CN216503481U

CN216503481U - Elastic pin

Info

Publication number: CN216503481U
Application number: CN202122685648.5U
Authority: CN
Inventors: 尤梅洲; 齐大海; 靳加加; 王磊
Original assignee: WUXI BANGY MACHINERY TECHNOLOGY CO LTD
Current assignee: WUXI BANGY MACHINERY TECHNOLOGY CO LTD
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-05-13
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses an elastic pin which is characterized in that a guide seat is arranged at the upper part of an installation block, a linear driving mechanism is arranged at the bottom of the installation block, a piston rod of the linear driving mechanism penetrates out of the installation block and extends into a guide hole of the guide seat, the end part of the piston rod is connected with a pull rod, a positioning sleeve is fixed in the guide hole, the pull rod is connected with an inner hole of the positioning sleeve, a pin body is arranged in the positioning sleeve, a spring is arranged in a counter bore at the bottom of the positioning pin, the bottom end of the spring is propped against an adjusting screw, and the adjusting screw is arranged in the positioning sleeve; the detection unit comprises a first channel, a second channel, a third channel and a pressure sensor, the first channel and the second channel are respectively arranged in the guide seats at two sides of the axis of the pin body, and the third channel is arranged in the radial direction of the positioning sleeve and the pin body; the first channel is communicated with an air source, and the second channel is connected with a pressure sensor; the controller is electrically connected with the linear driving mechanism and the pressure sensor. The utility model has the advantages of compact structure and simple operation principle.

Description

Elastic pin

Technical Field

The utility model belongs to the technical field of automation equipment, and particularly relates to an elastic pin.

Background

When the machining clamp is designed, an inner hole blank is often positioned, but a positioning hole needs to be machined, and the traditional elastic pin structure cannot stretch out and draw back to avoid the condition of a cutter. Chinese patent application, application number CN201310700454.5, application date 2013.12.18, grant bulletin number CN103707083A, grant bulletin date 2014.04.09, disclose an elastic pin positioning mechanism, including the installation piece, installation piece upper portion is fixed with the guide holder, and installation piece bottom is fixed with sharp actuating mechanism, sharp actuating mechanism's piston rod is worn out from the installation piece to stretch into in the guiding hole of guide holder, there is the pull rod at the end connection of piston rod, be fixed with the position sleeve in the guiding hole, the pull rod is through the circular round pin fixed connection who transversely sets up in the position sleeve hole, and the elastic pin sets up in the position sleeve to set up a spring in the counter bore of positioning pin bottom, the top of spring bottom is tightly on adjusting screw, adjusting screw locates in the position sleeve, corresponds to the upper portion position department of circular round pin soon. The product of the utility model has simple and reasonable structure, and the elastic pin can be pulled down by the linear driving mechanism to facilitate the avoidance of the cutter when the cutter needs to be avoided by adding the linear driving mechanism. The disadvantage is that the resilient pin may not be retracted due to malfunction or other reasons, and the resilient pin not retracted interferes with the tool, which may cause damage to the tool.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The utility model aims to provide an elastic pin, which is provided with a built-in detection mechanism, saves space, has a compact structure, is low in manufacturing cost, simple in operation principle and stable in operation, detects whether the elastic pin is retracted in place during the processing of a blank positioning hole, and improves the automation level of machining equipment.

2. Technical scheme

In order to achieve the purpose and achieve the technical effect, the utility model adopts the following technical scheme:

an elastic pin is characterized by comprising an installation block, a guide seat, a linear driving mechanism, a positioning sleeve, a pin body, a detection unit and a controller; the guide seat is arranged at the upper part of the installation block, the linear driving mechanism is arranged at the bottom of the installation block, a piston rod of the linear driving mechanism penetrates out of the installation block and extends into a guide hole of the guide seat, the end part of the piston rod is connected with a pull rod, a positioning sleeve is fixed in the guide hole, the pull rod is fixedly connected in an inner hole of the positioning sleeve through a transversely arranged round pin, a pin body is arranged in the positioning sleeve, a spring is arranged in a counter bore at the bottom of the pin body, the bottom end of the spring is tightly propped against an adjusting screw, and the adjusting screw is arranged in the positioning sleeve; the detection unit comprises a first channel, a second channel, a third channel and a pressure sensor, wherein the first channel and the second channel are respectively arranged in guide seats at two sides of the axis of the pin body, and the third channel is arranged in the radial direction of the positioning sleeve and the pin body; the first channel is communicated with an air source, and the second channel is connected with a pressure sensor; the controller is electrically connected with the linear driving mechanism and the pressure sensor.

In a specific embodiment of the present invention, the first channel includes a first air path disposed in the mounting block and a second air path disposed on the guide seat, the first air path is connected to the second air path, the first air path is connected to an air source, and the first air path is disposed in the mounting block to avoid contact between the air source and the blank.

In a specific embodiment of the present invention, the linear driving mechanism is a pneumatic cylinder or a hydraulic cylinder.

In a specific embodiment of the present invention, the guide holder is coupled to the mounting block by a first screw.

In a specific embodiment of the utility model, the tip of the pin body is tapered.

In a specific embodiment of the utility model, a cylindrical locking screw is arranged on the outer peripheral surface of the pin body, and the cylindrical end of the cylindrical locking screw abuts against the inner wall of the positioning sleeve.

The controller sends out a signal to enable a piston rod of the linear driving mechanism to extend out to drive the pin body to extend out and insert the pin body into the positioning hole to position the blank, the air source supplies air to the first channel, the positioning sleeve is tightly attached to the guide seat, the first channel is not communicated with the third channel, the air cannot reach the second channel from the first channel, and the pressure sensor feeds back a first signal; when the positioning hole of the blank needs to be machined, the controller sends a signal to enable the piston rod of the linear driving mechanism to retract so as to drive the pin body to be separated from the positioning hole of the blank, the third channel is communicated with the first channel and the second channel, the pressure sensor feeds back the second signal, the controller judges that the pin body is normally recovered, and if the controller indicates that the linear driving mechanism acts, the pressure sensor feeds back a signal which is not the second signal, the controller judges that the pin body is abnormally recovered; the controller signal of the utility model is communicated with the cutter control mechanism, so that the operation of the cutter can be controlled by utilizing the abnormity of the feedback signal of the detection unit, and the cutter damage is avoided.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that: the detection mechanism is internally arranged, the space is saved, the structure is compact, the manufacturing cost is low, the operation principle is simple, the operation is stable, the elastic pin extends into the positioning hole and is used for positioning a blank, the detection mechanism detects whether the elastic pin is retracted in place when the blank positioning hole needs to be machined, and the automation level of machining equipment is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic top view of the present invention.

FIG. 2 is a schematic cross-sectional view of the pin body of FIG. 1 taken along line A-A of the present invention.

FIG. 3 is a schematic cross-sectional view of the pin body of the present invention in an extended state.

Fig. 4 is a schematic structural view of the guide-less seat of the present invention.

In the figure: 1-mounting a block; 2-a guide seat; 3-a linear drive mechanism; 4-positioning sleeve; 5-a pin body; 6-a piston rod; 7-a pull rod; 8-round pins; 9-a spring; 10-adjusting screws; 11-a second channel; 12-a third channel; 13-a first gas path; 14-a second gas path; 15-a first screw; 16-cylindrical locking screw.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood in specific cases to those of ordinary skill in the art.

As shown in fig. 1 to 4, an elastic pin is characterized by comprising an installation block 1, a guide seat 2, a linear driving mechanism 3, a positioning sleeve 4, a pin body 5, a detection unit and a controller; the guide seat 2 is arranged at the upper part of the installation block 1, the linear driving mechanism 3 is arranged at the bottom of the installation block 1, a piston rod 6 of the linear driving mechanism 3 penetrates out of the installation block 1 and extends into a guide hole of the guide seat 2, the end part of the piston rod 6 is connected with a pull rod 7, a positioning sleeve 4 is fixed in the guide hole, the pull rod 7 is fixedly connected in an inner hole of the positioning sleeve 4 through a transversely arranged round pin 8, the pin body 5 is arranged in the positioning sleeve 4, a spring 9 is arranged in a counter bore at the bottom of the pin body 5, the bottom end of the spring 9 is tightly propped against an adjusting screw 10, and the adjusting screw 10 is arranged in the positioning sleeve 4; the detection unit comprises a first channel, a second channel 11, a third channel 12 and a pressure sensor, the first channel and the second channel 11 are respectively arranged in the guide seats 2 at two sides of the axis of the pin body 5, and the third channel 12 is arranged in the radial direction of the positioning sleeve 4 and the pin body 5; the first channel is communicated with an air source, and the second channel 11 is connected with a pressure sensor; the controller is electrically connected with the linear driving mechanism 3 and the pressure sensor.

The first channel comprises a first air path 13 arranged in the installation block 1 and a second air path 14 arranged on the guide seat 2, the first air path 13 is connected with the second air path 14, the first air path 13 is connected with an air source, and the first air path 13 is arranged in the installation block 1 to avoid the contact of the air source pipeline and a blank.

The linear driving mechanism 3 is a cylinder or a hydraulic cylinder.

The guide block 2 is connected to the mounting block 1 by first screws 15.

The top end of the pin body 5 is provided with a cone shape.

The outer peripheral surface of the pin body 5 is provided with a cylindrical locking screw 16, and the cylindrical end of the cylindrical locking screw 16 is abutted against the inner wall of the positioning sleeve 4.

The controller sends out a signal to enable the piston rod 6 of the linear driving mechanism 3 to extend out to drive the pin body 5 to extend out and insert into the positioning hole to position the blank, the air source supplies air to the first channel, the positioning sleeve 4 is tightly attached to the guide seat 2, the first channel is not communicated with the third channel 12, the air cannot reach the second channel 11 from the first channel, and the pressure sensor feeds back a first signal; when a positioning hole of a blank needs to be machined, a controller sends a signal to enable a piston rod 6 of a linear driving mechanism 3 to retract so as to drive a pin body 5 to be separated from the positioning hole of the blank, a third channel 12 is communicated with a first channel and a second channel 11, a pressure sensor feeds back a second signal, the controller judges that the retraction state of the pin body 5 is normal, and if the controller indicates that the linear driving mechanism 3 acts, the pressure sensor feeds back a signal which is not a second western signal, the controller judges that the retraction state of the pin body 5 is abnormal; the controller signal of the utility model is communicated with the cutter control mechanism, so that the operation of the cutter can be controlled by utilizing the abnormity of the feedback signal of the detection unit, and the cutter damage is avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An elastic pin, characterized in that: the device comprises an installation block, a guide seat, a linear driving mechanism, a positioning sleeve, a pin body, a detection unit and a controller; the guide seat is arranged at the upper part of the installation block, the linear driving mechanism is arranged at the bottom of the installation block, a piston rod of the linear driving mechanism penetrates out of the installation block and extends into a guide hole of the guide seat, the end part of the piston rod is connected with a pull rod, a positioning sleeve is fixed in the guide hole, the pull rod is fixedly connected in an inner hole of the positioning sleeve through a transversely arranged round pin, a pin body is arranged in the positioning sleeve, a spring is arranged in a counter bore at the bottom of the pin body, the bottom end of the spring is tightly propped against an adjusting screw, and the adjusting screw is arranged in the positioning sleeve; the detection unit comprises a first channel, a second channel, a third channel and a pressure sensor, wherein the first channel and the second channel are respectively arranged in guide seats at two sides of the axis of the pin body, and the third channel is arranged in the radial direction of the positioning sleeve and the pin body; the first channel is communicated with an air source, and the second channel is connected with a pressure sensor; the controller is electrically connected with the linear driving mechanism and the pressure sensor.

2. A spring pin according to claim 1, characterized in that: the first channel comprises a first air path arranged in the mounting block and a second air path arranged on the guide seat, the first air path is connected with the second air path, the first air path is connected with an air source, and the first air path is arranged in the mounting block to avoid the contact of the air source pipeline and the blank.

3. A spring pin according to claim 1, characterized in that: the linear driving mechanism is a cylinder or a hydraulic cylinder.

4. A spring pin according to claim 1, characterized in that: the guide seat is connected with the mounting block through a first screw.

5. A spring pin according to claim 1, characterized in that: the top end of the pin body is conical.

6. A spring pin according to claim 1, characterized in that: the outer peripheral surface of the pin body is provided with a cylindrical locking screw, and the cylindrical end of the cylindrical locking screw is abutted against the inner wall of the positioning sleeve.