Automatic thread rolling machine for external thread of bolt

Abstract

The present disclosure relates to the technical field of thread rolling machine, and one embodiment of the present disclosure provides a bolt body external thread automatic thread rolling machine, which comprises an equipment frame, a supporting seat arranged on the surface of the equipment frame, a rolling wheel arranged on the equipment frame, a driving assembly arranged between the rolling wheel and the equipment frame, a stand column fixed on the surface of the equipment frame, a blanking assembly arranged on the stand column, and a positioning assembly arranged in the equipment seat. The blanking assembly comprises a telescopic air cylinder fixed in the stand column, a plurality of movable rods movably sleeved on the upper end of the stand column, and a blanking box connected between the upper end of the movable rods and the output end of the telescopic air cylinder. Through the above technical solution, the technical problem that the bolt body needs to be manually placed on the workpiece supporting seat during processing, the position needs to be manually adjusted, continuous feeding cannot be performed, manual operation is dangerous, the continuity is low, and the processing efficiency is affected is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of thread rolling machine technology, and more specifically, to an automatic thread rolling machine for external threads of bolts. Background Technology

[0002] A bolt is a cylindrical threaded mechanical part fitted with a nut. It consists of two parts: a head and a shank (a cylinder with external threads). In the production process of bolts, the external threads of the bolt need to be processed by an automatic thread rolling machine. The thread rolling machine is a multi-functional cold extrusion forming machine tool that can perform thread rolling, straight running, and oblique running on workpieces in a cold state within its rolling pressure range. It can also perform rolling straightening, diameter reduction, burnishing, and various forming rolling processes on straight, oblique, and helical spline gears. Currently, automatic thread rolling machines usually require manual assistance when processing the external threads of bolts. For example, the placement and fixing of bolts, as well as the unloading of processed bolts, are all dangerous.

[0003] For example, the utility model disclosed in patent publication number CN217193104U discloses an automatic thread rolling machine for external threads of bolts. The drive box is activated, causing the drive mechanism to rotate two connecting shafts, which in turn rotates thread rolling wheels A and B. The bolt body is placed on the workpiece support. Then, the linear drive mechanism is activated, causing the sliding seat to move along a linear track towards the fixed seat. When thread rolling wheels B and A clamp the workpiece, they rotate the workpiece, thus achieving external thread rolling. After processing one bolt body, the linear drive mechanism is retracted and removed before processing the next bolt body. While this facilitates external thread processing on bolts, it requires manual adjustment of the bolt body's position when placing it on the workpiece support, making continuous feeding impossible. Manual operation is dangerous, and the low continuity affects processing efficiency.

[0004] Therefore, improvements have been made to address the aforementioned issues. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide an automatic thread rolling machine for external threads of bolts, which solves the technical problems in the prior art where the bolt body needs to be manually placed on the workpiece support during processing, and the position needs to be manually adjusted, making continuous feeding impossible, and manual operation is dangerous and has low continuity, affecting processing efficiency.

[0006] According to one aspect, at least one embodiment of this disclosure provides an automatic thread rolling machine for external threads of bolts, comprising:

[0007] Equipment rack and support base, wherein the support base is disposed on the surface of the equipment rack;

[0008] A pair of rolling rollers and a drive assembly, wherein the rolling rollers are mounted on the equipment frame and the drive assembly is disposed between the rolling rollers and the equipment frame;

[0009] The equipment includes a column and a feeding assembly, wherein the column is fixed to the surface of the equipment frame and the feeding assembly is mounted on the column.

[0010] A positioning component, wherein the positioning component is disposed within the device base;

[0011] The feeding assembly includes a telescopic cylinder, which is fixed inside the column. Several movable rods are movably connected to the upper end of the column, and the upper end of each movable rod is connected to a feeding box at the output end of the telescopic cylinder.

[0012] As a further technical solution, a rotating shaft is rotatably connected inside the feeding box. The rotating shaft is controlled to rotate by a motor. Several sets of pusher plates are provided on the rotating shaft. A notch is opened at the lower end of the feeding box. The notch has a semi-circular structure.

[0013] As a further technical solution, the positioning component includes a through groove, which is formed in the support base. A drive screw is rotatably connected in the through groove. The drive screw is controlled to rotate by a motor. Both ends of the drive screw are connected to moving blocks by threaded engagement.

[0014] As a further technical solution, a pair of guide rails are provided in the through groove, and the moving blocks are slidably connected to the guide rails. A support rod is rotatably connected to the upper end of the moving block through a pin, and a top frame is fixed to the upper end of the support rod.

[0015] As a further technical solution, an extension frame is provided on one side of the movable block, and a second cylinder is rotatably connected between the extension frame and the support rod via a pin.

[0016] As a further technical solution, the drive assembly includes a pair of hydraulic cylinders, which are fixed at both ends of the surface of the equipment frame. A pair of slide rails are provided at both ends of the inner surface of the equipment frame, and a movable frame is slidably connected to the pair of slide rails.

[0017] As a further technical solution, the movable frame is connected to the output end of the hydraulic cylinder, the rolling wheel is disposed inside the movable frame, and the rolling wheel is rotated by a motor.

[0018] As a further technical solution, the size of the top frame is smaller than the size of the top opening of the through slot.

[0019] As a further technical solution, the spacing between the pusher plates is matched with the diameter of the bolt raw material.

[0020] As a further technical solution, the drive screw has a double-segment thread structure, and the thread directions at both ends of the drive screw are opposite.

[0021] The beneficial effects of the embodiments disclosed herein are as follows:

[0022] 1. In this disclosure, a feeding assembly is provided. The cooperation of the telescopic cylinder and the movable rod realizes the stable lifting and lowering of the feeding box, which facilitates the adjustment of the feeding height. The design of the rotating shaft, the pusher plate and the notch enables the bolt raw material to fall into the support seat automatically and continuously, avoiding the danger of manual feeding and improving the feeding efficiency. The spacing of the pusher plate matches the diameter of the bolt raw material, ensuring the accuracy of each feeding.

[0023] 2. In this disclosure, a positioning component is provided, which is a combination of a drive screw, a moving block and a guide rail. This combination can precisely control the position of the top frame and realize the rapid positioning of the bolt material. The double-stage reverse thread structure of the drive screw can make the two moving blocks move synchronously in opposite directions, ensuring that the bolt material is accurately located in the processing position. The second cylinder can flexibly control the retraction and extension of the top frame without affecting the movement path of the bolt, which provides convenience for continuous processing and improves processing accuracy and efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0025] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0026] Figure 2 This is an isometric drawing of the present disclosure;

[0027] Figure 3 This is a cross-sectional view of the present disclosure;

[0028] Figure 4 This is another sectional view of the present disclosure;

[0029] Figure 5 Appendix to this disclosure Figure 4 Enlarged view of part A in the middle;

[0030] In the diagram: 1. Equipment frame; 2. Support base; 3. Rolling roller; 4. Column; 5. Feeding assembly; 5-1. Telescopic cylinder; 5-2. Movable rod; 5-3. Feeding box; 5-4. Rotating shaft; 5-5. Push plate; 5-6. Notch; 6. Positioning assembly; 6-1. Through slot; 6-2. Drive screw; 6-3. Moving block; 6-4. Guide rail; 6-5. Support rod; 6-6. Top frame; 6-7. Extension frame; 6-8. Second cylinder; 7. Drive assembly; 7-1. Hydraulic cylinder; 7-2. Slide rail; 7-3. Moving frame. Detailed Implementation

[0031] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0032] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0033] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0034] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] like Figures 1-5 As shown, it illustrates an automatic bolt external thread rolling machine according to an embodiment of the present disclosure, comprising:

[0038] Equipment frame 1 and support base 2, with support base 2 disposed on the surface of equipment frame 1;

[0039] A pair of rolling wheels 3 and a drive assembly 7, wherein the rolling wheels 3 are mounted on the equipment frame 1 and the drive assembly 7 is mounted between the rolling wheels 3 and the equipment frame 1;

[0040] The column 4 and the feeding component 5 are fixed on the surface of the equipment frame 1, and the feeding component 5 is set on the column 4.

[0041] Positioning component 6 is disposed inside the device base;

[0042] The feeding assembly 5 includes a telescopic cylinder 5-1, which is fixed inside the column 4. Several movable rods 5-2 are movably connected to the upper end of the column 4. The upper end of the movable rods 5-2 is connected to the output end of the telescopic cylinder 5-1 to a feeding box 5-3. A rotating shaft 5-4 is rotatably connected inside the feeding box 5-3. The rotating shaft 5-4 is controlled to rotate by a motor. Several sets of pusher plates 5-5 are provided on the rotating shaft 5-4. A notch 5-6 is opened at the lower end of the feeding box 5-3. The notch 5-6 has a semi-circular structure.

[0043] In some examples, to achieve continuous feeding, a feeding assembly 5 is designed. This assembly includes a telescopic cylinder 5-1 fixed inside the column 4. Several movable rods 5-2 are movably mounted on the upper end of the column 4. The upper ends of these movable rods 5-2 are connected to the feeding box 5-3 together with the output end of the telescopic cylinder 5-1. The telescopic cylinder 5-1 can control the vertical lifting height of the feeding box 5-3 and increase the connection stability through multiple movable rods 5-2. A rotating shaft 5-4 controlled by a motor is rotatably connected inside the feeding box 5-3. Several sets of push plates 5-5 are set on the rotating shaft 5-4. When the rotating shaft 5-4 rotates, the bolt will enter between the adjacent push plates 5-5. Continued rotation can push the bolt down and block the next bolt. This, together with the inclined surface inside the feeding box 5-3, forms an automatic feeding effect. The lower end of the feeding box 5-3 has a semi-circular notch 5-6. After falling onto the support base 2, it can pass through the notch 5-6.

[0044] like Figures 1-5 As shown, this embodiment proposes a positioning component 6 including a through groove 6-1, which is opened in the support base 2. A drive screw 6-2 is rotatably connected in the through groove 6-1. The drive screw 6-2 is controlled to rotate by a motor. Both ends of the drive screw 6-2 are connected to moving blocks 6-3 by threaded engagement. A pair of guide rails 6-4 are provided in the through groove 6-1. The moving blocks 6-3 are slidably connected to the guide rails 6-4. A support rod 6-5 is rotatably connected to the upper end of the moving block 6-3 by a pin. A top frame 6-6 is fixed to the upper end of the support rod 6-5. An extension frame 6-7 is provided on one side of the moving block 6-3. A second cylinder 6-8 is rotatably connected between the extension frame 6-7 and the support rod 6-5 by a pin.

[0045] In some examples, a positioning component 6 is designed to achieve rapid positioning of the bolt material. This component includes a through groove 6-1 formed in the support base 2. A drive screw 6-2, controlled by a motor, is rotatably connected within the through groove 6-1. Both ends of the drive screw 6-2 are threadedly connected to moving blocks 6-3. The drive screw 6-2 controls the movement of the two moving blocks 6-3. A pair of guide rails 6-4 are provided within the through groove 6-1, and the moving blocks 6-3 are slidably connected to the guide rails 6-4 to control the moving blocks 6-3 and ensure that the moving blocks 6-3 maintain a constant angle. The linear movement is achieved by connecting the upper end of the moving block 6-3 to the support rod 6-5 via a pin. The upper end of the support rod 6-5 is fixed with a top frame 6-6. The falling bolt material can be clamped by the two top frames 6-6, which can position one end of the bolt material in the processing position. An extension frame 6-7 is provided on one side of the moving block 6-3. The extension frame 6-7 and the support rod 6-5 are rotatably connected to the second cylinder 6-8 via a pin. The second cylinder 6-8 can pull the support rod 6-5, retracting the support rod 6-5 and the top frame 6-6 into the through groove 6-1 without affecting the movement path of the bolt.

[0046] like Figures 1-5 As shown, this embodiment proposes a drive assembly 7 including a pair of hydraulic cylinders 7-1, the hydraulic cylinders 7-1 being fixed at both ends of the surface of the equipment frame 1, and a pair of slide rails 7-2 being provided at both ends of the inner surface of the equipment frame 1, with a movable frame 7-3 slidably connected on the pair of slide rails 7-2, the movable frame 7-3 being connected to the output end of the hydraulic cylinders 7-1, and a rolling wheel 3 being disposed inside the movable frame 7-3, the rolling wheel 3 being rotated by a motor.

[0047] In some examples, a drive assembly 7 is designed to achieve stable movement of the rolling roller 3. This assembly includes a pair of hydraulic cylinders 7-1 fixed at both ends of the surface of the equipment frame 1. A pair of slide rails 7-2 are provided at both ends of the inner surface of the equipment frame 1. A movable frame 7-3 connected to the output end of the hydraulic cylinders 7-1 is slidably connected to the pair of slide rails 7-2. The rolling roller 3 is set inside the movable frame 7-3. The rolling roller is located in the middle position of the two slide rails 7-2. The hydraulic cylinders 7-1 are also in the middle position, which makes the operation of the rolling roller more stable.

[0048] For example, such as Figure 3 As shown, the dimensions of the top frame 6-6 are smaller than the top opening dimensions of the through slot 6-1.

[0049] In some examples, the smaller size of the top frame 6-6 allows it to be easily retracted into the through slot 6-1 without affecting other structures.

[0050] For example, such as Figure 1 As shown, the spacing between pusher plates 5-5 matches the diameter of the bolt material.

[0051] In some examples, each time the pusher plate rotates 5-5, it can be inserted at an angle between two bolt materials that are stuck together to ensure accurate feeding.

[0052] For example, such as Figure 4 As shown, the drive screw 6-2 has a double-segment thread structure, and the thread directions at both ends of the drive screw 6-2 are opposite.

[0053] In some examples, by using two opposite thread directions, the two moving blocks 6-3 can be controlled to move in opposite directions simultaneously, which can accurately position the bolt material at the machining position.

[0054] In actual use: The bolt material is placed into the feeding box 5-3. The telescopic cylinder 5-1 is activated to lower the feeding box 5-3 to a suitable height. The rotating shaft 5-4 rotates under the drive of the motor. The pusher plate 5-5 pushes the bolt material through the notch 5-6 and onto the top frame 6-6 of the support base 2. The drive screw 6-2 motor of the positioning component 6 is activated. The drive screw 6-2 rotates and drives the moving block 6-3 to move on the guide rail 6-4. The top frame 6-6 moves accordingly to position the bolt material. After positioning, the second cylinder 6-8 retracts and retracts the top frame 6-6 into the through slot 6-1. Then, the hydraulic cylinder 7-1 of the drive component 7 pushes the moving frame 7-3, bringing the rolling wheel 3 close to the bolt material. At the same time, the rolling wheel 3 motor starts, and the rolling wheel 3 rotates to perform external thread processing on the bolt material. After processing, the rolling wheel 3 retracts, and the feeding component 5 operates again to process the next batch.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An automatic thread rolling machine for external bolt threads, characterized in that, include: Equipment rack (1) and support base (2), the support base (2) being disposed on the surface of the equipment rack (1); A pair of rolling wheels (3) and a drive assembly (7), wherein the rolling wheels (3) are disposed on the equipment frame (1) and the drive assembly (7) is disposed between the rolling wheels (3) and the equipment frame (1); The column (4) and the feeding assembly (5) are provided on the column (4). The column (4) is fixed on the surface of the equipment frame (1), and the feeding assembly (5) is provided on the column (4). Positioning component (6), the positioning component (6) is disposed within the equipment rack (1); The feeding assembly (5) includes a telescopic cylinder (5-1), which is fixed inside the column (4). Several movable rods (5-2) are movably connected to the upper end of the column (4). The upper end of the movable rods (5-2) is connected to the output end of the telescopic cylinder (5-1) and a feeding box (5-3).

2. The automatic bolt external thread rolling machine according to claim 1, characterized in that, The feeding box (5-3) is rotatably connected to a rotating shaft (5-4), which is controlled to rotate by a motor. Several sets of pusher plates (5-5) are provided on the rotating shaft (5-4). The feeding box (5-3) has a notch (5-6) at the lower end, which is semi-circular in structure.

3. The automatic bolt external thread rolling machine according to claim 1, characterized in that, The positioning component (6) includes a through groove (6-1), which is formed in the support base (2). A drive screw (6-2) is rotatably connected in the through groove (6-1). The drive screw (6-2) is rotated by a motor. Both ends of the drive screw (6-2) are connected to moving blocks (6-3) by threaded engagement.

4. The automatic bolt external thread rolling machine according to claim 3, characterized in that, A pair of guide rails (6-4) are provided in the through groove (6-1). The moving blocks (6-3) are slidably connected to the guide rails (6-4). The upper end of the moving blocks (6-3) is rotatably connected to the support rod (6-5) through a pin. The upper end of the support rod (6-5) is fixed with a top frame (6-6).

5. The automatic bolt external thread rolling machine according to claim 4, characterized in that, An extension frame (6-7) is provided on one side of the movable block (6-3), and a second cylinder (6-8) is rotatably connected between the extension frame (6-7) and the support rod (6-5) via a pin.

6. The automatic bolt external thread rolling machine according to claim 1, characterized in that, The drive assembly (7) includes a pair of hydraulic cylinders (7-1), which are fixed at both ends of the surface of the equipment frame (1). A pair of slide rails (7-2) are provided at both ends of the inner surface of the equipment frame (1), and a movable frame (7-3) is slidably connected on the pair of slide rails (7-2).

7. The automatic bolt external thread rolling machine according to claim 6, characterized in that, The movable frame (7-3) is connected to the output end of the hydraulic cylinder (7-1), and the rolling wheel (3) is set inside the movable frame (7-3). The rolling wheel (3) is rotated by a motor.

8. The automatic bolt external thread rolling machine according to claim 4, characterized in that, The top frame (6-6) is smaller than the top opening size of the through slot (6-1).

9. The automatic bolt external thread rolling machine according to claim 2, characterized in that, The spacing between the pusher plates (5-5) is matched with the diameter of the bolt material.

10. The automatic bolt external thread rolling machine according to claim 3, characterized in that, The drive screw (6-2) has a double-segment thread structure, and the thread directions at both ends of the drive screw (6-2) are opposite.

Images