Blow molding feeding device with automatic positioning function

Abstract

The invention relates to the technical field of blow molding devices, in particular to an automatic positioning blow molding feeding device which comprises a transfer seat, a transfer mechanism, a rotating mechanism and a positioning mechanism. A parison positioning and mounting part and a positioning bulge are arranged on the transfer seat; the transferring mechanism comprises a transferring guide rail, and the transferring guide rail comprises a heating conveying section, a blow molding conveying section and a positioning conveying section arranged between the heating conveying section and the blow molding conveying section; the rotating mechanism is connected with the transfer seat and used for driving the transfer seat to rotate; the positioning mechanism comprises a first positioning module arranged on the positioning conveying section, a first limiting side wall is arranged on the first positioning module and extends in the conveying direction of the positioning conveying section, and the distance between the first limiting side wall and the transfer seat rotating shaft is smaller than the distance between the positioning protrusion and the transfer seat rotating shaft. When the transferring mechanism drives the transferring seat to pass through the first positioning module, the rotating mechanism drives the transferring seat to rotate until the positioning protrusion is tightly attached to the first limiting side wall. The positioning device is ingenious in structure and high in positioning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of blow molding devices, and particularly to an automatic positioning blow molding feeding device. Background Art

[0002] During the blow molding production process, first, a tubular plastic preform is heated to a softened state at a heating station, and then the softened tubular plastic preform is sent to a blow molding station and placed into a blow molding mold. Then, compressed air is introduced into the tubular plastic preform to cause the tubular plastic preform to expand and adhere tightly to the inner wall of the mold. After cooling and demolding, a plastic product with a specific shape is obtained.

[0003] For some products with relatively low requirements, generally, a conveying device such as a conveyor belt chain is used to directly convey the tubular plastic preform from the heating station to the blow molding station for blow molding. For some products with relatively high requirements, there are strict standards for the positions of each groove, each mark, each label, etc. on each formed product. In order to obtain a standardized product, as Figure 1 shown, a positioning portion 61 is provided at the bottle mouth thread position of the tubular plastic preform. Before entering the blow molding station, the tubular plastic preform needs to be placed at a specified angle, that is, the positioning portion of the tubular plastic preform needs to be placed in a unified direction. However, during the heating and softening process of the tubular plastic preform at the heating station, it will continuously rotate to ensure uniform heating. Therefore, the directions of the positioning portions of the tubular plastic preforms coming out of the heating station are different, and it is impossible to directly convey the tubular plastic preforms from the heating station to the blow molding station by relying on existing conveying devices such as conveyor belt chains. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic positioning blow molding feeding device to solve the problem that it is impossible to directly convey the tubular plastic preforms from the heating station to the blow molding station by relying on existing conveying devices due to the different directions of the positioning portions of the tubular plastic preforms coming out of the heating station.

[0005] To solve the above problems, the present invention provides the following technical solutions: An automatic positioning blow molding feeding device, comprising a transfer seat, a transfer mechanism, a rotating mechanism and a positioning mechanism; a preform positioning and mounting portion and a positioning protrusion are provided on the transfer seat; the transfer mechanism comprises a transfer guide rail, and the transfer guide rail comprises a heating and conveying section, a blow molding conveying section, and a positioning conveying section provided between the heating and conveying section and the blow molding conveying section; the rotating mechanism is connected to the transfer seat and is used for driving the transfer seat to rotate; the positioning mechanism comprises a first positioning module provided on the positioning conveying section, a first limiting side wall is provided on the first positioning module, the first limiting side wall extends along the conveying direction of the positioning conveying section, and the distance from the first limiting side wall to the rotation axis of the transfer seat is smaller than the distance from the positioning protrusion to the rotation axis of the transfer seat; when the transfer mechanism drives the transfer seat to pass through the first positioning module, the rotating mechanism drives the transfer seat to rotate until the positioning protrusion abuts against the first limiting side wall.

[0006] For the automatic positioning blow molding feeding device as described above, the first positioning module is provided with an inlet end and an outlet end, an inlet inclined surface is provided on the lower end surface of the inlet end, when the rotating mechanism drives the transfer seat to rotate until the positioning protrusion contacts the front end surface of the inlet end, the positioning protrusion passes through the inlet end along the inlet inclined surface and then abuts against the first limiting side wall.

[0007] For the automatic positioning blow molding feeding device as described above, a first inlet arc surface is provided in front of the inlet inclined surface, a second inlet arc surface is provided behind the inlet inclined surface, and the radian of the first inlet arc surface is greater than the radian of the second inlet arc surface.

[0008] For the automatic positioning blow molding feeding device as described above, a plurality of weight-reducing holes are provided on the first positioning module.

[0009] For the automatic positioning blow molding feeding device as described above, the positioning mechanism comprises a second positioning module provided on the blow molding conveying section, the second positioning module is provided with a second limiting side wall, the second limiting side wall extends along the conveying direction of the blow molding conveying section, a positioning plate is provided on the transfer seat, and a positioning side wall matched with the second limiting side wall is provided on the positioning plate.

[0010] For the automatic positioning blow molding feeding device as described above, the positioning mechanism comprises a third positioning module provided between the first positioning module and the second positioning module, the third positioning module is provided with a third limiting side wall, and the third limiting side wall is matched with the positioning side wall.

[0011] An automatic positioning blow molding feeding device as described above, a rotating connection part connected to the rotating mechanism is provided on the transfer seat, the rotating connection part is arranged below the preform positioning and mounting part, the positioning plate is arranged between the preform positioning and mounting part and the rotating connection part, a positioning protrusion is arranged on the positioning plate and protrudes from the upper end surface of the positioning plate, a preform mounting groove and a preform positioning groove are provided on the preform positioning and mounting part, and the preform positioning groove communicates with the preform mounting groove.

[0012] An automatic positioning blow molding feeding device as described above further includes a positioning detection mechanism, and the positioning detection mechanism is arranged at the input end of the blow molding conveying section.

[0013] An automatic positioning blow molding feeding device as described above, the rotating mechanism includes a gear rotating seat connected to the transfer seat and a transmission member meshing with the gear rotating seat, and the transmission member is arranged on one side of the heating conveying section and the positioning conveying section.

[0014] An automatic positioning blow molding feeding device as described above, the transfer mechanism further includes a transfer assembly arranged on the transfer guide rail and a drive assembly connected to the transfer assembly for driving the transfer assembly to move along the transfer guide rail. The transfer assembly includes a connecting sleeve seat and a connecting plate. A plurality of the connecting sleeve seats are arranged at intervals along the conveying direction of the transfer guide rail, and a plurality of the connecting sleeve seats are respectively sleeved with the transfer seat in one-to-one correspondence. Each adjacent two of the connecting sleeve seats are connected by the connecting plate. The drive assembly includes a drive motor and a dial connected to the drive motor, and a plurality of arc-shaped grooves cooperating with the connecting sleeve seats are arranged on the dial.

[0015] Compared with the prior art, the present invention has the following advantages: 1. For an automatic positioning blow molding feeding device provided by the present invention, a tubular plastic preform is positioned and installed in the preform positioning and mounting part on the transfer seat. After the tubular plastic preform is heated and softened at the heating station of the heating conveying section, it first passes through the positioning conveying section and then enters the blow molding station of the blow molding conveying section. When the tubular plastic preform passes through the positioning conveying section, the rotating mechanism drives the transfer seat to rotate until the positioning protrusion on the transfer seat closely abuts against the first limiting side wall on the first positioning module and moves. Through the mutual cooperation of the rotating mechanism, the positioning protrusion and the first positioning module, automatic positioning is realized during the transfer of the positioning seat, so that after each tubular plastic preform passes through the positioning conveying section, the positioning part on the tubular plastic preform can enter the blow molding station in a unified direction. The structure of the present invention is ingenious, the positioning efficiency is high, and it is beneficial to realize continuous, automated and standardized production.

[0016] 2. For the automatic positioning blow molding feeding device provided by the present invention, an introduction inclined surface is provided on the lower end surface of the introduction end of the first positioning module. No matter what position the positioning protrusion is rotated to when the transfer seat approaches the first positioning module, the positioning protrusion can move along with the rotation of the transfer seat to closely adhere to the first limiting side wall, realizing automatic positioning. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a tubular plastic preform.

[0019] Figure 2 It is a schematic structural diagram of a formed product after blow molding of a tubular plastic preform.

[0020] Figure 3 It is a schematic structural diagram of an automatic positioning blow molding feeding device according to an embodiment of the present invention.

[0021] Figure 4 It is a partial structural schematic diagram of an automatic positioning blow molding feeding device according to an embodiment of the present invention Figure 1 .

[0022] Figure 5 It is a schematic structural diagram of the first positioning module of an automatic positioning blow molding feeding device according to an embodiment of the present invention.

[0023] Figure 6 It is a partial structural schematic diagram of an automatic positioning blow molding feeding device according to an embodiment of the present invention Figure 2 .

[0024] Figure 7 It is a schematic structural diagram of the driving component in an automatic positioning blow molding feeding device according to an embodiment of the present invention.

[0025] Figure 8 It is a schematic connection structure diagram of a tubular plastic preform, a transfer seat, a gear rotating seat, and a connecting sleeve seat in an automatic positioning blow molding feeding device according to an embodiment of the present invention.

[0026] Among them, the corresponding numbers of the reference numerals are as follows: 1. Transfer seat; 11. Preform positioning and mounting part; 111. Preform mounting groove; 112. Preform positioning groove; 12. Positioning protrusion; 13. Positioning plate; 131. Positioning side wall; 14. Rotating connection part; 2. Transfer mechanism; 21. Transfer guide rail; 211. Heating and conveying section; 212. Blow molding conveying section; 213. Positioning conveying section; 22. Transfer assembly; 221. Connecting sleeve seat; 222. Connecting plate; 23. Driving assembly; 231. Driving motor; 232. Dial; 2321. Arc-shaped groove; 3. Rotating mechanism; 31. Gear rotating seat; 32. Transmission part; 4. Positioning mechanism; 41. First positioning module; 410. First limiting side wall; 411. Inlet end; 4111. Inlet inclined surface; 4112. First inlet arc surface; 4113. Second inlet arc surface; 412. Outlet end; 413. Weight reduction hole; 42. Second positioning module; 420. Second limiting side wall; 43. Third positioning module; 430. Third limiting side wall; 5. Positioning detection mechanism; 6. Tubular plastic preform; 61. Positioning part; 7. Heating station; 8. Blow molding station. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to the attached Figure 1 to the attached Figure 8, this embodiment provides an automatic positioning blow molding feeding device, including a transfer seat 1, a transfer mechanism 2, a rotating mechanism 3 and a positioning mechanism 4; a preform positioning and installation part 11 and a positioning protrusion 12 are provided on the transfer seat 1; the transfer mechanism 2 includes a transfer guide rail 21, and the transfer guide rail 21 includes a heating and conveying section 211, a blow molding conveying section 212, and a positioning conveying section 213 provided between the heating and conveying section 211 and the blow molding conveying section 212; the rotating mechanism 3 is connected to the transfer seat 1 and is used to drive the transfer seat 1 to rotate; the positioning mechanism 4 includes a first positioning module 41 provided on the positioning conveying section 213, and a first limiting side wall 410 is provided on the first positioning module 41. The first limiting side wall 410 extends along the conveying direction of the positioning conveying section 213, and the distance from the first limiting side wall 410 to the rotation axis of the transfer seat 1 is less than the distance from the positioning protrusion 12 to the rotation axis of the transfer seat 1; when the transfer mechanism 2 drives the transfer seat 1 to pass through the first positioning module 41, the rotating mechanism 3 drives the transfer seat 1 to rotate until the positioning protrusion 12 on the transfer seat 1 closely adheres to the first limiting side wall 410. In the automatic positioning blow molding feeding device provided in this embodiment, the tubular plastic preform 6 is positioned and installed in the preform positioning and installation part 11 on the transfer seat 1. After being heated and softened at the heating station 7 of the heating and conveying section 211, the tubular plastic preform 6 first passes through the positioning conveying section 213 and then enters the blow molding station 8 of the blow molding conveying section 212. When the tubular plastic preform 6 passes through the positioning conveying section 213, the rotating mechanism 3 drives the transfer seat 1 to rotate so that the positioning protrusion 12 on the transfer seat 1 moves closely along the first limiting side wall 410 on the first positioning module 41. Through the mutual cooperation of the rotating mechanism 3, the positioning protrusion 12 and the first positioning module 41, automatic positioning is realized during the transfer of the positioning seat 1, so that after each tubular plastic preform 6 passes through the positioning conveying section 213, the positioning part 61 on the tubular plastic preform 6 can enter the blow molding station 8 in a unified direction. The structure is ingenious, the positioning efficiency is high, and it is conducive to realizing continuous, automated and standardized production.

[0029] In this embodiment, the first positioning module 41 is provided with an inlet end 411 and an outlet end 412. Since the distance from the first limiting side wall 410 to the rotation axis of the transfer seat 1 is less than the distance from the positioning protrusion 12 to the rotation axis of the transfer seat 1, when the transfer seat 1 is transferred close to the first positioning module 41, the rotating mechanism 3 drives the transfer seat 1 to rotate. Some positioning protrusions 12 on the transfer seat 1 just avoid the inlet end 411 and automatically approach and closely adhere to the first limiting side wall 410 as the moving seat 1 rotates, realizing automatic positioning; a small number of positioning protrusions 12 on the transfer seat 1 just contact the front end face of the inlet end 411 and cannot continue to approach and closely adhere to the first limiting side wall 410 as the transfer seat 1 rotates.

[0030] In order to further achieve automatic positioning, a guiding inclined surface 4111 is provided on the lower end surface of the guiding end 411 in this embodiment. When the rotating mechanism 3 drives the transfer seat 1 to rotate until the positioning protrusion 12 contacts the front end surface of the guiding end 411, the positioning protrusion 12 passes through the guiding end 411 along the guiding inclined surface 4111 and then closely adheres to the first limiting side wall 410. When the transfer seat 1 is moved close to the first positioning module 41 and the transfer seat 1 rotates until the positioning protrusion 12 just contacts the front end surface of the guiding end 411, as the transfer seat 1 continues to rotate, the positioning protrusion 12 moves along the guiding inclined surface 4111 and generates an oblique thrust on the guiding inclined surface 4111, thereby lifting the first positioning module 41. Thus, the positioning protrusion 12 can smoothly pass through the guiding end 411 and, as the transfer seat 1 continues to rotate, smoothly move to closely adhere to the first limiting side wall 410. By providing the guiding inclined surface 4111 on the lower end surface of the guiding end 411 of the first positioning module 41, no matter what position the positioning protrusion 12 is rotated to when the transfer seat 1 approaches the first positioning module 41, the positioning protrusion 12 can move to closely adhere to the first limiting side wall 410 as the transfer seat 1 rotates, achieving automatic positioning.

[0031] Furthermore, a number of weight-reducing holes 413 are provided on the first positioning module 41. If the weight of the first positioning module 41 is too large, it is difficult for the positioning protrusion 12 to lift the first positioning module 41 when moving along the guiding inclined surface 4111, or it is difficult for the positioning protrusion 12 to continue moving when moving along the guiding inclined surface 4111. Therefore, the appropriate weight of the first positioning module 41 is particularly important. In this embodiment, by providing the weight-reducing holes 413 on the first positioning module 41, the weight of the first positioning module 41 is made to be at an optimal value that can be lifted by the positioning protrusion 12 while not affecting the continuous movement of the positioning protrusion 12. The size and quantity of the weight-reducing holes 413 can be obtained through multiple tests according to the actual situation of the first positioning module 41 to obtain the optimal value.

[0032] Furthermore, in order to enable the positioning protrusion 12 to pass through the guiding inclined surface 4111 more smoothly, a first guiding arc surface 4112 is provided in front of the guiding inclined surface 4111 in this embodiment, and a second guiding arc surface 4113 is provided behind the guiding inclined surface 4111. Among them, the radian of the first guiding arc surface 4112 is greater than the radian of the second guiding arc surface 4113. The first guiding arc surface 4112 connects the front end surface of the guiding end 411 and the guiding inclined surface 4111, and its radian is relatively large, enabling the positioning protrusion 12 to smoothly enter the guiding inclined surface 4111 from the front end surface of the guiding end 411. The second guiding arc surface 4113 connects the guiding inclined surface 4111 and the lower end surface of the guiding end 411, and its radian is relatively small, serving as a transition between the guiding inclined surface 4111 and the lower end surface of the guiding end 411, with a reasonable and simple structure.

[0033] Further, the positioning mechanism 4 in this embodiment includes a second positioning module 42 provided on the blow molding conveying section 212. The second positioning module 42 is provided with a second limiting side wall 420, and the second limiting side wall 420 extends along the conveying direction of the blow molding conveying section 212. A positioning plate 13 is provided on the transfer seat 1, and a positioning side wall 131 that cooperates with the second limiting side wall 420 is provided on the positioning plate 13. When the transfer mechanism 2 drives the transfer seat 1 to pass by the second positioning module 42, the positioning side wall 131 on the positioning plate 13 closely adheres to the second limiting side wall 420 on the second positioning module 42. Based on the cooperation between the positioning protrusion 12 and the first positioning module 41 to achieve automatic positioning in this embodiment, a second positioning module 42 is also provided. Through the cooperation between the second limiting side wall 420 on the second positioning module 42 and the positioning side wall 131 on the positioning plate 13, secondary positioning is achieved, further improving the accuracy of positioning.

[0034] Further, the positioning mechanism 4 includes a third positioning module 43 provided between the first positioning module 41 and the second positioning module 42. The third positioning module 43 is provided with a third limiting side wall 430, and the third limiting side wall 430 cooperates with the positioning side wall 131. When the transfer mechanism 2 drives the transfer seat 1 to pass by the third positioning module 43, the positioning side wall 131 on the positioning plate 13 closely adheres to the third limiting side wall 430 on the third positioning module 43.

[0035] Further, the heating conveying section 211 and the blow molding conveying section 212 are straight conveying sections. The positioning conveying section 213 can be a straight conveying section or an arc conveying section. In this embodiment, the positioning conveying section 213 is an arc conveying section; correspondingly, the first limiting side wall 410 is an arc surface, the second limiting side wall 420 is a flat surface, one end of the third limiting side wall 430 close to the first limiting side wall 410 is provided with an arc surface, and one end of the third limiting side wall 430 close to the second limiting side wall 420 is provided with a flat surface. Since both the second limiting side wall 420 and the third limiting side wall 430 cooperate with the positioning plate 13, the second limiting side wall 420 and the third limiting side wall 430 are of the same height. Since the first limiting side wall 410 cooperates with the positioning protrusion 12, the lower end surface of the first limiting side wall 410 is higher than the upper end surface of the positioning plate 13 to avoid interference between the first limiting side wall 410 and the positioning plate 13.

[0036] Furthermore, an automatic positioning blow molding feeding device according to this embodiment further includes a positioning detection mechanism 5, and the positioning detection mechanism 5 is arranged at the input end of the blow molding conveying section 212. The positioning detection mechanism 5 includes two infrared sensors, and the two infrared sensors respectively detect two adjacent transfer seats 1. When the two infrared sensors simultaneously detect the positioning protrusion 12, it indicates that the two transfer seats 1 are correctly positioned. When one of the infrared sensors detects the positioning protrusion 12 and the other infrared sensor does not detect the positioning protrusion 12, it indicates that the latter transfer seat 1 is not correctly positioned. By providing the positioning detection mechanism 5, the positioning effect can be verified in a timely manner, and at the same time, abnormal positioning conditions can also be detected in a timely manner, which is conducive to realizing continuous automated standardized production.

[0037] Furthermore, the rotating mechanism 3 includes a gear rotating seat 31 connected to the transfer seat 1 and a transmission member 32 meshing with the gear rotating seat 31, and the transmission member 32 is arranged on one side of the heating conveying section 211 and the positioning conveying section 213. The transmission member 32 can be a chain or a rack and other transmission mechanisms. In this embodiment, a chain is adopted. The chain of this embodiment is arranged in a ring shape, and sprockets are provided at both ends of the chain. The sprockets are connected to a motor, and the motor drives the sprockets to rotate, thereby driving the chain to move, and further driving the gear rotating seat 31 meshing with the chain to rotate. The mechanism is simple and has good stability.

[0038] Specifically, the transmission member 32 is arranged on one side of the heating conveying section 211 and the positioning conveying section 213. For the heating conveying section 211, with the cooperation of the gear rotating seat 31 and the transmission member 32, the rotating mechanism 3 drives the transfer seat 1 to continuously rotate, and the technical effect of enabling the tubular plastic parison 6 on the transfer seat 1 to be heated evenly can be achieved; for the positioning conveying section 213, with the cooperation of the gear rotating seat 31 and the transmission member 32, the rotating mechanism 3 drives the transfer seat 1 to rotate, and the technical effect of enabling the positioning protrusion 12 on the transfer seat 1 to closely adhere to the first limiting side wall 410 can be achieved.

[0039] Furthermore, the transfer mechanism 2 further includes a transfer component 22 disposed on the transfer guide rail 21 and a drive component 23 connected to the transfer component 22 for driving the transfer component 22 to move along the transfer guide rail 21. The transfer component 22 includes a connecting socket seat 221 and a connecting plate 222. A plurality of the connecting socket seats 221 are arranged at intervals along the conveying direction of the transfer guide rail 21, and the plurality of connecting socket seats 221 are respectively sleeved with the transfer seats 1 in one-to-one correspondence. Each adjacent pair of the connecting socket seats 221 is connected by the connecting plate 222. The drive component 23 includes a drive motor 231 and a dial 232 connected to the drive motor 231. A plurality of arc-shaped grooves 2321 cooperating with the connecting socket seats 221 are provided on the dial 232. When the drive motor 231 drives the dial 232 to rotate, the connecting socket seats 221 are driven to move, so as to drive the transfer seat 1 to move. By connecting every two adjacent connecting socket seats 221 through the connecting plate 222, a unified spacing can be maintained between each transfer seat 1, facilitating the automated operation of processes such as positioning detection and blow molding.

[0040] Specifically, a rotation connection portion 14 connected to the rotation mechanism 3 is provided on the transfer seat 1 of this embodiment. The rotation connection portion 14 is disposed below the preform positioning and installation portion 11. The positioning plate 13 is disposed between the preform positioning and installation portion 11 and the rotation connection portion 14. The positioning protrusion 12 is provided on the positioning plate 13 and protrudes from the upper end surface of the positioning plate 13. Specifically, the rotation connection portion 14 of the transfer seat 1 is connected to the gear rotating seat 31, so that the rotation mechanism 3 can drive the transfer seat 1 to rotate. The gear rotating seat 31 is further connected to the connecting socket seat 221, so that the transfer mechanism 2 can drive the transfer seat 1 to move. Among them, the gear rotating seat 31 can rotate relative to the connecting socket seat 221. It can be that there is a fitting gap between the gear rotating seat 31 and the connecting socket seat 221, or there is a rolling bearing between the gear rotating seat 31 and the connecting socket seat 221.

[0041] More specifically, a preform installation groove 111 and a preform positioning groove 112 are provided on the preform positioning and installation portion 11. The preform positioning groove 112 communicates with the preform installation groove 111. During installation, first place the pipe orifice of the tubular plastic preform 6 into the preform installation groove 111 of the preform positioning and installation portion 11, and then place the positioning portion 61 of the tubular plastic preform 6 into the preform installation groove 111, thus completing the positioning and installation of the tubular plastic preform 6 and the transfer seat 1.

[0042] Furthermore, the heating station 7 of this embodiment is arranged on the heating conveying section 211. There are two heating plates on the heating station 7. The two heating plates are arranged in parallel on both sides of the heating conveying section 211. Heating elements such as heating wires are provided on the heating plates. The transfer mechanism 2 drives the transfer seat 1 to move along the heating conveying section 211 through the heating station 7. At the same time, the rotating mechanism 3 drives the transfer seat 1 to rotate. Thus, when the tubular plastic preform 6 passes through the heating station 7, it can rotate continuously to ensure uniform heating. The blow molding station 8 of this embodiment is arranged on the blow molding conveying section 212. A split blow molding die is provided on the blow molding station 8. When the tubular plastic preform 6 is automatically positioned after passing through the positioning conveying section 213 and enters the blow molding station 8 of the blow molding conveying section 212, the blow molding die closes. Then, compressed air is introduced into the tubular plastic preform 6 to blow up the tubular plastic preform 6 so that it clings to the inner wall of the blow molding die. After cooling and demolding, a plastic product with a specific shape is obtained.

[0043] It should be understood that in the present invention, terms such as "first" and "second" are used to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, "first" information can also be called "second" information. Similarly, "second" information can also be called "first" information. In addition, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0044] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and deformations can be made, and these improvements and deformations are also regarded as the protection scope of the present invention.

Claims

1. An automatic positioning blow molding feeding device, characterized in that: The invention comprises a transfer seat (1), a transfer mechanism (2), a rotating mechanism (3) and a positioning mechanism (4); the transfer seat (1) is provided with a preform positioning mounting portion (11) and a positioning protrusion (12); the transfer mechanism (2) comprises a transfer guide rail (21), the transfer guide rail (21) comprises a heating conveying section (211), a blow moulding conveying section (212), and a positioning conveying section (213) arranged between the heating conveying section (211) and the blow moulding conveying section (212); the rotating mechanism (3) is connected to the transfer seat (1) and is used to drive the transfer seat (1) to rotate; the positioning mechanism (4) comprises a positioning conveying section (213) arranged between the positioning conveying section (211) and the blow moulding conveying section (212); (213), the first positioning module (41) is provided with a first limiting side wall (410), the first limiting side wall (410) is extended along the conveying direction of the positioning conveying section (213), the distance between the first limiting side wall (410) and the rotation axis of the transfer seat (1) is smaller than the distance between the positioning protrusion (12) and the rotation axis of the transfer seat (1); when the transfer mechanism (2) drives the transfer seat (1) to pass through the first positioning module (41), the rotation mechanism (3) drives the transfer seat (1) to rotate until the positioning protrusion (12) is in close contact with the first limiting side wall (410).

2. The automatic positioning blow molding feeding device according to claim 1, characterized in that: The first positioning module (41) is provided with an introduction end (411) and an outlet end (412), and the lower end surface of the introduction end (411) is provided with an introduction slope (4111). When the rotating mechanism (3) drives the transfer seat (1) to rotate until the positioning protrusion (12) contacts the front end surface of the introduction end (411), the positioning protrusion (12) passes through the introduction end (411) along the introduction slope (4111) and then closely abuts against the first limiting side wall (410).

3. The automatic positioning blow molding feeding device according to claim 2, characterized in that: A first introduction arc surface (4112) is provided in front of the introduction inclined surface (4111), and a second introduction arc surface (4113) is provided behind the introduction inclined surface (4111), and the curvature of the first introduction arc surface (4112) is greater than the curvature of the second introduction arc surface (4113).

4. The automatic positioning blow molding feeding device according to claim 1, characterized in that: The first positioning module (41) is provided with a plurality of weight-reducing holes (413).

5. The automatic positioning blow molding feeding device according to claim 1, characterized in that: The positioning mechanism (4) comprises a second positioning module (42) arranged on the blow molding conveying section (212), the second positioning module (42) being provided with a second limiting side wall (420), the second limiting side wall (420) being extended along the conveying direction of the blow molding conveying section (212), the transfer seat (1) being provided with a positioning plate (13), the positioning plate (13) being provided with a positioning side wall (131) cooperating with the second limiting side wall (420).

6. The automatic positioning blow molding feeding device according to claim 5, characterized in that: The positioning mechanism (4) comprises a third positioning module (43) arranged between the first positioning module (41) and the second positioning module (42), the third positioning module (43) being provided with a third limiting side wall (430), the third limiting side wall (430) cooperating with the positioning side wall (131).

7. The automatic positioning blow molding feeding device according to claim 5, characterized in that: The transfer seat (1) is provided with a rotating connection part (14) connected to the rotating mechanism (3); the rotating connection part (14) is arranged below the mold blank positioning and mounting part (11); the positioning plate (13) is arranged between the mold blank positioning and mounting part (11) and the rotating connection part (14); the positioning protrusion (12) is arranged on the positioning plate (13) and protrudes from the upper end surface of the positioning plate (13); the mold blank positioning and mounting part (111) is provided with a mold blank mounting groove (111) and a mold blank positioning groove (112); the mold blank positioning groove (112) is connected to the mold blank mounting groove (111).

8. The automatic positioning blow molding feeding device according to claim 1, characterized in that: It also comprises a positioning detection mechanism (5), wherein the positioning detection mechanism (5) is arranged at the input end of the blow moulding conveying section (212).

9. An automatic positioning blow molding feeding device according to any one of claims 1 to 8, characterized in that: The rotating mechanism (3) comprises a gear rotating seat (31) connected to the transfer seat (1) and a transmission member (32) meshing with the gear rotating seat (31), wherein the transmission member (32) is arranged on one side of the heating conveying section (211) and the positioning conveying section (213).

10. An automatic positioning blow molding feeding device according to any one of claims 1 to 8, characterized in that: The transfer mechanism (2) further comprises a transfer assembly (22) arranged on the transfer guide rail (21) and a drive assembly (23) connected to the transfer assembly (22) for driving the transfer assembly (22) to move along the transfer guide rail (21); the transfer assembly (22) comprises a connecting sleeve (221) and a connecting plate (222); a plurality of the connecting sleeves (221) are arranged at intervals along the conveying direction of the transfer guide rail (21); and a plurality of the connecting sleeves (221) are respectively sleeved with the transfer seat (1) in a one-to-one correspondence; and every two adjacent connecting sleeves (221) are connected via the connecting plate (222); the drive assembly (23) comprises a drive motor (231) and a dial (232) connected to the drive motor (231); and a plurality of arc-shaped grooves (2321) are provided on the dial (232) for matching with the connecting sleeve (221).

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