Cold heading machine rear outlet mechanism

Abstract

The present invention relates to the technical field of cold heading machines, and in particular to a rear outlet mechanism of a cold heading machine, comprising a rear strike seat and a front strike seat, wherein a rear strike die is fixedly mounted on the inner wall of the rear strike seat, and a front strike die is fixedly mounted on the inner wall of the front strike seat, and further comprising a circular ring, wherein a sealing ring is fixedly mounted on the outer wall of the circular ring for cleaning oil mixed with particles on the inner wall of the rear strike seat; a cylinder, wherein a guide tube is elastically mounted on the inner wall of the cylinder, and a touch ball is fixedly mounted at the front end of the guide tube for transporting oil sucked by a corner tube into the inner cavity of the cylinder through the guide tube. Through the mutual cooperation of the circular ring, the sealing ring, the corner tube, the cylinder, the guide tube, the touch ball and the rubber tube, the oil mixed with particles on the inner wall of the rear strike seat can be cleaned, thereby avoiding the generation of fine marks on the surface of the part and the inner wall of the rear strike seat during the stamping process; and the setting of the compensation mechanism can recycle the oil, thereby making secondary use of the oil.

Description

Technical Field

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

[0002] The working principle of a cold heading machine is a casting method that thickens the top of a bar or wire at room temperature. Cold heading is primarily used to manufacture parts such as bolts, nuts, nails, rivets, and steel balls. Forging materials can include copper, aluminum, carbon steel, alloy steel, stainless steel, and titanium alloys. Cold heading is often performed on dedicated cold heading machines, facilitating continuous, multi-station, and automated production. Cold heading machines can sequentially complete processes such as cutting, heading, accumulation, forming, chamfering, thread rolling, diameter reduction, and trimming.

[0003] During the stamping process of the parts by the cold heading machine, the inner wall of the back seat on the cold heading machine will rub against the outer wall of the parts. At the same time, since the parts will be exposed to the outside world for a long time during the processing, particles may be attached to the surface of the parts. Therefore, when the inner wall of the back seat rubs against the outer wall of the parts, the particles attached to its surface may be stuck to the inner wall of the back seat, which may cause fine marks on the surface of the parts and the inner wall of the back seat during the stamping process, thereby affecting the product quality. Summary of the Invention

[0004] In response to the above-mentioned shortcomings of the prior art, the present invention provides a rear outlet mechanism for a cold heading machine, which can effectively solve the problem in the prior art that when the inner wall of the rear head rubs against the outer wall of the part, the particles attached to its surface may be adhered to the inner wall of the rear head, thereby causing fine marks on the part surface and the inner wall of the rear head during the stamping process, thereby affecting product quality.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a rear outlet mechanism of a cold heading machine, comprising a rear beat seat and a front beat seat, wherein a rear seat die is fixedly mounted on the inner wall of the rear beat seat, and a rear ejector rod is elastically arranged on the inner wall of the rear seat die, a front seat die is fixedly mounted on the inner wall of the front beat seat, and a front ejector rod is elastically arranged on the inner wall of the front seat die, a part body is arranged between the front ejector rod and the rear ejector rod, and further comprising:

[0007] A circular ring is provided inside the rear seat, and a sealing ring is fixedly provided on the outer wall of the circular ring for cleaning the oil mixed with particulate matter on the inner wall of the rear seat. Corner tubes are fixedly installed in an annular shape at equal intervals inside the circular ring for absorbing the oil accumulated at the corners;

[0008] The cylinder is arranged in a ring shape at equal intervals inside the rear push rod, and a guide tube is elastically provided on the inner wall of the cylinder. A touch ball is fixedly provided at the front end of the guide tube to transport the oil sucked by the corner tube to the inner cavity of the cylinder through the guide tube.

[0009] Furthermore, a right-angle hole is opened inside the cylinder to limit the cylinder, and a limiting shaft is set on the inner wall of the right-angle hole. A torsion spring is wound on the outer wall of the limiting shaft to provide traction to the cylinder, and the cylinder is rotatably connected to the rear push rod through the limiting shaft.

[0010] Furthermore, the limiting shaft is fixedly connected to the rear push rod, the cross section of the limiting shaft is semicircular, and the slope is upward. When the cylinder rotates around the limiting shaft, the limiting shaft and the right-angle hole cooperate with each other, so that the cylinder rotates at a 90° right angle.

[0011] Furthermore, a rubber tube is inserted into the outer wall of the cylinder to transport the oil in the cylinder to the inner cavity of the rear push rod. The touch ball and the corner tube are both magnetic, and the touch ball and the corner tube attract each other. The suction force between the touch ball and the corner tube is greater than the sliding friction between the sealing ring and the rear racket seat.

[0012] Furthermore, it also includes a compensation mechanism for extracting the oil in the rubber tube, including a rod slidably installed inside the rear push rod, a piston is provided at one end of the rod, and a first magnetic piece is fixedly installed in a ring shape at equal intervals on the inner wall of the other end of the rod.

[0013] Furthermore, it also includes a fixing part fixedly installed on the inner wall of the rear shooting seat, and a second magnetic piece is fixedly arranged on the inner wall of the fixing part in a ring shape at equal intervals. The second magnetic piece and the first magnetic piece are both arranged in an arc-shaped structure, and the second magnetic piece and the first magnetic piece attract each other. The suction force between the second magnetic piece and the first magnetic piece is greater than the sliding friction between the piston and the rear push rod.

[0014] Furthermore, a drainage groove is provided inside the rear push rod for discharging the oil stored in the inner cavity of the rear push rod into the inner cavity of the rear seat, and a second one-way valve is installed on the inner wall of the drainage groove for unidirectionally guiding the oil in the inner cavity of the rear push rod, thereby preventing the oil from flowing back into the inner cavity of the rear push rod. A first one-way valve is installed at the front end of the inner wall of the rear push rod for unidirectionally guiding the oil in the rubber tube, thereby preventing the oil from flowing back into the rubber tube.

[0015] Beneficial effects

[0016] Compared with the known public technologies, the technical solution provided by the present invention has the following beneficial effects:

[0017] Compared with the existing technology, the present invention can clean the oil mixed with particulate matter on the inner wall of the rear seat through the mutual cooperation of circular rings, sealing rings, corner tubes, cylinders, guide tubes, touch balls and rubber tubes, thereby avoiding fine marks on the surface of parts and the inner wall of the rear seat during the stamping process. At the same time, the setting of the compensation mechanism can recycle the oil, thereby reusing the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 It is a cross-sectional view of the local structure of the rear frame of the present invention;

[0022] Figure 4 A cross-sectional view of the partial structure of the rear ejector bar of the present invention;

[0023] Figure 5 It is an exploded view of the local structure of the cylinder of the present invention;

[0024] Figure 6 It is a cross-sectional view of the planar structure of the cylinder of the present invention;

[0025] Figure 7 This is a cross-sectional view of the overall structure of the circular ring member of the present invention;

[0026] Figure 8 This is a cross-sectional view of the planar structure of the rear camera seat of the present invention;

[0027] Figure 9 For the present invention Figure 8 A magnified view of the structure in Figure 2.

[0028] In the figure: 1. rear seat; 2. front seat; 3. rear seat mold; 4. rear push rod; 41. drainage groove; 42. first one-way valve; 43. second one-way valve; 5. front seat mold; 6. front push rod; 7. circular ring; 71. sealing ring; 72. corner tube; 8. cylinder; 81. right-angle hole; 82. limit shaft; 83. torsion spring; 84. guide tube; 85. touch ball; 86. rubber tube; 9. rod; 91. piston; 92. first magnetic plate; 10. fixing member; 101. second magnetic plate. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0030] The present invention will be further described below with reference to the embodiments.

[0031] Example: Refer to the attached Figure 1 -Attached Figure 9 As shown in

[0032] The rear outflow mechanism of the cold heading machine includes a rear shoot seat 1 and a front shoot seat 2. The rear shoot seat 1 and the front shoot seat 2 are arranged relative to each other. A rear seat die 3 is fixedly installed on the inner wall of the rear shoot seat 1, and a rear ejector rod 4 is elastically provided on the inner wall of the rear seat die 3. A front seat die 5 is fixedly installed on the inner wall of the front shoot seat 2, and a front ejector rod 6 is elastically provided on the inner wall of the front seat die 5. A part body is provided between the front ejector rod 6 and the rear ejector rod 4. When the front shoot seat 2 drives the front ejector rod 6 to move backward, the front ejector rod 6 will push the part body into the rear shoot seat 1, thereby performing cold heading processing on the part body through the rear seat die 3. After the processing is completed, the rear ejector rod 4 will push the formed part The main body is pushed to the front end of the rear seat 1, and finally the part body is grabbed by the gripper. As a prior art, this case will not go into details. The device also includes: a circular ring member 7, which is arranged inside the rear seat 1, and the outer surface of the circular ring member 7 is clearance-matched with the inner surface of the rear seat 1; a cylinder member 8, which is arranged in a ring shape at equal intervals inside the rear push rod 4, and a right-angle hole 81 is opened inside the cylinder member 8 for limiting the cylinder member 8, and a limiting shaft 82 is provided on the inner wall of the right-angle hole 81, and a torsion spring 83 is wound on the outer wall of the limiting shaft 82 for providing traction to the cylinder member 8, and the cylinder member 8 is rotatably connected to the rear push rod 4 through the limiting shaft 82.

[0033] Specifically, a sealing ring 71 is fixedly provided on the outer wall of the circular ring member 7, which is used to clean the oil mixed with particulate matter on the inner wall of the rear seat 1. When the circular ring member 7 drives the sealing ring 71 to slide forward, the sealing ring 71 will accumulate the oil at the corner. The interior of the circular ring member 7 is fixedly installed with corner tubes 72 in a ring-shaped and equidistant manner, which are used to absorb the oil accumulated at the corner. The limiting shaft 82 is fixedly connected to the rear push rod 4. The cross-section of the limiting shaft 82 is semicircular, and the slope is upward. When the cylinder member 8 rotates around the limiting shaft 82, the limiting shaft 82 cooperates with the right-angle hole 81, so that the cylinder member 8 rotates at a 90° right angle.

[0034] Specifically, a guide tube 84 is elastically provided on the inner wall of the cylinder 8, and a touch ball 85 is fixedly provided at the front end of the guide tube 84, which is used to transport the oil sucked by the corner tube 72 to the inner cavity of the cylinder 8 through the guide tube 84. A rubber tube 86 is inserted on the outer wall of the cylinder 8, which is used to transport the oil in the cylinder 8 to the inner cavity of the rear push rod 4. The touch ball 85 and the corner tube 72 are both magnetic, and the touch ball 85 and the corner tube 72 attract each other. When the rear push rod 4 drives the limit shaft 82 to move to the bottom of the corner tube 72, the cylinder 8 will rotate clockwise around the limit shaft 82 under the action of the torsion spring 83, so that the front end of the touch ball 85 contacts the bottom end of the corner tube 72, so that the inner cavity of the touch ball 85 is connected to the inner cavity of the corner tube 72, and the suction force between the touch ball 85 and the corner tube 72 is greater than the sliding friction between the sealing ring 71 and the rear seat 1.

[0035] As a further solution of the present invention, in this device, in order to make the oil in the rubber tube 86 flow and thus recover the oil, the present invention also provides a compensation mechanism for extracting the oil in the rubber tube 86, thereby storing the oil in the cylinder 8 in the inner cavity of the rear push rod 4. Specifically, the compensation mechanism includes a rod 9 slidably mounted inside the rear push rod 4, a piston 91 is provided at one end of the rod 9, and a first magnetic piece 92 is fixedly mounted on the inner wall of the other end of the rod 9 in a ring-shaped manner with equal intervals. It also includes a fixing member 10 fixedly mounted on the inner wall of the rear seat 1, and a second magnetic piece 101 is fixedly mounted on the inner wall of the fixing member 10 in a ring-shaped manner with equal intervals. The second magnetic piece 101 and the first magnetic piece 92 are both arranged in an arc-shaped structure, and the second magnetic piece 101 and the first magnetic piece 92 attract each other, and the suction force between the second magnetic piece 101 and the first magnetic piece 92 is greater than the sliding friction between the piston 91 and the rear push rod 4.

[0036] Specifically, a drainage groove 41 is opened inside the rear push rod 4, which is used to discharge the oil stored in the inner cavity of the rear push rod 4 into the inner cavity of the rear seat 1, and a second one-way valve 43 is installed on the inner wall of the drainage groove 41, which is used to unidirectionally guide the oil in the inner cavity of the rear push rod 4, thereby preventing the oil from flowing back into the inner cavity of the rear push rod 4. A first one-way valve 42 is installed at the front end of the inner wall of the rear push rod 4, which is used to unidirectionally guide the oil in the rubber tube 86, thereby preventing the oil from flowing back into the rubber tube 86.

[0037] According to the above, when the rear push rod 4 pushes the formed part body to the front end of the rear seat 1, the fixing member 10 fixes the rod 9 through the second magnetic piece 101 and the first magnetic piece 92, so that the rod 9 slides relatively inside the rear push rod 4. At this time, a negative pressure is continuously generated between the piston 91 and the first one-way valve 42. Then, when the rear push rod 4 drives the limit shaft 82 to move to the bottom of the corner tube 72, the cylinder 8 rotates clockwise around the limit shaft 82 under the action of the torsion spring 83, so that the front end of the touch ball 85 contacts the bottom end of the corner tube 72, thereby making the touch ball 85 The inner cavity is connected with the inner cavity of the corner tube 72. At this time, the oil accumulated at the corner through the sealing ring 71 will be stored in the inner cavity of the rear push rod 4 through the corner tube 72, the touch ball 85, the guide tube 84, the cylinder 8, the rubber tube 86, and the first one-way valve 42 under the action of atmospheric pressure. Then, when the part body is cold headed, the part body will push the rear push rod 4 to move backward. At this time, the rod 9 will slide relative to each other again inside the rear push rod 4, thereby discharging the oil stored in the rear push rod 4 through the second one-way valve 43 and the drainage groove 41 to the inner cavity of the rear seat 1.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. The rear outlet mechanism of the cold heading machine is characterized by: The invention comprises a rear seat (1) and a front seat (2), wherein a rear seat mold (3) is fixedly mounted on the inner wall of the rear seat (1), and a rear push rod (4) is elastically arranged on the inner wall of the rear seat mold (3), a front seat mold (5) is fixedly mounted on the inner wall of the front seat mold (2), and a front push rod (6) is elastically arranged on the inner wall of the front seat mold (5), a part body is arranged between the front push rod (6) and the rear push rod (4), and: A circular ring member (7) is arranged inside the rear seat (1), and a sealing ring (71) is fixedly arranged on the outer wall of the circular ring member (7) for cleaning the oil mixed with particulate matter on the inner wall of the rear seat (1). Corner tubes (72) are fixedly installed at equal intervals in an annular shape inside the circular ring member (7) for absorbing the oil accumulated at the corners; The cylinder (8) is arranged in an annular shape at equal intervals inside the rear push rod (4), and a guide tube (84) is elastically provided on the inner wall of the cylinder (8), and a touch ball (85) is fixedly provided at the front end of the guide tube (84) for transporting the oil sucked by the corner tube (72) to the inner cavity of the cylinder (8) through the guide tube (84); A right-angle hole (81) is provided inside the cylinder (8) for limiting the cylinder (8), and a limiting shaft (82) is provided on the inner wall of the right-angle hole (81). A torsion spring (83) is wound around the outer wall of the limiting shaft (82) for providing traction to the cylinder (8). The cylinder (8) is rotatably connected to the rear push rod (4) via the limiting shaft (82); The limiting shaft (82) is fixedly connected to the rear push rod (4), and the cross section of the limiting shaft (82) is semicircular, with the slope facing upward. When the cylinder (8) rotates around the limiting shaft (82), the limiting shaft (82) and the right-angle hole (81) cooperate with each other, thereby causing the cylinder (8) to rotate at a right angle of 90°. A rubber tube (86) is inserted into the outer wall of the cylinder (8) for transporting the oil in the cylinder (8) to the inner cavity of the rear push rod (4). The touch ball (85) and the corner tube (72) are both magnetic, and the touch ball (85) and the corner tube (72) attract each other. The suction force between the touch ball (85) and the corner tube (72) is greater than the sliding friction between the sealing ring (71) and the rear seat (1).

2. The rear outlet mechanism of the cold heading machine according to claim 1, characterized in that: It also includes a compensation mechanism for extracting oil from the rubber tube (86), including a rod (9) slidably mounted inside the rear push rod (4), a piston (91) being provided at one end of the rod (9), and a first magnetic piece (92) being fixedly mounted in an annular shape at equal intervals on the inner wall of the other end of the rod (9).

3. The rear outlet mechanism of the cold heading machine according to claim 2, characterized in that: The invention also includes a fixing member (10) fixedly mounted on the inner wall of the rear seat (1), and second magnetic sheets (101) are fixedly arranged on the inner wall of the fixing member (10) in a ring-shaped manner at equal intervals, the second magnetic sheet (101) and the first magnetic sheet (92) are both arranged in an arc-shaped structure, and the second magnetic sheet (101) and the first magnetic sheet (92) attract each other, and the suction force between the second magnetic sheet (101) and the first magnetic sheet (92) is greater than the sliding friction force between the piston (91) and the rear push rod (4).

4. The rear outlet mechanism of the cold heading machine according to claim 2, characterized in that: A drainage groove (41) is provided inside the rear push rod (4) for discharging the oil stored in the inner cavity of the rear push rod (4) into the inner cavity of the rear seat (1), and a second one-way valve (43) is installed on the inner wall of the drainage groove (41) for unidirectionally guiding the oil in the inner cavity of the rear push rod (4) to prevent the oil from flowing back into the inner cavity of the rear push rod (4). A first one-way valve (42) is installed at the front end of the inner wall of the rear push rod (4) for unidirectionally guiding the oil in the rubber tube (86) to prevent the oil from flowing back into the rubber tube (86).

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