A processing injection mold

Abstract

The present invention belongs to the field of mold technology, especially a processing injection mold, including an upper mold and a lower mold, a material injection port is provided on the top of the upper mold, a plurality of positioning columns are fixed on the top of the lower mold, a plurality of positioning holes are provided on the upper mold, a center tube is provided on the top of the upper mold, and a syringe includes a syringe, a piston is provided in the syringe, a push rod is fixed on the top of the piston, a disk is provided in the syringe tube at the bottom of the syringe, a plurality of circular holes distributed in a circular array are provided on the disk, a downward shunt pipe is fixed in the circular hole, an atomizing nozzle is fixed at the bottom of the shunt pipe, and a plugging component is provided on the upper mold. In the present invention, a release agent is loaded into the syringe in advance, and then the plugging component is opened, the syringe is inserted into the center tube, and then the push rod is pressed to drive the piston to move downward to press the release agent down, and the release agent presses the disk down on one side, so that the shunt pipe extends into the mold cavity, and another part of the release agent directly enters the shunt pipe through the circular hole and is sprayed into the mold cavity from the atomizing nozzle.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a processing injection mold. Background Art

[0002] Also known as plastic molding processing. It is a general term for various processes that convert synthetic resins or plastics into plastic products. It is a large production department in the plastics industry. Plastic processing generally includes plastic batching, molding, machining, joining, modification and assembly. The last four processes are carried out after the plastic has been molded into finished products or semi-finished products, also known as plastic secondary processing.

[0003] The plastic molding process requires the use of molds. In order to prevent the plastic molds from sticking together, it is generally necessary to spray or apply a release agent into the mold cavity before injection molding. The existing methods are all done manually and are inefficient, so corresponding improvements are made to address this problem. Summary of the invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a processing injection mold.

[0005] The present invention provides a processing injection mold, comprising an upper mold and a lower mold, wherein an injection port is provided on the top of the upper mold, a plurality of positioning posts distributed at the corners are fixed on the top of the lower mold, a plurality of positioning holes for inserting the positioning posts are provided on the upper mold, a central tube is provided on the top of the upper mold, a syringe is inserted in the central tube, the syringe comprises a syringe barrel, a piston is provided in the syringe barrel, a push rod is fixed on the top of the piston, a disc is provided in the syringe tube at the bottom end of the syringe barrel, a plurality of circular holes distributed in a ring array are provided on the disc, a downward shunt pipe is fixed in the circular hole, An atomizing nozzle is fixed at the bottom end of the shunt tube, and a plugging assembly is provided on the upper mold, which is used to plug the center tube from the bottom end of the center tube, align the positioning hole with the positioning column, and then close the upper mold to the lower mold, load the release agent into the injection cylinder in advance, and then open the plugging assembly, insert the injection cylinder into the center tube, and then press the push rod, the push rod drives the piston to move downward, the piston presses the release agent downward, and the release agent presses the disc downward, so that the shunt tube extends into the mold cavity, and the other part of the release agent directly enters the shunt tube through the circular hole and is sprayed into the mold cavity from the atomizing nozzle.

[0006] Preferably, the diverter tube is elastic and is normally bent into an arc shape, so that when the diverter tube moves downward, the part of the diverter tube that moves out of the injection tube will return to an arc shape due to the elasticity, so that the atomizing nozzle can spray the release agent from bottom to top, making the release agent spray more evenly.

[0007] Preferably, the diverter tube is a hose, and a plurality of fixing sleeves distributed in a circular array are fixed to the bottom end of the injection tube, an arc-shaped guide tube is fixed inside the fixing sleeve, the bottom end of the diverter tube is inserted into the guide tube, an opening is provided on the outer arc surface of the guide tube, and the width of the opening is smaller than the diameter of the diverter tube, so that when the diverter tube moves downward, the bottom end of the diverter tube will move along the guide tube, so that the atomizing nozzle can spray the release agent from bottom to top, and the release agent enters the mold cavity from the opening, so that the release agent is sprayed more evenly.

[0008] Preferably, the sealing assembly includes a sealing disk, an embedding groove matching the sealing disk is provided at the bottom of the upper mold, a pair of guide columns symmetrically distributed about the injection barrel are provided through the top of the upper mold, the sealing disk is connected below the guide columns, a ring is sleeved on the center tube, the guide column passes through the ring and is fixedly connected thereto, a handle is fixed on the top of the guide column, a spring is sleeved on the guide column, the two ends of the spring are respectively fixedly connected to the ring and the upper mold, before spraying the release agent, the guide column is pressed downward by the handle, and the guide column will synchronously drive the sealing disk to move downward, so that the center tube is opened, and after spraying the release agent, the handle is released, and under the action of the spring, the sealing disk can be reset to the embedding groove to seal the center tube, so that it will not affect the subsequent mold forming.

[0009] Preferably, the sealing disk is fixed to the bottom ends of the two guide pillars.

[0010] Preferably, the sealing disk is located between two guide pillars, and a pair of rotating shafts are fixed to the circumferential outer wall of the sealing disk, the rotating shafts are rotatably connected to the corresponding guide pillars, and the sealing disk is heavy at the front and light at the back, relative to the sealing disk being directly fixed at the bottom end of the guide pillar. Here, when the guide pillar moves downward, the sealing disk will rotate to an inclined state, thereby reducing the shielding area for the syringe, so that the release agent can be evenly sprayed onto the inner wall of the mold.

[0011] Preferably, a pull rod is fixed to the bottom of the piston, and the bottom end of the pull rod passes through the disc and is fixed with a block. When the piston is pulled upward, the piston can synchronously drive the pull rod to move until the pull rod pulls the block to the bottom of the disc, and then continue to pull the piston to pull the disc upward to reset it. Taking into account that the cavity depth of some molds is shallow, in this case the pull rod can be made of flexible material, so that the pull rod will not hinder the piston from continuing to move downward after extending into the cavity.

[0012] Preferably, a positioning tube with a T-shaped cross-section is inserted into the top end of the injection tube, and a mounting groove is provided on the circumferential outer wall of the positioning tube, and a sealing ring is installed at the mounting groove. The positioning tube with the sealing ring is inserted into the injection tube, and the sealing ring is tightened, so that the positioning tube can be fixed. In this way, the positioning tube can be used to limit the disc from moving upward from the injection tube, and the positioning tube is easy to install.

[0013] Preferably, the circumferential outer wall of the injection barrel is provided with an external thread, and a movable ring is sleeved on the injection barrel to form a threaded connection with the external thread. The movable ring is rotated to an appropriate position and pressed against the top of the center tube when in use. In this way, the initial position of the bottom end of the injection tube extending into the mold cavity can be adjusted to adapt to mold cavities of different depths.

[0014] Preferably, a plurality of rolling balls distributed in a circular array are installed at the bottom of the movable ring, so that the injection cylinder can be rotated while the release agent is injected, and the balls roll on the top of the central tube, so that the release agent can be sprayed over a wider range.

[0015] Compared with the prior art, the present invention provides a processing injection mold, which has the following beneficial effects:

[0016] 1. A processing injection mold, by setting a syringe, aligning the positioning hole with the positioning column, and then closing the upper mold to the lower mold, loading the release agent into the syringe in advance, and then opening the plugging component, inserting the syringe into the center tube, and then pressing the push rod, the push rod drives the piston to move downward, the piston presses the release agent down, and the release agent presses the disc down on one side, so that the shunt tube extends into the mold cavity, and the other part of the release agent directly enters the shunt tube through the circular hole and is sprayed into the mold cavity from the atomizing nozzle.

[0017] 2. A processing injection mold, by providing an elastic shunt tube, and the shunt tube is normally bent into an arc shape, so that when the shunt tube moves downward, the part of the shunt tube that moves out of the injection tube will recover into an arc shape due to elasticity, so that the atomizing nozzle can spray the release agent from bottom to top, so that the release agent can be sprayed more evenly.

[0018] 3. A processing injection mold, by setting a guide tube, when the diverter tube moves downward, the bottom end of the diverter tube will move along the guide tube, so that the atomizing nozzle can spray the release agent from bottom to top, and the release agent enters the mold cavity from the opening, so that the release agent is sprayed more evenly.

[0019] 4. A processing injection mold, by setting a sealing disk, before spraying the release agent, the guide column is pressed downward by the handle, and the guide column will synchronously drive the sealing disk to move downward, so that the center tube is opened. After spraying the release agent, the handle is released, and under the action of the spring, the sealing disk can be reset to the embedded groove to seal the center tube, so as not to affect the subsequent mold forming.

[0020] 5. A processing injection mold, by setting a rotatable sealing disk, which is directly fixed to the bottom end of a guide column relative to the sealing disk. Here, when the guide column moves downward, the sealing disk will rotate to an inclined state, thereby reducing the shielding area for the syringe, so that the release agent can be evenly sprayed onto the inner wall of the mold.

[0021] 6. A processing injection mold, by setting a block, pulling the piston upward, the piston can synchronously drive the pull rod to move until the pull rod pulls the block to the bottom of the disc, and then continue to pull the piston to pull the disc upward to reset it. Considering that the cavity depth of some molds is shallow, in this case the pull rod can be made of flexible material, so that after the pull rod is extended into the cavity, it will not hinder the piston from continuing to move downward.

[0022] 7. A processing injection mold, by setting a movable ring, rotating the movable ring to an appropriate position, and pressing the movable ring to the top of the central tube when in use, so that the initial position of the bottom end of the injection tube extending into the mold cavity can be adjusted to adapt to mold cavities of different depths.

[0023] 8. A processing injection mold is provided with a ball, so that the injection cylinder can be rotated while injecting the release agent, and the ball rolls on the top of the central tube, so that the release agent can be sprayed in a wider range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a processing injection mold proposed by the present invention;

[0025] Figure 2 A schematic diagram of the internal structure of a processing injection mold proposed by the present invention;

[0026] Figure 3 This is a schematic diagram of a syringe installation structure for processing an injection mold proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the installation structure of an atomizing nozzle for processing an injection mold proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of a guide tube installation structure for processing an injection mold proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of the installation structure between the guide tube and the diverter tube of the injection mold processing proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of a sealing ring installation structure for processing an injection mold proposed by the present invention;

[0031] Figure 8 This is a schematic diagram of a sealing disc installation structure for processing an injection mold proposed in Example 2 of the present invention;

[0032] Fig. 9 A schematic diagram of a sealing plate structure for processing an injection mold proposed by the present invention;

[0033] Fig.10The present invention is a schematic diagram of a movable ring installation structure for processing an injection mold.

[0034] In the figure: 1. upper mold; 2. lower mold; 3. injection port; 4. positioning hole; 5. positioning column; 6. center tube; 7. injection cylinder; 8. push rod; 9. piston; 10. disc; 11. diverter pipe; 12. atomizing nozzle; 13. round hole; 14. fixing sleeve; 15. guide tube; 16. opening; 17. pull rod; 18. blocking block; 19. positioning tube; 20. mounting groove; 21. sealing ring; 22. collar; 23. guide column; 24. sealing disk; 25. handle; 26. spring; 27. embedding groove; 28. rotating shaft; 29. ​​external thread; 30. movable ring; 31. ball bearing. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Reference Figure 1-10 A processing injection mold comprises an upper mold 1 and a lower mold 2, wherein an injection port 3 is provided at the top of the upper mold 1, a plurality of positioning posts 5 distributed at the corner positions are fixed at the top of the lower mold 2, a plurality of positioning holes 4 for inserting the positioning posts 5 are provided on the upper mold 1, a central tube 6 is provided at the top of the upper mold 1, a syringe is inserted in the central tube 6, the syringe comprises a syringe barrel 7, a piston 9 is provided in the syringe barrel 7, a push rod 8 is fixed at the top of the piston 9, a disc 10 is provided in the syringe tube at the bottom of the syringe barrel 7, a plurality of circular holes 13 distributed in an annular array are provided on the disc 10, a downward shunt pipe 11 is fixed in the circular hole 13, and the shunt pipe An atomizing nozzle 12 is fixed to the bottom end of 11, and a plugging assembly is provided on the upper mold 1, which is used to plug the center tube 6 from the bottom end of the center tube 6, align the positioning hole 4 with the positioning column 5, and then close the upper mold 1 to the lower mold 2, load the release agent into the injection cylinder 7 in advance, and then open the plugging assembly, insert the injection cylinder 7 into the center tube 6, and then press the push rod 8, the push rod 8 drives the piston 9 to move downward, the piston 9 presses the release agent downward, and the release agent presses the disc 10 downward, so that the shunt tube 11 extends into the mold cavity, and the other part of the release agent directly enters the shunt tube 11 through the circular hole 13, and is sprayed into the mold cavity from the atomizing nozzle 12.

[0038] Among them, the diverter tube 11 is elastic and is normally bent into an arc shape. In this way, when the diverter tube 11 moves downward, the part of the diverter tube 11 that moves out of the injection tube will return to an arc shape due to the elasticity, so that the atomizing nozzle 12 can spray the release agent from bottom to top, thereby making the release agent spray more uniform.

[0039] In another embodiment, the diverter tube 11 is a hose, and a plurality of fixing sleeves 14 distributed in a circular array are fixed to the bottom end of the injection tube, an arc-shaped guide tube 15 is fixed inside the fixing sleeve 14, and the bottom end of the diverter tube 11 is inserted into the guide tube 15, and an opening 16 is provided on the outer arc surface of the guide tube 15, and the width of the opening 16 is smaller than the diameter of the diverter tube 11. In this way, when the diverter tube 11 moves downward, the bottom end of the diverter tube 11 will move along the guide tube 15, so that the atomizing nozzle 12 can spray the release agent from bottom to top, and the release agent enters the mold cavity from the opening 16, so that the release agent is sprayed more evenly.

[0040] Among them, the sealing component includes a sealing disk 24, and an embedding groove 27 that matches the sealing disk 24 is opened at the bottom of the upper mold 1. A pair of guide columns 23 symmetrically distributed about the injection cylinder 7 are arranged through the top of the upper mold 1, and the sealing disk 24 is connected to the bottom of the guide column 23. A ring 22 is sleeved on the center tube 6, and the guide column 23 penetrates the ring 22 and is fixedly connected thereto. A handle 25 is fixed on the top of the guide column 23, and a spring 26 is sleeved on the guide column 23. The two ends of the spring 26 are respectively fixedly connected to the ring 22 and the upper mold 1. Before spraying the release agent, the guide column 23 is pressed downward by the handle 25, and the guide column 23 will synchronously drive the sealing disk 24 to move downward, so that the center tube 6 is opened. After spraying the release agent, the handle 25 is released. Under the action of the spring 26, the sealing disk 24 can be reset to the embedding groove 27 to seal the center tube 6, so as not to affect the subsequent mold forming.

[0041] The closing disk 24 is fixed to the bottom ends of the two guide pillars 23 .

[0042] In another embodiment, the closing disk 24 is located between two guide pillars 23, and a pair of rotating shafts 28 are fixed to the circumferential outer wall of the closing disk 24, the rotating shafts 28 are rotatably connected to the corresponding guide pillars 23, and the closing disk 24 is heavy at the front and light at the back, relative to the closing disk 24 being directly fixed at the bottom end of the guide pillars 23, here when the guide pillars 23 move downward, the closing disk 24 will rotate to an inclined state, thereby reducing the shielding area for the syringe, so that the release agent can be evenly sprayed onto the inner wall of the mold.

[0043] Furthermore, a pull rod 17 is fixed to the bottom of the piston 9, and the bottom end of the pull rod 17 passes through the disc 10 and is fixed with a block 18. When the piston 9 is pulled upward, the piston 9 can synchronously drive the pull rod 17 to move until the pull rod 17 pulls the block 18 to the bottom of the disc 10, and then the piston 9 is continued to be pulled to pull the disc 10 upward to reset it. Taking into account that the cavity depth of some molds is shallow, in this case the pull rod 17 can be made of flexible material, so that the pull rod 17 will not hinder the piston 9 from continuing to move downward after being extended into the cavity.

[0044] Furthermore, a positioning tube 19 with a T-shaped cross-section is inserted into the top end of the injection tube, and a mounting groove 20 is opened on the circumferential outer wall of the positioning tube 19, and a sealing ring 21 is installed at the mounting groove 20. The positioning tube 19 with the sealing ring 21 is inserted into the injection tube, and the sealing ring 21 is tightened, so that the positioning tube 19 can be fixed. In this way, the positioning tube 19 can limit the disc 10 from moving upward from the injection tube, and the positioning tube 19 can be easily installed.

[0045] Furthermore, an external thread 29 is provided on the circumferential outer wall of the injection barrel 7, and a movable ring 30 is sleeved on the injection barrel 7 to form a threaded connection with the external thread 29. The movable ring 30 is rotated to an appropriate position and pressed against the top of the center tube 6 when in use. In this way, the initial position of the bottom end of the injection tube extending into the mold cavity can be adjusted to adapt to mold cavities of different depths.

[0046] Furthermore, a plurality of rolling balls 31 distributed in a circular array are installed at the bottom of the movable ring 30, so that the injection cylinder 7 can be rotated while the mold release agent is injected, and the balls 31 roll on the top of the central tube 6, so that the range of the mold release agent spraying can be wider.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A processing injection mold, comprising an upper mold (1) and a lower mold (2), wherein the upper mold (1) is provided with an injection port (3), the top of the lower mold (2) is fixed with a plurality of positioning posts (5) distributed at the corners, and the upper mold (1) is provided with a plurality of positioning holes (4) for the positioning posts (5) to be inserted, characterized in that: The upper mold (1) is provided with a central tube (6) at the top, a syringe is inserted in the central tube (6), the syringe comprises a syringe barrel (7), a piston (9) is provided in the syringe barrel (7), a push rod (8) is fixed on the top of the piston (9), a disc (10) is provided in the syringe barrel at the bottom end of the syringe barrel (7), a plurality of circular holes (13) arranged in a circular array are provided on the disc (10), a downwardly directed shunt tube (11) is fixed in the circular hole (13), an atomizing nozzle (12) is fixed at the bottom end of the shunt tube (11), and a blocking component is provided on the upper mold (1) for blocking the central tube (6) from the bottom end of the central tube (6); The shunt pipe (11) is elastic, and the shunt pipe (11) is normally bent into an arc shape; The plugging assembly comprises a sealing disk (24), an embedding groove (27) which matches the sealing disk (24) is formed at the bottom of the upper mold (1), a pair of guide columns (23) which are symmetrically distributed about the injection cylinder (7) are penetrated through the top of the upper mold (1), the sealing disk (24) is connected below the guide columns (23), a collar (22) is sleeved on the center tube (6), the guide column (23) penetrates the collar (22) and is fixedly connected thereto, a handle (25) is fixed at the top of the guide column (23), a spring (26) is sleeved on the guide column (23), and the two ends of the spring (26) are respectively fixedly connected to the collar (22) and the upper mold (1).

2. A processing injection mold according to claim 1, characterized in that: The shunt tube (11) is a soft tube, and a plurality of fixing sleeves (14) distributed in a circular array are fixed to the bottom end of the injection tube, an arc-shaped guide tube (15) is fixed inside the fixing sleeve (14), the bottom end of the shunt tube (11) is inserted into the guide tube (15), and an opening (16) is formed on the outer arc surface of the guide tube (15), and the width of the opening (16) is smaller than the diameter of the shunt tube (11).

3. A processing injection mold according to claim 1, characterized in that: The closing disk (24) is fixed to the bottom ends of the two guide pillars (23).

4. A processing injection mold according to claim 1, characterized in that: The closing disk (24) is located between the two guide pillars (23), and a pair of rotating shafts (28) are fixed to the circumferential outer wall of the closing disk (24), the rotating shafts (28) are rotatably connected to the corresponding guide pillars (23), and the closing disk (24) is heavy at the front and light at the back.

5. A processing injection mold according to claim 1, characterized in that: A pull rod (17) is fixed to the bottom of the piston (9), and the bottom end of the pull rod (17) passes through the disc (10) and is fixed with a blocking block (18).

6. A processing injection mold according to claim 5, characterized in that: A positioning tube (19) having a T-shaped cross section is inserted into the top end of the injection tube, a mounting groove (20) is provided on the circumferential outer wall of the positioning tube (19), and a sealing ring (21) is installed at the mounting groove (20).

7. A processing injection mold according to claim 1, characterized in that: The circumferential outer wall of the injection barrel (7) is provided with an external thread (29), and the injection barrel (7) is sleeved with a movable ring (30) which is threadably connected to the external thread (29).

8. A processing injection mold according to claim 7, characterized in that: A plurality of rolling balls (31) distributed in an annular array are installed at the bottom of the movable ring (30).

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