Flexible buffer joint of safe nut pushing and jacking device

Abstract

The utility model discloses a flexible buffering connector of a safe nut pushing and jacking device, which comprises a lifting groove, a connecting screw, a flexible column, a sleeve, a disc spring assembly, a pressing plate, a connecting piece and an adjusting screw, and a screw rod of the connecting screw penetrates through a step through hole in the back face of the lifting groove and is connected with the flexible column through internal and external threads. The flexible column, the disc spring assembly and the pressing plate are sequentially installed in the sleeve, the disc spring assembly is clamped between the flexible column and the pressing plate in a sleeved mode, the connecting piece is connected with the sleeve through the screw, the adjusting screw is installed in a threaded hole of the connecting piece and abuts against the pressing plate by screwing in threads, and then the pre-compression amount of the disc spring assembly is adjusted. The flexible column is in contact with the annular ball socket in the sleeve under the pre-pressure of the spring assembly, the connecting piece is fixed to a pushing rod of the safe nut pushing and jacking device, the nut is placed in the lifting groove, and the pushing rod pushes the flexible buffering connector to move along the surface of the punching machine till the cylindrical end of the nut is clamped and embedded in a lower die of the punching machine for end face closing.

Description

Technical Field

[0001] The present application relates to a nut safety pushing device, in particular to a flexible buffer joint of a nut safety pushing and pressing device. Background Art

[0002] As a kind of anti-loosening nut, the self-locking nut is widely used in the aviation field. However, in the related manufacturing industry, the production technology and equipment for nut closing are relatively backward. At present, the closing is mostly done by punching machine combined with closing die. The closing die is installed on the punching machine, and the cylindrical end of the hexagonal nut needs to be sent to the lower die of the closing die by a nail feeding device for positioning and pressing. After the punching machine drives the upper die to punch the cylindrical end of the hexagonal nut, the hexagonal nut leaves the punching machine. The existing nail feeding device does not have a buffer and automatic adjustment structure. When sending the nail to the end face of the lower die, it has a large impact force, which can easily lead to insufficient pressure on the nut or cause the nut to be misplaced or fall off, and the failure rate of nail feeding is relatively high. Therefore, there is an urgent need for a flexible buffer joint of a nut safe pushing and pressing device to solve the above problems. Summary of the invention

[0003] The purpose of the present application is to provide a flexible buffer joint for a nut safety pushing and pressing device. When the nut safety pushing nail device pushes the nut to the punching position, the joint can adaptively adjust the nut's posture when it is in place, and buffer the impact force when it is sent to the punching position to a certain extent, so as to avoid excessive reaction force resulting in insufficient pressure on the nut or causing the nut to be misplaced or fall off, thereby greatly improving the success rate and accuracy of the nut's placement.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme to achieve it: a flexible buffer joint of a nut safe pushing and pressing device, including a lifting groove, a connecting screw, a flexible column, a sleeve, a disc spring assembly, a pressure plate, a connecting piece, and an adjusting screw. The flexible column is a hollow column structure with an internal thread, and the rear end has an annular spherical surface and a positioning ring. The nail rod of the connecting screw passes through the step through hole on the back of the lifting groove and is connected to the flexible column by internal and external threads. The annular spherical surface, the disc spring assembly, and the pressure plate of the flexible column are installed in sequence inside the sleeve. The disc spring assembly is sleeved on the positioning ring of the flexible column and clamped between the annular spherical surface of the flexible column and the pressure plate. The connecting piece and the sleeve are connected by Screw connection, the adjusting screw is installed in the threaded hole of the connecting piece and presses the pressure plate by screwing into the thread, thereby adjusting the pre-compression amount of the disc spring assembly. The annular spherical surface of the flexible column contacts the annular ball socket in the sleeve under the pre-pressure of the spring assembly, and a certain range of posture adjustment can be performed in the annular ball socket. A certain gap is reserved between the lower surface of the nail head of the connecting screw and the end face of the step through hole of the lifting groove for buffering. The connecting piece is fixed on the pushing rod of the nut safety pushing and pressing device, and the nut is placed in the lifting groove. The pushing rod pushes the flexible buffer joint to move along the punch bed until the cylindrical end of the nut is embedded in the lower die of the punch to close the end face.

[0005] The lifting groove is a block structure, with a groove following the shape of the hexagonal nut arranged inside, the front side of the groove is open, and a step through hole is arranged on the rear side wall for the connecting screw to slide.

[0006] The flexible column is a hollow column structure with an internal thread, and the right end is provided with an annular spherical surface with a flat right side. The rear end of the annular spherical surface is provided with a positioning ring of a series disc spring assembly for installing and positioning the disc spring assembly;

[0007] The sleeve is a T-shaped hollow column structure with a square flange at the rear end and an annular ball socket structure inside the front end that cooperates with the annular spherical surface of the flexible column. The diameter of the opening at the center of the front end surface is larger than the outer diameter of the left side of the flexible column and is used for the deflection of the flexible column.

[0008] The pressure plate is a circular pancake-shaped structure with a flexible column positioning ring in the middle to avoid a depression. The outer diameter of the pressure plate matches the inner diameter of the sleeve. The outer diameter of the pressure plate and the outer diameter of the depression match the inner and outer diameters of the disc spring assembly, and are used to limit the disc spring assembly.

[0009] The connecting piece is a square hollow structure, the front end face is consistent with the square flange size of the sleeve 4, and is used to connect the sleeve. The hole at the center of the rear end face is used to connect with the push rod of the nut safety push nail device.

[0010] Beneficial effects: The present application provides a flexible buffer joint for a nut safety pushing and pressing device. When the nut safety pushing nail device pushes the nut to the lower cutting position of the punch press, the joint realizes adaptive adjustment of the product's posture through the structural form of an annular spherical ball socket combined with a disc spring assembly. The disc spring assembly, the reserved gap and the adjustment screw limit the buffering amount of the joint when the product is in place, so as to avoid the reaction force being too large, resulting in insufficient pressure on the nut, causing the nut to be misplaced or fall off. The device is small in size, light in weight, and ingenious in structure, which greatly improves the success rate and accuracy of the nut placement, escorts on-site production, and can be directly promoted to the safe pushing device for nut closing in the aviation manufacturing industry.

[0011] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Flexible buffer joint installation diagram

[0013] Figure 2 Flexible buffer joint structure diagram

[0014] Figure 3 Internal structure diagram of flexible buffer joint

[0015] Explanation of numbers in the figure: 1 lifting bracket; 2 connecting screw; 3 flexible column; 4 sleeve; 5 disc spring assembly; 6 pressure plate; 7 connecting piece; 8 adjustment screw; 9 flexible buffer joint; 10 punch; 11 nut safety push-pull device. DETAILED DESCRIPTION

[0016] See also Figure 1-3 A flexible buffer joint of a nut safety push-pushing device, comprising a lifting groove 1, a connecting screw 2, a flexible column 3, a sleeve 4, a disc spring assembly 5, a pressure plate 6, a connecting piece 7, and an adjusting screw 8; the flexible column 3 is a hollow column structure with an internal thread, and the rear end is provided with an annular spherical surface and a positioning ring; the nail rod of the connecting screw 2 passes through the step through hole on the back of the lifting groove 1 and is connected to the flexible column 3 by internal and external threads, the annular spherical surface of the flexible column 3, the disc spring assembly 5, and the pressure plate 6 are sequentially installed inside the sleeve 4, the disc spring assembly 5 is sleeved on the positioning ring of the flexible column 3, and is clamped between the annular spherical surface of the flexible column 3 and the pressure plate 6; the connecting piece 7 is connected to the sleeve 4 by screws, and the adjusting screw 8 It is installed in the threaded hole of the connecting piece 7 and presses the pressure plate 6 by screwing into the thread, so as to adjust the pre-compression amount of the disc spring assembly 5. The annular spherical surface of the flexible column 3 contacts the annular ball socket in the sleeve 4 under the pre-pressure of the spring assembly 5, and a certain range of posture adjustment can be performed in the annular ball socket. A certain gap is reserved between the lower surface of the nail head of the connecting screw 2 and the end face of the stepped through hole of the lifting groove 1 for buffering. The connecting piece 7 is fixed on the pushing rod of the nut safety pushing and pressing device 11, and the nut is placed in the lifting groove 1. The pushing rod pushes the flexible buffer joint 9 to move along the bed surface of the punch 10 until the cylindrical end of the nut is embedded in the lower mold of the punch 10 for end face closing.

[0017] The lifting groove 1 is a block structure, and a groove with the shape of a hexagonal nut is provided inside. The front side of the groove is open, and a step through hole is provided on the rear side wall for the connecting screw 2 to slide.

[0018] The flexible column 3 is a hollow column structure with an internal thread, and the right end has an annular spherical surface with a flat right side. The rear end of the annular spherical surface is provided with a positioning ring of a series disc spring assembly 5 for installing and positioning the disc spring assembly 5.

[0019] The sleeve 4 is a T-shaped hollow column structure with a square flange at the rear end and an annular ball socket structure inside the front end that matches the annular spherical surface of the flexible column 3. The diameter of the opening at the center of the front end surface is larger than the outer diameter of the left side of the flexible column 3 and is used for the deflection of the flexible column 3.

[0020] The pressure plate 6 is a circular pancake-shaped structure with a flexible column 3 positioning ring in the middle to avoid a depression. The outer diameter of the pressure plate 6 is consistent with the inner diameter of the sleeve 4. The outer diameter of the pressure plate 6 and the outer diameter of the depression match the inner and outer diameters of the disc spring assembly 5, which is used to limit the disc spring assembly 5.

[0021] The connecting piece 7 is a square hollow structure. The front end face is consistent with the square flange size of the sleeve 4 and is used to connect the sleeve 4. The hole in the center of the rear end face is used to connect with the push rod of the nut safety push nail device. The hollow structure plays a role in weight reduction and avoids space for the installation of screws and adjustment screws.

Claims

1. A flexible buffer joint for a nut safety push-pushing device, characterized in that It includes a lifting groove, a connecting screw, a flexible column, a sleeve, a disc spring assembly, a pressure plate, a connecting piece, and an adjusting screw. The flexible column is a hollow column structure with an internal thread, and the rear end is provided with an annular spherical surface and a positioning ring. The nail rod of the connecting screw passes through the step through hole on the back of the lifting groove and is connected to the flexible column through internal and external threads. The annular spherical surface, the disc spring assembly, and the pressure plate of the flexible column are sequentially installed inside the sleeve. The disc spring assembly is sleeved on the positioning ring of the flexible column and clamped between the annular spherical surface of the flexible column and the pressure plate. The connecting piece is connected to the sleeve by a screw, and the adjusting screw is installed in the threaded hole of the connecting piece through Screw in the thread to press the pressure plate, and then adjust the pre-compression amount of the disc spring assembly. The annular spherical surface of the flexible column contacts the annular ball socket in the sleeve under the pre-pressure of the spring assembly, and a certain range of posture adjustment can be performed in the annular ball socket. A certain gap is reserved between the lower surface of the nail head of the connecting screw and the end face of the step through hole of the lifting groove for buffering. The connecting part is fixed on the pushing rod of the nut safety pushing and pressing device, and the nut is placed in the lifting groove. The pushing rod pushes the flexible buffer joint to move along the punch bed until the cylindrical end of the nut is embedded in the lower die of the punch to close the end face.

2. A flexible buffer joint for a nut safety pushing and pressing device according to claim 1, characterized in that The lifting groove is a block structure, with a groove in the shape of a hexagonal nut arranged inside, the front side of the groove is open, and a step through hole is arranged on the rear side wall for the connecting screw to slide.

3. A flexible buffer joint for a nut safety pushing and pressing device according to claim 1, characterized in that The flexible column is a hollow column structure with an internal thread, and the right end has an annular spherical surface with a flat right side. The rear end of the annular spherical surface is provided with a positioning ring connected in series with the disc spring assembly for installing and positioning the disc spring assembly.

4. A flexible buffer joint for a nut safety pushing and pressing device according to claim 1, characterized in that The sleeve is a T-shaped hollow column structure with a square flange at the rear end and an annular ball socket structure inside the front end that matches the annular spherical surface of the flexible column. The diameter of the opening at the center of the front end surface is larger than the outer diameter of the left side of the flexible column and is used for the flexible column to deflect.

5. The flexible buffer joint of the nut safety pushing and pressing device according to claim 1 is characterized in that The pressure plate is a circular pancake-shaped structure with a flexible column positioning ring in the middle to avoid a depression. The outer diameter of the pressure plate is consistent with the inner diameter of the sleeve. The outer diameter of the pressure plate and the outer diameter of the depression match the inner and outer diameters of the disc spring assembly and are used to limit the disc spring assembly.

6. A flexible buffer joint for a nut safety pushing and pressing device according to claim 1, characterized in that The connecting piece is a square hollow structure, the front end surface is consistent with the square flange size of the sleeve, and is used to connect the sleeve. The hole at the center of the rear end surface is used to connect with the push rod of the nut safety push nail device.

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