Upper positioning mechanism of injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an upper positioning mechanism of an injection mold, which comprises limit rods, the limit rods are vertically and fixedly mounted on the upper surface of a lower mold plate close to four vertex angles, and buffer springs are sleeved outside rod bodies of the limit rods; the top end of the limiting rod is a hemisphere, and a square groove penetrating through the limiting rod is formed in the position, close to the top end, of a rod body of the limiting rod. An upper die plate is connected to the lower die plate, a locking device is fixedly installed on the upper die plate, and the locking device is located between the two limiting rods on the same side. The semispherical body design at the top end of the limiting rod is matched with the big-end-down trumpet-shaped design of the guide hole, so that the primary positioning of the upper template and the lower template is realized; through the locking device, stable positioning die assembly of the upper die plate and the lower die plate is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a positioning mechanism on an injection mold. Background Art

[0002] The injection mold needs to be installed during the injection molding process, including positioning and installing the upper mold plate and the lower mold plate. The existing injection mold uses a limit rod to align and position the upper mold plate and the lower mold plate, but it still requires manual and accurate insertion of the limit rod into the limit groove, and this alignment process takes a lot of time. Utility Model Content

[0003] The purpose of the present application is to provide a positioning mechanism on an injection mold, aiming to solve the above-mentioned problems in the prior art.

[0004] The present application provides a positioning mechanism on an injection mold, including a limit rod, which is vertically fixedly installed on the upper surface of a lower template near four top corners, and a buffer spring is sleeved on the outside of the limit rod body; the top of the limit rod is a hemisphere, and a square groove penetrating the limit rod is provided near the top of the limit rod body; the lower template is connected to an upper template, and a locking device is fixedly installed on the upper template, and the locking device is located between two limit rods on the same side.

[0005] Furthermore, four guide holes are opened on the upper template, and the positions of the four guide holes correspond to the positions of the limit rods one by one. The upper template is slidably connected to the lower template through the cooperation between the guide holes and the limit rods.

[0006] Furthermore, the guide hole passes through the upper and lower surfaces of the upper template, the upper part of the guide hole is cylindrical, the diameter of the cylindrical part is the same as the diameter of the limiting rod body, and the lower part of the guide hole is trumpet-shaped with a small upper part and a large lower part.

[0007] Furthermore, the locking device includes a slide groove extending in the left and right directions, windows are provided at the left and right ends of the slide groove, two bayonet slots are provided on the front side of the slide groove, a slider is slidably connected inside the slide groove, and the size of the window cross-section and the size of the slider cross-section match the size of the square groove cross-section.

[0008] Furthermore, a partition is fixedly connected in the middle of the slide groove, and a slide rod is fixedly connected to each of the left and right sides of the partition.

[0009] Furthermore, a pull plate is fixedly connected to the sliding block, a clamping block is rotatably connected to the pull plate, and the clamping block is clamped with the bayonet.

[0010] Furthermore, an inner groove is provided at the tail of the sliding block, and the diameter of the inner groove matches the diameter of the sliding rod.

[0011] Furthermore, a return spring is connected in the inner groove, and one end of the return spring is fixedly connected to the end of the inner groove.

[0012] The beneficial effects of the utility model are as follows: the utility model realizes the preliminary positioning of the upper and lower templates through the hemispherical design of the top of the limiting rod and the trumpet-shaped design of the guide hole that is small at the top and large at the bottom; and realizes the stable positioning and clamping of the upper and lower templates through the locking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 A schematic diagram of the guide hole cross section.

[0015] Figure 3 This is a schematic diagram of the template structure.

[0016] Figure 4 This is an enlarged view of part A.

[0017] Figure 5 It is a cross-sectional schematic diagram of the locking device.

[0018] In the figure:

[0019] 1-limit rod; 2-lower template; 3-buffer spring; 4-square groove; 5-upper template; 6-locking device; 7-guide hole; 8-slide groove; 9-window; 10-bayonet; 11-slider; 12-partition; 13-slide rod; 14-pull plate; 15-block; 16-inner groove; 17-reset spring. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-5 The shown positioning mechanism on an injection mold includes a limit rod 1, which is vertically fixed on the upper surface of a lower template 2 near the four top corners, and a buffer spring 3 is sleeved on the outside of the limit rod 1; the top of the limit rod 1 is a hemispherical body, and a square groove 4 that penetrates the limit rod 1 is provided near the top of the limit rod 1; an upper template 5 is connected to the lower template 2, and a locking device 6 is fixedly installed on the upper template 5, and the locking device 6 is located between the two limit rods 1 on the same side.

[0022] The upper template 5 is provided with four guide holes 7 , and the positions of the four guide holes 7 correspond to the positions of the limit rods 1 one by one. The upper template 5 is slidably connected to the lower template 2 through the cooperation between the guide holes 7 and the limit rods 1 .

[0023] The guide hole 7 passes through the upper and lower surfaces of the upper template 5. The upper part of the guide hole 7 is cylindrical, and the diameter of the cylindrical part is the same as the diameter of the rod body of the limiting rod 1. The lower part of the guide hole 7 is trumpet-shaped with a small top and a large bottom. The hemispherical design at the top of the limiting rod 1 is combined with the trumpet-shaped design of the guide hole 7 with a small top and a large bottom, which facilitates the mold closing and positioning of the upper template 5 and the lower template 2. The cylindrical part of the guide hole 7 plays a limiting role for the buffer spring 3. When the mold is closed, the buffer spring 3 is compressed to the trumpet-shaped part of the guide hole 7. The elastic force of the compression process of the buffer spring 3 prevents the upper template 5 from colliding with the lower template 2.

[0024] The locking device 6 includes a slide groove 8 extending in the left-right direction, with windows 9 provided at the left and right ends of the slide groove 8, two bayonet holes 10 provided on the front side of the slide groove 8, and a slider 11 slidably connected inside the slide groove 8, and the size of the cross section of the window 9 and the size of the cross section of the slider 11 match the size of the cross section of the square groove 4.

[0025] A partition plate 12 is fixedly connected in the middle of the slide groove 8 , and a slide rod 13 is fixedly connected to the left and right sides of the partition plate 12 .

[0026] A pull plate 14 is fixedly connected to the slider 11 , a clamping block 15 is rotatably connected to the pull plate 14 , and the clamping block 15 is clamped with the clamping port 10 .

[0027] The slider 11 has an inner groove 16 at its rear end, and the diameter of the inner groove 16 matches the diameter of the slider 13 .

[0028] A return spring 17 is connected inside the inner groove 16 , and one end of the return spring 17 is fixedly connected to the end of the inner groove 16 .

[0029] When opening the mold, move the pull plate 14 to make the tail of the slider 11 fit against the partition 12. At this time, the block 15 is located above the slot 10, and the block 15 is inserted into the slot 10 to lock it in place. When closing the mold, move the block 15 out of the slot 10, press the upper template 5 from above, so that the upper template 5 and the lower template 2 are completely fitted together. At this time, the slider 11 is aligned with the square groove 4, and the return spring 17 is squeezed by the slide rod 13 to push the slider 11 into the square groove 4, so as to achieve stable positioning and closing of the upper template 5 and the lower template 2.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A positioning mechanism on an injection mold, characterized in that: It includes a limit rod, which is vertically fixed on the upper surface of the lower template near the four top corners, and a buffer spring is sleeved on the outside of the limit rod body; the top of the limit rod is a hemisphere, and a square groove penetrating the limit rod is provided near the top of the limit rod body; the lower template is connected to the upper template, and a locking device is fixedly installed on the upper template, and the locking device is located between the two limit rods on the same side.

2. The positioning mechanism on an injection mold according to claim 1, characterized in that: The upper template is provided with four guide holes, the positions of the four guide holes correspond to the positions of the limit rods one by one, and the upper template is slidably connected with the lower template through the cooperation of the guide holes and the limit rods.

3. The positioning mechanism on an injection mold according to claim 2, characterized in that: The guide hole passes through the upper and lower surfaces of the upper template, the upper part of the guide hole is cylindrical, the diameter of the cylindrical part is the same as the diameter of the limiting rod body, and the lower part of the guide hole is trumpet-shaped with a small upper part and a large lower part.

4. The positioning mechanism on an injection mold according to claim 1, characterized in that: The locking device includes a slide groove extending in the left-right direction, with windows at the left and right ends of the slide groove, two bayonet holes at the front side of the slide groove, and a slider slidably connected inside the slide groove. The size of the window cross-section and the size of the slider cross-section match the size of the square groove cross-section.

5. The positioning mechanism on an injection mold according to claim 4, characterized in that: A partition is fixedly connected in the middle of the slide groove, and a slide rod is fixedly connected on the left and right sides of the partition.

6. The positioning mechanism on an injection mold according to claim 4, characterized in that: The sliding block is fixedly connected with a pull plate, the pull plate is rotatably connected with a clamping block, and the clamping block is clamped with the bayonet.

7. The positioning mechanism on an injection mold according to claim 4, characterized in that: The tail of the sliding block is provided with an inner groove, and the diameter of the inner groove matches the diameter of the sliding rod.

8. The positioning mechanism on an injection mold according to claim 7, characterized in that: A return spring is connected inside the inner groove, and one end of the return spring is fixedly connected to the end of the inner groove.

Images