Double-color shoe mold and opening and closing device thereof

Abstract

The utility model discloses a double-color shoe mold opening and closing device which comprises a locking plug and a locking base, a locking groove is formed in the first end of the side face of the locking plug, and a locking through hole for the locking plug to be inserted and an installation hole communicated with the locking through hole are formed in the locking base. A locking piece capable of stretching into the locking through hole or moving in the direction away from the locking through hole is installed in the installation hole, and the locking piece and the locking groove are mutually locked and matched. Compared with the prior art, the locking structure is simple and convenient, the stability of the locking structure is ensured through large-area contact and mutual clamping of the locking groove and the locking piece, and it is ensured that the locking plug and the locking base are not prone to loosening. The utility model further provides a double-color shoe mold adopting the opening and closing device.

Description

Technical Field

[0001] The utility model relates to the technical field of shoe molds, and more specifically to a double-color shoe mold and an opener and closer thereof. Background Art

[0002] At present, an EVA two-color molding machine is used to form two colors on a shoe sample. During the first injection molding process, the upper mold and the color barrier plate, as well as the lower mold and the color barrier plate, need to be pressed tightly. At this time, the core is located in the upper cavity of the upper mold. After the molding is completed, the color barrier plate is pulled out, and then the upper mold and the lower mold are molded together. During this process, the core is always located in the upper cavity of the upper mold, and then the core is separated from the upper mold after vulcanization is completed. However, in the actual production process, it is found that when the upper mold and the lower mold are closed together for injection molding, the lock between the upper mold and the lower mold is not tight, and if you are not careful, it is easy to cause the upper mold to shift relative to the lower mold, resulting in poor quality of the finished product.

[0003] In view of this, the applicant conducted in-depth research on this basis, which led to the emergence of this case. Utility Model Content

[0004] The utility model aims to provide a two-color shoe mold opener and closer, which has a simple structure, is easy to assemble and has good structural stability.

[0005] Another object of the utility model is to provide a two-color shoe mold, which can ensure that the upper mold and the lower mold are tightly closed during injection molding, thereby improving the quality of the finished product.

[0006] To achieve the above purpose, the solution of the utility model is:

[0007] A two-color shoe mold opener and closer comprises a locking plug and a locking seat, wherein a locking groove is provided at the first end of a side surface of the locking plug, and the locking seat is provided with a locking through hole for inserting the locking plug and a mounting hole interconnected with the locking through hole, wherein a locking piece capable of extending into the locking through hole or moving in a direction away from the locking through hole is installed in the mounting hole, and the locking piece and the locking groove are mutually locked and matched.

[0008] The locking seat is provided with a fixing hole, which is arranged in a direction away from the locking through hole. The fixing hole, the mounting hole and the locking through hole are connected in sequence. A spring pushing component for driving the locking member to move is installed in the fixing hole.

[0009] The spring pushing assembly comprises a telescopic spring and a fixing piece, wherein the fixing piece is installed in the fixing hole, the telescopic spring is sleeved on the fixing piece, and two ends of the telescopic spring are respectively abutted against the head of the fixing piece and the locking piece.

[0010] The diameter of the mounting hole is larger than the diameter of the fixing hole.

[0011] There are two spring push assemblies, which are arranged side by side. The two spring push assemblies are respectively equipped with the fixing holes, and one end of the telescopic springs of the two spring push assemblies abuts against the locking piece.

[0012] The locking piece is a structure that matches the locking groove.

[0013] Both ends of the locking groove extend to the edges of the locking plug respectively, and the locking groove and the locking piece are arranged side by side.

[0014] A two-color shoe mold comprises an upper mold with an upper cavity, a lower mold with a lower cavity, a middle mold arranged between the upper mold and the lower mold, and the above-mentioned opener and closer, the upper cavity and the middle mold are respectively molded together to form a sealed shoe mold cavity, the upper mold is provided with a sliding block that can slide up and down, there is at least one sliding block, and the two sides of each sliding block are respectively installed with the locking plugs arranged opposite to each other, and the lower mold is respectively installed with the locking seats corresponding to each locking plug.

[0015] Each of the sliding blocks is provided with an installation groove 1 on both sides, the two installation grooves 1 on each sliding block are arranged back to back, and a locking plug is installed in each installation groove 1; the lower mold is provided with an installation groove 2 corresponding to the position of each locking plug, and each locking seat is installed in the corresponding installation groove 2.

[0016] Each of the first mounting grooves is provided with two locking plugs, and the two locking plugs on each of the first mounting grooves are arranged in sequence along the up and down directions, and the two locking plugs on each of the first mounting grooves are arranged back to back, and the upper part of the upper mold is respectively provided with mounting grooves three corresponding to each of the locking plugs, and each of the third mounting grooves is respectively installed with the locking seat.

[0017] After adopting the above structure, the double-color shoe mold opener and closer of the utility model has the following beneficial effects:

[0018] 1. The utility model adopts the plug-in cooperation of the locking plug and the locking seat, combined with the mutual cooperation of the locking groove on the locking plug and the locking piece on the locking seat for fixing. When locking, the locking plug is inserted into the locking through hole of the locking seat, and the locking plug pushes the locking piece to give way, and the locking piece contacts the locking groove so that the locking piece is directly inserted into the locking groove to achieve locking; compared with the prior art, the above-mentioned locking structure is simple and convenient, and the large-area contact and mutual engagement of the locking groove and the locking piece ensure the stability of the locking structure, and ensure that the locking plug and the locking seat are not easy to loosen.

[0019] 2. The utility model adopts a spring pushing assembly, so that when the locking plug is inserted, the locking piece gives way, compresses the telescopic spring, and allows the locking piece to be tightly clamped in the locking groove on the locking plug. When disengaging, the locking plug leaves the locking seat under the action of external force, so that the telescopic spring stretches and the locking piece moves toward the locking through hole. Combined with the limiting structure of the locking piece, it is ensured that the locking piece is not easily offset, and the locking or disengaging is simple and convenient.

[0020] 3. The utility model adopts a locking groove and a locking piece of a cylindrical structure to increase the contact area of ​​the locking structure and achieve surface-to-surface connection to improve the stability of the structure and ensure that it is not easy to loosen when locked.

[0021] After adopting the above structure, the two-color shoe mold of the utility model has the following beneficial effects: when closing the mold, it is ensured that the upper mold and the lower mold are tightly closed through the snap-fit ​​cooperation between the locking seat and the locking piece. Since the locking piece and the locking groove form a surface-to-surface snap-fit, the snap-fit ​​area is increased, and at the same time, the stability of the snap-fit ​​structure is ensured, preventing the upper mold and the lower mold from loosening due to the instability of the locking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the locking seat in the switch of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the locking seat in the switch of the utility model from another angle.

[0024] Figure 3 for Figure 2 Sectional view of AA.

[0025] Figure 4 It is a structural schematic diagram of the locking plug in the switch of the utility model.

[0026] Figure 5 It is a cross-sectional view of the assembly of the locking plug and the locking seat in the switch of the utility model.

[0027] Figure 6 It is a structural schematic diagram of a two-color shoe mold of the utility model.

[0028] In the figure:

[0029] 100-opener body; 1-locking plug; 11-locking groove; 12-first hole; 2-locking seat; 21-locking through hole; 22-mounting hole; 23-fixing hole; 3-locking piece; 41-telescopic spring; 42-fixing piece; 51-upper mold; 52-lower mold; 53-middle mold; 54-mounting plate; 6-sliding block; 7-bolt. DETAILED DESCRIPTION

[0030] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0031] Embodiment 1

[0032] A two-color shoe mold opener and closer, such as Figure 1-5 As shown, it includes an opener body 100, which includes a locking plug 1 and a locking seat 2. A locking groove 11 is provided at the first end of the side surface of the locking plug 1, and the locking groove 11 is arranged along the width direction of the locking plug 1. The locking seat 2 is provided with a locking through hole 21 and a mounting hole 22 that are interconnected. The locking through hole 21 is adapted to the locking plug 1, and a locking member 3 that can extend into the locking through hole 21 or move in a direction away from the locking through hole 21 is installed in the mounting hole 22, and the locking member 3 can be snap-fitted with the locking groove.

[0033] Further, the locking seat 2 is provided with a fixing hole 23, which is arranged in a direction away from the locking through hole 21, that is, the fixing hole 23 is arranged in the width direction of the locking seat 2, the fixing hole 23, the mounting hole 22 and the locking through hole 21 are sequentially connected to each other, a spring push assembly is installed in the fixing hole 23, and the locking member 3 is extended into the locking through hole 21 or returned to the mounting hole 22 through the spring push assembly, and the spring push assembly includes a telescopic spring 41 and a fixing member 42, the telescopic spring 41 is sleeved outside the fixing member 41, the head of the fixing member 42 is fixedly installed in the fixing hole 23, and the two ends of the telescopic spring 41 are respectively abutted against the head of the fixing member 41 and the locking member 3. Preferably, the apertures of the mounting hole 22 and the fixing hole 23 are different, and the aperture of the mounting hole 22 is larger than the aperture of the fixing hole 23, so that the locking member 3 is limited in the fixing hole 23.

[0034] In this embodiment, the above-mentioned fixing member 41 can be a rod-shaped structure with a large head end, such as a bolt, a pin, etc. In this embodiment, the fixing member 42 is taken as an example of a mounting rod. The mounting structure of the fixing member 42 adopts the existing conventional mounting structure. For example, the fixing member 42 is provided with a thread near the large head end so that the fixing member 42 can be installed in the fixing hole 23. In addition, the large head end of the fixing member 42 can also be installed in the fixing hole 23 by using conventional structures such as plug-in or clip-on.

[0035] Preferably, the above-mentioned locking piece 3 is a structure that matches the locking groove 11. In this embodiment, the locking piece 3 is a columnar structure, that is, the locking piece 3 is a card column, and accordingly, the locking groove 11 is an arc groove. The locking groove 11 and the locking piece 3 are arranged side by side. On the one hand, the locking area of ​​the locking piece 3 and the locking groove 11 is maximized when they are engaged, ensuring that the two are not easy to loosen when force is applied in an incorrect disassembly direction, thereby ensuring the stability of the connection between the two. On the other hand, it is convenient for the locking plug 1 to enter or leave the locking groove 11 along the arc portion.

[0036] Preferably, the locking plug 1 is a square block, and a locking groove 11 is provided at the first end of the locking plug 1 corresponding to the mating side surface of the mounting hole 22, and both ends of the locking groove 11 extend to the edge of the locking plug 1 to maximize the contact area with the locking member 3. Preferably, a transition surface is formed between the end portion of the locking plug 1 corresponding to the first end and the groove edge of the locking groove 11, and the transition surface is bent in a direction away from the locking groove 11 and in a direction close to the first end of the locking plug 1, so that the locking plug 1 can move smoothly when entering or leaving the locking groove 11.

[0037] Furthermore, there are at least two sets of the above-mentioned spring pushing assemblies. In this embodiment, two sets of spring pushing assemblies are taken as an example for explanation. The two spring pushing assemblies are arranged side by side, and two mounting holes 22 are respectively provided on the locking seat 2. The two mounting holes 22 and the two spring pushing assemblies are respectively matched one-to-one. The two spring pushing assemblies are installed in the mounting holes 22 in the aforementioned manner, wherein one end of the telescopic springs 42 of the two spring pushing assemblies respectively abuts against the same locking piece 3 so as to jointly pull the locking piece 3 to ensure that the locking piece 3 is offset.

[0038] The present embodiment is a double-shoe mold opener and closer, and the specific assembly process is as follows: the above-mentioned locking plug 1 is inserted into the locking through hole 21 on the locking seat 2. During the insertion process of the locking plug 1, the locking groove 11 on the locking plug 1 contacts the locking piece 3 extending into the locking through hole 21, and causes the locking piece 3 to move in a direction away from the locking through hole 21 to compress the telescopic spring 41. Then, when the locking piece 3 is inserted into the locking groove 11, the external force of inserting the locking plug 1 is withdrawn, and the locking plug 1 can be installed on the locking seat 2.

[0039] The disassembly process is as follows: under the action of external force, the locking plug 1 is pulled upward, so that the locking member 3 gradually disengages from the locking groove 11 . After the disengagement is completed, the locking member 3 is reset under the action of the telescopic spring 42 , that is, the locking member 3 is restored to protrude outside the mounting hole 22 .

[0040] Embodiment 2

[0041] like Figure 1-6As shown, a two-color shoe mold is suitable for a conventional two-color EVA molding machine. The two-color shoe mold here can adopt the two-color shoe mold that has appeared on the market. The conventional two-color shoe mold includes an upper mold 51 with an upper cavity, a lower mold 52 with a lower cavity, a middle mold 53 arranged between the upper mold 51 and the lower mold 52, and a plurality of shutters. Each shutter adopts the structure described in the first embodiment. The upper mold 51 and the middle mold 53 and the lower mold 52 and the middle mold 53 are respectively molded to form a sealed shoe mold cavity. The upper mold 51 is provided with a sliding member that can slide up and down. There is at least one sliding block 6. In this embodiment, two sliding blocks 6 are used as an example for explanation. The two sliding blocks 6 are slidably installed on the upper mold 51 according to the conventional structure, and the two sliding blocks 6 are both in an N shape; the locking plugs 1 of the switch are installed on both sides of the two sliding blocks 6, and the lower mold 52 is respectively installed with locking seats 2 corresponding to each locking plug 1, wherein, in order to ensure that each locking plug 1 is respectively inserted into the corresponding locking seat 2 through the middle mold, the middle mold 53 is respectively provided with through holes corresponding to the positions of each locking plug 1.

[0042] For the convenience of description, the normal use state of the two-color shoe mold is taken as the reference direction of the present utility model.

[0043] Specifically, the two sliding blocks 6 are arranged side by side, and a mounting groove 1 is respectively opened on both sides of each sliding block 6, that is, there are four mounting grooves 1 in total, each mounting groove 1 is arranged outward, and a locking plug 1 is fixedly installed on each mounting groove 1, and the first end of each locking plug 1 is arranged downward, and the mounting structure between the locking plug 1 and the sliding block is that each locking plug 1 is respectively opened with at least two first holes 12. In this embodiment, the example of each locking plug 1 having two first holes 12 is used for explanation, and each mounting groove 1 is respectively opened with a second hole corresponding to the two first holes 12 on the corresponding locking plug 1, and each mutually corresponding first hole 12 and second hole is equipped with a bolt 7, so that the locking plug 1 can be screwed in the mounting groove 1 by the bolt; in addition, the locking plug can also be installed in the mounting groove 1 in other conventional ways, such as snap-on, plug-in, etc. The upper side of the above-mentioned lower mold 52 is respectively provided with mounting grooves 2 corresponding to the positions of each locking plug 1. In this embodiment, there are four mounting grooves 2 in total, and a locking seat 2 is respectively installed in each mounting groove 2. The mounting structure between each locking seat 2 and the corresponding mounting groove 2 is that at least two third holes are opened on the locking seat 2. In this embodiment, two third holes are used as an example for explanation. The two third holes are respectively arranged on both sides of the locking seat 2, and the two third holes are arranged in sequence along the length direction of the locking seat 2. The two third holes are arranged up and down, and fourth holes are respectively opened on the mounting groove 2 at the positions corresponding to the two third holes. Each corresponding third hole and fourth hole is equipped with a bolt 7, so that the locking seat 2 can be screwed in the mounting groove 2 by the bolt 7; in addition, the locking seat can also be installed in the mounting groove 2 in other conventional ways, such as snap-on, plug-in, etc.

[0044] Preferably, each mounting groove is provided with two locking plugs 1, and the two locking plugs 1 on each mounting groove are arranged in sequence along the up-down direction, and the two locking plugs 1 on each mounting groove are arranged back to back, and a mounting plate 54 is provided on the upper mold 51, and the mounting plate 54 is installed together with the upper mold base of the two-color EVA molding machine, and mounting grooves three are respectively opened on the mounting plate 54 corresponding to each locking plug 1, and a locking seat 2 is respectively installed in each mounting groove three; wherein, the mounting structure of the locking seat 2 is the same as that described above, so it is not described in detail.

[0045] The present embodiment is a two-color shoe mold, and its working process is as follows: the upper mold 51 moves downward and closes with the lower mold 52, so that shoe mold cavities are formed between the upper mold 51 and the middle mold 53 and between the lower mold 52 and the middle mold 53, respectively. At this time, each locking plug 1 located on the lower side is respectively inserted into the locking through hole of the corresponding locking seat 2, and the locking groove 11 on each locking plug 1 is respectively engaged with the corresponding locking piece, so that the upper mold 51 and the middle mold 53 and the lower mold 52 and the middle mold 53 are tightly closed together, and then the two shoe mold cavities are injection molded. After the injection molding is completed, the materials in the upper mold 51 and the lower mold 52 are in a semi-fluid state (i.e., not vulcanized), and then the color partition plate of the middle mold 53 is pulled out, and then the upper mold 51 moves downward to continue to be tightly molded with the lower mold 52 for vulcanization, so that the shoe last is always located in the upper mold 513. After the vulcanization is completed, the upper mold seat 11 immediately drives the upper mold 51 to move upward, so that the sliding block 6 moves downward relative to the upper mold 51. At this time, each locking plug 1 on the upper side is separated from the corresponding locking seat 2, so that the shoe last moves downward and separates from the lower mold 523, completing the demolding of the shoe last.

[0046] The above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present utility model shall fall within the scope of the claims of the present utility model.

Claims

1. A two-color shoe mold opener and closer, characterized in that: It includes a locking plug and a locking seat, wherein the first end of the side surface of the locking plug is provided with a locking groove, and the locking seat is provided with a locking through hole for the locking plug to be inserted and a mounting hole interconnected with the locking through hole, and a locking piece that can extend into the locking through hole or move in a direction away from the locking through hole is installed in the mounting hole, and the locking piece and the locking groove are mutually locked and matched.

2. A two-color shoe mold opener and closer according to claim 1, characterized in that: The locking seat is provided with a fixing hole, which is arranged in a direction away from the locking through hole. The fixing hole, the mounting hole and the locking through hole are connected in sequence. A spring pushing component for driving the locking member to move is installed in the fixing hole.

3. A two-color shoe mold opener and closer according to claim 2, characterized in that: The spring pushing assembly comprises a telescopic spring and a fixing piece, wherein the fixing piece is installed in the fixing hole, the telescopic spring is sleeved on the fixing piece, and two ends of the telescopic spring are respectively abutted against the head of the fixing piece and the locking piece.

4. A two-color shoe mold opener and closer according to claim 3, characterized in that: The diameter of the mounting hole is larger than the diameter of the fixing hole.

5. A two-color shoe mold opener and closer according to claim 4, characterized in that: There are two spring push assemblies, which are arranged side by side. The two spring push assemblies are respectively equipped with the fixing holes, and one end of the telescopic springs of the two spring push assemblies abuts against the locking piece.

6. A two-color shoe mold opener and closer according to claim 5, characterized in that: The locking piece is a structure that matches the locking groove.

7. A two-color shoe mold opener and closer according to claim 5, characterized in that: Both ends of the locking groove extend to the edges of the locking plug respectively, and the locking groove and the locking piece are arranged side by side.

8. A two-color shoe mold, characterized by: It includes an upper mold with an upper cavity, a lower mold with a lower cavity, a middle mold arranged between the upper mold and the lower mold, and an opener and closer as described in any one of claims 1 to 7, wherein a sealed shoe mold cavity is formed by combining the upper cavity and the middle mold and the lower cavity and the middle mold, respectively, and a sliding block that can slide up and down is arranged on the upper mold, and there is at least one sliding block, and locking plugs arranged opposite to each other are respectively installed on both sides of each sliding block, and the lower mold is respectively installed with locking seats corresponding to each locking plug.

9. A two-color shoe mold according to claim 8, characterized in that: Each of the sliding blocks is provided with an installation groove 1 on both sides, the two installation grooves 1 on each sliding block are arranged back to back, and a locking plug is installed in each installation groove 1; the lower mold is provided with an installation groove 2 corresponding to the position of each locking plug, and each locking seat is installed in the corresponding installation groove 2.

10. A two-color shoe mold according to claim 9, characterized in that: Each of the first mounting grooves is provided with two locking plugs, and the two locking plugs on each of the first mounting grooves are arranged in sequence along the up and down directions, and the two locking plugs on each of the first mounting grooves are arranged back to back, and the upper part of the upper mold is respectively provided with mounting grooves three corresponding to each of the locking plugs, and each of the third mounting grooves is respectively installed with the locking seat.

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