CN107116778B - Integrated forming die for manufacturing plastic tray with base and using method thereof - Google Patents

Integrated forming die for manufacturing plastic tray with base and using method thereof Download PDF

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Publication number
CN107116778B
CN107116778B CN201710442580.3A CN201710442580A CN107116778B CN 107116778 B CN107116778 B CN 107116778B CN 201710442580 A CN201710442580 A CN 201710442580A CN 107116778 B CN107116778 B CN 107116778B
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China
Prior art keywords
die
upper die
sliding
lower die
plastic
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CN201710442580.3A
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Chinese (zh)
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CN107116778A (en
Inventor
王丽
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Xiamen Xiangdachuan Industrial Co ltd
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Xiamen Xiangdachuan Industrial Co ltd
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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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B29C51/105—Twin sheet thermoforming, i.e. deforming two parallel opposing sheets or foils at the same time by using one common mould cavity and without welding them together during thermoforming
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/12—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor of articles having inserts or reinforcements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pallets (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The invention discloses an integrated forming die for manufacturing a plastic tray with a base and a use method thereof, wherein a pre-embedded reinforcement is arranged in the base, and the integrated forming die is characterized by comprising an upper die and a lower die; the lower die is provided with at least two rows of bulges for forming the foot piers; the upper die is provided with at least two grooves, and each groove is used for accommodating the same row of bulges when the die is closed; two opposite sliding grooves are formed in the positions, located between two adjacent protrusions in the same row, of the two side faces of the groove during die assembly, sliding blocks capable of sliding in and out of the groove are installed in the two sliding grooves, and the end portions of the two sliding blocks are tightly abutted when sliding in the groove to form holes between the adjacent foot piers. The invention can finish the integral molding of the base with the embedded reinforcement and the plastic tray body.

Description

Integrated forming die for manufacturing plastic tray with base and using method thereof
Technical Field
The invention relates to the field of molds, in particular to an integrated molding mold for manufacturing a plastic tray with a base and a use method thereof.
Background
Pallets are horizontal platform devices for containing, stacking, handling and transporting goods and products, and are now widely used in the fields of production, transportation, storage and circulation. The tray is used as important loading, unloading, storing and transporting equipment in the logistics operation process, and plays a great role in modern logistics when being matched with a forklift.
The plastic trays are generally composed of a support panel and foot piers, gaps for inserting fork of a forklift are formed between the foot piers, the strength of the whole structure is reduced due to the gaps, so that the strength of the plastic trays can be increased by adhering a plastic base to the same row of foot piers, and further, reinforcing pieces are embedded in the plastic base to further increase the strength of the structure.
For this purpose, the present inventors devised a plastic tray in which a base and a footer are integrally formed, and a reinforcement is also pre-buried in the base, which includes a support panel 10, a footer 20, a base 30 integrally formed with the footer, and a reinforcement 40 built in the base, as shown in fig. 1, and developed an integrally formed mold for manufacturing a plastic tray with a base, and a method of using the same.
Disclosure of Invention
The invention aims to provide an integrated forming die for manufacturing a plastic tray with a base, which can finish the integrated forming of the base with the embedded reinforcement and the foot pier.
The purpose is also to provide a use method of the integrated forming die.
In order to achieve the above object, the technical scheme of the present invention is as follows:
the integrated forming die is used for manufacturing the plastic tray with the base, wherein the embedded reinforcement is arranged in the base, and the integrated forming die comprises an upper die and a lower die;
the lower die is provided with at least two rows of bulges for forming the foot piers;
the upper die is provided with at least two grooves, and each groove is used for accommodating the same row of bulges when the die is closed;
two opposite sliding grooves are formed in the positions, located between two adjacent protrusions in the same row, of the two side faces of the groove during die assembly, sliding blocks capable of sliding in and out of the groove are installed in the two sliding grooves, and the end portions of the two sliding blocks are tightly abutted when sliding in the groove to form holes between the adjacent foot piers.
Preferably, the slide blocks are arranged obliquely outwards of the grooves.
Preferably, the slide is moved by pushing with a first cylinder mounted on top of the upper die.
Preferably, the side surface of the top of the bulge is provided with a stop block, and all the stop blocks on the same row of bulges enclose an area for limiting the placement position of the embedded reinforcement.
Preferably, the upper die and the lower die are internally provided with circulating cooling water channels;
preferably, the surfaces of the upper die and the lower die are provided with a plurality of air suction holes.
Preferably, the upper and/or lower die is/are fitted with air needles which extend into between the upper and lower die surfaces.
Preferably, the air needle is pushed to act by a second air cylinder.
The application method of the integrated forming die is characterized by comprising the following steps:
s1, respectively covering two heated plastic sheets extruded from an extruder on the surfaces of an upper die and a lower die;
s2, air is pumped between the upper die and the lower die and the plastic sheets on the upper die and the lower die respectively to form vacuum, so that the two plastic sheets are attached to the upper die and the lower die respectively;
s3, placing the reinforcing piece on the top of the same row of bulges in the lower die;
s4, the upper die and the lower die are clamped, wherein the bulge and the reinforcing piece enter the groove of the upper die together, and the peripheries of the two plastic sheets are required to be tightly attached after the clamping;
s5, sliding the sliding blocks into the grooves to eject out the plastic sheet covered on the sliding grooves, wherein part of the plastic sheet is clamped between the end parts of the two sliding blocks, and the sliding blocks are wrapped after the plastic sheet is plastically deformed, so that holes between two pin piers in the same row and redundant plastic sheets in the holes, which are formed by clamping between the end parts of the two sliding blocks, are formed;
s6, introducing gas between the two plastic sheets to expand the two plastic sheets to be tightly adhered to the surfaces of the upper die, the lower die and the sliding block;
s5, cooling and molding;
s6, returning and demolding the sliding block, and taking out the molded plastic tray;
s7, scraping off redundant plastic sheets positioned in the holes on the plastic tray to obtain a finished product.
After the scheme is adopted, the key point of the invention is that the embedded reinforcement is enabled to enter the groove by means of the sliding block which can slide into and slide out of the groove, the sliding block is retracted into the groove when the die is assembled, the embedded reinforcement is enabled to enter the groove to give a space for giving way, and the sliding block enters the groove after the embedded reinforcement enters, so that a hole between two foot piers is formed.
Drawings
FIG. 1 is a plastic tray to be manufactured by the integral molding die of the embodiment;
fig. 2 is a schematic structural view of the present embodiment;
FIG. 3 is an exploded view of the present embodiment (with the product);
fig. 4 is an exploded view of the second embodiment.
Description of the reference numerals
Support panel 10, footer 20, base 30, stiffener 40;
the upper die 1, the groove 11, the chute 12, the sliding block 13, the first cylinder 14 and the second cylinder 15;
lower die 2, protrusion 21, stop 22, and limiting area 23.
Detailed Description
In order to further explain the technical scheme of the present invention, the present invention will be described in detail by the following specific examples, and the "first" and "second" described herein do not refer to the sequential meaning, but rather differ in similar structures.
As shown in fig. 2 to 4, an integrated mold for manufacturing a plastic pallet with a base 30 according to a preferred embodiment of the present invention, in which a pre-embedded reinforcement is built into the base 30, includes an upper mold 1 and a lower mold 2.
The lower die 2 has at least two rows of projections 21 for forming the footrests. Preferably, the side surface of the top of the protrusion 21 is formed with a stop 22, and all the stop 22 on the same row of protrusions 21 enclose a limiting area 23 for limiting the placement position of the embedded reinforcement.
The upper die 1 is provided with at least two grooves 11, each groove 11 is used for accommodating the same row of bulges 21 when the die is closed, and for a common Chinese-character-Chuan-shaped plastic tray, the number of the grooves 11 is three, and the bulges 21 are three rows.
Two opposite sliding grooves 12 are formed in the positions between two adjacent protrusions 21 in the same row during die assembly, sliding blocks 13 capable of sliding in and out of the grooves 11 are arranged in the two sliding grooves 12, and the end parts of the two sliding blocks 13 are in tight butt joint when sliding in the grooves 11. Wherein preferably the slide 13 is arranged inclined outwards towards the recess 11 to facilitate demolding, the slide 13 is then moved by pushing by a first cylinder 14, the first cylinder 14 being arranged inclined at the top of the upper die 1.
As for the plastic molding die, there are two types of plastic suction and blow molding, and for this reason, the present embodiment uses a combination of plastic suction and blow molding to attach the plastic sheet to the upper die 1 and the lower die 2.
In this embodiment, a plurality of air suction holes (not shown in a common structural diagram) are formed on the surfaces of the upper die 1 and the lower die 2, and vacuum is formed between the upper die 1 and the lower die 2 and the plastic sheets on the upper die and the lower die respectively by means of the air suction holes, so that the heated plastic sheets are adsorbed on the surfaces of the upper die 1 and the lower die 2.
Since the slider 13 is an operating member, it is difficult to attach the plastic sheet tightly by suction molding, and thus in this embodiment, an air needle (not shown in a common structural diagram) which can extend between the surface of the upper die 1 and the surface of the lower die 2 is mounted on the upper die 1 and/or the lower die 2, preferably only on the upper die 1, and the air needle is pushed by the second cylinder 15 to operate. After the upper die 1 and the lower die 2 are clamped, the two plastic sheets on the upper die 1 and the lower die 2 extend into the space between the two plastic sheets by means of air needles, and then air is introduced, so that the two plastic sheets are expanded and tightly adsorbed on the surfaces of the upper die 1, the lower die 2 and the sliding block 13, and the molding is completed.
Preferably, the upper die 1 and the lower die 2 are provided with circulating cooling water channels (not shown in a common structural diagram), and cooling water is introduced to cool the upper die 1 and the lower die 2, thereby cooling the plastic sheet.
The use method of the integrated forming die comprises the following steps:
s1, two plastic sheets extruded from an extruder and heated are respectively covered on the surfaces of an upper die 1 and a lower die 2.
S2, air is pumped between the upper die 1 and the lower die 2 and the plastic sheets on the upper die 1 and the lower die 2 respectively to form vacuum, so that the two plastic sheets are respectively attached to the upper die 1 and the lower die 2.
S3, the reinforcement is placed in the lower die 2 in the restriction area 23 formed at the top of the same row of projections 21.
S4, the upper die 1 and the lower die 2 are clamped, wherein the protrusions 21 and the reinforcing pieces enter the grooves 11 of the upper die 1 together, and the peripheries of the two plastic sheets are required to be tightly attached after the clamping.
S5, sliding the sliding blocks 13 into the grooves 11 to eject out the plastic sheet covered on the sliding grooves 12, wherein part of the plastic sheet is clamped between the end parts of the two sliding blocks 13, and part of the plastic sheet is wrapped around the sliding blocks 13 after plastic deformation, so that holes between two piers in the same row and redundant plastic sheets in the holes due to clamping between the end parts of the two sliding blocks 13 are formed.
S6, an air needle is inserted between the two plastic sheets, and air is introduced between the two plastic sheets, so that the two plastic sheets are inflated and tightly attached to the surfaces of the upper die 1, the lower die 2 and the sliding block 13.
S5, cooling and molding.
S6, returning and demolding the sliding block 13, and taking out the molded plastic tray.
S7, scraping off redundant plastic sheets positioned in the holes on the plastic tray to obtain a finished product.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All equivalent changes according to the design thought of the present invention fall into the protection scope of the present invention.

Claims (8)

1. The application method of the integrated forming die is used for manufacturing the integrated forming die with the base plastic tray, wherein the base is internally provided with the embedded reinforcement, and is characterized in that,
the integrated forming die comprises an upper die and a lower die; the lower die is provided with at least two rows of bulges for forming the foot piers; the upper die is provided with at least two grooves, and each groove is used for accommodating the same row of bulges when the die is closed; two opposite sliding grooves are formed in the positions, located between two adjacent bulges in the same row, of the groove during die assembly, sliding blocks capable of sliding in and out of the groove are installed in the two sliding grooves, and the end parts of the two sliding blocks are tightly butted when sliding in the groove to form holes between the adjacent foot piers;
and comprises the following steps:
s1, respectively covering two heated plastic sheets extruded from an extruder on the surfaces of an upper die and a lower die;
s2, air is pumped between the upper die and the lower die and the plastic sheets on the upper die and the lower die respectively to form vacuum, so that the two plastic sheets are attached to the upper die and the lower die respectively;
s3, placing the reinforcing piece on the top of the same row of bulges in the lower die;
s4, the upper die and the lower die are clamped, wherein the bulge and the reinforcing piece enter the groove of the upper die together, and the peripheries of the two plastic sheets are required to be tightly attached after the clamping;
s5, sliding the sliding blocks into the grooves to eject out the plastic sheet covered on the sliding grooves, wherein part of the plastic sheet is clamped between the end parts of the two sliding blocks, and the sliding blocks are wrapped after the plastic sheet is plastically deformed, so that holes between two pin piers in the same row and redundant plastic sheets in the holes, which are formed by clamping between the end parts of the two sliding blocks, are formed;
s6, introducing gas between the two plastic sheets to expand the two plastic sheets to be tightly adhered to the surfaces of the upper die, the lower die and the sliding block;
s5, cooling and molding;
s6, returning and demolding the sliding block, and taking out the molded plastic tray;
s7, scraping off redundant plastic sheets positioned in the holes on the plastic tray to obtain a finished product.
2. The method for using the integrated molding die as claimed in claim 1, wherein:
the sliding blocks are arranged obliquely outwards of the grooves.
3. The method for using the integrated molding die as claimed in claim 1, wherein:
the slide block is pushed to move by a first cylinder, and the first cylinder is arranged at the top of the upper die.
4. The method for using the integrated molding die as claimed in claim 1, wherein:
the side at the top of the bulge is provided with a stop block, and all the stop blocks on the same row of bulges enclose an area for limiting the placement position of the embedded reinforcement.
5. The method for using the integrated molding die as claimed in claim 1, wherein:
and circulating cooling water channels are arranged in the upper die and the lower die.
6. The method for using the integrated molding die as claimed in claim 1, wherein:
and a plurality of air suction holes are formed in the surfaces of the upper die and the lower die.
7. The method for using the integrated molding die as claimed in claim 1, wherein:
the upper die and/or the lower die are/is provided with air needles which can extend between the surfaces of the upper die and the lower die.
8. The method for using the integrated molding die as set forth in claim 7, wherein:
the air needle is pushed by the second air cylinder to act.
CN201710442580.3A 2017-06-13 2017-06-13 Integrated forming die for manufacturing plastic tray with base and using method thereof Active CN107116778B (en)

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CN201710442580.3A CN107116778B (en) 2017-06-13 2017-06-13 Integrated forming die for manufacturing plastic tray with base and using method thereof

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Application Number Priority Date Filing Date Title
CN201710442580.3A CN107116778B (en) 2017-06-13 2017-06-13 Integrated forming die for manufacturing plastic tray with base and using method thereof

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CN107116778B true CN107116778B (en) 2023-06-13

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Publication number Priority date Publication date Assignee Title
CN112026148B (en) * 2020-08-19 2022-08-09 上海闽兴包装材料有限公司 Plastic tray production equipment and process for processing plastic tray

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KR100650155B1 (en) * 2003-12-19 2006-11-27 조자연 Method for manufacturing PET bottle with handle by injection blow molding and PET bottle manufactured by it
CN202358420U (en) * 2011-11-17 2012-08-01 浙江荣新工贸有限公司 Flat plate type plastic tray shaped like Chinese character 'chuan'
CN102975372B (en) * 2012-11-30 2016-02-03 吴祖强 The production technology and equipments of one-shot forming plastic pallet
CN207077754U (en) * 2017-06-13 2018-03-09 厦门翔达川实业有限公司 For making the integrated mould with base plastic pallet

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