Automatic thread rolling and feeding device for studs
By designing a double-head bolt automatic wire-pulling and loading device including a vibrating disc, a spiral track, a screening groove and a wedge-shaped strip-shaped projection, the problem that the existing technology cannot achieve transverse loading of double-head bolts is solved, and automatic transverse loading and efficient production of double-head bolts are realized.
Patent Information
- Application Number
- CN202422003923.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The prior art automatic loading equipment cannot make the two ends of the double-head bolts horizontally load according to the corresponding position of the wire-swalking board, and cannot meet the automatic loading needs of the two ends of the double-head bolts to simultaneously process wire-swalking.
A double-head bolt automatic wire-pulling and loading device is designed, including a vibrating disk, a spiral track, a screening groove, a feeding pipe and a wedge-shaped strip protrusion. The double-head bolts are transported through the vibrating disk and a spiral track, and the double-head bolts are screened and guided in a specific posture by using the screening groove and a wedge-shaped strip protrusion, so that they are discharged in a transverse posture in the loading pipe.
Automatic transverse loading of double-head bolts is realized, which meets the automatic loading needs of simultaneously thread-pulling and processing of both ends of double-head bolts, and improves production efficiency.
Smart Images
Figure CN222931757U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of material conveying, in particular to an automatic thread rolling and feeding device for double-headed bolts. Background Art
[0002] The thread processing of fasteners such as bolts and screws is usually completed by thread rolling or thread rolling. For small-sized threads, thread rolling is mostly used, while for relatively large-sized threads with higher thread quality requirements, thread rolling processing is mostly used. Thread rolling is to reciprocate two thread rolling plates to squeeze and process the rod part of the bolt located between them to form threads. For double-headed bolt products with a hexagonal head in the middle and threads at both ends, the lengths of both ends are different, and the threads at both ends need to be thread rolled. The traditional process is to thread roll the two ends separately on different thread rolling machines in two times, which has low efficiency. Now it is proposed to set two groups of side-by-side thread rolling plates on one thread rolling machine, so that the double-headed bolts enter the two groups of thread rolling plates horizontally, and the two ends are thread rolled simultaneously to improve production efficiency. However, the traditional automatic feeding of bolt thread rolling machines uses a vibrating bowl feeder, which can only discharge and feed bolts in a vertical state. For the double-headed bolts with simultaneous thread rolling at both ends, due to the differences in the lengths, pitches, thread sizes, etc. of the two ends, the two ends of the double-headed bolts must be fed horizontally according to the corresponding positions of the thread rolling plates, and the automatic feeding equipment in the prior art cannot meet this requirement. Summary of the Utility Model
[0003] The purpose of the utility model is to provide an automatic thread rolling and feeding device for double-headed bolts to solve the problem that the automatic feeding equipment in the prior art cannot feed the two ends of the double-headed bolts horizontally according to the corresponding positions of the thread rolling plates.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme: an automatic thread rolling and feeding device for double-headed bolts, including a vibrating bowl feeder. A spiral track for conveying double-headed bolts is arranged in the vibrating bowl feeder. An outlet is arranged at the top of the vibrating bowl feeder. The outlet is connected with a feeding pipe located outside the vibrating bowl feeder. The feeding pipe is a square pipe twisted by 90°. A strip-shaped through groove is opened on the bottom plate of the feeding pipe. The width of the strip-shaped through groove is between the diameter of the bolt screw rod and the inner diameter of the hexagonal head. A screening tank is connected between the top end of the spiral track and the feeding pipe. A screening mechanism for screening the double-headed bolts so that the long ends fall into the strip-shaped through groove is arranged on the screening tank.
[0005] Preferably, as an improvement, the width of the screening tank is 1.1-1.2 times the length of the double-headed bolt. The screening mechanism includes a wedge-shaped strip-shaped protrusion arranged on the bottom plate of the screening tank. The wedge-shaped strip-shaped protrusion is arranged along the length direction of the screening tank. A blanking notch is arranged on the side wall of the screening tank close to the middle of the vibrating bowl feeder on one side of the wedge-shaped strip-shaped protrusion. The screening tank on the other side of the wedge-shaped strip-shaped protrusion is adjacent to the feeding pipe.
[0006] Preferably, as an improvement, the top surface of the wedge-shaped strip-shaped protrusion is an arc surface.
[0007] Preferably, as an improvement, a strip-shaped guiding hole is provided on the bottom plate of the screening groove between the wedge-shaped strip protrusion and the spiral track. The width of the strip-shaped guiding hole is greater than the thickness of the hexagonal head in the middle of the double-headed bolt. A retaining rod obliquely crossing the screening groove is provided above the strip-shaped guiding hole, and the distance between the retaining rod and the bottom plate of the screening groove is less than the inscribed circle diameter of the hexagonal head of the double-headed bolt.
[0008] Preferably, as an improvement, the lower end of the wedge-shaped strip protrusion extends into the strip-shaped guiding hole.
[0009] Preferably, as an improvement, the retaining rod extends from the outside of the screening groove to the inside of the vibrating disk.
[0010] Preferably, as an improvement, the inner cavity height of the feeding pipe is 1.1 - 1.2 times the length from the hexagonal head of the double-headed bolt to the short end.
[0011] The principle and advantages of this solution are as follows: In practical applications, the rod materials of the double-headed bolts are stacked in the vibrating disk and are arranged and conveyed upward along the spiral track under the vibration provided by the vibrating disk and finally enter the screening groove. The hexagonal heads of the rod materials of the double-headed bolts along the radial direction of the vibrating disk on the central axis of the screening groove fall into the strip-shaped guiding holes and continue to move forward under vibration. The width of the screening groove is set so that the hexagonal heads of the rod materials of the double-headed bolts can effectively enter the strip-shaped guiding holes. The rod materials of the double-headed bolts along the tangential direction of the vibrating disk continue to move forward. Through the height setting of the retaining rod and the width setting of the strip-shaped guiding hole, the rod materials of the double-headed bolts along the radial direction of the vibrating disk can pass under the retaining rod, while for the rod materials of the double-headed bolts along the tangential direction of the vibrating disk, their hexagonal heads or ends are located above the retaining rod and are blocked and guided by the retaining rod to fall back into the vibrating disk from the side of the screening groove during the forward movement. The rod materials of the double-headed bolts passing through the retaining rod continue to move forward and then climb onto the wedge-shaped strip protrusion. The wedge-shaped strip protrusion serves as a fulcrum to support the rod materials of the double-headed bolts. Its arc-shaped top surface makes the rod materials of the double-headed bolts tilt on it due to the different weights at both ends. The rod materials of the double-headed bolts with the long end on the side of the feeding pipe fall from the wedge-shaped strip protrusion, the long end enters the strip-shaped through groove and continues to fall into the feeding pipe; the rod materials of the double-headed bolts with the long end on the side of the vibrating disk fall from the wedge-shaped strip protrusion and return to the vibrating disk. In this way, the rod materials of the double-headed bolts are screened out in a specific posture and enter the feeding pipe. The rod materials of the double-headed bolts fall along the feeding pipe and follow the feeding pipe to twist 90° from the vertical direction to the horizontal direction. The inner cavity height of the feeding pipe ensures that the rod materials of the double-headed bolts are stably discharged in a horizontal posture and enter the thread rolling machine. In this way, through the technical solution of the present invention, the rod materials of the double-headed bolts can be automatically fed in a specific horizontal posture, meeting the automatic feeding requirements for simultaneous thread rolling processing at both ends of the double-headed bolts. Description of the Drawings
[0012] Figure 1 It is the three views of the rod materials of the double-headed bolts in the embodiment of the present invention.
[0013] Figure 2This is the top view of the embodiment of the present utility model.
[0014] Figure 3 This is the longitudinal sectional view of the screening tank when the double-headed bolt rod stock moves in the screening tank in the embodiment of the present utility model.
[0015] Figure 4 This is the structural schematic diagram of the double-headed bolt rod stock on the wedge-shaped strip protrusion in the embodiment of the present utility model.
[0016] Figure 5 This is the cross-sectional view for comparing the states of the feeding pipe before and after torsion in the embodiment of the present utility model. Detailed implementation manners
[0017] The following is a further detailed description through specific implementation manners:
[0018] The reference numerals in the accompanying drawings of the specification include: vibrating disk 1, spiral track 2, screening tank 3, feeding pipe 4, strip-shaped guiding hole 5, retaining rod 6, blanking notch 7, wedge-shaped strip protrusion 8, strip-shaped through groove 9.
[0019] The embodiment is basically as shown in the attached Figure 2 As shown: The automatic feeding device for double-headed bolts for thread rolling includes a vibrating disk 1. A spiral track 2 for conveying double-headed bolts is arranged inside the vibrating disk 1. Such a vibrating disk 1 is a product of the prior art, and its working principle will not be elaborated here. There is a discharge port at the top of the vibrating disk 1, and a feeding pipe 4 located outside the vibrating disk 1 is welded to the discharge port. The feeding pipe 4 is a square pipe twisted by 90°, and the feeding pipe 4 is arranged obliquely downward. A strip-shaped through groove 9 is opened on the bottom plate of the feeding pipe 4. Combining Figure 5 As shown, the width of the strip-shaped through groove 9 is between the diameter of the double-headed bolt screw rod and the inner diameter of the hexagonal head. Combining Figure 1 As shown, the inner cavity height h of the feeding pipe 4 is 1.1 - 1.2 times the length l from the hexagonal head to the short end of the double-headed bolt.
[0020] A screening tank 3 is welded between the top end of the spiral track 2 and the feeding pipe 4. A screening mechanism for screening the double-headed bolts so that the long ends fall into the strip-shaped through groove 9 is arranged on the screening tank 3. The width D of the screening tank 3 is 1.1 - 1.2 times the length L of the double-headed bolt. Combining Figure 3 As shown, the screening mechanism includes a wedge-shaped strip protrusion 8 welded on the bottom plate of the screening tank 3. The wedge-shaped strip protrusion 8 is arranged along the length direction of the screening tank 3, and the top surface of the wedge-shaped strip protrusion 8 is an arc surface. A blanking notch 7 is arranged on the side wall of the screening tank 3 close to the middle of the vibrating disk 1 on one side of the wedge-shaped strip protrusion 8. The screening tank 3 on the other side of the wedge-shaped strip protrusion 8 is adjacent to the feeding pipe 4 and has a smooth transition.
[0021] On the bottom plate of the screening groove 3 between the wedge-shaped strip protrusion 8 and the spiral track 2, there is a strip-shaped guiding hole 5. The width K of the strip-shaped guiding hole 5 is greater than the thickness m of the hexagonal head in the middle of the double-headed bolt. The blanking notch 7 extends to the outside of the strip-shaped guiding hole 5. The low end of the wedge-shaped strip protrusion 8 extends into the strip-shaped guiding hole 5. Above the strip-shaped guiding hole 5, there is a retaining rod 6 that obliquely crosses the screening groove 3. One end of the retaining rod 6 is welded to the side wall of the screening groove 3, and the other end is suspended. The retaining rod 6 extends from the outside of the screening groove 3 to the inside of the vibrating disk 1. The distance H between the retaining rod 6 and the bottom plate of the screening groove 3 is less than the inscribed circle diameter d of the hexagonal head of the double-headed bolt.
[0022] The specific implementation process is as follows: The blank rod of the double-headed bolt is stacked in the vibrating disk 1 and is conveyed upward along the spiral track 2 under the vibration provided by the vibrating disk 1 and finally enters the screening groove 3. The hexagonal head of the blank rod of the double-headed bolt along the radial direction of the vibrating disk 1 on the central axis of the screening groove 3 falls into the strip-shaped guiding hole 5 and continues to move forward under vibration. Combining Figure 3 As shown, the width of the screening groove 3 and the width of the strip-shaped guiding hole 5 are set so that the hexagonal head of the blank rod of the double-headed bolt can effectively enter the strip-shaped guiding hole 5. The blank rod of the double-headed bolt with its axis along the tangential direction of the vibrating disk 1 continues to move forward. Through the height setting of the retaining rod 6 and the width setting of the strip-shaped guiding hole 5, the blank rod of the double-headed bolt along the radial direction of the vibrating disk 1 can pass under the retaining rod 6, while for the blank rod of the double-headed bolt with its axis along the tangential direction of the vibrating disk 1, its hexagonal head or end is located above the retaining rod 6 and is blocked and guided by the retaining rod 6 to fall back into the vibrating disk 1 from the side of the screening groove 3 during the forward movement. The blank rod of the double-headed bolt passing through the retaining rod 6 continues to move forward and then climbs onto the wedge-shaped strip protrusion 8. Combining Figure 4 As shown, and the wedge-shaped strip protrusion 8 serves as a fulcrum to support the blank rod of the double-headed bolt. Its arc-shaped top surface causes the blank rod of the double-headed bolt to tilt on it due to the different weights at both ends. The blank rod of the double-headed bolt with its long end on the side of the feeding pipe 4 falls from the wedge-shaped strip protrusion 8, and the long end enters the strip-shaped through groove 9 and continues to fall into the feeding pipe 4. The blank rod of the double-headed bolt with its long end on the side of the vibrating disk 1 falls from the wedge-shaped strip protrusion 8 and returns to the vibrating disk 1 through the blanking notch 7. In this way, the blank rod of the double-headed bolt is screened out in a specific posture and enters the feeding pipe 4. The blank rod of the double-headed bolt falls along the feeding pipe 4. Combining Figure 5 As shown, it follows the feeding pipe 4 to twist 90° and changes from the vertical direction to the horizontal direction. The inner cavity height of the feeding pipe 4 ensures that the blank rod of the double-headed bolt is stably discharged in a horizontal posture and enters the thread rolling machine. In this way, through the technical solution of the present utility model, the blank rod of the double-headed bolt can be automatically fed in a specific horizontal posture, meeting the automatic feeding requirement for simultaneously thread rolling both ends of the double-headed bolt.
[0023] The above are only the embodiments of the present utility model, and common general technical solutions and / or characteristics in the solutions are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solutions of the present utility model, several modifications and improvements can be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.
Claims
1. Automatic thread rolling and feeding device for stud bolts, characterized by: It includes a vibrating plate, which is provided with a spiral track for conveying stud bolts. A discharge port is provided at the top of the vibrating plate, which is connected to a feeding pipe located outside the vibrating plate. The feeding pipe is a square pipe twisted 90°. A strip through groove is provided on the bottom plate of the feeding pipe. The width of the strip through groove is between the diameter of the stud bolt screw and the inner diameter of the hexagonal head. A screening groove is connected between the top of the spiral track and the feeding pipe. The screening groove is provided with a screening mechanism for screening the stud bolts until the long ends fall into the strip through groove.
2. The automatic thread rolling and feeding device for stud bolts according to claim 1 is characterized in that: The width of the screening slot is 1.1-1.2 times the length of the stud bolt. The screening mechanism includes a wedge-shaped strip protrusion arranged on the bottom plate of the screening slot. The wedge-shaped strip protrusion is arranged along the length direction of the screening slot. A blanking notch is provided on the side wall of the screening slot located on the side of the wedge-shaped strip protrusion close to the middle of the vibration plate, and the screening slot on the other side of the wedge-shaped strip protrusion is adjacent to the feeding pipe.
3. The automatic thread rolling and feeding device for stud bolts according to claim 2 is characterized in that: The top surface of the wedge-shaped strip protrusion is an arc surface.
4. The automatic thread rolling and feeding device for stud bolts according to claim 3 is characterized in that: A strip guide hole is provided on the bottom plate of the screening slot between the wedge-shaped strip protrusion and the spiral track. The width of the strip guide hole is greater than the thickness of the hexagonal head in the middle of the stud bolt. A baffle bar obliquely spanning the screening slot is provided above the strip guide hole. The distance between the baffle bar and the bottom plate of the screening slot is less than the inscribed circle diameter of the hexagonal head of the stud bolt.
5. The automatic thread rolling and feeding device for stud bolts according to claim 4 is characterized in that: The lower end of the wedge-shaped strip protrusion extends into the strip-shaped guide hole.
6. The automatic thread rolling and feeding device for stud bolts according to claim 5 is characterized in that: The baffle bar extends from the outside of the screening tank to the inside of the vibrating plate.
7. The automatic thread rolling and feeding device for stud bolts according to claim 6 is characterized in that: The inner cavity height of the feeding pipe is 1.1-1.2 times the length from the hexagonal head of the stud bolt to the short end.