A mechanical material preparation mold

Abstract

The present invention relates to the technical field of die-casting molds, and discloses a mechanical material preparation mold, including a base, support columns are respectively arranged at the four corners of the upper end surface of the base, a top plate is fixedly arranged at the upper ends of the four support columns, and a movable seat is slidably arranged on the four support columns, a lower die-casting mold is arranged on the upper end surface of the base, an upper die-casting mold is arranged on the lower end surface of the movable seat, and a preparation cavity is arranged on the opposite surfaces of the lower die-casting mold and the upper die-casting mold; two hydraulic cylinders are symmetrically arranged at the upper end of the movable seat, the upper end of the hydraulic cylinder is fixedly connected to the lower end of the top plate, the lower end of the hydraulic cylinder is fixedly connected to the upper end of the movable seat, a filling channel is arranged in the middle of the movable seat, and the filling channel and the preparation cavity are connected; a sealing enclosure is arranged at the edge of the upper die-casting mold. The present invention can make the casting on the lower die-casting mold easily detach from the die-casting mold during the demolding process, prevent adhesion to the die-casting mold, and the demolding efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting molds, in particular to a mold prepared from mechanical materials. Background Art

[0002] Die casting is a type of casting, in which liquid metal or semi-liquid metal is filled into the cavity of a die-casting mold at high speed under high pressure, and then rapidly solidified under high pressure to obtain a casting.

[0003] According to a rapid die-casting mold for mechanical parts disclosed in Chinese patent application No. 201820236072.X, it includes a mold base, four supporting soft feet are provided at the four corners of the lower end of the mold base, and at least four closed bodies are fixed to the four corners of the upper end of the mold base as a whole, at least two discharge troughs are provided in the middle of the upper end of the mold base, and a main fixing port is provided in the middle of the front side of the upper end of the mold base. When casting, this rapid die-casting mold for mechanical parts pours the material into the discharge trough. Because the surface of the discharge trough is provided with at least fifteen protrusions with a protrusion of 3 mm, it can be quickly taken out after casting without wasting time when taking it out. After the material is discharged, the pressure handle is held to press down the die-casting cover. However, this rapid die-casting mold for mechanical parts has the following shortcomings:

[0004] The rapid die-casting mold for mechanical parts has at least fifteen protrusions with a height of 3 mm on the surface of the discharge trough. This will result in an uneven surface of the die-cast mechanical parts, affecting the structure of the mechanical parts and their strength.

[0005] To this end, we designed a mechanical material preparation mold. Summary of the Invention

[0006] (1) Technical problems solved

[0007] In view of the shortcomings of the existing technology, the present invention provides a mold for preparing mechanical materials, which has the advantages of convenient demoulding and unloading without affecting the structure and firmness of the cast mechanical parts.

[0008] (2) Technical solution

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] The top end face of the movable frame is provided with an upper die-casting mold, and the lower end face of the movable frame is provided with an upper die-casting mold. The opposite surfaces of the lower die-casting mold and the upper die-casting mold are provided with a preparation cavity; two hydraulic cylinders are symmetrically provided on the upper end of the movable seat, the upper end of the hydraulic cylinder is fixedly connected to the lower end of the top plate, the lower end of the hydraulic cylinder is fixedly connected to the upper end of the movable seat, and a filling channel is provided in the middle of the movable seat, and the filling channel and the preparation cavity are connected; a sealing enclosure is provided at the edge of the upper die-casting mold, and a sealing enclosure slot is provided at the edge of the lower die-casting mold, and a ventilation pipe is symmetrically provided at the bottom of the preparation cavity of the lower die-casting mold, and a sealing plug is movably provided in the ventilation pipe.

[0011] As a preferred solution of this technical solution, cavities are symmetrically provided at both ends of the base, and driving mechanisms for driving the sealing plug to rise and fall are provided in the two cavities; driving tooth plates for driving the driving mechanisms are provided at both ends of the lower end surface of the sealing plate.

[0012] As a preferred solution of the present technical solution, the driving mechanism includes a driving gear, a bearing seat, a transmission shaft, a threaded rod, a first helical gear and a second helical gear. The transmission shaft is horizontally fixed at the bottom of the cavity through multiple bearing seats. The driving gear is fixedly connected to one end of the transmission shaft, and the first helical gear is fixedly connected to the other end of the transmission shaft. The lower end of the sealing plug is threadedly connected to the upper end of the threaded rod, and the lower end of the threaded rod is rotatably connected to the bottom of the cavity through a bearing. The second helical gear is fixedly connected to the middle part of the outer side surface of the threaded rod, and the first helical gear and the second helical gear are meshed for transmission. The driving gear and the driving tooth plate are in the same vertical plane. When the sealing enclosure is inserted into the sealing enclosure slot, the driving tooth plate and the driving gear are meshed.

[0013] As a preferred solution of the present technical solution, the ventilation tube is a square tube, the cross-section of the sealing plug is T-shaped, and the upper end of the sealing plug matches the inner cavity shape of the ventilation tube, the lower end of the ventilation tube extends into the interior of the cavity, and a plurality of ventilation holes are provided on the side wall of the extended end of the ventilation tube.

[0014] As a preferred solution of the present technical solution, an automatic closing mechanism is provided at the inner lower end of the filling channel, and the automatic closing mechanism includes rectangular grooves arranged on both sides of the filling channel and two closing plates arranged in the two rectangular grooves, and the closing plates are slidingly arranged between the rectangular grooves. A spring is also provided inside the rectangular groove, and one end of the spring is fixedly connected to the inner wall of the rectangular groove, and the other end of the spring is fixedly connected to the inner side surface of the closing plate.

[0015] As a preferred solution of the present technical solution, the outer end of the closing plate is set to be inclined. When not filling, the two closing plates contact each other under the action of the spring to close the filling channel. When filling, the filling tube is inserted into the filling channel, and the lower end of the filling tube squeezes the inclined surface of the closing plate, so that the closing plate moves inward, the spring is compressed, and the filling channel opens.

[0016] As a preferred solution of the present technical solution, sealing rings are provided on the two inner sides of the sealing panel slot. The sealing rings are made of rubber and are in the shape of an arc surface that bulges toward the center of the sealing panel slot. When the sealing panel is inserted into the sealing panel slot, the sealing rings on both sides will be tightly attached to the two sides of the sealing panel, so that the sealing effect is better.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a mold for preparing mechanical materials, which has the following beneficial effects:

[0019] 1. The mechanical material preparation mold is provided with a sealing enclosure at the lower end of the upper die casting mold and a sealing enclosure slot at the lower die casting mold. During operation, the hydraulic cylinder drives the movable seat and the upper die casting mold to move downward, so that the upper die casting mold and the lower die casting mold fit together. At this time, the sealing enclosure is inserted into the sealing enclosure slot, the driving gear plate is engaged with the driving gear, and drives the driving gear to rotate, the driving gear drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the threaded rod to rotate, so that the sealing plug moves upward to seal the vent pipe, so that a sealed preparation cavity is formed between the upper die casting mold and the lower die casting mold, and the liquid metal or semi-liquid metal is filled into the preparation cavity of the die casting mold at high speed under high pressure, and is filled under high pressure. Mechanical material castings obtained by rapid solidification; during demoulding, the movable seat and the upper die casting mold rise, at this time the sealing enclosure gradually separates from the sealing enclosure slot, and before the sealing enclosure separates from the sealing enclosure slot, negative pressure will be formed in the preparation cavity, and at the same time the driving gear plate drives the driving gear to rotate in the opposite direction, the driving gear drives the first bevel gear to rotate in the opposite direction, and the first bevel gear drives the second bevel gear and the threaded rod to rotate in the opposite direction, so that the sealing plug moves downward. When the sealing plug drops to a certain extent, the vent hole on the vent pipe opens, and air quickly enters the preparation cavity under the action of negative pressure, so that the casting on the lower die casting mold can be easily separated from the die casting mold to prevent it from sticking to the die casting mold, and the demoulding efficiency is higher without affecting the structure and firmness of the cast mechanical parts.

[0020] 2. The mechanical material preparation mold is provided with an automatic closing mechanism at the lower end of the filling channel. When filling the molten metal, the filling tube is inserted into the filling channel, and the lower end of the filling tube squeezes the inclined surface of the closing plate, causing the closing plate to move inward, the spring to compress, and the filling channel to open. When the filling tube is pulled out, the two closing plates contact each other under the action of the spring, closing the filling channel, thereby achieving the purpose of automatically closing the filling channel and increasing the work efficiency of mold preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 A downward oblique view of the movable seat of the present invention;

[0023] Figure 3 is a cross-sectional view of the base in the present invention;

[0024] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of A;

[0025] Figure 5 It is a front view of the present invention;

[0026] Figure 6 FIG1 is a diagram showing the bonding of the lower die and the upper die in the present invention;

[0027] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of B;

[0028] Figure 8 It is a partial enlarged view of the sealing panel slot in the present invention.

[0029] In the figure: 1. Base; 2. Lower pressure casting mold; 3. Support column; 4. Moving seat; 5. Top plate; 6. Hydraulic cylinder; 7. Upper pressure casting mold; 8. Sealing plate; 9. Preparation cavity; 10. Sealing plate slot; 11. Sealing plug; 12. Driving gear plate; 13. Filling channel; 14. Support plate; 15. Cavity; 16. Driving gear; 17. Bearing seat; 18. Transmission shaft; 19. Vent pipe; 20. Vent hole; 21. Threaded rod; 22. First bevel gear; 23. Second bevel gear; 24. Bearing; 25. Spring; 26. Closing plate; 27. Rectangular groove; 28. Sealing ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Example 1:

[0032] See also Figure 1-8The top of the movable seat 4 is provided with an upper die-casting mold 2, and the lower end surface of the movable seat 4 is provided with an upper die-casting mold 7. The lower die-casting mold 2 and the upper die-casting mold 7 are provided with a preparation cavity 9 on the opposite surfaces of the lower die-casting mold 2 and the upper die-casting mold 7; the upper end of the movable seat 4 is symmetrically provided with two hydraulic cylinders 6, the upper end of the hydraulic cylinder 6 is fixedly connected to the lower end of the top plate 5, the lower end of the hydraulic cylinder 6 is fixedly connected to the upper end of the movable seat 4, and a filling channel 13 is provided in the middle of the movable seat 4, and the filling channel 13 and the preparation cavity are connected; a sealing enclosure 8 is provided at the edge of the upper die-casting mold 7, and a sealing enclosure slot 10 is provided at the edge of the lower die-casting mold 2. The bottom of the preparation cavity 9 of the lower die-casting mold 2 is symmetrically provided with a vent pipe 19, and a sealing plug 11 is movably provided in the vent pipe 19.

[0033] Cavities 15 are symmetrically provided at both ends of the base 1, and driving mechanisms for driving the sealing plug 11 to rise and fall are provided in the two cavities 15; driving gear plates 12 for driving the driving mechanisms are provided at both ends of the lower end surface of the sealing enclosure 8.

[0034] The driving mechanism includes a driving gear 16, a bearing seat 17, a transmission shaft 18, a threaded rod 21, a first bevel gear 22 and a second bevel gear 23. The transmission shaft 18 is horizontally fixed to the bottom of the cavity 15 through multiple bearing seats 17. The driving gear 16 is fixedly connected to one end of the transmission shaft 18, and the first bevel gear 22 is fixedly connected to the other end of the transmission shaft 18. The lower end of the sealing plug 11 is threadedly connected to the upper end of the threaded rod 21, and the lower end of the threaded rod 21 is rotatably connected to the bottom of the cavity 15 through a bearing 24. The second bevel gear 23 is fixedly connected to the middle part of the outer side surface of the threaded rod 21, and the first bevel gear 22 and the second bevel gear 23 are meshed for transmission. The driving gear 16 and the driving tooth plate 12 are in the same vertical plane. When the sealing enclosure 8 is inserted into the sealing enclosure slot 10, the driving tooth plate 12 and the driving gear 16 are meshed.

[0035] The vent tube 19 is a square tube, the cross-section of the sealing plug 11 is T-shaped, and the upper end of the sealing plug 11 matches the inner cavity shape of the vent tube 19. The lower end of the vent tube 19 extends into the interior of the cavity 15, and a plurality of vent holes 20 are provided on the side wall of the extended end of the vent tube 19.

[0036] Specifically, during die casting, the hydraulic cylinder 6 drives the movable seat 4 and the upper die casting mold 7 to move downward, so that the upper die casting mold 7 and the lower die casting mold 2 fit together. At this time, the sealing enclosure 8 is inserted into the sealing enclosure slot 10, and the driving gear plate 12 is engaged with the driving gear 16, and drives the driving gear 16 to rotate. The driving gear 16 drives the first bevel gear 22 to rotate, and the first bevel gear 22 drives the second bevel gear 23 to rotate. The second bevel gear 23 drives the threaded rod 21 to rotate, so that the sealing plug 11 moves upward to seal the vent pipe 19, so that a sealed preparation cavity 9 is formed between the upper die casting mold 7 and the lower die casting mold 2. Liquid metal or semi-liquid metal is filled into the preparation cavity 9 of the die casting mold at a high speed under high pressure and rapidly solidified under high pressure to obtain a mechanical material casting.

[0037] During demolding, the movable seat 4 and the upper die casting mold 7 rise, and at this time the sealing panel 8 gradually separates from the sealing panel slot 10. Before the sealing panel 8 separates from the sealing panel slot 10, a negative pressure is formed in the preparation cavity 9, and at the same time the driving gear plate 12 drives the driving gear 16 to rotate in the opposite direction, and the driving gear 16 drives the first bevel gear 22 to rotate in the opposite direction, and the first bevel gear 22 drives the second bevel gear 23 and the threaded rod 21 to rotate in the opposite direction, so that the sealing plug 11 moves downward. When the sealing plug 11 drops to a certain extent, the vent hole 20 on the vent pipe 19 opens, and under the action of negative pressure, air quickly enters the preparation cavity 9, so that the casting on the lower die casting mold 2 can be easily separated from the die casting mold.

[0038] Sealing rings 28 are provided on the two inner side surfaces of the sealing panel slot 10. The sealing rings 28 are made of rubber and are in the shape of an arc surface that bulges toward the center of the sealing panel slot 10. When the sealing panel 8 is inserted into the sealing panel slot 10, the sealing rings 28 on both sides will be tightly attached to the two sides of the sealing panel 8, making the sealing effect better.

[0039] Example 2:

[0040] See also Figure 6 and 7 This embodiment adds the following scheme on the basis of the first embodiment: an automatic closing mechanism is provided at the lower end of the interior of the filling channel 13, and the automatic closing mechanism includes rectangular grooves 27 arranged on both sides of the filling channel 13 and two closing plates 26 arranged in the two rectangular grooves 27. The closing plates 26 and the rectangular grooves 27 are slidingly arranged. A spring 25 is also provided inside the rectangular groove 27, and one end of the spring 25 is fixedly connected to the inner wall of the rectangular groove 27, and the other end of the spring 25 is fixedly connected to the inner side surface of the closing plate 26.

[0041] The outer end of the closing plate 26 is set to be inclined. When not filling, the two closing plates 26 contact each other under the action of the spring 25, closing the filling channel 13. When filling, the filling tube is inserted into the filling channel 13, and the lower end of the filling tube squeezes the inclined surface of the closing plate 26, causing the closing plate 26 to move inward, the spring 25 is compressed, and the filling channel 13 is opened.

[0042] The working principle and use process of the present invention are as follows: the mechanical material preparation mold is provided with a sealing enclosure 8 at the lower end of the upper die casting mold 7 and a sealing enclosure slot 10 at the lower die casting mold 2. During operation, the hydraulic cylinder 6 drives the movable seat 4 and the upper die casting mold 7 to move downward, so that the upper die casting mold 7 and the lower die casting mold 2 fit together. At this time, the sealing enclosure 8 is inserted into the sealing enclosure slot 10, and the driving gear plate 12 is engaged with the driving gear 16, and drives the driving gear 16 to rotate. The driving gear 16 drives the first bevel gear 22 to rotate, and the first bevel gear 22 drives the second bevel gear 23 to rotate, and the second bevel gear 23 drives the threaded rod 21 to rotate, so that the sealing plug 11 moves upward to seal the vent pipe 19, so that a sealed preparation cavity 9 is formed between the upper die casting mold 7 and the lower die casting mold 2, and the liquid metal or semi-liquid metal is filled at a high speed under high pressure. The preparation cavity 9 of the die-casting mold is filled and rapidly solidified under high pressure to obtain a mechanical material casting; when demolding, the movable seat 4 and the upper die-casting mold 7 rise, and at this time the sealing panel 8 gradually separates from the sealing panel slot 10, and before the sealing panel 8 separates from the sealing panel slot 10, a negative pressure will be formed in the preparation cavity 9, and at the same time, the driving gear plate 12 drives the driving gear 16 to rotate in the opposite direction, and the driving gear 16 drives the first bevel gear 22 to rotate in the opposite direction, and the first bevel gear 22 drives the second bevel gear 23 and the threaded rod 21 to rotate in the opposite direction, so that the sealing plug 11 moves downward. When the sealing plug 11 drops to a certain extent, the vent hole 20 on the vent pipe 19 opens, and under the action of negative pressure, air quickly enters the preparation cavity 9, so that the casting on the lower die-casting mold 2 can be easily separated from the die-casting mold, preventing it from sticking to the die-casting mold, and the demolding efficiency is higher.

[0043] The mechanical material preparation mold is provided with an automatic closing mechanism at the lower end of the inner portion of the filling channel 13. When filling the molten metal, the filling tube is inserted into the filling channel 13, and the lower end of the filling tube squeezes the inclined surface of the closing plate 26, so that the closing plate 26 moves inward, the spring 25 is compressed, and the filling channel 13 is opened. When the filling tube is pulled out, the two closing plates 26 contact each other under the action of the spring 25, closing the filling channel 13, thereby achieving the purpose of automatically closing the filling channel 13 and increasing the work efficiency of the mold preparation.

Claims

1. A mechanical material preparation mold, characterized in that: The invention comprises a base (1), wherein support columns (3) are respectively arranged at four corners of the upper end surface of the base (1), top plates (5) are fixedly arranged at the upper ends of the four support columns (3), and a movable seat (4) is slidably arranged on the four support columns (3), a lower die-casting mold (2) is arranged at the upper end surface of the base (1), an upper die-casting mold (7) is arranged at the lower end surface of the movable seat (4), and preparation cavities (9) are arranged on the opposite surfaces of the lower die-casting mold (2) and the upper die-casting mold (7); two hydraulic cylinders (6) are symmetrically arranged at the upper end of the movable seat (4), the upper ends of the hydraulic cylinders (6) are fixedly connected to the lower end of the top plate (5), and the lower ends of the hydraulic cylinders (6) are fixedly connected to the upper end of the movable seat (4), A filling channel (13) is provided in the middle of the movable seat (4), and the filling channel (13) and the preparation cavity are interconnected; a sealing enclosure (8) is provided at the edge of the upper die casting mold (7), and a sealing enclosure slot (10) is provided at the edge of the lower die casting mold (2); a vent pipe (19) is symmetrically provided at the bottom of the preparation cavity (9) of the lower die casting mold (2), and a sealing plug (11) is movably provided in the vent pipe (19); cavities (15) are symmetrically provided at both ends of the interior of the base (1), and a driving mechanism for driving the sealing plug (11) to rise and fall is provided in the two cavities (15); driving tooth plates (11) for driving the driving mechanism to work are provided at both ends of the lower end surface of the sealing enclosure (8). 2); the driving mechanism comprises a driving gear (16), a bearing seat (17), a transmission shaft (18), a threaded rod (21), a first bevel gear (22) and a second bevel gear (23); the transmission shaft (18) is transversely fixed to the bottom of the cavity (15) through a plurality of bearing seats (17); the driving gear (16) is fixedly connected to one end of the transmission shaft (18); the first bevel gear (22) is fixedly connected to the other end of the transmission shaft (18); the lower end of the sealing plug (11) is threadedly connected to the upper end of the threaded rod (21); the lower end of the threaded rod (21) is rotatably connected to the bottom of the cavity (15) through a bearing (24); the second bevel gear (23) is fixedly connected The first bevel gear (22) and the second bevel gear (23) are connected to the middle of the outer side surface of the threaded rod (21), and the first bevel gear (22) and the second bevel gear (23) are meshed for transmission, the driving gear (16) and the driving tooth plate (12) are in the same vertical plane, and when the sealing enclosure (8) is inserted into the sealing enclosure slot (10), the driving tooth plate (12) and the driving gear (16) are meshed; the vent pipe (19) is square tube-shaped, the cross section of the sealing plug (11) is T-shaped, and the upper end of the sealing plug (11) matches the inner cavity shape of the vent pipe (19), the lower end of the vent pipe (19) extends into the interior of the cavity (15), and a plurality of vent holes (20) are provided on the side wall of the extended end of the vent pipe (19);An automatic closing mechanism is provided at the lower end of the filling channel (13), the automatic closing mechanism comprising rectangular grooves (27) arranged on both sides of the filling channel (13) and two closing plates (26) arranged in the two rectangular grooves (27), the closing plates (26) and the rectangular grooves (27) being slidably arranged, a spring (25) is further provided inside the rectangular groove (27), one end of the spring (25) is fixedly connected to the inner wall of the rectangular groove (27), and the other end of the spring (25) is fixedly connected to the inner side surface of the closing plate (26); the outer end of the closing plate (26) is arranged in an inclined shape, when not filling, the two closing plates (26) contact each other under the action of the spring (25), and the filling channel (13) is closed; when filling, the filling tube is inserted into the filling channel (13), the lower end of the filling tube presses the inclined surface of the closing plate (26), so that the closing plate (26) moves inward, the spring (25) is compressed, and the filling channel (13) is opened; The method for using the mechanical material to prepare the mold includes: By arranging a sealing enclosure plate at the lower end of the upper die casting mold and arranging a sealing enclosure plate slot at the lower die casting mold, when working, the hydraulic cylinder drives the movable seat and the upper die casting mold to move downward, so that the upper die casting mold and the lower die casting mold fit together, at this time, the sealing enclosure plate is inserted into the sealing enclosure plate slot, the driving gear plate and the driving gear are meshed, and drive the driving gear to rotate, the driving gear drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the threaded rod to rotate, so that the sealing plug moves upward to seal the vent pipe, so that a sealed preparation cavity is formed between the upper die casting mold and the lower die casting mold, and liquid metal or semi-liquid metal is filled into the preparation cavity of the die casting mold at high speed under high pressure, and at high pressure A casting of mechanical materials obtained by rapid solidification under pressure; during demolding, the moving seat and the upper die casting mold rise, at this time the sealing enclosure gradually separates from the sealing enclosure slot, and before the sealing enclosure separates from the sealing enclosure slot, a negative pressure will be formed in the preparation cavity, and at the same time the driving gear plate drives the driving gear to rotate in the opposite direction, the driving gear drives the first bevel gear to rotate in the opposite direction, the first bevel gear drives the second bevel gear and the threaded rod to rotate in the opposite direction, so that the sealing plug moves downward, when the sealing plug drops to a certain extent, the vent on the vent pipe opens, and air quickly enters the preparation cavity under the action of negative pressure, so that the casting on the lower die casting mold can be easily separated from the die casting mold to prevent it from sticking to the die casting mold, and the demolding efficiency is higher.

2. A mechanical material preparation mold according to claim 1, characterized in that: The two inner side surfaces of the sealing panel slot (10) are provided with sealing rings (28), the sealing rings (28) are made of rubber material, and the sealing rings (28) are in the shape of an arc surface protruding toward the center of the sealing panel slot (10). When the sealing panel (8) is inserted into the sealing panel slot (10), the sealing rings (28) on both sides will be tightly attached to the two sides of the sealing panel (8).

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