Lower pressing plate assembly with pressurizing seal

Abstract

A plate body and a cover plate are fixedly connected, a concave air inflation sealing groove is formed around the cover plate and the plate body, an I-shaped fixing piece with an air inflation channel is installed in the air inflation sealing groove, a C-shaped air inflation sealing ring is installed on the fixing piece, and the C-shaped air inflation sealing ring is connected with the cover plate. The outer side wall of the inflation sealing ring abuts against the inner side wall of the inflation sealing groove. An inflation hole is further formed in the cover plate, an inflation nozzle is installed on the inflation hole in a nested mode, and the inflation nozzle is communicated with the inflation sealing ring through an inflation channel. The air inflation sealing ring is matched with the fixing piece and the air inflation nozzle, so that the air inflation sealing ring is always kept in an air inflation state during working, the lower pressing plate and the lower sand box can be always in a tight fit state, sand grains cannot enter a gap between the lower pressing plate and the lower sand box, the lower pressing plate can smoothly move up and down, and the sand filling effect is improved. And faults are not easy to occur.

Description

Technical Field

[0001] The utility model relates to the field of molding machines, in particular to a lower pressure plate assembly with a pressurized seal. Background Art

[0002] A molding machine is a common piece of industrial equipment that can produce the sand molds needed to manufacture parts and components. In order to meet the production needs of parts of different sizes and specifications, the sand particles in the sand mold are densely filled by sand shooting. After filling is completed, the upper and lower pressure plates are pushed by the oil cylinder to further compact the sand mold. This type of molding machine, in which both the upper and lower pressure plates move, can manufacture products of various shapes and sizes and has high flexibility and adaptability. At the same time, this type of molding machine has high-speed production capabilities, can quickly complete the product manufacturing process, and improve production efficiency. Molding machines in which both the upper and lower pressure plates move usually have precise control systems that can ensure the consistency of the product's size and shape and provide high-quality finished products. In addition, this equipment is usually equipped with an automated control system that can realize an automated production process, reduce manual operations, and improve production efficiency.

[0003] However, this type of molding machine has a complex structure and requires regular maintenance and servicing to ensure proper operation and extend its service life. This type of molding machine also places high demands on the sealing performance of the lower platen, which must ensure good sealing performance during both the sand injection and extrusion processes. If the lower platen's sealing performance is insufficient, sand can overflow or leak into the gap between the lower platen and the lower sand box, causing the lower platen to operate improperly. Therefore, a lower platen structure with a stable seal is urgently needed. Utility Model Content

[0004] In view of the above problems, the present invention aims to provide a lower pressure plate assembly with a pressurized seal.

[0005] To achieve this technical purpose, the solution of the utility model is: a lower pressure plate assembly with a pressurized seal, comprising a plate body and an annular cover plate, wherein the plate body and the cover plate are fixedly connected, and a concave inflatable sealing groove is formed around the cover plate and the plate body, an I-shaped fixing piece with an inflatable channel is installed in the inflatable sealing groove, a C-shaped inflatable sealing ring is installed on the fixing piece, and the outer wall of the inflatable sealing ring abuts against the inner wall of the inflatable sealing groove;

[0006] The cover plate is also provided with an inflation hole, an inflation nozzle is nested on the inflation hole, and the inflation nozzle is connected to the inflation sealing ring through the inflation channel;

[0007] The plate body is also provided with a plurality of sand feeding channels, each of which is a funnel-shaped structure.

[0008] Preferably, an annular groove is provided on the inflation nozzle, and a first cavity and a second cavity are provided in the inflation nozzle, the diameter of the first cavity is larger than the diameter of the inflation hole, and the diameter of the second cavity is smaller than the diameter of the inflation hole.

[0009] Preferably, the inflation channel in the fixing member is an L-shaped structure, one side of the fixing member is an air outlet nozzle with a T-shaped structure, and the inflation sealing ring is sleeved on the air outlet nozzle.

[0010] Preferably, four rows of sand feeding channels are provided on the middle portion of the plate body, with five sand feeding channels on each row of the plate body.

[0011] Preferably, the plate body is provided with a plurality of connecting screw holes, the cover plate is provided with fixing holes, and the plate body and the cover plate are fixedly connected by bolts and threaded connecting screw holes.

[0012] Preferably, the sand inlet channel is further provided with a sealing cover, and the sealing cover is provided with a straight transverse groove or a cross transverse groove.

[0013] The beneficial effect of the present invention is that the present application adopts an inflatable sealing ring in combination with a fixing part and an inflation nozzle, so that the inflatable sealing ring always remains in an inflated state during operation, and can make the lower pressure plate always fit tightly with the lower sand box, and sand particles will not enter the gap between the lower pressure plate and the lower sand box, so that the lower pressure plate can move up and down smoothly and is not prone to malfunction; at the same time, a funnel-shaped sand inlet channel is adopted, which is larger at the bottom and smaller at the top, so that the pressure at the inlet is increased, and the sand particles can better cover the surface of the template; at the same time, a sealing cover is provided on the sand inlet channel, and the number and position of the sand inlet channels can be adjusted as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the back side of the utility model;

[0015] Figure 2 It is a structural diagram of the front side of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model from a top view;

[0017] Figure 4 This is a cross-sectional view of the utility model;

[0018] Figure 5 It is a partial cross-sectional view of the utility model. DETAILED DESCRIPTION

[0019] The utility model of this application is further described in detail below with reference to the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical solution, the following embodiments are selected for illustration; other embodiments obtained based on the content recorded in this application without creative work are all within the scope of protection of this utility model.

[0020] In the following embodiments, it should be noted that the terms "up", "down", "left", "right", "inside", "outside", "top / bottom" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of clearly describing the present embodiment, and do not indicate or imply that the device or element referred to must have a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0021] like Figure 1-5 The specific embodiment of the present invention is a lower pressure plate assembly with a pressurized seal, comprising a rectangular plate body 1 and a matching annular cover plate 2, wherein the plate body 1 and the cover plate 2 are fixedly connected by bolts, wherein the gap between the thinner cover plate 2 and the thicker plate body 1 forms a concave inflatable sealing groove 3, and an I-shaped fixing member 4 with an inflatable channel 8 is installed in the inflatable sealing groove 3; first, a C-shaped elastic inflatable sealing ring 5 is installed on the fixing member 4, and then the cover plate 2 is covered and screwed on, wherein the outer wall of the inflatable sealing ring 5 abuts against the inner wall of the inflatable sealing groove 3, and is filled tightly;

[0022] An inflation hole 6 is provided at a position corresponding to the cover plate and the fixing piece, and an inflation nozzle 7 is nested and installed on the inflation hole 6. The inflation nozzle 7 is connected to the inflation sealing ring 5 through the inflation channel 8 and the inflation hole 6. The inflation sealing ring 5 can be inflated by an air pump to expand the inflation sealing ring 5 to fill the gap between the lower pressure plate and the lower sand box;

[0023] The plate body 1 is also provided with a sand inlet channel 9 which is larger at the bottom and smaller at the top and can be pressurized. The sand inlet channel 9 is a funnel-shaped structure. The plate body is provided with a plurality of small exhaust holes 12 to prevent excessive pressure in the lower sand box from hindering the sand shooting operation.

[0024] In order to facilitate the fixing of the inflation tube to inflate the inflation sealing ring, an annular groove 701 is provided on the inflation nozzle 7, and a first cavity 702 and a second cavity 703, one large and one small, are provided in the inflation nozzle 7. The diameter of the first cavity 702 is larger than the diameter of the inflation hole 6, and the diameter of the second cavity 703 is smaller than the diameter of the inflation hole 6.

[0025] In order to facilitate the fixation of the C-shaped inflatable sealing ring and achieve a better inflation effect, an L-shaped inflation channel 8 is provided in the fixing part 4 , and a T-shaped air outlet nozzle 401 is provided on one side of the fixing part 4 , and the inflatable sealing ring 5 is sleeved on the air outlet nozzle 401 .

[0026] In order to better perform the sand shooting operation, four rows of sand feeding channels 9 are provided on the middle portion of the plate body 1 , with five sand feeding channels 9 on each row of the plate body 1 .

[0027] In order to facilitate the fixing of the fixing parts and the inflatable sealing ring, and also to facilitate later maintenance, 18 connecting screw holes are provided on the plate body 1, and 18 fixing holes are provided on the cover plate 2. The plate body 1 and the cover plate 2 are fixedly connected by bolts 10 and the connecting screw holes.

[0028] In order to conveniently control the number of sand feeding channels during the sand shooting operation, a sealing cover 11 is further provided on the sand feeding channel 9. The sealing cover 11 is provided with a flat transverse groove or a cross transverse groove, and the sealing cover can be removed by a screwdriver.

[0029] The present application adopts an inflatable sealing ring in combination with a fixing part and an inflation nozzle, so that the inflatable sealing ring is always kept in an inflated state during operation, which can ensure that the lower pressure plate is always in a tight fit with the lower sand box, and the sand particles will not enter the gap between the lower pressure plate and the lower sand box, so that the lower pressure plate can move up and down smoothly and is not prone to malfunction; at the same time, a funnel-shaped sand inlet channel is adopted, which is larger at the bottom and smaller at the top, so that the pressure at the inlet is increased, so that the sand particles can better cover the surface of the template; at the same time, a sealing cover is provided on the sand inlet channel, and the number and position of the sand inlet channels can be adjusted as needed.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent replacements and improvements made to the above embodiments based on the technical essence of the present invention should be included in the scope of protection of the technical solution of the present invention.

Claims

1. A lower pressure plate assembly with a pressurized seal, characterized in that: The invention comprises a plate body and an annular cover plate, wherein the plate body and the cover plate are fixedly connected, and a concave air-inflating sealing groove is formed around the cover plate and the plate body, an I-shaped fixing piece with an air-inflating channel is installed in the air-inflating sealing groove, and a C-shaped air-inflating sealing ring is installed on the fixing piece, and the outer wall of the air-inflating sealing ring abuts against the inner wall of the air-inflating sealing groove; The cover plate is also provided with an inflation hole, an inflation nozzle is nested on the inflation hole, and the inflation nozzle is connected to the inflation sealing ring through the inflation channel; The plate body is also provided with a plurality of sand feeding channels, each of which is a funnel-shaped structure.

2. The lower pressure plate assembly with a pressurized seal according to claim 1, characterized in that: An annular groove is provided on the inflation nozzle, and a first cavity and a second cavity are provided in the inflation nozzle. The diameter of the first cavity is larger than the diameter of the inflation hole, and the diameter of the second cavity is smaller than the diameter of the inflation hole.

3. The lower pressure plate assembly with a pressurized seal according to claim 1, characterized in that: The inflation channel in the fixing member is an L-shaped structure, one side of the fixing member is an air outlet nozzle with a T-shaped structure, and the inflation sealing ring is sleeved on the air outlet nozzle.

4. The lower pressure plate assembly with a pressurized seal according to claim 1, characterized in that: Four rows of sand feeding channels are arranged on the middle part of the plate body, and each row of the plate body has five sand feeding channels.

5. The lower pressure plate assembly with a pressurized seal according to claim 1, characterized in that: The plate body is provided with a plurality of connecting screw holes, the cover plate is provided with fixing holes, and the plate body and the cover plate are fixedly connected by bolts and the connecting screw holes.

6. The lower pressure plate assembly with a pressurized seal according to claim 1, characterized in that: The sand inlet channel is further provided with a sealing cover, and the sealing cover is provided with a straight transverse groove or a cross transverse groove.

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