Screw end face coating jig

Abstract

The utility model relates to a screw end face coating jig which comprises two bottom rods, a transverse rod connected between the two bottom rods, a lifting air cylinder fixedly connected to the transverse rod, a temporary storage supporting plate fixedly connected to the top end of a piston rod of the lifting air cylinder, a positioning transverse strip connected to the top sides of the two bottom rods, and a positioning notch formed in the inner side of the positioning transverse strip. Mounting transverse strips are connected to the top sides of the two bottom rods, clamping air cylinders are fixedly connected to the mounting transverse strips, clamping transverse strips are fixedly connected to piston rods of the clamping air cylinders, clamping notches are formed in the inner sides of the clamping transverse strips, mounting counter bores are formed in the outer side walls of the positioning notches and the outer side walls of the clamping notches, and buffering contact nails slidably penetrate through the mounting counter bores; the head of the buffering contact nail penetrates in and out of the positioning notch / clamping notch, an anti-disengaging limiting edge is arranged at the tail end of the buffering contact nail, a sealing block is fixedly connected to the outer wall of the installation counter bore, and a pre-pressing spring is arranged in the installation counter bore. The screw conveying device can effectively position screws, and it is guaranteed that the screws are not prone to toppling and scattering in the transferring process.

Description

Technical Field

[0001] This utility model relates to the field of metal surface treatment, specifically to a screw end face coating fixture. Background Technology

[0002] After installation, some screws have exposed end faces that are subject to friction or impact, making them prone to scratches or deformation, thus affecting their lifespan. To improve the hardness and wear resistance of these screw end faces, a high-hardness coating can be formed. The process involves first applying a hard coating to the screw end face, and then placing the screw in a sintering furnace for sintering.

[0003] In existing technologies, due to the small size of screws, a large number are required for batch operations, and effective positioning is difficult. This causes screws to easily tip over and spill during transportation, affecting efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a screw end face coating fixture that can effectively position the screw and ensure that the screw is not easily tipped over or spilled during transportation.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A screw end-face coating fixture includes two base rods connected by a crossbar. A lifting cylinder is fixed to the crossbar, and a temporary support plate is fixed to the top of the piston rod of the lifting cylinder. Positioning crossbars are connected to the top sides of the two base rods, with positioning notches on their inner sides. Installation crossbars are also connected to the top sides of the two base rods, and a clamping cylinder is fixed to the installation crossbar. A clamping crossbar is fixed to the piston rod of the clamping cylinder, with a clamping notch on its inner side. Both the positioning notch and the clamping notch have countersunk holes on their outer walls, through which buffer contact pins can slidably pass. The head passes through the positioning notch / clamping notch. The tail end of the buffer contact pin is equipped with an anti-disengagement limiting edge. A sealing block is fixed to the outer wall of the mounting countersunk hole. The mounting countersunk hole is equipped with a preload spring. The two ends of the preload spring abut against the tail end of the buffer contact pin and the sealing block, respectively. There are four side positioning blocks between the positioning crossbar and the clamping crossbar. The four side positioning blocks are symmetrically distributed on the top side of the two bottom rods. The positioning notch and the clamping notch are used to clamp the positioning plate together. The positioning plate has multiple mounting holes, which are arranged in an array. The mounting holes are used to insert screws, and the end face of the screw is on the upper side of the positioning plate.

[0007] Specifically, the head end of the buffer contact pin is arc-shaped, and the tail end of the buffer contact pin is provided with a countersunk hole, into which the end of the preload spring extends.

[0008] Specifically, the sealing block is rectangular, and both ends of the side wall of the sealing block are provided with connecting countersunk holes.

[0009] Specifically, the cross-section of the mounting bar is in the shape of an inverted U, and the clamping cylinder is located in the middle of the top wall of the mounting bar, with the clamping cylinder arranged longitudinally.

[0010] Specifically, both the positioning crossbar and the clamping crossbar have L-shaped cross-sections, and the positioning notch and the clamping notch are on the same horizontal plane.

[0011] Specifically, the lifting cylinder is located on the side wall of the crossbar, and the lifting cylinder is arranged vertically. The top of the piston rod of the lifting cylinder is fixedly connected to the middle of the bottom wall of the temporary storage tray.

[0012] Specifically, the inner wall of the side positioning block is provided with a positioning plane, which is used to make positioning contact with the side wall of the positioning plate.

[0013] Specifically, the bottom wall of the base rod is provided with a T-slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] During the process of positioning notch 31 and clamping notch 421 clamping positioning plate 6 together, the buffer pins 52 provided in positioning notch 31 and clamping notch 421 can flexibly contact the edge of positioning plate 6, play a buffering role, and avoid damaging positioning plate 6.

[0016] After clamping the positioning plate 6, the lifting cylinder 21 moves the temporary storage plate 22 down, and then inserts multiple screws 62 with hard coating on their end faces 621 into the mounting holes 61 of the positioning plate 6 to achieve the positioning of the screws 62.

[0017] The bottom wall of the base rod 1 is provided with a T-slot 12, which can be connected to the transport trolley by screws, thereby installing the base rod 1 onto the transport trolley to realize the transfer of the positioning plate 6. After the positioning plate 6 is moved to the sintering furnace, the positioning plate 6 can be released, and then the positioning plate 6 and the screws 62 inserted thereon can be sent into the sintering furnace to sinter the hard coating layer on the end face 621, thereby forming a hard and wear-resistant coating on the end face 621.

[0018] The positioning plate 6 of this invention can position the screw 62. The positioning notch 31 and the clamping notch 421 can work together to position and clamp the positioning plate 6, thereby ensuring that the screw 62 will not tip over or spill during transfer and transportation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 Overall view of the fixture for coating the screw end face;

[0021] Figure 2 for Figure 1 A partial view;

[0022] Figure 3 A partial view of the fixture for coating the screw end face from a low angle;

[0023] Figure 4 Views of the clamping bar and related structures;

[0024] Figure 5 This is a view of the positioning plate and screws.

[0025] In the picture:

[0026] 1. Base rod; 11. Side positioning block; 111. Positioning plane; 12. T-slot;

[0027] 2. Crossbar; 21. Lifting cylinder; 22. Temporary storage tray;

[0028] 3. Positioning horizontal bar; 31. Positioning notch;

[0029] 4. Install the crossbar; 41. Clamp the cylinder; 42. Clamp the crossbar; 421. Clamp the notch;

[0030] 51. Install countersunk hole; 52. Buffer contact pin; 521. Anti-detachment limiting edge; 522. Tail countersunk hole; 53. Sealing block;

[0031] 6. Positioning plate; 61. Mounting hole; 62. Screw; 621. End face. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] See Figures 1 to 5 A screw end face coating fixture includes two base rods 1, with a crossbar 2 connecting the two base rods 1. A lifting cylinder 21 is fixedly connected to the crossbar 2, and a temporary storage plate 22 is fixedly connected to the top of the piston rod of the lifting cylinder 21.

[0034] Positioning crossbars 3 are connected to the top sides of the two base rods 1, and positioning notches 31 are provided on the inner side of the positioning crossbars 3. Mounting crossbars 4 are connected to the top sides of the two base rods 1, and clamping cylinders 41 are fixedly connected to the mounting crossbars 4. The piston rod of the clamping cylinder 41 is fixedly connected to a clamping crossbar 42, and clamping notches 421 are provided on the inner side of the clamping crossbar 42.

[0035] Both the positioning notch 31 and the clamping notch 421 have mounting countersunk holes 51 on their outer walls. A buffer pin 52 is slidably inserted through the mounting countersunk hole 51, with its head extending into and out of the positioning notch 31 / clamping notch 421. The tail end of the buffer pin 52 has an anti-disengagement limiting edge 521. A sealing block 53 is fixedly connected to the outer wall of the mounting countersunk hole 51. The mounting countersunk hole 51 is equipped with a preload spring (not shown in the figure), with both ends of the preload spring abutting against the tail end of the buffer pin 52 and the sealing block 53, respectively.

[0036] Four side positioning blocks 11 are provided between the positioning crossbar 3 and the clamping crossbar 42, and the four side positioning blocks 11 are symmetrically distributed on the top side of the two bottom rods 1. The positioning notch 31 and the clamping notch 421 are used to clamp the positioning plate 6 together. The positioning plate 6 is provided with multiple mounting holes 61, which are arranged in an array. The mounting holes 61 are used to pass screws 62 through, and the end face 621 of the screws 62 is located on the upper side of the positioning plate 6.

[0037] Specifically, the head end of the buffer contact pin 52 is arc-shaped, and the tail end of the buffer contact pin 52 is provided with a tail countersunk hole 522, and the end of the preload spring extends into the tail countersunk hole 522.

[0038] Specifically, the sealing block 53 is rectangular, and both ends of the side wall of the sealing block 53 are provided with connecting countersunk holes.

[0039] Specifically, the cross section of the mounting bar 4 is in the shape of an inverted U, and the clamping cylinder 41 is located in the middle of the top wall of the mounting bar 4, with the clamping cylinder 41 arranged longitudinally.

[0040] Specifically, the cross sections of both the positioning bar 3 and the clamping bar 42 are L-shaped, and the positioning notch 31 and the clamping notch 421 are on the same horizontal plane.

[0041] Specifically, the lifting cylinder 21 is located on the side wall of the crossbar 2. The lifting cylinder 21 is arranged vertically, and the top of the piston rod of the lifting cylinder 21 is fixedly connected to the middle of the bottom wall of the temporary storage plate 22.

[0042] Specifically, the inner wall of the side positioning block 11 is provided with a positioning plane 111, which is used to make positioning contact with the side wall of the positioning plate 6.

[0043] Specifically, the bottom wall of the bottom rod 1 is provided with a T-slot 12.

[0044] The working principle of this utility model is as follows:

[0045] First, combined Figure 2 , Figure 3 Activate the lifting cylinder 21 to move the temporary storage tray 22 upwards until it is flush with the positioning notch 31. Then, place the positioning plate 6 on the surface of the temporary storage tray 22, so that the two transverse side walls of the positioning plate 6 abut against the positioning planes 111 of the side positioning blocks 11 on both sides (see reference). Figure 3 Then, the positioning plate 6 is slid along the length of the bottom rod 1, so that the front edge of the positioning plate 6 enters the positioning notch 31, and the front edge abuts against the arc-shaped head end of the two buffer contact pins 52 provided on the inner side wall of the positioning notch 31 (e.g., Figure 2 (As shown). Then, the clamping cylinder 41 is activated, causing the clamping crossbar 42 to move forward, thereby allowing the rear edge of the positioning plate 6 to enter the clamping notch 421. As the clamping crossbar 42 continues to move forward, the inner wall of the clamping notch 421 and the inner wall of the positioning notch 31 together clamp the front and rear edges of the positioning plate 6. During this process, the buffer pin 52 is pressed into the inner walls of the clamping notch 421 and the positioning notch 31, and the preload spring (not shown) in the mounting countersunk hole 51 is compressed.

[0046] During the process of positioning notch 31 and clamping notch 421 clamping positioning plate 6 together, the buffer pins 52 provided in positioning notch 31 and clamping notch 421 can flexibly contact the edge of positioning plate 6, play a buffering role, and avoid damaging positioning plate 6.

[0047] After clamping the positioning plate 6, the lifting cylinder 21 moves the temporary storage plate 22 down, and then inserts multiple screws 62 with hard coating on their end faces 621 into the mounting holes 61 of the positioning plate 6 to achieve the positioning of the screws 62.

[0048] The bottom wall of the bottom rod 1 is provided with a T-slot 12 (see...) Figure 3 The T-slot 12 can be connected to the transport trolley via screws, thereby installing the base rod 1 onto the transport trolley to facilitate the transfer of the positioning plate 6. After the positioning plate 6 is moved to the sintering furnace, it can be released, and then the positioning plate 6 and the screws 62 inserted thereon can be sent into the sintering furnace to sinter the hard coating layer on the end face 621, thereby forming a hard, wear-resistant coating on the end face 621.

[0049] The positioning plate 6 of this invention can position the screw 62. The positioning notch 31 and the clamping notch 421 can work together to position and clamp the positioning plate 6, thereby ensuring that the screw 62 will not tip over or spill during transfer and transportation.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A screw end face coating jig, characterized by: The utility model relates to a kind of positioning plate body and its installation device, including two bottom bars, connecting with crossbar between two bottom bars, crossbar is fixedly connected with lifting cylinder, the piston rod top end of lifting cylinder is fixedly connected with temporary storage apron, the top side of two bottom bars is connected with positioning crosspiece, positioning crosspiece inner side is equipped with positioning gap, the top side of two bottom bars is connected with installation crosspiece, installation crosspiece is fixedly connected with clamping cylinder, the piston rod of clamping cylinder is fixedly connected with clamping crosspiece, the inner side of clamping crosspiece is equipped with clamping gap, the outer side wall of positioning gap and clamping gap is equipped with installation counterbore, installation counterbore can be slidably equipped with buffer touch nail, the head of buffer touch nail is in and out positioning gap / clamping gap, the tail end of buffer touch nail is equipped with anti-extraction limiting edge, installation counterbore outer wall is fixedly connected with sealing block, installation counterbore is equipped with pre-press spring, the both ends of pre-press spring are respectively against the tail end of buffer touch nail and sealing block, positioning crosspiece and clamping crosspiece are equipped with four side edge positioning blocks, four side edge positioning blocks are symmetrically distributed in the top side of two bottom bars, positioning gap and clamping gap are used to clamp positioning plate body together, positioning plate body is equipped with multiple installation holes, multiple installation holes are arrayed distribution, installation hole is used to pass screw, and the end face of screw is in the upper side of positioning plate body.

2. The screw end face coating jig according to claim 1, characterized by: The head end of buffer touch nail is arc-shaped, the tail end of buffer touch nail is equipped with tail counterbore, and the end of pre-press spring extends into the tail counterbore.

3. The screw end face coating jig according to claim 1, characterized by: The sealing block is rectangular, and the side wall of the sealing block is equipped with connecting counterbore at both ends.

4. The screw end face coating jig of claim 1, wherein: The cross section of the installation crosspiece is inverted N-shaped, the clamping cylinder is arranged in the middle part of the top wall of the installation crosspiece, and the clamping cylinder is arranged in the longitudinal direction.

5. The screw end face coating jig of claim 1, wherein: The cross section of the positioning crosspiece and the clamping crosspiece is L-shaped, and the positioning gap and the clamping gap are in the same horizontal plane.

6. The screw end face coating jig of claim 1, wherein: The lifting cylinder is arranged in the side wall of the crossbar, and the lifting cylinder is arranged in the vertical direction.

7. The screw end face coating jig of claim 1, wherein: The inner wall of the side edge positioning block is equipped with a positioning plane, and the positioning plane is used for positioning contact with the side wall of the positioning plate body.

8. The screw end face coating jig of claim 1, wherein: The bottom wall of the bottom bar is equipped with a T-shaped groove.

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