Auxiliary riveting device for folding chair production

Abstract

The utility model discloses an auxiliary riveting device for folding chair production, which is characterized by comprising a support frame, a mounting frame, a limit rod, a base and a die, the top of the support frame is connected with the mounting frame, the middle of the mounting frame is horizontally connected with the limit rod, the base is arranged in the mounting frame, the base is slidably connected with the limit rod, and the die is connected with the support frame. The base is connected with a mold through a bolt; the riveting device has the advantages that a workpiece is placed through the die and can be quickly positioned, meanwhile, the workpiece is pressed and fixed through the pressing plate, so that riveting work is facilitated, and the pressing plate can be quickly locked and unlocked through the arrangement of the movable rod and the wedge-shaped block; the servo motor drives the lead screw to rotate, so that the base drives the die to move, and a workpiece is stably moved to the position below a riveting head of the riveting machine to be riveted.

Description

Technical Field

[0001] The utility model relates to an auxiliary riveting device, in particular to an auxiliary riveting device for producing folding chairs. Background Art

[0002] A folding chair is a lightweight, stackable chair that is easy to move and saves space. There are many choices of materials for folding chairs, one of which is mainly made of thickened steel pipes and Oxford cloth. The surface of the steel pipe is sprayed with plastic to prevent rust and look beautiful. In addition, the important parts of the stress are treated with process mechanics to greatly enhance the load-bearing capacity.

[0003] The folding connection parts of the folding chair are connected with galvanized rivets and raw plastic parts. At present, when riveting, the workpiece is generally fixed under the rivet head of the riveting machine, and then the connecting piece is held and placed on the workpiece, and then the riveting connection is performed through the riveting machine. Then, the riveted workpiece is removed from the work station, and the next workpiece is riveted. In this way, after the riveting of each workpiece is completed, it is necessary to complete the unloading and then the loading before continuing the riveting work, and the overall work efficiency is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an auxiliary riveting device for folding chair production, which can carry out riveting operation and loading and unloading of materials simultaneously and improve the working efficiency.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: an auxiliary riveting device for folding chair production, including a support frame, a mounting frame, a limiting rod, a base and a mold, the top of the support frame is connected to the mounting frame, the middle of the mounting frame is horizontally connected to the limiting rod, the mounting frame is provided with a base, the base is slidably connected to the limiting rod, and the mold is connected to the base by bolts.

[0006] A further preferred solution of the utility model is: it also includes a screw and a servo motor, the middle part of the mounting frame is rotatably connected with the screw, the screw is threadedly connected to the base, the left side of the mounting frame is installed with the servo motor, and the output shaft of the servo motor is connected to the screw.

[0007] A further preferred scheme of the utility model is: it also includes a fixed frame, a pressure plate, a torsion spring and a limiting structure. The top left side of the left mold and the top right side of the right mold are connected to a fixed frame, a pressure plate is rotatably connected to the fixed frame, a torsion spring is connected between the pressure plate and the fixed frame, and a limiting structure is provided on the mold, and the limiting structure can limit the position of the pressure plate.

[0008] A further preferred scheme of the utility model is: the limiting structure includes a movable rod, a sliding sleeve, a wedge block and a return spring, the top right side of the left mold and the top left side of the right mold are connected with the sliding sleeve, the movable rod is slidably connected in the sliding sleeve, the end of the movable rod close to the pressure plate is connected with the wedge block, and the return spring is connected between the wedge block and the sliding sleeve.

[0009] A further preferred solution of the utility model is: it also includes a handle, and the top of the pressing plate is connected with the handle, so that the pressing plate can be easily rotated by the handle.

[0010] A further preferred embodiment of the utility model is that it also includes rollers, which are rotatably connected to the mounting frame at even intervals, the bottom of the base is in contact with the rollers, the rollers can support the base, and the rollers reduce the friction between the base and the mounting frame, so that the base moves smoothly.

[0011] A further preferred solution of the utility model is: it also includes a semi-finished product placement box, two semi-finished product placement boxes are symmetrically connected to the middle part of the support frame, and the workpieces that need to be riveted can be placed in the semi-finished product placement box, which is convenient for loading operations.

[0012] A further preferred solution of the utility model is: it also includes a contact switch, and the contact switches are connected to the left and right sides of the mounting frame. The contact switch is electrically connected to the servo motor. When the base moves to the inner limit position of the mounting frame, the base contacts the contact switch, thereby controlling the servo motor to shut down.

[0013] Compared with the prior art, the utility model has the advantages that the workpiece is placed by the mold, the workpiece can be quickly positioned, and the workpiece is pressed and fixed by the pressure plate, which is convenient for riveting work, and the setting of the movable rod and the wedge block can quickly lock and unlock the pressure plate; the servo motor drives the lead screw to rotate, and the mold is driven to move through the base, so that the workpiece is stably moved to the bottom of the rivet head of the riveting machine for riveting work, and two molds are set to place the workpiece. When the workpiece in one mold is riveted, the workpiece on the other mold can be unloaded or loaded, ensuring that the riveting work is carried out continuously, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the mounting frame, servo motor and contact switch of the utility model;

[0017] Figure 3 This is a schematic diagram of the matching structure of the wedge block and the pressure plate of the utility model;

[0018] Figure 4 It is a schematic diagram of the connection structure of the mounting frame and the rotating roller of the utility model.

[0019] In the figure: 1. riveting machine, 2. support frame, 3. mounting frame, 4. lead screw, 5. limit rod, 6. base, 7. mold, 8. servo motor, 9. fixed frame, 901, pressure plate, 902, torsion spring, 10. movable rod, 101, sliding sleeve, 11. wedge block, 12. return spring, 13. handle, 14. roller, 15. semi-finished product placement box, 16. contact switch. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0021] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0022] This embodiment mainly describes the structure of the auxiliary riveting device, which is as follows:

[0023] An auxiliary riveting device for folding chair production, such as Figure 1-2 As shown, it includes a support frame 2, a mounting frame 3, a lead screw 4, a limiting rod 5, a base 6, a mold 7 and a servo motor 8. The top of the support frame 2 is fixedly connected to the mounting frame 3 by bolts, the middle of the mounting frame 3 is horizontally connected to the limiting rod 5, a base 6 is arranged inside the mounting frame 3, the base 6 is slidably connected to the limiting rod 5, the middle of the mounting frame 3 is rotatably connected to the lead screw 4, the lead screw 4 is threadedly connected to the base 6, a servo motor 8 is installed on the left side of the mounting frame 3 by bolts, the output shaft of the servo motor 8 is connected to the lead screw 4, and two molds 7 are connected to the base 6 by bolts.

[0024] like Figure 1 , Figure 3 and Figure 4As shown, it also includes a fixed frame 9, a pressure plate 901, a torsion spring 902, a movable rod 10, a sleeve 101, a wedge block 11, a reset spring 12 and a handle 13. The top left side of the left mold 7 and the top right side of the right mold 7 are both connected to the fixed frame 9, the pressure plate 901 is rotatably connected to the fixed frame 9, a torsion spring 902 is connected between the pressure plate 901 and the fixed frame 9, a limiting structure is provided on the mold 7, and the limiting structure can limit the position of the pressure plate 901, the top right side of the left mold 7 and the top left side of the right mold 7 are both connected to the sleeve 101, the movable rod 10 is slidably connected in the sleeve 101, the end of the movable rod 10 close to the pressure plate 901 is connected to the wedge block 11, the reset spring 12 is connected between the wedge block 11 and the sleeve 101, and the top of the pressure plate 901 is connected to a handle 13, and the pressure plate 901 can be easily rotated by the handle 13.

[0025] like Figure 1 and Figure 4 As shown, rollers 14 are also included. The mounting frame 3 is evenly spaced and rotatably connected to the rollers 14. The bottom of the base 6 is in contact with the rollers 14. The rollers 14 can support the base 6, and the rollers 14 reduce the friction between the base 6 and the mounting frame 3, so that the base 6 moves smoothly.

[0026] like Figure 1 and Figure 4 As shown, a semi-finished product placement box 15 is also included. Two semi-finished product placement boxes 15 are symmetrically connected to the middle part of the support frame 2. Workpieces that need to be riveted can be placed in the semi-finished product placement box 15 to facilitate loading operations.

[0027] like Figure 2 As shown, a contact switch 16 is also included. The contact switches 16 are connected to the left and right sides of the mounting frame 3. The contact switch 16 is electrically connected to the servo motor 8. When the base 6 moves to the inner limit position of the mounting frame 3, the base 6 contacts the contact switch 16, thereby controlling the servo motor 8 to turn off.

[0028] The support frame 2 is placed on the front side of the riveting machine 1 so that the mold 7 is located below the rivet head of the riveting machine 1. The mold 7 is replaced according to the structure of the workpiece to be riveted. Then the workpiece is placed in the mold 7. The pressing plate 901 is rotated by the handle 13, and the torsion spring 902 is deformed. When the pressing plate 901 rotates and contacts the wedge block 11, the pressing plate 901 squeezes the wedge block 11 to drive the movable rod 10 to move outward, and the reset spring 12 is deformed. When the pressing plate 901 passes over the wedge block 11, the reset spring 12 is deformed. Under the action, the wedge block 11 moves inward to clamp the pressure plate 901. At this time, the pressure plate 901 can press and fix the workpiece, and then the servo motor 8 is started to drive the screw 4 to rotate clockwise, thereby driving the base 6 to move to the right. The base 6 drives the workpiece to move to the right through the mold 7. When the required riveting position of the workpiece moves to just below the rivet head of the riveting machine 1, the servo motor 8 is turned off, and then the connecting piece is placed above the workpiece, and the riveting machine 1 is started, so that the workpiece and the connecting piece are riveted together by the riveting machine 1, and then the riveting machine 1 is continued. Continue to start the servo motor 8 to run clockwise, the mold 7 continues to drive the workpiece to move to the right, and repeats this process to continue riveting work on other required riveting positions of the workpiece; after the workpiece on the right mold 7 is riveted, continue to rivet the workpiece on the left mold 7, and at the same time, the operator can pull the movable rod 10 on the right mold 7 to the left, thereby driving the wedge block 11 to move to the left to unlock the fixed state of the pressure plate 901, and the pressure plate 901 rotates and resets under the action of the torsion spring 902. At this time, the pressure plate 901 no longer fixes the workpiece, takes out the riveted workpiece, and places a new tool in the right mold 7 and fixes it through the pressure plate 901. After the workpiece on the left mold 7 is riveted, start the servo motor 8 to run counterclockwise, thereby driving the base 6 to move to the left through the lead screw 4, so that the right mold 7 drives the workpiece to move to the bottom of the rivet head of the riveting machine 1 for riveting work, and at the same time, the riveted workpiece on the left mold 7 is taken out and collected, and repeated in this way, the workpiece can be riveted continuously to improve work efficiency.

[0029] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0030] The above is a detailed introduction to the auxiliary riveting device for folding chair production provided by the utility model. This article uses specific examples to illustrate the principle and implementation of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An auxiliary riveting device for folding chair production, characterized in that: The invention comprises a support frame (2), a mounting frame (3), a limiting rod (5), a base (6) and a mould (7); the top of the support frame (2) is connected to the mounting frame (3); the middle of the mounting frame (3) is connected to the limiting rod (5); a base (6) is arranged inside the mounting frame (3); the base (6) is slidably connected to the limiting rod (5); and the mould (7) is connected to the base (6) via bolts.

2. The auxiliary riveting device for folding chair production according to claim 1, characterized in that: It also includes a lead screw (4) and a servo motor (8); the lead screw (4) is rotatably connected to the middle of the mounting frame (3); the lead screw (4) is threadedly connected to the base (6); the servo motor (8) is installed on the mounting frame (3); and the output shaft of the servo motor (8) is connected to the lead screw (4).

3. The auxiliary riveting device for folding chair production according to claim 1, characterized in that: The mold (7) further comprises a fixing frame (9), a pressing plate (901), a torsion spring (902) and a limiting structure. The fixing frame (9) is connected to one side of the top of the mold (7). The pressing plate (901) is rotatably connected to the fixing frame (9). A torsion spring (902) is connected between the pressing plate (901) and the fixing frame (9). The mold (7) is provided with a limiting structure, and the limiting structure can limit the position of the pressing plate (901).

4. The auxiliary riveting device for folding chair production according to claim 3, characterized in that: The limiting structure includes a movable rod (10), a sliding sleeve (101), a wedge block (11) and a return spring (12); the other side of the top of the mold (7) is connected to the sliding sleeve (101); the movable rod (10) is slidably connected inside the sliding sleeve (101); the end of the movable rod (10) close to the pressure plate (901) is connected to the wedge block (11); and the return spring (12) is connected between the wedge block (11) and the sliding sleeve (101).

5. The auxiliary riveting device for folding chair production according to claim 3, characterized in that: It also includes a handle (13), and the top of the pressing plate (901) is connected to the handle (13).

6. The auxiliary riveting device for folding chair production according to claim 1, characterized in that: It also includes rotating rollers (14), which are evenly spaced and rotatably connected to the mounting frame (3), and the bottom of the base (6) is in contact with the rotating rollers (14).

7. The auxiliary riveting device for folding chair production according to claim 1, characterized in that: It also includes a semi-finished product placement box (15), and the middle part of the support frame (2) is clamped with the semi-finished product placement box (15).

8. The auxiliary riveting device for folding chair production according to claim 2, characterized in that: It also includes a contact switch (16), both sides of the mounting frame (3) are connected with the contact switch (16), and the contact switch (16) is electrically connected to the servo motor (8).

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