Upper die driving assembly, pressing unit and pressing method

Abstract

The invention relates to the technical field of molds, and discloses an upper mold driving assembly, a pressing unit and a pressing method. In the upper mold driving assembly, a movable mold plate is arranged below a fixed mold plate and is opposite to the fixed mold plate; the lifter is arranged on the fixed mold plate; the action end of the lifter is connected with the movable template and is used for driving the movable template to vertically lift; the lifter comprises a speed reducer and a lifting rod; the first end of the lifting rod is fixedly connected with the movable template; a rack is formed on a rod body of the lifting rod; a rack of the lifting rod is meshed with a driving gear in the speed reducer to form transmission; and a driving gear of the speed reducer drives the lifting rod to lift to drive the movable template to lift synchronously. In the pressing method, at least two materials in the pressing tool are laminated by adopting the pressing unit. According to the technical scheme, the lifting positions of the movable mold plate and the upper mold on the movable mold plate can be precisely controlled. The press-fit depth and the press-fit speed of the upper die driving assembly can be adjusted in time according to specific working conditions and can be adjusted at any time. And the pressing operation can be effectively controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to an upper mold driving assembly, a pressing unit and a pressing method. BACKGROUND

[0002] The automobile IP decorative plate is also commonly known as an instrument panel decorative plate, which is used for decoration of the interior of an automobile. The current mainstream process of the IP decorative plate mainly involves covering a soft material, such as leather or cloth, on the surface of an instrument panel. The leather and the skeleton can be bonded together through the covering process. In the production and manufacturing of the IP decorative plate, the pressing of the soft material and the skeleton is mainly realized by a pressing device.

[0003] In the pressing device, an upper mold assembly is an important mechanism, which usually needs to cooperate with a pressing tool to perform a pressing operation. Specifically, the driving part of the upper mold assembly is combined and adapted with various components to realize high-precision linear motion, and the linear motion is further used to realize the pressing operation.

[0004] In the current upper mold assembly of an industrial device, a cylinder is mostly used as a driving power source. In combination with the actual working conditions, through analysis and research, it is found that the pressing position and the pressing speed of the upper mold assembly cannot be conveniently adjusted or cannot be adjusted at any time under the driving of the prior art, and most pressing assemblies are in a special machine mode, and the pressing tool cannot be replaced. SUMMARY

[0005] The present application provides an upper mold driving assembly, a pressing unit and a pressing method to solve the above technical problems of the prior art that the adjustment effect of the pressing position and the pressing speed is poor.

[0006] According to a first aspect of the present application, an embodiment provides an upper mold driving assembly, comprising:

[0007] a fixed mold plate;

[0008] a movable mold plate arranged below the fixed mold plate and opposite to the fixed mold plate; and

[0009] a lifter arranged on the fixed mold plate; an action end of the lifter is connected to the movable mold plate, and the lifter is used to drive the movable mold plate to vertically ascend and descend;

[0010] The lifter comprises:

[0011] a first servo motor;

[0012] a speed reducer in transmission connection with the first servo motor; and

[0013] a lifting rod vertically arranged; a first end of the lifting rod is fixedly connected to the movable mold plate;

[0014] And, a rod body of the lifting rod is formed with a rack; the rack of the lifting rod is engaged with a driving gear in a speed reducer to form a transmission; the driving gear of the speed reducer drives the lifting rod to lift and simultaneously drives the movable die plate to lift.

[0015] Preferably, the lifter comprises:

[0016] a first lifter; and

[0017] a second lifter;

[0018] Preferably, in the upper die driving assembly, the first lifter is arranged at a first end of the fixed die plate, and the second lifter is arranged at a second end of the fixed die plate; the first lifter and the second lifter are identical in structure and are cooperated with each other to synchronously lift the movable die plate; and / or,

[0019] Preferably, in the upper die driving assembly, the first lifter is arranged at a first end of the fixed die plate, and the second lifter is arranged at a second end of the fixed die plate; the first lifter and the second lifter share a same first servo motor, the first servo motor is in transmission connection with a speed reducer matched with the first lifter and a speed reducer matched with the second lifter through a transmission shaft, and the first lifter and the second lifter are cooperated with each other to synchronously lift the movable die plate.

[0020] Preferably, the movable die plate is fixed with an upper die locking mechanism for locking the upper die; the upper die locking mechanism is arranged in pairs, and each upper die locking mechanism comprises:

[0021] a locking cylinder fixedly connected to a plate surface of the movable die plate; and

[0022] a locking plug arranged on the plate surface of the movable die plate; a first end of the locking plug is connected with a piston rod of the locking cylinder, and is used for moving to lock or unlock the locking block;

[0023] Preferably, the locking block moves to a moving path of the locking plug, the locking plug moves towards the locking block and is inserted into a locking hole of the locking block to lock the locking block, or the locking plug moves away from the locking block and is withdrawn from the locking hole of the locking block to unlock the locking block.

[0024] Preferably, the locking plug is arranged on an upper die fixed locking block base plate, the upper die fixed locking block base plate is fixed with a guide block for guiding the movement of the locking plug; the guide block is fixed on both sides of the locking plug and is arranged along the moving path of the locking plug.

[0025] Preferably, a safety cylinder is fixed on the mold locking insert block, the safety cylinder is vertically arranged, and a first safety pin is connected to the piston rod of the safety cylinder; a first insertion hole is arranged on the mold locking block base plate, and the first safety pin is inserted into the first insertion hole to maintain the mold locking insert block in the state of locking the mold locking block.

[0026] Preferably, the mold locking block is in the shape of an I-shaped structure, and the mold locking insert block is inserted into the locking holes on both sides of the I-shaped mold locking block to lock the I-shaped mold locking block.

[0027] Preferably, the safety lock mechanism is arranged on the fixed mold plate and the movable mold plate; the safety lock mechanism is used to lock the movable mold plate fixedly connected to the fixed mold plate and prevent the movable mold plate from falling.

[0028] Preferably, the mold driving assembly further comprises a guide mechanism for guiding the lifting of the movable mold plate; the guide mechanism comprises guide columns and / or linear bearings.

[0029] The guide columns are arranged in pairs and vertically arranged below the fixed mold plate; the first end of each guide column is fixedly connected to the fixed mold plate, and the second end penetrates the movable mold plate and is connected to the guide column adjusting module.

[0030] The linear bearing is sleeved on the guide column; the linear bearing is fixed on the movable mold plate and used to guide the linear lifting movement of the movable mold plate.

[0031] According to a second aspect of the present application, an embodiment provides a pressing unit, comprising:

[0032] The mold driving assembly according to any one of the above;

[0033] The mold driving assembly according to any one of the above;

[0034] The mold driving assembly according to any one of the above;

[0035] The mold driving assembly according to any one of the above;

[0036] According to a third aspect of the present application, an embodiment provides a pressing method, which uses the above pressing unit to perform the covering of at least two materials in the pressing tool; the pressing method comprises the following steps:

[0037] S1. The lifter drives the movable mold plate and the mold fixed below the movable mold plate to descend through the cooperation of the driving gear and the rack; the lifter is driven by a first servo motor, and the first servo motor controls the position and speed of the mold descending;

[0038] S2. The mold descends to the final pressing position and is combined with the lower mold to form a pressing tool;

[0039] S3. In the laminating tool, the first material is laminated to the second material under the pressure of the laminating unit.

[0040] In the technical solution of the present invention, the vertical direction refers to the arrangement state of the upper die driving assembly and the pressing unit relative to when the upper die driving assembly and the pressing unit are working.

[0041] According to the technical solution of the present invention, the upper mold drive assembly adopts a first servo motor as a power source and is matched with a lifter. Under the transmission of the driving gear in the reducer and the rack on the lifting rod, the lifting function of the upper mold drive assembly is realized, and the upper mold connected to the movable mold plate can be further lifted and lowered to realize the pressing operation. The upper mold descends and cooperates with the lower mold to form a pressing tooling for performing the pressing operation; further, the soft material and the skeleton in the pressing tooling can be laminated. Among them, due to the drive of the first servo motor, the lifting position of the movable mold plate and the upper mold connected thereto can be precisely controlled. The pressing depth and pressing speed of the upper mold drive assembly can be adjusted in time and at any time according to the specific working conditions. The pressing operation can be effectively controlled.

[0042] The upper die drive assembly is equipped with an upper die clamping mechanism. The lock module cooperates with the upper die clamping mechanism to achieve detachable connection between the movable die plate and the upper die. Furthermore, different types of upper dies / presses can be replaced for pressing operations to better meet production needs, making the upper die drive assembly more adaptable.

[0043] The upper mold drive assembly, pressing unit and pressing method of the present invention are usually used in the automobile manufacturing industry, and can also be used in the furniture processing industry and the packaging industry; all of which can achieve good use effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a structural schematic diagram of an upper die drive assembly in one embodiment;

[0045] Figure 2 This is a schematic diagram of the structure of the second safety mechanism (safety lock mechanism) in an embodiment (i.e. Figure 1 A partial enlarged schematic diagram of the middle A area);

[0046] Figure 3 This is a structural diagram of the upper mold clamping mechanism in an embodiment (some parts are hidden);

[0047] Figure 4 yes Figure 3 Schematic diagram of the structure of the middle and upper mold clamping mechanism from another perspective (some parts are hidden);

[0048] Figure 5 is a structural schematic diagram of a pressing unit in an embodiment;

[0049] Figure 6Fig. 1 is a schematic view of a press tool according to an embodiment of the present application;

[0050] Reference signs:

[0051] 26 - guide pillar; 27 - mounting base; 28 - linear bearing; 29 - movable die plate; 30 - fixed die plate; 31 - upper die locking mechanism; 32 - safety locking mechanism; 33 - lifter; 34 - lifting rod; 35 - speed reducer; 36 - first servo motor; 37 - transmission shaft; 44 - lower die plate; 45 - upper die plate; 46 - die locking block; 49 - lower die; 50 - upper die; 51 - safety locking block; 52 - second safety cylinder; 53 - locking block; 54 - die locking cylinder; 55 - mounting plate; 56 - first safety cylinder; 57 - guide block; 58 - die locking plug; 59 - upper die fixed locking block base plate. DETAILED DESCRIPTION

[0052] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0053] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should fall within the scope of protection of the present application.

[0054] It should be noted that the terms "first", "second", and the like in the present application are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0055] It should be understood that when an element (such as a layer, film, region, or substrate) is described as "on" another element, it can be directly on the other element, or there can be an intermediate element. Moreover, in the present application, when an element is described as "connected" to another element, it can be "directly connected" to the other element, or "connected" to the other element through a third element.

[0056] Embodiment one

[0057] Please refer to Figures 1-5 , the embodiment provides a upper die driving assembly, comprising: a fixed die plate 30, a movable die plate 29 and a lifter 33. The fixed die plate 30 can be understood as fixedly arranged. The movable die plate 29 is arranged below the fixed die plate 30 and opposite to the fixed die plate 30; generally, the movable die plate 29 is parallel to the plate surface of the fixed die plate 30. The lifter 33 is fixed on the fixed die plate 30, and the action end of the lifter 33 is connected to the movable die plate 29, for driving the movable die plate 29 to vertically ascend and descend. Wherein, the lifter 33 is driven by a first servo motor 36. The first servo motor 36 provides power, when the upper die driving assembly drives the upper die 50 to ascend and descend, the position of the ascending and descending can be precisely controlled; and it is convenient to adjust the pressing depth and pressing speed of the upper die driving assembly driving the upper die 50 and the lower die 49 to cooperate, and it can be adjusted at any time. Wherein, the vertical direction is relative to the arrangement state of the upper die driving assembly and the pressing unit (the structure of the pressing unit is described in embodiment two) when the upper die driving assembly and the pressing unit work, refer to the arrow in Figure 1 、 Figure 5 , the same reason for each embodiment.

[0058] Regarding the lifter 33, there can be many forms. In one embodiment, referring to Figure 1 , the lifter 33 comprises a gear and rack mechanism; by driving the rotation of the gear, the rack can be driven to ascend and descend, and further by the rack driving the upper die 50 connected to the movable die plate 29 to realize the ascending and descending. Specifically, the lifter 33 comprises: the above-mentioned first servo motor 36, a speed reducer 35 and a lifting rod 34. The speed reducer 35 is in transmission connection with the first servo motor 36; the lifting rod 34 is vertically arranged, and the first end of the lifting rod 34 is fixedly connected with the movable die plate 29. Wherein, the lifting rod 34 is fixed with a mounting seat 27 at the position corresponding to the movable die plate 29, so that the movable die plate 29 can ascend and descend synchronously with the lifting rod 34; and the end of the lifting rod 34 is fixedly connected through the mounting seat 27. The rod body of the lifting rod 34 is formed with a rack, and the rack is formed with continuous tooth blocks; the rack of the lifting rod 34 is in transmission with the driving gear in the speed reducer 35; when the driving gear of the speed reducer 35 rotates, the lifting rod 34 can be driven to ascend and descend due to the meshing action of the driving gear and the rack on the lifting rod 34; the lifting rod 34 can drive the movable die plate 29 to ascend and descend synchronously. Due to the driving of the first servo motor 36, the position of the movable die plate 29 ascending and descending can be precisely controlled, and further the pressing depth and pressing speed of the upper die 50 and the lower die 49 can be controlled; and the pressing depth and pressing speed can be adjusted at any time by the driving of the first servo motor 36, and the adjustment effect of the pressing operation is better.

[0059] Regarding the lifter 33, in an embodiment, the lifter 33 comprises a ball screw mechanism; the ball screw is driven to rotate by the first servo motor 36, and the screw nut moves along the ball screw. When the ball screw is vertically arranged, and the screw nut is connected to the movable die plate 29, the movable die plate 29 can be driven to vertically move by the screw nut. Specifically, the lifter 33 comprises the first servo motor 36, the ball screw, and the screw nut. The ball screw is vertically arranged and fixed, and is in transmission connection with the first servo motor 36. Meanwhile, the screw nut is sleeved on the ball screw and is in transmission connection with the ball screw. Further, the screw nut is fixedly connected to the movable die plate 29. When the ball screw is driven by the first servo motor 36, the ball screw drives the screw nut to move along the length direction of the ball screw, and drives the movable die plate 29 to move. It can be understood that, due to the driving of the first servo motor 36, the position of the movable die plate 29 can be precisely controlled, and the pressing depth and pressing speed of the upper die 50 and the lower die 49 can be further controlled. The pressing depth and pressing speed can be adjusted at any time by the driving of the first servo motor 36, and the adjustment effect of the pressing operation is good.

[0060] Regarding the lifter 33, the lifter 33 comprises an electric cylinder mechanism. The electric cylinder is driven by the first servo motor 36, and the push rod of the electric cylinder is connected to the movable die plate 29. The first servo motor 36 drives the electric cylinder to work, and the push rod drives the movable die plate 29 to move. When the electric cylinder and the push rod are vertically arranged, the movable die plate 29 can be driven to vertically move. The electric cylinder mechanism is a precise control mechanism, which can precisely control the position of the movable die plate 29, and can further control the pressing depth and pressing speed of the upper die 50 and the lower die 49. The pressing depth and pressing speed can be adjusted at any time by the driving of the first servo motor 36, and the adjustment effect of the pressing operation is good.

[0061] Regarding the lifter 33, the lifter 33 can also be provided as a pneumatic cylinder mechanism. The pneumatic cylinder mechanism comprises a pneumatic cylinder, a guide rail, and a sliding block. The pneumatic cylinder is vertically arranged, and the push rod thereof is connected to the movable die plate 29; the push rod drives the movable die plate 29 to move. The guide rail and the sliding block are used for vertical guidance of the push rod driving the movable die plate 29 to move.

[0062] Since the lifter 33 needs to drive the movable die plate 29 to vertically move, the movable die plate 29 is generally rectangular. In order to realize the stable movement of the movable die plate 29, it is necessary to arrange the guide rail and the sliding block. Figure 1The lifter 33 comprises a first lifter and a second lifter. The first lifter is arranged at the first end of the fixed mold plate 30, and the second lifter is arranged at the second end of the fixed mold plate 30. The first lifter and the second lifter are identical in structure and work synchronously with each other, that is, the movable mold plate 29 can be lifted synchronously. Of course, whether the first lifter and the second lifter are a rack and pinion mechanism, a ball screw mechanism, or an electric cylinder mechanism, the first lifter and the second lifter can work simultaneously and synchronously to drive the movable mold plate 29 to lift stably.

[0063] In order to further realize the stable lifting of the movable mold plate 29, a guide mechanism can be designed to cooperate with the movable mold plate 29 to guide the lifting of the movable mold plate 29. Specifically, in one embodiment, referring to Figure 1 The guide mechanism comprises guide columns 26. The guide columns 26 are arranged vertically and in pairs. The first ends of the guide columns 26 are fixedly connected to the lower surface of the fixed mold plate 30. The guide columns 26 pass through the movable mold plate 29, and the second ends of the guide columns 26 are connected with guide column adjusting modules through mounting seats 27. The guide column adjusting modules can be used to adjust the installation height and level of the guide columns 26, and can adjust the installation of the fixed mold plate 30. Further, the guide columns 26 are externally provided with linear bearings 28, which are fixed on the movable mold plate 29 to guide the linear lifting movement of the movable mold plate 29.

[0064] Regarding the guide columns 26, preferably, the guide columns 26 are fixedly connected below the four corners of the fixed mold plate 30, and one guide column 26 is arranged at each corner. Of course, a set of linear bearings 28 is fixed at each of the four corners of the movable mold plate 29, and each linear bearing 28 is mounted on the corresponding guide column 26. At this time, under the guidance of the four guide columns 26 and the linear bearings 28 thereon, the lifting of the movable mold plate 29 is smoother and more stable, the pressing depth and speed of the upper mold 50 and the lower mold 49 are more stable and accurate, and the pressing control effect is better. In addition, the four guide columns 26 can be distributed at the middle positions of the four edges of the fixed mold plate 30. Further, the four guide columns 26 can be reduced to two. In one embodiment, the two guide columns 26 can be arranged at the middle positions of the opposite edges of the fixed mold plate 30. In another embodiment, the two guide columns 26 can be arranged symmetrically about the center of the fixed mold plate 30. In summary, the guide columns 26 can be arranged in various forms, and the arrangement of the paired guide columns 26 can basically realize the function of smoothly guiding the lifting of the movable mold plate 29.

[0065] The guide pillars 26 are fixed below the fixed die plate 30. When there are four guide pillars 26, and the four guide pillars 26 are fixed in the same way, the entire upper die driving assembly is actually supported by the four guide pillars 26. The bottom of the guide pillar 26 is fixed to the guide pillar adjusting module through the mounting seat 7, and the guide pillar adjusting module can be fixed to the rack. The upper end of the guide pillar 26 is also installed to the bottom of the fixed die plate 30 using the mounting seat 7.

[0066] Next, the technical solution of the lifter 33 is described. In one embodiment, the power transmission form of the lifter 33 can be optimized. Referring to Figure 1 、 Figure 5 , the first lifter and the second lifter share the same first servo motor 36, the first servo motor 36 outputs the same power to the first speed reducer and the second speed reducer through the transmission mechanism, realizes the synchronous operation of the first speed reducer and the second speed reducer, or the first servo motor 36 outputs the same power to the first ball screw and the second ball screw through the transmission mechanism, realizes the synchronous operation of the first ball screw and the second ball screw, or the first servo motor 36 outputs the same power to the first electric cylinder and the second electric cylinder through the transmission mechanism, realizes the synchronous operation of the first electric cylinder and the second electric cylinder, and further synchronously lifts the movable die plate 29. The power transmission form of the first servo motor 36 outputting power to the first speed reducer and the second speed reducer is described below by taking the gear and rack mechanism as an example. The central position of the fixed die plate 30 is fixed with a speed reducer 35 through a speed reducer mounting plate, and the power input end of the speed reducer 35 is installed with a first servo motor 36. The two sides of the speed reducer 35 on the fixed die plate 30 are respectively installed with a lifter 33 (i.e. a first lifter and a second lifter), and the first lifter and the second lifter are connected by a transmission shaft 37 passing through the speed reducer 35 and two couplings. Among them, the essence of the lifter 33 is a set of gear and rack mechanism, and the purpose is to convert rotary motion into linear motion. The lifting rod 34 in the lifter 33 performs lifting motion with the rotation of the speed reducer 35. Optionally, the linear bearing 28 is assembled between the mounting seats 27 at both ends of the guide pillar 26, which can perform linear motion on the guide pillar 26 to guide the lifting of the movable die plate 29. In general, in the gear and rack mechanism, the same first servo motor 36 is transmissionally connected with the first speed reducer matched with the first lifter and the second speed reducer matched with the second lifter through the transmission shaft 37, so as to output power at the same time.

[0067] In one embodiment, referring to Figure 3 、 Figure 4The upper die locking mechanism 31 is fixed on the movable die plate 29 and is used to lock the upper die 50. The upper die locking mechanism 31 is arranged in pairs, and each upper die locking mechanism 31 comprises a locking cylinder 54 and a locking block 58. The locking cylinder 54 is fixedly connected to the surface of the movable die plate 29. The locking block 58 is arranged on the surface of the movable die plate 29 and is driven by the locking cylinder 54 to reciprocate along a moving path. Preferably, the moving path is consistent with the length direction of the movable die plate 29. The first end of the locking block 58 is connected to the piston rod of the locking cylinder 54 and is used to lock or unlock the locking block 46 during movement. The locking block 46 is arranged on the moving path of the locking block 58. When the locking block 58 moves towards the locking block 46, the locking block 58 is inserted into the locking hole of the locking block 46 to lock the locking block 46. When the locking block 58 moves away from the locking block 46, the locking block 58 is withdrawn from the locking hole of the locking block 46 to unlock the locking block 46. The locking block 46 is fixed to the upper die plate 45 of the upper die 50. By locking the locking block 46 through the locking block 58, the upper die 50 can be locked. Further, the upper die driving assembly can replace different models of upper dies 50 / presses through the upper die locking mechanism 31 to meet the production needs.

[0068] In an embodiment, referring to Figure 3 , Figure 4 The locking block 58 is arranged on the upper die fixed locking block base plate 59, and the guide block 57 for guiding the movement of the locking block 58 is fixed on the upper die fixed locking block base plate 59. The guide block 57 is fixed on both sides of the locking block 58 and is arranged along the moving path of the locking block 58. The sliding channel is formed between the two guide blocks 57, and the sliding channel is in sliding cooperation with the locking block 58. The sliding channel is the moving path as mentioned above.

[0069] In an embodiment, referring to Figure 3 , Figure 4 The first safety mechanism is arranged in the upper die locking mechanism 31 and is used to maintain the locking block in the state of locking the locking block 46. The safety event caused by the locking block unlocking the locking block 46 / upper die 50 due to failure or accident is avoided. Specifically, the first safety cylinder 56 is fixed on the locking block 58, the first safety cylinder 56 is vertically arranged, and the first safety pin is connected to the piston rod of the first safety cylinder 56. The first insertion hole is formed on the upper die fixed locking block base plate 59, and the first safety pin is inserted into the first insertion hole to maintain the locking block 58 in the state of locking the locking block 46. After the first safety pin of the first safety cylinder 56 is inserted into the first insertion hole, the locking block 58 cannot exit the locking block 46, that is, the locking block 46 cannot be unlocked. The state of the locking block 58 locking the locking block 46 is always maintained, and the situation that the upper die 50 falls due to the unlocking of the locking block 46 by the locking block 58 is avoided.

[0070] Regarding the safety design for avoiding the falling of the upper die 50, in an embodiment, referring to Figure 2The fixed template 30 and the movable template 29 are provided with a second safety mechanism in cooperation, and the second safety mechanism is further configured as a safety lock mechanism 32. The safety lock mechanism 32 is used to lock the movable template 29 and fix it to the fixed template 30 to prevent the movable template 29 from falling. It can be seen that the safety lock mechanism 32 can further enhance the safety of locking the movable template 29 and prevent the movable template 29 from falling. Regarding the safety lock mechanism 32, in one embodiment, a safety lock block 51 extending toward the movable template 29 is fixedly connected to the fixed template 30, and a safety lock module is fixedly connected to the movable template 29. The safety lock module cooperates with the safety lock block to lock the safety lock block 51 on the safety lock module, thereby achieving the purpose of locking the movable template 29 and preventing the movable template 29 from falling. Regarding the safety lock mechanism 32, in another embodiment, a safety lock block 51 is fixed at the middle position of the bottom of the fixed template 30, and a safety lock module is installed at a position on the movable template 29 corresponding to the safety lock block 51. The safety lock module contains a set of second safety cylinder 52, second safety latch and locking block 53; the second safety cylinder 52 is fixed by the mounting block, and the second safety latch is connected to the second safety cylinder 52. Among them, the safety lock block 51 and the lock block 53 are both provided with a second socket; and the lock block 53 is opposite to the mounting block. When the safety lock block 51 is inserted between the lock block 53 and the mounting block, the safety lock mechanism 32 can be locked. The specific locking situation is that the second safety cylinder 52 drives the second safety latch to be inserted into the second socket of the safety lock block 51 and the lock block 53 at the same time to lock the safety lock block 51 on the lock block 53, and the movable template 29 can be locked on the fixed template 30 (that is, the movable template 29 is always fixedly connected to the fixed template 30). The locking purpose of the safety lock mechanism 32 is to prevent the movable template 29 from falling suddenly. In the two technical solutions of the above-mentioned safety lock mechanism 32, the safety lock block 51 and the safety lock module are interchanged, that is, the safety lock block 51 is set on the movable template 29 and the safety lock module is set on the movable template 29, which can also achieve the effect of ensuring the safety of the movable template 29.

[0071] The above-mentioned first safety mechanism and the second safety mechanism cooperate to form a double safety design, which greatly improves the safety of preventing the movable template 29 from falling and eliminates the risk of the movable template 29 falling.

[0072] In one embodiment, the locking module 46 is configured as an I-shaped locking block, and the locking die plug is inserted into the locking holes on both sides of the I-shaped locking block to lock the I-shaped locking block. At this time, the side surfaces of the locking holes on both sides of the I-shaped locking block are formed into a through form. Correspondingly, there are plugs on both sides of the locking die plug, and the plugs can be inserted into the locking holes at the same time. In order to facilitate the smooth insertion of the locking die plug 58 into the locking hole; preferably, the contact surface between the plug and the locking hole is configured as an inclined surface (refer to Figure 4 ); wherein the larger end face of the lock hole faces the plug of the locking mold plug block, which is convenient for guiding the plug to be inserted. According to the structure of the I-shaped lock block, it can be understood that the lock module 46 can be set to a U-shaped structure.

[0073] In one embodiment, the upper die locking mechanism 31 is arranged on the upper surface of the movable die plate 29, and the movable die plate 29 is provided with a relief hole for the locking block 46 to pass through. At this time, when the upper die locking mechanism 31 is locked by the locking block 46, there is almost no space between the movable die plate 29 and the upper die 50 / upper die plate 45. Of course, the upper die locking mechanism 31 can also be arranged on the lower surface of the movable die plate 29. When the upper die locking mechanism 31 is locked by the locking block 46, there is a space between the movable die plate 29 and the upper die 50 / upper die plate 45, which is used to accommodate the upper die locking mechanism 31 and provide installation space for the upper die locking mechanism 31.

[0074] Regarding the locking of the upper die 50, another embodiment is described. The movable die plate 29 is provided with a set of upper die locking mechanisms 31 on both sides of the safety lock mechanism 32. The upper die locking mechanism 31 mainly comprises an upper die fixed locking block base plate 59, a locking cylinder 54, a mounting plate 55, a first safety cylinder 56, a first safety bolt, a locking block 58, a guide block 57, an I-shaped locking block (i.e. the locking block 46), and an I-shaped locking block detection switch. The locking cylinder 54 is fixed to the upper die fixed locking block base plate 59 through the mounting plate 55, the piston rod of the locking cylinder 54 is connected to the locking block 58, and the guide blocks 57 are arranged on both sides of the locking block 58. The locking block 58 moves linearly within a limited range under the driving of the locking cylinder 54 and the guidance of the guide blocks 57. The upper surface of the locking block 58 is provided with the first safety cylinder 56, and the piston rod of the first safety cylinder 56 drives the first safety bolt to move up and down. When locking is needed, the I-shaped locking block enters the locking position (the locking position is located on the linear movement path of the locking block 58), and the locking block 58 is inserted into both sides of the I-shaped locking block to fix the I-shaped locking block; after the locking block 58 is in place, the first safety cylinder 56 drives the first safety bolt to tightly insert the locking block 58 on the upper die fixed locking block base plate 59, i.e. the locking of the upper die 50 is completed. The I-shaped locking block detection switch is used to detect whether the I-shaped locking block is in the locking position.

[0075] The upper die driving assembly of the present application integrates the first servo motor 36, the lifter 33, the linear bearing 28, and the guide column 26 to realize the lifting function of the upper die driving assembly and the upper die 50 connected thereto, and can precisely control the lifting position. Meanwhile, the upper die driving assembly integrates the upper die locking mechanism 31 for detachably connecting the upper die 50 through the locking block 46, and can further replace different models of the upper die 50 to meet the production needs.

[0076] Embodiment two

[0077] Please refer to Figures 1-6The embodiment provides a pressing unit, which comprises the upper die driving assembly, the upper die 50 and the lower die 49 in the first embodiment. The upper die 50 is detachably connected below the movable die plate 29. The upper die 50 and the lower die 49 cooperate to form a pressing tool. The upper die driving assembly drives the upper die 50 to descend and cooperate with the lower die 49 to perform the pressing operation, so as to press at least two materials. Generally, soft materials and skeletons can be pressed, so that the soft materials are laminated on the skeletons.

[0078] In one embodiment, the upper die 50 has an upper die plate 45, and the lower die 49 has a lower die plate 44. The top surface of the upper die plate 45 is provided with the locking block 46 in the first embodiment. When the locking block 46 is inserted into the avoiding hole on one side of the upper die locking mechanism 31, the locking block 46 can be locked by the upper die locking mechanism 31, and the locking / locking of the upper die 50 is completed. The cooperation between the upper die locking mechanism 31 and the locking block 46 realizes the detachable connection of the upper die 50, and different types of upper dies 50 can be further replaced to meet the production needs.

[0079] Embodiment three

[0080] The embodiment provides a pressing method. The pressing unit in the second embodiment (refer to Figure 5 ) can be used to laminate at least two materials in the pressing tool. Of course, it can be understood that the pressing unit uses the upper die driving assembly in the first embodiment (refer to Figures 1-4 ).

[0081] In one embodiment, the pressing method comprises the following steps (taking the laminating of soft materials on skeletons as an example):

[0082] S1. The lifter 33 drives the movable die plate 29 and the upper die 50 to descend through the cooperation between the driving gear and the rack. The upper die 50 is fixed below the movable die plate 29. The lifter 33 is driven by the first servo motor 36, and the first servo motor 36 controls the descending position and the descending speed of the upper die 50 during the descending of the upper die 50. Specifically, the lifter 33 is powered by the first servo motor 36. The driving gear in the speed reducer 35 cooperates with the rack on the lifting rod 34 to drive the lifting rod 34 to descend. At the same time, the lifting rod 34 drives the movable die plate 29 and the upper die 50 connected below the movable die plate 29 to descend synchronously.

[0083] S2. The upper die 50 descends to the final pressing position, and the upper die 50 cooperates with the lower die 49 to form a pressing tool. Before the upper die 50 cooperates with the lower die 49, the posture of the upper die 50 and / or the lower die 49 can be adjusted to align the two to facilitate smooth cooperation. In addition, a guide mechanism can be designed for the guidance of the cooperation between the upper die 50 and the lower die 49.

[0084] S3. In the pressing tool, the soft material as the first material is laminated on the second material as the framework under the pressure of the pressing unit. In the lamination, the pressing unit needs to keep the pressure applied downward by the lifter 33 for a certain period of time (i.e. pressure holding) to facilitate the complete lamination of the soft material and ensure the lamination effect.

[0085] S4. After the pressing unit completes the lamination of the soft material and the framework, the lifter 33 drives the movable die plate 29 and the upper die 50 to rise, and then the mold is disassembled.

[0086] In one embodiment, the pressing method includes the following steps (taking the glue pressing as an example):

[0087] S1. Manually place the product panel to be pressed in the lower die on the product that has completed the glue pressing.

[0088] Among them, the glue pressing of the product is completed in advance, which can be realized by a robot. The lower die 49 contains a sensor for detecting whether the product panel is assembled. After the manual assembly of the product panel is completed, the pressing start button is pressed, and the PLC starts to detect whether the product panel is assembled on the product that has completed the glue pressing after recognizing that the pressing start button is pressed. Only when the product panel is assembled on the product that has completed the glue pressing in the lower die 49 and the pressing start button is pressed, the pressing unit will start the pressing program.

[0089] S2. The pressing program starts, and the safety lock mechanism 32 is unlocked (i.e. the second safety latch is retracted from the second insertion hole of the lock block 53), and the lowering program can be started after recognizing that the second safety cylinder 52 (or the second safety latch) is retracted to the position, at which time the upper die 50 moves downward together with the movable die plate 29. Among them, the position of the upper die 50 descending is driven and controlled by the first servo motor 36.

[0090] In the lowering program, the lowering process can be divided into two stages:

[0091] (1) The first stage: the upper die 50 is lowered to 10-15 mm away from the product; in this stage, the first servo motor 36 runs at a relatively fast speed, which can be understood as that the movable die plate 29 drives the upper die 50 to descend at a relatively fast speed;

[0092] (2) The second stage: the upper die 50 is lowered from the position 10-15 mm away from the product to the final pressing position; in this stage, the first servo motor 36 runs at a relatively slow speed, which can be understood as that the movable die plate 29 drives the upper die 50 to descend at a relatively slow speed;

[0093] Among them, when switching from the first stage to the second stage, the descending position of the movable die plate 29 and the upper die 50 is controlled by the first servo motor 36.

[0094] Preferably, in the second stage of operation, the upper die 50 and the lower die 49 can be inserted into each other through the guide post and the guide sleeve to provide accurate guidance (see Figure 5 ).

[0095] S3. After the upper die 50 is lowered into position, the pressing unit performs a pressure maintaining procedure, and the pressure maintaining time is set or adjusted according to the actual production process.

[0096] S4. After the pressure maintaining procedure is completed, the lifter 33 drives the movable die plate 29 to lift the upper die 50 together; when the upper die 50 is lifted into position, the safety lock mechanism 32 locks the movable die plate 29 and the fixed die plate 30 (i.e., the second safety bolt is inserted into the second insertion hole of the lock block 53). Then, the product pre-pressing mechanism in the lower die 49 of the pressing tooling is released, and the completed product is manually removed.

[0097] At this point, the product gluing and pressing process is completed.

[0098] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An upper die drive assembly, characterized by, The mould includes: The fixed die plate; The movable die plate is arranged below the fixed die plate and opposite to the fixed die plate; and The lifter is arranged on the fixed die plate; The moving end of the lifter is connected to the movable die plate for driving the movable die plate to vertically ascend and descend; The lifter includes: The first servo motor; The speed reducer is in transmission connection with the first servo motor; and The lifting rod is vertically arranged; the first end of the lifting rod is fixedly connected to the movable die plate; The rod body of the lifting rod is formed with a rack; the rack of the lifting rod is in meshing transmission with the driving gear in the speed reducer; the driving gear of the speed reducer drives the lifting rod to ascend and descend and simultaneously drives the movable die plate to ascend and descend. The lifter includes:

2. The upper die drive assembly of claim 1, wherein, The first lifter; and The second lifter; In the upper die driving assembly, the first lifter is arranged at the first end of the fixed die plate, and the second lifter is arranged at the second end of the fixed die plate; the first lifter and the second lifter are identical in structure and are cooperated with each other to synchronously ascend and descend the movable die plate; and / or In the upper die driving assembly, the first lifter is arranged at the first end of the fixed die plate, and the second lifter is arranged at the second end of the fixed die plate; the first lifter and the second lifter share the same first servo motor; the first servo motor is in transmission connection with the speed reducer matched with the first lifter, the speed reducer matched with the second lifter through a transmission shaft; the first lifter and the second lifter are cooperated with each other to synchronously ascend and descend the movable die plate. The movable die plate is fixed with an upper die locking mechanism for locking the upper die; the upper die locking mechanism is arranged in pairs, and each upper die locking mechanism includes:

3. The upper die driving assembly of claim 1, wherein The locking cylinder is fixedly connected to the plate surface of the movable die plate; and The locking plug is arranged on the plate surface of the movable die plate; the first end of the locking plug is connected with the piston rod of the locking cylinder for moving to lock or unlock the locking block; When the locking block moves to the moving path of the locking plug, the locking plug moves towards the locking block and is inserted into the lock hole of the locking block to lock the locking block, or the locking plug moves away from the locking block and is withdrawn from the lock hole of the locking block to unlock the locking block. The locking plug is arranged on the upper die fixed locking block base plate, the upper die fixed locking block base plate is fixed with a guide block for guiding the movement of the locking plug; the guide block is fixed on both sides of the locking plug and is arranged along the moving path of the locking plug.

4. The upper die drive assembly of claim 3, wherein, The locking plug is fixed with a safety cylinder, the safety cylinder is vertically arranged, and the piston rod of the safety cylinder is connected with a first safety plug; the upper die fixed locking block base plate is provided with a first insertion hole, and the first safety plug is inserted into the first insertion hole to maintain the locking plug in the state of locking the locking block.

5. The upper die drive assembly of claim 3, wherein, The locking block is arranged in the shape of an I-shaped structure, and the locking plug is inserted into the lock hole on both sides of the I-shaped locking block to lock the I-shaped locking block.

6. The upper die drive assembly of claim 3, wherein, The fixed die plate and the movable die plate are cooperated with a safety lock mechanism; the safety lock mechanism is used for locking the movable die plate fixedly connected to the fixed die plate and preventing the movable die plate from falling.

7. The upper die driving assembly of claim 1, wherein, The upper die driving assembly further includes a guide mechanism for guiding the lifting of the movable die plate; the guide mechanism includes guide columns and / or linear bearings; 8. The upper die drive assembly of any of claims 1-7, wherein, ​ The guide posts are arranged in pairs and vertically arranged below the fixed mold plate; the first end of each guide post is fixedly connected with the fixed mold plate, and the second end penetrates through the movable mold plate and is connected with the guide post adjusting module; The linear bearing is sleeved outside the guide post; the linear bearing is fixed on the movable mold plate to guide the linear lifting movement of the movable mold plate.

9. Pressing unit, characterized in that Comprise: The upper mold driving assembly according to any one of claims 1-8; Upper mold; And Lower mold; The upper mold is detachably connected below the movable mold plate; the upper mold and the lower mold cooperate to form a compression tool.

10. A method of pressing, characterized in that The compression unit of claim 9 is used to cover the at least two materials in the compression tool; the compression method comprises the following steps: S1. The lifter drives the movable mold plate and the upper mold fixed below the movable mold plate to descend through the cooperation of the driving gear and the rack; the lifter is driven by the first servo motor, and the first servo motor controls the position and speed of the upper mold descending; S2. The upper mold descends to the final compression position and is engaged with the lower mold to form a compression tool; S3. In the compression tool, the first material is covered on the second material under the pressure of the compression unit.

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