Self-resetting type press-fitting structure

Abstract

The utility model relates to a self-resetting type press-fitting structure which comprises a supporting assembly, a pressing assembly and a pressing assembly. The supporting assembly comprises a bottom plate and a rotating plate rotationally installed on the top of the bottom plate. The bearing assembly comprises a first bearing mechanism and a second bearing mechanism which are fixed to the top of the rotating plate; the press-fitting assembly comprises a lifting plate arranged above the bearing assembly in a lifting mode, an upper pressing plate fixed to the bottom of the lifting plate and a lower pressing plate elastically installed at the bottom of the upper pressing plate. According to the self-resetting type press-fitting structure, the automation degree of the press-fitting process is high, the press-fitting efficiency of products is remarkably improved, the situation that press-fitting is not in place does not exist, and the percent of pass of the products is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembly press-fitting, and in particular relates to a self-resetting press-fitting structure. Background Art

[0002] Pressing is a commonly used assembly method, which presses the part to be assembled into another part by applying a certain force to achieve the purpose of fastening. This method is suitable for occasions that require high-strength and high-precision connections, such as machinery manufacturing, aerospace, automobile manufacturing and other industries.

[0003] In the manufacturing industry, many workpieces to be assembled are often of a chimeric structure, that is, one workpiece has a chimeric convex part (such as a shaft) and the other workpiece has a matching concave part (such as a hole). Generally, when processing such assembled workpieces, the matching relationship between the convex part and the concave part is an interference fit or a transition fit. In this case, it is necessary to press the two workpieces together during the assembly process until they are assembled in place. Figure 1 As shown in the figure, the product consists of a pressing sheet 5 and a lifting ear 4 which are pressed together. The lifting ear 4 is provided with a penetrating pressing hole. A convex column is integrally connected to the pressing sheet 5. The convex column is pressed into the pressing hole by external force, thereby completing the assembly of the product.

[0004] During assembly, the convex column of the pressing sheet needs to be embedded into the pressing hole of the ear and pressed into place. Pure manual pressing and assembly is very labor-intensive and the assembly efficiency is very low. Not only is the labor cost very high, but also manual pressing and assembly is prone to incomplete assembly, resulting in a low product qualification rate. Utility Model Content

[0005] The utility model provides a self-resetting press-fitting structure, which solves the defects of low efficiency and inadequate press-fitting in the prior art that rely on manual press-fitting.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a self-resetting press-fit structure, which includes:

[0007] A support assembly, the support assembly comprising a bottom plate and a rotating plate rotatably mounted on the top of the bottom plate;

[0008] A bearing assembly, the bearing assembly comprising a first bearing mechanism and a second bearing mechanism fixed on the top of the rotating plate;

[0009] The first bearing mechanism comprises a supporting plate elastically arranged on the top of the rotating plate, a carrying plate fixed on the top of the supporting plate, and a carrying slot opened on the top of the carrying plate;

[0010] The second bearing mechanism comprises a second supporting plate elastically arranged on the top of the rotating plate, a bearing frame fixed on the top of the second supporting plate, an upper top column fixed on the bottom of the second supporting plate and passing through the rotating plate, and a lower top column fixed on the bottom plate and matched with the upper top column;

[0011] The press-fitting assembly comprises a lifting plate which is lifted and lowered above the bearing assembly, an upper pressing plate fixed at the bottom of the lifting plate, and a lower pressing plate elastically mounted at the bottom of the upper pressing plate.

[0012] Optimally, the first bearing mechanism also includes a first bearing platform fixed on the top of the rotating plate, a fixed plate fixed on the top of the first bearing platform, a linear bearing embedded in the fixed plate, an avoidance groove opened on the opposite side of the first bearing platform, and a first guide column fixed on the bottom of the support plate and passing through the linear bearing, and the first guide column is inserted into the avoidance groove.

[0013] Optimally, the first bearing mechanism further comprises a guide rod fixed to the bottom of the support plate and passing through the fixed plate, a synchronization plate fixed to the bottom of the guide rod, and a first spring sleeved on the guide rod, wherein the first spring abuts between the support plate and the fixed plate.

[0014] Optimally, the second bearing mechanism further includes a second bearing platform fixed on the top of the rotating plate and a second spring fixed between the second bearing platform and the second support plate.

[0015] Optimally, the second bearing mechanism further includes a guide sleeve embedded in the second bearing platform and a second guide column fixed to the bottom of the second support plate and passing through the guide sleeve and the rotating plate.

[0016] Optimally, the press-fitting assembly also includes a press-fitting frame fixed to the top of the base plate, a press-fitting cylinder fixed to the press-fitting frame and connected to the lifting plate, a third guide sleeve embedded in the press-fitting frame, and a third guide column fixed to the lifting plate and passing through the third guide sleeve.

[0017] Optimally, the press-fitting assembly also includes a return spring fixed between the upper pressure plate and the lower pressure plate, an upper limit hole opened at the top of the upper pressure plate, a lower limit hole opened at the bottom of the upper limit hole and passing through the upper pressure plate, and a screw passing through the upper pressure plate and fixed to the lower pressure plate, and the diameter of the upper limit hole is larger than the diameter of the lower limit hole.

[0018] Optimally, the screw includes a nut portion, a connecting portion integrally connected to the bottom of the nut portion, and a screw portion integrally connected to the bottom of the connecting portion, the nut portion abuts against the bottom of the upper limit hole, the connecting portion passes through the lower limit hole, and the screw portion is fixed on the lower pressure plate.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] When the self-resetting press-fitting structure of the utility model is press-fitting a product, the product to be press-fitted is placed on the bearing assembly, which is driven by the rotating plate to rotate to the bottom of the press-fitting assembly, and the press-fitting of the product is completed through the upper press-fitting assembly. The entire press-fitting process has a high degree of automation, which significantly improves the press-fitting efficiency of the product, and there is no situation where the press-fitting is not in place, which improves the qualified rate of the product;

[0021] Furthermore, during the press-fitting process, rigid press-fitting is achieved through the contact between the upper ejector post and the lower ejector post, which can not only ensure that the product is pressed into place, but also cooperate with the second spring to avoid direct pressure on the rotating plate and avoid tilting the rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a press-fit product;

[0023] Figure 2 It is a structural schematic diagram of the utility model;

[0024] Figure 3 It is the front view of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the first bearing mechanism of the utility model;

[0026] Figure 5 It is a front view of the first bearing mechanism of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the second bearing mechanism of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the press-fit assembly of the utility model;

[0029] Figure 8 This is the front view of the press-fit assembly of the utility model;

[0030] Fig. 9 It is a partial cross-sectional view of the press-fit assembly of the utility model;

[0031] Description of reference numerals:

[0032] 1. Support assembly; 11. Bottom plate; 12. Rotating motor; 13. Turning plate;

[0033] 2. Carrying assembly; 21. First bearing platform; 22. Fixing plate; 23. Avoidance groove; 24. Linear bearing; 25. First guide column; 26. Support plate; 27. Carrying plate; 28. Carrying groove; 29. ​​Guide rod; 210. First spring; 211. Synchronous plate; 212. Second bearing platform; 213. Second supporting plate; 214. Upper ejector column; 215. Lower ejector column; 216. Carrying frame; 217. Guide sleeve; 218. Second guide column; 219. Second spring;

[0034] 3. Press-fit assembly; 31. Press-fit frame; 32. Press-fit cylinder; 33. Lifting plate; 34. Third guide column; 35. Third guide sleeve; 36. Upper pressing plate; 37. Lower pressing plate; 38. Return spring; 39. Avoidance hole; 310. Upper limit hole; 311. Lower limit hole; 312. Nut part; 313. Connecting part; 314. Screw part;

[0035] 4. Lifting lugs;

[0036] 5. Tablet pressing. DETAILED DESCRIPTION

[0037] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0038] like Figure 1 The figure is a schematic diagram of the structure of the product after pressing. The product consists of a pressing sheet 5 and a lifting ear 4 which are pressed together. The lifting ear 4 is provided with a penetrating pressing hole. A boss is integrally connected to the pressing sheet 5. The boss is pressed into the pressing hole by external force, thereby completing the assembly of the product.

[0039] like Figure 2 , 3 The figure is a schematic diagram of the structure of the self-resetting press-fit structure of the utility model, which is usually used for press-fitting Figure 1 The product shown in the figure significantly improves the efficiency of press-fitting and the effect of the finished product after press-fitting, compared with manual press-fitting. The press-fitting structure includes a support component 1, a load-bearing component 2 and a press-fitting component 3.

[0040] The supporting assembly 1 includes a base plate 11, a rotating motor 12 and a rotating plate 13. The base plate 11 is fixed on the press machine table by screws. The rotating motor 12 is fixed on the top of the base plate 11. The rotating plate 13 is connected to the output end of the rotating motor 12. The rotating motor 12 drives the rotating plate 13 to rotate, thereby driving the bearing assembly 2 to rotate to the bottom of the press assembly 3, so as to facilitate the press step.

[0041] The bearing assembly 2 is fixed on the top of the rotating plate 13, and the pressing assembly 3 is fixed on the bottom plate 11 and cooperates with the bearing assembly 2. The rotating plate 13 drives the bearing assembly 2 carrying the product to rotate to the bottom of the pressing assembly 3, and the pressing assembly 3 completes the pressing work of the product.

[0042] The bearing assembly 2 includes a first bearing mechanism and a second bearing mechanism, which jointly support the product to be pressed. The first bearing mechanism is located inside the second bearing mechanism, and the operator inserts the pressing sheet 5 to be assembled on the second bearing mechanism, and then places the lifting lug 4 to be assembled on the first bearing mechanism, and finally moves to the bottom of the press-fitting assembly 3, and completes the press-fitting of the product through the press-fitting assembly 3.

[0043] like Figure 4 , 5 , which is a schematic diagram of the structure of the first bearing mechanism, the first bearing mechanism includes a first bearing platform 21, a fixing plate 22, an avoidance groove 23, a linear bearing 24, a first guide column 25, a support plate 26, a carrier plate 27, a carrier groove 28, a guide rod 29, a first spring 210 and a synchronous plate 211. There are two first bearing platforms 21, which are fixed at intervals on the top of the rotating plate 13 by screw fastening, and a gap is left between the two first bearing platforms 21 to facilitate the installation of the synchronous plate 211.

[0044] The fixing plate 22 is fixed on the top of the first bearing platform 21, and the avoidance groove 23 is vertically opened on the opposite side of the first bearing platform 21, which is used to avoid and limit the movement of the first guide column 25 to prevent the support plate 26 from shaking during the pressing process and affecting the final pressing effect.

[0045] The linear bearing 24 is embedded in the fixed plate 22, the first guide column 25 passes through the linear bearing 24 and is placed in the avoidance groove 23, the top of the first guide column 25 is fixed to the bottom of the support plate 26, and when the support plate 26 descends, the linear bearing 24 and the avoidance groove 23 are used to limit and guide the descending first guide column 25, thereby improving the effect of the product after pressing.

[0046] The carrier plate 27 is fixed on the top of the support plate 26 , and a carrier groove 28 is provided on the top of the carrier plate 27 . The shape of the carrier groove 28 matches the shape of the lifting lug 4 to be press-fitted, and is used to carry the product to be press-fitted.

[0047] The guide rod 29 is fixed to the bottom of the support plate 26 and penetrates the fixed plate 22. The first spring 210 is sleeved on the guide rod 29 and respectively abuts between the fixed plate 22 and the support plate 26. A synchronization plate 211 is fixed to the bottom of the guide rod 29 to ensure the synchronous lifting and lowering of the guide rod 29. By setting the first spring 210, after the previous product is press-fitted, the compressed first spring 210 will push the carrier plate 27 to reset during the resetting process, which is convenient for the next press-fitting.

[0048] like Figure 6The figure is a schematic diagram of the structure of the second bearing mechanism. The second bearing mechanism cooperates with the first bearing mechanism to jointly complete the bearing and press-fitting of the product. The second bearing mechanism includes a second bearing platform 212, a second support plate 213, an upper top column 214, a lower top column 215, a bearing frame 216, a guide sleeve 217, a second guide column 218 and a second spring 219. The second bearing platform 212 is fixed to the top of the rotating plate 13 by screw fastening. A second spring 219 is fixed between the second support plate 213 and the second bearing platform 212. The second spring 219 can support the second support plate 213 to ensure that there is a gap between the second support plate 213 and the second bearing platform 212, so as to facilitate the downward pressing of the second support plate 213; at the same time, relying on the elastic buffering effect of the second spring 219, it is avoided that pressure is directly applied to the rotating plate 13, causing the rotating plate 13 to be pressed and tilted, thereby affecting the press-fitting effect of the product.

[0049] The guide sleeve 217 is embedded in the second bearing platform 212, and the second guide column 218 is fixed at the bottom of the second support plate 213 and passes through the guide sleeve 217 and the rotating plate 13. By setting the guide sleeve 217 and the second guide column 218, the descending second support plate 213 is guided and limited, thereby improving the effect of product press-fitting.

[0050] The support frame 216 is vertically fixed on the top of the second support plate 213 and cooperates with the carrier plate 27. The operator inserts the pressing piece 5 to be assembled on the support frame 216 of the second support mechanism, and then places the ear 4 to be assembled in the loading slot 28 of the first support mechanism, and finally moves to the bottom of the press-fitting component 3 to complete the press-fitting and ensure that the product is assembled in place.

[0051] The upper pillar 214 is fixed to the bottom of the second support plate 213 and penetrates the second bearing platform 212 and the rotating plate 13. The lower pillar 215 is fixed to the top of the bottom plate 11 and cooperates with the upper pillar 214. When the rotating plate 13 drives the bearing assembly 2 to rotate to the bottom of the press-fitting assembly 3, the upper pillar 214 is located above the lower pillar 215. When the press-fitting assembly 3 is pressed downward, the bearing frame 216 and the second support plate 213 will move downward. At the same time, the upper pillar 214 descends and abuts against the upper surface of the lower pillar 215. Through the contact between the upper pillar 214 and the lower pillar 215, rigid press-fitting is achieved, which can not only ensure that the product is pressed into place, but also cooperate with the second spring 219 to avoid direct pressure on the rotating plate 13 and avoid tilting the rotating plate 13.

[0052] The press-fitting assembly 3 is fixed on the top of the bottom plate 11 and cooperates with the bearing assembly 2 to complete the press-fitting of the product. Figure 7 , 8As shown, the press-fitting assembly 3 includes a press-fitting frame 31, a press-fitting cylinder 32, a lifting plate 33, a third guide column 34, a third guide sleeve 35, an upper pressing plate 36, a lower pressing plate 37, a return spring 38, an avoidance hole 39, an upper limit hole 310, a lower limit hole 311 and a screw. The press-fitting frame 31 is fixed on the top of the bottom plate 11 and is located on one side of the rotating plate 13. The cylinder body of the press-fitting cylinder 32 is fixed on the press-fitting frame 31. The guide rod of the press-fitting cylinder 32 is connected to the lifting plate 33 to drive the lifting plate 33 to move up and down, thereby completing the press-fitting work of the product.

[0053] The third guide sleeve 35 is embedded in the press-fitting frame 31, and the third guide column 34 is fixed on the top of the lifting plate 33 and passes through the third guide sleeve 35. When the press-fitting cylinder 32 drives the lifting plate 33 to move up and down, it will drive the third guide column 34 to move synchronously along the third guide sleeve 35 to guide the lifting plate 33 and improve the product press-fitting effect.

[0054] The upper pressing plate 36 is fixed to the bottom of the lifting plate 33, and the screw passes through the upper pressing plate 36 to fix the lower pressing plate 37, and a return spring 38 is fixed between the upper pressing plate 36 and the lower pressing plate 37. During the actual press-fitting, the press-fitting cylinder 32 drives the lifting plate 33 to descend until the lower pressing plate 37 fits the upper surface of the lifting lug 4; the press-fitting cylinder 32 continues to press down, and at this time the lower pressing plate 37 rises to fit the upper pressing plate 36, and the return spring 38 is compressed. The return spring 38 can ensure the elastic press-fitting of the product and avoid pressing marks on the surface of the product. At the same time, after the press-fitting is completed, the lower pressing plate 37 can be rebounded to reset, which is convenient for the next press-fitting.

[0055] like Fig. 9 As shown, the upper limit hole 310 is provided at the top of the upper pressing plate 36, and the lower limit hole 311 is provided at the bottom of the upper limit hole 310 and penetrates the upper pressing plate 36. The screw comprises a nut portion 312, a connecting portion 313 and a screw portion 314, wherein the connecting portion 313 is integrally connected to the bottom of the nut portion 312, and the screw portion 314 is integrally connected to the bottom of the connecting portion 313. The outer circumference of the connecting portion 313 is cylindrical (i.e., the outer circumference of the connecting portion 313 is not provided with threads, but is a smooth section of shaft), and is penetrated in the lower limit hole 311.

[0056] The outer circumference of the screw portion 314 is provided with an external thread and is screwed onto the lower pressing plate 37. Therefore, after the screw passes through the upper limit hole 310 and the lower limit hole 311, the nut portion 312 abuts against the lower surface of the upper limit hole 310, the connecting portion 313 passes through the lower limit hole 311, and the screw portion 314 is screwed and fixed onto the lower pressing plate 37. Due to the abutment between the nut portion 312 and the upper limit hole 310, the lower pressing plate 37 will not fall downward, but the lower pressing plate 37 can move upward to fit with the upper pressing plate 36 (because the outer circumference of the connecting portion 313 has no thread, the nut portion 312 and the connecting portion 313 can move freely in the upper limit hole 310 and the lower limit hole 311).

[0057] When the lower pressing plate 37 is in the process of ascending, the lower limit hole 311 limits the connection part 313, ensuring that the lower pressing plate 37 does not deviate left or right when pressing down, thereby improving the accuracy of press-fitting. At the same time, the return spring 38 is compressed, and the elastic press-fitting of the product is realized by relying on the reverse force of the return spring 38 after being compressed.

[0058] The avoidance hole 39 is formed at the bottom of the lower pressing plate 37 to avoid the convex column structure on the pressing sheet 5 when the product is pressed.

[0059] When the self-resetting press-fitting structure of the utility model is press-fitting a product, the product to be press-fitted is placed on the bearing assembly 2, and is driven by the rotating plate 13 to rotate to the bottom of the press-fitting assembly 3, and the press-fitting of the product is completed through the upper press-fitting assembly 3. The entire press-fitting process has a high degree of automation, which significantly improves the press-fitting efficiency of the product and the effect after press-fitting. There is no situation where the press-fitting is not in place, and the qualified rate of the product is improved.

[0060] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A self-resetting press-fit structure, characterized in that: It includes: A support assembly (1), the support assembly (1) comprising a base plate (11) and a rotating plate (13) rotatably mounted on the top of the base plate (11); A bearing assembly (2), the bearing assembly (2) comprising a first bearing mechanism and a second bearing mechanism fixed on the top of the rotating plate (13); The first bearing mechanism comprises a support plate (26) elastically arranged on the top of the rotating plate (13), a carrier plate (27) fixed on the top of the support plate (26), and a carrier groove (28) opened on the top of the carrier plate (27); The second bearing mechanism comprises a second supporting plate (213) elastically arranged on the top of the rotating plate (13), a bearing frame (216) fixed on the top of the second supporting plate (213), an upper top column (214) fixed on the bottom of the second supporting plate (213) and passing through the rotating plate (13), and a lower top column (215) fixed on the bottom plate (11) and matched with the upper top column (214); A press-fitting assembly (3), the press-fitting assembly (3) comprising a lifting plate (33) which is liftably arranged above the bearing assembly (2), an upper pressing plate (36) fixed to the bottom of the lifting plate (33), and a lower pressing plate (37) elastically mounted to the bottom of the upper pressing plate (36).

2. A self-resetting press-fit structure according to claim 1, characterized in that: The first bearing mechanism further comprises a first bearing platform (21) fixed on the top of the rotating plate (13), a fixing plate (22) fixed on the top of the first bearing platform (21), a linear bearing (24) embedded in the fixing plate (22), an avoidance groove (23) provided on the opposite side of the first bearing platform (21), and a first guide column (25) fixed on the bottom of the supporting plate (26) and passing through the linear bearing (24), wherein the first guide column (25) is inserted into the avoidance groove (23).

3. A self-resetting press-fit structure according to claim 2, characterized in that: The first bearing mechanism also includes a guide rod (29) fixed to the bottom of the support plate (26) and penetrating the fixed plate (22), a synchronization plate (211) fixed to the bottom of the guide rod (29), and a first spring (210) sleeved on the guide rod (29), wherein the first spring (210) is abutted between the support plate (26) and the fixed plate (22).

4. The self-resetting press-fit structure according to claim 1, characterized in that: The second bearing mechanism further comprises a second bearing platform (212) fixed on the top of the rotating plate (13) and a second spring (219) fixed between the second bearing platform (212) and the second supporting plate (213).

5. A self-resetting press-fit structure according to claim 4, characterized in that: The second bearing mechanism further comprises a guide sleeve (217) embedded in the second bearing platform (212) and a second guide column (218) fixed to the bottom of the second support plate (213) and passing through the guide sleeve (217) and the rotating plate (13).

6. The self-resetting press-fit structure according to claim 1, characterized in that: The press-fitting assembly (3) further comprises a press-fitting frame (31) fixed on the top of the base plate (11), a press-fitting cylinder (32) fixed on the press-fitting frame (31) and connected to the lifting plate (33), a third guide sleeve (35) embedded in the press-fitting frame (31), and a third guide column (34) fixed on the lifting plate (33) and passing through the third guide sleeve (35).

7. The self-resetting press-fit structure according to claim 1, characterized in that: The press-fitting assembly (3) also includes a return spring (38) fixed between the upper pressing plate (36) and the lower pressing plate (37), an upper limit hole (310) opened at the top of the upper pressing plate (36), a lower limit hole (311) opened at the bottom of the upper limit hole (310) and passing through the upper pressing plate (36), and a screw rod passing through the upper pressing plate (36) and fixed to the lower pressing plate (37), wherein the diameter of the upper limit hole (310) is greater than the diameter of the lower limit hole (311).

8. The self-resetting press-fit structure according to claim 7, characterized in that: The screw rod comprises a nut portion (312), a connecting portion (313) integrally connected to the bottom of the nut portion (312), and a screw rod portion (314) integrally connected to the bottom of the connecting portion (313); the nut portion (312) abuts against the bottom of the upper limit hole (310), the connecting portion (313) passes through the lower limit hole (311), and the screw rod portion (314) is fixed on the lower pressure plate (37).

Images