Hot runner medical injection mold convenient to demold

Abstract

The utility model relates to the technical field of injection molds, in particular to a hot runner medical injection mold convenient to demold, which comprises a base, a support is fixed at the top end of the base, a base is fixed at the top end of the support, a lower mold and two limiting pieces are arranged on one side of the support, and the limiting pieces are arranged on the other side of the support. A push plate matched with the lower die is arranged between the two limiting pieces, a groove matched with the push plate is formed in the top end of the base, a connecting plate is fixed to the bottom end of the push plate, a sliding block is fixed to the top end of the connecting plate, a sliding groove for the sliding block to vertically slide is formed in the support, a guide rod is fixed to the top end of the sliding block, a spring is arranged on the guide rod in a sleeved mode, and the spring is connected with the sliding groove in a sleeved mode. Through holes matched with the guide rods are formed in the base, a hydraulic cylinder is fixed to the top end of the base, a base plate is fixed to the bottom end of a piston rod of the hydraulic cylinder, a heating plate is fixed to the bottom end of the base plate, and an upper die is fixed to the bottom end of the heating plate; the mold is convenient to demold, time-saving and labor-saving.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely relates to a hot runner medical injection mold convenient to demould. BACKGROUND

[0002] Hot runner is a heating assembly system used in injection mold, which injects melted plastic particles into the cavity of the mold. Hot runner keeps the plastic in the runner in a molten state by heating. The entire runner from the nozzle outlet of the injection molding machine to the sprue is in a high-temperature state due to the presence of heating rods and heating rings near or in the center of the runner. The plastic in the runner remains molten. After shutdown, the runner does not need to be opened to remove the condensed material. When the machine is restarted, the runner only needs to be heated to the required temperature. Injection molding through a mold is a common method in modern production and is widely used in the production of plastic products in various industries. Due to the use of hot pressing method during injection molding, the finished product after injection molding is tightly attached to the lower mold, and manual removal is required, which is time-consuming and labor-intensive. Therefore, a hot runner medical injection mold convenient to demould is proposed to facilitate the demoulding of the finished product. SUMMARY

[0003] To solve the problems in the prior art, the utility model provides a hot runner medical injection mold convenient to demould.

[0004] The utility model discloses a hot runner medical injection mold convenient to demould, which comprises a base, a support fixed to the top end of the base, a base fixed to the top end of the support, a lower mold and two limiting pieces arranged on one side of the support, a push plate matched with the lower mold arranged between the two limiting pieces, a groove matched with the push plate arranged at the top end of the base, a connecting plate fixed to the bottom end of the push plate, a sliding block fixed to the top end of the connecting plate, a sliding groove for the vertical sliding of the sliding block arranged on the support, a guide rod fixed to the top end of the sliding block, a spring sleeved on the guide rod, a through hole matched with the guide rod arranged on the base, a hydraulic cylinder fixed to the top end of the base, a base plate fixed to the bottom end of the piston rod of the hydraulic cylinder, a heating plate fixed to the bottom end of the base plate, and an upper mold fixed to the bottom end of the heating plate.

[0005] Through the above technical scheme, the mold is first injection molded by the hot runner. After injection molding, the piston rod of the hydraulic cylinder drives the base plate to move downward, the heating plate heats the upper mold, and the upper mold cooperates with the lower mold to perform hot pressing shaping. The piston rod of the hydraulic cylinder drives the base plate to move upward. The sliding block is pushed upward during the upward movement of the base plate. The connecting plate moves upward, and the push plate moves upward with the connecting plate. The push plate pushes the finished product out of the lower mold, which is beneficial to demoulding, saves time and effort, and the piston rod of the hydraulic cylinder drives the base plate to move a small distance after the finished product is removed, and the spring pushes the sliding block to reset, which is beneficial to the resetting of the push plate.

[0006] Specifically, the limiting piece comprises a stop block, an insertion block and an insertion rod, the stop block is fixed at the top end of the base, the insertion block is connected with the lower mold, the side of the stop block away from the support is provided with a clamping groove matched with the insertion block, and the insertion block and the stop block are both provided with an insertion slot matched with the insertion rod.

[0007] By adopting the above technical scheme, the two insertion rods are lifted and the lower mold is pulled away from the support to move, so that the lower mold can be removed for maintenance or replacement.

[0008] Specifically, the lower mold is fixed with a handle on the side away from the support.

[0009] By adopting the above technical scheme, the handle is held by hand, so that the lower mold is convenient to take and place.

[0010] Specifically, the top end of the base plate is fixed with two vertical rods, and the top ends of the two vertical rods penetrate the base.

[0011] By adopting the above technical scheme, the setting of the vertical rods can improve the stability of the base plate.

[0012] Specifically, the bottom end of the base is fixed with a support leg at each corner, and the bottom end of each support leg is fixed with an anti-skid pad.

[0013] By adopting the above technical scheme, the setting of the support legs can support the base, and the setting of the anti-skid pads can improve the stability of the base.

[0014] The beneficial effects of the utility model are as follows:

[0015] (1) The hot runner medical injection mold convenient for demolding is first injected by the hot runner, the piston rod of the hydraulic cylinder drives the base plate to move downward after injection, the heating plate heats the upper mold, the upper mold and the lower mold cooperate to heat and press to shape, the piston rod of the hydraulic cylinder drives the base plate to move upward, the sliding block is pushed to move upward during the upward movement of the base plate, the connecting plate moves upward along with the upward movement of the sliding block, the push plate moves upward along with the upward movement of the connecting plate, the push plate pushes the finished product out of the lower mold after shaping, which is beneficial for demolding, saves time and effort, and the piston rod of the hydraulic cylinder drives the base plate to move downward by a small distance after the finished product is taken out, the spring drives the sliding block to reset, which is beneficial for the reset of the push plate.

[0016] (2) The hot runner medical injection mold convenient for demolding is convenient for installation, the lower mold is placed between the two stop blocks, and the bottom ends of the two insertion rods are inserted into the insertion slots on the two insertion blocks. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further illustrated below in combination with the drawings and embodiments.

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is a sectional view of the base of the utility model;

[0020] Figure 3 It is the utility model's Figure 1 It is an enlarged view of structure at A.

[0021] In the figure: 1, base; 2, stop block; 3, support; 4, base; 5, vertical rod; 6, hydraulic cylinder; 7, base plate; 8, heating plate; 9, upper die; 10, push plate; 11, limiting piece; 12, lower die; 13, handle; 14, support leg; 15, connecting plate; 16, sliding block; 17, spring; 18, guide rod; 19, plug block; 20, plug rod. Specific implementation

[0022] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0023] In order to facilitate demolding, as an embodiment of the utility model, as shown in Figure 1 、 Figure 2 A hot runner medical injection mold convenient for demolding, comprising a base 1, the top end of the base 1 is welded and fixed with a support 3, the top end of the support 3 is welded and fixed with a base 4, one side of the support 3 is provided with a lower die 12 and two limiting pieces 11, two limiting pieces 11 are provided with a push plate 10 matched with the lower die 12 between them, the top end of the base 1 is provided with a groove matched with the push plate 10, the bottom end of the push plate 10 is welded and fixed with a connecting plate 15, the top end of the connecting plate 15 is welded and fixed with a sliding block 16, the support 3 is provided with a sliding groove for the vertical sliding of the sliding block 16, the top end of the sliding block 16 is welded and fixed with a guide rod 18, the guide rod 18 is sleeved with a spring 17, the base 4 is provided with a through hole matched with the guide rod 18, the top end of the base 4 is fixed with a hydraulic cylinder 6 through bolts, the bottom end of the piston rod of the hydraulic cylinder 6 is fixed with a base plate 7 through bolts, the bottom end of the base plate 7 is fixed with a heating plate 8 through bolts, and the bottom end of the heating plate 8 is fixed with an upper die 9 through bolts.

[0024] In use, first, the mold is injection molded by a hot runner (prior art, not described again), after the injection is completed, the piston rod of the hydraulic cylinder 6 drives the base plate 7 to move down, the heating plate 8 heats the upper mold 9, the upper mold 9 is matched with the lower mold 12 to perform hot compression molding, the piston rod of the hydraulic cylinder 6 drives the base plate 7 to move up, the base plate 7 can push the sliding block 16 to move up during the moving up process, the connecting plate 15 moves up when the sliding block 16 moves up, the push plate 10 moves up when the connecting plate 15 moves up, the push plate 10 pushes the finished product out of the lower mold 12 after molding, which is beneficial to demolding, saves time and effort, and after the finished product is taken away, the piston rod of the hydraulic cylinder 6 drives the base plate 7 to move down a small distance, the spring 17 pushes the sliding block 16 to reset, which is beneficial to the resetting of the push plate 10.

[0025] In order to facilitate the disassembly and assembly of the lower mold 12, as shown in Figure 1 , Figure 3 , the limiting piece 11 includes a stop block 2, an insertion block 19 and an insertion rod 20, the stop block 2 is welded and fixed at the top end of the base 1, the insertion block 19 is welded and connected with the lower mold 12, the side of the stop block 2 away from the support 3 is provided with a clamping groove matched with the insertion block 19, and the insertion block 19 and the stop block 2 are both provided with an insertion slot matched with the insertion rod 20.

[0026] In use, the two insertion rods 20 are lifted and the lower mold 12 is moved away from the support 3 to be disassembled and maintained or replaced, and when installed, the lower mold 12 is placed between the two stop blocks 2, and the bottom ends of the two insertion rods 20 are inserted into the insertion slots in the two insertion blocks 19, which facilitates the installation of the lower mold 12.

[0027] In order to facilitate the taking and placing of the lower mold 12, as shown in Figure 1 , the side of the lower mold 12 away from the support 3 is welded and fixed with a handle 13.

[0028] In order to improve the stability of the base plate 7, as shown in Figure 1 , the top end of the base plate 7 is welded and fixed with two vertical rods 5, and the top ends of the two vertical rods 5 both penetrate the base 4.

[0029] In order to improve the stability of the base 1, as shown in Figure 1 , the bottom end of the base 1 is welded and fixed with a support leg 14 at each corner, and the bottom end of each of the four support legs 14 is fixed with an anti-skid pad through an adhesive.

[0030] In use, the hot runner first injects the mold into the mold (existing technology, not described in detail). After injection, the piston rod of the hydraulic cylinder 6 moves the base plate 7 downward. The heating plate 8 heats the upper mold 9. The upper mold 9 and the lower mold 12 cooperate to perform hot pressing and shaping. The piston rod of the hydraulic cylinder 6 moves the base plate 7 upward. During the upward movement of the base plate 7, it can push the slider 16 upward. When the slider 16 moves upward, the connecting plate 15 moves upward. When the connecting plate 15 moves upward, the push plate 10 moves upward. The push plate 10 pushes the molded finished product out of the lower mold 12, which is convenient for demolding and saves time and effort. After the finished product is removed, the piston rod of the hydraulic cylinder 6 moves the base plate 7 downward a short distance. The spring 17 pushes the slider 16 to reset, which is convenient for the reset of the push plate 10.

[0031] The lower mold 12 can be removed for maintenance or replacement by lifting the two insert rods 20 and pulling the lower mold 12 away from the support 3. During installation, the lower mold 12 is placed between the two stops 2 and the bottom ends of the two insert rods 20 are inserted into the slots on the two insert blocks 19 to facilitate the installation of the lower mold 12.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. Contents not described in detail in this utility model are considered prior art known to those skilled in the art.

Claims

1. A hot runner medical injection mold facilitating demolding, characterized in that, The utility model provides a kind of hydraulic pressure moulding machine, including base (1), the top end of base (1) is fixed with support (3), the top end of support (3) is fixed with pedestal (4), one side of support (3) is equipped with lower mould (12) and two limit pieces (11), two limit pieces (11) are equipped with with lower mould (12) adaptive push plate (10) between, the top end of base (1) is equipped with with push plate (10) adaptive recess, the bottom end of push plate (10) is fixed with connecting plate (15), the top end of connecting plate (15) is fixed with sliding block (16), the sliding slot for sliding block (16) vertical sliding is equipped on support (3), the top end of sliding block (16) is fixed with guide rod (18), spring (17) is sleeved on guide rod (18), the through hole for guide rod (18) adaptation is opened in pedestal (4), the top end of pedestal (4) is fixed with hydraulic cylinder (6), the bottom end of hydraulic cylinder (6) piston rod is fixed with base plate (7), the bottom end of base plate (7) is fixed with heating plate (8), the bottom end of heating plate (8) is fixed with upper mould (9).

2. The hot-runner medical injection mold with easy mold release of claim 1, wherein, The limit piece (11) includes stop block (2), plug block (19) and plug rod (20), the top end of base (1) is fixed with stop block (2), plug block (19) is connected with lower mould (12), the side of stop block (2) away from support (3) is equipped with with plug block (19) adaptation clamping slot, plug block (19) and stop block (2) are all equipped with with plug rod (20) adaptation insertion slot.

3. The hot runner medical injection mold with easy mold release of claim 1, wherein, The side of lower mould (12) away from support (3) is fixed with handle (13).

4. The hot-runner medical injection mold with easy mold release of claim 1, wherein, The top end of base plate (7) is fixed with two vertical rods (5), the top end of two vertical rods (5) all penetrates pedestal (4).

5. The hot runner medical injection mold with easy mold release of claim 1, wherein, The bottom end of base (1) is fixed with support leg (14) in four corners, the bottom end of four support legs (14) is all fixed with antiskid pad.

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