Forming die for stainless steel pump shell production

Abstract

The utility model discloses a forming mold for stainless steel pump shell production. The forming mold comprises a bottom plate, a guide structure is installed at the top end of the bottom plate, a top plate is arranged at one end of the guide structure, a lower mold is installed at the top end of the bottom plate, a demolding structure is arranged at one end in the lower mold, and a hole is formed in one end of the bottom plate. According to the utility model, the mounting plate is mounted in the lower mold, so that after a user uses a device to perform injection molding on the pump shell, the molded pump shell can be clamped in the groove in the lower mold, and after an ejector pin of an injection molding machine passes through a hole formed in the bottom of the bottom plate to be in contact with the mounting plate, the pump shell is clamped in the groove; according to the pump shell demolding device, a demolding column mounted at the top end of a mounting plate can be pushed, so that a formed pump shell can be demolded through pushing of the demolding column, at the moment, an injection molding machine is disengaged, an extruded reset spring is reset after demolding, and the mounting plate and the demolding column can be reset; in this way, the purpose of conveniently and rapidly demolding the formed pump shell is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of forming molds, in particular to a forming mold for producing a stainless steel pump casing. Background Art

[0002] The main body of the existing ordinary pump casing lining plastic mold is an upper and lower structure, which mainly includes an upper mold, a lower mold, a side pressure cover, a die, a main core mold, a positioning mandrel and a side core. When the mold is assembled with the metal pump casing and molded, the press acts on the die and applies pressure. Under the action of pressure, the high-temperature plastic flows to the gaps in the mold, and is demolded after cooling, and the plastic lining layer can be formed.

[0003] To this end, a submersible sewage pump casing forming mold is disclosed in the patent specification with publication number CN205236773U, which belongs to the technical field of submersible sewage pump casing manufacturing. A submersible sewage pump casing forming mold comprises a punch and a die, the outer surface of the punch matches with the inner surface of the submersible sewage pump casing, the inside of the die has a recessed inner cavity, the inner surface of the inner cavity of the die matches with the outer surface of the submersible sewage pump casing, the upper part and the lower part of the semi-finished part of the submersible sewage pump casing are squeezed by the punch and the die respectively, the upper part of the semi-finished part is bulged under the internal pressure of the punch, and the lower part of the semi-finished part is contracted under the external pressure of the die. The utility model utilizes the mold to make the semi-finished part expand and contract upward, and through the expansion and contraction accompanied by the metal flow hydraulic up and down process, the wall thickness of the formed product is basically consistent, and the error of the wall thickness is controlled within ±0.2mm. In the expansion and contraction forming process, the extrusion amount is relatively small, and the mold is not easy to be damaged, thereby achieving good processability and economy.

[0004] The above-mentioned prior art mentions that the semi-finished product can be expanded and contracted upward through the mold, and the wall thickness of the molded product is basically consistent through the upward and downward expansion and contraction accompanied by the hydraulic up and down process of metal flow. However, when the device is put into use, it is impossible to quickly demold the molded pump casing, and it is impossible to seal it when injecting the raw materials, and it is impossible to position and guide the upper and lower molds. Utility Model Content

[0005] The utility model aims to provide a forming die for producing a stainless steel pump casing, so as to solve the defect that it is inconvenient to quickly demould the formed pump casing in the prior art.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a forming mold for producing a stainless steel pump casing, comprising a bottom plate, a guide structure is installed on the top of the bottom plate, a top plate is arranged at one end of the guide structure, an upper mold is fixed at the bottom end of the top plate, and a sealing structure is arranged at one end of the top plate;

[0007] The sealing structure comprises a pouring port, a mounting groove, a mounting spring and a sealing block, wherein the pouring port is arranged at the top of the top plate, the mounting groove is arranged at one end inside the top plate, a mounting spring is installed at one end of the mounting groove, and a sealing block is arranged at one side of the mounting spring;

[0008] A lower mold is installed on the top of the bottom plate, a demoulding structure is arranged at one end inside the lower mold, and a hole is arranged at one end of the bottom plate.

[0009] When in use, first, a mounting plate is installed inside the lower mold. After the user uses the device to injection-mold the pump casing, the molded pump casing will be engaged in the groove inside the lower mold. After the ejector pin of the injection molding machine contacts the mounting plate through the hole set at the bottom of the bottom plate, the demolding column installed on the top of the mounting plate can be pushed, so that the molded pump casing can be demolded by the push of the demolding column. At this time, the injection molding machine is disengaged, and the reset spring squeezed after demolding is reset, so that the position of the mounting plate and the demolding column can be returned to its original position.

[0010] Preferably, the demoulding structure includes a mounting plate, a demoulding column and a return spring. The mounting plate is installed at one end inside the lower mold, a demoulding column is installed at the top of the mounting plate, and a return spring is arranged at the top of the mounting plate, so that the pump casing can be quickly demoulded.

[0011] Preferably, the demoulding posts are installed on the top of the mounting plate, and the demoulding posts are arranged at equal intervals about the central axis of the mounting plate, which can achieve a better demoulding effect.

[0012] Preferably, the guide structure includes a guide column, a guide rod, a limit spring and a ring. The guide column is installed at the top of the base plate. The top of the guide column is provided with a guide rod. The top of the guide column is provided with a limit spring. The top of the limit spring is provided with a ring, which can guide the docking of the upper and lower molds.

[0013] Preferably, the guide posts are arranged at the top end of the base plate, and the guide posts are symmetrically distributed about the central axis of the base plate, so that the guiding can be more accurate.

[0014] Preferably, the collar is installed on the top of the limit spring, and the collar is in the shape of a circular ring and can separate the upper and lower molds through its own shape and the limit spring.

[0015] Preferably, the mounting spring is in a spiral shape, and the mounting spring and the sealing block form an elastic connection and can be reset.

[0016] The utility model provides a molding die for producing a stainless steel pump casing, which has the advantages that: by installing a mounting plate inside a lower mold, when a user uses a device to perform injection molding on the pump casing, the molded pump casing will be clamped in a groove inside the lower mold, and after the ejector pin of the injection molding machine contacts the mounting plate through a hole arranged at the bottom of the bottom plate, the demoulding column installed on the top of the mounting plate can be pushed, so that the molded pump casing can be demoulded by the push of the demoulding column, and at this time, the injection molding machine is disengaged, and the reset spring squeezed after demoulding is reset, so that the positions of the mounting plate and the demoulding column can be reset, so as to achieve the purpose of facilitating the rapid demoulding of the molded pump casing;

[0017] By setting a pouring port at the top of the top plate, the user can irrigate the injection molding raw material into the closed mold groove through the pouring port. In order to prevent the injection molding raw material from overflowing, a mounting groove is set at the position of the pouring port, and a mounting spring and a sealing block are installed inside the mounting groove. The top of the sealing block is set to an arc shape. When the pouring head is inserted for pouring, the sealing block can be squeezed to shrink into the inside of the mounting groove. After the pouring is completed, the sealing block is reset by the mounting spring, so that the multiple groups of sealing blocks are closed to seal the pouring port, thereby achieving the purpose of facilitating the sealing of the device during pouring;

[0018] A guide rod is installed at the top of the guide column, and a hole with the same size as the guide rod diameter is provided at one end of the top plate. The hole can be used to guide the mold when it is docked, which can prevent positional displacement when the upper and lower molds are spliced. By installing a limit spring and a ring at one end of the guide rod, the upper and lower molds can be quickly disassembled after the pump casing is molded, thereby improving the efficiency of the device in molding the pump casing, thereby achieving the purpose of facilitating the device to guide the molding of the pump casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 For the utility model Figure 2 A partial cross-section at the center is an enlarged structural diagram;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the guide structure of the utility model;

[0023] Figure 5 It is a schematic diagram of a partial cross-sectional structure of the demoulding structure of the utility model in a front view.

[0024] Explanation of the reference numerals in the figure: 1. bottom plate; 2. lower mold; 3. demoulding structure; 301. top plate; 302. demoulding column; 303. reset spring; 4. guide structure; 401. guide column; 402. guide rod; 403. limit spring; 404. collar; 5. hole; 6. top plate; 7. upper mold; 8. sealing structure; 801. pouring port; 802. mounting groove; 803. mounting spring; 804. sealing block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 The utility model provides an embodiment: a forming mold for producing a stainless steel pump casing, comprising a bottom plate 1, and a guide structure 4 is installed on the top of the bottom plate 1.

[0027] Reference Figure 1-Figure 2 and Figure 4 As shown, the guide structure 4 includes a guide column 401, a guide rod 402, a limit spring 403 and a collar 404. The guide column 401 is installed at the top of the base plate 1. The guide column 401 is set at the top of the base plate 1 and is symmetrically distributed about the central axis of the base plate 1.

[0028] A guide rod 402 is disposed at the top of the guide column 401 , a limit spring 403 is disposed at the top of the guide column 401 , a collar 404 is disposed at the top of the limit spring 403 , and the collar 404 is installed at the top of the limit spring 403 , and the collar 404 is in a circular ring shape.

[0029] A guide rod 402 is installed on the top of the guide column 401, and a hole with the same diameter as the guide rod 402 is provided at one end of the top plate 6. The hole can be used to guide the mold when it is docked, which can prevent position deviation when the upper and lower molds are spliced. In addition, a limit spring 403 and a ring 404 are installed at one end of the guide rod 402, so that the upper and lower molds can be quickly disassembled after the pump casing is molded, thereby improving the efficiency of the device in molding the pump casing.

[0030] A top plate 6 is disposed at one end of the guide structure 4 , an upper mold 7 is fixed to the bottom end of the top plate 6 , and a sealing structure 8 is disposed at one end of the top plate 6 .

[0031] Reference Figure 1-Figure 3As shown, the sealing structure 8 includes a pouring port 801, a mounting groove 802, a mounting spring 803 and a sealing block 804. The pouring port 801 is arranged at the top of the top plate 6, the mounting groove 802 is arranged at one end inside the top plate 6, and a mounting spring 803 is installed at one end of the mounting groove 802. The mounting spring 803 is spiral in shape, and the mounting spring 803 and the sealing block 804 form an elastic connection. The sealing block 804 is arranged on one side of the mounting spring 803.

[0032] By setting a pouring port 801 at the top of the top plate 6, the user can irrigate the injection molding material into the closed mold groove through the pouring port 801. In order to prevent the injection molding material from overflowing, a mounting groove 802 is set at the position of the pouring port 801, and a mounting spring 803 and a sealing block 804 are installed inside the mounting groove 802. The top of the sealing block 804 is set to an arc shape. When the pouring head is inserted for pouring, the sealing block 804 can be squeezed to make the sealing block 804 shrink to the inside of the mounting groove 802. After the pouring is completed, the mounting spring 803 resets the sealing block 804, so that the multiple groups of sealing blocks 804 are closed to seal the pouring port 801.

[0033] Reference Figure 1-Figure 2 and Figure 5 As shown, a lower mold 2 is installed at the top of the base plate 1, and a demolding structure 3 is arranged at one end inside the lower mold 2. The demolding structure 3 includes a mounting plate 301, a demolding column 302 and a reset spring 303. The mounting plate 301 is installed at one end inside the lower mold 2, and a demolding column 302 is installed at the top of the mounting plate 301. The demolding columns 302 are installed at the top of the mounting plate 301, and the demolding columns 302 are arranged at equal intervals about the central axis of the mounting plate 301.

[0034] A return spring 303 is disposed at the top of the mounting plate 301 , and a hole 5 is disposed at one end of the bottom plate 1 .

[0035] By installing a mounting plate 301 inside the lower mold 2, when the user uses the device to injection-mold the pump casing, the molded pump casing will be engaged in the groove inside the lower mold 2. After the ejector pin of the injection molding machine contacts the mounting plate 301 through the hole 5 set at the bottom of the base plate 1, the demolding column 302 installed on the top of the mounting plate 301 can be pushed, so that the molded pump casing can be demolded by the push of the demolding column 302. At this time, the injection molding machine is disengaged, and the reset spring 303 squeezed after demolding is reset, so that the positions of the mounting plate 301 and the demolding column 302 can be returned to their original positions.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A forming die for producing a stainless steel pump casing, comprising a base plate (1); Features: A guide structure (4) is installed at the top end of the bottom plate (1), a top plate (6) is arranged at one end of the guide structure (4), an upper mold (7) is fixed at the bottom end of the top plate (6), and a sealing structure (8) is arranged at one end of the top plate (6); The sealing structure (8) comprises a pouring port (801), a mounting groove (802), a mounting spring (803) and a sealing block (804); the pouring port (801) is arranged at the top end of the top plate (6); the mounting groove (802) is arranged at one end inside the top plate (6); a mounting spring (803) is installed at one end of the mounting groove (802); and a sealing block (804) is arranged on one side of the mounting spring (803); A lower mold (2) is installed at the top of the bottom plate (1), a demoulding structure (3) is arranged at one end inside the lower mold (2), and a hole (5) is arranged at one end of the bottom plate (1).

2. The forming die for producing a stainless steel pump casing according to claim 1, characterized in that: The demoulding structure (3) comprises a mounting plate (301), a demoulding column (302) and a return spring (303); the mounting plate (301) is mounted at one end inside the lower mold (2); the demoulding column (302) is mounted at the top end of the mounting plate (301); and the return spring (303) is arranged at the top end of the mounting plate (301).

3. The forming die for producing a stainless steel pump casing according to claim 2, characterized in that: The demoulding columns (302) are installed on the top of the mounting plate (301), and the demoulding columns (302) are arranged at equal intervals with respect to the central axis of the mounting plate (301).

4. The forming die for producing a stainless steel pump casing according to claim 1, characterized in that: The guide structure (4) comprises a guide column (401), a guide rod (402), a limit spring (403) and a collar (404); the guide column (401) is mounted on the top of the base plate (1); the guide rod (402) is arranged at the top of the guide column (401); the limit spring (403) is arranged at the top of the guide column (401); and the collar (404) is arranged at the top of the limit spring (403).

5. The forming die for producing a stainless steel pump casing according to claim 4, characterized in that: The guide posts (401) are arranged at the top end of the bottom plate (1), and the guide posts (401) are symmetrically distributed about the central axis of the bottom plate (1).

6. The forming die for producing a stainless steel pump casing according to claim 4, characterized in that: The collar (404) is installed on the top end of the limit spring (403), and the collar (404) is in the shape of a circular ring.

7. The forming die for producing a stainless steel pump casing according to claim 1, characterized in that: The mounting spring (803) is in a spiral shape, and the mounting spring (803) and the sealing block (804) form an elastic connection.

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