CN219027218U - Material taking pen - Google Patents

Abstract

The utility model relates to the technical field of production jigs, and particularly discloses a material taking pen which comprises a pen container, a pen core rod, an expansion piece and a driving mechanism, wherein the pen container is provided with a through hole; the pen core rod is at least partially positioned in the through hole and can move relative to the pen container; the driving mechanism is arranged at the top end of the pen container and is in transmission connection with the pen refill rod; the expansion piece is fixed on the pen container; the expansion piece includes the body of being connected with the refill pole to and set up in a plurality of expansion pieces of body along the circumferencial direction interval of body, a plurality of expansion pieces enclose and establish into the centre tank, the centre tank include keep away the position groove and with keep away the expansion groove of position groove intercommunication, expansion piece part is located the centre tank, and the external diameter of expansion piece is greater than the external diameter of expansion groove and is less than the external diameter of keeping away the position groove, accessible actuating mechanism drive expansion piece stretches out outward the pen container, and at this in-process, the expansion piece can be by keeping away the position groove and get into the expansion groove in order to make a plurality of expansion pieces open, and can carry out the centre gripping to the work piece, can not additionally occupy the hole depth of work piece hole, application scope is extensive.

Description

Material taking pen

Technical Field

The utility model relates to the technical field of production jigs, in particular to a material taking pen.

Background

In the 3C industry, workpieces need to be frequently taken and placed, and for small-sized perforated workpieces, tweezers are preferably used as auxiliary tools for clamping and carrying the workpieces. However, because the volume of the workpiece is small, the operation efficiency is low when the workpiece is clamped by forceps, and the labor load of workers is relatively high; in the clamping process, the workpiece is easy to fall off; meanwhile, the service life of the tweezers is shorter; particularly when the surface of the workpiece needs to be oiled, if the operation is still carried out by using tweezers, the oil quantity on the surface of the workpiece is easy to be adhered to the tweezers, and the oil quantity of the workpiece is inaccurate.

In this regard, in the prior art, as in the earlier patent with the application number CN202021067635.0, after a fixture is provided and stretched into a hole of a workpiece through an expansion structure, a driving rod is driven by a cylinder to stretch into the expansion structure and stretch out a part of the driving rod so that two expansion sheets of the expansion structure expand and clamp the workpiece, contact with the outer surface of the workpiece can be avoided, and the clamping of the workpiece is stable, but one end of the driving rod needs to stretch out a part of the expansion structure to expand the expansion structure, and the part of the driving rod stretching out of the expansion structure occupies a part of the hole depth of the workpiece, so that the fixture is not applicable when the hole depth of the workpiece is shallow.

Disclosure of Invention

The utility model aims at: a material taking pen is provided to adapt to workpieces with holes of various hole depths.

The utility model provides a material taking pen, which comprises:

the pen container is provided with a through hole;

the pen core rod is at least partially positioned in the through hole and can move relative to the pen container;

the driving mechanism is arranged at the top end of the pen container and is in transmission connection with the pen refill rod;

an expansion piece fixed on the pen container;

the expansion piece comprises a body connected with the pen refill rod, and a plurality of expansion pieces connected with the body, the expansion pieces are arranged at intervals along the circumferential direction of the body, the expansion pieces are surrounded to form a central groove, the central groove comprises a clearance groove and an expansion groove communicated with the clearance groove, the expansion piece is partially positioned in the central groove, the outer diameter of the expansion piece is larger than the outer diameter of the expansion groove and smaller than the outer diameter of the clearance groove, the expansion piece can move relative to the pen container to have an extending position and a retracting position, when the expansion piece is positioned at the extending position, the expansion piece extends out of the pen container, and the expansion piece is positioned at the expansion groove; when the expansion piece is positioned at the retraction position, the expansion piece is retracted into the pen container, and the expansion piece is positioned at the avoidance groove; the driving mechanism is used for driving the pen core rod and driving the expansion piece to move towards the extending position.

As a preferable technical scheme of the material taking pen, the material taking pen further comprises an elastic piece, wherein the elastic piece is configured to enable the pen core rod to always have a trend of driving the expansion piece to move towards the retraction position.

As a preferable technical scheme of the material taking pen, the driving mechanism comprises:

the pen refill comprises a pen container, a guide cylinder, a pen core rod part and a pen core cover, wherein the pen container is provided with a pen core rod part;

the pressure head is in sliding connection with the guide cylinder and is used for driving the pen core rod and driving the expansion piece to move towards the extending position.

As a preferable technical scheme of the material taking pen, the driving mechanism further comprises an indexing rotary drum arranged between the pressure head and the pen core rod, wherein a plurality of ratchet grooves and a plurality of through grooves are formed in the inner wall of the guide drum, the ratchet grooves and the through grooves are uniformly distributed along the circumferential direction of the guide drum, and one ratchet groove is arranged between any two adjacent through grooves;

the indexing rotary drum is provided with ratchets which are inserted into the ratchet grooves and are abutted against the side walls of the ratchet grooves when the expansion piece is positioned at the extending position, and inserted into the through grooves when the expansion piece is positioned at the retracting position;

the ram is capable of driving the indexing drum downward to disengage the ratchet from the through slot and guide the ratchet to move below the ratchet slot adjacent to the through slot in a set circumferential direction.

As the preferable technical scheme of the material taking pen, the pressure head is provided with a plurality of guide inclined planes which are arranged at intervals along the circumferential direction of the pressure head, the guide inclined planes are uniformly distributed along the circumferential direction of the pressure head, and when the expansion piece is positioned at the extending position and when the expansion piece is positioned at the retracting position, the middle parts of the guide inclined planes are abutted with the ratchet teeth.

As the preferable technical scheme of getting material pen, the pen container includes threaded connection's pen container head and pen container pole, the through-hole runs through in proper order the pen container head with the pen container pole, the pen container head is equipped with the jack, the expansion member peg graft in the jack.

As the preferable technical scheme of getting material pen, the outer peripheral face of pen container head is equipped with the annular groove, the pen container still includes the cover of cover locating the annular groove.

As the preferable technical scheme of the material taking pen, a guide surface is arranged between the avoidance groove and the expansion groove, and the guide surface is used for guiding the expansion piece to enter the expansion groove from the avoidance groove.

As the preferable technical scheme of getting material pen, the expansion piece is kept away from the protruding arch that is equipped with of one end of pen core bar, protruding pore wall butt that is used for with the hole of work piece.

As the preferable technical scheme of getting material pen, the bottom of pen container is equipped with the butt plane, the butt plane is used for with the upper surface butt of work piece.

The beneficial effects of the utility model are as follows:

the utility model provides a material taking pen, which is characterized in that an expansion piece is arranged in a pen container, a pen core rod is driven by a driving mechanism and drives the expansion piece to move towards an extending position, in the process that the expansion piece moves towards the extending position, the expansion piece enters into an expansion groove from a position avoiding groove of the expansion piece so as to enable a plurality of expansion pieces to be opened and clamp the hole wall of an inner hole of a workpiece.

Drawings

FIG. 1 is a cross-sectional view of a dispensing pen in accordance with an embodiment of the present utility model;

FIG. 2 is a second cross-sectional view of a pick-up pen in accordance with an embodiment of the present utility model;

FIG. 3 is an exploded view of a dispensing pen in an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a ram in a pick-up pen according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a guide cylinder in a pick-up pen according to an embodiment of the present utility model;

FIG. 6 is a schematic view of the indexing drum of the dispensing pen according to an embodiment of the present utility model;

FIG. 7 is an exploded view of the operation of the expansion member of the pen of the present utility model as it moves from a retracted position to an extended position;

fig. 8 is an exploded view of the action of the expansion member of the dispensing pen in an embodiment of the present utility model as it moves from an extended position to a retracted position.

In the figure:

1. a pen container; 11. a pen container head; 111. an annular groove; 112. abutting against the plane; 12. a pen container rod; 13. a pen container sleeve; 14. a through hole;

2. a pen core rod;

3. an expansion member;

4. an expansion member; 41. a body; 42. an expansion sheet; 421. a protrusion; 43. a central slot; 431. a clearance groove; 432. an expansion tank; 433. an opening; 434. a guide surface;

5. a driving mechanism; 51. a guide cylinder; 511. a chute; 512. a ratchet groove; 5121. a first guide slope; 513. a through groove; 514. a second guide slope; 52. a pressure head; 521. a slide block; 522. a guide slope; 53. an indexing drum; 531. a ratchet;

6. an elastic member;

10. a workpiece; 101. an inner hole.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present 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 relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

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 will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

After the clamp in the prior art stretches into a hole of a workpiece through the expansion structure, the driving rod is driven by the air cylinder to stretch into the expansion structure and stretch out a part of the expansion structure so that two expansion sheets of the expansion structure expand and clamp the workpiece, so that the clamp can avoid contact with the outer surface of the workpiece and is stable in clamping the workpiece, one end of the driving rod needs to stretch out a part of the expansion structure to expand the expansion structure, and the part of the driving rod stretching out of the expansion structure occupies a part of the hole depth of the workpiece, so that the clamp is not applicable when the hole depth of the workpiece is shallow.

In this regard, the present embodiment provides a pick-up pen to solve the above-mentioned problems. The material taking pen can be suitable for clamping a workpiece with an inner hole.

Specifically, as shown in fig. 1 to 8, the dispensing pen includes a barrel 1, a barrel stem 2, an expansion member 3, an expansion member 4, and a driving mechanism 5. Wherein the pen container 1 is provided with a through hole 14, and the pen core rod 2 is at least partially positioned in the through hole 14 and can move relative to the pen container 1. The driving mechanism 5 is arranged at the top end of the pen container 1 and is in transmission connection with the pen refill rod 2. The expansion element 4 includes a body 41 connected to the pen core shaft 2, and a plurality of expansion pieces 42 connected to the body 41, the plurality of expansion pieces 42 being disposed at intervals along the circumferential direction of the body 41, and the plurality of expansion pieces 42 being enclosed into a central groove 43, the central groove 43 including a clearance groove 431 and an expansion groove 432 communicating with the clearance groove 431. In this embodiment, a scheme in which the number of the expansion pieces 42 is two is exemplified, and in other embodiments, the number of the expansion pieces 42 may be set to three or more as needed. In this embodiment, an opening 433 communicating with the central slot 43 is formed between the two expansion pieces 42, the expansion piece 3 is fixed to the pen container 1, and the expansion piece 3 passes through the opening 433 and partially extends into the central slot 43, the outer diameter of the expansion piece 3 is larger than the outer diameter of the expansion slot 432 and smaller than the outer diameter of the avoidance slot 431, the pen core rod 2 can be driven by the driving mechanism 5 and the expansion piece 4 can be driven to move outwards of the pen container 1, so that the expansion piece 3 can be switched between the avoidance slot 431 and the expansion slot 432, specifically, the expansion piece 4 can move relative to the pen container 1 to have an extending position and a retracting position, when the expansion piece 4 is located at the extending position, the expansion piece 4 extends out of the pen container 1, and the expansion piece 3 is located at the expansion slot 432, at this time, the expansion pieces 42 are outwards opened, and the expansion piece 42 can be abutted with the inner wall of the inner hole 101 of the workpiece 10 so as to stably clamp the workpiece 10; when the expansion member 4 is located at the retracted position, the expansion member 4 is retracted into the barrel 1, and the expansion member 3 is located at the avoiding groove 431, and the expansion pieces 42 are relatively close together, wherein the driving mechanism 5 is used for driving the pen core 2 and driving the expansion member 4 to move towards the extended position.

According to the material taking pen provided by the embodiment, the expansion piece 3 is arranged in the pen container 1, the pen core rod 2 is driven by the driving mechanism 5 and the expansion piece 4 is driven to move to the extending position, in the process that the expansion piece 4 moves to the extending position, the expansion piece 3 enters the expansion groove 432 from the position avoiding groove 431 of the expansion piece 4 so that a plurality of expansion pieces 42 are opened, the hole wall of the inner hole 101 of the workpiece 10 is clamped, and compared with the prior art, the material taking pen does not additionally occupy the hole depth of the workpiece 10, and can effectively improve the application range of the material taking pen.

Alternatively, as shown in fig. 1 to 3, the brush holder 1 includes a brush holder head 11 and a brush holder pole 12 which are screw-coupled, and the through hole 14 penetrates the brush holder head 11 and the brush holder pole 12 in order, so that the brush holder 1 is easily disassembled by providing the brush holder head 11 and the brush holder pole 12 which are screw-coupled. Wherein, pen container head 11 is equipped with the jack that communicates with through-hole 14, and expansion member 4 is located pen container head 11, and expansion member 3 peg graft in the jack and be located in through-hole 14. Of course, in other embodiments, the pen container 1 may be integrally provided as needed.

Alternatively, as shown in fig. 1 to 3, the outer circumferential surface of the barrel head 11 is provided with an annular groove 111, and the barrel 1 further includes a barrel cover 13 sleeved on the annular groove 111. Through setting up pen container cover 13, the operator of being convenient for grips pen container 1, wherein, pen container cover 13 prefers the rubber material to make, has anti-skidding effect.

Alternatively, as shown in fig. 1 and 2, the bottom end of the barrel 1 is provided with an abutment plane 112, specifically, the abutment plane 112 is provided at the head of the barrel head 11, and the abutment plane 112 is used for abutting against the upper surface of the workpiece 10. Thus, when the workpiece 10 is clamped, the abutment surface 112 abuts against the workpiece 10 to fix the position of the workpiece 10, and then the workpiece 10 is clamped by the expansion member 4.

Optionally, as shown in fig. 1 and 2, a guiding surface 434 is provided between the escape groove 431 and the expansion groove 432, the guiding surface 434 being used for guiding the expansion element 3 from the escape groove 431 into the expansion groove 432. Thus, the occurrence of jamming can be avoided. In this embodiment, the guide surface 434 is exemplified as an arc surface, and in other embodiments, the guide surface 434 may be provided as an inclined surface. Preferably, the expansion piece 3 is cylindrical, and two axial ends of the expansion piece 3 are fixed on the pen container head 11, so that clamping stagnation can be further avoided.

Alternatively, as shown in fig. 1 and 2, the end of the expansion piece 42 away from the pen core rod 2 is provided with a protrusion 421, and the protrusion 421 is used to abut against the hole wall of the inner hole 101 of the workpiece 10. Preferably, the expansion piece 42 is made of a material having a certain elasticity, so that when the protrusion 421 abuts against the hole wall of the inner hole 101 of the workpiece 10, a certain degree of deformation occurs, which is convenient for the stability of clamping the workpiece 10.

Optionally, as shown in fig. 1 to 3, the reclaiming pen further comprises an elastic member 6, the elastic member 6 being configured such that the cartridge holder 2 always has a tendency to move the expansion member 4 towards the retracted position. The expansion member 4 can be automatically returned to the retracted position by providing the elastic member 6. In this embodiment, the elastic member 6 is exemplified as a pressure spring, the pressure spring is sleeved on the expansion member 4, the top end of the pressure spring is abutted with the pen core rod 2, and the bottom end of the pressure spring is abutted with the inner wall of the pen container head 11. In other embodiments, the elastic member 6 may be replaced with a tension spring or the like.

Alternatively, as shown in fig. 1 to 5, the driving mechanism 5 includes a guide cylinder 51 and a ram 52. Wherein, the guide cylinder 51 is arranged at the top end of the pen container 1, and the pen core rod 2 is partially positioned in the guide cylinder 51; the pressing head 52 is slidably connected with the guide cylinder 51, and is used for driving the pen core rod 2 and driving the expansion piece 4 to move towards the extending position. Thus, the operator can drive the pen core 2 and the expansion member 4 to move to the extended position by pressing the ram 52. In other embodiments, the driving mechanism 5 may be further configured as an air cylinder, and the material taking pen may be further disposed on a mechanical arm, and may be driven by the mechanical arm to automatically take and place the workpiece 10.

Specifically, in the present embodiment, the ram 52 is provided with a slider 521, the inner wall of the guide cylinder 51 is provided with a sliding groove 511, and the slider 521 is slidably located in the sliding groove 511, so as to achieve sliding connection between the ram 52 and the guide cylinder 51. Preferably, the number of the sliding grooves 511 and the sliding blocks 521 are plural and are arranged in a one-to-one correspondence, so that the relative sliding direction of the ram 52 and the guide cylinder 51 is ensured to be stable, wherein the scheme that the number of the sliding grooves 511 and the sliding blocks 521 is eight is exemplarily given in the present embodiment.

The pressing head 52 can directly abut against the pen core rod 2, when an operator needs to clamp the workpiece 10, the pressing head 52 is pressed by hand to drive the expansion piece 4 to move to the extending position, when the workpiece 10 does not need to be clamped, the pressing head 52 is only required to be loosened, and the expansion piece 4 can return to the retracting position under the driving of the elastic piece 6. However, when the workpiece 10 is required to be clamped, the operator needs to continuously press the ram 52, which is inconvenient.

In view of the above problems, as shown in fig. 1 to 6, in the present embodiment, the driving mechanism 5 further includes an indexing drum 53 disposed between the pressure head 52 and the pen core shaft 2, the inner wall of the guiding drum 51 is provided with a plurality of ratchet grooves 512 and a plurality of through grooves 513, the plurality of through grooves 513 and the plurality of ratchet grooves 512 are uniformly distributed along the circumferential direction of the guiding drum 51, one ratchet groove 512 is disposed between any two adjacent through grooves 513, and one through groove 513 is disposed between any two adjacent ratchet grooves 512. So arranged, on the inner wall of guide drum 51, a plurality of through grooves 513 and a plurality of ratchet grooves 512 are arranged in the circumferential direction of guide drum 51 in such a manner that through grooves 513-ratchet grooves 512- … … -through grooves 513-ratchet grooves 512, and the number of through grooves 513 and ratchet grooves 512 are equal. Specifically, in the present embodiment, a scheme in which the number of the ratchet grooves 512 and the through grooves 513 is four is exemplarily given, so that each ratchet groove 512 or the through groove 513 occupies one eighth of the index in the circumferential direction of the guide cylinder 51. Preferably, four of the sliding grooves 511 overlap with four of the through grooves 513 in a one-to-one correspondence, so that the structure of the guide drum 51 can be simplified.

The indexing drum 53 is provided with ratchet teeth 531, when the expansion member 4 is located at the extended position, the ratchet teeth 531 are inserted into the ratchet grooves 512 and are abutted against the side walls of the ratchet grooves 512, the side walls of the ratchet grooves 512 can limit the ratchet teeth 531 to move along the circumferential direction of the guide drum 51, and at this time, the pressure head 52 is abutted against the indexing drum 53 under the action of gravity; when the expansion member 4 is in the retracted position, the ratchet 531 is inserted into the through groove 513, and at this time, the side wall of the through groove 513 can limit the movement of the ratchet 531 along the circumferential direction of the guide drum 51, and under the action of the elastic member 6, the ratchet 531 abuts against the pressure head 52, and the pressure head 52 abuts against the transfer drum 53.

The ram 52 can drive the index drum 53 downward to disengage the ratchet 531 from the through groove 513 and guide the ratchet 531 to move below the ratchet groove 512 adjacent to the through groove 513 in the set circumferential direction. The circumferential direction is set to be the clockwise direction or the counterclockwise direction of the guide cylinder 51, and this embodiment is specifically the clockwise direction. When the expansion piece 4 is located at the retracted position, the index rotary drum 53 is driven to move downwards through the pressing pressure head 52 so that the pen core rod 2 drives the expansion piece 4 to move towards the extended position, meanwhile, the ratchet 531 on the index rotary drum 53 is gradually separated from the current index through groove 513, when the ratchet 531 is completely separated from the current index through groove 513, the position of the ratchet 531 in the circumferential direction of the guide drum 51 is not limited by the side wall of the through groove 513, under the action of the elastic piece 6 and in cooperation with the guide of the pressure head 52 on the ratchet 531, the ratchet 531 enters the ratchet groove 512 of the next index along the set circumferential direction, the locking of the position of the ratchet 531 is achieved, the locking of the position of the expansion piece 4 is achieved, and the fingers of an operator continuously pressing the pressure head 52 can be released, so that the labor load of the operator is reduced. Preferably, the index drum 53 is provided with a plurality of ratchet teeth 531, and the number of ratchet teeth 531, the number of through grooves 513 and the number of ratchet grooves 512 are all equal, and the plurality of ratchet teeth 531 may be located in the plurality of through grooves 513 in one-to-one correspondence, or the plurality of ratchet teeth 531 may be located in the plurality of ratchet grooves 512 in one-to-one correspondence, so that the position of the expansion member 4 can be stably locked when the expansion member 4 is located in the extended position. Among them, the present embodiment exemplarily gives a scheme in which the number of ratchet teeth 531 is four.

In this embodiment, the ram 52 is capable of driving the index drum 53 downward, and also of disengaging the ratchet 531 from the ratchet groove 512 and guiding the ratchet 531 to move below the through groove 513 adjacent to the ratchet groove 512 in the set circumferential direction. So set up, when the expansion piece 4 is located the extension position, drive the index rotary drum 53 through pressing the pressure head 52 and move downwards so that the pen core bar 2 drives the expansion piece 4 to move to the retracted position, ratchet 531 on the index rotary drum 53 breaks away from the ratchet groove 512 of the current index gradually, and when ratchet 531 breaks away from ratchet groove 512 of the current index completely, the lateral wall of ratchet groove 512 no longer limits the position of ratchet 531 in the circumference direction of guide cylinder 51, under the effect of elastic piece 6, and cooperate with the guide of pressure head 52 to ratchet 531, can make ratchet 531 get into next indexed through groove 513 along the setting circumference direction, so that expansion piece 4 moves to the retracted position.

In order to realize the guiding of the movement of the ratchet 531 by the pressing head 52 in the set circumferential direction, as shown in fig. 4, in this embodiment, the pressing head 52 has a plurality of guide inclined surfaces 522 arranged at intervals in the circumferential direction thereof, the plurality of guide inclined surfaces 522 being uniformly distributed in the circumferential direction of the pressing head 52, and the middle portions of the guide inclined surfaces 522 abut against the ratchet 531 both when the expansion member 4 is in the extended position and when the expansion member 4 is in the retracted position. Wherein, when the expansion member 4 is located at the extended position, the middle part of the guiding inclined plane 522 is abutted with the ratchet 531 under the self gravity of the pressure head 52, and when the expansion member 4 is located at the retracted position, the ratchet 531 is abutted against the guiding inclined plane 522 under the elastic force provided by the elastic member 6, and the pressure head 52 is abutted against the guiding cylinder 51.

Specifically, in the process that the expansion member 4 moves from the retracted position to the extended position, and when the ratchet teeth 531 on the index drum 53 are completely separated from the current index through grooves 513, the ratchet teeth 531 move along the guide inclined surface 522 and have an upward movement component and a set circumferential movement component under the action of the elastic member 6, thereby the ratchet teeth 531 can be introduced into the ratchet grooves 512 of the next index until the ratchet teeth 531 abut against the root portions of the ratchet grooves 512, so that the expansion member 4 is locked in the extended position; when the expansion member 4 is in the extended position, the pressing head 52 is pressed downward, and after the guide slope 522 pushes the ratchet 531 out of the ratchet groove 512, the ratchet 531 moves along the current guide slope 522 with an upward movement component and a set circumferential movement component by the driving of the elastic member 6, whereby the ratchet 531 can be introduced into the next indexed through groove 513 to lock the expansion member 4 in the retracted position. With the above arrangement, each time the ram 52 is pressed, the index drum 53 is moved by one index in the set circumferential direction, so that the expansion member 4 can reciprocate between the extended position and the retracted position.

In this embodiment, each time the index drum 53 moves one index, it will be separated from the current guide slope 522 and move to below the middle of the next guide slope 522 in the set circumferential direction. Specifically, the through groove 513 is directly connected to the next ratchet groove 512 in the set circumferential direction, and the ratchet groove 512 has a first guide slope 5121, and in the process of moving the expansion member 4 from the retracted position to the extended position, after the ratchet 531 enters the ratchet groove 512, the ratchet 531 can continue to move along the first guide slope 5121 under the action of the elastic member 6, and the ratchet 531 also has a component of upward movement, and a component of movement in the set circumferential direction until the ratchet 531 abuts against the root of the first guide slope 5121, and in the process, the ratchet 531 can move to below the middle of the next guide slope 522. A second guiding inclined plane 514 is arranged between the ratchet groove 512 and the next through groove 513 along the set circumferential direction, when the ratchet 531 is separated from the current ratchet groove 512 in the process of moving the expansion piece 4 from the extending position to the retracting position, the ratchet 531 moves to the lower part of the second guiding inclined plane 514 along the current guiding inclined plane 522 under the action of the elastic piece 6 and continues to move into the through groove 513 along the second guiding inclined plane 514, and in the process, the ratchet 531 is separated from the current guiding inclined plane 522 and moves to the lower part of the middle part of the next guiding inclined plane 522 along the set circumferential direction.

In this embodiment, the working principle of the material taking pen is as follows:

when the expansion member 4 moves from the retracted position to the extended position as shown in fig. 7 A1, the expansion member 4 is initially in the retracted position, the ratchet 531 is abutted against the guide slope 522 under the action of the elastic member 6, the pressure head 52 is abutted against the guide cylinder 51, the expansion member 3 is positioned in the escape groove 431, the groove wall of the escape groove 513 limits the ratchet 531 to move in the circumferential direction of the guide cylinder 51, the pressure head 52 is pressed downwards at this time, the pressure head 52 drives the ratchet 531 to move downwards through the guide slope 522, the indexing drum 53 drives the pen refill 2 and the expansion member 4 to move synchronously to the pen container 1, the expansion member 3 gradually enters the expansion groove 432 from the escape groove 431, the plurality of expansion pieces 42 gradually open, when the guide slope 522 drives the ratchet 531 to finally move to the state as shown in B1 in fig. 7, the ratchet 531 is separated from the current through groove 513, the through groove 513 no longer limits the position of the ratchet 531 in the circumferential direction of the guide cylinder 51, under the action of the elastic member 6, the pen refill 2 pushes the ratchet 531 upwards along the guide slope 522 to enable the ratchet 531 to move upwards along the guide slope 522, and the ratchet 531 has a component to move upwards along the guide slope as shown in the guide slope 1 and the set up direction as shown in the guide slope 512 or the state as shown in the guide slope 1, and the index slope 1 moves upwards along the set up direction as shown in the guide slope 512 and the index slope 512 is simultaneously, and the index slope 522 moves up to the opposite direction as shown in the index slope 1 is shown in the guide slope 1, and the index direction has the opposite direction and the axial direction is shown in the axial direction and the axial direction is 21; under the action of the elastic member 6, the pen core bar 2 continues to give upward pushing force to the index cylinder 53, the ratchet 531 continues to slide along the first guide slope 5121, and the ratchet 531 also has an upward movement component on the one hand and a movement component in the set circumferential direction on the other hand until the ratchet 531 moves to the state shown as D1 in fig. 7, and the ratchet 531 moves to the root of the ratchet groove 512 and abuts against the side wall of the ratchet groove 512, the ratchet 531 is kept stable in position, the expansion member 4 is locked in the extended position, and the expansion member 3 is positioned in the expansion groove 432. And the ratchet 531 moves an indexing distance in the set circumferential direction and is separated from the current guide slope 522 and moves below the middle of the next guide slope 522 when the ratchet 531 moves from the position A1 shown in fig. 7 to the position D1 shown in fig. 7.

When the expansion member 4 moves from the extended position to the retracted position as shown in fig. 8, initially, as shown by A2 in fig. 8, the expansion member 4 is positioned at the extended position, the expansion member 3 is positioned in the expansion groove 432, the plurality of expansion pieces 42 are expanded, the ratchet teeth 531 are abutted against the root portions of the first guide inclined surfaces 5121 by the elastic member 6, and the ratchet grooves 512 restrict the movement of the ratchet teeth 531 in the circumferential direction of the guide cylinder 51, and the pressing head 52 is abutted against the index drum 53 by its own weight. At this time, the pressure head 52 is pressed downwards, the pressure head 52 drives the ratchet 531 to move downwards through the guide inclined plane 522, and the index drum 53 drives the refill rod 2 and the expansion piece 4 to move continuously for a small distance to the outside of the pen container 1 synchronously until the state shown as B2 in fig. 8 is reached, at this time, the ratchet 531 is separated from the current ratchet groove 512, the ratchet groove 512 does not limit the position of the ratchet 531 in the circumferential direction of the guide drum 51 any more, under the action of the elastic piece 6, the refill rod 2 pushes the index drum 53 upwards, the ratchet 531 slides along the guide inclined plane 522, at this time, the ratchet 531 has an upward movement component on one hand, and has a movement component in the set circumferential direction (the or direction in fig. 8) on the other hand, until the state shown as C2 in fig. 8 is reached, at this time, the ratchet 531 abuts against the root of the current guide inclined plane 522, and at this time, the ratchet 531 is located below the second guide inclined plane 514; under the action of the elastic member 6, the pen core bar 2 continues to give upward thrust to the index cylinder 53, the ratchet 531 continues to slide along the second guide slope 514 and can push the ram 52 to move upward, at this time, the ratchet 531 also has an upward movement component on the one hand, and on the other hand, a movement component in the set circumferential direction, and when the ratchet 531 enters the next through groove 513 in the set circumferential direction, it is restricted by the side wall of the through groove 513, and movement in the set circumferential direction is impossible, only with upward movement, until the ratchet 531 moves to a state as shown by D2 in fig. 8, at which time the ratchet 531 pushes the ram 52 to abut against the guide cylinder 51, and the ratchet 531 moves by an indexed distance 522 in the set circumferential direction and moves to the lower side of the middle of the next guide slope 522 when the ratchet 531 moves from the position shown by A2 in fig. 8.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. 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. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A pick-up pen, comprising:

the pen container (1) is provided with a through hole (14);

a pen core rod (2) which is at least partially positioned in the through hole (14) and can move relative to the pen container (1);

the driving mechanism (5) is arranged at the top end of the pen container (1) and is in transmission connection with the pen refill rod (2);

an expansion piece (3) fixed to the pen container (1);

an expansion member (4) including a body (41) connected to the pen core rod (2), and a plurality of expansion pieces (42) connected to the body (41), the expansion pieces (42) being disposed at intervals along a circumferential direction of the body (41), and the expansion pieces (42) being surrounded to form a central groove (43), the central groove (43) including a clearance groove (431) and an expansion groove (432) communicating with the clearance groove (431), the expansion member (3) being partially located in the central groove (43), and an outer diameter of the expansion member (3) being larger than an outer diameter of the expansion groove (432) and smaller than an outer diameter of the clearance groove (431), the expansion member (4) being movable with respect to the pen container (1) to have an extended position and a retracted position, the expansion member (4) extending out of the pen container (1) when the expansion member (4) is located at the extended position, and the expansion member (3) being located at the expansion groove (432); when the expansion piece (4) is positioned at the retracted position, the expansion piece (4) is retracted into the pen container (1), and the expansion piece (3) is positioned at the avoidance groove (431); the driving mechanism (5) is used for driving the pen refill rod (2) and driving the expansion piece (4) to move towards the extending position.

2. A pick-up pen according to claim 1, characterized in that it further comprises an elastic element (6), said elastic element (6) being configured so that said pen-refill stem (2) always has a tendency to move said expansion element (4) towards said retracted position.

3. A pick-up pen according to claim 1, characterized in that the drive mechanism (5) comprises:

the guide cylinder (51) is arranged at the top end of the pen container (1), and the pen refill rod (2) is partially positioned in the guide cylinder (51);

the pressing head (52) is in sliding connection with the guide cylinder (51) and is used for driving the pen refill rod (2) and driving the expansion piece (4) to move towards the extending position.

4. A pick-up pen according to claim 3, characterized in that the driving mechanism (5) further comprises an indexing drum (53) arranged between the pressure head (52) and the pen core rod (2), the inner wall of the guide drum (51) is provided with a plurality of ratchet grooves (512) and a plurality of through grooves (513), the ratchet grooves (512) and the through grooves (513) are uniformly distributed along the circumferential direction of the guide drum (51), and one ratchet groove (512) is arranged between any two adjacent through grooves (513);

the indexing drum (53) is provided with ratchets (531), when the expansion piece (4) is located at the extending position, the ratchets (531) are inserted into the ratchet grooves (512) and are abutted with the side walls of the ratchet grooves (512), and when the expansion piece (4) is located at the retracting position, the ratchets (531) are inserted into the through grooves (513);

the ram (52) is capable of driving the index drum (53) downward to disengage the ratchet teeth (531) from the through grooves (513) and guide the ratchet teeth (531) to move below the ratchet grooves (512) adjacent to the through grooves (513) in a set circumferential direction.

5. The material taking pen as claimed in claim 4, wherein the ram (52) has a plurality of guide inclined surfaces (522) disposed at intervals along a circumferential direction thereof, the plurality of guide inclined surfaces (522) being uniformly distributed along the circumferential direction of the ram (52), and when the expansion member (4) is located at the extended position and when the expansion member (4) is located at the retracted position, a middle portion of the guide inclined surfaces (522) is abutted against the ratchet teeth (531).

6. The material taking pen as claimed in any one of claims 1 to 5, wherein the pen container (1) comprises a pen container head (11) and a pen container rod (12) which are connected through threads, the through hole (14) penetrates through the pen container head (11) and the pen container rod (12) in sequence, the pen container head (11) is provided with a jack, and the expansion piece (3) is inserted into the jack.

7. The material taking pen according to claim 6, wherein the outer circumferential surface of the pen container head (11) is provided with an annular groove (111), and the pen container (1) further comprises a pen container sleeve (13) sleeved on the annular groove (111).

8. A pick-up pen as claimed in any one of claims 1 to 5, characterised in that a guide surface (434) is provided between the clearance groove (431) and the expansion groove (432), the guide surface (434) being adapted to guide the expansion element (3) from the clearance groove (431) into the expansion groove (432).

9. The material taking pen as claimed in any one of claims 1 to 5, wherein a protrusion (421) is convexly arranged at one end of the expansion piece (42) far away from the pen core rod (2), and the protrusion (421) is used for abutting against a hole wall of the inner hole (101) of the workpiece (10).

10. The material taking pen according to any one of claims 1 to 5, wherein the bottom end of the pen container (1) is provided with an abutment plane (112), and the abutment plane (112) is used for abutting against the upper surface of the workpiece (10).

Images