A single-motor double-cam blow molding machine clamping device

Abstract

The present invention discloses a mold clamping device for a single-motor double-cam blow molding machine, which includes a swing frame base, a first mold clamping plate, a second mold clamping plate, a mold opening and closing assembly, and a hooking mechanism; the hooking mechanism includes a first cam and a locking part, the mold opening and closing assembly includes a driving main shaft, a mold clamping connecting rod, and a mold clamping pull rod, the first cam is connected to the driving main shaft, a second cam is provided at the shaft end of the driving main shaft, the second cam is eccentrically arranged with respect to the axis of the driving main shaft, the second cam is rotatably connected to one end of the mold clamping connecting rod, the mold clamping connecting rod is hinged to the mold clamping pull rod, the mold clamping pull rod cooperates with the second mold clamping plate, and the locking part is arranged on the mold clamping connecting rod. By driving the swing of the mold clamping connecting rod by the driving main shaft, rapid mold opening and closing and high-pressure mold clamping can be achieved, and rapid mold opening and closing can be realized with relatively small power; during mold clamping, the first cam is disengaged from the locking part, so that the eccentric rotation of the driving main shaft driving the second cam locks the mold clamping connecting rod, and relatively small motor working power can be retained to achieve pressurized mold clamping.

Description

Technical Field

[0001] The present invention relates to the field of mold clamping devices, and particularly to a mold clamping device for a single-motor double-cam blow molding machine. Background Art

[0002] The mold closing and clamping device is an important component of an extrusion blow molding hollow forming machine, mainly used to realize the opening and closing of the mold and high-pressure mold clamping. Currently, the common mold closing and clamping devices on the market usually use two power sources to complete the mold opening and closing and mold clamping actions respectively, resulting in complex actions of the whole machine, and directly outputting the mold clamping force to the mold clamping plate is also likely to cause deformation of the mold clamping plate. In addition, to meet the requirements of mold opening and closing speed and mold clamping force size, etc., the existing mold clamping devices usually use a more powerful power source, which will lead to an increase in production energy consumption. Summary of the Invention

[0003] The purpose of the present invention is to provide a mold clamping device for a single-motor double-cam blow molding machine to solve one or more technical problems existing in the above background art.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A mold clamping device for a single-motor double-cam blow molding machine includes a swing frame base, a first mold clamping plate, a second mold clamping plate, a mold opening and closing assembly, and a hooking mechanism; the first mold clamping plate and the second mold clamping plate are slidably arranged front and back on the swing frame base;

[0006] The hooking mechanism includes a first cam and a locking part, the mold opening and closing assembly includes a driving main shaft, a mold clamping connecting rod, and a mold clamping pull rod, the first cam is connected to the driving main shaft, a second cam is provided at the shaft end of the driving main shaft, the second cam is eccentrically arranged with respect to the axis of the driving main shaft, one end of the second cam is rotatably connected to the mold clamping connecting rod, the other end of the mold clamping connecting rod is hinged to one end of the mold clamping pull rod, the other end of the mold clamping pull rod is slidably matched with the second mold clamping plate, and the locking part is arranged on the mold clamping connecting rod;

[0007] During mold closing, the first cam is latched with the locking part, the driving main shaft drives the mold clamping connecting rod to swing upward in a direction away from the second mold clamping plate, the mold clamping pull rod pulls the second mold clamping plate to move towards the center until the mold clamping connecting rod swings to the upper limit position, at this time the distance between the first mold clamping plate and the second mold clamping plate is the smallest, and the mold clamping pull rod is horizontal and at the highest position;

[0008] During mold clamping, the driving main shaft continues to rotate, driving the first cam to separate from the locking part, and at the same time the second cam drives one end of the mold clamping connecting rod to move eccentrically, applying a mold clamping force to the mold clamping connecting rod through the eccentricity of the second cam to complete pressurized mold clamping;

[0009] After the mold clamping is completed, the driving main shaft rotates to drive the first cam to engage and lock with the lock fastener again. The driving main shaft continues to rotate to drive the mold clamping connecting rod to swing downward in the direction close to the second mold plate. The mold clamping pull rod pushes the second mold plate to move outward until the mold clamping connecting rod swings to the lower limit position. At this time, the distance between the first mold plate and the second mold plate is the largest, and the mold clamping pull rod is horizontal and at the lowest position.

[0010] Preferably, the hook mechanism further includes an adjusting structure. A lock groove is provided on one side of the lock fastener, and a lock block matching the lock groove is provided at the top of the first cam. The lock fastener keeps the lock groove engaged with the lock block under the action of the adjusting structure.

[0011] Preferably, when the first cam engages with the lock fastener, the center line of the lock block is lower than the center line of the lock groove. A notch is provided on one side of the lock fastener, and the lock groove is provided in the notch.

[0012] Preferably, the first cam is key-connected to the driving main shaft, and the outer side of the second cam is connected to the mold clamping connecting rod through a bearing.

[0013] Preferably, an upper limit structure is further included. The upper limit structure is provided above the mold clamping connecting rod; the upper limit structure includes a limit pin, and the limit pin is vertically provided on the mold plate and is located on the swing track of the mold clamping connecting rod.

[0014] Preferably, the adjusting structure includes a tension spring and an adjusting plate. One end of the tension spring and the adjusting plate are arranged left and right on the mold clamping connecting rod. A first connecting arm and a second connecting arm are arranged left and right on one side of the lock fastener. The first connecting arm is connected to the other end of the tension spring, and a pulley is provided on the second connecting arm. The pulley is in contact with the adjusting plate; the adjusting structure further includes an adjusting screw and a limit top plate. The limit top plate is provided on the mold clamping connecting rod, the adjusting screw is threadedly connected to the first connecting arm, and the end of the adjusting screw abuts against the limit top plate.

[0015] Preferably, the mold opening and closing assembly further includes a gear-rack component, a lifting component, and a lifting bracket. The lifting component is on the second mold plate. The gear-rack component includes a fixed rack and a movable gear that mesh with each other. The fixed rack is arranged parallel to the swing frame base. The movable gear is rotatably connected to the second mold plate, and the movable gear is connected to the input end of the lifting component. The lifting bracket is connected to the lifting end of the lifting component.

[0016] Preferably, the gear-rack component further includes a template servo motor which is arranged on the second toggle plate, and the rotating shaft end of the template servo motor is connected to the movable gear.

[0017] Preferably, the lifting component includes a first lifting pulley, a second lifting pulley and a synchronous belt. The first lifting pulley and the second lifting pulley are arranged up and down on one side of the second toggle plate. The synchronous belt meshes with the first lifting pulley and the second lifting pulley. The second lifting pulley is coaxially connected to the movable gear, and the synchronous belt is connected to the lifting bracket.

[0018] Preferably, the length of the toggle tie-bar is adjustable.

[0019] The beneficial effects of the present invention are as follows: By driving the main shaft to drive the swing of the toggle link, rapid mold opening and closing as well as high-pressure mold clamping can be achieved. The rapid mold opening and closing is realized by using a smaller power, and the energy consumption of the mold opening and closing action is low;

[0020] During mold clamping, the first cam disengages from the lock fastener, so that the driving main shaft drives the eccentric rotation of the second cam to lock the toggle link, so that a smaller motor working power can be retained during the mold clamping process to achieve pressurized mold clamping;

[0021] Both ends of the toggle tie-bar are respectively connected to the first toggle plate and the second toggle plate. After mold closing, the toggle tie-bar is in a horizontal state, so that during the mold clamping process, the toggle tie-bar and the clamping force are on the same horizontal plane, which not only ensures the generation of sufficient clamping force, but also avoids the deformation of the toggle plate; When the mold opening is at the maximum, the toggle tie-bar is horizontal and located at the lowest position, which is convenient for replacing the mold. Description of the Drawings

[0022] The drawings further illustrate the present invention, but the content in the drawings does not constitute any limitation to the present invention.

[0023] Figure 1 is the schematic diagram of the overall structure of one embodiment of the present invention;

[0024] Figure 2 is the schematic diagram of the hook mechanism of one embodiment of the present invention;

[0025] Figure 3 (a) is the schematic diagram of the positions of the first cam and the second cam during mold closing of one embodiment of the present invention;

[0026] Figure 3 (b) is the schematic diagram of the positions of the first cam and the second cam during mold clamping of one embodiment of the present invention;

[0027] Figure 4 is the schematic diagram of the engagement of the lock block and the lock fastener of one embodiment of the present invention;

[0028] Figure 5 Schematic diagram of the installation position of the adjusting plate in one embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the installation position of the tension spring in one embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the structure of the locking component in one embodiment of the present invention.

[0031] Wherein: swing frame base 1, first locking template 2, second locking template 3, first cam 41, locking component 42, driving main shaft 21, locking die connecting rod 43, second cam 44, locking die pull rod 51, locking groove 421, locking block 411, notch 422, limit pin 5, tension spring 61, adjusting plate 62, first connecting arm 63, second connecting arm 64, pulley 65, adjusting screw 66, limit top plate 67, gear rack component 31, lifting component 32, lifting bracket 33, first lifting belt pulley 321, synchronous belt 322, electronic scale 7, synchronous motion component 8, servo drive motor 22, speed reducer 23. Detailed implementation manners

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0033] A single-motor double-cam bottle blowing machine locking die device in this embodiment, referring to the attached Figure 1 and 2 , includes a swing frame base 1, a first locking template 2, a second locking template 3, a mold opening and closing assembly, and a hooking mechanism; the first locking template 2 and the second locking template 3 are slidably arranged back and forth on the swing frame base 1;

[0034] The hooking mechanism includes a first cam 41 and a locking component 42, and the mold opening and closing assembly includes a driving main shaft 21, a locking die connecting rod 43, and a locking die pull rod 51. The first cam 41 is connected to the driving main shaft 21. A second cam 44 is provided at the shaft end of the driving main shaft 21. The second cam 44 is eccentrically arranged with respect to the axis of the driving main shaft 21. The second cam 44 is rotatably connected to one end of the locking die connecting rod 43. The other end of the locking die connecting rod 43 is hinged to one end of the locking die pull rod 51. The other end of the locking die pull rod 51 is slidably matched with the second locking template 3. The locking component 42 is arranged on the locking die connecting rod 43;

[0035] During mold closing, the first cam 41 is latched with the locking component 42. The driving main shaft 21 drives the locking die connecting rod 43 to swing upward in a direction away from the second locking template 3. The locking die pull rod 51 pulls the second locking template 3 towards the center until the locking die connecting rod 43 swings to the upper limit position. At this time, the distance between the first locking template 2 and the second locking template 3 is the smallest, and the locking die pull rod 51 is horizontal and at the highest position;

[0036] During mode locking, the driving main shaft 21 continues to rotate, driving the first cam 41 to separate from the locking member 42. At the same time, the second cam 44 drives one end of the toggle link 43 to move eccentrically. Refer to Appendices Figure 3 (a) and 3(b), during the mode-locking process, the center point A of the driving main shaft 21 remains unchanged, while the center locus of the second cam 44 moves from point B to point B'. Therefore, a mode-locking force is applied to the toggle link 43 through the eccentricity of the second cam 44 to complete the pressurized mode locking;

[0037] After mode locking, the driving main shaft 21 rotates back to drive the first cam 41 to engage and lock with the locking member 42 again. The driving main shaft 21 continues to rotate back to drive the toggle link 43 to swing downward in the direction close to the second die plate 3. The toggle rod 51 pushes the second die plate 3 to move outward until the toggle link 43 swings to the lower limit position. At this time, the distance between the first die plate 2 and the second die plate 3 is the largest, and the toggle rod 51 is horizontal and located at the lowest point.

[0038] By driving the swing of the toggle link 43 by the driving main shaft 21, rapid mold opening and closing and high-pressure mode locking can be achieved. The rapid mold opening and closing can be realized with a small power, and the energy consumption of the mold opening and closing action is low;

[0039] During mode locking, the first cam 41 is disengaged from the locking member 42, so that the eccentric rotation of the driving main shaft 21 driving the second cam 44 locks the toggle link 43, so that pressurized mode locking can be achieved by maintaining a small motor working power during the mode-locking process;

[0040] Both ends of the toggle rod 51 are respectively connected to the first die plate 2 and the second die plate 3. After mold closing, the toggle rod 51 is in a horizontal state, so that the toggle rod 51 and the mode-locking force are on the same horizontal plane during the mode-locking process, ensuring the maximum output of the mode-locking force; when the mold opening is the largest, the toggle rod 51 is horizontal and located at the lowest point, which is convenient for replacing the mold.

[0041] Preferably, the hook mechanism further includes an adjustment structure. Refer to Appendices Figures 5 - 7 , a locking groove 421 is provided on one side of the locking member 42, and a locking block 411 matching the locking groove 421 is provided at the top of the first cam 41. The locking member 42 is kept engaged with the locking block 411 under the action of the adjustment structure.

[0042] Further, when the first cam 41 is engaged with the locking member 42, the center line of the locking block 411 is lower than the center line of the locking groove 421. Refer to Appendices Figure 4, taking the moment when the clamping link 43 swings to the horizontal position as an example, the cross-sectional shape of the locking block 411 is circular, the horizontal straight line passing through the center of the locking block 411 is the center line D of the locking block 411, the horizontal straight line C passing through the center of the locking groove 421 is the center line of the locking groove 421, and the center line D of the locking block 411 is lower than the center line C of the locking groove 421, making the engagement between the locking block 411 and the locking groove 421 more compact, ensuring that during the mold opening and closing process, the locking block 411 remains engaged with the locking groove 421.

[0043] One side of the locking member 42 is provided with a notch portion 422, and the locking groove 421 is opened in the notch portion 422. By providing the notch portion 422, the contact area between the locking member 42 and the cam is increased, so that during the mold opening and closing process, the rotation of the driving main shaft 21 can be transmitted to the locking member 42 through the cam to realize the swing of the clamping link 43. When the cam is engaged with the locking member 42, both ends of the notch portion 422 are attached to both ends of the locking block 411, playing a role of left and right limit.

[0044] Preferably, the first cam 41 is key-connected to the driving main shaft 21, and the outer side of the second cam 44 is connected to the clamping link 43 through a bearing. The first cam 41 is connected to the driving main shaft 21 through key connection, while the second cam 44 is movably connected to the locking link through a bearing. Thus, by providing the second cam 44 at the shaft end of the driving main shaft 21, the eccentric movement of the second cam 44 is utilized to complete the mold opening, closing and clamping actions with a single power source.

[0045] Preferably, it further includes an upper limit structure, and the upper limit structure is arranged above the clamping link 43; the upper limit structure includes a limit pin 5, the limit pin 5 is vertically arranged on the clamping template, and the limit pin 5 is located on the swinging track of the clamping link 43. Thus, when the clamping link 43 swings to abut against the limit pin 5, relative movement occurs between the cam and the locking member 42 under the continuous rotation of the driving main shaft 21, so that the locking block 411 is separated from the locking groove 421.

[0046] It further includes a servo drive motor 22 and a speed reducer 23. The speed reducer 23 is arranged on the clamping template. The rotating shaft end of the servo drive motor 22 is connected to the input end of the speed reducer 23, and the output end of the speed reducer 23 is connected to the driving main shaft 21. Thus, the rotation of the driving main shaft 21 is driven by the servo drive motor 22 and the speed reducer 23. Both ends of the locking member 42 are movably connected to the clamping link 43 through bearings.

[0047] Preferably, the adjusting structure includes a tension spring 61 and an adjusting plate 62. One end of the tension spring 61 and the adjusting plate 62 are arranged left and right on the clamping link 43. On one side of the locking part 42, a first connecting arm 63 and a second connecting arm 64 are arranged left and right. The first connecting arm 63 is connected to the other end of the tension spring 61. A pulley 65 is provided on the second connecting arm 64, and the pulley 65 is in contact with the adjusting plate 62, and the height of the adjusting plate 62 is adjustable;

[0048] The adjusting structure further includes an adjusting screw 66 and a limiting top plate 67. The limiting top plate 67 is arranged on the clamping link 43. The adjusting screw 66 is threadedly connected to the first connecting arm 63, and the end of the adjusting screw 66 abuts against the limiting top plate 67. Thus, by making the top of the adjusting screw 66 abut against the limiting top, when adjusting the adjusting screw 66, the elongation of the tension spring 61 can be changed, so that the position of the locking groove 421 is changed, realizing fine adjustment of the position of the locking groove 421.

[0049] Preferably, the mold opening and closing assembly further includes a gear and rack component 31, a lifting component 32 and a lifting bracket 33. The lifting component 32 is on the second mold plate 3. The gear and rack component 31 includes a fixed rack and a movable gear that mesh with each other. The fixed rack is arranged parallel to the swing frame base 1. The movable gear is rotatably connected to the second mold plate 3, and the movable gear is connected to the input end of the lifting component 32. The lifting bracket 33 is connected to the lifting end of the lifting component 32.

[0050] Preferably, the gear and rack component 31 further includes a template servo motor. The template servo motor is arranged on the second mold plate 3, and the rotating shaft end of the template servo motor is connected to the movable gear. The relative movement between the movable gear and the fixed rack can also be driven by the template servo motor. The speed of the template servo motor driving the lifting bracket 33 to move up and down is synchronized according to the movement track of the clamping link 43.

[0051] Preferably, the lifting component 32 includes a first lifting pulley 321, a second lifting pulley and a synchronous belt 322. The first lifting pulley 321 and the second lifting pulley are arranged up and down on one side of the second mold plate 3. The synchronous belt 322 meshes with the first lifting pulley 321 and the second lifting pulley. The second lifting pulley is coaxially connected to the movable gear, and the synchronous belt 322 is connected to the lifting bracket 33. Thus, through the synchronous belt drive method, the relative movement between the movable gear and the fixed rack can drive the rotation of the second lifting pulley, and then drive the lifting of the lifting bracket 33 through the synchronous belt 322, thereby realizing the process of mold opening and closing.

[0052] Preferably, the length of the clamping rod 51 is adjustable. The adjustable length of the clamping rod 51 can be realized by using a telescopic rod or the like. By adjusting the length of the clamping rod 51, the distance between the first mold plate 2 and the second mold plate 3 during mold closing is adjustable, which is suitable for molds of different thicknesses and has strong adaptability to different products.

[0053] An electronic scale 7 is further provided on the swing frame base 1, and the detection end of the electronic scale 7 is connected to the first locking template 2. By connecting the detection end of the electronic scale 7 to the first locking template 2, the position of the first locking template 2 can be obtained in real time, which is convenient for setting the electronic limit for the first locking template 2.

[0054] Preferably, it further includes a synchronous motion component 8, which is used to make the first locking template 2 and the second locking template 3 move synchronously towards or away from each other on the swing frame base 1. The synchronous motion component 8 plays a guiding role in the movement of the first locking template 2 and the second locking template 3. The synchronous motion component 8 includes a first synchronous rack, a second synchronous rack and a synchronous gear. The first synchronous rack and the second synchronous rack are parallel and are respectively arranged on the first locking template 2 and the second locking template 3. The synchronous gear is arranged in the middle of the swing frame base 1. Both the first synchronous magnetic strip and the second synchronous rack are meshed with the synchronous gear. The first synchronous rack and the second synchronous rack are respectively located on the upper and lower sides of the synchronous gear and are both meshed with the synchronous gear, so that the moving distances of the first locking template 2 and the second locking template 3 are the same.

[0055] The working principle of the injection blow molding machine mold locking device of this embodiment is as follows:

[0056] Initially, the first locking template 2 and the second locking template 3 are in the mold opening state, and the first cam 41 and the locking fastener 42 remain engaged. At this time, the distance between the first locking template 2 and the second locking template 3 is the largest, and the mold locking pull rod 51 is horizontal and at the lowest position, which is convenient for loading and unloading the mold;

[0057] When the first locking template 2 and the second locking template 3 are closed, due to the engagement of the first cam 41 and the locking fastener 42, the driving main shaft 21 can drive the mold locking connecting rod 43 to swing upward in a direction away from the second locking template 3. The mold locking pull rod 51 pulls the second locking template 3, and the movement of the second locking template 3 simultaneously drives the relative movement of the movable gear and the fixed rack, so that the other end of the mold locking pull rod 51 moves upward synchronously until the mold locking connecting rod 43 swings to abut against the limit pin 5. At this time, the distance between the first locking template 2 and the second locking template 3 is the smallest, and the mold locking connecting rod 43 cannot continue to swing upward. The mold locking pull rod 51 is horizontal and at the highest position;

[0058] When locking the first locking template 2 and the second locking template 3, the driving main shaft 21 continues to rotate, driving the first cam 41 to separate from the locking fastener 42. At the same time, the second cam 44 drives one end of the mold locking connecting rod 43 to move eccentrically, and a mold locking force is applied to the mold locking connecting rod 43 through the eccentricity of the second cam 44 to complete the pressurized mold locking;

[0059] After the mold locking is completed, the driving spindle 21 rotates to drive the first cam 41 and the locking piece 42 to lock again, and the driving spindle 21 continues to rotate to drive the mold locking connecting rod 43 to swing downward in the direction close to the second locking plate 3, and the mold locking pull rod 51 pushes the second locking plate 3 to move outward until the mold locking connecting rod 43 swings to the lower limit position. At this time, the distance between the first locking plate 2 and the second locking plate 3 is the largest, and the mold locking pull rod 51 is horizontal and located at the lowest point.

[0060] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A mold clamping device for a single-motor double-cam blow molding machine, characterized in that, It includes a swing frame base, a first locking template, a second locking template, a mold opening and closing assembly, and a hooking mechanism; the first locking template and the second locking template are slidably arranged front and back on the swing frame base; The hooking mechanism includes a first cam and a locking part, the mold opening and closing assembly includes a driving main shaft, a mold locking connecting rod and a mold locking pull rod, the first cam is connected to the driving main shaft, a second cam is arranged at the shaft end of the driving main shaft, the second cam is eccentrically arranged with respect to the axis of the driving main shaft, the second cam is rotatably connected to one end of the mold locking connecting rod, the other end of the mold locking connecting rod is hinged to one end of the mold locking pull rod, the other end of the mold locking pull rod is slidably matched with the second locking template, and the locking part is arranged on the mold locking connecting rod; During mold closing, the first cam is latched with the locking part, the driving main shaft drives the mold locking connecting rod to swing upward in a direction away from the second locking template, the mold locking pull rod pulls the second locking template to move towards the center until the mold locking connecting rod swings to the upper limit position, at this time the distance between the first locking template and the second locking template is the smallest, and the mold locking pull rod is horizontal and at the highest position; During mold locking, the driving main shaft continues to rotate, driving the first cam to separate from the locking part, and at the same time the second cam drives one end of the mold locking connecting rod to move eccentrically, and a mold locking force is applied to the mold locking connecting rod through the eccentricity of the second cam to complete pressure mold locking; After the mold locking is completed, the driving main shaft rotates back to drive the first cam to be latched and locked with the locking part again, the driving main shaft continues to rotate back to drive the mold locking connecting rod to swing downward in a direction close to the second locking template, the mold locking pull rod pushes the second locking template to move outwards until the mold locking connecting rod swings to the lower limit position, at this time the distance between the first locking template and the second locking template is the largest, and the mold locking pull rod is horizontal and at the lowest position; The hooking mechanism further includes an adjusting structure, a locking groove is formed on one side of the locking part, a locking block matching the locking groove is arranged at the top of the first cam, and the locking part keeps the locking groove latched with the locking block under the action of the adjusting structure; It further includes an upper limit structure, and the upper limit structure is arranged above the mold locking connecting rod; the upper limit structure includes a limit pin, the limit pin is vertically arranged on the locking template, and the limit pin is located on the swinging track of the mold locking connecting rod.

2. The mold clamping device of a single-motor double-cam blow molding machine according to claim 1, characterized in that, When the first cam is latched with the locking part, the center line of the locking block is lower than the center line of the locking groove, a notch part is formed on one side of the locking part, and the locking groove is formed in the notch part.

3. The mold clamping device of a single-motor double-cam bottle blowing machine according to claim 1, characterized in that, The first cam is key-connected to the driving main shaft, and the outer side of the second cam is connected to the mold locking connecting rod through a bearing.

4. A mold clamping device for a single-motor double-cam bottle blowing machine according to claim 1, characterized in that, The adjusting structure includes a tension spring and an adjusting plate, one end of the tension spring and the adjusting plate are arranged left and right on the mold locking connecting rod, a first connecting arm and a second connecting arm are arranged left and right on one side of the locking part, the first connecting arm is connected to the other end of the tension spring, and a pulley is arranged on the second connecting arm, and the pulley is in contact with the adjusting plate; The adjusting structure further includes an adjusting screw and a limiting top plate. The limiting top plate is arranged on the toggle link. The adjusting screw is threadedly connected to the first connecting arm, and the end of the adjusting screw abuts against the limiting top plate.

5. The mold clamping device of a single-motor double-cam blow molding machine according to claim 1, characterized in that, The mold opening and closing assembly further includes a gear and rack component, a lifting component, and a lifting bracket. The lifting component is on the second mold plate. The gear and rack component includes a fixed rack and a movable gear that mesh with each other. The fixed rack is arranged parallel to the swing frame base. The movable gear is rotatably connected to the second mold plate. The movable gear is connected to the input end of the lifting component. The lifting bracket is connected to the lifting end of the lifting component.

6. The mold clamping device of a single-motor double-cam bottle blowing machine according to claim 5, characterized in that, The gear and rack component further includes a template servo motor. The template servo motor is arranged on the second mold plate, and the rotating shaft end of the template servo motor is connected to the movable gear.

7. A mold clamping device for a single-motor double-cam bottle blowing machine according to claim 5, characterized in that, The lifting component includes a first lifting pulley, a second lifting pulley, and a synchronous belt. The first lifting pulley and the second lifting pulley are arranged up and down on one side of the second mold plate. The synchronous belt meshes with the first lifting pulley and the second lifting pulley. The second lifting pulley is coaxially connected to the movable gear, and the synchronous belt is connected to the lifting bracket.

8. A mold clamping device for a single-motor double-cam bottle blowing machine according to claim 1, characterized in that, The length of the mold clamping tie rod is adjustable.

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