A multi-station fresh-keeping box cover production injection molding machine and a method of using the same

Abstract

The present application relates to the field of production and processing of fresh-keeping box cover, and discloses a multi-station fresh-keeping box cover production injection molding machine and a using method thereof. The present application aims to solve the problem that the nozzle of the injection molding machine is blocked by the solidified plastic particles after the fresh-keeping box cover is injection molded. Although the solidified plastic particles at the nozzle can be melted by heating, the temperature is gradually increased, the solidified plastic particles are large in size, and the melting speed is slow. When the spiral conveying rod conveys the subsequent plastic solution to the nozzle, the solidified plastic solution at the nozzle has not been completely melted, which affects the discharging efficiency of the nozzle and pushes the plastic particles that have not been completely melted into the mold, affecting the injection molding of the mold. The present application uses the driving mechanism to clean the nozzle, so that the plastic particles that are cooled down and solidified at the nozzle mouth part of the last injection molding are conducted, thereby avoiding the blockage at the nozzle mouth and affecting the injection molding effect of the fresh-keeping box cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fresh-keeping box cover production and processing, in particular to a multi-station fresh-keeping box cover production injection molding machine and a using method thereof. BACKGROUND

[0002] In the field of fresh-keeping box cover production, an injection molding machine is often used to melt thermoplastic or thermosetting plastic and then inject it into a fresh-keeping box cover mold to wait for it to cool down. When the melted plastic cools down, it will solidify into the shape of the fresh-keeping box cover mold. Then, the mold is opened to form the fresh-keeping box cover.

[0003] During the injection molding process of the fresh-keeping box cover, the plastic particles are heated and melted by the injection molding machine and then injected into the mold. However, the nozzle of the injection molding machine will be blocked by the solidified plastic particles. Although the solidified plastic particles can be melted by heating, the temperature gradually increases, and the solidified plastic particles clump together, which slows down the melting process. When the screw conveyor rod delivers the subsequent plastic solution to the nozzle, the solidified plastic solution on the nozzle has not completely melted, which affects the discharge efficiency of the nozzle and pushes the incompletely melted plastic particles into the mold, affecting the processing of the mold. SUMMARY

[0004] The present application aims to provide a multi-station fresh-keeping box cover production injection molding machine and a using method thereof to solve the problems mentioned in the background. To achieve the above-mentioned purpose, the present application provides the following technical solution: a multi-station fresh-keeping box cover production injection molding machine, comprising a multi-station processing table and an injection molding mechanism, the multi-station processing table is horizontally placed on the ground, the injection molding mechanism comprises a forming mold and an injection molding machine, the forming mold is arranged on the top of the multi-station processing table, the injection molding machine is arranged on the top of the multi-station processing table and connected with the forming mold, a driving mechanism is arranged on the injection molding machine, and the driving mechanism is in rotational cooperation with the injection molding machine.

[0005] Preferably, the injection molding machine comprises a bearing seat, a heating sleeve rod, a driving motor, a driving rod, a driving gear, a transmission gear, a spiral feeding rod, a nozzle and a feeding cylinder, the bearing seat is arranged on the top of the multi-station processing table, the heating sleeve rod is fixedly arranged on the bearing seat, the driving motor is fixedly arranged on the side wall of the bearing seat, the driving rod is arranged on the main shaft of the driving motor and rotationally matched with the bearing seat, the bearing seat is provided with a containing groove, the driving gear is fixedly arranged on the driving rod and located in the containing groove, the transmission gear is rotationally arranged on the bearing seat and engaged with the driving gear, the transmission gear is located in the containing groove, the spiral feeding rod is fixedly connected with the transmission gear and located in the heating sleeve rod, the nozzle is located in the heating sleeve rod and connected with the forming mold, the heating sleeve rod is surrounded by the heating pipelines on the inner wall of the nozzle, and the feeding cylinder is fixedly arranged on the outer wall of the heating sleeve rod and connected with the heating sleeve rod.

[0006] Preferably, the driving mechanism comprises a transmission rod, a moving frame, a clamping sleeve, a stop piece and two limiting rods, the transmission rod is fixedly connected with the driving rod and rotationally matched with the multi-station processing table through the outer wall of the feeding cylinder, the transmission rod is provided with a threaded section, the two limiting rods are symmetrically fixedly arranged on the side wall of the multi-station processing table, the moving frame is arranged on the two limiting rods and slidably matched with the two limiting rods, the clamping sleeve is arranged on the moving frame and rotationally matched with the moving frame, the clamping sleeve is threadedly matched with the threaded section on the transmission rod, and the stop piece is arranged on the moving frame and slidably matched with the moving frame.

[0007] Preferably, the stop piece comprises a clamping column, an elastic spring, a stop plate and two moving clamping plates, the moving frame is provided with a placing groove, the clamping column is arranged on the top of the moving frame and slidably matched with the moving frame, the stop plate is fixedly connected with the bottom of the clamping column and slidably matched with the placing groove, the two ends of the elastic spring are respectively connected with the inner wall of the placing groove in the moving frame and the top of the stop plate, the clamping sleeve is provided with a semi-annular slot, the bottom of the stop plate is located in the semi-annular slot, the two moving clamping plates are symmetrically and slidably arranged on the inner wall of the moving frame, the two moving clamping plates are both provided with V-shaped sliding grooves, and the outer side wall of the stop plate is provided with clamping blocks slidably matched with the V-shaped sliding grooves of the two moving clamping plates.

[0008] Preferably, the mobile frame is fixedly connected with a downward pressing abutting part, the downward pressing abutting part is in sliding fit with the multi-station machining table, the downward pressing abutting part comprises a fixed seat, a sliding plate, a baffle, a pushing frame, a downward pressing frame and two hinged frames, the fixed seat is fixedly arranged on the outer side wall of the multi-station machining table, the sliding plate is connected with the mobile frame and in sliding fit with the fixed seat, one end of each of the two hinged frames is in hinged fit with the sliding plate, two limiting frames are symmetrically arranged on the inner wall of the fixed seat, the pushing frame is slidingly arranged on the two limiting frames and is in hinged fit with the other end of the two hinged frames, the baffle is fixedly arranged on the fixed seat and in abutting fit with the pushing frame, and the downward pressing frame is fixedly arranged on the bottom of the pushing frame.

[0009] Preferably, the bottom of the pushing frame is further fixedly provided with a connecting seat, a cavity is formed in the connecting seat, the bottom of the connecting seat is provided with a connecting frame in sliding fit with the cavity, a pressure spring is further arranged in the cavity, and the two ends of the pressure spring are respectively connected with the inner wall of the cavity and the top of the connecting frame.

[0010] Preferably, a steel guide rod is arranged on the outer wall of the connecting frame, the steel guide rod is in sliding fit with the heating sleeve rod and the nozzle, the other end of the steel guide rod extends into the interior of the nozzle, and the other end of the steel guide rod is provided with a plugging opening for plugging the nozzle.

[0011] Preferably, a cam is fixedly connected to the part of the transmission rod located in the feeding cylinder, a filter screen plate is arranged on the inner wall of the feeding cylinder, the bottom of the filter screen plate is provided with a clamping rod in abutting fit with the cam, and the filter screen plate is in sliding fit with the inner wall of the feeding cylinder.

[0012] Preferably, the use method of the injection molding machine for the multi-station preservation box cover production comprises the following steps:

[0013] S1: when the preservation box cover is injected, the plastic particles for injection are put into the feeding cylinder, then the plastic particles pass through the heating sleeve rod and enter the spiral feeding rod, then the driving motor drives the driving rod to rotate the driving gear, the driving gear rotates to drive the transmission gear to rotate, the transmission gear rotates to rotate the spiral feeding rod and move the plastic particles to the direction of the nozzle, when the plastic particles move to the direction of the nozzle, the heating pipe on the heating sleeve rod heats the plastic particles to melt the plastic particles required for injection, so that the plastic particles reach the nozzle part to form the plastic liquid required for injection, and under the continuous conveying of the spiral feeding rod, the nozzle injects the plastic liquid into the molding mold to realize the injection molding of the preservation box cover;

[0014] S2: When the driving motor rotates, the driving motor drives the driving rod to rotate the transmission rod, and the transmission rod rotates through the threaded segment arranged on the transmission rod to drive the sleeve to move the moving frame on the two limiting rods. At this time, the moving frame moves towards the direction of the nozzle, and the movement of the moving frame drives the lower pressing contact to move to clean the nozzle mouth part of the nozzle, so that the plastic cooled down and solidified on the nozzle mouth part of the last injection molding is conducted, thereby avoiding the nozzle mouth from being blocked to affect the injection molding effect of the preservation box cover;

[0015] S3: When the moving frame continuously moves on the two limiting rods, when it touches the outer wall of the multi-station processing table, the two moving clamping plates will slide on the moving frame under the pushing of the moving frame. The two moving clamping plates slide through the V-shaped sliding groove to drive the two clamping blocks on the stop plate to move in the V-shaped sliding groove, so that the stop plate rises in the placing groove on the moving frame. When the stop plate rises, the bottom of the stop plate is not clamped in the semi-annular slot on the sleeve. At this time, with the rotation of the transmission rod, the spiral segment on the transmission rod drives the sleeve to rotate on the moving clamping plate. At this time, the moving frame no longer moves forward, thereby stopping the moving frame. Through this setting, the moving frame can drive the lower pressing contact to dredge the nozzle mouth, and then remain in the original position without moving, and at the same time, the filter screen plate continuously performs the filtering, crushing and shaking operation on the plastic particles in the feeding cylinder, without affecting the filtering work of the filter screen plate on the feeding cylinder;

[0016] S4: When the driving motor drives the screw feeder rod to convey the plastic particles used for injection molding, the driving rod drives the moving frame to move, the moving frame drives the sliding plate to move on the fixed seat, the sliding plate moves to drive the pushing frame to move on the two limiting frames. When the pushing frame moves, the pushing frame drives the connecting seat to slide on the heating sleeve rod, the connecting seat slides to press the steel guide rod to move, thereby making the steel guide rod pass through the heating sleeve rod, and moving the steel guide rod into the nozzle, thereby breaking the solidified plastic remaining in the nozzle, so that the nozzle mouth is not blocked by the solidified plastic, thereby avoiding affecting the normal work of the nozzle. When the pushing frame contacts the baffle, the pushing frame and the baffle are in contact through the two hinged frames under the continuous movement of the sliding plate, thereby supporting the baffle. At this time, the pushing frame will be pressed down to make the lower pressing frame abut against the bent part of the steel guide rod, thereby avoiding the phenomenon of jamming of the steel guide rod during the guide process of the nozzle, so that the steel guide rod can run smoothly;

[0017] S5: When the steel guide rod guides the nozzle, the steel guide rod can be extruded into the nozzle by pressing the contact piece, and the remaining solidified plastic material in the nozzle is guided to avoid affecting the injection molding operation of the refrigerator box cover, and when the injection molding is completed, the driving motor drives the driving rod to rotate the transmission rod in the opposite direction, and the moving frame is not moved to the side wall of the multi-station machining table, at this time, the elastic spring is arranged to drive the clamping column to move the stop plate downward and abut against the half-ring slot on the clamping sleeve, at this time, the transmission rod is rotated to drive the moving frame to return to the initial position on the two limiting rods, the moving frame moves to drive the pressing contact piece to move outward, and the steel guide rod is pulled out of the nozzle, at this time, the block hole can block the nozzle mouth, so that the nozzle mouth avoids the solidification effect of the solidified plastic on the injection molding efficiency, and the steel guide rod guides the nozzle mouth more smoothly.

[0018] S6: When the injection molding is performed, the driving motor drives the driving rod to rotate, and the driving rod drives the transmission rod to rotate, and the transmission rod drives the cam to rotate to continuously abut against the clamping rod, and the clamping rod continuously rises to drive the filter screen to move up and down in the feeding cylinder, so that the plastic particles required for injection molding are shaken and sieved, and the plastic particles enter the spiral feeding rod, and the heating pipe heats them better.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] In the present application, when the driving motor rotates, the driving motor drives the driving rod to rotate the transmission rod, and the transmission rod rotates to drive the clamping sleeve to move the moving frame on the two limiting rods, at this time, the moving frame moves towards the direction of the nozzle, and the movement of the moving frame drives the pressing contact piece to move to clean the nozzle mouth of the nozzle, so that the plastic solidified in the nozzle mouth is guided, and the injection molding effect of the refrigerator box cover is avoided.

[0021] When the moving frame continuously moves on the two limiting rods, the two moving clamping plates first touch the outer wall of the multi-station machining table when the multi-station machining table is to be touched, at this time, the two moving clamping plates slide on the moving frame under the pushing of the moving frame, the two clamping blocks on the stop plate are driven to move in the V-shaped sliding groove through the sliding of the two moving clamping plates through the V-shaped sliding groove, and the stop plate is lifted in the placing groove on the moving frame, the bottom of the stop plate is not clamped in the half-ring slot on the clamping sleeve, at this time, the screw section on the transmission rod is driven to rotate the clamping sleeve on the moving clamping plate under the rotation of the transmission rod, at this time, the moving frame no longer moves forward, thereby stopping the moving frame, through the setting, the moving frame drives the downward pressing abutting part to dredge the nozzle mouth and keep the original position, and the filter screen plate continuously filters, crushes and shakes the plastic particles in the feeding cylinder, and does not affect the filtering work of the filter screen plate on the feeding cylinder.

[0022] When the driving motor drives the spiral feeding rod to convey the plastic particles used for injection molding through the driving rod, the driving rod drives the moving frame to move, the moving frame drives the sliding plate to move on the fixed seat, the sliding plate drives the pushing frame to move on the two limiting frames, when the pushing frame moves, the pushing frame drives the connecting seat to slide on the heating sleeve rod, the connecting seat slides and extrudes the steel guide rod to move, thereby making the steel guide rod pass through the heating sleeve rod, making the steel guide rod move into the nozzle, thereby breaking the solidified plastic remaining in the nozzle, so that the nozzle mouth is not blocked by the remaining plastic solidification, thereby not affecting the normal work of the nozzle, and when the pushing frame contacts the baffle, the pushing frame and the baffle are in contact through the two hinged frames under the continuous movement of the sliding plate, so that the baffle is supported, at this time, the pushing frame is pressed downward to press the steel guide rod at the bending part of the steel guide rod, thereby avoiding the phenomenon of jamming of the steel guide rod during the guide process of the nozzle, so that the steel guide rod can run smoothly.

[0023] When the steel guide rod guides the nozzle, the steel guide rod is extruded into the nozzle through the downward pressing abutting part, thereby guiding the remaining plastic material in the nozzle to avoid affecting the injection molding operation of the preservation box cover, and after the injection molding is completed, the driving motor drives the driving rod to rotate the transmission rod in the opposite direction, the moving frame does not move to the side wall of the multi-station machining table, at this time, the clamping column is driven to move the stop plate downward through the setting of the elastic spring and abut against the half-ring slot on the clamping sleeve, at this time, the moving frame is driven to return to the initial position on the two limiting rods under the rotation of the transmission rod, the downward pressing abutting part is driven to move through the movement of the moving frame, thereby pulling the steel guide rod out of the nozzle, at this time, the blocking port can block the nozzle mouth, thereby avoiding the influence of plastic solidification on the efficiency of the nozzle mouth, and the steel guide rod can guide the nozzle mouth more smoothly. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the stereoscopic structure of the present application;

[0025] Figure 2 is a schematic view of the stereoscopic structure of the present application;

[0026] Figure 3 is a schematic view of the stereoscopic structure of the present application;

[0027] Figure 4 is a schematic view of the stereoscopic structure of the present application;

[0028] Figure 5 is a schematic view of the stereoscopic structure of the present application;

[0029] Figure 6 is a schematic view of the stereoscopic structure of the present application; Figure 1 ;

[0030] Figure 7 is a schematic view of the stereoscopic structure of the present application; Figure 2 ;

[0031] Figure 8 is a schematic view of the stereoscopic structure of the present application;

[0032] Figure 9 is a schematic view of the stereoscopic structure of the present application; Figure 1 ;

[0033] Figure 10 is a schematic view of the stereoscopic structure of the present application. Figure 2 .

[0034] Figure: 1, multi-station processing platform; 2, injection mechanism; 3, forming mold; 4, injection machine; 41, bearing seat; 42, containing groove; 43, heating sleeve rod; 44, driving motor; 45, driving rod; 46, driving gear; 47, transmission gear; 48, spiral feeding rod; 49, nozzle; 491, feeding cylinder; 5, driving mechanism; 51, transmission rod; 52, threaded section; 53, moving frame; 531, placing groove; 54, clamping sleeve; 541, semi-annular slot; 55, limiting rod; 6, stop piece; 61, clamping column; 62, elastic spring; 63, stop plate; 64, clamping block; 65, moving clamping plate; 651, V-shaped sliding groove; 7, downward pressing contact piece; 71, fixed seat; 72, limiting frame; 73, sliding plate; 74, baffle; 75, pushing frame; 76, downward pressing frame; 77, hinged frame; 79, connecting seat; 791, cavity; 792, connecting frame; 793, pressure spring; 8, steel guide rod; 81, blockage; 9, cam; 91, filter screen; 92, clamping rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] Please refer to Figures 1 to 5 The present application provides a technical solution: a multi-station preservative box cover production injection molding machine, comprising a multi-station processing table 1 and an injection molding mechanism 2, the multi-station processing table 1 is horizontally placed on the ground, the injection molding mechanism 2 comprises a forming mold 3 and an injection molding machine 4, the forming mold 3 is arranged on the top of the multi-station processing table 1, the injection molding machine 4 is arranged on the top of the multi-station processing table 1 and connected with the forming mold 3, the injection molding machine 4 is provided with a driving mechanism 5, and the driving mechanism 5 is rotationally matched with the injection molding machine 4.

[0037] In the present embodiment, as Figure 1 , Figure 2 , Figure 3 , and Figure 4As shown, the injection molding machine 4 comprises a bearing seat 41, a heating sleeve rod 43, a driving motor 44, a driving rod 45, a driving gear 46, a transmission gear 47, a spiral feeding rod 48, a nozzle 49 and a feeding cylinder 491, the bearing seat 41 is arranged on the top of the multi-station processing table 1, the heating sleeve rod 43 is fixedly arranged on the bearing seat 41, the driving motor 44 is fixedly arranged on the side wall of the bearing seat 41, the driving rod 45 is arranged on the main shaft of the driving motor 44 and rotationally matches with the bearing seat 41, the bearing seat 41 is provided with a containing groove 42, the driving gear 46 is fixedly arranged on the driving rod 45 and located in the containing groove 42, the transmission gear 47 is rotationally arranged on the bearing seat 41 and meshes with the driving gear 46, the transmission gear 47 is located in the containing groove 42, the spiral feeding rod 48 is fixedly connected with the transmission gear 47 and located in the heating sleeve rod 43, the nozzle 49 is located in the heating sleeve rod 43 and communicates with the forming mold 3, the heating sleeve rod 43 is located around the inner wall of the nozzle 49 and is filled with heating pipelines, and the feeding cylinder 491 is fixedly arranged on the outer wall of the heating sleeve rod 43 and communicates with the heating sleeve rod 43; when the injection molding of the storage box cover is carried out, the plastic particles for injection molding are put into the feeding cylinder 491, then the injection molding particles pass through the heating sleeve rod 43 and enter the spiral feeding rod 48, then the driving motor 44 drives the driving rod 45 to rotate the driving gear 46, the rotation of the driving gear 46 drives the transmission gear 47 to rotate, the rotation of the transmission gear 47 drives the spiral feeding rod 48 to rotate and then moves the plastic particles to the direction of the nozzle 49, when the plastic particles move to the direction of the nozzle 49, the heating pipelines on the heating sleeve rod 43 heat the plastic particles to melt the plastic particles required for injection molding, so that the plastic particles reach the nozzle 49 to form the plastic liquid required for injection molding, and under the continuous conveying of the spiral feeding rod 48, the nozzle 49 injects the plastic liquid into the forming mold 3, and the injection molding of the storage box cover is realized through the forming mold 3.

[0038] In this embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the drive mechanism 5 includes a transmission rod 51, a moving frame 53, a retaining sleeve 54, a stopper 6, and two limiting rods 55. The transmission rod 51 is fixedly connected to the drive rod 45 and passes through the outer wall of the feeding cylinder 491, rotating in cooperation with the multi-station processing table 1. The transmission rod 51 is provided with a threaded section 52. The two limiting rods 55 are symmetrically fixed on the side wall of the multi-station processing table 1. The moving frame 53 is disposed on the two limiting rods 55 and slides in cooperation with them. The retaining sleeve 54 is disposed on the moving frame 53 and rotates in cooperation with it. The retaining sleeve 54 is threadedly engaged with the threaded section 52 on the transmission rod 51. The stopper 6 is disposed on the moving frame. The moving frame 53 slides on the moving frame 53. When the drive motor 44 rotates, the drive motor 44 will drive the drive rod 45 to rotate the transmission rod 51. The rotation of the transmission rod 51, through the threaded section 52 provided on the transmission rod 51, can drive the sleeve 54 to move the moving frame 53 on the two limit rods 55. At this time, the moving frame 53 moves towards the nozzle 49. The movement of the moving frame 53 can drive the downward pressing contact 7 to move, so that the downward pressing contact 7 cleans the nozzle 49 opening and makes the plastic residue from the previous injection cool down and solidify at the nozzle 49 opening, thereby preventing the nozzle 49 opening from becoming blocked and affecting the injection molding effect of the food storage box lid.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the stop component 6 includes a locking post 61, an elastic spring 62, a stop plate 63, and two movable locking plates 65. The movable frame 53 has a placement groove 531. The locking post 61 is located at the top of the movable frame 53 and slides in cooperation with it. The stop plate 63 is fixedly connected to the bottom of the locking post 61 and slides in cooperation with the placement groove 531. The two ends of the elastic spring 62 are respectively connected to the inner wall of the placement groove 531 in the movable frame 53 and the top of the stop plate 63. The retaining sleeve 54 has an opening... A semi-circular slot 541 is provided, and the bottom of the stop plate 63 is located within the semi-circular slot 541. Two movable clamping plates 65 are symmetrically slidably disposed on the inner wall of the movable frame 53. Each of the two movable clamping plates 65 is provided with a V-shaped sliding groove 651. The outer wall of the stop plate 63 is provided with a clamping block 64 that slides in cooperation with the V-shaped sliding grooves 651 of the two movable clamping plates 65. When the movable frame 53 moves continuously on the two limit rods 55, when it is about to touch the multi-station processing table 1, the two movable clamping plates... The two movable plates 65 first touch the outer wall of the multi-station processing table 1. At this time, under the push of the movable frame 53, the two movable plates 65 will slide on the movable frame 53. The sliding of the two movable plates 65 drives the two locking blocks 64 on the stop plate 63 to move in the V-shaped slide groove 651, thereby causing the stop plate 63 to rise in the placement groove 531 on the movable frame 53. When the stop plate 63 rises, the bottom of the stop plate 63 is no longer engaged with the semi-circular slot 541 on the sleeve 54. At this time, with the transmission rod The spiral segment on the rotating transmission rod 51 drives the sleeve 54 to rotate on the moving plate 65. At this time, the moving frame 53 no longer moves forward, thus stopping the moving frame 53. This setting allows the moving frame 53 to drive the downward pressing contact member 7 to clear the mouth of the nozzle 49 and then remain in the original position without moving. At the same time, it drives the filter screen plate 91 to continuously filter, crush and shake the plastic particles in the feeding cylinder 491, without affecting the filtering work of the filter screen plate 91 on the feeding cylinder 491.

[0040] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the mobile frame 53 is fixedly connected with a downward pressing contact 7 which is in sliding fit with the multi-station processing table 1. The downward pressing contact 7 comprises a fixed seat 71, a sliding plate 73, a baffle 74, a pushing frame 75, a downward pressing frame 76 and two hinged frames 77. The fixed seat 71 is fixedly arranged on the outer side wall of the multi-station processing table 1. The sliding plate 73 is connected with the mobile frame 53 and in sliding fit with the fixed seat 71. The two hinged frames 77 are in hinged fit with the sliding plate 73 at one end. Two limiting frames 72 are symmetrically arranged on the inner wall of the fixed seat 71. The pushing frame 75 is slidingly arranged on the two limiting frames 72 and in hinged fit with the other end of the two hinged frames 77. The baffle 74 is fixedly arranged on the fixed seat 71 and in contact fit with the pushing frame 75. The downward pressing frame 76 is fixedly arranged on the bottom of the pushing frame 75.

[0041] The bottom of the pushing frame 75 is further fixedly provided with a connecting seat 79. The connecting seat 79 is internally provided with a cavity 791. The bottom of the connecting seat 79 is provided with a connecting frame 792 in sliding fit with the cavity 791. The cavity 791 is further provided with a pressure spring 793. The two ends of the pressure spring 793 are respectively connected with the inner wall of the cavity 791 and the top of the connecting frame 792. The bottom of the connecting frame 792 is in sliding fit with the outer wall of the heating sleeve rod 43.

[0042] When the driving motor 44 drives the screw feeding rod 48 to feed the plastic particles for injection molding through the driving rod 45, the driving rod 45 drives the mobile frame 53 to move. The movement of the mobile frame 53 drives the sliding plate 73 to move on the fixed seat 71. The movement of the sliding plate 73 drives the pushing frame 75 to move on the two limiting frames 72. When the pushing frame 75 moves, the pushing frame 75 drives the connecting seat 79 to slide on the heating sleeve rod 43. The sliding of the connecting seat 79 extrudes the steel guide rod 8 to move through the heating sleeve rod 43, so that the steel guide rod 8 moves into the nozzle 49. Thus, the solidified plastic remaining in the nozzle 49 is broken, so that the injection port of the nozzle 49 is not blocked by the remaining solidified plastic, thereby not affecting the normal work of the nozzle 49. When the pushing frame 75 contacts the baffle 74, the pushing frame 75 and the baffle 74 are in contact and the baffle 74 is supported by the two hinged frames 77 under the continuous movement of the sliding plate 73. At this time, the pushing frame 75 is pressed downward, so that the downward pressing frame 76 contacts the bent part of the steel guide rod 8, thereby avoiding the phenomenon of jamming of the steel guide rod 8 when the steel guide rod 8 is in the process of guiding the nozzle 49, so that the steel guide rod 8 can run smoothly.

[0043] In this embodiment, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 andFigure 8 As shown, the outer wall of the connecting frame 792 is provided with a steel guide rod 8 which penetrates the heating sleeve rod 43 and is in sliding fit with the nozzle 49, the other end of the steel guide rod 8 extends to the inside of the nozzle 49, and the other end of the steel guide rod 8 is provided with a plugging opening 81 which plugs the nozzle 49; when the steel guide rod 8 conducts the nozzle 49, the steel guide rod 8 can be extruded into the nozzle 49 by pressing the abutting piece 7, thereby conducting the remaining solidified plastic material in the nozzle 49 to avoid affecting the injection molding operation on the preservation box cover, and when the injection molding is completed, the driving motor 44 drives the driving rod 45 to rotate the transmission rod 51 in the opposite direction, and the moving frame 53 is not moving towards the side wall of the multi-station processing table 1, at this time, the elastic spring 62 is arranged to drive the clamping column 61 to move downwards and abut against the semi-annular slot 541 on the clamping sleeve 54, at this time, the moving frame 53 can be driven to return to the initial position on the two limiting rods 55 under the rotation of the transmission rod 51, the moving frame 53 drives the pressing abutting piece 7 to move and thereby pulls the steel guide rod 8 outwards from the nozzle 49, at this time, the plugging opening 81 can plug the nozzle 49, thereby avoiding the solidification of the plastic material after the nozzle 49 is plugged, and the efficiency of the injection molding is affected, so that the steel guide rod 8 conducts the nozzle 49 more smoothly.

[0044] In this embodiment, as shown in Figure 1 , Figure 2 and Figure 10 , the part of the transmission rod 51 located in the feeding cylinder 491 is fixedly connected with a cam 9, the inner wall of the feeding cylinder 491 is provided with a filter screen plate 91, the bottom of the filter screen plate 91 is provided with a clamping rod 92 which abuts against the cam 9, and the filter screen plate 91 is in sliding fit with the inner wall of the feeding cylinder 491; when the injection molding is performed, the driving motor 44 drives the driving rod 45 to rotate, the driving rod 45 drives the transmission rod 51 to rotate, the transmission rod 51 drives the cam 9 to rotate, the cam 9 continuously abuts against the clamping rod 92, the clamping rod 92 continuously rises to drive the filter screen plate 91 to move up and down in the feeding cylinder 491, thereby shaking off the plastic particles required for injection molding, and the plastic particles enter the spiral feeding rod 48, and the heating pipeline heats the plastic particles better.

[0045] The use method and advantages of the present application: the use method of the multi-station preservation box cover production injection molding machine, the working process is as follows:

[0046] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 ,Figure 10 As shown:

[0047] S1: When the injection molding of the box cover is carried out, the plastic particles for injection molding are put into the feeding cylinder 491, and then the injection molding particles pass through the heating sleeve rod 43 to the spiral feeding rod 48, and then the driving motor 44 drives the driving rod 45 to rotate the driving gear 46, the rotation of the driving gear 46 drives the transmission gear 47 to rotate, the rotation of the transmission gear 47 drives the spiral feeding rod 48 to rotate and moves the plastic particles to the direction of the nozzle 49, and when the plastic particles move to the direction of the nozzle 49, the heating pipe on the heating sleeve rod 43 heats the plastic particles to melt the plastic particles required for injection molding, so that the plastic particles reach the nozzle 49 part to form the plastic liquid required for injection molding, and under the continuous conveying of the spiral feeding rod 48, the nozzle 49 injects the plastic liquid into the molding mold 3 to realize the injection molding of the box cover;

[0048] S2: When the driving motor 44 rotates, the driving motor 44 drives the driving rod 45 to rotate the transmission rod 51, and the transmission rod 51 rotates to drive the sleeve 54 to move the moving frame 53 on the two limiting rods 55, at this time the moving frame 53 moves towards the direction of the nozzle 49, and the movement of the moving frame 53 drives the lower pressing contact 7 to move to clean the nozzle 49 part of the nozzle 49 to make the last injection residue cool down and solidify to the plastic of the nozzle 49 mouth part, thereby avoiding the nozzle 49 mouth to form blockage affecting the injection effect of the box cover;

[0049] S3: When the moving frame 53 continuously moves on the two limiting rods 55, when it touches the outer wall of the multi-station processing table 1, the two moving clamping plates 65 first touch the outer wall of the multi-station processing table 1 at this time, under the pushing of the moving frame 53, the two moving clamping plates 65 slide on the moving frame 53, the two moving clamping plates 65 slide through the V-shaped sliding groove 651 to drive the two clamping blocks 64 on the stop plate 63 to move in the V-shaped sliding groove 651, thereby making the stop plate 63 rise in the placing groove 531 on the moving frame 53, the bottom of the stop plate 63 is not clamped on the half-ring slot 541 on the sleeve 54 at this time, and the screw segment on the transmission rod 51 drives the sleeve 54 to rotate on the moving clamping plate 65 as the transmission rod 51 rotates at this time, the moving frame 53 no longer moves forward, thereby stopping the moving frame 53, and at the same time driving the filter screen plate 91 to continuously perform the filtering, crushing and shaking operation on the plastic particles in the feeding cylinder 491, without affecting the filtering work of the filter screen plate 91 on the feeding cylinder 491;

[0050] S4: When the driving motor 44 drives the screw rod 45 to make the spiral feeding rod 48 transport the plastic particles for injection molding, the driving rod 45 drives the moving frame 53 to move, the moving of the moving frame 53 drives the sliding plate 73 to move on the fixed seat 71, the moving of the sliding plate 73 drives the pushing frame 75 to move on the two limiting frames 72, when the pushing frame 75 moves, the pushing frame 75 drives the connecting seat 79 to slide on the heating sleeve rod 43, the sliding of the connecting seat 79 extrudes the steel guide rod 8 to move and further makes the steel guide rod 8 pass through the heating sleeve rod 43, the steel guide rod 8 moves to the nozzle 49, further pokes the solidified plastic remaining in the nozzle 49, the nozzle 49 is not blocked by the solidified plastic at the nozzle opening, so that the normal work of the nozzle 49 is not affected, and when the pushing frame 75 contacts the baffle 74, the pushing frame 75 and the baffle 74 are contacted by the two hinged frames 77 under the continuous movement of the sliding plate 73 to support the baffle 74, at this time the pushing frame 75 is pressed down to make the lower pressing frame 76 abut against the bending part of the steel guide rod 8 to avoid the jamming of the steel guide rod 8 when the steel guide rod 8 is guided to the nozzle 49, so that the steel guide rod 8 can run smoothly;

[0051] S5: When the steel guide rod 8 guides the nozzle 49, the steel guide rod 8 is extruded into the nozzle 49 by the lower abutting part 7 to guide the solidified plastic material remaining in the nozzle 49 to avoid affecting the injection molding operation of the cover of the preservation box, and when the injection molding is completed, the driving motor 44 drives the driving rod 45 to rotate the transmission rod 51 in the opposite direction, the moving frame 53 does not move to abut against the side wall of the multi-station machining table 1, at this time the clamping column 61 is driven by the elastic spring 62 to make the stop plate 63 move downward to abut against the semi-annular slot 541 on the clamping sleeve 54, at this time the moving frame 53 is driven by the rotation of the transmission rod 51 to return to the initial position on the two limiting rods 55, the moving of the moving frame 53 drives the lower abutting part 7 to move to pull the steel guide rod 8 out of the nozzle 49, at this time the blocking opening 81 blocks the nozzle opening of the nozzle 49 to avoid the nozzle opening of the nozzle 49 being affected by the solidification of the plastic to make the steel guide rod 8 guide the nozzle opening of the nozzle 49 more smoothly;

[0052] S6: When the injection molding is performed, the driving motor 44 drives the driving rod 45 to rotate, the driving rod 45 drives the transmission rod 51 to rotate, the transmission rod 51 drives the cam 9 to rotate to continuously abut against the clamping rod 92, the clamping rod 92 continuously rises to drive the filter screen plate 91 to move up and down in the feeding cylinder 491, so that the plastic particles required for injection molding are shaken to pass through the sieve to make the plastic particles enter the spiral feeding rod 48 to be heated by the heating pipe better.

[0053] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine for producing multi-station food storage box lids, comprising a multi-station processing table (1) and an injection molding mechanism (2), wherein the multi-station processing table (1) is horizontally placed on the ground, and the injection molding mechanism (2) comprises a molding die (3) and an injection molding machine (4), wherein the molding die (3) is disposed on the top of the multi-station processing table (1), and the injection molding machine (4) is disposed on the top of the multi-station processing table (1) and connected to the molding die (3), characterized in that: The injection molding machine (4) is provided with a drive mechanism (5), which rotates in coordination with the injection molding machine (4); The drive mechanism (5) includes a transmission rod (51), a moving frame (53), a sleeve (54), a stopper (6), and two limiting rods (55). The transmission rod (51) is fixedly connected to the drive rod (45) and passes through the outer wall of the feeding cylinder (491) and rotates with the multi-station processing table (1). The transmission rod (51) is provided with a threaded section (52). The two limiting rods (55) are symmetrically fixed on the side wall of the multi-station processing table (1). The moving frame (53) is provided on the two limiting rods (55) and slides with the two limiting rods (55). The sleeve (54) is provided on the moving frame (53) and rotates with the moving frame (53). The sleeve (54) is threaded with the threaded section (52) on the transmission rod (51). The stopper (6) is provided on the moving frame (53) and slides with the moving frame (53). The stop component (6) includes a locking post (61), an elastic spring (62), a stop plate (63), and two movable locking plates (65). The movable frame (53) has a placement slot (531). The locking post (61) is located on the top of the movable frame (53) and slides with the movable frame (53). The stop plate (63) is fixedly connected to the bottom of the locking post (61) and slides with the placement slot (531). The two ends of the elastic spring (62) are respectively connected to the inner surface of the placement slot (531) in the movable frame (53). The top of the wall and the stop plate (63) are connected. The sleeve (54) has a semi-circular groove (541). The bottom of the stop plate (63) is located in the semi-circular groove (541). The two movable plates (65) are symmetrically slidably arranged on the inner wall of the movable frame (53). Both movable plates (65) are provided with V-shaped grooves (651). The outer wall of the stop plate (63) is provided with a locking block (64) that slides with the V-shaped grooves (651) of the two movable plates (65).

2. The injection molding machine for producing multi-station food storage box lids according to claim 1, characterized in that: The injection molding machine (4) includes a support base (41), a heating sleeve rod (43), a drive motor (44), a drive rod (45), a drive gear (46), a transmission gear (47), a spiral feed rod (48), a nozzle (49), and a feeding cylinder (491). The support base (41) is located on the top of the multi-station processing table (1). The heating sleeve rod (43) is fixedly mounted on the support base (41). The drive motor (44) is fixedly mounted on the side wall of the support base (41). The drive rod (45) is mounted on the main shaft of the drive motor (44) and rotates with the support base (41). The support base (41) has a receiving groove (42). The drive rod (45) is mounted on the main shaft of the drive motor (44) and rotates with the support base (41). The support base (41) has a receiving groove (42). The wheel (46) is fixedly mounted on the drive rod (45) and located in the receiving groove (42). The transmission gear (47) is rotatably mounted on the bearing seat (41) and meshes with the drive gear (46). The transmission gear (47) is located in the receiving groove (42). The spiral feeding rod (48) is fixedly connected to the transmission gear (47) and located in the heating sleeve rod (43). The nozzle (49) is located in the heating sleeve rod (43) and communicates with the molding die (3). The heating sleeve rod (43) is surrounded by heating pipes on the inner wall of the nozzle (49). The feeding cylinder (491) is fixedly mounted on the outer wall of the heating sleeve rod (43) and communicates with the heating sleeve rod (43).

3. The injection molding machine for producing multi-station food storage box lids according to claim 1, characterized in that: A pressing contact (7) is fixedly connected to the movable frame (53). The pressing contact (7) is slidably engaged with the multi-station processing table (1). The pressing contact (7) includes a fixed base (71), a sliding plate (73), a baffle (74), a push frame (75), a pressing frame (76), and two hinge frames (77). The fixed base (71) is fixedly installed on the outer side wall of the multi-station processing table (1). The sliding plate (73) is connected to the movable frame (53) and slides with the fixed base (71). In this arrangement, one end of each of the two hinged frames (77) is hinged to the sliding plate (73), and two limiting frames (72) are symmetrically provided on the inner wall of the fixed seat (71). The push frame (75) is slidably disposed on the two limiting frames (72), and the push frame (75) is hinged to the other end of the two hinged frames (77). The baffle (74) is fixedly disposed on the fixed seat (71) and abuts against the push frame (75). The pressing frame (76) is fixedly disposed at the bottom of the push frame (75).

4. The injection molding machine for producing multi-station food storage box lids according to claim 3, characterized in that: The bottom of the pusher (75) is also fixedly provided with a connecting seat (79), and a cavity (791) is opened in the connecting seat (79). The bottom of the connecting seat (79) is provided with a connecting frame (792) that slides with the cavity (791). A pressure spring (793) is also provided in the cavity (791). The two ends of the pressure spring (793) are respectively connected to the inner wall of the cavity (791) and the top of the connecting frame (792). The bottom of the connecting frame (792) slides with the outer wall of the heating sleeve (43).

5. The injection molding machine for producing multi-station food storage box lids according to claim 4, characterized in that: The outer wall of the connecting frame (792) is provided with a rigid guide rod (8), which passes through the heating sleeve rod (43) and slides with the nozzle (49). The other end of the rigid guide rod (8) extends into the interior of the nozzle (49), and the other end of the rigid guide rod (8) is provided with a plug (81) to block the nozzle (49).

6. The injection molding machine for producing multi-station food storage box lids according to claim 2, characterized in that: A cam (9) is fixedly connected to the part of the transmission rod (51) located inside the feeding cylinder (491). A filter screen plate (91) is provided on the inner wall of the feeding cylinder (491). A locking rod (92) that abuts against the cam (9) is provided at the bottom of the filter screen plate (91). The filter screen plate (91) slides against the inner wall of the feeding cylinder (491).

7. The method of using an injection molding machine for producing multi-station food storage box lids according to claim 1, comprising the following steps: S1: When the food storage box lid is injection molded, the plastic granules for injection are put into the feeding cylinder (491). Then the injection granules pass through the heating sleeve (43) and enter the spiral feeding rod (48). Then the drive motor (44) drives the drive rod (45) to make the drive gear (46) rotate. The drive gear (46) rotates and drives the transmission gear (47) to rotate. The transmission gear (47) rotates and makes the spiral feeding rod (48) rotate, thus moving the plastic granules toward the nozzle (49). When the plastic granules move toward the nozzle (49), the heating pipe on the heating sleeve (43) heats the plastic granules to melt the plastic granules required for injection, so that when the plastic granules reach the nozzle (49), they form the plastic liquid required for injection. Under the continuous conveying of the spiral feeding rod (48), the nozzle (49) injects the plastic liquid into the molding mold (3). The injection molding of the food storage box lid is realized through the molding mold (3). S2: When the drive motor (44) rotates, the drive motor (44) will drive the drive rod (45) to rotate the transmission rod (51). The rotation of the transmission rod (51) through the threaded section (52) on the transmission rod (51) can drive the sleeve (54) to move the moving frame (53) on the two limit rods (55). At this time, the moving frame (53) moves towards the nozzle (49). The movement of the moving frame (53) can drive the downward pressing contact (7) to move, so that the downward pressing contact (7) cleans the nozzle (49) opening of the nozzle (49) and the plastic residue from the previous injection cools down and solidifies at the nozzle (49) opening, thereby preventing the nozzle (49) opening from becoming blocked and affecting the injection effect of the food storage box lid. S3: When the moving frame (53) moves continuously on the two limit rods (55), when it is about to touch the multi-station processing table (1), the two moving plates (65) first touch the outer wall of the multi-station processing table (1). At this time, under the push of the moving frame (53), the two moving plates (65) will slide on the moving frame (53). The sliding of the two moving plates (65) drives the two locking blocks (64) on the stop plate (63) to move in the V-shaped slide groove (651) through the V-shaped slide groove (651), thereby causing the stop plate (63) to rise in the placement groove (531) on the moving frame (53). When the stop plate (63) rises, the bottom of the stop plate (63) will not be... The sleeve (54) engages with the semi-circular slot (541) on the sleeve (54). As the transmission rod (51) rotates, the spiral section on the transmission rod (51) drives the sleeve (54) to rotate on the moving plate (65). At this time, the moving frame (53) stops moving forward, thus stopping the moving frame (53). This setting allows the moving frame (53) to drive the downward pressing contact (7) to clear the nozzle (49) and then remain in the original position without moving. At the same time, it drives the filter screen (91) to continuously filter, crush, and shake the plastic particles in the feeding cylinder (491), without affecting the filtering work of the filter screen (91) on the feeding cylinder (491). S4: When the drive motor (44) drives the screw feeder (48) to transport the plastic granules used for injection molding via the drive rod (45), the drive rod (45) drives the moving frame (53) to move. The movement of the moving frame (53) drives the sliding plate (73) to move on the fixed seat (71). The movement of the sliding plate (73) drives the pusher (75) to move on the two limit frames (72). When the pusher (75) moves, the pusher (75) drives the connecting seat (79) to slide on the heating sleeve rod (43). The sliding of the connecting seat (79) squeezes the rigid guide rod (8) to move, thereby causing the rigid guide rod (8) to pass through the heating sleeve rod (43) and move the rigid guide rod (8) inward toward the nozzle (49). The movement will break the solidified plastic residue inside the nozzle (49), so that the nozzle (49) will not be blocked by the solidified plastic residue, thus not affecting the normal operation of the nozzle (49). When the pusher (75) contacts the baffle (74), the continuous movement of the sliding plate (73) will allow the pusher (75) to contact the baffle (74) through the two hinged frames (77) to support the baffle (74). At this time, the pusher (75) will press down to make the pressing frame (76) abut against the bent part of the rigid guide rod (8), thereby avoiding the rigid guide rod (8) from getting stuck when conducting the flow treatment of the nozzle (49), so that the rigid guide rod (8) can run the process. S5: When the rigid guide rod (8) conducts the flow through the nozzle (49), the rigid guide rod (8) can be squeezed into the nozzle (49) by pressing down the contact piece (7), thereby conducting the solidified plastic material remaining in the nozzle (49) to avoid affecting the injection molding operation of the food storage box lid. After the injection molding is completed, the drive motor (44) drives the drive rod (45) to make the transmission rod (51) rotate in the opposite direction, and the moving frame (53) no longer moves against the side wall of the multi-station processing table (1). At this time, the setting of the elastic spring (62) can drive the locking post (61) to stop the stop plate (63). The lower part of the sleeve (54) abuts against the semi-circular slot (541) on the sleeve (54). At this time, the rotation of the transmission rod (51) can drive the moving frame (53) to return to the initial position on the two limit rods (55). The movement of the moving frame (53) drives the lower pressing contact (7) to move, thereby pulling the rigid guide rod (8) from inside the nozzle (49) outward. At this time, the blocking port (81) can block the opening of the nozzle (49), thereby preventing the opening of the nozzle (49) from solidifying after the plastic solidifies, which affects the injection efficiency and makes the rigid guide rod (8) more smoothly conduct to the opening of the nozzle (49). S6: When injection molding is performed, the drive motor (44) drives the drive rod (45) to rotate. When the drive rod (45) drives the transmission rod (51) to rotate, the transmission rod (51) can drive the cam (9) to rotate so that the cam (9) continuously contacts the clamp rod (92). The clamp rod (92) will continuously lift and drive the filter screen (91) to move up and down in the feeding cylinder (491). This will shake the plastic particles required for injection molding off the powder screen, so that the heating pipe can better heat the plastic particles when they enter the spiral feed rod (48).

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