Lifting transmission mechanism of bottom mould in bottle blowing machine

Abstract

The application discloses a lifting transmission mechanism of a bottom mould of a bottle blowing machine, which comprises a supporting base and a sliding groove vertically fixed on the supporting base, a sliding rail in the sliding groove is fixed with a T-shaped support, the T-shaped support comprises a support top plate and a support connecting rod, the sliding rail and the support connecting rod are arranged on two sides of the support connecting rod, first and second connecting shafts are arranged at upper and lower ends of a connecting rod respectively, the first connecting shaft is fixed on the T-shaped support, the upper end of the connecting rod is rotatably connected with the first connecting shaft, and the second connecting shaft is fixed on the connecting rod; a connecting plate is rotatably connected with the second connecting shaft, a driving shaft for being connected with a lifting driving mechanism is fixedly arranged on the connecting plate, a third connecting shaft is fixedly arranged on the connecting plate below the second connecting shaft, and both ends of the third connecting shaft are rotatably and movably supported on the supporting base. The application has the advantages that stress is reasonable, there is no deflection or shaking, the precision of the lifting position of the bottom mould can be greatly improved, and the bottle blowing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of blow molding machine technology, specifically to the lifting drive and transmission mechanism of the bottom mold in a blow molding machine. Background Technology

[0002] Blow molding machines are key equipment for producing plastic containers for liquid packaging. The mold frame in a blow molding machine mainly consists of a pair of side molds and a bottom mold. During the opening and closing motion of the pair of side molds, the bottom mold needs to cooperate with the side molds to move up and down or remain stationary relative to the side molds in order to achieve mold closing, then blowing of the container, and finally mold opening and removal of the formed container.

[0003] A transmission mechanism is installed between the bottom mold and the drive mechanism. The drive mechanism controls the lifting and lowering of the bottom mold through the transmission mechanism. The transmission mechanism must ensure that all its components are subjected to reasonable forces, are accurately positioned, and do not wobble between components to ensure that the bottom mold's lifting, lowering, and resting positions are accurate, without deflection or wobbling. This further ensures that the mold opening and closing actions are accurate and effectively improves the efficiency of container blowing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a lifting transmission mechanism for the bottom mold in a blow molding machine, which has a stable structure, reasonable force distribution, and good stability, and can effectively ensure the precise movement position of the bottom mold, thereby ensuring the precise and reliable opening and closing of the mold.

[0005] To solve the above problems, the technical solution adopted by the present invention is: a lifting transmission mechanism for the bottom mold in a blow molding machine, comprising: a support base, a slide groove vertically fixedly installed on the support base, a slide rail provided in the slide groove, the slide rail being fixedly connected to a T-shaped support, the T-shaped support including a horizontally arranged support top plate for installing the bottom mold, a support connecting rod vertically arranged at the bottom of the support top plate, and the slide rail being fixedly installed on one side of the support connecting rod;

[0006] A connecting rod is provided on the other side of the support connecting rod. A first connecting shaft and a second connecting shaft are respectively provided at the upper and lower ends of the connecting rod. The first connecting shaft is fixedly supported on the T-shaped support. The upper end of the connecting rod is movably connected to the first connecting shaft and can rotate around the first connecting shaft. The second connecting shaft is fixedly installed on the lower end of the connecting rod. A connecting plate is movably provided on the second connecting shaft and can rotate around the second connecting shaft. A drive shaft for connecting with the lifting drive mechanism is fixedly provided on the connecting plate. A third connecting shaft is fixedly provided on the connecting plate below the second connecting shaft. The two ends of the third connecting shaft are rotatably supported on the support base. The first, second, and third connecting shafts are parallel to each other and are all horizontally arranged.

[0007] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold includes a connection structure between the first connecting shaft and the T-shaped support: the end of the support top plate of the T-shaped support located on one side of the connecting rod is bent downward to form a support connecting lug, and the two ends of the first connecting shaft are respectively fixedly supported on the support connecting rod and the support connecting lug.

[0008] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold includes a connection structure between the connecting rod and the first connecting shaft comprising: a first bearing mounting seat at the upper end of the connecting rod, a first bearing in the first bearing mounting seat, the first connecting shaft being movably supported in the first bearing, a first locking step on the first connecting shaft, the first locking step being located at the end of the first bearing near the support connecting lug, a spacer on the first connecting shaft, the spacer being located between the first bearing and the support connecting rod, a first bearing cover plate on the outer side of the end of the first bearing near the support connecting lug, the first bearing cover plate being locked on the first bearing mounting seat, the two ends of the outer ring of the first bearing being locked between the first bearing cover plate and the first bearing mounting seat, and the two ends of the inner ring of the first bearing being locked between the first locking step and the spacer.

[0009] Furthermore, in the aforementioned lifting transmission mechanism of the bottom mold in the blow molding machine, the movable connection structure between the second connecting shaft and the connecting plate includes: a second bearing mounting seat is provided on the connecting plate, a second bearing is provided in the second bearing mounting seat, the outer end of the second connecting shaft is movably supported in the second bearing, a second bearing cover plate is locked and fixed on the connecting plate outside the second bearing, the two ends of the outer ring of the second bearing are blocked by the second bearing cover plate and the second bearing mounting seat, the two ends of the inner ring of the second bearing are blocked on the baffle and the second blocking step, the baffle is fastened to the outer end of the second connecting shaft by locking screws, and the second blocking step is provided on the outer wall of the second connecting shaft.

[0010] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold, wherein both the first bearing and the second bearing are double-row ball bearings.

[0011] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold has a second connecting shaft mounting hole at the lower end of the connecting rod. The second connecting shaft is installed in the second connecting shaft mounting hole. Two limit screw holes are opened on the connecting rod at the position of the second connecting shaft mounting hole. Each limit screw hole is equipped with a limit screw for locking and limiting the second connecting shaft.

[0012] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold has a connecting plate in the shape of a triangle.

[0013] Furthermore, in the aforementioned lifting transmission mechanism of the bottom mold in the blow molding machine, the support base structure includes a support base body, with a connecting side plate provided on the outer side of the support base body. The connecting side plate wraps around from one end of the support base body to the other end, and an installation space is formed by hollowing out between the connecting side plate and the support base body. The connecting side plate includes a first connecting side plate located at both ends of the support base body, and a second connecting side plate connected between the first connecting side plates at both ends. The support connecting rod, slide groove, slide rail, and connecting rod are all located within the installation space. The first connecting side plate is located on both sides of the slide groove, and the second connecting side plate is located between the connecting plate and the support connecting rod.

[0014] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold has a slide groove positioning hole on the first connecting side plate, and a fastening screw for positioning the slide groove is installed in the slide groove positioning hole.

[0015] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold includes a connection structure between the third connecting shaft and the support base, comprising: the two ends of the third connecting shaft being movably supported in a third bearing and a fourth bearing, respectively; the third bearing being mounted on an L-shaped support, the L-shaped support comprising a vertical connecting part and a horizontal connecting part; the third bearing being mounted on the vertical connecting part, the vertical connecting part being located on the outside of the connecting plate; the bottom of the vertical connecting part being bent to form a horizontal connecting part; the horizontal connecting part extending into and being fixed to the bottom of the second connecting side plate; and the fourth bearing being mounted on the second connecting side plate of the support base.

[0016] Furthermore, in the aforementioned blow molding machine, the lifting transmission mechanism of the bottom mold uses a flexible rod as the connecting rod.

[0017] The advantages of this invention are: its simple and ingenious structure, through the arrangement of multiple simply supported mechanisms, greatly improves the stability and reliability of the entire transmission mechanism. The entire transmission mechanism is subjected to reasonable force, without deflection or swaying, greatly improving the accuracy of the bottom mold's lifting position, thereby significantly increasing the bottle blowing efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the lifting and transmission mechanism of the bottom mold in a blow molding machine according to the present invention.

[0019] Figure 2 This is a schematic diagram of the internal connection structure of the lifting transmission mechanism of the bottom mold in a blow molding machine according to the present invention.

[0020] Figure 3 yes Figure 1 A schematic diagram of the middle connecting rod.

[0021] Figure 4 yes Figure 1 A schematic diagram of the middle connecting plate. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the lifting transmission mechanism for the bottom mold in a blow molding machine includes: a support base 1, a slide groove 2 vertically fixedly installed on the support base 1, a slide rail 3 provided in the slide groove 2, and the slide rail 3 fixedly connected to a T-shaped support 4. The T-shaped support 4 includes a horizontally arranged support top plate 41 for installing the bottom mold, and a support connecting rod 42 vertically arranged at the bottom of the support top plate 41. The slide rail 3 is fixedly installed on one side of the support connecting rod 42.

[0024] A connecting rod 5 is provided on the other side of the support connecting rod 42. In this embodiment, the connecting rod 5 is a flexible rod. Compared with rigid rods, flexible rods combine rigidity and flexibility, and can generate a certain deformation when the external force is too large, thereby avoiding breakage. A first connecting shaft 6 and a second connecting shaft 7 are respectively provided at the upper and lower ends of the connecting rod 5. The first connecting shaft 6 is fixedly supported on the T-shaped support 4, and the upper end of the connecting rod 5 is movably connected to the first connecting shaft 6, and the upper end of the connecting rod 5 can rotate around the first connecting shaft 6. Specifically, the connection structure between the first connecting shaft 6 and the T-shaped support 4 includes: the end of the support top plate 41 of the T-shaped support 4 located on the side of the connecting rod 5 is bent downward to form a support connecting lug 43, and the two ends of the first connecting shaft 6 are fixedly supported on the support connecting rod 42 and the support connecting lug 43, respectively.

[0025] In this embodiment, the movable connection structure between the connecting rod 5 and the first connecting shaft 6 includes: a first bearing mounting seat 51 is provided at the upper end of the connecting rod 5; a first bearing 52 is provided in the first bearing mounting seat 51; the first connecting shaft 6 is movably supported in the first bearing 52; a first locking step 62 is provided on the first connecting shaft 6, located at the end of the first bearing 52 near the support connecting lug 43; a spacer 61 is also provided on the first connecting shaft 6, located between the first bearing 52 and the support connecting rod 42; a first bearing cover plate 53 is provided on the outer side of the end of the first bearing 52 near the support connecting lug 43; the first bearing cover plate 53 is locked onto the first bearing mounting seat 51; the two ends of the outer ring of the first bearing 52 are locked between the first bearing cover plate 53 and the first bearing mounting seat 51; and the two ends of the inner ring of the first bearing 52 are locked between the first locking step 62 and the spacer 61. The spacer 61 provides a good positioning function. The first bearing 52 is a double-row ball bearing. The movable connection structure between the connecting rod 5 and the first connecting shaft 6 defines the axial position of both the connecting rod 5 and the first connecting shaft 6. The use of double-row ball bearings further ensures that the axial displacement of the connecting rod 5 and the first connecting shaft 6 is limited to the clearance range of the double-row ball bearings, effectively preventing wobbling of the connecting rod 5 and the first connecting shaft 6, thus greatly improving the stability and accuracy of the bottom mold movement. Simultaneously, a simply supported mechanism is formed between the connecting rod 5 and the first connecting shaft 6, ensuring stability and reliability.

[0026] The second connecting shaft 7 is fixedly installed at the lower end of the connecting rod 5. Specifically, the lower end of the connecting rod 5 is provided with a second connecting shaft mounting hole 54, and the second connecting shaft 7 is installed in the second connecting shaft mounting hole 54. Two limit screw holes 55 are opened on the connecting rod 5 at the position of the second connecting shaft mounting hole 54, and a limit screw for locking and limiting the second connecting shaft 7 is installed in each limit screw hole 55.

[0027] A connecting plate 8 is movably mounted on the second connecting shaft 7, and the connecting plate 8 can rotate around the second connecting shaft 7. In this embodiment, the connecting plate 8 is triangular in shape, which provides good stability. Specifically, the movable connection structure between the second connecting shaft 7 and the connecting plate 8 includes: a second bearing mounting seat 81 is provided on the connecting plate 8, a second bearing 82 is provided in the second bearing mounting seat 81, the outer end of the second connecting shaft 7 is movably supported in the second bearing 82, a second bearing cover plate 83 is provided and locked on the connecting plate 8 outside the second bearing 82, the two ends of the outer ring of the second bearing 82 are blocked by the second bearing cover plate 83 and the second bearing mounting seat 81, the two ends of the inner ring of the second bearing 82 are blocked by a baffle 84 and a second blocking step 85, the baffle 84 is fastened to the outer end of the second connecting shaft 7 by locking screws, and the second blocking step 85 is provided on the outer wall of the second connecting shaft 7.

[0028] The connection structure between the second connecting shaft 7 and the connecting plate 8 defines their axial positions. The use of double-row ball bearings further ensures that the axial displacement of the second connecting shaft 7 and the connecting plate 8 is limited to the clearance range of the double-row ball bearings, effectively preventing wobbling between them and further improving the stability and accuracy of the bottom mold movement. Furthermore, the connecting plate 8 and the second connecting shaft 7 form a simply supported mechanism, ensuring a reliable and stable connection.

[0029] A drive shaft 86 for connecting to a lifting drive mechanism is fixedly mounted on the connecting plate 8. A third connecting shaft 9 is fixedly mounted on the connecting plate 8 below the second connecting shaft 7. The two ends of the third connecting shaft 9 are rotatably supported on the support base 1. The first connecting shaft 6, the second connecting shaft 7, and the third connecting shaft 9 are parallel to each other and horizontally arranged. In this embodiment, the fixed installation structure between the connecting plate 8 and the third connecting shaft 9 includes: a third connecting shaft mounting hole 87 is opened on the connecting plate 8; a third connecting shaft limiting hole 88 is opened on the connecting plate 8 at the position of the third connecting shaft mounting hole 87; and a third connecting shaft limiting screw is provided in the third connecting shaft limiting hole 88.

[0030] In this embodiment, the support base 1 includes a support base body 11. A connecting side plate 12 is provided on the outer side of the support base body 11. The connecting side plate 12 surrounds from one end of the support base body 11 to the other end of the support base body 11, and an installation space is formed by hollowing out the connecting side plate 12 and the support base body 11. The connecting side plate 12 includes a first connecting side plate 121 located at both ends of the support base body 11, and a second connecting side plate 122 connected between the first connecting side plates 121 at both ends. The second connecting side plate 122 is located below the third connecting shaft 9, and the arrangement of the second connecting side plate 122 does not affect the installation and movement of the connecting rod 5 and the third connecting shaft 9.

[0031] The support connecting rod 42, slide groove 2, slide rail 3 and connecting rod 5 are all located within the installation space; the first connecting side plate 121 is located on both sides of the slide groove 2, and the second connecting side plate 122 is located between the connecting plate 8 and the support connecting rod 42.

[0032] In this embodiment, a slide groove positioning hole 1211 is provided on the first connecting side plate 121, and a fastening screw for positioning the slide groove 2 is provided in the slide groove positioning hole 1211.

[0033] In this embodiment, the connection structure between the third connecting shaft 9 and the support base 1 includes: both ends of the third connecting shaft 9 are movably supported in a third bearing 91 and a fourth bearing 92, respectively. The third bearing 91 is disposed on an L-shaped support 13. Specifically, the L-shaped support 13 in this embodiment includes a vertical connecting part 131 and a horizontal connecting part 132. The third bearing 91 is installed on the vertical connecting part 131, and the vertical connecting part 132 is located on the outside of the connecting plate 8. The bottom of the vertical connecting part 131 is bent to form the horizontal connecting part 132, which extends into and is fixed to the bottom of the second connecting side plate 122. The fourth bearing 92 is installed on the second connecting side plate 122 of the support base 1. In the above-described connection structure between the third connecting shaft 9 and the support base 1, both ends of the third connecting shaft 9 are formed by simple support mechanisms, resulting in good support stability.

[0034] When the drive shaft 86 is driven by the lifting drive mechanism, causing the third connecting shaft 9 on the connecting plate 8 to rotate in the forward or reverse direction in the third bearing 91 and the fourth bearing 92, the connecting rod 5 will drive the T-shaped support 4 to rise or fall under the guidance of the slide groove 2 and the slide rail 3, thereby realizing the motion control of the bottom mold rising or falling.

[0035] The lifting transmission mechanism for the bottom mold in the blow molding machine described in this invention, through the arrangement of multiple simply supported mechanisms, greatly improves the stability and reliability of the entire transmission mechanism's movement. The entire transmission mechanism is subjected to reasonable force, without deflection or swaying, thereby significantly improving the accuracy of the bottom mold's lifting position and thus increasing blow molding efficiency.

Claims

1. A lifting transmission mechanism of a bottom mold in a bottle blowing machine, comprising: The support seat is vertically fixedly installed with the sliding groove, and the sliding rail is arranged in the sliding groove, characterized in that the sliding rail is fixedly connected with the T-shaped support, the T-shaped support comprises a horizontally arranged support top plate for installing a bottom die, and a support connecting rod is vertically arranged at the bottom of the support top plate; and the sliding rail is fixedly installed on one side of the support connecting rod. The other side of the support connecting rod is provided with a connecting rod, and the upper and lower ends of the connecting rod are respectively provided with a first connecting shaft and a second connecting shaft; the first connecting shaft is fixedly supported on the T-shaped support, the upper end of the connecting rod is movably connected with the first connecting shaft, and the upper end of the connecting rod can rotate around the first connecting shaft; and the second connecting shaft is fixedly installed on the lower end of the connecting rod. A connecting plate is movably arranged on the second connecting shaft, the connecting plate can rotate around the second connecting shaft, a driving shaft for being connected with a lifting driving mechanism is fixedly arranged on the connecting plate, a third connecting shaft is fixedly arranged on the connecting plate below the second connecting shaft, and the two ends of the third connecting shaft are movably supported on the support seat; the first connecting shaft, the second connecting shaft and the third connecting shaft are parallel to each other and are all horizontally arranged.

2. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 1, characterized in that: The connecting structure between the first connecting shaft and the T-shaped support comprises that the end of the support top plate of the T-shaped support on the side of the connecting rod is bent downward to form a support connecting lug, and the two ends of the first connecting shaft are fixedly supported on the support connecting rod and the support connecting lug respectively.

3. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 2, characterized in that: The connecting structure between the connecting rod and the first connecting shaft comprises that the upper end of the connecting rod is provided with a first bearing mounting seat, a first bearing is arranged in the first bearing mounting seat, the first connecting shaft is movably supported in the first bearing, a first clamping step is arranged on the first connecting shaft, the first clamping step is located at the end of the first bearing close to the support connecting lug, a spacer sleeve is further arranged on the first connecting shaft, the spacer sleeve is located between the first bearing and the support connecting rod, a first bearing cover plate is arranged on the outer side of the first bearing close to the support connecting lug, the first bearing cover plate is locked on the first bearing mounting seat, the two ends of the outer ring of the first bearing are clamped between the first bearing cover plate and the first bearing mounting seat, and the two ends of the inner ring of the first bearing are clamped between the first clamping step and the spacer sleeve.

4. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 1 or 3, characterized in that: The movable connecting structure between the second connecting shaft and the connecting plate comprises that a second bearing mounting seat is arranged on the connecting plate, a second bearing is arranged in the second bearing mounting seat, the outer end of the second connecting shaft is movably supported in the second bearing, a second bearing cover plate is locked and fixed on the connecting plate on the outer side of the second bearing, the two ends of the outer ring of the second bearing are clamped by the second bearing cover plate and the second bearing mounting seat, the two ends of the inner ring of the second bearing are clamped on a baffle and a second clamping step, the baffle is fastened on the outer end of the second connecting shaft by a locking screw, and the second clamping step is arranged on the outer wall of the second connecting shaft.

5. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 4, characterized in that: The first bearing and the second bearing are both double-row ball bearings.

6. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 4, characterized in that: The lower end of the connecting rod is provided with a second connecting shaft mounting hole, the second connecting shaft is mounted in the second connecting shaft mounting hole, two limiting screw holes are formed in the connecting rod at the position of the second connecting shaft mounting hole, and a limiting screw for locking the second connecting shaft is arranged in each limiting screw hole.

7. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 1, characterized in that: The connecting plate is in the shape of a triangle.

8. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 1, characterized in that: The structure of the support seat comprises a support seat body, an outer side of the support seat body is provided with a connecting side plate, the connecting side plate is wrapped from one end of the support seat body to the other end of the support seat body, and a mounting space is formed between the connecting side plate and the support seat body; the connecting side plate comprises a first connecting side plate located at two ends of the support seat body and a second connecting side plate connected between the first connecting side plates; the support seat connecting rod, the sliding groove, the sliding rail and the connecting rod are located in the mounting space; the first connecting side plate is located on both sides of the sliding groove, and the second connecting side plate is located between the connecting plate and the support seat connecting rod.

9. The bottom mold lifting drive of a bottle blowing machine according to claim 8, characterized in that: The first connecting side plate is provided with a sliding groove positioning hole, and a fastening screw for positioning the sliding groove is arranged in the sliding groove positioning hole.

10. The bottom mold lifting drive mechanism of a bottle blowing machine according to claim 8, characterized in that: The connecting structure between the third connecting shaft and the support seat comprises that both ends of the third connecting shaft are movably supported in a third bearing and a fourth bearing, the third bearing is arranged on an L-shaped support, the L-shaped support comprises a vertical connecting part and a horizontal connecting part, the third bearing is mounted on the vertical connecting part, the vertical connecting part is located on the outer side of the connecting plate, the bottom of the vertical connecting part is bent to form the horizontal connecting part, the horizontal connecting part extends into the bottom of the second connecting side plate and is fixed thereto, and the fourth bearing is mounted on the second connecting side plate of the support seat.

11. The lift drive mechanism for a bottom mold of a bottle blowing machine according to claim 1, wherein: The connecting rod is a flexible rod.

Images