Press fitting device

Abstract

The utility model relates to the technical field of press fitting, in particular to a press fitting device which comprises a main frame body and an installation mold used for fixing a workpiece, the installation mold is arranged on the main frame body, and the main frame body is further provided with a pressing and holding mechanism used for pressing and holding the workpiece and a driving mechanism used for driving the pressing and holding mechanism to press downwards. The mounting die is provided with adaptive grooves used for being in embedded fit with the first positioning pins, the adaptive grooves are arranged corresponding to the positions of the first positioning pins, the mounting die can preliminarily fix the position of the workpiece, the first positioning pins and the corresponding adaptive grooves are in embedded fit, the first positioning pins cannot be dislocated in the press fitting process, and the press fitting precision is improved. The position of the workpiece is further limited, so that the accuracy and the stability of the press fitting process are improved; through the arrangement of the pressing and holding mechanism and the driving mechanism, the driving mechanism can drive the pressing and holding mechanism to downwards press the workpiece, so that the first positioning pin is completely embedded into the mounting groove of the workpiece.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of press fitting, in particular to a press fitting device. BACKGROUND

[0002] The press fitting technology is a process method for tightly combining two or more parts together by applying pressure, and is widely applied in the fields of automobile manufacturing, aerospace, precision machinery and electronic component manufacturing.

[0003] In the industry, a cylindrical workpiece is provided with an open slot with an opening downward, a first positioning pin is clamped on the inner circle of the workpiece, and a second positioning pin is clamped on the outer circle of the workpiece, and four first positioning pins need to be clamped into the corresponding installation slots. Traditionally, a hammer is used to hammer the first positioning pin into the corresponding installation slot, but this force application method is easy to cause damage to the first positioning pin due to improper operation of the worker, and there is room for improvement. CONTENT OF THE UTILITY MODEL

[0004] In order to stably press the first positioning pin into the installation slot, the application provides a press fitting device.

[0005] The application provides a press fitting device, which adopts the following technical scheme:

[0006] A press fitting device comprises a main frame body and an installation mold for fixing a workpiece, the installation mold is arranged on the main frame body, the main frame body is further provided with a pressing mechanism for pressing the workpiece and a driving mechanism for driving the pressing mechanism to press down, the installation mold is provided with an adaptive slot for forming an embedding cooperation with a first positioning pin, and the adaptive slot is arranged at the position corresponding to the first positioning pin.

[0007] By adopting the above technical scheme, the installation mold can preliminarily fix the position of the workpiece, and the first positioning pin forms an embedding cooperation with the corresponding adaptive slot, so that the first positioning pin will not be dislocated during the press fitting process, and the position of the workpiece is further limited, thereby improving the accuracy and stability of the press fitting process. The driving mechanism can drive the pressing mechanism to press down the workpiece, so that the first positioning pin is completely embedded into the installation slot of the workpiece.

[0008] Preferably, the installation mold comprises an installation block arranged on the main frame body and a limiting unit for fixing the workpiece, the limiting unit is arranged on the installation block, and the installation block is provided with an avoiding hole for forming a plug-in cooperation with a second positioning pin.

[0009] By adopting the technical scheme, the second positioning pin is in plug-in cooperation with the avoiding hole, so that the avoiding hole can avoid the downward movement of the second positioning pin during the pressing of the workpiece by the pressing mechanism, and the position of the workpiece can be further limited by the avoiding hole.

[0010] Preferably, the limiting unit comprises a rotating ring and a support block arranged on the mounting block, the support block is arranged in a circumferential array, the rotating ring is provided with elastic pins for connecting the support blocks and a driving unit for driving the elastic pins to drive the support blocks to expand or shrink outward, and the positions and number of the elastic pins correspond to those of the support blocks.

[0011] By adopting the technical scheme, since the support blocks and the elastic pins are arranged in a circumferential array, the driving unit drives the elastic pins to drive the support blocks to expand or shrink outward on the mounting block, so that the size of the support blocks can be adjusted by the worker as needed, so that the support blocks can limit workpieces of different specifications.

[0012] Preferably, the rotating ring is provided with an adjusting groove, the adjusting groove is arranged obliquely from the outer edge of the rotating ring to the inner edge of the rotating ring, and the elastic pins are arranged in the adjusting groove in a sliding manner.

[0013] By adopting the technical scheme, the adjusting groove is arranged obliquely from the outer edge of the rotating ring to the inner edge of the rotating ring, when the driving unit drives the rotating ring to rotate, the rotating ring drives the elastic pins to slide in the adjusting groove, so that the elastic pins drive the support blocks to expand or shrink outward on the mounting block, thereby improving the convenience and accuracy of operation.

[0014] Preferably, the main frame body is symmetrically provided with a sliding rail, and the mounting block is in guided sliding cooperation with the sliding rail.

[0015] By adopting the technical scheme, the sliding rail is arranged to facilitate the worker to install or adjust the workpiece, thereby improving the work efficiency and the safety of operation.

[0016] Preferably, the pressing mechanism comprises a balance plate and a pressing plate for pressing the workpiece, the balance plate is arranged on the driving mechanism, the pressing plate is arranged on the balance plate, the balance plate is symmetrically provided with guide rods for keeping balance during pressing, and any one of the guide rods penetrates the main frame body and is in sliding cooperation with the main frame body.

[0017] By adopting the technical scheme, the guide rods and the balance plate are arranged, so that the driving mechanism can reduce left and right shaking during work to keep balance, so that the balance plate and the pressing plate can keep balance during the pressing process, thereby preventing the pressing plate from affecting the pressing effect due to uneven stress.

[0018] Preferably, the driving unit comprises a driving rod, a connecting plate and a hand lever, one end of the driving rod is connected with the rotating ring, the driving rod is connected with the connecting plate, and the other end of the connecting plate away from the driving rod is hinged with the hand lever.

[0019] By adopting the above technical scheme, one end of the connecting plate is fixedly connected with the driving rod, and the other end of the connecting plate is hinged with the hand lever, so that the worker can flexibly move by operating the driving rod on the connecting plate through the hand lever, the driving rod drives the rotating disc to rotate, and the control of the expansion or contraction of the support block is realized, and the design not only simplifies the operation process, but also improves the convenience and accuracy of operation.

[0020] Preferably, the mounting block is provided with a handle for facilitating the worker to pull out the mounting block.

[0021] By adopting the above technical scheme, the handle is provided, the worker drives the mounting block and the limiting unit thereon to slide on the slide rail by pulling the handle, the worker is facilitated to install or move the workpiece, and the convenience of operation is improved.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The installation mold is provided, the installation mold can preliminarily fix the position of the workpiece, and the first positioning pin is embedded and matched with the corresponding adaptive slot, so that the first positioning pin will not be dislocated in the pressing process, and the position of the workpiece is further limited, thereby improving the accuracy and stability of the pressing process; the pressing mechanism and the driving mechanism are provided, the driving mechanism can drive the pressing mechanism to press the workpiece, so that the first positioning pin is completely embedded into the installation slot of the workpiece;

[0024] 2. Since the support block and the elastic pin are arranged in a circular array, the driving unit drives the elastic pin to drive the support block to expand or contract on the mounting block, so that the worker can adjust the size of the support block as needed, so that the support block can limit the workpiece of different specifications;

[0025] 3. The adjusting groove is inclined from the outer edge of the rotating ring to the inner edge of the rotating ring, when the driving unit drives the rotating ring to rotate, the rotating ring drives the elastic pin to slide in the adjusting groove, so that the elastic pin drives the support block to expand or contract on the mounting block, thereby improving the convenience and accuracy of operation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the isometric view of the main embodiment of the present application, which mainly embodies the overall structure;

[0027] Figure 2is a local explosion view mainly embodying the cooperation relationship between the workpiece and the cylindrical seat in the first embodiment of the application;

[0028] Figure 3 is an axonometric view mainly embodying the overall structure in the second embodiment of the application.

[0029] Figure 4 is a structural view mainly embodying the cooperation relationship between the second positioning pin and the avoiding hole in the second embodiment of the application;

[0030] Figure 5 is a structural view mainly embodying the cooperation relationship between the limiting unit and the driving unit in the second embodiment of the application;

[0031] Reference signs: 1, main frame body; 11, slide rail; 2, installation mold; 21, installation block; 211, avoiding hole; 212, upper plate block; 2121, long hole; 213, lower plate block; 2131, connecting column; 2132, handle; 22, limiting unit; 221, cylindrical seat; 2211, adaptive groove; 222, rotating ring; 2221, elastic pin; 2222, driving unit; 22221, driving rod; 22222, connecting plate; 22223, hand lever; 2223, adjusting groove; 2224, connecting hole; 223, supporting block; 224, connecting seat; 3, pressing mechanism; 31, balancing plate; 311, limiting block; 3111, limiting groove; 312, guide rod; 313, telescopic rod; 32, pressing plate; 4, driving mechanism; DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 5 The application will be further described in detail.

[0033] The embodiment of the application discloses a pressing device.

[0034] Embodiment one;

[0035] Referring to Figure 1 A pressing device comprises a main frame body 1 and an installation mold 2 for fixing a workpiece, the installation mold 2 is fixed on the main frame body 1 through bolts, and the main frame body 1 is further provided with a pressing mechanism 3 for pressing the workpiece and a driving mechanism 4 for driving the pressing mechanism 3 to press down, in the embodiment, the driving mechanism 4 is arranged as a pneumatic cylinder, the pneumatic cylinder is arranged above the main frame body 1, and the pneumatic cylinder is connected to the main frame body 1 through bolts.

[0036] Referring to Figure 1, the pressing mechanism 3 includes a balance plate 31 and a pressing plate 32 for pressing the workpiece, and the cylinder is detachably connected with the balance plate 31. In the embodiment, a limiting block 311 for limiting the piston rod of the cylinder is connected with the balance plate 31 by bolts, and a limiting groove 3111 is arranged on the limiting block 311. The piston rod of the cylinder is inserted into the limiting groove 3111 of the limiting block 311, so that the piston rod can be easily assembled and disassembled by the worker, and the installation efficiency is improved.

[0037] With reference to Figure 1 , the pressing plate 32 is fixed on the balance plate 31 by bolts, and guide rods 312 for keeping balance during pressing are symmetrically arranged on the balance plate 31. One end of each guide rod 312 is welded on the balance plate 31, and the other end of each guide rod 312 penetrates through the main frame body 1 and is slidably connected with the main frame body 1. Thus, the piston rod of the cylinder can keep balance during work, and the balance plate 31 and the pressing plate 32 can also keep balance during pressing, so that the pressing effect of the pressing plate 32 is not affected by uneven force.

[0038] With reference to Figure 1 and Figure 2 , the installation mold 2 includes an installation block 21 and a limiting unit 22. The installation block 21 is fixed on the main frame body 1 by bolts. In the embodiment, two limiting units 22 are symmetrically arranged. Each limiting unit 22 is a hollow cylindrical seat 221. A workpiece cover is arranged on the cylindrical seat 221. Each cylindrical seat 221 is integrally formed on the installation block 21. The number and positions of the first positioning pins on each cylindrical seat 221 are matched with the number and positions of the matching grooves 2211. The first positioning pins are embedded in the matching grooves 2211. The lower surface of the first positioning pin is in abutting connection with the bottom surface of the matching groove 2211. Thus, the first positioning pin cannot be dislocated during pressing, and the accuracy and stability of the pressing process are improved.

[0039] With reference to Figure 1 and Figure 2 , the number and positions of the second positioning pins on the installation block 21 are matched with the number and positions of the avoiding holes 211. The second positioning pins are inserted into the avoiding holes 211. Thus, the avoiding holes 211 can avoid the downward movement of the second positioning pins during pressing of the workpiece by the pressing plate 32. The position of the workpiece can also be limited by the avoiding holes 211.

[0040] With reference to Figure 1 , the balance plate 31 and the main frame body 1 are symmetrically provided with telescopic rods 313. The upper ends of the telescopic rods 313 are welded on the balance plate 31, and the lower ends of the telescopic rods 313 are welded on the main frame body 1. The telescopic rods 313 can stably press the workpiece by the pressing plate 32, and can also assist in guiding during pressing.

[0041] The implementation principle of the embodiment of the present application is that the workers first clamp the first positioning needle and the second positioning needle on the workpiece respectively, then place the workpiece cover on the cylindrical seat 221, at the same time, the first positioning pin is in embedded fitting with the adaptive groove 2211, and the second positioning pin is in plug-in fitting with the avoiding hole 211, finally, the workers operate the cylinder to drive the balance plate 31 and the pressing plate 32 to press the workpiece downward, so that the first positioning pin is completely embedded into the installation groove of the workpiece.

[0042] Embodiment two:

[0043] The difference between embodiment two and embodiment one is that:

[0044] With reference to Figure 3 and Figure 4 , the mounting block 21 comprises an upper plate block 212 and a lower plate block 213, and connecting columns 2131 are welded at four corners of the lower plate block 213, and the end of any connecting column 2131 away from the lower plate block 213 is threadedly connected with the upper plate block 212.

[0045] With reference to Figure 5 , the limiting unit 22 is symmetrically provided with two, and since the structure and connection mode of the two limiting units 22 are the same, one of the limiting units 22 is taken as an example for description.

[0046] With reference to Figure 4 and Figure 5 , the limiting unit 22 comprises a rotating ring 222, a support block 223 and a connecting seat 224, the connecting seat 224 is welded on the lower plate block 213, and the rotating ring 222 is rotatably connected on the connecting seat 224, in this embodiment, the support block 223 is circumferentially arranged with three, the rotating ring 222 is provided with an elastic pin 2221 and a driving unit 2222, so that the driving unit 2222 drives the elastic pin 2221 to drive the support block 223 to expand outwardly or shrink inwardly on the upper plate block 212, then the workers can adjust the size of the support block 223 according to the need, so that the support block 223 can limit workpieces of different specifications.

[0047] With reference to Figure 4 and Figure 5The rotating ring 222 is provided with an adjusting groove 2223 which is inclined from the outer edge of the rotating ring 222 to the inner edge of the rotating ring 222, the elastic pins 2221 are arranged in correspondence with the positions and number of the supporting blocks 223, and one end of any elastic pin 2221 is slidably arranged in the adjusting groove 2223, and the other end of any elastic pin 2221 is welded with the supporting block 223, when the driving unit 2222 drives the rotating ring 222 to rotate, the rotating ring 222 drives the elastic pins 2221 to slide in the adjusting groove 2223, so that the elastic pins 2221 drive the supporting blocks 223 to expand or shrink on the upper plate 212, thereby improving the convenience and accuracy of operation.

[0048] With reference to Figure 5 The upper plate 212 is provided with long holes 2121 for avoiding the elastic pins 2221 in correspondence with the positions and number of the elastic pins 2221, that is, three long holes 2121 are arranged, the long holes 2121 can avoid the elastic pins 2221 during the sliding process of the elastic pins 2221, so that the elastic pins 2221 can drive the supporting blocks 223 to expand or shrink.

[0049] With reference to Figure 4 The avoiding holes 211 on the upper plate 212 are provided with three groups, each group is provided with three avoiding holes 211, during use, any second positioning pin is inserted and fixed with any avoiding hole 211 of a corresponding group, so that when the workers replace workpieces of different specifications, there is always a corresponding avoiding hole 211 on the upper plate 212 to avoid the position of the second positioning pin, thereby improving the convenience of operation.

[0050] With reference to Figure 5 The driving unit 2222 includes a driving rod 22221, a connecting plate 22222 and a hand lever 22223, the rotating ring 222 is provided with a connecting hole 2224, one end of the driving rod 22221 is in interference fit with the connecting hole 2224 of the rotating ring 222, the other end of the driving rod 22221 is welded with the connecting plate 22222, and the end of the connecting plate 22222 away from the driving rod 22221 is hinged with the hand lever 22223, so that the workers can use the hand lever 22223 to operate the driving rod 22221 on the connecting plate 22222 to move flexibly, and at the same time, the driving rod 22221 drives the rotating disc to rotate, thereby realizing the control of the expansion or shrink of the supporting blocks 223.

[0051] With reference to Figure 3 and Figure 4 The main frame body 1 is provided with slide rails 11 symmetrically, the lower plate 213 is in guiding sliding fit with the corresponding slide rails 11, when the lower plate 213 slides to the position directly below the pressing plate 32, the workers fix the lower plate 213 on the main frame body 1 by bolts, thereby realizing the limitation of the position of the lower plate 213.

[0052] Referring to Figure 3 and Figure 4 The lower plate 213 is welded with a handle 2132 facilitating workers to pull the lower plate 213. Workers pull the handle 2132 to drive the lower plate 213 to slide on the slide rail 11, which facilitates workers to install or move workpieces, prevents loss caused by accidental touch during the process of installing workpieces, and thus improves the convenience and safety of operation.

[0053] The implementation principle of the embodiment of the present application is as follows: workers first clamp the first positioning pin and the second positioning pin on the workpiece, then use the hand lever 22223 to operate the driving rod 22221 to drive the rotating disc to rotate, operate the driving rod 22221 according to the need to control the expansion or retraction of the support block 223, then place the workpiece cover on the cylindrical seat 221, at the same time, make the first positioning pin form embedded fitting with the corresponding adaptive slot 2211, and make the second positioning pin form plug-in fitting with the corresponding avoiding hole 211, and finally operate the cylinder to drive the balance plate 31 and the pressing plate 32 to press down the workpiece, so that the first positioning pin is completely embedded into the installation slot of the workpiece.

[0054] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A press fitting device characterized by comprising: The utility model provides a kind of installation mould (2) and main frame body (1) for fixing workpiece, the installation mould (2) is arranged on main frame body (1), and the main frame body (1) is also provided with the pressing mechanism (3) for pressing workpiece and the driving mechanism (4) for driving the pressing mechanism (3) to press down, the installation mould (2) is provided with the adaptive slot (2211) for forming embedded cooperation with first positioning pin, and the adaptive slot (2211) is arranged corresponding to the position of first positioning pin.

2. A press fitting device according to claim 1, characterized in that: The installation mould (2) includes an installation block (21) arranged on the main frame body (1) and a limiting unit (22) for fixing the workpiece, the limiting unit (22) is arranged on the installation block (21), and the installation block (21) is provided with an avoiding hole (211) for forming plug-in cooperation with a second positioning pin.

3. A press fitting device according to claim 2, characterized in that: The limiting unit (22) includes a rotating ring (222) and a support block (223) arranged on the installation block (21), a plurality of support blocks (223) are circumferentially arranged, the rotating ring (222) is provided with an elastic pin (2221) for connecting the support block (223) and a driving unit (2222) for driving the elastic pin (2221) to drive the support block (223) to expand or shrink, and the elastic pin (2221) is arranged corresponding to the position and number of the support block (223).

4. A press fitting device according to claim 3, wherein: The rotating ring (222) is provided with an adjusting groove (2223), the adjusting groove (2223) is arranged obliquely from the outer edge of the rotating ring (222) to the inner edge of the rotating ring (222), and the elastic pin (2221) is slidingly arranged in the adjusting groove (2223).

5. A press fitting device according to claim 2, wherein: The main frame body (1) is symmetrically provided with a sliding rail (11), and the installation block (21) forms a guided sliding fit with the sliding rail (11).

6. A press fitting device according to claim 1, characterized in that: The pressing mechanism (3) includes a balance plate (31) and a pressing plate (32) for pressing the workpiece, the balance plate (31) is arranged on the driving mechanism (4), the pressing plate (32) is arranged on the balance plate (31), and the balance plate (31) is symmetrically provided with a guide rod (312) for maintaining balance during pressing, and any guide rod (312) penetrates the main frame body (1) and forms a sliding fit with the main frame body (1).

7. A press fitting device according to claim 3, wherein: The driving unit (2222) includes a driving rod (22221), a connecting plate (22222) and a hand lever (22223), one end of the driving rod (22221) is connected with the rotating ring (222), the driving rod (22221) is connected with the connecting plate (22222), and the end of the connecting plate (22222) away from the driving rod (22221) is hinged with the hand lever (22223).

8. A press fitting device according to claim 5, wherein: The installation block (21) is provided with a handle (2132) for facilitating the worker to pull out the installation block (21).

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