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

Abstract

The utility model 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 present application relates to the technical field of extrusion die, in particular to a double-color special-shaped hollow die provided with a blowing device. BACKGROUND

[0002] Hollow lattice plates are commonly used in construction, decoration or other applications requiring lightweight and high-strength materials. A double-color special-shaped hollow lattice die is a mold for producing double-color special-shaped hollow lattice plates, which allows the injection of colored plastic and, through the design of the die, the final product has a double-color or multi-level appearance.

[0003] At present, the air inlet of the blowing device of the conventional hollow die is arranged at the bottom of the die core. This structure has the following technical defects: 1. This design requires a relatively high space, and requires that the bottom of the die core has no other structural design, which is suitable for simple die core structures. The die body also needs to be provided with a hole for avoiding the gas rod, which is easy to interfere with the fastening screws or heating pipe holes on the die body. 2. Mostly, a single flowmeter is arranged, which leads to small air pressure on the side far from the flowmeter. 3. The air inlet pipe is installed at the bottom of the die on the feeding side, which leads to difficult installation and unattractive appearance of the distributor. SUMMARY

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

[0005] The technical scheme of the present application is a double-color special-shaped hollow die head provided with a blowing device, comprising a die body and side plates located at 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 feeding channel is formed between the upper die and the upper middle die, a second feeding channel is formed between the upper middle die and the lower middle die, and a third feeding channel is formed between the lower middle die and the lower die; an upper die lip is connected to the front end of the upper die; a lower die lip is connected to the front end of the lower die; a die core is connected to the front end faces of the upper middle die and the lower middle die; an upper extrusion channel in communication with the first feeding channel is arranged between the upper die lip and the die core; a lower extrusion channel in communication with the third feeding channel is arranged between the lower die lip and the die core; a first extrusion channel located at the upper side and a second extrusion channel located at the lower side are arranged in the die core; the rear ends of the first extrusion channel and the second extrusion channel are in communication with the second feeding channel; a series of vertical feeding grooves are further arranged in the die core, and the vertical feeding grooves are in communication with the upper extrusion channel and the lower extrusion channel; a primary color raw material is extruded from the upper extrusion channel and the lower extrusion channel to form a top layer and a bottom layer of horizontal thin-walled plates; a colored raw material is extruded from the first extrusion channel and the second extrusion channel to form two layers of colored horizontal thin-walled plates; and the primary color raw material is extruded from the vertical feeding grooves to form vertical ribs for supporting the horizontal thin-walled plates; three gas holes are arranged in the die core along the width direction; a gas pipe is arranged in the gas holes; the three gas holes respectively extend forward to form independent gas channels; 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 two vertical feeding grooves; a series of blowing holes are arranged on the front side of the gas pipe along the length direction, and the positions of the blowing holes correspond to the positions of the gas channels; and gas source equipment is connected to the left and right ends of the gas pipe.

[0006] Preferably, the gas source equipment comprises a support plate connected to the side plates through support rods, a gas tank and a flow meter are connected to the support plate, an adjusting valve assembly is arranged at the flow meter, the gas tank is connected to a gas pump, and the gas tank, the flow meter and the gas pipe are in communication through copper pipes.

[0007] Preferably, the front side of the gas pipe is provided with two rows of upper and lower blowing holes, and the diameters of the blowing holes in the left and right regions of the gas pipe are smaller than the diameter of the blowing hole in the middle region.

[0008] The present application ensures that the air pressure of each part of the die core is uniform, so that the hollow lattice part in the middle of the double-color special-shaped hollow lattice plate is smoothly formed, and the extrusion quality of the product is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The figure is a structural schematic diagram of the present application.

[0010] Figure 2 The figure is a structural schematic diagram of the present application. Figure 1Structure diagram of another perspective view;

[0011] Figure 3 Structure diagram of internal cross section of the present application;

[0012] Figure 4 Structure diagram of connection of the present application's mold core, lower mold lip, air pipe and air source equipment;

[0013] Figure 5 Structure diagram of internal gas passage of the present application's mold core;

[0014] Figure 6 Structure diagram of the present application's air pipe;

[0015] Wherein; 1 - mold body; 101 - upper mold; 102 - upper middle mold; 103 - lower middle mold; 104 - lower mold; 105 - first feeding passage; 106 - second feeding passage; 107 - third feeding passage; 108 - upper mold lip; 109 - lower mold lip; 110 - mold core; 111 - upper extrusion passage; 112 - lower extrusion passage; 113 - first extrusion passage; 114 - second extrusion passage; 115 - vertical feeding groove; 116 - air hole; 117 - gas passage; 2 - side plate; 3 - air pipe; 31 - air blowing hole; 4 - air source equipment; 41 - support rod; 42 - support plate; 43 - air tank; 44 - flow meter; 45 - adjusting valve assembly; 46 - copper pipe. DETAILED DESCRIPTION

[0016] The present application will be further described in detail below with reference to the accompanying drawings.

[0017] As Figures 1 to 6The present application provides a double-color special-shaped hollow die head provided with a blowing device, which comprises 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 comprises an upper die 101, an upper middle die 102, a lower middle die 103 and a lower die 104. A first feeding channel 105 is formed between the upper die 101 and the upper middle die 102. A second feeding channel 106 is formed between the upper middle die 102 and the lower middle die 103. A third feeding 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 with an upper die lip 108. The front end of the lower die 104 is connected with a lower die lip 109. The front end faces of the upper middle die 102 and the lower middle die 103 are connected with a die core 110. An upper extrusion channel 111 communicating with the first feeding channel 105 is arranged between the upper die lip 108 and the die core 110. A lower extrusion channel 112 communicating with the third feeding channel 107 is arranged between the lower die lip 109 and the die core 110. The die core 110 is internally provided with a first extrusion channel 113 located on the upper side and a second extrusion channel 114 located on the lower side. The rear ends of the first extrusion channel 113 and the second extrusion channel 114 communicate with the second feeding channel 106. A series of vertical feeding grooves 115 are further arranged in the die core 110. The vertical feeding grooves 115 communicate with the upper extrusion channel 111 and the lower extrusion channel 112. Primary color raw materials are extruded from the upper extrusion channel 111 and the lower extrusion channel 112 to form top layer and bottom layer horizontal thin-walled plates. Colored raw materials are extruded from the first extrusion channel 113 and the second extrusion channel 114 to form intermediate upper and lower two layers of colored horizontal thin-walled plates. The primary color raw materials are extruded from the vertical feeding grooves 115 to form vertical ribs for supporting the horizontal thin-walled plates. Three gas holes 116 are arranged in the die core 110 along the width direction. A gas pipe 3 is arranged in the gas holes 116. The three gas 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 feeding grooves 115. A series of blowing holes 31 are arranged on the front side of the gas pipe 3 along the length direction. The positions of the blowing holes 31 correspond to the positions of the gas channels 117. The left and right ends of the gas pipe 3 are respectively connected with gas source equipment 4.

[0018] In the above scheme, the gas source equipment 4 comprises a support plate 42 connected to the side plates 2 through support rods 41. A gas tank 43 and a flow meter 44 are connected to the support plate 42. An adjusting valve assembly 45 is arranged at the flow meter 44. The gas tank 43 is connected to a gas pump. The gas tank 43, the flow meter 44 and the gas pipe 3 are communicated through copper pipes 46.

[0019] In addition, the front side of the air pipe 3 is provided with two rows of air holes 31, and the diameter of the air holes 31 in the left and right areas of the air pipe 3 is smaller than the diameter of the air holes 31 in the middle area.

[0020] This invention divides the mold core 110 into several square areas by intersecting the upper extrusion channel 111, the first extrusion channel 113, the second extrusion channel 114, the lower extrusion channel 112, and the vertical feed groove 115. A series of gas channels 117 are connected to each of these square areas. When the primary and secondary raw materials are extruded from the front end of the mold core 110, the gas source devices 4 on the left and right sides of the mold body 1 precisely control the gas flow and pressure by controlling the regulating valve assembly 45 in conjunction with the flow meter 44. After the gas enters the gas pipe 3, it enters the gas channel 117 through the blowing hole 31 and is blown out in this series of square areas to quickly cool each grid in the hollow square plate, so that the product can be quickly shaped.

[0021] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A two-color irregular hollow mold head equipped with an air blowing device, comprising a mold body (1) and side plates (2) located on the left and right outer sides of the mold body (1), characterized in that: The mold body (1) includes an upper mold (101), an upper middle mold (102), a lower middle mold (103), and a lower mold (104). A first feeding channel (105) is formed between the upper mold (101) and the upper middle mold (102), a second feeding channel (106) is formed between the upper middle mold (102) and the lower middle mold (103), and a third feeding channel (107) is formed between the lower middle mold (103) and the lower mold (104). An upper mold lip (108) is connected to the front end of the upper mold (101), a lower mold lip (109) is connected to the front end of the lower mold (104), and a mold core (110) is connected to the front end faces of the upper middle mold (102) and the lower middle mold (103). 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 inside 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). A series of vertical feed grooves (115) are also provided inside 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 the top and bottom horizontal thin-walled plates, and the colored raw material is extruded from the first extrusion channel (113) and the second extrusion channel (114) to form the middle upper and lower colored horizontal thin-walled plates. The primary color raw material is extruded from the vertical feed trough (115) to form vertical ribs to support the above-mentioned horizontal thin-walled plates; the mold core (110) is provided with three air holes (116) running through it along the width direction, and air pipes (3) are provided in the air holes (116). Each gas channel (117) extends forward independently. The front ends of the three gas channels (117) are 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), respectively. Each gas channel (117) is located between two vertical feed troughs (115). A series of air blowing holes (31) are provided on the front side of the air pipe (3) along the length direction. The positions of the air blowing holes (31) correspond to the gas channels (117). The left and right ends of the air pipe (3) are respectively connected to the air source device (4).

2. A two-color irregular hollow mold head with an air blowing device according to claim 1, characterized in that: The gas source device (4) includes a support plate (42) connected to the side plate (2) by 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 the air pump. The gas tank (43), the flow meter (44), and the air pipe (3) are connected by a copper pipe (46).

3. A two-color irregular hollow mold head with an air blowing device according to claim 1, characterized in that: The front side of the air pipe (3) is provided with two rows of air holes (31), and the diameter of the air holes (31) in the left and right areas of the air pipe (3) is smaller than the diameter of the air holes (31) in the middle area.

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