Polytetrafluoroethylene isostatic pressing device
By designing isostatic press forming devices, the linkage mechanism of sliders and locking pins is used to space and fix the pipe fittings, the cracks caused by impact during high-pressure forming of polytetrafluoroethylene pipelines are solved, and the product pass rate and processing efficiency are improved.
Patent Information
- Application Number
- CN202411431315.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-01-10
AI Technical Summary
During the high-pressure forming process of polytetrafluoroethylene pipeline lining, a large number of pipes are easily bumped and impacted during stacking, resulting in cracks and hidden cracks in the lining, which leads to leakage after power-on, reducing the product yield and Increased processing costs.
A polytetrafluoroethylene isostatic forming device is designed, adopting a combined structure of the main body, cover, carrier frame and sliding lock unit. The pipe fittings are spaced and fixed on the carrier frame through the linkage mechanism of the slider and lock pin to avoid adjacent ones. The contact and impact of pipe fittings improves yield and operating efficiency.
It effectively avoids cracks and hidden cracks caused by impact and bumps during the forming process of pipe fittings, improves the product's pass rate and processing efficiency, and ensures the quality and cost control of the lining.
Smart Images
Figure CN119283267A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pipeline lining molding equipment, and in particular to a polytetrafluoroethylene isostatic pressing molding device. Background Art
[0002] Pipe lining is a kind of pipe lining with steel or hard structure as the external pipe skeleton, and supplemented with high and low temperature resistance, anti-corrosion and other materials inside to ensure that the pipeline performance meets practical needs.
[0003] Among them, polytetrafluoroethylene has good high and low temperature resistance, corrosion resistance, weather resistance and other characteristics, and is more popular in use; during processing, the pipeline skeleton is often used as an outer mold, and the inner mold is placed in the hollow position inside the skeleton. Polytetrafluoroethylene raw materials are added between the inner mold and the outer mold, and then the pipeline skeleton and the inner mold are placed in the molding equipment. After high-pressure molding, it is transferred to the subsequent station for sintering. After sintering, the product will be powered on to test its performance. In the high-pressure molding step, a single product is generally subjected to high-pressure molding, which has low work efficiency; some people have proposed to place a large number of products together and perform high-pressure molding at the same time; however, before sintering, a large number of products will inevitably collide and bump during the stacking process; it is very easy to cause cracks, hidden cracks and other defects between the polytetrafluoroethylene raw materials. After sintering, the defective polytetrafluoroethylene will leak electricity after power is turned on, and the product processing is unqualified, which reduces the yield rate, wastes raw materials and increases processing costs. Therefore, it is necessary to improve and optimize the existing technology. Summary of the invention
[0004] The present invention provides a polytetrafluoroethylene isostatic pressing device, which solves the problem in the related art that when a large number of pipelines are centrally stacked, the pipelines are bumped and hit, resulting in leakage after the inner lining is powered on.
[0005] The technical solution of the present invention is as follows: A polytetrafluoroethylene isostatic pressing device, comprising: a main body having a molding cavity; A sealing cover, detachably disposed on the main body, for sealing the molding chamber or canceling the sealing; A carrier frame is detachably arranged in the molding chamber and has an open slot, wherein the open slot is used to place the pipe fitting; A sliding lock unit is used to fix the pipe fitting, and the sliding lock unit comprises: A sliding member 1 is slidably arranged on the supporting frame, and after sliding, the sliding member 1 contacts or cancels the contact with the pipe member; The sliding member 2 is slidably arranged on the supporting frame. After sliding, the sliding member 2 contacts or cancels the contact with the pipe. The sliding member 1 and the sliding member 2 are respectively located on both sides of the pipe.
[0006] As a further technical solution, the first sliding member has a first locking hole, the second sliding member has a second locking hole, and the sliding locking unit further includes: A lock pin 1 is slidably arranged on the carrier frame, and the lock pin 1 is inserted into the lock hole 1 or the insertion is cancelled after sliding; The second lock pin is slidably arranged on the support frame, and the second lock pin is inserted into the second lock hole or the insertion is cancelled after sliding.
[0007] As a further technical solution, the sliding lock unit further includes: A spring 1, one end of which acts on the bearing frame, and the other end of which acts on the locking pin 1; Spring 2 has one end acting on the bearing frame and the other end acting on the locking pin 2.
[0008] As a further technical solution, the sliding lock unit further includes: A spring three, one end of which acts on the bearing frame, and the other end of which acts on the sliding member one; A spring four has one end acting on the support frame and the other end acting on the sliding member two.
[0009] As a further technical solution, there are a plurality of sliding lock units, the first sliding lock unit is located at the end of the opening groove closest to the opening, and the remaining sliding lock units are distributed in sequence at intervals.
[0010] As a further technical solution, it further includes a linkage unit 1, which is used to connect the first sliding lock unit and the sliding lock unit adjacent to the first sliding lock unit, and the linkage unit 1 includes: A swinging member 1 is swingably arranged on the supporting frame, and the swinging member 1 has a first slide groove and a second slide groove; A sliding column 1, slidably disposed in the sliding groove 1 and fixedly connected to the sliding member 1 of the first sliding lock unit; The second sliding column is slidably disposed in the second sliding groove and is fixedly connected to the first sliding member of the second sliding lock unit.
[0011] As a further technical solution, it also includes a linkage unit 2, starting from the second sliding lock unit, the linkage unit 2 is arranged between the front and rear adjacent sliding lock units, and the linkage unit 2 includes: A second swinging member is swingably arranged on the supporting frame, and the second swinging member has a third slide groove and a fourth slide groove; A triggering member, slidably disposed on the sliding member 1 of the previous sliding lock unit, wherein the triggering member contacts or cancels the contact with the pipe member after sliding; A sliding column three, slidably disposed in the sliding groove three and fixedly connected to the trigger member; A sliding column four, slidably disposed in the sliding groove four, and fixedly connected to the sliding member one of the subsequent sliding lock unit; Spring five, one end of which acts on the trigger member, and the other end of which acts on the sliding member one of the previous sliding lock unit.
[0012] As a further technical solution, a regulating unit is further included, which is used to adjust the sliding of the lock pin 1 and the lock pin 2, and the regulating unit includes: A sliding member 3 is slidably arranged relative to the supporting frame; A connecting rod 1, which is arranged on the sliding member 3 and is slidably arranged on the locking pin 1; A limiting ring is arranged on the locking pin 1, and the connecting rod 1 contacts or cancels the contact with the limiting ring after sliding; A swing member 3 is swingably arranged on the supporting frame, and the swing member 2 has a slide groove 5 and a slide groove 6; A sliding column 5 is slidably disposed in the sliding groove 5 and is fixedly connected to the locking pin 2; The sliding column six is slidably disposed in the sliding groove six and is fixedly connected to the sliding member three.
[0013] As a further technical solution, it also includes: The bracket is arranged in the molding chamber and is used for supporting the supporting frame.
[0014] As a further technical solution, it also includes: A positioning buckle, arranged on the bracket; A positioning column is arranged on the supporting frame and is engaged with the positioning buckle.
[0015] The working principle and beneficial effects of the present invention are: In the present invention, the isostatic pressing device includes a main body, a cover, a carrier and a sliding lock unit, wherein the sliding lock unit includes a sliding member 1 and a sliding member 2; the sliding lock unit also includes a lock pin 1, a lock pin 2, a spring 1, a spring 2, a spring 3 and a spring 4; the carrier includes an upper and lower double-layer plate combination structure, and the pipe fitting is placed vertically on the carrier, the upper end of the pipe fitting is located on the upper side of the upper plate, and the lower end of the pipe fitting is located on the lower side of the lower plate, and the open groove is a long U shape. The sliding direction of the pipe fitting in the open groove is perpendicular to the sliding direction of the sliding member 1 and the sliding member 2.
[0016] Before placing the pipe fitting, apply external force to separate lock pin 1 from lock hole 1 and compress spring 1, and at the same time separate lock pin 2 from lock hole 2 and compress spring 2; spring 3 is in a naturally extended state, and one end of sliding member 1 away from spring 3 extends into the area where the opening groove is located; spring 4 is in a naturally extended state, and one end of sliding member 2 away from spring 4 extends into the area where the opening groove is located.
[0017] When placing the pipe fitting, align the middle straight section of the pipe fitting with the opening of the open groove, and then slide it toward the innermost side of the open groove. The middle straight section of the pipe fitting first comes into compression contact with the second slide member, and finally comes into compression contact with the first slide member. The sliding directions of the first slide member and the second slide member are not parallel to the sliding direction of the pipe fitting in the open groove. When the pipe fitting comes into compression contact with the second slide member, with the help of the extrusion of the pipe fitting, the second slide member slides away from the open groove and squeezes the fourth spring, which is forced to shrink and accumulate elastic force. Similarly, when the pipe fitting comes into compression contact with the first slide member, with the help of the extrusion of the pipe fitting, the first slide member slides away from the open groove and squeezes the third spring, which is forced to shrink and accumulate elastic force. Finally, the pipe fitting stays at the innermost side of the open groove, and at this time, the first slide member and the second slide member are respectively located on both sides of the pipe fitting.
[0018] At this time, the applied external force is removed, spring 1 stretches and pushes lock pin 1 into lock hole 1, spring 2 stretches and pushes lock pin 2 into lock hole 2, and the fixing of slide 1 and slide 2 is completed. With the help of the sliding lock units that are distributed in sequence, several pipes can be fixed in the same open slot at intervals; at the same time, several open slots are opened on the carrier, and the pipes in adjacent open slots are staggered with each other, which increases the storage capacity of pipes on the carrier, increases the amount of finished products in a single forming operation of the isostatic pressing forming device, and improves the overall operation efficiency. At the same time, it can avoid contact, collision, and bumping between adjacent pipes on the carrier, avoid the problem of internal hidden cracks and cracks after the lining is sintered, and improve the qualified rate of products. At the same time, with the help of the carrier, it is convenient for pipes to be transported in large quantities and high-pressure forming operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.
[0020] Figure 1 It is a schematic diagram of the structure in the molding chamber of the present invention; Figure 2 It is a structural schematic diagram of the overlapped connection between the bearing frame and the pipe fitting of the present invention; Figure 3 It is a structural schematic diagram of the linkage unit 1, the linkage unit 2 and the regulating unit on the carrier frame of the present invention; Figure 4 for Figure 3 A partial enlarged view of the linkage unit at A in the middle; Figure 5 for Figure 4 A partial enlarged view of the position D in the middle (sliding member 1 and locking pin 1); Figure 6 for Figure 4 A partial enlarged view of the position E in the middle (sliding member 2 and locking pin 2); Figure 7 for Figure 3 A partial enlarged view of the linkage unit 2 at B in the middle; Figure 8 for Figure 3 A partial enlarged view of the (thrusting member) at C in the middle; Fig. 9 It is a schematic diagram of the overall structure of the present invention; In the figure: 1, main body, 2, molding chamber, 3, cover, 4, carrier, 5, opening groove, 6, sliding member 1, 7, sliding member 2, 8, locking pin 1, 9, locking pin 2, 10, spring 1, 11, spring 2, 12, spring 3, 13, spring 4, 14, swing member 1, 15, slide slot 1, 16, slide slot 2, 17, swing member 2, 18, slide slot 3, 19, slide slot 4, 20, trigger member, 21, spring 5, 22, sliding member 3, 23, connecting rod 1, 24, limiting ring, 25, swing member 3, 26, slide slot 5, 27, slide slot 6, 28, bracket, 29, positioning buckle, 30, positioning column. DETAILED DESCRIPTION
[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.
[0022] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0023] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0025] Embodiment 1, refer to Figure 1 to Figure 9 , which is the first embodiment of the present invention, provides a polytetrafluoroethylene isostatic pressing device.
[0026] In this embodiment, the isostatic pressing device includes a main body 1, a cover 3, a carrier 4 and a sliding lock unit, wherein the sliding lock unit includes a sliding member 1 6 and a sliding member 2 7; the sliding lock unit also includes a locking pin 1 8, a locking pin 2 9, a spring 10, a spring 2 11, a spring 3 12 and a spring 4 13; the carrier 4 includes an upper and lower double-layer plate combination structure, and the pipe fitting is placed vertically on the carrier 4, the upper end of the pipe fitting is located on the upper side of the upper plate, and the lower end of the pipe fitting is located on the lower side of the lower plate, and the opening groove 5 is a long U-shape. The sliding direction of the pipe fitting in the opening groove 5 is perpendicular to the sliding direction of the sliding member 1 6 and the sliding member 2 7.
[0027] Before placing the pipe fitting, apply external force to separate the lock pin 8 from the lock hole 1, and the spring 10 from the compression state, while separating the lock pin 2 9 from the lock hole 2, and the spring 2 11 from the compression state; the spring 3 12 is in a naturally extended state, and the end of the sliding member 6 away from the spring 3 12 extends into the area where the opening groove 5 is located; the spring 4 13 is in a naturally extended state, and the end of the sliding member 2 7 away from the spring 4 13 extends into the area where the opening groove 5 is located.
[0028] When placing the pipe fitting, align the middle straight tube section of the pipe fitting with the opening of the open groove 5, and then slide it toward the innermost side close to the open groove 5. The middle straight tube section of the pipe fitting first comes into compression contact with the sliding member 2 7, and finally comes into compression contact with the sliding member 1 6. The sliding directions of the sliding member 1 6 and the sliding member 2 7 are not parallel to the sliding direction of the pipe fitting in the open groove 5. When the pipe fitting comes into compression contact with the sliding member 2 7, with the help of the extrusion of the pipe fitting, the sliding member 2 7 slides in the direction away from the open groove 5 and squeezes the spring 4 13. The spring 4 13 is forced to shrink and accumulate elastic force. Similarly, when the pipe fitting comes into compression contact with the sliding member 1 6, with the help of the extrusion of the pipe fitting, the sliding member 1 6 slides in the direction away from the open groove 5 and squeezes the spring 3 12. The spring 3 12 is forced to shrink and accumulate elastic force. Finally, the pipe fitting stays at the innermost side of the open groove 5, and at this time, the sliding member 1 6 and the sliding member 2 7 are respectively located on both sides of the pipe fitting.
[0029] At this time, the applied external force is removed, the spring 10 stretches and pushes the lock pin 1 8 to insert into the lock hole 1, and the spring 2 11 stretches and pushes the lock pin 2 9 to insert into the lock hole 2, completing the fixing of the slide 1 6 and the slide 2 7. With the help of the sliding lock units that are distributed in sequence, several pipes can be fixed in the same open slot 5. At the same time, the support frame 4 is provided with several open slots 5, and the pipes in the adjacent open slots 5 are staggered with each other, which increases the storage capacity of the pipes on the support frame 4, increases the finished product quantity of the single forming operation of the isostatic pressing forming device, and improves the overall operation efficiency. At the same time, it can avoid contact, collision, and bump between adjacent pipes on the support frame 4, avoid the problem of internal hidden cracks and cracks after the lining is sintered, and improve the qualified rate of the product. At the same time, with the help of the support frame 4, it is convenient for the pipes to be transported in large quantities and high-pressure forming operations.
[0030] Example 2, refer to Figure 1 to Figure 9 , which is the second embodiment of the present invention. On the basis of the embodiment one, this embodiment further adds a linkage unit one, a linkage unit two and a regulating unit, wherein the linkage unit one includes a swinging member one 14, a sliding column one and a sliding column two; the linkage unit two includes a swinging member two 17, a sliding column three, a sliding column four, a trigger member 20 and a spring five 21; the regulating unit includes a sliding member three 22, a connecting rod one 23, a limiting ring 24, a swinging member three 25, a sliding column five and a sliding column six.
[0031] When in use, when only two pipes are placed in a single open slot 5, only linkage unit 1 is needed. When three or more pipes are placed in a single open slot 5, linkage unit 2 and a control unit need to be added on the basis of linkage unit 1. In this embodiment, four pipes are placed in the first open slot 5 as an example for description. It involves four sliding lock units, one linkage unit 1, two linkage units 2 and two control units; one linkage unit 1 is set between the first and second sliding lock units; one linkage unit 2 and a control unit are set between the second and third sliding lock units; one linkage unit 2 and a control unit are set between the third and fourth sliding lock units.
[0032] A propulsion member is provided on the carrier 4 so as to slide and rotate on one side of the sliding member 3 22, and a stop pin is provided on the propulsion member. A tray is provided on one side of the propulsion member, and the tray has a plurality of slots. After the propulsion member rotates, the stop pin is engaged in one of the slots; each of the four sliding lock units has a limit ring 24, and also has four connecting rods 1 23; the sliding direction from the innermost side of the opening slot 5 to the outside is defined as the first direction, and the four limit rings 24 are respectively ring 1, ring 2, ring 3, and ring 4, and the slots along the first direction are respectively slot 1, slot 2, slot 3, slot 4, and slot 5; when the stop pin is engaged in slot 5, the four connecting rods 1 23 do not come into extrusion contact with any of the limit rings 24. ; When the stop pin is connected to slot four, one of the connecting rods 1 23 is in compression contact with ring four, and the other three connecting rods 1 23 are not in compression contact with the limit ring 24; when the stop pin is connected to slot three, two of the connecting rods 1 23 are in compression contact with ring three and ring four respectively, and the other two connecting rods 1 23 are not in compression contact with the limit ring 24; when the stop pin is connected to slot two, three of the connecting rods 1 23 are in compression contact with ring two, ring three and ring four respectively, and the other one connecting rod 1 23 is not in compression contact with the limit ring 24; when the stop pin is connected to slot one, four connecting rods 1 23 are in compression contact with ring one, ring two, ring three and ring four respectively. The fourth lock pin 2 9 has a separate external force control system and power source, preferably a motor that can provide linear driving force.
[0033] When placing the pipe fitting, start a separate external force control system and power source to separate the fourth locking pin 29 from the fourth locking hole 2; then, apply external force to drive the propulsion member to slide in the direction close to the sliding member 3 22, and the propulsion member and the sliding member 3 22 are in compression contact and push the sliding member 3 22 to slide. When the stop pin is aligned with the groove 1, rotate the stop pin to insert the stop pin into the groove 1; at this time, the four connecting rods 1 23 are in compression contact with the four limiting rings 24 respectively; when the sliding member 3 22 slides, the sliding member 3 22 will drive the four connecting rods 1 23, the four limiting rings 24, and the four locking pins 1 8 to slide at the same time, so that the locking pin 1 8 is separated from the lock hole 1; at the same time, the sliding of the sliding member 3 22 will also drive the sliding column 6 to slide in the sliding groove 6 27, and then drive the swinging member 3 25 to start swinging, and with the help of the swing The sliding groove five 26 on the part three 25 and the sliding column five on the locking pin two 9 finally drive the first three locking pins two 9 to separate from the lock hole two; at this time, the spring one 10 and the spring two 11 are in a compressed state, the spring three 12 and the spring four 13 are in a naturally extended state, the ends of the four sliding parts two 7 and the first sliding part one 6 are located in the open groove 5 area, and the ends of the remaining three sliding parts one 6 are located on one side of the open groove 5; then, rotate the stop pin and slide the pusher until the stop pin is aligned with the groove two, and the stop pin is stuck in the groove two; looking along the first direction, the first lock pin one 8 is in compression contact with the first sliding part one 6, and the first connecting rod one 23 is separated from the ring one; the remaining three lock pins one 8 are in a separated state from the sliding part one 6, and the three connecting rods one 23 are in a compression contact state with the ring two, ring three, and ring four respectively.
[0034] Then, take the first pipe fitting and align it with the open groove 5, push the first pipe fitting in the direction opposite to the first direction, and the first pipe fitting is pressed and contacted with the sliding member 2 7 and the sliding member 1 6 in turn, until the first pipe fitting is pressed and contacted with the first sliding member 1 6. Under the extrusion of the first sliding member 1 6, the first sliding member 1 6 slides in the direction of the extrusion spring 3 12 until the locking pin 1 8 is aligned with the locking hole. At this time, the first spring 10 stretches and releases the accumulated elastic force, and the locking pin 1 8 is inserted into the locking hole 1. At the same time, with the help of the buffering of the spring 3 12, the first pipe fitting is prevented from being pressed and contacted with the open groove. 5, a hard collision occurs on the side wall; at this time, the first sliding member 6 is fixed; the first pipe can no longer slide; the first sliding member 2 7 is kept in a squeeze contact state with the first pipe under the action of the first spring 4 13; when the first sliding member 6 is away from the opening groove 5, the sliding member 6 drives the swing member 14 to rotate through the mutually coordinated sliding column 1 and the sliding groove 15, and further pushes the second sliding member 6 to slide in the direction close to the slot with the help of the mutually coordinated sliding groove 2 16 and the sliding column 2, until the end of the second sliding member 6 extends into the area of the opening groove 5.
[0035] When the second sliding member 16 slides, it will synchronously drive the trigger member 20 and the spring 5 21 in the first linkage unit 2 to slide in the same direction, and the end of the trigger member 20 extends into the area of the opening groove 5; then, rotate the stop pin and slide the pusher until the stop pin is aligned with the groove 3, and the stop pin is stuck in the groove 3; looking from the first direction, the first lock pin 18 is inserted into the first lock hole 1, and the first connecting rod 123 is separated from the ring 1; the second lock pin 18 is squeezed and contacted with the second sliding member 16, and the second connecting rod 123 is separated from the ring 2; the remaining two lock pins 18 are separated from the sliding member 16, and the remaining two connecting rods 123 are respectively in a squeeze contact state with the ring 3 and the ring 4. At this time, the first lock pin 29 is inserted into the first lock hole 2 under the action of the first spring 211.
[0036] Then, take the second pipe fitting and align it with the opening groove 5 and push the second pipe fitting to slide in the opening groove 5 until the second pipe fitting is squeezed and contacted with the first triggering member 20, and the first triggering member 20 squeezes the first spring 5 21, and at the same time, the swinging member 2 17 is driven to rotate with the help of the sliding column 3 and the sliding groove 3 18 that cooperate with each other, and then the third sliding member 1 6 is pushed to slide in the direction close to the opening groove 5 with the help of the sliding groove 4 19 and the sliding column 4 that cooperate with each other; until the second locking pin 1 8 is aligned with the second locking hole 1, the second spring 10 stretches and releases the accumulated elastic force, so that the first locking pin 1 8 is locked. The two locking pins 8 are inserted into the second locking hole 1; the second pipe fitting is limited, and the second sliding member 27 maintains an extruded contact state with the second pipe fitting under the action of the second spring 4 13; the second pipe fitting is initially fixed; similarly, the first trigger member 20 slides in the direction away from the opening groove 5, and with the help of the mutually cooperating sliding column 3 and sliding groove 3 18, swinging member 2 17, sliding groove 4 19 and sliding column 4, the third sliding member 6 is driven to slide in the direction close to the opening groove 5 until the end of the third sliding member 6 extends into the area of the opening groove 5.
[0037] Then adjust the stop pin so that it is stuck in groove four, repeat the operation process of the second sliding piece 6, complete the preliminary fixation of the third pipe fitting, and at the same time, the end of the fourth sliding piece 6 extends into the open groove 5 area; at this time, the second lock pin 2 9 is inserted into the second lock hole 2 under the action of the second spring 2 11.
[0038] Then adjust the retaining pin so that it is inserted into the groove 5. When viewed from the first direction, the first lock pin 8 is inserted into the first lock hole 1; the second lock pin 8 is inserted into the second lock hole 1; the third lock pin 8 is inserted into the third lock hole 1; the first connecting rod 1 23 is separated from the ring 1; the second connecting rod 1 23 is separated from the ring 2; the third connecting rod 1 23 is separated from the ring 3; the fourth lock pin 8 is pressed into contact with the fourth sliding member 1 6, and the fourth lock pin 8 is separated from the fourth lock hole 1. At this time, the third lock pin 2 9 is inserted into the third lock hole 2 under the action of the third spring 2 11.
[0039] At this time, the fourth pipe is inserted, and after the fourth pipe is squeezed and contacted with the fourth sliding member 1 6, the fourth pipe stops sliding, and at the same time, the fourth sliding member 2 7 is squeezed and contacted with the fourth pipe under the action of the spring 4 13, and then the stop pin is adjusted to separate the stop pin from the slot. At this time, the external power source is removed, and the fourth locking pin 2 9 is inserted into the fourth locking hole 2 under the action of the fourth spring 2 11. The four pipes are fixed, and at this time, the four pipes are spaced well apart and will not collide. When the hoisting carrier 4 enters and leaves the molding chamber 2, it can also ensure that the pipes will not contact each other, avoiding collisions between adjacent pipes, which would cause hidden cracks and cracks in the liner after sintering.
[0040] At the same time, the linkage unit 1, the linkage unit 2 and the control unit can effectively ensure that the pipes are connected in sequence, and the pipes in the same opening groove 5 will not collide. When the pipe needs to be removed, adjust the stop pin so that it is stuck in slot one, start the external independent power source, separate the locking pin 1 8 from the locking hole 1, separate the locking pin 2 9 from the locking hole 2, and gradually push the pipe out along the first direction.
[0041] Example 3, refer to Figure 1~Figure 3 , which is the third embodiment of the present invention. On the basis of the first embodiment, this embodiment further adds a bracket 28, a positioning buckle 29 and a positioning column 30; when in use, open the cover 3, lift the support frame 4 with the pipe fittings placed into the molding chamber 2, and place the positioning column 30 in alignment with the positioning buckle 29 to ensure that the support frame 4 is placed stably and firmly; at the same time, the support frame 4 is suspended in the air with the help of the bracket 28 to ensure that high-pressure water can enter the inner mold from both ends of the pipe fitting, thereby completing the high-pressure molding of the liner; after the liner is molded, the suspension of the bracket 28 is conducive to the separation of the pipe fittings and water.
[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.
Claims
1. A polytetrafluoroethylene isostatic pressing device, characterized in that: include: A main body (1) having a molding chamber (2); A sealing cover (3) is detachably arranged on the main body (1) and is used to seal the molding chamber (2) or cancel the sealing; A carrier frame (4) is detachably arranged in the molding chamber (2) and has an open groove (5), wherein the open groove (5) is used to place the pipe fitting; A sliding lock unit is used to fix the pipe fitting, and the sliding lock unit comprises: A sliding member (6) is slidably arranged on the support frame (4), and after sliding, the sliding member (6) contacts or cancels the contact with the pipe; The second sliding member (7) is slidably arranged on the support frame (4); after sliding, the second sliding member (7) contacts or cancels the contact with the pipe; the first sliding member (6) and the second sliding member (7) are respectively located on two sides of the pipe.
2. The polytetrafluoroethylene isostatic pressing device according to claim 1, characterized in that: The sliding member 1 (6) has a locking hole 1, the sliding member 2 (7) has a locking hole 2, and the sliding locking unit further comprises: A lock pin 1 (8) is slidably arranged on the carrier frame (4), and the lock pin 1 (8) is inserted into the lock hole 1 or cancels the insertion after sliding; The second lock pin (9) is slidably arranged on the support frame (4), and the second lock pin (9) is inserted into the second lock hole or cancels the insertion after sliding.
3. The polytetrafluoroethylene isostatic pressing device according to claim 2, characterized in that: The sliding lock unit also includes: A spring 1 (10), one end of which acts on the support frame (4) and the other end of which acts on the lock pin 1 (8); Spring 2 (11) has one end acting on the support frame (4) and the other end acting on the locking pin 2 (9).
4. The polytetrafluoroethylene isostatic pressing device according to claim 3, characterized in that: The sliding lock unit also includes: A spring three (12), one end of which acts on the support frame (4) and the other end of which acts on the sliding member one (6); Spring four (13) has one end acting on the support frame (4) and the other end acting on the sliding member two (7).
5. The polytetrafluoroethylene isostatic pressing device according to claim 4, characterized in that: There are a plurality of sliding lock units, the first sliding lock unit is located at the end of the opening groove (5) closest to the opening, and the remaining sliding lock units are distributed in sequence at intervals.
6. The polytetrafluoroethylene isostatic pressing device according to claim 5, characterized in that: It also includes a linkage unit 1, which is used to connect the first sliding lock unit and the sliding lock unit adjacent to the first sliding lock unit, and the linkage unit 1 includes: A swinging member (14) is swingably disposed on the support frame (4), wherein the swinging member (14) has a first slide groove (15) and a second slide groove (16); A sliding column 1, slidably disposed in the sliding groove 1 (15) and fixedly connected to the sliding member 1 (6) of the first sliding lock unit; The second sliding column is slidably disposed in the second sliding groove (16) and is fixedly connected to the first sliding member (6) of the second sliding lock unit.
7. The polytetrafluoroethylene isostatic pressing device according to claim 6, characterized in that: It also includes a linkage unit 2, starting from the second sliding lock unit, the linkage unit 2 is arranged between the front and rear adjacent sliding lock units, and the linkage unit 2 includes: A second swinging member (17) is swingably disposed on the support frame (4), and the second swinging member (17) has a third slide groove (18) and a fourth slide groove (19); A trigger member (20) is slidably disposed on the sliding member 1 (6) of the previous sliding lock unit, and the trigger member (20) contacts or cancels the contact with the pipe after sliding; A sliding column three, slidably disposed in the sliding groove three (18) and fixedly connected to the trigger member (20); A sliding column four, slidably disposed in the sliding groove four (19) and fixedly connected to the sliding member one (6) of the subsequent sliding lock unit; Spring five (21) has one end acting on the trigger member (20) and the other end acting on the sliding member one (6) of the previous sliding lock unit.
8. The polytetrafluoroethylene isostatic pressing device according to claim 7, characterized in that: It also includes a regulating unit for adjusting the sliding of the locking pin 1 (8) and the locking pin 2 (9), and the regulating unit includes: A sliding member (22) is slidably arranged relative to the supporting frame (4); A connecting rod 1 (23) is arranged on the sliding member 3 (22) and is slidably arranged on the locking pin 1 (8); A limit ring (24) is arranged on the locking pin 1 (8), and the connecting rod 1 (23) contacts or cancels the contact with the limit ring (24) after sliding. A third swinging member (25) is swingably disposed on the support frame (4), and the second swinging member (17) has a fifth slide groove (26) and a sixth slide groove (27); A sliding column 5, slidably disposed in the sliding groove 5 (26) and fixedly connected to the locking pin 2 (9); The sliding column six is slidably arranged in the sliding groove six (27) and is fixedly connected to the sliding member three (22).
9. The polytetrafluoroethylene isostatic pressing device according to claim 1, characterized in that: Also includes: A bracket (28) is arranged in the molding chamber (2) and is used to support the supporting frame (4).
10. The polytetrafluoroethylene isostatic pressing device according to claim 9, characterized in that: Also includes: A positioning buckle (29) is arranged on the bracket (28); A positioning column (30) is arranged on the supporting frame (4) and is engaged with the positioning buckle (29).