A multifunctional composite cold heading machine

Abstract

The present invention discloses a multifunctional composite cold heading machine. It includes a bottom cover, a machine body fixedly connected to the bottom cover, a drive motor arranged on one side of the machine body, a transmission main shaft and a transmission auxiliary shaft coaxially and rotatably connected to the frame, an eccentric shaft eccentrically fixedly connected between the transmission main shaft and the transmission auxiliary shaft, a reciprocating cutting assembly arranged on one side of the machine body and used for cutting rods, an intermittent feeding assembly arranged on the front of the machine body and used for transporting rods, and an intermittent die assembly for longitudinally punching the cut rods. The cold heading machine of the present invention can produce semi-hollow screws while producing standard screws. One machine model achieves dual functions and is practical, greatly reducing the customer's equipment investment. In addition, this machine structure greatly reduces noise during production, improves product discharge stability and accuracy, and greatly reduces the production of defective products.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading machines, in particular to a multifunctional composite cold heading machine. Background Art

[0002] A cold heading machine is a highly efficient metal forming machine specifically designed for the mass production of fasteners such as nuts and bolts. Through the cold heading process, pressure is applied to the metal blank at room temperature, causing it to plastically deform within a die, ultimately achieving the desired shape and size. Modern cold heading machines have evolved into multi-station, multi-series models featuring high efficiency and automation, enabling continuous production. The resulting products boast high strength, excellent surface quality, and high dimensional accuracy. They are widely used in automotive parts, construction materials, hardware components, and other fields.

[0003] When a cold heading machine cold heads bar stock, the cold heading time, i.e., the time the die spends squeezing the bar stock, must be as long as possible to ensure that the dimensions of parts produced in the same batch are relatively uniform. For example, the front discharge device of a cold heading machine disclosed in the application document with publication number CN 215697700U has a transmission device that is a common cold heading machine transmission device. The transmission device comprises an input motor, a crankshaft, and a push rod rotatably connected to the crankshaft. The crankshaft rotates, driving the push rod to push the slide seat left and right, allowing the die mounted on the slide seat to punch the cut bar stock, forming the bar stock into the desired shape. However, when the bar stock is cold headed using this transmission unit, the slide stays close to the bar stock for a short time, and the bar stock is squeezed for a short time. As a result, the dimensions of parts produced in the same batch, such as bolts or nuts, can vary to a certain extent, making it difficult to control the quality of parts in the same batch.

[0004] The current cold heading machine is used to improve the problem of quality differences in the same batch of bar materials during the cold heading process. For example, a cold heading machine with application number CN202310642222.2 has the following technical features: a bed; a feeding unit installed on the bed for conveying bar materials; a cutting unit installed on the bed for cutting the bar materials conveyed by the feeding unit to the bed; a main slide and a main die box arranged relatively to each other, the main slide is slidably connected to the bed, and the main die box is fixedly connected to the bed; a transmission unit includes: a main crankshaft, which is rotatably connected to the bed and is connected to the external motor transmission; a first connecting rod, one end of which is connected to the main The eccentric part of the crankshaft is rotatably connected; the first connecting shaft is fixedly connected to the bed; the second connecting rod is arranged above the first connecting rod, and one end of the second connecting rod is rotatably connected to the first connecting shaft; the second connecting shaft, the other end of the first connecting rod is rotatably connected to the second connecting shaft, and the other end of the second connecting rod is rotatably connected to the second connecting shaft; and a pushing connecting rod, one end of the pushing connecting rod is rotatably connected to the second connecting shaft, and the other end is rotatably connected to the main slide, the pushing connecting rod is used to push the main slide to slide relative to the bed, and the main slide is used to cold head the bar material close to the main mold box; the clamping unit is installed on the bed, and is used to clamp the bar material to different workstations.

[0005] This technical solution mainly uses a motor as a power source to complete the cold heading of the bar. However, in fact, this cold heading machine has high requirements for the motor as a power source, requiring the motor to be able to bear a large load, so as to ensure that the series of structures driven by the motor can drive the cutter to cut the bar. However, in actual application, under the strength resistance of the bar, if the force provided by the motor is insufficient, the bar may not be completely cut every time, and then a large number of defective semi-finished products will appear when they finally leave the cold heading machine.

[0006] Therefore, a multifunctional composite cold heading machine is proposed to solve or alleviate the above problems. Summary of the Invention

[0007] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a multifunctional composite cold heading machine.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A multifunctional compound cold heading machine comprises a bottom cover, a machine body fixedly connected to the bottom cover, a driving motor arranged on one side of the machine body, a transmission main shaft and a transmission auxiliary shaft coaxially and rotatably connected to the frame, an eccentric shaft eccentrically fixedly connected between the transmission main shaft and the transmission auxiliary shaft, a reciprocating cutting assembly arranged on one side of the machine body for cutting bars, an intermittent feeding assembly arranged on the front of the machine body for transporting bars and an intermittent die assembly for longitudinally punching the cut bars, a ejecting assembly arranged in the machine body for pushing the falling bars and a compression assembly for compressing air, wherein the output shaft of the driving motor is fixed A driving wheel is fixedly connected to the transmission main shaft, a transmission wheel is fixedly connected to the driving wheel, the driving wheel and the transmission wheel are connected by a transmission belt, a balance wheel is fixedly connected to the transmission auxiliary shaft, the transmission main shaft is connected to the reciprocating cutting assembly by a first transmission assembly, the transmission main shaft is connected to the intermittent feeding assembly by a second transmission assembly, the intermittent feeding assembly is connected to the intermittent die assembly, the eccentric shaft is connected to the compression assembly, the compression assembly and the reciprocating cutting assembly, the compression assembly and the ejecting assembly are all connected by connecting pipes, and the connecting pipes can be turned on and off.

[0010] The cam is fixedly mounted on the support frame, and the cam is mounted on a link member which is adapted to move the cam forwardly and downwardly relative to the support frame.

[0011] Preferably, the first transmission assembly includes a driving gear fixedly connected to the outside of the transmission main shaft, a first gear shaft that penetrates the machine body, a driven gear fixedly connected to the end of the first gear shaft and meshing with the driving gear, an upper slider eccentrically connected to the end face of the driven gear, a slide frame slidably connected to the outside of the upper slider, and a pressurized cylinder fixedly connected to the slide frame, the movable end of the pressurized cylinder is fixedly connected to a rotating rod, and the end of the rotating rod away from the pressurized cylinder is rotatably connected to the slide plate.

[0012] The transmission gear of the present invention is a gear which is connected with the transmission gear of the present invention to the gear train of the transmission gear and the gear train of the transmission gear is connected with the gear train of the transmission gear to the gear train of the transmission gear.

[0013] Preferably, the front side of the body is fixedly connected to a connecting platform located on one side of the mounting seat, and the intermittent die assembly includes a push rod that longitudinally penetrates the body to its interior, a striker that longitudinally penetrates the connecting platform and is coaxially arranged with the push rod, a connecting shaft rotatably connected between the connecting platform and the mounting seat, a swing arm rotatably connected to the outside of the connecting shaft, and a cam that is intermittently coaxially connected to the connecting spring and the guide block that are fixedly connected to the lower end of the swing arm and the front side of the body, a top seat for the push rod to pass through is provided in the body, a receiving groove between the connecting spring and the connecting shaft is provided on the swing arm, a receiving wheel is rotatably connected in the receiving groove, and the outer ring of the receiving wheel can be arranged to abut against the outer ring of the cam, a vertical groove is provided on the bottom surface of the connecting platform, a groove is provided on the bottom surface of the striker, and the upper end of the swing arm extends into the groove.

[0014] Preferably, the lifting assembly includes an inclined and hollow shaft frame, a lower slider slidably connected to the shaft frame, an elastic cylinder fixedly connected to the lower end of the shaft frame, a connecting rod fixedly connecting the movable end of the elastic cylinder and the lower slider, and a transmission rocker arm rotatably connected to the lower slider through a rotating shaft. The upper end of the shaft frame is fixedly connected to one side of the machine body, and the side of the frame away from the shaft frame is fixedly connected to two longitudinally arranged return springs, and the ends of the two groups of return springs are commonly fixedly connected to a connecting seat, and the connecting seat and the swing arm are rotatably connected to an articulated arm, and a transverse axis is fixedly connected between the two articulated arms, and a fixed seat is fixedly connected to the machine body, and two longitudinally arranged push plates are slidably connected in the fixed seat, and the two articulated arms are rotatably connected to the two push plates respectively.

[0015] Preferably, the compression assembly includes an eccentric rocker arm rotatably connected to the outside of the eccentric shaft, a piston rotatably connected to the end of the eccentric rocker arm away from the eccentric shaft, a main connecting tube, an auxiliary connecting tube connected to the main connecting tube, an exhaust pipe connected to the main connecting tube, a pressure sensor fixedly connected to the top surface of the body, and a vertical rod. A longitudinally arranged horizontal cylinder body, a vertical cylinder body connected to the horizontal cylinder body, and a support cylinder body located below the pressure sensor are provided in the body. A one-way valve connected to the horizontal cylinder body is fixedly connected to the body, the vertical rod is slidably connected in the support cylinder body, and the upper end of the vertical rod is arranged to conflict with the probe of the pressure sensor, the auxiliary connecting pipe is connected to the lower end of the straight cylinder body, the main connecting tube is connected to the lower end of the vertical cylinder body, and the exhaust pipe is connected to the reciprocating cutting assembly and the top material assembly through a connecting pipeline.

[0016] Preferably, the connecting pipeline includes a horizontal air valve arranged on the back of the machine body, and a first side air valve and a second side air valve arranged on both sides of the machine body, the air outlet pipe is connected to the horizontal air valve through the first connecting air pipe, and the horizontal air valve is connected to the first side air valve and the second side air valve respectively through a plurality of second connecting air pipes, a plurality of lower air holes connected to the interior of the bottom cover are provided on the side wall of the bottom cover, an upper air hole connected to the interior of the bottom cover is provided on the side wall of the machine body, an air seat located above the top material assembly is fixedly connected to the machine body, and a hole facing the machine body is provided on the air seat An air injection slot is arranged on the front side of the body, the first side air valve is connected with the air seat through a third connecting air pipe running through the upper air hole, the first side air valve is connected with a plurality of lower air holes through a plurality of fourth connecting air pipes, the second side air valve is connected with the elastic cylinder through a fifth connecting air pipe, and the second side air valve is connected with the pressurized cylinder through a sixth connecting air pipe, the lateral air valve, the first side air valve, and the second side air valve are all electrically controlled valves, the pressure sensor is coupled with a controller, and the controller is coupled with the lateral air valve, the first side air valve, and the second side air valve.

[0017] The second gear is connected with the driving member by the second end of the gear shift shaft to the third gear shift end, and the transmission gear is connected with the transmission gear of the present invention on the base.

[0018] Preferably, an inclined guide plate is fixedly connected inside the bottom cover, and open grooves are provided on the front and back of the bottom cover. An inclined receiving hopper is fixedly connected to the bottom cover at the front opening groove, and chip removal grooves are provided in the thickness direction of the guide plate and the thickness direction of the receiving hopper.

[0019] The present invention has the following beneficial effects:

[0020] In the present invention, the main transmission shaft and auxiliary transmission shaft drive the eccentric shaft to rotate, and the eccentric rocker arm causes the piston to reciprocate within the cylinder. Air enters the cylinder through a one-way valve and is compressed. The vertical rod is lifted up within the support cylinder, pressing against the pressure sensor. When the pressure reaches the standard, the controller opens the air valve to exhaust. In this way, the cold heading machine can produce qualified semi-finished bars, avoiding incomplete cutting. In addition, this cold heading machine can produce semi-hollow screws while producing standard screws. This dual-functional model greatly reduces customers' equipment investment. This machine structure greatly reduces noise during production and improves product discharge stability and precision, greatly reducing the production of defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention after removing the base frame and outer cover Figure 1 ;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic diagram of the structure of the present invention after removing the base frame and outer cover Figure 2 ;

[0026] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of the present invention after removing the base frame and outer cover Figure 3 ;

[0028] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0029] Figure 8 This is a schematic diagram of the structure of the present invention after removing the base frame and outer cover Figure 4 ;

[0030] Figure 9 This is a schematic diagram of the structure of the present invention after removing the base frame and outer cover Figure 5 ;

[0031] Figure 10 for Figure 9 Enlarged view of point D in the middle;

[0032] Figure 11 This is a schematic diagram of the structure of the present invention after removing the base frame and outer cover Figure 6 ;

[0033] Figure 12 This is a cross-sectional view of the present invention after removing the chassis and outer cover;

[0034] Figure 13 for Figure 12 Enlarged view of point E in the middle;

[0035] Figure 14 for Figure 12 Enlarged view of point F in the middle;

[0036] Figure 15 It is a structural schematic diagram of the reciprocating cutting assembly in the present invention.

[0037] 1. Base frame; 2. Outer cover; 3. Bottom cover; 4. Horizontal seat; 5. Vertical guide roller; 6. Vertical seat; 7. Horizontal guide roller; 8. Connecting platform; 9. Machine body; 10. Mounting seat; 11. Wheel cover; 12. Movable wheel; 13. Steering wheel; 14. Driving motor; 15. Transmission belt; 16. Transmission wheel; 17. Transmission main shaft; 18. Driving gear; 19. Eccentric shaft; 20. Transmission auxiliary shaft; 21. Balancing wheel; 22. Driven gear; 23. Upper slide; 24. Slide frame; 25. Pressurized cylinder; 2 6. Rotating rod; 27. Slide plate; 28. Offset groove; 29. ​​Slide seat; 30. Guide rod; 31. Side arm; 32. Cross bar; 33. Cutter; 34. Guide connecting block; 35. Guide column; 36. Top shaft; 37. Cutter seat; 38. Limit cover; 39. Shaft frame; 40. Elastic cylinder; 41. Connecting rod; 42. Lower slide block; 43. Rotating shaft; 44. Transmission rocker; 45. Cross shaft; 46. Articulated arm; 47. Fixed seat; 48. Push plate; 49. Return spring; 50. Connecting seat; 51. 1st gear shaft; 52, first bevel gear; 53, second bevel gear; 54, second gear shaft; 55, third bevel gear; 56, fourth bevel gear; 57, third gear shaft; 58, cam; 59, first end face gear; 60, second end face gear; 61, striker; 62, swing arm; 63, connecting shaft; 64, receiving groove; 65, receiving wheel; 66, connecting spring; 67, ejector rod; 68, ejector seat; 69, fourth gear shaft; 70, guide block; 71, arc arm; 72, hook; 73, belt Drive gear; 74. Main guide gear; 75. Slave guide gear; 76. Eccentric rocker arm; 77. Piston; 78. Horizontal cylinder body; 79. Vertical cylinder body; 80. Support cylinder body; 81. Vertical rod; 82. Pressure sensor; 83. Main connecting tube; 84. Auxiliary connecting tube; 85. Exhaust pipe; 86. Air seat; 87. Injection groove; 88. Upper air hole; 89. First side air valve; 90. Lower air hole; 91. Second side air valve; 92. Horizontal air valve; 93. Guide plate; 94. Receiver; 95. Chip discharge groove. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] 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 invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when in use, or are the orientation or position relationship commonly understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] A multifunctional compound cold heading machine, such as Figures 1-15As shown, it includes a base frame 1, a bottom cover 3 fixedly connected to the base frame 1, a body 9 fixedly connected to the bottom cover 3, an outer cover 2 fixedly connected to the base frame 1 and sleeved on the outside of the body 9, a drive motor 14 arranged on one side of the body 9, a transmission main shaft 17 and a transmission auxiliary shaft 20 coaxially and rotatably connected to the frame, an eccentric shaft 19 eccentrically fixedly connected between the transmission main shaft 17 and the transmission auxiliary shaft 20, a reciprocating cutting assembly arranged on one side of the body 9 and used for cutting rods, an intermittent feeding assembly arranged on the front of the body 9 and used for transporting rods and an intermittent die assembly for longitudinally punching the cut rods, and a ejecting assembly arranged in the body 9 and used for pushing the dropped rods. Parts and a compression assembly for compressing air, the output shaft of the drive motor 14 is fixedly connected to the driving wheel, the transmission main shaft 17 is fixedly connected to the transmission wheel 16, the driving wheel and the transmission wheel 16 are connected by a transmission belt 15, the transmission auxiliary shaft 20 is fixedly connected to the balance wheel 21, the transmission main shaft 17 is connected to the reciprocating cutting assembly through the first transmission assembly, the transmission main shaft 17 is connected to the intermittent feeding assembly through the second transmission assembly, the intermittent feeding assembly is connected to the intermittent die assembly, the eccentric shaft 19 is connected to the compression assembly, the compression assembly and the reciprocating cutting assembly, the compression assembly and the ejection assembly are all connected through connecting pipes, and the connecting pipes can be set to be on and off.

[0045] like Figure 8 、 Figure 10 、 Figure 15 As shown, the reciprocating cutting assembly includes a slide 29 with a C-shaped cross section and fixedly connected to one side of the body 9, a slide 27 slidably connected to the slide 29, a side arm 31 fixedly connected to one side of the slide 29 through a guide rod 30, a cross bar 32 fixedly connected to the top of the side arm 31 and located above the body 9, a cutter 33 fixedly connected to the end of the cross bar 32 away from the side arm 31, a top shaft 36 slidably connected to the outside of the guide rod 30 and passing through the body 9 to the inside thereof, a top shaft 36 fixedly connected to the end of the top shaft 36 away from the guide rod 30 and located at the knife seat 37, and a cutter 33 provided on the slide. A movable through groove is provided on the top surface of the seat 29 and has the same length direction as the guide rod 30, a guide connecting block 34 is slidably connected in the movable through groove and on the outside of the guide rod 30, and a cylindrical guide column 35 is fixedly connected to the bottom surface of the guide connecting block 34. The top shaft 36 passes through the slide 29 and is fixedly connected to the guide connecting block 34. A Z-shaped offset groove 28 is provided on the top surface of the slide 27. The guide column 35 is slidably connected in the offset groove 28. The end of the slide 29 away from the slide 27 is fixedly connected to a limit cover 38 that can be sleeved on the outside of the slide 27.

[0046] The first transmission assembly includes a driving gear 18 fixedly connected to the outside of the transmission main shaft 17, a first gear shaft 51 that passes through the body 9, a driven gear 22 fixedly connected to the end of the first gear shaft 51 and meshing with the driving gear 18, an upper slider 23 eccentrically connected to the end face of the driven gear 22, a slide frame 24 slidably connected to the outside of the upper slider 23, and a pressurizing cylinder 25 fixedly connected to the slide frame 24, the movable end of the pressurizing cylinder 25 is fixedly connected to a rotating rod 26, and the end of the rotating rod 26 away from the pressurizing cylinder 25 is rotatably connected to the slide plate 27.

[0047] like Figure 3 、 Figure 7 and Figure 13 As shown, the front of the machine body 9 is fixedly connected to a mounting base 10, and the intermittent feeding assembly includes a guide block 70 rotatably arranged on the mounting base 10, an arc-shaped arm 71, a main guide gear 74 rotatably arranged on the mounting base 10, a driving gear 73 coaxially fixedly connected to the main guide gear 74, a rotating base coaxial with the driving gear 73 and rotating relative to the driving gear 73 and in the shape of an elongated strip, a hook 72 rotatably connected to one end of the rotating base, and a slave guide gear 75 rotatably connected to the mounting base 10 and meshing with the main guide gear 74. A long sliding groove is provided on the guide block 70, and the arc-shaped arm 71 The lower end is fixedly connected to a smooth column slidably connected to the sliding groove, the upper end of the arc arm 71 is rotatably connected to the end of the swivel seat away from the hook claw 72, the hook claw 72 is engaged with the teeth of the driving gear 73, and a movable wheel 12 is provided on the side of the mounting seat 10 away from the main guide gear 74. The main guide gear 74 is coaxially connected to the movable wheel 12, and a directional wheel 13 located below the movable wheel 12 is coaxially connected from the guide gear 75. There is a channel between the movable wheel 12 and the directional wheel 13 for the passage of rods, and a wheel cover 11 located above the movable wheel 12 is fixedly connected to the side wall of the mounting seat 10.

[0048] like Figure 5 and Figure 13 As shown, the front of the machine body 9 is fixedly connected to a connecting platform 8 located on one side of the mounting seat 10, and the intermittent die assembly includes a push rod 67 that penetrates the machine body 9 longitudinally to the interior thereof, a striker 61 that penetrates the connecting platform 8 longitudinally and is coaxially arranged with the push rod 67, a connecting shaft 63 rotatably connected between the connecting platform 8 and the mounting seat 10, a swing arm 62 rotatably connected to the outside of the connecting shaft 63, and a cam 58 that is intermittently coaxially connected to the connecting spring 66 and the guide block 70 that are fixedly connected to the lower end of the swing arm 62 and the front of the machine body 9. A top seat 68 for the push rod 67 to pass through is provided in the machine body 9, and a receiving groove 64 is provided on the swing arm 62 between the connecting spring 66 and the connecting shaft 63. A receiving wheel 65 is rotatably connected in the receiving groove 64, and the outer ring of the receiving wheel 65 can be arranged to abut against the outer ring of the cam 58. A vertical groove is provided on the bottom surface of the connecting platform 8, a groove is provided on the bottom surface of the striker 61, and the upper end of the swing arm 62 extends into the groove.

[0049] like Figure 2 、 Figure 6 、 Figure 7 As shown, the ejecting assembly includes an inclined and hollow shaft frame 39, a lower slider 42 slidably connected to the shaft frame 39, an elastic cylinder 40 fixedly connected to the lower end of the shaft frame 39, a connecting rod 41 fixedly connecting the movable end of the elastic cylinder 40 and the lower slider 42, and a transmission rocker arm 44 rotatably connected to the lower slider 42 through a rotating shaft 43. The upper end of the shaft frame 39 is fixedly connected to one side of the machine body 9, and the side of the machine frame away from the shaft frame 39 is fixedly connected to two longitudinally arranged return springs 49. The ends of the two groups of return springs 49 are commonly fixedly connected to a connecting seat 50. The connecting seat 50 and the rocker arm 62 are rotatably connected to an articulated arm 46. A horizontal axis 45 is fixedly connected between the two articulated arms 46. A fixed seat 47 is fixedly connected to the machine body 9. Two longitudinally arranged push plates 48 are slidably connected in the fixed seat 47. The two articulated arms 46 are rotatably connected to the two push plates 48 respectively.

[0050] like Figure 11 、 Figure 12 、 Figure 14 As shown, the compression assembly includes an eccentric rocker arm 76 rotatably connected to the outside of the eccentric shaft 19, a piston 77 rotatably connected to the end of the eccentric rocker arm 76 away from the eccentric shaft 19, a main connecting tube 83, an auxiliary connecting tube 84 connected to the main connecting tube 83, an exhaust pipe 85 connected to the main connecting tube 83, a pressure sensor 82 fixedly connected to the top surface of the body 9, and a vertical rod 81. A longitudinally arranged horizontal cylinder body 78, a vertical cylinder body 79 connected to the horizontal cylinder body 78, and a support cylinder body 80 located below the pressure sensor 82 are provided in the body 9. A one-way valve connected to the horizontal cylinder body 78 is fixedly connected to the body 9. The vertical rod 81 is slidably connected in the support cylinder body 80, and the upper end of the vertical rod 81 is arranged to abut against the probe of the pressure sensor 82. The auxiliary connecting tube 84 is connected to the lower end of the straight cylinder body, the main connecting tube 83 is connected to the lower end of the vertical cylinder body 79, and the exhaust pipe 85 is connected to the reciprocating cutting assembly and the top material assembly through a connecting pipeline.

[0051] like Figure 2 、 Figure 4 、 Figure 7-11As shown, the connecting pipeline includes a transverse air valve 92 arranged on the back of the body 9, and a first side air valve 89 and a second side air valve 91 arranged on both sides of the body 9. The outlet pipe 85 is connected to the transverse air valve 92 through the first connecting air pipe, and the transverse air valve 92 is connected to the first side air valve 89 and the second side air valve 91 through a plurality of second connecting air pipes. A plurality of lower air holes 90 connected to the interior thereof are provided on the side wall of the bottom cover 3, and an upper air hole 88 connected to the interior thereof is provided on the side wall of the body 9. An air seat 86 located above the top material assembly is fixedly connected to the body 9, and a gas seat 86 is provided with a gas seat facing the front of the body 9. An air injection groove 87 is arranged on the surface, the first side air valve 89 is connected to the air seat 86 through a third connecting air pipe running through the upper air hole 88, the first side air valve 89 is connected to a plurality of lower air holes 90 through a plurality of fourth connecting air pipes, the second side air valve 91 is connected to the elastic cylinder 40 through a fifth connecting air pipe, and the second side air valve 91 is connected to the pressurized cylinder 25 through a sixth connecting air pipe. The lateral air valve 92, the first side air valve 89, and the second side air valve 91 are all electrically controlled valves, and the pressure sensor 82 is coupled to a controller, and the controller is coupled to the lateral air valve 92, the first side air valve 89, and the second side air valve 91.

[0052] like Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 、 Figure 9 、 Figure 11 and Figure 13 As shown, the second transmission assembly includes a first bevel gear 52 fixedly connected to the first gear shaft 51 away from one end of the driven gear 22, a second bevel gear 53 meshing with the first bevel gear 52, a third bevel gear 55 coaxially fixedly connected to the second bevel gear 53 through a second gear shaft 54, a fourth bevel gear 56 meshing with the third bevel gear 55, a third gear shaft 57 passing through the connecting platform 8, and a fourth gear shaft 69 passing through the mounting base 10 and coaxially connected to the third gear shaft 57. A rotating base is fixedly connected to one side of the body 9, and the second gear shaft 54 ​​is rotatably connected in the rotating base. The cam 58 is fixedly connected to the third gear shaft 57, and the third gear shaft 57 and the fourth gear shaft 69 are coaxially fixedly connected with the first end face tooth 59 and the second end face tooth 60 at one end facing each other. The tooth cross-section of the first end face tooth 59 and the second end face tooth 60 is a right triangle, and the first end face tooth 59 and the second end face tooth 60 can be meshed and connected. The fourth gear shaft 69 is fixedly connected to the guide block 70, and a torsion spring is provided on the outer side of the fourth gear shaft 69. One end of the torsion spring is fixedly connected to the body 9, and the other end of the torsion spring is fixedly connected to the guide block 70, so that the guide block 70 can rotate.

[0053] An inclined guide plate 93 is fixedly connected inside the bottom cover 3, and open grooves are provided on the front and back of the bottom cover 3. An inclined receiving hopper 94 is fixedly connected to the bottom cover 3 located at the front opening groove, and chip removal grooves 95 are provided in the thickness direction of the guide plate 93 and the thickness direction of the receiving hopper 94. The side of the mounting seat 10 away from the machine body 9 is fixedly connected to the vertical seat 6, and a number of horizontal guide rollers 7 are rotatably connected to the side of the vertical seat 6. The side of the vertical seat 6 away from the mounting seat 10 is fixedly connected to the horizontal seat 4, and a number of vertical guide rollers 5 are rotatably connected to the horizontal seat 4.

[0054] When the present invention is actually working, the operator straightens the bar through the guidance of the vertical guide roller and the horizontal guide roller 7, and then enters between the movable wheel 12 and the directional wheel 13. During this process, the driving motor 14 is used as the power source to drive the driving wheel and the transmission belt 15 on its output shaft to drive the transmission wheel 16 to rotate. When the transmission wheel 16 rotates, the driving gear 18 and the transmission main shaft 17 are driven to rotate. The transmission main shaft 17 drives the eccentric wheel and the transmission auxiliary shaft 20 to rotate. When the transmission auxiliary shaft 20 rotates, it drives the balance wheel 21 to rotate. In this way, the transmission main shaft 17 and the transmission auxiliary shaft 20 on both sides of the frame can maintain a relatively balanced state, so that the transmission wheel 16 is not prone to shaking when it rotates.

[0055] When the driving gear 18 rotates, it will also drive the driven gear 22 to rotate. The driven gear 22 will drive the first gear shaft 51 to drive the first bevel gear 52 to rotate. The first bevel gear 52 will then drive the second bevel gear 53 meshing with it to rotate. Then the second bevel gear 53 is driven by the second gear shaft 54, so that the third bevel gear 55 drives the fourth bevel gear 56 to rotate. When the fourth bevel gear 56 rotates, it will drive the third gear shaft 57 to rotate. The third gear shaft 57 drives the fourth gear shaft 69 to rotate intermittently through the first end face teeth 59 and the second end face teeth 60. When the fourth gear shaft 69 rotates, it will drive the guide block 70 to rotate, thereby allowing the arc arm 71 to drive the swivel seat to rotate clockwise. When the swivel seat rotates clockwise, it will drive the hook 72 to push the driving gear 73 to deflect by a certain angle. In this way, the main guide gear 74 will also deflect by the same angle, and the slave guide gear 75 meshing with it will rotate counterclockwise, so that the movable wheel 12 and the directional wheel 13 on the mounting frame can drive the bar to intermittent displacement;

[0056] The rod then enters the machine body 9. Under the rotation of the driven gear 22, the upper slider 23 rotating eccentrically thereon will also rotate and slide in the slide frame 24, thereby forming a crank connecting rod 41 structure, thereby enabling the pressurized cylinder 25 and the rotating rod 26 to push the slide plate 27 to slide in the slide seat 29. At the same time, due to the shape of the offset groove 28 on the slide plate 27, the guide column 35 can drive the guide connecting block 34 to move back and forth, and the guide connecting block 34 can be guided by the guide rod 30 during the displacement process, which has better stability. In this way, the cutter 33 will not move, but the knife seat 37 will move together with the top shaft 36 and the guide connecting block 34, so that the knife seat 37 and the cutter 33 cooperate to complete the cutting of the rod. At this time, the rod will be pushed forward by the knife seat 37, so that the cut rod is kept offset with the subsequent rod to be processed. At this time, the cut rod is located on the end face of the top seat 68.

[0057] At the same time, due to the rotation of the third gear shaft 57, the cam 58 can squeeze the receiving wheel 65 on the swing arm 62, so that the swing arm 62 can swing once through the connecting shaft 63, and then the upper end of the swing arm 62 can drive the striker 61, so that the striker 61 hits the top rod 67, so that the top rod 67 penetrates the body 9 and the top seat 68, squeezes the cut rod, and can be inserted into the rod, so that its shape is corrected and becomes the original shape of the semi-hollow screw;

[0058] During the whole process, the transmission main shaft 17 and the transmission auxiliary shaft 20 will drive the eccentric shaft 19 to rotate, and the eccentric shaft 19 will drive the piston 77 to move back and forth in the horizontal cylinder body 78 through the eccentric rocker arm 76. The air enters the horizontal cylinder body 78, the vertical cylinder body 79, and the support cylinder body 80 through the one-way valve. As the piston 77 continues to operate, the air therein is compressed, so that the vertical rod 81 is pushed upward in the support cylinder body 80 and presses against the pressure sensor 82, so that the pressure sensor 82 detects that the pressure increases. When the pressure reaches a certain value, the controller can control the horizontal air valve 92, the first side air valve 89, and the second side air valve 91 to partially or fully open, thereby exhausting the air and making the compressed air available for use. The compressed air enters the pressurizing cylinder 25, which can instantly increase the force applied by the reciprocating cutting assembly to the rod. The rod can be cut cleanly and neatly, thereby ensuring the quality of the semi-finished product. In addition, compressed air can also enter the elastic cylinder 40, so that the elastic cylinder 40 pushes the lower slider 42 to move in the shaft frame 39, so that the rotating shaft 43 on the lower slider 42 drives the transmission rocker arm 44 to deflect, and then the transmission rocker arm 44 can pull the hinge arm 46 to deflect. In this way, the push plate 48 rotatably connected to the hinge arm 46 can be displaced in the fixed seat 47, so that the push plate 48 can push the falling rod forward, so that the rod can fall into the receiving hopper 94 for recovery. In addition, the pressurized air can also be ejected through the jet slot 87 on the air seat 86, and can also be ejected through the lower air hole 90, so that the debris can be separated from the rod through the chip discharge groove 95, and the cut part of the rod can be kept as clean as possible to avoid the problem of debris jamming.

[0059] As a result, the cold heading machine can produce semi-finished bars with qualified quality without incomplete cutting.

[0060] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A multifunctional compound cold heading machine, characterized in that: The machine body comprises a bottom cover, a machine body fixedly connected to the bottom cover, a driving motor arranged on one side of the machine body, a transmission main shaft and a transmission auxiliary shaft coaxially and rotatably connected to the frame, an eccentric shaft eccentrically fixedly connected between the transmission main shaft and the transmission auxiliary shaft, a reciprocating cutting assembly arranged on one side of the machine body for cutting rods, an intermittent feeding assembly arranged on the front of the machine body for transporting rods and an intermittent die assembly for longitudinally punching the cut rods, a top material assembly arranged in the machine body for pushing the dropped rods and a compression assembly for compressing air, the output shaft of the driving motor is fixedly connected to an active The transmission main shaft is fixedly connected to a transmission wheel, the driving wheel and the transmission wheel are connected by a transmission belt, the transmission auxiliary shaft is fixedly connected to a balance wheel, the transmission main shaft is connected to the reciprocating cutting assembly by a first transmission assembly, the transmission main shaft is connected to the intermittent feeding assembly by a second transmission assembly, the intermittent feeding assembly is connected to the intermittent die assembly, the eccentric shaft is connected to the compression assembly, the compression assembly and the reciprocating cutting assembly, the compression assembly and the ejecting assembly are connected by connecting pipes, and the connecting pipes can be opened and closed; The reciprocating cutting assembly includes a slide fixedly connected to one side of the machine body and a slide plate slidably connected to the slide; The first transmission assembly includes a pressurizing cylinder, a movable end of the pressurizing cylinder is fixedly connected to a rotating rod, and an end of the rotating rod away from the pressurizing cylinder is rotatably connected to the slide; The compression assembly includes an eccentric rocker arm rotatably connected to the outside of the eccentric shaft, a piston rotatably connected to the end of the eccentric rocker arm away from the eccentric shaft, and a vertical rod. A longitudinally arranged horizontal cylinder body, a vertical cylinder body connected to the horizontal cylinder body, and a supporting cylinder body are provided in the machine body. A one-way valve connected to the horizontal cylinder body is fixedly connected to the machine body, and the vertical rod is slidably connected to the supporting cylinder body. The connecting pipeline includes a first side air valve and a second side air valve arranged on both sides of the machine body, and the second side air valve is connected to the pressurized air cylinder through a sixth connecting air pipe.

2. A multifunctional compound cold heading machine according to claim 1, characterized in that: The cross-section of the slide is C-shaped, and the reciprocating cutting assembly also includes a side arm fixedly connected to one side of the slide by a guide rod, a cross bar fixedly connected to the top of the side arm and located above the machine body, a cutting knife fixedly connected to the cross bar away from one end of the side arm, a top shaft slidably connected to the outside of the guide rod and passing through the machine body to its interior, a top shaft fixedly connected to one end of the top shaft away from the guide rod and located at the knife seat, a movable through groove opened on the top surface of the slide and with the same length direction as the guide rod, a guide connecting block slidably connected in the movable through groove and outside the guide rod, and a guide column fixedly connected to the bottom surface of the guide connecting block and in a cylindrical shape, the top shaft passes through the slide and the top shaft is fixedly connected to the guide connecting block, the top surface of the slide is provided with a Z-shaped dislocation groove, the guide column is slidably connected in the dislocation groove, and the slide is fixedly connected at one end away from the slide with a limit cover that can be sleeved on the outside of the slide.

3. The multifunctional compound cold heading machine according to claim 2, characterized in that: The first transmission assembly also includes a driving gear fixedly connected to the outside of the transmission main shaft, a first gear shaft that penetrates the body, a driven gear fixedly connected to the end of the first gear shaft and meshing with the driving gear, an upper slider eccentrically connected to the end face of the driven gear, and a slide frame slidably connected to the outside of the upper slider, and the pressurizing cylinder is fixedly connected to the slide frame.

4. The multifunctional compound cold heading machine according to claim 3, characterized in that: The front side of the machine body is fixedly connected to the mounting base, and the intermittent feeding assembly includes a guide block rotatably arranged on the mounting base, an arc arm, a main guide gear rotatably arranged on the mounting base, a driving gear coaxially connected to the main guide gear, a swivel seat that is coaxial with the driving gear and rotates relative to the driving gear and is elongated, a hook claw rotatably connected to one end of the swivel seat, and a slave guide gear rotatably connected to the mounting base and meshed with the main guide gear. The guide block is provided with an elongated sliding groove, the lower end of the arc arm is fixedly connected to a smooth column slidably connected in the sliding groove, the upper end of the arc arm is rotatably connected to the end of the swivel seat away from the hook claw, the hook claw is meshed with the teeth of the driving gear, and a movable wheel is provided on the side of the mounting base away from the main guide gear, the main guide gear is coaxially transmitted with the movable wheel, and the slave guide gear is coaxially transmitted and connected to a directional wheel located below the movable wheel, and a channel for rods to pass between the movable wheel and the directional wheel is provided, and a wheel cover located above the movable wheel is fixedly connected to the side wall of the mounting base.

5. The multifunctional compound cold heading machine according to claim 4, characterized in that: The front side of the body is fixedly connected to a connecting platform located on one side of the mounting seat, and the intermittent die assembly includes a push rod that penetrates the body longitudinally to its interior, a striker that penetrates the connecting platform longitudinally and is coaxially arranged with the push rod, a connecting shaft rotatably connected between the connecting platform and the mounting seat, a swing arm rotatably connected to the outside of the connecting shaft, and a cam that is intermittently coaxially connected to the connecting spring and the guide block that are fixedly connected to the lower end of the swing arm and the front side of the body, a top seat for the push rod to pass through is provided in the body, a receiving groove between the connecting spring and the connecting shaft is provided on the swing arm, a receiving wheel is rotatably connected in the receiving groove, and the outer ring of the receiving wheel can be arranged to abut against the outer ring of the cam, a vertical groove is provided on the bottom surface of the connecting platform, a groove is provided on the bottom surface of the striker, and the upper end of the swing arm extends into the groove.

6. The multifunctional compound cold heading machine according to claim 5, characterized in that: The lifting assembly includes an inclined and hollow shaft frame, a lower slider slidably connected to the shaft frame, an elastic cylinder fixedly connected to the lower end of the shaft frame, a connecting rod fixedly connecting the movable end of the elastic cylinder and the lower slider, and a transmission rocker arm rotatably connected to the lower slider through a rotating shaft. The upper end of the shaft frame is fixedly connected to one side of the machine body, and the side of the frame away from the shaft frame is fixedly connected to two groups of longitudinally arranged return springs, the ends of the two groups of return springs are commonly fixedly connected to a connecting seat, and the connecting seat and the swing arm are rotatably connected to an articulated arm, and a transverse axis is fixedly connected between the two articulated arms, and a fixed seat is fixedly connected to the machine body, and two longitudinally arranged push plates are slidably connected to the fixed seat, and the two articulated arms are rotatably connected to the two push plates respectively.

7. The multifunctional compound cold heading machine according to claim 1, characterized in that: The compression assembly also includes a main connecting cylinder, an auxiliary connecting pipe connected to the main connecting cylinder, an air outlet pipe connected to the main connecting cylinder, and a pressure sensor fixedly connected to the top surface of the body. The support cylinder body is located below the pressure sensor, and the upper end of the vertical rod is arranged to abut against the probe of the pressure sensor. The auxiliary connecting pipe is connected to the lower end of the support cylinder body, the main connecting cylinder is connected to the lower end of the vertical cylinder body, and the air outlet pipe is connected to the reciprocating cutting assembly and the lifting assembly through a connecting pipeline.

8. The multifunctional compound cold heading machine according to claim 7, characterized in that: The air filter presses on the cam face, and the air filter presses on the cam face, and the air filter presses on the cam face.

9. The multifunctional compound cold heading machine according to claim 6, characterized in that: The second gear shaft is fixedly connected to the first gear shaft away from one end of the driven gear, the second gear shaft is meshed with the first gear, the third gear shaft is coaxially fixedly connected to the second gear shaft through the second gear shaft, the fourth gear shaft is meshed with the third gear, the third gear shaft is fixedly connected to the guide block.

10. The multifunctional compound cold heading machine according to claim 1, characterized in that: A tilted guide plate is fixedly connected inside the bottom cover, and open grooves are provided on the front and back of the bottom cover. A tilted receiving hopper is fixedly connected to the bottom cover at the front opening groove, and chip removal grooves are provided in the thickness direction of the guide plate and the thickness direction of the receiving hopper.

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