Automatic thread rolling machine for external threads of bolt body

Abstract

The utility model relates to the technical field of automatic thread rolling machines, and provides a bolt external thread automatic thread rolling machine which comprises a workbench, a supporting column is fixedly connected to the bottom of the workbench, a thread rolling mold is arranged on the top of the workbench, and a bolt fixing mechanism is arranged on the top of the workbench. According to the automatic thread rolling device for the bolt, through mutual cooperation of the motor, the hydraulic cylinder, the fixed arc plate and other components of the bolt fixing mechanism, when automatic thread rolling needs to be carried out on the bolt, a worker places the bolt to be machined on the supporting plate, then the motor is started, and a push rod extrudes a stress rod in the moving process; according to the technical scheme, the hydraulic rod moves to drive the fixing arc plate to move, the fixing arc plate moves to fix and limit the bolt on the supporting plate, after machining is completed, the fixing arc plate is reset through the reset spring, and fixing of the bolt is relieved. The technical problem that in the prior art, a machined bolt cannot be fixed is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of automatic 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 that is 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 spur gears, helical gears, and helical spline gears.

[0003] According to a public disclosure (publication number: CN 221133905U), an automatic external thread rolling machine for bolts includes a worktable, thread rolling wheels, a conveyor belt, a mounting plate, bolt supports, a push block, and a collection box. Two thread rolling wheels are moved and rotated on the upper side of the worktable via a drive assembly. The conveyor belt is driven between the two thread rolling wheels via a conveying mechanism. Bolt supports are detachably mounted on each mounting plate, and each bolt support has a placement groove containing a frosted pad. The mounting plate also has a mounting groove matching the bolt supports. The push block is lifted and lowered on the lower side of one of the mounting plates via a push assembly, and a push port matching the push block is provided at the mounting groove. Two collection boxes are detachably mounted on both sides of the worktable.

[0004] In the aforementioned application, the cooperation between the thread rolling wheel and the conveyor belt assembly makes it difficult to fix the bolt when it is being processed on the bolt support. This can lead to displacement or detachment of the bolt during processing, resulting in inaccurate thread processing. Therefore, we propose an automatic external thread rolling machine for bolts. Utility Model Content

[0005] To overcome the above-mentioned defects, embodiments of this disclosure provide an automatic bolt external thread rolling machine, which solves the problem of fixing the processed bolts in related technologies.

[0006] According to one aspect, at least one embodiment of this disclosure provides an automatic thread rolling machine for external bolt threads, including a worktable, a support column fixedly connected to the bottom of the worktable, a thread rolling die provided on the top of the worktable, and a bolt fixing mechanism provided on the top of the worktable.

[0007] The bolt fixing mechanism includes a motor, the side of which is fixedly connected to the inside of the workbench. A threaded rod is fixedly connected to the output end of the motor. A threaded sleeve is threadedly connected to the circumferential surface of the threaded rod. A push rod is fixedly connected to the side of the threaded sleeve. A hydraulic cylinder passes through the top of the workbench. One end of the hydraulic cylinder is slidably connected to a force-bearing rod via a piston. The other end of the hydraulic cylinder is slidably connected to a hydraulic rod via another piston. A fixed arc plate is fixedly connected to one end of the hydraulic rod.

[0008] For example, in at least one embodiment of this disclosure, an automatic bolt external thread rolling machine is provided, which further includes: a connecting plate fixedly connected to the top of the worktable, a support plate fixedly connected to the top of the connecting plate, and a limiting plate fixedly penetrating the circumferential surface of the threaded rod. The purpose of this is to enable the bolt to be positioned before processing, and to limit the displacement distance of the threaded sleeve by the limiting plate.

[0009] A return spring is fixedly connected to the side of the hydraulic cylinder. The end of the return spring away from the side of the hydraulic cylinder is fixedly connected to the circumferential surface of the force-bearing rod. The purpose of this is to ensure that the force-bearing rod can be reset by the return spring, thereby reducing manual intervention.

[0010] The limiting plate is fixedly connected to a limiting shaft on its side. The circumferential surface of the limiting shaft penetrates the side of the threaded sleeve and is slidably connected to the side of the threaded sleeve. The purpose of this is to prevent the threaded sleeve from rotating when it moves.

[0011] One end of the force-bearing rod is located on the displacement trajectory of the push rod. The number of hydraulic rods and fixed arc plates is set to two, and they are symmetrical to each other along the vertical central axis of the hydraulic cylinder. The purpose is to ensure that the movement of the push rod can move the force-bearing rod, so that the two fixed arc plates can fix the bolt.

[0012] According to another aspect, at least one embodiment of this disclosure also provides an automatic thread rolling machine for external bolt threads, including a cleaning mechanism. The cleaning mechanism includes a rotating shaft with a gear fixedly passing through its circumferential surface. A sliding groove is provided inside the worktable, and a rack is slidably connected inside the sliding groove. A moving rod is fixedly connected to the side of the rack, and a moving slot is provided on the top of the worktable. A cleaning plate is fixedly connected to the end of the moving rod away from the side of the rack. The purpose of this cleaning mechanism is to clean the processed iron wire.

[0013] For example, in at least one embodiment of this disclosure, an automatic thread rolling machine for external bolt threads is provided, which further includes: a water tank fixedly connected to the bottom of the worktable, a conveying pipe fixedly passing through the side of the water tank, and a rinsing plate fixedly connected to the end of the conveying pipe away from the side of the water tank, the purpose of which is to rinse the thread rolling die after use.

[0014] A switch is provided on the side of the water tank, an extrusion plate is fixedly connected to the side of the moving rod, and a support frame is fixedly connected to the top of the thread rolling die. The purpose of this is to enable the water tank to start and the delivery pipe to work stably.

[0015] The top of the workbench is provided with an inclined groove, and the inside of the inclined groove is provided with a conveying port. A collection box is slidably connected to the bottom of the workbench, the purpose of which is to collect and process the cleaned iron wire.

[0016] The circumferential surface of the gear meshes with the side surface of the rack. The number of the conveying pipe, rinsing plate and support frame is set to two, and they are symmetrical about each other along the vertical central axis of the water tank. The purpose is to ensure that the rotation of the gear can drive the rack to move, and at the same time, the two conveying pipes and rinsing plates improve the cleaning effect.

[0017] The beneficial effects of the embodiments disclosed herein are as follows:

[0018] 1. In this utility model, through the cooperation between the components such as the motor, hydraulic cylinder, and fixed arc plate of the bolt fixing mechanism, when the bolt needs to be automatically threaded, the operator places the bolt to be processed on the support plate, then starts the motor, and the push rod moves to squeeze the force rod, causing the hydraulic rod to move and drive the fixed arc plate to move. The movement of the fixed arc plate fixes and restricts the bolt on the support plate. After processing is completed, the fixed arc plate is reset by the return spring, releasing the fixation of the bolt. This design achieves the effect of fixing the processed bolt and avoids the bolt from shaking during processing, which would lead to inaccurate thread processing.

[0019] 2. In this utility model, through the mutual cooperation between components such as gears, cleaning plates, and rinsing plates of the cleaning mechanism, when the threaded rod drives the threaded sleeve to reset after processing, the threaded rod rotates and drives the rotating shaft to rotate. Through the meshing of gears and racks, the cleaning plate moves, and at the same time, the movement of the squeezing plate triggers the switch. The water flow inside the rinsing plate rinses the thread rolling die. The rinsed wire is pushed by the moving cleaning plate and enters the collection box through the inclined groove and conveying port for collection. This design achieves the effect of cleaning the residual wire after processing and maintains the cleanliness of the workbench. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a structural schematic diagram of the three-dimensional appearance of the present invention from a first-person perspective;

[0022] Figure 2 This is a first-person three-dimensional cross-sectional structural schematic diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention from a second-view three-dimensional cross-section;

[0024] Figure 4 This utility model Figure 2 A three-dimensional magnified structural diagram of A in the diagram;

[0025] Figure 5 This utility model Figure 3 A three-dimensional magnified structural diagram of B;

[0026] In the diagram: 1. Workbench; 2. Support column; 3. Thread rolling die; 4. Bolt fixing mechanism; 41. Motor; 42. Threaded rod; 43. Threaded sleeve; 44. Push rod; 45. Hydraulic cylinder; 46. Force rod; 47. Hydraulic rod; 48. Fixed arc plate; 49. Connecting plate; 410. Support plate; 411. Limiting plate; 412. Return spring; 413. Limiting shaft; 5. Cleaning mechanism; 51. Rotating shaft; 52. Gear; 53. Slide groove; 54. Rack; 55. Moving rod; 56. Moving groove; 57. Cleaning plate; 58. Water tank; 59. Conveying pipe; 510. Rinsing plate; 511. Switch; 512. Extrusion plate; 513. Support frame; 514. Inclined chute; 515. Conveying port; 516. Collection box. Detailed Implementation

[0027] 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.

[0028] 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."

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] like Figures 1-5 As shown, it illustrates an automatic bolt external thread rolling machine according to an embodiment of the present disclosure, including a worktable 1, a support column 2 fixedly connected to the bottom of the worktable 1, a thread rolling mold 3 provided on the top of the worktable 1, and a bolt fixing mechanism 4 provided on the top of the worktable 1.

[0034] The bolt fixing mechanism 4 includes a motor 41, which is fixedly connected to the side of the workbench 1. A threaded rod 42 is fixedly connected to the output end of the motor 41. A threaded sleeve 43 is threadedly connected to the circumferential surface of the threaded rod 42. A push rod 44 is fixedly connected to the side of the threaded sleeve 43. A hydraulic cylinder 45 passes through the top of the workbench 1. A force-bearing rod 46 is slidably connected to one end of the hydraulic cylinder 45 through a piston. A hydraulic rod 47 is slidably connected to the other end of the hydraulic cylinder 45 through another piston. A fixed arc plate 48 is fixedly connected to one end of the hydraulic rod 47.

[0035] In some examples, the workbench 1 is also fixedly connected to a connecting plate 49, and a support plate 410 is fixedly connected to the top of the connecting plate 49. The circumferential surface of the threaded rod 42 is fixedly penetrated by a limiting plate 411. The purpose of this is to allow the bolt to be positioned before processing, and to limit the displacement distance of the threaded sleeve 43 by the limiting plate 411.

[0036] A return spring 412 is fixedly connected to the side of the hydraulic cylinder 45. The end of the return spring 412 away from the side of the hydraulic cylinder 45 is fixedly connected to the circumferential surface of the force rod 46. The purpose is to ensure that the force rod 46 can be reset by the return spring 412, thereby reducing manual intervention.

[0037] A limiting shaft 413 is fixedly connected to the side of the limiting plate 411. The circumferential surface of the limiting shaft 413 penetrates the side of the threaded sleeve 43 and is slidably connected to the side of the threaded sleeve 43. The purpose is to prevent the threaded sleeve 43 from rotating when it moves.

[0038] One end of the force-bearing rod 46 is located on the displacement trajectory of the push rod 44. The number of hydraulic rods 47 and fixed arc plates 48 is set to two, and they are symmetrical about each other along the vertical central axis of the hydraulic cylinder 45. The purpose is to ensure that the movement of the push rod 44 can move the force-bearing rod 46, so that the two fixed arc plates 48 can fix the bolt.

[0039] For example, such as Figures 1-5 As shown, when automatic thread rolling of bolts is required, the operator places the bolt to be processed on the support plate 410, then starts the motor 41. The output end of the motor 41 rotates, driving the thread rod 42 to rotate. The rotation of the thread rod 42 drives the thread sleeve 43 to move linearly through the limiting shaft 413. The movement of the thread sleeve 43 drives the push rod 44 to move. During the movement of the push rod 44, it compresses the force rod 46. The force rod 46 retracts inside the hydraulic cylinder 45 of the force box. At this time, the hydraulic rod 47 extends outward under the pressure of the liquid inside the hydraulic cylinder 45. The movement of the hydraulic rod 47 drives the fixed arc plate 48 to move. The movement of the fixed arc plate 48 fixes and restricts the bolt on the support plate 410. When the processing is completed, the push rod 44 leaves one end of the force rod 46. The force rod 46 is reset by the elasticity of the return spring 412, causing the fixed arc plate 48 to reset and releasing the fixation of the bolt.

[0040] like Figures 1-5As shown, it illustrates an automatic bolt external thread rolling machine according to another embodiment of this disclosure, which is largely the same as the above-described technical solution. Therefore, only the differences are described in detail. The cleaning mechanism 5 includes a rotating shaft 51, a gear 52 fixedly passing through the circumferential surface of the rotating shaft 51, a sliding groove 53 is provided inside the worktable 1, a rack 54 is slidably connected inside the sliding groove 53, a moving rod 55 is fixedly connected to the side of the rack 54, a moving groove 56 is provided on the top of the worktable 1, and a cleaning plate 57 is fixedly connected to the end of the moving rod 55 away from the side of the rack 54. The purpose of this cleaning plate 57 is to clean the processed iron wire.

[0041] In some examples, the following are also included: a water tank 58 is fixedly connected to the bottom of the workbench 1, a conveying pipe 59 is fixedly passed through the side of the water tank 58, and a rinsing plate 510 is fixedly connected to the end of the conveying pipe 59 away from the side of the water tank 58, the purpose of which is to rinse the thread rolling die 3 after use.

[0042] A switch 511 is provided on the side of the water tank 58, an extrusion plate 512 is fixedly connected to the side of the moving rod 55, and a support frame 513 is fixedly connected to the top of the thread rolling die 3. The purpose is to enable the water tank 58 to start and the delivery pipe 59 to work stably.

[0043] The top of the workbench 1 is provided with a sloping groove 514, and the inside of the sloping groove 514 is provided with a conveying port 515. The bottom of the workbench 1 is slidably connected with a collection box 516, the purpose of which is to collect and process the cleaned iron wire.

[0044] The circumferential surface of gear 52 meshes with the side surface of rack 54. The number of conveying pipe 59, rinsing plate 510 and support frame 513 is set to two, and they are symmetrical about each other along the vertical central axis of water tank 58. The purpose is to ensure that the rotation of gear 52 can drive rack 54 to move, and at the same time improve the cleaning effect through two conveying pipes 59 and rinsing plate 510.

[0045] For example, such as Figures 1-5As shown, when the threaded rod 42 drives the threaded sleeve 43 to reset after processing, the threaded rod 42 rotates and drives the rotating shaft 51 to rotate. The rotating shaft 51 rotates and drives the gear 52 to rotate. Through the meshing of the gear 52 and the rack 54, the gear 52 rotates and drives the rack 54 to slide inside the slide groove 53. The movement of the rack 54 drives the moving rod 55 to move inside the moving groove 56. The movement of the moving rod 55 drives the cleaning plate 57 to move. At the same time, the movement of the moving rod 55 drives the extrusion plate 512 to move. The movement of the extrusion plate 512 triggers the switch 511, which opens the water tank 58. At this time, the water inside the water tank 58 enters the interior of the rinsing plate 510 through the conveying pipe 59. The water inside the rinsing plate 510 rinses the thread rolling die 3. The rinsed wire is pushed by the moving cleaning plate 57. The pushed wire enters the collection box 516 through the inclined groove 514 and the conveying port 515 for collection and processing.

[0046] 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. A bolt external thread automatic thread rolling machine, characterized by, Includes a workbench (1), with a support column (2) fixedly connected to the bottom of the workbench (1), a thread rolling mold (3) provided on the top of the workbench (1), and a bolt fixing mechanism (4) provided on the top of the workbench (1). The bolt fixing mechanism (4) includes a motor (41), the side of which is fixedly connected to the inside of the workbench (1). The output end of the motor (41) is fixedly connected to a threaded rod (42), the circumferential surface of which is threadedly connected to a threaded sleeve (43), the side of which is fixedly connected to a push rod (44), the top of the workbench (1) is penetrated by a hydraulic cylinder (45), one end of which is slidably connected to a force rod (46) via a piston, the other end of which is slidably connected to a hydraulic rod (47) via a piston at the other end, and one end of which is fixedly connected to a fixed arc plate (48).

2. The bolt external thread automatic thread rolling machine according to claim 1, characterized in that, The top of the workbench (1) is fixedly connected to a connecting plate (49), the top of the connecting plate (49) is fixedly connected to a support plate (410), and the circumferential surface of the threaded rod (42) is fixedly penetrated by a limiting plate (411).

3. The automatic thread rolling machine for external bolt threads according to claim 2, characterized in that, A return spring (412) is fixedly connected to the side of the hydraulic cylinder (45), and one end of the return spring (412) away from the side of the hydraulic cylinder (45) is fixedly connected to the circumferential surface of the force rod (46).

4. The bolt external thread automatic thread rolling machine according to claim 3, characterized in that, The limiting plate (411) has a limiting shaft (413) fixedly connected to its side. The circumferential surface of the limiting shaft (413) penetrates the side of the threaded sleeve (43) and is slidably connected to the side of the threaded sleeve (43).

5. An automatic thread rolling machine for external bolt threads according to claim 4, characterized in that, One end of the force-bearing rod (46) is located on the displacement trajectory of the push rod (44). The number of the hydraulic rod (47) and the fixed arc plate (48) is set to two, and they are symmetrical to each other along the vertical central axis of the hydraulic cylinder (45).

6. A bolt external thread automatic thread rolling machine according to claim 5, wherein The top of the workbench (1) is provided with a cleaning mechanism (5), which includes a rotating shaft (51). A gear (52) is fixedly passed through the circumferential surface of the rotating shaft (51). A sliding groove (53) is provided inside the workbench (1). A rack (54) is slidably connected inside the sliding groove (53). A moving rod (55) is fixedly connected to the side of the rack (54). A moving groove (56) is provided on the top of the workbench (1). A cleaning plate (57) is fixedly connected to one end of the moving rod (55) away from the side of the rack (54).

7. An automatic thread rolling machine for external bolt threads according to claim 6, characterized in that, A water tank (58) is fixedly connected to the bottom of the workbench (1), and a conveying pipe (59) is fixedly connected through the side of the water tank (58). A rinsing plate (510) is fixedly connected to one end of the conveying pipe (59) away from the side of the water tank (58).

8. An automatic thread rolling machine for external bolt threads according to claim 7, characterized in that, A switch (511) is provided on the side of the water tank (58), an extrusion plate (512) is fixedly connected to the side of the moving rod (55), and a support frame (513) is fixedly connected to the top of the thread rolling die (3).

9. The bolt external thread automatic thread-rolling machine according to claim 8, characterized in that, The top of the workbench (1) is provided with a sloping groove (514), the inside of the sloping groove (514) is provided with a conveying port (515), and the bottom of the workbench (1) is slidably connected with a collection box (516).

10. The bolt external thread automatic thread rolling machine according to claim 9, characterized in that, The circumferential surface of the gear (52) meshes with the side surface of the rack (54). The number of the conveying pipe (59), the flushing plate (510) and the support frame (513) is set to two, and they are symmetrical to each other along the vertical central axis of the water tank (58).

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