Anti-blocking structure of mold air plug

Abstract

The utility model relates to an anti-blocking structure of a mold air plug, which comprises at least one venting plug arranged in a mold and communicated with a cavity; the at least one air blowing pipe is arranged on the mold, a nozzle is arranged at one end of each air blowing pipe, and a plurality of air outlet holes are formed in the nozzles; and the nozzles of the air blowing pipes respectively extend into the mold, correspond to the at least one venting plug in position and blow air to the venting channels of the venting plugs. The venting plug is prevented from being blocked, the venting effect of the venting plug is improved, and the risk of insufficient casting of castings is avoided. The utilization rate of the venting plug is improved, the replacement and maintenance time and cost are saved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to foundry mould technical field especially a mould air plug's anti - block structure. BACKGROUND

[0002] At present, in order to protect metal mould, improve the surface quality of casting, improve the forming of casting and control the heat transfer rate, need to spray heat insulating coating to the cavity of metal mould. The mould usually will set up for expediting the gas exhaust of cavity air plug, and the air passage of air plug communicates with the cavity. Because in the production process of casting, need to spray cavity many times, easy to cause the coating accumulation at air plug, lead to air plug exhaust not smooth, casting gas retention pours insufficient, serious time influence casting output, cause unnecessary waste product. For this reason, in the prior art, need to frequently replace air plug, lead to frequent operation, cost increase. SUMMARY

[0003] In view of the deficiency of prior art, the utility model provides a mould air plug's anti - block structure, and the purpose is to prevent air plug from being blocked and improve air plug utilization.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of mould air plug's anti - block structure, comprising:

[0006] At least one exhaust plug, which is arranged in the mould and communicates with the cavity;

[0007] At least one gas blowing pipe is arranged on the mould, and one end of each gas blowing pipe is provided with a nozzle, and a plurality of gas outlets are arranged on the nozzle;

[0008] The nozzle of each gas blowing pipe respectively extends into the mould, and the position of the at least one exhaust plug respectively corresponds, for blowing gas to the exhaust passage of exhaust plug.

[0009] Further technical scheme is:

[0010] The exhaust passage includes a first exhaust groove uniformly distributed along the circumferential direction of the exhaust plug, and the radial extension size L of each first exhaust groove is not less than R / 2, and R is the radius of the exhaust plug.

[0011] The plurality of gas outlets are uniformly distributed along the circumferential direction.

[0012] The plurality of gas outlets are radially arranged in at least two circles around the nozzle.

[0013] The nozzle is in the shape of a horn, comprising a circumferential side and a bottom end face, and the plurality of gas outlets are arranged on the bottom end face.

[0014] The exhaust passage further comprises second exhaust grooves which are uniformly distributed along the circumference of the exhaust plug and are arranged alternately with the first exhaust grooves.

[0015] The other end of the blowing pipe is provided with a joint for connecting a gas source.

[0016] The mold is provided with a guide channel for accommodating the pipe segment of the blowing pipe close to the nozzle.

[0017] The at least one blowing pipe is fixed on the mold by a positioning member, and the positioning member is provided with a plurality of positioning holes, each of which is used for penetrating the blowing pipe.

[0018] The at least one blowing pipe is a steel pipe.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model improves the exhaust effect of the exhaust plug, avoids the risk of insufficient casting, improves the utilization rate of the exhaust plug, saves the time and cost of replacement and maintenance, and improves the production efficiency.

[0021] The blowing pipe of the utility model is directly fixed on the mold, which is convenient for directly using the original gas source on the casting equipment, is convenient to transform, and is simple to control.

[0022] Other features and advantages of the utility model will be described in the subsequent description or can be understood by implementing the utility model. DETAILED DESCRIPTION

[0023] Figure 1 It is a perspective structural schematic view of the utility model embodiment.

[0024] Figure 2 It is a top view. Figure 1

[0025] Figure 3 It is a B-B sectional view in the utility model embodiment. Figure 2

[0026] Figure 4 It is a structural schematic view of the blowing pipe in the utility model embodiment.

[0027] Figure 5 It is a structural schematic view of the gas plug in the utility model embodiment.

[0028] Figure 6 It is a structural schematic view of the blowing pipe and the gas plug in the utility model embodiment.

[0029] ​​In the figure: 1, upper die; 2, lower die; 3, positioning piece; 4, blowing pipe; 5, joint; 6, exhaust plug; 7, cavity; 101, guide channel; 401, nozzle; 601, first exhaust groove; 602, second exhaust groove; 4011, air outlet hole. DETAILED DESCRIPTION

[0030] The specific embodiments of the utility model are described below in combination with the drawings.

[0031] Referring to Figures 1 to 3 The die gas plug anti-blocking structure of the embodiment comprises an upper die 1 and a lower die 2, a cavity 7 is formed in the die, and the die gas plug anti-blocking structure comprises:

[0032] At least one exhaust plug 6 is arranged in the die and communicates with the cavity 7;

[0033] At least one blowing pipe 4 is arranged on the die, and one end of each blowing pipe 4 is provided with a nozzle 401, and a plurality of air outlet holes 4011 are arranged on the nozzle 401.

[0034] The nozzle 401 of each blowing pipe 4 respectively extends into the die and corresponds to the position of the at least one exhaust plug 6, and blows the exhaust passage of the exhaust plug 6 through the plurality of air outlet holes 4011.

[0035] The other end of the blowing pipe 4 is provided with a joint 5, which is used to connect a gas source. The gas source can be a gas source originally arranged on the equipment for cooling the die, or an external gas source.

[0036] Preferably, the at least one blowing pipe 4 is arranged in parallel.

[0037] Preferably, the at least one exhaust plug 6 is arranged in the upper die 1 and located on the upper wall of the cavity 7.

[0038] Referring to Figure 4 and Figure 5 As a specific embodiment, the exhaust passage comprises a plurality of first exhaust grooves 601 uniformly distributed along the circumferential direction of the exhaust plug 6, and the size L of each first exhaust groove 601 extending along the radial direction of the exhaust plug 6 is preferably not less than R / 2, R being the radius of the exhaust plug 6.

[0039] The plurality of air outlet holes 4011 are preferably uniformly distributed along the circumferential direction. Thus, the first exhaust grooves 601 of the exhaust plug 6 are correspondingly positioned.

[0040] The plurality of air outlet holes 4011 are preferably arranged in at least two circles along the radial direction of the nozzle 401. Thus, as many first exhaust grooves 601 as possible are covered to clean the paint possibly existing therein.

[0041] The nozzle 401 is preferably trumpet-shaped, comprising a circumferential side and a bottom end face, and a plurality of air outlet holes 4011 are arranged on the bottom end face, opposite the top end of the exhaust plug 6, as shown in Figure 6

[0042] As a specific embodiment, the exhaust channel further comprises a second exhaust groove 602 uniformly distributed along the circumferential direction of the exhaust plug 6, which is arranged on the circumferential outer wall of the exhaust plug 6 and alternately spaced with the first exhaust groove 601. The arrangement of two kinds of exhaust grooves can ensure the exhaust of gas from the outer surface and the inner part of the exhaust plug. The alternate arrangement of the two kinds of exhaust grooves can improve the uniformity of gas pressure and the stability of flow.

[0043] As shown in Figure 3 As a specific embodiment, a guide groove 101 is arranged in the mold for accommodating the pipe segment of the blowing pipe 4 close to the nozzle 401 to ensure the correct blowing direction.

[0044] Preferably, the blowing pipe 4 is fixed to the mold by the positioning member 3.

[0045] Preferably, the positioning member 3 is provided with a plurality of positioning holes, each of which is used to pass through the blowing pipe 4.

[0046] In this embodiment, the blowing pipe is directly arranged on the mold, which greatly facilitates the blowing operation and facilitates the direct use of the gas source provided by the equipment.

[0047] In this embodiment, the blowing pipe is directly fixed to the mold, and the blowing pipe is preferably a steel pipe to ensure the stability of the pipeline and the reliability of the blowing operation. The blowing pipe can be designed as L-shaped or linear according to the installation space and the shape of the mold.

[0048] A preferred use method of this embodiment is as follows:

[0049] The blowing pipe 4 is connected to the gas source on the equipment through the joint 5. After each mold pouring is finished and the casting is ejected, the blowing pipe 4 is controlled to be connected to blow air to the exhaust plug 6, so that the foreign matter in the exhaust groove of the exhaust plug 6 is blown clean, and the exhaust of the exhaust plug is smooth.

[0050] Actual production data proves that under the condition that other conditions and structures are the same, the exhaust plug of the mold without the blowing pipe is replaced at least once a week, and each time costs 1-2 hours. The exhaust plug of this embodiment basically does not need to be replaced, and 10-30 castings per mold can be produced per week.

[0051] ​Those skilled in the art can understand that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A mold air lock preventing structure characterized by comprising: The application relates to a mold for manufacturing a hollow plastic product, which comprises the following parts: at least one exhaust plug (6) arranged in the mold and communicating with a cavity (7); at least one blowing pipe (4) arranged on the mold, and one end of each blowing pipe (4) is provided with a nozzle (401) provided with a plurality of air outlets (4011); the nozzle (401) of each blowing pipe (4) respectively extends into the mold and corresponds to the position of the at least one exhaust plug (6) respectively, and is used for blowing the exhaust passage of the exhaust plug (6).

2. The anti-blocking structure of a mold gas trap according to claim 1, wherein The exhaust passage comprises first exhaust grooves (601) uniformly distributed along the circumferential direction of the exhaust plug (6), and the size L of each first exhaust groove (601) extending along the radial direction of the exhaust plug (6) is not less than R / 2, R being the radius of the exhaust plug (6).

3. The anti-blocking structure of a mold gas trap according to claim 1 or 2, characterized by, The plurality of air outlets (4011) are uniformly distributed along the circumferential direction.

4. The anti-blocking structure of a mold gas trap according to claim 3, wherein The plurality of air outlets (4011) are arranged in at least two circles along the radial direction of the nozzle (401).

5. The anti-blocking structure of a mold gas trap according to claim 3, wherein The nozzle (401) is trumpet-shaped and comprises a circumferential side and a bottom end face, and the plurality of air outlets (4011) are arranged on the bottom end face.

6. The anti-blocking structure of a mold gas trap according to claim 2, wherein The exhaust passage further comprises second exhaust grooves (602) uniformly distributed along the circumferential direction of the exhaust plug (6) and arranged on the outer circumferential wall of the exhaust plug (6) and alternately spaced from the first exhaust grooves (601).

7. The anti-blocking structure of a mold gas trap according to claim 1, wherein The other end of the blowing pipe (4) is provided with a joint (5) for connecting a gas source.

8. The anti-blocking structure of a mold gas trap according to claim 1, wherein The mold is provided with a guide channel (101) for accommodating the pipe section of the blowing pipe (4) close to the nozzle (401).

9. The anti-blocking structure of a mold gas trap according to claim 1, wherein The at least one blowing pipe (4) is fixed on the mold through a positioning member (3), and the positioning member (3) is provided with a plurality of positioning holes, and each positioning hole is used for penetrating the blowing pipe (4).

10. The anti-blocking structure of a mold gas trap according to claim 1, wherein The at least one blowing pipe (4) is a steel pipe.

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