Flat-position pin shaft and chain plate press-fitting tool for chain production and using method of flat-position pin shaft and chain plate press-fitting tool

Abstract

The invention discloses a flat-position pin shaft and chain plate press-fitting tool for chain production. The flat-position pin shaft and chain plate press-fitting tool comprises a tool frame composed of a bottom plate, a front plate, a rear plate and an upper plate. A press-fitting station is arranged above the upper plate, so that two pin shafts and a chain plate can be placed on the press-fitting station for press-fitting; a deviation correcting and locking mechanism is arranged on the right side in the tool frame and makes contact with the flat position parts of the two pin shafts, the flat position directions of the two pin shafts can be corrected to be consistent, and the two pin shafts are locked at the same time; an unlocking mechanism is arranged on the left side in the tool frame and is in linkage with the deviation rectifying and locking mechanism, so that the deviation rectifying and locking mechanism achieves automatic locking or unlocking of the two pin shafts under the linkage effect of the unlocking mechanism. According to the flat-position pin shaft for chain production and the chain plate press-fitting tool, the deviation rectifying and locking mechanism, the unlocking mechanism and the floating supporting plate are in a linkage relation, external power is not needed, deviation rectifying, locking and ejection actions can be achieved only through downward pressure of a press, and the whole press-fitting process is completed extremely ingeniously.

Description

Technical Field

[0001] The invention relates to the technical field of conveyor chains, and in particular to a flat pin shaft and chain plate pressing tool for chain production and a use method thereof. Background Art

[0002] Chain transmission is an important form of mechanical transmission. The transmission chain generally adopts a bushing roller chain, which is composed of inner link plates, outer link plates, bushings and rollers.

[0003] Among them, the pin shaft and the chain plate are interference fitted; in the assembly process, if Figure 1 As shown, two pins 100 are usually inserted into the mounting holes at both ends of the chain plate 200, and then the operator needs to use a hammer to knock the two pins 100 in turn so that the two pins 100 and the chain plate 200 have an interference fit, as shown in FIG. Figure 2 shown.

[0004] For the pin shaft 100 with a flattened design, the traditional assembly method is to use a hammer to knock. During multiple knocks, the pin shaft 100 will rotate in the mounting hole of the chain plate 200, resulting in inconsistent flattening directions of the two pin shafts 100, affecting subsequent further assembly.

[0005] Although there are some auxiliary tooling for assembly at present, the following problems still exist during the assembly process: first, the flattening direction of the pin shaft 100 cannot be restricted, resulting in the problem that the flattening directions of the two pin shafts 100 are inconsistent after assembly; second, due to the processing error of the pin shaft 100 and the chain plate 200, the pin shaft 100 will present an outward eight-shaped shape after being installed in the chain plate 200 (such as Figure 3 as shown) or inward-facing (as shown Figure 4 This will not only affect the difficulty of subsequent assembly, but also cause the assembled components to be stuck in the tooling and unable to be removed due to the deformation of the chain plate 200. Summary of the invention

[0006] The purpose of the present invention is to provide a flat pin shaft and chain plate press-fitting tool for chain production and a use method, so as to solve the defects of the existing flat pin shaft and chain plate assembly tool.

[0007] In order to solve the above technical problems, the present invention provides a flat pin shaft and chain plate press-fitting tool for chain production, comprising a tool frame composed of a bottom plate, a front plate, a rear plate and an upper plate; Above the upper plate is a press-fitting station, where two pins and a chain plate are placed for press-fitting; A deviation correction locking mechanism is provided on the right side of the tooling frame, which contacts the flattened parts of the two pins, can correct the flattened directions of the two pins to be consistent, and lock the two pins at the same time; An unlocking mechanism is provided on the left side of the tooling frame, and is linked with the deviation-correcting locking mechanism, so that the deviation-correcting locking mechanism realizes automatic locking or unlocking of two pin shafts under the linkage action of the unlocking mechanism.

[0008] Preferably, the deflection-correcting locking mechanism comprises a pressure plate and a deflection-correcting plate fixedly connected to the pressure plate; deflection-correcting parts are symmetrically provided on both sides of the deflection-correcting plate, and the two deflection-correcting parts correspond to the flat positions of two pin shafts respectively.

[0009] Preferably, a locking spring is provided on one side of the pressure plate, and the other end of the locking spring abuts against the front plate. Under the elastic force of the locking spring, the correction plate is pushed to correct and lock the flat position direction of the two pins; A sliding cylinder is provided on one side of the pressure plate away from the locking spring, and the sliding cylinder is slidably connected to the upper plate, so that the deviation correction locking mechanism can slide left and right along the sliding cylinder.

[0010] Preferably, the unlocking mechanism includes an unlocking movable plate and an unlocking spring; the unlocking movable plate is slidably installed in the rear plate, and the unlocking spring is located between the bottom end of the unlocking movable plate and the bottom plate, and the unlocking movable plate is pushed to slide up and down under the action of the unlocking spring.

[0011] Preferably, the top end of the unlocking movable plate protrudes out of the upper plate, and under the action of an external press, overcomes the elastic force of the unlocking spring and presses the unlocking movable plate downward.

[0012] Preferably, the deflection correcting plate is further provided with a roller, and the roller corresponds to the inclined surface of the unlocking movable plate; when the unlocking movable plate moves up and down, the roller rolls on the inclined surface, so that the deflection correcting locking mechanism moves left and right.

[0013] Preferably, the elastic force of the unlocking spring is greater than the elastic force of the locking spring.

[0014] Preferably, two V-shaped grooves are provided on one side of the upper plate in contact with the pin shaft, corresponding to the two pin shafts respectively; under the action of the correction plate, the pin shaft is pushed to rotate around the axis in the V-shaped groove until the flattening directions of the two pin shafts are corrected to be consistent.

[0015] Preferably, a floating support plate is further provided in the tooling frame to support the bottom end of the pin shaft, and floating springs are symmetrically provided on both sides of the floating support plate, which moves with the press-fitting of the pin shaft under the action of the floating springs.

[0016] The present invention also provides a method for using a flat pin shaft and a chain plate press-fitting tool for chain production, comprising the following steps: Step A: First, place the chain plate on the press-fitting station above the upper plate, and then insert the two pins into the pin holes at both ends of the chain plate until the bottom ends of the pins contact the floating support plate; Step B: Then the external press or punch can be started, and the lower punch first contacts the top of the unlocking movable plate and gradually moves downward; Step B1: While the unlocking movable plate is moving downward, the roller in the correction locking mechanism rolls along the inclined surface, and the correction plate moves to the left under the action of the locking spring, so that the correction parts on both sides of the correction plate gradually contact the flat parts of the two pins, and push the pins to rotate around the axis in the V-shaped groove until the flat directions of the two pins are corrected to be consistent, and the two pins are locked at the same time; Step B2: The lower pressure head gradually moves downward to press the two pins into the pin holes of the chain plate; during the pin press-fitting process, the floating support plate also compresses the floating spring under pressure and moves downward until the two pins are press-fitted; Step C: After the press-fitting is completed, the lower pressure head moves upward, and after the unlocking movable plate loses the downward pressure, it is pushed upward by the unlocking spring. At the same time, the inclined surface pushes the roller and the correcting plate to move to the right, so that the correcting parts on both sides of the correcting plate gradually move away from the flat parts of the two pins; Step D: After unlocking, the floating support plate moves upward under the action of the floating spring, thereby ejecting the pressed-in chain plate and pin shaft.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The flat pins and chain plate press-fitting tooling for chain production are equipped with a correction locking mechanism. Under the elastic force of the locking spring, the correction plate pushes the two pins to rotate around the axis in the corresponding V-groove until the flat directions of the two pins are corrected to be consistent, and the two pins are locked at the same time. The addition of the correction locking mechanism can automatically correct the flat directions of the two pins during the chain plate press-fitting process, thereby solving the problem of the chain plate being deformed due to inconsistent flat directions during the subsequent chain plate assembly, resulting in the assembled components being stuck in the tooling and unable to be removed; 2. The flat pin shaft for chain production and the correction locking mechanism, unlocking mechanism and floating support plate in the chain plate pressing tooling are linked, and no external power is required. The correction, locking and ejection actions can be achieved by only using the downward pressure of the press, completing the entire pressing process extremely cleverly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly of two pins and a chain plate provided by the present invention; Figure 2 It is a schematic diagram of the structure after the two pins and the chain plate provided by the present invention are pressed together; Figure 3 It is a schematic diagram of the outward-facing toe-shaped assembly provided by the present invention; Figure 4 It is a schematic diagram of the toe-shaped assembly provided by the present invention; Figure 5 It is a structural schematic diagram of a flat pin shaft and chain plate press-fitting tooling for chain production provided by the present invention; Figure 6 It is a cross-sectional view of the press-fitting tool provided by the present invention in the left and right directions; Figure 7 It is a structural schematic diagram of the deviation-correcting locking mechanism provided by the present invention; Figure 8 is a cross-sectional view of the press-fitting tool provided by the present invention in the front-rear direction; Fig. 9 It is a schematic diagram of the locking pin shaft of the correction plate and the upper plate provided by the present invention; Fig.10 The present invention is a schematic diagram of a process for correcting the flat position direction of the pin shaft between the deviation correction plate and the upper plate.

[0019] In the figure: 100, pin; 200, chain plate; 1, bottom plate; 2, front plate; 3, rear plate; 4, upper plate; 5, correction locking mechanism; 6, unlocking mechanism; 7, floating support plate; 8, floating spring; 501, pressure plate; 502, correction plate; 5021, correction part; 503, locking spring; 504, sliding cylinder; 505, roller; 601, unlocking movable plate; 602, unlocking spring; 603, inclined surface. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] In addition, the features, operations, and characteristics described in the specification can be combined in any appropriate manner to form various embodiments. Similarly, the steps or actions described in the method can also be adjusted in order in a manner that can be easily seen by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for the purpose of describing a certain embodiment, and are not necessarily such sequences, unless otherwise stated that a certain sequence must be followed.

[0024] Embodiment 1 The present invention provides a flat pin shaft and chain plate press fitting for chain production, please refer to Figure 5 and Figure 6 , including a tooling frame composed of a bottom plate 1, a front plate 2, a rear plate 3 and an upper plate 4; above the upper plate 4 is a press-fitting station, on which two pins 100 and a chain plate 200 are placed for press-fitting; a correction locking mechanism 5 is provided on the right side of the tooling frame, which contacts the flattened parts of the two pins 100 and can correct the flattened directions of the two pins 100 to be consistent, and lock the two pins 100 at the same time; an unlocking mechanism 6 is provided on the left side of the tooling frame, which is linked with the correction locking mechanism 5, so that the correction locking mechanism 5 can realize automatic locking or unlocking of the two pins 100 under the linkage action of the unlocking mechanism 6.

[0025] For details, please refer to Figure 7 The deflection correcting locking mechanism 5 includes a pressing plate 501 and a deflection correcting plate 502 fixedly connected to the pressing plate 501 ; deflection correcting portions 5021 are symmetrically provided on both sides of the deflection correcting plate 502 , and the two deflection correcting portions 5021 correspond to the flat positions of the two pin shafts 100 respectively.

[0026] Furthermore, a locking spring 503 is provided on one side of the pressure plate 501, and the other end of the locking spring 503 abuts against the front plate 2. Under the elastic force of the locking spring 503, the correction plate 502 is pushed to correct and lock the flat position direction of the two pin shafts 100; and a sliding cylinder 504 is provided on the side of the pressure plate 501 away from the locking spring 503, and the sliding cylinder 504 is slidably connected to the upper plate 4, so that the correction locking mechanism 5 can slide left and right along the sliding cylinder 504.

[0027] For details, please refer to Figure 2 The unlocking mechanism 6 includes an unlocking movable plate 601 and an unlocking spring 602; the unlocking movable plate 601 is slidably installed in the rear plate 3, and the unlocking spring 602 is located between the bottom end of the unlocking movable plate 601 and the bottom plate 1, and the unlocking movable plate 601 is pushed to slide up and down under the action of the unlocking spring 602.

[0028] The top end of the unlocking movable plate 601 protrudes out of the upper plate 4 , and under the action of an external press, first overcomes the elastic force of the unlocking spring 602 , and presses the unlocking movable plate 601 downward.

[0029] Furthermore, a roller 505 is provided on the correction plate 502, and the roller 505 corresponds to the inclined surface 603 of the unlocking movable plate 601; when the unlocking movable plate 601 moves up and down, the roller 505 rolls on the inclined surface 603, so that the correction locking mechanism 5 moves left and right.

[0030] Furthermore, the elastic force of the unlocking spring 602 is greater than the elastic force of the locking spring 503. In the absence of external force, the unlocking mechanism 6 can continuously keep the deviation-correcting locking mechanism 5 in an unlocked state.

[0031] For details, please refer to Fig. 9 The upper plate 4 has two V-shaped grooves 401 on one side in contact with the pin shaft 100, corresponding to the two pin shafts 100 respectively; under the action of the deviation correction plate 502, the pin shaft 100 is pushed to rotate around the axis in the V-shaped groove 401 until the flattening directions of the two pin shafts 100 are corrected to be consistent.

[0032] For details, please refer to Figure 8 A floating support plate 7 is also provided in the tooling frame to support the bottom end of the pin shaft 100 , and floating springs 8 are symmetrically provided on both sides of the floating support plate 7 , which move with the press-fitting of the pin shaft 100 under the action of the floating springs 8 .

[0033] Embodiment 2 The present invention also provides a method for using a flat pin shaft and a chain plate press-fitting tool for chain production, comprising the following steps: Step A: First, place the chain plate 200 on the press-fitting station above the upper plate 4, and then insert the two pins 100 into the pin holes at both ends of the chain plate 200, until the bottom ends of the pins 100 contact the floating support plate 7; Step B: Then the external press or punching machine can be started, and the lower pressing head first contacts the top of the unlocking movable plate 601 and gradually moves downward; Step B1: While the unlocking movable plate 601 is moving downward, the roller 505 in the correction locking mechanism 5 rolls along the inclined surface 603, and the correction plate 502 moves to the left under the action of the locking spring 503, so that the correction parts 5021 on both sides of the correction plate 502 gradually contact the flat parts of the two pins 100, and push the pins 100 to rotate around the axis in the V-shaped groove 401 until the flat directions of the two pins 100 are corrected to be consistent, and the two pins 100 are locked at the same time, as shown in FIG. Fig.10 As shown; Step B2: The lower pressing head gradually moves downward to press the two pins 100 into the pin holes of the chain plate 200; during the press-fitting process of the pins 100, the floating support plate 7 also compresses the floating spring 8 under pressure and moves downward until the press-fitting of the two pins 100 is completed; Step C: After the press-fitting is completed, the lower pressing head moves upward, and after the unlocking movable plate 601 loses the downward pressure, it is pushed upward by the unlocking spring 602, and at the same time, the inclined surface 603 pushes the roller 505 and the correcting plate 502 to move rightward, so that the correcting parts 5021 on both sides of the correcting plate 502 gradually move away from the flat parts of the two pin shafts 100; Step D: After unlocking, the floating support plate 7 moves upward under the action of the floating spring 8, thereby ejecting the pressed-fit chain plate 200 and the pin shaft 100.

[0034] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A flat pin and chain plate press-fitting tool for chain production, characterized in that: A tooling frame comprising a bottom plate (1), a front plate (2), a rear plate (3) and an upper plate (4); Above the upper plate (4) is a press-fitting station for placing two pin shafts (100) and a chain plate (200) at the press-fitting station for press-fitting; A deviation correction locking mechanism (5) is provided on the right side of the tooling frame, which contacts the flattened parts of the two pin shafts (100) and can correct the flattened directions of the two pin shafts (100) to be consistent, while locking the two pin shafts (100); An unlocking mechanism (6) is provided on the left side of the tooling frame and is linked to the deviation-correcting locking mechanism (5), so that the deviation-correcting locking mechanism (5) can realize automatic locking or unlocking of the two pin shafts (100) under the linkage action of the unlocking mechanism (6).

2. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 1, characterized in that: The deflection correction locking mechanism (5) comprises a pressing plate (501) and a deflection correction plate (502) fixedly connected to the pressing plate (501); deflection correction parts (5021) are symmetrically provided on both sides of the deflection correction plate (502), and the two deflection correction parts (5021) correspond to the flat positions of the two pin shafts (100) respectively.

3. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 2, characterized in that: A locking spring (503) is provided on one side of the pressure plate (501), and the other end of the locking spring (503) abuts against the front plate (2). Under the elastic force of the locking spring (503), the correction plate (502) is pushed to correct and lock the flat position direction of the two pin shafts (100); A sliding cylinder (504) is provided on the side of the pressure plate (501) away from the locking spring (503), and the sliding cylinder (504) is slidably connected to the upper plate (4), so that the deviation correction locking mechanism (5) can slide left and right along the sliding cylinder (504).

4. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 3, characterized in that: The unlocking mechanism (6) comprises an unlocking movable plate (601) and an unlocking spring (602); the unlocking movable plate (601) is slidably mounted in the rear plate (3), and the unlocking spring (602) is located between the bottom end of the unlocking movable plate (601) and the bottom plate (1), and is pushed to slide up and down by the action of the unlocking spring (602).

5. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 4, characterized in that: The top end of the unlocking movable plate (601) protrudes out of the upper plate (4), and under the action of an external press, overcomes the elastic force of the unlocking spring (602), pressing the unlocking movable plate (601) downward.

6. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 4, characterized in that: The deflection-correcting plate (502) is further provided with a roller (505), and the roller (505) corresponds to the inclined surface (603) of the unlocking movable plate (601); when the unlocking movable plate (601) moves up and down, the roller (505) rolls on the inclined surface (603), causing the deflection-correcting locking mechanism (5) to move left and right.

7. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 6, characterized in that: The elastic force of the unlocking spring (602) is greater than the elastic force of the locking spring (503).

8. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 2, characterized in that: The side of the upper plate (4) in contact with the pin shaft (100) is provided with two V-shaped grooves (401), which correspond to the two pin shafts (100) respectively; under the action of the deviation correction plate (502), the pin shaft (100) is pushed to rotate around the axis in the V-shaped groove (401) until the flattened directions of the two pin shafts (100) are corrected to be consistent.

9. A flat pin and chain plate press-fitting tool for chain production as claimed in claim 1, characterized in that: A floating support plate (7) is also provided in the tooling frame for supporting the bottom end of the pin shaft (100), and floating springs (8) are symmetrically provided on both sides of the floating support plate (7) so as to move with the press-fitting of the pin shaft (100) under the action of the floating springs (8).

10. A method for using a flat pin shaft and a chain plate press fitting for chain production, characterized in that: The steps include: Step A: firstly, place the chain plate (200) on the press-fitting station above the upper plate (4), and then insert the two pins (100) into the pin holes at both ends of the chain plate (200) respectively until the bottom ends of the pins (100) contact the floating support plate (7); Step B: Then, the external press or punching machine can be started, and the lower pressing head first contacts the top of the unlocking movable plate (601) and gradually moves downward; Step B1: while the unlocking movable plate (601) moves downward, the roller (505) in the correction locking mechanism (5) rolls along the inclined surface (603), and the correction plate (502) moves to the left under the action of the locking spring (503), so that the correction parts (5021) on both sides of the correction plate (502) gradually contact the flattened parts of the two pins (100), and push the pins (100) to rotate around the axis in the V-shaped groove (401), until the flattened directions of the two pins (100) are corrected to be consistent, and the two pins (100) are locked at the same time; Step B2: the lower pressing head gradually moves downward to press the two pins (100) into the pin holes of the chain plate (200); during the press-fitting process of the pins (100), the floating support plate (7) also compresses the floating spring (8) under pressure and moves downward until the press-fitting of the two pins (100) is completed; Step C: After the press-fitting is completed, the lower pressing head moves upward, and after the unlocking movable plate (601) loses the downward pressure, it is pushed upward by the action of the unlocking spring (602), and at the same time, the inclined surface (603) pushes the roller (505) and the deflection correcting plate (502) to move rightward, so that the deflection correcting parts (5021) on both sides of the deflection correcting plate (502) gradually move away from the flat parts of the two pin shafts (100); Step D: After unlocking, the floating support plate (7) moves upward under the action of the floating spring (8), thereby ejecting the pressed-fit chain plate (200) and the pin shaft (100).

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