A blow molding machine, its positioning device and positioning method

Abstract

The present invention provides a bottle blowing machine, its positioning device and positioning method. The positioning device includes a preform seat disposed on a feeding track; a positioning mechanism disposed on one side of the feeding track. The positioning mechanism includes a mounting plate; a transmission member disposed on the mounting plate; a first driving source connected to the transmission member; at least one first mounting hole and a second mounting hole vertically penetrating the mounting plate are provided on the mounting plate; the first mounting hole is used for the installation of the transmission member on the upper / lower side of the mounting plate, and the second mounting hole is used for the installation of the first driving source on the lower / upper side of the mounting plate; the preform seat includes an upper gear and a lower gear, and the upper gear and the lower gear are respectively used to connect the transmission members installed on the upper and lower sides of the mounting plate. In this application, through the first mounting hole and the second mounting hole vertically penetrating the mounting plate, producers can freely change the installation positions of the transmission member and the first driving source on the upper and lower sides of the mounting plate, adapt to more usage environments, and meet more production requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of bottle blowing machines, and in particular, to a bottle blowing machine, its positioning device and positioning method. Background Art

[0002] As a device for manufacturing bottles, the conventional manufacturing steps of a bottle blowing machine are as follows: first, place the preform on the preform seat, then the preform seat together with the preform is sent to the heating device for heating through the feeding track, and then sent to the positioning device for positioning. After that, it is sent to the shaping cavity formed by the connection of the front mold and the rear mold in the mold clamping device. Then, through the blowing device, generally a trachea is inserted into the preform, and the preform is forced to expand and deform under the action of the gas force in the shaping cavity. Due to the limiting effect of the inner wall of the shaping cavity, the preform will deform into the shape of the bottle corresponding to the shape of the inner wall of the shaping cavity designed by the producer. Finally, the front mold and the rear mold of the bottle blowing machine are separated, the shaping cavity is opened, and the conveying device of the bottle blowing machine can convey the shaped bottle to the next process.

[0003] However, in the conventional positioning device, the installation position of the transmission member for driving the preform seat to rotate is usually single and fixed, which may cause the transmission member or even the entire positioning device to be unable to adapt to a variety of use environments and cannot meet more use requirements. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a bottle blowing machine, its positioning device and positioning method, which solve the problem of the single and fixed installation position of the transmission member through the first installation hole and the second installation hole vertically penetrating the mounting plate.

[0005] In order to solve the above technical problems, the technical solution of the present invention is:

[0006] A positioning device for a bottle blowing machine, comprising:

[0007] A preform seat, which is arranged on the feeding track and is used for installing and fixing the preform; and

[0008] A positioning mechanism, which is arranged on one side of the feeding track and is used for rotating the preform seat and positioning the preform on the preform seat;

[0009] Wherein, the positioning mechanism includes:

[0010] A mounting plate;

[0011] A transmission member, which is arranged on the mounting plate; and

[0012] A first driving source, which is connected to the transmission member and is used for driving the transmission member to move;

[0013] Among them, at least one first mounting hole and a second mounting hole vertically penetrating the mounting plate are provided on the mounting plate; the first mounting hole is used for the installation of the transmission member on the upper side / lower side of the mounting plate, and the second mounting hole is used for the installation of the first driving source on the lower side / upper side;

[0014] The preform seat includes an upper gear and a lower gear;

[0015] When the transmission member is arranged on the upper side of the mounting plate, the transmission member is connected to the upper gear;

[0016] When the transmission member is arranged on the lower side of the mounting plate, the transmission member is connected to the lower gear.

[0017] Preferably, a positioning portion is provided between the upper gear and the lower gear of the preform seat, and a positioning groove adapted to the positioning portion is provided at one end of the mounting plate close to the preform seat;

[0018] When the positioning portion is arranged in the positioning groove, one side of the upper gear and the lower gear is respectively located on the upper and lower sides of the mounting plate, and the upper gear or the lower gear is connected to the transmission member.

[0019] Preferably, the transmission member includes:

[0020] A driving wheel, which is connected to the first driving source, and the first driving source drives the driving wheel to rotate; and

[0021] A driven wheel, which is engaged with the driving wheel, and the rotation of the driving wheel drives the driven wheel to rotate;

[0022] Among them, the number of the first mounting holes is two, the driving wheel is arranged on the first mounting hole at one end close to the preform seat, the driven wheel is arranged on the first mounting hole at one end far from the preform seat, and the second mounting hole is opened on the periphery of the first mounting hole at one end far from the preform seat.

[0023] Preferably, the upper gear is engaged with the driven wheel, and the driven wheel drives the upper gear to rotate; a first positioning notch is recessed inward on one side of the circumferential surface of the upper gear. When the upper gear rotates until the first positioning notch faces the driven wheel, the upper gear is separated from the driven wheel and the upper gear remains fixed.

[0024] Preferably, the positioning groove is an arc-shaped groove, and the width of the positioning groove gradually decreases from the outside to the inside; and the shape of the positioning portion is a cylindrical shape adapted to the positioning groove.

[0025] Preferably, the preform seat includes:

[0026] A mounting rod;

[0027] A gear portion, which is sleeved on the mounting rod;

[0028] A positioning seat, which is sleeved on the installation rod and located above the gear part;

[0029] A positioning block, which is sleeved on the installation rod and located above the positioning seat, and is used for the installation and positioning of the preform;

[0030] Wherein, the positioning block is detachably arranged on the installation rod and can move along the axial direction of the installation rod.

[0031] Preferably, a second positioning notch is arranged on the outer peripheral surface of the positioning seat, a positioning component is arranged on the positioning mechanism, and an elastic member is arranged at the outer end of the positioning component; when the preform seat rotates to make the second positioning notch face the positioning mechanism, at least part of the elastic member enters the second positioning notch to realize the positioning and fixation of the preform seat.

[0032] A positioning device of a blow molding machine, comprising

[0033] A preform seat, which is arranged on the feeding track and is used for the installation and fixation of the preform; and

[0034] A positioning mechanism, which is arranged on one side of the feeding track and is used for rotating the preform seat and positioning the preform on the preform seat;

[0035] Wherein, the positioning mechanism includes:

[0036] An installation plate;

[0037] A transmission member, which is arranged on the lower side of the installation plate; and

[0038] A first driving source, which is connected to the transmission member and is used for driving the transmission member to move;

[0039] Wherein, the transmission member includes a driven wheel and a driving wheel, the driving wheel is connected to the first driving source, the first driving source drives the driving wheel to rotate, the driven wheel meshes with the driving wheel, and the rotation of the driving wheel drives the driven wheel to rotate; the driven wheel is detachably arranged on the lower side of the installation plate;

[0040] The driven wheel includes a first gear and a second gear, the thickness of the first gear is greater than the thickness of the second gear; the preform seat includes an upper gear and a lower gear;

[0041] When the first gear is arranged on the lower side of the installation plate, the upper and lower sides of the first gear are respectively connected to the upper gear and the lower gear;

[0042] When the second gear is arranged on the lower side of the installation plate, the second gear is connected to the upper gear.

[0043] A blow molding machine, comprising:

[0044] A feeding track, which is used for transporting the preform seat;

[0045] A heating device, which is arranged on one side of the feeding track and is used for heating preforms; and

[0046] A mold clamping device, which is arranged on one side of the feeding track and is used for shaping preforms;

[0047] It further includes a positioning device of the blow molding machine as described above, which is arranged on one side of the feeding track and is used for positioning preforms;

[0048] Wherein, the heating device and the mold clamping device are sequentially arranged on one side of the feeding track in the direction of the feeding track transporting preforms, and the positioning device is arranged between the heating device and the mold clamping device.

[0049] A positioning method of a blow molding machine, which is applied to a blow molding machine as described above, and includes the following steps:

[0050] S1: Fix the connecting frame on one side of the feeding track, the mounting plate is slidably arranged on the connecting frame, and one end of the mounting plate where the positioning groove is opened faces the preform seat; the second driving source is arranged on one side of the connecting frame and is connected to the mounting plate;

[0051] S2: When the positioning mechanism needs to be connected to the upper gear of the preform seat and is positioned through the first positioning notch opened on the circumferential surface of the upper gear, install the driving wheel and the driven wheel on the upper side of the mounting plate, install the first driving source on the lower side of the mounting plate, the second driving source drives the mounting plate to move towards the preform seat, so that the positioning seat of the mounting plate is stuck into the positioning part of the preform seat until the upper gear of the preform seat meshes with the driven wheel;

[0052] S3: When the positioning mechanism needs to be connected to the lower gear of the preform seat and is positioned through the second positioning notch opened on the circumferential surface of the positioning seat of the preform seat, first remove the driving wheel and the driven wheel from the upper side of the mounting plate, remove the first driving source from the lower side of the mounting plate, then install the driving wheel and the driven wheel on the lower side of the mounting plate, install the first driving source on the upper side of the mounting plate, the second driving source drives the mounting plate to move towards the preform seat, so that the positioning seat of the mounting plate is stuck into the positioning part of the preform seat until the lower gear of the preform seat meshes with the driven wheel;

[0053] S4: The second driving source drives the driving wheel to rotate, the driving wheel rotates to drive the driven wheel to rotate, and then further drives the preform seat to rotate to a set angle to complete the positioning of the preform on the preform seat.

[0054] The prominent and beneficial technical effects of the present invention compared with the prior art are:

[0055] 1. The present invention enables producers to freely replace the installation positions of the transmission parts and the first driving source on the upper and lower sides of the mounting plate through the first mounting holes and the second mounting holes vertically penetrating the mounting plate, adapting to more usage environments and meeting more production requirements.

[0056] 2. The present invention realizes the accurate adaptation between the upper gear or the lower gear and the transmission part through the adaptation between the positioning part and the positioning groove.

[0057] 3. The positioning groove of the present invention is preferably an arc-shaped groove, and the width of the positioning groove gradually decreases from the outside to the inside; and the shape of the positioning part is a cylindrical shape adapted to the positioning groove. Thus, the mounting plate can simply be translated horizontally to achieve the clamping and detachment of the preform seat, with a simple structure, convenient and effective operation.

[0058] 4. The positioning block in the present invention can simply be detached from or sleeved onto the mounting rod by simple plugging and unplugging, thereby realizing the simple replacement of the positioning block on the mounting rod. Ultimately, producers only need to replace the corresponding positioning block to meet the corresponding production requirements and adapt to preforms of different specifications. The producer's operation is simple and fast, and only one positioning block needs to be replaced, greatly saving the replacement steps and production costs, and correspondingly improving the production efficiency.

[0059] 5. The first fixing ring made of a flexible material in the present invention undergoes corresponding deformation to generate a corresponding reaction force, thereby increasing the friction force between the first fixing ring and the positioning block. Coupled with the friction force between the mounting rod and the positioning block, a sufficient acting force can be generated between the positioning block and the mounting rod to enable the positioning block to be set on the mounting rod more stably. At the same time, the relatively large acting force between the positioning block and the mounting rod can also reduce the offset or rotation of the positioning block on the mounting rod, and the positioning block can be effectively fixed to ensure the fixation of the preform position.

[0060] 6. The cooperation between the bearing part and the gear part in the present invention can also ensure that the pushing of the preform seat by the pushing mechanism and the rotational drive of the preform seat by the transmission part do not affect each other, thereby making the movement and rotation of the preform seat on the feeding track more stable.

[0061] 7. The present invention realizes the accurate adaptation between the upper gear or the lower gear and the transmission part through the adaptation between the positioning part and the positioning groove. The structure is simple and the function is effective.

[0062] 8. The present invention is provided with two related positioning structures, namely the first positioning notch and the second positioning notch, and users can select a suitable positioning method according to the corresponding production requirements, making the use more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1;

[0064] Figure 2 Schematic diagram of the back structure of Embodiment 1;

[0065] Figure 3 Schematic diagram of the structure of the transmission member of the positioning device on the lower side of the mounting plate;

[0066] Figure 4 Schematic diagram of the structure of the transmission member of the positioning device on the upper side of the mounting plate;

[0067] Figure 5 Schematic diagram of the structure of the mounting plate;

[0068] Figure 6 Schematic diagram of the structure of the preform seat;

[0069] Figure 7 Exploded view of the preform seat;

[0070] Figure 8 Schematic diagram of the structure of the pushing mechanism;

[0071] Figure 9 Schematic diagram of the structure when the first gear of the positioning device in Embodiment 2 is installed;

[0072] Figure 10 Schematic diagram of the structure when the second gear of the positioning device in Embodiment 2 is installed.

[0073] Reference numerals: 1, feeding track; 2, heating device; 3, mold clamping device;

[0074] 4, positioning device;

[0075] 41, preform seat; 411, mounting rod; 4111, first fixing groove; 4112, second fixing groove; 412, stepped portion; 413, bearing portion; 414, gear portion; 4141, third through hole; 4142, upper gear; 41421, first positioning notch; 4143, lower gear; 4144, positioning portion; 4145, pushing positioning groove; 415, positioning seat; 4151, second through hole; 4152, second positioning notch; 416, positioning block; 4161, first through hole; 4162, third fixing groove; 417, first fixing ring; 418, second fixing ring; 419, third fixing ring;

[0076] 42, positioning mechanism; 421, connecting frame; 4211, slide rail; 422, second driving source; 423, mounting plate; 4231, first mounting hole; 4232, second mounting hole; 4233, positioning groove; 4234, slider; 424, transmission member; 4241, driving wheel; 4242, driven wheel; 42421, first gear; 42422, second gear; 425, first driving source;

[0077] 5, preform; 6, mounting platform;

[0078] 7. Pushing mechanism; 71. Pushing drive source; 72. Transverse movement component; 73. Connecting plate; 74. Pushing member; 741. Pushing groove; 742. Pushing positioning strip;

[0079] 8. Upper sensor; 9. Lower sensor. Specific embodiments

[0080] The following further details the specific embodiments of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master. Embodiment

[0081] As Figures 1-7 shown, a blow molding machine includes an installation platform 6, a feeding track 1, a heating device 2, a mold closing device 3, and a positioning device 4. The installation platform 6 can be a frame or the ground. In this embodiment, the installation platform 6 is preferably a frame, and the feeding track 1, the heating device 2, the mold closing device 3, and the positioning device 4 are all arranged on the installation platform 6. The feeding track 1 is used to transport the preform seat 41 to each device of the blow molding machine for processing. The heating device 2 is arranged on one side of the feeding track 1 and is used to heat the preform 5. The mold closing device 3 is arranged on one side of the feeding track 1, and a shaping cavity for shaping the preform 5 is formed therein. After the preform 5 enters the shaping cavity, the shaping cavity is closed, and then a corresponding blowing device blows air into the preform 5, so that the preform 5 is deformed and expanded under force in the shaping cavity to the shape of the shaping cavity, thereby completing the shaping of the preform 5. The positioning device is arranged on one side of the feeding track 1 and is used for positioning the preform 5, so that the preform 5 can be processed more accurately.

[0082] Among them, in combination with Figure 1 and Figure 2 , the heating device 2 and the mold closing device 3 are arranged in sequence on one side of the feeding track 1 in the direction of the feeding track 1 transporting the preform, and the positioning device 4 is arranged between the heating device 2 and the mold closing device 3. That is, the preform is first heated and softened by the heating device 2, then positioned by the positioning device 4, and finally the shaping process of the preform in the mold closing device 3 can be made easier and more accurate.

[0083] Among them, in combination with Figure 3 and Figure 4, the positioning device 4 of the blow molding machine includes a preform seat 41 and a positioning mechanism 42. The preform seat 41 is used for installing and fixing the preform 5. The preform seat 41 is arranged on the feeding track 1, and the feeding track 1 indirectly transports the preform by transporting the preform seat 41. At the same time, by installing the preform 5 at a set angle on the preform seat, the installation and positioning between the preform 5 and the preform seat 41 can be completed. The positioning mechanism 42 is arranged on one side of the feeding track 1 and is used to rotate the preform seat 41 to a set angle. Since the position between the preform 5 and the preform seat 41 is fixed, the positioning of the preform 5 on the preform seat 41 relative to the positioning device 4 can be indirectly completed, and finally the preform 5 can move on the feeding track 1 at a set angle.

[0084] Among them, combined with Figure 3 and Figure 4 , the positioning mechanism 42 includes a mounting plate 423, a transmission member 424, and a first driving source 425. The transmission member 424 is arranged on the mounting plate 423. The first driving source 425 is also arranged on the mounting plate 423 and is connected to the transmission member 424 to drive the transmission member 424 to move.

[0085] Among them, combined with Figures 3-5 , at least one first mounting hole 4231 and a second mounting hole 4232 vertically penetrating the mounting plate 423 are arranged on the mounting plate 423; the first mounting hole 4231 is used for installing the transmission member 424 on the upper or lower side of the mounting plate 423, and the second mounting hole 4232 is used for installing the first driving source 425 on the lower or upper side. The preform seat 41 includes an upper gear 4142 and a lower gear 4143, and the upper gear 4142 and the lower gear 4143 are respectively used to connect the transmission members 424 installed on the upper and lower sides of the mounting plate 423.

[0086] Since both the first mounting hole 4231 and the second mounting hole 4232 vertically penetrate the mounting plate 423, producers can freely change the installation positions of the transmission member 424 and the first driving source 425 on the upper and lower sides of the mounting plate 423, adapt to more usage environments, and meet more production requirements.

[0087] Thus, when producers need to position the preform 5 by driving the upper gear 4142 of the preform seat 41, or the space above the positioning device 4 is not enough and the first driving source 425 needs to be installed on the lower side of the mounting plate 423, or in other cases where connection with the upper gear 4142 is required, the transmission member 424 can be installed on the upper side of the mounting plate 423 by passing fasteners through the first mounting hole 4231 and the transmission member 424 on the upper side of the mounting plate 423 at the same time, and the first driving source 425 can be installed on the lower side of the mounting plate 423 by passing fasteners through the second mounting hole 4232 and the first driving source 425 on the lower side of the mounting plate 423 at the same time.

[0088] When the producer needs to position the preform 5 by driving the lower gear 4143 of the preform base 41, or when the space below the positioning device 4 is insufficient and the first driving source 425 needs to be installed on the upper side of the mounting plate 423, or in other cases where connection with the lower gear 4143 is required, the transmission member 424 can be installed on the lower side of the mounting plate 423 simply by passing a fastener through the first mounting hole 4231 and the transmission member 424 on the lower side of the mounting plate 423 at the same time. The first driving source 425 can be installed on the upper side of the mounting plate 423 by passing a fastener through the second mounting hole 4232 and the first driving source 425 on the upper side of the mounting plate 423 at the same time.

[0089] Among them, when it is necessary to change the installation positions of the transmission member 424 and the first driving source 425, only the fastener needs to be removed, then the transmission member 424 and the first driving source 425 are separated from the mounting plate 423, and then they can be reinstalled after reselecting the positions. The operation is simple and fast.

[0090] Combined with Figures 3-6 , a positioning portion 4144 is provided between the upper gear 4142 and the lower gear 4143, and a positioning groove 4233 adapted to the positioning portion 4144 is provided at one end of the mounting plate 423 close to the preform base 41; when the positioning portion 4144 is arranged in the positioning groove 4233, one side of the upper gear 4142 and the lower gear 4143 is respectively located on the upper and lower sides of the mounting plate 423, and one of the upper gear 4142 or the lower gear 4143 is connected to the transmission member 424. The installation positions of the transmission member 424 on the upper and lower sides of the mounting plate 423 are adapted to the positioning groove 4233, and the distance between the positioning portion 4144 and the upper gear 4142 and the lower gear 4143 is adapted, so as to achieve accurate adaptation between the upper gear 4142 or the lower gear 4143 and the transmission member 424 through the adaptation between the positioning portion 4144 and the positioning groove 4233.

[0091] Furthermore, combined with Figures 3-6 , the positioning groove 4233 is preferably an arc-shaped groove, and the width of the positioning groove 4233 gradually decreases from the outside to the inside; and the shape of the positioning portion 4144 is a cylindrical shape adapted to the positioning groove 4233. Thus, the mounting plate 423 can be simply translated horizontally to achieve the insertion and detachment of the preform base 41. The structure is simple, and the operation is convenient and effective.

[0092] Combined with Figure 3 and Figure 4, the transmission member 424 includes a driving wheel 4241 and a driven wheel 4242. The driving wheel 4241 is connected to the first driving source 425, and the first driving source 425 drives the driving wheel 4241 to rotate. The driven wheel 4242 meshes with the driving wheel 4241, and the rotation of the driving wheel 4241 drives the rotation of the driven wheel 4242. In this embodiment, the number of the first mounting holes 4231 is two. The driving wheel 4241 is arranged on the first mounting hole 4231 near one end of the preform seat 41, and the driven wheel 4242 is arranged on the first mounting hole 4231 far from one end of the preform seat 41. The second mounting hole 4232 is formed on the periphery of the first mounting hole 4231 far from one end of the preform seat 41. Thus, the rotation of the preform seat 41 is driven by the meshing transmission of the gears, and the structure is stable and the rotation angle of the preform seat 41 can be accurately controlled.

[0093] Further, in combination with Figures 3-6 , the upper gear 4142 meshes with the driven wheel 4242, and the driven wheel 4242 drives the upper gear 4142 to rotate; a first positioning notch 41421 is formed inwards on one side of the circumferential surface of the upper gear 4142. When the upper gear 4142 rotates to the first positioning notch 41421 facing the driven wheel 4242, the teeth on the circumferential surfaces of the upper gear 4142 and the driven wheel 4242 are no longer meshed and are separated from each other. Thus, at this time, the driven wheel 4242 can no longer apply force to the upper gear 4142, and the upper gear 4142 remains fixed. Furthermore, the entire preform seat 41 remains fixed, and finally the preforms on the preform seat 41 are kept at this angle, that is, the positioning of the preforms is realized. After that, the feeding track 1 can send the preform seat 41 and the preforms on the preform seat 41 to the next process to realize the accurate processing of the preforms.

[0094] Further, in combination with Figures 3-5 , the positioning mechanism 42 further includes a connecting frame 421 and a second driving source 422. The connecting frame 421 is arranged on the mounting platform 6, and the mounting plate 423 is movably arranged horizontally on the connecting frame 421. The second driving source 422 is arranged on the connecting frame 421 and is connected to the mounting plate 423 for driving the mounting plate 423 to move horizontally. Wherein, a slide rail 4211 is arranged at the upper end of the connecting frame 421, and a slide block 4234 is arranged at the lower end of the mounting plate 423. The horizontal movement of the mounting plate 423 on the connecting frame 421 is realized by the sliding of the slide block 4234 on the slide rail 4211. Thus, the approach or separation of the mounting plate 423 from the preform seat 41 is realized by the horizontal movement of the mounting plate 423 on the connecting frame 421, and further the clamping or separation of the mounting plate 423 from the preform seat 41 is realized. At the same time, the sliding between the slide rail 4211 and the slide block 4234 can also make the horizontal movement of the mounting plate 423 more stable.

[0095] In combination with Figure 6 andFigure 7 , the preform seat 41 includes a mounting rod 411, a bearing portion 413, a gear portion 414, a positioning seat 415 and a positioning block 416. The mounting rod 411 is composed of tubular bodies with different diameters in multiple segments, and the mounting rod 411, the bearing portion 413, the gear portion 414, the positioning seat 415 and the positioning block 416 are all sleeved on the mounting rod 411. The bearing portion 413 is located at the lower end of the mounting rod 411. The gear portion 414 is located above the bearing, and the positioning seat 415 and the positioning block 416 are stacked on the gear portion 414 in sequence. The positioning seat 415 is used for the installation of the positioning block 416 and the abutment against the mouth portion of the preform, and the positioning block 416 is used for the sleeved installation of the preform, thereby realizing the positioning installation of the preform on the preform seat 41.

[0096] Among them, the positioning block 416 is detachably arranged on the mounting rod 411 and can move along the axial direction of the mounting rod 411. Thus, the positioning block 416 can be simply detached from or sleeved onto the mounting rod 411 by simple plugging and unplugging, and then the simple replacement of the positioning block 416 on the mounting rod 411 can be realized. Finally, the producer only needs to replace the corresponding positioning block 416 to meet the corresponding production requirements and adapt to preforms of different specifications. The operation of the producer is simple and fast, and only one positioning block 416 needs to be replaced, which greatly saves the replacement steps and production costs, and correspondingly improves the production efficiency.

[0097] In this embodiment, the detachable structure between the positioning block 416 and the mounting rod 411 can be a clamping structure, a threaded structure, or can also be simply fixed by friction. This embodiment is preferably fixed by friction. Specifically, combined with Figure 6 and Figure 7, a first through hole 4161 is formed in the positioning block 416, and the positioning block 416 is sleeved on the mounting rod 411 by passing the mounting rod 411 through the first through hole 4161. A plurality of first fixing grooves 4111 are provided on the outer peripheral surface of the upper end of the mounting rod 411, and a first fixing ring 417 made of a flexible material is provided in the first fixing groove 4111; the positioning block 416 is fixed on the mounting rod 411 by the outer peripheral surface of the first fixing ring 417 abutting against the inner wall of the first through hole 4161. Thus, the inner wall of the first through hole 4161 and the first fixing groove 4111 cooperate to squeeze the first fixing ring 417, and the first fixing ring 417 made of a flexible material deforms accordingly to generate a corresponding reaction force, thereby increasing the friction force between the first fixing ring 417 and the positioning block 416. Coupled with the friction force between the mounting rod 411 and the positioning block 416, a sufficient acting force can be generated between the positioning block 416 and the mounting rod 411 to enable the positioning block 416 to be set more stably on the mounting rod 411. Finally, although the producer needs a greater force to separate the positioning block 416 from the mounting rod 411, during the movement of the preform seat 41, the greater acting force can reduce the offset or rotation of the positioning block 416 on the mounting rod 411, and the positioning block 416 can be effectively kept fixed to ensure the fixation of the preform position.

[0098] Combined with Figure 6 and Figure 7 , the gear part 414, the positioning seat 415 and the positioning block 416 are all detachably arranged on the mounting rod 411 and can all move along the axial direction of the mounting rod 411. Thus, the producer can simply insert and remove to realize the disassembly, assembly and replacement of the gear part 414, the positioning seat 415 and the positioning block 416 on the mounting rod 411. The operation is simple and fast, and the producer can also select different gear parts 414, positioning seats 415 and positioning blocks 416 according to the corresponding production requirements and the specifications of the connected mechanism to meet more production needs.

[0099] Combined with Figure 6 and Figure 7, a second through hole 4151 and a third through hole 4141 are respectively formed on the positioning seat 415 and the gear portion 414. The positioning seat 415 and the gear portion 414 are sleeved on the mounting rod 411 by passing the mounting rod 411 through the second through hole 4151 and the third through hole 4141. A second fixing groove 4112 is provided on the outer peripheral surface of the mounting rod 411, and a second fixing ring 418 made of a flexible material is arranged in the second fixing groove 4112. The positioning block 416 is fixed on the mounting rod 411 by the outer peripheral surface of the second fixing ring 418 abuting against the inner wall of the first through hole 4161. Thus, similar to the function of the above-mentioned first fixing ring 417, the frictional force between the positioning seat 415 and the mounting rod 411 is increased by the acting force generated by the deformation of the second fixing ring 418, ensuring the detachable function of the positioning seat 415 while ensuring the stability of the positioning seat 415 during the movement of the preform seat 41.

[0100] Among them, in combination with Figure 6 and Figure 7 , a stepped portion 412 extending outward is provided on the circumferential surface of the mounting rod 411. The lower surface of the gear portion 414 abuts against the upper surface of the stepped portion 412. The stepped portion 412 supports the gear portion 414, the positioning seat 415 and the positioning block 416, and the bearing portion 413 is sleeved on the lower end of the mounting rod 411. Specifically, the lower end of the bearing portion 413 is arranged on the feeding track 1 of the blow molding machine, and the upper end of the bearing portion 413 is in contact with the lower surface of the stepped portion 412. Thus, for the relevant mechanisms of the blow molding machine, such as the pushing mechanism, only by pushing the bearing portion 413, the overall movement of the preform seat 41 on the feeding track 1 of the blow molding machine can be realized. The relevant transmission structures of the blow molding machine, such as gears or chains, can also be engaged with the gear portion 414 to drive the overall rotation of the preform seat 41. At the same time, through the cooperation between the bearing portion 413 and the gear portion 414, the pushing of the preform seat 41 by the pushing mechanism and the rotational drive of the preform seat 41 by the transmission member 424 will not affect each other, so that the movement and rotation of the preform seat 41 on the feeding track 1 are more stable.

[0101] In combination with Figures 3-7, the gear part 414 includes the upper gear 4142 and the lower gear 4143 described above. The upper gear 4142 is in contact with the positioning seat 415, and the lower gear 4143 abuts against the step part 412. Among them, the upper gear 4142 and the lower gear 4143 are respectively adapted to the transmission parts 424 on the upper side or the lower side of the mounting plate 423. The transmission part 424 in this embodiment can be a corresponding gear or a structure such as a chain that cooperates with the gear. In this embodiment, the active wheel 4241 and the driven wheel 4242 described above are preferably used. The positioning device 4 realizes the rotation of the preform seat 41 through the meshing between the transmission part 424 and the upper gear 4142 or the lower gear 4143. At the same time, sometimes users need to set the transmission part 424 on the upper side or the lower side of the conveying track according to the corresponding production requirements, and the preform seat 41 of this embodiment can be adapted to the transmission parts 424 located on the upper and lower sides of the feeding track 1, that is, it can further meet more production requirements.

[0102] Among them, in order to effectively position the preform during the feeding process, the producer will first set the preform on the preform seat 41 at a set angle, and the relative angle between the preform and the preform seat 41 remains fixed. Thus, during the process of the feeding track 1 of the blow molding machine transporting on the conveying track, the preform seat 41 is rotated by a corresponding angle, and the preform can be rotated to the set angle.

[0103] Furthermore, in combination with Figures 3-7 , a second positioning notch 4152 is provided on the outer peripheral surface of the positioning seat 415, and a corresponding positioning component is provided on the positioning device 4. The positioning component in this embodiment can be a sensor or an elastic member.

[0104] In this embodiment, it is preferably that an elastic member is provided at the outer end of the positioning component. When the preform seat 41 is not rotated until the second positioning notch 4152 faces the positioning mechanism 42, the outer end of the elastic member abuts against the outer peripheral surface of the positioning seat 415, and at the same time the elastic member is compressed and deformed.

[0105] When the preform seat 41 is rotated until the second positioning notch 4152 faces the positioning mechanism 42, the elastic member can rebound, and at least part of the elastic member enters the second positioning notch 4152, so that the elastic member catches the preform seat 41, and the preform seat 41 is kept fixed, thereby realizing the positioning of the preform seat 41 and the preform on the preform seat 41. At this time, the feeding track 1 of the blow molding machine can send the positioned preform to the next process.

[0106] Thus, with the elastic member as the positioning structure, the overall structure is simple and the elastic member can actually contact the preform seat 41, which can effectively limit the rotation of the preform seat 41.

[0107] Among them, when the positioning component is a sensor, after the light of the sensor enters the second positioning notch 4152, the light distance changes, and the sensor can sense the corresponding change. Then, it can transmit a signal to make the relevant devices driving the preform seat 41, such as the chain on the feeding track 1, stop moving, and make the preform seat 41 stop rotating, so as to realize the positioning of the preform, which is simple and convenient.

[0108] Therefore, the preform seat 41 is provided with two related positioning structures, namely the first positioning notch 41421 and the second positioning notch 4152. Users can select a suitable positioning method according to the corresponding production requirements, making the use more flexible.

[0109] Furthermore, in combination with Figure 6 and Figure 7 , the positioning block 416 in this embodiment is a cylinder, and the outer diameter of the cylinder is adapted to the inner diameter of the preform, so as to adapt to the shape of the preform. An arc chamfer is provided at the edge of the upper end of the positioning block 416 to prevent the edges and corners of the positioning block 416 from scratching the inner wall of the preform and improve the yield rate of the preform.

[0110] In combination with Figure 3 and Figure 6 , a third fixing groove 4162 is provided on the outer peripheral surface of the positioning block 416, and a third fixing ring 419 made of a flexible material is arranged in the third fixing groove 4162. The preform is installed and positioned on the positioning block 416 by the outer peripheral surface of the third fixing ring 419 abutting against the inner wall of the preform. Thus, the frictional force between the preform and the positioning block 416 is increased through the deformation force of the third fixing ring 419, so that the preform can be more stable when arranged on the positioning block 416.

[0111] Furthermore, in combination with Figure 1 and Figure 2 , the number of the positioning devices 4 can also be multiple, which are respectively arranged on one side of different positions of the feeding track 1, such as one side of the position of the feeding track 1 where the preform is located when the preform is transported into the feeding track 1. Thus, the accurate and timely adjustment of the preform seat 41 and the preform is ensured through multiple positioning devices 4.

[0112] Furthermore, the positioning of the preform seat 41 and the preform can also be that a related pushing mechanism pushes the preform towards the positioning device 4, and the positioning device 4 remains fixed. That is, the connecting frame 421 and the mounting plate 423 are fixedly arranged.

[0113] Among them, such as Figure 8As shown in the figure, the blank pushing mechanism 7 includes a corresponding blank pushing drive source 71, a transverse movement assembly 72, a connecting plate 73, and a plurality of blank pushing members 74. The blank pushing drive source 71 is connected to the transverse movement assembly 72, the connecting plate 73 is further connected to the transverse movement assembly 72, and the plurality of blank pushing members 74 are arranged on the connecting plate 73 and are used to hold the blank seat 41 of the preform 5. Thus, the blank pushing drive source 71 drives the transverse movement assembly 72 to move, the transverse movement assembly 72 drives the connecting plate 73 to move horizontally or vertically, and further, the blank pushing members 74 on the connecting plate 73 can also drive the blank seat 41 of the preform 5 to move, so as to push the blank seat 41 of the preform 5 from the positioning device 4 to the mold closing device 3.

[0114] As Figure 8 shown in the figure, in this embodiment, the number of the blank pushing members 74 is preferably two, which are respectively arranged at one end of the connecting plate 73 close to the transverse movement assembly 72 and at one end of the connecting plate 73 far from the transverse movement assembly 72. The blank pushing member 74 at the end close to the transverse movement assembly 72 is used to send the blank seat 41 of the preform 5 from the positioning device 4 to the mold closing device 3, and the blank pushing member 74 at the end far from the transverse movement assembly 72 is used to send the blank seat 41 of the preform 5 out of the mold closing device 3, so that the preform 5 on the blank seat 41 can be sent to the next process for processing. A blank pushing groove 741 is formed on one side of the blank pushing member 74 close to the blank seat 41 of the preform 5, and the blank pushing member 74 is clamped to the blank seat 41 of the preform 5 by arranging the blank seat 41 of the preform 5 in the blank pushing groove 741.

[0115] As Figure 8 shown in the figure, the structure of the transverse movement assembly 72 can adopt the structure of a slide rail and a slider, or the structure of a helical gear and a lead screw to realize longitudinal and transverse driving.

[0116] Further, as Figure 8 shown in the figure, a blank pushing positioning groove 4145 is arranged on one side of the gear portion 414, and a corresponding blank pushing positioning bar 742 is arranged in the blank pushing groove 741. The blank pushing member 74 is positioned with the blank seat 41 by inserting the blank pushing positioning bar 742 into the blank pushing positioning groove 4145. At the same time, the clamping effect between the blank pushing positioning bar 742 and the blank pushing positioning groove 4145 can also ensure the stable transportation of the blank seat 41 in the blank pushing groove 741.

[0117] Further, this embodiment further includes a positioning method for a blow molding machine, which is applied to a blow molding machine as described above and includes the following steps:

[0118] S1: Fix the connecting frame 421 on one side of the feeding track 1, the mounting plate 423 is slidably arranged on the connecting frame 421, and one end of the mounting plate 423 provided with the positioning groove 4233 faces the blank seat 41; the second drive source 422 is arranged on one side of the connecting frame 421 and is connected to the mounting plate 423. Thus, the installation of the basic framework of the positioning device 4 is realized, so as to facilitate the replacement of the installation positions of the transmission member 424 and the first drive source 425 and their movements.

[0119] S2: When the positioning mechanism 42 needs to be connected to the upper gear 4142 of the preform seat 41 and positioned through the first positioning notch 41421 formed on the circumferential surface of the upper gear 4142, the driving wheel 4241 and the driven wheel 4242 are installed on the upper side of the mounting plate 423, and the first driving source 425 is installed on the lower side of the mounting plate 423. The second driving source 422 drives the mounting plate 423 to move towards the preform seat 41, so that the positioning seat 415 of the mounting plate 423 is inserted into the positioning portion 4144 of the preform seat 41 until the upper gear 4142 of the preform seat 41 meshes with the driven wheel 4242;

[0120] S3: When the positioning mechanism 42 needs to be connected to the lower gear 4143 of the preform seat 41 and positioned through the second positioning notch 4152 formed on the circumferential surface of the positioning seat 415 of the preform seat 41, first, the driving wheel 4241 and the driven wheel 4242 are removed from the upper side of the mounting plate 423, and the first driving source 425 is removed from the lower side of the mounting plate 423. Then, the driving wheel 4241 and the driven wheel 4242 are installed on the lower side of the mounting plate 423, and the first driving source 425 is installed on the upper side of the mounting plate 423. The second driving source 422 drives the mounting plate 423 to move towards the preform seat 41, so that the positioning seat 415 of the mounting plate 423 is inserted into the positioning portion 4144 of the preform seat 41 until the lower gear 4143 of the preform seat 41 meshes with the driven wheel 4242.

[0121] Thus, the producer only needs to select the installation of the transmission member 424 and the first driving source 425 on the upper or lower side of the mounting plate 423 according to the production situation. The operation is simple and convenient and can adapt to various usage situations. The same set of device can simply realize the switching between two positioning methods, with one structure serving multiple purposes, simpler structure and wider applicability.

[0122] S4: The second driving source 422 drives the driving wheel 4241 to rotate. The rotation of the driving wheel 4241 drives the driven wheel 4242 to rotate, and then drives the preform seat 41 to rotate to a set angle, completing the positioning of the preforms on the preform seat 41. The operation is simple, fast and effective. Embodiment

[0123] As Figure 9 shown in Figure 10 this embodiment is basically the same as Embodiment 1, except that the gear portion 414 of the preform seat 41 is located below the mounting plate 423, and the transmission member 424 is always arranged on the lower side of the mounting plate 423. The driven wheel 4242 is detachably arranged on the lower side of the mounting plate 423, and the driven wheel 4242 includes a first gear 42421 and a second gear 42422. The thickness of the first gear 42421 is greater than the thickness of the second gear 42422, that is, the user can replace the driven wheel 4242 with different specifications according to needs.

[0124] As Figure 9 shown, when the first gear 42421 is arranged on the lower side of the mounting 423, the upper and lower sides of the first gear 42421 are respectively connected to the upper gear 4142 and the lower gear 4143; thus, the first gear 42421 can drive the upper gear 4142 and the lower gear 4143 simultaneously, that is, the first gear 42421 can always remain meshed with the preform seat 41. At this time, the preform seat 41 can complete positioning with the sensor through the second positioning notch 4152. Among them, the sensor is arranged on the upper side of the mounting plate 423, and the sensor includes an upper sensor 8 for detecting whether there is a preform on the preform seat and a lower sensor 9 for positioning the second positioning notch 4152.

[0125] As Figure 10 shown, when the second gear 42422 is arranged on the lower side of the mounting plate 423, the second gear 42422 is connected to the upper gear 4142, but the lower end of the second gear 42422 is not connected to the lower gear 4143. Thus, the preform seat 41 can be positioned through the first positioning notch 41421 on the upper gear 4142.

[0126] Among them, in combination with Figures 1-3 and Figure 9 and Figure 10 , the positioning device 4 described in this embodiment is generally applied between the heating device 2 and the mold clamping device 3, and the positioning device 4 described in Embodiment 1 is generally located on one side of the position where the preform 5 enters the feeding track 1.

[0127] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A positioning device for a bottle blowing machine, characterized in that, including a preform seat (41) which is arranged on the feeding track (1) and is used for installing and fixing a preform (5); and a positioning mechanism (42) which is arranged on one side of the feeding track (1) and is used for rotating the preform seat (41) and positioning the preform (5) on the preform seat (41); wherein, the positioning mechanism (42) includes: a mounting plate (423); a transmission member (424) which is arranged on the mounting plate (423); and a first driving source (425) which is connected to the transmission member (424) and is used for driving the transmission member (424) to move; wherein, at least one first mounting hole (4231) and a second mounting hole (4232) which vertically penetrate through the mounting plate (423) are arranged on the mounting plate (423); the first mounting hole (4231) is used for mounting the transmission member (424) on the upper side / lower side of the mounting plate (423), and the second mounting hole (4232) is used for mounting the first driving source (425) on the lower side / upper side; the preform seat (41) includes an upper gear (4142) and a lower gear (4143); when the transmission member (424) is arranged on the upper side of the mounting plate (423), the transmission member (424) is connected to the upper gear (4142); when the transmission member (424) is arranged on the lower side of the mounting plate (423), the transmission member (424) is connected to the lower gear (4143); a positioning portion (4144) is arranged between the upper gear (4142) and the lower gear (4143) of the preform seat (41), and a positioning groove (4233) which is adapted to the positioning portion (4144) is arranged at one end of the mounting plate (423) close to the preform seat (41); when the positioning portion (4144) is arranged in the positioning groove (4233), one side of the upper gear (4142) and the lower gear (4143) is respectively located on the upper and lower sides of the mounting plate (423), and the upper gear (4142) or the lower gear (4143) is connected to the transmission member (424); the transmission member (424) includes: a driving wheel (4241) which is connected to the first driving source (425), and the first driving source (425) drives the driving wheel (4241) to rotate; and a driven wheel (4242) which is meshed with the driving wheel (4241), and the driving wheel (4241) rotates to drive the driven wheel (4242) to rotate; wherein, the number of the first mounting holes (4231) is two, the driving wheel (4241) is arranged on the first mounting hole (4231) at one end close to the preform seat (41), the driven wheel (4242) is arranged on the first mounting hole (4231) at one end far from the preform seat (41), and the second mounting hole (4232) is opened on the periphery of the first mounting hole (4231) at one end far from the preform seat (41).

2. The positioning device of the blow molding machine according to claim 1, characterized in that: The upper gear (4142) meshes with the driven wheel (4242), and the driven wheel (4242) drives the upper gear (4142) to rotate; on one side of the circumferential surface of the upper gear (4142), there is a first positioning notch (41421) recessed inward. When the upper gear (4142) rotates to the position where the first positioning notch (41421) faces the driven wheel (4242), the upper gear (4142) separates from the driven wheel (4242), and the upper gear (4142) remains fixed.

3. The positioning device of the blow molding machine according to claim 1, characterized in that: The positioning groove (4233) is an arc-shaped groove, and the width of the positioning groove (4233) gradually decreases from the outside to the inside; and the shape of the positioning portion (4144) is a cylindrical shape adapted to the positioning groove (4233).

4. The positioning device of the blow molding machine according to claim 2, characterized in that: The preform seat (41) includes: The mounting rod (411); The gear portion (414), which is sleeved on the mounting rod (411); The positioning seat (415), which is sleeved on the mounting rod (411) and is located above the gear portion (414); The positioning block (416), which is sleeved on the mounting rod (411) and is located above the positioning seat (415), and is used for the installation and positioning of the preform (5); Wherein, the positioning block (416) is detachably arranged on the mounting rod (411) and can move along the axial direction of the mounting rod (411).

5. The positioning device of the blow molding machine according to claim 4, characterized in that: On the outer peripheral surface of the positioning seat (415), there is a second positioning notch (4152). On the positioning mechanism (42), there is a positioning component, and an elastic member is arranged at the outer end of the positioning component; when the preform seat (41) rotates to the position where the second positioning notch (4152) faces the positioning mechanism (42), at least part of the elastic member enters the second positioning notch (4152) to realize the positioning and fixing of the preform seat (41).

6. A positioning device for a bottle blowing machine, characterized in that, Including The preform seat (41), which is arranged on the feeding track (1) and is used for the installation and fixing of the preform (5); and The positioning mechanism (42), which is arranged on one side of the feeding track (1) and is used for rotating the preform seat (41) and positioning the preform (5) on the preform seat (41); Wherein, the positioning mechanism (42) includes: The mounting plate (423); The transmission member (424), which is arranged on the lower side of the mounting plate (423); and The first driving source (425), which is connected to the transmission member (424) and is used for driving the transmission member (424) to move; Wherein, the transmission member (424) includes a driven wheel (4242) and a driving wheel (4241). The driving wheel (4241) is connected to the first driving source (425), and the first driving source (425) drives the driving wheel (4241) to rotate. The driven wheel (4242) meshes with the driving wheel (4241), and the rotation of the driving wheel (4241) drives the driven wheel (4242) to rotate; the driven wheel (4242) is detachably arranged on the lower side of the mounting plate (423); The driven wheel (4242) includes a first gear (42421) and a second gear (42422), and the thickness of the first gear (42421) is greater than that of the second gear (42422); the preform seat (41) includes an upper gear (4142) and a lower gear (4143); When the first gear (42421) is arranged on the lower side of the mounting plate (423), the upper and lower sides of the first gear (42421) are respectively connected to the upper gear (4142) and the lower gear (4143); When the second gear (42422) is arranged on the lower side of the mounting plate (423), the second gear (42422) is connected to the upper gear (4142).

7. A blow molding machine, comprising: A feeding track (1) for transporting the preform seat (41); A heating device (2) arranged on one side of the feeding track (1) for heating the preform (5); and A mold clamping device (3) arranged on one side of the feeding track (1) for shaping the preform (5); It is characterized in that: it further includes a positioning device (4) of the blow molding machine according to any one of claims 5 or 6, which is arranged on one side of the feeding track (1) for positioning the preform (5); Wherein, the heating device (2) and the mold clamping device (3) are arranged in sequence on one side of the feeding track (1) along the direction in which the feeding track (1) transports the preform (5), and the positioning device (4) is arranged between the heating device (2) and the mold clamping device (3).

8. A positioning method for a bottle blowing machine, which is applied to a bottle blowing machine as described in claim 7, characterized in that, Including the following steps: S1: Fix the connecting frame (421) on one side of the feeding track (1), the mounting plate (423) is slidably arranged on the connecting frame (421), and one end of the mounting plate (423) provided with the positioning groove (4233) faces the preform seat (41); the second driving source (422) is arranged on one side of the connecting frame (421) and connected to the mounting plate (423); S2: When the positioning mechanism (42) needs to be connected to the upper gear (4142) of the preform seat (41) and is positioned through the first positioning notch (41421) opened on the circumferential surface of the upper gear (4142), the driving wheel (4241) and the driven wheel (4242) are installed on the upper side of the mounting plate (423), the first driving source (425) is installed on the lower side of the mounting plate (423), and the second driving source (422) drives the mounting plate (423) to move towards the preform seat (41), so that the positioning seat (415) of the mounting plate (423) is inserted into the positioning portion (4144) of the preform seat (41) until the upper gear (4142) of the preform seat (41) meshes with the driven wheel (4242); S3: When the positioning mechanism (42) needs to be connected to the lower gear (4143) of the preform seat (41) and is positioned through the second positioning notch (4152) opened on the circumferential surface of the positioning seat (415) of the preform seat (41), first remove the driving wheel (4241) and the driven wheel (4242) from the upper side of the mounting plate (423), remove the first driving source (425) from the lower side of the mounting plate (423), then install the driving wheel (4241) and the driven wheel (4242) on the lower side of the mounting plate (423), install the first driving source (425) on the upper side of the mounting plate (423), and the second driving source (422) drives the mounting plate (423) to move towards the preform seat (41) so that the positioning seat (415) of the mounting plate (423) is inserted into the positioning portion (4144) of the preform seat (41) until the lower gear (4143) of the preform seat (41) meshes with the driven wheel (4242); S4: The second driving source (422) drives the driving wheel (4241) to rotate. The rotation of the driving wheel (4241) drives the driven wheel (4242) to rotate, which in turn drives the preform seat (41) to rotate to a set angle, completing the positioning of the preform (5) on the preform seat (41).

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