CN220636235U - Calibration head and net discharging mechanism for net discharging machine - Google Patents

Abstract

The utility model discloses a calibration head and a net placing mechanism for a net placing machine, wherein a first inclined plane of the calibration head can facilitate a metal net to be accurately and quickly taken into a calibration cylinder; the clamping groove can be used for quickly mounting the calibration cylinder of the calibration head on the net-laying mechanism; the clamping groove corresponds to the guide groove, and the calibration cylinder of the calibration head can be accurately and rapidly installed on the net-laying mechanism; this net mechanism of putting through adopting this calibration head, can realize the quick assembly disassembly of calibration head on net mechanism of putting, can accelerate net speed, improves net success rate to reduce the human input, reduction in production cost improves trade competitiveness.

Description

Calibration head and net discharging mechanism for net discharging machine

Technical Field

The utility model belongs to the technical field of casting equipment, and particularly relates to a calibration head for a net laying machine and a net laying mechanism.

Background

Currently, in casting shops, net-casting machine equipment is used in many cases. The net-laying machine can be used for placing the filter net at the pouring gate in the hub production process, for example. The filter screen can be divided into an iron-nickel screen and a fiber filter screen. The machine head of the net-laying machine for fiber net is provided with a plurality of clamping jaws, and the iron-nickel net head is required to be manually arranged on the machine head of the net-laying machine.

In the prior art, the machine head of the net placing machine is slower to install, the net taking precision is poor, the net placing success rate is low, and the requirements of increasing industry competition, reducing manpower input and reducing production cost cannot be met.

Disclosure of Invention

The utility model aims to overcome at least one aspect of the defects in the prior art, and provides a calibration head and a net discharging mechanism for a net discharging machine, which can accelerate net discharging speed and improve net discharging success rate, thereby reducing manpower input, lowering production cost and improving industry competitiveness.

In order to achieve the above object, the technical scheme of the present utility model is as follows:

in a first aspect, the utility model provides a calibration head for a net laying machine, which comprises a calibration cylinder, wherein the side wall of one end of the calibration cylinder is provided with at least two clamping grooves which are uniformly distributed; the inner wall of the clamping groove of the calibration cylinder is provided with a first inclined plane with a conical surface, and the cone angle of the first inclined plane faces the inside of the calibration cylinder; the inner wall of the other end of the groove type clamping device is provided with groove type guide grooves, and the number of the guide grooves is equal to that of the clamping grooves; the symmetrical axis of each guide groove is positioned in the same plane with the central axis of the calibration cylinder and the symmetrical axis of one clamping groove.

The calibration head for the net-placing machine is provided with the first inclined surface with the conical surface, so that the metal net can be conveniently and accurately and quickly taken into the calibration cylinder; the clamping groove is provided with an open groove, and the clamping claw of the net placing mechanism can be clamped in the clamping groove, so that the calibration cylinder of the calibration head can be quickly installed on the net placing mechanism; the extending direction of the depth of each clamping groove is correspondingly matched with one groove type guide groove, the clamping claw stretches into the guide groove and stretches into the clamping groove in a clamping manner through the guide groove, and the calibration cylinder of the calibration head is accurately and rapidly mounted on the net laying mechanism.

Preferably, a second inclined plane with a conical surface is arranged on the inner wall of the other end of the calibration cylinder, and the cone angle of the second inclined plane faces the inside of the calibration cylinder.

Preferably, the central axes of the first inclined plane and the second inclined plane coincide.

Preferably, the calibration cylinder is provided with an annular portion between the first and second inclined surfaces.

Preferably, three clamping grooves are formed.

In a second aspect, the present utility model provides a net-laying mechanism, comprising the calibration head and net-laying assembly of any one of the first aspects of the present utility model, the net-laying assembly comprising a fixed cylinder, a first cylinder, a movable ring, a pull rod, a claw, a lower fixed disc and a magnet; the first cylinder is arranged at one end of the fixed cylinder and is movably provided with a first movable rod; the movable ring is movably sleeved on the fixed cylinder and is connected with the end part of the first movable rod; the pull rod is provided with at least two groups, the number of which is equal to the number of the clamping grooves formed in the calibration cylinder of the calibration head; the pull rods are uniformly distributed on the same circumference, and one end of each pull rod is connected with the movable ring; the clamping claws are arranged in an L-shaped bending structure, and the number of the clamping claws is the same as the number of the groups of the pull rods; one end of each claw is respectively and rotatably connected with the other end of a group of pull rods, and the bending part of each claw is respectively and rotatably connected with the fixed cylinder; the lower fixing disc is annular, one side of the lower fixing disc is connected with the other end of the fixing cylinder, and the hollow part of the lower fixing disc is connected with the hollow part of the fixing cylinder; at least two perforations are formed in the clamping jaw, the number of the perforations is equal to that of the clamping jaws, and the perforations are uniformly distributed on the same circumference; the other end of each claw penetrates through one through hole respectively; the magnet is arranged at the end part of the second movable rod and is positioned at the other side of the lower fixed disc, the second movable rod is arranged in the hollow part of the fixed cylinder and is movably arranged on a second cylinder, and the second cylinder is arranged on the fixed cylinder; the calibration head is provided with the calibration cylinder which is arranged on the other side of the lower fixed disc, and one side of the guide groove faces the lower fixed disc; the other end of the claw stretches into the guide groove and stretches into the clamping groove through the guide groove.

According to the net placing mechanism, by adopting the calibration head for the net placing machine, quick disassembly and assembly of the calibration head on the net placing mechanism can be realized, net placing speed can be increased, net placing success rate is improved, labor input is reduced, production cost is reduced, and industry competitiveness is improved.

Preferably, the other end of the claw extends out of the calibration cylinder through the clamping groove.

Preferably, the movable ring is provided with a connecting hole, and the end part of the first movable rod is provided with a screw rod; the end part of the first movable rod passes through the connecting hole, and two nuts are connected to the first movable rod in a threaded manner; the two nuts are respectively arranged at two sides of the movable ring and respectively contact with the movable ring.

Preferably, two pull rods are arranged in each group, and one end of each claw is respectively arranged between the other ends of the two pull rods in each group.

Preferably, the through hole is provided as a T-shaped through hole with a longitudinal portion thereof directed toward the center of the lower fixing plate; the other end of the pull rod extends into the transverse portion of the through hole, and the other end of the claw extends into the longitudinal portion of the through hole.

The calibration head and the net discharging mechanism for the net discharging machine have the following beneficial effects:

1. according to the calibration head for the net placing machine, the first inclined surface with the conical surface is arranged for placing the metal net, so that the metal net can be conveniently and accurately and rapidly taken into the calibration cylinder; the clamping groove with the open groove is used for clamping the clamping claw connected with the net discharging mechanism, so that the calibration cylinder of the calibration head can be quickly installed on the net discharging mechanism; through the guide slot of a corresponding matching recess formula in the degree of depth extension direction at every draw-in groove for play the guide effect to the jack catch, can realize installing its calibration section of thick bamboo of calibration head accurately and rapidly to the net mechanism.

2. According to the calibration head for the net placing machine, the second inclined plane with the conical surface is arranged on the inner wall of the other end of the calibration cylinder, so that the cone angles of the first inclined plane and the second inclined plane are opposite, the calibration head can be more suitable for clamping claws with a bending structure, damage to the clamping claws is avoided, and the weight of the calibration cylinder can be reduced.

3. According to the net placing mechanism, the calibration head for the net placing machine can be quickly disassembled and assembled on the net placing mechanism, net placing speed can be increased, net placing success rate is improved, labor investment is reduced, production cost is reduced, and industry competitiveness is improved.

Drawings

Fig. 1 is a schematic diagram of a front view direction structure of a calibration head for a net player according to the embodiment of the present utility model.

Fig. 2 is a front view of a calibration head for a net-laying machine according to the embodiment of the present utility model.

Fig. 3 is a bottom view of a calibration head for a net drop machine according to an embodiment of the present utility model.

Fig. 4 is a schematic top view of a calibration head for a net-laying machine according to the embodiment of the present utility model.

Fig. 5 is a top view of a calibration head for a net feeder according to the embodiment of the present utility model.

Fig. 6 is a front view of the net release mechanism according to the embodiment of the present utility model.

Fig. 7 is a front view of a net discharging assembly of the net discharging mechanism according to the embodiment of the present utility model.

Fig. 8 is a front view of the claw of the net discharging assembly of the net discharging mechanism provided by the embodiment of the utility model.

Fig. 9 is a top view of a lower fixing plate of a net discharging assembly of the net discharging mechanism provided by the embodiment of the utility model.

Reference numerals in the drawings:

1 is a calibration cylinder, 110 is a clamping groove, 120 is a first inclined surface, 130 is a guide groove, 140 is a second inclined surface, 150 is an annular part, 2 is a fixed cylinder, 3 is a first cylinder, 310 is a first movable rod, 311 is a nut, 4 is a movable ring, 5 is a pull rod, 6 is a claw, 610 is a first shaft hole, 611 is a first rotating shaft, 620 is a second shaft hole, 630 is a protruding structure, 7 is a lower fixed disc, 710 is a through hole, 8 is a magnet, and 9 is an upper fixed disc.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

Example 1

Referring to fig. 1 to 5 in combination, a calibration head for a net laying machine includes a calibration cylinder 1, as shown in fig. 1, 3 and 4, a side wall at one end of the calibration cylinder 1 is provided with at least two open slot type clamping slots 110, and the clamping slots 110 are uniformly distributed; as shown in fig. 1 to 4, the calibration cylinder 1 is provided with a first inclined surface 120 having a conical surface on the inner wall at the clamping groove 110, and the taper angle of the first inclined surface 120 faces the inside of the calibration cylinder 1; as shown in fig. 1, 2, 4 and 5, the inner wall of the other end of the groove type guide groove 130 is provided with the same number of guide grooves 130 and clamping grooves 110; the symmetry axis of each guide slot 130 is located in the same plane as the central axis of the calibration cylinder 1 and the symmetry axis of one clamping slot 110.

Referring to fig. 1 to 6 in combination, the calibration head for a net-laying machine of the present embodiment is provided with a conical first inclined surface 120 for laying a metal net, which can facilitate the metal net to be accurately and rapidly taken into the calibration cylinder 1. The open slot type clamping groove 110 is used for clamping the clamping claw 6 connected with the net discharging mechanism, and the clamping claw 6 of the net discharging mechanism is clamped in the clamping groove 110, so that the calibration cylinder 1 of the calibration head can be quickly installed on the net discharging mechanism. Each clamping groove 110 is correspondingly matched with a groove-type guide groove 130 in the extending direction of the depth, the guide groove 130 is used for guiding the clamping jaw 6, the clamping jaw 6 stretches into the guide groove 130 and stretches into the clamping groove 110 through the guide groove 130 to be clamped in the clamping groove 110, and the calibration cylinder 1 of the calibration head is accurately and rapidly installed on the net placing mechanism.

As shown in fig. 1 to 5, the calibration cylinder 1 may be provided as a cylinder in particular.

As shown in fig. 3, the clamping grooves 110 are provided with three clamping grooves 110 which are uniformly distributed along the circumference on the side wall of the calibration cylinder 1. The clamping claws 6 which are matched and arranged on the net discharging mechanism are also provided with three clamping claws 6, so that the clamping claws 6 can be clamped in the clamping grooves 110, and the calibration head can be quickly and stably arranged on the net discharging mechanism.

As shown in fig. 1, 3 and 4, the card slot 110 is provided as a rectangular open slot. The guide groove 130 is provided as a rectangular groove.

As shown in fig. 1, 2, 4 and 5, in some embodiments, the inner wall of the other end of the calibration cylinder 1 is provided with a second inclined surface 140 having a conical surface, and the taper angle of the second inclined surface 140 faces the inside of the calibration cylinder 1, that is, the taper angles of the first inclined surface 120 and the second inclined surface 140 are opposite. The second inclined plane 140 can be more suitable for the claw 6 with a bending structure, so that the claw 6 is prevented from being damaged, and the weight of the calibrating cylinder 1 can be reduced.

As shown in fig. 2, the central axes of the first inclined surface 120 and the second inclined surface 140 may be particularly coincident, thereby improving the balance stability of the calibration cylinder 1.

As shown in fig. 3 and 4, in some embodiments, the calibration cylinder 1 is provided with an annular portion 150 between the first ramp 120 and the second ramp 140. The inner wall of the annular portion is configured as a cylindrical surface to facilitate the machining of the first and second inclined surfaces 120, 140 on the inner wall of the calibration cylinder 1.

It may be specifically that when the calibration cylinder 1 is a cylinder, a circular ring portion is provided between the first inclined surface 120 and the second inclined surface 140.

Example 2

Referring to fig. 1 to 9 in combination, a net discharging mechanism, as shown in fig. 6, includes the calibration head and net discharging assembly according to any one of the embodiment 1, as shown in fig. 7 to 9, the net discharging assembly includes a fixed cylinder 2, a first cylinder 3, a movable ring 4, a pull rod 5, a claw 6, a lower fixed disk 7, and a magnet 8, as shown in fig. 6 and 7, the first cylinder 3 is mounted on one end of the fixed cylinder 2, and is movably provided with a first movable rod 310; the movable ring 4 is movably sleeved on the fixed cylinder 2 and is connected with the end part of the first movable rod 310; the pull rod 5 is provided with at least two groups, the number of which is equal to the number of the clamping grooves 110 arranged on the calibration cylinder 1 of the calibration head; the plurality of pull rods 5 are uniformly distributed on the same circumference, and one ends of the pull rods are connected with the movable ring 4; as shown in fig. 6 to 8, the claws 6 are provided in an L-shaped bent structure in the same number as the number of groups of the tie rods 5; as shown in fig. 6 and 7, one end of each claw 6 is respectively and rotatably connected with the other end of a group of pull rods 5, and the bending part of each claw 6 is respectively and rotatably connected with the fixed cylinder 2; as shown in fig. 6, 7 and 9, the lower fixing plate 7 is provided in a ring shape, and one side thereof is connected to the other end of the fixing cylinder 2, and a hollow portion thereof is connected to the hollow portion of the fixing cylinder 2; at least two through holes 710 are formed in the clamping jaw, the number of the through holes 710 is equal to that of the clamping jaws 6, and the through holes 710 are uniformly distributed on the same circumference; as shown in fig. 6 and 7, the other end of each claw 6 passes through one through hole 710, respectively; the magnet 8 is arranged at the end part of the second movable rod and positioned at the other side of the lower fixed disc 7, the second movable rod is arranged in the hollow part of the fixed cylinder 2 and is movably arranged on a second cylinder, and the second cylinder is arranged on the fixed cylinder 2; the calibrating head has its calibrating cylinder 1 mounted on the other side of the lower fixed disk 7, and one side of the guide slot 130 faces the lower fixed disk 7; the other end of the claw 6 extends into the guide groove 130 and is inserted into the clamping groove 110 through the guide groove 130.

The net placing mechanism of the embodiment is used for being installed on a net placing machine, and can comprise the following steps in working:

mounting a calibration head: the clamping claws 6 with the L-shaped bending are pinched by hands, the other ends of the clamping claws 6 shrink inwards through the rotary mounting structures at one ends and the bending positions of the clamping claws, and simultaneously the clamping claws 6 are matched with the rotary mounting structures at the bending positions and one ends of the clamping claws 6, so that one ends of the clamping claws 6 sequentially push the pull rod 5, the movable ring 4 and the first movable rod 310 to retract; then, the side of the guide groove 130 of the calibration cylinder 1 of the calibration head faces the lower fixing disc 7, and the calibration cylinder 1 is sleeved outside the clamping jaw 6; after the clamping claws 6 are aligned to the clamping grooves 110 respectively, the clamping claws 6 are loosened, and under the sequential pushing action of the first movable rod 310 on the movable ring 4 and the pull rod 5, one end of the clamping claws 6 and the rotary mounting structure at the bending position of the clamping claws are matched, so that the other ends of the clamping claws 6 are clamped into the clamping grooves 110 respectively, and the calibration cylinder 1 of the calibration head is clamped and mounted on the other side of the lower fixed disc 7;

taking a metal net: the net placing mechanism and the calibration head are moved to the metal net, and the metal net is accurately and rapidly sucked to the center position in the calibration cylinder 1 by matching with the conical first inclined surface 120 on the inner wall of the calibration cylinder 1 of the calibration head while the metal net is sucked by the magnet 8;

placing a metal net: moving the net discharging mechanism and the calibrating head to a pouring gate in the production process of the hub, aligning the metal net with the pouring gate, and moving the net discharging mechanism and the calibrating head towards the pouring gate until the metal net is placed in the pouring gate; at the moment, the whole net discharging mechanism and the calibration head are fixed, so that the calibration cylinder 1 of the calibration head continuously supports against the metal net, and then the second movable rod is contracted through the second cylinder, so that the magnet 8 is contracted and retreated to be separated from the metal net; finally, the net placing mechanism and the calibration head are removed, and the metal net is placed in the pouring gate;

dismantling the calibration head: the plurality of L-shaped bending clamping claws 6 are pinched by hands, one end of each L-shaped bending clamping claw is retracted inwards through the rotary mounting structure of the bending part of each L-shaped bending clamping claw, and the other end of each L-shaped bending clamping claw is retracted by pushing the first movable rod 310 to be retracted simultaneously so as to be separated from the clamping connection with the clamping groove 110, so that the calibration cylinder 1 of the calibration head is detached from the net-laying mechanism.

Therefore, the net-laying mechanism of this embodiment can realize the quick assembly and disassembly of the calibration head on the net-laying mechanism by adopting the calibration head of any one of embodiments 1, can accelerate net-laying speed, and improve net-laying success rate, thereby reducing manpower input, reducing production cost and improving industry competitiveness.

The net laying assembly can adopt the prior art product according to actual conditions, and can realize the actions and functions.

As shown in fig. 6 and 7, the fixed cylinder 2 may be specifically provided as a cylinder. The first cylinder 3 is provided with a first movable rod 310, and the first cylinder 3 is fixedly connected to the outer wall of the fixed cylinder 2. Or, one end of the fixed cylinder 2 is sleeved with an upper fixed disc 9, and the first cylinder 3 is fixedly connected to the upper fixed disc 9. The upper fixing plate 9 is a circular ring plate which is sleeved and fixedly connected to the outside of the fixing cylinder 2.

The movable ring 4 is a circular ring, and is movably sleeved outside the fixed cylinder 2. The movable ring 4 is fixedly connected with the tail end of the first movable rod 310, and under the action of the first air cylinder 3, the movable ring 4 can slide along the fixed cylinder 2 under the drive of the first movable rod 310.

It may be specific that the claws 6, the clamping grooves 110, the guide grooves 130, the through holes 710 are respectively provided with three, and the tie rod 5 is provided with three groups. One end of the L-shaped bent claw 6 is provided with a first shaft hole 610, the bent part is provided with a second shaft hole 620, the other end of the pull rod 5 is provided with a third shaft hole, the outer wall of the fixed cylinder 2 is connected with a shaft plate, and the shaft plate is provided with a fourth shaft hole; the first shaft hole 610 and the third shaft hole are internally provided with a first rotating shaft 611, the second shaft hole 620 and the fourth shaft hole are internally provided with a second rotating shaft, one end of the claw 6 is rotationally connected to the pull rod 5 through the first rotating shaft 611, and the bending part of the claw 6 is rotationally connected to the fixed cylinder 2 through the second rotating shaft.

In some embodiments, the movable ring 4 is provided with a connecting hole, and the end part of the first movable rod 310 is provided with a screw rod; the end part of the first movable rod 310 passes through the connecting hole, and two nuts 311 are connected to the first movable rod 310 in a threaded manner; the two nuts 311 are respectively arranged at two sides of the movable ring 4 and respectively contact the movable ring 4; the movable ring 4 is more stably and firmly coupled to the end of the first movable rod 310 by the two nuts 311 respectively contacting and clamping the movable ring 4 at the upper and lower sides of the movable ring 4.

In some embodiments, two tie rods 5 are provided in each group, and one end of each claw 6 is respectively arranged between the other ends of the two tie rods 5 in each group, so that one end of each claw 6 is stably and firmly rotatably arranged between the two tie rods 5.

In some embodiments, the magnet 8 is provided as a cylinder or rectangular block, which is fixedly connected to the end of the second movable rod.

The second cylinder is provided with a second movable rod, the second cylinder is arranged on the inner wall of one end of the fixed cylinder 2, and the second movable rod stretches into the fixed cylinder 2.

The movable ring 4 is sleeved and connected to the outside of the movable cylinder, the movable cylinder is movably sleeved and arranged on the outside of the fixed cylinder 2, so that the movable ring 4 can be conveniently and movably sleeved and arranged on the outside of the fixed cylinder through the movable cylinder, and the stability of the movable ring 4 during movement is improved.

As shown in fig. 6, it may be concrete that one end of the calibration cylinder 1 provided with the guide groove 130 contacts the other side surface of the lower fixing plate 7.

In some embodiments, the other end of the claw 6 protrudes outside the calibration cylinder 1 through the clamping groove 110, which facilitates the claw 6 to be clamped in the clamping groove 110 more stably, so that the calibration head is mounted on the net-laying assembly more firmly.

As shown in fig. 6 to 8, the cross section of the claw 6 is rectangular. The pull rod 5 is a rectangular rod.

As shown in fig. 8, the outer side surface of the other end of the claw 6 may be provided with a protruding structure 630, which is beneficial for the protruding structure 630 to be clamped outside the clamping groove 110, so as to further ensure that the claw 6 is stably clamped in the clamping groove 110. Here, the outer side means the side away from the central axis of the fixed cylinder 2.

The raised structures 630 are provided as arcuate raised surfaces.

As shown in fig. 6, 7 and 9, it may be concrete that the lower fixing plate 7 is provided in a circular shape, one side surface of which is fixedly connected to the other end of the fixing cylinder 2, and an inner hollow portion of which is communicated with the inner hollow portion of the fixing cylinder 2.

The perforations 710 are provided as strip-shaped holes that facilitate the passage of the jaws 6 and the retraction or expansion thereof.

As shown in fig. 9, the perforation 710 may be specifically provided as a T-shaped through hole with a longitudinal portion thereof directed toward the center of the lower fixing plate 7; the other end of the pull rod 5 extends into the transverse portion of the through hole 710, and the other end of the claw 6 extends into the longitudinal portion of the through hole 710; so that the tie rod 5 can extend into the transverse portion of the T-shaped through hole of the through hole 710 as it follows the movable ring 4 toward the lower fixed plate 7. The other end of the claw 6 is inserted into the longitudinal portion of the T-shaped through hole of the through hole 710, so that the claw can be conveniently contracted and expanded.

It is possible to specifically connect the perforation 710 with the hollow portion of the inner side of the lower fixing plate 7, i.e., the perforation 710 communicates with the hollow portion of the lower fixing plate 7, enabling weight saving.

Wherein, fixed cylinder 2, lower fixed disk 7 and upper fixed disk 9 all can set up to the metalwork, and lower fixed disk 7 and upper fixed disk 9 can weld with fixed cylinder 2. The tie rod 5 and the movable ring 4 may be connected by bolts, or both may be provided as metal pieces and welded. The magnet 8 and the second movable rod may be connected by a bolt. The movable ring and the movable cylinder can be both arranged as metal pieces and welded.

The foregoing examples are provided for clarity of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to have a specific orientation, are configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Claims (10)

1. A calibration head for a net pay-off machine, comprising:

the side wall of one end of the calibration cylinder is provided with at least two open slot type clamping grooves which are uniformly distributed; the inner wall of the clamping groove of the calibration cylinder is provided with a first inclined plane with a conical surface, and the cone angle of the first inclined plane faces the inside of the calibration cylinder; the inner wall of the other end of the groove type clamping device is provided with groove type guide grooves, and the number of the guide grooves is equal to that of the clamping grooves; the symmetrical axis of each guide groove is positioned in the same plane with the central axis of the calibration cylinder and the symmetrical axis of one clamping groove.

2. The head according to claim 1, wherein a second inclined surface having a conical surface is provided on an inner wall of the other end of the calibration cylinder, and a taper angle of the second inclined surface is directed toward an inside of the calibration cylinder.

3. The head according to claim 2, wherein the central axes of the first and second inclined surfaces coincide.

4. The calibration head for a pay-off machine according to claim 2, wherein the calibration cylinder is provided with an annular portion between the first inclined surface and the second inclined surface.

5. The calibration head for a net drop machine according to any one of claims 1 to 4, wherein three card slots are provided.

6. A pay-off mechanism comprising a calibration head according to any one of claims 1 to 5 and a pay-off assembly, the pay-off assembly comprising:

a fixing cylinder is arranged on the upper surface of the fixing cylinder,

the first cylinder is arranged at one end of the fixed cylinder and is movably provided with a first movable rod;

the movable ring is movably sleeved on the fixed cylinder and is connected with the end part of the first movable rod;

the pull rod is provided with at least two groups, and the number of the groups is equal to the number of the clamping grooves formed in the calibration cylinder of the calibration head; the pull rods are uniformly distributed on the same circumference, and one end of each pull rod is connected with the movable ring;

the clamping claws are arranged into L-shaped bending structures, and the number of the clamping claws is the same as the number of the groups of the pull rods; one end of each claw is respectively and rotatably connected with the other end of a group of pull rods, and the bending part of each claw is respectively and rotatably connected with the fixed cylinder;

the lower fixing disc is annular, one side of the lower fixing disc is connected with the other end of the fixing cylinder, and the hollow part of the lower fixing disc is connected with the hollow part of the fixing cylinder; at least two perforations are formed in the clamping jaw, the number of the perforations is equal to that of the clamping jaws, and the perforations are uniformly distributed on the same circumference; the other end of each claw penetrates through one through hole respectively;

the magnet is arranged at the end part of the second movable rod and positioned at the other side of the lower fixed disc, the second movable rod is arranged in the hollow part of the fixed cylinder and is movably arranged on a second cylinder, and the second cylinder is arranged on the fixed cylinder;

the calibration head is provided with the calibration cylinder which is arranged on the other side of the lower fixed disc, and one side of the guide groove faces the lower fixed disc; the other end of the claw stretches into the guide groove and stretches into the clamping groove through the guide groove.

7. The net release mechanism of claim 6, wherein the other end of the pawl extends out of the calibration cylinder through the slot.

8. The net release mechanism according to claim 6, wherein the movable ring is provided with a connecting hole, and the end part of the first movable rod is provided with a screw; the end part of the first movable rod passes through the connecting hole, and two nuts are connected to the first movable rod in a threaded manner; the two nuts are respectively arranged at two sides of the movable ring and respectively contact with the movable ring.

9. The net release mechanism according to any one of claims 6 to 8, wherein two tie rods are provided in each group, one end of each claw being provided between the other ends of the two tie rods in each group, respectively.

10. The net release mechanism according to claim 9, wherein the through hole is provided as a T-shaped through hole with a longitudinal portion thereof directed toward a center of the lower fixing plate; the other end of the pull rod extends into the transverse portion of the through hole, and the other end of the claw extends into the longitudinal portion of the through hole.