CN221291997U - Automatic closing and pressing device of rotational molding die - Google Patents
Automatic closing and pressing device of rotational molding die Download PDFInfo
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- CN221291997U CN221291997U CN202322845823.1U CN202322845823U CN221291997U CN 221291997 U CN221291997 U CN 221291997U CN 202322845823 U CN202322845823 U CN 202322845823U CN 221291997 U CN221291997 U CN 221291997U
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- 238000003825 pressing Methods 0.000 title claims abstract description 80
- 238000001175 rotational moulding Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims abstract description 18
- 238000007906 compression Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims description 68
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract 4
- 238000005056 compaction Methods 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 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
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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Abstract
The utility model relates to an automatic opening and closing compacting device of a rotational molding die, which belongs to the technical field of rotational molding dies, wherein the rotational molding die comprises an upper die and a lower die, the upper die is provided with an upper die frame, the lower die is provided with a lower die frame, the automatic opening and closing compacting device comprises an opening and closing mechanism and a plurality of compacting mechanisms, the opening and closing mechanism comprises at least two opening and closing driving cylinders, the opening and closing driving cylinders are arranged on the lower die frame, and a piston rod of each opening and closing driving cylinder is connected with the upper die frame; the pressing mechanism comprises a pressing arm and a pressing driving cylinder used for driving the pressing arm to lock the upper die and keeping away from the upper die when the upper die is opened during die assembly, and the pressing driving cylinder is arranged on the lower die frame. The automatic plastic rolling die is simple in structure and convenient to operate, automatic opening and closing of the plastic rolling die are realized, automatic compression of the die is realized, automatic auxiliary demolding of plastic rolling products is realized, manpower and time can be greatly saved, and plastic rolling production is efficient and convenient.
Description
Technical Field
The utility model relates to an automatic opening and closing compacting device for a rotational molding die, and belongs to the technical field of rotational molding dies.
Background
The rotational molding process is one of the hollow plastic product molding processes, and is to add the measured liquid or powder plastic into the mold, rotate the mold after closing, heat the mold at the same time, make the plastic material in the mold evenly melt and adhere to the inner surface of the mold cavity under the action of gravity and heat energy, thus molding into the same shape as the mold cavity, and demolding after cooling to obtain the required hollow product.
The existing rotational molding die is opened and locked by manual operation mostly, the die with larger volume needs to be matched when larger rotational molding products are faced, the upper die of the die is usually matched with an aerial crane to realize die closing by manual operation, then the locking after the die is closed is mostly implemented by manual locking clamps, all the manual clamps are locked by manual operation mostly, after the rotational molding die is processed, all the clamps are manually detached firstly by manual operation, then the upper die is opened by manual matching of the aerial crane, the die opening and closing process is time-consuming and labor-consuming, the die opening and closing efficiency is obviously too low by one person, and if a plurality of persons are matched, although the efficiency can be improved, the manual cost is high, and the requirement of rotational molding efficiency cannot be met. In addition, the demolding of the existing rotational molding die is carried out manually, products are required to be taken out of the die manually after the die is opened, the depth of the products in the die is not beneficial to manual material taking, and the problem that time and labor are wasted is caused in demolding.
Disclosure of Invention
The utility model provides an automatic opening and closing compacting device for a rotational molding die, which aims at the defects in the prior art.
The technical scheme for solving the technical problems is as follows: the automatic opening and closing compacting device of the rotational molding die comprises an upper die and a lower die, wherein an upper die frame is arranged on the upper die, a lower die frame is arranged on the lower die, the automatic opening and closing compacting device comprises an opening and closing mechanism and a plurality of compacting mechanisms, the opening and closing mechanism comprises at least two opening and closing driving cylinders, the opening and closing driving cylinders are arranged on the lower die frame, and a piston rod of each opening and closing driving cylinder is connected with the upper die frame;
The pressing mechanism comprises a pressing arm and a pressing driving cylinder used for driving the pressing arm to lock the upper die and keeping away from the upper die when the upper die is opened during die assembly, and the pressing driving cylinder is arranged on the lower die frame.
The beneficial effects of the utility model are as follows: the automatic opening and closing of the upper die is realized through the extension and contraction of a piston rod of the opening and closing driving cylinder, when the die needs to be opened, a pressing arm of the pressing mechanism is far away from the upper die under the action of the pressing driving cylinder, the pressing state of the upper die frame is relieved, and then the piston rod of the opening and closing driving cylinder extends to drive the upper die frame to move upwards so as to jack up the upper die; when the mould needs to be closed, the piston rod of the opening and closing driving cylinder contracts and resets, the upper mould is driven to move downwards through the upper mould frame, the upper mould and the lower mould are matched with the mould to be closed, then the pressing driving cylinder of the pressing mechanism acts, and the pressing arm swings to the upper mould frame to lock the upper mould. The automatic opening and closing device is simple in structure and convenient to operate, not only realizes automatic opening and closing of the rotational molding die, but also realizes automatic compaction of the die, can save a large amount of manpower and time, and is more efficient and convenient in rotational molding production.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the compressing mechanism further comprises a transmission mechanism arranged between the compressing arm and the compressing driving cylinder.
The pressing driving cylinder transmits power to the pressing arm through the transmission mechanism, and swing driving of the pressing arm is achieved, so that the pressing arm can swing to a pressing position to press an upper die when the die is closed, and can swing to a releasing position away from the upper die before die opening to avoid die opening of the die.
Further, the transmission mechanism comprises a transmission gear and a transmission rack meshed with the transmission gear, an axle of the transmission gear is rotatably arranged on a support, the support is connected with a cylinder body of the compression driving cylinder, a compression arm is connected with an axle of the transmission gear, the compression arm synchronously rotates with the transmission gear, one end of the transmission rack is connected with a piston rod of the compression driving cylinder, and a cavity for the transmission rack to move is formed in the support.
The technical scheme has the advantages that the piston rod of the compression driving cylinder extends, the transmission rack moves upwards, the transmission rack drives the transmission gear to rotate, the compression arm and the transmission gear synchronously rotate, and the free end of the compression arm swings to the upper die or the upper die frame to compress the upper die; the piston rod of the compaction driving cylinder contracts and resets, the transmission rack moves downwards, the transmission rack drives the transmission gear to rotate reversely, the compaction arm rotates along with the transmission gear, the compacted free end swings to a position far away from the upper die, the upper die is loosened, the compaction arm can compact the upper die and open the die when swinging under the action of the compaction driving cylinder to realize die closing, and the die opening of the die can be kept away from the upper die to avoid interference.
Further, the number of the pressing arms is two, and the pressing arms are respectively arranged at two ends of the wheel shaft of the transmission gear.
The adoption of the further scheme has the beneficial effects that one pressing mechanism can have two pressing positions, the two pressing arms are pressed on the upper die frame, and the pressing effect is better when the rotational molding die is closed.
Further, the pressing arm is connected with the wheel shaft of the transmission gear in a key manner.
The technical scheme has the beneficial effect that the synchronous rotation of the pressing arm and the transmission gear is realized through key connection.
Further, the wheel shaft of the transmission gear is connected with the support through a bearing.
The adoption of the further scheme has the beneficial effects that the wheel shaft of the gear is connected with the support through the bearing to realize the rotary connection between the transmission gear and the support.
Further, a guide shaft is arranged at the other end of the transmission rack, and a guide hole for the axial movement of the guide shaft is arranged on the support.
The axial movement of the rack can be guided and limited, and meanwhile, the radial stress of the compression driving cylinder can be reduced, and the service life of the compression driving cylinder is prolonged.
Further, the compressing arm comprises a connecting part and a compressing part connected with the connecting part, the included angle between the connecting part and the compressing part is an obtuse angle, the connecting part is connected with the wheel shaft of the transmission gear, and the compressing part is provided with a compressing plane acting on the upper die frame.
The adoption of the further scheme has the beneficial effects that after the rotational molding die is assembled, the pressing mechanism acts, the pressing plane acts on the upper die frame, the pressing area is large, and the pressing effect is better.
Further, the device also comprises an auxiliary demoulding mechanism.
The technical scheme has the advantages that the auxiliary demoulding mechanism can assist in taking out the rotational moulding product from the lower die, so that the demoulding efficiency of the rotational moulding product is improved, and the processing efficiency of the rotational moulding die is improved.
Further, the auxiliary demoulding mechanism comprises at least one demoulding driving cylinder, a cylinder body of the demoulding driving cylinder is arranged on the fixing frame or the lower mould frame, and a rod hole for a piston rod of the demoulding driving cylinder to move is formed in the lower mould frame.
The beneficial effect of adopting above-mentioned further scheme is, in the piston rod of drawing of patterns actuating cylinder will stretch into the lower mould, in order to avoid the piston rod of drawing of patterns actuating cylinder to influence the product shaping at rotational moulding shaping process, the initial position of piston rod and the bottom internal surface parallel and level of lower mould or be less than the bottom internal surface of lower mould, after last mould is opened, the piston rod extension of accessible drawing of patterns actuating cylinder is ejecting supplementary drawing of patterns with the product.
Further, a piston rod of the demolding driving cylinder is connected with the rod hole in a sealing mode.
The technical scheme has the beneficial effects that in order to facilitate the discharging of the cooled rotational molding product, the piston rod of the demolding driving cylinder extends into the lower mold, and in order to ensure that the raw materials in the mold cavity are not leaked, the matching position of the piston rod and the rod hole is subjected to sealing treatment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a front view structure of the present utility model;
FIG. 3 is a schematic view of the compressing mechanism of the present utility model;
FIG. 4 is a right side view of the pressing mechanism of the present utility model
FIG. 5 is a schematic view of the internal structure of the support of the present utility model;
FIG. 6 is a schematic diagram of the mating structure of the axle and the hold-down arm of the transmission gear of the present utility model;
In the figure, 1, an upper die; 2. a die carrier is arranged; 3. a lower die; 4. a lower die frame; 5. an opening and closing driving cylinder; 6. compressing the driving cylinder; 7. a hold-down arm; 71. a connection part; 72. a pressing part; 8. a support; 9. a drive rack; 10. a transmission gear; 11. a key; 12. a bearing; 13. a guide shaft; 14. a fixing frame; 15. and (5) demolding and driving the cylinder.
Detailed Description
The principles and features of the present utility model are described below in connection with examples, which are set forth only to illustrate the present utility model and not to limit the scope of the utility model.
As shown in fig. 1-6, an automatic opening and closing compacting device of a rotational molding die comprises an upper die 1 and a lower die 3, wherein the upper die 1 is arranged on an upper die frame 2, the lower die 3 is arranged on a lower die frame 4 and comprises an opening and closing mechanism and a plurality of compacting mechanisms, the opening and closing mechanism comprises at least two opening and closing driving cylinders 5, the opening and closing driving cylinders 5 are arranged on the lower die frame 4, and a piston rod of the opening and closing driving cylinders 5 is connected with the upper die frame 2;
The pressing mechanism comprises a pressing arm 7 and a pressing driving cylinder 6 which is used for driving the pressing arm 7 to lock the upper die 1 when the upper die 1 is opened, and the pressing driving cylinder 6 is arranged on the lower die frame 4. The pressing mechanisms are uniformly arranged around the upper die 1.
The pressing mechanism further comprises a transmission mechanism arranged between the pressing arm 7 and the pressing driving cylinder 6. The compressing driving cylinder 6 transmits power to the compressing arm 7 through a transmission mechanism to realize the swing driving of the compressing arm 7, so that the condition that the compressing arm 7 can swing to a compressing position to compress the upper die 1 during die assembly and can swing to a releasing position away from the upper die 1 before die opening to avoid interference with die opening of the die is met.
The transmission mechanism comprises a transmission gear 10 and a transmission rack 9 meshed with the transmission gear 10, a wheel shaft of the transmission gear 10 is rotatably arranged on a support 8, the support 8 is connected with a cylinder body of the compression driving cylinder 6, the compression arm 7 is connected with a wheel shaft of the transmission gear 10, the compression arm 7 synchronously rotates with the transmission gear 10, one end of the transmission rack 9 is connected with a piston rod of the compression driving cylinder 6, and a cavity for the transmission rack 9 to move is formed in the support 8. The piston rod of the compaction driving cylinder 6 stretches, the transmission rack 9 moves upwards, the transmission rack 9 drives the transmission gear 10 to rotate, the compaction arm 7 and the transmission gear 10 synchronously rotate, and the free end of the compaction arm 7 swings to the upper die 1 or the upper die frame 2 to compact the upper die 1; the piston rod of the compaction driving cylinder 6 is contracted and reset, the transmission rack 9 moves downwards, the transmission rack 9 drives the transmission gear 10 to rotate reversely, the compaction arm 7 rotates along with the transmission gear 10, the compacted free end swings to a position far away from the upper die 1, the upper die 1 is loosened, and the compaction arm 7 can compact the upper die 1 when swinging under the action of the compaction driving cylinder 6 to realize die assembly and can keep away from the upper die 1 when opening the die to avoid interference with the die opening.
The two pressing arms 7 are respectively arranged at two ends of the wheel shaft of the transmission gear 10. One pressing mechanism can have two pressing positions, and two pressing arms 7 press the upper die frame 2, so that the pressing effect is better when the rotational molding die is closed.
The pressing arm 7 is connected with an axle key 11 of the transmission gear 10. The synchronous rotation of the pressing arm 7 and the transmission gear 10 is realized through the connection of the key 11.
The wheel axle of the transmission gear 10 is connected to the support 8 via a bearing 12. The wheel axle of the gear is connected with the support 8 through a bearing 12 to realize the rotation connection between the transmission gear 10 and the support 8.
The other end of the transmission rack 9 is provided with a guide shaft 13, and the support 8 is provided with a guide hole for the axial movement of the guide shaft 13. The axial movement of the rack can be guided and limited, and meanwhile, the radial stress of the compression driving cylinder 6 can be reduced, and the service life of the compression driving cylinder 6 is prolonged.
The pressing arm 7 comprises a connecting portion 71 and a pressing portion 72 connected with the connecting portion 71, an included angle between the connecting portion 71 and the pressing portion 72 is an obtuse angle, the connecting portion 71 is connected with a wheel shaft of the transmission gear 10, and a pressing plane acting on the upper die carrier 2 is arranged on the pressing portion 72. After the rotational molding die is assembled, the pressing mechanism acts, the pressing plane acts on the upper die frame 2, the pressing area is large, and the pressing effect is better.
The device also comprises an auxiliary demoulding mechanism. The auxiliary demoulding mechanism is added to improve the demoulding efficiency of the rotational moulding product, so that the processing efficiency of the rotational moulding mould is improved.
The auxiliary demoulding mechanism comprises at least one demoulding driving cylinder 15, a cylinder body of the demoulding driving cylinder 15 is arranged on the fixing frame 14 or the lower mould frame 4, and a rod hole for a piston rod of the demoulding driving cylinder 15 to move is formed in the lower mould frame 4. In order to avoid the influence of the piston rod of the demoulding driving cylinder 15 on the product forming in the rotational moulding process, the piston rod of the demoulding driving cylinder 15 is extended into the lower mould 3, the initial position of the piston rod is flush with or lower than the inner surface of the bottom of the lower mould 3, and after the upper mould 1 is opened, the product can be ejected out for assisting demoulding through the extension of the piston rod of the demoulding driving cylinder 15.
The piston rod of the demoulding driving cylinder 15 is connected with the rod hole in a sealing way. In order to facilitate the discharging of the cooled rotomoulding product, the piston rod of the demoulding driving cylinder 15 extends into the lower mould 3, and in order to ensure that the raw materials in the mould cavity are not leaked, the matching position of the piston rod and the rod hole is subjected to sealing treatment, such as a sealing ring.
According to the utility model, the automatic opening and closing of the upper die 1 is realized through the extension and contraction of the piston rod of the opening and closing driving cylinder 5, when the die needs to be opened, the pressing arm 7 of the pressing mechanism is far away from the upper die 1 under the action of the pressing driving cylinder 6, the pressing state of the upper die frame 2 is relieved, and then the piston rod of the opening and closing driving cylinder 5 extends to drive the upper die frame 2 to move upwards, so that the upper die 1 is jacked up; the demoulding driving cylinder 15 acts to eject the rotational moulding product out of the lower mould 3 for auxiliary demoulding, and then the formed product can be completely moved out of the mould by adopting an aerial crane or other structures; when the mould needs to be closed, the piston rod of the opening and closing driving cylinder 5 contracts and resets, the upper mould 1 is driven to move downwards through the upper mould frame 2, the upper mould 1 and the lower mould 3 are matched with the mould to be closed, then the pressing driving cylinder 6 of the pressing mechanism acts, and the pressing arm 7 swings to the upper mould frame 2 to lock the upper mould 1. The opening and closing locking device is simple in structure and convenient to operate, automatic opening and closing of the rotational molding die are achieved, automatic compression of the die is achieved, auxiliary demolding of products after rotational molding is achieved, manpower and time can be saved greatly, and rotational molding production is efficient and convenient.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The automatic opening and closing compacting device of the rotational molding die comprises an upper die (1) and a lower die (3), wherein an upper die frame (2) is arranged on the upper die (1), and a lower die frame (3) is arranged on the lower die (3), and the automatic opening and closing compacting device is characterized by comprising an opening and closing mechanism and a plurality of compacting mechanisms, wherein the opening and closing mechanism comprises at least two opening and closing driving cylinders (5), the opening and closing driving cylinders (5) are arranged on the lower die frame (3), and a piston rod of each opening and closing driving cylinder (5) is connected with the upper die frame (2);
the pressing mechanism comprises a pressing arm (7) and a pressing driving cylinder (6) used for driving the pressing arm (7) to lock the upper die (1) when the upper die is opened, wherein the pressing driving cylinder (6) is far away from the upper die (1), and the pressing driving cylinder (6) is arranged on the lower die frame (3).
2. The automatic opening and closing and pressing device of the rotational molding die according to claim 1, characterized in that the pressing mechanism further comprises a transmission mechanism arranged between the pressing arm (7) and the pressing driving cylinder (6).
3. The automatic opening and closing compressing device of the rotational molding die according to claim 2, wherein the transmission mechanism comprises a transmission gear (10) and a transmission rack (9) meshed with the transmission gear (10), a wheel shaft of the transmission gear (10) is rotatably arranged on a support (8), the support (8) is connected with a cylinder body of the compressing driving cylinder (6), the compressing arm (7) is connected with a wheel shaft of the transmission gear (10), one end of the transmission rack (9) is connected with a piston rod of the compressing driving cylinder (6), and a cavity for the transmission rack (9) to move is arranged in the support (8).
4. A rotomoulding die automatic opening and closing compacting device according to claim 3, characterized in that the number of compacting arms (7) is two, and the compacting arms are respectively arranged at two ends of the wheel shaft of the transmission gear (10).
5. A rotomoulding die automatic opening and closing compacting device according to claim 3, characterized in that the compacting arm (7) is connected with an axle key (11) of the transmission gear (10); and/or the wheel axle of the transmission gear (10) is connected with the support (8) through a bearing (12).
6. The automatic opening and closing compacting device of the rotational molding die according to claim 3, wherein a guide shaft (13) is arranged at the other end of the transmission rack (9), and a guide hole for axially moving the guide shaft (13) is arranged on the support (8).
7. The automatic opening and closing compressing device of the rotational molding die according to any one of claims 3 to 6, wherein the compressing arm (7) comprises a connecting part (71) and a compressing part (72) connected with the connecting part (71), an included angle between the connecting part (71) and the compressing part (72) is an obtuse angle, the connecting part (71) is connected with a wheel shaft of the transmission gear (10), and a compressing plane acting on the upper die carrier (2) is arranged on the compressing part (72).
8. The automatic opening and closing compression device for a rotational molding die according to any one of claims 1 to 6, further comprising an auxiliary demolding mechanism.
9. The automatic opening and closing compacting device of the rotational molding die according to claim 8, characterized in that the auxiliary demolding mechanism comprises at least one demolding driving cylinder (15), a cylinder body of the demolding driving cylinder (15) is arranged on a fixing frame (14) or the lower mold frame (3), and a rod hole for a piston rod of the demolding driving cylinder (15) to move is arranged on the lower mold frame (3).
10. Automatic opening and closing and compacting device for rotomoulding moulds according to claim 9, characterized in that the piston rod of the demoulding driving cylinder (15) is connected with the rod hole in a sealing way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322845823.1U CN221291997U (en) | 2023-10-23 | 2023-10-23 | Automatic closing and pressing device of rotational molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322845823.1U CN221291997U (en) | 2023-10-23 | 2023-10-23 | Automatic closing and pressing device of rotational molding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221291997U true CN221291997U (en) | 2024-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322845823.1U Active CN221291997U (en) | 2023-10-23 | 2023-10-23 | Automatic closing and pressing device of rotational molding die |
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| Country | Link |
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| CN (1) | CN221291997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118559942A (en) * | 2024-07-26 | 2024-08-30 | 象山刻铭热流道有限公司 | Hot cutting equipment |
-
2023
- 2023-10-23 CN CN202322845823.1U patent/CN221291997U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118559942A (en) * | 2024-07-26 | 2024-08-30 | 象山刻铭热流道有限公司 | Hot cutting equipment |
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