Shearing assembly and fastener forming apparatus

Abstract

This utility model relates to the field of fastener forming technology, and discloses a shearing assembly and fastener forming equipment. The shearing assembly includes a shear frame, shears, a wedge, and a positioning element. The shear frame is mounted on a frame and has a first direction and a second direction perpendicular to each other. The shear frame is movable in the first direction and includes a mounting groove and a support portion. The mounting groove extends along the first direction. The shears are mounted on the shear frame through the mounting groove and are opposite to the support portion in the first direction. The shears include a shearing hole perpendicular to the first direction. The wedge is disposed between the shears and the support portion and includes a first inclined surface inclined to the first and second directions. The positioning element is disposed on the shear frame and is used to abut against the positioning wedge in the second direction to adjust the position of the shears in the first direction. This utility model achieves fine-tuning of the shears in the first direction through the positioning element. The first inclined surface reduces the impact on the positioning element, allowing the positioning element to more stably position the shears.

Description

Technical Field

[0001] This utility model relates to the field of fastener forming technology, specifically to shearing components and fastener forming equipment. Background Technology

[0002] Fastener forming equipment can process wire into parts such as screws and rivets. Before stamping, the wire must first be cut using a shearing assembly.

[0003] Some related technologies employ shearing assemblies with circular shearing holes. Wire fed from the feed hole passes through the shearing hole, which moves laterally relative to the feed hole, thus cutting the wire. In this design, the shearing hole provides good support for the wire, preventing bending and deformation during the shearing process. This helps improve the flatness of the sheared cut of the bar stock, thereby meeting the demands of high-quality screw and rivet production.

[0004] To improve the support effect, the diameter of the shearing hole needs to be close to the wire diameter, which places high demands on the positional accuracy of the shearing hole. However, the relevant technology uses shims to adjust the position of the shearing hole, which is inconvenient. Utility Model Content

[0005] In view of this, the present invention provides a shearing assembly and a fastener forming device to solve the problem of inconvenient adjustment of the shearing hole position.

[0006] In a first aspect, this utility model provides a shearing assembly, including a shear frame, shears, a wedge, and a positioning member. The shear frame is mounted on a frame and has a first direction and a second direction perpendicular to each other. The shear frame is movable in the first direction. The shear frame includes a mounting groove and a support portion. The mounting groove extends along the first direction. The shears are mounted on the shear frame through the mounting groove and are opposite to the support portion in the first direction. The shears include a shearing hole perpendicular to the first direction. The wedge is disposed between the shears and the support portion in the first direction and includes a first inclined surface inclined to both the first and second directions. The positioning member is disposed on the shear frame and is used to abut against and position the wedge in the second direction to adjust the position of the shears in the first direction.

[0007] Beneficial effects: By adjusting and positioning the wedge in the second direction using the positioning element, the scissors can be easily fine-tuned in the first direction. During cutting, the first inclined plane can decompose the force on the wedge into components along the first and second directions, thereby reducing the impact on the positioning element and enabling the positioning element to position the scissors more stably.

[0008] In one alternative embodiment, the wedge further includes a bearing surface facing the first direction, the bearing surface abutting against the scissors, and the support includes a second inclined surface parallel to the first inclined surface, the first inclined surface abutting against the second inclined surface.

[0009] Beneficial effects: When the wedge moves in the second direction, the shear frame pushes the wedge to move in the first direction, thereby adjusting the position of the shears. The first and second inclined surfaces are in surface contact, which can reduce the pressure and improve the force performance of the shearing assembly.

[0010] In one alternative embodiment, the angle between the first inclined plane and the first direction is greater than 45° and less than 90°.

[0011] Beneficial effects: On the one hand, using an angle greater than 45° and less than 90° can reduce the angle, thus allowing for more precise adjustment of the scissors' position. On the other hand, using an angle greater than 45° and less than 90° also reduces the proportion of the force component in the second direction, thereby further reducing the impact on the positioning component.

[0012] In one optional embodiment, the number of wedges is two, the scissor frame includes two second inclined surfaces, the two second inclined surfaces are in opposite directions and face outwards from the scissor frame in the second direction; the number of scissors is two, and the two scissors are respectively arranged corresponding to the two wedges.

[0013] Beneficial effect: During cutting, the two shears cut two wires respectively, and the forces in the second direction on the shear frame can cancel each other out, thereby reducing the impact on the shear frame in the second direction.

[0014] In one alternative embodiment, the positioning element includes a positioning screw, and the scissor holder has a threaded hole along the second direction, with the positioning screw disposed in the threaded hole.

[0015] Beneficial effects: By adjusting the degree of screwing of the positioning screw into the threaded hole, the position of the wedge in the second direction can be precisely adjusted, and the threaded connection between the positioning screw and the threaded hole can also improve the positioning screw's ability to withstand impact.

[0016] In one alternative embodiment, the device further includes a drive mechanism mounted on a frame, the drive mechanism being used to drive the spindle and the shear frame to cut the wire; it also includes a rolling element mounted on the shear frame, the drive mechanism abutting against the rolling element.

[0017] Beneficial effects: The drive mechanism is used to drive the scissor frame. By connecting the drive mechanism and the scissor frame in an abutting manner, the drive mechanism does not need to be disassembled when the scissor frame is disassembled, which improves the convenience of maintenance of the shearing assembly. Rolling friction is formed between the rolling elements and the drive mechanism, making the transmission between the drive mechanism and the scissor frame smoother.

[0018] In an alternative embodiment, an elastic element is further included, disposed between the frame and the scissor frame, to allow the scissor frame to spring back to its original position.

[0019] Beneficial effect: After shearing, the elastic element pushes the shear frame back to its original position so that the next shearing can be performed.

[0020] In one optional embodiment, the elastic element is a compression spring, and the shearing assembly further includes a guide shaft that extends along the first direction, is disposed on the shear frame and passes through the machine frame, and the compression spring is sleeved on the guide shaft.

[0021] Beneficial effects: The guide shaft can guide the scissor holder, preventing the scissor holder from shifting its position. The guide shaft can also limit the pressure spring, preventing the pressure spring from falling off.

[0022] In one alternative implementation, the first direction is along the vertical direction.

[0023] Beneficial effects: By adopting a vertical setting, the direction of gravity is parallel to the first direction, thereby using gravity to promote the movement of the scissor frame and reducing the force on the scissor frame in the second direction.

[0024] Secondly, this utility model also provides a fastener forming device, including a frame and a shearing assembly provided by this utility model, wherein the shearing assembly is disposed on the frame.

[0025] Beneficial effects: The fastener forming equipment includes the shearing component provided by this utility model, and therefore has the corresponding beneficial effects brought by the shearing component, which will not be elaborated here. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of a shearing assembly according to an embodiment of the present utility model;

[0028] Figure 2 This is a partial structural schematic diagram of a shearing assembly according to an embodiment of the present utility model;

[0029] Figure 3 This is a partial structural schematic diagram of a shearing assembly according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the main structure of the fastener forming equipment according to an embodiment of the present utility model, in which a portion of the fastener forming equipment frame is hidden.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Scissor holder; 101. Mounting groove; 102. Support part; 103. Second inclined surface; 104. Threaded hole; 2. Scissors; 201. Shearing hole; 3. Wedge block; 301. First inclined surface; 302. Bearing surface; 4. Drive mechanism; 5. Rolling element; 6. Elastic element; 7. Guide shaft; 8. Guide shaft seat; 9. Main shaft. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a," "an," and "comprising" as used herein may also mean including the plural forms. The terms "comprising," "including," and "having" are inclusive and therefore indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof.

[0035] Although terms such as "first," "second," etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Furthermore, in the description of this utility model, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "end," "length," "inner," "outer," etc. Such spatial relative terms are intended to include different orientations of the mechanism in use or operation, in addition to those depicted in the figure. For example, if the mechanism in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0037] In some related technologies, fastener forming equipment uses shears 2 with circular shearing holes 201 to cut wire. The wire is inserted into the shearing holes 201, and the inner wall of the shearing holes 201 radially supports the outer periphery of the wire, which helps to improve the flatness of the shear cut of the bar stock, thereby meeting the requirements for the production of high-quality screws and rivets. Therefore, during the assembly of the fastener forming equipment, the position of the shearing holes 201 needs to be precisely adjusted to align the shearing holes 201 with the wire feeding holes.

[0038] Some related technologies use shims for fine-tuning, but the specifications and quantity of the shims need to be changed repeatedly during the adjustment process, which is inconvenient.

[0039] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0040] Reference Figure 1 , Figure 2 , Figure 3According to an embodiment of the present invention, a shearing assembly is provided, including a shear frame 1, shears 2, a wedge block 3, and a positioning member (not shown in the figure). The shear frame 1 is mounted on a frame and has a first direction (shown in the Z direction in the figure) and a second direction (shown in the X direction in the figure) that are perpendicular to each other. The shear frame 1 is movable in the first direction. The shear frame 1 includes a mounting groove 101 and a support portion 102. The mounting groove 101 extends along the first direction. The shears 2 are mounted on the shear frame 1 through the mounting groove 101 and are opposite to the support portion 102 in the first direction. The shears 2 include a shearing hole 201 perpendicular to the first direction. The wedge block 3 is disposed between the shears 2 and the support portion 102 in the first direction and includes a first inclined surface 301 inclined to the first and second directions. The positioning member is disposed on the shear frame 1 and is used to abut against the positioning wedge block 3 in the second direction to adjust the position of the shears 2 in the first direction.

[0041] On the one hand, by adjusting and positioning the wedge 3 in the second direction through the positioning component, the scissors 2 can be easily fine-tuned in the first direction. On the other hand, when shearing, the first inclined surface 301 can decompose the force on the wedge 3 into components along the first and second directions, thereby reducing the impact on the positioning component, reducing the risk of the positioning component becoming unstable after long-term use, and enabling the positioning component to position the wedge 3 more stably.

[0042] It is understood that the first inclined surface 301 can be set as the force-bearing surface between the scissor block 1 and the wedge block 3, for example, referring to Figure 3 In some embodiments, the wedge 3 further includes a bearing surface 302 facing the first direction, the bearing surface 302 abutting against the scissors 2, and the support portion 102 includes a second inclined surface 103 parallel to the first inclined surface 301, the first inclined surface 301 abutting against the second inclined surface 103. Alternatively, in some other embodiments not shown, the first inclined surface 301 may also be configured as a force-bearing surface between the wedge 3 and the scissors 2, and the present invention does not limit this.

[0043] When the wedge 3 moves in the second direction, the shear frame 1 pushes the wedge 3 to move in the first direction, thereby adjusting the position of the shears 2. The first inclined surface 301 and the second inclined surface 103 are in surface contact, which can reduce the pressure and improve the force performance of the shearing assembly.

[0044] Optionally, in some embodiments, the included angle A between the first inclined plane 301 and the first direction is greater than 45° and less than 90°. On the one hand, using an included angle greater than 45° and less than 90° can reduce the travel distance of the wedge block 3 in the second direction, making the travel distance of the wedge block 3 in the first direction greater than that in the first direction, thereby enabling more precise adjustment of the position of the scissors 2. On the other hand, using an included angle greater than 45° and less than 90° also reduces the proportion of the force component in the second direction, thereby further reducing the impact on the positioning component.

[0045] For example, the included angle can be 50°, 60°, 75°, 80°, etc., which are greater than 45° and less than 90°.

[0046] Understandably, when cutting the wire, the wedge 3 applies a force to the scissor frame 1 in the second direction. To reduce the impact on the scissor frame 1 in the second direction, in some embodiments, there are two wedges 3, and the scissor frame 1 includes two second inclined surfaces 103, which are in opposite directions. In use, the scissors 2 simultaneously apply forces to both wedges 3, and each wedge 3 applies a force to the scissor frame 1. The components of the forces applied by the two wedges 3 in the first direction are superimposed, and the components of the forces applied by the two wedges 3 in the second direction can cancel each other out, thereby reducing the impact on the scissor frame 1 in the second direction.

[0047] Furthermore, referring to Figure 2 In some embodiments, the two second inclined surfaces 103 face outward in the second direction, which can prevent the thickness of the scissor frame 1 from being too thin in the second direction and improve the stress performance of the scissor frame 1.

[0048] Some fastener forming equipment has the requirement to process multiple wires at the same time. Therefore, in some embodiments, the number of scissors 2 is two, and the two scissors 2 are respectively set with two wedges 3.

[0049] During cutting, each pair of scissors 2 is used to cut one or more wires. The number of wires cut by the two pairs of scissors 2 is set to be the same, so that the forces applied are as close as possible, thereby reducing the impact on the scissor frame 1 in the second direction.

[0050] Specifically Figure 2 In the illustrated embodiment, each of the two scissors 2 has a cutting hole 201. When processing one wire, the fastener forming device selects one of the cutting holes 201. When processing two wires simultaneously, the fastener forming device uses one cutting hole 201 of each of the two scissors 2, thereby reducing the impact on the scissor frame 1 in the second direction.

[0051] Furthermore, in some embodiments, the scissors 2 need to be switched between multiple mounting slots 101. In order to match the scissors 2 located in different positions, viewed from the first direction, at least one wedge 3 can be aligned with multiple mounting slots 101, thereby supporting the scissors 2 mounted in different mounting slots 101.

[0052] For example, refer to Figure 2The shearing assembly has two wedges 3, one large and one small. When viewed from the first direction, the relatively smaller wedge 3 is aligned with one mounting groove 101, and the relatively larger wedge 3 is aligned with two mounting grooves 101. Regardless of which mounting groove 101 the shears 2 is installed in, it can be reliably supported by the wedges 3.

[0053] In some embodiments, the positioning element includes a positioning screw, and the scissor holder 1 has a threaded hole 104 along the second direction, in which the positioning screw is disposed. By adjusting the degree of screwing of the positioning screw into the threaded hole 104, the position of the wedge 3 in the second direction can be precisely adjusted, and the threaded connection between the positioning screw and the threaded hole 104 can also improve the impact resistance of the positioning screw.

[0054] Reference Figure 2 and Figure 3 In the second direction, the wedge 3 and the scissors 2 can be pressed and fixed together by threaded fasteners (e.g., bolts passing through the mounting slot 101, not shown in the figure). When adjusting, loosen the threaded fasteners appropriately, then rotate the positioning screw to bring the scissors 2 to the target position, and then retighten the threaded fasteners. Other fixing methods for the wedge 3 and the scissors 2 can be found in the relevant prior art, and will not be described in detail here.

[0055] In some embodiments, refer to Figure 1 The shearing assembly also includes a drive mechanism 4, which is mounted on the frame and is used to drive the spindle 9 and the shear frame 1 to drive the shears 2 to cut the wire. The shearing assembly also includes a rolling element 5, which is mounted on the shear frame 1 and the drive mechanism 4 abuts against the rolling element 5.

[0056] The drive mechanism 4 is used to drive the scissor frame 1. By connecting the drive mechanism 4 and the scissor frame 1 in an abutting manner, the drive mechanism 4 does not need to be disassembled when the scissor frame 1 is disassembled, which improves the convenience of maintenance of the shearing assembly. Rolling friction is formed between the rolling element 5 and the drive mechanism 4, which makes the transmission between the drive mechanism 4 and the scissor frame 1 smoother.

[0057] It is understood that the drive mechanism 4 includes a cam, which enables the scissor holder 1 to move at a set frequency and speed, thereby cooperating with other components of the fastener forming equipment to receive and cut the wire fed from the feed hole. The specific design of the drive mechanism 4 can be found in relevant existing technologies, and will not be elaborated here.

[0058] In some embodiments, the shearing assembly further includes an elastic element 6 disposed between the frame and the shear frame 1 to allow the shear frame 1 to spring back to its original position. Optionally, refer to... Figure 2 and Figure 3The elastic element 6 can be a compression spring. The shearing assembly also includes a guide shaft 7, which extends along a first direction. The guide shaft 7 is mounted on the shear frame 1 and passes through the frame. The compression spring is sleeved on the guide shaft 7.

[0059] The guide shaft 7 can guide the scissor frame 1 to prevent the position of the scissor frame 1 from shifting. The guide shaft 7 can also limit the pressure spring to prevent the pressure spring from falling off.

[0060] Specifically, in some embodiments, the shearing assembly further includes two guide shaft seats 8, which are symmetrically arranged on both sides of the shear frame 1. The rolling element 5 is a roller, and the roller's axis of rotation is along a second direction. The shearing assembly also includes a roller shaft, which passes through the roller, the shear frame 1, and the two guide shaft seats 8, thereby positioning the guide shaft seats 8. One end of each of the two guide shafts 7 is inserted into the two guide shaft seats 8 and fixed by threads. The other end of each of the two guide shafts 7 is inserted into two linear bearings on the frame.

[0061] In some embodiments, the first direction is vertical. By adopting a vertical arrangement, the direction of gravity is parallel to the first direction, thereby utilizing gravity to promote the movement of the scissor frame 1 and reducing the force on the scissor frame 1 in the second direction.

[0062] Specifically, refer to Figure 1 The scissors 2 are located on the upper side of the scissors frame 1, and the roller is located on the lower side of the scissors frame 1. When the roller is lifted by the drive mechanism 4, the scissors frame 1 and the guide shaft seat 8, which are connected by the roller shaft, will be lifted synchronously. This allows the scissors frame 1 and the guide shaft seat 8 to move vertically upward synchronously under the constraint of the guide shaft 7 to reach the highest point of the stroke and cut the wire. Conversely, when the roller is no longer lifted by the drive mechanism 4, the scissors frame 1, together with the guide shaft seat 8 and the guide shaft 7, will move vertically downward synchronously under their own weight and the elastic force of the elastic element to return to the lowest point of the stroke, thus completing one cutting process.

[0063] Secondly, referring to Figure 4 The present invention also provides a fastener forming device, including a frame (not shown in the figure) and a shearing assembly provided by the present invention, the shearing assembly being disposed on the frame.

[0064] The fastener forming equipment includes the shearing assembly provided by this utility model, and therefore has the beneficial effects brought by the shearing assembly, which will not be elaborated here. It is understood that... Figure 4 The main body of the fastener forming equipment frame is hidden in the middle so as to show the scissors 2 and scissor holder 1 located inside the frame.

[0065] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A shearing assembly, characterized in that, include: A scissor frame (1) is used to be mounted on a frame and has a first direction and a second direction that are perpendicular to each other. The scissor frame (1) is movable in the first direction. The scissor frame (1) includes a mounting groove (101) and a support (102). The mounting groove (101) extends along the first direction. Scissors (2) are mounted on the scissor holder (1) through the mounting groove (101) and are opposite to the support (102) in the first direction. The scissors (2) include a cutting hole (201) perpendicular to the first direction. The wedge (3) is disposed between the scissors (2) and the support (102) in the first direction, and includes a first inclined surface (301) inclined to the first direction and the second direction; A positioning element is provided on the scissor holder (1) for abutting and positioning the wedge block (3) in the second direction to adjust the position of the scissors (2) in the first direction.

2. The shearing assembly according to claim 1, characterized in that, The wedge (3) also includes a bearing surface (302) facing the first direction, the bearing surface (302) abutting against the scissors (2), and the support (102) includes a second inclined surface (103) parallel to the first inclined surface (301), the first inclined surface (301) abutting against the second inclined surface (103).

3. The shearing assembly according to claim 2, characterized in that, The angle A between the first inclined plane (301) and the first direction is greater than 45° and less than 90°.

4. The shearing assembly according to claim 2, characterized in that, The number of the wedges (3) is two, and the scissor frame (1) includes two second inclined surfaces (103), the two second inclined surfaces (103) are in opposite directions and are oriented towards the outside of the scissor frame (1) in the second direction; The number of scissors (2) is two, and the two scissors (2) are respectively set with the two wedges (3).

5. The shearing assembly according to claim 1, characterized in that, The positioning element includes a positioning screw, and the scissor bracket (1) has a threaded hole (104) along the second direction, and the positioning screw is disposed in the threaded hole (104).

6. The shearing assembly according to claim 1, characterized in that, It also includes a drive mechanism (4), which is mounted on the frame and is used to drive the spindle (9) and the shear frame (1) to drive the shears (2) to cut the wire; It also includes a rolling element (5), which is disposed on the scissor holder (1), and the drive mechanism (4) abuts against the rolling element (5).

7. The shearing assembly according to claim 1, characterized in that, It also includes an elastic element (6) for being disposed between the frame and the scissor frame (1) to allow the scissor frame (1) to spring back to its original position.

8. The shearing assembly according to claim 7, characterized in that, The elastic element (6) is a compression spring. The shearing assembly also includes a guide shaft (7), which extends along the first direction. The guide shaft (7) is disposed on the shear frame (1) and passes through the frame. The compression spring is sleeved on the guide shaft (7).

9. The shearing assembly according to claim 1, characterized in that, The first direction is along the vertical direction.

10. A fastener forming device, characterized in that, include: frame; The shearing assembly according to any one of claims 1 to 9 is disposed on the frame.

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