Feeding adjusting device for cold header

Abstract

The invention discloses a feeding adjusting device for a cold header, which relates to the technical field of feeding equipment and comprises a swing driver, a swing component, a connecting rod and a ratchet mechanism. The swing assembly comprises a first swing arm, a lead screw, a movable nut in threaded connection with the lead screw and a worm driver or a manual driver. One end of the first swing arm is rotationally arranged on the cold header body, and the other end is connected with the output end of the swing driver; the lead screw is rotationally connected with the first swing arm. The worm driver comprises a worm gear, a worm and a first driver; the manual driver comprises a hand-cranking wheel and a limiting mechanism; the ratchet wheel mechanism comprises a ratchet wheel, a pawl rotationally arranged on the second swing arm, the second swing arm and a restorer used for keeping the pawl located in a wheel groove of the ratchet wheel; the ratchet wheel is coaxially and fixedly connected with the feeding wheel rotating shaft; the second swing arm is rotationally arranged on the feeding wheel rotating shaft; the two ends of the connecting rod are rotationally connected with the second swing arm and the movable nut. The steel feeding length can be controlled in a high-precision mode, and operation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of feeding equipment, in particular to a feeding regulating device used on a cold heading machine. Background Art

[0002] Cold heading machine is a kind of stamping machine in mechanical manufacturing. The steel used to manufacture fasteners and connectors (such as bolts, nuts, screws, rivets, etc.) by cold heading is called cold heading steel, commonly known as rivet screw steel. Commonly used are quenched and tempered alloy steel, low temperature tempered alloy structural steel, low carbon low alloy high strength steel, ferrite-martensite dual phase steel, etc. Cold heading is the use of metal plastic forming at room temperature. The use of cold heading process to manufacture fasteners is not only efficient and good quality, but also saves materials and low cost.

[0003] In the production and processing of cold heading machines, the length of steel feeding is controlled to control the processing of steels of different sizes. Therefore, it is necessary to provide a feeding adjustment device for cold heading machines that can control the steel feeding length with high precision and is simple and convenient to operate. Summary of the invention

[0004] The purpose of the present invention is to provide a feeding adjustment device for a cold heading machine to solve the problems existing in the above-mentioned prior art, realize high-precision control of the feeding length of steel, and be simple and convenient to operate.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a feeding adjustment device for a cold heading machine, comprising a swing driver, a swing assembly, a connecting rod and a ratchet mechanism;

[0007] The swing assembly includes a first swing arm, a screw rod, a moving nut and a worm drive or a manual drive; the first swing arm has a first end and a second end, the first end is used to be rotatably arranged on the body of the cold heading machine around a first axis, the output end of the swing drive is connected to the second end, and the output end of the swing drive can drive the first swing arm to rotate around the first axis; the two ends of the screw rod are respectively rotatably connected to the first swing arm, and the screw rod is threadedly connected to the internal threaded hole of the moving nut;

[0008] The worm drive comprises a worm wheel, a worm and a first drive; the worm wheel is rotatably arranged in the first swing arm, and the worm wheel is coaxially fixedly connected with the lead screw; the worm is rotatably arranged in the first swing arm, and the worm is meshed with the worm wheel; the first drive can drive the worm to rotate and drive the lead screw to rotate relative to the first swing arm through the worm wheel;

[0009] The manual driver comprises a hand wheel and a limiting mechanism, the hand wheel is fixedly arranged at a portion of one end of the screw rod passing through the first swing arm, and the limiting mechanism is used to limit the rotation of the screw rod;

[0010] The ratchet mechanism includes a ratchet, a pawl, a second swing arm and a resetter; the ratchet is used to be coaxially fixedly connected with the rotating shaft of the feeding wheel; the second swing arm has a linkage end, a mounting end and a rotating portion, and the rotating portion is located between the linkage end and the mounting end; the rotating portion is coaxially rotatably arranged on the rotating shaft of the feeding wheel through a bearing; the linkage end is rotatably connected to one end of the connecting rod around a second axis, and the other end of the connecting rod is rotatably connected to the movable nut around a third axis, and the second axis, the third axis and the first axis are all parallel to the rotating shaft axis of the feeding wheel; the mounting end is rotatably connected with the pawl around a fourth axis, and the resetter is used to drive the pawl to rotate, and the resetter can keep the free end of the pawl in the wheel groove of the ratchet.

[0011] Preferably, both ends of the screw rod are rotatably connected to the first swing arm via bearings.

[0012] Preferably, the first swing arm has a first cavity and a side through-hole connected to the first cavity; the screw rod is rotatably arranged in the first cavity, and the movable nut is threadedly connected to the screw rod corresponding to the side through-hole; a U-shaped mounting groove is arranged at one end of the connecting rod, and connecting shafts are fixedly arranged on both sides of the movable nut, and each connecting shaft is rotatably connected to the corresponding inner wall in the U-shaped mounting groove around the third axis.

[0013] Preferably, a pawl shaft is provided on the mounting end for rotation around the fourth axis; a pawl mounting seat is fixedly provided on one end of the pawl shaft close to the ratchet wheel, and the pawl is removably fixed on the pawl mounting seat; a first support frame is fixedly provided on the pawl shaft; a second support frame is fixedly provided on the second swing arm; the resetter is a telescopic cylinder, one end of the piston rod of the telescopic cylinder is rotatably connected to the first support frame, and one end of the cylinder body of the telescopic cylinder is rotatably connected to the second support frame.

[0014] Preferably, an extended side panel and a movable side panel are provided at one end of the connecting rod, the movable side panel is arranged in parallel with the extended side panel, the extended side panel and the connecting rod are integrally formed, and the movable side panel can be detachably fixed on the connecting rod, the extended side panel, the movable side panel and the corresponding ends of the connecting rod jointly form the U-shaped mounting groove; the two connecting shafts are rotatably connected to the corresponding extended side panel and the movable side panel respectively.

[0015] Preferably, the swing driver includes a driving main wheel, a first connecting pin and a push rod; the driving main wheel is used for rotatably connecting to the body of the cold heading machine and meshing with a rotating output wheel on the cold heading machine; the first connecting pin is fixedly arranged on the driving main wheel, one end of the push rod is rotatably connected to the first connecting pin around a fifth axis, and the other end of the push rod can be rotatably connected to the second end of the first swing arm around a sixth axis; both the fifth axis and the sixth axis are parallel to the first axis.

[0016] Preferably, a second connecting pin is fixedly arranged at the second end of the first swing arm, and the end of the push rod is rotatably connected to the second connecting pin around the sixth axis through a bearing.

[0017] Preferably, a perforation is provided at the mounting end, and the pawl rotating shaft is rotatably arranged in the perforation through a bearing; the pawl rotating shaft extends out of the perforation away from the pawl mounting seat and is fixedly connected to a limiting clamp. The limiting clamp has a clamping hole and a clamping gap communicating with the clamping hole. A clamping hole is provided at a position corresponding to the clamping gap on the limiting clamp. A bolt for adjusting the size of the clamping gap is inserted into the clamping hole, and the reduction of the clamping gap can clamp the clamping hole on the corresponding end of the pawl rotating shaft.

[0018] Preferably, when the swing assembly includes the worm driver, the first driver is a reduction motor.

[0019] Preferably, when the swing assembly includes the worm driver, the worm gear is fixedly connected to the lead screw through a flat key.

[0020] The present invention has achieved the following technical effects compared with the prior art:

[0021] The feeding adjustment device for a cold heading machine provided by the present invention cooperates with a ratchet mechanism and a swinging assembly including a worm drive or a manual drive to jointly realize the control of a single rotation angle of a feeding wheel (i.e., the corresponding single feeding length); the swinging assembly can reasonably choose to adopt a worm drive or a manual drive according to cost requirements; when a worm drive is adopted, the first drive drives the worm to rotate, and since the worm is meshed with the worm wheel, according to the transmission principle of the worm gear mechanism, the worm wheel will rotate accordingly, and since the worm wheel is coaxially fixedly connected with the lead screw, the self-rotation movement of the lead screw can be realized, and the self-rotation of the lead screw can drive the moving nut to realize position adjustment; the movement is transmitted to the lead screw by the worm wheel, so that the rotation angle and number of turns of the lead screw can be accurately controlled, and then the linear displacement of the moving nut can be accurately controlled, so that the connecting rod can be realized High-precision position adjustment of the end, that is, the control of different swing amplitudes of the second swing arm driven by the corresponding connecting rod; based on the self-locking function of the worm and the worm wheel, the stability of the screw after adjusting the position can be achieved; when a manual drive is selected, the rotation and locking of the screw can be achieved through the hand-cranked wheel and the limit mechanism; the ratchet mechanism has the characteristics of one-way transmission. Under the action of the resetter, the free end of the pawl is always kept in the wheel groove of the ratchet. When the second swing arm rotates driven by the connecting rod, the pawl pushes the ratchet to rotate in one direction, thereby driving the feeding wheel to achieve one-way feeding. This one-way transmission method can effectively prevent the feeding wheel from reversing, ensure the stability and reliability of the feeding process, and avoid the problem of backlash or inaccurate feeding length during steel feeding; through the mutual cooperation of the above structures, high-precision control of the steel feeding length is achieved, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a feeding adjustment device for a cold heading machine provided by the present invention;

[0024] Figure 2 A schematic diagram of the structure of a swing assembly using a worm drive in a feed adjustment device for a cold heading machine provided by the present invention;

[0025] Figure 3 A schematic diagram showing the structure and position correspondence of each component of the ratchet mechanism in the feeding adjustment device for a cold heading machine provided by the present invention;

[0026] Figure 4 A front view of the feeding adjustment device for a cold heading machine provided by the present invention installed on the cold heading machine;

[0027] Figure 5 The present invention is a schematic structural diagram of a feeding adjustment device for a cold heading machine provided by the present invention installed on the cold heading machine from a top view.

[0028] In the figure:

[0029] 10-swing drive; 11-driving main wheel; 12-first connecting pin; 13-push rod;

[0030] 20-swing assembly; 21-first swing arm; 211-side through-long hole; 22-screw; 23-moving nut; 24-worm; 25-worm wheel; 26-first driver; 27-second connecting pin;

[0031] 30-connecting rod; 31-U-shaped mounting groove; 32-extended side plate; 33-movable side plate;

[0032] 40-ratchet mechanism; 41-second swing arm; 411-linking end; 412-rotating part; 413-mounting end; 42-ratchet; 43-pawl; 44-pawl mounting seat; 45-resetter; 46-first support frame; 47-limiting clamp; 471-clamping hole; 472-clamping gap; 473-clamping hole; 48-second support frame;

[0033] 50-body of cold heading machine;

[0034] 60-Rotation axis of the feeding wheel. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The purpose of the present invention is to provide a feeding adjustment device for a cold heading machine to solve the problems existing in the prior art, realize high-precision control of the feeding length of steel materials, and be simple and convenient to operate.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Embodiment 1

[0039] This embodiment provides a feeding adjustment device for a cold heading machine, such as Figure 1 to Figure 5 As shown, it includes a swing driver 10, a swing assembly 20, a connecting rod 30 and a ratchet mechanism 40;

[0040] The swing assembly 20 includes a first swing arm 21, a screw rod 22, a moving nut 23 and a worm drive or a manual drive; the first swing arm 21 has a first end and a second end, the first end is used to be rotatably arranged on the body 50 of the cold heading machine around a first axis, the output end of the swing drive 10 is connected to the second end, and the output end of the swing drive 10 can drive the first swing arm 21 to rotate around the first axis; the two ends of the screw rod 22 are respectively rotatably connected to the first swing arm 21, and the screw rod 22 is threadedly connected to the internal threaded hole of the moving nut 23;

[0041] The worm drive includes a worm wheel 25, a worm 24 and a first drive 26; the worm wheel 25 is rotatably disposed in the first swing arm 21, and the worm wheel 25 is coaxially fixedly connected with the lead screw 22; the worm 24 is rotatably disposed in the first swing arm 21, and the worm 24 is meshed with the worm wheel 25; the first drive 26 can drive the worm 24 to rotate and drive the lead screw 22 to rotate relative to the first swing arm 21 through the worm wheel 25;

[0042] The manual driver includes a hand-cranked wheel and a limiting mechanism. A hand-cranked wheel is fixedly provided at a portion where one end of the screw rod 22 passes through the first swing arm 21. The limiting mechanism is used to limit the rotation of the screw rod 22 (the limiting mechanism is an existing structure that can limit the rotation of the screw rod 22, which will not be described in detail here. For example, the limiting mechanism includes a stop pin, a pin hole is provided on the side wall of the end portion where the screw rod 22 passes through, and the stop pin is slidably provided on the first swing arm 21. The stop pin can be inserted into the corresponding pin hole in a radial direction of the screw rod 22 to limit the rotation of the screw rod 22 relative to the first swing arm 21);

[0043] The ratchet mechanism 40 includes a ratchet 42, a pawl 43, a second swing arm 41 and a resetter 45 (which can be a telescopic cylinder or other existing equipment that can achieve the same function); the ratchet 42 is used to be coaxially fixedly connected with the rotating shaft 60 of the feeding wheel; the second swing arm 41 has a linkage end 411, a mounting end 413 and a rotating portion 412, and the rotating portion 412 is located between the linkage end 411 and the mounting end 413; the rotating portion 412 is coaxially rotatably arranged on the rotating shaft 60 of the feeding wheel through a bearing; the linkage end 411 is rotatably connected to one end of the connecting rod 30 around the second axis, and the other end of the connecting rod 30 is rotatably connected to the moving nut 23 around the third axis, and the second axis, the third axis and the first axis are all parallel to the axis of the rotating shaft 60 of the feeding wheel; the mounting end 413 is rotatably connected with the pawl 43 around the fourth axis, and the resetter 45 is used to drive the pawl 43 to rotate, and the resetter 45 can keep the free end of the pawl 43 in the wheel groove of the ratchet 42.

[0044] The ratchet mechanism 40 and the swing assembly 20 including a worm drive or a manual drive cooperate with each other to jointly realize the control of the single rotation angle of the feed wheel (i.e., the corresponding single feeding length); the swing assembly 20 can reasonably choose to use a worm drive or a manual drive according to cost requirements; when a worm drive is used, the first drive 26 drives the worm 24 to rotate, and since the worm 24 is meshing with the worm wheel 25, according to the transmission principle of the worm wheel 25 and worm 24 mechanism, the worm wheel 25 will rotate accordingly, and because the worm wheel 25 is coaxially fixedly connected with the screw 22, the self-rotation movement of the screw 22 can be realized, and the self-rotation of the screw 22 can drive the moving nut 23 to realize position adjustment; the motion is transmitted to the screw 22 by the worm wheel 25, so that the rotation angle and number of turns of the screw 22 can be accurately controlled, and then the linear displacement of the moving nut 23 can be accurately controlled, so that the high-precision end of the connecting rod 30 can be realized. The position adjustment of the degree, that is, the corresponding connecting rod 30 drives the second swing arm 41 to control the different swing amplitudes; based on the self-locking function of the worm 24 and the worm wheel 25, the stability of the screw rod 22 after adjusting the position can be achieved; when a manual drive is selected, the rotation and locking of the screw rod 22 can be achieved through the hand-cranked wheel and the limit mechanism; the ratchet mechanism 40 has the characteristics of one-way transmission, and the free end of the pawl 43 is always kept in the wheel groove of the ratchet 42 under the action of the resetter 45. When the second swing arm 41 rotates driven by the connecting rod 30, the pawl 43 pushes the ratchet 42 to rotate in one direction, thereby driving the feeding wheel to achieve one-way feeding. This one-way transmission method can effectively prevent the feeding wheel from reversing, ensure the stability and reliability of the feeding process, and avoid the problem of backlash or inaccurate feeding length during steel feeding; through the mutual cooperation of the above structures, high-precision control of the steel feeding length is achieved, and the operation is simple and convenient.

[0045] Among them, the relevant setting description of the swing drive 10 is as follows:

[0046] In the optional scheme of this embodiment, it is more preferred that Figure 1 , Figure 4 and Figure 5 As shown, the swing driver 10 includes a driving main wheel 11 (necessary weight reduction holes may be provided on the driving main wheel 11, and mounting positioning holes corresponding to different radial positions may be provided on the driving main wheel 11, and a first connecting pin 12 is used to be fixedly connected in the corresponding mounting positioning hole), a first connecting pin 12 and a push rod 13; the driving main wheel 11 is used to be rotatably connected to the fuselage 50 of the cold heading machine and mesh with a rotating output wheel on the cold heading machine; the first connecting pin 12 is fixedly provided on the driving main wheel 11, one end of the push rod 13 is rotatably connected to the first connecting pin 12 around a fifth axis, and the other end of the push rod 13 can be rotatably connected to the second end of the first swing arm 21 around a sixth axis; the fifth axis and the sixth axis are both parallel to the first axis.

[0047] In the optional scheme of this embodiment, it is more preferred that Figure 1 , Figure 4 and Figure 5 As shown, a second connecting pin 27 is fixedly provided at the second end of the first swing arm 21, and the end of the push rod 13 is rotatably connected to the second connecting pin 27 around the sixth axis through a bearing.

[0048] Among them, the relevant setting description of the swing assembly 20 is as follows:

[0049] In the optional scheme of this embodiment, it is more preferred that both ends of the screw rod 22 are rotatably connected to the first swing arm 21 through bearings respectively.

[0050] In the optional scheme of this embodiment, it is more preferred that Figure 1 and Figure 2 As shown, the first swing arm 21 has a first cavity and a side through-hole 211 connected to the first cavity; the screw rod 22 is rotatably arranged in the first cavity, and the movable nut 23 is threadedly connected to the screw rod 22 corresponding to the side through-hole 211; a U-shaped mounting groove 31 is arranged at one end of the connecting rod 30, and connecting shafts are fixedly arranged on both sides of the movable nut 23, and each connecting shaft is rotatably connected to the corresponding inner wall in the U-shaped mounting groove 31 around a third axis.

[0051] Specifically, the outer side of the movable nut 23 has two opposite limiting surfaces, and the inner wall of the first cavity corresponding to each limiting surface forms a guide surface. The two limiting surfaces cooperate with the corresponding guide surfaces to limit the rotation of the movable nut 23 relative to the axis of the screw rod 22.

[0052] In the optional solution of this embodiment, it is more preferred that when the swing assembly 20 includes a worm drive, the first drive 26 is a reduction motor.

[0053] In the optional solution of this embodiment, it is more preferred that when the swing assembly 20 includes a worm drive, the worm wheel 25 is fixedly connected to the screw rod 22 through a flat key.

[0054] In the optional scheme of this embodiment, it is more preferred that Figure 1 and Figure 5 As shown, an extended side plate 32 and a movable side plate 33 are provided at one end of the connecting rod 30. The movable side plate 33 is arranged in parallel with the extended side plate 32. The extended side plate 32 and the connecting rod 30 are integrally formed, and the movable side plate 33 can be detachably fixed on the connecting rod 30. The extended side plate 32, the movable side plate 33 and the corresponding ends of the connecting rod 30 jointly form a U-shaped mounting groove 31; the two connecting shafts are rotatably connected to the corresponding extended side plate 32 and the movable side plate 33 respectively.

[0055] The following are the relevant settings of the ratchet mechanism 40:

[0056] In the optional scheme of this embodiment, it is more preferred that Figure 1 and Figure 3 As shown, the mounting end 413 is provided with a pawl 43 rotating shaft which rotates around the fourth axis; a pawl mounting seat 44 is fixedly provided at one end of the pawl 43 rotating shaft close to the ratchet 42, and the pawl 43 is detachably fixed on the pawl mounting seat 44; a first support frame 46 is fixedly provided on the pawl 43 rotating shaft; a second support frame 48 is fixedly provided on the second swing arm 41; the resetter 45 is a telescopic cylinder, one end of the piston rod of the telescopic cylinder is rotatably connected to the first support frame 46, and one end of the cylinder body of the telescopic cylinder is rotatably connected to the second support frame 48.

[0057] In the optional scheme of this embodiment, it is more preferred that Figure 1 and Figure 3 As shown, the mounting end 413 is provided with a through hole, and the pawl 43 shaft is rotatably arranged in the through hole through a bearing; the pawl 43 shaft passes through the through hole away from the pawl mounting seat 44 and is fixedly connected to a limiting clamp 47, the limiting clamp 47 has a clamping hole 471 and a clamping gap 472 connected to the clamping hole 471, and a clamping hole 473 is provided at a position corresponding to the clamping gap 472 on the limiting clamp 47, a bolt for adjusting the size of the clamping gap 472 is passed through the clamping hole 473, and the reduction of the clamping gap 472 can enable the clamping hole 471 to be clamped on the corresponding end of the pawl 43 shaft.

[0058] Among them, about other related settings description:

[0059] Specifically, each component of the feed adjustment device for the cold heading machine of the present embodiment can be connected to the control display screen of the cold heading machine by signal, and a more intelligent linkage can be achieved through its control display screen; for example, when the swing assembly 20 adopts a worm drive, the required feeding length data can be directly selected and set on the control display screen, and the controller of the cold heading machine automatically controls the worm drive and the screw rod 22 and other components to adjust the end of the connecting rod 30 to the position on the screw rod 22 corresponding to the set feeding length, thereby achieving accurate setting and adjustment of the feeding length.

[0060] Specifically, the threaded adjustment of the screw rod 22 and the movable nut 23 can achieve high-precision adjustment, reduce the error range, and effectively improve the quality and consistency of the product. For example, when producing high-precision bolts, the length of the screw rod part can be accurately controlled.

[0061] Specifically, corresponding positioning devices can be provided on the screw rod 22 and the movable nut 23 for intelligently and accurately displaying the relative position of the movable nut 23 on the screw rod 22 on the control display screen of the cold heading machine (it can adopt existing equipment that can realize this function, and will not be elaborated here), so that the digitized position of the movable nut 23 on the screw rod 22 can be presented on the control display screen of the cold heading machine.

[0062] Specifically, a manual drive or a worm drive is used, and the operator can intuitively control it through a hand wheel or a control display screen of the cold heading machine. The feeding length and the precise position of the moving nut 23 on the screw rod 22 can be clearly seen through the digital display on the control display screen of the cold heading machine. It does not require complicated operating skills to get started, thus reducing the difficulty of operation.

[0063] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A feeding adjustment device for a cold heading machine, characterized in that: It includes a swing driver, a swing assembly, a connecting rod and a ratchet mechanism; The swing assembly includes a first swing arm, a screw rod, a moving nut and a worm drive or a manual drive; the first swing arm has a first end and a second end, the first end is used to be rotatably arranged on the body of the cold heading machine around a first axis, the output end of the swing drive is connected to the second end, and the output end of the swing drive can drive the first swing arm to rotate around the first axis; the two ends of the screw rod are respectively rotatably connected to the first swing arm, and the screw rod is threadedly connected to the internal threaded hole of the moving nut; The worm drive comprises a worm wheel, a worm and a first drive; the worm wheel is rotatably arranged in the first swing arm, and the worm wheel is coaxially fixedly connected with the lead screw; the worm is rotatably arranged in the first swing arm, and the worm is meshed with the worm wheel; the first drive can drive the worm to rotate and drive the lead screw to rotate relative to the first swing arm through the worm wheel; The manual driver comprises a hand wheel and a limiting mechanism, the hand wheel is fixedly arranged at a portion of one end of the screw rod passing through the first swing arm, and the limiting mechanism is used to limit the rotation of the screw rod; The ratchet mechanism includes a ratchet, a pawl, a second swing arm and a resetter; the ratchet is used to be coaxially fixedly connected with the rotating shaft of the feeding wheel; the second swing arm has a linkage end, a mounting end and a rotating portion, and the rotating portion is located between the linkage end and the mounting end; the rotating portion is coaxially rotatably arranged on the rotating shaft of the feeding wheel through a bearing; the linkage end is rotatably connected to one end of the connecting rod around a second axis, and the other end of the connecting rod is rotatably connected to the movable nut around a third axis, and the second axis, the third axis and the first axis are all parallel to the rotating shaft axis of the feeding wheel; the mounting end is rotatably connected with the pawl around a fourth axis, and the resetter is used to drive the pawl to rotate, and the resetter can keep the free end of the pawl in the wheel groove of the ratchet.

2. The feeding adjustment device for a cold heading machine according to claim 1, characterized in that: Both ends of the screw rod are rotatably connected to the first swing arm through bearings respectively.

3. The feeding adjustment device for a cold heading machine according to claim 1, characterized in that: The first swing arm has a first cavity and a side through-long hole connected to the first cavity; the screw rod is rotatably arranged in the first cavity, and the movable nut is threadedly connected to the screw rod corresponding to the side through-long hole; A U-shaped mounting groove is arranged at one end of the connecting rod, and connecting shafts are fixedly arranged on both sides of the movable nut, and each connecting shaft is rotatably connected to the corresponding inner wall in the U-shaped mounting groove around the third axis.

4. The feeding adjustment device for a cold heading machine according to claim 1, characterized in that: The mounting end is provided with a pawl shaft that rotates around the fourth axis; a pawl mounting seat is fixedly provided at one end of the pawl shaft close to the ratchet wheel, and the pawl is detachably fixed on the pawl mounting seat; A first support frame is fixedly arranged on the pawl rotating shaft; a second support frame is fixedly arranged on the second swing arm; the resetter is a telescopic cylinder, one end of the piston rod of the telescopic cylinder is rotatably connected to the first support frame, and one end of the cylinder body of the telescopic cylinder is rotatably connected to the second support frame.

5. The feeding adjustment device for cold heading machine according to claim 3, characterized in that: An extended side plate and a movable side plate are provided at one end of the connecting rod, the movable side plate is arranged in parallel with the extended side plate, the extended side plate and the connecting rod are integrally formed, and the movable side plate can be detachably fixed on the connecting rod, the extended side plate, the movable side plate and the corresponding ends of the connecting rod jointly form the U-shaped mounting groove; the two connecting shafts are rotatably connected to the corresponding extended side plate and the movable side plate respectively.

6. The feeding adjustment device for a cold heading machine according to claim 1, characterized in that: The swing driver comprises a driving main wheel, a first connecting pin and a push rod; The driving main wheel is used to be rotatably connected to the body of the cold heading machine and meshed with a rotating output wheel on the cold heading machine; the first connecting pin is fixedly arranged on the driving main wheel, one end of the push rod is rotatably connected to the first connecting pin around a fifth axis, and the other end of the push rod can be rotatably connected to the second end of the first swing arm around a sixth axis; the fifth axis and the sixth axis are both parallel to the first axis.

7. The feeding adjustment device for a cold heading machine according to claim 6, characterized in that: A second connecting pin is fixedly provided at the second end of the first swing arm, and the end of the push rod is rotatably connected to the second connecting pin around the sixth axis through a bearing.

8. The feeding adjustment device for a cold heading machine according to claim 4, characterized in that: The mounting end is provided with a through hole, and the pawl shaft is rotatably arranged in the through hole through a bearing; the pawl shaft passes through the through hole away from the pawl mounting seat and is fixedly connected to a limit clamp, the limit clamp has a clamping hole and a clamping gap connected to the clamping hole, a clamping hole is provided on the limit clamp at a position corresponding to the clamping gap, a bolt for adjusting the size of the clamping gap is passed through the clamping hole, and the reduction of the clamping gap can enable the clamping hole to be clamped on the corresponding end of the pawl shaft.

9. The feeding adjustment device for a cold heading machine according to claim 1, characterized in that: When the oscillating assembly includes the worm drive, the first drive is a reduction motor.

10. The feeding adjustment device for a cold heading machine according to claim 1, characterized in that: When the swing assembly includes the worm drive, the worm wheel is fixedly connected to the lead screw via a flat key.

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