An automatic positioning and assembling system and method for a fitness equipment component

Abstract

The present invention discloses the technical field of bending, assembling and welding, specifically a system and method for automatically positioning and assembling a fitness equipment component, comprising a forming seat, comprising a fixed part and a movable part, with forming strips fixedly connected on both sides of the fixed part; the lower end elbow and the upper end elbow are fixedly connected at both ends of the top of the movable part, and an upper forming roller and a lower forming roller are installed on both sides of the outside of the movable part; the movable pressure head comprises a profiling part and a positioning part, the positioning part is slidably connected to the middle of the profiling part and cooperates with the fixed part, and pipe guide grooves are provided on the inner sides of the profiling part and the forming strip, and the equipment pipes are placed in the pipe guide grooves and are formed by the profiling part and the forming strip; the present invention can realize the bending and forming of pipes and the docking and assembly with other pipes on one body, and at the same time generate the prerequisites for welding and fixing, which is very convenient and flexible, and greatly reduces the problems of inaccurate docking, connection deformation, inaccurate assembly and false welding in traditional processes, thereby improving production efficiency and production quality.

Description

Technical Field

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

[0002] Most common single-person abdominal muscle plates are components with multiple horizontal tubes evenly welded in the middle of bent tubes on both sides, and are then fully completed by welding some leg auxiliary parts and bottom supports. During production, the curved tubes on the side are mostly bent by a tube bending machine to produce side tubes, and then assembled and positioned with the horizontal tubes before they can be welded together. The side curved tubes that are not formed at the same time often have errors during assembly, and are more likely to be deformed or twisted during subsequent welding. In addition, the fixation of multiple horizontal tubes along the curved direction during welding often requires the cooperation of a large number of auxiliary mechanisms, which is more complicated and time-consuming. At the same time, the dispersion effect of the fixation is also unsatisfactory, which greatly reduces the production quality and efficiency. Summary of the Invention

[0003] The object of the present invention is to provide a system and method for automatically positioning and assembling fitness equipment components to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: comprising a forming seat and a movable pressure head, the forming seat comprising a fixed portion and a movable portion, and forming strips are fixedly connected to both sides of the fixed portion;

[0005] The movable portion is located on both sides of the fixed portion, and the two ends of the top of the movable portion are respectively fixedly connected with a lower end elbow and an upper end elbow. The movable portion can move up and down and forward and backward relative to the fixed portion, and the lower end elbow and the upper end elbow can be connected to the two ends of the forming strip;

[0006] An upper forming roller and a lower forming roller are installed on both sides of the outer side of the moving part. The upper forming roller uses the center of the elbow at the upper end as the rotation center to bend the lower end of the forming equipment pipe. The lower forming roller uses the center of the elbow at the lower end as the rotation center to bend the upper end of the forming equipment pipe.

[0007] The movable pressure head 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 fixing part to position the equipment pipe. The pressing part and the inner side of the forming strip are both provided with a pipe guide groove. The equipment pipe is placed in the pipe guide groove and is formed by the pressing part and the forming strip.

[0008] Both sides of the outside of the pressing part are respectively provided with docking grooves matching the upper forming roller and the lower forming roller.

[0009] As a further solution of the present invention, a positioning groove is provided in the middle of the fixing part, a positioning strip is installed in the positioning groove, a plurality of evenly distributed upright spacers are fixedly connected to the surface of the positioning strip, a matching groove is provided in the middle of the positioning part, and the spacers enter the matching groove when the fixing part and the positioning part are molded together.

[0010] As a further solution of the present invention, an independent block is provided in the middle of the fixed part, a movable plate is fixedly connected to the inner side of the movable part, and a group of movable screws and guide rods are installed between the movable plates on both sides and the independent block. The movable screws pass through the independent block and are threadedly engaged with it, and the guide rods pass through the independent block and are slidingly engaged with it.

[0011] As a further solution of the present invention, sliding holes are opened inside both ends of the fixed part, and lifting plates are fixedly connected on both sides of the independent block. The ends of the lifting plates are located in the sliding holes and slide together with them. Fixed ratio screws are rotatably connected to both ends of the fixed part, and the fixed ratio screws pass through the lifting plates and threadedly engage with them.

[0012] As a further solution of the present invention, synchronous gears are installed at both ends of the fixing portion through brackets, and the synchronous gears are matched with the positioning screw through bevel gear transmission. The synchronous gears are located at the outer ends of both sides of the positioning portion.

[0013] 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, and the auxiliary plates are located in the sliding sleeve and the two are slidably matched.

[0014] As a further solution of the present invention, adjustment grooves are provided at both ends of the positioning part, and an internal rack is slidably provided in the adjustment groove. The internal rack is located on the inner side of the synchronous gear and cooperates to drive the synchronous gear to rotate when the positioning part and the fixed part are molded together.

[0015] As a further solution of the present invention, it also includes an external bracket, a mold clamping cylinder is installed on the top of the external bracket, the top of the pressing part is fixedly connected to a top seat, a positioning push rod is installed between the top seat and the positioning part, a limiting top plate is fixedly connected to the pressing part, and the positioning part is located at the bottom of the limiting top plate; the output end of the mold clamping cylinder is fixedly connected to the top seat.

[0016] A method for automatically positioning and assembling a fitness equipment component comprises the following steps:

[0017] Place the pipes on both sides of the equipment into the pipe guide grooves of the forming bar, and then move the movable pressure head downward to close the mold with the forming seat, and the pipes on both sides of the equipment are formed in the first step;

[0018] As the moving pressure head moves downward, the moving part descends to a position where the lower end elbow, the upper end elbow and the top surface of the forming strip form a smooth curve, and then the moving parts on both sides move toward the fixed part at the same time until the lower end elbow and the upper end elbow are connected to the two ends of the forming strip;

[0019] The upper forming roller and the lower forming roller are connected. The upper forming roller uses the center of the elbow at the upper end as the center of rotation to bend the lower ends of the pipe fittings on both sides of the forming equipment. The lower forming roller uses the center of the elbow at the lower end as the center of rotation to bend the upper ends of the pipe fittings on both sides of the forming equipment.

[0020] The moving pressure head moves up and releases the formed pipe. At the same time, the moving part rises and, under the support of the upper and lower forming rollers, the pipes on both sides of the formed equipment are moved up and away from the forming bar.

[0021] The movable part moves to both sides, and the transverse pipe fittings of the equipment are placed one by one on one side of the partition plate between the movable pressure head and the fixed part. Then the positioning part moves downward to press the transverse pipe fittings of the fixed equipment, and the movable part is moved closer to the fixed part again, so that the pipe fittings on both sides of the formed equipment are fitted with the two ends of the transverse pipe fittings.

[0022] In this formed and positioned assembled state, welding is performed to complete the assembly and fixation of the equipment.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The pipes on both sides are formed together, and the bending state of the pipes is the same, which is conducive to subsequent welding and is not easy to be dislocated and deformed.

[0025] 2. The upper forming roller and the lower forming roller fix the formed side pipe in the moving part in cooperation with the pipe guide groove, and then the pipe can be driven up and away from the forming bar by the moving part without other fixing means or moving the formed pipe, thus avoiding re-docking. It is simple, flexible and stable.

[0026] 3. The center of each transverse pipe is aligned with the axis of the formed pipe, thereby realizing the central connection of the transverse pipe; then the movable part is moved closer to the fixed part until the side of the side pipe is aligned and close to the end of the transverse pipe, completing the positioning assembly and docking. At this time, welding can be started, which greatly reduces the docking assembly time of the transverse pipe and the side pipe, and the docking assembly is more uniform and accurate, which is conducive to improving the subsequent welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of a half-section structure of the overall structure of the present invention from a side perspective;

[0029] Figure 3 This is a schematic diagram of the overall structure of the present invention from a bottom-up perspective;

[0030] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0031] Figure 5 This is a schematic diagram of the structure of the fixed seat tube positioning front portion omitted in the present invention;

[0032] Figure 6 This is a schematic diagram of the profiled structure of the side pipe fitting of the present invention;

[0033] Figure 7 This is a schematic diagram of the bending structure of the two ends of the tube after the moving part is folded;

[0034] Figure 8 Schematic diagram of the ascending structure of the movable part when the movable pressure head ascends (the upper and middle parts are schematic diagrams of the side pipes being lifted out of the pipe guide groove, and the bottom part is a schematic diagram of the pipe loading and positioning);

[0035] Figure 9 This is a schematic diagram of the structure of the pipe fitting after positioning and assembly of the present invention;

[0036] Figure 10 For the present invention Figure 9 A magnified schematic diagram of part B in the middle and a schematic diagram of the principle;

[0037] Figure 11 This is a schematic diagram of the overall structure of the external support of the present invention.

[0038] : Illustrations: 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 guide groove; 11. Docking groove; 12. Positioning groove; 13. Positioning strip; 14. Spacer; 15. Matching groove; 16. Independent block; 17. Moving plate; 18. Moving lead screw; 19. Guide rod; 20. Slide hole; 21. Lifting plate; 22. Ratio screw; 23. Synchronous gear; 24. Auxiliary plate; 25. Sliding sleeve; 26. Adjusting groove; 27. Inner rack; 28. Outer bracket; 29. Clamping cylinder; 30. Positioning push rod; 31. Limiting top plate; 32. Top seat. DETAILED DESCRIPTION

[0039] See also Figures 1-11 The working principle of the technical solution provided by the present invention is as follows:

[0040] When the moving pressure head is at the top, the two side pipes of the equipment are placed in the pipe guide groove 10 of the forming strip 3 respectively, and then the pressure head is moved downward, and the pressing part 8 and the positioning part 9 move downward together until they are molded with the fixing part 1 and the forming strip 3. Figure 6As shown, the straight tube is then formed into a curved shape that matches the pipe guide groove 10. At this time, both ends of the pipe are straight free ends;

[0041] At the same time, the movable part 2 moves down to a state overlapping with the side of the fixed part 1, and can form a smooth curve with the forming strip 3 at this time. The movable screw 18 is turned on to drive the movable parts 2 on both sides to approach the fixed part 1 at the same time until the movable part 2 and the pipe guide groove 10 of the forming strip 3 are docked. At this time, the upper forming roller 6 and the lower forming roller 7 both enter their respective matching docking grooves 11, and then the driving parts of the upper forming roller 6 and the lower forming roller 7 are turned on, so that the upper forming roller 6 bends the lower end of the formed pipe with the center of the upper end elbow 5 as the center of rotation, and the lower forming roller 7 bends the upper end of the formed pipe with the center of the lower end elbow 4 as the center of rotation, as shown in FIG. Figure 7 As shown, at this time, the side pipe is completely formed, and the pipes on both sides are formed together, and the bending state of the pipes is the same, which is conducive to subsequent welding and is not easy to be dislocated and deformed;

[0042] 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 the need for other fixing means or moving the formed pipe to avoid re-docking; the upper forming roller 6 and the lower forming roller 7 are directly stopped and fixed after bending, which is simple, flexible and stable.

[0043] 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 move the pipe upward to separate from 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 bring 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 subsequent docking with 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;

[0044] After the transverse tube is placed according to the spacer plate 14, the positioning part 9 is moved downward to press the transverse tube along the center curve of the formed tube and fix it on the fixing part 1, 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 movable 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. At this time, welding can be started, which greatly reduces the docking assembly time of the transverse tube and the side tube, and the docking assembly is more uniform and accurate, which is conducive to improving the subsequent welding quality.

[0045] 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 sliding hole 20 and meshed with the outer synchronous gear 23 at the same time. During the downward movement of the inner rack 27, the synchronous gear 23 is driven to rotate, and then the fixed ratio screw 22 is driven to rotate through the bevel gear transmission, so that the lifting plate 21 threadedly matched with it is lowered. When the pressing part 8 and the forming strip 3 are molded together, the movable part 2 is lowered to a state overlapping with the side surface of the fixed part 1;

[0046] When the pressing part 8 and the positioning part 9 rise, the inner rack 27 moves up, 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 pushes the pressed pipe upward until the synchronous gear 23 disengages from the inner rack 27, thereby realizing the automatic alignment and lifting of the moving part 2 when closing and opening the mold, which is convenient for bending, forming and pushing out the pipe;

[0047] The degree to which the moving part 2 rises when the positioning part 9 moves downward is determined by the meshing length of the inner rack 27 and the synchronous gear 23. When the inner rack 27 moves upward, the meshing length with the synchronous gear 23 becomes smaller, and the number of circles of the synchronous gear 23 that can be driven to rotate is also less. At this time, it is only necessary to control the meshing length of the inner rack 27 and the synchronous gear 23, and at the same time, make the number of circles of the synchronous gear 23 rotate one-to-one under the meshing length. When the number of circles is transmitted to the fixed ratio screw 22 in a one-to-one ratio, the lifting plate 21 is driven 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;

[0048] like Figure 10 As shown, taking the descending distance of the inner rack 27 as 2D as an example, the rising distance of the movable part 2 is D, that is, the rising distance of the elbows at both ends is D, and D needs to be greater than the radius R1 of the side pipe; then adjust the distance between the top end of the positioning bar 13 and the top end of the fixed part 1 so that the radius R2 of the inserted horizontal pipe + the distance H between the top end of the positioning bar 13 and the top end of the fixed part 1 = D, so that the inserted horizontal pipe can be automatically aligned with the axial position of the side pipe, thereby realizing centered assembly docking and welding.

[0049] Specifically, the movement of the moving part 2 is driven by the motor on the side of the moving plate 17 of the moving part 2 to rotate the moving screw 18 connected thereto, and the moving screw 18 is threadedly connected to the independent block 16, so that 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 cross tube, the side tube can be squeezed and fitted with the end of the cross tube.

[0050] At the same time, the sliding sleeve 25 slides outward along the auxiliary plate 24 . Its main function is that when the lifting plate 21 moves up and down, the reinforced connection of the auxiliary plate 24 makes the moving part 2 move up and down more smoothly.

[0051] Specifically, after the formed pipe rises and separates from the forming strip 3 and moves to the side, and the cross pipe is inserted, the positioning part 9 can be pushed down by connecting the positioning push rod 30, so that the positioning part 9 presses the cross pipe separated by the partition plate 14 after insertion, and 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 limiting top plate 31 at the same time, thereby further stabilizing the position of the positioning part 9.

[0052] Among them, in order to save the time of the up and down movement of the profiling part 8 and the positioning part 9, the rising distance of the profiling part 8 after the side pipe is fully profiling needs to be greater than 2*R1, but not too large, so that the cross pipe can be inserted from the side, thereby saving the time of assembly and docking and further improving efficiency.

[0053] Specifically, the top seat 32 and its internal components are installed by the external bracket 28, and the top seat 32 is driven to move up and down by the mold clamping cylinder 29, thereby driving the pressing part 8 and the positioning part 9 to move up and down together. The positioning part 9 is driven to move up and down by the positioning push rod 30 alone, and the limiting top plate 31 is used as the top limit of the positioning part 9.

[0054] The device can realize the bending and forming of pipe fittings and the docking and assembly with other pipe fittings on one body, and at the same time generate the prerequisites for welding and fixing. It is very convenient and flexible, and greatly reduces the problems of inaccurate docking, connection deformation, inaccurate assembly and false welding in traditional processes, thereby improving production efficiency and production quality.

Claims

1. An automatic positioning and assembly system for fitness equipment components, characterized by: It comprises a forming seat and a movable pressure head, wherein the forming seat comprises a fixed portion (1) and a movable portion (2), and forming strips (3) are fixedly connected to both sides of the fixed portion (1); The movable portion (2) is located on both sides of the fixed portion (1), and the two ends of the top of the movable portion (2) are respectively fixedly connected with a lower end elbow (4) and an upper end elbow (5). The movable portion (2) can move up and down and forward and backward relative to the fixed portion (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 movable portion (2). The upper forming roller (6) rotates around the center of the upper end elbow (5) for bending the lower end of the forming equipment pipe, and the lower forming roller (7) rotates around the center of the lower end elbow (4) for bending the upper end of the forming equipment pipe. The movable pressure head includes a pressing part (8) and a positioning part (9), wherein the positioning part (9) is slidably connected to the middle 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 a pipe guide groove (10), and the equipment pipe is placed in the pipe guide groove (10) and is formed by the pressing part (8) and the forming strip (3) through the mold combination; The outer sides of the pressing portion (8) are respectively provided with docking grooves (11) that match the upper forming roller (6) and the lower forming roller (7); 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 distributed vertical 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; An independent block (16) is provided in the middle of the fixing portion (1); sliding holes (20) are provided inside both ends of the fixing portion (1); both sides of the independent block (16) are fixedly connected to lifting plates (21); the ends of the lifting plates (21) are located in the sliding holes (20) and slideably engage with the lifting plates; both ends of the fixing portion (1) are rotatably connected to fixed ratio screw rods (22); the fixed ratio screw rods (22) pass through the lifting plates (21) and are threadedly engaged with the lifting plates; Synchronous gears (23) are installed at both ends of the fixed part (1) through brackets, and the synchronous gear (23) and the fixed ratio screw (22) are matched through bevel gear transmission. The synchronous gear (23) is located at the outer ends of both sides of the positioning part (9); auxiliary plates (24) are fixedly connected to both sides of the lifting plate (21), and a sliding sleeve (25) is fixedly connected to the bottom of the movable part (2), and the auxiliary plate (24) is located in the sliding sleeve (25) and the two are slidably matched; adjustment grooves (26) are provided at both ends of the positioning part (9), and an internal rack (27) is slidably provided in the adjustment groove (26). The internal rack (27) is located on the inner side of the synchronous gear (23) and cooperates to drive the synchronous gear (23) to rotate when the positioning part (9) and the fixed part (1) are molded.

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

3. The automatic positioning and assembly 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 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).

4. A method for automatically positioning and assembling a fitness equipment component, comprising the automatic positioning and assembly system according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1: The pipes on both sides of the equipment are placed in the pipe guide groove (10) of the forming strip (3), and then the movable pressure head is moved down to close the mold with the forming seat, and the pipes on both sides of the equipment are formed in the first step; S2: As the moving pressure head moves downward, the moving portion (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 portions (2) on both sides move toward the fixed portion (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 connected, the upper forming roller (6) bends the lower ends of the pipes on both sides of the forming device with the center of the upper end elbow (5) as the center of the rotation circle, and the lower forming roller (7) bends the upper ends of the pipes on both sides of the forming device with the center of the lower end elbow (4) as the center of the rotation circle; S4: The moving pressure head moves upwards 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 upwards and separated from the forming strip (3). S5: The moving part (2) moves away from the fixed part (1), and the transverse pipes of the equipment are placed one by one on the 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 the transverse pipes of the fixed 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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