking shaft, and the bottom die connecting block is positioned at the top of the cover plate;

a plurality of locking balls are arranged on the locking shaft, and the bottom die connecting block is provided with locking grooves matched with the locking balls;

the locking ball moves along with the locking shaft to enable the locking ball to be in contact with or separated from the side surface wall of the positioning column, so that the locking ball has a locking position embedded into the locking groove and an unlocking position separated from the locking groove, and locking or unlocking of the locking shaft and the bottom die connecting block is realized;

the top of the positioning column is in a spherical surface or a circular truncated cone structure, and when the locking ball is in an unlocking position, the locking ball is abutted with an inclined surface of the spherical surface or the circular truncated cone structure; when the locking ball is in a locking position, the locking ball is abutted with the side wall of the positioning column;

the cover plate is convexly provided with a positioning pin shaft, and the bottom of the bottom die connecting block is provided with a positioning hole matched with the positioning pin shaft.

2. The bottom die locking device as claimed in claim 1, wherein the locking shaft comprises a base, a body, an elastic member, and a plurality of locking balls; the base and the body are hollow cylinders, and the body is convexly arranged on the base and the axes of the base and the body are coincident; the elastic piece is clamped between the cover plate and the base; a plurality of through holes are formed in the pipe wall of the body, and the locking balls are located in the through holes.

3. The die lock apparatus of claim 2, wherein the number of lock balls is at least two.

4. The die block locking device of claim 2, wherein the locking balls have a diameter greater than the thickness of the tube wall of the body, and when one side of the locking balls abuts against the side wall of the positioning column, the opposite side of the locking balls can be inserted into the locking grooves to lock the die block.

5. The bottom die locking device as claimed in claim 2, wherein the base is provided with an annular clamping groove, and the elastic member is placed in the annular clamping groove.

6. The bottom mold locking device according to claim 2, wherein the contact surface of the locking shaft and the hollow collar, the contact surface of the locking shaft and the positioning column, and the contact surface of the hollow collar and the mounting base plate are sealed by sealing rings, so that an airtight chamber can be formed between the base and the mounting base plate.

7. The bottom mold locking device according to claim 6, wherein an air duct is provided inside the mounting base plate, and the air duct is communicated with the airtight chamber, so that the locking shaft can move toward the cover plate along the positioning column against the elastic force of the elastic member under the pushing of compressed gas.

8. The application method of the bottom die locking device is characterized by comprising the following steps of:

when the bottom die is installed, compressed gas enters an airtight cavity through an air duct, a locking shaft is pushed by the compressed gas, the locking shaft moves towards a cover plate along a positioning column, a locking ball is separated from contact with the side wall of the positioning column and is in a movable state, a bottom die connecting block is aligned with a positioning pin shaft to be inserted at the moment, then the compressed gas stops being introduced, the locking shaft starts to move towards an installation bottom plate along the positioning column, when the locking ball is extruded by the side wall of the positioning column, the locking ball moves towards a direction away from the side wall of the positioning column, the locking ball is clamped into a locking groove, the bottom die connecting block is locked, and the bottom die is installed;

when the bottom die is disassembled, compressed gas enters the airtight cavity through the ventilation pipeline, the locking shaft is pushed by the compressed gas to move towards the cover plate along the positioning column, the locking ball is separated from the locking groove, and when the locking ball is separated from contact with the side surface wall of the positioning column and is in a movable state, the bottom die connecting block is unlocked, and the bottom die is lifted upwards at the moment, so that the disassembly of the bottom die is completed.