Cold heading machine cutting tool connection mechanism

Abstract

The present application discloses a connecting mechanism for a cutting tool of a cold heading machine. The ejecting block assembly includes an ejecting block base plate, a first ejecting block, a second ejecting block, and a third ejecting block that are sequentially stacked. One end in the length direction of the first ejecting block is the edge of the acceleration section, one end in the length direction of the second ejecting block is the edge of the shearing section, and one end in the length direction of the third ejecting block is the edge of the deceleration section. The concave notch, the edge of the acceleration section, the edge of the shearing section, and the edge of the deceleration section are connected to form a shearing working surface. The slopes of the edge of the deceleration section and the edge of the acceleration section are both smaller than the slope of the edge of the shearing section. For the connecting mechanism for a cutting tool of a cold heading machine provided by the present invention, the ejecting block assembly includes an ejecting block base plate, a first ejecting block, a second ejecting block, and a third ejecting block that are sequentially stacked. The main functions of the above four components are different, making the working process performance of the ejecting block assembly more excellent. Moreover, the material selection and the like between the four components can be specifically different, and at the same time, the possibility of independent replacement is provided.

Description

Technical Field

[0001] The present invention relates to the field of cold heading machine structures, and particularly to a connecting mechanism for a cutting knife of a cold heading machine. Background Art

[0002] In the currently common technologies, the cold heading machine processes raw materials through a stamping process. A conventional cold heading machine has a main power shaft, and a stamping die, a first swing arm for providing power to a cutting component, a second swing arm for providing power to a sample feeding component, and a third swing arm for providing power to a stripping plate are connected to the power shaft. The power output of the entire cold heading machine is achieved through the main power shaft.

[0003] Specifically, the operation of the cutting component generally realizes the cutting action by a slider with an arc-shaped surface to lift the cutting functional part. The slider is subject to a large impact force during operation, and there are problems such as deformation failure and high replacement frequency. Summary of the Invention

[0004] The main object of the present invention is to provide a connecting mechanism for a cutting knife of a cold heading machine, aiming to solve the problems that the slider in the cutting knife assembly of the cold heading machine is subject to a large impact force during operation, resulting in deformation failure and high replacement frequency.

[0005] To achieve the above object, the present invention provides a connecting mechanism for a cutting knife of a cold heading machine, including:

[0006] A track mechanism;

[0007] A slider, including a sliding plate and an ejecting block assembly. The sliding plate is slidably disposed on the track mechanism. The ejecting block assembly includes an ejecting block base plate, a first ejecting block, a second ejecting block, and a third ejecting block sequentially stacked. The ejecting block base plate is connected to the sliding plate. An inner concave opening is provided on the ejecting block base plate. The outer surface of the inner concave opening is divided into a connected arc segment edge and a straight segment edge in the length direction of the ejecting block base plate. One end in the length direction of the first ejecting block is an accelerating segment edge, and the accelerating segment edge is tangent to the arc segment edge. One end in the length direction of the second ejecting block is a shearing segment edge, and the shearing segment edge is connected to the accelerating segment edge. One end in the length direction of the third ejecting block is a decelerating segment edge, and the decelerating segment edge is connected to the shearing segment edge. Among them, the inner concave opening, the accelerating segment edge, the shearing segment edge, and the decelerating segment edge are connected to form a shearing working surface, and the radian of the arc segment edge is from π / 8 to π / 4;

[0008] A cutting knife assembly, including a cutting knife and a block assembly connected to the cutting knife, and the block assembly interacts with the shearing working surface;

[0009] Wherein, the slopes of the edge of the deceleration section and the edge of the acceleration section are both smaller than the slope of the edge of the shearing section.

[0010] Furthermore, the edge of the shearing section is planar.

[0011] Furthermore, the sliding plate and the ejector block assembly are connected via a bolt assembly.

[0012] Furthermore, the second ejector block is wedge-shaped, and the large-sized end is the edge of the acceleration section.

[0013] Furthermore, the edge of the acceleration section, the edge of the shearing section and the edge of the deceleration section are all planar.

[0014] Furthermore, the stopper assembly comprises a stopper card and a stopper column connected to the stopper card, and the curvature of the edge of the arc segment is consistent with the curvature of the stopper column.

[0015] Further, the stopper column may be rotatably fixed to the stopper clamp along its central axis.

[0016] Furthermore, the second ejector block includes a plurality of second sub-ejector blocks distributed along the length direction of the ejector block substrate, and the shapes of the two ends of the second sub-ejector blocks in the length direction are matched.

[0017] Furthermore, the sliding plate and the ejector block assembly are fixed by a plurality of bolt assembly pairs locked in the thickness direction of both, each bolt assembly pair corresponds to one second ejector block, and two bolt assemblies in the bolt assembly pair are arranged at intervals on the width square of the second ejector block.

[0018] Furthermore, the first ejection block and the third ejection block are both in the shape of a flat plate and have the same thickness.

[0019] The cold heading machine cutting knife connection mechanism provided by the present invention comprises an ejector block assembly comprising an ejector block substrate, a first ejector block, a second ejector block and a third ejector block which are sequentially stacked, and the main functions of the above four ejector blocks are different, so that the working process performance of the ejector block assembly is more superior; and the separate arrangement of the ejector block substrate, the first ejector block, the second ejector block and the third ejector block enables the material selection and the like among the four to be targeted and different, and provides the possibility of independent replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the position of the cold heading machine cutting knife connection mechanism in the cold heading machine according to one embodiment of the present invention;

[0021] Figure 2 Schematic diagram of a cutting blade assembly in a cutting blade connection mechanism of a cold heading machine according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the connecting mechanism of the cutting tool of a cold heading machine according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic diagram of the connecting mechanism of the cutting tool of a cold heading machine according to an embodiment of the present invention (part of the outer wall of the track mechanism is hidden);

[0024] Figure 5 It is a schematic diagram of the ejecting block assembly in the connecting mechanism of the cutting tool of a cold heading machine according to an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the ejecting block assembly in the connecting mechanism of the cutting tool of a cold heading machine according to the second embodiment of the present invention.

[0026] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Those skilled in the art of the present technology can understand that unless specifically stated, the singular forms "a", "an", "the", "above-mentioned" and "this" used herein may also include the plural forms. It should be further understood that the term "including" used in the description of the present invention means that there are the described features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0029] Those skilled in the art of the present technology can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0030] Referring to Figures 1 to 6 , in an embodiment of the present invention, a connecting mechanism of a cutting tool of a cold heading machine includes:

[0031] A track mechanism 100;

[0032] The slider 200 includes a sliding plate 210 and an ejecting block assembly 220. The sliding plate 210 is slidably disposed on the track mechanism 100. The ejecting block assembly 220 includes an ejecting block base plate 221, a first ejecting block 222, a second ejecting block 223, and a third ejecting block 223 that are sequentially stacked. The ejecting block base plate 221 is connected to the sliding plate 210. An inner concave opening is provided on the ejecting block base plate 221. The outer surface of the inner concave opening is divided into a connected arc segment edge 232 and a straight segment edge 231 in the length direction of the ejecting block base plate 221. One end of the first ejecting block 222 in the length direction is an acceleration segment edge 233, and the acceleration segment edge 233 is tangent to the arc segment edge 232. One end of the second ejecting block 223 in the length direction is a shearing segment edge 234, and the shearing segment edge 234 is connected to the acceleration segment edge 233. One end of the third ejecting block 223 in the length direction is a deceleration segment edge 235, and the deceleration segment edge 235 is connected to the shearing segment edge 234. Wherein, the inner concave opening, the acceleration segment edge 233, the shearing segment edge 234, and the deceleration segment edge 235 are connected to form a shearing working surface, and the radian of the arc segment edge 232 is from π / 8 to π / 4;

[0033] The cutting tool assembly 300 includes a cutting tool 310 and a stopper assembly 320 connected to the cutting tool 310. The stopper assembly 320 interacts with the shearing working surface;

[0034] Wherein, the slopes of the deceleration segment edge 235 and the acceleration segment edge 233 are both smaller than the slope of the shearing segment edge 234.

[0035] In the currently common technologies, a cold heading machine realizes the processing process of raw materials through a stamping process. A conventional cold heading machine has a main power shaft. A stamping die, a first swing arm for providing power to a cutting component, a second swing arm for providing power to a sample feeding component, and a third swing arm for providing power to a part ejecting plate are connected to the power shaft. The power output of the entire cold heading machine is realized through the main power shaft.

[0036] Specifically, the work of the cutting component is generally realized by a slider with an arc surface to jack up a cutting functional part to perform a cutting action. The slider is subject to a large impact force during the working process, and there are problems of deformation failure and relatively high replacement frequency.

[0037] In the present invention, the sliding plate 210 serves as a base to carry the ejector block assembly 220. The ejector block assembly 220 and the sliding plate 210 reciprocate on the track mechanism 100 together. The reciprocating motion of the ejector block assembly 220 drives the cutting tool assembly 300 to perform a cutting action. Specifically, the ejector block assembly 220 includes an ejector block base plate 221, a first ejector block 222, a second ejector block 223, and a third ejector block 223 that are sequentially stacked. The main functions of the above four components are different. The ejector block base plate 221 uses its arc-shaped edge 232 to receive the stopper assembly 320 and offset the contact impact of the stopper assembly 320 through the arc-shaped edge 232. The larger the radian of the arc-shaped edge 232, the larger the contact area with the stopper assembly 320, but the greater the blockage of the movement of the stopper assembly 320; the acceleration section edge 233 of the first ejector block 222 is used to receive the stopper assembly 320. Therefore, the acceleration section edge 233 is tangent to the arc-shaped edge 232. Since the slope of the acceleration section edge 233 is relatively small, the impact of the stopper assembly 320 is relatively small, driving the entire slider 200 from a stationary state to a moving state; the second ejector block 223 is used to make the stopper assembly 320 move away from the ejector block assembly 220 at the maximum speed, so that the cutting tool assembly 300 can complete the cutting action. During this process, since the slider 200 is already in a moving state, even if the slope of the shear section edge 234 is large, the impact between the stopper assembly 320 and the shear section edge 234 is relatively reduced; the third ejector block 223 is used to make the stopper assembly 320 complete the subsequent actions. After the cutting tool assembly 300 has completed the cutting action, there is a following sample feeding action. At this time, the relatively small radian of the deceleration section edge 235 can meet the usage requirements, and accordingly, the impact between the stopper assembly 320 and the deceleration section edge 235 is relatively reduced.

[0038] The split structure of the ejector block substrate 221, the first ejector block 222, the second ejector block 223 and the third ejector block 223 in the ejector block assembly 220 of the present invention also provides the possibility of independent replacement. When the cutting knife assembly 300 contacts the shearing section edge 234, the cutting knife assembly 300 completes the cutting action, and the position of the cut raw material is fixed. Then, when the cutting knife assembly 300 is not replaced, the second ejector block 223 basically does not need to be replaced, and the corresponding distance between the second ejector block 223 and the ejector block substrate 221 does not need to be changed, and there is no need to change the processing thickness of the first ejector block 222 accordingly (there is a certain need to change the slope of the acceleration section edge 233). By replacing the first ejector block 222, different acceleration rates can be achieved; by replacing the second ejector block 223, the quality of use of the second ejector block 223 can be guaranteed; by replacing the third ejector block 223, different delivery distances can be achieved, especially when the ejector block substrate 221, the first ejector block 222, the second ejector block 223 and the third ejector block 223 have different service lives, the above replaceability is advantageous. There can be a variety of connection methods for the components before the slider 200, such as snap connection, buckle connection, riveting or bolt connection. In the embodiments of the present invention, the slopes of the deceleration section edge 235, the acceleration section edge 233 and the shear section edge 234 are not described with specific values, but the appropriate slope is selected according to the needs of the actual use process.

[0039] In summary, the ejector block assembly 220 includes an ejector block substrate 221, a first ejector block 222, a second ejector block 223 and a third ejector block 223 which are sequentially stacked. The main functions of the above four are different, so that the working process performance of the ejector block assembly 220 is more superior; and the separate arrangement of the ejector block substrate 221, the first ejector block 222, the second ejector block 223 and the third ejector block 223 allows the material selection and the like among the four to be targetedly different, while providing the possibility of independent replacement.

[0040] Reference Figure 5 In one embodiment, the shear segment edge 234 is planar.

[0041] Then, by grinding and modifying the cross section of the second ejector block 223, the shear segment edge 234 with a poor surface condition can be easily reprocessed. In this embodiment, the second ejector block 223 is clamped between the first ejector block 222 and the third ejector block 223 (such as the presence of arrayed fixed grooves and fixed protrusions between the interfaces), and the movement of the second ejector block 223 in the length direction is restricted. Then, under the above structural conditions, the second ejector block 223 can be cut to a certain extent in the length direction and can still be well fixed between the first ejector block 222 and the third ejector block 223.

[0042] Reference Figure 5 In one embodiment, the sliding plate 210 and the ejector block assembly 220 are combined by a bolt assembly.

[0043] The above fixing method of the bolt assembly has the advantages of simple disassembly and assembly and mature technology.

[0044] In one embodiment, the second ejector block 223 is wedge-shaped, and the large-size end is the edge 233 of the acceleration section.

[0045] The above wedge-shaped setting of the two ejector block assemblies 220 enables the first ejector block 222 and the third ejector block 223 to also clamp and fix the second ejector block 223 as a whole in addition to the overall fixing assembly of the slider 200. As a result, the abnormal deformation caused by the impact force received by the second ejector block 223 is smaller. For example, if the sliding plate 210 and the ejector block assembly 220 are combined by a bolt assembly, then the characteristic that the second ejector block 223 is clamped and fixed by the first ejector block 222 and the third ejector block 223 as a whole reduces the possibility of relative damage between the second ejector block 223 and the bolt assembly.

[0046] Reference Figure 5 In one embodiment, the edge 233 of the acceleration section, the edge 234 of the shear section, and the edge 235 of the deceleration section are all planar.

[0047] In this embodiment, the above setting where the three edges are all planar reduces the manufacturing requirements compared to the arc-shaped shape, and the combination between the three edges is also simpler. It should be noted that when the stopper assembly 320 runs between the edge 233 of the acceleration section and the edge 234 of the shear section, when the stopper assembly 320 impacts the edge 233 of the acceleration section, the impact force received by the stopper assembly 320 is transmitted to the cutting knife 310, and at this time, the cutting knife 310 can perform the cutting function well; when the stopper assembly 320 runs between the edge 234 of the shear section and the edge 235 of the deceleration section, the cutting knife 310 has completed the cutting process, and the slope of the edge 235 of the deceleration section is smaller than the slope of the edge 234 of the shear section. Then, the linear angle between the edge 234 of the shear section and the edge 235 of the deceleration section has a smaller impact on the movement of the cutting knife assembly 300.

[0048] In one embodiment, the stopper assembly 320 includes a stopper card 321 and a stopper post 322 connected to the stopper card 321, and the curvature of the arc-shaped edge 232 is consistent with the curvature of the stopper post 322.

[0049] In this embodiment, the curvature of the arc-shaped segment edge 232 and the stop post 322 of the stop block assembly 320 enable the stop block assembly 320 to act on the ejector block substrate 221 more smoothly. The stop post 322 of the stop block assembly 320 cuts into the arc-shaped segment edge 232 more smoothly. At this time, the mutual damage between the stop block assembly 320 and the ejector block substrate 221 is relatively small, which is beneficial to the use process and service life of both.

[0050] Referring to Figure 2 , in one embodiment, the stop post 322 is rotatably fixed to the stop block 321 along its central axis.

[0051] First of all, only the position where the stop post 322 contacts the shearing working surface will affect the operation of the cutting tool assembly 300. In this embodiment, the stop post 322 is set to be rotatable, so the mutual damage caused between the stop post 322 and the shearing working surface is reduced, and at the same time, the working effect is improved.

[0052] Referring to Figure 6 , in one embodiment, the second ejector block 223 includes a plurality of second sub-ejector blocks 225 distributed along the length direction of the ejector block substrate 221, and the shapes of both ends of the second sub-ejector block 225 in the length direction are matched.

[0053] In this embodiment, a method for improving the service life of the second ejector block 223 is proposed. When the shearing segment edge 234 contacts the stop block assembly 320, the cutting tool 310 completes the cutting process. At this time, the acting force of the cutting tool assembly 300 on the shearing segment edge 234 is relatively large, especially when the diameter of the raw material to be cut is relatively large. The contact mode between the stop block assembly 320 and the shearing segment edge 234 is line contact, while the contact mode between the plurality of second ejector blocks 223 is surface contact. Then, the damage of the stop block assembly 320 to the second sub-ejector block 225 in contact with it is much greater than the mutual damage between the second ejector blocks 223. Then, the working conditions of the first second ejector block 223 deteriorate relatively quickly. By means of the rotation of the subsequent second ejector blocks 223 in turn, the utilization rate of the second ejector block 223 is improved. It should be noted that when the accelerating segment edge 233, the shearing segment edge 234, and the decelerating segment edge 235 are all planar, if the shapes of both ends of the second sub-ejector block 225 in the length direction are matched, the longitudinal section of the second sub-ejector block 225 is in the shape of a parallelogram. At this time, both ends of the second sub-ejector block 225 in the length direction can be used as the shearing segment edge 234.

[0054] Referring to Figure 6, in one embodiment, the sliding plate 210 and the ejector block assembly 220 are fixed by a plurality of bolt assemblies 230 locked in the thickness direction of the two, and each bolt assembly 230 corresponds to one of the second sub-ejector blocks 225. The two bolt assemblies in the bolt assembly 230 are arranged at intervals in the width direction of the second sub-ejector block 225.

[0055] In this embodiment, a simple and stable fixing method is provided, which realizes the fixing of the whole slider 200 and also realizes the fixing of the second sub-ejector block 225. The number of the second sub-ejector blocks 225 is three, and the number of the bolt assemblies 230 is three. The two bolt assemblies in the bolt assembly 230 are arranged at intervals in the width direction of the second sub-ejector block 225, so that the possibility of abnormal rotation of each component in the slider 200 is reduced, and a relatively stable fixed connection can be formed.

[0056] Refer to Figure 5 , in one embodiment, both the first ejector block 222 and the third ejector block 223 are flat plates and have the same thickness.

[0057] During the operation of the slider 200 and the cutting tool assembly 300, that is, during the operation of the shearing working surface and the stopper assembly 320, since the first ejector block 222 acts on the stopper assembly 320 before the slider 200 starts to slide, the impact on the first ejector block 222 is relatively large. When the third ejector block 223 acts on the stopper assembly 320, the slider 200 has already slid sufficiently, so the impact on the third ejector block 223 is relatively small. In this embodiment, the thicknesses of the first ejector block 222 and the third ejector block 223 are made the same, and at this time, the first ejector block 222 and the third ejector block 223 can be swapped to make their usage states the same. Specifically, in order to enable the first ejector block 222 and the third ejector block 223 to be replaced in position, their fixing structures may need to be adaptively set. For example, the fixing methods of both the first ejector block 222 and the third ejector block 223 are bolt connections. Four fixing perforations are provided on the first ejector block 222, and three fixing perforations are provided on the third ejector block 223. When the first ejector block 222 is in the original position, the last three fixing perforations are used, and the first ejector block 222 uses all three fixing perforations. When the first ejector block 222 and the third ejector block 223 are swapped in position, the first three fixing perforations are used, and the last two fixing perforations of the first ejector block 222 are used.

[0058] In one embodiment, the radian of the arc segment edge 232 is π / 4.

[0059] The larger the curvature of the arc segment edge 232, the larger the contact area with the block assembly 320, but the resistance to the movement of the block assembly 320 is also greater. Therefore, the curvature of the arc segment edge 232 has a moderate value. In the present embodiment, it is selected to be π / 4. At this time, the arc segment edge 232 can form a surface contact with the block assembly 320, and the acceleration segment edge 233 can also well receive the block assembly 320.

[0060] In summary, the cold heading machine cutting knife connection mechanism provided by the present invention, the ejector block assembly 220 includes an ejector block substrate 221, a first ejector block 222, a second ejector block 223 and a third ejector block 223 which are sequentially stacked, and the main functions of the above four are different, so that the working process performance of the ejector block assembly 220 is more superior; and the separate arrangement of the ejector block substrate 221, the first ejector block 222, the second ejector block 223 and the third ejector block 223 makes the material selection between the four different in a targeted manner, and at the same time provides the possibility of independent replacement.

[0061] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A connecting mechanism for a cutting tool of a cold heading machine, characterized in that, Comprising: An orbital mechanism (100); A slider (200), comprising a sliding plate (210) and an ejector block assembly (220), wherein the sliding plate (210) is slidably disposed on the orbital mechanism (100), and the ejector block assembly (220) includes an ejector block base plate (221), a first ejector block (222), a second ejector block (223), and a third ejector block (224) that are sequentially stacked. The ejector block base plate (221) is connected to the sliding plate (210). An inner concave opening is provided on the ejector block base plate (221). The outer surface of the inner concave opening is divided into a connected arc segment edge (232) and a straight segment edge (231) in the length direction of the ejector block base plate (221). One end of the first ejector block (222) in the length direction is an acceleration segment edge (233), and the acceleration segment edge (233) is tangent to the arc segment edge (232). One end of the second ejector block (223) in the length direction is a shear segment edge (234), and the shear segment edge (234) is connected to the acceleration segment edge (233). One end of the third ejector block (224) in the length direction is a deceleration segment edge (235), and the deceleration segment edge (235) is connected to the shear segment edge (234). Wherein, the inner concave opening, the acceleration segment edge (233), the shear segment edge (234), and the deceleration segment edge (235) are connected to form a shear working surface, and the radian of the arc segment edge (232) is from π / 8 to π / 4; A cutting tool assembly (300), comprising a cutting tool (310) and a stopper assembly (320) connected to the cutting tool (310), and the stopper assembly (320) interacts with the shear working surface; Wherein, the slopes of the deceleration segment edge (235) and the acceleration segment edge (233) are both smaller than the slope of the shear segment edge (234); the shear segment edge (234) is planar; the sliding plate (210) and the ejector block assembly (220) are combined through a bolt assembly; the second ejector block (223) includes a plurality of second sub-ejector blocks (225) distributed along the length direction of the ejector block base plate (221), and the shapes of both ends of the second sub-ejector block (225) in the length direction are matched; the sliding plate (210) and the ejector block assembly (220) are fixed by multiple groups of bolt assemblies pairs (230) locked in the thickness direction of the two. Each group of bolt assemblies pairs (230) corresponds to one of the second sub-ejector blocks (225), and the two bolt assemblies in the bolt assemblies pair (230) are spaced apart in the width direction of the second sub-ejector block (225).

2. The cold heading machine cutting tool connection mechanism according to claim 1, characterized in that, The second ejector block (223) is wedge-shaped, and the large-size end is the acceleration segment edge (233).

3. The cold heading machine cutting tool connection mechanism according to claim 1, characterized in that, The acceleration segment edge (233), the shear segment edge (234), and the deceleration segment edge (235) are all planar.

4. The cold heading machine cutting tool connection mechanism according to claim 1, characterized in that The stopper assembly (320) includes a stopper card (321) and a stopper post (322) connected to the stopper card (321), and the curvature of the arc-shaped edge (232) is consistent with the curvature of the stopper post (322).

5. The cold heading machine cutting tool connection mechanism according to claim 4, characterized in that The stopper post (322) is rotatably fixed to the stopper card (321) along its central axis.

6. The cold heading machine cutting tool connection mechanism according to any one of claims 1 to 5, characterized in that Both the first ejector block (222) and the third ejector block (224) are flat plates and have the same thickness.

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