A tensioning rubber ring grabbing mechanism and rubber ring automatic adhesion equipment

Abstract

The present invention discloses a tensioning rubber ring grabbing mechanism and an automatic rubber ring adhesion device, comprising a grabbing bracket, a tensioning punch, a tensioning sleeve, a material return barrel, a tensioning drive mechanism and a material return drive mechanism. The tensioning sleeve is vertically fixedly mounted on the grabbing bracket, a tensioning hole penetrating the tensioning sleeve is provided at the center of the tensioning sleeve, the tensioning punch is slidably mounted in the tensioning hole, the material return barrel is sleeved on the tensioning sleeve and slidably cooperates with the grabbing bracket, the tensioning drive mechanism and the material return drive mechanism are respectively arranged on the grabbing bracket, the tensioning drive mechanism is transmission-connected to the tensioning punch, and the material return drive mechanism is transmission-connected to the material return barrel. The tensioning sleeve is inserted into the inner ring of the rubber ring, and the tensioning punch causes the tensioning sleeve to expand and fix the rubber ring inside the rubber ring, without pinching the bottom surface of the rubber ring, and with zero contact with the rubber layer, thereby ensuring the adhesion strength of the rubber layer; avoiding damage and deformation of the rubber ring caused by excessive deformation of the rubber ring, improving the yield rate, reducing production costs, and improving production efficiency. It does not require manual operation, is easy to use, and has precise positioning.

Description

Technical Field

[0001] The present invention relates to the technical field of automation equipment, and in particular to a tensioned rubber ring grabbing mechanism and an automatic rubber ring adhering device. Background Art

[0002] Rubber rings are typically installed between screws and components to provide sealing and shock absorption, or directly attached to components to provide shock absorption, cushioning, and protect them from wear. To facilitate fixing, rubber rings often have a pre-adhesive layer on the back, which is used to position the rubber ring or directly fix it. Traditionally, rubber ring installation involves manual application. Before application, the rubber ring needs to be torn off the release paper. During the tearing process, the human hand inevitably touches a certain area of ​​the rubber layer. Because human hands carry impurities such as dust and oil, these impurities stick to the rubber layer after contact, resulting in a decrease in the adhesive layer's adhesion, easy detachment, and poor stability. This is especially true for rubber rings with smaller diameters, where the rubber layer itself has a small area and the contaminated area accounts for a large proportion, which has a more serious impact on adhesion. Therefore, tools such as tweezers are needed to clamp the rubber ring to reduce the contact area. However, this operation is cumbersome and inefficient, and manual application and positioning are imprecise. The rubber ring attaching devices in the prior art all adopt a clamping method, but the clamping force is difficult to control. Especially when clamping rubber rings made of relatively soft materials, the rubber rings are easily deformed, resulting in a high failure rate. Therefore, it is necessary to improve it. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a tensioning rubber ring grabbing mechanism and an automatic rubber ring adhesion device, which are convenient for grabbing the rubber ring, do not damage the rubber ring, do not pollute the rubber layer, fully automatic attachment, high work efficiency, and precise pasting positioning.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a tensioning rubber ring grabbing mechanism, including a grabbing bracket, a tensioning punch, a tensioning sleeve, a material return barrel, a tensioning drive mechanism and a material return drive mechanism. The tensioning sleeve is vertically fixed on the grabbing bracket, and a tensioning hole that penetrates the tensioning sleeve is provided at the center of the tensioning sleeve. The tensioning punch is slidably installed in the tensioning hole up and down, and the material return barrel is sleeved on the tensioning sleeve and slidably cooperates with the grabbing bracket. The tensioning drive mechanism and the material return drive mechanism are respectively arranged on the grabbing bracket. The tensioning drive mechanism is transmission-connected to the tensioning punch, and the material return drive mechanism is transmission-connected to the material return barrel.

[0005] In a further technical solution, a tensioning part is provided at the lower part of the tensioning sleeve, and the tensioning part includes a plurality of elastic tensioning units integrally formed in the tensioning sleeve. The elastic tensioning units are arranged at intervals along the circumferential direction, and the outer side of the lower part of the elastic tensioning unit is bent inward from top to bottom to form a guide arc surface, and a fixing groove is provided above the guide arc surface.

[0006] In a further technical solution, the tensioning drive mechanism includes a tensioning drive cylinder and a tensioning pull block, the tensioning drive cylinder is fixedly mounted on the side of the grabbing bracket, the tensioning pull block is transmission-connected to the tensioning drive cylinder, a tensioning surface and a loose claw surface are provided on the upper part of the tensioning pull block, a height difference is provided between the tensioning surface and the loose claw surface, the horizontal height of the tensioning surface is lower than the horizontal height of the loose claw surface, a tensioning guide surface is provided between the tensioning surface and the loose claw surface, the tensioning punch is slidably cooperated with the tensioning surface, the tensioning guide surface and the loose claw surface, so as to realize the sliding of the tensioning punch in the vertical direction;

[0007] The material unloading drive mechanism includes a material unloading drive cylinder and a material unloading pull block. The material unloading drive cylinder is fixedly installed on the side of the grabbing bracket. The material unloading pull block is transmission-connected to the material unloading drive cylinder. A material unloading surface and a grabbing surface are provided on the upper part of the material unloading pull block. There is a height difference between the material unloading surface and the grabbing surface. The horizontal height of the material unloading surface is lower than the horizontal height of the grabbing surface. A material unloading guide surface is provided between the material unloading surface and the grabbing surface. The material unloading barrel slides with the grabbing surface, the material unloading guide surface and the material unloading surface to realize the sliding of the material unloading barrel in the vertical direction.

[0008] In a further technical solution, the upper portion of the tensioning block is provided with at least two loose claw surfaces and at least one tensioning surface, the two loose claw surfaces are respectively provided on the left and right sides of the tensioning surface, and two tensioning guide surfaces are respectively provided between the two loose claw surfaces and the tensioning surface;

[0009] The upper part of the material stripping block is provided with at least two gripping surfaces and at least one material stripping surface. The two gripping surfaces are respectively provided on the left and right sides of the material stripping surface. Two material stripping guide surfaces are respectively provided between the two gripping surfaces and the material stripping surface.

[0010] In a further technical solution, a tensioning chute penetrating the tensioning block is provided in the middle of the tensioning block along the length direction of the tensioning block, a tensioning transmission part is provided on the upper part of the tensioning punch rod, the tensioning punch rod passes through the tensioning chute and is inserted into the tensioning hole, the tensioning transmission part abuts against the tensioning block, the tensioning transmission part slides with the tensioning surface, the tensioning guide surface and the loose claw surface, and a tensioning elastic member is provided between the tensioning transmission part and the grabbing bracket;

[0011] A material return chute is provided in the middle of the material return block along the length direction of the material return block, and the material return transmission part is provided on the upper part of the material return cylinder. The material return cylinder slides up and down through the material return chute and is installed on the grabbing bracket. The material return transmission part presses against the material return block, and the material return transmission part slides with the grabbing surface, the material return guide surface and the material surface. A material return elastic part is provided between the material return transmission part and the grabbing bracket.

[0012] In a further technical solution, the grabbing bracket includes an upper seat, an upper splint, a supporting plate and a plurality of limiting columns. The upper splint is connected to the upper seat, and the upper splint is connected to the supporting plate through various limiting columns. A material withdrawal mounting hole is provided in the center of the supporting plate, and a material withdrawal cylinder is slidably installed in the material withdrawal mounting hole. A grabbing sliding hole is provided in the center of the material withdrawal cylinder, and the upper part of the tensioning sleeve is fixedly installed on the upper splint, and the lower part of the tensioning sleeve is inserted into the grabbing sliding hole. A tightening mounting hole is provided in the center of the upper splint, and the tensioning sleeve is fixedly installed in the tightening mounting hole. The tightening mounting hole is connected to the tightening hole, and the tightening punch passes through the tightening mounting hole and is inserted into the tightening hole.

[0013] The tensioning pull block is slidably installed between the upper clamping plate and the upper seat, and the material stripping pull block is slidably installed between the upper clamping plate and the supporting plate. The upper end of the tensioning elastic member abuts the upper seat, and the lower end of the tensioning elastic member abuts the tensioning transmission part. The upper end of the material stripping elastic member abuts the upper clamping plate, and the lower end of the material stripping elastic member abuts the material stripping transmission part.

[0014] In a further technical solution, the tensioning drive cylinder is fixedly installed on the first side of the grabbing bracket, the material withdrawal drive cylinder is fixedly installed on the second side of the grabbing bracket, the first side of the grabbing bracket and the second side of the grabbing bracket are arranged opposite to each other, and a pull block mounting groove is provided at the lower part of the upper seat, and a tensioning mounting groove is vertically provided on the upper seat corresponding to the position of the tensioning punch rod. The tensioning mounting groove is connected with the pull block mounting groove, the tensioning transmission part is slidably installed in the tensioning mounting groove, the tensioning pull block is slidably installed in the pull block mounting groove, and the lower part of the upper seat is fixedly connected to the upper part of the upper splint.

[0015] In a further technical solution, the outer diameter of the tensioning transmission part is larger than the outer diameter of the tensioning punch rod, the outer edge of the lower part of the tensioning transmission part is inclined inward from top to bottom and is provided with a tensioning transmission inclined surface, and the tensioning transmission inclined surface is cooperated with the tensioning pull block, and the outer diameter of the material withdrawal transmission part is larger than the outer diameter of the material withdrawal tube, and the outer edge of the lower part of the material withdrawal transmission part is inclined inward from top to bottom and is provided with a material withdrawal transmission inclined surface, and the material withdrawal transmission inclined surface is cooperated with the material withdrawal pull block.

[0016] In a further technical solution, the rubber ring attaching device is provided with a grabbing state and a material returning state.

[0017] In the grabbing state, the tensioning transmission part presses against the tensioning surface, the tensioning punch moves downward to the tensioning part, the tensioning punch presses against the inner wall of each elastic tensioning unit, the material withdrawal transmission part presses against the grabbing surface, and the tensioning part protrudes from the lower end surface of the material withdrawal barrel.

[0018] In the material-returning state, the tensioning transmission part presses against the loose claw surface, the tensioning punch moves upward out of the tensioning part, the material-returning transmission part presses against the material-returning surface, and the material-returning cylinder moves downward to enable the tensioning part to slide into the grabbing sliding hole.

[0019] A rubber ring automatic adhesion device includes a frame, a workbench, at least one workpiece fixture for fixing parts, a feeding mechanism and a rubber ring grabbing mechanism. The workbench is fixedly installed on the upper part of the frame, the workpiece fixture and the feeding mechanism are respectively installed on the upper surface of the workbench, the workbench or the frame is provided with at least one manipulator, each manipulator is equipped with at least one rubber ring grabbing mechanism, the grabbing bracket is fixedly installed on the manipulator, the feeding mechanism includes a lower pad, a discharge bottom plate and a clamping plate, the lower pad is fixedly installed on the workbench, the discharge bottom plate is fixedly installed on the lower pad, at least two positioning pins are provided on the upper part of the discharge bottom plate, the clamping plate is movably installed on the discharge bottom plate, and the discharge bottom plate is provided with multiple discharge ports at intervals.

[0020] After adopting the above structure, the advantages of the present invention compared with the prior art are: the tensioning sleeve is inserted into the inner ring of the rubber ring, and the tensioning punch slides downward to expand the tensioning sleeve in the rubber ring to fix the rubber ring. There is no need to pinch the bottom surface of the rubber ring, and there is zero contact with the rubber layer, thereby ensuring the bonding strength of the rubber layer; the tensioning gripping makes it easy to control the gripping force of the rubber ring, thereby avoiding excessive deformation of the rubber ring causing damage and deformation of the rubber ring, improving the yield rate, and reducing production costs; the rubber ring is pushed out and pressed against the component by the downward movement of the unloading barrel, and the unloading barrel presses and tightens the rubber ring while unloading the material, thereby improving the success rate of bonding, shortening the pressing process, and improving production efficiency; the robot drives the rubber ring grabbing mechanism to automatically stick the rubber ring, without the need for manual operation, easy to use, and precise positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the rubber ring grabbing mechanism of the present invention;

[0024] Figure 3 is an exploded view of the rubber ring grabbing mechanism of the present invention;

[0025] Figure 4 This is a cross-sectional view of the rubber ring grabbing mechanism of the present invention in the material-returning state;

[0026] Figure 5 is a cross-sectional view of the rubber ring grabbing mechanism of the present invention in the grabbing state;

[0027] Figure 6 It is a structural schematic diagram of the tensioning punch, tensioning sleeve and ejection barrel of the present invention;

[0028] Figure 7 This is a cross-sectional view of the tensioning punch, tensioning sleeve and material withdrawal barrel of the present invention in the material withdrawal state;

[0029] Figure 8 This is a cross-sectional view of the tensioning punch, tensioning sleeve and ejection barrel of the present invention in the grasping state;

[0030] Figure 9 It is a structural schematic diagram of the tension sleeve of the present invention.

[0031] In the picture:

[0032] 1 frame, 11 workbench, 13 workpiece fixture, 14 manipulator, 15 feeding mechanism, 151 bottom plate, 152 discharge bottom plate, 153 clamping plate, 154 positioning pin, 155 discharge port;

[0033] 31 upper seat, 311 pull block mounting slot, 312 tensioning mounting slot, 32 upper splint, 321 tensioning mounting hole, 33 supporting plate, 331 material withdrawal mounting hole, 34 limiting column;

[0034] 4 tensioning punch rod, 41 tensioning transmission part, 42 tensioning transmission inclined surface;

[0035] 5 tensioning sleeve, 51 tensioning hole, 52 tensioning portion, 521 elastic tensioning unit, 522 guide arc surface, 53 fixing groove, 54 tensioning elastic member;

[0036] 6 material return cylinder, 61 material return transmission part, 62 material return transmission inclined surface, 63 grabbing sliding hole, 64 material return elastic member;

[0037] 7 tensioning drive mechanism, 71 tensioning drive cylinder, 72 tensioning pull block, 721 tensioning surface, 722 release claw surface, 723 tensioning guide surface, 724 tensioning slideway;

[0038] 8. Material return drive mechanism, 81. Material return drive cylinder, 82. Material return pull block, 821. Material return surface, 822. Grasping surface, 823. Material return guide surface, 824. Material return chute. DETAILED DESCRIPTION

[0039] The following are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

[0040] A tightening rubber ring grabbing mechanism, such as Figures 2 to 9 As shown, it includes a grabbing bracket, a tensioning punch 4, a tensioning sleeve 5, a material return barrel 6, a tensioning drive mechanism 7 and a material return drive mechanism 8. The tensioning sleeve 5 is vertically fixed on the grabbing bracket. The center of the tensioning sleeve 5 is provided with a tensioning hole 51 that passes through the tensioning sleeve 5. The tensioning punch 4 is slidably installed in the tensioning hole 51 up and down. The material return barrel 6 is sleeved on the tensioning sleeve 5 and slidably cooperates with the grabbing bracket. The tensioning drive mechanism 7 and the material return drive mechanism 8 are respectively provided on the grabbing bracket. The tensioning drive mechanism 7 is transmission-connected to the tensioning punch 4, and the material return drive mechanism 8 is transmission-connected to the material return barrel 6.

[0041] The adhesive layer of the adhesive layer is not easily deformed due to the manual operation of the adhesive and the use of tools such as tweezers and clamps to fix the adhesive, thereby improving the adhesive strength of the adhesive layer and reducing the production cost.

[0042] Specifically, a tensioning portion 52 is provided at the lower portion of the tensioning sleeve 5, and the tensioning portion 52 includes a plurality of elastic tensioning units 521 integrally formed on the tensioning sleeve 5. The elastic tensioning units 521 are arranged at intervals along the circumferential direction, and the outer side of the lower portion of the elastic tensioning unit 521 is bent inward from top to bottom to form a guide arc surface 522, and a fixing groove 53 is provided above the guide arc surface 522. With the help of the guiding arc surface 522, the tensioning part 52 is smoothly inserted into the inner ring of the rubber ring, so that the fixing groove 53 and the rubber ring are at the same horizontal plane. The outer diameter of the tensioning part 52 is smaller than the outer diameter of the tensioning sleeve 5. When the tensioning punch 4 is inserted into the tensioning part 52, the tensioning punch 4 pushes each elastic tensioning unit 521 outward, and the elastic tensioning unit 521 bends outward from top to bottom, thereby setting the rubber ring on the fixing groove 53, tightening and grabbing the rubber ring, and adjusting the tightening clamping force by controlling the depth of the tensioning punch 4 inserted into the tensioning part 52, which is convenient for fixing rubber rings of different materials and weights, thereby improving adaptability.

[0043] Specifically, the tensioning drive mechanism 7 includes a tensioning drive cylinder 71 and a tensioning pull block 72. The tensioning drive cylinder 71 is fixedly installed on the side of the grabbing bracket, and the tensioning pull block 72 is transmission-connected to the tensioning drive cylinder 71. The upper part of the tensioning pull block 72 is provided with a tensioning surface 721 and a loose claw surface 722. There is a height difference between the tensioning surface 721 and the loose claw surface 722. The horizontal height of the tensioning surface 721 is lower than the horizontal height of the loose claw surface 722. A tensioning guide surface 723 is provided between the tensioning surface 721 and the loose claw surface 722. The tensioning punch 4 slides with the tensioning surface 721, the tensioning guide surface 723 and the loose claw surface 722 to realize the tensioning punch 4 in the vertical direction Sliding; the material unloading drive mechanism 8 includes a material unloading drive cylinder 81 and a material unloading pull block 82. The material unloading drive cylinder 81 is fixedly installed on the side of the grabbing bracket. The material unloading pull block 82 is transmission-connected to the material unloading drive cylinder 81. The upper part of the material unloading pull block 82 is provided with a material unloading surface 821 and a grabbing surface 822. There is a height difference between the material unloading surface 821 and the grabbing surface 822. The horizontal height of the material unloading surface 821 is lower than the horizontal height of the grabbing surface 822. A material unloading guide surface 823 is provided between the material unloading surface 821 and the grabbing surface 822. The material unloading barrel 6 slides with the grabbing surface 822, the material unloading guide surface 823 and the material unloading surface 821 to realize the sliding of the material unloading barrel 6 in the vertical direction. The lateral displacement of the tensioning pull block 72 and the material-removing pull block 82 drives the tensioning punch 4 and the material-removing cylinder 6 to move in the vertical direction respectively, shortening the volume of the rubber ring grabbing mechanism, and adopting the tensioning drive cylinder 71 and the material-removing drive cylinder 81 as the power source to drive the tensioning pull block 72 and the material-removing pull block 82, which has a simple structure and low cost, and is convenient for controlling the formation of the tensioning pull block 72 and the material-removing pull block 82. Of course, the tensioning pull block 72 and the material-removing pull block 82 are not limited to being driven by the tensioning drive cylinder 71 and the material-removing drive cylinder 81, and can also be driven by power sources such as motors and oil cylinders.

[0044] Specifically, the top of the tensioning block 72 is provided with at least two release claw surfaces 722 and at least one tensioning surface 721. The two release claw surfaces 722 are respectively provided on the left and right sides of the tensioning surface 721, and two tensioning guide surfaces 723 are respectively provided between the two release claw surfaces 722 and the tensioning surface 721. The release claw surfaces 722 are respectively provided on the left and right sides of the tensioning surface 721. The top of the material stripping block 82 is provided with at least two gripping surfaces 822 and at least one material stripping surface 821. The two gripping surfaces 822 are respectively provided on the left and right sides of the material stripping surface 821, and two material stripping guide surfaces 823 are respectively provided between the two gripping surfaces 822 and the material stripping surface 821. Two gripping actions can be completed in one forward and backward movement of the tensioning block 72 and the material stripping block 82, thereby improving the gripping speed.

[0045] Specifically, the middle part of the tensioning block 72 is provided with a tensioning slot 724 that passes through the tensioning block 72 along the length direction of the tensioning block 72, and the upper part of the tensioning punch 4 is provided with a tensioning transmission part 41, and the tensioning punch 4 passes through the tensioning slot 724 and is inserted into the tensioning hole 51, and the tensioning transmission part 41 presses against the tensioning block 72, and the tensioning transmission part 41 slides with the tensioning surface 721, the tensioning guide surface 723 and the loose claw surface 722, and a tensioning elastic member is provided between the tensioning transmission part 41 and the grabbing bracket. Component 54; a material stripping chute 824 is provided in the middle of the material stripping block 82 along its length, passing through the material stripping block 82. A material stripping transmission unit 61 is provided on the upper portion of the material stripping barrel 6. The material stripping barrel 6 slides up and down through the material stripping chute 824 and is mounted on the grabbing bracket. The material stripping transmission unit 61 abuts against the material stripping block 82. The material stripping transmission unit 61 slides with the grabbing surface 822, the material stripping guide surface 823, and the material surface. A material stripping elastic member 64 is provided between the material stripping transmission unit 61 and the grabbing bracket. The tensioning punch 4 and the material stripping barrel 6 slide in the tensioning chute 724 and the material stripping chute 824, respectively. The tensioning block 72 and the tensioning punch 4 can maintain a reliable transmission connection, and the material stripping block 82 and the material stripping barrel 6 can maintain a reliable transmission connection, avoiding transmission failure caused by separation and improving reliability.

[0046] Specifically, the grabbing bracket includes an upper seat 31, an upper splint 32, a support plate 33 and a plurality of limiting columns 34. The upper splint 32 is connected to the upper seat 31, and the upper splint 32 is connected to the support plate 33 through various limiting columns 34. The center of the support plate 33 is provided with a material withdrawal mounting hole 331 that passes through the support plate 33, and the material withdrawal cylinder 6 is slidably mounted in the material withdrawal mounting hole 331. The center of the material withdrawal cylinder 6 is provided with a grabbing sliding hole 63 that passes through the material withdrawal cylinder 6. The upper part of the tensioning sleeve 5 is fixedly mounted on the upper splint 32, and the lower part of the tensioning sleeve 5 is inserted into the grabbing sliding hole 63. The center of the upper splint 32 is provided with a The tensioning mounting hole 321, the tensioning sleeve 5 is fixedly installed in the tensioning mounting hole 321, the tensioning mounting hole 321 is connected with the tensioning hole 51, the tensioning punch 4 passes through the tensioning mounting hole 321 and is inserted into the tensioning hole 51, the tensioning pull block 72 is slidably installed between the upper clamping plate 32 and the upper seat 31, the material withdrawal pull block 82 is slidably installed between the upper clamping plate 32 and the support plate 33, the upper end of the tensioning elastic member 54 abuts the upper seat 31, the lower end of the tensioning elastic member 54 abuts the tensioning transmission part 41, the upper end of the material withdrawal elastic member 64 abuts the upper clamping plate 32, and the lower end of the material withdrawal elastic member 64 abuts the material withdrawal transmission part 61. The material-removing elastic member 64 and the tensioning elastic member 54 are both coil springs. The material-removing elastic member 64 and the tensioning elastic member 54 respectively press against the material-removing cylinder 6 and the tensioning punch 4. The material-removing cylinder 6 and the tensioning punch 4 obtain downward pressure, so that the tensioning punch 4 has sufficient thrust to push the elastic tensioning unit 521, and the material-removing cylinder 6 obtains a greater pushing force, ensuring that the rubber ring can be pushed out of the tensioning sleeve 5 and maintain a certain pressure against the rubber ring, thereby improving stability and reliability.

[0047] Specifically, the tensioning drive cylinder 71 is fixedly installed on the first side of the grabbing bracket, and the material return drive cylinder 81 is fixedly installed on the second side of the grabbing bracket. The first side of the grabbing bracket and the second side of the grabbing bracket are arranged opposite to each other. A pull block mounting groove 311 is provided at the lower part of the upper seat 31, and a tensioning mounting groove 312 is vertically provided at the position of the upper seat 31 corresponding to the tensioning punch 4. The tensioning mounting groove 312 is connected with the pull block mounting groove 311, and the tensioning transmission part 41 is slidably installed in the tensioning mounting groove 312. The tensioning pull block 72 is slidably installed in the pull block mounting groove 311. The lower part of the upper seat 31 is fixedly connected to the upper part of the upper clamping plate 32. The tensioning elastic member 54 is embedded in the tensioning mounting groove 312 to prevent the tensioning elastic member 54 from lateral displacement, thereby improving reliability. Preferably, an upper fixed column extending downward is provided at the upper end of the tensioning mounting groove 312, and an upwardly protruding lower fixed column is provided at the top of the tensioning transmission part 41. The tensioning elastic member 54 is respectively sleeved on the upper fixed column and the lower fixed column to further limit and fix it, thereby improving reliability; and the material withdrawal elastic member 64 is sleeved on the tensioning sleeve 5.

[0048] Specifically, the outer diameter of the tensioning transmission part 41 is larger than the outer diameter of the tensioning punch 4, and the outer edge of the lower part of the tensioning transmission part 41 is inclined inward from top to bottom and is provided with a tensioning transmission inclined surface 42, and the tensioning transmission inclined surface 42 is abutted against the tensioning pull block 72. The outer diameter of the material withdrawal transmission part 61 is larger than the outer diameter of the material withdrawal cylinder 6, and the outer edge of the lower part of the material withdrawal transmission part 61 is inclined inward from top to bottom and is provided with a material withdrawal transmission inclined surface 62, and the material withdrawal transmission inclined surface 62 is abutted against the material withdrawal pull block 82. The contact area between the tensioning pull block 72 and the material return pull block 82 is reduced by the tensioning transmission inclined surface 42 and the material return transmission inclined surface 62, thereby reducing friction. In addition, according to different models and sizes of the rubber ring, it is necessary to replace the tensioning sleeve 5, the material return barrel 6 and the tensioning punch 4 with different diameters. Since the material return transmission inclined surface 62 and the tensioning transmission inclined surface 42 can adapt to the same material return pull block 82 and the tensioning pull block 72, there is no need to replace the material return pull block 82 and the tensioning pull block 72. Only the tensioning sleeve 5, the material return barrel 6 and the tensioning punch 4 need to be replaced, which increases flexibility, reduces the replacement of parts and reduces the cost of use.

[0049] Specifically, the rubber ring attaching device is provided with a grabbing state and a material returning state.

[0050] Crawl status, such as Figure 5 and Figure 8As shown, the tensioning drive cylinder 71 drives the tensioning pull block 72 to move, so that the tensioning transmission part 41 is pressed against the tensioning surface 721. At the same time, the material return drive cylinder 81 drives the material return pull block 82 to move, so that the material return transmission part 61 is pressed against the grabbing surface 822. The tensioning part 52 protrudes from the lower end surface of the material return cylinder 6. Under the action of the tensioning elastic member 54, the tensioning punch 4 moves downward to the tensioning part 52. The tensioning punch 4 is pressed against the inner wall of each elastic tensioning unit 521. The tensioning punch 4 pushes each elastic tensioning unit 521 outward, and the elastic tensioning unit 521 bends outward from top to bottom, thereby setting the rubber ring on the fixing groove 53 to complete the grabbing of the rubber ring.

[0051] Return status, such as Figure 4 and Figure 7 As shown, the tensioning drive cylinder 71 drives the tensioning pull block 72 to move, and the tensioning transmission part 41 is pressed against the loose claw surface 722 by the tensioning surface 721 through the tensioning guide surface 723, so that the tensioning punch 4 moves upward out of the tensioning part 52. At the same time, the material withdrawal drive cylinder 81 drives the material withdrawal pull block 82 to move, and the material withdrawal transmission part 61 is pressed against the material withdrawal surface 821 by the grabbing surface 822 through the material withdrawal guide surface 823. The material withdrawal cylinder 6 moves downward under the action of the material withdrawal elastic part 64, so that the tensioning part 52 slides into the grabbing slide hole 63, and at the same time pushes the rubber ring out of the tensioning part 52.

[0052] An automatic adhesive device for rubber rings, such as Figures 1 to 9As shown, it includes a frame 1, a workbench 11, at least one workpiece fixture 13 for fixing parts, a feeding mechanism 15 and a rubber ring grabbing mechanism. The workbench 11 is fixedly installed on the upper part of the frame 1, and the workpiece fixture 13 and the feeding mechanism 15 are respectively installed on the upper surface of the workbench 11. The workbench 11 or the frame 1 is provided with at least one manipulator 14, each manipulator 14 is installed with at least one rubber ring grabbing mechanism, and the grabbing bracket is fixedly installed on the manipulator 14. The feeding mechanism 15 includes a lower pad 151, a discharge bottom plate 152 and a clamping plate 153. The lower pad 151 is fixedly installed on the workbench 11, and the discharge bottom plate 152 is fixedly installed on the lower pad 151. At least two positioning pins 154 are provided on the upper part of the discharge bottom plate 152. The clamping plate 153 is movably installed on the discharge bottom plate 152. The discharge bottom plate 152 is provided with multiple discharge ports 155 at intervals. Preferably, one side edge of the clamping plate 153 is rotationally connected to one side edge of the discharge base plate 152, the clamping plate 153 is rotated open, and then the rubber ring material plate is placed on the discharge base plate 152, and two positioning pins 154 are inserted into the inner rings of the two rubber rings for positioning, and then the clamping plate 153 is rotated closed to clamp and fix the rubber ring material plate, and a buckle is provided on the other side where the clamping plate 153 and the discharge base plate 152 are rotationally connected, and the clamping plate 153 and the discharge base plate 152 are connected by the buckle, thereby locking the clamping plate 153 to prevent it from opening accidentally. The manipulator 14 drives the rubber ring grabbing mechanism to move to the feeding mechanism 15, so that the tensioning part 52 of the tensioning sleeve 5 passes through the discharge port 155 and is inserted into the inner ring of the rubber ring. After grabbing the rubber ring, the rubber ring grabbing mechanism is driven to move to the workpiece fixture 13 and attaches the rubber ring to the workpiece fixture 13. The manipulator 14 drives the rubber ring grabbing mechanism to automatically stick the rubber ring, without manual operation, easy to use and accurate positioning.

[0053] Preferably, a plurality of rubber ring grabbing mechanisms are arranged at intervals on one manipulator 14 according to installation requirements, thereby improving production efficiency, or a plurality of manipulators 14 are installed on the workbench 11 to improve work efficiency.

[0054] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A tensioning rubber ring grabbing mechanism, characterized by: The invention comprises a grabbing bracket, a tensioning punch rod (4), a tensioning sleeve (5), a material-returning cylinder (6), a tensioning driving mechanism (7) and a material-returning driving mechanism (8); the tensioning sleeve (5) is vertically fixedly mounted on the grabbing bracket; a tensioning hole (51) penetrating the tensioning sleeve (5) is provided at the center of the tensioning sleeve (5); the tensioning punch rod (4) is slidably mounted in the tensioning hole (51) up and down; the material-returning cylinder (6) is sleeved on the tensioning sleeve (5) and slidably matched with the grabbing bracket; the tensioning driving mechanism (7) and the material-returning driving mechanism (8) are respectively arranged on the grabbing bracket; the tensioning driving mechanism (7) is transmission-connected to the tensioning punch rod (4); and the material-returning driving mechanism (8) is transmission-connected to the material-returning cylinder (6); A tensioning portion (52) is provided at the lower portion of the tensioning sleeve (5), and the tensioning portion (52) includes a plurality of elastic tensioning units (521) integrally formed on the tensioning sleeve (5), and the elastic tensioning units (521) are arranged at intervals along the circumferential direction. The outer side of the lower portion of the elastic tensioning unit (521) is bent inward from top to bottom to form a guide arc surface (522), and a fixing groove (53) is provided above the guide arc surface (522); The tensioning drive mechanism (7) comprises a tensioning drive cylinder (71) and a tensioning pull block (72). The tensioning drive cylinder (71) is fixedly mounted on the side of the grabbing bracket. The tensioning pull block (72) is transmission-connected to the tensioning drive cylinder (71). A tensioning surface (721) and a loose claw surface (722) are provided on the upper portion of the tensioning pull block (72). There is a height difference between the tensioning surface (721) and the loose claw surface (722). The horizontal height of the tensioning surface (721) is lower than the horizontal height of the loose claw surface (722). A tensioning guide surface (723) is provided between the tensioning surface (721) and the loose claw surface (722). The tensioning punch (4) is in sliding cooperation with the tensioning surface (721), the tensioning guide surface (723) and the loose claw surface (722) to enable the tensioning punch (4) to slide in the vertical direction. The material-removing driving mechanism (8) comprises a material-removing driving cylinder (81) and a material-removing pulling block (82). The material-removing driving cylinder (81) is fixedly mounted on the side of the grabbing bracket. The material-removing pulling block (82) is transmission-connected to the material-removing driving cylinder (81). A material-removing surface (821) and a grabbing surface (822) are provided on the upper portion of the material-removing pulling block (82). There is a height difference between the material-removing surface (821) and the grabbing surface (822). The horizontal height of the material-removing surface (821) is lower than the horizontal height of the grabbing surface (822). A material-removing guiding surface (823) is provided between the material-removing surface (821) and the grabbing surface (822). The material-removing barrel (6) is slidably matched with the grabbing surface (822), the material-removing guiding surface (823) and the material-removing barrel (821) to realize sliding of the material-removing barrel (6) in the vertical direction.

2. The tensioning rubber ring grabbing mechanism according to claim 1, characterized in that: The upper portion of the tensioning block (72) is provided with at least two loose claw surfaces (722) and at least one tensioning surface (721), the two loose claw surfaces (722) are respectively provided on the left and right sides of the tensioning surface (721), and two tensioning guide surfaces (723) are respectively provided between the two loose claw surfaces (722) and the tensioning surface (721); The upper portion of the material-removing pull block (82) is provided with at least two gripping surfaces (822) and at least one material-removing surface (821), the two gripping surfaces (822) are respectively provided on the left and right sides of the material-removing surface (821), and two material-removing guide surfaces (823) are respectively provided between the two gripping surfaces (822) and the material-removing surface (821).

3. The tensioning rubber ring grabbing mechanism according to claim 2, characterized in that: The middle part of the tensioning block (72) is provided with a tensioning slot (724) passing through the tensioning block (72) along the length direction of the tensioning block (72); the upper part of the tensioning punch (4) is provided with a tensioning transmission part (41); the tensioning punch (4) passes through the tensioning slot (724) and is inserted into the tensioning hole (51); the tensioning transmission part (41) abuts against the tensioning block (72); the tensioning transmission part (41) is in sliding cooperation with the tensioning surface (721), the tensioning guide surface (723) and the loose claw surface (722); a tensioning elastic part (54) is provided between the tensioning transmission part (41) and the grabbing bracket; The middle part of the material-removing block (82) is provided with a material-removing chute (824) passing through the material-removing block (82) along the length direction of the material-removing block (82), and the upper part of the material-removing cylinder (6) is provided with a material-removing transmission part (61), and the material-removing cylinder (6) passes through the material-removing chute (824) and is slidably installed on the grabbing bracket. The material-removing transmission part (61) presses against the material-removing block (82), and the material-removing transmission part (61) is slidably matched with the grabbing surface (822), the material-removing guide surface (823) and the material-removing surface. A material-removing elastic part (64) is provided between the material-removing transmission part (61) and the grabbing bracket.

4. The tensioning rubber ring grabbing mechanism according to claim 3, characterized in that: The grabbing bracket includes an upper seat (31), an upper clamping plate (32), a supporting plate (33) and a plurality of limiting columns (34). The upper clamping plate (32) is connected to the upper seat (31). The upper clamping plate (32) and the supporting plate (33) are connected through the limiting columns (34). The center of the supporting plate (33) is provided with a material-returning mounting hole (331) that passes through the supporting plate (33). The material-returning cylinder (6) is slidably installed in the material-returning mounting hole (331). The center of the material-returning cylinder (6) is provided with a grabbing plate that passes through the material-returning cylinder (6). Take the sliding hole (63), the upper part of the tensioning sleeve (5) is fixedly installed on the upper clamping plate (32), the lower part of the tensioning sleeve (5) is inserted into the grabbing sliding hole (63), the center part of the upper clamping plate (32) is provided with a tensioning mounting hole (321) that passes through the upper clamping plate (32), the tensioning sleeve (5) is fixedly installed in the tensioning mounting hole (321), the tensioning mounting hole (321) is communicated with the tensioning hole (51), the tensioning punch (4) passes through the tensioning mounting hole (321) and is inserted into the tensioning hole (51), The tensioning pull block (72) is slidably installed between the upper clamping plate (32) and the upper seat (31), and the material-removing pull block (82) is slidably installed between the upper clamping plate (32) and the supporting plate (33). The upper end of the tensioning elastic member (54) abuts against the upper seat (31), and the lower end of the tensioning elastic member (54) abuts against the tensioning transmission part (41). The upper end of the material-removing elastic member (64) abuts against the upper clamping plate (32), and the lower end of the material-removing elastic member (64) abuts against the material-removing transmission part (61).

5. The tensioning rubber ring grabbing mechanism according to claim 4, characterized in that: The tensioning drive cylinder (71) is fixedly installed on the first side of the grabbing bracket, and the material-returning drive cylinder (81) is fixedly installed on the second side of the grabbing bracket. The first side of the grabbing bracket and the second side of the grabbing bracket are arranged opposite to each other. A pull block mounting groove (311) is provided at the lower part of the upper seat (31), and a tensioning mounting groove (312) is vertically provided on the upper seat (31) corresponding to the position of the tensioning punch (4). The tensioning mounting groove (312) is connected to the pull block mounting groove (311), and the tensioning transmission part (41) is slidably installed in the tensioning mounting groove (312). The tensioning pull block (72) is slidably installed in the pull block mounting groove (311). The lower part of the upper seat (31) is fixedly connected to the upper part of the upper clamping plate (32).

6. The tensioning rubber ring grabbing mechanism according to claim 5, characterized in that: The outer diameter of the tensioning transmission part (41) is larger than the outer diameter of the tensioning punch rod (4), and the outer edge of the lower part of the tensioning transmission part (41) is inclined inward from top to bottom and is provided with a tensioning transmission inclined surface (42), and the tensioning transmission inclined surface (42) is abutted against the tensioning pull block (72). The outer diameter of the material withdrawal transmission part (61) is larger than the outer diameter of the material withdrawal cylinder (6), and the outer edge of the lower part of the material withdrawal transmission part (61) is inclined inward from top to bottom and is provided with a material withdrawal transmission inclined surface (62), and the material withdrawal transmission inclined surface (62) is abutted against the material withdrawal pull block (82).

7. The tensioning rubber ring grabbing mechanism according to claim 4, characterized in that: The rubber ring attaching device is provided with a grabbing state and a material returning state. In the grabbing state, the tensioning transmission part (41) abuts against the tensioning surface (721), the tensioning punch (4) moves downward to the tensioning part (52), the tensioning punch (4) abuts against the inner wall of each elastic tensioning unit (521), the material-removing transmission part (61) abuts against the grabbing surface (822), and the tensioning part (52) protrudes from the lower end surface of the material-removing barrel (6). In the material-returning state, the tensioning transmission part (41) abuts against the loose claw surface (722), the tensioning punch (4) moves upward out of the tensioning part (52), the material-returning transmission part (61) abuts against the material-returning surface (821), and the material-returning cylinder (6) moves downward to enable the tensioning part (52) to slide into the grabbing sliding hole (63).

8. An automatic rubber ring bonding device, characterized by: comprising the rubber ring grabbing mechanism according to any one of claims 1 to 7, The machine also includes a frame (1), a workbench (11), at least one workpiece fixture (13) for fixing parts, and a feeding mechanism (15), wherein the workbench (11) is fixedly mounted on the upper part of the frame (1), the workpiece fixture (13) and the feeding mechanism (15) are respectively mounted on the upper surface of the workbench (11), the workbench (11) or the frame (1) is provided with at least one manipulator (14), each manipulator (14) is equipped with at least one of the rubber ring grabbing mechanisms, and the grabbing bracket is fixedly mounted on the upper part of the frame (1). A manipulator (14) and a feeding mechanism (15) include a lower pad (151), a discharge base plate (152) and a clamping plate (153), wherein the lower pad (151) is fixedly mounted on a workbench (11), the discharge base plate (152) is fixedly mounted on the lower pad (151), at least two positioning pins (154) are provided on the upper portion of the discharge base plate (152), the clamping plate (153) is movably mounted on the discharge base plate (152), and the discharge base plate (152) is provided with a plurality of discharge ports (155) at intervals.

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