A tire embryo automatic conveying robot tire contact device

Abstract

The present invention relates to the field of tire production and transportation, and specifically to a tire embryo automatic conveying robot tire contact device. A tire embryo automatic conveying robot tire contact device comprises a bracket, a tension spring, and a tension spring tire contact rod; the tension spring tire contact rod is an "L"-shaped rod formed by a long arm and a short arm, and the short arm of the tension spring tire contact rod is fixedly connected to the tension spring; and is located on the same straight line as the short arm; one end of the bracket is rotatably connected to the tension spring tire contact rod, and the bracket is also provided with a proximity switch hole. The advantages of the present invention are: the tire contact device described in the device is installed on the inner side of the mechanical claw hand, and will not scratch the tire embryo, nor will it cause the situation that it is not concentric with the robot hand and cannot be effectively detected. It is installed on the inner side of the claw hand and will not damage the tire embryo. At the same time, it also solves the problem that the mechanism has a dead angle when touching the tire of some specifications, resulting in jamming and inability to detect; it also solves the problem that the sliding resistance of the tire contact plate is too large due to the stickiness of the tire embryo, resulting in scratches on the sub-mouth and the sidewall.

Description

Technical Field

[0001] The invention relates to the field of tire production and transportation, and in particular to a tire embryo automatic transportation robot tire contact device. Background Art

[0002] The tire contact device is a component that the robot arm uses to grab the tire and realize automatic operation. The existing tire embryo automatic conveying robot adopts a structure that rotates upward around a fulcrum or a spring reset structure. During the tire contact and tire grabbing process, the tire contact plate slides on the tire embryo and generates a large friction resistance, resulting in scratches on the tire mouth and sidewalls. In special circumstances, it may get stuck and cause punctures and squeezing of the sidewalls and tire mouth.

[0003] The patent "Tire Shaping and Vulcanizing Machine Tire Contactor" (publication number CN104015282A) adopts a vertical roller structure. The roller is used at the tire contact position to realize the expansion and contraction of the robot without scratching the tire. However, the tire embryo structure is that the tip is much higher than the sidewall. The tip may be stuck between the two rollers or exceed the detection range, resulting in the inability to roll and damaging the tire embryo. In severe cases, the tire embryo will be scrapped.

[0004] The patent "Tire Shaping and Vulcanizing Machine Robot Tire Contact Device" (publication number CN104385503A) adopts a connecting rod structure. Although it solves the problems of flexibility and sticking, the tire embryo is made of uncured rubber and has a certain viscosity. The straight tire contact plate cannot slide due to excessive resistance when the robot expands and contracts, causing damage to the tire embryo. There is also the problem of the tire embryo and the robot being out of center, resulting in the inability to effectively detect the damaged tire embryo. At the same time, due to too many parts and the welding on the robot, there is a risk of falling into the tire embryo and the inability to adapt to tire embryos of many specifications. Summary of the invention

[0005] In order to solve the above problems, the present invention provides the following technical solutions:

[0006] A tire contact device for an automatic tire embryo conveying robot, comprising a bracket, a tension spring, and a tension spring tire contact rod; the tension spring tire contact rod is an "L"-shaped rod formed by a long arm and a short arm, and the short arm of the tension spring tire contact rod is fixedly connected to the tension spring and is located on the same straight line as the short arm;

[0007] One end of the bracket is rotatably connected to the tension spring tire contact rod, and a proximity switch hole is also provided on the bracket, in which a proximity switch is installed; a switch detection frame is also connected to the tension spring tire contact rod, and one end of the switch detection frame is fixedly connected to the long arm and is located on the same straight line as the long arm, and the other end of the switch detection frame is opposite to the proximity switch hole;

[0008] It also includes a limit rod, one end of which is fixedly connected to the bracket, and the other end extends to one side of the long arm of the tension spring tire contact rod, so that the tension spring tire contact rod does not rotate under its own weight, and when the tension spring does not touch the tire embryo, one end of the switch detection frame close to the proximity switch hole is parallel to and directly opposite to the proximity switch hole, and when the tension spring touches the tire embryo, the tension spring is lifted up, and the tension spring tire contact rod turns to the side opposite to the limit rod, so that one end of the switch detection frame close to the proximity switch hole is staggered from the proximity switch hole;

[0009] That is, the limit rod ensures that the initial position of the tension spring tire contact rod under its own weight is located at the detection position of the proximity switch, that is, one end of the switch detection frame close to the proximity switch hole is opposite to the switch detection hole. When the tire contactor does not contact the tire blank, the tension spring will cause the tension spring tire contact rod to rotate around the bearing under its own weight and droop naturally. One end of the switch detection frame close to the proximity switch hole is staggered from the proximity switch hole. By adding the limit rod, the tension spring tire contact rod remains stationary under its own weight, and one end of the switch detection frame close to the proximity switch hole is opposite to the proximity switch hole.

[0010] The bracket is also connected to a connecting plate, which is vertically connected to the bracket at one end away from the connection between the tension spring tire contact rod and the bracket, and faces away from the tension spring tire contact rod;

[0011] The connecting plate is provided with a connecting hole, which is a double waist-shaped hole, and the inner side of the external tire blank automatic conveying robot claw is connected to the bracket through the double waist-shaped hole;

[0012] The tension spring is composed of a spring steel wire dense ring.

[0013] The entire device is installed on the inner side of the claw of the automatic tire embryo conveying robot through the connecting hole on the bracket, ensuring that the tire contact device will directly contact the tire embryo at any tire embryo specification, thus solving the problem of damaging the tire embryo when the tire embryo and the robot are not concentric or the structure is stuck in a dead corner.

[0014] The tension spring is composed of a dense ring of spring steel wire with appropriate wire diameter. The cantilever does not sag under its own weight. It is easy to deform after being stressed and drives the switch detection frame to shift, thereby solving the problem of failure caused by large resistance generated by the tire contact plate when encountering the tire embryo.

[0015] Preferably, a threaded column is connected to the bottom of the bracket, and the long arm of the tension spring tire contact rod and the connection between the long arms are fixedly connected to a bearing seat, a bearing is provided on the bearing seat, and the threaded column is sleeved on the bearing to connect the bracket to the tension spring tire contact rod.

[0016] Preferably, the limiting rod is located between the threaded column and the proximity switch hole.

[0017] Preferably, the tension spring is connected to the tension spring tire contact rod through a transition tube, one end of the transition tube is a flat tube, and the other end is a round tube, the flat tube end is connected to the tension spring tire contact rod, and the round tube end is connected to the tension spring.

[0018] Preferably, the switch detection frame is an inverted "L"-shaped structure, the long side is fixedly connected to the long arm of the tension spring tire contact rod and is located on the same straight line, and the short side is opposite to the proximity switch hole.

[0019] Preferably, the connecting hole is a double waist-shaped hole;

[0020] Preferably, the limiting rod and the threaded column are both welded to the bracket.

[0021] Preferably, the flat end of the transition tube is welded to the short arm of the tension spring tire contact rod.

[0022] One end of the transition tube is a flat tube and the other end is a round tube. The flat tube end is fixed to the short arm of the tension spring tire contact rod by welding. The tension spring is inserted into the round end of the transition tube and then welded and fixed.

[0023] The advantages of the present invention are:

[0024] The existing tire contact device is installed on the outside of the mechanical claw, which is easy to scratch the tire embryo. The tire contact device described in the present device is installed on the inside of the mechanical claw, separated from the tire embryo, and will not scratch the tire embryo.

[0025] At the same time, even if the tire blank is skewed, it will not cause the situation of being out of center with the robot arm and causing ineffective detection. It is installed on the inner side of the gripper, so even if the tire contactor parts fall, it will not damage the tire blank. At the same time, it also solves the problem of some specifications of tire contact causing the mechanism to be stuck and unable to detect due to dead angles; it also solves the problem of excessive sliding resistance of the tire contact plate due to the stickiness of the tire blank, which leads to scratches on the sub-mouth and tire side. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the device of the present invention;

[0027] Figure 2 This is a schematic diagram of the working test.

[0028] Figure markings: 1- bracket, 2- tension spring tire contact rod, 3- long arm, 4- short arm, 5- manipulator claw, 6- proximity switch, 7- tire blank, 8- connecting plate, 101- connecting hole, 102- limiting rod, 103- proximity switch hole, 104- threaded column, 201- switch detection frame, 202- bearing seat, 203- transition pipe, 204- tension spring. DETAILED DESCRIPTION

[0029] Example 1

[0030] A tire embryo automatic conveying robot tire contact device comprises a bracket (1), a tension spring (204), and a tension spring tire contact rod (2); the tension spring tire contact rod (2) is an "L"-shaped rod formed by a long arm (3) and a short arm (4) fixedly connected, the short arm (4) of the tension spring tire contact rod (2) and the tension spring (204) are connected via a transition tube (203) welded to one end of the short arm (4); and the transition tube (203) is located on the same straight line as the short arm (4); one end of the transition tube (203) is a flat tube, and the other end is a round tube; the flat tube end is welded and fixedly connected to the tension spring tire contact rod (2), and the round tube end is connected to the tension spring (204); the tension spring is inserted into the round tube end, and the diameter of the tension spring matches that of the round tube.

[0031] One end of the bracket (1) is rotatably connected to the tension spring tire contact rod (2), and a proximity switch hole (103) is also provided on the bracket (1), and a proximity switch is installed in the proximity switch hole (103);

[0032] The tension spring tire contact rod (2) is also connected to an inverted "L"-shaped switch detection frame (201), wherein the long side of the switch detection frame (201) is fixedly connected to the long arm (3) and is located on the same straight line as the long arm (3), and the short side of the switch detection frame (201) is opposite to the proximity switch hole (103);

[0033] A threaded column (104) is fixedly welded to the bottom of the bracket (1); a bearing seat (202) is fixedly connected to the connection between the long arm (3) and the long arm (4) of the tension spring contact rod (2); a bearing is provided on the bearing seat (202); the threaded column (104) is sleeved on the bearing, and the bracket (1) is rotatably connected to the tension spring contact rod (2);

[0034] It also includes a limit rod (102), one end of which is fixedly connected to the bracket (1), and the other end of which extends to one side of the long arm (3) of the tension spring tire contact rod (2), so that the tension spring tire contact rod (2) does not rotate under its own weight, that is, when the tension spring (204) does not touch the tire embryo, one end of the switch detection frame (201) close to the proximity switch hole (103) is parallel to and directly opposite to the proximity switch hole (103); when the tension spring (204) touches the tire embryo, the tension spring (204) is lifted up, and the tension spring tire contact rod (2) turns to the side opposite to the limit rod (102), so that one end of the switch detection frame (201) close to the proximity switch hole (103) is offset from the proximity switch hole (103);

[0035] The bracket (1) is also connected to a connecting plate (8), and the connecting plate (8) is vertically connected to the bracket (1) at an end away from the connection between the tension spring tire contact rod (2) and the bracket (1), and faces away from the tension spring tire contact rod (2);

[0036] The connecting plate (8) is provided with a connecting hole (101), the connecting hole (101) being a double waist-shaped hole, and the inner side of the external tire blank automatic conveying mechanical hand claw piece (5) is connected to the bracket (1) through the double waist-shaped hole;

[0037] The tension spring (204) is composed of a spring steel wire dense ring.

[0038] The bracket (1) and the tension spring contact rod (2) are rotatably connected through a bearing and a threaded column (103). The double waist-shaped hole is set according to the size of the mounting screw. In this embodiment, the slot width is 9 mm, and the size of the proximity switch hole (104) is 13 mm. The position setting of the limit rod (102) needs to ensure that the switch detection frame (201) is directly opposite the proximity switch hole under the initial deadweight. One end of the transition tube (203) is flat and the other end is round. The flat end is welded to the bearing seat and the tension spring contact rod (2). The tension spring (204) is inserted into the round end and welded and fixed. In this embodiment, the outer diameter of the tension spring is 10 mm and the length is 420 mm. The detection range is applicable to all specifications currently produced. The bearing adopts a support roller bearing.

[0039] exist Figure 2 When the robot claw (5) descends, the tire embryo contacts the tension spring tire contact rod (2), causing the short side of the switch detection frame (201) to separate from the proximity switch hole. The proximity switch signal in the normally closed state is interrupted, indicating that the tire embryo is detected in place. When the robot claw (5) opens or contracts, the tension spring (204) will be deformed by force, but will always keep the switch detection frame (201) away from the proximity switch hole (104). After the tire embryo is separated, it will automatically recover, completing a robot tire grasping and releasing detection.

Claims

1. A tire embryo automatic conveying robot contact device, characterized in that: It comprises a bracket (1), a tension spring (204), and a tension spring tire contact rod (2); The tension spring tire contact rod (2) is an "L"-shaped rod formed by a long arm (3) and a short arm (4); the short arm (4) of the tension spring tire contact rod (2) is fixedly connected to the tension spring (204) and is located on the same straight line as the short arm (4); One end of the bracket (1) is rotatably connected to the tension spring tire contact rod (2), and a proximity switch hole (103) is also provided on the bracket (1), and a proximity switch is installed in the proximity switch hole (103); The tension spring tire contact rod (2) is also connected to a switch detection frame (201), one end of the switch detection frame (201) is fixedly connected to the long arm (3) and is located on the same straight line as the long arm (3), and the other end of the switch detection frame (201) is opposite to the proximity switch hole (103); It also comprises a limit rod (102), one end of which is fixedly connected to the bracket (1), and the other end of which extends to one side of the long arm (3) of the tension spring tire contact rod (2), so that the tension spring tire contact rod (2) does not rotate under its own weight. When the tension spring (204) does not touch the embryo, one end of the switch detection frame (201) close to the proximity switch hole (103) is parallel to and directly opposite to the proximity switch hole (103); when the tension spring (204) touches the embryo, the tension spring (204) is lifted up, and the tension spring tire contact rod (2) turns to the side opposite to the limit rod (102), so that one end of the switch detection frame (201) close to the proximity switch hole (103) is offset from the proximity switch hole (103); The bracket (1) is also connected to a connecting plate (8), and the connecting plate (8) is vertically connected to the bracket (1) at an end away from the connection between the tension spring tire contact rod (2) and the bracket (1), and faces away from the tension spring tire contact rod (2); The connecting plate (8) is provided with a connecting hole (101), the connecting hole (101) being a double waist-shaped hole, and the inner side of the external tire blank automatic conveying mechanical hand claw piece (5) is connected to the bracket (1) through the double waist-shaped hole; The tension spring is composed of a spring steel wire dense ring; The bottom of the bracket (1) is connected to a threaded column (104); the connection between the long arm (3) and the short arm (4) of the tension spring tire contact rod (2) is fixedly connected to a bearing seat (202); a bearing is provided on the bearing seat (202); the threaded column (104) is sleeved on the bearing, and the bracket (1) is rotatably connected to the tension spring tire contact rod (2); The limiting rod (102) is located between the threaded column (104) and the proximity switch hole (103); The switch detection frame is an inverted "L"-shaped structure, the long side is fixedly connected to the long arm (3) of the tension spring tire contact rod (2) and is located on the same straight line, and the short side is opposite to the proximity switch hole (103).

2. The tire embryo automatic conveying robot contact device according to claim 1, characterized in that: The tension spring (204) is connected to the tension spring tire contact rod (2) via a transition tube (203).

3. The tire embryo automatic conveying robot contact device according to claim 2 is characterized in that: The limiting rod (102) and the threaded column (104) are both welded to the bracket (1).

4. The tire embryo automatic conveying robot contacting device according to claim 3 is characterized in that: The flat end of the transition tube (203) is welded to the short arm (4) of the tension spring tire contact rod (2).

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