A lollipop forming device

Abstract

The present invention relates to the field of powder compacting equipment and provides a lollipop forming device, comprising: a central punch plate, provided with die holes, each die hole having a rod slot on one side, the rod slots communicating with the die holes; a rod support bracket, disposed around the outer side of the central punch plate, the rod support bracket having an opening on its bottom surface for discharging settled powder; a rod drop mechanism, comprising a rod bucket, a distribution roller, a negative pressure structure, and a pressure relief structure; a plurality of grooves disposed on the outer circumference of the distribution roller, which alternately move in and out of the rod bucket as the distribution roller rotates, carrying the rods out; negative pressure holes disposed on the inner walls of the grooves, which communicate with the negative pressure structure when the grooves rotate to a first interval and with the pressure relief structure when the grooves rotate to a second interval; and a rod pusher mechanism for pushing the rods to slide and pass through the rod slots. This arrangement reduces the problems of stick jams and missing rods, as well as the problem of rod deviation due to powder deposition. This improves production efficiency and ensures product quality.

Description

Technical Field

[0001] The present invention relates to the field of powder pressing and molding equipment, in particular to a lollipop molding equipment. Background Art

[0002] Lollipops are a common candy food, popular among consumers. These candies are made by inserting various shapes of hard candies onto a small stick. The lollipop pressing machine is a dual-press, multifunctional, automatic, rotary, continuous tableting machine that can press granular or powdered sugar into various shapes, primarily for lollipop production.

[0003] In related technologies, lollipop forming equipment mainly includes:

[0004] A rotatable center punch plate with multiple die holes arranged around the rotating shaft. A rod slot is arranged on one side of the die hole of the center punch plate, and the rod slot is connected to the die hole;

[0005] The stick support bracket is arranged around the middle punching plate and corresponds to the number and position of the die holes, and is used to support the stick body of the lollipop.

[0006] When pressing a lollipop, the stick body is placed on the stick support bracket, which supports the stick body. The head of the stick body passes through the stick slot and is located in the die hole. The powdered sugar is filled into the die hole. Under the action of the upper and lower dies, the powdered sugar is pressed into a hard candy block with a specific shape, and the stick body is pressed and fixed in the candy block at the same time.

[0007] There are generally two ways of dropping rods. One is to place the rod body directly on the rod support bracket manually; the other is to use a rotatable rod distribution plate with grooves to complete the work of transporting and dropping rods. That is, when the groove on the rod distribution plate enters the rod bucket, the rod body in the rod bucket falls into the groove. When the groove with the rod body rotates out of the rod bucket and corresponds to the rod support bracket, the rod body falls onto the rod support bracket under the action of gravity, and the head of the rod body falls into the rod groove.

[0008] Regarding the above-mentioned related technologies, the manual rod placement method is adopted, which has low production efficiency; the rod dividing plate is used, and the rod body is difficult to smoothly enter the groove, resulting in rod jamming or rod shortage problems in the product, which requires shutdown for processing, affecting production efficiency; in addition, due to the influence of dust, when dust accumulates in the rod support bracket or rod groove, the fallen rod body will deviate from the predetermined position, causing the rod body on the product to be skewed, affecting product quality. Summary of the Invention

[0009] The present invention provides a lollipop forming device, which is used to solve the problems of low production efficiency and difficult quality assurance of products in the prior art, thereby improving production efficiency and ensuring product quality.

[0010] The present invention provides a lollipop forming device, comprising:

[0011] A rotatable center punch plate, wherein a plurality of die holes are arranged around the axis of the center punch plate, and a rod slot is provided on one side of each die hole of the center punch plate, wherein the rod slot is connected to the die hole;

[0012] A plurality of rod support brackets are arranged around the outer side of the middle punching plate, the rod slots and the rod support brackets are corresponding in position and collinear, and the bottom surface of the rod support brackets is provided with openings for discharging settled powder;

[0013] A rod dropping mechanism includes a rod bucket, a distribution roller, a negative pressure structure, and a pressure relief structure; the rod bucket is provided with a rod outlet; the distribution roller is rotatable with one side located in the rod outlet; a plurality of grooves are provided on the outer circumference of the distribution roller around the axis for accommodating rods; when the distribution roller rotates, the plurality of grooves alternately enter and exit the rod bucket to carry the rods out of the rod bucket;

[0014] A negative pressure hole is provided on the inner wall of the groove. When the groove rotates to the first section, it is connected to the negative pressure structure to provide negative pressure for the groove; when the groove rotates to the second section, it is connected to the pressure relief structure, the negative pressure in the groove is eliminated, and the rod body can fall onto the rod support bracket under the action of gravity;

[0015] The rod pushing mechanism has an output end capable of reciprocating movement, and is used for pushing the rod body on the rod supporting bracket to slide and penetrate into the rod groove.

[0016] According to a lollipop forming device provided by the present invention, the negative pressure structure comprises:

[0017] a plurality of air holes, each of which is provided in the distribution roller and is connected to the negative pressure hole; a mounting surface is formed at one end of the distribution roller; openings of the air holes are located on the mounting surface and are arranged around the axis of the distribution roller;

[0018] An end cap having a contact surface that is in rotationally sealed engagement with the mounting surface, the contact surface being provided with an arcuate negative pressure groove located along the rotational path of the air hole opening; the path of the negative pressure groove being the first interval;

[0019] A connector is provided on the end cover and is in communication with the negative pressure tank for connecting to vacuum equipment.

[0020] According to a lollipop forming device provided by the present invention, the pressure relief mechanism includes a pressure relief hole, and the pressure relief hole is located on the rotation path of the air hole opening, and the path of the pressure relief hole is the second interval.

[0021] According to the lollipop forming device provided by the present invention, the mounting surface elastically abuts against the contact surface.

[0022] According to a lollipop forming device provided by the present invention, the stick pushing mechanism comprises:

[0023] A push rod guide rail is arranged in a curve along the rotation path of the push rod guide rail, and the push rod guide rail has a curved section concave toward the center punch plate to form a working position;

[0024] A pushing portion is provided in the opening on the bottom surface of the rod support bracket and is slidably matched with the rod support bracket, and the end of the pushing portion passing through the opening on the bottom surface of the rod support bracket is the output end;

[0025] The connecting part is connected to the pushing part and coupled to the push rod guide rail. When the connecting part moves to the working position, it drives the pushing part to slide toward the middle punch plate.

[0026] The reset structure drives the pushing portion to slide away from the middle punch and reset when the connecting portion is separated from the working position.

[0027] According to the lollipop forming device provided by the present invention, the connecting portion is constrained on the push rod guide rail by a guiding structure, and the guiding structure is the reset structure.

[0028] A lollipop forming device according to the present invention further includes a powder recovery system, the powder recovery system comprising:

[0029] A dust collecting assembly, comprising a separator and a storage hopper, wherein the separator is used to separate solid powder from dust; and the storage hopper is used to store the separated solid powder;

[0030] a first vacuum element, connected to the separator, for forming a negative pressure in the separator and sucking dust into the separator through a dust suction pipeline;

[0031] The second vacuum component is communicated with the storage hopper and is used for sucking out the powder stored in the storage hopper and reusing it.

[0032] The lollipop forming equipment provided by the present invention further includes a vacuum loader, which is the second vacuum component.

[0033] According to the present invention, a lollipop forming device also includes a mold assembly, which includes an upper punch located above the mold hole, and the upper punch has a sheet shape at one end facing the membrane hole; a protrusion is provided on one side of the sheet shape, and the protrusion protrudes from the sheet shape, and is used to be embedded in the stick groove and block the connection between the stick groove and the mold hole.

[0034] A lollipop forming device according to the present invention further includes a discharging mechanism provided at a discharging port of the lollipop forming device, the discharging mechanism including:

[0035] A discharge channel, wherein both ends of the discharge channel have openings, and one end is connected to the discharge port;

[0036] The pushing member is arranged at the connection between the discharge channel and the discharge port, and is used to push the product at the discharge port into the discharge channel and be discharged from the opening at the other end of the discharge channel.

[0037] The present invention provides a lollipop forming device in which a distribution roller is driven to rotate by a driving member, so that each groove alternately enters and exits a lollipop bucket. When a groove enters the lollipop bucket, a negative pressure hole is connected to a negative pressure structure. Under the action of negative pressure, the lollipop body smoothly enters the groove and is firmly adsorbed in the groove, reducing the problem of lollipop jamming and missing lollipops. When the groove continues to rotate to the second interval, corresponding to the position of the lollipop support, the pressure relief structure is connected to the negative pressure hole. External air enters the negative pressure hole to eliminate the negative pressure in the groove. Under the action of gravity, the lollipop body falls onto the lollipop support. As the middle punch rotates, the lollipop pushing mechanism moves to the working position, and its output end pushes the lollipop body to slide axially, so that the head of the lollipop body passes through the lollipop groove and enters the die hole. Because the bottom of the support groove has an opening, dust that settles in the support groove can be discharged from the opening at the bottom of the support groove. At the same time, as the lollipop body passes through the lollipop groove, the powder deposited in the lollipop groove can be pushed into the die hole, thereby reducing the problem of lollipop body deviation caused by powder deposition. This improves production efficiency and ensures product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0039] Figure 1 It is a structural schematic diagram of the lollipop forming equipment provided by the present invention;

[0040] Figure 2 This is a schematic structural diagram of the cooperation between the middle punch plate and the rod support bracket provided by the present invention;

[0041] Figure 3 It is a structural schematic diagram of the rod-dropping mechanism provided by the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of the arrangement of the air holes and negative pressure holes in the distribution roller provided by the present invention;

[0043] Figure 5 This is a schematic structural diagram of the end cover and the distribution roller provided by the present invention;

[0044] Figure 6 It is a structural schematic diagram of the end cover provided by the present invention;

[0045] Figure 7 It is a structural schematic diagram of the elastic member provided by the present invention;

[0046] Figure 8 1 is a schematic diagram of the push rod mechanism provided by the present invention;

[0047] Figure 9 This is a schematic structural diagram of the rod pushing mechanism and the rod supporting bracket provided by the present invention;

[0048] Figure 10 A schematic diagram of the structure of the push rod guide rail and the guide bearing provided by the present invention;

[0049] Figure 11 A schematic structural diagram of a mold assembly provided by the present invention;

[0050] Figure 12 The present invention provides Figure 11 A partial enlarged view of part A;

[0051] Figure 13 A schematic diagram of the structure of the stopper and the middle punch provided by the present invention;

[0052] Figure 14 A schematic diagram of the structure of the discharging mechanism and the middle punching plate provided by the present invention;

[0053] Figure 15 A schematic structural diagram of the discharging mechanism provided by the present invention;

[0054] Figure 16 It is a structural schematic diagram of the guide member provided by the present invention;

[0055] Figure 17 It is a structural schematic diagram of the powder recovery system provided by the present invention.

[0056] Reference numerals:

[0057] 1. Frame; 10. Stopper; 2. Center punch; 20. Die hole; 21. Rod slot; 3. Rod support bracket; 30. Support slot; 4. Rod drop mechanism; 40. Rod bucket; 41. Support frame; 42. Distribution roller; 420. Groove; 421. Negative pressure hole; 43. Negative pressure structure; 430. Air hole; 431. End cover; 432. Connector; 433. Negative pressure slot; 44. Pressure relief structure; 440. Pressure relief hole; 45. Driving member; 450. Rotating shaft; 451. Motor; 452. Reducer; 453. Overload protection coupling; 46. Mounting portion; 460. Fixing bolt; 47. Elastic member; 470. Connecting rod; 471. Adjusting nut; 472. Spring; 48. Thrust bearing; 49. Protective structure; 490. Insert; 491. End plate; 492. Fastening bolt; 5. Push rod mechanism; 50. Pushing portion; 51. Mounting frame; 52. Connecting portion; 53. Push rod guide rail; 530. Working position; 531. Slide groove; 54. Sliding assembly; 540. Slide rail; 541. Sliding block; 55. Guide bearing; 6. Mold assembly; 60. Upper punch; 600. Sheet shape; 61. Lower punch; 610. Ejector pin; 62. Protrusion; 7. Unloading mechanism; 70. Feeder; 71. Vacuum loader; 710. Barrel; 711. Loading pipeline; 8. Discharging mechanism; 80. Discharging box; 81. Pushing member; 810. Pushing impeller; 811. Pushing motor; 82. Guide member; 820. Guide impeller; 821. Guide motor; 83. Inclining portion; 9. Powder recovery system; 90. Dust collection assembly; 900. Separator; 901. Storage hopper; 91. First vacuum member; 92. Vacuum pipeline; 93. Dust suction pipeline; 94. Discharging pipe; 95. First valve; 96. Second valve; 97. Air pressure balance pipe; 98. Filter element; 99. Powder suction box. DETAILED DESCRIPTION

[0058] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0059] In order to facilitate understanding of the lollipop forming equipment provided by the invention, its application scenario is first explained. The lollipop forming equipment provided by the present invention is mainly used for producing lollipops. In the prior art, when producing lollipops, the lollipop body is generally placed on the lollipop support bracket manually, or a lollipop distribution plate is used to make the lollipop body fall directly into the lollipop support bracket and the groove, and the production efficiency is low. Therefore, the present invention provides a lollipop forming equipment to improve production efficiency and ensure the product qualification rate.

[0060] The following combination Figures 1-17 The lollipop forming apparatus of the present invention is described.

[0061] Reference Figure 1 and Figure 2 A lollipop forming device includes a frame 1 with a workbench horizontally arranged on the frame 1; it also includes a middle punch plate 2, a rod supporting bracket 3, a rod dropping mechanism 4, a rod pushing mechanism 5 and a mold assembly 6; wherein, the middle punch plate 2 is rotatably arranged on the workbench, and a plurality of mold holes 20 are arranged on the middle punch plate 2 around the axis, and a rod groove 21 is provided on one side of each mold hole 20 of the middle punch plate 2, the rod groove 21 is connected to the mold hole 20, and the extension line of each rod groove 21 passes through the axis of the middle punch plate 2.

[0062] There are multiple rod support brackets 3 and they are arranged around the outer side of the middle punch plate 2. The number of rod support brackets 3 is equal to the number of die holes 20, and their positions correspond to the positions of rod slots 21. The rod support brackets 3 can rotate synchronously with the middle punch plate 2.

[0063] The stick drop mechanism 4 is mounted on the frame 1 and is primarily responsible for dropping the stick onto the stick support 3. The stick push mechanism 5 has a reciprocating output end, which pushes the stick onto the stick support 3 toward the stick slot 21, causing the stick head to pass through the slot 21 and enter the die hole 20. The die assembly 6 cooperates with the die hole 20 to compress the powdered material filled into the die hole 20. During lollipop production, the stick drop mechanism 4 causes the stick to drop onto the stick support 3. The stick push mechanism 5 then pushes the stick toward the stick slot 21, causing the stick head to pass through the slot 21 and enter the die hole 20, filling the die hole 20 with powdered material. The die assembly 6 then compresses the powdered material into shape.

[0064] Reference Figure 3 and Figure 4 The rod-dropping mechanism 4 comprises a rod bucket 40, a support frame 41, a distribution roller 42, a negative pressure structure 43, a pressure relief structure 44, and a drive element 45. The rod bucket 40 is fixedly connected to the frame 1 and is used to hold rods. The bottom of the rod bucket 40 has a rod outlet. The support frame 41 is fixedly connected to the frame 1. The distribution roller 42 is rotatably supported on the support frame 41 and is located below the rod bucket 40. The upper side of the distribution roller 42 is located within the rod outlet. The outer circumference of the distribution roller 42 is provided with multiple grooves 420 around its axis to accommodate the rods. The output end of the drive element 45 is connected to the distribution roller 42 and is used to drive the distribution roller 42 to rotate. When the drive element 45 drives the distribution roller 42 to rotate, the grooves 420 alternately enter and exit the rod bucket 40, removing the rods from the bucket 40.

[0065] The inner wall of the groove 420 is provided with a negative pressure hole 421. When the groove 420 rotates to the first range, the negative pressure structure 43 is connected to the negative pressure hole 421, and the negative pressure structure 43 can provide negative pressure for the groove 420. The groove 420 first rotates back into the stick bucket 40. Under the action of the negative pressure, the stick body smoothly enters the groove 420 and is firmly adsorbed in the groove 420. It then rotates out of the stick bucket 40 and rotates toward the stick support bracket 3. When the groove 420 rotates to the second range, corresponding to the position of the stick support bracket 3, the pressure relief structure 44 is connected to the negative pressure hole 421. The outside air enters the negative pressure hole 421 to eliminate the negative pressure in the groove 420, and the stick body falls onto the stick support bracket 3 under the action of gravity.

[0066] The distribution roller 42 can be made of metal or plastic. In this embodiment, to ensure smooth rotation of the distribution roller 42, reduce the burden on the driver 45, and take manufacturing costs into consideration, the distribution roller 42 is made of polytetrafluoroethylene. The grooves 420 are parallel to the axis of the distribution roller 42. The specifications and specific number of grooves 420 can be selected based on actual needs, such as the number of rod supports 3 and the size of the product. The distribution roller 42 can rotate clockwise or counterclockwise. In this embodiment, there are nine grooves 420 evenly distributed on the outer circumference of the distribution roller 42, and the distribution roller 42 rotates counterclockwise.

[0067] Negative pressure holes 421 are provided on the bottom wall of the groove 420. The number of negative pressure holes 421 can be selected based on the rod model and length. For example, if the rod is thicker or longer, the number of negative pressure holes 421 can be appropriately increased to ensure that the rod can be adsorbed into the groove 420 through negative pressure. Furthermore, the negative pressure holes 421 are preferably arranged symmetrically to improve the uniformity of force applied to the rod and enhance the stability of the rod within the groove 420. The negative pressure structure 43 provides negative pressure to the groove 420 through the negative pressure holes 421.

[0068] Reference Figure 5 and Figure 6 , the negative pressure holes 421 are symmetrically arranged; the negative pressure structure 43 includes air holes 430, end caps 431, and connectors 432; wherein the air holes 430 are provided inside the distribution roller 42 and have openings formed on one end surface of the distribution roller 42. The negative pressure holes 421 are connected to the air holes 430, and the vacuum device provides negative pressure to the grooves 420 through the negative pressure holes 421 and the air holes 430. The specific number of air holes 430 can be selected according to actual needs and can be less than the number of grooves 420, for example, one air hole 430 can be connected to the negative pressure holes 421 in multiple grooves 420, or more than the number of grooves 420, for example, multiple negative pressure holes 421 in a groove 420 can be connected to multiple air holes 430 respectively. It is only necessary to ensure that the openings of the air holes 430 are arranged around the axis of the distribution roller 42.

[0069] In this embodiment, the air holes 430 are parallel to the axis of the distribution roller 42 and are equal in number to the number of grooves 420. The air holes 430 are located adjacent to the grooves 420, and the negative pressure holes 421 in each groove 420 communicate with the air holes 430 at the corresponding position. The distribution roller 42 has an annular mounting surface on the side where the air holes 430 are located. The mounting surface is coaxial with the distribution roller 42, and the air holes 430 are evenly distributed on the mounting surface.

[0070] The end cover 431 has an annular contact surface, which fits the mounting surface and rotates in a sealed manner. An arc-shaped negative pressure groove 433 is provided on the contact surface. The negative pressure groove 433 is located on the rotation path of the air hole 430. The path of the negative pressure groove 433 is the first interval. When the air hole 430 rotates into the first interval, it is connected to the negative pressure groove 433, and negative pressure can be provided to the air hole 430 through the negative pressure groove 433.

[0071] The position and length of the negative pressure groove 433 can be selected based on actual needs, but at least it must ensure that when the groove 420 enters the hopper, the corresponding air hole 430 is located within the first interval, and before the groove 420 rotates to align with the rod support bracket 3, the corresponding air hole 430 is located outside the first interval. The distribution roller 42 is driven to rotate by the driving member 45, and the mounting surface and the contact surface rotate relative to each other, so that the air hole 430 is alternately connected and disconnected with the negative pressure groove 433.

[0072] To minimize the effects of wear on the sealing performance of the mounting and contact surfaces, an annular mounting portion 46 is detachably attached to the end surface of the distribution roller 42 where the air holes 430 are located. Mounting portion 46 is coaxially arranged with the distribution roller 42 and includes multiple through-holes that correspond to the openings of the air holes 430. The surface of mounting portion 46 facing away from the distribution roller 42 serves as the mounting surface. If the mounting surface becomes worn over time, mounting portion 46 can be removed and replaced. For enhanced durability, mounting portion 46 is made of metal.

[0073] The connector 432 is provided on the end cover 431 and is connected to the negative pressure groove 433. It is mainly used to connect to an external vacuum device. The number and position of the connectors 432 can be arranged according to actual needs. In this embodiment, the connector 432 is provided on the side of the end cover 431 away from the distribution roller 42. In actual use, the vacuum device is connected to the connector 432, so that the negative pressure groove 433 is in a negative pressure state. The driving member 45 drives the distribution roller 42 to rotate, and the mounting surface and the contact surface rotate relative to each other. When the air hole 430 rotates to the first interval, it is connected to the negative pressure groove 433, thereby providing negative pressure for the groove 420. When the air hole 430 rotates to the second interval, it is connected to the pressure relief structure 44 to eliminate the negative pressure in the groove 420, so that the rod body can fall onto the rod support bracket 3 under the action of gravity.

[0074] The pressure relief structure 44 includes a pressure relief hole 440 formed on the end cap 431. The pressure relief hole 440 is located on the rotation path of the air hole 430 and is used to allow external air to enter the air hole 430, thereby eliminating the negative pressure in the groove 420 and allowing the rod body to fall from the groove 420 onto the rod support bracket 3 under the action of gravity. To ensure the reliability of pressure relief, the pressure relief hole 440 is a strip-shaped hole. The path of the pressure relief hole 440 is the second interval. The length and position of the second interval can be selected according to actual needs, but at least it must be ensured that when the groove 420 corresponds to the rod support bracket 3, the corresponding air hole 430 is located within the second interval, and when the groove 420 rotates back into the rod bucket 40, the corresponding air hole 430 is located outside the second interval.

[0075] Reference Figure 3 and Figure 7 The mounting surface and the contact surface are elastically abutted by an elastic member 47 to improve the sealing performance between the mounting surface and the contact surface. Specifically, the elastic member 47 includes a connecting rod 470, an adjusting nut 471, and a spring 472. One end of the connecting rod 470 is fixedly connected to the support frame 41. An adjusting hole is provided on the end cap 431 at a position corresponding to the connecting rod 470. The other end of the connecting rod 470 slides through the adjusting hole. The outer peripheral surface of the connecting rod 470 is provided with a thread. The adjusting nut 471 is threadedly connected to the connecting rod 470. The two ends of the spring 472 respectively abut against the adjusting nut 471 and the end cap 431 and are always in a compressed state. Under the pressure of the spring 472, the contact surface and the mounting surface are elastically pressed against each other and sealed. By screwing the adjusting nut 471, the compression amount of the spring 472 can be changed, thereby adjusting the tightness of the fit between the contact surface and the mounting surface. Under the premise of ensuring the sealing of the contact surface and the mounting surface, the distribution roller 42 can rotate smoothly.

[0076] The number and arrangement positions of the elastic members 47 can be selected according to actual needs. The elastic members 47 are not limited to the form described in this embodiment. It is only necessary to elastically press the mounting surface against the contact surface.

[0077] To improve the smoothness of the distribution roller 42's rotation, a gap is created between the end surface of the distribution roller 42 and the end cap 431. The two are connected by a thrust bearing 48. Specifically, a first mounting slot is defined on the end surface of the distribution roller 42, and a second mounting slot is defined on the end cap 431. The first and second mounting slots are coaxially arranged with the distribution roller 42, with the ends of the thrust bearing 48 respectively embedded in the first and second mounting slots. An adjustment shim is embedded in the bottom of the first mounting slot. Depending on the model of the distribution roller 42 and end cap 431, the adjustment shim can be replaced with different thicknesses to ensure a better fit between the thrust bearing 48 and the distribution roller 42 and end cap 431.

[0078] To facilitate the installation, positioning, and guidance of the end cap 431 and improve the stability of the relative rotation between the end cap 431 and the distribution roller 42, a guide structure is provided between the end cap 431 and the distribution roller 42. The guide structure includes a protrusion and a slide groove 531 that fit together and can slide relative to each other. The protrusion is annular and protrudes from the end surface of the distribution roller 42. The slide groove 531 is annular and is provided on the end cap 431. The protrusion and the slide groove 531 are coaxially arranged with the distribution roller 42, and the protrusion is embedded in the slide groove 531. Specifically, there are multiple fixing bolts 460 for fixing the mounting portion 46 and they are arranged around the axis of the distribution roller 42. The large ends of the fixing bolts 460 protrude from the mounting surface, forming the aforementioned protrusion. In another embodiment, the protrusion can also be provided protruding from the end cap 431, and accordingly, the slide groove 531 is provided on the end surface of the distribution roller 42.

[0079] When the driving member 45 drives the distribution roller 42 to rotate, the end cover 431 and the distribution roller 42 rotate relative to each other, and the guide structure can guide the two to improve the stability of the relative rotation between the two.

[0080] Reference Figure 3 The driving member 45 includes a rotating shaft 450, a motor 451, a reducer 452 and an overload protection coupling 453; wherein the rotating shaft 450 is rotatably connected to the support frame 41, and the distribution roller 42 is fixedly connected to the rotating shaft 450; specifically, a number of bearings can be fixedly connected to the support frame 41, and the rotating shaft 450 is fixedly connected to the inner ring of the bearing to improve the smoothness of the rotation of the rotating shaft 450; the output shaft of the motor 451 is connected to the reducer 452, and the output shaft of the reducer 452 is connected to the rotating shaft 450 through the overload protection coupling 453. The overload protection coupling 453 is a prior art, and the structure of the overload protection coupling 453 is not the invention point of the present invention. Therefore, in this embodiment, its structure is not described in detail. When a stick jam occurs, the overload protection coupling 453 can protect the motor 451 to prevent the motor 451 from burning out.

[0081] To reduce wear at the joint between the rotating shaft 450 and the distribution roller 42, a mounting hole is provided at the center of the distribution roller 42. A protective structure 49 is detachably connected to the mounting hole. The rotating shaft 450 and the protective structure 49 are connected by a key and locked with a shaft head bolt. If the joint between the rotating shaft 450 and the protective structure 49 wears, it can be removed and replaced.

[0082] Specifically, the protective structure 49 comprises a central insert 490 and end plates 491 at each end. The distribution roller 42 has recesses at both ends of the mounting hole. The insert 490 is inserted into the mounting hole, and the end plates 491 are inserted into the recesses and fixed to the distribution roller 42 via fastening bolts 492. The end plates 491 clamp the insert 490, facilitating installation and removal of the protective structure 49 from the distribution roller 42. To enhance durability, in this embodiment, the protective structure 49 is made of metal.

[0083] The distribution roller 42 is driven to rotate by the driving member 45, so that each groove 420 alternately enters and exits the rod bucket 40. When the groove 420 enters the rod bucket 40, the negative pressure hole 421 is connected to the negative pressure structure 43. Under the action of negative pressure, the rod body smoothly enters the groove 420 and is firmly adsorbed in the groove 420. When the groove 420 continues to rotate to the second interval, it corresponds to the position of the rod support bracket 3. At this time, the pressure relief structure 44 is connected to the negative pressure hole 421. Outside air enters the negative pressure hole 421, eliminating the negative pressure in the groove 420, and the rod body falls onto the rod support bracket 3 under the action of gravity.

[0084] Reference Figure 2 and Figure 8 A supporting groove 30 is provided on the rod support bracket 3. The supporting groove 30 has openings on both the upper and lower surfaces. The upper opening is larger than the diameter of the rod body so that the rod body falls into the supporting groove 30. The bottom opening is smaller than the diameter of the rod body to prevent the rod body from falling into the supporting groove 30, so that the rod support bracket 3 can support the fallen rod body and is also used to discharge the settled powder.

[0085] The rod pushing mechanism 5 comprises a pushing portion 50, a mounting bracket 51, a connecting portion 52, a rod pushing guide rail 53, and a reset mechanism. One end of the pushing portion 50 passes through an opening at the bottom of the support slot 30 and is located within the support slot 30. The end of the pushing portion 50 located within the support slot 30 serves as the output end. The pushing portion 50 slidably engages with the support slot 30. The reciprocating movement of the pushing portion 50 pushes the rod toward the rod slot 21, causing one end of the rod to penetrate the rod slot 21. The pushing portion 50 then resets, preparing for the next rod pushing operation.

[0086] Reference Figure 8 and Figure 9, the mounting frame 51 is slidably connected to the rod support bracket 3 through the sliding assembly 54, and the pushing part 50 is connected to the mounting frame 51 to improve the stability and smoothness of the sliding of the pushing part 50. Specifically, the sliding assembly 54 includes two sets of mutually interlocking slide rails 540 and sliders 541; wherein, the slide rails 540 are T-shaped slide rails 540, and are arranged at the bottom of the rod support bracket 3 along the length direction of the rod support bracket 3, and the slide rails 540 are fixedly connected to the rod support bracket 3; the slider 541 is a T-shaped slider 541, and is fixedly connected to the mounting frame 51, and the slider 541 is slidably connected to the slide rails 540. Through the mutually interlocking slide rails 540 and sliders 541, the mounting frame 51 can slide smoothly on the rod support bracket 3, improving the stability and smoothness of the sliding of the pushing part 50, and the mounting frame 51 can also be restricted to the rod support bracket 3. The slider 541 may also be a ball slider 541 to convert the sliding friction between the slider 541 and the slide rail 540 into rolling friction, thereby further improving the smoothness of the sliding of the mounting frame 51 .

[0087] Reference Figure 2 and Figure 10 The push rod guide rail 53 is arranged in a circular shape along the rotation path of the rod support bracket 3. It has a curved section that is concave inward toward the center of the center punch disk 2, forming a working position 530. The working position 530 is located downstream of the rod drop station. When pressing a lollipop, the rod body falls into the supporting groove 30 of the rod support bracket 3 at the rod drop station, then enters the working position 530, and completes the rod pushing work at the working position 530. The connecting portion 52 is connected to the mounting frame 51 and coupled to the push rod guide rail 53. As the center punch disk 2 rotates, the rod support bracket 3 rotates accordingly, and the connecting portion 52 moves along the push rod guide rail 53. When it moves to the working position 530, the connecting portion 52 moves toward the center punch disk 2, thereby driving the mounting frame 51 to slide toward the center punch disk 2. The pushing portion 50 then slides and pushes the rod body into the rod groove 21.

[0088] The reset structure, when the connecting portion 52 is separated from the working position 530, the reset structure can drive the pushing portion 50 to slide away from the middle punch plate 2 and reset to prepare for the next pushing rod work.

[0089] The push rod guide rail 53 and the connecting part 52 are engaged with each other through an engaging structure, which constrains the connecting part 52 on the push rod guide rail 53 so that after the connecting part 52 leaves the working position 530, it slides away from the middle punch plate 2 and resets under the pull of the push rod guide rail 53. The engaging structure is the reset structure. Specifically, the interlocking structure includes a protrusion and a slide groove 531; the protrusion is formed at one end of the connecting portion 52 away from the mounting bracket 51, and the slide groove 531 is arranged on the push rod guide rail 53 and arranged along the extension path of the push rod guide rail 53. The protrusion is embedded in the slide groove 531, thereby limiting the movement path of the connecting portion 52 to the extension path of the push rod guide rail 53. When the connecting portion 52 moves on the working position 530, the mounting bracket 51 drives the pushing portion 50 to slide toward the middle punch disk 2, pushing the rod body into the rod groove 21. When the connecting portion 52 leaves the working position 530, under the guidance of the guide rail, the connecting portion 52 moves away from the middle punch disk 2, thereby causing the pushing portion 50 to slide away from the middle punch disk 2 and reset.

[0090] A guide bearing 55 is rotatably connected to the protrusion. This guide bearing 55 is embedded in the chute 531 and rolls against the sidewalls of the chute 531, thereby reducing friction and improving the smoothness of the engagement between the protrusion and the push rod guide rail 53. The guide bearing 55 can be a cam guide bearing 55 to withstand greater loads. In another embodiment, the protrusion can be spherical to reduce frictional resistance against the guide rail.

[0091] In another embodiment, the protrusion can also be protruded from the push rod guide rail 53 and arranged along the extension direction of the push rod guide rail 53. The slide groove 531 is provided on the connecting portion 52. Through the mutually engaged slide groove 531 and the protrusion, the mounting frame 51 is restricted to the extension path of the push rod guide rail 53, thereby realizing the reciprocating sliding of the pushing portion 50.

[0092] In another embodiment, the reset structure can also adopt elastic components such as tension springs and elastic ropes. Accordingly, the connecting portion 52 and the push rod guide rail 53 can cooperate with each other by side abutment; that is, the upper surface of the push rod guide rail 53 is protruding with a convex edge, and the convex edge is arranged along the extension path of the push rod guide rail 53, and the connecting portion 52 abuts against the side of the convex edge facing the middle punch disk 2. When the connecting portion 52 moves to the working position 530, the connecting portion 52 is pushed to slide toward the middle punch disk 2 under the action of the convex edge, and the pushing portion 50 slides toward the middle punch disk 2 accordingly, pushing the rod body into the rod groove 21, and the elastic component undergoes elastic deformation; when the connecting portion 52 is disengaged from the working position 530, the pushing portion 50 slides away from the middle punch disk 2 and resets under the pull of the elastic component.

[0093] The push rod guide rail 53 is covered with a protective plate, which effectively prevents dust from falling into the chute 531, ensuring the long-term and reliable operation of the push rod mechanism 5. Specifically, the protective plate comprises multiple plate units fixedly connected between each two adjacent rod support brackets 3. By splicing the multiple plate units together, they form a cover above the push rod guide rail 53, preventing dust from falling into the chute 531. The protective plate is made of a transparent material such as acrylic, allowing real-time observation of the operating status of the push rod guide rail 53, so that dust in the chute 531 can be cleaned promptly.

[0094] When pressing a lollipop, the driving member 45 drives the distribution roller 42 to rotate, bringing the stick body out of the stick bucket 40. When the groove 420 rotates to the second interval, it corresponds to the position of the stick support bracket 3. At this time, the pressure relief structure 44 is connected to the negative pressure hole 421, and the outside air enters the negative pressure hole 421 to eliminate the negative pressure in the groove 420. The stick body falls into the supporting groove 30 of the stick support bracket 3 under the action of gravity. As the middle punch plate 2 rotates, the stick pushing mechanism 5 moves to the working position 530, and its output end pushes the stick body to slide axially, and the head of the stick body passes through the stick groove 21 and enters the die hole 20. Because the bottom of the supporting groove 30 has an opening, when dust settles in the supporting groove 30, it can be discharged from the opening at the bottom of the supporting groove 30, thereby reducing the problem of stick body deviation due to powder deposition and ensuring that the stick body is in a precise position on the stick support bracket 3. During the process of the rod body passing through the rod groove 21, the powder deposited in the rod groove 21 can be pushed into the die hole 20, ensuring that the part of the rod body located in the rod groove 21 is also maintained in a precise position, thereby reducing the problem of rod body deflection on the product.

[0095] Reference Figure 11 and Figure 12 After the stick falls to a predetermined position, the unloading mechanism 7 of the lollipop forming machine fills the die hole 20 with powdered material, and the lollipop is pressed into shape under the action of the mold assembly 6. Specifically, the unloading mechanism 7 may include a feeder 70 and a vacuum loader 71 disposed on the frame 1. The feeder 70 may be a shoe-shaped feeder 70 or a crescent-shaped feeder 70 commonly used in existing rotary tablet presses. The vacuum loader 71 pneumatically conveys the powdered material in the barrel 710 into the feeder 70. The feeder 70 and the vacuum loader 71 are both prior art and are not the inventive aspects of the present invention. Their structures will not be described in detail.

[0096] The mold assembly 6 includes multiple groups of liftable upper punches 60 and lower punches 61; wherein, the upper punch 60 is located above the die hole 20 and is coaxially arranged with the die hole 20, and a sheet 600 is protruding from the end face of the upper punch 60 facing one end of the die hole 20, which is the forming end of the upper punch 60, and the shape of the sheet 600 is adapted to the shape of the die hole 20.

[0097] The lower punch 61 is located below the die hole 20 and is coaxially arranged with the die hole 20. The lower punch 61 is reduced in diameter toward one end of the upper punch 60 to form a push rod 610. The push rod 610 is passed through the die hole 20 and slides with the die hole 20. A punch is protruding from the end surface of one end of the push rod 610 in the die hole 20. The punch is adapted to the die hole 20 and is used to close the lower end opening of the die hole 20 and cooperate with the sheet 600 to press the powder into shape.

[0098] The frame 1 is provided with a lifting mechanism for driving the upper punch 60 and the lower punch 61 to rise and fall. Specifically, the lifting mechanism can adopt the pressing wheel mechanism commonly used in existing rotary tablet presses. The upper pressing wheel cooperates with the upper punch track to adjust the height of the upper punch 60, and the lower pressing wheel cooperates with the lower punch track to adjust the height of the lower punch 61 to press the product into shape. After the product is formed, the lower punch 61 slides upward to eject the product from the die hole 20.

[0099] A protrusion 62 is provided on one side of the sheet 600, protruding from the forming end. This protrusion is designed to fit into the rod slot 21 of the middle mold and block the opening at one end of the rod slot 21 that connects to the die hole 20. When pressing a lollipop, the stick is placed in the rod slot 21, the die hole 20 is filled with powder, and the upper die 60 descends. Before the sheet 600 enters the die hole 20, the protrusion 62 first fits into the rod slot 21, blocking the opening at the end of the rod slot 21 that connects to the die hole 20. The sheet 600 then enters the die hole 20 and cooperates with the lower die 61 to press the powder into shape. During the pressing process, the obstruction provided by the protrusion 62 reduces the amount of powder that overflows from the rod slot 21, thereby reducing the loosening or falling of the stick body due to material shortage at the base, thereby improving the product quality rate. At the same time, during the pressing process, the end of the rod away from the middle mold may warp, causing the rod of the product to be skewed. The protrusion 62 can also limit the position of the rod in the rod groove 21, reduce the warping of the rod, and further improve the product qualification rate.

[0100] One end of the protrusion 62 is connected to the end surface of the upper punch 60, and one side is connected to the outer side of the sheet 600, thereby eliminating the gap between the protrusion 62, the upper punch 60, and the sheet 600, while improving the stability of the connection of the protrusion 62. Specifically, the upper punch 60, the sheet 600, and the protrusion 62 are integrally cast. In another embodiment, the three can also be fixed by welding.

[0101] The thickness of protrusion 62 is adapted to the width of rod slot 21, so that when protrusion 62 is inserted into rod slot 21, it further improves the blocking effect of protrusion 62 on the powder, thereby further improving the product qualification rate. The length of protrusion 62 protruding from the forming end can be adjusted according to the specifications of rod slot 21, product specifications, and material properties. However, it must at least ensure that during the tableting process, when tablet 600 compresses the powder to the formed state, the distance between the bottom of protrusion 62 and the bottom surface of rod slot 21 is not less than the diameter of the rod body. In other words, protrusion 62 does not exert pressure on the rod body in rod slot 21, thereby preventing damage to the rod body.

[0102] The curvature of the inner surface of the protrusion 62 is the same as the curvature of the inner wall of the die hole 20. That is, when the protrusion 62 is inserted into the rod groove 21, the side of the protrusion 62 facing away from the rod groove 21 smoothly transitions with the inner wall of the die hole 20, ensuring a perfect molding effect. The side of the protrusion 62 facing away from the sheet 600 is an upwardly inclined surface, forming a small end at the end of the protrusion 62 away from the upper die 60. This facilitates the avoidance of product jamming and scratching during product molding and discharge. Specifically, the protrusion 62 may be wedge-shaped or triangular.

[0103] Reference Figure 13 After the product is pressed and formed, the lower punch 61 slides upward to push the product out of the die hole 20, and rotates to the discharge port as the middle punch plate 2 rotates; a strip-shaped stopper 10 is provided at the discharge port. When the tablet rotates to the discharge port, the stopper 10 can block and guide the rotating tablet. Under the action of centrifugal force and the mutual squeezing between the tablets, the tablet moves and is discharged from the discharge port.

[0104] Reference Figure 14 and Figure 15 In order to improve the smoothness of discharging, a discharging mechanism 8 is provided at the discharging port of the device; the discharging mechanism 8 mainly includes a discharging box 80 and a pushing member 81; wherein, the discharging box 80 needs to have at least one passage and openings at both ends of the passage, thereby forming a discharging channel. When the discharging box 80 is connected to the device, the opening at one end is connected to the discharging port. The pushing member 81 is provided at the connection between the discharging box 80 and the discharging port, and is mainly used to push the tablets at the discharging port. After the tablets are pressed, they move to the discharging port under the action of centrifugal force. The pushing member 81 pushes the tablets into the discharging channel and is discharged from the opening at the other end of the discharging channel. When the tablet size 600 is large, or the device is in a slower production mode and the centrifugal force of the tablets is insufficient, the pushing member 81 is activated, and the pushing member 81 applies force to the tablets to promote the discharge of the tablets, thereby reducing the possibility of the tablets blocking the discharging port, achieving smooth discharging, ensuring production efficiency, and saving labor costs.

[0105] The discharge box 80 mainly includes a bottom plate and two side plates arranged on opposite sides of the bottom plate. The bottom plate and the side plates together form a long groove with a U-shaped cross-section, thereby forming the discharge channel; wherein the bottom plate and the side plates can be welded and fixed, or can be cast as one piece.

[0106] The pushing member 81 mainly includes a pushing impeller 810 and a pushing motor 811 for driving the pushing impeller 810 to rotate; wherein, the pushing impeller 810 is located in the discharge channel, and a plurality of pushing teeth are arranged around the outer peripheral surface of the pushing impeller 810. Specifically, the number of pushing teeth can be selected according to actual needs, and the shape of the pushing teeth can be triangular, trapezoidal, rectangular, etc. It is only necessary to ensure that when the pushing impeller 810 rotates, a thrust can be applied to the tablet.

[0107] Reference Figure 15 and Figure 16 The impeller 810 is tilted along the width of the discharge channel so that one side of the impeller 810 is close to the bottom surface of the discharge channel and the other side is away from the bottom surface of the discharge channel. Specifically, it can be determined according to the rotation direction of the die 60 on the device, that is, the rotation direction of the tablet. Because the tablet is blocked by the block 10 at the downstream position in the rotation direction and moves to the discharge port under the action of centrifugal force, the side of the impeller 810 close to the bottom surface of the discharge channel is located downstream in the rotation direction of the tablet, so that the impeller 810 can better exert a driving force on the tablet. The angle between the impeller 810 and the discharge channel can be selected according to actual needs, such as the type and size of the tablet.

[0108] The push motor 811 can be installed at the bottom of the discharge box 80 or at the top of the discharge box 80. The choice can be made based on the convenience of actual installation. In this embodiment, a bracket is fixedly connected to the opening above the discharge box 80, and the push motor 811 is fixedly connected to the bracket. Since the push impeller 810 is tilted, the bracket can also be tilted for ease of installation. The specific tilt direction and angle can be determined based on the tilt direction and angle of the push impeller 810. The bracket and the discharge box 80 can be detachably fixed using screws, pins, etc. In other embodiments, welding can also be used for fixation. In order to improve the reliability of the operation of the push member 81, the push motor 811 adopts a reduction motor 451.

[0109] When producing products containing paper sticks, such as lollipops, a stick support bracket 3 is also provided on the outside of the die cavity. The stick support bracket 3 rotates synchronously with the middle punch turntable. In order to avoid the position of the stick support bracket 3 and better discharge the tablets, the length of the discharge box 80 needs to be appropriately lengthened. Therefore, the discharge channel includes a connecting portion 52 and an extension portion located downstream of the connecting portion 52, wherein the driving impeller 810 is located in the connecting portion 52. The discharge mechanism 8 also includes a guide member 82 provided on the discharge box 80. The working portion of the guide member 82 is located in the extension portion, which is used to push and guide the tablets in the extension portion to be discharged from the discharge channel.

[0110] The guide member 82 primarily comprises a guide impeller 820 and a guide motor 821 for driving the guide impeller 820. The guide impeller 820, the working portion of the guide member 82, is located within the extended portion and is used to push and guide tablets within the discharge channel. The outer circumference of the guide impeller 820 is surrounded by a plurality of guide teeth. The number, shape, and specifications of the guide teeth can be selected based on actual needs, as long as the rotation of the guide impeller 820 can propel the tablets.

[0111] There is an angle between the guide impeller 820 and the bottom surface of the discharge channel, so that the bottom side of the guide impeller 820 is close to the bottom surface of the discharge channel, which can better apply thrust to the tablets. The specific angle can be selected according to the type and size of the tablets. In this embodiment, the axis of the guide impeller 820 is parallel to the bottom surface of the discharge channel.

[0112] In order to improve the discharging effect, there can be two guides 82 symmetrically arranged on opposite sides of the discharging channel, so that the tablets are subjected to uniform force, the force-bearing area is large, the tablets are discharged more smoothly, and tablet accumulation is effectively prevented.

[0113] The discharge mechanism 8 also includes an inclined portion 83 disposed downstream of the discharge box 80. The inclined portion 83 slopes downward, with its higher end communicating with the discharge channel. Specifically, the inclined portion 83 and the discharge box 80 can have the same shape and specifications. The discharge box 80 and the inclined portion 83 can be fixedly connected or integrally cast. Tablets at the discharge port, pushed by the pusher 81 and guided by the guide 82, enter the inclined portion 83 and slide down to a specific position under the action of gravity, facilitating discharge.

[0114] In another embodiment, the number and arrangement of the guides 82 can also be selected according to the tablet shape 600, production scale, production speed, etc.

[0115] In another embodiment, the discharge box 80 may further include a top plate for closing the upper opening of the discharge box 80 to reduce dust during the discharge process. In another embodiment, the cross-section of the discharge box 80 is not limited to a U-shape, and may also be other polygonal shapes.

[0116] The operation of the pusher 81 and the guide 82 can be controlled by an existing electrical control system. When the equipment is automatically producing and running, the electrical system will give instructions to start the operation of the pusher 81 and the guide 82 to push the tablet out of the discharge port.

[0117] During the production process, powder leakage and dust generation are inevitable due to various factors. This dust not only affects the working environment but also settles on components such as the push rod guide 53 and the rod support bracket 3, affecting their normal operation. Therefore, leaked powder is generally removed by an industrial dust collector. However, a large amount of powder is sucked into the industrial dust collector, resulting in low powder utilization, affecting yield and increasing production costs. Therefore, the lollipop forming equipment also includes a powder recovery system 9.

[0118] Reference Figure 1 and Figure 17 A cover made of transparent material is provided on the frame 1. The working parts of the lollipop forming equipment, such as the middle punching plate 2, the rod support bracket 3 and other components are all located in the cover, thereby preventing dust from overflowing. The dust suction end of the powder recovery system 9 is connected to the cover for removing and recovering dust.

[0119] The powder recovery system 9 mainly includes a dust collecting component 90, a first vacuum component 91 and a second vacuum component; wherein, the dust collecting component 90 includes a separator 900 and a storage hopper 901, the separator 900 is used to separate solid powder from the dust, and the separator 900 has an air inlet and an air outlet, the air outlet and the first vacuum component 91 are connected through a vacuum pipe 92, and a negative pressure can be formed in the separator 900 through the first vacuum component 91. The air inlet of the separator 900 is connected to a dust suction pipe 93, and the end of the dust suction pipe 93 away from the separator 900 is the dust suction end.

[0120] When the device is tableting, the first vacuum element 91 is activated. This creates a negative pressure inside the separator 900 via the vacuum line 92, allowing the dust collection line 93 to draw powder leaking from the device into the separator 900. The separator 900 then separates and settles the absorbed powder, which is then stored in the storage hopper 901, thereby enabling powder recovery. The storage hopper 901 is provided with a discharge port, which is connected to the second vacuum element. When the powder stored in the storage hopper 901 needs to be reused, the second vacuum element is activated to suck the powder out of the storage hopper 901, facilitating its reuse.

[0121] Specifically, the separator 900 can adopt the cyclone separator 900 in the prior art, and its specific specifications can be selected according to actual needs, such as the specifications of the equipment, the size of the powder particles, etc., as long as the expected separation effect is guaranteed. The air outlet is located at the top of the cyclone separator 900, and the air inlet is located on the side of the cyclone separator 900. The storage hopper 901 is set at the bottom end of the cyclone separator 900 and is connected to the cyclone separator 900. When collecting the powder, the first vacuum component 91 is started to form a negative pressure in the cyclone separator 900, and the powder leaked from the equipment is sucked into the cyclone separator 900 through the dust suction pipe 93. The air flow carrying the powder enters the cyclone separator 900 tangentially, separates the powder under the action of centrifugal force, and causes the powder to settle into the storage hopper 901 for storage.

[0122] The first vacuum component 91 may be a vacuum pump. In this embodiment, the first vacuum component 91 is an industrial vacuum cleaner, so that the first vacuum component 91 can remove incompletely recovered powder while providing vacuum, thereby ensuring the quality of air in the working environment.

[0123] The discharge port is provided at the bottom of the storage hopper 901, facilitating the second vacuum component to suck out the powder in the storage hopper 901 for reuse. The second vacuum component can be an additional vacuum pump. In this embodiment, the second vacuum component is the vacuum feeder 71 provided with the device. The powder is stored in the barrel 710. The vacuum feeder 71 is connected to the barrel 710 via a feeding line 711 to pneumatically convey the powdered material in the barrel 710 to the feeder 70. The discharge port is connected to the vacuum feeding system via a discharge pipe 94. A first valve 95 is provided on the discharge port to control the opening and closing of the discharge port. When the powder in the storage hopper 901 reaches a certain amount, the first valve 95 can be opened, and the powder stored in the storage hopper 901 can be sucked out by the vacuum feeding system and transported to the tablet press together with the raw powder. Using the vacuum feeding system provided by the tablet press as the second vacuum component eliminates the need for additional vacuum equipment, reducing equipment costs.

[0124] A second valve 96 is provided between the storage hopper 901 and the separator 900 for controlling the connection between the separator 900 and the storage hopper 901. When the powder in the storage hopper 901 is stored to a certain amount, the second valve 96 is closed and the first valve 95 is opened. At this time, the discharge port is connected to the vacuum feeding system. At the same time, the passage between the separator 900 and the storage hopper 901 is disconnected, thereby preventing the vacuum feeding system from interfering with the powder recovery system 9 during the feeding process. The two can operate simultaneously, and the separator 900 can temporarily store the recovered powder for a short period of time, thereby allowing powder recovery and feeding to be performed simultaneously. After the material in the storage hopper 901 is emptied, the first valve 95 is closed and the second valve 96 is opened. The discharge port is closed, the separator 900 is connected to the storage hopper 901, and the powder temporarily stored at the bottom of the separator 900 falls into the storage hopper 901 for storage.

[0125] The first valve 95 and the second valve 96 can be various existing electric or pneumatic valves for ease of control. In this embodiment, the first valve 95 and the second valve 96 are pneumatic butterfly valves. In another embodiment, a level meter can be installed in the storage hopper 901 to measure the surface position of the material in the storage hopper 901 in real time, thereby understanding the amount of powder stored in the storage hopper 901 and facilitating the opening and closing of the first valve 95 and the second valve 96 based on the powder storage level. This process can be automatically controlled using an electrical control system or a PLC control system to ensure the convenience and reliability of the production process.

[0126] In another embodiment, without considering the convenience of operation, the first valve 95 and the second valve 96 may also be manually controlled valves to reduce equipment costs.

[0127] During discharging, since the second valve 96 is in a closed state, the vacuum feeding system will inevitably cause the air pressure in the storage hopper 901 to be unbalanced during the process of sucking the powder out of the storage hopper 901, affecting the smoothness of discharging. In order to maintain the balance of the air pressure in the storage hopper 901 during discharging, the storage hopper 901 is also provided with an air pressure balance port. During discharging, the second valve 96 is closed and the first valve 95 is opened. The vacuum feeding system of the tablet press sucks out the powder stored in the storage hopper 901. At the same time, the outside air can enter the storage hopper 901 through the air pressure balance port, maintaining the balance of the air pressure in the storage hopper 901 and maintaining the smoothness of discharging.

[0128] Specifically, a pressure balancing pipe 97 is connected to the storage hopper 901. The end of the pressure balancing pipe 97 away from the storage hopper 901 serves as the air inlet, i.e., the pressure balancing port. The end of the pressure balancing pipe 97 away from the storage hopper 901 is bent upward, ensuring that the height of the pressure balancing port is no lower than that of the second valve 96. This prevents the material in the storage hopper 901 from overflowing from the pressure balancing port even when the material is full. A filter element 98 is provided at the pressure balancing port to filter the air entering the storage hopper 901, preventing dust and other impurities from entering the storage hopper 901 and contaminating the powder inside. Specifically, the filter element 98 can adopt an existing non-woven fabric filter element 98, an activated carbon filter element 98, etc. to filter dust. If necessary, a moisture-absorbing layer composed of solid desiccants such as calcium oxide, molecular sieve or caustic soda can be set in the filter element 98 to absorb moisture in the air entering the storage hopper 901, thereby reducing the possibility of the powder in the storage hopper 901 getting damp, thereby reducing the problem of sticking to the wall or affecting product quality due to moisture in the powder.

[0129] The vacuum line 92, the dust collection line 93, and the discharge line 94 can be made of either a rigid tube, a flexible tube, or a combination of both. The choice can be made based on practical needs, such as ease of installation. In this embodiment, the vacuum line 92, the dust collection line 93, and the discharge line 94 are made of corrugated flexible tubes to improve ease of connection. A powder suction box 99 is mounted on the end of the dust collection line 93 away from the dust collection assembly 90. The powder suction box 99 has a flared end that faces the die position of the tablet press to improve powder suction efficiency and, therefore, powder recovery efficiency.

[0130] In another embodiment, the separator 900 may not only be a cyclone separator 900, but may also filter and collect dust by filtering. For example, a filter element such as a filter screen or a bag filter may be provided within a housing. The filter element divides the housing into a first area and a second area. A vacuum line 92 connects the first area, and a dust collection line 93 connects the second area. When the first vacuum element 91 is activated, a negative pressure is formed within the housing. The leaked powder is sucked into the housing through the dust collection line 93 and filtered and separated by the filter element. A vibration or pulse blowing device may also be provided within the housing to cause powder adhering to the filter element to fall off by vibration or pulse blowing to prevent clogging of the filter element.

[0131] By providing the dust collecting assembly 90, the first vacuum component 91 and the second vacuum component, the recovered powder can be reused, thereby improving the powder utilization rate, further improving the product yield and reducing the production cost.

[0132] The innovation of the present invention is that: by driving the distribution roller 42 to rotate by the driving member 45, each groove 420 can be alternately entered and exited from the rod bucket 40. When the groove 420 enters the rod bucket 40, the negative pressure hole 421 is connected to the negative pressure structure 43. Under the action of the negative pressure, the rod body can smoothly enter the groove 420 and be firmly adsorbed in the groove 420, thereby reducing the problems of stick jam and stick shortage. When the groove 420 continues to rotate to the second interval, it corresponds to the position of the rod support bracket 3. At this time, the pressure relief structure 44 is connected to the negative pressure hole 421, and the outside air enters the negative pressure hole 421 to eliminate the problem of stick jam and stick shortage. Due to the negative pressure inside, the rod falls onto the rod support bracket 3 under the action of gravity. As the middle punch plate 2 rotates, the rod pushing mechanism 5 moves to the working position 530, and its output end pushes the rod to slide axially, and the head of the rod passes through the rod groove 21 and enters the die hole 20. Since the bottom of the supporting groove 30 has an opening, when dust settles in the supporting groove 30, it can be discharged from the opening at the bottom of the supporting groove 30. At the same time, when the rod penetrates the rod groove 21, the powder deposited in the rod groove 21 can be pushed into the die hole 20, thereby reducing the problem of rod deviation caused by powder deposition. This improves production efficiency and ensures product quality.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A lollipop forming device, characterized in that: include: A rotatable middle punching plate (2), wherein a plurality of die holes (20) are arranged on the middle punching plate (2) around an axis, and a rod groove (21) is arranged on one side of each die hole (20) on the middle punching plate (2), wherein the rod groove (21) is communicated with the die hole (20); A plurality of rod support brackets (3) are arranged around the outside of the middle punching plate (2); the rod slots (21) and the rod support brackets (3) correspond to each other and are collinear; a supporting slot (30) is provided on the rod support bracket (3); both the upper and lower surfaces of the supporting slot (30) have openings; the upper opening of the supporting slot (30) is larger than the bottom opening; the bottom opening is used for discharging settled powder; A rod dropping mechanism (4), the rod dropping mechanism (4) comprising a rod bucket (40), a distribution roller (42), a negative pressure structure (43) and a pressure relief structure (44); the rod bucket (40) is provided with a rod outlet; the distribution roller (42) is rotatable and one side is located in the rod outlet; a plurality of grooves (420) are provided on the outer peripheral surface of the distribution roller (42) around the axis for accommodating rods; when the distribution roller (42) rotates, the plurality of grooves (420) alternately enter and exit the rod bucket (40) to bring the rods in the rod bucket (40) out; A negative pressure hole (421) is provided on the inner wall of the groove (420). When the groove (420) rotates to the first section, it communicates with the negative pressure structure (43) to provide negative pressure for the groove (420); when the groove (420) rotates to the second section, it communicates with the pressure relief structure (44), the negative pressure in the groove (420) is eliminated, and the rod body can fall onto the rod support bracket (3) under the action of gravity. A rod pushing mechanism (5) has an output end capable of reciprocating movement, and is used to push the rod body on the rod supporting bracket (3) to slide and penetrate into the rod slot (21).

2. The lollipop forming equipment according to claim 1, characterized in that: The negative pressure structure (43) comprises: a plurality of air holes (430), the air holes (430) being arranged in the distribution roller (42) and being in communication with the negative pressure hole (421); a mounting surface being formed at one end of the distribution roller (42); openings of the air holes (430) being located on the mounting surface and being arranged around the axis of the distribution roller (42); An end cover (431), the end cover (431) having a contact surface, the contact surface being in rotational sealing engagement with the mounting surface, the contact surface being provided with an arc-shaped negative pressure groove (433), the negative pressure groove (433) being located on a rotational path of the opening of the air hole (430); the path of the negative pressure groove (433) being the first interval; A connector (432) is provided on the end cover (431) and communicates with the negative pressure tank (433) for connecting to a vacuum device.

3. The lollipop forming equipment according to claim 2, characterized in that: The pressure relief structure (44) includes a pressure relief hole (440), and the pressure relief hole (440) is located on the rotation path of the opening of the air hole (430). The path of the pressure relief hole (440) is the second interval.

4. The lollipop forming equipment according to claim 2, characterized in that: The mounting surface elastically abuts against the contact surface.

5. The lollipop forming device according to any one of claims 1 to 4, characterized in that: The push rod mechanism (5) comprises: A push rod guide rail (53) is arranged in a curve along the rotation path of the push rod guide rail (53), and the push rod guide rail (53) has a curved section that is concave toward the center punch disk (2), forming a working position (530); A pushing portion (50) is provided in an opening on the bottom surface of the rod support bracket (3) and is slidably matched with the rod support bracket (3); the end of the pushing portion (50) passing through the opening on the bottom surface of the rod support bracket (3) is the output end; The connecting portion (52) is connected to the pushing portion (50) and coupled to the push rod guide rail (53). When the connecting portion (52) moves to the working position (530), it drives the pushing portion (50) to slide toward the middle punch plate (2); The reset structure drives the pushing portion (50) to slide away from the middle punch plate (2) and reset when the connecting portion (52) is separated from the working position (530).

6. The lollipop forming equipment according to claim 5, characterized in that: The connecting portion (52) is constrained on the push rod guide rail (53) through a guiding structure, and the guiding structure is the reset structure.

7. The lollipop forming equipment according to claim 1, characterized in that: Also included is a powder recovery system (9), the powder recovery system (9) comprising: A dust collecting assembly (90), the dust collecting assembly (90) comprising a separator (900) and a storage hopper (901), the separator (900) being used to separate solid powder from dust; the storage hopper (901) being used to store the separated solid powder; a first vacuum element (91) in communication with the separator (900) and configured to create a negative pressure in the separator (900) and to suck dust into the separator (900) through a dust suction line (93); The second vacuum component is connected to the storage hopper (901) and is used to suck out the powder stored in the storage hopper (901) and reuse it.

8. The lollipop forming device according to claim 7, characterized in that: It also includes a vacuum loader (71), and the vacuum loader (71) is the second vacuum component.

9. The lollipop forming equipment according to claim 1, characterized in that: The mold assembly (6) further comprises an upper punch (60) located above the mold hole (20), and the upper punch (60) has a sheet (600) at one end facing the membrane hole; a protrusion (62) is provided on one side of the sheet (600), and the protrusion (62) protrudes from the sheet (600) and is used to be embedded in the rod groove (21) and block the connection between the rod groove (21) and the mold hole (20).

10. The lollipop forming equipment according to claim 1, characterized in that: The device further comprises a discharging mechanism (8) arranged at the discharging port of the lollipop forming device, wherein the discharging mechanism (8) comprises: A discharge channel, wherein both ends of the discharge channel have openings, and one end is connected to the discharge port; A pushing member (81) is provided at the connection between the discharge channel and the discharge port, and is used to push the product at the discharge port into the discharge channel and be discharged from the opening at the other end of the discharge channel.

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