Mill angle lining and mold for mill angle lining

Abstract

The utility model belongs to the technical field of mills, and discloses a mold for an angle lining of a mill. The mold comprises a hot plate, a bottom mold and a mold cover, a plurality of limiting pieces are arranged on the hot plate; the bottom die is placed on the hot plate, and the limiting pieces are arranged on the periphery of the bottom die at intervals so as to limit the position of the bottom die. The bottom die comprises an insert and a frame, the insert corresponds to the angle lining to be machined in shape and size, and the frame is fixedly arranged on the insert in a matched and sleeved mode; a plurality of glue injection grooves, a plurality of glue injection holes, a plurality of overflow grooves and a plurality of overflow holes are formed in the mold cover; the glue injection hole is formed in the glue injection groove, and the overflow hole is formed in the overflow groove; wherein before glue filling, the mold cover and the bottom mold are closed and fixed, and the glue injection hole is located under the glue injection head. When the angle lining is processed, the die is not damaged, and the appearance integrity of an angle lining product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of grinders, in particular to a mould for a corner lining of a grinder. Background Art

[0002] Tip strips, liners and other components are installed on the end face and cylinder of the mill. In order to facilitate the installation and disassembly of such components, corner liners are also installed at the ends of adjacent tip strips or liners.

[0003] Corner linings are mostly rubber structures. During the processing, first, a base mold corresponding to its structure is prepared, and glue is filled into the base mold; secondly, after the glue filling is completed, an upper mold is placed on the glue-filled side for mold closing; finally, the corner lining is obtained by demolding after vulcanization.

[0004] It can be seen that the above-mentioned molds used for corner lining processing are mostly semi-open pressing structures. When this type of mold is used for corner lining processing, since the volume of rubber of the same mass after vulcanization is slightly larger than the volume before vulcanization, the height of the rubber material during filling is generally slightly higher than the height of the structure corresponding to the corner lining in the bottom mold; on the one hand, this leads to the defect of gnawing the mold when the upper mold is closed, which causes damage to the mold and affects its service life. On the other hand, it may also cause a large pressure inside the bottom mold when the upper mold is closed, causing the rubber material to overflow, resulting in appearance defects in the final corner lining product. Utility Model Content

[0005] The utility model aims to provide a mould for corner lining of a grinder, so as to improve the technical problems that the corner lining products have appearance defects and are easy to cause damage to the mould when the corner lining is processed based on the existing mould.

[0006] In order to achieve the above purpose, the utility model proposes the following technical solutions:

[0007] In a first aspect, the technical solution provides a mold for a grinder corner lining, which comprises, from bottom to top, a hot plate, a bottom mold and a mold cover;

[0008] The hot plate is provided with a plurality of limiters;

[0009] The bottom mold is placed on the hot plate, and the limiting members are arranged around the bottom mold to limit the position of the bottom mold; the bottom mold includes an inlay and a frame, the inlay corresponds to the shape and size of the corner lining to be processed, and the frame is adapted to be fixed on the inlay;

[0010] The mold cover is provided with a plurality of glue injection grooves, a plurality of glue injection holes, a plurality of overflow grooves and a plurality of overflow holes; the glue injection holes are opened in the glue injection grooves, and the overflow holes are opened in the overflow grooves; wherein, before glue filling, the mold cover and the bottom mold have been molded and fixed, and the glue injection holes are located directly below the glue injection head.

[0011] Furthermore, the insert includes a plurality of sub-inserts; the sub-inserts are arranged in one-to-one correspondence with the corner inserts to be processed, and the sub-inserts are assembled and fixed to each other to form the insert.

[0012] Furthermore, the overflow groove includes a first overflow groove and a second overflow groove; the first overflow groove is radially spaced along the outer circumference of the mold cover, and the second overflow groove is located at the center of the mold cover.

[0013] Furthermore, the hot plate is provided with a plurality of studs, the limiting member is movably inserted on the studs, and the outer side wall of the limiting member is an arc surface.

[0014] Furthermore, it comprises a plurality of guide posts and guide holes which are matched one by one, wherein the guide posts are arranged at intervals on the frame, and the guide holes are arranged at intervals on the mold cover.

[0015] Furthermore, the bottom mold includes a lower mold plate, and the insert and the frame are placed on the lower mold plate; a lower locking groove is provided along the outer circumference of the lower mold plate, and a plurality of first clamping blocks are provided at corresponding positions on the frame; the first clamping blocks are engaged with the lower locking groove.

[0016] Furthermore, the clamping angle of the lower clamping groove is 8° to 12°.

[0017] Furthermore, an upper locking mold groove is provided along the outer circumference of the mold cover, and a plurality of second clamping blocks are provided at corresponding positions on the frame; the second clamping blocks are engaged with the upper locking mold groove.

[0018] Furthermore, the locking angle of the upper locking groove is 12° to 15°.

[0019] In a second aspect, the technical solution provides a grinder corner liner, which is processed based on the mold for the grinder corner liner.

[0020] Beneficial effects:

[0021] The technical solution provides a mold for grinder corner linings, so as to improve both the appearance defects of corner lining products existing when corner linings are processed based on existing molds, and the technical defects that are easy to cause mold damage.

[0022] The mold includes, from bottom to top, a hot plate, a bottom mold and a mold cover. Among them, a plurality of limiters are provided on the hot plate. The bottom mold is placed on the hot plate, and the limiters are provided around the bottom mold to limit the position of the bottom mold; the bottom mold includes an insert and a frame, the insert corresponds to the shape and size of the corner lining to be processed, and the frame is adapted to be fixed on the insert. The mold cover is provided with a plurality of glue injection grooves, glue injection holes, a plurality of overflow grooves and a plurality of overflow holes; the glue injection holes are opened in the glue injection grooves, and the overflow holes are opened in the overflow grooves; wherein, before filling with glue, the mold cover and the bottom mold have been molded and fixed, and the glue injection holes are located directly below the glue injection head. It can be seen from this that the technical solution has been molded before filling with glue (that is, the mold after mold closing is an empty mold), and then the glue material is injected into the empty mold after mold closing from the set injection hole. At this time, since there is no need to close the mold after filling with glue, the overflow of glue caused by the corresponding processing method is avoided, which in turn leads to shape defects of the corner lining; it also avoids the reduction of the service life of the mold due to deformation due to internal pressure.

[0023] At the same time, an overflow hole is also provided to confirm that the glue material has been filled, thereby avoiding structural defects of the corner lining caused by insufficient glue material when using this type of mold. Furthermore, since a limiter is provided on the hot plate to ensure that the glue injection head can be aligned with the glue injection hole during glue injection, and the glue injection hole is provided in the glue injection groove, the adverse effects caused by the overflow of glue material during the glue injection process are avoided. Therefore, new structural defects that may be caused to the corner lining when using the mold of the technical solution are also avoided.

[0024] It should be appreciated that all combinations of the foregoing concepts, as well as additional concepts described in greater detail below, may be considered part of the inventive subject matter of the present disclosure, provided such concepts are not mutually inconsistent.

[0025] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a schematic structural diagram of the mold for the corner lining of the grinding machine after the mold is closed;

[0028] Figure 2 It is a structural schematic diagram of the bottom mold in the mold for the corner lining of the grinding machine;

[0029] Figure 3 It is a schematic diagram of the structure of the hot plate in the mold for the corner lining of the grinder.

[0030] The reference numerals in the figure are: 1 is a mold cover, 2 is a bottom mold, 3 is a hot plate; 11 is a glue injection groove, 12 is a glue injection hole, 13 is an overflow groove, 14 is an overflow hole, 15 is a guide hole, 16 is a first hook; 21 is an insert, 22 is a frame, 23 is a guide column, 24 is a lower mold plate, 25 is a second hook; 31 is a stud, and 32 is a limit piece. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Unless otherwise defined, the technical terms or scientific terms used herein should be the common meanings understood by people with general skills in the field to which the utility model belongs.

[0032] The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular form of "a", "an" or "the" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprise" include the features, wholes, steps, operations, elements and / or components listed after "include" or "comprise", and do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] In the prior art, most molds for processing corner linings are semi-open pressed structures. When this type of mold is used for processing corner linings, since the same mass of rubber has a slightly larger volume after vulcanization than before vulcanization, the height of the rubber material during filling is generally slightly higher than the height of the structure corresponding to the corner lining in the bottom mold. On the one hand, this leads to the defect of gnawing the mold when the upper mold and the bottom mold are closed, which causes damage to the mold and affects the service life. On the other hand, it may also cause a large pressure inside the bottom mold when the upper mold and the bottom mold are closed, causing the rubber material to overflow, so that the final corner lining product has appearance defects. Based on this, the present embodiment aims to provide a mold for grinder corner linings to improve the above two technical defects at the same time.

[0034] The mold for the corner lining of a grinder disclosed in the present utility model will be further specifically introduced below in conjunction with the embodiments shown in the accompanying drawings.

[0035] like Figure 1-3 As shown, the mold includes, from bottom to top, a hot plate 3, a bottom mold 2 and a mold cover 1. The hot plate 3 is equipped with a heating wire to heat during the glue filling process (the heating temperature is about 100°C), thereby reducing the vulcanization time after the glue filling. Specifically, a plurality of limiters 32 are also provided on the hot plate 3. The bottom mold 2 is placed on the hot plate; at this time, the limiters 32 are arranged around the bottom mold 2 to limit the position of the bottom mold 2.

[0036] The bottom mold 2 includes an insert 21 and a frame 22. The insert 21 corresponds to the shape and size of the corner lining to be processed, and the frame 22 is adapted to be fixed on the insert 21.

[0037] The mold cover 1 is provided with a plurality of glue injection grooves 11, a plurality of glue injection holes 12, a plurality of overflow grooves 13 and a plurality of overflow holes 14. The glue injection holes 12 are provided in the glue injection grooves 11, and the overflow holes 14 are provided in the overflow grooves 13. Wherein, the mold cover 1 and the bottom mold 2 have been molded and fixed before the glue is filled, and the glue injection holes 12 are located directly below the glue injection head. Specifically, a glue injection hole 12 is provided in each glue injection groove 11. In order to allow the glue material to flow evenly into the mold after the mold is closed, the glue injection holes 12 are arranged evenly spaced along the inner circumference of the mold cover 1. Specifically, there are four glue injection holes 12 in total in this embodiment.

[0038] In specific implementation, since the mold has been closed before filling with glue (i.e., the mold is empty after closing), the glue material needs to be injected into the empty mold after closing through the provided injection hole 12. At this time, since it is not necessary to close the mold after filling with glue, the overflow of glue material caused by the corresponding processing method is avoided, thereby avoiding the appearance defects of the corner lining caused by the deformation of the mold due to internal pressure and thus avoiding the reduction of the service life.

[0039] At the same time, in this embodiment, an overflow hole 14 is also provided to confirm that the glue material has been filled, thereby avoiding structural defects of the corner lining caused by insufficient glue material when using this type of mold. Furthermore, since a stopper 32 is provided on the hot plate 3 to ensure that the glue injection head can be aligned with the glue injection hole 12 during glue injection, and the glue injection hole 12 is provided in the glue injection groove 11, the adverse effects caused by the overflow of glue material during the glue injection process are avoided. Therefore, new structural defects that may be caused to the corner lining when using the mold of this embodiment are also avoided.

[0040] Since there are many types of corner linings to be processed, in order to reduce the number of mold designs, the insert 21 directly related to the corner lining structure is provided to include a plurality of sub-inserts. The sub-inserts are provided one by one in correspondence with the corner linings to be processed, and the sub-inserts are assembled and fixed to each other to form the insert. At this time, when different types of corner linings need to be processed at the same time, only the corresponding sub-inserts need to be replaced.

[0041] In order to facilitate the rapid discharge of the overflowing plastic material, thereby avoiding the accumulation in the mold and causing excessive pressure in the mold, the overflow groove 13 is provided to include a first overflow groove and a second overflow groove. The first overflow groove is arranged radially and spaced along the outer circumference of the mold cover, and the second overflow groove is located at the center of the mold cover. Furthermore, in order to facilitate the direct discharge of the overflowing plastic material when it is excessive, and avoid accumulation on the mold cover; the end of the first overflow groove located at the outer circumference of the mold cover 1 is set to be an open structure, and both ends of the second overflow groove are located at the outer circumference of the mold cover 1 and are open structures.

[0042] During the processing, in order to move the mold accordingly with the movement of the injection head position to successfully complete the injection molding process, a plurality of studs 31 are provided on the hot plate 3, and the limiter 32 is movably inserted on the studs 31. At the same time, in order to facilitate the smooth placement of the mold into the area restricted by the limiter, the outer side wall of the limiter 32 is also set to be an arc surface. In this embodiment, the limiter 32 is specifically a limit frustum.

[0043] In order to increase the mold closing speed and accuracy of the mold cover 1 and the bottom mold 2 and avoid mold gnawing, the mold is provided with a plurality of one-to-one corresponding guide posts 23 and guide holes 15. Specifically, the guide posts 23 are arranged at intervals on the frame 22, and the guide holes 15 are arranged at intervals on the mold cover 1.

[0044] As a specific implementation, the frame 22 in the bottom mold 2 is fixed in the following manner: the bottom mold 2 includes a lower mold plate 24, and the insert 21 and the frame 22 are placed on the lower mold plate 24. A lower clamping groove is provided along the outer circumference of the lower mold plate 24, and a plurality of first clamping blocks are provided at positions corresponding thereto on the frame 22; the first clamping blocks are engaged with the lower clamping groove. In a specific implementation, the clamping angle of the lower clamping groove is 8° to 12°. In this embodiment, the clamping angle of the lower clamping groove is 10°.

[0045] At the same time, the bottom mold 2 and the mold cover 1 are fixed in the following manner: an upper locking mold groove is provided along the outer circumference of the mold cover 1, and a plurality of second clamping blocks are provided at corresponding positions on the frame 22; the second clamping blocks are engaged with the upper locking mold groove. In a specific implementation, the locking angle of the upper locking mold groove is 12° to 15°. In this embodiment, the locking angle of the upper locking mold groove is 10°.

[0046] In order to facilitate the movement of the mold parts during mold closing and demolding, a first hook 16 is welded to the outer periphery of the mold cover 1 , and a second hook 25 is welded to the outer periphery of the bottom mold 2 .

[0047] This embodiment also provides a grinder corner liner, which is processed based on the mold for the grinder corner liner; therefore, the corner liner has the technical advantages of complete appearance and structure, and no mold loss will be caused during the processing.

[0048] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A mold for a grinder corner lining, characterized in that: From bottom to top, it includes: hot plate, bottom mold and mold cover; The hot plate is provided with a plurality of limiters; The bottom mold is placed on the hot plate, and the limiting members are arranged around the bottom mold to limit the position of the bottom mold; the bottom mold includes an inlay and a frame, the inlay corresponds to the shape and size of the corner lining to be processed, and the frame is adapted to be fixed on the inlay; The mold cover is provided with a plurality of glue injection grooves, a plurality of glue injection holes, a plurality of overflow grooves and a plurality of overflow holes; the glue injection holes are opened in the glue injection grooves, and the overflow holes are opened in the overflow grooves; wherein, before glue filling, the mold cover and the bottom mold have been molded and fixed, and the glue injection holes are located directly below the glue injection head.

2. The mold for the corner lining of a grinder according to claim 1, characterized in that: The insert includes a plurality of sub-inserts; the sub-inserts are arranged one by one corresponding to the corner linings to be processed, and the sub-inserts are assembled and fixed to each other to form the insert.

3. The mold for the corner lining of a grinder according to claim 1, characterized in that: The overflow groove includes a first overflow groove and a second overflow groove; the first overflow groove is arranged radially and spaced along the outer circumference of the mold cover, and the second overflow groove is located at the center of the mold cover.

4. The mold for the corner lining of a grinder according to claim 1, characterized in that: The hot plate is provided with a plurality of studs, the limiting member is movably inserted on the studs, and the outer side wall of the limiting member is an arc surface.

5. The mold for grinder corner lining according to claim 1, characterized in that: It comprises a plurality of guide posts and guide holes which are matched one by one. The guide posts are arranged on the frame at intervals, and the guide holes are arranged on the mold cover at intervals.

6. The mold for the corner lining of a grinder according to claim 1, characterized in that: The bottom mold includes a lower mold plate, and the insert and the frame are placed on the lower mold plate; a lower locking mold groove is provided along the outer circumference of the lower mold plate, and a plurality of first clamping blocks are provided at corresponding positions on the frame; the first clamping blocks are engaged with the lower locking mold groove.

7. The mold for the corner lining of a grinder according to claim 6, characterized in that: The clamping angle of the lower clamping groove is 8° to 12°.

8. The mold for the corner lining of a grinder according to claim 1, characterized in that: An upper locking mold groove is arranged along the outer circumference of the mold cover, and a plurality of second clamping blocks are arranged at corresponding positions on the frame; the second clamping blocks are engaged with the upper locking mold groove.

9. The mold for the corner lining of a grinder according to claim 8, characterized in that: The locking angle of the upper locking groove is 12° to 15°.

10. A grinding machine angle lining, characterized in that: The mold for the corner lining of a grinder is processed based on any one of claims 1 to 9.

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