Hinge U-pin flattening mechanism and flattening station
By designing a hinge U-needle flattening mechanism and utilizing common bars and lever components to achieve secondary amplification of force, the problem of difficulty in flattening U-needles in the existing technology has been solved, an efficient and stable U-needle flattening effect has been achieved, and the Production efficiency and product quality.
Patent Information
- Application Number
- CN202420933419.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the existing hinge assembly technology, it is difficult to achieve good anti-loosening effect by single-side flattening of the U needle, and it is difficult to flatten the U needle with higher hardness, making it easy to damage the hinge.
A hinge U-needle flattening mechanism is designed. By setting up a pair of common bars and lever components, the force is amplified twice. The power components are used to push the common bars and levers, causing the riveting head to approach the center at the same time, thus realizing the U-needle compression. Flatten.
It realizes the easy flattening of U needles with higher hardness, improves production efficiency, reduces production costs, and enhances the anti-loosening effect and quality stability of the product.
Smart Images
Figure CN222344086U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to hinge assembly, in particular to a hinge U-needle flattening mechanism and a hinge U-needle flattening station. Background Art
[0002] At present, the third process of the existing hinge assembly is the assembly of the cup head B and the U needle, and its parts include the main body (semi-finished product), the cup head and the U needle. During the assembly process, it is necessary to align the U needle with the corresponding mounting holes of the cup head and the main body, assemble the cup head to the main body, and then bend or flatten the end of the U needle. However, the existing flattening is a one-sided flattening of the U needle, and the anti-loosening effect is not good; in addition, for the U needle with greater hardness, it is difficult for ordinary flattening devices to flatten the U needle, and the hinge must be placed separately under the punch press for bending. Since the force of the punch press is an impact force, the hinge is easily damaged. Therefore, the existing technology has problems such as low work efficiency, high labor production costs, and unstable product quality. Utility Model Content
[0003] In order to solve the above-mentioned problems, the utility model provides a hinge U-needle flattening mechanism, which can relatively easily flatten U-needles with greater hardness, has high production efficiency, stable product quality, and reduces personnel production costs.
[0004] The utility model is realized through the following technical solutions:
[0005] A hinge U-pin flattening mechanism comprises a power element and a base plate, a pair of levers hinged on the base plate, a pair of common levers hinged between the levers and the power element, and a pair of rivet pressing heads are symmetrically arranged at the inner front ends of the pair of levers. When the power element moves forward, the pair of rivet pressing heads simultaneously and equidistantly approach the centers of the two.
[0006] Preferably, a first common bar and a second common bar are symmetrically hinged at one end in the forward direction of the power element, a first common bar is hinged at one end away from the power element to a first lever, an end of the first lever away from the first lever is hinged to the base plate through a fixed hinge element, a second common bar is hinged at one end away from the power element to a second lever, an end of the second lever away from the second lever is hinged to the base plate through a fixed hinge element, a first rivet head is provided at the inner front end of the first lever, a second rivet head is provided at the inner front end of the second lever, the first rivet head and the second rivet head are symmetrically arranged, and when the power element moves forward, the first rivet head and the second rivet head simultaneously and equidistantly approach their centers.
[0007] Preferably, a front end centerline and a rear end centerline of the first lever form an angle.
[0008] Preferably, the first lever and the second lever are consistent in shape and size.
[0009] Preferably, the first common bar and the second common bar are consistent in shape and size.
[0010] Preferably, a limiting structure is provided on the bottom plate, and the limiting structure limits the forward travel distance of the power element.
[0011] Preferably, the limiting structure is located directly in front of the power element.
[0012] Preferably, the power element comprises a cylinder.
[0013] Preferably, a cover plate is hinged on the upper side of the first lever and the second lever.
[0014] The utility model also realizes the technical effect of flattening the hinge U pin at the hinge assembly station, which is achieved through the following technical solutions:
[0015] A hinge U-pin flattening station comprises the hinge U-pin flattening mechanism described in any one of the above items, and a jig arranged in front of the first riveting head and the second riveting head.
[0016] Compared with the existing technology, the beneficial effects of the utility model are:
[0017] The utility model realizes secondary amplification of force by arranging a pair of common bars and a lever assembly, realizes conversion of a smaller force into a larger force, and easily flattens the U-needle. The U-needle has a good anti-loosening effect, a reasonable structural design, and saves space. It can improve production efficiency, reduce production costs, reduce the labor intensity of workers, and improve product yield. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is the product picture after assembling the existing hinge;
[0019] Figure 2 This is the structural diagram of the existing cup head and U needle;
[0020] Figure 3 This is a schematic diagram of the working state of the hinge U-pin flattening station of this embodiment when the U-pin is flattened;
[0021] Figure 4 for Figure 3 A schematic diagram of a top view structure;
[0022] Figure 5 for Figure 4 A partial enlarged view of the M in the middle;
[0023] Figure 6 It is a partial disassembly schematic diagram of the hinge U-pin flattening mechanism of this embodiment;
[0024] Figure 7 for Figure 6 A local enlarged view of location N in the middle;
[0025] Figure 8 This is a schematic diagram of the U-pin structure after the U-pin is flattened by the hinge U-pin flattening mechanism of this embodiment;
[0026] Among them, S1-flattening mechanism, 1-power element, 11-cylinder, 2-base plate, 31-first common bar, 32-first lever, 33-first riveting head, 41-second common bar, 42-second lever, 43-second riveting head, 5-limiting structure, 6-cover plate, 7-fixed hinge element, S2-jig, S3-hinge, A-hinge body, B-cup head, CU needle, C1-first needle, C2-second needle, C3-needle tip. DETAILED DESCRIPTION
[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementations:
[0028] Please refer to Figure 1-2 Hinge S3 includes hinge body A, cup head B, and U pin C. During the assembly process of hinge S3, it is necessary to align U pin C with cup head B and corresponding mounting holes of hinge body A, assemble cup head B onto hinge body A, and then bend or flatten the end of U pin C. U pin C includes first pin C1 and second pin C2.
[0029] Please refer to Figure 1 , which shows the structure of the hinge S3 after assembly. The first needle C1 and the second needle C2 of the U needle C pass through the cup head B and the hinge body A. However, at this time, the needle head is still round and can be easily sent off during use, causing the hinge S3 to fail. Therefore, the end of the U needle C needs to be bent or flattened.
[0030] However, the existing flattening method flattens one side of the U-needle C, and the anti-loosening effect is not good. In addition, for the U-needle C with a larger hardness, the hardness of the U-needle C that needs to be processed in this implementation is HRC58-62 degrees. It is difficult for ordinary flattening devices to flatten the U-needle C. The hinge S3 must be placed under the punch press separately to bend the U-needle C. Since the force of the punch press is an impact force, the hinge S3 is easily damaged.
[0031] In the following description, the terms "first\second\..." are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions "above", "below", "outside" and "inside" are all directions in normal use. The directions "left" and "right" refer to the left and right directions shown in the corresponding schematic diagrams, which may or may not be the left and right directions in normal use. The "front end" refers to the end close to the U needle, and the "rear end" refers to the end away from the U needle.
[0032] Please refer to Figure 3-7 The hinge U-needle flattening station of this embodiment includes a hinge U-needle flattening mechanism S1 and a fixture S2 arranged in front of the hinge U-needle flattening mechanism S1. During assembly, the hinge body A is positioned in the fixture S2, the first needle C1 and the second needle C2 of the U needle C pass through the cup head B and the hinge body A, the hinge U needle flattening mechanism S1 includes a power element 1 and a base plate 2, and the first common bar 31 and the second common bar 41 are symmetrically hinged at one end of the power element 1 in the forward direction, the first common bar 31 is hinged at one end away from the power element 1 with a first lever 32, and the first lever 32 is hinged on the base plate 2 at one end away from the first lever 32, and the second common bar 41 is hinged at one end away from the power element 1 with a second lever 42, and the second lever 42 is hinged on the base plate 2 at one end away from the second lever 42, a first riveting head 33 is provided at the inner front end of the first lever 32, and a second riveting head 43 is provided at the inner front end of the second lever 42, the first riveting head 33 and the second riveting head 43 are symmetrically arranged, and when the power element 1 moves forward, the first riveting head 33 and the second riveting head 43 simultaneously and equidistantly approach the centers of the two.
[0033] By adopting the above technical solution, when the power element 1 is pushed forward, the first common bar 31 and the second common bar 41 squeeze the first lever 32 and the second lever 42 forward at the same time. Since the first lever 32 and the second lever 42 are hinged on the base plate 2 by the fixed hinge element 7, a lever effect is formed. The driving force generated by the power element 1 is amplified secondarily and gathered at the inner front end of the first lever 32 and the second lever 42, on which the first rivet head 33 and the second rivet head 43 are provided. The two rivet heads exert force toward each other at the same time, easily flattening the needle tip C3 of the U needle C.
[0034] In one embodiment, when the first lever 32 and the second lever 42 are levering, in order to ensure that the first riveting head 33 and the second riveting head 43 remain relatively parallel, the front end centerline and the rear end centerline of the first lever 32 form an angle. When the rear end of the first lever 32 has a larger range of motion, the front end of the first lever 32 only has a smaller range of motion. In one embodiment, the fixed hinge element 7 is located at the front end.
[0035] In one embodiment, in order to ensure that the first lever 32 and the second lever 42 move simultaneously, synchronously, and with the same amplitude, the first lever 32 and the second lever 42 have the same shape and size.
[0036] In one embodiment, in order to ensure that the first common rod and the second common rod move simultaneously, synchronously, and with the same amplitude, the first common rod 31 and the second common rod 41 have the same shape and size.
[0037] In one embodiment, a limiting structure 5 is provided on the bottom plate 2 , and the limiting structure 5 limits the forward travel distance of the power element 1 to prevent the power element 1 from traveling too far, thereby causing mutual damage between the first riveting head 33 and the second riveting head 43 .
[0038] In one embodiment, in order to ensure that the limiting structure 5 can effectively limit the stroke of the power element 1 , the limiting structure 5 is located right in front of the power element 1 .
[0039] Specifically, the hinge U-pin flattening mechanism of this embodiment is a centrally symmetrical structure, the power element 1, the base plate 2, and the limiting structure 5 are symmetrical about the center line, the first common rod, the first lever 32 and the first rivet head 33 are on one side of the center line, and the second common rod, the second lever 42 and the second rivet head 43 are on the other side of the center line. When the power element 1 moves forward, the first rivet head 33 and the second rivet head 43 approach the center of both at the same time and at an equal distance.
[0040] In one embodiment, the power element 1 comprises a cylinder 11. The cylinder 11 adopts a conventional cylinder available on the market, and the specific model is selected according to the power requirement and the stroke requirement.
[0041] In one embodiment, in order to prevent foreign matter from falling between the first lever 32 and the second lever 42 and affecting the operation of the mechanism, or to prevent the movement of the first lever 32 and the second lever 42 from harming the staff, a cover plate 6 is hinged on the top of the first lever 32 and the second lever 42 to play a protective role.
[0042] The steps of the hinge U pin flattening mechanism S1 in this embodiment to flatten the U pin C are as follows:
[0043] 1) A needle tip C3 of the U needle C (the first needle C1 or the second needle C2) is located between the first riveting head 33 and the second riveting head 43 and on the center line therebetween;
[0044] 2) The power element 1 is started, pushing the first common rod and the second common rod forward at the same time, and then pushing the first lever 32 and the second lever 42 to form a lever movement, promoting the first riveting head 33 and the second riveting head 43 to move toward the center line at the same time, thereby flattening the needle tip C3 of the U needle C.
[0045] It should be noted that the anti-loosening effect can be achieved by simply flattening one of the needle tips C3 of the U needle C.
[0046] In one embodiment, when the first common rod and the second common rod form an approximately straight line, the combined force generated by the first riveting head 33 and the second riveting head 43 is the largest.
[0047] The utility model also realizes the technical effect of flattening the hinge U needle at the hinge U needle flattening station. After the hinge is assembled, the U needle C flattening operation can be performed in situ, reducing the circulation process of the hinge and saving time and labor.
[0048] Figure 8 This is a schematic diagram of the U-needle structure after the U-needle is flattened by the hinge U-needle flattening mechanism of this embodiment. The U-needle C is flattened by the hinge U-needle flattening mechanism of this embodiment to achieve an anti-loosening effect.
[0049] The hinge U-needle flattening station of the utility model realizes secondary force amplification by setting a pair of common bars and lever components, realizes the transformation of a small force into a large force, easily flattens the U-needle, has a good anti-loosening effect of the U-needle, has a reasonable structural design, saves space, can improve production efficiency, reduce production costs, reduce the labor intensity of workers, and improve product yield. It is understandable that the power element 1 can also have a combination of a motor and a push rod, as long as the push rod can achieve linear motion.
[0050] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A hinge U-pin flattening mechanism, characterized in that: It includes a power element and a base plate, a pair of levers are hinged on the base plate, a pair of common levers are hinged between the levers and the power element, and the inner front ends of the pair of levers are symmetrically provided with riveting heads. When the power element moves forward, the pair of riveting heads simultaneously and equidistantly approach the centers of the two. One end of the power element in the forward direction is symmetrically hinged with a first common lever and a second common lever, an end of the first common lever away from the power element is hinged with a first lever, an end of the first lever away from the first lever is hinged to the base plate through a fixed hinge element, an end of the second common lever away from the power element is hinged with a second lever, an end of the second lever away from the second lever is hinged to the base plate through a fixed hinge element, the inner front end of the first lever is provided with a first riveting head, the inner front end of the second lever is provided with a second riveting head, the first riveting head and the second riveting head are symmetrically arranged, and when the power element moves forward, the first riveting head and the second riveting head simultaneously and equidistantly approach the centers of the two.
2. The hinge U-pin flattening mechanism according to claim 1, characterized in that: A front end center line and a rear end center line of the first lever form an angle.
3. The hinge U-pin flattening mechanism according to claim 1, characterized in that: The first lever is consistent with the second lever in shape and size.
4. The hinge U-pin flattening mechanism according to claim 1, characterized in that: The first common bar and the second common bar are consistent in shape and size.
5. The hinge U-pin flattening mechanism according to claim 1, characterized in that: A limiting structure is arranged on the bottom plate, and the limiting structure limits the forward travel distance of the power element.
6. The hinge U-pin flattening mechanism according to claim 5, characterized in that: The limiting structure is located right in front of the power element.
7. The hinge U-pin flattening mechanism according to claim 1, characterized in that: The power element includes a cylinder.
8. The hinge U-pin flattening mechanism according to claim 1, characterized in that: Cover plates are hinged on the upper sides of the first lever and the second lever.
9. A hinge U-pin flattening station, characterized in that: It comprises the hinge U-needle flattening mechanism according to any one of claims 1 to 8, and a jig arranged in front of the first riveting head and the second riveting head.