Side core-pulling mechanism and mold

Abstract

The utility model discloses a side core-pulling mechanism and a mold, comprising a core-pulling insert, one end of which is in contact with a product workpiece; the sliding block seat is assembled with one end, deviating from the product workpiece, of the core-pulling insert; the insert fixing base plate is located on the face, facing the core-pulling insert, of the sliding block base. The equal-height screw sequentially comprises an external thread section, a cylindrical section and an expansion head section in the single direction along the axis, the cylindrical section movably penetrates through the insert fixing base plate, the axial length of the cylindrical section is larger than the thickness of the insert fixing base plate, and the external thread section is fixed to the sliding block base; and the pressure spring is parallel to the equal-height screw, and one end of the pressure spring is in contact with the sliding block seat. By utilizing the characteristics of the equal-height screw and the pressure spring, a simple mechanism is used for replacing sequential control actions of an air cylinder and an oil cylinder, and the requirement of a product for firstly pulling a core is met. And the space of a mold and a machine table is saved.

Description

Technical Field

[0001] The utility model relates to the field of mold core pulling mechanisms, in particular to a side core pulling mechanism and a mold. Background Art

[0002] The mold products have various shapes, such as Figures 1 to 3 As shown in the product workpiece 1, the demoulding direction of the deep cavity on the side of the product workpiece 1 is inconsistent with the mold opening direction, such as Figure 3 As shown, the product workpiece 1 has two cavities that are obviously perpendicular to each other, so the demoulding direction and the mold opening direction are inconsistent. Figure 3 The X and Z directions are shown. In this case, the slider demoulding is required. The deep cavity has a strong clamping force. If the inner and outer sliders are demoulded together, the product workpiece 1 may be damaged, so the deep cavity needs to be cored first.

[0003] The conventional method is to use conventional air cylinders and oil cylinders to pull the core, but this method takes up a lot of space, the mold and the machine may need to be enlarged, and the operation is more complicated and requires setting the timing on the machine. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a side core pulling mechanism and a mold, which utilizes the characteristics of equal height screws and compression springs, and uses a simple mechanism to replace the timing control action of the air cylinder and the oil cylinder, thereby meeting the need for core pulling of the product and saving space for the mold and the machine.

[0005] In order to solve the above problems, the utility model provides a side core pulling mechanism and a mold. In order to achieve the above purpose, the technical solution adopted by the utility model to solve its technical problems is:

[0006] A side core-pulling mechanism comprises: a core-pulling insert, one end of which contacts with a product workpiece; a slider seat, assembled with the end of the core-pulling insert away from the product workpiece; an insert fixing pad, located on the side of the slider seat facing the core-pulling insert; a contour screw, which comprises an external thread section, a cylindrical section, and an enlarged head section in sequence along an axis, the cylindrical section movably passes through the insert fixing pad, the axial length of the cylindrical section is greater than the thickness of the insert fixing pad, and the external thread section is fixed to the slider seat; a compression spring, arranged in parallel with the contour screw, one end of which contacts with the slider seat.

[0007] The beneficial effects of adopting the above technical solution are: using the characteristics of equal height screws and compression springs, a simple mechanism replaces the timing control action of the cylinder and the oil cylinder, which meets the needs of the product to pull the core first, and can be widely promoted and used. The equal height screws control the travel distance and the limit position, and the compression spring provides elastic force in one direction along the axis. The advantages are simple, practical and effective mechanism. It also saves space for molds and machines.

[0008] As a further improvement of the present utility model, a slider insert fixing plate is further provided on the side of the insert fixing backing plate facing away from the slider seat. The slider insert fixing plate is provided with a first through hole, and the bulged head section is movably assembled with the first through hole; the insert fixing backing plate and the slider insert fixing plate are relatively fixed.

[0009] As a further improvement of the present utility model, the insert fixing backing plate is provided with a second through hole and a third through hole, and the slider seat is provided with a blind hole and an internal threaded hole; the first through hole, the third through hole and the internal threaded hole are coaxial with each other; the second through hole and the blind hole are coaxial with each other.

[0010] As a further improvement of the present utility model, the axial length of the first through hole is greater than the axial length of the bulged head section, and the inner diameter of the first through hole is not less than the outer diameter of the bulged head section; the inner diameter of the first through hole is greater than the inner diameter of the third through hole, the outer diameter of the bulged head section is greater than the inner diameter of the third through hole, and the inner diameter of the third through hole is not less than the outer diameter of the cylindrical section; the external threaded section is threadedly assembled with the internal threaded hole.

[0011] The beneficial effect of adopting the above technical solution is that: the first through hole and the third through hole are equivalent to forming a stepped hole in combination, which helps to straight-line guide and limit the equal-height screw.

[0012] As a further improvement of the present utility model, one end of the compression spring contacts with the slider insert fixing plate, and the compression spring is located in the second through hole and the blind hole; the axial length of the compression spring in the uncompressed state is greater than the sum of the axial lengths of the second through hole and the blind hole respectively.

[0013] As a further improvement of the present utility model, the insert fixing backing plate and the slider insert fixing plate are fixedly connected to each other by a plurality of assembly screws.

[0014] The beneficial effect of adopting the above technical solution is that: the functions of the assembly screws and the equal-height screws are different. The assembly screws play a role in relatively fixing two parts firmly.

[0015] As a further improvement of the present utility model, a diagonal guide post is movably assembled on the slider seat, and the length direction of the diagonal guide post forms a non-right angle with the length direction of the core-pulling insert; a lifter base is provided on one side of the slider seat, and a wear-resistant block is provided on the surface of the lifter base facing the slider seat, and the surface of the wear-resistant block is parallel to the length direction of the diagonal guide post.

[0016] The beneficial effect of adopting the above technical solution is that: the working principle of the mechanism is that when the mold is opened, the lifter base leaves the slider seat, the force of the compression spring is released, the core-pulling insert and the slider seat withdraw backward together, gradually separating from the plastic position, achieving the core-pulling effect. The slider seat continues to withdraw backward, that is, the core-pulling action ends. The shoulder of the equal-height screw contacts the backing plate, driving the backing plate and the outer slider insert to withdraw backward together, maintaining this state until completely leaving the plastic position, which is convenient for the subsequent product ejection action of the mold.

[0017] As a further improvement of the present utility model, an outer slider insert is sleeved outside the core-pulling insert, and the core-pulling insert and the outer slider insert respectively clamp the product workpiece from the inside and outside.

[0018] As a further improvement of the present utility model, one end of the core-pulling insert facing the slider seat has a radially extending cam edge, and the cam edge is clamped and assembled with the slider seat.

[0019] The beneficial effect of adopting the above technical solution is: to ensure fixed connection.

[0020] The mold includes the side core-pulling mechanism mentioned above. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a perspective view of an embodiment of the product workpiece of the present utility model;

[0023] Figure 2 It is a top view of an embodiment of the product workpiece of the present utility model;

[0024] Figure 3 It is an A-A cross-sectional view of an embodiment of the product workpiece of the present utility model;

[0025] Figure 4 It is an application schematic diagram of an embodiment of the side core-pulling mechanism of the present utility model;

[0026] Figure 5 It is a B-B cross-sectional view of an embodiment of the side core-pulling mechanism of the present utility model;

[0027] Figure 6 It is an application schematic diagram of an embodiment of the side core-pulling mechanism of the present utility model;

[0028] Figure 7 It is a C-C cross-sectional view of an embodiment of the side core-pulling mechanism of the present utility model;

[0029] Figure 8 It is an application schematic diagram of an embodiment of the side core-pulling mechanism of the present utility model;

[0030] Figure 9 It is a D-D cross-sectional view of an embodiment of the side core-pulling mechanism of the present utility model;

[0031] Figure 10 This is an application schematic diagram of an implementation mode of the side core pulling mechanism of the utility model;

[0032] Figure 11 It is an EE sectional view of an implementation manner of the side core pulling mechanism of the utility model.

[0033] 1-product workpiece; 2-core-pulling insert; 21-cam edge; 3-external slider insert; 4-slider insert fixing plate; 41-first through hole; 5-insert fixing pad; 51-second through hole; 52-third through hole; 6-core-pulling insert pressure block; 7-inclined guide column; 8-wear-resistant block; 9-shovel base; 10-equal height screws; 101-external thread section; 102-cylindrical section; 103-enlarged head section; 11-compression spring; 12-assembly screw; 13-slider seat; 131-blind hole; 132-internal thread hole; L1-core-pulling stroke; L2-gap for core-pulling insert to be out of glue position. DETAILED DESCRIPTION

[0034] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0035] In order to achieve the purpose of the utility model, a side core pulling mechanism includes: a core pulling insert 2, one end of which is in contact with the product workpiece 1; a slider seat 13, assembled with the end of the core pulling insert 2 away from the product workpiece 1; an insert fixing pad 5, located on the side of the slider seat 13 facing the core pulling insert 2; a contour screw 10, which includes an external thread section 101, a cylindrical section 102, and an enlarged head section 103 in sequence along the axis, the cylindrical section 102 moves through the insert fixing pad 5, the axial length of the cylindrical section 102 is greater than the thickness of the insert fixing pad 5, and the external thread section 101 is fixed to the slider seat 13; a compression spring 11, arranged parallel to the contour screw 10, and one end of the compression spring 11 is in contact with the slider seat 13.

[0036] The enlarged head section 103 plays a role of limiting position due to its large radial dimension. The cylindrical section 102 plays a role of linear guidance similar to an optical axis due to its smooth surface. The external thread section 101 plays a role of fixing thread equivalent to screws and bolts.

[0037] The beneficial effects of adopting the above technical solution are: using the characteristics of equal height screws and compression springs, a simple mechanism replaces the timing control action of the cylinder and the oil cylinder, which meets the needs of the product to pull the core first, and can be widely promoted and used. The equal height screws control the travel distance and the limit position, and the compression spring provides elastic force in one direction along the axis. The advantages are simple, practical and effective mechanism. It also saves space for molds and machines.

[0038] In some other embodiments of the present utility model, a slider insert fixing plate 4 is further provided on the side of the insert fixing backing plate 5 facing away from the slider seat 13. The slider insert fixing plate 4 is provided with a first through hole 41, and the enlarged head section 103 is movably assembled with the first through hole 41; the insert fixing backing plate 5 and the slider insert fixing plate 4 are relatively fixed.

[0039] In some other embodiments of the present utility model, the insert fixing backing plate 5 is provided with a second through hole 51 and a third through hole 52, and the slider seat 13 is provided with a blind hole 131 and an internal threaded hole 132; the first through hole 41, the third through hole 52, and the internal threaded hole 132 are coaxial with each other; the second through hole 51 and the blind hole 131 are coaxial with each other.

[0040] In some other embodiments of the present utility model, the axial length of the first through hole 41 is greater than the axial length of the enlarged head section 103, and the inner diameter of the first through hole 41 is not less than the outer diameter of the enlarged head section 103; the inner diameter of the first through hole 41 is greater than the inner diameter of the third through hole 52, the outer diameter of the enlarged head section 103 is greater than the inner diameter of the third through hole 52, and the inner diameter of the third through hole 52 is not less than the outer diameter of the cylindrical section 102; the external threaded section 101 is threadedly assembled with the internal threaded hole 132.

[0041] The beneficial effect of adopting the above technical solution is that the first through hole and the third through hole are equivalent to a combined stepped hole, which helps to linearly guide and limit the equal-height screw.

[0042] In some other embodiments of the present utility model, one end of the compression spring 11 contacts the slider insert fixing plate 4, and the compression spring 11 is located in the second through hole 51 and the blind hole 131; the axial length of the compression spring 11 in the uncompressed state is greater than the sum of the axial lengths of the second through hole 51 and the blind hole 131 respectively.

[0043] As Figure 11 the compression spring 11 is in a popped state.

[0044] In some other embodiments of the present utility model, the insert fixing backing plate 5 and the slider insert fixing plate 4 are fixed to each other by a plurality of assembly screws 12.

[0045] The beneficial effect of adopting the above technical solution is that the function of the assembly screw is different from that of the equal-height screw. The assembly screw serves to relatively fix two parts firmly.

[0046] As Figure 9 shown, in some other embodiments of the present utility model, a cam pin 7 is movably assembled on the slider seat 13. The length direction of the cam pin 7 forms a non-right angle with the length direction of the core-pulling insert 2; a lifter block 9 is provided on one side of the slider seat 13, and a wear-resistant block 8 is provided on the surface of the lifter block 9 facing the slider seat 13. The surface of the wear-resistant block 8 is parallel to the length direction of the cam pin 7.

[0047] The beneficial effects of adopting the above technical solution are as follows: The working principle of the mechanism is that when the mold is opened, the shovel base leaves the slider seat, the force of the compression spring is released, and the core-pulling insert and the slider seat withdraw backward together, gradually disengaging from the plastic position to achieve the core-pulling effect. The slider seat continues to withdraw backward, that is, the core-pulling action ends. The shoulder of the equal-height screw contacts the backing plate, driving the backing plate and the outer slider insert to withdraw backward together, maintaining this state until completely leaving the plastic position, which is convenient for the subsequent product ejection action of the mold.

[0048] In some other embodiments of the present utility model, an outer slider insert 3 is sleeved outside the core-pulling insert 2, and the core-pulling insert 2 and the outer slider insert 3 respectively clamp the product workpiece 1 inside and outside.

[0049] In some other embodiments of the present utility model, one end of the core-pulling insert 2 facing the slider seat 13 has a radially extending cam edge 21, and the cam edge 21 is clamped and assembled with the slider seat 13.

[0050] The beneficial effects of adopting the above technical solution are as follows: Ensure fixed connection.

[0051] The mold includes the side core-pulling mechanism mentioned above.

[0052] When the mold is closed, the inclined guide post 7 drives the slider seat 13 to move forward in place, the mold is closed, and waiting for the injection molding action. When the mold is opened, the shovel base 9 leaves the slider seat 13, the force of the compression spring 11 is released, and the core-pulling insert 2 and the slider seat 13 withdraw backward together, gradually disengaging from the plastic position to achieve the core-pulling effect. The slider seat 13 continues to withdraw backward, that is, the core-pulling action ends. The shoulder of the equal-height screw 10 contacts the insert fixing backing plate 5, driving the insert fixing backing plate 5 and the outer slider insert 3 to withdraw backward together, maintaining this state until completely leaving the plastic position, which is convenient for the subsequent product ejection action of the mold.

[0053] As Figure 9 shown, the slider seat 13 includes a core-pulling insert pressing block 6 fixed integrally, and the cam edge 21 is fixed to the core-pulling insert pressing block 6.

[0054] As Figure 11 shown, the radial direction of the core-pulling insert 2 constitutes the core-pulling insert disengaging gap L2 from the plastic position, and the insert fixing backing plate 5 and the slider seat 13 constitute the core-pulling stroke L1.

[0055] As Figure 6 the C-C section line of Figure 10 and the E-E section line of

[0056] are both broken lines. The above embodiments are only used to illustrate the technical concept and characteristics of the present utility model, and their purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it, and cannot be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A side core pulling mechanism, characterized in that: include: The core-pulling insert has one end in contact with the product workpiece; The slider seat is assembled with the end of the core-pulling insert away from the product workpiece; The insert fixing pad is located on the side of the slider seat facing the core-pulling insert; The equal height screw comprises an external thread section, a cylindrical section, and an enlarged head section in sequence along the axis in one direction, the cylindrical section movably passes through the insert fixing pad, the axial length of the cylindrical section is greater than the thickness of the insert fixing pad, and the external thread section is fixed to the slider seat; A compression spring is arranged in parallel with the equal height screw, and one end of the compression spring contacts the slider seat.

2. The side core pulling mechanism according to claim 1, characterized in that: The side of the insert fixing pad facing away from the slider seat is also provided with a slider insert fixing plate, the slider insert fixing plate is provided with a first through hole, and the enlarged head section is movably assembled with the first through hole; The insert fixing pad is relatively fixed to the slide block insert fixing plate.

3. The side core pulling mechanism according to claim 2, characterized in that: The insert fixing pad has a second through hole and a third through hole, and the slider seat has a blind hole and an internal threaded hole; The first through hole, the third through hole, and the internal threaded hole are coaxial with each other; The second through hole and the blind hole are coaxial with each other.

4. The side core pulling mechanism according to claim 3, characterized in that: The axial length of the first through hole is greater than the axial length of the enlarged head section, and the inner diameter of the first through hole is not less than the outer diameter of the enlarged head section; The inner diameter of the first through hole is greater than the inner diameter of the third through hole, the outer diameter of the enlarged head section is greater than the inner diameter of the third through hole, and the inner diameter of the third through hole is not less than the outer diameter of the cylindrical section; The external thread section and the internal thread hole are threadedly assembled.

5. The side core pulling mechanism according to claim 3, characterized in that: One end of the compression spring contacts the slider insert fixing plate, and the compression spring is located in the second through hole and the blind hole; The axial length of the compression spring in an uncompressed state is greater than the sum of the axial lengths of the second through hole and the blind hole.

6. The side core pulling mechanism according to claim 2, characterized in that: The insert fixing pad back and the slider insert fixing plate are fixed to each other through a plurality of assembly screws.

7. The side core pulling mechanism according to claim 1, characterized in that: The slider seat is movably equipped with an inclined guide column, and the length direction of the inclined guide column forms a non-right angle with the length direction of the core-pulling insert; A shovel base is provided on one side of the slider seat, and a wear-resistant block is provided on a side of the shovel base facing the slider seat, and a surface of the wear-resistant block is parallel to the length direction of the inclined guide column.

8. The side core pulling mechanism according to claim 1, characterized in that: The outer part of the core-pulling insert is covered with an outer sliding block insert, and the core-pulling insert and the outer sliding block insert respectively clamp the product workpiece inside and outside.

9. The side core pulling mechanism according to claim 1, characterized in that: One end of the core-pulling insert facing the slider seat is provided with a radially extending cam edge, and the cam edge is snap-fitted and assembled with the slider seat.

10. A mold, characterized in that: It comprises a side core pulling mechanism as claimed in any one of claims 1 to 9.

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