CN219466770U - Polyurethane sealing ball casting mold - Google Patents

Abstract

The utility model discloses a polyurethane sealing ball casting mold, which comprises: a first half mold provided with a first sprue; the sealing die is partially embedded into the first pouring gate, and the shape and the size of the transverse section and the longitudinal section of the embedded part are matched with those of the first pouring gate; the second half mould is arranged at one side of the first half mould and forms a spherical mould cavity with the first half mould, and the second half mould is provided with a second pouring gate; the support die is used for being connected with the second half die in a matching way, is provided with a support block matched with the shape and the size of the cross section of the second pouring opening, the longitudinal size of the support block is larger than the depth of the second pouring opening, and the support block is used for supporting the metal ball and enabling the metal ball to be concentric with the die cavity; and the replacement die is used for being connected with the second half die in a matching way, and is provided with a first sealing block matched with the shape and the size of the transverse section and the longitudinal section of the second pouring gate. The polyurethane sealing ball casting mold has the advantage of high production quality.

Description

Polyurethane sealing ball casting mold

Technical Field

The utility model relates to the technical field of polyurethane sealing ball production equipment, in particular to a polyurethane sealing ball casting mold.

Background

The polyurethane sealing ball which is required to be used in a high-pressure environment consists of a polyurethane layer of an outer ring and a metal ball at the center, and during production, a polyurethane material is cast and wrapped outside the metal ball by a mold, and then the mold is pressed by an oil press with a heating function and is kept warm for a period of time (the physical property of the material is ensured by heat preservation, and the physical property cannot be ensured by direct cooling) so as to form the sealing ball. During production, the metal ball needs to be in the very center of the whole sealing ball, namely, the concentricity of the metal ball and the polyurethane layer needs to be ensured so as to ensure the product quality, but the concentricity of the metal ball and the polyurethane layer is difficult to ensure by a casting die in the prior art, and the produced sealing ball has poor quality.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the polyurethane sealing ball casting mold with high production quality.

According to an embodiment of the utility model, a polyurethane sealing ball casting mold comprises: a first half mold provided with a first sprue; the sealing die is partially embedded into the first pouring gate, and the shape and the size of the transverse section and the longitudinal section of the embedded part are matched with those of the first pouring gate; the second half mould is arranged at one side of the first half mould and forms a spherical mould cavity with the first half mould, and the second half mould is provided with a second pouring gate; the support die is used for being connected with the second half die in a matching way, and is provided with a support block matched with the shape and the size of the cross section of the second pouring opening, the longitudinal size of the support block is larger than the depth of the second pouring opening, and the support block is used for supporting the metal ball and enabling the metal ball to be concentric with the die cavity; and the replacement die is used for being connected with the second half die in a matching way, and is provided with a first sealing block matched with the shape and the size of the transverse section and the longitudinal section of the second pouring gate.

The polyurethane sealing ball casting mold provided by the embodiment of the utility model has at least the following beneficial effects:

through setting up first half mould, seal mould, second half mould, supporting mould, replacement mould, can make supporting mould and second half mould, first half mould assembly together at the same time, make the metal ball place in the die cavity in, utilize the supporting shoe to support the metal ball and make it concentric with the die cavity, the polyurethane material is pour to the first pouring gate of rethread first half mould, utilize the first pouring gate of sealing mould shutoff, make polyurethane layer possess high concentricity with the metal ball, overturn whole mould after the preliminary preparation, take down the supporting mould, pour with the breach that the make up supporting shoe leads to from the second pouring gate, then replace replacement mould shutoff second pouring gate, in order to make complete sealing ball, concentricity and integrality are high, thereby production quality is high.

According to some embodiments of the utility model, the first gate and the second gate each comprise a tapered section and a straight section from outside to inside, the tapered sections being necked-in from outside to inside, the straight sections being equal in diameter.

According to some embodiments of the utility model, the second half-mould is provided with an annular conical protrusion towards an end edge of the first half-mould, the outer circumferential surface of the conical protrusion being inclined inwards towards the first half-mould, the first half-mould being provided with a groove matching the conical protrusion, the conical protrusion being embedded in the groove.

According to some embodiments of the utility model, the outer end of the junction of the first and second mold halves is formed with a first operating groove.

According to some embodiments of the utility model, a locking mechanism is further included for locking the closing die, the first half-die, the second half-die, the supporting die together, or locking the closing die, the first half-die, the second half-die, the replacement die together.

According to some embodiments of the present utility model, the sealing mold, the first mold half and the second mold half are sequentially arranged along a vertical direction, the first pouring gate and the second pouring gate extend vertically, a first caulking groove is formed on a surface of the sealing mold, which faces away from the first mold half, a second caulking groove is formed on a surface of the supporting mold, which faces away from the supporting block, a third caulking groove is formed on a surface of the replacing mold, which faces away from the first sealing block, and the locking mechanism comprises a locking frame, the locking frame comprises a connecting portion and two embedding portions, the two embedding portions are respectively and vertically arranged at two ends of the connecting portion in a length direction, one embedding portion is used for embedding the first caulking groove, the other embedding portion is used for embedding the second caulking groove or the third caulking groove, so as to limit relative vertical displacement among the sealing mold, the first mold half, the second mold half and the supporting mold, or limit relative vertical displacement among the sealing mold, the first mold half, the second mold half and the replacing mold.

According to some embodiments of the utility model, the outer wall of the first half mold or the second half mold is provided with a mounting seat, the locking mechanism further comprises a limiting mechanism arranged on the mounting seat, the limiting mechanism is used for propping against one side of the connecting portion, which is away from the mounting seat, to limit, so that one of the embedded portions is kept in a state of being embedded in the first embedded groove, the other embedded portion is kept in a state of being embedded in the second embedded groove or the third embedded groove, and the limiting mechanism can be adjusted to release limiting of the connecting portion.

According to some embodiments of the utility model, a mounting post is disposed on a side of the mounting seat facing away from the first half mold or the second half mold, the limiting mechanism comprises a limiting block and an elastic member, the limiting block is rotatably and slidably sleeved on the mounting post and is used for limiting against a side of the connecting portion facing away from the mounting seat, and the elastic member is used for applying an elastic force towards the mounting seat to the limiting block, so that the limiting block can abut against a side of the connecting portion facing away from the mounting seat.

According to some embodiments of the utility model, the elastic member is a spring, the spring is sleeved on the mounting column, a gasket and a nut are sequentially arranged on one side, away from the mounting seat, of the limiting block, and two ends of the spring are respectively abutted against the gasket and the limiting block.

According to some embodiments of the utility model, a first positioning groove for embedding the limiting block is formed on one side of the connecting portion, which is away from the mounting seat, and is used for limiting the rotation of the limiting block.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a first assembly mode according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second assembly mode according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the external structure of the first assembly mode according to the embodiment of the present utility model;

fig. 4 is an enlarged schematic view at a in fig. 3.

Reference numerals:

first mold half 100, first runner 110, groove 120, first operating groove 130, mounting base 140, mounting post 141, spacer 142, nut 143, second positioning groove 144;

a sealing die 200, a first caulking groove 210 and a second sealing block 220;

a second mold half 300, a mold cavity 301, a second sprue 310, a conical projection 320;

a support die 400, a support block 410, a second caulking groove 420;

a replacement die 500, a first block 510, a third caulking groove 520;

the locking mechanism 600, the locking frame 610, the connecting portion 611, the embedded portion 612, the first positioning groove 613, the limiting mechanism 620, the limiting block 621, and the elastic member 622.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, a polyurethane sealing ball casting mold according to an embodiment of the present utility model includes: a first half mold 100, a sealing mold 200, a second half mold 300, a supporting mold 400, and a replacement mold 500.

The first mold half 100 is provided with a first gate 110, and in particular, the first mold half 100 has a hemispherical cavity and communicates with the first gate 110.

The sealing die 200 is partially embedded in the first sprue 110, and the embedded portion is matched with the shape and the size of the transverse cross section and the longitudinal cross section of the first sprue 110; specifically, the sealing mold 200 is provided with a convex second sealing block 220, the second sealing block 220 is embedded into the first pouring gate 110, the shape and the size of the transverse cross section and the longitudinal cross section of the second sealing block 220 are matched with those of the first pouring gate 110, and obviously, the inner end surface of the second sealing block 220 is a spherical surface and is matched with the inner wall of the first half mold 100 to realize smooth transition.

The second half mold 300 is arranged on one side of the first half mold 100 and forms a spherical mold cavity 301 with the first half mold 100, and the second half mold 300 is provided with a second sprue gate 310; specifically, the second mold half 300 also has a hemispherical cavity and communicates with the second gate 310.

The support mold 400 is used for matching connection of the second mold half 300, the support mold 400 is provided with a support block 410 matched with the cross section shape and the size of the second sprue gate 310, the longitudinal size of the support block 410 is larger than the depth of the second sprue gate 310, and it is understood that the support block 410 can be embedded into the second sprue gate 310 and extend into the mold cavity 301 when the support mold 400 is matched with the second mold half 300; specifically, the extending line of the central axis of the second sprue 310 passes through the sphere center of the mold cavity 301, the end surface of the supporting block 410 away from the supporting mold 400 is a spherical surface and is matched with the exterior Zhou Bishi of the metal ball, after the supporting block 410 is embedded into the second sprue 310 and extends into the mold cavity 301, the end surface of the supporting block 410 away from the supporting mold 400 is concentric with the mold cavity 301 and is used for supporting the metal ball and making the metal ball concentric with the mold cavity 301.

The replacement mold 500 is used for matching connection with the second mold half 300, the replacement mold 500 is provided with a first sealing block 510 which is matched with the shape and the size of the transverse cross section and the longitudinal cross section of the second pouring opening 310, and it is understood that when the replacement mold 500 is matched and connected with the second mold half 300, the first sealing block 510 is embedded into the second pouring opening 310, the end surface of the first sealing block 510 far away from the replacement mold 500 is a spherical surface, and the first sealing block 510 can be matched with the inner wall of the second mold half 300 after being embedded into the second pouring opening 310, so that the first sealing block 510 is in smooth transition.

Specifically, the polyurethane sealing ball casting mold of the embodiment has two assembly modes, and the first assembly mode is: the support mold 400 is assembled with the second mold half 300, the first mold half 100, and the sealing mold 200; the second assembly mode is: the replacement mold 500 is assembled with the second mold half 300, the first mold half 100, and the capping mold 200. The two assembly modes correspond to two casting processes, when the first casting is performed, the first assembly mode is used, the supporting die 400 is firstly connected with the second half die 300 in a matching way, and is arranged on a structural support, then a metal ball is arranged, the metal ball is supported by the supporting block 410, the first half die 100 is arranged again, the metal ball is concentric with the die cavity 301, then polyurethane material is cast from the first casting opening 110, the sealing die 200 is completely cast, then the sealing die 200 is put into an oil press and is pressed down for a period of time to initially manufacture a sealing ball, and the concentricity of the semi-finished sealing ball manufactured by the first casting is very high, but a gap is generated at the position of the supporting block 410; and then performing secondary pouring, wherein the whole die is turned over by using a secondary assembly mode, the supporting die 400 is taken down, then pouring is performed from the secondary pouring opening 310, a notch generated by the primary pouring is repaired, then the secondary pouring opening 310 is sealed by using the replacement die 500, and then the finished product is manufactured by placing the finished product into an oil press and pressing for heat preservation. It should be noted that, during the first pouring and the second pouring, the polyurethane material needs to be overflowed into the first pouring gate 110 and the second pouring gate 310, and the sealing mold 200 and the replacing mold 500 are used to extrude the redundant material, so as to ensure that the final product is a complete ball. Through the arrangement, the integrity of the sealing ball and the concentricity of the metal ball of the sealing ball and the polyurethane layer can be ensured, and the production quality is high.

Referring to fig. 1 and 2, it will be appreciated that the first gate 110 and the second gate 310 each include a tapered section and a straight section from the outside to the inside, the tapered section being tapered from the outside to the inside, the straight sections having equal diameters, and that the second seal 220 can be easily inserted into or removed from the first gate 110 and the first seal 510 or the support block 410 can be easily inserted into or removed from the second gate 310, relative to the entire first gate 110 and the second gate 310 having the same diameter.

Referring to fig. 1, it will be appreciated that the second mold half 300 is provided with an annular tapered protrusion 320 toward one end edge of the first mold half 100, the outer circumferential surface of the tapered protrusion 320 is inclined inward toward the first mold half 100, the first mold half 100 is provided with a groove 120 matching the tapered protrusion 320, and the tapered protrusion 320 is inserted into the groove 120 to facilitate the butt assembly of the first mold half 100 and the second mold half 300.

Referring to fig. 1 and 2, it can be understood that the outer end of the connection portion between the first half mold 100 and the second half mold 300 is formed with a first operation groove 130, so as to facilitate the operator to insert tools such as a crow bar to pry open and separate the first half mold 100 and the second half mold 300, and it should be noted that, during pouring, polyurethane material easily enters into the gap between the first half mold 100 and the second half mold 300, which results in difficulty in separating the two, so that the first operation groove 130 is provided to facilitate the separation operation. Further, in the present embodiment, the first half mold 100 and the second half mold 300 are further provided with a second operation groove and a third operation groove, which are similar to the first operation groove 130 in function, respectively, the second operation groove facilitates the removal of the sealing mold 200, and the third operation groove facilitates the removal of the supporting mold 400 or the replacement mold 500.

Referring to fig. 1 to 4, it will be appreciated that the polyurethane sealing ball casting mold of the present embodiment further includes a locking mechanism 600, wherein the locking mechanism 600 is used to lock the sealing mold 200, the first mold half 100, the second mold half 300, and the supporting mold 400 together, i.e., to lock the components together when assembled according to the first assembly mode; or locking the closure die 200, the first half die 100, the second half die 300, and the replacement die 500 together, i.e., locking the components together when assembled in accordance with the second assembly mode; the locking mechanism 600 is provided to prevent the components from disengaging from each other when the mold is moved or flipped.

Further, handles are provided on the sealing mold 200, the first mold half 100, the second mold half 300, the supporting mold 400, and the replacement mold 500 to provide a force application position for an operator.

Referring to fig. 1 to 3, it will be understood that the sealing mold 200, the first mold half 100, and the second mold half 300 are sequentially disposed along a vertical direction, opposite sides of the first mold half 100 and the second mold half 300 are planes parallel to each other, the first gate 110 and the second gate 310 are respectively disposed on opposite sides of the first mold half 100 and the second mold half 300 and vertically extend, a first caulking groove 210 is disposed on a surface of the sealing mold 200 facing away from the first mold half 100, a second caulking groove 420 is disposed on a surface of the supporting mold 400 facing away from the supporting block 410, a third caulking groove 520 is disposed on a surface of the replacing mold 500 facing away from the first sealing block 510, the locking mechanism 600 includes a locking frame 610, the locking frame 610 includes a connecting portion 611 and two embedded portions 612, the two embedded portions 612 are respectively vertically disposed at two ends of the connecting portion 611 in a length direction, one of the embedded parts 612 is used for being embedded into the first embedded groove 210, the other embedded part 612 is used for being embedded into the second embedded groove 420 or the third embedded groove 520 so as to limit the relative vertical displacement among the sealing die 200, the first half die 100, the second half die 300 and the supporting die 400 or limit the relative vertical displacement among the sealing die 200, the first half die 100, the second half die 300 and the replacing die 500, and particularly, when the polyurethane sealing ball casting die of the embodiment is assembled according to the first assembling mode, the two embedded parts 612 are respectively used for being embedded into the first embedded groove 210 and the second embedded groove 420, and when the polyurethane sealing ball casting die is assembled according to the second assembling mode, the two embedded parts 612 are respectively embedded into the first embedded groove 210 and the third embedded groove 520, and the locking frame 610 is arranged so as to limit the relative vertical displacement among a plurality of parts, so that the two parts are prevented from being separated from each other, and the structure is simple and practical. Specifically, in the present embodiment, the locking mechanism 600 is provided with at least two.

Further, the sealing mold 200 and the first mold half 100, the first mold half 100 and the second mold half 300, and the second mold half 300 and the supporting mold 400 and the replacing mold 500 are respectively provided with mutually matched convex and concave positions so as to limit the relative rotation between the two molds.

Referring to fig. 3 and 4, it may be understood that the outer wall of the first half mold 100 or the second half mold 300 is provided with the mounting seat 140, the locking mechanism 600 further includes a limiting mechanism 620 disposed on the mounting seat 140, and the limiting mechanism 620 is used for abutting against one side of the connecting portion 611 facing away from the mounting seat 140 to limit, so that one of the embedded portions 612 is kept embedded in the first embedded groove 210, and the other embedded portion 612 is kept embedded in the second embedded groove 420 or the third embedded groove 520, so that the locking frame 610 is kept in a state of limiting the relative vertical displacement between the sealing mold 200, the first half mold 100, the second half mold 300 and the supporting mold 400, or in a state of limiting the relative vertical displacement between the sealing mold 200, the first half mold 100, the second half mold 300 and the replacing mold 500, thereby improving structural stability; it is appreciated that the limiting mechanism 620 can be adjusted to release the limit on the connection portion 611 to facilitate the removal of the locking bracket 610.

Referring to fig. 3 and 4, it may be understood that a side of the mounting seat 140 away from the first half mold 100 or the second half mold 300 is provided with a mounting post 141, the limiting mechanism 620 includes a limiting block 621 and an elastic member 622, the limiting block 621 can rotate and slidably sleeve the mounting post 141 for limiting against a side of the connection portion 611 away from the mounting seat 140, the elastic member 622 is used for applying an elastic force towards the mounting seat 140 to the limiting block 621 so that the limiting block 621 can abut against a side of the connection portion 611 away from the mounting seat 140, and it may be understood that the limiting block 621 can rotate to a side of the connection portion 611 so as to facilitate removal of the locking frame 610, and in this embodiment, the limiting block 621 abuts against a side of the connection portion 611 away from the mounting seat 140 by using an elastic force of the elastic member 622, which is simple and reliable in structure; further, a second positioning groove 144 vertically penetrating is formed on a surface of the mounting seat 140 facing the limiting mechanism 620, and when the limiting block 621 abuts against one side of the connecting portion 611 facing away from the mounting seat 140, the connecting portion 611 is partially embedded into the second positioning groove 144.

Referring to fig. 3 and 4, it can be understood that the elastic member 622 is a spring, the spring is sleeved on the mounting post 141, the mounting post 141 is sequentially provided with a gasket 142 and a nut 143 on one side of the stop block 621 away from the mounting seat 140, two ends of the spring respectively abut against the gasket 142 and the stop block 621 to apply elastic force towards the mounting seat 140 to the stop block 621, and the replacement of the spring can be facilitated by setting the gasket 142 and the nut 143, so that the practicability is strong.

Referring to fig. 3 and 4, it can be understood that, a first positioning groove 613 is provided on a side of the connection portion 611 facing away from the mounting seat 140, in which the stopper 621 is embedded, for limiting rotation of the stopper 621, so that when the stopper 621 abuts against the connection portion 611 to limit the rotation, the stopper 621 can be embedded in the first positioning groove 613, preventing the stopper 621 from rotating to one side of the connection portion 611 and losing the limiting effect, and the structure is more stable and reliable.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. A polyurethane sealing ball casting mold, comprising:

a first mold half (100) provided with a first gate (110);

a sealing die (200) partially embedded in the first sprue (110), and the embedded portion is matched with the first sprue (110) in both transverse and longitudinal cross-sectional shape and size;

a second half mold (300) arranged on one side of the first half mold (100) and forming a spherical mold cavity (301) with the first half mold (100), wherein the second half mold (300) is provided with a second pouring gate (310);

-a support die (400) for mating connection with the second half die (300), provided with a support block (410) matching the cross-sectional shape and size of the second sprue (310), the longitudinal dimension of the support block (410) being greater than the depth of the second sprue (310), the support block (410) being adapted to support and to center the metal sphere with the die cavity (301);

and a replacement mould (500) for matching connection with the second half mould (300), wherein a first sealing block (510) with the shape and the size of the transverse cross section and the longitudinal cross section of the second pouring opening (310) are matched.

2. The polyurethane sealing sphere casting mold according to claim 1, wherein: the first pouring gate (110) and the second pouring gate (310) comprise a conical opening section and a straight opening section from outside to inside, the conical opening section is in a closing-in shape from outside to inside, and the diameters of the straight opening sections are equal.

3. The polyurethane sealing sphere casting mold according to claim 1, wherein: the second half mold (300) is provided with an annular conical protrusion (320) towards one end edge of the first half mold (100), the outer circumferential surface of the conical protrusion (320) is inclined inwards towards the first half mold (100), the first half mold (100) is provided with a groove (120) matched with the conical protrusion (320), and the conical protrusion (320) is embedded into the groove (120).

4. A polyurethane sealing sphere casting mold according to claim 3, wherein: a first operation groove (130) is formed at the outer end of the joint of the first half die (100) and the second half die (300).

5. A polyurethane sealing sphere casting mold according to claim 3, wherein: the sealing mold further comprises a locking mechanism (600) which is used for locking the sealing mold (200), the first half mold (100), the second half mold (300) and the supporting mold (400) together or locking the sealing mold (200), the first half mold (100), the second half mold (300) and the replacing mold (500) together.

6. The polyurethane sealing sphere casting mold according to claim 5, wherein: sealing mould (200), first half mould (100), second half mould (300) set gradually along vertical direction, first pouring gate (110), second pouring gate (310) are all vertical to extend, sealing mould (200) deviate from the one side of first half mould (100) is equipped with first caulking groove (210), supporting mould (400) deviate from the one side of supporting block (410) is equipped with second caulking groove (420), replacing mould (500) deviate from the one side of first sealing block (510) is equipped with third caulking groove (520), locking mechanism (600) includes latch frame (610), latch frame (610) include connecting portion (611) and two embedded portion (612), two embedded portion (612) are respectively perpendicular to be located connecting portion (611) length direction's both ends, one of them embedded portion (612) are used for embedding first caulking groove (210), another embedded portion (612) are used for embedding second caulking groove (420) or third caulking groove (520) are equipped with to replace mould (500) deviate from one side of first sealing block (510), locking mechanism (600) includes latch frame (610), two embedded portion (612) are perpendicular to limit between sealing mould (100), first half mould (300), second half mould (300), opposite to sealing mould (300) Relative vertical displacement between the replacement dies (500).

7. The polyurethane sealing sphere casting mold according to claim 6, wherein: the first half die (100) or the second half die (300) is provided with a mounting seat (140) on the outer wall, the locking mechanism (600) further comprises a limiting mechanism (620) arranged on the mounting seat (140), the limiting mechanism (620) is used for limiting one side, deviating from the mounting seat (140), of the connecting portion (611) against each other, so that one embedded portion (612) is kept embedded in the state of the first embedded groove (210), the other embedded portion (612) is kept embedded in the state of the second embedded groove (420) or the third embedded groove (520), and the limiting mechanism (620) can be adjusted to release limiting of the connecting portion (611).

8. The polyurethane sealing sphere casting mold according to claim 7, wherein: one side of mount pad (140) deviates from first half mould (100) or second half mould (300) is equipped with erection column (141), stop gear (620) are including stopper (621) and elastic component (622), stopper (621) can rotate and cover slidingly locate erection column (141), be used for with connecting portion (611) deviates from one side of mount pad (140) offsets spacing, elastic component (622) are used for exerting the orientation elastic force of mount pad (140) gives stopper (621), so that stopper (621) can support tightly connecting portion (611) deviates from one side of mount pad (140).

9. The polyurethane sealing sphere casting mold according to claim 8, wherein: the elastic piece (622) is a spring, the spring is sleeved on the mounting column (141), one side, deviating from the mounting seat (140), of the limiting block (621) of the mounting column (141) is sequentially provided with a gasket (142) and a nut (143), and two ends of the spring are respectively abutted against the gasket (142) and the limiting block (621).

10. The polyurethane sealing sphere casting mold according to claim 8, wherein: one side of the connecting part (611) away from the mounting seat (140) is provided with a first positioning groove (613) for embedding the limiting block (621), and the first positioning groove is used for limiting the rotation of the limiting block (621).