Press fitting device for installing hot melting nut

Abstract

The invention discloses a press fitting device for installing a hot melting nut. The press fitting device comprises a workbench; the plate rack is used for placing plates and is arranged on the workbench along the length direction of the workbench; the punching assembly is arranged on the workbench, the punching assembly comprises an upper pressing block and a lower pressing block which move relatively in the height direction, a hot cutter is arranged on the upper pressing block, and the upper pressing block and the lower pressing block move relatively in the height direction so as to be used for machining holes in a plate; the positioning assembly is arranged on the workbench and is used for fixing the position of a hole in a plate; the feeding assembly is arranged to convey the hot melting nuts to the press fitting station in the width direction of the workbench; and the press-fitting assembly comprises a hot pressing head and a hot pressing head driving assembly, and the press-fitting assembly and the positioning assembly are arranged in an associated mode so that after the positioning assembly positions the hole in the plate, the hot melting nut fed into the press-fitting station by the feeding assembly can be pressed into the hole.

Description

Technical Field

[0001] The invention relates to a punching device, in particular to a press-fitting device for installing a hot-melt nut. Background Art

[0002] At present, it is often necessary to design and manufacture threaded mounting holes on 3D printed parts. In order to increase the service life of the threaded holes, it is usually necessary to use a hot melt nut press-fitting process.

[0003] In the prior art, a hot melt nut is usually heated by an electric soldering iron, and then an operator manually presses the hot melt nut into the hole of the part.

[0004] Yet, heating the hot-melt nut with an electric soldering iron to press-fit is difficult to ensure the spacing position of the press-fit, and is also difficult to ensure the verticality of the hot-melt nut, so its installation accuracy is low. In addition, the efficiency of adopting manual press-fit is also not high.

[0005] Based on this, it is hoped to provide a new press-fitting device that can solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a press-fitting device for installing hot-melt nuts, which can realize automatic press-fitting of hot-melt nuts, and has high press-fitting accuracy, high production efficiency, low skill requirements for operators, and good reliability.

[0007] In order to achieve the above object, the present invention proposes a press-fitting device for installing a hot melt nut, which comprises:

[0008] Workbench;

[0009] A sheet material rack for placing sheets, which is arranged on the workbench along the length direction of the workbench;

[0010] A punching assembly is arranged on the workbench, the punching assembly comprises an upper pressing block and a lower pressing block which move relative to each other in the height direction, the upper pressing block is provided with a hot cutter, the upper pressing block and the lower pressing block move relative to each other in the height direction, so as to process holes on the sheet material;

[0011] A positioning assembly is disposed on the workbench and is configured to fix the position of the hole on the sheet material;

[0012] A feeding assembly, which is configured to feed the hot melt nut to the press-fitting station along the width direction of the workbench;

[0013] The press-fitting assembly includes a hot pressing head and a hot pressing head driving assembly. The press-fitting assembly is associated with the positioning assembly so that after the positioning assembly positions the hole on the sheet material, the hot-melt nut sent by the feeding assembly to the press-fitting station is pressed into the hole.

[0014] Furthermore, in the press-fitting device of the present invention, the punching assembly further comprises:

[0015] A vertically arranged pressing block guide rail, on which the upper pressing block and the lower pressing block are slidably arranged;

[0016] a driving rod capable of moving in a height direction;

[0017] A lever, which is rotatably disposed on the workbench via a lever shaft;

[0018] An upper parallel rod, the tail end of which and the upper end of the lever are hinged with the lower end of the driving rod at the same hinge point, the head end of the upper parallel rod is provided with a first slide groove extending along the length direction of the upper parallel rod, and the tail end of the upper pressing block is slidably arranged in the first slide groove;

[0019] The tail end of the lower parallel rod is hinged to the lower end of the lever, the head end of the lower parallel rod is provided with a second slide groove extending along the length direction of the lower parallel rod, and the tail end of the lower pressing block is slidably arranged in the second slide groove.

[0020] Furthermore, the pressing device described in the present invention also includes a handle, which is connected to the hot pressing head driving assembly to drive the hot pressing head driving assembly to operate; the upper end of the driving rod has a driving rod groove extending in the length direction of the workbench, and the handle is provided with a pin, and the pin can be slidably disposed in the driving rod groove.

[0021] Furthermore, in the press-fitting device described in the present invention, an upper press block spring is provided between the upper press block and the hot cutter, and applies elastic force to the hot cutter in the height direction.

[0022] Furthermore, in the press-fitting device described in the present invention, a blanking sleeve extending in the height direction is provided on the lower pressing block, and a lower pressing block spring is provided between the blanking sleeve and the lower pressing block, which applies elastic force to the blanking sleeve in the height direction.

[0023] Furthermore, in the press-fitting device described in the present invention, the blanking sleeve has a guiding inclined surface and an opening for discharging materials.

[0024] Furthermore, in the press-fitting device of the present invention, the feeding assembly comprises:

[0025] A feeding rack extending along the width direction of the workbench, wherein the hot melt nuts are sequentially arranged in the feeding rack along the length direction of the feeding rack;

[0026] A push rod, which is movably arranged on the feeding rack and can move along the length direction of the feeding rack, and the rear end of the push rod abuts against the hot-melt nut being conveyed;

[0027] The pulleys are arranged in pairs and are respectively arranged on both sides of the width direction of the feeding rack. A pull rope is wound around each pulley. The tail end of the pull rope is connected to a counterweight element, and the head end of the pull rope is connected to the head end of the push rod.

[0028] Furthermore, in the press-fitting device of the present invention, the thermal press head driving assembly comprises:

[0029] An inner gear ring with teeth on its inner ring, which is rotatably arranged on the workbench;

[0030] an external gear, which is disposed in the inner gear ring and meshes with the inner gear ring;

[0031] The upper rack and the lower rack are respectively arranged on both sides of the outer gear and meshed with the outer gear respectively. The lower end of the upper rack is provided with a horizontally extending cantilever, and the tail end of the cantilever is provided with a vertical rod. The hot pressing head is arranged on the vertical rod, and the lower rack is connected with a support ring.

[0032] Furthermore, in the press-fitting device of the present invention, the positioning assembly comprises:

[0033] An adjusting rod, the tail end of which is sleeved on the vertical rod through a hole, and the adjusting rod can rotate around the axis of the vertical rod;

[0034] An adjusting slider, which is slidably disposed on the adjusting rod and can move along the length direction of the adjusting rod;

[0035] The tail end of the positioning rod passes through the hole of the adjusting slider and is slidably connected thereto, and the head end of the positioning rod is tapered so as to be inserted into the hole on the fixed plate. A limiting pin is provided at the tail end of the positioning rod.

[0036] Furthermore, in the pressing device described in the present invention, a positioning rod spring is provided between the adjusting slider and the positioning rod, which applies elastic force to the positioning rod in the height direction; and / or a positioning screw hole is provided at the tail end of the adjusting rod, and a positioning screw is provided in the positioning screw hole to fix the angle of rotation of the adjusting rod relative to the vertical rod.

[0037] The press-fitting device of the present invention can realize automatic press-fitting of hot-melt nuts, and has high press-fitting accuracy, high production efficiency, low skill requirements for operators, and good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the three-dimensional structure of the press-fitting device described in the present invention in one embodiment is shown.

[0039] Figure 2 A schematic three-dimensional structure diagram of the press-fitting device of the present invention in one embodiment is shown from another viewing angle.

[0040] Figure 3 The three-dimensional structural schematic diagram of the press-fitting device described in the present invention is partially shown.

[0041] Figure 4 for Figure 3 A partial enlarged view of point VII in the middle.

[0042] Figure 5 for Figure 2 A partial enlarged view of point VI in the middle.

[0043] Figure 6 for Figure 1 A partial enlarged view of point IV in the middle.

[0044] Figure 7 The structure of an upper pressing block of the pressing device described in the present invention is shown in one embodiment.

[0045] Figure 8 A front view of a press-fitting device according to the present invention is shown in one embodiment.

[0046] Fig. 9 for Figure 8 A partial enlarged view of point II in the middle.

[0047] Fig.10 for Figure 2 A partial enlarged view of point I in the middle.

[0048] Fig.11 for Figure 1 A partial enlarged view of the V in the middle.

[0049] Fig.12 A partial structural schematic diagram of a hot pressing head driving assembly of the press-fitting device described in the present invention is shown in one embodiment.

[0050] Fig.13 for Figure 8 A partial enlarged view of point III in the middle. DETAILED DESCRIPTION

[0051] The press-fitting device of the present invention will be further explained and illustrated below in conjunction with the accompanying drawings and specific embodiments of the specification. However, such explanation and illustration do not constitute an improper limitation on the technical solution of the present invention.

[0052] Figure 1 A schematic diagram of the three-dimensional structure of the press-fitting device described in the present invention in one embodiment is shown.

[0053] Figure 2 A schematic structural diagram of the press-fitting device of the present invention in one embodiment is shown from another perspective.

[0054] like Figure 1 and Figure 2As shown, in some embodiments, the press-fitting device for installing hot melt nuts may include: a workbench 1; a sheet rack 2 for placing a sheet material P, which is arranged on the workbench along the length direction of the workbench 1; and a punching assembly 3, which is arranged on the workbench 1 for processing holes in the sheet material.

[0055] Figure 3 The three-dimensional structural schematic diagram of the press-fitting device described in the present invention is partially shown.

[0056] Figure 4 for Figure 3 A partial enlarged view of point VII in the middle.

[0057] like Figure 3 and Figure 4 As shown, the punching assembly 3 includes an upper pressing block 32 and a lower pressing block 33 which move relative to each other in the height direction. The upper pressing block 32 is provided with a hot cutting knife 34, and the hot cutting knife 34 is connected to the hole of the upper pressing block through a hole-axis fit. The upper pressing block and the lower pressing block can move relative to each other in the height direction, thereby processing a hole on the sheet material P.

[0058] Continue reading Figure 1 and Figure 2 The press-fitting device of the present invention further comprises: a positioning assembly 4, which is arranged on the workbench 1 and is configured to fix the position of the hole on the sheet material P; a feeding assembly 5, which is configured to convey the hot melt nut Q to the press-fitting station along the width direction of the workbench 1; a press-fitting assembly 6, which includes a hot pressing head 63 (such as Figure 5 As shown) and a thermal head drive assembly, such as Figure 5 As shown, the press-fitting assembly 6 is associated with the positioning assembly 4 so that after the positioning assembly 4 positions the hole on the sheet material, the feeding assembly 5 is fed into the hot melt nut Q at the press-fitting station and pressed into the hole.

[0059] In some more specific embodiments, the workbench 1 is supported by the columns at its lower portion.

[0060] In some more specific embodiments, the sheet rack has a plurality of sub-racks, each of which has a square hole, so that the sheet P can freely shuttle through the square holes of the sub-racks.

[0061] In some more specific embodiments, Figure 1 , Figure 2 and Figure 6 As shown, the punching assembly 3 may also include:

[0062] The pressing block guide rail 381 is vertically arranged, and the upper pressing block 32 and the lower pressing block 33 are slidably arranged on the pressing block guide rail 381 through their respective dovetail sliders 322; the driving rod 382 is arranged on the workbench 1 through the driving rod guide bracket 384, so that it can move in the height direction; the lever 383 is rotatably arranged on the workbench 1 through the lever shaft arranged on the lever bearing seat 31; the upper parallel rod 385, the tail end of which and the upper end of the lever 383 are hinged with the lower end of the driving rod 382 at the same hinge point, and the head end of the upper parallel rod 385 is provided with a first slide groove extending along the length direction of the upper parallel rod, such as Figure 7 As shown, the tail end of the upper pressure block 32 is slidably disposed in the first slide groove through the upper pressure block pin 321; the lower parallel rod 386, the tail end of which is hinged to the lower end of the lever 383, the head end of the lower parallel rod 386 is provided with a second slide groove extending along the length direction of the lower parallel rod, and the tail end of the lower pressure block 33 is slidably disposed in the second slide groove through the lower pressure block pin.

[0063] In some embodiments, the press-fitting device may further include a handle 7, which is connected to the hot pressing head drive assembly to drive the hot pressing head drive assembly to move. At the same time, the upper end of the drive rod 382 has a drive rod slot extending in the length direction of the workbench, and the handle is provided with a pin 71, which is slidably arranged in the drive rod slot, so that the movement of the handle can simultaneously drive the hot pressing head drive assembly and the drive rod to move.

[0064] Figure 8 A front view of a press-fitting device according to the present invention is shown in one embodiment.

[0065] Fig. 9 for Figure 8 A partial enlarged view of point II in the middle.

[0066] like Figure 8 , Fig. 9 and Figure 4 As shown, in some more specific embodiments, an upper pressing block spring 35 is further provided between the upper pressing block 32 and the hot cutter 34, which applies elastic force to the hot cutter in the height direction. A blanking sleeve 36 extending in the height direction is provided on the lower pressing block 33, and the blanking sleeve is movably connected in the hole of the lower pressing block through the hole shaft, and can slide up and down. The tails of the upper pressing block and the blanking sleeve are fixedly connected with a limit pin. A lower pressing block spring 37 is provided between the blanking sleeve 36 and the lower pressing block 33, which applies elastic force to the blanking sleeve 36 in the height direction. The circular ring opening D of the blanking sleeve 36 and the hot cutter 34 are both designed to be knife-edge-shaped, which is convenient for cutting into plastic sheets.

[0067] In addition, in some more preferred embodiments, Figure 4As shown, the blanking sleeve 36 has a guide slope 361 and an opening 362 for discharging. The guide slope 361 of the blanking sleeve is directly opposite to the blanking sleeve opening, so as to facilitate the discharge of the cut waste.

[0068] In some more specific embodiments, Figure 2 and Fig.10 As shown, the feeding assembly 5 comprises:

[0069] The feed rack 51 extends along the width direction of the workbench, and the hot melt nuts Q are arranged in sequence in the feed rack along the length direction of the feed rack. The bottom plate of the feed rack 51 has a circular hole at the press-fitting station (i.e., directly below the hot press head), so as to ensure that the hot melt nuts Q can be aligned with the pre-processed holes H and pressed into the sheet material (such as Fig.13 The push rod 52 is movably connected to the feeding frame 51 through the hole at the rear end thereof and can move along the length direction of the feeding frame, wherein the rear end of the push rod 52 abuts against the hot melt nut Q being transported; the pulleys 53 are arranged in pairs, which are respectively arranged on both sides of the feeding frame in the width direction through the brackets 54, and each pulley 53 is wound with a pull rope 55, the rear end of the pull rope is connected to a counterweight element 56, and the head end of the pull rope 55 is connected to the head end of the push rod 52.

[0070] In some more specific embodiments, Figure 2 and Fig.11 As shown, the thermal head drive assembly includes:

[0071] The inner ring gear 65 is provided with teeth, and is rotatably arranged on the workbench 1 through the inner gear bearing seat 61, so as to be able to rotate around the inner gear ring shaft 651; the outer gear 66 is rotatably arranged on the workbench through the outer gear bearing seat 62, so as to be able to rotate around the outer gear shaft 661, and the outer gear 66 is arranged in the inner ring gear and meshes with the inner ring gear 65; the upper rack 67 and the lower rack 68 are respectively arranged on both sides of the outer gear 66 and mesh with the outer gear respectively. The upper rack 67 and the lower rack 68 are movably connected through the dovetail groove and the rack guide 69.

[0072] In addition, if Fig.12 As shown, a horizontally extending cantilever 64 is provided at the lower end of the upper rack, a vertical rod 641 is provided at the tail end of the cantilever, the hot pressing head 63 is sleeved on the vertical rod 641, and the lower rack 68 is connected to a support ring 681.

[0073] In some more specific embodiments, Figure 5 and Fig.13 As shown, the positioning component 4 may include:

[0074] The rear end of the adjusting rod 41 is sleeved on the vertical rod 641 through a hole, and the adjusting rod 41 can rotate around the axis of the vertical rod 641; when rotated to a required angle, the positioning screw 44 is screwed into the positioning screw hole at the rear end of the adjusting rod to fix the angle.

[0075] The adjusting slider 42 is slidably disposed on the adjusting rod 41 and can move along the length direction of the adjusting rod. When it moves to a desired position, the fixing screw 45 is screwed into the positioning screw hole of the adjusting slider, thereby fixing the position of the adjusting slider relative to the adjusting rod.

[0076] In the above-fixed position, the positioning rod 43 can be inserted into the hole on the fixed plate, wherein the tail end of the positioning rod passes through the hole of the adjustment slider 42 and is slidably connected with it, and its head end is tapered 431 so that it can be inserted into the hole. The tail end of the positioning rod is also provided with a limit pin 432 for limiting the height direction.

[0077] In addition, in some more specific embodiments, a positioning rod spring 46 is provided between the adjusting slider 42 and the positioning rod 43 , and applies elastic force to the positioning rod in the height direction.

[0078] When the press-fitting device described in the present invention is in use: the hot cutter and the hot pressing head are powered on for heating. The positions of the components in the positioning assembly are located and then locked. The hot melt nut is placed on the feed rack, and the positions of the push rod, pulley, pull rope and counterweight element are adjusted to realize automatic loading of the hot melt nut. The handle is pressed downward to drive the inner gear ring, outer gear, upper rack and lower rack to move. The hot pressing head is moved downward to press the hot melt nut on the feed rack into the sheet material through the circular hole at the bottom of the feed rack, and at the same time, the support ring moves upward to support the periphery of the pressed hot melt nut.

[0079] At the same time, the downward movement of the handle will also drive the lever to rotate through the driving rod, and the lever will drive the lower parallel rod to move upward and the upper parallel rod to move downward, so that the upper pressure block will move downward and the lower pressure block will move upward. The upper pressure block squeezes the upper pressure block spring to drive the hot cutter to move downward and cut a round hole in the sheet. The lower pressure block squeezes the lower pressure block spring upward, and the blanking sleeve cooperates with the hot cutter to cut the round hole in the sheet, and falls from the opening on one side of the blanking sleeve through the guide slope. Lift the handle and continue to feed the sheet. Align the hole that has been pressed into the hot melt nut with the positioning rod to achieve the positioning effect on the position of the subsequent holes.

[0080] It can be seen that the press-fitting device described in the present invention can realize the automatic press-fitting of hot-melt nuts, and has high press-fitting accuracy, high production efficiency, low skill requirements for operators, and good reliability.

[0081] It should be noted that the prior art in the protection scope of the present invention is not limited to the embodiments given in the present application documents. All prior art that does not contradict the solutions of the present invention, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the present invention.

[0082] In addition, the combination of the various technical features in this case is not limited to the combination described in the claims of this case or the combination described in the specific embodiments. All technical features recorded in this case can be freely combined or combined in any way unless there is a contradiction between them.

[0083] It should also be noted that the above-listed embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and similar changes or modifications made therewith can be directly derived or easily associated with by those skilled in the art from the contents disclosed in the present invention, and all should belong to the protection scope of the present invention.

Claims

1. A press-fitting device for installing a hot melt nut, characterized in that: include: Workbench; A sheet material rack for placing sheets, which is arranged on the workbench along the length direction of the workbench; A punching assembly is arranged on the workbench, the punching assembly comprises an upper pressing block and a lower pressing block which move relative to each other in the height direction, the upper pressing block is provided with a hot cutter, the upper pressing block and the lower pressing block move relative to each other in the height direction, so as to process holes on the sheet material; A positioning assembly is disposed on the workbench and is configured to fix the position of the hole on the sheet material; A feeding assembly, which is configured to feed the hot melt nut to the press-fitting station along the width direction of the workbench; The press-fitting assembly includes a hot pressing head and a hot pressing head driving assembly. The press-fitting assembly is associated with the positioning assembly so that after the positioning assembly positions the hole on the sheet material, the hot-melt nut sent by the feeding assembly to the press-fitting station is pressed into the hole.

2. The press-fitting device according to claim 1, characterized in that: The punching assembly also includes: A vertically arranged pressing block guide rail, on which the upper pressing block and the lower pressing block are slidably arranged; a driving rod capable of moving in a height direction; A lever, which is rotatably disposed on the workbench via a lever shaft; An upper parallel rod, the tail end of which and the upper end of the lever are hinged with the lower end of the driving rod at the same hinge point, the head end of the upper parallel rod is provided with a first slide groove extending along the length direction of the upper parallel rod, and the tail end of the upper pressing block is slidably arranged in the first slide groove; The tail end of the lower parallel rod is hinged to the lower end of the lever, the head end of the lower parallel rod is provided with a second slide groove extending along the length direction of the lower parallel rod, and the tail end of the lower pressing block is slidably arranged in the second slide groove.

3. The press-fitting device according to claim 1, characterized in that: It also includes a handle, which is connected to the hot pressure head driving assembly to drive the hot pressure head driving assembly to operate; the upper end of the driving rod has a driving rod groove extending in the length direction of the workbench, and the handle is provided with a pin, which can be slidably arranged in the driving rod groove.

4. The press-fitting device according to claim 1, characterized in that: An upper pressing block spring is arranged between the upper pressing block and the hot cutting knife, and applies elastic force to the hot cutting knife in the height direction.

5. The press-fitting device according to claim 1, characterized in that: The lower pressing block is provided with a blanking sleeve extending in the height direction, and a lower pressing block spring is provided between the blanking sleeve and the lower pressing block, which applies elastic force to the blanking sleeve in the height direction.

6. The press-fitting device according to claim 5, characterized in that: The blanking sleeve has a guiding inclined surface and an opening for discharging materials.

7. The press-fitting device according to claim 1, characterized in that: The feeding assembly comprises: A feeding rack extending along the width direction of the workbench, wherein the hot melt nuts are sequentially arranged in the feeding rack along the length direction of the feeding rack; A push rod, which is movably arranged on the feeding rack and can move along the length direction of the feeding rack, and the rear end of the push rod abuts against the hot-melt nut being conveyed; The pulleys are arranged in pairs and are respectively arranged on both sides of the width direction of the feeding rack. A pull rope is wound around each pulley. The tail end of the pull rope is connected to a counterweight element, and the head end of the pull rope is connected to the head end of the push rod.

8. The press-fitting device according to claim 1, characterized in that: The thermal pressure head driving assembly comprises: An inner gear ring with teeth on its inner ring, which is rotatably arranged on the workbench; an external gear, which is disposed in the inner gear ring and meshes with the inner gear ring; The upper rack and the lower rack are respectively arranged on both sides of the outer gear and meshed with the outer gear respectively. The lower end of the upper rack is provided with a horizontally extending cantilever, and the tail end of the cantilever is provided with a vertical rod. The hot pressing head is arranged on the vertical rod, and the lower rack is connected with a support ring.

9. The press-fitting device according to claim 8, characterized in that: The positioning component comprises: An adjusting rod, the tail end of which is sleeved on the vertical rod through a hole, and the adjusting rod can rotate around the axis of the vertical rod; An adjusting slider, which is slidably disposed on the adjusting rod and can move along the length direction of the adjusting rod; The tail end of the positioning rod passes through the hole of the adjusting slider and is slidably connected thereto, and the head end of the positioning rod is tapered so as to be inserted into the hole on the fixed plate. A limiting pin is provided at the tail end of the positioning rod.

10. The press-fitting device according to claim 9, characterized in that: A positioning rod spring is provided between the adjusting slider and the positioning rod, which applies elastic force to the positioning rod in the height direction; and / or a positioning screw hole is provided at the tail end of the adjusting rod, and a positioning screw is provided in the positioning screw hole to fix the angle of rotation of the adjusting rod relative to the vertical rod.

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