CN211591268U - Lower die driving structure with auxiliary cylinder for plastic molding machine - Google Patents
Lower die driving structure with auxiliary cylinder for plastic molding machine Download PDFInfo
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- CN211591268U CN211591268U CN201922132319.0U CN201922132319U CN211591268U CN 211591268 U CN211591268 U CN 211591268U CN 201922132319 U CN201922132319 U CN 201922132319U CN 211591268 U CN211591268 U CN 211591268U
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- die
- closing
- die assembly
- lower die
- hinge
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- 238000010137 moulding (plastic) Methods 0.000 title claims description 11
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000071 blow moulding Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a lower die driving structure with an auxiliary cylinder for a plastic forming machine, which comprises a bottom plate, a lower die component, a guide shaft, a die closing hinge, a die closing driving motor and a die closing auxiliary cylinder; the bottom plate is fixedly arranged at the bottom of the guide shaft, the lower die assembly is slidably arranged on the guide shaft, the bottom plate and the lower die assembly are connected through the die assembly hinge, the die assembly hinge is driven by the die assembly driving motor, and the die assembly hinge drives the lower die assembly to slide up and down along the guide shaft to complete the die opening/closing action; the die-closing auxiliary cylinder is arranged between the bottom plate and the lower die component, so that the starting load of the die-closing driving motor is reduced, and the service life of the die-closing driving motor is effectively prolonged. The hinge mode can bear bigger forming pressure, and the swing angle of the motor-driven controllable hinge can play a role in adjusting the lifting height of the lower die assembly to a certain extent, so that the production requirements of products with different depths can be met.
Description
Technical Field
The utility model belongs to the technical field of the plastic products production, concretely relates to a lower mould drive structure who is used for plastic forming machine's area auxiliary cylinder.
Background
The existing plastic molding machine generally adopts an air cylinder to support and drive a lower die assembly, and an action rod of the air cylinder drives the lower die assembly to realize the opening/closing action, but the bearing capacity of the air cylinder is limited, so that the heavier lower die assembly is difficult to ensure the good closing sealing effect, especially for the positive-negative pressure blow molding process (an upper die is introduced with positive pressure air for blow molding, and a lower die is pumped into negative pressure for blister molding), and because the positive pressure air enters a die cavity, the contraction phenomenon of the action rod of the air cylinder is more easily caused, so that the lower die moves downwards, the air tightness of the closing is further damaged, and the molding effect of plastic products is finally influenced.
Some plastic molding machines also adopt hydraulic cylinders to support and drive the lower die assembly, and although enough bearing capacity is ensured, the hydraulic cylinders are high in cost, slow in action speed and large in occupied space.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a lower mould drive structure who is used for plastic forming machine's area auxiliary cylinder. The mould opening/closing device adopts a driving mode of a motor, an auxiliary cylinder and a hinge to open/close the mould, ensures enough bearing capacity and action rate, and has stable operation, high precision and long service life.
The utility model discloses a realize through following technical scheme:
a lower die driving structure with an auxiliary cylinder for a plastic molding machine comprises a bottom plate, a lower die component, a guide shaft, a die closing hinge, a die closing driving motor and a die closing auxiliary cylinder;
the bottom plate is fixedly arranged at the bottom of the guide shaft, the lower die assembly is slidably arranged on the guide shaft, the bottom plate and the lower die assembly are connected through the die assembly hinge, the die assembly hinge is driven by the die assembly driving motor, and the die assembly hinge drives the lower die assembly to slide up and down along the guide shaft to complete the die opening/closing action;
the structure of the die closing hinge is as follows: the die closing hinge at least comprises a bottom support, a first driving arm, a second driving arm and a top support, wherein the bottom support is fixed on the bottom plate, the bottom end of the first driving arm is hinged to the bottom support through a rotating shaft, the top support is fixed on the lower die assembly, the top end of the second driving arm is hinged to the top support through a rotating shaft, the top end of the first driving arm is hinged to the bottom end of the second driving arm through a rotating shaft, the bottom support and the hinged rotating shaft of the first driving arm are driving shafts, and the driving shafts are connected with an output shaft of a die closing driving motor through a coupler;
and the die-closing auxiliary cylinder is arranged between the bottom plate and the lower die assembly.
In the technical scheme, the number of the guide shafts is 4, and the guide shafts are distributed in a rectangular shape.
In the technical scheme, the die closing hinge comprises two groups of bottom supports, a first driving arm, a second driving arm, a top support assembly and a cross arm, and the cross arm is connected with the two groups of assemblies to realize linkage of the two groups of assemblies.
In the technical scheme, the number of the auxiliary die-closing cylinders is two, and the two auxiliary die-closing cylinders are respectively arranged on two sides of the die-closing hinge.
In the technical scheme, the lower die assembly comprises a lower die base plate, a die box and a die, the lower die base plate is a carrier of the whole lower die assembly, four corners of the lower die base plate are respectively mounted on the guide shafts through linear bearings, the die box is fixedly mounted on the lower die base plate through bolts, the die is fixedly mounted in the die box, an air suction nozzle is arranged at the bottom of the die box, a space is reserved between the die box and the bottom surface of the die, and a plurality of air holes are formed in the bottom surface of the die so that negative pressure is transmitted to the interior of the die.
The utility model discloses an advantage and beneficial effect do:
1. the utility model discloses a lower mould drive structure adopts the drive mode of motor + hinge to open/close the mould, compares with traditional cylinder drive mode, and the hinge mode can bear bigger forming pressure, because the goods shaping process is to exert positive, negative pressure simultaneously, and such goods shaping effect is better, but just the bearing capacity requirement to the lower mould is bigger, and traditional cylinder drive mode can not be good satisfies forming pressure; the synchronism of the die assembly process and the sheet conveying process is better guaranteed by adopting the motor for driving; meanwhile, the motor drives the swing angle of the controllable hinge, so that the effect of adjusting the lifting height of the lower die assembly can be achieved to a certain extent, and the production requirements of products with different depths can be met.
2. In addition, because the lower die assembly is heavy in weight, the requirement on the starting force torque of the die assembly driving motor is large, and in order to prolong the service life of the die assembly driving motor, a die assembly auxiliary cylinder is arranged between the bottom plate of the forming cutting mechanism and the lower die assembly so as to reduce the starting load of the die assembly driving motor and effectively prolong the service life of the die assembly driving motor.
Drawings
Fig. 1 is a schematic perspective view of a lower mold driving structure of the present invention.
Fig. 2 is a sectional view (mold open state) of the lower mold drive structure of the present invention.
Fig. 3 is a cross-sectional view (mold clamping state) of the lower mold drive structure of the present invention.
Wherein:
for a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Referring to fig. 1, a lower mold driving structure with an auxiliary cylinder for a plastic molding machine includes a base plate 1, a lower mold assembly 2, a guide shaft 3, a mold closing hinge 4, a mold closing driving motor 5, and an auxiliary mold closing cylinder 6.
The number of the guide shafts 3 is 4, the guide shafts are distributed in a rectangular shape, the bottom plate 1 is fixedly installed at the bottom of the guide shafts 3, the lower die assembly 2 is installed on the guide shafts 3 in a sliding mode, the bottom plate 1 and the lower die assembly 2 are connected through the die assembly hinge 4, the die assembly hinge 4 is driven by the die assembly driving motor 5, and then the die assembly hinge 4 drives the lower die assembly 2 to slide up and down along the guide shafts 3 to complete die opening/closing actions.
Referring to fig. 2 and 3, specifically, the mold clamping hinge 4 has a structure that: the die assembly hinge 4 at least comprises a bottom support 4-1, a first driving arm 4-2, a second driving arm 4-3 and a top support 4-4, the bottom support 4-1 is fixed on the bottom plate 1, the bottom end of the first driving arm 4-2 is hinged with the bottom support 4-1 through a rotating shaft, the top support 4-4 is fixed on the lower die assembly 2, the top end of the second driving arm 4-3 is hinged with the top support 4-4 through a rotating shaft, the top end of the first driving arm 4-2 is hinged with the bottom end of the second driving arm 4-3 through a rotating shaft, the hinged rotating shafts of the bottom support 4-1 and the first driving arm 4-2 are driving shafts 4-5, the driving shafts 4-5 are connected with output shafts of the die assembly driving motor 5 through couplings, when the die assembly driving motor 5 acts, the first driving arm 4-2 can drive the second driving arm 4-3 to move, and further drive the lower die assembly 2 to vertically move up and down along the guide shaft (the lower die assembly 2 is controlled to move up or down by controlling the positive and negative rotation of the die assembly driving motor 5), and after die assembly, the first driving arm 4-2 and the second driving arm 4-3 are in a vertical state to form stable support for the lower die assembly.
Further, the mold closing hinge 4 preferably comprises two groups of assemblies, namely a bottom support 4-1, a first driving arm 4-2, a second driving arm 4-3 and a top support 4-4, and further comprises a cross arm 4-6, wherein the two groups of assemblies are connected through the cross arm 4-6 (namely, one end of the cross arm 4-6 is hinged with the top end of the first driving arm of the first group and the bottom end of the second driving arm through a rotating shaft, and the other end of the cross arm is hinged with the top end of the first driving arm of the second group and the bottom end of the second driving arm through a rotating shaft), so that linkage of the two groups of assemblies is realized. Therefore, the whole mold closing hinge mechanism is more stable and higher in strength.
Because lower mould subassembly 2 weight is heavier, and the start-up force torque of compound die driving motor 5 requires greatly, in order to improve compound die driving motor life, has still set up compound die auxiliary cylinder 6 between bottom plate and lower mould subassembly (namely, 6 bottom fixings on bottom plate 1 of compound die auxiliary cylinder, the action bars top of compound die auxiliary cylinder is connected with lower mould subassembly) to reduce compound die driving motor's start-up load, effectively improve compound die driving motor's life. The number of the mold clamping auxiliary cylinders 6 is preferably two, and the two cylinders are respectively arranged on both sides of the mold clamping hinge 4.
The lower die assembly 2 comprises a lower die base plate 2-1, a die box 2-2 and a die 2-3, wherein the lower die base plate 2-1 is a carrier of the whole lower die assembly, four corners of the lower die base plate 2-1 are respectively installed on guide shafts through linear bearings, the die box 2-2 is fixedly installed on the lower die base plate 2-1 through bolts, the die 2-3 is fixedly installed in the die box 2-2, a suction nozzle m is arranged at the bottom of the die box 2-2 and is used for connecting a negative pressure device, a space is formed between the bottom of the die box 2-2 and the bottom of the die 2-3, and a plurality of air vents (not shown in the figure) are formed in the bottom of the die 2-3 so that negative pressure is transmitted to the inside of the die 2-3.
During operation, the die assembly driving motor 5 and the die assembly auxiliary cylinder 6 are started simultaneously, the die assembly hinge 4 drives the lower die assembly 2 to move upwards to carry out die assembly with the upper die 7, and after die assembly, the lower die assembly is vacuumized to form negative pressure, so that the plastic plate in a softened state is deformed to be formed (fig. 3). Furthermore, positive pressure air can be introduced into the upper die, so that positive pressure and negative pressure are combined to form, and the forming quality and forming speed of the plastic product are greatly improved.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (5)
1. The utility model provides a lower mould drive structure for taking auxiliary cylinder of plastic molding machine which characterized in that: the device comprises a bottom plate, a lower die assembly, a guide shaft, a die closing hinge, a die closing driving motor and a die closing auxiliary cylinder;
the bottom plate is fixedly arranged at the bottom of the guide shaft, the lower die assembly is slidably arranged on the guide shaft, the bottom plate and the lower die assembly are connected through the die assembly hinge, the die assembly hinge is driven by the die assembly driving motor, and the die assembly hinge drives the lower die assembly to slide up and down along the guide shaft to complete the die opening/closing action;
the structure of the die closing hinge is as follows: the die closing hinge at least comprises a bottom support, a first driving arm, a second driving arm and a top support, wherein the bottom support is fixed on the bottom plate, the bottom end of the first driving arm is hinged to the bottom support through a rotating shaft, the top support is fixed on the lower die assembly, the top end of the second driving arm is hinged to the top support through a rotating shaft, the top end of the first driving arm is hinged to the bottom end of the second driving arm through a rotating shaft, the bottom support and the hinged rotating shaft of the first driving arm are driving shafts, and the driving shafts are connected with an output shaft of a die closing driving motor through a coupler;
and the die-closing auxiliary cylinder is arranged between the bottom plate and the lower die assembly.
2. The lower mold driving structure with the auxiliary cylinder for the plastic molding machine as claimed in claim 1, wherein: the number of the guide shafts is 4, and the guide shafts are distributed in a rectangular shape.
3. The lower mold driving structure with the auxiliary cylinder for the plastic molding machine as claimed in claim 1, wherein: the die assembly hinge comprises two groups of bottom supports, a first driving arm, a second driving arm, a top support assembly and a cross arm, and the cross arm is connected with the two groups of assemblies to realize linkage of the two groups of assemblies.
4. The lower mold driving structure with the auxiliary cylinder for the plastic molding machine as claimed in claim 1, wherein: the number of the auxiliary die-closing cylinders is two, and the two auxiliary die-closing cylinders are respectively arranged on two sides of the die-closing hinge.
5. The lower mold driving structure with the auxiliary cylinder for the plastic molding machine as claimed in claim 1, wherein: the lower die assembly comprises a lower die base plate, a die box and a die, the lower die base plate is a carrier of the whole lower die assembly, four corners of the lower die base plate are respectively mounted on guide shafts through linear bearings, the die box is fixedly mounted on the lower die base plate through bolts, the die is fixedly mounted in the die box, an air suction nozzle is arranged at the bottom of the die box, a space is reserved between the die box and the bottom of the die, and a plurality of air holes are formed in the bottom of the die so that negative pressure is transmitted to the interior of the die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132319.0U CN211591268U (en) | 2019-11-29 | 2019-11-29 | Lower die driving structure with auxiliary cylinder for plastic molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922132319.0U CN211591268U (en) | 2019-11-29 | 2019-11-29 | Lower die driving structure with auxiliary cylinder for plastic molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211591268U true CN211591268U (en) | 2020-09-29 |
Family
ID=72590217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922132319.0U Expired - Fee Related CN211591268U (en) | 2019-11-29 | 2019-11-29 | Lower die driving structure with auxiliary cylinder for plastic molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211591268U (en) |
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2019
- 2019-11-29 CN CN201922132319.0U patent/CN211591268U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200929 |