A multi-layer heat press

Abstract

The present invention relates to the technical field of hot pressing equipment, and in particular to a multi-layer hot press machine, including a hot pressing drive mechanism, a base, a movable plate, a fixed seat, a plurality of pressing plates, a plurality of guide pillars, a plurality of heating plates and a plurality of gravity compensation mechanisms, wherein the plurality of guide pillars are connected between the base and the fixed seat, the movable plate is located on one side of the base, the plurality of pressing plates are located between the movable plate and the fixed seat, the hot pressing end of the hot pressing drive mechanism is used to apply thermal pressure to the movable plate, the pressing plate located on one side of the fixed seat and the fixed seat, the two adjacent pressing plates, and the pressing plate located on one side of the movable plate and the movable plate are respectively connected via a gravity compensation mechanism, and the side of the movable plate close to the pressing plate, the two sides of the pressing plate, and the side of the fixed seat close to the pressing plate are all equipped with heating plates. The present application realizes hot pressing treatment of multiple materials at one time, improves the efficiency of hot pressing, and eliminates the influence of gravity, so that the thermal pressure exerted on each material is equal, and the effect and quality of hot pressing treatment are good.

Description

Technical Field

[0001] The invention relates to the technical field of hot pressing processing equipment, in particular to a multi-layer hot pressing machine. Background Art

[0002] Some products need to be hot pressed during the production process. For example, hot pressing packaging and hot pressing formation are two important processes in battery production. Traditional battery hot pressing is to use a hot press to hot press each battery, and only one battery can be hot pressed at a time, which has low processing efficiency. In order to improve the efficiency of hot pressing, there is currently a device that can hot press multiple batteries at one time, such as patent documents with application numbers 201820664351.6, 201821083408.X, 201920417378.X, 201920417401.5, and 201720931504.4. They can all hot press multiple batteries at one time, but they all have the following defects: during the hot pressing process, they will be affected by the gravity of structures such as the heating plate and the load-bearing plate, resulting in inconsistent thermal pressure on each battery, making it difficult to ensure the quality of hot pressing for each battery. Therefore, the defects are very obvious and a solution is urgently needed. Summary of the invention

[0003] In order to solve the above technical problems, the object of the present invention is to provide a multi-layer hot press.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A multi-layer hot press machine comprises a hot pressing drive mechanism, a base, a movable plate, a fixed base, multiple pressing plates, multiple guide pillars, multiple heating plates and multiple gravity compensation mechanisms, wherein the multiple guide pillars are connected between the base and the fixed base, the movable plate is located on one side of the base, the multiple pressing plates are located between the movable plate and the fixed base, the hot pressing drive mechanism is installed on the base, the hot pressing end of the hot pressing drive mechanism is used to apply hot pressure to the movable plate, the movable plate and the multiple pressing plates are both slidably connected with the multiple guide pillars, the pressing plate located on one side of the fixed base and the fixed base, between two adjacent pressing plates, and between the pressing plate located on one side of the movable plate and the movable plate are respectively connected via a gravity compensation mechanism, and heating plates are installed on the side of the movable plate close to the pressing plate, on both sides of the pressing plate, and on the side of the fixed base close to the pressing plate.

[0006] Furthermore, the hot pressing driving mechanism includes a pressure driving module installed on the base, a slide rail installed on the side of the movable plate close to the base, a slider slidably connected to the slide rail, an extension piece connected to the slider and protruding out of the slide rail, and a translation driving module installed on the movable plate, the extension piece is connected to the translation end of the translation driving module; the pressure end of the pressure driving module is used to resist the extension piece.

[0007] Furthermore, the base is provided with an avoidance hole, and the extension piece protrudes into the avoidance hole.

[0008] Furthermore, a plurality of rollers are rotatably connected in the slide rail, and the rollers roll against the slider.

[0009] Furthermore, there is a movable gap between the slider and the movable plate.

[0010] Furthermore, each pressing plate is provided with a sensor, and the sensor is used to detect whether there is material on the heating plate.

[0011] Furthermore, two adjacent gravity compensation mechanisms are arranged in a staggered manner.

[0012] Furthermore, the gravity compensation mechanism includes at least two groups of telescopic actuators, one end of each group of telescopic actuators is mounted on a fixed seat or a pressure plate, and the other end of each group of telescopic actuators is connected to a pressure plate or a movable plate.

[0013] Furthermore, the telescopic driver comprises a cylinder and a connecting rod mounted on the piston rod of the cylinder, and the connecting rod is connected to the pressure plate or the movable plate.

[0014] Furthermore, the connecting rod is provided with a quick-release clamping head, and the pressure plate or the movable plate is provided with a quick-release clamping rail, and the quick-release clamping head is detachably clamped with the quick-release clamping rail.

[0015] The beneficial effects of the present invention: the present invention can be used upward (the base is located below the fixed seat, and the hot pressing end of the hot pressing drive mechanism is facing upward), and can also be used downward (the base is located above the fixed seat, and the hot pressing end of the hot pressing drive mechanism is facing downward). It has various uses, and users can choose the usage status according to actual needs such as occasions. This embodiment is explained by taking the use of upward as an example, and the pulling force required to be applied by multiple gravity offsetting mechanisms from top to bottom decreases successively. In actual application, at the beginning, the active ends of multiple gravity offsetting mechanisms are in an extended state, so that the fixed seat and the topmost pressure plate are in an open state, the two adjacent pressure plates are in an open state, and the movable plate and the bottommost pressure plate are in an open state. At this time, the present invention is in an open state, and the material to be hot-pressed (such as batteries, etc.) can be placed on the corresponding heating plate. Multiple gravity offsetting mechanisms cooperate to offset the total gravity borne by all pressure plates, that is, the tension applied by the gravity offsetting mechanism of the top layer to the pressure plate connected thereto is equal to the total gravity borne by the pressure plate, and the tension applied by the gravity offsetting mechanism of the bottom layer to the movable plate connected thereto is equal to the total gravity borne by the movable plate, thereby avoiding the influence of the gravity of structures such as the pressure plate, heating plate and material on the hot pressing effect and eliminating the influence of gravity. Then the active ends of multiple gravity offsetting mechanisms shrink, so that the fixed seat and the topmost pressure plate are in a closed state, and the adjacent The two pressing plates are in a closed state, and the movable plate and the bottommost pressing plate are in a closed state, so that the material is clamped between the two adjacent heating plates. At this time, the present invention is in a closed state, and then the hot pressing end of the hot pressing driving mechanism extends, and the hot pressing end of the hot pressing driving mechanism contacts the bottom surface of the movable plate, and applies an upward thrust (thermal pressure) to the movable plate. In this process, the action ends of multiple gravity offset mechanisms will work synchronously according to the hot pressing end of the hot pressing driving mechanism, so that the extension amount of the hot pressing end of the hot pressing driving mechanism is equal to the contraction amount of the action end of each gravity offset mechanism, offsetting the gravity, so that the thermal pressure applied by the hot pressing driving mechanism acts on each material, and the thermal pressure borne by each material is equal, which improves the effect and quality of the hot pressing treatment of the material; when the hot pressing treatment reaches the required time, the hot pressing driving mechanism releases the force on the movable plate, and multiple gravity offset mechanisms extend and reset to facilitate the removal of the hot pressing treated materials. The present invention realizes hot pressing treatment of multiple materials at one time, improves the hot pressing efficiency, and eliminates the influence of gravity, so that the thermal pressure borne by each material is equal, and the effect and quality of the hot pressing treatment are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in an open state with materials placed thereon.

[0017] Figure 2 It is a schematic diagram of the local structure of the present invention.

[0018] Figure 3It is a schematic diagram of the local structure from another perspective of the present invention.

[0019] Description of reference numerals:

[0020] 1. Hot pressing drive mechanism; 11. Pressure driving module; 12. Slide rail; 13. Slider; 14. Extension piece; 15. Translation driving module; 16. Roller; 17. Active gap; 18. Sensor; 19. Limit block; 2. Base; 21. Avoidance hole; 3. Movable plate; 4. Fixed seat; 5. Pressing plate; 6. Heating plate; 7. Gravity compensation mechanism; 71. Telescopic drive; 72. Cylinder; 73. Connecting rod; 74. Quick release clamp; 75. Quick release rail; 8. Material; 9. Guide column. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0022] like Figures 1 to 3 As shown, a vertical multi-layer hot press provided by the present invention comprises a hot pressing drive mechanism 1, a base 2, a movable plate 3, a fixed seat 4, a plurality of pressing plates 5, a plurality of guide pillars 9, a plurality of heating plates 6 and a plurality of gravity compensation mechanisms 7, wherein the plurality of guide pillars 9 are connected between the base 2 and the fixed seat 4, the movable plate 3 is located on one side of the base 2, and the plurality of pressing plates 5 are located between the movable plate 3 and the fixed seat 4, the hot pressing drive mechanism 1 is mounted on the base 2, and the hot pressing end of the hot pressing drive mechanism 1 is used to apply hot pressure to the movable plate 3, the movable plate 3 and the plurality of pressing plates 5 are both slidably connected with the plurality of guide pillars 9, the pressing plate 5 located on one side of the fixed seat 4 and the fixed seat 4, between two adjacent pressing plates 5, and between the pressing plate 5 located on one side of the movable plate 3 and the movable plate 3 are respectively connected via a gravity compensation mechanism 7, a heating plate 6 is installed on one side of the movable plate 3 close to the pressing plate 5, on both sides of the pressing plate 5, and on one side of the fixed seat 4 close to the pressing plate 5, the base 2, the movable plate 3, the plurality of pressing plates 5 and the fixed seat 4 are sequentially arranged along the axial direction of the guide pillar 9.

[0023] The present invention can be used in an upward direction (the base 2 is located below the fixed seat 4, and the hot pressing end of the hot pressing drive mechanism 1 is facing upward), or in a downward direction (the base 2 is located above the fixed seat 4, and the hot pressing end of the hot pressing drive mechanism 1 is facing downward). It has various uses, and the user can choose the use state according to actual needs such as occasions. This embodiment is explained by taking the upward use as an example, and the pulling force required to be applied by multiple gravity offset mechanisms 7 from top to bottom decreases successively. In actual application, at the beginning, the active ends of the multiple gravity offsetting mechanisms 7 are in an extended state, so that the fixed seat 4 and the topmost pressure plate 5 are in an open state, the two adjacent pressure plates 5 are in an open state, and the movable plate 3 and the bottommost pressure plate 5 are in an open state. At this time, the present invention is in an open state, and the material 8 to be hot-pressed (such as batteries, etc.) can be placed on the corresponding heating plate 6. The multiple gravity offsetting mechanisms 7 cooperate to offset the total gravity borne by all the pressure plates 5, that is, the tension applied by the gravity offsetting mechanism 7 of the top layer to the pressure plate 5 connected thereto is equal to the total gravity borne by the pressure plate 5, and the tension applied by the gravity offsetting mechanism 7 of the bottom layer to the movable plate 3 connected thereto is equal to the total gravity borne by the movable plate 3, thereby avoiding the gravity of the pressure plate 5, the heating plate 6, the material 8 and other structures from affecting the hot pressing effect and eliminating the influence of gravity. Then the active ends of the multiple gravity offsetting mechanisms 7 shrink, so that the fixed seat 4 and the topmost pressure plate 5 are in a closed state, and the adjacent The two pressing plates 5 are in a closed state, and the movable plate 3 and the bottommost pressing plate 5 are in a closed state, so that the material 8 is clamped between the two adjacent heating plates 6. At this time, the present invention is in a closed state, and then the hot pressing end of the hot pressing drive mechanism 1 extends, and the hot pressing end of the hot pressing drive mechanism 1 contacts the bottom surface of the movable plate 3, and applies an upward thrust (thermal pressure) to the movable plate 3. During this process, the action ends of multiple gravity offset mechanisms 7 will work synchronously according to the hot pressing end of the hot pressing drive mechanism 1, so that the extension amount of the hot pressing end of the hot pressing drive mechanism 1 is equal to the contraction amount of the action end of each gravity offset mechanism 7, which offsets the gravity, so that the thermal pressure applied by the hot pressing drive mechanism 1 acts on each material 8, and the thermal pressure borne by each material 8 is equal, thereby improving the effect and quality of hot pressing treatment of the material 8; when the hot pressing treatment reaches the required time, the hot pressing drive mechanism 1 releases the force on the movable plate 3, and the multiple gravity offset mechanisms 7 extend and reset to facilitate the removal of the material 8 after the hot pressing treatment. The present invention realizes hot pressing treatment of multiple materials 8 at one time, improves hot pressing efficiency, and eliminates the influence of gravity, so that each material 8 is subjected to equal hot pressure, and the effect and quality of hot pressing treatment are good.

[0024] In this embodiment, the hot pressing drive mechanism 1 includes a pressure driving module 11 installed on the base 2, a slide rail 12 installed on the side of the movable plate 3 close to the base 2, a slider 13 slidably connected to the slide rail 12, an extension member 14 connected to the slider 13 and protruding out of the slide rail 12, and a translation driving module 15 installed on the movable plate 3, the extension member 14 is connected to the translation end of the translation driving module 15; the pressure end of the pressure driving module 11 passes through the base 2, the translation driving module 15 is used to drive the extension member 14 to move to correspond to the pressure end of the pressure driving module 11, and the pressure end of the pressure driving module 11 is used to resist the extension member 14; specifically, the pressure driving module 11 and the translation driving module 15 can both adopt a screw module or a linear motor, etc.

[0025] In actual application, the slide rail 12, the slider 13 and the translation drive module 15 all move up synchronously with the movable plate 3. When the movable plate 3 moves up to its position, each battery is clamped between two adjacent heating plates 6, so that there is a gap between the slide rail 12 and the pressure end of the pressure drive module 11 for the extension piece 14 to move into. At this time, the translation drive module 15 drives the extension piece 14 to move into the gap, so that the bottom end of the extension piece 14 is correspondingly arranged with the pressure end of the pressure drive module 11, and then the pressure end of the pressure drive module 11 applies thermal pressure to the extension piece 14, and the thermal pressure acts on the multiple materials 8 via the extension piece 14, the slider 13, the movable plate 3 and the multiple pressure plates 5 to realize hot pressing treatment of the multiple materials 8; after the hot pressing is completed, the pressure drive module 11 is reset, and the translation drive module 15 drives the extension piece 14 to move away from the gap. At this time, the multiple gravity offset mechanisms 7 work together to drive the fixed seat 4, the multiple pressure plates 5 and the movable plate 3 to be in an open state. The extension piece 14 is added to reasonably utilize the idle stroke (gap) generated when the multiple gravity offset mechanisms 7 are contracted to offset the gravity, which can shorten the stroke of the pressure end of the pressure drive module 11 to apply thermal pressure to the movable plate 3, shorten the cycle of the hot pressing treatment, and further improve the efficiency of the hot pressing treatment. The extension piece 14 is driven to move back and forth by the translation drive module 15, which improves the flexibility of the extension piece 14. When the present invention is in an open state, the extension piece 14 can move away from the pressure end of the pressure drive module 11. When the present invention is in a closed state, the extension piece 14 can move to the pressure end of the pressure drive module 11. The structural design is reasonable and compact, which reduces the volume of the present invention. In addition, the slider 13 slides back and forth along the slide rail 12, which improves the stability of the reciprocating movement of the slider 13 and the extension piece 14, and facilitates the disassembly and maintenance of the slider 13 and the slide rail 12.

[0026] Specifically, the hot pressing drive mechanism 1 further includes a limit block 19 mounted on the movable plate 3, and the limit block 19 is located at one end of the slide rail 12. The limit block 19 is used to resist the slider 13, so that the limit block 19 limits the movement of the slider 13 to prevent the slider 13 from leaving the slide rail 12.

[0027] In this embodiment, the base 2 is provided with an escape hole 21, and the extension member 14 protrudes into the escape hole 21. When the present invention is in an open state, the extension member 14 is located on one side of the pressure driving module 11, and the extension member 14 protrudes out of the base 2 through the escape hole 21. The escape hole 21 provides an escape space for the extension member 14, so that the structure of the extension member 14 and the base 2 is compact, and the volume of the present invention is reduced.

[0028] In this embodiment, a plurality of rollers 16 are rotatably connected in the slide rail 12, and the rollers 16 roll against the slider 13; by adding the rollers 16, the friction resistance of the slider 13 is reduced, and the friction force is reduced, which not only makes the movement of the slider 13 smooth, but also prolongs the service life of the slider 13 and the slide rail 12.

[0029] In this embodiment, there is an active gap 17 between the slider 13 and the movable plate 3. By setting the active gap 17, during the reciprocating movement of the slider 13, the top surface of the slider 13 does not contact the bottom surface of the movable plate 3, further reducing the friction force borne by the slider 13, making the movement of the slider 13 smoother, extending the service life of the slider 13 and the movable plate 3, and facilitating the disassembly and maintenance of the slider 13 and the slide rail 12. When the pressure end of the pressure drive module 11 applies an upward thrust to the extension member 14, the pressure end of the pressure drive module 11 drives the extension member 14 to move upward with the slider 13 in the active gap 17 until the slider 13 contacts the bottom surface of the movable plate 3 and drives the movable plate 3 to move upward, until the hot pressing treatment of the material 8 is completed.

[0030] In this embodiment, each pressing plate 5 is equipped with a sensor 18, which is used to detect whether the heating plate 6 carries material 8. The sensor 18 performs automatic detection of the material 8, and the detection accuracy is good to ensure that there is material 8 on the corresponding heating plate 6, and avoid the phenomenon of material 8 leakage, which leads to the inability to perform hot pressing on the material 8 normally. When the sensor 18 detects the presence of material 8, the sensor 18 feeds back a signal to the gravity compensation mechanism 7 and the hot pressing drive mechanism 1, so that the gravity compensation mechanism 7 and the hot pressing drive mechanism 1 work according to the preset program, with sensitive response and high working efficiency.

[0031] In this embodiment, two adjacent gravity offset mechanisms 7 are staggered to avoid mutual interference between the two adjacent gravity offset mechanisms 7, so that the structure of the present invention is compact and the volume is reduced.

[0032] In this embodiment, the gravity offset mechanism 7 includes at least two groups of telescopic drivers 71, one end of each group of telescopic drivers 71 is installed on the fixed seat 4 or the pressure plate 5, and the other end of each group of telescopic drivers 71 is connected to the pressure plate 5 or the movable plate 3. Preferably, each gravity offset mechanism 7 includes two groups of telescopic drivers 71, and the two groups of telescopic drivers 71 are respectively located at both ends of the fixed seat 4, the pressure plate 5 or the movable plate 3. This structural design has good structural symmetry and stability, and uniform force. The two groups of telescopic drivers 71 work synchronously to offset gravity.

[0033] In this embodiment, the telescopic driver 71 includes a cylinder 72 and a connecting rod 73 installed on the piston rod of the cylinder 72, the connecting rod 73 is connected to the pressing plate 5 or the movable plate 3, and the main body of the cylinder 72 is installed on the fixed seat 4, the pressing plate 5 or the movable plate 3. The piston rod of the cylinder 72 is telescoped to drive the connecting rod 73 to rise and fall, and the rising and falling connecting rod 73 drives the pressing plate 5 or the movable plate 3 to rise and fall to offset the gravity.

[0034] In this embodiment, the connecting rod 73 is provided with a quick-release clamp 74, and the pressing plate 5 or the movable plate 3 is provided with a quick-release clamp rail 75, and the quick-release clamp 74 is detachably clamped with the quick-release clamp rail 75. The quick-release clamp 74 is laterally inserted into the quick-release clamp rail 75, and the quick-release clamp 74 is detachably clamped with the quick-release clamp rail 75 to achieve quick disassembly and assembly of the connecting rod 73 and the pressing plate 5 or the movable plate 3, which is convenient for disassembly and assembly and maintenance.

[0035] Specifically, the heating plate 6 is provided with a plurality of suction holes, which suck the material 8 tightly onto the heating plate 6, thereby preventing the material 8 from shifting or shaking during the lifting process and affecting the quality of the hot pressing treatment, thereby improving the stability of the hot pressing treatment.

[0036] Specifically, the sensor 18 may be a through-beam photoelectric sensor.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A multi-layer hot press, characterized in that: The invention comprises a hot pressing driving mechanism, a base, a movable plate, a fixed seat, a plurality of pressing plates, a plurality of guide pillars, a plurality of heating plates and a plurality of gravity compensation mechanisms, wherein the plurality of guide pillars are connected between the base and the fixed seat, the movable plate is located at one side of the base, the plurality of pressing plates are located between the movable plate and the fixed seat, the hot pressing driving mechanism is installed on the base, the hot pressing end of the hot pressing driving mechanism is used to apply thermal pressure to the movable plate, the movable plate and the plurality of pressing plates are slidably connected with the plurality of guide pillars, the pressing plate located at one side of the fixed seat and the fixed seat, between two adjacent pressing plates, and between the pressing plate located at one side of the movable plate and the movable plate are respectively connected via a gravity compensation mechanism, and a heating plate is installed on one side of the movable plate close to the pressing plate, on both sides of the pressing plate, and on one side of the fixed seat close to the pressing plate; the hot pressing driving mechanism comprises a pressure driving mechanism installed on the base A movable module, a slide rail installed on a side of a movable plate close to a base, a slider slidably connected to the slide rail, an extension piece connected to the slider and protruding out of the slide rail, and a translation drive module installed on the movable plate, wherein the extension piece is connected to the translation end of the translation drive module; the pressure end of the pressure drive module is used to abut the extension piece; there is a movable gap between the slider and the movable plate; the gravity compensation mechanism includes at least two groups of telescopic drivers, one end of each group of telescopic drivers is installed on a fixed seat or a pressure plate, and the other end of each group of telescopic drivers is connected to the pressure plate or the movable plate; the telescopic driver includes a cylinder and a connecting rod installed on the piston rod of the cylinder, and the connecting rod is connected to the pressure plate or the movable plate; the connecting rod is provided with a quick-release clamp, and a quick-release rail is installed on the pressure plate or the movable plate, and the quick-release clamp is detachably clamped to the quick-release rail.

2. A multi-layer hot press according to claim 1, characterized in that: The base is provided with an avoidance hole, and the extension piece protrudes into the avoidance hole.

3. A multi-layer hot press according to claim 1, characterized in that: A plurality of rollers are rotatably connected in the slide rail, and the rollers roll against the slider.

4. A multi-layer hot press according to claim 1, characterized in that: Each pressing plate is equipped with a sensor, which is used to detect whether there is material on the heating plate.

5. A multi-layer hot press according to claim 1, characterized in that: Two adjacent gravity offset mechanisms are arranged in an offset manner.

Images