Automatic feeding equipment for injection molding machine

Abstract

The present invention proposes an automatic feeding device for an injection molding machine, comprising a frame, a feeding mechanism and a pulling mechanism, wherein an injection molding template is located between the feeding mechanism and the pulling mechanism, the feeding mechanism comprising a first mounting frame, an upper guide support positioning module, a feeding conveying module and an adjusting module, the adjusting module being connected to the feeding conveying module, the pulling mechanism comprising a second mounting frame, a tensioning module and a pulling module, the tensioning module being arranged between the pulling module and the injection molding template, a driving module being arranged between the first mounting frame, the second mounting frame and the frame, the driving module driving the first mounting frame and the second mounting frame to move forward and backward, aiming to solve the problem of large cost and production time consumption.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machine feeding, in particular to automatic feeding equipment for injection molding machines. Background Art

[0002] The hard encapsulated injection mold is also called Insert mold, which consists of two sets of rear (male) molds and one set of front (female) molds. The current production method of Insert mold type products is as follows:

[0003] The existing production technology of manually inserting sheet material strips (stamping products) and then performing injection molding will have different production quality. The unstable cycle of manual insertion will cause the production quality of injection molding to vary, and the production cycle is not fixed, so the output is also unstable.

[0004] In addition, in order to improve production efficiency, existing hard-coated injection molds mostly manually insert sheet material strips (stamping products) or build feeding equipment into the mold. Therefore, there will be special conditions. Each new machine model needs to be produced, which consumes a lot of cost and production time. Summary of the Invention

[0005] The present invention provides an automatic feeding device for an injection molding machine, aiming to solve the above problems and shortcomings.

[0006] The technical solution of the present invention is achieved as follows:

[0007] An automatic feeding device for an injection molding machine includes a frame, a feeding mechanism and a pulling mechanism, an injection molding template is located between the feeding mechanism and the pulling mechanism, the feeding mechanism includes a first mounting frame, an upper guide support positioning module, a feeding conveying module and an adjustment module, the adjustment module is connected to the feeding conveying module, the pulling mechanism includes a second mounting frame, a tensioning module and a pulling module, the tensioning module is arranged between the pulling module and the injection molding template, a detection module is arranged between the tensioning module and the pulling module, a lower guide support module is arranged below the pulling module, a driving module is arranged between the first mounting frame, the second mounting frame and the frame, and the driving module drives the first mounting frame and the second mounting frame to move forward and backward.

[0008] The driving module includes a servo motor, a ball screw and a ball nut, a supporting plate and a slider assembly. The output end of the servo motor is connected to the ball screw through a belt, and the ball screw is connected to the frame.

[0009] The feeding conveying module includes a conveying motor, a transmission shaft, a transmission wheel, a driven shaft and a driven wheel. The driven wheel and the transmission wheel are arranged correspondingly. The output end of the conveying motor is connected to the transmission shaft belt, and the driven shaft is connected to the adjustment module.

[0010] The adjustment module includes an adjustment cylinder and an adjustment plate. One end of the adjustment plate is connected to the adjustment cylinder, and the other end is connected to the feed conveying module. A limit rod is provided on one side of the adjustment plate, and a avoidance step is provided on the end of the adjustment plate close to the adjustment cylinder.

[0011] The tensioning module and the material pulling module both include a material strip clamping assembly. The tensioning module also includes a tensioning cylinder for driving the material strip clamping assembly to move up and down. The material pulling module includes a servo electric cylinder for driving the material strip clamping assembly to move.

[0012] The material strip clamping assembly includes a fixed block, a clamping block and a clamping cylinder that drives the clamping block and the fixed block to move. An elastic pressure plate is arranged between the fixed block and the clamping block. The length of the elastic pressure plate is greater than the length of the clamping block, and a material clamping space is formed between the elastic pressure plate and the fixed block.

[0013] A groove is provided on the fixing block, a protrusion is provided on the clamping block corresponding to the groove, a clamping groove is provided on both sides of the protrusion, and the elastic pressing plate is arranged in the clamping groove.

[0014] The material strip clamping assembly also includes a fixed beam, the fixed block is fixed on the fixed beam, the clamping cylinder is fixed at both ends of the fixed beam, and a clamping beam is also arranged between the clamping cylinder piston rods at both ends. The clamping block is fixed on the clamping beam, and the fixed beams of the tensioning module and the material pulling module are correspondingly fixed on the tensioning cylinder and the servo electric cylinder.

[0015] A linear guide rail, a guide bracket and a guide plate are set next to the servo electric cylinder. The two ends of the guide plate are connected to the clamping cylinder. Sliders are set corresponding to the guide plate and the linear guide rail. One side of the guide bracket is installed on the second mounting frame, and the other side is connected to the linear guide rail.

[0016] The upper guide support positioning module and the lower guide support module have the same structure and both include a guide positioning bracket and an arc-shaped support bracket. The guide positioning bracket is provided with a plurality of positioning guide wheels, and the arc-shaped support bracket is provided with an arc-shaped panel.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are:

[0018] 1. The present invention is installed at the corresponding position of the injection molding machine and the mold through a frame to achieve accurate automatic transportation, greatly improve production efficiency, and is easy to disassemble. The replacement of some parts can realize the transmission of different material belts.

[0019] 2. The feeding mechanism includes an upper guide support positioning module 2, a feeding conveying module 3 and an adjustment module 4, which are easy to disassemble. During operation, the material belt is conveyed by the lower feeding conveying module 3, and the feeding conveying module 3 conveys the material belt. The adjustment module 4 is used to adjust the spacing between the feeding conveying modules 3 and adjust the clamping degree according to the thickness of the material belt. The guide support module guides and positions the material belt to ensure accurate conveying of the material belt.

[0020] 3. The pulling mechanism includes a tensioning module, a pulling module and a guide support module. When the material belt is transmitted, the tensioning and pulling processes of the material belt are automatically completed. The material is pulled smoothly and the material belt will not deviate during the pulling process, which greatly improves the accuracy and efficiency of the material belt transmission. The tensioning module includes a driving cylinder, a fixed block, a clamping block and a clamping cylinder. The clamping cylinder clamps the material belt by driving the clamping block, and then the tensioning cylinder drives the material belt to move downward to ensure that the material belt is in a taut state, which facilitates the transportation of the material belt and ensures smooth transportation.

[0021] 4. A boss is provided on one side of the clamping block of the material strip clamping assembly, and mounting grooves are provided on both sides of the boss. An elastic clamping plate is provided in the mounting groove, and the length of the elastic clamping plate is greater than the length of the boss. When the material strip is conveyed, the material strip is placed between the boss and the fixed block, and the material strip is clamped by the clamping elastic blocks on both sides of the boss. The length of the clamping elastic block is greater than the length of the boss. This structure avoids direct contact between the material strip and the fixed block, thereby avoiding damage to the material strip during transportation.

[0022] 5. The material pulling module includes a servo electric cylinder drive that can achieve precise positioning and precise transmission. A guide support component is set to prevent the material belt from deviating during the transmission process. It guides and supports the material belt, realizes the precise transmission of the material belt, greatly improves production efficiency, and is easy to disassemble. By replacing some parts, different material belts can be transmitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the feeding mechanism structure;

[0026] Figure 3 Schematic diagram of the pulling mechanism structure;

[0027] Figure 4 for Figure 2 Schematic diagram of the local structure;

[0028] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of B;

[0029] Figure 6 It is a schematic diagram of the tensioning module structure;

[0030] Figure 7 It is a structural diagram of the fixed block and the clamping block;

[0031] Figure 8 This is a structural diagram of the material pulling module and the lower guide support module;

[0032] Figure 9 yes Figure 8 Schematic diagram of the enlarged structure of A;

[0033] Figure 10 It is a schematic diagram of the lower guide support module structure.

[0034] in:

[0035] Frame; 200, feeding mechanism; 300, pulling mechanism; 400, injection mold movable side plate; 500, material strip; 1. First material strip clamping assembly; 101, fixing block; 102, clamping block; 121, protrusion; 122, slot; 103, elastic pressure plate; 104, clamping cylinder; 105, fixing beam; 106, pressure beam; 2. Upper guide support positioning module; 3. Feeding and conveying module; 301, transmission shaft; 302, transmission wheel; 303, driven shaft; 304, conveying motor; 305, driven wheel;

[0036] 4. Adjustment module; 401. Adjustment cylinder; 402. Adjustment plate; 421. Avoidance step; 403. Limit rod; 5. Tensioning module; 501. Tensioning cylinder; 6. Pulling module; 601. Servo cylinder; 602. Linear guide rail; 603. Guide bracket; 604. Guide plate; 7. Detection module; 701. Detection sensor; 702. Sensor mounting bracket; 8. Lower guide support module;

[0037] 9. First drive module; 901. Servo motor; 902. Ball screw; 903. Ball nut; 905. First slider; 906. First slide rail; 941. Nut support bracket; 942. Screw connecting bracket;

[0038] 10. Second mounting bracket; 11. First mounting bracket; 12. Guide and positioning bracket; 13. Arc-shaped support bracket; 14. Positioning guide wheel; 15. Arc-shaped panel; 1501. Hook portion; 16. First drive module; 17. Second material strip clamping assembly; 18. Connecting rod; DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] See Figures 1-10 ,

[0041] An automatic feeding device for an injection molding machine includes a frame 100, a feeding mechanism 200 and a pulling mechanism 300, wherein the feeding mechanism 200 and the pulling mechanism 300 are located between the injection mold movable mold side plate 400, the feeding mechanism 200 includes a first mounting frame 11, an upper guide support positioning module 2, a feeding conveying module 3 and an adjustment module 4, the adjustment module 4 is connected to the feeding conveying module 3, the pulling mechanism 300 includes a second mounting frame 10, a tensioning module 5 and a pulling module 6, the tensioning module 5 is arranged between the pulling module 6 and the injection mold movable mold side plate 400, a detection module 7 is arranged between the tensioning module 5 and the pulling module 6, and a lower guide support module 8 is arranged below the pulling module.

[0042] The frame 100 includes an upper mounting plate, a lower mounting plate and an intermediate mounting plate for fixing the injection molding template. A first driving module 9 is arranged between the first mounting frame 11 and the upper mounting plate, and a second driving module 16 is arranged between the second mounting frame 10 and the lower mounting plate. The first driving module 9 drives the first mounting frame 11 to move forward and backward along the upper mounting plate, and the second driving module 16 drives the second mounting frame 10 to move forward and backward along the lower mounting plate.

[0043] Specifically, the embodiment is fixed on the injection molding machine through the frame 100, and the material belt 500 is installed. Figure 1 It passes through the upper guide support positioning module 2, the feeding and conveying module 3, the tensioning module 5, the pulling module 6 and the lower guide support module 8 in sequence. Before closing the mold, the material belt 500 is transported to the corresponding position of the movable mold side plate 400 of the injection mold through the coordinated action of the feeding and conveying module 3, the tensioning module 5 and the pulling module 6, and the mold is closed for injection molding and the cycle is repeated.

[0044] The first drive module 9 includes a servo motor 901, a ball screw 902, a ball nut 903, a support plate, and a slider assembly. The output end of the servo motor 901 is connected to the ball screw 902 via a belt, and the ball screw 902 is connected to the frame 100. The support plate is provided with a nut support bracket 941 and a screw rod connecting bracket 942. One end of the ball screw 902 is connected to the upper mounting plate and the other end is connected to the screw rod connecting bracket 942. The nut support bracket 941 and the ball nut 903 are provided with corresponding grooves. The slider assembly includes a first slider 905 provided on the upper mounting plate and a first slide rail 906 provided on the first mounting frame 11.

[0045] Specifically, when the feeding mechanism 200 needs to move forward and backward, the servo motor 901 drives the ball screw 902 to move forward and backward, further driving the upper mounting plate to move forward and backward along the first slide rail 906 on the first mounting frame 11, further moving the feeding mechanism 200 on the first mounting frame 11.

[0046] The feeding conveying module 3 includes a conveying motor 304, a transmission shaft 301, a transmission wheel 302, a driven shaft 303 and a driven wheel 305. The driven wheel 305 is arranged corresponding to the transmission wheel 302. The output end of the conveying motor 304 is connected to the transmission shaft 301 by a belt, and the driven shaft 303 is connected to the adjustment module 4.

[0047] The adjustment module 4 includes an adjustment cylinder 401 and an adjustment plate 402. One end of the adjustment plate 402 is connected to the adjustment cylinder 401, and the other end is connected to the feed conveyor module 3. A limit rod 403 is provided on one side of the adjustment plate 402, and a clearance step 421 is provided on the end of the adjustment plate 402 near the adjustment cylinder 401. The clearance step 421 is provided to avoid the adjustment cylinder 401 when the relative distance between the transmission shaft 301 and the driven shaft 303 is adjusted by the adjustment module 4.

[0048] One end of the adjustment plate 402 is connected to the telescopic rod of the adjustment cylinder 401, and the other end is connected to the driven shaft 303. A connecting shaft is set between the adjustment plate 402 and the first mounting frame 11, and the adjustment plate 402 can swing around the connecting shaft. A limiting rod 403 is set on one side of the adjustment plate 402 corresponding to the adjustment cylinder 401.

[0049] Specifically, the adjusting cylinder 401 drives the adjusting plate 402. One end of the adjusting plate 402 moves under the drive of the adjusting cylinder 401, and the other end is connected to the driven shaft 303, so that the two ends of the adjusting plate 402 move relative to each other along the connecting shaft, further adjusting the distance between the driven shaft 303 and the transmission shaft 301 to adapt to the material strip 500 of different widths and thicknesses.

[0050] The tensioning modules 5 each include a material strip clamping assembly 1 and a tensioning cylinder 501 for driving the material strip clamping assembly 1 to move up and down.

[0051] Specifically, after the feeding mechanism 200 completes feeding, the material belt clamping assembly 1 clamps the material belt 500. At this time, the tensioning module 5 operates to tighten the material belt 500 between the feeding mechanism 200 and the pulling mechanism 300, so that the material belt 500 is in a taut state, which is convenient for the subsequent pulling module 6 to pull the material.

[0052] The first strip clamping assembly 1 includes a fixed block 101, a clamping block 102, and a clamping cylinder 104 that drives the clamping block 102 and the fixed block 101. An elastic pressure plate 103 is disposed between the fixed block 101 and the clamping block 102. The elastic pressure plate 103 is longer than the clamping block 102, forming a material clamping space between the elastic pressure plate 103 and the fixed block 101. A groove is disposed on the fixed block 101, and a protrusion 121 is disposed on the clamping block 102 corresponding to the groove. Slots 122 are disposed on both sides of the protrusion 121, and the elastic pressure plate 103 is disposed within the slots 122.

[0053] Specifically, the material strip 500 is located between the groove and the protrusion 121 , and the surface of the material strip 500 is pressed by the elastic pressing plate 103 , thereby avoiding direct contact between the protrusion 121 and the upper surface of the material strip 500 and reducing damage during the transmission process.

[0054] The first material strip clamping assembly 1 also includes a fixed beam 105, the fixed block 101 is fixed on the fixed beam 105, the clamping cylinder 104 is fixed at both ends of the fixed beam 105, and a clamping beam 106 is also arranged between the piston rods of the clamping cylinders 104 at both ends. The clamping block 102 is fixed on the clamping beam 106, and the tensioning cylinder 501 is connected to the fixed beam 105 to drive the fixed beam 105 to move up and down, further driving the first material strip clamping assembly 1 to move up and down.

[0055] Specifically, the clamping cylinder 104 drives the clamping beam 106 to move forward and backward, further realizing the engagement between the clamping block 102 and the fixed block 101, and realizing the clamping and loosening of the material strip 500. After clamping the material strip 500, the tensioning cylinder 501 drives the fixed beam 105 to move, further tightening the material strip 500 downward, completing the tightening of the material strip 500. After completion, the clamping cylinder 104 moves to loosen the material strip 500. At this time, the tensioning cylinder 501 resets and prepares for the next action.

[0056] The pulling module 6 includes a servo electric cylinder 601 and a second material strip clamping assembly 17 connected to the servo electric cylinder 601. The second material strip clamping assembly 17 has the same structure as the first material strip clamping assembly 1, except that the fixed beam of the first material strip clamping assembly 1 is connected to the servo electric cylinder 601.

[0057] A linear guide rail 602, a guide bracket 603 and a guide plate 604 are set next to the servo electric cylinder 601. The two ends of the guide plate 604 are connected to the clamping cylinder 104. Sliders are set corresponding to the guide plate 604 and the linear guide rail 602. One side of the guide bracket 603 is installed on the second mounting frame 10, and the other side is connected to the linear guide rail 602.

[0058] Specifically, a servo electric cylinder 601 is used as a drive to achieve precise transmission. The second material strip clamping assembly 17 fixes the material strip 500. A linear guide rail 602 is set next to the servo electric cylinder 601. When the servo electric cylinder 602 drives the second material strip clamping assembly 17 to move up and down, smooth movement is ensured.

[0059] The second driving module 16 has the same structure as the first driving module 9 . Specifically, the lower mounting plate of the second driving module 16 moves forward and backward along the second mounting frame 10 .

[0060] Specifically, the detection module 7 includes a detection sensor 701 and a sensor mounting bracket 702 for sensing the position of the material strip 500 .

[0061] The upper guide support positioning module 2 and the lower guide support module 8 have the same structure and both include a guide positioning bracket 12 and an arc support bracket 13 . The guide positioning bracket 12 is provided with a plurality of positioning guide wheels 14 , and the arc support bracket 13 is provided with an arc panel 15 .

[0062] A plurality of connecting rods 18 are provided between the arc-shaped support frames 13. Both sides of the arc-shaped panel 15 are bent to form hook portions 1501. Both ends of the arc-shaped panel 15 are fixed to the connecting rods 18 through the hook portions 1501. This structure facilitates the disassembly of the arc-shaped panel 15.

[0063] Specifically, the upper guide support positioning module 2 and the lower guide support module 8 play a supporting and guiding role in the process of conveying the material belt 500.

[0064] Working principle:

[0065] Fix this embodiment on the injection molding machine through the frame 100, and install the material belt 500 Figure 1 It passes through the upper guide support positioning module 2, the feeding and conveying module 3, the tensioning module 5, the pulling module 6 and the lower guide support module 8 in sequence. Before closing the mold, the material belt 500 is transported to the corresponding position of the movable mold side plate 400 of the injection mold through the coordinated action of the feeding and conveying module 3, the tensioning module 5 and the pulling module 6, and the mold is closed for injection molding and the cycle is repeated.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic feeding device for an injection molding machine, characterized in that: It includes a frame, a feeding mechanism and a pulling mechanism, the feeding mechanism and the pulling mechanism are located between the movable die side plate of the injection mold, the feeding mechanism includes a first mounting frame, an upper guide support positioning module, a feeding conveying module and an adjusting module, the adjusting module is connected to the feeding conveying module, the pulling mechanism includes a second mounting frame, a tensioning module and a pulling module, the tensioning module is arranged between the pulling module and the movable die side plate of the injection mold, a detection module is arranged between the tensioning module and the pulling module, a lower guide support module is arranged below the pulling module, a driving module is arranged between the first mounting frame, the second mounting frame and the frame, and the driving module drives the first mounting frame and the second mounting frame to move forward and backward; The tensioning module and the material pulling module both include a material strip clamping assembly, the tensioning module also includes a tensioning cylinder for driving the material strip clamping assembly to move up and down, and the material pulling module includes a servo electric cylinder for driving the material strip clamping assembly to move; The material strip clamping assembly includes a fixed block, a clamping block and a clamping cylinder for driving the clamping block and the fixed block to move, an elastic pressure plate is provided between the fixed block and the clamping block, the length of the elastic pressure plate is greater than the length of the clamping block, and a material clamping space is formed between the elastic pressure plate and the fixed block; a groove is provided on the fixed block, a protrusion is provided on the clamping block corresponding to the groove, and slots are provided on both sides of the protrusion, and the elastic pressure plate is provided in the slot; when the material strip is conveyed, the material strip is placed between the protrusion and the fixed block, and the material strip is clamped by the elastic pressure blocks on both sides of the protrusion; The feeding conveying module includes a conveying motor, a transmission shaft, a transmission wheel, a driven shaft and a driven wheel. The driven wheel and the transmission wheel are arranged correspondingly. The output end of the conveying motor is connected to the transmission shaft belt, and the driven shaft is connected to the adjustment module.

2. The automatic feeding equipment according to claim 1, characterized in that: The driving module includes a servo motor, a ball screw and a ball nut, a supporting plate and a slider assembly. The output end of the servo motor is connected to the ball screw through a belt, and the ball screw is connected to the frame.

3. The automatic feeding equipment according to claim 1, characterized in that: The adjustment module includes an adjustment cylinder and an adjustment plate. One end of the adjustment plate is connected to the adjustment cylinder, and the other end is connected to the feed conveying module. A limit rod is provided on one side of the adjustment plate, and a avoidance step is provided on the end of the adjustment plate close to the adjustment cylinder.

4. The automatic feeding equipment according to claim 1, characterized in that: The material strip clamping assembly also includes a fixed beam, the fixed block is fixed on the fixed beam, the clamping cylinder is fixed at both ends of the fixed beam, and a clamping beam is also arranged between the clamping cylinder piston rods at both ends. The clamping block is fixed on the clamping beam, and the fixed beams of the tensioning module and the material pulling module are correspondingly fixed on the tensioning cylinder and the servo electric cylinder.

5. The automatic feeding device according to claim 4, characterized in that: A linear guide rail, a guide bracket and a guide plate are set next to the servo electric cylinder. The two ends of the guide plate are connected to the clamping cylinder. Sliders are set corresponding to the guide plate and the linear guide rail. One side of the guide bracket is installed on the second mounting frame, and the other side is connected to the linear guide rail.

6. The automatic feeding device according to claim 1, characterized in that: The upper guide support positioning module and the lower guide support module have the same structure and both include a guide positioning bracket and an arc-shaped support bracket. The guide positioning bracket is provided with a plurality of positioning guide wheels, and the arc-shaped support bracket is provided with an arc-shaped panel.

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