Sunroof sealant leak-proof channel structure and injection molding method thereof

Abstract

The application relates to a sunroof sealant leakage prevention glue channel structure and an injection molding method thereof, and mainly discloses a sunroof sealant leakage prevention glue channel structure which comprises a guide rail, a frame and sealant. The guide rail and the frame are overlapped on the upper and lower parts of the structure, the overlapping part of the frame is provided with a first connecting piece, the overlapping part of the guide rail is provided with a second connecting piece, the upper surface of the first connecting piece is provided with a glue channel groove, the second connecting piece is provided with a glue injection hole for facing the glue channel groove, the glue channel groove is used for filling the sealant, and the groove edge of the glue channel groove is protrusively provided with a glue blocking side wall extending along the length direction of the glue channel groove. When the second connecting piece is overlapped on the first connecting piece, the lower surface of the second connecting piece extrudes the glue blocking side wall, the glue blocking side wall is adaptively plastically deformed to form a glue blocking structure. The application has the effect of reducing glue overflow.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile sunroof frame structure, and particularly to a sunroof sealant leak-proof structure and an injection molding method thereof. BACKGROUND

[0002] The automobile sunroof frame is a quadrilateral frame structure assembled by a front frame, a rear frame and two side rails. The front frame and the rear frame (hereinafter collectively referred to as the frame) are respectively connected with the end portions of the side rails and are fixed by bolts. A sealant is arranged at the joint to prevent rainwater from flowing into the vehicle through the joint gap when the rainwater flows on the sunroof frame.

[0003] The existing leak-proof structure is that the upper surface of the frame is provided with a sealant flow channel, and the rail is provided with a glue injection hole. After assembly, the lower surface of the rail blocks the upper slot of the sealant flow channel. Then, the glue gun of the glue injection machine injects sealant into the sealant flow channel through the glue injection hole. The sealant flows along the path of the sealant flow channel and is filled. After solidification, the leak-proof structure is formed.

[0004] However, the rail and the frame are both plastic parts, and tolerances may occur during manufacturing or they may be easily deformed by temperature, thereby causing a gap at the joint between the rail and the frame. When the gap is too large, the sealant in the sealant flow channel may leak and overflow, and even stick to other parts to cause pollution and affect the appearance. SUMMARY

[0005] In order to reduce the leakage of sealant, the present application provides a sunroof sealant leak-proof structure and an injection molding method thereof.

[0006] The sunroof sealant leak-proof structure provided by the present application adopts the following technical solution:

[0007] A sunroof sealant leak-proof structure includes a rail, a frame and a sealant. The rail and the frame are connected in an upper and lower manner. The joint part of the frame is a first connecting piece, and the joint part of the rail is a second connecting piece. The upper surface of the first connecting piece is provided with a sealant flow channel. The second connecting piece is provided with a glue injection hole for facing the sealant flow channel. The sealant flow channel is used to fill the sealant. The groove edge of the sealant flow channel is protrudingly configured with a glue blocking wall extending along the length direction of the sealant flow channel. When the second connecting piece is connected to the first connecting piece, the lower surface of the second connecting piece extrudes the glue blocking wall, and the glue blocking wall is adaptively deformed plastically to form a glue blocking structure.

[0008] By using the adaptive plastic deformation of the glue blocking wall, the deformed glue blocking wall forms a certain profiling effect between the first connecting piece and the second connecting piece to block the joint gap, thereby reducing the overflow of the sealant.

[0009] Optionally, a circular sol pool is integrally formed in the middle of the glue flow channel, the sol pool is arranged opposite to the glue injection hole, and the diameter of the sol pool is greater than the width of the glue flow channel.

[0010] By using the above technical solution, the sol pool can increase the ease of aligning the glue injection hole with the glue flow channel, thereby reducing the requirement for manufacturing precision.

[0011] In addition, the sol pool can accommodate more sealant, so that the heat of the high-temperature sealant accumulates at this position, and the sealant gradually flows from the heat accumulation position to both sides, so that the temperature of the sealant is as stable as possible, and the sealant is not easy to solidify due to temperature loss, thereby increasing the flowability and flow range of the sealant.

[0012] Optionally, the glue flow channel has a curved portion, and an overflow pool is formed in the upper surface of the first connecting piece, the overflow pool extends along the length of the glue flow channel, and the overflow pool is located on the outer side of the curved portion of the glue flow channel.

[0013] By using the above technical solution, by setting the curved portion, the glue flow channel can be adaptively improved according to the actual shape of the frame to optimize the structural arrangement of the frame, and the existence of the curved portion will increase the difficulty of the sealant flow to a certain extent. When the sealant flows to the curved portion, the impact force of the sealant is applied to the glue blocking side wall on the outer side of the curved portion, and the sealant is easy to overflow from the broken gap of the glue blocking side wall. Therefore, by setting the overflow pool, the overflow of the sealant can be controlled within a specific range.

[0014] In addition, after the sealant solidifies in the overflow pool, it forms a certain blocking effect to reduce the further overflow or outflow of the sealant.

[0015] Optionally, the glue blocking side wall comprises a first wavy side wall and a second wavy side wall, the first wavy side wall is arranged close to the glue flow channel relative to the second wavy side wall, the trough of the first wavy side wall and the peak of the second wavy side wall are arranged opposite to each other along the width direction of the glue flow channel, the gap between the trough of the first wavy side wall and the peak of the second wavy side wall forms an oval accommodating area, a through gap is formed between the peak of the first wavy side wall and the trough of the second wavy side wall, and the height of the first wavy side wall and the second wavy side wall is flush.

[0016] By using the above technical solution, by setting the first wavy side wall and the second wavy side wall, the area available for the second connecting piece to press is larger, and the first wavy side wall and the second wavy side wall are arranged opposite to each other, so that the pressing force is more uniform. That is, when the second connecting piece is pressed on the first wavy side wall and the second wavy side wall, the first wavy side wall and the second wavy side wall will adaptively deform more uniformly, so that the glue blocking structure is more stable, and the glue blocking effect is better.

[0017] Optionally, the accommodating area and the passing gap are filled with nano calcium carbonate powder, the filling height of the nano calcium carbonate powder is lower than the height of the upper opening of the accommodating area, and the trough of the first wavy side wall is provided with a passing gap; when the sealant enters the accommodating area and the passing gap through the broken gap of the extrusion-broken first wavy side wall and the passing gap, the sealant is bonded with the nano calcium carbonate powder.

[0018] By adopting the technical scheme, firstly, when the second connecting piece is pressed on the first wavy side wall and the second wavy side wall, the first wavy side wall and the second wavy side wall will be more uniformly subjected to adaptive plastic deformation and breaking, the nano calcium carbonate powder is relatively fine and has a certain fluidity, and the nano calcium carbonate powder will be filled into the broken gap of the first wavy side wall and the second wavy side wall to improve the blocking effect of the glue-blocking structure.

[0019] Secondly, when the sealant enters the accommodating area and the passing gap through the broken gap of the extrusion-broken first wavy side wall and the passing gap, the sealant is bonded with the nano calcium carbonate powder, the surface area of the nano calcium carbonate powder is relatively large, the bonding effect of the sealant can be greatly improved, and the sealant will also gradually penetrate into the nano calcium carbonate powder, and in combination with the shaping effect of the first wavy side wall and the second wavy side wall, a stable blocking wall structure can be formed.

[0020] Optionally, the accommodating area is provided with an X-shaped plastic piece arranged vertically, the X-shaped plastic piece is embedded in the nano calcium carbonate powder, and the upper end of the X-shaped plastic piece is higher than or equal to the height of the upper opening of the accommodating area; when the second connecting piece is overlapped on the first connecting piece, the lower surface of the second connecting piece extrudes the upper end of the X-shaped plastic piece, and the X-shaped plastic piece is subjected to adaptive plastic deformation.

[0021] By adopting the technical scheme, when the X-shaped plastic piece is subjected to adaptive plastic deformation, the nano calcium carbonate powder near the X-shaped plastic piece will be moved to both sides to be further filled into the passing gap, so that the filling uniformity of the nano calcium carbonate powder is improved.

[0022] Secondly, the stability of the X-shaped plastic piece is relatively high, and in the process of being subjected to force together with the wavy side wall, the deformation direction of the wavy side wall can be constrained, so that the deformation deviation of the wavy side wall is limited, and the forming stability of the glue-blocking structure is improved.

[0023] The application also provides an injection molding method of a sunroof sealant leak-proof structure, which adopts the following technical scheme:

[0024] The injection molding method of the sunroof sealant leak-proof glue channel structure comprises the following steps: the second connecting piece is overlapped on the first connecting piece, the guide rail is fixed on the frame by bolts, and the lower surface of the second connecting piece extrudes the glue-blocking side wall during the screwing process, the glue-blocking side wall is plastically deformed to form a glue-blocking structure; sealant is injected into the glue channel groove through the glue injection hole, and the sealant gradually fills the glue channel groove, and the leak-proof glue channel structure is formed after solidification.

[0025] The injection molding method of the sunroof sealant leak-proof glue channel structure comprises the following steps: the slot bottom of the glue channel slot of the first connecting piece is provided with a through hole, the second connecting piece is overlapped on the first connecting piece, the guide rail is fixed on the frame by bolts, the lower surface of the second connecting piece extrudes the first and second wavy side walls during the screwing process, the first and second wavy side walls are plastically deformed to form a glue blocking structure, then the auxiliary injection molding of the sealant is performed by using a film pasting device, the film pasting device comprises a TPU film, a unwinding roller, a winding roller, a first lifting structure, a second lifting structure, a die head and a plurality of blowing and suction pipes, the TPU film is located directly below the first connecting piece, the two ends of the TPU film are wound on the winding roller and the unwinding roller respectively, the first lifting structure is used to drive the winding roller and the unwinding roller to jointly lift, the TPU film is provided with a tear line arranged thereon, the shape profile of the tear line is matched with the through hole, the size of the tear line is larger than that of the through hole, the inner edge of the tear line is provided with an adhesive, and the area surrounded by the tear line is an occlusion part; the die head is a shell structure, the die head has an upper opening, the shape profile of the upper opening of the die head is matched with the through hole, the size of the upper opening of the die head is smaller than that of the tear line and larger than that of the through hole, the upper opening edge of the die head is provided with a rubber ring, the die head is located directly below the TPU film, the second lifting structure is used to drive the die head to lift, a plurality of blowing and suction pipes are arranged in the die head, and the blowing and suction pipes are arranged along the length direction of the through hole; after the first and second wavy side walls are plastically deformed, the first lifting structure drives the winding roller and the unwinding roller to jointly rise, the TPU film is close to the lower surface of the first connecting piece, the second lifting structure drives the die head to rise, the occlusion part is tightly pressed on the lower surface of the first connecting piece at the edge of the upper opening of the die head, and the adhesive pastes the occlusion part on the lower surface of the first connecting piece; part of the sealant is injected into the glue channel slot through the glue injection hole, the sealant gradually enters the glue channel slot, the injection of the sealant is stopped, the heat of the sealant in a molten state is transferred to the occlusion part, the occlusion part is softened, the blowing and suction pipes inject gas into the die head cavity, the gas pressure is applied upward on the occlusion part, the occlusion part is deformed upward and pastes on the lower surface of the second connecting piece, the edge of the occlusion part and the inner edge of the through hole form an included angle area, the sealant is extruded into the included angle area by the occlusion part, after the sealant in the included angle area is preliminarily solidified, the die head cavity is suctioned by the blowing and suction pipes, the die head cavity is under negative pressure, the occlusion part is deformed downward to provide space for the subsequent continuous injection of the sealant, the remaining sealant is injected into the glue channel slot through the glue injection hole, the sealant fills the glue channel slot, and the leak-proof glue channel structure is formed after solidification; the occlusion part is bonded with the sealant, the winding roller, the unwinding roller and the die head are moved downward together, the tear line is broken, and the occlusion part is peeled off from the TPU film.

[0026] By adopting the technical scheme, the inner cavity shape of the glue channel is changed by using the heat deformation and shape change characteristics of the TPU film, and the interference between the TPU film and the edge of the through hole is combined to form the included angle area, so that part of the sealant is transferred to the vicinity of the glue blocking wall, and the part of the sealant is in full and gentle contact and bonding with the glue blocking wall and the nano calcium carbonate powder first to form a stable glue blocking wall structure, thereby reducing the overflow of the sealant after the subsequent sealant completely fills the glue channel.

[0027] Secondly, the blocking part can be peeled off from the TPU film through the easy-to-tear line to permanently remain on the lower surface of the frame to play a permanent sealing role and further ensure the waterproof effect.

[0028] Optionally, the order of the air injection of the blowing and sucking pipes into the inner cavity of the die head is: the blowing and sucking pipes at the middle position of the die head start to inject air, and the blowing and sucking pipes away from the middle position of the die head inject air in sequence.

[0029] By adopting the technical scheme, the deformation order of the blocking part is changed by setting the air injection order, that is, the blocking part deforms upward from the middle to the two sides, and the deformation of the blocking part can gradually extrude the sealant in the glue channel to the two sides of the length direction of the glue channel, so that the sealant can flow more uniformly to each position of the glue channel, so that each included angle area has sealant.

[0030] Moreover, the glue gun remains in the cooperating state with the glue injection hole during the deformation of the blocking part to avoid the overflow of the sealant from the glue injection hole.

[0031] Optionally, the film pasting device further comprises a vertical vibration structure, a plurality of support air pipes are vertically slidably connected to the die head, each support air pipe is arranged at intervals along the length direction of the through hole, the upper end of the support air pipe is provided with a suction disc, the size of the suction disc is smaller than the width of the blocking part, and the vertical vibration structure is used to drive each support air pipe to vibrate up and down; during the process of injecting the remaining sealant into the glue channel through the glue injection hole, the lower surface of the blocking part is sucked by the suction disc, and the vertical vibration structure drives the blocking part to vibrate up and down through the support air pipe and the suction disc in sequence, so as to accelerate the flow speed of the sealant and expand the coverage area of the sealant; during the vibration process, the height of the suction disc is always higher than the lower surface of the first connecting piece.

[0032] By adopting the technical scheme, the volume of the glue channel is constantly changed by the up-and-down vibration of the suction disc, and the glue gun remains in the cooperating state with the glue injection hole during the deformation of the blocking part, so that the sealant will flow to the place with small pressure under the vibration of the suction disc, that is, the sealant will flow to the two sides of the length direction of the glue channel, thereby accelerating the flow speed of the sealant and expanding the coverage area of the sealant.

[0033] And, during the vibration process, the height of the suction cup is always higher than the lower surface of the first connecting piece, that is, the middle position of the blocking part will be higher than the lower surface of the first connecting piece, and after the sealing glue is completely solidified, it will present the situation that the solidified state sealing glue is thick on both sides and thin in the middle on the cross section along the width direction of the glue channel, that is, the sealing glue near the glue blocking side wall is thicker, and the water seepage path is lengthened, so that the waterproof effect of this position can be effectively improved.

[0034] Secondly, the contact area between the blocking part made of TPU material and the sealing glue is larger and the adhesion effect is better, so that rainwater is also not easy to seep into the gap between the blocking part and the sealing glue.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. By arranging the elongated glue blocking side wall, the adaptive plastic deformation of the glue blocking side wall will form a certain profiling effect between the first connecting piece and the second connecting piece to block the lap joint gap, thereby reducing the overflow of the sealing glue;

[0037] 2. By arranging the glue overflow pool, the overflow of the sealing glue can be controlled within a certain range, and after the sealing glue is solidified in the glue overflow pool, it forms a certain blocking effect to reduce the further overflow or outflow of the sealing glue;

[0038] 3. By arranging the nano calcium carbonate powder, the nano calcium carbonate powder will fill into the broken gap of the first and second wave-shaped side walls to improve the blocking effect of the glue blocking structure, and when the sealing glue passes through the broken gap of the broken first wave-shaped side wall and enters the containing area through the gap and through the gap, the sealing glue is bonded with the nano calcium carbonate powder, the surface area of the nano calcium carbonate powder is large, which can greatly improve the adhesion effect of the sealing glue, and the sealing glue will also gradually penetrate into the nano calcium carbonate powder, and combined with the shaping effect of the first and second wave-shaped side walls, a stable blocking wall structure can be formed;

[0039] 4. By arranging the TPU film, the shape of the inner cavity of the glue channel is changed by using the heat deformation and shape change characteristics of the TPU film, and combined with the interference condition of the TPU film with the edge of the through hole when it deforms, an included angle area is formed, so that part of the sealing glue is transferred to the vicinity of the glue blocking side wall, so that this part of the sealing glue is in full and gentle contact and adhesion with the glue blocking side wall and the nano calcium carbonate powder first, to form a stable glue blocking wall structure, so as to reduce the overflow after the subsequent sealing glue completely fills the glue channel. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a schematic view of the whole frame of the sunroof of Example 1.

[0041] Figure 2is an exploded view of example 1 for embodying the position relationship of the first connecting member and the second connecting member.

[0042] Figure 3 is a partial enlarged view of example 1 for embodying the shape of the glue flow channel.

[0043] Figure 4 is a partial enlarged view of example 2 for embodying the shape of the glue blocking wall.

[0044] Figure 5 is a partial enlarged view of example 3 for embodying the shape of the glue blocking wall.

[0045] Figure 6 is a schematic view of a film pasting device of example 4.

[0046] Figure 7 is a structural schematic view of a die of example 4.

[0047] Figure 8 is a morphological change process diagram of a TPU film of example 4 under the action of a blowing and sucking air pipe.

[0048] Figure 9 is a sectional view along the width direction of the die of example 5.

[0049] Figure 10 is a sectional view along the width direction of the die of example 6.

[0050] Explanation of reference signs: 1, glue flow channel; 3, die; 5, TPU film; 10, frame; 100, sealant; 101, first connecting member; 102, through opening; 11, glue blocking wall; 111, first wavy wall; 112, second wavy wall; 113, containing area; 114, through gap; 115, through notch; 116, X-shaped plastic part; 12, glue pool; 13, bending part; 14, glue overflow pool; 15, air exhaust side; 20, guide rail; 201, second connecting member; 202, glue injection hole; 21, first lifting structure; 22, second lifting structure; 23, winding roller; 24, unwinding roller; 25, support plate; 31, rubber ring; 32, blowing and sucking air pipe; 33, support air pipe; 34, suction cup; 35, sliding pipe; 36, spring; 37, cam; 38, driving motor; 39, gear; 391, rack; 51, easy-to-tear line; 52, plugging part. DETAILED DESCRIPTION

[0051] The following will be described in detail below with reference to the accompanying Figures 1-10 The present application is further described in detail.

[0052] Example 1 of the present application discloses a sunroof sealant glue leakage prevention channel structure

[0053] Reference is made to Figure 1 andFigure 2 The structure of the glue leakage preventing channel of the sunroof sealant comprises a guide rail 20, a frame 10 and a sealant 100. The frame 10 can be a front frame or a rear frame. The guide rail 20 and the frame 10 are overlapped on the upper and lower parts of the structure of the frame 10 and the guide rail 20. The overlapping part of the frame 10 is provided as a first connecting piece 101, and the overlapping part of the guide rail 20 is provided as a second connecting piece 201. The second connecting piece 201 is overlapped on the first connecting piece 101, and the two are fixedly connected by bolts.

[0054] As shown in the drawings, the upper surface of the first connecting piece 101 is provided with a glue channel groove 1, and the second connecting piece 201 is provided with a glue injection hole 202 for directly facing the glue channel groove 1. When the second connecting piece 201 is overlapped on the first connecting piece 101, the lower surface of the second connecting piece 201 blocks the upper groove of the glue channel groove 1, so as to facilitate the injection of the sealant 100 into the glue channel groove 1 through the glue injection hole 202. Figure 2 As shown in the drawings, the glue channel groove 1 can be a straight line, or can be adaptively adjusted according to the design shape of the frame 10. In the embodiment, the glue channel groove 1 comprises a straight part and a curved part 13, so as to adapt to the structural design of the frame 10. The length direction side of the glue channel groove 1 is communicated with the outside, which is an exhaust side 15. During the injection of the sealant 100 into the glue channel groove 1, the air in the glue channel groove 1 can be exhausted.

[0055] Figure 3 In order to improve the alignment easiness of the glue injection hole 202, the middle part of the glue channel groove 1 is integrally formed with a circular glue pool 12. The glue pool 12 is directly opposite to the glue injection hole 202, and the diameter of the glue pool 12 is greater than the width of the glue channel groove 1.

[0056] The groove edge of the glue channel groove 1 is provided with a glue blocking wall 11, that is, the glue channel groove 1 is integrally formed with the glue blocking wall 11. The glue blocking wall 11 extends along the length direction of the glue channel groove 1. In the embodiment, the glue blocking wall 11 is linear. The height of the glue blocking wall 11 is 0.4-0.55MM, and the thickness of the glue blocking wall 11 is 0.25-0.35MM. That is, the glue blocking wall 11 is relatively thin, so as to be crushed in the subsequent process.

[0057] The groove edge of the glue channel groove 1 is provided with a glue blocking wall 11, that is, the glue channel groove 1 is integrally formed with the glue blocking wall 11. The glue blocking wall 11 extends along the length direction of the glue channel groove 1. In the embodiment, the glue blocking wall 11 is linear. The height of the glue blocking wall 11 is 0.4-0.55MM, and the thickness of the glue blocking wall 11 is 0.25-0.35MM. That is, the glue blocking wall 11 is relatively thin, so as to be crushed in the subsequent process.

[0058] ​And, when the sealant 100 flows to the curved portion 13, the impact force of the sealant 100 is applied to the glue-blocking side wall 11 outside the curved portion 13, and it is easy to overflow from the broken gap of the glue-blocking side wall 11, so the following arrangement is made, the upper surface of the first connecting piece 101 is provided with a glue overflow pool 14, the glue overflow pool 14 extends along the length of the glue flow channel 1 for a distance, and the glue overflow pool 14 is located on the outside of the curved portion 13 of the glue flow channel 1, that is, the sealant 100 overflowing from the broken gap of the glue-blocking side wall 11 can flow into the glue overflow pool 14, so as to control the overflow of the sealant 100 within a certain range, and after the sealant 100 solidifies in the glue overflow pool 14, it forms a certain blocking effect to reduce the further overflow or outflow of the sealant 100.

[0059] Embodiment 1 also discloses an injection molding method of a sunroof sealant leak-proof glue channel structure, comprising the following steps: fixing the position of the frame 10 with a clamp, overlapping the second connecting piece 201 on the first connecting piece 101, and fixing the guide rail 20 on the frame 10 by bolts, in the process of tightening the bolts, the lower surface of the second connecting piece 201 extrudes the glue-blocking side wall 11 downward, and the glue-blocking side wall 11 plastically deforms adaptively, that is, the originally formed glue-blocking side wall 11 is crushed to form a glue-blocking structure, that is, the glue-blocking side wall 11 will form a certain profiling effect between the first connecting piece 101 and the second connecting piece 201 to block the overlapping gap, thereby reducing the influence of the tolerance of the plastic material frame 10 and the guide rail 20.

[0060] Then, the glue gun of the glue injection machine injects the heated sealant 100 into the glue flow channel 1 through the glue injection hole 202, the heating temperature of the sealant 100 can be 100-120 degrees, the sealant 100 gradually fills the glue flow channel 1, and the sealant 100 forms a leak-proof glue channel structure after solidification.

[0061] Embodiment 2

[0062] The difference between Embodiment 2 and Embodiment 1 is that, as shown in Figure 4 The glue-blocking side wall 11 comprises a first wave-shaped side wall 111 and a second wave-shaped side wall 112, both of which are integrally connected with the groove edge of the glue flow channel 1, and both of which extend along the length direction of the glue flow channel 1.

[0063] The heights of the first wave-shaped side wall 111 and the second wave-shaped side wall 112 are flush, and in this embodiment, the heights of the first wave-shaped side wall 111 and the second wave-shaped side wall 112 are both 0.4-0.55MM, and the thicknesses of the first wave-shaped side wall 111 and the second wave-shaped side wall 112 are both 0.1-0.15MM.

[0064] The first wavy side wall 111 is arranged close to the glue channel 1 relative to the second wavy side wall 112, the trough of the first wavy side wall 111 and the peak of the second wavy side wall 112 are arranged opposite along the width direction of the glue channel 1, the gap between the trough of the first wavy side wall 111 and the peak of the second wavy side wall 112 forms an oval containing area 113, and the gap 114 between the peak of the first wavy side wall 111 and the trough of the second wavy side wall 112 forms a space in the shape of a gourd between the first wavy side wall 111 and the second wavy side wall 112.

[0065] The trough of the first wavy side wall 111 is provided with a through gap 115 which penetrates to the upper surface of the first connecting piece 101 along the height direction of the first wavy side wall 111.

[0066] The containing area 113 and the through gap 114 are both filled with nano calcium carbonate powder, and the filling height of the nano calcium carbonate powder is lower than the upper opening height of the containing area 113; the specific filling method can be to ensure that the containing area 113 and the through gap 114 of the first wavy side wall 111 and the second wavy side wall 112 are open upwards, then sprinkle nano calcium carbonate powder to the edge of the glue channel 1, then use a brush to flatten the nano calcium carbonate powder in the containing area 113 and the through gap 114 to ensure that the filling height is as uniform as possible, and then use a dust suction pipe to suck up the nano calcium carbonate powder accidentally spilled outside the containing area 113 and the through gap 114.

[0067] The implementation principle of the embodiment 2 is that: first, by setting the shape and position of the first wavy side wall 111 and the second wavy side wall 112, the area available for the second connecting piece 201 to press on the first wavy side wall 111 and the second wavy side wall 112 is larger, so when the second connecting piece 201 is pressed on the first wavy side wall 111 and the second wavy side wall 112, the first wavy side wall 111 and the second wavy side wall 112 will adaptively deform more uniformly, making the glue blocking structure more stable.

[0068] Secondly, since the nano calcium carbonate powder is fine and has a certain fluidity, when the second connecting piece 201 is pressed on the first wavy side wall 111 and the second wavy side wall 112, the nano calcium carbonate powder will fill into the broken gap of the first wavy side wall 111 and the second wavy side wall 112 to improve the blocking effect of the glue blocking structure, and the first wavy side wall 111 and the second wavy side wall 112 constrain the nano calcium carbonate to reduce the excessive diffusion of the nano calcium carbonate powder.

[0069] Finally, when the sealant 100 enters the containing area 113 through the broken gap of the first wavy wall 111 and through the gap 115 and through the gap 114, the sealant 100 gradually penetrates into the nano calcium carbonate powder and diffuses along the distribution of the nano calcium carbonate powder, and in combination with the shaping effect of the first wavy wall 111 and the second wavy wall 112, the first wavy wall 111, the second wavy wall 112, the nano calcium carbonate powder and the sealant 100 together form a stable barrier wall structure.

[0070] Example 3

[0071] Example 3 is different from Example 2 in that, as shown in Figure 5 , an X-shaped plastic piece 116 is placed in the containing area 113, and the X-shaped plastic piece 116 is vertically arranged, and the upper end of the X-shaped plastic piece 116 is higher than or equal to the height of the upper opening of the containing area 113.

[0072] The specific placement method is to first lay a first layer of nano calcium carbonate powder in the containing area 113 and through the gap 114, and the height of the first layer of nano calcium carbonate powder is lower than half the height of the containing area 113, then place the X-shaped plastic piece 116 in the containing area 113, at this time, the X-shaped plastic piece 116 is half-buried in the first layer of nano calcium carbonate powder, then continue to lay a second layer of nano calcium carbonate powder, and the overall height of the nano calcium carbonate powder is lower than the height of the containing area 113, and the X-shaped plastic piece 116 is mostly buried in the nano calcium carbonate powder.

[0073] When the second connecting piece 201 is overlapped on the first connecting piece 101, the lower surface of the second connecting piece 201 extrudes the upper end of the X-shaped plastic piece 116, and the X-shaped plastic piece 116 plastically deforms adaptively, at this time, the X-shaped plastic piece 116 pushes the nano calcium carbonate powder in the inner included angle on the left and right sides of the X-shaped plastic piece 116 to the two sides, so as to further fill the nano calcium carbonate powder into the through gap 114, thereby improving the uniformity of the filling of the nano calcium carbonate powder.

[0074] Example 4

[0075] Example 4 is different from Example 2 in that, as shown in Figure 6 , the groove bottom of the sealant flow groove 1 of the first connecting piece 101 is throughly arranged, and the groove bottom through opening of the sealant flow groove 1 is set as an opening 102. At the same time, the injection molding method of the leak-proof glue channel structure is also different, mainly using a film pasting device to assist the injection molding of the sealant 100, which is specifically as follows.

[0076] As shown in Figure 6 , Figure 7As shown, the film pasting device comprises a TPU film 5, a pay-off roll 24, a take-up roll 23, a first lifting structure 21, a second lifting structure 22, a die head 3 and a plurality of blowing and suction air pipes 32, wherein the first lifting structure 21 and the second lifting structure 22 are lifting cylinders, the TPU film 5 is horizontally arranged, the TPU film 5 is located directly below the first connecting piece 101, the two ends of the TPU film 5 are wound on the take-up roll 23 and the pay-off roll 24 respectively, the first lifting structure 21 is used to drive the take-up roll 23 and the pay-off roll 24 to jointly lift to control the height of the TPU film 5, and meanwhile the take-up roll 23 and the pay-off roll 24 are used to control the replacement of the TPU film 5.

[0077] As shown, Figure 6 As shown, the TPU film 5 is provided with a tear line 51 arranged around, the shape profile of the tear line 51 is adapted to the through opening 102, and the size of the tear line 51 is greater than the size of the through opening 102, the area enclosed by the tear line 51 is set as a plugging part 52, and the inner edge of the tear line 51 is provided with an adhesive (not shown in the figure).

[0078] As shown, Figure 7 As shown, the die head 3 is a shell structure, the die head 3 has an upper opening, the shape profile of the upper opening of the die head 3 is adapted to the shape of the through opening 102, the size of the upper opening of the die head 3 is smaller than the size of the tear line 51 and greater than the size of the through opening 102, and a circle of rubber rings 31 is fixed at the edge of the upper opening of the die head 3.

[0079] The die head 3 is located directly below the TPU film 5, the second lifting structure 22 is used to drive the die head 3 to lift, the die head 3 is provided with a plurality of blowing and suction air pipes 32, the blowing and suction air pipes 32 are arranged along the length direction of the through opening 102 at intervals, the blowing and suction air pipes 32 are vertically arranged, the air paths of the blowing and suction air pipes 32 are independent, and the blowing and suction air pipes 32 can respectively blow and suck air, and the blown air can be hot air, so as to directly heat or assist to heat the TPU film 5.

[0080] An injection molding method of a sunroof sealant leakage prevention glue channel structure, comprising the following steps: the second connecting piece 201 is overlapped on the first connecting piece 101, the guide rail 20 is fixed on the frame 10 by bolts, in the process of tightening the bolts, the lower surface of the second connecting piece 201 extrudes the first wavy side wall 111 and the second wavy side wall 112, the first wavy side wall 111 and the second wavy side wall 112 are plastically deformed to form a glue blocking structure, after the first wavy side wall 111 and the second wavy side wall 112 are plastically deformed, the first lifting structure 21 drives the take-up roll 23 and the pay-off roll 24 to jointly ascend, so that the TPU film 5 is close to the lower surface of the first connecting piece 101, then the second lifting structure 22 drives the die head 3 to ascend, the edge of the upper opening of the die head 3 tightly presses the upper surface of the plugging part 52 on the lower surface of the first connecting piece 101, and the adhesive pastes the plugging part 52 on the lower surface of the first connecting piece 101, at this time,Figure 8 As shown, the blocking part 52 fully blocks the through hole 102 under the action of the adhesive and the rubber ring 31.

[0081] Then, part of the sealant 100 is injected into the flow channel 1 through the injection hole 202, and the sealant 100 gradually enters the flow channel 1. The injection of the sealant 100 is stopped, and the glue gun remains in cooperation with the injection hole 202 to avoid the overflow of the sealant 100 from the injection hole 202. At this time, the heat of the sealant 100 in a molten state is transferred to the blocking part 52, the blocking part 52 softens, the blowing and suction pipe 32 injects gas into the cavity of the die 3, and the gas pressure is applied upward on the blocking part 52. The blocking part 52 deforms upward and adheres to the lower surface of the second connecting piece 201. It should be noted that the sequence of injecting gas into the cavity of the die 3 by the blowing and suction pipe 32 is: starting from the blowing and suction pipe 32 at the middle position of the die 3, and then sequentially injecting gas along the blowing and suction pipe 32 away from the middle position of the die 3, that is, the blocking part 52 deforms upward from the middle to both sides. The deformation of the blocking part 52 can gradually extrude the sealant 100 in the flow channel 1 to both sides of the length direction of the flow channel 1, so that the sealant 100 can flow more uniformly to each position of the flow channel 1.

[0082] At this time, due to the upward deformation of the blocking part 52 and the interference of the TPU film 5 when deforming with the edge of the through hole 102, an included angle region is formed between the edge of the blocking part 52 and the inner edge of the through hole 102, and the sealant 100 is extruded into the included angle region by the blocking part 52, that is, part of the sealant 100 is transferred to the vicinity of the glue blocking side wall 11, so that the part of the sealant 100 first contacts and bonds with the glue blocking side wall 11 and the nano calcium carbonate powder fully and gently to form a stable glue blocking wall structure, thereby reducing the overflow of the sealant 100 from this position after the flow channel 1 is completely filled with the sealant 100. After the sealant 100 in the included angle region is preliminarily solidified, that is, after 30-90 seconds from the start of injecting gas by the blowing and suction pipe 32, it is determined that the sealant 100 is preliminarily solidified.

[0083] Then, the blowing and suction pipe 32 sucks air from the cavity of the die 3, the cavity of the die 3 is under negative pressure, the blocking part 52 deforms downward, the volume of the flow channel 1 increases to provide space for the continuous injection of the subsequent sealant 100. The remaining sealant 100 is injected into the flow channel 1 through the injection hole 202, so that the flow channel 1 is filled with the sealant 100, and a leak-proof glue channel structure is formed after solidification.

[0084] And since the sealing part 52 is bonded with the sealant 100, the sealing part 52 is fixed with the first connecting part 101, then the winding roller 23, the unwinding roller 24 and the die head 3 are moved downward together, the easy-to-tear line 51 around the sealing part 52 is broken, thus the sealing part 52 is peeled off from the TPU film 5, finally the winding roller 23 and the unwinding roller 24 are rotated in cooperation to move the new sealing part 52 to the position directly below the next frame 10, the above-mentioned actions are repeated to complete the injection molding of multiple leakage-proof glue channels.

[0085] Embodiment 5

[0086] Embodiment 5 is different from Embodiment 4 in that, as shown in the figure, the film pasting device further comprises a vertical vibration structure, a plurality of sliding pipes 35 are fixed to the bottom of the die head 3, each sliding pipe 35 is arranged at intervals along the length direction of the through hole 102, a support air pipe 33 is vertically slidably connected in each sliding pipe 35, the upper end of the support air pipe 33 can extend into the inner cavity of the die head 3, the lower part of the support air pipe 33 can be externally connected with a suction hose (not shown in the figure), the upper end of the support air pipe 33 is provided with a suction disc 34, the suction port of the suction disc 34 is upwardly arranged, the size of the suction disc 34 is smaller than the width of the sealing part 52, specifically, the diameter of the suction disc 34 is two-thirds of the width of the sealing part 52. Figure 9

[0087] The vertical vibration structure is used to drive each support air pipe 33 to vibrate up and down, specifically, the vertical vibration structure comprises a driving motor 38, a cam 37 and a spring 36, the driving motor 38 is fixedly connected with the support plate 25 on the second lifting structure 22, the cam 37 is installed on the output shaft of the driving motor 38, the cam 37 is located directly below the support air pipe 33, wherein the spring 36 is located between the support air pipe 33 and the sliding pipe 35, the spring 36 is used to force the lower end of the support air pipe 33 to tightly abut against the outer surface of the cam 37.

[0088] In the process of injecting the remaining sealant 100 into the glue channel groove 1 through the glue injection hole 202, the support air pipe 33 sucks air, the suction disc 34 sucks the lower surface of the sealing part 52, the driving motor 38 drives the cam 37 to rotate, and drives the support air pipe 33 to vibrate up and down through the abutting force, so as to drive the softened sealing part 52 to vibrate up and down through the suction disc 34, so as to constantly change the volume of the glue channel groove 1, and the sealant 100 will flow to the place with small pressure, that is, the sealant 100 will flow to the length direction two sides of the glue channel groove 1, so as to accelerate the flow speed of the sealant 100 and expand the coverage area of the sealant 100.

[0089] ​Furthermore, during the vibration process, the height of the suction cup 34 is always higher than the lower surface of the first connector 101. After the sealant 100 has completely solidified, the solidified sealant 100 will be thicker on both sides and thinner in the middle on the cross section along the width direction of the adhesive channel 1. That is, the solidified sealant 100 near the adhesive blocking sidewall 11 is thicker, and the water seepage path is lengthened, thereby effectively improving the waterproof effect at this location.

[0090] Example 6

[0091] The difference between Example 6 and Example 5 is that, as Figure 10 As shown, the membrane application device also includes a reciprocating deflection structure. The supporting air tube 33 and the sliding tube 35 are rotatably connected around their own axis. The reciprocating deflection structure includes a gear 39, a rack 391 and an electric push rod. The gear 39 is coaxially fixed on the supporting air tube 33. The rack 391 is horizontally set and meshes with each gear 39 on the same straight line. The electric push rod is installed on the support plate 25 (not shown in the figure) and drives the rack 391 to move horizontally reciprocally.

[0092] During the vibration of the suction cup 34, the electric push rod is activated. Through the cooperation of the rack 391 and the gear 39, the support air tube 33 is driven to reciprocate at a small angle, thereby causing the part of the sealing part 52 that is sucked by the suction cup 34 to undergo torsional deformation. This increases the degree of deformation of the sealing part 52 itself, making it easier to deform and thus improving the ease of vibration of the suction cup 34.

[0093] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A leak-proof sealant channel structure for a skylight, characterized in that: The system includes a guide rail (20), a frame (10), and sealant (100). Parts of the guide rail (20) and frame (10) overlap vertically. The overlapping portion of the frame (10) is designated as a first connector (101), and the overlapping portion of the guide rail (20) is designated as a second connector (201). The upper surface of the first connector (101) is provided with a glue channel (1), and the second connector (201) has a glue injection hole (202) facing the glue channel (1). The glue channel (1) is used to fill sealant (100), and the groove edge of the glue channel (1) is convex. The structure has an adhesive-blocking sidewall (11) extending along the length of the adhesive channel (1); when the second connector (201) overlaps the first connector (101), the lower surface of the second connector (201) presses the adhesive-blocking sidewall (11), and the adhesive-blocking sidewall (11) undergoes adaptive plastic deformation to form an adhesive-blocking structure; the adhesive-blocking sidewall (11) is linear, with a height of 0.4-0.55 mm and a thickness of 0.25-0.35 mm, so as to facilitate crushing deformation and allow the sealant (100) to overflow from the broken gap of the adhesive-blocking sidewall (11).

2. The sunroof sealant leak-proof channel structure according to claim 1, characterized in that: The center of the glue channel (1) is integrally formed with a circular sol pool (12), which is positioned directly opposite the glue injection hole (202). The diameter of the sol pool (12) is greater than the width of the glue channel (1).

3. The sunroof sealant leak-proof channel structure according to claim 1, characterized in that: The glue channel (1) has a curved portion (13), and an overflow pool (14) is provided on the upper surface of the first connector (101). The overflow pool (14) extends along the length of the glue channel (1) and is located on the outer side of the curved portion (13) of the glue channel (1).

4. The sunroof sealant leak-proof channel structure according to claim 1, characterized in that: The adhesive barrier sidewall (11) includes a first wavy sidewall (111) and a second wavy sidewall (112). The first wavy sidewall (111) is positioned close to the adhesive channel (1) relative to the second wavy sidewall (112). The trough of the first wavy sidewall (111) and the crest of the second wavy sidewall (112) are positioned opposite each other along the width direction of the adhesive channel (1). The gap between the trough of the first wavy sidewall (111) and the crest of the second wavy sidewall (112) forms an elliptical receiving area (113). A passage gap (114) is formed between the crest of the first wavy sidewall (111) and the trough of the second wavy sidewall (112). The heights of the first wavy sidewall (111) and the second wavy sidewall (112) are flush.

5. The sunroof sealant leak-proof channel structure according to claim 4, characterized in that: Both the receiving area (113) and the passage gap (114) are filled with nano-calcium carbonate powder. The filling height of the nano-calcium carbonate powder is lower than the upper opening height of the receiving area (113). A passage gap (115) is provided at the trough of the first wavy sidewall (111). When the sealant (100) enters the receiving area (113) and the passage gap (114) through the crushed gap of the first wavy sidewall (111) and the passage gap (115), the sealant (100) adheres to the nano-calcium carbonate powder.

6. The sunroof sealant leak-proof channel structure according to claim 5, characterized in that: An X-shaped plastic part (116) is placed in the receiving area (113). The X-shaped plastic part (116) is embedded in the nano-calcium carbonate powder. The upper end of the X-shaped plastic part (116) is higher than or equal to the upper opening height of the receiving area (113). When the second connector (201) overlaps the first connector (101), the lower surface of the second connector (201) presses the upper end of the X-shaped plastic part (116), and the X-shaped plastic part (116) undergoes adaptive plastic deformation.

7. An injection molding method for a sunroof sealant leak-proof adhesive channel structure according to any one of claims 1-3, characterized in that: Includes the following steps: The second connector (201) is overlapped on the first connector (101), and the guide rail (20) is fixed to the frame (10) by bolts. During the tightening of the bolts, the lower surface of the second connector (201) presses the adhesive-blocking sidewall (11), and the adhesive-blocking sidewall (11) undergoes adaptive plastic deformation to form an adhesive-blocking structure. Sealant (100) is injected into the adhesive channel (1) through the injection hole (202), and the sealant (100) gradually fills the adhesive channel (1). After curing, an anti-leakage adhesive channel structure is formed.

8. An injection molding method for a sunroof sealant leak-proof channel structure according to any one of claims 4-5, characterized in that: Includes the following steps: The bottom of the adhesive channel (1) of the first connector (101) is provided through, and the through opening of the bottom of the adhesive channel (1) is set as a through opening (102); the second connector (201) is overlapped on the first connector (101), and the guide rail (20) is fixed to the frame (10) by bolts. During the tightening of the bolts, the lower surface of the second connector (201) presses the first wavy sidewall (111) and the second wavy sidewall (112), and the first wavy sidewall (111) and the second wavy sidewall (112) undergo adaptive plastic deformation to form an adhesive-resistant structure; then the sealant is applied using a film-applying device. The auxiliary injection molding of (100) includes a TPU film (5), an unwinding roller (24), a take-up roller (23), a first lifting structure (21), a second lifting structure (22), a die head (3), and multiple blow-suction pipes (32). The TPU film (5) is located directly below the first connector (101). The two ends of the TPU film (5) are respectively wound around the take-up roller (23) and the unwinding roller (24). The first lifting structure (21) is used to drive the take-up roller (23) and the unwinding roller (24) to rise and fall together. The TPU film (5) is provided with an enclosed easy-tear line (51). The shape and outline of the easy-tear line (51) are adapted to the opening (102). Furthermore, the size of the tear line (51) is larger than the size of the opening (102), and adhesive is provided at the inner edge of the tear line (51). The area enclosed by the tear line (51) is designated as a sealing part (52). The mold head (3) is a shell structure with an upper opening. The shape and contour of the upper opening of the mold head (3) are adapted to the opening (102). The size of the upper opening of the mold head (3) is smaller than the size of the tear line (51) and larger than the size of the opening (102). A rubber ring (31) is provided at the edge of the upper opening of the mold head (3). The mold head (3) is located directly below the TPU film (5). The second lifting structure (22) is used to drive the mold head (3) to lift. The mold head (3) is provided with Multiple air blowing and suction pipes (32) are arranged at intervals along the length of the opening (102); after the first wave sidewall (111) and the second wave sidewall (112) undergo adaptive plastic deformation, the first lifting structure (21) drives the take-up roller (23) and the unwind roller (24) to rise together, so that the TPU film (5) is close to the lower surface of the first connector (101), the second lifting structure (22) drives the die head (3) to rise, and the edge of the opening on the die head (3) tightly presses the upper surface of the sealing part (52) against the lower surface of the first connector (101), and the adhesive glue adheres the sealing part (52) to the lower surface of the first connector (101);A portion of sealant (100) is injected into the flow channel (1) through the injection hole (202). The sealant (100) gradually enters the flow channel (1). The injection of sealant (100) is stopped. The heat of the molten sealant (100) is transferred to the sealing part (52), and the sealing part (52) softens. Air is injected into the inner cavity of the mold head (3) through the air blowing pipe (32). The gas pressure is applied upward to the sealing part (52). The sealing part (52) deforms upward and fits against the lower surface of the second connector (201). The edge of the sealing part (52) forms an angled area with the inner edge of the opening (102). The sealant (100) is squeezed into the angled area by the sealing part (52). After the sealant (100) in the area has initially solidified, the air suction pipe (32) sucks air into the cavity of the mold head (3), creating a negative pressure inside the mold head (3). The sealing part (52) deforms downward to provide space for the continuous injection of subsequent sealant (100). Then, the remaining sealant (100) is injected into the flow channel (1) through the injection hole (202), so that the sealant (100) fills the flow channel (1). After curing, a leak-proof channel structure is formed. The sealing part (52) is bonded to the sealant (100). The take-up roller (23), the unwind roller (24), and the mold head (3) are moved down together, the tear line (51) breaks, and the sealing part (52) peels off from the TPU film (5).

9. The injection molding method for the sunroof sealant leak-proof channel structure according to claim 8, characterized in that: The order in which the air is injected into the cavity of the mold head (3) through the air-blowing pipe (32) is as follows: air is injected starting from the air-blowing pipe (32) in the middle position of the mold head (3), and air is injected sequentially along the air-blowing pipe (32) that is away from the middle position of the mold head (3).

10. The injection molding method for the sunroof sealant leak-proof channel structure according to claim 8, characterized in that: The membrane application device also includes a vertical vibration structure. The mold head (3) is vertically slidably connected to multiple support air tubes (33). Each support air tube (33) is arranged at intervals along the length of the opening (102). The upper end of the support air tube (33) is provided with a suction cup (34). The size of the suction cup (34) is smaller than the width of the sealing part (52). The vertical vibration structure is used to drive each support air tube (33) to vibrate up and down. During the process of injecting the remaining sealant (100) into the glue channel (1) through the glue injection hole (202), the suction cup (34) sucks on the lower surface of the sealing part (52). The vertical vibration structure drives the sealing part (52) to vibrate up and down through the support air tubes (33) and the suction cup (34) in sequence, so as to accelerate the flow speed of the sealant (100) and expand the coverage area of ​​the sealant (100). During the vibration process, the height of the suction cup (34) is always higher than the lower surface of the first connector (101).

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