CN109180403B - Cylinder type necking-in device - Google Patents
Cylinder type necking-in device Download PDFInfo
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- CN109180403B CN109180403B CN201811062174.5A CN201811062174A CN109180403B CN 109180403 B CN109180403 B CN 109180403B CN 201811062174 A CN201811062174 A CN 201811062174A CN 109180403 B CN109180403 B CN 109180403B
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- pinching
- piston
- cylinder body
- closing
- die holder
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
- C06C7/02—Manufacture; Packing
Abstract
The invention discloses a cylinder type mouth-piece, which belongs to the technical field of civil explosive production and comprises the following components: the cylinder comprises a lower cover, a cylinder body, a piston, a fixed seat, a pinching die holder, a closing-up pinching die holder, a height-adjusting seat, an upper cover and a pinching locking screw; the upper opening end and the lower opening end of the cylinder body are respectively fixed with an upper cover and a lower cover; the piston is coaxially arranged in the cylinder body, a cavity formed by an annular groove of the piston and the inner surface of the cylinder body and an upper air inlet and outlet of the cylinder body, and a cavity between the lower end surface of the piston and the lower cover and a lower air inlet and outlet of the cylinder body; the pinching die holder is coaxially arranged in the cylinder body of the cylinder; the bottom of the closing-up pinching head is in threaded connection with the top of the pinching head locking screw rod and is positioned in the pinching die holder; the invention can overcome the defects that the necking structure occupies too large space in the prior art of the necking device, is not beneficial to miniaturized integrated assembly, inconsistent in necking diameter caused by fluctuation of working air pressure and the like, and can be applied to assembly production of initiating explosive devices such as industrial detonators, relay detonators, ignition tools and the like.
Description
Technical Field
The invention belongs to the technical field of civil blasting equipment production, and particularly relates to a cylinder type mouth collector.
Background
At present, two structural forms of a closing machine for producing a detonator in domestic civil blasting equipment industry exist, one is a mechanical stress type closing machine; the other is a pneumatic pressure type necking machine. The technical principle of the necking machine with the two structures is a lever principle, one is that a cylinder drives a pull lever, the other is that a cam power shaft drives a connecting rod to pull the lever, the lever and a pinching head adopt a hinged structure, when the lever rotates around a hinge under the action of external force, the pinching head is pulled downwards along the axial direction, the pinching head is enabled to shrink radially under the action of the pinching head seat, the shrinkage of the mouth part or the waist part of a detonator is realized, the impression of plastic deformation is pinched, and the bayonet assembly production of an electric detonator, an electronic detonator and a detonating tube detonator is realized. The closing-in power is derived from a cylinder or a lever power arm, wherein the bottom of the closing-in pinching head is connected with a lever, and the closing-in structure enables the basic detonator to be completely covered in the closing-in pinching head, so that laser engraving of detonator shell coding can not be realized while clamping. Moreover, the closing structure and the closing device occupy large space, which is not beneficial to miniaturization and integration of the assembly unit and automatic assembly production device and/or production line. In addition, when the existing lever type closing machine is used for closing the mouth of the detonator, the closing size is greatly influenced by the pressure change of the used compressed air, and the inconsistent closing diameter is easily caused, so that the tensile property, the water resistance and the oil resistance of the detonator are influenced.
Disclosure of Invention
In view of the above, the invention provides a cylinder type necking machine, which can overcome the defects that the prior art has overlarge occupied space of the necking machine structure, is unfavorable for integrated assembly, and has inconsistent necking diameters caused by working air pressure fluctuation.
The invention is realized by the following technical scheme:
a cylinder-type mouth-piece, comprising: the device comprises a lower cover, a cylinder body, a piston, a fixed seat, a pinching die holder, a heightening seat, an upper cover, a heightening screw rod and a pinching locking screw rod;
a lower inlet and a lower outlet A and an upper inlet and a lower outlet B of compressed air are formed in the side wall of the cylinder body, and a step surface is formed in the inner circumferential surface of the cylinder body between the lower inlet and the upper inlet and the lower outlet A and between the lower inlet and the upper inlet and the lower outlet B; an upper cover and a lower cover are respectively fixed at the upper opening end and the lower opening end of the cylinder body, so that the two opening ends of the cylinder body are closed; wherein, the center of the upper cover is provided with a hole for installing the opening part to be folded, and the center of the lower end cover is provided with a mounting hole for mounting the fixing seat;
the outer circumferential surface of the piston is provided with an annular groove along the circumferential direction of the piston, and the middle part of the piston is provided with an axial through hole; the piston is coaxially arranged in the cylinder body, a cavity formed between the annular groove of the piston and the inner circumferential surface of the cylinder body is communicated with the upper inlet and outlet B of the cylinder body, and a cavity between the lower end surface of the piston and the upper end surface of the lower cover is communicated with the lower inlet and outlet A of the cylinder body; the collecting die holder is of a hollow revolving body structure, is coaxially arranged in the cylinder body, is positioned between the upper end face of the piston and the upper cover, is fixed on the upper end face of the piston, and is provided with a central through hole, one end of which is coaxially communicated with the axial through hole of the piston, and the other end of which is provided with a conical hole expanding outwards and is opposite to the mounting hole of the part to be collected of the upper cover;
the fixed seat is of a cylindrical structure, and the bottom of the fixed seat is fixed on the lower end cover after sequentially passing through the mounting hole of the lower end cover and the axial through hole of the piston;
the head pinching locking screw rod is of a hollow structure and is coaxially positioned in the fixed seat, and the bottom of the head pinching locking screw rod is fixedly connected with the lower bottom surface of the fixed seat;
the closing-in pinching head is a hollow revolving body structure, the top of the closing-in pinching head is an outwards-expanded conical structure, and the conical structure is formed by uniformly arranging more than two pinching petals along the circumference; the bottom of the closing-up pinching head is in threaded connection with the top of the pinching head locking screw rod and is positioned in the pinching die holder, and the conical structure of the closing-up pinching head is matched with the conical hole of the pinching die holder;
the height-adjusting screw is in the pinching locking screw in threaded connection, one end of the height-adjusting seat is located in the pinching locking screw, the other end of the height-adjusting seat is located in the pinching of the closing-in, the bottom of the height-adjusting seat is abutted to the height-adjusting screw, and the top of the height-adjusting seat is provided with a conical mounting groove for mounting a detonator.
Further, the cylinder body, the die holder and the closing-in pinching head are all processed with strip-shaped through holes on the side wall, the length directions of the three strip-shaped through holes are consistent with the axial direction of the closing-in pinching head, and the three strip-shaped through holes form optical channels relatively, so that the detonator can be closed or put into assembly, and simultaneously, the coding can be engraved on the detonator tube body by laser.
Further, the piston is a step piston, one end of the step piston is a large-diameter end, the other end of the step piston is a small-diameter end, and the annular groove is positioned on the outer circumferential surface of the transition part of the large-diameter end and the small-diameter end;
in the upward movement process of the step piston, when the large-diameter end of the step piston is abutted against the step surface of the cylinder body, the step surface is used for limiting the upward movement of the step piston, and in the downward movement process of the step piston, when the large-diameter end of the step piston is abutted against the upper surface of the lower cover, the step piston is limited by the upper surface of the lower cover.
Further, a buffer backing ring is arranged on the upper surface of the lower cover.
Further, the anti-rotation guide rod is further arranged, a guide groove along the axial direction of the outer circumferential surface of the pinching die holder is machined, one end of the anti-rotation guide rod is fixed on the side wall of the cylinder body, and the other end of the anti-rotation guide rod is matched with the guide groove and used for preventing the pinching die holder and a piston fixedly connected with the pinching die holder from rotating.
Further, a key block for preventing closing-in and pinching-out from rotating is arranged at the top of the fixing seat; the bottom of the closing-in pinching head is provided with a positioning anti-rotation groove which is used for being matched with a key block at the top of the fixing seat.
Further, the number of the flaps for closing up and pinching the head is 8-32.
Further, the mode of the bottom of the pinching locking screw rod fixedly connected with the lower bottom surface of the fixing seat is as follows: the part of the bottom of the pinching locking screw extending out of the fixing seat is connected with a fine-tuning locking screw plate through external threads, the fine-tuning locking screw plate is fixed on the lower bottom surface of the fixing seat through a screw, and the pinching height of the pinching opening can be finely tuned through the fine-tuning locking screw plate.
Furthermore, the height-adjusting seat and the height-adjusting screw are both provided with axial through holes, and the two axial through holes are communicated to form a gas channel which is connected with the air pipe.
Further, an O-shaped sealing ring is arranged at the contact position of the lower cover and the inner circumferential surface of the cylinder body, and an O-shaped sealing ring is arranged at the contact position of the outer circumferential surface of the piston and the inner circumferential surface of the cylinder body; o-shaped sealing rings are arranged on the contact surfaces of the fixed seat, the lower end cover and the piston.
The beneficial effects are that: according to the invention, the traditional lever type transmission mechanism is replaced by the cylinder body and step piston transmission, so that the space occupation of the necking machine is reduced as a whole; the closing machine realizes closing of the detonator through the movement of a closing die holder coaxially arranged on the step piston, so that the influence of working air pressure fluctuation on the closing size of the detonator is avoided;
the cylinder body and related parts are provided with centered laser channels, so that synchronous execution of detonator closing and detonator body coding laser engraving is realized; the industrial detonator cylinder type necking machine has been used for producing more than 500 thousands of electronic detonators, and the quality level reaches the standard requirement.
Drawings
FIG. 1 is a schematic diagram of the structural composition of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a step piston decoupling strand of the present invention;
fig. 4 is a block diagram of a pinching die holder according to the present invention;
FIG. 5 is a schematic view of a closing-in pinching head according to the present invention;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a cross-sectional view taken at B-B of FIG. 5;
the device comprises a lower cover 1-, an air cylinder body 2-, a step piston 3-, a fixed seat 4-, a die holder 5-closing and pinching, a closing and pinching die holder 6-closing and pinching die holder 7-heightening seat 8-buffering backing rings 9-upper covers 10-heightening screws 11-pinching and pinching locking screws 12-fine-tuning locking screw plates 14-anti-rotation guide rods.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The embodiment provides a cylinder type mouth-piece for closing in industrial detonator, see fig. 1 and 2, including: the device comprises a lower cover 1, a cylinder body 2, a step piston 3, a fixed seat 4, a pinching die holder 5, a pinching head 6, a height-adjusting seat 7, a buffer backing ring 8, an upper cover 9, a height-adjusting screw 10, a pinching locking screw 11, a fine-tuning locking screw plate 12 and an anti-rotation guide rod 14;
a lower inlet and a lower outlet A and an upper inlet and a lower outlet B of compressed air are formed in the side wall of the cylinder body 2, and a step surface is formed in the inner circumferential surface of the cylinder body 2 between the lower inlet and the upper inlet and the lower outlet A and between the lower inlet and the upper inlet and the lower outlet B; an upper cover 9 and a lower cover 1 are respectively fixed at the upper opening end and the lower opening end of the cylinder body 2 through screws, the two opening ends of the cylinder body 2 are closed, an O-shaped sealing ring is arranged at the contact position of the lower cover 1 and the inner circumferential surface of the cylinder body 2, and a buffer backing ring 8 is arranged on the upper surface of the lower cover 1; wherein, the center of the upper cover 9 is provided with a detonator installing hole, and the center of the lower end cover 1 is provided with a mounting hole for mounting the fixing seat 4;
referring to fig. 3, one end of the step piston 3 is a large-diameter end, the other end is a small-diameter end, an annular groove along the circumferential direction is processed on the outer circumferential surface of the transition part of the large-diameter end and the small-diameter end, and an axial through hole is processed in the middle; the step piston 3 is coaxially arranged in the cylinder body 2, a cavity formed between an annular groove of the step piston 3 and the inner circumferential surface of the cylinder body 2 is communicated with an upper inlet and an upper outlet B of the cylinder body 2, and a cavity between the end surface of the large-diameter end of the step piston 3 and the upper end surface of the lower cover 1 is communicated with a lower inlet and an upper outlet A of the cylinder body 2; when the step piston 3 moves upwards, when the large-diameter end of the step piston 3 is abutted against the step surface of the cylinder body 2, limiting of the upward movement of the step piston 3 is realized through the step surface, and when the large-diameter end of the step piston 3 is abutted against the upper surface of the lower cover 1 in the downward movement process of the step piston 3, limiting of the downward movement of the step piston 3 is realized through the upper surface of the lower cover 1, and buffering of the movement of the step piston 3 is realized through the buffer backing ring 8; an O-shaped sealing ring is arranged at the contact position of the outer circumferential surface of the step piston 3 and the inner circumferential surface of the cylinder body 2;
referring to fig. 4, the pinching die holder 5 is a hollow revolving body structure, is coaxially installed in the cylinder body 2, is located between the small diameter end of the step piston 3 and the upper cover 9, and is fixed on the small diameter end of the step piston 3 by a screw, one end of a central through hole of the pinching die holder 5 is coaxially communicated with an axial through hole of the step piston 3, and the other end is an outwards expanded conical hole and is opposite to a detonator loading hole of the upper cover 9; the outer circumferential surface of the pinching die holder 5 is provided with a guide groove along the axial direction, one end of an anti-rotation guide rod 14 is fixed on the side wall of the cylinder body 2, and the other end of the anti-rotation guide rod is matched with the guide groove, so that the pinching die holder 5 and the step piston 3 fixedly connected with the pinching die holder 5 can be prevented from rotating; the axial length of the guide groove is not less than the stroke of the step piston 3.
The fixed seat 4 is of a cylindrical structure, sequentially passes through the mounting hole of the lower end cover 1 and the axial through hole of the step piston 3, is fixed on the lower end cover 1 through a screw at the bottom, and is provided with a key block for preventing the closing-in pinching 6 from rotating at the top; the contact surfaces of the fixed seat 4, the lower end cover 1 and the step piston 3 are provided with O-shaped sealing rings;
the pinching locking screw 11 is of a hollow structure, external threads are respectively processed at the bottom and the top of the pinching locking screw, and internal threads are also processed at the bottom of the pinching locking screw; the pinching locking screw 11 is coaxially positioned in the fixed seat 4, the part of the bottom of the pinching locking screw extending out of the fixed seat 4 is connected with a fine-tuning locking screw plate 12 through external threads, and the fine-tuning locking screw plate 12 is fixed on the lower bottom surface of the fixed seat 4 through screws so as to realize that the pinching locking screw 11 is installed on the fixed seat 4;
referring to fig. 5-7, the closing-up pinching head 6 is a hollow revolution body structure, the top of the closing-up pinching head is an outwards-expanded conical structure, the conical structure is formed by uniformly arranging more than two pinching petals along the circumference, and the number of the pinching petals is 10-24; the bottom of the closing-up pinching head 6 is provided with an internal thread, is connected to the top of the pinching head locking screw 11 through a thread matched with the external thread at the top of the pinching head locking screw 11 and is positioned in the pinching die holder 5, and the conical structure of the closing-up pinching head 6 is matched with the conical hole of the pinching die holder 5; the bottom of the closing-in pinching head 6 is also provided with a positioning anti-rotation groove which is used for being matched with a key block at the top of the fixed seat 4 so as to prevent the closing-in pinching head 6 from rotating;
the fine adjustment locking screw plate 12 is used for locking the pinching locking screw 11 and also used for realizing fine adjustment of the height of the pinching 6 by adjusting the height of the pinching locking screw 11, and the fine adjustment range is 0-2.0 mm;
the height-adjusting screw rod 10 is in threaded connection with the pinching locking screw rod 11 from the bottom of the pinching locking screw rod 11, the bottom of the height-adjusting seat 7 is positioned in the pinching locking screw rod 11 and is in conflict with the height-adjusting screw rod 10, the top of the height-adjusting screw rod is positioned in the pinching 6, and a conical mounting groove for mounting a detonator is formed in the top of the height-adjusting screw rod; the height-adjusting seat 7 and the height-adjusting screw rod 10 are respectively provided with an axial through hole, and the two axial through holes are communicated to form a gas channel which is connected with a gas pipe and used for blowing and cleaning dust and fragments in the mouth-piece;
the cylinder body 2, the closing die holder 5 and the closing die holder 6 are respectively provided with a strip-shaped through hole in a machining mode, the length directions of the three strip-shaped through holes are consistent with the axial direction of the closing die holder 6, and the three strip-shaped through holes form an optical channel relatively, so that the coded laser engraving on a detonator tube body can be realized when the detonator is closed or put into assembly.
Working principle: when the necking device is used for necking industrial detonators, the detonators are arranged in the conical mounting grooves of the heightening seat 7 in the necking and pinching head 6 through detonator arranging holes of the upper cover 9, and the height of the detonators can be adjusted by adjusting the height of the heightening screw 10, so that the tops of the detonators are positioned in the conical structure of the necking and pinching head 6; simultaneously, a chip at the tail end of the leg wire is inserted into the detonator, and the plastic plug coated outside the leg wire is pinched with the detonator to realize the pinching assembly of the detonator;
when the detonator is closed, the cavity between the end face of the large diameter end of the step piston 3 and the upper end face of the lower cover 1 is inflated through the lower inlet and outlet A of the cylinder body 2, the step piston 3 is pushed to move upwards by air pressure, the closing die holder 5 is driven to move upwards, the closing die holder 6 is kept still, when the conical hole at the top of the closing die holder 5 is matched with the conical structure of the closing die holder 6, a radial component force is generated between the closing die holder 5 and the contact conical surface of the closing die holder 6, namely the closing force is determined by the air source pressure and the cylinder diameter of the cylinder body 2; when the pinching force is large enough, the pinching valve of the pinching head 6 is contracted towards the center to enable the shell of the detonator to generate yielding deformation to pinch the plastic plug outside the leg wire and the detonator together, so that the chip is positioned in the detonator, and pinching assembly of the industrial detonator is realized;
wherein, because the upward pushing momentum of the die holder 5 is the set stroke (invariable) of the cylinder body 2, when the fine adjustment of the height of the closing-in and pinching 6 is realized by adjusting the height of the pinching locking screw 11, the radial shrinkage of the closing-in and pinching 6 changes, so the closing-in size of the detonator changes slightly, the fine adjustment of the closing-in size is realized, and the closing-in size change caused by the fluctuation of the working air pressure is avoided.
When the detonator is put into the mouth, when the cavity formed between the annular groove of the step piston 3 and the inner circumferential surface of the cylinder body 2 is inflated through the upper inlet and outlet B of the cylinder body 2, the air pressure pushes the step piston 3 to move downwards, so that the pinching die holder 5 is driven to move downwards, and pinching force is released.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A cylinder-type mouth-piece, characterized by comprising: the device comprises a lower cover (1), a cylinder body (2), a piston, a fixed seat (4), a pinching die holder (5), a closing-in pinching head (6), a height-adjusting seat (7), an upper cover (9), a height-adjusting screw (10) and a pinching locking screw (11);
a lower inlet and a lower outlet A and an upper inlet and a lower outlet B of compressed air are formed in the side wall of the cylinder body (2), and a step surface is formed in the inner circumferential surface of the cylinder body (2) between the lower inlet and the upper inlet and the lower outlet A and between the lower inlet and the upper inlet and the lower outlet B; an upper cover (9) and a lower cover (1) are respectively fixed at the upper opening end and the lower opening end of the cylinder body (2), and the two opening ends of the cylinder body (2) are closed; wherein, the center of the upper cover (9) is provided with a hole for installing the opening part to be opened, and the center of the lower cover (1) is provided with a mounting hole for mounting the fixing seat (4);
the outer circumferential surface of the piston is provided with an annular groove along the circumferential direction of the piston, and the middle part of the piston is provided with an axial through hole; the piston is coaxially arranged in the cylinder body (2), a cavity formed between the annular groove of the piston and the inner circumferential surface of the cylinder body (2) is communicated with the upper inlet and outlet B of the cylinder body (2), and a cavity between the lower end surface of the piston and the upper end surface of the lower cover (1) is communicated with the lower inlet and outlet A of the cylinder body (2); the collecting die holder (5) is of a hollow revolving body structure, is coaxially arranged in the cylinder body (2), is positioned between the upper end face of the piston and the upper cover (9), is fixed on the upper end face of the piston, one end of a central through hole of the collecting die holder (5) is coaxially communicated with the axial through hole of the piston, and the other end of the central through hole is an outwards expanded conical hole and is opposite to a hole for installing a part to be collected of the upper cover (9);
the fixed seat (4) is of a cylindrical structure, and the bottom of the fixed seat is fixed on the lower cover (1) after sequentially passing through the mounting hole of the lower cover (1) and the axial through hole of the piston;
the pinching locking screw rod (11) is of a hollow structure, is coaxially positioned in the fixed seat (4), and the bottom of the pinching locking screw rod is fixedly connected with the lower bottom surface of the fixed seat (4);
the closing-in pinching head (6) is of a hollow revolving body structure, the top of the closing-in pinching head is of an outwards-expanded conical structure, and the conical structure is formed by uniformly arranging more than two pinching petals along the circumference; the bottom of the closing-up pinching head (6) is in threaded connection with the top of the pinching head locking screw rod (11) and is positioned in the pinching die holder (5), and the conical structure of the closing-up pinching head (6) is matched with the conical hole of the pinching die holder (5);
the height-adjusting screw (10) is in screwed connection with the head pinching locking screw (11), one end of the height-adjusting seat (7) is located in the head pinching locking screw (11), the other end of the height-adjusting seat is located in the closing-up head pinching (6), the bottom of the height-adjusting seat (7) is abutted to the height-adjusting screw (10), and a conical mounting groove for mounting a detonator is formed in the top of the height-adjusting seat.
2. The cylinder type mouth collector according to claim 1, wherein strip-shaped through holes are formed in the side walls of the cylinder body (2), the mouth collecting die holder (5) and the mouth collecting die holder (6), the length directions of the three strip-shaped through holes are consistent with the axial direction of the mouth collecting die holder (6), the three strip-shaped through holes form optical channels relatively, and codes can be engraved on a detonator tube body by laser when the detonator is closed or put into assembly.
3. A cylinder type mouth-piece according to claim 1, characterized in that the piston is a stepped piston (3), one end of which is a large-diameter end and the other end is a small-diameter end, and the annular groove is positioned on the outer circumferential surface of the transition part of the large-diameter end and the small-diameter end;
in the upward movement process of the step piston (3), when the large-diameter end of the step piston (3) is abutted against the step surface of the cylinder body (2), the step surface is used for limiting the upward movement of the step piston (3), and in the downward movement process of the step piston (3), when the large-diameter end of the step piston (3) is abutted against the upper surface of the lower cover (1), the step piston (3) is limited by the upper surface of the lower cover (1).
4. A cylinder-type mouth-piece according to claim 1, characterized in that the upper surface of the lower cover (1) is fitted with a buffer grommet (8).
5. The cylinder type mouth-piece according to claim 1, further comprising an anti-rotation guide rod (14), wherein a guide groove along the axial direction of the outer circumferential surface of the pinching die holder (5) is processed, one end of the anti-rotation guide rod (14) is fixed on the side wall of the cylinder body (2), and the other end of the anti-rotation guide rod is matched with the guide groove and is used for preventing the pinching die holder (5) and a piston fixedly connected with the pinching die holder (5) from rotating.
6. The cylinder type mouth-closing device according to claim 1, wherein a key block for preventing the mouth-closing head (6) from rotating is arranged at the top of the fixed seat (4); the bottom of the closing-in pinching head (6) is provided with a positioning anti-rotation groove which is used for being matched with a key block at the top of the fixed seat (4).
7. The cylinder type mouth-closing device according to claim 1, wherein the number of the pinching petals of the mouth-closing pinching head (6) is 8-32.
8. The cylinder type mouth-piece according to claim 1, wherein the bottom of the pinching locking screw (11) is fixedly connected with the lower bottom surface of the fixing seat (4) in the following manner: the part of the bottom of the pinching locking screw (11) extending out of the fixing seat (4) is connected with a fine-tuning locking screw plate (12) through external threads, the fine-tuning locking screw plate (12) is fixed on the lower bottom surface of the fixing seat (4) through a screw, and the closing pinching (6) height can be finely tuned through the fine-tuning locking screw plate (12).
9. A cylinder-type mouth-piece according to claim 1, characterized in that the height-adjusting seat (7) and the height-adjusting screw (10) are provided with axial through holes, and the two axial through holes are communicated to form a gas channel which is connected with a gas pipe.
10. A cylinder type mouth-piece according to claim 1, characterized in that the contact of the lower cover (1) and the inner circumferential surface of the cylinder body (2) is provided with an O-ring, and the contact of the outer circumferential surface of the piston and the inner circumferential surface of the cylinder body (2) is provided with an O-ring; o-shaped sealing rings are arranged on the contact surfaces of the fixed seat (4) and the lower cover (1) and the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811062174.5A CN109180403B (en) | 2018-09-12 | 2018-09-12 | Cylinder type necking-in device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811062174.5A CN109180403B (en) | 2018-09-12 | 2018-09-12 | Cylinder type necking-in device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109180403A CN109180403A (en) | 2019-01-11 |
| CN109180403B true CN109180403B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811062174.5A Active CN109180403B (en) | 2018-09-12 | 2018-09-12 | Cylinder type necking-in device |
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| CN109180403A (en) | 2019-01-11 |
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