CN110884091B - Continuous heating type hot forming device - Google Patents
Continuous heating type hot forming device Download PDFInfo
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- CN110884091B CN110884091B CN201811050298.1A CN201811050298A CN110884091B CN 110884091 B CN110884091 B CN 110884091B CN 201811050298 A CN201811050298 A CN 201811050298A CN 110884091 B CN110884091 B CN 110884091B
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- heat treatment
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- heating
- clamping
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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
- B29C51/18—Thermoforming apparatus
-
- 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
- B29C51/42—Heating or cooling
- B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
Abstract
A continuous heating type hot forming device is suitable for raw materials, and comprises two feeding units, a heating unit, a heat treatment unit and a circulating forming unit, wherein the feeding units are arranged at intervals and used for clamping the raw materials and can be driven to drive the raw materials to move, each feeding unit is provided with two clamping groups which are arranged at intervals up and down, the clamping groups of the feeding units jointly define a clamping space, the heating unit comprises a plurality of heating groups used for heating the raw materials, the heat treatment unit comprises a plurality of temperature control groups of which the temperatures can be controlled respectively for carrying out heat treatment on the raw materials, the circulating forming unit is arranged on one side of the clamping space, which is opposite to the heat treatment unit, and used for carrying out plastic suction forming on the raw materials, and the temperature drop of the raw materials is avoided by the adjacent heating units and the heat treatment units, thereby achieving the effects of shortening the process time and increasing the yield.
Description
Technical Field
The present invention relates to a thermoforming apparatus, and more particularly to a continuous heating thermoforming apparatus.
Background
Referring to fig. 1, a conventional thermoforming apparatus, adapted to a plurality of sheet-shaped raw materials 6 spaced apart along a forward direction a and moving along the forward direction a, includes a heating unit 11 disposed above the raw materials 6, a heat treatment unit 12 spaced apart from the heating unit 11 along the forward direction a and located in front of the heating unit 11 and above the raw materials 6, and a mold unit 13 disposed on a side of the heat treatment unit 12 opposite to the heating unit 11 along the forward direction a and located above the raw materials 6 and configured to perform blister forming on the raw materials 6, wherein in operation, each raw material 6 moves to a position below the heating unit 11 and is heated to a softening temperature by the heating unit 11, and then moves to a position below the heat treatment unit 12 and is subjected to a heat treatment programming by the heat treatment unit 12, the heat treatment programming requires that the raw material 6 is heated first to enable the raw material 6 to reach a heat treatment temperature higher than the softening temperature, and then the raw material 6 is subjected to plastic suction molding by the mold unit.
However, the raw material 6 is not heated by the heating unit 11 and the heat treatment unit 12 during the process of moving from the lower portion of the heating unit 11 to the heat treatment unit 12, so that heat is inevitably dissipated, the temperature of the raw material 6 is lower than the softening temperature, and the heat treatment unit 12 takes extra time and energy to raise the temperature of the raw material 6 again, which results in a problem of prolonged process time and reduced yield.
Disclosure of Invention
The object of the present invention is to provide a continuous heating type thermoforming apparatus which overcomes at least the drawbacks of the background art.
The invention relates to a continuous heating type thermoforming device, which is suitable for sheet-shaped raw materials capable of being driven to move, and is characterized in that: the continuous heating type hot forming device comprises two feeding units, a heating unit, a heat treatment unit and a circulating forming unit.
The feeding units are arranged at intervals along the left-right direction and used for clamping the raw materials and can be driven to drive the raw materials to move along the advancing direction vertical to the left-right direction, each feeding unit is provided with two clamping groups arranged at intervals along the up-down direction vertical to the advancing direction and the left-right direction, and the clamping groups of the feeding units define a clamping space together.
The heating unit comprises a heating base which is arranged on one side of the material clamping space along the vertical direction, and a plurality of heating groups which are arranged on the heating base and used for heating the raw materials.
The heat treatment unit comprises a heat treatment base which is arranged in front of the heating base along the advancing direction and is adjacent to the heating base, and a plurality of temperature control groups which are arranged on the heat treatment base and the temperature of which can be controlled respectively so as to carry out heat treatment on the raw materials.
The circulating forming unit is arranged on one side of the material clamping space opposite to the heat treatment unit along the up-down direction and is used for carrying out plastic suction forming on the raw materials.
In the continuous heating type thermoforming device, the heat treatment unit comprises three temperature control groups, and the heat treatment base is provided with three accommodating areas which are sequentially arranged along the advancing direction and are respectively used for the temperature control groups to be arranged.
In the continuous heating type thermoforming apparatus of the present invention, the heating unit and the heat treatment unit may be driven to move in the vertical direction with respect to the material holding space.
The continuous heating type hot forming device comprises a circular forming unit, a plurality of plastic suction grooves and a plurality of forming units, wherein the circular forming unit comprises two driving wheel sets which are arranged at intervals along the left-right direction, and a forming belt which is sleeved on the driving wheel sets in a circular moving mode and driven by the driving wheel sets to enable one side of an adjacent material clamping space to move along the advancing direction, each driving wheel set is provided with two driving wheels which are arranged at intervals along the advancing direction and driven to rotate, the forming belt is provided with an outer surface used for contacting the raw materials, and the plurality of plastic suction grooves are formed in the outer surface and used for sucking the raw materials through negative pressure to change the shapes of the raw materials during plastic suction forming.
In the continuous heating type thermoforming device, each clamping group is provided with two driving wheels which are arranged at intervals along the advancing direction and can be driven to rotate, and clamping belts which are sleeved on the driving wheels in a circulating movement manner and driven by the driving wheels to enable one side of the adjacent material clamping space to move along the advancing direction, and the clamping belts of the feeding unit define the material clamping space and are used for clamping the raw materials.
In the continuous heating type thermoforming apparatus of the present invention, the heating unit and the heat treatment unit are located above the material holding space in the vertical direction, and the circulation molding unit is located below the material holding space in the vertical direction.
The invention has the beneficial effects that: the raw material is heated by the heating unit and then is subjected to heat treatment by the heat treatment unit through the adjacent heating unit and the heat treatment unit, and the effects of shortening the processing time and improving the yield are achieved because the temperature of the raw material is prevented from being reduced between the heating unit and the heat treatment unit.
Drawings
Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which:
FIG. 1 is a schematic side view of a prior art thermoforming apparatus;
FIG. 2 is a schematic side view of one embodiment of the continuous heating thermoforming apparatus of the present invention;
FIG. 3 is a schematic top view of the embodiment;
FIG. 4 is a schematic side view of the example and a feedstock;
FIG. 5 is a schematic cross-sectional view taken along line V-V in FIG. 3;
FIG. 6 is a schematic cross-sectional view taken along line VI-VI in FIG. 3;
FIG. 7 is a schematic sectional view taken along line VII-VII in FIG. 3; and
FIG. 8 is a schematic top view of the example and the feedstock.
Detailed Description
Referring to fig. 2, 3 and 4, an embodiment of the continuous heating type thermoforming apparatus of the present invention is applied to a raw material 7 which is in a sheet-roll shape and can be driven to move, and the continuous heating type thermoforming apparatus comprises two feeding units 2, a heating unit 3, a heat treatment unit 4, and an endless forming unit 5.
The feeding units 2 are arranged at intervals along a left-right direction Y, are used for clamping the raw material 7 and can be driven to drive the raw material 7 to move along an advancing direction X which is vertical to the left-right direction Y, each feeding unit 2 is provided with two clamping groups 21 which are arranged at intervals along an up-down direction Z which is vertical to the advancing direction X and the left-right direction Y, the clamping groups 21 of the feeding unit 2 together define a material clamping space 211, each clamping group 21 has two driving wheels 212 that are spaced along the advancing direction X and can be driven to rotate, and a clamping belt 213 that is circularly movably sleeved on the driving wheels 212 and is driven by the driving wheels 212 to enable one side of the adjacent material clamping space 211 to move along the advancing direction X, the holding belt 213 of the feeding unit 2 defines the material holding space 211 and is used to hold the raw material 7.
The heating unit 3 includes a heating base 31 located above the material clamping space 211 along the up-down direction Z, and two warming groups 32 disposed at intervals on the heating base 31 along the forward direction X and used for warming the raw material 7. It should be noted that the warming group 32 can be an electric heating tube and also can be a near infrared light tube, and the warming group 32 can also be a combination of an electric heating tube and a near infrared light tube, but is not limited thereto. In other embodiments, the number of temperature raising sets can be adjusted as desired.
Referring to fig. 3, 4 and 5, the heat treatment unit 4 includes a heat treatment base 41 disposed in front of the heating base 31 along the forward direction X and adjacent to the heating base 31 and above the material clamping space 211 along the up-down direction Z, and three temperature control sets 42 disposed on the heat treatment base 41 and capable of controlling the temperatures respectively for performing heat treatment on the raw material 7, it should be noted that the temperature control sets 42 can be electric heating tubes or near infrared light tubes, and the temperature control sets 42 can also be a combination of electric heating tubes and near infrared light tubes, but not limited thereto. The heat treatment pedestal 41 has three accommodating areas 411 sequentially arranged along the forward direction X and respectively provided for the temperature control unit 42. The heating unit 3 and the heat treatment unit 4 are driven to move in the vertical direction Z with respect to the material holding space 211.
Referring to fig. 3, 4 and 6, the circulation molding unit 5 is disposed below the material clamping space 211 along the vertical direction Z, is used for performing plastic suction molding on the raw material 7, and corresponds to the lower portion of the heat treatment unit 4. The circulation forming unit 5 includes two driving wheel sets 51 disposed at an interval along the left-right direction Y, and a forming belt 52 that is sleeved on the driving wheel set 51 in a circulation moving manner and driven by the driving wheel set 51 to move one side of the adjacent material clamping space 211 along the forward direction X.
Referring to fig. 4, 6 and 7, each driving wheel set 51 has two driving wheels 511 spaced along the advancing direction X and driven to rotate, the forming belt 52 has an outer surface 521 for contacting the raw material 7, and a plurality of suction grooves 522 formed on the outer surface 521 and arranged in an array for sucking the raw material 7 by negative pressure during the suction forming to change the shape of the raw material 7.
Referring to fig. 4, 7 and 8, in operation, the feeding unit 2 clamps the raw material 7 in the material clamping space 211 and drives the corresponding clamping belt 213 through the driving wheel 212 to move the raw material along the advancing direction X, and as an example, a section of the raw material 7 to be processed is first heated and softened by the heating unit 3 while moving below the heating unit 3, so as to perform subsequent blister forming, and then the section moves below the heat treatment unit 4 and above one of the blister slots 522 of the circular forming unit 5, and is simultaneously heat-treated by the heat treatment unit 4 and blister-formed by the circular forming unit 5 during the movement between the heat treatment unit 4 and the circular forming unit 5 along the advancing direction X, the section then exits below the heat treatment unit 4 and is separated from the forming belt 52.
Referring to fig. 2, 3 and 4, it is to be noted that in the present embodiment, the temperature of the temperature control unit 42 can be respectively controlled to enable the temperature control unit 42 to be switched among a continuous heating mode, a high temperature maintaining mode and an enhanced cooling mode, the continuous heating mode can enable the raw material 7 located below the heat treatment unit 4 to be continuously heated, the high temperature maintaining mode can enable the raw material 7 located below the heat treatment unit 4 to be maintained at a set temperature, the enhanced cooling mode can enable the temperature of the raw material 7 located below the heat treatment unit 4 to be reduced before the raw material 7 is separated from the heat treatment unit 4, and in other implementation manners, the temperature of the temperature control unit 42 can be changed as required to perform different heat treatments. For crystalline materials, in order to obtain higher tensile strength or deformation strength of the product, the heating is continued in the heat treatment unit 4 corresponding to the molded segment, and the segment is maintained above the crystallization temperature of the raw material 7, so that the property of the segment for recrystallization is changed, and the effects of shortening the process time and improving the yield are achieved because the temperature of the raw material 7 is prevented from being reduced in the heat treatment process.
In addition, since the heating unit 3 and the heat treatment unit 4 can be driven to move relative to the material clamping space 211 along the vertical direction Z, the heating and heat treatment effects can be adjusted by controlling the distance between the heating unit 3 and the heat treatment unit 4 and the raw material 7 in the vertical direction Z, for example, by separating the heating unit 3 and the heat treatment unit 4 from the raw material 7, so as to prevent the raw material 7 from being softened and stuck on the circular forming unit 5 due to overheating.
Accordingly, compared to the conventional thermoforming apparatus in which the heating unit 3 and the heat treatment unit 4 are disposed at a distance from each other, the present invention can prevent a temperature drop between the heating unit 3 and the heat treatment unit 4 of the raw material 7 by using the adjacent heating unit 3 and the adjacent heat treatment unit 4 to subject the raw material 7 to the heat treatment by the heat treatment unit 4 immediately after being heated by the heating unit 3.
In summary, in the continuous heating type thermoforming apparatus of the present invention, the heating unit 3 and the heat treatment unit 4 are adjacent to each other, so that the raw material 7 is heated by the heating unit 3 and then is heat-treated by the heat treatment unit 4, and the temperature of the raw material 7 is prevented from decreasing between the heating unit 3 and the heat treatment unit 4, thereby achieving the effects of shortening the process time and increasing the yield, and thus the object of the present invention can be achieved.
Claims (6)
1. The utility model provides a continuous heating formula thermoforming device, is applicable to and is the slice and can be driven and the raw materials that remove, its characterized in that: the continuous heating type hot forming device comprises two feeding units, a heating unit, a heat treatment unit and a circulating forming unit, wherein the feeding units are arranged at intervals along the left-right direction and used for clamping the raw materials and can be driven to drive the raw materials to move along the advancing direction vertical to the left-right direction, each feeding unit is provided with two clamping groups arranged at intervals along the up-down direction vertical to the advancing direction and the left-right direction, the clamping groups of the feeding units jointly define a clamping space, the heating unit comprises a heating base arranged on one side of the clamping space along the up-down direction and a plurality of heating groups arranged on the heating base and used for heating the raw materials, the heat treatment unit comprises a heat treatment base arranged in front of the heating base along the advancing direction and adjacent to the heating base, and a plurality of temperature control sets which are arranged on the heat treatment base and the temperature of which can be respectively controlled so as to carry out heat treatment on the raw materials, and the device is characterized in that: the circulation forming unit is arranged on one side of the material clamping space opposite to the heat treatment unit in the vertical direction and is used for carrying out plastic suction forming on the raw materials, the temperature control group can be changed among a continuous heating mode, a high-temperature heating mode and a reinforced cooling mode, the raw materials positioned below the heat treatment unit can be continuously heated in the continuous heating mode, the raw materials positioned below the heat treatment unit can be maintained at a set temperature after forming in the high-temperature heating mode, and the raw materials positioned below the heat treatment unit can be cooled before being separated from the heat treatment unit in the reinforced cooling mode.
2. The continuous heating type thermoforming apparatus according to claim 1, characterized in that: the heat treatment unit comprises three temperature control groups, and the heat treatment base is provided with three accommodating areas which are sequentially arranged along the advancing direction and are respectively used for the temperature control groups to be arranged.
3. The continuous heating type thermoforming apparatus as claimed in claim 2, characterized in that: the heating unit and the heat treatment unit can be driven to move relative to the material clamping space along the up-down direction.
4. A continuous heating type thermoforming apparatus as claimed in claim 3, characterized in that: the circulation shaping unit includes two edges drive the wheelset that left right direction interval set up, and can locate with the cover circulation drive the wheelset and receive drive the wheelset drive and make adjacent one side in double-layered material space is followed the shaping area that the advancing direction removed, each drives the wheelset and has two edges the advancing direction interval sets up and can driven and pivoted drive the wheel, the shaping area has and is used for contacting the surface of raw materials, and a plurality of be formed at the surface just is used for will through the negative pressure when the plastic uptake shaping the raw materials inhales in order to change the plastic uptake groove of raw materials shape.
5. The continuous heating type thermoforming apparatus according to claim 4, characterized in that: each clamping group is provided with two driving wheels which are arranged at intervals along the advancing direction and can be driven to rotate, and a clamping belt which is sleeved on the driving wheels in a circulating movement manner and is driven by the driving wheels to enable one side of the adjacent clamping space to move along the advancing direction, wherein the clamping belt of the feeding unit defines the clamping space and is used for clamping the raw materials.
6. The continuous heating type thermoforming apparatus according to claim 5, characterized in that: the heating unit and the heat treatment unit are located above the material clamping space along the vertical direction, and the circulating forming unit is located below the material clamping space along the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050298.1A CN110884091B (en) | 2018-09-10 | 2018-09-10 | Continuous heating type hot forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050298.1A CN110884091B (en) | 2018-09-10 | 2018-09-10 | Continuous heating type hot forming device |
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| Publication Number | Publication Date |
|---|---|
| CN110884091A CN110884091A (en) | 2020-03-17 |
| CN110884091B true CN110884091B (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811050298.1A Active CN110884091B (en) | 2018-09-10 | 2018-09-10 | Continuous heating type hot forming device |
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| Country | Link |
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| CN (1) | CN110884091B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113334740A (en) * | 2021-06-04 | 2021-09-03 | 福建华盛铭兔环保科技有限公司 | High-efficient thermoforming food storage box production line |
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| GB827845A (en) * | 1955-02-16 | 1960-02-10 | Paul Szego | Improvements in machines for vacuum-forming thermoplastic sheets |
| US3346686A (en) * | 1964-05-27 | 1967-10-10 | Grace W R & Co | Method of uniting foamed plastic sheets and thermoforming the same |
| JPH06190912A (en) * | 1992-12-25 | 1994-07-12 | Sekisui Plastics Co Ltd | Forming method for foamed polyethylene terephthalate sheet |
| DE4330111A1 (en) * | 1993-09-06 | 1995-03-09 | Kiefel Gmbh Paul | Process and apparatus for producing plastics mouldings |
| US5906840A (en) * | 1997-08-22 | 1999-05-25 | Bosler Designs Inc. | Apparatus for continuous vacuum forming |
| US6010323A (en) * | 1997-04-11 | 2000-01-04 | Masaki Ooba | Vacuum pressure forming apparatus and vacuum pressure forming method |
| CN102825778A (en) * | 2012-09-20 | 2012-12-19 | 福建省晋江市夜光达反光材料有限公司 | Microprism reflective membrane production device |
| CN206297132U (en) * | 2016-11-02 | 2017-07-04 | 广东阿特斯科技有限公司 | A kind of 3D diaphragms heat pressing forming device |
| CN206780993U (en) * | 2017-05-08 | 2017-12-22 | 天津纳努光电子有限公司 | A kind of heater of Packing Machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6319456B1 (en) * | 1998-11-12 | 2001-11-20 | Certainteed Corporation | Method for continuous vacuum forming shaped polymeric articles |
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2018
- 2018-09-10 CN CN201811050298.1A patent/CN110884091B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB827845A (en) * | 1955-02-16 | 1960-02-10 | Paul Szego | Improvements in machines for vacuum-forming thermoplastic sheets |
| US3346686A (en) * | 1964-05-27 | 1967-10-10 | Grace W R & Co | Method of uniting foamed plastic sheets and thermoforming the same |
| JPH06190912A (en) * | 1992-12-25 | 1994-07-12 | Sekisui Plastics Co Ltd | Forming method for foamed polyethylene terephthalate sheet |
| DE4330111A1 (en) * | 1993-09-06 | 1995-03-09 | Kiefel Gmbh Paul | Process and apparatus for producing plastics mouldings |
| US6010323A (en) * | 1997-04-11 | 2000-01-04 | Masaki Ooba | Vacuum pressure forming apparatus and vacuum pressure forming method |
| US5906840A (en) * | 1997-08-22 | 1999-05-25 | Bosler Designs Inc. | Apparatus for continuous vacuum forming |
| CN102825778A (en) * | 2012-09-20 | 2012-12-19 | 福建省晋江市夜光达反光材料有限公司 | Microprism reflective membrane production device |
| CN206297132U (en) * | 2016-11-02 | 2017-07-04 | 广东阿特斯科技有限公司 | A kind of 3D diaphragms heat pressing forming device |
| CN206780993U (en) * | 2017-05-08 | 2017-12-22 | 天津纳努光电子有限公司 | A kind of heater of Packing Machine |
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| CN110884091A (en) | 2020-03-17 |
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