Blank compression molding device for preparing nano thermal insulation material

Abstract

The utility model discloses a green body compression molding device for preparing a nano heat insulation material, which comprises a bracket, a pre-pressing assembly and a molding assembly, and a transfer carrier plate is clamped in the bracket; the pre-pressing assembly comprises a guide frame clamped to the support, a positioning plate arranged at the bottom end of the guide frame, a pressing plate clamped to the lower end of the positioning plate, an electric push rod arranged on the positioning plate and connected with the support, and a rolling component arranged on the lower bottom face of the positioning plate. The forming assembly comprises a lower die clamped to the transfer carrier plate, a compression air cylinder arranged on the support and an upper die head arranged in the support and corresponding to the lower die in the vertical direction, and the upper die head is connected with an air cylinder rod of the compression air cylinder. The device is reasonable in structural design, effectively improves the compression molding efficiency and quality of the nano heat insulation material green body, and is suitable for popularization and use.

Description

Technical Field

[0001] The utility model relates to the technical field of nano thermal insulation material production, in particular to a blank compression molding device for preparing nano thermal insulation materials. Background Art

[0002] Nanoporous thermal insulation material is a high-temperature resistant and efficient thermal insulation material made of gas-phase nano-silica, inorganic fibers, and functional additives as the main raw materials through mixing and molding processes; it is named because it contains a large number of nano-level pores inside; the thermal conductivity of nanoporous thermal insulation material at room temperature is lower than that of still air, and it has excellent thermal insulation performance. It has very broad application prospects in petrochemical, metallurgical, aerospace and other fields; nanoporous thermal insulation material is often made into plate or felt shape for use during the application process, and its preparation process is: first, the raw material powder and additives are mixed evenly, then the raw material powder is placed in a mold, and finally pressurized.

[0003] However, due to the extremely small particle size and low loose density of gas-phase nano-silica, the bonding strength between powders during molding is low. When the existing molding equipment is used for compression molding, the bonding strength between materials is reduced, affecting the quality of the molded products. At the same time, since the existing molding equipment generally manually loads raw materials, the consistency of the molded products is poor. Utility Model Content

[0004] In view of the above-mentioned technical problems, the utility model provides a green body compression molding device for preparing nano thermal insulation materials.

[0005] The technical solution of the utility model is: a green body compression molding device for preparing nano thermal insulation materials, comprising a bracket and a pre-pressing component and a molding component movably arranged on the bracket in sequence; a transfer carrier is slidably connected inside the bracket, and an operating rod is arranged on the transfer carrier;

[0006] The pre-pressing assembly includes a guide frame slidably clamped on the bracket, a positioning plate arranged at the bottom end of the guide frame, a pressing plate slidably clamped on the lower end of the positioning plate through a guide rod, an electric push rod arranged on the upper surface of the positioning plate and connected to the top of the bracket, and a rolling member arranged on the lower bottom surface of the positioning plate and abutting against the pressing plate; a buffer spring slidably clamped on the guide rod has one end clamped with the guide rod and the other end abutting against the upper surface of the positioning plate; the rolling member is used to drive the pressing plate to vibrate up and down;

[0007] The molding assembly includes a lower mold movably connected to the transfer carrier, a compression cylinder arranged on the upper end surface of the bracket, and an upper mold head arranged inside the bracket and corresponding to the upper and lower positions of the lower mold. The upper mold head is connected to the cylinder rod of the compression cylinder.

[0008] Furthermore, the rolling member includes mounting plates arranged on both sides of the lower bottom surface of the positioning plate, a plurality of rollers rotatably clamped between the two mounting plates, and a rotating motor arranged on one of the mounting plates and providing power to one of the rollers; a connecting gear is arranged at the end of each roller, and a chain is used to drive the connecting gears; and a convex ridge is arranged on the surface of each roller;

[0009] Description: When in use, the rotating motor drives the drum to rotate, so that the pressing plate is driven to vibrate up and down during the rotation of the drum, thereby realizing the vibration pre-pressing of the nano thermal insulation material and improving the forming effect of the nano thermal insulation material blank.

[0010] Furthermore, a sliding limit rod is provided inside the bracket and is slidably engaged with the upper die head;

[0011] Description: The sliding limit rod is helpful to improve the stability of the upper die head when it moves, thereby improving the balance of the extrusion force when the upper die head extrude the nano thermal insulation material.

[0012] Furthermore, it also includes a feeding assembly arranged on the bracket and located at the front end of the pre-pressing assembly; the feeding assembly includes a barrel clamped on the bracket, a baffle plate slidably clamped at the discharge port at the lower end of the barrel, and a quantitative box slidably clamped at the lower end of the barrel through a support tube; the quantitative box is connected to the baffle plate, and a discharge rod penetrating the bracket is arranged on the quantitative box; the support tube is provided with a discharge hole communicated with the quantitative box;

[0013] Description: When in use, insert the quantitative box into the support tube. At this time, the quantitative box pushes the baffle plate to open, and the nano-insulating material enters the quantitative box; when the quantitative box is pulled by the discharge rod, the baffle plate seals and blocks the discharge port at the lower end of the barrel; and the material inside the quantitative box eventually falls into the lower die through the discharge hole on the support tube, and the feeding amount in the lower die is kept consistent, which is beneficial to improve the consistency of the nano-insulating material blank after compression molding.

[0014] Furthermore, alignment holes are arranged on the side wall of the bracket at positions corresponding to the positions of the pre-pressing component, the forming component and the feeding component, and an alignment protrusion is arranged on the side wall of the lower mold;

[0015] Description: By utilizing the alignment function of the alignment protrusion and the alignment hole, the lower die can be accurately positioned with the pre-pressing component, the forming component and the feeding component when it moves inside the bracket.

[0016] The method of using the utility model is:

[0017] First, the nano thermal insulation material is put into the barrel; the transfer carrier and the lower mold are pushed to the bottom of the barrel by the operating rod; the quantitative box is inserted into the support tube, at which time the quantitative box pushes the baffle plate to open, and the nano thermal insulation material enters the quantitative box; then the quantitative box is pulled by the discharge rod, and the baffle plate seals and blocks the discharge port at the lower end of the barrel; and the material inside the quantitative box falls into the lower mold through the discharge hole on the support tube;

[0018] Then, the lower mold is transferred to the bottom of the pressing plate by using the operating rod, and the guide frame, the positioning plate, the pressing plate and the rolling member are pushed downward by the electric push rod, and the pressing plate is pressed into the lower mold. Then, the roller is driven to rotate by the rotary motor, and the pressing plate is driven to vibrate up and down during the rotation of the roller, so as to realize the vibration pre-pressing of the nano thermal insulation material.

[0019] Finally, the lower die is transferred to the bottom of the upper die head by using the operating rod, and the compression cylinder presses the upper die head down through the cylinder rod to move along the sliding limit rod, so as to perform secondary extrusion molding on the nano-insulating material inside the lower die.

[0020] Compared with the prior art, the beneficial effects of the present invention are embodied in the following aspects:

[0021] First, the utility model has a reasonable structural design. Before the green body of the nano thermal insulation material is molded, a pre-pressing component is used for vibration pre-pressing treatment, and then a molding component is used for secondary extrusion molding, which effectively improves the bonding strength between the materials and improves the preparation efficiency of the green body of the nano thermal insulation material;

[0022] Second, the new type of use is provided with a feeding component, so that the feeding amount in the lower mold is kept consistent each time, so that the blank of the rice insulation material after forming has a higher product consistency, thereby improving the product qualification rate;

[0023] Third, the lower die of the utility model can move freely inside the bracket, so that the feeding, pre-pressing and secondary extrusion of the lower die can be carried out continuously, which greatly reduces the labor intensity of the staff and improves the production efficiency of the blank of the nano thermal insulation material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a longitudinal section view of the utility model;

[0025] Figure 2 It is the front view of the utility model;

[0026] Figure 3 It is a schematic diagram of the connection between the pre-pressing component and the bracket of the utility model;

[0027] Figure 4 It is a schematic diagram of the connection between the molding component and the bracket of the utility model;

[0028] Figure 5 It is a schematic diagram of the connection between the feeding assembly and the bracket of the utility model;

[0029] Among them, 1- bracket, 10- transfer carrier, 11- operating rod, 12- alignment hole, 2- pre-pressing assembly, 20- guide frame, 21- positioning plate, 22- pressure plate, 220- guide rod, 221- buffer spring, 23- electric push rod, 24- rolling member, 240- mounting plate, 241- roller, 2410- convex ridge, 242- rotating motor, 3- molding assembly, 30- lower die, 300- alignment protrusion, 31- compression cylinder, 310- cylinder rod, 32- upper die head, 320- sliding limit rod, 4- feeding assembly, 40- barrel, 41- baffle plate, 42- support tube, 420- discharge hole, 43- quantitative box, 430- discharge rod. DETAILED DESCRIPTION

[0030] Example 1

[0031] like Figure 1 The green body molding device for preparing nano thermal insulation materials shown in the figure comprises a bracket 1 and a pre-pressing component 2 and a molding component 3 which are sequentially and movably arranged on the bracket 1; a transfer carrier 10 is slidably engaged inside the bracket 1, and an operating rod 11 is arranged on the transfer carrier 10;

[0032] like Figure 1 , 3 As shown, the pre-pressing assembly 2 includes a guide frame 20 slidably clamped on the bracket 1, a positioning plate 21 arranged at the bottom end of the guide frame 20, a pressing plate 22 slidably clamped at the lower end of the positioning plate 21 through a guide rod 220, an electric push rod 23 arranged on the upper end surface of the positioning plate 21 and connected to the top inside the bracket 1, and a rolling member 24 arranged on the lower bottom surface of the positioning plate 21 and abutting against the pressing plate 22; a buffer spring 221 with one end clamped with the guide rod 220 and the other end abutting against the upper end surface of the positioning plate 21 is slidably clamped on the guide rod 220; the rolling member 24 is used to drive the pressing plate 22 to vibrate up and down; the rolling member 24 is a commercially available product;

[0033] like Figure 1 , 4 As shown, the molding assembly 3 includes a lower mold 30 movably clamped on the transfer carrier 10, a compression cylinder 31 arranged on the upper end surface of the bracket 1, and an upper mold head 32 arranged inside the bracket 1 and corresponding to the upper and lower positions of the lower mold 30. The upper mold head 32 is connected to the cylinder rod 310 of the compression cylinder 31.

[0034] Example 2

[0035] The difference between this embodiment and embodiment 1 is that:

[0036] like Figure 1 , 3As shown, the rolling member 24 includes mounting plates 240 arranged on both sides of the lower bottom surface of the positioning plate 21, three rollers 241 rotatably clamped between the two mounting plates 240, and a rotating motor 242 arranged on one of the mounting plates 240 and providing power to one of the rollers 241; a connecting gear is arranged at the end of each roller 241, and the connecting gears are driven by a chain; and a convex ridge 2410 is arranged on the surface of each roller 241.

[0037] Example 3

[0038] The difference between this embodiment and embodiment 2 is that:

[0039] like Figure 4 As shown, a sliding limit rod 320 is provided inside the bracket 1 and is slidably engaged with the upper die head 32 .

[0040] Example 4

[0041] The difference between this embodiment and embodiment 3 is that:

[0042] like Figure 1 , 2 , 5, it also includes a feeding assembly 4 arranged on the bracket 1 and located at the front end of the pre-pressing assembly 2; the feeding assembly 4 includes a barrel 40 clamped on the bracket 1, a baffle plate 41 slidably clamped at the discharge port at the lower end of the barrel 40, and a quantitative box 43 slidably clamped at the lower end of the barrel 40 through a support tube 42; the quantitative box 43 is connected to the baffle plate 41, and the quantitative box 43 is provided with a discharge rod 430 passing through the bracket 1; the support tube 42 is provided with a discharge hole 420 connected to the quantitative box 43.

[0043] Example 5

[0044] The difference between this embodiment and embodiment 4 is that:

[0045] like Figure 2 As shown, alignment holes 12 are provided on the side wall of the bracket 1 at positions corresponding to the positions of the pre-pressing component 2 , the forming component 3 and the feeding component 4 , and an alignment protrusion 300 is provided on the side wall of the lower mold 30 .

[0046] It should be noted that the electric push rod 23, the rotary motor 242 and the compression cylinder 31 used in the present invention all adopt existing technologies, and are not specifically limited here. The corresponding products can be selected according to actual needs.

Claims

1. A green body compression molding device for preparing nano thermal insulation materials, characterized in that: It comprises a bracket (1) and a pre-pressing component (2) and a forming component (3) which are movably arranged on the bracket (1) in sequence; a transfer carrier (10) is slidably engaged inside the bracket (1), and an operating rod (11) is arranged on the transfer carrier (10); The pre-pressing assembly (2) comprises a guide frame (20) slidably clamped on the bracket (1), a positioning plate (21) arranged at the bottom end of the guide frame (20), a pressure plate (22) slidably clamped on the lower end of the positioning plate (21) through a guide rod (220), an electric push rod (23) arranged on the upper end surface of the positioning plate (21) and connected to the top of the bracket (1), and a rolling member (24) arranged on the lower bottom surface of the positioning plate (21) and abutting against the pressure plate (22); a buffer spring (221) is slidably clamped on the guide rod (220) and has one end clamped with the guide rod (220) and the other end abutting against the upper end surface of the positioning plate (21); the rolling member (24) is used to drive the pressure plate (22) to vibrate up and down; The molding assembly (3) comprises a lower mold (30) movably clamped on a transfer carrier (10), a compression cylinder (31) arranged on the upper end surface of a bracket (1), and an upper mold head (32) arranged inside the bracket (1) and corresponding to the upper and lower positions of the lower mold (30), wherein the upper mold head (32) is connected to a cylinder rod (310) of the compression cylinder (31).

2. A green body compression molding device for preparing nano thermal insulation materials according to claim 1, characterized in that: The rolling member (24) comprises mounting plates (240) arranged on both sides of the lower bottom surface of the positioning plate (21), a plurality of rollers (241) rotatably clamped between the two mounting plates (240), and a rotating motor (242) arranged on one of the mounting plates (240) and providing power to one of the rollers (241); a connecting gear is arranged at the end of each roller (241), and a chain is driven between each of the connecting gears; and a convex ridge (2410) is arranged on the surface of each roller (241).

3. The green body compression molding device for preparing nano thermal insulation materials according to claim 1, characterized in that: A sliding limit rod (320) is arranged inside the bracket (1) and is slidably engaged with the upper die head (32).

4. The green body compression molding device for preparing nano thermal insulation materials according to claim 1, characterized in that: It also comprises a feeding assembly (4) arranged on the bracket (1) and located at the front end of the pre-pressing assembly (2); the feeding assembly (4) comprises a barrel (40) clamped on the bracket (1), a baffle plate (41) slidably clamped at the discharge port at the lower end of the barrel (40), and a quantitative box (43) slidably clamped at the lower end of the barrel (40) through a support tube (42); the quantitative box (43) is connected to the baffle plate (41), and the quantitative box (43) is provided with a discharge rod (430) penetrating the bracket (1); the support tube (42) is provided with a discharge hole (420) which is in communication with the quantitative box (43).

5. A green body compression molding device for preparing nano thermal insulation materials according to claim 4, characterized in that: Alignment holes (12) are provided on the side walls of the support (1) at positions corresponding to the positions of the pre-pressing component (2), the forming component (3) and the feeding component (4), and alignment protrusions (300) are provided on the side walls of the lower mold (30).

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