CN219746119U - Utilize cam groove to realize rotatory pay-off clamping jaw structure - Google Patents

Abstract

The utility model provides a feeding clamping jaw structure capable of realizing rotation by utilizing a cam groove, which comprises a left limiting unit and a right limiting unit, wherein the left limiting unit and the right limiting unit are symmetrically arranged on the upper surface of a die holder to move up and down; the passive clamping jaw and the active clamping jaw are synchronously linked through a bridging plate; one end of the transmission rod is inserted into the circular groove of the right limiting unit and connected with the tail part of the driving clamping jaw, and the other end of the transmission rod extends out of the right limiting unit and is connected with the drop-shaped connecting rod through a key groove structure and a screw; one end of the drop-shaped connecting rod, which is far away from the transmission rod, forms a convex drop-shaped sliding block; the cam groove mechanism is arranged on the side surface of the die holder, the water drop-shaped sliding block is clamped into the cam groove and moves along the cam groove to drive the transmission rod to rotate, and the part clamped in the clamping jaw assembly is driven to rotate. The mechanism for realizing the rotation of the clamping jaw through the guiding of the cam groove adopts the back and forth movement of the clamping jaw as a power source, and utilizes the water drop-shaped connecting rod to be matched with the cam groove structure, so that the overturning action of the part is realized while the clamping jaw is transferred.

Description

Utilize cam groove to realize rotatory pay-off clamping jaw structure

Technical Field

The utility model relates to the field of a transfer type drawing process, in particular to the technical field of rotating mechanisms, and specifically relates to a feeding clamping jaw structure capable of realizing rotation by utilizing a cam groove.

Background

In the automobile manufacturing industry, a large number of rotary parts exist, and due to the fact that the mechanism is complex, the precision requirement is high, turning technology is often adopted for machining, however, the turning technology is complex in process and high in cost, along with the development of stamping technology, a large number of parts can be realized through stamping technology, and in the stamping technology of the product, a transfer type drawing technology is the most complex, and the product is different from a common continuous and single-step drawing technology.

The transfer type process has the advantages that the part is clamped between the working procedures through the mechanical arm to be transferred, so that the process arrangement is more flexible, and particularly, when the part is required to be arranged in the process, the specific working procedure can be completed when the part is required to be overturned, so that the transfer type deep drawing process can exert the advantages.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a feeding jaw structure that uses cam grooves to achieve rotation, for solving the difficulties of the prior art.

To achieve the above and other related objects, the present utility model provides a feeding jaw structure for achieving rotation by cam grooves, comprising:

the left limiting unit 1 and the right limiting unit 2 are symmetrically arranged on the upper surface of the die holder 3 to move up and down, spaces for placing parts 4 and the heads of the clamping jaw assemblies are formed between the adjacent left limiting unit 1 and the adjacent right limiting unit 2 at intervals, and circular grooves 5 for installing the clamping jaw assemblies are formed in the left limiting unit 1 and the right limiting unit 2 along the direction perpendicular to the up-down movement;

the clamping jaw assembly is provided with a pair of passive clamping jaws 6 and active clamping jaws 7, the heads of the two clamping jaws are synchronously linked through a bridging plate 8, the tail parts of the passive clamping jaws 6 and the active clamping jaws 7 are respectively inserted into circular grooves 5 of the left limiting unit 1 and the right limiting unit 2, and springs 9 are sleeved between the heads and the side walls of the left limiting unit 1 and the right limiting unit 2;

an L-shaped assembly including a transmission rod 10 and a drop link 11;

one end of the transmission rod 10 is inserted into the circular groove 5 of the right limiting unit 2 and connected with the tail of the driving clamping jaw 7, and the other end of the transmission rod extends out of the right limiting unit 2 and is connected with the drop-shaped connecting rod 11 through a key groove structure and a screw;

the end of the drop-shaped connecting rod 11, which is far away from the transmission rod 10, forms a convex drop-shaped sliding block 12, and the end surface of the drop-shaped sliding block 12 is parallel to the tail end surface of the driving clamping jaw 7;

the cam groove mechanism 13 is arranged on the side surface of the die holder 3, two sides of the cam groove mechanism 13 close to the die holder 3 are horizontally arranged, a cam groove 133 is downwards arranged in the middle and is provided with a groove at the bottom, and the drop-shaped sliding block 12 is clamped into the cam groove 133 and moves along the cam groove 133 to drive the transmission rod 10 to rotate, so that the part 4 clamped in the clamping jaw assembly is driven to rotate.

According to a preferred solution, the left limit unit 1 and the right limit unit 2 each comprise:

a drive plate 14, wherein the inner side of the drive plate 14 is contacted with the upper surface of the die holder 3 and moves up and down along the upper surface;

a pressing plate 15, wherein the pressing plate 15 is installed above the front surface of the transmission plate 14 through bolts and pins, and the length of the pressing plate 15 along the direction perpendicular to the movement direction is larger than the width of the transmission plate 14;

a stop 16, said stop 16 being inserted from the front face of the pressure plate 15 and resting on the jaw assembly.

According to a preferred embodiment, the stoppers 16 are provided in a pair on the pressing plate 15, front and rear.

According to a preferred embodiment, the active jaw 7 comprises:

a first jaw body 71;

a first circumferential circular groove 72, wherein the first circumferential circular groove 72 is formed on a first clamping jaw body 71 positioned in the right limiting unit 2 to form a concave annular groove, and the width of the first circumferential circular groove 72 is larger than the width of the extending part of the stop block 16;

the first profiling end 73 is integrally arranged at the top of the first clamping jaw body 71, and a first rounding angle 74 is further arranged on the periphery of the top;

the flat bulge structure 75 is integrally arranged at the tail part of the first clamping jaw body 71;

the first mounting groove 76 is formed in the top side surface of the first clamping jaw body 71, a threaded hole 77 is reserved in the first mounting groove 76, and the first mounting groove 76 is internally clamped into the bridging plate 8 and is connected through the threaded hole 77 by a screw.

According to a preferred version, the passive jaw 6 comprises:

a second jaw body 61;

a second circumferential round groove 62, wherein the second circumferential round groove 62 is formed on a second clamping jaw body 61 positioned in the left limiting unit 1 to form a concave annular groove, and the width of the second circumferential round groove 62 is larger than the width of the extending part of the stop block 16;

the second profiling end 63 is integrally arranged at the top of the second clamping jaw body 61, and a second rounding corner 64 is further arranged on the periphery of the top;

the second mounting groove 65, the second mounting groove 65 is formed on the top side surface of the second clamping jaw body 61, and the second mounting groove 65 is internally clamped into the other end of the bridging plate 8.

According to a preferred embodiment, the stop 16 is T-shaped and comprises a horizontal end and a vertical end, wherein the vertical end is inserted into the circumferential grooves 5 of the driven clamping jaw 6 and the driving clamping jaw 7 in the pressing plate 15, so as to limit the movement range of the clamping jaw and the L-shaped assembly along the axial direction; the horizontal end is located on the front face of the pressure plate 15 and is locked by means of screws.

According to a preferred embodiment, the transmission rod 10 comprises:

a transmission rod body 101;

a flat groove 102, wherein the flat groove 102 is formed at the top of the transmission rod body 101, and a groove is formed in the middle of the flat groove for inserting the flat protrusion structure 75;

the third round groove 103 is formed on the transmission rod body 101 positioned in the right limiting unit 2, and the third round groove 103 is wider than the extending part of the other end stop block 16.

According to a preferred embodiment, the tail of the driving rod body 101 is provided with a screw connection groove.

According to a preferred embodiment, the drop link 11 is L-shaped and comprises a horizontal end and a vertical end, one end of the horizontal end is connected with the transmission rod 10, and the other end of the horizontal end reversely forms a drop slide 12 along a direction parallel to the transmission rod 10;

both ends of the drop-shaped sliding block 12 are arc-shaped, and the inner diameter of the inner cambered surface is smaller than that of the outer cambered surface.

According to a preferred embodiment, the outer arc of the drop shaped slider 12 coincides with the outer arc of the drop shaped link 11.

According to a preferred embodiment, the horizontal end of the drop-shaped slider 12 is provided with a recessed step for connecting the transmission rod 10, near the transmission rod 10 side.

According to a preferred embodiment, the cam groove mechanism 13 includes:

an upper guide plate 131 and a lower guide plate 132 disposed up and down, a cam groove 133 passing through the drop-shaped slider 12 being formed between the bottom of the upper guide plate 131 and the top of the lower guide plate 132;

a cam groove 133, a lowermost forming groove of the cam groove 133 being caught in the droplet-shaped slider 12;

the fixing plate 134, the side of the upper guide plate 131 and the lower guide plate 132 far away from the die holder 3 is mounted on the fixing plate 134 through screws and pins, and the fixing plate 134 is mounted on the die holder 3.

The mechanism for realizing the rotation of the clamping jaw through the guiding of the cam groove adopts the back and forth movement of the clamping jaw as a power source, and utilizes the water drop-shaped connecting rod to be matched with the cam groove structure, so that the overturning action of the part is realized when the clamping jaw is transmitted.

Preferred embodiments for carrying out the present utility model will be described in more detail below with reference to the attached drawings so that the features and advantages of the present utility model can be easily understood.

Drawings

FIG. 1 shows a front view of the present utility model;

FIG. 2 shows a front view of the present utility model;

FIG. 3 is an enlarged schematic view showing a three-dimensional structure of a driving jaw according to the present utility model;

FIG. 4 is an enlarged schematic view showing a three-dimensional structure of a passive clamping jaw according to the present utility model;

FIG. 5 is an enlarged schematic view showing a three-dimensional structure of a stopper according to the present utility model;

FIG. 6 is an enlarged schematic view showing a three-dimensional structure of a bridge plate according to the present utility model;

FIG. 7 is an enlarged schematic view showing a three-dimensional structure of an L-shaped component according to the present utility model;

FIG. 8 shows a front view of the L-shaped assembly of the present utility model;

FIG. 9 shows a left side view of the L-shaped assembly of the present utility model;

FIG. 10 shows a top view of the L-shaped assembly of the present utility model;

fig. 11 is an enlarged schematic view showing a three-dimensional structure of the cam groove mechanism in the present utility model;

fig. 12 is an enlarged schematic view showing the structure of the L-shaped member and the cam groove mechanism in the state of step S1 in the present embodiment;

fig. 13 is an enlarged schematic view showing the structure of the L-shaped member and the cam groove mechanism in the state of step S2 in the present embodiment;

fig. 14 is an enlarged schematic view showing the structure of the L-shaped member and the cam groove mechanism in the state of step S3 in the present embodiment;

fig. 15 is an enlarged schematic view showing the structure of the L-shaped member and the cam groove mechanism in the state of step S4 in the present embodiment;

fig. 16 is an enlarged schematic view showing the structure of the L-shaped member and the cam groove mechanism in the state of step S5 in the present embodiment; description of the reference numerals

1. A left limit unit;

2. a right limit unit;

3. a die holder;

4. a part;

5. a circular groove;

6. the clamping jaw comprises a passive clamping jaw body 61, a clamping jaw body II, a circumferential groove II, a profiling end II, a rounding angle II, a mounting groove II and a mounting groove II;

7. the clamping jaw comprises a driving clamping jaw body 71, a clamping jaw body 72, a circumferential circular groove 73, a profiling end 74, a rounding corner 75, a flat bulge structure 76, a mounting groove 77 and a threaded hole;

8. a bridging plate;

9. a spring;

10. the transmission rod, 101, the transmission rod body, 102, the flat groove, 103 and the third round groove;

11. a drop-shaped connecting rod;

12. a drop-shaped slider;

13. a cam groove mechanism 131, an upper guide plate 132, a lower guide plate 133, cam grooves 134, and a fixed plate;

14. a drive plate;

15. a pressing plate;

16. and a stop block.

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present utility model. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Possible embodiments within the scope of the utility model may have fewer components, have other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. than the examples shown in the drawings. Furthermore, two or more of the elements in the figures may be implemented in a single element or a single element shown in the figures may be implemented as multiple separate elements.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

The utility model provides a feeding clamping jaw structure capable of realizing rotation by utilizing a cam groove, which is used in the automobile manufacturing industry, and is not limited by the type of a turned part, but the feeding clamping jaw structure capable of realizing rotation by utilizing the cam groove is particularly suitable for clamping the part between working procedures by a mechanical arm in a transfer process, and the part can finish a specific working procedure when the part is required to be turned when the process is arranged, so that the transfer deep drawing process can play the advantages.

In general, the feeding jaw structure for realizing rotation by using the cam groove proposed by the present utility model mainly includes a left limit unit 1, a right limit unit 2, a jaw assembly, an L-shaped assembly, and a cam groove mechanism 13. Among them, reference can be made to fig. 1, which shows the arrangement relationship of the left limit unit 1, the right limit unit 2, the jaw assembly, the L-shaped assembly, and the cam groove mechanism 13.

In order to achieve the purpose that the parts are clamped between the working procedures through the mechanical arm to be transferred in the transfer type process, the process arrangement is more flexible, and particularly, when the parts are required to be arranged in the process arrangement, the specific working procedures can be completed when the parts are required to be overturned, and the transfer type deep drawing process can exert the advantages of the parts, in the technical scheme provided by the embodiment, a pair of symmetrical left limiting unit 1 and right limiting unit 2 are arranged on the upper surface of a die holder 3, the left limiting unit 1 and the right limiting unit 2 move up and down, the movement power of the left limiting unit 1 and the right limiting unit 2 is provided by punching equipment (not described in detail herein), a space for placing the parts 4 and the heads of clamping jaw assemblies is formed between the adjacent left limiting unit 1 and the right limiting unit 2 at intervals, and the clamping jaw assemblies for clamping the parts 4 are arranged in round grooves 5 which are arranged in the left limiting unit 1 and the right limiting unit 2 along the direction perpendicular to the up-down movement.

As shown in fig. 1 and 2, the clamping jaw assembly comprises a passive clamping jaw 6 and an active clamping jaw 7, the heads of the two clamping jaw 6 and the active clamping jaw 7 are synchronously linked through a bridging plate 8, the tail of the passive clamping jaw 6 is inserted into the left limiting unit 1, the tail of the active clamping jaw 7 is inserted into the right limiting unit 2, the tail is connected with the L-shaped assembly, a water drop-shaped connecting rod 11 in the L-shaped assembly is clamped in a cam groove 133 in a cam groove mechanism 13 to move, and the purposes of driving a transmission rod 10 to rotate and driving a part 4 clamped in the clamping jaw assembly to rotate are achieved; and a spring 9 is sleeved between the heads of the driven clamping jaw 6 and the driving clamping jaw 7 and the side walls of the left limiting unit 1 and the right limiting unit 2, and can be used for limiting and rebounding when the driven clamping jaw 6 and the driving clamping jaw 7 move left and right.

Specifically, as shown in fig. 2, the left limit unit 1 and the right limit unit 2 are respectively arranged in a structure including a transmission plate 14, a pressing plate 15 and a stopper 16, wherein the inner side of the transmission plate 14 is in contact with the upper surface of the die holder 3 and can only move up and down along the upper surface, the pressing plate 15 is mounted above the front surface of the transmission plate 14 by a screw and a pin, the length of the pressing plate 15 along the direction perpendicular to the movement direction is larger than the width of the transmission plate 14, and the clamping jaw mounted between the transmission plate 14 and the pressing plate 15 is limited to rotate and move left and right, so that the movement in other directions is limited; the stopper 16 is inserted from the front face of the pressing plate 15 and abuts against the jaw assembly for limiting the movement of the jaw and the L-shaped assembly in the left-right direction.

Regarding the limiting function of the pressing plate 15, the structures of the driving clamping jaw 7 and the driven clamping jaw 6 are required to be arranged firstly, as shown in fig. 4, the driven clamping jaw 6 is provided with a second clamping jaw body 61, a second circumferential circular groove 62 is formed on the second clamping jaw body 61 positioned in the left limiting unit 1, the second circumferential circular groove 62 is used for butting with the stop block 16, the stop block 16 is inserted into the second circumferential circular groove 62, and the driven clamping jaw 6 can only move left and right in the limited width of the second circumferential circular groove 62 because the width of the second circumferential circular groove 62 is larger than the width of the extending part of the stop block 16; in addition, in order to facilitate clamping of the parts during movement of the clamping jaw, the top of the second clamping jaw body 61 is provided with an integral second profiling end 63, and the periphery of the top is also provided with a second rounding corner 64.

As shown in fig. 3, the structure of the passive clamping jaw 6 corresponds to that, a first clamping jaw body 71 is also arranged in the active clamping jaw 7, a first circumferential circular groove 72 is formed on the first clamping jaw body 71 positioned in the right limiting unit 2 to form a concave annular groove, the stop block 16 is inserted into the first circumferential circular groove 72, and the left-right movement distance of the passive clamping jaw 6 is within the limit distance of the first circumferential circular groove 72 because the width of the first circumferential circular groove 72 is larger than the width of the extending part of the stop block 16; in addition, in order to facilitate gripping of the part during movement of the clamping jaw, a first profiling end 73 is integrally provided at the top of the first clamping jaw body 71, and a first rounding 74 is further provided at the periphery of the top.

As described above, the bridge plate 8 is adopted for the linkage between the driving clamping jaw 7 and the driven clamping jaw 6, the bridge plate 8 is in a U shape, the vertical ends of the two sides are respectively connected with the driving clamping jaw 7 and the driven clamping jaw 6, the driving clamping jaw 7 is provided with the first mounting groove 76 which can be clamped into one end of the bridge plate 8 on the top side surface of the first clamping jaw body 71, and the bridge plate 8 and the driving clamping jaw 7 are fixed by screws through the preset threaded holes 77; the other end of the bridging plate 8 is clamped into a second mounting groove 65 formed on the top side surface of the second clamping jaw body 61, so that the synchronous transmission of the rotation motion between the driving clamping jaw 7 and the driven clamping jaw 6 is realized.

As shown in fig. 11, the power source comes from the device, the rotation of the driving clamping jaw 7 and the driven clamping jaw 6 is realized through an L-shaped component and a cam groove mechanism 13, the driving clamping jaw 7 and the L-shaped component are connected through insertion, specifically, as shown in fig. 7-10, in this embodiment, a flat bulge structure 75 is integrally arranged at the tail part of a first clamping jaw body 71 in the driving clamping jaw 7, a flat slot 102 is formed at the top of a corresponding transmission rod body 101 of the transmission rod 10 in the L-shaped component, a groove is formed in the middle of the flat slot 102 and is used for sliding fit to realize the transmission of rotary force, a mounting sliding distance exists between the end face of the flat slot and the flat bulge structure 75 of the clamping jaw end face, when a part 4 enters the clamping jaw from the side, the clamping jaw overcomes the movement of springs 9 arranged at two sides to the two sides, and when the part 4 gradually enters the center of the clamping jaw, a certain movement range is also arranged for the round slot of a circle of the circle, a concave stop 103 is formed on the transmission rod body 101 in the right limiting unit 2, and the width of the circle 103 is larger than the other end of the circle slot of the circle 103; therefore, the stopper 16 is provided with a pair of front and rear sides on the pressing plate 15.

Preferably, the stop 16 is T-shaped and comprises a horizontal end and a vertical end, wherein the vertical end is inserted into the circumferential circular groove 5 of the driven clamping jaw 6 and the driving clamping jaw 7 in the pressing plate 15 and used for limiting the movement range of the clamping jaw and the L-shaped assembly along the axial direction, and the stop on the pressing plate limits the radial freedom degree of the transmission rod, so that the transmission rod can only move along with the pressing edge and rotate around the diameter; the horizontal end is located on the front face of the pressure plate 15 and is locked by means of screws.

It should be specifically noted that, in the structure of the transmission rod 10, one end of the transmission rod 10 is inserted into the circular groove 5 of the right limiting unit 2 and is connected with the tail of the driving clamping jaw 7, the other end extends out of the right limiting unit 2 and is connected with the drop-shaped connecting rod 11 through a key groove structure and a screw, and a screw connecting groove is preset at the tail of the transmission rod body 101; on the structure of the drop-shaped connecting rod 11, the drop-shaped connecting rod 11 is L-shaped, and comprises a horizontal end and a vertical end, one end of the horizontal end is provided with a concave step for connecting the transmission rod 10, stable installation is facilitated, rotation is limited, the other end reversely forms a drop-shaped sliding block 12 along the direction parallel to the transmission rod 10, two ends of the drop-shaped sliding block 12 are arc-shaped, the inner diameter of an inner arc surface is smaller than the inner diameter of an outer arc surface, the outer arc surface of the drop-shaped sliding block 12 is overlapped with the outer arc surface of the drop-shaped connecting rod 11, and the end surface of the drop-shaped sliding block 12 is parallel to the tail end surface of the driving clamping jaw 7.

As shown in fig. 11, in order to enable the L-shaped assembly passing through the cam groove mechanism 13 to make a 180 ° rotation, for this purpose, the cam groove mechanism 13 is installed at a side of the die holder 3, and a cam groove 133 having both sides in a horizontal state and a groove provided downward in the middle and at the bottom is opened on a side of the cam groove mechanism 13 near the die holder 3, the cam groove 133 being formed of an upper guide plate 131 and a lower guide plate 132 installed at the top and bottom of a fixing plate 134, the fixing plate 134 being installed on the die holder 3.

As shown in fig. 12, step S1: the large diameter end of the drop link of the L-shaped assembly is now set in the direction of movement, with the drop slider 12 on one side of the horizontal end of the cam slot 133 ready for movement;

as shown in fig. 13, step S2: when the whole clamping jaw moves to the right side, the large-diameter end of the drop-shaped connecting rod moves to the right lower side along the cam groove and drives the transmission rod to move clockwise;

as shown in fig. 14, step S3: a groove provided at the bottom of the cam groove prevents the large-diameter end from continuing to move to the right side when the large-diameter portion moves to the bottom of the cam groove;

as shown in fig. 15, step S4: the small-diameter part of the water drop connecting rod rotates clockwise around the large-diameter part along with the clamping jaw continuously moves right until the small-diameter part rotates to the right and continuously moves right along with the clamping jaw;

the small-diameter part starts to play a guiding role, the transmission rod continuously rotates clockwise around the shaft in the process of moving upwards and rightwards along the guide groove, the right-moving drop-shaped connection rod continuously moves to the right-side platform position, at the moment, the flat groove on the transmission rod just rotates 180 degrees to finish part overturning, and the linear movement distance of the clamping jaw is just one step distance;

as shown in fig. 16, step S5: the whole L-shaped assembly moves reversely according to the previous movement process when the clamping jaw returns, and the clamping jaw completes 180 degrees of clockwise rotation when the drop-shaped connecting rod reaches the left side platform.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Therefore, to the extent that all equivalent modifications or body accomplished by a person of ordinary skill in the art without departing from the spirit and technical spirit of the present disclosure are as shown in FIG. 2, for the purpose of obtaining a stable moving structure and restraining a driving structure, the structures of the left and right limiting units 1 and 2 are arranged as follows

Changes, and still be covered by the claims of this utility model.

Claims (7)

1. A feeding jaw structure for effecting rotation by means of a cam slot, comprising:

the device comprises a left limiting unit (1) and a right limiting unit (2), wherein the left limiting unit (1) and the right limiting unit (2) are symmetrically arranged on the upper surface of a die holder (3) to move up and down, a space for placing a part (4) and the head of a clamping jaw assembly is formed between the left limiting unit (1) and the right limiting unit (2) adjacently at intervals, and a circular groove (5) for installing the clamping jaw assembly is formed in the left limiting unit (1) and the right limiting unit (2) along a direction vertical to the up-down movement;

the clamping jaw assembly is provided with a pair of passive clamping jaws (6) and active clamping jaws (7), heads of the two clamping jaws are synchronously linked through a bridging plate (8), tail parts of the passive clamping jaws (6) and the active clamping jaws (7) are respectively inserted into circular grooves (5) of the left limiting unit (1) and the right limiting unit (2), and springs (9) are sleeved between the heads and side walls of the left limiting unit (1) and the right limiting unit (2);

the L-shaped assembly comprises a transmission rod (10) and a drop-shaped connecting rod (11);

one end of the transmission rod (10) is inserted into the circular groove (5) of the right limiting unit (2) and connected with the tail of the driving clamping jaw (7), and the other end of the transmission rod extends out of the right limiting unit (2) and is connected with the drop-shaped connecting rod (11) through a key groove structure and a screw;

one end of the drop-shaped connecting rod (11) far away from the transmission rod (10) forms a convex drop-shaped sliding block (12), and the end surface of the drop-shaped sliding block (12) is parallel to the tail end surface of the driving clamping jaw (7);

the cam groove mechanism (13), the side at die holder (3) is installed in cam groove mechanism (13), offer both sides on the side that cam groove mechanism (13) are close to die holder (3) and present the horizontality, centre is downwards and be provided with grooved cam groove (133) in the bottom, drop shape slider (12) card is gone into cam groove (133) and is moved along cam groove (133) and drive transfer line (10) rotation, and part (4) of drive clamp in clamping jaw subassembly are rotatory.

2. The feeding jaw structure using cam grooves to realize rotation according to claim 1, wherein the left and right limit units (1, 2) each comprise:

the inner side of the transmission plate (14) is contacted with the upper surface of the die holder (3) and moves up and down along the upper surface;

the pressing plate (15) is arranged above the front surface of the transmission plate (14) through screws and pins, and the length of the pressing plate (15) along the direction perpendicular to the movement direction is larger than the width of the transmission plate (14);

and the stop block (16) is inserted from the front surface of the pressing plate (15) and is abutted against the clamping jaw assembly.

3. The feeding jaw structure for rotation with cam grooves according to claim 2, characterized in that the active jaw (7) comprises:

a first clamping jaw body (71);

the first round groove (72) is formed on the first clamping jaw body (71) positioned in the right limiting unit (2), and the width of the first round groove (72) is larger than the width of the extending part of the stop block (16);

the first profiling end (73) is integrally arranged at the top of the first clamping jaw body (71), and a first rounding (74) is further arranged on the periphery of the top;

the flat bulge structure (75) is integrally arranged at the tail part of the first clamping jaw body (71);

the first mounting groove (76) is formed in the side face of the top of the first clamping jaw body (71) and is provided with a threaded hole (77), and the first mounting groove (76) is internally clamped into the bridging plate (8) and is connected through the threaded hole (77) by a screw.

4. A feeding jaw structure implementing rotation with cam grooves according to claim 3, characterized in that said passive jaw (6) comprises:

a second clamping jaw body (61);

the second round groove (62) is formed in a second clamping jaw body (61) positioned in the left limiting unit (1), and the width of the second round groove (62) is larger than that of the extending part of the stop block (16);

the second profiling end (63) is integrally arranged at the top of the second clamping jaw body (61), and a second rounding (64) is further arranged on the periphery of the top;

the second mounting groove (65), no. two mounting groove (65) are offered on the top side of No. two clamping jaw bodies (61), the other end of bridging board (8) is gone into to the card in No. two mounting groove (65).

5. The feeding jaw structure using cam grooves to realize rotation according to claim 4, wherein the transmission rod (10) comprises:

a transmission rod body (101);

the flat groove (102) is formed in the top of the transmission rod body (101), and a groove is formed in the middle of the flat groove and inserted into the flat protrusion structure (75);

the third round groove (103), the third round groove (103) is arranged on the transmission rod body (101) positioned in the right limiting unit (2) to form a concave annular groove, and the width of the third round groove (103) is larger than the width of the extending part of the other end stop block (16).

6. The feeding jaw structure using cam grooves to realize rotation according to claim 5, wherein the drop-shaped connecting rod (11) is L-shaped and comprises a horizontal end and a vertical end, one end of the horizontal end is connected with the transmission rod (10), and the other end is reversely formed into a drop-shaped sliding block (12) along a direction parallel to the transmission rod (10);

both ends of the drop-shaped sliding block (12) are arc-shaped, and the inner diameter of the inner cambered surface is smaller than that of the outer cambered surface.

7. The feeding jaw structure for rotation using cam grooves according to claim 6, wherein the cam groove mechanism (13) comprises:

an upper guide plate (131) and a lower guide plate (132) which are arranged up and down, wherein a cam groove (133) passing through the drop-shaped sliding block (12) is formed between the bottom of the upper guide plate (131) and the top of the lower guide plate (132);

a cam groove (133), wherein a lowermost groove of the cam groove (133) is engaged with the drop-shaped slider (12);

the fixing plate (134), one side of the upper guide plate (131) and the lower guide plate (132) far away from the die holder (3) is installed on the fixing plate (134) through bolts and pins, and the fixing plate (134) is installed on the die holder (3).