Printing jig and printing method thereof

Abstract

The application discloses a printing jig and a printing method. The printing jig comprises a body and a working part connected with the body. The working part is inserted into the inside of a workpiece in a first direction and interacts with the inner surface of the workpiece in a second direction. A trigger hole open in the first direction and a working hole open in the second direction are arranged on the outer circumferential surface of the working part. The working part is hollow and is provided with a trigger part and a working part. The trigger part is slidingly arranged in the trigger hole and has a trigger position reached by the workpiece and a standby position in a free state. The working part is linked with the trigger part and has a working position corresponding to the trigger position and a release position corresponding to the standby position. The working part in the working position is inserted into the working hole and interacts with the inner surface of the workpiece in the second direction. The technical scheme disclosed by the application can adapt to workpieces with different sizes and shapes by switching the positions of the working part, thereby improving the adaptability of the printing jig and improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of production and manufacturing, and particularly relates to a printing jig and a printing method thereof. BACKGROUND

[0002] In industrial production, pipe fittings are common materials. The production and processing of pipe fittings often requires specific jigs. For example, a pipe fitting clamping mold is disclosed in Chinese patent document CN105587934A, which comprises a clamping mechanism and a side shaft clamp. The clamping mechanism is located in the middle of the side shaft clamp, and the clamping mechanism is a circular hole. The support ring is tightly attached to the upper side of the side shaft clamp. The side shaft clamp is provided with a rebound mechanism, which is a spring. The rebound mechanism is provided with a check slide block, which is cylindrical. The check slide block is provided with an anti-skid pad and a positioning pad in the clamping mechanism, which can make the positioning of the pipe fitting more firm.

[0003] The inventor found that in products with special requirements for the outer surface of the pipe fitting, the outer clamping jig will affect the outer surface of the workpiece or interfere with the operation. In the conventional idea, the fixed position is converted from the outside of the pipe fitting to the inside of the pipe fitting, but the jig acting from the inside has poor adaptability in the use process. For example, when the product has a small mouth and a large tail, the size of the jig can only be designed according to the small size of the mouth, and the inside is loose, which affects the production of the product. Especially in the printing operation, the workpiece will be subjected to the downward force of the screen plate, causing the product to sink, resulting in misplacement of the printed pattern or deformation of the pattern, which cannot be used. SUMMARY

[0004] In order to solve the above technical problems, the present application discloses a printing jig, which comprises a body and a working part connected with the body. The working part penetrates into the inside of the workpiece in a first direction and interacts with the inner surface of the workpiece in a second direction. A trigger hole open in the first direction and a working hole open in the second direction are formed on the outer circumferential surface of the working part. The working part is hollow and is provided with:

[0005] a trigger part slidingly installed in the trigger hole and having a trigger position reached by the workpiece and a standby position in a free state;

[0006] a working part linked with the trigger part and having a working position corresponding to the trigger position and a release position corresponding to the standby position. The working part in the working position penetrates out of the working hole and interacts with the inner surface of the workpiece in the second direction.

[0007] The following also provides several optional modes, but not as an additional limitation to the above general scheme, only as a further supplement or preference. Without technical or logical contradiction, each optional mode can be combined with the above general scheme, and can also be combined between multiple optional modes.

[0008] Optionally, the trigger has an outer diameter smaller than an inner diameter of the working part, one end of the trigger facing the workpiece is a trigger surface, and the other end of the trigger away from the workpiece is a trigger inclined surface; when the trigger enters the trigger position from the standby position, the trigger moves along the trigger inclined surface in the second direction.

[0009] Optionally, the working part further has a guide wedge arranged with the trigger inclined surface, one side of the guide wedge facing the trigger inclined surface is provided with a guide inclined surface, and the other side of the guide wedge away from the trigger inclined surface is fixedly connected with the working part.

[0010] Optionally, the other side of the guide wedge away from the trigger inclined surface is provided with a first pin hole, a side wall of the working part is provided with a second pin hole aligned with the first pin hole, and the guide wedge is fixed by a pin shaft penetrating through the first pin hole and the second pin hole.

[0011] Optionally, the working hole extends in the first direction into an elongated hole, and when the working part enters the release position from the working position, the working part moves in the first direction.

[0012] Optionally, the trigger is provided with a mounting hole facing the working hole, one end of the working part is inserted into the mounting hole, and the other end is used for cooperating with the inner surface of the workpiece.

[0013] Optionally, the working part is provided with a maintenance hole on the side away from the working hole, and the maintenance hole is in communication with the interior of the working part.

[0014] Optionally, the second direction is the direction of gravity, and in this direction, the working hole is located at the top end of the working part, and the maintenance hole is located at the bottom end of the working part.

[0015] Optionally, the end surface of the trigger in the trigger position facing the workpiece is flush with the end surface of the working part facing the workpiece.

[0016] The application also discloses a printing method for printing the outer surface of the workpiece with an internal cavity, comprising:

[0017] The workpiece is installed on the working part of the printing jig according to the above technical solutions in the first direction;

[0018] The workpiece and the printing jig are pressed in the first direction;

[0019] The workpiece surface is printed.

[0020] The technical scheme disclosed by the application can adapt to workpieces of different sizes and shapes by switching the positions of the workpieces, thereby improving the adaptability of the printing jig and improving production efficiency.

[0021] Specific beneficial technical effects will be further explained in the specific implementation mode in combination with specific structures or steps. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1a It is a schematic view of the printing jig in an embodiment;

[0023] Figure 1b It is a schematic view of the printing jig in an embodiment; Figure 1a

[0024] Figure 1c It is an enlarged schematic view of the internal structure of the work part of the printing jig in an embodiment; Figure 1b

[0025] Figure 2a It is a schematic view of the cooperation between the workpiece and the printing jig in an embodiment;

[0026] Figure 2b It is a schematic view of the cooperation between the workpiece and the printing jig when the workpiece is not installed in place;

[0027] Figure 2c It is a schematic view of the cooperation between the workpiece and the printing jig when the workpiece is installed in place.

[0028] The reference signs in the drawings are explained as follows:

[0029] 10, body;

[0030] 20, work part; 201, trigger hole; 202, work hole; 203, trigger piece; 2031, trigger surface; 2032, trigger inclined surface; 2033, mounting hole; 204, work piece; 205, guide wedge; 2051, guide inclined surface; 2052, first pin hole; 2053, second pin hole; 2054, pin shaft; 206, maintenance hole;

[0031] 30, workpiece;

[0032] 40, first direction; 41, second direction. DETAILED DESCRIPTION

[0033] The technical scheme in the embodiments of the application will be described clearly and completely in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0034] ​​It is to be understood that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components can be present. A component can be "positioned on" another component if it is either directly on the other component or if one or more intermediate components are present.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0036] Reference Figures 1a to 2c The present application discloses a printing jig, comprising a body 10 and a working part 20 connected to the body 10, the working part 20 is inserted into a workpiece 30 in a first direction 40 and interacts with the inner surface of the workpiece 30 in a second direction 41; a trigger hole 201 open in the first direction 40 and a working hole 202 open in the second direction 41 are formed on the outer circumferential surface of the working part 20; the working part 20 is hollow inside and is provided with:

[0037] a trigger piece 203, which is slidingly installed in the trigger hole 201 and has a trigger position (such as Figure 2c ) reached by the workpiece 30 and a standby position (such as Figure 2b ) in a free state;

[0038] a working piece 204, which is linked with the trigger piece 203 and has a working position (such as Figure 2c ) corresponding to the trigger position and a release position (such as Figure 2b ) corresponding to the standby position, the working piece 204 in the working position is inserted into the working hole 202 and interacts with the inner surface of the workpiece 30 in the second direction 41.

[0039] The trigger piece 203 is driven by the workpiece 30 to change its position, thereby realizing a response to whether the workpiece 30 is installed in place in a mechanical structure. The state of the printing jig is adjusted according to whether the workpiece 30 is installed or not. Specifically, the working piece 204 can realize different positions under the drive of the trigger piece 203, thereby changing the equivalent outer diameter of the working part 20, which can adapt to workpieces 30 of different sizes and shapes, improve the adaptability of the printing jig, and improve the production efficiency.

[0040] The trigger 203 mainly functions to realize the movement of the working part 204 in the second direction 41 during the movement of the trigger 203 itself. The actual action can be designed in various ways. For example, the trigger 203 rotates by itself and realizes the movement of the working part 204 in the second direction 41 through a transmission structure. For another example, the trigger 203 realizes the movement of the working part 204 in the second direction 41 through a connecting rod mechanism. In an embodiment, the outer diameter of the trigger 203 is smaller than the inner diameter of the working part 20. One end of the trigger 203 facing the workpiece 30 is a trigger surface 2031, and the other end of the trigger 203 away from the workpiece 30 is a trigger inclined surface 2032. When the trigger 203 moves from the standby position to the trigger position, the trigger 203 moves in the second direction 41 along the trigger inclined surface 2032.

[0041] The trigger inclined surface 2032 is used to realize the conversion of the movement of the trigger 203 in the first direction 40 to the movement in the second direction 41, and has the advantages of simple structure and high stability.

[0042] The trigger inclined surface 2032 can be matched with a fixed component inside the working part 20. In an embodiment, the working part 20 further has a guide wedge 205 matched with the trigger inclined surface 2032. One side of the guide wedge 205 facing the trigger inclined surface 2032 is provided with a guide inclined surface 2051, and the other side of the guide wedge 205 away from the trigger inclined surface 2032 is fixedly connected with the working part 20.

[0043] The guide inclined surface 2051 and the trigger inclined surface 2032 are matched with each other to improve the stability of the device in operation, avoid the rapid wear of a certain part due to the mutual movement of components, and improve the service life of the device.

[0044] In an embodiment, the other side of the guide wedge 205 away from the trigger inclined surface 2032 is provided with a first pin hole 2052, the sidewall of the working part 20 is provided with a second pin hole 2053 aligned with the first pin hole 2052, and the guide wedge 205 is fixed through a pin shaft 2054 penetrating the first pin hole 2052 and the second pin hole 2053.

[0045] Reference is made to the accompanying drawings Figure 1cTwo second pin holes 2053 are provided on the working part 20, one of which is a through hole penetrating the sidewall of the working part 20, and the other is a blind hole provided on the sidewall of the working part 20 and open to the inside of the working part 20. This arrangement can facilitate the installation of the pin shaft 2054, provide limiting, and improve the assembly effect. As can be seen from the drawings, the length of the pin shaft 2054 should be slightly less than the maximum accommodation length of the two second pin holes 2053. Thus, the pin shaft 2054 is retracted by a small distance compared to the end face of the second pin hole 2053. This avoids affecting the inner surface of the workpiece 30. During use, the second pin hole 2053 at the upper end in the direction of gravity is a through hole, and the second pin hole 2053 at the lower end in the direction of gravity is a blind hole, which can improve the stability of the installation of the pin shaft 2054.

[0046] As can be seen from the foregoing description, the movement of the trigger member 203 is actually a composite motion, which can be decomposed into sub-motions in the first direction 40 and the second direction 41, and thus the working member 204 can also have sub-motions in two directions. In some embodiments, the movement of the working member 204 in the first direction 40 can be eliminated by the arrangement of the transmission mechanism, but correspondingly, the mechanism of the transmission mechanism will be complicated, which is not conducive to the long-term stable movement of the device. In an embodiment, the working hole 202 is elongated in the first direction 40, and the working member 204 moves in the first direction 40 when it moves from the working position to the release position.

[0047] In this embodiment, the working member 204 moves in the first direction 40 by being arranged as an elongated hole in the working hole 202. More importantly, the movement of the working member 204 in the first direction 40 can also exert an action force on the workpiece 30 towards the working part 20, thereby realizing the close fit of the workpiece 30 and the printing jig in the first direction 40 and improving the positioning effect.

[0048] As can be seen from the foregoing, the working member 204 not only bears the action force in the second direction 41 during actual work, but also can bear the action force in the first direction 40, so the mounting component of the working member 204 needs to be able to bear the stress in two directions. In an embodiment, a mounting hole 2033 is provided on the trigger member 203 towards the working hole 202, one end of the working member 204 is inserted into the mounting hole 2033, and the other end is used to cooperate with the inner surface of the workpiece 30.

[0049] The mounting hole 2033 extends in the second direction 41, and when there is an included angle between the second direction 41 and the first direction 40, the mounting hole 2033 can provide the working member 204 with the stress in two directions. In actual products, the first direction 40 and the second direction 41 are arranged perpendicularly.

[0050] In an embodiment, the working part 20 is provided with a maintenance hole 206 on the side opposite to the working hole 202, and the maintenance hole 206 is in communication with the interior of the working part 20.

[0051] The maintenance hole 206 can facilitate the operator to observe the working condition of the internal components of the working part 20, and meanwhile, the maintenance hole 206 can also play a role in heat dissipation, chip removal and the like during the working process, thereby improving the stability of the device in long-term working.

[0052] In an actual product, in an embodiment, the second direction 41 is the direction of gravity, and in this direction, the working hole 202 is located at the top end of the working part 20, and the maintenance hole 206 is located at the bottom end of the working part 20.

[0053] In this embodiment, the gravity is the force for resetting the trigger piece 203, and in other embodiments, an elastic piece can be provided for the trigger piece 203 or the working piece 204 to provide a resetting element.

[0054] With reference to the accompanying drawings Figure 2b and Figure 2c , the present application also discloses a printing method for printing the outer surface of the internally hollow workpiece 30, which comprises the following steps:

[0055] mounting the workpiece 30 on the working part 20 of the printing jig according to the above technical solutions in the first direction 40;

[0056] pressing the workpiece 30 and the printing jig in the first direction 40;

[0057] printing on the surface of the workpiece 30.

[0058] In the process of mounting the workpiece 30 on the printing jig, the workpiece 30 interacts with the trigger piece 203 to change the position of the working piece 204, thereby changing the equivalent outer diameter of the working part 20, so as to realize the clamping of the workpiece 30 and facilitate the printing operation. In the drawings, the workpiece 30 is shown as being provided with a consistent outer opening and inner diameter, and in actual production, the workpiece 30 can be provided with an inconsistent outer opening and inner diameter, especially the size of the outer opening is smaller than the inner diameter. At this time, the conventional clamp cannot meet the clamping requirements of the workpiece 30.

[0059] In this embodiment, the above problem is overcome through the interaction between the workpiece 30 and the trigger piece 203, but during the movement of the workpiece 30 in the first direction 40, the trigger piece 203 or the workpiece 30 can be damaged due to excessive force. In order to avoid this problem, in an embodiment, the end surface of the trigger piece 203 located at the trigger position and facing the workpiece 30 is flush with the end surface of the working part 20 facing the workpiece 30. That is, at this position, the trigger surface 2031 is flush with the end surface of the working part 20 facing the workpiece 30. In a specific product, the end surface of the working part 20 can slightly protrude from the extreme position of the trigger piece 203.

[0060] The workpiece 30 dismounting process is the same as the mounting process, and the reverse operation can be performed, which will not be described here.

[0061] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure. When the technical features in different embodiments are embodied in the same figure, it can be considered that the figure also discloses the combination of each embodiment involved.

[0062] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A printing jig, characterized by, The printing jig comprises a body and a working part connected to the body, the working part is inserted into the interior of a workpiece in a first direction and interacts with the inner surface of the workpiece in a second direction; a trigger hole open in the first direction and a working hole open in the second direction are formed on the outer circumferential surface of the working part, the working hole extends as a long hole in the first direction; the working part is hollow inside and is provided with: a trigger part slidingly installed in the trigger hole and having a trigger position reached by the workpiece and a standby position in a free state, the trigger part resets to the standby position under the action of gravity; a working part linked with the trigger part and having a working position corresponding to the trigger position and a release position corresponding to the standby position, the working part inserted out of the working hole and interacting with the inner surface of the workpiece in the second direction when in the working position, the working part moving in the first direction and achieving the close contact of the workpiece and the printing jig in the first direction when the working part enters the working position from the release position, the trigger part being provided with a mounting hole facing the working hole, one end of the working part being inserted into the mounting hole and the other end being used for cooperating with the inner surface of the workpiece; the workpiece interacts with the trigger part during the installation into the printing jig to change the position of the working part and the equivalent outer diameter of the working part, the end surface of the trigger part facing the workpiece being flush with the end surface of the working part facing the workpiece or the end surface of the working part slightly protruding from the extreme position of the trigger part when the trigger part is in the trigger position.

2. The printing jig according to claim 1, wherein The outer diameter of the trigger part is smaller than the inner diameter of the working part, one end of the trigger part facing the workpiece is a trigger surface, and the other end of the trigger part away from the workpiece is a trigger inclined surface; the trigger part moves in the second direction along the trigger inclined surface when the trigger part enters the trigger position from the standby position.

3. The printing jig according to claim 2, wherein The working part further comprises a guide wedge provided with the trigger inclined surface, one side of the guide wedge facing the trigger inclined surface is provided with a guide inclined surface, and the other side of the guide wedge away from the trigger inclined surface is fixedly connected with the working part.

4. The printing jig according to claim 3, wherein The other side of the guide wedge away from the trigger inclined surface is provided with a first pin hole, a second pin hole opposite to the first pin hole is formed on the side wall of the working part, and the guide wedge is fixed by a pin shaft penetrating through the first pin hole and the second pin hole.

5. The printing jig according to claim 1, wherein The side of the working part away from the working hole is provided with a maintenance hole, and the maintenance hole is in communication with the interior of the working part.

6. The printing jig according to claim 5, wherein The second direction is the direction of gravity, and in this direction, the working hole is located at the top end of the working part, and the maintenance hole is located at the bottom end of the working part.

7. A printing method for printing an outer surface of an internally hollow workpiece, characterized by, The method comprises: installing a workpiece in a first direction on the working part of the printing jig according to any one of claims 1 to 6; pressing the workpiece and the printing jig in the first direction; printing on the surface of the workpiece.

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