Dispensing device for OBC3.6KW aluminum alloy die casting production

Abstract

The invention discloses an adhesive dispensing device for OBC3.6KW aluminum alloy die casting production, and particularly relates to the technical field of adhesive dispensing machines. By arranging an attaching unit and an adhesive conveying unit, a die casting enters an adhesive dispensing chamber in a fixed-point mode, a lifting plate and an attaching part below the lifting plate move downwards in the vertical direction till the lifting plate enters the interior of the die casting; the attaching part is tightly attached to the inner wall of the die casting first, the attaching part is higher than the die casting, the inner side of the die casting is adaptively restrained, and leakage of dispensing liquid is avoided; a connecting plate in the glue conveying unit moves along a preset casting dispensing track, and a pressing wheel descends by a set height along with movement of the connecting plate; the adjacent glue solutions are rolled and flattened, a continuous glue line is formed along the inner contour of the die casting, and the sprayed glue solution is further spread after being rolled by a pressing wheel, so that the surface of the glue line is smooth, the width is consistent, the problems of glue breaking, glue stacking or uneven local glue thickness are avoided, and a stable and continuous sealing glue layer is formed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of dispensing machines, in particular to a dispensing device for OBC 3.6KW aluminum alloy die casting production. BACKGROUND

[0002] OBC 3.6KW aluminum alloy die casting refers to a structural part formed by an aluminum alloy die casting process in a vehicle-mounted charger (OBC) with a rated power of 3.6KW, which is mainly used as a shell, a cover or a functional load-bearing structure. The OBC shell and related aluminum alloy die castings usually need to be dispensed in the assembly, sealing, protection or heat conduction process, such as forming a sealing rubber ring on the shell joint surface, forming a waterproof rubber layer on the periphery of a specific cavity or threaded hole, forming an adhesive fixing glue point or heat conduction glue coating area on the local structure. The dispensing quality directly affects the subsequent assembly consistency, sealing reliability and product durability.

[0003] According to the search, the utility model patent with the publication number CN208050276U discloses a dispensing device for OBC 3.6KW aluminum alloy die casting production, which is convenient for stabilizing the height position of the dispensing machine body, meeting the use of various operators, and facilitating the movement and stable placement of the dispensing machine body.

[0004] In the dispensing process, since the dispensing liquid is in a flowing or un-solidified state, it is easy to overflow from the edge or gap position, causing glue leakage, internal surface pollution and affecting the glue layer profile forming, thereby causing uneven sealing glue layer thickness, local failure or increased rework rate. SUMMARY

[0005] The purpose of the present application is to provide a dispensing device for OBC 3.6KW aluminum alloy die casting production to solve the problems mentioned in the background.

[0006] The technical problem solved by the present application is: Since the dispensing liquid is in a flowing or un-solidified state, it is easy to overflow from the edge or gap position, causing glue leakage, internal surface pollution and affecting the glue layer profile forming, thereby causing uneven sealing glue layer thickness, local failure.

[0007] The present application can be realized by the following technical solutions: A dispensing device for OBC 3.6KW aluminum alloy die casting production, comprising a dispensing chamber installed in the middle of a base, a conveying unit installed into the interior of the dispensing chamber on the base, the conveying unit being used for sequentially conveying a plurality of die castings; The interior of the dispensing chamber is provided with a fitting unit pushed by an oil cylinder and in close contact with the inner wall of the die casting; The fitting unit comprises a lifting plate, a fitting piece is arranged below the lifting plate, an L-shaped mounting frame is mounted on the inner wall of the fitting piece, and the upper end of the mounting frame is fixed to the bottom surface of the lifting plate; A rectangular opening is formed between the fitting piece and the lifting plate, a glue feeding unit is mounted on the bottom surface of the lifting plate and moves along the glue feeding track in the pressure casting piece; A plurality of nozzles for spraying glue are embedded on the lower surface of the lifting plate and located outside the sealing frame; The glue feeding unit comprises a connecting plate which moves along the glue feeding track in the pressure casting piece, and a pressing wheel for pressing adjacent glue is arranged below the connecting plate.

[0008] Further technical improvements of the present application are that four chain wheels are rotatably mounted on the lower surface of the lifting plate, one of the chain wheels is driven by a servo motor, the four chain wheels are respectively arranged above four ends of the glue feeding track, and the same chain is engaged with each of the chain wheels; The connecting plate is provided with two and arranged on the surface of the corresponding side chain.

[0009] Further technical improvements of the present application are that a T-shaped limiting rod is mounted on the upper surface of the pressing wheel, and the limiting rod is slidably arranged with the connecting plate; An electric push rod for pushing the pressing wheel to move is mounted on the upper surface of the connecting plate.

[0010] Further technical improvements of the present application are that the fitting piece comprises a sealing frame, a recessed groove is arranged on the outer side of the sealing frame, a buffer pad is mounted on the outer side of the recessed groove, and an inflation air bag for pushing the buffer pad to expand outward is mounted in the recessed groove; An air inlet is mounted on the inner wall of the sealing frame and communicates with the inflation air bag.

[0011] Further technical improvements of the present application are that the conveying unit comprises two fixed vertical plates, a conveying belt is mounted on the inner wall of each fixed vertical plate, a plurality of positioning pieces for positioning the pressure casting piece are arranged between the two conveying belts, and the pressure casting piece on the corresponding positioning piece is conveyed to the lower side of the glue feeding unit after each transmission of the conveying belt.

[0012] Further technical improvements of the present application are that each positioning piece comprises a bearing plate, and a side plate for limiting the side surface of the pressure casting piece is mounted on the upper end of the bearing plate.

[0013] Compared with the prior art, the present application has the following beneficial effects: 1、By setting the fitting unit and the rubber walking unit, the die casting enters the point glue chamber, the lifting plate and the fitting part below it move downward along the vertical direction, until it enters the inside of the die casting, the fitting part first tightly fits with the inner wall of the die casting, and the height of the fitting part is higher than the height of the die casting, which can adapt to the constraint of the inside of the die casting, avoid the leakage of the glue, the connecting plate in the rubber walking unit moves along the preset die casting glue track, the pressure wheel descends to a certain height and moves with the connecting plate, which can roll and flatten the adjacent glue, form a continuous glue line along the contour of the die casting, the glue line is flat and has consistent width after the glue is rolled and spread by the pressure wheel, which can avoid the problems of broken glue, stacked glue or uneven local glue thickness, and a stable and continuous sealing glue layer is formed; 2、By setting the fitting part, the inflatable air bag is inflated through the air inlet, at this time the valve is opened, the gas enters the inflatable air bag from the outside, which makes it swell and push the buffer pad tightly against the inner wall of the die casting, so as to realize the circumferential limiting and flexible clamping of the die casting, the buffer pad seals and blocks the rubber walking area of the die casting, and the buffer pad and the inflatable air bag form an adjustable fitting contact surface, which can adapt to the size tolerance and local deformation of the inner wall of the die casting, prevent glue overflow and improve the glue quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to facilitate the understanding of those skilled in the art, the present application will be further described below with reference to the accompanying drawings.

[0015] Figure 1 It is an external structure diagram of the present application; Figure 2 It is an installation structure diagram of the sealing frame of the present application; Figure 3 It is a partial enlarged view of A in the present application Figure 2 Figure 4 It is an installation structure diagram of the inflatable air bag and the sealing frame of the present application; Figure 5 It is an installation structure diagram of the chain wheel and the chain of the present application.

[0016] In the figure: 1, conveying strip; 2, positioning part; 3, glue dispensing chamber; 4, lifting plate; 5, mounting frame; 6, sealing frame; 7, chain wheel; 8, chain; 9, connecting plate; 10, pressure wheel; 11, limiting rod; 12, rectangular opening; 13, inflatable air bag; 14, buffer pad; 15, electric push rod; 16, concave groove; 17, air inlet. DETAILED DESCRIPTION

[0017] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined invention purpose, the specific embodiments, structures, features and effects according to the present application are described in detail as follows in combination with the drawings and preferred embodiments. ​

[0018] Referring to Figures 1-5 As shown in the drawings, the present application provides a dispensing device for OBC3.6KW aluminum alloy die casting production, comprising a dispensing chamber 3 installed in the middle of the base, a conveying unit installed on the base and entering the inside of the dispensing chamber 3, the conveying unit is used for conveying a plurality of die castings in sequence; The inside of the dispensing chamber 3 is provided with a fitting unit driven by an oil cylinder and closely contacting with the inner wall of the die casting; The fitting unit comprises a lifting plate 4, a fitting part is arranged below the lifting plate 4, an L-shaped mounting bracket 5 is installed on the inner wall of the fitting part, and the upper end of the mounting bracket 5 is fixed with the bottom surface of the lifting plate 4; A rectangular opening 12 is formed between the fitting part and the lifting plate 4, and a glue feeding unit is installed on the bottom surface of the lifting plate 4 and moves along the dispensing trajectory inside the die casting through the rectangular opening 12; A plurality of nozzles for spraying dispensing liquid are embedded on the lower surface of the lifting plate 4 and outside the sealing frame 6; The glue feeding unit comprises a connecting plate 9 moving along the dispensing trajectory inside the die casting, and a pressure roller 10 for pressing adjacent dispensing liquid is arranged below the connecting plate 9 and is lifted.

[0019] The die casting of the present application is OBC3.6kW aluminum alloy die casting; In the working process, the conveying unit sequentially conveys a plurality of die castings to the dispensing station inside the dispensing chamber 3. After the die casting is in place, the fitting unit is driven by the oil cylinder to act, so that the lifting plate 4 and the fitting part below it move downward along the vertical direction until they enter the inside of the die casting, the fitting part closely contacts with the inner wall of the die casting, and the height of the fitting part is higher than the height of the die casting, which adaptively restricts the inside of the die casting, avoids the leakage of dispensing liquid, avoids the deviation of glue line caused by conveying tolerance or clamping looseness, and thus improves the consistency and repeatability of dispensing trajectory.

[0020] After the fitting unit is in a stable fitting state, a plurality of nozzles arranged on the lower surface of the lifting plate 4 and outside the sealing frame 6 quantitatively spray dispensing liquid, the connecting plate 9 in the glue feeding unit moves along the preset dispensing trajectory of the die casting, at the same time, the pressure roller 10 is set to move downward by a certain height and moves with the connecting plate 9 to roll and press the adjacent glue liquid, forming a continuous glue line along the contour of the inside of the die casting, the sprayed glue liquid is further spread after being rolled and pressed by the pressure roller 10, so that the surface of the glue line is smooth and the width is consistent, avoiding the problems of broken glue, stacked glue or uneven local glue thickness, and forming a stable and continuous sealing glue layer. After dispensing is completed, the fitting unit is moved upward for resetting, and the die casting is conveyed to the next process by the conveying unit.

[0021] Referring to Figure 3 and Figure 5As shown, the lower surface of the lifting plate 4 is rotatably installed with four chain wheels 7, one of which is driven by a servo motor, and the four chain wheels 7 are respectively installed above the four ends of the dispensing track, and each chain wheel 7 is engaged with the same chain 8. The connecting plate 9 is provided with two and installed on the surface of the corresponding side chain 8.

[0022] When the servo motor is started, the chain wheel 7 is driven and the chain 8 is circularly moved in the preset direction, and the chain 8 as a moving carrier makes the connecting plate 9 installed on its surface move synchronously along the dispensing track inside the die casting. With the circular movement of the chain 8, the two connecting plates 9 move in the dispensing track in turn, realizing the reciprocating dispensing and wiping operation on the same closed track, thereby avoiding the idle time of the single dispensing return stroke and improving the dispensing operation efficiency.

[0023] Referring to Figure 3 As shown, the upper surface of the pressure wheel 10 is installed with a T-shaped limiting rod 11, and the limiting rod 11 is slidably arranged with the connecting plate 9; The upper surface of the connecting plate 9 is installed with an electric push rod 15 for pushing the pressure wheel 10 to move; The pressure wheel 10 is elastically installed on the pressure frame to provide a floating compensation space for the pressure wheel 10.

[0024] When the dispensing unit moves along the dispensing track, the electric push rod 15 drives the limiting rod 11 to push downward according to the control instruction, thereby driving the pressure wheel 10 to generate an adjustable pressing force relative to the chain 8, so that the pressure wheel 10 performs the synchronous rolling and pressing process on the glue line after dispensing, and the electric push rod 15 dynamically adjusts the pressing pressure and the downward stroke of the pressure wheel 10 according to the requirements of different areas of the dispensing path, so that the glue forms a continuous and uniform glue layer thickness in the linear segment, the corner segment and the local structure change area.

[0025] Referring to Figure 4 As shown, the fitting member includes a sealing frame 6, the outer side of the sealing frame 6 is provided with a recess groove 16, the outer side of the recess groove 16 is installed with a buffer pad 14, and the inner side of the recess groove 16 is installed with an inflation air bag 13 for pushing the buffer pad 14 to open outward; The inner wall surface of the sealing frame 6 is installed with an air inlet interface 17 in communication with the inflation air bag 13.

[0026] An inflation / deflation valve is installed on the vent 17. During operation, when the die-cast part is transported to the dispensing station, the control system inflates the expansion bladder 13 through the vent 17. At this time, the valve opens, and gas enters the expansion bladder 13 from the outside, causing it to inflate and push the buffer pad 14 to press against the inner wall of the die-cast part, thereby achieving circumferential limiting and flexible clamping of the die-cast part. When the valve opens in the opposite direction, gas is discharged from the expansion bladder 13 to release the gas. The buffer pad 14 retracts and resets, and the die-cast part can then smoothly exit the dispensing station. The buffer pad 14 and the expansion bladder 13 form an adjustable contact surface to adapt to the dimensional tolerances and local deformations of the inner wall of the die-cast part. During the clamping process, it absorbs vibration and impact, ensuring stable and reliable dispensing operation.

[0027] See Figure 1 As shown, the conveying unit includes two fixed upright plates. Each fixed upright plate has a conveyor belt 1 installed on its inner wall. Several positioning parts 2 for positioning the die-casting parts are installed between the two conveyor belts 1. Each time the conveyor belt 1 moves, it conveys the die-casting parts on the corresponding positioning parts 2 to the bottom of the glue conveying unit. Each positioning component 2 is spaced apart and moves synchronously with the conveyor belt 1 to carry and transport the die-cast parts; Each positioning element 2 includes a support plate, and a side plate that restricts the side of the die casting is mounted on the upper end of the support plate.

[0028] The side plate limits and constrains the side wall of the die casting to prevent the die casting from shifting, tilting or rotating during the transportation process, and to ensure the stability of the die casting when it enters the dispensing station. When the conveyor belt 1 is driven, the positioning component 2 enters the dispensing chamber 3 in sequence. Each time the conveyor belt 1 completes a transmission pitch, it can transport the die-cast part on the current positioning component 2 to the bottom of the dispensing unit, so that the die-cast part is accurately positioned at the dispensing station, which is convenient for subsequent bonding and dispensing operations.

[0029] In use, this invention, by setting up a bonding unit and a glue delivery unit, allows the die-casting part to enter the glue delivery chamber 3 at a fixed point. The lifting plate 4 and the bonding part below it move downwards in the vertical direction until they enter the interior of the die-casting part. The bonding part first fits tightly against the inner wall of the die-casting part, and the height of the bonding part is higher than the height of the die-casting part, which adapts and constrains the inner side of the die-casting part to prevent the glue from leaking. The connecting plate 9 in the glue delivery unit moves along the preset glue delivery trajectory of the casting part, and the pressure roller 10 moves down to a set height and, with the movement of the connecting plate 9, rolls and smooths the adjacent glue, forming a continuous glue line along the inner contour of the die-casting part. The sprayed glue is further spread after being rolled by the pressure roller 10, making the glue line surface flat and the width consistent, avoiding problems such as glue breakage, glue accumulation, or uneven glue thickness in some areas, and forming a stable and continuous sealing glue layer. By setting up a fitting component, air is injected into the expansion airbag 13 through the vent 17. At this time, the valve opens, and gas enters the expansion airbag 13 from the outside, causing it to inflate and push the buffer pad 14 to adhere tightly to the inner wall of the die casting. This achieves circumferential limiting and flexible clamping of the die casting. The buffer pad 14 seals and blocks the glue flow area of ​​the die casting. The buffer pad 14 and the expansion airbag 13 form an adjustable fitting contact surface, which can adapt to the dimensional tolerances and local deformations of the inner wall of the die casting, prevent glue overflow, and improve the glue dispensing quality.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A dispensing device for the production of OBC3.6KW aluminum alloy die-cast parts, comprising a dispensing chamber (3) installed in the middle of a base, characterized in that: A conveying unit is installed on the base to enter the dispensing chamber (3). The conveying unit is used to convey several die-cast parts in sequence. The dispensing chamber (3) is equipped with a bonding unit that is pushed by a hydraulic cylinder and in close contact with the inner wall of the die-casting part; The bonding unit includes a lifting plate (4), and a bonding component is provided below the lifting plate (4). An L-shaped mounting bracket (5) is installed on the inner wall of the bonding component. The upper end of the mounting bracket (5) is fixed to the bottom surface of the lifting plate (4). A rectangular opening (12) is formed between the bonding component and the lifting plate (4). The bottom surface of the lifting plate (4) is equipped with a glue-carrying unit that passes through the rectangular opening (12) and moves along the glue-dispensing trajectory inside the die-casting component. Several nozzles for spraying adhesive liquid are embedded on the lower surface of the lifting plate (4) and outside the sealing frame (6). The glue dispensing unit includes a connecting plate (9) that moves along the glue dispensing trajectory within the die-casting part, and a pressure roller (10) for hydraulically applying glue to adjacent dispensing parts is provided below the connecting plate (9).

2. The dispensing device for producing OBC3.6KW aluminum alloy die-casting parts according to claim 1, characterized in that, The lower surface of the lifting plate (4) is rotatably mounted with four sprockets (7), one of which is driven by a servo motor. The four sprockets (7) are respectively mounted above the four ends of the dispensing trajectory, and each sprocket (7) is meshed with the same chain (8). Two connecting plates (9) are provided and installed on the surface of the corresponding side chains (8).

3. The dispensing device for producing OBC3.6KW aluminum alloy die-casting parts according to claim 1, characterized in that, The upper surface of the pressure roller (10) is equipped with a T-shaped limiting rod (11), which is slidably disposed with the connecting plate (9); An electric push rod (15) for pushing the pressure roller (10) to move is installed on the upper surface of the connecting plate (9).

4. The dispensing device for producing OBC3.6KW aluminum alloy die-casting parts according to claim 1, characterized in that, The fitting component includes a sealing frame (6), the outer side of the sealing frame (6) is provided with a recessed groove (16) facing inward, a buffer pad (14) is installed on the outer side of the recessed groove (16), and an inflatable airbag (13) that pushes the buffer pad (14) to open outward is installed inside the recessed groove (16). The inner wall of the sealing frame (6) is equipped with a ventilation port (17) that communicates with the inflatable airbag (13).

5. The dispensing device for producing OBC3.6KW aluminum alloy die-cast parts according to claim 1, characterized in that, The conveying unit includes two fixed upright plates. Each fixed upright plate has a conveyor belt (1) installed on its inner wall. Several positioning parts (2) for positioning the die-casting parts are installed between the two conveyor belts (1). Each time the conveyor belt (1) is driven once, it conveys the die-casting parts on the corresponding positioning parts (2) to the bottom of the glue conveying unit.

6. The dispensing device for producing OBC3.6KW aluminum alloy die-casting parts according to claim 5, characterized in that, Each positioning element (2) includes a support plate with a side plate that restricts the side of the die casting mounted on the upper end of the support plate.

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