CN111453495B - Quick-release clamping device and feeding equipment comprising same - Google Patents

Abstract

The invention discloses a quick-dismantling clamping device and feeding equipment comprising the same, wherein the quick-dismantling clamping device comprises a frame, a driving traction wheel connected to the frame, a friction wheel arranged corresponding to the driving traction wheel, and a friction wheel adjusting assembly, wherein the friction wheel adjusting assembly comprises a floating friction wheel shaft, an eccentric block, a sliding block and an elastic piece, the friction wheel is connected to the floating friction wheel shaft, the floating friction wheel shaft is eccentrically connected to the eccentric block, the sliding block is sleeved on the eccentric block, the elastic piece is upwards pressed against the sliding block, and the eccentric block can drive the friction wheel to be close to or far away from the driving traction wheel when eccentrically rotating. The invention provides a quick-dismantling clamping device and feeding equipment comprising the same, which adopt an eccentric sliding block mechanism, so that an operator can conveniently replace materials while stably conveying the materials such as films or thin plates.

Description

Quick-release clamping device and feeding equipment comprising same

Technical Field

The invention relates to feeding equipment, in particular to a quick-dismantling clamping device adopting an eccentric sliding block mechanism.

Background

In the existing feeding equipment for films or sheets, a traction mechanism mainly comprises a driving wheel and a friction wheel tightly attached to the driving wheel, the driving wheel receives rotary power from the outside, the friction wheel provides friction force for feeding action, and the driving wheel realizes conveying action of the films or sheets through rotary motion after being tightly attached to the friction wheel. In the prior art, the driving wheel and the friction wheel are tightly attached by adding a tension spring between the driving wheel shaft and the friction wheel shaft, but the following problems are easy to occur: ① The spring force of the tension spring is too large, so that the large spring force is needed to be overcome to separate the driving wheel and the friction wheel during material changing; ② The spring force of the tension spring is too small, so that the tension spring slips during feeding, and stable feeding cannot be ensured; ③ When the driving axle supporting the driving wheel is a cantilever (one end of the driving axle is a fixed end, and the other end is a cantilever end), and when the spring force provided for the friction wheel to keep the friction wheel closely attached to the driving shaft comes from the fixed end, the problem of feeding skew caused by the fact that the driving axle bears a large radial force can occur, and therefore the conveyed film or sheet is deviated.

Disclosure of Invention

In order to solve the problems, the invention provides the quick-release clamping device and the feeding equipment comprising the same, which are convenient for operators to replace materials while stably conveying the materials such as films or sheets.

In order to achieve the above purpose, the quick-release clamping device comprises a frame, a driving traction wheel connected to the frame, a friction wheel arranged corresponding to the driving traction wheel, and a friction wheel adjusting assembly, wherein the friction wheel adjusting assembly comprises a floating friction wheel shaft, an eccentric block, a sliding block and an elastic piece, the friction wheel is connected to the floating friction wheel shaft, the floating friction wheel shaft is eccentrically connected to the eccentric block, the sliding block is sleeved on the eccentric block, and the elastic piece is pressed against the sliding block upwards, wherein the eccentric block can drive the friction wheel to be close to or far away from the driving traction wheel when eccentrically rotating.

In an embodiment of the quick-dismantling clamping device, the eccentric block is provided with a round hole and an outer cylindrical surface, the center of the round hole is not collinear with the center of the eccentric block, the sliding block comprises a round hole, and the aperture of the round hole of the sliding block is approximately equal to the outer diameter of the outer cylindrical surface.

In an embodiment of the quick-release clamping device, the eccentric block includes a stop protrusion, and the slider includes a limit protrusion for limiting a movement range of the stop protrusion.

In an embodiment of the foregoing quick release clamping device, the sliding block further includes a side surface, the limiting protruding portion is disposed on the side surface, and the positioning protruding portion is disposed on the outer cylindrical surface.

In an embodiment of the quick release clamping device, the limiting protrusion includes a first limiting protrusion and a second limiting protrusion, and the stop protrusion is limited to move between the first limiting protrusion and the second limiting protrusion.

In an embodiment of the quick-dismantling clamping device, the eccentric blocks, the sliding blocks and the elastic pieces are respectively two corresponding to each other, and are also respectively arranged at two ends of the floating friction wheel shaft.

In an embodiment of the foregoing quick-release clamping device, the quick-release clamping device further includes an elastic adjustment mechanism, where the elastic adjustment mechanism includes a spring sealing plate and an adjusting screw set, and the elastic element is pressed between the slider and the spring sealing plate.

In an embodiment of the foregoing quick-release clamping device, the quick-release clamping device further includes an adjusting hand wheel, where the adjusting hand wheel is connected to an outer end of the eccentric block.

In an embodiment of the quick-release clamping device, two ends of the driving traction wheel are supported on the frame through bearing members.

The feeding equipment comprises the quick-release clamping device.

The quick-dismantling clamping device and the feeding equipment comprising the same have the beneficial effects that the eccentric sliding block mechanism is adopted, so that the attachment and separation of the driving traction wheel and the friction wheel can be easily realized under the condition of larger elastic force, and the material replacement of operators is facilitated. And the elastic force is kept adjustable in the invention.

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Drawings

FIG. 1 is a schematic perspective view of a quick release clamping device according to the present invention;

FIG. 2 is a schematic view of an exploded structure of the quick release clamping device of the present invention;

FIG. 3 is a working state diagram of the quick release clamping device in a released state;

FIG. 4 is a working state diagram of the quick release clamping device in a clamping state;

fig. 5 is a schematic perspective view of a frame of the quick release clamping device of the present invention.

Wherein reference numerals are used to refer to

10: Quick-dismantling clamping device

100: Rack

110: Sliding chute

111: Inner top surface

120: Supporting seat

200: Driving traction wheel

300: Friction wheel

400: Friction wheel adjusting assembly

410: Floating friction wheel axle

420: Eccentric block

421: Outer cylindrical surface

422: First stop protrusion

423: Second stop protrusion

430: Sliding block

430A: upper surface of

430B: lower surface of

430C: side surfaces

431: Round hole

432: First limit convex part

433: Second limit convex part

440: Elastic piece

450: Elastic force adjusting mechanism

451: Spring sealing plate

452: Adjusting screw group

460: Adjusting hand wheel

470: Linkage pin

500: Bearing component

600: Side sealing plate

Detailed Description

The following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, so as to further understand the purpose, the scheme and the effects of the present invention, but not to limit the scope of the appended claims.

References in the specification to "an embodiment," "another embodiment," "this embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Furthermore, such phrases are not intended to refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Certain terms are used throughout the description and following claims to refer to particular components or elements, and it will be appreciated by those of ordinary skill in the art that a technical user or manufacturer may refer to the same component or element by different terms or terminology. The present specification and the following claims do not take the form of an element or component with the difference in name, but rather take the form of an element or component with the difference in function as a criterion for distinguishing. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In addition, the term "coupled" as used herein includes any direct or indirect connection.

It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. For purposes of clarity, the ordinal terms "first," "second," "third," "fourth," etc., herein are used for distinguishing an element, region, section, and the like from another element, region, section, or the like, and are not intended to limit the particular element, region, section, or the like.

As shown in fig. 1 and 2, fig. 1 and 2 are respectively a schematic perspective view and a schematic exploded view of the quick release clamping device of the present invention. The quick-release clamping device 10 comprises a frame 100, an active traction wheel 200 and a friction wheel 300, wherein the active traction wheel 200 and the friction wheel 300 are respectively connected to the frame 100, the active traction wheel 200 and the friction wheel 300 are correspondingly arranged, and materials such as thin plates or films are conveyed between the active traction wheel 200 and the friction wheel 300 through the traction of the active traction wheel 200. The quick release clamping device 10 of the present invention further comprises a friction wheel adjustment assembly 400 connected to the frame 100, wherein the friction wheel adjustment assembly 400 is used for adjusting the position of the friction wheel 300 to change the tightness of the friction wheel 300 relative to the driving traction wheel 200. The friction wheel adjustment assembly 400 of the present invention employs an eccentric slider mechanism to achieve the attachment or detachment of the driving axle supporting the driving traction wheel 200 from the friction axle supporting the friction wheel 300.

Specifically, the friction wheel adjustment assembly 400 includes a floating friction wheel shaft 410, an eccentric block 420, a slider 430, and an elastic member 440. The friction wheel 300 is connected to the floating friction wheel shaft 410 to support the friction wheel 300, and the floating friction wheel shaft 410 is eccentrically connected to the eccentric block 420 to eccentrically rotate under the driving of the eccentric block 420, the sliding block 430 is sleeved on the eccentric block 420, and the elastic member 440 is pressed against the sliding block 430 on the frame 100. The elastic member 440 is used for providing a supporting force for supporting the floating friction wheel axle 410, so that the friction wheel 300 is attached to the driving traction wheel 200.

In the present invention, the eccentric block 420 eccentrically rotates to drive the friction wheel 300 to approach or separate from the driving traction wheel 200, specifically, the eccentric block 420 eccentrically rotates to drive the position of the friction wheel shaft 410 to change, so as to drive the position of the friction wheel 300 connected to the friction wheel shaft 410 to change, thereby changing the position of the friction wheel 300 relative to the driving traction wheel 200.

Referring to fig. 5, in the present invention, both ends of the driving traction wheel 200 are supported in the supporting seat 120 of the frame 100 through the bearing member 500. According to the invention, the supports are added at the two ends of the driving wheel shaft, so that the axial line of the driving wheel shaft can be always kept horizontal under the condition of larger elastic force. The eccentric block 420, the sliding block 430 and the elastic member 440 are respectively provided at two ends of the floating friction wheel shaft 410, that is, two ends of the floating friction wheel shaft 410 supporting the friction wheel 300 are supported by the eccentric block 420, the sliding block 430 and the elastic member 440, so that the structure is stable, and the supporting elastic force is stable. The supporting structure of the floating friction wheel shaft 410, which is composed of the eccentric blocks 420, the sliding blocks 430 and the elastic members 440, is symmetrical at both ends, and is blocked by the side sealing plates 600. One of the ends will be described below as an example.

The eccentric block 420 is an eccentric cylindrical member, and comprises a round hole and an outer cylindrical surface 421, wherein the central axis of the round hole is not collinear with the central axis of the eccentric block 420. The slider 430 includes a circular hole 431, and the aperture of the circular hole 431 corresponds to the outer diameter of the outer cylindrical surface 431 of the eccentric block 420, that is, the aperture of the circular hole 431 and the outer diameter of the outer cylindrical surface 431 of the eccentric block 420 tend to be equal, and the slider 430 is sleeved on the outer cylindrical surface 421 of the eccentric block 420 through the circular hole 431. The eccentric block 420 rotates in the circular hole 431 of the slider 430, that is, when the outer cylindrical surface 421 of the eccentric block 420 rotates relative to the circular hole 431 of the slider 430, the floating friction wheel shaft 410 is driven to eccentrically rotate.

The upper and lower ends of the slider 430 correspond to the frame 100 and the elastic member 440, respectively, and in detail, referring to fig. 1, 2 and 5, the frame 100 includes a chute 110, the slider 430 is disposed in the chute 110, the upper surface 430a of the slider 430 is disposed corresponding to the inner top surface 111 of the chute 110 of the frame 100, and the lower surface 430b of the slider 430 is disposed corresponding to the elastic member 440. The slider 430 receives the elastic force applied from the elastic member 440 and slides in the vertical direction in the chute 110.

The slider 430 further includes a side surface 430c, a limit protrusion is disposed on the side surface 430c, and a stop protrusion disposed corresponding to the limit protrusion is disposed on the outer cylindrical surface 421 of the eccentric block 420, for limiting a rotation angle of the eccentric block 420.

The two limiting protrusions of the slider 430 are used for limiting the eccentric block 420 to rotate between the two limiting protrusions. In this embodiment, the limiting protrusion of the slider 430 includes a first limiting protrusion 432 and a second limiting protrusion 433, and the positioning protrusion of the eccentric block 430 is disposed between the first limiting protrusion 432 and the second limiting protrusion 433 to limit the eccentric block 430 to rotate within a limited angle.

In some embodiments, the stop bosses of the eccentric mass 420 may also be provided in two. In detail, the stop protrusion of the eccentric block 420 includes a first stop protrusion 422 and a second stop protrusion 423, and when the first stop protrusion 422 moves from the first stop protrusion 432 to the second stop protrusion 433, the second stop protrusion 423 moves from the second stop protrusion 433 to the first stop protrusion 432.

The elastic member 440 of the present invention is, for example, an elastic compression spring. Further, the friction wheel adjustment assembly 400 further includes a spring force adjustment mechanism 450, and the spring force adjustment mechanism 450 is connected between the elastic member 440 and the frame 100.

In one embodiment, the spring force adjusting mechanism 450 includes a spring sealing plate 451 and an adjusting screw group 452, wherein one end of the elastic member 440 abuts against the lower surface 430b of the slider 430, and the other end abuts against the spring sealing plate 451, that is, the elastic member 440 is pressed between the slider 430 and the spring sealing plate 451, and the elastic member 440 is encapsulated by the spring sealing plate 451. The compression degree of the elastic member 440 can be changed by adjusting the adjusting screw of the screw group 452, thereby adjusting the retaining elastic force of the elastic member 440.

The friction wheel adjusting assembly 400 further comprises an adjusting hand wheel 460, wherein the adjusting hand wheel 460 is connected to the outer side end of the eccentric block 420 and is used for adjusting the rotation of the eccentric block 420, so as to manually clamp and release the driving traction wheel 200 and the friction wheel 300. In this embodiment, the adjusting hand wheel 460 is mounted on the eccentric block 420 at one end, and the eccentric block 420 at the other end is adjusted in a follow-up manner. In some embodiments, an adjustment hand wheel may be mounted on both eccentric blocks 420, and the invention is not limited. The rotation angle of the adjustment hand wheel 460 is limited by the interaction of the limit projection on the side surface 430c of the slider 430 with the stop projection on the outer cylindrical surface 421 of the eccentric mass 420.

In the present invention, the eccentric block 420 and the floating friction wheel shaft 410 may be connected by the linkage pin 470, so as to achieve the transmission of the torque between the eccentric block 420 and the floating friction wheel shaft 410.

As shown in fig. 3 and 4, fig. 3 shows a released state of the quick-release clamping device of the present invention, that is, a working state in which a gap exists between the driving wheel and the friction wheel, and fig. 4 shows a clamped state of the quick-release clamping device of the present invention, that is, a working state in which the driving wheel and the friction wheel are tightly attached.

The operation of the quick release clamping device of the present invention will be described with reference to fig. 1 to 5.

When the quick release clamping device 10 of the present invention is in the released state shown in fig. 2, under the action of the elastic member 440, the upper surfaces 430a of the sliding blocks 430 at both ends respectively engage with the inner top surfaces 111 of the sliding grooves 110 at both ends of the frame 100, and at this time, the elastic force of the elastic member 440 acts on the frame 100 through the sliding blocks 430. In the released state, the friction wheel 300 is separated from the active traction wheel 200, and the distance between the axis L1 of the active traction wheel 200 and the axis L2 of the outer cylindrical surface 421 of the eccentric block 420 is smaller than the distance between the axis L1 of the active traction wheel 200 and the axis L3 of the friction wheel 300 when the active traction wheel 200 is tangent to the friction wheel 300. At this time, the first stop protrusion 422 of the eccentric block 420 is located between the first stop protrusion 432 and the second stop protrusion 433 of the slider 430 and is relatively close to the first stop protrusion 432.

When the adjusting hand wheel 460 is rotated clockwise, that is, when the switching from the released state shown in fig. 3 to the clamped state shown in fig. 4 is achieved, the adjusting hand wheel 460 drives the eccentric block 420 to rotate clockwise, the eccentric block 420 causes the floating friction wheel shaft 410 to eccentrically rotate relative to the outer cylindrical surface 421 of the eccentric block 420, that is, the position of the axis L3 of the floating friction wheel shaft 410 gradually moves upwards, the distance between the axis L1 of the driving traction wheel 200 and the axis L3 of the floating friction wheel shaft 410 gradually decreases, and the friction wheel 300 gradually rises. When the friction wheel 300 is lifted up to be in contact with the active traction wheel 200, the friction wheel 300 is now subjected to resistance from the active traction wheel 200 in the vertical direction, and cannot be lifted up further in the vertical direction. In this process, the first stop protrusion 422 of the eccentric block 420 gradually rotates from a position near the first stop protrusion 432 on the slider 430 toward the second stop protrusion 433.

When the friction wheel 300 is lifted to be in contact with the driving traction wheel 200, the eccentric block 420 is still continuously rotated under the action of the rotating force from the adjusting hand wheel 460, and the friction wheel 300 cannot be continuously lifted due to the blocking force, so that the sliding blocks 430 move downwards in the vertical direction, the upper surfaces 430a of the sliding blocks 430 at two ends are separated from the inner surfaces 111 of the sliding grooves 110 of the frame 100, and the elastic force of the elastic piece 440 is transferred from acting on the frame 100 to between the driving traction wheel 200 and the friction wheel 300, so that the two are tightly adhered. In the clamped state, the friction wheel 300 and the driving traction wheel 200 are in a fitted state, and the distance between the axis L1 of the driving traction wheel 200 and the axis L2 of the outer cylindrical surface 421 of the eccentric block 420 is greater than the distance between the axis L1 of the driving traction wheel 200 and the axis L3 of the friction wheel 300 when the driving traction wheel 200 is tangential to the friction wheel 300.

When the adjusting hand wheel 460 rotates to the clamping state shown in fig. 4, the first stop protrusion 422 of the eccentric block 420 is limited by the second stop protrusion 433 on the slider 430, so that the eccentric block 420 cannot continue to rotate, at this time, a certain deviation angle α exists between any line parallel to the paper plane (only for fig. 4) where the axis L1 of the driving traction wheel 200 and the axis L3 of the friction wheel 300 intersect at two points and the vertical direction, and the reaction force of the driving traction wheel 200 to the friction wheel 300 makes the first stop protrusion 422 of the eccentric block 420 always contact with the second stop protrusion 433 on the slider 430, so as to achieve clamping maintenance and self-locking.

When the tightening force between the driving traction wheel 200 and the friction wheel 300 needs to be released, that is, the quick-release clamping device of the invention needs to be converted from the clamping state to the releasing state, the adjusting hand wheel 460 is only required to be rotated in the direction opposite to the clamping rotation direction (the anticlockwise direction shown in fig. 4), the eccentric block 420 is driven to rotate anticlockwise, the eccentric block 420 drives the floating friction wheel shaft 410 to eccentrically rotate, the distance between the axis L3 of the floating friction wheel shaft 410 and the axis L1 of the driving traction wheel 200 is gradually increased, and the friction wheel 300 is gradually lowered, so that the separation of the driving traction wheel 200 and the friction wheel 300 is realized, and the replacement of materials (films or sheets) is facilitated. At this time, the rotation angle of the eccentric block 420 is defined by the positions of the first stop protrusion 422 and the first limit protrusion 432 of the slider 430.

Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (7)

1. The utility model provides a quick detach clamping device, includes the frame, connects initiative traction wheel in the frame and with the friction wheel that initiative traction wheel corresponds the setting, its characterized in that still includes friction wheel adjustment subassembly, friction wheel adjustment subassembly includes:

the friction wheel is connected to the floating friction wheel shaft;

the floating friction wheel shaft is eccentrically connected to the eccentric block;

the sliding block is sleeved on the eccentric block; and

The elastic piece is pressed against the sliding block upwards;

the eccentric block can drive the friction wheel to be close to or far away from the driving traction wheel when eccentrically rotating;

the eccentric block is provided with a round hole and an outer cylindrical surface, and the round hole is not collinear with the center of the eccentric block; the sliding block comprises a round hole, the aperture of the round hole of the sliding block is approximately equal to the outer diameter of the outer cylindrical surface, the eccentric block comprises a stop protruding portion, the sliding block comprises a limit protruding portion used for limiting the movement range of the stop protruding portion, the limit protruding portion comprises a first limit protruding portion and a second limit protruding portion, and the stop protruding portion is limited to move between the first limit protruding portion and the second limit protruding portion.

2. The quick release clamping device of claim 1, wherein the slider further comprises a side surface, the limit protrusion is disposed on the side surface, and the stop protrusion is disposed on the outer cylindrical surface.

3. The quick release clamping device according to claim 1, wherein the eccentric block, the sliding block and the elastic piece are respectively two corresponding to each other, and are further respectively arranged at two ends of the floating friction wheel shaft.

4. The quick release clamping device of claim 1, further comprising a spring force adjustment mechanism including a spring seal plate and an adjustment screw set, the spring member being compressed between the slider and the spring seal plate.

5. The quick release clamping device of claim 1, further comprising an adjustment hand wheel coupled to an outboard end of the eccentric mass.

6. The quick release clamping device of claim 1, wherein the drive traction wheel is supported at both ends on the frame by bearing members.

7. A feeding apparatus comprising the quick release clamping device of any one of claims 1 to 6.