Double-color special-shaped hollow die head provided with air blowing device

Abstract

The invention provides a double-color special-shaped hollow die head provided with an air blowing device, which comprises an upper die, an upper middle die, a lower middle die, a lower die, an upper die lip, a lower die lip, a first feeding channel, a second feeding channel, a third feeding channel, a die core, an upper extrusion channel and a lower extrusion channel, the vertical feeding groove is communicated with the upper extrusion channel and the lower extrusion channel; an upper air hole, a middle air hole and a lower air hole are formed in the mold core in a penetrating mode in the breadth direction, air pipes are arranged in the air holes, the three air holes extend forwards to form independent air channels respectively, a series of air blowing holes are formed in the front side face of each air pipe in the length direction, the positions of the air blowing holes correspond to the air channels, and the left end and the right end of each air pipe are externally connected with air source equipment respectively. The air inlet pressure of all parts of the mold core is uniform, so that the hollow grid part in the middle of the double-color special-shaped hollow grid plate is smoothly formed, and the extrusion quality of a product is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of extrusion die heads, in particular to a double-color special-shaped hollow die head provided with an air blowing device. Background Art

[0002] Hollow lattice panels are usually used in construction, decoration or other applications that require lightweight and high strength materials. The two-color special-shaped hollow lattice panel die is a mold used to produce two-color special-shaped hollow lattice panels. It allows the injection of plastic containing color. Through the design of the die, the final product has a two-color or multi-layered appearance.

[0003] At present, the air inlet of the blowing device of the conventional hollow die head is set at the bottom of the mold core. This structure has the following technical defects: 1. This design has high space requirements and requires no other structural design at the bottom of the mold core. It is suitable for simple mold core structures. The mold body also needs to be provided with an avoidance hole for the gas rod, which is easy to interfere with the fastening screws or heating pipe holes on the mold body. 2. Most of them are equipped with a single-side flow meter, resulting in low air pressure on the side away from the flow meter. 3. The air inlet pipe is installed on the feeding side of the bottom of the die head, which makes the distributor difficult to install and unsightly. Summary of the invention

[0004] In view of the above problems, the present invention aims to provide a two-color special-shaped hollow die head provided with a blowing device to ensure uniform air pressure in each part of the die core and ensure the extrusion quality of the product.

[0005] The technical solution of the present invention is a two-color special-shaped hollow die head with a blowing device, comprising a die body and side plates located on the left and right outer sides of the die body, characterized in that: the die body comprises an upper die, an upper middle die, a lower middle die and a lower die, a first feed channel is formed between the upper die and the upper middle die, a second feed channel is formed between the upper middle die and the lower middle die, and a third feed channel is formed between the lower middle die and the lower die, the front end of the upper die is connected with an upper die lip, the front end of the lower die is connected with a lower die lip, the front end surfaces of the upper middle die and the lower middle die are connected with a die core, an upper extrusion channel connected to the first feed channel is arranged between the upper die lip and the die core, a lower extrusion channel connected to the third feed channel is arranged between the lower die lip and the die core, a first extrusion channel located on the upper side and a second extrusion channel located on the lower side are arranged in the die core, the rear ends of the first extrusion channel and the second extrusion channel are connected to the second feed channel, a series of vertical feed grooves are also arranged in the die core, The vertical feed trough is connected with the upper extrusion channel and the lower extrusion channel; the primary color raw materials are extruded from the upper extrusion channel and the lower extrusion channel to form top and bottom layers of transverse thin-walled plates, and the colored raw materials are extruded from the first extrusion channel and the second extrusion channel to form two layers of colored transverse thin-walled plates in the middle, and the primary color raw materials are extruded from the vertical feed trough to form vertical ribs to support the above-mentioned transverse thin-walled plates; three air holes are arranged on the mold core along the width direction, and air pipes are arranged in the air holes. The three air holes extend forward to form independent gas channels respectively. The front ends of the three gas channels are respectively located between the upper extrusion channel and the first extrusion channel, between the first extrusion channel and the second extrusion channel, and between the second extrusion channel and the lower extrusion channel. Each gas channel is located between the two vertical feed troughs. A series of blowing holes are arranged on the front side of the air pipe along the length direction. The positions of the blowing holes correspond to the gas channels. The left and right ends of the air pipe are respectively connected to external air source equipment.

[0006] Preferably, the gas source equipment includes a support plate connected to the side plate through a support rod, a gas tank and a flow meter are connected to the support plate, a regulating valve assembly is provided at the flow meter, the gas tank is connected to an air pump, and the gas tank, flow meter and air pipe are connected through a copper tube.

[0007] Preferably, two rows of upper and lower air holes are provided on the front side of the air pipe, and the diameters of the air holes in the left and right areas of the air pipe are smaller than the diameter of the air holes in the middle area.

[0008] The invention ensures that the air pressure of each part of the mold core is uniform, so that the hollow grid part in the middle of the double-color special-shaped hollow grid plate is smoothly formed and the extrusion quality of the product is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure from another perspective; Figure 3 It is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the connection structure of the mold core, the lower mold lip, the air pipe, and the air source equipment of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the internal gas passage of the mold core of the present invention; Figure 6 It is a schematic diagram of the structure of the trachea in the present invention; Among them; 1—mold body; 101—upper mold; 102—upper middle mold; 103—lower middle mold; 104—lower mold; 105—first feed channel; 106—second feed channel; 107—third feed channel; 108—upper mold lip; 109—lower mold lip; 110—mold core; 111—upper extrusion channel; 112—lower extrusion channel; 113—first extrusion channel; 114—second extrusion channel; 115—vertical feed trough; 116—air hole; 117—gas channel; 2—side plate; 3—air pipe; 31—blowing hole; 4—gas source equipment; 41—support rod; 42—support plate; 43—gas tank; 44—flow meter; 45—regulating valve assembly; 46—copper tube. DETAILED DESCRIPTION

[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0011] like Figures 1 to 6As shown, the present invention provides a double-color special-shaped hollow die head with a blowing device, comprising a die body 1 and side plates 2 located on the left and right outer sides of the die body 1, the die body 1 comprising an upper die 101, an upper middle die 102, a lower middle die 103 and a lower die 104, a first feed channel 105 is formed between the upper die 101 and the upper middle die 102, a second feed channel 106 is formed between the upper middle die 102 and the lower middle die 103, and a third feed channel 107 is formed between the lower middle die 103 and the lower die 104, the front end of the upper die 101 is connected to an upper die lip 108, the front end of the lower die 104 is connected to a lower die lip 109, The front end surfaces of the upper middle die 102 and the lower middle die 103 are connected to a die core 110, an upper extrusion channel 111 communicating with the first feed channel 105 is arranged between the upper die lip 108 and the die core 110, a lower extrusion channel 112 communicating with the third feed channel 107 is arranged between the lower die lip 109 and the die core 110, a first extrusion channel 113 located on the upper side and a second extrusion channel 114 located on the lower side are arranged in the die core 110, the rear ends of the first extrusion channel 113 and the second extrusion channel 114 are connected to the second feed channel 106, and a A series of vertical feed slots 115 are arranged, and the vertical feed slots 115 are connected with the upper extrusion channel 111 and the lower extrusion channel 112; the primary color raw materials are extruded from the upper extrusion channel 111 and the lower extrusion channel 112 to form the top layer and the bottom layer of transverse thin-walled plates, and the colored raw materials are extruded from the first extrusion channel 113 and the second extrusion channel 114 to form the middle upper and lower layers of colored transverse thin-walled plates, and the primary color raw materials are extruded from the vertical feed slots 115 to form vertical ribs to support the above-mentioned transverse thin-walled plates; the mold core 110 is provided with three upper, middle and lower air holes 116 penetrating along the width direction, and the air holes 116 are provided with The air pipe 3, the three air holes 116 respectively extend forward to form independent gas channels 117, the front ends of the three gas channels 117 are respectively located between the upper extrusion channel 111 and the first extrusion channel 113, between the first extrusion channel 113 and the second extrusion channel 114, and between the second extrusion channel 114 and the lower extrusion channel 112, each gas channel 117 is located between two vertical feed grooves 115, and a series of blowing holes 31 are arranged on the front side of the air pipe 3 along the length direction, and the positions of the blowing holes 31 correspond to the gas channels 117, and the left and right ends of the air pipe 3 are respectively connected to the external gas source device 4.

[0012] In the above scheme, the gas source equipment 4 includes a support plate 42 connected to the side plate 2 through a support rod 41, and a gas tank 43 and a flow meter 44 are connected to the support plate 42. A regulating valve assembly 45 is provided at the flow meter 44. The gas tank 43 is connected to an air pump, and the gas tank 43, the flow meter 44, and the air pipe 3 are connected through a copper tube 46.

[0013] In addition, two rows of blowing holes 31 are arranged on the front side of the air pipe 3 , and the diameters of the blowing holes 31 in the left and right areas of the air pipe 3 are smaller than those in the middle area.

[0014] The present invention cuts the mold core 110 into a plurality of square areas by crossing the upper extrusion channel 111, the first extrusion channel 113, the second extrusion channel 114, the lower extrusion channel 112, and the vertical feed trough 115. A series of gas channels 117 are respectively connected to the square areas. When the primary color raw material and the colored raw material are extruded from the front end of the mold core 110, the gas source equipment 4 on the left and right sides of the mold body 1 accurately controls the gas flow and pressure by controlling the regulating valve assembly 45 and reading the flow meter 44. After the gas enters the air pipe 3, it enters the gas channel 117 through the blowing hole 31 and is blown out in this series of square areas, so that each grid in the hollow grid plate is quickly cooled, so that the product is quickly formed.

[0015] The above description is only a preferred embodiment of the present invention and does not limit the invention in any form. Any simple modification, equivalent change or modification made to the above embodiments based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A two-color special-shaped hollow die head provided with a blowing device, comprising a die body (1) and side plates (2) located on the left and right outer sides of the die body (1), characterized in that: The mold body (1) comprises an upper mold (101), an upper middle mold (102), a lower middle mold (103) and a lower mold (104); a first feed channel (105) is formed between the upper mold (101) and the upper middle mold (102); a second feed channel (106) is formed between the upper middle mold (102) and the lower middle mold (103); and a third feed channel (107) is formed between the lower middle mold (103) and the lower mold (104); the front end of the upper mold (101) is connected to an upper mold lip (108); the front end of the lower mold (104) is connected to a lower mold lip (109); and the front end surfaces of the upper middle mold (102) and the lower middle mold (103) are connected to a mold core (110). An upper extrusion channel (111) communicating with the first feed channel (105) is provided between the upper die lip (108) and the die core (110); a lower extrusion channel (112) communicating with the third feed channel (107) is provided between the lower die lip (109) and the die core (110); a first extrusion channel (113) located on the upper side and a second extrusion channel (114) located on the lower side are provided in the die core (110); rear ends of the first extrusion channel (113) and the second extrusion channel (114) are connected to the second feed channel (106); a series of vertical feed grooves (115) are also provided in the die core (110); The vertical feed trough (115) is connected to the upper extrusion channel (111) and the lower extrusion channel (112); the primary color raw material is extruded from the upper extrusion channel (111) and the lower extrusion channel (112) to form top and bottom transverse thin-walled plates; the colored raw material is extruded from the first extrusion channel (113) and the second extrusion channel (114) to form two layers of colored transverse thin-walled plates in the middle, and the primary color raw material is extruded from the vertical feed trough (115) to form vertical ribs for supporting the transverse thin-walled plates; the mold core (110) is provided with three upper, middle and lower air holes (116) penetrating along the width direction; the air holes (116) are provided with air pipes (3); the three air holes (116) Independent gas channels (117) are extended forward respectively, and the front ends of the three gas channels (117) are respectively located between the upper extrusion channel (111) and the first extrusion channel (113), between the first extrusion channel (113) and the second extrusion channel (114), and between the second extrusion channel (114) and the lower extrusion channel (112). Each gas channel (117) is located between two vertical feed slots (115). A series of blowing holes (31) are arranged on the front side of the air pipe (3) along the length direction. The positions of the blowing holes (31) correspond to the gas channels (117). The left and right ends of the air pipe (3) are respectively connected to an external gas source device (4).

2. A two-color special-shaped hollow die head with a blowing device according to claim 1, characterized in that: The gas source device (4) comprises a support plate (42) connected to the side plate (2) via a support rod (41); a gas tank (43) and a flow meter (44) are connected to the support plate (42); a regulating valve assembly (45) is provided at the flow meter (44); the gas tank (43) is connected to an air pump; and the gas tank (43), the flow meter (44) and the gas pipe (3) are connected via a copper pipe (46).

3. A two-color special-shaped hollow die head with a blowing device according to claim 1, characterized in that: The front side of the air pipe (3) is provided with two upper and lower rows of air blowing holes (31), and the diameters of the air blowing holes (31) in the left and right regions of the air pipe (3) are smaller than the diameter of the air blowing holes (31) in the middle region.

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