A three-claw manipulator for claw machine

Abstract

The present invention discloses a three-claw manipulator for a claw machine, comprising a support frame, a cylinder is fixed on the top of the support frame, the end of the cylinder passes through the support frame, a gripping assembly is arranged between the end of the cylinder and the support frame, the gripping assembly comprises a movable plate fixed to the end of the cylinder, three evenly distributed U-shaped blocks are fixed at the bottom of the support frame, and upper claw arms are rotatably mounted on the three U-shaped blocks. The present invention relates to the field of manipulator technology. The three-claw manipulator for the claw machine can realize the position of the adjustment claw by pulling it arbitrarily, and the draw ring is released after the adjustment is completed, and the inhibition rod is driven to quickly reset under the action of the elastic force of the pressure spring, and the inhibition ratchet is locked in one direction. At this time, the push rod can be bent upward, and then the friction pad is contacted and squeezed with the friction layer by making the entire eccentric pressure roller squeeze the slide plate, thereby completing the rapid and stable locking of the adjustment claw position, and then conveniently controlling the extension length of the adjustment claw to be suitable for different scenes, and easy to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of manipulators, in particular to a three-claw manipulator for a claw machine. Background Art

[0002] The claw machine, also known as the cigarette grabbing machine, the claw machine, and the doll grabbing machine, is a toy that uses a three-claw manipulator to grab the things inside by inserting game coins. With the popularity of amusement equipment and entertainment facilities in shopping malls, a variety of claw machines have appeared on the market, which are placed in conspicuous locations in shopping malls and places with large traffic. This type of machine is highly playable, easy to manage, and has considerable revenue, and is favored by many businesses. The claw machines on the market are mainly equipped with plush dolls, and then the three-claw manipulator is driven by the crane inside the claw machine to grab the plush doll.

[0003] However, the three-claw manipulator used in existing claw machines has a relatively simple structure and is generally not convenient to adjust, which makes it inconvenient to use in different grasping scenarios. In addition, since the claw arm part of the three-claw manipulator mostly adopts an integrated design, it has poor applicability during use.

[0004] Therefore, the present invention proposes a three-claw robot for a claw machine to solve the above-mentioned problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a three-claw manipulator for a claw machine, which solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A three-claw manipulator for a claw machine, comprising a support frame, a cylinder is fixed above the support frame, an end of the cylinder passes through the support frame, and a grabbing assembly is arranged between the end of the cylinder and the support frame;

[0007] The grabbing assembly includes a movable plate fixed at the end of the cylinder, three evenly distributed U-shaped blocks are fixed at the bottom of the support frame, upper claw arms are rotatably installed on the three U-shaped blocks, three evenly distributed connecting blocks are rotatably installed on the outer periphery of the movable plate, adjacent connecting blocks are rotatably connected to the upper claw arms, lower claw arms are rotatably installed on the ends of the three upper claw arms through adjusting shafts, grooves are provided on the outer sides of the three lower claw arms, and adjusting claws are slidably installed on the outer sides of the grooves, an anti-rotation mechanism for locking or unlocking the adjusting shaft is provided between the upper claw arm and the adjusting shaft, and a one-way rotation positioning mechanism for positioning or unlocking the adjusting claw is provided between the adjusting claw and the groove.

[0008] Preferably, the one-way rotation positioning mechanism includes a accommodating box fixed to the outside of the adjusting claw, an eccentric pressure roller is rotatably installed inside the accommodating box via a rotating shaft, a push rod extending to the outside of the accommodating box is fixed to the surface of the eccentric pressure roller, a slide plate is slidably installed on the inner wall of the accommodating box, the slide plate is in contact with the eccentric pressure roller, a contact block is fixed to the side of the slide plate, a friction pad is fixed to the side of the contact block, a spring block is fixed to the inner wall of the accommodating box, a return spring is fixed between the spring block and the slide plate, a through groove connected to the accommodating box is provided on the inner side of the adjusting claw, a friction layer used in conjunction with the friction pad is provided on the groove, and an inhibition unit for limiting the reverse rotation of the eccentric pressure roller is provided between the rotating shaft and the accommodating box.

[0009] Preferably, the suppression unit includes a hollow disk fixed on the inner wall of the accommodating box, the end of the rotating shaft passes through the interior of the hollow disk, a suppression ratchet is fixed to the surface of the rotating shaft, an embedding groove is opened on the inner wall of the hollow disk, a suppression rod is slidably installed on the inner wall of the embedding groove, an annular block is fixed on the surface of the suppression rod, a pressure spring is sleeved on the surface of the suppression rod, a draw rope is fixed to the end of the suppression rod, one end of the draw rope passes through the hollow disk and the accommodating box in sequence and extends to the outside of the hollow disk, and a draw ring is fixed to one end of the draw rope.

[0010] Preferably, the anti-rotation mechanism includes a tension spring rod fixed on the upper claw arm, an extension block is fixed to one end of the tension spring rod, a plate is fixed to the end of the extension block, anti-rotation external teeth are arranged on the side of the plate, anti-rotation internal teeth are arranged on the end of the adjusting shaft and used in conjunction with the anti-rotation external teeth, a triangular inhibition block is slidably installed on the upper claw arm via a sliding block, a protrusion is fixed on the upper claw arm, and a locking spring is fixed between the protrusion and the sliding block.

[0011] Preferably, the anti-rotation outer teeth and the anti-rotation inner teeth are both designed as annular wavy teeth.

[0012] Preferably, the triangular suppression block is a right triangle, and a side of the triangular suppression block close to the extension block is designed as a slope.

[0013] Preferably, a sliding bar is fixed to the side surface of the adjusting claw, and a sliding groove used in conjunction with the sliding bar is provided on the inner wall of the groove.

[0014] Preferably, the friction pad and the friction layer are both made of frosted material, and a push rod groove matching the push rod is provided on the side of the accommodating box.

[0015] Beneficial Effects

[0016] The present invention provides a three-claw manipulator for a claw machine. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The claw machine uses a three-claw manipulator, which can realize the position of the adjustment claw by pulling it arbitrarily. After the adjustment is completed, the pull ring is released, and the inhibition rod is quickly reset under the action of the elastic force of the pressure spring, and the inhibition ratchet is locked in one direction. At this time, the push rod can be pushed upward, and then the entire eccentric pressure roller squeezes the slide plate, so that the friction pad and the friction layer are in contact and squeezed, thereby completing the rapid and stable locking of the adjustment claw position, and then conveniently controlling the extension length of the adjustment claw to adapt to different scenarios and easy to operate.

[0018] (2) The claw machine uses a three-claw manipulator. When the angle of the lower claw arm needs to be adjusted, pull the extension block so that the extension block pushes the entire triangular restraining block upward until the extension block moves to the top of the right-angled side of the triangular restraining block. At this time, release the extension block and quickly reset the triangular restraining block to block and limit the extension block. At this time, the anti-rotation outer teeth and the anti-rotation inner teeth are stably separated. The angle of the lower claw arm can be freely rotated. After the adjustment is completed, push the triangular restraining block so that the triangular restraining block loses the limit on the extension block. Under the elastic force of the tension spring rod, the plate is quickly reset, so that the anti-rotation outer teeth and the anti-rotation inner teeth are stably engaged, and the adjustment shaft is locked. The angle of the claw arm part can be arbitrarily controlled, resulting in better applicability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the grabbing assembly of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection between the lower claw arm and the upper claw arm of the present invention;

[0022] Figure 4 It is a three-dimensional cross-sectional view of the adjusting claw and the containing box of the present invention;

[0023] Figure 5 For the present invention Figure 3 A partial enlarged view of the middle A;

[0024] Figure 6 It is a schematic diagram of the adjusting shaft structure of the present invention;

[0025] Figure 7 For the present invention Figure 4 A partial enlarged view of point B in the middle;

[0026] Figure 8 This is a schematic diagram of the connection between the suppression unit and the rotating shaft of the present invention;

[0027] Fig. 9 It is a side sectional view of the hollow disk structure of the present invention.

[0028] In the figure: 1-support frame, 2-cylinder, 3-movable plate, 4-U-shaped block, 5-upper claw arm, 6-connecting block, 7-adjusting shaft, 8-anti-rotation mechanism, 81-tension spring rod, 82-extension block, 83-sticking plate, 84-anti-rotation outer teeth, 85-anti-rotation inner teeth, 86-sliding block, 87-triangular inhibition block, 88-bump, 89-locking spring, 9-unidirectional rotation positioning mechanism, 91-accommodating box, 92-rotating shaft, 93-eccentric pressure roller, 94-push rod, 95-slide plate, 9 6-contact block, 97-friction pad, 98-spring block, 99-reset spring, 910-through groove, 911-friction layer, 912-suppression unit, 9121-hollow disk, 9122-suppression ratchet, 9123-embedded groove, 9124-suppression rod, 9125-annular block, 9126-pressure spring, 9127-draw rope, 9128-draw ring, 10-lower claw arm, 11-groove, 12-adjusting claw, 13-sliding bar, 14-sliding groove, 15-push rod groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 9 The present invention provides the following technical solutions: A three-claw manipulator for a claw machine includes a support frame 1, a cylinder 2 is fixed above the support frame 1, the cylinder 2 is controlled by an external control switch, the end of the cylinder 2 passes through the support frame 1, and a grabbing component is arranged between the end of the cylinder 2 and the support frame 1.

[0031] The grabbing assembly includes a movable plate 3 fixed at the end of the cylinder 2, three evenly distributed U-shaped blocks 4 are fixed at the bottom of the support frame 1, and upper claw arms 5 are rotatably installed on the three U-shaped blocks 4, and three evenly distributed connecting blocks 6 are rotatably installed on the outer periphery of the movable plate 3, and adjacent connecting blocks 6 are rotatably connected to the upper claw arms 5. The ends of the three upper claw arms 5 are rotatably installed with lower claw arms 10 through adjusting shafts 7, and the adjusting shaft 7 is embedded and rotatably arranged at the ends of the upper claw arms 5. The lower claw arms 10 are fixed on the surface of the adjusting shaft 7 and can rotate with the adjusting shaft 7. Grooves 11 are provided on the outer sides of the three lower claw arms 10, and adjusting claws 12 are slidably installed on the outer sides of the grooves 11. An anti-rotation mechanism 8 for locking or unlocking the adjusting shaft is provided between the upper claw arm 5 and the adjusting shaft 7, and a one-way rotating positioning mechanism 9 for positioning or releasing the positioning of the adjusting claw 12 is provided between the adjusting claw 12 and the groove 11.

[0032] In actual use, by starting the cylinder 2, the cylinder 2 shortens and drives the movable plate 3 to move upward, so that the three upper claw arms 5 approach each other to perform a grasping action. When the cylinder 2 extends, it drives the movable plate 3 to move downward, so that the three upper claw arms 5 move away from each other to achieve a releasing operation.

[0033] In this embodiment, the one-way rotation positioning mechanism 9 includes a accommodating box 91 fixed to the outside of the adjusting claw 12, an eccentric pressure roller 93 is rotatably installed inside the accommodating box 91 through a rotating shaft 92, a push rod 94 extending to the outside of the accommodating box 91 is fixed on the surface of the eccentric pressure roller 93, a slide plate 95 is slidably installed on the inner wall of the accommodating box 91, the slide plate 95 is in contact with the eccentric pressure roller 93, a contact block 96 is fixed on the side of the slide plate 95, a friction pad 97 is fixed on the side of the contact block 96, a spring block 98 is fixed on the inner wall of the accommodating box 91, and a spring block 98 is fixed between the spring block 98 and the slide plate 95. A reset spring 99 is provided. The reset spring 99 is provided to facilitate the rapid reset of the slide plate 95. A through groove 910 connected to the accommodating box 91 is provided on the inner side of the adjusting claw 12. A friction layer 911 used in conjunction with the friction pad 97 is provided on the groove 11. Both the friction pad 97 and the friction layer 911 are made of frosted material. The frosted material can increase friction. After the friction pad 97 contacts the friction layer 911, the adjusting claw 12 can be positioned on the groove 11. A suppression unit 912 for limiting the reverse rotation of the eccentric pressure roller 93 is provided between the rotating shaft 92 and the accommodating box 91.

[0034] In this embodiment, the suppression unit 912 includes a hollow disk 9121 fixed to the inner wall of the accommodating box 91, the end of the rotating shaft 92 passes through the inside of the hollow disk 9121, a suppression ratchet 9122 is fixed to the surface of the rotating shaft 92, an embedding groove 9123 is provided on the inner wall of the hollow disk 9121, a suppression rod 9124 is slidably installed on the inner wall of the embedding groove 9123, the suppression ratchet 9122 is used in conjunction with the suppression rod 9124, and a ring block 9125 is fixed to the surface of the suppression rod 9124. The surface of the rod 9124 is sleeved with a compression spring 9126. The setting of the compression spring 9126 facilitates the rapid resetting of the inhibition rod 9124. A drawstring 9127 is fixed to the end of the inhibition rod 9124. One end of the drawstring 9127 passes through the hollow disk 9121 and the accommodating box 91 in sequence and extends to the outside of the hollow disk 9121. A draw ring 9128 is fixed to one end of the drawstring 9127. The setting of the draw ring 9128 facilitates the drawstring 9127 to pull the entire inhibition rod 9124 to move.

[0035] The push rod 94 can be bent upward at this time, and then the entire eccentric pressure roller 93 is squeezed to squeeze the slide plate 95, so that the friction pad 97 is in contact with the friction layer 911 and the position of the adjusting claw 12 is locked.

[0036] In this embodiment, the anti-rotation mechanism 8 includes a tension spring rod 81 fixed on the upper claw arm 5, an extension block 82 is fixed at one end of the tension spring rod 81, a contact plate 83 is fixed at the end of the extension block 82, an anti-rotation outer tooth 84 is arranged on the side of the contact plate 83, an anti-rotation inner tooth 85 used in conjunction with the anti-rotation outer tooth 84 is arranged at the end of the adjustment shaft 7, a triangular inhibition block 87 is slidably mounted on the upper claw arm 5 through a sliding block 86, a protrusion 88 is fixed on the upper claw arm 5, and a locking spring 89 is fixed between the protrusion 88 and the sliding block 86. The anti-rotation outer tooth 84 and the anti-rotation inner tooth 85 are both designed as annular wavy teeth, the triangular inhibition block 87 is a right triangle, and the side of the triangular inhibition block 87 close to the extension block 82 is designed as an inclined surface.

[0037] In actual use, when the angle of the lower claw arm 10 needs to be adjusted, the extension block 82 is pulled so that the extension block 82 pushes the entire triangular restraining block 87 upward until the extension block 82 moves to the top of the right-angled side of the triangular restraining block 87. At this time, the extension block 82 is released, and the extension block 82 is blocked and limited by the triangular restraining block 87 for rapid reset. At this time, the anti-rotation outer teeth 84 and the anti-rotation inner teeth 85 are stably separated. The angle of the lower claw arm 10 can be freely rotated. After the adjustment is completed, the triangular restraining block 87 is pushed so that the triangular restraining block 87 loses the limit on the extension block 82. Under the elastic force of the tension spring rod 81, the plate 83 is driven to be quickly reset, thereby making the anti-rotation outer teeth 84 and the anti-rotation inner teeth 85 stably meshed, thereby locking the adjustment shaft 7. In this application, the tension spring rod 81 can only drive the extension block 82 to move in the horizontal direction and cannot rotate.

[0038] In this embodiment, a sliding bar 13 is fixed to the side of the adjusting claw 12, and a sliding groove 14 is provided on the inner wall of the groove 11 for use with the sliding bar 13. A push rod groove 15 adapted to the push rod 94 is provided on the side of the accommodating box 91. The setting of the sliding bar 13 and the sliding groove 14 facilitates the free sliding of the adjusting claw 12 and the adjusting claw 12 will not separate from the groove 11.

[0039] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-claw manipulator for a claw machine, comprising a support frame (1), characterized in that: A cylinder (2) is fixed above the support frame (1), an end of the cylinder (2) passes through the support frame (1), and a grabbing assembly is provided between the end of the cylinder (2) and the support frame (1); The grab assembly comprises a movable plate (3) fixed to the end of the cylinder (2), three evenly distributed U-shaped blocks (4) are fixed to the bottom of the support frame (1), upper claw arms (5) are rotatably mounted on the three U-shaped blocks (4), three evenly distributed connecting blocks (6) are rotatably mounted on the outer periphery of the movable plate (3), adjacent connecting blocks (6) are rotatably connected to the upper claw arms (5), the ends of the three upper claw arms (5) are rotatably mounted with lower claw arms (10) through adjustment shafts (7), grooves (11) are provided on the outer sides of the three lower claw arms (10), and an adjustment claw (12) is slidably mounted on the outer sides of the grooves (11), an anti-rotation mechanism (8) for locking or unlocking the adjustment shaft is provided between the upper claw arm (5) and the adjustment shaft (7), and a one-way rotation positioning mechanism (9) for positioning or unlocking the adjustment claw (12) is provided between the adjustment claw (12) and the groove (11); The anti-rotation mechanism (8) comprises a tension spring rod (81) fixed on the upper claw arm (5), an extension block (82) is fixed on one end of the tension spring rod (81), a contact plate (83) is fixed on the end of the extension block (82), an anti-rotation outer tooth (84) is arranged on the side of the contact plate (83), an anti-rotation inner tooth (85) used in conjunction with the anti-rotation outer tooth (84) is arranged on the end of the adjustment shaft (7), a triangular inhibition block (87) is slidably mounted on the upper claw arm (5) via a sliding block (86), a protrusion (88) is fixed on the upper claw arm (5), and a locking spring (89) is fixed between the protrusion (88) and the sliding block (86); The anti-rotation outer teeth (84) and the anti-rotation inner teeth (85) are both designed as annular wavy teeth; The triangular suppression block (87) is a right triangle, and a side of the triangular suppression block (87) close to the extension block (82) is designed as an inclined surface.

2. A three-claw manipulator for a claw machine according to claim 1, characterized in that: The one-way rotation positioning mechanism (9) comprises a accommodating box (91) fixed on the outside of the adjusting claw (12); an eccentric pressure roller (93) is rotatably mounted inside the accommodating box (91) via a rotating shaft (92); a push rod (94) extending to the outside of the accommodating box (91) is fixed on the surface of the eccentric pressure roller (93); a slide plate (95) is slidably mounted on the inner wall of the accommodating box (91); the slide plate (95) is in contact with the eccentric pressure roller (93); a contact block (96) is fixed on the side of the slide plate (95); the contact block (96) A friction pad (97) is fixed to the side of the housing box (91), a spring block (98) is fixed to the inner wall of the housing box (91), a return spring (99) is fixed between the spring block (98) and the slide plate (95), a through groove (910) connected to the housing box (91) is formed on the inner side of the adjusting claw (12), a friction layer (911) used in conjunction with the friction pad (97) is provided on the groove (11), and a suppression unit (912) for limiting the reverse rotation of the eccentric pressure roller (93) is provided between the rotating shaft (92) and the housing box (91).

3. A three-claw manipulator for a claw machine according to claim 2, characterized in that: The suppression unit (912) comprises a hollow disk (9121) fixed to the inner wall of the accommodating box (91), the end of the rotating shaft (92) passes through the interior of the hollow disk (9121), a suppression ratchet (9122) is fixed to the surface of the rotating shaft (92), an embedding groove (9123) is provided on the inner wall of the hollow disk (9121), a suppression rod (9124) is slidably mounted on the inner wall of the embedding groove (9123), an annular block (9125) is fixed to the surface of the suppression rod (9124), a compression spring (9126) is sleeved on the surface of the suppression rod (9124), a drawstring (9127) is fixed to the end of the suppression rod (9124), one end of the drawstring (9127) passes through the hollow disk (9121) and the accommodating box (91) in sequence and extends to the outside of the hollow disk (9121), and a draw ring (9128) is fixed to one end of the drawstring (9127).

4. The three-claw manipulator for a claw machine according to claim 1, characterized in that: A sliding bar (13) is fixed to the side surface of the adjusting claw (12), and a sliding groove (14) for use with the sliding bar (13) is provided on the inner wall of the groove (11).

5. The three-claw manipulator for a claw machine according to claim 2, characterized in that: The friction pad (97) and the friction layer (911) are both made of frosted material, and a push rod groove (15) adapted to the push rod (94) is provided on the side of the accommodating box (91).

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