An automatic adjustment device for the die lip gap of an extrusion mold in a waterproof membrane production line.

Abstract

This invention discloses an automatic adjustment device for the die lip gap of an extrusion mold in a waterproof membrane production line. The device includes a guide rail frame, a gap-adjusting robotic arm, and a distance measuring device. The guide rail frame includes two support seats on the mold, a transmission guide rail between the support seats, and a drive mechanism on one support seat that drives the transmission guide rail. The gap-adjusting robotic arm includes a connecting seat that mates with the transmission guide rail, a height-adjusting mechanism on the connecting seat, and a screw-rotating adjustment mechanism on the height-adjusting mechanism. The distance measuring device is located on the connecting seat and is used to measure the die lip gap. This invention can automatically adjust the size of the die head outlet gap without manual operation, resulting in high adjustment efficiency and cost savings.

Description

Technical Field

[0001] This invention belongs to the field of waterproof membrane production and processing technology, specifically relating to an automatic adjustment device for the die lip gap of an extrusion mold in a waterproof membrane production line. Background Technology

[0002] During the production of waterproof membrane in the workshop, its thickness can only be controlled manually by adjusting the distance between the pressure rollers and the size of the die head outlet. In actual production, it was found that manual adjustment is difficult to achieve the specified thickness in one go, and the process is cumbersome, time-consuming, and labor-intensive. Furthermore, workers are exposed to high temperatures during manual adjustment, posing certain safety risks. Products produced before the thickness is properly adjusted must be scrapped, significantly increasing production costs. During production, technicians also need to continuously fine-tune the size of the die head outlet to ensure stable waterproof membrane thickness, further increasing the workload.

[0003] There is a lack of a device in the existing technology that can automatically adjust the size of the die head outlet. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic adjustment device for the die lip gap of an extrusion die in a waterproof membrane production line. This device can automatically adjust the size of the die head outlet gap without manual operation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An automatic adjustment device for the die lip gap of an extrusion mold in a waterproof membrane production line includes:

[0007] The guide rail frame includes two support seats on the mold, a transmission guide rail between the support seats, and a drive mechanism on one of the support seats that drives the transmission guide rail.

[0008] A gap-adjusting robotic arm includes a connecting seat that mates with a transmission guide rail, a height-adjusting mechanism mounted on the connecting seat, and a screw-rotating adjustment mechanism mounted on the height-adjusting mechanism; and

[0009] The ranging device, which is mounted on the connecting seat, is used to measure the gap between the die lips.

[0010] Furthermore, the screw rotation adjustment mechanism includes a longitudinally arranged slide plate, a first motor located on one side of the slide plate, a support plate located on the other side of the slide plate, and a rotating head hinged to the support plate; both the output end of the first motor and the rotating head are provided with pulleys, and a synchronous belt is connected between the pulleys.

[0011] Furthermore, the rotating head includes two axially fixed cylinders arranged side by side and hinged to the support plate, a T-shaped shaft that is only slidably engaged with the axially fixed cylinders, a return spring sleeved on the T-shaped shaft and connected between the T-shaped shaft and the axially fixed cylinders, a servo motor mounted on the support plate, and a swing arm mounted on the servo motor output shaft and acting on the top ends of the two T-shaped shafts; the T-shaped shaft has a regular hexagonal cross section, the swing arm has spherical ends that abut against the ends of the T-shaped shaft, and the axially fixed cylinder is provided with a pulley.

[0012] Furthermore, the height adaptation adjustment mechanism includes a support frame shaped like a gate on the connecting seat, a second motor on the support frame, and a transmission screw arranged longitudinally and hinged between the support frame and the connecting seat; the transmission screw is threadedly engaged with the slide plate, the second motor is connected to one end of the transmission screw, and the longitudinal frame of the support frame clamps the slide plate and achieves a sliding engagement.

[0013] Furthermore, the transmission guide rail includes two linear guide rails arranged side by side at intervals, and a ball screw transmission pair hinged to the support base and located between the two linear guide rails; both ends of the linear guide rails are fixed on the support base, and the connecting seat is simultaneously connected to the screw nut of the ball screw transmission pair and the slider of the linear guide rail.

[0014] Furthermore, the drive mechanism includes a motor frame mounted on a support base and a third motor mounted on the motor frame and connected to the ball screw drive pair.

[0015] Furthermore, the ranging device includes a mounting bracket located on the lower side of the connecting seat and a laser ranging sensor located on the mounting bracket.

[0016] The beneficial effects of this invention are:

[0017] In terms of structural design, this invention utilizes a guide rail frame to enable the adjusting robotic arm to move stably laterally, and uses a distance measuring device to measure the thickness of the extruded waterproof membrane. If the thickness does not meet the standard, the adjusting robotic arm automatically rotates the fine-tuning bolts on the mold to ensure the processing requirements are met. The entire adjustment operation is highly automated, requires no manual operation, has high adjustment efficiency, and is precise and reliable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention in Figure 1 Schematic diagram of the structure in direction A;

[0020] Figure 3 For the present invention in Figure 1 A schematic diagram of the structure in the B direction.

[0021] Among them, 1-mold; 2-support base; 3-connecting base; 4-slide plate; 5-first motor; 6-support plate; 7-rotating head; 8-pulley; 9-synchronous belt; 10-axial fixing cylinder; 11-moving rod; 12-reset spring; 13-support frame; 14-second motor; 15-transmission screw; 16-linear guide rail; 17-ball screw transmission pair; 18-motor frame; 19-third motor; 20-mounting frame; 21-laser rangefinder sensor; 22-servo motor; 23-swing rod; 24-upper mold body; 25-lower mold body; 26-fine-adjusting bolt; 27-fine-adjusting block. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings:

[0023] like Figures 1 to 3 As shown, an automatic adjustment device for the die lip gap of an extrusion die in a waterproof membrane production line is disclosed. The device includes a guide rail frame, a gap-adjusting robotic arm, and a distance measuring device. The guide rail frame enables the gap-adjusting robotic arm to move laterally in a stable manner. The gap-adjusting robotic arm operates on the fine-tuning bolts in the existing structure of the die to adjust the die lip gap. The distance measuring device is used to measure and provide feedback on the size of the die lip gap, guiding the adjustment robotic arm to perform its actions.

[0024] in,

[0025] The mold 1 (mold head) includes an upper mold body 24, a lower mold body 25, a fine-tuning bolt 26, and a fine-tuning block 27. This structure of the mold 1 is an existing structure. For the sake of explaining the structure of the present invention, the relevant structure of the mold 1 is shown here.

[0026] The guide rail frame includes a support base 2, a transmission guide rail, and a drive mechanism. The support base 2 is plate-shaped and fixed to both ends of the upper mold body 24. The transmission guide rail includes two linear guide rails 16 and a ball screw transmission pair 17; the two linear guide rails 16 are arranged side by side at intervals and fixed between the support base 2, and each linear guide rail 16 includes a guide rail body and a slider that cooperates with the guide rail body; the ball screw transmission pair 17 includes a lead screw and a lead screw nut that cooperates with the lead screw, and the two ends of the lead screw are hinged to the support base 2; the cooperation between the linear guide rails 16 and the ball screw transmission pair 17 can provide stable guidance and driving action for the adjustable manipulator that cooperates with them. The drive mechanism includes a motor frame 18 mounted on the support base 2 and a third motor 19 mounted on the motor frame 18 and connected to the lead screw of the ball screw transmission pair 17.

[0027] The adjustable manipulator includes a connecting base 3, a height adaptation adjustment mechanism, and a screw rotation adjustment mechanism. The connecting base 3 provides basic connection and support; the height adaptation adjustment mechanism is used for lifting and lowering control of the screw rotation adjustment mechanism; the screw rotation adjustment mechanism acts on the fine-tuning bolt 26.

[0028] The connecting seat 3 is plate-shaped and is connected to both the screw nut of the ball screw drive pair 17 and the slider of the linear guide 16. The linear guide 16 provides guidance for the connecting seat 3, and the ball screw drive pair 17 is used to start the connecting seat 3.

[0029] The height adaptation adjustment mechanism includes a support frame 13, a second motor 14, and a transmission screw 15. The support frame 13 is door-shaped and fixed on the connecting seat 3. The second motor 14 is fixed to the top of the support frame 13. The transmission screw 15 is hinged between the support frame 13 and the connecting seat 3. The transmission screw 15 is arranged longitudinally, and the top of the transmission screw 15 is connected to the second motor 14. The second motor 14 drives the transmission screw 15 to rotate.

[0030] The screw-rotating adjustment mechanism includes a sliding plate 4, a first motor 5, a support plate 6, and a rotating head 7. The sliding plate 4 is flat and longitudinally arranged. Grooves are provided on both sides of the sliding plate 4, which engage with the inner edges of the two longitudinal frames of the support frame 13. Protrusions that fit the grooves are provided on the edges, allowing for sliding contact between the sliding plate 4 and the support frame 13, providing guidance for the lifting and lowering movement of the sliding plate 4. The lifting direction of the sliding plate 4 is parallel to the axial direction of the fine-tuning bolt 26. The slider 4 is threadedly engaged with the transmission screw 15, enabling movement control of the slider 4 when the transmission screw 15 actuates. The first motor 5 is mounted on... The slide plate 4 is mounted on one side; the support plate 6 is located on the other side of the slide plate 4; the rotating head 7 is mounted on the slide plate 4 and is used to drive the rotation of the fine-tuning bolt 26; in order to achieve precise adjustment of the mold lip gap of the mold 1, in the normal manual operation process, it is not allowed to adjust only a single fine-tuning bolt 26. When adjusting the gap, at least three fine-tuning bolts 26 must be adjusted within the fluctuation range. Therefore, to increase the operating efficiency and adjustment accuracy, the rotating head 7 should facilitate the synchronous adjustment of at least two fine-tuning bolts 26 or the rapid asynchronous adjustment of at least two fine-tuning bolts 26. Structurally, this invention... It can achieve synchronous or asynchronous rapid adjustment of the two fine-tuning bolts 26; the specific structure of the rotating head 7 includes an axial fixing cylinder 10, a T-shaped shaft 11, a return spring 12, a servo motor 22, and a swing arm 23; two axial fixing cylinders 10 are arranged side by side at intervals and hinged to the support plate 6, and the axial fixing cylinders 10 are axially fixed relative to the support plate 6, and a pulley 8 is provided on the axial fixing cylinder 10; the T-shaped shaft 11 is inserted into the axial fixing cylinder 10 and achieves sliding fit, the cross section of the T-shaped shaft 11 is hexagonal, used to adapt to the internal hexagonal structure of the fine-tuning bolt 26, and the T-shaped shaft 11 is axially fixed relative to the support plate 6. The fixed cylinder 10 is circumferentially stopped; the return spring 12 is sleeved on the T-shaped shaft 11, and the two connecting ends of the return spring 12 are respectively connected and fixed to the axial fixed cylinder 10 and the T-shaped shaft 11. The return spring 12 is normally in a compressed state; the servo motor 22 is fixed on the support plate 6 and is used to drive the swing arm 23 connected to it to swing; the middle part of the swing arm 23 is connected to the servo motor 22, and the two ends of the swing arm 23 are spherical and press against the T-shaped ends of the T-shaped shaft 11, and keep the return spring 12 in a compressed state. When the swing arm 23 swings, it realizes the alternating extension and retraction control of the two T-shaped shafts 11 relative to the axial fixed cylinder 10. Pulleys 8 are provided at the output end of the first motor 5 and on the axial fixed cylinder 10. A synchronous belt 9 is connected between the pulleys 8. In this way, the first motor 5 can synchronously control the rotation of the rotating head 7 through belt drive, and the servo motor 22 can realize the synchronous adjustment or asynchronous rapid adjustment of the fine adjustment bolt 26 of the two T-shaped shafts 11 through the swing arm 23.

[0031] The ranging device is mounted on the connecting seat 3 and is used for indirect measurement of the die lip gap. The ranging device includes a mounting bracket 20 located on the lower side of the connecting seat 3 and a laser ranging sensor 21 located on the mounting bracket 20. The laser ranging sensor 21 acts vertically at the die port and obtains the die lip gap by measuring the thickness of the extruded waterproof membrane. The laser ranging sensor 21 provides data support for the rotation amount of the fine-tuning bolt 26.

[0032] The working process and principle of this invention:

[0033] In this invention, the first motor 5, the second motor 14, the third motor 19, and the laser ranging sensor 21 can be connected to an external controller, such as a PLC controller, for integrated control. The PLC controller can be connected to the support base 2 through a housing. When fine-tuning the thickness of the waterproof membrane: the third motor 19 is started, driving the ball screw transmission pair 17 to move. With the cooperation of the linear guide rail 16, the lateral movement control of the connecting seat 3 is realized, thereby realizing the lateral movement of the gap-adjusting robotic arm relative to the mold 1. The gap-adjusting robotic arm first moves laterally from one end of the mold to the other end. During the lateral movement, the laser ranging sensor 21 is activated and detects the thickness of the waterproof membrane extruded from the mold. The laser ranging sensor 21 transmits the detected data to the controller, which records the fluctuation range. Then, the gap-adjusting robotic arm is controlled to move alternately from the middle of the mold 1 to both sides and move to the corresponding fluctuation area. When the gap-adjusting robotic arm moves to the thickness fluctuation area, the control... The second motor 14 is activated, driving the transmission screw 15 to rotate. The transmission screw 15 then moves the slider 4 a specified distance before stopping. When the servo motor 22 is not activated, the two T-shaped shafts 11 are aligned with the axially fixed cylinder 10. With the slider 4 moving a specified distance, the two T-shaped shafts 11 can be synchronously inserted into the internal hexagonal slots of the two adjacent fine-tuning bolts 26, achieving synchronous adjustment of the two fine-tuning bolts 26. When it is necessary to adjust the two adjacent fine-tuning bolts 26 sequentially and variablely, the servo motor 22 controls the rocker arm 23 to change the extension amount of the two T-shaped shafts 11 relative to the axially fixed cylinder 10. With the slider 4 moving a specified distance, only a single fine-tuning bolt can be rotated. Adjusting bolt 26 or two fine-tuning bolts 26 sequentially can also achieve variable adjustment of the two fine-tuning bolts 26; the controller has a proportional relationship between the waterproof plate adjustment thickness and the rotation amount of the fine-tuning bolts 26. To achieve effective docking of the movable rod 11 with the fine-tuning bolts 26, when setting the proportional relationship between the waterproof plate adjustment thickness and the rotation amount of the fine-tuning bolts 26, a certain proportional relationship can be established between the rotation amount of the fine-tuning bolts 26 and the rotation angle of the fine-tuning bolts 26. For example, the single rotation amount of the fine-tuning bolts 26, after being converted into a rotation angle, is an integer multiple of 60° of the rotation of the fine-tuning bolts 26; according to the measured thickness, the first motor 5 is controlled to operate, and the first motor 5 drives the axially fixed cylinder 1 through belt drive. 0 rotation, thereby realizing the rotation control of the T-shaped shaft 11, thus realizing the control of the rotation amount of the fine adjustment bolt 26; within the fluctuation area, the adjustment robot arm acts on two fine adjustment bolts 26 at a time, and two fine adjustment bolts 26 are recorded as a group. After the adjustment robot arm acts on two adjacent groups, it completes one adjustment action. Alternatively, according to the setting, it can complete three adjacent groups as one adjustment action. After completing the adjustment in one fluctuation area, it proceeds to the adjustment of the next fluctuation area until the entire fluctuation area of ​​mold 1 is adjusted. After mold 1 completes a single adjustment, it performs the same operation control 2 to 3 more times until the fine adjustment operation meets the requirements and then stops. When it stops, the adjustment robot arm is located at the initial position at one end of mold 1.This invention can automate fine-tuning operations, with high efficiency and precise adjustment, effectively avoiding material waste and saving production costs.

Claims

1. An automatic adjustment device for the die lip gap of an extrusion mold in a waterproof membrane production line, characterized in that, include: The guide rail frame includes two support seats (2) on the mold (1), a transmission guide rail between the support seats (2), and a drive mechanism on one support seat (2) that drives the transmission guide rail to move. The adjustable manipulator includes a connecting seat (3) that mates with a transmission guide rail, a height adaptation adjustment mechanism on the connecting seat (3), and a screw rotation adjustment mechanism on the height adaptation adjustment mechanism. The screw rotation adjustment mechanism includes a longitudinally arranged sliding plate (4), a first motor (5) on one side of the sliding plate (4), a support plate (6) on the other side of the sliding plate (4), and a rotating head (7) hinged to the support plate (6). Both the output end of the first motor (5) and the rotating head (7) are provided with pulleys (8), and a synchronous belt (9) connects the pulleys (8). The rotating head (7) includes two parallel spaced sliding plates. The device includes an axially fixed cylinder (10) hinged to the support plate (6), a T-shaped shaft (11) that is only slidably fitted to the axially fixed cylinder (10), a return spring (12) sleeved on the T-shaped shaft and connected between the T-shaped shaft (11) and the axially fixed cylinder (10), a servo motor (22) mounted on the support plate (6), and a rocker arm (23) mounted on the output shaft of the servo motor (22) and acting on the top ends of the two T-shaped shafts (11); the T-shaped shaft (11) has a regular hexagonal cross section, the rocker arm (23) has spherical ends that abut against the ends of the T-shaped shaft (11), and a pulley (8) mounted on the axially fixed cylinder (10). The distance measuring device is located on the connecting seat (3) and is used to measure the gap between the mold lips.

2. The automatic adjustment device for the die lip gap of an extrusion mold in a waterproof membrane production line as described in claim 1, characterized in that, The height adaptation adjustment mechanism includes a support frame (13) mounted on the connecting seat (3) and in a U-shape, a second motor (14) mounted on the support frame (13), and a transmission screw (15) arranged longitudinally and hinged between the support frame (13) and the connecting seat (3); the transmission screw (15) is threadedly engaged with the slide plate (4), the second motor (14) is connected to one end of the transmission screw (15), and the longitudinal frame of the support frame (13) clamps the slide plate (4) and achieves a sliding engagement.

3. The automatic adjustment device for the die lip gap of the extrusion mold in a waterproof membrane production line as described in claim 1, characterized in that, The transmission guide rail includes two linear guide rails (16) arranged side by side at intervals, and a ball screw transmission pair (17) hinged to the support base (2) and located between the two linear guide rails (16); the two ends of the linear guide rails (16) are fixed on the support base (2), and the connecting seat (3) is simultaneously connected to the screw nut of the ball screw transmission pair (17) and the slider of the linear guide rail (16).

4. The automatic adjustment device for the die lip gap of the extrusion mold in a waterproof membrane production line as described in claim 3, characterized in that, The drive mechanism includes a motor frame (18) mounted on a support base (2) and a third motor (19) mounted on the motor frame (18) and connected to the ball screw drive pair (17).

5. The automatic adjustment device for the die lip gap of an extrusion mold in a waterproof membrane production line as described in claim 1, characterized in that, The ranging device includes a mounting bracket (20) located on the lower side of the connecting base (3) and a laser ranging sensor (21) located on the mounting bracket (20).

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