A positioning mold for a vacuum box that is convenient for limiting the position of a workpiece

Abstract

The present invention relates to the technical field of vacuum boxes, and discloses a positioning mold for a vacuum box that is convenient for limiting the position of a workpiece, comprising a vacuum box body, the inner cavity of the vacuum box body is movably connected with a partition, the outer surface of the partition is fixedly installed with a lower positioning mold, the top of the lower positioning mold is provided with a positioning foot, the top of the positioning foot is fixedly installed with an upper positioning mold, the interior of the upper positioning mold is provided with a transmission component, the outer surface of the transmission component is provided with a sliding positioning mechanism, the transmission component and the sliding positioning mechanism are used to limit and fix the workpiece, and prevent the workpiece from shaking and colliding to cause damage, the partition comprises a vertical plate, the vertical plate is movably connected to the inner cavity of the vacuum box body, the outer surface of the vertical plate is fixedly installed with a horizontal plate, and the horizontal plate is movably connected to the inner cavity of the vacuum box body. The present invention can not only limit and fix the workpiece, but also prevent the workpiece from being damaged due to shaking and collision.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum boxes, in particular to a positioning die for a vacuum box which is convenient for limiting the position of a workpiece. Background Art

[0002] The vacuum box is used for degassing powders, colloids and other objects with high gas content. It has the characteristics of fast degassing rate and high degree of automation. The equipment consists of a belt conveyor, a vacuum cover, a vacuum pump, a pneumatic lifting system, an automatic detection and control system, etc. Before degassing in the vacuum box, a positioning mold is required to limit the workpiece.

[0003] At present, when the positioning mold for the vacuum box is used to limit the workpiece, it is impossible to limit and fix the workpiece. When the workpiece shakes in the inner cavity of the vacuum box due to external force and collides with the vacuum box, the precision workpiece is damaged, thereby increasing the defective rate of the workpiece. Therefore, we propose a positioning mold for the vacuum box that is convenient for limiting the workpiece. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a positioning mold for a vacuum box that is convenient for limiting the position of the workpiece. It has the advantages of not only being able to limit and fix the workpiece, but also being able to prevent the workpiece from being damaged due to shaking and collision, thus solving the problem of being unable to limit and fix the workpiece.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of not only limiting and fixing the workpiece but also preventing the workpiece from being damaged due to shaking and collision, the present invention provides the following technical solutions: a positioning mold for a vacuum box that is convenient for limiting the workpiece, comprising a vacuum box body, the inner cavity of the vacuum box body is movably connected with a partition, the outer surface of the partition is fixedly mounted with a lower positioning mold, and the top of the lower positioning mold is provided with a positioning foot inside;

[0008] An upper positioning mold is fixedly installed on the top of the positioning leg, a transmission component is arranged inside the upper positioning mold, and a sliding positioning mechanism is arranged on the outer surface of the transmission component. The transmission component and the sliding positioning mechanism cooperate to limit and fix the workpiece and prevent the workpiece from shaking and colliding and causing damage.

[0009] As a preferred technical solution of the present invention, the partition includes a vertical plate, which is movably connected to the inner cavity of the vacuum box body, and a horizontal plate is fixedly installed on the outer surface of the vertical plate, which is movably connected to the inner cavity of the vacuum box body, and the horizontal plate and the vertical plate are connected in a cross shape, and the outer surfaces of the vertical plate and the horizontal plate are fixedly connected to the lower positioning mold.

[0010] As a preferred technical solution of the present invention, a positioning hole is opened inside the top end of the lower positioning mold, and the inner cavity of the positioning hole is movably connected to the positioning support foot.

[0011] As a preferred technical solution of the present invention, a movable groove is provided inside the top of the upper positioning mold, and a mounting groove is provided on the bottom wall of the inner cavity of the movable groove. The inner cavity of the movable groove and the mounting groove are movably connected with the transmission assembly.

[0012] As a preferred technical solution of the present invention, a slide groove is provided inside the top end of the upper positioning mold, the inner cavity of the slide groove is communicated with the inner cavity of the installation groove, and the inner cavity of the slide groove is movably connected to the sliding positioning mechanism.

[0013] As a preferred technical solution of the present invention, the transmission assembly includes a first spring, one end of the first spring is fixedly connected to the bottom wall of the mounting groove, the first spring is movably connected to the inner cavity of the mounting groove, a moving block is fixedly installed on the end of the first spring away from the bottom wall of the mounting groove, the outer surface of the moving block is movably connected to the inner cavity of the movable groove, a cylinder is fixedly installed on the top of the moving block, and the outer surface of the moving block is movably connected to the sliding positioning mechanism.

[0014] As a preferred technical solution of the present invention, the sliding positioning mechanism includes a sliding component and a clamping positioning component, the sliding component and the transmission component are movably connected, the sliding component and the slide groove are movably connected, and the sliding component and the clamping positioning component are fixedly connected.

[0015] As a preferred technical solution of the present invention, the sliding assembly includes a slider, the outer surface of the slider is movably connected to the transmission assembly, the outer surface of the slider is movably connected to the slide groove, a second spring is fixedly installed on one side of the slider, an end of the second spring away from the slider is fixedly connected to the inner cavity side wall of the slide groove, and the second spring is in a compressed state, a mounting block is fixedly installed on the top of the slider, and the outer surface of the mounting block is fixedly connected to the clamping and positioning assembly.

[0016] As a preferred technical solution of the present invention, the slider includes a rectangular block, the outer surface of the rectangular block is movably connected to the inner cavity of the slide groove, one end of the rectangular block is fixedly connected to the second spring, a protrusion is fixedly installed on the side of the rectangular block away from the second spring, and the side of the protrusion away from the rectangular block is movably connected to the transmission assembly.

[0017] As a preferred technical solution of the present invention, the clamping and positioning assembly includes a telescopic rod, one end of the telescopic rod is fixedly connected to the outer surface of the mounting block in the sliding assembly, a third spring is sleeved on the outer wall of the telescopic rod, a clamping plate is fixedly installed on one end of the telescopic rod away from the mounting block in the sliding assembly, two ends of the third spring are respectively fixed to the outer surfaces of the clamping plate and the mounting block in the sliding assembly, a rubber block is fixedly installed on the side of the clamping plate away from the telescopic rod, and the rubber blocks are arranged in a linear array.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a positioning mold for a vacuum box that is convenient for limiting the position of a workpiece, and has the following beneficial effects:

[0020] 1. The positioning mold for the vacuum box which is convenient for limiting the position of the workpiece, by placing the workpiece on the cylinder, the gravity of the workpiece drives the moving block to move in the inner cavity of the movable groove, and squeezes the first spring, the first spring undergoes elastic deformation and moves in the inner cavity of the installation groove, at the same time, the convex block moves on the outer surface of the moving block, and always keeps moving on the outer surface of the moving block, at this time, the rectangular block drives the rectangular block to move in the inner cavity of the slide groove under the action of the second spring in a compressed state, and moves in the direction of the moving block, the installation block drives the telescopic rod to move in the direction of the workpiece, at this time the telescopic rod drives the clamping plate and the rubber block to move toward the workpiece, until the clamping plate and the rubber block fix and limit the workpiece, and the rubber block and the clamping plate are squeezed and move toward the installation block, the telescopic rod is shortened, and the third spring undergoes elastic deformation, so as to facilitate the limiting and fixing of the workpiece, thereby preventing the workpiece from shaking and colliding and causing damage.

[0021] 2. The vacuum box positioning mold for limiting the position of the workpiece is convenient for placing the partition composed of vertical plates and horizontal plates and the lower positioning mold on the bottom wall of the inner cavity of the vacuum box body, and then the positioning feet are placed in the inner cavity of the positioning hole, and then the workpieces are classified and placed on the upper positioning mold, so as to facilitate the classification and placement of the workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a main perspective view of the present invention;

[0023] Figure 2 It is a half-cut stereogram of the present invention;

[0024] Figure 3 This is a three-dimensional diagram of the top connection of the lower positioning mold of the present invention;

[0025] Figure 4 This is a half-section stereoscopic view of the top connection of the lower positioning mold of the present invention;

[0026] Figure 5 The structure of the present invention Figure 5 Enlarged view of point A in the middle;

[0027] Figure 6 The present invention removes the three-dimensional diagram of the sliding positioning mechanism;

[0028] Figure 7 It is a three-dimensional diagram of the sliding positioning mechanism of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle.

[0030] In the figure: 1. vacuum box body; 2. partition; 201. vertical plate; 202. horizontal plate; 3. lower positioning mold; 301. positioning hole; 4. upper positioning mold; 401. movable groove; 402. mounting groove; 403. slide groove; 5. positioning support foot; 6. transmission assembly; 601. first spring; 602. moving block; 603. cylinder; 7. sliding positioning mechanism; 701. slider; 7011. rectangular block; 7012. protrusion; 702. second spring; 703. mounting block; 704. telescopic rod; 705. third spring; 706. clamping plate; 707. rubber block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] See also Figure 1-8 A positioning mold for a vacuum box that is convenient for limiting the position of a workpiece, comprising a vacuum box body 1, an inner cavity of the vacuum box body 1 is movably connected with a partition 2, a lower positioning mold 3 is fixedly installed on the outer surface of the partition 2, and a positioning foot 5 is arranged inside the top of the lower positioning mold 3;

[0034] An upper positioning mold 4 is fixedly installed on the top of the positioning support foot 5, a transmission component 6 is arranged inside the upper positioning mold 4, and a sliding positioning mechanism 7 is arranged on the outer surface of the transmission component 6. The transmission component 6 and the sliding positioning mechanism 7 cooperate to limit and fix the workpiece and prevent the workpiece from shaking and colliding and causing damage.

[0035] Specifically, the partition 2 includes a vertical plate 201, which is movably connected to the inner cavity of the vacuum box body 1, and a horizontal plate 202 is fixedly installed on the outer surface of the vertical plate 201. The horizontal plate 202 is movably connected to the inner cavity of the vacuum box body 1, and the horizontal plate 202 is connected to the vertical plate 201 in a cross shape, and the outer surfaces of the vertical plate 201 and the horizontal plate 202 are fixedly connected to the lower positioning mold 3.

[0036] In this embodiment, the partition 2 is composed of a vertical plate 201 and a horizontal plate 202, and the vertical plate 201 and the horizontal plate 202 are fixedly connected and are in a cross shape, so as to facilitate the classification and placement of the workpieces.

[0037] Specifically, a positioning hole 301 is opened inside the top end of the lower positioning mold 3 , and the inner cavity of the positioning hole 301 is movably connected to the positioning support leg 5 .

[0038] In this embodiment, a positioning hole 301 is opened inside the top of the lower positioning mold 3 to facilitate the positioning of the positioning foot 5 in the inner cavity of the positioning hole 301, thereby facilitating the positioning of the upper positioning mold 4.

[0039] Specifically, a movable groove 401 is opened inside the top of the upper positioning mold 4, and a mounting groove 402 is opened on the bottom wall of the inner cavity of the movable groove 401. The inner cavities of the movable groove 401 and the mounting groove 402 are movably connected to the transmission assembly 6.

[0040] In this embodiment, a movable groove 401 is opened inside the top of the upper positioning mold 4, and an installation groove 402 is opened on the bottom wall of the inner cavity of the movable groove 401, so as to facilitate the fixing of the transmission component 6 on the bottom wall of the installation groove 402 and facilitate the operation of the transmission component 6 in the inner cavity of the movable groove 401 and the installation groove 402.

[0041] Specifically, a slide groove 403 is provided inside the top end of the upper positioning mold 4 , the inner cavity of the slide groove 403 is communicated with the inner cavity of the installation groove 402 , and the inner cavity of the slide groove 403 is movably connected with the sliding positioning mechanism 7 .

[0042] In this embodiment, a slide groove 403 is opened inside the top of the upper positioning mold 4, and the inner cavity of the slide groove 403 is connected with the inner cavity of the installation groove 402, so as to facilitate the movement of the sliding positioning mechanism 7 in the inner cavity of the slide groove 403, and then facilitate the transmission component 6 to drive the sliding positioning mechanism 7 to move.

[0043] Specifically, the transmission assembly 6 includes a first spring 601, one end of the first spring 601 is fixedly connected to the bottom wall of the mounting groove 402, the first spring 601 is movably connected to the inner cavity of the mounting groove 402, a moving block 602 is fixedly installed on one end of the first spring 601 away from the bottom wall of the mounting groove 402, the outer surface of the moving block 602 is movably connected to the inner cavity of the movable groove 401, a cylinder 603 is fixedly installed on the top of the moving block 602, and the outer surface of the moving block 602 is movably connected to the sliding positioning mechanism 7.

[0044] In this embodiment, the workpiece is placed on the cylinder 603 at the top of the moving block 602. At this time, the gravity of the workpiece drives the moving block 602 to move in the inner cavity of the movable groove 401 opened inside the top of the upper positioning mold 4, and squeezes the first spring 601 fixed on the bottom wall of the installation groove 402. The first spring 601 undergoes elastic deformation and moves in the inner cavity of the installation groove 402 opened on the bottom wall of the inner cavity of the movable groove 401. The moving block 602 drives the sliding positioning mechanism 7 to move toward the direction of the workpiece placed on the cylinder 603, thereby facilitating the movement of the sliding positioning mechanism 7, and then facilitating the limiting fixation of the workpiece.

[0045] Specifically, the sliding positioning mechanism 7 includes a sliding component and a clamping positioning component. The sliding component is movably connected to the transmission component 6, the sliding component is movably connected to the slide groove 403, and the sliding component is fixedly connected to the clamping positioning component.

[0046] In this embodiment, the sliding positioning mechanism 7 is composed of a sliding component and a clamping positioning component, wherein the sliding component is movably connected to the transmission component 6, thereby facilitating the transmission component 6 to drive the sliding component to move; and the sliding component is movably connected to the slide groove 403, thereby facilitating the sliding component to move in the inner cavity of the slide groove 403 and drive the clamping positioning component to move.

[0047] Specifically, the sliding assembly includes a slider 701, the outer surface of the slider 701 is movably connected to the transmission assembly 6, the outer surface of the slider 701 is movably connected to the slide groove 403, a second spring 702 is fixedly installed on one side of the slider 701, an end of the second spring 702 away from the slider 701 is fixedly connected to the inner cavity side wall of the slide groove 403, and the second spring 702 is in a compressed state, a mounting block 703 is fixedly installed on the top of the slider 701, and the outer surface of the mounting block 703 is fixedly connected to the clamping and positioning assembly.

[0048] In this embodiment, when the moving block 602 in the transmission assembly 6 moves downward due to the gravity of the workpiece, the slider 701 movably connected to the moving block 602 drives the slider 701 to move in the inner cavity of the slide groove 403 opened inside the top of the upper positioning mold 4 when the second spring 702 is in a compressed state, and moves toward the moving block 602, thereby driving the installation block 703 fixed on the top of the slider 701 to move, and then conveniently driving the clamping and positioning assembly installed on the installation block 703 to move toward the workpiece.

[0049] Specifically, the slider 701 includes a rectangular block 7011, the outer surface of the rectangular block 7011 is movably connected to the inner cavity of the slide groove 403, one end of the rectangular block 7011 is fixedly connected to the second spring 702, a protrusion 7012 is fixedly installed on the side of the rectangular block 7011 away from the second spring 702, and the side of the protrusion 7012 away from the rectangular block 7011 is movably connected to the transmission assembly 6.

[0050] In this embodiment, the slider 701 is composed of a rectangular block 7011 and a protrusion 7012, wherein the rectangular block 7011 is fixedly connected to the second spring 702 in a compressed state, and the second spring 702 in the compressed state drives the rectangular block 7011 to move in the inner cavity of the slide groove 403 opened inside the top of the upper positioning mold 4, and moves toward the moving block 602, and the protrusion 7012 fixed on the side of the rectangular block 7011 away from the second spring 702 moves on the outer surface of the moving block 602 in the transmission assembly 6, and always keeps moving on the outer surface of the moving block 602, thereby facilitating the moving block 602 in the transmission assembly 6 to drive the slider 701 to move in the inner cavity of the slide groove 403 opened inside the top of the upper positioning mold 4.

[0051] Specifically, the clamping and positioning assembly includes a telescopic rod 704, one end of the telescopic rod 704 is fixedly connected to the outer surface of the mounting block 703 in the sliding assembly, the outer wall of the telescopic rod 704 is sleeved with a third spring 705, and a clamping plate 706 is fixedly installed at one end of the telescopic rod 704 away from the mounting block 703 in the sliding assembly, and both ends of the third spring 705 are respectively fixed to the clamping plate 706 and the outer surface of the mounting block 703 in the sliding assembly, and a rubber block 707 is fixedly installed on the side of the clamping plate 706 away from the telescopic rod 704, and the rubber blocks 707 are arranged in a linear array.

[0052] In this embodiment, the sliding assembly moving toward the workpiece drives the telescopic rod 704 in the clamping and positioning assembly to move toward the workpiece. At this time, the telescopic rod 704 drives the clamping plate 706 fixed at one end of the telescopic rod 704 and the rubber block 707 fixed on the clamping plate 706 to move toward the workpiece until the clamping plate 706 and the rubber block 707 fixed on the clamping plate 706 fix the workpiece, and the rubber block 707 fixed on the clamping plate 706 and the clamping plate 706 are squeezed and move toward the mounting block 703, the telescopic rod 704 fixed on the outer surface of the mounting block 703 is shortened, and the third spring 705 sleeved on the outer wall of the telescopic rod 704 is elastically deformed, thereby facilitating the limiting and fixing of the workpiece, thereby preventing the workpiece from shaking and colliding and causing damage.

[0053] Working principle: When in use, the partition 2 composed of the vertical plate 201 and the horizontal plate 202 and the lower positioning mold 3 fixed on the outer surface of the vertical plate 201 and the horizontal plate 202 are placed on the bottom wall of the inner cavity of the vacuum box body 1, and then the positioning foot 5 fixed at the bottom end of the upper positioning mold 4 is placed in the inner cavity of the positioning hole 301 opened inside the top of the lower positioning mold 3, and then the workpieces are classified and placed on the cylinder 603 at the top of the moving block 602. At this time, due to the gravity of the workpiece itself, the moving block 602 is driven to move in the inner cavity of the movable groove 401 opened inside the top of the upper positioning mold 4, and the first spring 601 fixed on the bottom wall of the mounting groove 402 is squeezed. The first spring 601 undergoes elastic deformation and moves in the inner cavity of the mounting groove 402 opened on the bottom wall of the inner cavity of the movable groove 401. At the same time, the protrusion 7012 movably connected to the moving block 602 moves on the outer surface of the moving block 602 and always keeps moving on the outer surface of the moving block 602. At this time, the second spring 702 of the rectangular block 7011 in the compressed state Under the action, the rectangular block 7011 is driven to move in the inner cavity of the slide groove 403 opened inside the top of the upper positioning mold 4, and moves toward the moving block 602. The mounting block 703 fixed on the top of the moving block 602 drives the telescopic rod 704 to move toward the workpiece. At this time, the telescopic rod 704 drives the clamping plate 706 fixed at one end of the telescopic rod 704 and the rubber block 707 fixed on the clamping plate 706 to move toward the workpiece until the clamping plate 706 and the rubber block 707 fixed on the clamping plate 706 are fixed to the limit. The workpiece is positioned, and the rubber block 707 and the clamping plate 706 fixed on the clamping plate 706 are squeezed and move toward the mounting block 703, the telescopic rod 704 fixed on the outer surface of the mounting block 703 is shortened, and the third spring 705 sleeved on the outer wall of the telescopic rod 704 is elastically deformed, thereby facilitating the limiting and fixing of the workpiece, thereby preventing the workpiece from shaking or colliding and causing damage. The device can not only limit and fix the workpiece, but also prevent the workpiece from being damaged due to shaking or colliding.

[0054] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations 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 includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0055] 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 positioning mold for a vacuum box for conveniently limiting the position of a workpiece, comprising a vacuum box body (1), characterized in that: The inner cavity of the vacuum box body (1) is movably connected to a partition (2), a lower positioning mold (3) is fixedly installed on the outer surface of the partition (2), and a positioning foot (5) is provided inside the top end of the lower positioning mold (3); An upper positioning die (4) is fixedly mounted on the top of the positioning leg (5), a transmission assembly (6) is arranged inside the upper positioning die (4), a sliding positioning mechanism (7) is arranged on the outer surface of the transmission assembly (6), and the transmission assembly (6) and the sliding positioning mechanism (7) cooperate to limit and fix the workpiece and prevent the workpiece from shaking or colliding and causing damage; A movable groove (401) is provided inside the top of the upper positioning mold (4), a mounting groove (402) is provided on the bottom wall of the inner cavity of the movable groove (401), and the inner cavities of the movable groove (401) and the mounting groove (402) are movably connected to the transmission assembly (6); A slide groove (403) is provided inside the top end of the upper positioning mold (4), the inner cavity of the slide groove (403) is communicated with the inner cavity of the installation groove (402), and the inner cavity of the slide groove (403) is movably connected to the sliding positioning mechanism (7); The transmission assembly (6) comprises a first spring (601), one end of the first spring (601) is fixedly connected to the bottom wall of the mounting groove (402), the first spring (601) is movably connected to the inner cavity of the mounting groove (402), a moving block (602) is fixedly installed on one end of the first spring (601) away from the bottom wall of the mounting groove (402), the outer surface of the moving block (602) is movably connected to the inner cavity of the movable groove (401), a cylinder (603) is fixedly installed on the top of the moving block (602), and the outer surface of the moving block (602) is movably connected to the sliding positioning mechanism (7); The sliding positioning mechanism (7) comprises a sliding component and a clamping positioning component, the sliding component is movably connected to the transmission component (6), the sliding component is movably connected to the slide groove (403), and the sliding component is fixedly connected to the clamping positioning component; The sliding assembly includes a slider (701), the outer surface of the slider (701) is movably connected to the transmission assembly (6), the outer surface of the slider (701) is movably connected to the slide groove (403), a second spring (702) is fixedly installed on one side of the slider (701), an end of the second spring (702) away from the slider (701) is fixedly connected to the inner cavity side wall of the slide groove (403), and the second spring (702) is in a compressed state, a mounting block (703) is fixedly installed on the top of the slider (701), and the outer surface of the mounting block (703) is fixedly connected to the clamping and positioning assembly.

2. A positioning mold for a vacuum box that is convenient for limiting the position of a workpiece according to claim 1, characterized in that: The partition (2) comprises a vertical plate (201), the vertical plate (201) being movably connected to the inner cavity of the vacuum box body (1), a horizontal plate (202) being fixedly mounted on the outer surface of the vertical plate (201), the horizontal plate (202) being movably connected to the inner cavity of the vacuum box body (1), and the horizontal plate (202) and the vertical plate (201) being connected in a cross shape, and the outer surfaces of the vertical plate (201) and the horizontal plate (202) are both fixedly connected to the lower positioning mold (3).

3. A positioning mold for a vacuum box that is convenient for limiting the position of a workpiece according to claim 2, characterized in that: A positioning hole (301) is provided inside the top end of the lower positioning mold (3), and the inner cavity of the positioning hole (301) is movably connected to the positioning support foot (5).

4. The positioning mold for a vacuum box that is convenient for limiting the position of a workpiece according to claim 1 is characterized in that: The slider (701) comprises a rectangular block (7011), the outer surface of the rectangular block (7011) is movably connected to the inner cavity of the slide groove (403), one end of the rectangular block (7011) is fixedly connected to the second spring (702), a protrusion (7012) is fixedly installed on the side of the rectangular block (7011) away from the second spring (702), and the side of the protrusion (7012) away from the rectangular block (7011) is movably connected to the transmission assembly (6).

5. The positioning mold for a vacuum box that is convenient for limiting the position of a workpiece according to claim 1 is characterized in that: The clamping and positioning assembly comprises a telescopic rod (704), one end of the telescopic rod (704) is fixedly connected to the outer surface of a mounting block (703) in the sliding assembly, a third spring (705) is sleeved on the outer wall of the telescopic rod (704), a clamping plate (706) is fixedly installed on one end of the telescopic rod (704) away from the mounting block (703) in the sliding assembly, two ends of the third spring (705) are respectively fixed to the clamping plate (706) and the outer surface of the mounting block (703) in the sliding assembly, and a rubber block (707) is fixedly installed on one side of the clamping plate (706) away from the telescopic rod (704), and the rubber blocks (707) are arranged in a linear array.

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