Plastic mold convenient to demold

Abstract

The utility model relates to the technical field of molds, and discloses a plastic mold convenient to demold, which comprises a support frame, a lower mold and an electric push rod are arranged on the support frame, a cavity is arranged in the lower mold, an upper mold is arranged at the bottom end of the electric push rod, a connecting rod is arranged at the top end in the cavity, and an electromagnet is arranged at the bottom end of the connecting rod. An electromagnet is arranged in the cavity, the bottom end of the electromagnet is connected with the bottom end of the inner wall of the cavity, a demolding mechanism is arranged in the cavity and used for ejecting a formed plastic product, a toggle switch is arranged on one side of the lower mold and used for controlling the electromagnet to work, and the demolding mechanism comprises a magnetic block, two connecting plates, two vertical plates, a top plate and a spring. The magnetic block is slidably arranged on the connecting rod; when in use, the plastic product can be automatically ejected after being cooled and molded, so that a worker is not easy to contact with a lower die when taking the plastic product, and the safety of taking the plastic product is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a plastic mold which is easy to demould. Background Art

[0002] A mold is a tool or device used to manufacture products or parts with a specific shape. They are usually made of metal or other hard materials and are used to process and shape raw materials under certain process conditions to ultimately produce the desired product or part. Molds are widely used in various manufacturing industries and are also used in the production of plastics.

[0003] In the production process of plastic products, it is common to inject molten plastic material into a plastic mold and then shape it by cooling. However, in the case of continuous operation, a large amount of heat may accumulate on the surface of the upper mold and the lower mold, and this heat cannot be dissipated in time, so that when the staff manually take the molded plastic product out of the lower mold, it is easy to get burned, which greatly reduces the safety of work. Therefore, those skilled in the art provide a plastic mold that is easy to demould to solve the problems raised in the above background technology.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that in the case of continuous work, a large amount of heat may accumulate on the surfaces of the upper mold and the lower mold, and the heat cannot be dissipated in time, which makes it easy for workers to get scalded when manually taking the molded plastic product out of the lower mold, thus greatly reducing the safety at work, the utility model provides a plastic mold that is easy to demold.

[0006] The utility model provides a plastic mold that is easy to demould, which adopts the following technical solution: a plastic mold that is easy to demould, comprising:

[0007] A support frame is provided with a lower mold and an electric push rod, a cavity is provided inside the lower mold, and an upper mold is provided at the bottom end of the electric push rod;

[0008] A connecting rod is arranged at the top of the cavity, an electromagnet is arranged at the bottom of the connecting rod, and the bottom of the electromagnet is connected to the bottom of the inner wall of the cavity;

[0009] The demoulding mechanism is arranged inside the cavity and is used to eject the molded plastic product;

[0010] And a toggle switch is arranged on one side of the lower die and is used to control the electromagnet to work.

[0011] Preferably, the demoulding mechanism comprises

[0012] A magnetic block is slidably disposed on the connecting rod and is magnetically attracted to the electromagnet;

[0013] Two connecting plates are provided, which are hingedly arranged on the left and right sides of the magnetic block respectively;

[0014] There are two vertical plates, each of which is hingedly arranged on the top of the corresponding connecting plate;

[0015] The top plate is slidably disposed in the cavity of the lower mold, and the top end of the vertical plate penetrates into the cavity of the lower mold and is connected to the bottom end of the top plate, so as to eject the molded plastic product;

[0016] The spring is sleeved on the outside of the connecting rod, and two ends of the spring are respectively connected with the bottom end of the magnetic block and the top end of the inner wall of the cavity.

[0017] Preferably, a push rod is provided at the inner top end of the support frame and the outer side of the lower mold for toggling the toggle switch.

[0018] Preferably, connecting blocks are provided on both the left and right sides of the upper mold, positioning rods are provided at the bottom ends of the connecting blocks, and multiple positioning rings used in conjunction with the positioning rods are provided on both the left and right sides of the lower mold.

[0019] Preferably, a plurality of sliding openings are provided inside the lower mold, the sliding openings are respectively connected with the cavity and the mold cavity inside the lower mold, and the top ends of the vertical plates pass through the sliding openings.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] Through the above technical scheme, the plastic mold for easy demoulding disclosed by the utility model is provided with a connecting rod, an electromagnet, a demoulding mechanism, a toggle switch and a push rod. When the upper mold moves down and closes with the lower mold, the push rod at the lower end can be used to toggle the toggle switch to stop the electromagnet from working. When the upper mold and the lower mold are separated, the magnetic block can be driven to move up by the spring, thereby driving the push plate to move up to eject the molded plastic product, making it difficult for the staff to contact the lower mold when taking the material, which is safer. Then, the upper mold continues to move up so that the push rod at the upper end can toggle the toggle switch, so that the electromagnet continues to work and can drive the push plate to reset, thereby ensuring the processing effect of the subsequent plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional connection structure of the upper mold and the lower mold after the mold is closed in the utility model;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the lower mold in the utility model.

[0025] Explanation of the accompanying drawings: 1. Support frame; 2. Lower mold; 3. Cavity; 4. Electric push rod; 5. Upper mold; 6. Connecting rod; 7. Electromagnet; 8. Demolding mechanism; 801. Magnetic block; 802. Connecting plate; 803. Vertical plate; 804. Top plate; 805. Spring; 9. Toggle switch; 10. Push rod; 11. Connecting block; 12. Positioning rod; 13. Positioning ring; 14. Slide. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model embodiment discloses a plastic mold which is easy to demould. Figure 1-3 A plastic mold for easy demoulding includes a supporting frame 1, a lower mold 2 and an electric push rod 4 are arranged on the supporting frame 1, a cavity 3 is opened inside the lower mold 2, an upper mold 5 is arranged at the bottom end of the electric push rod 4, a connecting rod 6 is arranged at the top end of the cavity 3, an electromagnet 7 is arranged at the bottom end of the connecting rod 6, and the bottom end of the electromagnet 7 is connected to the bottom end of the inner wall of the cavity 3, a demoulding mechanism 8 is arranged inside the cavity 3 for ejecting the formed plastic product, and a toggle switch 9 is arranged on one side of the lower mold 2 for controlling the electromagnet 7 to work;

[0028] Reference Figure 3 The demoulding mechanism 8 includes a magnetic block 801, two connecting plates 802, two vertical plates 803, a top plate 804 and a spring 805. The magnetic block 801 is slidably set on the connecting rod 6, and the magnetic block 801 is magnetically adsorbed with the electromagnet 7. The two connecting plates 802 are respectively hinged on the left and right sides of the magnetic block 801, and the two vertical plates 803 are respectively hinged on the top ends of the corresponding connecting plates 802. The top plate 804 is slidably set in the cavity of the lower mold 2. The top end of the vertical plate 803 penetrates into the cavity of the lower mold 2 and is connected to the bottom end of the top plate 804, which is used to eject the molded plastic product. The spring 805 is sleeved on the outside of the connecting rod 6, and the two ends of the spring 805 are respectively connected to the bottom end of the magnetic block 801 and the top end of the inner wall of the cavity 3.

[0029] By adopting the above technical solution, when the electromagnet 7 is not working, the adsorption force on the magnetic block 801 disappears, and then when the upper mold 5 moves upward after the plastic product is cooled and formed, the extrusion force on the top plate 804 disappears, so that the elastic force of the spring 805 can drive the magnetic block 801 to move upward, and the upward movement of the magnetic block 801 can push the top plate 804 to move upward through the connecting plate 802 and the vertical plate 803, and then the plastic product located on the top plate 804 can be ejected, so that it is not easy for the staff to contact the lower mold 2 when taking the plastic product, which greatly improves the safety when taking the material.

[0030] Reference Figure 1 and Figure 2 A push rod 10 is provided on the inner top of the support frame 1 and the outer side of the lower mold 2 for toggling the toggle switch 9.

[0031] By adopting the above technical solution, the push rod 10 is used to push the toggle switch 9 to control whether the electromagnet 7 works, so that the formed plastic product can be automatically ejected.

[0032] Reference Figure 2 A connecting block 11 is provided on both sides of the upper mold 5, a positioning rod 12 is provided at the bottom end of the connecting block 11, and a plurality of positioning rings 13 used in conjunction with the positioning rod 12 are provided on both sides of the lower mold 2.

[0033] By adopting the above technical solution, the positioning rod 12 can be driven to pass through the positioning ring 13 when the upper mold 5 moves downward, so that the upper mold 5 and the lower mold 2 can be positioned when they are closed, so that when the positions of the upper mold 5 and the lower mold 2 deviate, they can be corrected in time.

[0034] Reference Figure 3 A plurality of sliding openings 14 are provided inside the lower mold 2 , and the sliding openings 14 are respectively connected to the cavity 3 and the cavity inside the lower mold 2 , and the top end of the vertical plate 803 passes through the sliding openings 14 .

[0035] By adopting the above technical solution, the vertical plate 803 is made more stable when moving through the sliding opening 14 .

[0036] Working principle: When the utility model is in use, the electrical components appearing in the present application are all externally connected to a power source and a control switch. When processing a plastic product, first, the electric push rod 4 works to drive the upper mold 5 to move downward so that it fits with the electric push rod 4, and then the molten plastic material is injected into the cavity of the lower mold 2 for cooling and molding. When the upper mold 5 moves downward, it will drive the toggle switch 9 to move downward. When the upper mold 5 and the lower mold 2 are molded together, the toggle switch 9 contacts the ejector rod 10 at the lower end. The toggle switch 9 can be toggled through the ejector rod 10 at the lower end. At this time, the electromagnet 7 stops working, so that the adsorption force on the magnetic block 801 disappears. Then, after the plastic product is cooled and molded, when the upper mold 5 moves upward, the top plate 804 is squeezed. The force disappears, and the elastic force of the spring 805 can drive the magnetic block 801 to move upward. The upward movement of the magnetic block 801 can push the top plate 804 to move upward through the connecting plate 802 and the vertical plate 803, and then the plastic product located on the top plate 804 can be ejected, so that it is not easy for the staff to contact the lower mold 2 when taking the plastic product, which greatly improves the safety when taking the material, and then the upper mold 5 continues to move upward to drive the toggle switch 9 to contact the top rod 10 at the upper end, and the toggle switch 9 can be toggled through the top rod 10 at the upper end. At this time, the electromagnet 7 starts to work again, so that the magnetic block 801 can continue to be magnetically adsorbed, which can drive the top plate 804 to reset, thereby ensuring the processing effect of the subsequent plastic products.

[0037] When the utility model is used, the plastic product can be automatically ejected after being cooled and formed, so that the staff is not easy to contact the lower mold 2 when taking the material, thus greatly improving the safety when taking the plastic product.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic mold that is easy to demould, characterized in that: include A support frame (1) is provided with a lower mold (2) and an electric push rod (4), a cavity (3) is provided inside the lower mold (2), and an upper mold (5) is provided at the bottom end of the electric push rod (4); A connecting rod (6) is arranged at the top end of the cavity (3), an electromagnet (7) is arranged at the bottom end thereof, and the bottom end of the electromagnet (7) is connected to the bottom end of the inner wall of the cavity (3); A demoulding mechanism (8) is arranged inside the cavity (3) and is used to eject the molded plastic product; And a toggle switch (9) is arranged on one side of the lower mold (2) and is used to control the electromagnet (7) to work.

2. A plastic mold for easy demoulding according to claim 1, characterized in that: The demoulding mechanism (8) comprises A magnetic block (801) is slidably disposed on the connecting rod (6) and is magnetically attracted to the electromagnet (7); Two connecting plates (802) are provided, and are hingedly arranged on the left and right sides of the magnetic block (801) respectively; There are two vertical plates (803), which are hingedly arranged on the top of the corresponding connecting plates (802); The top plate (804) is slidably disposed in the cavity of the lower mold (2), and the top end of the vertical plate (803) penetrates into the cavity of the lower mold (2) and is connected to the bottom end of the top plate (804) for ejecting the molded plastic product; The spring (805) is sleeved on the outside of the connecting rod (6), and its two ends are respectively connected to the bottom end of the magnetic block (801) and the top end of the inner wall of the cavity (3).

3. A plastic mold for easy demoulding according to claim 1, characterized in that: A push rod (10) is provided on the inner top end of the support frame (1) and the outer side of the lower mold (2) for toggling the toggle switch (9).

4. A plastic mold for easy demoulding according to claim 3, characterized in that: The upper mold (5) is provided with connecting blocks (11) on both sides, and the bottom end of the connecting blocks (11) is provided with positioning rods (12). The lower mold (2) is provided with a plurality of positioning rings (13) for use with the positioning rods (12) on both sides.

5. The plastic mold for easy demoulding according to claim 2, characterized in that: A plurality of sliding openings (14) are provided inside the lower mold (2), and the sliding openings (14) are respectively connected to the cavity (3) and the mold cavity inside the lower mold (2), and the top end of the vertical plate (803) passes through the sliding openings (14).

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