Preheating device with metal insert on sand core

Abstract

The utility model provides a preheating device with a metal insert on a sand core, which is characterized in that insert heating holes are formed in the top end of a heating plate at equal intervals in an array manner, and combined insert sand cores to be heated are arranged in the insert heating holes in a penetrating manner; the plate heating holes are formed in the front side and the rear side of the heating plate at equal intervals. The plate heating module is arranged in the plate heating hole in a penetrating manner; the supporting legs are connected to the periphery of the bottom end of the heating plate through bolts. The monitoring module is arranged in the center of the left side or the right side of the heating plate in a penetrating mode, the sand core and the steel insert are manufactured into an integral combined insert sand core, the combined insert sand core can be clamped into the insert heating hole in the casting process, accurate preheating of the steel insert is achieved through the heating plate, defects caused by thermal stress are effectively reduced, and the casting quality is guaranteed. The device is simple in structure, convenient to operate and suitable for being widely applied to the online casting production process.

Description

Technical Field

[0001] The utility model relates to the field of casting technology, in particular to the field of preheating when steel inserts need to be cast in aluminum alloy parts and the inserts need to be preheated to a temperature required by the process. Specifically, the utility model provides a sand core with a metal insert preheating device. Background Art

[0002] Aluminum alloy products are currently widely used in various fields. Aluminum alloy products are widely used in various high-stress or high-load application scenarios due to their excellent strength and rigidity. However, in some special applications, aluminum alloy alone may not provide sufficient structural strength. Therefore, it is usually necessary to embed steel metal inserts in the aluminum alloy to significantly improve the strength and durability of the overall structure. Therefore, combined insert sand cores are usually used in casting. Steel metal inserts need to be embedded in the outer sleeve of the traditional sand core structure.

[0003] During the casting process of aluminum alloy parts, steel metal inserts need to be preheated to a certain temperature to reduce thermal stress caused by temperature differences, thereby avoiding cracks or poor bonding between the insert and the casting. The existing technology lacks an efficient and reliable metal insert preheating device that can meet the insert preheating requirements during online casting production. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a preheating device with a metal insert on a sand core to solve the difficulties of the prior art.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a preheating device with a metal insert on a sand core, comprising:

[0006] A heating plate 1, wherein the top of the heating plate 1 is provided with an array of insert heating holes 11 at equal intervals, and the insert heating holes 11 are penetrated by a composite insert sand core 2 to be heated;

[0007] Plate heating holes 12, the plate heating holes 12 are opened at equal intervals on the front and rear sides of the heating plate 1, and each plate heating hole 12 is arranged between two adjacent rows of insert heating holes 11;

[0008] A plate heating module 3, wherein the plate heating module 3 is inserted into the plate heating hole 12;

[0009] Support legs 5, which are connected by bolts and arranged around the bottom end of the heating plate 1;

[0010] The monitoring module 4 is disposed in the middle of the left side or the right side of the heating plate 1 .

[0011] According to a preferred solution, the insert heating hole 11 and the plate heating hole 12 are not connected.

[0012] According to the preferred embodiment, the insert heating hole 11 is divided into a top and a bottom, the inner diameter of the top insert heating hole 11 is larger than the aperture of the bottom insert heating hole 11, and a material clamping step 13 is formed between the top and bottom of the insert heating hole 11.

[0013] According to the preferred solution, the insert heating hole 11 heats the combined insert sand core 2 through heat conduction, and the clamping step 13 can limit the combined insert sand core 2 while increasing the contact area between the two.

[0014] According to the preferred embodiment, the combined insert sand core 2 includes: a sand core 21 and a steel insert 22, the steel insert 22 is sleeved on the bottom of the sand core 21, the outer wall of the steel insert 22 is in contact with the top hole wall of the insert heating hole 11, and the bottom end of the steel insert 22 is in contact with the material clamping step 13.

[0015] According to a preferred embodiment, the plate heating module 3 comprises:

[0016] The heating tube 31 is centrally disposed in the plate heating hole 12, and the front and rear sides of the heating tube 31 extend straight outward through the plate heating hole 12;

[0017] The heating tube locking ring 32 is sleeved on the front side or right side of the heating tube 31 through an interference fit. Connecting bolts 33 are inserted on the left and right sides of the heating tube locking ring 32. The bottom of the connecting bolts 33 passes through the heating tube locking ring 32 and is connected to the heating plate 1;

[0018] The heating tube protection cover 34 is arranged on a side of the heating plate 1 away from the heating tube locking ring 32 through bolt connection.

[0019] According to the preferred embodiment, the heating tube locking ring 32 fixes the heating tube in a proper position to prevent it from shifting during the heating process, thereby ensuring that the insert is heated evenly.

[0020] According to the preferred embodiment, several transfer threaded holes 61 are provided on the left and right sides of the heating plate 1. The several transfer threaded holes 61 are respectively provided on one side of the heating plate 1 close to the top corner. A transfer handle 6 is passed through the transfer threaded hole 61 through a threaded connection.

[0021] According to the preferred solution, the monitoring module 4 includes:

[0022] The detection hole 41 is opened in the middle of the left side or the right side of the heating plate 1 , and the detection hole 41 is located between two adjacent transfer threaded holes 61 .

[0023] A K-type thermocouple 42 has one side passing through the detection hole 41 .

[0024] The utility model adopts a heating plate, an insert heating hole, a combined insert sand core, a plate heating module and a monitoring module to manufacture the sand core and the steel insert into an integral combined insert sand core. The combined insert sand core can be clamped into the insert heating hole during the casting process, and the steel insert can be accurately preheated by the heating plate, effectively reducing defects caused by thermal stress and ensuring the quality of the casting. The device has a simple structure and is easy to operate, and is suitable for wide application in online casting production processes.

[0025] The following will describe in more detail the best embodiments of the present invention in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the utility model;

[0027] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0028] Figure 3 Shown is an exploded view of the present invention;

[0029] Figure 4 Shown is an enlarged schematic diagram of the three-dimensional structure of the mounting bracket in the present invention;

[0030] Label Description

[0031] 1. Heating plate; 11. Insert heating hole; 12. Plate heating hole; 13. Material clamping step;

[0032] 2. Combined insert sand core; 21. Sand core; 22. Steel insert;

[0033] 3. Plate heating module; 31. Heating tube; 32. Heating tube locking ring; 33. Connecting bolt; 34. Heating tube protective cover;

[0034] 4. Monitoring module; 41. Detection hole; 42. K-type thermocouple;

[0035] 5. Support feet; 6. Transfer handle; 61. Transfer threaded hole; DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0038] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the specification and claims of the present utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "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.

[0039] The present invention proposes a preheating device with a metal insert on a sand core, which is used in the preheating process of the metal insert on the sand core. The present invention does not limit the type of the combined insert sand core 2, but the structure of the heating plate 1, the insert heating hole 11, the plate heating module 3 and the monitoring module 4 is particularly suitable for the process of preheating the steel insert 22 in the combined insert sand core 2.

[0040] In general, the sand core with metal insert preheating device proposed by the present invention mainly includes: heating plate 1, insert heating hole 11, plate heating module 3 and monitoring module 4. Figure 1 , which shows the arrangement relationship of the heating plate 1, the insert heating hole 11, the plate heating module 3 and the monitoring module 4.

[0041] When the sand core preheating device with metal inserts proposed in the present invention is used, it is only necessary to supply power to the heating tube 31 and observe and confirm that the heating plate 1 is heated to 300°C through the K-type thermocouple 42. Figure 1 As shown, the composite insert sand core 2 to be processed is clamped into the insert heating hole 11, so that the steel insert 22 fits the hole wall of the insert heating hole 11 and the clamping step, and is left to stand for at least 5 minutes. At this time, the steel insert 22 can be preheated to 200-300°C and then placed in the mold for casting. The utility model manufactures the sand core 21 and the steel insert 22 as a whole, and can accurately preheat the steel insert 22 through the heating plate 1 during the casting process, effectively reducing defects caused by thermal stress and ensuring the quality of the casting. The device has a simple structure and is easy to operate, and is suitable for wide application in online casting production processes.

[0042] The top of the heating plate 1 is provided with an array of evenly spaced insert heating holes 11, which are divided into a top and a bottom. The inner diameter of the top insert heating hole 11 is larger than the aperture of the bottom insert heating hole 11. There is a material clamping step 13 between the top and the bottom of the insert heating hole 11. Plate heating holes 12 are provided on the front and back sides of the heating plate 1. The heating plate 1 is used to provide a uniform heat source, and heats the insert to the required temperature by contacting with the insert.

[0043] The above-mentioned combined insert sand core 2 is inserted into the insert heating hole 11, and the combined insert sand core 2 includes: a sand core 21 and a steel insert 22, wherein the steel insert 22 is sleeved on the bottom of the sand core 21, the outer wall of the steel insert 22 is in contact with the top hole wall of the insert heating hole 11, and the bottom end of the steel insert 22 is in contact with the material clamping step 13.

[0044] The above-mentioned plate heating module 3 is arranged in the plate heating hole 12, and the plate heating module 3 includes: a heating tube 31, a heating tube locking ring 32 and a heating tube protective cover 34, wherein the heating tube 31 is arranged in the middle of the plate heating hole 12, and the front and rear sides of the heating tube 31 extend straight outward through the plate heating hole 12. The heating tube 31 is embedded and provides heat to the insert by electric heating to ensure uniform temperature distribution. The heating tube locking ring 32 is sleeved on the front or right side of the heating tube 31 through an interference fit, and connecting bolts 33 are passed through the left and right sides of the heating tube locking ring 32. The bottom of the connecting bolt 33 passes through the heating tube locking ring 32 and is connected to the heating plate 1. The heating tube locking ring 32 fixes the heating tube in an appropriate position to prevent it from shifting during the heating process, ensuring that the insert is heated evenly. A heating tube protective cover 34 is provided on the side of the heating plate 1 away from the heating tube locking ring 32 by bolt connection. The heating tube protective cover 34 protects the heating tube from external damage and isolates excess heat to prevent accidental burns or heat loss.

[0045] The above-mentioned monitoring module 4 is arranged in the middle of the left side or right side of the heating plate 1. The monitoring module 4 includes: a detection hole 41 and a K-type thermocouple 42, wherein the detection hole 41 is opened in the middle of the left side or right side of the heating plate 1, and the detection hole 41 is located between two adjacent transfer threaded holes 61. One side of the K-type thermocouple 42 is arranged in the detection hole 41. The K-type thermocouple 42 is used to monitor the temperature of the insert in real time to ensure that the temperature meets the process requirements and avoid overheating or underheating.

[0046] Several transfer threaded holes 61 are provided on the left and right sides of the above-mentioned heating plate 1. The several transfer threaded holes 61 are respectively provided on one side of the heating plate 1 close to the top corner. A transfer handle 6 is passed through the transfer threaded hole 61 through a threaded connection. The transfer handle 6 can lift and move the entire device when the heating plate 1 is at room temperature.

[0047] The supporting legs 5 are arranged around the bottom end of the heating plate 1 by bolt connection, which ensures the stability of the device and ensures the fixation and safe operation on the casting production line.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A sand core with a metal insert preheating device, characterized in that: include: A heating plate (1), wherein the top of the heating plate (1) is provided with an array of insert heating holes (11) at equal intervals, and a combined insert sand core (2) to be heated is passed through the insert heating holes (11); Plate heating holes (12), the plate heating holes (12) are arranged at equal intervals on the front and rear sides of the heating plate (1), and each of the plate heating holes (12) is arranged between two adjacent rows of insert heating holes (11); A plate heating module (3), wherein the plate heating module (3) is inserted into the plate heating hole (12); Support legs (5), the support legs (5) being arranged around the bottom end of the heating plate (1) via bolt connections; A monitoring module (4) is provided in the middle of the left side or the right side of the heating plate (1).

2. The sand core according to claim 1 is provided with a metal insert preheating device, characterized in that: The insert heating hole (11) is divided into a top and a bottom, the inner diameter of the top insert heating hole (11) is larger than the diameter of the bottom insert heating hole (11), and a material clamping step (13) is formed between the top and the bottom of the insert heating hole (11).

3. The sand core with a metal insert preheating device according to claim 2, characterized in that: The combined insert sand core (2) comprises: a sand core (21) and a steel insert (22), wherein the steel insert (22) is sleeved on the bottom of the sand core (21), the outer wall of the steel insert (22) is in contact with the top wall of the insert heating hole (11), and the bottom end of the steel insert (22) is in contact with the material clamping step (13).

4. The sand core according to claim 3 is provided with a metal insert preheating device, characterized in that: The plate heating module (3) comprises: A heating tube (31), wherein the heating tube (31) is centrally disposed in the plate heating hole (12), and the front and rear sides of the heating tube (31) pass through the plate heating hole (12) and extend straight outward; A heating tube locking ring (32), wherein the heating tube locking ring (32) is sleeved on the front side or right side of the heating tube (31) through an interference fit, and connecting bolts (33) are passed through the left and right sides of the heating tube locking ring (32), and the bottom of the connecting bolts (33) passes through the heating tube locking ring (32) and is connected to the heating plate (1); A heating tube protection cover (34) is provided on a side of the heating plate (1) away from the heating tube locking ring (32) through a bolt connection.

5. The sand core with a metal insert preheating device according to claim 4, characterized in that: A plurality of transfer threaded holes (61) are provided on the left and right sides of the heating plate (1), and the plurality of transfer threaded holes (61) are respectively provided on one side of the heating plate (1) close to the top corner, and a transfer handle (6) is inserted into the transfer threaded hole (61) through a threaded fitting connection.

6. The sand core with a metal insert preheating device according to claim 5, characterized in that: The monitoring module (4) comprises: A detection hole (41), the detection hole (41) is opened in the middle of the left side or the right side of the heating plate (1), and the detection hole (41) is located between two adjacent transfer threaded holes (61); A K-type thermocouple (42), one side of which is inserted into the detection hole (41).

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