Hot riveting apparatus for assembling nixie tubes

Abstract

The utility model discloses a hot melt riveting device of nixie tube assembly, including frame, be provided with on frame: feed conveyor, be used for conveying nixie tube workpiece from head section to end section, first piece detection sensor, be located in the front end of end section of feed conveyor along the direction of transmission, be used for detecting the first workpiece of entering end section, last piece detection sensor, be located in the rear end of end section of feed conveyor along the direction of transmission, be used for detecting the last workpiece of end section, hot -pressing platform, be located in the outside of end section of feed conveyor, shift loading component is located in the top of end section of feed conveyor and hot -pressing platform, be used for grabbing the workpiece between first piece detection sensor and last piece detection sensor, and remove to hot -pressing platform, hot -pressing plate is located just above hot -pressing platform, can move towards or away from hot -pressing platform, be used for the hot melt riveting of workpiece. The utility model discloses through first and last sensor positioning control, accurate identification batch workpiece start and stop position, hot -pressing platform integration line arrangement module and column clamping module, realize workpiece full -automatic shaping and hot melt riveting.

Description

Technical Field

[0001] This utility model relates to the field of digital tube assembly equipment, and in particular to a hot-melt riveting device for digital tube assembly. Background Technology

[0002] As a core display component of electronic devices, the assembly process of digital tubes requires fixing the plastic (square) cylindrical shell to the holes of the chip circuit board through thermoforming riveting. The main problems with traditional thermoforming riveting devices for digital tube assembly are: complex design structure, low assembly efficiency, poor versatility for thermoforming riveting of different models of digital tubes, and low positioning accuracy, resulting in substandard riveting quality. Utility Model Content

[0003] In order to overcome the problems of low assembly efficiency, poor versatility and unqualified riveting quality of existing digital tube assembly equipment, the purpose of this utility model is to provide a hot-melt riveting device for digital tube assembly with high hot-melt riveting efficiency and good versatility.

[0004] This utility model discloses a hot-melt riveting device for assembling digital tubes, including a base, on which are provided:

[0005] The feeding conveyor belt is used to transport digital tube workpieces from the beginning section to the end section;

[0006] The first piece detection sensor is located at the front end of the last section of the feed conveyor belt along the conveying direction, and is used to detect the first workpiece entering the last section.

[0007] The last piece detection sensor is located at the rear end of the last section of the feed conveyor belt along the conveying direction, and is used to detect the last piece of workpiece in the last section.

[0008] The hot pressing platform is located on the outside of the end of the feeding conveyor belt;

[0009] The transfer assembly, located at the end of the feed conveyor belt and above the hot press platform, grabs the workpiece between the first and last piece detection sensors and transfers it to the hot press platform.

[0010] The hot press plate, located directly above the hot press platform, can move toward or away from the hot press platform and is used for hot-melt riveting of workpieces.

[0011] Preferably, it also includes a discharge conveyor belt, which is disposed on the side of the feed conveyor belt away from the hot pressing platform, and the conveying direction is the same as that of the feed conveyor belt.

[0012] Preferably, the moving range of the transfer component covers the area between the hot pressing platform and the discharge conveyor belt, and the workpiece after hot-melt riveting is clamped from the hot pressing platform, crossed the feeding conveyor belt and placed on the discharge conveyor belt for output.

[0013] Preferably, the transfer assembly includes:

[0014] The lateral translation module includes an X-axis linear guide rail set parallel to the base platform, and the movement direction is perpendicular to the conveying direction of the feed conveyor belt and the discharge conveyor belt.

[0015] The vertical lifting module is connected to the X-axis linear guide rail of the horizontal translation module via a slider, and its movement direction is perpendicular to the base platform;

[0016] A clamping execution module, fixed to the output end of the vertical lifting module, includes:

[0017] Mounting plate;

[0018] A bidirectional drive motor is fixed to the mounting plate;

[0019] A symmetrical lead screw pair is connected to the output shaft of the bidirectional drive motor, and the two ends of the lead screw are respectively provided with threaded sections with opposite directions of rotation;

[0020] A pair of clamping plates are connected to the corresponding threaded section of the lead screw via a lead screw nut, and open and close synchronously with the rotation of the lead screw.

[0021] Preferably, the clamping plate includes an integrally formed fixing part and a comb-tooth part, wherein the comb-tooth part is composed of a plurality of parallel and spaced-apart racks.

[0022] Preferably, the first piece detection sensor is connected to a position adjustment module for adjusting its detection position along the conveying direction of the feed conveyor belt;

[0023] The position adjustment module includes:

[0024] The base plate is fixed to the machine base platform;

[0025] Linear guide rails are mounted on the base plate, with the guiding direction parallel to the conveying direction of the feed conveyor belt;

[0026] A sliding stage, mounted on the slider of a linear guide rail;

[0027] Precision lead screw mechanism, which includes:

[0028] The precision lead screw is supported on the base plate via a bearing housing;

[0029] A stepper motor is connected to the end of a precision lead screw;

[0030] The lead screw and nut are fixed to the sliding table.

[0031] A sensor bracket, fixed to a sliding stage, is used to support the first detection sensor.

[0032] Preferably, the hot pressing platform is provided with a workpiece shaping mechanism, including:

[0033] Row arrangement module and column clamping module;

[0034] in,

[0035] The row arrangement module includes:

[0036] The T-shaped push plate has a horizontal bar parallel to the conveying direction of the feeding conveyor belt, and a vertical bar connected to the first drive end.

[0037] The square push plate has a first frame parallel to the crossbar and a second frame opposite to it, the second frame being connected to the second drive end;

[0038] The crossbar moves toward the first frame, causing the workpieces to be arranged in a row along the vertical conveying direction;

[0039] The column clamping module includes:

[0040] The first end push rod is located at the beginning of the workpiece arrangement area along the conveying direction;

[0041] The second end push rod is located at the tail end of the workpiece arrangement area along the conveying direction;

[0042] The first end push rod and the second end push rod move toward each other to clamp the two ends of the row of workpieces;

[0043] The movement directions of the row arrangement module and the column clamping module are perpendicular to each other.

[0044] Preferably, the drive module is synchronously connected to the first drive end of the T-shaped push plate and the second drive end of the square push plate, and the drive crossbar moves towards or away from the first frame.

[0045] Preferably, the drive module of the column clamping module includes:

[0046] The first stepper motor drives the first end push rod to move along the column clamping direction via the first lead screw pair;

[0047] The second stepper motor drives the second end push rod to move along the column clamping direction via the second lead screw pair;

[0048] The first stepper motor and the second stepper motor are controlled independently.

[0049] Preferably, a light curtain protection mechanism is provided around the dangerous operating area of ​​the machine base, including:

[0050] The light curtain transmitter and receiver are positioned opposite each other on adjacent sides of the base.

[0051] The protected area covers the hot press plate, the gripping path of the transfer component, the movement range of the shaping mechanism, and the infeed and outfeed conveyor belt.

[0052] Beneficial technical effects:

[0053] This invention features a fully automated design, employing first-piece and last-piece sensors positioned at opposite ends of the feeding conveyor belt to define the start and end positions of the workpiece queue in real time, ensuring high precision in controlling the number of workpieces transferred at a time. Furthermore, a two-dimensional shaping mechanism is integrated into the hot-pressing platform, simultaneously constraining the positions of multiple workpieces for precise positioning and high riveting yield. The design also utilizes space sharing between the feeding and discharge conveyors, reducing the overall footprint of the equipment. Due to the high rate of injury from manual intervention in the hot-pressing area, active safety protection is implemented, with a light curtain covering the hot-pressing plate and the transfer path. Attached Figure Description

[0054] 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.

[0055] Figure 1 This is a schematic diagram of the hot-melt riveting device for assembling digital tubes according to this utility model.

[0056] Figure 2 This is a schematic diagram of the hot-melt riveting device for assembling digital tubes according to another perspective.

[0057] Figure 3 This is a schematic diagram of the transfer component structure of the hot-melt riveting device for assembling digital tubes according to this utility model;

[0058] Figure 4 yes Figure 3 Enlarged diagram of section A in the middle;

[0059] Figure 5 This utility model relates to a position adjustment module for a hot-melt riveting device for assembling digital tubes.

[0060] Figure 6 This utility model relates to a row arrangement module for a hot-melt riveting device for assembling digital tubes.

[0061] Figure 7 This utility model relates to a column clamping module of a hot-melt riveting device for digital tube assembly.

[0062] Figure 8 This is a schematic diagram of the hot press plate structure of the hot-melt riveting device for assembling digital tubes according to this utility model.

[0063] The attached figures are labeled as follows:

[0064] 1. Base; 2. Feed conveyor belt; 21. Head section; 22. End section; 3. First piece detection sensor; 4. Last piece detection sensor; 5. Hot press platform; 6. Transfer assembly; 61. Lateral translation module; 61. X-axis linear guide; 611. Vertical lifting module; 62. Clamping execution module; 63. Mounting plate; 631. Bidirectional drive motor; 632. Symmetrical lead screw pair; 633. Clamping plate; 64. Fixing part; 634a. Comb part; 634b. Hot press plate; 7. Discharge conveyor belt; 8. Position adjustment module. 9; Base plate 91; Linear guide rail 92; Sliding table 93; Precision lead screw 94; Stepper motor 95; Lead screw nut 96; Sensor bracket 97; Shaping mechanism 10; T-shaped push plate 101; Horizontal bar 101a; Vertical bar 101b; Square push plate 102; First frame 102a; Second frame 102b; First end push rod 103; Second end push rod 104; First stepper motor 105; Second stepper motor 106; Light curtain protection mechanism 11. Detailed Implementation

[0065] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0066] Please see Figure 1 , Figure 2 and Figure 8 A hot-melt riveting device for assembling digital tubes includes a base 1, on which are provided: a feeding conveyor belt 2, a hot pressing platform 5, a transfer component 6, a hot pressing plate 7, a discharging conveyor belt 8, a shaping mechanism 10, and a light curtain protection mechanism 11.

[0067] The feeding conveyor belt 2 transports the digital tube workpieces from the first section 21 to the last section 22. At the front end of the last section 22 of the feeding conveyor belt 2, a first-piece detection sensor 3 is installed along the conveying direction to detect the first workpiece entering the last section 22. At the rear end of the last section 22 of the feeding conveyor belt 2, a last-piece detection sensor 4 is installed along the conveying direction to detect the first workpiece entering the last section 22. In this embodiment, the first-piece detection sensor 3 and the last-piece detection sensor 4 can be fiber optic sensors.

[0068] The hot press platform 5 is located on the outside of the end section 22 of the feed conveyor belt 2, and the hot press plate 7 is located directly above the hot press platform 5. The hot press plate 7 is connected to a heater for heating the hot press plate 7. During the hot-melt riveting of the workpiece, the hot press plate 7 can move toward or away from the hot press platform.

[0069] The transfer assembly 6 is located above the end section 22 of the feeding conveyor belt 2 and the hot pressing platform 7. It grabs the workpiece between the first and last piece detection sensors and transfers it to the hot pressing platform 5.

[0070] The discharge conveyor belt 8 is located on the side of the feed conveyor belt 2 away from the hot pressing platform 5, and the conveying direction is the same as that of the feed conveyor belt 2. It is used to convey and output the workpieces that have been hot-melt riveted.

[0071] The moving range of the transfer component 6 covers the area between the hot pressing platform 5 and the discharge conveyor belt 8. It picks up the workpiece after hot fusion riveting from the hot pressing platform 5, crosses the feeding conveyor belt 2, and places it on the discharge conveyor belt 8 for output.

[0072] like Figure 3 As shown, the transfer assembly 6 mainly consists of a lateral translation module 61, a vertical lifting module 62, and a clamping execution module 63. The lateral translation module 61 includes an X-axis linear guide rail 611 parallel to the platform of the base 1, with its movement direction perpendicular to the conveying directions of the feed conveyor belt 2 and the discharge conveyor belt 8. The vertical lifting module 62 is connected to the X-axis linear guide rail 611 of the lateral translation module 61 via a slider, and its movement direction is perpendicular to the platform of the base 1. The clamping execution module 63 is fixed to the output end of the vertical lifting module 62.

[0073] The clamping execution module 63 includes a mounting plate 631 and a bidirectional drive motor 632, which is fixed on the mounting plate 631. It also includes a symmetrical lead screw pair 633 and a pair of clamping plates 634. The symmetrical lead screw pair 633 is connected to the output shaft of the bidirectional drive motor 632, and its two ends are respectively provided with threaded sections with opposite directions of rotation. The paired clamping plates 634 are connected to the corresponding threaded sections of the lead screw through lead screw nuts, and open and close synchronously with the rotation of the lead screw to clamp the workpiece.

[0074] like Figure 4 As shown, the clamping plate 634 includes an integrally formed fixing part 634a and a comb part 634b. The comb part 634b is composed of a plurality of parallel and spaced-apart racks. The comb part 634b of the clamping plate 634 is used to contact the outer surface of the workpiece for clamping and fixing.

[0075] like Figure 5As shown, the first-piece detection sensor 3 is connected to a position adjustment module 9, which is used to adjust its detection position along the conveying direction of the feeding conveyor belt 2. The position adjustment module 9 mainly consists of a base plate 91, a linear guide rail 92, a sliding table 93, a precision lead screw 94, a stepper motor 95, a lead screw nut 96, and a sensor bracket 97. The base plate 91 is fixed to the platform of the machine base 1; the linear guide rail 92 is mounted on the base plate 91, with its guiding direction parallel to the conveying direction of the feeding conveyor belt 2; the sliding table 93 is mounted on the slider of the linear guide rail 92; the precision lead screw 94 is supported on the base plate 91 by a bearing seat; the stepper motor 95 is connected to the end of the precision lead screw 94; the lead screw nut 96 is fixed to the sliding table 93; and the sensor bracket 97 is fixed to the sliding table 93 to support the first-piece detection sensor 3. The precision lead screw 94, the stepper motor 95, and the lead screw nut 96 constitute a precision lead screw mechanism.

[0076] like Figure 6 As shown, a workpiece shaping mechanism 10 is provided on the hot pressing platform 5, including a row arrangement module and a column clamping module. The row arrangement module includes a T-shaped pusher plate 101 and a square pusher plate 102. The T-shaped pusher plate 101 has a horizontal bar 101a parallel to the conveying direction of the feeding conveyor belt 2, and a vertical bar 101b connected to a first drive end. The square pusher plate 102 has a first side frame 102a parallel to the horizontal bar 101a, and a second side frame 102b opposite to it, connected to a second drive end. The horizontal bar 101a and the first side frame 102a move towards each other, arranging the workpieces in a row along the vertical conveying direction. A drive module synchronously connects the first drive end of the T-shaped pusher plate 101 and the second drive end of the square pusher plate 102, driving the horizontal bar 101a and the first side frame 102a to move towards or away from each other.

[0077] like Figure 7 As shown, the column clamping module mainly consists of a first end push rod 103, a second end push rod 104, a first stepper motor 105, and a second stepper motor 106. The first end push rod 103 is located at the beginning of the workpiece arrangement area along the conveying direction; the second end push rod 104 is located at the end of the workpiece arrangement area along the conveying direction. The first end push rod 103 and the second end push rod 104 move towards each other, clamping the two ends of the workpieces in a row. The movement directions of the row arrangement module and the column clamping module are perpendicular to each other. The drive module of the column clamping module also includes a first stepper motor 105 and a second stepper motor 106. The first stepper motor 105 drives the first end push rod 103 to move along the column clamping direction via a first lead screw pair; the second stepper motor 106 drives the second end push rod 104 to move along the column clamping direction via a second lead screw pair. The first stepper motor 105 and the second stepper motor 106 are independently controlled.

[0078] like Figure 1 and Figure 2As shown, a light curtain protection mechanism 11 is provided around the dangerous operating area of ​​the machine base 1. The light curtain protection mechanism 11 includes a light curtain transmitter and a receiver, which are arranged opposite each other on the adjacent side of the machine base. Its protection area covers the hot press plate, the gripping path of the transfer component, the movement range of the shaping mechanism, and the feeding and discharging conveyor belt.

[0079] The specific embodiments described herein are merely illustrative examples of the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A hot-melt riveting device for assembling digital tubes, comprising a base (1), characterized in that, The base (1) is provided with: Feed conveyor belt (2) is used to transport digital tube workpieces from the first section (21) to the last section (22); The first piece detection sensor (3) is located at the front end of the last section (22) of the feed conveyor belt (2) along the conveying direction, and is used to detect the first workpiece entering the last section (22); The last piece detection sensor (4) is located at the rear end of the last section (22) of the feed conveyor belt (2) along the conveying direction, and is used to detect the last piece of workpiece in the last section (22). The hot pressing platform (5) is located on the outside of the end section (22) of the feeding conveyor belt (2); The transfer assembly (6) is located above the end section (22) of the feed conveyor belt (2) and the hot press platform (5), grabs the workpiece between the first and last piece detection sensors, and transfers it to the hot press platform (5); The hot press plate (7) is located directly above the hot press platform (5) and can move toward or away from the hot press platform (5) for hot fusion riveting of workpieces.

2. The hot-melt riveting device according to claim 1, characterized in that: It also includes a discharge conveyor belt (8), which is located on the side of the feed conveyor belt (2) away from the hot pressing platform (5), and the conveying direction is the same as that of the feed conveyor belt (2).

3. The hot-melt riveting device according to claim 2, characterized in that: The moving range of the transfer component (6) covers the area between the hot pressing platform (5) and the discharge conveyor belt (8). The workpiece after hot fusion riveting is clamped from the hot pressing platform (5), crosses the feeding conveyor belt (2), and is placed on the discharge conveyor belt (8) for output.

4. The hot-melt riveting device according to claim 3, characterized in that: The transfer assembly (6) includes: The lateral translation module (61) includes an X-axis linear guide (611) set parallel to the machine base (1) platform, and the movement direction is perpendicular to the conveying direction of the feeding conveyor belt (2) and the discharging conveyor belt (8). The vertical lifting module (62) is connected to the X-axis linear guide rail (611) of the horizontal translation module (61) via a slider, and its movement direction is perpendicular to the base (1) platform; A clamping execution module (63), fixed to the output end of the vertical lifting module (62), includes: Mounting plate (631); A bidirectional drive motor (632) is fixed on a mounting plate (631); A symmetrical lead screw pair (633) is connected to the output shaft of the bidirectional drive motor (632), and its two ends are respectively provided with threaded sections with opposite directions of rotation; A pair of clamping plates (634) are connected to the corresponding threaded section of the screw via a screw nut, and open and close synchronously with the rotation of the screw.

5. The hot-melt riveting device according to claim 4, characterized in that: The clamping plate (634) includes an integrally formed fixing part (634a) and a comb part (634b), the comb part (634b) being composed of a plurality of parallel and spaced-apart racks.

6. The hot-melt riveting device according to claim 1, characterized in that: The first piece detection sensor (3) is connected to a position adjustment module (9) for adjusting its detection position along the conveying direction of the feed conveyor belt (2); The position adjustment module (9) includes: The base plate (91) is fixed to the platform of the base (1); Linear guide rail (92) is mounted on base plate (91) and its guiding direction is parallel to the conveying direction of feed conveyor belt (2); The sliding stage (93) is mounted on the slider of the linear guide (92); Precision lead screw mechanism, which includes: The precision lead screw (94) is supported on the base plate (91) by a bearing seat; A stepper motor (95) is connected to the end of a precision lead screw (94); The lead screw nut (96) is fixed to the sliding table (93); A sensor bracket (97) is fixed to a sliding stage (93) and is used to support the first detection sensor (3).

7. The hot-melt riveting device according to claim 1, characterized in that: The hot pressing platform (5) is provided with a workpiece shaping mechanism (10), including: Row arrangement module and column clamping module; in, The row arrangement module includes: The T-shaped push plate (101) has a horizontal bar (101a) parallel to the conveying direction of the feed conveyor belt (2) and a vertical bar (101b) connected to the first drive end. The square push plate (102) has a first side frame (102a) arranged parallel to the crossbar (101a) and a second side frame (102b) opposite to it, the second side frame (102b) being connected to the second drive end; The crossbar (101a) moves toward the first frame (102a) so that the workpieces are arranged in a row along the vertical conveying direction; The drive module is synchronously connected to the first drive end of the T-shaped push plate (101) and the second drive end of the square push plate (102), and drives the crossbar (101a) and the first frame (102a) to move towards or away from each other. The column clamping module includes: The first end push rod (103) is located at the beginning of the workpiece arrangement area along the conveying direction; The second end push rod (104) is located at the tail end of the workpiece arrangement area along the conveying direction; The first end push rod (103) and the second end push rod (104) move toward each other to clamp the two ends of the workpiece in a row; The movement directions of the row arrangement module and the column clamping module are perpendicular to each other.

8. The hot-melt riveting device according to claim 7, characterized in that: The drive module of the column clamping module includes: The first stepper motor (105) drives the first end push rod (103) to move along the column clamping direction through the first lead screw pair; The second stepper motor (106) drives the second end push rod (104) to move along the column clamping direction via the second lead screw pair; The first stepper motor (105) and the second stepper motor (106) are controlled independently.

9. The hot-melt riveting device according to claim 1, characterized in that: A light curtain protection mechanism (11) is provided around the dangerous operating area of ​​the base, including: The light curtain transmitter and receiver are positioned opposite each other on adjacent sides of the base. The protected area covers the hot press plate, the gripping path of the transfer component, the movement range of the shaping mechanism, and the infeed and outfeed conveyor belt.

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