CN219094142U - Welding positioning tool - Google Patents

Abstract

The utility model provides a welding positioning tool, which comprises a supporting seat and a locking piece, wherein the supporting seat comprises a boss and a positioning table, a containing cavity is formed in the boss in a surrounding mode, the positioning table is positioned in the containing cavity, and a containing gap is formed between the positioning table and the inner side wall of the boss; the anti-loose piece comprises an operating part and a radial pressing part, the operating part is positioned outside the supporting seat and connected with the radial pressing part, the radial pressing part penetrates through the supporting seat and stretches into the accommodating gap, and the anti-loose piece can move relative to the supporting seat to adjust the distance between the radial pressing part and the positioning table.

Description

Welding positioning tool

Technical Field

The utility model relates to the technical field of biochemical industrial equipment, in particular to a welding positioning tool.

Background

The production of the biological reaction bag comprises a process of welding the material inlet and the film layer, and in order to ensure that the welding position between the material inlet and the film layer is accurate, a positioning tool is used for fixing the material inlet and the film layer during welding so as to ensure that the relative position between the material inlet and the film layer meets the welding process requirement. Due to the reasons that the feeding ports of different production batches have shape or size deviation, the feeding ports are impacted by the positioning tool, and the like, the existing positioning tool is easy to deviate from the feeding ports when in use, so that the feeding ports cannot be fully fixed, position deviation is caused by welding between the feeding ports and the film layer, and the performance and quality requirements of the biological reaction bag are difficult to meet.

Disclosure of Invention

In view of the above, the utility model provides a welding positioning tool capable of overcoming the defect that a feeding port is easy to deviate and improving the positioning effect of the feeding port.

The utility model provides a welding positioning tool, which comprises a supporting seat and a locking piece, wherein the supporting seat comprises a boss and a positioning table, a containing cavity is formed in the boss in a surrounding manner, the positioning table is positioned in the containing cavity, and a containing gap is formed between the positioning table and the inner side wall of the boss; the anti-loose piece comprises an operating part and a radial pressing part, wherein the operating part is positioned outside the supporting seat and connected with the radial pressing part, the radial pressing part penetrates through the supporting seat and stretches into the accommodating gap, and the anti-loose piece can move relative to the supporting seat to increase or decrease the distance between the radial pressing part and the positioning table.

In one embodiment, the welding positioning tool further comprises a pressing piece, the pressing piece comprises a shaft pressing part, the shaft pressing part and the boss are used for clamping the feed port and the film layer, and the shaft pressing part can transfer heat to the feed port and the film layer to weld the feed port and the film layer.

So set up, axial restraint force can be applyed to the dog-house to the axial restraint force to restriction dog-house is along the degree of freedom of axial motion, also can increase the pressure between dog-house and the rete simultaneously, thereby avoid producing the gap between the two and lead to welding failure, can also regard as the heat transfer medium of welding dog-house and rete.

In one embodiment, when the pressing member and the supporting seat are coaxially configured, an end surface of the shaft pressing portion, which is close to one end of the boss, can be entirely orthographically projected on an inner side of an outer edge of the boss end surface along an axial direction.

So set up, when axial pressure portion to feed inlet and rete effect axial pressure, axial pressure portion all does not protrude in the outer fringe of boss terminal surface in its arbitrary radial, consequently axial pressure portion can not touch soft rete to eliminate soft rete and extrude the possibility of damaging or fish tail by pressfitting spare, avoid appearing unqualified biological reaction bag.

In one embodiment, the radial pressing part is in threaded fit with the supporting seat, an angle is formed between the spiral center of the radial pressing part, which moves spirally relative to the supporting seat, and the central line of the accommodating cavity, the operating part comprises a rotary stress part, and the rotary stress part is positioned outside the spiral center.

By means of the arrangement, a person can drive the radial pressing part to gradually approach and prop against the feeding port cylinder body in a spiral motion mode through the spiral actuation control part, the motion of the radial pressing part when the radial pressing part approaches to and applies force to the feeding port can be controlled more accurately, and the situation that the feeding port is damaged or shifted due to excessive extrusion or collision of the radial pressing part to the feeding port is avoided.

In one embodiment, the locking piece further comprises a touch part, the touch part is connected to one end, far away from the control part, of the radial pressing part, and the touch part is used for being in fit contact with the cylinder body of the feeding port.

So set up, can make locking piece constraint more fully and radial fixed feed opening through addding the touching portion, prevent that locking piece from causing the damage to the feed opening to can improve the effect of locking piece to feed opening effect constraint force, avoid producing between locking piece and the feed opening and slide.

In one embodiment, the number of the anti-loose pieces is a plurality of the anti-loose pieces, and the anti-loose pieces are distributed at intervals along the circumference of the center line of the containing cavity.

So set up, a plurality of lockpieces can be in different radial direction to the restriction force of dog-house effect to can restrict the skew of dog-house in a plurality of different radial directions, obtain further promotion to the radial spacing of dog-house.

In one embodiment, the plurality of locking elements are uniformly distributed radially about the centerline of the receiving chamber.

The locking pieces are cooperatively moved and adjusted, so that constraint force can be applied to the feed port in any radial direction of the feed port, and the offset and the activity degree of freedom of the feed port in any radial direction of the feed port can be corrected and limited, thereby remarkably improving the axial position precision of the feed port in welding positioning.

In one embodiment, the axis of the positioning table coincides with the central line of the accommodating cavity, and the accommodating gap is an annular gap.

So set up, the locating bench can be through the mode of applys the restriction force to the feed opening inner wall carries out radial spacing to the feed opening, is favorable to improving the axle center position precision when the feed opening welds.

So set up, hold the annular feed inlet of shape that the clearance can adapt better, not only can be limited radial motion degree of freedom by the locating bench after the feed inlet stretches into the clearance of holding, can also provide inboard support for the feed inlet when footpath pressure portion is close to the locating bench gradually and supports the feed inlet to the protection feed inlet.

In one embodiment, the support seat further comprises a flexible heat insulating piece and an anti-falling piece, the boss is provided with an anti-falling groove, the anti-falling piece is fixedly connected with the flexible heat insulating piece, and the anti-falling piece is inserted into the anti-falling groove to be fixedly connected to the boss.

The flexible heat insulating piece can keep fixed connection through the anti-falling piece and the boss, the capability of the flexible heat insulating piece for resisting axial pressure impact of the pressing piece without deviation is improved, and therefore the flexible heat insulating piece can be ensured to better block heat from spreading to the film layer, the film layer is prevented from being overheated and damaged, or the film layer is shifted by the flexible heat insulating piece.

In one embodiment, the anti-falling groove is formed in the end face of the boss, and the anti-falling piece is fixedly inserted into the anti-falling groove along the axial direction of the supporting seat, so that the flexible heat insulation piece is fixedly attached to the end face of the boss.

So set up, flexible thermal-insulated piece is easier, convenient time-saving on the boss location installation, is difficult to cause flexible thermal-insulated piece deformation and damage, and the anticreep piece can carry out circumference location to flexible thermal-insulated piece, avoids flexible thermal-insulated piece to rotate in anticreep groove.

In one embodiment, the flexible heat insulating member is provided with a matching groove, the anti-falling member and the flexible heat insulating member are formed in a split mode, and the anti-falling member is inserted into the matching groove to be fixedly connected to the flexible heat insulating member.

By the arrangement, the flexible heat insulating piece can be independently formed without being integrally formed with the anti-falling piece, so that the manufacturing cost of the flexible heat insulating piece and the anti-falling piece is reduced.

In one embodiment, the support base further comprises a flexible heat insulating piece, the flexible heat insulating piece is a hollow annular piece, the end face of the boss is provided with a heat insulating piece groove, the heat insulating piece groove extends around the axis of the support base, the flexible heat insulating piece is filled in the heat insulating piece groove, and the flexible heat insulating piece is flush with the end face of the boss.

The groove wall of the heat insulating part groove can apply radial constraint force to the flexible heat insulating part, so that the flexible heat insulating part is prevented from deviating relative to the boss along the radial direction, the problem that the flexible heat insulating part cannot fully block heat transfer to the film layer is avoided, and the possibility of excessive thermal damage of the film layer is eliminated; the flexible heat insulating piece is flush with the end face of the boss, so that an impression can not be generated on the film layer or a welding flange of the feed opening when the boss and the shaft pressing part clamp and press the feed opening and the film layer, and the welding flange of the feed opening and the surface of the film layer are smooth.

The utility model has at least the following beneficial effects: under the condition that the feeding port cylinder body stretches into the accommodating cavity, force is only required to be applied to the operating part, the distance between the radial pressing part and the central line of the accommodating cavity is adjusted, the distance between the radial pressing part and the peripheral wall of the feeding port cylinder body can be adjusted, the radial pressing part can gradually approach the feeding port cylinder body and finally prop against the feeding port cylinder body along with the reduction of the distance between the radial pressing part and the central line of the accommodating cavity, radial constraint force is applied to the feeding port cylinder body, the effect of limiting the movement freedom degree of the feeding port in the feeding port caliber upward is achieved, and the radial deviation of the feeding port can be avoided, so that the welding effect between the feeding port and a film layer can be improved.

Drawings

FIG. 1 is a schematic diagram of assembly of a feed inlet and a film layer during welding;

FIG. 2 is a schematic structural diagram of a welding positioning tool according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a portion of a welding positioning tool according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a portion of a welding positioning tool according to an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view of a weld fixture according to one embodiment of the present utility model;

fig. 6 is a schematic diagram illustrating the use of a welding positioning tool according to an embodiment of the present utility model.

Reference numerals illustrate:

100. welding and positioning a tool; 10. a support base; 11. a boss; 111. an anti-drop groove; 113. a heat shield groove; 114. a through hole; 12. a receiving chamber; 13. a positioning table; 14. an accommodation gap; 15. a base; 20. a locking piece; 21. a radial pressing part; 22. a manipulation section; 23. a touch part; 30. pressing the piece; 31. an axial pressing part; 32. a pressing plate; 40. a flexible heat shield; 50. an anti-falling member; 210. a feed port; 211. a cylinder; 212. welding the flange; 213. a feeding channel; 220. and (3) a film layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

Unless defined otherwise, 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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

The utility model provides a welding positioning tool 100, which is used for fixing and limiting a feed port 210 and a film 220 when the feed port 210 and the film 220 are welded, so that the feed port 210 and the film 220 are prevented from deflecting or relatively moving, and the welding position accuracy of the feed port 210 and the film 220 is ensured. The material inlet 210 and the film layer 220 are both materials for producing the bioreactor bag, the film layer 220 is used for forming a bag body of the bioreactor bag, and the material inlet 210 is used for forming a material inlet channel 213 for biological materials or reactants to enter the bag body.

Referring to fig. 1, a feed port 210 includes a cylinder 211 and a welding flange 212 fixedly connected to one end of the cylinder 211, wherein the welding flange 212 protrudes relative to the outer circumferential wall of the cylinder 211 in the radial direction of the cylinder 211 and forms a step angle with the outer circumferential wall of the cylinder 211, and a feed channel 213 penetrates through two ends of the cylinder 211; the film layer 220 is provided with a through hole, the cylinder 211 extends into the through hole and penetrates through the film layer 220, one side of the film layer 220 is attached to the welding flange 212, and the welding part of the film layer 220 and the feeding hole 210 is the edge of the through hole of the film layer 220 and the welding flange 212. The finally obtained biological reaction bag is characterized in that the cylinder 211 is arranged at the outer side of the biological reaction bag and protrudes relative to the surface of the bag body, and the feeding channel 213 of the cylinder 211 is communicated with the inner side and the outer side of the biological reaction bag.

The welding positioning tool 100 of the utility model comprises a supporting seat 10 and a pressing piece 30, wherein one side of the supporting seat 10 in the axial direction of a welding flange 212 applies a supporting force along the axial direction of a cylinder 211 of a feed port 210 to the welding flange 212 and a film layer 220, the pressing piece 30 is used for applying a pressure along the axial direction of the cylinder 211 to the other side of the welding flange 212 in the axial direction of the welding flange 212 to the welding flange 212 and the film layer 220, and under the combined action of the supporting seat 10 and the pressing piece 30, the welding flange 212 and the film layer 220 are clamped and fixed by the pressing piece 30 and the supporting seat 10, so that the limitation of the freedom degree of the feed port 210 and the film layer 220 in the axial direction of the feed port 210, namely the axial direction of the cylinder 211, is realized.

Referring to fig. 2-3, the supporting seat 10 includes a boss 11, the boss 11 has a receiving cavity 12, the receiving cavity 12 penetrates at least one end of the boss 11, and an open opening is formed at an end of the boss 11, and for convenience of description, the end of the boss 11 with the open opening is defined as a supporting end. The support end is used for supporting the welding flange 212 and the film layer 220 of the feed port 210, the welding flange 212 is opposite to the support end, the support end and the welding flange 212 clamp the film layer 220 from two sides of the film layer 220 respectively, and the cylinder 211 of the feed port 210 extends into the accommodating cavity 12. The accommodating chamber 12 is a cylindrical chamber, and the cylinder 211 can rotate around the axis of the cylinder 211 after extending into the accommodating chamber 12.

Referring to fig. 2 and 5, the pressing member 30 includes an axial pressing portion 31, the axial pressing portion 31 is cylindrical or tubular, the pressing member 30 is configured to be coaxially disposed with the supporting seat 10, and the pressing member 30 can move relatively near the supporting seat 10 along an axial direction of the supporting seat 10 from a vertical upper side of the supporting member until the axial pressing portion 31 abuts against a side of the welding flange 212 relatively far from the supporting end of the boss 11 under a condition that the pressing member 30 is coaxially disposed with the supporting seat 10. Specifically, the axis of the pressing member 30 is the axis of the shaft pressing portion 31, the axis of the supporting seat 10 is the axis of the boss 11, and the axis of the boss 11 is the center line of the accommodating cavity 12. The final welding flange 212 and the film 220 are clamped together by the end of the shaft pressing portion 31 and the support end of the boss 11, and the shaft pressing portion 31 directly contacts the side of the welding flange 212 facing away from the film 220.

Optionally, the supporting seat 10 further includes a base 15, the base 15 is fixedly connected to the other end of the boss 11 relatively far from the supporting end, the pressing member 30 further includes a pressing plate 32, and the pressing plate 32 is fixedly connected to the one end of the shaft pressing portion 31 relatively far from the boss 11. Before the material inlet 210 and the film 220 are prepared for welding, the base 15 and the pressing plate 32 are connected to two driving mechanisms capable of moving in opposite directions, the shaft pressing part 31 and the boss 11 are coaxial, and the two driving mechanisms can move in opposite directions along the axis of the shaft pressing part 31. The two drive mechanisms may be two telescopic cylinders.

Optionally, the outer diameter of the end of the shaft pressing portion 31 relatively close to the boss 11 is smaller than the outer diameter of the supporting end of the boss 11, and when the pressing member 30 and the supporting seat 10 are respectively connected to the two driving mechanisms and coaxially configured, the orthographic projection of the shaft pressing portion 31 projected to the supporting end of the boss 11 along the axial direction of the supporting seat 10 is located all inside the outer edge of the supporting end of the boss 11, that is, the end of the shaft pressing portion 31 close to the boss 11 does not protrude from the supporting end in the radial direction of the boss 11. Thereby eliminating the possibility of the axial press 31 squeezing or scratching the film layer 220.

The supporting seat 10 further includes a positioning table 13, referring to fig. 2-3 and 5, the positioning table 13 is fixedly disposed inside the accommodating cavity 12, and an accommodating gap 14 is formed between an outer sidewall of the positioning table 13 and an inner sidewall of the boss 11. The cylinder 211 of the feed opening 210 can extend into the receiving space 14 and can be sleeved with the positioning table 13. The positioning table 13 may apply radial pressure to the inner peripheral wall of the cylinder 211 to further limit the radial freedom of movement of the feed port 210.

Optionally, the positioning table 13 is columnar, the inner wall surface of the accommodating cavity 12 is an inner cylindrical surface, the axis of the positioning table 13 coincides with the central line of the accommodating cavity 12, the accommodating gap 14 is an annular gap, and after the feeding port 210 is sleeved with the positioning table 13, the cylinder 211 of the feeding port 210 is coaxial with the positioning table 13.

Further, the positioning table 13 and the boss 11 are both arranged on the same side of the base 15 in a protruding manner, and the outer edge of one end, far away from the base 15, of the positioning table 13 is provided with a chamfer, so that the cylinder 211 can be quickly and smoothly sleeved with the positioning table 13, and the height distance of the positioning table 13 protruding from the base 15 is greater than the height distance of the boss 11 protruding from the base 15.

When the pressing member 30 moves relatively close to the supporting seat 10, a large momentum is generated, and when the shaft pressing portion 31 abuts against the welding flange 212, the shaft pressing portion 31 applies a large impact force to the welding flange 212, the through hole edge of the film 220, and the supporting end of the boss 11. If gaps exist between the welding flange 212, the edge of the through hole of the film 220 and the support end, or coaxiality deviation exists between the feed port 210 and the boss 11, or coaxiality deviation exists between the pressing portion and the support seat 10, the impact force generated by the shaft pressing portion 31 will drive the feed port 210 to generate radial deviation or swing relative to the boss 11. In addition, due to the inconsistent size or shape of the different batches of the feed ports 210, some of the feed ports 210 and the bosses 11 are difficult to fit tightly, and the feed ports 210 sway relative to the bosses 11 when pressure is applied by the pressing portion.

In view of this, the welding positioning tool 100 provided by the present utility model further includes a locking piece 20, where the locking piece 20 movably penetrates through the supporting seat 10, and includes a manipulation portion 22 and a radial pressing portion 21 that are connected, where the manipulation portion 22 is located on the outer side of the supporting seat 10, specifically on the side of the boss 11 facing away from the accommodating cavity 12, and the radial pressing portion 21 penetrates through the supporting seat 10 and extends into the accommodating cavity 12, and in the embodiment shown in fig. 4-5, the radial pressing portion 21 penetrates through the base 15 and extends into the accommodating gap 14. The locking piece 20 can move relative to the supporting seat 10 to change the depth of the locking piece 20 entering the accommodating gap 14, thereby increasing or decreasing the distance between one end of the radial pressing portion 21 relatively far from the operating portion 22 and the outer side wall of the positioning table 13.

The anti-loose piece 20 is movable relative to the supporting seat 10 and requires personnel or equipment to apply external force to the operating part 22, when no external force acts on the operating part 22, the anti-loose piece 20 can be fixed relative to the supporting seat 10, and as the distance from one end of the radial pressing part 21, which is relatively far away from the operating part 22, to the central line of the accommodating cavity 12 is reduced, the radial pressing part 21 gradually approaches the outer side wall of the positioning table 13 and finally can be abutted against the outer peripheral wall of the cylinder 211 of the feed port 210, so that radial constraint force is applied to the feed port 210, and the radial deflection of the feed port 210 or the swinging and shaking degrees of freedom relative to the supporting seat 10 are limited. When the radial pressing portion 21 applies pressure to the outer peripheral wall of the cylinder 211 of the feed port 210, the positioning table 13 provides support for the inner wall of the cylinder 211 of the feed port 210, so as to protect the feed port 210 from being extruded and deformed by the radial pressing portion 21.

Please refer to fig. 2, fig. 4, fig. 5-fig. 6. In some embodiments, the radial pressing portion 21 may be a rod with external threads, the base 15 is provided with a through hole 114 penetrating through the inner side wall of the accommodating cavity 12, the through hole 114 has internal threads matching with the external threads of the rod, and the center line of the through hole 114 is used as the spiral center of the radial pressing portion 21 in spiral motion relative to the supporting seat 10. The radial pressing portion 21 is movably projected into the through hole 114 in a spiral movement manner, thereby changing the depth of the radial pressing portion 21 projected into the accommodating chamber 12, that is, the distance from the end of the radial pressing portion 21 relatively far from the manipulation portion 22 to the center line of the accommodating chamber 12. The operating portion includes a rotation force receiving portion located outside the center line of the through hole 114, whereby an external force acting on the rotation force receiving portion can be converted into a torque for driving the radial pressing portion 21 to move spirally.

The center line of the through hole 114 and the center line of the accommodating cavity 12 have an angle, alternatively, the center line of the through hole 114 is perpendicular to and intersects with the center line of the accommodating cavity 12, during the spiral movement of the radial pressing part 21, one end of the radial pressing part 21, which is relatively far away from the operating part 22, always points to the center line of the accommodating cavity 12, and when the radial pressing part 21 is abutted to the peripheral wall of the cylinder 211, the pressure direction of the radial pressing part 21 acting on the cylinder 211 is approximately directed to the axis of the cylinder 211. Of course, in some embodiments not shown in the figures, the angle between the centerline of the through-hole 114 and the centerline of the receiving chamber 12 may also be acute or obtuse.

Alternatively, the locking member 20 includes a butterfly bolt, the operating portion 22 is a bolt head of a butterfly screw, and the radial pressing portion 21 is a screw portion of the butterfly bolt.

Alternatively, the number of the locking pieces 20 and the through holes 114 is plural, the plurality of locking pieces 20 are spaced apart in the circumferential direction of the center line of the accommodating chamber 12, and the plurality of through holes 114 are spaced apart in the circumferential direction of the center line of the accommodating chamber 12.

Further, the plurality of locking pieces 20 are uniformly distributed radially around the center line of the accommodating cavity 12, the plurality of through holes 114 are uniformly distributed radially around the center line of the accommodating cavity 12, the center line of any one through hole 114 is intersected with and perpendicular to the center line of the accommodating cavity 12, and the included angles between the center lines of any two adjacent through holes 114 are equal.

Optionally, the anti-loosening member 20 further includes a touching portion 23, where the touching portion 23 is fixedly disposed at one end of the radial pressing portion 21 relatively far from the operating portion 22, and the touching portion 23 is adapted to and directly contacts the outer peripheral wall of the cylinder 211 of the feeding port 210. The shape of the contact portion 23 may be circular, or may be an arc-shaped curved surface capable of being bonded to the outer peripheral wall of the cylinder 211.

The through hole 114 is not necessarily formed only in the base 15, but in some embodiments not shown in the drawings, the through hole 114 may be formed in an outer side wall of the boss 11, and the through hole 114 penetrates an inner side wall of the accommodating cavity 12 along a radial direction of the boss 11.

In some embodiments, the support base 10 further includes a flexible heat insulating member 40, where the flexible heat insulating member 40 is disposed at the support end of the boss 11 and is used to occupy between the support end and the film layer 220, and block a portion of heat from being transferred to the film layer 220, so as to prevent the film layer 220 from being damaged due to overheating. Referring to fig. 3, 4 and 5, the supporting end of the boss 11 is provided with a heat insulating member groove 113, the heat insulating member groove 113 extends annularly around the axis of the supporting seat 10, the flexible heat insulating member 40 is annular, the size of the flexible heat insulating member 40 is matched with that of the heat insulating member groove 113, and the cylinder 211 of the feeding port 210 penetrates through the flexible heat insulating member 40. The heat insulator groove 113 has a first groove wall facing the axis of the support base 10, and the first groove wall abuts against the outer peripheral wall of the flexible heat insulator 40.

Optionally, the heat-insulating member groove 113 further has a second groove wall facing away from the axis of the supporting seat 10, the second groove wall being abutted against the inner peripheral wall of the flexible heat-insulating member 40, and the flexible heat-insulating member 40 being filled in the heat-insulating member groove 113 along the axial direction of the boss 11; the flexible heat insulating member 40 is a silica gel gasket, and the silica gel gasket has good shock resistance and shock absorption effect; the outer circumference diameter of the flexible heat insulating member 40 is larger than the outer circumference diameter of the welding flange 212, after the flexible heat insulating member 40 is filled in the heat insulating member groove 113, the supporting end is flush with the flexible heat insulating member 40, so that an imprint is prevented from being generated on the membrane layer 220 and the welding flange 212 of the feed port 210 when the shaft pressing part 31 and the boss 11 clamp the feed port 210 and the membrane layer 220, and the welding fusion area between the welding flange 212 of the feed port 210 and the membrane layer is larger.

In some embodiments, the support base 10 further includes a drop-preventing member 50, the boss 11 is further provided with a drop-preventing groove 111, the drop-preventing member 50 is fixedly connected with the flexible heat insulating member 40, and is further inserted into the drop-preventing groove 111 so as to be fixedly connected with the boss 11, thereby fixing the flexible heat insulating member 40 relative to the boss 11. Referring to fig. 3, 5 and 6, in the embodiment shown in the drawings, the anti-falling groove 111 is formed at the supporting end of the boss 11, and has a depth distance in the axial direction of the supporting seat 10, the anti-falling groove 111 preferably extends along a direction parallel to the axial direction of the supporting seat 10, and the anti-falling member 50 is fixedly inserted into the anti-falling groove 111 along the axial direction of the supporting seat 10, so that the flexible heat insulation member 40 is fixedly attached to the supporting end of the boss 11.

Further, the flexible heat insulating element 40 is further provided with a matching groove, the flexible heat insulating element 40 and the anti-falling element 50 are formed in a split mode, the anti-falling element 50 is fixedly inserted into the matching groove to be fixedly connected with the flexible heat insulating element 40, the anti-falling element 50 does not protrude out of one side of the flexible heat insulating element 40, which is away from the supporting end, preferably, one end of the anti-falling element 50 inserted into the flexible heat insulating element 40 is flush with one side of the flexible heat insulating element 40, which is away from the supporting end. The number of the matching grooves is the same as that of the anti-falling grooves 111, and the matching grooves and the anti-falling grooves 111 are uniformly distributed around the axis of the supporting seat 10.

It should be noted that, the locking piece is not limited to the butterfly bolt, the connection fit between the locking piece and the boss is not limited to the threaded fit, in other embodiments, the locking piece may also be of other types of structures, for example, the locking piece may also include an elastic piece, where one end of the elastic piece is connected to a portion of the radial pressing portion extending into the inner side of the boss, and the other end of the elastic piece is connected to the inner side of the boss, so that the elastic piece has an elongated deformation tendency, under which the force of the elastic piece acting on the radial pressing portion causes the depth dimension of the locking piece extending into the inner side of the boss to have a further increase, so that one end of the radial pressing portion relatively far from the operating portion has a tendency to move relatively close to the center line of the accommodating cavity, and under the elastic action of the elastic piece, the radial pressing portion abuts against the outer peripheral wall of the feed port cylinder 211, and can also play a role in limiting the freedom of movement of the feed port in the radial direction.

The technical features of the above-described embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above-described embodiments are not described, however, all of the combinations of the technical features should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

It will be appreciated by persons skilled in the art that the above embodiments have been provided for the purpose of illustrating the utility model and are not to be construed as limiting the utility model, and that suitable modifications and variations of the above embodiments are within the scope of the utility model as claimed.

Claims (10)

1. The welding positioning tool is characterized by comprising a supporting seat (10) and a locking piece (20), wherein the supporting seat (10) comprises a boss (11) and a positioning table (13), a containing cavity (12) is formed in the boss (11) in a surrounding mode, the positioning table (13) is located in the containing cavity (12), and a containing gap (14) is formed between the positioning table (13) and the inner side wall of the boss (11);

the anti-loose piece (20) comprises an operating part (22) and a radial pressing part (21), the operating part (22) is located on the outer side of the supporting seat (10) and connected with the radial pressing part (21), the radial pressing part (21) penetrates through the supporting seat (10) and stretches into the accommodating gap (14), and the anti-loose piece (20) can move relative to the supporting seat (10) to adjust the distance between the radial pressing part (21) and the positioning table (13).

2. The welding positioning tool according to claim 1, further comprising a press-fit piece (30), wherein the press-fit piece (30) comprises a shaft press portion (31), the shaft press portion (31) and the boss (11) are used for clamping a feed port (210) and a film layer (220), and the shaft press portion (31) can transfer heat to the feed port (210) and the film layer (220) to weld the feed port (210) and the film layer (220).

3. The welding positioning tool according to claim 2, wherein when the pressing member (30) and the supporting seat (10) are coaxially configured, an end face of the shaft pressing portion (31) near one end of the boss (11) is axially orthographic projected on an inner side of an outer edge of the end face of the boss (11).

4. Welding positioning tool according to claim 1, characterized in that the radial press part (21) is in threaded fit with the support base (10), the radial press part (21) has an angle between the spiral center of the spiral movement of the support base (10) and the center line of the accommodating cavity (12), the operating part comprises a rotation stress part, and the rotation stress part is positioned outside the spiral center; and/or the number of the groups of groups,

the anti-loose piece (20) further comprises a touching part (23), the touching part (23) is connected to one end of the radial pressing part (21) which is relatively far away from the operating part (22), and the touching part (23) is used for being in fit contact with a cylinder body of the feeding port (210).

5. The welding positioning tool according to claim 1, wherein the number of the locking pieces (20) is plural, and the plurality of locking pieces (20) are distributed at intervals along the circumference of the center line of the accommodating cavity (12).

6. The welding positioning tool according to claim 5, wherein the plurality of locking pieces (20) are uniformly distributed radially around the center line of the accommodating chamber (12).

7. Welding positioning tool according to claim 1, characterized in that the axis of the positioning table (13) coincides with the centre line of the receiving cavity (12), the receiving gap (14) being an annular gap.

8. The welding positioning tool according to claim 1, wherein the supporting seat (10) further comprises a flexible heat insulating member (40) and an anti-falling member (50), the boss (11) is provided with an anti-falling groove (111), the anti-falling member (50) is fixedly connected with the flexible heat insulating member (40), and the anti-falling member (50) is inserted into the anti-falling groove (111) to be fixedly connected to the boss (11).

9. The welding positioning tool according to claim 8, wherein the anti-drop groove (111) is formed in an end face of the boss (11), and the anti-drop member (50) is fixedly inserted into the anti-drop groove (111) along an axial direction of the supporting seat (10), so that the flexible heat insulation member (40) is fixedly attached to the end face of the boss (11); and/or the number of the groups of groups,

the flexible heat insulation part (40) is provided with a matching groove, the anti-falling part (50) and the flexible heat insulation part (40) are formed in a split mode, and the anti-falling part (50) is inserted into the matching groove to be fixedly connected to the flexible heat insulation part (40).

10. The welding positioning tool according to claim 1, wherein the supporting seat (10) further comprises a flexible heat insulating member (40), the flexible heat insulating member (40) is a hollow annular member, a heat insulating member groove (113) is formed in the end face of the boss (11), the heat insulating member groove (113) extends around the axis of the supporting seat (10), the flexible heat insulating member (40) is filled in the heat insulating member groove (113), and the flexible heat insulating member (40) is flush with the end face of the boss (11).

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