TWM474623U - Blow molding device for rotary bottle blowing machine - Google Patents

Description

Blow molding device for rotary blow molding machine

The present invention provides a blow molding apparatus for a rotary blow molding machine which is related to a blow molding apparatus.

The apparatus for performing blow molding in the blow molding process is a blow molding machine, as shown in Figs. 1 and 2, which is a blow molding apparatus disclosed in U.S. Patent No. 8,100,688, which is mainly a blow molding apparatus 10 A drive shaft 12 is pivotally disposed on a fixed support base 11, and a fixed die 13 is further fixed on the support base 11, and a movable die 14 pivotable relative to the fixed die 13 is fixed. The bottom side of the die 13 is further provided with a cam groove 131. At the same time, the drive shaft 12 is coupled to the movable die 14 through a first link set 15 perpendicular to the drive shaft 12, and transmits a direction different from the drive shaft 12. The second link set 16 is coupled to a bottom mold 17, and the bottom mold 17 is further coupled to a cam 171. The cam 171 of the bottom mold 17 is movably received in the cam groove 131; thereby, the drive shaft 12 rotates. The movable mold 14 is pivoted relative to the fixed mold 13 and the bottom mold 17 is driven by the first link set 15 and the second link set 16 to make the bottom mold 17 follow the cam 171 along the cam. The groove 131 is raised and lowered to complete the simultaneous movement of the left and right opening and closing molds and the bottom mold lifting and lowering; The blow molding apparatus 10 mainly drives the movable mold to generate the opening and closing mold and the driving bottom mold by the rotating driving shaft 12, and the two sets of connecting rods 15 and 16 having different extending directions respectively, and the two groups of the vertical driving shaft 12 are connected. The rod sets 15, 16 will become the weakness of the overall structure, and both ends of the two link sets 15, 16 are The pivoting type is connected to the driving shaft 12, the movable mold 14 and the bottom mold 17, and each pivot point is related to the smoothness, precision and efficiency of the overall movement, and the structural precision and quality requirements of the overall device are difficult to accurately control. Therefore, there is a lack of difficulty in assembly, a high cost of the device, and a lack of precision to be controlled. In addition, as shown in FIGS. 3 and 4, the US Patent Publication No. US20120177771A1 "Blow Molding Apparatus", the blow molding apparatus 20 The fixed mold 22 is fixedly disposed on one side of the fixed platform 21, and the bottom 211 is sleeved on the other side, and the bottom mold 23 is further disposed. The platform 21 is further provided with a first rotating shaft 24 and a second rotating shaft 25 . The first rotating shaft 24 is coupled to a movable mold 26 via a first connecting block 241. The outer surface of the movable mold 26 has a vertical angle resisting recess 261, and the first connecting block 241 is further transmitted through a vertical axis 24 The connecting rod 27 extending in the direction of 25 is coupled to the second connecting block 251 fixed to the second rotating shaft 25, and both ends of the connecting rod 27 are pivotally coupled, and the second rotating shaft 25 is further connected. A pair should resist the shape of the recess 261 In order to perform the opening and closing operation of the movable mold 26 and the fixed mold 22 and the lifting operation of the bottom mold 23, it is necessary to drive the bottom mold 23 with a lifting drive source for driving the bottom mold 23 up and down. The lifting and the driving source for driving the rotation of the first rotating shaft 24 drives the rotation of the first rotating shaft 24, which is complicated in overall structure and high in overall structure cost; and in operation, the first rotating shaft 24 rotates to drive the first connecting block 241 and the movable mold 26 pivot to generate an opening and closing mold operation, and the link 27 connected to the first connecting block 241 also acts to drive the second connecting block 251 to move, and the second connecting block 251 drives the second connecting block 251. The rotating shaft 25 and the resisting block 252 thereon generate a pivoting action. When the movable mold 26 generates a clamping action, the resisting block 252 also acts at the same time and is mortgaged to the resisting recess 261 of the movable mold 26 when the clamping operation is completed. The resisting block 26 is stably resisted by the resisting block 252 to withstand the tension of the movable mold during the film blowing process, thereby ensuring the processing precision and the yield; however, the US Patent Publication No. US20120177771A1 "Blow Molding Design" In addition to the overall structural complexity, the need to have two sets of driving sources for lifting and opening and closing, and the cost is high, the overall structure must be arranged perpendicular to the rotation axes 24, 25 in addition to the respective rotating shafts 24, 25. The connecting rod 27 can drive the resisting block 252 to operate, and the connecting rod 27 different from the extending direction of each of the rotating shafts 24, 25 is configured as a weak point of the overall structure, and the connecting ends of the connecting rods 27 are pivotally connected, which is also the same as the prior art. The structural accuracy and quality requirements of the whole device are high and difficult to control accurately, and the assembly difficulty is high, the device cost is high, and the accuracy is difficult to control, and the improvement is lacking; further, as shown in Figures 5 and 6, the German public publication DE102008045569A1 is shown. No. Patent "Blow Molding Apparatus", which is mainly driven by a driving source 31 to drive a control member 32. The control member 32 has a first cam portion 321 and a second cam portion 322. The control member 32 is further connected to the opening and closing driving member 34 via a connecting rod 33. One side of the opening and closing driving member 34 is coupled to the first cam member by a first roller member 341 and a second roller member 342 respectively. Department 321 and the first The other side of the opening and closing member 34 pivots the first driving rod 343 and the second driving rod 344. The first driving rod 343 and the second driving rod 344 are respectively coupled to a molding die 35, 36; thereby, the driving source 31 drives the control member 32 to rotate, and when the control member 32 rotates, the first cam portion 321 and the second cam portion 322 rotate synchronously, and the first The positions of the first roller portion 321 and the second cam portion 322 are changed correspondingly to the positions of the first cam portion 321 and the second cam portion 322, and the configuration of the first cam portion 321 and the second cam portion 322 are designed to The opening and closing of the driving member 34 is displaceable, and the position of the first driving rod 343 and the second driving rod 344 can be simultaneously changed while the opening and closing driving member 34 is displaced, thereby the first driving rod 343 and The second driving rod 344 drives the two forming dies 35 and 36 to open and close; thus, it can be seen that the "Blow Molding Apparatus" of the German Patent No. DE 10 2008 045 569 A1 can achieve the purpose of driving the opening and closing mold, but still cannot be the same. Institutional drive bottom mold There is still room for improvement in the action of lowering the clamping mode; moreover, the control member of the blow molding device 30 must be driven in addition to the opening and closing driving member, and the opening and closing driving member must pass through the opposite The first driving rod 343 and the second driving rod 344 are pivoted to complete the action, and the action of the opening and closing driving member to drive the opening and closing mold is indirectly driven, and the direct driving manner will result in lower overall operation efficiency and accurate operation. The lack of difficulty in degree control; from the various techniques known from the above, each blow molding equipment still has the lack of operational precision, complex structure or low operational efficiency. In view of this, the creator has devoted himself to research and deeper conceiving. After many trials and developments, I finally created a blow molding machine for a rotary blow molding machine.

The present invention provides a blow molding device for a rotary blow molding machine, the main purpose of which is to improve the lack of operational precision, complicated structure or low operational efficiency of conventional blow molding devices.

In order to achieve the foregoing objective, the present invention provides a blow molding device for a rotary blow molding machine, comprising: a support platform having a through hole; a coaxial drive device disposed adjacent to the support platform, the coaxial drive device including a first along A first control unit and a second control unit are fixedly disposed on the drive shaft extending in the direction, the first control unit has a first control unit, and the second control unit has a second control unit, the first control unit The portion is a cam groove extending in a depth in the first direction, and the second control portion is a channel including at least one of the two lifting sections, and the lifting section is symmetrically disposed and has an angle with the first direction; a fixed mold fixedly and non-rotatably disposed on the support platform; a movable mold coupled to a movable mold shaft and rotatably disposed on the support platform, the movable mold shaft being pivoted by the first control portion Driving the movable mold to open and close with respect to the fixed mold; and a bottom mold mechanically coupled to the support platform in a first direction relative to the through hole, and the bottom mold is driven by the second control portion to Lift in one direction.

For the same purpose as described above, the present invention further provides a blow molding device for a rotary blow molding machine, comprising: a support platform having a through hole; and a coaxial drive device disposed adjacent to the support platform, the coaxial drive device including an edge a first control unit and a second control unit are fixedly disposed on the drive shaft extending in the first direction, the first control unit has a first control unit, and the second control unit has a second control unit. a control portion is a cam groove extending in a depth in a first direction, and the second control portion is a guide groove including at least two lifting sections, and the lifting section is symmetrically disposed and has an angle with the first direction; The movable mold is coupled to a movable mold shaft and rotatably disposed on the support platform. The movable mold shaft is pivoted by the first control portion to drive the movable mold relative to the movable mold. The fixed mold is opened and closed; and a bottom mold is mechanically coupled to the support platform in a first direction relative to the through hole, and the bottom mold is driven by the second control portion Lifting a first direction, comprising a portion of the bottom die in conjunction with a cover portion, the base portion defines a gas flow passage, a first end of the gas flow channel The port is open to the side of the seat, and a second port at the other end is adjacent to the cover, and the first port opened to the seat is for inputting high pressure gas.

The creation only needs to drive the coaxial driving device to rotate, and the first control unit and the second control unit on the coaxial driving device can simultaneously drive the movable mold to open and close the mold through the rotating action, and simultaneously drive the bottom mold to lift and lower, the overall structure It is simple, and the stable combination of components can improve the stability of operation and improve the operation efficiency.

[study]

10‧‧‧Blow molding equipment

11‧‧‧ Support

12‧‧‧Drive shaft

13‧‧‧Fixed mode

131‧‧‧ cam slot

14‧‧‧ movable mold

15‧‧‧First Link Set

16‧‧‧Second linkage

17‧‧‧Bottom mode

171‧‧‧ cam

20‧‧‧Blow molding equipment

21‧‧‧ platform

211‧‧‧ column

22‧‧‧Fixed mode

23‧‧‧Bottom mode

24‧‧‧First shaft

241‧‧‧First link block

25‧‧‧second shaft

251‧‧‧Second link

252‧‧‧Resistance block

26‧‧‧ movable mold

261‧‧‧Resist the recess

27‧‧‧ Connecting rod

30‧‧‧Blow molding equipment

31‧‧‧ drive source

32‧‧‧Controls

321‧‧‧First Cam Department

322‧‧‧Second cam department

33‧‧‧ Connecting rod

34‧‧‧Opening and driving parts

341‧‧‧First roll

342‧‧‧Second roller

343‧‧‧First moving rod

344‧‧‧Second rod

35‧‧‧ Forming die

36‧‧‧ Forming die

[this creation]

40‧‧‧Support platform

41‧‧‧through hole

42‧‧‧Fixed extension block

421‧‧‧ Guides

50‧‧‧ coaxial drive

51‧‧‧Drive shaft

52‧‧‧First Control Unit

521‧‧‧First Control Department

53‧‧‧Second Control Unit

531‧‧‧Second Control Department

532‧‧‧First Maintenance Section

533‧‧‧second maintenance section

534‧‧‧lifting section

54‧‧‧ third control unit

541‧‧ Third Control Department

60‧‧‧Fixed mode

70‧‧‧ movable mold

71‧‧‧ movable mold shaft

72‧‧‧ first joint block

73‧‧‧ movable mold drive

74‧‧‧Molded parts

741‧‧‧Stop the hook

742‧‧‧With the bevel

80‧‧‧Bottom mode

81‧‧‧With guides

82‧‧‧Bottom mold drive

83‧‧‧

831‧‧‧ gas flow channel

832‧‧‧ first port

833‧‧‧second port

84‧‧‧ 盖部

85‧‧‧Airtight gasket

90‧‧‧Clamping unit

91‧‧‧Clamping shaft

92‧‧‧Lock module

921‧‧‧active hook

922‧‧‧Guiding bevel

93‧‧‧ third binding block

94‧‧‧Lock module driver

D1‧‧‧ first direction

H1‧‧‧ first height

H2‧‧‧second height

Fig. 1 is a view showing a state of opening of a first conventional blow molding apparatus.

Fig. 2 is a view showing a mold clamping state of the first conventional blow molding apparatus.

Fig. 3 is a view showing the state of the opening of the second conventional blow molding apparatus.

Fig. 4 is a view showing a state of clamping of a second conventional blow molding apparatus.

Fig. 5 is a view showing a state of opening of a third conventional blow molding apparatus.

Fig. 6 is a view showing a clamping state of a third conventional blow molding apparatus.

Fig. 7 is a perspective view showing the mold opening state of the blow molding device of the rotary bowl type blowing machine.

Fig. 8 is a plan view showing the open state of the blow molding device of the rotary bowl type blowing machine.

Fig. 9 is a plan view showing the mold clamping state of the blow molding device of the present rotary blow molding machine.

Fig. 10 is a plan view showing the mold opening state of the blow molding device of the present rotary blow molding machine.

Fig. 11 is a plan view showing the mold clamping state of the blow molding device of the present rotary blow molding machine.

Fig. 12 is a perspective view showing the mold clamping state of the blow molding device of the present rotary blow molding machine.

Figure 13 is a partial cross-sectional view showing the blow molding apparatus of the present rotary blow molding machine.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [simplified description of the drawings] for details:

A preferred embodiment of a blow molding apparatus for a rotary blow molding machine, as shown in FIGS. 7 to 13, includes: a support platform 40 having a through hole 41, and one side of the support platform 40 is formed to have a fixed extension a guiding member 421 extending along a first direction D1 is disposed on the fixed extension block 42. The guiding member 421 of the embodiment is a sliding rail; and a coaxial driving device 50 is disposed adjacent to the supporting platform 40. The coaxial drive device 50 includes a first control unit 52, a second control unit 53, and a third control unit 54 fixedly disposed on the drive shaft 51 extending in the first direction D1, so that the drive shaft 51 and the first A control unit 52, the second control unit 53 and the third control unit 54 both rotate around the first direction D1, and the first control unit 52 has a first control unit 521 and the second control unit 53. The second control unit 531 has a third control unit 541. The first control unit 521 and the third control unit 541 are located at different heights of the first direction D1, and the second The control unit 531 is located in the first control unit 521 and the first The first control unit 52, the second control unit 53, and the third control unit 54 of the present embodiment are both cylindrical structures, and the diameter of the first control unit 52 is larger than the third control unit 54. The diameter of the third control unit 54 is larger than the diameter of the second control unit 53; and the first control unit 521 and the third control unit 541 of the embodiment respectively The first control section 532 is a guide slot including a first maintaining section 532, a second maintaining section 533, and two lifting sections 534, and the first maintaining section 532 is configured to extend the depth of the cam slot in the first direction D1. The second maintaining section 533 is parallel and the lifting section 534 is respectively connected between the two ends of the maintaining sections 532, 533, and the first maintaining section 532 extends at a first height H1 in the first direction D1. The second maintaining section 533 extends at a second height H2 in the first direction D1, the first height H1 and the second height H2 are located at different heights in the first direction D1, and the lifting section 534 is symmetrically disposed and An inclined state having an angle with the first direction D1; a fixed mold 60 fixedly and non-rotatably disposed on the support platform 40; a movable mold 70 coupled to a movable mold shaft 71 and rotatably disposed on the support On the platform 40, one end of the movable mold shaft 71 is rotatably disposed through the support platform 40 and coupled to the side of the movable mold 70, and the other end penetrates the support platform 40 and is coupled with a first binding block 72. A combining block 72 is further combined with a movable mold driving member 73, the movable mold The movable member 73 is received in the first control unit 521 of the first control unit 52 of the coaxial drive unit 50 and controlled by the first control unit 521, whereby the movable mold shaft 71 can be received by the first control unit 52. The movable mold 70 is driven to open and close with respect to the fixed mold 60, and the movable mold driving member 73 and the movable mold rotating shaft 71 respectively extend in the first direction D1; and the other side of the movable mold 70 A mold clamping member 74 is disposed. The mold clamping member 74 has a locking hook portion 741, and the stopping hook portion 741 has a matching inclined surface 742. The bottom mold 80 is slidable on one side by a mating guiding member 81. The mating guide member 81 is a slider, and the mating guide member 81 of the embodiment is a slider, so as to be mechanically coupled to the support platform 40 along the first direction D1 and sliding relative to the through hole 41, The other side of the bottom mold 80 is provided with a bottom mold driving member 82. The bottom mold driving member 82 extends into the second control portion 531 of the second control unit 53 of the coaxial driving device 50. The second control unit 53 is received by the second control unit 53. Controlled; and the bottom mold 80 includes a portion 83 knot A cover portion 84 is defined. The seat portion 83 defines a gas flow passage 831. A first port 832 at one end of the gas flow passage 831 is open to the side of the seat portion 83, and a second port 833 at the other end is adjacent to the cover portion. a portion 84, and a hermetic gasket 85 is further disposed between the seat portion 83 and the cover portion 84, the first port 832 opened to the seat portion 83 is configured to input high-pressure gas; and a clamping unit 90 includes a lock The mold shaft 91 and a lock module 92 are pivotally inserted through the fixed mold 60 and coupled with the lock module 92, and the other end is coupled with a third joint block 93. The lock module driver 94 is received in the third control unit 541 of the third control unit 54 of the coaxial drive unit 50 and controlled by the third control unit 541. The lock module driver 94 and The lock mold shaft 91 extends in the first direction D1, and the lock module 92 has an active hook portion 921, and the active hook portion 921 has a guide slope 922.

The above is the structural configuration and features of the blow molding device of the rotary blow molding machine, and in operation, the drive shaft 51 of the coaxial drive device 50 is driven to rotate by a driving source, so that the drive shaft 51 is synchronously driven. The first control unit 52, the second control unit 53, and the third control unit 54 rotate, and when the first control unit 52, the second control unit 53, and the third control unit 54 rotate, the first control The unit 52, the second control unit 53 and the first control unit 521, the second control unit 531 and the third control unit 541 on the third control unit 54 change the position angle to drive the movable mold 70 respectively. The bottom mold 80 and the lock module 92 are actuated; and the first control unit 521, the second control unit 531, and the third control unit 541 are operated by the first control unit 521 and the second The control unit 531 and the movable mold driver 73, the bottom mold driver 82, and the lock module driver 94 in the third control unit 541 can follow the first control unit 521, the second control unit 531, and the third control unit 541. Changing the position of the contour; and when the movable mold belt When changing the position of member 73 will be able to simultaneously through the first junction The block 72 drives the movable mold 70 to change position, and can change to the open mode of the seventh, eighth, and tenth views, or the mold clamping state as shown in the figures 9, 11, and 12; and when the bottom mold is driven When the position is changed 82, the bottom mold 80 can directly drive the height raising and lowering operation in the first direction D1, and when the movable mold 70 is in the mold opening state, the bottom mold 80 is lowered in the first direction D1. Position, and when the movable mold is in the mold clamping state, the bottom mold 80 is raised to a higher position in the first direction D1; and when the lock module driving member 94 changes position, the third joint block 93 can be transmitted. The lock module 92 is driven to change the position, and when the movable mold 70 is in the mold opening state, the lock module 92 is disengaged from the mold clamping fitting 74 on the movable mold 70. When the movable mold 70 is in the mold clamping state, the The lock module 92 is displaced adjacent to the mold-locking member 74, and is guided by the mating ramp 742 and the guiding ramp 922 when the mating ramp 742 is engaged with the guiding ramp 922, and finally the active of the lock module 92 is enabled. The hook portion 921 hooks the stopping hook portion 741 positioned on the clamping mold fitting 74 to make the movable mold 70 and the fixed mold 60 is clamped and forms a lock.

As can be seen from the above, the first control unit 521, the second control unit 531, and the third control unit 541 of the coaxial drive unit 50 can be simultaneously driven by the single drive source to drive the coaxial drive unit 50 to rotate. The movable mold 70 is opened and closed, the bottom mold 80 is lifted and the lock module 92 is locked or loosened, and the opening and closing mold and the mold clamping operation can be simultaneously and quickly achieved after one driving force input, and the overall structure is simplified. The energy source for the structure and the driving can be reduced, and the driving source for driving the coaxial driving device 50 in this embodiment is a servo motor; in addition, the first control unit 521, the second control unit 531, and the first The manner in which the three control units 541 drive the movable mold driving member 73, the bottom mold driving member 82 and the locking module driving member 94 is directly determined by the groove structure of different strikes or shapes, and the precision of the driving action is high and very certain. And the direct driving method can improve the efficiency of driving action; at the same time, the combined state of each component in the creation is a stable combined state, except In addition to the higher structural strength and longer service life, the stability and certainty of the operation are also improved, and at the same time, the operational stability and efficiency of the rear opening and closing mold can be ensured.

In addition, since the present invention is mainly applied to the blow molding process of blow molding, when the blow molding is performed after the mold clamping, the movable mold 70, the fixed mold 60, and the bottom mold 80 must respectively withstand the internal blow expansion. Stress, and the mold clamping unit 90 of the present invention can stably lock the movable mold 70 and the fixed mold 60, and the bottom mold 80 can enter the bottom of the bottom mold 80 through the high pressure air input from the first port 832. The high-pressure air presses the lid portion 84 of the bottom mold 80, whereby the bottom mold 80 can exert a force against the application of the bottom mold 80 at the time of blow molding, thereby ensuring stability and processing accuracy in the forming process.

40‧‧‧Support platform

41‧‧‧through hole

42‧‧‧Fixed extension block

421‧‧‧ Guides

50‧‧‧ coaxial drive

51‧‧‧Drive shaft

52‧‧‧First Control Unit

521‧‧‧First Control Department

53‧‧‧Second Control Unit

531‧‧‧Second Control Department

532‧‧‧First Maintenance Section

533‧‧‧second maintenance section

534‧‧‧lifting section

54‧‧‧ third control unit

541‧‧ Third Control Department

60‧‧‧Fixed mode

70‧‧‧ movable mold

71‧‧‧ movable mold shaft

72‧‧‧ first joint block

73‧‧‧ movable mold drive

74‧‧‧Molded parts

741‧‧‧Stop the hook

742‧‧‧With the bevel

80‧‧‧Bottom mode

81‧‧‧With guides

82‧‧‧Bottom mold drive

83‧‧‧

832‧‧‧ first port

84‧‧‧ 盖部

90‧‧‧Clamping unit

91‧‧‧Clamping shaft

92‧‧‧Lock module

921‧‧‧active hook

922‧‧‧Guiding bevel

93‧‧‧ third binding block

94‧‧‧Lock module driver

D1‧‧‧ first direction

Claims (10)

A blow molding device for a rotary blow molding machine, comprising: a support platform having a through hole; a coaxial drive device disposed adjacent to the support platform, the coaxial drive device comprising a fixed arrangement on a drive shaft extending in a first direction a first control unit and a second control unit, the first control unit has a first control unit, and the second control unit has a second control unit, the first control unit has a depth extending in the first direction a cam slot, wherein the second control portion is at least one of the two lifting sections, the lifting section is symmetrically disposed and has an angle with the first direction; a fixed die is fixedly and non-rotatably disposed on the supporting platform; a movable mold coupled to a movable mold shaft and rotatably disposed on the support platform, the movable mold shaft is pivoted by the first control portion to drive the movable mold to open and close with respect to the fixed mold; and a bottom mold And slidingly mechanically coupled to the support platform in a first direction relative to the through hole, and the bottom mold is driven by the second control portion to move up and down in the first direction. The blow molding device of the rotary blow molding machine according to claim 1, wherein one end of the movable mold shaft is rotatably disposed through the support platform and coupled to one side of the movable mold, and the other end is Through the support platform. The blow molding device of the rotary blow molding machine according to claim 1, wherein one end of the movable mold shaft is rotatably disposed through the support platform and coupled to one side of the movable mold, and the other end is The first end of the movable mold shaft is coupled to a first joint block, and the first joint block is coupled with a movable mold carrier, and the movable mold carrier is received in the first control portion. The control unit controls the driving, and the movable mold driving member and the movable mold The rotating shafts respectively extend in the first direction. The blow molding device of the rotary blow molding machine according to claim 1, wherein one side of the support platform is formed with a fixed extension block, and the fixed extension block is provided with a guide extending along the first direction. a guiding member, wherein one side of the bottom mold is slidably sleeved on the guiding member by a mating guiding member, and is displaceable in a first direction, the guiding member is a sliding rail, and the fitting guiding member is Slider. The blow molding device of the rotary blow molding machine according to claim 1, wherein one side of the support platform is formed with a fixed extension block, and the fixed extension block is provided with a guide extending along the first direction. a guiding member, wherein one side of the bottom mold is slidably sleeved on the guiding member with a mating guiding member, and is displaceable in a first direction, and a bottom mold driving member is disposed on the other side of the bottom mold. The bottom mold driving member extends into the second control portion and is controlled by the second control unit. The blow molding device of the rotary blow molding machine according to the first aspect of the invention, wherein the second control unit comprises a first maintaining section, a second maintaining section and a second lifting section, the first maintaining section Parallel to the second maintaining section, the two lifting sections are respectively connected between two ends of the maintaining section, and the first maintaining section and the second maintaining section are located at different height positions in the first direction. The blow molding device of the rotary blow molding machine according to claim 1, wherein a third control unit is further fixed on the drive shaft of the coaxial drive device, and the third control unit has a third a control portion, the third control portion is a cam groove extending in a depth in a first direction, and the fixed mold is pivotally coupled to a lock module by a mold clamping shaft, and the other end of the lock mold shaft coupled with the lock module In combination with a third binding block, the third binding block is combined with a locking module driving member, and the locking module driving member is received in the third control portion and controlled by the third control portion, the locking module driving member and the locking device The mold shafts all extend in the first direction, and the lock module has an active hook portion, and one side of the movable mold is provided with a mold clamping fitting, the mold clamping mating member has a stop a hook portion, the third control portion drives the lock module to pivot or loose relative to the mold clamping fitting. The blow molding device of the rotary blow molding machine according to claim 7, wherein the restraining hook portion of the mold clamping fitting has a matching inclined surface, and the active hook portion of the locking module has a guiding The inclined surface can assist the hook positioning by guiding the matching inclined surface and the guiding inclined surface when the stopping hook portion is in contact with the active hook portion. The blow molding device of the rotary blow molding machine according to the first aspect of the invention, wherein the bottom mold comprises a portion coupled to a cover portion, the seat portion defines a gas flow passage, and one end of the gas flow passage The first port is open to the side of the seat, and the second port of the other end is adjacent to the cover. An airtight gasket is further disposed between the seat and the cover, and the first port is open to the seat. Enter high pressure gas. A blow molding device for a rotary blow molding machine, comprising: a support platform having a through hole; a coaxial drive device disposed adjacent to the support platform, the coaxial drive device comprising a fixed arrangement on a drive shaft extending in a first direction a first control unit and a second control unit, the first control unit has a first control unit, and the second control unit has a second control unit, the first control unit has a depth extending in the first direction a cam slot, wherein the second control portion is at least one of the two lifting sections, the lifting section is symmetrically disposed and has an angle with the first direction; a fixed die is fixedly and non-rotatably disposed on the supporting platform; a movable mold coupled to a movable mold shaft and rotatably disposed on the support platform, the movable mold shaft is pivoted by the first control portion to drive the movable mold to open and close with respect to the fixed mold; and a bottom mold Mechanically coupled to the support platform in a first direction relative to the through hole, and the The bottom mold is driven by the second control portion to rise and fall in a first direction, the bottom mold includes a portion coupled to a cover portion, the seat portion defines a gas flow passage, and a first port at one end of the gas flow passage is open to the seat portion The second port of the other end is adjacent to the cover, and the first port opened to the seat is for inputting high pressure gas.