Multi-point welding device for light guide column

Abstract

The invention discloses a light guide column multi-point welding device, and relates to the field of plastic shell welding, the light guide column multi-point welding device comprises an upper tool plate and a lower tool plate, the top surface of the lower tool plate is provided with a lower tool groove, the upper tool plate is arranged right above the lower tool plate, the top surface of the upper tool plate is provided with an upper tool groove, the upper tool groove is matched with an upper plastic shell, and the upper plastic shell is arranged right above the upper tool groove. A lower supporting plate slidably penetrates through the inner wall of the upper tool groove, a welding mechanism is arranged between the upper tool plate and the lower tool plate and comprises a long driving plate, a welding plate and a mounting column, the mounting column has the freedom degree of moving in the horizontal direction, one end of the long driving plate is connected with the mounting column, and the other end of the long driving plate is connected with the welding plate; the upper tool plate and the driving long plate have the freedom degree of moving in the height direction of the installation column, the welding plate is installed on the driving long plate, the multiple copper heating pipes are fixedly arranged on the welding plate in a penetrating mode, the multiple copper heating pipes correspond to welding point positions of the plastic shell in a one-to-one mode, connection of all the welding point positions of the plastic shell can be completed at a time, and the welding efficiency of the plastic shell is improved. And the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic housing welding, and specifically relates to a multi-point welding device for light guide columns. Background Art

[0002] At present, in the assembly production of plastic products, the hot melt technology is widely used, and the hot melt effect has a direct relationship with the overall quality of plastic products. For communication plastic housings, it is necessary to hot melt connect the light guide columns of the upper housing and the lower housing together. Currently, soldering irons are basically used for welding, and only one welding point of the light guide column can be welded at a time, which requires more labor costs and has low production efficiency. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-point welding device for light guide columns to solve the deficiencies of the prior art.

[0004] The purpose of the present invention is achieved through the following technical solutions: A multi-point welding device for light guide columns includes an upper tooling plate and a lower tooling plate. A lower tooling groove is provided on the top surface of the lower tooling plate, and the lower tooling groove matches the lower plastic housing. The upper tooling plate is arranged directly above the lower tooling plate, and the upper tooling plate has a degree of freedom of moving in the vertical direction. An upper tooling groove is provided on the top surface of the upper tooling plate, and the upper tooling groove matches the upper plastic housing. A lower support plate is slidably penetrated through the inner wall of the upper tooling groove. A welding mechanism is arranged between the upper tooling plate and the lower tooling plate. The welding mechanism includes a driving long plate, a welding plate, and a mounting column. The mounting column has a degree of freedom of moving in the horizontal direction. One end of the driving long plate is connected to the mounting column, and the driving long plate has a degree of freedom of moving in the height direction of the mounting column. The welding plate is installed on the driving long plate, and a plurality of copper heating tubes are fixedly penetrated through the welding plate. The plurality of copper heating tubes correspond one-to-one to the welding points of the plastic housing.

[0005] Further, a lower limiting mechanism is arranged on the lower tooling plate. The lower limiting mechanism includes limiting pieces. The limiting pieces are slidably penetrated through the four side walls of the lower tooling groove, and the plurality of limiting pieces are used to tightly press the lower plastic housing in the lower tooling groove.

[0006] Further, an installation groove is provided at the position of the lower tooling groove corresponding to the limiting piece, and a spring is arranged in the installation groove. One end of the limiting piece is slidably fitted in the installation groove and connected to the spring.

[0007] Further, a wedge-shaped surface is provided on the top surface of the end of the limiting piece away from the spring. When the spring is in a normal state, the limiting piece is fitted in the lower tooling groove of the lower plastic housing.

[0008] Furthermore, the lower limit mechanism further includes a knob and a wire. A wire winding cavity is provided in the lower tooling plate. The knob is rotatably connected to the lower tooling plate, and one end of the knob extends into the wire winding cavity. A wire cavity is provided in the lower tooling plate, and each installation groove is correspondingly provided with a wire cavity. The two ends of the wire cavity are respectively communicated with the wire winding cavity and the corresponding installation groove. One end of the wire is connected to the limit piece, and the other end is wound around the knob. A fixed pulley is arranged in the wire cavity, and the wire adjusts its direction through the fixed pulley.

[0009] Furthermore, the welding mechanism further includes a bottom plate. A horizontal sliding groove is formed in the bottom plate. The bottom of the installation column is slidably adapted in the horizontal sliding groove. A horizontal cylinder is installed on the bottom plate, and the telescopic shaft of the horizontal cylinder is connected to the installation column.

[0010] Furthermore, a vertical sliding groove is formed in the side wall of the installation column. A lead screw is rotatably arranged in the vertical sliding groove. A lead screw slider is threadedly sleeved on the lead screw. The lead screw slider is slidably adapted to the vertical sliding groove. One end of the driving long plate is connected to the lead screw slider. A motor is installed on the top of the installation column, and the output shaft of the motor is drivingly connected to the lead screw.

[0011] Furthermore, the copper heating tube is hollow. A heat insulation ring is fixed in the copper heating tube. A positioning pin is fixedly penetrated through the heat insulation ring. Both ends of the positioning pin respectively penetrate out of both ends of the copper heating tube. The diameters of both ends of the positioning pin gradually decrease along the direction away from the copper heating tube. There is a gap between the outer wall of the positioning pin and the inner wall of the copper heating tube.

[0012] Furthermore, an adjusting circular groove is formed in the bottom of the welding plate. A fine adjustment shaft is fixed on the driving long plate. The fine adjustment shaft is coaxially arranged in the adjusting circular groove. A plurality of telescopic rods are circumferentially arranged in the adjusting circular groove. Both ends of the telescopic rod are respectively connected to the welding plate and the fine adjustment shaft. A fine adjustment spring is sleeved on the telescopic rod.

[0013] Furthermore, a lifting cylinder is vertically arranged between the upper tooling plate and the lower tooling plate. The cylinder body of the lifting cylinder is installed on the lower tooling plate, and the telescopic shaft of the lifting cylinder is connected to the upper tooling plate.

[0014] The beneficial effects of the present invention are:

[0015] The two ends of the copper heating tube are respectively heat-melted to the light guide columns of the upper plastic housing and the lower plastic housing, and then the welding mechanism moves away. The upper tooling plate moves close to the lower tooling plate, so that the light guide columns of the upper plastic housing and the lower plastic housing are heat-melted and connected together. The position and quantity of the copper heating tubes are set according to the welding points, so that the plastic housing can complete the connection of all welding points at one time, improving the production efficiency and reducing the labor cost. Brief Description of the Drawings

[0016] Figure 1 Structural schematic of a multi-point welding device for light guide columns of the present invention Figure 1 ;

[0017] Figure 2 Structural schematic of a multi-point welding device for light guide columns of the present invention Figure 2 ;

[0018] Figure 3 Internal structural schematic of the lower tooling plate in a multi-point welding device for light guide columns of the present invention;

[0019] Figure 4 Structural schematic of the welding plate in a multi-point welding device for light guide columns of the present invention;

[0020] Figure 5 Installation schematic of the welding plate and the driving long plate in a multi-point welding device for light guide columns of the present invention;

[0021] In the figure, 1 - upper tooling plate, 2 - lower tooling plate, 3 - lower tooling groove, 4 - upper tooling groove, 5 - lower support plate, 6 - driving long plate, 7 - welding plate, 8 - copper heating tube, 9 - mounting post, 10 - limiting piece, 11 - mounting groove, 12 - spring, 13 - wedge surface, 14 - knob, 15 - wire, 16 - wire winding cavity, 17 - circuit cavity, 18 - fixed pulley, 19 - bottom plate, 20 - horizontal sliding groove, 21 - horizontal cylinder, 22 - vertical sliding groove, 23 - lead screw, 24 - lead screw slider, 25 - motor, 26 - heat insulation ring, 27 - positioning pin, 28 - adjusting circular groove, 29 - fine adjustment shaft, 30 - fine adjustment spring, 31 - telescopic rod, 32 - lifting cylinder. Detailed Description of the Embodiment

[0022] The technical solution of the present invention will be further described in detail below with reference to the drawings, but the protection scope of the present invention is not limited to the following.

[0023] Embodiment 1

[0024] As Figures 1 to 5As shown in the figure, a multi-point welding device for a light guide column includes an upper tooling plate 1 and a lower tooling plate 2. A lower tooling groove 3 is formed on the top surface of the lower tooling plate 2, and the lower tooling groove 3 matches the lower plastic housing. The upper tooling plate 1 is arranged directly above the lower tooling plate 2, and the upper tooling plate 1 has a degree of freedom of moving in the vertical direction. An upper tooling groove 4 is formed on the top surface of the upper tooling plate 1, and the upper tooling groove 4 matches the upper plastic housing. A lower support plate 5 is slidably inserted through the inner wall of the upper tooling groove 4, and a lower support plate 5 is slidably arranged on each inner side wall of the upper tooling groove 4. The upper tooling groove 4 is formed through. The lower support plate 5 is used to be inserted into the tooling groove on the side wall of the upper plastic housing, so as to complete the tooling of the upper plastic housing. A welding mechanism is arranged between the upper tooling plate 1 and the lower tooling plate 2. The welding mechanism includes a driving long plate 6, a welding plate 7 and a mounting column 9. The mounting column 9 has a degree of freedom of moving in the horizontal direction. One end of the driving long plate 6 is connected to the mounting column 9, and the driving long plate 6 has a degree of freedom of moving in the height direction of the mounting column 9. The welding plate 7 is installed on the driving long plate 6. A plurality of copper heating tubes 8 are fixedly inserted through the welding plate 7. The plurality of copper heating tubes 8 correspond to the welding points of the plastic housing one by one. First, the plastic housing is loaded. When loading, the welding mechanism moves to the side of the upper tooling plate 1, which does not affect the loading operation of the plastic housing. Then, the upper plastic housing and the lower plastic housing are respectively placed in the upper tooling groove 4 and the lower tooling groove 3. The light guide column of the lower plastic housing is arranged upward, and the light guide column of the upper plastic housing passes through the upper tooling groove 4 downward. Then, the mounting column 9 drives the welding plate 7 to move between the upper tooling plate 1 and the lower tooling plate 2, so that the copper heating tubes 8 correspond to the light guide columns. Then, the driving long plate 6 moves downward, and at the same time, the upper tooling plate 1 moves downward, so that the bottom of the copper heating tube 8 contacts the light guide column of the lower plastic housing, and the light guide column of the upper plastic housing contacts the top of the copper heating tube 8. The two ends of the copper heating tube 8 are used to heat the light guide columns of the upper plastic housing and the lower plastic housing by hot melting respectively. Then, the welding mechanism moves away, and the upper tooling plate 1 moves close to the lower tooling plate 2, so that the light guide columns of the upper plastic housing and the lower plastic housing are hot-melt connected together. The position and quantity of the copper heating tubes are set according to the welding points, so that the plastic housing can complete the connection of all welding points at one time, improving the production efficiency and reducing the labor cost. Specifically, when implementing, the upper tooling plate 1 is provided with a notch at the position where the lower support plate 5 is arranged. A connecting spring is arranged in the notch. One end of the lower support plate 5 is slidably adapted in the notch and connected to the spring. The top surface of the lower support plate 5 is provided with an inclined surface. When tooling the upper plastic housing, the upper plastic housing will squeeze the inclined surface of the lower support plate 5, so that the lower support plate 5 squeezes the connecting spring and moves into the notch. When the tooling groove of the upper plastic housing corresponds to the lower support plate 5, the lower support plate 5 is inserted into the tooling groove under the reaction force of the connecting spring, so as to complete the tooling of the upper plastic housing.

[0025] Further, a lifting cylinder 32 is vertically arranged between the upper tooling plate 1 and the lower tooling plate 2. The cylinder body of the lifting cylinder 32 is installed on the lower tooling plate 2, and the telescopic shaft of the lifting cylinder 32 is connected to the upper tooling plate 1. The upper tooling plate 1 is driven to move up and down by the telescopic movement of the lifting cylinder 32, and the welding operation is completed in cooperation with the welding mechanism.

[0026] Embodiment 2

[0027] On the basis of Embodiment 1, as Figure 1 、 Figure 4 and Figure 5 shown, the welding mechanism further includes a bottom plate 19. A horizontal sliding groove 20 is formed on the bottom plate 19. The bottom of the mounting column 9 is slidably fitted in the horizontal sliding groove 20. A horizontal cylinder 21 is installed on the bottom plate 19. The telescopic shaft of the horizontal cylinder 21 is connected to the mounting column 9. The mounting column 9 is driven to move horizontally by the telescopic movement of the horizontal cylinder 21, so that the mounting column 9 drives the welding plate 7 to move between the upper tooling plate 1 and the lower tooling plate 2 for welding operation, or drives the welding plate 7 to move to one side of the upper tooling plate 1 to facilitate the loading and unloading of the plastic shell; a vertical sliding groove 22 is formed on the side wall of the mounting column 9. A lead screw 23 is rotatably arranged in the vertical sliding groove 22. A lead screw slider 24 is threadedly sleeved on the lead screw 23. The lead screw slider 24 is slidably fitted in the vertical sliding groove 22. One end of the driving long plate 6 is connected to the lead screw slider 24. A motor 25 is installed on the top of the mounting column 9. The output shaft of the motor 25 is drivingly connected to the lead screw 23. The motor 25 drives the lead screw 23 to rotate, so that the lead screw slider 24 drives the driving long plate 6 to move linearly along the axial direction of the lead screw 23, thereby driving the welding plate 7 to move up and down, and making the copper heating tube 8 of the welding plate 7 contact the light guide column of the lower plastic shell for hot melting operation.

[0028] Embodiment 3

[0029] Due to the existence of errors, there is a deviation between the copper heating tube 8 and the light guide column, resulting in insufficient hot melting area of the light guide column and affecting the welding strength. Therefore, on the basis of Embodiment 2, as Figures 1 to 5As shown, the copper heating tube 8 is hollowly arranged, and a heat insulation ring 26 is fixed inside the copper heating tube 8. A positioning pin 27 is fixedly penetrated through the heat insulation ring 26. Both ends of the positioning pin 27 penetrate out from both ends of the copper heating tube 8 respectively. The diameters of both ends of the positioning pin 27 gradually decrease along the direction away from the copper heating tube 8. There is a gap between the outer wall of the positioning pin 27 and the inner wall of the copper heating tube 8. An adjusting circular groove 28 is formed at the bottom of the welding plate 7. A fine-tuning shaft 29 is fixed on the driving long plate 6. The fine-tuning shaft 29 is coaxially arranged in the adjusting circular groove 28. A plurality of telescopic rods 31 are circumferentially arranged in the adjusting circular groove 28. Both ends of the telescopic rod 31 are respectively connected to the welding plate 7 and the fine-tuning shaft 29. A fine-tuning spring 30 is sleeved on the telescopic rod 31. During the process that the welding plate 7 moves downward to make the copper heating tube 8 contact the light guide column, the positioning pin 27 first inserts into the central hole of the light guide column. Since the positioning pin 27 is of a conical structure, when the positioning pin 27 continuously inserts into the central hole, it will generate extrusion with the inner wall of the light guide column. Since both the upper plastic shell and the lower plastic shell clamp the tooling and their positions cannot move, in this extrusion state, the welding plate 7 correspondingly squeezes the fine-tuning spring 30 for position fine-tuning, so that the copper heating tube 8 is coaxially contacted with the light guide column, thereby making the welding have a larger contact area and improving the welding effect and welding strength; the influence of the copper heating tube 8 on the positioning pin 27 is reduced through the heat insulation ring 26. At the same time, there is a gap between the outer wall of the positioning pin 27 and the inner wall of the copper heating tube 8, so that the temperature of the positioning pin 27 will not affect the inner wall of the light guide column.

[0030] Embodiment Four

[0031] Since it is necessary to finely adjust the position of the welding plate 7, a positioning pin 27 is provided, so that there is a relative acting force between the positioning pin 27 and the light guide column, and this acting force will affect the position of the plastic housing. In order not to affect the tooling position of the plastic housing and enable the welding plate 7 to smoothly achieve position fine adjustment, therefore, on the basis of Embodiment 3, a lower limit mechanism is provided on the lower tooling plate 2. The lower limit mechanism includes a limit piece 10. The limit piece 10 is slidably penetrated through the four side walls of the lower tooling groove 3. A plurality of limit pieces 10 are used to tightly press the lower plastic housing in the lower tooling groove 3. Installation grooves 11 are opened at the positions of the lower tooling groove 3 corresponding to the limit pieces 10. Springs 12 are arranged in the installation grooves 11. One end of the limit piece 10 is slidably fitted in the installation groove 11 and connected to the spring 12. A wedge surface 13 is provided on the top surface of the end of the limit piece 10 away from the spring 12. When the spring 12 is in a normal state, the limit piece 10 is fitted in the lower tooling groove of the lower plastic housing. The lower plastic housing is placed in the lower tooling groove 3. During the tooling process, the lower plastic housing will squeeze the wedge surface 13 of the limit piece 10. Under the action of the wedge surface 13, the limit piece 10 squeezes the spring 12 and compresses and moves into the installation groove 11, so that the lower plastic housing can be smoothly fitted into the lower tooling groove 3. After the lower plastic housing is properly fitted, the limit piece 10 is reset under the reaction force of the spring 12, so that the limit piece 10 is inserted into the lower tooling groove of the lower plastic housing, thereby cooperating with the lower tooling groove 3 to complete the tooling of the lower plastic housing, so that the lower plastic housing will not move during the welding process.

[0032] Embodiment 5

[0033] On the basis of Embodiment 4, as Figures 1 to 3As shown, the lower limit mechanism also includes a knob 14 and a pull wire 15. A winding cavity 16 is provided in the lower tooling plate 2. The knob 14 is rotatably connected to the lower tooling plate 2, and one end of the knob 14 extends into the winding cavity 16. A line cavity 17 is provided in the lower tooling plate 2. Each mounting slot 11 is correspondingly provided with a line cavity 17. Both ends of the line cavity 17 are respectively connected to the winding cavity 16 and the corresponding mounting slot 11. One end of the pull wire 15 is connected to the limit plate 10, and the other end is wound around the knob 14. A fixed pulley 18 is provided in the line cavity 17. The pull wire 15 adjusts its direction through the fixed pulley 18. When the welding is completed and the plastic shell needs to be removed, the knob 14 is rotated to make the knob 14 reel in all the pull wires 15 at the same time, so that the pull wire 15 pulls the limit plate 10 to move, so that the limit plate 10 squeezes the spring 12 to move to the mounting position. The upper tooling plate 1 moves upward to drive the plastic shell to separate from the lower tooling groove 3; when the upper plastic shell and the lower plastic shell are welded, the contact position between the upper plastic shell and the lower support plate 5 is on the bottom plane of the lower support plate 5, so that the lower support plate 5 cannot squeeze the connecting spring to move, thereby ensuring that the position of the upper plastic shell does not change during welding. When the upper plastic shell and the lower plastic shell are connected together, the plastic shell is first separated from the lower tooling groove 3, and then the top of the plastic shell is pressed downward to press the plastic shell. The upper plastic shell will continue to squeeze the inclined surface of the lower support plate 5 to move the lower support plate 5 into the notch, thereby separating the plastic shell from the upper tooling plate 1 and completing the blanking operation.

Claims

1. A multi-point welding device for a light guide column, characterized in that It includes an upper tooling plate (1) and a lower tooling plate (2). A lower tooling groove (3) is formed on the top surface of the lower tooling plate (2), and the lower tooling groove (3) matches the lower plastic housing. The upper tooling plate (1) is arranged directly above the lower tooling plate (2), and the upper tooling plate (1) has a degree of freedom to move in the vertical direction. An upper tooling groove (4) is formed on the top surface of the upper tooling plate (1), and the upper tooling groove (4) matches the upper plastic housing. A lower support plate (5) is slidably penetrated through the inner wall of the upper tooling groove (4). A welding mechanism is arranged between the upper tooling plate (1) and the lower tooling plate (2). The welding mechanism includes a driving long plate (6), a welding plate (7) and a mounting column (9). The mounting column (9) has a degree of freedom to move in the horizontal direction. One end of the driving long plate (6) is connected to the mounting column (9), and the driving long plate (6) has a degree of freedom to move in the height direction of the mounting column (9). The welding plate (7) is mounted on the driving long plate (6), and a plurality of copper heating tubes (8) are fixedly penetrated through the welding plate (7). The plurality of copper heating tubes (8) correspond to the welding points of the plastic housing one by one.

2. The multi-point welding device for a light guide column according to claim 1, characterized in that, A lower limiting mechanism is arranged on the lower tooling plate (2). The lower limiting mechanism includes a limiting piece (10). The limiting piece (10) is slidably penetrated through the four side walls of the lower tooling groove (3), and the plurality of limiting pieces (10) are used to tightly press the lower plastic housing in the lower tooling groove (3).

3. The multi-point welding device for a light guide column according to claim 2, characterized in that, An installation groove (11) is formed in the lower tooling groove (3) corresponding to the position of the limiting piece (10), and a spring (12) is arranged in the installation groove (11). One end of the limiting piece (10) is slidably fitted in the installation groove (11) and connected to the spring (12).

4. The multi-point welding device for a light guide column according to claim 3, characterized in that, A wedge surface (13) is arranged on the top surface of the end of the limiting piece (10) away from the spring (12). When the spring (12) is in a normal state, the limiting piece (10) is fitted in the lower tooling groove of the lower plastic housing.

5. A multi-point welding device for a light guide column, according to claim 4, wherein, The lower limiting mechanism further includes a knob (14) and a wire (15). A wire winding cavity (16) is arranged in the lower tooling plate (2). The knob (14) is rotatably connected to the lower tooling plate (2), and one end of the knob (14) extends into the wire winding cavity (16). A wire cavity (17) is arranged in the lower tooling plate (2). Each installation groove (11) is correspondingly provided with a wire cavity (17). The two ends of the wire cavity (17) are respectively communicated with the wire winding cavity (16) and the corresponding installation groove (11). One end of the wire (15) is connected to the limiting piece (10), and the other end is wound around the knob (14). A fixed pulley (18) is arranged in the wire cavity (17), and the wire (15) adjusts the direction through the fixed pulley (18).

6. The multi-point welding device for a light guide rod according to claim 1, wherein, The welding mechanism further includes a bottom plate (19). A horizontal sliding groove (20) is formed in the bottom plate (19). The bottom of the mounting column (9) is slidably fitted in the horizontal sliding groove (20). A horizontal cylinder (21) is mounted on the bottom plate (19), and the telescopic shaft of the horizontal cylinder (21) is connected to the mounting column (9).

7. A multi-point welding device for a light guide column, according to claim 1, characterized in that A vertical sliding groove (22) is formed in the side wall of the mounting column (9). A lead screw (23) is rotatably arranged in the vertical sliding groove (22). A lead screw slider (24) is threadedly sleeved on the lead screw (23). The lead screw slider (24) is slidably fitted in the vertical sliding groove (22). One end of the driving long plate (6) is connected to the lead screw slider (24). A motor (25) is mounted on the top of the mounting column (9), and the output shaft of the motor (25) is drivingly connected to the lead screw (23).

8. A multi-point welding device for a light guide column according to claim 1, characterized in that, The copper heating tube (8) is hollow. A heat insulation ring (26) is fixed in the copper heating tube (8). A positioning pin (27) is fixedly penetrated through the heat insulation ring (26). Both ends of the positioning pin (27) respectively penetrate out of both ends of the copper heating tube (8). The diameters of both ends of the positioning pin (27) gradually decrease along the direction away from the copper heating tube (8). A gap is provided between the outer wall of the positioning pin (27) and the inner wall of the copper heating tube (8).

9. The multi-point welding device for a light guide column according to claim 8, characterized in that, An adjusting circular groove (28) is formed in the bottom of the welding plate (7). A fine adjustment shaft (29) is fixed on the driving long plate (6). The fine adjustment shaft (29) is coaxially arranged in the adjusting circular groove (28). A plurality of telescopic rods (31) are circumferentially arranged in the adjusting circular groove (28). Both ends of the telescopic rod (31) are respectively connected to the welding plate (7) and the fine adjustment shaft (29). A fine adjustment spring (30) is sleeved on the telescopic rod (31).

10. The multi-point welding device for a light guide column according to claim 1, characterized in that, A jacking cylinder (32) is vertically arranged between the upper tooling plate (1) and the lower tooling plate (2). The cylinder body of the jacking cylinder (32) is mounted on the lower tooling plate (2), and the telescopic shaft of the jacking cylinder (32) is connected to the upper tooling plate (1).

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