Mold closing structure

Abstract

The utility model discloses a mold closing structure which comprises a lower mold and an upper mold, the lower mold and the upper mold are fixedly connected through an electric telescopic rod, a concentric-square-shaped plate is fixed at the bottom end of the upper mold, a concentric-square-shaped groove matched with the concentric-square-shaped plate is formed in the top end of the lower mold, a buffer plate is arranged in the concentric-square-shaped groove in a sliding mode, and the buffer plate is connected with the concentric-square-shaped groove through a sliding assembly. When the upper die and the lower die are assembled, the upper die drives the concentric-square-shaped plate to move synchronously, the concentric-square-shaped plate is inserted into the concentric-square-shaped groove, and under the movement impact of the concentric-square-shaped plate, the concentric-square-shaped plate is driven by the upper die to move synchronously, so that the concentric-square-shaped plate is inserted into the concentric-square-shaped groove. And the buffer plate is driven to move downwards and extrudes the buffer assembly during movement, so that buffer protection can be performed during die assembly of the upper die and the lower die under the cooperation of the buffer assembly, collision damage between the upper die and the lower die is reduced, long-time normal use of the die is facilitated, and the service life of the die is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic part extrusion dies, in particular to a die closing structure. Background Art

[0002] Moulds are various molds and tools used in industrial production to obtain the required products by methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. In the processing and forming of plastic parts such as plastic pipes, plastic plates, and special-shaped materials, moulds are required for mould closing and production.

[0003] For example, a mold closing structure proposed in the patent document with publication number CN220075471U, when the upper mold and the lower mold are closed, two hooks on one side of the upper mold that are installed inside the mounting cover by rotating the rotating shaft are close to the locking block on the side of the lower mold, and when the hook contacts the locking block, the inclined surface at the bottom of the hook and the inclined surface at the top of the lug push each other. At this time, the lugs on both sides of the locking block push the two sides of the hook to move, and the movement of the hook drives the spring hung on the top to stretch. After the upper mold continues to move and closes the mold with the lower mold, the groove opened in the middle of the hook is located on both sides of the lug. At this time, the hook is not under force and the spring resets, pulling the hook to rotate and reset. At this time, the lug is interspersed in the groove, so that the locking block locks the hook, so that the upper mold and the lower mold are tightly locked to avoid mold closing deviation caused by external force.

[0004] However, when the upper mold and the lower mold are closed, there is a certain impact force when the upper mold and the lower mold come into contact, which can easily cause collision and wear between the upper mold and the lower mold, thereby easily causing damage to the mold, affecting the normal use of the mold, and reducing the service life of the mold. Utility Model Content

[0005] The purpose of the utility model is to provide a mold clamping structure to solve the technical problem of collision and wear between the upper mold and the lower mold in the above background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A mold closing structure comprises: a lower mold and an upper mold, the lower mold and the upper mold are fixedly connected by an electric telescopic rod, a return plate is fixed to the bottom end of the upper mold, a return groove adapted to the return plate is provided at the top end of the lower mold, a buffer plate is slidably provided in the return groove, the buffer plate is connected to the return groove through a sliding assembly, a buffer assembly for buffering the buffer plate is provided in the return groove, a rubber pad is provided at the top end of the buffer plate that contacts the return plate, and the rubber pad is connected to the buffer plate through an installation assembly.

[0008] Furthermore: in order to maintain the stable movement of the buffer plate, the sliding assembly includes a first sliding block fixedly arranged on both sides of the buffer plate, and both sides of the inner wall of the return groove are provided with a first sliding groove for the first sliding block to slide.

[0009] Furthermore: in order to buffer the buffer plate, the buffer assembly includes a damper fixedly arranged between the buffer plate and the return groove, and the outer wall of the damper is sleeved with a first spring.

[0010] Furthermore: in order to facilitate the installation and replacement of the rubber pad, the installation assembly includes a mounting block fixedly arranged at the bottom end of the rubber pad, and the top end of the buffer plate is provided with a mounting groove adapted to the mounting block.

[0011] Furthermore: in order to seal the return plate and the return groove, a first airbag is fixed to the top of the inner wall of the first slide groove, a second airbag connected to the first airbag is fixed to the bottom of the inner wall of the first slide groove, and the bottom end of the first slider is provided with an extrusion component for extruding the second airbag.

[0012] Further: in order to squeeze the gas in the second airbag into the first airbag, the extrusion assembly includes a pressure block fixedly arranged at the bottom end of the first slider, and a pressure plate that contacts the pressure block is fixed at the top end of the second airbag, and the pressure plate is connected to the first slide groove through a reset assembly.

[0013] Furthermore: in order to automatically reset the pressure plate, the reset assembly includes a second slider fixedly arranged on one side of the pressure plate, the inner wall of the first slide groove is provided with a second slide groove for the second slider to slide, and the second slide groove is fixedly connected to the second slider through a second spring.

[0014] Furthermore: in order to ensure a tight connection with the first airbag, a sealing groove adapted to the first airbag is provided on the outer wall of the circular plate.

[0015] In summary, the present invention has the following beneficial effects:

[0016] ① When the upper mold and the lower mold are closed, the upper mold drives the synchronous movement of the return plate, so that the return plate is inserted into the return groove. Under the impact of the movement of the return plate, the buffer plate is driven to move downward. The buffer plate squeezes the buffer component during movement. With the cooperation of the buffer component, the upper mold and the lower mold are buffered and protected when the mold is closed, reducing the collision damage between the upper mold and the lower mold, facilitating the long-term normal use of the mold, and improving the service life of the mold.

[0017] ② When the return plate drives the buffer plate to move in the return groove, the buffer plate drives the movement of the first slider, and the first slider drives the extrusion assembly to squeeze the second airbag. Under the extrusion action, the second airbag transports gas into the first airbag, causing the first airbag to expand. After the first airbag expands, it can fill and seal the gap between the return plate and the return groove, thereby sealing the upper mold and the lower mold, avoiding poor sealing between the upper mold and the lower mold due to the gap, and improving the overall sealing effect of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the lower die plane of the utility model;

[0020] Figure 3 This is a schematic diagram of the connecting planar structure of the return plate and the return groove of the utility model;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0022] In the figure, 1. lower mold; 2. upper mold; 3. electric telescopic rod; 4. return plate; 5. return groove; 6. buffer plate; 7. sliding assembly; 71. first slider; 72. first slide groove; 8. buffer assembly; 81. damper; 82. first spring; 9. rubber pad; 10. mounting assembly; 101. mounting block; 102. mounting groove; 11. first airbag; 12. second airbag; 13. extrusion assembly; 131. pressing block; 132. pressing plate; 14. reset assembly; 141. second slider; 142. second slide groove; 143. second spring; 15. sealing groove. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] See also Figure 1-Figure 4 , this utility model provides a technical solution:

[0025] A mold closing structure includes: a lower mold 1 and an upper mold 2, the lower mold 1 and the upper mold 2 are fixedly connected by an electric telescopic rod 3, a return plate 4 is fixed to the bottom end of the upper mold 2, a return groove 5 adapted to the return plate 4 is opened at the top of the lower mold 1, a buffer plate 6 is slidably provided in the return groove 5, the buffer plate 6 is connected to the return groove 5 through a sliding component 7, a buffer component 8 for buffering the buffer plate 6 is provided in the return groove 5, a rubber pad 9 is provided on the top of the buffer plate 6 to conflict with the return plate 4, and the rubber pad 9 is connected to the buffer plate 6 through an installation component 10.

[0026] In this embodiment, when the mold needs to be closed, the movement of the electric telescopic rod 3 drives the upper mold 2 to move downward, and the upper mold 2 and the lower mold 1 can be closed and connected, and when the upper mold 2 moves downward, it drives the synchronous movement of the return plate 4, so that the return plate 4 moves into the return groove 5, and under the impact of the movement of the return plate 4, the rubber pad 9 and the buffer plate 6 are driven to move downward, and the buffer plate 6 squeezes the buffer component 8 during movement, and with the cooperation of the buffer component 8, the upper mold 2 and the lower mold 1 can be buffered and protected when the mold is closed, thereby reducing the collision damage between the upper mold 2 and the lower mold 1, facilitating the long-term normal use of the mold, and improving the service life of the mold.

[0027] In a further embodiment, Figure 2-4 As shown, the sliding assembly 7 includes a first slider 71 fixedly arranged on both sides of the buffer plate 6, and a first sliding groove 72 for the first slider 71 to slide is provided on both sides of the inner wall of the return groove 5. The buffer assembly 8 includes a damper 81 fixedly arranged between the buffer plate 6 and the return groove 5, and the outer wall of the damper 81 is sleeved with a first spring 82. The installation assembly 10 includes a mounting block 101 fixedly arranged at the bottom end of the rubber pad 9, and the top of the buffer plate 6 is provided with a mounting groove 102 adapted to the mounting block 101.

[0028] When the electric telescopic rod 3 drives the upper mold 2 to move downward for mold closing, the upper mold 2 drives the return plate 4 to move downward. When the return plate 4 moves into the return groove 5, the return plate 4 first hits the rubber pad 9 on the buffer plate 6, and with the cooperation of the mounting block 101 and the mounting groove 102, it is convenient to install and replace the rubber pad 9. Under the impact of the return plate 4, the buffer plate 6 is driven to move downward. At the same time, with the cooperation of the first slider 71 and the first slide groove 72, it is convenient to provide auxiliary support for the buffer plate 6 to maintain the stability of the movement of the buffer plate 6. When the buffer plate 6 moves downward, it squeezes the damper 81 and the first spring 82, and with the cooperation of the damper 81 and the first spring 82, the upper mold 2 and the lower mold 1 can be buffered and protected when the mold is closed, reducing the collision damage between the upper mold 2 and the lower mold 1, facilitating the long-term normal use of the mold, and improving the service life of the mold.

[0029] In a further preferred embodiment of the present invention, Figure 3 As shown, a first airbag 11 is fixed to the top of the inner wall of the first slide groove 72, a second airbag 12 connected to the first airbag 11 is fixed to the bottom of the inner wall of the first slide groove 72, and an extrusion component 13 for extruding the second airbag 12 is provided at the bottom end of the first slider 71.

[0030] When the return plate 4 drives the buffer plate 6 to move downward, the buffer plate 6 drives the first slider 71 to move downward, and the first slider 71 drives the extrusion assembly 13 to squeeze the second airbag 12. Under the extrusion action, the second airbag 12 transports the gas to the first airbag 11, causing the first airbag 11 to expand. After the first airbag 11 expands, it can fill and seal the gap between the return plate 4 and the return groove 5, thereby sealing the upper mold 2 and the lower mold 1, avoiding poor sealing between the upper mold 2 and the lower mold 1 due to the gap, and improving the overall sealing effect of the mold.

[0031] In a further embodiment, Figure 3-4 As shown, the extrusion assembly 13 includes a pressure block 131 fixedly arranged at the bottom end of the first slider 71, and a pressure plate 132 in conflict with the pressure block 131 is fixed at the top of the second airbag 12. The pressure plate 132 is connected to the first slide groove 72 through the reset assembly 14. The reset assembly 14 includes a second slider 141 fixedly arranged on one side of the pressure plate 132. The inner wall of the first slide groove 72 is provided with a second slide groove 142 for the second slider 141 to slide. The second slide groove 142 is fixedly connected to the second slider 141 through a second spring 143. The outer wall of the return plate 4 is provided with a sealing groove 15 adapted to the first airbag 11.

[0032] When the return plate 4 moves into the return groove 5, the return plate 4 drives the buffer plate 6 to move downward, the buffer plate 6 drives the first slider 71 to move downward, the first slider 71 drives the pressure block 131 to move downward, and the pressure block 131 squeezes the pressure plate 132 when it moves downward, and the pressure plate 132 squeezes the second airbag 12. Under the squeezing action, the second airbag 12 transports gas into the first airbag 11, causing the first airbag 11 to expand. After the first airbag 11 expands, it fills into the sealing groove 15, and the gap between the return plate 4 and the return groove 5 can be filled and sealed, thereby sealing the upper mold 2 and The lower mold 1 is sealed to avoid poor sealing between the upper mold 2 and the lower mold 1 due to the gap, thereby improving the overall sealing effect of the mold. When the mold needs to be separated, when the return plate 4 moves upward, the buffer plate 6 drives the first slider 71 to move upward. At this time, there is no contact between the pressure block 131 and the pressure plate 132. At this time, under the elastic action of the second spring 143, the second slider 141 is driven to reset, and the second slider 141 drives the pressure plate 132 to reset. The pressure plate 132 stops squeezing the second airbag 12. At this time, the gas in the first airbag 11 can flow back to the second airbag 12.

[0033] Brief description of the usage process:

[0034] During use, when the mold needs to be closed, the upper mold 2 is driven downward by the movement of the electric telescopic rod 3, so that the upper mold 2 and the lower mold 1 can be closed and connected, and when the upper mold 2 moves downward, the synchronous movement of the return plate 4 is driven, so that the return plate 4 moves into the return groove 5. Under the impact of the movement of the return plate 4, the rubber pad 9 and the buffer plate 6 are driven to move downward. When the buffer plate 6 moves downward, it squeezes the damper 81 and the first spring 82, and the damper 81 and the first spring 82 cooperate to provide buffer protection for the upper mold 2 and the lower mold 1 when the mold is closed, thereby reducing the collision damage between the upper mold 2 and the lower mold 1, facilitating the long-term normal use of the mold, and improving the service life of the mold.

[0035] And when the buffer plate 6 moves downward, the buffer plate 6 drives the first slider 71 to move downward, and the first slider 71 drives the pressure block 131 to move downward. When the pressure block 131 moves downward, it squeezes the pressure plate 132, and the pressure plate 132 squeezes the second airbag 12. Under the squeezing action, the second airbag 12 transports gas to the first airbag 11, causing the first airbag 11 to expand. After the first airbag 11 expands, it fills into the sealing groove 15, and the gap between the return plate 4 and the return groove 5 can be filled and sealed, thereby sealing the upper mold 2 and the lower mold 1, avoiding poor sealing between the upper mold 2 and the lower mold 1 due to the gap, and improving the overall sealing effect of the mold.

[0036] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A mold clamping structure comprising: A lower mold (1) and an upper mold (2), wherein the lower mold (1) and the upper mold (2) are fixedly connected via an electric telescopic rod (3), and are characterized in that: a return plate (4) is fixed to the bottom end of the upper mold (2), a return groove (5) adapted to the return plate (4) is provided at the top end of the lower mold (1), a buffer plate (6) is slidably provided in the return groove (5), the buffer plate (6) is connected to the return groove (5) via a sliding component (7), a buffer component (8) for buffering the buffer plate (6) is provided in the return groove (5), a rubber pad (9) is provided at the top end of the buffer plate (6) and contacts the return plate (4), and the rubber pad (9) is connected to the buffer plate (6) via an installation component (10).

2. The mold clamping structure according to claim 1, characterized in that: The sliding assembly (7) comprises first sliding blocks (71) fixedly arranged on both sides of the buffer plate (6), and first sliding grooves (72) for sliding the first sliding blocks (71) are provided on both sides of the inner wall of the return groove (5).

3. The mold clamping structure according to claim 2, characterized in that: The buffer assembly (8) comprises a damper (81) fixedly arranged between the buffer plate (6) and the return groove (5), and the outer wall of the damper (81) is sleeved with a first spring (82).

4. The mold clamping structure according to claim 3, characterized in that: The mounting assembly (10) comprises a mounting block (101) fixedly arranged at the bottom end of the rubber pad (9), and a mounting groove (102) adapted to the mounting block (101) is provided at the top end of the buffer plate (6).

5. The mold clamping structure according to claim 2, characterized in that: A first airbag (11) is fixed to the top of the inner wall of the first chute (72), a second airbag (12) connected to the first airbag (11) is fixed to the bottom of the inner wall of the first chute (72), and an extrusion component (13) for extruding the second airbag (12) is provided at the bottom end of the first slider (71).

6. The mold clamping structure according to claim 5, characterized in that: The extrusion assembly (13) includes a pressing block (131) fixedly arranged at the bottom end of the first slider (71); a pressing plate (132) in contact with the pressing block (131) is fixed at the top end of the second airbag (12); and the pressing plate (132) is connected to the first slide groove (72) through a reset assembly (14).

7. The mold clamping structure according to claim 6, characterized in that: The reset assembly (14) includes a second slider (141) fixedly arranged on one side of the pressure plate (132); the inner wall of the first slide groove (72) is provided with a second slide groove (142) for the second slider (141) to slide; the second slide groove (142) is fixedly connected to the second slider (141) via a second spring (143).

8. The mold clamping structure according to claim 7, characterized in that: The outer wall of the circular plate (4) is provided with a sealing groove (15) adapted to the first air bag (11).

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