Mould of pump cover casting wax mould for vacuum pump

Abstract

The utility model relates to the field of casting, in particular to a mould of a pump cover casting wax mould for a vacuum pump, which comprises an upper mould, a lower mould and a core-pulling component, the core-pulling component is fixed by the upper mould and the lower mould, the core-pulling component comprises a first footing mould core, a second footing mould core, a water inlet mould core and a water outlet mould core, the die further comprises a built-in block, an inner core and a partition plate, one end of the built-in block makes contact with the upper die, the other end of the built-in block makes contact with the lower die, the inner core is arranged between the upper die and the lower die and used for forming an inner cavity, and the partition plate is arranged between the inner core and the lower die. According to the utility model, through the arrangement of the core-pulling assembly, core pulling can be realized through the plurality of dispersed mold cores, so that a wax mold is not easy to damage during core pulling; in addition, due to the arrangement of the upper half wax injection port and the lower half wax injection port, wax can be injected into the mold through one wax injection port, so that the use efficiency of the mold is improved.

Description

Technical Field

[0001] The utility model relates to the field of casting, in particular to a mold of a wax mold of a pump cover casting for a vacuum pump. Background Art

[0002] As an important part of the vacuum pump, the performance of the vacuum pump cover directly affects the operating efficiency and life of the vacuum pump. The pump cover made of low-temperature wax has excellent sealing and low-temperature resistance, showing significant advantages in processes requiring high vacuum and low-temperature environments, providing efficient and stable solutions for various industrial applications.

[0003] To cast the vacuum pump cover by casting, it is necessary to first make a wax mold of the vacuum pump cover so as to facilitate the subsequent casting of the sample by the lost wax method. However, the existing wax mold core pulling is inconvenient and easy to damage the wax mold, and the upper and lower molds each require a wax injection port for wax injection, and the mold utilization rate is not high. Therefore, it is necessary to improve such a structure to overcome the above defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a mold for a wax mold of a pump cover casting for a vacuum pump. The utility model is achieved through the following technical solutions:

[0005] A mold for a wax mold of a pump cover casting for a vacuum pump, comprising an upper mold, a lower mold and a core pulling assembly, wherein the upper mold and the lower mold fix the core pulling assembly, and the core pulling assembly comprises a first base core, a second base core, an inlet core and an outlet core, and also comprises an inner block, an inner core and a partition, wherein one end of the inner block contacts the upper mold and the other end contacts the lower mold, the inner core is arranged between the upper mold and the lower mold for forming an inner cavity, and the partition is arranged between the inner core and the lower mold.

[0006] In the above technical scheme: the upper mold and the lower mold are used to form the main body of the pump cover wax mold; the core pulling assembly is used to form the internal cavity shape of the pump cover wax mold; the first base core and the second base core are used to form the depression at the base; the water inlet core is used to form the water inlet pipe; the water outlet core is used to form the water outlet pipe; the built-in plate is used to position the upper mold and the lower mold to ensure the relative position of the two; the inner core is used to form the internal shape of the pump cover wax mold; the partition is used to limit the height of the edges inside the pump cover wax mold.

[0007] The utility model is further configured as follows: an upper groove is arranged on the upper die, and a lower groove is arranged on the lower die of the second foot core.

[0008] In the above technical solution: the upper groove and the lower groove are used to form the external shape of the wax mold of the pump cover.

[0009] The utility model is further configured as follows: a first auxiliary core and a second auxiliary core are also wrapped on the water inlet core, the first auxiliary core and the second auxiliary core are both semicircular arc-shaped, and the two are combined into a circular ring.

[0010] In the above technical solution: the first auxiliary core and the second auxiliary core are used to form the annular protrusion on the outer wall surface of the water inlet of the pump cover wax mold.

[0011] The utility model is further configured as follows: a third auxiliary core and a fourth auxiliary core are also wrapped on the water outlet core, and the third auxiliary core and the fourth auxiliary core are both semicircular arc-shaped, and the two are combined into a circular ring.

[0012] In the above technical solution: the third auxiliary core and the fourth auxiliary core are used to form the annular protrusion on the outer wall surface of the water outlet of the pump cover wax mold.

[0013] The utility model is further configured as follows: the inner core is clamped with the upper die.

[0014] In the above technical solution: the inner core is stuck in the upper mold, so that the position of the inner core is fixed.

[0015] The utility model is further configured as follows: the shape of the partition plate corresponds to the shape of the lower mold.

[0016] In the above technical solution: the shape of the partition corresponds to the lower mold, so that the partition will not affect the placement of the inner core after contacting the lower mold.

[0017] The utility model is further configured as follows: an upper wax injection opening is provided on the upper groove, a lower wax injection opening is provided on the groove, and the upper wax injection opening and the lower wax injection opening are combined into a cylindrical hole.

[0018] In the above technical solution: the upper wax injection opening and the lower wax injection opening are used for molding the wax injection opening.

[0019] The utility model discloses a wax mold for a pump cover casting for a vacuum pump. Compared with the prior art:

[0020] 1. The utility model provides a core pulling assembly, so that core pulling can be achieved through a plurality of dispersed cores, so that core pulling is not easy to damage the wax mold;

[0021] 2. The utility model also provides an upper wax injection port and a lower wax injection port, so that wax can be injected into the interior of the mold through one wax injection port, thereby improving the use efficiency of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the utility model;

[0023] Figure 2 A schematic diagram of another viewing angle of the present invention;

[0024] Figure 3 It is a schematic diagram of removing the lower mold of the utility model;

[0025] Figure 4 It is a schematic diagram of removing the upper mold and the lower mold of the utility model;

[0026] Figure 5 It is a schematic diagram of the partition of the utility model.

[0027] The corresponding component names represented by the numbers and letters in the figure are: 10-upper mold; 101-upper half wax injection port; 20-lower mold; 201-lower half wax injection port; 30-core pulling assembly; 301-first base core; 302-second base core; 303-water inlet core; 304-water outlet core; 305-first auxiliary core; 306-second auxiliary core; 307-third auxiliary core; 308-fourth auxiliary core; 40-built-in block; 50-inner core; 60-partition. DETAILED DESCRIPTION

[0028] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0029] like Figure 1-5As shown, the utility model proposes a mold of a wax mold for a pump cover casting for a vacuum pump, comprising an upper mold 10, a lower mold 20 and a core pulling assembly 30, wherein the upper mold 10 and the lower mold 20 fix the core pulling assembly 30, and the core pulling assembly 30 comprises a first base core 301, a second base core 302, an inlet core 303 and an outlet core 304, and also comprises an internal block 40, an inner core 50 and a partition 60, wherein one end of the internal block 40 contacts the upper mold 10, and the other end contacts the lower mold 20, the inner core 50 is arranged between the upper mold 10 and the lower mold 20 for forming an inner cavity, and the partition 60 is arranged between the inner core 50 and the lower mold 20. Among them, the first base core 301 is in the shape of a quadrangular prism on one side away from the outer wall of the upper mold 10; the second base core 302 is consistent with the shape of the first base core 301; the water inlet core 303 is cylindrical; the water outlet core 304 is also cylindrical; the shape of the built-in block 40 is not a rotating body, preferably, a first clamping groove is provided on the upper mold 10, and a second clamping groove is provided on the lower mold 20, and the built-in block 40 is clamped with the first clamping groove and the second clamping groove at the same time; the inner core 50 is in the shape of an arc surface, and the shape of its arc surface is consistent with the shape of the inner wall surface of the wax mold to be cast, and a depression is also provided in the middle of the arc surface of the inner core 50 to form a connecting hole for setting the blade.

[0030] like Figure 1-5 As shown, the utility model provides a wax mold for a pump cover casting for a vacuum pump, wherein the upper mold 10 is provided with an upper groove, and the lower mold 20 is provided with a lower groove.

[0031] like Figure 1-5 As shown, the utility model proposes a mold of a wax mold for a pump cover casting for a vacuum pump, wherein the water inlet core 303 is also wrapped with a first auxiliary core 305 and a second auxiliary core 306, and the first auxiliary core 305 and the second auxiliary core 306 are both semicircular arcs, and the two are combined into a circular ring.

[0032] like Figure 1-5 As shown, the utility model proposes a mold of a wax mold for a pump cover casting for a vacuum pump, wherein the outlet core 304 is also wrapped with a third auxiliary core 307 and a fourth auxiliary core 308, and the third auxiliary core 307 and the fourth auxiliary core 308 are both semicircular arcs, and the two are combined into a circular ring.

[0033] like Figure 1-5 As shown, the utility model provides a wax mold for a pump cover casting for a vacuum pump, wherein the inner core 50 is engaged with the upper mold 10. A mounting through hole is provided in the middle of the upper mold groove, and the inner core 50 is provided in the mounting through hole, and the shape of the mounting through hole corresponds to the shape of the outer wall of the inner core 50.

[0034] like Figure 1-5 As shown, in the wax mold of a pump cover casting for a vacuum pump proposed by the utility model, the shape of the partition 60 corresponds to the shape of the lower mold 20.

[0035] like Figure 1-5 As shown, the utility model proposes a wax mold for a pump cover casting for a vacuum pump, wherein the upper mold groove is provided with an upper wax injection port 101, and the lower mold groove is provided with a lower wax injection port 201, and the upper wax injection port 101 and the lower wax injection port 201 are combined into a cylindrical hole.

[0036] The working principle of the utility model is:

[0037] a) placing the partition into the lower mold;

[0038] b) Place the inner core in the lower mold groove;

[0039] c) Install built-in blocks;

[0040] d) closing the upper die and the lower die, and making the inner core engage with the upper die, and the inner block engage with the upper die;

[0041] e) installing the first foot core and the second foot core;

[0042] f) installing the water inlet core, the first auxiliary core and the second auxiliary core;

[0043] g) installing the outlet core, the third auxiliary core and the fourth auxiliary core;

[0044] h) Inject wax from the wax injection port.

[0045] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A wax mold for a pump cover casting for a vacuum pump, characterized in that: The invention comprises an upper mold (10), a lower mold (20) and a core pulling assembly (30), wherein the upper mold (10) and the lower mold (20) fix the core pulling assembly (30), and the core pulling assembly (30) comprises a first base core (301), a second base core (302), an inlet core (303) and an outlet core (304), and further comprises an inner block (40), an inner core (50) and a partition (60), wherein one end of the inner block (40) contacts the upper mold (10) and the other end contacts the lower mold (20), the inner core (50) is arranged between the upper mold (10) and the lower mold (20) and is used for forming an inner cavity, and the partition (60) is arranged between the inner core (50) and the lower mold (20).

2. The mold of the wax mold of a pump cover casting for a vacuum pump according to claim 1, characterized in that: The upper die (10) is provided with an upper groove, and the lower die (20) is provided with a lower groove.

3. The mold of the wax mold of a pump cover casting for a vacuum pump according to claim 2, characterized in that: The water inlet core (303) is also wrapped with a first auxiliary core (305) and a second auxiliary core (306); both the first auxiliary core (305) and the second auxiliary core (306) are semicircular arc-shaped, and the two are combined to form a circular ring.

4. The mold of the wax mold of a pump cover casting for a vacuum pump according to claim 3, characterized in that: The outlet core (304) is also wrapped with a third auxiliary core (307) and a fourth auxiliary core (308); both the third auxiliary core (307) and the fourth auxiliary core (308) are semicircular in shape and are combined to form a circular ring.

5. The mold of the wax mold of a pump cover casting for a vacuum pump according to claim 4, characterized in that: The inner core (50) is clamped with the upper mold (10).

6. The mold of the wax mold of a pump cover casting for a vacuum pump according to claim 5, characterized in that: The shape of the partition plate (60) corresponds to the shape of the lower mold (20).

7. A wax mold for a pump cover casting for a vacuum pump according to any one of claims 2 to 6, characterized in that: The upper mold groove is provided with an upper wax injection opening (101), and the lower mold groove is provided with a lower wax injection opening (201). The upper wax injection opening (101) and the lower wax injection opening (201) are combined into a cylindrical hole.

Images