Automatic feeding device and system of injection molding machine for oral soluble film candy production

Abstract

The invention relates to the technical field of oral soluble film production, and discloses an automatic feeding device and system of an injection molding machine for oral soluble film candy production, the automatic feeding device comprises the injection molding machine, a base and a feeding box are fixedly mounted on the injection molding machine, a feeding assembly is mounted on the base, a weighing assembly is mounted on the feeding box, and the weighing assembly is mounted on the feeding box. The weighing assembly is used for feeding the raw materials into the feeding box after the raw materials reach the set weight; the weighing assembly comprises a weighing table, a charging barrel, a controller, a second motor and a fan-shaped block; the feeding assembly comprises a hopper and a plurality of feeding boxes. Through the arrangement of a weighing assembly, a weighing table can continuously obtain weight data of raw materials while a charging barrel continuously collects the raw materials, when the weight of the raw materials reaches a set value, fan-shaped blocks can extrude the raw materials into a feeding box in a rotating extrusion mode, and the efficiency of the raw materials entering the feeding box can be improved through the extrusion mode; and the operation progress is accelerated.

Description

Technical Field

[0001] This invention relates to the field of oral soluble film production technology, specifically to an automatic feeding device and system for an injection molding machine used in the production of oral soluble film candies. Background Technology

[0002] Orally dissolving film candies are a new type of confectionery product. They primarily use an edible film as a carrier, then incorporate sweeteners, flavorings, colorings, and functional ingredients. They offer advantages such as rapid dissolution upon entering the mouth without chewing, a delicate texture, and convenient consumption. Injection molding machines are one of the core pieces of equipment in the production of orally dissolving film products. Existing injection molding machines, when producing orally dissolving film candies, also require a feeding device to input the raw materials into the machine for subsequent production.

[0003] Currently, most oral dissolving film candy raw materials are added to the injection molding machine manually. However, manual feeding has limited control over the accuracy of raw material quantity, which can easily lead to quantity deviations during feeding, resulting in insufficient or excessive raw materials in the production batch. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic feeding device and system for injection molding machines used in the production of oral dissolving film candies in order to solve the above-mentioned problems and overcome the defects of the prior art, as detailed below.

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

[0006] This invention provides an automatic feeding device for an injection molding machine used in the production of oral dissolving film candies. The device includes an injection molding machine, a base and a feeding box fixedly mounted on the machine. A feeding component is mounted on the base, and a weighing component is mounted on the feeding box. The weighing component is connected to the feeding component. The feeding component feeds raw materials into the weighing component, and the weighing component feeds the raw materials into the feeding box after the raw materials reach a set weight. The weighing component includes a weighing platform, a material cylinder, a controller, a second motor, and a sector block. The weighing platform is fixedly mounted on the top of the feeding box, and a second support is fixedly mounted on the weighing platform. The material cylinder is fixedly mounted on the second support, and the sector block is rotatably mounted inside the material cylinder. When the sector block rotates, it can squeeze the raw materials in the material cylinder into the feeding box through compression. The feeding component includes a hopper and multiple feeding boxes, which can quantitatively extract raw materials from the hopper and transport them to the material cylinder.

[0007] Preferably, the controller is fixedly installed on the top of the feed box, and the second motor is fixedly installed on the second bracket. The controller can start the second motor after the weighing platform detects that the weight has reached the set value. The output end of the second motor is fixedly connected to a rotating shaft. The rotating shaft is rotatably connected to the material cylinder and the sector block. A push block is fixedly connected to the rotating shaft. A sector groove is opened inside the sector block. The push block is located in the sector groove of the sector block. The top and bottom of the material cylinder are respectively provided with an inlet and an outlet. A baffle is fixedly connected to the sector block. When the baffle moves, it can pass through and block the inlet and outlet of the material cylinder.

[0008] Preferably, a limiting block is fixedly connected to the inner wall of the material cylinder, and the sector block abuts against the limiting block when it moves. A second connecting pipe is fixedly connected to the outlet at the bottom of the material cylinder, and the second connecting pipe communicates with the top of the feed box.

[0009] Preferably, the inlet of the material cylinder is hinged with a hinged door, and the sector block and baffle can contact the hinged door and drive it to close when moving. A pressure block is slidably connected inside the sector block, and a connecting rod is hinged between the pressure block and the push block. A leaf spring is fixedly connected between the push block and the inner wall of the sector groove of the sector block. The pressure block can be inserted into the outlet of the material cylinder and the second connecting pipe during the movement.

[0010] Preferably, a first bracket is fixedly installed on the base, the hopper is fixedly installed on the first bracket, a turntable is rotatably connected to the bottom of the hopper, and multiple feeding boxes are fixedly installed on the turntable. A drive unit for driving the turntable to rotate is installed on the first bracket. A column is fixedly installed on the base, and the top of the column is rotatably connected to the turntable. A slider is slidably connected inside the feeding box, and an abutment rod is fixedly connected to the slider. The abutment rod passes through the feeding box and is slidably connected to the feeding box. A first spring is fixedly connected between the inner wall of the feeding box and the slider. A cam is fixedly connected to the outer wall of the column. The cam has a protrusion, and the protrusion of the cam is located above the material cylinder. When the abutment rod moves, it slides along the outer wall of the cam. When the abutment rod slides to the protrusion of the cam, it can drive the slider to move away from the cam. The top and bottom of the feeding box are respectively provided with an inlet and an outlet. One-way valve plates are installed at the inlet and outlet of the feeding box.

[0011] Preferably, the inlet of the feeding box is connected to the inside of the hopper, a base plate is fixedly connected to the outer wall of the column, the bottom of the feeding box is in sliding contact with the top of the base plate, a through groove is provided on the base plate, a first connecting pipe is fixedly connected to the bottom of the through groove of the base plate, and the bottom of the first connecting pipe is connected to the inlet of the material cylinder.

[0012] Preferably, the drive unit includes a first motor, which is fixedly mounted on a first bracket. A gear is fixedly connected to the output end of the first motor. A gear ring is fixedly connected to the bottom of the turntable, and the gear ring meshes with the gear. A protective cover is fixedly connected to the outer wall of the hopper, and both the gear ring and the gear are located inside the protective cover.

[0013] Preferably, the feeding assembly further includes a mixing section, which includes a central shaft and two fixed rods. The central shaft is fixedly installed on the top surface of the turntable, and both fixed rods are fixedly installed on the central shaft. A rotating rod is movably sleeved at the end of each fixed rod away from the central shaft. Multiple stirring rods are connected to the outer wall of the rotating rod. An annular groove is provided on the fixed rod. A sliding tongue is fixedly connected to the inner wall of the rotating rod, and the sliding tongue is slidably connected to the annular groove. A second spring is fixedly connected to the end of the fixed rod that is sleeved with the rotating rod. The end of the second spring away from the fixed rod slides against the inner wall of the rotating rod. A wave-shaped ring is fixedly connected to the inner wall of the hopper. The end of the rotating rod away from the fixed rod slides in contact with the wave-shaped ring. When the rotating rod revolves with the fixed rod, it can extend and retract along the undulations of the wave-shaped ring on the fixed rod. During the extension and retraction movement of the rotating rod, it can reciprocate by utilizing the cooperation of the sliding tongue and the annular groove.

[0014] Preferably, a plurality of vibrating rods are fixedly connected to the turntable, and the plurality of vibrating rods are respectively located above a plurality of feeding boxes. When the stirring rod moves, it can contact the vibrating rods and drive the vibrating rods to vibrate.

[0015] An automatic feeding system for an injection molding machine used in the production of oral dissolving film candies includes a precision metering module, which is installed in a controller. The precision metering module includes a high-precision sensor and a control system. The high-precision sensor is installed inside a weighing platform, and the control system is used to control a first motor and a second motor.

[0016] The beneficial effects are:

[0017] 1. The automatic feeding device for the injection molding machine used in the production of melt-in-place candy, through the setting of the weighing component, enables the weighing platform to continuously acquire the weight data of the raw materials while the material cylinder continuously collects them. When the weight of the raw materials reaches the set value, the sector block can squeeze the raw materials into the feeding box by rotating and pressing. The pressing method can speed up the efficiency of the raw materials entering the feeding box, thereby speeding up the operation progress. Through the setting of the pressing block, after the sector block is squeezed into place, the pressing block can push the remaining raw materials in the second connecting pipe downward by moving downward, so as to avoid a small amount of raw materials adhering to the inner wall of the second connecting pipe and affecting the accuracy of the amount of raw materials entering the feeding box.

[0018] 2. The automatic feeding device of the injection molding machine for dissolving film candy production, through the setting of the feeding components, enables multiple sliders to take turns drawing raw materials from the hopper during rotation and then injecting the raw materials into the cylinder through the first connecting pipe, achieving the technical effect of batch quantitative feeding, improving the accuracy of feeding. Compared with gravity flow, the method of extraction and extrusion can effectively speed up the feeding progress of raw materials, while ensuring the accuracy of each feeding.

[0019] 3. The automatic feeding device of the injection molding machine for oral soluble candy production, through the setting of the mixing section, enables the rotating rod and the stirring rod above it to continuously stir the raw materials in the hopper during the revolution, so as to maintain good uniformity of the raw materials and avoid the separation and sedimentation of the raw materials; through the cooperation of the annular inclined groove and the sliding tongue, the rotating rod can also reciprocate and rotate on its own axis while following the revolution of the fixed rod, thereby increasing the movement amplitude of the stirring rod above the rotating rod, thereby increasing the contact area between the stirring rod and the raw materials, and thus further improving the mixing effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the feeding component structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the weighing component structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the barrel structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the second motor structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the sector block structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the pressing block structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the hopper structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the drive unit structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the base plate structure of the present invention;

[0031] Figure 11 This is a schematic diagram of the feeding box structure of the present invention;

[0032] Figure 12 This is a schematic diagram of the one-way valve plate structure of the present invention;

[0033] Figure 13 This is a schematic diagram of the mixing section structure of the present invention;

[0034] Figure 14 This is a schematic diagram of the rotating rod structure of the present invention.

[0035] The annotations in the attached figures are explained as follows:

[0036] 1. Injection molding machine; 2. Base; 3. Feed box;

[0037] 4. Feeding assembly; 41. First support; 42. Hopper; 43. Turntable; 44. Column; 45. Feeding box; 46. Slider; 47. Abutment rod; 48. First spring; 49. One-way valve; 410. Cam; 411. Base plate; 412. First connecting pipe; 413. Protective cover;

[0038] 5. Drive unit; 51. First motor; 52. Gear; 53. Gear ring;

[0039] 6. Mixing section; 61. Central shaft; 62. Fixed rod; 63. Rotating rod; 64. Annular inclined groove; 65. Sliding tongue; 66. Second spring; 67. Wave ring; 68. Stirring rod; 69. Vibrating rod;

[0040] 7. Weighing assembly; 71. Weighing platform; 72. Second support; 73. Material cylinder; 74. Rotating shaft; 75. Controller; 76. Second motor; 77. Push block; 78. Sector block; 79. Baffle; 710. Limit block; 711. Flip door; 712. Connecting rod; 713. Pressure block; 714. Leaf spring; 715. Second connecting pipe. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0042] Example 1

[0043] In the current process of feeding raw materials for oral dissolving film candies, most of the raw materials are manually added to the injection molding machine. However, manual feeding has limited control over the accuracy of the raw material quantity, which can easily lead to quantity deviations during feeding, resulting in insufficient or excessive raw materials in the production batch. This embodiment is invented to solve the above problems.

[0044] Please see Figures 1-7 An automatic feeding device for an injection molding machine used in the production of oral soluble film candy includes an injection molding machine 1, a base 2 and a feeding box 3 fixedly installed on the injection molding machine 1, the base 2 and the feeding box 3 being connected. The injection molding machine 1 is a commonly used device for producing oral soluble film candy, so its specific structure and working principle will not be described in detail. A feeding component 4 is installed on the base 2, and a weighing component 7 is installed on the feeding box 3. The weighing component 7 is connected to the feeding component 4. The feeding component 4 feeds the raw materials into the weighing component 7, and the weighing component 7 feeds the raw materials into the feeding box 3 after the raw materials reach the set weight.

[0045] The weighing assembly 7 includes a weighing platform 71, a material cylinder 73, a controller 75, a second motor 76, and a sector block 78. The weighing platform 71 is fixedly installed on the top of the feed box 3, and a second support 72 is fixedly installed on the weighing platform 71. The material cylinder 73 is fixedly installed on the second support 72, and the sector block 78 is rotatably installed inside the material cylinder 73. When the sector block 78 rotates, it can squeeze the raw material in the material cylinder 73 into the feed box 3 by compression. The material cylinder 73 is used to store raw materials. After a batch of raw materials is put into the material cylinder 73, the feeding assembly 4 feeds the raw materials into the material cylinder 73 in batches and quantities. The weighing assembly 7 weighs the raw materials. When the weight of the raw materials in the material cylinder 73 reaches the set value, the feeding assembly 4 stops feeding, and the sector block 78 squeezes the raw materials in the material cylinder 73 into the feed box 3.

[0046] Furthermore, please refer to Figures 4-7 The controller 75 is fixedly installed on the top of the feed box 3. The weighing platform 71 is connected to the controller 75 through a wire. The weighing platform 71 can transmit the weight parameters to the controller 75. The second motor 76 is fixedly installed on the second bracket 72. The controller 75 can start the second motor 76 after the weighing platform 71 detects that the weight has reached the set value.

[0047] At the same time, the feeding component 4 stops feeding. The output end of the second motor 76 is fixedly connected to a rotating shaft 74, which is rotatably connected to the material cylinder 73 and the sector block 78. A push block 77 is fixedly connected to the rotating shaft 74. The sector block 78 has a sector groove inside, and the push block 77 is located in the sector groove of the sector block 78. The top and bottom of the material cylinder 73 have an inlet and an outlet, respectively. A baffle 79 is fixedly connected to the sector block 78. When the baffle 79 moves, it can pass through and block the inlet and outlet of the material cylinder 73. After the second motor 76 starts, it drives the rotating shaft 74 to rotate. Shaft 74 rotates clockwise, which drives push block 77 to rotate synchronously. Push block 77 can transmit thrust to sector block 78, causing sector block 78 to rotate clockwise. Before sector block 78 rotates, baffle 79 blocks the outlet of cylinder 73. At this time, the raw material in cylinder 73 continues to accumulate. When the total amount of raw material reaches the set value, sector block 78 starts to rotate clockwise, and baffle 79 rotates synchronously with sector block 78, causing baffle 79 to disengage from the outlet of cylinder 73, so that the raw material in cylinder 73 is discharged from the outlet of cylinder 73.

[0048] In addition, please see Figures 5-7 A limiting block 710 is fixedly connected to the inner wall of the material cylinder 73. The limiting block 710 is made of elastic material and is horizontally limited within the inner wall of the material cylinder 73. The limiting block 710 can only deform in the vertical direction and not in the horizontal direction. A gap can be opened between the bottom of the limiting block 710 and the inner wall of the material cylinder 73, and a baffle 79 can be inserted into the gap at the bottom of the limiting block 710. When the sector block 78 moves, it abuts against the limiting block 710. The area between the upper right side wall of the sector block 78 and the limiting block 710 is the material storage space inside the material cylinder 73 (e.g., Figure 6 As shown, a second connecting pipe 715 is fixedly connected to the outlet at the bottom of the material cylinder 73. The second connecting pipe 715 is connected to the top of the feed box 3. The second connecting pipe 715 has a certain degree of extensibility and elasticity, and will not affect the overall weighing effect of the material cylinder 73. As the sector block 78 rotates clockwise, the upper right side wall of the sector block 78 continuously approaches the limiting block 710, causing the storage space in the material cylinder 73 to continuously shrink. This achieves the technical effect that the sector block 78 can continuously squeeze the raw material by rotating, so that the raw material is squeezed from the outlet of the material cylinder 73 into the second connecting pipe 715. When the sector block 78 rotates clockwise until it contacts the limiting block 710, the storage space is completely compressed, so that all the raw material in the material cylinder 73 is squeezed into the second connecting pipe 715, and then enters the feed box 3 through the second connecting pipe 715 to realize the feeding of the injection molding machine 1.

[0049] Before the sector block 78 begins to rotate clockwise, the baffle 79 is inserted into the gap at the bottom of the limiting block 710. At this time, the baffle 79 acts to seal the outlet of the material cylinder 73. As the sector block 78 rotates clockwise, the baffle 79 gradually disengages from the limiting block 710. After the baffle 79 disengages from the limiting block 710, the limiting block 710 uses its own elasticity to fill downwards, thereby sealing its bottom gap. This prevents the material in the storage space from entering the gap at the bottom of the limiting block 710 when it is squeezed. Since the limiting block 710 is limited and cannot deform horizontally, the material will not cause the limiting block 710 to deform horizontally and open its bottom gap when it applies force to the limiting block 710, thus ensuring the sealing between the limiting block 710 and the inner wall of the material cylinder 73. After the sector block 78 and the baffle 79 are reset counterclockwise, the end of the baffle 79 away from the sector block 78 is chamfered (e.g., Figure 6 As shown), when the baffle 79 comes into contact with the limiting block 710 again, the baffle 79 uses its chamfer to insert itself into the gap at the bottom of the limiting block 710 again.

[0050] In addition, please see Figures 7-8 The inlet of the material cylinder 73 is hinged with a hinged door 711. When the sector block 78 and the baffle 79 move, they can contact the hinge door 711 and drive the hinge door 711 to close. After the sector block 78 rotates clockwise, it directly contacts the hinge door 711 and pushes the hinge door 711 upward, so that the hinge door 711 blocks the inlet of the material cylinder 73. At this time, the hinge door 711 is closed, so that the inlet of the material cylinder 73 cannot be fed temporarily. The inside of the sector block 78 is slidably connected with a pressure block 713. The pressure block 713 is hinged with a connecting rod 712. The push block 77 is fixedly connected to the inner wall of the sector groove of the sector block 78 with a leaf spring 714. 3. During the movement, it can be inserted into the outlet of the material cylinder 73 and the second connecting pipe 715; when the push block 77 starts to rotate clockwise, the push block 77 applies a pushing force to the pressure block 713 through the connecting rod 712, and the pressure block 713 can move away from the rotating shaft 74. Before moving to the outlet of the material cylinder 73, the pressure block 713 always abuts against the inner wall of the material cylinder 73. When the pressure block 713 passes through the flip door 711, the pressure block 713 also abuts against the flip door 711, and the pressure block 713 transmits the pushing force applied by the push block 77 to the sector block 78, so that the sector block 78 can rotate clockwise with the rotating shaft 74.

[0051] When the pressure block 713 moves to above the outlet of the material cylinder 73, the sector block 78 abuts against the limit block 710 and cannot continue to rotate clockwise (e.g. Figure 7As shown), the rotating shaft 74 continues to rotate, causing the pusher 77 to continue to press the pressure block 713 through the connecting rod 712, causing the pressure block 713 to move towards the outlet of the material cylinder 73 and into the second connecting pipe 715. During this process, the pressure block 713 can squeeze the raw material temporarily remaining in the outlet of the material cylinder 73 and the second connecting pipe 715 into the feed box 3, avoiding the small amount of raw material adhering to the inner wall of the second connecting pipe 715 and affecting the accuracy of the amount of raw material entering the feed box 3. When the pressure block 713 moves down to the position, the second motor 76 stops, and then the second motor 76 drives the rotating shaft 74 to rotate counterclockwise, and the pusher 77 rotates counterclockwise accordingly. At this time, the pressure block 713 and the outlet of the material cylinder 73 can be regarded as a vertical sliding connection. The pressure block 713 can only slide vertically temporarily due to the limiting effect of the outlet of the material cylinder 73. Therefore, when the pusher 77 rotates counterclockwise, it first applies an upward pushing force to the pressure block 713 through the connecting rod 712, causing the pressure block 713 to move up until it is separated from the outlet of the material cylinder 73.

[0052] After the pressure block 713 disengages from the outlet of the material cylinder 73, the push block 77 contacts the sector groove of the sector block 78 and applies a pushing force, causing the sector block 78 to rotate counterclockwise and reset. During this process, the leaf spring 714 provides elastic assistance, using its elasticity to quickly bring the push block 77 into contact with the sector groove of the sector block 78. As the sector block 78 rotates counterclockwise and resets, the storage space inside the material cylinder 73 gradually recovers. When the sector block 78 has completely reset, the second motor 76 stops rotating, and the sector block 78 disengages from the hinged door 711. The hinged door 711 then flips down under its own weight, opening the inlet of the material cylinder 73. Subsequently, the feeding assembly 4 continues to feed, allowing the raw material to enter through the inlet of the material cylinder 73. In the storage space of the material cylinder 73, the weighing component 7 is set so that while the material cylinder 73 continuously collects raw materials, the weighing platform 71 can continuously acquire the weight data of the raw materials. When the weight of the raw materials reaches the set value, the sector block 78 can squeeze the raw materials into the feed box 3 by rotating and squeezing. The squeezing method can speed up the efficiency of the raw materials entering the feed box 3, thereby speeding up the operation progress. The pressure block 713 is set so that after the sector block 78 squeezes to the position, the pressure block 713 can push the raw materials remaining in the second connecting pipe 715 downward by moving downward, so as to avoid a small amount of raw materials adhering to the inner wall of the second connecting pipe 715 and affecting the accuracy of the amount of raw materials entering the feed box 3.

[0053] Example 2

[0054] Based on the above embodiments, most existing methods for feeding oral dissolving film raw materials adopt gravity flow. Since oral dissolving film raw materials are usually quite viscous, if the flow cross-sectional area of ​​the raw material is large, it is difficult to control the accuracy of the quantity. If the flow cross-sectional area of ​​the raw material is small, the raw material will flow slowly, which will affect the production efficiency. Therefore, this embodiment is invented to solve the above problems.

[0055] Please see Figures 8-12The feeding assembly 4 includes a hopper 42 and multiple feeding boxes 45. The feeding boxes 45 can quantitatively extract raw materials from the hopper 42 and convey them to the material cylinder 73. A first support 41 is fixedly installed on the base 2. The hopper 42 is fixedly installed on the first support 41, and a turntable 43 is rotatably connected to the bottom of the hopper 42. Multiple feeding boxes 45 are all fixedly installed on the turntable 43. A drive unit 5 for driving the turntable 43 to rotate is installed on the first support 41. A column 44 is fixedly installed on the base 2, and the top of the column 44 is rotatably connected to the turntable 43. The feeding boxes 45... A slider 46 is slidably connected to the inner part of the feeding box 45. An abutment rod 47 is fixedly connected to the slider 46. The abutment rod 47 passes through the feeding box 45 and is slidably connected to the feeding box 45. A first spring 48 is fixedly connected between the inner wall of the feeding box 45 and the slider 46. A cam 410 is fixedly connected to the outer wall of the column 44. The cam 410 has a protruding ridge, which is located above the material cylinder 73. When the abutment rod 47 moves, it slides along the outer wall of the cam 410. When the abutment rod 47 slides to the protruding ridge of the cam 410, it can drive the slider 46 to move away from the cam 410. The top and bottom of the feeding box 45 are respectively provided with an inlet and an outlet. One-way valve plates 49 are installed at the inlet and outlet of the feeding box 45. The two one-way valve plates 49 ensure that the raw material in the feeding box 45 can only flow unidirectionally from top to bottom.

[0056] When feeding begins, the drive unit 5 drives the turntable 43 to rotate, and the turntable 43 drives multiple feeding boxes 45 to rotate. The raw material in the hopper 42 can enter the feeding box 45. During the rotation of the feeding box 45, the abutment rod 47 on the feeding box 45 slides along the outer wall of the cam 410. When the feeding box 45 moves above the inlet of the cylinder 73, the abutment rod 47 contacts the protrusion of the cam 410, causing the abutment rod 47 to move away from the cam 410 along the protrusion of the cam 410. When the abutment rod 47 moves, it drives the slider 46 to move synchronously. When the slider 46 moves away from the cam 410, the one-way valve plate 49 at the inlet of the feeding box 45 closes, and the one-way valve plate 49 at the outlet of the feeding box 45 opens, so that the raw material in the feeding box 45 is squeezed downward through the outlet. When the slider 46 moves to the position away from the cam 410, the raw material in the feeding box 45 is completely squeezed out.

[0057] When the contact rod 47 disengages from the cam 410, the slider 46 moves towards the cam 410 and resets using the elastic force of the first spring 48. As the slider 46 moves towards the cam 410, the one-way valve 49 at the discharge port of the feeding box 45 closes, and the one-way valve 49 at the suction port of the feeding box 45 opens. The raw material in the hopper 42 is drawn into the feeding box 45 through the suction port. After the slider 46 is completely reset, the feeding box 45 is filled with raw material. Therefore, when the slider 46 moves towards the cam 410, it can draw raw material from the hopper 42. When the slider 46 moves away from the cam 410, it can squeeze the raw material in the feeding box 45 downward. Since the capacity of the feeding box 45 is fixed, the amount of material fed into the feeding box 45 each time is also fixed, achieving the technical effect of quantitative feeding.

[0058] It is worth mentioning that you should refer to Figure 9 , Figures 11-12 The inlet of the feeding box 45 is connected to the inside of the hopper 42. The bottom plate 411 is fixedly connected to the outer wall of the column 44. The bottom of the feeding box 45 is in sliding contact with the top of the bottom plate 411. A through groove is provided on the bottom plate 411. The bottom of the through groove of the bottom plate 411 is fixedly connected to the first connecting pipe 412. The bottom of the first connecting pipe 412 is connected to the inlet of the material cylinder 73. The bottom plate 411 plays a sealing role, so that the bottom of the feeding box 45 is sealed by the bottom plate 411 when no material is being fed. After the one-way valve plate 49 of the outlet of the feeding box 45 is opened, the outlet of the feeding box 45 passes through the through groove of the bottom plate 411.

[0059] During the extrusion of raw materials by the feeding box 45, the feeding box 45 is always located above the through groove of the bottom plate 411 and the first connecting pipe 412, so that the raw materials extruded by the feeding box 45 enter the material cylinder 73 through the first connecting pipe 412. The first connecting pipe 412 also has a certain degree of extensibility and elasticity, which will not affect the overall weighing effect of the material cylinder 73. Through the setting of the feeding component 4, multiple sliders 46 can take turns to draw raw materials from the hopper 42 and then inject the raw materials into the material cylinder 73 through the first connecting pipe 412 during rotation, achieving the technical effect of batch quantitative feeding and improving the accuracy of feeding. Compared with gravity flow, the method of extraction and extrusion can effectively speed up the feeding progress of raw materials, while ensuring the accuracy of each feeding. The hopper 42, feeding box 45, first connecting pipe 412, material cylinder 73, second connecting pipe 715 and feeding box 3 constitute a sealed conveying path for raw materials, effectively avoiding the raw materials from contact with the outside world and being contaminated, thus ensuring the safety of the raw materials.

[0060] It is worth noting that, please refer to Figure 2 , Figure 9The drive unit 5 includes a first motor 51, which is fixedly mounted on a first bracket 41. A gear 52 is fixedly connected to the output end of the first motor 51. A gear ring 53 is fixedly connected to the bottom of the turntable 43, and the gear ring 53 meshes with the gear 52. A protective cover 413 is fixedly connected to the outer wall of the hopper 42. The gear ring 53 and the gear 52 are both located inside the protective cover 413. After the first motor 51 is started, it drives the gear 52 to rotate. When the gear 52 rotates, it drives the turntable 43 to rotate through the gear ring 53.

[0061] Example 3

[0062] Based on the above embodiments, since the oral dissolving film raw material is a mixture of multiple raw materials, after standing for a period of time, it may experience layering and precipitation, which in turn affects the uniformity of the raw materials and affects the product quality. This embodiment is invented to solve the above problems.

[0063] Please see Figure 8 , Figures 13-14 The feeding assembly 4 also includes a mixing section 6, which includes a central shaft 61 and two fixed rods 62. The central shaft 61 is fixedly installed on the top surface of the turntable 43, and the two fixed rods 62 are both fixedly installed on the central shaft 61. A rotating rod 63 is movably sleeved at the end of the fixed rod 62 away from the central shaft 61. Multiple stirring rods 68 are connected to the outer wall of the rotating rod 63. When the turntable 43 rotates, it drives the central shaft 61 to rotate. The central shaft 61 drives the two fixed rods 62 to revolve around the central shaft 61. When the fixed rods 62 revolve, they drive the rotating rod 63 to revolve synchronously. During the revolve, the rotating rod 63 and the stirring rods 68 above it can continuously stir the raw materials in the hopper 42, so that the raw materials maintain good uniformity and avoid the stratification and sedimentation of the raw materials.

[0064] It is worth noting that, please refer to Figures 13-14The fixed rod 62 has an annular groove 64. The inner wall of the rotating rod 63 is fixedly connected to a sliding tongue 65, which is slidably connected to the annular groove 64. The end of the fixed rod 62 that is sleeved with the rotating rod 63 is fixedly connected to a second spring 66. The end of the second spring 66 away from the fixed rod 62 slides against the inner wall of the rotating rod 63. The inner wall of the hopper 42 is fixedly connected to a wave ring 67. The end of the rotating rod 63 away from the fixed rod 62 slides against the wave ring 67. The contact surface between the wave ring 67 and the rotating rod 63 is wavy. The rotating rod 63 uses the elastic force of the second spring 66 to always press against the wave ring 67. When the rotating rod 63 revolves with the fixed rod 62, it can extend and retract along the undulation of the wave ring 67 on the fixed rod 62. When the rotating rod 63 extends and retracts, it can swing back and forth using the cooperation of the sliding tongue 65 and the annular groove 64. The sliding tongue 65 slides along the annular groove 64 when it moves. Since the annular inclined groove 64 is stationary relative to the sliding tongue 65, when the sliding tongue 65 moves, it is driven by the counter-thrust of the annular inclined groove 64 to rotate the rotating rod 63 back and forth. This allows the rotating rod 63 to revolve on its own axis while following the fixed rod 62 in revolution, thereby increasing the range of motion of the stirring rod 68 above the rotating rod 63, and thus increasing the contact area between the stirring rod 68 and the raw material, thereby further improving the stirring effect.

[0065] Furthermore, please refer to Figures 13-14 Multiple vibrating rods 69 are fixedly connected to the turntable 43. The multiple vibrating rods 69 are located above multiple feeding boxes 45. When the stirring rod 68 moves, it can contact the vibrating rods 69 and drive the vibrating rods 69 to vibrate. The vibrating rods 69 are made of elastic material. The vibration of the vibrating rods 69 can promote the flow of raw materials in the hopper 42, thereby promoting the raw materials to enter the feeding box 45. Through the setting of the mixing part 6, the rotating rod 63 and the stirring rod 68 above it can continuously stir the raw materials in the hopper 42 during the revolution, so that the raw materials maintain good uniformity and avoid the stratification and sedimentation of the raw materials. Through the cooperation of the annular inclined groove 64 and the sliding tongue 65, the rotating rod 63 can also reciprocate and rotate on its own axis while following the fixed rod 62, thereby increasing the movement amplitude of the stirring rod 68 above the rotating rod 63, thereby increasing the contact area between the stirring rod 68 and the raw materials, thereby further improving the stirring effect.

[0066] Example 4

[0067] An automatic feeding system for an injection molding machine used in the production of oral dissolving film candies includes a precision metering module, which is located in a controller 75. The precision metering module includes a high-precision sensor and a control system. The high-precision sensor is located in a weighing platform 71. The control system is used to control a first motor 51 and a second motor 76. After acquiring weight data, the high-precision sensor transmits it to the precision metering module. The precision metering module controls the first motor 51 and the second motor 76 to perform the above-mentioned operations through the control system.

[0068] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatic feeding device for an injection molding machine used in the production of oral dissolving film candies, comprising an injection molding machine (1), wherein a base (2) and a feeding box (3) are fixedly installed on the injection molding machine (1), characterized in that: A feeding component (4) is installed on the base (2), and a weighing component (7) is installed on the feeding box (3). The weighing component (7) is connected to the feeding component (4). The feeding component (4) puts the raw material into the weighing component (7). The weighing component (7) puts the raw material into the feeding box (3) after the raw material reaches the set weight. The weighing assembly (7) includes a weighing platform (71), a material cylinder (73), a controller (75), a second motor (76), and a sector block (78). The weighing platform (71) is fixedly installed on the top of the feed box (3). A second bracket (72) is fixedly installed on the weighing platform (71). The material cylinder (73) is fixedly installed on the second bracket (72). The sector block (78) is rotatably installed inside the material cylinder (73). When the sector block (78) rotates, it can squeeze the raw material in the material cylinder (73) into the feed box (3) by squeezing. The feeding assembly (4) includes a hopper (42) and multiple feeding boxes (45), which can quantitatively extract raw materials from the hopper (42) and transport them to the material cylinder (73).

2. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 1, characterized in that: The controller (75) is fixedly installed on the top of the feed box (3), and the second motor (76) is fixedly installed on the second bracket (72). The controller (75) can start the second motor (76) after the weighing platform (71) detects that the weight has reached the set value. The output end of the second motor (76) is fixedly connected to a rotating shaft (74). The rotating shaft (74) is rotatably connected to the material cylinder (73) and the sector block (78). A push block (77) is fixedly connected to the rotating shaft (74). A sector groove is opened inside the sector block (78). The push block (77) is located in the sector groove of the sector block (78). The top and bottom of the material cylinder (73) are respectively provided with an inlet and an outlet. A baffle (79) is fixedly connected to the sector block (78). When the baffle (79) moves, it can pass through and block the inlet and outlet of the material cylinder (73).

3. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 2, characterized in that: The inner wall of the material cylinder (73) is fixedly connected to a limiting block (710). When the fan-shaped block (78) moves, it abuts against the limiting block (710). A second connecting pipe (715) is fixedly connected to the outlet at the bottom of the material cylinder (73). The second connecting pipe (715) is connected to the top of the feed box (3).

4. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 3, characterized in that: The inlet of the material cylinder (73) is hinged with a hinged door (711). When the sector block (78) and the baffle (79) move, they can contact the hinged door (711) and drive the hinged door (711) to close. The inside of the sector block (78) is slidably connected with a pressure block (713). The pressure block (713) and the push block (77) are hinged with a connecting rod (712). The push block (77) and the inner wall of the sector groove of the sector block (78) are fixedly connected with a leaf spring (714). The pressure block (713) can be inserted into the outlet of the material cylinder (73) and the second connecting pipe (715) during the movement.

5. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 1, characterized in that: A first bracket (41) is fixedly installed on the base (2). The hopper (42) is fixedly installed on the first bracket (41). A turntable (43) is rotatably connected to the bottom of the hopper (42). Multiple feeding boxes (45) are fixedly installed on the turntable (43). A drive unit (5) for driving the turntable (43) to rotate is installed on the first bracket (41). A column (44) is fixedly installed on the base (2). The top of the column (44) is rotatably connected to the turntable (43). A slider (46) is slidably connected inside the feeding box (45). An abutment rod (47) is fixedly connected to the slider (46). The abutment rod (47) passes through the feeding box (45) and is in contact with the feeding box. (45) Sliding connection, the inner wall of the feeding box (45) is fixedly connected to the slider (46) with a first spring (48), the outer wall of the column (44) is fixedly connected with a cam (410), the cam (410) is provided with a protrusion, the protrusion of the cam (410) is located above the material cylinder (73), the abutment rod (47) slides along the outer wall of the cam (410) when it moves, the abutment rod (47) can drive the slider (46) to move away from the cam (410) when it slides to the protrusion of the cam (410), the top and bottom of the feeding box (45) are respectively provided with a suction port and a discharge port, and the suction port and discharge port of the feeding box (45) are respectively equipped with a one-way valve plate (49).

6. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 5, characterized in that: The feeding box (45) has an inlet that is connected to the inside of the hopper (42). The column (44) has a base plate (411) fixedly connected to its outer wall. The bottom of the feeding box (45) is in sliding contact with the top of the base plate (411). The base plate (411) has a through groove. The bottom of the through groove of the base plate (411) is fixedly connected to a first connecting pipe (412). The bottom of the first connecting pipe (412) is connected to the inlet of the material cylinder (73).

7. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 6, characterized in that: The drive unit (5) includes a first motor (51), which is fixedly mounted on a first bracket (41). A gear (52) is fixedly connected to the output end of the first motor (51). A gear ring (53) is fixedly connected to the bottom of the turntable (43). The gear ring (53) meshes with the gear (52). A protective cover (413) is fixedly connected to the outer wall of the hopper (42). The gear ring (53) and the gear (52) are both located inside the protective cover (413).

8. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 6, characterized in that: The feeding assembly (4) further includes a mixing section (6), which includes a central shaft (61) and two fixed rods (62). The central shaft (61) is fixedly installed on the top surface of the turntable (43), and the two fixed rods (62) are both fixedly installed on the central shaft (61). A rotating rod (63) is movably sleeved at the end of the fixed rod (62) away from the central shaft (61). A plurality of stirring rods (68) are connected to the outer wall of the rotating rod (63). An annular inclined groove (64) is provided on the fixed rod (62), and a sliding tongue (65) is fixedly connected to the inner wall of the rotating rod (63). The sliding tongue (65) is slidably connected to the annular inclined groove (64). A second spring (66) is fixedly connected to the end of the fixed rod (62) and the rotating rod (63). The end of the second spring (66) away from the fixed rod (62) slides against the inner wall of the rotating rod (63). A wave ring (67) is fixedly connected to the inner wall of the hopper (42). The end of the rotating rod (63) away from the fixed rod (62) slides against the wave ring (67). When the rotating rod (63) revolves with the fixed rod (62), it can extend and retract along the undulation of the wave ring (67) on the fixed rod (62). When the rotating rod (63) extends and retracts, it can reciprocate by using the cooperation of the sliding tongue (65) and the annular inclined groove (64).

9. The automatic feeding device for an injection molding machine used in the production of oral dissolving film candies according to claim 8, characterized in that: Multiple vibrating rods (69) are fixedly connected to the turntable (43). The multiple vibrating rods (69) are located above multiple feeding boxes (45). When the stirring rod (68) moves, it can contact the vibrating rods (69) and drive the vibrating rods (69) to vibrate.

10. An automatic feeding system for an injection molding machine used in the production of oral dissolving film candies, characterized in that: The automatic feeding device for injection molding machine used in the production of oral dissolving film candy according to any one of claims 1-9 further includes a precision metering module, which is set in the controller (75). The precision metering module includes a high-precision sensor and a control system. The high-precision sensor is set in the weighing platform (71). The control system is used to control the first motor (51) and the second motor (76).

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