A mold structure that is easy to demould

Abstract

The utility model provides a mold structure that is easy to demold, belongs to the field of mold technology, and includes a lower mold body and a flange core. The lower mold body is provided with a lower model cavity, and a flange core cavity is provided at one end of the water outlet of the lower model cavity; the flange core is inserted into the flange core cavity, and a flange cavity is provided on the side of the flange core body close to the lower model cavity, and a protruding structure for forming a notch is provided on the inner wall of the flange cavity in the circumferential direction, and a plurality of protruding structures extend radially along the flange cavity, and a main core head cavity is provided on the upper end face of the flange core, and the flange core is radially divided into a plurality of block cores. When it is necessary to take out the cast rubber sheath, the rubber sheath is demolded upward together with the flange core, and then each block core is removed radially from the circumference of the flange. This demolding method is not only easy to operate, but also will not cause damage to the flange.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and more specifically, relates to a mold structure which is convenient for demoulding. Background Art

[0002] The rubber jacket is equipped with an impeller inside, and front and rear guard plates are installed on the front and rear sides respectively, which are the main flow-through parts. A flange is set at the outlet of the rubber jacket, and a notch is opened around the flange to facilitate the use of bolts to connect the pump pipe.

[0003] In the prior art, the flange at the water outlet of the rubber sheath is formed together with the body of the sheath and then demolded as a whole. During the demolding process, since the thickness of the flange is relatively thin and there are multiple notches opened in the circumferential direction, demolding is not only time-consuming and laborious, but also easily damaged when the flange area is forcibly pulled upwards. Utility Model Content

[0004] The utility model aims to provide a mold structure that is easy to demould, aiming to solve the problem that demoulding is not only time-consuming and labor-intensive, but also easily causes damage when the flange area is forcibly pulled upward.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a mold structure that is easy to demould, including:

[0006] A lower mold body, wherein the lower mold body is provided with a lower mold cavity, and a flange core cavity is provided at one end of the water outlet of the lower mold cavity;

[0007] A flange core is inserted into the flange core cavity, a flange cavity is arranged on the side of the flange core close to the lower model cavity, a protruding structure for forming a notch is circumferentially arranged on the inner wall of the flange cavity, a plurality of the protruding structures extend radially along the flange cavity, a main core head cavity is arranged on the upper end face of the flange core, and the flange core is radially divided into a plurality of block cores.

[0008] In one possible implementation, the flange core includes an integrally formed flange molding body and a flange core head, the flange cavity is located on a side of the flange molding body close to the lower model cavity, and the main core head cavity is opened on the upper end surfaces of the flange molding body and the flange core head.

[0009] In a possible implementation manner, an arc transition edge is provided between the flange forming body and the flange core head.

[0010] In a possible implementation, a first positioning core head is disposed at the bottom of the flange core head, and a first slot adapted to the first positioning core head is opened at the lower portion of the flange cavity.

[0011] In a possible implementation manner, the width of the first positioning core head decreases from top to bottom.

[0012] In a possible implementation, the flange core is radially divided into three segment cores, and the first positioning core head is located at the bottom of the middle segment core.

[0013] In a possible implementation, second positioning core heads are respectively provided on both sides of the flange core head, and second slots adapted to the two second positioning core heads are respectively opened on both sides of the flange cavity.

[0014] In a possible implementation manner, the width of the second positioning core head decreases from top to bottom.

[0015] In a possible implementation, the flange core is evenly divided into two segment cores along the radial direction, and two second positioning core heads are respectively arranged on the outer sides of the two segment cores.

[0016] In a possible implementation, a side surface of the flange cavity close to the lower mold cavity is an inclined surface, and the inclined surface is inclined from bottom to top toward one side of the lower mold cavity.

[0017] The beneficial effect of a mold structure that is easy to demold provided by the utility model is that: compared with the prior art, a flange core is inserted into a flange core cavity, a flange cavity is provided on one side of the flange core close to the lower mold cavity, and a plurality of protrusion structures are provided on the inner wall circumferentially of the flange cavity for forming a notch in the circumference of the flange. Among them, the flange core is radially divided into a plurality of block cores. When using a mold structure that is easy to demold provided by the utility model, a plurality of block cores are assembled into a whole flange core, and the whole flange core is inserted from top to bottom into the flange core cavity, thereby forming a flange cavity for forming the flange. When it is necessary to take out the cast rubber sheath, the rubber sheath is demolded upward together with the flange core, and then each block core is removed radially from the circumference of the flange. This demolding method is not only easy to operate, but also will not cause damage to the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A top view of a mold structure that is convenient for demoulding provided by the utility model;

[0020] Figure 2 A top view of the lower mold body provided in the first embodiment of the utility model;

[0021] Figure 3 A front view of a flange core provided in the first embodiment of the utility model;

[0022] Figure 4 A rear view of the flange core provided in the first embodiment of the utility model;

[0023] Figure 5 A top view of the lower mold body provided for the second embodiment of the utility model;

[0024] Figure 6 This is a front view of a flange core provided in the second embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Lower mold body; 2. Lower mold cavity; 3. Flange core cavity; 4. Flange cavity; 5. Flange molding body; 6. Flange core head; 7. Raised structure; 8. Main core head cavity; 9. Block core; 10. Arc transition edge; 11. First positioning core head; 12. First slot; 13. Second positioning core head; 14. Second slot; 15. Inclined surface. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] See also Figures 1 to 6 Now, a mold structure that is convenient for demoulding provided by the utility model is described. A mold structure that is convenient for demoulding includes a lower mold body 1 and a flange core.

[0029] The lower mold body 1 has a lower model cavity 2, and a flange core cavity 3 is provided at one end of the water outlet of the lower model cavity 2; the flange core is inserted in the flange core cavity 3, and a flange cavity 4 is provided on the side of the flange core body close to the lower model cavity 2, and a protruding structure 7 for forming a notch is circumferentially provided on the inner wall of the flange cavity 4, and multiple protruding structures 7 extend radially along the flange cavity 4, and a main core head cavity 8 is provided on the upper end face of the flange core, and the flange core is radially divided into multiple block cores 9.

[0030] The utility model provides a mold structure that is easy to demold. Compared with the prior art, the flange core is inserted into the flange core cavity 3, and the flange core is provided with a flange cavity 4 on the side close to the lower mold cavity 2. The inner wall of the flange cavity 4 is circumferentially provided with multiple protrusion structures 7 for forming the circumferential notch of the flange. Among them, the flange core is divided into multiple block cores 9 along the radial direction. When the mold structure that is easy to demold provided by the utility model is used, multiple block cores 9 are assembled into a whole flange core, and the whole flange core is inserted into the flange core cavity 3 from top to bottom, thereby forming a flange cavity 4 for forming the flange. When it is necessary to take out the cast rubber sheath, the rubber sheath is demolded upward together with the flange core, and then each block core 9 is removed from the circumference of the flange along the radial direction. This demolding method is not only easy to operate, but also will not cause damage to the flange.

[0031] See also Figure 1 The flange core includes an integrally formed flange forming body 5 and a flange core head 6, the flange cavity 4 is located on the side of the flange forming body 5 close to the lower mold cavity 2, and the main core head cavity 8 is opened on the upper end surfaces of the flange forming body 5 and the flange core head 6. The flange forming body 5 and the flange core head 6 are both coaxial semi-cylindrical structures, and the outer diameter of the flange forming body 5 is greater than the outer diameter of the flange core head 6.

[0032] Preferably, an arc transition edge 10 is provided between the flange forming body 5 and the flange core head 6, which can facilitate the overall demolding of the flange core. An arc transition edge 10 is also provided at the corresponding position of the flange core cavity 3. The radius of the arc transition edge 10 of the flange core cavity 3 is greater than the radius of the arc transition edge 10 between the flange forming body 5 and the flange core head 6, which facilitates the smooth insertion of the flange core into the flange core cavity 3.

[0033] In the first embodiment, see Figures 2 to 4 The bottom of the flange core head 6 is provided with a first positioning core head 11, and the lower part of the flange cavity 4 is provided with a first slot 12 adapted to the first positioning core head 11. The first positioning core head 11 is inserted into the first slot 12, which can guide and position the flange core head 6.

[0034] Preferably, the width of the first positioning core head 11 decreases from top to bottom, and similarly, the width of the first slot 12 also decreases from top to bottom, and the insertion and fitting relationship between the two is utilized to guide the flange core head 6 into the flange core cavity 3.

[0035] Specifically, the flange core is radially divided into three segmented cores 9, the segmented cores 9 on both sides are symmetrically arranged, and the first positioning core head 11 is installed at the bottom of the middle segmented core 9. When installing the flange core, the middle segmented core 9 is first installed using the first positioning core head 11, and after the middle segmented core 9 is installed in place, the segmented cores 9 on both sides are installed respectively, which can reduce the situation where the outer ends of the segmented cores 9 on both sides are inside out relative to the parting surface.

[0036] In the second embodiment, see Figures 5 and 6 The two sides of the flange core head 6 are respectively provided with second positioning core heads 13, and the two sides of the flange cavity 4 are respectively provided with second slots 14 adapted to the two second positioning core heads 13. The two second positioning core heads 13 are respectively inserted into the second slots 14, which can guide and position the flange core head 6.

[0037] Preferably, the width of the second positioning core head 13 decreases from top to bottom, and similarly, the width of the second slot 14 also decreases from top to bottom, and the insertion and fitting relationship between the two is utilized to guide the flange core head 6 into the flange core cavity 3.

[0038] Specifically, the flange core is evenly divided into two segment cores 9 along the radial direction, the two segment cores 9 are symmetrical to each other, and the two second positioning core heads 13 are respectively arranged on the outside of the two segment cores 9. When installing the flange core, the segment core 9 in the middle is installed using the second positioning core head 13, and the two segment cores 9 on both sides are installed separately, which can reduce the situation where the outer ends of the segment cores 9 on both sides are inward and outward relative to the parting surface. When the outer ends of the two segment cores 9 are coplanar with the parting surface, it means that the inner ends of the two segment cores 9 are completely fitted.

[0039] See also Figure 2 and Figure 5 The side of the flange cavity 4 close to the lower mold cavity 2 is an inclined surface 15, and the inclined surface 15 is inclined from bottom to top toward the side of the lower mold cavity 2. Similarly, the side of the flange forming body 5 close to the lower mold cavity 2 is also set as an inclined surface 15, and the two inclined surfaces 15 are adapted to each other, which facilitates the insertion and extraction of the core into the corresponding cavity, and the operation is more convenient.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold structure that is easy to demould, characterized in that: include: A lower mold body (1), wherein the lower mold body (1) is provided with a lower mold cavity (2), and a flange core cavity (3) is provided at one end of the water outlet of the lower mold cavity (2); A flange core is inserted into the flange core cavity (3); a flange cavity (4) is arranged on the side of the flange core close to the lower mold cavity (2); a protruding structure (7) for forming a notch is arranged on the inner wall of the flange cavity (4); a plurality of the protruding structures (7) extend radially along the flange cavity (4); a main core head cavity (8) is arranged on the upper end surface of the flange core; and the flange core is radially divided into a plurality of segmented cores (9).

2. A mold structure for easy demoulding as claimed in claim 1, characterized in that: The flange core comprises an integrally formed flange molding body (5) and a flange core head (6); the flange cavity (4) is located on a side of the flange molding body (5) close to the lower mold cavity (2); and the main core head cavity (8) is opened on the upper end surfaces of the flange molding body (5) and the flange core head (6).

3. A mold structure for easy demoulding as claimed in claim 2, characterized in that: A circular arc transition edge (10) is provided between the flange forming body (5) and the flange core head (6).

4. A mold structure for easy demoulding as claimed in claim 2, characterized in that: A first positioning core head (11) is arranged at the bottom of the flange core head (6), and a first slot (12) adapted to the first positioning core head (11) is opened at the lower part of the flange cavity (4).

5. A mold structure for easy demoulding as claimed in claim 4, characterized in that: The width of the first positioning core head (11) decreases from top to bottom.

6. A mold structure for easy demoulding as claimed in claim 4, characterized in that: The flange core is radially divided into three segmented cores (9), and the first positioning core head (11) is located at the bottom of the middle segmented core (9).

7. A mold structure for easy demoulding as claimed in claim 2, characterized in that: Second positioning core heads (13) are respectively arranged on both sides of the flange core head (6), and second slots (14) adapted to the two second positioning core heads (13) are respectively opened on both sides of the flange cavity (4).

8. A mold structure for easy demoulding as claimed in claim 7, characterized in that: The width of the second positioning core head (13) decreases from top to bottom.

9. A mold structure for easy demoulding as claimed in claim 7, characterized in that: The flange core is evenly divided into two segmented cores (9) along the radial direction, and the two second positioning core heads (13) are respectively arranged on the outsides of the two segmented cores (9).

10. A mold structure for easy demoulding according to any one of claims 1 to 9, characterized in that: The side surface of the flange cavity (4) close to the lower mold cavity (2) is an inclined surface (15), and the inclined surface (15) is inclined from bottom to top toward one side of the lower mold cavity (2).

Images