Bottle blowing machine mold height adjusting mechanism and adjusting and fixing method thereof

Abstract

The invention discloses a bottle blowing machine mold height adjusting mechanism and an adjusting and fixing method thereof. The bottle blowing machine mold height adjusting mechanism comprises an upper limiting boss arranged on the top of a mold frame shaft, a cushion block, an adjusting sleeve, a Haver block and a gasket, an inner threaded hole is formed in the middle of the cushion block, a pressing seam is formed in the side wall of the cushion block, and a pressing bolt is arranged on the cushion block; the adjusting sleeve is composed of a rotating section and a connecting section; the adjusting sleeve and the cushion block are arranged at the bottom of the die frame shaft in a sleeved mode, the lower end of the cushion block abuts against the die frame support, the adjusting sleeve supports the die opening and closing frame through the thrust bearing, the connecting section is screwed into an inner threaded hole in the cushion block, the pressing seam becomes smaller under pressing of the pressing bolt, and the half block is locked to the top of the cylindrical section of the die frame shaft. An adjusting gap is reserved between the half block and the upper limiting boss, a gasket is clamped in the adjusting gap in a sleeved mode, and the half block limits the mold opening and closing frame through a thrust bearing. The mold height adjusting mechanism of the bottle blowing machine can quickly and accurately adjust the height of a bottle blowing mold, the adjusting difficulty is reduced, the adjusting time is greatly saved, and the fastening mode is stable and reliable.

Description

Technical Field

[0001] The invention relates to the field of bottle blowing machines, and in particular to a mold height adjustment mechanism for bottle blowing machines. Background Art

[0002] The blow molding machine is a key equipment for producing empty plastic bottles for various liquid packaging. The empty plastic bottle is blown from the preform. The heated preform is sent to the blow molding mold. The sealing unit seals the bottle mouth. The stretching unit stretches the preform and injects high-pressure gas according to a certain process to make the preform stick to the mold wall and form an empty bottle. The blow molding machine has strict requirements for each process and high requirements for mutual coordination. Among them, taking the preform into the mold, sealing and taking the bottle all have high requirements for the height accuracy of the blow molding mold. The blow molding mold is installed on the mold opening and closing frame. The mold opening and closing frame is usually installed on the mold frame shaft. The cylindrical section on the mold frame shaft vertically passes through the rear end of the mold opening and closing frame. The mold frame shaft is arranged vertically, and its two ends are respectively installed with the mold frame bracket of the blow molding machine. The traditional method of adjusting the height of the blow molding mold: (1) by adding a gasket between the mold frame bracket and the mold opening and closing frame. This adjustment method is more troublesome, difficult to adjust, and inefficient. (2) There is another adjustment method in which the height is adjusted at the bottom and then the round nut is tightened at the top to fix it. The disadvantage of this adjustment method is that during the tightening of the round nut, the shaft passing through the mold shell will move upward, causing the screw of the locking shaft to be subjected to shear force, which affects the service life of the screw. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a blow molding machine mold height adjustment mechanism and its adjustment and fixing method which can quickly and accurately adjust the height of the blow molding mold, reduce the adjustment difficulty, greatly save the adjustment time and have a stable and reliable fastening method.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a height adjustment mechanism for a blow molding machine mold, comprising: a mold frame shaft, a mold frame bracket, a mold opening and closing frame for installing a blow molding mold, an upper limit boss arranged on the top of the cylindrical section of the mold frame shaft, a cushion block, an adjustment sleeve, a Havers block, and a plurality of gaskets, wherein a vertically arranged internal threaded hole is arranged in the middle of the cushion block, a pressure seam extending into the internal threaded hole is arranged on the side wall of the cushion block, a pressing bolt is arranged on the upper surface of the cushion block, and the pressing bolt is threadedly connected to the cushion block after passing downward through the pressure seam; the adjusting sleeve is formed by axially connecting a rotating section and a connecting section, the rotating section is located above the connecting section, and an external thread is arranged on the outer side of the connecting section; the Havers block consists of two semi-circular grooves. The blocks are locked; the gasket is provided with an avoidance notch that enables the gasket to be clamped on the cylindrical section of the mold frame shaft; the adjusting sleeve and the gasket block are mounted on the bottom of the cylindrical section of the mold frame shaft, the lower end of the gasket block is abutted against the mold frame bracket, the adjusting sleeve supports the mold opening and closing frame through the thrust bearing mounted on the mold frame shaft, the connecting section on the adjusting sleeve is screwed into the internal threaded hole on the gasket, the pressure seam becomes smaller under the pressure of the pressing bolt, thereby preventing the adjusting sleeve from loosening by destroying the thread in the internal threaded hole, the haver block is locked to the top of the cylindrical section of the mold frame shaft, an adjustment gap is left between the haver block and the upper limit boss, the adjusting gap is tightly plugged with a gasket, and the haver block presses and limits the mold opening and closing frame through the thrust bearing mounted on the mold frame shaft.

[0005] Furthermore, in the aforementioned mold height adjustment mechanism for a bottle blowing machine, a rotating hole for driving the adjusting sleeve to rotate is provided on the rotating section.

[0006] Furthermore, in the aforementioned height adjustment mechanism for the mold of a bottle blowing machine, the thickness specifications of the gasket are as follows: 0.05mm, 0.1mm, and 0.2mm.

[0007] Furthermore, in the aforementioned height adjustment mechanism for the mold of a bottle blowing machine, wrench planes are respectively provided on both sides of the cushion block.

[0008] A method for adjusting and fixing a height adjustment mechanism of a blow molding machine mold, the method steps are as follows: (1) The connecting section on the adjusting sleeve is screwed into the internal threaded hole on the cushion block, so that the adjusting sleeve and the cushion block are threadedly connected. At this time, the lower end of the adjusting sleeve does not extend out of the lower end of the cushion block, and the adjusting sleeve does not block the pressing bolt on the cushion block, so that the pressing bolt can be screwed. Then the connected adjusting sleeve and cushion block are mounted on the bottom of the cylindrical section of the mold frame shaft, and the lower end of the cushion block is abutted against the mold frame bracket. A thrust bearing is mounted on the mold frame shaft between the adjusting sleeve and the mold opening and closing frame. The adjusting sleeve supports the mold opening and closing frame through the thrust bearing. The Haver block is locked to the top of the cylindrical section of the mold frame shaft. An adjustment gap is left between the Haver block and the upper limit boss. A thrust bearing is also mounted on the mold frame shaft between the Haver block and the mold opening and closing frame. The Haver block performs an upper limit on the mold opening and closing frame through the thrust bearing, so that the mold opening and closing frame cannot move upward. (2) When adjusting the height of the blow molding mold, loosen the connection between the mold opening and closing frame and the mold frame bracket and the Havers block so that the mold opening and closing frame can move up and down. Then, drive the adjustment sleeve to rotate forward by external force on the rotating section, so that the adjustment sleeve rises until the mold opening and closing frame is raised to the required height. Then, rotate the adjustment sleeve in the opposite direction N° so that the adjustment sleeve moves downward a short distance. Then, insert the gasket into the adjustment gap until the gasket can no longer be inserted. Then, rotate the adjustment sleeve forward N° so that the mold opening and closing frame is raised to the required height and each gasket is fully compressed. Then, tighten the Havers block and tighten the pressing bolt to prevent the adjustment sleeve from loosening and rotating.

[0009] Furthermore, in the aforementioned method for adjusting and fixing the height adjustment mechanism of a blow molding machine mold, N is 20-40.

[0010] The advantages of the present invention are as follows: the mold height adjustment mechanism for the bottle blowing machine can quickly and accurately adjust the height of the bottle blowing mold, reduce the difficulty of adjustment, greatly save adjustment time, and the fastening method is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The figure is a schematic diagram of the installation of the bottle blowing mold in the bottle blowing machine of the present invention.

[0012] Figure 2 It is a schematic diagram of the structure of the mold frame shaft.

[0013] Figure 3 This is a schematic diagram of the structure of the pad.

[0014] Figure 4 It is a schematic diagram of the structure of the adjustment sleeve. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with specific embodiments and drawings.

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a mold height adjustment mechanism for a bottle blowing machine comprises: a mold frame shaft 1, a mold frame bracket 12, a mold opening and closing frame 13 for installing a bottle blowing mold, an upper limit boss 2 processed on the top of a cylindrical section 14 of the mold frame shaft 1, a cushion block 3, an adjustment sleeve 4, a Havers block 5, and a plurality of gaskets. A vertically arranged internal threaded hole 6 is provided in the middle of the cushion block 3, a pressure seam 7 extending into the internal threaded hole 6 is provided on the side wall of the cushion block 3, a pressing bolt 8 is provided on the upper surface of the cushion block 3, and the pressing bolt 8 is threadedly connected with the cushion block 3 after passing downward through the pressure seam 7; the adjusting sleeve 4 is formed by axially connecting a rotating section 9 and a connecting section 10, the rotating section 9 is located above the connecting section 10, an external thread is provided on the outer side of the connecting section 10, and a rotating hole 11 for driving the adjusting sleeve 4 to rotate is provided on the rotating section 9. In actual applications, a rotating plane can also be provided on the rotating section 9, and a wrench clamps the rotating After the plane is formed, the adjusting sleeve 4 can also be driven to rotate; the Haver block 5 is composed of two half blocks locked together; the gasket is provided with an avoidance notch that enables the gasket to be sleeved on the cylindrical section 14 of the mold frame shaft; the adjusting sleeve 4 and the gasket 3 are sleeved on the bottom of the cylindrical section 14 of the mold frame shaft 1, and the lower end of the gasket 3 is abutted against the mold frame bracket 12, and the adjusting sleeve 4 supports the mold opening and closing frame 13 through the thrust bearing sleeved on the mold frame shaft 1, and the connecting section 10 on the adjusting sleeve 4 is screwed into the internal threaded hole 6 on the gasket 3, and the pressure seam 7 becomes smaller under the pressure of the pressing bolt 8, thereby preventing the adjusting sleeve 4 from loosening by destroying the thread in the internal threaded hole 6, and the Haver block 5 is locked to the top of the cylindrical section 14 of the mold frame shaft 1, and an adjustment gap 16 is left between the Haver block 5 and the upper limit boss 2, and a gasket is tightly plugged in the adjusting gap 16, and the Haver block 5 presses and limits the mold opening and closing frame 13 through the thrust bearing sleeved on the mold frame shaft 1.

[0017] A method for adjusting and fixing a height adjustment mechanism of a blow molding machine mold, the method steps are as follows: (1) If Figure 1As shown, the connecting section 10 on the adjusting sleeve 4 is screwed into the internal threaded hole 6 on the cushion block 3, so that the adjusting sleeve 4 and the cushion block 3 are threadedly connected. At this time, the lower end of the adjusting sleeve 4 does not extend out of the lower end of the cushion block 3, and the adjusting sleeve 4 does not block the pressing bolt 8 on the cushion block 3, so that the pressing bolt 8 can be screwed. Then, the connected adjusting sleeve 4 and cushion block 3 are sleeved on the bottom of the cylindrical section 14 of the mold frame shaft 1, and the lower end of the cushion block 3 abuts against the mold frame bracket 12, and the adjusting sleeve 4 and the mold frame bracket 12 are connected. A thrust bearing is mounted on the mold frame shaft 1 between the mold opening and closing frames 13, and the adjustment sleeve 4 supports the mold opening and closing frames 13 through the thrust bearing. The Haver block 5 is locked to the top of the cylindrical section 14 of the mold frame shaft 1. An adjustment gap 16 is left between the Haver block 5 and the upper limit boss 2. A thrust bearing is also mounted on the mold frame shaft 1 between the Haver block 5 and the mold opening and closing frames 13. The Haver block 5 performs an upper limit on the mold opening and closing frames 13 through the thrust bearing, so that the mold opening and closing frames 13 cannot move upward; (2) When adjusting the height of the bottle blowing mold, loosen the connection between the mold opening and closing frame 13 and the mold frame bracket 12 and the Havers block 5, so that the mold opening and closing frame 13 can move up and down, then insert the rod into the rotating hole 11 to drive the adjustment sleeve 4 to rotate forward, so that the adjustment sleeve 4 is raised until the mold opening and closing frame 13 is raised to the required height, then rotate the adjustment sleeve 4 in the opposite direction N°, so that the adjustment sleeve 4 moves downward a short distance, and then insert the gasket into the adjustment gap 16 until the gasket can no longer be inserted, then rotate the adjustment sleeve 4 forward N°, so that the mold opening and closing frame 13 is raised to the required height, and each gasket is fully compressed, then tighten the Havers block 5 and tighten the pressing bolt 8 to prevent the adjustment sleeve 4 from loosening and rotating.

[0018] If, after the mold opening and closing frame 13 is raised to the required height, a gasket is directly inserted into the adjustment gap 16 to try to fill the adjustment gap 16, this may result in the adjustment gap 16 not being reliably filled, resulting in the gasket in the adjustment gap 16 being relatively loose, and thus being unable to reliably resist the Haver block 5. After the mold opening and closing frame 13 is raised to the required height, the adjustment sleeve 4 is first rotated N° in the opposite direction, so that the adjustment sleeve 4 moves downward a short distance, and then the gasket is inserted into the adjustment gap 16, so that 1-2 more gaskets can be inserted, so that after the adjustment sleeve 4 is rotated N° in the forward direction, the gasket in the adjustment gap 16 can be fully compressed, so that it can reliably resist the Haver block 5.

[0019] In this embodiment, N is 20 to 40. If the rotation angle is too small, it will be impossible to insert more gaskets. If the rotation angle is too large, it will be necessary to insert too many gaskets. Too many gaskets will cause the gaskets to loosen easily after being pressed. The thickness specifications of the gaskets are as follows: 0.05mm, 0.1mm, and 0.2mm. If the thickness of the gasket is too thick, the applicability of the gasket will be greatly reduced. Wrench planes are respectively provided on both sides of the gasket. When the drive adjustment sleeve 4 rotates, the wrench can be used to prevent the gasket from rotating.

Claims

1. A blow molding machine mold height adjustment mechanism, comprising: A mold frame shaft, a mold frame bracket, and a mold opening and closing frame for installing a bottle blowing mold are characterized in that they also include: an upper limit boss, a cushion block, an adjustment sleeve, a Havers block, and a plurality of gaskets arranged on the top of the cylindrical section of the mold frame shaft, a vertically arranged internal threaded hole is arranged in the middle of the cushion block, a pressure seam extending into the internal threaded hole is arranged on the side wall of the cushion block, a pressing bolt is arranged on the upper surface of the cushion block, and the pressing bolt passes downward through the pressure seam and is threadedly connected to the cushion block; the adjustment sleeve is formed by axially connecting a rotating section and a connecting section, the rotating section is located above the connecting section, and an external thread is arranged on the outer side of the connecting section; a gasket is provided with a gasket that can make the gasket clamp on the mold frame The avoidance gap on the cylindrical section of the shaft; the adjusting sleeve and the cushion block are mounted on the bottom of the cylindrical section of the mold frame shaft, the lower end of the cushion block is against the mold frame bracket, the adjusting sleeve supports the mold opening and closing frame through the thrust bearing mounted on the mold frame shaft, the connecting section on the adjusting sleeve is screwed into the internal threaded hole on the cushion block, the pressure seam becomes smaller under the pressure of the pressing bolt, thereby preventing the adjusting sleeve from loosening by destroying the thread in the internal threaded hole, the Haver block is locked to the top of the cylindrical section of the mold frame shaft, an adjustment gap is left between the Haver block and the upper limit boss, the sleeve in the adjustment gap is tightly plugged with a gasket, and the Haver block presses and limits the mold opening and closing frame through the thrust bearing mounted on the mold frame shaft.

2. A blow molding machine mold height adjustment mechanism according to claim 1, characterized in that: A rotating hole for driving the adjusting sleeve to rotate is arranged on the rotating section.

3. A blow molding machine mold height adjustment mechanism according to claim 1 or 2, characterized in that: The thickness specifications of the gasket are as follows: 0.05mm, 0.1mm, 0.2mm.

4. A blow molding machine mold height adjustment mechanism according to claim 1 or 2, characterized in that: Wrench flat surfaces are respectively arranged on both sides of the cushion block.

5. The method for adjusting and fixing the height adjustment mechanism of a blow molding machine mold according to claim 1 or 2, characterized in that: The steps are as follows: (1) The connecting section on the adjusting sleeve is screwed into the internal threaded hole on the cushion block, so that the adjusting sleeve and the cushion block are threadedly connected. At this time, the lower end of the adjusting sleeve does not extend out of the lower end of the cushion block, and the adjusting sleeve does not block the pressing bolt on the cushion block, so that the pressing bolt can be screwed. Then the connected adjusting sleeve and cushion block are mounted on the bottom of the cylindrical section of the mold frame shaft, and the lower end of the cushion block is abutted against the mold frame bracket. A thrust bearing is mounted on the mold frame shaft between the adjusting sleeve and the mold opening and closing frame. The adjusting sleeve supports the mold opening and closing frame through the thrust bearing. The Haver block is locked to the top of the cylindrical section of the mold frame shaft. An adjustment gap is left between the Haver block and the upper limit boss. A thrust bearing is also mounted on the mold frame shaft between the Haver block and the mold opening and closing frame. The Haver block performs an upper limit on the mold opening and closing frame through the thrust bearing, so that the mold opening and closing frame cannot move upward. (2) When adjusting the height of the blow molding mold, loosen the connection between the mold opening and closing frame and the mold frame bracket and the Havers block so that the mold opening and closing frame can move up and down. Then, drive the adjustment sleeve to rotate forward by external force on the rotating section, so that the adjustment sleeve rises until the mold opening and closing frame is raised to the required height. Then, rotate the adjustment sleeve in the opposite direction N° so that the adjustment sleeve moves downward a short distance. Then, insert the gasket into the adjustment gap until the gasket can no longer be inserted. Then, rotate the adjustment sleeve forward N° so that the mold opening and closing frame is raised to the required height and each gasket is fully compressed. Then, tighten the Havers block and tighten the pressing bolt to prevent the adjustment sleeve from loosening and rotating.

6. The method for adjusting and fixing the height adjustment mechanism of a blow molding machine mold according to claim 5, characterized in that: N is 20 to 40.

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