A metal mold for casting large-bore cylinder liners

Abstract

This invention discloses a metal mold for casting large-diameter cylinder liners, relating to the field of metal casting mold technology. The invention includes: a base platform with a lower mold fixed to its top surface; two vertical slotted plates on the top surface of the base platform, with a sliding groove formed between the two adjacent sides of the vertical slotted plates; a horizontal width plate fixed to the top surface of the two vertical slotted plates, with several electro-hydraulic rods passing through and fixed to its top surface; a convex template fixed to the bottom surface of the telescopic end of each electro-hydraulic rod; an exhaust pipe passing through and fixed to the top surface of the convex template; and a U-shaped sliding plate that contacts the top of a limiting frame during downward movement, with the limiting frame abutting against the bottom of the U-shaped sliding plate to restrict its downward movement distance, thereby avoiding the problem of poor quality in casting large-diameter cylinder liners due to excessively tight mold closing or gaps.

Description

Technical Field

[0001] This invention belongs to the field of casting metal molds, specifically relating to a metal mold for casting large-diameter cylinder liners. Background Technology

[0002] Large-bore cylinder liners refer to internal combustion engine cylinder liners with a large inner diameter. They are used in large power equipment such as ships, large mining trucks, and heavy-duty trucks. The metal mold used for casting large-bore cylinder liners is a reusable forming tool made of metal material. It uses gravity or low pressure to fill and form molten metal in a relatively static mold.

[0003] Patent CN210615027U discloses a metal mold for casting. When using the metal mold for casting, the right mold is pushed to the left by the right cylinder to close with the left mold, which is simple and convenient to operate. The left guide rod and right guide groove improve the accuracy of mold closing, and the connecting rod improves the stability after mold closing. When pouring molten metal, the liquid inlet funnel facilitates the introduction of liquid into the mold cavity after mold closing, which has high safety and strong practicality. It includes a base and a bottom column, with the bottom column fixedly set at the bottom end of the base; it also includes a left vertical plate, a left bottom plate, a left mold, a right fixed plate, a right cylinder, a right telescopic rod, a right vertical plate, a right bottom plate, a right mold, two sets of left guide rods, two sets of right guide grooves, a liquid inlet pipe, a liquid inlet funnel, an overflow pipe, two sets of connecting rods, two sets of left fixed nuts and two sets of right fixed nuts.

[0004] During the casting process of large-diameter cylinder liners, if the mold is too tight, it may cause flash in the casting or damage to the mold. If the mold is not tight and there are gaps, there will be more air bubbles inside the large-diameter cylinder liner formed by the molten metal in the lower mold, which will lead to poor quality of large-diameter cylinder liners cast by metal mold. Summary of the Invention

[0005] The purpose of this invention is to provide a metal mold for casting large-diameter cylinder liners, so as to solve the problem of poor quality of large-diameter cylinder liners caused by excessively tight or loose mold closing with gaps.

[0006] To achieve the above objectives, the present invention provides a metal mold for casting large-diameter cylinder liners, comprising: a base platform, a lower mold fixed on the top surface of the base platform, and two vertical groove plates provided on the top surface of the base platform, wherein a sliding groove is provided in the middle of the side of the two vertical groove plates that are close to each other. A horizontal width plate is fixed to the top surface of two vertical slot plates, and several electric hydraulic rods are fixed through and fixed to the top surface of the horizontal width plate. A convex template, which is fixed to the bottom surface of the telescopic end of each electro-hydraulic rod; An exhaust pipe, which penetrates and is fixed to the top surface of the protruding template; The U-shaped frame is fixed to the top surface of the convex template; A circular tube, which passes through and is fixed to the left and right sides of the inner wall of the U-shaped frame, and the outer wall of the circular tube slides in contact with the inner wall of the groove of the two vertical slot plates. Two spiral-shaped sliding plates are fixed to the outer wall of the circular tube, and the inner walls of the two spiral-shaped sliding plates slide in contact with the outer walls of the two vertical slot plates. The bent rods are fixed to the front of the two spiral-shaped sliding plates respectively, and the bottom surface of the bent rods is fixedly connected to the top surface of the convex template. Two limiting frames are fixed below the outer wall of two vertical slot plates. The convex template drives the U-shaped frame to move downward, the U-shaped frame drives the round tube to move downward, the round tube slides downward in the groove of the vertical slot plate, the round tube drives the spiral slide plate to move downward, the spiral slide plate slides downward on the vertical slot plate, the spiral slide plate drives the bent rod to move downward, the bent rod supports the convex template to move downward, and the two limiting frames are used to restrict the downward sliding of the two spiral slide plates.

[0007] In one possible implementation, the top surface of the lower mold is provided with a concave shape for a large-diameter cylinder liner, the bottom surface of the convex template is provided with a convex shape for a large-diameter cylinder liner, the lower part of the convex template is aligned with the top surface of the lower mold, and the two bent rods are used to support the convex template.

[0008] In one possible implementation, the two vertical slot plates are located on the left and right sides of the lower mold, the U-shaped frame is located behind the telescopic end of the electro-hydraulic rod, the two spiral slide plates are located above the convex template, and the two limiting frames are located above the lower mold.

[0009] In one possible implementation, the outer wall of the circular tube and the outer wall of the bent rod are provided with cooling devices for rapidly cooling the large-diameter cylinder liner formed in the lower mold, and the two ends of the circular tube are provided with deceleration devices for slowing down the pressing speed of the punch plate.

[0010] In one possible implementation, the cooling device includes two annular plates, which are respectively fixed to the outer walls of the circular tube and two bent rods; A long box, which is fixed to one side of two ring plates that are close to each other; A copper tube, which penetrates and is fixed to the top of the inside of the long box; The heat dissipation fins are fixed to the bottom surface of the long box. The ring plate drives the long box to move downward, the long box drives the copper pipe to move downward, and the long box drives the heat dissipation fins to move downward.

[0011] In one possible implementation, the bottom surface of the heat dissipation fins contacts the top surface of the convex template, the left end of the copper pipe is provided as a water inlet, the right end of the copper pipe is provided as a water outlet, the water inlet and the water outlet of the copper pipe are connected to a water pump, and the cold water flowing in the copper pipe is used to cool the convex template.

[0012] In one possible implementation, four concave plates are fixed to the top surface of the two ring plates, and an inclined plate is fixed to the inner wall of each of the four concave plates. Two baffles are fixed to the side of the four inclined plates that are close to each other. The inclined plates drive the baffles to move downward. The two baffles are located in front of and behind the convex plate.

[0013] In one possible implementation, the deceleration device includes: two connecting covers, which are fixed to both ends of the circular tube; Two vertical frames are hinged to the inner walls of two connecting covers, and a torsion spring is provided between the outer wall of the pivot of the two vertical frames and the inner wall of the two connecting covers. A horizontal plate, which is fixed to one side of two vertical frames that are close to each other; Four rollers are mounted in pairs on opposite sides of the horizontal plate. The vertical plate is fixed to the bottom surface of the two limiting frames. The connecting cover drives the vertical frame to move downward. During the downward movement, the vertical frame contacts the vertical plate. Under the restriction of the vertical plate, the vertical frame drives the horizontal plate to rotate towards the middle. The horizontal plate drives the roller to rotate on the side close to the vertical groove plate. The roller rolls against the surface of the vertical groove plate.

[0014] In one possible implementation, the two vertical slot plates are positioned on opposite sides of the four rollers on their respective movement trajectories, the two vertical frames are positioned on opposite sides of the two vertical blocks on their respective movement trajectories, and the tops of the two vertical blocks are provided with curved surfaces.

[0015] In one possible implementation, a connecting plate is fixed below each of the two vertical frames on their sides that are close to each other. An arc-shaped spring is fixed to each of the two connecting plates on their sides that are away from the two vertical frames. An arc-shaped block is fixed to each of the two U-shaped sliding plates on their sides that are away from each other. The outer walls of the two arc-shaped blocks are fixedly connected to the ends of the two arc-shaped springs that are away from the two connecting plates. The vertical frames drive the connecting plates to rotate. Under the constraint of the arc-shaped blocks, the arc-shaped springs deform. The electric hydraulic rod extends and retracts to reset. Under the elastic force of the arc-shaped springs, the arc-shaped springs return to their original position. The connecting plates drive the vertical frames to rotate and reset.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The present invention uses a base platform, a lower mold, a vertical groove plate, a horizontal width plate, an electric hydraulic rod, a convex template, an exhaust pipe, a U-shaped frame, a round tube, a spiral slide plate, and a bent rod in conjunction with a limiting frame. The convex template drives the U-shaped frame to move downward, the U-shaped frame drives the round tube to move downward, the round tube slides downward in the groove of the vertical groove plate, the round tube drives the spiral slide plate to move downward, the spiral slide plate slides downward on the vertical groove plate, the spiral slide plate drives the bent rod to move downward, and the bent rod supports the convex template to move downward, so that the limiting frame restricts the downward movement distance of the spiral slide plate, so that the lower mold is attached to the top of the convex template, preventing the mold from being too tight or having gaps, which would cause poor quality of the large-diameter cylinder liner in the metal mold casting.

[0018] (2) By setting up a cooling device, the ring block, strip plate and long box cooperate with copper pipe. The ring plate drives the long box to move downward, the long box drives the copper pipe to move downward, the long box drives the heat dissipation fins to move downward, and cold water circulates in the copper pipe. The cold water circulating in the copper pipe carries away the heat on the long box, preventing the metal solution in the lower mold from cooling slowly and causing poor efficiency in casting large-diameter cylinder liners in the metal mold.

[0019] (3) The present invention uses a cooling device to make the concave plate and the inclined plate cooperate with the baffle. The inclined plate drives the baffle to move downward. The baffle blocks the front and rear of the lower mold, blocking the overflow of the molten metal in the lower mold, preventing workers from being burned by the overflow of the molten metal in the lower mold and causing accidental injury to workers during the casting of metal mold.

[0020] (4) The present invention, through the setting of the deceleration device, enables the cooperation between the vertical frame, the horizontal plate, the roller and the vertical block plate. The connecting cover drives the vertical frame to move downward. During the downward movement, the vertical frame contacts the vertical block plate. Under the restriction of the vertical block plate, the vertical frame drives the horizontal plate to rotate towards the middle. The horizontal plate drives the roller to rotate on the side close to the vertical groove plate. The roller rolls against the surface of the vertical groove plate. Under the action of friction, the speed of the sliding plate sliding downward is buffered, allowing the convex template to slowly close above the lower mold, preventing the convex template from pressing the lower mold downward too quickly and causing the surface of the lower mold to be damaged by collision.

[0021] (5) By setting a deceleration device, the present invention enables the cooperation between the ring plate and the long box, the vertical frame drives the connecting plate to rotate, and under the restriction of the arc strip block, the arc-shaped spring sheet deforms, the electric hydraulic rod retracts and resets, and under the elastic force of the arc-shaped spring sheet, the arc-shaped spring sheet returns to its original state, and the connecting plate drives the vertical frame to rotate and reset, preventing the vertical frame from being offset due to inconvenience in resetting. Attached Figure Description

[0022] Figure 1 Overall diagram provided for embodiments of this application;

[0023] Figure 2 The overall bottom surface provided for the embodiments of this application;

[0024] Figure 3 Overall back view provided for embodiments of this application;

[0025] Figure 4 This is a cross-sectional view of the vertical slot plate provided in an embodiment of this application;

[0026] Figure 5 A diagram of a cooling device provided in an embodiment of this application;

[0027] Figure 6 Provided for the embodiments of this application Figure 5 Enlarged view of a portion of point A in the middle;

[0028] Figure 7 A diagram of a speed reduction device provided in an embodiment of this application;

[0029] Figure 8 Provided for the embodiments of this application Figure 7 Enlarged view of section B in the middle.

[0030] Explanation of key figure labels:

[0031] 1. Base platform; 2. Lower mold; 3. Vertical slot plate; 4. Horizontal width plate; 5. Electro-hydraulic rod; 6. Convex template; 7. Exhaust pipe; 8. U-shaped frame; 9. Round tube; 10. U-shaped sliding plate; 11. Bent rod; 12. Limiting frame; 13. Cooling device; 131. Ring plate; 132. Long box; 133. Copper pipe; 134. Heat dissipation fins; 135. Concave plate; 136. Inclined plate; 137. Baffle; 14. Speed ​​reduction device; 141. Connecting cover; 142. Vertical frame; 143. Horizontal plate; 144. Roller; 145. Vertical block plate; 146. Connecting plate; 147. Arc-shaped spring sheet; 148. Arc strip block. Detailed Implementation

[0032] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0033] like Figure 1-8 As shown, one embodiment of the present invention is: a metal mold for casting large-diameter cylinder liners, comprising: a base 1, a lower mold 2 fixed on the top surface of the base 1, and two vertical groove plates 3 provided on the top surface of the base 1, with a sliding groove provided in the middle of the side of the two vertical groove plates 3 that are close to each other. A horizontal width plate 4 is fixed to the top surface of two vertical slot plates 3, and several electric hydraulic rods 5 are fixed through and fixed to the top surface of the horizontal width plate 4. The protruding template 6 is fixed to the bottom surface of the telescopic end of each electro-hydraulic rod 5; Exhaust pipe 7, which penetrates and is fixed to the top surface of the protruding template 6; U-shaped frame 8, the U-shaped frame 8 is fixed to the top surface of the convex template 6; The round tube 9 passes through and is fixed to the left and right sides of the inner wall of the U-shaped frame 8. The outer wall of the round tube 9 slides in contact with the inner wall of the sliding groove of the two vertical groove plates 3. Two spiral-shaped sliding plates 10 are fixed to the outer wall of the circular tube 9, and the inner walls of the two spiral-shaped sliding plates 10 slide in contact with the outer walls of the two vertical groove plates 3. The bent rod 11 is fixed to the front of the two spiral slide plates 10 respectively, and the bottom surface of the bent rod 11 is fixedly connected to the top surface of the convex template 6. Two limiting brackets 12 are fixed below the outer wall of the two vertical slot plates 3. The two limiting brackets 12 are used to restrict the two spiral slide plates 10 from sliding downward. The top surface of the lower mold 2 is provided with a concave shape for a large-diameter cylinder liner, and the bottom surface of the convex mold plate 6 is provided with a convex shape for a large-diameter cylinder liner. The bottom of the convex mold plate 6 is aligned with the top surface of the lower mold 2. Two bent rods 11 are used to support the convex mold plate 6. Two vertical slot plates 3 are located on the left and right sides of the lower mold 2. The U-shaped frame 8 is located behind the telescopic end of the electric hydraulic rod 5. Two spiral sliding plates 10 are located above the convex mold plate 6. Two limit frames 12 are located above the lower mold 2. When casting using this metal mold, the base platform 1 supports the lower mold 2. The operator pours the molten metal into the recess in the lower mold 2. The base platform 1 supports the vertical slot plate 3, which in turn supports the horizontal width plate 4. The vertical slot plate 3 also supports the limiting frame 12. The operator activates the electric hydraulic rod 5, causing its telescopic end to move downwards. This telescopic end of the electric hydraulic rod 5 drives the protruding plate 6, which in turn drives the vent pipe 7 downwards. The protruding plate 6 then drives the U-shaped frame 8 downwards, which in turn drives the circular tube 9 downwards. The circular tube 9 slides downwards within the groove of the vertical slot plate 3, ensuring the downward trajectory of the protruding plate 6. The circular tube 9 then drives the return slide plate 10 downwards. The U-shaped slide plate 10 slides downward on the vertical slot plate 3. The U-shaped slide plate 10 drives the bent rod 11 to move downward. The bent rod 11 supports the convex plate 6 to move downward. During the downward movement, the U-shaped slide plate 10 contacts the upper part of the limiting frame 12. The air hole of the convex plate 6 is located at the uppermost point of contact with the molten metal. The exhaust pipe 7 discharges the gas in the lower mold 2. The limiting frame 12 abuts against the lower part of the U-shaped slide plate 10, so that the limiting frame 12 restricts the downward movement distance of the U-shaped slide plate 10, allowing the lower mold 2 to stick to the upper part of the convex plate 6. This avoids the problem of poor quality of large-diameter cylinder liners caused by excessively tight mold closing or gaps during the casting process. Cooling devices 13 are provided on the outer walls of the round tube 9 and the outer walls of the bent rod 11. The cooling devices 13 are used to quickly cool the large-diameter cylinder liner formed in the lower mold 2. Reduction devices 14 are provided at both ends of the round tube 9. The reduction devices 14 are used to slow down the downward pressing speed of the punch plate 6.

[0034] Working principle: The operator pours the molten metal into the recess in the lower mold 2. The telescopic end of the electric hydraulic rod 5 drives the convex plate 6, which in turn drives the exhaust pipe 7 to move downward. The convex plate 6 drives the U-shaped frame 8 to move downward, which in turn drives the round tube 9 to move downward. The round tube 9 slides downward in the groove of the vertical slot plate 3, which in turn drives the spiral slide plate 10 to move downward. The spiral slide plate 10 slides downward on the vertical slot plate 3, which in turn drives the bent rod 11 to move downward. The bent rod 11 supports the convex plate 6 to move downward. During the downward movement, the spiral slide plate 10 contacts the upper part of the limit frame 12. The exhaust pipe 7 discharges the gas in the lower mold 2, and the limit frame 12 abuts against the lower part of the spiral slide plate 10.

[0035] like Figure 1-8 As shown, based on the above embodiments, in another embodiment of the present invention, the cooling device 13 includes: two annular plates 131, which are respectively fixed to the outer walls of the circular tube 9 and the two bent rods 11; The long box 132 is embedded in the two ring plates 131 on one side that are close to each other; Copper tube 133, which penetrates and is fixed to the top of the inside of the long box 132; Heat dissipation fins 134 are fixed to the bottom surface of the long box 132. The bottom surface of the heat dissipation fins 134 is in contact with the top surface of the convex template 6. The left end of the copper pipe 133 is set as a water inlet, and the right end of the copper pipe 133 is set as a water outlet. The water inlet and water outlet of the copper pipe 133 are connected to a water pump. The cold water flowing in the copper pipe 133 is used to cool the convex template 6. As the ring plate 131 moves the long box 132 downwards, the ring plate 131 moves the concave plate 135 downwards, the concave plate 135 moves the inclined plate 136 downwards, and the inclined plate 136 moves the baffle 137 downwards. The baffle 137 blocks the front and rear of the lower mold 2, preventing the molten metal overflowing from the lower mold 2. This avoids the problem of workers being burned by the molten metal overflowing from the lower mold 2 during the casting process of large-diameter cylinder liners, thus preventing accidental injury to workers during metal mold casting.

[0036] Four concave plates 135 are fixed on the top surface of the two ring plates 131. An inclined plate 136 is fixed on the inner wall of each of the four concave plates 135. Two baffles 137 are fixed on the side of the four inclined plates 136 that are close to each other. The two baffles 137 are located in front of and behind the convex plate 6.

[0037] The speed reduction device 14 includes two connecting covers 141, which are fixed to both ends of the circular tube 9; Two vertical frames 142 are hinged to the inner walls of two connecting covers 141, and a torsion spring is provided between the outer wall of the pivot of the two vertical frames 142 and the inner wall of the two connecting covers 141. A horizontal plate 143 is fixed to one side of the two vertical frames 142 that are close to each other; Four rollers 144 are installed in pairs on the side of the horizontal plate 143 that are close to each other. Vertical plate 145 is fixed on the bottom surface of two limit frames 12 respectively. The side of the two vertical slot plates 3 that is far apart from each other is on the movement trajectory of the outer wall of the four rollers 144. The side of the two vertical frames 142 that is far apart from each other is on the movement trajectory of the side of the two vertical plates 145 that is close to each other. The top of the two vertical plates 145 is provided with an arc surface. As the U-shaped frame 8 moves the round tube 9 downwards, the round tube 9 moves the connecting cover 141 downwards, the connecting cover 141 moves the vertical frame 142 downwards, the vertical frame 142 moves the horizontal plate 143 downwards, and the horizontal plate 143 moves the roller 144 downwards. During the downward movement, the vertical frame 142 contacts the vertical block plate 145. Under the constraint of the vertical block plate 145, the vertical frame 142 rotates towards the center within the connecting cover 141. The vertical frame 142 moves the horizontal plate 143 towards the center, and the horizontal plate 143 moves the roller 144 towards the side closest to the vertical slot plate 3. The roller 144 rolls against the surface of the vertical slot plate 3. Under the action of friction, the downward sliding speed of the U-shaped sliding plate 10 is buffered, so that the convex template 6 slows down during the downward movement, allowing the convex template 6 to slowly close above the lower mold 2. This avoids the problem of the convex template 6 pressing down on the lower mold 2 too quickly during the casting process of the large-diameter cylinder liner, causing damage to the surface of the lower mold 2.

[0038] A connecting plate 146 is fixed below each of the two vertical frames 142 on the side that is close to each other. An arc-shaped spring piece 147 is fixed on each of the two connecting plates 146 away from the two vertical frames 142. An arc-shaped block 148 is fixed on each of the two U-shaped sliding plates 10 on the side that is far from each other. The outer walls of the two arc-shaped blocks 148 are fixedly connected to the ends of the two arc-shaped spring pieces 147 away from the two connecting plates 146. While the connecting cover 141 drives the vertical frame 142 to move downward, the vertical frame 142 drives the connecting plate 146 to move downward, the connecting plate 146 drives the arc-shaped spring piece 147 to move downward, and the U-shaped sliding plate 10 drives the arc-shaped block 148 to move downward. When the vertical frame 142 rotates in the connecting cover 141, the vertical frame 142 drives the connecting plate 146 to rotate. Under the restriction of the arc-shaped block 148, the arc-shaped spring piece 147 deforms. After casting is completed, the electric hydraulic rod 5 retracts and resets. Under the elastic force of the arc-shaped spring piece 147, the arc-shaped spring piece 147 returns to its original position, and the connecting plate 146 drives the vertical frame 142 to rotate and reset. This avoids the problem of the vertical frame 142 being difficult to reset after casting, causing the vertical frame 142 to shift.

[0039] Working principle: The round tube 9 and the bent rod 11 drive the ring plate 131 to move downward, the ring plate 131 drives the long box 132 to move downward, the long box 132 drives the copper tube 133 to move downward, the long box 132 drives the heat dissipation fins 134 to move downward, the cold water circulates in the copper tube 133, the heat of the molten metal in the lower mold 2 is transferred to the convex plate 6, the convex plate 6 transfers heat to the heat dissipation fins 134, the heat dissipation fins 134 transfer heat to the long box 132, and the cold water circulating in the copper tube 133 carries away the heat on the long box 132; The ring plate 131 drives the concave plate 135 to move downward, the concave plate 135 drives the inclined plate 136 to move downward, the inclined plate 136 drives the baffle 137 to move downward, and the baffle 137 blocks the front and rear of the lower mold 2. The round tube 9 drives the connecting cover 141 to move downward, the connecting cover 141 drives the vertical frame 142 to move downward, the vertical frame 142 drives the horizontal plate 143 to move downward, the horizontal plate 143 drives the roller 144 to move downward, the vertical frame 142 contacts the vertical block plate 145 during the downward movement, under the restriction of the vertical block plate 145, the vertical frame 142 rotates towards the middle in the connecting cover 141, the vertical frame 142 drives the horizontal plate 143 to rotate towards the middle, the horizontal plate 143 drives the roller 144 to rotate on the side close to the vertical groove plate 3, the roller 144 rolls against the surface of the vertical groove plate 3, under the action of friction, the downward sliding speed of the spiral slide plate 10 is buffered, so that the convex plate 6 will slow down the movement speed during the downward movement; When the connecting plate 146 drives the arc-shaped spring piece 147 to move downward, and the vertical frame 142 rotates in the connecting cover 141, the vertical frame 142 drives the connecting plate 146 to rotate. Under the restriction of the arc block 148, the arc-shaped spring piece 147 deforms, and the electric hydraulic rod 5 retracts and resets. Under the elastic force of the arc-shaped spring piece 147, the arc-shaped spring piece 147 returns to its original state, and the connecting plate 146 drives the vertical frame 142 to rotate and reset.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A metal mold for casting a large-bore cylinder liner, characterized by, include: A base platform (1) is provided with a lower mold (2) fixed on its top surface. Two vertical groove plates (3) are provided on the top surface of the base platform (1). A sliding groove is provided in the middle of the two vertical groove plates (3) that are close to each other. A horizontal width plate (4) is fixed on the top surface of two vertical slot plates (3), and a number of electric hydraulic rods (5) are fixed through the top surface of the horizontal width plate (4). A convex template (6) is fixed to the bottom surface of the telescopic end of each electro-hydraulic rod (5); Exhaust pipe (7), the exhaust pipe (7) penetrates and is fixed to the top surface of the convex template (6); U-shaped frame (8), the U-shaped frame (8) is fixed to the top surface of the convex template (6); The round tube (9) passes through and is fixed on the left and right sides of the inner wall of the U-shaped frame (8), and the outer wall of the round tube (9) slides in contact with the inner wall of the groove of the two vertical groove plates (3); Two spiral slide plates (10) are fixed to the outer wall of the circular tube (9), and the inner walls of the two spiral slide plates (10) slide in contact with the outer walls of the two vertical slot plates (3). The bent rod (11) is fixed on the front of the two spiral slide plates (10) respectively, and the bottom surface of the bent rod (11) is fixedly connected to the top surface of the convex template (6); Two limiting brackets (12) are fixed below the outer wall of the two vertical slot plates (3) and the two limiting brackets (12) are used to restrict the two spiral slide plates (10) from sliding downward. The two ends of the circular tube (9) are provided with a deceleration device (14), which is used to reduce the pressing speed of the convex template (6); The deceleration device (14) includes two connecting covers (141), which are fixed at both ends of the round tube (9); Two vertical frames (142) are hinged to the inner walls of two connecting covers (141), and torsion springs are provided between the outer walls of the pivots of the two vertical frames (142) and the inner walls of the two connecting covers (141); A horizontal plate (143) is fixed to one side of the two vertical frames (142) that are close to each other; Four rollers (144) are mounted in pairs on the side of the horizontal plate (143) that are close to each other. Vertical block plate (145), the vertical block plate (145) is fixed to the bottom surface of the two limiting frames (12); The two vertical slot plates (3) are on the movement trajectory of the outer wall of the four rollers (144) on the side that is far apart from each other, and the two vertical frames (142) are on the movement trajectory of the side that is close to each other on the side that is close to each other. The top of the two vertical blocks (145) is provided with an arc surface. A connecting plate (146) is fixed below each of the two vertical frames (142) on the side that is close to each other. An arc-shaped spring piece (147) is fixed on the side of each of the two connecting plates (146) away from the two vertical frames (142). An arc-shaped block (148) is fixed on the side of each of the two spiral slides (10) away from each other. The outer walls of the two arc-shaped blocks (148) are fixedly connected to the ends of the two arc-shaped spring pieces (147) away from the two connecting plates (146).

2. A metal mold for casting a large-bore cylinder liner according to claim 1, characterized by, The top surface of the lower mold (2) is provided with a concave shape for a large-diameter cylinder liner, and the bottom surface of the convex template (6) is provided with a convex shape for a large-diameter cylinder liner. The bottom of the convex template (6) is aligned with the top surface of the lower mold (2), and the two bent rods (11) are used to support the convex template (6).

3. A metal mold for casting a large-bore cylinder liner according to claim 2, characterized by The two vertical slot plates (3) are located on the left and right sides of the lower mold (2), the U-shaped frame (8) is located behind the telescopic end of the electric hydraulic rod (5), the two spiral slide plates (10) are located above the convex template (6), and the two limiting frames (12) are located above the lower mold (2).

4. A metal mold for casting a large-bore cylinder liner according to claim 3, characterized by Cooling devices (13) are provided on the outer wall of the round tube (9) and the outer wall of the bent rod (11). The cooling devices (13) are used to quickly cool the large-diameter cylinder liner formed in the lower mold (2).

5. A metal mold for casting large-diameter cylinder liners according to claim 4, characterized in that, The cooling device (13) includes two ring plates (131), which are respectively fixed to the outer walls of the round tube (9) and the two bent rods (11); A long box (132) is fixedly embedded on one side of two ring plates (131) that are close to each other; A copper tube (133) is inserted through and fixed to the top of the inside of the long box (132); Heat dissipation fins (134) are fixed to the bottom surface of the elongated box (132).

6. A metal mold for casting large-diameter cylinder liners according to claim 5, characterized in that, The bottom surface of the heat dissipation fins (134) is in contact with the top surface of the convex template (6). The left end of the copper pipe (133) is set as a water inlet, and the right end of the copper pipe (133) is set as a water outlet. The water inlet and the water outlet of the copper pipe (133) are connected to a water pump. The cold water flowing in the copper pipe (133) is used to cool the convex template (6).

7. A metal mold for casting large-diameter cylinder liners according to claim 6, characterized in that, Four concave plates (135) are fixed on the top surface of the two ring plates (131), and an inclined plate (136) is fixed on the inner wall of each of the four concave plates (135). Two baffles (137) are fixed on the side of the four inclined plates (136) that are close to each other. The two baffles (137) are located in front of and behind the convex plate (6).

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