Automatic positioning and assembling system and method for fitness equipment assembly

Abstract

The invention belongs to the technical field of bending, assembling and welding, and particularly relates to an automatic positioning and assembling system and method.The automatic positioning and assembling system comprises a forming base which comprises a fixed part and a movable part, and the two sides of the fixed part are fixedly connected with forming strips; the two ends of the top of the moving part are fixedly connected with a lower end elbow and an upper end elbow correspondingly, and an upper forming pressing roller and a lower forming pressing roller are installed on the two sides of the exterior of the moving part. The movable pressing head comprises a profiling part and a positioning part, the positioning part is connected to the middle of the profiling part in a sliding mode and matched with the fixing part, pipe fitting guide grooves are formed in the inner sides of the profiling part and the forming strip correspondingly, and an equipment pipe fitting is arranged in the pipe fitting guide grooves and formed through die assembly of the profiling part and the forming strip; bending forming of the pipe fitting and butt-joint assembly of the pipe fitting and other pipe fittings can be achieved on one machine body, meanwhile, preconditions for welding and fixing are generated, convenience and flexibility are achieved, the problems of inaccurate butt-joint, connection deformation, inaccurate assembly and incomplete welding in a traditional process are greatly reduced, and the production efficiency and the production quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical fields of bending, assembling and welding, and specifically to an automatic positioning and assembling system and method for fitness equipment components. Background Art

[0002] Most common single-person abdominal exercise boards are components with multiple horizontal pipes evenly welded in the middle of two side-bent pipe fittings as the main body, and then some leg assistants and bottom supports are welded to complete the production; during production, most of the curved pipe fittings on the side are bent by a pipe bender to produce the side pipe fittings, and then they can be welded together after being assembled and positioned with the horizontal pipe fittings; the side curved pipe fittings formed at different times often have errors during assembly, and it is easier to produce deformation or distortion during subsequent welding. Moreover, the fixation of multiple horizontal pipe fittings along the curve direction often requires a large number of auxiliary mechanisms during welding, which is relatively complex and time-consuming. At the same time, the dispersion effect of the fixation is not satisfactory, greatly reducing the production quality and efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic positioning and assembling system and method for fitness equipment components to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: It includes a forming seat and a moving punch. The forming seat includes a fixed part and a moving part. Forming strips are fixedly connected to both sides of the fixed part. The moving part is located on both sides of the fixed part. Lower end elbows and upper end elbows are respectively fixedly connected to both ends of the top of the moving part. The moving part can move up and down and back and forth relative to the fixed part, and the lower end elbows and the upper end elbows can be connected to both ends of the forming strip. Upper forming pressure rollers and lower forming pressure rollers are installed on both outer sides of the moving part. The upper forming pressure roller uses the center of the upper end elbow as the rotation center to bend and form the lower end of the fitness equipment pipe fitting, and the lower forming pressure roller uses the center of the lower end elbow as the rotation center to bend and form the upper end of the fitness equipment pipe fitting. The moving punch includes a pressing part and a positioning part. The positioning part is slidably connected to the middle of the pressing part and cooperates with the fixed part to position the fitness equipment pipe fitting. Pipe fitting guide grooves are opened on both the pressing part and the inner side of the forming strip. The fitness equipment pipe fitting is placed in the pipe fitting guide groove and is formed by the closing of the pressing part and the forming strip. Docking grooves matching the upper forming pressure rollers and the lower forming pressure rollers are respectively arranged on both outer sides of the pressing part.

[0005] As a further solution of the present invention, a positioning groove is opened in the middle of the fixed part. A positioning strip is installed in the positioning groove. A plurality of evenly vertically distributed spacer plates are fixedly connected to the surface of the positioning strip. A fitting groove is opened in the middle of the positioning part. When the fixed part and the positioning part are closed, the spacer plates enter the fitting groove.

[0006] As a further solution of the present invention, an independent block is provided in the middle of the fixing part. A moving plate is fixedly connected to the inner side of the moving part. A set of moving lead screws and guide rods are installed between the moving plates on both sides and the independent block. The moving lead screws all pass through the independent block and are in threaded cooperation with it, and the guide rods all pass through the independent block and are in sliding cooperation with it.

[0007] As a further solution of the present invention, sliding holes are opened in the inner parts at both ends of the fixing part. Lifting plates are fixedly connected to both sides of the independent block. The ends of the lifting plates are located in the sliding holes and are in sliding cooperation with them. Fixed ratio screws are rotatably connected to both ends of the fixing part. The fixed ratio screws all pass through the lifting plates and are in threaded cooperation with them.

[0008] As a further solution of the present invention, synchronous gears are installed at both ends of the fixing part through brackets. The synchronous gears are in transmission cooperation with the positioning screws through bevel gears. The synchronous gears are located at the outer ends on both sides of the positioning part.

[0009] As a further solution of the present invention, auxiliary plates are fixedly connected to both sides of the lifting plate. A sliding sleeve is fixedly connected to the inner bottom of the moving part. The auxiliary plates are located in the sliding sleeve and are in sliding cooperation with each other.

[0010] As a further solution of the present invention, adjustment grooves are opened at both ends of the positioning part. Inner racks are slidably arranged in the adjustment grooves. The inner racks are located inside the synchronous gears and drive the synchronous gears to rotate when the positioning part and the fixing part are clamped.

[0011] As a further solution of the present invention, it further includes an outer bracket. A clamping cylinder is installed at the inner top of the outer bracket. A top seat is fixedly connected to the top of the pressing part together. A positioning push rod is installed between the top seat and the positioning part. A limiting top plate is fixedly connected inside the pressing part. The positioning part is located at the bottom of the limiting top plate; the output end of the clamping cylinder is fixedly connected to the top seat.

[0012] An automatic positioning and assembling method for a fitness equipment component includes the following steps: Place the pipe fittings on both sides of the equipment in the pipe fitting guide grooves of the forming strip, and then move the moving pressure head down to be clamped with the forming seat, and the pipe fittings on both sides of the equipment are formed for the first step; When the moving pressure head moves down, the moving part descends to a position where the lower end elbow and the upper end elbow are smoothly curved with the top surface of the forming strip. Then, the moving parts on both sides move towards the fixing part at the same time until the lower end elbow and the upper end elbow are connected to both ends of the forming strip; Turn on the upper forming roller and the lower forming roller. The upper forming roller bends and forms the lower ends of the pipe fittings on both sides of the equipment with the center of the upper end elbow as the rotation center, and the lower forming roller bends and forms the upper ends of the pipe fittings on both sides of the equipment with the center of the lower end elbow as the rotation center; The moving pressure head moves upward, releasing the formed pipe fitting. At the same time, the moving part rises. Under the retention of the upper forming roller and the lower forming roller, the pipe fittings on both sides of the formed equipment are lifted upward to separate from the forming strip. The moving part moves to both sides. One by one, the horizontal pipe fittings of the equipment are placed on one side of the spacer between the moving pressure head and the fixed part. Then, the positioning part moves downward to tightly press and fix the horizontal pipe fittings of the equipment. The moving part is moved again closer to the fixed part, so that the pipe fittings on both sides of the formed equipment are attached to both ends of the horizontal pipe fittings.

[0013] In this formed and positioned assembled state, welding is carried out to complete the assembly and fixation of the equipment.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The pipe fittings on both sides are formed together, and the bending states of the pipe fittings are the same, which is beneficial for subsequent welding and not easily displaced and deformed.

[0015] 2. The upper forming roller and the lower forming roller fix the formed side pipe fittings in the moving part under the cooperation of the pipe fitting guide groove. Furthermore, the pipe fittings can be driven by the moving part to rise and leave the forming strip without other fixing means and without moving the formed pipe fittings, avoiding re-docking, being simple and flexible, and having stable fixation.

[0016] 3. The center of each horizontal pipe fitting is aligned with the axis of the formed pipe fitting, thereby achieving the centered connection of the horizontal pipe fitting; then the moving part is moved closer to the fixed part until the side of the side pipe fitting is aligned with and abuts against the end of the horizontal pipe fitting to complete the positioning assembly and docking. At this time, welding can be started, greatly reducing the docking and assembly time of the horizontal pipe fitting and the side pipe fitting, and the docking and assembly being relatively uniform and accurate, which is beneficial for improving the subsequent welding quality. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the side perspective semi-sectional structure of the overall structure of the present invention; Figure 3 It is a schematic diagram of the bottom perspective structure of the overall structure of the present invention; Figure 4 For the present invention Figure 3 The enlarged structure schematic diagram of part A in; Figure 5 It is a schematic diagram of the omitted structure at the front part of the pipe fitting positioning of the fixed seat of the present invention; Figure 6 It is a schematic diagram of the side pipe fitting pressing structure of the present invention; Figure 7 It is a schematic diagram of the bending structure at both ends of the side pipe fitting after the moving part is closed of the present invention; Figure 8Schematic diagram of the rising structure of the moving part when the moving punch of the present invention rises (the upper and middle parts are schematic diagrams of the side pipe fittings jacked out of the pipe fitting guide groove, and the bottom is a schematic diagram of the pipe fitting loading and positioning); Figure 9 Schematic diagram of the structure after the pipe fittings of the present invention are positioned and assembled; Figure 10 For the present invention Figure 9 Enlarged schematic diagram of part B and schematic diagram of principle in the present invention; Figure 11 Schematic diagram of the overall use structure of the outer bracket of the present invention.

[0018] Reference numerals: 1, fixed part; 2, moving part; 3, forming strip; 4, lower end elbow; 5, upper end elbow; 6, upper forming roller; 7, lower forming roller; 8, pressing part; 9, positioning part; 10, pipe fitting guide groove; 11, docking groove; 12, positioning groove; 13, positioning strip; 14, spacer; 15, fitting groove; 16, independent block; 17, moving plate; 18, moving lead screw; 19, guide rod; 20, sliding hole; 21, lifting plate; 22, fixed ratio screw; 23, synchronous gear; 24, auxiliary plate; 25, sliding sleeve; 26, adjustment groove; 27, internal rack; 28, outer bracket; 29, die closing cylinder; 30, positioning push rod; 31, limit top plate; 32, top seat. Detailed implementation manners

[0019] Please refer to Figures 1 - 11 , the working principle of the technical solution provided by the present invention is as follows: When the moving punch is located above, two side pipe fittings of the equipment are respectively placed in the pipe fitting guide groove 10 of the forming strip 3, and then the moving punch is pressed down, and the pressing part 8 and the positioning part 9 move down together until they are die closed with the fixed part 1 and the forming strip 3, as Figure 6 shown, and then the straight pipe is formed into a curved shape matching the pipe fitting guide groove 10. At this time, both ends of the pipe fitting are straight free ends; At the same time, the moving part 2 moves down to a state overlapping with the side of the fixed part 1. At this time, a smooth curve can be formed with the forming strip 3. The moving lead screw 18 is connected to drive the two side moving parts 2 to approach the fixed part 1 at the same time until the pipe fitting guide grooves 10 of the moving part 2 and the forming strip 3 are docked. At this time, the upper forming roller 6 and the lower forming roller 7 both enter the respective matching docking grooves 11, and then the driving parts of the upper forming roller 6 and the lower forming roller 7 are connected, so that the upper forming roller 6 bends and forms the lower end of the pipe fitting with the center of the upper end elbow 5 as the rotation center, and the lower forming roller 7 bends and forms the upper end of the pipe fitting with the center of the lower end elbow 4 as the rotation center, as Figure 7 shown. At this time, the complete forming of the side pipe fittings is completed, and the two side pipe fittings are formed together, and the bending states of the pipe fittings are the same, which is beneficial to subsequent welding and not easy to be misaligned and deformed; After the side pipe is completely bent and formed, the upper forming roller 6 and the lower forming roller 7 are kept in a horizontal position. At this time, the formed pipe can be fixed in the moving part 2 with the cooperation of the pipe guide groove 10, and then the formed pipe can be driven by the moving part 2 to rise and leave the forming bar 3 without other fixing means or moving the formed pipe to avoid docking again; the upper forming roller 6 and the lower forming roller 7 are directly stopped and fixed after bending, which is simple, flexible and stable.

[0020] After the side pipe is completely bent and formed, the pressing part 8 and the positioning part 9 are first moved upward together to expose the formed pipe, and the pipe can be moved upward to leave the pipe guide groove 10; at the same time, the moving part 2 is moved upward, and the lower end elbow 4 and the upper end elbow 5 are moved upward to take the pipe away from the pipe guide groove 10 of the forming strip 3, so that the formed pipe can be moved to the side, which is convenient for the subsequent docking of the horizontal pipe; by moving the lead screw 18, the moving parts 2 on both sides are driven away from the fixed part 1 at the same time, and the formed pipe is moved out, so that the horizontal pipe can be placed between the formed pipes on both sides. Figure 8 As shown; After the transverse tube is placed in accordance with the spacer plate 14, the positioning part 9 is moved downward to press and fix the transverse tube on the fixing part 1 along the center curve of the formed tube, so that the center of each transverse tube is aligned with the axis of the formed tube, thereby realizing the centered connection of the transverse tube; then the moving part 2 is moved closer to the fixing part 1 until the side surface of the side tube is aligned and tightly attached to the end of the transverse tube, completing the positioning assembly and docking, and welding can then begin, which greatly reduces the docking and assembly time of the transverse tube and the side tube, and the docking and assembly are more uniform and accurate, which is conducive to improving the subsequent welding quality.

[0021] Specifically, in the original state, the top of the movable part 2 is higher than the top of the fixed part 1, and then when the pressing part 8 and the positioning part 9 move downward, the inner rack 27 in the adjustment groove 26 can be inserted into the slide hole 20 and mesh with the outer synchronous gear 23 at the same time, and drive the synchronous gear 23 to rotate during the downward movement of the inner rack 27, and then drive the fixed ratio screw 22 to rotate through the bevel gear transmission, so that the lifting plate 21 threadedly matched with it is lowered, and when the pressing part 8 and the forming strip 3 are molded, the movable part 2 is lowered to a state overlapping with the side of the fixed part 1; When the profiling part 8 and the positioning part 9 rise, the inner rack 27 moves upward, the synchronous gear 23 reverses, and then the fixed ratio screw 22 rotates in the opposite direction, so that the lifting plate 21 rises and lifts the profiling pipe upward until the synchronous gear 23 is separated from the inner rack 27, thereby realizing the automatic alignment and lifting of the moving part 2 when the mold is closed and opened, which is convenient for bending and forming and pushing out the pipe; The degree to which the positioning part 9 moves downward to cause the moving part 2 to rise is determined by the meshing length between the internal rack 27 and the synchronous gear 23. When the internal rack 27 moves upward, the meshing length with the synchronous gear 23 becomes smaller, and the number of turns that the synchronous gear 23 can be driven to rotate is also less. At this time, only the meshing length between the internal rack 27 and the synchronous gear 23 needs to be controlled. At the same time, when the number of turns that the synchronous gear 23 rotates at the meshing length is transmitted to the fixed-ratio screw 22 in a one-to-one ratio, it only needs to drive the lifting plate 21 to rise by half of the meshing length. The specific ratio can be adjusted by adjusting the pitch of the fixed-ratio screw 22. The larger the pitch, the more the lifting plate 21 rises. In this way, the rising distance of the moving part 2 can be adjusted; As Figure 10 shown, taking the downward distance of the internal rack 27 as 2D as an example, the upward distance of the moving part 2 is D, that is, the upward distance of the bent parts at both ends is D, and D needs to be greater than the radius R1 of the side pipe fitting. Then, adjust the distance between the top end of the positioning strip 13 and the top end of the fixed part 1 so that the radius R2 of the inserted horizontal pipe fitting + the distance H between the top end of the positioning strip 13 and the top end of the fixed part 1 = D, so that the inserted horizontal pipe fitting can be automatically aligned with the axis position of the side pipe fitting, thereby realizing centered assembly docking and welding.

[0022] Specifically, the movement of the moving part 2 is driven by a motor on the side of the moving plate 17 of the moving part 2 to drive the connected moving lead screw 18 to rotate. The moving lead screw 18 is threadedly connected inside the independent block 16. Furthermore, the moving part 2 and the moving plate 17 can move evenly and synchronously to both sides under the guidance of the guide rod 19, which is more convenient and accurate. After assembling the horizontal pipe fitting, the ends of the side pipe fitting and the horizontal pipe fitting can be pressed and fitted.

[0023] At the same time, the sliding sleeve 25 slides outward along the auxiliary plate 24. The main function is that when the lifting plate 21 moves up and down, the up and down movement of the moving part 2 is made more stable through the strengthened connection of the auxiliary plate 24.

[0024] Specifically, after the formed pipe fitting rises and disengages from the forming strip 3 and moves to the side, after inserting the horizontal pipe fitting, the positioning push rod 30 can be turned on to push the positioning part 9 downward, and then the positioning part 9 presses the horizontal pipe fitting separated by the spacer plate 14 after being inserted. The fixing effect is better. After the positioning push rod 30 retracts the positioning part 9 to its original state, the positioning part 9 also contacts the bottom of the limit top plate 31 at the same time, thereby further stabilizing the position of the positioning part 9.

[0025] Among them, in order to save the time for the up and down movement of the pressing part 8 and the positioning part 9, the upward distance of the pressing part 8 after completely pressing the side pipe fitting needs to be greater than 2*R1, but not too large, so that the horizontal pipe fitting can be inserted from the side, thereby saving the time for assembly and docking and further improving the efficiency.

[0026] Specifically, the top seat 32 and its internal components are installed by means of the outer support 28. The top seat 32 is driven to move up and down by the mold clamping cylinder 29, thereby driving the common up and down movement of the pressing part 8 and the positioning part 9. The positioning part 9 is driven to move up and down independently by the positioning push rod 30, and the limit top plate 31 is used as the top limit of the positioning part 9.

[0027] On one body of this device, the bending and forming of pipe fittings and the docking and assembly with other pipe fittings can be realized, and at the same time, the prerequisite conditions for welding and fixing are generated. It is very convenient and flexible, and greatly reduces the problems of inaccurate docking, connection deformation and inaccurate assembly and ineffective welding in the traditional process, improving production efficiency and production quality.

Claims

1. An automatic positioning and assembly system for fitness equipment components, characterized in that: It comprises a forming seat and a movable pressure head, the forming seat comprising a fixed part (1) and a movable part (2), and forming strips (3) are fixedly connected to both sides of the fixed part (1); The movable part (2) is located on both sides of the fixed part (1), and the two ends of the top of the movable part (2) are respectively fixedly connected with a lower end elbow (4) and an upper end elbow (5), and the movable part (2) can move up and down and forward and backward relative to the fixed part (1), and the lower end elbow (4) and the upper end elbow (5) can be connected to the two ends of the forming strip (3); An upper forming roller (6) and a lower forming roller (7) are installed on both sides of the outside of the moving part (2); the upper forming roller (6) uses the center of the upper end elbow (5) as the center of rotation to bend the lower end of the forming equipment pipe, and the lower forming roller (7) uses the center of the lower end elbow (4) as the center of rotation to bend the upper end of the forming equipment pipe; The movable pressure head comprises a pressing part (8) and a positioning part (9), wherein the positioning part (9) is slidably connected to the middle part of the pressing part (8) and cooperates with the fixing part (1) to position the equipment pipe. The pressing part (8) and the inner side of the forming strip (3) are both provided with pipe guide grooves (10), and the equipment pipe is placed in the pipe guide groove (10) and is molded by the pressing part (8) and the forming strip (3). The outer sides of the profiling portion (8) are respectively provided with docking grooves (11) matching the upper forming roller (6) and the lower forming roller (7).

2. The automatic positioning and assembly system for fitness equipment components according to claim 1, characterized in that: A positioning groove (12) is provided in the middle of the fixing portion (1), a positioning strip (13) is installed in the positioning groove (12), a plurality of evenly vertically distributed spacer plates (14) are fixedly connected to the surface of the positioning strip (13), a matching groove (15) is provided in the middle of the positioning portion (9), and the spacer plates (14) enter the matching groove (15) when the fixing portion (1) and the positioning portion (9) are molded together.

3. The automatic positioning and assembly system for fitness equipment components according to claim 1, characterized in that: An independent block (16) is provided in the middle of the fixed portion (1), a moving plate (17) is fixedly connected to the inner side of the moving portion (2), and a group of moving lead screws (18) and guide rods (19) are installed between the moving plates (17) on both sides and the independent block (16), the moving lead screws (18) pass through the independent block (16) to be threadedly engaged therewith, and the guide rods (19) pass through the independent block (16) to be slidably engaged therewith.

4. The automatic positioning and assembling system for fitness equipment components according to claim 3, characterized in that: Sliding holes (20) are provided inside both ends of the fixing part (1), and lifting plates (21) are fixedly connected to both sides of the independent block (16). The ends of the lifting plates (21) are located in the sliding holes (20) and slideably cooperate with them. Fixed ratio screw rods (22) are rotatably connected to both ends of the fixing part (1), and the fixed ratio screw rods (22) pass through the lifting plates (21) and threadably cooperate with them.

5. The automatic positioning and assembling system for fitness equipment components according to claim 4, characterized in that: Synchronous gears (23) are mounted on both ends of the fixing portion (1) via brackets. The synchronous gears (23) are matched with the positioning screw via bevel gear transmission. The synchronous gears (23) are located at the outer ends of both sides of the positioning portion (9).

6. The automatic positioning and assembling system for fitness equipment components according to claim 4, characterized in that: Auxiliary plates (24) are fixedly connected to both sides of the lifting plate (21), a sliding sleeve (25) is fixedly connected to the inner bottom of the moving part (2), and the auxiliary plate (24) is located in the sliding sleeve (25) and the two are slidably matched.

7. The automatic positioning and assembling system for fitness equipment components according to claim 5, characterized in that: Both ends of the positioning portion (9) are provided with adjustment grooves (26), and an inner rack (27) is slidably provided in the adjustment groove (26). The inner rack (27) is located on the inner side of the synchronous gear (23) and cooperates with the synchronous gear (23) to rotate when the positioning portion (9) and the fixing portion (1) are molded together.

8. The automatic positioning and assembling system for fitness equipment components according to claim 1, characterized in that: It also includes an outer bracket (28), a mold clamping cylinder (29) is installed on the top of the outer bracket (28), a top seat (32) is fixedly connected to the top of the pressing part (8), a positioning push rod (30) is installed between the top seat (32) and the positioning part (9), a limiting top plate (31) is fixedly connected to the inside of the pressing part (8), and the positioning part (9) is located at the bottom of the limiting top plate (31); the output end of the mold clamping cylinder (29) is fixedly connected to the top seat (32).

9. The method for automatically positioning and assembling a fitness equipment component according to claim 1, comprising the automatic positioning and assembling system according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: placing the pipes on both sides of the equipment in the pipe guide grooves (10) of the forming strip (3), and then moving the movable pressure head downward to engage with the forming seat, so that the pipes on both sides of the equipment are formed in the first step; S2: As the moving pressure head moves downward, the moving part (2) descends to a position where the lower end elbow (4) and the upper end elbow (5) form a smooth curve with the top surface of the forming strip (3), and then the moving parts (2) on both sides move toward the fixed part (1) at the same time until the lower end elbow (4) and the upper end elbow (5) are connected to the two ends of the forming strip (3); S3: The upper forming roller (6) and the lower forming roller (7) are turned on, the upper forming roller (6) uses the center of the upper end elbow (5) as the center of rotation to bend the lower ends of the pipe fittings on both sides of the forming device, and the lower forming roller (7) uses the center of the lower end elbow (4) as the center of rotation to bend the upper ends of the pipe fittings on both sides of the forming device; S4: The moving pressure head moves upward to release the formed pipe fittings. At the same time, the moving part (2) rises and, under the support of the upper forming roller (6) and the lower forming roller (7), the pipe fittings on both sides of the formed equipment are moved upward to separate from the forming strip (3). S5: the moving part (2) moves to both sides, and the transverse pipes of the equipment are placed one by one on one side of the partition plate (14) between the moving pressure head and the fixed part (1), and then the positioning part (9) moves downward to press and fix the transverse pipes of the equipment, and the moving part (2) is moved closer to the fixed part (1) again, so that the pipes on both sides of the formed equipment are fitted with the two ends of the transverse pipes; S6: In this formed and positioned assembled state, welding is performed to complete the assembly and fixation of the equipment.

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