CN211492539U - Upper die for thermal forming of plastic cup - Google Patents
Upper die for thermal forming of plastic cup Download PDFInfo
- Publication number
- CN211492539U CN211492539U CN201922494504.4U CN201922494504U CN211492539U CN 211492539 U CN211492539 U CN 211492539U CN 201922494504 U CN201922494504 U CN 201922494504U CN 211492539 U CN211492539 U CN 211492539U
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- plate
- mold
- sleeve
- plastic cup
- thermoforming
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Abstract
The utility model discloses an mould on plastic cup thermoforming, including the cope match-plate pattern, its characterized in that, cope match-plate pattern top is equipped with one can be from top to bottom reciprocating motion's push pedal, the push pedal passes through at least one protruding mold core of push rod fixedly connected with, protruding mold core overcoat is equipped with a position sleeve, the position sleeve overcoat is equipped with an upper die plate subassembly, the position sleeve with elastic connection between the upper die plate subassembly, the push rod passes cope match-plate pattern and upper die plate subassembly. The utility model discloses a set up the position sleeve that can follow convex mould core elastic movement outside the convex mould core, realize the automatic positioning and the automatic drawing of patterns of plastic sheet among the thermoforming process, improve the yield, reduce cost.
Description
Technical Field
The utility model belongs to the technical field of thermoforming equipment, especially, relate to an mould on plastic cup thermoforming.
Background
Thermoforming is a special plastic processing method for processing thermoplastic sheet into various products, namely, heating a plate (sheet) to a softened state, enabling the plate (sheet) to be tightly attached to a mold surface under the action of external force, and cooling and shaping to obtain the product. Compared with injection molding, the method has the advantages of high production efficiency, low equipment investment and the like, and is particularly suitable for manufacturing products with thin walls and large surface areas. Common plastic materials include polystyrene, organic glass, polyvinyl chloride, and the like.
Plastic cups are usually thermoformed due to their thin walls and large surface area, and the specific forming process is: firstly, heating a plastic sheet to enable the plastic sheet to reach a molding temperature; the heated plastic sheet passes through a forming area, at the moment, a thermal forming die is closed, an upper shear die compresses the plastic sheet, a forming air chamber is formed between the plastic sheet and the upper shear die, compressed air is introduced into the forming air chamber, the plastic sheet is tightly attached to the forming die under the action of the compressed air, and meanwhile, a circulating cooling water path in the die cools the forming die to shape the formed sheet; the shaped formed sheet material completes shearing action by an upper shearing blade and a lower shearing blade, and the plastic cup cover product is sheared from the formed sheet material to obtain a single plastic cup cover product; then the ejector rod lifting driving mechanism drives the ejector rod mounting plate and the ejector rod to ascend, and the plastic cup cover is ejected out of the forming die, so that the plastic cup cover is separated from the forming die; then blowing air to the plastic cup cover to blow the plastic cup cover away from the thermal forming die. In the existing plastic cup production mold, after the plastic cup is shaped, the plastic cup is directly cut by the upper and lower cutting edges to form a single plastic cup, in the shaping and cutting processes of the plastic cup, the heated plastic sheet cannot be accurately positioned, so that in the forming process of the plastic cup, the plastic sheet is shifted or cut and dislocated, defective products are generated, the manufacturing cost is increased, meanwhile, the ejection rod is used for directly ejecting the plastic cup, the bottom of the plastic cup is damaged or deformed, and the product yield is reduced.
Accordingly, the inventors have sought to design a plastic cup thermoforming upper mold to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the upper die for thermoforming the plastic cup is characterized in that a positioning sleeve capable of elastically moving along with a convex die core is arranged outside the convex die core, so that the automatic positioning of a plastic sheet and the automatic demolding of the plastic cup in the thermoforming process are realized, the yield is improved, and the cost is reduced.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides an upper die for thermoforming of plastic cups, includes the cope match-plate pattern, cope match-plate pattern top is equipped with a push pedal that can up-and-down reciprocating motion, the push pedal passes through at least one protruding mold core of push rod fixedly connected with, protruding mold core overcoat is equipped with a position sleeve, the position sleeve overcoat is equipped with an upper die plate subassembly, the position sleeve with elastic connection between the upper die plate subassembly, the push rod passes cope match-plate pattern and upper die plate subassembly.
Furthermore, the side surface of the male mold core is arranged in an inward inclined mode, the inner diameter of the upper end of the positioning sleeve is smaller than the inner diameter of the lower end of the positioning sleeve, and the minimum inner diameter of the positioning sleeve is smaller than or equal to the maximum outer diameter of the male mold core.
Further, the opening of the positioning sleeve is arranged in an outward inclined mode.
Further, the upper die plate assembly comprises a supporting plate and an upper die sleeve plate, the upper die base plate is fixedly connected with the upper die sleeve plate through the supporting plate, and the supporting plate is located between the upper die base plate and the upper die sleeve plate.
Further, the locating sleeve extends upwards along the push rod to form an extending portion, and the extending portion penetrates through the supporting plate and is hung in the upper die base plate.
Furthermore, a spring is sleeved outside the extension part, and the positioning sleeve is elastically connected with the supporting plate through the spring.
Furthermore, the supporting plate and the push rod are in sealing contact with the positioning sleeve, and the upper die sleeve plate is in sealing contact with the positioning sleeve through a sleeve.
Furthermore, a water inlet is arranged on one side face of the upper plate assembly, a cooling channel is arranged on the die assembly face of the upper plate assembly, and the water inlet is communicated with the cooling channel.
Furthermore, a positioning column is arranged on the die assembly surface of the upper die plate assembly.
Compared with the prior art, the utility model discloses an mould on plastic cup thermoforming through set up the position sleeve that can follow convex mould core elastic movement outside the convex mould core, realizes the automatic positioning of plastic sheet among the thermoforming process, prevents that the plastic sheet from shifting or shearing the dislocation phenomenon appearing in the thermoforming process, improves the yield, and reduce cost simultaneously, can also make plastic cup automatic demoulding, improves drawing of patterns efficiency.
Description of the drawings:
FIG. 1 is a cross-sectional view of the upper mold for thermoforming plastic cups according to the present invention;
fig. 2 is an enlarged view at a in fig. 1.
Illustration of the drawings:
1. push plate, 2, cope match-plate pattern board, 21, fixed head, 3, cope match-plate pattern spare, 31, backup pad, 311, water inlet, 312, cavity, 32, upper die sleeve board, 321, reference column, 322, sleeve, 4, spring, 5, push rod, 6, protruding mold core, 7, position sleeve.
Detailed Description
The following embodiments of the present invention will be specifically explained with reference to the accompanying drawings, which are only used for reference and illustration, and do not limit the scope of the present invention.
Referring to fig. 1, an upper mold for thermoforming a plastic cup includes a push plate 1 capable of reciprocating up and down, an upper mold base plate 2 and an upper mold plate assembly 3.
Referring to fig. 1, the upper mold base plate 2 is fixed on a frame of a thermoforming machine, the push plate 1 is located above the upper mold base plate 2, the push plate 1 can reciprocate up and down under the pushing of a pushing mechanism of the thermoforming machine, at least one push rod 5 is fixed on the push plate 1, a convex mold core 6 is fixed at the tail end of each push rod 5, the side surface of each convex mold core 6 is arranged in an inward inclined manner, and the push rod 5 penetrates through the upper mold base plate 2 and the upper mold plate assembly 3.
Referring to fig. 1, the upper mold plate assembly 3 is fixed at the lower end of the upper mold base plate 2, the upper mold plate assembly 3 includes a support plate 31 and an upper mold sleeve plate 32, the upper mold base plate 2 is fixedly connected with the upper mold sleeve plate 32 through the support plate 31, the support plate 31 is located between the upper mold base plate 2 and the upper mold sleeve plate 32, the male mold core 6 is externally sleeved with a positioning sleeve 7 which is positioned together and assists in shearing, the positioning sleeve 7 is accommodated in a cavity 312 of the support plate 31, the inner diameter of the upper end of the positioning sleeve 7 is smaller than the inner diameter of the lower end of the positioning sleeve 7, the minimum inner diameter of the positioning sleeve 7 is smaller than or equal to the maximum outer diameter of the male mold core 6, the opening of the positioning sleeve 7 is arranged in an outward inclined manner, the support plate 31 and the upper mold sleeve plate 32 are sleeved outside the positioning sleeve 7, the positioning sleeve 7 extends upward along, this extension overcoat is equipped with a spring 4, and spring 4 is located fixed head 21 below, and position sleeve 7 is through this spring 4 and backup pad 31 elastic connection, and backup pad 31 and push rod 5 all with between the position sleeve 7 through sealing washer sealing contact, and the pot head is equipped with a sleeve 322 that has limiting displacement under the position sleeve 7, and the inboard butt position sleeve 7 of this sleeve 322 and the outside and go up through sealing washer sealing contact between die sleeve board 32.
Referring to fig. 1, a water inlet 311 is formed in one side surface of the supporting plate 31, a cooling channel (not shown) is formed in a joint surface of the upper die sleeve plate 32, and the water inlet 311 is communicated with the cooling channel. A positioning post 321 is provided on the mold closing surface of the upper mold sleeve 32.
Referring to fig. 1 and 2, the working principle of the upper die for thermoforming the plastic cup of the present invention is: the heated plastic sheet is moved between an upper die and a lower die, the upper die and the lower die (not shown) are matched, a push plate 1 pushes a convex die core 6 to press the sheet downwards, the convex die core 6 extends into a concave die core of the lower die, the convex die core 6 and the concave die core of the lower die tightly press the sheet to form a plastic cup body, meanwhile, a spring 4 recovers elastic deformation, the spring 4 pushes a positioning sleeve 7 to move downwards, the positioning sleeve 7 is matched with a lower shearing blade of the lower die to press the sheet, when the pressure of the upper die and the lower die reaches a certain value, the lower shearing blade of the lower die cuts off the sheet to form a single plastic cup, the thermal forming of the plastic cup is completed, the upper die and the lower die are opened, the convex die core 6 is pulled by the push plate 1 to move upwards, at the moment, all or part of the plastic cup is positioned outside the convex die core 6 and moves upwards along with the convex, when the maximum outer diameter of the male mold core 6 is abutted to the minimum inner diameter of the positioning sleeve 7, the positioning sleeve 7 peels off the plastic cup on the male mold core 6, the plastic cup is separated from the mold, at the moment, the spring 4 is compressed, the positioning sleeve 7 and the male mold core 6 are both retracted into the upper mold plate component 3, the thermal forming is completed, and the cycle is repeated.
Compared with the prior art, the utility model discloses an upward mould has realized the automatic positioning of plastic sheet and the automatic release after the plastics cup die sinking, has the drawing of patterns smooth and easy advantage with the improvement yield, prevents that mould drawing of patterns in-process plastics cup warp.
The above disclosure is only for the preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and the scope of the present invention is not intended to be limited thereby.
Claims (9)
1. The utility model provides an upper die for plastic cup thermoforming, includes the cope match-plate pattern, its characterized in that, cope match-plate pattern top is equipped with a push pedal that can up-and-down reciprocating motion, the push pedal passes through at least one protruding mold core of push rod fixedly connected with, protruding mold core overcoat is equipped with a position sleeve, the position sleeve overcoat is equipped with an upper die plate subassembly, the position sleeve with elastic connection between the upper die plate subassembly, the push rod passes cope match-plate pattern and upper die plate subassembly.
2. The upper mold for thermoforming a plastic cup as claimed in claim 1, wherein the side of the male mold core is disposed obliquely inward, the inner diameter of the upper end of the positioning sleeve is smaller than the inner diameter of the lower end of the positioning sleeve, and the minimum inner diameter of the positioning sleeve is smaller than or equal to the maximum outer diameter of the male mold core.
3. A top mold for thermoforming a plastic cup as in claim 2, wherein the opening of the retaining sleeve is angled outwardly.
4. The plastic cup upper thermoforming mold of claim 1, wherein the upper mold plate assembly comprises a support plate and an upper mold sleeve plate, the upper mold base plate is fixedly connected with the upper mold sleeve plate through the support plate, and the support plate is located between the upper mold base plate and the upper mold sleeve plate.
5. A plastic cup upper thermoforming mold as claimed in claim 4, wherein said locating sleeve extends upwardly along said push rod forming an extension that passes through said support plate and is suspended within said upper mold plate.
6. The upper plastic cup thermoforming mold of claim 5, wherein a spring is disposed around the extension, and the positioning sleeve is resiliently coupled to the support plate via the spring.
7. The upper plastic cup thermoforming mold of claim 4, wherein said support plate and said push rod are in sealing contact with said locating sleeve, and said upper mold sleeve plate is in sealing contact with said locating sleeve through a sleeve.
8. The upper plastic cup thermoforming mold according to claim 1, wherein a water inlet is formed in one side face of the upper mold plate assembly, a cooling channel is formed in a mold clamping face of the upper mold plate assembly, and the water inlet is communicated with the cooling channel.
9. The upper plastic cup thermoforming mold of claim 1, wherein locating posts are provided on mating faces of the upper plate assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922494504.4U CN211492539U (en) | 2019-12-30 | 2019-12-30 | Upper die for thermal forming of plastic cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922494504.4U CN211492539U (en) | 2019-12-30 | 2019-12-30 | Upper die for thermal forming of plastic cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211492539U true CN211492539U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922494504.4U Active CN211492539U (en) | 2019-12-30 | 2019-12-30 | Upper die for thermal forming of plastic cup |
Country Status (1)
| Country | Link |
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| CN (1) | CN211492539U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959604A (en) * | 2021-02-02 | 2021-06-15 | 西安双健包装有限公司 | Plastic cup forming machine and forming process thereof |
| WO2023034767A3 (en) * | 2021-09-01 | 2023-11-30 | Chep Technology Pty Limited | Compression molded double wall blocks for a pallet and associated methods |
-
2019
- 2019-12-30 CN CN201922494504.4U patent/CN211492539U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959604A (en) * | 2021-02-02 | 2021-06-15 | 西安双健包装有限公司 | Plastic cup forming machine and forming process thereof |
| CN112959604B (en) * | 2021-02-02 | 2022-09-30 | 西安双健包装有限公司 | Plastic cup forming machine and forming process thereof |
| WO2023034767A3 (en) * | 2021-09-01 | 2023-11-30 | Chep Technology Pty Limited | Compression molded double wall blocks for a pallet and associated methods |
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