A worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of a car

Abstract

The present invention is an injection mold for an internal worm of an automatic control system for opening and closing a metal tube of a rear tailgate of an automobile, comprising a movable mold and a fixed mold. A movable mold seat is provided on the top of the movable mold, and is fixedly connected to the movable mold plate of an injection molding device through the movable mold seat. A fixed mold seat is provided on the bottom of the fixed mold, and is fixedly connected to the fixed mold plate of an injection molding machine through the fixed mold seat. The invention is characterized in that a screw core adjustment mechanism, a screw core in-and-out mechanism, a metal tube positioning mechanism, a metal tube loading and unloading mechanism, and a metal tube adjustment mechanism are sequentially provided on the fixed mold from left to right. The movable mold is located above the screw core adjustment mechanism, the screw core in-and-out mechanism, and the metal tube positioning mechanism. A glue injection mechanism and a metal tube clamping mechanism are respectively provided on the movable mold. The present invention can injection mold four internal worms of metal tubes at one time, and has high molding efficiency; the loading and unloading operation of the metal tubes is simple, saving time and effort; the positions of the metal tubes and the screw cores are adjustable, ensuring that the ends are aligned, and the molding quality is good.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to an injection mold for a worm in an automatic control system for an opening and closing metal tube of a rear tailgate of an automobile. Background Art

[0002] The metal tube automatic control system for the opening and closing of the tailgate is a system integrated at the rear of the vehicle for automatically controlling the opening and closing of the tailgate. The metal tube, inner worm and other components in the system are key mechanical components for realizing the automatic opening and closing function of the tailgate. At present, in order to enhance the structural stability and durability of the metal tube automatic control system for the opening and closing of the tailgate, the inner worm is injection molded at the end of the metal tube. The combination of plastic and metal enhances the rigidity and impact resistance of the entire system, reduces the need for subsequent assembly, and simplifies the production process.

[0003] During injection molding, the currently used injection molds are relatively time-consuming and labor-intensive to load and unload metal tubes, and are inconvenient to use. At the same time, due to the production tolerance of metal tubes, the length of each metal tube cannot be guaranteed to be completely consistent, and the position adjustment accuracy of the screw mold core is average. During injection molding, glue overflow is inevitable at the end of the metal tube, and subsequent processing is required. The molding quality is average and the production efficiency is low. Summary of the invention

[0004] The invention aims to solve the deficiencies of the prior art and provides a worm injection mold for an automatic control system for opening and closing a metal tube of a rear tailgate of an automobile.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a worm injection mold for an automatic control system for opening and closing a metal tube of a rear tailgate of an automobile, comprising a movable mold and a fixed mold, a movable mold seat is provided on the top of the movable mold, and is fixedly connected to the movable mold plate of an injection molding device through the movable mold seat, a fixed mold seat is provided on the bottom of the fixed mold, and is fixedly connected to the fixed mold plate of the injection molding machine through the fixed mold seat, characterized in that a screw mold core adjustment mechanism, a screw mold core in-and-out mechanism, a metal tube positioning mechanism, a metal tube loading and unloading mechanism, and a metal tube adjustment mechanism are sequentially provided on the fixed mold from left to right, the movable mold is located above the screw mold core adjustment mechanism, the screw mold core in-and-out mechanism, and the metal tube positioning mechanism, and a glue injection mechanism and a metal tube pressing mechanism are respectively provided on the movable mold;

[0006] The metal pipe loading and unloading mechanism comprises a pair of through holes, and a loading and unloading seat is rotatably connected to the through holes through a rotating shaft, and the front and rear side walls of the fixed mold are respectively provided with a first power mechanism that drives the corresponding loading and unloading seat to rotate, and a first fixed block is provided on the top of the loading and unloading seat near the front and rear sides of one end of the metal pipe adjusting mechanism, and a first push block is slidably provided between the opposite surfaces of the two first fixed blocks, and a second fixed block is respectively provided on the top of the loading and unloading seat away from the front and rear sides and the middle of one end of the metal pipe adjusting mechanism, and a second push block is slidably provided between the opposite surfaces of the two adjacent second fixed blocks; an inner sleeve rod runs through the second push block, and a clamping block is provided at one end of the inner sleeve rod, and a clamping groove corresponding to the clamping block is provided on the first push block, and the clamping block is clamped on the clamping groove, and a first spring is sleeved on the inner sleeve rod, and the first spring is located between the first push block and the second push block, and a positioning protrusion is provided at one end of the second push block away from the first push block, and the metal pipe is positioned on the positioning protrusion through the notch clamping sleeve at the end, and the top of the second push block is fixed with a limited block by a bolt, and the bottom of the limit block away from one end of the second push block is clamped in the clamping groove;

[0007] The metal pipe adjustment mechanism includes a pair of first oil cylinders, the first oil cylinder is fixed at the top of the fixed mold near one end of the metal pipe loading and unloading mechanism, the piston rod end of the first oil cylinder is fixedly connected to a third push block, the front and rear sides and the middle of the top of the fixed mold are fixedly connected to the third fixed block, the front and rear sides of the bottom of the third push block are fixedly connected to the fourth push block, the third push block and the fourth push block slide along the opposite surfaces of two adjacent third fixed blocks, the front and rear side walls of the loading and unloading seat are provided with push grooves corresponding to the fourth push block, and the fourth push block is slidably inserted into the push grooves;

[0008] The screw mold core entry and exit mechanism includes two groups of first fixed boxes, second fixed boxes, and third fixed boxes arranged on the front and rear sides of the top of the fixed mold. The first fixed box, the second fixed box, and the third fixed box are connected in sequence from left to right. Two internal threaded sleeves are slidably provided inside the first fixed box. A first gear hole and two second gear holes connected to the first gear hole are provided in the third fixed box adjacent to a side of the second fixed box. A first gear is rotatably connected in the first gear hole, and a second gear meshing with the first gear is provided in the second gear hole. A threaded rod threadedly connected to the internal threaded sleeve is fixedly connected to the axial rod of the second gear near one end of the second fixed box, and a positioning sleeve is provided on the other end and a screw mold core is fixedly provided at the end. The positioning sleeve is penetrated and fixed in the third fixed box, the screw mold core penetrates into the metal tube and the end abuts against the inner sleeve rod, and the metal tube abuts against the positioning sleeve at one end near the screw mold core. A second power mechanism for driving the first gear to rotate is provided on the fixed mold;

[0009] The metal tube positioning mechanism includes a pair of positioning seats, the two positioning seats are arranged on the front and rear sides of the top of the fixed mold, and the positioning seats correspond to the loading and unloading seats one by one. The top of the positioning seat is provided with two first positioning grooves corresponding to the metal tubes, and the metal tubes are placed in the first positioning grooves. The top of the positioning seat is close to one end of the third fixing box and is provided with two second positioning grooves matching the positioning sleeves, and the ends of the positioning sleeves are abutted in the second positioning grooves;

[0010] The screw die core adjustment mechanism includes two adjustment seats arranged on the top of the fixed die, the adjustment seats are closely arranged with the first fixed box, two first grooves corresponding to the threaded rods are arranged on the adjustment seats, wedge-shaped adjustment grooves are arranged on the front and rear sides of the first grooves, a wedge-shaped adjustment block is inserted in the adjustment groove for sliding up and down, an adjustment bolt is threadedly connected on the adjustment block, and the adjustment bolt is threadedly connected in the adjustment groove, and the adjustment block is in contact with the internal thread sleeve;

[0011] The movable mold is driven by the movable mold plate to close the mold with the fixed mold, and the metal tube is pressed by the metal tube pressing mechanism. The gap between the positioning sleeve, the screw mold core, the metal tube and the inner sleeve rod is the inner worm cavity to be injected, and the injection mechanism is connected to the inner worm cavity.

[0012] In particular, the first power mechanism includes a second oil cylinder respectively fixed on the front and rear side walls of the fixed mold near one end of the metal tube adjustment mechanism, the end of the second oil cylinder piston rod is fixedly connected to a connecting block, the connecting block is fixedly connected to the first rack, the front and rear side walls of the fixed mold are provided with a slide groove, a rack slide corresponding to the first rack is fixedly connected in the slide groove, the first rack is slidably arranged in the rack slide, a slot corresponding to the rack slide is provided on the top of the fixed mold, the slot is connected to the slide groove, and a rotating shaft on the loading and unloading seat extends into the slot close to one end of the first rack and is fixedly connected to a third gear meshing with the first rack.

[0013] In particular, the second power mechanism includes a third oil cylinder fixed on the front side of the fixed mold, a movable plate is fixedly connected to the end of the piston rod of the third oil cylinder, a rack connecting plate is fixedly connected to the end of the movable plate, the rack connecting plate is slidably arranged in the fixed mold, and two second racks corresponding to the second fixed box are fixedly connected to the front and rear sides of the top of the rack connecting plate, the second rack is located at the bottom of the second fixed box, and the bottom of the second fixed box is opened and located at the bottom of the second fixed box, and a fourth gear is fixedly provided on the side of the first gear close to the second fixed box and penetrates into the second fixed box, and the fourth gear is meshed with the corresponding second rack.

[0014] Particularly, limiting rods are clamped on the front and rear sides of the internal thread sleeve, and the limiting rods on the internal thread sleeve slide along the upper and lower inner walls of the first fixing box.

[0015] In particular, the metal tube clamping mechanism includes a plurality of clamping seats corresponding to the metal tubes, the bottom of the clamping seat is opened and fixed to the bottom of the movable mold by bolts, a clamping block is provided inside the clamping seat for sliding up and down, a pair of second springs is provided on the top of the clamping block, the top of the second spring is connected to the movable mold, an arc groove is provided on the bottom of the clamping seat and the clamping block, and the metal tube is clamped and fixed by the arc groove at the bottom of the clamping block.

[0016] In particular, the glue injection mechanism includes a glue inlet main cup and a glue inlet sub-cup, the glue inlet main cup and the glue inlet sub-cup are respectively arranged on the movable mold seat and the movable mold, and each glue inlet sub-cup is located directly above the position to be cast of each metal tube, the glue inlet main cup and the glue inlet sub-cup are connected by a diverter pipe, a glue injection head is arranged at the bottom of the glue inlet sub-cup, a cover box corresponding to the positioning seat is arranged in the movable mold, the cover box is plugged into the positioning seat, a third positioning groove corresponding to the second positioning groove is arranged at the bottom of the cover box, the upper part of the positioning sleeve abuts against the third positioning groove, a glue injection seat corresponding to the glue injection point is arranged at the bottom of the cover box, and the glue injection head is inserted into the cover box and placed on the glue injection seat, and the glue outlet of the glue injection head is connected to the glue injection point of the metal tube.

[0017] Particularly, a plurality of guide sleeves are embedded in the top edge of the fixed mold, a plurality of guide rods corresponding to the guide sleeves are arranged on the movable mold, and the guide rods are inserted into the guide sleeves.

[0018] In particular, cooling water pipes are laid inside the movable mold, the fixed mold, the cover box and the positioning seat, and the cooling water pipes are connected to external water cooling equipment.

[0019] The beneficial effects of the present invention are as follows: by arranging a metal tube loading and unloading mechanism, the present invention makes the loading and unloading of the metal tube simple and easy, saves time and effort, has high loading and unloading efficiency, and can form four inner worm gears at one time, with high production efficiency; by arranging a metal tube adjusting mechanism, a screw mold core entry and exit mechanism, and a screw mold core adjusting mechanism, the screw mold core is convenient to enter and exit, and the positions of the metal tube and the screw mold core can be further adjusted, the ends of the metal tube and the screw mold core can be kept flush, effectively avoiding glue overflow, and the inner worm gear molding quality is good; by arranging a metal tube clamping mechanism, the metal tube can be further fixed after the mold is closed to avoid movement; the entire injection molding process of the present invention can basically be automated, and has good molding quality, is easy to use, and has high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the connection between the injection mold of the present invention and the movable platen and fixed platen of the injection molding machine;

[0021] Figure 2 It is a schematic diagram of the structure of the injection mold of the present invention;

[0022] Figure 3 It is a front view of the injection mold of the present invention;

[0023] Figure 4 It is a schematic diagram of the fixed mold structure of the present invention;

[0024] Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle;

[0025] Figure 6 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0026] Figure 7 for Figure 4 a top view of the structure shown;

[0027] Figure 8 for Figure 7 Middle CC section view;

[0028] Fig. 9 A top view of the injection mold of the present invention;

[0029] Fig.10 for Fig. 9 Middle DD section view;

[0030] Fig.11 for Fig. 9 Middle EE section view;

[0031] Fig.12 for Fig.10 The enlarged schematic diagram at F in the middle;

[0032] Fig.13 It is a schematic diagram of the second power structure of the present invention;

[0033] Fig.14 for Fig.13 The enlarged schematic diagram of G in the middle;

[0034] Fig.15 for Fig.13 The enlarged schematic diagram at H in the middle;

[0035] Fig.16 It is a schematic diagram of the position of the second positioning groove of the present invention;

[0036] Fig.17 for Fig.16 The enlarged schematic diagram at I in the middle;

[0037] Fig.18 for Fig.16 The enlarged schematic diagram of K in the middle;

[0038] In the figure: 1-moving mold;

[0039] 11- glue injection mechanism; 1101- glue inlet main cup; 1102- glue inlet sub-cup; 1103- glue injection head; 1104- cover box; 1105- third positioning groove; 1106- glue injection seat;

[0040] 12-metal pipe clamping mechanism; 1201-compression seat; 1202-compression block; 1203-second spring; 1204-arc groove;

[0041] 2-Fixed mold;

[0042] 21-screw core adjustment mechanism; 2101-adjustment seat; 2102-first groove; 2103-adjustment slot; 2104-adjustment block;

[0043] 22-screw core in and out mechanism; 2201-first fixed box; 2202-second fixed box; 2203-third fixed box; 2204-internal thread sleeve; 2205-first gear hole; 2206-second gear hole; 2207-first gear; 2208-second gear; 2209-threaded rod; 2210-positioning sleeve; 2211-screw core; 2212-third oil cylinder; 2213-moving plate; 2214-rack connecting plate; 2215-second rack; 2216-fourth gear; 2217-limiting rod;

[0044] 23-metal pipe positioning mechanism; 2301-positioning seat; 2302-first positioning groove; 2303-second positioning groove;

[0045] 24-Metal pipe loading and unloading mechanism; 2401-Through hole; 2402-Loading and unloading seat; 2403-First fixed block; 2404-First push block; 2405-Second fixed block; 2406-Second push block; 2407-Inner sleeve rod; 2408-Card block; 2409-Card slot; 2410-First spring; 2411-Location convex block; 2412-Limiting block; 2413-Second oil cylinder; 2414-Connecting block; 2415-First rack; 2416-Slide slot; 2417-Rack slide seat; 2418-Slot; 2419-Third gear;

[0046] 25-metal pipe adjustment mechanism; 2501-first oil cylinder; 2502-third push block; 2503-third fixed block; 2504-fourth push block; 2505-push slot;

[0047] 3-fixed mold; 4-movable mold plate; 5-fixed mold base; 6-fixed mold plate; 7-metal pipe; 8-guide sleeve;

[0048] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with embodiments:

[0050] like Figure 1-Figure 18As shown, a worm injection mold for an automatic control system for opening and closing a metal tube of a rear tailgate of an automobile comprises a movable mold 1 and a fixed mold 2. A movable mold seat 3 is provided on the top of the movable mold 1, and is fixedly connected to a movable mold plate 4 of an injection molding device through the movable mold seat 3. A fixed mold seat 5 is provided on the bottom of the fixed mold 2, and is fixedly connected to a fixed mold plate 6 of an injection molding machine through the fixed mold seat 5. The invention is characterized in that a screw mold core adjustment mechanism 21, a screw mold core entry and exit mechanism 22, a metal tube positioning mechanism 23, a metal tube loading and unloading mechanism 24, and a metal tube adjustment mechanism 25 are provided on the fixed mold 2 in sequence from left to right. The movable mold 1 is located above the screw mold core adjustment mechanism 21, the screw mold core entry and exit mechanism 22, and the metal tube positioning mechanism 23. A glue injection mechanism 11 and a metal tube clamping mechanism 12 are provided on the movable mold 1, respectively.

[0051] like Figure 4 , Figure 5 As shown, the metal tube loading and unloading mechanism 24 includes a pair of through holes 2401, and a loading and unloading seat 2402 is rotatably connected in the through holes 2401 through a rotating shaft. The front and rear side walls of the fixed mold 2 are respectively provided with a first power mechanism that drives the corresponding loading and unloading seat 2402 to rotate. The top of the loading and unloading seat 2402 is close to the front and rear sides of one end of the metal tube adjustment mechanism 25. A first push block 2404 is slidably arranged between the opposite surfaces of the two first fixed blocks 2403. Second fixed blocks 2405 are respectively arranged on the front and rear sides and in the middle of the top of the loading and unloading seat 2402 away from the metal tube adjustment mechanism 25. A second push block 2406 is slidably arranged between the opposite surfaces of two adjacent second fixed blocks 2405, and an inner sleeve is passed through the second push block 2406. Rod 2407, a clamping block 2408 is provided at one end of the inner sleeve rod 2407, a clamping groove 2409 corresponding to the clamping block 2408 is provided on the first push block 2404, the clamping block 2408 is clamped on the clamping groove 2409, and a first spring 2410 is sleeved on the inner sleeve rod 2407, the first spring 2410 is located between the first push block 2404 and the second push block 2406, a positioning protrusion 2411 is provided at one end of the second push block 2406 away from the first push block 2404, and the metal tube 7 is positioned on the positioning protrusion 2411 through a notch clamp at the end, a limiting block 2412 is fixed to the top of the second push block 2406 by bolts, and the bottom of the limiting block 2412 away from the second push block 2406 is clamped into the clamping groove 2409;

[0052] like Figure 3 , Figure 4As shown, the first power mechanism includes a second oil cylinder 2413 respectively fixed on the front and rear side walls of the fixed mold 2 near one end of the metal tube adjustment mechanism 25, the end of the piston rod of the second oil cylinder 2413 is fixedly connected to a connecting block 2414, and the connecting block 2414 is fixedly connected to a first rack 2415, and the front and rear side walls of the fixed mold 2 are provided with a slide groove 2416, and a rack slide 2417 corresponding to the first rack 2415 is fixedly connected in the slide groove 2416, and the first rack 2415 is slidably arranged in the rack slide 2417, and a slot 2418 corresponding to the rack slide 2417 is provided on the top of the fixed mold 2, and the slot 2418 is connected to the slot 2416, and the rotating shaft on the loading and unloading seat 2402 extends into the slot 2418 close to one end of the first rack 2415 and is fixedly connected to a third gear 2419 meshing with the first rack 2415;

[0053] Specifically, when loading and unloading the metal tube 7, the second oil cylinder 2413 drives the first rack 2415 to move, and then drives the third gear 2419 to rotate. At this time, the loading and unloading seat 2402 rotates, and each time the third gear 2419 rotates 90 degrees, when the loading and unloading seat 2402 is rotated to vertical, the metal tube 7 is sleeved on the inner sleeve rod 2407 and positioned on the positioning protrusion 2411 through the recess, and then the loading and unloading seat 2402 is turned to horizontal to place the metal tube 7 on the fixed mold 2. The setting of the recess and the positioning protrusion 2411 can ensure that the position of the glue injection point is consistent, and the loading and unloading operation of the metal tube 7 is convenient and easy to use.

[0054] like Figure 4 As shown, the metal tube adjustment mechanism 25 includes a pair of first oil cylinders 2501, the first oil cylinder 2501 is fixed at the top of the fixed mold 2 near one end of the metal tube loading and unloading mechanism 24, the piston rod end of the first oil cylinder 2501 is fixedly connected with a third push block 2502, the front and rear sides and the middle of the top of the fixed mold 2 are fixedly connected with a third fixed block 2503, the front and rear sides of the bottom of the third push block 2502 are fixedly connected with a fourth push block 2504, the third push block 2502 and the fourth push block 2504 slide along the opposite surfaces of two adjacent third fixed blocks 2503, the front and rear side walls of the loading and unloading seat 2402 are provided with a push groove 2505 corresponding to the fourth push block 2504, and the fourth push block 2504 is slidably inserted into the push groove 2505;

[0055] Specifically, after the metal tube 7 is installed, since there is still a certain difference in the length of the metal tube 7 within the tolerance range, in order to ensure that the front end of the metal tube 7 abuts against the positioning sleeve 2210 and avoid glue overflow at the front end of the metal tube 7 during glue injection, the first oil cylinder 2501 pushes the third push block 2502 to move, and the third push block 2502 drives the fourth push block 2504 to move in the push groove 2505, thereby pushing the first push block 2404 to move, and the first push block 2404 applies pressure to the first spring 2410, and the first spring 2410 pushes the second push block 2406, thereby driving the metal tube 7 and the inner sleeve rod 2407 to move forward until the front end of the metal tube 7 abuts against the positioning sleeve 2210.

[0056] like Figure 4 , Figure 7 , Figure 8 , Fig. 9 , Fig.11 , Fig.12 As shown, the screw core in-and-out mechanism 22 includes two groups of first fixed boxes 2201, second fixed boxes 2202, and third fixed boxes 2203 arranged at the front and rear sides of the top of the fixed mold 2. The first fixed box 2201, the second fixed box 2202, and the third fixed box 2203 are connected in sequence from left to right. Two internal thread sleeves 2204 are slidably arranged inside the first fixed box 2201. The third fixed box 2203 is provided with a first gear hole 2205 and two second gear holes 2206 connected to the first gear hole 2205 on one side adjacent to the second fixed box 2202. A first gear 2207 is rotatably connected in the first gear hole 2205, and the second gear hole 2206 is connected to the second gear hole 2206. A second gear 2208 meshing with the first gear 2207 is provided in 2206, a threaded rod 2209 threadedly connected to the internal threaded sleeve 2204 is fixedly connected to the axial rod of the second gear 2208 near the second fixed box 2202, a positioning sleeve 2210 is sleeved on the other end and a screw core 2211 is fixed on the end, the positioning sleeve 2210 is passed through and fixed in the third fixed box 2203, the screw core 2211 passes through the metal tube 7 and the end thereof abuts against the inner sleeve rod 2407, the end of the metal tube 7 near the screw core 2211 abuts against the positioning sleeve 2210, and a second power mechanism for driving the first gear 2207 to rotate is provided on the fixed mold 2;

[0057] like Fig.11 , Fig.13 , Fig.14 As shown, the second power mechanism includes a third oil cylinder 2212 fixed on the front side of the fixed mold 2, the end of the piston rod of the third oil cylinder 2212 is fixedly connected to a moving plate 2213, the end of the moving plate 2213 is fixedly connected to a rack connecting plate 2214, the rack connecting plate 2214 is slidably arranged in the fixed mold 2, and two second racks 2215 corresponding to the second fixed box 2202 are fixedly connected to the front and rear sides of the top of the rack connecting plate 2214, and the second rack 2215 is located at the bottom of the second fixed box 2202. The second fixing box 2202 is provided with an opening at the bottom thereof and is located at the inner bottom of the second fixing box 2202. A fourth gear 2216 penetrating into the second fixing box 2202 is fixedly provided on one side of the first gear 2207 close to the second fixing box 2202, and the fourth gear 2216 is meshed with the corresponding second rack 2215. Limiting rods 2217 are clamped at the front and rear sides of the internal threaded sleeve 2204, and the limiting rods 2217 on the internal threaded sleeve 2204 slide along the upper and lower inner walls of the first fixing box 2201.

[0058] Specifically, after the metal tube 7 is assembled, the third oil cylinder 2212 pushes the movable plate 2213 to move, thereby driving the two second racks 2215 on the rack connecting plate 2214 to move. At this time, the fourth gear 2216 rotates, and the fourth gear 2216 drives the first gear 2207 to rotate, the first gear 2207 drives the second gear 2208 to rotate, and the second gear 2208 drives the threaded rod 2219 to rotate, thereby completing the entry and exit of the screw mold core 2211. When injecting glue, the screw mold core 2211 is screwed into the metal tube 7. After the glue injection is completed, the screw mold core 2211 is controlled to be screwed out of the metal tube 7 and returned to the positioning sleeve 2210.

[0059] like Fig.17 As shown, the metal tube positioning mechanism 23 includes a pair of positioning seats 2301, the two positioning seats 2301 are arranged on the front and rear sides of the top of the fixed mold 2, and the positioning seats 2301 correspond to the loading and unloading seats 2402 one by one, and the top of the positioning seat 2301 is provided with two first positioning grooves 2302 corresponding to the metal tube 7, and the metal tube 7 is placed in the first positioning grooves 2302, and the top of the positioning seat 2301 near one end of the third fixing box 2203 is provided with two second positioning grooves 2303 matching the positioning sleeve 2210, and the end of the positioning sleeve 2210 abuts in the second positioning groove 2303;

[0060] like Fig.18 As shown, the screw core adjustment mechanism 21 includes two adjustment seats 2101 arranged on the top of the fixed mold 2, the adjustment seat 2101 is closely arranged with the first fixed box 2201, and two first grooves 2102 corresponding to the threaded rod 2209 are arranged on the adjustment seat 2101, and wedge-shaped adjustment grooves 2103 are arranged on the front and rear sides of the first groove 2102, and a wedge-shaped adjustment block 2104 is inserted in the adjustment groove 2103 to slide up and down, and an adjustment bolt is threadedly connected on the adjustment block 2104, and the adjustment bolt is threadedly connected in the adjustment groove 2103, and the adjustment block 2104 is in contact with the internal thread sleeve 2204;

[0061] Specifically, during glue injection, after the screw mold core 2211 is screwed into the metal tube 7, in order to ensure that the front end of the inner worm after injection molding is flush with the front end of the metal tube 7, the adjusting bolt is rotated to make the adjusting block 2104 move in the adjusting groove 2103, thereby pushing the internal threaded sleeve 2204 to move, and the internal threaded sleeve 2204 drives the threaded rod 2209, the second gear 2208, and the screw mold core 2211 to move until the end of the shaft rod of the second gear 2208 abuts against the end of the metal tube 7. At this time, the screw mold core 2211 fixed to the end of the shaft rod is completely located in the metal tube 7, and the end is flush with the end of the metal tube 7, thereby ensuring the molding quality.

[0062] The movable mold 1 is driven by the movable mold plate 4 to close the mold with the fixed mold 2, and the metal tube 7 is pressed by the metal tube clamping mechanism 12. The gap between the positioning sleeve 2210, the screw mold core 2211, the metal tube 7, and the inner sleeve rod 2407 is the inner worm cavity to be injected, and the injection mechanism 11 is connected to the inner worm cavity.

[0063] like Fig.15 As shown, the metal tube clamping mechanism 12 includes a plurality of clamping seats 1201 corresponding to the metal tubes 7, the bottom of the clamping seat 1201 is open and fixed to the bottom of the movable mold 1 by bolts, a clamping block 1202 is provided inside the clamping seat 1201 for sliding up and down, a pair of second springs 1203 are provided on the top of the clamping block 1202, the top of the second spring 1203 is connected to the movable mold 1, and an arc groove 1204 is provided at the bottom of the clamping seat 1201 and the clamping block 1202, and the metal tube 7 is clamped and fixed by the arc groove 1204 at the bottom of the clamping block 1202;

[0064] Specifically, when the mold is closed, the clamping seat 1201 is placed on the top of the fixed mold 2, and at this time the clamping block 1202 clamps the metal tube 7 under the action of the second spring 1203.

[0065] like Fig.10 As shown, the glue injection mechanism 11 includes a glue feeding main cup 1101 and a glue feeding sub-cup 1102. The glue feeding main cup 1101 and the glue feeding sub-cup 1102 are respectively arranged on the movable mold base 3 and the movable mold 1, and each glue feeding sub-cup 1102 is located directly above the part to be cast of each metal tube 7. The glue feeding main cup 1101 and the glue feeding sub-cup 1102 are connected by a shunt pipe. A glue injection head 1103 is arranged at the bottom of the glue feeding sub-cup 1102. A cover box 1 corresponding to the positioning seat 2301 is arranged in the movable mold 1. 104, the cover box 1104 is inserted into the positioning seat 2301, and a third positioning groove 1105 corresponding to the second positioning groove 2303 is provided at the bottom of the cover box 1104, and the upper part of the positioning sleeve 2210 abuts against the third positioning groove 1105. A glue injection seat 1106 corresponding to the glue injection point is provided at the bottom of the cover box 1104, and the glue injection head 1103 passes into the cover box 1104 and is placed on the glue injection seat 1106, and the glue outlet of the glue injection head 1103 is connected with the glue injection point of the metal tube 7.

[0066] A plurality of guide sleeves 8 are embedded in the top edge of the fixed mold 2, and a plurality of guide rods corresponding to the guide sleeves 8 are provided on the movable mold 1, and the guide rods are inserted into the guide sleeves 8; cooling water pipes are laid in the movable mold 1, the fixed mold 2, the cover box 1104, and the positioning seat 2301, and the cooling water pipes are connected to the external water cooling equipment.

[0067] When the present invention is working, the metal tube 7 is installed through the metal tube loading and unloading mechanism 24. After installation, the end position of the metal tube 7 is adjusted through the metal tube adjusting mechanism 25 to make it abut against the positioning sleeve 2210, and then the screw mold core 2211 is driven to be screwed into the metal tube 7 through the screw mold core entry and exit mechanism 22. Then, the end position of the screw mold core 2211 is adjusted through the screw mold core adjusting mechanism 21 to make it flush with the front end of the metal tube 7, and the movable mold 1 is closed. The metal tube 7 is further pressed by the metal tube clamping mechanism 12, and the glue is injected by the glue injection mechanism 11. The inner worm injection molding of four metal tubes 7 can be completed at one time. After the glue injection is completed, it is cooled by the internally configured cooling water pipe. After molding, the mold is opened, the screw mold core 2211 is screwed out of the metal tube 7, the metal tube adjusting mechanism 25 returns to the initial position, and the loading and unloading seat 2402 is rotated to vertical under the first power mechanism, and the metal tube 7 can be directly taken out, and then a new metal tube 7 is replaced, and the above steps can be repeated.

[0068] The present invention can injection mold the inner worm of four metal tubes 7 at one time, and the molding efficiency is high; the metal tube 7 is easy to load and unload, saving time and labor; the position of the metal tube 7 and the screw mold core 2211 is adjustable to ensure that the ends are aligned, and the molding quality is good.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The above is an exemplary description of the present invention. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A worm injection mold for an automatic control system for opening and closing a metal tube of a rear tailgate of an automobile, comprising a movable mold (1) and a fixed mold (2), wherein the movable mold (1) is provided with a movable mold seat (3) at the top and is fixedly connected to a movable mold plate (4) of an injection molding device through the movable mold seat (3), and the fixed mold (2) is provided with a fixed mold seat (5) at the bottom and is fixedly connected to a fixed mold plate (6) of an injection molding machine through the fixed mold seat (5), characterized in that: The fixed mold (2) is provided with a screw mold core adjustment mechanism (21), a screw mold core entry and exit mechanism (22), a metal tube positioning mechanism (23), a metal tube loading and unloading mechanism (24), and a metal tube adjustment mechanism (25) from left to right. The movable mold (1) is located above the screw mold core adjustment mechanism (21), the screw mold core entry and exit mechanism (22), and the metal tube positioning mechanism (23). The movable mold (1) is provided with a glue injection mechanism (11) and a metal tube pressing mechanism (12). The metal tube loading and unloading mechanism (24) comprises a pair of through holes (2401), a loading and unloading seat (2402) is rotatably connected in the through holes (2401) via a rotating shaft, a first power mechanism for driving the corresponding loading and unloading seat (2402) to rotate is respectively provided on the front and rear side walls of the fixed mold (2), a first fixed block (2403) is provided on the front and rear sides of the top of the loading and unloading seat (2402) close to one end of the metal tube adjustment mechanism (25), a first push block (2404) is slidably provided between the opposite surfaces of the two first fixed blocks (2403), a second fixed block (2405) is respectively provided on the front and rear sides and the middle of the top of the loading and unloading seat (2402) away from the metal tube adjustment mechanism (25), a second push block (2406) is slidably provided between the opposite surfaces of two adjacent second fixed blocks (2405), and an inner sleeve rod (2407) runs through the second push block (2406). A clamping block (2408) is provided at one end of the inner sleeve rod (2407), a clamping groove (2409) corresponding to the clamping block (2408) is provided on the first push block (2404), the clamping block (2408) is clamped on the clamping groove (2409), and a first spring (2410) is sleeved on the inner sleeve rod (2407), the first spring (2410) is located between the first push block (2404) and the second push block (2406), a positioning protrusion (2411) is provided at one end of the second push block (2406) away from the first push block (2404), and the metal tube (7) is positioned on the positioning protrusion (2411) through a notch clamp at the end, the top of the second push block (2406) is fixed with a limiting block (2412) by bolts, and the bottom of the limiting block (2412) away from the second push block (2406) is clamped into the clamping groove (2409); The metal pipe adjustment mechanism (25) comprises a pair of first oil cylinders (2501), wherein the first oil cylinders (2501) are fixed to the top of the fixed mold (2) near one end of the metal pipe loading and unloading mechanism (24), the piston rod end of the first oil cylinder (2501) is fixedly connected to a third push block (2502), the front and rear sides and the middle of the top of the fixed mold (2) are fixedly connected to a third fixed block (2503), the front and rear sides of the bottom of the third push block (2502) are fixedly connected to a fourth push block (2504), the third push block (2502) and the fourth push block (2504) slide along the opposite surfaces of two adjacent third fixed blocks (2503), the front and rear side walls of the loading and unloading seat (2402) are provided with push grooves (2505) corresponding to the fourth push block (2504), and the fourth push block (2504) is slidably inserted into the push grooves (2505); The screw core entry and exit mechanism (22) comprises two groups of a first fixed box (2201), a second fixed box (2202), and a third fixed box (2203) arranged at the front and rear sides of the top of the fixed mold (2); the first fixed box (2201), the second fixed box (2202), and the third fixed box (2203) are connected in sequence from left to right; two internal thread sleeves (2204) are slidably arranged inside the first fixed box (2201); a first gear hole (2205) and two second gear holes (2206) connected to the first gear hole (2205) are arranged on one side of the third fixed box (2203) adjacent to the second fixed box (2202); a first gear (2207) is rotatably connected inside the first gear hole (2205); and the second gear hole (2206) is rotatably connected to the first gear hole (2207). 06) is provided with a second gear (2208) meshing with the first gear (2207); a threaded rod (2209) threadedly connected to the internal threaded sleeve (2204) is fixedly connected to one end of the axial rod of the second gear (2208) close to the second fixed box (2202); a positioning sleeve (2210) is sleeved on the other end and a screw thread mold core (2211) is fixed on the end; the positioning sleeve (2210) is passed through and fixed in the third fixed box (2203); the screw thread mold core (2211) passes through the metal tube (7) and the end thereof abuts against the inner sleeve rod (2407); the end of the metal tube (7) close to the screw thread mold core (2211) abuts against the positioning sleeve (2210); a second power mechanism for driving the first gear (2207) to rotate is provided on the fixed mold (2); The metal tube positioning mechanism (23) comprises a pair of positioning seats (2301), the two positioning seats (2301) being arranged at the front and rear sides of the top of the fixed mold (2), and the positioning seats (2301) corresponding to the loading and unloading seats (2402) one by one, the top of the positioning seat (2301) being provided with two first positioning grooves (2302) corresponding to the metal tube (7), the metal tube (7) being placed in the first positioning grooves (2302), the top of the positioning seat (2301) being provided with two second positioning grooves (2303) matching with the positioning sleeve (2210) at one end close to the third fixing box (2203), and the end of the positioning sleeve (2210) abutting against the second positioning groove (2303); The screw die core adjustment mechanism (21) comprises two adjustment seats (2101) arranged on the top of the fixed die (2); the adjustment seats (2101) are arranged closely to the first fixed box (2201); the adjustment seats (2101) are provided with two first grooves (2102) corresponding to the threaded rods (2209); the first grooves (2102) are provided with wedge-shaped adjustment grooves (2103) on the front and rear sides; a wedge-shaped adjustment block (2104) is inserted into the adjustment groove (2103) for sliding up and down; an adjustment bolt is threadedly connected to the adjustment block (2104); the adjustment bolt is threadedly connected to the adjustment groove (2103); the adjustment block (2104) is in contact with the internal thread sleeve (2204); The movable mold (1) is driven by the movable mold plate (4) to close the mold with the fixed mold (2), and the metal tube (7) is pressed by the metal tube pressing mechanism (12). The gap between the positioning sleeve (2210), the screw mold core (2211), the metal tube (7), and the inner sleeve rod (2407) is the inner worm cavity to be injected, and the injection mechanism (11) is connected to the inner worm cavity.

2. The worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of an automobile according to claim 1, characterized in that: The first power mechanism comprises a second oil cylinder (2413) respectively fixed on the front and rear side walls of the fixed mold (2) near one end of the metal tube adjustment mechanism (25); a connecting block (2414) is fixedly connected to the end of the piston rod of the second oil cylinder (2413); a first rack (2415) is fixedly connected to the connecting block (2414); a slide groove (2416) is provided on the front and rear side walls of the fixed mold (2); a rack slide seat corresponding to the first rack (2415) is fixedly connected in the slide groove (2416); (2417), the first rack (2415) is slidably arranged in the rack slide (2417), the top of the fixed mold (2) is provided with a slot (2418) corresponding to the rack slide (2417), the slot (2418) is connected to the slide (2416), and the rotating shaft on the loading and unloading seat (2402) is adjacent to one end of the first rack (2415) and extends into the slot (2418) and is fixedly connected to a third gear (2419) meshing with the first rack (2415).

3. The worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of an automobile according to claim 1, characterized in that: The second power mechanism comprises a third oil cylinder (2212) fixed to the front side of the fixed mold (2); the end of the piston rod of the third oil cylinder (2212) is fixedly connected to a movable plate (2213); the end of the movable plate (2213) is fixedly connected to a rack connecting plate (2214); the rack connecting plate (2214) is slidably arranged in the fixed mold (2); two second racks (2215) corresponding to the second fixed box (2202) are fixedly connected to the front and rear sides of the top of the rack connecting plate (2214); the second racks (2215) are located at the bottom of the second fixed box (2202); the bottom of the second fixed box (2202) is opened and located at the bottom of the second fixed box (2202); a fourth gear (2216) is fixedly arranged on the side of the first gear (2207) close to the second fixed box (2202) and penetrates into the second fixed box (2202); the fourth gear (2216) is meshed with the corresponding second rack (2215).

4. The worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of an automobile according to claim 1, characterized in that: Limit rods (2217) are clamped on the front and rear sides of the internal threaded sleeve (2204), and the limit rods (2217) on the internal threaded sleeve (2204) slide along the upper and lower inner walls of the first fixing box (2201).

5. The worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of an automobile according to claim 1, characterized in that: The metal tube clamping mechanism (12) comprises a plurality of clamping seats (1201) corresponding to the metal tubes (7); the clamping seats (1201) are provided with an opening at the bottom and are fixed to the bottom of the movable mold (1) by bolts; a clamping block (1202) is provided inside the clamping seat (1201) so as to slide up and down; a pair of second springs (1203) are provided at the top of the clamping block (1202); the top of the second spring (1203) is connected to the movable mold (1); arc grooves (1204) are provided at the bottom of the clamping seat (1201) and the clamping block (1202); and the metal tube (7) is clamped and fixed by the arc grooves (1204) at the bottom of the clamping block (1202).

6. The worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of an automobile according to claim 1, characterized in that: The glue injection mechanism (11) comprises a glue injection main cup (1101) and a glue injection sub-cup (1102). The glue injection main cup (1101) and the glue injection sub-cup (1102) are respectively arranged on the movable mold base (3) and the movable mold (1), and each glue injection sub-cup (1102) is located directly above the part to be cast of each metal tube (7). The glue injection main cup (1101) and the glue injection sub-cup (1102) are connected by a shunt pipe. A glue injection head (1103) is arranged at the bottom of the glue injection sub-cup (1102). A cover box (1103) corresponding to the positioning seat (2301) is arranged in the movable mold (1). 04), the cover box (1104) is plugged into the positioning seat (2301), the bottom of the cover box (1104) is provided with a third positioning groove (1105) corresponding to the second positioning groove (2303), the upper part of the positioning sleeve (2210) abuts against the third positioning groove (1105), the bottom of the cover box (1104) is provided with a glue injection seat (1106) corresponding to the glue injection point, and the glue injection head (1103) is inserted into the cover box (1104) and placed on the glue injection seat (1106), and the glue outlet of the glue injection head (1103) is connected to the glue injection point of the metal tube (7).

7. The worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of an automobile according to claim 1, characterized in that: A plurality of guide sleeves (8) are embedded in the top edge of the fixed mold (2), and a plurality of guide rods corresponding to the guide sleeves (8) are provided on the movable mold (1), and the guide rods are inserted into the guide sleeves (8).

8. The worm injection mold for the automatic control system of the metal tube for opening and closing the rear door of an automobile according to claim 6, characterized in that: Cooling water pipes are laid inside the movable mold (1), the fixed mold (2), the cover box (1104), and the positioning seat (2301), and the cooling water pipes are connected to external water cooling equipment.

Images