A bottle blowing device

Abstract

The present invention provides a bottle blowing device, which relates to the technical field of plastic molding and includes: a mold mechanism, which includes five modules, the spacing distance between each module is adjustable, and a plurality of half mold bins are arrayed on the adjacent sides of the modules, and half bottle necks are provided at their upper ends; a bottle placing mechanism, which includes bottle placing tubes that are located above the first mold block, are arrayed in four rows along the width direction of the first mold block, and are arrayed in multiple columns along the length direction of the first mold block, and the bottle placing tubes are all movably arranged along the length direction; an air inflation mechanism, which includes inflation tubes that are matched in number with the bottle placing tubes, the inflation tubes are correspondingly arranged at the same side of the bottle placing tubes at intervals and in parallel along the length direction, the spacing is fixed and they are matched with each other, the inflation tubes are all movably arranged along their own axial directions, and the lower ends of the inflation tubes are all connected with fitting heads for fitting with the upper ends of the preforms. The present invention can improve the bottle blowing efficiency and bottle blowing quality, reduce the maintenance difficulty of the mold driving structure, and has a small floor area, and has strong practicability.

Description

Technical Field

[0001] The present application relates to the field of plastic molding, especially blow molding technology, and specifically relates to a blow molding device. Background Art

[0002] Blow molding is a plastic processing technology used to manufacture hollow plastic products such as plastic bottles, plastic containers, and other packaging materials. It involves placing a heated and softened preform into a mold and then injecting compressed air into it, causing the plastic to expand and conform to the inner wall of the mold, and finally cooling and shaping into the desired form. In current highly automated edible oil production lines, preforms generally enter the blow molding machine in a row, and the blow molding machine is equipped with a row of compressed air injection mechanisms for blow molding the preforms in sequence, that is, only one row of preforms can be processed each time, resulting in low efficiency. Secondly, when multiple rows of compressed air injection mechanisms are set to blow multiple rows of preforms simultaneously, in order to meet the stroke of multiple rows of molds in the blow molding machine, it is easy to cause the problem of a large floor area of the blow molding machine, and each row of molds requires a separate drive structure to drive, with a relatively complex internal structure and troublesome maintenance of the drive structure. Thirdly, in conventional production lines, there is a long time interval between the transfer of preforms from the heating device to the blow molding machine by the transfer mechanism, and the temperature of the preforms is likely to decrease during the transfer process, affecting the blow molding quality. Summary of the Invention

[0003] To solve the above-mentioned defects in the related prior art, the present application provides a blow molding device that can improve the blow molding efficiency and quality, reduce the maintenance difficulty of the mold drive structure, and has a small floor area, with strong practicality.

[0004] To achieve the above object, the present invention adopts the following technologies:

[0005] A blow molding device, comprising:

[0006] A mold mechanism, including five modules arranged in parallel and at intervals, the interval distance between each module is adjustable. The module in the middle is the first mold block, the modules adjacent to both sides of the first mold block are the second mold blocks, and the two outermost modules are the third mold blocks. Multiple semi-mold cavities with matching quantities and positions are arrayed on both side surfaces of the second mold block and on the side surfaces of the first mold block and the third mold block adjacent to the second mold block, and semi-neck openings penetrating the top surface of the module are provided at their upper ends.

[0007] A bottle placing mechanism, including bottle placing tubes arranged in four rows along the width direction of the first mold block and multiple columns along the length direction of the first mold block above the first mold block. The number and spacing of the bottle placing tubes in the column direction match the semi-mold cavities. The axes of the middle two rows of bottle placing tubes are coplanar with both side surfaces of the first mold block respectively, and the bottle placing tubes are all arranged to move along the length direction.

[0008] The inflation mechanism includes inflation tubes whose quantity matches that of the bottle discharging tubes. The inflation tubes are arranged in parallel at intervals along the length direction on the same side of the bottle discharging tubes one by one, with a fixed spacing and matching each other. The inflation tubes are all arranged to move along their own axial directions. The lower ends of the inflation tubes are all connected with fitting heads for fitting with the upper ends of the preforms.

[0009] Further, mounting bumps are provided at both ends of the first mold block. The mounting bumps are respectively fixedly sleeved on two slide bars arranged parallel to the width direction. First sliding bumps are provided at both ends of the second mold block. The first sliding bumps are respectively slidably sleeved on the two slide bars. Second sliding bumps are provided at both ends of the third mold block. The second sliding bumps are respectively slidably sleeved on the two slide bars. First springs are connected between adjacent mounting bumps and first sliding bumps, and between adjacent first sliding bumps and second sliding bumps. The first springs are all coaxially sleeved on the peripheries of the slide bars. When the first springs are in their original states, there is a first predetermined distance between the third mold block and the first mold block and the second mold block.

[0010] Further, the mounting bumps are all connected with mounting columns. The mounting columns are all connected with mounting cross bars. Mounting vertical bars are connected to both ends of the mounting cross bars. The mounting vertical bars connected to one mounting cross bar are respectively connected to both ends of one slide bar. Two first linear cylinders with opposite driving directions and both parallel to the width direction are provided on one of the mounting cross bars. Driving bumps are provided at one end of the third mold block respectively. The driving shafts of the first linear cylinders are respectively connected to the driving bumps.

[0011] Further, four groups of cylindrical bins are provided on the upper surfaces of the second mold block and the third mold block. The cylindrical bins in the same group are arranged coaxially in an array along the length direction, and the number of their arrays and the array spacing both match those of the semi-mold bins. The cylindrical bins are all arranged to move along the width direction. A pair of moving disks are coaxially provided in each cylindrical bin. The edges of the moving disks are in sliding contact with the inner walls of the cylindrical bins and their contact surfaces are all airtight. A pair of abutting columns are coaxially provided on the opposite sides of the pair of moving disks. Through holes for extending rods are coaxially penetrated at both ends of the cylindrical bins. A pair of driving rods are coaxially connected to the opposite sides of the pair of moving disks. The driving rods respectively pass through the corresponding through holes for extending rods. Third springs are connected between the opposite sides of the pair of moving disks and both ends of the cylindrical bins. The third springs are coaxially provided on the peripheries of the driving rods. The third springs are always in a compressed state. The ends of the driving rods extending out of the through holes for extending rods are all connected with folding rods. The folding rods are all connected with driven strips. The driven strips matching the pair of moving disks are arranged coaxially along the length direction. Semi-circular strips are connected to the opposite ends of the driven strips, and the connection points are located in the middle of the semi-circular strips. The central axes of the semi-circular strips are all parallel to the height direction of the first mold block. There is a second predetermined distance between the semi-circular strips and the upper surface of the first mold block. First communication pipes are communicated in the middle of the cylindrical bins. The first communication pipes of the cylindrical bins in the same group are communicated with the same second communication pipe. The second communication pipes are all communicated with first ventilation hoses. The first ventilation hoses are all used for communicating with an external gas conveying device.

[0012] Furthermore, a group of guide rods are provided on the upper surfaces of the second mold block and the third mold block along the width direction, a sliding plate is slidably sleeved on each group of guide rods, a second spring is coaxially sleeved on the circumferential side of the guide rod, both ends of the second spring are respectively connected to the end of the guide rod facing away from the first mold block and the sliding plate, when the second spring is in an original state, the sliding plate and the end of the guide rod on which it is located facing the first mold block are spaced apart by a third predetermined distance, each group of columnar bins is correspondingly arranged on the sliding plate, and a limiting arc ring is coaxially provided on the circumferential side of the semi-neck opening of the upper surface of the first mold block and the second mold block facing away from the first mold block.

[0013] Furthermore, the inner walls of the cylindrical bin are provided with limiting convex strips along their own axis, and the edges of the movable disk are provided with limiting grooves parallel to their own axis. The limiting grooves pass through the movable disk, and the limiting grooves are slidably matched with the corresponding limiting convex strips, and their matching surfaces are airtight.

[0014] Furthermore, movable plates are arranged parallel and at intervals above the upper surface of the first mold block, the upper end of the bottle placing tube is connected to the movable plate and connected to the upper surface of the movable plate, a first ring plate is vertically connected to the circumferential side of the upper surface of the movable plate, both sides of the first ring plate are connected to matching strips, the matching strips are slidably matched with two matching rods parallel to the length direction, and fixed strips are arranged on the other two sides of the first ring plate, two fixed strips are connected at both ends of the matching rods, one of the fixed strips is connected to a first support column, the first support columns are connected to another mounting horizontal bar, the other fixed strip is connected to a second support column, the second support columns are connected to the mounting plate, one of the fixed strips is provided with a second linear cylinder with a driving direction parallel to the length direction, and the driving shaft of the second linear cylinder is connected to the first ring plate.

[0015] Furthermore, a first mounting frame is provided under the movable plate, and the first mounting frame is provided with ventilation valves whose number matches that of the inflation pipes, the upper ends of the inflation pipes are connected one-to-one with the output ends of the ventilation valves, and the input ends of the ventilation valves are connected with the second ventilation hoses, and the lower end of one of the fixed strips is connected with a cable tray, and the second ventilation hoses are all passed through the cable tray, and the second ventilation hoses are used to connect with the external compressed air delivery mechanism, and a third linear cylinder is vertically provided on the movable plate, and the driving shaft of the third linear cylinder is connected to the first mounting frame.

[0016] Furthermore, fixed plates are arranged in parallel at intervals above the upper surface of the movable plate, and heating tubes whose number matches the bottle placing tubes are vertically connected to the lower surface of the fixed plate. The upper ends of the heating tubes are connected to the upper surface of the fixed plate, and the heating tubes and the bottle placing tubes are arranged in the same array, and the two rows of heating tubes in the middle section of the array along the width direction are coaxial with the half-bottle neck of the first mold block in a one-to-one correspondence. The inner walls of the heating tubes are provided with heating grooves, and the heating grooves are provided with heating components for heating. A second ring plate is vertically connected to the circumferential side of the lower surface of the fixed plate, and the fixed bars are connected to two third support columns, and the third support columns are connected to the second ring plate.

[0017] Furthermore, above the fixed plate, there are also bottle feeding pipes whose quantity matches that of the bottle placing pipes. The bottle feeding pipes and the gas charging pipes are coaxially arranged in one-to-one correspondence. The bottle feeding pipes are installed on the second mounting rack, and two fourth support columns are connected to each of the matching strips, and the fourth support columns are all connected to the second mounting rack.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. By providing the first mold block, the second mold block, and the third mold block, the bottle blowing work can be carried out on multiple rows of preforms simultaneously, improving the bottle blowing efficiency.

[0020] 2. Half mold bins are provided on both sides of the first mold block and the second mold block, reducing the floor area of the bottle blowing equipment.

[0021] 3. By providing the first spring, only the third mold block needs to be driven during bottle blowing, reducing the maintenance difficulty of the mold driving structure.

[0022] 4. By providing the heating pipe, the temperature lost by the preforms during the transfer process is compensated, improving the bottle blowing quality. Description of the Drawings

[0023] Figure 1 is a three-dimensional schematic diagram of the bottle blowing equipment according to the embodiment of the present application.

[0024] Figure 2 is a three-dimensional schematic diagram of the first mold block, the second mold block, and the third mold block according to the embodiment of the present application.

[0025] Figure 3 is a three-dimensional schematic diagram of the cylindrical bin and its affiliated mechanisms according to the embodiment of the present application.

[0026] Figure 4 is a cross-sectional view of the cylindrical bin according to the embodiment of the present application.

[0027] Figure 5 is a three-dimensional schematic diagram of the moving plate according to the embodiment of the present application.

[0028] Figure 6 is an exploded structural schematic diagram of the moving plate, the air vent valve, the wire bundling disc, and the first mounting rack according to the embodiment of the present application.

[0029] Figure 7 is a partial cross-sectional three-dimensional schematic diagram of the bottle feeding pipe, the heating pipe, and the fixed plate according to the embodiment of the present application.

[0030] Markings in the figure: 1 - First die block, 11 - Second die block, 12 - Third die block, 13 - Half die bin, 14 - Half bottleneck, 15 - Mounting bump, 16 - Slide bar, 17 - First sliding bump, 18 - Second sliding bump, 19 - First spring, 110 - Mounting post, 111 - Mounting cross bar, 112 - Mounting vertical bar, 113 - First linear cylinder, 114 - Driving bump, 2 - Bottle placing tube, 21 - Moving plate, 22 - First ring plate, 23 - Fitting strip, 24 - Fitting rod, 25 - Fixed strip, 26 - First support post, 27 - Second support post, 28 - Second linear cylinder, 29 - Fixed plate, 210 - Heating tube, 211 - Heating groove, 212 - Second ring plate, 213 - Third support post, 214 - Bottle feeding tube, 215 - Second mounting bracket, 216 - Fourth support post, 3 - Inflating tube, 31 - Fitting head, 32 - First mounting bracket, 33 - Vent valve, 34 - Second ventilation hose, 35 - Cable reel, 36 - Third linear cylinder, 4 - Cylindrical bin, 41 - Moving disk, 42 - Supporting post, 43 - Rod extending port, 44 - Driving rod, 45 - Folding rod, 46 - Driven strip, 47 - Semi - arc strip, 48 - First connecting tube, 49 - Second connecting tube, 410 - First ventilation hose, 411 - Mounting plate, 412 - Air pump, 413 - Air chamber, 414 - Working tube, 415 - Guide rod, 416 - Sliding plate, 417 - Second spring, 418 - Limiting arc ring, 419 - Limiting rib, 420 - Limiting groove, 421 - Third spring. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will describe the implementation modes of the present invention in detail with reference to the accompanying drawings. However, the embodiments described herein are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0032] As Figure 1 shown, this embodiment provides a bottle blowing device, including a die mechanism, a bottle placing mechanism, and an inflating mechanism.

[0033] Specifically, as Figure 1As shown, the mold mechanism includes five parallel and spaced modules. The modules have the same rectangular block shape, and the spacing distance between each module is adjustable. The module in the middle is the first mold block 1. The modules adjacent to both sides of the first mold block 1 are the second mold blocks 11. The two outermost modules are the third mold blocks 12. Multiple semi-mold bins 13 with matching quantities and positions are arrayed on both side faces of the second mold block 11 and on the side faces of the first mold block 1 and the third mold block 12 adjacent to the second mold block 11. In this example, four semi-mold bins 13 are opened on each face. The semi-mold bins 13 on the same face are arrayed along the length direction, and the array spacing of the semi-mold bins 13 on different faces is matched to enable the semi-mold bins 13 on opposite faces to be combined to form four mold bin bodies. A semi-neck opening 14 penetrating the top surface of the module is provided at the upper end of each of them. The inner diameter of the semi-neck opening 14 matches the radius of the preform, so that when two semi-neck openings 14 cooperate to form an entire neck passage opening, the preform body of the preform can pass through the neck passage opening, while the convex ring at the upper end of the preform can be stuck outside the neck passage opening. More specifically, micropores penetrating to the outside can be provided on the inner wall of the semi-mold bin 13 to facilitate the blow molding operation.

[0034] Specifically, as Figure 1 shown, the bottle placing mechanism includes bottle placing tubes 2 that are located above the first mold block 1, are arrayed in four rows along the width direction, and are arrayed in multiple columns along the length direction. In this example, there are four columns. More specifically, the inner diameter of the bottle placing tubes 2 matches the radius of the preform, so that the preform can move coaxially within the bottle placing tubes 2. The number and spacing of the bottle placing tubes 2 in the column direction match those of the semi-mold bins 13. The axes of the two middle rows of bottle placing tubes 2 are coplanar with the two side faces of the first mold block 1 respectively. The bottle placing tubes 2 are all arranged to move along the length direction.

[0035] Specifically, as Figure 1 shown, the air inflation mechanism includes inflation tubes 3 with a quantity matching that of the bottle placing tubes 2. The inflation tubes 3 are arranged in parallel at intervals along the length direction on the same side of the bottle placing tubes 2 one by one, with a fixed spacing and being mutually matched, that is, the spacing between the inflation tubes 3 and the bottle placing tubes 2 is equal, and the inflation tubes follow the bottle placing tubes 2 to move along the length direction. The inflation tubes 3 are all arranged to move along their own axial directions. A fitting head 31 is connected to the lower end of each inflation tube 3. The fitting head 31 is used to cooperate with the upper end of the preform so that compressed air can be smoothly fed into the preform from the inflation tubes 3.

[0036] During operation, move the positions of the second die block 11 and the third die block 12 so that the two side surfaces of the first die block 1 are respectively in contact with the corresponding side surfaces of the second die block 11, and the other corresponding side surface of the second die block 11 is in contact with the corresponding side surface of the third die block 12, thereby forming sixteen die cavities in the half die cavity 13 and sixteen bottleneck channel openings in the half bottleneck 14; move the bottle placing tube 2 along the length direction so that the bottle placing tube 2 is coaxially aligned with the bottleneck channel openings one by one, put preforms into the bottle placing tube 2, the preforms fall into the die cavities through the bottle placing tube 2, and the convex rings at the upper ends of the preforms stay at the bottleneck channel openings; move the bottle placing tube 2 along the length direction again so that the air charging tube 3 is coaxially aligned with the bottleneck channel openings one by one, move the air charging tube 3 downward so that the fitting head 31 is fitted with the upper end of the preform, and fill compressed air into the preform through the air charging tube 3, and the preform expands to form a plastic bottle in the die cavity; move the air charging tube 3 upward, move the positions of the second die block 11 and the third die block 12 so that the formed plastic bottle falls out from below the half die cavity 13 between the first die block 1, the second die block 11, and the third die block 12, and move the positions of the second die block 11 and the third die block 12 again to perform the next bottle blowing operation.

[0037] Preferably, as Figure 2 shown, installation lugs 15 are provided at both ends of the first die block 1, the installation lugs 15 are respectively fixedly sleeved on two slide bars 16 arranged parallel to the width direction, first sliding lugs 17 are provided at both ends of the second die block 11, the first sliding lugs 17 are respectively slidably sleeved on the two slide bars 16, second sliding lugs 18 are provided at both ends of the third die block 12, the second sliding lugs 18 are respectively slidably sleeved on the two slide bars 16, first springs 19 are connected between adjacent installation lugs 15 and first sliding lugs 17 and between adjacent first sliding lugs 17 and second sliding lugs 18, the first springs 19 are coaxially sleeved on the peripheries of the slide bars 16, when the first springs 19 are in the original state, a first predetermined distance is provided between the third die block 12 and the first die block 1 and the second die block 11, and the first predetermined distance is used to enable the formed plastic bottle to smoothly fall out from below the half die cavity 13. With such a design, only by moving the third die block 12 can the combination and separation of the first die block 1, the second die block 11, and the third die block 12 be achieved, that is, only the driving structure of the third die block needs to be provided, reducing the maintenance difficulty of the die driving mechanism.

[0038] Preferably, as Figure 2As shown, mounting bumps 15 are all connected with mounting posts 110, the mounting posts 110 are all connected with mounting cross bars 111, both ends of the mounting cross bars 111 are connected with mounting vertical bars 112, the mounting vertical bars 112 connected to one mounting cross bar 111 are respectively connected to both ends of a sliding rod 16. Two first linear cylinders 113 with opposite driving directions and both parallel to the width direction are provided on one of the mounting cross bars 111. Driving bumps 114 are provided at one end of the third die block 12 respectively. The driving shafts of the first linear cylinders 113 are respectively connected to the driving bumps 114. The first linear cylinders 113 are used to drive the third die block 12 to move.

[0039] Preferably, as Figure 3 and Figure 4 shown, four groups of cylindrical bins 4 are provided on the upper surfaces of the second die block 11 and the third die block 12. The cylindrical bins 4 in the same group are arranged coaxially in an array along the length direction, and the number of arrays and the array pitch thereof are both matched with the semi-die bin 13, that is, the cross section of the cylindrical bin 4 in the middle of its central axis is coplanar with the semi-die bin 13. The cylindrical bins 4 are all arranged to move along the width direction. A pair of moving disks 41 are coaxially provided in the cylindrical bins 4. The edges of the moving disks 41 are in sliding contact with the inner walls of the cylindrical bins 4 and their contact surfaces are airtight. A pair of abutting posts 42 are coaxially provided on the opposite surfaces of the pair of moving disks 41. Through holes 43 are coaxially penetrated through both ends of the cylindrical bins 4. A pair of driving rods 44 are coaxially connected to the opposite surfaces of the pair of moving disks 41 respectively. The driving rods 44 respectively pass through the corresponding through holes 43. Third springs 421 are connected between the opposite surfaces of the pair of moving disks 41 and both ends of the cylindrical bins 4. The third springs 421 are coaxially arranged on the peripheries of the driving rods 44 and are always in a compressed state. The ends of the driving rods 44 extending out of the through holes 43 are all connected with folding rods 45. The folding rods 45 are all connected with driven strips 46. The driven strips 46 matching the pair of moving disks 41 are coaxially arranged along the length direction, and their opposite ends are all connected with semi-circular strips 47 and the connection points are located in the middle of the semi-circular strips 47. The central axes of the semi-circular strips 47 are all parallel to the height direction of the first die block 1. A second predetermined distance is provided between the semi-circular strips 47 and the upper surface of the first die block 1. This second predetermined distance needs to be determined according to the depth of the mouth of the formed plastic bottle. Specifically, the radius of the semi-circular strip 47 is matched with the outer diameter of the preform, so that the ring formed by the two semi-circular strips can pass through the embryo of the preform, and the convex ring at the upper end of the preform can be stuck on the ring. First communication pipes 48 are all communicated in the middle of the cylindrical bins 4. The first communication pipes 48 of the cylindrical bins 4 in the same group are communicated with the same second communication pipe 49. The second communication pipes 49 are all communicated with first ventilation hoses 410. One of the mounting cross bars 111 is connected with a mounting plate 411. An air pump 412 and an air chamber 413 are provided on the mounting plate 411. A working pipe 414 is communicated between the working end of the air pump 412 and the air chamber 413. The first ventilation hoses 410 are communicated to the air chamber 413.

[0040] During operation, before the first mold block 1, the second mold block 11, and the third mold block 12 are combined, the air pump 412, the working pipe 414, the air chamber 413, the first ventilation hose 410, the second connecting pipe 49, and the first connecting pipe 48 are used to evacuate the space between the moving plate 41 in the cylindrical chamber 4. The moving plate 41 is driven by air pressure to reduce the distance between them, and under the drive of the third spring 421, the abutting column 42 contacts at the exact center of the cylindrical chamber 4. At this time, the two semi-circular strips 47 form a ring; during the process of moving the second mold block 11 and the third mold block 12, the cylindrical chamber 4 is moved simultaneously. After the first mold block 1, the second mold block 11, and the third mold block 12 are combined, the rings formed by the semi-circular strips 47 are coaxially located above the bottleneck channel openings one by one. When the preform falls, the convex ring at the upper end of the preform can stay on the ring formed by the semi-circular strips 47; when the bottle blowing is completed and the first mold block 1, the second mold block 11, and the third mold block 12 are separated, the cylindrical chamber 4 is moved so that the ring drives the formed plastic bottle away from the inner wall of the semi-mold chamber 13, preventing the plastic bottle from staying in the semi-mold chamber 13 and being unable to fall; at this time, the space between the moving plate 41 in the cylindrical chamber 4 is evacuated, the moving plate 41 is driven by air pressure to increase the distance between them, the third spring 421 is compressed, and the semi-circular strips 47 are separated, and the formed plastic bottle can fall smoothly.

[0041] Preferably, as Figure 1 and Figure 3 and Figure 4As shown, a set of guide rods 415 are provided on the upper surfaces of the second mold block 11 and the third mold block 12 along the width direction. A sliding plate 416 is slidably sleeved on each set of guide rods 415. A second spring 417 is coaxially sleeved on the periphery of each guide rod 415. The two ends of the second spring 417 are respectively connected to the end of the guide rod 415 facing away from the first mold block 1 and the sliding plate 416. When the second spring 417 is in its original state, there is a third predetermined distance between the sliding plate 416 and the end of the guide rod 415 where it faces the first mold block 1. This third predetermined distance is used to prevent the sliding plate 416 from covering the semi-neck opening 14. A set of cylindrical bins 4 are correspondingly provided on the sliding plates 416. Limiting arc rings 418 are coaxially provided on the peripheries of the semi-neck openings 14 on the upper surfaces of the first mold block 1 and the side of the second mold block 11 facing away from the first mold block 1. With such a design, there is no need to separately provide a driving structure for the cylindrical bins 4. During the process of moving the second mold block 11 and the third mold block 12 to merge the first mold block 1, the second mold block 11, and the third mold block 12, the ring formed by the semi-circular strips 47 will first contact the limiting arc ring 418, and under the restriction of the limiting arc ring 418, the second spring 417 will be compressed and the sliding plate 416 will move. After merging, the rings formed by the semi-circular strips 47 will be coaxially located above the bottleneck channel openings one by one. During the process of separating the first mold block 1, the second mold block 11, and the third mold block 12, the second spring 417 drives the sliding plate 416 to automatically return to its original position, so that the rings formed by the semi-circular strips 47 are located between the two semi-mold bins 13. At this time, driving the separation of the semi-circular strips 47 can enable the formed plastic bottles to fall smoothly.

[0042] Preferably, as Figure 4 shown, limiting convex strips 419 are provided on the inner walls of the cylindrical bins 4 along their axial directions. Limiting grooves 420 parallel to their axial directions are respectively formed at the edges of the moving disks 41. The limiting grooves 420 penetrate through the moving disks 41. The limiting grooves 420 are respectively in sliding fit with the corresponding limiting convex strips 419, and their mating surfaces have airtightness. The limiting convex strips 419 and the limiting grooves 420 are used to prevent the moving disks 41 from rotating around their central axes.

[0043] Preferably, as Figure 5As shown, a moving plate 21 is provided parallelly at an interval above the upper surface of the first die block 1. The upper end of the bottle placing pipe 2 is connected to the moving plate 21 and communicated to the upper surface of the moving plate 21. A first ring plate 22 is vertically connected to the periphery of the upper surface of the moving plate 21. Two cooperation bars 23 are connected to both sides of the first ring plate 22. The cooperation bars 23 are respectively slidably matched with two cooperation rods 24 parallel to the length direction. Fixed bars 25 are provided outside the other two sides of the first ring plate 22. Both ends of the cooperation rod 24 are respectively connected to the two fixed bars 25. One of the fixed bars 25 is connected with a first support column 26. The first support columns 26 are all connected to another installation cross bar 111. The other fixed bar 25 is connected with a second support column 27. The second support columns 27 are all connected to the installation plate 411. A second linear cylinder 28 with a driving direction parallel to the length direction is provided on one of the fixed bars 25. The driving shaft of the second linear cylinder 28 is connected to the first ring plate 22. The second linear cylinder 28 is used to drive the moving plate 21 to move, and thus drive the bottle placing pipe 2 to move.

[0044] Preferably, as Figure 6 shown, a first installation frame 32 is provided below the moving plate 21. An air vent valve 33 with a quantity matching that of the air charging pipes 3 is provided on the first installation frame 32. The upper ends of the air charging pipes 3 are correspondingly communicated with the output ends of the air vent valves 33 one by one. The input end of the air vent valve 33 is communicated with a second ventilation hose 34. The lower end of one of the fixed bars 25 is connected with a wire bundling disc 35. The second ventilation hoses 34 are all arranged through the wire bundling disc 35. The second ventilation hoses 34 are used to be communicated with an external compressed air conveying mechanism. A third linear cylinder 36 is vertically provided on the moving plate 21. The driving shaft of the third linear cylinder 36 is connected to the first installation frame 32. The third linear cylinder 36 is used to drive the first installation frame 32 to move, and thus drive the air charging pipes 3 to move.

[0045] Preferably, as Figure 1 and Figure 7As shown in the figure, a fixed plate 29 is provided above the upper surface of the moving plate 21 at intervals in parallel. A heating pipe 210 with a quantity matching that of the bottle placing pipe 2 is vertically connected to the lower surface of the fixed plate 29. The upper end of the heating pipe 210 communicates with the upper surface of the fixed plate 29. The heating pipes 210 and the bottle placing pipes 2 are arranged in the same array, and the two rows of heating pipes 210 in the middle section of the array along the width direction are coaxially corresponding to the semi-bottle necks 14 on the first die block 1 one by one. Heating grooves 211 are formed in the inner walls of the heating pipes 210, and heating components for heating are arranged in the heating grooves 211. A second ring plate 212 is vertically connected to the periphery of the lower surface of the fixed plate 29. Two third support columns 213 are connected to each fixing strip 25, and the third support columns 213 are all connected to the second ring plate 212. With such a design, when the charging pipe 3 inflates the preforms, the next batch of preforms can be put into the heating pipes 210. The heating pipes 210 can reheat the next batch of preforms, making up for the temperature lost during the transfer of the preforms and improving the blow molding quality. When the current preforms are blown and fall out of the equipment, the bottle placing pipe 2 is moved, and the preforms in the heating pipes 210 will fall into the lower die cavity through the bottle placing pipe 2.

[0046] Preferably, as Figure 1 and Figure 7 shown in the figure, a bottle feeding pipe 214 with a quantity matching that of the bottle placing pipe 2 is further provided above the fixed plate 29. The bottle feeding pipes 214 and the charging pipes 3 are coaxially arranged one by one. The bottle feeding pipes 214 are installed on the second mounting frame 215. Two fourth support columns 216 are connected to each cooperating strip 23, and the fourth support columns 216 are all connected to the second mounting frame 215. During operation, when the preforms in the heating pipes 210 fall into the lower die cavity through the bottle placing pipe 2, preforms can be put into the bottle feeding pipes 214 at the same time. When the bottle placing pipe 2 is moved for blow molding work, the bottle feeding pipes 214 move along with the bottle placing pipe 2, and the preforms therein will enter the heating pipes 210. With such a design, the time consumed for directly putting preforms into the heating pipes 210 can be saved, the heating time of the preforms in the heating pipes 210 can be increased and stabilized, enabling the preforms to be heated more stably and improving the blow molding quality. More specifically, putting preforms into the bottle feeding pipes 214 can be achieved by using a grasping mechanism to grasp from the track, or by pre-placing the preforms in a supporting tooling and feeding them above the bottle feeding pipes 214 using the supporting tooling. These all belong to the prior art and will not be elaborated here.

[0047] The above are only the preferred embodiments of the present application and are not used to limit the present application. Obviously, those skilled in the art can make various modifications and deformations to the present application without departing from the spirit and scope of the present application.

Claims

1. A bottle blowing device, characterized in that, Comprising: A mold mechanism, including five parallel and spaced modules, the spacing distance between each module is adjustable, the module located in the middle is the first mold block (1), the modules adjacent to both sides of the first mold block (1) are the second mold blocks (11), the two outermost modules are the third mold blocks (12), multiple semi-mold bins (13) with matching quantities and positions are arrayed on both side surfaces of the second mold block (11) and on the side surfaces of the first mold block (1) and the third mold block (12) adjacent to the second mold block (11), and semi-neck openings (14) penetrating the top surface of the module are provided at their upper ends; A bottle placing mechanism, including bottle placing tubes (2) that are arranged in four rows along the width direction of the first mold block (1) and multiple columns along the length direction of the first mold block (1) above the first mold block (1), the quantity and spacing of the bottle placing tubes (2) in the column direction match those of the semi-mold bins (13), the axes of the middle two rows of bottle placing tubes (2) are coplanar with the two side surfaces of the first mold block (1) respectively, and the bottle placing tubes (2) are all movably arranged along the length direction; An inflation mechanism, including inflation tubes (3) with a quantity matching that of the bottle placing tubes (2), the inflation tubes (3) are correspondingly arranged at the same side of the bottle placing tubes (2) at intervals and in parallel along the length direction with a fixed spacing and are mutually matched, the inflation tubes (3) are all movably arranged along their own axial directions, and fitting heads (31) are connected to the lower ends of the inflation tubes (3) for fitting with the upper ends of the preforms; On the upper surfaces of the second die block (11) and the third die block (12), four groups of cylindrical bins (4) are provided. The cylindrical bins (4) in the same group are arranged coaxially in an array along the length direction, and the number of arrays and the array pitch thereof are both matched with the semi-die bin (13). The cylindrical bins (4) are all arranged to move along the width direction. A pair of moving disks (41) are coaxially arranged in each cylindrical bin (4). The edges of the moving disks (41) are in sliding contact with the inner walls of the cylindrical bins (4), and the contact surfaces thereof are all airtight. On the opposite sides of the pair of moving disks (41), abutting posts (42) are coaxially provided. Through holes (43) are coaxially penetrated at both ends of the cylindrical bin (4). On the opposite sides of the pair of moving disks (41), driving rods (44) are coaxially connected. The driving rods (44) are respectively inserted through the corresponding through holes (43). Between the opposite sides of the pair of moving disks (41) and the two ends of the cylindrical bin (4), third springs (421) are connected. The third springs (421) are coaxially arranged on the peripheries of the driving rods (44) and are always in a compressed state. At the ends of the driving rods (44) extending out of the through holes (43), folding rods (45) are connected. The folding rods (45) are all connected with driven strips (46). The driven strips (46) matching the pair of moving disks (41) are coaxially arranged along the length direction. At their opposite ends, semi-circular strips (47) are connected, and the connection points are located in the middle of the semi-circular strips (47). The central axes of the semi-circular strips (47) are all parallel to the height direction of the first die block (1). There is a second predetermined distance between the semi-circular strips (47) and the upper surface of the first die block (1). First communication pipes (48) are communicated in the middle of each cylindrical bin (4). The first communication pipes (48) of the cylindrical bins (4) in the same group are communicated with the same second communication pipe (49). The second communication pipes (49) are all communicated with first ventilation hoses (410). The first ventilation hoses (410) are all used for communicating with an external gas conveying device; On the upper surfaces of the second die block (11) and the third die block (12), a group of guide rods (415) are provided along the width direction. A sliding plate (416) is slidably sleeved on each group of guide rods (415). Second springs (417) are coaxially sleeved on the peripheries of the guide rods (415). The two ends of the second springs (417) are respectively connected with the end of the guide rod (415) facing away from the first die block (1) and the sliding plate (416). When the second springs (417) are in the original state, there is a third predetermined distance between the sliding plate (416) and the end of the guide rod (415) facing the first die block (1) where it is located. Each group of cylindrical bins (4) is correspondingly arranged on the sliding plate (416). Limiting arc rings (418) are coaxially arranged around the semi-bottleneck openings (14) on the upper surfaces of the first die block (1) and the side of the second die block (11) facing away from the first die block (1); During the process of moving the second mold block (11) and the third mold block (12) to merge the first mold block (1), the second mold block (11), and the third mold block (12), the ring formed by the semi-circular strip (47) will first contact the limit arc ring (418), and under the restriction of the limit arc ring (418), the second spring (417) will be compressed, the sliding plate (416) will move, and after merging, the rings formed by the semi-circular strip (47) will be coaxially located above the bottleneck channel openings one by one; during the process of separating the first mold block (1), the second mold block (11), and the third mold block (12), the second spring (417) will drive the sliding plate (416) to automatically return to its original position, so that the rings formed by the semi-circular strip (47) are located between the two semi-mold bins (13). At this time, driving the separation of the semi-circular strip (47) can make the formed plastic bottle fall smoothly.

2. The blow molding device according to claim 1, characterized in that, Installation bumps (15) are provided at both ends of the first mold block (1). The installation bumps (15) are respectively fixedly sleeved on two slide bars (16) arranged parallel to the width direction. First sliding bumps (17) are provided at both ends of the second mold block (11). The first sliding bumps (17) are respectively slidably sleeved on two slide bars (16). Second sliding bumps (18) are provided at both ends of the third mold block (12). The second sliding bumps (18) are respectively slidably sleeved on two slide bars (16). A first spring (19) is connected between the adjacent installation bump (15) and the first sliding bump (17), and between the adjacent first sliding bump (17) and the second sliding bump (18). The first springs (19) are coaxially sleeved on the peripheral sides of the slide bars (16). When the first springs (19) are in their original states, a first predetermined distance is spaced between the third mold block (12) and the first mold block (1) and the second mold block (11).

3. The blow molding device according to claim 2, wherein The installation bumps (15) are respectively connected with installation columns (110). The installation columns (110) are respectively connected with installation cross bars (111). Installation vertical bars (112) are connected to both ends of the installation cross bars (111). The installation vertical bars (112) connected to one installation cross bar (111) are respectively connected to both ends of one slide bar (16). Two first linear cylinders (113) with opposite driving directions and both parallel to the width direction are provided on one of the installation cross bars (111). Driving bumps (114) are provided at one end of the third mold block (12). The driving shafts of the first linear cylinders (113) are respectively connected to the driving bumps (114).

4. The blow molding device according to claim 1, wherein, Limiting convex strips (419) are provided on the inner walls of the cylindrical bins (4) along their own axial directions. Limiting grooves (420) parallel to their own axial directions are opened at the edges of the moving disks (41). The limiting grooves (420) penetrate through the moving disks (41). The limiting grooves (420) are respectively slidably matched with the corresponding limiting convex strips (419), and their mating surfaces have airtightness.

5. The blow molding device according to claim 1, wherein, Above the upper surface of the first die block (1), a moving plate (21) is provided in parallel at an interval. The upper end of the bottle placing pipe (2) is connected to the moving plate (21) and communicated to the upper surface of the moving plate (21). A first ring plate (22) is vertically connected to the periphery of the upper surface of the moving plate (21). Two of the sides of the first ring plate (22) are respectively connected with fitting strips (23). The fitting strips (23) are respectively slidably fitted to two fitting rods (24) parallel to the length direction. Fixed strips (25) are provided outside the other two sides of the first ring plate (22). The two ends of the fitting rod (24) are respectively connected to the two fixed strips (25). One of the fixed strips (25) is connected with a first support column (26). The first support columns (26) are all connected to another mounting cross bar (111). The other fixed strip (25) is connected with a second support column (27). The second support columns (27) are all connected to the mounting plate (411). A second linear cylinder (28) with a driving direction parallel to the length direction is provided on one of the fixed strips (25). The driving shaft of the second linear cylinder (28) is connected to the first ring plate (22).

6. The blow molding device according to claim 5, characterized in that, Below the moving plate (21), a first mounting frame (32) is provided. An air vent valve (33) with a quantity matching that of the air filling pipes (3) is provided on the first mounting frame (32). The upper ends of the air filling pipes (3) are correspondingly communicated with the output ends of the air vent valves (33) one by one. The input end of the air vent valve (33) is communicated with a second ventilation hose (34). A wire bundling disc (35) is connected to the lower end of one of the fixed strips (25). The second ventilation hoses (34) are all arranged through the wire bundling disc (35). The second ventilation hoses (34) are used for communicating with an external compressed air conveying mechanism. A third linear cylinder (36) is vertically provided on the moving plate (21). The driving shaft of the third linear cylinder (36) is connected to the first mounting frame (32).

7. The blow molding device according to claim 5, characterized in that Above the upper surface of the moving plate (21), fixing plates (29) are provided in parallel at an interval. Heating pipes (210) with a quantity matching that of the bottle placing pipes (2) are vertically connected to the lower surface of the fixing plates (29). The upper ends of the heating pipes (210) are communicated to the upper surface of the fixing plates (29). The heating pipes (210) and the bottle placing pipes (2) are arranged in the same array. And the two rows of heating pipes (210) in the middle section of the array along the width direction are coaxially corresponding to the semi-bottle necks (14) on the first die block (1) one by one. Heating grooves (211) are opened on the inner walls of the heating pipes (210). Heating components for heating are provided in the heating grooves (211). A second ring plate (212) is vertically connected to the periphery of the lower surface of the fixing plate (29). Two third support columns (213) are connected to each of the fixed strips (25). The third support columns (213) are all connected to the second ring plate (212).

8. The blow molding device according to claim 7, wherein Above the fixing plate (29), bottle feeding pipes (214) with a quantity matching that of the bottle placing pipes (2) are also provided. The bottle feeding pipes (214) and the air filling pipes (3) are coaxially arranged corresponding to each other one by one. The bottle feeding pipes (214) are installed on a second mounting frame (215). Two fourth support columns (216) are connected to each of the fitting strips (23). The fourth support columns (216) are all connected to the second mounting frame (215).

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