CN223056708U - A shaping die press for well lid processing - Google Patents

Abstract

The utility model relates to the technical field of manhole cover processing, and discloses a molding press for manhole cover processing, including a base frame, an upper fastening outer ring and a lower fastening outer ring for fixing two sets of manhole cover molds are arranged above the base frame, and the surfaces of the upper fastening outer ring and the lower fastening outer ring are provided with tooth grooves, and the upper fastening outer ring and the lower fastening outer ring are provided with a demoulding structure for quickly demoulding the manhole cover. The molding press for manhole cover processing can fix two sets of manhole cover molds and place them in the upper fastening outer ring and the lower fastening outer ring, so that the two sets of manhole cover molds can be molded together, and then liquid iron can be injected into the molding sand cavity inside the two sets of manhole cover molds to process and shape the manhole cover, and after the manhole cover is solidified and formed, the manhole cover can be quickly demoulded through the demoulding structure, thereby completing the processing of the manhole cover.

Description

A shaping die press for well lid processing

Technical Field

The utility model relates to the technical field of well lid processing, in particular to a molding press for well lid processing.

Background

The multipurpose cast iron for the well cover is manufactured, the mould is a sand mould, and the well cover is manufactured by filling liquid molten iron into a sand moulding cavity;

When the well lid is processed, a die press can be used, after the liquid molten iron is solidified into the well lid by the two groups of dies on the die press, the surface of the well lid can be stuck together with the dies for manufacturing the well lid, and the two groups of dies are directly separated from each other to carry out demolding in the existing demolding mode, but the well lid can be stuck on the dies, the two groups of dies are directly separated from each other to possibly damage the formed well lid, so that the processing quality of the well lid is reduced.

Disclosure of utility model

(One) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a molding press for well lid processing, which solves the problem that when the press is used, two groups of dies on the press are inconvenient to rapidly demould from a molded well lid.

(II) technical scheme

In order to realize the purpose that when the molding press is used, two groups of molds on the molding press are convenient to rapidly demold the molded manhole cover, the utility model provides the technical scheme that the molding press for processing the manhole cover comprises a base frame, an upper fastening outer ring and a lower fastening outer ring for fixing two groups of manhole cover molds are arranged above the base frame, tooth grooves are formed on the surfaces of the upper fastening outer ring and the lower fastening outer ring, and demolding structures for rapidly demolding the manhole cover are arranged on the upper fastening outer ring and the lower fastening outer ring;

The base frame comprises a linear frame, the linear frame is fixed on the base frame in the vertical direction, a servo motor is arranged on the side face of the linear frame, a gear shaft is fixed on an output shaft of the servo motor, an L-shaped frame is fixed on the linear frame at the rear, vertical electric rods are arranged on the L-shaped frame and in the middle of the base frame, and a transverse electric rod is arranged at one end of the inner side of the vertical electric rod;

The upper fastening outer ring comprises an upper fastening inner ring which is connected between two groups of upper fastening outer rings in a sliding manner, an upper die holder is arranged on the inner side of the upper fastening outer ring, an upper fixed ring is arranged on the outer side of the upper die holder, the lower fastening outer ring comprises a lower fastening inner ring which is connected between two groups of lower fastening outer rings in a sliding manner, a lower die holder is arranged on the inner side of the lower fastening outer ring, and a lower fixed ring is arranged on the outer side of the lower die holder;

The demolding structure comprises an outer rotating groove, the outer rotating groove is formed in the outer side of the inner wall of an upper fastening outer ring and the outer side of the inner wall of a lower fastening outer ring, a telescopic circular ring is arranged in the outer rotating groove, an open fastening groove is formed in the inner side of the inner wall of the upper fastening outer ring and the inner side of the inner wall of the lower fastening outer ring, a limit groove is formed in the inner side of the open fastening groove in a radial mode, limiting blocks are radially fixed on the outer sides of an upper mold base and a lower mold base, stepped through grooves are formed in the end faces of the upper mold base and the lower mold base, an upper prop is arranged in the stepped through grooves on one side of the upper mold base in a sliding mode, a lower prop is arranged in the stepped through grooves on one side of the lower mold base in a sliding mode, a semispherical head is fixed at one end of the outer side of the upper prop and the lower prop, and a shrapnel is sleeved on the upper prop.

Preferably, the upper die holder and the lower die holder form a well lid die, molding sand is arranged in the upper die holder and the lower die holder, a cavity is formed by a gap between the molding sand on the upper side and the molding sand on the lower side, and pouring holes are formed in the end faces of the upper die holder and the lower die holder.

Preferably, the racks on the surfaces of the tooth shafts are matched with the tooth grooves, and the tooth shafts are meshed with the upper fastening outer ring and the lower fastening outer ring through the racks and the tooth grooves on the surfaces of the tooth shafts.

Preferably, the transverse electric rod is fixedly connected with the outer ring component part of the telescopic circular ring, molding sand is arranged in the upper die holder and the lower die holder, a well lid cavity is formed in a gap between the molding sand, an uneven surface is arranged on the bottom surface of the upper fixed ring and the upper end surface of the lower fixed ring, and the upper fixed ring is in sliding connection with the inner ring component part of the telescopic circular ring through a bracket.

Preferably, the upper outer fastening ring and the upper inner fastening ring are arranged in a staggered manner, the upper outer fastening ring and the upper inner fastening ring between the adjacent upper outer fastening rings are in sliding connection, the upper outer fastening ring and the upper inner fastening ring form an upper telescopic fastening ring, the lower outer fastening ring and the lower inner fastening ring are arranged in a staggered manner, the adjacent lower outer fastening ring and the lower inner fastening ring between the adjacent lower outer fastening ring and the adjacent lower inner fastening ring are in sliding connection, and the lower outer fastening ring and the lower inner fastening ring form a lower telescopic fastening ring.

Preferably, the telescopic ring consists of an outer ring and an inner ring, the outer ring and the inner ring are arranged in a staggered mode and slide mutually, the outer ring is connected with the outer rotary groove in a rotating mode, the outer edges of the upper die holder and the lower die holder are located in the open fastening groove, and the upper die holder and the lower die holder are connected with the open fastening groove through a limiting groove and a limiting block.

Preferably, two ends of the elastic piece on one side of the upper jacking column are contacted with the upper die holder and the upper jacking column, two ends of the elastic piece on one side of the lower jacking column are contacted with the lower die holder and the lower jacking column, and the semi-ball head is contacted with concave-convex surfaces on the surfaces of the upper fixed ring and the lower fixed ring.

Compared with the prior art, the utility model provides a molding press for well lid processing, which has the following beneficial effects:

1. This a shaping die press for well lid processing, when needs are with well lid and upper die base and die holder drawing of patterns, make servo motor drive the tooth axle earlier and rotate, and then the tooth axle can drive the outer loop of upper fastening and lower fastening outer loop and reverse, and then the outer loop of upper fastening and lower fastening can drive upper die base and die holder and reverse, and upper die base and die holder and its inside well lid can rotate each other this moment, thereby can make the surface of well lid break away from upper die base and die holder, reduce the stickness of well lid and upper die base and die holder, the well lid drawing of patterns of being convenient for.

2. This a shaping die press for well lid processing, the upper die base can drive the jack-up post and rotate, and the die holder can drive down jack-up post and rotate, can drive the well lid also to move down when last jack-up post moves down, can drive the well lid also to move up when lower jack-up post moves, can make well lid in upper die base and the inside upper and lower direction of die holder move to make well lid break away from upper die base and die holder, further reduce the stickness of well lid and upper die base and die holder, make the well lid more convenient drawing of patterns.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a partial cross-sectional view of an upper die holder and a lower die holder of the present utility model;

FIG. 3 is an enlarged schematic view of a portion of the structure of FIG. 2A in accordance with the present utility model;

FIG. 4 is a schematic view of an upper stator ring and a lower upper stator ring of the present utility model;

FIG. 5 is an exploded view of the structurally fastened outer ring and upper die holder of the present utility model;

FIG. 6 is a schematic partial cross-sectional view of a structural upper jack post of the present utility model.

The device comprises a base frame 1, a linear frame 101, a servo motor 102, a 103, a gear shaft 104, an L-shaped frame 105, a vertical electric rod 106, a horizontal electric rod 2, an upper fastening outer ring 201, an upper fastening inner ring 202, an upper die holder 203, an upper fixed ring 3, a lower fastening outer ring 301, a lower fastening inner ring 302, a lower die holder 303, a lower fixed ring 4, a tooth socket 5, a demoulding structure 501, an outer rotary groove 502, a telescopic circular ring 503, an open fastening groove 504, a limiting groove 505, a limiting block 506, a stepped through groove 507, an upper jacking column 508, a lower jacking column 509, a semispherical head 510 and a spring plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the utility model provides a molding press for well lid processing, comprising a base frame 1, an upper fastening outer ring 2 and a lower fastening outer ring 3 for fixing two groups of well lid molds are arranged above the base frame 1, tooth grooves 4 are formed on the surfaces of the upper fastening outer ring 2 and the lower fastening outer ring 3, and a demoulding structure 5 for rapidly demoulding the well lid is arranged on the upper fastening outer ring 2 and the lower fastening outer ring 3;

The base frame 1 comprises a linear frame 101, the linear frame 101 is fixed on the base frame 1 in the vertical direction, a servo motor 102 is arranged on the side surface of the linear frame 101, a gear shaft 103 is fixed on an output shaft of the servo motor 102, an L-shaped frame 104 is fixed on the rear linear frame 101, vertical electric rods 105 are arranged on the L-shaped frame 104 and the middle part of the base frame 1, and a transverse electric rod 106 is arranged at one end of the inner side of the vertical electric rod 105;

The upper fastening outer ring 2 comprises an upper fastening inner ring 201, the upper fastening inner ring 201 is connected between the two groups of upper fastening outer rings 2 in a sliding manner, an upper die holder 202 is arranged on the inner side of the upper fastening outer ring 2, an upper fixed ring 203 is arranged on the outer side of the upper die holder 202, the lower fastening outer ring 3 comprises a lower fastening inner ring 301, the lower fastening inner ring 301 is connected between the two groups of lower fastening outer rings 3 in a sliding manner, a lower die holder 302 is arranged on the inner side of the lower fastening outer ring 3, and a lower fixed ring 303 is arranged on the outer side of the lower die holder 302;

The demolding structure 5 comprises an outer rotary groove 501, the outer rotary groove 501 is formed in the outer side of the inner walls of the upper fastening outer ring 2 and the lower fastening outer ring 3, a telescopic circular ring 502 is arranged in the outer rotary groove 501, an open fastening groove 503 is formed in the inner sides of the inner walls of the upper fastening outer ring 2 and the lower fastening outer ring 3, a limit groove 504 is formed in the inner sides of the open fastening groove 503 in the radial direction, a limit block 505 is radially fixed on the outer sides of the upper die holder 202 and the lower die holder 302, a stepped through groove 506 is formed in the end faces of the upper die holder 202 and the lower die holder 302, an upper ejector column 507 is arranged in the stepped through groove 506 in one side of the upper die holder 202 in a sliding mode, a semi-ball head 509 is fixed at one end of the outer side of the upper ejector column 507 and one end of the outer side of the lower ejector column 508, the upper ejector column 507 and the lower ejector column 508 are sleeved with elastic pieces 510, molding sand for processing is filled and fixed in the inner sides of the upper die holder 202 and the lower die holder 302 at this time, then the upper die holder 202 and the lower die holder 302 are placed in the open fastening groove 503, a transverse electric rod 106 is contracted so that the upper die holder 202 and the lower die holder 302 can be contracted into a liquid state, the upper die holder 302 and the upper die holder 302 can be fastened with the upper die holder 302 and the lower die holder 302 can be contracted into a telescopic circular ring, the telescopic circular ring is fastened in the upper ring and the upper ring 201, the upper ring is fastened into a telescopic ring and the upper ring 201 is fastened into a telescopic ring, and the telescopic ring is fastened into a telescopic ring and a telescopic ring-shaped inside a telescopic ring 3, and a telescopic ring is formed.

Further, the upper die holder 202 and the lower die holder 302 form a well lid die, molding sand is arranged in the upper die holder 202 and the lower die holder 302, a cavity is formed by a gap between the molding sand on the upper side and the molding sand on the lower side, pouring holes are formed in the end faces of the upper die holder 202 and the lower die holder 302, the upper die holder 202 and the lower die holder 302 form the well lid die, liquid molten iron can be poured into the cavity through the pouring holes, and after the liquid molten iron is solidified, a well lid can be formed in the cavity.

Further, the racks on the surface of the tooth shaft 103 are matched with the tooth grooves 4, the tooth shaft 103 is meshed with the upper fastening outer ring 2 and the lower fastening outer ring 3 through the racks and the tooth grooves 4 on the surface of the tooth shaft 103, when the servo motor 102 drives the tooth shaft 103 to rotate, the tooth shaft 103 can drive the upper fastening outer ring 2 and the lower fastening outer ring 3 to reversely rotate through the meshing of the tooth grooves 4, so that the upper fastening outer ring 2 can drive the upper die holder 202 to rotate, and the lower fastening outer ring 3 can drive the lower die holder 302 to rotate.

Further, the transverse electric rod 106 is fixedly connected with the outer ring component part of the telescopic circular ring 502, molding sand is arranged in the upper die holder 202 and the lower die holder 302, a well lid cavity is formed in a gap between the molding sand, the concave-convex surface is arranged on the bottom surface of the upper fixed ring 203 and the upper end surface of the lower fixed ring 303, the upper fixed ring 203 and the inner ring component part of the telescopic circular ring 502 are slidably connected through a bracket, the upper prop 507 and the lower prop 508 are in contact with the bottom surface of the upper fixed ring 203 and the concave-convex surface of the upper end surface of the lower fixed ring 303 through the semi-ball head 509, when the upper prop 507 moves from the concave part of the surface of the upper fixed ring 203 to the convex part side of the upper fixed ring, the lower prop 508 moves from the convex part of the surface of the lower fixed ring 303 to the concave part side of the lower fixed ring 303, and the upper prop 507 can push the well lid to move from the concave part of the upper fixed ring 203, and the lower prop 508 can push the well lid to move upward.

Further, the upper fastening outer ring 2 and the upper fastening inner ring 201 are arranged in a staggered manner, the upper fastening inner rings 201 between the adjacent upper fastening outer rings 2 and the adjacent upper fastening inner rings 201 are in sliding connection, the upper fastening outer ring 2 and the upper fastening inner ring 201 form an upper telescopic fastening ring, the lower fastening outer ring 3 and the lower fastening inner ring 301 are arranged in a staggered manner, the adjacent lower fastening outer ring 3 and the lower fastening inner ring 301 between the adjacent lower fastening outer ring 3 and the adjacent lower fastening inner ring 301 are in sliding connection, the lower telescopic fastening ring 3 and the lower fastening inner ring 301 form a lower telescopic fastening ring, so that the upper die holder 202 can be clamped and fixed through the upper telescopic fastening ring, the lower die holder 302 can be clamped and fixed through the lower telescopic fastening ring, and the upper die holder 202 and the lower die holder 302 can be limited in the circumferential direction through the combination of the limiting grooves 504 and the limiting blocks 505, so that the upper fastening outer ring 2 can drive the upper die holder 202 to rotate, and the lower fastening outer ring 3 can drive the lower die holder 302 to rotate.

Further, the telescopic ring 502 is composed of two parts of an outer ring and an inner ring, the outer ring and the inner ring are arranged in a staggered manner and slide mutually, the outer ring is connected with the outer rotary groove 501 in a rotary manner, the outer edges of the upper die holder 202 and the lower die holder 302 are located in the open fastening groove 503, the upper die holder 202 and the lower die holder 302 are connected with the open fastening groove 503 through the limiting groove 504 and the limiting block 505, the telescopic ring 502 can be driven to stretch through stretching of the transverse electric rod 106, when the telescopic ring 502 stretches, the upper telescopic fastening ring composed of the upper fastening outer ring 2 and the upper fastening inner ring 201 can be driven, and the lower telescopic fastening ring composed of the lower fastening outer ring 3 and the lower fastening inner ring 301 stretches, and the telescopic ring 502 can support and rotate the upper telescopic fastening ring and the lower telescopic fastening ring.

Further, when the two ends of the spring 510 on the side of the upper jack-post 507 are in contact with the upper die holder 202 and the upper jack-post 507, the two ends of the spring 510 on the side of the lower jack-post 508 are in contact with the lower die holder 302 and the lower jack-post 508, the half ball head 509 is in contact with the concave-convex surfaces of the upper fixed ring 203 and the lower fixed ring 303, and when the upper jack-post 507 and the lower jack-post 508 move in the up-down direction in the stepped through groove 506, the spring 510 can deform, and the inner end surface of the upper jack-post 507 and the surface of the upper die holder 202 are on the same horizontal plane, and the inner end surface of the lower jack-post 508 and the surfaces of the lower die holder 302 are on the same horizontal plane, so that the inside of the upper die holder 202 and the lower die holder 302 can be filled with molding sand later.

When the well lid forming device is used, molding sand for well lid processing is filled, compacted and fixed in the upper die holder 202 and the lower die holder 302, then the upper die holder 202 and the lower die holder 302 are placed in the open fastening groove 503, at the moment, the transverse electric rod 106 is contracted to enable the telescopic circular ring 502 to be contracted, the telescopic circular ring 502 at the upper side and the lower side can enable the upper telescopic fastening ring formed by the upper fastening outer ring 2 and the upper fastening inner ring 201 and the lower telescopic fastening ring formed by the lower fastening outer ring 3 and the lower fastening inner ring 301 to be contracted, the upper die holder 202 is fixed in the upper telescopic fastening ring, the lower die holder 302 is fixed in the lower telescopic fastening ring, then the upper die holder 202 and the lower die holder 302 are driven to be in contact with each other through the stretching of the upper and lower sets of vertical electric rods 105, a gap is formed between the molding sand in the upper die holder 202 and the lower die holder 302, the gap is formed into a cavity, at the moment, racks on the surfaces of the tooth shafts 103 are located in the upper die holder 4 and the lower die cavity, liquid molten iron is poured into the cavity through injection molding holes formed in the end faces of the upper die holder 202 and the lower die holder 302, and after the liquid molten iron is solidified, and the well lid is formed;

When the well lid needs to be demolded from the upper die holder 202 and the lower die holder 302, the servo motor 102 is started at this moment to drive the gear shaft 103 to rotate, and then the gear shaft 103 can drive the upper fastening outer ring 2 and the lower fastening outer ring 3 to rotate reversely, and further the upper fastening outer ring 2 and the lower fastening outer ring 3 can drive the upper die holder 202 and the lower die holder 302 to rotate reversely, at this moment, the upper die holder 202 and the lower die holder 302 and the well lid inside the upper die holder can rotate mutually, so that the surface of the well lid can be separated from the upper die holder 202 and the lower die holder 302, the viscosity of the well lid and the upper die holder 202 and the lower die holder 302 is reduced, the upper die holder 202 can drive the upper jack post 507 to rotate, and the lower jack post 508 can be driven to rotate in the process of moving from the concave position of the surface of the upper jack post 507 to the concave position of the upper fixing ring 203, at this moment, the upper jack post 303 can be pushed to move downwards by the concave position of the lower fixing ring surface, at this moment, the upper jack post 507 can be pushed to move downwards, the well lid 202 can be separated from the concave position of the upper die holder 302 from the upper die holder 302, and the upper die holder 302 can be further moved from the concave position of the upper die holder 302, and the upper die holder 202 can be further moved from the concave position to the concave position of the upper die holder 302, and the upper die holder 302 can be further moved from the concave position of the upper die holder 302, and the upper die cover can be moved from the concave position on the concave position of the upper die holder 302, at this position is further moved by the concave position on the upper die position of the upper jack post is moved by the upper jack post, and the upper side is moved by the upper side, and the face is moved down, and moved down is moved by the face is moved down.

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

Claims (7)

1. The molding press for well lid processing comprises a base frame (1) and is characterized in that an upper fastening outer ring (2) and a lower fastening outer ring (3) for fixing two groups of well lid molds are arranged above the base frame (1), tooth grooves (4) are formed in the surfaces of the upper fastening outer ring (2) and the lower fastening outer ring (3), and demolding structures (5) for quickly demolding the well lids are arranged on the upper fastening outer ring (2) and the lower fastening outer ring (3);

The base frame (1) comprises a linear frame (101), the linear frame (101) is vertically fixed on the base frame (1), a servo motor (102) is installed on the side face of the linear frame (101), a gear shaft (103) is fixed on an output shaft of the servo motor (102), an L-shaped frame (104) is fixed on the linear frame (101) at the rear, vertical electric rods (105) are installed on the L-shaped frame (104) and the middle of the base frame (1), and a transverse electric rod (106) is installed at one end of the inner side of the vertical electric rod (105);

The upper outer fastening ring (2) comprises an upper inner fastening ring (201), the upper inner fastening ring (201) is slidably connected between two groups of upper outer fastening rings (2), an upper die holder (202) is arranged on the inner side of the upper outer fastening ring (2), an upper fixed ring (203) is arranged on the outer side of the upper die holder (202), the lower outer fastening ring (3) comprises a lower inner fastening ring (301), the lower inner fastening ring (301) is slidably connected between two groups of lower outer fastening rings (3), a lower die holder (302) is arranged on the inner side of the lower outer fastening ring (3), and a lower fixed ring (303) is arranged on the outer side of the lower die holder (302);

The demolding structure (5) comprises an outer rotating groove (501), the outer rotating groove (501) is formed in the outer side of the inner wall of an upper fastening outer ring (2) and a lower fastening outer ring (3), a telescopic circular ring (502) is arranged in the outer rotating groove (501), an open fastening groove (503) is formed in the inner side of the inner wall of the upper fastening outer ring (2) and the inner side of the lower fastening outer ring (3), a limit groove (504) is formed in the inner side of the open fastening groove (503) in a radial mode, limiting blocks (505) are radially fixed on the outer sides of an upper mold base (202) and a lower mold base (302), stepped through grooves (506) are formed in the end faces of the upper mold base (202) and the lower mold base (302), an upper jacking column (507) is arranged in the stepped through grooves (506) on one side, a lower jacking column (508) is arranged in a sliding mode, one end, on the outer side of the upper jacking column (507) and one end of the lower jacking column (508) is fixedly provided with a half ball head (509), and the upper jacking column (508) is sleeved with the upper jacking column (510).

2. The molding press for well lid processing of claim 1, wherein the upper die holder (202) and the lower die holder (302) form a well lid die, molding sand is arranged in the upper die holder (202) and the lower die holder (302), a cavity is formed by a gap between the molding sand on the upper side and the molding sand on the lower side, and pouring holes are formed in end faces of the upper die holder (202) and the lower die holder (302).

3. A molding press for well lid processing according to claim 1, wherein the racks on the surface of the tooth shaft (103) are matched with the tooth grooves (4), and the tooth shaft (103) is meshed with the upper fastening outer ring (2) and the lower fastening outer ring (3) through the racks and the tooth grooves (4) on the surface of the tooth shaft.

4. The molding press for well lid processing of claim 1, wherein the transverse electric rod (106) is fixedly connected with an outer ring component part of the telescopic circular ring (502), molding sand is arranged inside the upper die holder (202) and the lower die holder (302), a well lid cavity is formed by gaps between the molding sand, concave-convex surfaces are arranged on the bottom surface of the upper fixed ring (203) and the upper end surface of the lower fixed ring (303), and the upper fixed ring (203) is slidably connected with an inner ring component part of the telescopic circular ring (502) through a bracket.

5. A molding press for well lid processing according to claim 1, wherein the upper fastening outer ring (2) is staggered with the upper fastening inner ring (201), the upper fastening outer ring (2) and the upper fastening inner ring (201) between the adjacent upper fastening outer ring (2) are connected in a sliding manner, the upper fastening outer ring (2) and the upper fastening inner ring (201) form an upper telescopic fastening ring, the lower fastening outer ring (3) and the lower fastening inner ring (301) are staggered, the lower fastening outer ring (3) and the lower fastening inner ring (301) between the adjacent lower fastening outer ring (3) are connected in a sliding manner, and the lower fastening outer ring (3) and the lower fastening inner ring (301) form a lower telescopic fastening ring.

6. The molding press for well lid processing of claim 1, wherein the telescopic circular ring (502) is composed of an outer ring and an inner ring, the outer ring and the inner ring are arranged in a staggered mode and slide mutually, the outer ring is connected with the outer rotary groove (501) in a rotary mode, the outer edges of the upper die holder (202) and the lower die holder (302) are located in the open fastening groove (503), and the upper die holder (202) and the lower die holder (302) are connected with the open fastening groove (503) through a limiting groove (504) and a limiting block (505).

7. The molding press for well lid processing according to claim 1, wherein two ends of the elastic sheet (510) on one side of the upper prop (507) are contacted with the upper die holder (202) and the upper prop (507), two ends of the elastic sheet (510) on one side of the lower prop (508) are contacted with the lower die holder (302) and the lower prop (508), and the hemispherical head (509) is contacted with the concave-convex surfaces of the upper fixed ring (203) and the lower fixed ring (303).