Method of mounting

Abstract

The application relates to a clamping method in the casting technical field, which is used to solve the problems of large work load and instability of bare pouring bolt clamping, and comprises the following steps: firstly, the side surface of a sand core needing clamping is designed as an inwardly inclined inclined surface; secondly, a clamp for clamping the sand core is arranged according to the inclination angle of the inclined surface; thirdly, the clamp is sleeved on the sand core, and the clamp is attached to the inclined surface of the sand core, so that the clamp effectively clamps the sand core. Through the mode that the contact surface of the sand core and the clamp is designed as an inclined surface, the clamp and the sand core are quickly sleeved and positioned; and through the clamping structure in the form of a clamping plate, large-area clamping effect is realized, and the problems of low clamping efficiency and poor stability caused by the need of arranging multiple bolt clamping devices are avoided.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and in particular to a method for mounting sand cores and a clamping device thereof. Background Technology

[0002] Casting is a process in which metal is melted into a liquid that meets certain requirements and poured into a mold. After cooling and solidification, and cleaning, a casting with a predetermined shape, size, and properties is obtained.

[0003] Before pouring into the core package (an assembly of sand cores and sand molds that forms a complete cavity structure for castings, consisting of sand cores and sand molds, or sand molds and sand molds, or sand cores and sand cores), fixtures must be installed before and after the core package to improve its overall strength due to the influence of the sand mold strength. However, this not only prolongs the installation time but also increases the labor intensity.

[0004] In addition, 3D printed cores are cores produced using 3D printing technology. This involves adding material layer by layer using a 3D printer to create a 3D solid object. 3D printing is not limited by shape and can print any shape except for closed cavities. It can be said that the more complex the product, the more suitable it is for 3D printing production. However, 3D printed sand molds have low strength and tend to crumble significantly during casting, making them prone to sparking. Current solutions involve using clamps to secure the assembled core package to improve the strength of the sand mold and prevent crumbling. However, this approach has a drawback: all clamps must be bolted in place, significantly increasing clamping time and the workload for workers. Summary of the Invention

[0005] In view of the difficulties and large workload of installing the core package in bare casting, it is necessary to propose a mounting method that enables quick and convenient mounting of the core package.

[0006] A method for installing a card, including,

[0007] 1) Design the side of the sand core that needs to be clamped as an inwardly sloping surface;

[0008] 2) A clamp for holding the sand core is provided according to the inclination angle of the inclined surface;

[0009] 3) The clamp is fitted onto the sand core and the clamp is made to fit against the inclined surface of the sand core, so as to effectively secure the sand core.

[0010] Preferably, in order to improve the strength of the sand core, reinforcing ribs with a strengthening effect are designed on the inclined surface of the sand core.

[0011] Preferably, the inclined surface of the sand core is inclined to the middle of the sand core, or the angle between the inclined surface of the sand core and the vertical direction is 0-7 degrees.

[0012] Preferably, the clamp includes a clamping plate and a locking member. There are two clamping plates, which are respectively used to contact the inclined surface to perform a clamping function. There are at least two locking members, which are used to fasten the sand core. That is, the locking members are used to lock the position of the clamping plate so that the clamping plate can be tightly attached to the inclined surface of the sand core.

[0013] More preferably, at least two locking elements are provided symmetrically to tighten the two locking plates.

[0014] More preferably, the clamp further includes a positioning element for making the angle of inclination of the two clamping plates the same as the angle of inclination of the inclined surface of the sand core.

[0015] The beneficial effects of the technical solution of the present invention are as follows: by setting the contact surface between the sand core and the clamp as an inclined surface, the clamp and the sand core can be quickly assembled and positioned; and by setting a clamping structure in the form of a clamping plate, a large-area clamping effect is achieved, avoiding the problems of low clamping efficiency and poor stability caused by the need to set multiple bolt clamping devices. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a sand core structure;

[0017] Figure 2 This is a schematic diagram of a clamp structure;

[0018] Figure 3 This is a schematic diagram of the usage state of the clamp described in this invention;

[0019] Among them, 1-upper sand core; 2-middle sand core; 3-lower sand core; 4-square steel; 5-steel plate; 6-locking component. Detailed Implementation

[0020] To more clearly illustrate the technical solution of the present invention, the technical solution of the invention will be described in detail with reference to the accompanying drawings. Obviously, the following description is some typical embodiments of the present invention. For those skilled in the art, other solutions can be obtained based on these embodiments without creative effort.

[0021] To address the problems of high installation workload and unstable fastening effect caused by bolt clamping in existing bare casting core packages (a combination of sand cores and / or sand molds assembled to form a complete casting cavity), this invention proposes a clamping method and clamping fixture, which achieves fast and convenient clamping of the core package.

[0022] A method for installing a card, including,

[0023] 1) Design the side of the sand core that needs to be clamped as an inwardly sloping surface;

[0024] 2) A clamp for holding the sand core is provided according to the slope of the inclined surface;

[0025] 3) The clamp is fitted onto the sand core and the clamp is made to fit against the inclined surface of the sand core, thereby effectively securing the sand core.

[0026] The technical solution of the present invention will now be described in detail using a spindle box as an example.

[0027] Example 1:

[0028] The first step is to design the sand core of the spindle box.

[0029] 1) Create a three-dimensional model of the spindle box in the design software, set the side wall used for clamping as an inclined surface, the inclination angle of the inclined surface is 0-7 degrees (that is, the angle between the inclined surface of the sand core and the vertical direction is 0-7), and the inclined surface is set to tilt towards the middle of the three-dimensional model, that is, the three-dimensional model is in a contracted state from bottom to top, and the angle of contraction is also the angle of the inclination.

[0030] 2) According to the relevant casting requirements, such as casting direction, casting position, and the structure of the spindle box, the three-dimensional model is horizontally divided into three sand cores, namely upper sand core 1, middle sand core 2 and lower sand core 3.

[0031] As a supplement to this implementation, to improve the strength of the sand core, reinforcing ribs are provided on the inclined surface for support. These ribs help to restore the inclined surface to a flat plane, facilitating the placement of the sand core on a horizontal receiving platform, thus simplifying its handling. In this embodiment, on the one hand, the core-separating surface of the sand core has positioning or cavity structures, making it unsuitable as a transport surface; on the other hand, the non-clamping surface has lifting structures for transporting the sand core, also making it unsuitable as a transport surface. To enable the inclined surface to function effectively as a transport surface, the reinforcing ribs are provided. These ribs improve the strength of the sand core, preventing breakage or damage during transport; furthermore, they transform the inclined surface into a flat plane, achieving a superior transport effect. Preferably, the reinforcing rib is a wedge with a single-sided bevel, meaning the bevel angle of the wedge is the same as that of the sand core, and the bevel angle of the wedge mates with the bevel angle of the sand core. The plane of the wedge faces away from the bevel angle of the sand core, and the plane of the wedge serves as the bearing surface of the sand core. To ensure stable bearing of the sand core, at least three reinforcing ribs are provided on the bevel angle.

[0032] The second step is to make the fixtures.

[0033] 1) Prepare two square steel bars 4, each of which has through holes at both ends;

[0034] 2) Fabricate the positioning component;

[0035] 3) At least three steel plates 5 are provided on each of the square steel 4, and the three steel plates 5 form a clamping plate that can cover the inclined surface of the medium sand core 2;

[0036] 4) The positioning element is set between the square steel 4 and the steel plate 5, and the three are fixed together so that the tilt angle of the clamping plate is consistent with the tilt angle of the sand core inclined surface; for example, the three are welded together to ensure that the clamping plate composed of the square steel 4, the steel plate 5 and the positioning element is stable enough and has sufficient resistance to external forces.

[0037] 5) Two locking parts 6 pass through the through holes on the square steel 4 to connect the two clamping plates into a whole clamping device. The locking parts 6 are connecting rods with threads at both ends. The connecting rods are locked to the square steel 4 on the clamping plate by two or four nuts.

[0038] As a supplement to this implementation, in order to better control the slope of the card plate to be the same as the slope of the sand core, a positioning component can be provided. The positioning component is manufactured as follows:

[0039] 1) Make a wedge with one side being flat and the other side being inclined, and the inclination angle of the inclined side is the same as the inclination angle of the inclined side of the sand core;

[0040] 2) The flat surface of the wedge is placed on the square steel 4, and the steel plate 5 is placed on the inclined surface of the wedge, thereby forming a clamping plate with the same inclination angle as the inclined surface of the sand core.

[0041] As another supplement to this implementation, the steel plate 5 is provided with a hollow structure at the corresponding position of the positioning component. The hollow structure is used to accommodate the positioning component, so as to achieve a tight fit between the clamping plate and the inclined surface of the sand core, ensuring the stability and firmness of the clamping, and ensuring the clamping force of the core package in the horizontal direction, thus replacing the original function of the sand box.

[0042] The third step is core clamping.

[0043] 1) The upper sand core 1, middle sand core 2 and lower sand core 3, after being shaped, cleaned, and coated, are combined into a core package with a complete cavity structure;

[0044] 2) Attach the two card plates to the inclined surface of the medium sand core 2 respectively, and make the positioning parts cooperate well with the hollow structure to avoid mutual interference between the two;

[0045] 3) Pass the two locking parts 6 through the through holes at the two ends of the two square steels 4 of the card plate respectively, and use nuts to tighten the two card plates that are connected to each other, so as to achieve the clamping or horizontal fastening of the middle sand core 2.

[0046] Example 2:

[0047] This embodiment only describes the differences from Embodiment 1; the same technical features will not be repeated.

[0048] In this embodiment, the method for manufacturing the clamp includes:

[0049] 1) Prepare four square steel bars 4, each of which has through holes at both ends;

[0050] 2) Fabricate the positioning component;

[0051] 3) Two square steel bars 4 are arranged side by side in a group, and long strip steel plates 5 are set on each group of square steel bars 4. At least three long strip steel plates 5 are set on each group of square steel bars 4. Several steel plates 5 form a sloping plate that can cover the middle sand core 2, the upper sand core 1 with at least one-third of its height and the lower sand core 3 with at least one-third of its height.

[0052] 4) The positioning element is placed between the square steel 4 and the steel plate 5, so that the inclination angle of the steel plate 5 is consistent with the inclination angle of the sand core inclined surface;

[0053] 5) Four locking pieces 6 pass through the through holes on the square steel 4 to connect the two clamping plates into a single clamping device.

[0054] As a supplement to this implementation, in order to clamp the core package more quickly, the clamp can be pre-installed, specifically including:

[0055] 1) Measure the width of the bottom of the lower sand core 3;

[0056] 2) Insert the locking member 6 into the square steel 4 so that the distance between the two clamping plates is greater than the width of the bottom of the lower sand core 3 and less than the width of the bottom of the lower sand core 3 plus 10mm.

[0057] By pre-installing the clamps to a width that can be fitted over the core package, quick clamping of the core package is achieved, saving production waiting time and improving production efficiency and clamping efficiency.

[0058] The above embodiments are merely descriptions of a typical application of the technical solution of the present invention. Reasonable extensions can be made without requiring creative effort.

Claims

1. A method for mounting a card, characterized in that, include: The side of the sand core that needs to be clamped is designed to have an inwardly sloping surface; The steps involved in designing sand cores include: A three-dimensional model of the spindle box is created in the design software, and the side wall used for clamping is set as an inclined surface, which is set to slope towards the middle of the three-dimensional model; According to the relevant casting requirements and the structure of the spindle box, the three-dimensional model is horizontally divided into three sand cores, namely the upper sand core, the middle sand core and the lower sand core. A clamping device for mounting the sand core is provided according to the inclination angle of the inclined surface. The clamping device includes a clamping plate, a locking member, and a positioning member. There are two clamping plates for cooperating with the inclined surface; there are at least two locking members for fastening the sand core; and the positioning member is used to make the inclination angle of the clamping plate the same as the inclination angle of the inclined surface of the sand core. The steps for making the aforementioned clamp include: Prepare two square steel bars, each with through holes at both ends; Fabricate the positioning component; At least three steel plates are provided on each of the square steel bars, and the three steel plates form a clamping plate that can cover the inclined surface of the medium sand core; The positioning element is set between the square steel and the steel plate, and the three are fixed together so that the tilt angle of the clamping plate is consistent with the tilt angle of the sand core inclined surface; Two locking elements pass through through holes in the square steel to connect the two clamping plates into a single clamping device; The clamp is fitted onto the sand core, and the clamp is made to fit against the inclined surface of the sand core to secure the sand core.

2. The card mounting method as described in claim 1, characterized in that, The inclination angle of the inclined surface of the sand core is 0-7 degrees.

3. The card mounting method as described in claim 2, characterized in that, The inclined surface of the sand core is provided with several reinforcing ribs.

4. The card mounting method as described in claim 1, characterized in that, The locking component is a connecting rod with threads at both ends, which is locked onto the square steel on the card plate by two or four nuts.

5. The card mounting method as described in claim 1, characterized in that, The step of fitting the clamp onto the sand core and holding the sand core includes: The upper, middle, and lower sand cores, after being shaped, cleaned, purified, and coated, are combined into a core package with a complete cavity structure. The two card plates are respectively attached to the inclined surface of the medium sand core, and the positioning component is well matched with the hollow structure to avoid mutual interference between the two. The two locking components are passed through the through holes at the two ends of the two square steel plates of the clamping plate, respectively. Nuts are used to tighten the two clamping plates connected to each other, so as to achieve the clamping or horizontal fastening of the sand core.

6. The card mounting method as described in claim 1, characterized in that, The step of manufacturing the clamp for mounting the sand core, based on the inclination angle of the inclined plane, includes: Prepare four square steel bars, each with through holes at both ends; Fabricate the positioning component; Two square steel bars are arranged side by side in a group. Long strip steel plates are set on each group of square steel bars. At least three long strip steel plates are set on each group of square steel bars. Several of the steel plates form an inclined plate that can cover the middle sand core, the upper sand core with at least one-third of its height, and the lower sand core with at least one-third of its height. The positioning element is placed between the square steel and the steel plate, so that the inclination angle of the steel plate is consistent with the inclination angle of the sand core inclined surface; Four locking elements pass through through holes in the square steel to connect the two clamping plates into a single clamp.

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