Mold holding pressure alternating upper mold system

Abstract

The invention relates to the field of injection molding pressure-maintaining production equipment, and specifically refers to a mold pressure-maintaining alternating mold-loading system, comprising an injection molding machine and a control system, wherein rapid mold-changing tables are symmetrically arranged on both sides of the injection molding machine, and mold pressure-maintaining mechanisms are symmetrically arranged on both sides of the injection molding machine. The rapid mold-changing tables comprise a workbench, and a push-pull mechanism is arranged on the workbench. The push-pull mechanism is respectively provided with mold-changing roller mechanisms on both sides along the mold-feeding direction of the injection molding machine, and supporting roller mechanisms are respectively arranged on the movable mold magnetic template and the fixed mold magnetic template in the injection molding cavity of the injection molding machine, and a guide mechanism is arranged on the fixed mold magnetic template, and both sides of the guide mechanism are respectively connected with the mold pressure-maintaining mechanisms on both sides of the injection molding machine, and the mold pressure-maintaining mechanisms are placed on the mold-changing roller mechanisms and are alternately entered into the injection molding cavity through the push-pull mechanism drive and the guide mechanism guide to be extruded and injected through the movable mold magnetic template and the fixed mold magnetic template. The invention has high injection molding production efficiency, can maintain pressure outside the machine, has high workpiece output, and is convenient and fast to operate.

Description

Technical Field

[0001] The invention relates to the field of injection molding pressure-maintaining production equipment, in particular to a mold pressure-maintaining alternating upper mold system. Background Art

[0002] Injection molding machine, also known as injection molding machine, began to develop rapidly in plastic machinery with the advent of the first screw-type plastic injection molding machine in the 1950s. In modern production, a large number of plastic products are widely used in automobiles, home appliances, electronics, daily necessities, industrial materials and other fields. The application of injection molding machines has become indispensable. In recent years, with the advancement of Industry 4.0, the injection molding industry has also begun to develop step by step towards unmanned production, automated production, and flexible production. Chinese patent CN202439154U, named injection molding machine mold automatic replacement system, includes a mobile mold changing table, the mold changing table cooperates with the template mold changing frame of the injection molding machine, and the replaced mold is installed on the template mold changing frame through the mold changing table. The platform is provided with an electric control system, the mold-changing platform comprises a mobile platform body and a fixed platform, the mobile platform body is provided with at least one group of mold-changing rollers for moving the mold, and a mold positioning cylinder is provided between the mold-changing rollers; the mobile platform body is installed on a linear track of the fixed platform, a reduction motor I is also provided on the mobile platform body, the reduction motor I is connected to the ball screw on the fixed platform, and the mobile platform body is driven to move by the cooperation of the reduction motor I and the ball screw, the mold-changing platform comprises a mobile vehicle body, at least one group of mold-changing rollers for moving the mold is also provided on the mobile vehicle body, and a mold positioning cylinder is provided between the mold-changing rollers; the mobile vehicle body is installed on a guide rail on the ground, a reduction motor I is provided on the mobile vehicle body, and the reduction motor I drives the wheels of the mobile vehicle body to move on the guide rail The mold changing roller is connected to the reduction motor I through a belt or a chain. A transition mold changing platform is provided between the mold changing platform and the template mold changing frame of the injection molding machine. The transition mold changing platform includes a transition platform body. A transition mold changing roller for moving the mold is provided on the transition platform body. A reduction motor II is provided on the transition platform body. The reduction motor II is connected to the transition mold changing roller through a belt or a chain. The template mold changing frame is provided with a set on each of the fixed template and the movable template of the injection molding machine. The template mold changing frame is provided with a roller. The reduction motor III drives the roller to rotate through a chain or a belt. The mold is connected to the template mold changing frame through a mold clamp. The electric control system is a PLC control system. The above patent realizes automatic replacement of the mold. There are similar patents. Chinese patent CN204749113U is named as an automatic mold changing device for an injection molding machine, and Chinese patent CN109940824A is named as an automatic mold handling and mold changing system and method in an unmanned state, etc. However, in the above patents, when the mold is produced inside the injection molding machine, the mold needs to be pressure-maintained for a long time in the injection molding machine. During this operation, the injection molding machine cannot perform other work. The part can only be taken out for the next injection molding after a specific time has passed, which seriously affects the production efficiency and use efficiency of the injection molding machine. If two injection molding machines are used, although the overall mold changing efficiency is improved, the working efficiency of a single injection molding machine is still not improved, and the simultaneous operation of two injection molding machines also increases the production cost of the workpiece. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a mold pressure-maintaining and alternating mold-loading system with alternating injection molding, external pressure-maintaining, high production efficiency, convenient operation, and power and labor saving.

[0004] A mold pressure-maintaining alternating mold-up system comprises an injection molding machine and a control system, characterized in that: a quick mold-changing platform is symmetrically arranged on both sides of the injection molding machine, a mold pressure-maintaining mechanism is symmetrically arranged on both sides of the injection molding machine, the mold pressure-maintaining mechanism is located on the quick mold-changing platform, the quick mold-changing platform comprises a workbench, a push-pull mechanism is arranged on the workbench, the push-pull mechanism is respectively provided with a mold-changing roller mechanism on both sides along the mold feed direction of the injection molding machine, the push-pull mechanism and the mold-changing roller mechanism are respectively connected to the workbench, a supporting roller mechanism is respectively provided on the movable mold magnetic template and the fixed mold magnetic template in the injection molding cavity of the injection molding machine, a guiding mechanism is arranged on the fixed mold magnetic template, the supporting roller mechanism is connected to the movable mold magnetic template or the fixed mold magnetic template, and both sides of the supporting roller mechanism are respectively connected to the quick mold-changing platforms on both sides of the injection molding machine The upper mold-changing roller mechanism is docked, the guide mechanism is connected to the fixed mold magnetic template, and the two sides of the guide mechanism are respectively connected to the mold pressure-holding mechanisms on both sides of the injection molding machine. The mold pressure-holding mechanism is placed on the mold-changing roller mechanism, driven by the push-pull mechanism and guided by the guide mechanism, and alternately enters the injection cavity and is built into the supporting roller mechanism for extrusion injection through the movable mold magnetic template and the fixed mold magnetic template, so as to facilitate the mold pressure-holding mechanism on one side of the injection molding machine to go from the rapid mold-changing station to the injection molding machine for injection molding and then return to the rapid mold-changing station for pressure maintenance. At the same time, the mold pressure-holding mechanism on the other side of the injection molding machine goes from the rapid mold-changing station on the other side of the injection molding machine to the injection molding machine for injection molding and then returns to the rapid mold-changing station for pressure maintenance. The mold pressure-holding mechanism can provide the pressure required by the mold, and the mold pressure-holding mechanisms on both sides of the injection molding machine alternately enter the injection molding machine for injection molding, thereby improving the use efficiency of the injection molding machine.

[0005] The mold pressure-keeping mechanism of the present invention comprises a mold movable platen, a mold fixed platen, a cushion block and a mold magnetic platen. The mold movable platen and the mold fixed platen are arranged in parallel and spaced relation. Cushions are respectively arranged on both sides of the mold movable platen, and the cushion blocks are fixedly connected to the mold movable platen. Mold magnetic platens are respectively arranged on both sides of the mold fixed platen, and the mold magnetic platen is fixedly connected to the mold fixed platen. The mold magnetic platen is connected to a control system. The mold magnetic platen and the cushion blocks are tightly connected to the cushion blocks through the magnetic force of the mold magnetic platen so that a mold pressure-keeping space is formed between the mold movable platen and the mold fixed platen, so that when the mold to be produced is placed between the mold movable platen and the mold fixed platen, pressure-keeping surfaces are respectively formed in the middle of the mold movable platen and the middle of the mold fixed platen and cooperate with the outer surface of the mold, so as to facilitate the extrusion of the mold. The mold magnetic platen realizes the connection and separation of the mold movable platen and the mold fixed platen through the charging and demagnetization operation. The mold fixed platen and the mold fixed platen can tightly lock the mold because of the magnetization of the mold magnetic platen, so that the mold is convenient to be pressure-held by the mold pressure-keeping mechanism outside the injection molding machine.

[0006] The workbench described in the present invention is provided with a table plate, the table plate is fixedly connected to the workbench, the middle of the table plate extends to both sides to form a push-pull support plate, the push-pull support plate is fixedly connected to the table plate, a push-pull mechanism is provided in the middle of the table plate, the push-pull mechanism includes a push-pull linear guide, a push-pull slider, a ball screw, a motor, a nut, a nut mounting seat, a ball screw mounting plate and a push-pull pin, the lower end of the push-pull linear guide is fixedly connected to the table plate and the push-pull support plate, a ball screw is provided above the push-pull linear guide, the ball screw is parallel to the push-pull linear guide, ball screw mounting plates are provided at the front and rear ends of the push-pull linear guide, and the two ends of the ball screw are respectively provided with The cam is connected to the motor via a bearing, one end of the ball screw passes through the ball screw mounting plate and is fixedly connected to the output shaft of the motor via a coupling, the lower end of the ball screw mounting plate is fixedly connected to the push-pull support plate, the motor is fixedly connected to the push-pull support plate, the motor is connected to the control system, a nut is sleeved on the ball screw, the nut is fixedly connected to the nut mounting seat, the lower end of the nut mounting seat is slidably connected to the push-pull linear guide via a push-pull slider, a push-pull pin is provided at the upper end of the nut mounting seat, the push-pull pin is vertically fixedly connected to the nut mounting seat, the push-pull linear guide is provided with mold changing roller mechanisms on both sides along the mold feed direction of the injection molding machine, The mold-changing roller mechanism comprises a mold-changing roller support Ⅰ, a mold-changing roller support Ⅱ and an unpowered roller. The mold-changing roller support Ⅰ and the mold-changing roller support Ⅱ are arranged opposite to each other at intervals. The mold-changing roller support Ⅰ and the mold-changing roller support Ⅱ are respectively fixedly connected to the table. Unpowered rollers parallel to each other are arranged at intervals between the mold-changing roller support Ⅰ and the mold-changing roller support Ⅱ. The unpowered rollers are perpendicular to the push-pull linear guide rail. The two ends of the roller shaft of the unpowered roller are respectively fixedly connected to the mold-changing roller support Ⅰ and the mold-changing roller support Ⅱ. The mold pressure-keeping mechanism is placed on the mold-changing roller mechanism on both sides of the push-pull linear guide rail. The mold pressure-keeping mechanism is provided with a mold push-pull handle. The mold push-pull handle is L-shaped, one end of which is fixedly connected to the mold fixed template, and the other end is provided with a pin hole groove, the inner diameter of the pin hole groove is larger than the outer diameter of the push-pull pin, and the mold pressure holding mechanism is connected to the push-pull mechanism via the pin hole groove and the push-pull pin, so as to facilitate connecting the mold pressure holding mechanism with the push-pull mechanism by inserting the push-pull pin into the pin hole groove, so that when the motor drives the ball screw to rotate, the nut drives the nut mounting seat and then drives the push-pull pin to move linearly, and the push-pull pin drives the mold push-pull mechanism to move on the mold changing roller mechanism. At the same time, because the inner diameter of the pin hole groove is large, the mold pressure holding mechanism can have a certain moving distance in the direction perpendicular to the push-pull linear guide rail, which is convenient for subsequent injection molding.

[0007] The supporting roller mechanism of the present invention comprises a supporting roller bracket and an unpowered roller, the lower end of the movable mold magnetic template and the lower end of the fixed mold magnetic template are respectively provided with supporting roller brackets at intervals, the supporting roller bracket is L-shaped, the supporting roller bracket comprises a supporting plate and a fixed plate, the supporting plate is arranged in parallel with the movable mold magnetic template or the fixed mold magnetic template, an unpowered roller is arranged between the supporting plate and the movable mold magnetic template or the fixed mold magnetic template, a fixed plate is provided at the lower end of the supporting plate, the fixed plate is located below the unpowered roller, one end of the fixed plate is vertically fixedly connected to the supporting plate, and the other end is fixedly connected to the movable mold magnetic template or the fixed mold magnetic template, the two ends of the roller shaft of the unpowered roller are respectively fixedly connected to the supporting plate and the movable mold magnetic template or the fixed mold magnetic template, so as to facilitate the support of the mold pressure holding mechanism by the unpowered rollers on the movable mold magnetic template and the fixed mold magnetic template, and when the supporting roller mechanism cooperates with the mold changing roller mechanism, the mold pressure holding mechanism can be moved between the rapid mold changing table and the injection molding machine.

[0008] The guiding mechanism described in the present invention includes a traction guide rail and a floating mechanism. The upper and lower ends of the fixed mold magnetic template are respectively provided with traction guide rails, the traction guide rails are located above the unpowered roller, the traction guide rails are fixedly connected to the fixed mold magnetic template, two traction sliders are arranged on the traction guide rails at intervals, floating mechanisms are symmetrically arranged on both sides of the traction guide rails, the floating mechanisms on both sides of the traction guide rails are respectively connected to the mold pressure holding mechanisms on both sides of the injection molding machine, the floating mechanisms are slidably connected to the traction guide rails via traction sliders, and the upper and lower ends of the side of the mold fixed template that is not opposite to the mold movable template are respectively provided with linear grooves, the linear grooves cooperate with the traction guide rails and the width inside the linear grooves is greater than the width of the traction guide rails, so as to facilitate guiding the mold pressure holding mechanism into the injection molding machine through the guiding mechanism, and when the injection molding machine is closed, the traction guide rails are embedded in the linear grooves to avoid interference.

[0009] The floating mechanism of the present invention comprises a connecting seat, a first floating connecting member, a second floating connecting member, a connecting plate, a first screw, a second screw, a first spring, a second spring, a first pin shaft and a second pin shaft, the connecting seat is fixedly connected to the traction sliding block through screws, a slot is provided in the middle of the connecting seat, a first floating connecting member is provided in the middle of the connecting seat, a connecting plate is provided on the connecting seat, vertical limit pin holes are respectively provided at both ends of the first floating connecting member, a first screw hole is provided in the middle of the first floating connecting member which is perpendicular to the traction guide rail, one end of the first floating connecting member is inserted into the connecting seat and is hinged to the connecting seat through the first pin shaft, the upper and lower ends of the connecting plate are fixedly connected to the connecting seat through screws, a threaded hole is provided in the middle of the connecting plate, the first screw passes through the first spring, the threaded hole and the first screw hole in sequence to connect the connecting plate and the first floating connecting member, a connecting member slot is provided in the middle of the end of the second floating connecting member opposite to the connecting seat, and a second screw hole is provided at the other end, the other end of the first floating member is inserted into the connecting member slot of the second floating connecting member and is hinged to one end of the second floating connecting member through the second pin shaft, the mold fixed template The upper end and the lower end of the side facing the injection molding machine are respectively provided with limit screw holes, and the other end of the second floating member is fixedly connected to the mold fixed template through the second screw passing through the second spring, the second screw hole and the limit screw hole, so as to facilitate connecting the mold pressure holding mechanism with the guide mechanism through the floating mechanism. Under the condition of no external force, by adjusting the installation depth of the first screw, the first screw presses the first spring, the first spring generates thrust, and the first floating connector rotates due to the thrust of the first spring, away from the fixed mold magnetic template, and drives the second floating connector to generate with the fixed mold magnetic template. At the same time, the thrust generated by the second spring on the second floating connector ensures that the mold pressure holding mechanism is always tightly connected with the second floating connector during the movement. However, when the dynamic mold magnetic template and the fixed mold magnetic template of the injection molding machine are closed for injection molding, because the injection molding machine has a strong mold closing force, the thrust of the first spring and the second spring can be overcome. The dynamic mold magnetic template and the fixed mold magnetic template will tightly clamp the mold pressure holding mechanism for injection molding and pressure holding. When the injection molding machine opens the mold, due to the thrust of the first spring and the second spring, the mold pressure holding mechanism can maintain a certain floating distance from the fixed mold magnetic template.

[0010] The mold magnetic template of the present invention includes a magnetic template and a cushion block, wherein the magnetic template is fixedly connected to the cushion block, and the cushion block is fixedly connected to the mold fixed template, so as to increase the distance between the mold movable template and the mold fixed template through the cushion block to match molds of different sizes.

[0011] The present invention has the advantages of alternating injection molding, pressure maintenance outside the machine, high production efficiency, convenient operation, power saving and labor saving, etc. due to the adoption of the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 It is a partial cross-sectional view of the present invention.

[0014] Figure 3 It is a partial top view of the present invention.

[0015] Figure 4 The present invention Figure 3 Enlarged view of point A in the middle.

[0016] Figure 5 It is a structural schematic diagram of the connection between the mold pressure holding mechanism and the guide support mechanism in the present invention.

[0017] Figure 6 The present invention Figure 5 Enlarged view of point B in the middle.

[0018] Figure 7 The present invention Figure 5 Enlarged view of center C.

[0019] Figure 8 It is a structural schematic diagram of the rapid die-changing station in the present invention.

[0020] Fig. 9 It is a structural schematic diagram of the mold pressure holding mechanism in the present invention at one angle.

[0021] Fig.10 It is a structural schematic diagram of the mold pressure holding mechanism in the present invention from another angle.

[0022] Fig.11 It is a schematic diagram of the structure on the fixed mold wall plate in the guide support mechanism of the present invention.

[0023] Fig.12 It is a schematic structural diagram of the movable mold wall plate in the guide support mechanism of the present invention.

[0024] Fig.13 It is a structural schematic diagram of the floating mechanism in the present invention.

[0025] Fig.14 The present invention Fig.13 Exploded diagram. DETAILED DESCRIPTION

[0026] The present invention is described below in conjunction with the accompanying drawings and embodiments.

[0027] A mold pressure-maintaining alternating mold-up system, comprising an injection molding machine 1 and a control system, characterized in that: a quick mold-changing platform 4 is symmetrically provided on both sides of the injection molding machine 1, a mold pressure-maintaining mechanism 7 is symmetrically provided on both sides of the injection molding machine 1, the mold pressure-maintaining mechanism 7 is located on the quick mold-changing platform 4, the quick mold-changing platform 4 comprises a workbench 5, a push-pull mechanism 8 is provided on the workbench 5, the push-pull mechanism 8 is respectively provided with a mold-changing roller mechanism 9 on both sides along the mold-feeding direction of the injection molding machine 1, the push-pull mechanism 8 and the mold-changing roller mechanism 9 are respectively connected to the workbench 5, a supporting roller mechanism 29 is respectively provided on the movable mold magnetic template 27 and the fixed mold magnetic template 28 in the injection molding cavity 2 of the injection molding machine 1, the fixed mold magnetic template 28 is provided with a guiding mechanism 30, the supporting roller mechanism 29 is connected to the movable mold magnetic template 27 or the fixed mold magnetic template 28, and the two sides of the supporting roller mechanism 29 are respectively connected to the injection molding machine The mold changing roller mechanisms 9 on the fast mold changing tables 4 on both sides of the injection molding machine 1 are docked, the guide mechanism 30 is connected to the fixed mold magnetic template 27, and the two sides of the guide mechanism 30 are respectively connected to the mold pressure holding mechanisms 7 on both sides of the injection molding machine 1. The mold pressure holding mechanism 7 is placed on the mold changing roller mechanism 9, driven by the push-pull mechanism 8 and guided by the guide mechanism 30 to alternately enter the injection cavity 2 and be built in the supporting roller mechanism 29, and extruded and injected through the movable mold magnetic template 27 and the fixed mold magnetic template 28, so as to facilitate the mold pressure holding mechanism on one side of the injection molding machine to go from the fast mold changing table to the injection molding machine for injection molding and then return to the fast mold changing table for pressure holding. At the same time, the mold pressure holding mechanism on the other side of the injection molding machine goes from the fast mold changing table on the other side of the injection molding machine to the injection molding machine for injection molding and then returns to the fast mold changing table for pressure holding. The mold pressure holding mechanism can provide the pressure required by the mold, and the mold pressure holding mechanisms on both sides of the injection molding machine alternately enter the injection molding machine for injection molding, thereby improving the use efficiency of the injection molding machine.

[0028] The mold pressure holding mechanism 7 of the present invention comprises a mold movable platen 19, a mold fixed platen 20, a cushion block 23 and a mold magnetic platen 24, wherein the mold movable platen 19 and the mold fixed platen 20 are arranged in parallel and spaced relative to each other, cushion blocks 23 are respectively arranged on both sides of the mold movable platen 19, and the cushion blocks 23 are fixedly connected to the mold movable platen 19, and mold magnetic platens 24 are respectively arranged on both sides of the mold fixed platen 20, and the mold magnetic platen 24 is fixedly connected to the mold fixed platen 20, and the mold magnetic platen 24 is connected to the control system, and the mold magnetic platen 24 and the cushion block 23 are relatively connected to the mold The magnetic force of the magnetic template 24 is tightly connected with the pad 23 to form a mold pressure holding space between the mold movable template 19 and the mold fixed template 20, so that when the mold to be produced is placed between the mold movable template and the mold fixed template, pressure holding surfaces are formed in the middle of the mold movable template and the middle of the mold fixed template respectively and cooperate with the outer surface of the mold, which is convenient for extruding the mold. The mold magnetic template realizes the connection and separation of the mold movable template and the mold fixed template through the charging and demagnetization operation. The mold fixed template and the mold fixed template can tightly lock the mold because the mold magnetic template is magnetized, which is convenient for the mold to be pressurized by the mold pressure holding mechanism outside the injection molding machine.

[0029] The workbench 5 of the present invention is provided with a table 14, and the table 14 is fixedly connected to the workbench 5. The middle of the table 14 extends to both sides to form a push-pull support plate 21, and the push-pull support plate 21 is fixedly connected to the table 14. A push-pull mechanism 8 is provided in the middle of the table 14, and the push-pull mechanism 8 includes a push-pull linear guide 10, a push-pull slider, a ball screw 11, a motor 12, a nut, a nut mounting seat 13, a ball screw mounting plate 15 and a push-pull pin 16. The lower end of the push-pull linear guide 10 is connected to the table 14 and the push-pull support plate 2 1 is fixedly connected, a ball screw 11 is arranged above the push-pull linear guide 10, the ball screw 11 is parallel to the push-pull linear guide 10, ball screw mounting plates 15 are respectively arranged at the front and rear ends of the push-pull linear guide 10, the two ends of the ball screw 11 are respectively connected to the ball screw mounting plates 15 via bearings, one end of the ball screw 11 passes through the ball screw mounting plate 15 and is fixedly connected to the output shaft of the motor 12 via a coupling, the lower end of the ball screw mounting plate 15 is fixedly connected to the push-pull support plate 21, the motor 12 is fixedly connected to the push-pull support plate 21 is fixedly connected, the motor 12 is connected to the control system, a nut is sleeved on the ball screw 11, the nut is fixedly connected to the nut mounting seat 13, the lower end of the nut mounting seat 13 is slidably connected to the push-pull linear guide 10 through a push-pull slider, a push-pull pin 16 is provided at the upper end of the nut mounting seat 13, the push-pull pin 16 is vertically fixedly connected to the nut mounting seat 13, and the push-pull linear guide 10 is respectively provided with a mold changing roller mechanism 9 on both sides along the mold feed direction of the injection molding machine 1, and the mold changing roller mechanism 9 includes a mold changing roller bracket Ⅰ17, a mold changing roller bracket Ⅰ18, a mold changing roller bracket Ⅰ19, a mold changing roller bracket Ⅰ20, a mold changing roller bracket Ⅰ21, a mold changing roller bracket Ⅰ22, a mold changing roller bracket Ⅰ23, a mold changing roller bracket Ⅰ24, a mold changing roller bracket Ⅰ25, a mold changing roller bracket Ⅰ26, a mold changing roller bracket Ⅰ27, a mold changing roller bracket Ⅰ28, a mold changing roller bracket Ⅰ29, a mold changing roller bracket Ⅰ21, a mold changing roller bracket Ⅰ29, a mold changing roller bracket Ⅰ21, a mold changing roller bracket Ⅰ21, a mold changing roller bracket Ⅰ21, a mold changing roller bracket Ⅰ22, a mold changing roller bracket Ⅰ23, a mold changing roller bracket Ⅰ24, a mold changing roller bracket Ⅰ25, a mold changing roller bracket Ⅰ26, a mold changing roller bracket Ⅰ27, a mold changing roller bracket Ⅰ28, a mold changing roller bracket Ⅰ29 ... Roller bracket II 22 and unpowered roller 18, the mold-changing roller bracket I 17 and the mold-changing roller bracket II 22 are arranged opposite to each other at intervals, the mold-changing roller bracket I 17 and the mold-changing roller bracket II 22 are respectively fixedly connected to the table 14, and mutually parallel unpowered rollers 18 are arranged between the mold-changing roller bracket I 17 and the mold-changing roller bracket II 22, the unpowered roller 18 is perpendicular to the push-pull linear guide rail 10, and the roller shaft ends of the unpowered roller 18 are respectively fixedly connected to the mold-changing roller bracket I 17 and the mold-changing roller bracket II 22,

[0030] The mold pressure holding mechanism 7 is placed on the mold changing roller mechanism 9 on both sides of the push-pull linear guide 10. The mold pressure holding mechanism 7 is provided with a mold push-pull handle 25. The mold push-pull handle 25 is L-shaped. One end of the mold push-pull handle 25 is fixedly connected to the mold fixed template 20, and the other end is provided with a pin hole groove 26. The inner diameter of the pin hole groove 26 is larger than the outer diameter of the push-pull pin 16. The mold pressure holding mechanism 7 is connected to the push-pull mechanism 8 through the pin hole groove 26 and the push-pull pin 16, so as to facilitate the connection of the mold pressure holding mechanism with the push-pull mechanism by inserting the push-pull pin into the pin hole groove. When the motor drives the ball screw to rotate, the nut drives the nut mounting seat and then drives the push-pull pin to move linearly. The push-pull pin drives the mold push-pull mechanism to move on the mold changing roller mechanism. At the same time, because the inner diameter of the pin hole groove is large, the mold pressure holding mechanism can have a certain moving distance in the direction perpendicular to the push-pull linear guide, which is convenient for subsequent injection molding.

[0031] The support roller mechanism 29 of the present invention comprises a support roller bracket 33 and an unpowered roller. The lower ends of the movable mold magnetic template 27 and the lower ends of the fixed mold magnetic template 28 are respectively provided with support roller brackets 33 at intervals. The support roller bracket 33 is L-shaped. The support roller bracket 33 comprises a support plate and a fixed plate. The support plate is arranged in parallel with the movable mold magnetic template 27 or the fixed mold magnetic template 28. An unpowered roller is arranged between the support plate and the movable mold magnetic template 27 or the fixed mold magnetic template 28. A fixed plate is arranged at the lower end of the support plate. The fixed plate is located below the unpowered roller, one end of the fixed plate is vertically fixedly connected to the support plate, and the other end is fixedly connected to the movable mold magnetic template 27 or the fixed mold magnetic template 28. The two ends of the roller shaft of the unpowered roller are respectively fixedly connected to the support plate and the movable mold magnetic template 27 or the fixed mold magnetic template 28, so as to facilitate supporting the mold pressure holding mechanism through the unpowered rollers on the movable mold magnetic template and the fixed mold magnetic template. When the supporting roller mechanism cooperates with the mold changing roller mechanism, the mold pressure holding mechanism can be moved between the quick mold changing table and the injection molding machine.

[0032] The guide mechanism 30 of the present invention includes a traction guide rail 34 and a floating mechanism 35. The upper and lower ends of the fixed mold magnetic template 28 are respectively provided with traction guide rails 34, and the traction guide rail 34 is located above the unpowered roller. The traction guide rail 34 is fixedly connected to the fixed mold magnetic template 28. Two traction sliders are arranged on the traction guide rail 34 at intervals. Floating mechanisms 35 are symmetrically arranged on both sides of the traction guide rail 34. The floating mechanisms 35 on both sides of the traction guide rail 34 are respectively connected to the mold pressure holding mechanisms 7 on both sides of the injection molding machine 1. The floating mechanism 35 is slidably connected to the traction guide rail 34 through the traction sliders. The upper and lower ends of the side of the mold fixed template 20 that is not opposite to the mold movable template 19 are respectively provided with linear grooves 48. The linear groove 48 cooperates with the traction guide rail 34 and the width inside the linear groove 48 is greater than the width of the traction guide rail 34, so as to facilitate guiding the mold pressure holding mechanism into the injection molding machine through the guide mechanism. When the injection molding machine is closed, the traction guide rail is embedded in the linear groove to avoid interference.

[0033] The floating mechanism 35 of the present invention comprises a connecting seat 36, a first floating connecting member 37, a second floating connecting member 38, a connecting plate 39, a first screw 40, a second screw 41, a first spring 42, a second spring 43, a first pin 44 and a second pin 45. The connecting seat 36 is fixedly connected to the traction slider by screws, a slot is provided in the middle of the connecting seat 36, a first floating connecting member 37 is provided in the middle of the connecting seat 36, a connecting plate 39 is provided on the connecting seat 36, vertical limit pin holes 46 are respectively provided at both ends of the first floating connecting member 37, a stopper 46 is provided in the middle of the first floating connecting member 37, and a stopper 46 is provided in the middle of the first floating connecting member 37. The first floating connector 37 is provided with a first vertical screw hole 47, one end of the first floating connector 37 is inserted into the connector seat 36 and is hinged to the connector seat 36 through the first pin shaft 44, the upper and lower ends of the connecting plate 36 are fixedly connected to the connector seat 36 by screws, a threaded hole is provided in the middle of the connecting plate 36, the first screw 40 passes through the first spring 42, the threaded hole, and the first screw hole 47 in sequence to connect the connecting plate 39 with the first floating connector 37, the second floating connector 38 is provided with a connector slot in the middle of one end opposite to the connector seat 36, and a second screw hole is provided at the other end, the other end of the first floating connector 37 is inserted into the connector of the second floating connector 38 The connector slot is hinged with one end of the second floating connector 38 through the second pin shaft 45. The upper and lower ends of the mold fixed plate facing the injection molding machine are respectively provided with limit screw holes. The other end of the second floating connector 38 is fixedly connected to the mold fixed plate 20 through the second screw 41 passing through the second spring 43, the second screw hole and the limit screw hole, so as to facilitate connecting the mold pressure holding mechanism with the guide mechanism through the floating mechanism. Under the condition of no external force, by adjusting the installation depth of the first screw, the first screw is pressed against the first spring, the first spring generates a thrust, and the first floating connector is rotated by the thrust of the first spring, away from the fixed mold magnetic mold plate, and drives the second floating connector and the fixed mold magnetic template to produce a displacement away from each other; at the same time, the thrust generated by the second spring on the second floating connector ensures that the mold pressure holding mechanism is always tightly connected with the second floating connector during the movement process, but when the dynamic mold magnetic template and the fixed mold magnetic template of the injection molding machine are injection-molded, because the injection molding machine has a large mold-closing force, it can overcome the thrust of the first spring and the second spring, and the dynamic mold magnetic template and the fixed mold magnetic template will tightly clamp the mold pressure holding mechanism for injection molding and pressure holding. When the injection molding machine opens the mold, due to the thrust of the first spring and the second spring, the mold pressure holding mechanism can maintain a certain floating distance from the fixed mold magnetic template.

[0034] The mold magnetic template 24 of the present invention includes a magnetic template and a pad, wherein the magnetic template is fixedly connected to the pad, and the pad is fixedly connected to the mold fixed template 20, so as to increase the distance between the mold movable template and the mold fixed template through the pad to match molds of different sizes.

[0035] As attached Figure 1 To the attached Fig.14The injection molding machine in the present invention is an injection molding machine in the prior art. A dynamic mold magnetic template and a fixed mold magnetic template are arranged between the dynamic mold wall panel and the fixed mold wall panel in the injection molding machine. The dynamic mold magnetic template is fixedly connected to the dynamic mold wall panel, and the fixed mold magnetic template is fixedly connected to the fixed mold wall panel. The dynamic mold magnetic template and the fixed mold magnetic template are respectively connected to a control system. The control system can be a PLC control system. Quick mold change tables are symmetrically installed on both sides of the injection molding machine. The two ends of the unpowered rollers of the support roller mechanism in the injection molding machine are respectively connected to the unpowered rollers on the quick mold change tables on both sides of the injection molding machine at the same height. The push-pull support plates on the quick mold change tables on both sides of the injection molding machine extend into the injection molding machine to facilitate motor drive. The ball screw drives the nut mounting seat and then drives the mold pressure holding mechanism to move between the quick mold change mechanism and the supporting roller mechanism. In the prior art, the mold is generally divided into two pieces, which can be separated and combined. The workpiece can be made by combining them together. The mold is installed in the mold pressure holding mechanism. The mold movable template and the mold fixed template can be closed and opened by charging and demagnetizing the mold magnetic template. When the mold magnetic template is magnetized, a pressure holding surface can be formed between the mold fixed template and the mold movable template, and the mold between the mold fixed template and the mold movable template can be pressed. The side of the mold fixed template and the mold movable template relative to the mold can match the outer surface of the mold, so that the mold can be injected in the injection molding machine after injection. The pressure is maintained in the mold pressure-maintaining mechanism. When the mold pressure-maintaining mechanism enters the injection molding machine for injection molding, the mold pressure-maintaining mechanism, on the one hand, because the inner diameter of the pin hole groove on the mold push-pull handle is larger than the outer diameter of the push-pull pin, the push-pull pin can move slightly in the direction perpendicular to the traction guide rail. On the other hand, the first floating connection member on the floating mechanism can drive the second floating connection member to move in the direction perpendicular to the traction guide rail through the first spring and the second spring. In this way, the mold pressure-maintaining mechanism has a push-pull handle at one end and is connected to the second floating connection member at the other end. The mold pressure-maintaining mechanism can move a certain distance perpendicular to the traction guide rail. When the injection molding machine is closed, the external force enables the mold pressure-maintaining mechanism to overcome the first spring and the second spring. The thrust of the first spring and the second spring fits with the movable mold magnetic template and the fixed mold magnetic template. After the external force disappears, the rebound force of the first spring and the second spring can keep a certain distance between the mold pressure holding mechanism and the fixed mold magnetic template. Then the injection molding machine opens the mold, starts the motor, and the mold pressure holding mechanism returns to the quick mold change table driven by the mold push-pull handle. The mold pressure holding mechanism on the quick mold change table on the other side of the injection molding machine moves into the injection molding machine. Specifically, the steps are as follows: there is no mold in the injection molding machine, and it is in the mold opening state. The left mold pressure holding mechanism is placed on the left quick mold change table of the injection molding machine, and the right mold pressure holding mechanism is placed on the right quick mold change table of the injection molding machine.

[0036] Step 1: Start the motor on the left quick mold change table, push the left mold pressure holding mechanism into the injection molding machine, and stop when it is in place;

[0037] Step 2: The injection molding machine closes the mold, the movable mold magnetic template and the fixed mold magnetic template clamp the left mold pressure holding mechanism, the injection molding machine injects, and the left mold pressure holding mechanism holds the mold pressure at the same time;

[0038] Step 3: The movable mold magnetic template and the fixed mold magnetic template release the left mold pressure holding mechanism, and the injection molding machine opens the mold;

[0039] Step 4: The push-pull mechanism of the left quick mold changer pulls the left mold pressure-holding mechanism out into place. While the left mold pressure-holding mechanism starts to be pulled out, the right quick mold changer pushes the right mold pressure-holding mechanism into the injection molding machine and stops after it is in place.

[0040] Step 5: The injection molding machine closes the mold, the movable mold magnetic template and the fixed mold magnetic template clamp the right mold pressure holding mechanism, the injection molding machine injects, and at the same time, the right mold pressure holding mechanism holds the mold pressure;

[0041] Step 6: The movable mold magnetic template and the fixed mold magnetic template release the mold pressure holding mechanism on the right side, and the injection molding machine opens the mold;

[0042] Step 7: The push-pull mechanism of the right quick mold change station pulls the right mold pressure-holding mechanism out into place; while the right mold pressure-holding mechanism starts to be pulled out, the left quick mold change station pushes the left mold pressure-holding mechanism into the injection molding machine and stops after it is in place;

[0043] Step 8: The injection molding machine closes the mold, and the movable mold magnetic template and the fixed mold magnetic template clamp the left mold pressure holding mechanism;

[0044] Step 9: At this time, the pressure holding mechanism of the left mold has reached the pressure holding time requirement, the pressure holding mechanism of the left mold is released, the injection molding machine pulls the pressure holding mechanism of the left mold apart, and takes out the workpiece;

[0045] Step 10: After taking out, the injection molding machine closes the mold, and the injection molding machine injects the mold. At the same time, the mold pressure holding mechanism on the left side holds the mold pressure;

[0046] Step 11: The movable mold magnetic template and the fixed mold magnetic template release the left mold pressure holding mechanism, and the injection molding machine opens the mold;

[0047] Step 12: The push-pull mechanism of the left quick mold changer pulls the left mold pressure-holding mechanism out into place. While the left mold pressure-holding mechanism starts to be pulled out, the right quick mold changer pushes the right mold pressure-holding mechanism into the injection molding machine and stops after it is in place.

[0048] Step 13: The injection molding machine closes the mold, and the movable mold magnetic template and the fixed mold magnetic template clamp the right mold pressure holding mechanism;

[0049] Step 14: At this time, the pressure holding mechanism of the right mold has reached the pressure holding time requirement, the pressure holding mechanism of the right mold is released, and the injection molding machine pulls open the pressure holding mechanism of the right mold to take out the workpiece;

[0050] Step 15: After taking out, the injection molding machine closes the mold, and the injection molding machine injects the mold. At the same time, the mold pressure holding mechanism on the right side holds the mold pressure;

[0051] Step 16: The push-pull mechanism of the right quick mold changing station pulls the right mold pressure holding mechanism into place. When the right mold pressure holding mechanism starts to be pulled out, the left quick mold changing station pushes the left mold pressure holding mechanism into the injection molding machine and stops after it is in place; repeat steps 8-16; It can be seen from the above that by arranging quick mold changing stations on both sides of the injection molding machine, the mold is installed in the mold pressure holding mechanism. When the left mold pressure holding mechanism is injected and pressure-holding, it can be pushed out in time, and the right mold pressure holding mechanism is pushed into the injection molding machine. After the injection and pressure-holding, the right mold pressure holding mechanism is pushed out, and the left mold pressure holding mechanism can be decompressed again, the workpiece is taken out, and injection and pressure-holding are performed, and then pushed out, the right mold pressure holding mechanism is pushed into the injection molding machine to decompress, the workpiece is taken out, and injection and pressure-holding are performed, and so on, the mold pressure holding mechanisms on the left and right sides of the injection molding machine are alternately entered into the injection molding machine, which greatly improves the production efficiency and utilization rate of the injection molding machine and reduces the production cost of the workpiece.

[0052] The present invention has the advantages of alternating injection molding, pressure maintenance outside the machine, high production efficiency, convenient operation, power saving and labor saving, etc. due to the adoption of the above structure.

Claims

1. A mold pressure-maintaining alternating mold-on system, comprising an injection molding machine and a control system, characterized in that: The injection molding machine is symmetrically provided with a quick mold changing table on both sides, and the injection molding machine is symmetrically provided with a mold pressure holding mechanism on both sides, and the mold pressure holding mechanism is located on the quick mold changing table. The quick mold changing table includes a workbench, and the workbench is provided with a push-pull mechanism, and the push-pull mechanism is respectively provided with a mold changing roller mechanism on both sides along the mold feeding direction of the injection molding machine, and the push-pull mechanism and the mold changing roller mechanism are respectively connected to the workbench, and the movable mold magnetic template and the fixed mold magnetic template in the injection cavity of the injection molding machine are respectively provided with a supporting roller mechanism, and the fixed mold magnetic template is provided with a guiding mechanism, and the supporting roller mechanism is connected to the movable mold magnetic template or the fixed mold magnetic template, and the two sides of the supporting roller mechanism are respectively connected to the mold changing roller mechanism on the quick mold changing tables on both sides of the injection molding machine. The guide mechanism is connected to the fixed mold magnetic template, and the two sides of the guide mechanism are respectively connected to the mold pressure holding mechanisms on both sides of the injection molding machine. The mold pressure holding mechanism is placed on the mold changing roller mechanism and is driven by the push-pull mechanism and guided by the guide mechanism to alternately enter the injection cavity and be built into the supporting roller mechanism for extrusion injection molding through the movable mold magnetic template and the fixed mold magnetic template. A table is provided on the workbench, and the table is fixedly connected to the workbench. The middle of the table extends to both sides to form a push-pull support plate, and the push-pull support plate is fixedly connected to the table. A push-pull mechanism is provided in the middle of the table, and the push-pull mechanism includes a push-pull linear guide rail, a push-pull slider, a ball screw, a motor, a nut, a nut mounting seat, a ball screw mounting plate and a push-pull pin. The lower end of the push-pull linear guide is fixedly connected to the table plate and the push-pull support plate, a ball screw is provided above the push-pull linear guide, the ball screw is parallel to the push-pull linear guide, ball screw mounting plates are respectively provided at the front and rear ends of the push-pull linear guide, the two ends of the ball screw are respectively connected to the ball screw mounting plates via bearings, one end of the ball screw passes through the ball screw mounting plate and is fixedly connected to the output shaft of the motor via a coupling, the lower end of the ball screw mounting plate is fixedly connected to the push-pull support plate, the motor is fixedly connected to the push-pull support plate, the motor is connected to the control system, a nut is sleeved on the ball screw, the nut is fixedly connected to the nut mounting seat, the lower end of the nut mounting seat is connected to the push-pull linear guide slide via a push-pull slider Dynamic connection, a push-pull pin is provided on the upper end of the nut mounting seat, and the push-pull pin is vertically fixedly connected to the nut mounting seat, and the push-pull linear guide rail is respectively provided with a mold-changing roller mechanism on both sides along the mold feed direction of the injection molding machine, and the mold-changing roller mechanism comprises a mold-changing roller bracket Ⅰ, a mold-changing roller bracket Ⅱ and an unpowered roller, and the mold-changing roller bracket Ⅰ and the mold-changing roller bracket Ⅱ are arranged relative to each other at intervals, and the mold-changing roller bracket Ⅰ and the mold-changing roller bracket Ⅱ are respectively fixedly connected to the table, and mutually parallel unpowered rollers are arranged at intervals between the mold-changing roller bracket Ⅰ and the mold-changing roller bracket Ⅱ, and the unpowered roller is perpendicular to the push-pull linear guide rail, and the two ends of the roller shaft of the unpowered roller are respectively fixedly connected to the mold-changing roller bracket Ⅰ and the mold-changing roller bracket Ⅱ.

2. The mold pressure-maintaining alternating upper mold system according to claim 1, characterized in that: The mold pressure holding mechanism includes a mold movable platen, a mold fixed platen, a cushion block and a mold magnetic platen. The mold movable platen and the mold fixed platen are arranged in parallel and spaced apart from each other. Cushions are respectively provided on both sides of the mold movable platen, and the cushion blocks are fixedly connected to the mold movable platen. Mold magnetic platens are respectively provided on both sides of the mold fixed platen, and the mold magnetic platens are fixedly connected to the mold fixed platen. The mold magnetic platen is connected to a control system, and the mold magnetic platen and the cushion block are tightly connected to each other through the magnetic force of the mold magnetic platen so that a mold pressure holding space is formed between the mold movable platen and the mold fixed platen.

3. The mold pressure-maintaining alternating upper mold system according to claim 1, characterized in that: The mold pressure holding mechanism is placed on the mold changing roller mechanism on both sides of the push-pull linear guide rail. The mold pressure holding mechanism is provided with a mold push-pull handle. The mold push-pull handle is L-shaped. One end of the mold push-pull handle is fixedly connected to the mold fixed template, and the other end is provided with a pin hole groove. The inner diameter of the pin hole groove is larger than the outer diameter of the push-pull pin. The mold pressure holding mechanism is connected to the push-pull mechanism via the pin hole groove and the push-pull pin.

4. A mold pressure-maintaining alternating upper mold system according to claim 1 or 2, characterized in that: The supporting roller mechanism comprises a supporting roller bracket and an unpowered roller, the lower end of the movable mold magnetic template and the lower end of the fixed mold magnetic template are respectively provided with supporting roller brackets at intervals, the supporting roller bracket is L-shaped, the supporting roller bracket comprises a supporting plate and a fixed plate, the supporting plate is arranged in parallel with the movable mold magnetic template or the fixed mold magnetic template, an unpowered roller is arranged between the supporting plate and the movable mold magnetic template or the fixed mold magnetic template, a fixed plate is provided at the lower end of the supporting plate, the fixed plate is located below the unpowered roller, one end of the fixed plate is vertically fixedly connected to the supporting plate, and the other end is fixedly connected to the movable mold magnetic template or the fixed mold magnetic template, and the two ends of the roller shaft of the unpowered roller are respectively fixedly connected to the supporting plate and the movable mold magnetic template or the fixed mold magnetic template.

5. A mold pressure-maintaining alternating upper mold system according to claim 2 or 3, characterized in that: The guiding mechanism comprises a traction guide rail and a floating mechanism. The upper and lower ends of the fixed mold magnetic template are respectively provided with traction guide rails, the traction guide rails are located above the unpowered roller, the traction guide rails are fixedly connected to the fixed mold magnetic template, two traction sliders are arranged on the traction guide rails at intervals, floating mechanisms are symmetrically arranged on both sides of the traction guide rails, the floating mechanisms on both sides of the traction guide rails are respectively connected to the mold pressure holding mechanisms on both sides of the injection molding machine, the floating mechanism is slidably connected to the traction guide rails via traction sliders, and linear grooves are respectively arranged on the upper and lower ends of the side of the mold fixed template that is not opposite to the mold movable template, the linear grooves cooperate with the traction guide rails and the width inside the linear grooves is greater than the width of the traction guide rails.

6. The mold pressure-maintaining alternating upper mold system according to claim 5, characterized in that: The floating mechanism includes a connecting seat, a first floating connecting piece, a second floating connecting piece, a connecting plate, a first screw, a second screw, a first spring, a second spring, a first pin shaft and a second pin shaft, the connecting seat is fixedly connected to the traction slider via screws, a slot is provided in the middle of the connecting seat, a first floating connecting piece is provided in the middle of the connecting seat, a connecting plate is provided on the connecting seat, vertical limit pin holes are provided at both ends of the first floating connecting piece, a first screw hole perpendicular to the traction guide rail is provided in the middle of the first floating connecting piece, one end of the first floating connecting piece is inserted into the connecting seat and hinged with the connecting seat via the first pin shaft, and the upper and lower ends of the connecting plate are fixed to the connecting seat via screws Fixed connection, a threaded hole is provided in the middle of the connecting plate, the first screw passes through the first spring, the threaded hole, and the first screw hole in sequence to connect the connecting plate with the first floating connecting piece, a connecting piece slot is provided in the middle of the end of the second floating connecting piece opposite to the connecting seat, and a second screw hole is provided at the other end, the other end of the first floating connecting piece is inserted into the connecting piece slot of the second floating connecting piece and is hinged to one end of the second floating connecting piece through the second pin shaft, and limiting screw holes are respectively provided at the upper and lower ends of the side of the mold fixed template facing the injection molding machine, and the other end of the second floating connecting piece is fixedly connected to the mold fixed template through the second screw passing through the second spring, the second screw hole and the limiting screw hole.

7. The mold pressure-maintaining alternating upper mold system according to claim 2, characterized in that: The mold magnetic template comprises a magnetic template and a cushion block, wherein the magnetic template is fixedly connected to the cushion block, and the cushion block is fixedly connected to the mold fixed template.

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