Processing fixture for auxiliary jigs for MIM green production

Abstract

The present invention relates to a processing fixture for auxiliary jigs used in MIM green body production, and belongs to the technical field of MIM production and processing equipment. It is mainly aimed at the problem that the guide posts provided on the upper mold body and the guide holes provided on the lower mold body of some existing auxiliary jigs in MIM production and processing need to be aligned with each other, and thus need to be measured separately, which increases the difficulty of processing and the processing error caused by measurement errors. The following technical scheme is proposed: it includes an upper mold body and a lower mold body, and the base also includes a base, and the base is internally rotatably connected with a pair of adjustable shafts, each of the two ends of the adjustable shaft is sleeved with a sleeve, and one of the adjustable shafts is threadedly connected with the two sleeves thereon. The present application can fix the lower mold body and the upper mold body at the same time through the design of the base, that is, the structures thereon, and can improve the fixing efficiency while allowing the lower mold body and the upper mold body to be automatically aligned, and the guide posts and guide holes can be aligned up and down without measurement, thereby improving the processing efficiency of the auxiliary jig.

Description

Technical Field

[0001] The invention relates to the technical field of MIM production and processing equipment, and in particular to a processing fixture of an auxiliary tool for MIM green body production. Background Art

[0002] MIM is metal injection molding, which uses MIM to initially produce green blanks, and then polishes, reshapes and other secondary processes to form finished products. Relevant auxiliary jigs are required in both the initial and secondary processing processes. For example, the MIM metal parts shaping jig disclosed in the Chinese patent with announcement number CN214719915U is an auxiliary jig used for shaping. The auxiliary jig is divided into an upper mold body and a lower mold body. The upper and lower mold bodies are fixed by different fixtures during the production and processing. Since the guide posts set on the upper mold body and the guide holes opened on the lower mold body need to be aligned with each other, when different fixtures are used to fix them separately, the positions of the guide posts and guide holes on the upper and lower mold bodies need to be measured separately, which increases the difficulty of processing and the processing error caused by measurement errors. Summary of the invention

[0003] The purpose of the present invention is to divide the auxiliary jigs in some existing MIM production and processing mentioned in the background technology into an upper mold body and a lower mold body. The upper and lower mold bodies are fixed by different clamps respectively during the production and processing. Since the guide columns arranged on the upper mold body and the guide holes opened on the lower mold body need to be aligned with each other, when different clamps are used to fix them respectively, it is necessary to measure the positions of the guide columns and guide holes on the upper and lower mold bodies respectively, which increases the processing difficulty and the problem of processing errors caused by measurement errors. A processing fixture for auxiliary jigs for MIM green production is proposed.

[0004] The technical solution of the present invention: a processing fixture of an auxiliary jig for MIM green body production, comprising an upper mold body and a lower mold body, and also comprising a base, wherein a pair of adjustable shafts are rotatably connected inside the base, and each of the two ends of the adjustable shaft is sleeved with a shaft sleeve, and one of the adjustable shafts is threadedly screwed with two shaft sleeves thereon, and the upper surface of each shaft sleeve is fixedly connected with a vertical sleeve shaft, and the top outer wall of each vertical sleeve shaft is fixedly connected with a first clamping block capable of clamping the edge surface of the lower mold body, and the top of each vertical sleeve shaft can be lifted and lowered with a vertical shaft, and the top outer wall of each vertical shaft is fixedly connected with a second clamping block capable of clamping the edge surface of the upper mold body, and the top of the vertical shaft is connected with a mounting plate for installing processing equipment.

[0005] Preferably, the mounting plate comprises a first mounting bar and a second mounting bar, the end of the first mounting bar is fixedly connected to a guide shaft, and the end of the second mounting bar is provided with a guide groove matching the guide shaft.

[0006] Preferably, an outer surface of one of the vertical shafts is provided with an external thread which can be screwed together with an internal thread provided in a vertical sleeve shaft at a corresponding position.

[0007] Preferably, a guide column is fixedly connected to the lower surface of the upper mold body, and a guide hole matching the size and corresponding to the position of the guide column is opened on the upper surface of the lower mold body.

[0008] Preferably, the guide column and the guide hole are positioned by a positioning assembly, and the positioning assembly includes a rotating ring movably sleeved on the vertical sleeve shaft, the outer wall of the rotating ring is fixedly connected to a connecting shaft, the top of the connecting shaft is fixedly connected to a sleeve, the top end of the sleeve is movably sleeved with an upper positioning column that can be sleeved on the bottom end of the guide column, and the bottom end of the sleeve is movably sleeved with a lower positioning column for drawing a guide hole.

[0009] Preferably, the diameter of the lower positioning column is equal to the diameter of the guide hole.

[0010] Preferably, a rubber ring for increasing the friction between the lower positioning column and the sleeve is fixedly sleeved on the top end of the lower positioning column.

[0011] Preferably, an anti-slip ring is fixedly provided on the outer wall of the vertical sleeve shaft and located above and below the rotating ring respectively.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1): The present application can quickly clamp and fix the auxiliary fixture through the design of the base and the various structures thereon, which is easy to operate and has high clamping efficiency.

[0014] (2): The present application can fix the lower mold body and the upper mold body at the same time through the design of the vertical sleeve shaft and the vertical shaft structure, thereby improving the fixing efficiency and automatically aligning the lower mold body and the upper mold body. The guide column and the guide hole can be aligned up and down without measurement, thereby improving the processing efficiency of the auxiliary fixture;

[0015] (3): The present application can automatically align the guide post and the guide hole through the design of the rotating ring and related structures, and can automatically draw the position of the guide hole according to the position of the guide post without measurement, and the size of the drawn guide hole matches the guide post. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the processing fixture that only clamps the lower mold body;

[0017] Figure 2 This is a schematic diagram of the structure of the processing fixture that simultaneously clamps the upper mold body and the lower mold body;

[0018] Figure 3 It is a schematic diagram of the connection between the upper mold body, the lower mold body and the positioning assembly;

[0019] Figure 4 A cross-sectional view of the positioning assembly.

[0020] Reference numerals: 1, base; 11, adjustable distance shaft; 12, shaft sleeve; 13, vertical sleeve shaft; 131, first clamping block; 14, vertical shaft; 141, second clamping block; 15, mounting plate; 151, first mounting bar; 1511, guide shaft; 152, second mounting bar; 1521, guide groove; 16, rotating ring; 161, connecting shaft; 162, sleeve; 163, lower positioning column; 164, upper positioning column; 165, anti-slip ring; 166, rubber ring;

[0021] 2. Upper mold body; 21. Guide column;

[0022] 3. Lower mold body; 31. Guide hole. DETAILED DESCRIPTION

[0023] The following description is merely exemplary in nature and is not intended to limit the present application, application, and use. It should be understood that in all of these drawings, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present application, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present application. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present application.

[0024] Embodiment 1

[0025] like Figure 1-3 As shown, the processing fixture of the auxiliary tool for MIM green body production proposed by the present invention.

[0026] like Figure 1 As shown, it includes an upper mold body 2 and a lower mold body 3 for shaping in the MIM green body production process. It also includes a base 1, and a pair of adjustable shafts 11 are rotatably connected inside the base 1. Both ends of each adjustable shaft 11 are sleeved with a sleeve 12, and one of the adjustable shafts 11 is threadedly screwed with the two sleeves 12 thereon. A vertical sleeve shaft 13 is fixedly connected to the upper surface of each sleeve 12, and the top outer wall of each vertical sleeve shaft 13 is fixedly connected with a first clamping block 131 that can clamp the edge surface of the lower mold body 3. A vertical shaft 14 is movably sleeved on the top of each vertical sleeve shaft 13, and the outer surface of one of the vertical shafts 14 is provided with an external thread and can be screwed with the internal thread provided in the vertical sleeve shaft 13 at the corresponding position, and the top outer wall of each vertical shaft 14 is fixedly connected with a second clamping block 141 that can clamp the edge surface of the upper mold body 2.

[0027] like Figure 1As shown, the top end of the vertical shaft 14 is connected with a mounting plate 15, and the mounting plate 15 is used to install the equipment of the processing auxiliary fixture, and the mounting method can be connected by bolts. The mounting plate 15 includes a first mounting bar 151 and a second mounting bar 152, and the end of the first mounting bar 151 is fixedly connected with a guide shaft 1511, and the end of the second mounting bar 152 is provided with a guide groove 1521 matching the guide shaft 1511.

[0028] The working principle of this embodiment is: when clamping the upper mold body 2 or the lower mold body 3, the upper mold body 2 and the lower mold body 3 can be clamped on the clamp at the same time, or the upper mold body 2 and the lower mold body 3 can be clamped on the clamp separately.

[0029] When the fixture only clamps the upper mold body 2 or the lower mold body 3, as shown in Figure 1 As shown (the figure takes the clamping of the lower mold body 3 as an example for explanation), the lower mold body 3 is placed Figure 1 The position shown is then shown, and the single distance adjusting shaft 11 with threads is rotated, and the two shaft sleeves 12 are caused to move in opposite directions through the threaded screw connection, thereby driving the vertical sleeve shafts 13 at the front and rear positions to move closer to each other, so that the first clamping block 131 can clamp the edge surface of the lower mold body 3 to achieve clamping of the lower mold body 3;

[0030] When the fixture clamps the upper mold body 2 and the lower mold body 3 at the same time, Figure 2 As shown, the upper mold body 2 and the lower mold body 3 are placed in the positions shown in the figure respectively, and then when the distance adjusting shaft 11 is rotated to drive the vertical sleeve shaft 13 at the front and rear positions to move closer to each other, the vertical shaft 14 at the front and rear positions will be driven to move closer to each other, so that the second clamping block 141 can clamp the edge surface of the upper mold body 2. In summary, the upper mold body 2 and the lower mold body 3 can be clamped at the same time, and the welding machine and other processing auxiliary fixtures are installed on the mounting plate 15 by bolts, and then the upper mold body 2 or lower mold body 3 below can be processed.

[0031] Embodiment 2

[0032] like Figure 1-3As shown, the processing fixture of the auxiliary jig for MIM green body production proposed by the present invention includes an upper mold body 2 and a lower mold body 3 for shaping in the process of MIM green body production. It also includes a base 1, and a pair of adjustable shafts 11 are rotatably connected inside the base 1, and a sleeve 12 is sleeved at both ends of each adjustable shaft 11, and one of the adjustable shafts 11 is threadedly screwed with the two sleeves 12 thereon. A vertical sleeve shaft 13 is fixedly connected to the upper surface of each sleeve 12, and the top outer wall of each vertical sleeve shaft 13 is fixedly connected to a first clamping block 131 that can clamp the edge surface of the lower mold body 3, and a vertical shaft 14 is movably sleeved on the top of each vertical sleeve shaft 13, and the outer surface of one of the vertical shafts 14 is provided with an external thread and can be screwed with the internal thread provided in the vertical sleeve shaft 13 at the corresponding position, and the top outer wall of each vertical shaft 14 is fixedly connected to a second clamping block 141 that can clamp the edge surface of the upper mold body 2. The top of the vertical shaft 14 is connected with a mounting plate 15, which is used to install the equipment of the auxiliary processing fixture, and the mounting method can be connected by bolts. The mounting plate 15 includes a first mounting bar 151 and a second mounting bar 152. The end of the first mounting bar 151 is fixedly connected with a guide shaft 1511, and the end of the second mounting bar 152 is provided with a guide groove 1521 matching the guide shaft 1511.

[0033] Compared with the first embodiment, this embodiment further includes:

[0034] like Figure 2-3 As shown, a guide column 21 is fixedly connected to the four corners of the lower surface of the upper mold body 2, and a guide hole 31 matching the size and corresponding to the position of the guide column 21 is opened at the four corners of the upper surface of the lower mold body 3.

[0035] like Figure 3-4 As shown, the guide column 21 and the guide hole 31 are positioned by a positioning assembly, and the positioning assembly includes a rotating ring 16 movably sleeved on the vertical sleeve shaft 13, and an anti-slip ring 165 is fixedly sleeved on the outer wall of the vertical sleeve shaft 13 and located at the upper and lower parts of the rotating ring 16. The outer wall of the rotating ring 16 is fixedly connected with a connecting shaft 161, and the top of the connecting shaft 161 is fixedly connected with a sleeve 162, and the top of the sleeve 162 is movably sleeved with an upper positioning column 164 that can be sleeved on the bottom end of the guide column 21, and the bottom of the sleeve 162 is movably sleeved with a lower positioning column 163 for drawing the guide hole 31, and the diameter of the lower positioning column 163 is equal to the aperture of the guide hole 31, and the top of the lower positioning column 163 is fixedly sleeved with a rubber ring 166 for increasing the friction between the lower positioning column 163 and the sleeve 162.

[0036] The working principle of this embodiment is: when the upper mold body 2 and the lower mold body 3 are Figure 2When the upper and lower parts are aligned as shown, the positioning assembly can be rotated to the position shown in the figure, and the guide column 21 and the guide hole 31 can be vertically positioned by the positioning assembly, that is, the position of the guide hole 31 can be automatically positioned according to the position of the guide column 21, without additional measurement. Specifically, the rotating ring 16 is rotated, and the rotating ring 16 drives the sleeve 162 to rotate to the middle position between the upper mold body 2 and the lower mold body 3 through the connecting shaft 161, and then the upper positioning column 164 is moved upward, so that the top end of the upper positioning column 164 is sleeved on the bottom end position of the guide column 21, and then the lower positioning column 163 is moved downward. Since the lower positioning column 163 and the upper positioning column 164 are in a colinear state, the contact position between the bottom end of the lower positioning column 163 and the upper surface of the lower mold body 3 represents the position of the guide hole 31. Since the diameter of the lower positioning column 163 is the same as the aperture of the guide hole 31, when the lower positioning column 163 is a painting tool such as a brush or a crayon, the path of the guide hole 31 can be automatically printed, and then the guide hole 31 can be cut out along the path using a cutting tool. A cutting tool such as a miniature laser cutting machine may also be directly installed in the sleeve 162 to directly cut out the guide hole 31 without drawing lines. The specific method may be selected according to actual needs.

[0037] The exemplary implementation scheme of the scheme proposed in the present application is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present application, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present application can be combined in various ways without exceeding the protection scope of the present application, which is determined by the attached claims.

Claims

1. A processing fixture for auxiliary jigs used for MIM green production, the auxiliary jigs include an upper mold body and a lower mold body, characterized in that: The processing fixture includes a base, a pair of adjustable shafts are rotatably connected inside the base, both ends of each adjustable shaft are sleeved with a sleeve, and one of the adjustable shafts is threadedly screwed with two sleeves thereon, the upper surface of each sleeve is fixedly connected with a vertical sleeve shaft, the top outer wall of each vertical sleeve shaft is fixedly connected with a first clamping block capable of clamping the edge surface of the lower mold body, the top of each vertical sleeve shaft can be lifted and sleeved with a vertical shaft, the top outer wall of each vertical shaft is fixedly connected with a second clamping block capable of clamping the edge surface of the upper mold body, and the top of the vertical shaft is connected There is a mounting plate for installing processing equipment; a guide column is fixedly connected to the lower surface of the upper mold body, and a guide hole matching the size and corresponding to the position of the guide column is opened on the upper surface of the processed lower mold body; the guide column and the guide hole are positioned by a positioning assembly, and the positioning assembly includes a rotating ring movably sleeved on the vertical sleeve shaft, the outer wall of the rotating ring is fixedly connected to a connecting shaft, the top end of the connecting shaft is fixedly connected to a sleeve, the top end of the sleeve is movably sleeved with an upper positioning column that can be sleeved on the bottom end of the guide column, and the bottom end of the sleeve is movably sleeved with a lower positioning column for drawing a guide hole.

2. The processing fixture of the auxiliary jig for MIM green production according to claim 1 is characterized in that: The mounting plate includes a first mounting bar and a second mounting bar. The end of the first mounting bar is fixedly connected to a guide shaft, and the end of the second mounting bar is provided with a guide groove matching the guide shaft.

3. The processing fixture of the auxiliary jig for MIM green production according to claim 2 is characterized in that: An outer surface of one of the vertical shafts is provided with an external thread which can be screwed together with an internal thread provided in a vertical sleeve shaft at a corresponding position.

4. The processing fixture of the auxiliary jig for MIM green production according to claim 1, characterized in that: The diameter of the lower positioning column is equal to the diameter of the guide hole.

5. The processing fixture of the auxiliary jig for MIM green production according to claim 4, characterized in that: The top end of the lower positioning column is fixedly sleeved with a rubber ring for increasing the friction between the lower positioning column and the sleeve.

6. The processing fixture of the auxiliary jig for MIM green production according to claim 5, characterized in that: The outer wall of the vertical sleeve shaft is respectively located above and below the rotating ring and is fixedly sleeved with an anti-slip ring.

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