Double-wall corrugated pipe forming die protection mechanism and forming machine

Abstract

The utility model belongs to double -walled bellows forming machine technical field especially relates to a kind of double -walled bellows forming die protection mechanism and forming machine;Double -walled bellows forming die protection mechanism includes chassis, and is set to the front slide rail structure, middle slide rail structure and rear slide rail structure of chassis, first front sliding frame, second front sliding frame are slidably installed in front slide rail structure, first middle sliding frame, second middle sliding frame are slidably installed in middle slide rail structure, first rear sliding frame, second rear sliding frame are slidably installed in rear slide rail structure, first adjusting mechanism is set between first front sliding frame and second front sliding frame, first middle sliding frame and second middle sliding frame are set between, and the double output speed reducer of first adjusting mechanism, second adjusting mechanism transmission connection, and servo motor;Double -walled bellows forming machine includes double -walled bellows forming die protection mechanism;Solved the problem that the moulding force of existing double -walled bellows forming machine is too big and is easily damaged moulding platform.

Description

Technical Field

[0001] This utility model belongs to the technical field of double-wall corrugated pipe forming machine, and particularly relates to a protective mechanism for a double-wall corrugated pipe forming mold and a forming machine. Background Technology

[0002] The double-wall corrugated pipe forming machine is an important component of the double-wall corrugated pipe production line. The existing double-wall corrugated pipe forming machine is equipped with two sets of mold running platforms located on the left and right sides. Each set of mold running platforms is equipped with multiple sliding seats that slide along a circular running track and forming modules fixed to the sliding seats. The forming modules of the two sets of mold running platforms are set one-to-one. When the forming modules on the adjacent sides of the two sets of mold running platforms are closed, the outer cylindrical material blank extruded by the extruder can be injection molded to form the outer corrugated pipe wall of the double-wall corrugated pipe. The outer pipe wall is then pressed together with the inner pipe wall formed by the inner cylindrical material extruded by the extruder, thereby processing and forming the double-wall corrugated pipe.

[0003] During production, the mold closing between the corresponding forming modules on the adjacent sides of the two sets of mold running platforms is crucial for the forming of double-wall corrugated pipes. Since the two sets of mold running platforms are fixed to the base frame, there are often cases where the clamping force between the corresponding forming modules on the adjacent sides of the two sets of mold running platforms is too large. This aggravates the wear between the sliding seat and the annular running track of the mold running platform. In severe cases, it can also squeeze and deform the forming module, causing damage to the mold running platform. This not only reduces the service life of the mold running platform, but also affects the yield of double-wall corrugated pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a protective mechanism for a double-wall corrugated pipe forming mold, which aims to solve the problem that the excessive clamping force of the existing double-wall corrugated pipe forming machine can easily damage the mold running platform, thereby improving the service life of the mold running platform and increasing the yield of double-wall corrugated pipes.

[0005] This utility model discloses a protective mechanism for a double-wall corrugated pipe forming mold, applied to a double-wall corrugated pipe forming machine. The protective mechanism includes a base frame, on which a front slide rail structure, a middle slide rail structure, and a rear slide rail structure are fixedly arranged in parallel and spaced apart in the front-rear direction. It also includes:

[0006] The system includes a first front sliding frame and a second front sliding frame slidably mounted on the front slide rail structure, a first middle sliding frame and a second middle sliding frame slidably mounted on the middle slide rail structure, a first rear sliding frame and a second rear sliding frame slidably mounted on the rear slide rail structure, a first adjustment mechanism disposed between the front slide rail structure and the middle slide rail structure, a second adjustment mechanism disposed between the middle slide rail structure and the rear slide rail structure, a dual-output reducer disposed between the first adjustment mechanism and the second adjustment mechanism and respectively drivenly connected to the first adjustment mechanism and the second adjustment mechanism, and a servo motor drivenly connected to the dual-output reducer.

[0007] The first adjustment mechanism is connected between the first front sliding frame and the second front sliding frame, and the second adjustment mechanism is connected between the first middle sliding frame and the second middle sliding frame; or the first adjustment mechanism is connected between the first front sliding frame and the second front sliding frame, and the second adjustment mechanism is connected between the first rear sliding frame and the second rear sliding frame; or the first adjustment mechanism is connected between the first middle sliding frame and the second middle sliding frame, and the second adjustment mechanism is connected between the first rear sliding frame and the second rear sliding frame. The first adjustment mechanism and the second adjustment mechanism are used to drive the first front sliding frame and the second front sliding frame, the first middle sliding frame and the second middle sliding frame, and the first rear sliding frame and the second rear sliding frame to slide relative to each other in the approaching / away direction.

[0008] As an improvement, the first adjustment mechanism and the second adjustment mechanism each include a steering box fixed to the base frame, a first lead screw and nut mechanism and a second lead screw and nut mechanism disposed on opposite sides of the steering box and rotatably mounted on the base frame, the screws of the first lead screw and nut mechanism and the second lead screw and nut mechanism having opposite helical directions and being fixedly connected to the output shaft of the steering box on the corresponding side, and transmission shafts connecting the two coaxially arranged output shafts of the dual-output reducer to the input shaft of the steering box of the first adjustment mechanism and the input shaft of the steering box of the second adjustment mechanism, respectively.

[0009] As an improvement, the distance between the middle slide rail structure and the rear slide rail structure is smaller than the distance between the middle slide rail structure and the front slide rail structure; the first adjustment mechanism is disposed on the side of the front slide rail structure close to the middle slide rail structure, the nut slider of the first lead screw nut mechanism of the first adjustment mechanism is fixedly connected to the first front sliding frame, and the nut slider of the second lead screw nut mechanism is fixedly connected to the second front sliding frame; the second adjustment mechanism is disposed close to the middle slide rail structure, the nut slider of the first lead screw nut mechanism of the second adjustment mechanism is fixedly connected to the first middle sliding frame, and the nut slider of the second lead screw nut mechanism is fixedly connected to the second middle sliding frame.

[0010] As an improvement, the front slide rail structure and the rear slide rail structure are configured as a guide rail slider mechanism. The guide rail slider mechanism includes a guide rail fixed to the base frame, and a first slider structure and a second slider structure slidably mounted on the guide rail. The first slider structure and the second slider structure of the front slide rail structure are fixedly connected to the first front sliding frame and the second front sliding frame, respectively. The first slider structure and the second slider structure of the rear slide rail structure are fixedly connected to the first rear sliding frame and the second rear sliding frame, respectively.

[0011] As an improvement, the middle sliding rail structure is a flat plate fixed to the base frame, and roller mechanisms are respectively provided at the bottom of the first middle sliding frame and the second middle sliding frame.

[0012] As an improvement, the guide rail is configured as a split structure, including a first guide rail body and a second guide rail body, the first guide rail body and the second guide rail body are arranged opposite each other, the first slider structure is slidably mounted on the first guide rail body, and the second slider structure is slidably mounted on the second guide rail body.

[0013] As an improvement, the dual-output reducer is located in the middle between the first adjustment mechanism and the second adjustment mechanism.

[0014] As an improvement, the double-walled corrugated pipe forming mold protection mechanism also includes a mold closing force detection structure.

[0015] As an improvement, the mold clamping force detection structure is a torque detection module installed inside the servo motor; or, the mold clamping force detection structure is a torque detection sensor installed between the output shaft of the servo motor and the input shaft of the dual-output reducer; or, the mold clamping force detection structure is a pressure sensor installed between a set of forming molds corresponding to the first mold running platform and the second mold running platform of the double-wall corrugated pipe forming machine.

[0016] The beneficial effects achieved by adopting the above technical solution are as follows:

[0017] The protective mechanism for the double-wall corrugated pipe forming mold of this utility model includes a base frame, on which a front slide rail structure, a middle slide rail structure, and a rear slide rail structure are fixed in parallel and spaced apart in the front-to-back direction. It also includes:

[0018] The system includes a first front sliding frame and a second front sliding frame that are slidably installed on the front slide rail structure, a first middle sliding frame and a second middle sliding frame that are slidably installed on the middle slide rail structure, a first rear sliding frame and a second rear sliding frame that are slidably installed on the rear slide rail structure, a first adjustment mechanism that is disposed between the front slide rail structure and the middle slide rail structure, a second adjustment mechanism that is disposed between the middle slide rail structure and the rear slide rail structure, a dual-output reducer that is disposed between the first adjustment mechanism and the second adjustment mechanism and is respectively drivenly connected to the first adjustment mechanism and the second adjustment mechanism, and a servo motor that is drivenly connected to the dual-output reducer.

[0019] The first adjustment mechanism is connected between the first front sliding frame and the second front sliding frame, and the second adjustment mechanism is connected between the first middle sliding frame and the second middle sliding frame; or the first adjustment mechanism is connected between the first front sliding frame and the second front sliding frame, and the second adjustment mechanism is connected between the first rear sliding frame and the second rear sliding frame; or the first adjustment mechanism is connected between the first middle sliding frame and the second middle sliding frame, and the second adjustment mechanism is connected between the first rear sliding frame and the second rear sliding frame; the first adjustment mechanism and the second adjustment mechanism are used to drive the first front sliding frame and the second front sliding frame, the first middle sliding frame and the second middle sliding frame, and the first rear sliding frame and the second rear sliding frame to slide relative to each other in the approaching / away direction.

[0020] The double-wall corrugated pipe forming machine of this utility model includes a first mold running platform, a second mold running platform, and a double-wall corrugated pipe forming mold protection mechanism. The first mold running platform is fixed above the first front sliding frame, the first middle sliding frame, and the first rear sliding frame, and the second mold running platform is fixed above the second front sliding frame, the second middle sliding frame, and the second rear sliding frame.

[0021] During adjustment, the servo motor drives the first and second adjustment mechanisms via a dual-output reducer. These mechanisms drive relative sliding between the first and second front sliding frames, the first and second middle sliding frames, and the first and second rear sliding frames in a nearing / faring direction. This allows adjustment of the distance between the first mold running platform fixed above the first, second, and third sliding frames and the second mold running platform fixed above the second, third, and fourth sliding frames. After the molding mold on the adjacent side of the second mold running platform is attached, the servo motor continues to fine-tune the position of the first mold running platform and the second mold running platform, so that pressure is generated between the first mold running platform and the second mold running platform. The pressure between the first mold running platform and the second mold running platform forms the mold closing force. During the production process, the mold closing force between the first mold running platform and the second mold running platform can be adjusted by adjusting the servo motor. In addition, the self-locking performance of the servo motor can lock the first mold running platform and the second mold running platform at the adjusted position, thereby maintaining the mold closing force between the first mold running platform and the second mold running platform.

[0022] During production, the clamping force between the two sets of mold running platforms can be adjusted in real time, which solves the problem that the excessive clamping force of the existing double-wall corrugated pipe forming machine can easily damage the mold running platform. This can improve the service life of the mold running platform and increase the yield of double-wall corrugated pipes. Attached Figure Description

[0023] Figure 1 This is a top view schematic diagram of the protective mechanism for the double-wall corrugated pipe forming mold of this utility model;

[0024] Figure 2 This is a side view of the protective mechanism for the double-walled corrugated pipe forming mold of this utility model.

[0025] Among them, 10 is the base frame; 11 is the front slide rail structure; 12 is the middle slide rail structure; 13 is the rear slide rail structure; 20a is the first front sliding frame; 20b is the second front sliding frame; 30a is the first middle sliding frame; 30b is the second middle sliding frame; 40a is the first middle sliding frame; 40b is the second middle sliding frame; 50 is the dual-output reducer; 60 is the servo motor; 70a is the first adjustment mechanism; 70b is the second adjustment mechanism; 71 is the steering box; 72 is the first lead screw and nut mechanism; 73 is the second lead screw and nut mechanism; 80a is the first mold running platform; 80b is the second mold running platform. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] Figure 1 and Figure 2 This is a schematic diagram of the protective mechanism for the double-wall corrugated pipe forming mold of this utility model, wherein, Figure 1 This diagram shows a top view of the protective mechanism for the double-walled corrugated pipe forming mold of this utility model. Figure 2 The diagram shows a side view of the protective mechanism for the double-walled corrugated pipe forming mold of this invention. For ease of description, only the parts relevant to this invention are shown in the diagram.

[0028] It should be noted that if the present invention involves directional indicators, such as up, down, front, back, left, right, etc., the directional indicators are only used to explain the relative positional relationship between the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. If the present invention involves descriptions such as "first", "second", etc., the descriptions such as "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0029] like Figure 1 and Figure 2 As shown, this utility model discloses a protective mechanism for a double-wall corrugated pipe forming mold, which is applied to a double-wall corrugated pipe forming machine. It is generally understood that the production direction of the double-wall corrugated pipe production line is from front to back.

[0030] The protective mechanism for the double-wall corrugated pipe forming mold of this utility model includes a base frame 10, on which a front slide rail structure 11, a middle slide rail structure 12, and a rear slide rail structure 13 are fixedly arranged at intervals along the front-to-back direction. The front slide rail structure 11, the middle slide rail structure 12, and the rear slide rail structure 13 are arranged in parallel. It also includes:

[0031] The system includes a first front sliding frame 20a and a second front sliding frame 20b respectively slidably mounted on the front slide rail structure 11, a first middle sliding frame 30a and a second middle sliding frame 30b respectively slidably mounted on the middle slide rail structure 12, a first rear sliding frame 40a and a second rear sliding frame 40b respectively slidably mounted on the rear slide rail structure 13, a first adjusting mechanism 70a disposed between the front slide rail structure 11 and the middle slide rail structure 12, a second adjusting mechanism 70b disposed between the middle slide rail structure 12 and the rear slide rail structure 13, a dual-output reducer 50 disposed between the first adjusting mechanism 70a and the second adjusting mechanism 70b and respectively drivingly connected to the first adjusting mechanism 70a and the second adjusting mechanism 70b, and a servo motor 60 drivingly connected to the dual-output reducer 50.

[0032] The first adjustment mechanism 70a is connected between the first front sliding frame 20a and the second front sliding frame 20b, and the second adjustment mechanism 70b is connected between the first middle sliding frame 30a and the second middle sliding frame 30b; or the first adjustment mechanism 70a is connected between the first front sliding frame 20a and the second front sliding frame 20b, and the second adjustment mechanism 70b is connected between the first rear sliding frame 40a and the second rear sliding frame 40b; or the first adjustment mechanism 70a is connected between the first middle sliding frame 30a and the second middle sliding frame 30b, and the second adjustment mechanism 70b is connected between the first rear sliding frame 40a and the second rear sliding frame 40b; the first adjustment mechanism 70a and the second adjustment mechanism 70b are used to drive the first front sliding frame 20a and the second front sliding frame 20b, the first middle sliding frame 30a and the second middle sliding frame 30b, and the first rear sliding frame 40a and the second rear sliding frame 40b to slide relative to each other in the approaching / away direction.

[0033] During installation, the first mold running platform 80a of the double-wall corrugated pipe forming machine is set above the first front sliding frame 20a, the first middle sliding frame 30a, and the first rear sliding frame 40a and is fixedly connected to the first front sliding frame 20a, the first middle sliding frame 30a, and the first rear sliding frame 40a respectively. The second mold running platform 80b is set above the second front sliding frame 20b, the second middle sliding frame 30b, and the second rear sliding frame 40b and is fixedly connected to the second front sliding frame 20b, the second middle sliding frame 30b, and the second rear sliding frame 40b respectively.

[0034] During adjustment, the servo motor 60 drives the first adjustment mechanism 70a and the second adjustment mechanism 70b through the dual-output reducer 50. The first adjustment mechanism 70a and the second adjustment mechanism 70b drive relative sliding in the approaching / away direction between the first front sliding frame 20a and the second front sliding frame 20b, between the first middle sliding frame 30a and the second middle sliding frame 30b, and between the first rear sliding frame 40a and the second rear sliding frame 40b. The distance between the first mold running platform 80a, which is fixed above the first front sliding frame 20a, the first middle sliding frame 30a, and the first rear sliding frame 40a, and the second mold running platform 80b, which is fixed above the second front sliding frame 20b, the second middle sliding frame 30b, and the second rear sliding frame 40b, can be adjusted by the first adjustment mechanism 70a and the second adjustment mechanism 70b. After the molding molds on the adjacent sides of the first mold running platform 80a and the second mold running platform 80b are fitted together, the servo motor 60 continues to fine-tune the positions of the first mold running platform 80a and the second mold running platform 80b, so that pressure is generated between the first mold running platform 80a and the second mold running platform 80b. The pressure between the first mold running platform 80a and the second mold running platform 80b forms the mold closing force. During the production process, the mold closing force between the first mold running platform 80a and the second mold running platform 80b can be adjusted by adjusting the servo motor 60. In addition, the self-locking performance of the servo motor 60 can lock the first mold running platform 80a and the second mold running platform 80b at the adjusted position, thereby maintaining the mold closing force between the first mold running platform 80a and the second mold running platform 80b.

[0035] The protective mechanism for the double-wall corrugated pipe forming mold of this utility model can adjust the clamping force between the two sets of mold running platforms in real time, which solves the problem that the excessive clamping force of the existing double-wall corrugated pipe forming machine can easily damage the mold running platform. It can improve the service life of the mold running platform and increase the yield of double-wall corrugated pipe.

[0036] In this utility model, the first adjustment mechanism 70a and the second adjustment mechanism 70b each include a steering box 71 fixed to the base frame 10, a first lead screw nut mechanism 72 and a second lead screw nut mechanism 73 respectively disposed on opposite sides of the steering box 71 and rotatably mounted on the base frame 10. The lead screws of the first lead screw nut mechanism 72 and the second lead screw nut mechanism 73 are respectively fixedly connected to the output shaft of the steering box 71 on the corresponding side, and the spiral directions of the lead screws of the first lead screw nut mechanism 72 and the second lead screw nut mechanism 73 are opposite. A transmission shaft is connected between the two coaxially arranged output shafts of the dual output reducer 50 and the input shafts of the steering box 71 of the first adjustment mechanism 70a and the steering box 71 of the second adjustment mechanism 70b.

[0037] During adjustment, the servo motor 60 drives the input shafts of the steering box 71 of the first adjustment mechanism 70a and the steering box 71 of the second adjustment mechanism 70b to rotate synchronously via the dual-output reducer 50. The steering box 71 of the first adjustment mechanism 70a can simultaneously drive the lead screws of the first lead screw and nut mechanism 72 and the second lead screw and nut mechanism 73 of the first adjustment mechanism 70a to rotate in the same direction. The steering box 71 of the second adjustment mechanism 70b can simultaneously drive the lead screws of the first lead screw and nut mechanism 72 and the second lead screw and nut mechanism 73 of the second adjustment mechanism 70b to rotate in the same direction. Since the screws of the first lead screw and nut mechanism 72 and the second lead screw and nut mechanism 73 have opposite helical directions, the nut sliders of the first lead screw and nut mechanism 72 and the nut sliders of the second lead screw and nut mechanism 73 can slide synchronously in the approaching / away direction. The distance between the first mold running platform 80a and the second mold running platform 80b can be adjusted by the first adjustment mechanism 70a and the second adjustment mechanism 70b.

[0038] Specifically, the distance between the middle slide rail structure 12 and the rear slide rail structure 13 is less than the distance between the middle slide rail structure 12 and the front slide rail structure 11. The middle slide rail structure 12 is located on the side closer to the rear slide rail structure 13. The first adjustment mechanism 70a is located on the side of the front slide rail structure 11 closer to the middle slide rail structure 12. The nut slider of the first lead screw nut mechanism 72 of the first adjustment mechanism 70a is fixedly connected to the first front sliding frame 20a, and the nut slider of the second lead screw nut mechanism 73 is fixedly connected to the second front sliding frame 20b. The second adjustment mechanism 70b is located close to the middle slide rail structure 12. The nut slider of the first lead screw nut mechanism 72 of the second adjustment mechanism 70b is fixedly connected to the first middle sliding frame 30a, and the nut slider of the second lead screw nut mechanism 73 is fixedly connected to the second middle sliding frame 30b.

[0039] Of course, the first adjusting mechanism 70a and the second adjusting mechanism 70b can also be connected in the following ways: the nut slider of the first lead screw nut mechanism 72 of the first adjusting mechanism 70a is fixedly connected to the first middle sliding frame 30a, and the nut slider of the second lead screw nut mechanism 73 is fixedly connected to the second middle sliding frame 30b; the nut slider of the first lead screw nut mechanism 72 of the second adjusting mechanism 70b is fixedly connected to the first rear sliding frame 40a, and the nut slider of the second lead screw nut mechanism 73 is fixedly connected to the second rear sliding frame 40b; or, the nut slider of the first lead screw nut mechanism 72 of the first adjusting mechanism 70a is fixedly connected to the first front sliding frame 20a, and the nut slider of the second lead screw nut mechanism 73 is fixedly connected to the second front sliding frame 20b; the nut slider of the first lead screw nut mechanism 72 of the second adjusting mechanism 70b is fixedly connected to the first rear sliding frame 40a, and the nut slider of the second lead screw nut mechanism 73 is fixedly connected to the second rear sliding frame 40b.

[0040] In some other embodiments, the first adjusting mechanism 70a and the second adjusting mechanism 70b may also be configured as follows: a long lead screw rotatably mounted on the base frame 10, the long lead screw having a first threaded portion and a second threaded portion with opposite helical directions; a first nut slider and a second nut slider respectively mounted on the first threaded portion and the second threaded portion; and a turbine fixedly mounted on the long lead screw and disposed between the first threaded portion and the second threaded portion; a first drive shaft and a second drive shaft rotatably mounted on the base frame 10 are respectively provided between the two coaxially arranged output shafts of the dual-output reducer 50 and the first adjusting mechanism 70a and the second adjusting mechanism 70b; the first drive shaft and the second drive shaft are respectively fixedly connected to the two coaxially arranged output shafts of the dual-output reducer 50; the first drive shaft has a first helical tooth portion that meshes with the turbine of the first adjusting mechanism 70a; and the second drive shaft has a second helical tooth portion that meshes with the turbine of the second adjusting mechanism 70b; the helical directions of the first helical tooth portion and the second helical tooth portion are the same.

[0041] In this invention, the front slide rail structure 11 and the rear slide rail structure 13 are configured as guide rail slider mechanisms. Each guide rail slider mechanism includes a guide rail fixed to the base frame 10, and a first slider structure and a second slider structure slidably mounted on the guide rail. The first slider structure and the second slider structure of the front slide rail structure 11 are fixedly connected to the first front sliding frame 20a and the second front sliding frame 20b, respectively. The first slider structure and the second slider structure of the rear slide rail structure 13 are fixedly connected to the first rear sliding frame 40a and the second rear sliding frame 40b, respectively. Typically, the first slider structure and the second slider structure each include at least two sliders, which enhances the connection performance.

[0042] The middle slide rail structure 12 is a flat plate fixed to the base frame 10. Roller mechanisms are respectively provided at the bottom of the first middle slide frame 30a and the second middle slide frame 30b. The first middle slide frame 30a and the second middle slide frame 30b are supported at the middle of the first mold running platform 80a and the second mold running platform 80b, respectively, and play a supporting role. The front slide rail structure 11 and the rear slide rail structure 13 play a guiding role. Of course, the middle slide rail structure 12 can also be set as a guide rail slider mechanism.

[0043] Furthermore, the dual-output reducer 50 is positioned in the middle between the first adjusting mechanism 70a and the second adjusting mechanism 70b. This allows for a more balanced force distribution between the first front sliding frame 20a and the second front sliding frame 20b, between the first middle sliding frame 30a and the second middle sliding frame 30b, and between the first rear sliding frame 40a and the second rear sliding frame 40b, thus preventing misalignment between the first mold running platform 80a and the second mold running platform 80b.

[0044] In other embodiments, the guide rail is configured as a split structure, including a first guide rail body and a second guide rail body, which are positioned opposite each other. A first slider structure is slidably mounted on the first guide rail body, and a second slider structure is slidably mounted on the second guide rail body. This split structure reduces processing difficulty, facilitates installation, and lowers production costs.

[0045] In this utility model, bearing seats are provided at both ends of the first lead screw nut mechanism 72 and the second lead screw nut mechanism 73, and the lead screw is rotatably connected to the two bearing seats respectively.

[0046] In this utility model, the protective mechanism for the double-wall corrugated pipe forming mold also includes a mold closing force detection structure, which is electrically connected to the electrical control device of the double-wall corrugated pipe production line.

[0047] During production, when the clamping force detection structure detects that the clamping force is greater than the set value, the servo motor 60, the dual-output reducer 50, the first adjustment mechanism 70a, and the second adjustment mechanism 70b are used to make a micro-adjustment in the direction away from the first mold running platform 80a and the second mold running platform 80b, thereby reducing the clamping force between the first mold running platform 80a and the second mold running platform 80b. When the clamping force detection structure detects that the clamping force is less than the set value, the servo motor 60, the dual-output reducer 50, the first adjustment mechanism 70a, and the second adjustment mechanism 70b are used to make a micro-adjustment in the direction closer to the first mold running platform 80a and the second mold running platform 80b, thereby increasing the clamping force between the first mold running platform 80a and the second mold running platform 80b.

[0048] Specifically, the mold clamping force detection structure is a torque detection module installed inside the servo motor 60. The mold clamping force between the first mold running platform 80a and the second mold running platform 80b is determined by detecting the output torque of the servo motor 60.

[0049] In some other embodiments, the clamping force detection structure is a torque detection sensor disposed between the output shaft of the servo motor 60 and the input shaft of the dual-output reducer 50.

[0050] Of course, the clamping force detection structure can also be set as a pressure sensor, which is set between a set of molding molds corresponding to the first mold running platform 80a and the second mold running platform 80b, and can directly detect the clamping force between the first mold running platform 80a and the second mold running platform 80b.

[0051] This utility model also discloses a double-wall corrugated pipe forming machine, which includes a first mold running platform 80a, a second mold running platform 80b, and the aforementioned double-wall corrugated pipe forming mold protection mechanism. The first mold running platform 80a is disposed above the first front sliding frame 20a, the first middle sliding frame 30a, and the first rear sliding frame 40a and is fixedly connected to the first front sliding frame 20a, the first middle sliding frame 30a, and the first rear sliding frame 40a, respectively. The second mold running platform 80b is disposed above the second front sliding frame 20b, the second middle sliding frame 30b, and the second rear sliding frame 40b and is fixedly connected to the second front sliding frame 20b, the second middle sliding frame 30b, and the second rear sliding frame 40b, respectively.

[0052] During production, the clamping force between the first mold running platform 80a and the second mold running platform 80b of the double-wall corrugated pipe forming machine can be adjusted by the servo motor 60. When the clamping force detection structure detects that the clamping force is greater than the set value, the servo motor 60, the dual-output reducer 50, the first adjustment mechanism 70a, and the second adjustment mechanism 70b are used to make a micro-adjustment in the away direction between the first mold running platform 80a and the second mold running platform 80b, thereby reducing the clamping force between the first mold running platform 80a and the second mold running platform 80b. When the clamping force detection structure detects that the clamping force is less than the set value, the servo motor 60, the dual-output reducer 50, the first adjustment mechanism 70a, and the second adjustment mechanism 70b are used to make a micro-adjustment in the away direction between the first mold running platform 80a and the second mold running platform 80b. The joint mechanism 70a and the second adjustment mechanism 70b make a micro-adjustment in the approach direction between the first mold running platform 80a and the second mold running platform 80b, thereby increasing the mold closing force between the first mold running platform 80a and the second mold running platform 80b. This avoids excessive mold closing force between the first mold running platform 80a and the second mold running platform 80b, which would aggravate the wear between the sliding seats of the first mold running platform 80a and the second mold running platform 80b and the annular running track. At the same time, it can also avoid excessive mold closing force causing the molding module to be squeezed and deformed. This can improve the service life of the first mold running platform 80a and the second mold running platform 80b and improve the yield of double-wall corrugated pipes.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective mechanism for a double-wall corrugated pipe forming mold, applied to a double-wall corrugated pipe forming machine, comprising a base frame, characterized in that, The base frame is fixed with a front slide rail structure, a middle slide rail structure, and a rear slide rail structure that are arranged in parallel and spaced apart in the front-to-back direction, and also includes: The system includes a first front sliding frame and a second front sliding frame slidably mounted on the front slide rail structure, a first middle sliding frame and a second middle sliding frame slidably mounted on the middle slide rail structure, a first rear sliding frame and a second rear sliding frame slidably mounted on the rear slide rail structure, a first adjustment mechanism disposed between the front slide rail structure and the middle slide rail structure, a second adjustment mechanism disposed between the middle slide rail structure and the rear slide rail structure, a dual-output reducer disposed between the first adjustment mechanism and the second adjustment mechanism and respectively drivenly connected to the first adjustment mechanism and the second adjustment mechanism, and a servo motor drivenly connected to the dual-output reducer. The first adjustment mechanism is connected between the first front sliding frame and the second front sliding frame, and the second adjustment mechanism is connected between the first middle sliding frame and the second middle sliding frame; or the first adjustment mechanism is connected between the first front sliding frame and the second front sliding frame, and the second adjustment mechanism is connected between the first rear sliding frame and the second rear sliding frame; or the first adjustment mechanism is connected between the first middle sliding frame and the second middle sliding frame, and the second adjustment mechanism is connected between the first rear sliding frame and the second rear sliding frame. The first adjustment mechanism and the second adjustment mechanism are used to drive the first front sliding frame and the second front sliding frame, the first middle sliding frame and the second middle sliding frame, and the first rear sliding frame and the second rear sliding frame to slide relative to each other in the approaching / away direction.

2. The protective mechanism for the double-wall corrugated pipe forming mold according to claim 1, characterized in that, The first adjustment mechanism and the second adjustment mechanism each include a steering box fixed to the base frame, a first lead screw and nut mechanism and a second lead screw and nut mechanism respectively disposed on opposite sides of the steering box and rotatably mounted on the base frame. The screws of the first lead screw and nut mechanism and the second lead screw and nut mechanism have opposite helical directions and are respectively fixedly connected to the output shaft of the steering box on the corresponding side. A transmission shaft is respectively connected between the two coaxially arranged output shafts of the dual output reducer and the input shaft of the steering box of the first adjustment mechanism and the input shaft of the steering box of the second adjustment mechanism.

3. The protective mechanism for the double-wall corrugated pipe forming mold according to claim 2, characterized in that, The distance between the middle slide rail structure and the rear slide rail structure is less than the distance between the middle slide rail structure and the front slide rail structure; the first adjustment mechanism is disposed on the side of the front slide rail structure close to the middle slide rail structure, the nut slider of the first lead screw nut mechanism of the first adjustment mechanism is fixedly connected to the first front sliding frame, and the nut slider of the second lead screw nut mechanism is fixedly connected to the second front sliding frame; the second adjustment mechanism is disposed close to the middle slide rail structure, the nut slider of the first lead screw nut mechanism of the second adjustment mechanism is fixedly connected to the first middle sliding frame, and the nut slider of the second lead screw nut mechanism is fixedly connected to the second middle sliding frame.

4. The protective mechanism for the double-wall corrugated pipe forming mold according to claim 1, characterized in that, The front slide rail structure and the rear slide rail structure are configured as guide rail slider mechanisms. The guide rail slider mechanism includes a guide rail fixed to the base frame, and a first slider structure and a second slider structure slidably mounted on the guide rail. The first slider structure and the second slider structure of the front slide rail structure are fixedly connected to the first front sliding frame and the second front sliding frame, respectively. The first slider structure and the second slider structure of the rear slide rail structure are fixedly connected to the first rear sliding frame and the second rear sliding frame, respectively.

5. The protective mechanism for the double-wall corrugated pipe forming mold according to claim 4, characterized in that, The middle slide rail structure is a flat plate fixed to the base frame, and roller mechanisms are respectively provided at the bottom of the first middle slide frame and the second middle slide frame.

6. The protective mechanism for the double-wall corrugated pipe forming mold according to claim 4, characterized in that, The guide rail is configured as a split structure, including a first guide rail body and a second guide rail body. The first guide rail body and the second guide rail body are arranged opposite each other. The first slider structure is slidably installed on the first guide rail body, and the second slider structure is slidably installed on the second guide rail body.

7. The protective mechanism for the double-walled corrugated pipe forming mold according to claim 1, characterized in that, The dual-output reducer is located in the middle between the first adjustment mechanism and the second adjustment mechanism.

8. The protective mechanism for a double-walled corrugated pipe forming mold according to any one of claims 1 to 7, characterized in that, The protective mechanism for the double-wall corrugated pipe forming mold also includes a mold closing force detection structure.

9. The protective mechanism for the double-wall corrugated pipe forming mold according to claim 8, characterized in that, The clamping force detection structure is a torque detection module installed inside the servo motor; or, the clamping force detection structure is a torque detection sensor installed between the output shaft of the servo motor and the input shaft of the dual-output reducer; or, the clamping force detection structure is a pressure sensor installed between a set of forming molds corresponding to the first mold running platform and the second mold running platform of the double-wall corrugated pipe forming machine.

10. A double-wall corrugated pipe forming machine, comprising a first mold running platform and a second mold running platform, characterized in that, It also includes a double-wall corrugated pipe forming mold protection mechanism as described in any one of claims 1 to 9, wherein the first mold running platform is fixed above the first front sliding frame, the first middle sliding frame, and the first rear sliding frame, and the second mold running platform is fixed above the second front sliding frame, the second middle sliding frame, and the second rear sliding frame.

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