Mold convenient to demold

Abstract

The invention relates to a mold convenient to demold, which relates to the technical field of molds and comprises a bottom plate. Through the design of a lower movable groove, a lower movable plate, a sliding rod, a circular plate, a lower sliding rod, a lower conical ejection block and a lower connecting spring structure, in the demolding process, when an upper mold drives an upper mold core to move upwards to be separated from a lower mold core, the elastic restoring force of the lower connecting spring can push the lower movable plate to slide upwards in the lower movable groove, and the lower mold core is separated from the lower mold core; a circular plate at the top end of the sliding rod can be ejected out of a circular groove, a lower conical ejection block at the top end of the lower sliding rod can stretch out of a lower conical hole, and the lower conical ejection block stretches out to eject the workpiece structure, so that the workpiece can be integrally ejected from the lower die core; and the situation that the extending part is adhered to the lower mold due to more special-shaped structures is effectively avoided, rapid and convenient demolding of the automobile workpiece is realized, and the demolding efficiency of the mold is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of molds, in particular to a mold facilitating demolding. BACKGROUND

[0002] There are various types of automobile parts, and as people's demand for cars becomes higher and higher, the market for automobile parts also becomes larger. In order to improve production efficiency, injection molding method is gradually introduced in the manufacturing of automobile parts. Injection molding is a processing method used in batch production of some complex-shaped parts. Injection mold is a tool for producing plastic products. It refers to the process of injecting molten plastic into a mold by an injection molding machine under high pressure, and then obtaining a shaped product after cooling and solidification. The use of injection molding method is beneficial to improve the efficiency of automobile parts production.

[0003] In the production process of the existing automobile parts workpiece production mold, the existing automobile parts workpiece production mold has many special-shaped structures on the top. After injection molding is completed, the injection molded automobile parts workpiece finished product is easily bonded to the lower mold, which makes it difficult to quickly demold the molded automobile parts workpiece, reduces the demolding efficiency of the existing automobile parts workpiece production mold, and solves the above problems. Therefore, a mold facilitating demolding is proposed. SUMMARY

[0004] 1. Technical problems solved The purpose of the present application is to provide a mold facilitating demolding, which has the advantages of easy demolding of ejection, solves the problem that the workpiece finished product is easily bonded to the lower mold, and is not convenient for quickly demolding the molded workpiece.

[0005] The mold facilitating demolding provided by the present application adopts the following technical scheme: a bottom plate is provided, the top corners of the bottom plate are fixedly connected with connecting rods, the top ends of the connecting rods are fixedly connected with a top plate, the top of the bottom plate is fixedly connected with connecting blocks on opposite sides, the top of the connecting blocks is fixedly connected with a lower mold, two electric push rods are fixedly connected inside the top plate, the bottom ends of the electric push rods are fixedly connected with a connecting plate, and the bottom of the connecting plate is fixedly connected with an upper mold. The lower mold is internally provided with a lower mold core, the upper mold is internally provided with an upper mold core, two lower movable grooves are symmetrically arranged in the lower mold, two contraction grooves are arranged at the top of the lower movable groove, a lower conical hole is arranged at the top of the contraction groove, two circular grooves are arranged at the opposite sides of the lower mold core, a lower movable plate is slidably connected in the lower movable groove, two slide rods and two lower slide rods are fixedly connected to the top of the lower movable plate, the slide rod slides through the circular groove at the top, and a circular plate is fixedly connected to the top of the slide rod, the lower slide rod slides through the contraction groove and the lower conical hole at the top, and a lower conical top block is fixedly connected to the top of the lower slide rod, a lower connecting spring is sleeved on the surface of the lower slide rod, and the lower connecting spring is fixedly connected to the top of the lower movable plate and the top of the contraction groove. By adopting the above technical scheme, through the design of the lower movable groove, the lower movable plate, the slide rod, the circular plate, the lower slide rod, the lower conical top block and the lower connecting spring structure, when the upper mold core moves upward to separate from the lower mold core during demolding, the elastic restoring force of the lower connecting spring pushes the lower movable plate to slide upward in the lower movable groove, thereby driving the slide rod and the lower slide rod to rise synchronously, the circular plate at the top of the slide rod is pushed out of the circular groove, and the lower conical top block at the top of the lower slide rod is stretched out of the lower conical hole, so that the workpiece structure can be pushed, and the workpiece can be lifted integrally from the lower mold core, effectively avoiding the situation that the workpiece is adhered to the lower mold due to many special-shaped structures, realizing fast and convenient demolding of the automobile workpiece, and improving the demolding efficiency of the mold.

[0006] Preferably, a plurality of forming grooves are arranged at the top of the upper mold core, and friction lines are arranged on the inner side of the forming grooves. By adopting the above technical scheme, through the design of the forming groove and the friction line, the forming groove can cooperate with the lower mold core to form the specific structure required on the surface of the workpiece during the injection molding of the automobile workpiece, and the friction line can increase the friction between the workpiece and the upper mold core after molding. The setting of the friction can ensure that the molten material can better fill the mold cavity during injection molding, so that the structure details on the surface of the workpiece are accurately copied. When demolding starts, the upper mold core moves upward, and due to the contact characteristics of the friction line with the surface of the workpiece, a slight upward pulling force is first generated on the workpiece, which cooperates with the pushing action of the lower conical top block and the circular plate at the lower mold core to form a synergistic force in the upward and downward directions, further preventing the workpiece from deforming due to uneven stress at the initial stage of demolding, and ensuring the structural integrity of the workpiece during demolding. Therefore, the problem of difficult demolding caused by many special-shaped structures and complex stress of the workpiece during demolding of the traditional mold is more effectively solved.

[0007] Preferably, the lower movable groove is fixedly connected with a lower limiting rod at the inner bottom end, and a sliding hole is formed in the lower sliding rod. By adopting the above technical scheme, through the cooperation of the lower limiting rod and the sliding hole, accurate guiding effect can be provided for the movement of the lower sliding rod, transverse deviation of the lower sliding rod during upward and downward sliding can be avoided, stable movement of the lower sliding rod along the preset track can be ensured, and the ejection action can be more stable and orderly, thereby further improving the ejection reliability of the mold when processing workpieces with special-shaped structures.

[0008] Preferably, the upper mold is provided with an upper movable groove at each of the four corners, an upper conical hole is formed in the inner bottom end of the upper movable groove, a plurality of upper limiting rods are fixedly connected in the upper movable groove, a sliding cylinder is slidably connected to the surface of the upper limiting rod, an upper movable plate is fixedly connected to the surface of the sliding cylinder, an upper sliding rod is fixedly connected to the bottom of the upper movable plate, the upper sliding rod slides through the upper conical hole at the bottom end and is fixedly connected with an upper conical ejector, upper connecting springs are sleeved on the surfaces of the upper limiting rods and the upper sliding rod, the upper ends of the upper connecting springs are fixedly connected to the bottom of the upper movable plate, and the lower ends of the upper connecting springs are fixedly connected to the inner bottom end of the upper movable groove. By adopting the above technical scheme, through the cooperation of the upper movable groove, the upper conical hole, the upper limiting rod, the sliding cylinder, the upper movable plate, the upper sliding rod, the upper conical ejector, the upper connecting springs and the L-shaped actuating plate, when ejection of the formed workpiece is needed, the L-shaped actuating plate is actuated downward to drive the upper movable plate to slide downward along the upper limiting rod, at this time, the upper connecting springs are compressed, the upper sliding rod drives the upper conical ejector to move downward, the upper conical ejector is separated from the inner wall of the upper conical hole, so that the workpiece can be pushed out of the upper mold, and when the L-shaped actuating plate is released, the upper connecting springs recover from deformation, the upper movable plate is pulled back to the original position, and the upper conical ejector re-seals the upper conical hole, so as to ensure the integrity of the workpiece during mold closing and forming.

[0009] Preferably, two lower limiting rods are fixedly connected to the top of the bottom plate on opposite sides, a lower limiting block is fixedly connected to the top end of the lower limiting rod, two upper limiting rods are fixedly connected to the bottom of the top plate on opposite sides, an upper limiting block is fixedly connected to the bottom end of the upper limiting rod, the four lower limiting rods and the four upper limiting rods are on the same axis, and the contact end of the L-shaped actuating plate is between the lower limiting block and the upper limiting block. By adopting the technical scheme, the lower limiting rod, the lower limiting block, the upper limiting rod and the upper limiting block are arranged, the mold closing process between the top plate and the bottom plate can be guided and limited, when the L-shaped toggle plate contacts the upper limiting block, the excessive upward movement of the L-shaped toggle plate can be limited, the L-shaped toggle plate can be prevented from continuing to move upward, the upper sliding rod can be moved out of the upper conical hole, and the upper conical top block can be ensured to accurately separate from the workpiece.

[0010] Preferably, two through holes are arranged on opposite sides of the connecting plate, and the upper limiting rod is arranged in the through hole. By adopting the technical scheme, the through hole is arranged, the upper limiting rod can pass through the connecting plate, the upper limiting rod can smoothly move up and down during mold closing and mold opening, and the connecting plate can be prevented from hindering the upper limiting rod.

[0011] Preferably, an annular clamping groove is arranged in the upper mold core, the forming groove is arranged in the annular clamping groove, an annular clamping block is arranged in the lower mold core, the circular groove is arranged on the outer side of the annular clamping block, and the lower conical hole is arranged on the inner side of the annular clamping block. By adopting the technical scheme, the cooperation structure of the annular clamping groove and the annular clamping block is arranged, the upper mold core and the lower mold core can be accurately positioned during mold closing, the relative displacement of the upper mold core and the lower mold core in the horizontal direction can be prevented, meanwhile, the annular sealing structure formed after the annular clamping block is embedded in the annular clamping groove can also reduce the possibility of molten material overflowing from the mold gap during injection molding, and the forming quality of the workpiece can be improved.

[0012] Preferably, a circular hole is arranged in the top plate, and the circular hole is arranged between the two electric push rods. By adopting the technical scheme, the circular hole is arranged, and a stable placement channel can be provided for the injection pipe.

[0013] 2. Beneficial effects In summary, the present application has at least one of the following beneficial technical effects: 1. The mold provided by the present application is convenient to demold, the lower movable groove, the lower movable plate, the slide rod, the circular plate, the lower sliding rod, the lower conical top block and the lower connecting spring structure are arranged, when the upper mold and the upper mold core move upward to separate from the lower mold core during demolding, the elastic restoring force of the lower connecting spring pushes the lower movable plate to slide upward in the lower movable groove, and then drives the slide rod and the lower sliding rod to synchronously move upward, the circular plate at the top end of the slide rod is pushed out of the circular groove, the lower conical top block at the top end of the lower sliding rod is stretched out of the lower conical hole, the workpiece structure can be pushed by the lower conical top block, the workpiece can be integrally pushed up from the lower mold core, the situation that the workpiece is stuck on the lower mold due to many special-shaped structures is avoided, the automobile workpiece can be quickly and conveniently demolded, and the demolding efficiency of the mold is improved.

[0014] 2. The present application provides a mold facilitating demolding, by setting a forming groove and a frictional groove, in the injection molding process of an automobile workpiece, the forming groove can cooperate with the lower mold core to form the specific structure required by the workpiece surface, and the frictional groove can increase the friction between the workpiece after forming and the upper mold core, the setting of the friction can ensure that the molten material can better fill the mold cavity during injection, so that the structure details of the workpiece surface can be accurately copied, when demolding starts, the upper mold core moves upward, due to the contact characteristics of the frictional groove and the workpiece surface, a slight upward pulling force is first generated on the workpiece, cooperating with the pushing action of the lower conical top block and the circular plate at the lower mold core, a synergistic force in the upward and downward directions can be formed, further preventing the workpiece from deforming due to uneven local stress at the initial demolding stage, ensuring the structural integrity of the workpiece during demolding, thereby more effectively solving the problem of difficult demolding caused by complex stress of the workpiece due to the many special-shaped structures of the traditional mold.

[0015] 3. The present application provides a mold facilitating demolding, by the mutual cooperation of the upper movable groove, the upper conical hole, the upper limiting rod, the sliding cylinder, the upper movable plate, the upper sliding rod, the upper conical top block, the upper connecting spring and the L-shaped toggle plate component, when demolding of the formed workpiece is needed, the L-shaped toggle plate is pushed downward, which can drive the upper movable plate to slide downward along the upper limiting rod, at this time the upper connecting spring is compressed, the upper sliding rod drives the upper conical top block to move downward, which can separate the upper conical top block from the inner wall of the upper conical hole, so that the workpiece can be pushed out of the upper mold, and when the L-shaped toggle plate is released, the upper connecting spring restores the deformation, pulls the upper movable plate to reset, and the upper conical top block reseals the upper conical hole, which can ensure the integrity of the workpiece during mold forming. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structure schematic view of the front view of the present application; Figure 2 is a structure schematic view of the side view of the present application; Figure 3 is a structure schematic view of the bottom plate in the present application; Figure 4 is a structure schematic view of the connecting block in the present application; Figure 5 is a structure schematic view of the top plate in the present application; Figure 6 is a structure schematic view of the cross section of the lower mold in the present application; Figure 7 is a structure schematic view of the cross section of the upper mold in the present application; Figure 8 is Figure 6 is an enlarged structure schematic view of A in the present application.

[0017] Wherein, 1, the bottom plate; 101, connecting rod; 102, top plate; 103, electric push rod; 104, round hole; 105, lower limit rod; 106, lower limit block; 107, upper limit rod; 108, upper limit block; 2, connecting block; 201, lower mold; 202, lower mold core; 203, annular clamping block; 204, lower movable slot; 205, lower conical hole; 206, shrinkage slot; 207, circular groove; 208, lower movable plate; 209, slide rod; 2010, circular plate; 2011, lower sliding rod; 2012, lower conical top block; 2013, lower connecting spring; 2014, lower limit rod; 2015, sliding hole; 3, connecting plate; 301, upper mold; 302, upper mold core; 303, forming groove; 304, friction pattern; 305, annular clamping groove; 306, upper movable slot; 307, upper limit rod; 308, slide cylinder; 309, upper movable plate; 3010, upper sliding rod; 3011, upper conical hole; 3012, upper conical top block; 3013, upper connecting spring; 3014, L-shaped push plate; 3015, through hole. DETAILED DESCRIPTION

[0018] The following description will be made in conjunction with the accompanying drawings. Figure 1 The accompanying drawings are included to provide a further understanding of the application. Figure 8 The application will be described in further detail below.

[0019] Example 1: A mold convenient for demolding, referring to Figure 1 , Figure 3 , Figure 4 , Figure 7 and Figure 8 , including the bottom plate 1, the top of the bottom plate 1 is fixedly connected with the connecting rod 101 at four corners, the top end of the connecting rod 101 is fixedly connected with the top plate 102, the top of the bottom plate 1 is fixedly connected with the connecting block 2 at opposite sides, the top of the connecting block 2 is fixedly connected with the lower mold 201, the inside of the top plate 102 is fixedly connected with two electric push rods 103, the bottom end of the electric push rod 103 is fixedly connected with the connecting plate 3, and the bottom of the connecting plate 3 is fixedly connected with the upper mold 301; The lower mold 201 is internally provided with a lower mold core 202, the upper mold 301 is internally provided with an upper mold core 302, two lower movable grooves 204 are arranged in the lower mold 201, the two lower movable grooves 204 are symmetrically arranged in the lower mold 201, two contraction grooves 206 are arranged at the top of the lower movable groove 204, a lower conical hole 205 is arranged at the top of the contraction groove 206, two circular grooves 207 are arranged at the opposite sides of the lower mold core 202, a lower movable plate 208 is slidably connected in the lower movable groove 204, two slide rods 209 and two lower slide rods 2011 are fixedly connected to the top of the lower movable plate 208, the slide rod 209 slides through the circular groove 207, a circular plate 2010 is fixedly connected to the top of the slide rod 209, the lower slide rod 2011 slides through the contraction groove 206 and the lower conical hole 205, a lower conical top block 2012 is fixedly connected to the top of the lower slide rod 2011, a lower connecting spring 2013 is sleeved on the surface of the lower slide rod 2011, the two ends of the lower connecting spring 2013 are fixedly connected to the top of the lower movable plate 208 and the top of the contraction groove 206, respectively, through the design of the lower movable groove 204, the lower movable plate 208, the slide rod 209, the circular plate 2010, the lower slide rod 2011, the lower conical top block 2012 and the lower connecting spring 2013, when the upper mold 301 drives the upper mold core 302 to move upward to separate from the lower mold core 202 during demolding, the elastic restoring force of the lower connecting spring 2013 pushes the lower movable plate 208 to slide upward in the lower movable groove 204, and then drives the slide rod 209 and the lower slide rod 2011 to rise synchronously, the circular plate 2010 at the top of the slide rod 209 is pushed out of the circular groove 207, and the lower conical top block 2012 at the top of the lower slide rod 2011 is stretched out of the lower conical hole 205, through the stretching of the lower conical top block 2012, the workpiece structure can be pushed, so that the workpiece can be integrally lifted from the lower mold core 202, effectively avoiding the situation that the workpiece is adhered to the lower mold due to too many special-shaped structures, realizing the rapid and convenient demolding of the automobile workpiece, and improving the demolding efficiency of the mold.

[0020] Please refer to Figure 7 and Figure 8The upper mold core 302 is internally provided with a plurality of forming grooves 303 at the top end, and the inner side of the forming grooves 303 is provided with friction lines 304. Through the setting of the forming grooves 303 and the friction lines 304, the forming grooves 303 can cooperate with the lower mold core 202 to form the specific structure required by the workpiece surface during the injection molding of the automobile workpiece, and the friction lines 304 can increase the friction between the workpiece after forming and the upper mold core 302. The setting of the friction can ensure that the molten material can better fill the mold cavity during injection molding, so that the structure details of the workpiece surface can be accurately copied. When demolding begins, the upper mold core 302 moves upward, and due to the contact characteristics of the friction lines 304 with the workpiece surface, a slight upward pulling force will be generated on the workpiece first. Cooperate with the pushing action of the lower conical top block 2012 and the circular plate 2010 at the lower mold core 202, a synergistic force in the upward and downward directions can be formed, which can further prevent the workpiece from deforming due to uneven stress at the initial demolding stage, and ensure the structural integrity of the workpiece during demolding. Thus, the problem of difficult demolding caused by complex stress of the workpiece due to the many special-shaped structures of the traditional mold is more effectively solved. The lower movable groove 204 is internally fixedly connected with a lower limit rod 2014 at the bottom end, and the lower sliding rod 2011 is internally provided with a sliding hole 2015, and the lower limit rod 2014 is located in the sliding hole 2015. Through the cooperation of the lower limit rod 2014 and the sliding hole 2015, the movement of the lower sliding rod 2011 can be accurately guided, the horizontal deviation of the lower sliding rod 2011 during upward and downward sliding can be avoided, and stable movement along the preset trajectory can be ensured. At the same time, the pushing and demolding action can be more stable and orderly, and the demolding reliability of the mold when processing special-shaped workpieces can be further improved.

[0021] Please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8The upper movable slot 306 is internally provided with an upper conical hole 3011 at the bottom end, a plurality of upper limiting rods 307 are fixedly connected in the upper movable slot 306, a sliding cylinder 308 is slidingly connected to the surface of the upper limiting rod 307, an upper movable plate 309 is fixedly connected to the surface of the sliding cylinder 308, an upper sliding rod 3010 is fixedly connected to the bottom of the upper movable plate 309, the upper sliding rod 3010 slides through the upper conical hole 3011 at the bottom end and is fixedly connected with an upper conical top block 3012, the surfaces of the upper limiting rod 307 and the upper sliding rod 3010 are sleeved with upper connecting springs 3013, the upper ends of the upper connecting springs 3013 are fixedly connected to the bottom of the upper movable plate 309 and the bottom end of the upper movable slot 306, respectively, one side of the upper movable plate 309 is located at the side of the upper mold 301 and is fixedly connected with an L-shaped pulling plate 3014, through the cooperation of the upper movable slot 306, the upper conical hole 3011, the upper limiting rod 307, the sliding cylinder 308, the upper movable plate 309, the upper sliding rod 3010, the upper conical top block 3012, the upper connecting springs 3013 and the L-shaped pulling plate 3014, when the molded workpiece needs to be demolded, the L-shaped pulling plate 3014 is pulled down to drive the upper movable plate 309 to slide downward along the upper limiting rod 307, at this time, the upper connecting springs 3013 are compressed, the upper sliding rod 3010 drives the upper conical top block 3012 to move downward, so that the upper conical top block 3012 is separated from the inner wall of the upper conical hole 3011, thereby the workpiece can be pushed out of the upper mold 301, and after the L-shaped pulling plate 3014 is loosened, the upper connecting springs 3013 restore the deformation to pull the upper movable plate 309 to reset, the upper conical top block 3012 re-seals the upper conical hole 3011, which can ensure the integrity of the workpiece during the molding process, the bottom plate 1 is fixedly connected with two lower limiting rods 105 on the top of the relative two sides, the lower limiting rod 105 is fixedly connected with a lower limiting block 106 at the top end, the top plate 102 is fixedly connected with two upper limiting rods 107 on the bottom of the relative two sides, the upper limiting rod 107 is fixedly connected with an upper limiting block 108 at the bottom end, the four lower limiting rods 105 are on the same axis as the four upper limiting rods 107, the contact end of the L-shaped pulling plate 3014 is between the lower limiting block 106 and the upper limiting block 108, by setting the lower limiting rod 105, the lower limiting block 106, the upper limiting rod 107 and the upper limiting block 108, the molding process between the top plate 102 and the bottom plate 1 can be guided and limited, when the L-shaped pulling plate 3014 contacts the upper limiting block 108, the excessive upward movement of the L-shaped pulling plate 3014 can be limited, the L-shaped pulling plate 3014 can be prevented from continuing to move upward, so that the upper sliding rod 3010 can be moved out of the upper conical hole 3011, and it can be ensured that the upper conical top block 3012 can accurately separate from the workpiece.

[0022] Please refer to Figure 2 , Figure 3 and Figure 7Two through holes 3015 are formed in opposite sides of the inner part of the connecting plate 3, and the upper limiting rod 107 is in the through holes 3015. The through holes 3015 can provide a channel for the upper limiting rod 107 to pass through the connecting plate 3, so that the upper limiting rod 107 can move up and down smoothly during the closing and opening of the mold, avoiding the hindering of the connecting plate 3. The upper mold core 302 is internally provided with an annular clamping groove 305, and the forming groove 303 is arranged inside the annular clamping groove 305. The lower mold core 202 is internally provided with an annular clamping block 203, the circular groove 207 is arranged outside the annular clamping block 203, and the lower conical hole 205 is arranged inside the annular clamping block 203. The cooperation structure of the annular clamping groove 305 and the annular clamping block 203 can realize the accurate positioning of the upper mold core 302 and the lower mold core 202 during the closing of the mold, preventing relative displacement of the two in the horizontal direction. At the same time, the annular sealing structure formed after the annular clamping block 203 is embedded in the annular clamping groove 305 can also reduce the possibility of molten material overflowing from the mold gap during injection molding, improving the forming quality of the workpiece. The top plate 102 is internally provided with a circular hole 104, and the circular hole 104 is between the two electric push rods 103. The circular hole 104 can provide a stable placement channel for the injection pipe.

[0023] The implementation principle of the embodiment of the application is as follows: when performing injection molding of automobile workpieces, first, the electric push rod 103 drives the connecting plate 3 to drive the upper mold 301 to move downward, so that the upper mold core 302 and the lower mold core 202 are closed, and the annular clamping block 203 can be embedded in the annular clamping groove 305 to achieve accurate positioning. Then, injection molding is completed through the injection pipe. After the workpiece is cooled and formed, the electric push rod 103 drives the upper mold 301 to move upward. At this time, the lower connecting spring 2013 pushes the lower movable plate 208 upward, and the circular plate 2010 is ejected from the circular groove 207, and the lower conical ejector block 2012 is extended from the lower conical hole 205. By extending the lower conical ejector block 2012 from the lower conical hole 205, an upward thrust can be formed on the bottom of the workpiece. At the same time, the friction lines 304 in the upper mold core 302 can produce a slight lifting on the workpiece. The upper and lower cooperative action can avoid deformation of the workpiece and ensure the structural integrity of the workpiece during demolding. Then, under the action of the upper limiting block 108, the L-shaped ejector plate 3014 can be pushed downward, and then the upper movable plate 309 moves downward along the upper limiting rod 307. The upper conical ejector block 3012 can be removed from the upper conical hole 3011, and the workpiece can be pushed out of the upper mold 301, thereby completing demolding. After demolding, when the upper mold core 302 and the lower mold core 202 are closed, the upper connecting spring 3013 is reset, so that the upper conical ejector block 3012 reseals the upper conical hole 3011.

Claims

1. A mold for easy demoulding, comprising a bottom plate (1), characterized in that: The four corners of the top of the bottom plate (1) are fixedly connected to connecting rods (101), the top of the connecting rods (101) is fixedly connected to the top plate (102), the two opposite sides of the top of the bottom plate (1) are fixedly connected to connecting blocks (2), the top of the connecting block (2) is fixedly connected to the lower mold (201), the inside of the top plate (102) is fixedly connected to two electric push rods (103), the bottom of the electric push rods (103) is fixedly connected to the connecting plate (3), and the bottom of the connecting plate (3) is fixedly connected to the upper mold (301); The lower mold (201) is provided with a lower mold core (202), the upper mold (301) is provided with an upper mold core (302), the lower mold (201) is provided with two lower movable grooves (204), the two lower movable grooves (204) are symmetrically arranged in the lower mold (201), the top of the lower movable groove (204) is provided with two shrinkage grooves (206), the top of the shrinkage groove (206) is provided with a lower conical hole (205), the lower mold core (202) is provided with two circular grooves (207) on both sides, and the lower movable groove (204) is slidably connected to the lower movable plate ( 208), the top of the lower movable plate (208) is fixedly connected to two sliding rods (209) and two lower sliding rods (2011), the top of the sliding rod (209) slides through the circular groove (207) and is fixedly connected to the circular plate (2010), the top of the lower sliding rod (2011) slides through the contraction groove (206) and the lower conical hole (205), and is fixedly connected to the lower conical top block (2012), the surface of the lower sliding rod (2011) is covered with a lower connecting spring (2013), and the two ends of the lower connecting spring (2013) are respectively fixedly connected to the top of the inner part of the contraction groove (206) and the top of the lower movable plate (208).

2. A mold for easy demoulding according to claim 1, characterized in that: A plurality of forming grooves (303) are provided on the top end of the upper mold core (302), and friction lines (304) are provided on the inner side surfaces of the forming grooves (303).

3. The mold for easy demoulding according to claim 1, characterized in that: A lower limiting rod (2014) is fixedly connected to the bottom end of the lower movable groove (204), a sliding hole (2015) is provided inside the lower sliding rod (2011), and the lower limiting rod (2014) is located in the sliding hole (2015).

4. The mold for easy demoulding according to claim 1, characterized in that: The upper mold (301) has upper movable grooves (306) at all four corners, and an upper conical hole (3011) is formed at the bottom of the upper movable groove (306). A plurality of upper limit rods (307) are fixedly connected to the interior of the upper movable groove (306), and a slide cylinder (308) is slidably connected to the surface of the upper limit rod (307). The surface of the slide cylinder (308) is fixedly connected to an upper movable plate (309), and the bottom of the upper movable plate (309) is fixedly connected to an upper sliding rod (3010). The bottom end of (3010) slides through the upper conical hole (3011) and is fixedly connected to the upper conical top block (3012). The upper limit rod (307) and the upper sliding rod (3010) are both covered with an upper connecting spring (3013). The two ends of the upper connecting spring (3013) are respectively fixedly connected to the bottom of the upper movable plate (309) and the bottom end of the inner part of the upper movable groove (306). One side of the upper movable plate (309) is located on the side of the upper mold (301) and is fixedly connected to an L-shaped toggle plate (3014).

5. The mold for easy demoulding according to claim 4, characterized in that: Two lower limiting rods (105) are fixedly connected to opposite sides of the top of the bottom plate (1), and the top ends of the lower limiting rods (105) are fixedly connected to lower limiting blocks (106). Two upper limiting rods (107) are fixedly connected to opposite sides of the bottom of the top plate (102), and the bottom ends of the upper limiting rods (107) are fixedly connected to upper limiting blocks (108). The four lower limiting rods (105) are respectively located on the same axis as the four upper limiting rods (107), and the contact end of the L-shaped toggle plate (3014) is located between the lower limiting blocks (106) and the upper limiting blocks (108).

6. The mold for easy demoulding according to claim 5, characterized in that: Two through holes (3015) are provided on opposite sides of the interior of the connecting plate (3), and the upper limiting rod (107) is located in the through holes (3015).

7. The mold for easy demoulding according to claim 2, characterized in that: An annular groove (305) is provided inside the upper mold core (302), the forming groove (303) is provided inside the annular groove (305), an annular block (203) is provided inside the lower mold core (202), the circular groove (207) is provided outside the annular block (203), and the lower tapered hole (205) is located inside the annular block (203).

8. The mold for easy demoulding according to claim 1, characterized in that: A circular hole (104) is provided inside the top plate (102), and the circular hole (104) is located between the two electric push rods (103).

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