A profiling mechanism for tongs handle mounting and its handle machine and mounting method

Abstract

The present application relates to the technical field of pliers processing, in particular to a profiling mechanism for pliers sleeve handle installation, a sleeve handle machine and an installation method, the upper and lower ends of the profiling mechanism are respectively provided with upper and lower pressure mechanisms, and the profiling mechanism is provided with a glue handle pressing mechanism for pressing the pliers glue handle into the pliers light handle, a stress eliminator is mounted on the glue handle pressing mechanism, each glue handle pressing assembly comprises a first linear slide rail fixedly installed on the profiling mechanism, a first sliding block is slidably arranged on the first linear slide rail, a profiling following plate is fixedly installed on the first sliding block, a first air cylinder is fixedly installed on the profiling following plate, and the output end of the first air cylinder is connected with a glue handle angle adjusting plate through a connecting plate. The present application has the advantages of simple structure, reasonable design, traditional glue adding process can be omitted, production workshop environment can be protected, health can be ensured, efficiency can be improved, traditional electric oven baking glue handle stress removal process can be omitted, safety risk of electric heating can be eliminated, production safety can be ensured, and energy can be saved.

Description

Technical Field

[0001] This invention relates to the field of pliers processing technology, specifically to a conforming mechanism for installing pliers handles, a handle-mounting machine, and an installation method thereof. Background Technology

[0002] Commonly used pliers are classified into three types according to the shape of their jaws: flat-nose pliers (also known as vise pliers or wire cutters), needle-nose pliers, and diagonal-nose pliers. They are also classified by length, with each type available in 8-inch, 7-inch, and 6-inch sizes. Regardless of the type, all pliers consist of a smooth handle and a rubber handle. During assembly, the rubber handle is fitted onto the smooth handle. The smooth handle is formed by casting molten iron using a mold or by forging steel bars at high temperatures using a mold. To accommodate hand grip and mechanical characteristics, its outer surface is irregularly curved. The rubber handle has a thicker outer wall, and its external dimensions often vary. The thickness varies within safe limits, and the size adheres to the principle of easy grip and use. Most pliers handles are designed with anti-slip lugs to prevent fingers from sliding forward and causing electric shock during electrical repairs, and to prevent fingers from slipping into the forks of the pliers during use, thus avoiding finger pinching. In mass production, to improve installation efficiency, the elongated holes inside the pliers handles utilize a straight-line insertion and pull-out principle. The inner neck of the elongated hole is large, gradually decreasing in size towards the inside. The elongated holes inside the pliers handles are approximately rectangular pyramidal in shape, facilitating installation on the smooth handles of the pliers.

[0003] Currently, the assembly of pliers handles on the market is often done manually. Due to limited human strength, in order to easily fit the pliers handles onto the bare handles, the rectangular conical hole inside the handles needs to be enlarged. The consequence of this design is that the fitted handles are prone to loosening. To solve the loosening problem, glue is added before fitting the handles. Over time, adding glue has become a process, making it impossible to clean the floor and making the workshop look dirty and messy.

[0004] The following patents / patent applications were found through the search:

[0005] 1. Chinese Patent Application No.: 202010392090.9, Application Date: 2020-05-11, "An Automatic Pliers Handle Loosening Machine" discloses an automatic pliers handle loosening machine, including a limiting pressure plate, a cylinder, a turntable, and a chassis. A servo motor is installed inside the chassis, and the turntable is mounted on the output end of the servo motor. Fixed arms are evenly welded to the top of the turntable, and a main shaft is welded to the middle of the top of the turntable. Cylinders are evenly fixed on the main shaft, and a support plate is welded to the top of the fixed arms. This invention, by installing a servo motor, a sound-absorbing shell, a turntable, guide blocks, and guide grooves, allows the device to rotate the turntable when the servo motor is activated, enabling processing operations at different workstations. Simultaneously, when the turntable moves, the guide blocks at its bottom slide inside the guide grooves. This sliding connection structure between the guide blocks and guide grooves improves the stability of the turntable during operation, preventing tipping. Furthermore, the sound-absorbing shell, its vacuum pre-reserved cavity, and sound-absorbing mineral wool provide good noise reduction.

[0006] 2. Application No.: 202121361348.5 Application Date: 2021-06-18, an automatic handle-feeding machine for water pump pliers, specifically relating to the field of mechanical manufacturing, describes a process of feeding the handle using pneumatic components fixed on the main frame: the handle is sent to the lower end of the handle fixing frame, the handle fixing frame is flipped downward by the pneumatic components, the handle fixing frame is flipped to the bottom to lock the handle, after locking, the handle is flipped inward again to flip the handle inside, after the flipping is completed, the pliers are locked by the movement of the sliding table of the handle fixing frame, and the handle is pushed into the pliers body by the movement of the sliding table again.

[0007] Analysis revealed that all of the above structures have certain limitations, and are complex, costly, and generally unreliable.

[0008] The applicant designed a contouring mechanism for installing pliers handles, which prevents glue from being left on the workbench in every factory's handle-mounting workshop. This mechanism allows for a smaller conical hole inside the pliers handle, resulting in a tighter fit between the handle and the pliers, and also increases the insulation thickness of the handle. Simultaneously, it eliminates the need for traditional glue application, making the workshop more environmentally friendly and hygienic, with a simple and reliable structure. Summary of the Invention

[0009] The purpose of this invention is to provide a contouring mechanism for installing pliers handles. This mechanism features a simple structure and reasonable design, eliminating the need for traditional glue application and the traditional process of heating and softening the handle in an electric oven. It also eliminates the safety risks associated with electric heating, making production safer and more energy-efficient. Furthermore, it makes the workshop safer, more environmentally friendly, and more hygienic, while saving labor costs and improving processing efficiency, thus solving the problems mentioned in the background.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A contouring mechanism for installing pliers handles includes an upper pressure mechanism and a lower pressure mechanism at the upper and lower ends of a base chassis. The base chassis also includes a handle pressing mechanism for pressing the pliers handle into the pliers shank. This handle pressing mechanism consists of two symmetrically arranged handle pressing components. Each component includes a first linear slide rail fixedly mounted on the base chassis, a first slider slidably mounted on the first linear slide rail, a contouring follower plate fixedly mounted on the first slider, a first cylinder fixedly mounted on the contouring follower plate, and a handle angle adjusting plate connected to the output end of the first cylinder via a connecting plate. A second slide rail is provided on the handle angle adjusting plate, a second slider slidably mounted on the second slide rail, and a handle positioning mold fixedly mounted on the upper surface of the second slider. The handle positioning mold contacts and connects with the pliers handle.

[0012] The adjusting plate is equipped with a second linear slide rail, on which the movable mold of the lug stop for the handle neck is fixed. When the movable mold is closed, the position and direction of the handle remain fixed. When changing to different types of pliers, only the mold needs to be replaced.

[0013] Preferably, the contouring mechanism has a hole for placing the handle of the pliers.

[0014] Preferably, the upper pressure mechanism includes an upper pressure cylinder, a stress eliminator, and a jaw fixing plate, wherein the output end of the upper pressure cylinder is connected to the upper end face of the jaw fixing plate, the stress eliminator is disposed on the output end of the upper pressure cylinder, and a jaw is fixedly installed on the lower end face of the jaw fixing plate, the jaw matching the head of the pliers handle.

[0015] Preferably, the pressure mechanism includes a pressure cylinder, a support plate, and a rubber handle bottom mold, wherein the output end of the pressure cylinder is fixedly connected to the lower end face of the support plate, a third slide rail is fixedly installed on the upper end face of the support plate, a third slider is slidably arranged on the third slide rail, the rubber handle bottom mold is fixedly installed on the third slider, and a groove adapted to the rubber handle of the pliers is opened on the rubber handle bottom mold.

[0016] Preferably, the bottom mold of the rubber handle is further provided with a first drive cylinder that drives it to move along the length direction of the third slide rail.

[0017] Preferably, the glue handle pressing assembly further includes a support clamp plate, the upper and lower end faces of which are respectively in contact with the glue handle angle adjustment plate and the contour following plate, and the support clamp plate is in the shape of an inverted U, with the U-shaped notch of the inverted U gradually increasing from bottom to top.

[0018] Preferably, one end of the contour following plate is provided with a second cylinder that drives it to move along the length direction of the first linear slide rail, and the rubber handle positioning mold is provided with a second driving cylinder that drives it to move along the length direction of the second slide rail.

[0019] This invention discloses another solution:

[0020] A pliers handle installation machine includes a aforementioned pliers handle installation contouring mechanism, wherein the chassis of the contouring mechanism is a turntable mechanism, and multiple sets of the contouring mechanism are arranged in four positions of the turntable mechanism, with each station performing different operations.

[0021] This invention discloses a new method and approach for assembling pliers handles:

[0022] An installation method for installing pliers handles includes a conforming mechanism as described above. The method involves fixing the handle and aligning the pliers handle with the fixed handle and pressing it. During the pressing process, a conforming motion is performed to tighten and fix the pliers handle according to the different sizes of the pliers handle and the corresponding pliers handle.

[0023] The traditional approach involves fitting the pliers handle onto the pliers shank. This method uses a reverse approach: fixing the pliers handle and then forcefully fitting the pliers shank onto the pliers handle. This method is more efficient and reliable, has a simple structure, and high production efficiency.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. This invention provides a contouring mechanism for installing pliers handles. The mechanism includes an upper pressure mechanism and a lower pressure mechanism at both ends, and a handle-pressing mechanism to press the pliers handle into the smooth pliers handle. The upper pressure mechanism, lower pressure mechanism, and handle-pressing mechanism work together to complete the fitting of the pliers handle. Because the force is adjustable, the rectangular conical hole inside the handle can be reduced, allowing for a tight fit between the handle and the smooth pliers handle. This eliminates the need for traditional glue application, making the workshop more environmentally friendly and hygienic, while also saving labor costs and improving processing efficiency. It is worthy of widespread promotion and application.

[0026] 2. The upper pressure mechanism of the contouring mechanism is equipped with a stress eliminator, which can effectively eliminate the stress generated by the deformation of the rubber handle during the assembly process. This method can replace the traditional process of heating the rubber handle with an electric oven to soften the rubber handle and achieve stress relief. This method can eliminate the safety risks brought by electric heating, improve production safety, and save energy.

[0027] 3. The contouring mechanism in this invention works in conjunction with the side arc shape of the pliers handle. It relies on the simultaneous action of the upper pressure cylinder and the contouring follow-up cylinder to perform circular interpolation motion to complete the contouring of the pliers handle and insert the pliers handle into the plastic handle. It is suitable for various curved pliers (such as wire cutters, needle-nose pliers, and diagonal pliers).

[0028] 4. The contouring mechanism uses mold positioning, which can keep the direction and position of the handle fixed after it is fitted, making the pliers look uniform and beautiful.

[0029] 5. This contouring mechanism uses the weight of the clamps to drop the material onto the conveyor belt, achieving automatic unloading.

[0030] 6. This contouring mechanism can be customized to meet the manufacturer's production needs: ① By replacing the turntable with a sliding plate, a two-station sliding plate machine can be made. The contouring mechanism is fixed to an iron plate that can slide back and forth. The rear station is used for placing the rubber handle and unloading, while the front station is used for pressing and attaching the pliers handle (see...). Figure 6 ).

[0031] ② It can be made into a rotary table machine with three or more stations, with the copying mechanism installed at several stations on the rotary table. Alternatively, a servo motor combined with a lead screw drive can be used to replace the cylinder drive of the copying mechanism, making it a CNC sleeve-handling machine. Attached Figure Description

[0032] Figure 1 This is a cross-sectional view of the contouring mechanism of the present invention;

[0033] Figure 2 This is a structural diagram of the pressure mechanism of the present invention;

[0034] Figure 3 This is a structural diagram of the lower pressure mechanism of the present invention;

[0035] Figure 4 This is a structural diagram of the adhesive handle pressing assembly of the present invention;

[0036] Figure 5 This is a top view of the contouring mechanism of the present invention installed on the sleeve machine.

[0037] Figure 6 This is a top view of another contouring mechanism of the present invention installed on a sleeve-handling machine.

[0038] The reference numerals and names in the figure are as follows:

[0039] 1. Chassis; 2. Upper pressure mechanism; 21. Upper pressure cylinder; 22. Stress reliever; 23. Jaw fixing plate; 24. Jaw; 3. Lower pressure mechanism; 31. Lower pressing cylinder; 32. Support plate; 33. Rubber handle bottom mold; 34. Third slide rail; 35. Third slider; 36. Groove; 4. Pliers handle; 5. Pliers smooth handle; 6. Rubber handle pressing mechanism; 61. First linear slide rail; 62. First slider; 63. Contouring follower plate; 64. First cylinder; 65. Connecting plate; 66. Rubber handle angle adjustment plate; 67. Second slide rail; 68. Second slider; 69. Rubber handle positioning mold; 610. Support clamping plate; 611. Second cylinder; 7. Hole; 8. Feeding station; 9. Front pressing station; 10. Rear pressing station; 11. Unloading station. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0043] Please see Figure 1 The present invention provides an embodiment of a contouring mechanism for installing pliers handles. The contouring mechanism includes a base 1, an upper pressure mechanism 2 and a lower pressure mechanism 3 respectively provided at the upper and lower ends of the base 1, and a handle pressing mechanism 6 provided on the base 1 for pressing the pliers handle 4 into the pliers handle 5. The handle pressing mechanism 6 is composed of two symmetrically arranged handle pressing components. The base 1 also has holes 7 for placing the pliers handle 5.

[0044] Please see Figure 2 The upper pressure mechanism 2 in the figure includes an upper pressure cylinder 21, a stress eliminator 22, and a jaw fixing plate 23. The output end of the upper pressure cylinder 21 is connected to the upper end face of the jaw fixing plate 23. The stress eliminator 22 is set on the output end of the upper pressure cylinder 21. A jaw 24 is fixedly installed on the lower end face of the jaw fixing plate 23. The jaw 24 matches the head of the pliers handle 5 mentioned above.

[0045] Please see Figure 3 The downward pressure mechanism 3 in the figure includes a downward pressure cylinder 31, a support plate 32, and a rubber handle bottom mold 33. The output end of the downward pressure cylinder 31 is fixedly connected to the lower end face of the support plate 32. A third slide rail 34 is fixedly installed on the upper end face of the support plate 32. A third slider 35 is slidably arranged on the third slide rail 34. The rubber handle bottom mold 33 is fixedly installed on the third slider 35. A groove 36 adapted to the rubber handle 4 of the pliers is opened on the rubber handle bottom mold 33. A first drive cylinder (not shown in the figure) is also provided on the rubber handle bottom mold 33 to drive it to move along the length direction of the third slide rail 34.

[0046] Please see Figure 4The rubber handle pressing assembly shown in the figure includes a first linear slide rail 61 fixedly mounted on the aforementioned chassis 1. A first slider 62 is slidably mounted on the first linear slide rail 61. A contour following plate 63 is fixedly mounted on the first slider 62. A first cylinder 64 is fixedly mounted on the contour following plate 63. The output end of the first cylinder 64 is connected to a rubber handle angle adjusting plate 66 via a connecting plate 65. A second slide rail 67 is provided on the rubber handle angle adjusting plate 66. A second slider 68 is slidably mounted on the second slide rail 67. A rubber handle positioning mold 69 is fixedly mounted on the upper end face of the second slider 68. 9 is in contact with the aforementioned pliers handle 4, and the handle positioning mold 69 is provided with a second driving cylinder (not shown in the figure) that drives it to move along the length direction of the second slide rail 67. One end of the contour following plate 63 is provided with a second cylinder 611 that drives it to move along the length direction of the first linear slide rail 61. The handle pressing assembly also includes a support clamping plate 610. The upper and lower end faces of the support clamping plate 610 are in contact with the handle angle adjusting plate 66 and the contour following plate 63, respectively. The support clamping plate 610 is in an inverted U shape, and the U-shaped notch of the inverted U shape gradually increases from bottom to top.

[0047] For specific usage, please refer to Figures 1 to 5 A tooling machine for installing pliers handles includes a aforementioned contouring mechanism for installing pliers handles. The chassis of the contouring mechanism is a turntable mechanism, and multiple sets of the contouring mechanism are arranged in four positions on the turntable mechanism, with each station performing a different operation. Here, the chassis 1 adopts the form of a turntable mechanism to facilitate multi-station operation. In this invention, the clamping machine operates by first installing two sets of contouring mechanisms at the feeding station 8, the front clamping station 9, the rear clamping station 10, and the unloading station 11. This allows for simultaneous processing of two clamps, thereby improving processing efficiency. The feeding station 8, the front clamping station 9, the rear clamping station 10, and the unloading station 11 rotate with the chassis 1. The feeding station 8 is used to place the clamp's rubber handle 4 and the clamp's smooth handle 5. The front clamping station 9 and the rear clamping station 10 are used to press the clamp's rubber handle 4, respectively completing the clamping stroke of the front and rear arcs of the clamp's rubber handle 4. The unloading station 11 is used for… For automatic unloading, when the contouring mechanism is working, the pliers handle 4 is placed in the groove 36 of the lower pressure mechanism 3. The position of the pliers handle 4 can be moved and adjusted by the first drive cylinder driving the handle bottom mold 33. The pliers smooth handle 5 is fixed by the contouring follow plate 63 on the handle pressing mechanism 6. When the pliers handle 4 reaches directly below the handle 5, the upper pressure mechanism 2 and the lower pressure mechanism 3 cooperate to press the handle 5 into the pliers handle 4 once. Then, the handle angle adjustment plate 63 on the handle pressing mechanism 6 cooperates with the handle positioning mold 69 to put the pliers handle 4 onto the handle 5 a second time, realizing automated assembly.

[0048] Additionally, see Figure 6 , Figure 6 This is a top view of another contouring mechanism of the present invention installed on a sleeve-handling machine. In this invention, turntable 1 is replaced with... Figure 6 The skateboard in the machine can be made into a two-station skateboard machine. The contouring mechanism is fixed on an iron plate that can slide back and forth. The rear station is used to place the rubber handle and unload the material (feeding station 8), and the front station is used to press and install the pliers handle (front pressing station 9).

[0049] This invention discloses a new method and approach for assembling pliers handles:

[0050] An installation method for installing pliers handles includes a contouring mechanism as described above. The method involves fixing the handle and then aligning the pliers shank with the fixed handle and pressing it. During the pressing process, a contouring motion is performed to tighten and secure the pliers handle, depending on the size of the pliers handle and the corresponding pliers shank. For specific usage instructions, please refer to the above description.

[0051] The traditional approach involves fitting the pliers handle onto the pliers shank. This method uses a reverse approach: fixing the pliers handle and then forcefully fitting the pliers shank onto the pliers handle. This method is more efficient and reliable, has a simple structure, and high production efficiency.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A contouring mechanism for installing a pliers handle, characterized in that: The base (1) is provided with an upper pressure mechanism (2) and a lower pressure mechanism (3) at its upper and lower ends, respectively. The base (1) is also provided with a pliers handle pressing mechanism (6) for pressing the pliers handle (4) into the pliers handle (5). The pliers handle pressing mechanism (6) consists of two symmetrically arranged pliers handle pressing components. Each pliers handle pressing component includes a first linear slide rail (61) fixedly installed on the base (1). A first slider (62) is slidably arranged on the first linear slide rail (61). A first slider (62) is fixedly mounted on the first slider (62). The device is equipped with a contour-following plate (63), on which a first cylinder (64) is fixedly mounted. The output end of the first cylinder (64) is connected to a handle angle adjustment plate (66) via a connecting plate (65). A second slide rail (67) is provided on the handle angle adjustment plate (66), and a second slider (68) is slidably mounted on the second slide rail (67). A handle positioning mold (69) is fixedly mounted on the upper end face of the second slider (68), and the handle positioning mold (69) is in contact with the handle of the pliers (4). The rubber handle pressing assembly also includes a support clamp (610). The upper and lower end faces of the support clamp (610) are respectively in contact with the rubber handle angle adjustment plate (66) and the contour following plate (63). The support clamp (610) is in the shape of an inverted U, and the U-shaped notch of the inverted U gradually increases from bottom to top. The chassis (1) has a hole (7) for placing the pliers handle (5).

2. The contouring mechanism for installing pliers handles according to claim 1, characterized in that: The upper pressure mechanism (2) includes an upper pressure cylinder (21), a stress eliminator (22), and a jaw fixing plate (23). The output end of the upper pressure cylinder (21) is connected to the upper end face of the jaw fixing plate (23). The stress eliminator (22) is set on the output end of the upper pressure cylinder (21). A jaw (24) is fixedly installed on the lower end face of the jaw fixing plate (23). The jaw (24) matches the head of the pliers handle (5).

3. The contouring mechanism for installing pliers handles according to claim 1, characterized in that: The pressure mechanism (3) includes a pressure cylinder (31), a support plate (32), and a rubber handle bottom mold (33). The output end of the pressure cylinder (31) is fixedly connected to the lower end face of the support plate (32). A third slide rail (34) is fixedly installed on the upper end face of the support plate (32). A third slider (35) is slidably arranged on the third slide rail (34). The rubber handle bottom mold (33) is fixedly installed on the third slider (35), and a groove (36) adapted to the rubber handle (4) of the pliers is opened on the rubber handle bottom mold (33).

4. The contouring mechanism for installing pliers handles according to claim 3, characterized in that: The bottom mold (33) of the rubber handle is also provided with a first drive cylinder that drives it to move along the length direction of the third slide rail (34).

5. A contouring mechanism for installing a pliers handle according to claim 1, characterized in that: One end of the contour following plate (63) is provided with a second cylinder (611) that drives it to move along the length direction of the first linear slide rail (61), and the rubber handle positioning mold (69) is provided with a second driving cylinder that drives it to move along the length direction of the second slide rail (67).

6. A pliers handle attaching machine, characterized in that, It includes a contouring mechanism for installing pliers handles as described in any one of claims 1-5, wherein the chassis of the contouring mechanism is a turntable mechanism, and multiple sets of the contouring mechanism are arranged in the four directions of the turntable mechanism, with each station performing different operations.

7. A method for installing a pliers handle, characterized in that, It employs a contouring mechanism for installing pliers handles as described in any one of claims 1-5. The handle installation method involves fixing the handle and aligning the pliers handle with the fixed handle for compression. During compression, the mechanism performs contouring motion to tighten and fix the pliers handle according to the different sizes of the pliers handle and the corresponding pliers handle.

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