A single station hot plate welder

Abstract

This utility model discloses a single-station hot plate welding machine, belonging to the field of hot plate welding technology. The hot plate welding machine includes a cabinet, an upper mounting part, a lower mounting part, and a heating component. The movement of the upper and lower mounting parts is driven by first lead screws driven by first servo motors on both sides. The synchronous control of the dual motors can achieve precise synchronization of movement in opposite directions, and the lead screw drive can provide continuous and stable mold closing pressure. Compared with the traditional slide bar drive, it avoids welding gaps caused by pressure fluctuations, ensures tight contact of the workpiece welding surface, and improves welding strength and consistency. The linear slide rail with built-in ball bearings, cage, and return channel is used in conjunction with the sliding block to replace the sliding friction of the traditional slide bar. The low friction coefficient of rolling friction can significantly reduce the wear of the slide rail and the slider, avoiding the problem of precision decay caused by the thinning of the slide bar and the enlargement of the sliding hole. At the same time, the multi-directional contact design of the slide rail can limit the movement of the upper and lower mounting parts, ensuring accurate workpiece alignment during mold closing.

Description

Technical Field

[0001] This utility model belongs to the field of hot plate welding technology, specifically, it relates to a single-station hot plate welding machine. Background Technology

[0002] Hot plate welding machines are a type of equipment used for welding plastic products. Their working principle is that the upper and lower positioning molds respectively position and clamp the plastic parts, so that the hot mold is in place. The movement of the two positioning molds brings the plastic parts into contact with the hot mold. The hot mold heats up and melts the welding surfaces that need to be welded. After a suitable time, the two positioning molds return to their original positions. After the hot mold returns to its original position, the two positioning molds immediately close to press and solidify the welded parts of the two plastic parts, thereby achieving the purpose of welding plastic products.

[0003] Chinese utility model patent CN221584556U discloses a double lead screw servo hot plate welding machine. The upper mold, lower mold, and hot mold are fixed to the upper template and the lower template to the hot template, respectively. The output end of the servo motor drives the two sets of lead screws to rotate through two sets of synchronous belts. The two sets of lead screws provide a pushing force to the lower template by engaging with the lower template. The lower template drives the lower mold to move vertically along the slide bar. Similarly, the two sets of lead screws are driven to rotate through the second servo motor, thereby fixing the upper template to the upper mold.

[0004] Although the hot plate welding machine achieves smoother bonding of the upper and lower templates and the hot plate using a twin-screw mechanism, the transmission structure that uses a sliding rod to move the upper and lower templates up and down presents two major problems in actual operation, significantly impacting the equipment's operating efficiency and precision stability:

[0005] On the one hand, in order to reduce the frictional resistance between the sliding rod and the upper and lower templates, lubricating oil needs to be applied to the sliding contact surface to ensure smooth operation. However, during the relative sliding process of the sliding rod and the template, excess lubricating oil is prone to dripping and accumulating. This not only forms oil residue on the surface of the lower template, but also penetrates into other areas of the equipment body, forming oil stains that are difficult to clean thoroughly. Such oil stains not only affect the cleanliness of the equipment's appearance, but long-term accumulation may also attract dust and impurities, thereby contaminating the mold or product and increasing the workload and cleaning difficulty of daily maintenance.

[0006] On the other hand, due to the inherent limitations of the sliding friction between the slide rod and the template sliding hole, the friction force generated during their relative movement is relatively large. Under long-term high-frequency friction, the surface of the slide rod will experience continuous wear, causing its diameter to gradually decrease. At the same time, the sliding hole on the template will also experience wear due to wear, resulting in an enlarged hole diameter. This will directly lead to an increase in the fit clearance between the slide rod and the sliding hole, causing a significant decrease in the movement accuracy of the template. When the equipment performs the upper and lower template closing operation, the accuracy deviation will directly manifest as inaccurate mold alignment, which will not only affect the product molding quality, but may also cause mold collision damage in severe cases, shortening the service life of the equipment and the mold. Utility Model Content

[0007] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0008] To address the problems mentioned in the background section, the present invention adopts the following technical solution.

[0009] A single-station hot plate welding machine includes a cabinet. Inside the cabinet are an upper mounting section and a lower mounting section that are vertically opposite each other and can be raised and lowered. Inside the cabinet is a horizontally movable heating component. Inside the cabinet is a first mounting bracket. The upper and lower mounting sections are located at the top and bottom of the inner side of the first mounting bracket. The inner walls on both sides of the first mounting bracket are provided with horizontally opposite linear slide rails. The opposite corners of the upper and lower mounting sections move along the same linear slide rails. A workpiece is mounted on the opposite surfaces of the upper and lower mounting sections. The heating component moves horizontally between the upper and lower mounting sections. When the upper and lower mounting sections move towards each other, the workpiece contacts the heating component. After heating is completed, the heating component resets, and the upper and lower mounting sections come into contact with each other.

[0010] Preferably, the outer walls of the upper mounting part and the lower mounting part are provided with sliding blocks that are slidably connected to the adjacent linear slide rail, and the upper mounting part and the lower mounting part slide on the outer wall of the linear slide rail through the sliding blocks.

[0011] Preferably, the top and bottom inner sides of the cabinet are provided with second mounting brackets, the two sides of the second mounting brackets are provided with drive components, and the inside of the two sides of the second mounting brackets is provided with third mounting brackets. The upper third mounting bracket is detachably connected to the upper mounting part, and the lower third mounting bracket is detachably connected to the lower mounting part. The drive components drive the two sides of the second mounting brackets to move.

[0012] Preferably, the cabinet is provided with a fourth mounting bracket, and the fourth mounting bracket is provided with a lateral moving component, which drives the heating component to move along the length of the fourth mounting bracket.

[0013] Preferably, the drive assembly includes a first servo motor and a first lead screw. The first servo motor is mounted on a second mounting bracket. The first lead screw is detachably connected to the rotating end of the first servo motor. The first lead screw is threadedly connected to a third mounting bracket. The rotation of the first servo motor drives the first lead screw to rotate, thereby moving the third mounting bracket.

[0014] Preferably, the lateral movement component includes a second servo motor, a sliding plate, a sliding rod, and a second lead screw. The upper end of the fourth mounting bracket has two opposing support frames on either side. The second lead screw is positioned between two opposing support frames on one side, and the sliding rod is positioned between two opposing support frames on the other side. The sliding plate is positioned on both sides of the heating component; one sliding plate is threadedly connected to the second lead screw, and the other sliding plate is positioned on both sides of the heating component. One sliding plate is slidably connected to the sliding rod. The second servo motor is positioned at one end of the fourth mounting bracket, and its rotating end is detachably connected to one end of the second lead screw. The rotation of the second servo motor drives the second lead screw to rotate, causing the heating component to move laterally along the outer walls of the second lead screw and the sliding rod in conjunction with the two side support frames.

[0015] Preferably, the fourth mounting bracket is provided with a notch at the mold closing position of the upper mounting part and the lower mounting part.

[0016] Preferably, the upper mounting part includes an upper mold and an adsorption component installed in the upper mold, and the lower mounting part includes a lower mold and an adsorption component installed in the lower mold.

[0017] Preferably, the heating assembly includes a movable platform and heating plates mounted on the upper and lower sides of the movable platform.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The movement of the upper and lower mounting parts is driven by the first lead screws driven by the first servo motors on both sides. The dual-motor synchronous control can achieve precise synchronization of movement in opposite directions, and the lead screw drive can provide continuous and stable mold closing pressure. Compared with traditional slide bar drive, it avoids welding gaps caused by pressure fluctuations, ensures tight contact of the workpiece welding surface, and improves welding strength and consistency. The linear slide rail with built-in ball bearings, cage and return channel is used in conjunction with the sliding block to replace the sliding friction of the traditional slide bar. The low friction coefficient of rolling friction can significantly reduce the wear of the slide rail and slider, and avoid the problem of accuracy reduction caused by the thinning of the slide bar and the enlargement of the sliding hole. At the same time, the multi-directional contact design of the slide rail can limit the movement of the upper and lower mounting parts, ensure accurate workpiece alignment during mold closing, reduce mold closing deviation from the source, improve welding accuracy, and prevent mold damage due to misalignment and collision, thus extending the mold service life.

[0020] 2. Both the upper and lower mounting sections have built-in adsorption components, supporting two fixing methods: vacuum adsorption or cylinder clamping. The fixing scheme can be flexibly selected for different materials to prevent the workpiece from shifting during heating and mold closing, ensuring that the welding surface is always accurately aligned and further improving welding consistency. At the same time, the adsorption components are integrated into the mold, eliminating the need for additional external clamps, simplifying the workpiece clamping process and improving operating efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a single-station hot plate welding machine according to the present invention;

[0022] Figure 2 This is a front view structural diagram of the hot plate welding machine of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the hot plate welding machine of this utility model;

[0024] Figure 4 In this utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the internal structure of the hot plate welding machine of this utility model;

[0026] Figure 6 In this utility model Figure 5 Enlarged structural diagram at point B.

[0027] The correspondence between the labels and component names in the attached figures is as follows:

[0028] 100. Lower mounting box; 101. Control box; 102. Rotating door panel; 103. Adjustable support feet; 104. Upper mounting box; 105. Middle partition;

[0029] 200. Upper mounting part; 201. Lower mounting part; 202. First mounting bracket; 203. Linear slide rail; 204. Second mounting bracket; 205. Third mounting bracket; 206. First lead screw; 207. First servo motor; 208. Sliding block;

[0030] 300. Heating component; 301. Fourth mounting bracket; 302. Sliding plate; 303. Second servo motor; 304. Second lead screw; 305. Support frame. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0034] like Figure 1-2 The diagram shown is a schematic representation of a preferred embodiment of the present invention: a single-station hot plate welding machine. This embodiment includes a lower mounting box 100 and an upper mounting box 104. Multiple adjustable support feet 103 are detachably connected to the bottom of the upper mounting box 104. A rotating door panel 102 is provided between the lower mounting box 100 and the upper mounting box 104. A middle partition 105 is detachably connected between the lower mounting box 100 and the upper mounting box 104. The lower mounting box 100, the upper mounting box 104, and the middle partition 105 are combined to form a cabinet. A control box 101 is detachably connected to one side of the cabinet. An upper mounting part 200 is provided on the top inner side of the upper mounting box 104. A lower mounting part 201 is provided at the upper end of the middle partition 105. A heating assembly 300 is provided between the upper mounting box 104 and the middle partition 105. The internal components of the cabinet are... Equipped with a lateral movement component, the heating component 300 is moved laterally. Drive components are installed on the upper and lower sides inside the cabinet, driving the upper mounting portion 200 and the lower mounting portion 201 to move simultaneously towards or in opposite directions. In this embodiment, the two workpieces to be welded are fixed to the opposite surfaces of the upper mounting portion 200 and the lower mounting portion 201, respectively. The heating component 300 is moved laterally between the upper mounting portion 200 and the lower mounting portion 201. Subsequently, the upper mounting portion 200 and the lower mounting portion 201 are moved towards each other, causing the welding surfaces of the workpieces to adhere to the heating component 300. After being heated by the heating component 300, the upper mounting portion 200 and the lower mounting portion 201 move in opposite directions a certain distance. After the heating component 300 resets, the upper mounting portion 200 and the lower mounting portion 201 adhere, causing the workpieces on both sides to adhere and apply a certain pressure, thereby completing the welding between the two workpieces.

[0035] It is worth noting that the upper mounting part 200 includes an upper mold and an adsorption component installed in the upper mold, and the lower mounting part 201 includes a lower mold and an adsorption component installed in the lower mold. The adsorption component can be vacuum adsorption or cylinder clamping.

[0036] It is also worth noting that the heating assembly 300 includes a movable platform and heating plates installed on the upper and lower sides of the movable platform.

[0037] During the lateral movement of the heating component 300, such as Figure 3 as well as Figure 4As shown, the following implementation method can be adopted: a fourth mounting bracket 301 is detachably connected to the upper end of the intermediate partition 105. Support frames 305 are provided on both sides of the upper end of the fourth mounting bracket 301, facing each other. A second lead screw 304 is rotatably connected between the two opposing support frames 305 on one side, and a sliding rod is detachably connected between the two opposing support frames 305 on the other side. The heating assembly 300 is located above the fourth mounting bracket 301 and has sliding plates 302 detachably connected to both sides. One sliding plate 302 is threadedly connected to the second lead screw 304, and the other sliding plate 302 is slidably connected to the outer wall of the sliding rod. A second servo motor 303 is detachably connected to one end of the fourth mounting bracket 301. The rotation of the second servo motor 303... One end of the upper mounting part 301 is detachably connected to one end of the second lead screw 304. The fourth mounting bracket 301 is provided with a notch at the mold closing position of the upper mounting part 200 and the lower mounting part 201. In this embodiment, the second lead screw 304 is driven to rotate by the rotation of the second servo motor 303, so that the heating component 300 can move laterally at the upper end of the fourth mounting bracket 301 in conjunction with the two side support brackets 305. This allows the heating component 300 to be located between the upper mounting part 200 and the lower mounting part 201. The sliding plate 302 is detachably connected to the heating component 300, so that the connection position between the sliding plate 302 and the heating component 300 can be changed according to actual usage requirements. The upper mounting part 200 and the lower mounting part 201 are molded at the position of the notch.

[0038] It is worth noting that the aforementioned second servo motor 303, second lead screw 304, and sliding rod are the lateral movement components that drive the heating component 300 to move in this embodiment.

[0039] During the mold closing process of the upper mounting part 200 and the lower mounting part 201, such as Figure 3 , Figure 5 as well as Figure 6As shown, the following implementation method can be adopted: a first mounting bracket 202 is detachably connected to one side of the upper end of the intermediate partition 105; an upper mounting part 200 is located at the top inner side of the first mounting bracket 202; a lower mounting part 201 is located at the bottom inner side of the first mounting bracket 202; opposing linear slide rails 203 are provided on the opposite sides of the vertical sides of the first mounting bracket 202; and opposing sliding blocks 208 are detachably connected to the outer walls of the upper mounting part 200 and the lower mounting part 201. The slide rail 203 is slidably connected, and the linear slide rail 203 is provided with balls and ball rolling grooves. The sliding block 208 also has built-in balls, a retainer, and a return channel. The upper end of the first mounting bracket 202 and the bottom of the middle partition 105 are detachably connected to the second mounting bracket 204. The second mounting brackets 204 on both sides are provided with third mounting brackets 205. The upper third mounting bracket 205 passes through the top of the second mounting bracket 204, and the lower third mounting bracket 205 passes through the middle partition 105. The opposite sides of the two second mounting brackets 204 are detachably connected to a first servo motor 207. The rotating end of the first servo motor 207 is detachably connected to a first lead screw 206. The first lead screw 206 passes through the second mounting bracket 204 and the third mounting bracket 205 and is threadedly connected to the third mounting bracket 205. In this embodiment, the rotation of the two first servo motors 207 drives the rotation of the two first lead screws 206, thereby enabling the two third mounting brackets 205 to move simultaneously towards or away from each other. During the movement, the third mounting brackets 205 enable the upper mounting part 200 and the third mounting bracket 205 to be balanced by force. Furthermore, by directly driving the first lead screw 206 through the first servo motor 207, continuous and stable pressure can be provided when the upper mounting part 200 and the lower mounting part 201 are closed. Through the ball bearings built into the sliding block 208 and the linear slide rail 203, friction can be reduced during the sliding process, avoiding inaccurate closing of the upper mounting part 200 and the lower mounting part 201 and collisions between the molds.

[0040] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A single-station hot plate welding machine, comprising a cabinet, wherein the cabinet is provided with an upper mounting part (200) and a lower mounting part (201) that are vertically adjustable and opposite to each other, and the cabinet is provided with a heating component (300) that is horizontally movable, characterized in that, The cabinet is equipped with a first mounting bracket (202). The upper mounting part (200) and the lower mounting part (201) are located at the top and bottom of the inner side of the first mounting bracket (202). The inner walls on both sides of the first mounting bracket (202) are equipped with left and right opposite linear slide rails (203). The opposite corners of the upper mounting part (200) and the lower mounting part (201) move along the same linear slide rail (203). The workpiece is installed on the opposite side of the upper mounting part (200) and the lower mounting part (201). The heating component (300) moves laterally between the upper mounting part (200) and the lower mounting part (201). When the upper mounting part (200) and the lower mounting part (201) move towards each other, the workpiece contacts the heating component (300). After heating is completed, the heating component (300) is reset, and the upper mounting part (200) and the lower mounting part (201) fit together.

2. The single-station hot plate welding machine according to claim 1, characterized in that, The upper mounting part (200) and the lower mounting part (201) are provided with sliding blocks (208) that are slidably connected to the adjacent linear slide rail (203) on their outer walls. The upper mounting part (200) and the lower mounting part (201) slide on the outer wall of the linear slide rail (203) through the sliding blocks (208).

3. The single-station hot plate welding machine according to claim 2, characterized in that, The top and bottom inner side of the cabinet are provided with second mounting brackets (204), and drive components are provided on the second mounting brackets (204) on both sides. The interior of the second mounting brackets (204) on both sides is provided with third mounting brackets (205). The upper third mounting bracket (205) is detachably connected to the upper mounting part (200), and the lower third mounting bracket (205) is detachably connected to the lower mounting part (201). The drive components drive the second mounting brackets (204) on both sides to move.

4. The single-station hot plate welding machine according to claim 1, characterized in that, The cabinet is equipped with a fourth mounting bracket (301), and a lateral moving component is provided on the fourth mounting bracket (301). The lateral moving component drives the heating component (300) to move along the length of the fourth mounting bracket (301).

5. The single-station hot plate welding machine according to claim 3, characterized in that, The drive assembly includes a first servo motor (207) and a first lead screw (206). The first servo motor (207) is mounted on a second mounting bracket (204). The first lead screw (206) is detachably connected to the rotating end of the first servo motor (207). The first lead screw (206) is threadedly connected to a third mounting bracket (205). The rotation of the first servo motor (207) drives the first lead screw (206) to rotate, thereby moving the third mounting bracket (205).

6. The single-station hot plate welding machine according to claim 4, characterized in that, The lateral movement assembly includes a second servo motor (303), a sliding plate (302), a sliding rod, and a second lead screw (304). The upper ends of the fourth mounting bracket (301) are each provided with opposing support frames (305). The second lead screw (304) is positioned between two opposing support frames (305) on one side, and the sliding rod is positioned between two opposing support frames (305) on the other side. The sliding plate (302) is positioned on both sides of the heating assembly (300), with one sliding plate (302) and the second lead screw (304) being positioned between the second and third servo motors. The two lead screws (304) are threaded together, and the sliding plate (302) on the other side is slidably connected to the sliding rod. The second servo motor (303) is set at one end of the fourth mounting bracket (301). The rotating end of the second servo motor (303) is detachably connected to one end of the second lead screw (304). The rotation of the second servo motor (303) drives the second lead screw (304) to rotate, so that the heating component (300) and the two side support frames (305) move laterally on the outer wall of the second lead screw (304) and the sliding rod.

7. The single-station hot plate welding machine according to claim 4, characterized in that, The fourth mounting bracket (301) is provided with a notch at the mold closing position of the upper mounting part (200) and the lower mounting part (201).

8. The single-station hot plate welding machine according to claim 1, characterized in that, The upper mounting part (200) includes an upper mold and an adsorption assembly installed in the upper mold, and the lower mounting part (201) includes a lower mold and an adsorption assembly installed in the lower mold.

9. The single-station hot plate welding machine according to claim 1, characterized in that, The heating assembly (300) includes a movable stage and heating plates mounted on the upper and lower sides of the movable stage.

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