Stable die casting fixing device

Abstract

The utility model discloses a stable die casting fixing device, and relates to the field of machining. The device comprises an installation base, a first pressing mechanism and a plurality of positioning mechanisms installed on the two sides of the first pressing mechanism. The first pressing mechanism is fixed to the top of the mounting base, and the pressing face of the first pressing mechanism abuts against the top face of the die casting main body. The positioning mechanism comprises a jacking air cylinder, a sleeve and a floating positioning pin assembly, the outer side wall of a piston rod of the jacking air cylinder is sleeved with the sleeve, and the bottom face of the die casting main body abuts against the top face of the sleeve; the bottom of the floating positioning pin assembly is connected with the piston rod, and the top of the floating positioning pin assembly extends to the position above the sleeve to be inserted into the pre-casting hole. The floating positioning pin assembly can be inserted into the pre-casting hole of the die casting main body to position the die casting, and the die casting is stably clamped between the positioning mechanism and the pressing mechanism through downward pressing force applied by the first pressing mechanism, so that the die casting is prevented from sliding, and the machining precision in the machining process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, and more specifically to a stable die-casting part fixing device. Background Art

[0002] Die casting, also known as pressure casting, is a method in which liquid or semi-liquid metal is filled into the cavity of a die-casting mold at a relatively high speed under high pressure and is formed and solidified under pressure to obtain a casting. After the die-casting part is formed, it also needs to undergo subsequent treatments such as cleaning and machining.

[0003] During the machining process of die-casting parts, the die-casting parts need to be fixed by a die-casting part fixing device before machining. The die-casting part fixing devices in the prior art usually clamp both ends of the die-casting part. For example, the utility model patent with the application number CN202221418016.0 discloses a fixing device for grinding metal die-casting parts, which mainly clamps both ends of the die-casting part by two U-shaped mounting frames respectively, so as to fix the die-casting part. However, only clamping the ends of the die-casting part, during the machining process, the die-casting part vibrates and is prone to sliding, affecting the machining accuracy. Especially for some die-casting parts with irregular shapes or uneven clamping and fixing surfaces, it is impossible to complete the fixing well, which has limitations.

[0004] Therefore, how to provide a fixing device that can firmly fix die-casting parts is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model

[0005] In view of this, the utility model aims to provide a stable die-casting part fixing device to at least to some extent solve the problem that the die-casting parts in the prior art are not firmly fixed and affect the machining accuracy.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A stable die-casting part fixing device, the die-casting part includes a die-casting part main body, and a plurality of pre-casting holes are opened at the bottom of the die-casting part main body. It is characterized in that it includes: a mounting base, a first pressing mechanism, and a plurality of positioning mechanisms installed on both sides of the first pressing mechanism; the first pressing mechanism is fixed on the top of the mounting base, and the pressing surface of the first pressing mechanism abuts against the top surface of the die-casting part main body;

[0008] Each positioning mechanism includes a lifting cylinder, a sleeve, and a floating positioning pin assembly. The cylinder body of the lifting cylinder is fixed on the mounting base, the sleeve is sleeved on the outer side wall of the piston rod of the lifting cylinder, and the bottom surface of the die-casting part main body abuts against the top surface of the sleeve; the floating positioning pin assembly is placed in the inner cavity of the sleeve, the bottom is connected to the piston rod of the lifting cylinder, and the top extends above the sleeve to be inserted into the pre-casting hole.

[0009] The beneficial effects that the present utility model can achieve are as follows: The floating positioning pin assembly on the positioning mechanism can be inserted into the pre-cast hole of the die-cast part to position the die-cast part, and through the downward pressing force applied by the first pressing mechanism, the main body of the die-cast part is firmly clamped between the positioning mechanism and the pressing mechanism. This device can achieve multiple horizontal and vertical positioning of the die-cast part, prevent the die-cast part from sliding, and ensure the machining accuracy during the machining process.

[0010] Multiple positioning mechanisms are distributed on both sides of the first pressing mechanism. The two sides of the die-cast part are supported upward by the positioning mechanism, and the middle part is pressed downward by the first pressing mechanism, so that the die-cast part is fastened. By setting the elastic telescopic pin, its length can be adjusted, and it can be inserted into the pre-cast holes with different depths to ensure that the die-cast part abuts against the top surface of the sleeve, preventing the die-cast part from tilting due to insecure installation.

[0011] Preferably, the mounting seat includes a lower mounting plate, an upper mounting plate, and multiple support rods. The upper mounting plate is arranged parallel to the lower mounting plate, and multiple support rods are all vertically arranged on the top surface of the lower mounting plate and installed between the lower mounting plate and the upper mounting plate.

[0012] Preferably, the first pressing mechanism includes a downward pressing cylinder and a first pressing plate. The cylinder body of the downward pressing cylinder is fixed on the upper mounting plate. The first pressing plate is arranged parallel to the plate surface of the upper mounting plate and is connected to the top of the piston rod of the downward pressing cylinder. The bottom surface of the first pressing plate is its pressing surface.

[0013] Preferably, the cylinder body of the jacking cylinder is fixed on the bottom surface of the upper mounting plate, and its piston rod is vertically arranged with respect to the upper mounting plate and extends through the upper mounting plate towards the direction close to the first pressing plate.

[0014] Preferably, the floating positioning pin assembly includes a positioning seat, a compression spring, and a positioning pin. The positioning seat is sleeved in the inner cavity of the sleeve, and its bottom is connected to the piston rod of the jacking cylinder. A blind hole coaxial with the piston rod of the jacking cylinder is opened at the top. The compression spring is placed in the blind hole. The lower end of the positioning pin slides axially along the piston rod of the jacking cylinder and is inserted into the blind hole, and its bottom abuts against the compression spring, and the top can extend above the corresponding sleeve to be inserted into the pre-cast hole.

[0015] Preferably, the upper end of the positioning pin is conical.

[0016] Preferably, a limit pin is further provided. An installation hole is formed in the side wall of the positioning seat, which is arranged along the radial direction of the blind hole and communicates with the blind hole. The limit pin is fixed in the installation hole. A long strip-shaped sliding hole is formed at the lower end of the positioning pin, and the length direction of the sliding hole is arranged along the axial direction of the blind hole and can be slidably matched with the limit pin.

[0017] Preferably, an auxiliary clamping assembly is further included. The auxiliary clamping assembly includes a second pressing mechanism fixed on the top of the upper mounting plate and a plurality of support columns. One side of the die-casting main body is provided with a die-casting extension part integrally connected thereto. The plurality of support columns are arranged perpendicular to the plate surface of the upper mounting plate and are arranged on both sides of the second pressing mechanism; the bottom surface of the die-casting extension part abuts against the plurality of support columns, and the top surface abuts against the pressing surface of the second pressing mechanism.

[0018] Preferably, the second pressing mechanism includes two vertical supports, a second pressing plate, two screw rods and two adjusting nuts. The two vertical supports are both arranged perpendicular to the plate surface of the upper mounting plate and are respectively fixed on the top surfaces of the upper mounting plate on both sides of the die-casting extension part. The second pressing plate is arranged parallel to the plate surface of the upper mounting plate and corresponds to the upper part of the two vertical supports, and the bottom surface of the second pressing plate is its pressing surface; the two screw rods are respectively connected to the tops of the two vertical supports, and their tops pass through the second pressing plate and are threadedly connected to the adjusting nuts.

[0019] Preferably, the two vertical supports have the same height.

[0020] Through the above technical solutions, compared with the prior art, the present utility model discloses a stable die-casting fixing device, which has the following beneficial effects:

[0021] 1. The positioning mechanism and the first pressing mechanism can position and clamp the die-casting main body, improve the stability in the die-casting fixing process, prevent the die-casting from sliding, and are beneficial to ensuring the processing accuracy.

[0022] 2. The positioning pin of the floating positioning pin assembly can slide in the sleeve, can adapt to pre-cast holes of different depths, and prevent the bottom of the die-casting from being fixed insecurely and tilting.

[0023] 3. The auxiliary clamping assembly is provided to fix the extension part of the die-casting with a longer size, and prevent the die-casting extension part far from the first pressing mechanism from shaking during the processing. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0025] Figure 1 FIG. is a schematic structural view of the use state of a stable die-casting fixing device provided by the present invention.

[0026] Figure 2 FIG. is a schematic structural view of an angle of a stable die-casting fixing device provided by the present invention.

[0027] Figure 3 FIG. is a schematic structural view of another angle of a stable die-casting fixing device provided by the present invention.

[0028] Figure 4 FIG. is a schematic structural view of the positioning mechanism provided by the present invention.

[0029] Figure 5 FIG. is an exploded structural view of the positioning mechanism provided by the present invention when the sleeve is removed.

[0030] In the figure:

[0031] 1. Mounting base, 11. Lower mounting plate, 12. Upper mounting plate, 13. Multiple support rods, 2. First pressing mechanism, 21. Lower pressing cylinder, 22. First pressing plate, 3. Positioning mechanism, 31. Lifting cylinder, 32. Sleeve, 33. Floating positioning pin assembly, 331. Positioning seat, 3311. Blind hole, 332. Compression spring, 333. Positioning pin, 3331. Long strip-shaped sliding hole, 334. Limit pin, 4. Second pressing mechanism, 41. Vertical support, 42. Second pressing plate, 43. Screw rod, 44. Adjusting nut, 5. Support column, 6. Die-casting part, 61. Die-casting part main body, 62. Die-casting part extension. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0034] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] Please refer to Figures 1 - 5 , the embodiment of the present utility model discloses a stable die-casting fixing device. The die-casting 6 includes a die-casting main body 61, and a plurality of pre-casting holes are opened at the bottom of the die-casting main body 61, including: a mounting base 1, a first pressing mechanism 2, and a plurality of positioning mechanisms 3 installed on both sides of the first pressing mechanism 2; the first pressing mechanism 2 is fixed on the top of the mounting base 1, and the pressing surface of the first pressing mechanism 2 abuts against the top surface of the die-casting main body 61;

[0037] Each positioning mechanism 3 includes a lifting cylinder 31, a sleeve 32, and a floating positioning pin assembly 33. The cylinder body of the lifting cylinder 31 is fixed on the mounting base 1, the sleeve 32 is sleeved on the outer side wall of the piston rod of the lifting cylinder 31, and the bottom surface of the die-casting main body 61 abuts against the top surface of the sleeve 32; the floating positioning pin assembly 33 is placed in the inner cavity of the sleeve 32, connected to the piston rod at the bottom, and extends above the sleeve 32 at the top to be inserted into the pre-casting hole.

[0038] The floating positioning pin assembly 33 on the positioning mechanism 3 can be inserted into the pre-casting hole of the die-casting main body 61, position the die-casting main body 61, and through the downward pressing force applied by the first pressing mechanism 2, the die-casting main body 61 is firmly clamped between the positioning mechanism 3 and the pressing mechanism. This device can achieve multiple horizontal and vertical positioning of the die-casting 6, prevent the die-casting 6 from sliding, and ensure the processing accuracy during the processing.

[0039] Specifically, as Figure 2As shown, the mounting base 1 includes a lower mounting plate 11, an upper mounting plate 12, and multiple support rods 13. The upper mounting plate 12 is arranged parallel to the lower mounting plate 11, and the multiple support rods 13 are all vertically arranged on the top surface of the lower mounting plate 11 and installed between the lower mounting plate 11 and the upper mounting plate 12; the cylinder block of the lifting cylinder 31 is fixed on the bottom surface of the upper mounting plate 12, and its piston rod is perpendicular to the plate surface of the upper mounting plate 12 and penetrates through the upper mounting plate 12, providing an installation space for the lifting cylinder 31.

[0040] Specifically, the first pressing mechanism 2 includes a lower pressing cylinder 21 and a first pressing plate 22. The cylinder block of the lower pressing cylinder 21 is fixed on the upper mounting plate 12. The pressing plate is arranged parallel to the plate surface of the upper mounting plate 12 and is connected to the top of the piston rod of the lower pressing cylinder 21. The bottom surface of the first pressing plate 22 is its pressing surface. The lower pressing cylinder 21 drives the first pressing plate 22 to move up and down to press the main body 61 of the die-casting part.

[0041] Specifically, referring to Figure 5 , the floating positioning pin assembly 33 includes a positioning seat 331, a compression spring 332, and a positioning pin 333. The positioning seat 331 is sleeved in the inner cavity of the sleeve 32, its bottom is connected to the piston rod, and a blind hole 3311 coaxial with the piston rod of the lifting cylinder 31 is opened at the top; the compression spring 332 is placed in the blind hole 3311. The lower end of the positioning pin 333 slides axially along the piston rod of the lifting cylinder 31 and is inserted into the blind hole 3311, and its bottom abuts against the compression spring 332, and the top can extend above the corresponding sleeve 32 to be inserted into the pre-cast hole. Through the action of the spring, the positioning pin 333 can slide in the blind hole 3311 and can be inserted into pre-cast holes with different depths, ensuring that the bottom surface of the main body 61 of the die-casting part abuts against the top surface of the sleeve 32 and preventing the main body 61 of the die-casting part from being loosely installed and tilting.

[0042] Specifically, the upper end of the positioning pin 333 is conical, which is convenient for inserting into the pre-cast hole and can also adapt to pre-cast holes with different inner diameters.

[0043] Specifically, a limit pin 334 is also provided. An installation hole arranged in the radial direction of the blind hole 3311 and communicating with the blind hole 3311 is opened on the side wall of the positioning seat 331. The limit pin 334 is fixed in the installation hole. A long strip-shaped sliding hole 3331 with a length direction arranged along the axial direction of the blind hole 3311 and slidably matched with the limit pin 334 is opened at the lower end of the positioning pin 333. Under the action of the limit pin 334, the positioning pin 333 can stably slide in the blind hole 3311 and can prevent the positioning pin from popping out in the blind hole 3311.

[0044] Embodiment 2:

[0045] As Figures 1 - 3This embodiment is suitable for fixing die castings with longer dimensions. This embodiment is improved on the basis of embodiment 1. A die casting extension part 62 integrally connected to the die casting body 61 is provided on one side thereof, and the die casting extension part 62 may not be provided with a precast hole. Therefore, an auxiliary clamping assembly is also provided. The auxiliary clamping assembly includes a second clamping mechanism 4 fixed on the top of the upper mounting plate 12 and a plurality of support columns 5. The plurality of support columns 5 are arranged perpendicular to the surface of the upper mounting plate 12 and are arranged on both sides of the second clamping mechanism 4. The bottom surface of the die casting extension part 62 abuts against the plurality of support columns 5, and the top surface abuts against the clamping surface of the second clamping mechanism 4. It plays an auxiliary fixing role for the die casting extension part 62, and prevents the die casting extension part 62 away from the first clamping mechanism 2 from shaking during processing.

[0046] Specifically, the second clamping mechanism 4 includes two uprights 41, a second pressing plate 42, two screws 43 and two adjusting nuts 44. The two uprights 41 are arranged perpendicular to the surface of the upper mounting plate 12 and are respectively fixed on the top surface of the upper mounting plate 12 on both sides of the die casting extension 62. The second pressing plate 42 is arranged parallel to the surface of the upper mounting plate 12 and corresponds to the top of the two uprights 41, and the bottom surface of the second pressing plate 42 is its clamping surface; the two screws are respectively connected to the top of the two uprights, and the tops thereof pass through the second pressing plate 42 and are threadedly connected to the adjusting nuts 44. By screwing the adjusting nuts 44, the height of the second pressing plate 42 can be adjusted to adapt to the die casting extension 62 of different sizes.

[0047] Specifically, the two upright supports 41 have the same height.

[0048] When in use, rotate the first pressing plate 22 to the side away from the lifting cylinder 31, place the die-casting 6, insert the positioning pin 333 into the pre-casting hole, and ensure that the top surface of the sleeve 32 is in contact with the bottom surface of the die-casting body 61, rotate the first pressing plate 22 to above the die-casting body 61, and lock the first pressing plate 22 and the piston rod of the pressing cylinder 21, adjust the piston rod of the pressing cylinder 21 to press the first pressing plate 22 onto the top surface of the die-casting body 61.

[0049] If the die-casting 6 is longer, first place the die-casting extension 62 on the support column 5, then adjust the angle of the die-casting 6, and adjust the lifting cylinder 31 so that the positioning pin 333 can be inserted into the pre-casting hole. After the bottom positioning of the die-casting body 61 is completed, adjust the first clamping mechanism 2 and the second clamping mechanism 4 to clamp and fix the die-casting 6.

[0050] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0051] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stable die casting fixing device, wherein the die casting (6) comprises a die casting body (61), and a plurality of precast holes are opened at the bottom of the die casting body (61), characterized in that: include: A mounting seat (1), a first clamping mechanism (2), and a plurality of positioning mechanisms (3) mounted on both sides of the first clamping mechanism (2); the first clamping mechanism (2) is fixed on the top of the mounting seat (1) and the clamping surface of the first clamping mechanism (2) abuts against the top surface of the die casting body (61); Each of the positioning mechanisms (3) comprises a lifting cylinder (31), a sleeve (32) and a floating positioning pin assembly (33); the cylinder body of the lifting cylinder (31) is fixed on the mounting seat (1); the sleeve (32) is sleeved on the outer wall of the piston rod of the lifting cylinder (31); the bottom surface of the die-casting body (61) abuts against the top surface of the sleeve (32); the floating positioning pin assembly (33) is placed in the inner cavity of the sleeve (32) and is connected to the piston rod of the lifting cylinder (31) at the bottom, and extends to the top of the sleeve (32) to be inserted into the precast hole.

2. A stable die casting fixture according to claim 1, characterized in that: The mounting seat (1) comprises a lower mounting plate (11), an upper mounting plate (12) and a plurality of support rods (13); the upper mounting plate (12) is arranged in parallel with the lower mounting plate (11); the plurality of support rods (13) are arranged perpendicular to the top surface of the lower mounting plate (11) and are installed between the lower mounting plate (11) and the upper mounting plate (12); the cylinder body of the lifting cylinder (31) is fixed on the bottom surface of the upper mounting plate (12); its piston rod is arranged perpendicular to the plate surface of the upper mounting plate (12) and penetrates the upper mounting plate (12).

3. A stable die casting fixture according to claim 2, characterized in that: The first clamping mechanism (2) comprises a downward pressing cylinder (21) and a first pressing plate (22); the cylinder body of the downward pressing cylinder (21) is fixed on the upper mounting plate (12); the first pressing plate (22) is arranged parallel to the plate surface of the upper mounting plate (12) and is connected to the top of the piston rod of the downward pressing cylinder (21); the bottom surface of the first pressing plate (22) is its clamping surface.

4. A stable die casting fixture according to claim 1, characterized in that: The floating positioning pin assembly (33) comprises a positioning seat (331), a compression spring (332) and a positioning pin (333); the positioning seat (331) is sleeved in the inner cavity of the sleeve (32) and its bottom is connected to the piston rod of the lifting cylinder (31), and a blind hole (3311) is opened on the top and is coaxially arranged with the piston rod of the lifting cylinder (31); the compression spring (332) is placed in the blind hole (3311), and the lower end of the positioning pin (333) is slidably inserted into the blind hole (3311) along the axial direction of the piston rod of the lifting cylinder (31), and its bottom is in contact with the compression spring (332), and the top can extend to the top of the corresponding sleeve (32) to be inserted into the precast hole.

5. A stable die casting fixture according to claim 4, characterized in that: The upper end of the positioning pin (333) is tapered.

6. A stable die casting fixture according to claim 4, characterized in that: A limit pin (334) is also provided. A mounting hole arranged along the radial direction of the blind hole (3311) and connected to the blind hole (3311) is provided on the side wall of the positioning seat (331). The limit pin (334) is fixed in the mounting hole. A long strip sliding hole (3331) is provided at the lower end of the positioning pin (333). The long direction of the long strip sliding hole (3331) is arranged along the axial direction of the blind hole (3311) and can be slidably matched with the limit pin (334).

7. A stable die casting fixture according to claim 2, characterized in that: An auxiliary clamping assembly is also provided, which includes a second clamping mechanism (4) fixed to the top of the upper mounting plate (12) and a plurality of support columns (5); one side of the die-casting body (61) is provided with a die-casting extension portion (62) integrally connected thereto; the plurality of support columns (5) are arranged perpendicular to the surface of the upper mounting plate (12) and are arranged on both sides of the second clamping mechanism (4); the bottom surface of the die-casting extension portion (62) abuts against the plurality of support columns (5), and the top surface abuts against the clamping surface of the second clamping mechanism (4).

8. A stable die casting fixture according to claim 7, characterized in that: The second clamping mechanism (4) includes two upright supports (41), a second pressure plate (42), two screw rods (43) and two adjusting nuts (44); the two upright supports (41) are arranged perpendicular to the surface of the upper mounting plate (12) and are respectively fixed on the top surface of the upper mounting plate (12) on both sides of the die-cast extension portion (62); the second pressure plate (42) is arranged parallel to the surface of the upper mounting plate (12) and corresponds to the top of the two upright supports (41), and the bottom surface of the second pressure plate (42) is its clamping surface; the two screw rods are respectively connected to the top of the two upright supports, and their tops pass through the second pressure plate (42) and are threadedly connected to the adjusting nuts (44).

9. A stable die casting fixture according to claim 8, characterized in that: The two upright supports (41) have the same height.

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