Lost foam casting positioning device capable of controlling size A

Abstract

The invention discloses an evanescent mode casting positioning device capable of controlling the size A. The evanescent mode casting positioning device comprises a mounting seat, the top of the mounting seat is provided with an adaptive mechanism for assisting mounting, and the mounting seat is internally provided with a positioning mechanism for positioning the die body; through cooperative arrangement of the adaptation mechanism, the positioning mechanism and the inner clamping mechanism, positioning is not limited by the density of foam any more, clamping jaws on the two sides of the A-size tool are opened to make contact with a white mold, negative pressure is generated through a vacuum pump, the white mold is adsorbed to the clamping jaws, then the A-size white mold is pulled back to a standard position, and positioning is achieved. The device is more accurate and stable, operation is more convenient, time is saved, according to cooperation between the adaptation mechanism and the positioning mechanism, positioning work of the placed white mold can be achieved, the inner clamping mechanism can clamp the white mold inwards from the inner side wall, the white mold can be driven to be pulled back to the preset position in a pneumatic negative pressure adsorption mode, and the labor intensity of workers is lowered. Therefore, the accuracy is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of lost foam casting, and particularly relates to a positioning device for controlling the size of dimension A in lost foam casting. Background Art

[0002] Lost foam is an advanced casting process that uses a foam plastic mold in combination with binder-free dry sand and vacuum pumping technology. The casting is formed by replacing the vaporized mold with molten metal. Lost foam casting (also known as full-mold casting) is a new type of casting method. Its core principle is to use a foam plastic mold similar in size and shape to the casting, and finally form the casting through a series of technological steps.

[0003] Lost foam casting, also known as full-mold casting, is a new type of casting method. It uses a foam plastic mold similar in size and shape to the casting, and finally forms the casting through a series of technological steps. In lost foam casting, "positioning for controlling the size of dimension A" mainly refers to ensuring that the key dimension (dimension A) in the casting reaches the required spatial position accuracy during mold making, assembly, and pouring through specific technological means.

[0004] As is well known, the dimensional accuracy of the white mold used in the lost foam process is particularly important. Since the shape of the required casting is relatively complex, multiple pieces of lost foam need to be combined before casting production. The combined mold pieces are often bonded manually. Due to different manual forces and binder dosages during combination, the size of the combined lost foam is uneven, which will result in unqualified casting sizes and a large number of defective products. Therefore, it is of great significance to provide a positioning and clamping device for the lost foam white mold that can improve the quality of the casting.

[0005] In view of the above technical problems, for example, the patent with publication number CN204470529U discloses a positioning and clamping device for the lost foam white mold, which is simple, convenient, and flexible. It positions and clamps through a positioning plate and a movable clamping plate, with uniform clamping force, ensuring geometric dimensions and bonding firmness, and greatly improving the yield rate.

[0006] The prior art still has the following deficiencies. The casting dimension A depends on the situation of the foam, and the foam is prone to deformation during the sand filling process. There are many uncertain factors when the operator manually uses a glass rod to control the position of dimension A. Summary of the Invention

[0007] The purpose of the present invention is to provide a positioning device for controlling the size of dimension A in lost foam casting, which is no longer limited by factors such as the density of the foam. The side claws of the dimension A tooling are opened to contact the white mold, and a negative pressure is generated by a vacuum pump to adsorb the white mold on the claws. Then, the dimension A of the white mold is pulled back to the standard position, which is more accurate, stable, and convenient to operate, saving time, so as to solve the problems raised in the above background art.

[0008] To achieve the above object, the present invention provides the following technical solutions: A lost foam casting controllable A-size positioning device, including a mounting base;

[0009] A fitting mechanism for auxiliary installation is provided at the top of the mounting base, a positioning mechanism for positioning the mold body is provided inside the mounting base, and an inner clamping mechanism for inner support of the mold body is provided at the top of the mounting base;

[0010] The positioning mechanism includes a sliding component, a support component and a limiting component. The sliding component is arranged at the top of the inner cavity of the mounting base, the support component is arranged on the top of the sliding component, and the limiting component is arranged on the top of the support component;

[0011] The inner clamping mechanism includes a bearing component, an elastic component and an inner support component. The bearing component is arranged at the bottom of the inner cavity of the mounting base, the elastic component is arranged inside the bearing component, and the inner support component is arranged inside the elastic component.

[0012] Exemplarily, the bearing component includes a mounting frame, the mounting frame is bolted to the bottom of the inner cavity of the mounting base, a bearing seat is bolted to the top of the mounting frame, and a mounting groove is formed at the top of the bearing seat.

[0013] Exemplarily, the elastic component includes a spring, the spring is welded to the inner side wall of the mounting groove, a clamping plate is welded to the inner end of the spring, a connecting rod is fixedly installed on the outer side of the clamping plate, and the spring is located outside the connecting rod.

[0014] Exemplarily, the inner support component includes a pneumatic fixture, the pneumatic fixture is placed inside the clamping plate, a chuck is installed on the top of the pneumatic fixture, and a positioning groove is formed at the top of the chuck.

[0015] Exemplarily, the sliding component includes a cross bar, the cross bar is fixedly installed on the top of the inner cavity of the mounting base, and a connecting sleeve is slidably connected to the outer side of the cross bar.

[0016] Exemplarily, the support component includes a connecting block, the connecting block is fixedly installed on the top of the connecting sleeve, and a positioning hole is formed at the top of the connecting block.

[0017] Exemplarily, the limiting component includes a positioning block, the positioning block is inserted into the positioning hole, a positioning seat is fixedly installed on the top of the positioning block, and bolt holes are formed at the tops of the positioning seat and the connecting block.

[0018] Exemplarily, the fitting mechanism includes a limiting component and side rods. The limiting component is arranged on the top of the mounting base, and the side rods are fixedly installed at both ends of the mounting base.

[0019] Exemplarily, the limit assembly includes a first through hole which is opened at the top of the mounting seat, and a second through hole is also opened at the top of the mounting seat.

[0020] Exemplarily, a bottom box is bolted to the bottom of the mounting seat, and a mold body is placed on the top of the mounting seat.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] Through the cooperative setting of the adaptation mechanism, the positioning mechanism and the inner clamping mechanism, when positioning, it is no longer limited by the density of the foam, etc. The two clamping claws on both sides of the A-size tooling are opened to contact the white mold, and a negative pressure is generated by a vacuum pump to adsorb the white mold on the clamping claws, and then the A-size of the white mold is pulled back to the standard position, which is more accurate, stable and more convenient to operate, saving time. According to the cooperation between the adaptation mechanism and the positioning mechanism, the positioning of the placed white mold can be realized, and the inner clamping mechanism can not only clamp the white mold from the inner side wall, but also drive the white mold to pull it back to the predetermined position according to the pneumatic negative pressure adsorption method to ensure its accuracy.

[0023] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be realized and obtained by the structure pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the mounting seat of the present invention;

[0026] Figure 3 It is a schematic structural diagram of the second through hole of the present invention;

[0027] Figure 4 It is a schematic internal structure diagram of the mounting seat of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the positioning seat of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the mounting bracket of the present invention.

[0030] In the figure: 1, mounting base; 2, adaptation mechanism; 21, first perforation; 22, second perforation; 23, side rod; 3, positioning mechanism; 31, cross bar; 32, connecting sleeve; 33, connecting block; 34, positioning hole; 35, positioning block; 36, positioning seat; 37, bolt hole; 4, inner clamping mechanism; 41, mounting bracket; 42, bearing seat; 43, mounting groove; 44, pneumatic fixture; 45, chuck; 46, positioning groove; 47, spring; 48, clamping plate; 49, connecting rod; 5, bottom box; 6, mold body. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention provides a lost foam casting A-size controllable positioning device, including a mounting base 1;

[0033] The top of the mounting base 1 is provided with an adaptation mechanism 2 for auxiliary installation, the inside of the mounting base 1 is provided with a positioning mechanism 3 for mold positioning, and the top of the mounting base 1 is provided with an inner clamping mechanism 4 for inner support of the mold;

[0034] The positioning mechanism 3 includes a sliding assembly, a support assembly and a limiting assembly. The sliding assembly is arranged at the top of the inner cavity of the mounting base 1, the support assembly is arranged on the top of the sliding assembly, and the limiting assembly is arranged on the top of the support assembly;

[0035] Through the cooperation between the sliding assembly, the support assembly and the limiting assembly, not only can the white mold be positioned when adjusted, but also white molds of different sizes can be adapted according to actual needs;

[0036] The inner clamping mechanism 4 includes a bearing assembly, an elastic assembly and an inner support assembly. The bearing assembly is arranged at the bottom of the inner cavity of the mounting base 1, the elastic assembly is arranged inside the bearing assembly, and the inner support assembly is arranged inside the elastic assembly.

[0037] Through the cooperation between the bearing assembly, the elastic assembly and the inner support assembly, the white mold can be clamped and positioned from the inside out, and the operation is carried out in a starting mode. At the same time, the negative pressure adsorption operation can be completed in cooperation with an external vacuum pump, so that after being located inside and during the contact process, the white mold is adsorbed and moved to a predetermined position by pulling, so as to ensure the accuracy of the position and the stability during the process.

[0038] Preferably;

[0039] Such as Figure 6As shown in the figure, the bearing component includes a mounting frame 41, which is bolted to the bottom of the inner cavity of the mounting seat 1. A bearing seat 42 is bolted to the top of the mounting frame 41. An installation groove 43 is provided at the top of the bearing seat 42, which is convenient for supporting and bearing the following components to ensure their stable operation.

[0040] As Figure 6 shown in the figure, the elastic component includes a spring 47, which is welded to the inner side wall of the installation groove 43. A clamping plate 48 is welded to the inner end of the spring 47. A connecting rod 49 is fixedly installed on the outer side of the clamping plate 48. The spring 47 is located on the outer side of the connecting rod 49. The position is clamped and positioned according to the elastic clamping method to avoid deviation. At the same time, after the positioning is completed, the pneumatic fixture 44 can be locked on the top of the mounting seat 1 by means of an additional bolt.

[0041] As Figure 6 shown in the figure, the inner support component includes a pneumatic fixture 44, which is placed inside the clamping plate 48. A chuck 45 is installed on the top of the pneumatic fixture 44. A positioning groove 46 is provided at the top of the chuck 45. The clamping operation is completed according to the start mode. At the same time, the white mold can be synchronously pulled for displacement by means of pneumatic vacuum negative pressure, and then the white mold is driven to move to the precise predetermined position.

[0042] During operation, first place the white mold on the top of the mounting seat 1. As Figure 1 shown in the figure, the white mold mentioned above is the mold body 6. Then, the pneumatic fixture 44 is fixed by an external air pump. At this time, the pneumatic fixture 44 will drive the chuck 45 to move and closely fit against the inner side wall of the mold body 6. Then, place the glass rod inside the positioning groove 46 and it will contact the mold body 6. Then, the chuck 45 will form a vacuum negative pressure according to the connected negative pressure pipe. At this time, the movement of the chuck 45 and the mold body 6 adsorbed by the vacuum negative pressure, that is, the above-mentioned white mold, will be moved to the predetermined standard position. This operation process is not only precise and stable, but also simple, time-saving and labor-saving;

[0043] When installing the pneumatic fixture 44, first install the mounting frame 41 by bolts, then install the bearing seat 42 to the top of the mounting frame 41 by bolts. Subsequently, take out the pneumatic fixture 44 and hang it through the second through hole 22 to replace the top of the mounting seat 1 and insert it into the installation groove 43 provided at the top of the bearing seat 42. During the insertion process, the pneumatic fixture 44 will also squeeze the clamping plate 48, and the top inner side of the clamping plate 48 is arc-shaped to ensure that there is no obstruction during insertion;

[0044] During the insertion process, the size of the pneumatic fixture 44 will push the clamping plate 48. When the clamping plate 48 is pushed, it will move outward, squeeze the spring 47 at the same time, and drive the connecting rod 49 to move together. The connecting rod 49 is in a through-sliding state with the bearing seat 42. After the operation is completed, the placement operation of the pneumatic fixture 44 can be completed, facilitating the above work;

[0045] It is also possible to weld a disc on the outside of the pneumatic fixture 44 and then open holes to lock it on the top of the mounting seat 1 through two positioning bolts. This operation can ensure the stability and connection effect during installation.

[0046] Based on the above, during positioning in the working process, it is no longer restricted by the density of the foam, etc. The two jaws of the A-size tooling open to contact the white mold, and a negative pressure is generated by the vacuum pump to adsorb the white mold on the jaws. Then, the A-size of the white mold is pulled back to the standard position, which is more accurate, stable, and more convenient to operate, saving time.

[0047] Furthermore;

[0048] Such as Figure 5 shown, the sliding assembly includes a cross bar 31. The cross bar 31 is fixedly installed at the top of the inner cavity of the mounting seat 1. A connecting sleeve 32 is slidably connected to the outside of the cross bar 31, which facilitates the sliding adjustment of the positioning position to adapt to white molds of different sizes, thereby improving the practicality.

[0049] Such as Figure 5 shown, the support assembly includes a connecting block 33. The connecting block 33 is fixedly installed on the top of the connecting sleeve 32. A positioning hole 34 is opened at the top of the connecting block 33, which can support and position the limit component during installation, avoiding slow alignment speed during installation and affecting the installation efficiency.

[0050] Such as Figure 5 shown, the limit assembly includes a positioning block 35. The positioning block 35 is inserted into the positioning hole 34. A positioning seat 36 is fixedly installed on the top of the positioning block 35. Bolting holes 37 are opened at the tops of the positioning seat 36 and the connecting block 33, which can control the established dimension position during the positioning of the white mold, facilitating subsequent operations.

[0051] As shown in the installation position in the figure, it is the standard dimension position. When adjustment is required, directly pull the positioning seat 36 to move. At this time, the positioning seat 36 is in an unlocked state. During the movement of the positioning seat 36, the connecting sleeve 32 will also be driven by the connecting block 33 to slide on the outside of the cross bar 31, and the positioning seat 36 slides on the top of the mounting seat 1, while the connecting block 33 slides inside the first through hole 21. The two are fully adapted to form a limit during the movement;

[0052] During installation, the connecting block 33 is directly fixed to the top of the connecting sleeve 32. At this time, take out the positioning seat 36, use the positioning seat 36 to drive the positioning block 35 to move downward, and fit it on the top of the mounting seat 1. The positioning block 35 will be inserted into the positioning hole 34 to form the positioning before locking. When adjusting the position, just directly pull as described above for the adjustment of the child. When moving to the required position, that is, the position adapted to the size of the white mold, then take out the bolt, and through the bolt hole 37 opened, the positioning seat 36 and the connecting block 33 are connected by the bolt. Since the positioning seat 36 is located on the top of the mounting seat 1, the positioning seat 36 will be tightened when the bolt is installed, or the connecting block 33 pulls the connecting sleeve 32, causing the connecting sleeve 32 and the cross bar 31 to be tightly connected. At the same time, the positioning seat 36 will be pressed against the top of the mounting seat 1 to complete the position locking operation.

[0053] Among them;

[0054] Such as Figure 3 As shown, the adaptation mechanism 2 includes a limiting component and a side rod 23. The limiting component is arranged on the top of the mounting seat 1, and the side rod 23 is fixedly installed at both ends of the mounting seat 1. The side rod 23 facilitates the taking and placing of the mounting seat 1, so that the mounting seat 1 can be directly moved away from the top of the bottom box 5 during installation and disassembly.

[0055] Such as Figure 3 As shown, the limiting component includes a first through hole 21 opened on the top of the mounting seat 1. A second through hole 22 is also opened on the top of the mounting seat 1. The opening of the first through hole 21 and the second through hole 22 facilitates the adaptation of the above-mentioned connecting block 33 and the pneumatic clamp 44.

[0056] According to the above, when adjusting the positioning position of the white mold size to be adapted, the connecting block 33 will slide inside the first through hole 21, and based on the length of the first through hole 21, the limiting operation during sliding is realized. The second through hole 22 facilitates the positioning and pressing work when the pneumatic clamp 44 is placed. During the placement process, as described above, move from top to bottom, and pass through the top of the mounting seat 1 through the second through hole 22 and extend into the mounting seat 1.

[0057] Finally;

[0058] Such as Figure 1 As shown, the bottom of the mounting seat 1 is bolted with a bottom box 5, and a mold body 6 is placed on the top of the mounting seat 1. The bottom box 5 is mainly used to install equipment such as the required vacuum pump and air pump. In addition, a bracket for installing the control panel is bolted to one end of the top of the bottom box 5, such as Figure 1 shown at the corner position of one end in the figure, for easy operation. The mold body 6 is the above-mentioned white mold, and when positioning its size, it can be directly placed in the established position in the above-mentioned manner.

[0059] In summary, through the cooperation of the structure, the white mold is no longer restricted by factors such as the density of the foam. The clamping jaws on both sides of the A-size tooling are opened to contact the white mold, and a negative pressure is generated by a vacuum pump to adsorb the white mold on the clamping jaws. Then, the A-size of the white mold is pulled back to the standard position, which is more accurate, stable, and convenient to operate, saving time, avoiding the situation where the casting A-size depends on the foam, and the foam is prone to deformation during the sand filling process. The phenomenon that there are many uncertain factors when the operator manually uses a glass rod to control the A-size position is avoided.

[0060] At the same time, it is not only applicable to white molds of one size, that is, the standard size, but also applicable to white molds of different sizes, thereby improving the practicality in actual use to meet the diverse needs of users.

[0061] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lost foam casting positioning device capable of controlling the size of A, characterized in that: comprising a mounting base (1); The top of the mounting seat (1) is provided with an adapting mechanism (2) for assisting installation, the interior of the mounting seat (1) is provided with a positioning mechanism (3) for positioning the mold body, and the top of the mounting seat (1) is provided with an internal clamping mechanism (4) for internal support of the mold body; The positioning mechanism (3) comprises a sliding assembly, a supporting assembly and a limiting assembly, wherein the sliding assembly is arranged at the top of the inner cavity of the mounting seat (1), the supporting assembly is arranged at the top of the sliding assembly, and the limiting assembly is arranged at the top of the supporting assembly; The inner clamping mechanism (4) comprises a bearing component, an elastic component and an inner support component, wherein the bearing component is arranged at the bottom of the inner cavity of the mounting seat (1), the elastic component is arranged inside the bearing component, and the inner support component is arranged on the inner side of the elastic component.

2. The lost foam casting A-size controllable positioning device according to claim 1, characterized in that: The bearing assembly comprises a mounting frame (41), wherein the mounting frame (41) is bolted to the bottom of the inner cavity of the mounting seat (1), the top of the mounting frame (41) is bolted to a bearing seat (42), and the top of the bearing seat (42) is provided with a mounting groove (43).

3. The lost foam casting A-size controllable positioning device according to claim 2, characterized in that: The elastic component comprises a spring (47), the spring (47) is welded to the inner wall of the mounting groove (43), a clamping plate (48) is welded to the inner end of the spring (47), a connecting rod (49) is fixedly mounted on the outer side of the clamping plate (48), and the spring (47) is located on the outer side of the connecting rod (49).

4. The lost foam casting A-size controllable positioning device according to claim 3, characterized in that: The inner support assembly comprises a pneumatic clamp (44), which is placed on the inner side of a clamp plate (48). A clamp (45) is installed on the top of the pneumatic clamp (44), and a positioning groove (46) is provided on the top of the clamp (45).

5. The lost foam casting A-size controllable positioning device according to claim 1, characterized in that: The sliding assembly comprises a cross bar (31), the cross bar (31) is fixedly mounted on the top of the inner cavity of the mounting seat (1), and the outer side of the cross bar (31) is slidably connected to a connecting sleeve (32).

6. The lost foam casting A-size controllable positioning device according to claim 5, characterized in that: The support assembly comprises a connecting block (33), wherein the connecting block (33) is fixedly mounted on the top of the connecting sleeve (32), and a positioning hole (34) is provided on the top of the connecting block (33).

7. The lost foam casting A-size controllable positioning device according to claim 6, characterized in that: The limiting assembly comprises a positioning block (35), the positioning block (35) is inserted into the interior of the positioning hole (34), a positioning seat (36) is fixedly installed on the top of the positioning block (35), and bolt holes (37) are provided on the tops of the positioning seat (36) and the connecting block (33).

8. The lost foam casting A-size controllable positioning device according to claim 1, characterized in that: The adapting mechanism (2) comprises a limit assembly and a side rod (23); the limit assembly is arranged on the top of the mounting seat (1); and the side rod (23) is fixedly mounted on both ends of the mounting seat (1).

9. The lost foam casting A-size controllable positioning device according to claim 8, characterized in that: The limiting component comprises a first through hole (21), the first through hole (21) is formed on the top of the mounting seat (1), and a second through hole (22) is also formed on the top of the mounting seat (1).

10. The lost foam casting A-size controllable positioning device according to claim 1, characterized in that: A bottom box (5) is bolted to the bottom of the mounting seat (1), and a mold body (6) is placed on the top of the mounting seat (1).

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