Shoe tree anti-deviation structure for upper-connected injection molding shoe machine

Abstract

The utility model relates to the field of upper-connected shoemaking injection molding equipment, and discloses a shoe tree anti-deviation structure for an upper-connected shoe injection molding machine, which comprises a shoe tree, a shoe tree supporting rod connected to the shoe tree, a transverse abutting block and a vertical pushing assembly for pushing the shoe tree to slide up and down. The shoe last supporting rod moves downwards in a non-interference mode, so that the transverse abutting block abuts against the shoe last supporting rod from one side, and lateral stress of an injection molding head on the shoe last is counteracted when materials are injected into an injection molding opening in the shoe last. The utility model has the following advantages and effects: the offsetting of the lateral stress of the shoe last can be realized only by vertically moving the vertical pushing component downwards to abut against the transverse abutting block, meanwhile, the inclined surface is arranged, the shoe last supporting rod and the transverse abutting block have no friction in the process that the shoe last supporting rod drives the shoe last to ascend and descend, and the shoe last supporting rod ascends to loosen the shoe last supporting rod and the transverse abutting block. When the shoe last supporting rod descends in place, the shoe last supporting rod can abut against the transverse abutting block, and the anti-deviation effect is better.

Description

Technical Field

[0001] The utility model relates to an anti-offset structure for a shoe last in a one-piece injection molding shoe machine, belonging to the technical field of injection molding equipment for one-piece shoe making. Background Art

[0002] In the prior art, a lifting disc type injection molding machine for shoes applicable to internal injection and external injection shoe molds disclosed in Chinese Patent CN216992828U offsets the force on the shoe last by setting the injection ball nozzle, the last injection port and the last injection support assembly on the same horizontal stress surface, so as to achieve the internal injection action that does not damage the shoe last. The specific working mode of the last injection support assembly is driven by the last pressing oil cylinder on the pressing last assembly to drive the last head to perform the last pressing action, and then the support oil cylinder on the last injection support assembly extends until the piston head just contacts the ejector rod in front of the last. It is necessary for the last to move down first and then be supported, and the operation process is relatively cumbersome. Moreover, the overall equipment structure is complex, and the energy consumption during use is high, which is not conducive to saving resources. Content of the Utility Model

[0003] The purpose of the utility model is to provide an anti-offset structure for a shoe last in a one-piece injection molding shoe machine, which has the effects of preventing the shoe last from offsetting and saving resources.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: an anti-offset structure for a shoe last in a one-piece injection molding shoe machine, including a last head, a last head support rod connected to the last head, a transverse abutting block, and a vertical pushing component for pushing the last head to slide up and down. When the vertical pushing component moves the last head down to complete the mold closing with the bottom mold, the last head support rod moves downward without interference, so that the transverse abutting block abuts against the last head support rod from one side to offset the lateral force on the last head by the injection head at the injection port on the last head. The contact surfaces of the transverse abutting block and the last head support rod are both set as inclined surfaces. The inclined surface on the last head support rod faces downward, and the inclined surface on the transverse abutting block faces upward.

[0005] By adopting the above technical solution, when the vertical pushing component pushes the last and the bottom mold to close the mold, the last support rod moves downward synchronously. When the last and the bottom mold are completely closed, the last support rod on the last just fits with the transverse abutting block. After closing the mold, the injection molding machine injects plastic through the injection port on the last. The force of the injection head squeezing the last horizontally during injection molding is offset by the transverse abutting block, preventing the last from shifting, and the injection molding effect is better. In the traditional design, the contact surface is a straight surface. During the process of the last support rod driving the last to lift and lower, the wear between the last support rod and the transverse abutting block is relatively large, and it is very easy to become loose, resulting in insufficient reverse support and easy damage to the last. By replacing the straight contact surface with an inclined surface, during the process of the last support rod driving the last to lift and lower, there is no friction between the last support rod and the transverse abutting block. When the last support rod rises, the two become loose, and when the last support rod descends in place, the last support rod can be tightened against the transverse abutting block, thus better preventing the last from shifting and achieving a better injection molding effect. To offset the lateral force on the last, it only needs to rely on the vertical pushing component to move downward vertically and abut against the transverse abutting block, which makes the operation process more concise, consumes less energy. At the same time, compared with the prior art, there is no need to additionally configure an oil cylinder to drive the transverse abutting block, with low cost and simple structure, thus reducing energy consumption and being conducive to saving resources.

[0006] A further setting of the present utility model is that: the transverse abutting block is slidably installed on the inner wall of the guiding cylinder, the guiding cylinder is fixed on the injection molding shoe machine frame, an anti-rotation structure is provided between the transverse abutting block and the guiding cylinder, and a transverse adjustment component for pushing the transverse abutting block to axially slide on the inner wall of the guiding cylinder is further installed on the injection molding shoe machine frame.

[0007] By adopting the above technical solution, the transverse abutting block axially slides on the inner wall of the guiding cylinder through the guiding block. Using the anti-rotation structure, the transverse abutting block and the guiding cylinder can only axially slide and will not rotate, so that the inclined surface on the transverse abutting block will not shift. After adjusting the horizontal position of the transverse abutting block by using the transverse adjustment component, it can still limit the last support rod from one side. When replacing lasts of different sizes, the transverse abutting block can fit with the last support rod on the last to limit one side of the last.

[0008] A further setting of the present utility model is that: the anti-rotation structure includes an axial chute opened on the inner wall of the guiding cylinder and a guiding block installed on the transverse abutting block and slidably matched with the chute.

[0009] By adopting the above technical solution, the cooperation between the chute and the guiding block enables the transverse abutting block to only axially slide and will not rotate, so that the inclined surface on the transverse abutting block will not shift, and the transverse abutting block can still limit the last support rod from one side after adjusting the horizontal position.

[0010] The utility model is further configured as follows: the lateral adjustment component comprises a fixing plate mounted on the frame of the shoe injection molding machine, a supporting rod mounted on the fixing plate, and an adjusting screw threadedly connected to the fixing plate.

[0011] The utility model is further configured as follows: the adjusting screw rod is rotatably connected to the transverse stop block.

[0012] By adopting the above technical solution, the adjusting screw is rotated so that the adjusting screw rotates forward or reversely on the fixed plate, thereby changing the distance from the adjusting screw to the last support rod, and then changing the distance from the transverse stop block to the last support rod. When replacing lasts of different sizes, the transverse stop block can fit with the last support rod on the last to limit one side of the last.

[0013] The utility model is further configured as follows: the adjusting screw rod is not connected to the transverse stop block, and when the transverse stop block abuts against the last support rod from one side, the transverse stop block fits with the adjusting screw rod.

[0014] By adopting the above technical solution, the adjusting screw is rotated so that the adjusting screw rotates forward or reversely on the fixed plate, thereby changing the distance from the adjusting screw to the last support rod. When the adjusting screw is close to the last support rod, the lateral stop block is squeezed. When the adjusting screw is away from the last support rod, the last support rod squeezes the lateral stop block. The lateral stop block approaches the adjusting screw and is finally stopped by the adjusting screw. When lasts of different sizes are replaced, the lateral stop block can be fitted with the last support rod on the last to limit one side of the last.

[0015] The utility model is further configured as follows: a locking nut is threadedly connected to the adjusting screw rod.

[0016] By adopting the above technical solution, the locking nut can lock and fix the adjusted screw after rotation, thereby fixing the horizontal position of the transverse stop block.

[0017] The utility model is further configured as follows: a hand wheel is installed on the locking nut.

[0018] By adopting the above technical solution, the setting of the handwheel makes it easier to rotate the locking nut and better fix the adjusting screw.

[0019] The beneficial effects of the utility model are:

[0020] 1. When the vertical pushing component pushes the last and the bottom mold to close the mold, the last support rod moves down synchronously. When the last and the bottom mold are closed, the last support rod on the last just fits with the horizontal block. After closing the mold, the injection molding machine performs injection molding through the injection port on the last. The lateral squeezing force of the injection head on the last during injection molding is offset by the horizontal block to prevent the last from shifting and achieve a better injection molding effect.

[0021] 2. To offset the lateral force on the last, it only needs to rely on the vertical pushing component to move downward vertically and abut against the lateral abutting block, which can be achieved. The operation process is more streamlined, with lower energy consumption. At the same time, compared with the existing technology, there is no need to additionally configure an oil cylinder to drive the lateral abutting block, resulting in low cost and simple structure. Furthermore, it reduces energy consumption and is conducive to saving resources.

[0022] 3. By horizontally adjusting the horizontal position of the high-side lateral abutting block of the lateral adjustment component, when replacing lasts of different sizes, the lateral abutting block can fit with the last support rod on the last, limit one side of the last, so as to offset the lateral extrusion force on the last during injection molding, prevent the last from shifting, and achieve a better injection molding effect.

[0023] 4. In the traditional case, the contact surface is set as a straight surface. During the process of the last support rod driving the last to rise and fall, there is significant wear between the last support rod and the lateral abutting block, and it is very easy to become loose, resulting in insufficient reverse support and easy damage to the last. By replacing the straight contact surface with an inclined surface, during the process of the last support rod driving the last to rise and fall, there is no friction between the last support rod and the lateral abutting block. When the last support rod rises, the two become loose, and when the last support rod descends in place, it can abut the last support rod and the lateral abutting block tightly. Furthermore, it can better prevent the last from shifting and achieve a better injection molding effect.

[0024] 5. The lateral abutting block axially slides on the inner wall of the guide cylinder through the guide block. By using the anti-rotation structure, the lateral abutting block and the guide cylinder can only axially slide and will not rotate, so that the inclined surface on the lateral abutting block will not shift. After adjusting the horizontal position of the lateral abutting block with the lateral adjustment component, it can still limit the last support rod from one side. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 is a schematic cross-sectional structural diagram of the connection between the guide cylinder and the lateral abutting block of the present invention.

[0028] In the figure, 1 is a shoe last; 2 is a shoe last lifting plate; 3 is a shoe last support rod; 4 is a lateral abutting block; 5 is a guiding block; 6 is a guiding cylinder; 7 is a supporting rod; 8 is an adjusting screw rod; 9 is a locking nut; 10 is a fixing plate; 11 is a connecting seat; 12 is a clamp; 13 is a hand wheel; 14 is an injection molding shoe machine frame; 15 is an injection molding shoe machine top plate; 16 is a cylinder; 17 is an injection port; 18 is a bottom mold; 19 is an inclined surface. Detailed implementation manners

[0029] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] Please refer to Figure 1-2 , the present utility model provides an anti-offset structure for a shoe last in a combined injection molding shoe machine, including a shoe last 1, a shoe last support rod 3 connected to the shoe last 1, a lateral abutting block 4, and a vertical pushing assembly for pushing the shoe last 1 to slide up and down. When the vertical pushing assembly moves the shoe last 1 downward to complete mold closing with the bottom mold 18, the shoe last support rod 3 moves downward without interference, so that the lateral abutting block 4 abuts against the shoe last support rod 3 from one side to offset the lateral force exerted on the shoe last 1 by the injection head during injection at the injection port 17 of the shoe last 1. The contact surfaces of the lateral abutting block 4 and the shoe last support rod 3 are both provided with inclined surfaces 19. The inclined surface 19 on the shoe last support rod 3 faces downward, and the inclined surface 19 on the lateral abutting block 4 faces upward.

[0031] When the vertical pushing component pushes the last and the bottom mold 18 to close the mold, the last support rod 3 moves downward synchronously. When the last 1 and the bottom mold 18 are completely closed, the last support rod 3 on the last 1 just fits with the transverse abutting block 4. After closing the mold, the injection molding machine injects through the injection port 17 on the last 1. The force of the injection head horizontally extruding the last 1 during injection molding is offset by the transverse abutting block 4, preventing the last 1 from shifting, and the injection molding effect is better. In the traditional design, the contact surface is a straight surface. During the process of the last support rod 3 driving the last 1 to lift and lower, the wear between the last support rod 3 and the transverse abutting block 4 is large, and it is easy to become loose, resulting in insufficient reverse support and easy damage to the last 1. By replacing the straight contact surface with an inclined surface 19, during the process of the last support rod 3 driving the last 1 to lift and lower, there is no friction between the last support rod 3 and the transverse abutting block 4. When the last support rod 3 rises, they become loose, and when the last support rod 3 descends in place, the last support rod 3 can be pressed tightly against the transverse abutting block 4, thereby better preventing the last 1 from shifting and achieving a better injection molding effect. To offset the lateral force on the last 1, it can be achieved simply by the vertical pushing component moving downward vertically and abutting against the transverse abutting block 4. The operation process is more streamlined, the energy consumption is lower. At the same time, compared with the prior art, there is no need to additionally configure an oil cylinder to drive the transverse abutting block 4, the cost is low, and the occupied space is small, thereby reducing the energy consumption and being conducive to saving resources.

[0032] The transverse abutting block 4 is slidably installed on the inner wall of the guiding cylinder 6, the guiding cylinder 6 is fixed on the injection molding shoe machine frame 14, an anti-rotation structure is provided between the transverse abutting block 4 and the guiding cylinder 6, and a transverse adjustment component for pushing the transverse abutting block 4 to axially slide on the inner wall of the guiding cylinder 6 is further installed on the injection molding shoe machine frame 14.

[0033] The transverse abutting block 4 axially slides on the inner wall of the guiding cylinder 6 through the guiding block 5. By using the anti-rotation structure, the transverse abutting block 4 can only axially slide and will not rotate between the transverse abutting block 4 and the guiding cylinder 6, so that the inclined surface 19 on the transverse abutting block 4 will not shift. After adjusting the horizontal position of the transverse abutting block 4 by using the transverse adjustment component, it can still limit the last support rod 3 from one side. When replacing the last 1 of different sizes, the transverse abutting block 4 can fit with the last support rod 3 on the last 1 to limit one side of the last 1.

[0034] The anti-rotation structure includes an axial chute opened on the inner wall of the guiding cylinder 6 and a guiding block 5 installed on the transverse abutting block 4 and slidably matched with the chute. By using the cooperation of the chute and the guiding block 5, the transverse abutting block 4 can only axially slide and will not rotate, so that the inclined surface 19 on the transverse abutting block 4 will not shift, and the transverse abutting block 4 can still limit the last support rod 3 from one side after adjusting the horizontal position.

[0035] Two implementation modes of the transverse adjustment component:

[0036] Embodiment 1: The lateral adjustment component includes a fixed plate 10 installed on the injection molding shoe machine frame 14, a supporting rod 7 installed on the fixed plate 10, and an adjusting screw 8 threadedly connected to the fixed plate 10. The adjusting screw 8 is rotatably connected to the lateral stop block 4. Rotating the adjusting screw 8 causes the adjusting screw 8 to rotate forward or reverse on the fixed plate 10, thereby changing the distance from the adjusting screw 8 to the last support rod 3, and then changing the distance from the lateral stop block 4 to the last support rod 3. When replacing lasts 1 of different sizes, the lateral stop block 4 can fit with the last support rod 3 on the last 1 to limit one side of the last 1.

[0037] The difference between Example 2 and Example 1 is that: the adjusting screw 8 has no connection with the transverse resistance block 4. When the transverse resistance block 4 resists the last support rod 3 from one side, the transverse resistance block 4 fits with the adjusting screw 8. The adjusting screw 8 is rotated to make the adjusting screw 8 rotate forward or reverse on the fixed plate 10, thereby changing the distance from the adjusting screw 8 to the last support rod 3. When the adjusting screw 8 approaches the last support rod 3, the transverse resistance block 4 is squeezed. When the adjusting screw 8 moves away from the last support rod 3, the last support rod 3 squeezes the transverse resistance block 4. The transverse resistance block 4 approaches the adjusting screw 8 and is finally resisted by the adjusting screw 8. When lasts 1 of different sizes are replaced, the transverse resistance block 4 can fit with the last support rod 3 on the last 1 to limit one side of the last 1.

[0038] The adjusting screw rod 8 is threadedly connected with a locking nut 9 , and the locking nut 9 can lock and fix the adjusting screw rod 8 after rotation, thereby fixing the horizontal position of the transverse stop block 4 .

[0039] A hand wheel 13 is mounted on the locking nut 9 , and the setting of the hand wheel 13 facilitates the rotation of the locking nut 9 and better fixes the adjusting screw rod 8 .

[0040] The vertical pushing assembly includes a last lifting plate 2 installed on the last 1 and a cylinder 16 that pushes the last lifting plate 2 up and down. The cylinder 16 is fixed on the top plate 15 of the injection molding shoe machine. When the cylinder 16 is started and pushes the last 1 and the bottom mold 18 to close the mold, the last support rod 3 moves downward synchronously. When the last 1 and the bottom mold 18 are closed, the last support rod 3 on the last 1 is just in contact with the horizontal block 4. After closing the mold, the injection molding machine injects the last 1 and the bottom mold 18 of the sole through the injection port 17 on the last 1.

[0041] A clamp 12 is sleeved on the frame 14 of the shoe injection molding machine. A connecting seat 11 is installed on the clamp 12. The fixing plate 10 is connected to the connecting seat 11. The fixing plate 10 is fixed to the frame 14 of the shoe injection molding machine through the connecting seat 11 and the clamp 12.

Claims

1. A shoe last anti-deviation structure for a shoe last injection molding machine, characterized in that: The invention comprises a last (1), a last support rod (3) connected to the last (1), a transverse stopper (4), and a vertical pushing assembly for pushing the last (1) to slide up and down. When the vertical pushing assembly moves the last (1) downward to complete the mold closing with the bottom mold (18), the last support rod (3) moves downward without interference so that the transverse stopper (4) stops against the last support rod (3) from one side to offset the lateral force exerted on the injection port (17) on the last (1) by the injection head when injecting material. The contact surfaces of the transverse stopper (4) and the last support rod (3) are both set as inclined surfaces (19). The inclined surface (19) on the last support rod (3) faces downward, and the inclined surface (19) on the transverse stopper (4) faces upward.

2. The anti-deviation structure of a shoe last for an injection molding shoe machine according to claim 1, characterized in that: The transverse stop block (4) is slidably mounted on the inner wall of the guide cylinder (6); the guide cylinder (6) is fixed on the frame (14) of the shoe injection molding machine; an anti-rotation structure is provided between the transverse stop block (4) and the guide cylinder (6); and a transverse adjustment component is also installed on the frame (14) of the shoe injection molding machine for pushing the transverse stop block (4) to slide axially on the inner wall of the guide cylinder (6).

3. The anti-deviating structure of the shoe last for the upper injection molding shoe machine according to claim 2, characterized in that: The anti-rotation structure comprises an axial sliding groove formed on the inner wall of the guide cylinder (6) and a guide block (5) mounted on the transverse stop block (4) and slidably engaged with the sliding groove.

4. The anti-deviating structure of the shoe last for the upper injection molding shoe machine according to claim 3, characterized in that: The lateral adjustment assembly comprises a fixing plate (10) mounted on the frame (14) of the shoe injection molding machine, a supporting rod (7) mounted on the fixing plate (10), and an adjusting screw rod (8) threadedly connected to the fixing plate (10).

5. The anti-deviating structure of the shoe last for the upper injection molding shoe machine according to claim 4, characterized in that: The adjusting screw rod (8) is rotatably connected to the transverse stop block (4).

6. The anti-deviating structure of the shoe last for the upper injection molding shoe machine according to claim 4, characterized in that: The adjusting screw rod (8) has no connection with the transverse stop block (4); when the transverse stop block (4) abuts against the shoe last support rod (3) from one side, the transverse stop block (4) fits the adjusting screw rod (8).

7. The anti-deviation structure of the shoe last for the upper injection molding shoe machine according to claim 5 or 6, characterized in that: A locking nut (9) is threadedly connected to the adjusting screw rod (8).

8. The anti-deviating structure of the shoe last for the upper injection molding shoe machine according to claim 7, characterized in that: A hand wheel (13) is mounted on the locking nut (9).

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