Multi-station joint assembling machine for nylon tube production

Abstract

The invention relates to the technical field of nylon tube crimping, in particular to a multi-station joint assembling machine for nylon tube production. Comprising a workbench, the workbench is fixedly connected with an electric sliding rail and symmetrically-distributed fixing frames, the electric sliding rail is fixedly connected with an electric telescopic rod through an electric sliding block, the fixing frames are fixedly connected with hydraulic push rods, the telescopic ends of the hydraulic push rods are fixedly connected with upper extrusion blocks, and the fixing frames are slidably connected with symmetrically-distributed side extrusion blocks. A first elastic piece is fixedly connected between each side extrusion block and the fixing frame, the upper extrusion blocks are used for extruding the adjacent side extrusion blocks to enable the side extrusion blocks to move, and the fixing frame, the upper extrusion blocks on the fixing frame and the side extrusion blocks on the fixing frame are jointly provided with blocking strips which are distributed at intervals in the circumferential direction. The blocking strips which are distributed at intervals are arranged on the outer side of the pipe body, the blocking strips limit and fix the pipe body through friction, and then the probability that the pipe body shrinks and protrudes in the reaming process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of nylon tube crimping, in particular to a multi-station joint assembly machine for nylon tube production. Background Art

[0002] When producing nylon tubes, the tube body and metal joints are usually produced separately, and then the joints are installed on the tube body using a joint assembly machine. During use, the existing joint assembly machine needs to first use a fixing fixture to clamp the tube body, then use a reamer to expand the tube body, and finally crimp the joint onto the tube body. When using the existing joint assembly machine to install the joint for a tube body made of soft material, due to insufficient rigidity of the tube body, the tube body is squeezed by the reamer during the reaming process, and shrinks and deforms due to the squeezing force, resulting in wrinkles or bulges on the tube body, which not only prevents the reamer from uniformly expanding the aperture of the tube body, but also causes alignment deviations between the tube body and the joint, resulting in a reduced success rate of the joint installation. Because the tube body is subjected to uneven expansion force, local stress concentration leads to an increased probability of tube rupture, further affecting the quality of the finished nylon tube crimping product. Summary of the invention

[0003] In order to overcome the disadvantage that when the existing joint assembly machine is used to expand the hole of a soft pipe body, the pipe body is squeezed by the expander and shrinks and deforms in the force direction, resulting in wrinkles or bulges on the rear side of the pipe body, which affects the success rate of joint installation, the present invention provides a multi-station joint assembly machine for nylon pipe production.

[0004] The technical solution of the present invention is: a multi-station joint assembly machine for nylon tube production, comprising a workbench, the workbench is fixedly connected with an electric slide rail and a symmetrically distributed fixed frame, the electric slide rail is fixedly connected with an electric telescopic rod through an electric slider, the telescopic end of the electric telescopic rod is fixedly connected with a fixed head, the fixed head is fixedly connected with a hole expansion member, the fixed frame is fixedly connected with a hydraulic push rod, the telescopic end of the hydraulic push rod is fixedly connected with an upper extrusion block, the fixed frame is slidably connected with symmetrically distributed side extrusion blocks, a first elastic member is fixedly connected between the side extrusion blocks and the fixed frame, the upper extrusion block is used to squeeze the adjacent side extrusion blocks to move the side extrusion blocks, the fixed frame and the upper extrusion blocks thereon and the side extrusion blocks thereon are jointly provided with circumferentially spaced blocking strips, the blocking strips are elastic and are used to suppress the bulge of the tube body, the fixed frame is provided with a detection mechanism for detecting whether the tube body is slipping, and the workbench is provided with a crimping mechanism for inserting the joint into the tube body.

[0005] As a preferred technical solution of the present invention, the blocking bar is fixedly connected to a fixed plate, the fixed frame, the upper extrusion block and the side extrusion block are respectively fixedly connected to adjacent fixed plates, and second elastic members distributed at intervals are fixedly connected between the blocking bar and the fixed plate.

[0006] As a preferred technical solution of the present invention, the second elastic member is an elastic sheet, and the second elastic member is used to limit the twisting of the adjacent blocking bars.

[0007] As a preferred technical solution of the present invention, the elastic coefficient of the second elastic member on the same fixed plate gradually increases from the direction close to the upper extrusion block to the direction away from the upper extrusion block.

[0008] As a preferred technical solution of the present invention, the side extrusion block is fixedly connected with an elastic plate, and the fixing frame, the upper extrusion block and the symmetrically distributed elastic plates are jointly spliced ​​into a complete cylinder.

[0009] As a preferred technical solution of the present invention, the detection mechanism includes a lower sliding frame, the lower sliding frame is fixedly connected to the fixed frame, the lower sliding frame is slidably connected to the lower friction block, and a third elastic member is fixedly connected between the two, the upper extrusion block is slidably connected to the upper sliding frame, and a fourth elastic member is fixedly connected between the two, the upper sliding frame is slidably connected to the upper friction block, and a fifth elastic member is fixedly connected between the two, and the lower sliding frame is fixedly connected to an electronic rangefinder, and the electronic rangefinder is used to detect the moving distance of the lower friction block.

[0010] As a preferred technical solution of the present invention, the crimping mechanism includes a symmetrically distributed first sliding frame, which is symmetrically distributed and is slidably connected to the workbench. A sixth elastic member is fixedly connected between the first sliding frame and the workbench. The first sliding frame is limitedly and slidably connected to the second sliding frame, and a seventh elastic member is fixedly connected between the two. The second sliding frame is fixedly connected to a placement frame, which is used to place the joint, and the fixed head is provided with a connecting component for alternately driving the symmetrical second sliding frame to move.

[0011] As a preferred technical solution of the present invention, the connecting assembly includes symmetrically distributed limit blocks, which are all slidably connected to the fixed head, an eighth elastic member is fixed between the limit block and the fixed head, and a limit hole is provided on the side of the second sliding frame close to the fixed head. When the limit block is located in an adjacent limit hole, the adjacent second sliding frame is limited.

[0012] As a preferred technical solution of the present invention, the placement rack is fixedly connected with an elastic telescopic rod, the telescopic end of the elastic telescopic rod is fixedly connected with a stopper, and the stopper is used to limit the joint.

[0013] As a preferred technical solution of the present invention, it also includes symmetrically distributed positioning members, the number of which is the same as the number of the fixing frames, the positioning members are slidably connected to adjacent fixing frames, and a ninth elastic member is fixedly connected therebetween, the positioning members are used to position the end of the tube body, the upper extrusion block is fixedly connected to an extrusion plate, and the extrusion plate is used to squeeze the positioning members to separate the positioning members from contact with the end of the tube body.

[0014] The beneficial effects of the present invention include at least the following: the present invention sets spaced barrier strips on the outside of the tube body, and the barrier strips limit and fix the tube body through friction, thereby reducing the probability of the tube body shrinking and bulging during hole expansion, increasing the uniformity of force on the tube body during hole expansion, improving the success rate of the hole expansion process, and reducing the probability of alignment deviation between the tube body and the joint.

[0015] The present invention detects the moving state of the tube body by means of the upper friction block and the lower friction block, timely discovers the sliding of the tube body due to being squeezed, and timely increases the squeezing and fixing force on the tube body, while reducing the probability of the tube body being compressed and deformed when excessive squeezing force is initially applied.

[0016] The present invention positions the tube body by using the positioning piece, thus simplifying the installation process of the workers, and during the process of assembling the nylon tube, the positioning piece is moved away, thus preventing the positioning piece from affecting the assembly process of the nylon tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the electric slide rail, the electric telescopic rod and the fixed head of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the fixing frame, the hydraulic push rod and the upper extrusion block of the present invention; Figure 4 is a cross-sectional view of a fixing frame of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the upper extrusion block and the side extrusion block of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the blocking strip, the fixing plate and the second elastic member of the present invention; Figure 7 is a cross-sectional view of the fixing frame and the side extrusion block of the present invention; Figure 8 An exploded view of the side extrusion block and the elastic plate of the present invention; Fig. 9 A cross-sectional view of an upper sliding frame of the present invention; Fig.10 A cross-sectional view of the fixed head and the second sliding frame of the present invention; Fig.11 It is a cross-sectional view of the placement rack of the present invention.

[0018] Wherein: 1-workbench, 2-electric slide rail, 201-electric slider, 3-electric telescopic rod, 4-fixed head, 5-expanding member, 6-fixed frame, 7-hydraulic push rod, 8-upper extrusion block, 9-side extrusion block, 91-elastic plate, 92-first elastic member, 10-blocking strip, 11-fixed plate, 12-second elastic member, 13-lower sliding frame, 14-lower friction block, 141-third elastic member, 15-upper sliding frame, 151-fourth elastic member, 16-upper friction block, 161-fifth elastic member, 17-electronic rangefinder, 18-first sliding frame, 181-sixth elastic member, 182-seventh elastic member, 19-second sliding frame, 191-limiting hole, 20-placing frame, 21-elastic telescopic rod, 22-block, 23-limiting block, 231-eighth elastic member, 24-positioning member, 241-ninth elastic member, 25-extrusion plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0020] A multi-station joint assembly machine for nylon tube production, such as Figure 1-Figure 6 As shown, it includes a workbench 1, the workbench 1 is fixedly connected to an electric slide rail 2 and a symmetrically distributed fixed frame 6, the electric slide rail 2 is fixedly connected to an electric telescopic rod 3 through an electric slider 201, the telescopic end of the electric telescopic rod 3 is fixedly connected to a fixed head 4, the fixed head 4 is fixedly connected to a hole expansion member 5, the fixed frame 6 is fixedly connected to a hydraulic push rod 7, the telescopic end of the hydraulic push rod 7 is fixedly connected to an upper extrusion block 8, the fixed frame 6 is slidably connected to symmetrically distributed side extrusion blocks 9, a first elastic member 92 is fixedly connected between the side extrusion blocks 9 and the fixed frame 6, the upper extrusion block 8 is used to squeeze the adjacent side extrusion blocks 9 to move the side extrusion blocks 9, the fixed frame 6 and the upper extrusion blocks 8 and the side extrusion blocks 9 thereon are jointly provided with circumferentially spaced blocking strips 10, the blocking strips 10 are elastic and used to suppress the bulging of the tube body, the fixed frame 6 is provided with a detection mechanism for detecting whether the tube body is slipping, and the workbench 1 is provided with a crimping mechanism for inserting the joint into the tube body.

[0021] In the above scheme, a control terminal is installed on the workbench 1, and the electric slide rail 2, the electric telescopic rod 3, the hydraulic push rod 7 and the detection mechanism are all electrically connected to the control terminal; the reamer 5 is an existing reamer structure, and the right side of the reamer 5 is a conical extrusion head, and the reamer 5 expands the diameter of the tube body by extruding the tube body; the first elastic member 92 is a spring; the number of fixed frames 6, the number of electric slide rails 2 and the number of reamer 5 can be increased or decreased according to actual conditions. In this scheme, two fixed frames 6 are provided, and a single fixed frame 6 is a separate workstation. The two fixed frames 6 are respectively located on the front and rear sides of the reamer 5, and the upper extrusion block 8 and the fixed frame 6 are used together to clamp the tube body, and the two side extrusion blocks 9 are used to limit the front and rear sides of the tube body. When the tube body is subjected to the extrusion force of the upper extrusion block 8 and the fixed frame 6 in the upper and lower directions, the deformation range of the tube body is limited (to prevent the tube body from being squeezed downward), and the extrusion block 8. The fixing frame 6 and the two adjacent side extrusion blocks 9 jointly fix the tube body circumferentially; the side extrusion block 9 is provided with an inclined surface, and the upper extrusion block 8 drives the side extrusion block 9 to move by extruding the inclined surface of the side extrusion block 9; the number and shape of adjacent blocking strips 10 on the fixing frame 6 can be adjusted as needed. In this scheme, two blocking strips 10 are fixedly connected to the lower side of the fixing frame 6 and the upper side of the upper extrusion block 8, and each side extrusion block 9 is fixedly connected to a blocking strip 10; the blocking strip 10 is composed of a rubber strip and an elastic sheet. The rubber strip is located on the inner side of the elastic sheet and is used to increase the friction between the blocking strip 10 and the tube body. The elastic sheet is used to promote the reset of the rubber strip. By arranging the blocking strips 10 distributed circumferentially at intervals on the outer side of the tube body, the probability of the tube body shrinking to the right and bulging outward when the hole is expanded by the expansion member 5 is reduced; the initial state of the telescopic end of the hydraulic push rod 7 is a contracted state (such as Figure 7 as shown).

[0022] As a preferred technical solution of the present invention, Figure 4-Figure 6 As shown, the blocking strip 10 is fixedly connected to the fixing plate 11 , the fixing frame 6 , the upper extrusion block 8 and the side extrusion block 9 are respectively fixedly connected to the adjacent fixing plates 11 , and second elastic members 12 are fixedly connected between the blocking strip 10 and the fixing plate 11 at intervals.

[0023] As a preferred technical solution of the present invention, Figure 4-Figure 6 As shown, the second elastic member 12 is an elastic sheet, and the second elastic member 12 is used to limit the twisting of the adjacent blocking strips 10 .

[0024] As a preferred technical solution of the present invention, Figure 6 As shown, the elastic coefficient of the second elastic member 12 on the same fixing plate 11 gradually increases from the direction close to the upper extrusion block 8 to the direction away from the upper extrusion block 8 .

[0025] In the above scheme, the fixing plate 11 is made of cemented carbide, and the second elastic member 12 is an elastic sheet. The second elastic member 12 can be bent and deformed in the left and right directions, but cannot be bent and deformed in the circumferential direction. The elastic coefficient of the second elastic member 12 on the same fixing plate 11 gradually increases from right to left, and the elastic force of the second elastic member 12 on the left side is the strongest to compensate for the problem that the left side of the blocking bar 10 is most prone to deformation, thereby making the extrusion pressure of the blocking bar 10 at different positions to fix the tube body more uniform, thereby increasing the uniformity of the tube body when it expands and deforms.

[0026] As a preferred technical solution of the present invention, Figure 5 , Figure 7 and Figure 8 As shown, the side extrusion block 9 is fixedly connected with an elastic plate 91, and the fixing frame 6, the upper extrusion block 8 and the symmetrically distributed elastic plates 91 are spliced ​​together to form a complete cylinder.

[0027] In the above scheme, the elastic plate 91 is used to fill the gap between the adjacent side extrusion blocks 9 and the upper extrusion block 8, so as to facilitate the downward movement of the upper extrusion block 8, increase the extrusion force between the upper extrusion block 8 and the tube body, and prevent the tube body from deforming toward the gap between the side extrusion block 9 and the upper extrusion block 8; the diameter of the cylinder formed by all the blocking bars 10 on the same fixing frame 6 is smaller than the diameter of the cylinder formed by the fixing frame 6, the upper extrusion block 8 and the two elastic plates 91, so as to ensure that all the blocking bars 10 are in close contact with the tube body.

[0028] As a preferred technical solution of the present invention, Figure 2 , Figure 8 and Fig. 9 As shown, the detection mechanism includes a lower sliding frame 13, the lower sliding frame 13 is fixed to the fixed frame 6, the lower sliding frame 13 is slidably connected to the lower friction block 14, and a third elastic member 141 is fixedly connected therebetween, the upper extrusion block 8 is slidably connected to the upper sliding frame 15, and a fourth elastic member 151 is fixedly connected therebetween, the upper sliding frame 15 is slidably connected to the upper friction block 16, and a fifth elastic member 161 is fixedly connected therebetween, and the lower sliding frame 13 is fixedly connected to an electronic rangefinder 17, which is used to detect the moving distance of the lower friction block 14.

[0029] In the above scheme, the electronic rangefinder 17 is electrically connected to the control terminal, the upper friction block 16 and the lower friction block 14 are used to clamp the tube body together, increase the friction between the upper friction block 16 and the lower friction block 14 and the tube body, and then increase the detection accuracy of the upper friction block 16 and the lower friction block 14; the electronic rangefinder 17 is an existing device, which can be a laser rangefinder; the third elastic member 141, the fourth elastic member 151 and the fifth elastic member 161 are all springs.

[0030] As a preferred technical solution of the present invention, Figure 2 , Figure 3 , Fig.10 and Fig.11 As shown, the crimping mechanism includes a symmetrically distributed first sliding frame 18, which are symmetrically distributed and are all slidably connected to the workbench 1, a sixth elastic member 181 is fixedly connected between the first sliding frame 18 and the workbench 1, the first sliding frame 18 is limitedly slidably connected to the second sliding frame 19, and a seventh elastic member 182 is fixedly connected between the two, the second sliding frame 19 is fixedly connected to a placement frame 20, the placement frame 20 is used to place the joint, and the fixed head 4 is provided with a connecting component for alternately driving the symmetrical second sliding frame 19 to move.

[0031] In the above scheme, the number of the first sliding frames 18 is the same as the number of the fixed frames 6. In this scheme, the number of the first sliding frames 18 is two. When the second sliding frame 19 slides to the extreme position away from the first sliding frame 18, the placement frame 20 on the second sliding frame 19 is just aligned with the tube body fixed on the fixed frame 6, so as to facilitate crimping the joint into the tube body; the sixth elastic member 181 and the seventh elastic member 182 are both tension springs.

[0032] As a preferred technical solution of the present invention, Figure 2 , Figure 3 and Fig.10 As shown, the connecting assembly includes symmetrically distributed limit blocks 23, which are all slidably connected to the fixed head 4, and an eighth elastic member 231 is fixedly connected between the limit blocks 23 and the fixed head 4. A limit hole 191 is provided on the side of the second sliding frame 19 close to the fixed head 4. When the limit block 23 is located in the adjacent limit hole 191, the adjacent second sliding frame 19 is limited.

[0033] In the above scheme, the front and rear directions of the limit block 23 are both provided with a right-facing inclined surface, and the shape of the limit hole 191 is the same as the shape of the limit block 23, so the limit block 23 can be inserted into or moved out of the adjacent limit block 23 during the forward and backward sliding process; the eighth elastic member 231 is a tension spring, and the elastic coefficient of the eighth elastic member 231 is greater than the elastic coefficient of the seventh elastic member 182, and the elastic coefficient of the eighth elastic member 231 is less than the elastic coefficient of the sixth elastic member 181.

[0034] The working principle of the above scheme is as follows: when the staff is ready to assemble the nylon tube, taking the case that the staff first installs the tube body on the front fixing frame 6, the staff places the tube body between the fixing frame 6 and the upper extrusion block 8 so that the left end of the tube body is located to the left of the left end of the blocking strip 10 (such as Figure 3As shown), the staff then controls the telescopic end of the hydraulic push rod 7 to extend downward through the control terminal, and the telescopic end of the hydraulic push rod 7 drives the upper extrusion block 8 to move downward, and the upper extrusion block 8 drives the upper sliding frame 15 and the upper friction block 16 to move downward together. When the upper extrusion block 8 moves to contact the inclined surfaces of the two adjacent side extrusion blocks 9, the upper extrusion block 8 continues to move downward, and by squeezing the inclined surfaces of the two adjacent side extrusion blocks 9, the two side extrusion blocks 9 are forced to move toward each other. The two side extrusion blocks 9 drive the upper elastic plates 91 to move to a position that fits the tube body, and the elastic plates 91 are automatically inserted into the gap between the tube body and the fixed frame 6 and the upper extrusion block 8. In the gap, when the two elastic plates 91 are in contact with the tube body, the upper extrusion block 8 passes through the inclined surfaces of the two side extrusion blocks 9 and limits the two side extrusion blocks 9. When the upper extrusion block 8 contacts the tube body, the tube body is synchronously inserted into the upper friction block 16 and the lower friction block 14. The upper friction block 16 and the lower friction block 14 clamp the tube body together. The control terminal monitors the pressure of the hydraulic oil in the hydraulic push rod 7 and finds out that the upper extrusion block 8 is squeezed and fitted with the tube body. Then the control terminal closes the hydraulic push rod 7, and the fixed frame 6, the upper extrusion block 8 and the two side extrusion blocks 9 clamp the tube body together. The six blocking bars 10 surround the tube body together and keep in contact with the tube body.

[0035] After the staff fixes the tube body between the fixing frame 6 and the upper extrusion block 8, the joint is inserted into the placement frame 20 on the front side. Then the staff starts the crimping program through the control terminal, and in the process of assembling the front nylon tube, the tube body is installed between the fixing frame 6 and the upper extrusion block 8 on the rear side, and the joint is placed on the placement frame 20 on the rear side, so that the control terminal can continuously perform the crimping work.

[0036] After the control terminal starts the crimping program, it first controls the electric slider 201 on the electric slide rail 2 to move forward. The electric slider 201 drives the electric telescopic rod 3, the fixed head 4 and the hole expanding member 5 thereon to move together. The limit block 23 on the front side of the fixed head 4 gradually contacts the second sliding frame 19. At this time, the second sliding frame 19 is in its extreme position forming the front side, and the second sliding frame 19 cannot move forward. As the limit block 23 continues to move, the limit block 23 is squeezed by the second sliding frame 19 and moves to the left. The eighth elastic member 231 stretches and accumulates force until the limit block 23 is aligned with the adjacent limit hole 191. The limit block 23 is inserted into the limit hole 191 under the action of the eighth elastic member 231. At this time, the hole expanding member 5 is just aligned with the tube body on the front fixed frame 6. The control terminal closes the electric slide rail 2 and starts the electric telescopic rod 3.

[0037] After the control terminal starts the electric telescopic rod 3, the telescopic end of the electric telescopic rod 3 drives the fixed head 4, the hole expanding member 5, the second sliding frame 19 and the first sliding frame 18 to move to the right together, the sixth elastic member 181 is stretched and stored, the hole expanding member 5 is gradually inserted into the tube body, and the tube body is gradually expanded. During the hole expanding process, because the tube body is subject to the friction and circumferential limitation of the surrounding blocking strips 10, it is difficult to shrink and deform to the right, so the probability of wrinkles or bulges in the tube body is reduced. Even if wrinkles or bulges occur in the tube body, it cannot break through the constraints of the surrounding blocking strips 10 to bend and bulge outward, thereby reducing the probability of alignment deviation between the tube body and the joint. When the tube body is gradually expanded from left to right, the expansion area of ​​the blocking strip 10 bends and deforms outward along with the adjacent tube body. At this time, the second elastic member 12 at the adjacent position bends and stores force, and the blocking strip 10 is limited by the second elastic member 12 and cannot be deformed. The tube body is limited by friction of the blocking strip 10 during expansion, and is also difficult to be torsional, which improves the uniformity of force on the tube body during hole expansion, thereby improving the success rate of the hole expansion process. When the hole expansion work is completed, the control terminal controls the telescopic end of the electric telescopic rod 3 to drive the fixed head 4 and the hole expansion member 5 to move to the left and reset, and the sixth elastic member 181 drives the second sliding frame 19 and the first sliding frame 18 to move and reset. At this time, the blocking strip 10 is driven by the second elastic member 12 to shrink the tube body, but because the tube body has been expanded and deformed, the tube body protrudes outward from the gap between two adjacent blocking strips 10. At this time, the diameter of the cylinder formed by the blocking strips 10 on the same fixed frame 6 is larger than the diameter of the rightmost end of the joint, so it will not affect the process of pressing the joint into the tube body. The control terminal then controls the electric slider 201 on the electric slide rail 2 to move backward and reset.

[0038] When the control terminal controls the electric slider 201 on the electric slide rail 2 to move and reset, the electric slider 201 drives the second sliding frame 19 on the front side to move backward together through the electric telescopic rod 3, the fixed head 4 and the front limit block 23, and the seventh elastic member 182 on the second sliding frame 19 is stretched and force is accumulated. When the electric slider 201 is reset to the initial position, the joint placed on the placement rack 20 on the second sliding frame 19 is just aligned with the tube body. Then the control terminal starts the electric telescopic rod 3 again, so that the telescopic end of the electric telescopic rod 3 extends to the right, and the telescopic end of the electric telescopic rod 3 drives the fixed head 4, the second sliding frame 19 and the placement rack 20 to move together, and the sixth elastic member 181 is stretched and force is accumulated to insert the joint into the tube body. At this time, the blocking strip 10 is mainly used to position the tube body through friction to ensure that the joint is smoothly inserted into the tube body to complete the crimping process. Then the control terminal controls the electric telescopic rod 3 to drive the adjacent parts to move and reset, and the sixth elastic member 181 drives the second sliding frame 19 and the placement rack 20 to move to the left and reset together.

[0039] In the above process, if the squeezing force of the fixing frame 6 and the upper squeezing block 8 on the tube body is insufficient (in order to prevent the tube body from being squeezed and deformed prematurely due to excessive squeezing force, it is usually necessary to limit the squeezing force applied to the tube body. Therefore, when processing tube bodies of different batches or materials, insufficient squeezing force may occur), the tube body may slide to the right relative to the fixing frame 6 and the upper squeezing block 8 when under pressure. At this time, the tube body drives the upper friction block 16 and the lower friction block 14 to slide together, and the third elastic member 141 and the fifth elastic member 161 are compressed and stored. The electronic rangefinder 17 detects that the lower friction block 14 has slipped. After the movement, the signal is transmitted to the control terminal, and the control terminal controls the telescopic end of the hydraulic push rod 7 to continue to extend slowly downward. Because the upper friction block 16 fits with the tube body, the upper friction block 16 and the upper sliding frame 15 will not continue to move downward, and the fourth elastic member 151 is compressed and stored to increase the squeezing force of the fixed frame 6 and the upper squeezing block 8 on the tube body until the tube body stops sliding. The control terminal closes the hydraulic push rod 7 and increases the distance that the electric telescopic rod 3 extends to the right in real time according to the distance that the lower friction block 14 slides to the right, ensuring that the tube body is expanded by a sufficient distance, so as to facilitate the subsequent smooth completion of the assembly process.

[0040] After the nylon tube on the front side is assembled, the staff has installed the tube body and joint on the rear side. At this time, the control terminal controls the electric slide rail 2, the electric telescopic rod 3 and other components to move backward according to the same principle as above, and completes the assembly process of the nylon tube on the rear side. When the electric slider 201 drives the fixed head 4 and the second sliding frame 19 on the front side to move backward together, the second sliding frame 19 on the front side moves to the limit position and cannot move. Therefore, the front limit block 23 is squeezed to the left by the adjacent limit hole 191, and the eighth elastic member 231 is stretched and stored. The fixed head 4 is disconnected from the second sliding frame 19 on the front side, and the second sliding frame 19 moves forward and resets under the drive of the seventh elastic member 182, and the front limit block 23 moves and resets under the drive of the eighth elastic member 231. Then the staff controls the terminal Control the hydraulic push rod 7 to drive the fixed frame 6 to move upward and reset, the side extrusion block 9 and the elastic plate 91 are moved and reset under the drive of the adjacent first elastic member 92, the upper sliding frame 15 is moved and reset under the action of the fourth elastic member 151, and the upper friction block 16 and the lower friction block 14 on the front side are moved and reset under the action of the third elastic member 141 and the fifth elastic member 161. The staff then removes the nylon tube on the front side and reinstalls the tube body between the front fixed frame 6 and the upper extrusion block 8, and places the joint on the front placement frame 20 to repeat the above process and continuously assemble the nylon tubes. When all the nylon tubes are assembled, the staff controls the electric slide rail 2, the electric telescopic rod 3 and the hydraulic push rod 7 to move and reset through the control terminal, and closes the electric slide rail 2, the electric telescopic rod 3 and the hydraulic push rod 7.

[0041] As a preferred technical solution of the present invention, Fig.11As shown, the placement rack 20 is fixedly connected with an elastic telescopic rod 21, and the telescopic end of the elastic telescopic rod 21 is fixedly connected with a stopper 22, and the stopper 22 is used to limit the joint.

[0042] In the above scheme, inclined surfaces are provided on both the left and right sides of the block 22, and the inclined surfaces on the front and rear sides of the block 22 are used to squeeze the joint. When the staff places the joint into the placement rack 20, the staff inserts the joint into the placement rack 20 from right to left, and the joint squeezes the block 22 and the telescopic end of the elastic telescopic rod 21, so that the telescopic end of the elastic telescopic rod 21 retracts and accumulates force. When the joint passes through the block 22, the block 22 extends under the elastic force of the elastic telescopic rod 21 to limit the joint and reduce the probability of shaking of the joint during use. When the control terminal inserts the joint into the tube body, the joint is fixed to the tube body, and the sixth elastic member 181 drives the second When the sliding frame 19 and the placement frame 20 move to the left and reset together, the stopper 22 applies a force to the joint to move to the left under the elastic force of the elastic telescopic rod 21, so as to detect whether the joint and the tube body are stably connected. When the joint and the tube body are stably connected, the stopper 22 and the telescopic end of the elastic telescopic rod 21 are pressed and move, and the telescopic end of the elastic telescopic rod 21 retracts and accumulates force. The joint passes through the stopper 22, and the stopper 22 moves and resets under the action of the elastic telescopic rod 21. When the joint and the tube body are not stably connected, the joint is subjected to a force to the left and gradually breaks away from the connection with the tube body. The staff removes and processes the joint and the tube body respectively, and then installs the next set of joints and tube bodies.

[0043] As a preferred technical solution of the present invention, Figure 3 , Figure 4 and Figure 7 As shown, it also includes symmetrically distributed positioning members 24, the number of which is the same as the number of fixing frames 6, the positioning members 24 are slidably connected to adjacent fixing frames 6, and a ninth elastic member 241 is fixedly connected therebetween, the positioning members 24 are used to position the end of the tube body, and the upper extrusion block 8 is fixedly connected to an extrusion plate 25, which is used to extrude the positioning members 24 to separate the positioning members 24 from contact with the end of the tube body.

[0044] In the above scheme, the positioning member 24 is used to block the tube body, so that the staff can control the position of the installed tube body; the ninth elastic member 241 is a tension spring; when the staff fixes the tube body, they only need to ensure that the end of the tube body is in contact with the positioning member 24 to ensure that the left end of the tube body is located on the left side of the left end of the blocking bar 10 (such as Figure 3As shown), the efficiency of the staff in fixing the pipe body is improved. When the staff starts the hydraulic push rod 7 through the control terminal, the telescopic end of the hydraulic push rod 7 drives the upper extrusion block 8 to clamp the pipe body, and the upper extrusion block 8 drives the extrusion plate 25 to move downward together. When the extrusion plate 25 contacts the positioning member 24, the extrusion plate 25 squeezes the positioning member 24 and moves downward together during the movement, and the positioning member 24 is no longer in contact with the pipe body, so as to avoid the positioning member 24 affecting the crimping process of the pipe body. When the nylon tube is assembled, the staff controls the hydraulic push rod 7 to reset through the control terminal. During the resetting process, the upper extrusion block 8 drives the extrusion plate 25 to reset upward together, and the extrusion plate 25 no longer squeezes the positioning member 24. The positioning member 24 moves upward and resets under the action of the ninth elastic member 241.

[0045] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A multi-station joint assembly machine for nylon tube production, characterized in that: The invention comprises a workbench (1), wherein the workbench (1) is fixedly connected to an electric slide rail (2) and a symmetrically distributed fixed frame (6), wherein the electric slide rail (2) is fixedly connected to an electric telescopic rod (3) via an electric slider (201), wherein the telescopic end of the electric telescopic rod (3) is fixedly connected to a fixed head (4), wherein the fixed head (4) is fixedly connected to a hole expansion member (5), wherein the fixed frame (6) is fixedly connected to a hydraulic push rod (7), wherein the telescopic end of the hydraulic push rod (7) is fixedly connected to an upper extrusion block (8), wherein the fixed frame (6) is slidably connected to symmetrically distributed side extrusion blocks (9), wherein the side extrusion blocks (9 ) and the fixing frame (6) are fixedly connected with a first elastic member (92); the upper extrusion block (8) is used to squeeze the adjacent side extrusion block (9) to move the side extrusion block (9); the fixing frame (6) and the upper extrusion block (8) thereon and the side extrusion block (9) thereon are jointly provided with circumferentially spaced blocking strips (10); the blocking strips (10) are elastic and are used to suppress the bulging of the tube body; the fixing frame (6) is provided with a detection mechanism for detecting whether the tube body is slipping; and the workbench (1) is provided with a crimping mechanism for inserting the joint into the tube body.

2. A multi-station joint assembly machine for nylon tube production according to claim 1, characterized in that: The blocking strip (10) is fixedly connected to a fixing plate (11); the fixing frame (6), the upper extrusion block (8) and the side extrusion block (9) are respectively fixedly connected to adjacent fixing plates (11); and second elastic members (12) are fixedly connected between the blocking strip (10) and the fixing plate (11) at intervals.

3. A multi-station joint assembly machine for nylon tube production according to claim 2, characterized in that: The second elastic member (12) is an elastic sheet, and the second elastic member (12) is used to limit the twisting of the adjacent blocking strip (10).

4. A multi-station joint assembly machine for nylon tube production according to claim 3, characterized in that: The elastic coefficient of the second elastic member (12) on the same fixed plate (11) gradually increases from a direction close to the upper extrusion block (8) to a direction away from the upper extrusion block (8).

5. The multi-station joint assembly machine for nylon tube production according to claim 2, characterized in that: The side extrusion block (9) is fixedly connected to an elastic plate (91), and the fixing frame (6), the upper extrusion block (8) and the symmetrically distributed elastic plates (91) are spliced ​​together to form a complete cylindrical shape.

6. A multi-station joint assembly machine for nylon tube production according to claim 5, characterized in that: The detection mechanism comprises a lower sliding frame (13), the lower sliding frame (13) being fixedly connected to the fixed frame (6), the lower sliding frame (13) being slidably connected to a lower friction block (14), and a third elastic member (141) being fixedly connected therebetween, the upper extrusion block (8) being slidably connected to an upper sliding frame (15), and a fourth elastic member (151) being fixedly connected therebetween, the upper sliding frame (15) being slidably connected to an upper friction block (16), and a fifth elastic member (161) being fixedly connected therebetween, and the lower sliding frame (13) being fixedly connected to an electronic distance meter (17), the electronic distance meter (17) being used to detect the moving distance of the lower friction block (14).

7. The multi-station joint assembly machine for nylon tube production according to claim 1, characterized in that: The crimping mechanism comprises symmetrically distributed first sliding frames (18), the symmetrically distributed first sliding frames (18) are all slidably connected to the workbench (1), a sixth elastic member (181) is fixedly connected between the first sliding frames (18) and the workbench (1), the first sliding frames (18) are limitedly slidably connected to the second sliding frames (19), and a seventh elastic member (182) is fixedly connected between the two, the second sliding frames (19) are fixedly connected to a placement frame (20), the placement frame (20) is used to place the joint, and the fixed head (4) is provided with a connection component for alternately driving the symmetrical second sliding frames (19) to move.

8. The multi-station joint assembly machine for nylon tube production according to claim 7, characterized in that: The connection assembly comprises symmetrically distributed limit blocks (23), the symmetrically distributed limit blocks (23) are all slidably connected to the fixed head (4), an eighth elastic member (231) is fixedly connected between the limit blocks (23) and the fixed head (4), a limit hole (191) is provided on a side of the second sliding frame (19) close to the fixed head (4), and when the limit block (23) is located in an adjacent limit hole (191), the adjacent second sliding frame (19) is limited.

9. The multi-station joint assembly machine for nylon tube production according to claim 7, characterized in that: The placement rack (20) is fixedly connected to an elastic telescopic rod (21), and the telescopic end of the elastic telescopic rod (21) is fixedly connected to a stopper (22), and the stopper (22) is used to limit the position of the joint.

10. The multi-station joint assembly machine for nylon tube production according to claim 6, characterized in that: It also comprises symmetrically distributed positioning members (24), the number of the positioning members (24) being the same as the number of the fixing frames (6), the positioning members (24) being slidably connected to the adjacent fixing frames (6), and a ninth elastic member (241) being fixedly connected therebetween, the positioning members (24) being used to position the end of the tube body, the upper extrusion block (8) being fixedly connected to an extrusion plate (25), the extrusion plate (25) being used to squeeze the positioning members (24) so ​​that the positioning members (24) are separated from contact with the end of the tube body.

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