An assembling splicing device for plastic product molding

Abstract

The present invention discloses a splicing device for the molding of assembled plastic products, which relates to the technical field of plastic product molding, and includes an ultrasonic welding assembly, a quick replacement mechanism, an alternating welding mechanism, and a driving mechanism; the ultrasonic welding assembly includes: a welding head, an amplitude modulator, a limiting rod, an extension rod I, a compression spring, a connecting plate, a slider, and an electric cylinder; the upper end of the welding head is slidably installed in the chute under the amplitude modulator, the upper part of the limiting rod is slidably installed in the round hole on the side of the amplitude modulator, the lower end of the limiting rod is stuck in the round hole on the side of the welding head, the extension rod I is fixedly welded on the side of the limiting rod, and a compression spring is installed on the limiting rod. When the present invention is in use, the connection mode between the welding head and the amplitude modulator is a sliding connection, and then limited by the limiting rod, so that the connection between the welding head and the amplitude modulator is stable and will not fall off, thereby reducing the instability of the equipment during use.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic product molding, and particularly relates to a splicing device for assembling plastic product molding. Background Art

[0002] Ultrasonic welding utilizes the ultrasonic vibration frequency to generate heat energy through contact friction, so that two plastic parts are melted at the welding interface and fixed together. Specifically, the ultrasonic generator converts the current of 50 Hz or 60 Hz into high-frequency electrical energy (such as 15, 20, 30 or 40 kHz), and these high-frequency electrical energies are converted into mechanical motions of the same frequency through the transducer; then these mechanical motions are transmitted to the welding head through the amplitude modulator device, and the welding head transmits the vibration energy to the interface of the plastic parts to be welded; in this area, the vibration energy is converted into heat energy by friction to melt the plastic. After the vibration stops, the short-term pressure maintained on the plastic parts solidifies the two plastic parts into one body in a molecular connection manner.

[0003] In the existing ultrasonic welding device, the welding head and the amplitude modulator are connected by threads, and it is very easy for the thread connection to become loose and fall off during vibration. Moreover, when welding different materials, replacing the welding head requires manual operation, which is time-consuming and laborious.

[0004] The present invention is designed for the defects of the existing technology. When in use, the connection mode between the welding head and the amplitude modulator adopts a sliding connection, and then is limited by a limiting rod, so that the connection between the welding head and the amplitude modulator is firm and will not fall off, thereby reducing the instability of the equipment during use; when in use, the present invention can automatically and quickly replace the welding head, and complete the replacement of different welding heads in an extremely short time, so as to splice plastic products of different shapes; when splicing plastic products, the present invention can place plastic products in another mold while the welding head welds the plastic products in one mold. When the plastic products in one mold are welded, it can quickly weld the plastic products placed in the other mold, greatly shortening the ultrasonic welding placement gap, achieving the effect of continuous welding, and greatly improving the welding efficiency. Summary of the Invention

[0005] In view of the above technical problems, the present invention discloses a splicing device for assembling plastic product molding, which can effectively solve the problems in the background art.

[0006] An assembling splicing device for plastic product molding, comprising an ultrasonic welding assembly, a quick replacement mechanism, an alternating welding mechanism, and a driving mechanism; the ultrasonic welding assembly includes: a welding head, an amplitude modulator, a limiting rod, an extension rod I, a compression spring, a connecting plate, a slider, and an electric cylinder; the upper end of the welding head is slidably installed in the chute under the amplitude modulator, the upper part of the limiting rod is slidably installed in the round hole on the side of the amplitude modulator, the lower end of the limiting rod is stuck in the round hole on the side of the welding head, the extension rod I is fixedly welded to the side of the limiting rod, a compression spring is installed on the limiting rod, the upper end of the compression spring contacts the amplitude modulator, and the lower end of the compression spring contacts the limiting rod; the connecting plate is fixedly installed at the upper end of the amplitude modulator, the short rod on the connecting plate is slidably installed in the round hole on the slider, the cylinder body of the electric cylinder is fixedly installed on the slider, and the piston rod of the electric cylinder is fixedly connected to the connecting plate.

[0007] Preferably, the quick replacement mechanism includes: side plates, a support plate, support rods, magnets, a limiting frame, a transmission shaft, a stepping motor I, and a stepping motor II; the side plates are slidably installed on the slide rails of the support plate, the support rods and the magnets are fixedly installed on the side plates, and the magnet is located in the middle of the support rods; the limiting frame is slidably installed in the chute at the upper end of the support plate, a rack is provided on the limiting frame, the rack meshes with the gear on the transmission shaft, the transmission shaft is rotatably installed in the round hole on the upper side of the support plate, the motor shaft of the stepping motor I is fixedly connected to the transmission shaft, and the stepping motor I is fastened to the side of the support plate by bolts; the motor gear of the stepping motor II meshes with the rack provided on the back of the side plate, and the stepping motor II is fastened to the side of the support plate by bolts.

[0008] Preferably, the alternating welding mechanism includes: a base, a bottom plate, a mold, a pick-and-place rod, an extension rod II, a turntable, and a stepping motor IV; the bottom plate is slidably installed on the slide rails on the base, the mold is fixedly installed in the groove on the bottom plate, and the square hole on the side of the mold is slidably connected to the pick-and-place rod; the turntable is rotatably installed on the base, the round rod on the turntable is slidably installed in the chute on the extension rod II, the extension rod II is fixedly welded to the side of the mold, the motor shaft of the stepping motor IV is fixedly connected to the turntable, and the stepping motor IV is fixedly installed on the extension plate under the base; the base is also fixedly connected to the support plate.

[0009] Preferably, the driving mechanism includes: an extension frame, a support frame, a slide rod, a lead screw, and a stepping motor III; one end of the extension frame is fixedly connected to the slide rod, the other end of the extension frame is fixedly welded to the upper end of the support frame, the support frame is fixedly installed on the base, the slide rod is also fixedly connected to the support frame, and the slide rod is slidably connected to the slider; one end of the lead screw is rotatably installed in the round hole on the extension frame, the other end of the lead screw is rotatably installed in the round hole on the support frame, the lead screw is threadedly connected to the slider, and one end of the lead screw is fixedly connected to the motor shaft of the stepping motor III, and the stepping motor III is fixedly installed on the extension plate of the support frame.

[0010] Preferably, there are multiple welding heads, each with a different shape. The welding heads in use are installed on the amplitude modulator, and the spare welding heads are installed on the support rods on the side plate.

[0011] Preferably, the welding head is made of titanium alloy.

[0012] Preferably, one end of the limit frame is provided with an inclined surface, and the lowest point of the inclined surface is lower than the extension rod I.

[0013] Preferably, the mold has various different types of groove shapes, and two of the mold grooves placed in the bottom plate have the same shape.

[0014] The beneficial effects of the present invention compared with the prior art are as follows:

[0015] 1. When the present invention is in use, the connection between the welding head and the amplitude modulator adopts a sliding connection and is limited by a limit rod, so that the connection between the welding head and the amplitude modulator is stable and will not fall off, thereby reducing the instability of the equipment during use.

[0016] 2. When the present invention is in use, it can automatically and quickly replace the welding head, complete the replacement of different welding heads in a very short time, and thus splice plastic products of different shapes.

[0017] 3. When the present invention splices plastic products, it can place plastic products in another mold while the welding head welds the plastic products in one mold. When the welding of the plastic products in one mold is completed, it can quickly weld the plastic products placed in the other mold, greatly shortening the ultrasonic welding placement gap, achieving the effect of continuous welding, and greatly improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an isometric view of the overall structure of the present invention.

[0019] Figure 2 It is a side view of the overall structure of the present invention.

[0020] Figure 3 It is a first perspective view of the ultrasonic welding assembly of the present invention.

[0021] Figure 4 It is a second perspective view of the ultrasonic welding assembly of the present invention.

[0022] Figure 5 It is a first perspective view of the quick replacement mechanism of the present invention.

[0023] Figure 6 It is a second perspective view of the quick replacement mechanism of the present invention.

[0024] Figure 7This is a side view of the quick replacement mechanism of the present invention.

[0025] Figure 8 This is a first perspective view of the alternating welding mechanism of the present invention.

[0026] Figure 9 This is a second perspective view of the alternating welding mechanism of the present invention.

[0027] Reference numerals in the drawings: 1, welding head; 2, amplitude modulator; 3, limiting rod; 4, extension rod I; 5, compression spring; 6, connecting plate; 7, slider; 8, electric cylinder; 9, side plate; 10, support plate; 11, support rod; 12, magnet; 13, limiting frame; 14, transmission shaft; 15, stepper motor I; 16, stepper motor II; 17, extension frame; 18, support frame; 19, sliding rod; 20, lead screw; 21, stepper motor III; 22, base; 23, bottom plate; 24, mold; 25, pick-up and placement rod; 26, extension rod II; 27, turntable; 28, stepper motor IV. Detailed implementation manners

[0028] The technical solutions of the present invention will be further specifically described below through embodiments in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementations disclosed below.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of simplifying the description of the present invention and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, in order to facilitate the description, spatial relative terms can be used in the text, for example, "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature relative to other elements or features as shown in the drawings. The spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used in the text can be interpreted accordingly.

[0030] As shown in the embodiment Figures 1-9 A splicing device for assembling plastic product molding includes an ultrasonic welding assembly, a quick replacement mechanism, an alternating welding mechanism, and a driving mechanism;

[0031] In an alternative embodiment of the embodiment of the present invention, as Figure 3 , Figure 4 shown, the ultrasonic welding assembly includes: a welding head 1, an amplitude modulator 2, a limit rod 3, an extension rod I 4, a compression spring 5, a connecting plate 6, a slider 7, and an electric cylinder 8; the upper end of the welding head 1 is slidably installed in the chute under the amplitude modulator 2, the upper part of the limit rod 3 is slidably installed in the round hole on the side of the amplitude modulator 2, the lower end of the limit rod 3 is stuck in the round hole on the side of the welding head 1, the extension rod I 4 is fixedly welded to the side of the limit rod 3, a compression spring 5 is installed on the limit rod 3, the upper end of the compression spring 5 contacts the amplitude modulator 2, the lower end of the compression spring 5 contacts the limit rod 3, and the compression spring 5 generates an elastic force; the connecting plate 6 is fixedly installed at the upper end of the amplitude modulator 2, the short rod on the connecting plate 6 is slidably installed in the round hole on the slider 7, the cylinder body of the electric cylinder 8 is fixedly installed on the slider 7, and the piston rod of the electric cylinder 8 is fixedly connected to the connecting plate 6.

[0032] In an alternative embodiment of the embodiment of the present invention, as Figure 5 , Figure 6 , Figure 7 shown, the quick replacement mechanism includes: side plates 9, a support plate 10, support rods 11, magnets 12, a limit frame 13, a transmission shaft 14, a stepping motor I 15, and a stepping motor II 16; the side plates 9 are slidably installed on the slide rails of the support plate 10, the support rods 11 and the magnets 12 are fixedly installed on the side plates 9, and the position of the magnets 12 is in the middle of the support rods 11; the limit frame 13 is slidably installed in the chute at the upper end of the support plate 10, a rack is provided on the limit frame 13, the rack meshes with the gear on the transmission shaft 14, the transmission shaft 14 is rotatably installed in the round hole on the upper side of the support plate 10, the motor shaft of the stepping motor I 15 is fixedly connected to the transmission shaft 14, and the stepping motor I 15 is fastened to the side of the support plate 10 by bolts; the motor gear of the stepping motor II 16 meshes with the rack provided on the back of the side plates 9, and the stepping motor II 16 is fastened to the side of the support plate 10 by bolts.

[0033] In an alternative embodiment of the embodiment of the present invention, as Figure 8 , Figure 9As shown in the figure, the alternating welding mechanism includes: a base 22, a bottom plate 23, a mold 24, a pick-up and placement rod 25, an extension rod II 26, a turntable 27, and a stepping motor IV 28; the bottom plate 23 is slidably installed on the slide rail of the base 22, the mold 24 is fixedly installed in the groove of the bottom plate 23, the square hole on the side of the mold 24 is slidably connected to the pick-up and placement rod 25, and the pick-up and placement rod 25 is inserted into the square hole on the side of the mold 24 to facilitate taking out or putting into the mold 24; the turntable 27 is rotatably installed on the base 22, the round rod on the turntable 27 is slidably installed in the chute of the extension rod II 26, the extension rod II 26 is fixedly welded to the side of the mold 24, the motor shaft of the stepping motor IV 28 is fixedly connected to the turntable 27, and the stepping motor IV 28 is fixedly installed on the extension plate under the base 22; the base 22 is also fixedly connected to the support plate 10.

[0034] In an alternative embodiment of the present invention, as Figure 5 , Figure 6 shown, the driving mechanism includes: an extension frame 17, a support frame 18, a slide rod 19, a lead screw 20, and a stepping motor III 21; one end of the extension frame 17 is fixedly connected to the slide rod 19, the other end of the extension frame 17 is fixedly welded to the upper end of the support frame 18, the support frame 18 is fixedly installed on the base 22, the slide rod 19 is also fixedly connected to the support frame 18, and the slide rod 19 is slidably connected to the slider 7; one end of the lead screw 20 is rotatably installed in the round hole of the extension frame 17, the other end of the lead screw 20 is rotatably installed in the round hole of the support frame 18, the lead screw 20 is threadedly connected to the slider 7, and one end of the lead screw 20 is fixedly connected to the motor shaft of the stepping motor III 21, and the stepping motor III 21 is fixedly installed on the extension plate of the support frame 18.

[0035] In an alternative embodiment of the present invention, as Figure 1 , Figure 2 shown, there are multiple welding heads 1, each with a different shape. The welding head 1 in use is installed on the amplitude modulator 2, and the spare welding head 1 is installed on the support rod 11 on the side plate 9. Different shapes are used for welding different plastic products.

[0036] In an alternative embodiment of the present invention, as Figure 3 shown, the welding head 1 is made of titanium alloy material. Titanium alloy has excellent acoustic performance, high hardness, high toughness, good thermal conductivity, and wear resistance; its fatigue strength is relatively high.

[0037] In an alternative embodiment of the present invention, as Figure 5 shown, one end of the limit frame 13 is provided with an inclined surface, and the lowest part of the inclined surface is lower than the extension rod I 4.

[0038] In an alternative embodiment of the present invention, as Figure 8As shown, the mold 24 has various different types of groove shapes, and two of the grooves of the mold 24 placed in the bottom plate 23 have the same shape.

[0039] Working principle: When the present invention is in use, first, the plastic products to be spliced are prepared. Subsequently, two molds 24 of corresponding shapes are installed on the pick-up and placement rod 25. Hold the pick-up and placement rod 25 and place the mold 24 into the corresponding groove on the bottom plate 23. Then, select and replace the welding head 1 of the corresponding shape. The stepping motor III 21 is started to drive the lead screw 20 to rotate, thereby driving the slider 7 to slide on the slide rod 19. The slider 7 slides towards the direction of the limit frame 13. During the sliding process, the extension rod I 4 will contact the inclined surface on the limit frame 13, thereby squeezing the extension rod I 4 to move upward, which drives the limit rod 3 to slide upward, so that the lower end of the limit rod 3 disengages from the welding head 1. Continuing to move, the support rod 11 will insert into the round hole on the welding head 1, so that the welding head 1 is slidably installed on the support rod 11. And when the welding head 1 approaches the magnet 12, it will be tightly attracted by the magnet 12 to complete the fixation. Subsequently, the slider 7 resets and moves back. When moving, since the welding head 1 is attracted by the magnet 12 and the limit rod 3 does not block the welding head 1, the welding head 1 will be left on the support rod 11. After the welding head 1 is separated from the amplitude modulator 2, the stepping motor II 16 is started to drive the side plate 9 to slide on the support plate 10, so that the spare welding head 1 on the side plate 9 moves to the position of the just-replaced welding head 1. Subsequently, the slider 7 moves towards the limit frame 13 again. When the extension rod I 4 contacts the limit frame 13, it is squeezed and lifted again. Continuing to move, the sliding groove on the amplitude modulator 2 is slidably connected to the spare welding head 1. Then, the stepping motor I 15 is started to drive the transmission shaft 14 to rotate, thereby driving the limit frame 13 to move backward. After moving a certain distance, the inclined surface on the limit frame 13 disengages from the extension rod I 4. The limit rod 3 moves downward under the action of the compression spring 5, so that the lower end of the limit rod 3 inserts into the round hole on the spare welding head 1, thereby fixing the welding head 1 to the amplitude modulator 2. Subsequently, the slider 7 resets again. Since the limit rod 3 fixes the welding head 1, when the slider 7 resets, the welding head 1 can be disengaged from the attraction of the magnet 12, so that the spare welding head 1 moves to the working area;

[0040] Subsequently, the plastic product is placed in the mold 24. The electric cylinder 8 is started to drive the connecting plate 6 to move downward, thereby driving the welding head 1 to press the plastic product on the mold 24 and welding the plastic product through the ultrasonic vibration of the welding head 1. Then, the welding head 1 is lifted. The stepping motor IV 28 is started to drive the turntable 27 to rotate 180 degrees. The round bar on the turntable 27 drives the extension rod II 26 to move in the other direction, so that the welding head 1 is aligned with the plastic product on another mold 24, and the plastic product is welded again. While welding, the welded plastic product in the other mold 24 is taken out and a new unwelded plastic product is put in. Welding is carried out in this way repeatedly, greatly saving the material change interval time during welding and achieving the effect of continuous welding.

[0041] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled plastic product molding splicing device, characterized in that: The invention comprises an ultrasonic welding assembly, a quick-change mechanism, an alternating welding mechanism, and a driving mechanism; the ultrasonic welding assembly comprises: a welding head (1), an amplitude modulator (2), a limiting rod (3), an extension rod I (4), a compression spring (5), a connecting plate (6), a slider (7), and an electric cylinder (8); the upper end of the welding head (1) is slidably mounted in a slide groove below the amplitude modulator (2), the upper part of the limiting rod (3) is slidably mounted in a circular hole on the side of the amplitude modulator (2), and the lower end of the limiting rod (3) is clamped in the circular hole on the side of the welding head (1). The extension rod I (4) is fixedly welded to the side of the limit rod (3) in the hole, the limit rod (3) is provided with a compression spring (5), the upper end of the compression spring (5) contacts the amplitude modulator (2), and the lower end of the compression spring (5) contacts the limit rod (3); the connecting plate (6) is fixedly mounted on the upper end of the amplitude modulator (2), the short rod on the connecting plate (6) is slidably mounted in the circular hole on the slide block (7), the cylinder body of the electric cylinder (8) is fixedly mounted on the slide block (7), and the piston rod of the electric cylinder (8) is fixedly connected to the connecting plate (6); The quick-change mechanism comprises: a side plate (9), a support plate (10), a support rod (11), a magnet (12), a stop frame (13), a transmission shaft (14), a stepper motor I (15), and a stepper motor II (16); the side plate (9) is slidably mounted on a slide rail of the support plate (10); the support rod (11) and the magnet (12) are fixedly mounted on the side plate (9); the magnet (12) is located in the middle of the support rod (11); the stop frame (13) is slidably mounted in a slide groove at the upper end of the support plate (10); a rack is provided on the stop frame (13); the rack is meshed with a gear on the transmission shaft (14); the transmission shaft (14) is rotatably mounted in a circular hole on the upper side of the support plate (10); the motor shaft of the stepper motor I (15) is fixedly connected to the transmission shaft (14); the stepper motor I (15) is fastened to the support plate (10) by bolts. The motor gear of the stepper motor II (16) is meshed with the rack provided on the back of the side plate (9), and the stepper motor II (16) is fastened to the side of the support plate (10) by bolts; The alternating welding mechanism comprises: a base (22), a bottom plate (23), a mold (24), a pick-up and placement rod (25), an extension rod II (26), a turntable (27), and a stepper motor IV (28); the bottom plate (23) is slidably mounted on a slide rail on the base (22); the mold (24) is fixedly mounted in a groove on the bottom plate (23); a square hole on the side of the mold (24) is slidably connected to the pick-up and placement rod (25); the turntable (27) is rotatably mounted on the base (22); a round bar on the turntable (27) is slidably mounted in a slide groove on the extension rod II (26); the extension rod II (26) is fixedly welded to the side of the mold (24); a motor shaft of the stepper motor IV (28) is fixedly connected to the turntable (27); and the stepper motor IV (28) is fixedly mounted on the extension plate below the base (22); the base (22) is also fixedly connected to the support plate (10); The driving mechanism comprises: an extension frame (17), a support frame (18), a slide rod (19), a screw rod (20), and a stepping motor III (21); one end of the extension frame (17) is fixedly connected to the slide rod (19), the other end of the extension frame (17) is fixedly welded to the upper end of the support frame (18), the support frame (18) is fixedly mounted on the base (22), the slide rod (19) is also fixedly connected to the support frame (18), and the slide rod (19) is slidably connected to the slider (7); one end of the screw rod (20) is rotatably mounted in a circular hole on the extension frame (17), the other end of the screw rod (20) is rotatably mounted in a circular hole on the support frame (18), the screw rod (20) is threadedly connected to the slider (7), and one end of the screw rod (20) is fixedly connected to the motor shaft of the stepping motor III (21), and the stepping motor III (21) is fixedly mounted on the extension plate of the support frame (18).

2. The assembled plastic product molding splicing device according to claim 1, characterized in that: The welding heads (1) are provided in plurality, each having a different shape. The welding heads (1) in use are mounted on the amplitude modulator (2), and the welding heads (1) in standby are mounted on the support rod (11) on the side plate (9).

3. The assembled plastic product molding splicing device according to claim 1, characterized in that: The welding head (1) is made of titanium alloy.

4. The assembled plastic product molding splicing device according to claim 1, characterized in that: One end of the limiting frame (13) is provided with an inclined surface, and the lowermost side of the inclined surface is lower than the extension rod I (4).

5. The assembled plastic product molding splicing device according to claim 1, characterized in that: The mold (24) has a plurality of different types of groove shapes, wherein the groove shapes of the two molds (24) placed in the bottom plate (23) are the same.

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