CN213944797U

CN213944797U - Mounting structure of plug-in nozzle

Info

Publication number: CN213944797U
Application number: CN202022453166.2U
Authority: CN
Inventors: 王中成
Original assignee: Wuxi Ruicheng Machinery Manufacturing Co ltd
Current assignee: Wuxi Ruicheng Machinery Manufacturing Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-08-13
Anticipated expiration: 2030-10-29

Abstract

The utility model relates to a penetrate core mould technical field, specifically be a bayonet mounting structure who penetrates mouth, including the sand shooting mouth, sand shooting mouth screw thread is connected with the internal thread pipe, the fixed sand shooting board that runs through of internal thread pipe, sand shooting mouth integrated into one piece has the ring border, be equipped with two-layer heat insulating mattress between ring border and the internal thread pipe, be equipped with the flexible sealing pad between the two-layer heat insulating mattress, the below joint that just is located the internal thread pipe on the sand shooting mouth has the jump ring, the internal thread pipe has set firmly the cooling tube, the cooling tube has set firmly radiating fin, the circular slot that is used for placing cooling tube and radiating fin is offered at the top of sand shooting board, and the bottom of sand shooting board sets up the louvre that is. The utility model discloses a cooling tube and radiating fin have effectively reduced the temperature of shooting the sand mouth to effectively protect shooting mouth rubber ring, and compensated ring border and the tight clearance deviation of restraint internal thread pipe of jump ring clamp through the flexible seal pad, realize shooting the firm installation of sand mouth and internal thread pipe.

Description

Mounting structure of plug-in nozzle

Technical Field

The utility model relates to a penetrate core mould technical field, specifically be a bayonet mounting structure who penetrates mouth.

Background

In the sand casting process, the production of castings with complex shapes mostly adopts core assembly modeling, for example, the complicated inner cavities of cylinder bodies and cylinder covers of various engines are mostly not processed, so that the manufacture of sand cores with smooth surfaces and accurate sizes is necessary. At present, the core making equipment in China mainly comprises a hot box core making machine and a cold box core making machine, a section of core rod is reserved on the sand core of an old flat nozzle in the hot box core making process, the core rod needs to be cleaned, the production efficiency is reduced, and meanwhile, the waste of raw materials and energy is caused. The application of the plug-in nozzle fundamentally solves the defects of the prior flat nozzle.

At present, the plug-in nozzle can be divided into a sand blocking block sand blocking plug-in nozzle and a nozzle rubber ring sand blocking plug-in nozzle according to the mode of sand blocking and sand blocking. Generally, the normal working temperature of a hot core box mold is usually more than 250 ℃, the heat of the inserted nozzle is easy to accelerate the aging of a nozzle rubber ring, so that the rejection rate of the sand core is high, and the manufacturing cost of the sand core is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bayonet mounting structure who penetrates mouth to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an installation structure of bayonet nozzle, includes sand shooting mouth and sand shooting plate, sand shooting mouth's outer wall screw thread is connected with the internal thread pipe, the internal thread pipe is fixed to run through the sand shooting plate, sand shooting mouth's inner wall is fixed to be inserted and is equipped with the nozzle rubber ring, sand shooting mouth is last and to be located the integrated into one piece above the internal thread pipe has the ring border, be equipped with two-layer cover between the bottom at ring border and the top of internal thread pipe and locate the heat insulating mattress of sand shooting mouth outside, be equipped with the flexible sealing pad that the cover was located sand shooting mouth outside between two-layer the heat insulating mattress, sand shooting mouth is last and to be located the below joint of internal thread pipe has the jump ring, the outer wall of internal thread pipe has set firmly the cooling tube, the outer wall of cooling tube has set firmly along the cooling tube radial distributed's radiating fin, the circular slot that is used for placing the cooling tube and radiating fin is seted up at sand shooting plate's top, and the bottom of the sand shooting plate is provided with heat radiation holes communicated with the circular grooves.

Optionally, the radiating fins are straight fins, and the outer diameter of a circular ring formed by enclosing the outer wall of the radiating pipe along the radiating fins is smaller than the diameter of the circular groove.

Optionally, the heat dissipation holes are formed by sequentially communicating inverted conical holes, straight holes and conical holes from top to bottom, and the heat dissipation holes and the heat dissipation fins are distributed in an annular staggered manner in the vertical direction.

Optionally, the heat insulation pad is a circular polyurethane pad, and the thickness of the heat insulation pad is two millimeters.

Optionally, the radiating pipe is a seamless copper pipe, the length of the radiating pipe is equal to the length of the radiating fin, and the length of the radiating pipe is not less than half of the thickness of the sand shooting plate.

Compared with the prior art, the utility model provides a bayonet mounting structure who penetrates mouth possesses following beneficial effect:

1. the utility model effectively reduces the temperature of the sand shooting nozzle by heat transfer from the radiating tubes and the radiating fins to the outside air, thereby effectively protecting the rubber ring of the sand shooting nozzle, ensuring the sand shooting operation of the sand shooting nozzle to be normally carried out, compensating the gap deviation of the ring edge and the clamp spring clamping and restricting the internal threaded tube through the flexible sealing gasket, and realizing the stable installation of the sand shooting nozzle and the internal threaded tube;

2. the heat dissipation channel formed by the circular groove and the heat dissipation holes realizes heat exchange between the heat dissipation fins and the outside air, is efficient and reliable, and is favorable for air to enter and exit the heat dissipation holes by respectively arranging the inverted conical holes and the conical holes at the top and the bottom of the heat dissipation holes, thereby improving the heat dissipation efficiency;

3. the utility model discloses a heat insulating mattress blocks that the heat transfer who comes from ring border and internal thread pipe seals the pad to flexible, avoids the sealed pad of flexible to be heated ageing with higher speed.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. a sand shooting nozzle; 2. a nozzle rubber ring; 3. a ring edge; 4. a sand shooting plate; 5. an internally threaded tube; 6. a flexible gasket; 7. a heat insulating pad; 8. a clamp spring; 9. a radiating pipe; 10. a heat dissipating fin; 11. a circular groove; 12. and (4) heat dissipation holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1, the present invention provides an installation structure of a plug-in nozzle, which includes a sand shooting nozzle 1 and a sand shooting plate 4, wherein a nozzle rubber ring 2 is inserted into the inner wall of the sand shooting nozzle 1, an inner threaded pipe 5 is screwed on the outer wall of the sand shooting nozzle 1, and the inner threaded pipe 5 penetrates through the sand shooting plate 4 and is welded to the sand shooting plate 4. The sand shooting mouth 1 is provided with a ring edge 3 integrally formed above the internal thread pipe 5, and the clamp spring 8 is clamped below the internal thread pipe 5 on the sand shooting mouth 1. The ring edge 3 restricts the depth of the sand shooting nozzle 1 extending into the internal threaded pipe 5, and the snap spring 8 prevents the screw thread connection between the sand shooting nozzle 1 and the internal threaded pipe 5 from loosening. The outer wall welding of internal thread pipe 5 has cooling tube 9, and the outer wall integrated into one piece of cooling tube 9 has along the radiating fin 10 of the radial distribution of cooling tube 9, and cooling tube 9 is seamless copper pipe, and radiating fin 10 is straight fin, and the length of cooling tube 9 equals the length of radiating fin 10, and the length of cooling tube 9 equals half of the 4 thicknesses of shooting plate. The top of the sand shooting plate 4 is provided with a circular groove 11 for placing the radiating pipe 9 and the radiating fins 10, and the bottom of the sand shooting plate 4 is provided with a radiating hole 12 communicated with the circular groove 11. The outer diameter of the radiating fin 10 is smaller than that of the circular groove 11 along the outer wall of the radiating pipe 9. The heat dissipation holes 12 are formed by sequentially communicating inverted conical holes, straight holes and conical holes from top to bottom, and the heat dissipation holes 12 and the heat dissipation fins 10 are distributed in an annular staggered manner in the vertical direction.

The heat on the sand shooting nozzle 1 can loop through the internal thread pipe 5, the radiating pipe 9 and the radiating fins 10 to transfer to the outside air, so that the temperature of the sand shooting nozzle 1 is effectively reduced, the thermal expansion of the sand shooting nozzle 1 is reduced on the one hand, the excessive aging of the sand shooting nozzle rubber ring 2 caused by heating is avoided on the other hand, and the sand shooting operation of the sand shooting nozzle 1 is effectively guaranteed to be normally carried out. The heat dissipation fins 10 exchange heat with the outside air through the heat dissipation channels formed by the circular grooves 11 and the heat dissipation holes 12, the heat dissipation channels are efficient and reliable, and the reverse taper holes and the taper holes are formed in the top and the bottom of the heat dissipation holes 12 respectively, so that air can enter and exit the heat dissipation holes 12, and the heat dissipation efficiency is improved.

Referring to fig. 1 and 2, two layers of heat insulation pads 7 are arranged between the bottom end of the annular edge 3 and the top end of the internal threaded pipe 5 and sleeved outside the sand shooting nozzle 1, a flexible sealing gasket 6 is arranged between the two layers of heat insulation pads 7 and sleeved outside the sand shooting nozzle 1, and the heat insulation pads 7 are circular polyurethane pads with the thickness of two millimeters. The heat insulating pad 7 hinders the heat transfer from the ring edge 3 and the internal threaded pipe 5 to the flexible sealing pad 6, and the flexible sealing pad 6 is prevented from being heated and accelerated to age. The flexible sealing gasket 6 compensates the gap deviation of the ring edge 3 and the clamp spring 8 which tightly clamps and restrains the internal threaded pipe 5, and the sand shooting nozzle 1 and the internal threaded pipe 5 are stably installed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an installation structure of bayonet mouth of penetrating, includes sand shooting mouth (1) and sand shooting plate (4), its characterized in that: the outer wall screw thread of the sand shooting mouth (1) is connected with an internal thread pipe (5), the internal thread pipe (5) is fixedly penetrated through the sand shooting plate (4), the inner wall of the sand shooting mouth (1) is fixedly inserted with a sand shooting mouth rubber ring (2), the sand shooting mouth (1) is provided with an integrated ring edge (3) above the internal thread pipe (5), a bottom end of the ring edge (3) and a heat insulation pad (7) arranged between the top ends of the internal thread pipe (5) are sleeved with each other, a flexible sealing pad (6) arranged outside the sand shooting mouth (1) is provided with a sleeve between the two layers of heat insulation pads (7), the sand shooting mouth (1) is provided with a clamp spring (8) clamped below the internal thread pipe (5), the outer wall of the internal thread pipe (5) is fixedly provided with a radiating pipe (9), the outer wall of the radiating pipe (9) is fixedly provided with radiating fins (10) radially distributed along the radiating pipe (9), the top of the sand shooting plate (4) is provided with a circular groove (11) for placing the radiating pipe (9) and the radiating fins (10), and the bottom of the sand shooting plate (4) is provided with a radiating hole (12) communicated with the circular groove (11).

2. A mounting structure of an insert nozzle according to claim 1, wherein: radiating fin (10) are straight fin, just radiating fin (10) are followed the outer diameter that the outer wall of cooling tube (9) encloses to close and form the ring is less than the diameter of circular slot (11).

3. A mounting structure of an insert nozzle according to claim 1, wherein: the radiating holes (12) are formed by sequentially communicating inverted conical holes, straight holes and conical holes from top to bottom, and the radiating holes (12) and the radiating fins (10) are distributed in an annular staggered mode in the vertical direction.

4. A mounting structure of an insert nozzle according to claim 1, wherein: the heat insulation pad (7) is a circular polyurethane pad, and the thickness of the heat insulation pad (7) is two millimeters.

5. A mounting structure of an insert nozzle according to claim 1, wherein: the radiating pipe (9) is a seamless copper pipe, the length of the radiating pipe (9) is equal to that of the radiating fins (10), and the length of the radiating pipe (9) is not less than half of the thickness of the sand shooting plate (4).