Feeding frame structure of cold header

Abstract

The utility model discloses a feeding frame structure of a cold header, belongs to the technical field of cold headers, and solves the problem that the size range of bars produced by the cold header is quite limited due to the fact that the feeding frame structure cannot be adjusted to adapt to the bars with different radiuses. The first fixing frame and the second fixing frame are fixedly connected to the two sides of the mounting frame, the lifting seat is fixedly connected to the mounting frame and arranged on the same side as the second fixing frame, and the gantry sliding frame is fixedly connected to the top face of the lifting seat. When bars are controlled to advance, the transmission shaft is in transmission with a power source, the half shaft is driven to rotate through meshing of end face teeth, the torsional spring accumulates elastic potential energy, the half shaft drives the sliding block to slide, the arc-shaped arm deflects, the hook claw pushes the ratchet wheel to rotate, the feeding wheel is driven to rotate, and forward feeding of the bars is achieved. When the end face teeth are separated, the torsion spring releases energy, the part rotates, intermittent displacement of the bars is achieved, and when bars with different radiuses are machined, an operator rotates the eccentric wheel, adjusts the distance between the feeding wheels and keeps stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold header technical field especially relates to a cold header feed rack structure. BACKGROUND

[0002] Cold header is a kind of high-efficiency equipment specially used for metal cold working, mainly used for processing metal blank into various shape fasteners, such as bolt, screw, nut etc. at normal temperature. Its working principle is to use powerful pressure and die to make metal blank plastic deformation in die cavity, so as to obtain required shape and size. Cold header has the characteristics of high efficiency and high precision, can complete mass production in short time, and the processed product has high strength, good surface quality and high dimensional accuracy, and is widely used in automobile, machinery, building, hardware and other industries. Modern cold header is usually equipped with automatic control system, can realize multi-station continuous processing, further improves production efficiency and product quality. In addition, the die design and material selection of cold header are also very critical, directly affect processing effect and equipment life. With the continuous progress of technology, the performance and function of cold header are continuously improved, which provides more efficient and reliable solution for metal processing industry.

[0003] For example, the technical key points of the cold header with application number CN202310642222.2 are as follows: a bed body; a feeding unit installed on the bed body for conveying bar stock; a cutting unit installed on the bed body for cutting off the bar stock conveyed by the feeding unit into the bed body; a main slide table and a main die box oppositely arranged, the main slide table being slidingly connected to the bed body, and the main die box being fixedly connected to the bed body; a transmission unit including: a main crankshaft rotatingly connected to the bed body and drivingly connected to an external motor, a first connecting rod having one end rotatingly connected to an eccentric portion of the main crankshaft; a first connecting shaft fixedly connected to the bed body; a second connecting rod arranged above the first connecting rod, one end of the second connecting rod rotatingly connected to the first connecting shaft; a second connecting shaft, the other end of the first connecting rod rotatingly connected to the second connecting shaft, and the other end of the second connecting rod rotatingly connected to the second connecting shaft; and a pushing rod, one end of the pushing rod rotatingly connected to the second connecting shaft, and the other end of the pushing rod rotatingly connected to the main slide table, the pushing rod being used to push the main slide table to slide relative to the bed body, and the main slide table being used to approach the main die box to cold upset the bar stock; and a clamping unit installed on the bed body for clamping the bar stock to different stations.

[0004] The feeding unit in the above-mentioned scheme mainly includes a first feeding wheel, a second feeding wheel, a third feeding wheel and a fourth feeding wheel. Since the spacing between the feeding wheels is relatively fixed, there is no way to adjust it to adapt to bar materials of different radii, thus limiting the size range of bar materials that can be produced by the cold header.

[0005] Therefore, a cold header feed rack structure is proposed to solve or alleviate the above-mentioned problems. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a feeding rack structure for a cold heading machine.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A cold heading machine feed rack structure includes a mounting frame, a first fixed frame and a second fixed frame fixedly connected to both sides of the mounting frame, a lifting seat fixedly connected to the mounting frame and disposed on the same side as the second fixed frame, and a gantry slide fixedly connected to the top surface of the lifting seat. A slide block is slidably connected inside the gantry slide block. A rotatable upper rotating shaft is disposed through the slide block. A rotatable lower rotating shaft is disposed through the lifting seat. An upper feeding wheel and a lower feeding wheel are fixedly connected to the ends of the upper rotating shaft and the lower rotating shaft facing the first fixed frame, respectively. A first downward compression spring is fixedly connected between the inner top surface of the gantry slide block and the top surface of the slide block.

[0009] Preferably, the top of the gantry carriage is fixedly connected to an extension platform located above the upper feeding wheel. The top surface of the extension platform has several through holes, and a guide rod is slidably connected in the through holes. The lower end of the guide rod is fixedly connected to a lower pressure seat that can abut against the outer ring of the upper feeding wheel.

[0010] Preferably, a vertically arranged second pressure spring is fixedly connected between the pressure seat and the extension platform.

[0011] Preferably, the top surface of the extension platform has a guide hole through which it passes, and a pull rod that is fixedly connected to the top surface of the slide is slidably connected in the guide hole. It also includes an eccentric wheel, the outer ring of which is recessed inward to form a spacer groove. The upper end of the pull rod is located in the spacer groove, and the pull rod is rotatably connected to the eccentric wheel. The rotation axis of the eccentric wheel is eccentrically set with respect to the central axis of the eccentric wheel, and a handle is fixedly connected to the outer ring of the eccentric wheel.

[0012] Preferably, the system further includes a drive shaft that passes through the first and second fixed frames and is rotatably arranged. The drive shaft comprises two half-shafts. The half-shaft passing through the second fixed frame is slidable along its length. Each of the two half-shafts has end face teeth fixedly connected to its opposite ends. The two end face teeth mesh with each other, and the tooth profile of the end face teeth is a right-angled triangle. A guide block is fixedly connected to the end of the drive shaft facing the second fixed frame. A drive gear is coaxially fixedly connected to the end of the lower rotating shaft away from the lower feed wheel after passing through the slide block. A driven gear is coaxially fixedly connected to the end of the upper rotating shaft away from the upper feed wheel. The drive gear and the driven gear... The lower rotating shaft is fixedly connected to a ratchet. A rotating seat is rotatably connected to the end of the lower rotating shaft away from the lower feed wheel. A pawl that meshes with the ratchet is rotatably connected to the end of the rotating seat away from its axis of rotation. An arc-shaped arm is rotatably connected to the other end of the rotating seat away from its axis of rotation. A sliding groove is opened at the end of the guide block away from the drive shaft. A slider is slidably connected in the sliding groove. A connecting shaft is rotatably connected to the slider. The connecting shaft is rotatably connected to the end of the arc-shaped arm away from the rotating seat. A torsion spring is sleeved on the outside of the drive shaft. One end of the torsion spring is fixedly connected to the second fixed frame, and the other end of the torsion spring is fixedly connected to the guide block.

[0013] Preferably, a vertical frame is fixedly connected to the end of the second fixed frame away from the mounting frame, and a plurality of vertical rollers are rotatably connected to the vertical frame via a first rotating shaft.

[0014] Preferably, a horizontal frame is fixedly connected to the end of the vertical frame away from the second fixed frame, and a number of horizontal rollers are rotatably connected to the horizontal frame via a second rotating shaft.

[0015] This utility model has the following beneficial effects:

[0016] When the bar stock is moved forward, the transmission shaft and power source drive each other, and the half-shaft rotates through the meshing of the end face teeth. The torsion spring accumulates elastic potential energy, and the half-shaft drives the slider to slide, the arc arm to deflect, and the pawl to push the ratchet to rotate, which in turn drives the feed wheel to rotate, thus feeding the bar stock forward. When the end face teeth separate, the torsion spring releases energy, the component rotates, and the bar stock is displaced intermittently. When processing bars of different radii, the operator rotates the eccentric wheel to adjust the distance between the feed wheels to maintain stability. Overall, this makes the operation of the cold heading machine simpler and the feeding accuracy higher. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0020] Figure 3 This is an exploded view of the present invention.

[0021] 1. Mounting frame; 2. First fixed frame; 3. Second fixed frame; 4. Lifting seat; 5. Gantry slide; 6. Horizontal frame; 7. Vertical frame; 8. Horizontal roller; 9. Second rotating shaft; 10. Vertical roller; 11. First rotating shaft; 12. Drive shaft; 13. Guide block; 14. Arc arm; 15. Rotary seat; 16. Claw; 17. Ratchet; 18. Drive gear; 19. Slide seat; 20. Driven gear; 21. Lower feed wheel; 22. Upper feed wheel; 23. Extension table; 24. Lower pressure seat; 25. Eccentric wheel; 26. Handle; 27. Guide hole; 28. Through hole; 29. ​​Guide rod; 30. Second downward pressure spring; 31. Pull rod; 32. First downward pressure spring; 33. Spacing groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0026] Furthermore, the terms "first," "second," and "third" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] A cold heading machine feed rack structure, such as Figures 1 to 3 As shown, it includes a mounting frame 1, a first fixed frame 2 and a second fixed frame 3 fixedly connected to both sides of the mounting frame 1, a lifting seat 4 fixedly connected to the mounting frame 1 and arranged on the same side as the second fixed frame 3, and a gantry slide 5 fixedly connected to the top surface of the lifting seat 4. A vertical frame 7 is fixedly connected to the end of the second fixed frame 3 away from the mounting frame 1. Several vertical rollers 10 are rotatably connected to the vertical frame 7 through a first rotating shaft 11. A horizontal frame 6 is fixedly connected to the end of the vertical frame 7 away from the second fixed frame 3. Several horizontal rollers 8 are rotatably connected to the horizontal frame 6 through a second rotating shaft 9.

[0029] A slide block 19 is slidably connected inside the gantry slide 5. A rotatable upper shaft is installed through the slide block 19, and a rotatable lower shaft is installed through the lifting seat 4. An upper feeding wheel 22 and a lower feeding wheel 21 are fixedly connected to the ends of the upper and lower shafts facing the first fixed frame 2, respectively. A first downward pressure spring 32 is fixedly connected between the inner top surface of the gantry slide 5 and the top surface of the slide block 19. An extension platform 23 located above the upper feeding wheel 22 is fixedly connected to the top of the gantry slide 5. Several through holes 28 are opened on the top surface of the extension platform 23. Guide rods 29 are slidably connected inside the through holes 28. The lower end of the guide rods 29 is fixedly connected to a spring that can connect with the upper... The outer ring of the feeding wheel 22 abuts against the pressure seat 24. The pressure seat 24 and the extension table 23 are fixedly connected by a vertically arranged second pressure spring 30. The top surface of the extension table 23 has a guide hole 27 through which it passes. A pull rod 31 fixedly connected to the top surface of the slide 19 is slidably connected in the guide hole 27. It also includes an eccentric wheel 25. The outer ring of the eccentric wheel 25 is recessed inward to form a spacer groove 33. The upper end of the pull rod 31 is located in the spacer groove 33, and the pull rod 31 is rotatably connected to the eccentric wheel 25. The rotation axis of the eccentric wheel 25 is eccentrically set with respect to the central axis of the eccentric wheel 25. The outer ring of the eccentric wheel 25 is fixedly connected to a handle 26.

[0030] It also includes a drive shaft 12 that passes through the first fixed frame 2 and the second fixed frame 3 and is rotatably mounted. The drive shaft 12 includes two half-shafts. The half-shaft passing through the second fixed frame 3 can slide along its length. The ends of the two half-shafts facing each other are fixedly connected with end face teeth. The two end face teeth mesh with each other, and the tooth profile of the end face teeth is a right-angled triangle. The end of the drive shaft 12 facing the second fixed frame 3 is fixedly connected with a guide block 13. The end of the lower rotating shaft away from the lower feed wheel 21 passes through the slide block 19 and is coaxially fixedly connected with a drive gear 18. The end of the upper rotating shaft away from the upper feed wheel 22 is coaxially fixedly connected with a driven gear 20. The drive gear 18 and the driven gear 20 mesh. The lower rotating shaft is fixedly connected to a ratchet 17. A rotating seat 15 is rotatably connected to the end of the lower rotating shaft away from the lower feed wheel 21. A hook 16 that meshes with the ratchet 17 is rotatably connected to the end of the rotating seat 15 away from its rotation axis. An arc-shaped arm 14 is rotatably connected to the other end of the rotating seat 15 away from its rotation axis. A sliding groove is opened at the end of the guide block 13 away from the drive shaft 12. A slider is slidably connected in the sliding groove. A connecting shaft is rotatably connected to the slider. The connecting shaft is rotatably connected to the end of the arc-shaped arm 14 away from the rotating seat 15. A torsion spring is sleeved on the outside of the drive shaft 12. One end of the torsion spring is fixedly connected to the second fixed frame 3, and the other end of the torsion spring is fixedly connected to the guide block 13.

[0031] When the present invention needs to control the forward movement of the bar, the transmission shaft 12 will transmit power to the power source, so that one half shaft of the transmission shaft 12 will rotate the other half shaft through the end face teeth. During the rotation of the latter half shaft, the torsion spring will also undergo elastic deformation and accumulate elastic potential energy. The half shaft will drive the guide block 13 to rotate, so that the slider slides in the groove. At the same time, the slider drives the lower end of the arc arm 14 to deflect through the connecting shaft. When the arc arm 14 deflects, it will pull one end of the rotating seat 15 to deflect, and then the rotating seat 15 will drive the hook 16 to push the ratchet 17, so that the ratchet 17 will rotate clockwise. When the ratchet 17 rotates, it can drive the drive gear 18 to rotate through the lower rotating shaft. In this way, the driven gear 20 and the upper rotating shaft will rotate counterclockwise together, so that the lower feed wheel 21 and the upper feed wheel 22 can start rotating at the same time, and then feed the bar located between the lower feed wheel 21 and the upper feed wheel 22 forward.

[0032] Since the cross-section of the teeth on the end faces between the two half-shafts is a right triangle, when the two end faces mesh, the friction between the inclined surfaces of the teeth enables the two half-shafts to drive. When the two end faces separate, the torsion spring can release elastic potential energy instantly, so that the half-shaft fixed to the guide block 13 can rotate, which in turn causes the arc arm 14, the rotating seat 15, and the hook 16 to rotate. Then the two end faces mesh again, and the above actions are repeated, thereby enabling the bar to move forward intermittently.

[0033] When processing bars of different radii, the operator can hold the handle 26 to rotate the eccentric wheel 25, which in turn causes the pull rod 31 to lift the slide 19, thereby adjusting the distance between the upper feed wheel 22 and the lower feed wheel 21. At the same time, the first pressure spring 32 and the second pressure spring 30 press down the slide 19 and the lower pressure seat 24, so that the slide 19 and the upper feed wheel 22 can still maintain a relatively stable state.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A feed rack structure for a cold header, characterized by, The utility model relates to a kind of lifting device, including mounting frame (1), first fixed frame (2) and second fixed frame (3) fixedly connected in mounting frame (1) both sides, lifting seat (4) fixedly connected in mounting frame (1) and with second fixed frame (3) same side arrangement, and gantry slide (5) fixedly connected in the top surface of lifting seat (4), slidingly connected with slide (19) in the gantry slide (5), rotatable upper rotating shaft is arranged in the slide (19), rotatable lower rotating shaft is arranged in the lifting seat (4), the one end of upper rotating shaft and lower rotating shaft towards first fixed frame (2) is respectively fixedly connected with upper feeding wheel (22) and lower feeding wheel (21), first lower pressure spring (32) is fixedly connected between the inner top surface of gantry slide (5) and the top surface of slide (19).

2. A feed rack structure for a cold header as defined in claim 1, wherein The top of gantry slide (5) is fixedly connected with extension table (23) above upper feeding wheel (22), a plurality of through holes (28) are formed in the top surface of extension table (23), guide rod (29) is slidably connected in the through hole (28), and the lower end of guide rod (29) is fixedly connected with lower pressing seat (24) that can be contacted with the outer ring of upper feeding wheel (22).

3. A feed rack structure for a cold header as defined in claim 2, wherein Second lower pressure spring (30) is fixedly connected between lower pressing seat (24) and extension table (23) and is vertically arranged.

4. A feed rack structure for a cold header as defined in claim 3, wherein The top surface of extension table (23) is provided with guide hole (27) that is penetrated, and the guide hole (27) is slidably connected with pull rod (31) fixedly connected with the top surface of slide (19), further including eccentric wheel (25), the outer ring of eccentric wheel (25) is recessed to form interval slot (33) inward, the upper end of pull rod (31) is located in interval slot (33), and pull rod (31) is rotatably connected with eccentric wheel (25), the rotation axis of eccentric wheel (25) is eccentrically arranged with the central axis of eccentric wheel (25), and the outer ring of eccentric wheel (25) is fixedly connected with handle (26).

5. A feed rack structure for a cold header as defined in claim 1, wherein Also include the transmission shaft (12) through the first fixed frame (2) and the second fixed frame (3) and rotationally arranged, the transmission shaft (12) includes two sections of half shaft, the half shaft through the second fixed frame (3) can be along its length direction sliding, two sections of the half shaft are fixedly connected with end face tooth on the end facing each other, two end face teeth are engaged with each other, and the tooth profile section of the end face tooth is a right triangle, the transmission shaft (12) is fixedly connected with the guide block (13) on the end facing the second fixed frame (3), the lower rotating shaft is coaxially fixedly connected with the driving gear (18) after the sliding seat (19) is penetrated on the end away from the lower feeding wheel (21), the upper rotating shaft is coaxially fixedly connected with the driven gear (20) on the end away from the upper feeding wheel (22), the driving gear (18) and the driven gear (20) are engaged, the ratchet wheel (17) is fixedly connected on the lower rotating shaft, the lower rotating shaft is rotatably connected with the rotating seat (15) on the end away from the lower feeding wheel (21), the rotating seat (15) is rotatably connected with the pawl (16) engaged with the ratchet wheel (17) on the end away from its rotation axis, the rotating seat (15) is rotatably connected with the arc-shaped arm (14) on the other end away from its rotation axis, the guide block (13) is provided with a sliding groove on the end away from the transmission shaft (12), the sliding groove is slidably connected with the sliding block, the sliding block is rotatably connected with the connecting shaft, the connecting shaft is rotatably connected with the arc-shaped arm (14) on the end away from the rotating seat (15), the transmission shaft (12) is provided with a torsion spring outside, one end of the torsion spring is fixedly connected with the second fixed frame (3), the other end of the torsion spring is fixedly connected with the guide block (13).

6. A feed rack structure for a cold header as defined in claim 5, wherein, The second fixed frame (3) is fixedly connected with the vertical frame (7) on the end away from the mounting frame (1), and the vertical frame (7) is rotatably connected with a plurality of vertical rollers (10) through the first rotating shaft (11).

7. A feed rack structure for a cold header as defined in claim 6, wherein The vertical frame (7) is fixedly connected with the horizontal frame (6) on the end away from the second fixed frame (3), and the horizontal frame (6) is rotatably connected with a plurality of horizontal rollers (8) through the second rotating shaft (9).

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