Sintering jig for watchband head particles

Abstract

The sintering jig comprises a jig body, a first limiting groove and a second limiting groove which are communicated with each other are formed in the two adjacent sides of the jig body respectively, the first limiting groove is formed in the top of the jig body, two supporting parts are formed in the two opposite sides of the second limiting groove respectively, and the first limiting groove and the second limiting groove are communicated with each other. The two supporting parts are both located on one side of the first limiting groove, and the sides, close to the first limiting groove, of the supporting parts are provided with inclined faces. The sintering jig disclosed by the utility model has an excellent supporting effect on the watchband head particles with special-shaped structures, and can prevent the watchband head particles from shifting in the transferring and sintering processes through the first limiting groove and the second limiting groove, so that the probability of distortion and deformation of the watchband head particles in the sintering process is reduced, and the sintering quality of the watchband head particles is improved. Therefore, the yield of sintering of the watchband head pellets is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy jigs for injection molding, in particular to a sintering jig for strap head particles. Background Art

[0002] Injection molding powder metallurgy (MIM) is a new type of metal parts forming technology that combines plastic molding technology, polymer chemistry, powder metallurgy and metal materials science. In recent years, the application of injection molding powder metallurgy technology has become more and more extensive.

[0003] like Figure 1 The watch strap head made of injection molding powder metallurgy shown has a first connection part for connecting to the middle frame of the watch and a second connection part for connecting to the watch strap. The first connection part is inclined relative to the main body of the watch strap head, so the watch strap head is a special-shaped structure as a whole. However, the existing sintering fixture has a relatively small support surface for the watch strap head with a special structure. During the sintering process of the green body of the watch strap head, the watch strap head will be deformed and twisted due to the small support surface, resulting in a low finished product yield of the watch strap head. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sintering fixture for watch strap head particles, so as to solve the problem that the existing sintering fixture cannot well support watch strap head particles with special-shaped structures, thus resulting in a low yield rate of watch strap head particles.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sintering jig for watch strap head particles, which includes a jig body, and the adjacent two sides of the jig body are respectively provided with a first limit groove and a second limit groove that are interconnected, the first limit groove is arranged at the top of the jig body, and two support parts are formed on the opposite sides of the second limit groove, and the two support parts are both located on one side of the first limit groove, and the support part is provided with an inclined surface on the side close to the first limit groove.

[0006] Furthermore, the first limiting groove is a through groove provided along the length direction of the fixture body.

[0007] Furthermore, the fixture body is provided with a plurality of the second limiting grooves spaced apart along its length direction.

[0008] Furthermore, the second limiting grooves are provided on two opposite sides of the fixture body.

[0009] Furthermore, the fixture body is provided with two first limiting grooves.

[0010] Furthermore, a limiting portion is provided on a side of the second limiting groove opposite to the supporting portion.

[0011] Furthermore, the width of the first limiting groove is 4.35-4.45 mm.

[0012] Furthermore, the inclination angle of the inclined surface relative to the horizontal direction is 145 degrees.

[0013] Furthermore, the first limiting groove is a through groove provided along the height direction of the fixture body.

[0014] Furthermore, the length of the second limiting groove is 14.45-14.55 mm.

[0015] The beneficial effect of the present invention is that the sintering jig described in the present invention can be applied to the sintering process of the watch strap head particles, and the inclined surface of the support part can play a good supporting role for the first connecting part inclinedly arranged on the watch strap head particles, so as to avoid the first connecting part of the watch strap head particles from collapsing during the sintering process; in addition, the first limiting groove and the second limiting groove can play a limiting and fixing role for the green body of the watch strap head particles during the sintering process, so as to avoid the green body of the watch strap head particles from shifting during the transfer or sintering process. The first limiting groove and the second limiting groove also increase the supporting area of ​​the sintering jig for the green body of the watch strap head particles, so that the green body of the watch strap is not easily twisted and deformed during the sintering process. The sintering jig provided by the present invention can ensure the molding effect of the outer contour of the sintered product of the watch strap head particles, and the sintering jig can improve the yield rate of the watch strap head particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the head grain of the strap;

[0017] Figure 2 It is a schematic structural diagram of the sintering jig of the utility model in one embodiment from a viewing angle;

[0018] Figure 3 It is a schematic structural diagram of the sintering jig of the utility model in another perspective in one embodiment;

[0019] Figure 4 This is a schematic diagram of the structure of the sintering jig of the utility model in use;

[0020] Description of labels:

[0021] 1. Fixture body;

[0022] 2. The first limiting groove;

[0023] 3. Second limit slot

[0024] 4. Support part;

[0025] 5. Inclined surface;

[0026] 6. Limiting part;

[0027] 7. strap head; 71. first connection part; 72. second connection part; 73. main body. DETAILED DESCRIPTION

[0028] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0029] Please refer to Figures 2 to 4 A sintering jig for strap head particles comprises a jig body 1, wherein two adjacent sides of the jig body 1 are respectively provided with a first limiting groove 2 and a second limiting groove 3 which are interconnected, wherein the first limiting groove 2 is provided at the top of the jig body 1, and two supporting portions 4 are respectively formed on opposite sides of the second limiting groove 3, and both supporting portions 4 are located on one side of the first limiting groove 2, and an inclined surface 5 is provided on the side of the supporting portion 4 close to the first limiting groove 2.

[0030] The structural principle of the utility model is briefly described as follows: The sintering fixture designed by the utility model can be used for Figure 1 In the injection molding powder metallurgy sintering process of the strap head particle 7 shown in FIG. Figure 4 As shown, in actual application, the main body 73 of the strap head particle 7 can be accommodated in the first limiting groove 2, and the second connection part 72 of the strap head particle 7 can be accommodated in the second limiting groove 3. Specifically, the width of the first limiting groove 2 can be set corresponding to the width of the main body 73 of the strap head particle 7, and the length of the second limiting groove 3 can be set corresponding to the length of the second connection part 72. In addition, the first connection part 71 of the strap head particle 7 which is inclined relative to its main body 73 can be placed on the inclined surface 5 of the support part 4, so as to provide good support to the first support part 4 through the inclined surface 5, thereby avoiding the first support part 4 collapses, the first limiting groove 2 of the sintering jig provided by the utility model can prevent the strap head particle 7 from being displaced in the width direction of the jig body 1 during the transfer or sintering process, the second limiting groove 3 can prevent the strap head particle 7 from being displaced in the length direction of the jig body 1 during the transfer or sintering process, and the first limiting groove 2, the second limiting groove 3 and the inclined surface 5 of the sintering jig can play a good supporting role for the strap head particle 7, so as to reduce the probability of the strap head particle 7 being twisted and deformed during the sintering process, thereby reducing the defective rate of the strap head particle 7.

[0031] From the above description, it can be seen that the beneficial effects of the utility model are: the sintering jig described in the utility model can be applied to the sintering process of the watch strap head particle 7, and the inclined surface 5 of the support part 4 can play a good supporting role for the first connecting part 71 inclined on the watch strap head particle 7, so as to avoid the first connecting part 71 of the watch strap head particle 7 from collapsing during the sintering process; in addition, the first limiting groove 2 and the second limiting groove 3 can play a limiting and fixing role for the green body of the watch strap head particle 7 during the sintering process, so as to avoid the green body of the watch strap head particle 7 from shifting during the transfer or sintering process. The first limiting groove 2 and the second limiting groove 3 also increase the supporting area of ​​the sintering jig for the green body of the watch strap head particle 7, so that the green body of the watch strap is not easily twisted and deformed during the sintering process. The sintering jig provided by the utility model can ensure the molding effect of the outer contour of the sintered product of the watch strap head particle 7, and the sintering jig can improve the yield rate of the watch strap head particle 7.

[0032] Furthermore, the first limiting groove 2 is a through groove provided along the length direction of the fixture body 1 .

[0033] From the above description, it can be seen that the first limiting groove 2 is a through groove structure. During the processing of the sintering fixture, only the groove width of the first limiting groove 2 needs to be controlled, which reduces the processing difficulty of the first limiting groove 2 on the sintering fixture, so that the sintering fixture also has the advantage of low processing cost.

[0034] Furthermore, the fixture body 1 is provided with a plurality of the second limiting grooves 3 at intervals along the length direction thereof.

[0035] Furthermore, the second limiting grooves 3 are provided on two opposite sides of the fixture body 1 .

[0036] It can be seen from the above description that the sintering jig can accommodate multiple watch strap head particles 7 at the same time, thereby improving the efficiency of the sintering process of the watch strap head particles 7.

[0037] Furthermore, two first limiting grooves 2 are provided on the fixture body 1 .

[0038] Furthermore, a limiting portion 6 is provided on a side of the first limiting groove 2 opposite to the supporting portion 4 .

[0039] Furthermore, the width of the first limiting groove 2 is 4.35-4.45 mm.

[0040] In some preferred embodiments of the present invention, the width of the main body 73 of the watch strap head particle 7 is 4.25 mm, and a gap of 0.10-0.20 mm is reserved in the first limiting groove 2 relative to the main body 73 of the watch strap head particle 7, so that the operator can more easily position the green body of the watch strap head particle 7 on the sintering jig.

[0041] Of course, in some other preferred embodiments of the present invention, the width of the first limiting groove 2 can be adaptively adjusted to correspond to the width of the main body 73 of the strap head particle 7.

[0042] Furthermore, the inclination angle of the inclined surface 5 relative to the horizontal direction is 145 degrees.

[0043] In some preferred embodiments of the present invention, the inclination angle of the first connection part 71 of the strap head 7 relative to the horizontal direction is 145 degrees, and the inclination angle of the inclined surface 5 is set corresponding to the inclination angle of the first connection part 71 to ensure the supporting effect of the support part 4 on the first connection part 71, and to avoid the first connection part 71 collapsing due to the support part 4 not supporting the first connection part 71 properly.

[0044] Of course, in some other preferred embodiments of the present invention, the inclination angle of the inclined surface 5 can be adaptively adjusted to correspond to the inclination angle of the first connecting portion 71 of the strap head 7 .

[0045] Furthermore, the second limiting groove 3 is a through groove provided along the height direction of the fixture body 1 .

[0046] From the above description, it can be seen that the second limiting groove 3 is a through groove structure. During the processing of the sintering fixture, only the groove width of the second limiting groove 3 needs to be controlled, which reduces the processing difficulty of the first limiting groove 2 on the sintering fixture, so that the sintering fixture also has the advantage of low processing cost.

[0047] Furthermore, the length of the second limiting groove 3 is 14.45-14.55 mm.

[0048] In some preferred embodiments of the present invention, the length of the second connecting portion 72 of the strap head particle 7 is 14.35 mm, and the length of the second limiting groove 3 reserves a gap of 0.10-0.20 mm relative to the length of the strap head particle 7, so that the operator can more easily position the green body of the strap head particle 7 on the sintering jig.

[0049] Of course, in some other preferred embodiments of the present invention, the length of the second limiting groove 3 can be adaptively adjusted to correspond to the length of the second connecting portion 72 of the strap head 7.

[0050] Embodiment 1

[0051] Please refer to Figures 2 to 4 , the first embodiment of the utility model is: to provide a method for Figure 1The sintering jig with a head particle 7 shown in the figure comprises a jig body 1, and the adjacent two sides of the jig body 1 are respectively provided with a first limiting groove 2 and a second limiting groove 3 that are interconnected, wherein the first limiting groove 2 is arranged at the top of the jig body 1, and two supporting portions 4 are respectively formed on the opposite sides of the second limiting groove 3, and the two supporting portions 4 are both located on one side of the first limiting groove 2, and the side of the supporting portion 4 close to the first limiting groove 2 is provided with an inclined surface 5.

[0052] like Figure 1 As shown, both ends of the main body 73 of the strap head 7 in the length direction are provided with a first connecting portion 71 for connecting to the middle frame of the watch, and the first connecting portion 71 is inclined relative to the main body 73 of the strap head 7, and the bottom of the main body 73 of the strap head 7 is provided with a second connecting portion 72 for connecting to the watch strap, so the overall strap head 7 has an irregular structure.

[0053] In the practical application of the sintering fixture designed in the first embodiment, Figure 4 As shown, the main body 73 of the watch strap head particle 7 can be accommodated in the first limiting groove 2, the second connection part 72 of the watch strap head particle 7 can be accommodated in the second limiting groove 3, and the inclined surface 5 of the support part 4 can support the first connection part 71 of the watch strap head particle 7. Specifically, the inclination angle α of the inclined surface 5 relative to the horizontal direction is 145 degrees. The first limiting groove 2, the second limiting groove 3 and the support part 4 increase the supporting area of ​​the sintering jig for the watch strap head particle 7, and the sintering jig can provide good support for the first connection part 71 through the inclined surface 5 of the support part 4 to prevent the first connection part 71 from collapsing during the sintering process, so that the sintering jig can reduce the probability of distortion of the watch strap head particle 7 during the sintering process and improve the yield rate of the watch strap head particle 7.

[0054] In the first embodiment, the first limiting groove 2 is a through groove set along the length direction of the fixture body 1, and the second limiting groove 3 is a through groove set along the height direction of the fixture body 1. Therefore, the processing cost of the sintering fixture described in the first embodiment is low.

[0055] like Figure 2 As shown, specifically, a plurality of second limiting grooves 3 are arranged at intervals along the length direction of the jig body 1 on both opposite sides, and two first limiting grooves 2 are arranged along the length direction of the jig body 1. Therefore, a plurality of green blanks of the strap head particles 7 can be placed on the sintering jig at the same time, and the sintering jig can effectively improve the sintering efficiency of the strap head particles 7. In addition, a limiting portion 6 is provided between the two first limiting grooves 2, and the limiting portion 6 is arranged along the length direction of the jig body 1. In detail, a limiting portion 6 is provided on the side of the first limiting groove 2 opposite to the support portion 4.

[0056] Among them, in the first embodiment, the width of the main body 73 of the strap head particle is 4.25mm, and the width d1 of the first limiting groove 2 is 4.35-4.45mm; the length of the second connecting portion 72 is 14.35mm, and the width d2 of the second limiting groove 3 is 14.45-14.55mm. In the first embodiment, the width of the first limiting groove 2 reserves a gap of 0.10-0.20mm relative to the width of the strap head particle 7, and the length of the second limiting groove 3 reserves a gap of 0.10-0.20mm relative to the length of the strap head particle 7, so as to facilitate the positioning of the strap head particle in the fixture body 1.

[0057] In summary, the sintering jig described in the utility model can be applied to the sintering process of the watch strap head particle 7, and the inclined surface 5 of the support part 4 can play a good supporting role for the first connecting part 71 inclined on the watch strap head particle 7, so as to avoid the first connecting part 71 of the watch strap head particle 7 from collapsing during the sintering process; in addition, the first limiting groove 2 and the second limiting groove 3 can play a limiting and fixing role for the green body of the watch strap head particle 7 during the sintering process, so as to avoid the green body of the watch strap head particle 7 from shifting during the transfer or sintering process. The first limiting groove 2 and the second limiting groove 3 also increase the supporting area of ​​the sintering jig for the green body of the watch strap head particle 7, so that the green body of the watch strap is not easily twisted and deformed during the sintering process. The sintering jig provided by the utility model can ensure the molding effect of the outer contour of the sintered product of the watch strap head particle 7, and the sintering jig can improve the yield rate of the watch strap head particle 7.

[0058] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sintering jig for strap head particles, characterized in that: It includes a jig body, and the adjacent two sides of the jig body are respectively provided with a first limit groove and a second limit groove that are connected to each other, the first limit groove is arranged at the top of the jig body, and two supporting parts are formed on the opposite sides of the second limit groove, and the two supporting parts are both located on one side of the first limit groove, and the side of the supporting part close to the first limit groove is provided with an inclined surface.

2. The sintering jig according to claim 1, characterized in that: The first limiting groove is a through groove arranged along the length direction of the fixture body.

3. The sintering jig according to claim 1, characterized in that: The fixture body is provided with a plurality of second limiting grooves spaced apart along the length direction thereof.

4. The sintering jig according to claim 1, characterized in that: The second limiting grooves are disposed on opposite sides of the fixture body.

5. The sintering jig according to claim 4, characterized in that: The fixture body is provided with two first limiting grooves.

6. The sintering jig according to claim 1, characterized in that: A limiting portion is provided on a side of the first limiting groove opposite to the supporting portion.

7. The sintering jig according to claim 1, characterized in that: The width of the first limiting groove is 4.35-4.45 mm.

8. The sintering jig according to claim 1, characterized in that: The second limiting groove is a through groove arranged along the height direction of the fixture body.

9. The sintering jig according to claim 1, characterized in that: The inclination angle of the inclined surface relative to the horizontal direction is 145 degrees.

10. The sintering jig according to claim 1, characterized in that: The length of the second limiting groove is 14.45-14.55 mm.

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