CN111791446A - Injection molding machine for large plastic products - Google Patents
Injection molding machine for large plastic products Download PDFInfo
- Publication number
- CN111791446A CN111791446A CN202010665114.3A CN202010665114A CN111791446A CN 111791446 A CN111791446 A CN 111791446A CN 202010665114 A CN202010665114 A CN 202010665114A CN 111791446 A CN111791446 A CN 111791446A
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- China
- Prior art keywords
- injection molding
- sliding plate
- die
- plate
- forming die
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/0408—Injection moulding apparatus using movable moulds or mould halves involving at least a linear movement
- B29C45/0416—Injection moulding apparatus using movable moulds or mould halves involving at least a linear movement co-operating with fixed mould halves
Abstract
The invention discloses an injection molding machine for large plastic products, which comprises an injection molding device and a forming device, wherein the injection molding device comprises a plastic injection molding machine body and a plastic injection molding machine body; the forming device comprises a fixed frame and a rack; the periphery of the fixing frame is supported and positioned by a plurality of stand columns, the bottom of the fixing frame is fixedly provided with an upper molding die, and the rear side of the upper molding die is provided with a sprue communicated with the front end of the injection molding device; the rack is positioned below the fixed frame, two slide rails are arranged on the rack, a slide plate is arranged on the two slide rails, and the slide plate is driven by the driving device; the sliding plate is provided with a through hole or two through holes, and a forming lower die is arranged on each through hole; and the lower part of the rack is provided with a lifting plate at a position right below the upper forming die, and the lifting plate is driven by a hydraulic lifting mechanism to ascend and drive the lower forming die and the upper forming die to be matched for injection molding operation. The invention adopts a lower opening structure, has the characteristics of quick opening and low energy consumption, and fundamentally eliminates the potential safety hazard of falling of the die.
Description
Technical Field
The invention relates to a plastic injection molding machine, in particular to an injection molding machine for large plastic products.
Background
Plastics (including TPR, TPE, PVC, etc.) are widely used for producing various articles of daily use due to their light weight, chemical stability, and corrosion resistance.
At present, common plastic products are smaller, the scale of an injection molding machine is smaller, and the plastic products are more convenient to process and discharge.
However, for products such as an integrated plastic mattress, the size of the product can reach 2.0m by 2.0m, and the corresponding injection mold is large and heavy, if a traditional upper mold opening and mold releasing structure is still adopted, not only is mold opening difficult, but also the upper mold lifted during mold opening is very difficult to position, and potential safety hazards of falling exist.
Disclosure of Invention
Aiming at the problems, the invention designs the injection molding machine for large plastic products, which adopts a lower opening structure, can directly utilize the dead weight of a lower die to realize die opening in use, has the characteristics of quick die opening and low energy consumption, and fundamentally eliminates the potential safety hazard of die falling.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an injection molding machine of large-scale plastic goods, includes injection molding device and forming device, the horizontal overall arrangement of forming device sets up the front side at the injection molding device, its characterized in that: the forming device comprises a fixed frame and a rack; the periphery of the fixing frame is supported and positioned by a plurality of stand columns, the bottom of the fixing frame is fixedly provided with an upper forming die, and a sprue is arranged at the rear side of the upper forming die and communicated with the front end of the injection molding device; the rack is positioned below the fixed frame and is transversely distributed, two sliding rails are arranged on the rack, a sliding plate is arranged on the two sliding rails, and the sliding plate can move left and right relative to the sliding rails under the driving of the driving device; the sliding plate is provided with a through hole, a lower forming die which can be vertically separated relative to the sliding plate is arranged on the through hole, and the lower forming die and the upper forming die can be opposite to each other or staggered in a moving-out mode by the left and right movement of the sliding plate; or two through holes are distributed on the sliding plate at intervals, a forming lower die which can be separated up and down relative to the sliding plate is arranged on each through hole, and one forming lower die is positioned right below the forming upper die after the sliding plate moves left and right; and the lower part of the rack is provided with a lifting plate at a position right below the upper forming die, and the lifting plate is driven by a hydraulic lifting mechanism to ascend and penetrate through the through hole on the sliding plate and drive the lower forming die on the lifting plate to ascend and be matched with the upper forming die so as to perform injection molding operation.
More specifically, the hydraulic lifting mechanism comprises two lifting oil cylinders which are distributed at intervals, the cylinder bodies of the two lifting oil cylinders are fixedly connected together through a fixing plate, and the piston rods of the two lifting oil cylinders are connected with the lifting plate together; meanwhile, the lifting plate is provided with a plurality of guide posts downwards, and the guide posts penetrate through the guide holes in the fixing plate and are connected with a connecting plate.
More specifically, the injection molding device is at least two injection molding machines, and the injection molding machines are arranged at intervals; the number of gates arranged on the rear side of the upper molding die corresponds to the number of the injection molding machines, and the front end of each injection molding machine is communicated with the gate of the corresponding part.
More specifically, each pouring gate of the upper forming die is composed of a straight channel and a plurality of discharging holes distributed in a radial shape, inlets of the discharging holes are communicated with the straight channel, and outlets of the discharging holes are communicated with a cavity of the upper forming die.
More specifically, the sliding driving device of the sliding plate is two driving oil cylinders which are respectively arranged at the front side and the rear side of the sliding plate; the cylinder body of one of the oil cylinders is fixedly connected with the left side of the frame, and the rod of the oil cylinder is fixedly connected with the right side of the sliding plate; the cylinder body of the other oil cylinder is fixedly connected with the right side of the frame, and the rod of the oil cylinder is fixedly connected with the left side of the sliding plate.
More specifically, the sliding plate sliding driving device comprises a gear and a rack, wherein the rack is arranged at the bottom of the sliding plate and is meshed with the gear positioned on the rack, and the gear is connected with the driving motor through a transmission.
More specifically, the slide plate is provided with a proximity control switch on a rear side surface corresponding to each lower mold, and the proximity control switch triggers a signal to stop the movement of the slide plate when approaching a trigger switch on the injection molding device.
More specifically, a guide mechanism is arranged between the lower forming die and the sliding plate, the guide mechanism comprises a plurality of groups of guide rods and guide holes, the guide rods and the guide holes of each group are correspondingly arranged on the surface of the sliding plate and the bottom surface of the lower forming die respectively, and the top ends of the guide rods are arranged in a conical shape.
The invention relates to an injection molding machine for large plastic products, wherein a sliding plate of a molding device is provided with a molding lower die or two molding lower dies.
When being a shaping lower mould, this shaping lower mould just is located the below of mould on the shaping during the compound die, and the lifter plate rises this moment and drives this shaping lower mould and rises and mould compound die in the shaping in order to carry out injection moulding, and on the shaping lower mould descends and gets back to the slide again after the completion of moulding plastics, then the slide removes and moves whole shaping lower mould outward and staggers with mould on the shaping to carry out off-the-shelf unloading operation.
When the two lower forming dies are used, one lower forming die is opposite to the upper forming die after the sliding plate moves every time, the lower forming die can be driven by the lifting plate to ascend and be matched with the upper forming die to perform injection molding processing, and the other lower forming die completely deviates from the upper forming die and can directly perform finished product blanking operation.
Above no matter be a shaping lower mould structure or two shaping lower mould structures, it can both realize the injection moulding of large-scale plastic goods, and this structure is the die sinking structure setting down, can directly utilize the dead weight of shaping lower mould to realize the die sinking in the use, has the characteristics that the die sinking is swift, and the power consumption is low, and whole unloading in-process shaping lower mould is placed on the slide completely simultaneously, need not the location and also can not have the problem of dropping, can fundamentally eliminate the accident and drop and injure people's potential safety hazard.
Drawings
FIG. 1 is a top plan view of a planar structure of the present invention;
FIG. 2 is a plan view of the lower mold of the present invention after displacement with the slide plate;
FIG. 3 is a plan view of the frame of the present invention;
FIG. 4, a side view of the present invention;
FIG. 5 is a schematic structural view of the lifter plate and hydraulic lifter mechanism of the present invention;
FIG. 6 is a cross-sectional view of the upper mold of the present invention;
FIG. 7 is an enlarged view of a portion A of FIG. 4 according to the present invention;
FIG. 8 is a plan view of a second embodiment of the present invention;
FIG. 9 is a plan view showing a structure of a lower mold according to a second embodiment of the present invention after being displaced with a slide plate.
Detailed Description
As shown in fig. 1-7, an injection molding machine for large plastic products comprises an injection molding device 1 and a molding device.
The forming device is transversely arranged on the front side of the injection molding device, and the whole forming device comprises a fixed frame 2 and a machine frame 3.
The periphery of the fixed frame 2 is supported and positioned by a plurality of upright posts 21, an upper forming mold 4 is fixedly arranged at the bottom of the fixed frame 2, and a sprue 41 is arranged at the rear side of the upper forming mold 4 and communicated with the front end of the injection molding device 1.
In order to increase the injection efficiency, the injection molding device 1 includes at least two injection molding machines 1a, and the injection molding machines 1a are arranged at intervals in consideration of the requirement of large-size injection molding of large plastic products. In the present illustration, two injection molding machines 1a are used, and in practice, three or more injection molding machines are used as needed.
The number of gates 41 provided on the rear side of the upper mold 4 corresponds to the number of the injection molding machines 1a, and the front end of each injection molding machine 1a communicates with the gate 41 at the corresponding portion.
Meanwhile, in order to ensure that all parts of the cavity can be fully and uniformly fed, each gate 41 of the upper forming die 4 is composed of a straight channel 411 and a plurality of discharging holes 412 distributed in a radial shape, inlets of the discharging holes 412 are communicated with the straight channel 411, and outlets of the discharging holes 412 are communicated with the cavity 42 of the upper forming die. Through the structure arrangement, the plastic of each sprue 41 can quickly and uniformly enter the cavity 42, so that the feeding speed is accelerated, and meanwhile, the feeding uniformity of each part is ensured.
The machine frame 3 is located below the fixed frame 2 and is transversely arranged, two slide rails 31 are arranged on the machine frame 3, a slide plate 32 is installed on the two slide rails 31, and the slide plate 32 can move left and right relative to the slide rails under the drive of the driving device 33. Two through holes 321 are distributed on the sliding plate 32 at intervals, a lower forming die 5 which can be separated up and down relative to the sliding plate 32 is arranged on each through hole 321, and after the sliding plate 32 moves left and right, one lower forming die 5 is positioned right below the upper forming die 4.
Here, the driving means 33 for sliding the slide plate 32 is two driving cylinders 33a and 33b, and the two driving cylinders 33a and 33b are respectively installed on the front and rear sides of the slide plate 32. Wherein, the cylinder body 33a1 of the oil cylinder 33a is fixedly connected with the left side of the frame 3, and the oil cylinder rod 33a2 is fixedly connected with the right side of the sliding plate 32; the cylinder body 33b1 of the other oil cylinder 33b is fixedly connected with the right side of the frame 3, and the oil cylinder rod 33b2 is fixedly connected with the left side of the sliding plate 32. Two sides of the two driving oil cylinders 33a and 33b are arranged oppositely, so that the balance and stability of the driving force of the sliding plate 32 can be effectively ensured, and the sliding plate 32 can be ensured to move stably.
Here, the above driving device 33 may also employ a meshing transmission mechanism of a gear and a rack, the rack being provided at the bottom of the slide plate 32 and meshing with a gear positioned on the frame 3, the gear being connected to the driving motor through a transmission.
In practice, the driving structure may be other structures as long as the slide plate 32 can reciprocate left and right along the slide rail 31.
In order to control the accuracy of the slide 32 moving in place, the slide 32 is provided with a proximity control switch 61 on the rear side corresponding to each lower mold 5, and a trigger switch 62 is provided on the injection molding apparatus 1. In use, when the corresponding proximity control switch 61 is in proximity to the trigger switch 62, a trigger signal is triggered to stop the movement of the slide plate 32 for a corresponding operation.
The lower part of the frame 3 is provided with a lifting plate 7 at a position right below the upper forming die 4, the lifting plate 7 is driven by the hydraulic lifting mechanism 8 to ascend and penetrate through the through hole 321 on the sliding plate 32, and the lifting plate drives the lower forming die 5 to ascend and is matched with the upper forming die 4 to perform injection molding operation.
The hydraulic lifting mechanism 8 comprises two lifting oil cylinders 81 which are distributed at intervals, the cylinder bodies of the two lifting oil cylinders 81 are fixedly connected together through a fixing plate 82, and piston rods 811 of the two lifting oil cylinders 82 are connected with the lifting plate 7 together; meanwhile, the lifting plate 7 is provided with a plurality of guide posts 83 facing downward, and each guide post 83 passes through a guide hole 821 on the fixing plate 83 and is connected with a connecting plate 84.
In operation, when the slide plate 32 stops moving, the lifting plate 7 is driven by the hydraulic lifting mechanism 8 to vertically lift through the through hole 321 of the slide plate 32, and then supports the lower molding die 5 and lifts the lower molding die 5 along with it, until the lower molding die 5 is combined with the upper molding die 4 to perform an injection molding operation.
After the injection molding is completed, the lifting plate 7 is lowered to be reset, and the lower molding die 5 sinks under the action of self weight and is placed back on the sliding plate 32 again. The slide 32 is then moved again to move the injection-finished lower mold 5 with the finished product 9 out for the blanking operation, while the other lower mold 5 is moved over for the injection-molding operation.
Here, in order to ensure effective positioning during the up-and-down lifting process of the lower forming die 5, a guide mechanism 10 is disposed between the lower forming die and the sliding plate, and the structure of the guide mechanism 10 is as shown in fig. 7, the guide mechanism 10 includes a plurality of groups of guide rods 101 and guide holes 102 disposed around the through hole, and the guide rods 101 and the guide holes 102 of each group are respectively disposed on the surface of the sliding plate 32 and the bottom surface of the lower forming die 5. In the present illustration, the guide 101 is provided on the slide plate 32 and the guide hole 102 is provided on the bottom surface of the lower molding die 5, and the positions of the guide 101 and the guide hole 102 may be interchanged in practice.
The top end of the guide rod 101 is tapered to realize automatic correction and guidance within a certain error range when being inserted into the guide hole 102.
As shown in fig. 8 and 9, the present invention is another embodiment, which is different from the previous embodiment only in that a through hole 321 is formed in the slide plate 32. The through hole 321 is provided with a lower forming die 5 which can be vertically separated relative to the sliding plate 32, and the lower forming die 5 and the upper forming die 4 can be opposite or staggered by moving the sliding plate 32 left and right.
When the die is closed, the through hole 321 and the lower forming die 5 thereon are just positioned below the upper forming die 4, at this time, the lifting plate 7 is lifted to drive the lower forming die 5 to be lifted to be closed with the upper forming die 4 for injection molding, after the injection molding is finished, the lower forming die 5 is lowered to return to the sliding plate 32 again, and then the sliding plate 32 moves to move the whole lower forming die 5 outwards to be staggered with the upper forming die 4, so as to perform the blanking operation of finished products. After the material discharging is completed, the slide plate 32 is reset in the reverse direction and moves to the position right below the lower molding die 4 again, so that new injection molding processing is performed.
In summary, the injection molding machine for large plastic products designed by the present invention has one or two molding lower dies 5 on the slide plate 32 of the molding device, but can realize the injection molding of large plastic products regardless of one or two molding lower die structures.
Above structure is the setting of a lower open die structure, can directly utilize the dead weight of shaping lower mould 5 to realize the die sinking in the use, has the characteristics that the die sinking is swift, and the power consumption is low, and whole unloading in-process shaping lower mould 5 is placed on slide 32 completely simultaneously, need not the location and also can not have the problem of dropping, can fundamentally eliminate the accident and drop and injure people's potential safety hazard.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides an injection molding machine of large-scale plastic goods, includes injection molding device and forming device, the horizontal overall arrangement of forming device sets up the front side at the injection molding device, its characterized in that: the forming device comprises a fixed frame and a rack; the periphery of the fixing frame is supported and positioned by a plurality of stand columns, the bottom of the fixing frame is fixedly provided with an upper forming die, and a sprue is arranged at the rear side of the upper forming die and communicated with the front end of the injection molding device; the rack is positioned below the fixed frame and is transversely distributed, two sliding rails are arranged on the rack, a sliding plate is arranged on the two sliding rails, and the sliding plate can move left and right relative to the sliding rails under the driving of the driving device; the sliding plate is provided with a through hole, a lower forming die which can be vertically separated relative to the sliding plate is arranged on the through hole, and the lower forming die and the upper forming die can be opposite to each other or staggered in a moving-out mode by the left and right movement of the sliding plate; or two through holes are distributed on the sliding plate at intervals, a forming lower die which can be separated up and down relative to the sliding plate is arranged on each through hole, and one forming lower die is positioned right below the forming upper die after the sliding plate moves left and right; and the lower part of the rack is provided with a lifting plate at a position right below the upper forming die, and the lifting plate is driven by a hydraulic lifting mechanism to ascend and penetrate through the through hole on the sliding plate and drive the lower forming die on the lifting plate to ascend and be matched with the upper forming die so as to perform injection molding operation.
2. The large plastic product injection molding machine of claim 1, wherein: the hydraulic lifting mechanism comprises two lifting oil cylinders which are distributed at intervals, the cylinder bodies of the two lifting oil cylinders are fixedly connected together through a fixing plate, and the piston rods of the two lifting oil cylinders are connected with the lifting plate together; meanwhile, the lifting plate is provided with a plurality of guide posts downwards, and the guide posts penetrate through the guide holes in the fixing plate and are connected with a connecting plate.
3. The large plastic product injection molding machine of claim 1, wherein: the injection molding device is at least two injection molding machines, and the injection molding machines are arranged at intervals; the number of gates arranged on the rear side of the upper molding die corresponds to the number of the injection molding machines, and the front end of each injection molding machine is communicated with the gate of the corresponding part.
4. An injection molding machine for large plastic articles according to any of claims 1-3, characterized in that: each pouring gate of the upper forming die is composed of a straight channel and a plurality of discharging holes distributed in a radial shape, inlets of the discharging holes are communicated with the straight channel, and outlets of the discharging holes are communicated with a cavity of the upper forming die.
5. An injection molding machine for large plastic articles according to any of claims 1-3, characterized in that: the sliding driving device of the sliding plate is two driving oil cylinders which are respectively arranged at the front side and the rear side of the sliding plate; the cylinder body of one of the oil cylinders is fixedly connected with the left side of the frame, and the rod of the oil cylinder is fixedly connected with the right side of the sliding plate; the cylinder body of the other oil cylinder is fixedly connected with the right side of the frame, and the rod of the oil cylinder is fixedly connected with the left side of the sliding plate.
6. An injection molding machine for large plastic articles according to any of claims 1-3, characterized in that: the sliding driving device of the sliding plate comprises a gear and a rack, wherein the rack is arranged at the bottom of the sliding plate and is meshed with the gear positioned on the rack, and the gear is connected with the driving motor through a speed changer.
7. An injection molding machine for large plastic articles according to any of claims 1-3, characterized in that: and the sliding plate is provided with an approach control switch on the rear side surface corresponding to each lower molding die, and the approach control switch triggers a signal to stop the movement of the sliding plate when approaching a trigger switch on the injection molding device.
8. An injection molding machine for large plastic articles according to any of claims 1-3, characterized in that: a guide mechanism is arranged between the lower forming die and the sliding plate and comprises a plurality of groups of guide rods and guide holes, the guide rods and the guide holes of each group are correspondingly arranged on the surface of the sliding plate and the bottom surface of the lower forming die respectively, and the top ends of the guide rods are arranged to be conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010665114.3A CN111791446A (en) | 2020-07-10 | 2020-07-10 | Injection molding machine for large plastic products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010665114.3A CN111791446A (en) | 2020-07-10 | 2020-07-10 | Injection molding machine for large plastic products |
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| Publication Number | Publication Date |
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| CN111791446A true CN111791446A (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010665114.3A Pending CN111791446A (en) | 2020-07-10 | 2020-07-10 | Injection molding machine for large plastic products |
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| CN (1) | CN111791446A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112497650A (en) * | 2020-12-04 | 2021-03-16 | 李曼 | Injection molding machine convenient for installing and fixing mold |
| CN113246351A (en) * | 2021-06-28 | 2021-08-13 | 佛山伊之密精密橡胶机械有限公司 | Rubber processing equipment |
| CN113829575A (en) * | 2021-11-29 | 2021-12-24 | 佛山伊之密精密橡胶机械有限公司 | Automatic rubber production line and control method |
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| CN113829575A (en) * | 2021-11-29 | 2021-12-24 | 佛山伊之密精密橡胶机械有限公司 | Automatic rubber production line and control method |
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Application publication date: 20201020 |
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| RJ01 | Rejection of invention patent application after publication |