Anti-collision mechanism with bush at bottom of sliding block

Abstract

The utility model relates to the technical field of injection molds, in particular to an anti-collision mechanism with bushes at the bottoms of sliders, which comprises a lower mold plate and a bearing plate arranged below the lower mold plate, a plurality of sliders are slidably arranged on the lower mold plate, an insert penetrating through the lower mold plate is fixedly connected onto the bearing plate and slidably connected with the lower mold plate, and the bushing is arranged on the lower mold plate. The insert is used for placing the hardware lining, the bearing plate is provided with an elastic part used for pushing the lower die plate to move upwards, and when the hardware lining is placed on the insert, the elastic part can push the lower die plate and the sliding block to move upwards, so that the position of the hardware lining is lower than that of the sliding block. According to the utility model, through the arrangement of the elastic part, the lower template can be pushed to move upwards, and when the hardware lining is placed on the insert, the position of the hardware lining is lower than that of the sliding blocks, so that the plurality of sliding blocks cannot collide with the hardware lining when being close to each other for mold closing, and the mold closing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an anti-collision mechanism with a bushing at the bottom of a slide block. Background Art

[0002] Plastic injection molding is a processing method that injects molten plastic material into a mold and obtains a plastic product of the desired shape and size through cooling and solidification. In the manufacture of certain specific products, it is sometimes necessary to perform injection molding on hardware so that the new injection molded part contains hardware. When the mold is closed, the hardware is at the bottom of the slider. If the hardware is placed higher than the bottom plane of the slider, the slider is likely to hit the hardware during the mold closing movement, resulting in a mold collision.

[0003] At present, the inserts for fixing hardware are usually made 0.01-0.03mm lower, or the fixture is used to place the hardware into the mold, so that there is a 0.01-0.03mm gap between the hardware and the slider when the slider is molded. Although the above scheme can reduce the probability of mold collision to a certain extent, in the process of placing the hardware into the mold manually or by the fixture, the placement of the hardware by the manual or fixture is prone to uneven placement and inadequate placement. Once the hardware is higher than the bottom surface of the slider, mold collision is likely to occur, causing damage to the mold. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an anti-collision mechanism with a bushing at the bottom of a slider, so as to solve the problem that the slider will not collide with the hardware bushing when the sliders are close to each other for mold closing.

[0005] Based on the above purpose, the utility model provides an anti-collision mechanism with a bushing at the bottom of a slider, which is used in conjunction with an upper template and an injection molding machine, including a lower template, and a plurality of sliders are slidably arranged on the lower template, and also includes a supporting plate arranged below the lower template, and an insert that passes through the lower template is fixedly connected to the supporting plate, and the insert is slidably connected to the lower template, and the insert is used to place a hardware bushing.

[0006] The support plate is provided with an elastic part for pushing the lower template upward. When the hardware bushing is placed on the insert, the elastic part can push the lower template and the slider upward, so that the position of the hardware bushing is lower than the slider, so that several sliders will not hit the hardware bushing when they are close to each other for mold closing.

[0007] Preferably, the elastic part comprises a spring fixedly connected to the support plate, and a mounting groove for placing the spring is provided at the bottom of the lower template.

[0008] Preferably, the elastic part further comprises a guide rod detachably mounted on the support plate, a through hole for the guide rod to pass through is formed on the lower template, and the top end of the guide rod is fixedly connected to the limit head.

[0009] Preferably, the guide rod is provided with an external thread on its circumferential surface near its bottom end, and the support plate is provided with an internal thread hole matched with the external thread, and the limit head is provided with an indented hole.

[0010] Preferably, the number of the springs and the number of the guide rods are four, and the four springs and the four guide rods are distributed at the four corners of the carrier plate.

[0011] Preferably, the insert includes a fixing column and a connecting column, the fixing column is fixedly connected to the supporting plate, and a channel for the connecting column to pass through is opened on the lower template, the connecting column is fixedly connected to the top end of the fixing column, and the radius of the connecting column is smaller than the radius of the fixing column to facilitate the hardware bushing to be mounted on the connecting column.

[0012] The beneficial effects of the utility model: the utility model provides an anti-collision mechanism with a bushing at the bottom of a slider, which can push the lower template to move upward through the setting of the elastic part. When the hardware bushing is placed on the insert, the position of the hardware bushing should be lower than the slider, avoiding placement errors, so that several sliders will not hit the hardware bushing when they are close to each other for mold closing. Subsequently, when the upper template and the lower template are molded together, the upper template will push the lower template and the slider to move downward, so that the hardware bushing can fit tightly with the bottom of the slider, and an injection cavity can be formed under the cooperation of the upper template and the slider, thereby facilitating injection molding on the hardware bushing to form an injection molded part containing the hardware bushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the support plate, spring and lower template in the embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the support plate, the elastic part, the insert and the slider in the embodiment of the utility model;

[0017] Figure 4 It is an enlarged view of the structure at location A in the embodiment of the utility model.

[0018] In the figure: 1, lower template; 2, slider; 3, support plate; 4, insert; 41, fixing column; 42, connecting column; 5, hardware bushing; 6, elastic part; 61, spring; 62, guide rod; 63, limit head. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, an anti-collision mechanism with a bushing at the bottom of a slider is used in conjunction with an upper template and an injection molding machine, including a lower template 1, and a plurality of sliders 2 are slidably arranged on the lower template 1. The number of sliders 2 in this application is three, and the specific number of sliders 2 can be selected according to actual conditions. It also includes a support plate 3 arranged below the lower template 1, and an insert 4 that penetrates the lower template 1 is fixedly connected to the support plate 3, and the insert 4 is slidably connected to the lower template 1, and the insert 4 is used to place a hardware bushing 5;

[0022] An elastic part 6 for pushing the lower template 1 upward is provided on the support plate 3. When the hardware bushing 5 is placed on the insert 4, the elastic part 6 can push the lower template 1 and the slider 2 upward, so that the position of the hardware bushing 5 is lower than the slider 2, so that several sliders 2 will not hit the hardware bushing 5 when they are close to each other for mold closing.

[0023] When it is necessary to perform injection molding on the metal bushing 5 to form an injection molded part containing the metal bushing 5, the metal bushing 5 is first placed on the insert 4, and the lower template 1 is moved upward under the push of the elastic part 6, so that the position of the metal bushing 5 is lower than the slider 2, thereby improving the placement error of the metal bushing 5. When several sliders 2 are close to each other for mold closing, the slider 2 will not hit the metal bushing 5. Then, when the upper template and the lower template 1 are molded together, the upper template will push the lower template 1 and the slider 2 to move downward, so that the metal bushing 5 can fit tightly with the bottom of the slider 2. With the cooperation of the upper template and the slider 2, an injection cavity can be formed, and then injection molding can be performed into the injection cavity by an injection molding machine to form an injection molded part containing the metal bushing 5.

[0024] In a preferred embodiment of the present invention, the elastic portion 6 includes a spring 61 fixedly connected to the carrier plate 3 , and a mounting groove for placing the spring 61 is provided at the bottom of the lower template 1 .

[0025] The elastic force of the spring 61 pushes the lower template 1 upward, so that there is a gap between the support plate 3 and the lower template 1. The position of the hardware bushing 5 should be lower than the slider 2. For example, the hardware bushing 5 can be 3 mm lower than the slider 2, or it can be another distance. It can be adjusted according to actual production conditions, such as by adjusting the guide rod 62 or replacing springs 61 of different specifications, etc., so that the slider 2 is not easy to hit the hardware bushing 5 when the mold is closed.

[0026] In another preferred embodiment of the utility model, the elastic part 6 also includes a guide rod 62 detachably mounted on the support plate 3, a through hole for the guide rod 62 to pass through is opened on the lower template 1, and the top end of the guide rod 62 is fixedly connected to a limit head 63, the guide rod 62 guides the displacement of the lower template 1, so that the upper and lower movements of the lower template 1 are smoother and more stable, and the limit head 63 limits the displacement of the lower template 1.

[0027] In another preferred embodiment of the utility model, the guide rod 62 is provided with an external thread on the circumferential surface near its bottom end, and the support plate 3 is provided with an internal thread hole compatible with the external thread, and the limit head 63 is provided with an inner recessed hole, which can be a hexagonal hole or a slotted hole or a cross hole, so that the guide rod 62 can be rotated with the help of an external tool, thereby adjusting the length of the bottom end of the guide rod 62 screwed into the support plate 3 or screwed out of the support plate 3, which is convenient for adjusting the displacement of the lower template 1 pushed by the spring 61, and during the adjustment process, it can be accurately measured and adjusted with the help of a vernier caliper or other measuring tools.

[0028] It should be noted that the number of springs 61 and guide rods 62 is four, and the four springs 61 and the four guide rods 62 are distributed at the four corners of the support plate 3. By arranging the springs 61 and the guide rods 62 at the corners of the support plate 3, the thrust on the lower template 1 is large enough and stable enough, so that the lower template 1 moves relatively smoothly.

[0029] It should be noted that the insert 4 includes a fixing column 41 and a connecting column 42. The fixing column 41 is fixedly connected to the support plate 3, and a channel for the connecting column 42 to pass through is opened on the lower template 1. The connecting column 42 is fixedly connected to the top of the fixing column 41. The radius of the connecting column 42 is smaller than the radius of the fixing column 41, so that the hardware bushing 5 can be mounted on the connecting column 42.

[0030] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0031] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-collision mechanism with a bushing at the bottom of a slider, used in conjunction with an upper template and an injection molding machine, comprising a lower template (1), and a plurality of sliders (2) are slidably arranged on the lower template (1), characterized in that: It also includes a support plate (3) arranged below the lower template (1), an insert (4) penetrating the lower template (1) being fixedly connected to the support plate (3), and the insert (4) is slidably connected to the lower template (1), and the insert (4) is used to place a hardware bushing (5); The support plate (3) is provided with an elastic part (6) for pushing the lower template (1) upward. When the hardware bushing (5) is placed on the insert (4), the elastic part (6) can push the lower template (1) and the slider (2) upward, so that the position of the hardware bushing (5) is lower than the slider (2), so that when a plurality of sliders (2) are close to each other for mold closing, they will not collide with the hardware bushing (5).

2. The anti-collision mechanism with a bushing at the bottom of the slider according to claim 1, characterized in that: The elastic part (6) comprises a spring (61) fixedly connected to the support plate (3), and a mounting groove for accommodating the spring (61) is provided at the bottom of the lower template (1).

3. The anti-collision mechanism with a bushing at the bottom of the slider according to claim 2, characterized in that: The elastic part (6) also includes a guide rod (62) detachably mounted on the support plate (3); a through hole for the guide rod (62) to pass through is provided on the lower template (1); and the top end of the guide rod (62) is fixedly connected to a limit head (63).

4. The anti-collision mechanism with a bushing at the bottom of the slider according to claim 3, characterized in that: The circumferential surface of the guide rod (62) near the end is provided with an external thread, and the support plate (3) is provided with an internal thread hole matched with the external thread, and the limit head (63) is provided with an indented hole.

5. The anti-collision mechanism with a bushing at the bottom of the slider according to claim 3, characterized in that: The number of the springs (61) and the number of the guide rods (62) are both four, and the four springs (61) and the four guide rods (62) are distributed at the four corners of the carrier plate (3).

6. The anti-collision mechanism with a bushing at the bottom of the slider according to claim 1, characterized in that: The insert (4) comprises a fixing column (41) and a connecting column (42); the fixing column (41) is fixedly connected to the support plate (3); a passage for the connecting column (42) to pass through is provided on the lower template (1); the connecting column (42) is fixedly connected to the top end of the fixing column (41); the radius of the connecting column (42) is smaller than the radius of the fixing column (41), so that the hardware bushing (5) can be sleeved on the connecting column (42).

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