Burr removing device and core manufacturing tool

Abstract

The utility model relates to a burr removing device and a core making tool in the technical field of sand mold casting, the core making tool comprises a movable mold and a static mold, the movable mold comprises a first pouring gate block and a second pouring gate block, the static mold comprises a third pouring gate block, and the first pouring gate block, the second pouring gate block and the third pouring gate block are sequentially arranged; the burr removing device comprises a guide part which is coaxially connected with a first pouring gate block and a second pouring gate block, and the second pouring gate block can move on the guide part relative to the first pouring gate block; the driving piece is arranged between the first pouring gate block and the second pouring gate block; and after the movable mold and the static mold are closed, the driving piece can drive the second pouring gate block to be in contact with the third pouring gate block. According to the burr removing device, the burrs in the built-in cross gate core manufacturing process can be automatically removed, the working efficiency is improved, the labor intensity of workers is reduced, the consistency of sand cores is guaranteed, and a solid technological tool design foundation is provided for large-scale design and use of the built-in cross gate sand cores.

Description

Technical Field

[0001] The present application relates to the technical field of sand casting, and in particular to a burr removal device and a core making tool. Background Art

[0002] After the core making is completed in the existing core making tool, the runner wrapped inside the sand core is invisible to the naked eye because the runner in the pouring system is designed as a built-in type. Figure 1 As shown, the core making tooling includes a movable mold 100 and a static mold 101. The movable mold 100 and the static mold 101 of the core making tooling are molded together under the drive of the core making equipment, that is, the movable mold 100 and the static mold 101 are close to each other. After the mold closing action is in place, a series of actions such as sand shooting, amine blowing and curing, mold opening, and core pushing are performed. After the qualified sand core is punched out, the subsequent process is performed. However, the core making tooling is very easy to cause burrs on the sand core at the parting surface 8 due to loose mold closing. The burrs will enter the casting with the metal liquid during the pouring process and form sand eye defects, which will cause the casting to be scrapped. At present, the sand core is often opened manually, and the burrs are removed and blown clean with professional tools before the core can be assembled. This is not only inefficient and labor-intensive, but also difficult to ensure the consistency of the sand core. Utility Model Content

[0003] In view of the problems existing in the background technology, the present application provides a burr removal device and a core making tool. The burr removal device can realize the automatic removal of burrs in the process of built-in cross runner core making, improve work efficiency, reduce the labor intensity of workers, and ensure the consistency of sand cores.

[0004] According to one aspect of the utility model, a burr removal device is provided, comprising: a guide member, coaxially connecting the first runner block and the second runner block, the second runner block being able to move axially along the first runner block relative to the first runner block on the guide member; a driving member, disposed between the first runner block and the second runner block; after the movable mold and the static mold are closed, the driving member can drive the second runner block to maintain contact with the third runner block.

[0005] In some embodiments of the present invention, the guide member includes: a guide rod coaxially passing through the first runner block and the second runner block, and the second runner block can slide relative to the guide rod.

[0006] In some embodiments of the present invention, the guide member further includes: a limiting block, which is disposed on a side of the second runner block away from the first runner block and is coaxially connected to the guide rod.

[0007] In some embodiments of the present invention, a receiving cavity adapted to the limiting block is formed on a side of the third runner block facing the second runner block.

[0008] In some embodiments of the present invention, the limit block is in a truncated cone shape, and the lower bottom surface of the truncated cone is connected to the guide rod.

[0009] In some embodiments of the utility model, the guide member also includes: a guide cylinder, which is sleeved outside the guide rod and coaxially connected to the side of the first runner block facing the second runner block; a guide groove adapted to the guide cylinder is opened on the side of the second runner block facing the first runner block.

[0010] In some embodiments of the present invention, the driving member includes: at least one elastic member, at least one installation chamber is opened between the first runner block and the second runner block, the end of the installation chamber away from the first runner block forms a first support surface, and the end of the installation chamber away from the second runner block forms a second support surface, the elastic member is assembled in the installation chamber, and the two ends of the elastic member are elastically supported on the first support surface and the second support surface respectively.

[0011] In some embodiments of the present invention, the elastic member is a spring.

[0012] In some embodiments of the present invention, the spring is coaxially arranged with the first runner block and the second runner block.

[0013] According to another aspect of the utility model, a core making tool is provided, comprising the above-mentioned burr removing device.

[0014] Compared with the prior art, the utility model achieves the following technical effects:

[0015] 1. It reduces the steps of manual sand core splitting, burr removal, and blowing, improves work efficiency, reduces labor intensity, improves the working environment, and ensures the consistency of the sand core.

[0016] 2. The burr removal device completely relies on the spring as the power source to output power, which is environmentally friendly, simple and durable.

[0017] 3. The burr removal device does not need to be connected to a separate cylinder, motor or other equipment, and the replacement and maintenance costs are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of an existing core making tool;

[0020] Figure 2 It is a schematic diagram of the assembly of the burr removal device and the core making tooling according to the embodiment of the present application;

[0021] Figure 3 It is a schematic diagram of the structure of the movable mold before mold closing.

[0022] The reference numerals in the accompanying drawings represent the following:

[0023] 100, dynamic mold; 101, static mold;

[0024] 200, first runner block; 201, second runner block; 202, third runner block; 203, static mold runner bolt;

[0025] 1. Guide rod; 2. Limit block; 3. Accommodating cavity; 4. Guide cylinder; 5. Guide groove; 6. Installation chamber; 7. Spring; 8. Parting surface. DETAILED DESCRIPTION

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0028] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0029] The burr removal device and core making tooling provided in the embodiments of the present application are described below in conjunction with the accompanying drawings.

[0030] The present application embodiment discloses a burr removal device, which is arranged on a core making tool. Figure 2As shown, the core making tooling includes a movable mold and a static mold. The movable mold includes a first runner block 200 and a second runner block 201, and the static mold includes a third runner block 202. The first runner block 200, the second runner block 201 and the third runner block 202 are arranged in sequence.

[0031] like Figure 2 and Figure 3 As shown, the burr removal device includes a guide member and a driving member; wherein the guide member coaxially connects the first runner block 200 and the second runner block 201, and the second runner block 201 can move axially along the first runner block 200 relative to the first runner block 200 on the guide member; the driving member is arranged between the first runner block 200 and the second runner block 201; after the movable mold and the static mold are closed, the driving member can drive the second runner block 201 to maintain contact with the third runner block 202.

[0032] By using the burr removal device in the technical solution, after the static mold and the dynamic mold are closed, under the guiding action of the guide member, the driving member drives the second runner block 201 to move toward the third runner block 202, so that the second runner block 201 and the third runner block 202 are closely matched, so that there is always no gap between the parting surface 8 of the static mold and the dynamic mold, thereby avoiding the burr phenomenon on the parting surface 8 of the sand core caused by the loose closing of the static mold and the dynamic mold.

[0033] Furthermore, since the second runner block 201 is pressed against the third runner block 202, a gap may be generated between the first runner block 200 and the second runner block 201, causing burrs to appear on the sand core at the gap. However, during the core pushing process, the movable mold moves away from the static mold, and during the separation of the sand core from the second runner block 201, the burrs at the gap will be automatically removed due to the obstruction of the second runner block 201, thereby avoiding burrs remaining on the inner wall of the sand core at the gap. After the sand core falls off, the movable mold and the static mold continue to close the mold and repeat the cycle to carry out sand core production.

[0034] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the guide member includes a guide rod 1, which coaxially passes through the first runner block 200 and the second runner block 201, and the second runner block 201 can slide relative to the guide rod 1. The guide rod 1 limits the second runner block 201 in the radial direction, so that the second runner block 201 can stably move axially under the action of the driving member, and the second runner block 201 can be stably and accurately connected with the third runner block 202.

[0035] Specifically, the guide rod 1 in this embodiment includes but is not limited to a round rod, a prism, an elliptical rod, etc., and a round rod is preferably used.

[0036] Furthermore, when the guide rod 1 is a round rod, an external thread is provided on the side of the circumference of the guide rod 1 away from the second runner block 201, and the guide rod 1 is threadedly connected to the first runner block 200 through the external thread, and the first runner block 200 can also be connected to the core making equipment through the external thread.

[0037] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the guide member also includes a limit block 2, which is arranged on the side of the second runner block 201 away from the first runner block 200 and is coaxially connected to the guide rod 1. The limit block 2 has a blocking and limiting function on the second runner block 201.

[0038] When the static mold and the movable mold are separated, the second runner block 201 will continue to move away from the first runner block 200 under the action of the driving member until the second runner block 201 abuts against the limit block 2. The limit block 2 blocks the second runner block 201, thereby preventing the second runner from sliding too far or even falling out of the guide rod 1, thereby facilitating the next core making cycle.

[0039] Furthermore, a receiving cavity 3 adapted to the stopper block 2 is provided on one side of the third runner block 202 facing the second runner block 201. The stopper block 2 is received in the receiving cavity 3, so that the stopper block 2 is prevented from affecting the contact between the second runner block 201 and the third runner block 202 during mold closing, and stable contact between the second runner block 201 and the third runner block 202 can be ensured.

[0040] In other embodiments, the accommodating cavity 3 may also be provided on the side of the second runner block 201 facing the third runner block 202 , or a groove may be provided on each contact surface of the second runner block 201 and the third runner block 202 to form the accommodating cavity 3 .

[0041] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the limit block 2 is in the shape of a truncated cone, and the lower bottom surface of the truncated cone is connected to the guide rod 1.

[0042] It can be understood that the upper bottom surface of the truncated cone faces the bottom of the accommodating cavity 3, and the accommodating cavity 3 forms an inclined surface adapted to the side surface of the truncated cone.

[0043] During the closing process of the movable mold and the static mold, the truncated cone-shaped limit block 2 is easier to insert into the accommodating cavity 3, thereby improving the matching efficiency and playing a guiding role in the matching between the movable mold and the static mold. After the truncated cone side is completely fitted with the inclined surface of the accommodating cavity 3, the second runner block 201 and the third runner block 202 are completely aligned, thereby avoiding the risk of tooling misalignment.

[0044] In some embodiments of the present invention, Figure 2 and Figure 3As shown, the guide member also includes a guide cylinder 4, which is sleeved outside the guide rod 1 and coaxially connected to the side of the first runner block 200 facing the second runner block 201; the side of the second runner block 201 facing the first runner block 200 is provided with a guide groove 5 adapted to the guide cylinder 4.

[0045] It can be understood that the maximum distance that the second runner block 201 moves relative to the first runner block 200 is less than the length of the guide tube 4, and the guide sleeve cooperates with the guide rod 1 to further limit the radial direction of the second runner block 201, which can improve the alignment accuracy of the two ends of the second runner block 201 with the first runner block 200 and the third runner block 202.

[0046] In other embodiments, the guide cylinder 4 may also be coaxially connected to the side of the second runner block 201 facing the first runner block 200 , and a guide groove 5 adapted to the guide cylinder 4 is provided on the side of the first runner block 200 facing the second runner block 201 .

[0047] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, at least one installation chamber 6 is opened between the first runner block 200 and the second runner block 201, and the end of the installation chamber 6 away from the first runner block 200 forms a first supporting surface, and the end of the installation chamber 6 away from the second runner block 201 forms a second supporting surface. The first supporting surface is located on the second runner block 201, and the second supporting surface is located on the first runner block 200.

[0048] The driving member includes at least one elastic member, which is assembled in the installation chamber 6, and the two ends of the elastic member are elastically supported on the first support surface and the second support surface respectively. During the mold closing process, the second runner block 201 compresses the elastic member under the pressure of the core making equipment, and under the elastic force of the elastic member, the second runner block 201 and the third runner block 202 are always closely matched, so that the parting surface 8 is always free of gap.

[0049] Specifically, in the present embodiment, an installation chamber 6 is opened between the first runner block 200 and the second runner block 201, the installation chamber 6 is coaxial with the first runner block 200 and the second runner block 201, most of the installation chamber 6 is opened on the first runner block 200, and a small part is opened on the second runner block 201, the guide rod 1 passes through the installation chamber 6, and the diameter of the installation chamber 6 is larger than the diameter of the guide rod 1.

[0050] Furthermore, a small portion of the installation chamber 6 opened on the second runner block 201 is communicated with the guide groove 5 .

[0051] Specifically, the elastic member in this embodiment is a spring 7; in other embodiments, the elastic member may also be an elastic block made of elastic materials such as rubber, silicone, etc.

[0052] Furthermore, the spring 7 is coaxially arranged with the first runner block 200 and the second runner block 201, that is, the spring 7 is located in the installation chamber 6 and is sleeved on the guide rod 1, one end of the spring 7 abuts against the first support surface, and the other end abuts against the second support surface. The second runner block 201 and the third runner block 202 are tightly attached by the elastic force of the spring 7, and the guide rod 1 can guide the spring 7.

[0053] Another embodiment of the utility model provides a core making tool, which includes a movable mold, a static mold and the burr removal device in any of the above-mentioned embodiments; the movable mold includes a first runner block 200 and a second runner block 201, and the static mold includes a third runner block 202. The first runner block 200, the second runner block 201 and the third runner block 202 are arranged in sequence, and the third runner block 202 is connected to the core making equipment through the static mold runner bolt 203.

[0054] The core-making tooling of this embodiment has all the technical effects of the burr removal device of this embodiment, and the specific structure and technical effects of the core-making tooling are not described in detail here. It should be noted that this embodiment only describes in detail the key technical features related to this case, and as for the technical features not related to this case, this embodiment only makes a simple illustration and a simple description. For example, this embodiment only briefly describes the core-making tooling, and the specific structure of the core-making tooling is not described in detail here.

[0055] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A burr removal device, provided on a core making tool, wherein the core making tool comprises a movable die and a static die, It is characterized in that The movable mold includes a first runner block and a second runner block, and the static mold includes a third runner block, and the first runner block, the second runner block and the third runner block are arranged in sequence; The burr elimination device comprises: A guide member coaxially connecting the first runner block and the second runner block, wherein the second runner block can move axially along the first runner block relative to the first runner block on the guide member; A driving member is disposed between the first runner block and the second runner block; after the movable mold and the static mold are closed, the driving member can drive the second runner block to maintain contact with the third runner block.

2. The burr removal device according to claim 1, It is characterized in that The guide member comprises: A guide rod coaxially passes through the first runner block and the second runner block, and the second runner block can slide relative to the guide rod.

3. The burr removal device according to claim 2, It is characterized in that The guide member also includes: The limiting block is arranged on a side of the second runner block away from the first runner block and is coaxially connected to the guide rod.

4. The burr removal device according to claim 3, It is characterized in that A receiving cavity adapted to the limiting block is formed on a side of the third runner block facing the second runner block.

5. The burr removal device according to claim 4, It is characterized in that The limiting block is in a truncated cone shape, and the lower bottom surface of the truncated cone is connected to the guide rod.

6. The burr removal device according to claim 2, It is characterized in that The guide member also includes: A guide cylinder is sleeved outside the guide rod and is coaxially connected to the side of the first runner block facing the second runner block; a guide groove adapted to the guide cylinder is provided on the side of the second runner block facing the first runner block.

7. The burr removal device according to any one of claims 1 to 6, It is characterized in that The driving member comprises: At least one elastic member, at least one installation chamber is opened between the first runner block and the second runner block, the end of the installation chamber away from the first runner block forms a first supporting surface, the end of the installation chamber away from the second runner block forms a second supporting surface, the elastic member is assembled in the installation chamber, and the two ends of the elastic member are elastically supported on the first supporting surface and the second supporting surface respectively.

8. The burr removal device according to claim 7, It is characterized in that The elastic member is a spring.

9. The burr removal device according to claim 8, It is characterized in that The spring is coaxially arranged with the first runner block and the second runner block.

10. A core making tool, It is characterized in that The invention comprises a burr removing device as claimed in any one of claims 1 to 9.

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