Positioning structure for tray production welding

Abstract

This utility model relates to the field of mechanical technology, specifically to a positioning structure for welding in pallet production. It includes a chassis, conveyor platforms respectively located on both sides of the chassis, a mounting plate adapted to be installed on the top of the conveyor platforms, a welding chamber located inside the chassis, and a drive component adapted to be installed on the top of the chassis and used in conjunction with the welding chamber; a limiting mechanism including a fixing component for fixing the base plate and side plates above the mounting plate by the gravity of the base plate and side plates. By setting up the limiting mechanism, this utility model not only enables the pressure block to be driven tightly against the base plate by the gravity of the base plate and side plates, preventing the side plates from shifting or falling off due to vibration during conveying, but also automatically controls the rotation of the paddle rod to generate airflow during the disassembly process after welding the base plate and side plates, blowing away smoke particles and other impurities from the surface of the base plate and side plates. This achieves the effect of improving welding accuracy, reducing welding defect rate, and saving the time and cost required for independent product cleaning.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a positioning structure for welding in pallet production. Background Technology

[0002] Plastic pallet welding machines can weld plastic sheets and profiles, such as base plates, side plates, and support structures, into complete pallet frames through heating and pressurization, ensuring the connection strength between components and meeting the requirements for bearing heavy loads.

[0003] In the prior art, the plastic pallet welding machine with patent publication number CN221775296U has an upper worktable equipped with multiple third clamps capable of holding third pallet plastic parts; a third drive device that drives the upper worktable to move up and down; a first lower worktable fixed with multiple first clamps capable of holding first pallet plastic parts; and a first drive device that drives the first lower worktable to move below the upper worktable. This device is assembled by welding and can select different plastic parts according to different needs, allowing for flexible combinations to obtain products with different requirements. The processing of plastic parts significantly reduces the overall volume of the plastic pallet, and the processing equipment can also be reduced in size, lowering the unit cost.

[0004] When the first drive device of the device moves the first lower worktable to below the upper worktable, the lack of a fixing mechanism for the pallet may cause the pallet to shift, shake, or even fall off due to vibration during the movement. This may result in a positional shift, making it difficult for the plastic parts on the pallet to be accurately aligned with the third clamp on the upper worktable. This affects the welding accuracy and quality, increases the defect rate, and after the pallet is removed after welding, impurities such as smoke particles generated during the welding process remain on the pallet surface. If these impurities are not cleaned in time, they may not only contaminate the goods during the use of the pallet, but may also scratch the pallet surface during transportation, affecting product quality. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a positioning structure for welding in pallet production, which can effectively solve the problems of lack of pallet fixing mechanism in the existing technology, which may cause pallet displacement due to vibration during movement, and the residue of impurities such as smoke particles generated during welding on the pallet surface.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a positioning structure for welding in pallet production, including a plastic pallet welding machine, comprising a machine housing, conveyor tables respectively disposed on both sides of the machine housing, an mounting plate adapted to be installed on the top of the conveyor tables, a welding chamber disposed in the inner cavity of the machine housing, and a drive component adapted to be installed on the top of the machine housing and used in conjunction with the welding chamber.

[0008] The limiting mechanism includes a fixing component for fixing the base plate and side plate above the mounting plate by gravity, a clutch component for transmitting rotational power of the fixing component only during disassembly after the base plate and side plate are welded, and a dust removal component that can blow away welding impurities from the surfaces of the base plate and side plate by the rotational power of the clutch component.

[0009] The fixing component is located on the outside of the mounting plate, the clutch component is located on the outer surface of the fixing component, and the dust removal component is located on the outside of the mounting plate;

[0010] The fixing assembly includes a concave plate located directly above the mounting plate, a spiral post fixedly connected to the bottom of the concave plate, an inner spiral sleeve threadedly connected to the outer surface of the spiral post, and swing rods fixedly connected to the two sides of the inner spiral sleeve respectively.

[0011] Furthermore, the fixing assembly also includes a hinge rod hinged to the outer end face of the swing arm, a slide plate hinged to the other end of the hinge rod, a pressure block fixedly connected to the top of the slide plate, and springs and guide rods respectively fixedly installed on the bottom of both sides of the concave plate.

[0012] Furthermore, a rotating bearing sleeve is installed at the connection between the inner spiral sleeve and the mounting plate, the sliding plate is slidably connected to the bottom of the mounting plate, the outer surface of the pressure block is in sliding contact with the inner surface of the mounting plate, the spring abuts against the mounting plate, and the outer surface of the guide rod is in sliding contact with the inner surface of the mounting plate.

[0013] When the concave plate moves downward under the gravity of the bottom plate and the side plate, it can drive the inner spiral sleeve to rotate through the spiral column, and then the inner spiral sleeve drives the swing rod to rotate synchronously.

[0014] Furthermore, the clutch assembly includes a turntable fixedly sleeved on the outer surface of the inner spiral sleeve, a groove formed on the inner surface of the turntable, a rotating column fixedly connected to the inner wall of the groove, a pawl rotatably sleeved on the outer surface of the rotating column, an inner ratchet sleeved on the outer side of the turntable and used in conjunction with the pawl, and a spring plate fixedly installed on the inner surface of the turntable and used in conjunction with the pawl.

[0015] Furthermore, the inner ratchet is mounted on the bottom of the mounting plate via a bearing seat, and the spring and pawl abut against each other.

[0016] Furthermore, the dust removal assembly includes a large gear fixedly sleeved on the outer surface of the inner ratchet, a small gear meshing on the outer surface of the large gear, a first belt reel fixedly connected to the outer end face of the groove, a timing belt sleeved on the outer surface of the first belt reel, and a second belt reel sleeved on the inner surface of the other end of the timing belt.

[0017] Furthermore, the dust removal assembly also includes a transmission column fixedly connected to the inner surface of the second belt disc, a first bevel gear fixedly sleeved on the through end of the transmission column, a second bevel gear meshing with the outer surface of the first bevel gear, and a blade rod fixedly connected to the inner surface of the second bevel gear for blowing away welding impurities.

[0018] Furthermore, the first pulley is fixedly mounted to the bottom of the mounting plate by a bearing, and a rotating bearing sleeve is installed at the connection between the second bevel gear and the mounting plate.

[0019] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0020] This utility model, by setting a limiting mechanism, can not only drive the pressure block to stick tightly to the bottom plate by the gravity of the bottom plate and the side plate, thus preventing the side plate from shifting or falling off due to vibration during the conveying process, but also automatically control the rotation of the paddle rod to generate airflow during the disassembly process after the bottom plate and side plate are welded, so as to blow away impurities such as smoke particles on the surface of the bottom plate and side plate. This achieves the effect of improving welding accuracy, reducing welding defect rate, and saving the time cost required for independent product cleaning. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0024] Figure 3 This is a schematic diagram of the structure of the bottom plate and side plate of this utility model located above the limiting mechanism;

[0025] Figure 4 This is a schematic diagram of the overall structure of the limiting mechanism in this utility model;

[0026] Figure 5 This utility model Figure 4 Enlarged structural diagram of section B in the middle;

[0027] Figure 6 This is a structural schematic diagram of the limiting mechanism in this utility model from another perspective;

[0028] Figure 7 This utility model Figure 6 A magnified view of the structure at point C in the middle;

[0029] Figure 8 This utility model Figure 6 A magnified schematic diagram of the local structure at point D;

[0030] Figure 9 This is a schematic diagram of the internal structure of the turntable in this utility model;

[0031] Figure 10 This is a schematic diagram of the overall structure of the inner ratchet in this utility model.

[0032] The labels in the diagram represent: 100, Plastic pallet welding machine; 110, Chassis; 120, Conveyor table; 130, Mounting plate; 140, Welding chamber; 150, Drive component; 200, Limiting mechanism; 210, Fixing component; 211, Concave plate; 212, Spiral column; 213, Inner spiral sleeve; 214, Swing rod; 215, Hinge rod; 216, Slide plate; 217, Pressure block; 218, Spring; 219, Guide rod. 220. Clutch assembly; 221. Turntable; 222. Groove; 213. Rotary column; 214. Pad; 215. Inner ratchet; 216. Spring; 230. Dust removal assembly; 231. Large gear; 232. Small gear; 233. First pulley; 234. Synchronous belt; 235. Second pulley; 236. Drive column; 237. First bevel gear; 238. Second bevel gear; 239. Paddle rod; S. Base plate; T. Side plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] The present invention will be further described below with reference to the embodiments.

[0035] Example: A positioning structure for welding in pallet production, see attached figure. Figure 1 - Appendix Figure 10 ,include,

[0036] A plastic pallet welding machine 100 includes a chassis 110, conveyor tables 120 respectively disposed on both sides of the chassis 110, a mounting plate 130 adapted to be installed on the top of the conveyor table 120, a welding chamber 140 disposed in the inner cavity of the chassis 110, and a drive component 150 adapted to be installed on the top of the chassis 110 and used in conjunction with the welding chamber 140.

[0037] It should be noted that the chassis 110 is used to support the internal welding chamber 140 and the external conveyor table 120. The conveyor table 120 is used to transfer materials to the welding chamber 140 for welding via the mounting plate 130, the base plate S, and the side plate T. The welding chamber 140 integrates a heating and pressurizing welding device, thereby connecting the base plate S and the side plate T by heat fusion. The drive unit 150 is used to drive the heating and pressurizing welding device inside the welding chamber 140 to cooperate in completing the welding action.

[0038] The limiting mechanism 200 includes a fixing component 210 for fixing the base plate S and the side plate T above the mounting plate 130 by gravity, a clutch component 220 for transmitting rotational power of the fixing component 210 only during disassembly after the base plate S and the side plate T are welded, and a dust removal component 230 for blowing away welding impurities from the surfaces of the base plate S and the side plate T with the rotational power of the clutch component 220.

[0039] The fixing component 210 is located on the outside of the mounting plate 130, the clutch component 220 is located on the outer surface of the fixing component 210, and the dust removal component 230 is located on the outside of the mounting plate 130.

[0040] The fixing assembly 210 includes a concave plate 211 located directly above the mounting plate 130, a spiral post 212 fixedly connected to the bottom of the concave plate 211, an inner spiral sleeve 213 threadedly connected to the outer surface of the spiral post 212, and a rocker arm 214 fixedly connected to both sides of the inner spiral sleeve 213.

[0041] Specifically, the fixing assembly 210 also includes a hinge rod 215 hinged to the outer end face of the rocker arm 214, a slide plate 216 hinged to the other end of the hinge rod 215, a pressure block 217 fixedly connected to the top of the slide plate 216, and a spring 218 and a guide rod 219 respectively fixedly installed on the bottom of both sides of the concave plate 211.

[0042] It should be noted that the concave plate 211 is used to support the base plate S and the side plate T. The gravity of the base plate S and the side plate T drives the concave plate 211 and the spiral column 212. When the spiral column 212 moves down, it can drive the inner spiral sleeve 213 to rotate through the thread. Then, through the cooperation of the inner spiral sleeve 213 and the swing rod 214, it drives the hinge rod 215 to move. The hinge rod 215 drags the slide plate 216 and the pressure block 217 to move. Then, the pressure block 217 presses the base plate S with friction to prevent it from shaking when it moves with the mounting plate 130. The spring 218 is used to provide the restoring force for the concave plate 211 when the base plate S and the side plate T are removed. The guide rod 219 is used to limit the movement direction of the concave plate 211 to ensure that it can only be raised and lowered vertically.

[0043] Furthermore, a rotating bearing sleeve is installed at the connection between the inner spiral sleeve 213 and the mounting plate 130, the slide plate 216 is slidably connected to the bottom of the mounting plate 130, the outer surface of the pressure block 217 slides in contact with the inner surface of the mounting plate 130, the spring 218 abuts against the mounting plate 130, and the outer surface of the guide rod 219 slides in contact with the inner surface of the mounting plate 130.

[0044] Preferably, the clutch assembly 220 includes a turntable 221 fixedly sleeved on the outer surface of the inner spiral sleeve 213, a groove 222 formed on the inner surface of the turntable 221, a swivel post 223 fixedly connected to the inner wall of the groove 222, a pawl 224 rotatably sleeved on the outer surface of the swivel post 223, an inner ratchet 225 sleeved on the outer side of the turntable 221 and used in conjunction with the pawl 224, and a spring piece 226 fixedly installed on the inner surface of the turntable 221 and used in conjunction with the pawl 224.

[0045] It should be further explained that the turntable 221 can rotate synchronously with the inner spiral sleeve 213, and through the cooperation of the groove 222 and the rotating column 223, it drives the pawl 224 to perform circumferential motion. When the pawl 224 rotates counterclockwise with the inner spiral sleeve 213, it drives the pressure block 217 to clamp the rotation direction of the base plate S, and the inner ratchet 225 is squeezed into the groove 222. Then, it is quickly reset by the reaction force of the spring piece 226 and maintains the engagement state with the inner ratchet 225. When the pawl 224 rotates clockwise with the inner spiral sleeve 213, it drives the pressure block 217 away from the rotation direction of the base plate S. The pawl 224 then drives the inner ratchet 225 to rotate synchronously, and the rotational power is transmitted to the dust removal component 230.

[0046] It should be noted that the inner ratchet 225 is mounted on the bottom of the mounting plate 130 via a bearing seat, and the spring piece 226 and the pawl 224 abut against each other.

[0047] Furthermore, the dust removal assembly 230 includes a large gear 231 fixedly sleeved on the outer surface of the inner ratchet 225, a small gear 232 meshing with the outer surface of the large gear 231, a first belt disc 233 fixedly connected to the outer end face of the groove 222, a timing belt 234 sleeved on the outer surface of the first belt disc 233, and a second belt disc 235 sleeved on the inner surface of the other end of the timing belt 234.

[0048] Specifically, the dust removal assembly 230 also includes a transmission column 236 fixedly connected to the inner surface of the second belt reel 235, a first bevel gear 237 fixedly sleeved on the through end of the transmission column 236, a second bevel gear 238 meshing with the outer surface of the first bevel gear 237, and a blade rod 239 fixedly connected to the inner surface of the second bevel gear 238 for blowing away welding impurities.

[0049] The large gear 231 can rotate synchronously with the inner ratchet 225. Then, through the cooperation of the large gear 231 and the meshing small gear 232, the first belt disc 233 is driven to rotate. Then, through the cooperation of the first belt disc 233 and the synchronous belt 234, the second belt disc 235, the transmission column 236 and the first bevel gear 237 are driven to rotate synchronously. The first bevel gear 237 drives the second bevel gear 238 and the blade rod 239 to rotate synchronously. The airflow generated by the blade rod 239 blows away impurities from the surface of the bottom plate S and the side plate T.

[0050] Preferably, the first belt disc 233 is fixedly mounted on the bottom of the mounting plate 130 by bearings, and a rotating bearing sleeve is installed at the connection between the second bevel gear 238 and the mounting plate 130.

[0051] When using,

[0052] First, place the base plate S and the side plate T on the concave plate 211 in sequence. Their gravity causes the concave plate 211 to move down and compress the spring 218. At the same time, the concave plate 211 drives the spiral column 212 to move down. Then, the spiral column 212 drives the inner spiral sleeve 213 to rotate, which in turn drives the swing rods 214 on both sides to swing synchronously. The swing rods 214 pull the slide plate 216 to move linearly along the bottom of the mounting plate 130 through the hinge rod 215. The slide plate 216 drives the pressure block 217 to stick tightly to the base plate S, forming a clamping force. This fixes the base plate S above the mounting plate 130 and prevents the side plate T from falling off when the base plate S moves.

[0053] At the same time, the turntable 221 rotates synchronously with the inner spiral sleeve 213, and through the cooperation of the groove 222 and the spiral column 223, it drives the pawl 224 to perform circumferential motion. When the pawl 224 rotates counterclockwise with the inner spiral sleeve 213, it is squeezed into the groove 222 by the inner ratchet 225, and then quickly reset by the reaction force of the spring piece 226, maintaining the meshing state with the inner ratchet 225.

[0054] Subsequently, the control drive unit 150 moves the mounting plate 130 into the welding chamber 140 and drives the heating and pressurizing welding device in the welding chamber 140 to perform hot melt welding on the base plate S and the side plate T.

[0055] After welding is completed, the control drive 150 moves the mounting plate 130 to outside the welding chamber 140, and then lifts the concave plate 211 upwards for disassembly. At this time, the spiral column 212 moves upwards and drives the inner spiral sleeve 213 to rotate in the opposite direction, so that the inner spiral sleeve 213 drives the turntable 221 to rotate synchronously in the opposite direction. The turntable 221, through the cooperation of the groove 222 and the spiral column 223, drives the pawl 224 to drive the inner ratchet 225 and the large gear 231 to rotate. Through the cooperation of the large gear 231 and the small gear 232, it drives the first belt disc 233 to rotate. The first belt disc 233 drives the second belt disc 235, the transmission column 236 and the first bevel gear 237 to rotate synchronously via the synchronous belt 234. Then, the first bevel gear 237 drives the second bevel gear 238 and the blade rod 239 to rotate synchronously. The rotation of the blade rod 239 generates airflow, which blows away the welding impurities on the surface of the bottom plate S and the side plate T, completing the cleaning.

[0056] In summary, by setting the limiting mechanism 200, not only can the pressure block 217 be driven to stick tightly to the base plate S by the gravity of the base plate S and the side plate T, preventing the side plate T from shifting or falling off due to vibration of the base plate S during the conveying process, but also the paddle rod 239 can be automatically controlled to rotate to generate airflow during the disassembly process after the base plate S and the side plate T are welded, blowing away impurities such as smoke particles on the surface of the base plate S and the side plate T. This achieves the effect of improving welding accuracy, reducing welding defect rate, and saving the time cost required for independent product cleaning.

[0057] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning structure for welding in pallet production, comprising: A plastic pallet welding machine (100) includes a chassis (110), conveyor tables (120) respectively disposed on both sides of the chassis (110), a mounting plate (130) adapted to be installed on the top of the conveyor table (120), a welding chamber (140) disposed in the inner cavity of the chassis (110), and a drive unit (150) adapted to be installed on the top of the chassis (110) and used in conjunction with the welding chamber (140). The limiting mechanism (200) includes a fixing assembly (210) for fixing the base plate (S) and side plate (T) above the mounting plate (130) by gravity, a clutch assembly (220) for transmitting the rotational power of the fixing assembly (210) only during disassembly after the base plate (S) and side plate (T) are welded, and a dust removal assembly (230) for blowing away welding impurities from the surfaces of the base plate (S) and side plate (T) by the rotational power of the clutch assembly (220). The fixing component (210) is located on the outside of the mounting plate (130), the clutch component (220) is located on the outer surface of the fixing component (210), and the dust removal component (230) is located on the outside of the mounting plate (130). The fixing component (210) includes a concave plate (211) located directly above the mounting plate (130), a spiral post (212) fixedly connected to the bottom of the concave plate (211), an inner spiral sleeve (213) threadedly connected to the outer surface of the spiral post (212), and a rocker arm (214) fixedly connected to the two sides of the inner spiral sleeve (213).

2. The positioning structure for welding in pallet production according to claim 1, characterized in that, The fixing assembly (210) also includes a hinge rod (215) hinged to the outer end face of the swing rod (214), a slide plate (216) hinged to the other end of the hinge rod (215), a pressure block (217) fixedly connected to the top of the slide plate (216), and a spring (218) and a guide rod (219) respectively fixedly installed on the bottom of both sides of the concave plate (211).

3. The positioning structure for pallet production welding according to claim 2, characterized in that, A rotating bearing sleeve is installed at the connection between the inner spiral sleeve (213) and the mounting plate (130). The sliding plate (216) is slidably connected to the bottom of the mounting plate (130). The outer surface of the pressure block (217) is in sliding contact with the inner surface of the mounting plate (130). The spring (218) abuts against the mounting plate (130). The outer surface of the guide rod (219) is in sliding contact with the inner surface of the mounting plate (130). When the concave plate (211) moves downward under the gravity of the bottom plate (S) and the side plate (T), it can drive the inner spiral sleeve (213) to rotate through the spiral column (212), and then the inner spiral sleeve (213) drives the swing rod (214) to rotate synchronously.

4. The positioning structure for pallet production welding according to claim 3, characterized in that, The clutch assembly (220) includes a turntable (221) fixedly sleeved on the outer surface of the inner spiral sleeve (213), a groove (222) formed on the inner surface of the turntable (221), a swivel post (223) fixedly connected to the inner wall of the groove (222), a pawl (224) rotatably sleeved on the outer surface of the swivel post (223), an inner ratchet (225) sleeved on the outer side of the turntable (221) and used in conjunction with the pawl (224), and a spring piece (226) fixedly installed on the inner surface of the turntable (221) and used in conjunction with the pawl (224).

5. A positioning structure for pallet production welding according to claim 4, characterized in that, The inner ratchet (225) is mounted on the bottom of the mounting plate (130) via a bearing seat, and the spring (226) and the pawl (224) abut against each other.

6. The positioning structure for pallet production welding according to claim 5, characterized in that, The dust removal assembly (230) includes a large gear (231) fixedly sleeved on the outer surface of the inner ratchet (225), a small gear (232) meshing with the outer surface of the large gear (231), a first belt disc (233) fixedly connected to the outer end face of the groove (222), a timing belt (234) sleeved on the outer surface of the first belt disc (233), and a second belt disc (235) sleeved on the inner surface of the other end of the timing belt (234).

7. A positioning structure for pallet production welding according to claim 6, characterized in that, The dust removal assembly (230) further includes a transmission column (236) fixedly connected to the inner surface of the second pulley (235), a first bevel gear (237) fixedly sleeved on the through end of the transmission column (236), a second bevel gear (238) meshing with the outer surface of the first bevel gear (237), and a blade rod (239) fixedly connected to the inner surface of the second bevel gear (238) for blowing away welding impurities.

8. A positioning structure for welding in pallet production according to claim 7, characterized in that, The first pulley (233) is fixedly mounted on the bottom of the mounting plate (130) by bearings, and a rotating bearing sleeve is installed at the connection between the second bevel gear (238) and the mounting plate (130).

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