CN113978803A

CN113978803A - Clamping device

Info

Publication number: CN113978803A
Application number: CN202111254387.XA
Authority: CN
Inventors: 徐北
Original assignee: Suzhou First Pv Material Co ltd
Current assignee: Suzhou First Pv Material Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-01-28
Anticipated expiration: 2041-10-27
Also published as: CN113978803B

Abstract

The invention discloses a clamping device, which is used for clamping a packaging film roll and comprises a rack, at least one leftward rail mechanism and at least one rightward rail mechanism which are arranged at the bottom of the rack, a leftward sliding mechanism and a rightward sliding mechanism which can slide along the leftward rail mechanism and the rightward rail mechanism respectively, a leftward driving mechanism and a rightward driving mechanism which are used for driving the leftward sliding mechanism and the rightward sliding mechanism respectively, and a leftward clamping and grabbing plate and a rightward clamping and grabbing plate which are fixed on the leftward sliding mechanism and the rightward sliding mechanism respectively; the left-hand clamping and grabbing plate/the right-hand clamping and grabbing plate is of a flat structure which can be basically attached to a film roll; the left/right sliding mechanism slides along the left/right track mechanism to move the left/right clamping and grabbing plates along the circumferential direction of the film roll. The film roll clamping device has the beneficial effect that the film roll can be clamped in a narrow space.

Description

Clamping device

Technical Field

The invention relates to a clamping device, in particular to a clamping device.

Background

The film roll refers to a steel roller and a film material wound on the roller. In the traditional adhesive film roll-to-roll operation mode, two operators are required to lift the film roll into the packaging carton at the same time. The operation of film rolling and boxing is frequent, and the labor intensity of operators is increased. In this context, a jig is required to save labor.

For example, the patent application with publication number CN110356927A discloses a snatch mechanism suitable for cylinder yarn section of thick bamboo, including main mounting panel, motor, positioning disk, set up a plurality of curved spouts of circumference equipartition on the positioning disk, the spout increases gradually apart from the distance in positioning disk axle center, be equipped with the clamping jaw seat in the spout, install the clamping jaw on the clamping jaw seat, snatch the mechanism and still include clamping jaw dish pivoted radial guide relatively, set up radial guide slot on the radial guide, the clamping jaw seat is located in the radial guide slot. However, the space between the film roll and the packaging carton after the film roll is packaged in the packaging carton in fig. 1 is small, and the grabbing mechanism is limited to a narrow space and is difficult to operate.

Disclosure of Invention

The invention aims to provide a clamping device which can clamp and take a film roll in a narrow space.

The invention is realized by the following technical scheme.

A clamping device is used for clamping a packaging film roll and comprises a rack, at least one left track mechanism and at least one right track mechanism which are arranged at the bottom of the rack, a left sliding mechanism and a right sliding mechanism which can slide along the left track mechanism and the right track mechanism respectively, a left driving mechanism and a right driving mechanism which are used for driving the left sliding mechanism and the right sliding mechanism respectively, and a left clamping and grabbing plate and a right clamping and grabbing plate which are fixed on the left sliding mechanism and the right sliding mechanism respectively; the left-hand clamping and grabbing plate/the right-hand clamping and grabbing plate is of a flat structure which can be basically attached to a film roll; the left/right sliding mechanism slides along the left/right track mechanism to move the left/right clamping and grabbing plates along the circumferential direction of the film roll.

As a further improvement of the present invention, the left-hand rail mechanism/the right-hand rail mechanism each has an arc-shaped rail extending substantially in the circumferential direction of the film roll; the left sliding mechanism/the right sliding mechanism comprises a support fixedly connected with the left clamping and grabbing plate/the right clamping and grabbing plate and at least two sliding fit structures arranged on the support and in sliding fit with the arc-shaped rails.

As a further improvement of the present invention, the left/right track mechanism comprises two track plates fixed at the bottom of the frame and spaced from each other in front and back directions, and the arc-shaped tracks are respectively arranged on the facing side surfaces of the two track plates; the support is located between two track boards, and the two ends of the sliding fit structure are respectively in sliding fit with the corresponding arc-shaped tracks.

As a further improvement of the invention, the arc-shaped track is formed by inwards sinking the side surface of the track plate; the sliding fit structure comprises a supporting shaft extending along the front-back direction and crossing the bracket, and rolling pieces rotatably sleeved at two ends of the supporting shaft and arranged on corresponding arc-shaped rails.

As a further improvement of the invention, the track plate is provided with a plurality of through holes which are spaced apart from each other and are communicated with the arc-shaped track along the extension direction of the arc-shaped track, and the through holes are used for exposing the rolling members at the positions of the arc-shaped track.

As a further improvement of the invention, the left/right driving mechanism comprises a power unit arranged on the frame, a driving piece driven by the power unit and capable of moving in the left-right direction, and a sliding rod assembled on the driving piece and capable of lifting and sliding; the bottom end of the sliding rod is hinged with the left-direction sliding mechanism/the right-direction sliding mechanism.

As a further improvement of the invention, the power unit is provided with a rodless cylinder extending in the left-right direction, and the driving piece is provided with a rodless cylinder slide block assembled on the rodless cylinder.

As a further improvement of the invention, the side edges of the left-direction clamping and grabbing plate and the right-direction clamping and grabbing plate, which are close to each other, are provided with a notch or a plurality of notches which are spaced back and forth, and a tooth-shaped structure is formed between the adjacent notches; the left clamping and grabbing plate and the right clamping and grabbing plate are mutually matched with each other in a clamping manner by a tooth-shaped structure and a notch which are close to the side edge.

As a further improvement of the invention, the left/right sliding mechanisms are alternately arranged in the front-back direction and are fixedly connected to the tooth-shaped structures of the left/right gripping plates.

As a further improvement of the invention, at least one hollowed-out block is formed on each of the left-direction clamping and grabbing plate and the right-direction clamping and grabbing plate.

As a further improvement of the invention, the left-direction clamping and grabbing plate/the right-direction clamping and grabbing plate can be replaced and is used for film rolls with different specification diameters.

As a further improvement of the present invention, the left-hand rail mechanism/the right-hand rail mechanism may be adjustable in position in the left-right direction on the frame for adjusting the position of the left-hand gripping plate/the right-hand gripping plate.

As a further improvement of the invention, the front end and the rear end of the frame are provided with rolling structures for pressing down on the film roll.

The invention has the beneficial effects that:

the left-hand clamping and grabbing plate and the right-hand clamping and grabbing plate can slide along the circumferential direction of the film roll, clamp the lower part of the film roll in a narrow space, are particularly suitable for boxing the film roll, and have stable and reliable grabbing effect.

Drawings

The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a prior art clamping and boxing film roll;

FIG. 2 is a schematic view of the gripping device of the present invention;

FIG. 3 is a schematic view of the present invention gripping a roll of casing film;

FIG. 4 is a schematic structural view of the frame of the present invention;

FIG. 5 is an enlarged partial schematic view of FIG. 4;

FIG. 6 is a schematic structural diagram of the left-hand track mechanism and the right-hand track mechanism of the present invention;

FIG. 7 is a schematic structural view of the left sliding mechanism, the right sliding mechanism, the left gripping and grabbing plate and the right gripping and grabbing plate of the present invention;

FIG. 8 is a schematic structural diagram of the left and right driving mechanisms of the present invention;

fig. 9 is a schematic view of the gas path protection module of the present invention.

Detailed Description

The invention is explained in more detail below with reference to the drawings and exemplary embodiments.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

In the present application, the axial direction of the film roll to be gripped is defined as the front-rear direction, and both sides of the film roll are defined as the left-right direction. The utility model provides a press from both sides and get device installs on the device that can go up and down, and elevating gear can select the lift cylinder, will press from both sides the top of getting the device and the piston rod bottom fixed connection of lift cylinder, and the piston rod of lift cylinder disposes many as far as possible to it rocks about appearing to press from both sides the device to get. Through the descending movement of the lifting device, the clamping device is brought to the position above the film roll, which can be clamped, and after the clamping device clamps the film roll, the lifting device moves upwards to lift the film roll out of the box.

Referring to fig. 2 to 9, the gripping device of the present application includes a frame 1, at least one left track mechanism 21 and at least one right track mechanism 22 disposed at the bottom of the frame 1, a left slide mechanism 31 and a right slide mechanism 32 respectively slidable along the left track mechanism 21 and the right track mechanism 22, a left drive mechanism 41 and a right drive mechanism 42 respectively driving the left slide mechanism 31 and the right slide mechanism 32, and a left gripping plate 51 and a right gripping plate 52 respectively fixed to the left slide mechanism 31 and the right slide mechanism 32.

The four pairs of components, namely the left-direction track mechanism 21 and the right-direction track mechanism 22, the left-direction sliding mechanism 31 and the right-direction sliding mechanism 32, the left-direction driving mechanism 41 and the right-direction driving mechanism 42, and the left-direction clamping and grabbing plate 51 and the right-direction clamping and grabbing plate 52, are identical in structure and are opposite only in direction (setting direction and action direction). The left-hand clamping and grabbing plate 51 and the right-hand clamping and grabbing plate 52 are flat structures which can be basically attached to a film roll, the left-hand clamping and grabbing plate 51 and the right-hand clamping and grabbing plate 52 basically cover the upper half part of the film roll before the film roll is grabbed, under the driving of the left-hand driving mechanism 41 and the right-hand driving mechanism 42, the left-hand sliding mechanism 31 drives the left-hand clamping and grabbing plate 51 to move along the anticlockwise circumferential direction of the film roll, and the right-hand sliding mechanism 32 drives the right-hand clamping and grabbing plate 52 to move along the clockwise circumferential direction of the film roll, so that the film roll is grabbed by the left-hand clamping and grabbing plate 51 and the right-hand clamping and grabbing plate 52.

Frame 1 includes horizontally bottom plate 11, and two side fixedly connected with baffles 12 around the 11 top surfaces of bottom plate control two side fixedly connected with fencing boards 13, form a box-packed structure, and a back timber 14 that extends along the fore-and-aft direction is connected with to two baffles 12 fixedly, and baffle 12 need possess certain height to avoid back timber 14 and the mechanism collision that sets up in frame 1 to interfere. A fixed table 15 is fixed in the middle of the top beam 14 for fixedly connecting a lifting device, such as the bottom end of a piston rod of a lifting cylinder. The left track mechanism 21 and the right track mechanism 22 are both fixedly connected to the bottom surface of the horizontal bottom plate 11, and the left driving mechanism 41 and the right driving mechanism 42 are both arranged in the frame 1.

The left-direction clamping and grabbing plate 51 and the right-direction clamping and grabbing plate 52 need to be clamped at the middle section of the film roll and are matched with the gravity center position of the film roll; in addition, in order to avoid the film roll from shaking or tilting forward or backward when the film roll is lifted, the left-hand gripping and grabbing plate 51 and the right-hand gripping and grabbing plate 52 need to have a certain length which is not less than 40% of the length of the film roll, but the left-hand gripping and grabbing plate 51 and the right-hand gripping and grabbing plate 52 are not too long, and generally not more than 50% of the length of the film roll. The axial length of the film roll is about 900-. Correspondingly, the left-hand rail mechanism 21 and the right-hand rail mechanism 22 are also arranged.

The left track mechanism 21/the right track mechanism 22 are respectively provided with an arc-shaped track 2-1 which basically extends along the circumferential direction of the film roll, and the left sliding mechanism 31/the right sliding mechanism 32 comprise a bracket 3-1 fixedly connected with a left clamping and grabbing plate 51/a right clamping and grabbing plate 52 and at least two sliding fit structures 3-2 which are arranged on the bracket 3-1 and are in sliding fit with the arc-shaped tracks 2-1. The support 3-1 is a plate-shaped structure, the extending direction of the support is along the arc-shaped track 2-1, the arc-shaped bottom surface of the support enables the support to be attached and fixed on the surface of the left-direction clamping and grabbing plate 51/the right-direction clamping and grabbing plate 52, the sliding fit structures 3-2 are generally arranged at two ends of the support 3-1 respectively, and the stability of sliding of the left-direction sliding mechanism 31/the right-direction sliding mechanism 32 on the arc-shaped track 2-1 can be improved.

The complexity of the left/

right driving mechanisms

41 and 42 can be reduced by the sliding fit of the left/right

sliding mechanisms

31 and 32 and the left/

right rail mechanisms

21 and 22 via the arc-shaped rails 2-1. Correspondingly, the left driving mechanism 41/the right driving mechanism 42 comprises a power unit 4-1, a driving member 4-2 and a sliding rod 4-3, the power unit 4-1 is fixedly installed on the bottom plate 11 of the frame 1, the driving member 4-2 can move in the left and right directions by the power unit 4-1, the driving member 4-2 is provided with a lifting sliding seat 4-4, the upper part of the sliding rod 4-3 is slidably assembled in the lifting sliding seat 4-4, the bottom end of the sliding rod is provided with a pivot structure 4-5, and the pivot structure 4-5 is hinged to the middle part of the bracket 3-1. Under the driving action of the power unit 4-1, the driving member 4-2 moves along the left-right direction, during the movement, the sliding rod 4-3 synchronously moves up and down, the pivot structure 4-5 at the bottom end rotates around the bracket 3-1, and thereby the left-hand clamping and grabbing plate 51/the right-hand clamping and grabbing plate 52 are driven to move along the circumferential direction of the film roll.

More specifically, in the present embodiment, the power unit 4-1 is provided as a rodless cylinder extending in the left-right direction, and the driving member 4-2 is provided as a rodless cylinder slider slidably fitted on the rodless cylinder. Compared with other driving types, the rodless cylinder has the greatest advantages that the integral installation size is small, the axial space is saved by 40-45% compared with that of a standard cylinder, the installation space is saved, the rodless cylinder is very suitable for a narrow space in the rack 1, and in addition, the areas of pistons at two ends of the pushing force and the pulling force of the rodless cylinder are equal, so that the numerical values of the pushing force and the pulling force are equal, the middle positioning is easy to realize, and the surplus of movement is generated; in addition, the rodless cylinder has a relatively small load and is suitable for loading small components such as the sliding rod 4-3.

Further, the left/right track mechanism 21/22 includes two track plates 2-2 spaced apart from each other in a front-rear direction, and the track plates 2-2 are structurally formed in an arch bridge type, and the bottoms thereof are fixedly coupled to the bottom surface of the bottom plate 11 of the frame 1. Each left-direction track mechanism 21/right-direction track mechanism 22 is provided with two arc-shaped tracks 2-1, the arch bridge shape of the track plate 2-2 is matched with the arc-shaped tracks 2-1, and the side surfaces of the two track plates 2-2 which face each other are respectively the arc-shaped tracks 2-1. The support 3-1 is positioned between the two track plates 2-2, and two ends of the sliding fit structure 3-2 are respectively in sliding fit with the arc-shaped tracks 2-1 of the track plates 2-2. Still further, the arc-shaped track 2-1 is formed by inwards recessing the side surface of the track plate 2-2, and the sliding fit structure 3-2 comprises a supporting shaft 3-21 extending along the front-back direction and crossing the support 3-1, and rolling pieces 3-22 rotatably sleeved at the two ends of the supporting shaft 3-21 and arranged on the corresponding arc-shaped track 2-1. The rolling members 3-22 are disposed in the arc-shaped track 2-1 to support the support frame 3-1 well, so that the sliding of the left-hand gripper gripping plate 51/the right-hand gripper gripping plate 52 is very stable, and the rolling members 3-22 preferably use rolling bearings so that the sliding of the support frame 3-1 is smooth.

The track plate 2-2 is provided with a plurality of through holes 2-21 which are spaced apart from each other along the extending direction of the arc-shaped track 2-1 and are communicated with the arc-shaped track 2-1, and the through holes 2-21 are matched with the rolling members 3-22 in shape and size for exposing the rolling members 3-22 at the position of the arc-shaped track 2-1, so that the positions of the left-direction clamping and grabbing plate 51/the right-direction clamping and grabbing plate 52 can be well judged according to the positions of the rolling members 3-22.

The side edge of the left-direction clamping and grabbing plate 51, which is close to the right-direction clamping and grabbing plate 52, is provided with a gap 5-1 or a plurality of gaps 5-1 which are spaced back and forth, a tooth-shaped structure 5-2 is formed between the adjacent gaps 5-1, the left-direction sliding mechanism 31/the right-direction sliding mechanism 32 are alternately arranged along the front and back direction and are fixedly connected to the tooth-shaped structure 5-2 of the left-direction clamping and grabbing plate 51/the right-direction clamping and grabbing plate 52, the tooth-shaped structure 5-2 and the gap 5-1 of the left-direction clamping and grabbing plate 51 and the right-direction clamping and grabbing plate 52, which are close to the side edge, are mutually clamped and matched, the structures of the left-direction clamping and grabbing plate 51 and the right-direction clamping and grabbing plate 52 can increase the length of the left-direction clamping and grabbing plate 51 and the right-direction clamping and grabbing plate 52 along the circumferential direction of the film roll, the left-direction clamping and grabbing plate 51 and the right-direction clamping and grabbing plate 52 are mutually clamped and matched before the film roll is not grabbed, so that the left-direction clamping and grabbing plate 51 and the right-direction clamping and grabbing plate 52 are overlapped together, and grabbing plate are reduced in width of the left and right spread on the whole, so that it normally covers the upper half of the roll. When the left-hand gripping and grabbing plate 51 and the right-hand gripping and grabbing plate 52 move along the circumferential direction of the film roll, the left-hand gripping and grabbing plate 51 and the right-hand gripping and grabbing plate 52 are unfolded immediately, and the lower half part of the film roll can be covered by matching the lengths of the left-hand gripping and grabbing plate 51 and the right-hand gripping and grabbing plate 52, so that the gripping range of the film roll by the left-hand gripping and grabbing plate 51 and the right-hand gripping and grabbing plate 52 is expanded, and the film roll can be gripped more stably and reliably.

In addition, at least one hollowed-out block 5-3 is formed on each of the left-hand gripping plate 51 and the right-hand gripping plate 52, so that on one hand, the weight of the left-hand gripping plate 51 and the right-hand gripping plate 52 can be reduced, and the load weight can be reduced; on the other hand, when the left-hand gripping and grabbing plate 51 and the right-hand gripping and grabbing plate 52 are used for gripping the film roll, the film material is extruded out of the hollowed-out area 5-3, so that the film material can be prevented from being extruded out and wrinkles are prevented from being damaged, and the film material and the left-hand gripping and grabbing plate 51/the right-hand gripping and grabbing plate 52 are in full-area contact, so that the gripping effect is enhanced.

There are generally two cases of variation in the diameter of the roll, the first being a difference in the length of the wound web, where the roll diameter varies significantly, for example a web length of 150 meters and a roll diameter of 3-4cm for 200 meters; the second case is where the lengths of the film stock are different, but the different types of film stock have different thicknesses, in which case the roll diameter varies less, on the order of about 1 cm. When the diameter of the film roll is changed greatly, the left-hand clamping and grabbing plate 51/the right-hand clamping and grabbing plate 52 needs to be replaced, when the diameter of the film roll is changed slightly, the left-hand sliding mechanism 31/the right-hand sliding mechanism 32 needs to be slightly adjusted in left and right positions, a waist-shaped hole 11-1 extending in the left and right directions is formed in the bottom plate 11, the bottom plate 11 and the track plate 2-2 are fixedly connected through a fastener arranged in the waist-shaped hole 11-1, the positions of the left-hand sliding mechanism 31/the right-hand sliding mechanism 32 can be adjusted, and then the positions of the left-hand clamping and grabbing plate 51/the right-hand clamping and grabbing plate 52 are adjusted.

It is worth noting that the front end and the rear end of the frame 1 are both provided with the press-rolling structures 6, the press-rolling structures 6 are in plate-shaped structures and are used for pressing down on the film roll, and when the left-hand clamping and grabbing plate 51/the right-hand clamping and grabbing plate 52 move along the circumferential direction of the film roll, the film roll can be prevented from sliding along the left-hand direction due to the touch of the left-hand clamping and grabbing plate 51/the right-hand clamping and grabbing plate 52 and the film roll, so that the clamping is affected.

In addition, the clamping device is also provided with an air path protection module, and a control mode of combining a mechanical valve and a threaded air cylinder is adopted. In actual operation, two sets of manual valves are matched, the manual valve W1 controls the opening and closing of the left-hand gripping plate 51/the right-hand gripping plate 52, and the manual valve W2 controls the auxiliary lifting action. When the manual valve W2 is in the down range, the manual valve W1 can shift the range at will, and when the manual valve W2 is in the up range, the manual valve W1 is in the protection state, and the left-hand grip gripper plate 51/right-hand grip gripper plate 52 do not operate when the range is arbitrarily switched.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments can be modified, or some technical features can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The clamping device is characterized by being used for clamping a boxed film roll; the clamping device comprises a rack, at least one left track mechanism and at least one right track mechanism which are arranged at the bottom of the rack, a left sliding mechanism and a right sliding mechanism which can slide along the left track mechanism and the right track mechanism respectively, a left driving mechanism and a right driving mechanism which are used for driving the left sliding mechanism and the right sliding mechanism respectively, and a left clamping and grabbing plate and a right clamping and grabbing plate which are fixed on the left sliding mechanism and the right sliding mechanism respectively; the left-hand clamping and grabbing plate/the right-hand clamping and grabbing plate is of a flat structure which can be basically attached to a film roll; the left/right sliding mechanism slides along the left/right track mechanism to move the left/right clamping and grabbing plates along the circumferential direction of the film roll.

2. The grasper of claim 1 wherein the left/right track mechanisms each have an arcuate track extending substantially along the circumference of the roll of film; the left sliding mechanism/the right sliding mechanism comprises a support fixedly connected with the left clamping and grabbing plate/the right clamping and grabbing plate and at least two sliding fit structures arranged on the support and in sliding fit with the arc-shaped rails.

3. The gripping device of claim 2, wherein the left/right track mechanism comprises two spaced track plates fixed to the bottom of the frame, the two track plates having the arcuate tracks on opposite sides thereof; the support is located between two track boards, and the two ends of the sliding fit structure are respectively in sliding fit with the corresponding arc-shaped tracks.

4. The gripping device of claim 3, wherein the arcuate track is formed by inward recessing of the sides of the track plate; the sliding fit structure comprises a supporting shaft extending along the front-back direction and crossing the bracket, and rolling pieces rotatably sleeved at two ends of the supporting shaft and arranged on corresponding arc-shaped rails.

5. The gripping device as claimed in claim 4, wherein the track plate is provided with a plurality of through holes spaced apart from each other along the extension direction of the arcuate track and communicating with the arcuate track for exposing the rolling members at the position of the arcuate track.

6. The gripping device of claim 2, wherein the left/right driving mechanism comprises a power unit disposed on the frame, a driving member driven by the power unit to move in the left/right direction, and a slide rod mounted on the driving member and capable of sliding up and down; the bottom end of the sliding rod is hinged with the left-direction sliding mechanism/the right-direction sliding mechanism.

7. The gripping apparatus according to claim 6, wherein the power unit is provided as a rodless cylinder extending in the left-right direction, and the driving member is provided as a rodless cylinder slider fitted on the rodless cylinder.

8. The grasping device according to claim 1, wherein the side of the left and right grasping plates adjacent to each other has one notch or a plurality of notches spaced back and forth, and a tooth-shaped structure is formed between adjacent notches; the left clamping and grabbing plate and the right clamping and grabbing plate are mutually matched with each other in a clamping manner by a tooth-shaped structure and a notch which are close to the side edge.

9. The grasping apparatus according to claim 8, wherein the left/right slide mechanisms are alternately arranged in the front-rear direction and fixedly attached to the tooth structure of the left/right grasping plate.

10. The grasping apparatus according to claim 1, wherein the left/right grasping boards each have at least one cutout formed therein.

11. The gripper apparatus of claim 1, wherein the left/right gripper plates are interchangeable for different gauge diameters of film rolls.

12. The gripping apparatus according to claim 1 or 11, wherein the left/right rail mechanism is adjustable in position in the left/right direction on the frame for adjusting the position of the left/right gripping board.

13. The gripper apparatus of claim 12, wherein the frame is provided at both the front and rear ends with a roll pressing structure for pressing down on a film roll.