A countersunk screw countersunk forming cold header

Abstract

The utility model relates to screw processing technology technical field, the utility model provides a kind of countersunk screw countersunk forming cold header, it includes: cold header main part, the side of cold header main part is provided with feeder frame, the lower side of the compaction feed wheel is located the front surface of feeder frame and is provided with drive feed wheel, the side of drive feed wheel is installed with driving mechanism by pivot in the rear surface of feeder frame, driving mechanism includes: drive cam, swing rocker, first ratchet gear, second ratchet gear, first ratchet gear and pivot between installation have internal thread installation pipe, second ratchet gear and first ratchet gear between installation have external thread installation pipe. First ratchet gear can utilize external thread installation pipe and the pivot of drive feed wheel to install and disassemble, when external second ratchet gear wears after long time work, after dismounting, again with the first ratchet gear of inside position meshing rotation to outside side is adjusted to the original installation position and is temporarily used.

Description

Technical Field

[0001] This utility model relates to the field of screw processing technology, specifically to a cold heading machine for countersunk screws. Background Technology

[0002] An automatic cold heading machine is a device that automatically feeds bars or coils to a certain length at room temperature after uncoiling and straightening, then cuts them into billets by a cutting mechanism, and finally sends them sequentially to various workstations for upsetting. Within the equipment's performance range, different forming processes can be arranged according to the time allocation of the work cycle diagram to upset parts of different shapes. Automatic cold heading machines are characterized by being pollution-free throughout their entire life cycle, energy-efficient, safe, and recyclable, making them a high-tech piece of equipment encouraged by the state. The parts produced are no longer limited to balls, rollers, bolts, and nuts, but are developing towards high-precision, complex-deformation workpieces such as rivets, stepped shafts, and bullet casings, resulting in a wide variety and broad range of products. By simply changing the mold, a single machine can process multiple varieties of products. It is a non-cutting, high-efficiency processing method, producing more than 200 parts per minute, which is dozens or even hundreds of times faster than metal cutting machine tools. It is a new type of equipment for the parts and components manufacturing industry. Cold heading not only improves productivity and saves metal materials, but also improves the tensile strength of the product because the metal fibers are formed into a certain shape by the mold. Its surface quality and dimensional accuracy are also improved. Most importantly, it can significantly reduce the product manufacturing cost. The process is highly flexible, the product technology is mature and reliable, and it can meet the diversified and personalized needs of the market. The accuracy and surface quality of the cold heading wire are very important to the cold heading forming process. How to obtain high-quality wire by updating and optimizing the traditional feeding mechanism based on the existing cold heading equipment is the problem that needs to be solved in this discussion.

[0003] In the existing technology, when cold heading countersunk screws, if the feeding length is different, the cold heading of the material will easily lead to inconsistent processing dimensions of the countersunk head, which will affect the subsequent use effect. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this utility model provide a cold heading machine for countersunk screws, which solves the technical problem of a cold heading machine for countersunk screws in related technologies / existing technologies.

[0005] According to one aspect, at least one embodiment of the present invention provides a cold heading machine for countersunk screws, comprising: a cold heading machine body, a feeding frame disposed on one side of the cold heading machine body, a pressing feeding wheel disposed above the front surface of the feeding frame, a driving feeding wheel disposed below the pressing feeding wheel on the front surface of the feeding frame, and a driving mechanism mounted on one side of the driving feeding wheel on the rear surface of the feeding frame via a rotating shaft, the driving mechanism comprising: a driving cam, a rocker arm, a first ratchet gear, and a second ratchet gear, an internally threaded mounting tube being installed between the first ratchet gear and the rotating shaft, and an externally threaded mounting tube being installed between the second ratchet gear and the first ratchet gear.

[0006] In a countersunk screw countersunk forming cold heading machine provided by at least one embodiment of the present invention, a limiting slide rail is installed below the second ratchet on the rear surface of the feeding frame, a limiting slider is installed on the outer side of the limiting slide rail near the swing rocker arm, a snap-fit ​​pawl is installed on the outer side of the limiting slider corresponding to the position of the second ratchet, and a return spring is installed on the side of the limiting slider away from the swing rocker arm.

[0007] At least one embodiment of this utility model also provides a cold heading machine for countersunk screws, wherein a cutting mechanism is installed on the upper end of the cold heading machine body near the feeding frame, and a stamping mechanism is installed on the side of the cold heading machine body away from the feeding frame.

[0008] At least one embodiment of this utility model also provides a cold heading machine for countersunk screws, wherein a spare feeding wheel is installed on the front surface of both the pressing feeding wheel and the driving feeding wheel.

[0009] At least one embodiment of this utility model also provides a countersunk screw countersunk forming cold heading machine, wherein the inside of the rotating shaft is provided with a meshing screw hole corresponding to the position of the internal thread mounting tube, and the inside of the internal thread mounting tube is provided with a mounting screw hole corresponding to the position of the external thread mounting tube.

[0010] At least one embodiment of this utility model also provides a countersunk screw countersunk forming cold heading machine, wherein the limiting slider is slidably connected to the limiting slide rail, and a fixing baffle is installed on the rear surface of the feeding frame at one end of the return spring.

[0011] At least one embodiment of this utility model also provides a countersunk screw countersunk forming cold heading machine, wherein the lower end of the cutting mechanism is located inside the body of the cold heading machine and a cutting tool is installed thereon, and one end of the stamping mechanism is located inside the body of the cold heading machine and a stamping die is installed thereon.

[0012] At least one embodiment of this utility model also provides a cold heading machine for countersunk screws, wherein the spare feeding wheel is fixedly connected to the pressing feeding wheel and the driving feeding wheel.

[0013] At least one embodiment of this utility model also provides a cold heading machine for countersunk screws, wherein the pressing feeding wheel is movably connected to the feeding machine frame via a movable shaft, and a swing shaft is installed between the swing rocker arm and the main body of the cold heading machine.

[0014] At least one embodiment of this utility model also provides a cold heading machine for countersunk screws, wherein a drive motor is connected to one side of the drive cam, the engaging pawl is movably connected to the limiting slider, and the engaging pawl is engaged with the second ratchet gear.

[0015] The beneficial effects of this utility model are as follows: In this utility model, the first ratchet and the second ratchet are disassembled and installed through the internal threaded mounting tube. The first ratchet can be installed and disassembled with the shaft of the drive feeding wheel using the external threaded mounting tube. When the outer second ratchet wears out after long-term operation, it is removed. Then, the inner first ratchet is rotated outward to mesh with it and adjusted to the original installation position for temporary use. Both the pressing feed wheel and the drive feed wheel have spare feed wheels installed on their front surfaces. Therefore, the inside of the pressing feed wheel and the drive feed wheel has two sets of feeding grooves. When the inside of the grooves is worn, the feeding hole position can be changed to continue feeding. After the batch processing is completed, the roller grooves of the pressing feed wheel and the drive feed wheel are welded and machined into a deep arc for subsequent feeding processing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a cold heading machine for countersunk screws in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the feeding frame structure of a countersunk screw countersunk forming cold heading machine in one embodiment; Figure 3 for Figure 1 A schematic diagram of the drive mechanism of a countersunk screw countersunk forming cold heading machine in one embodiment; Figure 4 for Figure 1 A schematic diagram of the back structure of the feeding frame of a countersunk screw countersunk forming cold heading machine in one embodiment; Figure 5 for Figure 1 A schematic diagram of the ratchet gear installation structure for a countersunk screw countersunk forming cold heading machine is shown in one embodiment. In the diagram: 1. Cold heading machine body; 2. Feeder frame; 3. Pressing feeder wheel; 4. Drive feeder wheel; 5. Cutting mechanism; 6. Stamping mechanism; 201. Drive cam; 202. Swinging rocker arm; 203. Limiting slide rail; 204. First ratchet gear; 205. Second ratchet gear; 206. Limiting slider; 207. Snap-on pawl; 208. Return spring; 209. Internal threaded mounting tube; 210. External threaded mounting tube; 401. Spare feeder wheel. Detailed Implementation

[0018] The present invention 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 invention and not intended to limit its scope.

[0019] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly 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.

[0022] 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 utility model.

[0023] 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.

[0024] like Figures 1-5 As shown, this invention illustrates a countersunk screw cold heading machine according to one embodiment of the present invention. A drive mechanism integrally arranged behind the feeding frame 2 is used to feed the rod to be processed at a uniform speed. The drive mechanism includes: a drive cam 201, a rocker arm 202, a first ratchet 204, and a second ratchet 205. An internally threaded mounting tube 209 is installed between the first ratchet 204 and the rotating shaft, and an externally threaded mounting tube 210 is installed between the second ratchet 205 and the first ratchet 204. A meshing screw hole is formed inside the rotating shaft corresponding to the position of the internally threaded mounting tube 209, and a mounting screw hole is formed inside the internally threaded mounting tube 209 corresponding to the position of the externally threaded mounting tube 210. An embedded groove is provided on the side surface of the first ratchet 204, and a protrusion that mates with the groove is provided on the corresponding position on the side surface of the second ratchet 205. At the same time, the thread directions of the internal thread mounting tube 209 and the external thread mounting tube 210 are set in opposite directions. After the second ratchet 205 and the first ratchet 204 are rotated and assembled, the upper teeth positions of the first ratchet 204 and the second ratchet 205 will correspond one-to-one. Therefore, the second ratchet 205 can be removed after long-term wear and tear, and the first ratchet 204 on the inner side can be rotated outward to be adjusted to the original installation position of the second ratchet 205 for temporary use.

[0025] A swing arm 202 is connected to a swing shaft between itself and the main body 1 of the cold heading machine. A drive motor is connected to one side of the drive cam 201 to control the drive cam 201 to perform circular motion. The drive cam 201 will control the swing arm 202 to swing back and forth on the rear surface of the feeder frame 2 using the swing shaft. A limit slide rail 203 is installed below the second ratchet 205 on the rear surface of the feeder frame 2. A limit slider 206 is installed on the outer side of the limit slide rail 203 near the swing arm 202. A pawl 207 is movably connected to the limit slider 206. The limit slider 206 is slidably connected to the limit slide rail 203. When the entire 206 moves on the outside of the limiting slide rail 203, the locking pawl 207 on the limiting slider 206 engages with the second ratchet 205. By controlling the push and disengagement of one tooth position of the second ratchet 205, the second ratchet 205 is pushed. A return spring 208 is installed on the side of the limiting slider 206 away from the swing arm 202. A fixed baffle is installed on the rear surface of the feeder frame 2 at one end of the return spring 208. When the second ratchet 205 disengages and the locking of one tooth position is engaged, the return spring 208 resets the entire limiting slider 206.

[0026] A cutting mechanism 5 is installed on the upper end of the cold heading machine body 1, near the side of the feeding frame 2. A stamping mechanism 6 is installed on the side of the cold heading machine body 1 away from the feeding frame 2. Spare feeding wheels 401 are installed on the front surfaces of the pressing feeding wheel 3 and the driving feeding wheel 4 in front of the feeding frame 2. The spare feeding wheels 401 are fixedly connected to the pressing feeding wheel 3 and the driving feeding wheel 4. Therefore, the pressing feeding wheel 3 and the driving feeding wheel 4 have two sets of feeding grooves inside. When the feeding inside the groove is worn, the feeding hole position can be changed to continue feeding. When the rod is cut from the groove between the pressing feeding wheel 3 and the driving feeding wheel 4... When the material is conveyed into the cold heading machine body 1, the lower end of the cutting mechanism 5 is equipped with a cutting tool inside the cold heading machine body 1, and one end of the stamping mechanism 6 is equipped with a stamping die inside the cold heading machine body 1. The stamping mechanism 6 above the cold heading machine body 1 drives the tool to cut the material. The clamping and feeding mechanism inside the cold heading machine body 1 transmits the cut rod to the stamping die position. Then, the rod is cold heading stamped by the stamping mechanism 6. After the stamping inside the first die is completed, the clamping and feeding mechanism is used to clamp the rod into the next die. Therefore, after multiple stampings, a countersunk head is formed on the rod.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model 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 solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cold heading machine for countersunk screws, characterized in that, The cold heading machine includes a main body (1), a feeding frame (2) is provided on one side of the main body (1), a pressing feeding wheel (3) is provided above the front surface of the feeding frame (2), a driving feeding wheel (4) is provided below the pressing feeding wheel (3) on the front surface of the feeding frame (2), and a driving mechanism is installed on one side of the driving feeding wheel (4) on the rear surface of the feeding frame (2) via a rotating shaft. The driving mechanism includes a driving cam (201), a swing rocker arm (202), a first ratchet (204), and a second ratchet (205). An internal threaded mounting tube (209) is installed between the first ratchet (204) and the rotating shaft, and an external threaded mounting tube (210) is installed between the second ratchet (205) and the first ratchet (204).

2. The countersunk screw cold heading machine according to claim 1, characterized in that, A limiting slide rail (203) is installed below the second ratchet (205) on the rear surface of the feeder frame (2). A limiting slider (206) is installed on the outer side of the limiting slide rail (203) near the swing rocker arm (202). A snap-fit ​​pawl (207) is installed on the outer side of the limiting slider (206) corresponding to the position of the second ratchet (205). A return spring (208) is installed on the side of the limiting slider (206) away from the swing rocker arm (202).

3. The countersunk screw cold heading machine according to claim 1, characterized in that, A cutting mechanism (5) is installed on the upper end of the cold heading machine body (1) on the side close to the feeding frame (2), and a stamping mechanism (6) is installed on the side of the cold heading machine body (1) away from the feeding frame (2).

4. A cold heading machine for countersunk screws according to claim 1, characterized in that, The front surfaces of both the pressing feed wheel (3) and the driving feed wheel (4) are equipped with spare feed wheels (401).

5. A cold heading machine for countersunk screws according to claim 1, characterized in that, The shaft has a meshing screw hole inside corresponding to the position of the internal thread mounting tube (209), and the internal thread mounting tube (209) has a mounting screw hole inside corresponding to the position of the external thread mounting tube (210).

6. A cold heading machine for countersunk screws according to claim 2, characterized in that, The limiting slider (206) is slidably connected to the limiting slide rail (203), and a fixed baffle is installed on the rear surface of the feeder frame (2) at one end of the reset spring (208).

7. A cold heading machine for countersunk screws according to claim 3, characterized in that, The lower end of the cutting mechanism (5) is located inside the cold heading machine body (1) and a cutting tool is installed thereon. One end of the stamping mechanism (6) is located inside the cold heading machine body (1) and a stamping die is installed thereon.

8. A cold heading machine for countersunk screws according to claim 4, characterized in that, The spare feed wheel (401) is fixedly connected to the pressing feed wheel (3) and the driving feed wheel (4).

9. A cold heading machine for countersunk screws according to claim 1, characterized in that, The pressing feed wheel (3) is movably connected to the feeder frame (2) via a movable shaft, and a swing shaft is installed between the swing arm (202) and the cold heading machine body (1).

10. A cold heading machine for countersunk screws according to claim 2, characterized in that, A drive motor is connected to one side of the drive cam (201), the snap-fit ​​pawl (207) is movably connected to the limit slider (206), and the snap-fit ​​pawl (207) snaps into the second ratchet gear (205).

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