Injection molding production line

Abstract

This invention discloses an injection molding production line, comprising a loading worktable, an injection worktable, and a receiving worktable arranged sequentially. The loading worktable has corresponding left and right loading mechanisms, with a feeding mechanism above the left loading mechanism. The injection worktable has an injection mechanism, and the receiving worktable has corresponding unloading and collection mechanisms, with the unloading mechanism positioned above the collection mechanism. In the entire injection molding production line, the left loading mechanism conveys and segments the material strip, the right loading mechanism conveys the material segments upwards one by one, the feeding mechanism picks up the material strip and segments and delivers them to the injection mechanism, and the unloading mechanism transports the injection-molded parts to the collection mechanism for collection, ready for subsequent processes. The advantages of this injection molding production line are: significant labor savings, improved production efficiency, increased accuracy of loading position, and a longer service life for the injection molds.

Description

Technical Field

[0001] This invention relates to the field of injection molding production equipment technology, and more particularly to an injection molding production line. Background Technology

[0002] Currently, many internal injection-molded components for mobile phones require pre-embedded metal sheets. Pre-embedded injection molding involves fixing the pre-embedded part in a suitable position within the mold before injecting plastic. To meet the structural strength and functional requirements of mobile phone injection-molded parts, two metal sheets of different materials need to be pre-embedded. Currently, this is generally done manually. Two different metal segments are first prepared using cutting or stamping equipment. The two metal segments are then manually placed in the corresponding positions on the lower mold of the injection molding machine. The injection molding machine is then started, and the molded product is manually removed from the machine, the sprue is separated, and the molded product is collected for subsequent metal scrap separation to obtain the final injection-molded product. This manual process involves too many steps, resulting in high labor intensity, difficulty in improving production efficiency, and an increased risk of safety accidents. The manual separation of the sprue is labor-intensive, and handling the injection-molded product may affect its shape. Furthermore, manual feeding is prone to errors in the feeding sequence and direction of the metal strips, resulting in low production efficiency and inconsistent injection-molded products, which can affect subsequent processing steps or product quality. Some injection molding processes now use automated feeding, typically employing positioning pins on the mold. These pins engage with positioning holes on the metal strip to ensure it lands at the designated position. However, due to manufacturing errors or wear, the feeding equipment may sometimes deviate from the intended position, placing the metal strip on the mold and resulting in inaccurate feeding and the production of defective products.

[0003] In addition, the internal structural components of mobile phone injection molded parts are relatively small, and the requirements for positioning accuracy and product dimensional accuracy during the production process are particularly high. Therefore, we propose an injection molding production line. Summary of the Invention

[0004] The purpose of this invention is to provide an injection molding production line that solves the problems of high labor intensity, low production efficiency, and inaccurate material feeding position in injection molding production lines with two pre-embedded material sections.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An injection molding production line includes: a loading worktable, an injection worktable, and a receiving worktable arranged in sequence. The loading worktable is provided with a corresponding left loading mechanism and a right loading mechanism, and a feeding mechanism is provided above the left loading mechanism. The injection worktable is provided with an injection mechanism, and the receiving worktable is provided with a corresponding unloading mechanism and a collecting mechanism, with the unloading mechanism located above the collecting mechanism.

[0007] The left loading mechanism includes a material roll rack located on one side of the loading workbench. The material roll rack has a feeding roll, and the feeding roll has a material strip. The loading workbench has a conveying device and a segmenting device corresponding to the feeding roll. The conveying device includes a conveying platform located above the loading workbench. The conveying platform has a corresponding conveying base and a conveying top cover. A conveying longitudinal groove is formed between the conveying base and the conveying top cover. The conveying top cover has a pushing groove parallel to the conveying longitudinal groove. A conveying cylinder parallel to the conveying longitudinal groove is located on one side of the conveying longitudinal groove. A longitudinal pushing plate is connected to the guide rod of the conveying cylinder through an elastic connecting device. The pushing plate is set corresponding to the pushing groove. The segmenting device includes a vertical segmenting cylinder located below the conveying platform. The guide rod of the segmenting cylinder is connected to a vertical limiting component through a connecting rod device. The limiting component is located at the end of the conveying longitudinal groove along the conveying direction. The limiting component has a limiting groove corresponding to the conveying longitudinal groove. A storage plate is located at the end of the limiting groove along the conveying direction. The storage plate has a storage groove corresponding to the limiting groove.

[0008] The upper right feeding mechanism includes a feeding base plate located on one side of the storage plate. The feeding base plate is provided with several feeding positioning rods and lifting through holes. The feeding positioning rods form a feeding bin, which is correspondingly arranged with the storage tank. A lifting drive device is provided below the feeding bin. The lifting drive device is provided with vertical lifting rods, which are correspondingly arranged with the lifting through holes.

[0009] The feeding mechanism is located above the conveying device. The feeding mechanism includes a first fixed platform located above the conveying device, a first horizontal slide table on the first fixed platform, a first horizontal slider on the first horizontal slide table, a first connecting plate on the first horizontal slider, a first longitudinal slide table below the first connecting plate, a first longitudinal slider on the first longitudinal slide table, and the first longitudinal slider connected to the first connecting plate. A feeding plate is located at the front end of the first longitudinal slide table, and corresponding left and right pick-and-place devices are located on both sides of the feeding plate. The left pick-and-place device includes a vertical left pick-and-place cylinder located on one side of the feeding plate, a horizontal upper left pick-and-place plate at the lower end of the guide rod of the left pick-and-place cylinder, and two ends of the upper left pick-and-place plate... A vertical left guide post is slidably connected via a left linear bearing. The bottom of the left guide post is equipped with a horizontal lower left pick-and-place plate. The lower end of the lower left pick-and-place plate is equipped with a left suction cup, which is correspondingly set with the storage tank. The lower left pick-and-place plate is equipped with two corresponding left positioning posts. The right pick-and-place device includes a vertical right pick-and-place cylinder located on the other side of the feeding plate. The lower end of the guide rod of the right pick-and-place cylinder is equipped with an upper right pick-and-place plate. The two ends of the upper right pick-and-place plate are slidably connected to right guide posts via right linear bearings. The bottom of the right guide post is equipped with a horizontal lower right pick-and-place plate. The lower end of the lower right pick-and-place plate is equipped with a right suction cup, which is correspondingly set with the material storage bin. The lower right pick-and-place plate is equipped with two corresponding right positioning posts, and the left positioning posts are correspondingly set with the right positioning posts.

[0010] The injection molding mechanism includes a lower mold mounted on an injection molding worktable. The lower mold has a positioning hole corresponding to the left positioning post. An injection device is located above the lower mold, and an upper mold corresponding to the lower mold is located at the bottom of the injection device.

[0011] The unloading mechanism includes a second fixed platform located above the receiving workbench, a second connecting plate located below the second fixed platform, a second longitudinal slide table located at the bottom of the second connecting plate, a second longitudinal slider located on the second longitudinal slide table, the second longitudinal slider being connected to the second connecting plate, a longitudinal unloading cylinder located at the rear end of the second longitudinal slide table, and an unloading pick-and-place device located at the lower end of the guide rod of the unloading cylinder, the unloading pick-and-place device being correspondingly set with the lower mold.

[0012] The collection mechanism includes a collection base plate on the receiving workbench, a collection base support on the collection base plate, and a plurality of collection positioning columns on the collection base support. The collection positioning columns form a collection chamber, and the collection chamber is correspondingly set with the material unloading and loading device.

[0013] Furthermore, the height of the limiting groove gradually decreases along the conveying direction.

[0014] Furthermore, a slide rail parallel to the conveying longitudinal trough is provided on one side of the conveying longitudinal trough. The elastic connecting device includes a slider on the guide rod of the conveying cylinder. The slider is configured to cooperate with the slide rail. A sliding fixed seat is provided on the slider. A fixed plate is provided on the sliding fixed seat. A spring groove is provided on the fixed plate. The push plate is rotatably connected to one end of the sliding fixed seat. A spring corresponding to the spring groove is provided at the upper end of the push plate. The lower end of the push plate is a push end corresponding to the push groove. The front end of the push end is a feeding surface perpendicular to the feeding direction, and the rear end is an inclined surface at an acute angle to the feeding surface.

[0015] Furthermore, the conveying longitudinal trough is provided with a top material device at the beginning of the feeding direction. The top material device includes a top material mounting block at the bottom of the conveying base. The top material mounting block is provided with two lower top material spring grooves. A vertical top material block is provided above the top material mounting block. The conveying base is provided with a through hole that mates with the top material block. The bottom of the top material block is provided with an upper top material spring groove corresponding to the lower top material spring groove. A compression spring is provided between the upper and lower top material spring grooves. The top material block is provided with a top material horizontal surface corresponding to the conveying longitudinal trough.

[0016] Furthermore, the linkage device includes a horizontal shaft fixing seat located at the bottom of the conveyor table. The horizontal shaft fixing seat has a vertical limiting through hole. A limiting fixing seat passing through the conveyor table is located in the limiting through hole. A limiting component is fixed on the limiting fixing seat. A horizontal shaft is located at the lower end of the horizontal shaft fixing seat. A connecting rod is located on the guide rod of the segmented cylinder. The middle of the connecting rod is hinged to the horizontal shaft, one end is hinged to the guide rod of the segmented cylinder, and the other end is hinged to the lower end of the limiting fixing seat.

[0017] Furthermore, a segmented positioning device is provided below the storage plate. The segmented positioning device includes a vertical segmented positioning cylinder located below the storage plate. A segmented positioning pin is provided on the guide rod of the segmented positioning cylinder. A plurality of positioning holes are evenly provided on the material belt. The segmented positioning pin passes through the conveyor table and the storage plate and is set to correspond to the positioning holes on the material belt.

[0018] Furthermore, the front and rear ends of the lower mold are symmetrically arranged with respect to the center of the lower mold, the storage groove is arranged correspondingly to the lower mold, and the feeding roll and the segmentation device are respectively provided in two sets.

[0019] Furthermore, the material feeding and unloading device includes a horizontal upper mounting plate connected to the guide rod of the material feeding cylinder. The bottom end of the upper mounting plate is provided with a sprue clamp. Both ends of the upper mounting plate are provided with vertical connecting columns via linear bearings. The bottom end of the connecting columns is provided with a lower mounting plate parallel to the upper mounting plate. The lower mounting plate is provided with a material feeding clamp. A sprue groove is provided between the injection molding worktable and the receiving worktable.

[0020] Furthermore, the lifting drive device includes a lifting through motor located below the material storage bin, a through screw on the lifting through motor, a lifting plate fixed to the top of the through screw, and the lifting rod fixed to the lifting plate.

[0021] Furthermore, the bottom end of the second fixed platform is provided with a second horizontal slide, the second horizontal slide is provided with a second horizontal slider, the second connecting plate is provided on the second horizontal slider, the collecting base plate is evenly provided with a plurality of collecting bottom grooves, the collecting base support is configured to cooperate with the collecting bottom grooves, and one end of the collecting bottom groove is provided with a material blocking magnet.

[0022] This invention includes a loading worktable, an injection molding worktable, and a receiving worktable arranged sequentially. The loading worktable has corresponding left and right loading mechanisms, with a feeding mechanism above the left loading mechanism. The injection molding worktable has an injection molding mechanism, and the receiving worktable has corresponding unloading and collection mechanisms, with the unloading mechanism located above the collection mechanism. In the entire injection molding production line, the left loading mechanism conveys and segments the material strip, the right loading mechanism conveys the material segments upwards one by one, the feeding mechanism picks up the material strip and segments and delivers them to the injection molding mechanism, and the unloading mechanism transports the injection-molded parts to the collection mechanism for collection, ready for subsequent processes. The advantages of this injection molding production line are: significant labor savings, improved production efficiency, increased accuracy of loading position, and a longer service life for the injection molds. Attached Figure Description

[0023] Figure 1 A three-dimensional structural schematic diagram of the injection molding production line provided by the present invention;

[0024] Figure 2 A three-dimensional structural diagram of the upper left feeding mechanism provided by the present invention. Figure 2 ;

[0025] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0026] Figure 4 A cross-sectional view of the left-side upper feeding mechanism provided by the present invention;

[0027] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0028] Figure 6 for Figure 4 A magnified view of a section at point C;

[0029] Figure 7 A three-dimensional structural schematic diagram of the conveying device provided by the present invention;

[0030] Figure 8 for Figure 7 A magnified view of a section at point D;

[0031] Figure 9 A three-dimensional structural schematic diagram of the segmentation device provided by the present invention;

[0032] Figure 10 A three-dimensional structural diagram of the upper right feeding mechanism provided by the present invention;

[0033] Figure 11 for Figure 10 A magnified view of a section at point E in the middle;

[0034] Figure 12 for Figure 10 A magnified view of a section at point F in the middle;

[0035] Figure 13 A cross-sectional view of the upper right feeding mechanism provided by the present invention;

[0036] Figure 14 A three-dimensional structural diagram of the feeding mechanism provided by the present invention;

[0037] Figure 15 for Figure 14 A magnified view of a section at point G in the middle;

[0038] Figure 16 A three-dimensional structural schematic diagram of the injection molding mechanism provided by the present invention;

[0039] Figure 17 for Figure 16 A magnified view of a section at point H in the middle;

[0040] Figure 18 A three-dimensional structural diagram of the feeding mechanism provided by the present invention;

[0041] Figure 19 A three-dimensional structural schematic diagram of the collection mechanism provided by the present invention;

[0042] Figure 20 This is a three-dimensional structural diagram of the material feeding and handling device provided by the present invention. Detailed Implementation

[0043] This invention provides an injection molding production line. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0044] The present invention provides an injection molding production line, the structure of which is as follows: Figures 1-20As shown, it includes: a loading worktable 1, an injection molding worktable 2, and a receiving worktable 3 arranged in sequence. The loading worktable 1 is equipped with a corresponding left loading mechanism 10 and a right loading mechanism 20. A feeding mechanism 30 is provided above the left loading mechanism 10. The injection molding worktable 2 is equipped with an injection molding mechanism 40. The receiving worktable 3 is equipped with a corresponding unloading mechanism 50 and a collecting mechanism 60. The unloading mechanism 50 is located above the collecting mechanism 60.

[0045] The left feeding mechanism 10 includes a material roll rack 11 located on one side of the feeding workbench 1. The material roll rack 11 is provided with a feeding roll 12, and the feeding roll 12 is provided with a material strip 4. The material strip 4 is a roll of material, and a recycling roll is provided below the feeding roll 12 for recycling the packaging paper on the material strip 4. The loading workbench 1 is equipped with a conveying device 13 and a segmenting device 14 corresponding to the unloading coil 12. The conveying device 13 includes a conveying platform 131 located above the loading workbench 1. The conveying platform 131 is equipped with a corresponding conveying base 132 and a conveying top cover 133. A conveying longitudinal groove 134 is formed between the conveying base 132 and the conveying top cover 133. A pushing groove 135 parallel to the conveying longitudinal groove 134 is provided on the conveying top cover 133. A conveying cylinder 136 parallel to the conveying longitudinal groove 134 is provided on one side of the conveying longitudinal groove 134. A longitudinal pushing plate 138 is connected to the guide rod of the conveying cylinder 136 through an elastic connecting device 137. The pushing plate 138 is correspondingly arranged with the pushing groove 135. The pushing plate 138 of the conveying device 13 pushes the material belt 4 forward. The segmentation device 14 includes a vertical segmentation cylinder 141 located below the conveyor table 131. The guide rod of the segmentation cylinder 141 is connected to a vertical limiting component 143 via a connecting rod device 142. The limiting component 143 is located at the end of the conveying longitudinal trough 134 along the conveying direction. The limiting component 143 is provided with a limiting groove 144 corresponding to the conveying longitudinal trough 134. The end of the limiting groove 144 along the conveying direction is provided with a storage plate 145. The storage plate 145 is provided with a storage groove 146 corresponding to the limiting groove 144. The segmentation cylinder 141 drives the limiting component 143 to move upward, dividing the material belt 4 into material belt segments of predetermined length.

[0046] The upper right feeding mechanism 20 includes a feeding base plate 21 located on one side of the storage plate 145. The feeding base plate 21 has several feeding positioning rods 22 and lifting through holes 23. A feeding bin 24 is formed between the feeding positioning rods 22. Material segments 5, stamped by a stamping machine, are stacked inside the feeding bin 24. Both the material strip 4 and the material segments 5 have corresponding positioning holes. The feeding bin 24 is correspondingly arranged with the storage tank 146. A lifting drive device 25 is located below the feeding bin 24. The lifting drive device 25 has vertical lifting rods 26, which are correspondingly arranged with the lifting through holes 23.

[0047] The feeding mechanism 30 is located above the conveying device 13. The feeding mechanism 30 includes a first fixed platform 31 located above the conveying device 13. A first horizontal slide 32 is provided on the first fixed platform 31. A first horizontal slider 33 is provided on the first horizontal slide 32. A first connecting plate 34 is provided on the first horizontal slider 33. A first longitudinal slide 35 is located below the first connecting plate 34. A first longitudinal slider 36 is provided on the first longitudinal slide 35 and is connected to the first connecting plate 34. A feeding plate 39 is located at the front end of the first longitudinal slide 35. A left pick-and-place device 37 and a right pick-and-place device 38 are respectively located on both sides of the feeding plate 39. The left pick-and-place device 37 includes a vertical left pick-and-place cylinder 371 located on one side of the feeding plate 39. A horizontal upper left pick-and-place plate 372 is located at the lower end of the guide rod of the left pick-and-place cylinder 371. The two ends of the upper left pick-and-place plate 372 are connected by left linear bearings. 373 is slidably connected to a vertical left guide post 374. The bottom end of the left guide post 374 is provided with a horizontal lower left pick-and-place plate 375. The lower end of the lower left pick-and-place plate 375 is provided with a left suction cup 376, which is correspondingly positioned to the storage groove 146. The lower left pick-and-place plate 375 is provided with two corresponding left positioning posts 377. The right pick-and-place device 38 includes a vertical right pick-and-place cylinder 381 located on the other side of the feeding plate 39. The guide post 381... The lower end of the rod is provided with an upper right pick-up and drop plate 382. The two ends of the upper right pick-up and drop plate 382 are slidably connected to right guide posts through right linear bearings 383. The bottom end of the right guide post is provided with a horizontal lower right pick-up and drop plate 384. The lower end of the lower right pick-up and drop plate 384 is provided with a right suction cup 385. The right suction cup 385 is correspondingly set with the material storage bin 24. The lower right pick-up and drop plate 384 is provided with two corresponding right positioning posts 386. The left positioning post 377 is correspondingly set with the right positioning post 386.

[0048] The first horizontal slide 32 and the first vertical slide 35 can drive the left pick-and-place device 37 and the right pick-and-place device 38 to move horizontally or vertically, respectively. When the first horizontal slide 32 drives the right pick-and-place device 38 to move vertically, the material segment 5 can be picked up. Then, along with the material strip segment picked up by the left pick-and-place device 37 in the storage tank 146, the first vertical slide 35 drives the left pick-and-place device 37 and the right pick-and-place device 38 to feed the material towards the injection molding mechanism 40.

[0049] The injection molding mechanism 40 includes a lower mold 41 disposed on the injection molding worktable 2. The lower mold 41 is provided with a positioning hole 411 corresponding to the left positioning post 377. An injection device 42 is disposed above the lower mold 41, and an upper mold is disposed at the bottom end of the injection device 42 corresponding to the lower mold 41.

[0050] The lower mold 41 and the storage tank 146 can be correspondingly set. When the first longitudinal slide 35 drives the left pick-and-place device 37 and the right pick-and-place device 38 to the loading position, the entire left pick-and-place device 37 reaches directly above the lower mold 41. Usually, the lower mold 41 is provided with positioning pins corresponding to the positioning holes on the material strip 4 and the material strip 5. If the left positioning pin 377 is directly above the positioning hole 411, the guide rod of the left pick-and-place cylinder 371 extends downward, and the lower left pick-and-place plate 375 drives the left positioning pin 377 to move into the positioning hole 411 for complete engagement. The end of the left positioning pin 377 is tapered, which has a guiding function. If there is a significant deviation between the left positioning post 377 and the positioning hole 411, after the guide rod of the left pick-up cylinder 371 extends downwards, due to gravity, the distance between the upper left pick-up plate 372 and the lower left pick-up plate 375 remains unchanged. The lower left pick-up plate 375 drives the left positioning post 377 downwards until it is blocked by other positions near the positioning hole 411. At this point, the lower left pick-up plate 375 stops moving, while the upper left pick-up plate 372 continues to move downwards. Compared to the case where the left positioning post 377 has no positional deviation during loading, when the guide rod of the left pick-up cylinder 371 moves to its lowest position, the travel distance of the upper left pick-up plate 372 remains unchanged, while the travel distance of the lower left pick-up plate 375 decreases. The sensor between the upper left pick-up plate 372 and the lower left pick-up plate 375 detects the decrease in the travel distance of the lower left pick-up plate 375 and sends an alarm signal, immediately adjusting the loading position to prevent excessive deviation in the loading position from affecting the quality of the injection molded part. During the contact between the left positioning post 377 and the lower die 41, excessive squeezing wear will not occur between the left positioning post 377 and the lower die 41 due to the continued downward pressure of the guide rod of the left pick-and-place cylinder 371. The right pick-and-place device 38 also has high accuracy in loading position and will not wear down the lower die 41. Storage positioning holes corresponding to the left positioning post 377 can also be provided on the storage plate 145 to further improve the accuracy of the loading position.

[0051] The unloading mechanism 50 includes a second fixed platform 51 located above the receiving workbench 3. A second connecting plate 52 is located below the second fixed platform 51. A second longitudinal slide 53 is located at the bottom end of the second connecting plate 52. A second longitudinal slider 54 is located on the second longitudinal slide 53. The second longitudinal slider 54 is connected to the second connecting plate 52. A longitudinal unloading cylinder 55 is located at the rear end of the second longitudinal slide 54. A unloading pick-and-place device 56 is located at the lower end of the guide rod of the unloading cylinder 55. The unloading pick-and-place device 56 is correspondingly arranged with the lower mold 41.

[0052] The collection mechanism 60 includes a collection base plate 61 on the receiving workbench 3, a collection base support 62 on the collection base plate 61, and a plurality of collection positioning posts 63 on the collection base support 62. A collection chamber 64 is formed between the collection positioning posts 63, and the collection chamber 64 is correspondingly arranged with the unloading and picking device 56.

[0053] In the entire injection molding production line, the left loading mechanism 10 conveys and segments the material belts 4, the right loading mechanism 20 conveys the material segments 5 upwards one by one, the feeding mechanism 30 picks up the material belts 4 and material segments 5 and delivers them to the injection molding mechanism 40, and the unloading mechanism 50 transports the injection-molded parts 6 to the collection mechanism 60 for collection in subsequent processes. The entire production process requires no manual intervention, saving significant time spent on preparing raw materials, loading, unloading, and collecting products, thus improving production efficiency. Furthermore, it avoids product deformation caused by manual handling of parts, effectively ensuring the accuracy of the loading position and sequence, resulting in high-quality injection-molded products. It also avoids wear on the mold caused by the positioning workpiece during the loading process, giving the injection mold a longer service life and long-term positioning accuracy.

[0054] Specifically, the height of the limiting groove 144 gradually decreases along the conveying direction. The height of the front end of the limiting groove 144 is equal to or slightly higher than the thickness of the material strip 4, so that when the limiting component 143 moves upward, it will not damage the straightness of the material strip 4, thus ensuring the appearance and quality of the subsequent injection molded parts.

[0055] Specifically, one side of the conveying trough 134 is provided with a slide rail 134a parallel to the conveying trough 134. The elastic connecting device 137 includes a slider 137a on the guide rod of the conveying cylinder 136. The slider 137a is configured to cooperate with the slide rail 134a. The slider 137a is provided with a sliding fixed seat 137b. The sliding fixed seat 137b is provided with a fixed plate 137c. The fixed plate 137c is provided with a spring groove. The push plate 138 is rotatably connected to one end of the sliding fixed seat 137b. The upper end of the push plate 138 is provided with a spring 137d corresponding to the spring groove. The lower end of the push plate 138 is a push end 138a corresponding to the push groove. The front end of the push end 138a is a feeding surface 138b perpendicular to the feeding direction, and the rear end is an inclined surface 138c at an acute angle to the feeding surface. The conveying trough 134 is provided with a top material device 139 at the beginning of the feeding direction. The top material device 139 includes a top material mounting block 139a at the bottom of the conveying base 132. The top material mounting block 139a is provided with two lower top material spring grooves. A vertical top material block 139b is provided above the top material mounting block 139a. The conveying base 132 is provided with a through hole that cooperates with the top material block 139b. The bottom end of the top material block 139b is provided with an upper top material spring groove corresponding to the lower top material spring grooves. A compression spring 139c is provided between the upper top material spring groove and the lower top material spring groove. The top material block 139b is provided with a top material horizontal surface corresponding to the conveying trough 134.

[0056] When the guide rod of the conveying cylinder 136 extends, the pusher plate 138 moves forward, providing a forward frictional force to the conveyor belt 4, causing the conveyor belt 4 to move forward. Simultaneously, the conveyor belt 4 exerts a downward and backward force on the pusher plate 138, causing the pusher plate 138 to press the conveyor belt 4 forward. When the guide rod of the conveying cylinder 136 retracts, the conveyor belt 4 exerts an upward and forward force on the pusher plate 138, causing the pusher plate 138 to move away from the conveyor belt 4. This allows the conveyor belt 4 to continuously move forward as the guide rod of the conveying cylinder 136 repeatedly extends and retracts. The top-feeding device 139 ensures that the conveyor belt at the rear end of the conveying trough 134 is higher than the conveyor belt at the front end, and the conveyor belt 4 at the rear end of the pusher plate 138 is inclined. This correspondingly increases the force exerted by the conveyor belt 4 on the pusher plate 138, preventing situations where the pusher plate 138 fails to press the conveyor belt 4 firmly when the guide rod of the conveying cylinder 136 extends, or where the pusher plate 138 fails to completely release the conveyor belt 4 when the guide rod of the conveying cylinder 136 retracts, thus ensuring the continuity of the conveying process.

[0057] Specifically, the connecting rod device 142 includes a horizontal shaft fixing seat 142a located at the bottom of the conveyor table 131. The horizontal shaft fixing seat 142a has a vertical limiting through hole. A limiting fixing seat 142b passing through the conveyor table 131 is provided in the limiting through hole. A limiting component 143 is fixed on the limiting fixing seat 142b. A horizontal shaft 142c is provided at the lower end of the horizontal shaft fixing seat 142a. A connecting rod 142d is provided on the guide rod of the segmented cylinder 141. The middle of the connecting rod 142d is hinged to the horizontal shaft 142c, one end is hinged to the guide rod of the segmented cylinder 141, and the other end is hinged to the lower end of the limiting fixing seat 142b. Because the thickness of the strip 4 is very small, some are only 0.15 mm thick, when the strip 4 is segmented, the movement stroke of the limiting component 143 is very short. If the stroke is too long, the strip 4 will easily deform. The cylinder has high precision requirements. Through the lever principle, the movement stroke of the limiting component 143 can reach the predetermined requirements, thus ensuring the shape of the strip and the quality of the injection molded part.

[0058] Specifically, a segmented positioning device 147 is provided below the storage plate 145. The segmented positioning device 147 includes a vertical segmented positioning cylinder 147a located below the storage plate 145. A segmented positioning pin 147b is provided on the guide rod of the segmented positioning cylinder 147a. A plurality of positioning holes are evenly provided on the material strip 4. The segmented positioning pin 147b passes through the conveyor table 131 and the storage plate 145 and is correspondingly set with the positioning holes on the material strip 4. The segmented positioning device 147 segments the material strip 4 into segments of a set length, ensuring the consistency of the subsequently injection molded parts.

[0059] Specifically, the front and rear ends of the lower mold 41 are symmetrically arranged with respect to the center of the lower mold 41. This is a common arrangement of a multi-cavity mold structure for smaller injection molded parts. The storage tank 146 is arranged correspondingly to the lower mold 41. The unloading roll 12 and the segmenting device 14 are respectively provided in two sets. In this way, the two injection molded parts can be subjected to the corresponding injection process at the same time, which improves the production efficiency of injection molding.

[0060] Specifically, the material feeding and unloading device 56 includes a horizontal upper mounting plate 561 connected to the guide rod of the material feeding cylinder 55. The bottom end of the upper mounting plate 561 is provided with a sprue clamp 562. Both ends of the upper mounting plate 561 are provided with vertical connecting columns 564 through linear bearings 563. The bottom end of the connecting column 564 is provided with a lower mounting plate 565 parallel to the upper mounting plate 561. The lower mounting plate 565 is provided with a material feeding clamp 566, which can be a pneumatic gripper cylinder or a pneumatic suction cup. A sprue groove 567 is provided between the injection molding worktable 2 and the receiving worktable 3. When the material handling device 56 moves above the collection bin 64 under the drive of the second longitudinal slider 54, the guide rod of the material discharge cylinder 55 extends downward, and the upper mounting plate 561 and the lower mounting plate 565 move downward synchronously until the injection molded part 6 reaches the upper end of the collection positioning post 63. The sprue 7 is blocked by the positioning post 63, the lower mounting plate 565 remains stationary, and the upper mounting plate continues to move downward to the lowest position. The sprue clamp 562 clamps the sprue 7, and then the guide rod of the material discharge cylinder 55 retracts upward. Simultaneously, the unloading clamp 566 releases the injection molded part 6, and the upper mounting plate 561 drives the sprue 7 to move upward first, while the lower mounting plate 565 remains stationary. A height difference is created between the sprue 7 and the injection molded part 6, causing them to separate. Due to gravity, they fall onto the collecting base 62 and stack sequentially. During the next unloading process, as the unloading device 56 moves, when the sprue 7 reaches the position of the sprue chute 567, the sprue clamp 562 releases, thus collecting the sprue 7. A corresponding position sensor can be installed on the second longitudinal slider 54. This achieves automatic separation of the sprue and collection of the injection molded part without manual intervention, ensuring high production efficiency and good product quality.

[0061] Specifically, the lifting drive device 25 includes a lifting through motor 251 located below the material storage bin 24. A through screw 252 is mounted on the lifting through motor 251, and a lifting plate 253 is fixed to the top of the through screw 252. The lifting rod 26 is fixed to the lifting plate 253. The lifting through motor 251 can tolerate a large center position deviation. Guide rods are also provided on both sides of the through screw 252, making the right-side loading mechanism easy to install and providing good upward conveying stability and high positional accuracy.

[0062] A 180° rotating platform can be installed below the material base plate 21. Through two sets of rotatable material bins 24, more material segments 5 can be placed for injection molding, avoiding downtime to replace the material bins 24 and improving production efficiency.

[0063] Specifically, the bottom of the second fixed platform 51 is provided with a second horizontal slide table 57, and a second horizontal slider 58 is provided on the second horizontal slide table 57. The second connecting plate 52 is provided on the second horizontal slider 58. The collecting base plate 61 is evenly provided with a plurality of collecting bottom grooves 65. The collecting bottom support 62 is configured to cooperate with the collecting bottom grooves 65. One end of the collecting bottom groove 65 is provided with a material-blocking magnet 66. The first horizontal slide table 32 and the second horizontal slide table 57 are ball screw slide tables, which have the advantage of high positional accuracy. The first longitudinal slide table 35 and the second longitudinal slide table 53 are synchronous belt slide tables, which have the advantages of large stroke and fast movement speed. This structure facilitates the retrieval of collected injection molded parts 6 and saves the time of downtime to replace the collecting bottom support 62, thereby improving production efficiency.

[0064] In summary, the present invention includes a loading workbench 1, an injection molding workbench 2, and a receiving workbench 3 arranged sequentially. The loading workbench 1 is equipped with a corresponding left loading mechanism 10 and a right loading mechanism 20, with a feeding mechanism 30 located above the left loading mechanism 10. The injection molding workbench 2 is equipped with an injection molding mechanism 40, and the receiving workbench 3 is equipped with a corresponding unloading mechanism 50 and a collecting mechanism 60, with the unloading mechanism 50 located above the collecting mechanism 60. In the entire injection molding production line, the left loading mechanism 10 conveys and segments the material strip 4, the right loading mechanism 20 conveys the material segments 5 upwards one by one, the feeding mechanism 30 picks up the material strip 4 and material segments 5 and delivers them to the injection molding mechanism 40, and the unloading mechanism 50 transports the injection-molded parts 6 to the collecting mechanism 60 for collection, for use in subsequent processes. The entire production process requires no manual intervention, saving significant time spent on raw material preparation, loading, unloading, and product collection, thus improving production efficiency. Furthermore, it avoids product deformation caused by manual handling of parts, effectively ensuring the accuracy of loading position and sequence, resulting in high-quality injection molded products. It also prevents wear on the mold from the positioning workpiece during loading, extending the service life and long-term positioning accuracy of the injection mold.

[0065] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An injection molding production line, characterized in that, The application relates to a feeding device for a plastic bag production line. The feeding device comprises a feeding workbench, an injection molding workbench and a collecting workbench arranged in sequence, the feeding workbench is provided with corresponding left feeding mechanisms and right feeding mechanisms, the feeding workbench is provided with a feeding mechanism above the left feeding mechanisms, the injection molding workbench is provided with an injection molding mechanism, the collecting workbench is provided with corresponding discharging mechanisms and collecting mechanisms, and the discharging mechanisms are arranged above the collecting mechanisms. The left feeding mechanism comprises a material roll frame arranged on one side of the feeding workbench, the material roll frame is provided with a material roll, the material roll is provided with a material belt, the feeding workbench is provided with corresponding conveying devices and segmented devices corresponding to the material roll, the conveying devices comprise a conveying table arranged above the feeding workbench, the conveying table is provided with corresponding conveying bases and conveying top covers, a conveying longitudinal groove is formed between the conveying bases and the conveying top covers, the conveying top cover is provided with a pushing groove parallel to the conveying longitudinal groove, one side of the conveying longitudinal groove is provided with a conveying cylinder parallel to the conveying longitudinal groove, a pushing plate in the longitudinal direction is connected to the guide rod of the conveying cylinder through elastic connecting devices, the pushing plate is arranged corresponding to the pushing groove, the segmented devices comprise a vertical segmented cylinder arranged below the conveying table, the guide rod of the segmented cylinder is connected to a vertical limiting assembly through connecting rod devices, the limiting assembly is arranged at the end of the conveying longitudinal groove along the conveying direction, the limiting assembly is provided with a limiting groove corresponding to the conveying longitudinal groove, the end of the limiting groove along the conveying direction is provided with a storage plate, and the storage plate is provided with a storage groove corresponding to the limiting groove. The right feeding mechanism comprises a material placing bottom plate arranged on one side of the storage plate, the material placing bottom plate is provided with a plurality of material placing positioning rods and lifting through holes, the material placing positioning rods form a material placing bin, the material placing bin is arranged corresponding to the storage groove, and the material placing bin is provided with a lifting driving device below. The feeding mechanism is arranged above the conveying device, the feeding mechanism comprises a first fixed platform arranged above the conveying device, the first fixed platform is provided with a first horizontal sliding table, the first horizontal sliding table is provided with a first horizontal sliding block, the first horizontal sliding block is provided with a first connecting flat plate, the first connecting flat plate is provided with a first vertical sliding table below, the first vertical sliding table is provided with a first vertical sliding block, the first vertical sliding block is connected to the first connecting flat plate, the front end of the first vertical sliding table is provided with a feeding plate, and the feeding plate is provided with corresponding left taking and placing devices and right taking and placing devices on the two sides. The left taking and placing device comprises a vertical left taking and placing cylinder arranged on one side of the feeding plate, the lower end of the guide rod of the left taking and placing cylinder is provided with a horizontal left upper taking and placing plate, the two ends of the left upper taking and placing plate are slidably connected to vertical left guide columns through left linear bearings, the bottom end of the left guide column is provided with a horizontal left lower taking and placing plate, the lower end of the left lower taking and placing plate is provided with a left suction disc, the left suction disc is arranged corresponding to the storage groove, the left lower taking and placing plate is provided with two corresponding left positioning columns, the right taking and placing device comprises a vertical right taking and placing cylinder arranged on the other side of the feeding plate, the guide rod of the right taking and placing cylinder is provided with a right upper taking and placing plate, the two ends of the right upper taking and placing plate are slidably connected to right guide columns through right linear bearings, the bottom end of the right guide column is provided with a horizontal right lower taking and placing plate, the lower end of the right lower taking and placing plate is provided with a right suction disc, the right suction disc is arranged corresponding to the material placing bin, the right lower taking and placing plate is provided with two corresponding right positioning columns, and the left positioning columns and the right positioning columns are arranged corresponding to each other. The injection mechanism comprises a lower mold provided on an injection workbench, a positioning hole corresponding to the left positioning column is arranged on the lower mold, an injection device is arranged above the lower mold, the bottom end of the injection device is provided with an upper mold corresponding to the lower mold; The discharging mechanism comprises a second fixed platform arranged above the collecting workbench, a second connecting flat plate is arranged below the second fixed platform, the bottom end of the second connecting flat plate is provided with a second longitudinal sliding table, a second longitudinal sliding block is arranged on the second longitudinal sliding table, the second longitudinal sliding block is connected with the second connecting flat plate, the rear end of the second longitudinal sliding table is provided with a longitudinal discharging cylinder, the guide rod of the discharging cylinder is provided with a discharging taking and placing device at the lower end, and the discharging taking and placing device is arranged corresponding to the lower mold; The collecting mechanism comprises a collecting bottom plate arranged on the collecting workbench, a collecting bottom support is arranged on the collecting bottom plate, a plurality of collecting positioning columns are arranged on the collecting bottom support, and a collecting bin is formed between the collecting positioning columns, and the collecting bin is arranged corresponding to the discharging taking and placing device. The height of the limiting groove gradually decreases along the conveying direction; One side of the conveying longitudinal groove is provided with a sliding rail parallel to the conveying longitudinal groove, the elastic connecting device comprises a sliding block arranged on the guide rod of the conveying cylinder, the sliding block is arranged in cooperation with the sliding rail, a sliding fixing seat is arranged on the sliding block, a fixing plate is arranged on the sliding fixing seat, a spring groove is arranged on the fixing plate, one end of the sliding fixing seat is rotatably connected with the pushing plate, the upper end of the pushing plate is provided with a spring corresponding to the spring groove, and the lower end of the pushing plate is a pushing end corresponding to the pushing groove.

2. An injection molding line as claimed in claim 1, characterized in that: The conveying longitudinal groove is provided with a material lifting device at the beginning end in the feeding direction, the material lifting device comprises a material lifting mounting block arranged at the bottom end of the conveying base, two lower material lifting spring grooves are arranged on the material lifting mounting block, a vertical material lifting block is arranged above the material lifting mounting block, a through hole matched with the material lifting block is arranged on the conveying base, the bottom end of the material lifting block is provided with an upper material lifting spring groove corresponding to the lower material lifting spring groove, a compression spring is arranged between the upper material lifting spring groove and the lower material lifting spring groove, and the material lifting block is provided with a material lifting horizontal surface corresponding to the conveying longitudinal groove.

3. An injection molding line as claimed in claim 1, characterized in that: The connecting rod device comprises a horizontal shaft fixing seat arranged at the bottom end of the conveying table, a vertical limiting through hole is arranged on the horizontal shaft fixing seat, a limiting fixing seat penetrating through the conveying table is arranged in the limiting through hole, the limiting assembly is fixed on the limiting fixing seat, and the lower end of the horizontal shaft fixing seat is provided with a horizontal shaft.

4. An injection molding line as claimed in claim 1, characterized in that: The lower end of the horizontal shaft fixing seat is provided with a horizontal shaft.

5. An injection molding line as claimed in claim 1, characterized in that: The lower end of the horizontal shaft fixing seat is provided with a horizontal shaft. The lower end of the horizontal shaft fixing seat is provided with a horizontal shaft.

6. An injection molding line as claimed in claim 1, characterized in that: The blank taking and placing device comprises a horizontal upper mounting plate connected with a guide rod of a blanking cylinder, a nozzle clamp is arranged at the bottom end of the upper mounting plate, vertical connecting columns are arranged at both ends of the upper mounting plate through linear bearings, a lower mounting plate parallel to the upper mounting plate is arranged at the bottom end of the connecting column, and a blanking clamp is arranged on the lower mounting plate.

7. An injection molding line as claimed in claim 1, characterized in that: The lifting driving device comprises a lifting through motor arranged below the material placing bin, a through screw rod is arranged on the lifting through motor, a lifting plate is fixed at the top end of the through screw rod, and the lifting rod is fixed on the lifting plate.

8. An injection molding line as claimed in claim 1, characterized in that: The bottom end of the second fixing platform is provided with a second horizontal sliding table, the second horizontal sliding table is provided with a second horizontal sliding block, the second connecting plate is arranged on the second horizontal sliding block, a plurality of collecting bottom grooves are uniformly arranged on the collecting bottom plate, the collecting bottom support is arranged in cooperation with the collecting bottom groove, and a material blocking magnet is arranged at one end of the collecting bottom groove.

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