CN220278070U - Adjustable sliding block mechanism and die - Google Patents

Adjustable sliding block mechanism and die Download PDF

Info

Publication number
CN220278070U
CN220278070U CN202322001772.4U CN202322001772U CN220278070U CN 220278070 U CN220278070 U CN 220278070U CN 202322001772 U CN202322001772 U CN 202322001772U CN 220278070 U CN220278070 U CN 220278070U
Authority
CN
China
Prior art keywords
block
forming
driving
workpiece
forming block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202322001772.4U
Other languages
Chinese (zh)
Inventor
郑琦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Shengwode Machinery Co ltd
Original Assignee
Ningbo Shengwode Machinery Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Shengwode Machinery Co ltd filed Critical Ningbo Shengwode Machinery Co ltd
Priority to CN202322001772.4U priority Critical patent/CN220278070U/en
Application granted granted Critical
Publication of CN220278070U publication Critical patent/CN220278070U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The utility model belongs to the field of dies, and provides an adjustable sliding block mechanism and a die, wherein the adjustable sliding block mechanism comprises: a driving block movably arranged; the first forming block and the second forming block are movably clamped on the top wall and the bottom wall of the vertical direction of the driving block respectively, the first forming block and the second forming block can shrink or keep away from each other relative to the driving block, the first forming block and the second forming block are used for forming a processing groove on the inner hole wall of a workpiece when keeping away from each other, and the first forming block and the second forming block are used for being separated from the formed workpiece when shrinking in the opposite directions. Compared with the prior art, the utility model has the advantages that the first forming block and the second forming block are far away in opposite directions when the movable block is close to the driving block, so that the forming of the processing groove on the inner hole wall of the workpiece is ensured, and the first forming block and the second forming block can be contracted in opposite directions in the process that the movable block is far away from the driving block, thereby being convenient for separating from the workpiece, improving the qualification rate of the workpiece and simultaneously ensuring the quality of the workpiece.

Description

Adjustable sliding block mechanism and die
Technical Field
The utility model belongs to the field of dies, and particularly relates to an adjustable sliding block mechanism and a die.
Background
With the rapid development of technology, products are gradually diversified, and in order to process different products, it is important to design corresponding structures so as to facilitate the molding and demolding of the products.
At present, for products with inner holes, when a plurality of processing grooves exist on the inner hole wall of the products, workers often process and shape the inner holes on the workpiece in advance, the processing grooves on the inner hole wall of the workpiece are processed after finishing, and for the processing of a die, demolding is often difficult to be carried out after molding, so that the damage on the workpiece is caused after forced demolding, the qualification rate of the workpiece is reduced, and meanwhile, the quality of the workpiece is also influenced.
Disclosure of Invention
Aiming at the defects existing in the prior art, the technical problems to be solved by the utility model are as follows: the utility model provides a utilize movable block to be close to and drive the mode that the driving block removed for first shaping piece is kept away from in opposite directions with the second shaping piece, and then guarantees the shaping of processing groove on the work piece inner hole wall, and at the in-process that the driving block was kept away from to the movable block, can utilize the driving block to make first shaping piece and second shaping piece shrink in opposite directions again, and then be convenient for break away from outside the work piece, when promoting the work piece qualification rate, also guarantee adjustable slider mechanism and the mould of work piece quality.
The technical scheme adopted for solving the technical problems is that the utility model provides an adjustable sliding block mechanism, which comprises: a driving block movably arranged;
the first forming block and the second forming block are movably clamped on the top wall and the bottom wall of the driving block in the vertical direction respectively, the first forming block and the second forming block can contract or keep away from each other relative to the driving block, the first forming block and the second forming block are used for forming a processing groove on the inner hole wall of a workpiece when keeping away from each other, and the first forming block and the second forming block are used for separating from the formed workpiece when contracting away from each other;
the movable block is movably arranged above the driving block and is used for driving the driving block to move so that the first forming block and the second forming block shrink or are far away from each other;
when the movable block is close to the driving block, the driving block is used for driving the first forming block and the second forming block to be far away from each other;
when the movable block is far away from the driving block, the driving block is used for driving the first molding block and the second molding block to shrink in opposite directions.
In the above-mentioned adjustable slide mechanism, the driving block includes:
the movable seat is provided with an inclined guide hole, and the movable block is movably inserted into the inclined guide hole;
the adjusting block is connected to the movable seat, is located between the first forming block and the second forming block, and is movably clamped with the second forming block.
In the above-mentioned adjustable slider mechanism, the roof of regulating block is provided with the block with the diapire all slope, first shaping piece with all slope is provided with the block groove on the second shaping piece, the block movable joint is in the block groove.
In the above-mentioned adjustable slide mechanism, further comprising:
the device comprises a mounting seat and a driving piece, wherein the output end of the driving piece is connected with the mounting seat, and the movable seat is movably arranged in the mounting seat;
the third shaping block is connected to one side, far away from the driving piece, of the mounting seat, the first shaping block, the second shaping block and the adjusting block are movably arranged in the third shaping block, and the third shaping block is used for shaping an inner hole on a workpiece.
In the above-mentioned adjustable slider mechanism, the third shaping piece is provided with the spacing groove along vertical direction, first shaping piece second shaping piece and the regulating block is all movable to be set up in the spacing groove.
In the above-mentioned adjustable slider mechanism, still be provided with the fixed block on the lateral wall of mount pad, be provided with the mounting hole in the fixed block, the inner wall of mounting hole with be formed with spacing appearance chamber between the third shaping piece, spacing appearance chamber is used for limiting first shaping piece with the distance that the second shaping piece removed.
In the above-mentioned adjustable slider mechanism, a guide groove is provided in the mounting seat, and the movable seat is movably clamped in the guide groove.
The technical scheme adopted for solving the technical problems is that the utility model also provides a die which comprises the adjustable sliding block mechanism.
Compared with the prior art, the utility model has the following beneficial effects:
(1) According to the adjustable sliding block mechanism and the die, the movable block is arranged, and the movable block is used for approaching and driving the driving block to move, so that the driving block is used for keeping the first forming block away from the second forming block in the moving process, namely the first forming block and the second forming block can be used for forming a processing groove on the inner hole wall of a workpiece at the moment, after the workpiece is formed, the movable block drives the driving block to move in the process of keeping away from the driving block, so that the driving block drives the first forming block and the second forming block to shrink in the moving process, the two forming blocks are separated from the formed workpiece, the smoothness of the workpiece in the taking-out process is guaranteed, and the workpiece is prevented from being damaged to influence the qualification rate.
(2) The block movable clamping grooves arranged on the top wall and the bottom wall of the adjusting block are clamped in the block grooves on the first molding block and the second molding block, and the block grooves are all obliquely arranged, so that the moving seat drives the adjusting block to move in the process of utilizing the matching between the obliquely arranged block grooves and the block grooves, the first molding block and the second molding block are favorably enabled to be far away from or shrink in opposite directions, and the stability of the sliding block mechanism is ensured.
(3) The side wall of the mounting seat is provided with the fixed block, and the limiting containing cavity formed between the fixed block and the third molding block is used for limiting the maximum distance that the first molding block and the second molding block can move when being away from each other, so that the whole working efficiency of the sliding block mechanism is prevented from being influenced due to overlarge moving stroke.
Drawings
FIG. 1 is a structural view of an adjustable slide mechanism on a movable mold assembly;
FIG. 2 is a structural view between the movable block and the stationary mold assembly;
FIG. 3 is a full cross-sectional view of the slide mechanism after the stationary mold assembly and the movable mold assembly are clamped;
FIG. 4 is a view of the mounting structure between the first molding block, the second molding block, the third molding block, and the fixed block;
fig. 5 is a view of the mounting structure among the adjustment block, the first molding block, the second molding block, and the third molding block.
In the figure, 1, a driving block; 2. a first molding block; 3. a second molding block; 4. a movable block; 5. a movable seat; 6. oblique guide holes; 7. an adjusting block; 8. a clamping block; 9. a clamping groove; 10. a mounting base; 11. a driving member; 12. a third molding block; 13. a guide groove; 14. a limit groove; 15. a fixed block; 16. a mounting hole; 17. and limiting the cavity.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 1 to 3, an adjustable slide block mechanism in the present solution is mainly applied in a mold, wherein the movable block 4 is an inclined guide post on a fixed mold assembly, and the slide block mechanism is used for facilitating forming of a processing groove on an inner hole wall of a workpiece, and facilitating demolding after the workpiece is formed, so as to ensure that the quality of the workpiece is not affected.
As shown in fig. 1 to 5, an adjustable slide mechanism of the present utility model includes: a driving block 1 movably arranged; the first forming block 2 and the second forming block 3 are movably clamped on the top wall and the bottom wall of the driving block 1 in the vertical direction respectively, the first forming block 2 and the second forming block 3 can be contracted or separated relative to the driving block 1 in the opposite direction, the first forming block 2 and the second forming block 3 are used for forming a processing groove on the inner hole wall of a workpiece when being separated in the opposite direction, and the first forming block 2 and the second forming block 3 are used for being separated out of the formed workpiece when being contracted in the opposite direction; the movable block 4 is movably arranged above the driving block 1, and the movable block 4 is used for driving the driving block 1 to move so that the first forming block 2 and the second forming block 3 shrink or are far away from each other; when the movable block 4 is close to the driving block 1, the driving block 1 is used for driving the first forming block 2 and the second forming block 3 to be far away from each other; when the movable block 4 is far away from the driving block 1, the driving block 1 is used for driving the first forming block 2 and the second forming block 3 to shrink in opposite directions.
Specifically, the movable block 4 in the scheme is the inclined guide post arranged on the fixed die assembly, so that in the process of die assembly and movable die assembly, the movable block 4 is inserted into the driving block 1 and drives the driving block 1 to move, and then the driving block 1 is utilized to simultaneously push the first forming block 2 and the second forming block 3 to be away from each other, and finally, a processing groove (not shown in the figure) on the inner hole wall of a workpiece is formed through the first forming block 2 and the second forming block 3, so that the condition that the workpiece needs secondary processing is avoided, after the workpiece is formed, the fixed die assembly drives the movable block 4 to be away from the movable die assembly, at the moment, the movable block 4 can pull the first forming block 2 and the second forming block 3 to shrink in opposite directions in the moving process of the movable block 4, the process is mainly used for separating the first forming block 2 and the second forming block 3 from the formed workpiece, the phenomenon of damage in the workpiece die stripping process is avoided, the quality of the workpiece is not influenced, and the qualification rate of the workpiece is also improved.
The driving block 1 includes: the movable seat 5 is provided with an inclined guide hole 6, and the movable block 4 is movably inserted into the inclined guide hole 6; the adjusting block 7 is connected to the movable seat 5, the adjusting block 7 is located between the first forming block 2 and the second forming block 3, and the first forming block 2 and the second forming block 3 are movably clamped with the adjusting block 7.
Further, as shown in fig. 3 to 4, in the process of closing the fixed mold assembly and the movable mold assembly, the movable block 4 is inserted into the inclined guide hole 6, and since the adjusting block 7 is connected to the movable seat 5, the adjusting block 7 and the movable seat 5 synchronously move leftwards in fig. 4, and further since the first forming block 2 and the second forming block 3 are movably clamped on the adjusting block 7, when the adjusting block 7 moves leftwards in fig. 3, the first forming block 2 and the second forming block 3 extend into a product cavity formed between the fixed mold assembly and the movable mold assembly in the opposite and distant process, namely, at the moment, the two forming blocks can be used for forming a processing groove on the inner hole wall of a workpiece, so that the shape of the product required by one-time pouring of the mold can be formed is ensured, and the influence on the integral quality of the workpiece due to the subsequent processing of the workpiece is avoided.
The roof and the diapire of regulating block 7 all slope are provided with block 8, and the last slope of first shaping piece 2 and second shaping piece 3 is provided with block groove 9, and block 8 activity joint is in block groove 9.
As shown in fig. 5, the clamping blocks 8 and the clamping grooves 9 are all obliquely arranged, the positions shown in fig. 5 are a state diagram of the adjusting block 7, the first molding block 2 and the second molding block 3 after the fixed mold assembly and the movable mold assembly are assembled, at this time, the first molding block 2 and the second molding block 3 extend into a product cavity, after the mold is poured, a processing groove on the inner hole wall of a workpiece can be formed, after the workpiece is formed, the fixed mold assembly drives the movable block 4 to be away from the movable mold assembly, the movable block 4 is utilized to drive the movable seat 5 to move, the adjusting block 7 moves rightward along fig. 5, and the clamping blocks 8 are movably clamped in the clamping grooves 9, and are obliquely arranged, so that the clamping blocks 8 can be utilized to synchronously pull the first molding block 2 and the second molding block 3 to shrink in opposite directions in the moving process of the adjusting block 7, namely, the first molding block 2 and the second molding block 3 are separated from the workpiece after the first molding block 3 are mutually close to each other along the position shown in fig. 3, the processing groove on the inner hole wall of the workpiece is formed once, and after the workpiece is formed is ensured, the two molding blocks are separated from the workpiece and the workpiece is smoothly separated from the workpiece and the workpiece is prevented from being damaged in the final demolding process.
The scheme also comprises the following steps: the movable seat 5 is movably arranged in the mounting seat 10; the third shaping block 12 is connected to one side of the mounting seat 10 far away from the driving piece 11, the first shaping block 2, the second shaping block 3 and the adjusting block 7 are movably arranged in the third shaping block 12, and the third shaping block 12 is used for shaping an inner hole on a workpiece.
Besides the fact that the first forming block 2 and the second forming block 3 are utilized to form a groove on the inner wall of a workpiece, the third forming block 12 is utilized to form an inner hole on the workpiece, in order to ensure that three forming blocks can smoothly move out of the inner hole on the workpiece after the workpiece is formed, the method adopts a step-by-step workpiece separating mode, specifically, when the workpiece is cast and formed in the inner position shown in fig. 3, the fixed die assembly drives the movable block 4 to be far away from the movable die assembly, the movable block 4 drives the movable seat 5 through pushing, so that the regulating block 7 connected with the movable seat 5 moves rightwards along the fig. 3, the clamping block 8 is movably clamped in the clamping groove 9, the regulating block 7 enables the first forming block 2 and the second forming block 3 to shrink in the right direction in the moving process, namely, the end part on the left side of the first forming block 2 and the second forming block 3 in the vertical direction in fig. 3 is separated from the inner hole of the workpiece, at the moment, the first forming block 2 and the second forming block 3 are required to be described, and the inner hole of the workpiece is not completely separated from the workpiece, namely, the second forming block 4 is not completely separated from the workpiece 11 and is not required to be completely separated from the workpiece 3, namely, the second forming block 10 is required to be completely separated from the inner hole of the workpiece 3 and the workpiece is required to be completely separated from the workpiece through the second forming block 3, and the second forming block 3 is required to be completely separated from the inner hole through the second forming block 3 and the second forming block 3 to be completely and the workpiece through the second forming block 3 and the second forming block 3 to be completely separated from the inner hole through the inner hole.
Preferably, in the process of forming the workpiece, the driving member 11 can be utilized to stretch the third forming block 12 into the product cavity on the movable mold assembly in advance, and finally, the movable block 4 is utilized to insert the inclined guide hole 6 in the process of closing the fixed mold assembly and the movable mold assembly, so that the first forming block 2 and the second forming block 3 finally stretch into the processing groove of the formed workpiece on the inner hole wall, and the specific principle is the same as that of the workpiece demolding process, and is not repeated here.
The installation seat 10 is internally provided with a guide groove 13, and the movable seat 5 is movably clamped in the guide groove 13.
The design of the guide groove 13 limits the moving direction and distance of the moving seat 5 in the mounting seat 10, and simultaneously is beneficial to accurately driving the adjusting block 7 to move left and right along the horizontal direction of the figure 3 in the moving process of the moving seat 5 along the direction of the guide groove 13, so that the first forming block 2 and the second forming block 3 can smoothly realize the functions of opposite shrinkage or separation.
The third molding block 12 is provided with a limiting groove 14 along the vertical direction, and the first molding block 2, the second molding block 3 and the adjusting block 7 are movably arranged in the limiting groove 14.
Further, the limiting groove 14 is formed in the third forming block 12 along the vertical direction, namely, in the process that the adjusting block 7 moves left and right along fig. 3, the left end of the first forming block 2 and the left end of the second forming block 3 can only move along the vertical direction of fig. 3, so that stability in the moving process of the first forming block 2 and the second forming block 3 in the mold opening and closing process is ensured, and quality of a workpiece is not influenced.
The side wall of the mounting seat 10 is also provided with a fixed block 15, a mounting hole 16 is arranged in the fixed block 15, a limiting cavity 17 is formed between the inner wall of the mounting hole 16 and the third molding block 12, and the limiting cavity 17 is used for limiting the moving distance of the first molding block 2 and the second molding block 3.
In order to further improve stability in the moving process of the first molding block 2 and the second molding block 3, the fixing block 15 is arranged on the mounting seat 10, wherein the mounting hole 16 on the fixing block 15 is larger than the diameter of the third molding block 12, so that a limiting cavity 17 is formed between the inner wall of the mounting hole 16 and the third molding block 12, as shown in fig. 3, a limiting block is formed on the right side of the first molding block 2 and the right side of the second molding block 3, the limiting block is movably clamped in the limiting cavity 17, the limiting of the moving direction of the first molding block 2 and the second molding block 3 is achieved through the limiting cavity 17, meanwhile, the maximum moving distance of the first molding block 2 and the second molding block 3 is limited, more idle strokes of the sliding block mechanism in the using process are avoided, the stability of a mold is ensured, and meanwhile, the whole working efficiency is also improved.
It should be noted that the driving member 11 may be any other driving device such as hydraulic driving, air cylinder driving, etc.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims (8)

1. An adjustable slide mechanism, comprising:
a driving block movably arranged;
the first forming block and the second forming block are movably clamped on the top wall and the bottom wall of the driving block in the vertical direction respectively, the first forming block and the second forming block can contract or keep away from each other relative to the driving block, the first forming block and the second forming block are used for forming a processing groove on the inner hole wall of a workpiece when keeping away from each other, and the first forming block and the second forming block are used for separating from the formed workpiece when contracting away from each other;
the movable block is movably arranged above the driving block and is used for driving the driving block to move so that the first forming block and the second forming block shrink or are far away from each other;
when the movable block is close to the driving block, the driving block is used for driving the first forming block and the second forming block to be far away from each other;
when the movable block is far away from the driving block, the driving block is used for driving the first molding block and the second molding block to shrink in opposite directions.
2. An adjustable slide mechanism as recited in claim 1, wherein the drive block comprises:
the movable seat is provided with an inclined guide hole, and the movable block is movably inserted into the inclined guide hole;
the adjusting block is connected to the movable seat, is located between the first forming block and the second forming block, and is movably clamped with the second forming block.
3. The adjustable slide block mechanism according to claim 2, wherein the top wall and the bottom wall of the adjusting block are both provided with a clamping block in an inclined manner, the first forming block and the second forming block are both provided with a clamping groove in an inclined manner, and the clamping block is movably clamped in the clamping groove.
4. An adjustable slide mechanism as recited in claim 2, further comprising:
the device comprises a mounting seat and a driving piece, wherein the output end of the driving piece is connected with the mounting seat, and the movable seat is movably arranged in the mounting seat;
the third shaping block is connected to one side, far away from the driving piece, of the mounting seat, the first shaping block, the second shaping block and the adjusting block are movably arranged in the third shaping block, and the third shaping block is used for shaping an inner hole on a workpiece.
5. The adjustable slide mechanism of claim 4, wherein the third molding block is provided with a limiting groove along a vertical direction, and the first molding block, the second molding block and the adjusting block are movably disposed in the limiting groove.
6. The adjustable slide block mechanism of claim 4, wherein a fixed block is further arranged on the side wall of the mounting seat, a mounting hole is arranged in the fixed block, a limiting cavity is formed between the inner wall of the mounting hole and the third molding block, and the limiting cavity is used for limiting the moving distance of the first molding block and the second molding block.
7. The adjustable slide mechanism of claim 4, wherein a guide slot is provided in the mounting base, and the movable base is movably clamped in the guide slot.
8. A mould comprising an adjustable slide mechanism according to any one of claims 1 to 7.
CN202322001772.4U 2023-07-28 2023-07-28 Adjustable sliding block mechanism and die Active CN220278070U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322001772.4U CN220278070U (en) 2023-07-28 2023-07-28 Adjustable sliding block mechanism and die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322001772.4U CN220278070U (en) 2023-07-28 2023-07-28 Adjustable sliding block mechanism and die

Publications (1)

Publication Number Publication Date
CN220278070U true CN220278070U (en) 2024-01-02

Family

ID=89330748

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322001772.4U Active CN220278070U (en) 2023-07-28 2023-07-28 Adjustable sliding block mechanism and die

Country Status (1)

Country Link
CN (1) CN220278070U (en)

Similar Documents

Publication Publication Date Title
CN220278070U (en) Adjustable sliding block mechanism and die
CN216828516U (en) Aluminum alloy casting equipment
CN205438996U (en) Split-type forming part of end cover
CN211028032U (en) Movable die holder of gearbox cavity die
CN205255436U (en) Car pilot lamp lamp shade mounting bracket injection mold
CN220347155U (en) Die casting die of oblique slider formula drawing of patterns
CN209832507U (en) Mould for producing leather sheath with plug
CN210553225U (en) Portable demoulding structure of hardware mould
CN203508987U (en) Die-casting die with waste gas easy to exhaust
CN220636271U (en) Die casting die
CN219924518U (en) Mould of secondary ejection stroke system
CN207724757U (en) Stripper apparatus and injection mold with the stripper apparatus
CN219703459U (en) Die casting die
CN220331833U (en) Injection mold
CN221754687U (en) Die casting die convenient to shaping product
CN220347153U (en) Die casting die convenient to drawing of patterns
CN220314067U (en) Mould with oblique ejector pin structure
CN220904018U (en) Core pulling structure with multiple sliding blocks
CN221754693U (en) Die casting die
CN217752530U (en) Mould switch blade retaining structure
CN214872420U (en) Precise injection mold for assembled shell of automobile muffler
CN218256534U (en) Die with height-adjustable positioning pin
CN221622756U (en) Demoulding mechanism of internal slide block
CN218928458U (en) Injection mold capable of performing secondary demolding
CN218948306U (en) High-precision integrated lens barrel mold

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant