Slotted lining forming device

Abstract

The utility model discloses a slotted lining forming device, which belongs to the technical field of slotted lining production and comprises a frame, and a driving mechanism, a clamping component, a forming component and a cutting component which are sequentially arranged on the same side of the frame, the rack comprises a working face, and the driving mechanism is arranged along the working face and used for driving the strip to move along the side face of the rack. The clamping assembly comprises a first ejector block and a second ejector block which are located on the two sides of the working face respectively and arranged on the rack in a sliding mode. The forming assembly comprises a forming block located on one side of the working face and arranged on the rack in a sliding mode. The cutting assembly comprises a first cutter and a second cutter which are located on the two sides of the working face respectively and arranged on the machine frame in a sliding mode. The forming direction of the slotting lining forming device is the length direction of the rack, compared with an existing production device, the occupied space and the operation space in the transverse direction are saved, production can be conveniently carried out in a long and narrow zone, and an operator only needs to carry out operation on one side of the rack.

Description

Technical Field

[0001] The utility model relates to the technical field of slotted bushing production, in particular to a slotted bushing forming device. Background Art

[0002] The cold extrusion strengthening technology of slotted bushings has the characteristics of large interference, strong operability and high extrusion quality. It can significantly improve the fatigue life of the fastening holes of structural parts, and can also effectively improve its resistance to stress corrosion and corrosion fatigue. It has been widely used in the strengthening of aircraft fastening holes and has achieved good results. The slotted bushing is an important component in the cold extrusion strengthening technology of slotted bushings. In the process of cold extrusion strengthening of slotted bushings, due to the use of slotted bushings, the damage of the hole during the extrusion process and the accumulation of extrusion port materials are avoided, the tension of the extrusion mandrel is reduced, and the radial extrusion deformation is efficiently transferred to the hole wall, ensuring the tangential residual compressive stress in the hole. Therefore, the slotted bushing is a key factor in ensuring its cold extrusion strengthening effect and quality.

[0003] At present, the slit bushing is usually formed by auxiliary rolling with a core rod, or by automatic guiding without a core rod. In the continuous production process of the slit bushing, multiple functional mechanisms are arranged on the same frame to realize the production of the slit bushing in multiple processes on the same frame. For example, Chinese patent CN114535411A discloses a slit bushing manufacturing device and method, which acts on the strip in a certain order through a pressing block, a lower cutter, an upper cutter, and a forming pressing block, so that the strip is rolled on a rigid core rod. After the strip is rolled on the rigid core rod, it is cut to form a slit bushing. However, since the extension direction of the strip is perpendicular to the frame, the conveying mechanism is located on the back side of the frame, and the functional components such as the pressing block, the lower cutter, the upper cutter, and the forming pressing block are arranged on the front side of the frame, so that the entire slit bushing manufacturing device requires a large space in the horizontal and vertical directions, so that the entire device occupies a large area, which is not convenient for the production of slit bushings in a narrow and long area. Utility Model Content

[0004] The utility model aims to provide a slotted bushing forming device to solve the problem that the existing slotted bushing production device occupies a large space and is not convenient for production in a narrow and long place.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A slotted bushing forming device comprises: a frame, and a driving mechanism, a clamping assembly, a forming assembly and a cutting assembly which are sequentially arranged on the same side of the frame;

[0007] The frame includes a working surface, and a driving mechanism is arranged along the working surface for driving the strip to move along the side of the frame;

[0008] The clamping assembly comprises a first top block and a second top block respectively located on both sides of the working surface and slidably arranged on the frame, and the first top block and the second top block slide to clamp the strip;

[0009] The forming assembly includes a forming block located at one side of the working surface and slidably arranged on the frame, and the forming block abuts against the end of the strip after sliding, and is used for rolling and forming the strip;

[0010] The cutting assembly comprises a first cutter and a second cutter which are respectively located at two sides of the working surface and slidably arranged on the frame. The first cutter and the second cutter slide to cut the rolled strip to form a slit bushing.

[0011] Furthermore, the forming block is provided with a guide surface for guiding the end of the strip.

[0012] Furthermore, the guide surface is an inclined surface, an outer convex arc surface or an inner concave arc surface.

[0013] Furthermore, the above-mentioned forming assembly also includes a mounting block that slidably cooperates with the frame. The forming block is connected to the mounting block through a locking rotation mechanism to adjust the angle between the guide surface and the strip to adjust the size of the inner hole of the slit bushing.

[0014] Furthermore, the locking rotation mechanism is a rotating shaft with a locking function.

[0015] Furthermore, the above-mentioned forming assembly also includes a support block slidably arranged on the frame, the support block and the installation block are respectively located on both sides of the working surface, and the support block and the installation block are matched with mortise and tenon joints after sliding.

[0016] Furthermore, the support block and the first cutter are respectively located on two sides of the working surface, and the support block and the first cutter clamp the strip after sliding.

[0017] Furthermore, a shear block for extending into between the rolled cylinder and the strip is provided on the side of the top of the first cutter away from the driving mechanism, the top of the shear block is flush with the top of the first cutter, the shear block is provided with a first cutting edge, and the bottom of the second cutter is provided with a second cutting edge, and after the first cutter and the second cutter slide, the first cutting edge and the second cutting edge cooperate to cut the strip.

[0018] Furthermore, the sliding direction of the second cutter is perpendicular to the working surface or inclined to the working surface.

[0019] Furthermore, the driving mechanism is a roller conveying mechanism.

[0020] The utility model has the following beneficial effects:

[0021] (1) The forming direction of the slit bushing forming device of the utility model is the length direction of the frame, that is, the conveying direction of the strip is conveyed along the same side of the frame. Compared with the existing production device, it saves the space and operation space in the lateral direction, and is convenient for production in narrow and long areas. Moreover, the operator only needs to perform production, processing, debugging, installation, maintenance and other operations on one side of the frame, which is convenient for the operator to operate and observe.

[0022] (2) The forming block of the utility model is adjustable by rotation, so that the angle between the guide surface and the strip can be adjusted. The change of the angle can adjust the size of the inner hole of the slotted bushing, thereby adapting to the production of slotted bushings of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a slotted bushing forming device according to Embodiment 1 of the utility model;

[0024] Figure 2 This is a schematic structural diagram of a molding assembly according to Embodiment 1 of the present utility model;

[0025] Figure 3 for Figure 1 A magnified view of part A;

[0026] Figures 4 to 8 The present invention is a schematic diagram of a process for producing a slit bushing using the slit bushing forming device of Example 1 of the present invention, wherein: Figure 4 This is a schematic diagram of conveying strip material. Figure 5 is a schematic diagram of the clamping assembly 30 clamping a strip, Figure 6 This is a schematic diagram of strip rolling. Figure 7 This is a schematic diagram of the strip after coiling. Figure 8 It is a schematic diagram of cutting strip;

[0027] Fig. 9 This is a schematic structural diagram of the slit bushing forming device of Example 2 of the utility model.

[0028] In the figure: 10-frame; 11-working surface; 20-driving mechanism; 30-clamping assembly; 31-first top block; 32-second top block; 40-forming assembly; 41-forming block; 42-guide surface; 43-mounting block; 44-support block; 50-cutting assembly; 51-first cutter; 52-second cutter; 60-strip; 511-shear block. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] Embodiment 1:

[0031] Please refer to Figure 1 and Figure 2 The present embodiment provides a slotted bushing forming device, comprising: a frame 10, a driving mechanism 20, a clamping assembly 30, a forming assembly 40 and a cutting assembly 50. The frame 10 is vertically arranged, and has a working surface 11 located in a horizontal position. The strip 60 moves along the working surface 11 and parallel to the frame 10 and the working surface 11 on one side of the frame 10. The driving mechanism 20, the clamping assembly 30, the forming assembly 40 and the cutting assembly 50 are sequentially arranged on the same side of the frame 10 along the moving direction of the strip 60, and are respectively used for driving, clamping, forming and cutting the strip 60. Since the strip 60 moves along one side of the frame 10 and produces the slotted bushing, compared with the existing production device, the space occupied and the operating space in the lateral direction are saved, which is convenient for production in a narrow and long area, and the operator only needs to perform production, processing, debugging, installation, maintenance and other operations on one side of the frame 10, so as to facilitate the operation and observation of the operator.

[0032] Since one side of the strip 60 has a coating, when rolling, the side of the strip 60 having the coating is rolled inside, that is, the inner side of the formed slit bushing has a coating.

[0033] The driving mechanism 20 adopts an existing driving method that can drive the strip 60 to move, such as a roller conveying mechanism, which drives the strip 60 to move back and forth through the rotation of multiple pairs of rollers. The specific structure belongs to the existing technology and will not be repeated here.

[0034] The clamping assembly 30 includes a first top block 31 and a second top block 32, which are respectively located on both sides of the working surface 11, and are slidably arranged on the frame 10. After sliding, the first top block 31 and the second top block 32 can abut against the strip 60, and are used to clamp and limit the strip 60 (without affecting the movement of the strip 60). The sliding direction of the first top block 31 and the second top block 32 can be perpendicular to the working surface 11, or have a certain angle with the working surface 11, depending on the specific installation space and installation requirements. In this embodiment, the first top block 31 and the second top block 32 are symmetrical about the working surface 11, and this arrangement can better clamp and limit the strip 60.

[0035] The molding assembly 40 includes a mounting block 43 and a supporting block 44, both of which are vertically arranged. The mounting block 43 and the supporting block 44 are respectively located on both sides of the working surface 11, and the mounting block 43 and the supporting block 44 are respectively slidably arranged on the frame 10. After sliding, the mounting block 43 and the supporting block 44 abut against each other, so that the supporting block 44 has a supporting effect on the mounting block 43, thereby improving the stability of the mounting block 43.

[0036] Preferably, the mounting block 43 and the support block 44 are matched with mortise and tenon joints when abutting against each other, ensuring that the support block 44 supports the mounting block 43 not only in the axial direction but also in the moving direction of the strip 60 , thereby effectively ensuring the stability of the mounting block 43 .

[0037] The forming block 41 is mounted on the mounting block 43, and a guide surface 42 is provided on the side of the forming block 41 close to the clamping assembly 30. After the forming block 41 moves with the mounting block 43, the guide surface 42 is opposite to the end of the strip 60. During the movement of the strip 60, it is blocked by the guide surface 42, and is gradually rolled into a cylinder. The guide surface 42 can be any structure that can roll the strip 60 into a cylinder, such as an inclined surface, an outer convex arc surface, or an inner concave arc surface.

[0038] In this embodiment, the forming block 41 is connected to the mounting block 43 through a locking rotating mechanism, that is, the forming block 41 can rotate on the mounting block 43, and can be locked after the rotation is completed, so as to adjust the angle between the guide surface 42 and the strip 60 (when the guide surface 42 is arc-shaped, the angle is the angle between the strip 60 and the tangent of the contact position between the guide surface 42 and the strip 60), so as to adjust the size of the inner hole of the slotted bushing. The locking rotating mechanism can adopt a structure that can be locked after any rotation is completed, such as a rotating shaft plus a nut structure, the forming block 41 is rotatably connected to the mounting block 43 through the rotating shaft, the nut is spirally arranged on the rotating shaft, and the rotating shaft is locked by the nut; another example is a rotating shaft plus a tightening screw structure, the forming block 41 is rotatably connected to the mounting block 43 through the rotating shaft, the tightening screw is threadedly connected to the mounting block 43, and its tail is tightly against the rotating shaft.

[0039] The cutting assembly 50 includes a first cutter 51 and a second cutter 52 both vertically arranged. The first cutter 51 and the second cutter 52 are respectively located on both sides of the working surface 11, and the first cutter 51 and the second cutter 52 are respectively slidably arranged on the frame 10, and the sliding directions are both vertical directions, that is, the sliding directions are both perpendicular to the working surface 11. Figure 3 A shear block 511 is provided on the side of the top of the first cutter 51 away from the driving mechanism. The shear block 511 is used to extend between the rolled cylinder and the strip. A first cutting edge is provided on the top of the shear block 511, and a second cutting edge is provided on the bottom of the second cutter 52. After the first cutter 51 and the second cutter 52 slide, the first cutting edge and the second cutting edge approach each other to cut the strip 60. Since the shear block 511 is located between the rolled cylinder and the strip 60 during shearing, no straight edge section will appear at the curling edge of the slit bushing after cutting, thereby ensuring the molding quality of the slit bushing.

[0040] In this embodiment, since the sliding direction of the second cutter 52 is the vertical direction, the second cutter 52 is perpendicular to the working surface 11 at this time, so that the strip 60 is cut.

[0041] In this embodiment, the first cutter 51 and the support block 44 are respectively located on both sides of the working surface 11. After the first cutter 51 and the support block 44 slide, they clamp and limit the strip 60, and the support block 44 also supports the first cutter 51 to prevent the first cutter 51 from shaking. Obviously, in order to facilitate the shear block 511 to extend between the rolled cylinder and the strip, the sliding direction of the first cutter 51 can also be inclined to the working surface 11, ensuring that the shear block 511 can smoothly extend between the rolled cylinder and the strip 60, and the first cutter 51 and the support block 44 can clamp and limit the strip 60.

[0042] In this embodiment, the first top block 31, the second top block 32, the forming block 41, the mounting block 42, the first cutter 51 and the second cutter 52 are respectively slidably matched with the frame 11 through a sliding mechanism. The sliding mechanism adopts an existing slider and a slide groove matching mechanism. Each component is installed on the slider, and the slide groove is set on the frame 10. The driving method of the sliding mechanism can be motor drive, hydraulic drive, etc.

[0043] Please refer to 4 to Figure 8 The process of manufacturing the slit bushing by the slit bushing forming device of this embodiment includes the following steps:

[0044] (1) The drive mechanism 20 drives the strip 60 to move to the set winding starting position (see Figure 4 ).

[0045] (2) The first top block 31 and the second top block 32 slide synchronously to clamp and limit the strip 60 (see Figure 5 ).

[0046] (3) The forming block 41 slides with the mounting block 43, so that the guide surface 42 approaches the end of the strip 60, and at the same time the support block 44 slides and cooperates with the mortise and tenon joints of the mounting block 43 (see Figure 6 ).

[0047] (4) The driving mechanism 20 drives the strip 60 to move forward, and the strip 60 is rolled into a cylinder under the obstruction of the guide surface 42 (see Figure 7 ).

[0048] (5) The first top block 31, the second top block 32, the mounting block 43 and the supporting block 44 slide in the opposite direction to their initial positions.

[0049] (6) The driving mechanism 20 drives the strip 60 to continue moving forward until it moves to the set cutting position.

[0050] (7) The first cutter 51 and the support block 44 slide synchronously to clamp the strip 60. During the clamping process, the strip may not move, and the shear block 511 directly extends between the rolled cylinder and the strip 60. The strip may also move in the following manner: first move forward a certain distance, and after the first cutter 51 and the support block 44 clamp the strip 60, the strip 60 moves in the opposite direction to the set cutting position. At this time, the shear block 511 extends horizontally between the rolled cylinder and the strip 60. At the same time, the second cutter 52 moves to cut the rolled portion of the strip 60, and the cut portion is the slit bushing (please refer to Figure 8 ).

[0051] (8) The first cutter 51, the second cutter 52 and the support block 44 slide in the opposite direction to their initial positions.

[0052] (9) The driving mechanism 20 drives the strip 60 to move in the reverse direction to the set rolling starting position.

[0053] (10) Repeat steps (2) to (9) to complete the continuous production of the slit bushing.

[0054] Embodiment 2:

[0055] Please refer to Fig. 9 The difference between this embodiment and embodiment 1 is that the second cutter 52 of this embodiment is inclined to the working surface 11, so as to bevel the strip 60. Preferably, the top of the second cutter 52 is away from the driving mechanism 20, and the bottom of the second cutter is close to the driving mechanism 20. This inclined setting makes it difficult for the slit bushing to form a straight edge segment after cutting.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slotted bushing forming device, characterized in that: include: A frame (10), and a driving mechanism (20), a clamping assembly (30), a forming assembly (40), and a cutting assembly (50) which are sequentially arranged on the same side of the frame (10); The frame (10) comprises a working surface (11), and the driving mechanism (20) is arranged along the side of the frame (10) and is used to drive the strip to move along the side of the frame (10); The clamping assembly (30) comprises a first top block (31) and a second top block (32) respectively located on both sides of the working surface (11) and slidably arranged on the frame (10), and the first top block (31) and the second top block (32) clamp the strip after sliding; The forming assembly (40) comprises a forming block (41) located at one side of the working surface (11) and slidably arranged on the frame (10); the forming block (41) abuts against the end of the strip after sliding, and is used for rolling and forming the strip; The cutting assembly (50) comprises a first cutter (51) and a second cutter (52) respectively located on both sides of the working surface (11) and slidably arranged on the frame (10); the first cutter (51) and the second cutter (52) slide to cut the rolled strip to form a slit bushing.

2. The slotted bushing forming device according to claim 1, characterized in that: The forming block (41) is provided with a guide surface (42) for guiding the end of the strip.

3. The slotted bushing forming device according to claim 2, characterized in that: The guide surface (42) is an inclined surface, an outer convex arc surface or an inner concave arc surface.

4. The slotted bushing forming device according to claim 2, characterized in that: The molding assembly (40) further comprises a mounting block (43) which is slidably matched with the frame (10); the molding block (41) is connected to the mounting block (43) via a locking rotation mechanism, and is used to adjust the angle between the guide surface (42) and the strip material, so as to adjust the size of the inner hole of the slotted bushing.

5. The slotted bushing forming device according to claim 4, characterized in that: The locking type rotating mechanism is a rotating shaft with a locking function.

6. The slotted bushing forming device according to claim 4, characterized in that: The molding assembly (40) further comprises a support block (44) slidably arranged on the frame (10); the support block (44) and the mounting block (43) are respectively located on two sides of the working surface (11); and the support block (44) and the mounting block (43) are matched with mortise and tenon joints after sliding.

7. The slotted bushing forming device according to claim 6, characterized in that: The support block (44) and the first cutter (51) are respectively located on two sides of the working surface (11); the support block (44) and the first cutter (51) clamp the strip after sliding.

8. The slotted bushing forming device according to claim 7, characterized in that: A shear block (511) is provided on the side of the top of the first cutter (51) away from the driving mechanism (20) for extending between the rolled cylinder and the strip. The top of the shear block (511) is flush with the top of the first cutter (51). The shear block (511) is provided with a first cutting edge. The bottom of the second cutter (52) is provided with a second cutting edge. After the first cutter (51) and the second cutter (52) slide, the first cutting edge cooperates with the second cutting edge to cut the strip.

9. The slotted bushing forming device according to claim 8, characterized in that: The sliding direction of the second cutting knife (52) is perpendicular to the working surface (11) or inclined to the working surface (11).

10. The slotted bushing forming device according to any one of claims 1 to 9, characterized in that: The driving mechanism (20) is a roller-type conveying mechanism.

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