Pump cover mold of anti-corrosion pump

Abstract

The utility model belongs to the technical field of pump cover molds, and particularly relates to a pump cover mold of an anti-corrosion pump, which comprises an upper mold, a lower mold and a base, a fixed support and a demolding device are fixedly connected on the top surface of the base, the fixed support is positioned on the right side of the demolding device and is used for fixing a holding rod of the demolding device, and support columns are fixedly connected on the periphery of the top surface of the base. A square hole is formed in the top face of the lower die, a square platform is installed in the square hole, guide grooves are formed in the periphery of the square hole, the square hole is connected with a die cavity through the guide grooves, positioning columns are arranged on the periphery of the top face of the lower die, and positioning holes are formed in the bottom face of the upper die. The upper mold is slidably connected with the lower mold through the positioning holes and the positioning columns, a pouring hole is formed in the top face of the upper mold, handles are fixedly connected to the two sides of the upper mold, a blank is poured into the mold cavity through the pouring hole, and after the blank is cooled, the upper mold is taken away, the holding rod is pulled to start the demolding device to eject out a part, and demolding is completed.

Description

Technical Field

[0001] The utility model belongs to the field of pump cover moulds, in particular to a pump cover mould for an anti-corrosion pump. Background Art

[0002] An anti-corrosion pump is a pump with anti-corrosion properties. It is mainly used to transport corrosive liquids. The most widely used anti-corrosion pumps on the market are made of stainless steel. The manufacture of anti-corrosion pumps is also inseparable from molds. The pump cover mold is a tool used to make the pump cover of an anti-corrosion pump. Pour the blank into the pump cover mold, and after the blank is formed and cooled, it is demolded from the pump cover mold to obtain the pump cover of the anti-corrosion pump.

[0003] A patent application with publication number CN216607139U discloses a pump cover mold, including a base, a lower mold and an upper mold. The base is provided with a guide rod, and the base is slidably connected through the guide rod through the guide holes of the lower mold and the upper mold. Grip rods are provided on both sides of the lower mold, the upper end surface of the lower mold is provided with a mold cavity, the lower end surface of the mold cavity is provided with a pinhole, and the upper end surface of the base is provided with a ejector pin.

[0004] In the pump cover mold of the prior art, after pouring is completed and the blank is waiting to cool, the upper mold is removed, and the lower mold is pressed down by holding the grip rod on the lower mold, so that the ejector pin on the base passes through the pinhole of the lower mold to eject the cast pump cover parts from the mold cavity to achieve the purpose of demolding. However, during the pouring process of the blank, sometimes the parts are not easy to fall off during demolding due to factors such as the dryness of the inside of the mold or poor ventilation. This makes it not only more laborious to eject the cast parts during demolding, but may even cause damage to the components on the base, affecting the normal use of the mold.

[0005] To this end, the utility model provides a pump cover mold for an anti-corrosion pump. Utility Model Content

[0006] In order to make up for the shortcomings of the prior art, the problem that demoulding the pump cover mold is laborious and may damage the mold components is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a pump cover mold of an anti-corrosion pump described in the utility model comprises an upper mold, a lower mold and a base, a demoulding device is arranged on the base, the demoulding device comprises a shell, a gripping rod, a rotating device, a gear, a rack and a square platform, the shell is fixedly connected to the top surface of the base, a rack is slidably installed inside the shell, a square platform is fixedly connected to the top of the rack, a gear is meshed with the rack, a circular rotating device is fixedly connected to the right side of the gear, the gear is fixedly connected to the gripping rod, the gripping rod is rotatably connected to the right side of the shell, a fixed support is fixedly connected to the top surface of the base, the gripping rod extends to the right side of the base through the fixed support for fixing, pillars are fixedly connected around the top surface of the base, the base is fixedly connected to the lower mold through the pillars, a square hole is opened on the top surface of the lower mold, a square platform is installed in the square hole, guide grooves are opened around the square hole, the square hole is connected to the mold cavity through the guide groove, and the lower mold The top surface is provided with positioning columns around, the bottom surface of the upper mold is provided with positioning holes, the upper mold is slidably connected with the lower mold through the positioning holes and the positioning columns, the top surface of the upper mold is provided with casting holes, and handles are fixedly connected on both sides of the upper mold; the upper mold is placed on the lower mold by aligning the positioning columns through the positioning holes, the blank is poured into the mold through the casting holes, the blank falls into the square hole and flows into the mold cavity along the guide groove, after waiting for the blank to cool, the upper mold is taken out through the handles on both sides of the upper mold, the grip rod is pulled down, the rotating device and the gear rotate counterclockwise, the gear rotates to move the rack upward, so that the square platform is lifted up in the square hole, and the parts in the mold cavity are ejected out to achieve the purpose of demolding. Since the grip rod is L-shaped, when the grip rod is pulled, the part of the grip rod extending outside the base forms a lever with the part connecting the gear and the rotating device, so the lever principle is used during demolding, which makes demolding easier and more labor-saving.

[0008] Preferably, a ratchet is fixedly connected to the gripping rod, a limiting device is fixedly connected to the outer side of the rotating device, a pawl is movably inserted inside the limiting device, and the pawl is provided with an inclined surface for clamping the ratchet. The pawl can rotate and slide inside the limiting device. After the pawl rotates and slides in the limiting device, the inclined surface on the pawl for clamping the ratchet will also rotate. When the pawl clamps the ratchet with the inclined surface facing downward, the ratchet can only rotate counterclockwise at this time. When the pawl clamps the ratchet with the inclined surface facing upward, the ratchet can only rotate clockwise. The ratchet structure formed by the pawl and the ratchet concentrates the force in the same direction during demolding, making it easier to demold the parts.

[0009] Preferably, the pawl is provided with a spring and a toggle rod, the spring is arranged at the rear end of the pawl and installed in the limit device, the toggle rod is fixed to the front end of the pawl and is perpendicular to the pawl, and the other end of the toggle rod is a spherical end. When the ratchet moves, the toggle rod moves with the pawl. When the toggle rod is triggered during movement, the toggle rod will drive the pawl to rotate. The ratchet, pawl and toggle rod constitute a direction-changing ratchet structure with an adjustable pawl. The toggle rod and the pawl influence and act on each other so that the pawl can change direction to change the movement direction of the ratchet.

[0010] Preferably, the pawl is provided with a raised cylinder that fits with the limiting device, and the end of the raised cylinder that fits with the limiting device is provided with an arc segment that pushes the raised cylinder to rotate. The limiting device includes a cylindrical segment and an arc segment. The arc segment on the limiting device includes two grooves. A parallel surface is provided between the groove tops of the two grooves, and the parallel surface is perpendicular to the axis of the cylindrical segment. The initial position of the raised cylinder is in the groove of the arc segment of the limiting device. The raised cylinder moves in the groove as the toggle rod rotates. When the raised cylinder moves from the groove on one side to the groove on the other side, the pawl will rotate 180 degrees, so that the pawl can be flipped through the cooperation of the raised cylinder, the limiting device and the spring, thereby ensuring the stable operation of the demolding device.

[0011] Preferably, the shell is L-shaped, with circular holes on both sides of the shell, a slide groove inside the shell, a slide bar on the rack, the slide groove corresponds to the rack one by one, and the rack is slidably installed in the shell through the slide bar and the slide groove, so that the rack can slide easier and more stably in the shell, and the grip rod passes through the circular hole to fix the gear and the rotating device inside the shell, and the rack and the gear are vertically arranged in the shell, so that the internal structure of the shell is compact, stable and firm, and not easily damaged.

[0012] Preferably, an A-pillar is fixedly connected to the bottom of the shell, a B-pillar is fixedly connected to the right inner wall of the shell, the ends of the A-pillar and the B-pillar away from the shell are both arc-shaped, and the A-pillar and the B-pillar are located on the same plane of the Z axis. As the toggle lever rotates with the gear, it will contact and rub against the curved surfaces on the A-pillar and the B-pillar respectively. When the grip lever is pulled downward, the gear rotates counterclockwise to move the toggle lever downward. During the downward movement of the toggle lever, the spherical end of the toggle lever contacts the curved surface of the A-pillar, causing the toggle lever to rotate 180 degrees clockwise around itself as the axis. When the grip lever is pulled to be parallel to the base, the spherical end of the toggle lever rotates to the side of the B-pillar. When the grip lever is pushed upward, the gear rotates clockwise to move the toggle lever upward. During the upward movement of the toggle lever, the spherical end of the toggle lever contacts the curved surface on the B-pillar, causing the toggle lever to rotate 180 degrees around itself as the axis again. When the grip lever is pushed to be perpendicular to the base, the spherical end of the toggle lever returns to the side of the A-pillar, realizing the linkage between the grip lever and the toggle lever, so that when the grip lever is pulled, the toggle lever can automatically flip the pawl to change the movement direction of the ratchet. There is no need to manually adjust the pawl, thereby improving work efficiency.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The pump cover mold of an anti-corrosion pump described in the utility model, by pulling the gripping rod beside the base to rotate the gear on the rack, lifts the square platform on the top of the rack to push the cast parts out of the mold to achieve demolding. The gripping rod of the mold is L-shaped. When the gripping rod is pulled, the part of the gripping rod extending outside the base forms a lever with the part connecting the gear and the rotating device, so the lever principle is used during demolding to make demolding more labor-saving and easy.

[0015] 2. The pump cover mold of an anti-corrosion pump described in the utility model can adjust the rotation direction of the rotating device through the reversing ratchet structure of the adjustable pawl in the rotating device, so that when demolding, the gripping rod can only be pressed down to better concentrate the force. Even if it is difficult to demold easily, the mold can be easily ejected, and the cooperation of the ratchet and the pawl fixes the movement range of the gripping rod, so that the operator can feel when pulling the gripping rod to the critical position when operating the mold, thereby reducing damage to the mold during the demolding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a bottom plane view of the upper mold in the utility model;

[0019] Figure 3 It is the front view of the lower mold in the utility model;

[0020] Figure 4 It is the front view of the base in the utility model;

[0021] Figure 5 This is an exploded view of the shell, grip and square platform;

[0022] Figure 6 It is an exploded view of the gear, pawl and grip;

[0023] Figure 7 is a partial cross-sectional view of the rotating device;

[0024] In the figure: 1, upper mold; 11, casting hole; 12, positioning hole; 13, handle;

[0025] 2. Lower mold; 21. Positioning column; 22. Square hole; 23. Guide groove; 24. Mold cavity;

[0026] 3. Base; 31. Pillar; 32. Fixed support;

[0027] 4. demoulding device; 41. square platform; 42. rack; 421. slide bar; 43. gear; 44. rotating device; 441. ratchet; 442. pawl; 443. spring; 444. limit device; 445. raised cylinder; 446. toggle rod; 45. grip rod; 46. housing; 461. slide groove; 462. round hole; 463. A-pillar; 464. B-pillar. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] Embodiment 1

[0030] like Figures 1 to 7 As shown, a pump cover mold of an anti-corrosion pump includes an upper mold 1, a lower mold 2 and a base 3, wherein a demoulding device 4 is arranged on the base 3, and the demoulding device 4 includes a shell 46, a gripping rod 45, a rotating device 44, a gear 43, a rack 42 and a square platform 41, wherein the shell 46 is fixedly connected to the top surface of the base 3, a rack 42 is slidably installed inside the shell 46, a square platform 41 is fixedly connected to the top of the rack 42, a gear 43 is meshed with the rack 42, a circular rotating device 44 is fixedly connected to the right side of the gear 43, the gear 43 is fixedly connected to the gripping rod 45, the gripping rod 45 is rotatably connected to the right side of the shell 46, a fixed support 32 is fixedly connected to the top surface of the base 3, and the gripping rod 43 is fixedly connected to the right side of the shell 46. 5 extends to the right side of the base 3 through the fixed support 32 for fixing, the top surface of the base 3 is fixedly connected with pillars 31, the base 3 is fixedly connected to the lower mold 2 through the pillars 31, the top surface of the lower mold 2 is provided with a square hole 22, a square platform 41 is installed in the square hole 22, the square hole 22 is provided with guide grooves 23 around, the square hole 22 is connected to the mold cavity 24 through the guide grooves 23, the top surface of the lower mold 2 is provided with positioning pillars 21 around, the bottom surface of the upper mold 1 is provided with positioning holes 12, the upper mold 1 is slidably connected to the lower mold 2 through the positioning holes 12 and the positioning pillars 21, the top surface of the upper mold 1 is provided with casting holes 11, and handles 13 are fixedly connected to both sides of the upper mold 1.

[0031] Specifically, the upper mold 1 is placed on the lower mold 2 by aligning the positioning column 21 through the positioning hole 12, and the blank is poured into the mold through the casting hole 11. The blank falls into the square hole 22 and flows into the mold cavity 24 along the guide groove 23. After waiting for the blank to cool, the upper mold 1 is removed through the handles 13 on both sides of the upper mold 1, and the grip 45 is pulled downward. The rotating device 44 and the gear 43 rotate counterclockwise, and the gear 43 rotates to move the rack 42 upward, so that the square platform 41 is lifted up in the square hole 22, and the parts in the mold cavity 24 are ejected out to achieve the purpose of demolding. Since the grip 45 is L-shaped, when the grip 45 is pulled, the grip 45 drives the movement of the gear 43 and the rack 42, and the lever principle is used, so that demolding is more labor-saving.

[0032] A ratchet 441 is fixedly connected to the grip 45 , a limiting device 444 is fixedly connected to the outer side of the rotating device 44 , a ratchet 442 is movably inserted inside the limiting device 444 , and an inclined surface for clamping the ratchet 441 is provided on the ratchet 442 .

[0033] Specifically, the pawl 442 can rotate and slide inside the limiting device 444. After the pawl 442 rotates and slides in the limiting device 444, the inclined surface on the pawl 442 used to clamp the ratchet 441 will also rotate. When the pawl 442 clamps the ratchet 441, the inclined surface faces downward, and the ratchet 441 can only rotate counterclockwise at this time. When the pawl 442 clamps the ratchet 441, the inclined surface faces upward, and the ratchet 441 can only rotate clockwise.

[0034] The pawl 442 is provided with a spring 443 and a toggle rod 446. The spring 443 is provided at the rear end of the pawl 442 and installed in the limiting device 444. Figure 6 As shown, the spring 443 is used to pull the pawl 442 to move rightward, the toggle rod 446 is fixedly connected to the front end of the pawl 442 and is perpendicular to the pawl 442, and the other end of the toggle rod 446 is a spherical end.

[0035] Specifically, when the ratchet wheel 441 is in motion, the toggle rod 446 moves together with the pawl 442 . When the toggle rod 446 is triggered, the toggle rod 446 moves with the pawl 442 .

[0036] The pawl 442 is provided with a protruding cylinder 445 that fits with the limiting device 444 , and the end of the limiting device 444 that fits with the protruding cylinder 445 is provided with an arc surface segment that pushes the protruding cylinder 445 to rotate.

[0037] Specifically, the limiting device 444 includes a cylindrical segment and an arc segment. The arc segment on the limiting device 444 includes two grooves. A parallel surface is arranged between the groove tops of the two grooves. The parallel surface is perpendicular to the axis of the cylindrical segment. The initial position of the protruding cylinder 445 is in the groove of the arc segment of the limiting device 444. The protruding cylinder 445 moves in the groove as the toggle rod 446 rotates. When the protruding cylinder 445 moves from the groove on one side to the groove on the other side, the pawl 442 rotates 180 degrees.

[0038] The shell 46 is L-shaped, with circular holes 462 on both sides of the shell 46, a slide groove 461 inside the shell 46, and a slide bar 421 on the rack 42. The rack 42 is slidably installed in the shell 46 through the slide bar 421 and the slide groove 461. The cooperation between the slide bar 421 and the slide groove 461 makes the rack 42 have guidance when the shell 46 moves, and the sliding is easier.

[0039] Embodiment 2

[0040] like Figure 7 As shown in the comparative example 1, another implementation mode of the utility model is:

[0041] The bottom of the shell 46 is fixedly connected with an A-pillar 463 , and the right inner wall of the shell 46 is fixedly connected with a B-pillar 464 . The ends of the A-pillar 463 and the B-pillar 464 away from the shell 46 are both arc-shaped, and the A-pillar 463 and the B-pillar 464 are located on the same plane of the Z axis.

[0042] Specifically, the toggle rod 446 will contact and rub against the arcuate surfaces on the A-pillar 463 and the B-pillar 464 respectively during the rotation of the gear. When the grip 45 is pulled downward, the gear 43 rotates counterclockwise to move the toggle rod 446 downward. During the downward movement of the toggle rod 446, the spherical end of the toggle rod 446 contacts the arcuate surface of the A-pillar 463, causing the toggle rod 446 to rotate 180 degrees clockwise around itself. When the grip 45 is pulled to be parallel to the base 3, the spherical end of the toggle rod 446 rotates to the side of the B-pillar 464. When the grip 45 is pushed upward, the gear 43 rotates counterclockwise to move the toggle rod 446 downward. 5, gear 43 rotates clockwise to move the toggle rod 446 upward. During the upward movement of the toggle rod 446, the spherical end of the toggle rod 446 contacts the arc surface on the B-pillar 464, and then the toggle rod 446 rotates 180 degrees around itself as the axis again. When the grip 45 is pushed to be vertical to the base 3, the spherical end of the toggle rod 446 returns to the side of the A-pillar 463, realizing the linkage between the grip 45 and the toggle rod 446, so that when the grip 45 is pulled, the toggle rod 446 can automatically flip the pawl 442, so that the pawl 442 changes the movement direction of the ratchet 441.

[0043] Working principle: place the upper mold 1 on the lower mold 2, pour the blank into the mold cavity 24 of the lower mold 2 through the casting hole 11, wait for the blank to cool, take the upper mold 1 by holding the handles 13 on both sides of the upper mold 1, pull the grip 45, and when the grip 45 is pulled down, the square platform 41 is lifted up in the square hole 22. When the grip 45 is pulled to be parallel to the base 3, the square platform 41 is also completely lifted out of the square hole 22, and the cast pump cover parts are pushed out of the lower mold 2 to complete the demoulding. At this time, push the grip 45 upward again to restore the grip 45 to a vertical state with the base 3, and the square platform 41 also drops into the square hole 22 again. At this time, the upper mold 1 is placed and the casting and demoulding work can be carried out again.

[0044] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pump cover mold for an anti-corrosion pump, characterized in that: The invention comprises an upper mold (1), a lower mold (2) and a base (3), wherein a demoulding device (4) is arranged on the base (3), and the demoulding device (4) comprises a shell (46), a gripping rod (45), a rotating device (44), a gear (43), a rack (42) and a square platform (41), wherein the shell (46) is fixedly connected to the top surface of the base (3), a rack (42) is slidably mounted inside the shell (46), the top of the rack (42) is fixedly connected to the square platform (41), the rack (42) is meshed with a gear (43), a circular rotating device (44) is fixedly connected to the right side of the gear (43), the gear (43) is fixedly connected to the gripping rod (45), the gripping rod (45) is rotatably connected to the right side of the shell (46), a fixed support (32) is fixedly connected to the top surface of the base (3), the gripping rod (45) passes through a fixed support (32) and a fixed support (32) is fixedly connected to the top surface of the base (3), and the gripping rod (45) passes through a fixed support (32) and a fixed support (32) is fixedly connected to the top surface of the base (3). A fixed support (32) extends to the right side of the base (3); pillars (31) are fixedly connected to the four sides of the top surface of the base (3); the base (3) is fixedly connected to the lower mold (2) through the pillars (31); a square hole (22) is provided on the top surface of the lower mold (2); a square platform (41) is installed in the square hole (22); a guide groove (23) is provided on the four sides of the square hole (22); the square hole (22) is connected to the mold cavity (24) through the guide groove (23); a positioning column (21) is provided on the four sides of the top surface of the lower mold (2); a positioning hole (12) is provided on the bottom surface of the upper mold (1); the upper mold (1) is slidably connected to the lower mold (2) through the positioning hole (12) and the positioning column (21); a casting hole (11) is provided on the top surface of the upper mold (1); and handles (13) are fixedly connected to both sides of the upper mold (1).

2. The pump cover mold of the anti-corrosion pump according to claim 1, characterized in that: A ratchet (441) is fixedly connected to the gripping rod (45), a limiting device (444) is fixedly connected to the outer side of the rotating device (44), a ratchet pawl (442) is movably inserted inside the limiting device (444), and an inclined surface for clamping the ratchet (441) is provided on the ratchet pawl (442).

3. The pump cover mold of the anti-corrosion pump according to claim 2, characterized in that: The ratchet (442) is provided with a spring (443) and a toggle rod (446). The spring (443) is provided at the rear end of the ratchet (442) and installed in the limiting device (444). The toggle rod (446) is fixed to the front end of the ratchet (442) and is perpendicular to the ratchet (442). The other end of the toggle rod (446) is a spherical end.

4. The pump cover mold of the anti-corrosion pump according to claim 3, characterized in that: The pawl (442) is provided with a raised cylinder (445) that fits with the limiting device (444), and the end of the limiting device (444) that fits with the raised cylinder (445) is provided with an arc surface segment that pushes the raised cylinder (445) to rotate.

5. The pump cover mold of the anti-corrosion pump according to claim 4, characterized in that: The shell (46) is L-shaped, with round holes (462) provided on both sides of the shell (46), a slide groove (461) provided inside the shell (46), and a slide bar (421) provided on the rack (42).

6. The pump cover mold of the anti-corrosion pump according to claim 5, characterized in that: An A-pillar (463) is fixedly connected to the bottom of the housing (46), and a B-pillar (464) is fixedly connected to the right inner wall of the housing (46).

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