A molding die for a shielded pump

Abstract

The invention discloses a canned pump molding die, comprising a molding cavity adapted to the canned pump structure, a mold core arranged in the molding cavity, an annular molding part arranged below the mold core, the molding part consisting of a plurality of fan-shaped parts and a plurality of rectangular parts spaced apart, the rectangular parts connected to an inclined guide assembly, the fan-shaped parts connected to a power device through an inclined lift rod arranged obliquely, the power device drives the canned pump to move upward, the moving canned pump drives the rectangular parts to move upward and inward along the inclined guide assembly to be separated from the canned pump, the power device drives the fan-shaped parts to move obliquely upward through the lift rod, and the plurality of fan-shaped parts can shrink inward to form a circular ring structure to be separated from the canned pump. The structure of the canned pump can be molded and demoulded smoothly.

Description

Technical Field

[0001] The invention relates to the field of forming dies, in particular to a forming die for a shielded pump. Background Art

[0002] The canned pump is a sealless pump. The pump and the drive motor are sealed in a pressure vessel filled with the pumped medium. The pressure vessel has only static seals and a wire group to provide a rotating magnetic field and drive the rotor. This structure eliminates the rotating shaft sealing device of the traditional centrifugal pump, so it can be completely leak-free.

[0003] like Figure 1 The canned pump structure to be produced by our company is shown in the figure, which includes a cylindrical body 01, and multiple tubular structures 02 are connected to the outer periphery of the cylindrical body 01. The multiple tubular structures 02 are oriented in different directions and are directly or indirectly connected to the cylindrical body 01. There are the following difficulties in the process of molding the above products: 1. How to mold multiple tubular structures in different directions; 2. The inner wall surface of the cylindrical body is not a smooth arc surface, but has a certain structure, and is provided with an inwardly concave annular groove. The annular groove structure limits the molded core block from axially and radially displacing outward when demolding.

[0004] In view of this, the designers of the present invention have conducted in-depth research on the above-mentioned problems. After long-term research and development, they have finally successfully developed the present invention "A molding die for a shielded pump" to solve the problems of the prior art. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a molding die for a shielded pump, which can mold the structure of the shielded pump and can be demoulded smoothly.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a molding die of a shielded pump, including a molding cavity adapted to the structure of the shielded pump, a mold core is arranged in the molding cavity, an annular molding part is arranged below the mold core, the molding part is composed of a plurality of fan-shaped parts and a plurality of rectangular parts spaced apart, the rectangular parts are connected to an inclined guide assembly, the fan-shaped parts are connected to a power device through an inclined lift rod, the power device drives the shielded pump to move upward, the moving shielded pump drives the rectangular parts to move upward and inward along the inclined guide assembly to disengage from the shielded pump, the power device drives the fan-shaped parts to move obliquely upward through the inclined lift rod, and the plurality of fan-shaped parts can be retracted to form a circular ring structure to disengage from the shielded pump.

[0007] A further preferred embodiment of the present invention is as follows: the inclined guide assembly comprises an inclined guide column and an inclined guide block, the outer side surfaces of the inclined guide column and the inclined guide block in contact with the rectangular part are inclined surfaces with the same inclination angle, the outer side surface of the inclined guide block fits with the inner side surface of the rectangular part, the inclined guide block passes through the rectangular part, the shielded pump drives the rectangular part to move upward synchronously, and the rectangular part moving upward moves obliquely along the inclined guide block to separate from the shielded pump.

[0008] A further preferred solution of the present invention is that a through hole is arranged at the center of the molded part, the core connection passes through the core push rod through the center of the through hole, and there is a spacing between the fan-shaped part, the rectangular part and the core push rod.

[0009] A further preferred embodiment of the present invention also includes a lower top plate and an upper top plate stacked on the lower top plate, the shielded pump is connected to the upper top plate through a product top rod, the core is connected to the lower top plate through a core top rod, the inclined top rod is connected to the lower top plate through a bottom rod, and the upward movement of the lower top plate will drive the upper top plate to move upward synchronously.

[0010] A further preferred solution of the present invention is that the top end of the inclined ejector rod is connected to a fan-shaped piece, the bottom end of the inclined ejector rod is movably connected to a bottom rod, and the bottom rod is vertically arranged.

[0011] A further preferred embodiment of the present invention also includes a limit plate, which is fixedly arranged above the upper top plate and below the molding cavity, and the product ejector rod, core ejector rod and inclined ejector rod all pass through the limit plate and are movable relative to the limit plate.

[0012] A further preferred solution of the present invention is that the oblique guide assembly is installed on the limiting plate.

[0013] A further preferred solution of the present invention is as follows: a travel limit rod is provided between the lower top plate and the lower template of the forming mold, and a travel limit rod is provided between the upper top plates.

[0014] A further preferred solution of the present invention is that the molding cavity is composed of an upper mold molding block, a lower mold molding block and a plurality of core-pulling sliders, and the plurality of core-pulling sliders are arranged corresponding to the tubular structural parts of the shielded pump.

[0015] A further preferred solution of the present invention is that the lower mold forming block is provided with a channel just for the product ejector rod, the mold core ejector rod and the inclined ejector rod to pass through.

[0016] Compared with the prior art, the advantage of the present invention is that a mold core is arranged in the molding cavity, and the inner wall surface of the cylindrical body is molded by the mold core structure, which can meet the molding of the inner wall of the cylindrical body of the shielded pump with irregular structure. For the molding of the annular groove, the present invention provides a molding part composed of multiple fan-shaped parts and multiple rectangular parts. First, the structure of the molding part is stable, and the molding part will not be displaced when the non-power component provides power. For the demoulding of the molding part in the shielded pump, the present invention designs a rectangular part to connect the inclined guide assembly, and the shielded pump moves upward and inward along the inclined guide block, and when the rectangular block moves a certain distance, it will directly detach from the shielded pump. The fan-shaped part is connected to the power device through an inclined lift rod, and the power device drives the fan-shaped part to move upward through the inclined lift rod. After the rectangular part detaches from the shielded pump, the multiple fan-shaped parts can shrink inward under the drive of the power device to form a circular ring structure with a smaller outer diameter than the molding part, and the shielded pump continues to move upward, and the fan-shaped part can be detached from the shielded pump. The present invention can mold the structure of the shielded pump and complete demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 It is a shielded pump structure;

[0019] Figure 2 It is a structural schematic diagram of the present invention;

[0020] Figure 3 is a cross-sectional view of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the core part;

[0022] Figure 5 It is a schematic diagram of the internal structure of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] like Figures 2 to 5As shown: a molding die of a shielded pump, including a molding cavity adapted to the structure of a shielded pump 10, a mold core 1 is arranged in the molding cavity, an annular molding part is arranged below the mold core 1, the molding part is composed of a plurality of fan-shaped parts 2 and a plurality of rectangular parts 3 spaced apart, the rectangular parts 3 are connected to an inclined guide assembly, the fan-shaped parts 2 are connected to a power device through an inclined lift rod 4, the power device drives the shielded pump 10 to move upward, the moving shielded pump 10 drives the rectangular part 3 to move upward and inward along the inclined guide assembly to separate from the shielded pump 10, the power device drives the fan-shaped parts 2 to move obliquely upward through the inclined lift rod 4, and the plurality of fan-shaped parts 2 can retract to form a circular ring structure to separate from the shielded pump 10.

[0026] The oblique guide assembly includes an oblique guide column 5 and an oblique guide block 6. The outer side surfaces of the oblique guide column 5 and the oblique guide block 6 contacting the rectangular member 3 are inclined surfaces with the same inclination angle. The outer side surface of the oblique guide block 6 fits the inner side surface of the rectangular member 3. The oblique guide block 6 passes through the rectangular member 3. The shielded pump 10 drives the rectangular member 3 to move upward synchronously. The rectangular member 3 moving upward moves along the oblique guide block 6 to be separated from the shielded pump 10. The present invention designs the oblique guide column 5 to limit the moving direction of the rectangular member 3, and designs the oblique guide block 6 to guide the rectangular member 3. It ensures that the rectangular block can move smoothly along the predetermined direction to achieve demoulding.

[0027] A through hole is set in the center of the molded part, and the mold core 1 is connected to the mold core ejector pin 7 passing through the center of the through hole, and there is a gap between the fan-shaped part 2, the rectangular part 3 and the mold core ejector pin 7. The structural setting of the molded part leaves enough space for the rectangular part 3 and the fan-shaped part 2 to move inward to realize demoulding, thereby realizing demoulding.

[0028] The present invention also includes a lower top plate 8, and an upper top plate 9 stacked on the lower top plate 8, a shielded pump 10 is connected to the upper top plate 9 through a product push rod 11, a mold core 1 is connected to the lower top plate 8 through a mold core push rod 7, and an inclined push rod 4 is connected to the lower top plate 8 through a bottom rod 12. The lower top plate 8 moves upward and drives the upper top plate 9 to move upward synchronously. By setting the upper top plate 9 and the lower top plate 8, it is ensured that when the power device is working, the upper and lower top plates 8 move synchronously, that is, the mold core 1 and the shielded pump 10 move synchronously. Subsequently, the power device drives the upper top plate 9, that is, the shielded pump 10 to move upward alone.

[0029] The top of the inclined ejector rod 4 is connected to the fan-shaped member 2, and the bottom of the inclined ejector rod 4 is movably connected to the bottom rod 12, and the bottom rod 12 is vertically arranged. In the actual working process of the present invention, since the lower top plate 8 moves vertically upward, and the inclined ejector rod 4 needs to move in an inclined direction, it is difficult to directly connect the inclined ejector rod 4 with the lower top plate 8. The present invention converts the vertical force into the inclined force through the movably connected ground rod, so that the entire movement stroke is smooth and unobstructed.

[0030] The present invention further comprises a limit plate 13, which is fixedly arranged above the upper top plate 9 and below the molding cavity, and the product ejector pin 11, the core ejector pin 7 and the inclined ejector pin 4 all pass through the limit plate 13 and are movable relative to the limit plate 13. The inclined guide assembly is mounted on the limit plate 13.

[0031] The present invention further limits the product ejector pin 11 and the mold core ejector pin 7 through the limiting plate 13, and realizes the installation of the oblique guide assembly, providing the oblique guide assembly with a downward pulling force relative to the rectangular member 3 moving upward.

[0032] A travel limit rod 14 is provided between the lower top plate 8 and the lower mold plate 18 of the forming mold, and a travel limit rod 14 is provided between the upper top plate 9 and the upper top plate 9. The present invention limits the movement displacement of the lower top plate 8 and the upper top plate 9 by the travel limit rod 14 to avoid excessive demoulding.

[0033] The molding cavity is composed of an upper mold molding block 15, a lower mold molding block 16 and a plurality of core-pulling sliders 17, and the plurality of core-pulling sliders 17 are arranged corresponding to the tubular structural parts of the shielded pump 10. The lower mold molding block 16 is provided with a channel just for the product ejector rod 11, the core ejector rod 7, and the inclined ejector rod 4 to pass through. The present invention designs the upper mold molding block 15 and the lower mold molding block 16 to mold the upper end face and the lower end face of the shielded pump 10. The outer peripheral surface and the tubular structural parts of the shielded pump 10 are molded by the core-pulling slider 17.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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.

[0036] The present invention is described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A canned motor pump forming mold, comprising a forming cavity adapted to the canned motor pump structure, wherein a mold core is arranged in the forming cavity, characterized in that An annular forming part is arranged below the mold core, and the forming part is composed of a plurality of fan-shaped parts and a plurality of rectangular parts at intervals. The rectangular parts are connected to the oblique guide assembly, and the fan-shaped parts are connected to the power device through an obliquely arranged inclined lift rod. The power device drives the shielded pump to move upward, and the moving shielded pump drives the rectangular part to move upward and inward along the oblique guide assembly to disengage from the shielded pump. The power device drives the fan-shaped part to move obliquely upward through the inclined lift rod; after the rectangular part is disengaged from the shielded pump, the plurality of fan-shaped parts can be retracted inwardly under the drive of the power device to form a circular ring structure with an outer diameter smaller than that of the forming part, and the shielded pump continues to move upward so that the fan-shaped part can be disengaged from the shielded pump; The oblique guide assembly includes an oblique guide column and an oblique guide block. The outer side surfaces of the oblique guide column and the oblique guide block that contact the rectangular part are inclined surfaces with the same inclination angle. The outer side surface of the oblique guide block fits the inner side surface of the rectangular part. The oblique guide block passes through the rectangular part. The shielded pump drives the rectangular part to move upward synchronously. The rectangular part that moves upward moves obliquely along the oblique guide block and separates from the shielded pump. A through hole is set in the center of the molded part. The core connection passes through the core push rod through the center of the through hole. There is a spacing between the fan-shaped part, the rectangular part and the core push rod.

2. A canned motor pump forming die according to claim 1, characterized in that It also includes a lower top plate and an upper top plate stacked on the lower top plate. The shielded pump is connected to the upper top plate through a product top rod, the core is connected to the lower top plate through a core top rod, and the inclined top rod is connected to the lower top plate through a bottom rod. The upward movement of the lower top plate will drive the upper top plate to move upward synchronously.

3. A canned motor pump forming die according to claim 2, characterized in that The top end of the inclined top rod is connected to the fan-shaped piece, the bottom end of the inclined top rod is movably connected to the bottom rod, and the bottom rod is vertically arranged.

4. A canned motor pump forming die according to claim 2, characterized in that It also includes a limit plate, which is fixedly arranged above the upper top plate and below the molding cavity. The product ejector rod, the core ejector rod and the inclined ejector rod all pass through the limit plate and are movable relative to the limit plate.

5. A canned motor pump forming die according to claim 4, characterized in that The oblique guide assembly is installed on the limiting plate.

6. The molding die of a canned motor pump according to claim 2, characterized in that A travel limit rod is arranged between the lower top plate and the lower template of the forming mold, and a travel limit rod is arranged between the upper top plates.

7. The molding die of a canned motor pump according to claim 1, characterized in that The molding cavity is composed of an upper mold molding block, a lower mold molding block and a plurality of core-pulling sliders, and the plurality of core-pulling sliders are arranged correspondingly to the tubular structural parts of the shielded pump.

8. A canned motor pump forming die according to claim 7, characterized in that The lower mold forming block is provided with a channel just for the product ejector rod, the mold core ejector rod and the inclined ejector rod to pass through.

Images