Extrusion molding device and molding process of hollow plate box

Abstract

The invention discloses an extrusion molding device and a molding process of a hollow plate box, and belongs to the technical field of production of hollow plate boxes. Comprising a supporting bottom plate; the extruding unit is fixedly arranged at the top of the supporting bottom plate; the extrusion die is fixedly arranged on one side of the extrusion unit; the cutting mechanism is arranged on the outer side of the traction mechanism, the cutting mechanism comprises four cutting blades, and the four cutting blades are used for cutting the four corners of the hollow plate box; due to the adoption of the cutting mechanism, the two ends of the processed hollow box body can be cut by using four cutting blades, so that the hollow box body forms a complete box body, and the problem that the two ends cannot be automatically processed to form the complete box body after extrusion molding is effectively solved; and therefore, the technical effect that the two ends can be automatically processed after extrusion molding so as to form a complete box body is achieved.

Description

Technical Field

[0001] This application relates to the technical field of the production of hollow panel boxes, and more specifically, to an extrusion molding device and a molding process for hollow panel boxes. Background Art

[0002] The extrusion molding process of a hollow panel box mainly includes steps such as raw material melting, extrusion, and cooling and solidification. First, the raw materials need to be heated and mixed to make them melt into a flowing melt. The melted plastic melt is fed into the screw cavity of the extruder. During the rotation of the screw, the plastic melt is pushed to the head of the screw. Through the shape and size of the die outlet, the plastic melt is extruded into the shape of a hollow panel. The extruded hollow panel needs to be cooled and solidified to obtain the required performance and shape stability. Finally, according to the required size of the panel box, cutting, splicing, and testing are carried out on the hollow panel to form a qualified hollow panel box.

[0003] In the related art, in order to facilitate the one-time molding of hollow panel boxes and improve production efficiency and quality, for example, the patent with the publication number CN104260962B in the prior art provides a one-time molding hollow packaging box, a continuous extrusion device for producing the hollow packaging box, and a production process. The continuous extrusion device includes a plastic extruder, a die set at the head of the plastic extruder, a cooling and shaping device, a traction device, a cutting device, and a conveying device. The die includes a die outer body, a die inner core, and a die inner body. The die outer body is a hollow box body composed of a side plate bottom plate extrusion part I and a side plate connecting part extrusion part I. The die inner core includes a plurality of rectangular cores, which are mainly used to separate the "mouth" - shaped structure of the hollow packaging box plate. The triangular cores are mainly used to separate the triangular support areas of the main connecting part and the connecting transition part. There are die air holes in the cores, which are mainly used to discharge excess gas. The die inner body is a hollow box body composed of a side plate bottom plate extrusion part II and a side plate connecting part extrusion part II. The side plate connecting part extrusion part II mainly presents a dovetail - shaped structure opposite to the main connecting part of the triangular support. After the die outer body, the die inner core, and the die inner body are buckled, a cavity for extruding the side plates and the side plate connecting parts of the hollow packaging box is formed. Among them, the angular structure of the main connecting part and the connecting transition part is a specific structure, which is determined by the die structure form. Different structure forms can design different dies.

[0004] Although the above - mentioned prior art solution can achieve the effect of directly extruding and molding a hollow panel box at the same time by setting a die with a specific structure on the head of the extruder, the extruded box body is cylindrical, and further processing is required at both ends to form a complete box body. Therefore, it is impossible to automatically process both ends after extrusion molding to form a complete box body.

[0005] In view of this, we propose an extrusion molding device and a molding process for hollow panel boxes. Summary of the invention

[0006] The purpose of the present application is to provide an extrusion molding device and molding process for a hollow board box, which solves the technical problem that the two ends cannot be automatically processed to form a complete box body after extrusion molding, and achieves the technical effect that the two ends can be automatically processed to form a complete box body after extrusion molding. The present application provides an extrusion molding device for a hollow box, comprising: Support base plate; An extruder unit, wherein the extruder unit is fixedly arranged on the top of the supporting bottom plate; An extrusion die, wherein the extrusion die is fixedly arranged on one side of the extrusion unit; A traction mechanism, which is rotatably arranged at the end of the extrusion die, and comprises four traction outer rollers and four traction inner rollers, and is used for traction of the hollow box to move; A cutting mechanism, which is arranged outside the traction mechanism and includes four cutting blades, and the four cutting blades are used to cut the four corners of the hollow box; The cutting mechanism is arranged on the outside of the cutting mechanism, and the cutting mechanism includes four cutting blades, and the four cutting blades are used to cut the hollow box into pieces.

[0007] As an optional solution of the technical solution of the present application document, the extrusion unit includes four extrusion tubes A, the four extrusion tubes A are fixedly arranged on the top of the supporting base plate, and the ends of the four extrusion tubes A are provided with cloth tubes. The extrusion unit also includes an extrusion tube B, the extrusion tube B is fixedly arranged on the top of the supporting base plate, and the end of the extrusion tube B is provided with a cloth plate, and four extrusion grooves are opened on one side of the cloth plate.

[0008] As an optional scheme of the technical scheme of the present application document, the extrusion die includes an outer layer tube, the outer layer tube is fixedly arranged on one side of the extrusion unit, an inner layer tube is arranged inside the outer layer tube, a plurality of square tubes are arranged between the outer layer tube and the inner layer tube, four extrusion channels A are opened on the outside of the outer layer tube, the four extrusion channels A are respectively connected to the corresponding cloth tubes, four extrusion channels B are opened on one side of the inner layer tube, the four extrusion channels B are respectively connected to the corresponding extrusion grooves, a cooling fan is arranged on one side of the cloth plate, a plurality of ventilation holes are opened inside the cloth plate, the plurality of ventilation holes are respectively connected to the corresponding square tubes, and cooling pipes are fixedly arranged on the outside of the outer layer tube and the inside of the inner layer tube.

[0009] As an optional solution of the technical solution of the present application document, the four traction outer rollers are linked by four gear boxes A, one of which is linked to a drive motor A, and the drive motor A is fixedly arranged on the outside of the extrusion die to drive the four traction outer rollers to rotate, and the four traction inner rollers are linked by four gear boxes B, one of which is linked to a drive motor B, and the drive motor B is fixedly arranged on the inside of the extrusion die to drive the four traction inner rollers to rotate.

[0010] As an optional solution to the technical solution of the present application document, a one-way bearing A is provided at the output end of the driving motor A, the inner ring of the one-way bearing A is fixedly arranged with the output end of the driving motor A, the outer ring of the one-way bearing A is fixedly arranged with a gear A, the outer side of the gear A is meshed with a gear B, the inner side of the gear B is fixedly arranged with an input end of a gear box A, a group of pulleys are provided at the output end of the driving motor B, one of the pulleys is linked with the driving motor B through the one-way bearing B, the inner ring of the one-way bearing B is fixedly arranged with the output end of the driving motor B, the outer ring of the one-way bearing B is fixedly arranged with the inner side of the corresponding pulley, a group of the pulleys are meshed with a belt, a transmission rod is fixedly arranged on the inner side of another pulley, and one end of the transmission rod is fixedly arranged with the input end of the corresponding gear box B.

[0011] As an optional solution of the technical solution of the present application document, the cutting mechanism also includes a one-way bearing C, the inner ring of the one-way bearing C is fixedly set to the output end of the driving motor B, the outer ring of the one-way bearing C is fixedly set with a cam, the bottom of the cam is provided with a connecting convex plate, the bottom of the connecting convex plate is fixedly set to two corresponding cutting blades, the top of the connecting convex plate is provided with a connecting plate through two transmission boxes, one side of the two transmission boxes is jointly fixed with a fixed shell, the other side of the fixed shell is fixed to one side of the extrusion mold, the top of the connecting plate is fixed to the other two cutting blades, the top of the connecting plate is fixedly set with two springs A, and the tops of the two springs A are fixed to the inner side of the fixed shell.

[0012] As an optional solution of the technical solution of the present application document, two tooth plates A are provided inside the two transmission boxes, the bottoms of the two tooth plates A are fixed to the top of the connecting convex plate, one side of the two tooth plates A is meshed with a gear C, one side of the two gears C is meshed with a tooth plate B, and the tops of the two tooth plates B are fixed to the bottom of the connecting plate.

[0013] As an optional solution of the technical solution of the present application document, a fixing plate is fixedly provided on one side of the two transmission boxes close to each other, the cam is rotatably arranged on the inner side of the fixing plate, and a spring pin matching the cam is provided on one side of the fixing plate.

[0014] As an optional scheme of the technical scheme of the present application document, the cutting mechanism also includes a fixed frame, which is fixedly arranged on the top of the supporting base plate, and four sliding frames are slidably arranged on the outer side of the fixed frame, and one side of the four sliding frames is respectively fixed to the corresponding cutting blades, and a group of springs C are fixedly arranged on the inner side of the four sliding frames, and one end of the four groups of springs C are fixed to one side of the fixed frame, and one side of the four sliding frames are fixedly arranged with a pin, a bearing ring is fixedly arranged on one side of the fixed frame, and a swivel is rotatably arranged on one side of the bearing ring, and a group of springs B are arranged in an annular array on the outer side of the bearing ring, and one end of a group of springs B are fixed to the outer side of the swivel, and four arc grooves matching the pins are opened on the outer side of the swivel, and an arc rack is arranged on one side of the swivel, and the arc rack is linked with the drive motor A through a transmission structure.

[0015] As an optional solution to the technical solution of the present application document, the transmission structure includes a one-way bearing D, the inner ring of the one-way bearing D is fixedly set to the output end of the driving motor A, and the outer ring of the one-way bearing D is fixedly set with a gear D, and the gear D is meshed with an arc-shaped rack.

[0016] The present application also provides a molding process of the extrusion molding device of the hollow box, comprising the following steps: S1. Extrusion: First, the molten raw material of the inner side of the hollow plate box is extruded into the extrusion die through the extrusion tube B, so that the inner raw material is first distributed to the outside of the inner tube, and then the molten raw material of the outer side of the hollow plate box is extruded into the extrusion die through four extrusion tubes A, so that the outer raw material is distributed to the inside of the outer tube, so that the extrusion of the inner raw material and the outer raw material is completed.

[0017] S2. Shaping: During extrusion, cold air is delivered to the square tube through the heat dissipation fan, which can accelerate the cooling of the extruded raw materials. The heat dissipation pipe can cool the outside and inside of the extrusion mold to accelerate the shaping of the hollow box.

[0018] S3. Cutting: The shaped hollow board box moves under the action of the traction mechanism. When one side of the hollow board box moves to a suitable position, the four cutting blades are driven to extend, and the hollow board box continues to move, so that the four cutting blades cut the four corners of the hollow board box, which is convenient for the subsequent folding of the hollow board box to form a complete box.

[0019] S4, cutting: The cut hollow box stays inside the cutting mechanism, driving four cutting blades to cut the processed hollow box to complete the processing of the hollow box.

[0020] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: (1) The present application adopts a cutting mechanism, which can use four cutting blades to cut the two ends of the processed hollow box body to form a complete box body, thereby effectively solving the problem that the two ends cannot be automatically processed to form a complete box body after extrusion molding, thereby achieving the technical effect that the two ends can be automatically processed to form a complete box body after extrusion molding.

[0021] (2) The present application arranges an extrusion unit on the top of the supporting bottom plate so that four extrusion tubes A and one extrusion tube B can extrude two materials with different functions, and process the outer side and the inner side of the hollow box separately, thereby improving the practicality of the hollow box processed by the equipment and improving the use effect of the equipment.

[0022] (3) The present application can accelerate the shaping of the hollow box, improve the utilization efficiency of the equipment, and thus improve the use effect of the equipment by arranging a heat dissipation fan on one side of the extrusion die and arranging heat dissipation pipes on the inner and outer sides of the extrusion die.

[0023] (4) The present application provides a traction mechanism on one side of the extrusion die, which can drive the shaped hollow box to move, facilitate the next step of cutting and shearing processing, improve the automation effect of the equipment, and improve the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Figure 2 This is a schematic structural diagram of a hollow box extrusion molding device disclosed in a preferred embodiment of the present application after the cutting mechanism is removed; Figure 3 This is a schematic diagram of the structure of an extrusion tube B in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Figure 4 This is a schematic structural diagram of a cloth plate in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Figure 5 This is a schematic diagram of the connection between the extrusion tube A and the cloth plate in the extrusion molding device of the hollow box disclosed in a preferred embodiment of the present application; Figure 6 It is a partial structural schematic diagram of an extrusion die in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Figure 7 It is a schematic cross-sectional structural diagram of an extrusion die in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the middle part A; Fig. 9This is a schematic diagram of the structure of a heat dissipation pipe in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Fig.10 This is a schematic structural diagram of a traction mechanism in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Fig.11 This is a schematic diagram of the connection structure between the driving motor B and the transmission rod of the traction mechanism in the extrusion molding device of the hollow box disclosed in a preferred embodiment of the present application; Fig.12 It is a schematic structural diagram of a cutting mechanism in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Fig.13 This is a schematic diagram of the assembly structure of the tooth plate A, the gear C and the tooth plate B in the extrusion molding device of the hollow plate box disclosed in a preferred embodiment of the present application; Fig.14 This is a schematic diagram of the structure of a spring pin in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Fig.15 It is a structural schematic diagram of a cutting mechanism in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Fig.16 This is a schematic structural diagram of a rotating ring in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Fig.17 This is a schematic structural diagram of a bearing ring in an extrusion molding device for a hollow box disclosed in a preferred embodiment of the present application; Fig.18 It is a structural schematic diagram of a sliding frame in an extrusion molding device for a hollow board box disclosed in a preferred embodiment of the present application; Description of the numbers in the figure: 1. Support the bottom plate; 2. Extrusion unit; 21. Extrusion tube A; 211. Fabric tube; 22. Extrusion tube B; 221. Fabric plate; 2211. Extrusion slot; 2212. Ventilation port; 23. Cooling fan; 3. Extrusion die; 31. Outer tube; 32. Inner tube; 33. Square tube; 34. Extrusion channel A; 35. Extrusion channel B; 36. Heat dissipation tube; 4. Traction mechanism; 41. Traction outer roller; 411. Drive motor A; 4111. One-way bearing A; 4112. Gear A; 4113. Gear B; 412. Gear box A; 42. Traction inner roller; 421. Drive motor B; 4211. One-way bearing B; 4212. Pulley; 4213. Belt; 4214. Transmission rod; 422. Gear box B; 5. Cutting mechanism; 51. Cutting blade; 52. One-way bearing C; 53. Cam; 54. Connecting convex plate; 55. Fixed shell; 56. Transmission box; 561. Tooth plate A; 562. Gear C; 563. Tooth plate B; 57. Connecting plate; 58. Spring A; 59. Fixed plate; 591. Elastic pin; 6. Cutting mechanism; 61. Cutting blade; 62. Transmission structure; 621. One-way bearing D; 622. Gear D; 63. Swivel; 631. Arc groove; 632. Arc rack; 64. Bearing ring; 65. Spring B; 66. Fixed frame; 67. Sliding frame; 68. Pin; 69. Spring C. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings. Reference Figure 1 , Figure 10-Figure 18 The embodiment of the present application discloses an extrusion molding device for a hollow box, including a supporting base plate 1, an extrusion unit 2 is fixedly arranged on the top of the supporting base plate 1, an extrusion mold 3 is fixedly arranged on one side of the extrusion unit 2, a traction mechanism 4 is rotatably arranged at the end of the extrusion mold 3, the traction mechanism 4 includes four traction outer rollers 41 and four traction inner rollers 42, which are used to traction the hollow box to move, a cutting mechanism 5 is arranged on the outside of the traction mechanism 4, the cutting mechanism 5 includes four cutting blades 51, and the four cutting blades 51 are used to cut the four corners of the hollow box, and a cutting mechanism 6 is arranged on the outside of the cutting mechanism 5, the cutting mechanism 6 includes four cutting blades 61, and the four cutting blades 61 are used to cut the hollow box for cutting.

[0026] The equipment extrude the molten raw material through the extruder unit 2, and forms a hollow board box in the extrusion mold 3. The hollow board box moves under the drive of four traction outer rollers 41 and four traction inner rollers 42. When one side of the hollow board box moves to the outside of the cutting blade 51, the four traction outer rollers 41 and the four traction inner rollers 42 stop running, and the four cutting blades 51 are driven to extend. Then, the traction mechanism 4 drives the hollow board box to move, so that the four cutting blades 51 cut the four corners of one side of the hollow board box. After cutting a distance, the four cutting blades 51 are retracted. When the traction mechanism 4 drives the hollow board box to move to a certain position, the driving is stopped, and the four cutting blades 51 are extended and then the hollow board box is driven to move. The four corners on the other side of the hollow board box are cut by the four cutting blades 51, and the cutting process on both sides of a hollow board box is completed. Then, the cutting mechanism 6 is driven to make the four cutting blades 61 cut the hollow board box, and the processing of a hollow board box is completed. The equipment can automatically process both ends of the hollow box after extrusion molding, so as to form a complete box.

[0027] Reference Figure 1-Figure 5The extrusion unit 2 includes four extrusion tubes A21, which are fixedly arranged on the top of the supporting base plate 1, and the ends of the four extrusion tubes A21 are provided with distribution tubes 211. The extrusion unit 2 also includes an extrusion tube B22, which is fixedly arranged on the top of the supporting base plate 1, and the end of the extrusion tube B22 is provided with a distribution plate 221, and four extrusion grooves 2211 are opened on one side of the distribution plate 221.

[0028] The molten outer raw material is extruded through four extrusion tubes A21, and the outer raw material enters the extrusion die 3 through four distribution tubes 211 for shaping. The four distribution tubes 211 can disperse the outer raw material to make the outer raw material of the hollow box more uniform. The molten inner raw material is extruded through the extrusion tube B22, and the inner raw material enters the extrusion die 3 through four extrusion grooves 2211 on the distribution plate 221 for shaping. Through four extrusion tubes A21 and one extrusion tube B22, two materials with inconsistent functions can be extruded, thereby improving the practicality of the hollow box processed by the equipment.

[0029] Reference Figure 1-Figure 8 The extrusion die 3 includes an outer tube 31, which is fixedly arranged on one side of the extruder unit 2. An inner tube 32 is arranged inside the outer tube 31, and a plurality of square tubes 33 are arranged between the outer tube 31 and the inner tube 32. Four extrusion channels A34 are opened on the outer side of the outer tube 31, and the four extrusion channels A34 are respectively connected to the corresponding fabric tubes 211. Four extrusion channels B35 are opened on one side of the inner tube 32, and the four extrusion channels B35 are respectively connected to the corresponding extrusion grooves 2211. A heat dissipation fan 23 is arranged on one side of the fabric plate 221, and a plurality of vents 2212 are opened inside the fabric plate 221, and the plurality of vents 2212 are respectively connected to the corresponding square tubes 33. Heat dissipation pipes 36 are fixedly arranged on the outer side of the outer tube 31 and the inner side of the inner tube 32.

[0030] By using the outer tube 31, the inner tube 32 and the square tube 33 in coordination, the normal use of the hollow box can be ensured. The outer raw material extruded from the cloth tube 211 enters the interior of the extrusion die 3 through the extrusion channel A34. The extrusion channel A34 is subjected to a shrinking treatment to facilitate the extrusion of the raw material into the internal gap of the extrusion die 3. The inner raw material extruded from the extrusion groove 2211 enters the interior of the extrusion die 3 through the extrusion channel B35. While extruding, cold air is transported into the square tube 33 through the heat dissipation fan 23, which can accelerate the cooling of the extruded raw material. The outer and inner sides of the extrusion die 3 can be cooled through the heat dissipation pipe 36, thereby accelerating the shaping of the hollow box.

[0031] Reference Figure 1 and Fig.10 , Fig.11The four traction outer rollers 41 are linked through four gear boxes A412, one of which is linked to a drive motor A411. The drive motor A411 is fixedly arranged on the outside of the extrusion die 3 to drive the four traction outer rollers 41 to rotate. The four traction inner rollers 42 are linked through four gear boxes B422, one of which is linked to a drive motor B421. The drive motor B421 is fixedly arranged on the inside of the extrusion die 3 to drive the four traction inner rollers 42 to rotate.

[0032] A gear box A412 is driven by a driving motor A411, thereby driving four traction outer rollers 41 and other gear boxes A412. A gear box B422 is driven by a driving motor B421, thereby driving four traction inner rollers 42 and other gear boxes B422. The four traction outer rollers 41 and the four traction inner rollers 42 jointly drive the hollow board box to move, which is convenient for the next step of processing.

[0033] Reference Figure 1 , Fig.10 and Fig.11 The output end of the driving motor A411 is provided with a one-way bearing A4111, the inner ring of the one-way bearing A4111 is fixedly provided with the output end of the driving motor A411, the outer ring of the one-way bearing A4111 is fixedly provided with a gear A4112, the outer side of the gear A4112 is meshed with a gear B4113, the inner side of the gear B4113 is fixedly provided with an input end of a gear box A412, and the output end of the driving motor B421 is provided with a group of pulleys 4212, one of which is a pulley 4 212 is linked to the driving motor B421 through the one-way bearing B4211, the inner ring of the one-way bearing B4211 is fixed to the output end of the driving motor B421, the outer ring of the one-way bearing B4211 is fixed to the inner side of the corresponding pulley 4212, a group of pulleys 4212 are meshed with belts 4213 on the outer side, and a transmission rod 4214 is fixed to the inner side of another pulley 4212, and one end of the transmission rod 4214 is fixed to the input end of the corresponding gear box B422.

[0034] By driving the motor A411 to rotate in the forward direction, the one-way effect of the one-way bearing A4111 drives the gear A4112 to rotate, thereby driving the gear B4113 to rotate, causing a gear box A412 to rotate, thereby driving the four traction outer rollers 41 to rotate, and by driving the motor B421 to rotate in the forward direction, the one-way effect of the one-way bearing B4211 drives a group of pulleys 4212 and belts 4213 to rotate, thereby driving the transmission rod 4214 to rotate, thereby causing a gear box B422 to rotate, and driving the four traction inner rollers 42 to rotate, thereby ensuring the linkage between the four traction outer rollers 41 and the driving motor A411, and the linkage between the four traction inner rollers 42 and the driving motor B421.

[0035] Reference Figure 1 , Fig.12 and Fig.13 The cutting mechanism 5 also includes a one-way bearing C52, the inner ring of the one-way bearing C52 is fixedly set to the output end of the driving motor B421, the outer ring of the one-way bearing C52 is fixedly set with a cam 53, the bottom of the cam 53 is provided with a connecting convex plate 54, the bottom of the connecting convex plate 54 is fixedly set to two corresponding cutting blades 51, the top of the connecting convex plate 54 is provided with a connecting plate 57 through two transmission boxes 56, one side of the two transmission boxes 56 is jointly fixedly set with a fixed shell 55, the other side of the fixed shell 55 is fixedly set to one side of the extrusion mold 3, the top of the connecting plate 57 is fixedly set to the other two cutting blades 51, and the top of the connecting plate 57 is fixedly set with two springs A58, and the tops of the two springs A58 are fixedly set to the inner side of the fixed shell 55.

[0036] Under the unidirectional effect of the one-way bearing C52, the reverse operation of the driving motor B421 can drive the cam 53 to rotate, and the rotation of the cam 53 drives the connecting convex plate 54 to move downward, and the connecting convex plate 54 drives the two cutting blades 51 to move downward and extend, and under the action of the transmission box 56, the connecting convex plate 54 drives the connecting plate 57 and the two cutting blades 51 connected thereto to move upward and extend, completing the extension action of the four cutting blades 51. When the driving motor B421 drives the cam 53 to rotate to release the contact with the connecting convex plate 54, the connecting plate 57 and the two cutting blades 51 connected thereto are reset under the elastic effect of the spring A58, and under the action of the transmission box 56, the connecting plate 57 drives the connecting convex plate 54 and the two cutting blades 51 connected thereto to reset.

[0037] Reference Figure 1 , Fig.12 and Fig.13 Two tooth plates A561 are provided inside the two transmission boxes 56. The bottoms of the two tooth plates A561 are fixed to the top of the connecting convex plate 54. One side of the two tooth plates A561 is meshed with a gear C562. One side of the two gears C562 is meshed with a tooth plate B563. The tops of the two tooth plates B563 are fixed to the bottom of the connecting plate 57.

[0038] The movement of the connecting convex plate 54 can drive the two tooth plates A561 to move, the two tooth plates A561 drive the two gears C562 to rotate, and the two gears C562 drive the two tooth plates B563 to move, ensuring the extension of the four cutting blades 51. When resetting, the above steps run in reverse under the elastic action of the spring A58.

[0039] Reference Figure 1 , Figure 12-14A fixing plate 59 is fixedly provided on one side of the two transmission boxes 56 close to each other, the cam 53 is rotatably provided inside the fixing plate 59 , and a spring pin 591 matching the cam 53 is provided on one side of the fixing plate 59 .

[0040] The cam 53 can be fixed by the spring pin 591. When the connecting protruding plate 54 moves to the lowest position, the spring pin 591 can clamp the cam 53 to prevent the cam 53 from deviating and affecting the normal use of the device.

[0041] Reference Figure 1 , Fig.15 , Fig.17 and Fig.18 The cutting mechanism 6 also includes a fixed frame 66, which is fixedly arranged on the top of the supporting base plate 1. Four sliding frames 67 are slidably arranged on the outer side of the fixed frame 66. One side of the four sliding frames 67 is fixedly arranged with the corresponding cutting blades 61 respectively. A group of springs C69 are fixedly arranged on the inner sides of the four sliding frames 67. One end of the four groups of springs C69 are fixedly arranged on one side of the fixed frame 66. One side of the four sliding frames 67 is fixedly arranged with a pin 68. A bearing ring 64 is fixedly arranged on one side of the fixed frame 66. A swivel 63 is rotatably arranged on one side of the bearing ring 64. A group of springs B65 are arranged in an annular array on the outer side of the bearing ring 64. One end of the group of springs B65 is fixedly arranged on the outer side of the swivel 63. Four arc grooves 631 matching the pin 68 are opened on the outer side of the swivel 63. An arc rack 632 is arranged on one side of the swivel 63. The arc rack 632 is linked to the drive motor A411 through the transmission structure 62.

[0042] The transmission structure 62 drives the arc rack 632 to rotate, thereby driving the swivel 63 to rotate. The four arc grooves 631 on the swivel 63 respectively drive the corresponding pins 68 to move. The four pins 68 drive the sliding frame 67 to slide on the fixed frame 66. The four sliding frames 67 drive the four cutting blades 61 to move toward the outside of the hollow box at the same time to cut the hollow box, thereby ensuring the cutting effect of the equipment on the hollow box. The elastic effect of the spring B65 and the spring C69 can drive the cutting mechanism 6 to reset.

[0043] Reference Figure 1 , Fig.15 and Fig.16 The transmission structure 62 includes a one-way bearing D621, the inner ring of the one-way bearing D621 is fixedly arranged with the output end of the driving motor A411, and the outer ring of the one-way bearing D621 is fixedly arranged with a gear D622, and the gear D622 is meshed with the arc-shaped rack 632.

[0044] By driving the motor A411 in reverse, the gear D622 can be driven to rotate under the one-way effect of the one-way bearing D621, thereby driving the arc-shaped rack 632 to rotate, thereby completing the driving effect on the cutting blade 61.

[0045] Reference Figure 1-18 The molding process of the extrusion molding device of the hollow board box includes the following steps: S1. Extrusion: First, the molten inner raw material of the hollow board box is extruded into the extrusion die 3 through the extrusion tube B22, so that the inner raw material is first distributed to the outside of the inner layer tube 32, and then the molten outer raw material of the hollow board box is extruded into the extrusion die 3 through four extrusion tubes A21, so that the outer raw material is distributed to the inside of the outer layer tube 31, and the extrusion of the inner raw material and the outer raw material is completed.

[0046] S2, shaping: During extrusion, cold air is delivered to the square tube 33 through the heat dissipation fan 23, which can accelerate the cooling of the extruded raw material. The outer and inner sides of the extrusion die 3 can be cooled through the heat dissipation pipe 36 to accelerate the shaping of the hollow box.

[0047] S3, cutting: the shaped hollow box moves under the action of the traction mechanism 4. When one side of the hollow box moves to a suitable position, the four cutting blades 51 are driven to extend, and the hollow box continues to move, so that the four cutting blades 51 cut the four corners of the hollow box, which is convenient for the subsequent folding of the hollow box to form a complete box body.

[0048] S4, cutting: the cut hollow box stays inside the cutting mechanism 6, and the four cutting blades 61 are driven to cut the processed hollow box, thereby completing the processing of the hollow box.

[0049] In summary, when the extrusion molding device of the hollow board box disclosed in the embodiment of the present application is used, the molten inner raw material of the hollow board box is first extruded into the extrusion die 3 through the extrusion tube B22, so that the inner raw material is first distributed to the outside of the inner tube 32, and then the molten outer raw material of the hollow board box is extruded into the extrusion die 3 through the four extrusion tubes A21, so that the outer raw material is distributed to the inside of the outer tube 31, so that the inner raw material and the outer raw material are extruded. At the same time of extrusion, the cooling air is transported into the square tube 33 through the heat dissipation fan 23, which can accelerate the cooling of the extruded raw material. The outer and inner sides of the extrusion die 3 can be cooled through the heat dissipation pipe 36, so as to accelerate the shaping of the hollow board box. By driving the motor A411 to run in the forward direction, under the unidirectional effect of the one-way bearing A4111, The gear A4112 is driven to rotate, thereby driving the gear B4113 to rotate, making a gear box A412 operate, thereby driving the four traction outer rollers 41 to operate, and driving the motor B421 to operate in the forward direction. Under the one-way effect of the one-way bearing B4211, a group of pulleys 4212 and belts 4213 are driven to operate, thereby driving the transmission rod 4214 to rotate, thereby making a gear box B422 operate, driving the four traction inner rollers 42 to operate, and the shaped hollow box moves under the action of the four traction outer rollers 41 and the four traction inner rollers 42. When one side of the hollow box moves to the outside of the cutting blade 51, the four traction outer rollers 41 and the four traction inner rollers 42 stop running, and under the one-way effect of the one-way bearing C52, the driving motor B The reverse operation of 421 can drive the cam 53 to rotate, and the rotation of the cam 53 drives the connecting convex plate 54 to move downward, and the connecting convex plate 54 drives the two cutting blades 51 to move downward and extend, and the connecting convex plate 54, under the action of the transmission box 56, drives the connecting plate 57 and the two cutting blades 51 connected thereto to move upward and extend, completing the extension action of the four cutting blades 51, and then the traction mechanism 4 drives the hollow board box to move, so that the four cutting blades 51 cut the four corners of one side of the hollow board box. After cutting a certain distance, the driving motor B421 is reversely operated to drive the cam 53 to rotate to release the contact with the connecting convex plate 54, and the four cutting blades 51 shrink and reset under the elastic effect of the spring A58, and then the traction mechanism 4 drives the hollow board box to move to a certain position and stops. The drive is stopped, so that the four cutting blades 51 are extended and then the hollow box is driven to move, and the four corners of the other side of the hollow box are cut by the four cutting blades 51 to complete the cutting process on both sides of a hollow box, and then the transmission structure 62 drives the arc rack 632 to rotate, thereby driving the swivel 63 to rotate, and the four arc grooves 631 on the swivel 63 respectively drive the corresponding pins 68 to move, and the four pins 68 drive the sliding frame 67 to slide on the fixed frame 66, and the four sliding frames 67 drive the four cutting blades 61 to move to the outside of the hollow box at the same time to cut the hollow box, so that the four cutting blades 61 cut the hollow box to complete the processing of a hollow box, and the equipment can automatically process both ends of the hollow box after extrusion molding.It is convenient to form a complete box body and complete the processing of hollow board boxes.

Claims

1. A hollow box extrusion molding device, characterized in that: include: A supporting base plate (1); An extruder unit (2), the extruder unit (2) being arranged on top of the supporting base plate (1); An extrusion die (3), wherein the extrusion die (3) is arranged on a discharge side of the extruder unit (2); A traction mechanism (4), the traction mechanism (4) being rotatably arranged at the end of the extrusion die (3), the traction mechanism (4) comprising four traction outer rollers (41) and four traction inner rollers (42), and being used for traction and movement of the hollow plate box after extrusion molding; A cutting mechanism (5), the cutting mechanism (5) being arranged outside the traction mechanism (4), the cutting mechanism (5) comprising four cutting blades (51), the four cutting blades (51) being used for cutting the four corners of the hollow box; A cutting mechanism (6), the cutting mechanism (6) being arranged outside the cutting mechanism (5), the cutting mechanism (6) comprising four cutting blades (61), the four cutting blades (61) being used to cut the hollow box into blanks; The extruder unit (2) comprises four extrusion tubes A (21), the four extrusion tubes A (21) are all arranged on the top of the supporting bottom plate (1), and the extrusion ends of the four extrusion tubes A (21) are all provided with a distribution tube (211); The extruder unit (2) further comprises an extrusion tube B (22), wherein the extrusion tube B (22) is arranged on the top of the supporting bottom plate (1), and a material distribution plate (221) is arranged at the extrusion end of the extrusion tube B (22), and an extrusion groove (2211) is arranged on the inner side of the material distribution plate (221).

2. The hollow box extrusion molding device according to claim 1, characterized in that: The extrusion die (3) comprises an outer layer tube (31), and the outer layer tube (31) is arranged on a discharge side of the extruder unit (2); An inner tube (32) is arranged inside the outer tube (31), and a plurality of square tubes (33) are arranged between the outer tube (31) and the inner tube (32); Four extrusion channels A (34) are provided on the outer side of the outer layer tube (31), and the four extrusion channels A (34) are respectively connected to corresponding material distribution tubes (211); Four extrusion channels B (35) are provided on one side of the inner layer tube (32), and the four extrusion channels B (35) are respectively connected to corresponding extrusion grooves (2211); A heat dissipation fan (23) is provided on one side of the material distribution plate (221), a plurality of ventilation openings (2212) are provided inside the material distribution plate (221), the plurality of ventilation openings (2212) are respectively connected to corresponding square tubes (33), and heat dissipation pipes (36) are fixedly provided on the outer side of the outer layer tube (31) and the inner side of the inner layer tube (32).

3. The extrusion molding device for a hollow box according to claim 1, characterized in that: The four traction outer rollers (41) are linked via four gear boxes A (412), one of the gear boxes A (412) being linked to a drive motor A (411), the drive motor A (411) being arranged outside the extrusion die (3) and used for driving the four traction outer rollers (41) to rotate; The four traction inner rollers (42) are linked via four gear boxes B (422), one of the gear boxes B (422) being linked to a drive motor B (421), the drive motor B (421) being fixedly arranged on the inner side of the extrusion die (3) and used for driving the four traction inner rollers (42) to rotate.

4. The extrusion molding device for a hollow box according to claim 3, characterized in that: A one-way bearing A (4111) is provided at the output end of the driving motor A (411), and an inner ring of the one-way bearing A (4111) is fixedly arranged with the output end of the driving motor A (411); The outer ring of the one-way bearing A (4111) is fixedly provided with a gear A (4112), the outer side of the gear A (4112) is meshed with a gear B (4113), and the inner side of the gear B (4113) is fixedly provided with an input end of a gear box A (412); A group of pulleys (4212) are provided at the output end of the driving motor B (421), wherein one of the pulleys (4212) is linked to the driving motor B (421) via a one-way bearing B (4211), an inner ring of the one-way bearing B (4211) is fixedly arranged at the output end of the driving motor B (421), and an outer ring of the one-way bearing B (4211) is fixedly arranged at the inner side of the corresponding pulley (4212); A belt (4213) is meshedly arranged on the outer side of one group of pulleys (4212), and a transmission rod (4214) is fixedly arranged on the inner side of another pulley (4212), and one end of the transmission rod (4214) is fixedly arranged on the input end of the corresponding gear box B (422).

5. The extrusion molding device for a hollow board box according to claim 3, characterized in that: The cutting mechanism (5) further comprises a one-way bearing C (52), the inner ring of the one-way bearing C (52) being fixedly arranged on the output end of the driving motor B (421), and the outer ring of the one-way bearing C (52) being fixedly arranged with a cam (53); A connecting convex plate (54) is provided at the bottom of the cam (53), the bottom of the connecting convex plate (54) is connected to two corresponding cutting blades (51), and a connecting plate (57) is provided at the top of the connecting convex plate (54) via two transmission boxes (56); One side of the two transmission boxes (56) is commonly connected to a fixed shell (55), the other side of the fixed shell (55) is connected to one side of the extrusion die (3), and the top of the connecting plate (57) is connected to the other two cutting blades (51); Two springs A (58) are connected to the top of the connecting plate (57), and the tops of the two springs A (58) are connected to the inner side of the fixed shell (55).

6. The extrusion molding device for a hollow box according to claim 5, characterized in that: Two tooth plates A (561) are disposed inside the two transmission boxes (56), and the bottoms of the two tooth plates A (561) are connected to the top of the connecting convex plate (54); One side of the two toothed plates A (561) is meshed with a gear C (562), one side of the two gears C (562) is meshed with a toothed plate B (563), and the tops of the two toothed plates B (563) are connected to the bottom of the connecting plate (57).

7. The extrusion molding device for a hollow box according to claim 5, characterized in that: A fixing plate (59) is commonly connected to one side of the two transmission boxes (56) that are close to each other; The cam (53) is rotatably arranged inside the fixing plate (59), and a spring pin (591) matching the cam (53) is arranged on one side of the fixing plate (59).

8. The extrusion molding device for a hollow box according to claim 3, characterized in that: The cutting mechanism (6) further comprises a fixing frame (66), wherein the fixing frame (66) is arranged on the top of the supporting bottom plate (1); Four sliding frames (67) are slidably disposed on the outer side of the fixed frame (66), and one side of the four sliding frames (67) is respectively connected to a corresponding cutting blade (61); A group of springs C (69) are provided on the inner sides of the four sliding frames (67), and one end of the four groups of springs C (69) is connected to one side of the fixed frame (66); A pin (68) is provided on one side of each of the four sliding frames (67); a bearing ring (64) is fixedly provided on one side of the fixed frame (66); and a swivel (63) is rotatably provided on one side of the bearing ring (64); A group of springs B (65) is provided in an annular array on the outer side of the bearing ring (64), and one end of each group of springs B (65) is connected to the outer side of the rotating ring (63); Four arc-shaped grooves (631) matching the pins (68) are formed on the outer side of the rotating ring (63), and an arc-shaped rack (632) is provided on one side of the rotating ring (63). The arc-shaped rack (632) is linked to the driving motor A (411) through the transmission structure (62).

9. The extrusion molding device for a hollow box according to claim 8, characterized in that: The transmission structure (62) comprises a one-way bearing D (621), the inner ring of the one-way bearing D (621) being connected to the output end of the drive motor A (411), the outer ring of the one-way bearing D (621) being connected to a gear D (622), and the gear D (622) being meshed with an arc-shaped rack (632).

10. The molding process of the extrusion molding device for a hollow box according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, extrusion: first, the molten raw material of the inner side of the hollow plate box is extruded into the extrusion die (3) through the extrusion tube B (22), so that the inner raw material is first distributed to the outside of the inner layer tube (32), and then the molten raw material of the outer side of the hollow plate box is extruded into the extrusion die (3) through the four extrusion tubes A (21), so that the outer raw material is distributed to the inside of the outer layer tube (31), so that the extrusion of the inner raw material and the outer raw material is completed; S2, shaping: During extrusion, cold air is delivered to the square tube (33) through the heat dissipation fan (23), thereby accelerating the cooling of the extruded raw material, and the outer side and the inner side of the extrusion die (3) are cooled through the heat dissipation pipe (36), thereby accelerating the shaping of the hollow box; S3, cutting: the shaped hollow box moves under the action of the traction mechanism (4), and when one side of the hollow box moves to a suitable position, the four cutting blades (51) are driven to extend, and the hollow box continues to move, so that the four cutting blades (51) cut the four corners of the hollow box, which facilitates the subsequent folding of the hollow box to form a complete box body; S4, cutting: the cut hollow box stays inside the cutting mechanism (6), and the four cutting blades (61) are driven to cut the processed hollow box, thereby completing the processing of the hollow box.

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