Forming mold for single-dose eye drop blow-fill-seal machine

Abstract

The present invention relates to a forming mold for a single-dose eye drop blowing, filling and sealing integrated machine, including a mounting frame, in which: a blank extrusion mold is arranged, which includes a blank extrusion mold sleeve and a blank extrusion mold core inserted in one; a left forming mold, which includes a left bottle tail forming frame and a left bottle body forming frame arranged up and down, a left bottle tail forming mold and a left bottle body forming mold respectively assembled on the left bottle tail forming frame and the left bottle body forming frame; a right forming mold, which includes a right bottle tail forming frame and a right bottle body forming frame arranged up and down, a right bottle tail forming mold and a right bottle body forming mold respectively assembled on the right bottle tail forming frame and the right bottle body forming frame. The present invention integrates three processes of forming, filling and sealing in one, and all are completed in a sterile state, saving investment in the power part, small equipment footprint, low plastic bottle production cost, and high intrinsic quality of the finished product, stable and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of pharmaceutical machinery, and in particular relates to a forming mold for a single-dose eye drop blowing, filling and sealing integrated machine. Background Art

[0002] Nowadays, bottle blowing has a high technical content in the three-in-one technology, and the domestic bottle blowing technology is relatively backward. my country has included the blowing, filling and sealing machine in the major technical innovation project. The plastic bottle blowing, filling and sealing machine uses PP, PET, and PE particles as bottle making materials. This equipment is a mechatronic packaging equipment that integrates multiple technical reviews such as bottle blowing, liquid filling, bottle sealing, bottle trimming, bottle conveying, and liquid production process.

[0003] In the field of pharmaceutical machinery, the existing single-dose eye drop blowing, filling and sealing integrated line installs the die-cutting device and the bottle making and filling and sealing device on the same frame. The production process of single-dose eye drops mainly includes extrusion, bottle molding, liquid filling and bottle sealing. That is, the single-dose eye drop bottle body made in the extrusion bottle molding station is transferred to the filling and sealing station to complete the filling and sealing, and then is clamped out by the clamping device, and finally a whole plate of finished products with multiple single-dose eye drops is obtained.

[0004] Therefore, based on these problems, an integrated forming, filling and sealing process is provided, which is completed under sterile conditions without bottle washing, which helps to save water and other energy consumption, save power investment, and has a small equipment footprint. The production cost of plastic bottles is low, and the finished product has high intrinsic quality and is stable and reliable. It is mainly used in the forming mold of a single-dose eye drop blowing, filling and sealing machine for pharmaceutical liquid packaging, and has important practical significance. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention provides an integrated forming, filling and sealing process, which are all completed under a sterile state, without the need to wash bottles, which helps to save water and other energy consumption, save investment in power, and has a small equipment footprint. The production cost of plastic bottles is low, and the finished product has high intrinsic quality and is stable and reliable. The forming mold is mainly used for a single-dose eye drop blowing, filling and sealing integrated machine for packaging pharmaceutical liquids.

[0006] The technical solution adopted by the present invention to solve this problem is:

[0007] A forming mold for a single-dose eye drop blowing, filling and sealing machine, used for forming, filling and sealing eye drop bottles, including a mounting frame, wherein the mounting frame is provided with:

[0008] A blank extrusion die, comprising a blank extrusion die sleeve and a blank extrusion die core which are inserted into one body, wherein the blank extrusion die core can move up and down relative to the blank extrusion die sleeve, and the input end of the blank extrusion die is connected to the output end of the granular material heating extrusion structure;

[0009] The left forming mold comprises a left bottle tail forming frame and a left bottle body forming frame arranged in a vertical direction, a left bottle tail forming mold and a left bottle body forming mold respectively mounted on the left bottle tail forming frame and the left bottle body forming frame, wherein the left bottle tail forming mold comprises a tail mold fixing block and a bottle tail assembly mounted on the tail mold fixing block, and the left bottle body forming mold comprises a head mold fixing block and a bottle body assembly mounted on the head mold fixing block, and the tail mold fixing block can move left and right relative to the left bottle tail forming frame;

[0010] The right molding mold comprises a right bottle tail molding frame and a right bottle body molding frame which are arranged in upper and lower parts, a right bottle tail molding mold and a right bottle body molding mold which are respectively assembled on the right bottle tail molding frame and the right bottle body molding frame, the right bottle tail molding mold has the same structural composition as the left bottle tail molding mold, the right bottle body molding mold has the same structural composition as the left bottle body molding mold, and the tail mold fixing block on the right bottle tail molding frame is fixedly connected to the right bottle tail molding frame.

[0011] Preferably, the granular material heating extrusion structure includes a heating cavity, an extrusion pipe evenly formed at the lower end of the heating cavity along the length direction of the heating cavity, a billet extrusion die is installed at the output end of the extrusion pipe, at least one feeding port is provided at the upper end of the heating cavity, a screw extrusion auger is provided in the heating cavity, and the granular material heating extrusion structure is provided with an auger motor which is transmission-connected to the screw extrusion auger.

[0012] Further preferably, the left molding die and the right molding die jointly enclose a plurality of eye drop bottle molding spaces, each of which can be used to mold, fill and seal an eye drop bottle, and the blank extrusion die corresponds to the eye drop bottle molding space, the blank extrusion die is correspondingly installed at the output end of the extrusion pipeline, and the blank extrusion die and the eye drop bottle molding space are arranged correspondingly up and down.

[0013] Further preferably, the billet extrusion die sleeve is a hollow cylindrical structure that passes through from top to bottom, a flange mounting seat is formed on the outer wall of the billet extrusion die sleeve, a circle of raised portions is formed at the upper end of the billet extrusion die sleeve along its circumference, a fixed mounting seat that cooperates with the flange mounting seat is formed on the outer wall of the lower end of the extrusion pipe, the flange mounting seat is installed on the fixed mounting seat of the extrusion pipe by bolts, a groove sealing portion that matches the shape of the upper end of the billet extrusion die sleeve is formed at the lower end of the extrusion pipe, and an extrusion space is formed inside the billet extrusion die sleeve for the billet extrusion core to pass through.

[0014] Further preferably, the billet extrusion mold core is a solid structure consisting of an integrally formed threaded portion, a cylindrical main body portion, and an extrusion portion, the billet extrusion mold core is provided with a driving rod along its axial direction, the extrusion portion is a truncated cone structure that is small at the top and large at the bottom, the lower portion of the extrusion space is also a truncated cone structure that is small at the top and large at the bottom, the inclination angle of the lower portion of the extrusion space is slightly larger than the inclination angle of the extrusion portion, and the granular material heating extrusion structure is provided with a micro-servo mechanism that drives the billet extrusion mold core to move up and down.

[0015] Further preferably, the micro-motion servo mechanism includes a micro-motion rod arranged along the length direction of the heating cavity, and micro-motion oil cylinders arranged at both ends of the micro-motion rod, the micro-motion rod is located below the screw extrusion auger, the micro-motion oil cylinder is installed on the bottom wall of the pellet heating extrusion structure, the free end of the piston rod of the micro-motion oil cylinder extends into the heating cavity and is fixed to the micro-motion rod, and the upper end of the driving rod extends into the heating cavity and is fixed to the micro-motion rod. The diameter of the micro-motion rod is smaller than the diameter of the extrusion pipe.

[0016] Preferably, the left bottle tail forming frame / right bottle tail forming frame respectively include a horizontally arranged plastic support splint and plastic support mounting blocks respectively fixed to both sides of the lower end of the plastic support splint, the left bottle tail forming mold / right bottle tail forming mold are respectively assembled between the plastic support splint and the plastic support mounting blocks, the left bottle tail forming mold / right bottle tail forming mold is fixed to the tail mold back plate at one side away from the eye drop bottle body forming space, the tail mold back plate is fixed to the tail mold support plate, and the tail mold driving mechanism for driving the tail mold support plate to move left and right is provided on the tail mold support plate on the left bottle tail forming frame.

[0017] Further preferably, the tail mold driving mechanism is at least two tail mold oil cylinders connected between the tail mold backing plate and the left bottle tail molding frame.

[0018] Further preferably, the bottle tail assembly includes a bottle tail label part A, a bottle tail label part B, and a filling and sealing part which are sequentially assembled on the tail mold fixing block from top to bottom, and one end of the bottle tail label part A, the bottle tail label part B, and the filling and sealing part facing the molding space of the eye drop bottle body are respectively located on the same vertical plane as the tail mold fixing block.

[0019] Further preferably, the lower part of the side of the tail mold fixing block facing the molding space of the eye drop bottle body is provided with an installation cavity for accommodating the bottle tail label part A, the bottle tail label part B, and the filling and sealing part, the lower end of the installation cavity of the tail mold fixing block is an open structure, and a plurality of vertical grooves are evenly and correspondingly provided on the two opposite tail mold fixing blocks.

[0020] Preferably, the left bottle body forming frame / right bottle body forming frame respectively include a vertically arranged head mold backing plate and side clamping plates respectively fixed to both sides of the head mold backing plate, and the left bottle body forming mold / right bottle body forming mold are respectively assembled between the head mold backing plate and the side clamping plates.

[0021] Further preferably, the bottle body assembly includes a bottle body assembly and a bottle head assembly arranged vertically, the head mold fixing block includes an upper head mold fixing block and a lower head mold fixing block arranged vertically, the bottle body assembly includes a bottle bottom and at least one bottle body portion sequentially assembled on the upper head mold fixing block from top to bottom, and the bottle head assembly includes a bottle shoulder portion, a neck portion, and a semicircular sealing cap portion sequentially assembled on the lower head mold fixing block from top to bottom.

[0022] Further preferably, the upper head mold fixing block is provided with a mounting cavity for accommodating the bottom and body of the bottle on the side facing the molding space of the eye drop bottle body, and the lower head mold fixing block is provided with a mounting cavity for accommodating the shoulder, neck and semicircular sealing cap of the bottle on the upper part of the side facing the molding space of the eye drop bottle body. The upper end of the mounting cavity of the lower head mold fixing block is an open structure, and a number of vertical grooves are also evenly and correspondingly provided on the two opposite head mold fixing blocks.

[0023] Further preferably, the outer walls of the left bottle tail forming frame, the left bottle body forming frame, the right bottle tail forming frame, and the right bottle body forming frame are respectively connected with cold water connection seats, and the cold water connection seats are provided with water inlet joints and water outlet joints. The left bottle tail forming frame and the left bottle tail forming mold, the left bottle body forming frame and the left bottle body forming mold, the right bottle tail forming frame and the right bottle tail forming mold, and the right bottle body forming frame and the right bottle body forming mold are respectively provided with cooling water channels that are interconnected. The cooling water channels are passage structures starting from the water inlet joint, passing through the left bottle tail forming frame and the left bottle tail forming mold, or passing through the left bottle body forming frame and the left bottle body forming mold, or passing through the right bottle tail forming frame and the right bottle tail forming mold, or passing through the right bottle body forming frame and the right bottle body forming mold, and ending at the water outlet joint. Sealing O-rings are provided between adjacent cooling water channels.

[0024] Further preferably, the outer walls of the left bottle tail forming frame, the left bottle body forming frame, the right bottle tail forming frame, and the right bottle body forming frame are respectively connected with vacuum connection seats, the vacuum connection seats are provided with vacuum joints, and mutually connected vacuum channels are respectively provided between the left bottle tail forming frame and the left bottle tail forming mold, between the left bottle body forming frame and the left bottle body forming mold, between the right bottle tail forming frame and the right bottle tail forming mold, and between the right bottle body forming frame and the right bottle body forming mold, and the vacuum joints are connected with the vacuum channels. Sealing O-rings are provided between adjacent vacuum channels.

[0025] Further preferably, both sides of the tail mold fixing block on the left bottle tail molding frame are respectively protruded to form a first guide pin, and both sides of the tail mold fixing block on the right bottle tail molding frame are respectively recessed to form a first pin sleeve which is inserted in a one-to-one correspondence with the first guide pin, and both sides of the left bottle body molding frame are respectively protruded to form a second guide pin, and both sides of the right bottle body molding frame are respectively recessed to form a second pin sleeve which is inserted in a one-to-one correspondence with the second guide pin.

[0026] Further preferably, two driving cylinders are relatively arranged in the installation frame, and the free ends of the piston rods of the two cylinders are respectively connected to the left molding die and the right molding die.

[0027] The advantages and positive effects of the present invention are:

[0028] The present invention integrates three working steps of forming, filling and sealing in one, and all are completed under a sterile state. There is no need to wash bottles, which helps to save water and other energy consumption, and can save investment in power. The equipment occupies a small area, the production cost of plastic bottles is low, and the finished product has high intrinsic quality and is stable and reliable. It is mainly used for the packaging of liquid medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0030] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0031] Figure 2 2 is a schematic diagram of the structure of a left molding die and a right molding die;

[0032] Figure 3 yes Figure 1 The main structural diagram of the medium granular material heating extrusion structure;

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the pellet heating extrusion structure;

[0034] Figure 5 It is a schematic diagram of the cross-sectional structure of the blank extrusion die sleeve;

[0035] Figure 6 It is a schematic diagram of the cross-sectional structure of the blank extrusion die core;

[0036] Figure 7 It is a schematic diagram of the main structure of the left forming mold;

[0037] Figure 8It is a schematic diagram of the main structure of the right molding die;

[0038] Fig. 9 It is a structural schematic diagram of the left bottle tail forming frame and the left bottle tail forming mold in the assembled state;

[0039] Fig.10 It is a structural schematic diagram of the tail mold fixing block;

[0040] Fig.11 It is a schematic diagram of the structure of the bottle tail combination;

[0041] Fig.12 This is a schematic diagram of the structure of the A part of the bottle tail label;

[0042] Fig.13 This is a schematic diagram of the structure of the B part of the bottle tail label;

[0043] Fig.14 It is a structural diagram of the filling and sealing part;

[0044] Fig.15 It is a structural schematic diagram of the left bottle body forming frame and the left bottle body forming mold in the assembled state;

[0045] Fig.16 It is a structural schematic diagram of the left bottle body forming frame;

[0046] Fig.17 It is a structural schematic diagram of the upper head mold fixing block;

[0047] Fig.18 It is a structural schematic diagram of the lower head mold fixing block;

[0048] Fig.19 It is a schematic diagram of the structure of the bottom of the bottle;

[0049] Fig. 20 It is a schematic diagram of the structure of the bottle body;

[0050] Fig.21 It is a schematic diagram of the structure of the bottle shoulder;

[0051] Fig. 22 It is a structural schematic diagram of the bottleneck;

[0052] Fig.23 It is a structural schematic diagram of a semicircular sealing cap;

[0053] Fig.24 It is a schematic diagram of the main structure of the eye drop bottle.

[0054] In the figure: 1. billet extrusion die, 101. billet extrusion die sleeve, 102. billet extrusion die core, 103. pellet heating extrusion structure, 104. heating cavity, 105. extrusion pipeline, 106. feeding port, 107. screw extrusion auger, 108. auger motor, 109. flange mounting seat, 110. raised portion, 111. fixed mounting seat, 112. extrusion space, 113. threaded portion, 114. cylindrical main body, 115. extrusion portion, 116. driving rod, 117. micro-motion rod, 118. micro-motion cylinder;

[0055] 2. Left molding mold, 201. Left bottle tail molding frame, 202. Left bottle body molding frame, 203. Tail mold fixing block, 204. Upper head mold fixing block, 205. Lower head mold fixing block, 206. Plastic support splint, 207. Plastic support mounting block, 208. Tail mold back plate, 209. Tail mold back plate, 210. Bottle tail label A part, 211. Bottle tail label B part, 212. Filling and sealing part, 213. Head mold back plate, 214. Side splint, 215. Bottle bottom, 216. Bottle body, 217. Bottle shoulder, 218. Bottle neck, 219. Semicircular capping part, 220. Cold water connection seat, 221. Water inlet joint, 222. Water outlet joint, 223. Vacuum connection seat, 224. Vacuum joint, 225. First guide pin, 226. Second guide pin, 227. Maintenance rod;

[0056] 3. right molding mold, 301. right bottle tail molding frame, 302. right bottle body molding frame, 303. first pin sleeve, 304. second pin sleeve, 305. eye screw;

[0057] 4. Eye drop bottle, 401. Bottle tail label area A, 402. Bottle tail label area B, 403. Bottle body area, 404. Bottle shoulder area, 405. Opening and twisting off area, 406. Semicircular capping area, 407. Handle area;

[0058] 5. Driving cylinder. DETAILED DESCRIPTION

[0059] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation", "screwing" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The present invention is described in detail below with reference to the accompanying drawings.

[0061] Embodiment 1:

[0062] like Figure 1-24 As shown, a forming mold for a single-dose eye drop blowing, filling and sealing integrated machine is used for forming and sealing the eye drop bottle, including a mounting frame, characterized in that: the mounting frame is provided with:

[0063] The blank extrusion die 1 comprises a blank extrusion die sleeve 101 and a blank extrusion die core 102 which are inserted into one body. The blank extrusion die core 102 can move up and down relative to the blank extrusion die sleeve 101. The input end of the blank extrusion die is connected to the output end of the granular material heating extrusion structure 103.

[0064] The left forming mold 2 comprises a left bottle tail forming frame 201 and a left bottle body forming frame 202 which are arranged in a vertical direction, a left bottle tail forming mold and a left bottle body forming mold which are respectively assembled on the left bottle tail forming frame 201 and the left bottle body forming frame 202, wherein the left bottle tail forming mold comprises a tail mold fixing block 203 and a bottle tail assembly assembled on the tail mold fixing block, and the left bottle body forming mold comprises a head mold fixing block and a bottle body assembly assembled on the head mold fixing block, and the tail mold fixing block 203 can move left and right relative to the left bottle tail forming frame 201;

[0065] The right molding mold 3 comprises a right bottle tail molding frame 301 and a right bottle body molding frame 302 which are arranged vertically, and a right bottle tail molding mold and a right bottle body molding mold which are respectively assembled on the right bottle tail molding frame 301 and the right bottle body molding frame 302. The right bottle tail molding mold has the same structural composition as the left bottle tail molding mold, and the right bottle body molding mold has the same structural composition as the left bottle body molding mold. The tail mold fixing block 203 on the right bottle tail molding frame is fixedly connected to the right bottle tail molding frame 301.

[0066] Working principle: the granular material heating extrusion structure 103 is used to heat and melt the PE granular material, and extrude a cylindrical blank through the set blank extrusion mold 1. The cylindrical blank is clamped between the left molding mold 2 and the right molding mold 3. First, the cylindrical blank is clamped between the left bottle body molding mold and the right bottle body molding mold to be formed into a bottle body, and then the bottle body is moved to the liquid medicine filling area for aseptic filling of the liquid medicine. The bottle body molding and liquid medicine filling are completed continuously. At the same time, the filling area is carried out in a Class A environment. After the liquid medicine is filled, the left bottle tail molding mold and the right bottle tail molding mold are quickly closed to make the tail of the bottle body instantly closed and sealed, thereby achieving a sterile state of the liquid medicine in the bottle.

[0067] Wherein: the blank extrusion die 1 includes a blank extrusion die sleeve 101 and a blank extrusion die core 102 which are inserted into one body. The blank extrusion die core 102 is inserted into the blank extrusion die sleeve 101. The melted PE granules in the granule heating extrusion structure are extruded through the gap between the blank extrusion die core 102 and the blank extrusion die sleeve 101, and then the cylindrical blank is extruded. Since the blank extrusion die core 102 can move up and down relative to the blank extrusion die sleeve 101, the gap between the blank extrusion die core 102 and the blank extrusion die sleeve 101 can be changed, so as to adjust the different thicknesses of the cylindrical blank to meet the needs of bottle molding. By adjusting the blank extrusion die 1, different thicknesses of the cylindrical blank can be achieved, so that the twisting force of the bottle cap part is within a suitable range when the bottle body is molded, and the light transmittance and transparency of the bottle body part reach a qualified range.

[0068] The left molding die 2 and the right molding die 3 are arranged opposite to each other, and two driving cylinders 5 are arranged opposite to each other on the mounting frame. The free ends of the piston rods of the two driving cylinders 5 are respectively connected to the left molding die 2 and the right molding die 3. The left molding die 2 and the right molding die 3 are closed and opened by the driving cylinders 5 on both sides, and the left molding die 2 and the right molding die 3 move horizontally, thereby ensuring that the gap amounts at various points after the left molding die 2 and the right molding die 3 are closed remain consistent.

[0069] The melted PE granules in the granule heating extrusion structure are extruded into a cylindrical blank through the gap of the blank extrusion die 1, and the cylindrical blank moves down to the eye drop bottle body forming space. Each eye drop bottle body forming space corresponds to an integral cylindrical blank forming eye drop bottle body. Adjacent eye drop bottles are squeezed into creases to facilitate subsequent separation into single eye drop bottles. After that, during the closing process of the left molding die 2 and the right molding die 3, the left bottle tail molding frame 201 and the left bottle body molding frame 202 are integrated, and the right bottle tail molding frame 301 and the right bottle body molding frame 302 are integrated. The whole body moves toward the eye drop bottle molding space direction, the left bottle molding mold, the right bottle molding mold, the head mold fixing block, and the bottle assembly move toward the eye drop bottle molding space direction, first the cylindrical blank is clamped by the two bottle assemblies to form a bottle body, and then filling is performed, after the filling needle is reset, the tail mold fixing block 203 moves and closes with the bottle tail assembly along the left bottle tail molding frame 201 toward the eye drop bottle molding space direction, and the cylindrical blank above the bottle body is clamped between the two bottle tail assemblies, and is formed into a bottle tail under the action of the two bottle tail assemblies. After the eye drop product after molding and filling is clamped by the removal fixture, the single-dose eye drop whole plate product is clamped and transferred out.

[0070] Among them: the bottle body includes the bottle body area, bottle shoulder area, opening and twisting off area, semicircular capping area, and handle area; the bottle tail includes the bottle tail label area A, bottle tail label area B, and filling and sealing area.

[0071] The eye drops produced by this molding mold ensure the sterility of the product, have a small volume and are used once, thus avoiding contamination caused by repeated use, and also effectively reducing the purchase cost for patients.

[0072] Furthermore, in this embodiment, it can also be considered that the blank extrusion die 1 is located directly above the center between the left molding die 2 and the right molding die 3 .

[0073] Furthermore, it can also be considered in this embodiment that the pellet heating extrusion structure 103 includes a heating cavity 104, an extrusion pipe 105 uniformly formed at the lower end of the heating cavity along the length direction of the heating cavity 104, a blank extrusion die 1 is installed at the output end of the extrusion pipe 105, at least one feeding port 106 is provided at the upper end of the heating cavity 104, a screw extrusion auger 107 is provided in the heating cavity 104, and an auger motor 108 connected to the screw extrusion auger 107 is provided on the pellet heating extrusion structure 103. PE pellets are added to the heating cavity 104 of the pellet heating extrusion structure 103 through the feeding port 106, a heating device is provided outside the heating cavity 104 for heating and melting the PE pellets, and the auger motor 108 can drive the screw extrusion auger 107 to rotate, and the melted PE pellets in the heating cavity 104 are extruded through each extrusion pipe 105 and the blank extrusion die 1 under the action of the screw extrusion auger 107 to form a cylindrical blank.

[0074] Furthermore, in this embodiment, it can be considered that the left molding die 2 and the right molding die 3 are enclosed together to form a plurality of eye drop bottle molding spaces, each of which can be used to mold, fill, and seal an eye drop bottle 4, the number of the blank extrusion dies 1 is the same as the number of eye drop bottle molding spaces, and the plurality of blank extrusion dies 1 are correspondingly installed at the output end of the extrusion pipeline 105, and the blank extrusion dies 1 are arranged correspondingly above and below the eye drop bottle molding spaces. Each plate of eye drop bottle can be conveniently divided into a single bottle, the bottle body is sealed with a one-time opening type, the bottle body has good transparency, and the bottle mouth is easy to open and use.

[0075] Furthermore, in the present embodiment, it can also be considered that the billet extrusion die sleeve 101 is a hollow cylindrical structure that passes through from top to bottom, and a flange mounting seat 109 is formed on the outer wall of the billet extrusion die sleeve 101. The upper end of the billet extrusion die sleeve 101 is formed with a circle of raised portions 110 along its circumference, and the outer wall of the lower end of the extrusion pipe 105 is formed with a circle of fixed mounting seats 111 that cooperate with the flange mounting seat 109. The flange mounting seat 109 is installed on the fixed mounting seat 111 of the extrusion pipe by bolts, and the lower end of the extrusion pipe 105 is formed with a groove sealing portion that matches the shape of the upper end of the billet extrusion die sleeve 101, and the interior of the billet extrusion die sleeve 101 is formed with an extrusion space 112 for the billet extrusion core 102 to pass through. The blank extrusion die core 102 is inserted into the blank extrusion die sleeve 101, and the blank extrusion die sleeve 101 is installed on the lower end of the extrusion pipe 105 through the flange mounting seat 109 and the fixed mounting seat 111, wherein the lower end of the extrusion pipe 105 is formed with a groove sealing portion that is adapted to the shape of the upper end of the blank extrusion die sleeve 101, which greatly improves the airtightness of the connection between the blank extrusion die sleeve 101 and the extrusion pipe 105.

[0076] Furthermore, in the present embodiment, it can also be considered that the blank extrusion core 102 is a solid structure consisting of an integrally formed threaded portion 113, a cylindrical main body portion 114, and an extrusion portion 115. The blank extrusion core 102 is provided with a driving rod 116 along its axial direction. The extrusion portion 115 is a truncated cone structure that is small at the top and large at the bottom. The lower portion of the extrusion space 112 is also a truncated cone structure that is small at the top and large at the bottom. The inclination angle of the lower portion of the extrusion space 112 is slightly larger than the inclination angle of the extrusion portion 115. A micro-servo mechanism for driving the blank extrusion core 102 to move up and down is provided in the granular material heating extrusion structure 103. The melted PE granules in the granule heating extrusion structure are extruded through the gap between the billet extrusion die core 102 and the billet extrusion die sleeve 101, and then the cylindrical billet is extruded. The granule heating extrusion structure 103 is provided with a micro-servo mechanism for driving the billet extrusion die core 102 to move up and down, which can realize the change of the gap between the billet extrusion die core 102 and the billet extrusion die sleeve 101, thereby adjusting the different thicknesses of the cylindrical billet to meet the needs of bottle molding.

[0077] Furthermore, it can also be considered in this embodiment that the micro-motion servo mechanism includes a micro-motion rod 117 arranged along the length direction of the heating cavity 104, and micro-motion oil cylinders 118 arranged at both ends of the micro-motion rod 117, the micro-motion rod 117 is located below the screw extrusion auger 107, and the micro-motion oil cylinder 118 is installed on the bottom wall of the particle material heating extrusion structure 103, the free end of the piston rod of the micro-motion oil cylinder 118 extends into the heating cavity 104 and is fixed to the micro-motion rod 117, and the upper end of the driving rod 116 extends into the heating cavity 104 and is fixed to the micro-motion rod 117. The diameter of the micro-motion rod 117 is smaller than the diameter of the extrusion pipe 105. The micro-motion rod 117 can be driven to move up and down by the telescopic free end of the piston rod of the micro-motion oil cylinder 118, and the micro-motion rod 117 is connected to the blank extrusion mold core 102 through the driving rod, and then the blank extrusion mold core 102 is moved up and down.

[0078] Furthermore, in the present embodiment, it can also be considered that the left bottle tail forming frame 201 and the left bottle body forming frame 202 are fixed to each other by a plurality of connecting long locating pins, the left bottle tail forming frame 201 and the left bottle tail forming mold are fixed to each other by a plurality of connecting long locating pins, and the left bottle body forming frame 202 and the left bottle body forming mold are fixed to each other by a plurality of connecting long locating pins; the right bottle tail forming frame 301 and the right bottle body forming frame 302 are fixed to each other by a plurality of connecting long locating pins, the right bottle tail forming frame 301 and the right bottle tail forming mold are fixed to each other by a plurality of connecting long locating pins, and the right bottle body forming frame 302 and the right bottle body forming mold are fixed to each other by a plurality of connecting long locating pins.

[0079] Furthermore, in the present embodiment, it can also be considered that the left bottle tail forming frame 201 / right bottle tail forming frame 301 respectively include a horizontally arranged plastic support splint 206 and plastic support mounting blocks 207 respectively fixed to both sides of the lower end of the plastic support splint 206, the left bottle tail forming mold 201 / right bottle tail forming mold 301 are respectively assembled between the plastic support splint 206 and the plastic support mounting blocks 207, the side of the left bottle tail forming mold / right bottle tail forming mold away from the eye drop bottle body forming space is fixed to the tail mold back plate 208, the tail mold back plate 208 is fixed to the tail mold support plate 209, and the tail mold support plate 209 on the left bottle tail forming frame 201 is provided with a tail mold driving mechanism for driving the tail mold support plate 209 to move left and right.

[0080] The tail mold driving mechanism is at least two tail mold oil cylinders connected between the tail mold support plate 209 and the left bottle tail molding frame 201. The tail mold oil cylinder can drive the left bottle tail molding mold to move along the left bottle tail molding frame 201 toward the eye drop bottle body molding space, thereby realizing the bottle body molding first and the bottle tail molding later.

[0081] Furthermore, in this embodiment, it can also be considered that the bottle tail assembly includes a bottle tail label part A 210, a bottle tail label part B 211, and a filling and sealing part 212 which are assembled on the tail mold fixing block 203 from top to bottom in sequence, and the ends of the bottle tail label part A 210, the bottle tail label part B 211, and the filling and sealing part 212 facing the molding space of the eye drop bottle body are respectively located on the same vertical plane as the tail mold fixing block 203.

[0082] The lower part of the side of the tail mold fixing block 203 facing the eye drop bottle body molding space is provided with an installation cavity for accommodating the bottle tail label A part 210, the bottle tail label B part 211, and the filling and sealing part 212. The lower end of the installation cavity of the tail mold fixing block 203 is an open structure, and a plurality of vertical grooves are evenly and correspondingly provided on the two opposite tail mold fixing blocks 203.

[0083] The bottle tail label A portion 210 includes a module plate and a plurality of bottle tail label A forming grooves uniformly arranged along the length direction of the module plate. The bottle tail label A forming grooves are used to form the bottle tail label A area 401. The number of the bottle tail label A forming grooves is the same as the number of the forming spaces of the eye drop bottle body. The three sides of the bottle tail label A forming grooves are formed with forming ribs.

[0084] The bottle tail label B portion 211 includes a module plate and a plurality of bottle tail label B forming grooves evenly arranged along the length direction of the module plate. The bottle tail label B forming grooves are used to form the bottle tail label B area 402. The number of the bottle tail label B forming grooves is the same as the number of the forming spaces of the eye drop bottle body. Forming ribs are formed on both sides of the bottle tail label B forming grooves.

[0085] The filling and sealing part 212 includes a module plate and a plurality of filling and sealing grooves evenly arranged along the length direction of the module plate. The filling and sealing grooves are used for sealing the tail of the bottle body area. The number of the filling and sealing grooves is the same as the number of the eye drop bottle body forming spaces. The filling and sealing grooves are open at the lower end.

[0086] Furthermore, in the present embodiment, it can also be considered that the left bottle body forming frame 202 / right bottle body forming frame 302 respectively include a vertically arranged head mold backing plate 213 and side clamping plates 214 respectively fixed to both sides of the head mold backing plate 213, and the left bottle body forming mold / right bottle body forming mold are respectively assembled between the head mold backing plate 213 and the side clamping plates 214.

[0087] Furthermore, in the present embodiment, it can also be considered that the bottle body assembly includes a bottle body assembly and a bottle head assembly which are arranged in upper and lower parts, the head mold fixing block includes an upper head mold fixing block 204 and a lower head mold fixing block 205 which are arranged in upper and lower parts, the bottle body assembly includes a bottle bottom 215 and at least one bottle body portion 216 which are sequentially assembled on the upper head mold fixing block 204 from top to bottom, and the bottle head assembly includes a bottle shoulder portion 217, a bottleneck portion 218, and a semicircular sealing cap portion 219 which are sequentially assembled on the lower head mold fixing block 205 from top to bottom.

[0088] The upper head mold fixing block 204 is provided with a mounting cavity for accommodating the bottle bottom 215 and the bottle body 216 on the side facing the eye drop bottle molding space, and the lower head mold fixing block 205 is provided with a mounting cavity for accommodating the bottle shoulder 217, the bottleneck 218 and the semicircular sealing cap 219 on the upper part of the side facing the eye drop bottle molding space. The upper end of the mounting cavity of the lower head mold fixing block 205 is an open structure, and a plurality of vertical grooves are also evenly and correspondingly provided on the two opposite head mold fixing blocks.

[0089] The bottle bottom 215 includes a module plate and a plurality of bottle bottom grooves evenly arranged along the length direction of the module plate. The bottle bottom grooves are used to form the bottom of the bottle body area 403. The number of the bottle bottom grooves is the same as the number of the eye drop bottle body forming spaces, and the lower opening size of the bottle bottom groove is larger than the upper opening size.

[0090] The bottle body portion 216 includes a module plate and a plurality of bottle body grooves evenly arranged along the length direction of the module plate. The bottle body grooves are used to form the bottle body area 403. The number of the bottle body grooves is the same as the number of the eye drop bottle forming spaces, and the bottle body grooves are semi-cylindrical structures.

[0091] The bottle shoulder 217 includes a module plate and a plurality of bottle shoulder grooves uniformly arranged along the length direction of the module plate, the bottle shoulder grooves are used to form the bottle shoulder area 404 and the upper part of the opening twist-off area 405, the number of the bottle shoulder grooves is the same as the number of the eye drop bottle forming spaces, the lower opening size of the bottle shoulder groove is smaller than the upper opening size, wherein the diameter of the opening twist-off area 405 is between 5-10mm, which not only helps a single eye drop bottle to easily twist open the bottle mouth and drip the medicine into the eye, but also can ensure that the dripping amount of each drop of medicine is controlled within the range of 0.05ml±0.01ml, thereby effectively ensuring the therapeutic effect of the product.

[0092] The bottleneck portion 218 includes a module plate and a plurality of bottle mouth grooves evenly arranged along the length direction of the module plate, the bottle mouth grooves are used to form the lower part of the opening twist-off area 405, and the number of the bottle mouth grooves is the same as the number of the eye drop bottle body forming spaces.

[0093] The semicircular sealing cap portion 219 includes a module plate and a plurality of sealing cap grooves evenly arranged along the length direction of the module plate. The sealing cap grooves are used to form a semicircular sealing cap area 406 and a handle area 407. The number of the sealing cap grooves is the same as the number of the forming spaces of the eye drop bottle.

[0094] The bottle tail label A forming groove, bottle tail label B forming groove, filling and sealing groove, bottle bottom groove, bottle body groove, bottle shoulder groove, bottle mouth groove and capping groove are respectively formed with forming ribs for forming the outer contour of the eye drop bottle body 4.

[0095] Furthermore, in this embodiment, it can be considered that the outer walls of the left bottle tail forming frame 201, the left bottle body forming frame 202, the right bottle tail forming frame 301, and the right bottle body forming frame 302 are respectively connected with a cold water connection seat 220, and the cold water connection seat 220 is provided with a water inlet joint 221 and a water outlet joint 222. The left bottle tail forming frame 201 and the left bottle tail forming mold, the left bottle body forming frame 202 and the left bottle body forming mold, and the right bottle tail forming frame 301 and the right bottle tail forming mold are connected. Interconnected cooling water channels are provided between the molding dies and between the right bottle molding frame 302 and the right bottle molding die. The cooling water channels are passage structures starting from the water inlet joint 221, passing through the left bottle tail molding frame 201 and the left bottle tail molding die, or passing through the left bottle body molding frame 202 and the left bottle body molding die, or passing through the right bottle tail molding frame 301 and the right bottle tail molding die, or passing through the right bottle body molding frame 302 and the right bottle body molding die, and ending at the water outlet joint 222. Sealing O-rings are provided between adjacent cooling water channels.

[0096] The heated and melted PE granules are extruded through the billet extrusion die 1 to obtain a cylindrical billet, which is clamped between the left molding die 2 and the right molding die 3. The cylindrical billet is attached to the walls of the left molding die 2 and the right molding die 3 by vacuum adsorption, and then cooled by cooling water in the cooling water channel so that the cylindrical billet is shaped into the required bottle body and bottle tail, and the molding efficiency is high.

[0097] Furthermore, in this embodiment, it can be considered that the outer walls of the left bottle tail forming frame 201, the left bottle body forming frame 202, the right bottle tail forming frame 301, and the right bottle body forming frame 302 are respectively connected with vacuum connection seats 223, and the vacuum connection seats 223 are provided with vacuum joints 224. Vacuum channels that are interconnected are respectively provided between the left bottle tail forming frame 201 and the left bottle tail forming mold, between the left bottle body forming frame 202 and the left bottle body forming mold, between the right bottle tail forming frame 301 and the right bottle tail forming mold, and between the right bottle body forming frame 302 and the right bottle body forming mold, and the vacuum joints 224 are connected with the vacuum channels. Sealing O-rings are provided between adjacent vacuum channels.

[0098] The heated and melted PE granules are extruded through the billet extrusion die 1 to obtain a cylindrical billet, which is clamped between the left molding die 2 and the right molding die 3, and the cylindrical billet is attached to the walls of the left molding die 2 and the right molding die 3 by vacuum adsorption, which helps to form the eye drop bottle and reduce the defective rate.

[0099] Furthermore, in the present embodiment, it can also be considered that the two sides of the tail mold fixing block on the left bottle tail molding frame 201 are respectively protruded to form first guide pins 225, and the two sides of the tail mold fixing block on the right bottle tail molding frame 301 are respectively recessed to form first pin sleeves 303 which are inserted in a one-to-one correspondence with the first guide pins 225, and the two sides of the left bottle body molding frame 202 are respectively protruded to form second guide pins 226, and the two sides of the right bottle body molding frame 302 are respectively recessed to form second pin sleeves 304 which are inserted in a one-to-one correspondence with the second guide pins 226.

[0100] When the left molding mold 2 and the right molding mold 3 are closed to each other, the first guide pin 225 and the first pin sleeve 303 are inserted in a one-to-one correspondence to achieve the positioning between the tail mold fixing blocks on the left bottle tail molding frame and the right bottle tail molding frame, and the second guide pin 226 and the second pin sleeve 304 are inserted in a one-to-one correspondence to achieve the positioning between the left bottle body molding frame and the right bottle body molding frame.

[0101] Furthermore, in the present embodiment, it is also possible to consider that two driving cylinders 5 are relatively provided on the mounting frame, and the free ends of the piston rods of the two driving cylinders 5 are respectively connected to the left molding mold 2 and the right molding mold 3, and the upper end of the left molding mold 2 is provided with a maintenance rod 227, and the upper end of the right molding mold 3 is provided with a lifting eye screw 305.

[0102] In summary, the present invention provides an integrated forming, filling and sealing process, which are all completed under a sterile state, without the need to wash bottles, which helps to save water and other energy consumption, save power investment, and has a small equipment footprint. The production cost of plastic bottles is low, and the finished product has high intrinsic quality and is stable and reliable. It is mainly used in the forming mold of a single-dose eye drop blowing, filling and sealing machine for the packaging of liquid medicines.

[0103] The above embodiments describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A forming mold for a single-dose eye drop blowing, filling and sealing machine, used for forming, filling and sealing eye drop bottles, including a mounting frame, characterized in that: The installation frame is provided with: A blank extrusion die, comprising a blank extrusion die sleeve and a blank extrusion die core which are inserted into one body, wherein the blank extrusion die core can move up and down relative to the blank extrusion die sleeve, and the input end of the blank extrusion die is connected to the output end of the granular material heating extrusion structure; The left forming mold comprises a left bottle tail forming frame and a left bottle body forming frame arranged in a vertical direction, a left bottle tail forming mold and a left bottle body forming mold respectively mounted on the left bottle tail forming frame and the left bottle body forming frame, wherein the left bottle tail forming mold comprises a tail mold fixing block and a bottle tail assembly mounted on the tail mold fixing block, and the left bottle body forming mold comprises a head mold fixing block and a bottle body assembly mounted on the head mold fixing block, and the tail mold fixing block can move left and right relative to the left bottle tail forming frame; The right forming mold comprises a right bottle tail forming frame and a right bottle body forming frame arranged in a vertical direction, and a right bottle tail forming mold and a right bottle body forming mold respectively assembled on the right bottle tail forming frame and the right bottle body forming frame, wherein the right bottle tail forming mold has the same structural composition as the left bottle tail forming mold, the right bottle body forming mold has the same structural composition as the left bottle body forming mold, and the tail mold fixing block on the right bottle tail forming frame is fixedly connected to the right bottle tail forming frame; The left molding die and the right molding die jointly enclose a plurality of eye drop bottle molding spaces, each of which can be used to mold, fill, and seal an eye drop bottle, the blank extrusion die corresponds to the eye drop bottle molding space, the blank extrusion die is correspondingly installed at the output end of the extrusion pipeline, and the blank extrusion die is correspondingly arranged above and below the eye drop bottle molding space; The left bottle tail forming frame / right bottle tail forming frame respectively comprises a horizontally arranged plastic support clamping plate and plastic support mounting blocks respectively fixed to both sides of the lower end of the plastic support clamping plate, the left bottle tail forming mold / right bottle tail forming mold is respectively assembled between the plastic support clamping plate and the plastic support mounting blocks, the left bottle tail forming mold / right bottle tail forming mold is fixed to the tail mold back plate at one side away from the eye drop bottle body forming space, the tail mold back plate is fixed to the tail mold back plate, and the tail mold driving mechanism for driving the tail mold back plate to move left and right is provided on the tail mold back plate on the left bottle tail forming frame; The bottle body assembly includes a bottle body assembly and a bottle head assembly which are arranged in upper and lower parts; the head mold fixing block includes an upper head mold fixing block and a lower head mold fixing block which are arranged in upper and lower parts; the bottle body assembly includes a bottle bottom and at least one bottle body which are sequentially assembled on the upper head mold fixing block from top to bottom; the bottle head assembly includes a bottle shoulder, a neck portion and a semicircular sealing cap portion which are sequentially assembled on the lower head mold fixing block from top to bottom.

2. A forming die for a single-dose eye drop blowing, filling and sealing machine according to claim 1, characterized in that: The blank extrusion die sleeve is a hollow cylindrical structure that penetrates from top to bottom. A flange mounting seat is formed on the outer wall of the blank extrusion die sleeve. An extrusion space for the blank extrusion die core to pass through is formed inside the blank extrusion die sleeve.

3. A forming die for a single-dose eye drop blowing, filling and sealing machine according to claim 2, characterized in that: The blank extrusion die core is a solid structure consisting of an integrally formed threaded portion, a cylindrical main body portion, and an extrusion portion. The blank extrusion die core is provided with a driving rod along its axial direction. The extrusion portion is a truncated cone structure that is small at the top and large at the bottom. The lower portion of the extrusion space is also a truncated cone structure that is small at the top and large at the bottom. A micro-servo mechanism that drives the blank extrusion die core to move up and down is provided in the granular material heating extrusion structure.

4. The forming die for a single-dose eye drop blowing, filling and sealing machine according to claim 1, characterized in that: The bottle tail assembly includes a bottle tail label part A, a bottle tail label part B, and a filling and sealing part which are sequentially assembled on the tail mold fixing block from top to bottom, and the ends of the bottle tail label part A, the bottle tail label part B, and the filling and sealing part facing the molding space of the eye drop bottle body are respectively located on the same vertical plane as the tail mold fixing block.

5. The forming die for a single-dose eye drop blowing, filling and sealing machine according to claim 4, characterized in that: The left bottle body forming frame / right bottle body forming frame respectively include a vertically arranged head mold backing plate and side clamping plates respectively fixed to both sides of the head mold backing plate, and the left bottle body forming mold / right bottle body forming mold are respectively assembled between the head mold backing plate and the side clamping plates.

6. The forming die for a single-dose eye drop blowing, filling and sealing machine according to claim 1, characterized in that: The outer walls of the left bottle tail forming frame, the left bottle body forming frame, the right bottle tail forming frame and the right bottle body forming frame are respectively connected with cold water connecting seats, and the cold water connecting seats are provided with a water inlet joint and a water outlet joint. Interconnected cooling water channels are respectively provided between the left bottle tail forming frame and the left bottle tail forming mold, between the left bottle body forming frame and the left bottle body forming mold, between the right bottle tail forming frame and the right bottle tail forming mold, and between the right bottle body forming frame and the right bottle body forming mold.

7. The forming die for a single-dose eye drop blowing, filling and sealing machine according to claim 1, characterized in that: The outer walls of the left bottle tail forming frame, the left bottle body forming frame, the right bottle tail forming frame and the right bottle body forming frame are respectively connected with vacuum connecting seats, and the vacuum connecting seats are provided with vacuum joints. Vacuum channels that are interconnected are respectively provided between the left bottle tail forming frame and the left bottle tail forming mold, between the left bottle body forming frame and the left bottle body forming mold, between the right bottle tail forming frame and the right bottle tail forming mold, and between the right bottle body forming frame and the right bottle body forming mold, and the vacuum joints are connected with the vacuum channels.

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