Safety protection device of film blowing machine

Abstract

The utility model relates to the technical field of blow molding machines, and discloses a safety protection device of a film blowing machine, which comprises a rectangular protection cavity used for performing safety protection on the periphery of the film blowing machine, the rectangular protection cavity comprises a plurality of horizontal telescopic units, and the horizontal telescopic units are connected end to end to form a plurality of rectangular frame bodies. The rectangular frame bodies are longitudinally arranged in parallel at equal intervals and connected through a longitudinal interval adjusting mechanism. Safety protection is carried out on the film blowing machine from the periphery of the film blowing machine through the rectangular protection cavity, safety production of the film blowing machine is effectively guaranteed, horizontal size adjustment of the rectangular frame bodies can be achieved through stretching and retracting of the horizontal stretching and retracting unit, adjustment of the longitudinal distance of the rectangular frame bodies can be achieved through the longitudinal distance adjusting mechanism, and production efficiency is improved. The overall protection size of the protection device can be adjusted by adjusting the horizontal size and the longitudinal distance, so that the protection device can be suitable for film blowing machines of different sizes, and is simple in structure and high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of blow molding machines, in particular to a safety protection device for a film blowing machine. Background Art

[0002] Blow molding machines are a new type of plastic processing machine developed in modern society. Their basic structure consists of a die, extruder, and hopper. Raw materials are fed from the hopper, heated by the extruder, and then extruded from the die. Compressed air is then introduced through the die's air vents into a thin-walled tube, inflating the tube into a film.

[0003] The existing safety protection mechanism technology of film blowing machines has the following problems: the overall protection size is fixed, which leads to large limitations in its use and is only applicable to film blowing machines of the same size. Once a problem occurs with the film blowing machine of the applicable size, the safety protection mechanism will also lose its working ability and cannot be reused, which will bring about huge waste of resources and installation limitations. Utility Model Content

[0004] The purpose of the utility model is to provide a safety protection device for a film blowing machine, which can realize the adjustment of the overall protection size of the protection device, so that it can be applied to film blowing machines of different sizes, has a simple structure and strong versatility.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A safety protection device for a film blowing machine includes a rectangular protection cavity for providing safety protection around the film blowing machine. The rectangular protection cavity includes multiple horizontal telescopic units. The horizontal telescopic units are connected end to end to form multiple rectangular frames. The rectangular frames are arranged in parallel with equal longitudinal spacing and are connected by a longitudinal spacing adjustment mechanism.

[0007] By adopting the above technical solution, the rectangular protective cavity is used to provide safe protection for the film blowing machine from all sides, effectively ensuring the safe production of the film blowing machine. The horizontal telescopic unit can adjust the horizontal size of the rectangular frame through telescoping, and the longitudinal spacing adjustment mechanism can adjust the longitudinal spacing of each rectangular frame. The overall protective size of the protective device can be adjusted by adjusting the horizontal size and longitudinal spacing. Therefore, it can be applied to film blowing machines of different sizes, with a simple structure and strong versatility.

[0008] The present invention is further configured as follows: the longitudinal spacing adjustment mechanism includes vertical telescopic units for adjusting the longitudinal spacing of the rectangular frames to be equally spaced, and each vertical telescopic unit has the same structure as the horizontal telescopic unit.

[0009] By adopting the above technical solution, each vertical telescopic unit has the same structure as the horizontal telescopic unit, which further improves the interchangeability between components, effectively reduces the development cost of components, and makes the processing cost of the device lower.

[0010] The utility model is further configured as follows: the horizontal telescopic unit and the vertical telescopic unit both include a coaxially arranged telescopic rod 1 and a telescopic rod 2, and one end of the telescopic rod 1 and the telescopic rod 2 connected to each other is respectively provided with a plug and a slot that are plugged into each other, and the plug and the slot are both connected to the telescopic adjustment mechanism.

[0011] By adopting the above technical solution, the telescopic adjustment mechanism adjusts the overall length of the telescopic rod 1 and the telescopic rod 2 in the horizontal telescopic unit and the vertical telescopic unit by adjusting the position of the sliding fit of the plug and the slot of the telescopic rod 1 and the telescopic rod 2 in the horizontal telescopic unit and the vertical telescopic unit. By adjusting the overall length of the telescopic rod 1 and the telescopic rod 2 in the horizontal telescopic unit and the vertical telescopic unit, the horizontal size and longitudinal spacing of the horizontal telescopic unit and the vertical telescopic unit can be adjusted, thereby achieving the adjustment of the overall protective size of the protective device.

[0012] The present invention is further configured as follows: the telescopic adjustment mechanism includes a rack 1 respectively fixed on one side of the plug in each horizontal telescopic unit or vertical telescopic unit, and a rack 2 respectively fixed on the other side of the slot in each horizontal telescopic unit or vertical telescopic unit, the rack 1 and the rack 2 are both engaged with the adjustment gear, each of the adjustment gears is keyed to the gear shaft, and each of the plugs is rotationally connected to the gear shaft.

[0013] By adopting the above technical solution, when it is necessary to adjust the overall length of the horizontal telescopic unit or the vertical telescopic unit, the gear shaft is rotated so that the gear shaft drives the various adjustment gears to rotate synchronously. When each adjustment gear rotates, it drives the rack 1 and rack 2 engaged therewith to slide in the direction of approaching or moving away from each other. Since the rack 1 and rack 2 are respectively fixed on one side of the plug and slot in each horizontal telescopic unit or vertical telescopic unit, when the rack 1 and rack 2 slide in the direction of approaching or moving away from each other, they will drive the plug to slide relative to the slot, thereby realizing the adjustment of the overall length of the horizontal telescopic unit or the vertical telescopic unit. The adjustment process is simple and the operation is convenient.

[0014] The utility model is further configured as follows: a locking mechanism is provided on the plug of each vertical telescopic unit and the horizontal telescopic unit located at the uppermost end, and the locking mechanism includes a locking bolt rotatably connected to a through hole on one side of the center of the adjusting gear and a plurality of threaded holes arranged on the plug below the locking bolt, and the circumference of each threaded hole matches the trajectory of the locking bolt as the adjusting gear rotates.

[0015] By adopting the above technical solution, the locking mechanism is used to lock the telescopic adjustment mechanism after the overall length of the telescopic rod one and the telescopic rod two in each horizontal telescopic unit or vertical telescopic unit is adjusted, so that the overall length of the telescopic rod one and the telescopic rod two in each horizontal telescopic unit or vertical telescopic unit can remain fixed after adjustment, thereby making the overall protective size of the protective device stable after adjustment, effectively ensuring the reliability of the protective device. When the locking operation is required, the locking bolt passes through the through hole on the adjusting gear and is connected to the threaded hole corresponding to the through hole, so that the adjusting gear cannot rotate, thereby making the pick one and the rack two respectively engaged with the adjusting gear not slide, thereby realizing the locking of the telescopic adjustment mechanism, with a simple structure and easy operation.

[0016] The utility model is further configured as follows: springs are provided between adjacent horizontal telescopic units, and the springs are sleeved on the outer wall of the gear shaft.

[0017] By adopting the above technical solution, the spring is used to support adjacent horizontal telescopic units, so that a certain distance is maintained between adjacent horizontal telescopic units. The spring is also elastic, which facilitates the adjustment of the distance between adjacent horizontal telescopic units.

[0018] The present invention is further configured as follows: the other ends of telescopic rod one and telescopic rod two in the horizontal telescopic unit are provided with a T-shaped slot and a T-shaped head for cooperating with the T-shaped slot; the T-shaped head is arranged at the ends of telescopic rod one and telescopic rod two; the T-shaped slot is arranged on the inner side walls of telescopic rod one and telescopic rod two; the T-shaped head of telescopic rod one is cooperated and connected with the T-shaped slot on telescopic rod two.

[0019] By adopting the above technical solution, the horizontal telescopic unit is connected end to end and forms a rectangular frame by slidingly engaging the T-shaped head at the other end of telescopic rod one or telescopic rod two with the T-shaped slot on the inner wall of telescopic rod one or telescopic rod two in the adjacent horizontal telescopic unit. Telescopic rod one and telescopic rod two are connected with the T-shaped head through the T-shaped slot, which not only simplifies the connection process and facilitates assembly and disassembly, but also improves the stability after connection, further ensuring the reliability of the protective device.

[0020] The present invention is further configured as follows: the T-shaped heads at the four corners of the topmost rectangular frame are fixedly connected to the top ends of the vertical telescopic units through connecting plates.

[0021] By adopting the above technical solution, when it is necessary to adjust the spacing between the horizontal telescopic units in each rectangular frame, the overall length of the vertical telescopic unit is adjusted first. By adjusting the overall length of the vertical telescopic unit, the T-shaped head connected to it in the rectangular frame is driven to rise or fall. When the T-shaped head rises or falls, it will drive its corresponding horizontal telescopic unit to slide up and down along the gear shaft. In the process of sliding up and down, the horizontal telescopic unit will cause the horizontal telescopic unit in the rectangular frame below it to rise or fall synchronously under the action of the spring force, thereby realizing the adjustment of the spacing between the horizontal telescopic units in each rectangular frame. The adjustment process is simple and easy to operate.

[0022] The present invention is further configured as follows: in the horizontal telescopic unit, one end of the telescopic rod 1 having the T-shaped slot is also provided with a limit plate, one end of the limit plate is fixed to the top of the telescopic rod 1, and the other end of the telescopic rod 1 extends to be opposite to the T-shaped slot.

[0023] By adopting the above technical solution, the limiting plate is used to limit the T-shaped head that slides in the T-shaped slot, so that each horizontal telescopic unit slides in the T-shaped slot on the inner wall of the telescopic rod one or the telescopic rod two in the adjacent horizontal telescopic unit through the T-shaped head at the other end of the telescopic rod one or the telescopic rod two, thereby achieving end-to-end connection and forming a rectangular frame without separation due to relative sliding, effectively ensuring the stability of the rectangular frame and further improving the reliability of the protective device.

[0024] The beneficial effects of the utility model are:

[0025] 1. The rectangular protective cavity in the utility model is used to provide safety protection for the film blowing machine from all sides, effectively ensuring the safe production of the film blowing machine. The horizontal telescopic unit can adjust the horizontal size of the rectangular frame by telescoping, and the longitudinal spacing adjustment mechanism can adjust the longitudinal spacing of each rectangular frame. The overall protective size of the protective device can be adjusted by adjusting the horizontal size and longitudinal spacing. Therefore, it can be applied to film blowing machines of different sizes, with a simple structure and strong versatility.

[0026] 2. In the present invention, each vertical telescopic unit has the same structure as the horizontal telescopic unit, which further improves the interchangeability between components, effectively reduces the development cost of components, and makes the processing cost of the device lower.

[0027] 3. The telescopic adjustment mechanism of the present invention adjusts the overall length of the telescopic rod 1 and the telescopic rod 2 in the horizontal telescopic unit and the vertical telescopic unit by adjusting the position of the sliding fit of the plug and the slot of the telescopic rod 1 and the telescopic rod 2 in the horizontal telescopic unit and the vertical telescopic unit. By adjusting the overall length of the telescopic rod 1 and the telescopic rod 2 in the horizontal telescopic unit and the vertical telescopic unit, the horizontal size and longitudinal spacing of the horizontal telescopic unit and the vertical telescopic unit can be adjusted, thereby achieving the adjustment of the overall protective size of the protective device. During adjustment, the gear shaft is rotated so that the gear shaft drives each adjustment gear to rotate synchronously. When each adjustment gear rotates, it drives the rack 1 and the rack 2 meshed with it to slide in the direction of approaching or moving away from each other. Since the rack 1 and the rack 2 are respectively fixed to one side of the plug and the slot in each horizontal telescopic unit or vertical telescopic unit, when the rack 1 and the rack 2 slide in the direction of approaching or moving away from each other, it will drive the plug to slide relative to the slot, thereby achieving the adjustment of the overall length of the horizontal telescopic unit or the vertical telescopic unit. The adjustment process is simple and easy to operate.

[0028] 4. The locking mechanism in the present invention is used to lock the telescopic adjustment mechanism after the overall length of the telescopic rod 1 and the telescopic rod 2 in each horizontal telescopic unit or vertical telescopic unit is adjusted, so that the overall length of the telescopic rod 1 and the telescopic rod 2 in each horizontal telescopic unit or vertical telescopic unit can remain fixed after adjustment, thereby making the overall protective size of the protective device stable after adjustment, effectively ensuring the reliability of the protective device.

[0029] 5. In the utility model, the horizontal telescopic unit is connected end to end and forms a rectangular frame by sliding the T-shaped head at the other end of the telescopic rod one or the telescopic rod two with the T-shaped slot on the inner wall of the telescopic rod one or the telescopic rod two in the adjacent horizontal telescopic unit. The telescopic rod one and the telescopic rod two are connected by the T-shaped slot and the T-shaped head, which not only simplifies the connection process and facilitates assembly and disassembly, but also improves the stability after connection, further ensuring the reliability of the protective device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 The utility model is a schematic top view of a safety protection device of a film blowing machine.

[0032] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle A.

[0033] Figure 3 yes Figure 1 Schematic diagram of the B-direction cross-section.

[0034] Figure 4 The utility model is a structural schematic diagram of a threaded hole on a plug in a safety protection device of a film blowing machine.

[0035] In the figure, 1. rectangular protective cavity; 11. horizontal telescopic unit; 111. telescopic rod 1; 112. telescopic rod 2; 113. plug; 114. slot; 115. T-slot; 116. T-head; 117. connecting plate; 12. longitudinal spacing adjustment mechanism; 13. telescopic adjustment mechanism; 131. rack 1; 132. rack 2; 133. adjustment gear; 134. gear shaft; 135. through hole; 14. locking mechanism; 141. locking bolt; 142. threaded hole; 15. spring; 16. limit plate. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0037] like Figures 1 to 4 As shown, a safety protection device for a film blowing machine includes a rectangular protection cavity 1 for providing safety protection around the film blowing machine. The rectangular protection cavity 1 includes a plurality of horizontal telescopic units 11. The horizontal telescopic units 11 are connected end to end to form a plurality of rectangular frames. The rectangular frames are arranged in parallel with equal longitudinal spacing and are connected by a longitudinal spacing adjustment mechanism 12.

[0038] Furthermore, the longitudinal spacing adjustment mechanism 12 includes vertical telescopic units for adjusting the longitudinal spacing of the rectangular frames to be equal in spacing, and each vertical telescopic unit has the same structure as the horizontal telescopic unit 11 .

[0039] Furthermore, the horizontal telescopic unit 11 and the vertical telescopic unit both include a coaxially arranged telescopic rod 111 and a telescopic rod 2 112, and the ends of the telescopic rod 111 and the telescopic rod 2 112 that are connected to each other are respectively provided with a plug 113 and a slot 114 that are plugged into each other, and the plug 113 and the slot 114 are both connected to the telescopic adjustment mechanism 13.

[0040] Furthermore, the telescopic adjustment mechanism 13 includes a rack 131 respectively fixed on one side of the plug 113 in each horizontal telescopic unit 11 or vertical telescopic unit, and a rack 2 132 respectively fixed on the other side of the slot 114 in each horizontal telescopic unit 11 or vertical telescopic unit. The rack 131 and the rack 2 132 are both engaged with the adjustment gear 133, and each of the adjustment gears 133 is key-connected to the gear shaft 134, and each of the plugs 113 is rotationally connected to the gear shaft 134.

[0041] Furthermore, a locking mechanism 14 is provided on the plug 113 in each vertical telescopic unit and the horizontal telescopic unit 11 located at the top end. The locking mechanism 14 includes a locking bolt 141 rotatably connected to the through hole 135 on one side of the center of the adjusting gear 133 and a plurality of threaded holes 142 arranged on the plug 113 below the locking bolt 141. The circumference of each threaded hole 142 matches the trajectory of the locking bolt 141 as it rotates with the adjusting gear 133.

[0042] Furthermore, springs 15 are provided between adjacent horizontal telescopic units 11 , and the springs 15 are sleeved on the outer wall of the gear shaft 134 .

[0043] Furthermore, the other ends of telescopic rod 1 111 and telescopic rod 2 112 in the horizontal telescopic unit 11 are provided with a T-shaped slot 115 and a T-shaped head 116 for cooperating with the T-shaped slot 115. The T-shaped head 116 is arranged at the ends of telescopic rod 1 111 and telescopic rod 2 112, and the T-shaped slot 115 is arranged on the inner side walls of telescopic rod 1 111 and telescopic rod 2 112. The T-shaped head 116 of telescopic rod 1 111 is cooperated and connected with the T-shaped slot 115 on telescopic rod 2 112.

[0044] Furthermore, the T-shaped heads 116 located at the four corners of the topmost rectangular frame are fixedly connected to the top ends of the vertical telescopic units through connecting plates 117 .

[0045] Furthermore, in the horizontal telescopic unit 11, one end of the telescopic rod 111 having the T-shaped slot 115 is also provided with a limit plate 16, one end of the limit plate 16 is fixed to the top of the telescopic rod 111, and the other end of the telescopic rod 111 extends to be opposite to the T-shaped slot 115.

[0046] The working principle of the utility model is as follows: the film blowing machine is safely protected from all sides by the rectangular protective cavity 1, which effectively ensures the safe production of the film blowing machine. The horizontal telescopic unit 11 can adjust the horizontal size of the rectangular frame by telescoping, and the longitudinal spacing adjustment mechanism 12 can adjust the longitudinal spacing of each rectangular frame. The overall protective size of the protective device can be adjusted by adjusting the horizontal size and longitudinal spacing. Therefore, it can be applied to film blowing machines of different sizes, with a simple structure and strong versatility.

[0047] When it is necessary to adjust the overall length of the horizontal telescopic unit 11 or the vertical telescopic unit, the gear shaft 134 is rotated so that the gear shaft 134 drives each adjusting gear 133 to rotate synchronously. When each adjusting gear 133 rotates, it drives the rack 131 and the rack 2 132 meshing therewith to slide in the direction of approaching or moving away from each other. Since the rack 131 and the rack 2 132 are respectively fixed to one side of the plug 113 and the slot 114 in each horizontal telescopic unit 11 or vertical telescopic unit, when the rack 131 and the rack 2 132 slide in the direction of approaching or moving away from each other, the plug 113 will be driven to slide relative to the slot 114, thereby realizing the adjustment of the overall length of the horizontal telescopic unit 11 or the vertical telescopic unit. The adjustment process is simple and the operation is convenient.

[0048] The locking mechanism 14 is used to lock the telescopic adjustment mechanism 13 after the overall length of the telescopic rod 111 and the telescopic rod 2 112 in each horizontal telescopic unit 11 or the vertical telescopic unit is adjusted, so that the overall length of the telescopic rod 111 and the telescopic rod 2 112 in each horizontal telescopic unit 11 or the vertical telescopic unit can remain fixed after adjustment, so that the overall protective size of the protective device can remain stable after adjustment, effectively ensuring the reliability of the protective device. When the locking operation is required, the locking bolt 141 passes through the through hole 135 on the adjusting gear 133 and is connected to the threaded hole 142 corresponding to the through hole 135, so that the adjusting gear 133 cannot rotate, so that the rack 1 and the rack 2 132 respectively engaged with the adjusting gear 133 will not slide, thereby realizing the locking of the telescopic adjustment mechanism 13, with a simple structure and easy operation.

Claims

1. A safety protection device for a film blowing machine, characterized by: The invention comprises a rectangular protective cavity (1) for providing safety protection around a film blowing machine, wherein the rectangular protective cavity (1) comprises a plurality of horizontal telescopic units (11), wherein the horizontal telescopic units (11) are connected end to end to form a plurality of rectangular frames, and the rectangular frames are arranged in parallel at equal longitudinal intervals and connected via a longitudinal interval adjustment mechanism (12).

2. The safety protection device for a film blowing machine according to claim 1, characterized in that: The longitudinal spacing adjustment mechanism (12) comprises vertical telescopic units for adjusting the longitudinal spacing of the rectangular frames to be equal in spacing, and each vertical telescopic unit has the same structure as the horizontal telescopic unit (11).

3. The safety protection device for a film blowing machine according to claim 1, characterized in that: The horizontal telescopic unit (11) and the vertical telescopic unit both comprise a coaxially arranged telescopic rod 1 (111) and a coaxially arranged telescopic rod 2 (112); one end of the telescopic rod 1 (111) and the coaxially connected telescopic rod 2 (112) is respectively provided with a plug (113) and a slot (114) that are plugged into and matched with each other; and the plug (113) and the slot (114) are both connected to the telescopic adjustment mechanism (13).

4. The safety protection device for a film blowing machine according to claim 3, characterized in that: The telescopic adjustment mechanism (13) comprises a rack (131) fixed on one side of the plug (113) in each horizontal telescopic unit (11) or vertical telescopic unit, and a rack (132) fixed on the other side of the slot (114) in each horizontal telescopic unit (11) or vertical telescopic unit, wherein the rack (131) and the rack (132) are both engaged with an adjustment gear (133), each adjustment gear (133) is key-connected to a gear shaft (134), and each plug (113) is rotationally connected to the gear shaft (134).

5. The safety protection device for a film blowing machine according to claim 4, characterized in that: Each vertical telescopic unit and the plug (113) in the uppermost horizontal telescopic unit (11) are provided with a locking mechanism (14), wherein the locking mechanism (14) comprises a locking bolt (141) rotatably connected to a through hole (135) on one side of the center of the adjusting gear (133) and a plurality of threaded holes (142) arranged on the plug (113) below the locking bolt (141), wherein the circumference of each threaded hole (142) matches the trajectory of the locking bolt (141) as it rotates with the adjusting gear (133).

6. The safety protection device for a film blowing machine according to claim 5, characterized in that: A spring (15) is provided between adjacent horizontal telescopic units (11), and the spring (15) is sleeved on the outer wall of the gear shaft (134).

7. A safety protection device for a film blowing machine according to any one of claims 3 to 6, characterized in that: The other ends of the telescopic rod 1 (111) and the telescopic rod 2 (112) in the horizontal telescopic unit (11) are both provided with a T-shaped groove (115) and a T-shaped head (116) for cooperating with the T-shaped groove (115); the T-shaped head (116) is arranged at the ends of the telescopic rod 1 (111) and the telescopic rod 2 (112); the T-shaped groove (115) is arranged on the inner side walls of the telescopic rod 1 (111) and the telescopic rod 2 (112); the T-shaped head (116) of the telescopic rod 1 (111) is cooperating and connected with the T-shaped groove (115) on the telescopic rod 2 (112).

8. The safety protection device for a film blowing machine according to claim 7, characterized in that: The T-shaped heads (116) at the four corners of the topmost rectangular frame are fixedly connected to the top ends of the vertical telescopic units through connecting plates (117).

9. The safety protection device for a film blowing machine according to claim 8, characterized in that: In the horizontal telescopic unit (11), a telescopic rod (111) is provided with a T-shaped slot (115) at one end thereof and a limiting plate (16). One end of the limiting plate (16) is fixed to the top of the telescopic rod (111), and the other end of the telescopic rod (111) extends to be opposite to the T-shaped slot (115).

Images