Scissor foot forming die with anti-crushing structure

Abstract

The utility model relates to the technical field of dies, and discloses a scissor foot forming die with an anti-crushing structure, which comprises a base, the top of the base is fixedly connected with a lower die holder, the top of the lower die holder is fixedly connected with a lower die plate, two ends of the base are fixedly connected with air cylinders, output ends of the two air cylinders are fixedly connected with an upper die holder, and the upper die holder is fixedly connected with a lower die plate. The bottom of the upper die base is fixedly connected with an upper die plate, an anti-crushing structure is arranged on the inner side of the lower die base and comprises a first sliding rod, the top of the first sliding rod is fixedly connected with a bearing plate, and the top end of the first sliding rod is sleeved with a first spring. The two ends of the bottom of the first sliding rod are each provided with a linkage piece matched with translation of the upper die base so as to drive the first sliding rod to slide in the vertical direction. According to the utility model, not only can the impact of the upper template on the lower template be relieved, but also the extrusion on the formed scissor foot can be relieved, and the problem that the quality is reduced due to the fact that the scissor foot is crushed is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and more particularly to a scissor leg forming mold with an anti-crushing structure. Background Art

[0002] The keyboard scissor leg consists of an inner shear and an outer shear. The inner shear is inserted into the outer shear. There is a slot for installing the inner shear on each of the two opposite side walls of the outer shear mounting hole. In order to ensure production efficiency, the scissor leg mold is usually equipped with an inclined pin on the back mold that can move synchronously with the ejector to realize the molding of the slot.

[0003] A search revealed that Chinese patent publication number CN220179544U discloses "a scissor leg mold, comprising a front mold and a rear mold, a mold cavity defined between the front and rear molds, and a slanted top portion comprising a main body and a slanted ejector member, the main body being movably disposed on the front mold and drivingly connected to the rear mold, a protrusion being provided on a side of the slanted ejector member adjacent to the rear mold, the main body having a first position in which the protrusion extends into the mold cavity to form an injection hole on a part within the mold cavity, and a second position in which the protrusion exits the injection hole."

[0004] In the above patent, during the closing process of the scissor foot mold, the upper mold and the lower mold cooperate with each other and interact with each other, which causes extrusion wear between the two. After the keyboard scissor foot is injection molded, it is squeezed by the upper mold and the lower mold, which makes the injection-molded keyboard scissor foot easily crushed, thereby affecting the quality of the final keyboard scissor foot. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a scissor foot forming mold with an anti-crushing structure, which has the advantage of preventing the formed keyboard scissor feet from being crushed.

[0006] The top of the sliding panel also is provided with an interlocking structure, and the interlocking structure and the like are connected with each other to form a round shank, and the interlocking structure is connected with the bottom of the sliding panel to form a round shank.

[0007] As a preferred technical solution of the present invention, the lower die base is a U-shaped structure, and the lower template is fixedly connected to the horizontal section of the lower die base.

[0008] As a preferred technical solution of the present invention, a first mounting groove corresponding to the pressure plate is opened on the inner side of the lower die base, and the pressure plate is slidably connected to the inner wall of the first mounting groove.

[0009] As a preferred technical solution of the present invention, the first mounting groove is communicated with the cavity of the lower template, and the area of the top surface of the pressure plate is smaller than the bottom area of the cavity of the lower template.

[0010] As an optimal technical solution of the present invention, the linkage includes a second sliding rod, the second sliding rod passes through the inner wall of the lower mold base, and the second sliding rod is slidably connected to the inner wall of the lower mold base, one end of the second sliding rod is hinged to a connecting rod, and the connecting rod is hinged to the first sliding rod at one end away from the second sliding rod, and the other end of the second sliding rod is fixedly connected to the first wedge block. The inner side of the lower mold base is provided with a second mounting groove corresponding to the first wedge block, the first wedge block is slidably connected to the inner wall of the second mounting groove, and a second spring is sleeved on the first sliding rod, one end of the second spring is in contact with the first wedge block, and the other end of the second spring is in contact with the inner wall of the second mounting groove.

[0011] As a preferred technical solution of the present invention, one end of the lower mold base is slidably connected to a guide rod that passes through the top wall of the lower mold base, the top of the guide rod is fixedly connected to the upper mold base, and the bottom end of the guide rod is fixedly connected to a second wedge block, which can interfere with the inclined surface of the first wedge block by moving downward.

[0012] As a preferred technical solution of the present invention, a through injection port is provided on the top of the upper mold base, and the injection port is located directly above the cavity of the lower mold plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: when closing the mold, the upper mold base is moved downward by controlling the cylinder, so that the upper mold plate and the lower mold plate are slidably matched, and then the material is injected into the cavity of the lower mold plate through the injection port for molding. During the mold closing process, the linkage part will drive the first slide bar to move downward. At this time, the first spring is compressed to generate a reverse elastic force, so that the first spring buffers the pressure plate. This not only reduces the impact of the upper mold plate on the lower mold plate, but also reduces the extrusion of the molded scissor feet, effectively avoiding the problem of the scissor feet being crushed and causing quality reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a scissor foot forming mold with an anti-crushing structure of the utility model. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of a scissor foot forming mold with an anti-crushing structure of the utility model. Figure 2 ;

[0016] Figure 3 This is a schematic structural diagram of the anti-compression structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the linkage part of the utility model.

[0018] In the figure: 1. Base; 2. Lower mold base; 3. Lower mold plate; 4. Cylinder; 5. Upper mold base; 6. Upper mold plate; 7. Injection port; 8. Anti-crushing structure; 81. First slide bar; 82. Pressure plate; 83. First spring; 84. First mounting groove; 85. Linkage member; 851. Second slide bar; 852. Connecting rod; 853. Second mounting groove; 854. First wedge block; 855. Second spring; 856. Guide rod; 857. Second wedge block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figures 1 to 4As shown, the utility model provides a scissor foot forming mold with an anti-crushing structure, including a base 1, the top of the base 1 is fixedly connected to a lower mold base 2, the top of the lower mold base 2 is fixedly connected to a lower template 3, both ends of the base 1 are fixedly connected to a cylinder 4, the output ends of the two cylinders 4 are fixedly connected to an upper mold base 5, the bottom of the upper mold base 5 is fixedly connected to an upper template 6 that slides with the lower template 3, the top of the upper mold base 5 is provided with a through injection port 7, the injection port 7 is located just above the cavity of the lower template 3, the inner side of the lower mold base 2 is provided with an anti-crushing structure 8, the anti-crushing structure 8 includes a first slide bar 81, the first slide bar 81 The first slide bar 81 passes through the top wall of the lower die base 2, and is slidably connected to the top wall of the lower die base 2. The top of the first slide bar 81 is fixedly connected to the pressure plate 82. The inner side of the lower die base 2 is provided with a first mounting groove 84 corresponding to the pressure plate 82. The pressure plate 82 is slidably connected to the inner wall of the first mounting groove 84. The top end of the first slide bar 81 is sleeved with a first spring 83. The top end of the first spring 83 contacts the pressure plate 82, and the bottom end of the first spring 83 contacts the inner wall of the lower die base 2. Both ends of the bottom of the first slide bar 81 are provided with linkage parts 85 that cooperate with the translation of the upper die base 5 to drive the first slide bar 81 to slide in the vertical direction.

[0021] When closing the mold, the upper mold base 5 is moved downward by controlling the cylinder 4, so that the upper mold plate 6 and the lower mold plate 3 are slidably matched, and then the material is injected into the cavity of the lower mold plate 3 through the injection port 7 for molding. During the mold closing process, the linkage part 85 will drive the first slide bar 81 to move downward. At this time, the first spring 83 is compressed to generate a reverse elastic force, so that the first spring 83 buffers the pressure plate 82. This can not only reduce the impact of the upper mold plate 6 on the lower mold plate 3, but also reduce the extrusion of the molded scissor feet, effectively avoiding the problem of the scissor feet being crushed and causing quality reduction.

[0022] Among them, the lower mold base 2 is a U-shaped structure, the lower template 3 is fixedly connected to the horizontal section of the lower mold base 2, the first mounting groove 84 is connected to the cavity of the lower template 3, and the area of the top surface of the pressure plate 82 is smaller than the bottom area of the cavity of the lower template 3.

[0023] Among them, the linkage member 85 includes a second slide bar 851, the second slide bar 851 passes through the inner wall of the lower mold base 2, and the second slide bar 851 is slidably connected to the inner wall of the lower mold base 2, one end of the second slide bar 851 is hinged with a connecting rod 852, and the end of the connecting rod 852 away from the second slide bar 851 is hinged to the first slide bar 81, and the other end of the second slide bar 851 is fixedly connected to a first wedge block 854, and a second mounting groove 853 corresponding to the first wedge block 854 is opened on the inner side of the lower mold base 2, and the first wedge block 854 and the second mounting groove 853 are connected. 53 is slidably connected to the inner wall of the first slide bar 81, and a second spring 855 is sleeved on the first slide bar 81. One end of the second spring 855 contacts the first wedge block 854, and the other end of the second spring 855 contacts the inner wall of the second mounting groove 853. One end of the lower die base 2 is slidably connected to a guide rod 856 that passes through the top wall of the lower die base 2. The top of the guide rod 856 is fixedly connected to the upper die base 5, and the bottom end of the guide rod 856 is fixedly connected to the second wedge block 857. The second wedge block 857 can contact the inclined surface of the first wedge block 854 by moving downward.

[0024] Working principle: When closing the mold, the upper mold base 5 is moved downward by controlling the cylinder 4, so that the upper mold plate 6 and the lower mold plate 3 are slidably matched, and then the material is injected into the cavity of the lower mold plate 3 through the injection port 7 for molding. During the mold closing process, the upper mold base 5 will drive the guide rod 856 to move downward, so that the second wedge block 857 conflicts with the first wedge block 854 and exerts pressure on it, so that the first wedge block 854 drives the second slide bar 851 to slide. At this time, the second spring 855 is squeezed and accumulates potential energy, so that the connecting rod 852 drives the first slide bar 81 to move downward. At this time, the first spring 83 is compressed to generate reverse elastic force, so that the first spring 83 buffers the pressure plate 82. This can not only slow down the impact of the upper mold plate 6 on the lower mold plate 3, but also slow down the squeezing of the formed scissors feet.

[0025] To demould, the upper mold base 5 is moved upward by controlling the cylinder 4, so that the guide rod 856 drives the second wedge block 857 to move upward and disengage from the first wedge block 854. At this time, the second spring 855 releases the potential energy, and the first wedge block 854 will slide in the opposite direction, which makes the first slide bar 81 slide upward, and the pressure plate 82 slide upward and push out the scissor feet formed in the cavity of the lower mold plate 3, thereby realizing automatic demoulding without the need for manual demoulding, which greatly improves production efficiency.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scissor leg forming mold with an anti-crushing structure, comprising a base (1), the top of the base (1) is fixedly connected to a lower mold base (2), the top of the lower mold base (2) is fixedly connected to a lower template (3), both ends of the base (1) are fixedly connected to cylinders (4), the output ends of the two cylinders (4) are fixedly connected to an upper mold base (5), the bottom of the upper mold base (5) is fixedly connected to an upper template (6) that slides with the lower template (3), and is characterized in that: The inner side of the lower die base (2) is provided with an anti-crushing structure (8), and the anti-crushing structure (8) includes a first slide bar (81), the first slide bar (81) passes through the top wall of the lower die base (2), and the first slide bar (81) is slidably connected to the top wall of the lower die base (2), the top of the first slide bar (81) is fixedly connected to a pressure plate (82), the top end of the first slide bar (81) is sleeved with a first spring (83), the top end of the first spring (83) is in contact with the pressure plate (82), the bottom end of the first spring (83) is in contact with the inner wall of the lower die base (2), and both ends of the bottom of the first slide bar (81) are provided with a linkage (85) that cooperates with the translation of the upper die base (5) to drive the first slide bar (81) to slide in the vertical direction.

2. The scissor leg forming mold with an anti-crushing structure according to claim 1, characterized in that: The lower die base (2) is a U-shaped structure, and the lower template (3) is fixedly connected to the horizontal section of the lower die base (2).

3. The scissor leg forming mold with an anti-crushing structure according to claim 1, characterized in that: A first mounting groove (84) corresponding to the pressure plate (82) is provided on the inner side of the lower die base (2), and the pressure plate (82) is slidably connected to the inner wall of the first mounting groove (84).

4. The scissor leg forming die with an anti-crushing structure according to claim 3, characterized in that: The first mounting groove (84) is in communication with the cavity of the lower template (3), and the area of the top surface of the pressure plate (82) is smaller than the bottom area of the cavity of the lower template (3).

5. The scissor leg forming die with an anti-crushing structure according to claim 1, characterized in that: The linkage member (85) includes a second slide bar (851), the second slide bar (851) passes through the inner wall of the lower die base (2), and the second slide bar (851) is slidably connected to the inner wall of the lower die base (2), one end of the second slide bar (851) is hinged to a connecting bar (852), one end of the connecting bar (852) away from the second slide bar (851) is hinged to the first slide bar (81), and the other end of the second slide bar (851) is fixedly connected to the first wedge block (81). 54), a second mounting groove (853) corresponding to the first wedge block (854) is provided on the inner side of the lower mold base (2), the first wedge block (854) is slidably connected to the inner wall of the second mounting groove (853), a second spring (855) is sleeved on the first slide bar (81), one end of the second spring (855) is in contact with the first wedge block (854), and the other end of the second spring (855) is in contact with the inner wall of the second mounting groove (853).

6. The scissor leg forming die with an anti-crushing structure according to claim 5, characterized in that: One end of the lower die base (2) is slidably connected to a guide rod (856) that passes through the top wall of the lower die base (2); the top of the guide rod (856) is fixedly connected to the upper die base (5); the bottom end of the guide rod (856) is fixedly connected to a second wedge block (857); the second wedge block (857) can collide with the inclined surface of the first wedge block (854) by translating downward.

7. The scissor leg forming die with an anti-crushing structure according to claim 1, characterized in that: The top of the upper mold base (5) is provided with a through injection port (7), and the injection port (7) is located directly above the mold cavity of the lower mold plate (3).

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