Adjustment device and control method of opposite shot injection molding machine

Abstract

An adjustment device for a shot injection molding machine and a control method thereof, comprising a frame, a first template, a second template, a third template, a mold shifting cylinder, a sliding foot mechanism, a first position signal generator, a second position signal generator, a first position signal receiver and a second position signal generator, wherein the first template is fixedly mounted on the frame, the second template and the third template are connected to the frame via the sliding foot mechanism, the sliding foot mechanism can adjust the positions of the second template and the third template and slide on the frame, the first position signal generators are fixedly arranged on the four corners of the second template, corresponding to the four first position signal receivers fixedly arranged on the first template, the second position signal generators are fixedly arranged on the four corners of the third template, corresponding to the four second position signal receivers fixedly arranged on the first template; the present invention can adjust the relative positions between templates and molds in real time during the mold closing process, thereby saving the injection molding cycle time and improving the mold closing accuracy.

Description

Technical Field

[0001] The invention relates to the field of injection molding, and in particular to an adjustment device for a shot-to-shot injection molding machine and a control method thereof. Background Art

[0002] Three templates are installed on the single-color shot injection molding machine, and two molds are installed at the same time for injection molding. During the injection molding process, at least two templates need to be moved. The power mechanism for moving the template is a cylinder, and the speed accuracy of the cylinder is difficult to accurately control. The asynchronous movement of the two molds during the mold closing process increases the injection molding cycle and production time.

[0003] Since the mold is installed on the template, there will be slight vibration during the mold closing and opening process. Although there is a tie rod to guide the moving template, the height and horizontal position of the template will still change, which will affect the mold closing accuracy. When the mold closing accuracy is reduced, the quality of the injection molded product will be reduced, and flash, warping and other problems will occur.

[0004] Good mold clamping technology ensures that the mold plate opens and closes smoothly and quickly during the mold clamping process. Therefore, a good mold clamping mechanism needs to meet the following basic requirements: it should be able to provide high-speed, stable, low-noise and other excellent characteristics of the mold plate movement. This is the performance requirement of the mold clamping mechanism. High speed means high productivity, and stability and low noise mean avoiding fluctuations during the mold clamping action to ensure mold clamping accuracy. At present, most mold clamping methods use robotic arms to operate. When placing the mold, the mechanical vibration often causes position deviations between the upper and lower molds, which seriously affects the accuracy of the mold clamping.

[0005] The traditional sliding foot mechanism requires workers to fix the sliding foot and the inclined iron position with screws to achieve the purpose of adjusting the height of the template. However, during the adjustment process, it is difficult for workers to grasp the adjustment accuracy of the left and right ends of the sliding foot, resulting in reduced accuracy of the template and mold during the mold closing process. At the same time, the mold and template are very heavy, and there is a certain risk for workers to operate with their bare hands. Summary of the invention

[0006] The purpose of the present application is to provide an adjustment device for a double-shot injection molding machine and a control method thereof, so as to solve the problem of low mold clamping accuracy of the double-shot injection molding machine.

[0007] To achieve the above purpose, this application adopts the following technical solutions:

[0008] An adjustment device for a double-shot injection molding machine comprises a frame, a first template, a second template, a third template, a mold shifting cylinder, a sliding foot mechanism, a first position signal generator, a second position signal generator, a first position signal receiver and a second position signal receiver, wherein the first template is fixedly mounted on the frame, the second template and the third template are connected to the frame via the sliding foot mechanism, the sliding foot mechanism can adjust the positions of the second template and the third template and slide on the frame, the second template and the third template slide on the frame via the sliding foot mechanism under the drive of the mold shifting cylinder, the first position signal generator comprises four first position signal generators, which are respectively fixedly arranged on the four corners of the second template, and four first position signal receivers are correspondingly fixedly arranged on the first template, the second position signal generator comprises four second position signal generators, which are respectively fixedly arranged on the four corners of the third template, and four second position signal receivers are correspondingly fixedly arranged on the first template.

[0009] Preferably, the sliding foot mechanism also includes a first inclined iron, a second inclined iron, a first rotating shaft, a second rotating shaft, a sliding foot, a first screw rod, a second screw rod, a carrier, a driving motor and a first spring and a second spring; two inclined surfaces are provided on both sides of the bottom of the sliding foot, and a mounting groove is provided in the middle position of the bottom; the first inclined iron and the second inclined iron are both provided with inclined surfaces adapted to the two inclined surfaces and are respectively installed on both sides of the bottom of the sliding foot; the carrier gap is installed in the mounting groove; the carrier includes a wheel-axle meshing transmission unit, one end of the first screw rod and the second screw rod are fixed inside the carrier and meshedly connected with the wheel-axle meshing transmission unit The first rotating shaft is rotatably mounted inside the first inclined iron and meshes with the other end of the first screw rod, the second rotating shaft is rotatably mounted inside the second inclined iron and meshes with the other end of the second screw rod, the spiral directions of the first screw rod and the second screw rod are opposite, the first spring and the second spring are mounted in the mounting groove and on the upper and lower sides of the carrier, the driving motor is fixedly mounted on the carrier and the output shaft is connected to the wheel axle meshing transmission unit, under the action of the driving motor, the first screw rod and / or the second screw rod are driven to move through the wheel axle meshing transmission unit.

[0010] Preferably, the wheel shaft meshing transmission unit comprises a driving wheel shaft, a first driven wheel shaft, a second driven wheel shaft, an idler wheel shaft, a first limit wheel shaft, a second limit wheel shaft, a reversing wheel shaft, an adjusting wheel shaft, a clutch wheel shaft and a clutch motor; both ends of the driving wheel shaft, the first driven wheel shaft, the second driven wheel shaft, the idler wheel shaft, the first limit wheel shaft, the second limit wheel shaft, the reversing wheel shaft, the adjusting wheel shaft and the clutch wheel shaft are all installed inside the carrier and can rotate circumferentially;

[0011] The driving wheel shaft and the second driven wheel shaft, the clutch wheel shaft and the idler wheel shaft are meshed and matched with each other, the idler wheel shaft and the first driven wheel shaft are meshed and matched, the first driven wheel shaft and the second driven wheel shaft are meshed and matched with the first screw rod and the second screw rod respectively, the reversing wheel shaft and the first limiting wheel shaft are meshed and matched, the output shaft of the driving motor is connected to the driving wheel shaft, the clutch motor is fixedly mounted on the carrier, one end of the adjusting wheel shaft is fixed on the clutch motor, the other end can be fixed on the carrier for circumferential rotation, a section of the clutch wheel shaft is a bevel gear, and the thickness can make the clutch wheel shaft mesh with the second limiting wheel shaft, the driving wheel shaft and the reversing wheel shaft at the same time, a section of the clutch wheel shaft is a groove type, which can mesh and match with the gear section of the adjusting wheel shaft, and under the drive of the clutch motor, the adjusting wheel shaft drives the clutch wheel shaft to move axially in the mounting hole in the carrier.

[0012] Preferably, a part of the gear section of the first limiting wheel axle and the second limiting wheel axle are both provided with a protruding rod, and the protruding rod is provided with a movable groove, the width of the movable groove of the first limiting wheel axle can match the shaft diameter of the first driven wheel axle, and the width of the movable groove of the second limiting wheel axle can match the shaft diameter of the second driven wheel axle, the first driven wheel axle and the second driven wheel axle are installed in the sliding groove of the carrier and can move left and right under the drive of the first limiting wheel axle and the second limiting wheel axle.

[0013] Preferably, it includes a control system, which is used to receive position signals from the four first position signal receivers and the four second position signal receivers, and determine the position status of the second template and the third template, and the control system is used to control the sliding foot mechanism to adjust the position of the second template and the third template.

[0014] Preferably, the four first position signal generators emit four first position signals including a D1 position signal, a D2 position signal, a D3 position signal and a D4 position signal; the four second position signal generators emit four second position signals including an E1 position signal, an E2 position signal, an E3 position signal and an E4 position signal; the D1 position signal and the D3 position signal are respectively emitted by the two first position signal generators installed at the upper and lower positions of one side of the second template, and the D2 position signal and the D4 position signal are respectively emitted by the other two first position signal generators installed at the upper and lower positions of the other side of the second template; the E1 position signal and the E3 position signal The four first position signals and the four second position signals are respectively emitted by the two second position signal generators installed at the upper and lower positions of one side surface of the third template, and the E2 position signal and the E4 position signal are respectively emitted by the other two second position signal generators installed at the upper and lower positions of the other side surface of the third template; when the three templates are precisely molded, the four first position signals and the four second position signals are set to zero, and when the deviations of the four first position signals and the four second position signals are all less than the threshold value, it is the allowable error when the mold is closed; when the deviations of the four first position signals or the four second position signals are greater than the threshold value, the position of the second template or the third template is adjusted by the sliding foot mechanism until the deviations are all less than the threshold value.

[0015] Preferably, when the deviation between the D1 position signal and the D2 position signal is greater than a threshold, and the deviation between the D3 position signal and the D4 position signal is less than a threshold, it is judged that the second template is in a backward state; when the deviation between the D1 position signal and the D2 position signal is less than a threshold, and the deviation between the D3 position signal and the D4 position signal is greater than the threshold, it is judged that the second template is in a forward state; when the deviation between the E1 position signal and the E2 position signal is greater than a threshold, and the deviation between the E3 position signal and the E4 position signal is less than a threshold, it is judged that the third template is in a backward state; when the deviation between the E1 position signal and the E2 position signal is less than a threshold, and the deviation between E3 and E4 is greater than a threshold, it is judged that the third template is in a forward state; when the D1 position signal, the D2 position signal, the D3 position signal and the D4 position signal are all greater than the threshold, it is judged that the height of the second template is too high or too low; when E1, E2, E3 and E4 are all greater than the threshold, it is judged that the height of the third template is too high or too low.

[0016] Preferably, the threshold value ranges from 0.001 to 0.1 mm.

[0017] The present invention also discloses a control method for an adjustment device of a double-shot injection molding machine, wherein the adjustment device is the adjustment device as described above, and comprises the following steps:

[0018] S1: a first position signal generator is set at the four corners of the second template, and a first position signal receiver is set on the first template accordingly; a second position signal generator is set at the four corners of the third template, and a second position signal receiver is set on the first template accordingly;

[0019] S2: When the mold is precisely closed for the first time, the first position signal and the second position signal are set to zero, and the threshold is set;

[0020] S3: During the mold closing process, the first position signal and the second position signal are processed and the positional relationship between the second template and the third template is determined;

[0021] S4: adjusting the position of the second template and / or the third template by the sliding foot mechanism, and performing real-time monitoring and feedback of the positional relationship of the second template and / or the third template;

[0022] S5: The molds between the templates are precisely assembled for injection molding.

[0023] Beneficial Effects

[0024] Compared with the prior art, the present invention uses sensors to detect the position accuracy difference between templates and initially define the relatively precise mold position of the templates, which can ensure that the mold accuracy of the same batch of injection molded products reaches the same level. At the same time, the position relationship between the templates is detected in real time during the mold closing process, and the accuracy loss during the mold closing process is compensated by adjusting the sliding foot mechanism, avoiding problems such as flash and warping that may occur in injection molded products.

[0025] The present invention arranges an axle meshing transmission unit inside the carrier, and only needs one clutch motor to realize three mode switching of the sliding foot mechanism; including driving only the first screw rod, driving only the second screw rod and driving the first screw rod and the second screw rod at the same time. When the sliding foot mechanism drives the first screw rod and the second screw rod at the same time, the synchronization is better than that of two motors driving the first screw rod and the second screw rod separately. At the same time, the volume of the two driving motors is too large, and the mechanism can save space volume and energy consumption of the driving motors.

[0026] Using a motor instead of manually adjusting the sliding foot mechanism can improve the accuracy of the sliding foot mechanism in adjusting the template, while reducing the danger of workers' operation. Combined with sensors to detect position errors, accurate, fast and smooth adjustment can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the adjustment device of the shot-to-shot injection molding machine in the present application;

[0028] Figure 2 yes Figure 1A three-dimensional structural diagram of a sliding foot mechanism in an adjustment device of a shot-to-shot injection molding machine;

[0029] Figure 3 yes Figure 1 A three-dimensional structural schematic diagram of another embodiment of a sliding foot mechanism in an adjustment device of a shot-to-shot injection molding machine;

[0030] Figure 4 yes Figure 2 A schematic cross-sectional view of a platform in a sliding foot mechanism;

[0031] Figure 5 yes Figure 2 A cross-sectional schematic diagram of the platform in the sliding foot mechanism at another viewing angle;

[0032] Figure 6 It is a flow chart of a specific embodiment of a control method of an adjustment device of a shot injection molding machine;

[0033] Figure 7 This is a schematic diagram of the third template's backward position during the mold closing process;

[0034] Figure 8 Schematic diagram of the distance L1 between the third template detection receiving position 12 and the initial receiving position 11 during the mold closing process;

[0035] In the figure, 1, the second template; 2, the first template; 3, the third template; 4, the sliding foot mechanism; 5, the mold shifting cylinder; 6, the first position signal generator; 7, the second position signal generator; 8, the first position signal receiver; 9, the second position signal receiver; 11, the initial receiving position; 12, the detection receiving position; 41, the sliding foot; 42, the first inclined iron; 43, the first screw rod; 44, the carrier; 45, the second screw rod; 46, the first spring; 47, the driving motor; 48, the clutch motor; 441, the driving wheel shaft; 442, the second driven wheel shaft; 443, the idler wheel shaft; 444, the first driven wheel shaft; 445, the clutch wheel shaft; 446, the second limit wheel shaft; 447, the reversing wheel shaft; 448, the first limit wheel shaft; 449, the adjusting wheel shaft; DETAILED DESCRIPTION

[0036] The present application is described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. In addition, if the detailed description of the known technology is unnecessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0037] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0038] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "" and "the" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other elements, or there may be intermediate elements. In addition, "connected" or "coupled" as used herein may include wireless connections or wireless couplings. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0039] like Figure 1 As shown, the present invention discloses an adjustment device for a shot injection molding machine, comprising a frame, a first template 2, a second template 1, a third template 3, a mold shifting cylinder 5, a sliding foot mechanism 4, a first position signal generator 6, a second position signal generator 7, a first position signal receiver 8 and a second position signal receiver 9. The first template 2 is fixedly mounted on the frame, the second template 1 and the third template 3 are connected to the frame through the sliding foot mechanism 4, the sliding foot mechanism 4 can adjust the positions of the second template 1 and the third template 3 and slide on the frame, the second template 1 and the third template 3 slide on the frame through the sliding foot mechanism 4 under the drive of the mold shifting cylinder 5, the first position signal generator 6 includes four first position signal generators 6, which are respectively fixedly arranged on the four corners of the second template 1, and four first position signal receivers 8 are correspondingly fixedly arranged on the first template 2, the second position signal generator 7 includes four second position signal generators 7, which are respectively fixedly arranged on the four corners of the third template 3, and four second position signal receivers 9 are correspondingly fixedly arranged on the first template 2.

[0040] There is a preferred solution, such as Figure 2As shown, the sliding foot mechanism 4 also includes a first inclined iron 42, a second inclined iron, a first rotating shaft, a second rotating shaft, a sliding foot 41, a first screw rod 43, a second screw rod 45, a carrier 44, a driving motor 47 and a first spring 46 and a second spring; two inclined surfaces are provided on both sides of the bottom of the sliding foot 41, and a mounting groove is provided in the middle position of the bottom; the first inclined iron 42 and the second inclined iron are both provided with inclined surfaces adapted to the two inclined surfaces and are respectively installed on both sides of the bottom of the sliding foot 41; the carrier 44 is installed in the mounting groove with a gap; the carrier 44 includes a wheel-axle meshing transmission unit, one end of the first screw rod 43 and one end of the second screw rod 45 are fixed inside the carrier 44 and meshed with the wheel axle The transmission unit is meshingly connected, the first rotating shaft is rotatably installed inside the first inclined iron 42 and meshingly cooperates with the other end of the first screw rod 43, the second rotating shaft is rotatably installed inside the second inclined iron and meshingly cooperates with the other end of the second screw rod 45, the spiral directions of the first screw rod 43 and the second screw rod 45 are opposite, the first spring 46 and the second spring are installed in the installation groove and are arranged on the upper and lower sides of the carrier 44, the driving motor 47 is fixedly installed on the carrier 44 and the output shaft is connected to the wheel axle meshing transmission unit, under the action of the driving motor 47, the first screw rod 43 and / or the second screw rod 45 are driven to move through the wheel axle meshing transmission unit.

[0041] There is a preferred solution, such as Figure 4 , 5 As shown, the wheel shaft meshing transmission unit includes a driving wheel shaft 441, a first driven wheel shaft 444, a second driven wheel shaft 442, an idler wheel shaft 443, a first limiting wheel shaft 448, a second limiting wheel shaft 446, a reversing wheel shaft 447, an adjusting wheel shaft 449, a clutch wheel shaft 445 and a clutch motor 48; the driving wheel shaft 441, the first driven wheel shaft 444, the second driven wheel shaft 442, the idler wheel shaft 443, the first limiting wheel shaft 448, the second limiting wheel shaft 446, the reversing wheel shaft 447, the adjusting wheel shaft 449 and Both ends of the clutch wheel shaft 445 are installed inside the carrier 44 and can rotate circumferentially; the driving wheel shaft 441 and the second driven wheel shaft 442, the clutch wheel shaft 445 and the idler wheel shaft 443 are meshed with each other, the idler wheel shaft 443 and the first driven wheel shaft 444 are meshed with each other, the first driven wheel shaft 444 and the second driven wheel shaft 442 are meshed with the first screw rod 43 and the second screw rod 45 respectively, the reversing wheel shaft 447 and the first limiting wheel shaft 448 are meshed with each other, and the output shaft of the drive motor 47 is connected to the driving wheel shaft 441.

[0042] The clutch motor 48 is fixedly mounted on the carrier 44, one end of the adjusting wheel shaft 449 is fixed on the clutch motor 48, and the other end can be fixed on the carrier 44 in a circumferentially rotatable manner. A section of the clutch wheel shaft 445 is a bevel gear, and the thickness can enable the clutch wheel shaft 445 to mesh with the second limiting wheel shaft 446, the driving wheel shaft 441 and the reversing wheel shaft 447 at the same time. A section of the clutch wheel shaft 445 is a groove type, which can mesh with the gear section of the adjusting wheel shaft 449. Under the drive of the clutch motor 48, the adjusting wheel shaft 449 drives the clutch wheel shaft 445 to move axially in the mounting hole in the carrier 44.

[0043] A part of the gear section of the first limiting wheel axle 448 and the second limiting wheel axle 446 are both provided with a protruding rod, and the protruding rod is provided with a movable groove. The width of the movable groove of the first limiting wheel axle 448 can match the shaft diameter of the first driven wheel axle 444, and the width of the movable groove of the second limiting wheel axle 446 can match the shaft diameter of the second driven wheel axle 442. The first driven wheel axle 444 and the second driven wheel axle 442 are installed in the sliding groove of the carrier 44 and can move left and right under the drive of the first limiting wheel axle 448 and the second limiting wheel axle 446.

[0044] There is a preferred solution, which also includes a control system, which is used to receive position signals from four first position signal receivers 8 and four second position signal receivers 9, and judge the position status of the second template 1 and the third template 3, and the control system is used to control the sliding foot mechanism 4 to adjust the position of the second template 1 and the third template 3.

[0045] More specifically, the four first position signal generators 6 send out four first position signals including a D1 position signal, a D2 position signal, a D3 position signal and a D4 position signal; the four second position signal generators 7 send out four second position signals including an E1 position signal, an E2 position signal, an E3 position signal and an E4 position signal; the D1 position signal and the D3 position signal are respectively sent out by two first position signal generators 6 installed at the upper part of one side of the second template 1 and the lower part of one side of the second template 1, and the D2 position signal and the D4 position signal are respectively sent out by the other two first position signal generators 6 installed at the upper part of the other side of the second template 1 and the lower part of the other side of the second template 1; the E1 position signal and the E3 position signal are respectively sent out by the other two first position signal generators 6 installed at the upper part of the other side of the second template 1 and the lower part of the other side of the second template 1; The position signals are respectively emitted by two second position signal generators 7 installed at the upper part of one side of the third template 3 and the lower part of one side of the third template 3, and the E2 position signal and the E4 position signal are respectively emitted by the other two second position signal generators 7 installed at the upper part of the other side of the third template 3 and the lower part of the other side of the third template 3; when the three templates are precisely molded, the four first position signals and the four second position signals are set to zero, and when the deviations of the four first position signals and the four second position signals are all less than the threshold value, it is the allowable error when the mold is closed; when the deviations of the four first position signals or the four second position signals are greater than the threshold value, the position of the second template 1 or the third template 3 is adjusted by the sliding foot mechanism 4 until the deviations are all less than the threshold value.

[0046] More specifically, when the deviation between the D1 position signal and the D2 position signal is greater than the threshold, and the deviation between the D3 position signal and the D4 position signal is less than the threshold, it is judged that the second template 1 is in a backward state; when the deviation between the D1 position signal and the D2 position signal is less than the threshold, and the deviation between the D3 position signal and the D4 position signal is greater than the threshold, it is judged that the second template 1 is in a forward state; when the deviation between the E1 position signal and the E2 position signal is greater than the threshold, and the deviation between the E3 position signal and the E4 position signal is less than the threshold, it is judged that the third template 3 is in a backward state; when the deviation between the E1 position signal and the E2 position signal is less than the threshold, and the deviation between E3 and E4 is greater than the threshold, it is judged that the third template 3 is in a forward state; when the D1 position signal, the D2 position signal, the D3 position signal and the D4 position signal are all greater than the threshold, it is judged that the height of the second template 1 is too high or too low; when E1, E2, E3 and E4 are all greater than the threshold, it is judged that the height of the third template 3 is too high or too low.

[0047] Preferably, the threshold value ranges from 0.001 to 0.1 mm.

[0048] There is a specific embodiment, such as Figure 7 , 8As shown, during the first precise mold closing, the initial receiving position 11 of the second position signal receiver is set. During the mold closing process, the third template 3 generates a horizontal angle α. At this time, the second position signal receiver 9 receives the signal of the second position generator 7 as the detection receiving position 12. The distance L1 between the detection receiving position 12 and the initial receiving position 11 is greater than the threshold value. At this time, the sliding foot mechanism 4 is controlled to perform unilateral adjustment, and the height of the template is set to H, so that the unilateral inclined iron is translated by Hcosα until the horizontal angle α is adjusted to 90 degrees.

[0049] There is a specific embodiment, such as Figure 1-4 As shown, during the first precise mold closing, the position signals of the position signal generator and the position signal receiver are adjusted to zero and the threshold value A is set to 0.01mm. Starting from the second mold closing, the second template 1 and the third template 3 move toward the first template 2 under the drive of the mold shifting cylinder 5, and the first position signal generating receiver 8 receives the signal of the first position signal generator 6 to generate D1 position signal, D2 position signal, D3 position signal, and D4 position signal respectively; the second position signal receiver 9 and the signal of the second position signal generator 7 generate position signals E1 position signal, E2 position signal, E3 position signal, and E4 position signal respectively; the above position signals are uploaded to the control system in real time, and the control system detects and determines the relationship between the D1 position signal, D2 position signal, D3 position signal, and D4 position signal and the E1 position signal, E2 position signal, E3 position signal, and E4 position signal and 0.01mm.

[0050] When the D1 position signal, D2 position signal of the second template 1 are greater than 0.01mm, and the D3 position signal, and D4 position signal are less than 0.01mm, it is determined that the second template 1 has tilted back. At this time, the control system controls the clutch motor 48 to rotate clockwise and drives the adjusting wheel shaft 449 to rotate clockwise. The clutch wheel shaft 445 is driven by the adjusting wheel shaft 449 to move forward, and keeps meshing with the driving wheel shaft 441 and the reversing wheel shaft 447, and disengages from the second limiting wheel shaft 446. The driving motor 47 drives the driving wheel shaft 441 to rotate counterclockwise. Under the meshing transmission of the driving wheel shaft 441, the clutch wheel shaft 445 and the reversing wheel shaft 447, the first limiting wheel shaft 448 rotates clockwise, and the protruding rod of the first limiting wheel shaft 448 drives the first transmission wheel shaft 444 to move left. The driven wheel shaft is disengaged from the idler wheel shaft 443, and the clutch wheel shaft 445 continues to be driven forward to disengage from the driving wheel shaft 441. At this time, the driving wheel shaft 441 can only drive the second driven wheel shaft 442 to rotate clockwise, and the second driven wheel shaft 442 drives the second screw rod 45 to rotate. The second screw rod 45 cooperates with the rotating shaft inside the inclined iron 42 to drive the inclined iron 42 to move to the left, and the right side height of the sliding foot 41 is slowly increased, driving the second template 1 to slowly tilt forward. At the same time, the platform 44 moves downward in the sliding groove inside the sliding foot 41, and the first spring 46 under the platform 44 is compressed, keeping the second screw rod 45 engaged with the rotating shaft inside the inclined iron 42 until the D1 position signal, D2 position signal, D3 position signal, and D4 position signal are <0.01mm, and the adjustment is stopped.

[0051] When the E1 position signal, E2 position signal, E3 position signal, and E4 position signal of the third template 3 are greater than 0.01 mm, it is determined that the position of the third template 3 is too high, and the clutch motor 48 is driven to drive the adjusting wheel shaft 449, and the adjusting wheel shaft 449 drives the clutch wheel shaft 445 to move backward, so that the clutch wheel shaft 445 is disengaged from the driving wheel shaft 441. At this time, the first driven wheel shaft and the idler wheel shaft 443 maintain meshing transmission with the first screw rod 43, and the second driven wheel shaft 442 maintains meshing transmission with the second screw rod 45, and the driving motor 47 drives the driving wheel shaft 441 rotates, the first screw rod 43 drives the left bevel iron 42 to move to the left, and the second screw rod 45 drives the right bevel iron 42 to move to the right, and the slide foot 41 moves downward relative to the frame, driving the first template 2 to move downward. At this time, the platform 44 moves upward inside the slide foot 41, and the first spring 46 on the platform 44 is compressed. The first screw rod, the first lead screw and the rotating shafts inside the first bevel iron 42 and the second bevel iron keep matching until the E1 position signal, E2 position signal, E3 position signal, and E4 position signal are <0.01mm, and the adjustment is stopped.

[0052] There is a preferred embodiment, such as Figure 3As shown, the inclined surfaces of the first inclined iron 42 and the second inclined iron are set as convex arc surfaces, and the contact with the inclined surfaces on both sides of the bottom of the sliding foot 41 is line contact. By applying this solution, when adjusting the forward or backward posture of the template, it is possible to avoid the pressure on the screw rod of the inclined iron when the sliding foot 41 is unilaterally adjusted in height, which may cause the screw rod to break.

[0053] The present application also discloses a control method for an adjustment device of a shot injection molding machine.

[0054] S1: a first position signal generator is set at the four corners of the second template, and a first position signal receiver is set on the first template accordingly; a second position signal generator is set at the four corners of the third template, and a second position signal receiver is set on the first template accordingly;

[0055] S2: When the mold is precisely closed for the first time, the first position signal and the second position signal are set to zero, and the threshold is set;

[0056] S3: During the mold closing process, the first position signal and the second position signal are processed and the positional relationship between the second template and the third template is determined;

[0057] S4: adjusting the position of the second template and / or the third template by the sliding foot mechanism, and performing real-time monitoring and feedback of the positional relationship of the second template and / or the third template;

[0058] S5: The molds between the templates are precisely assembled for injection molding.

[0059] See also Figure 6 The present application is about a specific embodiment of a control method for an adjustment device of a double-shot injection molding machine. Specifically, taking the adjustment of the position of the second template as an example, the method comprises the steps of:

[0060] S1: a first position signal generator 6 is arranged at four corners of the second template 1, and a first position signal receiver 8 is arranged on the first template 2 correspondingly;

[0061] S2: When the mold is precisely closed for the first time, the first position signal is set to zero and the threshold A is set;

[0062] S3: During the mold closing process, the control system processes the position signal and determines the position relationship of the template. When the error between the D1 position signal and the D2 position signal is greater than the threshold, and the error between the D3 position signal and the D4 position signal is less than the threshold, it is determined that the second template 1 is tilted backward; when the error between the D1 position signal and the D2 position signal is less than the threshold, and the error between the D3 position signal and the D4 position signal is greater than the threshold, it is determined that the second template 1 is tilted forward; when the D1 position signal, the D2 position signal, the D3 position signal and the D4 position signal are all greater than the threshold, it is determined that the height of the second template 1 is too high or too low;

[0063] S4: the control system switches the mode of the sliding foot mechanism 4 and drives the sliding foot mechanism 4 to adjust the position of the template, and at the same time performs real-time monitoring and feedback on the position relationship of the template;

[0064] S5: The molds between the templates are precisely assembled for injection molding.

[0065] To sum up, in the process of closing the three templates, the present invention uses sensors and sliding foot mechanisms to correct the position of the templates in real time, thereby improving the closing mold accuracy and overlapping the adjustment and closing mold time, which does not affect the injection molding production time and efficiency. At the same time, the height of the template can be adjusted by an electric sliding foot mechanism, which reduces the danger and difficulty of workers' operation; a clutch motor is used to switch the mode of the sliding foot mechanism, which improves the synchronization accuracy during bilateral adjustment. At the same time, compared with the use of dual drive motors, it can save space and reduce energy consumption.

[0066] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An adjustment device for a shot-to-shot injection molding machine, characterized in that: It includes a frame, a first template, a second template, a third template, a mold shifting cylinder, a sliding foot mechanism, a first position signal generator, a second position signal generator, a first position signal receiver and a second position signal receiver, wherein the first template is fixedly mounted on the frame, the second template and the third template are connected to the frame through the sliding foot mechanism, the sliding foot mechanism can adjust the positions of the second template and the third template and slide on the frame, the second template and the third template slide on the frame through the sliding foot mechanism under the drive of the mold shifting cylinder, the first position signal generator includes four first position signal generators, which are respectively fixedly arranged on the four corners of the second template, and four first position signal receivers are correspondingly fixedly arranged on the first template, the second position signal generator includes four second position signal generators, which are respectively fixedly arranged on the four corners of the third template, and four second position signal receivers are correspondingly fixedly arranged on the first template; The sliding foot mechanism is provided with a carrier, and the carrier includes a wheel axle meshing transmission unit, and the wheel axle meshing transmission unit includes a driving wheel axle, a first driven wheel axle, a second driven wheel axle, an idler wheel axle, a first limiting wheel axle, a second limiting wheel axle, a reversing wheel axle, an adjusting wheel axle, a clutch wheel axle and a clutch motor; both ends of the driving wheel axle, the first driven wheel axle, the second driven wheel axle, the idler wheel axle, the first limiting wheel axle, the second limiting wheel axle, the reversing wheel axle, the adjusting wheel axle and the clutch wheel axle are all installed inside the carrier and can rotate circumferentially; the driving wheel axle and the second driven wheel axle, the clutch wheel axle and the idler wheel axle are meshed with each other, the idler wheel axle and the first driven wheel axle are meshed with each other, and the first driven wheel axle is meshed with each other. The shaft and the second driven wheel shaft are respectively meshed with the first screw rod and the second screw rod, the reversing wheel shaft and the first limiting wheel shaft are meshed with each other, the output shaft of the driving motor is connected to the driving wheel shaft, the clutch motor is fixedly mounted on the carrier, one end of the adjusting wheel shaft is fixed on the clutch motor, and the other end can be fixed on the carrier in a circumferentially rotatable manner, a section of the clutch wheel shaft is a bevel gear, and the thickness can enable the clutch wheel shaft to mesh with the second limiting wheel shaft, the driving wheel shaft and the reversing wheel shaft at the same time, a section of the clutch wheel shaft is a groove type, which can mesh with the gear section of the adjusting wheel shaft, and under the drive of the clutch motor, the adjusting wheel shaft drives the clutch wheel shaft to move axially in the mounting hole in the carrier.

2. The adjustment device for a shot-to-shot injection molding machine according to claim 1, characterized in that: The sliding foot mechanism also includes a first inclined iron, a second inclined iron, a first rotating shaft, a second rotating shaft, a sliding foot, a first screw rod, a second screw rod, a driving motor and a first spring and a second spring; two inclined surfaces are provided on both sides of the bottom of the sliding foot, and a mounting groove is provided in the middle position of the bottom; the first inclined iron and the second inclined iron are both provided with inclined surfaces adapted to the two inclined surfaces and are respectively installed on both sides of the bottom of the sliding foot; the gap of the platform is installed in the mounting groove; one end of the first screw rod and the second screw rod is fixed inside the platform and meshed with the wheel shaft meshing transmission unit, the first rotating shaft is rotatably installed inside the first inclined iron and meshed with the other end of the first screw rod, the second rotating shaft is rotatably installed inside the second inclined iron and meshed with the other end of the second screw rod, the spiral directions of the first screw rod and the second screw rod are opposite, the first spring and the second spring are installed in the placement groove and on the upper and lower sides of the platform, the driving motor is fixedly installed on the platform and the output shaft is connected to the wheel shaft meshing transmission unit, under the action of the driving motor, the first screw rod and / or the second screw rod are driven to move through the wheel shaft meshing transmission unit.

3. The adjustment device for a shot-to-shot injection molding machine according to claim 1, characterized in that: A portion of the gear section of the first limiting wheel axle and the second limiting wheel axle are both provided with a protruding rod, and the protruding rod is provided with a movable groove. The width of the movable groove of the first limiting wheel axle can match the shaft diameter of the first driven wheel axle, and the width of the movable groove of the second limiting wheel axle can match the shaft diameter of the second driven wheel axle. The first driven wheel axle and the second driven wheel axle are installed in the sliding groove of the carrier and can move left and right under the drive of the first limiting wheel axle and the second limiting wheel axle.

4. The adjustment device for a reverse injection molding machine according to claim 1, further characterized in that: It includes a control system, which is used to receive position signals from the four first position signal receivers and the four second position signal receivers, and to determine the position status of the second template and the third template. The control system is used to control the sliding foot mechanism to adjust the position of the second template and the third template.

5. The adjustment device for a reverse injection molding machine according to claim 1, characterized in that: The four first position signal generators send out four first position signals including D1 position signal, D2 position signal, D3 position signal and D4 position signal; the four second position signal generators send out four second position signals including E1 position signal, E2 position signal, E3 position signal and E4 position signal; the D1 position signal and the D3 position signal are respectively sent out by two first position signal generators installed at the upper and lower positions of one side of the second template, the D2 position signal and the D4 position signal are respectively sent out by the other two first position signal generators installed at the upper and lower positions of the other side of the second template; the E1 position signal and the E3 position signal are respectively sent out by two first position signal generators installed at the upper and lower positions of the other side of the second template. The four first position signals and the four second position signals are respectively emitted by two second position signal generators installed at the upper and lower positions of one side surface of the third template, and the E2 position signal and the E4 position signal are respectively emitted by the other two second position signal generators installed at the upper and lower positions of the other side surface of the third template; when the three templates are precisely molded, the four first position signals and the four second position signals are set to zero, and when the deviations of the four first position signals and the four second position signals are all less than the threshold value, it is the allowable error when the mold is closed; when the deviations of the four first position signals or the four second position signals are greater than the threshold value, the position of the second template or the third template is adjusted by the sliding foot mechanism until the deviations are all less than the threshold value.

6. The adjustment device for a reverse injection molding machine according to claim 5, characterized in that: When the deviation between the D1 position signal and the D2 position signal is greater than the threshold, and the deviation between the D3 position signal and the D4 position signal is less than the threshold, it is judged that the second template is in a backward state; when the deviation between the D1 position signal and the D2 position signal is less than the threshold, and the deviation between the D3 position signal and the D4 position signal is greater than the threshold, it is judged that the second template is in a forward state; when the deviation between the E1 position signal and the E2 position signal is greater than the threshold, and the deviation between the E3 position signal and the E4 position signal is less than the threshold, it is judged that the third template is in a backward state; when the deviation between the E1 position signal and the E2 position signal is less than the threshold, and the deviation between E3 and E4 is greater than the threshold, it is judged that the third template is in a forward state; when the D1 position signal, the D2 position signal, the D3 position signal and the D4 position signal are all greater than the threshold, it is judged that the height of the second template is too high or too low; when E1, E2, E3 and E4 are all greater than the threshold, it is judged that the height of the third template is too high or too low.

7. An adjustment device for a shot-to-shot injection molding machine according to claim 5 or 6, characterized in that: The threshold value ranges from 0.001 to 0.1 mm.

8. A method for controlling an adjustment device of a shot injection molding machine, wherein the adjustment device is the adjustment device of any one of claims 1 to 7, characterized in that: The following steps are involved: S1: a first position signal generator is set at the four corners of the second template, and a first position signal receiver is set on the first template accordingly; a second position signal generator is set at the four corners of the third template, and a second position signal receiver is set on the first template accordingly; S2: When the mold is precisely closed for the first time, the first position signal and the second position signal are set to zero, and the threshold is set; S3: During the mold closing process, the first position signal and the second position signal are processed and the positional relationship between the second template and the third template is determined; S4: adjusting the position of the second template and / or the third template by the sliding foot mechanism, and performing real-time monitoring and feedback of the positional relationship of the second template and / or the third template; S5: The molds between the templates are precisely assembled for injection molding.

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