A sliding table vacuum forming machine

Abstract

This utility model discloses a sliding-table vacuum forming machine, relating to the field of injection molding equipment technology. It includes a main hydraulic cylinder, an upper mold, a lower mold, a sliding mechanism, a vacuum hood, and a rotating mechanism. The lower mold moves horizontally through the sliding mechanism, facilitating material preparation and part removal. The upper mold is driven by a third hydraulic cylinder to rotate, facilitating operation and observation. The vacuum hood is connected to a second hydraulic cylinder, working in conjunction with the main hydraulic cylinder to achieve straight-up and straight-down mold closing and vacuum forming. During operation, slurry is injected into the lower mold, which slides into the forming position. The upper mold resets, the main hydraulic cylinder pushes the lower mold upward, the vacuum hood descends and draws a vacuum, and then the upper and lower molds close. After curing, the mold is opened and the part is removed. This utility model has a reasonable structure, safe operation, and can effectively ensure uniform product density, improve molding quality and production efficiency, making it suitable for the molding and manufacturing of foamed products such as shoe soles.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, specifically a slide-table vacuum forming machine. Background Technology

[0002] Vacuum forming machines are widely used in shoe sole manufacturing. They primarily produce shoe soles and other products by injecting foamed materials such as polyurethane (PU), CPU, rubber, and EVA into a mold and then heating and molding them. Currently, common vacuum forming machines on the market mainly employ hinged molds or four-column vertical mechanisms. Hinged molds are prone to premature extrusion of liquid material at the hinge, resulting in uneven sole density and affecting product quality. While the four-column structure avoids uneven density, it involves complex mold installation, and the formed product tends to stick to the upper mold, making removal difficult. Furthermore, the operating temperature reaches 100-200℃, posing a significant safety hazard and increasing the risk of burns to operators. Therefore, a sliding-table vacuum forming machine is urgently needed to solve these problems. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a slide-table vacuum forming machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A sliding table type vacuum forming machine includes a main hydraulic cylinder, an upper mold, and a lower mold. The main hydraulic cylinder has a fixed outer shell connected to a fixed base frame, the fixed base frame is connected to a connecting column, the connecting column is connected to a fixed top frame, and the output end of the main hydraulic cylinder is connected to a fixed plate. The fixed plate has symmetrically arranged limiting sleeves on both sides, each limiting sleeve connected to a connecting column and a sliding mechanism. The sliding mechanism is connected to a sliding plate and is used to drive the sliding plate to move linearly along the fixed plate. The upper surface of the sliding plate is detachably connected to the lower mold. The fixed top frame is rotatably connected to a rotating top plate. The lower surface of the rotating top plate... The top of the fixed column is connected to the bottom of the fixed column, the bottom of the fixed column is connected to the mold plate, the mold plate is connected to the upper mold, the lower mold is used to hold the grouting material, the grouting material is injected into the lower mold through the grouting equipment, the upper mold is located above the lower mold, the rotating top plate is connected to the fixed outer shell of the second oil cylinder, the output end of the second oil cylinder is connected to the vacuum hood, the mold plate is located inside the vacuum hood, the inside of the vacuum hood is connected to the vacuum pumping equipment, the upper surface of the rotating top plate is rotatably connected to the output end of the third oil cylinder, the fixed outer shell of the third oil cylinder is rotatably connected to the inverted U-shaped plate, and the inverted U-shaped plate is connected to the fixed top frame.

[0006] As a further embodiment of this utility model: the sliding mechanism includes: a groove plate, a toothed plate, a motor, a transmission belt, and a gear. The groove plate is provided in two sets and is symmetrically arranged on both sides of the fixed plate. The groove plate is connected to the limiting sleeve. The length of the groove plate is greater than the sum of the length of the fixed plate and the length of the sliding plate. Two sets of toothed plates are symmetrically engaged on the lower surface of the sliding plate. The toothed plates are located inside the groove plate and are slidably engaged with it. The motor's fixed housing is connected to the groove plate. The output end of the motor is connected to one end of the transmission belt. The other end of the transmission belt is connected to the gear. The gear is rotatably connected to the groove plate and meshes with the toothed plate.

[0007] As a further embodiment of this utility model: the rotating top plate is connected to the right-angle fixing plate, and the right-angle fixing plate is slidably connected to the outer wall of the vacuum chamber to ensure the longitudinal stable movement of the vacuum chamber.

[0008] As a further embodiment of this invention, the vacuum hood is provided with an observation window on its front side.

[0009] As a further embodiment of this utility model: the groove plate is connected to the connecting frame, the connecting frame is rotatably connected to the rotating frame, the rotating frame is connected to the upper mold cover, the upper mold cover is used to seal the lower mold, the connecting frame is rotatably connected to one end of the fourth oil cylinder, and the other end of the fourth oil cylinder is rotatably connected to the rotating frame.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] Uniform product density: The straight-up and straight-down mold structure avoids the problem of material being squeezed out prematurely in hinged molds, ensuring uniform density distribution and stable product quality during the sole molding process;

[0012] Safe and convenient operation: The upper mold can be flipped to a slanted state, facing the operator, which is convenient for spraying release agent, observing the grouting process and removing parts, effectively avoiding high temperature burns and improving operational safety;

[0013] High molding quality: The vacuum hood, in conjunction with the vacuum system, can effectively remove air bubbles from the material during the molding process, improving the density and uniformity of the product's internal structure;

[0014] Reasonable structure and high efficiency: The sliding table lower mold design facilitates mold cleaning, slurry pouring and product loading and unloading. Combined with automated motion control, it significantly improves production efficiency and ease of operation. Attached Figure Description

[0015] Figure 1 This is a side view of a slide-type vacuum forming machine according to an embodiment of the present invention.

[0016] Figure 2This is a schematic diagram of the structure of a slide-type vacuum forming machine at a first angle in an embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of a slide-type vacuum forming machine under a second angle in an embodiment of this utility model.

[0018] Figure 4 This is a partial structural schematic diagram of a slide-table vacuum forming machine according to an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of a slide-type vacuum forming machine from the third angle in an embodiment of this utility model.

[0020] Figure 6 This is a schematic diagram of the sliding mechanism at the first angle in an embodiment of this utility model.

[0021] Figure 7 This is a schematic diagram of the sliding mechanism at the second angle in an embodiment of this utility model.

[0022] Figure 8 This is a partial structural schematic diagram of the sliding mechanism in an embodiment of this utility model.

[0023] Figure 9 for Figure 8 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 10 This is a schematic diagram of the connecting frame at the first angle in an embodiment of this utility model.

[0025] Figure 11 This is a schematic diagram of the connecting frame at the second angle in an embodiment of this utility model.

[0026] In the diagram: 1. Main hydraulic cylinder; 2. Fixed base frame; 3. Connecting column; 4. Fixed top frame; 5. Fixed plate; 6. Limiting sleeve; 7. Groove plate; 8. Toothed plate; 9. Sliding plate; 10. Lower mold; 11. Motor; 12. Transmission belt; 13. Gear; 14. Rotating top plate; 15. Fixed column; 16. Mold plate; 17. Upper mold; 18. Second hydraulic cylinder; 19. Vacuum hood; 20. Right-angle fixed plate; 21. Third hydraulic cylinder; 22. Inverted U-shaped plate; 23. Connecting frame; 24. Rotating frame; 25. Upper mold cover; 26. Fourth hydraulic cylinder. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this embodiment of the utility model, please refer to Figures 1 to 9 A sliding table vacuum forming machine includes a main cylinder 1, an upper mold 17, and a lower mold 10. The main cylinder 1 has a fixed outer shell connected to a fixed base frame 2. The fixed base frame 2 is connected to a connecting column 3, and the connecting column 3 is connected to a fixed top frame 4. The output end of the main cylinder 1 is connected to a fixed plate 5. The fixed plate 5 has symmetrically arranged limiting sleeves 6 on both sides. The limiting sleeves 6 are connected to the connecting column 3 and to a sliding mechanism. The sliding mechanism is connected to a sliding plate 9 and is used to drive the sliding plate 9 to move linearly along the fixed plate 5. The upper surface of the sliding plate 9 is detachably connected to the lower mold 10. The fixed top frame 4 is rotatably connected to a rotating top plate 14. The lower surface of the rotating top plate 14 is connected to the top of the fixed column 15. The connection is as follows: the bottom end of the fixed column 15 is connected to the mold plate 16, the mold plate 16 is connected to the upper mold 17, the lower mold 10 is used to hold the grouting material, the grouting material is injected into the lower mold 10 through the grouting equipment (not shown in the figure), the upper mold 17 is located above the lower mold 10, the rotating top plate 14 is connected to the fixed outer shell of the second oil cylinder 18, the output end of the second oil cylinder 18 is connected to the vacuum hood 19, the mold plate 9 is located inside the vacuum hood 19, the inside of the vacuum hood 19 is connected to the vacuum pumping equipment, the upper surface of the rotating top plate 14 is rotatably connected to the output end of the third oil cylinder 21, the fixed outer shell of the third oil cylinder 21 is rotatably connected to the inverted U-shaped plate 22, and the inverted U-shaped plate 22 is connected to the fixed top frame 4.

[0029] In the initial state, the sliding plate 9 is in the sliding state, and the vacuum cover 19 is in the rising inclined state.

[0030] During injection molding, the operator first sprays a release agent onto the surface of the upper mold 17, starts the slurry injection equipment (not shown in the figure), and injects the slurry into the lower mold 10. The sliding mechanism drives the lower mold 10 to move horizontally back, precisely resetting it to the center position below the fixed plate 5 (i.e., the molding station). The third hydraulic cylinder 21 moves in the opposite direction, driving the rotating top plate 14 to rotate downwards, so that the upper mold 17, vacuum hood 19, and other components rotate back to the working position. At this time, the upper mold 17 is precisely located above the lower mold 10. The main hydraulic cylinder 1 starts, and the piston rod rises upwards, driving the fixed plate 5 to rise, thereby pushing the sliding plate that has been reset to the position. 9 and the lower mold 10 move upward together. The second oil cylinder 18 drives the vacuum cover 19 to move downward along the fixed column 15 until the sliding plate 9 and the stationary vacuum cover 19 come into contact and close, forming a cavity. At this time, the vacuum pumping equipment (not shown in the figure) works to evacuate the cavity formed by the vacuum cover 19 and the sliding plate 9, so that the cavity is in a negative pressure state. After the vacuum is completed, the second oil cylinder 18 releases pressure, and the main oil cylinder 1 continues to work, driving the fixed plate 5, the sliding plate 9, the lower mold 10 and the vacuum cover 19 to move upward synchronously until the lower mold 10 and the stationary upper mold 17 close, forming a complete cavity.

[0031] After the necessary pressure holding and curing time is completed, stop the vacuuming first, and then introduce air into the vacuum chamber 19 to break the vacuum. The second oil cylinder 18 retracts, raising the vacuum chamber 19 and releasing the seal. The main oil cylinder 1 retracts, driving the fixed plate 5, the sliding plate 9 and the lower mold 10 with the blank attached to descend together to open the mold. After the mold is opened, the sliding mechanism drives the lower mold 10 to slide out for blank removal and material preparation.

[0032] In this embodiment, the bottom of the vacuum hood 19 is provided with a sealing strip to improve the sealing performance; the upper mold 17 and the lower mold 10 are provided with heating equipment to ensure that the slurry solidifies and forms.

[0033] As one embodiment of this utility model, please refer to Figures 1 to 9 The sliding mechanism includes: a groove plate 7, a toothed plate 8, a motor 11, a transmission belt 12, and a gear 13. The groove plate 7 has two sets, which are symmetrically arranged on both sides of the fixed plate 5. The groove plate 7 is connected to the limiting sleeve 6. The length of the groove plate 7 is greater than the sum of the length of the fixed plate 5 and the length of the sliding plate 9. Two sets of toothed plates 8 are symmetrically engaged on the lower surface of the sliding plate 9. The toothed plates 8 are located inside the groove plate 7 and are slidably engaged with it. The fixed housing of the motor 11 is connected to the groove plate 7. The output end of the motor 11 is connected to one end of the transmission belt 12. The other end of the transmission belt 12 is connected to the gear 13. The gear 13 is rotatably connected to the groove plate 7 and meshes with the toothed plate 8.

[0034] When the motor 11 is working, it drives the transmission belt 12 to rotate synchronously. The transmission belt 12 drives the gear 13 to rotate. The gear 13 drives the toothed plate 8 to move along the groove plate 7. The toothed plate 8 drives the sliding plate 9 to move, which in turn drives the lower mold 10 to move out or back.

[0035] In this embodiment, the toothed plate 8 is provided with a locking rod, and the sliding plate 9 is provided with a locking hole that matches the locking rod. The locking rod is inserted into the locking hole to position the sliding plate 9.

[0036] As one embodiment of this utility model, please refer to Figures 1 to 5 The rotating top plate 14 is connected to the right-angle fixing plate 20, and the right-angle fixing plate 20 is slidably connected to the outer wall of the vacuum cover 19 to ensure the longitudinal stable movement of the vacuum cover 19.

[0037] As one embodiment of this utility model, please refer to Figure 3 The vacuum chamber 19 has an observation window on its front side.

[0038] As one embodiment of this utility model, please refer to Figure 10 and Figure 11 The groove plate 7 is connected to the connecting frame 23, the connecting frame 23 is rotatably connected to the rotating frame 24, the rotating frame 24 is connected to the upper mold cover 25, the upper mold cover 25 is used to seal the lower mold 10, the connecting frame 23 is rotatably connected to one end of the fourth oil cylinder 26, and the other end of the fourth oil cylinder 26 is rotatably connected to the rotating frame 24.

[0039] After the CPU sole is made (i.e., after the first foaming molding), the lower mold 10 returns to its original position. At this time, PU material is poured into the CPU sole for a second foaming molding. After the PU material is poured in, the fourth hydraulic cylinder 26 extends, driving the rotating frame 24 to rotate, which in turn drives the upper mold cover 25 to rotate to abut against the lower mold 10, sealing and closing the mold. The heating equipment works, and after heating and molding, the fourth hydraulic cylinder 26 retracts, causing the upper mold cover 25 to rotate in the opposite direction. The worker then removes the dual-density material sole.

[0040] The working principle of this utility model is as follows: 1. Initial / removal position (sliding out and flipping):

[0041] The third hydraulic cylinder 21 is activated, causing the rotating top plate 14 and the connected upper mold 17, vacuum hood 19 and other components to rotate upwards at a certain angle (such as below 90°), clearing the area directly below.

[0042] When the motor 11 in the sliding mechanism is started, it drives the sliding plate 9 to slide the lower mold 10 horizontally from above the fixed plate 5 through the gear 13 and the toothed plate 8, and move it to a convenient operating position outside the equipment (i.e., the material preparation / parts picking station).

[0043] Operators perform operations such as cleaning the mold, placing inserts, and removing the blanks formed in the previous cycle at this workstation. After completion, the prepared slurry is injected into the lower mold 10 through the slurry injection equipment (not shown in the figure).

[0044] 2. Prepare the mold closing position (reset):

[0045] The sliding mechanism motor 11 starts in reverse, driving the sliding plate 9 carrying the lower mold 10 to move horizontally back and accurately reset to the center position below the fixed plate 5 (i.e., the forming station).

[0046] The third cylinder 21 reverses its action, causing the rotating top plate 14 to rotate downwards, so that components such as the upper mold 17 and vacuum hood 19 rotate back to their working positions. At this time, the upper mold 17 is precisely located above the lower mold 10.

[0047] 3. Mold closing and vacuum sealing:

[0048] When the main cylinder 1 is started, the piston rod rises upward, driving the fixed plate 5 to rise, thereby pushing the sliding plate 9 and the lower mold 10, which have been reset to their positions, to move upward together. The second cylinder 18 drives the vacuum cover 19 to move downward along the fixed column 15 until the sliding plate 9 and the stationary vacuum cover 19 come into contact and close, forming a cavity.

[0049] At this time, the vacuum pumping equipment (not shown in the figure) works to evacuate the cavity formed by the vacuum cover 19 and the sliding plate 9, so that the cavity is in a negative pressure state.

[0050] After the vacuuming is completed, the second oil cylinder 18 releases pressure, and the main oil cylinder 1 continues to work, driving the fixed plate 5, sliding plate 9, lower mold 10, and vacuum cover 19 to move upward synchronously until the lower mold 10 closes with the stationary upper mold 17 to form a complete cavity.

[0051] 4. Demolding and recycling:

[0052] After grouting and the necessary pressure holding and curing time are completed, stop vacuuming first, and then introduce air into the vacuum hood 19 to break the vacuum.

[0053] The second hydraulic cylinder 18 retracts, raising the vacuum cover 19 and releasing the seal;

[0054] The main hydraulic cylinder 1 retracts, causing the fixed plate 5, the sliding plate 9, and the lower mold 10 with the blank attached to it to descend together, thus opening the mold.

[0055] After the mold is opened, repeat step 1 to slide out the lower mold 10 for blank removal and material preparation, while the upper mold 17 can be cleaned as necessary, thus starting the next work cycle.

[0056] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0057] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sliding table type vacuum forming machine, comprising a main hydraulic cylinder, an upper mold, and a lower mold, characterized in that, The main hydraulic cylinder's fixed outer shell is connected to the fixed base frame, which is connected to the connecting column. The connecting column is connected to the fixed top frame. The output end of the main hydraulic cylinder is connected to the fixed plate. The fixed plate has symmetrically arranged limiting sleeves on both sides. The limiting sleeves are connected to the connecting column and the sliding mechanism. The sliding mechanism is connected to the sliding plate. The sliding mechanism is used to drive the sliding plate to move linearly along the fixed plate. The upper surface of the sliding plate is detachably connected to the lower mold. The fixed top frame is rotatably connected to the rotating top plate. The lower surface of the rotating top plate is connected to the top of the fixed column. The bottom end of the fixed column is connected to the mold plate, the mold plate is connected to the upper mold, the lower mold is used to hold the grouting material, the grouting material is injected into the lower mold through the grouting equipment, the upper mold is located above the lower mold, the rotating top plate is connected to the fixed outer shell of the second oil cylinder, the output end of the second oil cylinder is connected to the vacuum hood, the mold plate is located inside the vacuum hood, the inside of the vacuum hood is connected to the vacuum pumping equipment, the upper surface of the rotating top plate is rotatably connected to the output end of the third oil cylinder, the fixed outer shell of the third oil cylinder is rotatably connected to the inverted U-shaped plate, and the inverted U-shaped plate is connected to the fixed top frame.

2. The slide-table vacuum forming machine according to claim 1, characterized in that, The sliding mechanism includes: a grooved plate, a toothed plate, a motor, a transmission belt, and a gear. Two sets of grooved plates are symmetrically arranged on both sides of the fixed plate. The grooved plate is connected to a limiting sleeve. The length of the grooved plate is greater than the sum of the lengths of the fixed plate and the sliding plate. Two sets of toothed plates are symmetrically engaged on the lower surface of the sliding plate. The toothed plates are located within the grooved plates and are slidably engaged with them. The motor's fixed housing is connected to the grooved plate. The motor's output end is connected to one end of the transmission belt, and the other end of the transmission belt is connected to the gear. The gear is rotatably connected to the grooved plate, and the gear meshes with the toothed plate.

3. The slide-table vacuum forming machine according to claim 1, characterized in that, The rotating top plate is connected to the right-angle fixed plate, and the right-angle fixed plate is slidably connected to the outer wall of the vacuum chamber to ensure the longitudinal stable movement of the vacuum chamber.

4. The slide-table vacuum forming machine according to claim 1, characterized in that, The vacuum chamber has an observation window on its front.

5. A slide-table vacuum forming machine according to claim 2, characterized in that, The groove plate is connected to the connecting frame, the connecting frame is rotatably connected to the rotating frame, the rotating frame is connected to the upper mold cover, the upper mold cover is used to seal the lower mold, the connecting frame is rotatably connected to one end of the fourth oil cylinder, and the other end of the fourth oil cylinder is rotatably connected to the rotating frame.

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