Safety maintenance platform based on the clamping area of ​​the injection molding machine

Abstract

The present invention relates to the technical field of injection molding machines, and specifically discloses a safety maintenance platform based on the mold clamping area of ​​the injection molding machine, including a step frame and a bracket arranged directly below the step frame, at least two guide structures are fixed on the bracket, a limit member is fixed on the bracket, a travel switch electrically connected to the injection molding machine is arranged on the limit member, and each transmission mechanism includes two transmission members, and the four transmission members are respectively located on the four corners of the step frame; the safety maintenance platform based on the mold clamping area of ​​the injection molding machine of the present invention, if a corner of the step frame is subjected to pressure, the step frame drives the upper connecting frame of the transmission member below the corner to move downward, and pulls down the pull rope of the diagonal upper transmission member, and the pull rope will pull down the upper connecting frame of the diagonal upper transmission member, so that the diagonal position of the step frame is also subjected to the downward force and moves downward, so that the pressure can be dispersed on the step frame, avoiding the step frame from tilting, ensuring that the step frame moves down in a balanced manner to press the travel switch, and improving the safety performance.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, and in particular to a safety maintenance platform based on a mold clamping area of ​​an injection molding machine. Background Art

[0002] The safety maintenance platform in the mold clamping area of ​​the injection molding machine is a safety auxiliary device used to repair the injection molding machine. It mainly uses springs to directly support the pedal frame and the pedal. If the maintenance personnel step on the pedal, the pedal and the pedal frame will be pressed down, causing the pedal frame to move down and trigger the travel switch. The travel switch cuts off the power to the injection molding machine to prevent the working injection molding machine from injuring people, so as to ensure the personal safety of the maintenance personnel.

[0003] A Chinese patent document with announcement number CN111660501B discloses a safe maintenance work platform for use in the mold clamping area of ​​an injection molding machine, comprising a bracket, a tread frame, a pedal, a guide post, a compression spring, a travel switch and an adjustment mechanism. A guide post is arranged on the bracket, and a compression spring is sleeved on the guide post. The compression spring is used to support the tread frame. At the same time, a travel switch is arranged between the tread frame and the bracket. The travel switch can be used to cut off the power supply of the injection molding machine when the maintenance personnel step on the pedal to ensure the safety of the maintenance personnel. An adjustment mechanism is also provided to control the compression spring through a folding plate and an adjusting screw, so that the initial position of the tread frame is adjustable. The platform can be applied to injection molding machines of different models, and is easy to assemble and maintain.

[0004] However, the above technical solution still has the following defects. The maintenance personnel generally only step on a certain part of the pedal. If the maintenance personnel do not step on the middle part of the pedal, the pressure of the human body cannot be evenly distributed on the pedal frame. That is, if the maintenance personnel step on a corner of the pedal, the corner will move downward due to the greater pressure, but the corner diagonally opposite to the compressed corner may not move downward due to the greater distance. It may even cause the pedal frame to tilt and generate shear force with the guide column, thus twisting the pedal frame. In addition, it may also cause the travel switch to fail to be triggered, and the injection molding machine cannot be powered off. The safety performance is not high. Summary of the invention

[0005] The present invention provides a safe maintenance platform based on the mold clamping area of ​​an injection molding machine, aiming to solve the problem in the related art that if the maintenance personnel does not step on the middle of the pedal but steps on a corner of the pedal, the pressure of the human body cannot be evenly dispersed on the pedal frame.

[0006] The safety maintenance platform based on the mold clamping area of ​​the injection molding machine of the present invention comprises a step frame and a bracket arranged directly below the step frame, wherein a pedal is installed on the step frame, and further comprises:

[0007] At least two guide structures are fixed on the bracket, and the step frame is slidable up and down on the guide structure;

[0008] A limiting member is fixed on the bracket, and the step frame can fall on the limiting member when it moves downward;

[0009] A travel switch electrically connected to the injection molding machine is arranged on the limiter, and the downward movement of the pedal frame can press the travel switch to control the injection molding machine to stop;

[0010] Two transmission mechanisms are arranged crosswise and in an "X" shape, each of the transmission mechanisms comprises two transmission members, and the four transmission members are respectively located at the four corners of the pedal frame;

[0011] Each of the transmission parts includes an upper connecting frame fixed on the pedal frame and a lower connecting frame fixed on the bracket, the upper connecting frame is provided with a pull rope, the lower connecting frame is fixed with an upper guide member and a lower guide member, and the pull rope passes around the lower guide member; in the same transmission mechanism, the pull rope on any one of the transmission parts passes around the upper guide member on another transmission part and is fixed on the upper connecting frame of the other transmission part.

[0012] If the maintenance personnel steps on a corner of the pedal, the corner is subjected to pressure and transmitted to the pedal frame below, and the pedal frame drives the upper connecting frame of the transmission member below the corner to move downward, and the upper connecting frame will pull down the pull rope of the diagonal upper transmission member, and the pull rope will pull down the upper connecting frame of the diagonal upper transmission member, so that the upper connecting frame on the diagonal moves downward, and then the diagonal position of the pedal frame is also subjected to downward force and moves downward. The pressure of the human body can be evenly dispersed on the pedal frame, ensuring that the pedal frame moves down in a balanced manner and presses the travel switch, so that the travel switch controls the injection molding machine to cut off power and stop, and finally the pedal frame moves down and falls on the limit member.

[0013] Preferably, the pedal frame includes a frame body, through holes are opened at the four corners of the frame body, a guide sleeve is fixed at the bottom of each through hole, the number of the guide structures is four, and the inner sides of the four guide sleeves are slidably connected to the four guide structures respectively.

[0014] Preferably, each of the guide structures also has a seat plate fixed on the bracket, a guide column is fixed on the seat plate, the guide column is slidably connected to the inner side of the guide sleeve, a lower adjustment plate is slidably connected to the guide column with a single degree of freedom, an adjustment driving mechanism is provided between the lower adjustment plate and the guide column to drive the lower adjustment plate to move up and down, a limiting plate located directly above the lower adjustment plate is detachably mounted on the guide column, the lower surface of the limiting plate is crimped against the top surface of the guide sleeve, and an elastic member is abutted between the lower adjustment plate and the guide sleeve.

[0015] Preferably, the guide column is provided with two limiting grooves which are parallel to each other, and the lower adjustment plate is slidably connected to the two limiting grooves.

[0016] Preferably, a first screw hole is provided at the top of the guide column, a bolt is threadedly connected to the first screw hole, the limiting plate is sleeved on the bolt, and the bolt head of the bolt is crimped to the upper surface of the limiting plate, and adjustment holes are provided at the four corners of the pedal, and the four adjustment holes are respectively corresponding to the four bolts.

[0017] Rotating the bolt can adjust the height of the bolt head, and then adjust the position of the limiting plate to adjust the up and down movement of the pedal, and then adjust the softness and hardness of the pedal to suit different people; the bolt can be directly rotated through the adjustment hole without removing the pedal, thereby improving ease of use.

[0018] Preferably, the adjustment drive mechanism comprises an external thread section provided on the guide column, a rotating sleeve is threadedly connected to the external thread section, and the top of the rotating sleeve is in contact with the bottom of the lower adjustment plate.

[0019] Rotating the rotating sleeve can force the rotating sleeve to move along the guide column, and the movement of the rotating sleeve drives the lower adjustment plate to move, thereby adjusting the distance between the lower adjustment plate and the pedal frame and adjusting the compression degree of the elastic member.

[0020] Preferably, the rotating sleeve includes a driving swivel, an inner side of the driving swivel is provided with an internal thread section threadedly connected to the external thread section, the outer surface of the driving swivel is provided with anti-slip grooves, and the top of the driving swivel is rollingly connected with at least two balls, and each of the balls is rollingly connected to the bottom surface of the lower adjustment plate.

[0021] The anti-slip pattern can increase the friction between the human hand and the driving swivel, making it easier to twist the entire rotating sleeve. When the rotating sleeve rotates, the ball can roll with the bottom surface of the lower adjusting plate to reduce the friction between the lower adjusting plate and the rotating sleeve.

[0022] Preferably, each of the upper connecting frames is L-shaped and has a connecting portion. In the same transmission member, a second screw hole is provided on the connecting portion, a connecting column is threadedly connected to the second screw hole, a step hole is provided in the connecting column, a limiting platform is provided in the step hole, a limiting plate is rotatably connected in the step hole, the limiting plate abuts against the limiting platform, and the pull rope is inserted into the step hole and fixedly connected to the limiting plate.

[0023] Preferably, the upper guide member includes an upper pulley seat, to which an upper pulley is rotatably connected, and the lower guide member includes a lower pulley seat, to which a lower pulley is rotatably connected, and both the upper pulley and the lower pulley have grooves that overlap with the pull rope.

[0024] Preferably, in the same transmission member, the connecting portion is located between the upper pulley and the lower pulley.

[0025] The beneficial effect of the present invention is that if the maintenance personnel steps on a corner of the pedal, the corner is subjected to pressure and the pressure is transmitted to the pedal frame below, and the pedal frame drives the upper connecting frame of the transmission member below the corner to move downward, and the upper connecting frame will pull down the pull rope of the diagonal upper transmission member, and the pull rope will pull down the upper connecting frame of the diagonal upper transmission member, so that the upper connecting frame on the diagonal moves downward, and then the diagonal position of the pedal frame is also subjected to the downward force and moves downward. The pressure of the human body can be evenly dispersed on the pedal frame, avoiding the tilt of the pedal frame and the shear force generated with the guide structure, thereby preventing the pedal frame from being twisted, ensuring the balanced downward movement of the pedal frame and pressing the travel switch, so that the travel switch controls the injection molding machine to cut off the power and stop, and finally the pedal frame moves down and falls on the limit member, thereby improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention.

[0027] Figure 2 It is another structural schematic diagram of a specific embodiment of the present invention.

[0028] Figure 3 It is a structural schematic diagram of a pedal frame and a pedal in a specific embodiment of the present invention.

[0029] Figure 4 It is a structural schematic diagram of a guide structure of a specific embodiment of the present invention.

[0030] Figure 5 It is an exploded view of the guide structure of a specific embodiment of the present invention.

[0031] Figure 6 It is a structural schematic diagram of a rotating sleeve in a specific embodiment of the present invention.

[0032] Figure 7 It is a structural schematic diagram of a pedal frame, a bracket, a guide structure, a limit member, a travel switch and a transmission mechanism in a specific embodiment of the present invention.

[0033] Figure 8 It is a specific embodiment of the present invention Figure 7 Schematic diagram of the structure enlarged at point A in the middle.

[0034] Fig. 9 It is a schematic structural diagram of a transmission member in a specific embodiment of the present invention.

[0035] Fig.10 It is a structural schematic diagram of an upper connecting frame, a connecting column and a limiting plate in a specific embodiment of the present invention.

[0036] Fig.11 It is a schematic structural diagram of a connection column in a specific embodiment of the present invention.

[0037] Reference numerals:

[0038] 10. pedal frame; 11. frame body; 111. through hole; 12. guide sleeve; 20. bracket; 30. pedal; 31. adjustment hole; 40. guide structure; 41. seat plate; 42. guide column; 421. limiting groove; 422. first screw hole; 43. lower adjustment plate; 44. adjustment drive mechanism; 441. external thread section; 442. rotating sleeve; 4421. driving swivel; 4422. ball bearing; 45. bolt; 46. limiting Production piece; 47, elastic member; 50, limit member; 60, travel switch; 70, transmission mechanism; 71, transmission member; 711, upper connecting frame; 7111, connecting part; 7112, second screw hole; 7113, connecting column; 7114, step hole; 7115, limiting platform; 7116, limiting plate; 7117, pulling part; 712, lower connecting frame; 713, pull rope; 714, upper guide member; 715, lower guide member. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figures 1 to 11 As shown, the safety maintenance platform based on the mold clamping area of ​​the injection molding machine of the present invention includes a pedal frame 10 and a bracket 20. A pedal 30 is installed above the pedal frame 10. At least two guide structures 40 are installed between the pedal frame 10 and the bracket 20 to connect the pedal frame 10 and the bracket 20 as a whole. At least one limit member 50 is installed on the bracket 20 to limit the lowest downward position of the pedal frame 10. A travel switch 60 is installed on one of the limit members 50. The travel switch 60 is electrically connected to the injection molding machine. The downward movement of the pedal frame 10 can press the travel switch 60 to control the injection molding machine to stop. Two transmission mechanisms 70 are arranged between the pedal frame 10 and the bracket 20 to balance the pressure of the pedal frame 10.

[0041] refer to Figures 1 to 3As shown, the four corners of the step frame 10 and the four corners of the bracket 20 are aligned one by one. The step frame 10 includes a frame body 11, which is welded steel structure. The frame body 11 is square in shape as a whole. Through holes 111 are provided at the four corners of the frame body 11. A guide sleeve 12 is welded at the bottom of each through hole 111. In this embodiment, there are four guide structures 40, and the four guide sleeves 12 are respectively connected with the four guide structures 40. The bracket 20 is welded steel structure. The bracket 20 is square in shape as a whole. The four corners of the bracket 20 are respectively fixedly connected with the bottoms of the four guide structures 40. The pedal 30 is a square plate, and the entire safety maintenance platform is rectangular with two sets of diagonal corners.

[0042] refer to Figure 1 , Figure 2 , Figures 4 to 6 As shown, each guide structure 40 includes a seat plate 41 welded on the bracket 20, a guide column 42 is fixedly connected to the seat plate 41, two mutually parallel limiting grooves 421 are provided on the guide column 42, a lower adjustment plate 43 is slidably connected with the two limiting grooves 421 with a single degree of freedom, and the lower adjustment plate 43 can move up and down along the guide sliding of the limiting grooves 421, an adjustment drive mechanism 44 is arranged between the lower adjustment plate 43 and the guide column 42, and the adjustment drive mechanism 44 can drive the lower adjustment plate 43 to move up and down, a first screw hole 422 is provided on the top of the guide column 42, a bolt 45 is threadedly connected to the first screw hole 422, and a limiting sheet 46 is sleeved on the bolt 45, The bolt head on the bolt 45 is crimped against the upper surface of the limiting plate 46, and the lower surface of the limiting plate 46 is crimped against the top surface of the guide sleeve 12 on the pedal frame 10 to limit the highest moving position of the pedal frame 10. Rotating the bolt 45 can adjust the height of the bolt head, and then adjust the position of the limiting plate 46 to adjust the up and down movement of the pedal 30, and then adjust the softness and hardness of the pedal 30 to suit different people. It should be noted that adjustment holes 31 are provided at the four corners of the pedal 30, and the four adjustment holes 31 are respectively corresponding to the four bolts 45. The bolt 45 can be directly operated to rotate through the adjustment holes 31 without removing the pedal 30, thereby improving ease of use. At the same time, the limiting plate 46 can be removed by removing the bolt 45, which is convenient for maintenance and disassembly. The upper surface of the lower adjustment plate 43 is fixedly connected with an elastic member 47, and the top of the elastic member 47 abuts against the bottom surface of the guide sleeve 12 on the pedal frame 10. In the present embodiment, the elastic member 47 is a spring, and the elastic force of the elastic member 47 can drive the guide sleeve 12 to move so that the pedal frame 10 is away from the lower adjustment plate 43.

[0043] Exemplarily, the adjustment drive mechanism 44 includes an external threaded section 441 opened on the guide column 42, and a rotating sleeve 442 is threadedly connected to the external threaded section 441. The top of the rotating sleeve 442 contacts the bottom of the lower adjustment plate 43. Through the threaded connection between the rotating sleeve 442 and the external threaded section 441, rotating the rotating sleeve 442 can force the rotating sleeve 442 to move along the guide column 42. The movement of the rotating sleeve 442 drives the lower adjustment plate 43 to move, thereby adjusting the distance between the lower adjustment plate 43 and the pedal frame 10 and adjusting the compression degree of the elastic member 47.

[0044] It should be noted that the rotating sleeve 442 includes a driving ring 4421, and an internal thread section threadedly connected to the external thread section 441 is provided on the inner side of the driving ring 4421. The outer surface of the driving ring 4421 is provided with anti-slip grooves to increase the friction between the human hand and the driving ring 4421, so as to facilitate the twisting of the entire rotating sleeve 442. At least two grooves are provided on the top surface of the driving ring 4421, and all the grooves are evenly distributed along the circumferential direction of the driving ring 4421. A ball 4422 is rollingly connected in the groove on each driving ring 4421, and each ball 4422 is rollingly connected to the bottom surface of the lower adjustment plate 43. When the rotating sleeve 442 is twisted to rotate, the ball 4422 can roll with the bottom surface of the lower adjustment plate 43 to reduce the friction between the lower adjustment plate 43 and the rotating sleeve 442.

[0045] refer to Figure 1 , Figure 2 and Figure 7 As shown, all the limit members 50 are dispersedly welded on the upper surface of the bracket 20 so as to bear the pressure of the pedal frame 10 in a dispersed manner. The travel switch 60 is installed on one of the limit members 50. The pedal frame 10 moves downward and can fall on the limit member 50 and press the travel switch 60 to control the injection molding machine to stop. The limit member 50 can support the pedal frame 10 to prevent the pedal frame 10 from crushing the travel switch 60.

[0046] refer to Figure 1 , Figure 2 and Figure 7 As shown, the two transmission mechanisms 70 are both arranged between the pedal frame 10 and the bracket 20, and the two transmission mechanisms 70 are cross-arranged and in an "X" shape, and the two transmission mechanisms 70 are respectively installed on two sets of diagonal corners of the pedal frame 10 to balance the forces on the two diagonal corners, and each transmission mechanism 70 includes two transmission members 71, and the four transmission members 71 are respectively located on the four corners of the pedal frame 10.

[0047] refer to Figures 7 to 9As shown, each transmission member 71 includes an upper connecting frame 711 welded to the pedal frame 10 and a lower connecting frame 712 welded to the bracket 20, the upper connecting frame 711 is L-shaped, and has a connecting portion 7111 on the upper connecting frame 711, and a pull rope 713 is detachably connected to the connecting portion 7111. In this embodiment, the pull rope 713 is a steel wire rope, and an upper guide member 714 and a lower guide member 715 are fixedly installed on the lower connecting frame 712, the upper guide member 714 is located above the connecting portion 7111, and the lower guide member 715 is located below the connecting portion 7111, and the pull rope 713 bypasses the lower guide member 715; it should be noted that in the same transmission mechanism 70, any one The pull rope 713 on the transmission member 71 passes around the upper guide member 714 on the other transmission member 71 and is fixedly connected to the top of the connecting portion 7111 on the other transmission member 71; when one corner of the pedal 30 is under pressure, the pressure is transmitted to the pedal frame 10 below, and the pedal frame 10 drives the upper connecting frame 711 below the corner to move downward, and the connecting portion 7111 on the upper connecting frame 711 will pull down the pull rope 713 of the diagonal upper transmission member 71, and the pull rope 713 will pull down the connecting portion 7111 of the diagonal upper transmission member 71, so that the diagonal upper connecting frame 711 moves downward, and then the diagonal position of the pedal frame 10 is also subjected to downward force, so that the pedal frame 10 moves in a balanced manner.

[0048] refer to Figures 9 to 11 As shown, in the same transmission member 71, as an embodiment of a detachable connection method between the connecting portion 7111 and the pull rope 713, a second screw hole 7112 is provided on the connecting portion 7111, and a connecting column 7113 is threadedly connected in the second screw hole 7112. A step hole 7114 is provided in the connecting column 7113, and a limiting platform 7115 is provided in the step hole 7114. A limiting plate 7116 is rotatably connected in the step hole 7114, and the limiting plate 7116 abuts against the limiting platform 7115. The pull rope 713 penetrates the step hole 7114 and is fixedly connected to the limiting plate 7116. The bottom of the connecting column 7113 has a pull portion 7117, the pulling part 7117 is in the shape of a hexagonal tube, which is convenient for a wrench to clamp the pulling part 7117 to twist the entire connecting column 7113. The connecting column 7113 can be removed from the connecting part 7111 by rotation, and then one end of the pull rope 713 can be removed. In addition, the connecting column 7113 can be reversed to control the connecting column 7113 to be screwed into the second screw hole 7112, so that the tension of the pull rope 713 can be adjusted. When the connecting column 7113 rotates, the limiting plate 7116 can rotate relative to the step hole 7114, so that the limiting plate 7116 will not rotate with the connecting column 7113, thereby preventing the pull rope 713 from twisting.

[0049] Exemplarily, the upper guide member 714 includes an upper pulley seat, to which an upper pulley is rotatably connected, and the lower guide member 715 includes a lower pulley seat, to which a lower pulley is rotatably connected, and both the upper pulley and the lower pulley have grooves, and the pull rope 713 is overlapped in the groove. The upper pulley and the lower pulley can guide the guide of the pull rope 713, and the upper pulley is located above the connecting portion 7111, and the lower pulley is located below the connecting portion 7111.

[0050] During use, if the maintenance personnel steps on the pedal 30, the pressure through the pedal 30 presses the pedal frame 10 to overcome the elastic member 47 and move downward. The elastic member 47 is compressed, and the pedal frame 10 moves downward to press the travel switch 60, so that the travel switch 60 controls the injection molding machine to stop, and finally the pedal frame 10 moves downward and falls on the limit member 50; if the maintenance personnel leaves the pedal 30, the compressed elastic member 47 recovers under the action of its own elastic force, and drives the pedal frame 10 to move up and reset, so that the guide sleeve 12 on the pedal frame 10 rests on the bottom surface of the limiting plate 46.

[0051] If the maintenance personnel steps on a corner of the pedal 30, the corner is subjected to pressure, and the pressure is transmitted to the pedal frame 10 below. The pedal frame 10 drives the upper connecting frame 711 of the transmission member 71 below the corner to move downward, and the connecting part 7111 on the upper connecting frame 711 will pull down the pull rope 713 of the diagonal upper transmission member 71, and the pull rope 713 will pull down the connecting part 7111 of the diagonal upper transmission member 71, so that the diagonal upper connecting frame 711 moves downward, and then the diagonal position of the pedal frame 10 is also subjected to downward force, so that the pedal frame 10 moves in a balanced manner.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A safety maintenance platform based on the mold clamping area of ​​an injection molding machine, comprising a step frame and a bracket arranged directly below the step frame, wherein a pedal is installed on the step frame, and characterized in that: Also includes: At least two guide structures are fixed on the bracket, and the step frame is slidable up and down on the guide structure; A limiting member is fixed on the bracket, and the step frame can fall on the limiting member when it moves downward; A travel switch electrically connected to the injection molding machine is arranged on the limiter, and the downward movement of the pedal frame can press the travel switch to control the injection molding machine to stop; Two transmission mechanisms are arranged crosswise and in an "X" shape, each of the transmission mechanisms comprises two transmission members, and the four transmission members are respectively located at the four corners of the pedal frame; Each of the transmission members comprises an upper connecting frame fixed on the step frame and a lower connecting frame fixed on the bracket, a pull rope is provided on the upper connecting frame, an upper guide member and a lower guide member are fixed on the lower connecting frame, and the pull rope passes around the lower guide member; in the same transmission mechanism, the pull rope on any transmission member passes around the upper guide member on another transmission member and is fixed on the upper connecting frame of the other transmission member; Each of the upper connecting frames is L-shaped and has a connecting portion. In the same transmission member, a second screw hole is provided on the connecting portion, a connecting column is threadedly connected to the second screw hole, a step hole is provided in the connecting column, a limiting platform is provided in the step hole, a limiting plate is rotatably connected in the step hole, the limiting plate abuts against the limiting platform, and the pull rope is inserted into the step hole and fixedly connected to the limiting plate.

2. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 1 is characterized in that: The pedal frame includes a frame body, and through holes are opened at the four corners of the frame body. A guide sleeve is fixedly provided at the bottom of each through hole. The number of the guide structures is four, and the inner sides of the four guide sleeves are slidably connected to the four guide structures respectively.

3. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 2 is characterized in that: The guide structure includes a seat plate fixed on the bracket, a guide column fixed on the seat plate, the guide column is slidably connected to the inner side of the guide sleeve, a lower adjustment plate is slidably connected to the guide column with a single degree of freedom, an adjustment driving mechanism is provided between the lower adjustment plate and the guide column to drive the lower adjustment plate to move up and down, a limiting plate located directly above the lower adjustment plate is detachably mounted on the guide column, the lower surface of the limiting plate is press-fitted with the top surface of the guide sleeve, and an elastic member is abutted between the lower adjustment plate and the guide sleeve.

4. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 3 is characterized in that: The guide column is provided with two limiting grooves which are parallel to each other, and the lower adjustment plate is slidably connected to the two limiting grooves.

5. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 3 is characterized in that: A first screw hole is provided at the top of the guide column, a bolt is threadedly connected to the first screw hole, the limiting plate is sleeved on the bolt, and the bolt head of the bolt is crimped against the upper surface of the limiting plate, and adjustment holes are provided at the four corners of the pedal, and the four adjustment holes are respectively corresponding to the four bolts.

6. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 3 is characterized in that: The adjustment drive mechanism comprises an external thread section provided on the guide column, a rotating sleeve is threadedly connected to the external thread section, and the top of the rotating sleeve contacts the bottom of the lower adjustment plate.

7. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 6 is characterized in that: The rotating sleeve includes a driving swivel, an inner side of which is provided with an internal thread section threadedly connected to an external thread section, an outer surface of the driving swivel is provided with anti-slip grooves, and at least two balls are rollingly connected to the top of the driving swivel, and each of the balls is rollingly connected to the bottom surface of the lower adjustment plate.

8. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 1, characterized in that: The upper guide member includes an upper pulley seat, on which an upper pulley is rotatably connected; the lower guide member includes a lower pulley seat, on which a lower pulley is rotatably connected; and both the upper pulley and the lower pulley are provided with grooves that overlap with the pull rope.

9. The safety maintenance platform based on the mold clamping area of ​​the injection molding machine according to claim 8, characterized in that: In the same transmission member, the connecting portion is located between the upper pulley and the lower pulley.

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