CN214645797U - Be applied to fork form bottom bar structure on biaxial stretching cavity blow molding mould - Google Patents
Be applied to fork form bottom bar structure on biaxial stretching cavity blow molding mould Download PDFInfo
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- CN214645797U CN214645797U CN202120545284.8U CN202120545284U CN214645797U CN 214645797 U CN214645797 U CN 214645797U CN 202120545284 U CN202120545284 U CN 202120545284U CN 214645797 U CN214645797 U CN 214645797U
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Abstract
Be applied to forked form sill bar structure on biaxial stretching cavity blow molding mould, including enclosing into preceding mould and the back mould of die cavity, be equipped with bearing mechanism in the die cavity, bearing mechanism includes central sill bar, the first actuating mechanism that the drive center sill bar stretched into the die cavity middle part, bearing mechanism still includes a plurality of slope sill bars that distribute along central sill bar periphery, is used for driving the slope sill bar slope to enter into the second actuating mechanism at die cavity middle part, slope sill bar upper end is along the direction tilt up setting near central sill bar, and every slope sill bar is connected with a second actuating mechanism. The utility model provides a fork form sill bar structure holds in the palm bottle base bottom center through central sill bar earlier, and then the claw lamella that the slope sill bar of rethread held in the palm the bottle base forms the position, makes the bottle base can obtain abundant tensile, can distribute in the bottle bottom more evenly, can obtain better cooling design, satisfies the carbonic acid bottle processing requirement that has a plurality of claw lamellas to guarantee the quality of bottle blowing.
Description
Technical Field
The utility model relates to a fashioned technical field of blow molding container, concretely relates to be applied to fork form sill bar structure on biaxial stretching cavity blow molding mould.
Background
In the existing blow molding container forming process, particularly in the blow molding method of an injection-stretch-blow two-step method, the axial stretching of a bottle blank is basically realized by contacting the inner bottom of the bottle blank with a stretching rod (round steel rod) to stretch the bottle blank to the bottom of a mold cavity at one time. And injecting compressed air in the stretching process of the stretching rod, blowing the bottle blank by means of the compressed air to enable the bottle blank to be tightly attached to the cavity wall of the mold, and cooling and shaping to obtain the hollow plastic product. When the bottle blank is stretched to be in contact with metal at the bottom of the mold cavity, the bottom of the bottle blank is cooled relatively quickly, and the material with limited stretching space is difficult to fully stretch, so that material accumulation is formed at the bottom of the container, material waste is caused, stress concentration is generated, the bottom of the container is easy to crack, and the bottle blank is particularly serious on a large-capacity container (more than 5L). In addition, when the vertical stretching dimension of the bottle preform is large, the stretching rod is prone to have unstable rate, insufficient rigidity and eccentricity at the bottom of the bottle preform, so that the wall thickness of the blow-molded container is not uniform, and the overall strength of the container is affected.
Therefore, the company invents an axial bidirectional positioning stretching hollow blow molding method, and the specific technical scheme can refer to the Chinese patent with the patent application number of 201811527312.2, and the technical scheme basically solves the technical problems. However, in the using process, it is found that, because a plurality of claw flaps recessed upwards are generally distributed on the bottom of a carbonic acid bottle (such as a cola bottle) along the periphery of the center of the bottom of the carbonic acid bottle, and only one bottom rod (a supporting rod) of the supporting device of the existing biaxial stretching hollow blow molding mold supports the center of the bottom of a bottle blank, the supporting device cannot support the claw flap forming position of the bottle blank, so that the problem that the bottle blank, namely the claw flap forming position of the bottle blank cannot be stretched sufficiently exists, the existing biaxial stretching hollow blow molding mold cannot meet the processing requirements of the carbonic acid bottle, and therefore, the supporting device of the existing biaxial stretching hollow blow molding mold needs to be improved.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a be applied to the forked form sill bar structure on the biaxial stretching cavity blow molding mould.
The utility model provides a technical scheme that its technical problem adopted is:
be applied to fork form sill bar structure on biaxial stretching cavity blow molding mould, including the preceding mould and the back mould that surround into the die cavity, be located the die cavity bottom, be used for installing the die block board of die cavity and stretch into the tensile pole of die cavity from the die cavity top, be equipped with bearing mechanism in the die cavity, bearing mechanism includes that central sill bar, drive center sill bar stretch into the first actuating mechanism at die cavity middle part, central sill bar and tensile pole are on same axis, its characterized in that: the supporting mechanism further comprises a plurality of inclined bottom rods distributed along the periphery of the central bottom rod, and a second driving mechanism used for driving the inclined bottom rods to obliquely enter the middle part of the mold cavity, wherein the upper ends of the inclined bottom rods are obliquely arranged upwards along the direction close to the central bottom rod, and each inclined bottom rod is connected with a second driving mechanism.
In the utility model, the bottom die is provided with a vertical through hole which is vertically arranged and a plurality of inclined through holes which are distributed along the periphery of the vertical through hole, and the central bottom rod penetrates into the die cavity from the inside of the through hole; the upper end of each inclined through hole is arranged in an upward inclined mode along the direction close to the vertical through hole, each inclined bottom rod correspondingly penetrates into one inclined through hole, each inclined bottom rod penetrates into the die cavity from the corresponding inclined through hole, and the first driving mechanism and the second driving mechanism are installed on the outer side of the bottom die.
The utility model discloses in, the top of center sill bar is for being used for covering vertical through-hole and the central bearing head at bearing bottle base bottom center.
The utility model discloses in, the top of slope sill bar is for being used for sealing the slope bearing head of slope through-hole top and bearing bottle base bottom.
The utility model discloses in, first actuating mechanism and second actuating mechanism are pneumatic cylinder, electric putter or motor.
The utility model discloses in, first actuating mechanism is connected with the die block through many connecting rods.
The utility model has the advantages that: the utility model provides a fork form sill bar structure holds in the palm bottle base bottom center through central sill bar earlier, and then the claw lamella that the slope sill bar of rethread held in the palm the bottle base forms the position, makes the bottle base can obtain abundant tensile, can distribute in the bottle bottom more evenly, can obtain better cooling design, satisfies the carbonic acid bottle processing requirement that has a plurality of claw lamellas to guarantee the quality of bottle blowing.
Drawings
The invention will be further explained with reference to the drawings and the embodiments below:
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic view of the upper end of the retainer extending into the mold cavity;
fig. 3 is a schematic diagram of the distribution structure of the inclined bottom rods.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.
Referring to fig. 1-3, be applied to fork form sill bar structure on biaxial stretching cavity blow molding mould, including enclosing into preceding mould 1 and the back mould of die cavity, be located die cavity bottom die 2, be used for installing die cavity 2's die block board 3 and stretch into the tensile pole 4 of die cavity from the die cavity top, be equipped with bearing mechanism in the die cavity, bearing mechanism includes central sill bar 5, the first actuating mechanism 6 that actuating center sill bar 5 stretched into the die cavity middle part, central sill bar 5 and tensile pole 4 are on same axis. Further, the supporting mechanism further comprises a plurality of inclined bottom rods 7 distributed along the periphery of the central bottom rod 5 and a second driving mechanism 8 used for driving the inclined bottom rods 7 to obliquely enter the middle part of the mold cavity, the upper ends of the inclined bottom rods 7 are obliquely arranged upwards along the direction close to the central bottom rod 5, and each inclined bottom rod 7 is connected with one second driving mechanism 8. When the device is used, the first driving mechanism 6 drives the central bottom rod 5 to extend into the middle of the mold cavity to support the center of the bottom of a bottle blank, and meanwhile, the inclined bottom rod 7 is driven by the second driving mechanism 8 to obliquely enter the mold cavity to form a fork-shaped supporting structure so as to support all claw-shaped valve forming positions of the bottle blank; when the stretching rod 4 and the central bottom rod 5 descend and stretch, the inclined bottom rod 7 retreats from the die cavity along with the descending of the central bottom rod 5 so as to form a change process that the fork-shaped supporting structure slowly opens along with the expansion of the bottom of the bottle blank, and the inclined bottom rod 7 is prevented from influencing the orderly proceeding of the bottle blowing action.
In a preferred embodiment, a plurality of claw rib bars 21 for forming claw petals are uniformly distributed on the bottom die 2, the plurality of claw rib bars 21 are converged in the middle of the bottom die 2 to form a raised boss shape, a vertical through hole penetrating through the bottom die 2 is arranged in the middle of the boss, and the central bottom rod 5 penetrates into the die cavity from the through hole. Further, be equipped with a plurality of slope through-holes that distribute along vertical through-hole periphery on the claw lamella rib 21, slope through-hole upper end sets up along the direction tilt up that is close to vertical through-hole, and every slope sill bar 7 corresponds penetrates a slope through-hole, and slope sill bar 7 passes into the die cavity in the slope through-hole.
As a preferred embodiment, the top of the central bottom rod 5 is a central supporting head for covering the vertical through hole and supporting the center of the bottom of the bottle blank, and the central supporting head and the central bottom rod 5 are integrally formed; the top of the inclined bottom rod 7 is an inclined supporting head for sealing the top of the inclined through hole and supporting the bottom of the bottle blank; when the first driving mechanism 6 drives the bearing piece to reset, the central bearing head covers the vertical through hole, and the inclined bearing head seals the inclined through hole, so that the mold bottom of the mold cavity is in a complete state, and the quality of the bottom of the carbonic acid bottle is ensured.
In this embodiment, first actuating mechanism 6 and second actuating mechanism 8 are pneumatic cylinder, electric putter or motor, and when only needing the single bearing, preferably pneumatic cylinder, the reaction is quick, with low costs, and when needs reciprocal bearing many times, preferably servo motor and drive mechanism thereof, can control reciprocal number of times and flexible amplitude through servo motor. In addition, first actuating mechanism 6 is connected with die block 2 through many connecting rods 10, and many connecting rods 10 enclose into the hollow installing support that is used for installing first actuating mechanism 6, separates first actuating mechanism 6 and die block 2 through the installing support, both made things convenient for the installation of first actuating mechanism 6, also avoided producing the influence each other, increase of service life.
Similarly, at least one mounting seat is arranged on the bottom die 2, and when the bottom die 2 has a plurality of mounting seats, each mounting seat is provided with one second driving mechanism 8, so that all the second driving mechanisms 8 are mounted. When only one mount pad on die block 2, the mount pad has following structure to set up: the middle part of mount pad is from last to the structure that link up that runs through down, the mount pad cover is established on the outside of die block 2, mount pad and die block 2 and 3 fixed connection of die block board, be equipped with a plurality of installation trench that are used for installing second actuating mechanism 8 in the periphery of mount pad, fixedly connected with is one in every installation trench second actuating mechanism 8 to accomplish second actuating mechanism 8's installation. In addition, in this embodiment, the upper edge of the bottom form 3 extends upwards to form a surrounding edge 20, and the surrounding edge 20 and the bottom form 3 are combined to form the mounting seat, so as to improve the stability of mounting connection.
The above description is only the preferred embodiment of the present invention, and the technical solutions of the objects of the present invention are all within the protection scope of the present invention as long as the objects are achieved by the substantially same means.
Claims (6)
1. Be applied to fork form sill bar structure on biaxial stretching cavity blow molding mould, including the preceding mould and the back mould that surround into the die cavity, be located the die cavity bottom, be used for installing the die block board of die cavity and stretch into the tensile pole of die cavity from the die cavity top, be equipped with bearing mechanism in the die cavity, bearing mechanism includes that central sill bar, drive center sill bar stretch into the first actuating mechanism at die cavity middle part, central sill bar and tensile pole are on same axis, its characterized in that: the supporting mechanism further comprises a plurality of inclined bottom rods distributed along the periphery of the central bottom rod, and a second driving mechanism used for driving the inclined bottom rods to obliquely enter the middle part of the mold cavity, wherein the upper ends of the inclined bottom rods are obliquely arranged upwards along the direction close to the central bottom rod, and each inclined bottom rod is connected with a second driving mechanism.
2. The forked bottom bar structure for biaxially oriented hollow blow molding dies according to claim 1, wherein: the bottom die is provided with a vertical through hole which is vertically arranged and a plurality of inclined through holes which are distributed along the periphery of the vertical through hole, and the central bottom rod penetrates into the die cavity from the inside of the through hole; the upper end of each inclined through hole is arranged in an upward inclined mode along the direction close to the vertical through hole, each inclined bottom rod correspondingly penetrates into one inclined through hole, each inclined bottom rod penetrates into the die cavity from the corresponding inclined through hole, and the first driving mechanism and the second driving mechanism are installed on the outer side of the bottom die.
3. The forked bottom bar structure applied to the biaxially oriented hollow blow molding die as claimed in claim 2, wherein: the top of the central bottom rod is provided with a central bearing head for covering the vertical through hole and bearing the center of the bottom of the bottle blank.
4. The forked bottom bar structure applied to the biaxially oriented hollow blow molding die as claimed in claim 2, wherein: the top of the inclined bottom rod is an inclined supporting head used for sealing the top of the inclined through hole and supporting the bottom of the bottle blank.
5. The forked bottom bar structure applied to the biaxially oriented hollow blow molding die as claimed in claim 4, wherein: the first driving mechanism and the second driving mechanism are pneumatic cylinders, hydraulic cylinders, electric push rods or motors.
6. The forked bottom bar structure applied to the biaxially oriented hollow blow molding die as claimed in claim 5, wherein: the first driving mechanism is connected with the bottom die through a plurality of connecting rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120545284.8U CN214645797U (en) | 2021-03-16 | 2021-03-16 | Be applied to fork form bottom bar structure on biaxial stretching cavity blow molding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120545284.8U CN214645797U (en) | 2021-03-16 | 2021-03-16 | Be applied to fork form bottom bar structure on biaxial stretching cavity blow molding mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214645797U true CN214645797U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120545284.8U Active CN214645797U (en) | 2021-03-16 | 2021-03-16 | Be applied to fork form bottom bar structure on biaxial stretching cavity blow molding mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214645797U (en) |
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2021
- 2021-03-16 CN CN202120545284.8U patent/CN214645797U/en active Active
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