An upper and lower cover plate ultrasonic heat welding positioning mechanism

Abstract

The utility model discloses a kind of upper and lower cover plate ultrasonic wave hot welding positioning mechanism, it is related to television loudspeaker welding technical field, the utility model includes mounting plate, bottom die is fixedly arranged on the mounting plate, the positioning slot is opened in the top of bottom die;Jacking plate is slidably arranged in the bottom of positioning slot, the jacking plate lateral wall is rotatably provided with multiple clamps, multiple recesses compatible with clamp are opened in the bottom die;Spring is fixedly arranged between the bottom of each clamp and jacking plate;By push-pull connecting plate, top rod driving lifting plate can be moved up and down, in turn drive jacking plate to lift from positioning slot and descend, when jacking plate is lifted, shell can be lifted from positioning slot and make clamp open, so that shell is conveniently taken down, when jacking plate is lowered, clamp can be closed, so that shell is aligned, conveniently take and place upper and lower cover plate.

Description

Technical Field

[0001] This utility model relates to the field of television speaker welding technology, specifically to an ultrasonic hot welding positioning mechanism for upper and lower cover plates. Background Technology

[0002] The television speaker assembly is the core component of the television's audio system, responsible for converting electrical signals into sound signals to output audio content such as television programs, movies, and music. They are the direct executors of the television's sound-producing function, and their performance directly affects the user's auditory experience. The speaker housing is mainly constructed by welding two plastic covers together, which contain a magnetic circuit system, a vibration system, etc., providing protection and support for the internal components through the two covers.

[0003] In the production of television speakers, the upper and lower cover plates are usually welded together by an ultrasonic plastic welding machine. Ultrasonic welding can fuse the upper and lower plastic cover plates at the molecular level, making them almost a single part, which greatly improves the connection strength. The ultrasonic plastic welding machine mainly consists of components such as an ultrasonic generator, transducer, amplitude transformer, welding head, and bottom mold.

[0004] When using ultrasonic welding to weld the upper and lower cover plates of a TV speaker together, the two cover plates are placed together in a bottom mold, and then the welding head is moved down to press the upper cover plate tightly. The ultrasonic generator is activated to weld the upper and lower cover plates of the housing together. To prevent the housing from shaking during welding, the bottom mold in the existing technology is usually tightly abutted against the housing, while only a small part of the upper cover plate of the housing is exposed from the bottom mold. The operator also needs to wear gloves during operation, which makes it difficult to remove the housing from the bottom mold after welding. At the same time, the housing needs to be completely aligned with the groove of the bottom mold to be inserted into the groove, making it inconvenient to pick up and put down the housing. Utility Model Content

[0005] The purpose of this invention is to provide an ultrasonic thermal welding positioning mechanism for upper and lower cover plates to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultrasonic hot welding positioning mechanism for upper and lower cover plates, including a mounting plate, on which a bottom mold is fixedly mounted, and a positioning groove is provided on the top of the bottom mold; a lifting plate, which is slidably mounted at the bottom of the positioning groove, and multiple clamping plates are rotatably mounted on the side wall of the lifting plate, and multiple grooves adapted to the clamping plates are provided on the bottom mold.

[0007] Preferably, a spring is fixedly installed between the bottom of each clamping plate and the lifting plate.

[0008] Preferably, the bottom mold is provided with a sliding groove, and a lifting plate is fixedly provided at the bottom of the lifting plate, and the lifting plate is slidably disposed in the sliding groove.

[0009] Preferably, the lifting plate is further provided with an inclined groove, and a top rod is slidably disposed in the inclined groove.

[0010] Preferably, the bottom mold has two slots, each slot has a connecting plate slidably disposed therein, the two ends of the top rod are rotatably connected to the ends of each connecting plate, and a tie rod is fixedly disposed between the two connecting plates.

[0011] Preferably, two sliding rods are fixedly installed at the bottom of the lifting plate, and both sliding rods are slidably connected to the bottom mold.

[0012] Preferably, the bottom and sides of the lifting plate are nitrided.

[0013] In the above technical solution, the present invention provides an ultrasonic thermal welding positioning mechanism for upper and lower cover plates, which has the following beneficial effects: by pushing and pulling the connecting plate, the top rod can drive the lifting plate to move up and down, thereby driving the lifting plate to rise and fall from the positioning groove. When the lifting plate rises, it can drive the housing to rise from the positioning groove and open the clamping plate, thereby facilitating the removal of the housing. When the lifting plate falls, it can close the clamping plate, thereby aligning the housing and facilitating the removal and placement of the upper and lower cover plates. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the bottom mold provided in an embodiment of the present utility model;

[0017] Figure 3 A schematic diagram of the structure in which the shell is lifted according to an embodiment of this utility model;

[0018] Figure 4 A schematic diagram of the positioning groove provided in an embodiment of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the lifting plate provided in an embodiment of the present utility model;

[0020] Figure 6This is a schematic diagram of the lifting plate provided in an embodiment of the present utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Mounting plate; 2. Bottom mold; 3. Positioning groove; 4. Slide groove; 5. Groove; 6. Slot; 7. Lifting plate; 8. Fixing frame; 9. Clamping plate; 10. Spring; 11. Slide rod; 12. Lifting plate; 13. Inclined groove; 14. Top rod; 15. Connecting plate; 16. Tie rod; 17. Housing. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Please see Figure 1-6 An ultrasonic hot welding positioning mechanism for upper and lower cover plates is proposed. The proposed technical solution includes a mounting plate 1, on which a bottom mold 2 is fixedly mounted. A positioning groove 3 is formed on the top of the bottom mold 2. A lifting plate 7 is slidably mounted at the bottom of the positioning groove 3. Multiple clamping plates 9 are rotatably mounted on the side wall of the lifting plate 7. Multiple grooves 5 that fit the clamping plates 9 are formed on the bottom mold 2. Multiple bolts are mounted on the mounting plate 1, and the bottom mold 2 is mounted on the worktable of an ultrasonic plastic welding machine via the mounting plate 1. The positioning groove 3 fits the housing 17 formed by the upper and lower cover plates of a television speaker when joined together. The lifting plate 7 has the same shape as the positioning groove 3. Initially, the lifting plate 7 is at the bottom of the positioning groove 3. Fixing frames 8 are fixedly mounted on all four sides of the lifting plate 7. Each clamping plate 9 is rotatably mounted on the fixing frame 8. The width and length of the grooves 5 are matched with the width and length of the fixing frame 8 and the clamping plates 9. When the clamping plates 9 are in the corresponding positions... The clamping plates 9 are attached to the side wall of the groove 5. When in use, the lifting plate 7 is lifted up. When the lifting plate 7 is lifted up, each clamping plate 9 opens outward. At this time, the closed shell 17 is roughly aligned with the lifting plate 7 and placed on the lifting plate 7. Then the lifting plate 7 is lowered. During the descent of the lifting plate 7, each clamping plate 9 abuts against the top of the side wall of the groove 5, so that each clamping plate 9 moves closer to the lifting plate 7 and aligns with the side wall of the lifting plate 7, thereby aligning the shell 17. Then the clamping plates 9 are completely retracted into the corresponding groove 5. At this time, the top of each clamping plate 9 is aligned with the top of the bottom mold 2. The lifting plate 7 also returns to the bottom of the positioning groove 3. The shell 17 enters the positioning groove 3, which facilitates the placement of the shell 17. Then the ultrasonic plastic welding machine is started to weld the upper and lower cover plates of the shell 17 together. When the welding is completed, the lifting plate 7 is lifted up again. The cover plates rise from the positioning groove 3, and each clamping plate 9 opens, which facilitates the removal of the shell 17.

[0025] Specifically, each clamping plate 9 is fixedly provided with a spring 10 between its bottom and the lifting plate 7; when the lifting plate 7 is raised from the positioning groove 3, the bottom of the clamping plate 9 is pulled closer to the lifting plate 7 by each spring 10, so that each clamping plate 9 opens outward, thus facilitating the placement of the housing 17.

[0026] Specifically, a groove 4 is provided on the bottom mold 2, and a lifting plate 12 is fixedly provided at the bottom of the lifting plate 7. The lifting plate 12 is slidably disposed in the groove 4. The lifting plate 12 is fixedly disposed in the middle position of the lifting plate 7. When in use, the lifting plate 12 is lifted upward, thereby driving the lifting plate 7 to rise from the positioning groove 3.

[0027] Specifically, the lifting plate 12 is provided with an inclined groove 13, and a push rod 14 is slidably arranged in the inclined groove 13. The push rod 14 can both slide in the inclined groove 13 and rotate in the inclined groove 13. The inclined groove 13 passes through the lifting plate 12. When it is necessary to move the lifting plate 7 up and down, the lifting plate 12 can be driven to move up and down by moving the push rod 14, thereby driving the lifting plate 7 to move.

[0028] Specifically, two slots 6 are formed in the bottom mold 2, and a connecting plate 15 is slidably arranged in each slot 6. The two ends of the push rod 14 are rotatably connected to the ends of each connecting plate 15. A tie rod 16 is fixedly arranged between the two connecting plates 15. The tie rod 16 is fixedly arranged at the end of the connecting plate 15 away from the push rod 14. The two slots 6 are located on both sides of the lifting plate 12, and the connecting plate 15 abuts against the side wall of the lifting plate 12. Figure 1 and Figure 5 When it is necessary to lift the lifting plate 7, push the tie rod 16 towards the bottom mold 2. The two connecting plates 15 will drive the push rod 14 to move away from the tie rod 16, thereby moving the lifting plate 12 upward through the cooperation of the inclined groove 13. When it is necessary to return the raised lifting plate 7 to the positioning groove 3, pull the tie rod 16 away from the push rod 14. The push rod 14 will drive the lifting plate 12 downward, thereby driving the lifting plate 7 downward.

[0029] Specifically, two sliding rods 11 are fixedly installed at the bottom of the lifting plate 7, and both sliding rods 11 are slidably connected to the bottom mold 2; the stability of the connection between the lifting plate 7 and the bottom mold 2 is increased by the two sliding rods 11 that are slidably connected to the bottom mold 2.

[0030] Specifically, the bottom and sides of the lifting plate 7 are nitrided; the lifting plate 7, the bottom mold 2, and other components are all made of metal. The bottom and sides of the lifting plate 7 that contact the bottom mold 2 are nitrided to enhance the surface hardness, wear resistance, and anti-adhesion properties, thereby preventing high-frequency vibration from causing the lifting plate 7 and the bottom mold 2 to stick together during ultrasonic welding of the upper and lower cover plates.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic thermal welding positioning mechanism for upper and lower cover plates, comprising a mounting plate (1), characterized in that, A bottom mold (2) is fixedly installed on the mounting plate (1), and a positioning groove (3) is provided on the top of the bottom mold (2). The lifting plate (7) is slidably disposed at the bottom of the positioning groove (3). Multiple clamping plates (9) are rotatably disposed on the side wall of the lifting plate (7). Multiple grooves (5) adapted to the clamping plates (9) are opened on the bottom mold (2).

2. The ultrasonic thermal welding positioning mechanism for upper and lower cover plates according to claim 1, characterized in that, Each of the clamping plates (9) is fixedly provided with a spring (10) between its bottom and the lifting plate (7).

3. The ultrasonic thermal welding positioning mechanism for upper and lower cover plates according to claim 1, characterized in that, The bottom mold (2) is provided with a sliding groove (4), and the bottom of the lifting plate (7) is fixedly provided with a lifting plate (12), which is slidably disposed in the sliding groove (4).

4. The ultrasonic thermal welding positioning mechanism for upper and lower cover plates according to claim 3, characterized in that, The lifting plate (12) also has an inclined groove (13), and a top rod (14) is slidably arranged in the inclined groove (13).

5. The ultrasonic thermal welding positioning mechanism for upper and lower cover plates according to claim 4, characterized in that, Two slots (6) are provided in the bottom mold (2), and a connecting plate (15) is slidably arranged in each slot (6). The two ends of the top rod (14) are rotatably connected to the ends of each connecting plate (15) in a one-to-one correspondence. A pull rod (16) is fixedly arranged between the two connecting plates (15).

6. The ultrasonic thermal welding positioning mechanism for upper and lower cover plates according to claim 1, characterized in that, The bottom of the lifting plate (7) is fixedly provided with two sliding rods (11), and both sliding rods (11) are slidably connected to the bottom mold (2).

7. The ultrasonic thermal welding positioning mechanism for upper and lower cover plates according to claim 1, characterized in that, The bottom and sides of the lifting plate (7) are nitrided.

Images