Automatic compensation tolerance-free vacuum automatic filling expansion injection head

Abstract

The utility model relates to the technical field of injection heads, in particular to an automatic compensation tolerance-free vacuum automatic filling expansion injection head which comprises a base, a wear-resisting piece, an expansion block diameter, an injection head body, a connector, an injection rod and a pull rod. The wear-resistant sheet fixing nut is used for fixing the wear-resistant sheet, the expansion block diameter and the expansion core on the base, the connector is used for connecting the wear-resistant sheet fixing nut and the injection rod, and after the wear-resistant sheet is worn by the expansion injection head, the pull rod in the connector automatically pulls the expansion core, so that the expansion core moves and jacks up the expansion block diameter; according to the expansion type injection head, automatic supplementation can be carried out according to the abrasion loss of the abrasion-resistant piece, the abrasion-resistant piece can be jacked up to be completely used up, frequent replacement is not needed, the injection cost is greatly saved, and the problems that according to an existing injection head, the abrasion-resistant piece needs to be replaced frequently, and the abrasion-resistant piece cannot be replaced frequently are solved. And the cost is high.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding heads, in particular to an automatic compensation, zero-tolerance vacuum automatic filling and expansion injection molding head. Background Art

[0002] Die casting is a casting method in which molten metal fills the mold cavity at an extremely high speed under high pressure. During the die-casting process, the punch reciprocates within the die chamber. If the thermal expansion coefficients of the materials used differ significantly, the punch and chamber are heated unevenly, or the shot rod bends and deforms, the molten aluminum can become embedded in the gap between the punch and chamber, forming a cushion or abrasive particles, which can cause wear on the punch.

[0003] At present, the existing technology CN201960110U discloses a shot punch consisting of a punch body and a laser cladding layer. The material of the laser cladding layer is Fe-based, Ni-based, Co-based self-fluxing alloy or WC ceramic particle reinforced wear-resistant alloy material, with an average thickness of 0.3 to 1.5 mm. The material of the punch body is cast iron, carbon steel or alloy steel. The laser cladding layer is connected to the punch body by metallurgical bonding. The hardness of the laser cladding layer is about 1.5 to 3 times the hardness of the punch body, and the difference in thermal expansion coefficient is small, which enables the recycling of the shot punch, which is beneficial to energy saving and environmental protection.

[0004] Although the above-mentioned injection head can slow down the wear rate of the wear-resistant sheet, the wear-resistant sheet still wears out and needs to be replaced frequently, which is costly. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic compensation zero-tolerance vacuum automatic filling expansion shot head, aiming to solve the problem that the existing shot head requires frequent replacement of wear-resistant sheets and is costly.

[0006] To achieve the above-mentioned purpose, the utility model provides an automatic compensation, tolerance-free vacuum automatic filling, expansion pressure shot head, including a base, a wear-resistant plate, an expansion block diameter, an expansion core, a wear-resistant plate fixing nut, a connecting head, a pressure shot rod and a pull rod; the expansion core is arranged on one side of the base, the expansion block diameter is arranged on the outside of the expansion core, the wear-resistant plate is arranged on the side of the expansion block diameter away from the expansion core, the wear-resistant plate fixing nut is arranged on the side of the wear-resistant plate away from the base, the connecting head is threadedly connected to the wear-resistant plate fixing nut, and is located on the side of the wear-resistant plate fixing nut away from the wear-resistant plate, the pressure shot rod is threadedly connected to the connecting head, and is located on the side of the connecting head away from the wear-resistant plate fixing nut, and the pull rod is fixedly connected to the expansion core and passes through the connecting head.

[0007] Among them, the pull rod includes a tension spring fixing pin, a tension spring and a tension spring limiting pin. The tension spring fixing pin is fixedly connected to the expansion core and is located on the side of the expansion core away from the base. The tension spring is fixedly connected to the tension spring fixing pin and is located on the side of the tension spring fixing pin away from the expansion core. The tension spring limiting pin is fixedly connected to the tension spring and passes through the connecting head.

[0008] Wherein, there are 8 wear-resistant sheets.

[0009] Among them, the expansion block diameter has 4 pieces.

[0010] Among them, the expansion block diameter has 8 pieces.

[0011] The utility model discloses an automatic compensation zero-tolerance vacuum automatic filling expansion pressure shot head, the base provides installation conditions for the wear-resistant sheet, the expansion block diameter and the expansion core, the wear-resistant sheet fixing nut is used to fix the wear-resistant sheet, the expansion block diameter and the expansion core on the base, the connecting head is used to connect the wear-resistant sheet fixing nut and the pressure shot rod, and the pressure shot rod is used to support and propel the zero-tolerance expansion pressure shot head. After the wear-resistant sheet is worn out during use of the expansion pressure shot head, the pull rod in the connecting head automatically pulls the expansion core, so that the expansion core moves and lifts the expansion block diameter, and the expansion block diameter lifts the worn wear-resistant sheet, and then lifts the wear-resistant sheet to make up for the wear. The modified pressure shot head can automatically replenish according to the wear amount of the wear-resistant sheet, and can lift the wear-resistant sheet to be completely used up without frequent replacement, which greatly saves the cost of injection and solves the problem that the existing pressure shot head needs to frequently replace the wear-resistant sheet, which is costly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0013] Figure 1 It is a structural schematic diagram of the utility model's automatic compensation, zero-tolerance vacuum automatic filling, expansion and squeezing head.

[0014] Figure 2 It is a longitudinal sectional view of the automatic compensation zero-tolerance vacuum automatic filling expansion injection head along the expansion core of the utility model.

[0015] Figure 3 It is a transverse cross-sectional view of the automatic compensation zero-tolerance vacuum automatic filling expansion injection head along the expansion core of the utility model.

[0016] In the figure: 1-base, 2-wear-resistant plate, 3-expansion block diameter, 4-expansion core, 5-wear-resistant plate fixing nut, 6-connector, 7-injection rod, 8-tension spring fixing pin, 9-tension spring, 10-tension spring limit pin. DETAILED DESCRIPTION

[0017] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0018] See also Figures 1 to 3 The utility model provides an automatic compensation, tolerance-free vacuum automatic filling, expansion shot head, comprising a base 1, a wear-resistant sheet 2, an expansion block diameter 3, an expansion core 4, a wear-resistant sheet fixing nut 5, a connecting head 6, a shot rod 7 and a pull rod; the expansion core 4 is arranged on one side of the base 1, the expansion block diameter 3 is arranged on the outside of the expansion core 4, the wear-resistant sheet 2 is arranged on the side of the expansion block diameter 3 away from the expansion core 4, the wear-resistant sheet fixing nut 5 is arranged on the side of the wear-resistant sheet 2 away from the base 1, the connecting head 6 is threadedly connected to the wear-resistant sheet fixing nut 5, and is located on the side of the wear-resistant sheet fixing nut 5 away from the wear-resistant sheet 2, the shot rod 7 is threadedly connected to the connecting head 6, and is located on the side of the connecting head 6 away from the wear-resistant sheet fixing nut 5, the pull rod is fixedly connected to the expansion core 4 and passes through the connecting head 6.

[0019] In this embodiment, the base 1 provides installation conditions for the wear-resistant plate 2, the expansion block diameter 3 and the expansion core 4. The wear-resistant plate fixing nut 5 is used to fix the wear-resistant plate 2, the expansion block diameter 3 and the expansion core 4 on the base 1. The connecting head 6 is used to connect the wear-resistant plate fixing nut 5 and the injection rod 7. The injection rod 7 is used to support and propel the tolerance-free expansion injection head. After the wear-resistant plate 2 is worn out during use of this modified injection head, the pull rod in the connecting head 6 automatically pulls the expansion core 4, causing the expansion core 4 to move and lift the expansion block diameter 3. The expansion block diameter 3 lifts the worn wear-resistant plate 2, and then lifts the wear-resistant plate 2 to make up for the wear. This modified injection head can automatically replenish according to the wear amount of the wear-resistant plate 2, and can lift the wear-resistant plate 2 to be completely used up without frequent replacement, which greatly saves the cost of injection and solves the problem that the existing injection head needs to frequently replace the wear-resistant plate, which is costly.

[0020] Furthermore, the pull rod includes a tension spring fixing pin 8, a tension spring 9 and a tension spring limiting pin 10. The tension spring fixing pin 8 is fixedly connected to the expansion core 4 and is located on the side of the expansion core 4 away from the base 1. The tension spring 9 is fixedly connected to the tension spring fixing pin 8 and is located on the side of the tension spring fixing pin 8 away from the expansion core 4. The tension spring limiting pin 10 is fixedly connected to the tension spring 9 and passes through the connecting head 6.

[0021] In this embodiment, the tension spring limit pin 10 is used to fix the tension spring 9 on the connecting head 6, and the tension spring fixing pin 8 connects the tension spring 9 to the expansion core 4. The tension spring 9 is in a contracted state in real time. When the wear-resistant plate 2 is worn, the expansion core 4 with a slope will move to the side away from the base 1 under the action of the tension spring 9, thereby lifting the expansion block diameter 3 and the wear-resistant plate 2, thereby completing the automatic compensation of the wear-resistant plate 2.

[0022] Furthermore, the wear-resistant sheets 2 have 8 pieces, the expansion block diameters 3 have 4 pieces, and the expansion cores 4 have 8 pieces.

[0023] The above disclosure is only an automatic The foregoing is only a preferred embodiment of the tolerance-free deformation injection head and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of this application still fall within the scope covered by this application.

Claims

1. Automatic compensation and tolerance-free vacuum automatic filling expansion shot head, characterized by: It includes a base, a wear-resistant sheet, an expansion block, an expansion core, a wear-resistant sheet fixing nut, a connector, a shot rod and a pull rod; The expansion core is arranged on one side of the base, the expansion block diameter is arranged on the outside of the expansion core, the wear-resistant sheet is arranged on the side of the expansion block diameter away from the expansion core, the wear-resistant sheet fixing nut is arranged on the side of the wear-resistant sheet away from the base, the connecting head is threadedly connected to the wear-resistant sheet fixing nut, and is located on the side of the wear-resistant sheet fixing nut away from the wear-resistant sheet, the injection rod is threadedly connected to the connecting head, and is located on the side of the connecting head away from the wear-resistant sheet fixing nut, the pull rod is fixedly connected to the expansion core and passes through the connecting head.

2. The automatic compensation zero tolerance vacuum automatic filling expansion shot head according to claim 1, characterized in that: The pull rod includes a tension spring fixing pin, a tension spring and a tension spring limiting pin. The tension spring fixing pin is fixedly connected to the expansion core and is located on the side of the expansion core away from the base. The tension spring is fixedly connected to the tension spring fixing pin and is located on the side of the tension spring fixing pin away from the expansion core. The tension spring limiting pin is fixedly connected to the tension spring and passes through the connecting head.

3. The automatic compensation zero tolerance vacuum automatic filling expansion shot head according to claim 1, characterized in that: There are 8 wear-resistant sheets.

4. The automatic compensation zero tolerance vacuum automatic filling expansion shot head according to claim 3, characterized in that: The expansion block diameter has 4 pieces.

5. The automatic compensation zero tolerance vacuum automatic filling expansion shot head according to claim 4, characterized in that: The expansion block diameter has 8 pieces.

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