A vertical stacking gripper for film rolls

Abstract

The application relates to the technical field of film roll packaging, and discloses a film roll vertical stacking gripper. The film roll vertical stacking gripper comprises a base, an outer sleeve arranged on the base, an inner sleeve penetrating through the outer sleeve, a grabbing sleeve fixedly connected with the bottom end of the inner sleeve, a guide plug connected with the bottom end of the grabbing sleeve, a cylinder support fixedly connected with the top of the inner sleeve, and a cylinder arranged on the cylinder support. The cylinder support is located above the outer sleeve, a tensioning push rod is inserted into the inner sleeve and extends into the grabbing sleeve, the end of the piston rod of the cylinder extends downward and is connected with the top end of the tensioning push rod through a joint, so that the cylinder and the tensioning push rod are coaxial. The film roll vertical stacking gripper is provided with the cylinder support above the outer sleeve, so that the piston rod of the cylinder can be coaxially arranged downward against the tensioning push rod, the power of the cylinder can be linearly and unobstructedly transmitted to the tensioning push rod, and the stacking gripper can still smoothly and unobstructedly grab and release the film roll in a long-term working process.

Description

Technical Field

[0001] The present invention relates to the technical field of film roll packaging, in particular to a vertical stacking gripper for film rolls. Background Art

[0002] After the film roll is packaged, it is usually erected and stacked for storage. In order to prevent grabbing marks from being left on the outer surface of the film roll, which would affect the quality of the film roll, existing stacking grippers all grab the film roll by tightening the film roll paper core.

[0003] The existing patent discloses a stacking clamp (publication number CN216803465U), which mainly drives the tensioning push rod up and down by a cylinder to drive the tensioning arm to open or close. However, the piston rod of the cylinder is not coaxially arranged with the tensioning push rod. The piston rod of the cylinder is arranged upward and needs to be transmitted to the tensioning push rod through a cross-connecting plate. The cross-connecting plate is fixed by clamping the end of the tensioning push rod. After working for a long time, this transmission method is prone to transmission jamming or even jamming due to loose connections, deformation and warping of the cross-connecting plate, and deviation of the direction of the force of the piston rod of the cylinder, thereby causing failure to open or close the tensioning arm of the stacking clamp.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a vertical stacking gripper for film rolls, aiming to solve the problem of obstruction and jamming of the cylinder driving the tensioning push rod.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The top end of the lifting plug is connected with the bottom end of the inner sleeve, and the lifting plug is connected with the bottom end of the inner sleeve washer, and the lifting plug is connected with the bottom end of the inner sleeve.

[0008] As a further improvement of the above technical solution, the cylinder bracket includes a horizontally arranged upper plate and lower plate, and a support connecting the upper plate and the lower plate, the cylinder is arranged on the top of the upper plate, and the joint is located between the upper plate and the lower plate.

[0009] As a further improvement of the above technical solution, a downward extending sliding rod is fixed to the bottom of the lower plate, and a guide sleeve for guiding the vertical movement of the sliding rod and a sensor for detecting the bottom end of the sliding rod are provided on the outside of the outer sleeve.

[0010] As a further improvement of the above technical solution, as a further improvement of the above technical solution, an upper clamping ring and a lower clamping ring for clamping the lower plate are sleeved on the inner sleeve, and a buffer pad is provided on the bottom surface of the lower clamping ring.

[0011] As a further improvement of the above technical solution, a linear bearing slidably connected to the tensioning push rod is provided on the lower plate.

[0012] As a further improvement of the above technical solution, a guide flange is provided at the lower portion of the tensioning push rod, and each of the tensioning clamping arms is slidably connected to the guide flange.

[0013] As a further improvement of the above technical solution, a limiting flange is provided at the lower part of the inner sleeve, and a first step for limiting the downward movement of the outer sleeve is formed inside the outer sleeve; a limiting screw is provided at the bottom end of the tightening push rod, and a second step for limiting the upward movement of the limiting screw is provided at the bottom of the clamping arm guide block.

[0014] As a further improvement of the above technical solution, the clamp arm guide block is provided with a guiding inclined surface facing the clamp arm hole, and the outer peripheral surface of the tensioning clamp arm is provided with friction lines.

[0015] As a further improvement of the above technical solution, a rotation drive assembly for driving the outer sleeve to rotate is further provided on the base.

[0016] As a further improvement of the above technical solution, the rotary drive assembly includes a motor bracket fixed on the base, a motor arranged on the motor bracket, a driving gear fixed on the output end of the motor, and a load-bearing gear rotatably connected to the base, the driving gear is meshed with the load-bearing gear through a transition gear, the load-bearing gear is coaxial with the outer sleeve and the outer sleeve is fixed above the load-bearing gear. Beneficial effects of the present invention: Compared with the prior art, the vertical stacking gripper of the film roll provided by the present invention is provided with a cylinder bracket above the outer sleeve, so that the piston rod of the cylinder can be coaxially arranged downwardly facing the tensioning push rod, ensuring that the power of the cylinder can be transmitted to the tensioning push rod in a straight line without obstruction, thereby solving the problem of the tensioning push rod being stuck or stuck, and ensuring that the stacking gripper can still grab and release the film roll smoothly and without obstruction during long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the film roll vertical stacking gripper provided by the present invention.

[0018] Figure 2 A cross-sectional view of the film roll vertical stacking gripper provided by the present invention.

[0019] Explanation of the main component symbols: 1-base, 21-outer sleeve, 210-first step, 22-inner sleeve, 220-limiting flange, 23-grabbing sleeve, 231-clamping arm hole, 24-guide plug, 31-cylinder bracket, 311-upper plate, 312-lower plate, 313-pillar, 32-cylinder, 33-joint, 34-upper clamping ring, 35-lower clamping ring, 36-linear bearing, 37-buffer pad, 4-clamping arm guide block, 41-second step, 42-guide ramp, 5-tensioning clamping arm, 61-slide rod, 62-guide sleeve, 63-sensor, 7-tensioning push rod, 71-guide flange, 72-limiting screw, 8-rotation drive assembly, 81-motor bracket, 82-motor, 83-driving gear, 84-bearing gear, 85-transition gear. DETAILED DESCRIPTION

[0020] The present invention provides a vertical film roll palletizing gripper. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0021] See also Figure 1 and Figure 2 The present invention provides a film roll vertical stacking gripper, comprising a base 1, an outer sleeve 21 arranged on the base 1, an inner sleeve 22 penetrating the outer sleeve 21, a grabbing sleeve 23 fixedly connected to the bottom end of the inner sleeve 22, a guide plug 24 connected to the bottom end of the grabbing sleeve 23, a cylinder bracket 31 fixedly connected to the top of the inner sleeve 22, and a cylinder 32 arranged on the cylinder bracket 31. The cylinder bracket 31 is located above the outer sleeve 21. A tensioning push rod 7 is inserted into the inner sleeve 22 and extends into the grabbing sleeve 23. The piston of the cylinder 32 The end of the rod extends downward and is connected to the top of the tensioning push rod 7 through the joint 33, so that the cylinder 32 and the tensioning push rod 7 are coaxial; the side wall of the grabbing sleeve 23 is provided with at least two clamping arm holes 231 arranged in a circular array, and the top of the guide plug 24 is fixed with a clamping arm guide block 4 located inside the grabbing sleeve 23, and each clamping arm hole 231 is provided with a tensioning clamping arm 5, each tensioning clamping arm 5 is driven and connected to the tensioning push rod 7 and each tensioning clamping arm 5 extends out of the clamping arm hole 231 or retracts into the grabbing sleeve 23 under the guidance of the clamping arm guide block 4.

[0022] Before stacking, the film roll has been converted from a horizontal placement state to a vertical placement state by a flipping machine. First, the grabbing sleeve 23 of the stacking gripper is aligned downward with the paper tube core of the film roll, and then the stacking gripper is lowered to allow the grabbing sleeve 23 to extend into the paper tube core of the film roll. Then the piston rod of the cylinder 32 is extended downward, and the thrust is linearly driven through the joint 33 to drive the tensioning push rod 7 to descend vertically. The tensioning push rod 7 drives all the tensioning clamping arms 5 to extend outward from the clamping arm hole 231 along the guide slope 42 of the clamping arm guide block 4, thereby clamping the film roll.

[0023] Compared with the prior art, the vertical film roll stacking gripper provided by the present invention sets a cylinder bracket 31 above the outer sleeve 21, so that the piston rod of the cylinder 32 can be coaxially arranged downwardly facing the tensioning push rod 7, ensuring that the power of the cylinder 32 can be transmitted to the tensioning push rod 7 in a straight line without obstruction, thereby solving the problem of the tensioning push rod 7 being stuck and stuck, and ensuring that the stacking gripper can still grab and release the film roll smoothly and unobstructed during long-term work.

[0024] In this embodiment, three clamping arm holes 231 are provided, and correspondingly, three tensioning clamping arms 5 are also provided.

[0025] Specifically, the cylinder support 31 includes a horizontally arranged upper plate 311 and lower plate 312, and a support column 313 connecting the upper plate 311 and the lower plate 312. The cylinder 32 is mounted on top of the upper plate 311, and the joint 33 is located between the upper plate 311 and the lower plate 312. This arrangement fully utilizes the space above the outer sleeve 21, allowing the cylinder 32 to be securely suspended and securely connected to the tensioning push rod 7. The output thrust of the cylinder 32 can be linearly transmitted to the tensioning push rod 7.

[0026] When the palletizing gripper picks up the film roll and moves above the pallet, the palletizing gripper is lowered to a set height under the action of the lifter, so that the palletizing gripper can place the film roll on the pallet stably, but in fact, the height of the pallet is inconsistent or the supporting surface of the pallet is inclined, so it is difficult to determine whether the film roll is placed on the pallet stably or is still in a suspended state, therefore, the gas cylinder support 31, the gas cylinder 32, the tensioning push rod 7, the inner sleeve 22, the grabbing sleeve 23 and the tensioning clamping arm 5 are formed into a floating whole, in addition, a slide rod 61 extending downward is fixed at the bottom of the lower plate 312, the outer sleeve 21 is provided with a guide sleeve 62 for guiding the vertical movement of the slide rod 61 and a sensor 63 for detecting the bottom end of the slide rod 61, under the natural state, the gas cylinder support 31 is pressed on the top of the outer sleeve 21 due to the gravity of the whole floating whole, so the bottom end of the slide rod 61 is always in the state of triggering the sensor 63. When the film roll is placed on the pallet stably, the lifter drives the palletizing gripper to continue to descend, at this time, the tensioning clamping arm 5 is in the state of tensioning the film roll, so the floating whole is stationary, then the base 1 and the outer sleeve 21 continue to descend relative to the floating whole, so that the gas cylinder support 31 and the outer sleeve 21 are separated, the sensor 63 on the outer sleeve 21 cannot detect the bottom end of the slide rod 61 due to the descent, and then feedback a signal to the control system, indicating that the film roll has been palletized in place, and the lifter can stop driving.

[0027] Preferably, the sliding cooperation of the slide rod 61 and the guide sleeve 62 also plays a role in limiting the rotation of the floating whole relative to the outer sleeve 21 and the base 1, not only positioning the floating whole in the circumferential direction to prevent the floating whole from rotating and affecting the facing of the film roll, but also preventing the bottom end of the slide rod 61 from being disconnected from the sensor 63 due to the rotation of the floating whole.

[0028] In order to fix the gas cylinder support 31 on the inner sleeve 22, the upper clamping ring 34 and the lower clamping ring 35 for clamping the lower plate 312 are arranged on the inner sleeve 22, the bottom surface of the lower clamping ring 35 is provided with a buffer pad 37, which can effectively buffer and reduce the impact force when the gas cylinder support 31 is pressed on the outer sleeve 21.

[0029] Preferably, the lower plate 312 is provided with a linear bearing 36 in sliding connection with the tensioning push rod 7, which can smoothly guide the sliding of the tensioning push rod 7 and improve the movement accuracy of the tensioning push rod 7.

[0030] Specifically, the lower part of the tensioning push rod 7 is provided with a guide flange 71, each of the tensioning clamping arms 5 is in sliding connection with the guide flange 71, and specifically, the top of each tensioning clamping arm 5 is provided with a C-shaped clamp which is clamped on the guide flange 71, which on one hand plays a role of keeping the tensioning clamping arm 5 in driving connection with the tensioning push rod 7, and on the other hand, the tensioning clamping arm 5 can slide outward in the circumferential direction under the action of the clamping arm guide block 4 while moving downward, so as to achieve the purpose of extending the tensioning clamping arm 5 out of the clamping arm hole 231.

[0031] In order to prevent the inner sleeve 22 from being separated from the outer sleeve 21 after assembly, the lower part of the inner sleeve 22 is provided with a limiting flange 220, and the inner sleeve 21 is formed with a first step 210 which limits the downward displacement of the outer sleeve 21, when the outer sleeve 21 moves downward relative to the inner sleeve 22, the first step 210 presses on the limiting flange 220 to limit the continuous downward movement of the outer sleeve 21. The tensioning push rod 7 penetrates through the clamping arm guide block 4, and the bottom end of the tensioning push rod 7 is provided with a limiting screw 72, and the bottom of the clamping arm guide block 4 is provided with a second step 41 which limits the upward displacement of the limiting screw 72, the second step 41 intercepts the limiting screw 72 to prevent the tensioning push rod 7 from moving upward excessively.

[0032] Preferably, the clamping arm guide block 4 is provided with a guide slope 42 which faces the clamping arm hole 231, and correspondingly, the end surface of the tensioning clamping arm 5 which faces the clamping arm guide block 4 is a sliding slope which cooperates with the guide slope 42, when the tensioning push rod 7 drives the tensioning clamping arm 5 to move downward, the tensioning clamping arm 5 will slide outward under the action of the guide slope 42 of the clamping arm guide block 4, so as to extend out of the clamping arm hole 231 to achieve grabbing. Preferably, the outer circumferential surface of the tensioning clamping arm 5 is provided with friction lines, when the tensioning clamping arm 5 grabs the film roll, the friction lines are clamped with the paper core cylinder of the film roll, which can improve the grabbing force and make the grabbing reliable.

[0033] In order to enable the palletizing gripper to drive the film roll to rotate in the state of clamping the film roll, so as to adjust the facing of the film roll and align the film roll to achieve neat palletizing, the base 1 is further provided with a rotary driving assembly 8 which is used to drive the outer sleeve 21 to rotate.

[0034] Specifically, the rotary drive assembly 8 includes a motor bracket 81 fixed to the base 1, a motor 82 disposed on the motor bracket 81, a driving gear 83 fixed to the output end of the motor 82, and a load-bearing gear 84 rotatably connected to the base 1. The driving gear 83 is meshed with the load-bearing gear 84 through a transition gear 85. The load-bearing gear 84 is coaxial with the outer sleeve 21, and the outer sleeve 21 is fixed above the load-bearing gear 84. When the tensioning clamp arm 5 of the stacking gripper is tightened to grasp the film roll, the cylinder bracket 31 is pressed down on the outer sleeve 21 due to its own gravity and the gravity of the film roll. When the motor 82 drives the driving gear 83 to rotate, the load-bearing gear 84 is driven by the transition gear 85 to rotate, thereby causing the outer sleeve 21, cylinder bracket 31, inner sleeve 22, grasping sleeve 23 and film roll to rotate synchronously as a whole, thereby achieving the effect of changing the orientation of the film roll.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the scope of protection of the present invention.

Claims

1. A vertical stacking gripper for film rolls, characterized in that: The invention comprises a base, an outer sleeve arranged on the base, an inner sleeve passing through the outer sleeve, a grabbing sleeve fixedly connected to the bottom end of the inner sleeve, a guide plug connected to the bottom end of the grabbing sleeve, a cylinder bracket fixedly connected to the top of the inner sleeve, and a cylinder arranged on the cylinder bracket, wherein the cylinder bracket is located above the outer sleeve, a tensioning push rod is inserted into the inner sleeve and extends into the grabbing sleeve, the piston rod end of the cylinder extends downward and is connected to the top end of the tensioning push rod through a joint, so that the cylinder and the tensioning push rod form a coaxial axis; the side wall of the grabbing sleeve is provided with at least two clamping arm holes arranged in a circumferential array, and the top of the guide plug is fixed with a clamping arm located at the grabbing sleeve. The clamping arm guide block inside the sleeve, each clamping arm hole is provided with a tensioning clamping arm, each tensioning clamping arm is connected to the tensioning push rod and each tensioning clamping arm extends out of the clamping arm hole or retracts into the grasping sleeve under the guidance of the clamping arm guide block; the cylinder bracket includes a horizontally arranged upper plate and a lower plate, and a pillar connecting the upper plate and the lower plate, the cylinder is arranged on the top of the upper plate, and the joint is located between the upper plate and the lower plate; a downward extending sliding rod is fixed to the bottom of the lower plate, and a guide sleeve for guiding the vertical movement of the sliding rod and a sensor for detecting the bottom end of the sliding rod are provided on the outside of the outer sleeve; a rotating drive assembly for driving the outer sleeve to rotate is also provided on the base.

2. The film roll vertical stacking gripper according to claim 1, characterized in that: An upper clamping ring and a lower clamping ring for clamping the lower plate are sleeved on the inner sleeve, and a buffer pad is provided on the bottom surface of the lower clamping ring.

3. The vertical stacking gripper for film rolls according to claim 1, characterized in that: The lower plate is provided with a linear bearing which is slidably connected with the tensioning push rod.

4. The film roll vertical stacking gripper according to claim 1, characterized in that: A guide flange is provided at the lower portion of the tensioning push rod, and each of the tensioning clamping arms is slidably connected to the guide flange.

5. The vertical stacking gripper for film rolls according to claim 1, characterized in that: A limiting flange is provided at the lower part of the inner sleeve, and a first step for limiting the downward movement of the outer sleeve is formed in the outer sleeve; a limiting screw is provided at the bottom end of the tightening push rod, and a second step for limiting the upward movement of the limiting screw is formed at the bottom of the clamping arm guide block.

6. The vertical stacking gripper for film rolls according to claim 1, characterized in that: The clamp arm guide block is provided with a guide inclined surface facing the clamp arm hole, and the outer peripheral surface of the tensioning clamp arm is provided with friction lines.

7. The vertical stacking gripper for film rolls according to claim 1, characterized in that: The rotary drive assembly includes a motor bracket fixed on the base, a motor arranged on the motor bracket, a driving gear fixed on the output end of the motor, and a load-bearing gear rotatably connected to the base. The driving gear is meshed with the load-bearing gear through a transition gear. The load-bearing gear is coaxial with the outer sleeve and the outer sleeve is fixed above the load-bearing gear.

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