A clamping mechanism for bottle blowing machine

Abstract

The present invention discloses a mold locking mechanism for a bottle blowing machine, comprising a mold frame support, a left mold frame and a right mold frame respectively rotatable around a first axis and arranged on the mold frame support, a driving assembly arranged on the mold frame support and used for driving mold opening and closing, a left fastener arranged on the left mold frame, a right fastener rotatable around a second axis and arranged on the right mold frame, a movable mold locking member arranged on the right fastener, and a locking assembly used for locking the mold locking member on the right fastener; when the left mold frame and the right mold frame are in a mold closing position, the left fastener and the right fastener are interlocked with each other; the mold locking member is used to hook against or disengage from the left fastener when moving relative to the right fastener; the driving assembly is used to drive the right fastener to rotate relative to the right mold frame away from the left fastener when opening the mold, and is also used to drive the right fastener to rotate relative to the right mold frame close to the left fastener when closing the mold. The present invention discloses a mold locking mechanism for a bottle blowing machine, which can take out bottles at a relatively small mold opening angle, has a relatively small mold frame rotation angle, and has good dynamic characteristics.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing, in particular to a mold locking mechanism of a bottle blowing machine. Background Art

[0002] The existing bottle blowing machine clamping mechanism generally has the following two structures:

[0003] One is to overlap the front ends of the left and right molds, insert the pin on one mold into the hole on the other mold to lock the two molds; or rotate the shaft on one mold into the groove on the other mold to lock the two molds. Disadvantages: 1. There are many overlaps between the front ends of the left and right molds, and the mold must be opened at a larger angle to take out the bottle; 2. The mold has a large rotation angle and poor dynamic characteristics; 3. The mold closing acceleration is large, the noise is large, and the impact is large, which affects the speed and efficiency of the bottle blowing machine.

[0004] The other method is to rotate the gusset plate on one side of the mold and buckle it in the gusset plate on the other side of the mold to lock the two molds. Disadvantages: 1. There should be a gap at the gusset plate overlap, and the gusset plate should be wedged tightly by a strong spring restoring torque, which has high design requirements; 2. The gusset plate rotates and overlaps, and the surface requirements at the overlap are high. When the mold is filled with high-pressure gas to blow the bottle, there is a risk of the gusset plate bursting due to mold expansion. Summary of the invention

[0005] The purpose of the present invention is to provide a mold locking mechanism for a bottle blowing machine, which can link the right fastener to rotate relative to the right mold frame and away from the left fastener when the mold is opened through a driving component. For bottles with the same diameter, a smaller mold opening angle can be used to take them out; the mold frame rotation angle is smaller and the dynamic characteristics are better.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A mold clamping mechanism for a bottle blowing machine, comprising a mold frame support, a left mold frame and a right mold frame respectively rotatable around a first axis and arranged on the mold frame support, a driving assembly arranged on the mold frame support and used to drive the left mold frame and the right mold frame to open and close relative to each other, the mold clamping mechanism further comprising a left fastener arranged on the left mold frame, a right fastener rotatable around a second axis and arranged on the right mold frame, a mold clamping member movably arranged on the right fastener, and a locking assembly used to lock the mold clamping member on the right fastener;

[0008] When the left mold frame and the right mold frame are in the mold closing position, the left fastener and the right fastener are engaged with each other; the mold locking member is used to hook against or disengage from the left fastener when moving relative to the right fastener;

[0009] The driving assembly is used to drive the right fastener to rotate relative to the right mold frame and away from the left fastener when the mold is opened, and is also used to drive the right fastener to rotate relative to the right mold frame and closer to the left fastener when the mold is closed.

[0010] Preferably, the first axis and the second axis are parallel to each other and both extend in the vertical direction.

[0011] Preferably, the driving assembly includes a first swing arm arranged on the mold frame bracket and rotatable around a third axis, a left mold connecting rod whose two ends are respectively rotatably connected to the first swing arm and the left mold frame, a right mold connecting rod whose two ends are respectively rotatably connected to the first swing arm and the right mold frame, and a fastener connecting rod whose two ends are respectively rotatably connected to the first swing arm and the right fastener.

[0012] More preferably, the fastener connecting rod is arc-shaped and is arranged around the outer side of the right mold frame.

[0013] More preferably, the locking mechanism also includes a first rotating shaft which is arranged on the mold frame support and can rotate around the third axis and is used to connect the first swing arm, a second swing arm which is arranged on the first rotating shaft, and a first rotor which is arranged on the second swing arm and can rotate around the fourth axis and is used to be driven to roll by the first cam.

[0014] More preferably, the first axis, the second axis, the third axis, and the fourth axis are parallel to each other and extend in a vertical direction.

[0015] Preferably, the locking mold member is a second rotating shaft disposed in the right buckle and rotatable around a fifth axis, the left buckle is provided with an arcuate groove, and the second rotating shaft is provided with an arcuate notch having the same shape as the arcuate groove;

[0016] When the arcuate notch is partially located in the arcuate groove, the locking mold component and the left fastener are hooked against each other; when the arcuate notch is completely located in the arcuate groove, the locking mold component and the left fastener are disengaged from each other.

[0017] More preferably, the locking assembly comprises a positioning member provided on the second rotating shaft, a torsion spring sleeved on the second rotating shaft and having two ends respectively used to press against the positioning member and the right buckle, and a limiting member provided on the right buckle;

[0018] The torsion spring is used to rotate the positioning member through elastic restoring force so that the positioning member is pressed against the limiting member.

[0019] More preferably, the mold locking mechanism further comprises a third swing arm disposed on the second rotating shaft, and a second rotor disposed on the third swing arm and rotatable around a sixth axis and configured to be driven to roll by the second cam.

[0020] More preferably, the first axis, the second axis, the fifth axis, and the sixth axis are parallel to each other and extend in the vertical direction.

[0021] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention provides a mold locking mechanism for a bottle blowing machine, which, through a driving assembly, links the right fastener to rotate relative to the right mold frame away from the left fastener when the mold is opened. The front end of the mold is basically unobstructed when the mold is opened. For bottles with the same diameter, a smaller mold opening angle can be taken out, and at the same time, a driving device for driving the right fastener to rotate alone is saved; since the rotation angles of the left mold frame and the right mold frame are small, the dynamic characteristics are better; the mold locking member movable in the right fastener is used to achieve mutual hooking with the left fastener, and the mold closing and fitting action of the left fastener and the right fastener is separated from the mold locking action of the left fastener and the mold locking member, which can not only reduce the surface processing requirements of the right fastener, but also reduce the difficulty of the stroke design of the right fastener; when the mold is closed, the mold locking member is locked on the right fastener by the locking assembly, which can avoid the risk of the expansion mold bursting when blowing the bottle; the mold locking mechanism reduces vibration and noise, operates stably and reliably, and is beneficial to speeding up and increasing the efficiency of the bottle blowing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Attached Figure 1 The structure of the clamping mechanism according to a specific embodiment of the present invention is shown in FIG. Figure 1 (Mold opening state);

[0023] Attached Figure 2 The structure of the clamping mechanism according to a specific embodiment of the present invention is shown in FIG. Figure 2 (Mold opening state);

[0024] Attached Figure 3 The structure of the clamping mechanism according to a specific embodiment of the present invention is shown in FIG. Figure 3 (Mold closing state and mold locking);

[0025] Attached Figure 4 The structure of the clamping mechanism according to a specific embodiment of the present invention is shown in FIG. Figure 4 (Mold closing state and unlocking);

[0026] Attached Figure 5 A cross-sectional view of a clamping mechanism according to a specific embodiment of the present invention Figure 1 (Mold opening state);

[0027] Attached Figure 6 A cross-sectional view of a clamping mechanism according to a specific embodiment of the present invention Figure 2 (Mold closing state and mold locking);

[0028] Attached Figure 7 A cross-sectional view of a clamping mechanism according to a specific embodiment of the present invention Figure 3 (Mold closed and unlocked).

[0029] Wherein: 1. mold frame bracket; 2. left mold frame; 3. right mold frame; 4. left fastener; 41. arched groove; 5. right fastener; 6. first swing arm; 7. left mold connecting rod; 8. right mold connecting rod; 9. fastener connecting rod; 10. first rotating shaft; 11. second swing arm; 12. first rotor; 13. second rotating shaft; 131. positioning member; 14. torsion spring; 15. limit member; 16. third swing arm; 17. second rotor. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with specific embodiments and drawings.

[0031] See also Figure 1-7 As shown, this embodiment provides a mold clamping mechanism for a bottle blowing machine, comprising a mold frame support 1, a left mold frame 2 and a right mold frame 3 arranged on the mold frame support 1 and capable of rotating around a first axis, and a driving assembly arranged on the mold frame support 1 and used for driving the left mold frame 2 and the right mold frame 3 to open and close relative to each other. In this embodiment, the first axis extends in the vertical direction.

[0032] See also Figure 1 , 2 As shown in FIG. 5 , the left mold frame 2 and the right mold frame 3 are relatively open, which is the mold opening state; see FIG. Figure 3-4 As shown in 6-7, the left mold frame 2 and the right mold frame 3 are relatively closed and are in a mold closing state.

[0033] See also Figure 1 As shown, the driving assembly comprises a first rotating shaft 10 arranged on the mold frame support 1 and rotatable around a third axis, a first swing arm 6 and a second swing arm 11 connected to the first rotating shaft 10, a left mold connecting rod 7 whose two ends are respectively rotatably connected to the first swing arm 6 and the left mold frame 2, a right mold connecting rod 8 whose two ends are respectively rotatably connected to the first swing arm 6 and the right mold frame 3, and a first rotor 12 arranged on the second swing arm 11 and rotatable around a fourth axis and driven to roll by a first cam (not shown in the figure). In this embodiment, the third axis and the fourth axis extend in the vertical direction respectively, the left mold connecting rod 7 and the right mold connecting rod 8 extend in the horizontal direction respectively, the rotation axis at both ends of the left mold connecting rod 7 and the rotation axis at both ends of the right mold connecting rod 8 extend in the vertical direction respectively, and the rotation axis of the left mold connecting rod 7 on the first swing arm 6 and the rotation axis of the right mold connecting rod 8 on the first swing arm 6 coincide with each other.

[0034] Through this arrangement, when the first cam drives the first rotor 12 to roll on the cam curve, the second swing arm 11 drives the first rotating shaft 10 to rotate around the third axis, thereby driving the first swing arm 6 to rotate around the third axis synchronously. Figure 6 In the embodiment, when the first swing arm 6 swings clockwise, the left mold frame 2 and the right mold frame 3 are driven to open relatively through the left mold connecting rod 7 and the right mold connecting rod 8 respectively; Figure 5 When the first swing arm 6 swings counterclockwise, the left mold frame 2 and the right mold frame 3 are driven to close relative to each other through the left mold connecting rod 7 and the right mold connecting rod 8 respectively.

[0035] The above-mentioned mold clamping mechanism of the bottle blowing machine also includes a left fastener 4 arranged on the left mold frame 2, a right fastener 5 arranged on the right mold frame 3 and rotatable around the second axis, a mold clamping member movably arranged on the right fastener 5, and a locking assembly for locking the mold clamping member on the right fastener 5. In this embodiment, the second axis extends in the vertical direction.

[0036] The structures of the left fastener 4 and the right fastener 5 are as follows: Figure 1 As shown, it is the prior art and will not be described in detail here. Figure 3-4 As shown, when the left mold frame 2 and the right mold frame 3 are in the mold closing position, the left fastener 4 and the right fastener 5 are engaged with each other; see Figure 1-2 As shown, when the left mold frame 2 and the right mold frame 3 are in the mold opening position, the left fastener 4 and the right fastener 5 are disengaged from each other.

[0037] The locking mold member is used to hook or disengage with the left fastener 4 when moving relative to the right fastener 5. In this embodiment, the locking mold member is a second rotating shaft 13 disposed in the right fastener 5 and rotatable around the fifth axis, the left fastener 4 is provided with an arcuate groove 41, and the second rotating shaft 13 is provided with an arcuate notch having the same shape as the arcuate groove 41. The fifth axis extends in the vertical direction.

[0038] See also Figure 6 As shown, it is the clamping position in the mold closing state. When the arcuate notch is located in the arcuate groove 41, the clamping member and the left fastener 4 are hooked against each other and cannot be disengaged from each other; see Figure 7 As shown, it is the unlocking position in the mold closing state. When the arcuate notch is completely located in the arcuate groove 41, the mold locking part and the left fastener 4 can be disengaged from each other.

[0039] The driving assembly is used to drive the right fastener 5 to rotate relative to the right mold frame 3 away from the left fastener 4 when the mold is opened, and is also used to drive the right fastener 5 to rotate relative to the right mold frame 3 towards the left fastener 4 when the mold is closed. Through this arrangement, for bottles with the same diameter, a smaller mold opening angle can be taken out; the mold frame rotation angle is smaller, and the dynamic characteristics are better.

[0040] See also Figure 2 As shown, in this embodiment, the driving assembly further comprises a fastener connecting rod 9 whose two ends are respectively connected to the first swing arm 6 and the right fastener 5 for rotation. The fastener connecting rod 9 is arc-shaped and is arranged around the outside of the right mold frame 3. The fastener connecting rod 9 is parallel to the horizontal plane, and the rotation axis lines at both ends extend in the vertical direction respectively.

[0041] See also Figure 6As shown, the third axis is located on the right side of the mold center line AA, the rotation axis of the fastener link 9 on the first swing arm 6 is located on the left side of the mold center line AA, the rotation axis of the left mold link 7 and the right mold link 8 on the first swing arm 6 are aligned with the mold center line AA, and the first axis is aligned with the mold center line AA.

[0042] Figure 7 to Figure 5 To close the mold and open the mold, when the driving assembly drives the mold to open, the right fastener 5 is synchronously driven by the fastener connecting rod 9 to rotate relative to the right mold frame 3 away from the left mold frame 2; Figures 5 to 7 To open the mold and close the mold, when the driving assembly drives the mold to close the mold, the right fastener 5 is synchronously driven by the fastener connecting rod 9 to rotate relative to the right mold frame 3 and approach the left mold frame 2.

[0043] The locking assembly comprises a positioning member 131 disposed on the second rotating shaft 13 , a torsion spring 14 sleeved on the second rotating shaft 13 and having two ends respectively used to press against the positioning member 131 and the right buckle 5 , and a limiting member 15 disposed on the right buckle 5 .

[0044] See also Figure 2 , 3 As shown, in this embodiment, the positioning member 131 is disposed below the second rotating shaft 13, and the limiting member 15 is disposed below the right fastener 5, and the two are at the same height. The torsion spring 14 drives the positioning member 131 to drive the second rotating shaft 13 to rotate relative to the right fastener 5 through its own elastic restoring force, until the positioning member 131 rotates to abut against the limiting member 15, at which time the second rotating shaft 13 no longer rotates and is relatively stationary with the right fastener 5, thereby achieving mold locking.

[0045] The above-mentioned bottle blowing machine clamping mechanism further includes a third swing arm 16 disposed on the second rotating shaft 13, and a second rotor 17 disposed on the third swing arm 16 and rotatable about a sixth axis and driven to roll by a second cam (not shown in the figure). In this embodiment, the sixth axis extends in the vertical direction.

[0046] Through this arrangement, when the second cam drives the second rotor 17 to roll on the cam curve, the second rotating shaft 13 rotates around the fifth axis to switch between being hooked with and disengaged from the left fastener 4.

[0047] When opening the mold, the second cam drives the second rotor 17 to roll, so that the second rotating shaft 13 rotates synchronously and is disengaged and unlocked from the left fastener 4; then the first cam drives the first rotor 12 to roll, and the first swing arm 6 drives the left mold frame 2 and the right mold frame 3 to open relatively, and at the same time, the first swing arm 6 drives the right fastener 5 to be disengaged from the left fastener 4 (before disengagement, the second rotating shaft 13 remains stationary relative to the right fastener 5), and moves away from the left mold frame 2 relative to the right mold frame 3, so as to finally realize the mold opening;

[0048] When closing the mold, the first cam drives the first rotor 12 to roll, the first swing arm 6 drives the left mold frame 2 and the right mold frame 3 to close relative to each other, and at the same time the first swing arm 6 drives the right fastener 5 to be close to the left mold frame 2 relative to the right mold frame 3. When the left fastener 4 and the right fastener 5 are engaged with each other (if the position of the second rotating shaft 13 interferes with the mutual engagement of the left fastener 4 and the right fastener 5 before they are engaged, the second rotating shaft 13 is driven to rotate by the second cam for correction), the second rotating shaft 13 is reset under the elastic restoring force of the torsion spring 14, and hooks with the left fastener 4 to lock the mold.

[0049] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold clamping mechanism for a bottle blowing machine, comprising a mold frame support, a left mold frame and a right mold frame respectively rotatable around a first axis and arranged on the mold frame support, and a driving assembly arranged on the mold frame support and used to drive the left mold frame and the right mold frame to open and close relative to each other, characterized in that: The mold locking mechanism further comprises a left fastener disposed on the left mold frame, a right fastener disposed on the right mold frame and rotatable about a second axis, a mold locking member movably disposed on the right fastener, and a locking assembly for locking the mold locking member on the right fastener; When the left mold frame and the right mold frame are in the mold closing position, the left fastener and the right fastener are engaged with each other; the mold locking member is used to hook against or disengage from the left fastener when moving relative to the right fastener; the driving assembly is used to drive the right fastener to rotate relative to the right mold frame away from the left fastener when opening the mold, and is also used to drive the right fastener to rotate relative to the right mold frame to approach the left fastener when closing the mold; The first axis and the second axis are parallel to each other and extend in the vertical direction; The driving assembly includes a first swing arm rotatable around a third axis and arranged on the mold frame bracket, a left mold connecting rod with two ends respectively connected to the first swing arm and the left mold frame for rotation, a right mold connecting rod with two ends respectively connected to the first swing arm and the right mold frame for rotation, and a fastener connecting rod with two ends respectively connected to the first swing arm and the right fastener for rotation.

2. A mold clamping mechanism for a bottle blowing machine according to claim 1, characterized in that: The fastener connecting rod is arc-shaped and is arranged around the outer side of the right mold frame.

3. The clamping mechanism of a bottle blowing machine according to claim 1, characterized in that: The locking mechanism also includes a first rotating shaft which is arranged on the mold frame support and can rotate around the third axis and is used to connect the first swing arm, a second swing arm which is arranged on the first rotating shaft, and a first rotor which is arranged on the second swing arm and can rotate around the fourth axis and is used to be driven to roll by the first cam.

4. A mold clamping mechanism for a bottle blowing machine according to claim 3, characterized in that: The first axis, the second axis, the third axis, and the fourth axis are parallel to each other and extend in a vertical direction.

5. The clamping mechanism of a bottle blowing machine according to claim 1, characterized in that: The locking mold part is a second rotating shaft arranged in the right buckle and rotatable around a fifth axis, the left buckle is provided with an arcuate groove, and the second rotating shaft is provided with an arcuate notch having the same shape as the arcuate groove; When the arcuate notch is partially located in the arcuate groove, the locking mold component and the left fastener are hooked against each other; when the arcuate notch is completely located in the arcuate groove, the locking mold component and the left fastener are disengaged from each other.

6. A mold clamping mechanism for a bottle blowing machine according to claim 5, characterized in that: The locking assembly includes a positioning member arranged on the second rotating shaft, a torsion spring sleeved on the second rotating shaft and having two ends respectively used to press against the positioning member and the right buckle, and a limiting member arranged on the right buckle; The torsion spring is used to rotate the positioning member through elastic restoring force so that the positioning member is pressed against the limiting member.

7. The clamping mechanism of a bottle blowing machine according to claim 5, characterized in that: The mold locking mechanism also includes a third swing arm arranged on the second rotating shaft, and a second rotor arranged on the third swing arm and rotatable around a sixth axis and used to be driven to roll by the second cam.

8. The clamping mechanism of a bottle blowing machine according to claim 7, characterized in that: The first axis, the second axis, the fifth axis, and the sixth axis are parallel to each other and extend in a vertical direction.

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