CN114516157B - Composite sandwich plate hot-press forming cooling and shaping device - Google Patents
Composite sandwich plate hot-press forming cooling and shaping device Download PDFInfo
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- CN114516157B CN114516157B CN202011294583.5A CN202011294583A CN114516157B CN 114516157 B CN114516157 B CN 114516157B CN 202011294583 A CN202011294583 A CN 202011294583A CN 114516157 B CN114516157 B CN 114516157B
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- conveying unit
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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
- B29C51/42—Heating or cooling
- B29C51/428—Heating or cooling of moulds or mould parts
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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
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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
- B29C51/261—Handling means, e.g. transfer means, feeding means
- B29C51/262—Clamping means for the sheets, e.g. clamping frames
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
Abstract
The application discloses a composite sandwich plate hot press molding cooling shaping device, which comprises a first linear conveying unit and a second linear conveying unit which are sequentially arranged, wherein the conveying directions of the first linear conveying unit and the second linear conveying unit are intersected; a first hot-pressing forming die and a first cooling and shaping die are respectively arranged on two sides of the first linear conveying unit along the conveying direction; a second hot-pressing forming die and a second cooling and shaping die are respectively arranged on two sides of the second linear conveying unit along the conveying direction; the first linear conveying unit comprises a first clamping mechanism which can slide along the conveying direction of the first linear conveying unit, and the first clamping mechanism is positioned between the two first hot-pressing forming dies; the second linear conveying unit comprises a second clamping mechanism capable of sliding along the conveying direction of the second linear conveying unit, and the second clamping mechanism is located between the two second hot-pressing forming dies. This scheme can prevent that in current hot briquetting cooling design step, the work piece takes place the drunkenness, leads to the problem of work piece size uniformity reduction to take place.
Description
Technical Field
The invention relates to the technical field of composite sandwich board forming, in particular to a hot-press forming, cooling and shaping device for a composite sandwich board.
Background
Composite sandwich panels, such as honeycomb sandwich panels, are typically panels made by bonding upper and lower face sheets to each other on opposite sides of a honeycomb core. The composite material has the advantages of light weight, heat preservation, low price, high strength, recoverability and the like, and is widely applied to a plurality of fields of automobiles, buildings, transportation, logistics packaging, furniture manufacturing and the like.
In the forming process of the composite sandwich board, the composite sandwich board is generally heated and insulated firstly, so that a part of PP glue in the composite sandwich board is melted for hot-press forming, and then the composite sandwich board is cooled for a period of time under the condition of low temperature and pressure maintaining to be cooled and shaped. How to prevent the composite sandwich plate from moving and improve the consistency of products in the hot-press forming and cooling forming processes is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention provides a hot-press forming, cooling and shaping device for a composite sandwich board, which is used for preventing the composite sandwich board from moving in the hot-press forming and cooling and shaping processes and improving the consistency of products.
The invention provides a composite sandwich board hot-press forming cooling and shaping device, which comprises:
the conveying device comprises a first linear conveying unit and a second linear conveying unit which are sequentially arranged, wherein the conveying direction of the first linear conveying unit is intersected with that of the second linear conveying unit;
a first hot-press forming die and a first cooling and shaping die are respectively arranged on two sides of the first linear conveying unit along the conveying direction;
a second hot-pressing forming die and a second cooling and shaping die are respectively arranged on two sides of the second linear conveying unit along the conveying direction of the second linear conveying unit;
the first linear conveying unit comprises a first clamping mechanism which can slide along the conveying direction of the first linear conveying unit, and the first clamping mechanism is positioned between the two first hot-pressing forming dies;
the second linear conveying unit comprises a second clamping mechanism capable of sliding along the conveying direction of the second linear conveying unit, and the second clamping mechanism is located between the two second hot-press forming dies.
As an implementation manner, the method further comprises the following steps:
the third linear conveying unit and the fourth linear conveying unit are arranged in sequence, and the conveying direction of the third linear conveying unit is crossed with that of the fourth linear conveying unit;
a third hot-pressing forming die and a third cooling and shaping die are respectively arranged on two sides of the third linear conveying unit along the conveying direction of the third linear conveying unit;
a fourth hot-pressing forming die and a fourth cooling and shaping die are respectively arranged on two sides of the fourth linear conveying unit along the conveying direction of the fourth linear conveying unit;
the third linear conveying unit comprises a third clamping mechanism capable of sliding along the conveying direction of the third linear conveying unit, and the third clamping mechanism is positioned between the two third hot-press forming dies;
the fourth linear conveying unit comprises a fourth clamping mechanism capable of sliding along the conveying direction of the fourth linear conveying unit, and the fourth clamping mechanism is located between the two fourth hot-press forming dies.
As an implementation manner, the second linear conveying unit and the third linear conveying unit have the same conveying direction, and a plate turnover mechanism is arranged between the second linear conveying unit and the third linear conveying unit.
As an implementation manner, the plate turnover mechanism comprises a rotating shaft, the axis of the rotating shaft is perpendicular to the conveying direction of the second linear conveying unit, two supporting pieces are fixedly connected to the rotating shaft, the two supporting pieces extend to the same side of the rotating shaft, and the opposite sides of the two supporting pieces are respectively provided with a fifth clamping mechanism.
As an implementation manner, the fifth clamping mechanism comprises a clamping seat, an upper clamping jaw and a lower clamping jaw are arranged on the clamping seat, and at least one of the upper clamping jaw and the lower clamping jaw is in sliding fit with the clamping seat.
As an implementation manner, the workpiece transferring device further comprises at least two transferring support members, the transferring support members are respectively located at the conveying tail ends of the second linear conveying unit and the third linear conveying unit, a first rotary clamping linear driver is arranged at the edge of the transferring support member, and a chuck of the first rotary clamping linear driver is used for abutting against a workpiece to be transferred on the transferring support member.
As an implementation manner, the first hot-press forming die and the first cooling and shaping die are respectively adjustable in position along a conveying direction perpendicular to the first linear conveying unit;
the second hot-pressing forming die and the second cooling and shaping die are adjustable in position along the conveying direction perpendicular to the second linear conveying unit respectively;
the third hot pressing forming die and the third cooling and shaping die are adjustable in position along the conveying direction perpendicular to the third linear conveying unit respectively;
the fourth hot pressing forming die and the fourth cooling and shaping die are adjustable in position along the conveying direction perpendicular to the fourth linear conveying unit.
As an implementation manner, the first hot-press forming die, the second hot-press forming die, the third hot-press forming die, the fourth hot-press forming die, the first cooling and shaping die, the second cooling and shaping die, the third cooling and shaping die and the fourth cooling and shaping die each include an upper template and a lower template which are closed to each other, each lower template is connected with a die mounting seat, each die mounting seat is connected to the base in a sliding manner, each die mounting seat is fixedly connected with a first linear driver, and a moving part of each first linear driver is connected with the corresponding upper template.
As an implementation manner, the first linear conveying unit, the second linear conveying unit, the third linear conveying unit and the fourth linear conveying unit respectively include a first conveying mechanism, a second conveying mechanism and a third conveying mechanism which are arranged in a staggered manner in sequence, and the first conveying mechanism and the second conveying mechanism, and the second conveying mechanism and the third conveying mechanism at least partially overlap on a projection perpendicular to a conveying direction of the first conveying mechanism and the second conveying mechanism;
the first conveying mechanism, the second conveying mechanism and the third conveying mechanism are identical in structure and respectively comprise a sliding part which is arranged in a sliding mode along the conveying direction of the sliding part, second linear drivers are vertically arranged at two ends of the sliding part respectively, a moving part of each second linear driver is connected with a supporting part, a third linear driver is vertically arranged on the supporting part and is a second rotary clamping linear driver, a fixing part of the second rotary clamping linear driver is provided with a bearing surface, and the bearing surface is used for forming a clamping opening with a clamping head of the second rotary clamping linear driver.
As an implementation manner, the method further comprises the following steps:
a slide rail is arranged on the base plate,
the sliding piece is in sliding fit with the sliding rail;
the two ends of the sliding rail are respectively provided with a driving belt wheel and a driven belt wheel, a driving belt is wound between the driving belt wheel and the driven belt wheel and fixedly connected with the sliding part, and the driving belt wheel is connected with a driving motor.
As an implementation manner, the upper mold plates of the first hot press molding mold, the second hot press molding mold, the third hot press molding mold and the fourth hot press molding mold are provided with heaters or heating liquid flow passages.
As an implementation manner, at least the upper mold plate and/or the lower mold plate of the first cooling and shaping mold, the second cooling and shaping mold, the third cooling and shaping mold, and the fourth cooling and shaping mold are provided with cooling liquid flow passages.
According to the scheme provided by the application, the first clamping mechanism is positioned between the two first hot-pressing forming dies; the second clamping mechanism is positioned between the two second hot-press forming dies, and the conveying directions of the first linear conveying unit and the second linear conveying unit are crossed, so that workpieces (also called products or plates and the like) can be clamped alternately, and the problem that positioning accuracy is influenced due to glue overflow of the workpieces caused by hot pressing in the hot-press forming process is solved. The alternate clamping can be understood as that the edge of the hot press forming in the current process is the edge to be clamped in the next process, and the edge clamped in the current process is the edge to be hot press formed in the next process, for example, in the process of hot press forming, cooling and forming the workpiece, the first clamping mechanism clamps and fixes the edge of the workpiece which is not required to be processed in the current hot press forming, cooling and forming step, and the second clamping mechanism clamps and fixes the edge of the workpiece which is hot press forming, cooling and forming step, but does not clamp and fix the edge of the workpiece which is processed in the current hot press forming, cooling and forming step, so that the problem that in the current hot press forming, cooling and forming step, if the edge of the hot press forming is clamped, the clamped workpiece is not firmly moved due to glue overflow in the hot press forming process, and the size consistency of the workpiece is reduced can be avoided.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a top view of a composite sandwich panel hot press forming cooling and shaping device according to an embodiment of the present invention;
fig. 2 is a perspective view of a first part of a composite sandwich panel hot press forming cooling and shaping device according to an embodiment of the present invention;
FIG. 3 is a perspective view of the intersection of the first linear transporter unit and the second linear transporter unit;
FIG. 4 is a front view of the first section above with the workpiece transferred between the cope and drag platens;
FIG. 5 is a front view of the clamping mechanism of FIG. 4 after releasing the workpiece;
FIG. 6 is a perspective view showing only one of the hot press molding dies or the cooling setting die;
FIG. 7 is a perspective view of the plate turnover mechanism;
FIG. 8 is a perspective view of the fifth clamping mechanism of FIG. 7;
FIG. 9 is a perspective view of the transport mechanism;
FIG. 10 is a perspective view of the clamping mechanism in a released state;
FIG. 11 is a perspective view of the clamping mechanism in a clamped state;
fig. 12 is a G-G sectional view of the upper mold plate.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 6, a hot press forming, cooling and shaping device for a composite sandwich panel provided in an embodiment of the present invention includes:
the device comprises a first linear conveying unit and a second linear conveying unit which are sequentially arranged, wherein the conveying direction of the first linear conveying unit is crossed with that of the second linear conveying unit; the sequential arrangement refers to two conveying units, wherein one conveying unit can convey materials to the other conveying unit, that is, the input end of one conveying unit and the input end of the other conveying unit are shared in spatial position, for example, a first linear conveying unit conveys a plate to be processed (workpiece 100) to the output end of the first linear conveying unit, the output end of the first linear conveying unit is the input end of a second linear conveying unit, and then the second linear conveying unit conveys the plate to be processed continuously along the conveying direction of the second linear conveying unit. Because the conveying directions of the first linear conveying unit and the second linear conveying unit are intersected, that is, the conveying directions of the first linear conveying unit and the second linear conveying unit are not parallel to each other, the intersection angle of the first linear conveying unit and the second linear conveying unit can be determined according to the shape of the plate to be processed, for example, the included angle of the plate to be processed is 90 degrees if the plate to be processed is a rectangle, the included angle of the plate to be processed is equal to the acute angle or the obtuse angle of the parallelogram if the plate to be processed is a parallelogram, and the included angle of the plate to be processed is determined according to the actual situation if the plate to be processed is another parallelogram.
A first hot-pressing forming die 1 and a first cooling and shaping die 2 are respectively arranged on two sides of the first linear conveying unit along the conveying direction; the first hot-press forming die 1 and the first cooling and shaping die 2 sequentially perform hot-press forming and cooling and shaping on two sides of the workpiece 100 parallel to the conveying direction of the first linear conveying unit.
A second hot-press forming die 3 and a second cooling and shaping die 4 are respectively arranged on two sides of the second linear conveying unit along the conveying direction; the second hot press forming die 3 and the second cooling and shaping die 4 sequentially perform hot press forming and cooling and shaping on two sides of the workpiece 100 parallel to the conveying direction of the second linear conveying unit.
The first linear conveying unit comprises a first clamping mechanism 37 which can slide along the conveying direction of the first linear conveying unit, and the first clamping mechanism 37 is positioned between the two first hot-pressing forming dies 1; because the first clamping mechanism 37 is located between the two first hot press forming molds 1, the first clamping mechanism 37 can clamp two sides of the workpiece 100 different from the conveying direction of the first linear conveying unit, so as to transfer at least the workpiece 100 from the first hot press forming mold 1 to the first cooling and shaping mold 2 for hot press forming and cooling and shaping. For example, when the workpiece 100 has a rectangular shape, if the first hot press forming die 1 and the first cooling and setting die 2 perform hot press forming and cooling and setting on the long sides of the rectangular shape, the first clamping mechanism 37 clamps the short sides of the rectangular shape.
The second linear conveying unit comprises a second clamping mechanism which can slide along the conveying direction of the second linear conveying unit, and the second clamping mechanism is positioned between the two second hot-pressing forming dies 3. Because the second clamping mechanism is located between the two second hot press forming dies 3, the second clamping mechanism can clamp two sides of the workpiece 100 different from the conveying direction of the second linear conveying unit, so that at least the workpiece 100 is transferred from the second hot press forming die 3 to the second cooling and shaping die 4 for hot press forming and cooling and shaping. For example, when the workpiece 100 is rectangular, if the second hot press forming die 3 and the second cooling and setting die 4 are used to hot press form and cool and set the short sides of the rectangle, the second clamping mechanism is used to clamp the long sides of the rectangle.
In the above scheme provided by the present application, the first clamping mechanism 37 is located between the two first hot press forming molds 1; the second clamping mechanism is positioned between the two second hot-press forming dies 3, and the conveying directions of the first linear conveying unit and the second linear conveying unit are crossed, so that the workpiece 100 (also called as a product or a plate and the like) can be clamped alternately, and the problem that positioning accuracy is influenced by glue overflow of the workpiece caused by hot pressing in the hot-press forming process is solved. The alternate clamping is understood to mean that the edge of the hot press forming in the current process is the edge to be clamped in the next process, and the edge clamped in the current process is the edge to be hot press formed in the next process, for example, in the process of carrying out hot press forming, cooling and shaping on the workpiece 100, the first clamping mechanism 37 clamps and fixes the edge of the workpiece 100 which does not need to be processed in the current hot press forming, cooling and shaping step, and the second clamping mechanism clamps and fixes the edge of the workpiece which has been hot press forming, cooling and shaping in the previous process, but does not clamp and fix the edge of the workpiece which is processed in the current hot press forming, cooling and shaping step.
As an implementation manner, in order to implement continuous hot press molding and cooling setting on the front and back sides of the workpiece 100, the method further includes:
the third linear conveying unit and the fourth linear conveying unit are arranged in sequence, and the conveying direction of the third linear conveying unit is crossed with that of the fourth linear conveying unit;
a third hot-pressing forming die 5 and a third cooling and shaping die 6 are respectively arranged on two sides of the third linear conveying unit along the conveying direction;
a fourth hot-press forming die 7 and a fourth cooling and shaping die 8 are respectively arranged on two sides of the fourth linear conveying unit along the conveying direction;
the third linear conveying unit comprises a third clamping mechanism which can slide along the conveying direction of the third linear conveying unit, and the third clamping mechanism is positioned between the two third hot-pressing forming dies 5;
the fourth linear conveying unit comprises a fourth clamping mechanism which can slide along the conveying direction of the fourth linear conveying unit, and the fourth clamping mechanism is positioned between the two fourth hot-pressing forming dies 7.
For example, after each side of the front surface of the workpiece 100 is sequentially hot-pressed and cooled by the first hot-pressing mold 1, the first cooling and shaping mold 2, the second hot-pressing mold 3, and the second cooling and shaping mold 4, the workpiece is turned over and placed at the input end of the third linear conveying unit, and then each side of the back surface of the workpiece 100 is sequentially hot-pressed and cooled by the third hot-pressing mold 5, the third cooling and shaping mold 6, the fourth hot-pressing mold 7, and the fourth cooling and shaping mold 8 under the driving of the third linear conveying unit and the fourth linear conveying unit.
As an implementation manner, referring to fig. 7 and 8, in order to realize automatic continuous production, the second linear conveying unit and the third linear conveying unit have the same conveying direction, and a plate turnover mechanism is arranged between the second linear conveying unit and the third linear conveying unit. One surface (such as the front surface) of the workpiece 100 is subjected to hot press forming and cooling setting, and then is transmitted to the output end of the second linear conveying unit, the plate turnover mechanism at the output end turns over the workpiece 100 by 180 degrees, so that the other surface (the back surface) of the workpiece faces upwards and is turned over to the input end of the third linear conveying unit, and the third clamping mechanism of the third linear conveying unit starts to clamp the workpiece 100 for transmission among subsequent stations.
As an implementation manner, the plate turnover mechanism includes a rotating shaft 34, an axis of the rotating shaft 34 is perpendicular to a conveying direction of the second linear conveying unit, two supporting members 30 are fixedly connected to the rotating shaft 34, the two supporting members 30 are fixedly connected to the rotating shaft 34 through a cross bar 39, for example, the two supporting members 30 extend to the same side of the rotating shaft 34, and the opposite sides of the two supporting members 30 are respectively provided with a fifth clamping mechanism 31. The workpiece 100 can be turned over by driving the rotating shaft to rotate through the speed reducing motor, and the rotating shaft 34 can also be driven to rotate by driving the speed reducing gear 32 group installed at the end part of the rotating shaft through the motor, so as to turn over the workpiece 100. In order to prevent the workpiece from sagging due to gravity, a support bar 33 may be further provided between the two support members 30, and the support bar may be fixedly connected to the cross bar 39.
As an implementation manner, the fifth clamping mechanism 31 includes a clamping seat, an upper clamping jaw 36 and a lower clamping jaw 35 are arranged on the clamping seat, and at least one of the upper clamping jaw 36 and the lower clamping jaw 35 is in sliding fit with the clamping seat. After the front surface of the workpiece 100 is subjected to hot press forming and cooling setting, the second linear conveying unit conveys the workpiece 100 to the output end of the second linear conveying unit, at this time, the fifth clamping mechanisms 31 are positioned at two sides of the output end of the second linear conveying unit, and two sides of the workpiece 100 are positioned between the upper clamping jaw 36 and the lower clamping jaw 35, the workpiece 100 is clamped through the vertical movement of the upper clamping jaw 36 and the lower clamping jaw 35, and after the second clamping mechanism of the second linear conveying unit releases the workpiece 100, the motor drives the rotating shaft to rotate, so that the workpiece 100 is turned over from the output end of the second linear conveying unit to the input end of the third linear conveying unit.
As a practical matter, in order to ensure the consistency of processing, the composite sandwich plate hot press forming cooling and shaping device further includes at least two transferring supports, for example, but not limited to, a frame structure, so that the workpiece 100 does not move when the direction in which the workpiece 100 is driven changes. The transfer support is respectively located at the conveying tail ends of the second linear conveying unit and the third linear conveying unit, a first rotary clamping linear driver 29 is arranged at the edge of the transfer support, and a chuck 28 of the first rotary clamping linear driver 29 is used for pressing the workpiece 100 to be transferred onto the transfer support. After the workpiece 100 is conveyed to the conveying ends of the second linear conveying unit and the third linear conveying unit, the workpiece 100 is supported on the transfer support, the chuck 28 of the first rotary clamping linear driver 29 presses against the transfer support, then the second clamping mechanism of the second linear conveying unit releases the workpiece 100, the workpiece 100 is clamped by the third clamping mechanism of the third linear conveying unit, and the workpiece 100 is clamped and fixed all the time in the whole process, so that the workpiece 100 does not move, and the processing consistency of the workpiece 100 can be ensured. The rotary clamping linear actuator referred to herein may be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod, etc., which is capable of rotating the piston rod relative to the piston cylinder when extended to a maximum position.
As an implementation manner, in order to improve the applicability of the hot press forming, cooling and shaping device for composite sandwich plates to process workpieces 100 of different models or sizes, the positions of the first hot press forming mold 1 and the first cooling and shaping mold 2 are adjustable along the conveying direction perpendicular to the first linear conveying unit, respectively;
the second hot-press forming die 3 and the second cooling and shaping die 4 are adjustable in position along the conveying direction vertical to the second linear conveying unit respectively;
the third hot-pressing forming die 5 and the third cooling and shaping die 6 are adjustable in position along the conveying direction perpendicular to the third linear conveying unit respectively;
the fourth hot-press forming die 7 and the fourth cooling and shaping die 8 are adjustable in position along a direction perpendicular to the fourth linear conveying unit.
As an implementation manner, the first hot press forming die 1, the second hot press forming die 3, the third hot press forming die 5, the fourth hot press forming die 7, the first cooling and shaping die 2, the second cooling and shaping die 4, the third cooling and shaping die 6, and the fourth cooling and shaping die 8 respectively correspond to and include upper die plates 16, 216 and lower die plates 17, 217 which are closed to each other, a cavity structure of each of the upper die plates 16, 216 and the lower die plates 17, 217 may be determined according to actual needs, structures of each of the upper die plates 16, 216 and the lower die plates 17, 217 connected to other external components may be the same, for example, the first hot press forming die 1 is taken as an example (at least, refer to fig. 1 and 4), the lower die plate 17 of the first hot press forming die 1 is connected with a die mounting seat 13, the die mounting seat 13 is slidably connected to the base 12, the base 12 is, for example, but not limited to a welded frame structure, the die mounting seat 13 may be driven to slide by the lead screw mechanism 14, for example, a hand wheel 21 connected to a lead screw is rotated to change a position of the corresponding die mounting seat, and a linear driver 15 is connected to the upper die mounting seat 15, and a linear driver 15 is connected to the first hot press forming die. Each linear actuator referred to herein may be a pneumatic cylinder, a hydraulic cylinder, an electric push rod, or the like. For example, in this example, the first linear actuator 15 is a pneumatic cylinder, and the corresponding movable member is a piston rod of the pneumatic cylinder, the piston rod is connected to the upper mold plate 16, and the opening and closing of the upper mold plate 16 and the lower mold plate 17 are controlled by the expansion and contraction of the piston rod of the pneumatic cylinder.
As an implementation manner, in order to improve the production efficiency, the first linear conveying unit, the second linear conveying unit, the third linear conveying unit and the fourth linear conveying unit each include a first conveying mechanism 9, a second conveying mechanism 10 and a third conveying mechanism 11 which are sequentially arranged in a staggered manner, and the first conveying mechanism 9 and the second conveying mechanism 10, and the second conveying mechanism 10 and the third conveying mechanism 11 at least partially overlap on a projection perpendicular to the conveying direction; each linear conveying unit is provided with four stations which are a feeding station a, a hot-press forming station b, a cooling and shaping station c and a discharging station d in sequence, a first conveying mechanism 9 is used for conveying the workpiece 100 from the feeding station a to the hot-press forming station b, a second conveying mechanism 10 is used for conveying the workpiece 100 from the hot-press forming station b to the cooling and shaping station c, and a third conveying mechanism 11 is used for conveying the workpiece 100 from the cooling and shaping station c to the discharging station d. The feeding station a corresponds to the input end of each linear conveying unit, and the blanking station d corresponds to the output end of each linear conveying unit. Each hot-press forming die corresponds to the hot-press forming station b, and each cooling and shaping die corresponds to the cooling and shaping station c. The sequential offset arrangement is that more than two conveying mechanisms are arranged, the conveying directions are parallel, and two adjacent conveying mechanisms are not on the same straight line but are offset from each other.
Referring to fig. 9 to 11, the first conveying mechanism 9, the second conveying mechanism 10, and the third conveying mechanism 11 have the same structure and may be collectively referred to as a conveying mechanism. The first clamping mechanism 37, the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism may have the same structure and may be collectively referred to as a clamping mechanism. Each conveying mechanism all includes the slider that sets up along its direction of delivery slides, the both ends of slider are the vertical second straight line driver 20 that is provided with respectively, each all be connected with support piece 19 on the moving part of second straight line driver 20, and each fixture includes vertical third straight line driver 18 that sets up on support piece 19, third straight line driver 18 is the rotatory tight straight line driver of clamp of second, be provided with bearing surface 27 on the mounting of the rotatory tight straight line driver of clamp of second, bearing surface 27 be used for with the chuck 28 of the rotatory tight straight line driver of clamp of second forms the nip.
After the clamping mechanism of the first conveying mechanism 9 clamps the workpiece 100 and conveys the workpiece 100 from the feeding station a to the hot-press forming station b, the clamping mechanism of the first conveying mechanism 9 returns to the feeding station a to clamp another workpiece 100, after the clamping mechanism of the second conveying mechanism 10 clamps the workpiece 100 and conveys the workpiece 100 from the hot-press forming station b to the cooling and shaping station c, the clamping mechanism of the second conveying mechanism 10 returns to the hot-press forming station b to clamp another workpiece 100, and after the clamping mechanism of the third conveying mechanism 11 clamps the workpiece 100 and conveys the workpiece 100 from the cooling and shaping station c to the discharging station d, the clamping mechanism of the third conveying mechanism 11 returns to the cooling and shaping station c to clamp another workpiece 100.
As an implementation manner, the first conveying mechanism 9 further includes:
a slide rail is arranged on the base plate,
the sliding piece is in sliding fit with the sliding rail;
two ends of the slide rail are respectively provided with a driving belt wheel and a driven belt wheel, a driving belt 22 is wound between the driving belt wheel and the driven belt wheel, the driving belt 22 is fixedly connected with the sliding part, and the driving belt wheel is connected with a driving motor 23. The slide part moves back and forth on the slide rail through the transmission belt 22 by the positive and negative rotation of the driving motor 23 so as to control the corresponding clamping mechanism to move back and forth between two adjacent stations, thereby realizing the conveying of the workpiece 100.
As an implementation manner, referring to fig. 12, the upper mold plates 16 of the first hot press molding die 1, the second hot press molding die 3, the third hot press molding die 5, and the fourth hot press molding die 7 are provided with heaters or heating fluid flow passages 26. The upper die plate 16 is heated by a heater or by introducing hot liquid into the heating liquid flow passage 26, so that the portion of the upper portion of the workpiece 100 in contact with the upper die plate 16 is softened or melted, and is pressed into a predetermined shape under the pressure of the mold clamping of the upper die plate 16 and the lower die plate 17. Generally, only the upper die plate 16 is heated, but not the lower die plate 17, so that the lower portion of the workpiece 100 is not softened or melted during the hot press molding process, and has a strength to prevent the edge from being unintentionally deformed.
As an implementation manner, the upper mold plate 216 and/or the lower mold plate 217 of the first cooling and shaping mold 2, the second cooling and shaping mold 4, the third cooling and shaping mold 6, and the fourth cooling and shaping mold 8 are provided with cooling liquid flow passages. By introducing the cooling liquid into the cooling liquid flow channel, the upper template 216 and/or the lower template 217 of each cooling and shaping mold are kept in a cold state to cool and shape the workpiece 100 after hot press forming, and the upper template 216 and/or the lower template 217 of each cooling and shaping mold are kept in a cold state, so that the cooling and shaping time can be shortened, and the production efficiency is improved. Preferably, the upper template 216 and the lower template 217 of each cooling and shaping mold are provided with cooling liquid flow passages.
The hot press forming, cooling and shaping device for the composite sandwich panel will be described in detail with reference to a specific implementation of the rectangular workpiece 100 and its processing.
The composite sandwich plate hot press forming cooling and shaping device in the example is mainly divided into five parts according to the forming process sequence of the composite sandwich plate, wherein the first part A carries out hot press forming cooling and shaping on the long side of the front surface of the workpiece 100, the second part B carries out hot press forming cooling and shaping on the short side of the front surface of the workpiece 100, the third part C turns the workpiece 100 from the state that the second part B is positioned with the front surface facing upwards to the state that the third part C is positioned with the back surface facing upwards, the fourth part D carries out hot press forming cooling and shaping on the short side of the back surface of the workpiece 100, and the fifth part E carries out hot press forming cooling and shaping on the long side of the back surface of the workpiece 100.
The main difference between the first part a, the second part B, the fourth part D and the fifth part E lies in the difference between the cavities of the upper mold plate 16, 216 and the lower mold plate 17, 217, and the rest parts may adopt the same structure, which is only described in detail with reference to the first part a, and the structure of the rest parts is not repeated.
The first linear conveying unit of the first part A comprises a first conveying mechanism 9, a second conveying mechanism 10 and a third conveying mechanism 11 which are arranged in a staggered mode in sequence, and the first conveying mechanism 9, the second conveying mechanism 10 and the second conveying mechanism 10 are at least partially overlapped with the third conveying mechanism 11 on a projection perpendicular to the conveying direction of the first conveying mechanism 9; each linear conveying unit is provided with four stations which are a feeding station a, a hot-press forming station B, a cooling and shaping station C and a discharging station D in sequence, wherein the discharging station D of the first part A is shared with the feeding station a of the second part B, and the discharging station D of the third part C is shared with the feeding station a of the fourth part D.
The first conveying mechanism 9 is used for conveying the workpiece 100 from the loading station a to the hot press forming station b, the second conveying mechanism 10 is used for conveying the workpiece 100 from the hot press forming station b to the cooling and shaping station c, and the third conveying mechanism 11 is used for conveying the workpiece 100 from the cooling and shaping station c to the blanking station d. The feeding station a corresponds to the input end of each linear conveying unit, and the blanking station d corresponds to the output end of each linear conveying unit. Each hot-press forming die corresponds to the hot-press forming station b, and each cooling and shaping die corresponds to the cooling and shaping station c.
The first conveying mechanism 9, the second conveying mechanism 10, and the third conveying mechanism 11 have the same configuration, and may be collectively referred to as a conveying mechanism. The first clamping mechanism 37, the second clamping mechanism, the third clamping mechanism and the fourth clamping mechanism may have the same structure and may be collectively referred to as a clamping mechanism. Each conveying mechanism comprises a sliding part which is arranged in a sliding mode along the conveying direction of the conveying mechanism, the sliding part is arranged on a sliding rail in a sliding mode, the sliding part can be an integral part and can be formed by combining a plurality of sub-parts, in this example, the sliding part is formed by combining a plurality of sub-parts and comprises a connecting plate 24, a plurality of sliding blocks 25 are arranged below the connecting plate, the sliding blocks 25 are in sliding fit with the sliding rail, second linear drivers 20 are vertically arranged at two ends of the connecting plate 24 respectively, supporting pieces 19 are connected to moving parts of the second linear drivers 20, each clamping mechanism comprises a third linear driver 18 which is vertically arranged on the supporting pieces 19, the third linear driver 18 is a second rotary clamping linear driver, bearing surfaces 27 are arranged on the fixing pieces of the second rotary clamping linear drivers, and the bearing surfaces 27 are used for forming clamping mouths with clamping heads 28 of the second rotary clamping linear drivers.
Two ends of the slide rail are respectively provided with a driving belt wheel and a driven belt wheel, a driving belt 22 is wound between the driving belt wheel and the driven belt wheel, the driving belt 22 is fixedly connected with the sliding part, and the driving belt wheel is connected with a driving motor 23.
The first straight line conveying unit is provided with a first hot-press forming die 1 and a first cooling and shaping die 2 on two sides along the conveying direction, the first hot-press forming die 1 and the first cooling and shaping die 2 are respectively arranged on a base 12, and the base 12 is, for example, but not limited to, a welded frame structure. The base 12 may extend from the loading station a to the unloading station d, and the loading station a and the unloading station d may have a transfer support, which may be an integral frame structure with the base 12 or a separate frame structure, that is, the transfer support may be a part of the base 12 or a separate component independent from the base 12.
When the workpiece 100 is machined, a rectangular workpiece 100 (sheet material) is firstly placed on a supporting surface of a feeding station a of the first part a, a first conveying mechanism 9 is driven by a driving motor to enable a clamping mechanism of the first conveying mechanism to be located at a short side position of the workpiece 100, then a second linear driver 20 is operated to drive a supporting piece 19 to ascend, after the first conveying mechanism ascends to a position, the back surface of the workpiece 100 is supported on a bearing surface 27 arranged on a fixing part of the second rotary clamping linear driver, then the second rotary clamping linear driver performs clamping operation to clamp the workpiece 100 together with the bearing surface 27, and when the second rotary clamping linear driver performs clamping operation, a movable part firstly rotates to enable a chuck 28 of the movable part to be located on the workpiece 100, and then the movable part moves downwards to enable the chuck 28 and the bearing surface 27 to form a clamping opening to clamp the workpiece 100. After the workpiece 100 is clamped, the driving motor drives the sliding piece to slide along the sliding rail through the transmission belt, so that the workpiece 100 is conveyed to the hot-press forming station b from the feeding station a, before the workpiece 100 is conveyed to the hot-press forming station b, the upper template 16 and the lower template 17 of the first hot-press forming die 1 are separated under the action of the first linear driver 15, when the workpiece 100 is conveyed to the hot-press forming station b, the long edge of the workpiece 100 is located between the upper template 16 and the lower template 17, then, the upper template 16 of the first hot-press forming die 1 moves downwards under the action of the first linear driver 15, so that the workpiece 100 is pressed between the upper template 16 and the lower template 17 for hot-press forming. After the workpiece 100 is pressed between the upper template 16 and the lower template 17 of the first hot press forming die 1, the movable member of the second rotary clamping linear driver in the first conveying mechanism 9 moves upward and moves away from above the workpiece 100 to release the short side of the workpiece 100, then the second linear driver 20 in the first conveying mechanism 9 contracts, after the contraction is in place, the driving motor drives the sliding member to slide along the sliding rail through the driving belt, so that the clamping mechanism of the first conveying mechanism 9 returns to the loading station a to clamp another workpiece 100, meanwhile, the second conveying mechanism 10 adopts a similar action as the first conveying mechanism 9 to clamp the clamping mechanism of the second conveying mechanism 10 on the short side of the workpiece 100 located at the hot press forming station b, after the hot press forming is finished, the workpiece 100 is moved to the cooling and forming station c, the long side after the hot press forming is cooled and formed by the upper template 216 and the lower template 217 of the first cooling and forming die 2, after the workpiece 100 is clamped by the upper template 216 and the lower template 217 of the first cooling and forming die 2, the clamping mechanism of the second conveying mechanism 10 releases the workpiece 100, returns to the clamping mechanism 100 to the clamping station b to clamp the third conveying mechanism 11, and after the hot press forming is finished, the clamping mechanism 11, and the workpiece 100 is moved to the third conveying mechanism 11 c, and the third conveying mechanism 11 is moved to clamp the third conveying mechanism 11. The workpiece 100 is pressed against the transfer support of the blanking station d by the chuck 28 of the first rotary clamping linear drive 29 of the blanking station d. Then the clamping mechanism of the third conveying mechanism 11 releases the workpiece 100 and returns to the cooling and shaping station C, at the same time, the first conveying mechanism 9 of the second part B clamps the workpiece 100 by similar actions as described above and conveys the workpiece 100 to the hot press shaping station B of the second part B, the short side of the workpiece 100 is hot press shaped by the second hot press shaping mold 3, the cooling and shaping of the short side are performed after the short side is decompressed and shaped, then the workpiece 100 is conveyed to the blanking station D of the second part B under the drive of the third conveying mechanism 11 of the second part B, the blanking work of the second part B is used as a station before the turning of the third part C, the short side of the workpiece 100 is clamped between the upper clamping jaw 36 and the lower clamping jaw 35 of the turning mechanism at the station, the workpiece 100 is driven to turn over for 180 degrees, the turning mechanism is turned over from the front side to the back side, so that the short side and the long side of the back side of the workpiece 100 are hot press shaped and cooled and shaped by the fourth part E, the hot press shaping and the cooling and shaping processes of the cooling and shaping of the back side are the front side are the workpiece 100 are the same as those of the hot press shaping and the cooling and shaping of the front side.
It will be understood that any orientation or positional relationship indicated above with respect to the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered limiting of the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. The utility model provides a compound battenboard hot briquetting cooling setting device which characterized in that includes:
the conveying device comprises a first linear conveying unit and a second linear conveying unit which are sequentially arranged, wherein the conveying direction of the first linear conveying unit is intersected with that of the second linear conveying unit;
a first hot-pressing forming die and a first cooling and shaping die are respectively arranged on two sides of the first linear conveying unit along the conveying direction of the first linear conveying unit;
a second hot-pressing forming die and a second cooling and shaping die are respectively arranged on two sides of the second linear conveying unit along the conveying direction of the second linear conveying unit;
the first linear conveying unit comprises a first clamping mechanism capable of sliding along the conveying direction of the first linear conveying unit, and the first clamping mechanism is positioned between the two first hot-pressing forming dies;
the second linear conveying unit comprises a second clamping mechanism which can slide along the conveying direction of the second linear conveying unit, and the second clamping mechanism is positioned between the two second hot-pressing forming dies;
further comprising:
the third linear conveying unit and the fourth linear conveying unit are arranged in sequence, and the conveying direction of the third linear conveying unit is crossed with that of the fourth linear conveying unit;
a third hot-pressing forming die and a third cooling and shaping die are respectively arranged on two sides of the third linear conveying unit along the conveying direction of the third linear conveying unit;
a fourth hot-pressing forming die and a fourth cooling and shaping die are respectively arranged on two sides of the fourth linear conveying unit along the conveying direction of the fourth linear conveying unit;
the third linear conveying unit comprises a third clamping mechanism capable of sliding along the conveying direction of the third linear conveying unit, and the third clamping mechanism is positioned between the two third hot-press forming dies;
the fourth linear conveying unit comprises a fourth clamping mechanism capable of sliding along the conveying direction of the fourth linear conveying unit, and the fourth clamping mechanism is positioned between the two fourth hot-press forming dies;
the second linear conveying unit and the third linear conveying unit are in the same conveying direction, and a plate turnover mechanism is arranged between the second linear conveying unit and the third linear conveying unit.
2. The composite sandwich plate hot press forming, cooling and sizing device as claimed in claim 1, wherein the plate turning mechanism comprises a rotating shaft, an axis of the rotating shaft is perpendicular to the conveying direction of the second linear conveying unit, two supporting members are fixedly connected to the rotating shaft, the two supporting members extend to the same side of the rotating shaft, and fifth clamping mechanisms are respectively arranged on opposite sides of the two supporting members.
3. The composite sandwich panel hot press forming, cooling and sizing device according to claim 2, wherein the fifth clamping mechanism comprises a clamping seat, an upper clamping jaw and a lower clamping jaw are arranged on the clamping seat, and at least one of the upper clamping jaw and the lower clamping jaw is in sliding fit with the clamping seat.
4. The composite sandwich panel hot press forming, cooling and shaping device according to claim 2, further comprising at least two transfer support members, wherein the transfer support members are respectively located at the conveying ends of the second linear conveying unit and the third linear conveying unit, a first rotary clamping linear driver is arranged at an edge of the transfer support member, and a chuck of the first rotary clamping linear driver is used for pressing the workpiece to be transferred on the transfer support member.
5. The composite sandwich panel hot press forming cooling setting device as claimed in claim 1,
the first hot-press forming die and the first cooling and shaping die are adjustable in position along the conveying direction vertical to the first linear conveying unit respectively;
the second hot-pressing forming die and the second cooling and shaping die are adjustable in position along the conveying direction vertical to the second linear conveying unit respectively;
the third hot pressing forming die and the third cooling and shaping die are adjustable in position along the conveying direction perpendicular to the third linear conveying unit respectively;
the fourth hot pressing forming die and the fourth cooling and shaping die are adjustable in position along the conveying direction perpendicular to the fourth linear conveying unit.
6. The composite sandwich plate hot press molding, cooling and shaping device according to claim 5, wherein the first hot press molding die, the second hot press molding die, the third hot press molding die, the fourth hot press molding die, the first cooling and shaping die, the second cooling and shaping die, the third cooling and shaping die and the fourth cooling and shaping die each comprise an upper template and a lower template which are closed to each other, each lower template is connected with a die mounting seat, each die mounting seat is connected to the base in a sliding manner, each die mounting seat is fixedly connected with a first linear driver, and a moving part of each first linear driver is connected with the corresponding upper template.
7. The composite sandwich panel hot press forming cooling and sizing device according to any one of claims 1 to 6, wherein the first linear conveying unit, the second linear conveying unit, the third linear conveying unit and the fourth linear conveying unit each comprise a first conveying mechanism, a second conveying mechanism and a third conveying mechanism which are arranged in a staggered manner in sequence, and the first conveying mechanism and the second conveying mechanism, and the second conveying mechanism and the third conveying mechanism at least partially overlap on a projection perpendicular to a conveying direction thereof;
the first conveying mechanism, the second conveying mechanism and the third conveying mechanism are identical in structure and respectively comprise a sliding part which is arranged in a sliding mode along the conveying direction of the sliding part, second linear drivers are vertically arranged at two ends of the sliding part respectively, a moving part of each second linear driver is connected with a supporting part, a third linear driver is vertically arranged on the supporting part and is a second rotary clamping linear driver, a fixing part of the second rotary clamping linear driver is provided with a bearing surface, and the bearing surface is used for forming a clamping opening with a clamping head of the second rotary clamping linear driver.
8. The composite sandwich panel hot press forming cooling setting device according to claim 7, further comprising:
a slide rail is arranged on the base plate,
the sliding piece is in sliding fit with the sliding rail;
the two ends of the sliding rail are respectively provided with a driving belt wheel and a driven belt wheel, a driving belt is wound between the driving belt wheel and the driven belt wheel and fixedly connected with the sliding part, and the driving belt wheel is connected with a driving motor.
9. The composite sandwich plate hot press forming, cooling and shaping device as claimed in claim 6, wherein the upper mold plates of the first, second, third and fourth hot press forming molds are provided with heaters or heating fluid flow passages.
10. The composite sandwich plate hot press forming cooling setting device of claim 6 or 9, wherein the upper and/or lower mold plates of the first, second, third and fourth cooling setting molds are provided with cooling liquid flow passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011294583.5A CN114516157B (en) | 2020-11-18 | 2020-11-18 | Composite sandwich plate hot-press forming cooling and shaping device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011294583.5A CN114516157B (en) | 2020-11-18 | 2020-11-18 | Composite sandwich plate hot-press forming cooling and shaping device |
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| CN114516157A CN114516157A (en) | 2022-05-20 |
| CN114516157B true CN114516157B (en) | 2023-04-07 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2217396C3 (en) * | 1972-04-11 | 1975-07-17 | G. Siempelkamp & Co, 4150 Krefeld | Device for loading and unloading plate presses |
| JP3984575B2 (en) * | 2003-08-20 | 2007-10-03 | 日精樹脂工業株式会社 | Laminating equipment |
| CN205631193U (en) * | 2016-04-09 | 2016-10-12 | 余乐伦 | Hot briquetting cools off forming machine |
| CN108340526A (en) * | 2017-01-23 | 2018-07-31 | 上海联净复合材料技术有限公司 | The system of processing and method of modularization foamed board |
| CN206747896U (en) * | 2017-05-10 | 2017-12-15 | 河南恒赛尔汽配有限公司 | A kind of production line for manufacturing leaf spring |
| CN207657165U (en) * | 2017-08-29 | 2018-07-27 | 秦文隆 | Air hermetic continuous hot-press molding machine |
| CN207310150U (en) * | 2017-10-24 | 2018-05-04 | 益阳万维竹业有限公司 | A kind of wood-based plate hot pressing transport system |
| DE102018114125A1 (en) * | 2018-06-13 | 2019-12-19 | Adler Pelzer Holding Gmbh | Method and device for the production of molded textile multilayer composites |
| CN108900961B (en) * | 2018-07-14 | 2020-07-10 | 东莞富采包装制品有限公司 | Semi-finished earmuff production line |
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