A micro-adjustable T-shaped wrench

Abstract

The application discloses a fine adjustment T-shaped wrench with a rotatable angle, which comprises a handle, a switch, a fixed rotating disc, a T-shaped rod, a scale rotating disc, a fastening assembly and a pointer, wherein the scale rotating disc, the fixed rotating disc and the handle are sequentially arranged from top to bottom, and the scale rotating disc, the fixed rotating disc and the handle are respectively provided with through holes for the T-shaped rod to pass through; the T-shaped rod comprises a horizontal rod and a vertical rod, one end of the vertical rod is connected with the horizontal rod, and the other end of the vertical rod is exposed outside the handle after sequentially passing through the through holes of the scale rotating disc, the fixed rotating disc and the handle; the pointer is installed on the fixed rotating disc; a groove is formed in the outer edge of the scale rotating disc along the circumference of the scale rotating disc, and standard circumferential scales are uniformly marked in the groove; the tip of the pointer is clamped in the groove to position a specific circumferential scale value, and the rotation angle is observed by the rotation of the scale rotating disc relative to the fixed rotating disc. The application can set the rotation angle in advance, and the wrench is locked by the fastening assembly when the wrench is rotated to the set angle.

Description

Technical Field

[0001] This invention belongs to the field of wrench technology, specifically relating to a fine-tuning T-type wrench with an adjustable rotation angle. Background Technology

[0002] A T-wrench is a common tool for installing and removing fasteners. Compared to a traditional wrench, the torque point of a T-wrench is far from the plane of the fastener, thus enabling it to achieve a long lever arm and act on fasteners with deeper embedment points.

[0003] A common T-wrench extends the wrench using a T-shaped metal rod. However, in high-end manufacturing, especially in cigarette manufacturing, due to the need for working precision and mechanical stability, some special hexagonal screws and nuts are used to adjust flow and the distance between the front and rear of the device. Therefore, it is often necessary to determine the specific angle of rotation of the T-wrench.

[0004] like Figure 1 As shown, in the aluminum foil cutting device of the YB48 hard box packaging machine, cutter 1.1 cuts the long side of the aluminum foil during rotation, and cutter 1.2 cuts the aluminum foil tear strips during rotation. Both cutters are fixed in the blade groove by friction through three lateral screws 1.3. Long grooves are designed at the three locking positions of both cutters to facilitate the movement of the cutters during adjustment. Due to wear or loosening of the blades caused by long-term operation, the cutters often produce incomplete cuts and burrs at the edges. Therefore, fine adjustments to the cutting position are required. Adjusting the cutter position is done by rotating the set screw 1.4, which has an O-ring and a self-locking function. After rotating, screw 1.4 moves inward, overcoming the friction of the locking screw 1.3 and pushing the cutter upward.

[0005] Currently, adjusting the rotation angle relies on experienced workers estimating and repeatedly trying to adjust the blade position, with an accuracy on the order of 0.01 microns. Simply relying on pitch × number of turns to determine the set screw feed depth cannot meet high-precision requirements. Therefore, a T-wrench capable of finely adjusting the rotation angle is needed to meet the demands of high-precision adjustment. Summary of the Invention

[0006] To address the technical problem that existing technologies, which rely on manual methods to determine the feed depth of the set screw by pitch × number of turns, cannot meet the requirements for high precision, this invention provides a fine-tuning T-type wrench with a set rotation angle. The rotation angle can be set in advance, and the setting of the rotation angle is achieved by pressing a switch to retract the fastening pin. When the T-shaped rod and the scale dial rotate to the set angle, the fastening pin falls into the pin hole to lock the rotating pair.

[0007] The technical solution adopted in this invention is:

[0008] A fine-tuning T-shaped wrench with adjustable rotation angle is characterized by comprising a handle, a switch, a fixed turntable, a T-shaped rod, a scale turntable, a fastening assembly, and a pointer. The scale turntable, fixed turntable, and handle are arranged sequentially from top to bottom, and each of the scale turntable, fixed turntable, and handle has a through hole for the T-shaped rod to pass through. The T-shaped rod includes a horizontal bar and a vertical bar. One end of the vertical bar is connected to the horizontal bar, and the other end passes through the through holes on the scale turntable, fixed turntable, and handle in sequence, and then protrudes outside the handle. The pointer is mounted on the fixed turntable. The outer edge of the scale turntable has a groove along its circumference, and standard circumferential graduations are evenly marked in the groove. The tip of the pointer is engaged in the groove to locate a specific circumferential graduation value. The rotation angle is observed by rotating the scale turntable relative to the fixed turntable.

[0009] The fastening assembly includes a fastening pin, a spring plate, and a push rod. One end of the push rod is vertically mounted on the spring plate, and the other end is fitted with the switch. The fastening pin is located at one end of the spring plate, and the other end of the spring plate is fixed to the inner cavity of the handle. The scale dial has a first pin hole parallel to and penetrating the central axis of the scale dial, and the fixed dial has a second pin hole parallel to and penetrating the central axis of the fixed dial. The end of the fastening pin is inserted into the second pin hole, at which point the spring plate is in a compressed state. The rotation of the T-shaped rod drives the scale dial to rotate. When the first pin hole on the scale dial rotates to coincide with the zero mark of the circumferential scale, pressing the switch drives the push rod to deform and bend the spring plate, causing the fastening pin to move axially. The spring plate releases its elastic potential energy, and the fastening pin falls into the first pin hole to lock the T-shaped rod. At this point, the spring plate is in its natural state.

[0010] Furthermore, the vertical rod is rigidly connected to the scale dial, and the fixed dial is rigidly connected to the handle.

[0011] Furthermore, sliding bearings are installed at both ends of the grip. The inner journals of the two sliding bearings are connected to the vertical rod through a clearance fit. The outer bushings of the two sliding bearings are fixed on the grip. The T-shaped rod can rotate on the grip through the sliding bearings without axial movement.

[0012] Furthermore, the vertical rod and the scale dial are rigidly connected by a fastening end cap.

[0013] Furthermore, it also includes a limiting damper, which is installed at the end of the grip. The vertical rod has a shoulder for axially fixing the limiting damper at the installation position of the limiting damper. By rotating to control the distance between the limiting damper and the outer side of the T-shaped rod, the rotational damping of the T-shaped rod in the unloaded state can be controlled to avoid deviation of the rotation angle.

[0014] Furthermore, a replacement head is provided at the other end of the vertical rod, which enables the installation and removal of fasteners of different types and specifications.

[0015] Compared with the prior art, the beneficial effects of the present invention are reflected in:

[0016] 1. The present invention allows for the pre-setting of rotation angle by setting a fastening component. By pressing the switch, the push rod can be driven to deform and bend the spring plate, thereby driving the fastening pin to achieve axial movement.

[0017] 2. In this invention, the scale dial rotates along with the T-shaped rod. When the first pin hole on the scale dial coincides with the zero mark as it rotates, the spring plate releases its elastic potential energy, causing the fastening pin to fall into the first pin hole, thus locking the rotation of the T-shaped rod. At this time, the spring plate is in its natural state.

[0018] 3. This invention enables the installation and removal of fasteners of different types and specifications by replacing the replacement head.

[0019] 4. The present invention uses a limiting damper to fix the handle in the axial position of the T-shaped rod. The limiting damper controls the unloaded rotation damping of the T-shaped rod by rotation, so as to prevent the rotation angle from deviating due to the loosening of internal parts such as the T-shaped rod after the T-shaped wrench is determined and adjusted. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the aluminum foil cutting device of the existing YB48 hard box packaging machine.

[0021] Figure 2 This is a schematic diagram of the overall structure of the fine-tuning T-shaped wrench with adjustable rotation angle according to the present invention.

[0022] Figure 3 This is a schematic diagram of the fastening component structure of the present invention.

[0023] Figure 4 This is a partial schematic diagram of the internal structure of the present invention. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0026] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0027] refer to Figure 2 , Figure 3 and Figure 4 This invention discloses a fine-tuning T-shaped wrench with adjustable rotation angle, comprising a handle 2, a switch 3, a fixed turntable 4, a T-shaped rod 6, a scale turntable 7, a fastening assembly 8, and a pointer 9. The scale turntable 7, the fixed turntable 4, and the handle 2 are arranged sequentially from top to bottom, and each of the scale turntable 7, the fixed turntable 4, and the handle 2 has through holes for the T-shaped rod 6 to pass through. The T-shaped rod 6 includes a horizontal bar and a vertical bar. One end of the vertical bar is connected to the horizontal bar, and the other end passes through the through holes on the scale turntable 7, the fixed turntable 4, and the handle 2, and protrudes outside the handle 2. The pointer 9 is mounted on the fixed turntable 4. The outer edge of the scale turntable 7 has a groove along its circumference, and standard circumferential graduations are evenly marked in the groove. The tip of the pointer 9 is engaged in the groove to locate a specific circumferential graduation value. The rotation angle is observed by rotating the scale turntable 7 relative to the fixed turntable 4.

[0028] The fastening assembly includes a fastening pin 81, a spring plate 82, and a push rod 83. One end of the push rod 83 is vertically mounted on the spring plate 82, and the other end is fitted with the switch 3. The fastening pin 81 is located at one end of the spring plate 82, and the other end of the spring plate 82 is fixed to the inner cavity of the handle 2. The scale dial 7 has a first pin hole that is parallel to the central axis of the scale dial 7 and penetrates the scale dial 7. The fixed dial 4 has a second pin hole that is parallel to the central axis of the fixed dial 4 and penetrates the fixed dial 4. The end of the fastening pin 81 is inserted into the second pin hole, at which time the spring plate 82 is in a compressed state; the T-shaped rod 6 rotates to drive the scale dial 7 to rotate. When the first pin hole on the scale dial 7 rotates to coincide with the zero mark of the circumferential scale, the push switch 3 drives the push rod 83 to deform and bend the spring plate 82, thereby driving the fastening pin 81 to achieve axial movement. The spring plate 82 releases its elastic potential energy, and the fastening pin 81 falls into the first pin hole to lock the T-shaped rod 6. At this time, the spring plate 82 is in a natural state.

[0029] In one embodiment, the vertical rod is rigidly connected to the scale dial 7, and the fixed dial 4 is rigidly connected to the handle 2.

[0030] In one embodiment, sliding bearings are installed at both ends of the grip 2. The inner journals of the two sliding bearings are connected to the vertical rod through a clearance fit. The outer bearing shells of the two sliding bearings are fixed on the grip 2. The T-shaped rod 6 can rotate on the grip 2 through the sliding bearings without axial movement.

[0031] In one embodiment, the vertical rod and the scale dial 7 are rigidly connected by a fastening end cap 5.

[0032] In one embodiment, a limiting damper 10 is also included. The limiting damper 10 is installed at the end of the handle 2. The vertical rod is provided with a shoulder for axially fixing the limiting damper 10 at the installation position of the limiting damper 10. By rotating to control the distance between the limiting damper 10 and the outer side of the T-shaped rod 6, the rotational damping of the T-shaped rod 6 in the unloaded state is controlled to avoid deviation of the rotation angle.

[0033] In one embodiment, a replacement head 1 is provided at the other end of the vertical rod, which enables the installation and removal of fasteners of different types and specifications.

[0034] like Figure 3 , Figure 4 As shown, specifically, the fastening pin 81 in this invention is connected to the spring plate 822 by a rivet, and the switch 3 is connected to the spring plate 82 by a push rod 83. By pressing the switch 3, the push rod 833 can be driven to deform and bend the spring plate 82, thereby driving the fastening pin 81 to move axially, thereby controlling the relative rotation of the fixed turntable 4 and the scale turntable 7.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A micro-adjustable T-handle that can set a rotation angle, characterized by, The utility model relates to a kind of rotary angle observation device, including handle, switch, fixed rotating disc, T-shaped rod, scale rotating disc, fastening assembly and pointer, the scale rotating disc, fixed rotating disc, handle are sequentially arranged from top to bottom, and the scale rotating disc, fixed rotating disc and handle are respectively set with the through hole for the T-shaped rod to pass through;The T-shaped rod includes crossbar and vertical rod, one end of the vertical rod is connected with the crossbar, the other end sequentially passes through the through hole on the scale rotating disc, fixed rotating disc and handle and is exposed outside handle;The pointer is installed on the fixed rotating disc;The outer edge of the scale rotating disc is provided with a groove along the circumference of the scale rotating disc, and the groove is uniformly marked with standard circumferential scale, the tip of the pointer is clamped in the groove, and the specific circumferential scale value is positioned, and the rotation angle is observed by the rotation of the scale rotating disc relative to the fixed rotating disc. The fastening assembly includes a fastening pin, a spring leaf, and a top rod. One end of the top rod is perpendicularly installed on the spring leaf, and the other end is installed with the switch. The fastening pin is arranged at one end of the spring leaf, and the other end of the spring leaf is fixedly arranged in the inner cavity of the handle. A first pin hole parallel to the center axis of the scale rotating disc and penetrating the scale rotating disc is arranged on the scale rotating disc, and a second pin hole parallel to the center axis of the fixed rotating disc and penetrating the fixed rotating disc is arranged on the fixed rotating disc. The end of the fastening pin is inserted into the second pin hole, and at this time, the spring leaf is in a compressed state. The T-shaped rod rotates to drive the scale rotating disc to rotate. When the first pin hole on the scale rotating disc rotates to coincide with the zero scale line of the circumferential scale, the spring leaf is deformed and bent by pressing the switch to drive the top rod, the fastening pin moves axially, the spring leaf releases the elastic potential energy, and the fastening pin falls into the first pin hole to lock the T-shaped rod. At this time, the spring leaf is in a natural state.

2. The adjustable angle fine tuning T-handle of claim 1, wherein, The vertical rod is rigidly connected with the scale rotating disc, and the fixed rotating disc is rigidly connected with the handle.

3. The adjustable angle fine tuning T-handle of claim 1, wherein, Both ends of the handle are installed with sliding bearings. The inner side journals of the two sliding bearings are connected with the vertical rod through a gap, and the outer side bushes of the two sliding bearings are fixed on the handle. The T-shaped rod rotates on the handle through the sliding bearings without axial movement.

4. The adjustable angle fine tuning T-handle of claim 1, wherein, The vertical rod and the scale rotating disc are rigidly connected through a fastening end cover.

5. The adjustable angle fine tuning T-handle of claim 1, wherein, A limiting damper is also included, which is installed at the end of the handle. An axial shoulder for axially fixing the limiting damper is arranged on the vertical rod at a position corresponding to the installation position of the limiting damper. The distance between the limiting damper and the outer side of the T-shaped rod is controlled by rotation to control the rotational damping of the T-shaped rod in the unloaded state, avoiding the deviation of the rotation angle.

6. The fine adjustment T-handle with settable rotation angle according to any one of claims 1 to 5, characterized in that An alternative head is arranged at the end of the other end of the vertical rod, which realizes the installation and disassembly of different types and specifications of fasteners.

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