Adjustable vacuum hot press molding device for rubber production

Abstract

The utility model belongs to the technical field of hot-press molding, and particularly relates to an adjustable vacuum hot-press molding device for rubber production, which comprises a base, a vacuum hot-press molding device and a vacuum hot-press molding device, wherein the base is positioned above a rack and is provided with a support mold and a hot-press mold matched with the support mold; the hydraulic cylinder is mounted on the protective cover, and a piston rod of the hydraulic cylinder is connected with a hot pressing block with a built-in electric heating element; the air cylinder is mounted on the protective cover; the vacuum cover is suitable for being in contact fit with the base for sealing, the vacuum cover is connected to a telescopic rod of the air cylinder, the hot pressing block is located in the vacuum cover, and the vacuum cover is in sliding fit with the hydraulic cylinder; and the vacuum suction pipe is communicated with the vacuum cover. The vacuum suction pipe is externally connected with vacuumizing equipment to vacuumize the inside of the protective cover, and the vacuum degree is adjusted, so that a vacuum state is formed inside the supporting mold and the hot-pressing mold, a rubber material is promoted to be tightly attached to the wall surface of the mold, air and volatile matters are removed, bubbles are reduced, and the density and quality of a product are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot pressing molding, and in particular relates to an adjustable vacuum hot pressing molding device for rubber production. Background Art

[0002] Rubber hot pressing is a process that processes rubber materials into products of specific shapes. During the production process, the rubber needs to be placed in the mold groove of the supporting mold, and then the hot pressing mold is closed. The hot pressing mold is heated and pressurized to melt the rubber into a shape that fits the mold groove. After the rubber cools and takes shape, the hot pressing mold can be opened to take out the product.

[0003] In the rubber vulcanization and silicone rubber and liquid silicone molding process, if the raw materials are not effectively isolated from air and other gases during the mixing stage, these gases are likely to remain in the final product, forming undesirable pores.

[0004] This situation can significantly affect many aspects of the product's performance, such as its appearance, structural integrity and mechanical properties.

[0005] According to the shortcomings existing in the above-mentioned rubber production process, an adjustable vacuum hot pressing molding device for rubber production is designed. Utility Model Content

[0006] The utility model aims to overcome the disadvantages caused by failure to effectively isolate air and other gases in the rubber production process, and provides an adjustable vacuum hot pressing molding device for rubber production.

[0007] In order to solve the above technical problems, the utility model provides an adjustable vacuum hot pressing molding device for rubber production, comprising: a protective cover connected to the upper side of a frame, the lower left side and the lower front side of the protective cover are both provided with openings; a base located above the frame, the base having a supporting mold and a hot pressing mold used in conjunction with the supporting mold; a hydraulic cylinder installed on the protective cover, a hot pressing block with a built-in electric heating element connected to the piston rod of the hydraulic cylinder; an air cylinder installed on the protective cover; a vacuum cover suitable for contacting and cooperating with the base and performing sealing, the vacuum cover being connected to the telescopic rod of the air cylinder, the hot pressing block being located in the vacuum cover, and the vacuum cover slidingly cooperates with the hydraulic cylinder; a vacuum suction pipe connected to the vacuum cover.

[0008] Preferably, it also includes: an electric guide rail installed on the upper side of the frame, and the base is connected to the slider of the electric guide rail; one end of the electric guide rail extends from the inside of the protective cover to the lower left opening of the protective cover.

[0009] Preferably, it also comprises: two sliding blocks facing each other front and back, the sliding block (61) is arranged on the base (2), and the hot pressing mold is rotatably arranged on the upper part of the sliding block.

[0010] Preferably, both sliders are slidably matched with the base, and the sliders move downward so that the hot pressing mold has a sufficient downward movement distance to extrude the rubber material on the supporting mold.

[0011] Preferably, it also includes: a spring for returning the slider to its original position after sliding, and the spring is connected between the slider and the base.

[0012] Preferably, it also includes: an L-shaped abutment block connected to a side of the hot pressing mold away from the slider.

[0013] Preferably, it also includes: a pressure rod suitable for contacting and cooperating with the abutment block, and the pressure rod is connected to the vacuum cover.

[0014] Preferably, four receiving grooves are provided at the edge of the supporting mold.

[0015] Preferably, it also includes: four L-shaped pull plates, which are respectively connected to the four corners of the lower side of the hot pressing mold, and a predetermined distance is left between the L-shaped pull plates and the lower side of the hot pressing mold for the rubber material to flow; and the accommodating groove on the supporting mold is suitable for accommodating the L-shaped pull plates.

[0016] Preferably, it also includes: two front and rear opposing resistance rods, which are respectively connected to the front and rear sides of the hot pressing mold, and the resistance rods are far away from the slider; a wedge-shaped guide frame, which is connected to the upper left side of the frame through a bracket, and the resistance rods are suitable for contacting and cooperating with the wedge-shaped guide frame.

[0017] On the basis of overcoming the shortcomings of the prior art, the utility model can achieve the following beneficial effects:

[0018] The vacuum pipette is connected to an external vacuum pumping device to evacuate the inside of the protective cover and adjust the vacuum degree to form a vacuum state inside the supporting mold and the hot pressing mold, so as to force the rubber material to adhere to the mold wall, while eliminating air and volatiles, reducing bubbles, and improving the density and quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly diagram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the protective cover of the utility model, which also includes a hot pressing mold in a closed state inside the protective cover.

[0021] Figure 3 It is a cross-sectional view of the vacuum cover of the utility model.

[0022] Figure 4 It is a schematic diagram of the vacuum cover and the pressure rod of the utility model.

[0023] Figure 5 It is a schematic diagram of the hot pressing mold, the resistance block and the resistance rod of the utility model.

[0024] Figure 6 It is a schematic diagram of the left side of the hot pressing mold of the utility model in the opened state.

[0025] Figure 7 It is a cross-sectional view of the support mold and the hot pressing mold in the closed state of the utility model.

[0026] Figure 8 It is a schematic diagram of the frame, bracket and wedge-shaped guide frame of the utility model, wherein only part of the frame is shown.

[0027] The marks in the accompanying drawings provided by the utility model are: 11-frame, 12-protective cover, 2-base, 21-support mold, 22-hot pressing mold, 221-resistance block, 222-resistance rod, 31-hydraulic cylinder, 32-hot pressing block, 41-cylinder, 42-vacuum cover, 43-vacuum suction pipe, 44-pressure rod, 5-electric guide rail, 61-slider, 62-spring, 71-accommodating groove, 72-L-shaped pull plate, 81-bracket, 82-wedge-shaped guide frame. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0029] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] An adjustable vacuum hot pressing molding device for rubber production, such as Figure 1-Figure 4As shown, it includes: a protective cover 12, which is connected to the upper side of the frame 11, and the lower left side and the lower front side of the protective cover 12 are both opened; a base 2, which is located above the frame 11, and the base 2 is provided with a supporting mold 21 and a hot pressing mold 22 used in conjunction with the supporting mold 21, and the rubber material is placed between the supporting mold 21 and the hot pressing mold 22, and the hot pressing mold 22 will press the rubber material on the supporting mold 21, so that the base 2 and the supporting mold 21 and the hot pressing mold 22 thereon enter the protective cover 12 through the opening on the protective cover 12; a hydraulic cylinder 31, which is installed on the protective cover 12, and the piston rod of the hydraulic cylinder 31 is connected to a hot pressing block 32 with a built-in electric heating element, and the hydraulic cylinder 31 is controlled to drive the hot pressing block 32 to move downward to contact and cooperate with the hot pressing mold 22, and at the same time, the built-in electric heating element of the hot pressing block 32 is controlled to heat, and the hot pressing block 32 will heat The amount and pressure are transferred to the hot pressing mold 22, so as to perform hot pressing molding operation on the rubber material; the cylinder 41 is installed on the protective cover 12; a vacuum cover 42 suitable for contacting and cooperating with the base 2 and sealing, the vacuum cover 42 is connected to the telescopic rod of the cylinder 41, the hot pressing block 32 is located in the vacuum cover 42, and the vacuum cover 42 is slidably matched with the hydraulic cylinder 31; the vacuum suction pipe 43 is connected to the vacuum cover 42; when the hot pressing block 32 moves down to press the hot pressing mold 22, the cylinder 41 is controlled to drive the vacuum cover 42 to move down and contact and seal with the base 2, and then the vacuum suction pipe 43 is connected to the external vacuum pumping equipment to perform vacuum pumping operation on the protective cover 12, and the vacuum degree is adjusted, so as to form a vacuum state inside the supporting mold 21 and the hot pressing mold 22, so as to promote the rubber material to be close to the mold wall, while removing air and volatiles, reducing bubbles, and improving the density and quality of the product.

[0031] like Figure 2 As shown, it also includes: an electric guide rail 5, which is installed on the upper side of the frame 11, and the base 2 is connected to the slider 61 of the electric guide rail 5; one end of the electric guide rail 5 extends from the inside of the protective cover 12 to the lower left opening of the protective cover 12, so that after the rubber is vacuum hot-pressed, the electric guide rail 5 can be controlled to drive the base 2 to drive the supporting mold 21 and the hot-pressing mold 22 to move out of the protective cover 12 to the left, so as to facilitate the removal of the rubber and avoid being affected by the hot-pressing block 32.

[0032] like Figure 5 As shown, it also includes: two sliders 61 facing each other front and back, and the hot pressing mold 22 is rotatably arranged on the upper part of the slider 61. The hot pressing mold 22 is rotated to open it, and the hot pressing mold 22 is rotated in the opposite direction to close it. In this way, there is no need to frequently carry and place the hot pressing mold 22, which is convenient to use.

[0033] like Figure 5As shown, the two sliders 61 are slidably matched with the base 2. When the hot pressing block 32 moves downward to press the hot pressing mold 22, the slider 61 moves downward accordingly, thereby ensuring a stable connection between the hot pressing mold 22 and the slider 61 at the rotational match, and at the same time enabling the hot pressing mold 22 to have enough downward movement distance to fully extrude the rubber material on the support mold 21.

[0034] like Figure 5 As shown, it also includes: a spring 62 for returning the slider 61 after sliding, and the spring 62 is connected between the slider 61 and the base 2. When the hot pressing block 32 moves down to press the hot pressing mold 22, the slider 61 moves down accordingly, and the spring 62 is deformed. When the hot pressing block 32 releases the hot pressing mold 22 and the operator rotates to open the hot pressing mold 22, under the action of the spring 62, the slider 61 will drive the hot pressing mold 22 to move slightly upward away from the supporting mold 21, so as to facilitate opening the hot pressing mold 22 and taking out the hot-pressed rubber product.

[0035] like Figure 5 and Figure 6 As shown, it also includes: an L-shaped resistance block 221 connected to the side of the hot pressing mold 22 away from the slider 61, and the hot pressing mold 22 can be easily rotated on the slider 61 by driving the resistance block 221.

[0036] like Figure 4-Figure 6 As shown, it also includes: a pressure rod 44 suitable for contacting and cooperating with the resistance block 221, and the pressure rod 44 is connected to the vacuum cover 42; when the rubber material is subjected to vacuum hot pressing, the downward movement of the vacuum cover 42 will drive the pressure rod 44 to move downward to squeeze the resistance block 221, and the resistance block 221 will be forced to drive the hot pressing mold 22 to move downward, thereby increasing the extrusion force on the hot pressing mold 22 and ensuring sufficient extrusion of the rubber material.

[0037] like Figure 6 and Figure 7 As shown, four receiving grooves 71 are opened at the edge of the supporting mold 21 , and the rubber products attached to the supporting mold 21 are conveniently grasped and taken out through the receiving grooves 71 .

[0038] like Figure 6 and Figure 7 As shown, it also includes: four L-shaped pull plates 72, which are respectively connected to the four corners of the lower side of the hot pressing mold 22, and a predetermined distance is left between the L-shaped pull plates 72 and the lower side of the hot pressing mold 22 for the rubber material to flow; the accommodating groove 71 on the supporting mold 21 is suitable for accommodating the L-shaped pull plates 72; when the rubber material is hot-pressed, the rubber liquid overflowing from the mold groove of the supporting mold 21 will flow on the upper side of the L-shaped pull plates 72 in the accommodating groove 71. When the rubber hot-pressing is completed and the hot-pressing mold 22 is rotated to open, the hot-pressing mold 22 will pull the rubber product attached to the supporting mold 21 through the L-shaped pull plates 72, so that the rubber product can be easily removed.

[0039] like Figure 1 , Figure 6 and Figure 8 As shown in the figure, it also includes: two front and rear opposing resistance rods 222, the front and rear resistance rods 222 are respectively connected to the front and rear sides of the hot pressing mold 22, and the resistance rods 222 are away from the slider 61; a wedge-shaped guide frame 82, which is connected to the upper left side of the frame 11 through the bracket 81, and the resistance rods 222 are suitable for contacting and cooperating with the wedge-shaped guide frame 82; when the rubber hot pressing molding is completed and the base 2 drives the supporting mold 21 and the hot pressing mold 22 to move out of the protective cover 12 to the left, the hot pressing mold 22 will drive the resistance rods 222 to move up along the wedge-shaped guide frame 82, so that the hot pressing mold 22 is automatically and synchronously opened when the rubber product needs to be taken out, with high synchronization.

[0040] Obviously, the embodiments described above are only part of the embodiments of the present utility model, rather than all of the embodiments. They only express the preferred implementation mode of the present utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present utility model.

[0041] It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, they can also make several modifications, increases and decreases in quantity, improvements and substitutions. Therefore, based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the utility model.

Claims

1. An adjustable vacuum hot pressing molding device for rubber production, characterized in that: include: Frame (11); A protective cover (12) connected to the upper side of the frame (11), wherein an opening is formed at the lower portion of the protective cover (12); A base (2) is located above the frame (11), and the base (2) has a supporting mold (21) and a hot pressing mold (22) used in conjunction with the supporting mold (21); A hydraulic cylinder (31) is mounted on the protective cover (12), and a hot pressing block (32) with a built-in electric heating element is connected to the piston rod of the hydraulic cylinder (31); A cylinder (41) mounted on the protective cover (12); a vacuum cover (42) adapted to contact and cooperate with the base (2) and to perform sealing, the vacuum cover (42) being connected to the telescopic rod of the cylinder (41), the hot pressing block (32) being located in the vacuum cover (42), and the vacuum cover (42) being slidably cooperated with the hydraulic cylinder (31); A vacuum suction pipe (43) is communicated with the vacuum cover (42).

2. The adjustable vacuum hot pressing molding device for rubber production according to claim 1, characterized in that: Also includes: An electric guide rail (5) is installed on the upper side of the frame (11), and the base (2) is connected to a slider (61) of the electric guide rail (5); One end of the electric guide rail (5) extends from inside the protective cover (12) toward the opening of the protective cover (12).

3. The adjustable vacuum hot pressing molding device for rubber production according to claim 2, characterized in that: Also includes: A slider (61), wherein the slider (61) is arranged on the base (2), and the hot pressing mold (22) is rotatably arranged on the upper part of the slider (61).

4. The adjustable vacuum hot pressing molding device for rubber production according to claim 3, characterized in that: Also includes: The slider (61) is slidably matched with the base (2), and the slider (61) moves downward so that the hot pressing mold (22) has a sufficient downward movement distance to extrude the rubber material on the supporting mold (21).

5. The adjustable vacuum hot pressing molding device for rubber production according to claim 4, characterized in that: Also includes: A spring (62), wherein the spring (62) is connected between the slider (61) and the base (2).

6. The adjustable vacuum hot pressing molding device for rubber production according to claim 3, characterized in that: Also includes: The abutment block (221) is connected to a side of the hot pressing mold (22) away from the sliding block (61).

7. The adjustable vacuum hot pressing molding device for rubber production according to claim 6, characterized in that: Also includes: A pressure rod (44) adapted to contact and cooperate with the abutment block (221), wherein the pressure rod (44) is connected to the vacuum cover (42).

8. The adjustable vacuum hot pressing molding device for rubber production according to claim 1, characterized in that: Also includes: A receiving groove (71) is provided at the edge of the supporting mold (21).

9. The adjustable vacuum hot pressing molding device for rubber production according to claim 8, characterized in that: Also includes: An L-shaped pull plate (72) connected to the lower side of the hot pressing mold (22), with a predetermined distance between the L-shaped pull plate (72) and the lower side of the hot pressing mold (22); The receiving groove (71) on the supporting mold (21) is suitable for receiving the L-shaped pull plate (72).

10. The adjustable vacuum hot pressing molding device for rubber production according to claim 3, characterized in that: Also includes: A resistance rod (222) connected to the hot pressing mold (22), wherein the resistance rod (222) is away from the slider (61); The wedge-shaped guide frame (82) is connected to the frame (11) through a bracket (81), and the abutment rod (222) is suitable for contacting and cooperating with the wedge-shaped guide frame (82).

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