Extrusion device

Abstract

The utility model relates to the technical field of ceramic tile green body preparation devices, in particular to an extrusion device. The extrusion device comprises a discharging die orifice, a twisting shell, a feeding shell, a sealing seat and a driving mechanism which are connected in sequence; the device further comprises an auger rod, and the auger rod is located in the twisting shell and the feeding shell. The auger rod comprises a twisting shaft and a spiral blade arranged on the twisting shaft; the feeding end of the twisting shaft is connected with a transmission shaft; the transmission shaft penetrates through the sealing seat and is connected with a driving mechanism; a conical twisting cavity is formed in the twisting shell; and the radius of the spiral blade in the conical twisting cavity is gradually reduced. The extrusion device can be used for preparing ceramic plates and particles with the texture effect, the texture on a product is good in fineness and high in definition, and the compactness of the product is good.

Description

Technical Field

[0001] The utility model relates to the technical field of tile blank preparation devices, and particularly relates to an extrusion device. Background Art

[0002] With the improvement of people's living standards, people's pursuit of beauty has become stronger. Among tile products, in addition to the common marble-like tiles being deeply loved by customers, some textured tiles are also favored by people.

[0003] The texture effect of textured tiles is generally formed by the blank material or by the blank material and texture particles. When producing tiles or particles with a texture effect, ceramic presses or granulators are usually used for pressing, or an extruder is used for extrusion, etc. Among them, the texture of the tiles or particles obtained by the extruder is natural, has strong randomness, and has a good texture effect.

[0004] However, in the prior art, the diameter of the spiral blade on the auger rod of the extruder usually remains the same. During the augering process, the auger rod only has axial pressing and driving forces, and there is no radial reaction force from the cavity wall, which will result in a relatively blurred texture of the extruded mud body, low fineness and clarity, and uneven density of the mud body. The texture effect of the product still needs to be improved. Summary of the Utility Model

[0005] In view of the deficiencies of the above prior art, the purpose of the present utility model is to provide an extrusion device, aiming to solve the technical problems that the texture of the mud body extruded by the extruder in the prior art is relatively blurred, the fineness and clarity are not high, and the density is uneven.

[0006] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] An extrusion device includes a discharge die orifice, a augering housing, a feeding housing, a sealing seat, and a driving mechanism connected in sequence; it further includes an auger rod, and the auger rod is located in the augering housing and the feeding housing; the auger rod includes an augering shaft and a spiral blade arranged on the augering shaft; the feeding end of the augering shaft is connected with a transmission shaft; the transmission shaft passes through the sealing seat and is connected with the driving mechanism; a conical augering cavity is arranged in the augering housing; the radius of the spiral blade in the conical augering cavity gradually decreases.

[0008] In the extrusion device, a feeding hopper is arranged on the feeding housing.

[0009] In the extrusion device, a vacuum generator is connected to the augering housing.

[0010] In the extrusion device, the distance between the outer end of the spiral blade and the inner side wall of the augering housing is less than 2 mm.

[0011] The extrusion device described above, wherein the spiral blade includes a first blade segment and a second blade segment; the first blade segment is close to the feeding end; the second blade segment is close to the discharging end, and the radius of the second blade segment gradually decreases along the conveying direction.

[0012] The extrusion device described above, wherein the length of the first blade segment is 1 / 3 to 1 / 2 of the total length of the spiral blade; the length of the second blade segment is 1 / 2 to 2 / 3 of the total length of the spiral blade.

[0013] The extrusion device described above, wherein the radius of the spiral blade at the discharging end is less than 1 / 3 of the radius of the spiral blade at the feeding end and greater than 1 / 4 of the radius of the spiral blade at the feeding end.

[0014] The extrusion device described above, wherein a plurality of retaining bars are movably connected to the outlet end of the discharging die orifice.

[0015] The extrusion device described above, wherein a plurality of telescopic mechanisms are provided at the outlet end of the discharging die orifice, and the moving end of the telescopic mechanism is connected to the retaining bar.

[0016] The extrusion device described above, wherein a plurality of shaping mechanisms are provided at the outlet end of the discharging die orifice, the shaping mechanism includes a transverse moving mechanism and a vertical moving mechanism connected in sequence, and the retaining bar is connected to the vertical moving mechanism.

[0017] Beneficial effects: The present invention provides an extrusion device. A conical agitating cavity is provided in the agitating housing of the extrusion device, and the radius of the corresponding spiral blade in the conical agitating cavity gradually decreases along the conveying direction. During the agitation process of the auger rod, the mud can be extruded onto the cavity wall of the conical agitating cavity, thereby generating a radial reaction force, making the texture of the extruded mud finer, and the mud being more evenly compressed in both the axial and radial directions, the connection of each raw material being tighter, and the density of the mud being more consistent, thus ensuring a higher fineness and clarity of the texture of the product. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the extrusion device.

[0019] Figure 2 It is an exploded view of the extrusion device.

[0020] Figure 3 It is a schematic structural diagram of the discharging die orifice in one embodiment.

[0021] Figure 4 It is a schematic structural diagram of the spiral blade.

[0022] Figure 5 It is a schematic structural diagram of the discharging die orifice in another embodiment.

[0023] Description of main component symbols: 1 - discharge die orifice, 2 - agitating housing, 3 - feeding housing, 4 - sealing seat, 5 - driving mechanism, 51 - gearbox, 52 - motor, 6 - auger rod, 61 - agitating shaft, 62 - spiral blade, 63 - transmission shaft, 31 - feeding hopper, 7 - vacuum generator, 8 - bar, 9 - telescopic mechanism, 101 - lateral moving mechanism, 102 - vertical moving mechanism, 621 - first blade segment, 622 - second blade segment. Specific embodiments

[0024] The present utility model provides an extrusion device. To make the objectives, technical solutions and effects of the present utility model clearer and more definite, the following further describes the present utility model in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is more than two.

[0026] Please refer to Figure 1 and Figure 2 The present utility model provides an extrusion device, including a discharge die orifice 1, an agitating housing 2, a feeding housing 3, a sealing seat 4 and a driving mechanism 5 connected in sequence; further including an auger rod 6, the auger rod 6 is located in the agitating housing 2 and the feeding housing 3; the auger rod 6 includes an agitating shaft 61 and a spiral blade 62 arranged on the agitating shaft 61; the feeding end of the agitating shaft 61 is connected with a transmission shaft 63; the transmission shaft 63 passes through the sealing seat 4 and is connected with the driving mechanism 5; a conical agitating cavity is arranged in the agitating housing 2; the radius of the spiral blade 62 in the conical agitating cavity gradually decreases.

[0027] During use, first put various differently colored mud materials into the feeding housing 3, and at the same time start the driving mechanism 5. The driving mechanism 5 drives the auger rod 6 to rotate through the transmission shaft 63. Under the action of the auger rod 6, the mud materials gradually enter the agitating housing 2. Inside the agitating housing 2, the differently colored mud materials are mixed. During the agitation process of the auger rod 6, the differently colored mud materials are extruded and extended to form a textured mud body. During the extrusion and advancement process, the spiral blade 62 not only forms an axial pressing force to push the mud forward, but also forms a radial reaction force with the inner wall of the conical agitating cavity, making the texture of the extruded mud body finer, and the mud materials can be more evenly compressed in both the axial and radial directions, the mud bodies are closer and the density is more consistent. Finally, the mixed textured mud body is shaped and output through the discharge die orifice 1.

[0028] Preferably, the driving mechanism 5 includes a motor 52 and a gearbox 51. The rotation speed of the motor 52 can be adjusted through the gearbox 51 to optimize the agitation speed.

[0029] Preferably, flange structures are respectively provided on the discharge die orifice 1, the agitating housing 2, the feeding housing 3, the sealing seat 4 and the driving mechanism 5, and they are respectively connected to each other through the flange structures. In this embodiment, the discharge die orifice 1, the agitating housing 2, the feeding housing 3 and the sealing seat 4 are easy to disassemble and install, which is convenient for maintenance, cleaning and replacement of different components. For example, when different shaped mud bodies need to be produced, the discharge die orifice 1 can be replaced.

[0030] In some embodiments, the auger rod 6 can be single or multiple, and different combinations can be used to make products with different shapes and sizes. When making products with a wider size, an extrusion device with multiple auger rods 6 is adopted.

[0031] Please refer to Figure 2 , in one embodiment, a feeding hopper 31 is provided on the feeding housing 3. The feeding hopper 31 can facilitate the reception of the mud materials and prevent the mud materials from falling to the ground.

[0032] Please refer to Figure 2 , in one embodiment, a vacuum generator 7 is connected to the agitating housing 2. The vacuum generator 7 is used to evacuate the gas in the conical agitating cavity as much as possible to make the mud bodies closer.

[0033] In one embodiment, the distance between the outer end of the spiral blade 62 and the inner wall of the agitating housing 2 is less than 2 mm. Please refer to Figure 4, the spiral blade 62 includes a first blade segment 621 and a second blade segment 622; the first blade segment 621 is close to the feed end, and the radius of the first blade segment 621 remains unchanged; the second blade segment 622 is close to the discharge end, and the radius of the second blade segment 622 gradually decreases along the conveying direction. The length of the first blade segment 621 is 1 / 3 to 1 / 2 of the total length of the spiral blade 62; the length of the second blade segment 622 is 1 / 2 to 2 / 3 of the total length of the spiral blade 62. The radius of the spiral blade 62 at the discharge end is less than 1 / 3 of the radius of the spiral blade 62 at the feed end, and greater than 1 / 4 of the radius of the spiral blade 62 at the feed end. In this embodiment, by limiting the diameter of the spiral blade 62 and the distance between the spiral blade 62 and the twisting shell 2, not only can the texture formed during the twisting process reach the edge of the conical twisting cavity, but the texture can also produce a progressive change from a large wire loop to a small wire loop. During the extrusion and advancement process, the texture wire loop gradually becomes smaller and thinner, making the texture present a natural and random effect, and the texture is more fine and clear.

[0034] See also Figure 3 In one embodiment, a plurality of baffles 8 are movably connected to the outlet end of the discharge die 1. The baffles 8 are used to form a barrier when the mud is extruded, so that a product of a specific shape can be prepared.

[0035] See also Figure 3 In one embodiment, a plurality of telescopic mechanisms 9 are provided on the outlet end of the discharge die 1, and the movable end of the telescopic mechanism 9 is connected to the baffle 8. By controlling the elongation of the baffle 8 through the telescopic mechanism 9, grooves of different depths can be formed on the extruded product. By changing the elongation of the baffle 8 while the mud is extruded, vertical wavy grooves or intermittent grooves can also be formed on the mud. The shape of the bottom of the baffle 8 is different, and the shape of the groove formed also changes accordingly. By providing a movable and adjustable baffle 8 at the outlet end of the discharge die 1 to locally change the shape of the discharge die 1, products with local changes can be produced, enriching the application range of the product.

[0036] See also Figure 5 In one embodiment, a plurality of shaping mechanisms are provided on the outlet end of the discharge die 1, and the shaping mechanisms include a lateral moving mechanism 101 and a vertical moving mechanism 102 connected in sequence, and the baffle 8 is connected to the vertical moving mechanism 102. Specifically, the vertical moving mechanism 102 is fixedly connected to the moving end of the lateral moving mechanism 101. The shaping mechanism can simultaneously perform vertical and lateral movements, and the shaping mechanism controls the up and down movement and the lateral left and right movement distance of the baffle 8, so that grooves with different depths and lateral wave shapes can be formed on the extruded product.

[0037] In one embodiment, the extrusion device further comprises a frame, and the discharge die 1, the twisting shell 2, the feed shell 3, the sealing seat 4 and the driving mechanism 5 are arranged on the frame.

[0038] In summary, the utility model provides an extrusion device, which, by providing a conical twisting chamber and a twisting rod 6 and a spiral blade 62 adapted thereto, makes the texture effect of the extruded product better and the interior of the product tighter. The utility model can not only produce flat ceramic plates, but also produce ceramic plates with arc grooves, curved textures or other convex and concave surfaces through further improvements to the discharge die 1. The extrusion device can also be combined with a specific cutting device to produce particles with texture effects, thereby achieving multiple uses of one machine.

[0039] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims

1. An extrusion device, characterized in that: It includes a discharge die, a twisting shell, a feed shell, a sealing seat and a driving mechanism which are connected in sequence; it also includes an auger rod, which is located in the twisting shell and the feed shell; the auger rod includes a twisting shaft and a spiral blade arranged on the twisting shaft; the feed end of the twisting shaft is connected to a transmission shaft; the transmission shaft passes through the sealing seat and is connected to the driving mechanism; a conical twisting cavity is arranged in the twisting shell; the radius of the spiral blade in the conical twisting cavity gradually decreases; a vacuum generator is connected to the twisting shell.

2. The extrusion device according to claim 1, characterized in that A feeding hopper is arranged on the feeding shell.

3. The extrusion device according to claim 1, characterized in that: The distance between the outer end of the spiral blade and the inner wall of the twisting shell is less than 2 mm.

4. The extrusion device according to claim 1, characterized in that The spiral blade comprises a first blade segment and a second blade segment; the first blade segment is close to the feed end; the second blade segment is close to the discharge end, and the radius of the second blade segment gradually decreases along the conveying direction.

5. The extrusion device according to claim 4, characterized in that The length of the first blade segment is 1 / 3 to 1 / 2 of the total length of the spiral blade; the length of the second blade segment is 1 / 2 to 2 / 3 of the total length of the spiral blade.

6. The extrusion device according to claim 1, characterized in that: The radius of the spiral blade at the discharge end is less than 1 / 3 of the radius of the spiral blade at the feed end, and greater than 1 / 4 of the radius of the spiral blade at the feed end.

7. The extrusion device according to claim 1, characterized in that A plurality of baffles are movably connected to the outlet end of the discharge die.

8. The extrusion device according to claim 7, characterized in that A plurality of telescopic mechanisms are arranged on the outlet end of the discharge die, and the movable ends of the telescopic mechanisms are connected to the blocking bars.

9. The extrusion device according to claim 7, characterized in that: A plurality of shaping mechanisms are arranged on the outlet end of the discharge die, and the shaping mechanisms include a lateral moving mechanism and a vertical moving mechanism connected in sequence, and the baffle is connected to the vertical moving mechanism.

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