Press machine

Abstract

According to the press machine, an upper die mechanism is driven by an air cylinder to move downwards, after the upper die mechanism descends in place, the position of the upper die mechanism is locked through a die locking mechanism, then a lower die mechanism is controlled to be jacked upwards by inflating an inflation mechanism, and at the moment, the upper die mechanism cannot move upwards due to the fact that the position of the upper die mechanism is locked through the die locking mechanism; the upper die mechanism cannot overcome upward movement of the air cylinder due to upward force generated by inflation, so that enough pressure is provided when the upper die and the lower die are closed to process products, the die closing effect is good, the price of the air cylinder is far lower than that of a hydraulic cylinder, and the production cost of the press is greatly reduced.

Description

Technical Field

[0001] The utility model relates to a press. Background Art

[0002] The press in the prior art usually includes a press frame, an upper mold mechanism arranged on the press frame and capable of being raised and lowered by a hydraulic cylinder, and a lower mold mechanism fixedly arranged on the press frame. During the mold closing process, the hydraulic cylinder drives the upper mold mechanism to descend, and sufficient pressure is used to close the mold between the upper mold and the lower mold to process the product. The hydraulic cylinder is usually expensive, which makes the production cost of the press high.

[0003] Therefore, it is necessary to design a press machine that can achieve effective mold closing and has low production cost. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a press machine.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a press machine, including a press frame, an upper mold mechanism that can be lifted up and down and is arranged on the press frame, and a lower mold mechanism that can be lifted up and down and is arranged on the press frame, the upper mold mechanism is arranged on the upper part of the press frame through an upper mold lifting cylinder, and the lower mold mechanism is arranged on the lower part of the press frame for sliding up and down through a lower mold lifting guide rail, the press machine also includes a locking mechanism that locks the position of the upper mold mechanism when the upper mold lifting cylinder lowers the upper mold mechanism to a mold closing position, the press machine also includes an inflation mechanism that is arranged at the lower part of the press frame and below the lower mold mechanism, and the inflation mechanism can lift the lower mold mechanism upward along the lower mold lifting guide rail for processing after inflation.

[0006] In certain embodiments, the upper mold mechanism includes an upper mold frame installed at the lower end of the piston of the upper mold lifting cylinder, an upper mold arranged below the upper mold frame, the locking mechanism includes a plurality of upper locking rods that are rotated around a center line and extended downward on the upper mold frame, a plurality of driving mechanisms that are respectively arranged between the upper mold frame and the corresponding upper locking rods for controlling the rotation of the upper locking rods, and also includes a lower locking rod fixed on the press frame. When the upper mold lifting cylinder lowers the upper mold mechanism to the mold closing position, the driving mechanism drives the upper locking rod to rotate, so that the upper locking rod and the lower locking rod are hooked and matched.

[0007] In some embodiments, one of the upper end of the lower locking rod and the lower end of the upper locking rod has a laterally protruding locking tooth, and the other is provided with a tube insertion cavity, and the upper opening of the tube insertion cavity has a tooth stopper, and when the upper mold lifting cylinder lowers the upper mold mechanism to the mold closing position, the locking tooth is inserted into the corresponding tube insertion cavity, and the driving mechanism drives the upper locking rod to rotate, so that the locking tooth hooks the tooth stopper, or disengages from the tooth stopper.

[0008] In some embodiments, each of the driving mechanisms includes a connecting seat fixed to the top of the locking rod, a locking drive cylinder, and a connecting rod connected to the connecting seat and the locking drive cylinder, one end of the connecting rod is fixedly connected to the connecting seat, and the other end of the connecting rod is pivotally connected to the piston end of the locking drive cylinder.

[0009] In certain embodiments, the inflation mechanism includes an inflation pipe, and a plurality of air bags that are arranged in parallel and are respectively connected to the inflation pipes, and the plurality of air bags are evenly distributed below the lower mold mechanism.

[0010] In some embodiments, the upper surface of the lower mold has a circle of lower mold positioning ring that protrudes upward, and the lower surface of the upper mold has a circle of upper adsorption grooves that are recessed upward. When the upper mold lifting cylinder lowers the upper mold mechanism to the mold closing position, the lower mold positioning ring is plugged into and matched with the upper adsorption groove.

[0011] In some embodiments, the lower mold has a lower imitation mold cavity formed in the middle of the lower mold positioning ring and recessed downward, and a lower vacuum device for evacuating the lower imitation mold cavity; the upper mold has an upper imitation mold cavity formed in the middle of the adsorption groove and recessed upward, and an upper vacuum device for evacuating the upper imitation mold cavity.

[0012] The scope of the utility model is not limited to the technical solutions formed by the specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0013] Due to the application of the above technical scheme, the utility model has the following advantages compared with the prior art: the utility model provides a press machine, in which the upper mold mechanism is driven downward by a cylinder, and when the upper mold mechanism is lowered into place, the position of the upper mold mechanism is locked by a locking mechanism, and then the inflation mechanism is inflated to control the lower mold mechanism to lift upward. At this time, the upper mold mechanism cannot move upward because the position is locked by the locking mechanism, and the upper mold mechanism will not overcome the upward movement of the cylinder due to the upward force generated by the inflation, so that the upper mold and the lower mold have sufficient pressure when the mold is closed to process the product, and the clamping effect is good, and the price of the cylinder is much lower than that of the hydraulic cylinder, which greatly reduces the production cost of the press machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 This is a three-dimensional structural diagram of plastic pallet processing equipment;

[0015] Attached Figure 2 This is the front view of the plastic pallet processing equipment;

[0016] Attached Figure 3 It is the front view of the press structure;

[0017] Attached Figure 4 is a schematic diagram of the three-dimensional structure of the second berth;

[0018] Attached Figure 5 is a front view of the second berth;

[0019] Attached Figure 6 A front view of the first berth and the second berth in the upper and lower corresponding states;

[0020] Attached Figure 7 For attachment Figure 6 A magnified schematic diagram;

[0021] Attached Figure 8 is a schematic diagram of the three-dimensional structure of the first berth;

[0022] Among them: 1. press machine; 101. upper die; 1011. upper die frame; 102. lower die; 103. press frame; 104. upper die lifting cylinder; 105. lower die lifting guide rail; 106. clamping mechanism; 1061. upper locking rod; 1062. driving mechanism; 1063. lower locking rod; 107. inflation mechanism;

[0023] 11. The first discharging device;

[0024] 12. first heating device; 121. first electromagnetic heating plate; 122. first electromagnetic heating plate bracket;

[0025] 13. First berthing platform; 131. First berthing platform positioning ring; 132. First berthing platform frame; 133. First berthing platform cylinder; 134. Lifting platform; 135. Support roller;

[0026] 14. The first transfer guide rail;

[0027] 15. a first feeding device; 151. a first suction cup group;

[0028] 21. Second discharging device;

[0029] 22. second heating device; 221. second electromagnetic heating plate; 222. second electromagnetic heating plate;

[0030] 23. Second berth; 231. Second berth frame; 232. Second berth lower cylinder; 233. Grabbing frame; 234. Lower adsorption tank; 235. Second berth upper cylinder; 236. Lifting frame; 237. Second berth positioning ring; 238. Built-in platform; 239. Built-in platform lifting cylinder; 230. Imitation protrusion;

[0031] 24. Second transfer guide rail;

[0032] 25. A second feeding device; 251. A second suction cup group. DETAILED DESCRIPTION

[0033] The following is a detailed description of the application of a press in plastic pallet processing equipment as an example.

[0034] like Figure 1 , 2 As shown, a plastic pallet processing equipment includes

[0035] A press machine 1, comprising a press frame 103, an upper die mechanism disposed on the press frame 103 and capable of being lifted up and down, and a lower die mechanism disposed on the press frame 103 and capable of being lifted up and down, wherein the upper die mechanism is disposed on the upper portion of the press frame 103 via an upper die lifting cylinder 104, and the lower die mechanism is disposed on the lower portion of the press frame 103 and is slidable up and down via a lower die lifting guide rail 105;

[0036] The first discharging mechanism includes a first discharging frame, a first discharging device 11 arranged on the first discharging frame to convey the flat lower plastic sheet, such as a first conveyor belt in this embodiment, and a first heating device 12 for heating the lower plastic sheet on the first discharging device 11, the first heating device 12 is arranged on the first discharging frame and located above the first discharging device 11;

[0037] The first docking platform 13 can move back and forth on the first transfer rail 14, so as to convey the lower plastic sheet received and outputted by the first discharging mechanism into the press 1. The length extension direction of the first transfer rail 14 is consistent with the conveying direction of the first discharging device 11, and one side of the first transfer rail 14 is located directly below the first discharging device 11, so that when the first discharging device 11, i.e., the first conveyor belt, outputs the heated lower plastic sheet above it, the first docking platform 13 moves synchronously with the first conveyor belt, so as to receive the lower plastic sheet outputted from the first conveyor belt;

[0038] The second discharging mechanism includes a second discharging frame, a second discharging device 21 arranged on the second discharging frame to convey the upper plastic sheet arranged flat, such as a second conveyor belt in this embodiment, and a second heating device 22 for heating the upper plastic sheet on the second discharging device 21, the second heating device 22 is arranged on the second discharging frame and located above the second discharging device 21;

[0039] The second docking station 23 can move back and forth on the second transfer rail 24.

[0040] The length extension direction of the second transfer guide rail 24 is consistent with the conveying direction of the second discharge device 21, and one side of the second transfer guide rail 24 is located directly below the second discharge device 21, so that when the second discharge device 21, that is, the second conveyor belt, outputs the heated upper plastic sheet above it, the second docking platform 23 moves synchronously with the second conveyor belt to receive the upper plastic sheet output from the second conveyor belt. The other side of the first transfer guide rail 14 and the second transfer guide rail 24 extend into the press 1 respectively, and the other side of the second transfer guide rail 24 One side portion is located directly above the other side portion of the first transfer guide rail 14, so that when the first docking station 13 and the second docking station 23 are respectively moved into the press 1, the first docking station 13 is located directly below the second docking station 23, so that the second docking station 23 can convey the received upper plastic sheet output by the second discharging mechanism to the upper mold mechanism of the press 1, and can also lift the lower plastic sheet on the first docking station 13. After the first docking station 13 exits the press 1 along the first transfer guide rail 14, the second docking station 23 places the lower plastic sheet in the lower mold mechanism.

[0041] The plastic pallet processing equipment also includes a control unit for controlling program execution. The control unit controls the upper mold mechanism with the upper plastic sheet and the lower mold mechanism with the lower plastic sheet in the press 1 to close the mold and apply pressure to produce the plastic pallet.

[0042] In this embodiment, after the ready-made plastic sheet is heated and softened by the first discharging mechanism and the second discharging mechanism respectively, the corresponding upper plastic sheet and the lower plastic sheet are respectively conveyed to the upper mold mechanism and the lower mold mechanism of the press 1 through the cooperation of the first docking station 13 and the second docking station 23, and the upper plastic sheet and the lower plastic sheet are pressed into one by the press 1. After cooling and demolding, a plastic pallet with strong rigidity and occupying a certain space volume that meets the buffering and shock absorption conditions is formed. The raw material is directly the processed sheet material, and the sheet material can be molded after heating. The structure is simple, the production cost is low, the plastic sheet processing cost is low, and the plastic pallet processing speed is fast.

[0043] The detailed structures of the first docking station 13 and the second docking station 23 are described as follows:

[0044] like Figure 8 As shown, the first docking platform 13 includes a first docking platform frame 132, a rising platform 134 connected to the first docking platform frame 132 through a first docking platform cylinder 133, a circle of upwardly protruding first docking platform positioning ring 131 arranged on the upper surface of the rising platform 134, and a plurality of support rollers 135 arranged in parallel in the first docking platform positioning ring 131. The plurality of support rollers 135 are fixedly or rotatably arranged on the rising platform 134, and the length direction of the plurality of support rollers 135 is perpendicular to the conveying direction of the first docking platform 13. The height of the support rollers 135 is 1-2 mm higher than the highest point of the first docking platform positioning ring 131.

[0045] The second docking platform 23 includes a second docking platform frame 231 and a material grabbing frame 233 connected to the lower part of the second docking platform frame 231 through a second docking platform lower cylinder 232. The lower surface of the material grabbing frame 233 is provided with a circle of lower adsorption grooves 234 that can be interlocked with the first docking platform positioning ring 131. A plurality of vacuum adsorption holes are distributed in the lower adsorption grooves 234. The upper part of the first docking platform positioning ring 131 is a contoured protrusion so that the material grabbing frame 233 can be lowered. When the ascending platform rises, the lower plastic sheet laid on the upper surface of the first docking platform positioning ring 131 can be pressed into the lower adsorption grooves 234 through the contoured protrusion of the first docking platform positioning ring 131, so as to be adsorbed and grabbed by the material grabbing frame 233.

[0046] like Figure 4 , 5As shown, the second docking platform 23 also includes a lifting frame 236 connected to the second docking platform frame 231 through the second docking platform cylinder 235, and the upper surface of the lifting frame 236 is provided with a circle of second docking platform positioning ring 237 protruding upward. The upper mold mechanism is arranged on the press frame 103 through the upper mold lifting cylinder 104. The upper mold mechanism includes an upper mold 101, and the lower surface of the upper mold 101 is provided with a circle of upper adsorption grooves that can be interlocked with the second docking platform positioning ring 237. A plurality of vacuum adsorption holes are distributed in the upper adsorption grooves, so that the upper plastic sheet laid on the upper surface of the second docking platform 23 can be pressed into the upper adsorption grooves through the second docking platform positioning ring 237, and the surrounding of the upper plastic sheet is adsorbed and grasped by the upper mold 101. The structure is similar to the material grabbing frame 233 and the lifting platform.

[0047] like Figure 4 As shown, the lifting frame 236 is further provided with a built-in platform 238 through a built-in platform lifting cylinder 239, and the built-in platform 238 is located in the second docking platform positioning ring 237, and the lower surface of the upper mold 101 has an upper imitation cavity that is recessed upward, so that a vacuum exhaust space is formed between the upper plastic sheets that are captured and adsorbed on all sides and correspond to the upper imitation cavity, and the upper mold 101 is provided with an upper exhaust device for exhausting the upper imitation cavity, and at least one imitation protrusion 230 is provided on the built-in platform 238, and the imitation protrusion 230 is raised so as to facilitate pressing at least part of the middle part of the upper plastic sheet into the upper imitation cavity. In this embodiment, the imitation protrusions 230 are nine upwardly protruding corner piers, so that the upper vacuum device can quickly adsorb the upper plastic sheet to the inner surface of the upper imitation cavity under the lifting and auxiliary shaping of the lower corner piers, thereby completing the adsorption and shaping of the upper mold 101. By vacuum adsorption, the upper plastic sheet is pushed into the upper imitation cavity of the upper mold, and the upper vacuum device and the built-in platform lifting cylinder synchronously adsorb and shape the upper plastic sheet upward.

[0048] The profiling protrusion 230 can be raised and lowered by the built-in platform lifting cylinder. When the second docking platform is moved to the bottom of the second discharging device 21 to receive the upper plastic sheet output by the second discharging device 21, the profiling protrusion 230 is flush with the height of the second docking platform positioning ring 237. At this time, the plastic sheet is placed horizontally on the second docking platform. When the upper plastic sheet is gripped and adsorbed on all sides, if the material of the upper plastic sheet allows, the profiling protrusion 230 is lifted to stretch and deform the upper plastic sheet. The lifting height of the profiling protrusion 230 can meet the upper profiling cavity of upper molds of various depths, and as long as the upper plastic sheet can be gripped and adsorbed on all sides, it can meet the requirements of adsorption processing and shaping. Relatively speaking, smaller plastic sheets can be used, saving the material cost of the plastic sheets.

[0049] As attached Figure 3As shown, the lower mold mechanism includes a lower mold 102, the upper surface of which is provided with a circle of lower mold positioning ring protruding upward, and a lower imitation cavity recessed downward is formed in the middle of the lower mold positioning ring, and the lower mold 102 is provided with a lower exhaust device for evacuating the lower imitation cavity, so that when the lower plastic sheet adsorbed and grasped by the grasping frame 233 is lowered onto the lower mold 102, the edge of the lower plastic sheet is pressed between the lower mold positioning ring and the lower adsorption groove 234 to form a vacuum cavity, so that the lower exhaust device can quickly adsorb the lower plastic sheet to the inner surface of the lower imitation cavity to complete the adsorption of the lower mold 102.

[0050] The detailed structures of the upper die mechanism and the lower die mechanism of the press 1 are as follows:

[0051] The upper mold mechanism is set on the press frame 103 through the upper mold lifting cylinder 104, and the lower mold mechanism is set on the press frame 103 for sliding up and down through the lower mold lifting guide rail 105. The press 1 is also provided with a locking mechanism 106 for locking the position of the upper mold mechanism after the upper mold lifting cylinder 104 sends the upper mold mechanism downward to the lower mold mechanism, and an inflation mechanism 107 is provided below the lower mold mechanism for lifting the lower mold mechanism upward after inflation.

[0052] When the upper plastic sheet and the lower plastic sheet are molded together, the position of the upper mold mechanism is locked by the mold locking mechanism 106, and the inflation mechanism 107 is inflated to control the lower mold mechanism to lift upward so that the lower plastic sheet presses the upper plastic sheet. At the same time, due to the setting of the mold locking mechanism 106, the upper mold mechanism will not move upward due to the upward force generated by the inflation, thereby ensuring that the lower plastic sheet and the upper plastic sheet are molded more tightly and the mold closing effect is good.

[0053] like Figure 3 As shown, the upper mold mechanism includes an upper mold frame 1011 installed at the lower end of the piston of the upper mold lifting cylinder 104, the locking mechanism 106 includes a plurality of upper locking rods 1061 that are rotatable around the center line and extend downward on the upper mold frame 1011, a plurality of driving mechanisms 1062 that are respectively arranged between the upper mold frame 1011 and the corresponding upper locking rods 1061 and are used to control the rotation of the upper locking rods 1061, and also includes a lower locking rod 1063 fixed on the press frame 103. When the upper mold lifting cylinder 104 lowers the upper mold mechanism to the mold closing position, the driving mechanism 1062 drives the upper locking rod 1061 to rotate, so that the upper locking rod 1061 is hooked and matched with the lower locking rod 1063.

[0054] One of the upper end of the lower locking rod 1063 and the lower end of the upper locking rod 1061 has a laterally protruding locking tooth, and the other is provided with a tube insertion cavity, and the upper mouth of the tube insertion cavity has a tooth stopper. When the upper mold lifting cylinder 104 lowers the upper mold mechanism to the mold closing position, the locking tooth is inserted into the corresponding tube insertion cavity, and the driving mechanism 1062 drives the upper locking rod 1061 to rotate, so that the locking tooth hooks the tooth stopper, or disengages from the tooth stopper.

[0055] Each driving mechanism 1062 includes a connecting seat fixed to the top of the upper locking rod 1061, a locking drive cylinder, and a connecting rod connected to the connecting seat and the locking drive cylinder. One end of the connecting rod is fixedly connected to the connecting seat, and the other end of the connecting rod is pivotally connected to the piston end of the locking drive cylinder.

[0056] The inflation mechanism 107 includes an inflation pipe, and a plurality of air bags which are arranged in parallel and are respectively connected to the inflation pipes. The plurality of air bags are evenly distributed below the lower mold mechanism.

[0057] The further detailed structures of the first discharging mechanism and the second discharging mechanism are as follows:

[0058] The first heating device 12 includes a first electromagnetic heating plate 121 located above the first conveyor belt. The first electromagnetic heating plate 121 can be lifted up and down by a lifting cylinder and is arranged on a first electromagnetic heating plate bracket 122. The first electromagnetic heating plate bracket 122 is horizontally arranged and slidably arranged on the first discharging frame perpendicular to the direction of the first conveyor belt.

[0059] The second discharging device 21 is a second conveyor belt with the same length direction located above the second transfer guide rail 24. The second heating device 22 includes a second electromagnetic heating plate 221 located above the second conveyor belt. The second electromagnetic heating plate 221 is arranged on the second electromagnetic heating plate bracket 222 and can be lifted up and down by a lifting cylinder. The second electromagnetic heating plate bracket 222 is arranged on the second discharging frame by being horizontally arranged and slidingly arranged perpendicular to the direction of the second conveyor belt. The first electromagnetic heating plate 121 and the second electromagnetic heating plate 221 are both temperature-controllable, and different heating temperatures can be set according to different plastic sheets to prevent the plastic sheets from softening excessively. In case of an accident, the first electromagnetic heating plate bracket 122 drives the first electromagnetic heating plate 121, and the second electromagnetic heating plate bracket 222 drives the second electromagnetic heating plate 221 to leave the corresponding conveyor belts respectively, which is convenient for subsequent maintenance and is easy and safe to use.

[0060] like Figure 1 , 2 As shown, the plastic pallet processing equipment also includes a first feeding device 15 and a second feeding device 25. The first feeding device 15 includes a first suction cup group 151 that can descend to grab the corresponding lower plastic sheet and then rise up to transfer it to the first discharging device 11. The second feeding device 25 includes a second suction cup group 251 that can descend to grab the corresponding lower plastic sheet and then rise up to transfer it to the second discharging device 21.

[0061] Working principle:

[0062] The first suction cup group 151 of the first feeding device 15 lifts a piece of the lower plastic sheet stacked below and places it on the first discharging device 11. The first discharging device 11 conveys the lower plastic sheet to the bottom of the first electromagnetic heating plate 121. The first electromagnetic heating plate 121 descends to heat and soften the lower plastic sheet. The first discharging device 11 outputs the heated lower plastic sheet above it. At the same time, the first docking station 13 is located below the first discharging device 11 and moves synchronously with it, so as to receive the lower plastic sheet output from the first discharging device 11. The first docking station 13 moves to the top of the lower mold in the press machine 1.

[0063] The second suction cup group 251 of the second feeding device 25 lifts one of the upper plastic sheets stacked below and places it on the second discharging device 21. The second discharging device 21 conveys the upper plastic sheet to the bottom of the second electromagnetic heating plate 221. The second electromagnetic heating plate 221 descends to heat and soften the upper plastic sheet. The second discharging device 21 outputs the heated upper plastic sheet above it. At the same time, the second docking station 23 is located below the second discharging device 21 and moves synchronously with it, so as to receive the upper plastic sheet output from the second discharging device 21. The second docking station 23 moves to the bottom of the upper mold in the press 1.

[0064] The above two steps can be performed simultaneously or successively. Figure 6 As shown, after the second docking station 23 is located above the first docking station 13, the material grabbing frame 233 of the second docking station 23 is lowered, and the ascending platform of the first docking station 13 is lifted up so that the material grabbing frame 233 absorbs and grabs the peripheral part of the lower plastic sheet on the first docking station 13, and the first docking station 13 exits the press machine 1;

[0065] The lifting frame 236 of the second docking station 23 rises, the upper mold 101 absorbs and grabs the peripheral part of the upper plastic sheet on the second docking station 23, and the built-in platform 238 lifts the upper plastic sheet into the upper imitation cavity of the upper mold so that the upper mold accelerates the absorption and shaping. The material grabbing frame 233 of the second docking station 23 is lowered, and the lower plastic sheet is placed in the lower imitation cavity of the lower mold for absorption and shaping, and the second docking station 23 exits the press machine 1;

[0066] The upper die of the press machine 1 is pressed down onto the lower die by the cylinder, the clamping mechanism 106 locks the position of the upper die 101, and the inflation mechanism 107 is inflated to lift the lower die 102, and the lower die 102 is pressed upward toward the locked upper die 101, so that the upper plastic sheet and the lower plastic sheet therebetween are effectively molded under pressure;

[0067] The integrated upper plastic sheet and lower plastic sheet are finally cooled and shaped before demoulding to form a plastic tray.

[0068] The periphery of the plastic pallet has a circle of waste edge formed by the buckling process of the adsorption groove and the positioning ring, which can be manually trimmed later.

[0069] If a more rigid plastic pallet is required, reinforcing ribs can be placed on the lower plastic sheet that is adsorbed and formed in the lower mold cavity of the lower mold.

[0070] The entire processing equipment can be accurately positioned through conventional mechanical and electrical appliances such as servos, solenoid valves, and sensors. The equipment has low manufacturing cost, low processing cost of using plastic sheets to make pallets, and is easy to use.

[0071] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A press machine, comprising a press frame (103), an upper die mechanism disposed on the press frame (103) and capable of being raised and lowered, and a lower die mechanism disposed on the press frame (103) and capable of being raised and lowered, characterized in that: The upper die mechanism is arranged on the upper part of the press frame (103) via an upper die lifting cylinder (104), and the lower die mechanism is arranged on the lower part of the press frame (103) to slide up and down via a lower die lifting guide rail (105). The press machine further comprises a mold locking mechanism (106) for locking the position of the upper mold mechanism when the upper mold lifting cylinder (104) lowers the upper mold mechanism to a mold closing position. The press machine further comprises an inflation mechanism (107) arranged at the lower part of the press machine frame (103) and located below the lower die mechanism; after being inflated, the inflation mechanism (107) can lift the lower die mechanism upward along the lower die lifting guide rail (105) for processing.

2. The press according to claim 1, characterized in that: The upper mold mechanism comprises an upper mold frame (1011) mounted on the lower end of the piston of the upper mold lifting cylinder (104), an upper mold (101) arranged below the upper mold frame (1011), the mold locking mechanism (106) comprising a plurality of upper locking rods (1061) arranged on the upper mold frame (1011) and extending downwardly so as to rotate around a center line, a plurality of driving mechanisms (1062) respectively arranged between the upper mold frame (1011) and the corresponding upper locking rods (1061) for controlling the rotation of the upper locking rods (1061), and a lower locking rod (1063) fixed on the press frame (103); when the upper mold lifting cylinder (104) lowers the upper mold mechanism to a mold closing position, the driving mechanism (1062) drives the upper locking rod (1061) to rotate, so that the upper locking rod (1061) and the lower locking rod (1063) are hooked and matched.

3. The press according to claim 2, characterized in that: One of the upper end of the lower locking rod (1063) and the lower end of the upper locking rod (1061) has a transversely protruding locking tooth, and the other is provided with an insertion cavity, and the upper opening of the insertion cavity has a tooth stopper. When the upper mold lifting cylinder (104) lowers the upper mold mechanism to the mold closing position, the locking tooth is inserted into the corresponding insertion tube cavity, and the driving mechanism (1062) drives the upper locking rod (1061) to rotate, so that the locking tooth hooks the tooth stop block or disengages from the tooth stop block.

4. The press according to claim 2, characterized in that: Each of the driving mechanisms (1062) comprises a connecting seat fixed to the top of the upper locking rod (1061), a locking drive cylinder, and a connecting rod connected to the connecting seat and the locking drive cylinder, one end of the connecting rod is fixedly connected to the connecting seat, and the other end of the connecting rod is pivotally connected to the piston end of the locking drive cylinder.

5. The press according to claim 1, characterized in that: The inflation mechanism (107) comprises an inflation pipe, and a plurality of air bags which are arranged in parallel and are respectively connected to the inflation pipes, wherein the plurality of air bags are evenly distributed below the lower mold mechanism.

6. The press according to claim 1, characterized in that: The upper surface of the lower mold (102) has a circle of lower mold positioning ring protruding upward, and the lower surface of the upper mold (101) has a circle of upper adsorption grooves recessed upward. When the upper mold lifting cylinder (104) lowers the upper mold mechanism to the mold closing position, the lower mold positioning ring is inserted and matched with the upper adsorption groove.

7. The press according to claim 6, characterized in that: The lower mold (102) comprises a lower imitation mold cavity formed in the middle of the lower mold positioning ring and recessed downward, and a lower exhaust device for exhausting air from the lower imitation mold cavity; the upper mold (101) comprises an upper imitation mold cavity formed in the middle of the adsorption groove and recessed upward, and an upper exhaust device for exhausting air from the upper imitation mold cavity.

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