A shoe injection molding machine mechanism

Abstract

The utility model discloses a shoe injection molding machine mechanism, belonging to the technical field of injection molding equipment. A shoe injection molding machine mechanism includes a push rod for resisting a shoe last, and the front end of the push rod is detachably provided with a roller; it also includes a sleeve structure for installing and adjusting the front and rear positions of the push rod; the rear end of the sleeve structure is hinged with a mounting seat, and the mounting seat is installed on the turntable mold platform of the injection molding machine; the front end of the push rod is detachably provided with an opening frame, the opening frame is sleeved on the end of the push rod and fastened with a first bolt, and the roller is arranged on the first bolt; the utility model, by arranging the sleeve mechanism and the mounting seat to be hinged, and arranging the roller at the front end of the push rod, when the shoe last is moved up, the instep position of the shoe last cannot directly touch the push rod, but touches the roller, thereby reducing damage to the shoe last, thereby solving the problem in the prior art that the push rod causes certain damage to the shoe last or the upper during the internal injection molding of the shoe.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to an injection molding machine mechanism for shoes. Background Art

[0002] Shoe injection molding machines are generally divided into two parts. One part is the injection molding part, which is used to melt the raw materials and extrude them for injection molding. The other part is the mold table part, which includes a turntable mold table and a mold. The turntable mold table is used to provide a fixed position for the mold. When the turntable mold table drives the mold to rotate to the injection molding station, the injection head performs injection molding at the mold inlet.

[0003] There are generally two types of injection molding methods in the prior art, one is external injection molding, which is performed from the mold position during injection molding, and the other is internal injection molding, that is, an injection channel is set in the shoe last, and the injection is completed from the upper part of the shoe last and then flows out from the bottom of the shoe last.

[0004] During the internal injection molding, since the injection head needs to be pressed against the upper entrance of the shoe last for injection molding, a resisting mechanism needs to be provided above the shoe last to prevent the injection head from pushing the shoe last crooked, causing displacement between the shoe last and the bottom sole mold, resulting in shape change of the sole after injection molding, or injection molding failure. Therefore, in the prior art, a push rod coaxial with the injection head is usually provided to hold the shoe last to prevent displacement of the shoe last.

[0005] However, before the shoe last and the sole mold are moved to the injection molding station, the shoe last needs to be lifted to put on the upper. When lifting the shoe last, if the push rod cannot move flexibly, the push rod will contact the shoe last, and it will also affect the putting on of the upper. Therefore, the push rod will cause certain damage to the surface of the shoe last or the upper, so the push rod needs to be improved. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art that a push rod may cause certain damage to a shoe last or a shoe upper during inner injection molding of a shoe, and proposes a shoe injection molding machine mechanism.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A shoe injection molding machine mechanism comprises a push rod for resisting a shoe last, wherein a roller is detachably provided at the front end of the push rod;

[0009] Also included is a sleeve structure for installing and adjusting the front and rear position of the ejector rod;

[0010] A mounting seat is hinged at the rear end of the sleeve structure, and the mounting seat is mounted on a turntable mold table of an injection molding machine.

[0011] Preferably, an opening frame is detachably provided at the front end of the push rod, the opening frame is sleeved on the end of the push rod and fastened by a first bolt, and the roller is arranged on the first bolt.

[0012] Preferably, the sleeve structure comprises a sleeve, the push rod is inserted into the sleeve, and the sleeve and the push rod are limited by a fastening structure.

[0013] Preferably, the fastening structure comprises a collar and a second bolt, a through groove is formed on the sleeve, the collar is sleeved on the sleeve, the second bolt is threadedly connected to the collar, and a threaded end of the second bolt abuts against the sleeve.

[0014] Preferably, the fastening structure further comprises a nut, a thread is arranged on the annular surface of the push rod, the nut is threadedly connected to the push rod, and the nut is against the front end of the sleeve.

[0015] Preferably, the mounting seat includes a fixing block, the rear end of the sleeve is hinged to the top of the fixing block, and a limiting structure is provided between the sleeve and the fixing block.

[0016] Preferably, a first connecting block is fixedly provided at the rear end of the sleeve, a second connecting block is fixedly provided at the top end of the fixing block, and the sleeve and the fixing block are hingedly connected by inserting a pin into the first connecting block and the second connecting block.

[0017] Preferably, the limiting structure comprises a clamping block and a clamping slot provided in the first connecting block, the clamping block matches the clamping slot, and the clamping block is detachably connected to the top of the fixing block.

[0018] Preferably, the mounting seat also includes a mounting plate and a fixed plate, the rear end of the fixed block is fixed on the mounting plate, the mounting plate is arranged on the fixed plate, the mounting plate can adjust the upper and lower positions on the fixed plate, and the fixed plate is fixedly mounted on the turntable mold platform of the injection molding machine.

[0019] Compared with the prior art, the utility model provides a shoe injection molding machine mechanism having the following beneficial effects.

[0020] 1. The utility model, by setting the sleeve mechanism and the mounting seat to be hinged, and arranging a roller at the front end of the push rod, can ensure that when the shoe last moves up, the instep of the shoe last does not directly hit the push rod, but hits the roller, thereby reducing damage to the shoe last, thereby solving the problem in the prior art that the push rod may cause certain damage to the shoe last or the upper during inner injection molding of the shoe.

[0021] 2. The utility model can adjust the extension length of the push rod by means of the sleeve and the fastening structure, so as to adapt to shoe lasts of different sizes.

[0022] 3. The fastening structure in the utility model is composed of a nut and a collar knot, which can achieve a double limiting effect, making the ejector rod more stable during use.

[0023] 4. The utility model can adjust the upper and lower positions on the fixed plate by setting the mounting plate, and can be used to adjust the height of the push rod, so as to adapt to shoe lasts of different heights, so that the push rod can be pushed at the position where it needs to be pushed.

[0024] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2 It is a schematic diagram of the disassembled structure of the utility model.

[0027] Figure 3 It is a structural schematic diagram of the roller in the utility model.

[0028] Figure 4 It is a schematic diagram of the connection structure of the sleeve and the fixing block in the utility model.

[0029] Figure 5 It is a schematic diagram of the maximum rotation angle of the sleeve on the fixed block in the utility model.

[0030] Figure 6 It is a structural schematic diagram of the sleeve in the utility model.

[0031] Figure 7 It is a schematic diagram of the split structure of the fixed block and the limiting structure in the utility model.

[0032] Figure 8 It is a schematic diagram of the connection structure of the mounting plate and the fixing plate in the utility model.

[0033] In the figure:

[0034] 1. Opening frame; 2. Roller; 3. First bolt; 4. Push rod; 5. Nut; 6. Ring; 7. Second bolt; 8. Sleeve; 9. First connecting block; 10. Fixed block; 11. Limiting plate; 12. Second connecting block; 13. Mounting plate; 14. Mounting groove; 15. Third bolt; 16. Pin shaft; 17. Fixed plate; 18. Through groove; 19. Clamping groove; 20. Clamping block. 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 of the embodiments.

[0036] Reference Figure 1-8 , a shoe injection molding machine mechanism, comprising a push rod 4 for resisting a shoe last, a front end portion of the push rod 4 being detachably provided with a roller 2;

[0037] Also includes a sleeve structure for installing and adjusting the front and rear position of the ejector rod 4;

[0038] The rear end of the sleeve structure is hinged with a mounting seat, and the mounting seat is mounted on a turntable mold table of the injection molding machine.

[0039] In a specific embodiment of the present invention, the push rod 4 is used to support the shoe last, so that the upper part of the shoe last is located between the push rod 4 and the injection molding head. When the injection molding head supports the upper inlet of the shoe last, the push rod 4 supports the shoe last to prevent the shoe last and the sole mold from being displaced. When the push rod 4 is in effect, it is close to the coaxial line with the injection molding head to achieve a better resistance effect. By setting the roller 2, when the shoe last moves up, the push rod 4 does not directly contact the shoe last or the upper on the shoe last, but the roller 2 contacts the shoe last or the upper, thereby avoiding the problem of the push rod 4 causing damage to the shoe last or the upper after contacting the shoe last. If the roller 2 contacts the shoe last or the upper, the roller 2 can roll on the shoe last or the upper without causing large friction, thereby Avoid damage; through the sleeve structure hinged to the mounting seat, the push rod 4 can swing up and down, so that when the shoe last moves up, it can move up with the upper position of the shoe last; when the shoe last moves down, the push rod 4 also moves down under the action of gravity, and then faces the position to be supported by the shoe last. This arrangement can achieve flexible movement of the push rod 4 with a simple structure, thereby saving a driving device for driving the push rod 4 to move, saving costs; the mounting seat is located behind the sole mold on the turntable mold table, and multiple sole molds are arranged on a turntable mold table (the specific number is conventionally set according to actual needs and is not limited here). The number of mounting seats is equal to that of sole molds, and they correspond one to one. Each mounting seat is provided with a sleeve structure and a push rod 4.

[0040] An opening frame 1 is detachably provided at the front end of the push rod 4 . The opening frame 1 is sleeved on the end of the push rod 4 and fastened by a first bolt 3 . The roller 2 is arranged on the first bolt 3 .

[0041] The opening frame 1 is in an inverted U shape and can have a certain deformation. After the opening frame 1 is sleeved on the end of the top rod 4, the first bolt 3 is screwed into the two end columns of the opening position of the opening frame 1. The first bolt 3 is used to make the two end columns of the opening frame 1 deform closer to each other, so that the opening frame 1 can be fixed on the top rod 4; the roller 2 can use a bearing to make its rolling performance better. During installation, when the first bolt 3 only passes through one end column, the roller 2 is sleeved on the first bolt 3, and then the first bolt 3 is screwed into the other end column, so that the roller 2 is located between the two end columns.

[0042] The sleeve structure includes a sleeve 8, and the push rod 4 is inserted in the sleeve 8. The sleeve 8 and the push rod 4 are limited by a fastening structure. When the fastening structure does not play a limiting role, the push rod 4 can slide in the sleeve 8.

[0043] The fastening structure includes a collar 6 and a second bolt 7 . A through groove 18 is provided on a sleeve 8 . The collar 6 is sleeved on the sleeve 8 . The second bolt 7 is threadedly connected to the collar 6 , and the threaded end of the second bolt 7 abuts against the sleeve 8 .

[0044] When limiting the position of the push rod 4, the collar 6 is put on the sleeve 8, and then the second bolt 7 is screwed so that the threaded end of the second bolt 7 enters the interior of the collar 6 and then supports the sleeve 8. Then the second bolt 7 is continued to be screwed. Under the joint action of the collar 6 and the second bolt 7, the diameter of the sleeve 8 can be reduced, that is, with the through groove 18 as the boundary, the two sides of the sleeve 8 are close to each other to clamp the push rod 4, so that the position of the push rod 4 is limited.

[0045] The fastening structure also includes a nut 5, and a thread is arranged on the annular surface of the push rod 4. The nut 5 is threadedly connected to the push rod 4, and the nut 5 is against the front end of the sleeve 8. When the sleeve 8 is pressed by the collar 6 and the second bolt 7 to complete the limit of the push rod 4, the nut 5 is screwed to the front end surface of the sleeve 8, so that the rear end surface of the nut 5 is attached to the front end surface of the sleeve 8. During injection molding, after the push rod 4 is stressed, the push rod 4 can be prevented from retreating due to the existence of the nut 5. In addition, the clamping and limiting of the sleeve 8 can achieve the effect of double limiting the push rod 4. On the one hand, it can make the push rod 4 more stable. On the other hand, the clamping and limiting of the sleeve 8 can share the force of the nut 5 to avoid damage to the thread at this location.

[0046] The mounting seat includes a fixing block 10 , a rear end of the sleeve 8 is hinged to the top of the fixing block 10 , and a limiting structure is provided between the sleeve 8 and the fixing block 10 .

[0047] A first connecting block 9 is fixedly provided at the rear end of the sleeve 8, a second connecting block 12 is fixedly provided at the top end of the fixing block 10, and the sleeve 8 and the fixing block 10 are hingedly connected by inserting a pin 16 into the first connecting block 9 and the second connecting block 12.

[0048] A pin hole is provided on the first connecting block 9, and a pin hole is also provided on the second connecting block 12. Two second connecting blocks 12 are provided, which are respectively located on both sides of the top of the fixed block 10, and the first connecting block 9 is located between the two second connecting blocks 12. The first connecting block 9 and the second connecting block 12 are hinged by inserting a pin shaft 16 into the pin hole, and the spacing between the two second connecting blocks 12 is greater than the width of the first connecting block 9.

[0049] The limiting structure includes a clamping block 20 and a clamping slot 19 provided in the first connecting block 9 . The clamping block 20 matches the clamping slot 19 . The clamping block 20 is detachably connected to the top of the fixing block 10 .

[0050] The top of the fixed block 10 is detachably connected to a limiting plate 11, on which a straight slot is provided, and bolts are inserted into the straight slot and then screwed into the screw holes on the fixed block 10 to fix the limiting plate 11 and the fixed block 10, and this setting can adjust the left and right positions of the limiting plate 11 as needed.

[0051] The block 20 is fixedly arranged at the front end of the limit plate 11, and the block 20 is located in the slot 19 of the first connecting block 9, and is used to limit the left and right position of the first connecting block 9; by changing the left and right position of the limit plate 11, the left and right position of the push rod 4 can be changed synchronously, so as to achieve the effect that the position of the push rod 4 can be adjusted left and right.

[0052] The mounting seat also includes a mounting plate 13 and a fixing plate 17. The rear end of the fixing block 10 is fixed on the mounting plate 13. The mounting plate 13 is arranged on the fixing plate 17. The mounting plate 13 can adjust the upper and lower positions on the fixing plate 17. The fixing plate 17 is fixedly mounted on the turntable mold platform of the injection molding machine.

[0053] The upper and lower parts of the mounting plate 13 are provided with mounting grooves 14. When the mounting plate 13 is fixed to the fixing plate 17, a third bolt 15 is passed through the mounting groove 14 and screwed into the screw hole on the fixing plate 17. After tightening, the installation of the mounting plate 13 is completed. Due to the provided mounting grooves 14, the upper and lower positions of the mounting plate 13 can be adjusted when fixed, and then the upper and lower positions of the push rod 4 can be adjusted.

[0054] Workflow: After the shoe last and the sole mold are set on the turntable mold table, the upper and lower, front and back, left and right positions of the push rod 4 are adjusted according to the position to be supported on the shoe last, so that the push rod 4 just supports the position to be supported on the shoe last when it is in effect. After the preparation work is completed, the operation begins. Before the shoe last follows the turntable mold table to the injection molding station, the shoe last needs to be moved upward to put on the upper and upper. When the shoe last is raised, if the upper position of the shoe last does not directly touch the push rod 4, but touches the roller 2 (to avoid scratching the shoe last), and at the same time, because the sleeve structure is hinged to the mounting seat, the push rod 4 will move upward. The upward swing will not affect the rising of the shoe last, nor will it break the push rod 4. When the shoe upper is put on, the push rod 4 will not affect the operation of putting on the shoe upper. After putting on, the shoe last descends and connects with the sole mold. At the same time, the push rod 4 will also descend under the action of gravity and face the position to be supported again. Then the turntable mold table drives the shoe last and the sole mold to rotate to the injection molding station, and the injection head is placed on the upper inlet of the shoe last for injection molding (in order to avoid material leakage in this process, the force of the injection head on the shoe last cannot be too small). At this time, the push rod 4 takes effect to prevent the shoe last from being displaced under the thrust of the injection molding head, thereby stabilizing the shoe last.

[0055] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shoe injection molding machine mechanism, characterized in that: It comprises a push rod (4) for resisting a shoe last, and a roller (2) is detachably provided at the front end of the push rod (4); Also included is a sleeve structure for installing and adjusting the front and rear position of the ejector rod (4); A mounting seat is hinged at the rear end of the sleeve structure, and the mounting seat is mounted on a turntable mold table of an injection molding machine.

2. A shoe injection molding machine mechanism according to claim 1, characterized in that: An opening frame (1) is detachably provided at the front end of the push rod (4); the opening frame (1) is sleeved on the end of the push rod (4) and fastened by a first bolt (3); and the roller (2) is arranged on the first bolt (3).

3. A shoe injection molding machine mechanism according to claim 1, characterized in that: The sleeve structure comprises a sleeve (8), the push rod (4) is inserted into the sleeve (8), and the sleeve (8) and the push rod (4) are limited in position by a fastening structure.

4. A shoe injection molding machine mechanism according to claim 3, characterized in that: The fastening structure comprises a collar (6) and a second bolt (7); a through groove (18) is provided on the sleeve (8); the collar (6) is sleeved on the sleeve (8); the second bolt (7) is threadedly connected to the collar (6), and a threaded end of the second bolt (7) abuts against the sleeve (8).

5. The shoe injection molding machine mechanism according to claim 3, characterized in that: The fastening structure further comprises a nut (5), a thread is provided on the annular surface of the push rod (4), the nut (5) is threadedly connected to the push rod (4), and the nut (5) rests against the front end of the sleeve (8).

6. A shoe injection molding machine mechanism according to claim 3, characterized in that: The mounting seat comprises a fixing block (10), the rear end of the sleeve (8) is hinged to the top of the fixing block (10), and a limiting structure is provided between the sleeve (8) and the fixing block (10).

7. A shoe injection molding machine mechanism according to claim 6, characterized in that: A first connecting block (9) is fixedly provided at the rear end of the sleeve (8), a second connecting block (12) is fixedly provided at the top end of the fixing block (10), and the sleeve (8) and the fixing block (10) are hingedly connected by inserting a pin shaft (16) into the first connecting block (9) and the second connecting block (12).

8. A shoe injection molding machine mechanism according to claim 7, characterized in that: The limiting structure comprises a clamping block (20) and a clamping slot (19) provided on the first connecting block (9); the clamping block (20) matches the clamping slot (19); and the clamping block (20) is detachably connected to the top of the fixing block (10).

9. The shoe injection molding machine mechanism according to claim 6, characterized in that: The mounting seat further comprises a mounting plate (13) and a fixing plate (17), the rear end of the fixing block (10) being fixed on the mounting plate (13), the mounting plate (13) being arranged on the fixing plate (17), the mounting plate (13) being adjustable in up and down position on the fixing plate (17), and the fixing plate (17) being fixedly mounted on a turntable mold platform of an injection molding machine.

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