Casting equipment for ball valve casting

Abstract

The invention relates to the field of casting equipment, in particular to casting equipment for ball valve castings. The technical problems that an existing sand mold casting method is low in mold matching efficiency, an upper mold is difficult to be fully aligned with a lower mold in the mold matching process, and the mold clamping quality is affected are solved. Casting equipment for ball valve castings comprises a shell, a discharging table is connected to the shell, a sliding plate is slidably connected to the discharging table, a box door is rotatably connected to the shell, two conveying belts are arranged on one side of the shell, and two guide frames are connected to the shell. The upper die and the lower die can slide to the first supporting plate and the second supporting plate along the guide frame respectively, the second supporting plate moves to drive the lower die to move together so that the lower die can fall on the shell, the first supporting plate drives the upper die to move together, then the upper die makes contact with the lower die, and after the first supporting plate is separated from the upper die, the upper die and the lower die can be clamped. In this way, continuous clamping work of the upper die and the lower die can be achieved, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of casting equipment, in particular to a casting equipment for ball valve castings. Background Art

[0002] Ball valves are key components commonly used in fluid control systems, and ball valve castings are one of the important parts of ball valves. Ball valve castings are made of high-strength, corrosion-resistant materials such as stainless steel, carbon steel or alloy steel. Common methods include lost wax casting, lost foam casting and sand casting. In the sand casting method, the cavity and core of the casting are formed in the mold by special molding sand, and then the prepared mold is matched, and the molten metal liquid is injected into the mold to form the casting. In the existing sand casting method, during the mold matching process, a crane is usually used to lift the upper mold and move it above the lower mold, so that the upper mold and the lower mold are engaged, resulting in low mold matching efficiency. In the mold matching process, it is difficult for the upper mold to be fully aligned with the lower mold, which affects the mold engagement quality. Summary of the invention

[0003] In view of the defects in the prior art, the purpose of the present invention is to provide a casting equipment for ball valve castings that can realize the continuous engagement of the upper mold and the lower mold, improve the work efficiency, and correct the position of the upper mold and the lower mold during the engagement process of the upper mold and the lower mold, thereby improving the engagement quality of the upper mold and the lower mold.

[0004] The technical solution is: a casting equipment for ball valve castings, including an outer shell, a discharge platform connected to the outer shell, a slide plate slidably connected to the discharge platform, a box door rotatably connected to the outer shell, two conveyor belts are arranged on one side of the outer shell, two guide frames are connected to the outer shell, the two guide frames are respectively connected to the two conveyor platforms, and a lifting mechanism, a guiding mechanism and a locking mechanism are arranged on the outer shell.

[0005] As a further preferred embodiment, the lifting mechanism includes a sliding frame, two groups of sliding frames are slidingly connected in the outer shell, two pallets one are connected between one group of sliding frames, and two pallets two are connected between the other group of sliding frames, four electric hydraulic cylinders one and four electric hydraulic cylinders two are connected in the outer shell, the two pallets one are respectively connected to the four electric hydraulic cylinders two, and the two pallets two are respectively connected to the four electric hydraulic cylinders two, four limit frames are connected in the outer shell, the two pallets one are slidingly connected to the four limit frames, and the two pallets two are slidingly connected to the four limit frames, upper molds are placed on the two pallets one, and lower molds are placed on the two pallets two.

[0006] As a further preferred scheme, the guiding mechanism includes a positioning frame, which is slidably connected to the outer shell, three pressure springs are connected between the positioning frame and the outer shell, two support plates one and two support plates two are connected to limiting strips, each limiting strip is slidably connected to a buffer plate, and a reset spring one is connected between the buffer plate and the limiting strip.

[0007] As a further preferred solution, four locking holes are provided on the positioning frame.

[0008] As a further preferred solution, the locking mechanism includes a guide rod, two guide rods are slidably connected to the outer shell, two locking rods are connected to the two guide rods, four locking rods are slidably connected to the outer shell, and two positioning columns are connected to the two support plates.

[0009] As a further preferred scheme, it also includes a correction mechanism, which includes a top block, two top blocks are connected in the outer shell, two support plates are connected to mounting blocks, two mounting blocks are slidably connected to correction rods, two correction rods are connected to positioning rods, and reset springs are connected between the correction rods and the mounting blocks.

[0010] As a further preferred solution, the plate surfaces of the correction rod and the positioning rod located on the same support plate are maintained at the same horizontal plane.

[0011] As a further preferred solution, it also includes a column gear, the box door is connected to the column gear, and the slide plate is connected to the rack.

[0012] The present invention has the following advantages: 1. The upper mold and the lower mold will slide along the guide frame to the pallet one and the pallet two respectively. The movement of the pallet two drives the lower mold to move together. After the lower mold contacts the shell, the two pallets two and the lower mold are separated, so that the lower mold falls on the shell. The pallet one drives the upper mold to move together, and then the upper mold will contact the lower mold. After the pallet one and the upper mold are separated, the reset spring one resets and drives the buffer plate on the pallet one to reset, and the upper mold and the lower mold will engage. In this way, the continuous engagement of the upper mold and the lower mold can be achieved, thereby improving work efficiency.

[0013] 2. During the movement of pallet 2, it will move along the slide groove on the limit frame. During the movement of the lower mold, it will move to the middle of the positioning frame. The positioning frame will gradually contact the lower mold, so that the position of the lower mold will be corrected. The limit frame will gradually squeeze pallet 1, so that the two pallets will move away from each other. The upper mold moves between the positioning frames. Under the action of the positioning frames, the upper mold will be aligned with the lower mold. In this way, the positions of the upper mold and the lower mold can be corrected during the engagement process of the upper mold and the lower mold, thereby improving the engagement quality of the upper mold and the lower mold.

[0014] 3. When the support plate 1 drives the upper die to move toward the lower die, the correction rod on the support plate 1 will be squeezed by the top block, so that the two correction rods will move toward each other, and the reset spring 2 will be compressed. The movement of the two correction rods will drive the movement of the positioning rods, so that the two correction rods will correct the position of the lower die and the two positioning rods will correct the position of the upper die. In this way, the clamping quality of the upper die and the lower die can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the housing, the unloading platform and the slide plate of the present invention.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the housing and the guide frame of the present invention.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the electric hydraulic cylinder 1, the electric hydraulic cylinder 2 and the sliding frame of the present invention.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the limit frame, guide rods and positioning frame of the present invention.

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the positioning frame, pressure spring, mounting block and correction rod of the present invention.

[0021] Figure 7 It is a schematic diagram of the split three-dimensional structure of the lifting mechanism of the present invention.

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the second support plate, the positioning column, the locking rod and the guide rod of the present invention.

[0023] Fig. 9 It is a three-dimensional structural schematic diagram of the top block, positioning frame and pressure spring of the present invention.

[0024] Fig.10 It is a three-dimensional structural schematic diagram of the limit strip, buffer plate and return spring of the present invention.

[0025] Fig.11 It is a schematic diagram of the disassembled three-dimensional structure of the guide mechanism of the present invention.

[0026] Fig.12 It is a schematic diagram of the disassembled three-dimensional structure of the locking mechanism of the present invention.

[0027] Fig.13 It is a schematic diagram of the disassembled three-dimensional structure of the correction mechanism of the present invention.

[0028] Fig.14 It is a three-dimensional structural schematic diagram of the slide plate, rack, box door and column gear of the present invention.

[0029] Fig.15 For the present invention Figure 1 Schematic diagram of the enlarged three-dimensional structure at point A in the middle.

[0030] Among them: 1-housing, 2-unloading platform, 3-slide plate, 4-box door, 41-conveyor belt, 5-guide frame, 61-slide frame, 62-pallet one, 63-pallet two, 64-electric hydraulic cylinder one, 65-electric hydraulic cylinder two, 66-limit frame, 7-upper die, 8-lower die, 91-positioning frame, 92-pressure spring, 93-limiting strip, 94-buffer plate, 95-reset spring one, 101-guide rod, 102-locking rod, 103-positioning column, 111-top block, 112-mounting block, 113-correction rod, 114-positioning rod, 115-reset spring two, 12-column gear, 13-rack. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Embodiment 1: A casting device for ball valve castings, such as Figure 1-Figure 12 As shown, it includes a shell 1, a discharge platform 2 is connected to the shell 1, a slide plate 3 is slidably connected to the discharge platform 2, a box door 4 is rotatably connected to the shell 1, two conveyor belts 41 are arranged on one side of the shell 1, two guide frames 5 are connected to the shell 1, and the two guide frames 5 are respectively connected to the two conveyor platforms, and a lifting mechanism, a guiding mechanism and a locking mechanism are arranged on the shell 1. The lifting mechanism is used to drive the casting mold to move, the guiding mechanism is used to assist the casting mold to align, and the locking mechanism is used to fix the lifting mechanism.

[0033] The lifting mechanism includes a sliding frame 61. Two groups of sliding frames 61 are slidably connected in the housing 1. Each group has two sliding frames 61, and there are four sliding frames 61 in total. Two pallets 1 62 are connected between one group of sliding frames 61. The two pallets 1 62 are symmetrically arranged. Two pallets 2 63 are connected between another group of sliding frames 61. The two pallets 2 63 are symmetrically arranged. Four electric hydraulic cylinders 1 64 and four electric hydraulic cylinders 2 65 are connected in the housing 1. The two pallets 1 62 are respectively connected to the four electric hydraulic cylinders. Two pallets 65 are connected by bolts, two pallets 2 63 are respectively connected to four electric hydraulic cylinders 2 65 by bolts, four limit frames 66 are connected by bolts in the shell 1, each limit frame 66 is provided with two slide grooves, two pallets 1 62 are respectively connected to the slide grooves of the four limit frames 66 located at the top by sliding, two pallets 2 63 are respectively connected to the slide grooves of the four limit frames 66 located at the bottom by sliding, upper molds 7 are placed on the two pallets 1 62, and lower molds 8 are placed on the two pallets 2 63.

[0034] The guiding mechanism includes a positioning frame 91, which is slidably connected to the outer shell 1. The positioning frame 91 is used to correct the casting mold. Three pressure springs 92 are connected between the positioning frame 91 and the outer shell 1. The two support plates 1 62 and the two support plates 2 63 are connected with limit strips 93 by bolts. A buffer plate 94 is slidably connected to each limit strip 93. A reset spring 1 95 is connected between the buffer plate 94 and the limit strip 93.

[0035] The positioning frame 91 is provided with four locking holes for locking the positioning frame 91 .

[0036] The locking mechanism includes a guide rod 101, two guide rods 101 are slidably connected to the outer shell 1, two locking rods 102 are connected to the two guide rods 101, the locking rods 102 are used to lock the positioning frame 91, the four locking rods 102 are slidably connected to the outer shell 1, and two positioning columns 103 are fixedly connected to the two support plates 63.

[0037] At first, the locking rod 102 is inserted into the locking hole of the positioning frame 91, and the positioning frame 91 is restricted. The user moves the upper mold 7 of the sand casting to the conveyor belt 41 above and the lower mold 8 of the sand casting to the conveyor belt 41 below. Under the action of the conveyor belt 41, the upper mold 7 and the lower mold 8 move toward the direction close to the guide frame 5 respectively. After the upper mold 7 and the lower mold 8 contact the two guide frames 5 respectively, the guide frame 5 will preliminarily guide the position of the upper mold 7 and the lower mold 8. Subsequently, the upper mold 7 and the lower mold 8 will slide along the guide frame 5 to the pallet 1 62 and the pallet 2 63 respectively. The upper mold 7 and the lower mold 8 that slide onto the pallet 1 62 and the pallet 2 63 will squeeze the buffer plate 94. The buffer plate 94 is squeezed and extends into the limit strip 93, and the return spring 1 95 is compressed. Thereby, the upper die 7 and the lower die 8 are buffered. After the upper die 7 and the lower die 8 are stagnant on the pallet 1 62 and the pallet 2 63, the user first controls the telescopic rod of the electric hydraulic cylinder 2 65 to retract. The retraction of the telescopic rod of the electric hydraulic cylinder 2 65 drives two of the sliding frames 61 to move in the direction close to the electric hydraulic cylinder 2 65. The movement of the sliding frame 61 drives the two pallets 2 63 to move together. The movement of the pallet 2 63 drives the lower die 8 to move. During the movement of the pallet 2 63, it moves along the slide groove on the limit frame 66. During the movement of the lower die 8, it moves to the middle of the positioning frame 91. The positioning frame 91 gradually contacts with the lower die 8, so that the position of the lower die 8 is corrected, and the pallet 2 63 continues to drive the lower die 8 to move together. The two pallets 2 63 are gradually squeezed by the limit frame 66, so that the two pallets The two plates 63 will move in the direction away from each other, so that the two pallets 63 will gradually separate from the lower mold 8. After the lower mold 8 contacts the shell 1, the two pallets 63 separate from the lower mold 8, and the reset spring 1 95 resets and drives the buffer plate 94 on the pallet 63 to reset, so that the lower mold 8 falls on the shell 1. The user turns off the electric hydraulic cylinder 1 64 and controls the telescopic rod of the electric hydraulic cylinder 2 65 to retract. The retraction of the telescopic rod of the electric hydraulic cylinder 2 65 will drive the other two slide frames 61 to move in the direction close to the electric hydraulic cylinder 2 65. The movement of the slide frame 61 drives the pallet 1 62 and the upper mold 7 to move together. The two pallets 1 62 move along the slide groove of the limit frame 66. During the movement of the upper mold 7 in the direction close to the lower mold 8, the limit frame 66 will gradually squeeze the pallet 1 62, so that the two pallets The upper mold 7 moves to the positioning frame 91, and the upper mold 7 is aligned with the lower mold 8 under the action of the positioning frame 91. Then the upper mold 7 contacts with the lower mold 8. After the pallet 1 62 and the upper mold 7 are separated, the reset spring 1 95 resets and drives the buffer plate 94 on the pallet 1 62 to reset, and the upper mold 7 and the lower mold 8 are engaged. Then the user controls the telescopic rod of the electric hydraulic cylinder 1 64 to continue to retract the pallet 2 63 to continue to move, and the positioning column 103 on the pallet 2 63 is stuck in the guide rod 101. The positioning column 103 continues to move to squeeze the guide rod 101, so that the two guide rods 101 move toward each other. The movement of the guide rod 101 drives the locking rod 102 to move, so that the locking rod 102 is separated from the locking hole of the positioning frame 91.The pallet 2 63 continues to move and contacts the positioning frame 91. The positioning frame 91 is squeezed by the pallet 2 63 and extends into the shell 1. The pressure spring 92 is compressed. After the positioning frame 91 is fully extended into the shell 1, the user controls the telescopic rods of the electric hydraulic cylinder 1 64 and the electric hydraulic cylinder 2 65 to stop retracting. Then, the user opens the box door 4. The user slides the slide plate 3 into the shell 1 so that the slide plate 3 connects the unloading platform 2 and the shell 1. The user can move the engaged upper mold 7 and the lower mold 8 out of the shell 1 through the slide plate 3. Then, the user removes the engaged upper mold 7 and the lower mold 8. The user resets the slide plate 3 and closes the box door 4. Then, the user controls the telescopic rods of the electric hydraulic cylinder 1 64 and the electric hydraulic cylinder 2 65 to reset. The telescopic rods of the electric hydraulic cylinder 1 64 and the electric hydraulic cylinder 2 65 reset and drive the sliding frame 61 and the pallet 2 63 to reset. The plate 1 62 and the support plate 2 63 are reset, and the support plate 2 63 gradually separates from the positioning frame 91. The pressure spring 92 resets and drives the positioning frame 91 to reset and extend out of the housing 1. The support plate 2 63 resets and drives the positioning column 103 to reset. The positioning column 103 resets and drives the guide rod 101 and the locking rod 102 to reset, so that the locking rod 102 is re-engaged in the locking hole of the positioning frame 91, so that the positioning frame 91 is restricted again. After the support plate 1 62 and the support plate 2 63 are reset, the electric hydraulic cylinder 1 64 and the electric hydraulic cylinder 2 65 stop running, and the clamping work of the upper mold 7 and the lower mold 8 is completed once. In this way, the continuous clamping work of the upper mold 7 and the lower mold 8 can be realized, and the work efficiency is improved. In the process of clamping the upper mold 7 and the lower mold 8, the positions of the upper mold 7 and the lower mold 8 can be corrected, and the clamping quality of the upper mold 7 and the lower mold 8 is improved.

[0038] Embodiment 2: Based on embodiment 1, Figure 6-Figure 15 As shown, a correction mechanism is also included. A correction mechanism is provided on the support plate 62. The correction mechanism is used to further align the casting mold. The correction mechanism includes a top block 111. Two top blocks 111 are connected by bolts in the outer shell 1. The two support plates 62 are connected by bolts with mounting blocks 112. The two mounting blocks 112 are slidably connected with correction rods 113. The two correction rods 113 are connected with positioning rods 114 by bolts. A reset spring 115 is connected between the correction rod 113 and the mounting block 112.

[0039] The plate surfaces of the correction rod 113 and the positioning rod 114 located on the same support plate 62 are maintained at the same horizontal plane.

[0040] The box door 4 also includes a column gear 12 , which is connected to the box door 4 , and a rack 13 is connected to the slide plate 3 via bolts.

[0041] When the support plate 1 62 drives the upper mold 7 to move toward the lower mold 8, the correction rod 113 on the support plate 1 62 will be squeezed by the top block 111, so that the two correction rods 113 will move toward each other, and the return spring 2 115 will be compressed. The movement of the two correction rods 113 will drive the positioning rod 114 to move, so that the two correction rods 113 will correct the position of the lower mold 8, and the two positioning rods 114 will correct the position of the upper mold 7. Since the plate surfaces of the positioning rods 114 and the correction rods 113 are flush, the upper mold 7 and the lower mold 8 will be further aligned. After the correction rod 113 and the top block 111 are disengaged, the reset spring 115 is reset to drive the correction rod 113 to reset. In this way, the engagement quality of the upper mold 7 and the lower mold 8 can be further improved. During the unloading process, when the user opens the box door 4, the box door 4 rotates to drive the column gear 12 to rotate. The column gear 12 rotates and engages with the rack 13, so that the slide plate 3 will be driven by the rack 13 to slide into the shell 1. When the box door 4 is closed, the column gear 12 reverses to drive the rack 13 and the slide plate 3 to reset. In this way, the user can avoid forgetting to reset the sliding slide plate 3.

[0042] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A casting device for ball valve castings, characterized in that: The utility model comprises a shell (1), a discharge platform (2) is connected to the shell (1), a slide plate (3) is slidably connected to the discharge platform (2), a box door (4) is rotatably connected to the shell (1), two conveyor belts (41) are provided on one side of the shell (1), two guide frames (5) are connected to the shell (1), the two guide frames (5) are respectively connected to the two conveyor platforms, and a lifting mechanism, a guiding mechanism and a locking mechanism are provided on the shell (1).

2. A casting device for ball valve castings according to claim 1, characterized in that: The lifting mechanism comprises a sliding frame (61), two groups of sliding frames (61) are slidably connected in the outer shell (1), two first pallets (62) are connected between one group of sliding frames (61), and two second pallets (63) are connected between the other group of sliding frames (61), four electric hydraulic cylinders (64) and four electric hydraulic cylinders (65) are connected in the outer shell (1), the two first pallets (62) are respectively connected to the four second pallets (65), and the two second pallets (63) are respectively connected to the four second electric hydraulic cylinders (65), four limit frames (66) are connected in the outer shell (1), the two first pallets (62) are respectively slidably connected to the four limit frames (66), and the two second pallets (63) are respectively slidably connected to the four limit frames (66), an upper mold (7) is placed on the two first pallets (62), and a lower mold (8) is placed on the two second pallets (63).

3. A casting device for ball valve castings according to claim 2, characterized in that: The guide mechanism comprises a positioning frame (91), the positioning frame (91) is slidably connected to the housing (1), three pressure springs (92) are connected between the positioning frame (91) and the housing (1), two support plates 1 (62) and two support plates 2 (63) are connected to limit strips (93), each limit strip (93) is slidably connected to a buffer plate (94), and a return spring 1 (95) is connected between the buffer plate (94) and the limit strip (93).

4. A casting device for ball valve castings according to claim 3, characterized in that: The positioning frame (91) is provided with four locking holes.

5. A casting device for ball valve castings according to claim 3, characterized in that: The locking mechanism comprises a guide rod (101), two guide rods (101) are slidably connected to the housing (1), two locking rods (102) are connected to the two guide rods (101), the four locking rods (102) are slidably connected to the housing (1), and two positioning columns (103) are connected to the two support plates (63).

6. A casting device for ball valve castings according to claim 5, characterized in that: The device also includes a correction mechanism, which includes a top block (111). Two top blocks (111) are connected inside the housing (1), two support plates (62) are connected to mounting blocks (112), the two mounting blocks (112) are slidably connected to correction rods (113), the two correction rods (113) are connected to positioning rods (114), and a second return spring (115) is connected between the correction rods (113) and the mounting blocks (112).

7. A casting device for ball valve castings according to claim 6, characterized in that: The plate surfaces of the correction rod (113) and the positioning rod (114) located on the same support plate (62) are maintained at the same horizontal plane.

8. A casting device for ball valve castings according to claim 6, characterized in that: It also includes a column gear (12), the box door (4) is connected to the column gear (12), and the slide plate (3) is connected to a rack (13).

Images