Feeding mechanism of cold header

Abstract

The utility model relates to a feeding mechanism of a cold header, which aims to solve the technical problem of high feeding cost of the existing cold header and comprises a base, a mounting groove is arranged at the top end of the base, a cylinder is fixedly arranged at the head of the mounting groove, a sliding rail is fixedly arranged at the bottom end of the tail of the mounting groove, a sliding block is slidably arranged on the sliding rail, and a clamping mechanism is fixedly arranged at the top end of the sliding block. The clamping mechanism is provided with an adjusting block, the adjusting block is movably connected with the clamping mechanism, movable grooves are formed in the two sides of the mounting groove, clamping assemblies are movably arranged in the movable grooves, the two ends of the adjusting block are movably matched with the two clamping assemblies respectively, and the clamping assemblies are movably matched with the clamping mechanism. The clamping mechanism has the advantages of being compact in structural design and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading machines, in particular to a feeding mechanism of a cold heading machine. Background Art

[0002] Cold heading machine is a special equipment mainly used for mass production of nuts, bolts and other fasteners. Compared with the transmission cutting process, it has the advantages of effectively improving material utilization and productivity. The earliest cold heading machine in the world originated in Germany. At that time, the purpose of developing cold heading machine was mainly to manufacture bullet shells in large quantities during World War II.

[0003] The feeding mechanism of the cold heading machine is mainly driven by a cam-connecting rod mechanism to realize fixed-length feeding of the bar material, and the distance of each fixed-length feeding can also be changed by the position of the connection between the cam and the connecting rod mechanism. The existing cold heading machine feeding is driven by electricity, which has high cost, resulting in high feeding cost of the cold heading machine. Therefore, it is necessary to design a pneumatic feeding mechanism for the cold heading machine. In view of this, we propose a feeding mechanism for the cold heading machine. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide a feeding mechanism for a cold heading machine to solve the technical problem of high feeding cost of the current cold heading machine.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: design a feeding mechanism of a cold heading machine, including a base, a mounting groove is opened at the top of the base, a cylinder is fixedly provided at the head of the mounting groove, a slide rail is fixedly provided at the bottom end of the tail of the mounting groove, a slider is slidably provided on the slide rail, a clamping mechanism is fixedly provided at the top of the slider, an adjusting block is provided on the clamping mechanism, the adjusting block is movably connected with the clamping mechanism, movable grooves are opened on both sides of the mounting groove, a clamping assembly is movably provided in the movable groove, two ends of the adjusting block are respectively movably matched with two of the two clamping assemblies, and the clamping assembly is movably matched with the clamping mechanism.

[0006] Preferably, the clamping mechanism includes a clamping block, which is fixedly mounted on the top of the slider, and a movable cavity is provided on the clamping block. Two mounting plates are fixedly mounted on the top of the clamping block, and two connecting arms are rotatably provided at both ends of the mounting plates. The top ends of the two connecting arms are fixedly connected by clamping blocks, and the two clamping blocks are arranged in a symmetrical mechanism. A rubber pad is detachably and fixedly mounted on the clamping block in a linear structure, and a protrusion is fixedly mounted on the bottom end of the connecting arm, and the corresponding two connecting arms are elastically connected by a spring A.

[0007] Preferably, a through hole is opened on the mounting plate, a mounting column is arranged in the mounting cavity formed by the two through holes, a fixing block is fixedly arranged on the top of the mounting column, an auxiliary clamping block is fixedly arranged on the top of the fixing block, and the top of the auxiliary clamping block is in a V-shaped structure.

[0008] Preferably, the adjusting block comprises a sliding part, the sliding part is slidably arranged in the movable cavity, a first connecting block is fixedly provided at the head end of the sliding part, the first connecting block is movably matched with the protrusion, a first trapezoidal block is fixedly provided at the head end of the first connecting block, the first trapezoidal block is movably matched with the protrusion, a second connecting block is fixedly provided at the head end of the first trapezoidal block, second trapezoidal blocks are fixedly provided at both ends of the head of the second connecting block, the two second trapezoidal blocks are arranged in a symmetrical structure, and the head end of the second connecting block is fixedly connected to the movable end of the cylinder.

[0009] Preferably, the clamping assembly includes a straight bar, which is slidably arranged in the movable groove. The straight bar and the movable groove are elastically connected by a plurality of springs B arranged in a uniform structure. Two third trapezoidal blocks are symmetrically fixed at both ends of the straight bar close to the adjustment block. The second trapezoidal block is movably matched with the corresponding two third trapezoidal blocks, and the two ends of the clamping block are movably matched with the two third trapezoidal blocks away from the cylinder.

[0010] Preferably, a limit block is arranged in the gap between the two third trapezoidal blocks, the limit block is fixedly connected to the slide rail, and the limit block is in contact and cooperation with the clamping block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model realizes fixed-distance wire feeding by arranging a cylinder drive and a clamping mechanism for clamping. Compared with electric drive, the cost is low, and the technical problem of high feeding cost of current cold heading machines is solved.

[0013] 2. The utility model specifically designs the clamping mechanism, the adjusting block and the clamping assembly so that when the movable end of the cylinder is extended, the adjusting block is first driven to clamp the material, and the clamping mechanism is disengaged from the clamping assembly. Then, the adjusting block and the clamping mechanism as a whole are driven to slide along the slide rail with the slider to feed the material. When the movable end of the cylinder is retracted, the adjusting block and the clamping mechanism as a whole are driven to slide along the slide rail with the slider to the original position, and the clamping assembly re-limits the clamping mechanism, thereby realizing automation without manual labor and improving feeding efficiency.

[0014] 3. The utility model arranges the top of the auxiliary clamping block to be V-shaped, and the clamping cavity formed by the auxiliary clamping block and the two clamping blocks is diamond-shaped, so that the clamping mechanism can clamp materials of different sizes, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model under working loading;

[0016] Figure 2 It is a schematic cross-sectional diagram of the overall structure of the utility model;

[0017] Figure 3 It is an exploded schematic diagram of the overall structure of the utility model;

[0018] In the figure: 1, base; 2, mounting groove; 3, cylinder; 4, slide rail; 5, slider; 6, clamping mechanism; 7, adjustment block; 8, movable groove; 9, clamping assembly;

[0019] 60. Auxiliary clamping block; 61. Clamping block; 62. Active cavity; 63. Mounting plate; 64. Connecting arm; 65. Clamping block; 66. Rubber pad; 67. Protrusion; 68. Mounting column; 69. Fixed block; 641. Spring A;

[0020] 71. sliding part; 72. first connecting block; 73. first trapezoidal block; 74. second connecting block; 75. second trapezoidal block;

[0021] 91. Straight bar; 92. Spring B; 93. Third trapezoidal block; 94. Limit block. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] Embodiment: A feeding mechanism of a cold heading machine, see Figures 1 to 3 , including a base 1, a mounting groove 2 is provided at the top of the base 1, a cylinder 3 is fixed at the head of the mounting groove 2, a slide rail 4 is fixed at the bottom of the tail of the mounting groove 2, a slider 5 is slidably provided on the slide rail 4, a clamping mechanism 6 is fixed at the top of the slider 5, an adjusting block 7 is provided on the clamping mechanism 6, the adjusting block 7 is movably connected with the clamping mechanism 6, movable grooves 8 are provided on both sides of the mounting groove 2, a clamping assembly 9 is movably provided in the movable groove 8, the two ends of the adjusting block 7 are movably matched with two clamping assemblies 9 respectively, and the clamping assembly 9 is movably matched with the clamping mechanism 6. Through the above arrangement, the utility model enables the cylinder 3 to drive the clamping mechanism 6 to clamp the material, realize the fixed distance wire feeding, and has a low cost compared with the electric drive, which solves the technical problem of the high feeding cost of the current cold heading machine.

[0024] Specifically, the clamping mechanism 6 includes a clamping block 61, which is fixedly mounted on the top of the slider 5. The clamping block 61 is provided with a movable cavity 62. Two mounting plates 63 are fixedly mounted on the top of the clamping block 61. Two connecting arms 64 are rotatably mounted at both ends of the mounting plate 63. The tops of the two connecting arms 64 are fixedly connected by clamping blocks 65. The two clamping blocks 65 are arranged in a symmetrical mechanism. The clamping blocks 65 are detachably and fixedly mounted with rubber pads 66 in a linear structure. The bottom of the connecting arm 64 is fixed with a protrusion 67. The corresponding two connecting arms 64 are elastically connected by a spring A641. Through the above arrangement, the utility model allows the two connecting arms 64 to rotate to reduce the clamping cavity, and the two clamping blocks 65 move accordingly, so that the rubber pads 66 on the two clamping blocks 65 are in close contact with the surface of the material, thereby increasing the friction force and making the clamping mechanism 6 clamp the boring more stable.

[0025] Furthermore, a through hole is provided on the mounting plate 63, and a mounting column 68 is provided in the mounting cavity formed by the two through holes, and a fixing block 69 is fixedly provided at the top of the mounting column 68, and an auxiliary clamping block 60 is fixedly provided at the top of the fixing block 69, and the top of the auxiliary clamping block 60 is in a V-shaped structure. The utility model provides a V-shaped top of the auxiliary clamping block 60, and the clamping cavity formed by the auxiliary clamping block 60 and the two clamping blocks 65 is in a diamond shape, so that the clamping mechanism 6 can clamp materials of different sizes, thereby improving the applicability of the device.

[0026] Furthermore, the adjusting block 7 includes a sliding part 71, the sliding part 71 is slidably arranged in the movable cavity 62, a first connecting block 72 is fixedly arranged at the head end of the sliding part 71, the first connecting block 72 is movably matched with the protrusion 67, a first trapezoidal block 73 is fixedly arranged at the head end of the first connecting block 72, the first trapezoidal block 73 is movably matched with the protrusion 67, a second connecting block 74 is fixedly arranged at the head end of the first trapezoidal block 73, and a second trapezoidal block 75 is fixedly arranged at both ends of the head of the second connecting block 74, the two second trapezoidal blocks 75 are arranged in a symmetrical structure, and the head end of the second connecting block 74 is fixedly connected to the movable end of the cylinder 3. Through the above arrangement, when the sliding part 71 slides in the movable cavity 62, the first trapezoidal block 73 is squeezed and contacted with the protrusion 67, causing the spring A641 to pull up, and the two connecting arms 64 rotate. When the sliding part 71 slides to contact with the movable cavity 62 away from the cylinder 3, it can drive the clamping mechanism 6 to slide along the slide rail 4 along with the slider 5.

[0027] It is worth noting that the clamping assembly 9 includes a straight bar 91, which is slidably arranged in the movable groove 8. The straight bar 91 and the movable groove 8 are elastically connected through a plurality of springs B92 arranged in a uniform structure. Two third trapezoidal blocks 93 are fixedly arranged at both ends of the straight bar 91 near the adjustment block 7 in a symmetrical structure. The second trapezoidal block 75 is movably matched with the corresponding two third trapezoidal blocks 93, and the two ends of the clamping block 61 are movably matched with the two third trapezoidal blocks 93 away from the cylinder 3. Through the above arrangement, the utility model makes the second trapezoidal block 75 squeeze and contact with the third trapezoidal block 93 near the cylinder 3, so that the third trapezoidal block 93 and the straight bar 91 slide in the movable groove 8 as a whole, and the spring B92 is compressed.

[0028] In addition, a limit block 94 is arranged in the gap between the two third trapezoidal blocks 93 . The limit block 94 is fixedly connected to the slide rail 4 , and the limit block 94 is in contact with and cooperates with the clamping block 61 .

[0029] Working principle: When the movable end of the cylinder 3 extends, the adjusting block 7 moves as a whole, the sliding part 71 slides in the movable cavity 62, the second trapezoidal block 75 is squeezed and contacted with the third trapezoidal block 93 close to the cylinder 3, so that the third trapezoidal block 93 and the straight bar 91 slide as a whole in the movable groove 8, the spring B92 is compressed, and at the same time the first trapezoidal block 73 is squeezed and contacted with the protrusion 67, so that the spring A641 is pulled up, the two connecting arms 64 rotate to make the clamping cavity smaller, and the two clamping blocks 65 move accordingly, so that the rubber pads 66 on the two clamping blocks 65 are in close contact with the surface of the material, thereby increasing the friction force, so that The clamping mechanism 6 clamps the boring more stably. After that, the trapezoidal plane of the first trapezoidal block 73 slides in to provide support for the protrusion 67, so that the clamping cavity of the clamping mechanism 6 is stable. As the movable end of the cylinder 3 continues to extend, the second trapezoidal block 75 moves in plane to contact the third trapezoidal block 93 close to the cylinder 3, so that the two third trapezoidal blocks 93 away from the cylinder 3 are separated from the two ends of the clamping block 61. When the sliding part 71 slides to contact the movable cavity 62 away from the cylinder 3, the movable end of the cylinder 3 extends to drive the adjustment block 7 and the clamping mechanism 6 to slide along the slide rail 4 with the slider 5, completing the fixed-distance feeding;

[0030] When the movable end of the cylinder 3 retracts, since the rubber pad 66 of the clamping mechanism 6 is in close contact with the surface of the material and is not easy to slide, the retraction of the movable end of the cylinder 3 drives the adjusting block 7 to move as a whole, and the sliding part 71 slides in the opposite direction in the movable cavity 62, and the first trapezoidal block 73 slides relative to the protrusion 67 until the first trapezoidal block 73 is separated from the protrusion 67. Under the elastic force of the spring A641, the two connecting arms 64 rotate in the opposite direction to enlarge the clamping cavity, causing the rubber pad 66 to be separated from the surface of the material. When the sliding part 71 slides in the movable cavity 62 until it contacts the end of the movable cavity 62 close to the cylinder 3, the retraction of the movable end of the cylinder 3 drives the adjusting block 7 and the clamping mechanism 6 as a whole to slide back along the slide rail 4 along the slider 5, and return to their original position after cooperating with the clamping assembly 9. At this time, the limit block 94 contacts the clamping block 61 to provide a limiting force.

[0031] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A feeding mechanism for a cold heading machine, characterized in that: The invention comprises a base (1), a mounting groove (2) is provided at the top of the base (1), a cylinder (3) is fixedly provided at the head of the mounting groove (2), a slide rail (4) is fixedly provided at the bottom of the tail of the mounting groove (2), a slider (5) is slidably provided on the slide rail (4), a clamping mechanism (6) is fixedly provided at the top of the slider (5), an adjustment block (7) is provided on the clamping mechanism (6), the adjustment block (7) is movably connected with the clamping mechanism (6), movable grooves (8) are provided on both sides of the mounting groove (2), a clamping assembly (9) is movably provided in the movable groove (8), two ends of the adjustment block (7) are respectively movably matched with two of the two clamping assemblies (9), and the clamping assembly (9) is movably matched with the clamping mechanism (6).

2. The feeding mechanism of the cold heading machine according to claim 1, characterized in that: The clamping mechanism (6) comprises a clamping block (61), the clamping block (61) is fixedly arranged at the top end of the slider (5), the clamping block (61) is provided with a movable cavity (62), the top end of the clamping block (61) is fixedly provided with two mounting plates (63), both ends of the mounting plates (63) are rotatably provided with two connecting arms (64), the top ends of the two connecting arms (64) are fixedly connected by a clamping block (65), the two clamping blocks (65) are arranged in a symmetrical mechanism, a rubber pad (66) is detachably fixedly installed in a linear structure on the clamping block (65), a protrusion (67) is fixedly provided at the bottom end of the connecting arm (64), and the corresponding two connecting arms (64) are elastically connected by a spring A (641).

3. The feeding mechanism of the cold heading machine according to claim 2, characterized in that: The mounting plate (63) is provided with a through hole, a mounting column (68) is provided in a mounting cavity formed by two through holes, a fixing block (69) is fixedly provided at the top of the mounting column (68), an auxiliary clamping block (60) is fixedly provided at the top of the fixing block (69), and the top of the auxiliary clamping block (60) is in a V-shaped structure.

4. The feeding mechanism of the cold heading machine according to claim 3, characterized in that: The adjusting block (7) comprises a sliding part (71), the sliding part (71) is slidably arranged in the movable cavity (62), a first connecting block (72) is fixedly arranged at the head end of the sliding part (71), the first connecting block (72) is movably matched with the protrusion (67), a first trapezoidal block (73) is fixedly arranged at the head end of the first connecting block (72), the first trapezoidal block (73) is movably matched with the protrusion (67), a second connecting block (74) is fixedly arranged at the head end of the first trapezoidal block (73), both ends of the head of the second connecting block (74) are fixedly provided with second trapezoidal blocks (75), the two second trapezoidal blocks (75) are arranged in a symmetrical structure, and the head end of the second connecting block (74) is fixedly connected to the movable end of the cylinder (3).

5. The feeding mechanism of the cold heading machine according to claim 4, characterized in that: The clamping assembly (9) comprises a straight bar (91), the straight bar (91) being slidably arranged in the movable groove (8), the straight bar (91) being elastically connected to the movable groove (8) via a plurality of springs B (92) arranged in a uniform structure, two third trapezoidal blocks (93) being symmetrically fixedly arranged at both ends of a side of the straight bar (91) close to the regulating block (7), the second trapezoidal block (75) being movably matched with the corresponding two third trapezoidal blocks (93), and the two ends of the clamping block (61) being movably matched with the two third trapezoidal blocks (93) away from the cylinder (3).

6. The feeding mechanism of the cold heading machine according to claim 5, characterized in that: A limit block (94) is arranged in the gap between the two third trapezoidal blocks (93); the limit block (94) is fixedly connected to the slide rail (4); and the limit block (94) is in contact with and fits the clamping block (61).

Images