Cam mechanism and cam-driven conveying device

Abstract

The utility model belongs to the technical field of cam driving, and particularly relates to a cam mechanism and a cam-driven conveying device, which comprise a driving shaft, a first cam and a second cam are fixedly arranged on the driving shaft; the swing frame comprises a rotating end, and a first swing rod and a second swing rod which are arranged at the rotating end; the first swing rod and the second swing rod are provided with a first rolling piece and a second rolling piece respectively, and the first rolling piece and the second rolling piece are tightly attached to the peripheries of the first cam and the second cam respectively. The driving shaft is used for driving the first cam and the second cam to synchronously rotate so as to drive the swing frame to reciprocate around the axis of the rotating end; the first rolling piece is pushed by the first cam to swing in the forward direction, the second rolling piece is pushed by the second cam to swing in the back-and-forth direction, elastic pushing of a spring is replaced by mechanical pushing of the cams, the stroke track is accurate, the movement precision is high, pressure of a reset spring acting on the cams is removed, abrasion of the cams is relieved, and the service life of the cams is prolonged. And the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cam driving, and in particular relates to a cam mechanism and a cam driven feeding device. Background Art

[0002] Cam refers to the rotating or sliding part of a machine, which is a component commonly used in machinery to convert rotary motion into reciprocating motion. The cam transmits the rotary motion to the roller moving close to its periphery, lifts up the reciprocating mechanism through the roller, and then presses or pulls the reciprocating mechanism back with a spring. When the cam lifts up the reciprocating mechanism to move forward, the cam must not only overcome the movement resistance of the reciprocating mechanism, but also overcome the reset elastic force of the spring to move; when the reciprocating mechanism moves backward, the reset elastic force of the spring must overcome the movement resistance of the reciprocating mechanism to drive the reciprocating mechanism to move backward (reset), so the elastic force of the spring cannot be too small, resulting in the cam always bearing a large pressure, causing the periphery of the cam to wear faster. In addition, the spring needs to repeatedly perform telescopic movements, which makes the spring prone to mechanical fatigue, resulting in insufficient elasticity and untimely reset. It is not only easy to shake and move unsteadily, but also increases the probability of failure during the movement of the mechanism. Utility Model Content

[0003] The utility model aims to provide a cam mechanism and a cam driven feeding device, aiming to solve one of the technical problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides a cam mechanism, comprising:

[0005] a driving shaft on which a first cam and a second cam are fixedly disposed; and

[0006] A swing frame, comprising a rotating end, and a first swing rod and a second swing rod provided at the rotating end; the first swing rod and the second swing rod are respectively provided with a first rolling member and a second rolling member, and the first rolling member and the second rolling member are respectively closely attached to the periphery of the first cam and the second cam;

[0007] The driving shaft is used to drive the first cam and the second cam to rotate synchronously, thereby driving the swing frame to swing back and forth around the axis of the rotating end.

[0008] Optionally, when the first cam and the second cam rotate synchronously, the first rolling element and the second rolling element always cling to and move along the peripheral wall contours of the first cam and the second cam respectively.

[0009] Optionally, centers of the first rolling element and the second rolling element are rotatably connected to the first swing rod and the second swing rod respectively through a first connecting shaft.

[0010] Optionally, a rotating shaft is provided through the rotating end so that the swing frame can swing back and forth around the rotating shaft.

[0011] Optionally, the first rolling element and the second rolling element are any one of rollers, bearings or balls.

[0012] Optionally, the first cam and the second cam have different peripheral profile shapes.

[0013] Optionally, one end of the driving shaft is connected to a first driving unit, and the first driving unit is used to drive the driving shaft to rotate.

[0014] Optionally, one end of the second swing rod away from the rotating end is bent and extended to form an arc-shaped connecting portion, and the second rolling element is arranged in the middle of the second swing rod.

[0015] Optionally, the angle between the line a connecting the contact point between the first rolling element and the first cam and the axis of the drive shaft, and the line b connecting the contact point between the second rolling element and the second cam and the axis of the drive shaft is ≥60°.

[0016] An embodiment of the utility model also provides a cam-driven feeding device, comprising a frame, a feeding mechanism and the above-mentioned cam mechanism; the first swing rod is connected to the feeding mechanism at one end away from the rotating end; the swing frame is used to drive the feeding mechanism to reciprocate when it swings back and forth, so as to transport products.

[0017] Compared with the prior art, the above one or more technical solutions in the cam mechanism provided by the embodiment of the utility model have at least one of the following technical effects:

[0018] The first cam and the second cam are used to push the swing frame to swing back and forth around the rotating shaft. For example, the first cam pushes the first rolling element to swing in the direction of the forward movement, and the second rolling element and the peripheral wall of the second cam are in close contact to play a positioning role; the second cam pushes the second rolling element to swing in the direction of the return movement, and the first rolling element and the peripheral wall of the first cam are in close contact to play a positioning role; the mechanical push of the cam replaces the push of the spring force, and the travel trajectory is accurate and the movement accuracy is high. In addition, there is no need to use a reset spring, and the pressure of the reset spring on the cam is removed, which reduces the wear of the cam and increases the service life.

[0019] Compared with the prior art, the above one or more technical solutions in the cam-driven feeding device provided in the embodiment of the utility model have at least one of the following technical effects:

[0020] The driving shaft rotates to drive the first cam and the second cam to rotate synchronously. The first cam and the second cam drive the swing frame to swing back and forth around the rotating shaft through the first rolling member and the second rolling member respectively, thereby driving the feeding mechanism to reciprocate. The feeding mechanism conveys products (for example, books or multiple stacked books) during the reciprocating motion, that is, the books or multiple stacked books are conveyed to the cutting mechanism through the feeding mechanism, and the books are cut according to the specified size of the book opening through the cutting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of the cam mechanism of the present invention.

[0023] Figure 2 It is a front view of the cam mechanism of the present invention.

[0024] Figure 3 It is a schematic structural diagram of the cam driven feeding device of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the feeding mechanism of the present invention.

[0026] Figure 5 Another viewing angle of the feeding mechanism of the present invention.

[0027] Among them, the reference numerals in the figure are:

[0028] 100, rack; 110, slide bar;

[0029] 200, cam mechanism; 210, drive shaft; 211, first cam; 212, second cam; 213, mounting hole; 220, swing frame; 220a, rotating end; 221, first swing rod; 222, first rolling element; 223, second swing rod; 224, second rolling element; 225, first connecting shaft; 226, arc-shaped connecting portion; 230, rotating shaft;

[0030] 300, feeding mechanism; 310, feeding assembly; 311, sliding seat; 312, sliding block; 313, first sliding seat; 314, second sliding seat; 315, upper clamping block; 316, lower clamping block; 317, second driving unit; 321, positioning seat; 322, accommodating groove; 323, positioning plate; 331, connecting seat; 332, sliding groove; 341, screw rod; 342, nut seat; 343, third driving unit; 350, connecting rod assembly; 351, first connecting rod; 352, second connecting shaft; 353, second connecting rod; 354, third connecting shaft; 355, third rolling element. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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 cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0035] In one embodiment of the present invention, referring to Figure 1-Figure 5 , a cam mechanism 200 is provided, including a driving shaft 210 and a swing frame 220.

[0036] Among them, refer to Figure 1 and Figure 2 A first cam 211 and a second cam 212 are fixedly disposed on the driving shaft 210 .

[0037] Among them, refer to Figure 1 and Figure 2 The swing frame 220 includes a rotating end 220a, and a first swing rod 221 and a second swing rod 223 disposed at the rotating end 220a. The first swing rod 221 and the second swing rod 223 are respectively provided with a first rolling member 222 and a second rolling member 224, and the first rolling member 222 and the second rolling member 224 are respectively closely attached to the periphery of the first cam 211 and the second cam 212.

[0038] Among them, refer to Figure 1 and Figure 2 The driving shaft 210 is used to drive the first cam 211 and the second cam 212 to rotate synchronously, thereby driving the swing frame 220 to swing back and forth around the axis of the rotating end 220a.

[0039] Compared with the prior art, the above one or more technical solutions in the cam mechanism provided by the embodiment of the utility model have at least one of the following technical effects:

[0040] Reference Figure 1 and Figure 2 , the first cam 211 and the second cam 212 respectively push the swing frame 220 to swing back and forth around the axis of the rotating end 220a, for example: the first cam 211 pushes the first rolling element 222 to swing in the direction of the yearning, at which time the second rolling element 224 and the peripheral wall of the second cam 212 are in close contact to play a positioning role; the second cam 212 pushes the second rolling element 224 to swing in the direction of the return (return), at which time the first rolling element 222 and the peripheral wall of the first cam 211 are in close contact to play a positioning role; the mechanical push of the cam replaces the push of the elastic force of the spring, and the travel trajectory is accurate and the movement accuracy is high. In addition, there is no need to use a reset spring, and the pressure of the reset spring on the cam is removed, which reduces the wear of the cam and increases the service life.

[0041] Among them, refer to Figure 1 and Figure 2 The first cam 211 and the second cam 212 can be an integrally formed structure, a split combined structure, or two independent parts, which is not limited here.

[0042] Among them, refer to Figure 1 and Figure 2The first cam 211 and the second cam 212 are provided with mounting holes 213, and the first cam 211 and the second cam 212 are fixedly sleeved on the driving shaft 210 through the mounting holes 213. The first cam 211 and the second cam 212 can be fixedly connected to the driving shaft 210 by means of clamping, bonding, or welding. When the driving shaft 210 rotates, the first cam 211 and the second cam 212 can be driven to rotate synchronously.

[0043] Further, refer to Figure 1 and Figure 2 When the first cam 211 and the second cam 212 rotate synchronously 360°, the first rolling element 222 and the second rolling element 224 always cling to and move along the peripheral wall contours of the first cam 211 and the second cam 212, respectively, with precise travel trajectories and high motion accuracy. In a specific embodiment, when the first cam 211 and the second cam 212 rotate synchronously 360°, the first cam 211 pushes the first swing rod 221 to swing upward through the first rolling element 222, thereby driving the swing frame 220 to swing upward around the rotating shaft 230. The second cam 212 pushes the second swing rod 223 to swing downward through the second rolling element 224, thereby driving the swing frame 220 to swing downward around the rotating shaft 230, realizing the reciprocating swing of the swing frame 220 around the rotating shaft 230, thereby driving the feeding mechanism 300 to reciprocate.

[0044] Further, refer to Figure 1 and Figure 2 The centers of the first rolling member 222 and the second rolling member 224 are rotatably connected to the first swing rod 221 and the second swing rod 223 respectively through the first connecting shaft 225, so as to facilitate the installation of the first rolling member 222 and the second rolling member 224.

[0045] Further, refer to Figure 1 and Figure 2 The axis of the rotating end 220a is penetrated by a rotating shaft 230, so that the swing frame 220 can swing back and forth around the rotating shaft 230. Specifically, the axis of the rotating end 220a is penetrated by a connecting hole, and the connecting hole is rotatably connected to the rotating shaft 230 through a first bearing. The rotating shaft 230 is used to be fixedly connected to a frame 100, so that the swing frame 220 can swing back and forth around the rotating shaft 230.

[0046] Further, refer to Figure 1 and Figure 2 The first rolling member 222 and the second rolling member 224 are any one of rollers, bearings or balls, which reduce the friction between the peripheral wall of the first rolling member 222 and the peripheral wall of the first cam 211, and reduce the friction between the peripheral wall of the second rolling member 224 and the peripheral wall of the second cam 212, so that the movement is smooth and not easy to wear.

[0047] Further, refer to Figure 1 and Figure 2 The peripheral contour shapes of the first cam 211 and the second cam 212 are different. Therefore, the first cam 211 pushes the first rolling element 222 to swing in the desired direction, and the second cam 212 pushes the second rolling element 224 to swing in the return direction; or, the second cam 212 pushes the second rolling element 224 to swing in the desired direction, and the first cam 211 pushes the first rolling element 222 to swing in the return direction.

[0048] Among them, refer to Figure 1 and Figure 2 The peripheral contour of the first cam 211 and the second cam 212 can be any other shape. When the first cam 211 and the second cam 212 rotate 360° synchronously, the first rolling element 222 and the second rolling element 224 can always be tightly attached to and move along the peripheral wall contour of the first cam 211 and the second cam 212 respectively, and no limitation is made here.

[0049] Further, refer to Figure 1 and Figure 2 One end of the drive shaft 210 is connected to a first drive unit (not shown), and the first drive unit is used to drive the drive shaft 210 to rotate. The first drive unit is a motor, and the output shaft of the motor is connected to one end of the drive shaft 210 or the output shaft of the motor is connected to one end of the drive shaft 210 through a transmission mechanism, and the drive shaft 210 is driven to rotate by the motor. The transmission mechanism can be a gear box, a synchronous wheel and a synchronous belt transmission structure, a sprocket and a chain transmission structure, etc., which are not limited here.

[0050] Among them, refer to Figure 1 and Figure 2 The motor is used to be fixedly mounted on a frame 100 , and both ends of the driving shaft 210 are rotatably connected to the bearing seat, and the bearing seat is used to be fixedly mounted on a frame 100 .

[0051] Further, refer to Figure 1 and Figure 2 The second swing rod 223 has one end away from the rotating end 220a bent and extended to form an arc-shaped connecting portion 226, and the second rolling element 224 is disposed in the middle of the second swing rod 223. The arc-shaped connecting portion 226 is used to connect with other mechanisms (for example, the feeding mechanism 300), so that the reciprocating swing of the swing frame 220 drives the reciprocating motion of other mechanisms.

[0052] Further, refer to Figure 1 and Figure 2 The line a between the contact point between the first rolling element 222 and the first cam 211 and the axis of the driving shaft 210, the line b between the contact point between the second rolling element 224 and the second cam 212 and the axis of the driving shaft 210, and the angle c between the line a and the line b is ≥ 60°.

[0053] In another embodiment of the present invention, referring to Figure 1 and Figure 3 , a cam-driven feeding device is also provided, comprising a frame 100, a feeding mechanism 300 and the above-mentioned cam mechanism 200. The end of the first swing rod 221 away from the rotating end (arc-shaped connecting portion 226) is connected to the feeding mechanism 300; the swing frame 220 is used to drive the feeding mechanism 300 to reciprocate when it swings back and forth, and is used to convey products. Specifically, the driving shaft 210 rotates to drive the first cam 211 and the second cam 212 to rotate synchronously, and the first cam 211 and the second cam 212 drive the swing frame 220 to swing back and forth around the rotating shaft 230 through the first rolling member 222 and the second rolling member 224, respectively, thereby driving the feeding mechanism 300 to reciprocate, and the feeding mechanism 300 conveys products (for example: books or multiple stacked books) during the reciprocating motion, that is, the books or multiple stacked books are conveyed to the cutting mechanism through the feeding mechanism 300, and the books are cut according to the specified size of the book opening through the cutting mechanism.

[0054] Reference Figure 3-Figure 5The feeding mechanism 300 includes a feeding assembly 310 and a connecting rod assembly 350. The feeding assembly 310 includes a sliding seat 311, an upper clamping block 315, a lower clamping block 316 and a second driving unit 317. The feeding assembly 310 includes a sliding seat 311, a lower clamping block 316, an upper clamping block 315 and a second driving unit 317; the frame 100 is provided with at least one sliding rod 110, and the sliding seat 311 is slidably connected to the sliding rod 110 through at least one sliding block 312; the upper clamping block 315 and the lower clamping block 316 are arranged opposite to each other up and down, and a clamping position is formed between the upper clamping block 315 and the lower clamping block 316. The second driving unit 317 is arranged on the sliding seat 311 and is used to drive the upper clamping block 315 and the lower clamping block 316 to move closer to or away from each other, thereby clamping or releasing the product; the connecting rod assembly 350 is connected to the end of the first swing rod 221 away from the rotating shaft 230 and the sliding seat 311. When the swing frame 220 swings back and forth, the sliding seat 311 is driven to reciprocate through the connecting rod assembly 350, so that the upper clamping block 315 and the lower clamping block 316 reciprocate for conveying the product. Specifically, the product (for example, a book or a plurality of stacked books) is placed at the clamping position between the upper clamping block 315 and the lower clamping block 316, and the second driving unit 317 drives the upper clamping block 315 and the lower clamping block 316 to approach each other, thereby clamping the product. The first driving unit drives the first cam 211 and the second cam 212 to rotate synchronously through the driving shaft 210, first driving the swing frame 220 to swing upward, and the swing frame 220 drives the sliding seat 311 to move forward through the connecting rod assembly 350 to transport the product to Processing position, for example: the processing position can be the cutting position of the book cutting mechanism, the product can be a book or multiple stacked books, that is, the book is transported to the cutting position, and the cutting mechanism cuts the book according to the specified size of the book, and after cutting, the swing frame 220 is driven to swing downward, and the swing frame 220 drives the sliding seat 311 to move backward through the connecting rod assembly 350, so that the sliding seat 311 makes a linear reciprocating motion, and the upper clamping block 315 and the lower clamping block 316 make a linear reciprocating motion for feeding. Among them, the book cutting mechanism belongs to the prior art and is very common in the market, so it is not repeated here.

[0055] Among them, refer to Figure 4 and Figure 5 The second driving unit 317 can be a finger cylinder, the upper clamping block 315 and the lower clamping block 316 are respectively fixed to the two fingers of the finger cylinder, and the finger cylinder drives the upper clamping block 315 and the lower clamping block 316 to move closer to or away from each other. The second driving unit 317 can also be two telescopic cylinders, the upper clamping block 315 and the lower clamping block 316 are respectively fixed to the telescopic ends of the two telescopic cylinders, and the two telescopic cylinders drive the upper clamping block 315 and the lower clamping block 316 to move closer to or away from each other.

[0056] Further, refer to Figure 4 and Figure 5The top of the sliding seat 311 is provided with a positioning seat 321, and a receiving groove 322 is provided on one side of the positioning seat 321, and the receiving groove 322 runs through the upper and lower end surfaces of the positioning seat 321. The positioning seat 321 is provided with a positioning plate 323 on both opposite sides of the receiving groove 322, and the upper clamping block 315 is located in the receiving groove 322. Specifically, the product (for example, a book or a plurality of stacked books) is placed in the clamping position between the upper clamping block 315 and the lower clamping block 316, and the two positioning plates 323 are used to position the opposite sides of the book, that is, the distance between the two positioning plates 323 is equal to the width of the book, which plays a role in positioning the product.

[0057] Further, refer to Figure 1 and Figure 3 The connecting rod assembly 350 includes a first connecting rod 351 and a second connecting rod 353. One end of the first connecting rod 351 is hinged to one end of the first swing rod 221 away from the rotating shaft 230 through a second connecting shaft 352, and the other end of the first connecting rod 351 is hinged to the middle part of the second connecting rod 353 through another second connecting shaft 352. One end of the second connecting rod 353 is hinged to the frame 100 through a third connecting shaft 354, and the other end of the second connecting rod 353 is connected to the feeding assembly 310. The first cam 211 and the second cam 212 rotate synchronously to drive the swing frame 220 to swing back and forth, thereby driving the first connecting rod 351 to swing back and forth, and then driving the second connecting rod 353 to swing back and forth, and the reciprocating swing of the second connecting rod 353 drives the sliding seat 311 to perform linear reciprocating motion.

[0058] Further, refer to Figure 3 and Figure 4 The sliding seat 311 is provided with a connecting seat 331, and the connecting seat 331 is provided with a slide groove 332. The slide groove 332 is not parallel to the slide bar 110. Preferably, the slide groove 332 is perpendicular to the slide bar 110. The other end of the second connecting rod 353 is provided with a third rolling member 355, and the third rolling member 355 is connected in a rolling manner in the slide groove 332; when the third rolling member 355 reciprocates along the slide groove 332, it is used to drive the sliding seat 311 to reciprocate. Specifically, the swing frame 220 swings to drive the first connecting rod 351 to swing, thereby driving the second connecting rod 353 to swing, and then driving the third rolling member 355 to slide in the slide groove 332. Under the limiting effect of the slide groove 332, the third rolling member 355 rolls up and down in the slide groove 332, which pushes the sliding seat 311 to move along the slide bar 110 in the front-rear direction, so that the sliding seat 311 performs a linear reciprocating motion, driving the upper clamping block 315 and the lower clamping block 316 to reciprocate linearly for feeding. The third rolling element 355 is any one of a roller, a bearing or a ball.

[0059] In another embodiment of the present invention, referring to Figure 4 and Figure 5The sliding seat 311 includes a first sliding seat 313 and a second sliding seat 314, both of which are slidably connected to the sliding rod 110 through at least one sliding block 312. The connecting seat 331 is arranged on the first sliding seat 313, and the positioning seat 321 and the second driving unit 317 are both arranged on the second sliding seat 314. The first sliding seat 313 is rotatably provided with a screw rod 341, one end of which is rotatably connected to the first sliding seat 313 through a bearing, and the screw rod 341 is adapted to be screwed with a nut seat 342, and the nut seat 342 is fixedly connected to the second sliding seat 314. The first sliding seat 313 is also provided with a third driving unit 343, which is used to drive the sliding rod 110 to rotate, drive the nut seat 342 to slide along the sliding rod 110, and drive the second sliding seat 314 to move forward and backward along the sliding rod 110. The positions of the upper clamping block 315 and the lower clamping block 316 can be adjusted, and products of different lengths can be transported without changing the working parameters of the cam mechanism 200, which has extremely high practicality. The connecting rod assembly 350 is connected to one end of the first rocker arm 221 away from the rotating shaft 230 and the first slide seat 313, that is, one end of the first connecting rod 351 of the connecting rod assembly 350 is hinged to one end of the first rocker arm 221 away from the rotating shaft 230, and the other end of the second connecting rod 353 of the connecting rod assembly 350 is rollingly connected to the slide groove 332 of the first slide seat 313 through the third rolling member 355.

[0060] Among them, refer to Figure 4 and Figure 5 The third driving unit 343 is a motor, which is fixed on the frame 100. The motor shaft 230 is connected to one end of the screw rod 341 or the motor shaft 230 is connected to one end of the screw rod 341 through a transmission mechanism, and the motor drives the screw rod 341 to rotate. The transmission mechanism can be a gear box, a synchronous wheel and a synchronous belt transmission structure, a sprocket and a chain transmission structure, etc., which are not limited here.

[0061] Further, refer to Figure 4 and Figure 5 At least one slide bar 110 is provided on opposite sides of the frame 100, and the slide seats 311 are slidably connected to the slide bars 110 through a plurality of slide blocks 312. By providing a plurality of slide bars 110, the plurality of slide bars 110 are respectively located on the left and right sides of the first slide seat 313 and the second slide seat 314 of the slide seat 311, and the plurality of slide bars 110 play a guiding role, so that the first slide seat 313 and the second slide seat 314 can move more stably and smoothly along the slide bars 110, which is conducive to clamping the product through the upper clamp block 315 and the lower clamp block 316 and feeding the material stably, and the structure is stable.

[0062] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0063] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. A cam mechanism, characterized in that: include: A driving shaft, on which a first cam and a second cam are fixedly provided; as well as A swing frame, comprising a rotating end, and a first swing rod and a second swing rod provided at the rotating end; the first swing rod and the second swing rod are respectively provided with a first rolling member and a second rolling member, and the first rolling member and the second rolling member are respectively closely attached to the periphery of the first cam and the second cam; The driving shaft is used to drive the first cam and the second cam to rotate synchronously, thereby driving the swing frame to swing back and forth around the axis of the rotating end.

2. The cam mechanism according to claim 1, characterized in that: When the first cam and the second cam rotate synchronously, the first rolling element and the second rolling element always cling to and move along the peripheral wall contours of the first cam and the second cam respectively.

3. The cam mechanism according to claim 1, characterized in that: The centers of the first rolling element and the second rolling element are rotatably connected to the first swing rod and the second swing rod respectively through a first connecting shaft.

4. The cam mechanism according to claim 1, characterized in that: A rotating shaft is provided through the rotating end so that the swing frame can swing back and forth around the rotating shaft.

5. The cam mechanism according to claim 1, characterized in that: The first rolling element and the second rolling element are any one of rollers, bearings or balls.

6. The cam mechanism according to claim 1, characterized in that: The first cam and the second cam have different peripheral contour shapes.

7. The cam mechanism according to claim 1, characterized in that: One end of the driving shaft is connected to a first driving unit, and the first driving unit is used to drive the driving shaft to rotate.

8. The cam mechanism according to claim 1, characterized in that: One end of the second swing rod away from the rotating end is bent and extended to form an arc-shaped connecting portion, and the second rolling element is arranged in the middle of the second swing rod.

9. The cam mechanism according to claim 1, characterized in that: A line a connecting the contact point between the first rolling element and the first cam and the axis of the drive shaft, and a line b connecting the contact point between the second rolling element and the second cam and the axis of the drive shaft, the angle between the line a and the line b is ≥60°.

10. A cam driven feeding device, characterized in that: It comprises a frame, a feeding mechanism and the cam mechanism described in any one of claims 1 to 9; the end of the first swing rod away from the rotating end is connected to the feeding mechanism; the swing frame is used to drive the feeding mechanism to reciprocate when it swings back and forth, so as to transport products.

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