Press fitting tool for inner core of double-tongue product
By using press-fit tooling to position the main and auxiliary eddy current area in the cast sand core production of double tongue products, the problem of unstable inner core positioning is solved, the dimensional stability of the eddy current area and product surface quality are improved, and the scrap rate and quality cost are reduced.
Patent Information
- Application Number
- CN202421451616.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-24
AI Technical Summary
In the production process of cast sand cores for double tongue products, the inner core of the vortex area is difficult to form integrally due to the complex structure. It needs to be split into two small inner cores and bonded with glue, resulting in unstable positioning, easy to be misaligned or offset, affecting the dimensional stability of the vortex area and product surface quality.
A press-fit tooling including a positioning assembly and a press head is adopted to mainly locate the vortex area through the press head and the limiting column, and auxiliary positioning of the core head part is combined with the limit seat to ensure the stable and fixed position of the inner core and prevent misalignment or offset.
It effectively ensures the dimensional stability of the eddy current area, avoids obvious sand core parting lines on the finished product surface, and reduces product waste rate and quality cost losses.
Smart Images
Figure CN222831105U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of casting sand core tooling, and in particular relates to a press-fitting tooling for the inner core of a double-tongue product. Background Art
[0002] During the production process of casting sand cores of double-tongue products, since the vortex area of the double-tongue products is a double-tongue structure with a complex structure, the inner core forming the vortex area cannot be formed in one piece. During the production process of casting sand cores, the inner core needs to be split into two small inner cores, and the two small inner cores are bonded together by gluing the mating surfaces of the two small inner cores respectively. Since the production precision of the vortex area has a great influence on the performance of the finished product, higher requirements are placed on the dimensional stability and appearance quality of the vortex area.
[0003] However, in the current casting sand core manufacturing process, since the inner core of the eddy current area is made of two small inner cores bonded together with glue, and this step often does not use a press-fit tool for precise fixation, it mostly relies on manual operation. This results in the two small inner cores being not positioned firmly after bonding, and are prone to misalignment or offset during the production process, which in turn affects the dimensional stability of the eddy current area.
[0004] At the same time, when the two small inner cores are misaligned or offset, an obvious sand core parting line will usually appear on the surface of the finished product, which seriously reduces the surface quality of the product and has a negative impact on the stability of the overall product quality. Summary of the invention
[0005] The utility model aims to solve the problems existing in the prior art and provides a press-fitting tool for the inner core of a double-tongue product.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] A press-fitting tool for the inner core of a double-tongue product, including a press-fitting tool for clamping the inner core, the press-fitting tool including a positioning assembly and a pressing head, the positioning assembly including a base, a limiting column and a limiting seat, the limiting column and the limiting seat are respectively arranged on the base, the pressing head is located on the side of the limiting column away from the base, the pressing head moves along the axis of the limiting column, the limiting seat includes a bottom plate and a seat body, the seat body is arranged on the bottom plate, the opening of the seat body is arranged toward the limiting column, the seat body is provided with a limiting groove, and the core head part of the inner core extends into the limiting groove through the opening.
[0008] The utility model uses the pressure head and the limiting column to perform main positioning on the eddy current area of the inner core, and the eddy current area is pressed tightly against the limiting column by the pressure head to ensure that the eddy current area is firmly positioned and prevent misalignment and offset between the two small inner cores constituting the inner core, and then the limiting seat is used to perform auxiliary positioning on the core head part of the inner core to further ensure that the inner core is firmly positioned, thereby ensuring that the eddy current area has good dimensional stability and the product appearance has no obvious parting line, which is beneficial to reducing the product scrap rate and reducing the quality cost loss of the product.
[0009] Preferably, the limiting column is provided with a through slot, the through slot is arranged along the axis of the limiting column, the top of the limiting column is provided with a positioning claw, the positioning claw includes a plurality of positioning blocks, and the positioning blocks are arranged around the through slot.
[0010] Preferably, the pressure head is cylindrical, and the bottom surface of the pressure head facing the limiting column is an annular plane, and the annular plane is used to contact the surface of the eddy flow area of the inner core.
[0011] The positioning claw is provided on the limiting column, which cooperates with the bottom surface of the pressure head to press the eddy current area of the inner core, so that the inner core is evenly stressed, avoiding the inner core being crushed or deformed during the pressing process, which is beneficial to reducing the scrap rate of the sand core in the sand core manufacturing process and reducing the quality cost loss of the product.
[0012] Preferably, the projection of the through groove on the horizontal plane is circular, the diameter of the through groove is not less than the diameter of the central hole of the eddy current region, and the difference between the radius of the through groove and the radius of the central hole is not greater than 0.15 mm.
[0013] By limiting the sizes of the through groove and the central hole, the contact range between the positioning claw and the eddy current area is limited, thereby preventing the positioning claw from interfering with the rest of the inner core.
[0014] Preferably, the bottom plate is arranged parallel to the base, and the limiting column and the bottom plate are respectively detachably connected to the base.
[0015] The limiting column and the bottom plate are easy to disassemble, which is beneficial to the maintenance of the press-fitting tooling in actual production, and the worn parts can be replaced, with low maintenance costs.
[0016] Preferably, the limiting groove includes a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove is arranged parallel to the opening, and the second positioning groove and the third positioning groove are located on the top of the seat body.
[0017] Preferably, the second positioning groove and the third positioning groove are arranged opposite to each other, and the first positioning groove is located between the second positioning groove and the third positioning groove.
[0018] The limiting groove is used to position the core head portion of the inner core, and cooperates with the limiting column to perform auxiliary positioning, thereby further ensuring that the inner core is positioned firmly.
[0019] Preferably, the height of the opening is not less than the height of the seat body, and the heights of the second positioning groove and the third positioning groove are not greater than the height of the first positioning groove.
[0020] By limiting the height of the opening, it is ensured that the core head part of the inner core can be placed in the limiting groove, and by limiting the size relationship between the first positioning groove, the second positioning groove and the third positioning groove, it is ensured that the second positioning groove and the third positioning groove can limit the movement of the positioning block of the core head part.
[0021] Compared with the prior art, the beneficial effects of the utility model are:
[0022] (1) The utility model uses a pressure head and a limit column to perform the main positioning of the eddy current area of the inner core of the double-tongue product. The pressure head presses the eddy current area tightly against the limit column to ensure that the eddy current area is firmly positioned and prevent the two small inner cores constituting the inner core of the double-tongue product from being misaligned and offset. The limit seat is then used to perform auxiliary positioning on the core head part of the inner core of the double-tongue product to further ensure that the inner core of the double-tongue product is firmly positioned, thereby ensuring that the eddy current area of the inner core of the double-tongue product has good dimensional stability and that the product appearance has no obvious parting line, which is beneficial to reducing the product scrap rate and reducing the quality cost loss of the product.
[0023] (2) The utility model provides a positioning claw on the limit column, which cooperates with the bottom surface of the pressure head to press the eddy current area of the inner core of the double-tongue product, so that the inner core of the double-tongue product is evenly stressed, avoiding the inner core of the double-tongue product being crushed or deformed during the pressing process, which is beneficial to reducing the scrap rate of the sand core in the sand core manufacturing process and reducing the quality cost loss of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the structure of the press-fitting tool in the embodiment of the utility model;
[0025] Figure 2 It is a schematic diagram of the structure of the press-fitting tool clamping the inner core of the double-tongue product in the embodiment of the utility model;
[0026] Figure 3 This is a schematic diagram of the structure of the positioning assembly in the embodiment of the utility model;
[0027] Figure 4 This is a schematic diagram of the structure of the pressure head in the embodiment of the utility model;
[0028] Figure 5 This is a schematic diagram of the structure of the inner core of the double-tongue product in the embodiment of the utility model;
[0029] Figure 6 This is a schematic diagram of the structure of the small inner core 1 in the embodiment of the utility model;
[0030] Figure 7 This is a schematic diagram of the structure of the small inner core 2 in the embodiment of the utility model;
[0031] In the figure: 1. positioning assembly; 2. pressure head; 3. inner core; 301. small inner core one; 302. small inner core two; 303. eddy current area; 304. core head part; 4. base; 5. limiting column; 501. through groove; 502. positioning claw; 6. limiting seat; 7. bottom plate; 8. seat body; 801. opening; 802. first positioning groove; 803. second positioning groove; 804. third positioning groove. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0034] like Figures 1 to 7 As shown, the specific scheme of the embodiment is as follows: a press-fitting tool for the inner core of a double-tongue product, including a press-fitting tool for clamping the inner core 3, the inner core 3 is the inner core 3 of a double-tongue product, the inner core 3 is formed by bonding a small inner core 1 301 and a small inner core 2 302, the inner core 3 includes an eddy current area 303 and a core head part 304, the press-fitting tool includes a positioning component 1 and a pressure head 2, the positioning component 1 includes a base 4, a limit column 5 and a limit seat 6, the limit column 5 and the limit seat 6 are respectively arranged on the base 4.
[0035] The limiting column 5 and the base 4 are detachably connected, and the axis of the limiting column 5 is arranged perpendicular to the base 4. The limiting column 5 includes four columns, and the columns are arranged around the axis of the limiting column 5. A through groove 501 is provided on the limiting column 5, and the through groove 501 is located between the columns. The through groove 501 is arranged along the axis of the limiting column 5. A positioning claw 502 is provided on the top of the limiting column 5, and the positioning claw 502 includes six positioning blocks, and the positioning blocks are arranged around the through groove 501.
[0036] The projection of the through groove 501 on the horizontal plane is circular, the diameter of the through groove 501 is not less than the diameter of the central hole of the eddy current region 303, and the difference between the radius of the through groove 501 and the radius of the central hole is not greater than 0.15 mm.
[0037] The pressure head 2 is located on the side of the limiting column 5 away from the base 4. The pressure head 2 is set on the robotic arm. The robotic arm drives the pressure head 2 to move along the axis of the limiting column 5, and the pressure head 2 approaches or moves away from the limiting column 5 during the movement. The pressure head 2 and the limiting column 5 jointly limit the movement of the eddy current area 303 in the vertical direction.
[0038] like Figure 4 As shown, the pressure head 2 is cylindrical, and the bottom surface of the pressure head 2 facing the limit column 5 is an annular plane, which is used to contact the surface of the eddy current area 303 of the inner core 3, and the bottom surface of the pressure head 2 is conformed to the contour of the top surface of the eddy current area 303.
[0039] The limiting seat 6 includes a bottom plate 7 and a seat body 8. The seat body 8 is arranged on the bottom plate 7. The bottom plate 7 is arranged parallel to the base 4. The bottom plate 7 is detachably connected to the base 4. The bottom plate 7 is used to limit the movement of the core head part 304 in the vertical direction. An opening 801 and a limiting groove are provided on the seat body 8. The opening 801 is arranged toward the limiting column 5. The height of the opening 801 is not less than the height of the seat body 8, so that the core head part 304 of the inner core 3 extends into the limiting groove through the opening 801.
[0040] like Figure 2 and Figure 3 As shown, the limiting groove is used to limit the horizontal movement of the core head part 304, and the limiting groove includes a first positioning groove 802, a second positioning groove 803 and a third positioning groove 804. The first positioning groove 802 is arranged parallel to the opening 801, and the second positioning groove 803 and the third positioning groove 804 are located at the top of the seat body 8. The second positioning groove 803 and the third positioning groove 804 are arranged opposite to each other, and the first positioning groove 802 is located between the second positioning groove 803 and the third positioning groove 804.
[0041] The height of the second positioning groove 803 and the third positioning groove 804 are both no greater than the height of the first positioning groove 802, the height of the second positioning groove 803 is no less than 0.6 times the height of the first positioning groove 802, and the height of the third positioning groove 804 is no less than 0.6 times the height of the first positioning groove 802, so that the second positioning groove 803 and the third positioning groove 804 can jointly limit the horizontal movement of the positioning block of the core head part 304.
[0042] The use of the press tooling is as follows:
[0043] By applying glue between the mating surfaces of small inner core 1 301 and small inner core 2 302, the two are bonded into inner core 3, and the inner core 3 is placed on the positioning component 1, so that the eddy current area 303 of the inner core 3 is located on the limiting column 5, and the core head part 304 of the inner core 3 is located in the limiting groove of the limiting seat 6, and then the eddy current area 303 of the inner core 3 is pressed tightly against the limiting column 5 by using the pressing head 2. On the one hand, the movement of the inner core 3 in the vertical direction is limited by the pressing head 2 and the limiting column 5. On the other hand, the movement or rotation of the inner core 3 in the horizontal direction is limited by the cooperation of the pressing head 2, the limiting column 5 and the limiting seat 6, so that the pressing tool can stably clamp the inner core 3, ensure that the inner core 3 is firmly positioned, and prevent the small inner core 1 301 and the small inner core 2 302 from being misaligned or mismatched.
[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A press-fitting tool for the inner core of a double-tongue product, comprising a press-fitting tool for clamping the inner core, characterized in that: The pressing tool includes a positioning component and a pressing head, the positioning component includes a base, a limiting column and a limiting seat, the limiting column and the limiting seat are respectively arranged on the base, the pressing head is located on the side of the limiting column away from the base, the pressing head moves along the axis of the limiting column, the limiting seat includes a bottom plate and a seat body, the seat body is arranged on the bottom plate, the opening of the seat body is arranged toward the limiting column, the seat body is provided with a limiting groove, and the core head part of the inner core extends into the limiting groove through the opening.
2. A press-fitting tool for the inner core of a double-tongue product according to claim 1, characterized in that: The limiting column is provided with a through slot, and the through slot is arranged along the axis of the limiting column. The top of the limiting column is provided with a positioning claw, and the positioning claw includes a plurality of positioning blocks, and the positioning blocks are arranged around the through slot.
3. A press-fitting tool for the inner core of a double-tongue product according to claim 2, characterized in that: The pressure head is cylindrical, and the bottom surface of the pressure head facing the limiting column is an annular plane, and the annular plane is used to contact the surface of the eddy flow area of the inner core.
4. A press-fitting tool for the inner core of a double-tongue product according to claim 3, characterized in that: The projection of the through groove on the horizontal plane is circular, the diameter of the through groove is not less than the diameter of the central hole of the eddy current area, and the difference between the radius of the through groove and the radius of the central hole is not greater than 0.15 mm.
5. The press-fitting tool for the inner core of a double-tongue product according to claim 1, characterized in that: The bottom plate is arranged parallel to the base, and the limiting column and the bottom plate are respectively detachably connected to the base.
6. The press-fitting tool for the inner core of a double-tongue product according to claim 1, characterized in that: The limiting groove includes a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove is arranged parallel to the opening, and the second positioning groove and the third positioning groove are located on the top of the seat body.
7. A press-fitting tool for the inner core of a double-tongue product according to claim 6, characterized in that: The second positioning groove and the third positioning groove are arranged opposite to each other, and the first positioning groove is located between the second positioning groove and the third positioning groove.
8. The press-fitting tool for the inner core of a double-tongue product according to claim 6, characterized in that: The height of the opening is not less than the height of the seat body, and the heights of the second positioning groove and the third positioning groove are not greater than the height of the first positioning groove.