Compression molding equipment and compression molding process for extrusion tray

Abstract

The compression molding equipment comprises an extruder, a flow distribution adjusting mechanism, a conveying mechanism and a molding mechanism, and the flow distribution adjusting mechanism comprises a first extrusion mold and a second extrusion mold which communicate with the extruder; the conveying mechanism comprises a first guide rail, a second guide rail, a first trolley moving along the first guide rail, a second trolley moving along the second guide rail, an upper bracket on the first trolley and a lower bracket on the second trolley, the forming mechanism comprises a mold frame, a forming station on the mold frame, an upper mold on the upper side of the forming station and a lower mold on the lower side of the forming station, and the upper mold and the lower mold are opposite up and down; the time for the first trolley to move from the first extrusion die to the forming station is consistent with the time for the second trolley to move from the second extrusion die to the forming station. The compression molding equipment is simple in structure, small in occupied area, capable of saving energy, capable of improving efficiency, convenient to operate and high in automation degree.

Description

Technical Field

[0001] The present application relates to the technical field of tray molding, and in particular to a compression molding device and a compression molding process for an extruded tray. Background Art

[0002] The pallet is a double-layer plastic pallet, which is divided into two pieces, the upper and lower pieces, which are respectively formed by an upper mold and a lower mold. The formed upper and lower pieces are then pressed together into a whole. The current molding equipment has a complex structure and is inconvenient to operate. Summary of the invention

[0003] In order to solve the problems of complex structure and process in the prior art, the purpose of the present application is to provide a compression molding device and a compression molding process for an extruded pallet.

[0004] To achieve the above purpose, the present application adopts the following technical solution: a molding device for extruding a tray, comprising: An extruder; The distribution flow regulating mechanism comprises a first extrusion die and a second extrusion die which are respectively connected to the fluid of the one extruder and extrude synchronously; the inlet of the first extrusion die and the second extrusion die are provided with flow regulating valves to adjust the fluid size; The conveying mechanism includes a first guide rail and a second guide rail arranged parallel to each other, a first trolley moving along the first guide rail, a second trolley moving along the second guide rail, an upper bracket carried on the first trolley for receiving an upper sheet, and a lower bracket carried on the second trolley for receiving a lower sheet; and The molding mechanism comprises a mold frame, a molding station arranged on the mold frame, an upper mold arranged on the upper side of the molding station and a lower mold arranged on the lower side of the molding station, wherein the upper mold and the lower mold are arranged relative to each other in the upper and lower directions; Among them, the first trolley has a first extrusion position located below the first extrusion mold, the second trolley has a second extrusion position located below the second extrusion mold, and the conveying mechanism is configured to deliver the first trolley from the first extrusion position to the molding station at the same time as the time when the second trolley is delivered from the second extrusion position to the molding station.

[0005] In the above technical solution, it is further preferred that the extruder, the distribution flow regulating mechanism, the first extrusion die, the second extrusion die, the first guide rail and the second guide rail are arranged on the same side of the molding mechanism, and the first extrusion die and the second extrusion die are staggered front and back.

[0006] In the above technical solution, it is further preferred that the distribution flow regulating mechanism also includes a support frame, a diverter arranged on the support frame, and a first flow channel and a second flow channel, the diverter is connected to the output end of the extruder, the first flow channel is connected between the diverter and the flow regulating valve provided at the inlet of the first extrusion mold, the second flow channel is connected between the diverter and the flow regulating valve provided at the inlet of the second extrusion mold, and the lengths of the first flow channel and the second flow channel are consistent.

[0007] In the above technical solution, it is further preferred that the distance from the second extrusion position to the molding station is greater than the distance from the first extrusion position to the molding station, and the conveying mechanism also includes a first driving mechanism connected to the first trolley and a second driving mechanism connected to the second trolley, and the speed at which the second driving mechanism drives the second trolley to move along the second guide rail is greater than the speed at which the first driving mechanism drives the first trolley to move along the first guide rail.

[0008] In the above technical solution, it is further preferred that the first drive mechanism and the second drive mechanism both have a drive motor, a gear transmission connected to the drive motor and a rack meshing with the gear, each of the racks is parallel to the corresponding first guide rail or the second guide rail, and each of the drive motors is respectively arranged on the corresponding first trolley or the second trolley.

[0009] In the above technical solution, it is further preferred that the first trolley includes a vehicle body, an upper base arranged on the upper side of the vehicle body, a lower base arranged on the lower side of the vehicle body, an upper top component that drives the upper base upward away from the vehicle body, and a lower top component that drives the lower base downward away from the vehicle body.

[0010] In the above technical solution, it is further preferred that the upper bracket is arranged on the upper base, and the upper base is provided with a plurality of teeth extending upward, and the plurality of teeth are arranged around the edge of the upper bracket.

[0011] In the above technical solution, it is further preferred that an adsorption component is also provided on the lower base, and the adsorption component is used to adsorb the sheet material carried by the lower bracket onto the lower base.

[0012] In the above technical scheme, it is further preferred that the upper top assembly includes multiple first cylinders, the cylinder body of each of the first cylinders is arranged on the vehicle body, the piston rod of each of the first cylinders is connected to the upper base, and the multiple first cylinders are symmetrically arranged on both sides of the vehicle body; the lower top assembly includes multiple second cylinders, the cylinder body of each of the second cylinders is arranged on the vehicle body, the piston rod of each of the second cylinders is connected to the lower base, the multiple second cylinders are symmetrically arranged on both sides of the vehicle body, and the multiple second cylinders and the multiple first cylinders are arranged independently of each other.

[0013] To achieve the above-mentioned purpose, the present application also provides a technical solution: a compression molding process for an extruded tray, the compression molding process comprising the following steps: (1) using an extruder to transport materials to two extrusion dies, and the two extrusion dies extrude an upper sheet and a lower sheet respectively at the same time; (2) using a first trolley and a second trolley to respectively deliver the upper sheet and the lower sheet into a molding mechanism along a first guide rail and a second guide rail stacked up and down; (3) the first trolley lifts the upper sheet and delivers it into the upper mold of the molding mechanism for vacuum molding, and the second trolley transfers the lower sheet to the lower mold for molding; (4) the second trolley and the first trolley successively exit the molding mechanism; (5) the upper mold and the lower mold of the molding mechanism are closed to combine the upper sheet and the lower sheet together by hot pressing.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The compression molding equipment of the present application provides materials for the upper sheet and the lower sheet through an extruder. The upper sheet and the lower sheet are simultaneously transported to the mold by two carts for molding processing to complete the production of the double-layer extruded pallet. It has a simple structure, a small footprint, energy saving and improved efficiency, convenient operation and a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a compression molding device (excluding an extruder) provided in an embodiment of the present application; Figure 2 A top view of the compression molding device provided in an embodiment of the present application; Figure 3 For along Figure 2 The cross-sectional view cut along the AA line in the figure; Figure 4 for Figure 2 A side view of a compression molding apparatus in FIG. Figure 5 for Figure 3 A schematic diagram of the three-dimensional structure of the first trolley in FIG. Figure 6 for Figure 5 The front view of the first car in FIG. Figure 7 for Figure 3 A front view of the first driving mechanism (excluding the first driving motor); Figure 8 for Figure 7 A side view of the first driving mechanism in FIG. Fig. 9 for Figure 2 Schematic diagram of the three-dimensional exploded structure of the extruded tray produced by the compression molding equipment; Fig.10 for Fig. 9 Schematic diagram of the three-dimensional exploded structure of the extrusion tray viewed from another perspective.

[0016] Wherein: 100, compression molding equipment; 10, extruder; 20, distribution flow regulating mechanism; 1, support frame; 2, diverter; 3, first extrusion mold; 4, second extrusion mold; 30, conveying mechanism; 5, first guide rail; 6, second guide rail; 7, first trolley; 71, trolley body; 72, upper base; 721, gear; 73, lower base; 74, upper top assembly; 741, first cylinder; 75, lower top assembly; 751, second cylinder; 76, adsorption assembly; 8, second trolley; 91, upper bracket; 92, lower bracket; 11, first driving mechanism; 112, first gear; 113, first rack; 12, second driving mechanism; 40, molding mechanism; 13, mold frame; 14, molding station; 15, upper mold; 16, lower mold; 200, upper sheet; 300, lower sheet. DETAILED DESCRIPTION

[0017] To describe the technical content, structural features, achieved purpose and effect of the application in detail, the technical solutions in the embodiments of the application will be described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shape, structure and characteristics of the exemplary embodiment may be used or implemented in another exemplary embodiment.

[0018] In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0019] The terms “upper”, “lower”, “front” and “back” in this application refer to the attached Figure 1 Top, bottom, front and back shown.

[0020] In the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0021] The present application embodiment provides a molding device for extruding a tray, such as Figure 1 , 2 As shown, the compression molding device 100 includes an extruder 10 , a distribution flow regulating mechanism 20 , a conveying mechanism 30 and a molding mechanism 40 , and the extruder 10 , the distribution flow regulating mechanism 20 and the conveying mechanism 30 are arranged on the rear side of the molding mechanism 40 .

[0022] like Figure 1-4 As shown, the extruder 10 is used to convey the material of the sheet to the distribution flow regulating mechanism 20, and the distribution flow regulating mechanism 20 includes a support frame 1, a diverter 2, a first extrusion die 3 and a second extrusion die 4, and the diverter 2, the first extrusion die 3 and the second extrusion die 4 are all arranged on the support frame 1. The diverter 2 is connected to the output end of the extruder 10, and a flow regulating valve is also provided at the entrance of the first extrusion die 3 and the second extrusion die 4. The diverter 2 is connected to the flow regulating valve at the first extrusion die 3 through the first flow channel, and is connected to the flow regulating valve at the second extrusion die 4 through the second flow channel. The lengths of the first flow channel and the second flow channel are consistent. The diverter 2 is used to distribute the material of the extruder 10 to the first extrusion die 3 and the second extrusion die 4, and the flow regulating valve regulates the flow of the material delivered to the two extrusion dies. The first extrusion die 3 extrude the material into an upper sheet, and the second extrusion die 4 extrude the material into a lower sheet. The first extrusion die 3 is located at the front side and the upper side of the second extrusion die 4, and the first extrusion die 3 and the second extrusion die 4 are independently arranged on the support frame 1.

[0023] The conveying mechanism 30 includes a first guide rail 5 and a second guide rail 6 arranged in parallel up and down, a first trolley 7 moving along the first guide rail 5, a second trolley 8 moving along the second guide rail 6, an upper bracket 91 carried on the first trolley 7, and a lower bracket 92 carried on the second trolley 8. The first guide rail 5 and the second guide rail 6 both extend in the front-to-back direction. The first guide rail 5 extends from the bottom of the first extrusion die 3 to the inside of the molding mechanism 40, and the second guide rail 6 extends from the bottom of the second extrusion die 4 to the inside of the molding mechanism 40. The first trolley 7 is slidably connected to the first guide rail 5, and the second trolley 8 is slidably connected to the second guide rail 6. The upper bracket 91 is arranged on the first trolley 7, used to carry the upper sheet extruded by the first extrusion die 3, and moves along the first guide rail 5 with the first trolley 7; the lower bracket 92 is arranged on the second trolley 8, used to carry the lower sheet extruded by the second extrusion die 4, and moves along the second guide rail 6 with the second trolley 8. The conveying mechanism 30 also includes a first driving mechanism 11 connected to the first trolley 7 and a second driving mechanism 12 connected to the second trolley 8. The first driving mechanism 11 is used to drive the first trolley 7 to move along the first guide rail 5, and the second driving mechanism 12 is used to drive the second trolley 8 to move along the second guide rail 6.

[0024] like Figure 3 , 7 8, the first driving mechanism 11 includes a first driving motor (not shown in the figure), a first gear 112 and a first rack 113. The first driving motor is connected to the first gear 112 to drive the first gear 112 to rotate. The first rack 113 is parallel to the first guide rail 5. The first gear 112 and the first rack 113 are meshed. The first driving motor is arranged on the first trolley 7. When the first driving motor drives the first gear 112 to rotate, the first trolley 7 moves along the first guide rail 5 through the meshing between the first gear 112 and the first rack 113. The second driving mechanism 12 has the same structure as the first driving mechanism 11, and will not be described in detail here.

[0025] like Figure 3 As shown, the molding mechanism 40 includes a mold frame 13, a molding station 14 arranged on the mold frame 13, an upper mold 15 arranged on the upper side of the molding station 14, and a lower mold 16 arranged on the lower side of the molding station 14. The upper mold 15 and the lower mold 16 are arranged relatively to each other up and down, and can be movably arranged on the mold frame 13 in the up and down directions.

[0026] The first trolley 7 is configured to move along the first guide rail 5 from the bottom of the first extrusion die 3 to the molding station 14, and the second trolley 8 is configured to move along the second guide rail 6 from the bottom of the second extrusion die 4 to the molding station 14. Furthermore, the time when the first trolley 7 moves from the first extrusion die 3 to the molding station 14 is consistent with the time when the second trolley 8 moves from the second extrusion die 4 to the molding station 14. Since the second extrusion die 4 is located at the rear side of the first extrusion die 3, the speed of the second trolley 8 is greater than the speed of the first trolley 7.

[0027] like Figure 5 , 6 As shown, the first trolley 7 includes a vehicle body 71, an upper base 72 arranged on the upper side of the vehicle body 71, a lower base 73 arranged on the lower side of the vehicle body 71, an upper top component 74 that drives the upper base 72 upward away from the vehicle body 71, and a lower top component 75 that drives the lower base 73 downward away from the vehicle body 71.

[0028] The upper bracket 91 is arranged on the upper base 72 , and a plurality of teeth 721 extending upward are arranged on the upper base 72 . The plurality of teeth 721 are arranged around the upper bracket 91 so that the upper sheet can be stably supported on the upper base 72 . The upper bracket 91 moves up and down relative to the vehicle body 71 along with the upper base 72 .

[0029] An adsorption assembly 76 is also provided on the lower base 73, and the adsorption assembly 76 includes a plurality of adsorption cylinders 761. The plurality of adsorption cylinders 761 are used to adsorb the lower sheet carried on the lower bracket 92 onto the lower surface of the lower base 73. When the lower base 73 moves downward under the drive of the lower top assembly 75, the lower sheet adsorbed on the lower base 73 moves along with the lower base 73.

[0030] The upper top assembly 74 includes a plurality of first cylinders 741, which are connected between the upper base 72 and the vehicle body 71 by transmission, and the cylinder body of each first cylinder 741 is arranged on the vehicle body 71, and the piston rod of each first cylinder 741 is connected to the upper base 72; the lower top assembly 75 includes a plurality of second cylinders 751, which are connected between the lower base 73 and the vehicle body 71 by transmission, and the cylinder body of each second cylinder 751 is arranged on the vehicle body 71, and the piston rod of each second cylinder 751 is connected to the lower base 73. The plurality of first cylinders 741 are symmetrically arranged on both sides of the vehicle body 71 to ensure that the upper base 72 is stably lifted relative to the vehicle body 71, and the plurality of second cylinders 751 are symmetrically arranged on both sides of the vehicle body 71 to ensure that the lower base 73 is stably lifted relative to the vehicle body 71, and the plurality of first cylinders 741 and the plurality of second cylinders 751 are independently arranged.

[0031] The present application embodiment provides a compression molding process for an extruded tray, which is applicable to the compression molding equipment described above. The compression molding process includes the following steps: (1) One extruder delivers materials to two extrusion dies, and the two extrusion dies extrude the upper sheet and the lower sheet respectively; (2) The first trolley and the second trolley respectively deliver the upper sheet and the lower sheet into the forming mechanism along the first guide rail and the second guide rail stacked up and down; The first trolley lifts the upper sheet and sends it into the upper mold of the forming mechanism for vacuum forming, and the second trolley transfers the lower sheet to the lower mold for forming; The second trolley and the first trolley exit the forming mechanism successively; The upper mold and the lower mold of the forming mechanism are closed to combine the upper sheet and the lower sheet together by hot pressing.

[0032] In step (3), the lower sheet is adsorbed onto the lower base 73 by the adsorption assembly 76 of the lower base 73; the piston rods of the plurality of first cylinders 741 and the plurality of second cylinders 751 are pushed out to push out the upper base 72 and the lower base 73, the upper sheet is lifted up by the upper base 72 and sent into the upper mold, where it is vacuum-formed, and the lower sheet is sunk by the lower base 73 and sent into the lower mold, where it is compression-formed.

[0033] like Fig. 9 , 10 As shown, the extrusion tray is a double-layer tray, including an upper sheet 200 with a foot pier and a lower sheet 300 matching the upper sheet 200. The upper mold 15 and the upper bracket 91 vacuum-form the upper sheet extruded by the first extrusion mold 3 into the upper sheet 200 with the foot pier. The lower mold 16 and the lower base 73 of the first trolley 7 vacuum-form the lower sheet extruded by the second extrusion mold 4 into the lower sheet 300. The upper mold 15 and the lower mold 16 are then closed to press the upper sheet 200 and the lower sheet 300 into the extrusion tray.

[0034] The compression molding equipment of the present application provides materials for the upper sheet and the lower sheet through an extruder. The upper sheet and the lower sheet are simultaneously transported to the mold by two carts for molding processing to complete the production of the double-layer extruded pallet. It has a simple structure, a small footprint, energy saving and improved efficiency, convenient operation and a high degree of automation.

[0035] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A compression molding device for an extruded tray, characterized in that: include: An extruder; The distribution flow regulating mechanism comprises a first extrusion die and a second extrusion die which are respectively connected to the fluid of the one extruder and extrude synchronously; the inlet of the first extrusion die and the second extrusion die are provided with flow regulating valves to adjust the fluid size; The conveying mechanism includes a first guide rail and a second guide rail arranged parallel to each other, a first trolley moving along the first guide rail, a second trolley moving along the second guide rail, an upper bracket carried on the first trolley for receiving an upper sheet, and a lower bracket carried on the second trolley for receiving a lower sheet; as well as The molding mechanism comprises a mold frame, a molding station arranged on the mold frame, an upper mold arranged on the upper side of the molding station and a lower mold arranged on the lower side of the molding station, wherein the upper mold and the lower mold are arranged relative to each other in the upper and lower directions; Among them, the first trolley has a first extrusion position located below the first extrusion mold, the second trolley has a second extrusion position located below the second extrusion mold, and the conveying mechanism is configured to deliver the first trolley from the first extrusion position to the molding station at the same time as the time when the second trolley is delivered from the second extrusion position to the molding station.

2. The compression molding device according to claim 1, characterized in that: The extruder, the distribution flow regulating mechanism, the first extrusion die, the second extrusion die, the first guide rail and the second guide rail are arranged on the same side of the molding mechanism, and the first extrusion die and the second extrusion die are staggered in front and back.

3. The compression molding device according to claim 2, characterized in that: The distribution flow regulating mechanism also includes a support frame, a diverter arranged on the support frame, and a first flow channel and a second flow channel. The diverter is connected to the output end of the extruder, the first flow channel is connected between the diverter and the flow regulating valve provided at the inlet of the first extrusion mold, the second flow channel is connected between the diverter and the flow regulating valve provided at the inlet of the second extrusion mold, and the lengths of the first flow channel and the second flow channel are consistent.

4. The compression molding device according to claim 2, characterized in that: The distance from the second extrusion position to the molding station is greater than the distance from the first extrusion position to the molding station. The conveying mechanism also includes a first driving mechanism connected to the first trolley and a second driving mechanism connected to the second trolley. The speed at which the second driving mechanism drives the second trolley to move along the second guide rail is greater than the speed at which the first driving mechanism drives the first trolley to move along the first guide rail.

5. The compression molding device according to claim 4, characterized in that: The first driving mechanism and the second driving mechanism both have a driving motor, a gear transmission-connected to the driving motor, and a rack meshing with the gear. Each of the racks is parallel to the corresponding first guide rail or the second guide rail, and each of the driving motors is arranged on the corresponding first trolley or the second trolley.

6. The compression molding device according to claim 1, characterized in that: The first trolley includes a vehicle body, an upper base arranged on the upper side of the vehicle body, a lower base arranged on the lower side of the vehicle body, an upper top component that drives the upper base upward away from the vehicle body, and a lower top component that drives the lower base downward away from the vehicle body.

7. The compression molding device according to claim 6, characterized in that: The upper bracket is arranged on the upper base, and the upper base is provided with a plurality of teeth extending upward, and the plurality of teeth are arranged around the edge of the upper bracket.

8. The compression molding device according to claim 6, characterized in that: The lower base is also provided with an adsorption component, and the adsorption component is used to adsorb the sheet material carried by the lower bracket onto the lower base.

9. The compression molding device according to claim 6, characterized in that: The upper top assembly includes a plurality of first cylinders, the cylinder body of each of the first cylinders is arranged on the vehicle body, the piston rod of each of the first cylinders is connected to the upper base, and the plurality of first cylinders are symmetrically arranged on both sides of the vehicle body; the lower top assembly includes a plurality of second cylinders, the cylinder body of each of the second cylinders is arranged on the vehicle body, the piston rod of each of the second cylinders is connected to the lower base, and the plurality of second cylinders are symmetrically arranged on both sides of the vehicle body, and the plurality of second cylinders and the plurality of first cylinders are arranged independently of each other.

10. A compression molding process for an extruded tray, characterized in that: The compression molding process comprises the following steps: (1) using an extruder to transport materials to two extrusion dies, and the two extrusion dies extrude an upper sheet and a lower sheet respectively at the same time; (2) using a first trolley and a second trolley to respectively feed the upper sheet and the lower sheet into a molding mechanism along a first guide rail and a second guide rail stacked up and down; (3) the first trolley lifts the upper sheet and feeds it into the upper mold of the molding mechanism for vacuum molding, and the second trolley transfers the lower sheet to the lower mold for molding; (4) the second trolley and the first trolley successively exit the molding mechanism; (5) the upper mold and the lower mold of the molding mechanism are closed to combine the upper sheet and the lower sheet together by hot pressing.

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