Mechanical clamping jaw for gift machine and gift machine thereof

Abstract

The utility model provides a mechanical clamping jaw for a gift machine and the gift machine. The mechanical clamping jaw for the gift machine comprises a base, a jaw arm, a driving assembly and a shell, wherein the jaw arm and the driving assembly are installed on the base, and the shell covers the upper portion of the base and the outer portion of the driving assembly. A linkage platform in the driving assembly comprises an upper linkage block and a lower linkage block; the axis of the upper linkage block is fixedly connected with a lead screw nut; an extension arm is arranged on the periphery of the upper linkage block in a protruding mode, and a sensor matched with the extension arm is arranged on the base; the upper linkage block and the lower linkage block are elastically connected through a spring in the axial direction; a plurality of claw arm linkage grooves are formed in the side face of the lower linkage block, one end of each claw arm is connected into the corresponding claw arm linkage groove in an inserted mode and connected with the corresponding claw arm linkage groove in a pivoted mode, and the other end of each claw arm is made to conduct opening and closing actions below the base. The grabbing force balance requirement of the gift machine can be met, and limiting and inductive control of the action of the clamping jaw can be matched with a simple structure.

Description

Technical Field

[0001] The utility model relates to the field of amusement equipment, in particular to a mechanical clamp for a gift machine and the gift machine. Background Art

[0002] With the improvement of living standards, people are able to experience more leisure and entertainment activities, and the entertainment equipment industry has gradually developed. At present, gift machines are everywhere in shopping malls and animation entertainment venues. Customers only need to put a certain number of coins into the gift machine to get the opportunity to grab their favorite gifts or rewards.

[0003] Among them, claw machines are a type of gift machine that has been widely popular in recent years. The main way to play is to display the gifts in a transparent cabinet, and set a robot arm inside the cabinet that can control the grabbing of objects. The user must use his or her own skills to control the robot arm to grab the gifts he or she wants. Because most of the gifts placed in the cabinet are stuffed toys such as plush toys, it is also called a "claw machine", "claw machine" or "doll machine".

[0004] The mechanical claw at the end of the mechanical arm in the gift machine is the most critical component. However, there is still a lot of room for improvement in the existing mechanical claws. The mechanical claw needs to maintain a delicate balance of gripping force when grabbing gifts, avoiding both too much gripping force that makes the gripping too easy and too little gripping force that makes the gripping too difficult. In order to achieve this delicate gripping balance, the mechanical claws in existing gift machines are designed to be too complicated, which not only increases the manufacturing cost, but also increases the difficulty of repair and maintenance, shortens the service life, and urgently needs to be improved and perfected. Utility Model Content

[0005] The purpose of the utility model is to provide a mechanical gripper for a gift machine and a gift machine thereof, in view of the problems existing in the prior art, which has the characteristics of simple structure, low cost and easy maintenance, and can meet the gripping balance requirements of the gift machine, and can use a simple structure to coordinate the limit and induction control of the gripper action.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mechanical gripper for a gift machine, comprising a base, a gripper arm and a driving assembly mounted on the base, and a housing covering the outside of the base and the driving assembly; the base is provided with at least two gripper arm mounting seats, each gripper arm mounting seat is pivotally connected to a gripper arm, so that the gripper arm can swing with the pivot connection as a fulcrum; the driving assembly comprises a screw motor, a motor fixing platform and a linkage platform; the motor fixing platform is fixedly mounted above the middle of the base, the screw motor is fixed on the motor fixing platform, the screw of the screw motor is extended downward, the linkage platform is connected to the screw of the screw motor, and is driven by the screw motor to move up and down;

[0008] The linkage platform includes an upper linkage block and a lower linkage block;

[0009] A screw nut is fixedly connected to the axis of the upper linkage block, and the screw nut is connected to the screw of the screw motor to form a screw pair, so that the screw motor can drive the upper linkage block to move up and down on the screw; at least one extension arm is radially protruding from the periphery of the upper linkage block, and a sensor cooperating with the extension arm is provided on the base, so that when the screw motor drives the upper linkage block to be pressed down to the bottom, the sensor detects the extension arm; the lower part of the upper linkage block is nested and connected to the axis of the lower linkage block, so that the lower linkage block and the upper linkage block are fixed to each other in the circumferential direction and can move relative to each other in the axial direction; the axial direction between the upper linkage block and the lower linkage block is elastically connected by a spring;

[0010] A plurality of claw arm linkage grooves are provided on the side of the lower linkage block, one end of the claw arm is inserted and connected to the claw arm linkage groove and is pivotally connected to the claw arm linkage groove; when the linkage platform moves up and down, one end of the claw arm is driven to move up and down, thereby causing the other end of the claw arm to open and close below the base.

[0011] Furthermore, the extension arms are provided with at least two, one of which is arranged opposite to the sensor; a limit seat cooperating with the other extension arms is provided on the base, so that when the motor drives the upper linkage block to be pressed down to the bottom, the extension arm is limited by the limit seat.

[0012] Furthermore, the upper linkage block and the lower linkage block are axially elastically connected through three springs; wherein the upper end of each spring is fixedly connected to the outer side of the upper linkage block, and the lower end of the spring is fixedly connected to the outer side of the lower end of the lower linkage block.

[0013] Furthermore, the outer side of the lower part of the upper linkage block has a clamping edge extending axially and protruding radially; the axis of the lower linkage block is hollow, and the inner surface of the axis of the lower linkage block has a clamping groove extending axially and recessed radially; the clamping edge of the upper linkage block is axially inserted into the clamping groove of the lower linkage block, so that the upper linkage block and the lower linkage block are relatively fixed in the circumferential direction.

[0014] Furthermore, a limit baffle is provided on the claw arm mounting seat to limit the maximum movement stroke of the claw arm when it is engaged.

[0015] Furthermore, the claw arm mounting base includes a mounting groove and a detachable pressure block integrally arranged with the base; the claw arm is pivotally connected to the mounting groove and can swing in the mounting groove with the pivot connection point as a fulcrum; the pressure block is fixedly connected to the top of the mounting groove to limit the claw arm in the mounting groove; the limit baffle extends inward from the pressure block toward the end of the claw arm, and is used to limit the maximum movement stroke of one end of the claw arm when the claw arm swings.

[0016] Furthermore, a pin slot for connecting to the claw arm pivot is provided at the top of the installation slot, the claw arm is pivotally connected to the pin slot via a pin, and the pressing block is fixedly connected to the top of the installation slot to close the pin slot.

[0017] A gift machine comprises the above-mentioned mechanical clamp for gift machines.

[0018] The mechanical claw of the utility model adopts a simple and ingenious elastic connection structure to drive the claw arm to move, so that the claw arm has a certain micro-movement space while maintaining a fully grasped state, and the grasping force is neither too large nor too small, which can achieve an ingenious grasping force balance and fully meet the use requirements of the gift machine. In addition, the upper linkage block of the linkage platform is provided with an extension arm structure, which can be matched with the limit and induction control with a simple structure, and also saves installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a mechanical clamp for a gift machine provided by an embodiment of the utility model.

[0020] Figure 2 It is a schematic diagram of the internal structure of a mechanical clamp for a gift machine provided by an embodiment of the utility model.

[0021] Figure 3 It is a schematic diagram of the coordination between the linkage platform and the sensor in the embodiment of the utility model.

[0022] Figure 4 It is a schematic diagram of the installation structure of the claw arm and the claw arm mounting seat in the embodiment of the utility model.

[0023] Figure 5 It is a structural schematic diagram of the linkage platform in the embodiment of the utility model. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Embodiment 1

[0026] like Figures 1 to 3 As shown, the utility model provides a mechanical gripper for a gift machine, comprising a base 1, a gripper arm 3 and a driving assembly mounted on the base 1, and a housing 2 covering the base 1 and the driving assembly.

[0027] At least two claw arm mounting seats 6 are provided on the base, and each claw arm mounting seat 6 is pivotally connected to a claw arm 3, so that the claw arm 3 can swing with the pivot connection as a fulcrum; the driving assembly includes a screw motor 4, a motor fixing platform 40 and a linkage platform 5; the motor fixing platform 40 is fixedly mounted above the middle part of the base 1, the screw motor 4 is fixed on the motor fixing platform 40, the screw 41 of the screw motor 4 is extended downward, and the linkage platform 5 is connected to the screw 41 of the screw motor 4, and is driven by the screw motor 4 to move up and down.

[0028] The linkage platform 5 includes an upper linkage block 51 and a lower linkage block 52 .

[0029] A screw nut 42 is fixedly connected to the axis of the upper linkage block 51, and the screw nut 42 is connected to the screw 41 of the screw motor 4 to form a screw pair, so that the screw motor 4 can drive the upper linkage block 51 to move up and down on the screw 41; at least one extension arm 511 is radially protruding from the periphery of the upper linkage block 51, and a sensor 11 cooperating with the extension arm 511 is provided on the base 1, so that when the screw motor 4 drives the upper linkage block 51 to be pressed down to the bottom, the sensor 11 detects the extension arm 511; the lower part of the upper linkage block 51 is nested and connected to the axis of the lower linkage block 52, so that the lower linkage block 52 and the upper linkage block 51 are fixed to each other in the circumferential direction and can move relative to each other in the axial direction; the axial direction between the upper linkage block 51 and the lower linkage block 52 is elastically connected by a spring 53.

[0030] A plurality of claw arm linkage grooves 50 are provided on the side of the lower linkage block 51, and one end of the claw arm 3 is inserted and connected to the claw arm linkage groove 50, and is pivotally connected to the claw arm linkage groove 50; when the linkage platform 5 moves up and down, it drives one end of the claw arm 3 to move up and down, thereby causing the other end of the claw arm 3 to open and close below the base 1.

[0031] The extension arm 511 protruding radially outward can cooperate with the sensor 11. When the screw motor 5 drives the upper linkage block 51 to press downward and drives the claw arm 3 to open to the maximum extent, the extension arm 511 just reaches the sensor 11, so that the sensor 11 generates an induction signal to prevent the screw motor 4 from continuing to run, thereby achieving the purpose of induction control. This layout is not only simple in structure, but also saves space in height.

[0032] like Figure 3As shown, further, the extension arms 511 are provided with at least two, one of which is arranged opposite to the sensor 11; the base 1 is provided with a limit seat 12 that cooperates with the remaining extension arms 511, so that when the motor drives the upper linkage block 51 to be pressed down to the bottom, the extension arm 511 is limited by the limit seat 12.

[0033] The above structure belongs to the mechanical limit structure in addition to the electrical limit. The two cooperate with each other to prevent the equipment from malfunctioning and being damaged when the sensor 11 is damaged.

[0034] like Figure 5 As shown, specifically, in this embodiment, the outer side of the lower part of the upper linkage block 51 has a clamping edge 512 extending axially and protruding radially; the axis of the lower linkage block 52 is hollow, and the inner surface of the axis of the lower linkage block 52 has a clamping groove 521 extending axially and recessed radially; the clamping edge 512 of the upper linkage block 51 is axially inserted into the clamping groove 521 of the lower linkage block 52, so that the upper linkage block 51 and the lower linkage block 52 are relatively fixed in the circumferential direction.

[0035] The upper linkage block 51 and the lower linkage block 52 are axially elastically connected by three springs 53; wherein the upper end of each spring 53 is fixedly connected to the outer side of the eaves cover 511 of the upper linkage block 51, and the lower end of the spring 53 is fixedly connected to the outer side of the lower end of the lower linkage block 52.

[0036] Through the above structure, the opening and closing movement of the three claw arms in the embodiment of the utility model can be realized by the screw motor 4 controlling the up and down movement of the linkage platform 5. Since the upper linkage block 51, the lower linkage block 52 and the claw arm 3 are fixed to each other circumferentially and cannot rotate relative to each other; when the screw 41 of the screw motor 4 rotates forward, the screw nut 42 drives the upper linkage block 51 to move upward, and then drives one end of the claw arm 3 to move upward, so that the claw arm 3 swings with the pivot connection as the fulcrum, and the other end of the claw arm 3 performs a gripping action below the base 1; when the screw 41 of the screw motor 4 rotates reversely, the screw nut 42 drives the upper linkage block 51 to move downward, and then drives one end of the claw arm 3 to move downward, so that the claw arm 3 swings with the pivot connection as the fulcrum, and the other end of the claw arm 3 performs a loosening action below the base 1.

[0037] In the embodiment of the utility model, when the mechanical claw is in the gripping state, the gripping force of the claw arm 3 is actually controlled by the three springs 53 on the linkage platform 5, which enables the gripping force of the claw arm 3 to be in a proper balance state. Specifically, during the gripping action of the claw arm 3, the force for lifting one end of the claw arm 3 is actually directly provided by the lower linkage block 52, and the force for the lower linkage block 52 to rise is indirectly elastically transmitted through the three springs 53, and the lower linkage block 52 is not directly connected to the screw rod 41. Based on the above structure, when the mechanical claw grabs an item, the lower linkage block 52 leaves a certain elastic downward movement space for one end of the claw arm 3, that is, a certain elastic gripping space is left for the other end of the claw arm 3, so that there is a certain micro-motion space while maintaining a fully gripping state, and the gripping force is neither too large nor too small, which can achieve a clever gripping balance and meet the use requirements of the gift machine.

[0038] like Figure 4 As shown, in the embodiment of the utility model, a limit baffle 63 is provided on the claw arm mounting seat 6 to limit the maximum movement stroke of the claw arm 3 when grasping. That is, when the upper end of the claw arm 3 collides with the limit baffle 63, the lower end of the claw arm 3 cannot continue to grasp, thereby setting a basic difficulty for grasping the gift.

[0039] Specifically, the claw arm mounting base 6 includes a mounting groove 61 and a detachable pressure block 62 integrally arranged with the base 1; the claw arm 3 is pivotally connected to the mounting groove 61 and can swing in the mounting groove 61 with the pivot connection point as a fulcrum; the pressure block 62 is fixedly connected to the top of the mounting groove 61 to limit the claw arm 3 in the mounting groove 61; the limit baffle 63 extends inward from the pressure block 62 toward the end of the claw arm 3, and is used to limit the maximum movement stroke of one end of the claw arm 3 when the claw arm 3 swings.

[0040] More specifically, a pin slot for pivotally connecting with the claw arm 3 is provided at the top of the installation slot 61, and the claw arm 3 is pivotally connected with the pin slot through a pin, and the pressing block 62 is fixedly connected to the top of the installation slot 61 to close the pin slot. During installation, the claw arm 3 with the pin is first installed in the pin slot, and then the pressing block 62 is installed to fix the position of the pin. Such an installation structure is more convenient.

[0041] Embodiment 2

[0042] The utility model also provides a gift machine, comprising the mechanical gripper for gift machine described in Example 1. Specifically, the gift machine has a cabinet, the top surface of the cabinet is provided with a mobile platform, and the screw-driven mechanical gripper is installed on the mobile platform. The bottom surface of the cabinet is provided with a gift channel; the outside of the cabinet is provided with an operating table, and the operating table is provided with buttons and a rocker, and the buttons and the rocker are connected to the screw-driven mechanical gripper through a control circuit, and are used to control the screw-driven mechanical gripper to move on the mobile platform and grab gifts from the inside of the cabinet and put them into the gift channel.

[0043] The utility model provides a mechanical gripper for a gift machine and the gift machine thereof, which has the characteristics of simple structure, low cost and easy maintenance, and can meet the gripping force balance requirement of the gift machine.

[0044] The mechanical claw of the utility model adopts a simple and ingenious elastic connection structure to drive the claw arm 3 to move, so that the claw arm 3 has a certain micro-movement space while maintaining a fully grasped state, and the grasping force is neither too large nor too small, which can achieve an ingenious grasping force balance and fully meet the use requirements of the gift machine. In addition, the improved linkage platform structure adopts an upper linkage block 51 with an extension arm 511, which is convenient for limit control and induction control, and can also save component processing and assembly costs.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A mechanical gripper for a gift machine, comprising a base, a gripper arm and a driving assembly mounted on the base, and a housing covering the outside of the base and the driving assembly; the base is provided with at least two gripper arm mounting seats, each of which is pivotally connected to a gripper arm, so that the gripper arm can swing with the pivot connection as a fulcrum; the driving assembly comprises a screw motor, a motor fixing platform and a linkage platform; the motor fixing platform is fixedly mounted above the middle of the base, the screw motor is fixed on the motor fixing platform, the screw of the screw motor is extended downward, the linkage platform is connected to the screw of the screw motor, and is driven by the screw motor to move up and down; it is characterized in that: The linkage platform includes an upper linkage block and a lower linkage block; A screw nut is fixedly connected to the axis of the upper linkage block, and the screw nut is connected to the screw of the screw motor to form a screw pair, so that the screw motor can drive the upper linkage block to move up and down on the screw; at least one extension arm is radially protruding from the periphery of the upper linkage block, and a sensor cooperating with the extension arm is provided on the base, so that when the screw motor drives the upper linkage block to be pressed down to the bottom, the sensor detects the extension arm; the lower part of the upper linkage block is nested and connected to the axis of the lower linkage block, so that the lower linkage block and the upper linkage block are fixed to each other in the circumferential direction and can move relative to each other in the axial direction; the axial direction between the upper linkage block and the lower linkage block is elastically connected by a spring; A plurality of claw arm linkage grooves are provided on the side of the lower linkage block, one end of the claw arm is inserted and connected to the claw arm linkage groove and is pivotally connected to the claw arm linkage groove; when the linkage platform moves up and down, one end of the claw arm is driven to move up and down, thereby causing the other end of the claw arm to open and close below the base.

2. The mechanical gripper for gift machines according to claim 1, characterized in that: The extension arms are provided with at least two, one of which is arranged opposite to the sensor; the base is provided with a limit seat cooperating with the other extension arms, so that when the motor drives the upper linkage block to be pressed down to the bottom, the extension arm is limited by the limit seat.

3. The mechanical gripper for gift machine according to claim 1, characterized in that: The upper linkage block and the lower linkage block are axially elastically connected via three springs, wherein the upper end of each spring is fixedly connected to the outer side of the upper linkage block, and the lower end of the spring is fixedly connected to the outer side of the lower end of the lower linkage block.

4. The mechanical gripper for gift machine according to claim 1, characterized in that: The lower outer side of the upper linkage block has a clamping edge extending axially and protruding radially; the axis of the lower linkage block is hollow, and the inner surface of the axis of the lower linkage block has a clamping groove extending axially and recessed radially; the clamping edge of the upper linkage block is axially inserted into the clamping groove of the lower linkage block, so that the upper linkage block and the lower linkage block are relatively fixed in the circumferential direction.

5. The mechanical gripper for gift machine according to claim 1, characterized in that: A limit baffle is arranged on the claw arm mounting seat to limit the maximum movement stroke of the claw arm when it is engaged.

6. The mechanical gripper for gift machine according to claim 5, characterized in that: The claw arm mounting base includes a mounting groove and a detachable pressure block integrally arranged with the base; the claw arm is pivotally connected to the mounting groove and can swing in the mounting groove with the pivot connection point as a fulcrum; the pressure block is fixedly connected to the top of the mounting groove to limit the claw arm in the mounting groove; the limit baffle extends inward from the pressure block toward the end of the claw arm, and is used to limit the maximum movement stroke of one end of the claw arm when the claw arm swings.

7. The mechanical gripper for gift machine according to claim 6, characterized in that: A pin slot for connecting with the claw arm pivot is arranged on the top of the installation slot, the claw arm is connected with the pin slot pivot through a pin, and the pressing block is fixedly connected to the top of the installation slot to close the pin slot.

8. A gift machine, characterized in that: A mechanical gripper for a gift machine comprising any one of claims 1 to 7.

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