Novel wear-resistant casting ball sand-coated mold

Abstract

The utility model relates to the field of sand-coated molds, and discloses a novel wear-resistant cast ball sand-coated mold, which is characterized in that a moving groove is arranged above a mold base, a lower mold base is connected to the moving groove in a sliding manner, an electric push rod is arranged above the mold base, the end part of the electric push rod is connected with the front part of the lower mold base, a lower cast ball mold cavity is arranged above the lower mold base, and the lower cast ball mold cavity is connected with the upper part of the lower mold base. Sliding rods are arranged on the side supporting plates, a supporting plate is arranged above the two sliding rods, an air cylinder is arranged on the supporting plate, a telescopic rod of the air cylinder penetrates through the supporting plate to be connected with a pushing frame, an upper die base is arranged below the pushing frame, an upper ball casting die cavity is formed below the upper die base, and the upper ball casting die cavity is matched with the lower ball casting die cavity. The die can avoid the situation that the upper half die and the lower half die deviate when the upper half die and the lower half die need to be in butt joint, so that the quality problem of a casting part is caused, and the situation that after molten iron is cast, redundant air is prone to being left in the molten iron, bubbles and air holes are contained in the cooled molten iron, and the quality of cast balls is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sand-coated moulds, in particular to a novel wear-resistant cast ball sand-coated mould. Background Art

[0002] Iron mold sand casting refers to covering the mold surface with a layer of special mortar to reduce the contact between the molten metal and the mold, thereby preventing the occurrence of defects such as shrinkage cavities. This process can increase the density of the casting, reduce the incidence of defects, and effectively reduce the occurrence of shrinkage cavities. It is widely used in the casting ball industry.

[0003] When the sand-coated ball casting mold is used, the upper and lower half molds need to be docked. After docking, the upper and lower half molds are prone to offset, causing quality problems in the castings. After the molten iron is poured, excess air is likely to remain in the molten iron, resulting in bubbles and pores inside the molten iron after cooling, affecting the quality of the cast ball. Therefore, we propose a new wear-resistant sand-coated ball casting mold. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a novel wear-resistant cast ball sand-coated mold, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: the utility model discloses a novel wear-resistant cast ball sand-coated mold, comprising a mold base, a movable groove is provided on the top of the mold base, a lower mold base is slidably connected to the movable groove, an electric push rod is provided above the top of the mold base, the end of the electric push rod is connected to the front of the lower mold base, a lower cast ball mold cavity is provided above the lower mold base, side support plates are provided on the left and right sides of the lower mold base, sliding rods are provided on the side support plates, a support plate is provided above the two sliding rods, a cylinder is provided on the support plate, and the telescopic rod of the cylinder passes through The support plate is connected to a push frame, an upper mold seat is arranged below the push frame, an upper casting ball mold cavity is opened below the upper mold seat, the upper casting ball mold cavity is adapted to the lower casting ball mold cavity, support plates are respectively arranged on the left and right sides of the upper mold seat, bearings are arranged on the support plates, cavities are respectively opened in the upper mold seat and the lower mold seat, a plurality of injection pipes are evenly arranged above the upper mold seat, the plurality of injection pipes correspond to the ball cavities of the upper casting ball mold cavity, a material cavity plate is arranged above the plurality of injection pipes, a material pipe and an air pipe fitting are arranged above the material cavity plate, and four exhaust pipes are arranged on the upper mold seat.

[0006] Furthermore, the ball corresponding to the bearing is fitted with the slide bar, and an oil filling hole is opened above the bearing.

[0007] Furthermore, a heat insulating pad is arranged on the outer inner wall of the cavity, and the cavity is vacuum-set.

[0008] Furthermore, the four exhaust pipes are distributed in a matrix, and the exhaust pipes are connected to the upper casting ball mold cavity.

[0009] Furthermore, a slide is provided at the rear of the upper die base, and a frame body is provided at the lower die base. The slide is slidably connected to the frame body, and a transverse cross-section of the slide is T-shaped.

[0010] Furthermore, an annular groove is provided on the upper part of the lower die base, and an insert frame is provided on the lower part of the upper die base, and the annular groove is matched with the insert frame.

[0011] Furthermore, the outer side of the cavity plate is coated with a heat insulation layer.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model slides on the corresponding sliding rod through the bearing on the support plate through the operation of the cylinder, thereby avoiding the traditional method of setting the upper mold seat on the sliding rod, causing wear of the sliding rod, and causing the upper mold seat and the lower mold seat to shift when they are closed; and a slide is provided at the rear of the upper mold seat, and the lower mold seat is provided with a frame body, the slide is slidably connected to the frame body, and the stability of the upper mold seat moving downward is improved, and the shift when the upper mold seat and the lower mold seat are closed is avoided; an annular groove is provided above the lower mold seat, and an insertion frame is provided below the upper mold seat, and the annular groove and the insertion frame are plugged into each other, so as to avoid the shift when the upper mold seat and the lower mold seat are closed and improve the stability of the closure of the upper mold seat and the lower mold seat, thereby improving the quality of the cast ball.

[0014] By connecting an external casting liquid pipe to the material pipe, the liquid is introduced into the material cavity plate, and then evenly introduced into the injection pipe through the material cavity plate to inject material into the ball cavity of the upper casting ball mold cavity. The upper mold base and the lower mold base are respectively provided with cavities, and the outer inner walls of the cavities are provided with thermal insulation pads. The cavity is vacuum-set to reduce heat transfer between the molten iron and the upper and lower mold bases, and increase the time for the casting liquid to remain in liquid state. The telescopic rod of the electric push rod is reciprocated to make the lower mold base move in the moving groove of the mold base, and the casting liquid is shaken in the cavity formed by the upper and lower casting ball mold cavities, so that the gas in the casting liquid is discharged through the exhaust pipe to avoid bubbles and pores in the molten iron after cooling, which affects the quality of the cast ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0016] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0018] Figure 4 It is a structural schematic diagram of the lower part of the utility model;

[0019] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0020] Figure 6 This is a cross-sectional view of the upper template.

[0021] In the figure: 1. mold base; 2. movable groove; 3. lower mold base; 4. electric push rod; 5. lower casting ball mold cavity; 6. slide rod; 7. support plate; 8. cylinder; 9. push frame; 10. upper mold base; 11. upper casting ball mold cavity; 12. bearing; 13. cavity; 14. injection pipe; 15. cavity plate; 16. air pipe fittings; 17. exhaust pipe; 18. oil injection hole; 19. thermal insulation pad; 20. slide; 21. frame; 22. ring groove; 23. insertion frame. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-6The new wear-resistant casting ball sand-coated mold of the present embodiment includes a mold base 1, which is made of fine steel. The electrical components on the mold are externally controlled by switches. A movable groove 2 is provided above the mold base 1, and a lower mold base 3 is slidably connected to the movable groove 2. An electric push rod 4 is provided above the mold base 1. The end of the electric push rod 4 is connected to the front of the lower mold base 3. The operation of the electric push rod 4 is controlled so that the telescopic rod of the electric push rod 4 reciprocates, thereby causing the lower mold base 3 to move in the movable groove 2 of the mold base 1, so as to move the casting liquid in the upper casting ball mold cavity 11. The lower die seat 3 is provided with a lower ball casting mold cavity 5, and the lower die seat 3 is provided with a lower ball casting mold cavity 5. The lower die seat 3 is provided with a lower ball casting mold cavity 5, and the lower die seat 3 is provided with a side support plate on the left and right sides respectively. The side support plate is provided with a slide bar 6. A support plate 7 is provided above the two slide bars 6. A cylinder 8 is provided on the support plate 7. The telescopic rod of the cylinder 8 passes through the support plate 7 and is connected with a push frame 9. An upper die seat 10 is provided below the push frame 9. An upper die seat 10 is provided below the upper die seat 10. The ball casting mold cavity 11, the upper ball casting mold cavity 11 is adapted to the lower ball casting mold cavity 5, and the left and right sides of the upper mold base 10 are respectively provided with support plates, and the support plates are provided with bearings 12, so that the bearings 12 on the support plates slide on the corresponding slide rods 6, avoiding the traditional setting of the upper mold base 10 on the slide rod 6 6, causing the wear of the slide rod 6, so that the upper mold base 10 and the lower mold base 3 are offset when they are closed, and the upper mold base 10 and the lower mold base 3 are respectively provided with cavities 13, and a plurality of injection pipes 14 are evenly arranged above the upper mold base 10, and the plurality of injection pipes 14 correspond to the ball cavities of the upper ball casting mold cavity 11 A cavity plate is arranged above the multiple injection pipes 14, and a material pipe and an air pipe fitting 16 are arranged above the cavity plate. A valve body is arranged on the injection pipe 14 and the air pipe fitting 16 respectively. By connecting an external molten metal pipe to the material pipe, the liquid is introduced into the cavity plate, and gas is introduced into the air pipe fitting 16 to guide the molten metal in the cavity plate out. The cavity plate 15 is evenly introduced into the injection pipe 14 to inject material into the ball cavity of the upper casting ball mold cavity 11. Four exhaust pipes 17 are arranged on the upper mold base 10 to discharge the gas in the molten metal in the cavity formed by the upper casting ball mold cavity 11 and the lower casting ball mold cavity 5.

[0024] like Figure 1 , 3 As shown, the ball of the corresponding bearing 12 fits with the slide bar 6 , and an oil filling hole 18 is opened above the bearing 12 .

[0025] like Figure 6As shown, a heat insulating pad 19 is provided on the outer inner wall of the cavity 13, and the cavity 13 is set to be vacuum, so as to reduce the heat transfer between the molten iron and the upper mold base 10 and the lower mold base 3, and increase the time that the casting liquid remains in liquid state. The telescopic rod of the electric push rod 4 is reciprocated, so that the lower mold base 3 moves in the movable groove 2 of the mold base 1, and the casting liquid is shaken in the cavity formed by the upper casting ball mold cavity 11 and the lower casting ball mold cavity 5, so that the gas in the casting liquid is discharged through the exhaust pipe 17.

[0026] like Figure 1 , 6 As shown, four exhaust pipes 17 are distributed in a matrix, and the exhaust pipes 17 are connected to the upper ball casting mold cavity 11 to discharge the gas in the casting liquid in the mold cavity formed by the upper ball casting mold cavity 11 and the lower ball casting mold cavity 5.

[0027] like Figure 1 As shown, a slide 20 is provided at the rear of the upper mold base 10, and a frame 21 is provided at the lower mold base 3. The slide 20 is slidably connected to the frame 21. The transverse cross-section of the slide 20 is T-shaped, which improves the stability of the upper mold base 10 moving downward and avoids the upper mold base 10 and the lower mold base 3 from offset when closing.

[0028] like Figure 1 , 2 As shown in Figures 3 and 4, an annular groove 22 is provided on the top of the lower mold base 3, and an insert frame 23 is provided on the bottom of the upper mold base 10. The annular groove 22 is matched with the insert frame 23 to avoid displacement when the upper mold base 10 and the lower mold base 3 are closed, and to improve the stability of the closing of the upper mold base 10 and the lower mold base 3.

[0029] like Figure 1 , 6 As shown, the outer side of the cavity plate is covered with a heat insulation layer to prevent the casting liquid temperature in the cavity plate from decreasing.

[0030] During the specific implementation of this embodiment, the operation of the cylinder 8 enables the push frame 9 to push the upper die seat 10 downward. At this time, the bearing 12 on the support sheet slides on the corresponding slide bar 6, avoiding the traditional arrangement of the upper die seat 10 on the slide bar 6, causing wear of the slide bar 6, so that the upper die seat 10 and the lower die seat 3 are offset when closed, and a slide 20 is provided at the rear of the upper die seat 10, and a frame 21 is provided at the lower die seat 3. The slide 20 is slidably connected to the frame 21 to improve the stability of the downward movement of the upper die seat 10 and avoid the offset when the upper die seat 10 and the lower die seat 3 are closed. An annular groove 22 is provided above the lower die seat 3, and an insert frame 23 is provided below the upper die seat 10. The annular groove 22 is plugged into the insert frame 23 to avoid the offset when the upper die seat 10 and the lower die seat 3 are closed, and to improve the stability of the closing of the upper die seat 10 and the lower die seat 3. , thereby improving the quality of the cast ball, by connecting an external casting liquid pipe to the material pipe, the liquid is introduced into the material cavity plate, and is evenly introduced into the injection pipe 14 through the material cavity plate 15, and the ball cavity of the upper casting ball mold cavity 11 is injected, and a cavity 13 is respectively opened in the upper mold base 10 and the lower mold base 3, and an insulation pad 19 is arranged on the outer inner wall of the cavity 13. The cavity 13 is vacuum-set to reduce the heat transfer between the molten iron and the upper mold base 10 and the lower mold base 3, and increase the length of time that the casting liquid remains in a liquid state, and cooperate with the telescopic rod of the electric push rod 4 to make reciprocating motion, so that the lower mold base 3 moves in the moving groove 2 of the mold base 1, and the casting liquid is shaken in the cavity formed by the upper casting ball mold cavity 11 and the lower casting ball mold cavity 5, so that the gas in the casting liquid is discharged through the exhaust pipe 17, so as to avoid bubbles and pores in the molten iron after cooling, which affects the quality of the cast ball.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel wear-resistant cast ball sand-coated mold, comprising a mold base (1), characterized in that: A movable groove (2) is provided above the mold base (1), and a lower mold base (3) is slidably connected to the movable groove (2). An electric push rod (4) is provided above the mold base (1), and the end of the electric push rod (4) is connected to the front of the lower mold base (3). A lower casting ball mold cavity (5) is provided above the lower mold base (3). Side support plates are provided on the left and right sides of the lower mold base (3), and sliding rods (6) are provided on the side support plates. A support plate (7) is provided above the two sliding rods (6). A cylinder (8) is provided on the support plate (7). The telescopic rod of the cylinder (8) passes through the support plate (7) and is connected to a push frame (9). An upper mold base (10) is provided below the push frame (9). An upper ball casting mold cavity (11) is provided below the upper mold base (10), and the upper ball casting mold cavity (11) is adapted to the lower ball casting mold cavity (5). Support plates are provided on the left and right sides of the upper mold base (10), and bearings (12) are provided on the support plates. Cavities (13) are provided in the upper mold base (10) and the lower mold base (3), respectively. A plurality of injection pipes (14) are evenly provided above the upper mold base (10), and the plurality of injection pipes (14) correspond to the ball cavities of the upper ball casting mold cavity (11). A cavity plate (15) is provided above the plurality of injection pipes (14), and a material pipe and an air pipe member (16) are provided above the cavity plate (15). Four exhaust pipes (17) are provided on the upper mold base (10).

2. The novel wear-resistant cast ball sand-coated mold according to claim 1 is characterized in that: The ball bearing of the corresponding bearing (12) fits the slide bar (6), and an oil injection hole (18) is provided above the bearing (12).

3. The novel wear-resistant cast ball sand-coated mold according to claim 1 is characterized in that: A heat insulation pad (19) is provided on the outer inner wall of the cavity (13), and the cavity (13) is vacuum-set.

4. The novel wear-resistant cast ball sand-coated mold according to claim 1 is characterized in that: The four exhaust pipes (17) are distributed in a matrix pattern, and the exhaust pipes (17) are connected to the upper ball casting mold cavity (11).

5. The novel wear-resistant cast ball sand-coated mold according to claim 1 is characterized in that: A slide (20) is arranged at the rear of the upper die seat (10), and a frame body (21) is arranged on the lower die seat (3). The slide (20) is slidably connected to the frame body (21), and the transverse cross section of the slide (20) is T-shaped.

6. The novel wear-resistant cast ball sand-coated mold according to claim 1 is characterized in that: An annular groove (22) is provided above the lower die seat (3), and an insert frame (23) is provided below the upper die seat (10), wherein the annular groove (22) is adapted to fit the insert frame (23).

7. The novel wear-resistant cast ball sand-coated mold according to claim 1 is characterized in that: The outer side of the cavity plate (15) is coated with a heat insulation layer.

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