Automatic feeding and discharging device for easy-to-open cover

Abstract

The utility model provides an automatic feeding and discharging device for easy-open covers, and relates to the field of easy-open cover transfer devices. The clamping set comprises a rotating shaft, material taking rods and material supporting hooks, the circle center of the rotating shaft is rotationally connected with the assembling plate, one ends of the material taking rods are eccentrically fixed to the end face of the rotating shaft, the material supporting hooks are fixed to the other ends of the material taking rods, and a clamping space is defined by the multiple material taking rods; the driving group is used for driving the at least three rotating shafts to synchronously rotate, enabling the plurality of material taking rods to move so as to synchronously reduce or enlarge the clamping space, driving the four material taking rods to synchronously rotate through eccentric design, and enabling the material supporting hooks to automatically form an avoiding phase and a grabbing phase in the rotating process by utilizing the characteristic of an eccentric motion track; interference-free space avoiding and accurate positioning of the material taking rod are achieved, a traditional multi-air-cylinder driving structure is simplified through a four-rod rotating mechanism, and the equipment failure rate is reduced; the eccentric track design of the material supporting hook ensures that the grabbing position is accurately matched with the opening and closing action of the mold, and the cover body is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to easy -open cover transfer device field especially relates to an easy -open cover automatic feeding and discharging device. BACKGROUND

[0002] The existing easy -open cover clamping device adopts cylinder drive or complex connecting rod mechanism to realize material taking action, and has the following technical defects: the traditional mechanical hand structure is complex, leads to maintenance difficulty, the precision of the coordinated control of multiple cylinders is low and energy consumption is higher, the fixed movement track leads to insufficient avoidance space, and the positioning deviation of the material taking hook easily causes the deformation of the cover body. Especially in high -speed continuous operation, the existing device is difficult to synchronously complete accurate avoidance and stable grabbing action, and the production efficiency is restricted to improve. The scheme of part of rotating material taking rod also needs to additionally increase the compensation mechanism due to unreasonable rotating shaft design, which causes the interference between the material taking hook track and the mold. SUMMARY

[0003] In order to overcome the above-mentioned defects of prior art, the embodiment of the utility model provides an easy -open cover automatic feeding and discharging device, and the technical problems to be solved by the utility model are: the existing easy -open cover clamping device has the technical defects of complex structure, low positioning precision, insufficient avoidance space and difficult to adapt to high -speed production.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: an easy -open cover automatic feeding and discharging device, which is connected with the small arm of the mechanical arm through the assembly plate;Clamping group, including rotating shaft, material taking rod and material supporting hook, the center of the rotating shaft is rotatably connected with the assembly plate, one end of the material taking rod is eccentrically fixed on the end face of the rotating shaft, the material supporting hook is fixed on the other end of the material taking rod, and the plurality of material taking rods are combined to form a clamping space;Driving group is used to drive at least three rotating shafts to rotate synchronously, so that the plurality of material taking rods move to synchronously reduce or expand the clamping space.

[0005] In a preferred embodiment, the driving group includes a cylinder, a straight plate and a primary gear, the cylinder body and the assembly plate are fixed, the cylinder body is slidably connected with a movable rod, the end of the movable rod is fixed with the straight plate, the two side walls of the straight plate are provided with teeth, each rotating shaft is fixed with a primary gear, and the primary gear and the corresponding side teeth are meshed and transmitted.

[0006] In a preferred embodiment, a pair of primary gears are arranged on the two sides of the cylinder, and the four primary gears are meshed with the corresponding side teeth on the straight plate.

[0007] In a preferred embodiment, the driving group includes a driving gear, a plurality of driven gears and a plurality of execution gears, the driving gear is fixedly connected with the output shaft of the motor, the motor is installed on the mechanical arm, the driving gear rotates through the meshing of the corresponding number of driven gears and execution gears, and the execution gear is fixed on the corresponding rotating shaft.

[0008] In a preferred embodiment, the number of rotating shafts is four, each rotating shaft is coaxially fixed with an execution gear, two pairs of execution gears are located on two diameters of the driving gear respectively, the driving gear and one pair of execution gears are driven through odd number of meshing, and the other pair of execution gears are driven through even number of meshing, and the directions of the adjacent two execution gears are opposite.

[0009] In a preferred embodiment, the nearest position of the material taking rod to the clamping space is the near rest point, and the farthest position is the far rest point, and the near rest end and the far rest end are located at two ends of one diameter of the rotating shaft.

[0010] In a preferred embodiment, the shape of the material supporting hook is a straight bar.

[0011] In a preferred embodiment, the material supporting hook is circular.

[0012] The technical effects and advantages of the present application are as follows:

[0013] The present application drives four material taking rods to rotate synchronously through eccentric design, and utilizes the eccentric trajectory characteristics to automatically form the avoiding phase and the grabbing phase of the material supporting hook in the rotating process, so as to realize the non-interference space avoidance and accurate positioning of the material taking rod. The four-rod synchronous rotating mechanism simplifies the traditional multi-cylinder driving structure and reduces the equipment failure rate; the eccentric trajectory design of the material supporting hook ensures the accurate cooperation between the grabbing position and the mold opening and closing action, and avoids the damage of the cover body; the overall transmission assembly adopts modular design, which not only improves the assembly efficiency, but also can adapt to different specifications of cover body production requirements by adjusting the eccentric distance, and comprehensively realizes the technical effects of high precision, high efficiency and high adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0014] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts. Among them:

[0015] Figure 1 It is a structure diagram of the feeding and discharging device of the present application.

[0016] Figure 2 It is a view from the oblique side of the feeding and discharging device of the present application.

[0017] Figure 3 It is a schematic diagram of the layout position of the three rotating shafts in the present application.

[0018] Figure 4 It is a schematic diagram of the position of the near rest point of the material taking rod close to the clamping space in the present application.

[0019] Figure 5The odd and even number of gear meshing diagram in the utility model.

[0020] Figure 6 The straight bar-shaped material supporting hook structure diagram in the utility model.

[0021] Figure 7 The circular material supporting hook structure diagram in the utility model.

[0022] The figure signs are: 10, assembly plate; 20, clamping group; 21, rotating shaft; 22, material taking rod; 23, material supporting hook; 30, driving group; 31, air cylinder; 32, straight moving plate; 33, primary gear. DETAILED DESCRIPTION

[0023] It is easy to understand that according to the technical scheme of the utility model, a person skilled in the art can propose a plurality of structure modes and implementation modes which can be replaced with each other without changing the essential spirit of the utility model. Therefore, the following detailed description and the drawings are only exemplary description of the technical scheme of the utility model, and should not be regarded as the whole of the utility model or regarded as the limitation or restriction of the technical scheme of the utility model.

[0024] EMBODIMENT

[0025] As Figures 1-7 , the product mainly comprises an assembly plate 10, a clamping group 20 and a driving group 30.

[0026] The assembly plate 10 is used for being connected through fasteners and the movable end of a mechanical arm, so that the mechanical arm can drive the assembly plate 10, the clamping group 20 and the driving group 30 to move freely, and carry, grab or put down several stacks of easy-to-open covers.

[0027] The clamping group 20 comprises a rotating shaft 21, a material taking rod 22 and a material supporting hook 23, the rotating shaft 21 is rotatably connected with the assembly plate 10 through a bearing, one end of the material taking rod 22 is fixedly connected with the rotating shaft 21 eccentrically, and the other end is fixedly connected with the material supporting hook 23.

[0028] Preferably, the material supporting hook 23 is in a straight bar shape, as shown in Figure 6 .

[0029] Preferably, the material supporting hook 23 is in a circular plate structure, and the circular plate can be fixed at the end of the material taking rod 22 at the center or at a non-center, as shown in Figure 7 .

[0030] The first structure of the driving group 30 includes a cylinder 31, a straight plate 32, and a primary gear 33. The cylinder 31 includes a cylinder body and a movable rod. The cylinder body is fixed to the assembly plate 10 through a flange. One end of the movable rod is in sliding connection with the cylinder body, and the other end is fixedly connected with the straight plate 32. The straight plate 32 can slide linearly on the assembly plate 10. Teeth are arranged on both sides of the straight plate 32. Each rotating shaft 21 is fixedly connected with a corresponding primary gear 33. The teeth on the straight plate 32 are in meshing transmission with the primary gears 33. In this way, a row of teeth and a corresponding primary gear 33 are arranged on both sides of the cylinder 31 as a center line. When the movable rod of the cylinder 31 moves, the corresponding primary gear 33 can be driven to rotate synchronously through meshing, and in turn, the material taking rod 22 is driven to rotate. The cylinder is a prior art, and its structure itself will not be described in detail. Its movement state is controlled by a controller, and the control logic is also a prior art.

[0031] The space enclosed by the plurality of material taking rods 22 is defined as a clamping space. In the rotating process, the closest position of the material taking rod 22 to the clamping space is the near rest point, and the farthest position of the material taking rod 22 to the clamping space is the far rest point.

[0032] Preferably, the included angle between the near rest point and the far rest point is 180°.

[0033] In the initial state, the material taking rod 22 is at the far rest point. A plurality of material taking rods 22 are sleeved outside the target easy-open cover. Then, the rotating shaft 21 is rotated, so that the near rest point is gradually rotated and approaches the clamping space. In this process, the side wall of the material taking rod 22 clamps a stack of easy-open covers.

[0034] For example, when the number of material taking rods 22 is three, two material taking rods 22 are in meshing with the teeth on the same side of the straight plate 32, and the other material taking rod 22 is in meshing with the teeth on the other side of the straight plate 32. In this way, the material taking rods 22 on both sides can be rotated to clamp a stack of easy-open covers in the clamping space.

[0035] For example, when the number of material taking rods 22 is four, two material taking rods 22 are in meshing with the teeth on the same side of the straight plate 32, and the other two material taking rods 22 are in meshing with the teeth on the other side of the straight plate 32. In this way, the material taking rods 22 on both sides can be rotated to clamp a stack of easy-open covers in the clamping space.

[0036] Preferably, the rotation directions of the primary gears 33 on both sides of the straight plate 32 can be the same or opposite.

[0037] By analogy. It is found through comparison that the design of four material taking rods 22 is better in neutralization and is more suitable for the structure of the driving group 30.

[0038] The second structure of the driving group 30: the corresponding rotating shaft 21 is rotated by the gear group, specifically including the driving gear, the driven gear I, the driven gear II-I, the driven gear II-II, and the execution gear. The center of the driving gear is rotatably connected to the assembly plate 10 through the bearing, and the driving gear and the motor output shaft are fixedly connected. The motor is installed on the mechanical arm, and the execution gear and the corresponding rotating shaft 21 are fixedly connected. The motor structure is a prior art, which is controlled by a controller to control the operating state, and the control logic is also a prior art.

[0039] Among the two mutually perpendicular diameters, one diameter is provided with two driven gears I, and the two driven gears I are located on both sides of the driving gear and rotatably connected to the assembly plate 10 through the bearing at the center. The driving gear, the driven gear I, and the execution gear are sequentially meshed, that is, the driving gear is meshed and driven by the driven gear I and the corresponding execution gear, so as to drive the corresponding rotating shaft 21 to rotate in a specific direction.

[0040] On the second diameter, two groups of driven gears II are arranged, each group of driven gears II includes a driven gear II-I and a driven gear II-II rotatably connected to the assembly plate 10. The driving gear, the driven gear II-I, the driven gear II-II, and the execution gear are sequentially meshed, that is, the driving gear is meshed and driven by the driven gear II-I, the driven gear II-II, and the corresponding execution gear, so as to drive the corresponding rotating shaft 21 to rotate in a specific direction.

[0041] Through the odd number of meshing and even number of meshing of the above example, the adjacent two rotating shafts 21 rotate in opposite directions, that is, the rotating shafts 21 on the diagonal rotate in the same direction.

[0042] Through the design of the above two driving groups 30, the purpose of driving four material taking rods 22 to rotate at the same time can be achieved. When the material taking rod 22 rotates, a stack of easy-open covers located in the four material taking rods 22 can be clamped, and at the same time, the material supporting hook 23 slides into the bottom of the easy-open cover, which serves to support the easy-open cover, so as to ensure that the easy-open cover will not accidentally fall during the carrying process.

[0043] It should be noted that the clamping space formed by the four material taking rods 22 at the farthest point is maximized, and as the material taking rod 22 rotates, the near points of the material taking rod 22 approach each other and point to the center of the clamping space. At this time, the clamping space formed by the four material taking rods 22 is the smallest. The variability of the clamping space can adapt to clamping easy-open covers of different sizes, improving the usability of the product.

[0044] In the several piles of the transfer frame with the easy-to-open cover, the interval between the two adjacent piles of the easy-to-open cover is small, if the traditional straight pushing type cylinder clamping jaw mechanism is used, it is difficult to operate in the interval, but the four material taking rods 22 can be easily inserted into the small interval, and the rotating and clamping process of the material taking rod 22 requires less space than the existing straight pushing type clamping jaw mechanism, so it is more suitable for the clamping process of the easy-to-open cover.

[0045] The product drives the synchronous rotation of the four material taking rods 22 through eccentric design, and utilizes the eccentric motion trajectory characteristics to automatically form the avoidance phase and the grabbing phase of the material supporting hook 23 in the rotating process, so as to realize the interference-free space avoidance and accurate positioning of the material taking rod 22. The four-rod synchronous rotating mechanism simplifies the traditional multi-cylinder driving structure and reduces the equipment failure rate; the eccentric trajectory design of the material supporting hook 43 ensures the accurate cooperation of the grabbing position and the mold opening and closing action, and avoids the damage of the cover body; the overall transmission assembly adopts the modular design, which not only improves the assembly efficiency, but also can adapt to the production requirements of different specifications of the cover body by adjusting the eccentric distance, and comprehensively realizes the technical effects of high precision, high efficiency and high adaptability.

[0046] The technical range of the utility model is not limited to the content in the above description, and the person skilled in the art can make various deformations and modifications to the above embodiment without departing from the technical thought of the utility model, and these deformations and modifications should all belong to the protection range of the utility model.

Claims

1. An automatic easy-open lid loading and unloading device, characterized by, The utility model relates to a kind of mechanical arm, including: Assembly plate (10) is connected with the small arm of mechanical arm; Clamping group (20) includes rotating shaft (21), material taking rod (22) and material supporting hook (23), the center of rotating shaft (21) is rotationally connected with assembly plate (10), one end of material taking rod (22) is eccentrically fixed on the end face of rotating shaft (21), material supporting hook (23) is fixed on the other end of material taking rod (22), and several material taking rods (22) are enclosed to form clamping space; Driving group (30) is used to drive at least three rotating shafts (21) to rotate synchronously, so that several material taking rods (22) move to synchronously reduce or expand clamping space.

2. The automatic loading and unloading device for easy open cover according to claim 1, characterized in that, The driving group (30) includes cylinder (31), straight plate (32) and primary gear (33), the cylinder body of cylinder (31) is fixed with assembly plate (10), the cylinder body is slidably connected with movable rod, the end of movable rod is fixed with straight plate (32), and teeth are formed on the two side walls of straight plate (32), one primary gear (33) is fixed on each rotating shaft (21), and the primary gear (33) is engaged and driven between the corresponding side teeth.

3. The automatic loading and unloading device for easy open cover according to claim 2, characterized in that, A pair of primary gears (33) are arranged on the two sides of the cylinder (31), and the four primary gears (33) are engaged with the corresponding side teeth on the straight plate (32).

4. The automatic loading and unloading device for easy open cover according to claim 1, characterized in that, The driving group (30) includes driving gear, a plurality of driven gears and a plurality of execution gears, the driving gear is fixedly connected with the output shaft of the motor, the motor is installed on the mechanical arm, the driving gear rotates through a corresponding number of driven gears and execution gears, and the execution gear is fixed on the corresponding rotating shaft (21).

5. The automatic loading and unloading device for easy open cover according to claim 4, characterized in that, The number of rotating shafts (21) is four, and the execution gear is coaxially fixed on each rotating shaft (21), two pairs of execution gears are located on two diameters of the driving gear perpendicular to each other, the driving gear and one pair of execution gears are engaged and driven by odd times, and the driving gear and the other pair of execution gears are engaged and driven by even times, and the rotation directions of adjacent two execution gears are opposite.

6. The automatic loading and unloading device for easy open cover according to claim 1, characterized in that, The closest position of the material taking rod (22) to the clamping space is the near rest point, and the farthest position is the far rest point, and the near rest end and the far rest end are located at two ends of one diameter of the rotating shaft.

7. The automatic loading and unloading device for easy open cover according to claim 1, characterized in that, The material supporting hook (23) is in the shape of a straight bar.

8. The automatic loading and unloading device of easy open cover according to claim 1, characterized in that, The material supporting hook (23) is circular.

Images