Film advancing mechanism preheating system

Abstract

The application relates to a film arranging machine preheating system, which comprises a preheating table, a material rack, a material rack lifting device, a lifting sensing device and a preheating timing device. The material rack lifting device comprises a first supporting piece, the lifting sensing device comprises a second supporting piece and a sensor, the preheating table is provided with a first channel and a second channel along a first direction, the first supporting piece is movably arranged in the first channel and is used for driving the material rack to move along the first direction or the opposite direction of the first direction when the first supporting piece abuts against the material rack when passing through the first channel, the second supporting piece is movably arranged in the second channel and is used for following the material rack to move along the first direction or the opposite direction of the first direction when the second supporting piece abuts against the material rack when passing through the second channel, the sensor is configured to generate a trigger signal when the second supporting piece moves to a first position, and the preheating timing device is used for starting preheating timing under the triggering of the trigger signal. The film arranging machine preheating system can improve the preheating efficiency of the film arranging machine.

Description

Technical Field

[0001] This application relates to the field of film sorting machine technology, and in particular to a film sorting machine preheating system. Background Technology

[0002] The original chip setter lacked preheating timing and preheating failure recording functions. If the lead frame preheating time was too short, it would cause burrs during molding, and if the preheating time was too long, it would cause lead frame oxidation and chip defects, making the chip setter prone to damage. Utility Model Content

[0003] Therefore, it is necessary to provide a preheating system for a film sorting machine that can avoid damage during preheating, in order to address the aforementioned technical problems.

[0004] In a first aspect, this application provides a preheating system for a film sorting machine, comprising:

[0005] The preheating table has multiple preheating guide rails on one side surface along the first direction, and a first channel and a second channel along the first direction.

[0006] The material rack is located on the surface of the preheating table near the preheating guide rail and is used to support the material sheet;

[0007] The material rack lifting device is located on the side of the preheating table away from the material rack, and includes a first support member. The first support member is movably inserted through the first channel and is used to drive the material rack to move in the first direction or the opposite direction when it passes through the first channel and comes into contact with the material rack.

[0008] The lifting sensing device includes a second support member and a sensor; the second support member is movably disposed in the second channel and is used to follow the material rack in a first direction or the opposite direction when it passes through the second channel and abuts against the material rack; the sensor is configured to generate a trigger signal when the second support member moves to a first position.

[0009] A preheating timing device is used to start the preheating timing upon triggering a trigger signal.

[0010] In one embodiment, the material rack lifting device further includes:

[0011] The first telescopic component includes a first main body and a first telescopic part. The first main body has a first receiving cavity. The first telescopic part is connected to one end of the first connecting member. The first main body is fixedly connected to the preheating table. The first telescopic part moves along a first direction and passes through the first receiving cavity.

[0012] The first connector has a plane that is parallel to the second direction. The end of the first connector away from the first telescopic part is fixedly connected to the end of the first support member away from the material rack. It is used to follow the first telescopic part in the first direction when the first telescopic part moves in the first direction, so as to drive the first support member to move in the first direction.

[0013] In one embodiment, the first connector includes a first connecting portion and a second connecting portion; the first connecting portion has a first end and a second end extending along a third direction, and the second connecting portion has a third end and a fourth end extending along a third direction; a first telescopic portion is fixedly connected to the midpoint of the first connecting portion and the midpoint of the second connecting portion, respectively; the first end, the second end, the third end and the fourth end are respectively fixedly connected to the end of a first support member away from the material rack; the third direction and the second direction are parallel to each other.

[0014] In one embodiment, the first support is used to make the surface of the material rack away from the preheating table flush with the surface of the preheating guide rail when the material rack is driven to move in the first direction, and to make the surface of the material rack close to the preheating table abut against the surface of the preheating table when the material rack is driven to move in the opposite direction of the first direction.

[0015] In one embodiment, the lifting sensing device further includes:

[0016] The first trigger is sleeved on the outside of the second support. One side surface of the first trigger along the second direction is flush with the surface of the preheating table. It is used to limit the displacement of the second support along the second direction when it moves with the second support along the first direction or the opposite direction of the first direction. The first direction and the thickness direction of the preheating table are parallel to each other, and the second direction and the first direction are perpendicular to each other.

[0017] An elastic element is sleeved on the outside of the second support member, with one end abutting against one side surface of the first trigger member and the other end abutting against one side surface of the boss; the boss is located on the side surface of the preheating platform near the lifting sensing device, facing the first trigger member, and has a third channel along the first direction, through which the second support member can be movably inserted; a sensor is positioned facing the third channel and is used to detect the position of the second support member when it passes through the third channel.

[0018] In one embodiment, the preheating system for the chip setter further includes:

[0019] The material rack limiting device is located on the side of the preheating table near the material rack and is used to lock or release the material rack.

[0020] In one embodiment, the rack limiting device includes:

[0021] The second telescopic member includes a second main body and a second telescopic part. The second main body has a second receiving cavity. The second telescopic part is connected to one end of the second trigger member. The second main body is connected to the fixing member. The second telescopic part moves along the second direction and passes through the second receiving cavity.

[0022] The second trigger member has one end away from the second telescopic part abutting against one side surface of the material rack, and is used to extend in the second direction or retract in the opposite direction of the second direction under the drive of the second telescopic part; the second trigger member is used to lock the material rack when it extends and to release the material rack when it retracts.

[0023] The fastener is fixed to one side surface of the preheating table.

[0024] In one embodiment, the preheating timing device further includes:

[0025] The alarm device is configured to generate an alarm signal when the preheating time reaches a preset duration.

[0026] In one embodiment, the preheating timing device is further configured to generate a reset signal when the preheating time reaches a preset duration; the second telescopic part is configured to drive the second trigger member to retract in the opposite direction of the second direction under the triggering of the reset signal.

[0027] In one embodiment, the preheating timing device further includes:

[0028] The display screen, fixed to one side of the preheating platform, is used to display the preheating time.

[0029] The aforementioned preheating system for the sheet stacking machine, through the first support member of the material rack lifting device, drives the material rack to move in the first direction or the opposite direction when it passes through the first channel and comes into contact with the material rack. This causes the sheet carried by the material rack to move towards or away from the preheating guide rail, flexibly adjusting the position of the sheet to ensure precise alignment between the sheet and the preheating guide rail, thus ensuring uniform heating of the sheet. At the same time, through the second support member of the lifting sensing device, the material rack moves along the first direction or the opposite direction. When the sensor moves to the first position of the second support member, it generates a trigger signal to start the preheating timer, avoiding insufficient or excessive preheating and further improving the preheating efficiency of the sheet stacking machine. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a top view of the preheating system of the chip setter in one embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the left-side structure of the preheating system of the chip setter in one embodiment of this application.

[0033] Figure 3 This is a bottom view of the preheating system of the chip setter in one embodiment of this application.

[0034] Figure 4 This is a bottom view of the preheating system of the chip setter in one embodiment of this application.

[0035] Figure 5 This is a schematic diagram of the lifting sensing device from one side view in one embodiment of this application.

[0036] Figure 6 This is a schematic diagram of the material rack limiting device from one side view in one embodiment of this application.

[0037] Figure 7 This is a schematic diagram of the preheating timing device in one embodiment of this application from one side view.

[0038] Explanation of icon numbers:

[0039] 100 - Preheating platform; 110 - Preheating guide rail; 120 - Boss;

[0040] 200-material rack;

[0041] 300 - Material rack lifting device; 310 - First support member; 320 - First telescopic member; 321 - First main body; 322 - First telescopic part; 330 - First connecting member; 331 - First connecting part; 332 - Second connecting part;

[0042] 400 - Lifting sensor; 410 - Second support member; 420 - Sensor; 430 - First trigger member; 440 - Elastic member;

[0043] 500 - Preheating timing device; 510 - Alarm element; 520 - Display screen;

[0044] 600 - Material rack limiting device; 610 - Second telescopic component; 611 - Second main body; 612 - Second telescopic part; 620 - Second trigger component; 630 - Fixing component;

[0045] A1 - First channel; A2 - Second channel; A3 - Third channel. Detailed Implementation

[0046] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0047] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0048] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0052] See Figure 1 , Figure 2 and Figure 3 , Figure 1 This paper shows a top view of the preheating system for a chip stacker according to one embodiment of the present application. Figure 2 This diagram shows a left-side view of the preheating system for a chip setter according to one embodiment of the present application. Figure 3This diagram shows a bottom view of a preheating system for a sheet stacking machine according to an embodiment of this application. The preheating system for a sheet stacking machine provided in this embodiment includes: a preheating table 100, a material rack 200, a material rack lifting device 300, a lifting induction device 400, and a preheating timing device 500. The preheating table 100 has multiple preheating guide rails 110 on one side surface along a first direction, and a first channel A1 and a second channel A2 along the first direction. The material rack 200 is located on the side surface of the preheating table 100 near the preheating guide rails 110 and is used to carry the sheet material. The material rack lifting device 300 is located on the side of the preheating table 100 away from the material rack 200 and includes a first support member 310. The first support member 310 is movably inserted through the first channel A1 and is used to drive the material rack 200 when it passes through the first channel A1 and abuts against the material rack 200. 0. Moves along the first direction or the opposite direction of the first direction; the lifting sensing device 400 includes a second support member 410 and a sensor 420; the second support member 410 is movably inserted through the second channel A2 and is used to follow the material rack 200 in the first direction or the opposite direction when it passes through the second channel A2 and abuts against the material rack 200; the sensor 420 is configured to generate a trigger signal when the second support member 410 moves to the first position; the preheating timing device 500 is used to start the preheating timing when triggered by the trigger signal.

[0053] When the sheet is placed on the rack 200, the first support member 310 of the rack lifting device 300 extends from the first channel A1 of the preheating table 100 along the first direction and abuts against the bottom of the rack 200 above the preheating table 100, forming a rigid contact to ensure force transmission. The first support member 310 is driven by a power source and can move along the first direction (i.e., towards the preheating guide rail 110) or the opposite direction (i.e., away from the preheating guide rail 110). Since the first support member 310 abuts against the rack 200, the driving force is directly transmitted to the rack 200, causing the rack 200 and the sheet it carries to move synchronously. If the initial position of the sheet is far from the preheating guide rail 110: the first support member 310 pushes the rack 200 along the first direction until the sheet is in contact with the preheating guide rail 110 (i.e., reaches the preheating position required by the process). The inner wall of the first channel A1 restricts the movement direction of the first support 310, preventing the support from shifting in other directions during movement, and ensuring that the material rack 200 always moves in the direction aligned with the preheating guide rail 110, thus achieving precise alignment.

[0054] The second support member 410 of the lifting sensing device 400 also passes through the second channel A2 from below the preheating table 100 and abuts against the bottom of the material rack 200. When the material rack 200 is pushed by the first support member 310 to move along the first direction, the second support member 410 will move synchronously with the material rack 200 along the first direction; when the material rack 200 moves in the opposite direction, the second support member 410 will also move in the opposite direction. The second channel A2 is parallel to the first channel A1 and is along the same first direction, ensuring that the movement direction of the second support member 410 is completely consistent with that of the material rack 200 and the first support member 310. This avoids the second support member 410's movement trajectory differing from that of the material rack 200 due to channel direction deviation, ensuring that its position accurately reflects the actual position of the material rack 200. The sensor 420 is pre-fixed at a specific position below the preheating table 100. The first position it monitors is the optimal preheating position of the material rack 200, which is the position where the material rack 200, carrying the material sheet, is exactly in contact with the preheating guide rail 110 and meets the preheating process requirements. When the second support member 410 moves to the first position with the material rack 200, the sensor 420 will detect the signal from the second support member 410 and generate a trigger signal.

[0055] The preheating timing device 500 is connected to the sensor 420 via wires. When it receives a trigger signal from the sensor 420, its internal control circuit will start the timing program, and the touch screen will start displaying the preheating time. This ensures that the preheating time is calculated from the moment the wafer is precisely aligned with the guide rail, which fully meets the preheating process requirements of specific positions and specific times in semiconductor packaging. Ultimately, this solves the problems of no position verification and blind timing in traditional preheating equipment, improves preheating efficiency, and meets the high-precision preheating requirements of semiconductor packaging.

[0056] The preheating system for the stacking machine provided in this application drives the material rack to move in a first direction or the opposite direction when the first support of the material rack lifting device passes through the first channel and comes into contact with the material rack. This causes the material rack carrying the material sheets to move towards or away from the preheating guide rail, flexibly adjusting the position of the material sheets to ensure precise alignment between the material sheets and the preheating guide rail, thus ensuring uniform heating of the material sheets. At the same time, the second support of the lifting sensing device follows the material rack in the first direction or the opposite direction. When the sensor moves to the first position, it generates a trigger signal to start the preheating timer, avoiding insufficient or excessive preheating and further improving the preheating efficiency of the material sheets in the stacking machine.

[0057] See Figure 3The material rack lifting device 300 further includes a first telescopic member 320 and a first connecting member 330. The first telescopic member 320 includes a first main body 321 and a first telescopic portion 322. The first main body 321 has a first receiving cavity. The first telescopic portion 322 is connected to one end of the first connecting member 330. The first main body 321 is fixedly connected to the preheating table 100. The first telescopic portion 322 moves along a first direction and passes through the first receiving cavity. The plane of the first connecting member 330 is parallel to a second direction. The end of the first connecting member 330 away from the first telescopic portion 322 is fixedly connected to the end of the first support member 310 away from the material rack 200. This connection is used to follow the first telescopic portion 322 as it moves along the first direction, thereby driving the first support member 310 to move along the first direction.

[0058] The first main body 321 is fixedly connected to the preheating table 100 and serves as the static reference for the entire material rack lifting device 300. Its internal first receiving cavity provides mechanical constraints for the first telescopic part 322 to move along the first direction. The first telescopic part 322 is the power actuator, capable of moving along the first direction within the first receiving cavity. It is the power source for the entire device, responsible for outputting linear motion along the first direction. The plane of the first connecting member 330 is parallel to the second direction. Since the movement direction of the first telescopic part 322 is the first direction, but to save equipment space, the installation position of the first support member 310 may not be on the same straight line as the telescopic part. The first connecting member 330 can transmit the power of the first telescopic part 322 along the first direction to the first support member 310, while avoiding interference from other components. The first support member 310 is the component that directly abuts against the material rack 200; its movement directly drives the material rack 200 to adjust its position.

[0059] During operation, the first telescopic part 322 moves within the receiving cavity of the first main body 321 along the first direction under the action of the power source. At this time, the first main body 321 remains stationary, ensuring that the movement direction of the telescopic part is precisely along the first direction. The first connecting member 330 moves synchronously with the first telescopic part 322. Since one end of the first connecting member 330 is fixedly connected to the first telescopic part 322, the linear movement of the telescopic part directly drives the first connecting member 330 to move along the first direction as well. The plane of the first connecting member 330 is parallel to the second direction to prevent it from generating a component force perpendicular to the first direction when transmitting power, ensuring that the power is transmitted entirely along the first direction. The end of the first connecting member 330 furthest from the first telescopic part 322 is fixedly connected to the lower end of the first support member 310 (i.e., the end furthest from the material rack 200). Therefore, the movement of the first connecting member 330 drives the first support member 310 to move synchronously along the first direction. The first support member 310 passes through the first channel A1 of the preheating table 100. Eventually, the upper end of the first support member 310 will abut against the material rack 200 and push the material rack 200 to move along the first direction, or cause the material rack 200 to move in the opposite direction of the first direction under the action of gravity, thereby realizing the position adjustment of the material sheet and the preheating guide rail 110.

[0060] See Figure 4 , Figure 4 A bottom view of the preheating system for a stacking machine according to an embodiment of this application is shown. The first connecting member 330 includes a first connecting portion 331 and a second connecting portion 332. The first connecting portion 331 has a first end and a second end extending along a third direction, and the second connecting portion 332 has a third end and a fourth end extending along a third direction. A first telescopic portion 322 is fixedly connected to the midpoint of the first connecting portion 331 and the midpoint of the second connecting portion 332, respectively. The first end, second end, third end, and fourth end are each fixedly connected to the end of a first support member 310 away from the material rack 200. The third and second directions are parallel to each other.

[0061] The first direction is the core direction of the material rack 200's movement. The second and third directions are parallel to each other and perpendicular to the first direction. The first connecting part 331 and the second connecting part 332 both extend along the third direction, and the first telescopic part 322 is fixed at the midpoint of the two connecting parts. Power can be transmitted synchronously through the connecting parts to multiple points perpendicular to the first direction, while ensuring that the movement direction of each point is along the first direction. When the first telescopic part 322 moves along the first direction, for a single connecting part, the power acts at the midpoint and is transmitted to both ends (the force is completely symmetrical). The midpoints of the two connecting parts are simultaneously stressed, further ensuring that the stress state of the two connecting parts is consistent, ensuring that the driving force obtained by the four support members is uniform and synchronous. This prevents the material rack 200 from tilting, deforming, or jamming due to uneven stress.

[0062] The first and second ends of the first connecting part 311, and the third and fourth ends of the second connecting part 312, are each connected to a first support member 310. That is, support members are simultaneously installed at four different points on the material rack 200. Since the material rack 200 is the carrier for the material sheet, the four support members distributed in different areas of the material rack allow the material rack 200 to maintain overall stability during movement, avoiding warping caused by single-point support. Because all four support members are connected to the midpoint of the first telescopic part 322 through the connecting part, when the first telescopic part 322 moves along the first direction, the four support members are driven synchronously, ensuring that the material rack 200 moves in a translational manner along the first direction without deflection or twisting, achieving precise alignment between the material sheet and the preheating guide rail 110.

[0063] See Figure 3 The first support member 310 is used to ensure that when the drive rack 200 moves along the first direction, the surface of the rack 200 away from the preheating table is flush with the surface of the preheating guide rail 110, and when the drive rack 200 moves in the opposite direction of the first direction, the surface of the rack 200 near the preheating table 100 abuts against the surface of the preheating table 100. The preheating guide rail 110 is a raised structure (used to support the sheet and transfer heat) provided on the surface of the preheating table 100, so the surface height of the preheating guide rail 110 is higher than the surface height of the preheating table 100.

[0064] The material rack 200 is initially placed on the surface of the preheating table 100 near the preheating guide rail 100. At this time, the side of the material rack 200 near the preheating table 100 is in contact with the surface of the preheating table 100, while the side of the material rack 200 away from the preheating table 100 is lower than the surface height of the preheating guide rail 100. When the first support member 310 pushes the material rack 200 to move, it raises the height of the material rack 200, eventually matching the surface height of the preheating guide rail 110. After preheating is completed, the first telescopic part 322 retracts, causing the first connecting member 330 and the first support member 310 to move synchronously in the opposite direction. The material rack 200 is driven by the first support member 310 to retract and descend synchronously until the material rack 200 is once again in close contact with the surface of the preheating table 100, returning to its initial placement position.

[0065] See Figure 5 , Figure 5A perspective view of the lifting sensing device 400 according to an embodiment of this application is shown. The lifting sensing device 400 further includes a first trigger member 430 and an elastic member 440. The first trigger member 430 is sleeved on the outside of the second support member 410, and one surface of the first trigger member 430 along the second direction is flush with the surface of the preheating table 100, used to limit the displacement of the second support member 410 along the second direction when it moves with the second support member 410 along the first direction or the opposite direction of the first direction. The first direction and the thickness direction of the preheating table 100 are parallel to each other, and the second direction and the first direction are perpendicular to each other. The elastic element 440 is sleeved on the outside of the second support 410, with one end abutting against one side surface of the first trigger 430 and the other end abutting against one side surface of the boss 120. The boss 120 is located on the side surface of the preheating table 100 near the lifting sensing device 400, and is positioned opposite the first trigger 430. A third channel A3 is provided along the first direction, and the second support 410 is movably inserted through the third channel A3. The sensor 420 is positioned opposite the third channel A3 and is used to detect the position of the second support 410 when the second support 410 passes through the third channel A3.

[0066] The lifting sensor 400 is located on the preheating table 100. The boss 120 is a raised structure on the surface of the preheating table 100, and its third channel A3 runs through it along the first direction. The first trigger 430 is fitted outside the second support 410, and its side along the second direction is flush with the surface of the preheating table 100. When the second support 410 moves along the first direction, the first trigger 430 cannot move along the second direction. Because the first trigger 430 is fitted outside the second support 410, the horizontal displacement of the second support 410 is restricted by the first trigger 430, and it can only move along the first direction of the third channel A3, thus preventing the second support 410 from deviating and ensuring the accuracy of its movement trajectory. The elastic member 440 is fitted outside the second support 410, with its two ends abutting against the first trigger 430 and the boss 120, respectively. When the material rack 200 is driven to move along the first direction by the first support member 310, it will drive the second support member 410, which abuts against it, to move synchronously. At this time, the elastic member 440 will be compressed by the first trigger member 430 and the boss 120, storing elastic potential energy. When the material rack 200 moves in the opposite direction of the first direction, the elastic member 440 releases potential energy, pushing the second support member 410 to move synchronously, ensuring that the second support member 410 is always in close contact with the bottom of the material rack 200. The sensor 420 is set opposite to the third channel A3. When the second support member 410 moves with the material rack 200 to a preset position where the upper surface of the material rack 200 is flush with the preheating guide rail 110, the second support member 410 will move to the corresponding point in the third channel A3. The sensor 420 can directly and accurately detect this position, thereby generating a trigger signal to start the preheating timer.

[0067] See Figure 1and Figure 6 , Figure 6 This diagram shows a three-dimensional view of the rack limiting device in one embodiment of the present application. The preheating system for a stacking machine provided in one embodiment of the present application further includes: a rack limiting device 600, disposed on the side of the preheating table 100 near the rack 200, used to lock or release the rack 200.

[0068] The material rack limiting device 600 includes a second telescopic member 610, a second trigger member 620, and a fixing member 630. The second telescopic member 610 includes a second main body 611 and a second telescopic part 612. The second main body 611 has a second receiving cavity. The second telescopic part 612 is connected to one end of the second trigger member 620. The second main body 611 is connected to the fixing member 630. The second telescopic part 612 moves along a second direction and passes through the second receiving cavity. The end of the second trigger member 620 away from the second telescopic part 612 abuts against one side surface of the material rack 200, and is used to extend along the second direction or retract along the opposite direction under the action of the second telescopic part 612. The second trigger member 620 is used to lock the material rack 200 when extending and to release the material rack 200 when retracting. The fixing member 630 is fixed to one side surface of the preheating table 100.

[0069] The fixing member 630 is directly fixed to one side surface of the preheating table 100. Its function is to rigidly fix the second main body 611, preventing it from shifting as the second telescopic part 612 moves, and ensuring the stability of the entire device's installation position. The second main body 611 is connected to the fixing member 630, and its internal second receiving cavity is a directional constraint channel, allowing only the second telescopic part 612 to move along the second direction, ensuring that the power output direction is accurately pointed to the side surface of the material rack 200. Since the second telescopic part 612 is fixedly connected to one end of the second trigger member 620, the linear motion of the telescopic part can be transmitted to the trigger member without loss, driving the trigger member to move synchronously along the second direction.

[0070] When the preheating timing device 500 is activated, the second telescopic part 612 extends along the second direction, driving the second trigger 620 to move synchronously towards the material rack until the end of the second trigger 620 away from the telescopic part is in close contact with one side surface of the material rack 200. At this time, the trigger forms a mechanical block, blocking the movement path of the material rack 200 along the pick-up and put-down direction, ultimately locking the material rack 200 and ensuring that the material cannot be taken out during the preheating time. When the preheating timer reaches the set time, the second telescopic part 612 retracts along the second direction, driving the second trigger 620 to move synchronously away from the material rack. The contact between the second trigger 620 and the side surface of the material rack 200 is released, and there is no longer a mechanical obstruction on the movement path of the material rack 200. At this time, the operator can freely push the material rack to take out the material, realizing the release of the material rack.

[0071] See Figure 2and Figure 7 , Figure 7 The diagram shows a schematic view of the preheating timing device 500 from one side perspective according to an embodiment of this application. The preheating timing device 500 further includes an alarm element 510 and a display screen 520. The alarm element 510 is configured to generate an alarm signal when the preheating time reaches a preset duration; the display screen 520 is fixed to one side of the preheating platform 100 and is used to display the preheating time. The preheating timing device 500 is also configured to generate a reset signal when the preheating time reaches the preset duration; the second telescopic part 612 is configured to retract the second trigger element 620 in the opposite direction of the second direction upon triggering by the reset signal.

[0072] When the sensor 420 of the lifting sensing device 400 detects that the material rack 200 is in position, it sends a trigger signal to the timing device, and the device immediately starts the preheating timer. The display screen 520 receives real-time data from the timing device through the circuit and displays the current preheating time synchronously. When the preheating timer reaches the preset time, the preheating timer device 500 first outputs an alarm signal to the alarm component 510, turning the timeout into a perceptible reminder. At the same time as outputting the alarm signal, the preheating timer device 500 outputs a reset signal to the second telescopic part 612 of the material rack limiting device 600. The reset signal controls the second telescopic part 612 to retract in the opposite direction of the second direction, driving the second trigger component 620 fixedly connected to it to move synchronously. As the trigger component retracts, its contact with the material rack 200 is released, and the movement path of the material rack is no longer blocked.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A preheating system for a film sorting machine, characterized in that, include: The preheating table has multiple preheating guide rails on one side surface along the first direction, and a first channel and a second channel along the first direction. A material rack is located on the surface of the preheating table near the preheating guide rail and is used to support the material sheet; A material rack lifting device is located on the side of the preheating table away from the material rack, and includes a first support member. The first support member is movably inserted through the first channel and is used to drive the material rack to move in the first direction or the opposite direction when it passes through the first channel and abuts against the material rack. The lifting sensing device includes a second support member and a sensor; the second support member is movably disposed through the second channel and is used to follow the material rack in the first direction or the opposite direction when it passes through the second channel and abuts against the material rack; the sensor is configured to generate a trigger signal when the second support member moves to a first position; A preheating timing device is used to start the preheating timing upon triggering by the trigger signal.

2. The preheating system for the film sorting machine according to claim 1, characterized in that, The material rack lifting device also includes: The first telescopic component includes a first main body and a first telescopic part. The first main body has a first receiving cavity. The first telescopic part is connected to one end of the first connecting member. The first main body is fixedly connected to the preheating table. The first telescopic part moves along the first direction and passes through the first receiving cavity. A first connecting member is located on a plane parallel to a second direction. The end of the first connecting member away from the first telescopic part is fixedly connected to the end of the first support member away from the material rack. The first connecting member is used to follow the first telescopic part as it moves along the first direction, thereby driving the first support member to move along the first direction.

3. The preheating system for the film sorting machine according to claim 2, characterized in that, The first connector includes a first connecting portion and a second connecting portion; the first connecting portion has a first end and a second end extending along a third direction, and the second connecting portion has a third end and a fourth end extending along the third direction; the first telescopic portion is fixedly connected to the midpoint of the first connecting portion and the midpoint of the second connecting portion, respectively; the first end, the second end, the third end and the fourth end are respectively fixedly connected to the end of a first support member away from the material rack; the third direction and the second direction are parallel to each other.

4. The preheating system for the film sorting machine according to claim 1, characterized in that, The first support member is used to make the surface of the material rack away from the preheating table flush with the surface of the preheating guide rail when the material rack is driven to move along the first direction, and to make the surface of the material rack close to the preheating table abut against the surface of the preheating table when the material rack is driven to move in the opposite direction of the first direction.

5. The preheating system for the film sorting machine according to claim 1, characterized in that, The lifting sensing device also includes: A first trigger is sleeved on the outside of the second support member. One side surface of the first trigger member along the second direction is flush with the surface of the preheating table. It is used to limit the displacement of the second support member along the second direction when it moves with the second support member along the first direction or the opposite direction of the first direction. The first direction and the thickness direction of the preheating table are parallel to each other, and the second direction and the first direction are perpendicular to each other. An elastic element is sleeved on the outside of the second support member, with one end abutting against one side surface of the first trigger member and the other end abutting against one side surface of the boss; the boss is provided on the side surface of the preheating platform near the lifting sensing device, and is positioned opposite the first trigger member, and has a third channel along the first direction, through which the second support member is movably inserted; the sensor is positioned opposite the third channel and is used to detect the position of the second support member when the second support member passes through the third channel.

6. The preheating system for the film sorting machine according to claim 1, characterized in that, Also includes: A material rack limiting device is provided on the side of the preheating table near the material rack, and is used to lock or release the material rack.

7. The preheating system for the film sorting machine according to claim 6, characterized in that, The material rack limiting device includes: The second telescopic member includes a second main body and a second telescopic part. The second main body has a second receiving cavity. The second telescopic part is connected to one end of the second trigger member. The second main body is connected to the fixing member. The second telescopic part moves along a second direction and passes through the second receiving cavity. The second trigger member has one end away from the second telescopic part abutting against one side surface of the material rack, and is used to extend in the second direction or retract in the opposite direction of the second direction under the action of the second telescopic part; the second trigger member is used to lock the material rack when it extends and to release the material rack when it retracts. A fastener is fixed to one side surface of the preheating table.

8. The preheating system for the film sorting machine according to claim 1, characterized in that, The preheating timing device also includes: The alarm device is configured to generate an alarm signal when the preheating time reaches a preset duration.

9. The preheating system for the film sorting machine according to claim 7, characterized in that, The preheating timing device is also used to generate a reset signal when the preheating time reaches a preset duration; the second telescopic part is configured to drive the second trigger member to retract in the opposite direction of the second direction when triggered by the reset signal.

10. The preheating system for the film sorting machine according to claim 1, characterized in that, The preheating timing device also includes: A display screen, fixed to one side of the preheating platform, is used to display the preheating time.

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