A mold structure

Abstract

The present disclosure provides a mold structure, which belongs to the field of mold technology. The mold structure includes a mold body and a demolding device. The mold body includes a runner plate, an upper mold plate, an upper mold core, a middle mold plate, a lower mold plate and a lower mold core. After the injection molded product is formed in the mold body, a demolding device is required to eject the product from the mold body. The upper surface of the lower mold core has a positioning pin, and the lower surface of the plate body of the demolding device has a positioning sleeve. During demolding, the demolding device is placed on the upper surface of the lower mold core, and the positioning sleeve ring is sleeved with the positioning pin, which can play a positioning role for the demolding device to avoid the demolding device from moving in the horizontal direction during the demolding process, and ensure that the demolding protrusion of the demolding device can remain aligned with the injection molded product during the entire demolding process, to ensure that the injection molded product is completely demolded, and to avoid the demolding device from being crushed.

Description

Technical Field

[0001] The present disclosure relates to the field of mold technology, and in particular to a mold structure. Background Art

[0002] The mold structure is an important tool for producing injection molded products. Injection molded products need to be molded and demoulded in the mold structure.

[0003] The mold structure in the related art includes a mold body and a demoulder. After the injection molded product is formed in the mold body, the demoulder is needed to eject the product from the mold body. During injection molding, the metal frame expands due to heat, causing the injection molded product to get stuck in the middle template. During demoulding, the demoulder is placed on the lower template of the mold body, pushing the middle template downward, and at the same time the demoulder is against the injection molded product, so that the rubber product is separated from the middle template.

[0004] However, when the demoulder ejects the product from the mold body, the demoulder and the lower mold plate are prone to slip, which makes it difficult to align the demoulder with the injection molded product, making it difficult to completely demould the injection molded product, and even causing the demoulder to be crushed. Summary of the invention

[0005] The present disclosure provides a mold structure that can solve the technical problems existing in the related art. The technical solution of the mold structure is as follows:

[0006] The present disclosure provides a mold structure, which includes a mold body and a demoulder;

[0007] The mold body comprises a runner plate, an upper mold plate, an upper mold core, a middle mold plate, a lower mold plate and a lower mold core;

[0008] In the injection molding installation state, the runner plate, the upper mold plate, the middle mold plate and the lower mold plate are connected in sequence from top to bottom;

[0009] The upper surface of the flow channel plate is provided with a material inlet hole, and the lower surface of the flow channel plate is provided with a material outlet hole, and the material inlet hole and the material outlet hole are connected inside the flow channel plate;

[0010] The upper mold plate has a first mounting through hole, the first mounting through hole is sleeved around the upper mold core, and the first mounting through hole and the upper mold core are interference fit;

[0011] The lower surface of the upper mold core is provided with an upper mold groove, and a through hole is provided between the upper surface of the upper mold core and the upper mold groove, and the position of the through hole corresponds to the position of the discharge hole;

[0012] The middle die plate has a die hole, and the die hole corresponds to the position of the upper die groove;

[0013] The lower mold plate has a second mounting through hole, the second mounting through hole is sleeved around the lower mold core, and the second mounting through hole is interference fit with the lower mold core;

[0014] The upper surface of the lower mold core is provided with a lower mold groove, the lower mold groove corresponds to the position of the mold hole, and the lower mold core is provided with a positioning pin vertically upward;

[0015] In the demoulding installation state, the demoulding device is located above the lower template and connected to the lower template, and the middle template is located above the demoulding device;

[0016] The demoulding device includes a plate body, a positioning sleeve and a demoulding protrusion. The positioning sleeve is located at a position on the lower surface of the plate body corresponding to the positioning pin and is connected to the plate body. The demoulding protrusion is located at a position on the upper surface of the plate body corresponding to the mold hole and is connected to the plate body.

[0017] In a possible implementation, the mold body further includes a positioning shaft;

[0018] The flow channel plate has a first positioning hole, the upper template has a second positioning hole, the middle template has a third positioning hole, and the lower template has a fourth positioning hole;

[0019] In the injection molding installation state, the positioning shaft is located in the first positioning hole, the second positioning hole, the third positioning hole and the fourth positioning hole, and is respectively connected to the flow channel plate, the upper mold plate, the middle mold plate and the lower mold plate;

[0020] In the demoulding installation state, the positioning shaft is located in the third positioning hole and the fourth positioning hole, and is respectively connected to the middle template and the lower template.

[0021] In a possible implementation, the mold body further includes a telescopic rod;

[0022] The telescopic rod comprises a rod body and a sleeve, wherein the rod body comprises a connected upper rod section and a connected lower rod section, wherein the outer diameter of the upper rod section is greater than the outer diameter of the lower rod section, and the sleeve comprises a connected upper sleeve section and a connected lower sleeve section, wherein the outer diameter of the upper sleeve section is smaller than the outer diameter of the lower sleeve section, and the upper sleeve section is sleeved with the lower rod section;

[0023] The flow channel plate has a first slot, the first slot has a first slot upper section and a first slot lower section, the inner diameter of the first slot upper section is greater than the inner diameter of the first slot lower section, the upper template has a second slot, the second slot has a second slot upper section and a second slot lower section, the inner diameter of the second slot upper section is smaller than the inner diameter of the second slot lower section, the middle template has a third slot, the lower template has a fourth slot, and the outer diameters of the third slot and the fourth slot are both greater than the outer diameter of the sleeve lower section;

[0024] The outer diameter of the upper section of the rod body is larger than the inner diameter of the lower section of the first slot hole, and smaller than or equal to the inner diameter of the upper section of the first slot hole; the inner diameter of the lower section of the rod body is smaller than the inner diameter of the lower section of the first slot hole; the inner diameter of the upper section of the sleeve is smaller than the inner diameter of the upper section of the second slot hole; the inner diameter of the lower section of the sleeve is larger than the inner diameter of the upper section of the second slot hole, and smaller than or equal to the inner diameter of the lower section of the second slot hole;

[0025] In the injection molding installation state, the telescopic rod is located in the first slot hole, the second slot hole, the third slot hole and the fourth slot hole, the upper section of the rod body is connected to the flow channel plate, and there are gaps between the telescopic rod and the second slot hole, the third slot hole and the fourth slot hole respectively;

[0026] In the demoulding installation state, the telescopic rod is located in the first slot hole and the second slot hole, the upper section of the rod body is connected to the flow channel plate, and the lower section of the sleeve is connected to the upper template.

[0027] In a possible implementation, contact damping exists between the inner wall of the upper section of the sleeve and the outer wall of the lower section of the rod body.

[0028] In a possible implementation, the upper template has four first mounting through holes, and the four first mounting through holes are evenly distributed in two rows and two columns;

[0029] The mold structure includes four upper mold cores;

[0030] Each of the first mounting through holes is interference-fitted with one of the upper mold cores.

[0031] In a possible implementation, the lower template has four second mounting through holes, and the four second mounting through holes are evenly distributed in two rows and two columns;

[0032] The mold includes four lower mold cores;

[0033] Each of the second mounting through holes is interference-fitted with one of the lower mold cores.

[0034] In a possible implementation, the middle mold plate has four mold holes, and the four mold holes are evenly distributed in two rows and two columns.

[0035] In a possible implementation, the demoulding device has four demoulding protrusions, and the four demoulding protrusions are evenly distributed in two rows and two columns.

[0036] In a possible implementation, the first mounting through hole is a stepped hole, and a hole diameter of an end of the first mounting through hole close to the flow channel plate is smaller than a hole diameter of an end of the first mounting through hole away from the flow channel plate;

[0037] The side wall of the upper mold core has a stepped structure, and the outer diameter of one end of the upper mold core close to the flow channel plate is smaller than the outer diameter of one end of the upper mold core away from the flow channel plate.

[0038] In a possible implementation, the second mounting through hole is a stepped hole, and the aperture of the second mounting through hole at one end close to the middle template is smaller than the aperture of the second mounting through hole at one end away from the middle template;

[0039] The side wall of the lower mold core has a stepped structure, and the outer diameter of one end of the lower mold core close to the middle mold plate is smaller than the outer diameter of one end away from the middle mold plate.

[0040] The technical solution provided by the present disclosure includes at least the following beneficial effects:

[0041] The present disclosure provides a mold structure, which includes a mold body and a demoulder, wherein the upper surface of the lower mold core of the mold body is provided with a positioning pin, and the lower surface of the plate body of the demoulder is provided with a positioning sleeve. During demoulding, the demoulder is placed on the upper surface of the lower mold core, and the positioning sleeve is placed on the positioning pin to position the demoulder, thereby preventing the demoulder from moving in the horizontal direction during the demoulding process, ensuring that the demoulding protrusion of the demoulder can be aligned with the injection molded product during the entire demoulding process, ensuring that the injection molded product is completely demoulded, and preventing the demoulder from being crushed.

[0042] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the description, are used to explain the principles of the present disclosure. In the drawings:

[0044] Figure 1 is a schematic structural diagram of a mold body in an injection molding installation state shown in an embodiment of the present disclosure;

[0045] Figure 2 is a structural schematic diagram of a mold structure in a demoulding installation state shown in an embodiment of the present disclosure;

[0046] Figure 3is a structural explosion diagram of a mold structure shown in an embodiment of the present disclosure;

[0047] Figure 4 is a structural schematic diagram of a flow channel plate shown in an embodiment of the present disclosure;

[0048] Figure 5 It is a structural schematic diagram of an upper template shown in an embodiment of the present disclosure;

[0049] Figure 6 is a structural schematic diagram of an upper mold core shown in an embodiment of the present disclosure;

[0050] Figure 7 It is a structural schematic diagram of a middle template shown in an embodiment of the present disclosure;

[0051] Figure 8 is a structural schematic diagram of a lower template shown in an embodiment of the present disclosure;

[0052] Fig. 9 is a structural schematic diagram of a lower mold core shown in an embodiment of the present disclosure;

[0053] Fig.10 is a structural schematic diagram of a positioning shaft shown in an embodiment of the present disclosure;

[0054] Fig.11 is a structural schematic diagram of a telescopic rod shown in an embodiment of the present disclosure;

[0055] Fig.12 It is a schematic structural diagram of a demoulding device shown in an embodiment of the present disclosure.

[0056] Legend:

[0057] 1. Mold body, 11. runner plate, 11a. inlet hole, 11b. outlet hole, 11c. first positioning hole, 11d. first slot hole, 11e. first slot hole upper section, 11f. first slot hole lower section, 12. upper template, 12a. first mounting through hole, 12b. second positioning hole, 12c. second slot hole, 12d. second slot hole upper section, 12e. second slot hole lower section, 13. upper mold core, 13a. upper mold groove, 13b. through hole, 14. middle Template, 14a, mold hole, 14b, third positioning hole, 14c, third slot, 15, lower template, 15a, second mounting through hole, 15b, fourth positioning hole, 15c, fourth slot, 16, lower mold core, 16a, lower mold groove, 161, positioning pin, 17, positioning shaft, 18, telescopic rod, 181, rod body, 181a, upper section of rod body, 181b, lower section of rod body, 182, sleeve, 182a, upper section of sleeve, 182b, lower section of sleeve;

[0058] 2. demoulding device, 21. plate body, 22. positioning sleeve, 23. demoulding protrusion;

[0059] 3. Metal frame.

[0060] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0061] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0062] The terms used in the embodiments of the present disclosure are only used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second", "third" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. Words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0063] The embodiment of the present disclosure provides a mold structure, which can be used to produce rubber products, plastic products, etc. The embodiment of the present disclosure takes injection-molded rubber products as an example to illustrate the scheme, and other situations are similar to them, and the embodiment of the present disclosure will not be repeated. The mold structure includes a mold body 1 and a demoulder 2, the mold body 1 is used to complete the molding of the rubber product, and the demoulder 2 is used to complete the demoulding of the rubber product.

[0064] (I) Mold body 1

[0065] like Figure 1-Figure 3 As shown, the mold body 1 includes a flow channel plate 11 , an upper mold plate 12 , an upper mold core 13 , a middle mold plate 14 , a lower mold plate 15 and a lower mold core 16 , and further includes a positioning shaft 17 and a telescopic rod 18 .

[0066] (1) Channel plate 11

[0067] The shape of the flow channel plate 11 can be designed according to the requirements, and can be square, round, hexagonal, etc. The thickness of the flow channel plate 11 can be 50mm. The upper surface of the flow channel plate 11 has an inlet hole 11a, and the lower surface of the flow channel plate 11 has an outlet hole 11b. The inlet hole 11a and the outlet hole 11b are connected inside the flow channel plate 11. The inlet hole 11a can be a larger round hole for connecting the feeding nozzle of the feeding device, such as Figure 3 As shown. The discharge hole 11b can be a large number of small holes distributed at various locations on the lower surface of the flow channel plate 11. Or the discharge hole 11b can also be a special-shaped hole with a larger distribution range. Figure 4 As shown, the special-shaped hole can be specifically composed of seven parts, including four Y-shaped parts, two straight-shaped parts and a circular part. One end of the two Y-shaped parts and one end of the straight-shaped part are connected at the same position, one end of the other two Y-shaped parts and one end of the other straight-shaped part are connected at the same position, and the other ends of the two straight-shaped parts are respectively connected to the circular parts. The connected bifurcations in the two connected Y-shaped parts are collinear, and the straight-shaped parts connected to them are perpendicular to the two bifurcations. The two straight-shaped parts are located on both sides of the circular part and are collinear. The material of the flow channel plate 11 can be metal (such as carbon steel, alloy steel).

[0068] The flow channel plate 11 may also have four first positioning holes 11c, which are evenly distributed in two rows and two columns on the flow channel plate 11. The first positioning holes 11c may be round holes, square holes, triangular holes, etc. The first positioning holes 11c are used in conjunction with the positioning shaft 17 to relative position the flow channel plate 11, the upper template 12, the middle template 14, and the lower template 15.

[0069] like Figure 4 As shown, the flow channel plate 11 may also have four first slots 11d, and the four first slots 11d are distributed on the edge of the flow channel plate 11. The slot of the first slot 11d is located on the side of the flow channel plate 11, and the first slot 11d can be considered as a U-shaped slot on the side of the flow channel plate 11. The first slot 11d has a first slot upper section 11e and a first slot lower section 11f, and the slot width of the first slot upper section 11e is greater than the slot width of the first slot lower section 11f. The slot width of the first slot upper section 11e can be 32.5mm, and the slot width of the first slot lower section 11f can be 18.5mm. The first slot 11d is used in conjunction with the telescopic rod 18 to peel off the flow channel plate 11, the upper template 12 and other components during demolding.

[0070] (2) Upper template 12

[0071] The shape of the upper template 12 can be designed according to the requirements, and can be square, circular, hexagonal, etc. The thickness of the upper template 12 can be 40 mm. Figure 5As shown, the upper template 12 has a first mounting through hole 12a, which can be a round hole, a square hole, a triangular hole, etc. The first mounting through hole 12a surrounds the upper mold core 13, and the first mounting through hole 12a and the upper mold core 13 are interference fit. The material of the upper template 12 can be metal (such as carbon steel, alloy steel).

[0072] The upper mold plate 12 has four first mounting through holes 12a, and the four first mounting through holes 12a are evenly distributed in two rows and two columns. The first mounting through holes 12a are stepped holes, and the aperture of the end of the first mounting through hole 12a close to the flow channel plate 11 is smaller than the aperture of the end away from the flow channel plate 11. The first mounting through holes 12a are arranged in the above-mentioned stepped shape to play a role in axial positioning of the upper mold core 13, so as to prevent the upper surface of the upper mold core 13 from being in a different plane from the upper surface of the upper mold plate 12.

[0073] The upper template 12 may also have four second positioning holes 12b, which are evenly distributed in two rows and two columns on the upper template 12. The second positioning holes 12b may be round holes, square holes, triangular holes, etc. The second positioning holes 12b are used in conjunction with the positioning shaft 17 to relative position the flow channel plate 11, the upper template 12, the middle template 14, and the lower template 15.

[0074] The upper template 12 also has four second slots 12c, which are distributed on the edge of the upper template 12. The slots of the second slots 12c are located on the side of the flow channel plate 11, and the second slots 12c can be considered as U-shaped slots on the side of the upper template 12. The second slot 12c has a second slot upper section 12d and a second slot lower section 12e, and the inner diameter of the second slot upper section 12d is smaller than the inner diameter of the second slot lower section 12e. The slot width of the second slot upper section 12d is the same as the slot width of the first slot lower section 11f, and the slot width of the second slot lower section 12e is greater than the slot width of the first slot upper section 11e. The slot width of the second slot upper section 12d can be 18.5mm, and the slot width of the second slot lower section 12e can be 45mm. The second slot 12c is used in conjunction with the telescopic rod 18 to peel off the flow channel plate 11, the upper template 12 and other components during demoulding.

[0075] (3) Upper mold core 13

[0076] The thickness of the upper mold core 13 is the same as that of the upper mold plate 12, which can be 40 mm. Figure 6 As shown, the lower surface of the upper mold core 13 has an upper mold groove 13a, and a through hole 13b is provided between the upper surface of the upper mold core 13 and the upper mold groove 13a, and the position of the through hole 13b corresponds to the discharge hole 11b. The shape of the upper mold groove 13a can be designed according to the shape requirements of the rubber product, and the material of the upper mold core 13 can be metal (such as carbon steel, alloy steel).

[0077] The side wall of the upper mold core 13 has a stepped structure, and the outer diameter of the end of the upper mold core 13 close to the flow channel plate 11 is smaller than the outer diameter of the end away from the flow channel plate 11. The shape of the side wall of the upper mold core 13 is consistent with the inner wall shape of the first mounting through hole 12a, and the upper mold core 13 and the first mounting through hole 12a are interference fit, which can ensure the axial and circumferential positioning of the upper mold core 13.

[0078] (4) Middle template 14

[0079] The shape of the middle template 14 can be designed according to the requirements, and can be square, circular, hexagonal, etc. The thickness of the middle template 14 can be 57 mm. Figure 7 As shown, the middle template 14 has a mold hole 14a, and the mold hole 14a corresponds to the position of the upper mold groove 13a. The middle template 14 has four mold holes 14a, and the shape of the mold hole 14a can be designed according to the shape requirements of the rubber product. The four mold holes 14a are evenly distributed in two rows and two columns. The inner wall of the mold hole 14a can have a stepped structure, and the inner diameter of the lower section of the mold hole 14a is smaller than the inner diameter of the upper section of the mold hole 14a. Therefore, when producing rubber products, the metal skeleton 3 can be placed on the upper surface of the lower section of the mold hole 14a. The inner wall of the lower section of the mold hole 14a matches the outer wall of the upper mold core 13 and the lower mold core 16. The inner wall of the upper section of the mold hole 14a matches the outer wall of the metal skeleton 3. The material of the middle template 14 can be metal (such as carbon steel, alloy steel).

[0080] The middle template 14 may also have four third positioning holes 14b, which are evenly distributed in two rows and two columns on the middle template 14. The third positioning holes 14b may be round holes, square holes, triangular holes, etc. The second positioning holes 12b are used in conjunction with the positioning shaft 17 to relative position the flow channel plate 11, the upper template 12, the middle template 14, and the lower template 15.

[0081] The middle template 14 may also have four third slots 14c, which are distributed on the edge of the middle template 14. The slots of the third slots 14c are located on the side of the flow channel plate 11, and the third slots 14c can be considered as U-shaped slots on the side of the upper template 12. The slot width of the third slot 14c is the same as the slot width of the lower section 12e of the second slot, and the slot width of the third slot 14c can be 45mm. The third slot 14c is used in conjunction with the telescopic rod 18 to peel off the flow channel plate 11, the upper template 12 and the middle template 14 during demoulding.

[0082] (5) Lower template 15

[0083] The shape of the lower template 15 can be designed according to the requirements, and can be square, circular, hexagonal, etc. The thickness of the lower template 15 can be 30 mm. Figure 8As shown, the lower template 15 has a second mounting through hole 15a, which can be a round hole, a square hole, a triangular hole, etc. The second mounting through hole 15a surrounds the lower mold core 16, and the second mounting through hole 15a and the lower mold core 16 are interference fit. The lower template 15 has four second mounting through holes 15a, which are evenly distributed in two rows and two columns. The material of the lower template 15 can be metal (such as carbon steel, alloy steel).

[0084] The second mounting through hole 15a is a stepped hole, and the hole diameter of the second mounting through hole 15a at one end close to the middle template 14 is smaller than the hole diameter of the end away from the middle template 14. The second mounting through hole 15a is arranged in the above-mentioned stepped shape to play a role in axial positioning of the lower mold core 16, so as to prevent the lower surface of the lower mold core 16 from being in a different plane from the lower surface of the lower template 15.

[0085] The lower template 15 also has a fourth positioning hole 15b, and the four fourth positioning holes 15b are evenly distributed in two rows and two columns on the lower template 15. The side wall of the fourth positioning hole 15b has a stepped structure, and the aperture of the lower end of the fourth positioning hole 15b is larger than the aperture of the upper end of the fourth positioning hole 15b. The aperture of the lower end of the fourth positioning hole 15b can be 28mm, and the aperture of the upper end of the fourth positioning hole 15b can be 25mm. The fourth positioning hole 15b is set to the above-mentioned stepped structure to play an axial positioning role for the positioning shaft 17. The fourth positioning hole 15b can be a round hole, a square hole, a triangular hole, etc. The fourth positioning hole 15b is used in conjunction with the positioning shaft 17 for relative positioning between the flow channel plate 11, the upper template 12, the middle template 14 and the lower template 15.

[0086] The lower template 15 has four fourth slots 15c, which are distributed on the edge of the lower template 15. The slots of the fourth slots 15c are located on the side of the flow channel plate 11, and the fourth slots 15c can be considered as U-shaped slots on the side of the upper template 12. The slot width of the fourth slot 15c is the same as the slot width of the lower section 12e of the second slot and the slot width of the third slot 14c. The slot width of the fourth slot 15c can be 45mm. The fourth slot 15c is used in conjunction with the telescopic rod 18 to peel off the flow channel plate 11, the upper template 12 and the lower template 15 during demoulding.

[0087] (6) Lower mold core 16

[0088] The thickness of the lower mold core 16 is the same as that of the lower mold plate 15, which can be 30 mm. Fig. 9As shown, the upper surface of the lower mold core 16 has a lower mold groove 16a, and the lower mold groove 16a corresponds to the position of the mold hole 14a. The shape of the lower mold groove 16a can be designed according to the shape requirements of the rubber product. The lower mold core 16 has a vertically upward positioning pin 161, and the cross-sectional shape of the positioning pin 161 can be circular, square, triangular, etc. The material of the lower mold core 16 can be metal (such as carbon steel, alloy steel).

[0089] The side wall of the lower mold core 16 has a stepped structure, and the outer diameter of the end of the lower mold core 16 close to the middle mold plate 14 is smaller than the outer diameter of the end away from the middle mold plate 14. The shape of the side wall of the lower mold core 16 is consistent with the inner wall shape of the second mounting through hole 15a, and the lower mold core 16 and the second mounting through hole 15a are interference fit, which can ensure the axial and circumferential positioning of the lower mold core 16.

[0090] (7) Positioning shaft 17

[0091] like Fig.10 As shown, the positioning shaft 17 has a stepped structure, and the height can be 40mm. The shaft diameter of the lower end of the positioning shaft 17 is greater than the shaft diameter of the upper end. The shaft diameter of the upper end of the positioning shaft 17 can be 25mm, and the shaft diameter of the lower end can be 28mm. The lower end of the positioning shaft 17 can be considered as a structure similar to a shoulder, which is used to clamp with other components. The material of the positioning shaft 17 can be metal (such as carbon steel, alloy steel).

[0092] Optionally, the cross-section of the positioning shaft 17 may be in the shape of a circle, a square, a triangle, etc.

[0093] (8) Telescopic rod 18

[0094] The height in the injection molded installation state can be 41mm, and the height in the demoulding installation state can be 60mm. Fig.11As shown, the telescopic rod 18 includes a rod body 181 and a sleeve 182, wherein the rod body 181 includes a connected rod body upper section 181a and a rod body lower section 181b, and the sleeve 182 includes a connected sleeve upper section 182a and a sleeve lower section 182b. The rod body upper section 181a can be considered as a structure similar to a shoulder, which is used to be clamped with other components. Alternatively, the rod body upper section 181a can also have a nut, which is threadedly connected to the upper end of the rod body 181 to form the rod body upper section 181a. The sleeve lower section 182b can be considered as a structure similar to a shoulder, which is used to be clamped with other components. Alternatively, the sleeve lower section 182b can also have a nut, which is threadedly connected to the lower end of the sleeve 182 to form the sleeve lower section 182b. The outer diameter of the rod upper section 181a is greater than the slot width of the first slot lower section 11f and less than or equal to the slot width of the first slot upper section 11e, the outer diameter of the rod lower section 181b is less than the slot width of the first slot lower section 11f, the outer diameter of the sleeve upper section 182a is less than the slot width of the second slot upper section 12d, and the outer diameter of the sleeve lower section 182b is greater than the slot width of the second slot upper section 12d and less than or equal to the slot width of the second slot lower section 12e. The outer diameter of the rod upper section 181a can be 32mm, the outer diameter of the rod lower section 181b can be 18mm, the outer diameter of the sleeve upper section 182a can be 28mm, the inner diameter can be 18mm, and the outer diameter of the sleeve lower section 182b can be 44mm. The material of the telescopic rod 18 can be metal (such as carbon steel, alloy steel).

[0095] The end of the lower section 181b of the rod body may have a flange structure, which may be considered as a structure similar to a shoulder, and is used to engage with the upper section 182a of the sleeve, and the outer diameter of the flange structure is less than or equal to the inner diameter of the upper section 182a of the sleeve. The top of the inner wall of the upper section 182a of the sleeve may have a retaining ring structure, which protrudes toward the center of the circle, and the inner diameter of the retaining ring structure is greater than or equal to the outer diameter of the lower section 181b of the rod body, and is smaller than the outer diameter of the flange structure of the lower section 181b of the rod body, and is used to engage with the lower section 181b of the rod body. The outer diameter of the flange structure of the lower section 181b of the rod body may be 38 mm, and the inner diameter of the retaining ring structure of the upper section 182a of the sleeve may be 32 mm. When the rod lower section 181b extends out from the sleeve upper section 182a and the flange structure of the rod lower section 181b is engaged with the retaining ring structure of the sleeve upper section 182a, the rod lower section 181b no longer extends out, and the rod 181 is considered to be in the limit position.

[0096] Optionally, the cross-section of the telescopic rod 18 may be in the shape of a circle, a square, a triangle, etc.

[0097] There is contact damping between the inner wall of the sleeve upper section 182a and the outer wall of the rod lower section 181b. The contact damping can be provided by a damping sleeve between the rod lower section 181b and the sleeve upper section 182a to avoid slipping between the sleeve upper section 182a and the rod lower section 181b.

[0098] (II) Demolder 2

[0099] like Fig.12 As shown, the demoulding device 2 comprises a plate body 21 , a positioning sleeve 22 and a demoulding protrusion 23 .

[0100] (1)Plate body 21

[0101] The thickness of the plate body 21 can be 8 mm, and the plate body 21 is the carrier of the positioning sleeve 22 and the demoulding protrusion 23. The shape of the plate body 21 can be designed according to the needs, and can be square, round, hexagonal, etc. The plate body 21 can have a handle to facilitate the operator to pick up or place the demoulder 2, and the handle can be considered as a through hole near the edge of the plate body 21. The plate body 21 can have an approximately rectangular shape, and the width of the plate body 21 is less than the spacing between two adjacent positioning shafts 17, so that the demoulder 2 can be placed between the middle template 14 and the lower template 15 without removing the middle template 14 from the positioning shaft 17. The material of the plate body 21 can be metal (such as carbon steel, alloy steel).

[0102] (2) Positioning sleeve 22

[0103] The height of the positioning sleeve 22 can be 10mm, and the aperture of the positioning sleeve 22 is equal to the outer diameter of the positioning pin 161, and the aperture can be 8mm. The material of the positioning sleeve 22 can be metal (such as carbon steel, alloy steel). The number of positioning sleeves 22 is greater than or equal to the number of demoulding protrusions 23, and the lower surface of the plate body 21 corresponding to each demoulding protrusion 23 has at least one positioning sleeve 22. The number of positioning sleeves 22 and positioning pins 161 is the same, and the positioning sleeve 22 is located at the position corresponding to the positioning pin 161 on the lower surface of the plate body 21, and is connected to the plate body 21. The height of the positioning sleeve 22 is less than or equal to the height of the positioning pin 161, because the lower surface of the plate body 21 will contact the upper surface of the lower mold core 16 during demoulding, that is, the lower mold core 16 plays a supporting role for the demoulder 2, so the positioning sleeve 22 only needs to be able to surround a part of the positioning pin 161, and the height of the positioning sleeve 22 can be 26mm. If the height of the positioning sleeve 22 is greater than the height of the positioning pin 161 , the lower mold core 16 cannot support the demolding device 2 during demolding, and only the positioning sleeve 22 supports the plate body 21 , which makes the demolding device 2 easily crushed.

[0104] (3) Demolding protrusion 23

[0105] The demoulder 2 has four demoulding protrusions 23, and the four demoulding protrusions 23 are evenly distributed in two rows and two columns. The shape of the demoulding protrusions 23 can be designed according to the required shape of the rubber product to ensure that the rubber product is evenly stressed during the demoulding process. The height of the demoulding protrusions can be 60mm, and the height of the demoulding protrusions 23 is greater than the thickness of the middle template 14, which can ensure that the rubber product can be completely demoulded from the middle template 14. The demoulding protrusions 23 can be metal (such as carbon steel, alloy steel). The demoulding protrusions 23 are located at a position corresponding to the mold hole 14a on the upper surface of the plate body 21 and are connected to the plate body 21. The first projection area of ​​the demoulding protrusions 23 on the plate body 21 is within the range of the second projection area of ​​the mold hole 14a on the plate body 21. Avoid the demoulding protrusions 23 from contacting the part of the middle template 14 other than the mold hole 14a during the demoulding process to ensure that the demoulding protrusions 23 will not be crushed.

[0106] The mold structure in the embodiment of the present application may include an injection molding installation state and a demolding installation state, and these two installation states are introduced below respectively.

[0107] (I) Injection molding installation state

[0108] like Figure 1 As shown, the flow channel plate 11, the upper mold plate 12, the middle mold plate 14 and the lower mold plate 15 are sequentially connected from top to bottom. The upper mold core 13 is interference fit with the first installation through hole 12a, and the lower mold core 16 is interference fit with the second installation through hole 15a.

[0109] In the case where the mold body 1 has a positioning shaft 17, the positioning shaft 17 is located in the first positioning hole 11c, the second positioning hole 12b, the third positioning hole 14b and the fourth positioning hole 15b, and the lower end of the positioning shaft 17 is stuck in the lower end of the fourth positioning hole 15b to ensure that the positioning shaft 17 will not shake in the axial direction. The positioning shaft 17 is respectively connected to the flow channel plate 11, the upper mold plate 12, the middle mold plate 14, and the lower mold plate 15, so that the flow channel plate 11, the upper mold plate 12, the middle mold plate 14 and the lower mold plate 15 will not move in the horizontal direction during injection molding, so that the upper mold groove 13a can be aligned with the mold hole 14a and the lower mold groove 16a to form a cavity. In addition, the discharge hole 11b of the flow channel plate 11 can also be connected to the through hole 13b of the upper mold core 13 to ensure that the rubber can accurately enter the upper mold groove 13a.

[0110] In the case where the mold body 1 does not have a positioning shaft 17, protrusions and grooves that can be used for positioning can be set on the manifold plate 11, the upper template 12, the middle template 14 and the lower template 15. For example, the protrusion on the lower surface of the manifold plate 11 is snapped into the groove on the upper surface of the upper template 12, so that the positioning between the manifold plate 11 and the upper template 12 can be achieved.

[0111] In the case where the mold body 1 has a telescopic rod 18, the telescopic rod 18 is placed in the first slot 11d, the second slot 12c, the third slot 14c and the fourth slot 15c through the slots of the first slot 11d, the second slot 12c, the third slot 14c and the fourth slot 15c. The upper section 181a of the rod body is connected to the flow channel plate 11, and there are gaps between the telescopic rod 18 and the second slot 12c, the third slot 14c and the fourth slot 15c, respectively. At this time, part of the rod body 181 is located in the sleeve 182. The upper section 181a of the rod body is located in the upper section 11e of the first slot hole, and part of the lower section 181b of the rod body is located in the lower section 11f of the first slot hole. The step surface of the rod body 181 contacts the step surface of the first slot hole 11d, that is, the upper section 181a of the rod body is hung on the step surface of the first slot hole 11d. Part of the rod body lower section 181b and part of the sleeve upper section 182a are located in the second slot upper section 12d. Part of the sleeve upper section 182a is located in the second slot lower section 12e, the third slot and the fourth slot 15c. The sleeve lower section 182b is located in the fourth slot 15c.

[0112] (2) Demolding installation state

[0113] like Figure 2 As shown, the flow channel plate 11 is located above the upper mold plate 12 and the upper mold core 13, the upper mold plate 12 and the upper mold core 13 are located above the middle mold plate 14, the middle mold plate 14 is located above the lower mold plate 15, and the demolding device 2 is located between the middle mold plate 14 and the lower mold plate 15. The demolding device 2 is connected to the lower mold core 16, and the positioning sleeve 22 of the demolding device 2 is encircled by the positioning pin 161 on the lower mold core 16, so that the demolding device 2 is completely fixed on the lower mold plate. In this way, it is ensured that the demolding device 2 does not move in the horizontal direction during demolding, so as to avoid the rubber product from being unable to be completely demolded due to the demolding protrusion 23 being unable to align with the rubber product, and at the same time, it is avoided that the demolding protrusion 23 is damaged due to the part of the middle mold plate 14 other than the mold hole 14a pressing on the demolding protrusion 23.

[0114] In the case where the mold body 1 has a positioning shaft 17, the positioning shaft 17 is located in the third positioning hole 14b and the fourth positioning hole 15b, and is respectively connected to the middle template 14 and the lower template 15. The lower end of the positioning shaft 17 is clamped at the lower end of the fourth positioning hole 15b to prevent the positioning shaft 17 from moving when the flow channel plate 11, the upper template 12, and the middle template 14 are lifted upward. It is ensured that during demoulding, the middle template 14 does not move in the horizontal direction when it is pressed down toward the demoulder 2, and the rubber product is aligned with the demoulding protrusion 23 of the demoulder 2.

[0115] In the case where the mold body 1 has a telescopic rod 18, the telescopic rod 18 is located in the first slot 11d and the second slot 12c, the rod upper section 181a is connected to the flow channel plate 11, and the sleeve lower section 182b is connected to the upper template 12. At this time, the rod body 181 of the telescopic rod 18 extends out of the sleeve 182. The rod upper section 181a is located in the first slot upper section 11e, and part of the rod lower section 181b is located in the first slot lower section 11f. The step surface of the rod 181 contacts the step surface of the first slot 11d, that is, the rod upper section 181a is hung on the step surface of the first slot 11d. Part of the sleeve upper section 182a is located in the second slot upper section 12d, and the sleeve lower section 182b is located in the second slot lower section 12e. The step surface of the sleeve 182 contacts the step surface of the second slot 12c, that is, the lower section 182b of the sleeve is stuck on the step surface of the second slot 12c. Since the outer diameter of the upper section 181a of the rod body is greater than the inner diameter of the lower section 11f of the first slot, and is less than or equal to the inner diameter of the upper section 11e of the first slot, the upper section 181a of the rod body is stuck in the upper section 11e of the first slot. Since the inner diameter of the lower section 182b of the sleeve is greater than the inner diameter of the upper section 12d of the second slot, and is less than or equal to the inner diameter of the lower section 12e of the second slot, the lower section 182b of the sleeve is fixed in the lower section 12e of the second slot. When the flow channel plate 11 is lifted upward by the pulling force, since the upper section 181a of the rod body is hung on the step surface of the first slot 11d, the flow channel plate 11 is lifted and the telescopic rod 18 is driven to move upward as a whole. After the step surface of the sleeve 182 contacts the second slot 12c, the lower section 182b of the sleeve is stuck on the step surface of the second slot 12c, and the flow channel plate 11 is continuously lifted, and at the same time, the rod body 181 is driven to extend out of the sleeve 182, and the sleeve 182 is stuck in the second slot 12c and no longer moves. When the rod body 181 is at the limit position in the sleeve 182, that is, the rod body 181 and the sleeve 182 no longer move relative to each other, the flow channel plate 11 is continuously lifted, and at the same time, the telescopic rod 18 and the upper template 12 are driven to move upward.

[0116] In the case where the mold body 1 does not have the telescopic rod 18 , the flow channel plate 11 and the upper mold plate 12 can be respectively lifted by external hooks.

[0117] The following is an introduction to the mold structure injection and demoulding process:

[0118] Before injection molding, the upper mold core 13 is installed on the upper mold plate 12, and the lower mold core 16 is installed on the lower mold plate 15, and then the metal skeleton 3 of the rubber product is installed in the mold hole 14a of the middle mold plate 14, and the outer wall of the metal skeleton 3 matches the inner wall structure of the upper section of the mold hole 14a. The inner wall of the mold hole 14a has a stepped structure, and the metal skeleton 3 can be placed on the upper surface of the lower end of the mold hole 14a. After the preparation work is completed, the flow channel plate 11, the upper mold plate 12, the middle mold plate 14 and the lower mold plate 15 are connected in sequence through the positioning shaft 17 to complete the mold closing. Then the telescopic rod 18 is placed in the first slot 11d, the second slot 12c, the third slot 14c and the fourth slot 15c from the notches of the first slot 11d, the second slot 12c, the third slot 14c and the fourth slot 15c.

[0119] Then the rubber is injected from the inlet hole 11a of the runner plate 11, and the rubber enters the upper mold groove 13a of the upper mold core 13 from the outlet hole 11b. The upper mold core 13 and the lower mold core 16 are arranged opposite to each other, and the rubber forms a rubber product in the cavity formed by the upper mold core 13 and the lower mold core 16.

[0120] After the injection is completed, cool it for a while. Then, lift the flow plate 11 upward, and at the same time drive the telescopic rod 18 to move upward. After the step surface of the sleeve 182 contacts the second slot 12c, the lower section 182b of the sleeve is stuck in the lower section 12e of the second slot, so the sleeve 182 no longer moves upward. The flow plate 11 continues to be lifted, and at the same time drives the rod body 181 to extend out of the sleeve 182. When the rod body 181 is in the extreme position in the sleeve 182, the lifting of the flow plate 11 is suspended, so that there is sufficient space between the flow plate 11 and the upper template 12, which is convenient for the operator to clean up the waste. After the waste is cleaned, the flow plate 11 continues to be lifted. Since the rod body 181 is in the extreme position in the sleeve 182, the flow plate 11 drives the telescopic rod 18 and the upper template 12 to move upward at the same time, leaving space for the middle template 14 to be lifted upward. Then the middle template 14 is lifted up, and the metal skeleton 3 of the rubber product expands due to heat during the injection molding process, causing the rubber product to be stuck in the mold hole 14a in the middle template 14, that is, the entire molded rubber product is also stuck in the mold hole 14a. Before demolding the rubber product, first place the demolding device 2 above the lower template 15, and then put the positioning sleeve 22 on the positioning pin 161 to ensure that the demolding device 2 will not be misplaced during the demolding process. After the demolding device 2 is completely fixed on the lower template 15, the middle template 14 is pushed downward, and the rubber product in the mold hole 14a moves downward with the middle template 14. After the rubber product contacts the demolding protrusion 23 on the demolding device 2, the rubber product no longer moves, and the middle template 14 continues to move downward until the rubber product is completely separated from the middle template 14.

[0121] The present disclosure provides a mold structure, which includes a mold body and a demoulder, wherein the upper surface of the lower mold core of the mold body is provided with a positioning pin, and the lower surface of the plate body of the demoulder is provided with a positioning sleeve. During demoulding, the demoulder is placed on the upper surface of the lower mold core, and the positioning sleeve is placed on the positioning pin to position the demoulder, thereby preventing the demoulder from moving in the horizontal direction during the demoulding process, ensuring that the demoulding protrusion of the demoulder can be aligned with the injection molded product during the entire demoulding process, ensuring that the injection molded product is completely demoulded, and preventing the demoulder from being crushed.

[0122] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A mold structure, characterized in that: The mold structure comprises a mold body (1) and a demoulder (2); The mold body (1) comprises a flow channel plate (11), an upper mold plate (12), an upper mold core (13), a middle mold plate (14), a lower mold plate (15) and a lower mold core (16); In the injection molding installation state, the runner plate (11), the upper mold plate (12), the middle mold plate (14) and the lower mold plate (15) are connected in sequence from top to bottom, and the demoulder (2) is located outside the mold body (1); The upper surface of the flow channel plate (11) has an inlet hole (11a), and the lower surface of the flow channel plate (11) has an outlet hole (11b), and the inlet hole (11a) and the outlet hole (11b) are connected inside the flow channel plate (11); The upper mold plate (12) has a first mounting through hole (12a), the first mounting through hole (12a) surrounds the upper mold core (13), and the first mounting through hole (12a) and the upper mold core (13) are interference fit; The lower surface of the upper mold core (13) is provided with an upper mold groove (13a), and a through hole (13b) is provided between the upper surface of the upper mold core (13) and the upper mold groove (13a), and the position of the through hole (13b) corresponds to the position of the discharge hole (11b); The middle mold plate (14) has a mold hole (14a), and the mold hole (14a) corresponds to the position of the upper mold groove (13a); The lower mold plate (15) has a second mounting through hole (15a), the second mounting through hole (15a) surrounds the lower mold core (16), and the second mounting through hole (15a) and the lower mold core (16) are interference fit; The upper surface of the lower mold core (16) is provided with a lower mold groove (16a), the lower mold groove (16a) corresponds to the position of the mold hole (14a), and the lower mold core (16) has a positioning pin (161) pointing vertically upward; In the demoulding installation state, the flow channel plate (11), the upper template (12), the middle template (14) and the lower template (15) are arranged in sequence from top to bottom, and the demoulding device (2) is located between the middle template (14) and the lower template (15), and is connected to the lower template (15); The demoulding device (2) comprises a plate body (21), a positioning sleeve (22) and a demoulding protrusion (23); the positioning sleeve (22) is located at a position on the lower surface of the plate body (21) corresponding to the positioning pin (161) and is connected to the plate body (21); the demoulding protrusion (23) is located at a position on the upper surface of the plate body (21) corresponding to the mold hole (14a) and is connected to the plate body (21).

2. A mold structure according to claim 1, characterized in that: The mold body also includes a positioning shaft (17); The flow channel plate (11) has a first positioning hole (11c), the upper template (12) has a second positioning hole (12b), the middle template (14) has a third positioning hole (14b), and the lower template (15) has a fourth positioning hole (15b); In the injection molding installation state, the positioning shaft (17) is located in the first positioning hole (11c), the second positioning hole (12b), the third positioning hole (14b) and the fourth positioning hole (15b), and is respectively connected to the flow channel plate (11), the upper mold plate (12), the middle mold plate (14) and the lower mold plate (15); In the demoulding installation state, the positioning shaft (17) is located in the third positioning hole (14b) and the fourth positioning hole (15b), and is respectively connected to the middle template (14) and the lower template (15).

3. A mold structure according to claim 1, characterized in that: The mold body (1) also includes a telescopic rod (18); The telescopic rod (18) comprises a rod body (181) and a sleeve (182); the rod body (181) comprises a connected rod body upper section (181a) and a rod body lower section (181b); the outer diameter of the rod body upper section (181a) is greater than the outer diameter of the rod body lower section (181b); the sleeve (182) comprises a connected sleeve upper section (182a) and a sleeve lower section (182b); the outer diameter of the sleeve upper section (182a) is smaller than the outer diameter of the sleeve lower section (182b); the sleeve upper section (182a) is sleeved with the rod body lower section (181b); The flow channel plate (11) has a first slot hole (11d), the first slot hole (11d) has a first slot hole upper section (11e) and a first slot hole lower section (11f), the inner diameter of the first slot hole upper section (11e) is greater than the inner diameter of the first slot hole lower section (11f), the upper template (12) has a second slot hole (12c), the second slot hole (12c) has a second slot hole upper section (12d) and a second slot hole lower section (12e), the inner diameter of the second slot hole upper section (12d) is smaller than the inner diameter of the second slot hole lower section (12e), the middle template (14) has a third slot hole (14c), the lower template (15) has a fourth slot hole (15c), the outer diameters of the third slot hole (14c) and the fourth slot hole (15c) are both greater than the outer diameter of the sleeve lower section (182b); The outer diameter of the rod body upper section (181a) is greater than the inner diameter of the first slot hole lower section (11f) and is less than or equal to the inner diameter of the first slot hole upper section (11e); the inner diameter of the rod body lower section (181b) is less than the inner diameter of the first slot hole lower section (11f); the inner diameter of the sleeve upper section (182a) is less than the inner diameter of the second slot hole upper section (12d); the inner diameter of the sleeve lower section (182b) is greater than the inner diameter of the second slot hole upper section (12d) and is less than or equal to the inner diameter of the second slot hole lower section (12e); In the injection molding installation state, the telescopic rod (18) is located in the first slot (11d), the second slot (12c), the third slot (14c) and the fourth slot (15c), the upper section (181a) of the rod body is connected to the flow channel plate (11), and there are gaps between the telescopic rod (18) and the second slot (12c), the third slot (14c) and the fourth slot (15c), respectively; In the demoulding installation state, the telescopic rod (18) is located in the first slot hole (11d) and the second slot hole (12c), the upper section (181a) of the rod body is connected to the flow channel plate (11), and the lower section (182b) of the sleeve is connected to the upper template (12).

4. A mold structure according to claim 3, characterized in that: There is contact damping between the inner wall of the sleeve upper section (182a) and the outer wall of the rod body lower section (181b).

5. A mold structure according to claim 1, characterized in that: The upper template (12) has four first mounting through holes (12a), and the four first mounting through holes (12a) are evenly distributed in two rows and two columns; The mold structure comprises four upper mold cores (13); Each of the first mounting through holes (12a) is respectively interference-fitted with one of the upper mold cores (13).

6. A mold structure according to claim 1, characterized in that: The lower template (15) has four second mounting through holes (15a), and the four second mounting through holes (15a) are evenly distributed in two rows and two columns; The mold includes four lower mold cores (16); Each of the second mounting through holes (15a) is respectively interference-fitted with one of the lower mold cores (16).

7. A mold structure according to claim 1, characterized in that: The middle mold plate (14) has four mold holes (14a), and the four mold holes (14a) are evenly distributed in two rows and two columns.

8. A mold structure according to claim 1, characterized in that: The demoulding device (2) has four demoulding protrusions (23), and the four demoulding protrusions (23) are evenly distributed in two rows and two columns.

9. A mold structure according to any one of claims 1 to 8, characterized in that: The first mounting through hole (12a) is a stepped hole, and the hole diameter of the end of the first mounting through hole (12a) close to the flow channel plate (11) is smaller than the hole diameter of the end away from the flow channel plate (11); The side wall of the upper mold core (13) has a stepped structure, and the outer diameter of one end of the upper mold core (13) close to the flow channel plate (11) is smaller than the outer diameter of the other end away from the flow channel plate (11).

10. A mold structure according to any one of claims 1 to 8, characterized in that: The second mounting through hole (15a) is a stepped hole, and the hole diameter of the second mounting through hole (15a) at one end close to the middle template (14) is smaller than the hole diameter at one end away from the middle template (14); The side wall of the lower mold core (16) has a stepped structure, and the outer diameter of one end of the lower mold core (16) close to the middle mold plate (14) is smaller than the outer diameter of the end away from the middle mold plate (14).

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